The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 09, 2014
Filed:
Oct. 20, 2011
Jun Fujiyoshi, Mobara, JP;
Yasukazu Kimura, Chiba, JP;
Hideo Tanabe, Mobara, JP;
Masataka Okamoto, Chonan, JP;
Hidekazu Miyake, Mobara, JP;
Jun Fujiyoshi, Mobara, JP;
Yasukazu Kimura, Chiba, JP;
Hideo Tanabe, Mobara, JP;
Masataka Okamoto, Chonan, JP;
Hidekazu Miyake, Mobara, JP;
Japan Display Inc., Tokyo, JP;
Panasonic Liquid Crystal Display Co., Ltd., Hyogo-Ken, JP;
Abstract
A liquid crystal display device includes a first substrate and a second substrate with a liquid crystal layer therebetween. The first substrate includes drain lines, gate lines, thin-film transistors that output signals to pixel electrodes, and an organic film that is formed between each thin-film transistor and each pixel electrode. The organic film has a contact hole for electrical connection between a source electrode of each thin-film transistor and each pixel electrode. A step is formed in a layer underlying the organic film and an edge portion of the organic film toward the thin-film transistor, the edge portion forming the contact hole, being formed to lie on a lower plane of the step. A sidewall part of the contact hole which is formed in the organic film is formed to have a taper angle of at least 60 degrees.