JP6597406B2 - Electronics - Google Patents

Description

  The present disclosure relates to an electronic device.

  In a liquid crystal display device, a structure is known in which a circuit board and a shield member covering the circuit board are electrically connected to reduce noise from a power supply or an electronic circuit (for example, Patent Document 1). reference).

JP 2002-124794 A

  In recent years, in electronic devices equipped with touch panels such as smartphones and tablet terminals, there are increasing opportunities for users to perform touch operations with their fingers, and accordingly, user demands for improving touch operability have increased. Yes. The touch panel that the user directly touches with a finger is provided with a sheet metal member on the back side from the viewpoint of reinforcement or the like. The sheet metal member is grounded by a contact spring mounted on the substrate from the viewpoint of improving the shield characteristics.

  The contact spring is elastically deformed in an assembled state in order to increase the reliability of electrical contact with the sheet metal member and the substrate. Therefore, in the assembled state, the back surface of the touch panel is always subjected to a local load due to the elastic deformation of the contact spring via the sheet metal member. Further, when the user performs a touch operation, the touch panel sinks as a whole, so that the amount of elastic deformation of the contact spring increases, and accordingly, a local load on the back surface of the touch panel increases. When the local load on the back surface of the touch panel is increased, bleeding may occur on the screen of the touch panel, and the appearance quality may be deteriorated.

  In view of this, in one aspect, an object of the present invention is to provide an electronic device that can reduce the possibility of blurring of a screen during a touch operation.

According to one aspect, a display unit including a touch panel;
A substrate on which an electronic circuit is provided;
A sheet metal member provided between the display unit and the substrate, wherein the surface on the display unit side is in contact with the display unit, and the surface on the substrate side has a curved surface with the substrate side convex;
An electronic device comprising: a contact spring provided between the substrate and the sheet metal member, and having a contact point with the sheet metal member at a position where the tangential direction on the curved surface is inclined with respect to the surface of the touch panel. Provided.

  An electronic device that can reduce the possibility of blurring of the screen during a touch operation is obtained.

It is a disassembled perspective view of the electronic device by one Example. It is a figure which shows the assembly | attachment state of LCD glass, a holder, and a sheet-metal member. It is a perspective view which shows the sheet-metal member by Example 1. FIG. It is a 3rd page figure of a sheet metal member. It is a perspective view which shows an example of the structure of a contact spring. It is sectional drawing which shows roughly the relationship between the sheet-metal member by Example 1, and a contact spring. It is sectional drawing which shows a 1st comparative example. It is sectional drawing which shows a 2nd comparative example. It is sectional drawing which shows schematically the relationship between a sheet-metal member provided with the spherical protrusion part with a large curvature radius, and a contact spring. It is sectional drawing which shows schematically the relationship between the sheet-metal member by Example 2, and a contact spring. It is a perspective view which shows the sheet-metal member by Example 3. FIG. It is a perspective view which shows the cross section from 2 directions of the sheet-metal member by Example 3. FIG. It is a perspective view which shows the sheet-metal member by Example 4. FIG. It is a perspective view which shows the cross section from 2 directions of the sheet-metal member by Example 4. FIG. It is a perspective view which shows the sheet-metal member by Example 5. FIG. It is a perspective view which shows the cross section from 2 directions of the sheet-metal member by Example 5. FIG. It is a perspective view which shows the sheet-metal member by Example 6. FIG. It is a perspective view which shows the cross section from 2 directions of the sheet-metal member by Example 6. FIG. It is sectional drawing which shows schematically the relationship between the sheet-metal member by Example 6, and a contact spring. It is a perspective view which shows the sheet-metal member by Example 7. FIG. It is a perspective view which shows the cross section from 2 directions of the sheet-metal member by Example 7. FIG.

  Hereinafter, embodiments will be described in detail with reference to the accompanying drawings.

[Example 1]
FIG. 1A is an exploded perspective view of a part of the electronic apparatus 1 according to the first embodiment. In FIG. 1A, the casing portion, battery, fine members (screws, caps, etc.), etc. are not shown. Further, FIG. 1A is for explaining the overall configuration of the electronic apparatus 1, and therefore, the detailed structure (structure to be described later) of the sheet metal member 20 is not shown. In FIG. 1A, an X axis, a Y axis, and a Z axis, which are three orthogonal axes, are defined. Here, the display surface of the LCD (Liquid Crystal Display) glass 12 of the electronic device 1 corresponds to the XY plane, the Z1 side of the Z axis corresponds to the front side of the electronic device 1, and the Z2 side corresponds to the rear (rear) side. .

  The electronic device 1 includes an LCD glass 12 (an example of a display unit), a sheet metal member 20, a substrate 30, and a contact spring 40.

  The LCD glass 12 integrally includes a touch panel 121. That is, the LCD glass 12 has a multilayer structure including the touch panel 121 layer on the front side. Note that the surface of the touch panel 121 extends in the XY plane. The touch panel 121 may be, for example, an electrostatic type or a pressure sensitive type. As shown in FIG. 1A, the LCD glass 12 may be provided with a holder 14 on the back side of the outer peripheral portion. 1B is a perspective view showing an assembled state of the LCD glass 12, the holder 14, and the sheet metal member 20, which are some of the components shown in FIG. 1A.

  The sheet metal member 20 is formed of a thin sheet metal. The sheet metal member 20 is provided on the back side of the LCD glass 12 and holds the LCD glass 12. The sheet metal member 20 has, for example, a shape that covers the side surface and the back surface of the LCD glass 12 (see FIG. 2). The sheet metal member 20 has a function of protecting (or reinforcing) the LCD glass 12. Further details of the sheet metal member 20 will be described later.

  The substrate 30 is provided with various electronic circuits 32 for realizing various functions of the electronic device 1. The electronic circuit 32 may include, for example, an electronic circuit included in an electronic component in the form of a chip or a wiring pattern formed on the substrate 30. The substrate 30 is provided on the back side of the sheet metal member 20. A contact spring 40 is provided on the substrate 30. For example, the contact spring 40 is joined to the substrate 30 by solder or the like. The substrate 30 may include two or more substrates such as a main substrate and a sub substrate.

  The contact spring 40 is formed of a conductor. The contact spring 40 is in the form of a leaf spring, for example. The contact spring 40 is provided between the substrate 30 and the sheet metal member 20 and grounds the sheet metal member 20. Specifically, the contact spring 40 contacts the back surface of the sheet metal member 20 and is electrically connected to the ground electrode 38 (see FIG. 5) on the substrate 30 on the substrate 30 side. The ground electrode 38 may be electrically connected to, for example, an inner ground layer (not shown) of the substrate 30. In this way, the sheet metal member 20 is grounded on the substrate 30 via the contact spring 40. Thereby, the shield characteristic by the sheet-metal member 20 improves, and the influence on the operation | movement of the electronic component on the board | substrate 30 by noise, static electricity etc. can be reduced, for example. That is, good electrical characteristics of the electronic device 1 can be ensured. Note that a plurality of contact springs 40 may be separately provided on the substrate 30 as shown in FIG. 1A. The arrangement of the plurality of contact springs 40 on the substrate 30 is arbitrary. An example of the structure of the contact spring 40 and a contact mode between the contact spring 40 and the sheet metal member 20 will be described later.

  FIG. 2 is a perspective view showing the sheet metal member 20 according to the first embodiment. FIG. 3 is a three-side view of the sheet metal member 20.

  As shown in FIG. 2, the sheet metal member 20 includes a bottom portion 22 and side portions 24.

  The bottom portion 22 basically extends (with respect to a first region excluding a protrusion 220 described later) in a plane having a normal direction in the Z direction, and has a size that substantially matches the outer shape of the LCD glass 12. The bottom 22 may be provided with a hole or a notch (not shown) for weight reduction or the like. The surface of the bottom 22 on the side of the LCD glass 12 is in contact with the back surface of the LCD glass 12 in the Z direction in a first region where a protrusion 220 described later is not formed. The surface of the bottom 22 on the LCD glass 12 side is separated from the back surface of the LCD glass 12 in a second region where a protrusion 220 described later is formed. In other words, the surface of the bottom 22 on the LCD glass 12 side protrudes in a direction away from the back surface of the LCD glass 12 (Z2 direction) in the second region.

  The side portion 24 is formed on the outer peripheral edge of the bottom portion 22. The side portion 24 is formed over the entire circumference of the bottom portion 22. The side portion 24 is formed by being bent by 90 degrees with respect to the bottom portion 22 and extends in the Z direction. The side part 24 contacts the side surface of the LCD glass 12.

  The sheet metal member 20 has a curved surface 224 on the back surface (that is, the surface on the substrate 30 side). The curved surface 224 is convex on the substrate 30 side. The curved surface 224 is formed by the protrusion 220. For example, the curved surface 224 can be formed by forming the protrusion 220 in a spherical shape, a cylindrical shape, or the like. In the first embodiment, as an example, the protrusion 220 is spherical. The spherical shape means a shape that does not need to be a true sphere and does not need to be a perfect sphere. In the example shown in FIGS. 2 and 3, the protrusion 220 is a hemispherical sphere. When the protrusion 220 is spherical, the entire back surface of the protrusion 220 is a curved surface 224.

  The protrusion 220 is formed on the bottom 22 of the sheet metal member 20. The protrusion 220 protrudes in the Z2 direction as shown in FIGS. That is, the bottom portion 22 is formed with a protruding portion 220 that protrudes toward the substrate 30. The protruding portion 220 can be formed by, for example, drawing or drawing a sheet metal material forming the sheet metal member 20.

  The protrusion 220 is formed corresponding to the contact spring 40 on the substrate 30. Therefore, the protrusion 220 overlaps the contact spring 40 on the substrate 30 in a top view. In the first embodiment, as an example, a plurality of protruding portions 220 are discretely formed on the bottom portion 22 of the sheet metal member 20 in a manner corresponding to each of the plurality of contact springs 40.

  FIG. 4 is a perspective view showing an example of the structure of the contact spring 40. In FIG. 4, the center line C of the contact spring 40 is shown by a one-dot chain line. The center line C forms a basic surface T (one-dot chain line), and the basic surface T is a surface on which main deflection of the contact spring 40 occurs (a surface including a load acting line when evaluating the spring constant).

  In the example shown in FIG. 4, the contact spring 40 includes a base portion 42, a bent portion 43, and an upper portion 44.

  The base part 42 is a part that contacts the substrate 30. The bent portion 43 is bent while extending from the base portion 42 in the Z1 direction. The upper portion 44 is connected to the base portion 42 through the bent portion 43. The upper part 44 faces the base part 42 in the Z direction. The upper portion 44 includes an end portion 442 serving as a free end, and the end portion 442 extends further in the Z1 direction than other portions of the upper portion 44. The contact spring 40 can be elastically deformed by bending the bent portion 43 and the upper portion 44 in a direction in which the end portion 442 approaches the base portion 42. When the contact spring 40 is elastically deformed, the distance between the end portion 442 and the base portion 42 in the Z direction is shorter than before the elastic deformation.

  FIG. 5 is a cross-sectional view schematically showing the relationship between the sheet metal member 20 and the contact spring 40 according to the first embodiment, and is a cross-sectional view taken along the basic surface T (see FIG. 4). In FIG. 5, the cross-sectional shape of the contact spring 40 is slightly different from the structure of the contact spring 40 shown in FIG. 4, but this difference is not essential. Although attention is paid to one contact spring 40 in FIG. 5, the same may be applied to other contact springs 40.

As shown in FIG. 5, the contact spring 40 is in contact with the protrusion 220 at the contact P <b> 1. The contact P1 is set at a position where the tangential direction _Tg is inclined with respect to the display surface (XY plane) of the LCD glass 12 on the curved surface 224 of the protrusion 220. That is, the contact spring 40 is in contact with the protruding portion 220 at a position excluding the vertex P2 of the protruding portion 220 (a point farthest from the LCD glass 12 in the Z direction).

FIG. 6 is a cross-sectional view showing a first comparative example. In the first comparative example, as shown in FIG. 5, the contact spring 40 contacts the protrusion 220 at a vertex P <b> 2 where the tangential direction _Tg is parallel to the display surface (XY plane) of the LCD glass 12. That is, the vertex P2 of the protrusion 220 has a tangential direction parallel to the XY plane, and in the first comparative example, the contact spring 40 contacts the protrusion 220 at the vertex P2.

  FIG. 7 is a cross-sectional view showing a second comparative example. In the second comparative example, unlike the sheet metal member 20, the sheet metal member 20 ′ does not have the protruding portion 220. That is, the contact spring 40 contacts the sheet metal member 20 ′ at the contact P3 on the flat back surface of the sheet metal member 20 ′.

  By the way, the contact spring 40 is elastically deformed in an assembled state in order to increase the reliability of electrical contact with the sheet metal member 20 and the substrate 30. Therefore, in the assembled state, the back surface of the LCD glass 12 is always subjected to a local load due to the elastic deformation of the contact spring 40 via the sheet metal member 20. Specifically, as shown in FIG. 5, the contact spring 40 is elastically deformed in the assembled state, and a load F <b> 1 acts on the sheet metal member 20 due to the elastic deformation of the contact spring 40. Accordingly, the back surface of the LCD glass 12 always receives a local load due to the load F <b> 1 through the sheet metal member 20. This is true in any of Example 1, the first comparative example, and the second comparative example.

  Here, when the user touches the display surface of the LCD glass 12 with a finger, the LCD glass 12 sinks in the Z2 direction as a whole, so that the amount of elastic deformation of the contact spring 40 increases, and accordingly the LCD glass 12 Increases the local load on the back of the. When the local load on the back surface of the LCD glass 12 is increased, bleeding may occur on the screen of the LCD glass 12 and the appearance quality may be deteriorated.

  On the other hand, according to the first embodiment, the possibility of blurring of the screen of the LCD glass 12 during the touch operation can be reduced.

Specifically, according to the first embodiment, as described above, the contact spring 40 is in contact with the protrusion 220 at the contact P1 on the curved surface 224 as shown in FIG. The direction _Tg is inclined with respect to the display surface of the LCD glass 12. Accordingly, the load F1 acting on the sheet metal member 20 due to the elastic deformation of the contact spring 40 is not in a direction perpendicular to the display surface of the LCD glass 12, but in an inclined direction (tangential direction) as shown in FIG. the perpendicular direction) to T _g. That is, the load F1 is a component Fz in the Z-direction, consists of a component _{F XY} in the XY plane, the component _{F XY,} greater than 0.

  Here, the load that affects bleeding on the screen of the LCD glass 12 is a load in the Z direction. This is because the shearing force does not substantially affect bleeding on the screen of the LCD glass 12. According to the first embodiment, the load F1 acts in a direction inclined with respect to the display surface of the LCD glass 12. Therefore, the magnitude of the component Fz in the Z direction of the load F1 is smaller than the magnitude of the load F1. On the other hand, in the first comparative example (FIG. 6) and the second comparative example (FIG. 7), the magnitude of the component Fz in the Z direction is the same as the magnitude of the load F1. Therefore, according to Example 1, compared with the 1st comparative example (FIG. 6) and the 2nd comparative example (FIG. 7), the possibility of the blur of the screen of LCD glass 12 in the case of touch operation can be reduced.

  From the viewpoint of increasing the reliability of electrical contact (shield function) between the sheet metal member 20 and the substrate 30 in the assembled state, the magnitude of the load F1 may be a certain value or more, and the direction of the load F1 is a problem. Not. Therefore, according to the first embodiment, it is possible to reduce the possibility of bleeding of the screen of the LCD glass 12 during the touch operation while improving the reliability of the electrical contact with the sheet metal member 20 and the substrate 30 in the assembled state.

Note that the magnitude of the component Fz in the Z direction of the load F1 decreases as the contact P1 is closer to the LCD glass 12. That is, the closer the contact P1 is to the LCD glass 12, the more the load F1 is dispersed in the direction in the XY plane. This is because as the point P1 is closer to the LCD glass 12, the tangential _{T g,} is because the inclination angle increases with respect to the display surface of the LCD glass 12 (XY plane). In the example shown in FIG. 5, the contact point P <b> 1 is set near the middle between the vertex P <b> 2 of the protrusion 220 and the root. In this regard, for example, by changing the shape of the contact spring 40 so that the tip of the end 442 of the contact spring 40 contacts the protrusion 220, the contact P1 can be made closer to the LCD glass 12.

In the first embodiment, the distance H _{1 in} the Z direction from the substrate 30 to the contact P1 is the shortest distance H _{2 in} the Z direction from the substrate 30 to the protrusion 220 (= the Z direction from the substrate 30 to the vertex P2). Longer than distance). In this regard, in the first comparative example (FIG. 6), the distance in the Z direction from the substrate 30 to the apex P2 is consistent with the distance of H ₂ shortest Z direction from the substrate 30 to the projecting portion 220. Therefore, according to the first embodiment, as compared with the first comparative example (FIG. 6), by a distance H ₂ and the distance difference between H ₁ delta, it can reduce the distance in the Z direction between the substrate 30 and the LCD glass 12 Therefore, the electronic device 1 can be thinned.

The distance _{H 2} and the distance difference between _{H 1} delta, the contact P1 increases closer to the LCD glass 12. Therefore, for example, the difference Δ between the distance H ₂ and the distance H ₁ may be further increased by changing the shape of the contact spring 40 so that the tip of the end portion 442 of the contact spring 40 contacts the protrusion 220.

  In the first embodiment, the sheet metal member 20 is separated from the LCD glass 12 in the region of the protrusion 220 as shown in FIG. That is, as shown in FIG. 5, the sheet metal member 20 has a cavity 70 between the protrusion 220 and the LCD glass 12 in the region (second region). Thereby, compared with the 2nd comparative example (Drawing 7), the area which receives load F1 in LCD glass 12 can be expanded. Specifically, in the second comparative example (FIG. 7), the LCD glass 12 receives a load F1 acting on the sheet metal member 20 due to elastic deformation of the contact spring 40 substantially at a point. In this case, the pressure generated in the LCD glass 12 due to the load F1 increases, and bleeding tends to occur. That is, bleeding is likely to occur due to stress concentration due to point contact. In contrast, according to the first embodiment, the load F1 is not transmitted directly from the protrusion 220 to the LCD glass 12, but is transmitted from the region R (see FIG. 5) extending around the protrusion 220 to the LCD glass 12. . That is, the LCD glass 12 can receive the load F <b> 1 in the region R (in the first embodiment, the annular region in plan view) rather than the point. As a result, compared to the second comparative example (FIG. 7), bleeding that can occur on the screen of the LCD glass 12 due to the touch operation can be reduced more effectively.

  Moreover, in Example 1, since the sheet metal member 20 has the cavity 70 between the LCD glass 12 in the region of the protrusion 220 as shown in FIG. 5, the protrusion 220 itself can be elastically deformed. Therefore, for example, when the magnitude of the load F1 becomes relatively large during a touch operation, the protrusion 220 itself may be elastically deformed. That is, the rigidity of the protrusion 220 may be designed to be elastically deformed during a touch operation. In this case, since the load transmitted to the LCD glass 12 is reduced, bleeding that may occur on the screen of the LCD glass 12 due to the touch operation can be more effectively reduced.

  Further, in the first embodiment, the sheet metal member 20 has a protruding portion 220. Accordingly, when the sheet thickness of the sheet metal member 20 is the same as the sheet thickness of the sheet metal member 20 ′ according to the second comparative example (FIG. 7), the sheet metal member 20 has higher rigidity than the sheet metal member 20 ′. Therefore, according to Example 1, as compared with the second comparative example (FIG. 7), it is possible to further reduce the thickness (light weight) of the sheet metal member 20 while ensuring a necessary reinforcing function.

In the first embodiment, as described above, the spherical details of the protrusion 220 are arbitrary, and the radius of curvature and the like may be determined based on processing requirements and the like. Further, the spherical shape (that is, the curved surface 224) of the protrusion 220 may be a shape determined by a combination of a plurality of curvature radii. Incidentally, for example, as shown in FIG. 8, the distance H ₂ of the spherical radius of curvature of the fixed while protruding portion 220 is increased, can reduce the distance in the Z direction between the substrate 30 and the LCD glass 12, the electronic device 1 Can be made thinner.

[Example 2]
The electronic device according to the second embodiment is different from the electronic device 1 according to the first embodiment described above in that the sheet metal member 20 is replaced with a sheet metal member 20B. Other configurations may be substantially the same as those of the first embodiment described above, and the sheet metal member 20B will be described below.

  FIG. 9 is a cross-sectional view schematically showing the relationship between the sheet metal member 20B and the contact spring 40 according to the second embodiment, and is a cross-sectional view taken along the basic surface T of the contact spring 40 (see FIG. 4).

The sheet metal member 20B is substantially different from the sheet metal member 20 according to the first embodiment described above in that the protrusion 220 is replaced with the protrusion 220B. The protrusion 220B of the sheet metal member 20B according to the second embodiment is different from the protrusion 220 of the sheet metal member 20 according to the first embodiment described above in that a hole 222 is provided at the top. The hole 222 may be formed by punching, for example, at the time of drawing. Again, the protruding portion 220B has around the holes 222, contacts P1 in contact with the contact spring 40 can form a curved surface 224B with (tangential _{T g} is point P1 that is inclined with respect to the display surface of the LCD glass 12).

  According to the second embodiment, the same effect as that of the first embodiment described above can be obtained.

[Example 3]
The electronic device according to the third embodiment is different from the electronic device 1 according to the first embodiment described above in that the sheet metal member 20 is replaced with a sheet metal member 20C. Other configurations may be substantially the same as those of the first embodiment described above, and the sheet metal member 20C will be described below.

  FIG. 10 is a perspective view showing a sheet metal member 20C according to the third embodiment. FIG. 11 is a perspective view showing a cross section of the sheet metal member 20C from two directions. FIG. 11 shows a cross-sectional view along the Y direction of a half of the sheet metal member 20C in the X direction on the left side, and a cross-sectional view along the X direction of a half of the sheet metal member 20C in the Y direction on the right side. Has been.

  The sheet metal member 20C is substantially different from the sheet metal member 20 according to the first embodiment described above in that the protrusion 220 is replaced with the protrusion 220C. The protrusion 220C of the sheet metal member 20C according to the third embodiment is different from the protrusion 220 of the sheet metal member 20 according to the first embodiment in that the protrusion 220C has an asymmetric spherical shape that is long in the Y direction. Specifically, as illustrated in FIG. 11, the protrusion 220 </ b> C is elliptical in a cross-sectional view along the Y direction, and the protrusion 220 </ b> C is circular in a cross-sectional view along the X direction.

In FIGS. 10 and 11, the protrusions 220 </ b> C of the sheet metal member 20 </ b> C according to the third embodiment are regularly arranged for explanation. Actually, the protruding portions 220C are arranged so as to correspond to the respective positions of the contact spring 40, like the protruding portions 220 of the sheet metal member 20 according to the first embodiment. The contact mode between the protrusion 220C and the contact spring 40 is the same mode as that of the first embodiment shown in FIG. 5 in a cross-sectional view in the X direction or the Y direction. That is, even in Example 3, the projecting portion 220C, the contact P1 in contact with the contact spring 40 can form a curved surface 224C with (tangential _{T g} is point P1 that is inclined with respect to the display surface of the LCD glass 12).

  According to the third embodiment, the same effect as that of the first embodiment described above can be obtained.

  In the third embodiment, the protrusion 220C has an asymmetric spherical shape that is long in the Y direction. Alternatively, the protruding portion 220C may be an asymmetric spherical shape that is long in the X direction, or in the X and Y directions. It may be an asymmetrical sphere long in an oblique direction.

[Example 4]
The electronic apparatus according to the fourth embodiment is different from the electronic apparatus 1 according to the first embodiment described above in that the sheet metal member 20 is replaced with a sheet metal member 20D. Other configurations may be substantially the same as those of the first embodiment described above, and the sheet metal member 20D will be described below.

  FIG. 12 is a perspective view showing a sheet metal member 20D according to the fourth embodiment. FIG. 13 is a perspective view showing a cross section of the sheet metal member 20D from two directions. FIG. 13 shows a cross-sectional view along the Y direction of a half of the sheet metal member 20D in the X direction on the left side, and a cross-sectional view along the X direction of a half of the sheet metal member 20D in the Y direction on the right side. Has been.

  The sheet metal member 20D is substantially different from the sheet metal member 20 according to the first embodiment described above in that the protrusion 220 is replaced with the protrusion 220D. The protruding portion 220D of the sheet metal member 20D according to the fourth embodiment is different from the protruding portion 220 of the sheet metal member 20 according to the first embodiment described above in that it has a cylindrical shape extending in the X direction. Specifically, as illustrated in FIG. 13, the protrusion 220D has a circular shape in a cross-sectional view along the Y direction, and the protrusion 220D has a rectangular shape in a cross-sectional view along the X direction.

In FIGS. 12 and 13, the protrusions 220 </ b> D of the sheet metal member 20 </ b> D according to the fourth embodiment are regularly arranged for explanation. Actually, the protruding portion 220D is disposed so as to correspond to each position of the contact spring 40, like the protruding portion 220 of the sheet metal member 20 according to the first embodiment. However, in the fourth embodiment, each of the protrusions 220D can be formed so as to be in contact with the plurality of contact springs 40 simultaneously. The contact mode between the protrusion 220D and the contact spring 40 is the same mode as that of the first embodiment shown in FIG. That is, even in Example 4, the protruding portion 220D, the contact P1 in contact with the contact spring 40 can form a curved surface 224D with a (tangential _{T g} is point P1 that is inclined with respect to the display surface of the LCD glass 12). However, in Example 4, since the protrusion 220D and the contact spring 40 are in line contact, the contact P1 exists continuously in the X direction.

  According to the fourth embodiment, the same effect as that of the first embodiment described above can be obtained. Further, in the fourth embodiment, since the protrusion 220D can function as a rib, the rigidity (for example, strength against dropping impact and bending) of the sheet metal member 20D can be efficiently increased.

  In the fourth embodiment, the protrusion 220D has a cylindrical shape extending in the X direction. Alternatively, the protruding portion 220D may have a cylindrical shape extending in the Y direction, or in the X and Y directions. On the other hand, it may have a cylindrical shape that is long in an oblique direction. In the fourth embodiment, the protrusion 220D extends linearly in the X direction, but is not limited thereto. When a plurality of contact springs 40 that are in contact with one protrusion 220D are offset from each other in the Y direction, the one protrusion 220D is offset in the Y direction at one or more points in the middle of the X direction. It may extend in the X direction.

[Example 5]
The electronic device according to the fifth embodiment is different from the electronic device 1 according to the first embodiment described above in that the sheet metal member 20 is replaced with a sheet metal member 20E. Other configurations may be substantially the same as those of the first embodiment described above, and the sheet metal member 20E will be described below.

  FIG. 14 is a perspective view showing a sheet metal member 20E according to the fifth embodiment. FIG. 15 is a perspective view showing a cross section of the sheet metal member 20E from two directions. FIG. 15 shows a cross-sectional view along the Y direction of a half of the sheet metal member 20E in the X direction on the left side, and a cross-sectional view along the X direction of a half of the sheet metal member 20E in the Y direction on the right side. Has been.

  The sheet metal member 20E is substantially different from the sheet metal member 20 according to the first embodiment described above in that the protrusion 220 is replaced with the protrusion 220E. The protrusion 220E of the sheet metal member 20E according to the fifth embodiment is replaced with a plurality of protrusions E extending in a cylindrical shape in the X direction and the Y direction with respect to the protrusion 220 of the sheet metal member 20 according to the first embodiment. Different points. The several protrusion part E is continuously formed in the aspect connected with each other.

In FIGS. 14 and 15, the protrusions 220 </ b> E of the sheet metal member 20 </ b> E according to the fifth embodiment are regularly arranged for explanation. Actually, the protruding portion 220E is disposed so as to correspond to each position of the contact spring 40, like the protruding portion 220 of the sheet metal member 20 according to the first embodiment. However, in the fifth embodiment, each of the protrusions 220E can be formed so as to be in contact with the plurality of contact springs 40 at the same time. As in the fourth embodiment described above, when a plurality of contact springs 40 that are in contact with a certain protrusion 220E are offset from each other in the Y direction, the protrusion 220E is located at one place in the middle of the X direction. The X direction may be extended while offset in the Y direction. The contact mode between the protrusion 220E and the contact spring 40 is the same mode as that of the first embodiment shown in FIG. 5 in a cross-sectional view in the X direction or the Y direction. That is, in the case of Example 5, the protruding portion 220E, the contact P1 in contact with the contact spring 40 can form a curved surface 224E having a (tangential _{T g} is point P1 that is inclined with respect to the display surface of the LCD glass 12). However, in Example 5, since the protrusion 220E and the contact spring 40 are in line contact, the contact P1 exists continuously in the Y direction or the X direction.

  According to the fifth embodiment, the same effect as that of the first embodiment described above can be obtained. Moreover, in the present Example 5, since the protrusion part 220E can function as a rib, the rigidity of the sheet-metal member 20E can be improved efficiently.

[Example 6]
The electronic device according to the sixth embodiment is different from the electronic device 1 according to the first embodiment described above in that the sheet metal member 20 is replaced with a sheet metal member 20F. Other configurations may be substantially the same as those of the first embodiment described above, and the sheet metal member 20F will be described below.

  FIG. 16 is a perspective view showing a sheet metal member 20F according to the sixth embodiment. FIG. 17 is a perspective view showing a cross section of the sheet metal member 20F from two directions. FIG. 17 shows a cross-sectional view along the Y direction of a half of the sheet metal member 20F in the X direction on the left side, and a cross-sectional view along the X direction of a half of the sheet metal member 20F in the Y direction on the right side. Has been. 18 is a cross-sectional view schematically showing the relationship between the sheet metal member 20F and the contact spring 40, and is a cross-sectional view taken along the basic surface T of the contact spring 40 (see FIG. 4).

  The sheet metal member 20F is substantially different from the sheet metal member 20 according to the first embodiment described above in that the protrusion 220 is replaced with the protrusion 220F. The protrusion 220F of the sheet metal member 20F according to the sixth embodiment is different from the protrusion 220 of the sheet metal member 20 according to the first embodiment described above in the shape of a rectangular parallelepiped that is long in the Y direction.

  The sheet metal member 20F has a curved surface 224F (see FIG. 18) on the back surface (that is, the surface on the substrate 30 side). The curved surface 224F is convex on the substrate 30 side. The curved surface 224F is formed by the protrusion 220F. The curved surface 224F can be formed due to an angular radius formed when the protrusion 220F is formed by drawing or the like. That is, in Example 6, the curved surface 224F is formed at the corner of the projecting portion 220F having a rectangular parallelepiped shape (the corner between the side portion and the bottom portion on the substrate 30 side).

  In FIGS. 16 and 17, the protrusions 220 </ b> F of the sheet metal member 20 </ b> F according to the sixth embodiment are regularly arranged for the purpose of explanation. Actually, the protrusions 220F are arranged so as to correspond to the respective positions of the contact spring 40, like the protrusions 220 of the sheet metal member 20 according to the first embodiment.

The contact mode between the protrusion 220F and the contact spring 40 is the same mode as that of the first embodiment shown in FIG. 5 in a cross-sectional view in the X direction or the Y direction. That is, even if of Example 6, the projecting portion 220F, the contact P1 in contact with the contact spring 40 can form a curved surface 224F with (tangential _{T g} is point P1 that is inclined with respect to the display surface of the LCD glass 12). Specifically, as shown in FIG. 18, the contact spring 40 is in contact with the projecting portion 220F at point P1 tangential _{T g} of the on the curved surface 224F is inclined with respect to the display surface of the LCD glass 12 (XY plane) . In Example 6, since the protrusion 220F and the contact spring 40 are in line contact, the contact P1 exists continuously in the Y direction or the X direction.

  According to the sixth embodiment, the same effect as that of the first embodiment described above can be obtained.

  In the sixth embodiment, the protruding portion 220F has a rectangular parallelepiped shape that is long in the Y direction. Alternatively, the protruding portion 220F may have a rectangular parallelepiped shape that is long in the X direction, or an oblique direction with respect to the X and Y directions. It may be a long rectangular parallelepiped. Alternatively, the protrusion 220F may be a cube.

[Example 7]
The electronic apparatus according to the seventh embodiment is different from the electronic apparatus 1 according to the first embodiment described above in that the sheet metal member 20 is replaced with a sheet metal member 20G. Other configurations may be substantially the same as those of the first embodiment described above, and the sheet metal member 20G will be described below.

  FIG. 19 is a perspective view showing a sheet metal member 20G according to the seventh embodiment. FIG. 20 is a perspective view showing a cross section of the sheet metal member 20G from two directions. FIG. 20 shows a cross-sectional view along the Y direction of a half of the sheet metal member 20G in the X direction on the left side, and a cross-sectional view along the X direction of a half of the sheet metal member 20G in the Y direction on the right side. Has been.

  The sheet metal member 20G is substantially different from the sheet metal member 20 according to the first embodiment described above in that the protrusion 220 is replaced with the protrusion 220G. The protrusion 220G of the sheet metal member 20G according to the seventh embodiment is different from the protrusion 220 of the sheet metal member 20 according to the first embodiment described above in the shape of a rectangular parallelepiped extending in the X direction.

In FIGS. 19 and 20, the protrusions 220 </ b> G of the sheet metal member 20 </ b> G according to the seventh embodiment are regularly arranged for explanation. Actually, the protruding portion 220G is arranged so as to correspond to each position of the contact spring 40, like the protruding portion 220 of the sheet metal member 20 according to the first embodiment. However, in the seventh embodiment, each of the protrusions 220 </ b> G can be formed so as to be in contact with the plurality of contact springs 40 at the same time. The contact mode between the protrusion 220G and the contact spring 40 is the same mode as that of the sixth embodiment shown in FIG. 18 in a cross-sectional view in the X direction or the Y direction. That is, in the case of Example 7, the projecting portion 220G, the contact P1 in contact with the contact spring 40 can form a curved surface 224G with (tangential _{T g} is point P1 that is inclined with respect to the display surface of the LCD glass 12). However, in Example 7, since the protrusion 220G and the contact spring 40 are in line contact, the contact P1 exists continuously in the Y direction or the X direction.

  According to the seventh embodiment, the same effect as that of the first embodiment described above can be obtained. Moreover, in the present Example 7, since the protrusion part 220G can function as a rib, the rigidity of the sheet-metal member 20G can be improved efficiently.

  Although each embodiment has been described in detail above, it is not limited to a specific embodiment, and various modifications and changes can be made within the scope described in the claims. It is also possible to combine all or a plurality of the components of the above-described embodiments.

  For example, in each embodiment described above, the LCD glass 12 as an example of the display unit integrally includes the touch panel 121, but the touch panel 121 may be provided separately from the LCD display panel. That is, the display unit may include an LCD display panel and the touch panel 121 independently. The display unit may include a display device other than the LCD. For example, instead of the LCD glass 12, an organic EL (ElectroLuminescence) display may be used.

In addition, the following additional remarks are disclosed regarding the above Example.
(Appendix 1)
A display unit including a touch panel;
A substrate on which an electronic circuit is provided;
A sheet metal member provided between the display unit and the substrate, wherein the surface on the display unit side is in contact with the display unit, and the surface on the substrate side has a curved surface with the substrate side convex;
An electronic device comprising: a contact spring provided between the substrate and the sheet metal member, and having a contact point with the sheet metal member at a position on the curved surface where a tangential direction is inclined with respect to the surface of the touch panel.
(Appendix 2)
The sheet metal member includes a protrusion that protrudes in a direction toward the substrate, and the curved surface is formed by the protrusion.
The electronic device according to appendix 1, wherein a distance from the substrate in a direction perpendicular to the surface of the substrate is longer than a shortest distance to the protrusion.
(Appendix 3)
The electronic device according to attachment 2, wherein a surface of the sheet metal member on the display unit side is separated from the display unit in a region of the protrusion.
(Appendix 4)
The electronic device according to appendix 2 or 3, wherein the protrusion is spherical or cylindrical.
(Appendix 5)
A plurality of the contact springs are provided,
5. The electronic device according to claim 1, wherein the protruding portion is in contact with the plurality of contact springs.
(Appendix 6)
The electronic device according to any one of appendices 2 to 4, wherein a plurality of the contact springs and the protrusions are provided in the same number.
(Appendix 7)
The electronic device according to any one of appendices 2 to 6, wherein the curved surface is formed by a corner radius at the protruding portion.
(Appendix 8)
The electronic device according to any one of appendices 2 to 7, wherein the protrusion is formed by drawing or drawing.
(Appendix 9)
The electronic device according to any one of appendices 1 to 8, wherein the display unit is LCD glass that integrally includes the touch panel.
(Appendix 10)
The electronic device according to any one of appendices 1 to 9, wherein the contact spring is electrically connected to a ground electrode of the substrate.
(Appendix 11)
The electronic device according to any one of appendices 1 to 10, wherein the sheet metal member includes a bottom portion that supports a back surface of the display portion and side portions that face four side surfaces of the display portion.
(Appendix 12)
A sheet metal member that is provided between a display unit including a touch panel of an electronic device and a substrate and holds the display unit,
A contact point with a contact spring bonded to the substrate is provided on the surface of the substrate side having a curved surface with the substrate side convex, and a tangential direction on the curved surface is inclined with respect to the surface of the touch panel. A sheet metal member.
(Appendix 13)
A display unit including a touch panel;
A substrate on which an electronic circuit is provided;
Provided between the display unit and the substrate, the surface on the display unit side in the first region is in contact with the display unit, and the surface on the display unit side in the second region different from the first region is the display A sheet metal member that protrudes in a direction away from the portion toward the substrate;
An electronic device comprising: a contact spring provided between the substrate and the sheet metal member and having a contact point with the sheet metal member in the second region.

DESCRIPTION OF SYMBOLS 1 Electronic device 12 LCD glass 14 Holder 20, 20B-20G Sheet metal member 22 Bottom part 24 Side part 30 Substrate 32 Electronic circuit 38 Ground electrode 40 Contact spring 42 Base part 43 Bending part 44 Upper part 442 End part 70 Cavity 220, 220B-220G Projection Part 222 hole 224, 224B to 224G curved surface

Claims (5)

A display unit including a touch panel;
A substrate on which an electronic circuit is provided;
A sheet metal member provided between the display unit and the substrate, wherein the surface on the display unit side is in contact with the display unit, and the surface on the substrate side has a curved surface with the substrate side convex;
An electronic device comprising: a contact spring provided between the substrate and the sheet metal member, and having a contact point with the sheet metal member at a position on the curved surface where a tangential direction is inclined with respect to the surface of the touch panel. The sheet metal member includes a protrusion that protrudes in a direction toward the substrate, and the curved surface is formed by the protrusion.
The electronic device according to claim 1, wherein a distance to the contact point is longer than a shortest distance to the protrusion with respect to a distance in a direction perpendicular to the surface of the substrate from the substrate.   The electronic device according to claim 2, wherein a surface of the sheet metal member on the display unit side is separated from the display unit in a region of the protrusion.   The electronic device according to claim 2, wherein the protruding portion is spherical or cylindrical. A plurality of the contact springs are provided,
The electronic device according to claim 2, wherein the protruding portion is in contact with the plurality of contact springs.

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