US 12,217,716 B1
Cholesterol liquid crystal display and driving method thereof
Heng-Yi Tseng, Hsin-Chu (TW); Yi-Han Tseng, Hsin-Chu (TW); Yi-Jyun Ke, Hsin-Chu (TW); and Kun-Cheng Tien, Hsin-Chu (TW)
Assigned to AUO CORPORATION, Hsin-Chu (TW)
Filed by AUO Corporation, Hsin-Chu (TW)
Filed on Mar. 14, 2024, as Appl. No. 18/604,543.
Claims priority of application No. 113100762 (TW), filed on Jan. 8, 2024.
Int. Cl. G09G 3/36 (2006.01)
CPC G09G 3/3629 (2013.01) [G09G 2300/0486 (2013.01); G09G 2310/061 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A method for driving a cholesteric liquid crystal display, comprising:
providing a reflective cholesteric liquid crystal panel comprising a pixel array composed of a plurality of pixel units; and
performing a scanning operation on the pixel array, wherein the scanning operation comprises:
applying a continuous fixed pulse to at least one of the plurality of pixel units lasting for a time period, so as to make cholesterol liquid crystal layer of the at least one of the plurality of pixel units having a uniform lying helix (ULH) phase; and
applying a maintaining pulse that is smaller than the continuous fixed pulse to the at least one of the plurality of pixel units.