LIQUID CRYSTAL DISPLAY ELEMENT AND A METHOD OF PRODUCING THE SAME

Title:

LIQUID CRYSTAL DISPLAY ELEMENT AND A METHOD OF PRODUCING THE SAME

Document Type and Number:

WIPO Patent Application WO/1985/004732

Kind Code:

A1

Abstract:

A liquid crystal display element comprises a first clear substrate (11) and a second clear substrate (12) that are opposite each other and are close to each other, wherein a liquid crystal (14) is contained between the clear substrates (11) and (12), a plurality of display electrodes (15) and thin-film transistors (16) connected thereto are formed on the inner surface of the first clear substrate (11), a common clear electrode (17) is formed on the inner surface of the second clear substrate (12), and wherein the thin-film transistors (16) are selectively controlled to selectively display the display electrodes (15). With the above liquid crystal display element, the semiconductor layer (21) of thin-film transistor (16) loses its resistance when light strikes it so that the contrast of the display is adversely affected. According to the present invention, an opaque metal layer (29) is formed between the thin-film transistors (16) and the first clear substrate (11), and an insulating layer (32) is interposed between the opaque metal layer (29) and the thin-film transistor (16). Further, a source bus (31) is formed on the first clear substrate (11) so as to be connected to the opaque metal layer (29), the source bus (31) being composed of the same material as the opaque metal layer (29).

Inventors:

AOKI SHIGEO (JP)
UGAI YASUHIRO (JP)
MIYAKE KATSUMI (JP)
OKAMOTO KOTARO (JP)

Application Number:

PCT/JP1985/000185

Publication Date:

October 24, 1985

Filing Date:

April 10, 1985

Export Citation:

Click for automatic bibliography generation Help

Assignee:

HOSIDEN ELECTRONICS CO (JP)

International Classes:

G02F1/1343; G02F1/136; G02F1/1362; G02F1/133; G02F1/1368; G09F9/30; G09F9/35; G02F1/1335; (IPC1-7): G02F1/133; G09F9/35; H01L27/12; H01L29/78

Foreign References:

JPS56107287A	1981-08-26
JPS5665176A	1981-06-02
JPS5750384A	1982-03-24
JPS5627114A	1981-03-16
JPS5630169A	1981-03-26
JPS5625714A	1981-03-12

Other References: