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:
Aug. 11, 2015
Filed:
Nov. 12, 2014
Shui-mu Lin, Taichung, TW;
Chien-hua Lin, Changhua, TW;
Ching-yu Chen, Hsinchu, TW;
Chin-hui Wang, New Taipei, TW;
Yung-chun Chuang, Taipei, TW;
Ti-ti Liu, Taipei, TW;
Shui-Mu Lin, Taichung, TW;
Chien-Hua Lin, Changhua, TW;
Ching-Yu Chen, Hsinchu, TW;
Chin-Hui Wang, New Taipei, TW;
Yung-Chun Chuang, Taipei, TW;
Ti-Ti Liu, Taipei, TW;
RICHTEK TECHNOLOGY CORPORATION, Zhubei, Hsinchu, TW;
Abstract
The present invention discloses a light emitting device array billboard and a control method thereof. The light emitting device array billboard includes a light emitting device array circuit, plural line switch circuits, plural channel switch circuits, plural ghost image compensation switch circuits, and a control circuit. The control circuit operates the line switch circuits and the channel switch circuit to turn ON a selected light emitting device for a duty period in a lighting period, and operates the plural ghost image compensation switch circuits to electrically connect a channel node corresponding to the selected light emitting device to a ghost image compensation voltage after the lighting period. The control circuit further adjusts a channel operation signal according to a gray scale compensation signal, to turn ON the selected light emitting device for a gray scale compensation period in addition to the duty period.