We have succeeded in the development of a new front surface film, it has the function of improving the viewing-angle properties (especially, improvement of gray scale inversion in downside direction) of TN-mode TFT-LCDs, in addition to the conventional function of the protection of polarizer and the glare prevention under bright room surrounding 1) .The excellent viewing-angle properties have been realized in combing this new front surface film with the optical compensation film for TN-mode (Wide-View Film, for short WV Film). According to the proposal of this method, it has been expected to apply TN-mode to large-size LCD monitors and LCD TVs hereafter.
We have successfully achieved a very high contrast ratio of over 700:1 without attaching optical compensation films. This good contrast ratio is much higher than that for commercially available projection displays whose typical contrast ratios are about 400:1. A novel light-shielding structure has been employed in order to realize the excellent performance that has been brought by suppressing low photo leakage current in the TFTs for the LCLVs.
We studied an image distortion of high-definition LCDs with anti-glare (AG) films using novel ray tracing simulation that we developed. We have succeeded in describing the inner diffusion effect for decreasing glittering using our simulation. We have analyzed and quantitatively evaluated displayed images that pass through AG films.
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