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An embedded touch screen, its driving method and display device

An embedded touch screen and substrate substrate technology, which is applied in the direction of instruments, semiconductor devices, computing, etc., can solve the problems of detection accuracy limitation, large assembly tolerance, etc., achieve small structural design changes, save production costs, and good detection accuracy Effect

Active Publication Date: 2020-02-07
BOE TECH GRP CO LTD +1
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AI Technical Summary

Problems solved by technology

At present, the way to achieve pressure sensing in the display field, especially in the field of mobile phones or tablets, is to add an additional mechanism to the backlight part of the LCD panel or the middle frame of the mobile phone. This design requires structural design of the LCD panel or mobile phone. changes, and the probing accuracy of this design is limited due to large assembly tolerances

Method used

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  • An embedded touch screen, its driving method and display device
  • An embedded touch screen, its driving method and display device
  • An embedded touch screen, its driving method and display device

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Embodiment Construction

[0035] The specific implementation manners of the in-cell touch screen provided by the embodiments of the present invention, its driving method and the display device will be described in detail below with reference to the accompanying drawings.

[0036] The thickness and shape of each film layer in the drawings do not reflect the real scale, and the purpose is only to illustrate the content of the present invention.

[0037] An embodiment of the present invention provides an embedded touch screen, such as figure 1 As shown, it includes: a base substrate 100, an opposite substrate 200 disposed opposite to the base substrate 100, and a plurality of organic electroluminescent pixel units 110 arranged in a matrix on the side of the base substrate 100 facing the opposite substrate 200 , wherein each organic electroluminescent pixel unit 110 includes an anode layer 111, a light emitting layer 112, and a cathode layer 113 sequentially located on the base substrate; it also includes:...

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Abstract

The invention discloses an embedded touch screen, its driving method and a display device. By adding a pressure-sensitive detection electrode between a cathode layer of an organic electroluminescence pixel unit and an opposite substrate, the pressure-sensitive detection electrode and the cathode layer are formed Capacitive structure; when the position of the pressure-sensitive detection electrode is pressed, the distance between the pressure-sensitive detection electrode and the cathode layer changes and the capacitance between the two changes accordingly. In the control stage, the pressure detection signal is applied to the pressure detection electrode, and the pressure of the touch position is determined by detecting the change of the capacitance value between the pressure detection electrode and the cathode layer, so that the pressure touch function can be realized. In addition, the cathode layer is reused in the pressure-sensitive touch stage, and the pressure-sensitive detection electrodes are integrated into the touch screen, so that the structural design of the display device is less changed and will not be limited by assembly tolerances, which is conducive to achieving better detection accuracy, and It is beneficial to save the production cost.

Description

technical field [0001] The invention relates to the field of display technology, in particular to an embedded touch screen, a driving method thereof and a display device. Background technique [0002] Pressure sensing technology refers to the technology that can detect external force. This technology has been used in industrial control, medical and other fields a long time ago. At present, the way to achieve pressure sensing in the display field, especially in the field of mobile phones or tablets, is to add an additional mechanism to the backlight part of the LCD panel or the middle frame of the mobile phone. This design requires structural design of the LCD panel or mobile phone. changes, and the probing accuracy of this design is limited due to large assembly tolerances. [0003] Therefore, how to realize pressure sensing with high detection accuracy with little modification of the display panel hardware is an urgent problem to be solved by those skilled in the art. Co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F3/041G06F3/044
CPCG06F3/0414G06F3/044G06F2203/04112H10K59/8052G06F3/0412G06F3/04166G06F3/0443G06F3/0447H10K59/40H10K50/82H10K59/1216G06F2203/04105
Inventor 杨盛际董学薛海林陈小川王海生刘英明赵卫杰丁小梁刘红娟李昌峰王鹏鹏刘伟
Owner BOE TECH GRP CO LTD
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