JP2015072380A - Display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a display device having less risk that a protective panel member is damaged.SOLUTION: A display panel 10 displays an image. A protective panel member 20 allows the image to be seen therethrough. A case body 30 is provided in an outer periphery of the protective panel member 20. The display panel 10 is pasted on the protective panel member 20 with translucency adhesive 15. The case body 30 has an elastic resin material 31 for wrapping the outer peripheral part of the protective panel member 20 and a hard resin material 32 for wrapping the elastic resin material 31.

Description

  The present invention relates to a display device including a display panel for displaying an image.

  As a conventional display device, for example, there is one disclosed in Patent Document 1. Such a display device has a structure in which a transparent cover plate and a liquid crystal display are bonded with a UV curable adhesive. As a result, the space between the transparent cover plate and the air layer is filled with the UV curable adhesive, and reflection at the interface with the air layer that has conventionally existed is reduced to improve the image quality.

JP 2009-25833 A

  However, the display device described in Patent Document 1 uses inorganic glass as a transparent cover plate, and ensures adhesion by a UV curable adhesive between the transparent cover plate and the liquid crystal display. When the cover plate is used for a vehicle meter case body, the transparent cover plate is attached to the meter case with an adhesive, but there is room for improvement in consideration of productivity. In order to solve such problems, it is conceivable to set the transparent cover plate in the mold, injection mold the case body, and integrally mold the case body and the transparent cover plate to improve productivity. There was a risk of breakage due to cracking due to molding pressure or differences in thermal expansion coefficients due to different materials after molding.

  The present invention includes a display panel for displaying an image, a protective panel member capable of seeing through the image, and a case body provided on an outer periphery of the protective panel member, and the display panel is a translucent adhesive. In the display device adhered to the protective panel member, the case body includes an elastic resin material that covers an outer peripheral portion of the protective panel member, and a hard resin material that covers the elastic resin material. is there.

  In the present invention, the protective panel member includes a cover plate having a corner portion having an arc shape when viewed from the front.

  In the present invention, the protective panel member includes a cover plate and a film attached to the front surface of the cover plate.

  In the present invention, at least on the front surface of the protection panel member, the elastic resin material is covered with the hard resin material, and the elastic resin material is not exposed.

  By providing the elastic resin material that covers the outer peripheral portion of the protective panel member, there is little possibility that the protective panel member is damaged.

The front view which shows 1st embodiment of this invention. Sectional drawing which shows embodiment same as the above. The principal part expanded sectional view which shows embodiment same as the above. The block diagram which shows embodiment same as the above. The principal part expanded sectional view which shows 2nd embodiment of this invention. Sectional drawing which shows 3rd embodiment of this invention. Sectional drawing which shows 4th embodiment of this invention.

  Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings. 1 to 4 show a first embodiment.

  The vehicle display device includes a liquid crystal display panel 10, a cover plate 20, a case body 30, a circuit board 40, a lid body 50, and a middle case 60. The liquid crystal display panel 10 includes a TFT color liquid crystal module, and displays vehicle information such as vehicle speed. The liquid crystal display panel 10 may be of a multi-dot or segment type, and may be a single color display or a full color display. The display panel may be an EL module. The liquid crystal display panel 10 is optically coated with a translucent adhesive 15 and is in close contact with the rear surface of the cover plate 20. The translucent adhesive 15 is a UV curable adhesive.

  The cover plate 20 is made of transparent inorganic glass having a flat plate shape, and has a rectangular shape when viewed from the front. The cover plate 20 is insert-molded in the case body 30. A light shielding portion 21 made of a black print layer is formed on the rear surface of the cover plate 20, and the light shielding portion 21 becomes a rectangular window portion 21 b that allows the image of the liquid crystal display panel 10 to be seen through and a warning display portion. And a circular window portion 21c.

  The case body 30 includes an elastic resin material 31 and a hard resin material 32. The elastic resin material 31 is made of elastomer resin, and the outer peripheral portion of the cover plate 20 is covered with the elastic resin material 31 as shown in FIG. The hard resin material 32 of the case body 30 is made of a resin such as AES, and is integrally formed so as to cover the elastic resin material of the cover plate 20.

  The case body 30 covers the outer periphery of the cover plate 20 so as to cover the side end surface of the cover plate 20. In the space within the case body 30, the liquid crystal display panel 10, the circuit board 50, and the middle case 60 are accommodated. A rectangular opening 30 a is formed in the case body 30.

  The circuit board 40 is formed by forming a wiring pattern made of copper foil on a base material made of glass epoxy resin, and a light emitting element 41 is mounted thereon. The light emitting element 41 is disposed at a location corresponding to the window portion 21 c of the light shielding portion 21. The lid 50 is made of a resin such as AES or PP. The lid body 50 is fixed to the rear surface of the case body 30 by screws 51. The middle case 60 is made of an opaque resin (PP or the like), and the circuit board 40 is disposed on the rear surface side of the middle case 60. The middle case 60 has a through hole 61 formed at a location corresponding to the light emitting element 41.

  FIG. 4 is a block diagram showing an electrical configuration of the vehicle display device. The microcomputer 100 has a CPU 101, a ROM 102, and a RAM 103. The speed sensor 110 detects the vehicle speed and outputs speed data to the microcomputer 100. The microcomputer 100 drives the liquid crystal display panel 10 and the light emitting element 41 based on a predetermined program stored in the ROM 102.

  FIG. 5 shows a second embodiment. The second embodiment differs from the first embodiment only in the hard resin material 33, and the other configuration is the same as that of the first embodiment.

  The case body 30 includes an elastic resin material 31 and a hard resin material 33. The hard resin material 33 of the case body 30 is made of resin such as AES, and is integrally formed so as to cover the elastic resin material 31 of the cover plate 20. On the front side of the cover plate 20, the elastic resin material 31 is covered with the hard resin material 33, and the elastic resin material 31 is not exposed. The elastic resin material 31 may be covered with the hard resin material 33 not only on the front surface side of the cover plate 20 but also on the rear surface.

  By providing the elastic resin materials 31 and 33 that cover the outer peripheral portion of the cover plate 20 as in the first and second embodiments, stress applied to the cover plate 20 is relieved, so that the cover plate 20 is less likely to be damaged. .

  The present invention is not limited to the first and second embodiments, and various modifications can be made. For example, as in the third embodiment shown in FIG. 6, the four corners of the cover plate 22 may be arcuate. Further, as in the fourth embodiment shown in FIG. 7, a cover panel 20 having a film 25 attached to the front surface may be used as the protective panel member. As the film 25, a film having functions such as antireflection, antifouling, blackout prevention, and infrared ray cutting can be considered.

10 Liquid crystal display panel (display panel)
15 Translucent adhesive 20 Cover plate (protective panel member)
22 Cover plate (protective panel member)
25 Film 30 Case body 31 Elastic resin material 32 Hard resin material 33 Hard resin material

Claims (4)

A display panel for displaying an image; a protective panel member capable of seeing through the image; and a case body provided on an outer periphery of the protective panel member, wherein the display panel is protected by a translucent adhesive. A display device bonded to a panel member,
The said case body has the elastic resin material which covers the outer peripheral part of a protection panel member, and the hard resin material which covers the said elastic resin material, The display apparatus characterized by the above-mentioned.   The display device according to claim 1, wherein the protection panel member includes a cover plate having a corner portion having an arc shape when viewed from the front.   The display device according to claim 1, wherein the protection panel member includes a cover plate and a film attached to a front surface of the cover plate.   The display device according to claim 1, wherein the elastic resin material is covered with the hard resin material at least on a front surface of the protective panel member, and the elastic resin material is not exposed.

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