Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix
Patent
1997-09-15
2000-08-08
Liang, Regina
Computer graphics processing and selective visual display system
Plural physical display element control system
Display elements arranged in matrix
345100, 341144, G09G 336
Patent
active
061008680
ABSTRACT:
To reduce the layout area required by LCD column drivers without suffering a significant decrease in performance, a PMOS-based circuit selects a voltage from an upper set of analog display voltages and a NMOS-based circuit selects a voltage from a lower set of analog display voltages. This reduces the layout area by up to roughly a factor of two compared with conventional column drivers which are CMOS-based. Moreover, in a typical dot inversion scheme, where two adjacent columns select voltages from alternating voltage sets, two adjacent columns can share the same PMOS-based and NMOS-based circuits by using multiplexers controlled by a polarity signal to route the digital display data into the sets of switches. This reduces the layout area by up to roughly an additional factor of two.
REFERENCES:
patent: 3699464 (1972-10-01), Zobel
patent: 4511881 (1985-04-01), Adam
patent: 4748444 (1988-05-01), Arai
patent: 4772100 (1988-09-01), Suenaga
patent: 4838654 (1989-06-01), Hamaguchi et al.
patent: 4868459 (1989-09-01), Dennerlein et al.
patent: 5051739 (1991-09-01), Hayashida et al.
patent: 5061920 (1991-10-01), Nelson
patent: 5214608 (1993-05-01), Hsu et al.
patent: 5243333 (1993-09-01), Shiba et al.
patent: 5250931 (1993-10-01), Misawa et al.
patent: 5426447 (1995-06-01), Lee
patent: 5436745 (1995-07-01), Voisin et al.
patent: 5455534 (1995-10-01), Motegi et al.
patent: 5510807 (1996-04-01), Lee et al.
patent: 5526014 (1996-06-01), Shiba et al.
patent: 5546102 (1996-08-01), Scheffer et al.
patent: 5572211 (1996-11-01), Erhart et al.
patent: 5574475 (1996-11-01), Callahan, Jr. et al.
patent: 5604511 (1997-02-01), Ohi
patent: 5623277 (1997-04-01), Lippmann et al.
patent: 5650801 (1997-07-01), Higashi
patent: 5675352 (1997-10-01), Rich et al.
patent: 5693237 (1997-12-01), Bodensohn
patent: 5757351 (1998-05-01), Lin et al.
Fluxman, S. M. "Integrated Active Matrix Liquid Crystal Displays", The GEC Journal of Research; vol. 11, No. 1; pp.2-11,1993.
Okada, H. et al.; "23.1: An 8-bit Digital Data Driver for AMLCDs", SID 94 Digest; 1994; pp. 347-350.
A New Digital Data-Line Circuit For TFT-LCD Driving, May 12, 1996, H. Tsuchi, H. Hayama, NEC Corp., Kanagawa, Japan, SID International Symposium Digest of Technical papers, San Diego, May 12-17, 1996, pp. 251-254.
Jeong Deog-Kyoon
Lee David D.
Liang Regina
Silicon Image Inc.
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