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Induction type touch screen and control method thereof

An inductive, touch-screen technology, used in instruments, electrical digital data processing, and data processing input/output processes, etc., can solve problems such as inability to perform three-dimensional force calculations, and achieve convenient and flexible device selection, high linearity, and improved sensitivity. Effect

Inactive Publication Date: 2015-10-14
ANHUI TECHN COLLEGE OF MECHANICAL & ELECTRICAL ENG
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Problems solved by technology

The pressure sensors all just collect the pressure in the vertical direction: for example, Chinese patent CN201110074892.6 adopts 10 film pressure sensors corresponding to the pressure distribution points of the soles of the feet; CN201010230489.3 adopts a matrix pressure sensor of 8 columns×10 rows; The 40 by 40 piezoresistor matrix used cannot perform three-dimensional force calculations

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  • Induction type touch screen and control method thereof
  • Induction type touch screen and control method thereof
  • Induction type touch screen and control method thereof

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Embodiment Construction

[0026] Below with reference to the accompanying drawings, through the description of the embodiments, the specific implementation of the present invention, such as the shape and structure of each component involved, the mutual position and connection relationship between each part, the function and working principle of each part, and the manufacturing process and operation and use methods, etc., are described in further detail to help those skilled in the art to have a more complete, accurate and in-depth understanding of the inventive concept and technical solutions of the present invention.

[0027] like figure 1 and figure 2 As shown, an inductive multi-touch screen includes a touch layer having a top surface and a bottom surface, a pressure sensor array and a touch sensing sensor connected to the bottom surface of the touch layer, and a pressure sensor array and a touch sensing sensor connected respectively. A control unit, a touch screen housing composed of a base and a...

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Abstract

The present invention discloses an induction type touch screen and a control method thereof. The induction type touch screen comprises a touch layer having a top surface and a bottom surface, a pressure sensor array and touch control perception sensors which are connected to the bottom surface of the touch layer, a control unit connected with the pressure sensor array and the touch control perception sensors, and a touch screen housing composed of a substrate and the periphery; the pressure sensor comprises a control unit, and a circular capacitor unit group and a strip-shaped capacitor unit group which are respectively connected with the control unit; the circular capacitor unit group is used for measuring values of tangential force and normal force; the strip-shaped capacitor unit group is used for measuring direction of the tangential force; the strip-shaped capacitor unit group is disposed at four corners of an external substrate of the circular capacitor unit group; the touch layer is disposed in the touch screen housing; the touch layer and the periphery are directly provided with buffer layers prepared by elastic materials; and the control unit comprises a touch control behavior control unit, a position acquisition control unit, and a master control unit connected with the touch control behavior control unit and the position acquisition control unit.

Description

technical field [0001] The invention belongs to the technical field of touch screens, and relates to an inductive multi-point touch screen, in particular to an inductive multi-point touch screen based on a three-dimensional capacitive pressure sensor and a control method thereof. Background technique [0002] Capacitive tactile sensors have the advantages of simple structure, low cost, high sensitivity and good dynamic response, especially for high temperature, radiation, strong vibration and other harsh conditions. However, the output of this type of sensor is generally nonlinear, and the inherent parasitic capacitance and distributed capacitance will affect the sensitivity and measurement accuracy of the sensor. Since the 1970s, with the development of integrated circuit technology, a capacitive sensor packaged with a miniature measuring instrument has appeared. This new type of sensor can greatly reduce the influence of distributed capacitance and overcome its inherent sh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/041G06F3/044
Inventor 张婷婷杨云伟吴凤霞
Owner ANHUI TECHN COLLEGE OF MECHANICAL & ELECTRICAL ENG
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