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. 06, 2021
Filed:
Sep. 20, 2018
Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd., Shenzhen, CN;
Xianming Zhang, Shenzhen, CN;
Abstract
A voltage generation circuit is disclosed. The circuit includes: a buck circuit and a charge pump circuit; the buck circuit includes a second switching transistor, a second diode for freewheeling and a second inductor for storing energy, wherein a first end of the second switching transistor is connected to an input voltage, a second end is connected to a cathode of the second diode, a control end is connected with a control signal; an anode of the second diode is connected to a ground; a first end of the second inductor is connected to the cathode of the second diode, a second end is connected to a digital voltage output terminal; the cathode of the second diode is connected to the charge pump circuit, voltage on the cathode of the second diode is outputted as an auxiliary voltage for generating a reference voltage after boosted by the charge pump circuit.