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:
May. 16, 2017
Filed:
Sep. 30, 2015
Applicant:
Synaptics Incorporated, San Jose, CA (US);
Inventors:
Assignee:
Synaptics Incorporated, San Jose, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G09G 5/00 (2006.01); H03M 1/68 (2006.01); H03M 1/00 (2006.01);
U.S. Cl.
CPC ...
G09G 5/003 (2013.01); H03M 1/002 (2013.01); H03M 1/687 (2013.01); G09G 2300/0828 (2013.01); G09G 2310/0286 (2013.01); G09G 2330/028 (2013.01);
Abstract
A source driver for a display, including: a current source that provides an approximately constant current; and multiple channels coupled to multiple source electrodes and including multiple digital to analog converters (DAC), each DAC including: a voltage source that applies a voltage to a source electrode based on the approximately constant current provided by the current source; and a control unit having circuitry that: inputs a digital value; and terminates, based on the digital value, charging of the voltage source by the approximately constant current.