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:
Jul. 07, 2015
Filed:
Nov. 03, 2014
Japan Display Inc., Tokyo, JP;
Hiroyuki Horibata, Gifu, JP;
Japan Display Inc., Tokyo, JP;
Abstract
Reduction in efficiency of a power supply circuit in a display device is prevented. A positive power supply generation circuit and a negative power supply generation circuit are placed close to a terminal portion to which a drive clock and a power supply electric potential are applied externally. The terminal portionis formed in an edge portion of the TFT glass substrate. That is, the positive power supply generation circuitand the negative power supply generation circuitare placed closer to the terminal portionthan primary circuits of the liquid crystal display device, which are the pixel portion, the horizontal drive circuitand the vertical drive circuit. With this, there is obtained a layout that minimizes wiring loads (resistive and capacitive loads associated with wirings to provide the power supply and the drive clock) to prevent reduction in circuit efficiency.