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Touch panel and method for driving the same

一种驱动方法、触摸屏的技术，应用在便携式计算机的结构部件、数据处理的输入/输出过程、仪器等方向，能够解决显示质量降低、显示装置开口率降低等问题，达到高灵敏度、高检测的效果

Inactive Publication Date: 2010-05-26
SEMICON ENERGY LAB CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the integration degree of the touch sensor is increased, the aperture ratio of the display device will be reduced, and the display quality will be reduced.

Method used

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  • Touch panel and method for driving the same
  • Touch panel and method for driving the same
  • Touch panel and method for driving the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0068] In this embodiment, as one of the preferred modes of the touch screen, refer to Figure 5 An example of a touch panel having a liquid crystal element will be described. Figure 5 It is a cross-sectional view showing a state where a finger 135 to be detected touches a display portion of the touch panel.

[0069] As the substrate 150, a light-transmitting substrate such as a glass substrate or a quartz substrate is used. At least a thin film transistor 151 , a thin film transistor 152 and a photosensor 153 are disposed on the substrate 150 . The thin film transistor 151 is connected to the photosensor 153, and the thin film transistor 152 is connected to the liquid crystal element. In the photosensor 153 , an n-type semiconductor layer 160 , an i-type semiconductor layer 161 , and a p-type semiconductor layer 162 are stacked. The n-type semiconductor layer 160 contains an impurity element such as phosphorus that imparts n-type conductivity. The i-type semiconductor la...

Embodiment 2

[0095] In this example, an electronic device to which the touch panel shown in the above-mentioned embodiments and examples is applied and an application example using it will be described.

[0096] Figure 6A A monitor type touch panel of one embodiment of the present invention is shown. Figure 6A The illustrated monitor-type touch panel has a housing 176, a display portion 177, a support stand 178, and the like. A touch panel according to one embodiment of the present invention is incorporated in the casing 176 and photosensors are provided in pixels of the display unit 177, so that the display unit 177 has a display function and an information input function. By applying the touch panel of one aspect of the present invention, high-sensitivity detection can be performed, and a monitor-type touch panel with high reading accuracy can be obtained.

[0097] Figure 6B A portable game machine to which a touch panel according to one embodiment of the present invention is appli...

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Abstract

A touch panel having high reading accuracy of an object to be detected is provided. In a method for driving a touch panel which is provided with a photo sensor in a pixel, an image is displayed in a display portion of a touch panel, a detection region is determined by detecting approach or contact of an object to be detected in a state in which the image is displayed, and the object to be detected is read while substantially equalizing the intensity of light of pixels in the detection region per unit time and unit area. The intensity of light of the pixels per unit time and unit area, which is to be substantially equal, is preferably the maximum intensity of light in the detection region before adjustment, more preferably, the intensity of light for white display.

Description

technical field [0001] The invention relates to a touch screen composed of touch sensors and a driving method thereof. In particular, the present invention relates to a touch screen in which pixels having touch sensors are arranged in a matrix shape and a driving method thereof. Furthermore, the present invention relates to a semiconductor device and electronic equipment including the touch sensor. Background technique [0002] In recent years, touch sensor-mounted display devices have attracted attention. A display device mounted with a touch sensor is called a touch screen or a touch screen or the like (hereinafter referred to as a touch screen). As a touch sensor, there are, for example, a resistive film type or an electrostatic capacitive type, and these systems differ in their operating principles. However, in any of the above methods, data can be input by touching the detection object to the display portion of the display device or the like. [0003] As one of the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/042G09G3/36
CPCG06F3/0412G06F3/042G06F1/1616G06F3/03547G06F1/1643G06F1/1626
Inventor 黒川义元池田隆之
Owner SEMICON ENERGY LAB CO LTD