ITE Technical Report
Online ISSN : 2424-1970
Print ISSN : 1342-6893
ISSN-L : 1342-6893
23.21
Session ID : IDY99-109
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Image-Sticking Effect in AM-LCDs Caused by Ionic Impurities
Nobuyoshi Sasaki
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CONFERENCE PROCEEDINGS FREE ACCESS

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Abstract

The transients of the transmittance and the voltage holding ratio(VHR) of a liquid crystal cell were measured by the bipolar pulse driving in order to clarify the influence of residual DC voltage to image-sticking effects. The pulse voltage with the condition of half-tone image driving was applied to the LC cell involving ions after the DC voltage application to induce the residual DC voltage. The resultant transmittance of the cell was lower than that of the unstressed level with increasing VHR as a function of DC application time. The drop of the transmittance is considered to be not caused by residual DC but the increase of the VHR due to decrease of mobile ion density.

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© 1999 The Institute of Image Information and Television Engineers
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