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.

Date of Patent:
Jul. 21, 2026

Filed:

Dec. 16, 2022
Applicant:

Ohio State Innovation Foundation, Columbus, OH (US);

Inventors:

Chongchang Mao, Chapel Hill, NC (US);

Lianhua Ji, Erie, CO (US);

Kristina Johnson, Bexley, OH (US);

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G09G 3/36 (2006.01);
U.S. Cl.
CPC ...
G09G 3/3607 (2013.01); G09G 2300/0426 (2013.01); G09G 2300/0439 (2013.01); G09G 2320/0247 (2013.01); G09G 2360/18 (2013.01);
Abstract

Disclosed herein is a frame buffer pixel circuit having a first data pass gate transistor G, first storage capacitor C, a voltage boosting line Vb, source follower transistor F, pull-down transistor P, and second data pass gate transistor G. The pull-down transistor P is connected to the drain of transistor F and source of transistor Gand the storage capacitor Cis connected to a voltage boosting line Vb. In the operation, Vb is set to zero volt when data is transferring to Cl capacitor through Ggate. After the frame data are loaded onto Ccapacitors in all pixels, Vb is set to designed voltage and Ggates in all pixels are opened to charge Clcd capacitors. Vb is then set to zero volt again before starting to load next frame data onto pixels. Such process is iterated in the liquid crystal on silicon (LCOS) working time.


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