JP2016057885A - Electronic device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an easy-to-use electronic device.SOLUTION: An electronic device includes a display section, first and second components, and first and second adhesion sections. The display section has a display surface and a rear surface which is opposite the display surface. The display surface includes a central area having a touch input function, and a peripheral area around the central area. The first component faces the rear surface and overlaps the central area. The second component faces the rear surface and overlaps the peripheral area. The first adhesion section causes the rear surface and the first component to adhere to each other. The second adhesion section causes the rear surface and the second component adhere to each other. The second adhesion section includes at least one of a second area ratio different from a first area ratio of the first adhesion section, and a second Young's modulus different from a first Young's modulus of the first adhesion section. The first area ratio is a ratio of the area of the first adhesion section in a plane parallel to the display surface, with respect to a unit area. The second area ratio is a ratio of the area of the second adhesion section in the plane, with respect to the unit area.SELECTED DRAWING: Figure 1

Description

  Embodiments described herein relate generally to an electronic apparatus.

  For example, there is a portable electronic device having a communication function. Such electronic devices are required to have resistance to impacts such as dropping. It becomes easy to use by improving tolerance. On the other hand, the display unit of the electronic device is provided with a touch input function. In this case, ease of touch input is required. Improvements in impact resistance, ease of touch input and ease of use are desired.

JP2012-123224A

  Embodiments of the present invention provide an electronic device that is easy to use.

  According to the embodiment of the present invention, the electronic device includes a display unit, a first component, a second component, a first bonding unit, and a second bonding unit. The display unit includes a display surface and a back surface opposite to the display surface. The display surface includes a central region having a touch input function and a peripheral region around the central region. The first component faces the back surface and overlaps the central region. The second component faces the back surface and overlaps the peripheral region. The first adhesive portion is provided between the back surface and the first component, and bonds the back surface and the first component. The second adhesive portion is provided between the back surface and the second component, and bonds the back surface and the second component. The second adhesive part has at least one of a second area ratio different from the first area ratio of the first adhesive part and a second Young's modulus different from the first Young's modulus of the first adhesive part. Have. The first area ratio is a ratio of an area of the first adhesive portion in a plane parallel to the display surface to a unit area. The second area ratio is a ratio of the area of the second adhesive portion in the plane to the unit area.

FIG. 1A to FIG. 1C are schematic views illustrating the electronic apparatus according to the first embodiment. 1 is a schematic cross-sectional view illustrating a part of an electronic apparatus according to a first embodiment. 1 is a schematic plan view illustrating a part of an electronic device according to a first embodiment. FIG. 4A and FIG. 4B are graphs illustrating characteristics of the electronic device according to the first embodiment. FIG. 6 is a schematic plan view illustrating a part of an electronic device according to a second embodiment. FIG. 6 is a schematic plan view illustrating a part of an electronic device according to a third embodiment.

Embodiments of the present invention will be described below with reference to the drawings.
The drawings are schematic or conceptual, and the relationship between the thickness and width of each part, the size ratio between the parts, and the like are not necessarily the same as actual ones. Further, even when the same part is represented, the dimensions and ratios may be represented differently depending on the drawings.
Note that, in the present specification and each drawing, the same elements as those described above with reference to the previous drawings are denoted by the same reference numerals, and detailed description thereof is omitted as appropriate.

(First embodiment)
FIG. 1A to FIG. 1C are schematic views illustrating the electronic apparatus according to the first embodiment. FIG. 1A is a plan view. FIG. 1B is a cross-sectional view taken along line A1-A2 of FIG. FIG. 1C is a cross-sectional view taken along line B1-B2 of FIG. Fig.1 (a) is a top view when it sees from the arrow AR shown in FIG.1 (b).

  As shown in FIG.1 (b), the electronic device 110 which concerns on embodiment is the display part 10, the 1st component 21, the 2nd component 22, the 1st adhesion part 31, the 2nd adhesion part 32, including.

  The direction from the first component 21 toward the display unit 10 is taken as the Z-axis direction. One direction perpendicular to the Z-axis direction is taken as an X-axis direction. A direction perpendicular to the Z-axis direction and the X-axis direction is taken as a Y-axis direction.

  The display unit 10 includes a display surface 10a and a back surface 10b. The back surface 10b is a surface opposite to the display surface 10a. Information is displayed on the display surface 10a. The display surface 10a is substantially perpendicular to the Z-axis direction. The display surface 10a is substantially parallel to the XY plane.

  In this example, the display unit 10 has a touch input function. The user views information displayed on the display surface 10a. The user performs input by touching (contacting or approaching) the display unit 10.

  The touch function is performed at the center portion of the display surface 10a. That is, the display surface 10a has a central region 10c and a peripheral region 10p. The center region 10c has a touch input function. The peripheral region 10p is provided around the central region 10c.

  As illustrated in FIG. 1A, the display surface 10a of the display unit 10 is, for example, a substantially rectangular shape (including a square). A central region 10c is provided inside the display surface 10a. A peripheral region 10p is provided along the outer edge 10r of the display surface 10a.

  The first component 21 faces the back surface 10 b of the display unit 10. The first component 21 is provided at a position overlapping the central region 10c.

  The second component 22 also faces the back surface 10 b of the display unit 10. The second component 22 is provided at a position overlapping the peripheral region 10p.

  That is, the first component 21 and the second component 22 are provided on the back side of the display unit 10. The first component 21 is, for example, a battery. The second component 22 is a PCB (Printed Circuit Board) including an electronic circuit. In an embodiment, these parts are optional.

  The first adhesive portion 31 is provided between the back surface 10 b and the first component 21. The first bonding portion 31 bonds the back surface 10b and the first component 21 together. The second adhesive portion 32 is provided between the back surface 10 b and the second component 22. The second bonding portion 32 bonds the back surface 10 b and the second component 22. For example, an elastic adhesive is used for the first adhesive portion 31 and the second adhesive portion 32.

  FIG. 1C illustrates an enlarged end portion of the electronic device 110. On the plate-shaped rear frame 61, the first component 21 and the second component 22 are arranged. A first bonding portion 31 is disposed on the first component 21. A second adhesive portion 32 is disposed on the second component 22. The display part 10 is arrange | positioned on these adhesion parts. The central region 10 c of the display unit 10 is bonded to the first component 21 by the first bonding unit 31. The peripheral region 10 p of the display unit 10 is bonded to the second component 22 by the second bonding unit 32.

  In this example, the display unit 10 includes a substrate 15, an intermediate sheet 16, and a surface layer 17. The substrate 15 is disposed between the surface layer 17 and the adhesive portion. An intermediate sheet 16 is disposed between the substrate 15 and the bonding portion. The surface layer 17 is, for example, a protective layer (protective panel). The substrate 15 is provided with a display layer such as an organic light emitting layer. The display layer is covered and protected by the intermediate sheet 16.

  The outer edge of the rear frame 61 and the outer edge 10r of the display unit 10 are held by the front frame 62. The front frame 62 has a frame shape.

FIG. 2 is a schematic cross-sectional view illustrating a part of the electronic device according to the first embodiment.
FIG. 2 shows an enlarged part of the display unit 10. As shown in FIG. 2, the display unit 10 is provided with a substrate 15 and a plurality of pixels 18. Resin is used for the substrate 15. For the substrate 15, for example, a resin substrate such as PET (polyethylene terephthalate), PC (polycarbonate), and PI (polyimide) is used. The substrate 15 can be deformed. The Young's modulus of the substrate 15 is, for example, 2 GPa (gigapascal) or more and 5 GPa or less.

  The plurality of pixels 18 are provided on the substrate 15. The plurality of pixels 18 are arranged in a matrix, for example, along the XY plane.

  In the embodiment, different planar patterns are applied to the first adhesive portion 31 and the second adhesive portion 32.

FIG. 3 is a schematic plan view illustrating a part of the electronic apparatus according to the first embodiment.
FIG. 3 illustrates a planar pattern of the first adhesive portion 31 and the second adhesive portion 32.
As shown in FIG. 3, the first bonding portion 31 has a plurality of first bonding regions 31 r. The plurality of first adhesion regions 31r are provided on an XY plane (a plane parallel to the display surface 10a). That is, the first bonding portion 31 is provided in a plurality of island shapes.

  The 2nd adhesion part 32 has a plurality of 2nd adhesion fields 32r. The plurality of second adhesion regions 32r are provided in the XY plane. That is, the second adhesive portion 32 is provided in a plurality of island shapes.

  In the present embodiment, the size of the first adhesive portion 31 is different from the size of the second adhesive portion 32. That is, the area of each of the plurality of first adhesion regions 31r is different from the area of each of the plurality of second adhesion regions 32r. In this example, each area of the plurality of first adhesion regions 31r is smaller than each area of the plurality of second adhesion regions 32r.

  For example, the ratio of the area of the first adhesive portion 31 in the XY plane (a plane parallel to the display surface 10a) to the unit area is defined as the first area ratio. The area of the 1st adhesion part 31 is a total of the area of each of a plurality of 1st adhesion fields 31r. The first area ratio is, for example, the surface density of the first bonding portion 31.

  On the other hand, the ratio of the area of the second adhesive portion 32 in the XY plane to the unit area is defined as a second area ratio. The area of the second bonding portion 32 is a total of the areas of the plurality of second bonding regions 32r. The second area ratio is, for example, the surface density of the second bonding portion 32.

  At this time, in the present embodiment, the second area ratio is different from the first area ratio. In this example, the first area ratio is lower than the second area ratio.

  In the present embodiment, the surface density of the bonding portion is changed between the central region 10c and the peripheral region 10p of the display unit 10 as described above. Thereby, for example, touch input is facilitated. Improves resistance to impact. Easy-to-use electronic devices can be provided.

  In the electronic device 110, it is important that the user feels good when performing touch input. It is difficult to use if the sensitivity of input operation is low. During touch input, stress in the Z-axis direction is applied to the display unit 10. At this time, if the display unit 10 is excessively deformed, the input operation is uncomfortable. For example, when a glass substrate is used as the display unit 10, the deformation of the display unit 10 is relatively small. On the other hand, when the resin substrate 15 is used for the display unit 10, the deformation of the display unit 10 becomes large.

  For example, there is a reference example in which no adhesive portion is provided in the space between the display unit 10 and the first component 21. In this reference example, the display unit 10 is greatly deformed by the stress of touch input. For this reason, a sense of incongruity arises. In some cases, display uniformity may be reduced.

  On the other hand, in the embodiment, the first bonding portion 31 is provided between the display unit 10 and the first component 21, and the display unit 10 and the first component 21 are bonded by the first bonding portion 31. Thereby, the deformation | transformation of the display part 10 is suppressed in the part to which the stress by touch input is added. Furthermore, since it has adhered, it can also suppress that the distance between the display part 10 and the 1st component 21 expands around the part to which stress is added. Thereby, touch input in which a sense of incongruity is suppressed is possible.

For example, when the thickness of the display unit 10 is t ₁ and the length of the display unit 10 in the XY plane (for example, the length in the X-axis direction) is b, the cross-sectional secondary moment I1 of the display unit 10 is , the b _· ^t 1 3/12. On the other hand, the rear frame 61, the thickness of the structure including a first part 21 and second part 22 and _{t 2.} When the entire surface of the display unit 10 is united with the structure, the second moment of inertia I2 at this time is b (t ₁ ³ + t ₂ ³ ) / 12. That is, when the entire surface of the display unit 10 is combined with the structure, the moment of inertia of the cross section increases.

  In the embodiment, a part of the display unit 10 is bonded to the structure by the first bonding unit 31 and the second bonding unit 32. In this case, a second moment of section corresponding to the bonding area is obtained. The cross-sectional secondary moment of the bonded display unit 10 is larger than the cross-sectional secondary moment I1 of the display unit 10 when not bonded. That is, in the embodiment, the rigidity of the display unit 10 can be improved by providing the bonding portion.

  On the other hand, when the electronic device 110 is portable, it is particularly required to have high resistance to impacts such as dropping. In the embodiment, the display unit 10 is fixed to the first component 21 and the second component 22 by the first adhesive portion 31 and the second adhesive portion 32, thereby improving the resistance to impact. The impact is particularly great in the peripheral region 10p of the display unit 10. Since the display unit 10 is firmly fixed in the peripheral region 10p, resistance to an impact caused by dropping or the like is improved. That is, resistance is obtained by increasing the surface density of the second adhesive portion 32.

  On the other hand, for example, in the central region 10c, it is preferable that the display unit 10 is appropriately deformed from the viewpoint of easy touch input. When a surface density similar to that of the peripheral region 10p is applied to the central region 10c, the ease of touch input may be reduced.

  For this reason, in the embodiment, as described above, the surface density of the bonding portion is changed between the central region 10c and the peripheral region 10p of the display unit 10. That is, in the central region 10c, the surface density of the first adhesive portion 31 is determined from the viewpoint of ease of touch input. On the other hand, in the peripheral region 10p, the surface density of the second adhesive portion 32 is determined from the viewpoint of resistance to impact.

  In the embodiment, the rigidity of the display unit 10 can be improved and a sense of discomfort in touch input can be suppressed. Furthermore, the resistance to impact is improved. Thereby, an easy-to-use electronic device can be provided.

  As described with reference to FIG. 3, when the areas of the plurality of first adhesive regions 31r are changed to the areas of the plurality of second adhesive regions 32r, the density of the plurality of adhesive regions may be constant. For example, the density of the plurality of first adhesion regions 31r in the XY plane is not less than 0.8 times and not more than 1.2 times the density of the plurality of second adhesion regions 32r in the XY plane. The design is facilitated by making the plurality of bonding regions constant.

  Each area of the plurality of first adhesion regions 31r and each area of the plurality of second adhesion regions 32r can be controlled when forming the adhesion portion. For example, the adhesive portion can be formed by a printing method such as screen printing. The pattern of the adhesion region can be changed by changing the screen printing pattern at this time. For example, a dispenser or the like may be used. By changing the amount of adhesive discharged from the dispenser, the pattern of the adhesive region can be changed.

The density of the plurality of first adhesion regions 31r in the XY plane is 10 pieces / mm ² or more and 100 pieces / mm ² or less. If the density is excessively low, for example, the deformation of the display unit 10 becomes non-uniform in the XY plane, and, for example, the accuracy of touch input decreases. If the density is excessively high, for example, controllability in forming the first adhesion region 31r may be reduced, and productivity may be reduced.

FIG. 4A and FIG. 4B are graphs illustrating characteristics of the electronic device according to the first embodiment.
These drawings illustrate the result of simulating the deformation of the display unit 10 when the surface density of the bonded part is changed. The horizontal axis in these figures represents the surface density Cp (%) of the bonded portion. The vertical axis in FIG. 4A is the displacement Ds (μm) of the display unit 10. The vertical axis in FIG. 4B is the hardness index HP (standardized value). When the hardness index HP is high, the display unit 10 is not easily deformed. When the hardness index HP is low, the display unit 10 is easily deformed.

  As illustrated in FIG. 4A, when the surface density Cp is 4%, 4.8%, 5.7%, and 6.6%, the displacement Ds is 0.48 μm, 0.46 μm, 0.8. 44 μm and 0.40 μm. When the surface density Cp is 3.9%, the displacement Ds is 0.50 μm.

  As shown in FIG. 4B, when the surface density Cp increases, the hardness index HP increases and the display unit 10 is not easily deformed. When the surface density Cp increases, the hardness index HP decreases and the display unit 10 is easily deformed.

  For example, the surface density Cp (first area ratio) of the first adhesive portion 31 is made lower than the surface density Cp (first area ratio) of the first adhesive portion 32.

  In the embodiment, the first area ratio is, for example, 0.045 (4.5%) or more and 0.065 (6.5%) or less. On the other hand, the second area ratio is 0.056 or more and 0.081 or less.

(Second Embodiment)
Also in the second embodiment, the display unit 10, the first component 21, the second component 22, the first bonding unit 31, and the second bonding unit 32 are provided. In the second embodiment, the planar patterns of the first adhesive portion 31 and the second adhesive portion 32 are different from those of the first embodiment. Since the part except these is the same as that of the first embodiment, the description is omitted. Below, the 1st adhesion part 31 and the 2nd adhesion part 32 are explained.

FIG. 5 is a schematic plan view illustrating a part of the electronic apparatus according to the second embodiment.
FIG. 5 illustrates a planar pattern of the first adhesive portion 31 and the second adhesive portion 32.
Also in the electronic device 111 according to the present embodiment, the first bonding portion 31 has a plurality of first bonding regions 31r provided in the XY plane, and the second bonding portion 32 is in the XY plane. And a plurality of second adhesion regions 32r provided in the region.

  The density of the plurality of first adhesion regions 31r in the XY plane is different from the density of the plurality of second adhesion regions 32r in the XY plane. In this example, the density of the plurality of first adhesion regions 31r in the XY plane is lower than the density of the plurality of second adhesion regions 32r in the XY plane.

  Thus, also in this embodiment, the first area ratio is different from the second area ratio. In this example, the first area ratio is lower than the second area ratio.

  By changing the density of the bonded portion, the surface density (that is, the area ratio) is changed. The area density of the bonding portion is different between the central region 10c and the peripheral region 10p of the display unit 10. In the central region 10c, the surface density of the first adhesive portion 31 is determined from the viewpoint of ease of touch input, and in the peripheral region 10p, the surface density of the second adhesive portion 32 from the viewpoint of resistance to impact. Is determined.

  Also in the present embodiment, the rigidity of the display unit 10 can be improved and a sense of discomfort in touch input can be suppressed. Furthermore, the resistance to impact is improved. Thereby, an easy-to-use electronic device can be provided.

  In the present embodiment, the size of the plurality of first adhesion regions 31r may be substantially the same as the size of the plurality of second adhesion regions 32r. For example, the area of each of the plurality of first adhesion regions 31r is 0.8 times to 1.2 times the area of each of the plurality of second adhesion regions 32r. For example, when the bonding portion is formed by a dispenser or the like, high productivity is easily obtained.

In the embodiment, the area of each of the plurality of first adhesion regions 31r is, for example, not less than 100 mm ^{2 and not} more than 2000 mm ² . On the other hand, the area of each of the plurality of second adhesion regions 32r is, for example, 30 mm ² or more and 1000 mm ² or less.

  You may implement combining 1st Embodiment and 2nd Embodiment. For example, the areas of the plurality of first adhesion regions 31r are different from the areas of the plurality of second adhesion regions 32r, and the density of the plurality of first adhesion regions 31r is the density of the plurality of second adhesion regions 32r. May be different.

  In the first and second embodiments, the plurality of first adhesion regions 31r are preferably arranged at equal intervals in the XY plane. Touch input is performed in the center region 10c. By arranging the plurality of first adhesion regions 31r at equal intervals, the deformation of the display unit 10 becomes uniform in the XY plane. Thereby, the precision of touch input improves and a sense of incongruity can be improved more.

  On the other hand, the pattern of the plurality of second adhesion regions 32r may be changed in the XY plane. For example, the applied impact may be different between the corner portion of the display unit 10 and the side portion. Correspondingly, the pattern of the plurality of second adhesion regions 32r may be changed.

(Third embodiment)
Also in the third embodiment, the display unit 10, the first component 21, the second component 22, the first adhesive portion 31, and the second adhesive portion 32 are provided. In the third embodiment, the characteristics of the first adhesive portion 31 are different from the characteristics of the second adhesive portion 32. Since the other parts are the same as those in the first embodiment, the description thereof is omitted. Below, the 1st adhesion part 31 and the 2nd adhesion part 32 are explained.

FIG. 6 is a schematic plan view illustrating a part of the electronic apparatus according to the third embodiment.
FIG. 6 illustrates a planar pattern of the first adhesive portion 31 and the second adhesive portion 32.
Also in the electronic apparatus 112 according to the present embodiment, the first adhesive portion 31 has a plurality of first adhesive regions 31r provided in the XY plane, and the second adhesive portion 32 is in the XY plane. And a plurality of second adhesion regions 32r provided in the region. The plane pattern of the first adhesive portion 31 is the same as the pattern of the second adhesive portion 32.

  In the present embodiment, the Young's modulus (first Young's modulus) of the first adhesive portion 31 is different from the Young's modulus (second Young's modulus) of the second adhesive portion 32.

  Thereby, different deformation characteristics of the display unit 10 are obtained in the central region 10c and the peripheral region 10p.

  For example, in the center region 10c, the first Young's modulus of the first adhesive portion 31 is determined from the viewpoint of ease of touch input. In the peripheral region 10p, the second Young's modulus of the second adhesive portion 32 is determined from the viewpoint of resistance to impact.

  Also in the present embodiment, the rigidity of the display unit 10 can be improved and a sense of discomfort in touch input can be suppressed. Furthermore, the resistance to impact is improved. Thereby, an easy-to-use electronic device can be provided.

  Each of the first Young's modulus and the second Young's modulus is not less than 0.1 gigapascal and not more than 1 gigapascal.

  For example, the first Young's modulus is lower than the second Young's modulus. The first Young's modulus is 0.8 times or more and 1.0 times lower than the second Young's modulus. The first Young's modulus is, for example, 0.1 gigapascal or more and 0.4 gigapascal or less, and the second Young's modulus is 0.125 gigapascal or more and 0.5 gigapascal or less.

  The Young's modulus of the bonded part can be changed by, for example, the molecular weight of the adhesive used for the bonded part, the amount of the rubber component contained, the amount of the filler contained, and the like.

  Also in this embodiment, it is preferable that the plurality of first adhesion regions 31r are arranged at equal intervals in the XY plane.

    You may implement combining the 1st-3rd embodiment. That is, the second adhesive portion 32 is at least one of a second area ratio different from the first area ratio of the first adhesive portion 31 and a second Young's modulus different from the first Young's modulus of the first adhesive portion 31. You may have. The first area ratio is a ratio of the area of the first adhesive portion 31 in the XY plane (a plane parallel to the display surface 10a) to the unit area. The second area ratio is a ratio of the area of the second adhesive portion 32 in the XY plane to the unit area.

  In the first to third embodiments, the center region 10c of the display unit 10 can be displaced by touch input. The displacement in the central region 10c is larger than the displacement in the peripheral region 10p. For example, when the first pressure in the −Z direction (the direction from the display unit 10 toward the first component 21) is applied to the central region 10c, the displacement along the −Z direction of the central region 10c is defined as the first displacement. On the other hand, the displacement along the −Z direction of the peripheral region 10p when the same first pressure is applied to the peripheral region 10p is defined as a second displacement. The first displacement is larger than the second displacement.

  For example, when the first pressure is 0.1 MPa, the first displacement in the −Z direction of the central region 10c is not less than 0.4 μm and not more than 1.0 μm. Thereby, the touch input with a little uncomfortable feeling can be provided.

The embodiment includes the following configuration.
(Appendix 1)
A display unit having a display surface and a back surface opposite to the display surface, the display surface having a center region having a touch input function and a peripheral region around the center region;
A first component facing the back surface and overlapping the central region;
A second component facing the back surface and overlapping the peripheral area;
A first bonding portion provided between the back surface and the first component and bonding the back surface and the first component;
A second adhesive portion provided between the back surface and the second component and bonding the back surface and the second component;
With
The second adhesive portion is
A second area ratio different from the first area ratio of the first adhesive portion; and
A second Young's modulus different from the first Young's modulus of the first adhesive portion;
Having at least one of
The first area ratio is a ratio of an area of the first adhesive portion in a plane parallel to the display surface to a unit area.
The second area ratio is an electronic device that is a ratio of the area of the second adhesive portion in the plane to the unit area.

(Appendix 2)
The electronic device according to supplementary note 1, wherein the first area ratio is lower than the second area ratio.

(Appendix 3)
The electronic device according to appendix 1 or 2, wherein the first adhesive portion and the second adhesive portion include an elastic adhesive.

(Appendix 4)
The first bonding portion has the plurality of first bonding regions provided in the plane,
The second adhesive portion has the plurality of second adhesive regions provided in the plane,
4. The electronic device according to claim 1, wherein each of the plurality of first adhesion regions has a smaller area than each of the plurality of second adhesion regions.

(Appendix 5)
The electronic device according to supplementary note 4, wherein a density of the plurality of first adhesion regions in the plane is 0.8 times or more and 1.2 times or less of a density of the plurality of second adhesion regions in the plane.

(Appendix 6)
The electronic device according to appendix 5, wherein the density of the plurality of first adhesion regions in the plane is 10 pieces / mm 2 or more and 100 pieces / mm ² or less.

(Appendix 7)
The first bonding portion has the plurality of first bonding regions provided in the plane,
The second adhesive portion has the plurality of second adhesive regions provided in the plane,
The electronic device according to any one of appendices 1 to 3, wherein a density of the plurality of first adhesion regions in the plane is lower than a density of the plurality of second adhesion regions in the plane.

(Appendix 8)
The electronic device according to appendix 7, wherein each area of the plurality of first adhesion regions is 0.8 times or more and 1.2 times or less than each area of the plurality of second adhesion regions.

(Appendix 9)
The electronic device according to appendix 8, wherein the area of each of the plurality of first adhesion regions is 100 mm ² or more and 2000 mm ² or less.

(Appendix 10)
The electronic device according to any one of appendices 4 to 9, wherein the plurality of first adhesion regions are arranged at equal intervals in the plane.

(Appendix 11)
The electronic device according to any one of supplementary notes 1 to 10, wherein the first area ratio is 0.045 or more and 0.065 or less.

(Appendix 12)
The electronic device according to any one of supplementary notes 1 to 11, wherein the second area ratio is 0.065 or more and 0.081 or less.

(Appendix 13)
Each of said 1st Young's modulus and said 2nd Young's modulus is an electronic device given in any 1 paragraph of appendices 1-12 which are 0.1 gigapascal or more and 1 gigapascal or less.

(Appendix 14)
The electronic device according to supplementary note 1, wherein the first Young's modulus is lower than the second Young's modulus.

(Appendix 15)
The electronic device according to appendix 1, wherein the first Young's modulus is 0.8 times or more and 1 time lower than the second Young's modulus.

(Appendix 16)
The first Young's modulus is 0.1 gigapascal or more and 0.4 gigapascal or less,
The electronic device according to appendix 1, wherein the second Young's modulus is 0.125 gigapascal or more and 0.5 gigapascal or less.

(Appendix 17)
The electronic device according to any one of appendices 1 to 16, wherein the display unit includes a resin substrate and a plurality of pixels provided on the substrate.

(Appendix 18)
The electronic device according to appendix 17, wherein the substrate has a Young's modulus of 3 gigapascal or more and 5 gigapascal or less.

(Appendix 19)
The first displacement along the direction of the central region when the first pressure in the direction from the display unit toward the first part is applied to the central region,
The electronic device according to additional notes 1 to 18, wherein the electronic device has a larger displacement than the second displacement along the direction of the peripheral region when the first pressure is applied to the peripheral region.

(Appendix 20)
The electronic apparatus according to appendix 19, wherein the first displacement is not less than 0.4 micrometers and not more than 1 micrometer when the first pressure is 0.1 megapascal.

  According to the embodiment, an easy-to-use electronic device can be provided.

  In the present specification, “vertical” and “parallel” include not only strictly vertical and strictly parallel, but also include, for example, variations in the manufacturing process, and may be substantially vertical and substantially parallel. It ’s fine.

The embodiments of the present invention have been described above with reference to specific examples. However, the present invention is not limited to these specific examples. For example, regarding the specific configuration of each element such as a substrate, a display unit, a component, and an adhesive unit included in an electronic device, the person skilled in the art appropriately implements the present invention by appropriately selecting from a well-known range, As long as an effect can be obtained, it is included in the scope of the present invention.
Moreover, what combined any two or more elements of each specific example in the technically possible range is also included in the scope of the present invention as long as the gist of the present invention is included.

  In addition, all electronic devices that can be appropriately modified and implemented by those skilled in the art based on the electronic devices described above as the embodiments of the present invention belong to the scope of the present invention as long as they include the gist of the present invention. .

  In addition, in the category of the idea of the present invention, those skilled in the art can conceive of various changes and modifications, and it is understood that these changes and modifications also belong to the scope of the present invention. .

  Although several embodiments of the present invention have been described, these embodiments are presented by way of example and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

DESCRIPTION OF SYMBOLS 10 ... Display part, 10a ... Display surface, 10b ... Back surface, 10c ... Center region, 10p ... Peripheral region, 10r ... Outer edge, 15 ... Substrate, 16 ... Intermediate sheet, 17 ... Surface layer, 18 ... Pixel, 21 ... First Parts 22 ... second parts 31 ... first adhesion part 31r ... first adhesion area 32 ... second adhesion part 32r ... second adhesion area 61 ... rear frame 62 ... front frame 110-112 ... Electronic equipment, AR ... arrow, Cp ... surface density,
Ds ... displacement, HP ... hardness index

Claims (5)

A display unit having a display surface and a back surface opposite to the display surface, the display surface having a center region having a touch input function and a peripheral region around the center region;
A first component facing the back surface and overlapping the central region;
A second component facing the back surface and overlapping the peripheral area;
A first bonding portion provided between the back surface and the first component and bonding the back surface and the first component;
A second adhesive portion provided between the back surface and the second component and bonding the back surface and the second component;
With
The second adhesive portion is
A second area ratio different from the first area ratio of the first adhesive portion; and
A second Young's modulus different from the first Young's modulus of the first adhesive portion;
Having at least one of
The first area ratio is a ratio of an area of the first adhesive portion in a plane parallel to the display surface to a unit area.
The second area ratio is an electronic device that is a ratio of the area of the second adhesive portion in the plane to the unit area.   The electronic device according to claim 1, wherein the first area ratio is lower than the second area ratio. The first bonding portion has the plurality of first bonding regions provided in the plane,
The second adhesive portion has the plurality of second adhesive regions provided in the plane,
3. The electronic device according to claim 1, wherein an area of each of the plurality of first adhesion regions is smaller than an area of each of the plurality of second adhesion regions. The first bonding portion has the plurality of first bonding regions provided in the plane,
The second adhesive portion has the plurality of second adhesive regions provided in the plane,
3. The electronic device according to claim 1, wherein a density of the plurality of first adhesion regions in the plane is lower than a density of the plurality of second adhesion regions in the plane.   5. The electronic device according to claim 1, wherein the first Young's modulus is lower than the second Young's modulus.

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