Display panel, display device, and pressure detection method

Abstract

The embodiment of the invention provides a display panel, a display device and a pressure detection method, and relates to the technical field of pressure touch. By the pressure detection method, pressure touch detection can be more accurately performed according to the pressing degree so as to avoid maloperation caused by factors other than the pressing degree. The display panel comprises a first pressure sensing electrode and a plurality of second pressure sensing electrodes, wherein in each pressure sensing electrode unit, the plurality of second pressure sensing electrodes are mutually insulated; in each pressure sensing electrode unit, the orthographic projection of the first pressure sensing electrode on a second substrate is overlapped with the orthographic projection of each second pressure sensing electrode on the second substrate; each pressure sensing electrode unit further comprises pressure sensing supporting structures corresponding to the second pressure sensing electrodes; any two pressure sensing supporting structures have different heights; the pressure sensing supporting structures are used for communicating the first pressure sensing electrode with the corresponding second pressure sensing electrodes through a conductive layer when the display panel is pressed.

Description

【Technical field】 [0001] The present invention relates to the field of pressure touch technology, in particular to a display panel, a display device and a pressure detection method. 【Background technique】 [0002] With the development of touch display technology, the functions of touch operation methods in display products are becoming more and more diversified. For example, the display products implement a pressure touch function. For example, if figure 1 as shown, figure 1 It is a structural schematic diagram of a display panel in the prior art. The current liquid crystal display panel includes a first substrate 11 and a second substrate 12, a liquid crystal layer is arranged between the first substrate 11 and the second substrate 12, and a liquid crystal layer is arranged in the liquid crystal layer. Liquid crystal 2, the surface of the first substrate 11 facing the second substrate 12 is provided with a first pressure-sensitive electrode 31, the surface of the second s...

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Problems solved by technology

[0003] However, since the distance between the first substrate 11 and the second substrate 12 changes slightly when the display panel is under force, it is necessary to set a preset capacitance value that is relatively close to the default capacitance value in order to be able to detect pressure touch. However, the liquid crystal 2 in the liquid crystal layer will be deflected under the electric field formed by the pixel electrode and the common electrode to realize screen display, and the liquid crystal layer acts as a capacitive medium between the first pressure-sensitive electrode 31 and the second pressure-sensitive electrode 32, The change of its permittivity will also affect the capacitance value between the first pressure-sensitive electrode 31 and the second pressure-sensitive electrode 32. After the liquid crystal 2 is deflected, the permittivity of the liquid crystal layer will also change. Therefore, the permittivity of the liquid crystal layer Changes in the chip may cause the chip to fail to detect pressure touch correctly, that is, the pressure touch detection cannot be accurately performed according to the degree of pressing, resulting in misoperation

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