JP2017227767A - Display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a display device achieving such a design that an area of a light-shielding part enclosing an image display screen can be reduced.SOLUTION: An inner side face 29B of a frame 28B on an upper side of a case 28 is brought into contact with an upper end face 12A of a liquid crystal panel 12 so as to allow a first adhesive 4 on a liquid crystal panel 12 side to hold a part of the load applied to a window glass 2 to support an illumination member 14. Thus, a load applied to a second adhesive 5, that is, the load for supporting the illumination member 14 can be significantly reduced, and thereby, an adhesive area of the second adhesive 5 can be reduced as much. Since the area of the light-shielding part 3 for concealing the second adhesive 5 can be decreased, a display device with a design that cannot be achieved in the prior art can be provided.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a display device.

  In recent years, it has been proposed to construct a display device such as a digital signage by attaching a liquid crystal panel to a transparent substrate such as a window glass via an adhesive (see, for example, Patent Document 1). According to this display device, a passerby can check the display content of the liquid crystal panel from the outside of the store or office via the window glass, so that it can be effectively used as a signboard, an advertisement, or the like.

WO2015 / 072380

  FIGS. 9A, 9 </ b> B, and 9 </ b> C are explanatory diagrams illustrating an example of an assembly procedure of the conventional display device 100.

  As shown in FIG. 9A, the adhesive 104 is applied to the surface 102A to be attached of the transparent substrate 102, and the image display surface 106A of the liquid crystal panel 106 is attached to the adhesive 104 without any gaps. Next, as illustrated in FIG. 9B, an illumination member 112 including a backlight 108 and a case 110 that holds the backlight 108 is attached so as to cover the liquid crystal panel 106 from the back surface 106 </ b> B side of the liquid crystal panel 106. Fix to surface 102A. In this fixing work, first, the end surface 110B of the frame portion 110A of the case 110 is brought into contact with the surface to be pasted 102A, and the end surface 106D of the peripheral portion 106C of the liquid crystal panel 106 is surrounded by the frame portion 110A through a predetermined gap a. . By this operation, the case 110 (illumination member 112) is positioned with respect to the liquid crystal panel 106. Thereafter, as shown in FIG. 9C, the case 110 is fixed to the adherend surface 102A using an L-shaped attachment member 114. Specifically, the double-sided adhesive tape 116 is bonded to the surface 102A to be applied located outside the frame portion 110A, and the attachment member 114 is bonded to the double-sided adhesive tape 116. Next, the frame portion 110 </ b> A is fixed to the mounting member 114 using a fastening member 118 such as a bolt. Thereby, the case 110 (illumination member 112) is joined to the to-be-bonded surface 102A via the attachment member 114 and the double-sided adhesive tape 116. The display device 100 is assembled through such operations.

  In the display device having such a structure, the light-shielding portion 120 is provided in a bonding area formed on the surface to be bonded 102 </ b> A of the transparent substrate 102 and in a frame-shaped bonding area of the double-sided adhesive tape 116. A rectangular area surrounded by the light shielding portion 120 coincides with an area of the image display surface of the liquid crystal panel 106. Further, the design of the display device 100 is not impaired by hiding the mounting member 114 and the electric wiring board by the light shielding portion 120.

  As one of the design variations of the display device 100, a demand for reducing the area of the light shielding unit 120 is assumed. However, when the area of the light-shielding portion 120 is reduced, the area of the double-sided adhesive tape 116 is reduced, and illumination supported by the transparent substrate 102 only by the double-sided adhesive tape 116 due to a decrease in the adhesive strength of the double-sided adhesive tape 116. The member 112 may fall off the transparent substrate 102, and the backlight 108 may not be able to properly illuminate the liquid crystal panel 106.

  Therefore, in the conventional display device 100, from the viewpoint of holding the illumination member 112, the area of the double-sided adhesive tape 116 cannot be reduced, and as a result, it is difficult to reduce the area of the light-shielding portion 120. There was a problem that a display device could not be made.

  The present invention has been made in view of such circumstances, and an object of the present invention is to provide a display device capable of realizing a design for reducing the area of a light shielding portion surrounding an image display surface.

  In order to achieve the object of the present invention, a first aspect of the display device of the present invention is a display device in which a liquid crystal panel and an illuminating member are arranged in this order on one surface of a transparent substrate arranged along a substantially vertical direction. The liquid crystal panel is bonded to one surface of the transparent substrate via the first adhesive, and the illumination member includes a backlight and a substantially concave case that houses the backlight and has a frame portion and a bottom surface. The lighting member is bonded to one surface of the transparent substrate by one or more mounting members that are attached to the outer surface of the frame portion of the case and a second adhesive that bonds the mounting member to one surface of the transparent substrate. In the case, the inner side surface of the upper frame portion of the case is in contact with at least the upper end surface of the liquid crystal panel.

  In order to achieve the object of the present invention, a second aspect of the display device of the present invention is a display device in which a liquid crystal panel and an illumination member have in this order on one surface of a transparent substrate arranged along a substantially vertical direction. The liquid crystal panel is bonded to one surface of the transparent substrate via the first adhesive, and the illumination member includes a backlight and a substantially concave case that houses the backlight and has a frame portion and a bottom surface. The lighting member is bonded to one surface of the transparent substrate by one or more mounting members that are attached to the outer surface of the frame portion of the case and a second adhesive that bonds the mounting member to one surface of the transparent substrate. The attachment member is in contact with at least the upper end surface of the liquid crystal panel.

  According to the present invention, since the first pressure-sensitive adhesive on the liquid crystal panel side can have a part of the load for supporting the lighting member on the transparent substrate, the load applied to the second pressure-sensitive adhesive can be reduced. Therefore, the adhesion area of the second pressure-sensitive adhesive can be reduced. As a result, according to the display device of the present invention, it is possible to realize a design that reduces the area of the light shielding portion surrounding the image display surface.

  In the first aspect, by bringing the inner side surface of the upper frame portion of the case into contact with the upper end surface of the liquid crystal panel, a part of the load for supporting the illumination member on the transparent substrate is used as the first pressure-sensitive adhesive on the liquid crystal panel side. Can have.

  In the second aspect, the first pressure-sensitive adhesive on the liquid crystal panel side can have a part of the load for supporting the illumination member on the transparent substrate by bringing the attachment member and the upper end surface of the liquid crystal panel into contact with each other.

  In another aspect of the present invention, it is preferable that the inner side surface or the mounting member of the upper frame portion of the case of the lighting member is in contact with at least the upper end surface of the liquid crystal panel via an intermediate support member.

  According to this aspect, a part of the load for supporting the lighting member on the transparent substrate by bringing the inner side surface or the mounting member of the upper frame portion of the case into contact with the upper end surface of the liquid crystal panel via the intermediate support member Can be imparted to the first pressure-sensitive adhesive on the liquid crystal panel side.

  Moreover, in another aspect of the present invention, the intermediate support member preferably has a Young's modulus of 0.5 GPa to 3 GPa.

Moreover, in another aspect of the present invention, the first pressure-sensitive adhesive preferably has a shear elastic modulus of 1 × 10 ² Pa to 1 × 10 ⁶ Pa at 25 ° C. and 1 Hz.

  According to another aspect of the present invention, the transparent substrate has a first transparent substrate and a second transparent substrate, and one surface of the first transparent substrate and the other surface of the second transparent substrate are formed by the third adhesive. It is preferable that a liquid crystal panel, a first pressure-sensitive adhesive, a lighting member, a mounting member, a second pressure-sensitive adhesive, and a light-shielding part are provided on one side of the second transparent substrate.

  According to the display device of the present invention, since the area of the light shielding portion surrounding the image display surface can be reduced, it is possible to provide a display device having a design that has been difficult to realize in the past.

The top view of the display apparatus of 1st Embodiment Rear view of the display device of the first embodiment Sectional view along AA 'in FIG. Rear view of display device showing other arrangement of mounting member The principal part expanded sectional view of the display apparatus of 2nd Embodiment. The principal part expanded sectional view of the display apparatus of 3rd Embodiment. The principal part expanded sectional view of the display apparatus of 4th Embodiment. The principal part expanded sectional view of the display apparatus of 5th Embodiment (A), (B), (C) is explanatory drawing which showed an example of the assembly procedure of the conventional display apparatus.

  Hereinafter, preferred embodiments of a display device according to the present invention will be described with reference to the drawings. The present invention is not limited to the following embodiments, and various modifications and substitutions can be made to the following embodiments within the scope of the present invention.

  Here, the “transparent substrate” described in the present specification means that a liquid crystal panel is provided on one surface of the transparent substrate, and when the display image of the liquid crystal panel is viewed from the other surface of the transparent substrate, the entire display image or It refers to a substrate having a transparency that is partially visible through a transparent substrate with almost no optical distortion. Therefore, the “transparent substrate” has a low visible light transmittance even if a part of light incident on the transparent substrate from the liquid crystal panel is absorbed or reflected by the transparent substrate or due to a change in optical phase or the like. Even if it is a thing, what is necessary is just to be able to visually recognize the display image of a liquid crystal panel with almost no optical distortion through a transparent substrate. Moreover, the structure which affixed the several transparent substrate with the adhesive may be sufficient as a transparent substrate. This transparent substrate will be described later with reference to the drawing (FIG. 8).

  Hereinafter, in the main embodiment, a transparent resin plate such as a glass plate, polycarbonate, or polymethyl methacrylate can be used as the transparent substrate disposed along the substantially vertical direction. Moreover, as a transparent substrate, a laminated glass, laminated glass, and a laminate of a glass plate and a resin plate can be used.

  As a transparent substrate, a glass plate is highly transparent with respect to light emitted from and reflected from a liquid crystal panel, and has light resistance, low birefringence, high planar accuracy, surface scratch resistance, and high mechanical strength. Is preferably used.

  Examples of the material of the glass plate include those widely used as building materials such as openings of structures such as soda lime glass and interior members. In addition, a highly transmissive glass with lower iron content and less bluishness can be used. Furthermore, tempered glass or laminated glass can be used to increase safety.

  In the present embodiment, a single-piece window glass will be described as an example of the “transparent substrate”. Moreover, about each drawing demonstrated by embodiment, in order to make each component easy to understand, the scale of a dimension may be varied depending on the component.

<Display Device of First Embodiment>
A display device 10A of the first embodiment is shown in FIGS. 1 is a plan view of a display device 10A according to the first embodiment, FIG. 2 is a rear view of the display device 10A according to the first embodiment, and FIG. 3 is a cross-sectional view taken along line AA ′ of FIG. FIG. That is, in FIG. 3, a display device 10 </ b> A configured by attaching the liquid crystal panel 12 to the one surface 2 </ b> B of the window glass 2 via the first adhesive 4 is shown. In FIG. 3, the backlight 16 constituting the illumination member 14 is shown in a simplified manner for easy understanding.

  The display device 10A of the first embodiment shown in FIGS. 1 to 3 is a display device that the liquid crystal panel 12 and the illumination member 14 have in this order on one surface 2B of the window glass 2 arranged along a substantially vertical direction. . The liquid crystal panel 12 is bonded to the one surface 2B of the window glass 2 via the first adhesive 4, and the illumination member 14 accommodates the backlight 16 and the backlight 16, and includes the frame portion 28B and the bottom surface 28D. And a substantially concave case 28. The illuminating member 14 has a window formed by one or more attachment members 20 attached to the outer surface 29A of the frame portion 28B of the case 28 and a second adhesive 5 that bonds the attachment member 20 to the one surface 2B of the window glass 2. The case 28 is joined to one surface 2B of the glass 2, and the case 28 has an inner side surface 29B of the upper frame portion 28B of the case 28 in contact with at least the upper end surface 12A of the liquid crystal panel 12.

<Window glass 2>
Window glass 2 has one surface 2B on which liquid crystal panel 12 and illumination member 14 are arranged, and the other surface 2A. The display surface can be freely changed depending on the orientation of the other surface 2A and the one surface 2B. For example, when the window glass 2 is an opening of a structure, if the outside is the other surface 2A, the display surface can be directed outward. On the other hand, if the inner surface is the other surface 2A, the display surface can be directed to the inner side of the structure.

  The shape of the window glass 2 may be larger than the area of the liquid crystal panel 12. The planar shape of the window glass 2 is not particularly limited as long as it is larger than the area of the image display surface of the rectangular liquid crystal panel 12 to be attached by the first adhesive 4. In FIG. 1, the window glass 2 has a rectangular shape as an example, but the window glass 2 may have a curved side or a circle. The thickness of the window glass 2 is preferably about 2.0 mm to 5.0 mm from the viewpoint of mechanical strength, transparency, and the like, but is not limited thereto.

<Light shielding part 3>
The light shielding portion 3 is provided on the one surface 2 </ b> B of the window glass 2 at a position having the mounting member 20 and the end surface 28 </ b> C of the case 28. For example, as shown in FIG. 1, the window glass 2 is formed in a frame shape along the four sides of the rectangular window glass 2 when viewed from the normal direction of the window glass 2. Here, out of the entire area of the window glass 2, a rectangular area 2 </ b> C (hereinafter also referred to as a translucent part) surrounded by the light shielding part 3 substantially coincides with the area of the image display surface of the liquid crystal panel 12.

  The light shielding part 3 can directly form, for example, a ceramic paint containing a black pigment on the one surface 2B of the window glass 2 using a screen printing method. Further, as will be described later with reference to FIG. 8, the light shielding portion 3 is formed on the one surface 36B or the other surface 36A of the second transparent substrate 36, and the second transparent substrate 36 is a part of the window glass 2 that is the first transparent substrate. The form fixed to the direction 2B with the 3rd adhesive 38 may be sufficient.

  Since the display device 10A according to the first embodiment has the light-shielding portion 3, the window glass 2 is viewed from the other surface 2A side after the liquid crystal panel 12 is attached to the one surface 2B of the window glass 2 by the first adhesive 4. Sometimes, the outside area of the area of the image display surface of the liquid crystal panel 12 can be hidden by the light shielding portion 3. Thereby, when the window glass 2 is viewed from the other surface 2 </ b> A side, a wiring member such as a flexible printed wiring board connected to the liquid crystal panel 12 is hidden by the light shielding portion 3. Further, a frame portion 28 </ b> B of the case 28 of the illumination member 14, which will be described later, and a mounting member 20 provided on the frame portion 28 </ b> B of the case 28 are also hidden by the light shielding portion 3. Thereby, when the window glass 2 is viewed from the other surface 2A side, only the image display surface of the liquid crystal panel 12 surrounded by the light shielding portion 3 is visible. In addition, the thickness of the light-shielding part 3 is several microns to several hundred microns, for example.

<First adhesive 4>
The display device 10 </ b> A of the first embodiment includes a first adhesive 4 that attaches the liquid crystal panel 12 to the one surface 2 </ b> B of the window glass 2. The liquid crystal panel 12 is held on the window glass 2 by the first adhesive 4.

The shear modulus of the first pressure-sensitive adhesive 4 at 25 ° C. and 1 Hz is preferably 1 × 10 ² Pa to 1 × 10 ⁶ Pa. If the first pressure-sensitive adhesive 4 having a shear modulus in this range is used, the liquid crystal panel 12 can be sufficiently held on the window glass 2. For the same reason, the shear modulus, 1 × more preferably ^{10 3 Pa~1 × 10 5 Pa,} 1 × 10 3 Pa~1 × 10 4 Pa out still more preferred. About 0.1-2.0 mm is preferable and, as for the thickness of the 1st adhesive 4, about 0.2-0.8 mm is more preferable.

  As a raw material of the 1st adhesive 4, a photocurable resin composition is mentioned, Specifically, an acrylic resin composition, a silicone resin composition, and an epoxy resin composition are mentioned.

<Second adhesive 5>
The display device 10 </ b> A of the first embodiment has a second adhesive 5 that attaches the attachment member 20 to the one surface 2 </ b> B of the window glass 2. The 2nd adhesive 5 is affixed on the area | region which has the light-shielding part 3 of the one surface 2B of the window glass 2. As shown in FIG. Therefore, the attachment member 20 is affixed to the area having the light shielding portion 3.

  The 2nd adhesive 5 may use the same material as the 1st adhesive 4, and may use a different material. For example, a double-sided adhesive tape (3M Company Acrylic Foam Structure Bonding Tape VHB (registered trademark)) can be used.

<LCD panel 12>
The liquid crystal panel 12 is a main component member obtained by removing the illumination member 14, the drive circuit 22, the power supply circuit 24, the connection connector 26, and the like shown in FIG. 2 from a liquid crystal display (not shown). The configuration of the liquid crystal panel 12 is well known. For example, a liquid crystal is sealed between a TFT element substrate provided with a thin film transistor and a CF substrate provided with a color filter, and the TFT element substrate is provided. And the CF substrate are sandwiched between a pair of polarizing plates. Of the pair of polarizing plates described above, the polarizing plate facing the one surface 2B of the window glass 2 is attached to the one surface 2B of the window glass 2 by the first adhesive 4. As a result, the liquid crystal panel 12 is fixed to the window glass 2. The thickness of the liquid crystal panel 12 is, for example, 0.2 mm to 1.0 mm.

  The driving method of the liquid crystal panel 12 is not particularly limited, and examples thereof include a horizontal electric field method such as in-plane switching. Moreover, although embodiment demonstrates the form which affixes the liquid crystal panel 12 directly on the one surface 2B of the window glass 2 with the 1st adhesive 4, it is not limited to this. For example, the second transparent substrate may be interposed between the one surface 2B of the window glass 2 and the liquid crystal panel 12. This form will be described later with reference to FIG. In the case of this form, the transparent member formed by laminating the second transparent substrate 36 and the window glass 2 with the third adhesive 38 corresponds to the transparent substrate of the present invention.

<Lighting member 14>
The illuminating member 14 is disposed on one surface 2B of the window glass 2 and houses a plate-like backlight 16 that illuminates the liquid crystal panel 12, and the backlight 16, and has a frame portion 28B and a bottom surface 28D. A rectangular case 28 is included. The drive circuit 22, the power supply circuit 24, the connection connector 26, and the like are fixed at predetermined positions on the back plate 28A of the case 28.

  The backlight 16 as a surface light source includes a light emitting element such as a light emitting diode, a light guide plate, one or a plurality of optical films such as a prism sheet and a light diffusion sheet, and a mirror as necessary. Light emitted from the light emitting element is reflected by a mirror while entering the light guide plate and guiding the inside, and is emitted toward the liquid crystal panel 12 through the optical film. The optical film has functions of making the intensity of light emitted from the light guide plate uniform, changing the viewing angle, and improving the light use efficiency. Therefore, the optical film and the liquid crystal panel 12 are arranged at intervals as necessary.

  The case 28 is made of, for example, metal, and includes a back plate 28A having a bottom surface 28D and a frame portion 28B having a position substantially perpendicular to the back plate 28A. The frame portion 28B may be provided along the entire peripheral edge portion of the back plate 28A, or may be provided intermittently with a part cut away. The case 28 is configured by press-molding, for example, an aluminum plate-like material having a plate thickness of 1 mm, and the weight is reduced.

  As shown in FIG. 3, the end surface 28 </ b> C of the frame portion 28 </ b> B of the case 28 is provided in the region of the light shielding portion 3 on the one surface 2 </ b> B of the window glass 2. In the present embodiment, the end face 28 </ b> C is in contact with the light shielding unit 3. The inner side surface 29B of the upper frame portion 28B of the case 28 and the upper end surface 12A of the liquid crystal panel 12 are in contact with each other. In the present specification, the inner side surface 29B of the frame portion 28B refers to a surface facing the end surface 12A of the liquid crystal panel 12. Since it has the above-described configuration, the illumination member 14 uses two adhesion forces of the second adhesive 5 that attaches the mounting member 20 described later to the window glass 2 and the first adhesive 4 that attaches the liquid crystal panel 12. , Bonded to one surface 2B of the window glass 2. By setting it as such a structure, when the area of the 2nd adhesive 5 becomes small with the area of the light-shielding part 3 becoming small, even if the illumination member 14 may become heavy, the illumination member 14 is made into window glass. 2 can be fixed without shifting or peeling off.

<Mounting member 20>
The illumination member 14 has one or more attachment members 20 that are joined to the outer surface 29A of the frame portion 28B of the case 28. The lighting member 14 is fixed to the one surface 2B of the window glass 2 using the mounting member 20. More specifically, the base 20 </ b> A of the attachment member 20 is attached to the region having the light shielding part 3 on the one surface 2 </ b> B of the window glass 2 with the second adhesive 5. And the attachment member 20 and the outer side surface 29A of the frame part 28B of the case 28 are joined. Thereby, the illumination member 14 is joined to the one surface 2B of the window glass 2 through the attachment member 20. In the first embodiment, an angle is used as the attachment member 20, and the attachment member 20 and the outer surface 29 </ b> A of the frame portion 28 </ b> B of the case 28 are joined by the bolt 30. Examples of the bolt 30 include a hexagon socket head cap screw with a nominal thread diameter of M3, which is defined by Japanese Industrial Standards (JIS B1176: 2006). In addition, the joining method of the attachment member 20 and the outer side surface 29A of the frame portion 28B of the case 28 is not limited to a method using a bolt.

  Further, the attachment member 20 is disposed on the outer surface 29A of the frame portion 28B of the case 28. As shown in FIG. 2, one attachment member 20 can be used for each side, and the frame portion 28 </ b> B can be disposed. Moreover, as shown in FIG. 4, you may arrange | position one or more attachment members 20 in each edge | side. In the form of FIG. 4, the short mounting members 20 are arranged at a predetermined interval, or the long mounting members 20 are arranged at a predetermined interval and the ends are abutted with each other.

[Assembly Procedure of Display Device 10A of First Embodiment]
As shown in FIG. 3, the display device 10 </ b> A according to the first embodiment affixes the image display surface of the liquid crystal panel 12 to the one surface 2 </ b> B of the window glass 2 through the first adhesive 4 without gaps, and then the illumination member 14. Is arranged and fixed at a fixed position with respect to the liquid crystal panel 12.

  The illuminating member 14 causes the end surface 28C of the frame portion 28B of the case 28 to abut the light shielding portion 3, and causes the inner side surface 29B of the upper frame portion 28B of the case 28 to contact the upper end surface 12A of the liquid crystal panel 12. The illumination member 14 is positioned with respect to the liquid crystal panel 12. At this time, the illumination member 14 is supported in the vertical direction by the liquid crystal panel 12.

  Next, the base portion 20 </ b> A of the attachment member 20 is bonded to the second adhesive 5, and the wall portion 20 </ b> B of the attachment member 20 and the outer side surface 29 </ b> A of the frame portion 28 </ b> B of the case 28 are fastened by the bolts 30. Accordingly, the illumination member 14 is supported in the vertical direction by the liquid crystal panel 12 and the attachment member 20 with respect to the one surface 2B of the window glass 2. The display device 10A is assembled by the above procedure.

  In the display device 10 </ b> A of the first embodiment, the inner side surface 29 </ b> B of the upper frame portion 28 </ b> B of the case 28 is in contact with the upper end surface 12 </ b> A of the liquid crystal panel 12. That is, by placing the inner side surface 29 </ b> B of the upper frame portion 28 </ b> B of the case 28 on the upper end surface 12 </ b> A of the liquid crystal panel 12, a portion of the load that causes the window glass 2 to support the illumination member 14 is reduced. The first pressure-sensitive adhesive 4 on the side is provided. The area of the first adhesive 4 is several times the area of the second adhesive 5. As a result, the load applied to the second pressure-sensitive adhesive 5, that is, the load that supports the lighting member 14 is significantly reduced, so that the bonding area of the second pressure-sensitive adhesive 5 can be reduced by that amount. Therefore, since the area of the light-shielding portion 3 surrounding the image display surface of the liquid crystal panel 12 can be reduced, it is possible to provide the display device 10A having a design that has been difficult to realize in the past.

  As for the area of the light-shielding part 3, comparing the width H1 of the light-shielding part 3 with the width H2 of the conventional light-shielding part 120 shown in FIG. 9, the width H1 could be reduced by about 55% with respect to the width H2. . For example, what conventionally required a width H2 of 40 mm to 45 mm could be changed to a width H1 of 18 mm to 20 mm. Of course, in the first embodiment, the attachment member 20 having a size corresponding to the width H1 is used.

  In the display device 10A, the inner side surface 29B of the frame portion 28B is coated with, for example, a fluororesin so that the inner side surface 29B of the frame portion 28B of the metal case 28 is brought into direct contact with the end surface 12A of the liquid crystal panel 12. preferable. As a result, it is possible to prevent the end surface 12A from being damaged at the time of contact, and the inner side surface 29B of the frame portion 28B of the case 28 slides smoothly with respect to the end surface 12A when positioning it in contact. Will improve.

[Display Device 10B of Second Embodiment]
FIG. 5 is an enlarged cross-sectional view of the upper portion of the display device 10B of the second embodiment. In addition, the same code | symbol is attached | subjected about the same or similar member as display apparatus 10A of 1st Embodiment shown in FIG. 3, and the description is abbreviate | omitted.

  In the display device 10B of the second embodiment, the liquid crystal panel 12 and the illumination member 14 are in this order on one surface 2B of the window glass 2 arranged along a substantially vertical direction. It is bonded to one surface 2B of the window glass 2 via the first adhesive 4. The illumination member 14 includes a backlight 16 and a substantially concave case 28 that houses the backlight 16 and has a frame portion 28B and a bottom surface 28D. The lighting member 14 includes one or more attachment members 32 attached to the outer side surface 29A of the frame portion 28B of the case 28, and the second adhesive 5 that bonds the attachment member 32 to the one surface 2B of the window glass 2. The attachment member 32 is in contact with at least the upper end face 12 </ b> A of the liquid crystal panel 12. Specifically, the inner surface 32 </ b> D of the mounting member 20 located on the upper side is in contact with the upper end surface 12 </ b> A of the liquid crystal panel 12. In FIG. 5, only the inner surface 32D of the mounting member 32 is in contact with the end surface 12A of the liquid crystal panel 12, but the inner surface 32D of the mounting member 32 and the inner side surface 29B of the upper frame portion 28B of the case 28 are It may be in contact with end face 12A. In the present specification, the inner surface 32D of the mounting member 32 refers to the surface of the mounting member 32 that faces the end surface 12A of the liquid crystal panel 12.

  More specifically, the attachment member 32 in the present embodiment is configured in a T-shaped cross section including a base portion 32A, a wall portion 32B, a flange portion 32C, and an inner surface 32D. The base portion 32 </ b> A and the flange portion 32 </ b> C are fixed to the one surface 2 </ b> B of the window glass 2 by the second adhesive 5, and this portion is hidden by the light shielding portion 3. The attachment member 32 is adhered to the one surface 2B of the window glass 2 by the second adhesive 5 in a state where an inner surface 32D formed at the lower portion of the flange portion 32C is in contact with the upper end surface 12A of the liquid crystal panel 12. . Then, the frame portion 28B of the case 28 is fixed to the wall portion 32B by the bolts 30.

  As described above, the display device 10 </ b> B according to the second embodiment is a load that supports the illumination member 14 on the window glass 2 by bringing at least the inner surface 32 </ b> D of the attachment member 32 into contact with the upper end surface 12 </ b> A of the liquid crystal panel 12. Is provided on the first adhesive 4 on the liquid crystal panel 12 side. Thereby, since the load applied to the second pressure-sensitive adhesive 5, that is, the load that supports the lighting member 14 is reduced, the bonding area of the second pressure-sensitive adhesive 5 can be reduced. Therefore, since the area of the light shielding portion 3 can be reduced, it is possible to provide a display device 10B having a design that has been difficult to realize in the past.

  Here, in the display device 10B of FIG. 5, the width of the light shielding portion 3 is the width corresponding to the length that contacts the end surface 12A of the liquid crystal panel 12 from the frame portion 28B of the case 28 as compared with the display device 10A of FIG. Increases by H3. However, since the width H3 is about 1 mm, there is no influence as compared with a reduction of about 55% of the width of the light shielding portion 3 according to the present invention. From this point of view, the width H3 is preferably set to a width that is equal to or greater than 0 and does not affect the reduction in the width of the light shielding portion 3.

  In the display device 10B, since the inner surface 32D of the mounting member 32 is in direct contact with the end surface 12A of the liquid crystal panel 12, the mounting member 32 is made of resin, or when the mounting member 32 is made of metal, fluororesin is applied to the inner surface 32D. It is preferable to coat. Thereby, it is possible to prevent the end surface 12A from being damaged when the inner surface 32D of the mounting member 32 contacts the end surface 12A of the liquid crystal panel 12.

[Display Device 10C of Third Embodiment]
FIG. 6 is an enlarged cross-sectional view of the upper part of the display device 10C of the third embodiment. In addition, the same code | symbol is attached | subjected about the same or similar member as display apparatus 10A of 1st Embodiment shown in FIG. 4, and the description is abbreviate | omitted.

  In the display device 10 </ b> C of the third embodiment, the mounting member 20 and the upper end surface 12 </ b> A of the liquid crystal panel 12 are in contact with each other via the intermediate support member 34. In the third embodiment, with such a configuration, the first pressure-sensitive adhesive 4 on the liquid crystal panel 12 side has a part of the load for supporting the illumination member 14 on the window glass 2.

  Specifically, the intermediate support member 34 is continuously or intermittently disposed along the upper end surface 12A of the liquid crystal panel 12. The lower surface 34A of the intermediate support member 34 is brought into contact with the upper end surface 12A of the liquid crystal panel 12, the base surface 34B of the intermediate support member 34 is adhered to the second adhesive 5, and the positioning surface 34C facing the base surface 34B is attached to the case. The end face 28 </ b> C of the frame portion 28 </ b> B is in contact with the liquid crystal panel 12. The attachment of the attachment member 20 and the attachment of the attachment member 20 and the case 28 are the same as those of the display device 10A.

  As described above, the display device 10 </ b> C of the third embodiment supports the lighting member 14 on the window glass 2 by bringing the attachment member 20 and the upper end surface 12 </ b> A of the liquid crystal panel 12 into contact with each other via the intermediate support member 34. A part of the load to be applied is given to the first adhesive 4 on the liquid crystal panel 12 side. Thereby, since the load applied to the second pressure-sensitive adhesive 5, that is, the load that supports the lighting member 14 is reduced, the bonding area of the second pressure-sensitive adhesive 5 can be reduced. Therefore, since the area of the light-shielding part 3 that hides the second adhesive 5 can be reduced, it is possible to provide a display device 10C having a design that has been difficult to realize in the past.

[Display Device 10D of Fourth Embodiment]
FIG. 7 is an enlarged cross-sectional view of the upper part of the display device 10D of the fourth embodiment. In addition, the same code | symbol is attached | subjected about the same or similar member as the display apparatus 10C of 3rd Embodiment shown in FIG. 6, and the description is abbreviate | omitted.

  The display device 10 </ b> D of the fourth embodiment has a configuration in which the inner side surface 29 </ b> B of the upper frame portion 28 </ b> B of the case 28 and the upper end surface 12 </ b> A of the liquid crystal panel 12 are brought into contact with each other via the intermediate support member 34. Similarly, in the display device D of the fourth embodiment, the first pressure-sensitive adhesive 4 on the liquid crystal panel 12 side can have a part of the load for supporting the illumination member 14 on the window glass 2, so that the second pressure-sensitive adhesive is used. 5 can be reduced.

  Here, in the display devices 10C and 10D shown in FIGS. 6 and 7, the width of the light shielding portion 3 is in contact with the end surface 12A of the liquid crystal panel 12 from the frame portion 28B of the case 28 as compared with the display device 10A shown in FIG. The width H4 is increased by the length. However, since the width H4 is about several millimeters, there is no effect when compared with a reduction of about 55% of the width of the light shielding portion 3 according to the present invention. From this point of view, the width H4 is preferably set to a width that is equal to or greater than 0 and does not affect the reduction in the width of the light-shielding portion 3.

  In the display devices 10C and 10D, since the lower surface 34A of the intermediate support member 34 is in direct contact with the end surface 12A of the liquid crystal panel 12, the intermediate support member 34 is made of resin, or the intermediate support member 34 is made of metal. It is preferable to coat the lower surface 34A with a fluororesin. Thereby, when the lower surface 34A of the intermediate support member 34 contacts the end surface 12A of the liquid crystal panel 12, the end surface 12A can be prevented from being damaged.

  Furthermore, the Young's modulus of the intermediate support member 34 is preferably 0.5 GPa to 3 GPa in that the deformation of the intermediate member is suppressed even when a load is applied to the illumination member. If the intermediate support member 34 is deformed and the position of the backlight is deviated, the quality of the display image may be deteriorated, so that the problem is solved.

[Display Device 10E of Fifth Embodiment]
FIG. 8 is an enlarged cross-sectional view of the upper part of the display device 10E according to the fifth embodiment. In addition, the same code | symbol is attached | subjected about the same or similar member as display apparatus 10A of 1st Embodiment shown in FIG. 3, and the description is abbreviate | omitted.

  The display device 10E of the fifth embodiment includes the window glass 2 and the second transparent substrate 36, which are first transparent substrates, as the transparent substrates, and one side 2B of the window glass 2 and the other side of the second transparent substrate 36. 36A is stuck by the 3rd adhesive 38, and comprises the transparent substrate. The liquid crystal panel 12, the first pressure-sensitive adhesive 4, the illumination member 14, the mounting member 20, the second pressure-sensitive adhesive 5, and the light shielding portion 3 are provided on the one surface 36 </ b> B side of the second transparent substrate 36. In FIG. 8, the light shielding portion 3 is provided on the one surface 36B side of the second transparent substrate, but may be provided on the other surface 36A side. When the light shielding part 3 is provided on the other surface 36 </ b> A, the attachment member 20 and the end face 28 </ b> C of the case 28 are provided at a position overlapping the region having the light shielding part 3.

  Even if the display device 10E of the fifth embodiment is a transparent substrate composed of the window glass 2 that is the first transparent substrate and the second transparent substrate 36, the same effect as the display device 10A of the first embodiment, that is, The adhesion area of the second pressure-sensitive adhesive 5 can be reduced. Therefore, since the area of the light shielding part 3 that hides the second adhesive 5 can be reduced, it is possible to provide a display device 10E having a design that has been difficult to realize in the past. In addition, about the 3rd adhesive 38, the same adhesive as the 1st adhesive 4 can be used. Thereby, the 2nd transparent substrate 36 is fixed to the window glass 2 reliably.

  Although the display devices 10A, 10B, 10C, 10D, and 10E have been described as the embodiments of the present invention, the idea of the present invention is that the load of the illumination member is conventionally supported only by the second adhesive. It is to reduce the area of the light-shielding portion by causing a part of the load of the lighting member to be borne by the adhesive. In order to achieve this idea, the first, second, and fifth embodiments using the existing parts (the frame portion 28B of the case 28 and the mounting member 32) will be described, and other parts (the intermediate support member 34) will be used. The third and fourth embodiments have been described. However, since the idea of the present invention is as described above, the present invention is not limited to the first to fifth embodiments, and any form capable of achieving the idea of the present invention can be applied.

  DESCRIPTION OF SYMBOLS 2 ... Window glass, 2A ... The other side, 2B ... One side, 3 ... Light-shielding part, 4 ... 1st adhesive, 5 ... 2nd adhesive, 6 ... Protective film, 10A ... Display apparatus of 1st Embodiment, 10B Display device of the second embodiment, 10C ... Display device of the third embodiment, 10D ... Display device of the fourth embodiment, 10E ... Display device of the fifth embodiment, 12 ... Liquid crystal panel, 12A ... End face, 14 ... Illumination member, 20 ... mounting member, 20A ... base, 20B ... wall, 22 ... drive circuit, 24 ... power supply circuit, 26 ... connection connector, 28 ... case, 28A ... back plate, 28B ... frame, 28C ... end face, 28D ... bottom surface, 29A ... outside surface, 29B ... inside surface, 30 ... bolt, 32 ... mounting member, 32A ... base, 32B ... wall portion, 32C ... flange portion, 32D ... inner surface, 34 ... intermediate support member, 34A ... bottom surface , 34B ... Base surface, 34C Positioning surface, 36 ... second transparent substrate, 38 ... third adhesive

Claims (6)

A display device having a liquid crystal panel and a lighting member in this order on one surface of a transparent substrate arranged along a substantially vertical direction,
The liquid crystal panel is bonded to one surface of the transparent substrate via a first adhesive,
The illumination member includes a backlight, and a substantially concave case that houses the backlight and has a frame portion and a bottom surface,
The lighting member includes one or more mounting members that are attached to the outer surface of the frame portion of the case, and a second adhesive that bonds the mounting member to one surface of the transparent substrate. Are joined to
The case is a display device in which an inner side surface of an upper frame portion of the case is in contact with at least an upper end surface of the liquid crystal panel. A display device having a liquid crystal panel and a lighting member in this order on one surface of a transparent substrate arranged along a substantially vertical direction,
The liquid crystal panel is bonded to one surface of the transparent substrate via a first adhesive,
The illumination member includes a backlight, and a substantially concave case that houses the backlight and has a frame portion and a bottom surface,
The lighting member includes one or more mounting members that are attached to the outer surface of the frame portion of the case, and a second adhesive that bonds the mounting member to one surface of the transparent substrate. Are joined to
The display device, wherein the attachment member is in contact with at least an upper end surface of the liquid crystal panel.   The display device according to claim 1, wherein an inner side surface of the upper frame portion of the case or the mounting member of the lighting member is in contact with at least an upper end surface of the liquid crystal panel via an intermediate support member.   The display device according to claim 3, wherein the intermediate support member has a Young's modulus of 0.5 GPa to 3 GPa. The display device according to claim 1, wherein the first pressure-sensitive adhesive has a shear elastic modulus of 1 × 10 ² Pa to 1 × 10 ⁶ Pa at 25 ° C. and 1 Hz. The transparent substrate has a first transparent substrate and a second transparent substrate,
The one surface of the first transparent substrate and the other surface of the second transparent substrate are affixed by a third adhesive,
The said liquid crystal panel, the said 1st adhesive, the said illumination member, the said attachment member, the said 2nd adhesive, and the light-shielding part are provided in the one surface side of the said 2nd transparent substrate. Display device.

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