Title:
LIQUID CRYSTAL DEVICE
Document Type and Number:
Japanese Patent JP3026896
Kind Code:
B2
Abstract:
PURPOSE: To improve reliability for a liquid crystal device by enabling the terminal of a flexible wiring board to be thermal-pressed to stick on a printed board with a uniform pressing force by always providing a wiring pattern and a silk print pattern at the back side of the terminal part of the printed board.
CONSTITUTION: The flexible wiring board on which a driving circuit consisting of a semiconductor chip for driving is loaded, is connected to the peripheral part of a display device, and also, the flexible wiring board supplies a control signal and a power source to the driving circuit by connecting to the printed board 4. In such a case, the terminal 5 is provided at a surface part, and the wiring pattern 6 and the silk print pattern 8 on the back plane part of the multilayer printed board 4, and it is constituted so as to always keep the thickness of the terminal 5 part constant. Also, the terminal 7 of the flexible wiring board is connected to the terminal 5 of the printed board 4 via soldering 10. Such soldering 10 is performed by thermal-pressing to stick solder adhered on one or both sides of the terminal 7 and the terminal 5 by a heating head.
Inventors:
Masanori Takahashi
Kenji Niibori
Hideo Mori
Kenji Niibori
Hideo Mori
Application Number:
JP35931292A
Publication Date:
March 27, 2000
Filing Date:
December 26, 1992
Export Citation:
Assignee:
Canon Inc
International Classes:
G02F1/1345; H05K3/36; (IPC1-7): G02F1/1345
Attorney, Agent or Firm:
Kazuo Chikajima