Title:
VOLTAGE CONTROL CIRCUIT AND METHOD, GATE DRIVE CIRCUIT AND DISPLAY APPARATUS
Document Type and Number:
WIPO Patent Application WO/2017/118156
Kind Code:
A1
Abstract:
A voltage control circuit and method, a gate drive circuit and a display apparatus. The voltage control circuit comprises a gate-to-source voltage control unit (21), which is connected to a gate of an output transistor (MO) and a pull-up node (PU), and is used during an output cut-off maintaining time period in each display cycle; when the level of the pull-up node (PU) is a low level, the gate level of the output transistor (MO) is controlled so as to control the gate-to-source voltage of the output transistor (MO) being less than a pre-determined gate-to-source voltage; a pre-determined gate-to-source voltage is less than or equal to zero; all the transistors included in the gate-to-source voltage control unit (21) are n-type transistors; and in each display cycle, the output cut-off maintaining time period is set following an output time period. The voltage control circuit can solve the problem of high-temperature abnormal display caused by a rather large reverse cut-off gate-to-source voltage, thereby improving the degree of process compatibility.
Inventors:
WANG JUNWEI (CN)
Application Number:
PCT/CN2016/102861
Publication Date:
July 13, 2017
Filing Date:
October 21, 2016
Export Citation:
Assignee:
BOE TECHNOLOGY GROUP CO LTD (CN)
BEIJING BOE DISPLAY TECH CO (CN)
BEIJING BOE DISPLAY TECH CO (CN)
International Classes:
G09G3/20
Foreign References:
| CN103258495A | 2013-08-21 | |||
| CN105427793A | 2016-03-23 | |||
| CN102651186A | 2012-08-29 | |||
| CN103578446A | 2014-02-12 | |||
| KR101451090B1 | 2014-10-15 | |||
| TWI398845B | 2013-06-11 |
Attorney, Agent or Firm:
LIU, SHEN & ASSOCIATES (CN)
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