US 11,726,376 B2
Display device, display module, and electronic device
Shunpei Yamazaki, Tokyo (JP); Yukinori Shima, Gunma (JP); Kenichi Okazaki, Tochigi (JP); and Natsuko Takase, Kanagawa (JP)
Assigned to Semiconductor Energy Laboratory Co., Ltd., Atsugi (JP)
Appl. No. 16/461,994
Filed by SEMICONDUCTOR ENERGY LABORATORY CO., LTD., Atsugi (JP)
PCT Filed Nov. 16, 2017, PCT No. PCT/IB2017/057151
§ 371(c)(1), (2) Date May 17, 2019,
PCT Pub. No. WO2018/096425, PCT Pub. Date May 31, 2018.
Claims priority of application No. JP2016-227338 (JP), filed on Nov. 23, 2016; and application No. JP2017-099484 (JP), filed on May 19, 2017.
Prior Publication US 2019/0317374 A1, Oct. 17, 2019
Int. Cl. G02F 1/1368 (2006.01); G02F 1/1343 (2006.01); G02F 1/1362 (2006.01); H01L 27/12 (2006.01); H01L 29/786 (2006.01); G02F 1/1345 (2006.01); G02F 1/1333 (2006.01)
CPC G02F 1/1368 (2013.01) [G02F 1/13439 (2013.01); G02F 1/136277 (2013.01); G02F 1/136286 (2013.01); H01L 27/1225 (2013.01); H01L 27/1251 (2013.01); H01L 29/78648 (2013.01); G02F 1/13338 (2013.01); G02F 1/13454 (2013.01); G02F 1/13685 (2021.01); G02F 1/133388 (2021.01); G02F 1/136295 (2021.01); G02F 2202/103 (2013.01); G02F 2202/104 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A display device comprising:
a display portion; and
a driver circuit portion,
wherein the display portion comprises a liquid crystal element, a first transistor, a scan line, and a signal line,
wherein the driver circuit portion comprises a second transistor,
wherein the liquid crystal element comprises a pixel electrode, a liquid crystal layer, and a common electrode,
wherein each of the scan line and the signal line is electrically connected to the first transistor,
wherein the scan line and the signal line each comprise a metal layer,
wherein a structure of the first transistor is different from a structure of the second transistor,
wherein each of a first semiconductor layer of the first transistor and a second semiconductor layer of the second transistor is provided over and in direct contact with a first insulating layer,
wherein the first semiconductor layer comprises a first metal oxide,
wherein the second semiconductor layer comprises a second metal oxide,
wherein the first transistor comprises a first region directly connected to the pixel electrode,
wherein the second transistor comprises a second insulating layer over the second semiconductor layer and a first upper gate electrode over the second insulating layer,
wherein the first upper gate electrode comprises an oxide conductor comprising an impurity element,
wherein an upper end of a side surface of the second insulating layer and a lower end of a side surface of the first upper gate electrode coincide with each other,
wherein each of the pixel electrode, the common electrode, and the first region comprises a conductive material transmitting visible light, and
wherein visible light passes through the first region and the liquid crystal element and is emitted to an outside of the display device.