Frame buffer pixel circuit for liquid crystal display

Details Frame buffer pixel circuit for liquid crystal display Frame buffer pixel circuit for liquid crystal display

2005-06-28

2005-06-28

Chow, Dennis-Doon (Department: 2675)

Computer graphics processing and selective visual display system

Plural physical display element control system

Display elements arranged in matrix

C345S092000, C349S042000

Reexamination Certificate

active

06911964

ABSTRACT:
An enhanced frame buffer pixel circuit with two control transistors and a separate capacitor put in as a memory capacitor before the memory transistor yields a high contrast ratio by removing induced charge and solving a charge sharing problem between the memory capacitor and the liquid crystal display (LCD) capacitor. The memory transistor may be made of either CMOS or PMOS. The frame buffer pixel can be used to drive binary displays which expresses ON and OFF only if a comparator is put in after the pixel electrode circuit to represent gray levels with reduced sub-frame frequency.

REFERENCES:
patent: 5627557 (1997-05-01), Yamaguchi et al.
patent: 5856812 (1999-01-01), Hush et al.
patent: 5959598 (1999-09-01), McKnight
patent: 5977940 (1999-11-01), Akiyama et al.
patent: 6046716 (2000-04-01), McKnight
patent: 6064362 (2000-05-01), Brownlow et al.
patent: 6329974 (2001-12-01), Walker et al.
patent: 6421037 (2002-07-01), Chen
patent: 6440811 (2002-08-01), Coolbaugh et al.
patent: 6476786 (2002-11-01), Miyachi
patent: 6525709 (2003-02-01), O'Callaghan
patent: 6542142 (2003-04-01), Yumoto et al.
patent: 2001/0024186 (2001-09-01), Kane et al.
patent: 2003/0085862 (2003-05-01), Tsutsui

Affiliated with

Also associated with

Rating

Frame buffer pixel circuit for liquid crystal display does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Frame buffer pixel circuit for liquid crystal display, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Frame buffer pixel circuit for liquid crystal display will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3500468