JP2023035705A - Display device - Google Patents

Abstract

To provide a display device with which it is possible to suppress the local deformation and breakage at an edge of a transparent cover.SOLUTION: A transparent cover 2 of a display device 1 is attached to a housing 6, with a display panel 4 pasted to the transparent cover 2. The housing 6 includes two protrusions 62, the tip faces 62a of which project from a surface 2a of the transparent cover 2. The two protrusions 62 are arranged on both outer sides across opposing two sides that constitute the contour of the transparent cover 2 and are located on the outside of the upper and lower ends of the transparent cover 2 in the state when the display device 1 is in use. The two protrusions 62 are greater in thickness than a portion of the housing 6 that faces the display panel 4, and at least a portion of an outside surface 62 that is opposite the transparent cover 2 is an inclined surface progressively getting far from the transparent cover 2 as it goes away from a tip face 62a.SELECTED DRAWING: Figure 2

Description

The present invention relates to display devices.

2. Description of the Related Art Conventionally, there has been known a display device in which a transparent cover made of glass or the like is attached to a housing so that the transparent cover covers the display surface of a display panel housed in the housing (for example, Patent Document 1).

In the display device described in Patent Document 1, a bracket having a planar size one size larger than the glass is interposed between a transparent cover made of glass and a housing, and the glass is adhered to the bracket with an adhesive or the like. It has a configuration.

Japanese Patent No. 6074498

In recent years, this type of display device is required to improve impact resistance of the transparent cover, for example, in vehicle-mounted applications such as automobiles. In the display device described in Patent Document 1, when some object collides with the edge of the glass, the adhesive between the glass and the bracket becomes an elastic body to absorb the impact, and the edge of the glass cracks or the like. Suppresses the occurrence of damage to

However, when some object collides with the bracket from the display surface side (front) of this display device, the bracket is a separate body from the housing, and therefore deforms to the opposite side (rear) of the display surface. In this case, the edge of the glass deforms following the bracket, and the glass may break due to local bending toward the rear.

In view of the above points, the present invention provides a display device capable of suppressing damage due to local deformation at the edge of the transparent cover even when some object collides with the portion where the transparent cover is attached. intended to

To achieve the above object, the display device according to claim 1 comprises a transparent cover (2) having a front surface (2a) and a back surface (2b), a display panel (4) attached to the back surface of the transparent cover, A housing (6) to which a transparent cover is attached, the housing having two protrusions (62) with tip surfaces (62a) protruding from the surface of the transparent cover, the two protrusions Along the two sides of the outer shell of the transparent cover that face each other, they are arranged on both outer sides of the two sides, and are positioned outside the upper and lower ends of the transparent cover when the display device is in use, and the display panel of the housing. At least a portion of the outer surface (62c) located on the opposite side of the transparent cover among the two projections is inclined in a direction away from the transparent cover as it moves away from the tip surface. It is the surface.

In this display device, a transparent cover is attached to a housing, and the housing has two protruding portions whose tip surfaces protrude beyond the surface of the transparent cover. The two protruding parts are arranged along two opposing sides of the sides forming the outline of the transparent cover while sandwiching the two sides, and at least a part of the outer surface moves away from the transparent cover toward the rear surface of the housing. It has an inclined surface. As a result, when an object collides with the projecting portion, the housing has a structure in which the central portion is preferentially deformed while the impact force of the object is mitigated by the inclined surface of the projecting portion. As a result, the display device has a structure in which the end portion of the transparent cover is less likely to locally deform due to the deformation of the housing, and breakage at the end portion of the transparent cover is suppressed.

It should be noted that the reference numerals in parentheses attached to each component etc. indicate an example of the correspondence relationship between the component etc. and specific components etc. described in the embodiments described later.

1 is a perspective view showing a display device according to a first embodiment; FIG. FIG. 2 is a cross-sectional view showing a cross section between II-II in FIG. 1; FIG. 3 is a cross-sectional view showing a display device of a comparative example, corresponding to FIG. 2; FIG. 10 is an explanatory diagram for explaining dispersion of impact force when an object collides with a projecting portion of a housing according to a display device of a comparative example; FIG. 10 is a cross-sectional view showing deformation of the housing when an object collides with the display device of the comparative example; FIG. 10 is an explanatory diagram for explaining dispersion of impact force when an object collides with a protruding portion of the housing according to the display device of the first embodiment; FIG. 4 is a cross-sectional view showing deformation of the housing when an object collides with the display device of the first embodiment; It is a perspective view which shows the display apparatus of 2nd Embodiment. FIG. 11 is a perspective exploded view of a partial configuration in the display device of the second embodiment; FIG. 3 is a cross-sectional view showing the display device of the second embodiment, which corresponds to FIG. 2 ; FIG. 10 is an explanatory diagram for explaining deformation when an object collides with the curved housing of the comparative example; FIG. 9 is a view of the deformation of the housing of FIG. 8 as seen from another angle; FIG. 11 is a cross-sectional view showing deformation of the housing when an object collides with the display device of the second embodiment; FIG. 11 is a cross-sectional view showing a configuration example of another housing; FIG. 5 is a diagram showing an example of arrangement of reinforcing parts on the back surface of the housing; FIG. 10 is a diagram showing another arrangement example of the reinforcing portion on the back surface of the housing; FIG. 11 is a cross-sectional view showing a configuration example of another housing;

An embodiment of the present invention will be described below with reference to the drawings. In addition, in each of the following embodiments, portions that are the same or equivalent to each other will be described with the same reference numerals.

(First embodiment)
A display device 1 of the first embodiment will be described with reference to FIGS. 1 to 4B. The display device 1 of the present embodiment is preferably applied to, for example, an in-vehicle display device mounted in a vehicle such as an automobile, but can of course be applied to other uses.

In FIG. 1, in order to make the configuration of the display device 1 easier to understand, a portion of the outer shell of the transparent cover 2, which will be described later, which overlaps with a part of the housing 6, and the outer shell of the display panel 4 covered with the transparent cover 2 are indicated by dashed lines. showing.

[Basic configuration]
For example, as shown in FIG. 1, the display device 1 of the present embodiment includes a transparent cover 2, a display panel 4, and a housing 6 having two protrusions 62. Two of the sides facing each other are surrounded by two projecting portions 62 . The display device 1 includes, for example, as shown in FIG. 4 and a circuit board 8 for display control. In the display device 1, for example, the display panel 4 is housed in a concave portion 61 formed in the front surface 6a of the housing 6 facing the back surface 2b of the transparent cover 2, and the display panel 4 is passed through the opening 63 of the housing 6. It is connected to a circuit board 8 arranged on the back surface 6 b side of the housing 6 via a wiring 7 .

The transparent cover 2 is a flexible transparent base material having a thickness of 1 mm or less, and is made of, for example, glass or tempered glass having a thickness of 0.7 mm or less, or a rigid and translucent resin material (such as polycarbonate). A different plate material can be used. In this specification, a case where the transparent cover 2 is made of a glass plate with a thickness of 0.7 mm or less will be described as a typical example. The transparent cover 2 has the display panel 4 attached via the optical adhesive layer 3 to a region of the back surface 2 b that is positioned inside the recess 61 of the housing 6 . The transparent cover 2 is adhered to the front surface 6 a of the housing 6 with the adhesive 5 arranged outside the concave portion 61 of the housing 6 . The front surface 2 a of the transparent cover 2 is the surface opposite to the housing 6 , and the back surface 2 b is the surface facing the housing 6 .

The optical adhesive layer 3 is, for example, an optical adhesive such as OCA (abbreviation of Optical Clear Adhesive) or OCR (abbreviation of Optical Clear Resin). The optical adhesive layer 3 is arranged in a gap between the display surface of the display panel 4 on which various images are displayed and the rear surface 2b of the transparent cover 2, and bonds them together. For example, as shown in FIG. 2, the optical adhesive layer 3 has substantially the same plane size as the display panel 4, and is attached to the back surface 2b of the transparent cover 2 or the display panel 4 in advance before the transparent cover 2 is attached to the housing 6. is placed on the display surface of

The display panel 4 is, for example, an organic light emitting diode (OLED) panel and has a flexible structure. In the case of the display panel 4, for example, in the case of an OLED panel (also called an organic EL panel), thin film transistors (TFTs) and OLED elements forming pixels are laminated in this order on a substrate made of a flexible resin material. It is assumed that the The display panel 4 is connected to a circuit board 8 via wiring 7 made of, for example, FPC (abbreviation of flexible printed circuits), and various display controls are performed.

The circuit board 8 is, for example, an electronic control unit in which a power supply circuit, a cooling fan, a CPU, a ROM, a RAM and an I/O are mounted on a wiring board. ) side. The arrangement of the wiring 7 and the circuit board 8 in the housing 6 can be changed as appropriate.

Moreover, the display panel 4 is not limited to an OLED panel as long as it is a flexible panel that can display various images and can follow the bending of the transparent cover 2 due to the deformation of the housing 6 . In addition, since the configuration and materials used for the OLED panel and other flexible panels are well known, detailed description thereof will be omitted in this specification.

The adhesive 5 is an adhesive used for directly adhering the transparent cover 2 to the housing 6, and for example, general adhesives such as acrylic, urethane, and silicone can be used. The adhesive 5 is applied, for example, to the transparent cover 2 or the housing 6 using a dispenser or the like.

The housing 6 is a member to which the transparent cover 2 is adhered with the adhesive 5 and has a concave portion 61 serving as a storage space for the display panel 4 attached to the transparent cover 2 . The housing 6 is made of, for example, a metal material with high thermal conductivity such as Al (aluminum) or Mg (magnesium), an alloy material thereof, or a lightweight resin material, and radiates the heat of the display panel 4 to the outside. It plays a role as a heat dissipation member. The housing 6 has, for example, a concave portion 61 having a plane size larger than that of the display panel 4 on the front surface 6 a facing the transparent cover 2 . The housing 6 has, for example, an opening 63 that communicates with the back surface 6 b in the bottom surface of the recess 61 , and the wiring 7 that connects the display panel 4 and the circuit board 8 is arranged in the opening 63 .

The housing 6 has two protruding portions 62 whose tip end faces 62a protrude beyond the surface 2a of the transparent cover 2 in a region located outside the recessed portion 61 and outside the outline of the transparent cover 2 on the front surface 6a. have. For example, as shown in FIGS. 1 and 2, the two projecting portions 62 extend along two opposing sides of the sides forming the outer shell of the transparent cover 2, and extend outward on both sides of the two sides. are placed. The two protruding portions 62 are arranged, for example, one outside each of the two sides located at the upper end and the lower end of the outer shell of the transparent cover 2 when the display device 1 is in use. The upper edge can be referred to as the "upper edge", and what lies outside the lower edge can be referred to as the "lower edge".

The two protruding portions 62 have an inner side surface 62b that faces the transparent cover 2, and an outer side surface 62c that faces away from the transparent cover 2. part is an inclined surface. Specifically, the outer side surface 62c is, for example, an inclined surface that is inclined in a direction away from the transparent cover 2 as the distance from the tip surface 62a increases. From the viewpoint of suppressing breakage at the end of the transparent cover 2, which will be described later, it is preferable that the outer surface 62c be the above-described inclined surface at least in the area from the tip surface 62a to the same height position as the surface 2a of the transparent cover 2. Note that the “height position” here means, for example, a position in a direction along the direction normal to the tip surface 62 a , that is, in a direction along the thickness direction of the housing 6 . On the other hand, the two protruding portions 62 are, for example, vertical surfaces in which the inner side surfaces 62b on the recessed portion 61 side are perpendicular to the tip surface 62a. In this case, the two protrusions 62 have a substantially trapezoidal structure in a cross-sectional view, as shown in FIG. 2, for example. The outer side surface 62c may be an inclined surface over the entire area from the tip surface 62a to the rear surface 6b of the housing 6 .

The two protruding portions 62 prevent any object from directly colliding with the end portion of the transparent cover 2 by having the tip surface 62 a protruding from the surface 2 a of the transparent cover 2 . The two protruding portions 62 are configured to protrude from the surface 2a of the transparent cover 2 by, for example, about 0.3 mm in the normal direction with respect to the surface 2a. At least a part of the outer side surface 62c of the two protrusions 62 is an inclined surface. It plays a role of facilitating relative deformation of the central portion sandwiched between 62 . As a result, local deformation of the end portion of the transparent cover 2 due to the deformation of the housing 6 can be suppressed, and damage to the end portion of the transparent cover 2 can be prevented. Details of this will be described later.

The housing 6 has a region sandwiched between the two projecting portions 62, that is, a central portion overlapping the transparent cover 2 or the display panel 4 (hereinafter referred to as a “central portion” for convenience) has a rigidity greater than that of the two projecting portions 62. It also has a low configuration. In other words, the housing 6 has a structure in which the thickness of the two protruding portions 62 is thicker than that of the central portion, and the central portion is easier to deform than the two protruding portions 62 .

It should be noted that the housing 6 is not limited to the example shown in FIG. There may be. In this case, the frame portion (not shown) has, for example, the same height as the surface 2 a of the transparent cover 2 and is lower than the two projecting portions 62 .

The above is the basic configuration of the display device 1 of the present embodiment.

[Effect of projecting part]
Next, the effect of suppressing breakage of the end portion of the transparent cover 2 by the projecting portion 62 will be described in comparison with the display device 100 of the comparative example using a housing having no portion corresponding to the projecting portion 62 .

In the display device 100 of the comparative example, for example, as shown in FIG. The structure is such that it is housed in the recess 11 of the body 10 . The housing 10 has a convex portion 12 protruding from a front surface 10 a facing the transparent cover 2 , and the top surface 12 a of the convex portion 12 is at the same height as the surface 2 a of the transparent cover 2 . In addition, the outer surface 12b of the convex portion 12, which is the surface on the side opposite to the transparent cover 2 among both side surfaces sandwiching the top surface 12a, is an orthogonal surface perpendicular to the top surface 12a. That is, the display device 100 of the comparative example has a configuration in which the top surface 12a of the projection 12 of the housing 10 is positioned on the same plane as the surface 2a of the transparent cover 2, and the outer surface 12b is not inclined.

Here, a case where an object collides head-on with the convex portion 12 of the housing 10 will be considered.

For example, as shown in FIG. 3B, when an object M (such as an iron ball) collides with the protrusion 12, a force F1 is generated in the housing 10 from the front surface 10a toward the rear surface 10b. The force F1 can be considered as a combined force of a force F2 acting along the side surface of the convex portion 12 and a force F3 acting along the top surface 12a toward the transparent cover 2 side. The force F2 acts to deform the portion of the housing 10 including the convex portion 12 toward the back surface 10b, and the force F3 acts to buckle the convex portion 12 toward the transparent cover 2 side. The force F2 is relatively larger than the force F3 because the outer surface 12b of the convex portion 12 is an orthogonal surface. As a result, only a portion of the housing 10 including the protrusion 12 is locally deformed toward the rear surface 10b, as shown in FIG. 3C, for example. As a result, the transparent cover 2 is deformed by following the local deformation of the convex portion 12 at the end portion of the housing 10 that is adhered to the proximate region of the convex portion 12, and the stress concentrates on the end portion, resulting in breakage. Resulting in.

On the other hand, in the display device 1 of the present embodiment, the housing 6 has a tip surface 62a that protrudes from the surface 2a of the transparent cover 2, and has a protruding portion 62 in which at least a portion of the outer surface 62c is an inclined surface. It is a configuration that A part of the outer surface 62c of the projecting portion 62 extending from the tip surface 62a forms an inclined surface that recedes from the transparent cover 2 toward the rear surface 6b, so that the object M collides with the inclined surface. .

When the object M collides with the inclined surface of the projecting portion 62, a force F1 directed from the front surface 6a toward the rear surface 6b is generated in the housing 6, as shown in FIG. 4A, for example. Further, the inclined surface of the outer side surface 62c disperses the collision force of the object M in the direction along the inclined surface to generate force F2. Therefore, the force F1 can be considered as a combined force of the force F2 acting in the direction along the outer surface 62c of the projecting portion 62 and the force F3 acting in the direction toward the transparent cover 2 along the tip end surface 62a. can. Since the force F2 acts toward the outside of the housing 6 as compared with the comparative example, the action of deforming the portion including the projecting portion 62 toward the back surface 6b is relatively small. Since the force F3 acts toward the central portion of the housing 6 compared to the comparative example, the effect of buckling the projecting portion 62 toward the transparent cover 2 is relatively large. That is, since the inclined surface of the projecting portion 62 disperses the impact load of the object M into the force F2 and the force F3, the force F1 is alleviated compared to the comparative example.

again. The housing 6 has a structure in which the thickness of the two protruding portions 62 is larger than the thickness of the central portion, and the central portion is relatively easily deformed. As a result, as shown in FIG. 4B, for example, the central portion of the housing 6 is deformed instead of the projecting portion 62, and local deformation of the projecting portion 62 and its vicinity is suppressed. As a result, the transparent cover 2 is prevented from being locally deformed at the end portion near the projecting portion 62, and is prevented from being damaged near the end portion.

Further, as shown in FIGS. 3C and 4B, when the deformation amounts in the direction from the front surface to the rear surface of the housing are represented by ΔX1 and ΔX2, respectively, the deformation amount ΔX2 of the housing 6 causes a large amount of buckling at the central portion. It is larger than the deformation amount ΔX1 of the body 10 . From a different point of view, if Δt is the time it takes for the housing to stop deforming after the object M collides with it, Δt becomes longer as the amount of deformation of the housing increases. become longer. When the collision energy by the object M is the same, the collision force per unit time is smaller in the housing 6 with longer Δt than in the housing 10 . In other words, the housing 6 has a structure that can reduce the impact force from the object M more than the housing 10 of the comparative example by including the protruding portion 62 having the inclined surface.

Further, in the display device 1, the transparent cover 2 is directly bonded to the housing 6 with the adhesive 5, and no other member such as a bracket is interposed between the transparent cover 2 and the housing 6. This structure makes it difficult for a force to locally bend the end of the cover 2 to occur.

According to the present embodiment, the display device 1 is such that the housing 6 to which the transparent cover 2 is adhered has two projecting portions 62, the tip surfaces 62a of which protrude from the surface 2a of the transparent cover 2, and the outer surface 62c of the projecting portion 62a. At least part of it is an inclined surface that recedes from the transparent cover 2 toward the rear surface 6b. When an object collides with the protruding portion 62 adjacent to the end of the transparent cover 2, the housing 6 absorbs the impact force of the object by the inclined surface of the protruding portion 62, and the central portion is preferentially deformed. It has a structure that As a result, the display device 1 has a structure in which the end portion of the transparent cover 2 is less likely to locally deform due to the deformation of the housing 6, and damage at the end portion of the transparent cover 2 is suppressed.

(Second embodiment)
A display device 1 of the second embodiment will be described with reference to FIGS. 5 to 7. FIG.

In FIG. 5, as in FIG. 1, the portion of the outline of the transparent cover 2 that overlaps with a portion of the housing 6 and the outline of the display panel 4 covered with the transparent cover 2 are indicated by broken lines. In FIG. 6, overlapping portions of the outer shells of the constituent members of the display device 1 are indicated by dashed lines, and the wiring 7 and the circuit board 8 are omitted for the sake of clarity.

In the display device 1 of the present embodiment, for example, as shown in FIG. It differs from the first embodiment in that it has a curved surface shape that follows the curved portion. In this embodiment, this difference will be mainly described.

In this embodiment, the transparent cover 2 has a curved shape with a concave surface 2a. For example, as shown in FIG. 6, the transparent cover 2 is flat before being attached to the housing 6, and as shown in FIG. It has a curved surface shape that follows the shape, and is adhered to the housing 6 with an adhesive 5 . That is, the transparent cover 2 is formed into a bent shape along the curved surface of the housing 6 by cold bending, and is adhered to the housing 6 by the adhesive 5, so to speak, by a backward bending method while maintaining the bent shape. It is held in the housing 6 . As a result, the display device 1 of the present embodiment has a structure in which the transparent cover 2 is formed in advance in a curved shape along the curved portion of the housing 6 and is adhered to the housing 6, which is a so-called tip bending method. 6, and the manufacturing cost is reduced.

Hereinafter, for convenience of explanation, the bent state in which the surface 2a of the transparent cover 2 is concave may be referred to as "concave bending".

After the display panel 4 is attached by the optical adhesive layer 3, the transparent cover 2 is attached to the housing using, for example, a roll (not shown) or a jig having a curved surface shape that follows the curved shape of the front surface 6a of the housing 6. 6 is pasted together.

In this embodiment, the display panel 4 has a curved shape that follows the concavely bent transparent cover 2, but before the transparent cover 2 is attached to the housing 6, it has a flat plate shape like the transparent cover 2. ing.

In this embodiment, the adhesive 5 is, for example, liquid or paste immediately after the transparent cover 2 and the housing 6 are bonded together. It hardens while it is held in a curved shape, and finally becomes a solidified state.

The housing 6 has a curved surface shape that is concave at least on the front surface 6a side. In this embodiment, for example, as shown in FIG. 6, the housing 6 has a substantially rectangular shape when viewed from the front surface 6a side, and extends along the lateral direction, that is, in the direction connecting the two projecting portions 62. The front surface 6a has a curved shape that is concave along the line.

Hereinafter, for convenience of explanation, as shown in FIG. 6, the curved direction of the housing 6 along the direction connecting the two protrusions 62 will be referred to as a "bending direction DR1", and the direction perpendicular to the bending direction will be referred to as an "orthogonal direction". DR2”.

The housing 6 has, for example, a shape in which the front surface 6a and the rear surface 6b are curved along the curved direction DR1, while the direction along the extending direction of the two protrusions 62, that is, the orthogonal direction DR2 is not curved. Structure. The housing 6 has, for example, a curved surface shape in which the back surface 6b is convex along the curved direction DR1, but is linear in the orthogonal direction DR2.

For example, as shown in FIGS. 6 and 7, the outer side surfaces 62c of the two projections 62 are inclined surfaces in which the entire area from the tip surface 62a to the back surface 6b is inclined in a direction away from the inner surface 62b toward the back surface 6b. It has become.

The above are the differences between the display device 1 of the present embodiment and the first embodiment.

Next, the effect of the projecting portion 62 of the housing 6 in the display device 1 of the present embodiment will be described in comparison with a comparative example using the housing 10 that does not have a portion corresponding to the projecting portion 62. FIG.

For example, as shown in FIG. 8, the housing 10 of the comparative example has a concave portion 11 on the front surface 10a, and has a curved shape in which the front surface 10a is concave and the back surface 10b is convex. It has a convex portion 12 instead of 62 . The protruding portion 12 has a degree of protruding such that when the transparent cover 2 is attached to the front surface 10a, the tip surface thereof is at the same height as the surface 2a of the transparent cover 2. As shown in FIG. The outer surface of the projection 12 opposite to the recess 11 is an orthogonal surface perpendicular to the tip end surface.

Hereinafter, as indicated by arrows in FIGS. 8 to 10, for convenience of explanation, the direction from the front surface to the rear surface of the housing is referred to as the “x direction”, and along the direction perpendicular to the x direction and in which the housing is not curved. The direction perpendicular to the plane formed by xy is called the "z direction". The y-direction is a direction corresponding to the orthogonal direction DR2. The z-direction is the direction that connects the two protrusions 12 or protrusions 62 and is the direction along the up-down direction of the housing in use.

For example, as shown in FIG. 8 , when an object M collides with the convex portion 12, the casing 10 of the comparative example does not have the convex portion 62, so the collision force of the object M cannot be reduced, and the convex portion 12 is locally deformed such that it bends in the x direction on the back surface 6b side. When the transparent cover 2 is adhered to the housing 10 of the comparative example, the end portion of the transparent cover 2 follows the deformation in the x direction near the convex portion 12 and becomes locally bent, which may cause damage. be.

Further, in the case 10 of the comparative example, the degree of protrusion of the protrusion 12 is smaller than that of the protrusion 62, and the rigidity is low. Therefore, for example, as shown in FIG. can be bent in the x-direction. That is, the case 10 of the comparative example can be bent three-dimensionally by adding the deformation of the protrusion 12 in the xy direction to the local deformation in the vicinity of the protrusion 12 in the xz direction. When the transparent cover 2 is adhered to the housing 10 of this comparative example, the transparent cover 2 cannot follow the three-dimensional bending of the housing 10 and is highly likely to be damaged.

On the other hand, in the housing 6 having the two protruding portions 62, the impact force by the object M is dispersed by the outer side surface 62c, which is an inclined surface, and the rigidity of the central portion is smaller than that of the protruding portion 62. The portion deforms earlier than the vicinity of the projecting portion 62 . As a result, as shown in FIG. 10, for example, the housing 6 is deformed such that the projecting portion 62 on the upper end side as a whole collapses in the x direction, and is deformed into a substantially flat plate shape as a whole. Moreover, since the rigidity of the protruding portion 62 is higher than that of the central portion of the housing 6, the deformation of the housing 6 in the xy directions as shown in FIG. 9 is also suppressed. In this case, even if the transparent cover 2 is adhered to the housing 6, the transparent cover 2 does not bend locally at the end, and returns to the flat plate shape before being adhered to the housing 6, causing internal stress (restoration). damage is suppressed because the force) is only relaxed.

According to the present embodiment, the display device 1 that is a curved surface display device can obtain the same effects as those of the first embodiment.

(Other embodiments)
It should be noted that the display device 1 shown in each of the above-described embodiments is an example of the display device 1 of the present invention, and is not limited to each of the above-described embodiments. Appropriate changes are possible within the range. For example, the display device 1 may have various combinations and forms of one element or all of the above or the following embodiments within a possible range.

(1) In the display device 1, for example, as shown in FIG. 11, the housing 6 has two protrusions 62 on the rear surface 6b, regions located in the vicinity thereof, or both, and reinforcing portions 64 for increasing rigidity. It may be a configuration having. The reinforcing portion 64 has, for example, a plate-like shape protruding from the rear surface 6b and is provided along the direction in which the two protruding portions 62 are connected. For example, as shown in FIG. 12, a plurality of reinforcing portions 64 are provided on the rear surface 6b of the housing 6 and are arranged parallel to each other, but are not arranged in the central portion of the housing 6 on the rear surface 6b. As a result, the housing 6 has a structure in which rigidity is lower in the center portion than in the end portions where the projecting portions 62 are provided. The effect of suppressing local deformation of is improved.

Note that the reinforcing portion 64 may have a higher rigidity at the end portion of the housing 6 where the two protruding portions 62 are formed than at the central portion. It may be a honeycomb structure, as shown, or other shapes.

In addition, in FIG. 12, in order to make the arrangement of the reinforcing portion 64 easy to understand, the outline of the portion of the reinforcing portion 64 hidden by the circuit board 8 is indicated by a broken line. Further, the number, arrangement, shape, dimensions, and the like of the reinforcing portions 64 are not limited to the examples shown in FIGS. 12 and 13, and may be changed as appropriate.

(2) In the display device 1, for example, as shown in FIG. The thickness of the part where 65 is formed may be thinner than other parts. In this case, the central portion of the housing 6 has lower rigidity than other portions of the housing 6 and is easily deformed. As a result, the effect of suppressing local deformation in the projecting portion 62 and its vicinity is improved. The second recesses 65 are not limited to the example shown in FIG. 14, and the depth, shape, number, planar size, etc. thereof may be changed as appropriate.

2... Transparent cover 2a... Front surface 2b... Back surface 4... Display panel 6... Housing 6a... Front surface 6b... Back surface 62... Protruding part 62a... Tip surface, 62c... Outer surface, 64... Reinforcing part

Claims (7)

A display device,
a transparent cover (2) having a front surface (2a) and a back surface (2b);
a display panel (4) attached to the back surface of the transparent cover;
A housing (6) to which the transparent cover is attached,
The housing has, on the front surface (6a) facing the transparent cover, two projections (62) with tip surfaces (62a) projecting from the surface of the transparent cover,
The two protrusions are arranged along two sides of the outer shell of the transparent cover facing each other and on both outer sides sandwiching the two sides, and are outside the upper end and the lower end of the transparent cover when the display device is in use. and is thicker than a portion of the housing facing the display panel,
At least a part of the outer surface (62c) of the two protrusions located on the opposite side of the transparent cover is an inclined surface that is inclined in a direction away from the transparent cover as it separates from the tip surface. Device. At least a portion of the housing facing the back surface of the transparent cover has a curved shape curved in a direction recessed from the front surface,
2. The display device according to claim 1, wherein said transparent cover follows said curved shape and has a curved surface shape in which said surface is concave. 3. The display device according to claim 1, wherein said outer surface is said inclined surface at least in a region from said tip surface to a height position of said surface of said transparent cover. 4. The transparent cover according to any one of claims 1 to 3, wherein the transparent cover is a plate member made of glass or rigid resin material having a thickness of 1 mm or less, and has a flat plate shape before being attached to the housing. display device. The housing has a reinforcing portion (64) for increasing rigidity on the back surface (6b) opposite to the transparent cover,
5. The display device according to any one of claims 1 to 4, wherein the reinforcing portion is arranged on two of the protrusions or a region located near the protrusions on the back surface. 3. The housing has at least a partial region, which is thinner than the rest of the housing, including a central portion located in the center in a direction connecting the two sides of the portion facing the transparent cover. 6. The display device according to any one of 1 to 5. A part of the back surface (6b) opposite to the transparent cover of the housing, including at least the central portion, is a concave portion (65) recessed toward the front surface of the housing. 7. The display device according to 6.

Images