Gradation display reference voltage generating circuit and...

Details Gradation display reference voltage generating circuit and... Gradation display reference voltage generating circuit and...

2006-06-06

2010-02-09

Lefkowitz, Sumati (Department: 2629)

Computer graphics processing and selective visual display system

Plural physical display element control system

Display elements arranged in matrix

C345S690000, C345S212000

Reexamination Certificate

active

07659875

ABSTRACT:
In a gradation display reference voltage generating circuit, first reference voltages (VH0to VH63) produced by resistors for positive polarity (RH0to RH64) of a first ladder circuit in a first reference voltage producing section (LDH) are output from reference voltage output terminals (T0to T63), respectively, at the positive polarity drive, while second reference voltages (VL0to VL63) produced by resistors for negative polarity (RL0to RL64) of a second ladder circuit in a second reference voltage producing section (LDL) are output from the reference voltage outputs (T0to T63), respectively, at the negative polarity drive. A resistance ratio of the resistors for positive polarity (RH0to RH64) is different from a resistance ratio of the resistors for negative polarity (RL0to RL64).

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