US 12,125,427 B1
Method for adjusting ambient contrast ratio and electronic apparatus
Min Chun Huang, Hsinchu (TW); YuTang Tsai, Hsinchu (TW); Yen Wen Fang, Hsinchu (TW); and Kun-Cheng Tien, Hsinchu (TW)
Assigned to AUO Corporation, Hsinchu (TW)
Filed by AUO Corporation, Hsinchu (TW)
Filed on Dec. 21, 2023, as Appl. No. 18/393,593.
Claims priority of application No. 112137070 (TW), filed on Sep. 27, 2023.
Int. Cl. G09G 3/20 (2006.01)
CPC G09G 3/2007 (2013.01) [G09G 2320/066 (2013.01); G09G 2360/144 (2013.01); G09G 2360/16 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A method for adjusting ambient contrast ratio for a transparent display, the method comprises:
providing a transmittance adjustment plate at a back of the transparent display;
calculating an adjustment transmittance for adjusting the transmittance adjustment plate and a luminance percentage for adjusting the transparent display by using a processor, which comprises:
deciding a plurality of candidate results based on an ambient illuminance, an original transmittance of the transparent display, and an adjustable transmittance range of the transmittance adjustment plate, wherein each of the candidate results comprises a candidate luminance value and a total transmittance;
selecting a final result from the candidate results based on a preset ambient contrast ratio; and
calculating the luminance percentage based on the candidate luminance value of the final result, and calculating the adjustment transmittance based on the total transmittance of the final result;
generating a grayscale layer through the processor based on the luminance percentage;
controlling a transmittance of the transmittance adjustment plate through a voltage generator to the adjustment transmittance; and
in response to the transmittance of the transmittance adjustment plate being the adjustment transmittance, while a frame is displayed on the transparent display, displaying the grayscale layer above the frame through a graphic controller.