06100868 is referenced by 34 patents and cites 31 patents.

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.

Title
High density column drivers for an active matrix display
Application Number
8/937262
Publication Number
6100868
Application Date
September 15, 1997
Publication Date
August 8, 2000
Inventor
David D Lee
Palo Alto
CA, US
Deog Kyoon Jeong
Sungnam
KR
Agent
Fenwick & West
Assignee
Silicon Image
CA, US
IPC
G90G 3/36
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