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41.2: The Use of Fluorinated Alignment Layers to Reduce Image Retention in Liquid Crystal Displays
Author(s) -
Lu Lu,
Huang Yi,
Zhang Ke,
Twieg Robert,
Bos Philip,
Auman Brian,
Bhowmik Achintya
Publication year - 2010
Publication title -
sid symposium digest of technical papers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.351
H-Index - 44
eISSN - 2168-0159
pISSN - 0097-966X
DOI - 10.1889/1.3500534
Subject(s) - polyimide , dielectric , materials science , planar , rubbing , absorption (acoustics) , layer (electronics) , ion , liquid crystal , optoelectronics , residual , composite material , chemistry , organic chemistry , computer science , computer graphics (images) , algorithm
We find the residual DC value in vertical alignment (VA) cells and planar cells can be reduced with polyimides with low dielectric constant. The RDC value is induced by the ion absorption on the alignment layers. This process is significantly affected by the dielectric properties of the polyimide layer. The low dielectric constant property of polyimides can reduce the ion absorption in the alignment layers, which further reduces the RDC value in both planar cells and VA cells. Additionally, the rubbing effect of the polyimide is also needed to be considered for planar cells.