WO2017110038A1 - タッチパネルと、これを用いた表示装置 - Google Patents
タッチパネルと、これを用いた表示装置 Download PDFInfo
- Publication number
- WO2017110038A1 WO2017110038A1 PCT/JP2016/004948 JP2016004948W WO2017110038A1 WO 2017110038 A1 WO2017110038 A1 WO 2017110038A1 JP 2016004948 W JP2016004948 W JP 2016004948W WO 2017110038 A1 WO2017110038 A1 WO 2017110038A1
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- WIPO (PCT)
- Prior art keywords
- touch panel
- micrometers
- less
- layer
- average roughness
- Prior art date
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Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
- G06F3/0445—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/02—Diffusing elements; Afocal elements
- G02B5/0205—Diffusing elements; Afocal elements characterised by the diffusing properties
- G02B5/021—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place at the element's surface, e.g. by means of surface roughening or microprismatic structures
- G02B5/0221—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place at the element's surface, e.g. by means of surface roughening or microprismatic structures the surface having an irregular structure
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/13338—Input devices, e.g. touch panels
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1343—Electrodes
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0412—Digitisers structurally integrated in a display
Definitions
- the present disclosure relates to a touch panel used for data input in various electronic devices and a display device.
- a conventional touch panel has a front surface (first surface) and a back surface (second surface).
- the back surface is provided on the side opposite to the front surface.
- the back surface of the touch panel is disposed to face the display. Then, the light output from the display device is visually recognized by an operator or the like through the touch panel.
- the front surface of the touch panel is a display surface for displaying an image or the like output from the display device, and is also an operation surface for inputting data by touching an operator's finger or the like. Note that unevenness may be formed on the back surface of the touch panel.
- the arithmetic average roughness Ra of the irregularities is not less than 0.3 micrometers and not more than 0.4 micrometers.
- Patent Document 1 is known as prior art document information related to the invention of this application.
- the touch panel has a first surface and a second surface opposite to the first surface.
- the arithmetic average roughness of the first surface is not less than 0.06 micrometers and not more than 0.13 micrometers.
- the arithmetic average roughness of the second surface is not less than 0.06 micrometers and not more than 0.3 micrometers.
- FIG. 1 is a schematic cross-sectional view of a display device according to an embodiment.
- FIG. 2 is a schematic cross-sectional view of the touch panel in the embodiment.
- FIG. 3 is a schematic cross-sectional view of another touch panel in the embodiment.
- FIG. 4 is a schematic cross-sectional view of still another touch panel in the embodiment.
- FIG. 5 is a schematic cross-sectional view of still another touch panel in the embodiment.
- FIG. 6 is a schematic cross-sectional view of still another touch panel in the embodiment.
- the arithmetic average roughness Ra of the unevenness on the back surface of the conventional touch panel is 0.3 to 0.4 micrometers and is a large value.
- the light output from the display device is concentrated on a specific area on the display surface (front surface) due to the lens effect caused by the unevenness on the back surface of the touch panel.
- the variation in the luminance of light increases on the display surface.
- the display surface of the touch panel appears to glitter. This is called glare.
- This phenomenon is particularly likely to occur when a touch panel with large unevenness on the back surface is arranged on a high-resolution display.
- reflection on the screen is likely to occur.
- the display device is, for example, a liquid crystal display (LCD) or an organic electroluminescence display (organic EL display). These displays are required to display images with high definition and to display moving images with powerful and high image quality. For this reason, in recent years, the resolution of such display devices has been increasing. And the display apparatus which has such a high resolution display and a touch panel has been mounted in portable apparatuses, such as a smart phone and a tablet terminal, for example. Further, such a display device has recently been used for inputting various instructions on a mobile device. An in-vehicle electronic device equipped with such a touch panel is, for example, a car navigation system.
- LCD liquid crystal display
- organic EL display organic electroluminescence display
- the viewing angle of the mobile device can be adjusted by the operator changing the angle and position of the mobile device. Therefore, the necessity for considering the antiglare property (reflection) was low. Therefore, the display surface and the back surface of the touch panel mounted on such a portable device are both smooth.
- electronic devices such as those described above may be incorporated in a predetermined position of a dashboard, for example, for vehicle use.
- a touch panel mounted on a mobile device is required to have high-definition display with less glare and less reflection (excellent antiglare property).
- FIG. 1 is a schematic sectional view of the display device 11.
- the display device 11 includes a touch panel 12 and a display 13.
- the touch panel 12 is disposed on the front side of the display 13.
- the front surface of the display 13 is a surface that emits light.
- the display 13 outputs red, green, and blue light to the front surface.
- the touch panel 12 is disposed with a gap 14 with respect to the display device 13.
- the touch panel 12 has a front surface 12A (first surface) and a back surface 12B (second surface).
- the back surface 12B is provided on the side opposite to the front surface 12A.
- the back surface 12 ⁇ / b> B is disposed to face the front surface of the display device 13. Therefore, the light output from the display device 13 is incident on the back surface 12 ⁇ / b> B of the touch panel 12.
- the front surface 12 ⁇ / b> A is disposed on the most front side in the display device 11.
- the back surface 12 ⁇ / b> B is arranged on the most back side in the touch panel 12.
- the arithmetic average roughness (Ra) of the unevenness of the front surface 12A is preferably 0.06 micrometers or more and 0.13 micrometers or less.
- the arithmetic average roughness (Ra) of the unevenness of the front surface 12A is more preferably 0.08 micrometers or more and 0.11 micrometers or less.
- the arithmetic average roughness (Ra) of the unevenness of the back surface 12B is preferably 0.06 micrometers or more and 0.3 micrometers or less.
- the arithmetic average roughness (Ra) can be measured by, for example, a surf test manufactured by Mitutoyo Corporation.
- the unevenness formed on the front surface 12A suppresses the occurrence of reflection.
- the light emitted from the display 13 is scattered by the unevenness of the back surface 12B. Therefore, it can suppress that the light output from the indicator 13 concentrates on a specific area
- the touch panel 12 can suppress reflection and glare. That is, the display device 11 can suppress the occurrence of reflection and glare even when the high-resolution display 13 is used.
- the display device 11 can be mounted on various electronic devices (not shown).
- the electronic device is, for example, an in-car car navigation system.
- the electronic device is not limited to the car navigation system, and may be an instrument for performing various displays in a car, a car stereo, a television, or the like.
- the electronic device may be a mobile phone, a smart phone, a tablet terminal, a personal computer, or the like.
- the electronic device may be a remote controller.
- the indicator 13 is, for example, a liquid crystal display (LCD) or an organic electroluminescence display (organic EL display).
- the display unit 13 outputs light from many pixels composed of red, blue, and green light.
- the number of pixels of the display 13 having a high resolution is very large.
- the pixel density (resolution) of the display 13 is preferably 100 dpi or more.
- the pixel density (resolution) of the display device 13 is preferably 100 dpi or more and 200 dpi or less.
- Reflection and glare can be effectively suppressed by using the touch panel 12 having irregularities on the front surface 12A and the back surface 12B for the display 13. Also, glare is likely to occur when the gap 14 of the display device 11 is in the range of 1 mm or more and 3 mm or less. However, by using the touch panel 12 having irregularities on the front surface 12A and the back surface 12B as in the present embodiment, the display device 11 having such a gap 14 can be effectively reflected and glare. Can be suppressed.
- the image clarity of the touch panel 12 is preferably 20% or less. Furthermore, the image definition of the touch panel 12 is more preferably 8% or more and 12% or less. The antiglare property of the touch panel 12 can be improved by setting the image definition value within this range.
- the image definition is measured according to JIS K 7374. The image definition can be measured by, for example, a image clarity measuring device ICM-1T manufactured by Suga Test Instruments.
- the standard deviation value of the luminance per unit area when the touch panel 12 is viewed from the front surface 12A is preferably less than 20. With this configuration, it is possible to alleviate discomfort and discomfort due to glare when the operator views the display.
- the luminance per unit area can be measured with a two-dimensional luminance meter.
- the luminance per unit area can be measured by arranging the light source on the back surface 12B side of the touch panel and measuring the in-plane luminance with the light source emitting light. Note that a 400 dpi EL display is used as the light source.
- the luminance per unit area can be measured by, for example, a two-dimensional luminance meter of Komatsu NTC Ltd.
- the distance between the front surface 12A and the back surface 12B is preferably 2 mm or more and 4 mm or less. By setting the distance between the front surface 12A and the back surface 12B within this range, reflection and glare can be effectively suppressed.
- FIG. 2 is a schematic cross-sectional view of the touch panel 12.
- the touch panel 12 includes a resin cover lens 121 and a main body layer 122.
- the cover lens 121 has a front surface 12A and a smooth surface 121A (first smooth surface).
- the front surface 12A is formed on the opposite side to the smooth surface 121A.
- the main body layer 122 has a smooth surface 122A (second smooth surface) and a back surface 12B.
- the back surface 12B is formed on the opposite side to the smooth surface 122A.
- the smooth surface 121 ⁇ / b> A is disposed to face the smooth surface 122 ⁇ / b> A, and the cover lens 121 and the main body layer 122 are bonded together with an adhesive material 124. That is, the touch panel 12 is a laminate of the cover lens 121 and the main body layer 122.
- the cover lens 121 has a substrate 128.
- the front surface 12A and the smooth surface 121A are formed on both sides of the substrate 128.
- the main body layer 122 has a sensor electrode layer 123 on which a sensor electrode 130A is formed.
- the smooth surface 122A and the back surface 12B are formed on both surfaces of the sensor electrode layer 123.
- the sensor electrode layer 123 is formed of a resin film 123A.
- the sensor electrode 130 ⁇ / b> A of the film 123 ⁇ / b> A is disposed on the front surface of the sensor electrode layer 123. That is, the sensor electrode 130 ⁇ / b> A is formed on the smooth surface 122 ⁇ / b> A (second smooth surface) of the main body layer 122.
- the thickness of the film 123A is preferably 20 micrometers or more and 200 micrometers or less. Further, as the film 123A, it is preferable to use a resin for optical use with high light transmittance. As the film 123A, for example, polyester-based, polycarbonate-based, or polyolefin-based resins can be used.
- the main body layer 122 may have an uneven layer 125.
- the cover lens 121 may have an uneven layer 126.
- one surface of the uneven layer 125 is the back surface 12B.
- One surface of the uneven layer 126 is the front surface 12A. That is, unevenness is formed on the main body layer 122 and the cover lens 121 by the uneven layer 125 and the uneven layer 126.
- the main body layer 122 has a smooth surface 122B provided on the opposite side to the smooth surface 122A.
- the cover lens 121 has a smooth surface 121B on the opposite side to the smooth surface 121A. That is, a smooth surface 121B is formed on the front surface of the cover lens 121.
- a smooth surface 122B is formed on the back surface of the sensor electrode layer 123.
- corrugated layer 126 is formed on the smooth surface 121B.
- the uneven layer 125 is formed on the smooth surface 122B.
- the uneven layer 125 and the uneven layer 126 can be formed of a resin containing a filler, for example.
- the uneven layer 125 and the uneven layer 126 are formed by applying a resin containing a filler on the smooth surface 122B and the smooth surface 121B.
- the front surface 12A and the back surface 12B having irregularities with a desired arithmetic average roughness can be formed on the touch panel 12 by adjusting the size of the filler and the like.
- SiO 2 or the like is used as the filler.
- the resin for example, an acrylic resin is used.
- the average interval Sm (Rsm) of the unevenness in the uneven layer 125 is preferably 0.02 mm or more and 0.3 mm or less. Further, as optical characteristics of the uneven layer 125, haze (Hz) is preferably 5% or more and 15% or less, and the transmittance is preferably 85% or more. With this configuration, the glare can be reduced to such an extent that the operation by the operator is not hindered.
- the average interval Sm is an average length of roughness curve elements based on 1994 JISB0601, and is referred to as an average interval Rsm in 2013 JISB0601.
- the average interval Sm (Rsm) of the unevenness in the uneven layer 126 is preferably 0.05 micrometers or more and 0.15 micrometers or less. Further, as the optical characteristics of the uneven layer 126, the haze (Hz) is preferably 1% or more and 10% or less, and the transmittance is preferably 70% or more. With this configuration, the occurrence of reflection can be suppressed.
- the concavo-convex layer 125 and the concavo-convex layer 126 may have a structure having an antireflection film (not shown) on the surface side where the concavo-convex is exposed. With this configuration, the occurrence of reflection can be further suppressed.
- the uneven layer 126 may have a lipophilic or oil-repellent anti-fingerprint treatment layer (not shown) on the uneven surface side. With this configuration, it is possible to suppress fingerprints from adhering to the display surface when the operator touches the display surface to operate.
- the uneven layer 125 may have a lipophilic or oil-repellent anti-fingerprint treatment layer (not shown) on the surface side where the unevenness is exposed. With this configuration, it is possible to suppress fingerprints from being attached to the back surface 12B when the display device 11 is assembled.
- the thickness of the adhesive material 124 is preferably 20 micrometers or more and 150 micrometers or less. Further, as the adhesive material 124, it is preferable to use a resin for optical use with high light transmittance. As the adhesive material 124, for example, an acrylic adhesive material can be used.
- the inventors created the following samples in order to confirm the arithmetic average roughness of the front surface 12A, the arithmetic average roughness of the back surface 12B, and the effect of suppressing glare and reflection by the combination thereof.
- the arithmetic average roughness of the back surface 12B was set to approximately 0, 0.5 micrometers, 0.3 micrometers, 0.06 micrometers, and 0.03 micrometers.
- the arithmetic mean roughness of the front is 0.04 micrometers, 0.06 micrometers, 0.08 micrometers, 0.11 micrometers, 0.13 micrometers, 0.15 micrometers Modified samples were made.
- the back surface is smooth (Table 1).
- Example 2 The arithmetic average roughness of the irregularities on the back is 0.5 micrometers (Table 2).
- Example 1 The arithmetic average roughness of the irregularities on the back is 0.3 micrometers (Table 3).
- Example 2 The arithmetic average roughness of the irregularities on the back is 0.06 micrometers (Table 4).
- Comparative Example 3 The arithmetic average roughness of the irregularities on the back is 0.03 micrometers (Table 5).
- E Excellent is a sample with very good characteristics
- G Good is a good sample
- N No Good is a poor sample.
- Example 1 in Table 3 when the arithmetic average roughness of the back surface 12B is 0.3 micrometers, the arithmetic average roughness of the front surface 12A is 0.08 micrometers to 0.11 micrometers. In between, glare and reflection can be suppressed. Further, a slightly good result is obtained when the arithmetic average roughness of the front surface 12A is 0.06 micrometers and 0.13 micrometers.
- Example 2 of Table 4 when the arithmetic average roughness of the back surface 12B is 0.06 micrometers, the arithmetic average roughness of the front surface 12A is 0.06 micrometers to 0.13 micrometers. It is possible to suppress glare and reflection between meters.
- the arithmetic average roughness of the front surface 12A is 0.06 micrometers or more and 0.13 micrometers or less
- the arithmetic average roughness of the back face 12B is 0.06 micrometers or more and 0.3 micrometers or less. In this case, good characteristics were obtained.
- the sensor electrode layer 123 is not limited to the configuration of the film 123A, and may be configured of a resin film 123A and a resin film 123B as shown in FIG.
- FIG. 3 is a schematic cross-sectional view of another touch panel 16 in the embodiment.
- the touch panel 16 has a main body layer 220 instead of the main body layer 122 of the touch panel 12 shown in FIG.
- the film 123A and the film 123B are bonded together by the adhesive material 124.
- the sensor electrode 130A of the film 123A and the sensor electrode 130B of the film 123B are both arranged on the front side.
- the sensor electrode 130A of the film 123A can detect the position in the direction orthogonal to the direction detected by the sensor electrode 130B of the film 123B.
- the thickness of the films 123A and 123B is preferably 20 micrometers or more and 200 micrometers or less.
- a resin for optical use with high light transmittance As the film 123A and the film 123B, for example, polyester-based, polycarbonate-based, or polyolefin-based resins can be used.
- FIG. 4 is a schematic sectional view of the touch panel 21.
- the touch panel 21 has a main body layer 222 instead of the main body layer 122 of the touch panel 12 shown in FIG.
- the main body layer 222 includes a sensor electrode layer 223 (sensor electrode body) and a film layer 226.
- the film layer 226 has a back surface 12B having irregularities.
- the main body layer 222 is a laminate of the sensor electrode layer 223 and the film layer 226.
- the sensor electrode layer 223 has a smooth surface 223A instead of the smooth surface 122B of the sensor electrode layer 123 shown in FIG. That is, the smooth surface 223A is formed on the opposite side to the smooth surface 122A.
- the unevenness of the film layer 226 may be formed by the uneven layer 125.
- a smooth surface 122B is formed on the back side of the film layer 226.
- the film layer 226 has a smooth surface 226A on the side opposite to the smooth surface 122B.
- the smooth surface 226A is disposed to face the smooth surface 223A.
- the smooth surface 226 ⁇ / b> A and the smooth surface 223 ⁇ / b> A are bonded together with an adhesive material 124.
- the film layer 226 may be a polarizing plate, for example. With this configuration, it is possible to reduce surface reflection and increase the visibility of the display.
- FIG. 5 is a schematic cross-sectional view of the touch panel 31.
- the touch panel 31 does not include the cover lens 121 included in the touch panel 21 illustrated in FIG. 4 and the adhesive material 124 between the cover lens 121 and the main body layer 222.
- the touch panel 31 has the main body layer 322 instead of the main body layer 222 shown in FIG.
- the main body layer 322 includes a sensor electrode layer 323 and a film layer 226.
- the main body layer 322 has a front surface 12A. That is, the uneven layer 126 is formed on the front surface of the sensor electrode layer 323.
- the main body layer 322 includes a film 323A and a film 323B. Note that the film 323 ⁇ / b> A and the film 323 ⁇ / b> B are bonded together with an adhesive material 124. In this case, the sensor electrodes 130A and 130B are wired on the film 323A and the back surface of the film 323B.
- FIG. 6 is a schematic sectional view of the touch panel 41.
- the main body layer 422 of the touch panel 41 has a sensor electrode layer 323.
- the sensor electrode layer 323 is formed of a film 323A.
- An uneven layer 126 is formed on the front surface of the sensor electrode layer 323.
- An uneven layer 125 is formed on the back surface of the sensor electrode layer 323.
- the main body layer 422 has a front surface 12A and a back surface 12B. That is, in the touch panel 41, uneven layers are formed on the upper and lower surfaces of one electrode layer.
- the sensor electrode 130 ⁇ / b> C is formed not in the surface of the sensor electrode layer 323 but in a recess (concave portion) formed in the sensor electrode layer 323. Not only the configuration shown in FIG. 2 but also the configurations shown in FIGS. 3 to 6 can suppress glare and reflection.
- the back surface is disposed toward the display, light can be scattered on the back surface. Therefore, it can suppress that the light output from the indicator concentrates on a certain area
- the touch panel according to the present disclosure has an effect of suppressing reflection and preventing glare, and is particularly useful in an electronic device or the like mounted on a mobile device such as an automobile.
- Display device Touch panel 12A Front surface (first surface) 12B Rear side (second side) DESCRIPTION OF SYMBOLS 13 Display 14 Air gap 16 Touch panel 21 Touch panel 31 Touch panel 41 Touch panel 121 Cover lens 121A Smooth surface 121B Smooth surface 122 Main body layer 122A Smooth surface 122B Smooth surface 123 Sensor electrode layer 123A Film 123B Film 124 Adhesive material 125 Uneven layer 126 Uneven layer 128 Substrate 130A, 130B, 130C Sensor electrode 220 Body layer 222 Body layer 223 Sensor electrode layer 223A Smooth surface 226 Film layer 226A Smooth surface 322 Body layer 323 Sensor electrode layer 323A Film 323B Film 422 Body layer
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Abstract
Description
図1は、表示装置11の概略断面図である。表示装置11は、タッチパネル12と、表示器13とを有している。タッチパネル12は、表示器13の前面側に配置されている。なお、表示器13の前面が発光する面である。表示器13は、赤、緑、青の色の光を前面へ出力する。タッチパネル12は、表示器13に対して空隙14を介して配置されている。
(比較例1)
背面が平滑である(表1)。
(比較例2)
背面の凹凸の算術平均粗さが、0.5マイクロメートルである(表2)。
(実施例1)
背面の凹凸の算術平均粗さが、0.3マイクロメートルである(表3)。
(実施例2)
背面の凹凸の算術平均粗さが、0.06マイクロメートルである(表4)。
(比較例3)
背面の凹凸の算術平均粗さが、0.03マイクロメートルである(表5)。
12 タッチパネル
12A 前面(第1面)
12B 背面(第2面)
13 表示器
14 空隙
16 タッチパネル
21 タッチパネル
31 タッチパネル
41 タッチパネル
121 カバーレンズ
121A 平滑面
121B 平滑面
122 本体層
122A 平滑面
122B 平滑面
123 センサ電極層
123A フィルム
123B フィルム
124 粘着材
125 凹凸層
126 凹凸層
128 基板
130A,130B,130C センサ電極
220 本体層
222 本体層
223 センサ電極層
223A 平滑面
226 フィルム層
226A 平滑面
322 本体層
323 センサ電極層
323A フィルム
323B フィルム
422 本体層
Claims (15)
- 第1面と、
前記第1面と反対側の第2面と、
を有し、
前記第1面の算術平均粗さは、0.06マイクロメートル以上、0.13マイクロメートル以下であり、
前記第2面の算術平均粗さは、0.06マイクロメートル以上、0.3マイクロメートル以下である、
タッチパネル。 - 前記第1面の算術平均粗さは、前記第2面の算術平均粗さ以上である
請求項1に記載のタッチパネル。 - 一方の面に前記第1面が形成され、前記第1面と反対側に第1の平滑面が形成された樹脂製のカバーレンズと、
前記第1の平滑面に貼り付けられた第2の平滑面と、前記第2の平滑面と反対側に前記第2面が形成された、本体層と、
を有する、
請求項1に記載のタッチパネル。 - 前記本体層は樹脂で形成されており、前記本体層の前記第2の平滑面にはセンサ電極が形成されている
請求項3に記載のタッチパネル。 - 前記本体層は、
前記第2の平滑面と反対側に設けられた第3の平滑面と、
前記平滑面上に設けられ、前記第2面が形成された凹凸層と、
を有する、
請求項3に記載のタッチパネル。 - 前記凹凸層は、フィラーを含む樹脂によって形成されている
請求項5に記載のタッチパネル。 - 前記本体層は、
センサ電極を有する樹脂性のフィルムを2枚積層することにより形成されている
請求項3に記載のタッチパネル。 - 前記本体層は、
センサ電極を有する樹脂性のフィルムを2枚積層したセンサ電極体と、
フィルム層との積層体である
請求項3に記載のタッチパネル。 - 前記フィルム層は、偏光板である
請求項8に記載のタッチパネル。 - JIS K 7374に準拠して測定された像鮮明度は、8%以上、12%以下であり、かつ、前記第1面側から見た場合の輝度の標準偏差値は、20未満である、
請求項1に記載のタッチパネル。 - 前記第1面と、前記第2面との間の距離は、2mm以上、4mm以下である、
請求項1に記載のタッチパネル。 - 算術平均粗さが、0.06マイクロメートル以上、0.13マイクロメートル以下である第1面と、
算術平均粗さが、0.06マイクロメートル以上、0.3マイクロメートル以下であり、前記第1面と反対側の第2面と、
を有するタッチパネルと、
前記タッチパネルの前記第2面と空隙を介して、対向するように配置された表示器と、
を備えた表示装置。 - 前記第1面の算術平均粗さは、0.08マイクロメートル以上、0.11マイクロメートル以下である
請求項12に記載の表示装置。 - 前記空隙は、1mm以上、3mm以下である
請求項12に記載の表示装置。 - 前記表示器の解像度は、100dpi以上、200dpi以下である
請求項12に記載の表示装置。
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US15/526,490 US20180059833A1 (en) | 2015-12-25 | 2016-11-24 | Touch panel and display device using the same |
JP2017521259A JPWO2017110038A1 (ja) | 2015-12-25 | 2016-11-24 | タッチパネルと、これを用いた表示装置 |
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