DRIVE CIRCUIT OF LIQUID CRYSTAL DISPLAY

Title:

DRIVE CIRCUIT OF LIQUID CRYSTAL DISPLAY

Document Type and Number:

Japanese Patent JP2004004512

Kind Code:

A

Abstract:

To solve a problem of abnormality in signals in a level shifter caused when a TFT having a relatively slow operation rate is used to integrate a drive circuit in a liquid crystal display.

Abnormality in signals is prevented by setting the size of a transistor in the level shifter 11. The output of the level shifter 11 is inputted into a gate circuit 11 which controls timing, and the subsequent circuits are driven by the output signals of the gate circuit 11. By constituting the above circuits, abnormality in signals caused in the level shifter 11 does not influence the signals in the subsequent circuits of the level shifter 11.

Inventors:

AZUMA SEIICHIRO

Application Number:

JP2002372515A

Publication Date:

January 08, 2004

Filing Date:

December 24, 2002

Export Citation:

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Assignee:

SEIKO EPSON CORP

International Classes:

G02F1/1368; G02F1/133; G09G3/20; G09G3/36; H01L21/8238; H01L27/092; H01L29/786; (IPC1-7): G02F1/133; G02F1/1368; G09G3/20; G09G3/36; H01L21/8238; H01L27/092; H01L29/786

Attorney, Agent or Firm:

Masahiko Ueyanagi
Fujitsuna Hideyoshi
Osamu Suzawa

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