METHOD AND DEVICE FOR REPAIRING DEFECT OF LIQUID CRYSTAL DISPLAY DEVICE

Japanese Patent JP3969408

B2

PROBLEM TO BE SOLVED: To provide a repairing method for a bright point defect such that a bright point can be made into a black point through a simple process without influencing peripheral pixels and the black point is maintained without being put back into the bright point with time.
SOLUTION: Disclosed is the method for repairing a bright-point defect pixel (B) of a liquid crystal display device equipped with a couple of substrates (20a, 20b), a liquid crystal layer (10) interposed between the couple of substrates, and alignment films (12a, 12b) which is provided between the substrates and liquid crystal layer to control alignment of liquid crystal of the liquid crystal layer. The method includes a process of locally decreasing or eliminating the alignment control force of the alignment films by irradiating a range of the alignment films corresponding to the bright-point defect pixel with laser light and is characterized in that when liquid crystal is displayed, the bright-point defect pixel is repaired by decreasing the intensity of light transmitted through the range where the alignment control force is decreased or eliminated.

Kazushige Umezu

JP2004258613A

September 05, 2007

September 06, 2004

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Seiko Epson Corporation

G02F1/13; B23K26/00; G02F1/1337

JP9146060A
JP10062734A
JP9258155A
JP60243635A
JP2002341304A
JP2003241155A
JP2003107479A
JP9090304A
JP8184830A
JP6130390A
JP11264961A
JP2001021890A

Yoshiyuki Inaba
Katsuro Tanaka
Shinji Oga

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