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:
Nov. 10, 2020
Filed:
Jan. 26, 2017
X Display Company Technology Limited, Dublin, IE;
Robert R. Rotzoll, Colorado Springs, CO (US);
Ronald S. Cok, Rochester, NY (US);
X Display Company Technology Limited, Dublin, IE;
Abstract
An active-matrix digital-drive display system includes an array of pixels. Each pixel has an output device, a serial digital memory responsive to a load timing signal for receiving and storing a multi-bit digital pixel value during an uninterrupted load time period, and a drive circuit responsive to a pulse-width-modulation (PWM) timing signal and to the multi-bit digital pixel value to drive the output device during an uninterrupted output time period. A controller external to the array of pixels provides to each pixel the load timing signal and the multi-bit digital pixel value during the load time period and the PWM timing signal during the output time period. The PWM timing signal has multiple different PWM time periods that are sequentially provided at different times to the pixels. Each PWM time period has a different temporal length corresponding to a bit of the multi-bit digital pixel value.