US 12,125,856 B2
Active matrix substrate and liquid crystal display device
Yoshihito Hara, Kameyama (JP); Tohru Daitoh, Kameyama (JP); Jun Nishimura, Kameyama (JP); Kengo Hara, Kameyama (JP); and Yohei Takeuchi, Kameyama (JP)
Assigned to Sharp Display Technology Corporation, Kameyama (JP)
Filed by Sharp Display Technology Corporation, Kameyama (JP)
Filed on Apr. 27, 2023, as Appl. No. 18/140,593.
Claims priority of application No. 2022-074743 (JP), filed on Apr. 28, 2022.
Prior Publication US 2023/0352493 A1, Nov. 2, 2023
Int. Cl. H01L 27/12 (2006.01); G02F 1/1333 (2006.01); G02F 1/1335 (2006.01); G02F 1/1337 (2006.01); G02F 1/1343 (2006.01); G02F 1/1362 (2006.01); G02F 1/1368 (2006.01); G06F 3/041 (2006.01); G06F 3/044 (2006.01)
CPC H01L 27/1248 (2013.01) [G02F 1/13338 (2013.01); G02F 1/133512 (2013.01); G02F 1/1337 (2013.01); G02F 1/134372 (2021.01); G02F 1/136204 (2013.01); G02F 1/136227 (2013.01); G02F 1/136286 (2013.01); G02F 1/1368 (2013.01); G06F 3/0412 (2013.01); G06F 3/04164 (2019.05); G06F 3/0446 (2019.05)] 8 Claims
OG exemplary drawing
 
1. An active matrix substrate comprising;
a substrate;
a plurality of thin film transistors supported by the substrate, each of the plurality of thin film transistors including an oxide semiconductor layer;
an interlayer insulating layer covering the plurality of thin film transistors;
a plurality of pixel electrodes provided above the interlayer insulating layer, each of the plurality of pixel electrodes being electrically connected to a corresponding one of the plurality of thin film transistors;
a common electrode provided between the plurality of pixel electrodes and the interlayer insulating layer;
a first dielectric layer provided between the common electrode and the plurality of pixel electrodes; and
an alignment film covering the plurality of pixel electrodes, wherein:
the first dielectric layer includes a plurality of openings,
each of the plurality of openings exposes a part of the common electrode,
each of the plurality of openings includes the alignment film positioned in each opening, and
each of the plurality of openings further includes a portion overlapping the common electrode and a portion not overlapping the common electrode when viewed from a direction normal to the substrate.