P‐3: Panel Transmittance Analysis of PVA Mode and a Noble Pixel Design

Vertical Alignment mode TFT-LCD is divided into MVA mode through formation of protrusion, PVA mode that uses color filter ITO patterning and etc. Among these, R&D of PVA (Plus Viewing Angle) mode accomplished the practical Wide Viewing Angle through the several technical phases. The multi-domain structure by the effect of fringe-field and the application of biaxial compensation film are the examples. PVA mode has a characteristic of high transmittance compared other Wide Viewing Angle mode. However the recent requirements of diversification of a use and the requirements of improvement of a screen quality make the transmittance diminished by modification the cell parameter and etc. In the experimentation hereunder the structure of Gradual Y-slit has accomplished over 10% of transmittance than the existing chevron pattern by applying this to T-pattern. And the produced 17″SXGA T-pattern panel shows the characteristics of 300 nits of brightness, 65% of color gamut, 600:1 contrast ratio and 25ms response time.