11.5L: Late‐News Paper: A Novel Wide‐Viewing‐Angle Motion‐Picture LCD

Abstract

: A prototype was developed of a novel display that includes a pi‐cell switching device with a special optical compensation system called a complementary pi‐cell structure(CPS) and a special drive method, called cyclic resetting(CR) drive. The pi‐cell is sandwiched between two optical films made of a negative Δn discotic liquid crystal (DLC), which is optically complementary to the pi‐cell. Thus, the CPS provides an extremely wide viewing angle. The CR drive method in which black voltage is applied to a pixel for a fraction of each frame, enables impulsive emission which improves the quality of motion picture display.

The effect of FLCoS‐display hold time on the perceived blur of moving imagery

“…The limited temporal response of LCDs is a consequence of primarily two characteristics: (1) slow onset and offset times and (2) the sample-and-hold property related to both the design of the LCD driver circuitry and the LCD itself (Shima et al, 1995;Yamamoto et al, 2000). Several techniques have been suggested for improving the temporal response of LCDs, including modified LCD driving methods (Nakamura et al, 1998;Nakamura and Sekiya, 2001;Nose et al, 2001;McCartney and Balram, 2004), intermittent illumination (Fisekovic et al, 2001;Kurita, 2001;Pan, 2005), video processing (Bitzakidis, 1995;Klompenhouwer and Velthoven, 2004), and doubling the refresh rate (Kurita, 2001;Lee et al, 2005). The onset and offset times of more recently developed ferroelectric liquid crystal-on-silicon (FLCoS) displays are significantly less than those of conventional LCDs (Underwood, 2000).…”

69.4: Amorphous Silicon Based 40” LCD TV Using Ultra Fast OCB Mode

“…Two types of impulsive driving method have been proposed [5,6]; One is LC impulsive driving method and the other is backlight impulsive driving method. In the backlight impulsive driving method, CCFL or LED backlight system can be used.…”

“…Many techniques including faster LC response, overdrive, black impulsive driving, and blinking backlight have been developed to solve motion blur [5][6][7]. It is known that black impulsive driving technology can give a significant benefit of the clear moving picture quality and the more period of black data offers better motion image.…”

31.1: Invited Paper: Fundamental Phenomena Underlying Artifacts Induced by Image Motion and the Solutions for Decreasing the Artifacts on FPDs

“…An effective way to reduce motion blur is to adopt LC-materials with short response time [25]- [27]. LCDs demonstrated by the researches used very high response LC materials and adopted black level insertion, impulsive backlight and/or capacitively coupling techniques.…”