Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Touch panel and its display device, method of driving touch panel, and electronic device

A technology for a display device and a display part, applied in the fields of touch panels and display devices, drivers, and electronic devices, capable of solving problems such as increasing the aperture ratio of the display device and reducing the aperture ratio of the display device, and achieving the effect of high sensitivity

Inactive Publication Date: 2011-08-31
JAPAN DISPLAY INC
View PDF4 Cites 16 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, in the case of integrating the touch panel and the display device together, it is possible to increase the aperture ratio of the display device.
[0007] However, in the touch panel integrated with the display device already disclosed in "Integrated Active Matrix Capacitive Sensors for TouchPanel LTPS-TFT LCDs", E. Kanda et al., SID DIGEST, 2008, pp. 834 to 837, except In addition to the amplification transistor, a control line and a control transistor for controlling the amplification transistor are also necessary in each touch sensor, and there is a risk of reducing the aperture ratio of the display device

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Touch panel and its display device, method of driving touch panel, and electronic device
  • Touch panel and its display device, method of driving touch panel, and electronic device
  • Touch panel and its display device, method of driving touch panel, and electronic device

Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0062] (Structure example)

[0063] figure 1 A structural example of a display device with a touch sensor according to the first embodiment of the present disclosure is shown. figure 2 A structural example of a main part of a display device with a touch sensor is shown. Since the method of driving the touch panel according to the embodiment of the present disclosure is implemented through this embodiment, a description thereof will be additionally given in this embodiment. The display device 1 with a touch sensor is a so-called in-cell display device integrating a display panel and a touch panel. The display device 1 with a touch sensor uses a liquid crystal element as a display element, and is configured by using a contact type touch sensor and a capacitive type touch sensor as touch sensor elements. Such as figure 1 As shown, the display device 1 with a touch sensor includes a display unit with a built-in touch sensor 10 , a display drive unit 21 , a touch detection uni...

Deformed example 1-1

[0149] In the above-mentioned embodiments, although the display unit 10 with a built-in touch sensor is figure 2 The minimum components necessary and the minimum wiring necessary are shown, but the disclosure is not limited thereto. In this way substitution, for example, as in Figure 7 As shown, the display unit 10 with a built-in touch sensor can be configured by adding a sensor control line SCL.

[0150] Although one end of the pixel capacitor Cpix is ​​connected to figure 2 In the common signal line COML, but in the alternative of this way, one end of the pixel capacitance Cpix can be connected to Figure 7 The sensor control line SCL in. The sensor control line signal Vse is supplied to the sensor control line SCL. The sensor control line signal Vse has the same waveform as the common signal Vcom, and the voltage magnitude of the sensor control line signal Vse is greater than that of the common signal Vcom.

[0151] Figure 8 A timing waveform diagram of a display...

no. 2 approach

[0154] Next, a display device with a touch sensor according to a second embodiment of the present disclosure will be described. In this embodiment, the method of driving the gate line GCL by the vertical driving section 24 is different from that of the first embodiment. In other words, in the first embodiment, although the vertical drive section 24 triggers the gate line signal Gate to one gate line GCL in periods other than the pixel electrode precharge period in each horizontal line period (1H), In the display device 1B with a touch sensor of this embodiment, the vertical driving section 24 triggers the gate line signal Gate to two or more gate lines GCL. The circuit structure of the display device 1B with a touch sensor of this embodiment is the same as that of the first embodiment ( figure 1 and figure 2 ), and the vertical driving section 24 drives the gate line GCL as described above. Other operations are the same as the first embodiment ( Figure 5 ) in the same wa...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a touch panel and its display device, a method of driving touch panel and an electronic device. In one example embodiment, a display device includes a drive control section operatively coupled to a signal line and a display section. The signal line has a first voltage. In one example embodiment, the display section includes: (a) a touch detection element which outputs a touch voltage; and (b) an electrode which has a second voltage. In one example embodiment, the drive control section increases a potential difference between the first voltage and the second voltage before the touch detection element outputs the touch voltage.

Description

[0001] Cross References to Related Applications [0002] This application claims priority from Japanese Patent Application No. JP 2010-042801 filed with the Japan Patent Office on February 26, 2010, the entire contents of which are hereby incorporated by reference. technical field [0003] In recent years, instead of using typical The realization of information input by mechanical buttons has attracted people's attention. In a display device including such a touch panel, since an input unit such as a keyboard, a mouse, and a keypad is unnecessary, there is a tendency to expand the use of a display device in a portable information terminal such as a portable phone in addition to a computer. . Background technique [0004] There are several types of touch panels, one of which is a type of detecting bending of the touch panel by pressure (touch) of a finger or the like. For this method, for example, a touch panel (contact type, etc.) utilizes that two substrates that are dis...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): G02F1/133G06F3/041G06F3/044G09G3/36
CPCG06F3/044G06F3/0412G06F3/047G06F3/0447
Inventor 水桥比吕志小糸健夫林宗治
Owner JAPAN DISPLAY INC
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com