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:
Dec. 06, 2022
Filed:
Mar. 22, 2022
Applicants:
Darwin HU, San Jose, CA (US);
Cheng Hsing Liao, Zhubei, TW;
Inventors:
Darwin Hu, San Jose, CA (US);
Cheng Hsing Liao, Zhubei, TW;
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G09G 3/00 (2006.01); G09G 3/36 (2006.01); H04N 7/01 (2006.01); G03H 1/26 (2006.01);
U.S. Cl.
CPC ...
G09G 3/3696 (2013.01); G03H 1/2645 (2013.01); H04N 7/0117 (2013.01); G03H 2001/2655 (2013.01);
Abstract
Techniques for holographic display by modulating optical images in amplitude and phase via a layer of liquid crystals are described. According to one aspect of the techniques, a voltage being applied or coupled across the layer of liquid crystals is controlled by gradually increasing the voltage from a low level to a high level to perform the AM in a first range and the PM in second range, where the characteristics of the liquid crystals is significant, for example, by increasing the thickness or optical birefringence of the layer of liquid crystals.