COLOR FILTER - Toppan Printing Co., Ltd.

Title:

COLOR FILTER

Document Type and Number:

Japanese Patent JP3278929

Kind Code:

B2

Abstract:

PURPOSE: To prevent the contamination of a liquid crystal layer and to provide the color filter having high image quality and long life by electrically shielding sources for elution of impurity ions to prevent the elution of the impurity ions by the electric fields formed with the DC components of the voltage to be applied.
CONSTITUTION: The color filter is formed by previously partly chipping off a photoconductor layer 3 in the part at the end where picture elements 4 are not formed to put this part into the exposed state of the conductor layer 2 so that the conducting state of the conductor layer 2 and a common electrode 5 is assured. Namely, the transparent conductor layer 2 is formed on at least one surface on the transparent base of the color filter and the transparent conductor layer 2 on the transparent base 1 and the common electrodes 5 on the picture elements are brought into contact with each other to assure the electrically conducting state to form the structure enclosing the picture elements 4, etc., which are the sources for elution of the impurity ions completely or mostly by the conductors. The electrical shielding is thus applied at the time of application of the driving voltage, thereby, the image display safe over a long period of time is assured.

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Inventors:

Tenjuro Masui
Eisaburo Watanabe
Atsushi Sasaki

Application Number:

JP27409892A

Publication Date:

April 30, 2002

Filing Date:

October 13, 1992

Export Citation:

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Assignee:

Toppan Printing Co., Ltd.

International Classes:

G02B5/20; G02F1/1335; G02F1/136; G02F1/1368; G03G15/01; (IPC1-7): G02B5/20; G02F1/1335; G02F1/1368; G03G15/01

Domestic Patent References:

JP481804A
JP63273834A
JP6279421A

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