Display device

• US 20020171780A1
• Filed: 07/15/2002
• Published: 11/21/2002
• Est. Priority Date: 09/04/1996
• Status: Active Grant

• Current Assignee: Hongyong Zhang, Satoshi Teramoto
• Original Assignee: Hongyong Zhang, Satoshi Teramoto
• Inventors: Teramoto, Satoshi, Zhang, Hongyong
• Granted Patent: US 7,046,313 B2
• Time in Patent Office: Days
• US Class Current: 349/39
• CPC Class Codes: G02F 1/136209 Light shielding layers, e.g. black matrix, incorporated in the active matrix substrate, e.g. structurally associated with the switching element
• CPC Class Codes: G02F 1/136213 Storage capacitors associated with the pixel electrode
• CPC Class Codes: G02F 1/136227 Through-hole connection of the pixel electrode to the active element through an insulation layer

Abstract

The present invention provides an active matrix type display device having a high aperture ratio and a required auxiliary capacitor. A source line and a gate line are overlapped with part of a pixel electrode. This overlapped region functions to be a black matrix. Further, an electrode pattern made of the same material as the pixel electrode is disposed to form the auxiliary capacitor by utilizing the pixel electrode. It allows a required value of auxiliary capacitor to be obtained without dropping the aperture ratio. Also, it allows the electrode pattern to function as a electrically shielding film for suppressing the cross-talk between the source and gate lines and the pixel electrode.

Claims

1. An active matrix type display device, comprising:

an electrode pattern made of a conductive film disposed between source and gate lines and a pixel electrode; and

an auxiliary capacitor formed between said electrode pattern and said pixel electrode.