US 12,396,354 B2
Display device
Hiroshi Tsuchiya, Kameyama (JP); and Takashi Satoh, Kameyama (JP)
Assigned to Sharp Display Technology Corporation, Kameyama (JP)
Filed by Sharp Display Technology Corporation, Kameyama (JP)
Filed on Aug. 5, 2024, as Appl. No. 18/794,409.
Claims priority of application No. 2023-139767 (JP), filed on Aug. 30, 2023.
Prior Publication US 2025/0081800 A1, Mar. 6, 2025
Int. Cl. H10K 59/50 (2023.01); G02F 1/1335 (2006.01); G02F 1/1337 (2006.01); G02F 1/139 (2006.01); H10K 59/131 (2023.01)
CPC H10K 59/50 (2023.02) [G02F 1/133553 (2013.01); G02F 1/133746 (2021.01); G02F 1/133749 (2021.01); G02F 1/133769 (2021.01); G02F 1/1391 (2013.01); G02F 1/1397 (2013.01); H10K 59/131 (2023.02); G02F 2201/123 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A display device comprising:
a first substrate including a switching element;
a liquid crystal layer containing liquid crystal molecules; and
a second substrate including an opposite electrode, the first substrate, the liquid crystal layer and the second substrate are provided sequentially,
the display device further comprising a plurality of pixels arranged in a matrix in a display area, wherein
each of the plurality of pixels includes a reflective liquid crystal portion and a self-luminous element portion,
in the reflective liquid crystal portion, the first substrate includes a reflector, a coating layer, and a pixel electrode, which are provided sequentially toward a side of the liquid crystal layer, but does not include a switching element,
the reflector, the pixel electrode, the liquid crystal layer, and the opposite electrode form a reflective liquid crystal display element that operates in bistable liquid crystal display mode,
in the self-luminous element portion, the first substrate includes:
the switching element;
a self-luminous display element including a first electrode, an organic layer, and a second electrode; and
the coating layer disposed on a side of the liquid crystal layer of the self-luminous display element, and
the coating layer is provided contiguously across the reflective liquid crystal portion and the self-luminous element portion.