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:
Nov. 05, 2019
Filed:
Dec. 29, 2017
Mitsubishi Electric Corporation, Tokyo, JP;
Mitsubishi Electric Corporation, Tokyo, JP;
Abstract
A liquid crystal display device is equipped with: a TFT array substrate having a thin film transistor in each of pixel areas; and a counter substrate having a black matrix in which an opening part is formed in each of areas corresponding to the pixel areas. The TFT array substrate includes: a protective film formed on a drain electrode of the thin film transistor; a contact hole formed in the protective film so as to reach the drain electrode; and a pixel electrode formed on the protective film and connected to the drain electrode through the contact hole. An inner wall of the contact hole includes a first sloped part and a second sloped part which are arranged in line in a circumferential direction of the contact hole and have slope angles different from each other.