Title:
LIGHT SENSOR CIRCUIT, LIGHT SENSOR DEVICE, AND DISPLAY DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/181558
Kind Code:
A1
Abstract:
The present disclosure addresses the problem of providing a light sensor circuit using an oxide semiconductor transistor that enables stable operation. This light sensor circuit includes a light-receiving transistor, a first switching transistor, a second switching transistor, and a capacitive element. The light-receiving transistor includes a gate connected to first wiring, a source connected to second wiring, and a drain. The first switching transistor has a gate connected to third wiring, a source connected to fourth wiring, and a drain connected to the drain of the light-receiving transistor. The capacitive element includes a first terminal connected to the drain of the light-receiving transistor, and a second terminal connected to the source of the first switching transistor. The second switching transistor includes a gate connected to a gate line, a source connected to a signal line, and a drain connected to the first terminal of the capacitive element. The light-receiving transistor, the first switching transistor, and the second switching transistor each include an oxide semiconductor layer as a channel layer.
Inventors:
TSUBUKU MASASHI (JP)
TSUNASHIMA TAKANORI (JP)
SHIOKAWA MARINA (JP)
TSUNASHIMA TAKANORI (JP)
SHIOKAWA MARINA (JP)
Application Number:
PCT/JP2019/009306
Publication Date:
September 26, 2019
Filing Date:
March 08, 2019
Export Citation:
Assignee:
JAPAN DISPLAY INC (JP)
International Classes:
H01L31/10; G06F3/042; H01L27/146; H01L29/786
Domestic Patent References:
| WO2015111118A1 | 2015-07-30 |
Foreign References:
| JP2015216369A | 2015-12-03 | |||
| JP2012256819A | 2012-12-27 | |||
| US20120138919A1 | 2012-06-07 | |||
| US20160291714A1 | 2016-10-06 |
Attorney, Agent or Firm:
POLAIRE I.P.C. (JP)
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