US 12,136,402 B2
Image processing device, image display device, and image processing method
Tomoyuki Nara, Sakai (JP); Naoko Goto, Sakai (JP); and Tatsunori Nakamura, Sakai (JP)
Assigned to SHARP KABUSHIKI KAISHA, Sakai (JP)
Filed by SHARP KABUSHIKI KAISHA, Sakai (JP)
Filed on Sep. 5, 2023, as Appl. No. 18/242,141.
Claims priority of application No. 2022-147489 (JP), filed on Sep. 16, 2022.
Prior Publication US 2024/0096296 A1, Mar. 21, 2024
Int. Cl. G09G 3/36 (2006.01); G02F 1/1333 (2006.01); G02F 1/13357 (2006.01)
CPC G09G 3/3644 (2013.01) [G02F 1/133606 (2013.01); G02F 1/13336 (2013.01); G02F 1/133617 (2013.01); G09G 2300/023 (2013.01); G09G 2300/0465 (2013.01); G09G 2320/066 (2013.01)] 11 Claims
OG exemplary drawing
 
1. An image processing device comprising:
a memory in which an image processing program is stored in advance or to which the image processing program is supplied via a communication network; and
a processor executing the image processing program,
wherein
the memory stores area classification information that is information obtained by classifying a display area for an image on a second liquid crystal panel into a plurality of areas including an overlapping area overlapping a plurality of first pixels for one pixel of a plurality of second pixels, the second liquid crystal panel being disposed facing a first liquid crystal panel directly or across an optical member, the first liquid crystal panel including the plurality of first pixels and facing a backlight, and
the processor
generates a luminance image representing a luminance value corresponding to each of the plurality of second pixels of the second liquid crystal panel based on an input image,
sets a maximum luminance value that is the highest value among luminance values included in a corresponding area of the luminance image in association with each of the plurality of areas,
sets an order of each of the plurality of areas in a descending order of the maximum luminance values,
sets a transmittance of a pixel of interest based on one of the maximum luminance values associated with the overlapping area overlapping the pixel of interest in the order set for the overlapping area overlapping the pixel of interest among the plurality of areas when a first pixel, for which the transmittance is to be set among the plurality of first pixels of the first liquid crystal panel, is set as the pixel of interest, and
sets the transmittance of the pixel of interest among the plurality of first pixels overlapping the overlapping area based on a transmittance coefficient indicating a prescribed value divided by a number of the plurality of first pixels overlapping the overlapping area.