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. 03, 2019
Filed:
Oct. 19, 2017
Wuhan China Star Optoelectronics Technology Co., Ltd., Wuhan, Hubei, CN;
Guanghui Hong, Hubei, CN;
Abstract
An array test circuit is provided. The circuit includes: at least one first demultiplexer module, an enable signal input point, a plurality of measurement and control signal input points, a plurality of data lines, a plurality of enabling switches, a plurality of anti-floating switches, and an inverter. A control terminal of each anti-floating switch is electrically connecting to an inverted enable signal, an input terminal is accessed to an OFF signal of the measurement and control switch, an output terminal is electrically connected to a corresponding measurement and control signal input point. The anti-floating switch can be turned on and input the OFF signal to the measurement and control signal input point when the liquid crystal panel is displayed, it can ensure the demultiplexing switches are kept in OFF state, preventing the switches in floating state and improving the working stability of the liquid crystal display panel.