Research of flicker shift and stability on ADS mode LCD

ABSTRACT

Flicker shift and flicker stability on advanced super dimension switch (ADS) mode liquid crystal display has been studied based on a 9-in. ADS mode screen which is oriented by rubbing. Firstly, the dependence of flicker shift on polyimide (PI) material was studied by testing four PI materials, including three PI materials of N company (N1, N2, N3) and one PI material of J company (J1). The results show that flicker value of N1 PI material changes most mildly with the continuous lighting time, that is, the N1 PI material performs best on flicker shift among the four PI materials. Secondly, the dependence of flicker stability on passivation layer (PVX) thickness, PI pre-cure temperature, PI main-cure temperature and post-anneal temperature were studied by conducting a four-factor and two-level 1/2 fractional factorial design of experiment (DOE) test. The results of the DOE test indicate that flicker stability could be improved by the increase of PI main cure temperature and the decrease of post-anneal temperature.

GRAPHICAL ABSTRACT

KEYWORDS:

• LCD
• flicker shift
• flicker stability
• PI material
• PI deposition condition

Disclosure statement

No potential conflict of interest was reported by the authors.