Optical touch device, display and electronic device

A display comprising an optical touch device, wherein the optical touch device comprises:

• a pixel array that comprises a plurality of pixel sub-circuits each of which comprises M first pixels and N second pixels, wherein the N second pixels are used for emitting detection rays with a preset frequency, where M and N are positive integers;
• a light receiving array that comprises a plurality of light receivers corresponding, on a one-to-one basis, to the plurality of pixel sub-circuits, wherein each of the light receivers generates an sensing signal by receiving reflected rays of the detection rays emitted by a corresponding second pixel;
• a detection circuit connected with the plurality of light receivers, for performing touch positioning according to the sensing signal generated by each of the light receivers;
• a first control signal line connected with the M first pixels, the first control signal line driving the M first pixels by outputting a first drive signal;
• and
• a second control signal line connected with the N second pixels the second control signal line driving the N second pixels to emit the detection rays with the preset frequency by outputting a second drive signal,
• wherein the plurality of light receivers are divided into P groups of light receiving sub-circuits, each group of light receiving sub-circuits comprises at least one of the light receivers, and each group of light receiving sub-circuits comprises a first output end and a second output end, where P is an integer greater than 1,
• wherein the detection circuit comprises P detection sub-circuits, each of which is connected, via a transistor, with a corresponding light receiving sub-circuit in the P groups of light receiving sub-circuits,
• wherein each of the P detection sub-circuits comprises a first input end, a second input end and an output end,
• wherein the first input end of each of the P detection sub-circuits is connected, via the transistor, with the first output end of the corresponding light receiving sub-circuit, and
• wherein the second input end of each of the P detection sub-circuits is connected with the second output end of the corresponding light receiving sub-circuit, and the second input end of each of the P detection sub-circuits is further connected with the second control signal line.

An electronic device comprising a display, the display comprising an optical touch device, wherein the optical touch device comprises:

• a pixel array that comprises a plurality of pixel sub-circuits each of which comprises M first pixels and N second pixels, wherein the N second pixels are used for emitting detection rays with a preset frequency, where M and N are positive integers;
• a light receiving array that comprises a plurality of light receivers corresponding, at a one-to-one basis, to the plurality of pixel sub-circuits, wherein each of the light receivers generates an sensing signal by receiving reflected rays of the detection rays emitted by a corresponding second pixel;
• a detection circuit connected with the plurality of light receivers, for performing touch positioning according to the sensing signal generated by each of the light receivers;
• a first control signal line connected with the M first pixels, the first control signal line driving the M first pixels by outputting a first drive signal;
• and
• a second control signal line connected with the N second pixels, the second control signal line driving the N second pixels to emit the detection rays with the preset frequency by outputting a second drive signal,
• wherein the plurality of light receivers are divided into P groups of light receiving sub-circuits, each group of light receiving sub-circuits comprises at least one of the light receivers, and each group of light receiving sub-circuits comprises a first output end and a second output end, where P is an integer greater than 1,
• wherein the detection circuit comprises P detection sub-circuits, each of which is connected, via a transistor, with a corresponding light receiving sub-circuit in the P groups of light receiving sub-circuits,
• wherein each of the P detection sub-circuits comprises a first input end, a second input end and an output end,
• wherein the first input end of each of the P detection sub-circuits is connected, via the transistor, with the first output end of the corresponding light receiving sub-circuit, and
• wherein the second input end of each of the P detection sub-circuits is connected with the second output end of the corresponding light receiving sub-circuit, and the second input end of each of the P detection sub-circuits is further connected with the second control signal line.