Title:
LIQUID CRYSTAL DISPLAY DEVICE
Document Type and Number:
Japanese Patent JP2018159952
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a display device including a protection circuit having a thin film transistor which has a small size and high withstand voltage.SOLUTION: In the protection circuit of the display device, a thin film transistor is used in which an amorphous semiconductor layer, a microcrystalline semiconductor layer, a gate insulating layer which is in contact with the microcrystalline semiconductor layer, and a gate electrode layer overlap with each other. Since current drive capability of the microcrystal semiconductor layer is high, the size of the transistor can be made small. In addition, the amorphous semiconductor layer is included, so that withstand voltage can be improved. Here, the display device is a crystal display device or light-emitting device.SELECTED DRAWING: Figure 1
Inventors:
KUROKAWA YOSHIMOTO
IKEDA TAKAYUKI
IKEDA TAKAYUKI
Application Number:
JP2018119039A
Publication Date:
October 11, 2018
Filing Date:
June 22, 2018
Export Citation:
Assignee:
SEMICONDUCTOR ENERGY LAB CO LTD
International Classes:
G02F1/1368; G02F1/1345; G09F9/30; H01L21/336; H01L21/822; H01L27/04; H01L29/786; H01L51/50; H05B33/14
Domestic Patent References:
| JP2005134889A | 2005-05-26 | |||
| JP2004078157A | 2004-03-11 |
Foreign References:
| US20060049403A1 | 2006-03-09 | |||
| WO2007074556A1 | 2007-07-05 |