Display Device with Capacitive Coupling Type Touch Panel Input Device

a capacitive coupling and input device technology, applied in the direction of instruments, optical elements, conductive layers on insulating supports, etc., can solve the problems of individual differences for each film, required formation cost, etc., and achieve the effect of high environmental resistance reliability

Inactive Publication Date: 2017-06-15
RESONAC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patent relates to a display device with a touch panel input device that uses metal nanowires. The invention is based on the fact that metal nanowires have high reliability in resisting environmental factors and can detect changes in capacitance accurately. The technical effect of the invention is to provide a reliable and efficient tool for detecting changes in capacitance which is useful in improving the user experience of display devices.

Problems solved by technology

However, since a metal oxide film is usually formed by vacuum deposition through a sputtering method, a formation cost is required.
It is conceivable that those methods suffer from a problem that the film is dried and contracted at the time of forming the dried film after the coating time, and a contact junction state between the metal nanowires is fluctuated, and an individual difference occur for each film.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

first embodiment

[0037]FIG. 1 is a cross-sectional view of a display device with a capacitive coupling type touch panel input device according to a first embodiment.

[0038]The display device with the capacitive coupling touch panel input device according to the present embodiment includes a capacitive coupling type touch panel 102 on an upper surface of a display device 101, and further includes a specific wavelength range light transmission layer 103 that servers as a light transmission layer for transmitting a visible light having a wavelength of 430 nm or more on an upper surface of the touch panel.

[0039]In the present embodiment, an embodiment in which the display device 101 is a liquid crystal display device is illustrated in a sectional view of FIG. 2. In the case where the display device is the liquid crystal display device, a liquid crystal display device 201 has a structure described below. A display circuit which is a pixel assembly of thin film transistor circuits arranged in a matrix is d...

second embodiment

[0054]FIG. 3 is a cross-sectional view of a display device with a capacitive coupling touch panel input device according to a second embodiment.

[0055]In the display device with the capacitive coupling touch panel input device according to the second embodiment, a capacitive coupling type touch panel 302 is bonded to an upper surface of a light crystal display device 301 through an optically transparent adhesive layer 302. The touch panel 302 includes a touch panel transparent electrode circuit 310 for detecting touch position coordinates on a surface of a touch panel transparent substrate 311.

[0056]Furthermore, an upper surface of the touch panel transparent substrate 311 is provided with a second specific wavelength range light transmission layer 312 to be a light transmission layer for transmitting the visible light having a wavelength of 430 nm or more.

[0057]In the present embodiment, the touch panel transparent substrate 311 and the specific wavelength range light transmission l...

third embodiment

[0059]FIG. 4 is a cross-sectional view of a display device with a capacitive coupling touch panel input device according to a third embodiment.

[0060]In the display device with the capacitive coupling touch panel input device according to the present embodiment, a first specific wavelength range light transmission layer 402 to be a light transmission layer for transmitting a visible light having a wavelength of 430 nm or more is disposed on an upper surface of the display device 401, a capacitive coupling type touch panel 403 is disposed on an upper surface of the first specific wavelength range light transmission layer 402, and a second specific wavelength range light transmission layer 404 serving as a light transmission layer that transmits the visible light having a wavelength of 430 nm or more is disposed on an upper surface of the touch panel.

[0061]In the present embodiment, an embodiment in which the display device is a liquid crystal display device is illustrated in a cross s...

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Abstract

A display device attached with a capacitive coupling type touch panel formed of a transparent conductive film containing metal nanowires as a transparent electrode is exposed to sunlight in an outdoor use and a problem of impairing the reliability of electronic characteristics as an electronic component is solved. As a means for solving the problem, in a display device with a touch panel input device, a structure in which a touch panel substrate is attached to an upper surface of a display device is provided with a light transmission layer that transmits a visible light having a wavelength of 430 nm or more on an upper surface side of the touch panel substrate, or on an upper surface side and a lower surface side of a touch panel, thereby suppressing a light incidence in a wavelength range affecting a metal nanowire conductive film.

Description

TECHNICAL FIELD[0001]The present invention relates to a display device with a capacitive coupling type touch panel using a metal nanowire conductive film as a transparent electrode as an input device.BACKGROUND ART[0002]An active matrix type display device using a thin film transistor has advantages such as thinness and light weight and is generally used as a display device for various electronic devices such as a television, a computer, a cellular phone, a small mobile device, an in-vehicle device, and the like.[0003]Many of those display devices are configured by a liquid crystal display device having a combination of a liquid crystal cell in which a liquid crystal is sandwiched between a pair of transparent substrates, optically anisotropic films that are laminated on both of outer sides of the liquid crystal cell, and a backlight serving as a display light source, or an organic electroluminescence display device in which an organic electroluminescent material is sandwiched betwe...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): G02F1/1333H01L27/32G02F1/1343G02F1/1335G06F3/044G02F1/1362
CPCG02F1/13338G06F3/044G02F1/136286G02F2001/136295G02F1/133504H01L27/323G02F1/13439G02F1/133509G02F2203/055G06F2203/04103G06F2203/04111G06F3/0446G06F3/04164G06F3/0443H10K59/40G02B5/22G02B5/282G02F1/1336H01B1/02H01B5/14G02B6/00G02F1/136295
Inventor TANAKA, JUN
Owner RESONAC CORP
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