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:
Apr. 30, 2019
Filed:
Jan. 16, 2017
Shenzhen China Star Optoelectronics Technology Co., Ltd., Shenzhen, Guangdong, CN;
Longqiang Shi, Guangdong, CN;
Shu-Jhih Chen, Guangdong, CN;
Shenzhen China Star Optoelectronics Technology Co., Ltd, Shenzhen, Guangdong, CN;
Abstract
The present application discloses a pull down maintaining circuit, comprising: a first switch transistor, an input terminal is connected to a first direct current power source, and an output terminal outputting a scanning signal of the Nth level scanning line; a second switch transistor, an input terminal is connected to the first direct current power source, and an output terminal outputting a scanning electric level signal of the Nth level scanning line; a control unit for controlling the first and the second switch transistors to turn off in accordance with a low voltage outputted from the first and the second direct current power source, and the third direct current power source, and to control the first and the second switch transistors to normally turn on in accordance with a high voltage is outputted from the first and the second direct current power source, and the third direct current power source.