Title:
【発明の名称】重複選択スキヤナを備えた被走査型液晶表示装置
Document Type and Number:
Japanese Patent JP3068646
Kind Code:
B2
Abstract:
A liquid crystal device (LCD) display includes a grid of conductive row select lines and column data lines which are used in conjunction with thin-film transistors (TFT's) to address pixel electrodes in the display. The LCD display includes two shift registers for receiving and propagating the select signals for the row select lines, each shift register has a plurality of shift register stages, one connected to each row select line. A plurality of combiner circuits are provided, one for each stage of each of the shift registers. Each combiner circuit is configured to provide an electrical conduction path for the select signal between successive stages in each of the shift registers. When a fault is detected in a stage of one of the shift registers, the combiner circuit coupled to the output of the defective stage reconfigured to route the select signal from the corresponding stage of the other shift register to the next stage of the one shift register. Full select shift register redundancy is provided, even if both shift registers have faulty stages.
Inventors:
Roach, William Ronald
Application Number:
JP50323591A
Publication Date:
July 24, 2000
Filing Date:
December 12, 1990
Export Citation:
Assignee:
Sarnoff Corporation
International Classes:
G02F1/133; G02F1/136; G02F1/1368; G06F11/00; G06F11/16; G09G3/36; (IPC1-7): G02F1/133; G02F1/136; G09G3/36
Domestic Patent References:
| JP6064394A | ||||
| JP1225996A | ||||
| JP60164791A | ||||
| JP1213623A | ||||
| JP3197925A |
Attorney, Agent or Firm:
Yoshiki Hasegawa (5 others)