JP7271114B2 - Display device - Google Patents

Description

The present invention relates generally to display devices, and more particularly to display devices with touch sensors.

2. Description of the Related Art In recent years, display devices in which a touch sensor is built in a video display device such as a liquid crystal display device, a plasma display device, an electroluminescent display device and an organic light emitting display device are becoming popular. These touch sensor-equipped display devices display various button images, etc., and by directly touching the screen with a finger or pen while looking at the display device, the user can input information instead of normal buttons. do.

Among such touch sensor-equipped display devices, flexible display devices have recently attracted particular attention as bendable or bendable next-generation electronic display devices.

In order to protect the touch sensor layer on top of the image display surface of a flexible display device that can be bent or bent, a flexible front film is needed to replace the conventional glass cover. As the front film, transparent polyimide resin, which is thin but has high hardness, as described in Patent Document 1 is generally used.

In addition, in order to protect the touch sensor layer and the display panel of the display device from the impact applied to the image display surface, in the conventional display device, a front film is attached to the side of the display panel opposite to the image display surface side. It also has a back film made of a material with a low elastic modulus.

U.S. Patent Application Publication No. 2016/0040027

However, a display device having a conventional configuration that satisfies all of the following conditions has not been realized. To prevent display failure of the display element due to impact, to prevent scratches from remaining on the surface, and to easily restore the original flat state after being deformed.
For example, if a high-hardness transparent polyimide resin is used as the front film without providing a flexible back film as the lower layer, the surface is less likely to be scratched, but it is difficult to protect the display element from impact, and the impact resistance is increased. less sexual. Also, if a flexible back film is provided as the lower layer, the impact resistance is improved, but the surface is easily scratched. Moreover, when a transparent polyimide resin having a high hardness is used for the front film, it is difficult to restore the original flat state after being deformed. Therefore, when a pen or the like is pressed against the surface, the display device may be dented or cracked.

Therefore, the present invention provides a display device that can be easily restored to its original flat state even if the display device is deformed, that even if the surface is scratched, the scratches are less likely to remain, and that the shock absorbing ability is improved, and the display device can be easily affected by impact. It is an object of the present invention to provide a display device capable of reducing display defects.

A display device of the present disclosure includes a support layer, a display panel provided on the support layer and including an organic light-emitting element, a touch sensor layer provided on the display panel for detecting a touch position, and the touch sensor layer. and an elastomer layer formed on the outer surface positioned as the outermost layer on the sensor layer, wherein the elastic modulus of the support layer is higher than the elastic modulus of the elastomer layer.

According to the present invention, there is provided a flexible display device that can be easily restored to its original flat state even if the display device is deformed, that scars are less likely to remain on the surface, and that display defects due to impact can be prevented.

FIG. 1 is a schematic cross-sectional view of the display device according to the first embodiment. FIG. 2 is a schematic exploded top view of the display device according to the first embodiment. FIG. 3 is a schematic cross-sectional view of the display device according to the first embodiment. FIG. 4 is a schematic cross-sectional view of the display device according to the second embodiment. FIG. 5 is a schematic cross-sectional view of a measuring device for evaluating impact resistance, characteristics of restoring the original flat state even when the display device is deformed, and reduction of surface scratches.

[First embodiment]
FIG. 1 shows a schematic cross-sectional view of a display device 1 according to the first embodiment. In addition, in this disclosure, each drawing is a schematic diagram for explanation, and is not to scale. In particular, many repetitive elements are shown in greatly reduced numbers for clarity of illustration.

The display device 1 includes a support layer, a display panel provided on the support layer and including an organic light-emitting element, a touch sensor layer provided on the display panel and detecting a touch position, and an uppermost layer on the touch sensor layer. It is provided with an elastomer layer formed on the outer surface positioned on the outer layer, and constitutes a display screen of a terminal with a touch sensor function such as a smart phone or a tablet computer.

The elastomer layer 15 is the front film of the display device 1 . That is, the elastomer layer 15 is the outermost layer on the light exit side of the display device 1 . The elastomer layer 15 is made of a polymeric material having high transparency and remarkable elasticity.

The elastic modulus of the elastomer layer 15 is preferably 1 GPa or less. When the elastic modulus of the elastomer layer 15 is 1 GPa or less, the display device can be sufficiently restored to its original flat state even when the display device is deformed and has sufficient impact resistance. Elastic modulus can be measured, for example, by a method according to JIS K7161.

The film thickness of the elastomer layer 15 is preferably 50 μm or more. If the film thickness of the elastomer layer 15 is 50 μm or more, deformation of the touch sensor layer 14 and the display panel 12 due to external pressing force can be sufficiently suppressed. The film thickness of the elastomer layer is more preferably 200 μm or more, more preferably 400 μm or more. In addition, in order to prevent the flexibility of the display device 1 from being excessively thickened and the portability and design of the display device 1 to be degraded, the thickness of the elastomer layer 15 is set to 800 μm or less. is preferably

The material of the elastomer layer 15 is not limited as long as it is a high-molecular substance having high transparency and remarkable elasticity, but is preferably a thermosetting elastomer, and more preferably a thermosetting resin-based elastomer. and more preferably a three-dimensional chemically crosslinked polymer.
Specifically, the elastomer layer 15 is preferably made of polyurethane or silicone because of its high strength.

The material of the elastomer layer 15 may contain substances other than elastomers, and may contain additives such as wax particles and silica particles. For example, at least one of an acrylate compound and a methacrylate compound may be included in the elastomer layer 15 . In this case, the total content of acrylate compounds and methacrylate compounds in elastomer layer 15 is preferably 5% by mass or less.

The support layer 11 is a base material that forms a housing of the display device 1 . Therefore, the support layer 11 is formed of a material capable of providing characteristics such as impact resistance and flexibility generally required for a housing of a flexible display device. Further, the support layer 11 supports the touch sensor layer 14 and the display panel 12 from the side opposite to the image display surface side of the display device 1, and the touch sensor layer 14 is supported by a pressing force applied to the image display surface from the outside. and suppress deformation of the display panel 12 . Therefore, the modulus of elasticity of the support layer 11 is higher than that of the elastomer layer 15 .
In this embodiment, the support layer 11 shows a display device that is a base material that serves as a housing of the display device, but the form of the support layer 11 is not limited to this. Any layer can be used as the support layer as long as it is provided on the side opposite to the image display surface side of the display device so as to face the display panel and has a higher elastic modulus than the elastomer layer. For example, a liquid crystal panel may be used as the display panel, and a light guide plate having a sidelight may be used as the support layer.

The display panel 12 is an OLED panel that includes a plurality of pixels having thin film transistors and organic light-emitting diodes (hereinafter referred to as “OLEDs”), which are organic light-emitting elements. In this embodiment, an example in which the display panel 12 is an OLED panel is shown, but the display panel may be a panel having a function of displaying other images. For example, it may be a display panel including micro LEDs and their driving circuits, or a liquid crystal panel including a light source and a liquid crystal layer. Further, the display panel may or may not include thin film transistors.

The touch sensor layer 14 constitutes a projected capacitive touch sensor. That is, the touch sensor layer 14 constitutes a touch sensor surface composed of a plurality of two-dimensionally arranged touch sensor electrodes, and detects a touch position. In the present embodiment, an example in which the touch sensor layer 14 constitutes a projected capacitive touch sensor is shown, but the touch sensor layer is limited to any structure as long as it has a function as a so-called touch panel. not. For example, the touch sensor layer includes touch panels of a resistive film type, a surface capacitive type, and an electromagnetic induction type.
The elastomer layer 15 and the touch sensor layer 14, the touch sensor layer 14 and the sealing layer 13, and the display panel 12 and the support layer 11 may be laminated with an adhesive interposed therebetween.

FIG. 2 is a schematic exploded top view of the active region of the display device 1 according to the first embodiment of the invention.

The display panel 12, the sealing layer 13, the touch sensor layer 14 and the elastomer layer 15 are laminated in this order on the support layer 11, and part of each layer is shown in FIG. In the following description, the directions of the two sides defining the display surface of the display device 1 are referred to as the X direction and the Y direction, respectively, and the direction perpendicular to the display surface (that is, the direction perpendicular to the XY plane) is the Z direction. called direction. Moreover, in the present disclosure, the expressions “upper (or upper layer)” or “lower (or lower layer)” do not limit the positional relationship in actual use. However, for convenience of explanation, the “up” direction means the direction from support layer 11 toward elastomer layer 15 , and the “down” direction means the direction from elastomer layer 15 toward support layer 11 .

As described above, the display panel 12 included in the display device 1 is an OLED panel and has a substrate 12a and a pixel electrode layer 12b. The pixel electrode layer 12b constitutes a pixel surface having a plurality of pixels PX arranged two-dimensionally on the substrate 12a. The plurality of pixels PX include red (R) pixels, green (G) pixels, blue (B) pixels and white (W) pixels, and are arranged in a matrix according to a predetermined arrangement rule. As will be described later in detail, in the present embodiment, each pixel PX of the pixel electrode layer 12b is composed of an OLED, which is an organic light-emitting element utilizing organic electroluminescence (organic EL). Each pixel PX is connected to a drive control circuit (not shown) for drive control of the OLED.

In this embodiment, the pixel PX is provided with a light emitting element 122 emitting red light, a light emitting element 122 emitting green light, a light emitting element 122 emitting blue light, and a light emitting element 122 emitting white light. However, the light emitting element structure of the pixel PX is not limited to this. For example, a configuration may be adopted in which all the light emitting elements 122 emit the same color (for example, white or blue) and a necessary color filter or color conversion layer is added for each pixel PX. Further, in each pixel PX, even if a SOLED (transparent stacked OLED) configuration in which a red-light-emitting organic EL layer, a green-light-emitting organic EL layer, and a blue-light-emitting organic EL layer are stacked via a protective layer is adopted as the light-emitting element 122. good. In this case, the configuration of the drive circuit for the light emitting element 122 is also changed as appropriate.

The sealing layer 13 is a multi-layer protective layer that blocks penetration of moisture, oxygen, and the like into the pixel electrode layer 12b. That is, the sealing layer 13 has a sealing function with respect to the pixel electrode layer 12b. In addition, the sealing layer 13 may have a planarization function of planarizing unevenness on the upper surface of the pixel electrode layer 12b.

The touch sensor layer 14 includes multiple X electrode rows 141 and multiple Y electrode rows 142 . A plurality of X electrode rows 141 are arranged parallel to the X direction, and a plurality of Y electrode rows 142 are arranged parallel to the Y direction. Each X electrode row 141 includes a plurality of X electrodes 1411 (touch sensor electrodes) connected via bridges 1412 in the Y direction, and each Y electrode row 142 includes a plurality of Y electrodes connected via bridges 1422 in the X direction. It includes electrodes 1421 (touch sensor electrodes). The plurality of X electrodes 1411 and the plurality of Y electrodes 1421 are arranged to alternately cover different portions of the active region in the XY plan view. The bridge 1412 and the bridge 1422 intersect in the XY plan view and are insulated from each other in the Z direction via an insulating film (not shown). In other words, the X layer including the multiple X electrode arrays 141 and the Y layer including the multiple Y electrode arrays 142 form two layers that are insulated from each other via an insulating film having a predetermined capacitance. do. Each X electrode column 141 and each Y electrode column 142 are connected to a detection processing circuit (not shown) for touch operation detection via each wiring W connected to one end of each row or each column. The electrodes included in the pixel electrode layer 12b, the touch sensor layer 14, and the like may be transparent conductive films such as ITO and IZO, for example.

FIG. 3 shows a partial schematic cross-sectional view of the display device 1 of this embodiment. As described above, the display device 1 includes the display panel 12, the sealing layer 13, the touch sensor layer 14, and the elastomer layer 15 which are laminated in order on the support layer 11 as a base material that serves as a housing. 3 shows the display panel 12 near the light emitting element 122, and the touch sensor layer 14 near the Y electrode 1421, the bridge 1412 and the bridge 1422 (see FIG. 2).

The pixel electrode layer 12b includes a driving element 121 and a light emitting element 122 (OLED).
In the driving element 121, a gate electrode 2211 and a gate insulating film 1212 are formed on a substrate 12a such as a silicon-based substrate so as to cover the gate electrode 2211. As shown in FIG. A semiconductor layer 1213 is formed in a predetermined region covering the gate electrode 2211 on the gate insulating film 1212 . A protective film 1214 is formed on the semiconductor layer 1213 , and a drain electrode 1215 and a source electrode 1216 are formed on the protective film 1214 to reach the semiconductor layer 1213 through the protective film 1214 . A protective film 1217 covering the protective film 1214, the drain electrode 1215 and the source electrode 1216 is formed.

In the light-emitting element 122 , an anode electrode 1221 is formed on the protective film 1217 , and the anode electrode 1221 is connected to the source electrode 1216 through the protective film 1217 on the source electrode 1216 . An organic light-emitting layer 1222 (organic EL layer) is formed on the anode electrode 1221 , and a cathode electrode 1223 is formed on the organic light-emitting layer 1222 . A bank 2224 as a spacer is partially formed between the anode electrode 1221 and the cathode electrode 1223 in the organic light emitting layer 1222 .

The sealing layer 13 includes an inorganic material layer 131, an organic material layer 132, and an inorganic material layer 133 on the cathode electrode 1223 from the bottom. 1222) from being reached. The inorganic material layer 131 is formed of an inorganic insulating material such as silicon nitride (SiN _x ), silicon oxide (SiO _x ), silicon oxynitride (SiON), or aluminum oxide (Al ₂ O ₃ ), which can be deposited at a low temperature. be. This inorganic material is selected so that the sealing layer 13 can be formed by a process that does not thermally affect the organic light-emitting layer 1222 with low heat resistance. The organic material layer 132 is made of an organic material such as acrylic resin, epoxy resin, polyimide, polyethylene, or silicon oxycarbon (SiOC). The relatively flexible organic material layer 132 serves to relieve stress that may occur between the inorganic material layers 131 and 133 . The inorganic material layer 133 is formed of an inorganic material such as silicon nitride (SiN _x ), silicon oxide (SiO _x ), silicon oxynitride (SiON), or aluminum oxide (Al ₂ O ₃ ).

In this embodiment, the sealing layer 13 has the inorganic material layer 131, the organic material layer 132, and the inorganic material layer 133 arranged in this order, but the arrangement of the organic material and the inorganic material is not limited to this. For example, the sealing layer 13 may be a layer in which four or more organic material layers and inorganic material layers are laminated in total. Further, the display device 1 may be configured without the sealing layer 13 .

A touch sensor layer 14 is formed on the encapsulation layer 13 . An insulating film 143 and a bridge 1422 are formed on the sealing layer 13, and a bridge 1412 is formed on the bridge 1422 with the insulating film 144 interposed therebetween. Y electrode 1421 is formed on insulating film 143 with insulating film 144 and bridge 1412 interposed therebetween, and is connected to bridge 1422 through a contact hole on the side of insulating film 144 . A touch protection film 145 is formed on the Y electrode 1421 , the insulating film 144 and the bridge 1412 .

Since the display device 1 has the elastomer layer 15 made of a highly elastic material as the front film, the display device can be easily restored to its original planar state even if it is deformed. Also, even if the surface is scratched, the scratch is less likely to be restored and remain. In the display device 1 , the surface of the display panel 12 opposite to the surface facing the touch sensor layer 14 faces the support layer 11 having a higher elastic modulus than the elastomer layer 15 . That is, when viewed from the image display surface of the display device 1, the display panel 12 and the touch sensor layer 14 have an elastomer layer on the surface, and the back surface is supported by the support layer 11 having a higher elastic modulus than the elastomer layer 15. configuration. Therefore, deformation caused by a pressing force partially applied to the image display surface from the outside mainly occurs in the elastomer layer. As a result, it is possible to suppress deformation of the display panel 12 and the touch sensor layer 14 caused by an external pressing force, so that the display device 1 has excellent impact resistance.

Since the display device 1 has sufficient impact resistance by including the elastomer layer 15 as a front film, it is possible to omit the provision of a back film layer, which a conventional display device has for providing impact resistance. can. This simplifies the configuration of the display device 1, thereby reducing manufacturing costs and energy.

[Second embodiment]
FIG. 4 is a schematic cross-sectional view of a display device 2 according to a second embodiment of the invention. The support layer 21 of the display device 2 is a back film layer that is placed between a base material 22 serving as a housing of the display device 2 and the display panel 12 and has a function of absorbing physical shock. The display device 2 according to the second embodiment of the invention is similar to the display according to the first embodiment of the invention, except that the support layer 21 is a back film layer and the display panel 12 is provided with the support layer 21 under the display panel 12 . It has the same configuration as the device 1 .

Like the display device according to the first embodiment, the display device 2 has an elastomer layer on the surface and a back surface supported by a support layer 21 having a higher elastic modulus than the elastomer layer 15. Even if the display device is deformed, it can be easily restored to its original flat state, the surface is less likely to be scratched, and it is excellent in impact resistance. Further, in the display device 2 according to the present embodiment, by providing the support layer 21 as a back film layer, the impact resistance can be improved compared to a display device having no back film layer.

As described above, when the display device has the elastomer layer as the front film, the display device can be restored to its original flat state even if it is deformed, reduce surface scratches, and have excellent impact resistance. can. Here, a test device reflecting the display device was produced, and impact resistance, properties of restoring the original flat state even when the display device was deformed, and reduction of surface scratches were evaluated. FIG. 7 shows a schematic cross-sectional view of the measuring device. The test device 5 has a back film layer 52, a panel layer 53 and a front film layer 54 laminated in this order on a substrate 51. FIG. In FIG. 7, the panel layer reflects the combined layers of the display panel and the touch sensor layer of the display device. Using the apparatus shown in FIG. 7, the impact resistance was tested by a ball drop test, and the characteristics of restoring the display device to its original flat state even after being deformed by a pen push test and a pencil hardness test, and the reduction of surface scratches were evaluated as follows. and evaluated.

[Example 1]
A stainless plate having a thickness of 5 mm was used as the base material 51 . As the panel layer 53, a pressure-sensitive polyethylene terephthalate (PET) film with a thickness of 100 μm was used in the ball drop test, and an aluminum foil with a thickness of 100 μm was used in the pen pressure test and the pencil hardness test. Polyurethane having a thickness of 400 μm was used as the front film layer 54, and the back film layer 52 was not used. That is, in Example 1, a pressure-sensitive PET film corresponding to the panel layer 53 was placed directly on the stainless steel plate as the base material 51 . Thus, a test device according to Example 1 was produced.

[Example 2, Comparative Examples 1 to 6]
Test apparatuses according to Example 2 and Comparative Examples 1 to 6 were produced with the same configuration as in Example 1, except that the materials used for the front film layer 54 and the back film layer 52 were changed as shown in Table 1.
The details of the materials of the front film layer 54 and the back film layer 52 used in Examples and Comparative Examples shown in Table 1 are as follows.
PU: Polyurethane rubber with a hardness of A95 as specified in JIS K 6253 and ISO 7619.
HC: A hard coat film (trade name: SHC40N50M, manufactured by Daicel), which is a film obtained by forming a hard coat layer (40 μm thick) made of an acrylic resin on a polyethylene naphthalate film (50 μm thick).
PET: Polyethylene terephthalate (trade name: A4300, manufactured by Toyobo).
Cushion: Polyurethane foam (trade name: ISR-TUF-RP, manufactured by Iwatani Corporation).
In each film, HC has the highest elastic modulus, followed by PET, PU and cushion.

<Ball drop test>
A ball drop test was conducted as follows using the test apparatus according to Examples 1 and 2 and Comparative Examples 1 to 6 to evaluate impact resistance.

An iron ball with a weight of 22 g was dropped onto the front film layer 54 to check for appearance changes such as cracks in the front film layer 54 and for dents in the polyethylene terephthalate (PET) film corresponding to the panel layer. At this time, the test was conducted by changing the height from which the iron ball was dropped to 5 cm, 10 cm, 20 cm, 30 cm and 40 cm. A: Cases where no changes in appearance such as cracks occurred in the front film layer and no dents in the polyethylene terephthalate (PET) film corresponding to the panel layer, and cases where changes in appearance such as cracks occurred in the front film layer , and the case where the polyethylene terephthalate (PET) film corresponding to the panel layer was dented was evaluated as B. Table 2 shows the evaluation results.

<Pen press test>
Using the test apparatus according to Examples 1 and 2 and Comparative Examples 1 to 6, a pen-pressing test was performed as follows to evaluate the characteristics of restoring the original flat state even if the display device was deformed and the reduction of surface scratches. bottom.

A pencil with a hardness of 9H was pressed against the front film layer at an angle of 45 degrees under the condition of a load of 750 g. A: When there was no change in appearance such as cracks in the front film layer and no dents in the aluminum foil corresponding to the panel layer. It was evaluated as B when a dent occurred. When the front film layer was cracked, the length of the crack was measured, and when the panel layer was dented, the depth of the dent was measured. Table 3 shows the evaluation results.

Using the test apparatus according to Examples 1 and 2 and Comparative Examples 1 to 6, a pencil hardness test was performed as follows to evaluate the characteristics of restoring the original flat state even if the display device was deformed and the reduction of surface scratches. bottom.

A pencil with a hardness of 9H was pressed against the front film layer at an angle of 45 degrees under the condition of a load of 750 gf, and the test apparatus was moved at a relative speed of 300 mm/min with respect to the pencil. A: When there was no change in appearance such as cracks in the front film layer and no dents in the aluminum foil corresponding to the panel layer. It was evaluated as B when a dent occurred. When the aluminum foil corresponding to the panel layer was dented, the depth of the dent was measured. Table 4 shows the evaluation results.

The test apparatus according to Example 1, which has a front film layer made of PU as an elastomer layer, and a base material made of a stainless steel plate as a support layer having a higher elastic modulus than the elastomer layer, and PU as the elastomer layer. The test device according to Example 2, which has a formed front film layer and a back film layer made of PET as a support layer having a higher modulus than the elastomer layer, reflects a display device according to the present invention. . From Tables 2 to 4, the display devices reflected by the test devices according to these Examples 1 and 2 have excellent impact resistance, characteristics to restore the original flat state even if the display device is deformed, and reduction of surface scratches. I understand.

A test apparatus according to Comparative Example 1 having a hard front film layer formed of a hard coat film and a back film layer formed of PU having a lower elastic modulus than the front film layer, and a hard coat film The test device according to Comparative Example 2, which has a front film layer with a high hardness and a back film layer formed of a cushion having a lower elastic modulus than the front film layer, reflects a display device having a conventional configuration. there is From Table 2, it can be seen that the display devices reflected by the test devices according to Examples 1 and 2 have excellent impact resistance. However, referring to Tables 3 and 4, the display devices reflected by the test devices according to Examples 1 and 2 do not have sufficient characteristics to restore the original flat state even if the display device is deformed and the reduction of surface scratches is not sufficient. It can be seen that the partially applied pressing force caused a crack in the front film layer and a dent in the panel layer.

In the test devices according to Comparative Examples 3 and 4, the front film layer is an elastomer layer made of PU, but does not have a support layer below the panel layer having a higher elastic modulus than the elastomer layer. Instead of the support layer having a higher elastic modulus than the elastomer layer, Comparative Example 3 provided a back film layer having the same elastic modulus as the elastomer layer, and Comparative Example 4 provided a back film layer having a lower elastic modulus than the elastomer layer. ing. As a result, the back film layer was deformed to the same extent or more than the front film layer due to external pressing force, and as a result, the panel layer was damaged in all tests.

Furthermore, compared to Comparative Examples 1 and 2, the test devices according to Comparative Examples 5 and 6, which had a back film layer having a high elastic modulus, did not have sufficient impact resistance, and even if the display device was deformed, The ability to restore the original flat state and the reduction of surface scratches were also insufficient.

From the above results, it can be seen that the display device according to the present invention is excellent not only in the impact resistance but also in the property of restoring the original planar state even if the display device is deformed.

1, 2 display device 11, 21 support layer 12 display panel 13 sealing layer 14 touch sensor layer 15 elastomer layer 12a substrate 12b pixel electrode layer 1411 X electrode (touch sensor electrode)
1421 Y electrode (touch sensor electrode)
22, 51 base material 5 test device 52 back film layer 53 panel layer 54 front film layer PX pixel

Claims (9)

a support layer;
a display panel provided on the support layer and including an organic light emitting device;
A touch sensor layer provided on the display panel and detecting a touch position;
an elastomer layer formed on the outer surface positioned as the outermost layer on the touch sensor layer,
The elastic modulus of the support layer is higher than the elastic modulus of the elastomer layer,
The elastomer layer is formed from a three-dimensional chemically crosslinked polymer,
The elastomer layer is made of polyurethane,
The support layer is
a flat portion in contact with the back surface of the display panel;
a side wall portion connected to the flat portion and in contact with respective side surfaces of the display panel, the touch sensor layer, and the elastomer layer;
has
The upper surface of the elastomer layer and the upper surface of the side wall form a flat surface,
A flexible display device characterized by: 2. The display device according to claim 1, wherein said support layer is a base material that serves as a housing of said display device. 2. The display device according to claim 1, wherein said support layer is provided between said display panel and a base material serving as a housing of said display device. The display device according to any one of claims 1 to 3, wherein the elastic modulus of the elastomer layer is 1 GPa or less. 5. The display device according to claim 1, wherein the elastomer layer has a film thickness of 50 [mu]m or more. 6. The display device according to any one of claims 1 to 5, wherein the support layer is made of any one of stainless steel, polyethylene terephthalate, and aluminum. 7. The display device according to any one of claims 1 to 6, further comprising an encapsulation layer between said display panel and said touch sensor layer. 8. A display device according to any preceding claim, wherein the touch sensor layer constitutes a projected capacitive touch sensor. wherein the elastomer layer contains an additive of at least one of an acrylate compound and a methacrylate compound;
The display device according to any one of claims 1 to 8, wherein the content of the additive is 5% by mass or less.

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