Display device

Abstract

To hold a cover glass on a case by an adhesive agent and prevent the adhesive agent from dripping.SOLUTION: A display device comprises: an image display panel 7 on which an image is displayed; a translucent cover glass 2 which is positioned on a front side face of the image display panel 7; and a case 4 which holds the cover glass 2 together with the image display panel 7. A reference face 4B to which the cover glass 2 at the side of the image display panel 7 is abutted is formed in the case 4 and an inclined face 4C for holding an adhesive agent which is away from the cover glass 2 toward an inner peripheral side of the reference face 4B is formed at the inner peripheral side.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a display device, and can be applied to a display device that displays vehicle information, for example. [Background technology]

[0002] Conventionally, a device related to a display device that displays vehicle information has been proposed (Patent Document 1). This Patent Document 1 discloses a device for improving design by providing a case so as to support a light-transmitting substrate (cover glass) from the back side, and providing a portion visible to a viewer on the outer periphery of the light-transmitting substrate in this case. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2018-40747 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, in the configuration disclosed in Patent Document 1, when the light-transmitting substrate serving as the cover glass is held to the case by adhesive, there is a risk that the adhesive may drip and run off. SUMMARY OF THE PRESENT EMBODIMENT The present invention has been made in consideration of the above points, and has as its object to hold the cover glass to the case with an adhesive so that the adhesive does not drip off. [Means for solving the problem]

[0005] In order to solve the above problem, the invention of claim 1 comprises: a light-transmitting cover glass located on the front side of the display unit; a case that holds the cover glass together with the display unit, the case is formed with an abutment portion against which the display unit side of the cover glass abuts, The inner periphery of the contact portion is formed with an inclined portion for holding adhesive, the inclined portion being away from the cover glass as it goes toward the inner periphery.

[0006] The invention of claim 2 is, in the configuration of claim 1, The inclined portion has projections and recesses. Effect of the Invention

[0007] According to the present invention, a convex stripe is formed surrounding the outer periphery of the cover glass, and a reference surface (contact portion) against which the cover glass abuts is formed on the inner periphery of this convex stripe, and a slope (inclined portion) for retaining adhesive is formed on the inner periphery of this reference surface, which moves away from the cover glass as it moves toward the inner periphery.This allows the cover glass to be positioned by the reference surface to prevent the adhesive from leaking out toward the convex stripe, and further allows the adhesive to be retained between the slope and the cover glass, thereby preventing the adhesive from dripping off.

[0008] Furthermore, according to the configuration of claim 2, the inclined surface is formed with projections and recesses, which can further prevent the adhesive from dripping off. [Brief description of the drawings]

[0009] [Figure 1] FIG. 1 is a plan view of a display device according to a first embodiment of the present invention. [Diagram 2] 2 is a cross-sectional view taken along line AA in FIG. 1. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] (First embodiment) 1 is a plan view of a display device according to a first embodiment of the present invention. This display device 1 is a display device that displays vehicle information in a vehicle. The display device 1 is formed in a horizontally long rectangular shape, and a display area AR for image information is provided in the center, and various vehicle information is displayed in this display area AR.

[0011] FIG. 2 is an enlarged cross-sectional view partially showing an end portion of the display device 1 taken along line AA in FIG.

[0012] The display device 1 includes a cover glass 2, a light-shielding layer 3, a case 4, an optical adhesive layer 5, an image display panel 7 as a display unit, and an adhesive 8.

[0013] Here, the cover glass 2 is formed of, for example, inorganic glass having light transmissivity, and is configured as a protective panel member placed on the forefront of the display device 1, further reducing external light reflection. The cover glass 2 is configured to have an outer shape slightly larger than that of the image display panel 7. The light-shielding layer 3 is formed in a substantially frame shape on the rear surface side of the cover glass 2 (more specifically, on the periphery of the rear surface side of the cover glass 2) by printing with black-based printing ink, and is provided to conceal the non-display area of ​​the image display panel 7 and the internal structure of the display device 1.

[0014] The cover glass 2 may be made of any material as long as it has light-transmitting properties, and may be made of, for example, a semi-transparent material having a dark color (smoke).

[0015] The image display panel 7 is, for example, a liquid crystal display panel, but may be an organic EL (Electro Luminescence) panel. The image display panel 7 is attached to the back side of the cover glass 2 via a light-transmitting optical adhesive layer 5, is held by the cover glass 2, and is disposed in the case 4 together with the light-transmitting cover glass 2. The optical adhesive layer 5 is, for example, made of a silicone material.

[0016] The case 4 is made of resin containing PC and ABS, and has a generally box-like shape with slanted sides (peripheral wall portions located on the sides of the image display panel 7) and an opening on the upper end face. The case 4 holds the cover glass 2 together with the image display panel 7, and is provided for mounting to the instrument panel of the vehicle.

[0017] When the cover glass 2 is placed on the front side of the image display panel 7, the case 4 has a convex stripe 4A formed of convex parts that surrounds the outer periphery of the cover glass 2, and furthermore, on the inner periphery of the convex stripe 4A, a reference surface 4B is formed as an abutment part with which the side surface of the image display panel 7 of the cover glass 2 abuts, and this reference surface 4B positions the cover glass 2. Furthermore, on the inner periphery of the reference surface 4B of the case 4, a slope (inclined part) 4C for holding adhesive is formed that becomes farther away from the cover glass 2 as it moves inward.

[0018] The display device 1 is formed by applying adhesive 8 to the inclined surface 4C and / or the vicinity of the inclined surface 4C, placing the cover glass 2 holding the image display panel 7 on the case 4, and curing the adhesive 8. An epoxy material is used as the adhesive 8.

[0019] This allows the display device 1 to position the cover glass 2 using the reference surface 4B, preventing the adhesive 8 from leaking out onto the convex strip 4A side, and further allows the adhesive 8 to be retained between the inclined surface 4C and the cover glass 2, thereby preventing the adhesive 8 from dripping off.

[0020] Furthermore, the slope 4C of the case 4 has an uneven surface with a generally sawtooth cross section. In other words, the uneven surface of the slope 4C means a portion that is not completely flat (not smooth). This makes it possible to further prevent the adhesive from dripping down (for example, onto the inner wall surface of the peripheral wall portion that faces the image display panel 7 due to the action of gravity).

[0021] According to the above configuration, case 4 is formed with a reference surface 4B against which cover glass 2 abuts, and on the inner circumferential side of this reference surface 4B is formed a sloped surface 4C for retaining adhesive which becomes farther away from cover glass 2 as it moves inward. Therefore, reference surface 4B positions cover glass 2 to prevent adhesive 8 from leaking out toward convex strip 4A, and adhesive 8 can be retained between sloped surface 4C and cover glass 2, thereby preventing adhesive 8 from dripping off.

[0022] Furthermore, by forming projections and recesses on the inclined surface 4C, the adhesive can be prevented from dripping off even further.

[0023] (Other embodiments) Although specific configurations suitable for carrying out the present invention have been described in detail above, the configurations of the above-described embodiments can be modified in various ways without departing from the spirit of the present invention. [Explanation of symbols]

[0024] 1 Display device 2. Coverslip 3 Light blocking layer 4 Cases 4A Convex strip 4B Reference surface (contact part) 4C Slope (slanted part) 5 Optical adhesive layer 7 Image display panel (display section) 8. Adhesive

Claims

1. a light-transmitting cover glass located on the front side of the display unit; a case that holds the cover glass together with the display unit, the case is formed with an abutment portion against which the display unit side of the cover glass abuts, The inner periphery of the contact portion is formed with an inclined portion for holding adhesive, the inclined portion being away from the cover glass as it goes toward the inner periphery. Display device.

2. The inclined portion has projections and recesses. The display device according to claim 1 .

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