Bong-im Park

60.1: Response Time Compensation for Black Frame Insertion

Black frame insertion has been widely adopted for better motion quality in LCDs. In order to maximize the blur reduction effect, fast temporal response is also critical. In this paper, the special behavior of LC molecules in a black insertion environment has been analyzed, and we propose an effective means to implement Response Time Compensation (RTC) with black insertion.

P-37: An Optimized Boost Table Measurement Method for Response Time Acceleration in LCD

A new measurement scheme is proposed to generate an optimized boost table for video rate LCD response time compensation. This method, which closely follows basic theory, enables up to a 90% reduction in the lookup table creation time compared to conventional methods. Furthermore, while conventional approaches require all measurements to be repeated in order to load the entire LUT whenever key parameters such as refresh rate or boost intensity are modified, the method proposed in this paper allows the new table to be calculated by utilizing saved waveform data without the need for any repeated measurements.

Analysis of response‐time compensation for black‐frame insertion

— An impulsive driving technique has been widely adopted for the elimination of motion blur in LCDs. Although the problem of slow temporal response time is very well known for LCDs, the inherent motion blur of moving objects in hold-type displays has a more-serious impact on display performance. It is well known that even very fast LCDs with zero response time still suffer from the motion-blur artifact due to hold-type driving effects. However, a fast temporal response is also critical in order to maximize the blur-reduction effect even in the case of impulsive driving. In this paper, the special behavior of LC molecules in an impulsive driving environment has been analyzed especially for the case of black-frame insertion, and we propose an effective means to implement optimized response-time compensation (RTC) for the black-frame insertion technique.

16.3: Enhanced Oblique Viewing Angle Color Performance for S‐PVA Panels

Viewing angle performance of LCDs is a key issue which has been approached by both subjective and statistical means. In this paper, we discuss causes of image quality degradation as a function of grayscale at a fixed off-axis viewing angle, examining both luminance and chromaticity distortions. Oblique viewing angle performance of both 1G-2D and 2G-1D S-PVA panel structures have been enhanced by controlling the two independent sub-pixel data for each of red, green and blue.