Touch display panel and display device

Abstract

The invention discloses a touch display panel and a display device. The touch display panel is provided with a display area and a non-display area. The touch display panel comprises a touch panel, a display panel, an isolating layer and a plurality of pressure sensing units. The display panel comprises an array substrate, a first electrode, a pixel defining layer, a light emitting layer and a second electrode; the isolating layer is arranged between the touch panel and the second electrode; the pressure sensing units are arranged in the non-display area and each comprise a first resistor, a second resistor, a third resistor and a fourth resistor which form a Wheatstone bridge, wherein the first resistor and the third resistor are both used for sensing deformation in a second direction andarranged on the side, away from the touch panel, of the isolating layer, the second resistor and the fourth resistor are both used for sensing deformation in a third direction and arranged on the side, away from the display panel, of the isolating layer, and the second direction and the third direction intersect with each other and are both perpendicular to a first direction. By arranging the isolating layer, the detection performance of the pressure sensing units for user's press operation is improved, and the user experience is improved.

Description

technical field [0001] The present invention relates to the technical field of semiconductors, and more specifically, to a touch display panel and a display device. Background technique [0002] Organic light-emitting diodes (Organic Light-Emitting Diodes, OLED) are used as the semiconductor material in the light-emitting diode. When a current passes through, the holes generated by the positive electrode and the electrons generated by the negative electrode recombine in the light-emitting layer and release photons. By adjusting the energy released during the recombination of electron-hole pairs in the OLED, photons of different energies can be emitted, corresponding to different colors of light. The display panel using OLED as the display material has the advantages of self-illumination, wide viewing angle, high contrast, etc., and is widely used in smart products such as mobile phones, digital cameras, and notebook computers. It is the research focus of many scholars at ho...

AI Technical Summary

Problems solved by technology

[0003] In the prior art, display panels with touch functions include capacitive screens and resistive screens. These touch panels can detect the position where the user touches the display panel, thereby judging the user's touch operation and gesture operation, but cannot detect the user's touch. In recent years, there has been a touch display panel with pressure detection that can detect the position and strength of the user's pressure-sensitive operation. When the user is operating, the touch display panel detects the size and position of the user's pressure to make a Because the mechanical strength of the touch display panel is not high, the user generally does not press too hard to prevent damage to the touch display panel. Therefore, this requires the touch display panel to be able to identify the user. Small changes in applied pressure place demands on the sensitivity of the touch display panel

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