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Display device and driving method thereof

A technology of a display device and a driving method, which is applied in the directions of instruments, calculations, and electrical digital data processing, etc., which can solve problems such as large assembly tolerances and limited detection accuracy, and achieve good detection accuracy and small structural design changes

Active Publication Date: 2017-05-24
BOE TECH GRP CO LTD +1
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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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  • Display device and driving method thereof
  • Display device and driving method thereof
  • Display device and driving method thereof

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Embodiment Construction

[0034] The specific implementation manners of the display device and the driving method thereof provided by the embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0035] 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.

[0036] A display device provided by an embodiment of the present invention, such as figure 1 As shown, it includes: an array substrate 100 and an opposing substrate 200 facing each other, and a self-capacitance electrode 300 disposed between the array substrate 100 and the opposing substrate 200, and also includes:

[0037] The backlight metal 500 disposed on the back of the backlight module 400 below the array substrate 100, the backlight metal 500 and the self-capacitance electrode 300 form a capacitor structure;

[0038] During the touch detection period, the self-capacitance...

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Abstract

The invention discloses a display device and a driving method thereof; force sensing function is achieved via a capacitance structure formed between self-capacitance electrodes and backlight metal of a touch screen; in the period of touch detection, a touch detection signal is loaded to both the self-capacitance electrodes and the backlight metal, a touch position is judged by detecting changes in capacitances of the self-capacitance electrodes so as to achieve the touch detection function; in the period of force detection, a touch detection signal is loaded to the self-capacitance electrodes or the backlight metal, a change in the distance between the self-capacitance electrodes and the backlight metal due to force touch may lead to charge and discharge of the capacitance structure formed between the self-capacitance electrodes and the backlight metal, and therefore the magnitude of force at the touch position can be judged by detecting changes in the capacitances of the self-capacitance electrodes so as to achieve the force sensing function. The display device provided by the embodiment of the invention experiences few structural design modifications not limited to assembly allowance, better detection precision is benefited, and manufacture cost can be saved.

Description

technical field [0001] The present invention relates to the technical field of touch display, in particular to a display device and a driving method thereof. 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 the 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. Contents of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/044
CPCG02F1/13338G06F2203/04107G06F2203/04105G06F3/0412G06F3/0447G06F3/04166G06F3/0443G02F1/134336G02F1/136286G02F1/1368
Inventor 丁小梁董学王海生陈小川刘英明刘伟赵卫杰李昌峰王鹏鹏杨盛际
Owner BOE TECH GRP CO LTD
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