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1. (WO2014205977) TOUCH CONTROL DRIVE CIRCUIT, EMBEDDED OPTICAL TOUCH SCREEN, AND DISPLAY APPARATUS

Pub. No.:    WO/2014/205977    International Application No.:    PCT/CN2013/087069
Publication Date: Thu Jan 01 00:59:59 CET 2015 International Filing Date: Thu Nov 14 00:59:59 CET 2013
IPC: G06F 3/042
Applicants: BOE TECHNOLOGY GROUP CO., LTD.
京东方科技集团股份有限公司
CHENGDU BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.
成都京东方光电科技有限公司
Inventors: NIE, Leisen
聂磊森
QI, Xiaojing
祁小敬
WU, Bo
吴博
QING, Haigang
青海刚
Title: TOUCH CONTROL DRIVE CIRCUIT, EMBEDDED OPTICAL TOUCH SCREEN, AND DISPLAY APPARATUS
Abstract:
Disclosed are a touch control drive circuit, an embedded optical touch screen, and a display apparatus. The touch control drive circuit comprises: a drive submodule, a photo-sensitive submodule, and a control submodule. Under the control of a switch signal end and a grid signal end, the photo-sensitive submodule outputs a touch control signal to the drive submodule; under the control of the touch control signal, the drive submodule outputs a touch control-sensitive signal to the control submodule, and the touch control-sensitive signal fades as light shone on the photo-sensitive submodule is strengthened; and when the control signal controls the control submodule to be enabled, the control submodule outputs the touch control-sensitive signal to a touch control signal reading end, to implement a touch control function. Compared with a drive circuit of an existing embedded optical touch screen, the control submodule controls the drive submodule to output the touch control-sensitive signal to the touch control signal reading end, so that when a touch control signal reading end of each drive circuit is connected to a same touch control signal reading line, mutual interference between signals output by different drive circuits can be avoided.