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Article type: Cover
Pages
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Published: October 20, 2000
Released on J-STAGE: June 23, 2017
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Article type: Index
Pages
i-viii
Published: October 20, 2000
Released on J-STAGE: June 23, 2017
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Fu-Jen Ko, Yi-Pai Huang, Han-Ping David Shieh
Article type: Article
Session ID: IDY2000-190
Published: October 20, 2000
Released on J-STAGE: June 23, 2017
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An off-axis asymmetrical microlens array light control film(AMA-LCF) for brightness and contrast enhancement in reflective liquid crystal displays(LCDs)is demonstrated. The AMA-LCF is constructed with an off-axis microlens array and laminated to the top surface of the reflective LCDs. The transparent filmlike device can directs incident light into a reflected cone near normal to the display surface, yielding a gain about 1X to 10X of MgO standard-white at the typical viewing region from 0^ο to 20^ο. Moreover, glare can be greatly reduced. A multi-direction LCF which can direct the incident light from different directions for viewing has been successfully demonstrated for added brightness and contrast.
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Jian-Xin Guo, Hoi-Sing Kwok
Article type: Article
Session ID: IDY2000-191
Published: October 20, 2000
Released on J-STAGE: June 23, 2017
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Conventional bistable twisted nematic liquid crystal displays where the two twist states differ by 360° are not really stable. We report here a study of permanently bistable twisted nematic displays where the two twist states differ by 180°. These twist states have an infinite inferime and are truly bistable. Switching betweed the two bistable twist states is studied as well. A working device is demonstrated.
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Jae-Hong Park, Ju-Hyun Lee, Hak-Rin Kim, Sin-Doo Lee
Article type: Article
Session ID: IDY2000-192
Published: October 20, 2000
Released on J-STAGE: June 23, 2017
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We present a new method of fabricating a vertically aligned liquid crystal display(LCD)using surface relief gratings. A two dimensional surface gratings are produced on a photosensitive polymer by illuminating the UV light through a photomask. A multi-domain structure is obtained on the grating surface with the homeotropic alignment. The LCD configuration with such axially multi-domain structure along the surface relief exhibits excellent viewing characteristics.
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Doo-Hwan You, Ju-Hyun Lee, Tae-Young Yoon, Sin-Doo Lee
Article type: Article
Session ID: IDY2000-193
Published: October 20, 2000
Released on J-STAGE: June 23, 2017
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In this paper, we proposed a vertical configuration of an antiferroelectric liquid crystal(VC-AFLC)mode which has more stable alignment than that of a helix deformed ferroelectric liquid crystal(VC-HDFLC)mode. This VC-AFLC mode has the fast response, analog gray scale capability, high contrast, and wide viewing characteristics.
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Zhiying Shen, Kunihiko Nishimura, Shuhei Nakata, Soichiro Okuda, Takas ...
Article type: Article
Session ID: IDY2000-194
Published: October 20, 2000
Released on J-STAGE: June 23, 2017
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A new high performance deflection yoke for a 19inch 100-degree deflection flat CRT(Color Cathode Ray Tube)display has been developed. The length of this 100-degree cathode ray tube has been 36mm shortened in comparison with the 19inch 90-degree ones. This 100-deflection yoke also has its horizontal deflection sensitivity improved 16% to compare well with the normal wide-angle deflection ones.
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T Tsuchiya, S Kawamoto, H Inoue
Article type: Article
Session ID: IDY2000-195
Published: October 20, 2000
Released on J-STAGE: June 23, 2017
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Zhang Xiong, Tang Yongming, Tu Yan, Yin Hanchun, Tong Linsu
Article type: Article
Session ID: IDY2000-196
Published: October 20, 2000
Released on J-STAGE: June 23, 2017
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A fast FEM method is proposed in this paper, which will be applied in simulation of 3D magnetic deflect field with huge number of elements. The application of indexed store and calculation with the matrix saves limited memory by using dynamic allocate memory(DAM)technology. The equations are solved with over-access iteration method which is much faster than normal LU method in the condition of large number of equations. According this method, a special program is developed, which can calculate 3D magnetic deflect field applied in cathode ray tube and simulate the deflection of electron beam together with convergence, raster and spot shape on the screen. A 15"CDT is selected as an example to be analyzed.
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Chi-Neng Mo, Chi-Tsan Wang, Chun-Hsien Yeh, Wuu-Tzuenn Wu
Article type: Article
Session ID: IDY2000-197
Published: October 20, 2000
Released on J-STAGE: June 23, 2017
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In color CRT electron gun manufacturing, the part tolerance or assembling misalignment will cause astigmatism, halo and other performance problems in the gun. In order to improve the astigmatism of the common lens type of color E-gun, a fast speed automated categorizing machine(ACM)has been developed. This ACM can measure and sort out the depth of the main lens grids very quickly and accurately. By utilizing these sorted groups of parts, a best group pair matching of our G5 and G6 grids can be made based on our computer modeling study and previous test results. The accuracy of the ACM is 3μm and the speed in under 3 seconds per piece. We have used the ACM in production line about 6 months and obtained a good focus astigmatism improvement in the tube production.
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Ching-Hsiang Tseng, Wen-Chi Chen
Article type: Article
Session ID: IDY2000-198
Published: October 20, 2000
Released on J-STAGE: June 23, 2017
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In this paper, a better shock testing method is introduced; this is a test method modified from a standard test method -- Mechanical Shock Fragility of Products ASTM D3332. It meets the requirements for CRT drop test designed for package designer, but using different package materials. In this test, a good fixture design concept is also adopted to increase the measuring accuracy during shock test procedure. It will decrease the phase error and amplify the ratio between fixture and testing machine. This concept can also be adopted to enhance other display shock tests. In this paper, tests was conducted using a 19"cathode ray tube.
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Shuxiu Zhang, Heiju Uchiike
Article type: Article
Session ID: IDY2000-199
Published: October 20, 2000
Released on J-STAGE: June 23, 2017
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Europium-activated batium magnesium aluminate(BaMgAl_<10>O_<17>:Eu^<+2> BAM) is used for color PDPs as a blue phosphor. However, luminance decrease and color shift, which originate in the deterioration of BAM, are the most important problems to be solved. In this research, the tricolor phosphors for PDP were examined when a phosphor film was heat-treated and irradiated by vacuum ultraviolet rays. After defining the deterioration of the BAM, improvement of the deterioration was studied in detail by adopting BAN solid solutions. It is indicated that the deterioration can be improved both on the heat-treating and the vacuum ultraviolet ray irradiation in the BAM solid solution compared to the conventional blue phosphor.
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Y.W. Jeong, T.S. Cho, T.Y Kim, M.C. Choi, J.C. Ahn, J.M. Jeong, J.Y. L ...
Article type: Article
Session ID: IDY2000-200
Published: October 20, 2000
Released on J-STAGE: June 23, 2017
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Influences of sustain pulse-width on electrical characteristrics and luminous efficiency are experimentally investigated for surface discharge of AC-PDP. A square pulse with variable duty ratio and fixed rising time of 300 ns has been used in the experiment. It is found that the firing voltage is decreased as the pulse-width is increased from 1 μs to 5 μs with sweeping frequency range of 10 kHz to 180 kHz. It is also found that the memory coefficient is significantly increased at the critical pulse-width. And the wall charges and wall voltages as well as capacitances are experimentally measured by Q-V analysis method we suggested[1], in terms of the sustain pulse-width in the range of 1 μs to 5 μs under driving frequency of 10 kKz to 180 kHz. And the luminous efficiency is also experimentally investigated in above range of sustain pulse-width with driving frequency of 10 kHz to 180 kHz. It is noted that the luminous efficiency for 10 kHz is much less than that for180kHz are 1.29lm/W and 0.68 lm/W respectivery, since the power consumption for 10 kHz is much less than that for 180 kHz. It has been concluded that the optimal sustain pulse-widgh is in the range of 2.5 〜 4.5 μs under driving frequency range of 10 kHz and 60 kHz, and in the range of 1.5 〜 2.5 μs under driving frequency range of 120 kHz and 180 kHz based on observation of memory coefficient, wall charge, and wall voltage as well as luminous efficiency.
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Zhi-qi Gu, You-xin Huang, Jia-hai Liu, Yi-yong Liang
Article type: Article
Session ID: IDY2000-201
Published: October 20, 2000
Released on J-STAGE: June 23, 2017
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Color reproduction is an important evaluation specification of video display devices. Because of its material, structure and work principle, the color reproduction of colorful PDP is not so good as that of traditional CRT display device. This letter analyses the reasons, and proposes corresponding methods to improve the color reproduction. After all these attempts, the color reproduction of PDP is better than CRT.
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C.P. Lee, Y.S. Yu, S.P. Kao, C.H. Lin, K.L. Chen
Article type: Article
Session ID: IDY2000-202
Published: October 20, 2000
Released on J-STAGE: June 23, 2017
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The sustaining operation stability as terms of a panel design and driving conditions have been studied. The panel design, which has been adopted in this study, has three different discharge gaps between X electrode and Y electrode with a same transparent electrode width and four different transparent electrode width with a same discharge gap. To evaluate the sustaining operation stability, the static operating margin has been measured during the sustaining operation. When the first turn off voltage Vsl is comparatively high, its condition could be regarded as an unstable operation. On the contrary, if the first turn off voltage Vsl is sufficiently low, its condition could be regarded as a stable operating condition. It is found that the sustaining operation stability is strongly depending on the panel design such as discharge gaps as well as driving frequencies and pulse width of sustaining pulse. The short discharge gap has more stability than longer one due to the fast response time. Also, narrow transparent electrode width is more stable than wilder one due to strong electric field distribution in central area of discharge gap. Moreover, the longer pulse width is more stable than shorter one due to the stable wall charge formation. As a minor factor, the driving frequency plays a factor of sustaining operation stability. When the higher frequency is applied, the high density of priming particles are formed in a gas space and facilitate the next sustaining discharge.
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Shi-Joon Sung, Jong-Woo Lee, Jung-Ki Park
Article type: Article
Session ID: IDY2000-203
Published: October 20, 2000
Released on J-STAGE: June 23, 2017
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Makoto Ishiyama, Tomohiro Tanaka, Matsuo Sato, Tatsuo Uchida, Hidehiro ...
Article type: Article
Session ID: IDY2000-204
Published: October 20, 2000
Released on J-STAGE: June 23, 2017
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Microgroove(MG)substrate using a ruling engine was evaluated geometrically and optically. As the result, it was confirmed that the MG substrate had periodic structure and uniform molecular alignment was observed partially. Precise control of the ruling engine promises uniform molecular alignment of LCDs.
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Matsuo Sato, Hidehiro Seki, Tomohiro Tanaka, Isao Nakamura, Makoto Ish ...
Article type: Article
Session ID: IDY2000-205
Published: October 20, 2000
Released on J-STAGE: June 23, 2017
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This paper noted the reflective characteristics on the micro grooves prepared on thin film, in order to control of the molecular alignment of LCD. The authors presented the new system of the opto-electronic property of the surface with fine structure. Micro grooves with fine pitch were cut by diamond cutter under the condition of small pitch(in micron order), small depth(about 500nanometer)and extremely smooth surface(in nanometer order). Repeatability of pitch of the grooves was in order of 0.08μm(80nm). The reflective distribution was researched under the condition on the tilt angle, pitch, randomness of the pitch and bulk materials. It was noted that fine structure of the micro grooves was strongly affected to the alignment of micro cell, that was to say, the molecular rotation and mobility of the liquid crystal. Ultla fine micro grooves prepared by Ruling Engine was usuful to standardization on the reflective characteristrics, or opto-electronic characteristics.
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Chunyang Zheng, Honhjin Gao, Shouyi Xu, Zhiliang Xie
Article type: Article
Session ID: IDY2000-206
Published: October 20, 2000
Released on J-STAGE: June 23, 2017
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A special polymide with function group of strong polarity on main chains is designed and synthesized to investigate the alignment mechanism of liquid crystal on rubbed polimides. AFM is utilized to observe the face of rubbed polyimides. The polyimides rubbed with different depth show different alignment ability. The films rubbed with less depth have lower thermo-stability. However, the rubbing-induced grooves seem same. This is seldom seen in sommon polyimides. The results show that the inter-molecule force between the liquid crystal molecules and the polarized polyimides decided the alignment, and the grooves created in rubbing process are not the main reason for the alignment. Further more, we propose a model for the changes of polymer in rubbing process.
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V.G. Chigrinov, H.S. Kwok, D.A. Yakovlev, G.V. Simonenko, Yu. Podyache ...
Article type: Article
Session ID: IDY2000-207
Published: October 20, 2000
Released on J-STAGE: June 23, 2017
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Modeling Universal System of Liquid Crystal Displays(MOUSE-LCD)software is presented for the calculation of LC electrooptical behavior and optimization of the new LCD prototypes. The present version of MOUSE-LCD software includes the new effective method of optical calculations(modified 2x2 Jones matrix approach). We use the original method of effective smoothing of the LCD elecrooptical response.
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Takashi Hirate, Makoto Uchiyama, Tomomasa Satoh
Article type: Article
Session ID: IDY2000-208
Published: October 20, 2000
Released on J-STAGE: June 23, 2017
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We succeed in preparing the ZnS:Er^<3+> films that show a "red" electroluminescence which has not been reported so far using the deposition equipment developed by us. Although the wavelength values of the emitted light of this ZnS:Er^<3+> film are the same as those of the usual ZnS:Er^<3+> films, the emission intensity of the long wavelength line is stronger than that of the short wavelength line, being opposite to the usual ZnS:Er^<3+> film whose emission color is green.
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Shao-zhen XIONG, Ying ZHAO, Yun HAO, Yao WANG, Zhen-hua ZHOU, Chun-ya ...
Article type: Article
Session ID: IDY2000-209
Published: October 20, 2000
Released on J-STAGE: June 23, 2017
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A negative resistance phenomenon(NRP)in some polymer light emitting diodes(PLED)was observed and analyzed. This NRP appears in devices after long term storage without bias and disappear after consecutively scan the I-V curves over certain bias level. An internal reverse junction was proposed to interpret this NRP. In addition to the NRP, Hysteresis of I-V data over consecutive runs was also observed, similar to the effect frequently observed in non-crystalline inorganic semiconductors. Such field-drifting characteristics can be explained by carrier trapping mechanism.
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Yung-Hui Yeh, Cheng-Xian Han, Chai-Yuan Sheu, Feng-Yu Chuang, Heng-Lon ...
Article type: Article
Session ID: IDY2000-210
Published: October 20, 2000
Released on J-STAGE: June 23, 2017
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An approach to improve the drivecurrent uniformity of the low-temperature poly-Si(LTPS)this film transistors(TFTs)applied to active-matrix organic light-emitting diodes(AMOLED)device was investigated. The non-uniformity feature of LTPS-TFTs is due to the fact that the grain boundaries and sizes of poly-Si are nearly non-controllable during the laser annealing process. In order to obtain the better uniformity of drive current and performance of gray-scale linearity for AMOLED pixels, we suggest that a resistor connected serially to the source terminal of the drive TFT should improve the non-uniformity feature dramatically. After measuring the I-V characteristics, a simulation process based on the basic circuit teory was proceeded to calculate the characteristics with a serially connected resistor. The calculated results revealed that the maximum current variation could be changed from 45%(without a resistor)to 10%(with a serially connected resistor)when the threshold voltage of drive TFT varies 0.3V.
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Bu-xin Zhang, Zhi-lin Zhang, Wen-qing Zhu, Xue-yin Jiang, Shao-hong Xu
Article type: Article
Session ID: IDY2000-211
Published: October 20, 2000
Released on J-STAGE: June 23, 2017
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In this paper, a monochrome organic light emitting diode passive matrix display based on a long life green OLED cell, with a pixel number of 96x60, an equivalent pixel size of 0.4x0.4mm^2 and the pixel gap of 0.1mm, was reported. A good green color image with no crosstalk between pixels could be obtained. The display average luminance at the duty cycle of 1/64 is 100cd/m^2, and the power consumption is 0.6W. The dark room contrast of 1:100 is achieved without using a polarization filter.
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Manabu Ishimoto, Raul A. Baragiola, Kiichi Betsui, Tsutae Shinoda
Article type: Article
Session ID: IDY2000-212
Published: October 20, 2000
Released on J-STAGE: June 23, 2017
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We measured the energy distribution of ion-induced secondary electrons witha cylindrical mirror analyzer(CMA). Also the surface electronic structure is measured by the electron loss spectroscopy(EELS). There is no particular structure in the band gap of the MgO thin film and the gap is 6 eV approximately. However the highest energy of the secondary elecrons is higher than the expected value by the conventional theory.
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Yukio Masuda
Article type: Article
Session ID: IDY2000-213
Published: October 20, 2000
Released on J-STAGE: June 23, 2017
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From the year 2000 to 2001, almost all major electronics display manufacturers will be establishing mass production lines for Plasma Display Panel(PDP)production. Regarding the MgO coating phase of the panel fabrication process, there are some key technical issues to be resolved for the mass production. This paper will introduce ULVAC's methodology to resolve these issues through the latest MgO evaporation system, and will also introduce a prototype system for the integrated panel assembly processes which would have capability of yielding remarkable improvement in panel performance(dioscharge characteristics)and panel fabrication process/ control system suitable for near future production line.
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Duck-Jung Lee, Byeong Kwon Ju, Jin-Wook Jeoung, Young-Jo Kim, Eun-Ha C ...
Article type: Article
Session ID: IDY2000-214
Published: October 20, 2000
Released on J-STAGE: June 23, 2017
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In this work, we have developed a new tubeless packaging technology using an indirect glass-to-glass electrostatic bonding with an intermediate amorphous silicon layer for the application to a plasma display panel(PDP)package. The glass-to-glass bonding for the packaging was performed at low temperature of 200℃ with applying bias of 250V_<dc> in three species mixing gases environment of He-Ne(27%)-Xe(3%). The 3.6-inch mono AC-PDP with 8mm thickness was successfully fabricated and fully emitted. To investigate the application capability of glass bonding technology, the hermetic sealing test of the packaged panel was examined by spinning rotor gauge(SRG)for time variation.
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Sang Jik Kwon, Chang-Ho Lee, Jung Ho Sung, Cha Keun Yoon, Ki-Woong Wha ...
Article type: Article
Session ID: IDY2000-215
Published: October 20, 2000
Released on J-STAGE: June 23, 2017
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We successfully have fabricated an operable PDP panel with a 2-inch diagonal sizw by using the fully vacuum in-line sealing technology for the first time in the world. The sealing temperature of the two plates was around 330℃ which corresponded to a temperature about 120 ℃ lower than that used in a conventionalair environment. The base vacuum level inside the panel before gas filling was about 5x10^<-6> Torr at the time of sealing. Then, a Ne-Xe(4%)mixture gas was introduced into the panel-inside through a tubeless hole in the glass plate until 400 Torr. Subsequwntly, the 'hole-off'process was done by using was sealing in the vacuum chamber. The hole-off time was negligible. Thus, the total elapsed time for the sealing processes was less than 6 hours, including the gas fill and the hole-off processes. The panel was successfully operated with a starting voltage of 190 V driven by 50-kHz AC mode, giving a sufficiently high and uniform brightness for all the pixels.
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Jihwa Lee, Sup Moon Kyoung, Ki-Woong Whang
Article type: Article
Session ID: IDY2000-216
Published: October 20, 2000
Released on J-STAGE: June 23, 2017
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Min-Cheol Lee, Min-Koo Han
Article type: Article
Session ID: IDY2000-217
Published: October 20, 2000
Released on J-STAGE: June 23, 2017
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We have proposed and fabricated two new poly-Si TFTs in order to reduce vertical and lateral electric field near the drain respectively. Vertical electric field is reduced by air-cavity at the edge of gate oxide and lateral electric field is reduced by selectivery doped region in the channel. Due to the reduced vertical and lateral electric field near the drain, the leakage current of both new poly-Si TFTs is considerably suppressed and device stability is also improved.
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A.A. Muravski, S.Ye. Yakovenko, C. Crell, A.D. Wieck
Article type: Article
Session ID: IDY2000-218
Published: October 20, 2000
Released on J-STAGE: June 23, 2017
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We present a new kind of thin film transistors(TFT)for active matrix liquid crystal displays(AMLCD), the in-plane-gate(IPG)transistors. Direct curernt properties of such TFTs are investigated and the model describing their behaviour is proposed. The advantages of IPG transistors are outlined.
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Chu-Jung Shih, Li-Ming Wang, Shih-Chang Chang, I-Min Lu, I-Wei Wu
Article type: Article
Session ID: IDY2000-219
Published: October 20, 2000
Released on J-STAGE: June 23, 2017
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Laser crystallization and hydrogenation technologies are the most critical processes in the manufacturing of low temperature poly-Si(LTPS)TFT's. In this paper, the effects of single-pulse laser beam profile on the crystallization of poly-silicon were investigated. In addition, the surface roughness of poly-Si films annealed by various laser-overlapping ratios was carried to verify the effects of laser beam profiles. Furthermore, the electrical characteristics of hydrogenated LTPS TFT's by H_2/Ar RF plasma or PECVD silicon nitride capping layer were also investigated as a function of the hydrogenation time.
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Muju LI, Yihua LI, Gang WANG, Chuanzhen LIU, Shiyang JI, Dahai WANG, Y ...
Article type: Article
Session ID: IDY2000-220
Published: October 20, 2000
Released on J-STAGE: June 23, 2017
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The signal deformation due to RC(Resistivity-Capacitance)delay is simulated for high-information-content displays based on a simplified equivalent circuit model. The electrode resistivity requirement for large size and high resolution TFT AM-LCDs is scaled. Al-based metal films such as Al-Ta and Al-Cr alloys as well as Al-Mo clay are eposited by magnetron sputtering. Asdeposited films are annealed in vacuum at 400℃ to examine their thermal stability. The samples are characterized with SEM and Four-Probe measurement. The optimum sputtering conditions are obtained.
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Chi-Jain Wen, Yih-Jun Wong, Li-Sen Chuang, Ching-Chao Chang
Article type: Article
Session ID: IDY2000-221
Published: October 20, 2000
Released on J-STAGE: June 23, 2017
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In this paper, we will discuss the optical properties of a reflective TFT-LCD panel with an asymmetric structure reflector and those of a reflective LCD with symmetric structure reflector. We had presented a reflective TFT-LCD with an internal asymmetric diffusive micro slant reflector(DMSR). The new asymmetric DMSR is used to enhance the light efficience. The DMSR structure is optimized to obtain a desired light distribution cone with asymmetric characteristics. A reflective LCD with the asymmetric DMSR is almost suitable to be used in the collimated illumination condition. The traditional symmetric bump structure reflector can have well light utilization in the diffused illumination condition. The diffusive property of the new DMSR design will redistribute the reflected light so that an asymmetric viewing cone can be generated to increase the brightness in this area. The asymmetric property of the cone is a result of the slant structure. The experimental results demonstrate that the DMSR structure can redirect the collimated light in a designated area. Normal environment contains both the collimated and diffusive light. With the DMSR structure, we can utilize both light sources and make our panel much brighter, suitable for many information applications.
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Z. Sun, J.S. Chen, B.K. Tay, Y.J. Li, S.P. Lau, G.Y. Chen
Article type: Article
Session ID: IDY2000-222
Published: October 20, 2000
Released on J-STAGE: June 23, 2017
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The electron field emission properties of the polycrystalline diamond films in various sizes(10-10^3 nm)prepared from hydrocarbon precursor by chemical vapor deposition were studied. The nanocrystalline diamond films exhibit efficient electron field emission, e. g. low threshold emission field, high emission current density and high emission luminance spots density on the anode. The electron field emission properties of the films depending on the film structures, thickness, grain size and sp^3/sp^2 phases, were compared. The electron emission stability and emission site density of the diamond film as an emitter was discussed for practical application of flat panel display.
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H Nakajima, M Kurita, H Kominami, Y Nakanishi, Y Hatanaka
Article type: Article
Session ID: IDY2000-223
Published: October 20, 2000
Released on J-STAGE: June 23, 2017
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Preparation of SrGa_2S_4:Eu thin films showing green-emission has been carried out by multi source depositiontechnique, then the structural and luminescent propertiesof the films were characterized. It was shown in this experiment that the crystallinity, luminance and chromaticity of green emission were improved by the annealing in H_2S or Ar atmosphere. The film annealed at 800℃ in H_2S showed a luminance of about 740cd/m^2 and CIE coordinates of(0.36, 0.60)under excitation with 2kV and 60μA/cm^2. Moreover it showed a luminance of about 60cd/m^2 under excitation with 250V.
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Xiaosheng Qu, Dejie Li, Baolun Yao
Article type: Article
Session ID: IDY2000-224
Published: October 20, 2000
Released on J-STAGE: June 23, 2017
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A distribution graph of electronic potential and track near cathode microtip in FFEA was obtained by finite difference simulating three dimensions for texture of double gate FFEA. It is cleary a result that electrons focusing effect becomes stronger as the focus electrode bias decreases toward the tip potential. If negative focusing electrode bias, we may affirm that the electronic lens repels almost all electrons and finally return to the grid electrode. The potential of gate electrode almost dose not affect the trajectories of electrons from microtip by the quantum tunneling metal cathode, which can only increase electronic amount as voltage applied gate become more higher. The electrons that are of bigger shooting angle will be embarrassed as diameter of focus electrode reduce.
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Enze Luo, Zhengjun Wu, Hong Luo, Wei Luo, Yu Shen
Article type: Article
Session ID: IDY2000-225
Published: October 20, 2000
Released on J-STAGE: June 23, 2017
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Field ion display(FID)is a novel flat panel display, It can overcome the difficulties of the field emission display(FED)and conserve the high quality of color image and low cost of the cathode ray tube(CRT). This paper introduces the theories of FID at first, and explains its structure and working principles then.
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HIROAKI YOSHIKAWA, MIEKO SUZUKI, HIROKAZU FURUE, SHUNSUKE KOBAYASHI
Article type: Article
Session ID: IDY2000-226
Published: October 20, 2000
Released on J-STAGE: June 23, 2017
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A polarizerless reflective guest-host LCD, which exhibits high luminance and good legibility has been fabricate by using NLC with??<0 that is doped with nanomaterial molecules, fullerene C_<60> and dichroic dye molecules, where the NLC_s are homeotroptically aligned without rubbing. It is considered that the doped C_<60> molecules may play a role in reducing the order parameter of the host NLC, and in turn, the contrast ratio is enhanced.
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T Yamashita, T Takahashi, S Kobayashi
Article type: Article
Session ID: IDY2000-227
Published: October 20, 2000
Released on J-STAGE: June 23, 2017
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New optical logic gates have been fabricated by stacking two ferroelectric liquid crystal optical diodes(LC-ODs)fabricated by polymer stabilization. The device exhibitsa strong asymmetric electrooptic performance;for this reason, the device is referred to as a liquid crystal optical diode. The liquid crystal logic gates fabricated by stacking two LC-ODs are shown to enable the performance of logic calculations, such as AND, NAMD, OR, XOR, and XNOR.
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Fumiaki Yamada, Cecilia Hellermark, Hajime Nakamura
Article type: Article
Session ID: IDY2000-228
Published: October 20, 2000
Released on J-STAGE: June 23, 2017
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Reflective liquid crystal display is suitable for portable devices because the power consumption is lower by not using a backlight. It is recognized that the key for the better quality display are the reflectivity and the contrast ratio. Guest-host type liquid crystal display with quarter-lambda plate(QWP)is expected to have high contrast and reflectivity. We fabricated a quarter lambda plate using several photo polymerizable liquid crystal monomers and evaluated their optical performances.
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Xinyu Zhu, Hai Jing, Bailiang Yang, Zhihua Ling, Ximin Huang
Article type: Article
Session ID: IDY2000-229
Published: October 20, 2000
Released on J-STAGE: June 23, 2017
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A novel Reflective In-Plane Switching mode(RIPS)Liquid Crystal Display(LCD)with single polarizer is proposed in this paper. A quarterwave retardation film is added between liquid crystal(LC)and reflector and In-Plane Switching driving mode is adopted. Using Space Parameter Representation method, we obtain both normal black and normal white reflective LCD mode with low color dispersion and wide viewing angle.
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J.S. Lin, M.C. Wang, S.L. Lu, T.T. Yeh
Article type: Article
Session ID: IDY2000-230
Published: October 20, 2000
Released on J-STAGE: June 23, 2017
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Conventional electrical-controlled-birefringence(ECB)LCD has difficulty of producing the color of pure red. To solve this problem, we have performed theoretical and experimental study to improve the color characteristics of reflective ECB-mode LCD. The enlargement of the trace in chromaticity diagram was found possible by using ECB-HAN mode and proper control of the angle of polarization films.
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Huangfu Lujiang, Chang-chun Zhu, Liu Weihua
Article type: Article
Session ID: IDY2000-231
Published: October 20, 2000
Released on J-STAGE: June 23, 2017
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A novel flat-panel structure for FED is proposed, in which aligned CNT film cathode of direct growth is mounted directly on the base plate with elastic assembling technology. The vacuum package is fabricated with some VFD-like process technologies. This structure and the corresponding technologies are stable and reliable at a modest cost. The FED sample of pixel display of this structure is made to verify the display structure and analyze characteristics.
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Jae-Hoon Jung, Kyung-Vin Park, Gong-Seok Park
Article type: Article
Session ID: IDY2000-232
Published: October 20, 2000
Released on J-STAGE: June 23, 2017
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We report the characteristics of carbon nanotubes by MPCVD(Micro Plasma Chemical Vapor Deposition) under variable treatment time of H_2 plasma on Ni/Fe alloy substrate at room temperature. The surface of Ni/Fe alloy was transformed into Ni droplets by H_2 plasma treatment whose diameter were 10〜250nm, and carbon tubes were grown well by increasing H_2 plasma treatment time. It was confirmed that the size of Ni droplet suitable for carbon nanotubes growth is limited to around 20〜30nm. The TEM images show straight carbon nanotubes with uniform diameter. The outside and inside diameter of the carbon nanotubes are 30〜50nm and 5〜7nm, respectively. About 30 sheets of graphite layers can be clearly seen. The turn-on field is decreased from 3.5 to 0.5V/μm by increasing plasma time and the emission current density is increased from 2x10^<-6> to 2x10^<-2> by increasing plasma time.
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Yu-Yang Chang, Jyung-Dong Lin, Cheng-Chung Lee, Feng-Yu Chuang, Jane-H ...
Article type: Article
Session ID: IDY2000-233
Published: October 20, 2000
Released on J-STAGE: June 23, 2017
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A fully sealed field emission display(FED)device, using carbon nanotubes(CNTs)as emitters was fabricated. A vacuum fluorescent display(VFD)-like diode type panel showing character image was also demonstrated. The raw CNTs chunks were crushed, purified, dispersed, mixed with organic additives and then screen-printed on silver electrode as cathode emitters. And the ITO anode plate, printed with phosphors, was separated from cathodes by 80μm printed spacers. The display performed a turn-on voltage as low as 200V, and the light emission under 300V with brightness of 500nits. Less than 15% degradation of emission current was observed after 1500 hours operating. The technical development, including design and fabrication of the phosphor, nanotube emitters and vacuum package process was described.
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Dean Hutchins, I.Yu. Pavlovsky, R.F. Fink, Zvi Yaniv
Article type: Article
Session ID: IDY2000-234
Published: October 20, 2000
Released on J-STAGE: June 23, 2017
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For many large area display applications(greater than 40"diagonal), low cost substrate materials are required. Until recently, carbon film cathodes were deposited on Si wafers or ceramic substrates, which are impractical for large area applications. We recently developed processes for depositing carbon films on inexpensive substrates such as glass and steel, which demonstrate excellent field emission qualities for display applications. These carbon films achieve emission current densities of over 40mA/cm^2 at fields of less than 〜 6V/micron, with good uniformity, sufficient for many display applications. This paper presents and discusses the results.
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Wujun Yang, Jiemin Gong, Ning Zhao
Article type: Article
Session ID: IDY2000-235
Published: October 20, 2000
Released on J-STAGE: June 23, 2017
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In this article, the AMLCD(Active Matrix Liquid Crystal Displays)performances are compared with CRTs's. A brief prospect about the application fields of AMLCD is given. Human factors were pointed out to be an important factor for designing and selecting display mediums. The status quo of human factors studies on AMLCD displays in the world are comprehensive reviewed. Some experiment studies by the authors are illustrated. A cockpit instrument board simulator is conducted. The simulator is configured with a LCD monitor and a CRT monitor respectively. Eight students participated in the evaluation of the image quality. Finally, the experiment results and analysis are presented.
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Jiemin Gong, Guanwen Hua, Zhenghua Zhang, Meiying Yu
Article type: Article
Session ID: IDY2000-236
Published: October 20, 2000
Released on J-STAGE: June 23, 2017
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Cathode ray tube(CRT)display and Liquid crystal display(LCD)were compared for their difference on visual performance by experiment. Results indicate that the human eye's ability of discrimination for lighter colors on LCD was better than on CRT, however, it was worse on LCD than on CRT for darker colors. In addition, detection time of identification on LCD was significant less than on CRT. Results also indicate that the sensitivity of human eye for the variation of three parameters of HLS color model was different, that is, the eye was more sensitive for lightness and hue than for saturation. Generally, when the absolute value of the normalized contrast of foreground color and background color is comparative large, the visual performance will be better on LCD as well as on CRT. Increasing the difference of saturation between foreground color and background color can improve visual performance of display units.
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Jin-Woo Park, Jae-Hong Jeon, Min-Cheol Lee, Min-Koo Han
Article type: Article
Session ID: IDY2000-237
Published: October 20, 2000
Released on J-STAGE: June 23, 2017
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A new gate-to-data line inter-crossover employing the recessed gate-line and the data line floated on air at the point of the line intercrossover has been proposed in order to reduce the line-crossover capacitance for AMLCD panel. Experimental results show that the signal delay is reduced considerably because the proposed structure is composed of a low-dielectric air-gap between gate and data line inter-crossover while the conventional one employs an oxide as a dielectric material. The proposed structure fabricated in the oxide trench is planarized in the TFT panel in order to improve the mechanical property of the structure without sacrificing the capacitance and more photolithography masks. The proposed structure is considerably durable under the mechanical stress such as rubbing or spacer processes. The signal delay of new panel structure for AMLCD is decreased by about 6 times compared with that of the conventional panel.
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