TOUCH DISPLAY CIRCUIT AND DISPLAY DEVICE

摘要

A touch display circuit and a display device are provided. The touch display circuit comprises a photosensitive touch unit (11), a driving unit (12), a threshold compensating unit (13) and a display unit (14). The photosensitive touch unit (11) generates a second detection signal under a control of a second scanning signal terminal (S2) when a first scanning signal terminal (S1) inputs a first detection signal. The threshold compensating unit (13) outputs a control voltage to a control terminal (d1) of the driving unit (12), outputs an operating voltage to an input terminal (d2) of the driving unit (12), and compensates a threshold voltage of the driving unit (12) by using the control voltage under control of a third scanning line signal terminal (S3), a fourth scanning line signal terminal (S4) and a data line (Data). The driving unit (12) outputs a driving current to the display unit (14) via an output terminal (d3) under control of the control voltage and the operating voltage. The display unit (14) is driven to emit light by the driving current under control of the fifth scanning signal terminal (S5). By using the touch display circuit, photosensitive in cell touch technology can be integrated into an AMOLED display.

主权项

1. A touch display circuit, comprising a photosensitive touch unit, a driving unit, a threshold compensating unit and a display unit; wherein
the photosensitive touch unit is connected with a first scanning signal terminal, a second scanning signal terminal, a signal detection line and a data line, and is used for, when the first scanning signal terminal inputs a first detection signal, generating a second detection signal according to light intensity of a touch position and a data signal of the data line under control of the second scanning signal terminal, and outputting the second detection signal through the signal detection line; the threshold compensating unit is connected with a third scanning line signal terminal, a fourth scanning line signal terminal, the data line and a control terminal and an input terminal of the driving unit, and is used for outputting a control voltage to the control terminal of the driving unit, outputting an operating voltage to the input terminal of the driving unit, and compensating a threshold voltage of the driving unit in the control voltage under control of the third scanning line signal terminal, the fourth scanning line signal terminal and the data line; the control terminal and the input terminal of the driving unit are connected with the threshold compensating unit, and are used for outputting a driving current to the display unit via an output terminal under control of the control voltage and the operating voltage; the display unit is connected with a fifth scanning signal terminal and the output terminal of the driving unit, and is used for being driven to emit light by the driving current under control of the fifth scanning signal terminal.