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:
Feb. 20, 2018
Filed:
Dec. 14, 2016
Leyard Optoelectronic Co., Ltd., Beijing, CN;
Hongliang Wei, Beijing, CN;
LEYARD OPTOELECTRONIC CO., LTD., Beijing, CN;
Abstract
A display circuit and a control method therefor are shown. The display circuit includes: a lamp bead array, a column-oriented drive switch array, a row-oriented drive switch array and a common-anode discharge control circuit, wherein one end of the common-anode discharge control circuit is connected to second ends of lamp beads, in a row direction, in the lamp bead array, and the other end of the common-anode discharge control circuit is grounded; the common-anode discharge control circuit includes a constant current source, a diode and a resistor; a first end of the diode is connected to the second ends of the lamp beads, in the row direction, in the lamp bead array, a second end of the diode is connected to a first end of the constant current source, and the second end of the diode is connected to a first end of the resistor; and a second end of the resistor and a second end of the constant current source are connected to a power supply, and a grounded end of the constant current source is grounded.