An organic electroluminescence touch panel, a driving method thereof, a display device

Abstract

The invention discloses an organic electroluminescent touch panel, its driving method and a display device. On the basis of not changing the original organic electroluminescent structure, the cathode layer of the organic electroluminescent structure is divided to form multiple Independent and insulated cathode, in the touch stage, the cathode is used as a touch electrode to sense the external touch, and the touch signal is transmitted to the touch display integrated chip through the lead wire, so as to realize the integration of the display panel on the basis of organic electroluminescence display The touch function is realized, and the control terminal of the driving module is initialized in the reset stage through the pixel driving circuit, and the threshold voltage of the driving module is compensated in the compensation stage, which avoids the impact of the change of the threshold voltage of the driving module on the organic electroluminescent structure. At the same time, the signal on each signal line is synchronously modulated with the external touch signal induced by the touch electrode during the touch stage, which can eliminate the parasitic capacitance of the touch electrode and improve the touch performance of the touch panel.

Description

technical field [0001] The present invention relates to the field of display technology, in particular to an organic electroluminescence touch panel, a driving method thereof and a display device. Background technique [0002] With the advancement of display technology, more and more active matrix organic light emitting diode (Active Matrix Organic Light Emitting Diode, AMOLED) display panels have entered the market, compared with traditional transistor liquid crystal display panels (Thin Film Transistor Liquid Crystal Display, TFT LCD) In comparison, it has the advantages of low energy consumption, low production cost, self-illumination, wide viewing angle and fast response speed, and with the development of touch screen technology and market requirements, the overall module thinning is the market development trend, so the touch structure is composed of The touch sensor plug-in type develops to the touch sensor embedded type, so that the thickness of the touch panel can be ...

AI Technical Summary

Problems solved by technology

[0003] However, in the pixel circuit that drives the OLED to emit light, the threshold voltage V of the drive transistor in the pixel circuit will th There is inhomogeneity, which causes the current flowing through each pixel OLED to change, resulting in uneven display brightness, which affects the display effect of the entire image. In addition, generally, the embedded touch screen using self-capacitance touch technology Control panel, the touch electrode has parasitic capacitance, and its parasitic capacitance mainly comes from the signal lines used to transmit various control signals on the touch panel. Therefore, in order to improve the touch performance of the touch panel, it is necessary to reduce the parasitic capacitance of the touch electrode. capacitance

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