-
Article type: Cover
Pages
Cover1-
Published: February 14, 1997
Released on J-STAGE: June 23, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
-
Article type: Index
Pages
Toc1-
Published: February 14, 1997
Released on J-STAGE: June 23, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
-
W.M. Lo, Andrew Kung, Yvonne Chan, Vincent W.S. Wong
Article type: Article
Pages
1-7
Published: February 14, 1997
Released on J-STAGE: June 23, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
Traditionally, the LCD driver chip has been playing the simple role of signal driving for LCD pancls. However, with the recent trends of moving towards highly integrated, compact, light-weight, and long-battery life in mobile applications, such as cellular, pager and PHS, both the function and package considerations of the LCD driver chips are becoming critical to fulfil these requirements. This paper will present the requirements and design of the LCD driver chip for mobile communication applications.
View full abstract
-
Shaozhen Xiong, Yu huang, Ying Zhao, Junsong Wang, Zhenhua Zhou, Xicha ...
Article type: Article
Pages
9-13
Published: February 14, 1997
Released on J-STAGE: June 23, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
We make some slight reforms on the full digital LCD controller IC MSM6255GS. So the output signals of MSM6255GS become suitable for TFT-LCD, and the MSM6255GS is made a multi-gray-level display system controller. An adapter with the MSM6255GS has been developed, with which a good image has been reached.
View full abstract
-
Byunghoo Jung, Ilgon Kim, Gyusun Moon, Yoonseok Jang, Junho Joung
Article type: Article
Pages
15-18
Published: February 14, 1997
Released on J-STAGE: June 23, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
To improve the brightmess of TFT-LCD, light leakage area induced by liquid crystal disclination wall should he minimized. In this paper, we revise the new asymmetric pixel electrode design that reduces the light leakage induced by LC disclimation. The capacitive coupling between pixel electrode and metal line has been imvestigated. The signal distortion indaced by compling can be removed by using either thick insulntor between pixel electrode and metal line or blocking layer between them.
View full abstract
-
Y.J. Choi, J.H. Kim, S.B. Kwon
Article type: Article
Pages
19-23
Published: February 14, 1997
Released on J-STAGE: June 23, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
We investigated the modified crystal rotation method in which a pair of prisms attached to the LC cell. We derived the formulation of phase difference and confirmed the range of measurement. For the individual case of 10°, 20°, 30° wedge angle of prism, we compared the simulation result with experimental result. The pretilt angle can be estimated in the full range of 0°〜90°by this method.
View full abstract
-
L. Jia, S.P. Wong, I.H. Wilson, S.K. Hark, S.L. Zhang, Z.F. Liu, S.M. ...
Article type: Article
Pages
25-27
Published: February 14, 1997
Released on J-STAGE: June 23, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
The photoluminescence (PL) peak of the porous Si (PS) will shift towards blue after the sample is treated by oxidization in ozone atmosphere and deoxidization in HF. It proves that the PL origin is due to the quantum confinement (QC) effect. By using two-step anodization to form the PS, we find that the QC effect is also important in the formation of the PS.
View full abstract
-
Yong Qiu, Zhiliang Xie, Deqiang Zhang, Xinqi Song
Article type: Article
Pages
29-33
Published: February 14, 1997
Released on J-STAGE: June 23, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
Excitation mechanism of dye molecules which were molecularly dispersed in poly (N-vinylcarbazole) electroluminescent thin film has been investigated. It was suggested that the Forster resonance energy transfer from polymer to dye molecules might be the major mechanism of the excitation of the fluorescnet dopants. Based upon the comparision of the results in films and solutions, it was concluded that the excimer of carbazole groups acted as the energy donor.
View full abstract
-
Xichao Mo, Yuanyue Zhang, Chunya Wu
Article type: Article
Pages
35-36
Published: February 14, 1997
Released on J-STAGE: June 23, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
This paper discusses a new grayscale model for video LED displays. The model further reduces the grayscale distortion in LED displays and produces better video images than simple RGC model does by simulating CRT performance and adapting digital video data for LED displays.
View full abstract
-
Luo Enze
Article type: Article
Pages
37-41
Published: February 14, 1997
Released on J-STAGE: June 23, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
The paper presents the fundamental principles of field-emitter display (FED) such as the field emission effect, tunnel effect, tip effect and field emission formulas. And then the structural design of FED includes the field emitter arrays (FEA), low voltage fluorencent screen and vacuum pack are introduced.
View full abstract
-
Kazutoshi Iida
Article type: Article
Pages
43-44
Published: February 14, 1997
Released on J-STAGE: June 23, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
Liquid Crystal Display (LCD) assembly involves various applications of ultra violet (UV) and visible light curable adhesives such as temporary bonding for alignment in cell assembly process, main sealng (gasketing), charge port sealing (end sealing), ITO protection coating, COG (chip on glass) cover coating, metal pin terminal bonding and flexible connector sealing. UV and visible light curable adhesives provide improved reliability and cost saving by automated assembly technology.
View full abstract
-
Jinggang Zhao, Zaigang Sun, Peng Sun, Zemin Yang
Article type: Article
Pages
45-47
Published: February 14, 1997
Released on J-STAGE: June 23, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
In IR spectral region, the maximum transmittance and its corresponding twist angle in twisted nematic effect will be caculated simultaneously on the condition of different wavelengths. We see that the transmittance decreases as the wavelengths increases and the maximum transmittance approaches to small twist angle as the wavelengths increases from the relationship of λ-φ-T.
View full abstract
-
Shohei Naemura, Atsushi Sawada
Article type: Article
Pages
49-53
Published: February 14, 1997
Released on J-STAGE: June 23, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
Liquid crystalline substances were characterized for the stability by the conductivity and its change after a heat stress. Microscopic investigations clarified the role of ions in the conductive property, providing the importance of the behavior of ions, which is characteristic of each liquid-crystalline substance class, in respect to the stability. Improvement of the stability was confirmed on liquid-crystalline mixtures for low voltage operation, introducing the novel concept and the new substances.
View full abstract
-
H. Nakamura, X.T. Li, S. Kobayashi, Y. Iimura
Article type: Article
Pages
55-57
Published: February 14, 1997
Released on J-STAGE: June 23, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
The photopolymer material of poly (vinyl cinnamate) (PVCi) has been used to align liquid crystal molecules using linearly-polarized UV light, and the LC alignment mechanism on the films has been investigated. Comparing the LC alignment on rubbed PVCi films with that on UV-exposed PVCi films, it is shown that the side chains of PVCi molecules strongly interact with the LC molecules on the PVCi films and thus the alignment mechanism on linearly-polarized UV-exposed PVCi films is due to the anisotropic van der Waals interaction between LC molecules and optically-anisotropic PVCi films arising from the photo-induced anisotropic side chain distribution on the films.
View full abstract
-
Haifeng Li, Xu Liu, Peifu Gu, Yanping Zhang, Jingfa Tang
Article type: Article
Pages
59-61
Published: February 14, 1997
Released on J-STAGE: June 23, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
The typical optical systems of LCLV projectors are proesented, and their optical characteristics such as uniformity, color and contrast ratio are discussed.
View full abstract
-
J.M. Kim, J.P. Hong, N.S. Park, J.W. Kim, J.H. Choi, J.H. Kang, J.E. J ...
Article type: Article
Pages
63-67
Published: February 14, 1997
Released on J-STAGE: June 23, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
We report the development of 4"full color FED devices with the reliability analysis. Each pixel is composed of 4900 tips, which results in 80 million tips for 4"color diagonal panel. The hole pattern of the chromium gate is maintained at 1.1±0.1μm. The low voltage phosphors such as Y_2O_2S : Eu, ZnS : (Ag, Cl, Al), ZnS : (Cu, Al, I) for red, blue and green with special surface treatments are developed and their related screening technologies are studied with electrical analysis. The fully moving images are displayed at the anode bias of 250 volts. The emission current profile of the field emission for the color anode is well investigated with the color anode patterning. We analyze the relationship between the electron emission profile on the full panel. The brightness at white color mode of color FED is approximately 80cd/m^2.
View full abstract
-
Baoping Wang, JohnnyK.O. Sin, M.C. Poon, Chen Wang, Yongming Tang
Article type: Article
Pages
69-73
Published: February 14, 1997
Released on J-STAGE: June 23, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
In this paper, gate current characteristics of the single-and double-gate race-track-shaped field emitter structures are reported. The gate current characteristics are calculated by the finite-difference method in Non-Orthogonal Curvilinear Coordinate System and the fourth-order Runge-Kutta method. Numerical simulations show that tum-on voltage of the double-gate structure is reduced by 30% and the ratio of anode current to gate current is increased by 36 times at a gate voltage of 350 V compared to the single-gate structure
View full abstract
-
YoonHo Song, JinHo Lee, SungWeon Kang, ByoungGon Yu, KyoungIk Cho, Hyu ...
Article type: Article
Pages
75-76
Published: February 14, 1997
Released on J-STAGE: June 23, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
Gated polycrystalline silicon field emitter arrays have been fabricated by using a combined dry and wet etching technique for tip formation and a photoresist etch-back process for gate opening. The fabricated emitter with a tip radius of 〜100 A showed electron emissions at a gate voltage of 45 V, comparable to single crystalline silicon tips processed with a sharpening oxidation. The developed method can be applicable to glass-based field emitter displays with semiconductor IC technologies.
View full abstract
-
JinHo Lee, YoonHo Song, SungWeon Kang, ByoungGon Yu, KyoungIk Cho, San ...
Article type: Article
Pages
77-78
Published: February 14, 1997
Released on J-STAGE: June 23, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
We have fabricated and characterized silicon field emitter arrays by Chemical-Mechanical-Polishing (CMP) process for a clearly cutted gate electrode that was exactly aligned to the emitter. A very high etching selectivity (> 200 : 1) between the gate electrode and the dielectric was used for preveating the tip from etching off during the CMP. Furthermore, focusing electrodes were also fabricated by the CMP process.
View full abstract
-
JaeHoon Jung, ByeongKwon Ju, YunHi Lee, MyungHwan Oh, Jin Jang
Article type: Article
Pages
79-83
Published: February 14, 1997
Released on J-STAGE: June 23, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
We have studied the improvement of electron emission by diamond-like carbon (DLC) coating on Mo field emitter arrays by a layer-by-layer technique using plasma enhanced chemical vapor deposition. The turn-on voltage was lowered from 55V to 30V by 20 nm DLC coating and maximum emission current was increased from 166μA to 831μA. Also the gate voltage required to get the anode current of 0.1 (μA/emitter) decreases from 77V to 48V. Furthermore, the emission current from DLC coated Mo FEAs is more stable than that of non-coated Mo FEAs.
View full abstract
-
Tang Andong, Shang Luping, Zhao Xiaowei, Wang Shimin
Article type: Article
Pages
85-89
Published: February 14, 1997
Released on J-STAGE: June 23, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
SiO_2 films on glass substrate are widely applied in Liquid Crystal Device (LCD) manufacturing. Based upon the P-etch measurement, the density and the thickness of the SiO_2 films can be measured. The authors propose a simple and fast way to evaluate the performance of SiO_2 coatings for industrial usage.
View full abstract
-
J Qiu
Article type: Article
Pages
91-98
Published: February 14, 1997
Released on J-STAGE: June 23, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
Methyltrichlorosilane was used to synthesize ladderlike polymethylsilsesquioxane (PMS) in this study. The synthetic way of PMS and a new hydrolysis method were designed. PMS with regular ladder structure was obtained. The influence of various conditions on the structure of PMS was discussed. The structures and properties of PMS were studied with infrared spectroscopy and thermogravimetric analysis (TGA). Experimental results show that the ladder structure and molecular weight of PMS are closely related to preparative conditions and PMS with ladder structure is possessed of excellent heat resistance.
View full abstract
-
Zhencai Zhu, Weifang Qin, Jianxin Shao, Ruli Wang
Article type: Article
Pages
99-101
Published: February 14, 1997
Released on J-STAGE: June 23, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
The zig-zag defects in a rubbed polyimide aligned surface stabilized ferroelectric liquid crystal (SSFLC) cell may be eliminated by applying a low frequency AC electric field in the SmC phase. The cell shows uniform contrast, good bistability and fast response.
View full abstract
-
Shouqian Ding, Jinyue Chen, Xia Sheng, Wenshen Li, Guangyun Zhu, Yan J ...
Article type: Article
Pages
103-107
Published: February 14, 1997
Released on J-STAGE: June 23, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
A novel automatic and multifunctional system for measuring and analyzing magnetic deflection field has been developed. It can measure the field parameters and the magnetic potential based on newly-invented"Double Coil Regression Method"precisely. According to these measured data, all kinds of the third and fifth deflection aberration coefficients as well as spatial field distribution and electron trajectories can be obtained. This instrument is very useful in designing and testing a conventional DY especially for a high definition deflection yoke.
View full abstract
-
Haiguang Zhou, Zhilin Yang
Article type: Article
Pages
109-113
Published: February 14, 1997
Released on J-STAGE: June 23, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
On the basis of the heat convection Fabry-Peort, thermal expansion and thermo-refractive index, We deduced a relation of low power optical bistability with eigen F-P cavity. The experiment was carried out with He-Ne laser and F-P cavity filled with 5CB liquid-crystal film.
View full abstract
-
Yulin Li, Zhengquan He, Zhisheng Yun, Jifang Liu, Xunyong Xu, Xueguang ...
Article type: Article
Pages
115-119
Published: February 14, 1997
Released on J-STAGE: June 23, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
New CdS (Se)/CdTe solid state liquid crystal light valves (LCLVs) coupled with a cathode ray tube (CRT) has been developed and its sample production has been started in our Optical Information Processing Lab. Connected to a computer or a video camera, the CRT coupled LCLV spatial light modulator (CRT-LCLV SLM) can project a full-color image on screen up to 1 to 3 meter (in diagonal dimension). Display size and resolution can be varied electronically over a wide range. We have measured the imaging characteristics of the device and examined its availability as an electro-optical converter for an enlarged electronic image. The general configuration and main specifications, as well as the results of a series of experiments for the device, are given. LCLVs, large screen projection, optical information processing, optical switch, SLMs
View full abstract
-
Zhilin Yang, Haiguan Zhou
Article type: Article
Pages
121-122
Published: February 14, 1997
Released on J-STAGE: June 23, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
I.C. Khoo reported the observation of nonlinear photo-refractive effect in pure aligned liquid crystals in later 1994. We analyzed the phenomena and developed a theoretical model of photorefractivity in nematic liquid crystals, and the experimental results are in good agreement with the theory.
View full abstract
-
Ziqiang Huang, Giuseppe Chidichimo, Attilio Golemme
Article type: Article
Pages
123-127
Published: February 14, 1997
Released on J-STAGE: June 23, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
We derived the expression for the electric field in an isolated nematic droplet suspended within an isotropic medium. The field is a function of the dielectric and conductive properties of the materials and of the orientation of the liquid crystal. Results show : 1. the field within the droplet is uniform and 2. its direction is different from that of the applied field. Above a certain threshold field, director of liquid crystal is reoriented while the field in the droplet simultaneously lowered down. This mechanism contributes to worsen the multiplex addressing applications of PDLC films in display.
View full abstract
-
Hong Sun, Chunyang Zheng, Hong Tang, Hongjin Gao
Article type: Article
Pages
129-131
Published: February 14, 1997
Released on J-STAGE: June 23, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
IR dichroism and optical anisotropy of linearly Photopolymerized (LPP) alignment film of polyvinyl cinnamate has been quantitatively investigated, and the changing trend of anisotropy via exposure time was illuminated Liquid crystal cells oriented with two different LPP alignment films with considerable pretilt angle were obtained. The pretilt angle via the exposure time has been studied.
View full abstract
-
Xinhua Wan, HoiSing Kwok, BenZhong Tang
Article type: Article
Pages
133-136
Published: February 14, 1997
Released on J-STAGE: June 23, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
Hydrosilylation of acetylene with a chiral silane, R-(+)-methyl-1-naphthyl-phenylsilane [R-(+)-Me-NpPhSi^*H], in the presence of H_2PtCl_6xH_2O proceeds with retention of configuration of the stereogenic silicon center and produces a chiral vinylsilane or sllylethylene [S-(+)-MeNpPhSi^*Vi] of high optical purity under mild condition (50℃) in high chemical yield (85%). Anionic polymerizations of the chiral silylethylene monomer by an achiral initiator n-BuLi yield optically active polymers with [α]_D^<20> up to -28.1°, while polymerizations of the racemic monomer by a chiral initiator n-BuLi/(-)-sparteine produce polymers with [α]_D^<20> up to +275°. Thus the sign of optical rotation of the polymers can be controlled by different combination of monomer and catalyst. Magnitude of the optical rotation can be "tuned"by changing polymerization temperature with high temperature generally favoring random propagation. All the polymers have low polydispersity indexes (M_w/M_n down to 1.02) or possess narrow molecular weight distributions. Spectroscopic characterization confirms the molecular structure of polymers to be poly (silylethylene), that is, a polyethylene main chain with a bulky methyl-1-naphthyl-phenylsilyl side chain. The polymers are thermally stable (onset temperature for weight loss in air : 380℃), possess high glass transition temperature (T_g > 380℃), and may find a wide range of applications in the optical display systems.
View full abstract
-
Sheng Ping, TieZheng Qian
Article type: Article
Pages
137-139
Published: February 14, 1997
Released on J-STAGE: June 23, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
We numerically solve the Ericksen-Leslie hydrodynamic equations for a number of twisted nematic liquid crystal cells. We show that when an applied electric potential is varied abruptly across the cell, the resulting fluid motion can play a critical role in inducing the rotation of directors. The physics underlying the seemingly abnormal behavior of director rotation is investigated.
View full abstract
-
P.W. Cheng, H.C. Huang, H.S. Kwok
Article type: Article
Pages
141-145
Published: February 14, 1997
Released on J-STAGE: June 23, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
A video interface controller for reflective silicon-based AMLCD was developed. By using field programmable gate array (FPGA) as an application specific integrated circuit (ASIC), system design flexibility and fast prototyping were achieved. This controller can display both progressive VGA and interlaced NTSC signals in various data inversion formats. The video interface controller and associated silicon based AMLCD panel can lead to a versatile multimedia display system.
View full abstract
-
AnishKumar K.P., JohnnyK.O. Sin, HoiS. Kwok
Article type: Article
Pages
147-151
Published: February 14, 1997
Released on J-STAGE: June 23, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
Leakage current mechanism in polysilicon TFTs fabricated on a non-uniform film is investigated. The approach utilizes test structures which have non-uniform film thickness at the drain, source and channel regions. An order of magnitude reduction in leakage current at high drain bias is observed in the thick drain TFT structure compared to the thin drain structure. The improvement on the leakage current is due to the reduction in electric field at the thicker drain. The electric field reduction in the thick drain structure is verified using two-dimensional simulations. The influence of the electric field on the anomalous leakage current is investigated with the grain boundary trapping effects separated out.
View full abstract
-
X. Zou, D.P. Webb, Y.C. Chan, Y.W. Lam, Z. Xu
Article type: Article
Pages
153-157
Published: February 14, 1997
Released on J-STAGE: June 23, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
The gate-to-source parasitic capacitance in a-Si TFT consists of both geometric and apparent ones, in which the former is caused by the geometric overlapping between gate and source electrodes, and the latter is originated from the field overlapping due to fringe of electric field by gate and source electrodes in a-Si TFT. This presentation has given a detailed analysis on both geometric and apparent parasitic capacitances so that a contour map used to determine the storage capacitance in a-Si TFT for active matrix LCD has been drawn up. Parasitic capacitance, fringe of field, storage capacitance, thin film transistors.
View full abstract
-
F.H. Yu, J. Chen, S.T. Tang, H.S. Kwok
Article type: Article
Pages
159-163
Published: February 14, 1997
Released on J-STAGE: June 23, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
Reflective liquid crystal displays that consist of just one polarizer and a rear reflector are reported. No retardation film is needed to compensate colour dispersion. An operating mode that possess excellent quasi black/white contrast and low colour dispersion is found. In terms of both performance and production cost, this new display mode is better than existing supertwisted nematic displays.
View full abstract
-
YoonHo Song, YongMin Kim, ByungSung O, JinHo Lee, KyoungIk Cho, HyungJ ...
Article type: Article
Pages
165-168
Published: February 14, 1997
Released on J-STAGE: June 23, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
Degradation of electron emission characteristics in silicon field emitters and its mechanism have been studied. The silicon field emitters with a triode type were fabricated by using a chemical-mechanical-polishing process. There exists a critical biasing time, t_<c'> at which the anode current starts to be degraded predominantly. The t_c is shortened as the anode current increases. Also, the emission current repeatedly measured within t_c with a complete relaxation after each measurement would not be degraded even though the total biasing time exceeded the critical time. The experimental results indicate that the degradation in silicon field emitters mainly orlginates from thermal instability of the Si tip due to Nottingham heating.
View full abstract
-
CheolMin Park, JuhnSuk Yoo, JaeHong Jun, HongSeok Choi, ByungHyuk Min, ...
Article type: Article
Pages
169-172
Published: February 14, 1997
Released on J-STAGE: June 23, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
We have fabricated a new offset gated device by employing photoresist reflow and measured various experimental data of new device, such as hydrogenation results and high frequency characteristics and analyze device characteristics as a function of driving frequency. Our devices have unique gate pattern and the hydrogenation effect is somewhat different from the previous results. The results suggest that with same offset length, the device with wider space between the main-gate and the sub-gate is more advantageous for hydrogenation Experimental results show that the leakage current of the new device is two orders of magnitude lower than that of the non-offset gated device, while the ON current of the new device is almost identical with the non-offset gated device in typically used frequency (10kHz〜100kHz).
View full abstract
-
JuhnSuk Yoo, ChunHong Kim, KwonYoung Choi, ByungSung Bae, MinKoo Han
Article type: Article
Pages
173-176
Published: February 14, 1997
Released on J-STAGE: June 23, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
We propose a new pixel design for high resolution poly-Si TFT LCD. The proposed pixel element consists of double gate poly-Si TFT and double layer storage capacitor in order to reduce the pixel size without sacrificing the image brightness. The double layer storage capacitor is consisted of two parallel-connected storage capacitor stacked vertically and its capacitance is twice as large as the conventional parallel-plate capacitor with same area. The double gate TFT has two gates at the top and the bottom of the channel and drives twice as large ON-current as the conventional TFTs with same dimension. The leakage current of the double gate TFT is lower than that of the conventional TFT because the channel is fully depleted at OFF-state.
View full abstract
-
SuHua Yang, Meiso Yokoyama
Article type: Article
Pages
177-181
Published: February 14, 1997
Released on J-STAGE: June 23, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
ZnGa_2O_4 phosphor obtained from the first fired process is low luminance intensity and low efficiency. By the treatment of secondary fired process, the maximum luminance intensity and efficiency of ZnGa_2O_4 phosphor obtained by the second fired treatment process are 2050 cd/m^2 and 0.198 lm/W, respectively. The CIE chromaticity coordinate of ZnGa_2O_4 phosphor is at X=0.1696,Y=0.1608. The emission color of ZnGa_2O_4 phosphor is blue.
View full abstract
-
ChongMin Chang, KunWei Lin, KuangVu Chen, HanPingD. Shieh
Article type: Article
Pages
183-187
Published: February 14, 1997
Released on J-STAGE: June 23, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
A high efficient illumination optical system is designed to generate an uniform and rectangular light source for liquid crystal light valve projectors. A short arc and an optimized reflector design enable the total system to be highly efficient while a rectangular-pillar-like glass rod is used to transform a circular beam into a uniform and rectangular cross-section one. The optical system from the light source through the projection lens have been optimized to achieve optical efficiencies of 57% and uniformity of 70%.
View full abstract
-
SamuelA. Musa
Article type: Article
Pages
189-
Published: February 14, 1997
Released on J-STAGE: June 23, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
An overview of the major initiatives in display technology and manufacturing in the United States is presented with emphasis on the markets, government, industry, and university consortia. Special emphasis will be given to the Center for Display Technology and Manufacturing at the University of Michigan. The Center programs are focused in advanced process control, microelectronics on low temperature substrates, factory optimization and control and flat panel display materials, devices and circuits. Recent advances in high mobility TFTs using high deposition rate materials as well as real time sensing and control of reactive ion etching of amorphous silicon, poly silicon and silicon nitride will be presented.
View full abstract
-
Shouqian Ding, Guangyun Zhu, Zhigang Tang, Jinyue Chen, Xia Sheng
Article type: Article
Pages
191-195
Published: February 14, 1997
Released on J-STAGE: June 23, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
In this paper, we calculate the field parameters of an infinitely long saddle coil with elliptical cross section and a definitely long parallel saddle coil. Then, we offer a new method measuring the magnetic field distribution espesially for this kind of DY with elliptical cross section.
View full abstract
-
JongHyun Choi, ChangSoo Kim, SungKi Kim, Jin Jang
Article type: Article
Pages
197-200
Published: February 14, 1997
Released on J-STAGE: June 23, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
We have studied the effect of Ci incorporation on the performance of amorphous silicon thin film transistors (a-Si : H ( : Cl) TFTs). The off-state leakage currents of a-Si : H ( : Cl) TFTs under light illuminations are much lower than those of a-Si : H TFT, caused by the fact that the photoconductivity of a-Si : H ( : Cl) are much lower than those of conventional a-Si : H. The a-Si : H ( : Cl) films deposited between [SiH_2Cl_2]/[SiH_4]=0.04 and [SiH_2Cl_2]/[SiH_4]=0.12 show a p-type conduction, leading to much lower photoconductivity. The TFT using a-Si : H ( : Cl) deposited with [SiH_2Cl_2]/[SiH_4]=0.04 exhibited a field effect mobility of 0.41 cm^2/Vs and a threshold voltage of 5.56 V, but the off-state leakage current under light illumination is 2 orders of magnitude smaller than that of conventional a-Si : H TFT.
View full abstract
-
Yulin Li, Zhisheng Yun, Zhengquan He, Jifang Liu, Genxiang Zheng
Article type: Article
Pages
201-205
Published: February 14, 1997
Released on J-STAGE: June 23, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
The trend of research and development of liquid crystal light valve color projection system is presented, firstly. Then, the two types of projection systems developed in our laboratory are given. One of the systems is based on a high-brightness, high-resolution, electrically addressed, reflectively reading CRT-LCLV spatial light modulators (SLMs). The other employs three transmitting-readout si-TFT-LCLVs. The design features of the two types of the projection systems are demonstrated and the performance of the systems are given.
View full abstract
-
Shigeru Okabayashi, Toyohiko Hatada, Noboru Sugie
Article type: Article
Pages
207-211
Published: February 14, 1997
Released on J-STAGE: June 23, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
Generally a smaller angle of depression of the HUD could enhance perception of displayed image. However, it can not practically be applicable to automotive use. First this paper discusses the relation between perception of displayed image and angle of depression in automotive Head-Up Displays (HUDs). Second, we can point out a new serious problem, misconception of displayed information, if the angle is very small in practical HUDs. Lastly we describe what this stems from focusing on driver's eye movements through psycho physical experiments.
View full abstract
-
Article type: Appendix
Pages
App1-
Published: February 14, 1997
Released on J-STAGE: June 23, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
