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. 28, 2009
Filed:
Nov. 23, 2005
Masato Furuya, Yokosuka, JP;
Masato Furuya, Yokosuka, JP;
Victor Company of Japan, Ltd., Kanagawa-Ken, JP;
Abstract
A liquid crystal display apparatus has a transparent substrate having a transparent common electrode formed thereon; an active matrix substrate having pixels with reflective pixel electrodes, the pixels being formed in column and row directions on the matrix substrate in a matrix fashion, each pixel having a switching transistor with a gate, a drain and a source, and a signal-charging capacitor; a liquid crystal layer provided between the common electrode and the pixel electrode; a column-signal electrode driver and a row-scanning electrode driver for activating the matrix substrate; column-signal electrodes connected to the column-signal electrode driver, the gate being connected to each column-signal electrode; and row-scanning electrodes connected to the row-scanning electrode driver, the drain being connected to each row-scanning electrode, each pixel electrode being provided at an intersection of each column-signal electrode and each row-scanning electrode, each pixel electrode and the capacitor being connected to the source. The matrix substrate has a first, a second, a third, and a fourth metal layer formed in order, via interlayer insulating layers between adjacent layers, on a wiring layer having the gate formed therein. The column-signal and row-scanning electrodes are formed in the first and second metal layers, respectively. Or, the column-signal electrodes and the row-scanning electrodes are formed in the second and the first layer, respectively. Wirings for carrying signals to be displayed are connected to the column-signal electrode driver, each wiring having a first wiring portion and a second wiring portion formed in the second and third metal layers, respectively, the first and second portions being electrically connected to each other through a via hole between the second and third metal layers.