Pressure sensor and display device

一种压力传感器、压力的技术，应用在仪器、计算、电数字数据处理等方向，能够解决压力传感器解析度及感测精度低等问题，达到增加数量、提高感测精度、提高解析度的效果

Active Publication Date: 2017-05-24
TPK TOUCH SOLUTIONS (XIAMEN) INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to overcome the technical problems of low resolution and sensing accuracy of existing pressure sensors, the present invention provides a pressure sensor and a display device

Method used

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  • Pressure sensor and display device
  • Pressure sensor and display device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Such as figure 1 and figure 2 As shown, a pressure sensor 10 includes a plurality of pressure cells 100 . The pressure unit 100 includes four resistors with the same resistance value. The four resistors are respectively a first resistor 101 , a second resistor 102 , a third resistor 103 and a fourth resistor 104 . The four resistors form a Wheatstone bridge 110 . Wherein, the first resistor 101 is connected in series with the second resistor 102 , the third resistor 103 is connected in series with the fourth resistor 104 , and the two series circuits are connected in parallel to form a Wheatstone bridge 110 .

[0042] Further, the B terminal of the bridge 110 (between the first resistor 101 and the fourth resistor 104) is connected to the first power supply terminal, and the D terminal of the bridge 110 (between the second resistor 102 and the third resistor 103) is connected to ground terminal. The A terminal (between the first resistor 101 and the second resistor ...

Embodiment 2

[0090] Such as Figure 15 As shown, a display device 1 includes the pressure sensor 10 provided in the first embodiment. Preferably, the display device 1 further includes a display screen 20 , the display screen 20 includes a light emitting surface 201 and a backlight surface 202 , and the pressure sensor 10 is located on one side of the backlight surface 202 . The display screen 20 may be an OLED display screen or an LCD display screen. Generally, an optical glass 30 is provided on the side of the light emitting surface. The function of the optical glass 30 is to protect the display screen 20 and the pressure sensor. Generally speaking, the optical glass 30 is also the TP cover glass.

[0091] Compared with the prior art, the pressure sensor provided by the present invention includes a plurality of pressure units, and the electrode orthographic projections of the two resistors of each resistor group in each pressure unit are at least partially overlapped. Therefore, the ar...

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PUM

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Abstract

The invention relates to the touch technical field and in particular relates to a pressure sensor and a display device. The pressure sensor comprises a plurality of pressure units. Each of the pressure units comprises four resistors same in resistance value, the four resistors form a Wheatstone bridge, two of the resistors form a first resistor group and the other two form a second resistor group; in a direction vertical to the plane of the pressure units, orthogonal projections of electrodes of the two resistors in each resistor group are at least overlaid partially; the extending directions of electrode pattern shapes of the two resistors in each resistor group are different. The pressure sensor has the advantages of being high in resolution and sensing precision. The display device comprises the pressure sensor. As the pressure sensor has the advantages of being high in resolution and sensing precision, the product competitiveness of the display device is enhanced.

Description

[0001] 【Technical field】 [0002] The invention relates to the field of touch technology, in particular to a pressure sensor and a display device. [0003] 【Background technique】 [0004] With the development of touch technology, both industrial electronic devices and consumer electronic devices mostly use display devices with touch functions. Traditional display devices only have touch functions and cannot meet customer needs. In order to enhance user experience, it has become a trend to mount a pressure sensor in a traditional display device to increase the pressure sensing function. [0005] The pressure sensor includes a plurality of pressure units to sense the touch position and pressure from a finger or a stylus. With the development of display devices and the needs of customers, the requirements for the resolution of pressure sensors are getting higher and higher. Each pressure unit on the existing pressure sensor occupies a relatively large area, so the number of pre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/041
CPCG06F3/0414G06F3/04144G06F3/045G06F3/0412
Inventor 纪贺勋蒋承忠陈风
Owner TPK TOUCH SOLUTIONS (XIAMEN) INC
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