WO2013179814A1

WO2013179814A1 - Display device

Info

Publication number: WO2013179814A1
Application number: PCT/JP2013/061832
Authority: WO
Inventors: 昭一郎高橋; 賢一郎伊東
Original assignee: シャープ株式会社
Priority date: 2012-05-29
Filing date: 2013-04-23
Publication date: 2013-12-05

Abstract

This liquid crystal display device (10) is provided with: a liquid crystal display panel (11) having a display surface (DS); a touch panel (14) having an opposing surface which forms a shape opposite to the display surface (DS); a cover panel (15) which is on the side of the touch panel (14) opposite that of the liquid crystal display panel (11) and which has an overhang part (15EP) overhanging outwards beyond the outer edge of the touch panel (14); a touch panel drive circuit substrate (26) which is arranged on the side of the liquid crystal display panel (11) opposite that of the touch panel (14); a flexible substrate (27) which is electrically connected at one end to the end of the touch panel (14) and at the other end to the touch panel drive circuit substrate (26); and a frame (13) which forms a frame shape, which receives, on the side of the liquid crystal display panel (11), the overhang part (15EP) of the cover panel (15) and the outer peripheral part of the touch panel (14), which is arranged in a form interposed between the outer peripheral part of the touch panel (14) and the outer peripheral part of the liquid crystal display panel (11), and which forms an insertion hole (32) through which the flexible substrate (27) is inserted.

Description

Display device

The present invention relates to a display device.

In recent years, liquid crystal display devices using a touch panel have been installed in electronic devices such as tablet laptop computers and portable information terminals in order to improve operability and usability. This type of liquid crystal display device includes a display module in which a liquid crystal panel for displaying an image and a touch panel disposed on the display surface side of the liquid crystal panel are bonded to each other in an opposing manner. The touch panel has translucency and can input position information within the display surface of the liquid crystal panel by touching it with a finger or a touch pen, for example. As a result, an intuitive operation is possible in which the user directly touches the image displayed on the liquid crystal panel. As an example of a display device provided with such a touch panel, one described in Patent Document 1 below is known. In this device, the touch panel is directly bonded to a liquid crystal panel using an adhesive.

JP 2009-175701 A

(Problems to be solved by the invention)
As described above, when the touch panel is directly attached to the liquid crystal panel, when an external force is applied to the touch panel, the external force is directly transmitted to the liquid crystal panel, so that the liquid crystal panel has a display defect called pooling. There was a risk of it occurring. Such pooling tends to occur more easily as the screen size of the liquid crystal panel increases.

In order to prevent such pooling when the screen size of the liquid crystal panel is increased, it is preferable to leave a gap between the liquid crystal panel and the touch panel. Therefore, a frame-shaped member is provided between the liquid crystal panel and the touch panel. The inventor of the present application has studied to intervene. On the other hand, there is a case where a protective cover glass is disposed outside the touch panel, and in this case, the inventors of the present application have studied to adopt a configuration in which the cover glass is received by the frame-shaped member described above. However, since a flexible substrate connected to an external drive circuit substrate is connected to the end of the touch panel, when the frame-shaped member or cover glass as described above is installed, the flexible substrate can be routed. There was a risk of problems.

The present invention has been completed based on the above circumstances, and an object thereof is to easily route the connecting member.

(Means for solving the problem)
The display device of the present invention includes a display panel having a display surface for displaying an image, and a functional plate having translucency and having an opposing surface that is opposed to the display surface of the display panel. And a transparent member that protects the functional plate-like member and is translucent, and is disposed on the opposite side to the display panel side with respect to the functional plate-like member. A protective plate member having a surface and an overhanging portion projecting outward from the outer edge of the functional plate-like member, and being disposed on the side opposite to the functional plate-like member side with respect to the display panel A control member that controls driving for realizing the function of the functional plate-like member, and one end side is electrically connected to an end of the functional plate-like member, whereas the other end side is the control member. A connecting member electrically connected to the protective plate A frame shape that follows the projecting portion and the outer peripheral portion of the functional plate member, and the projecting portion of the protective plate material and the outer peripheral portion of the functional plate member are received on the display panel side, and And a frame formed between the outer peripheral portion of the functional plate member and the outer peripheral portion of the display panel and having an insertion hole through which the connecting member is inserted.

In this way, the image displayed on the display surface of the display panel is observed by the user of the display device through the functional plate member and the protective plate material both having translucency. The functional plate-like member is protected by a protective plate member having an overhanging portion that protrudes to the outside, and the driving thereof is controlled by a control member that is electrically connected via a connecting member. Between the outer peripheral part of the functional plate member and the outer peripheral part of the display panel, a frame-shaped frame is interposed so that a gap is provided between the functional plate member and the display panel. For example, even when an external force acts on the functional plate-like member and the functional plate-like member is deformed to bend toward the display panel, the bent functional plate-like member is applied to the display panel. It becomes difficult to interfere. As a result, it is difficult for a display defect to occur in the image displayed on the display panel, and the display quality is excellent. Also, compared to the case where the functional plate-like member is directly attached to the display panel without using a frame, the distance between the facing surfaces of the functional plate-like member and the display panel is within the plane. Uniformity can be easily achieved and the cost is excellent.

The frame is inserted through a connecting member that electrically connects the end of the functional plate member and the control member disposed on the opposite side of the functional plate member with respect to the display panel. Since the hole is formed, the connection member can be easily routed even though the outer peripheral portion of the functional plate member and the protruding portion of the protective plate material are received from the display panel side by the frame. In addition, the connecting member can be shortened and the frame portion of the display device can be narrowed as compared with the case where the connecting member is wound around the outside of the frame.

The following configuration is preferable as an embodiment of the present invention.
(1) On the plate surface of the outer peripheral portion of the protective plate material, a light shielding layer is formed that overlaps with each of the outer peripheral portions of the functional plate member and the display panel and blocks light in a manner of overlapping with the insertion hole. ing. In this way, the outer periphery of the functional plate member and the display panel can be prevented from being visually recognized by the user of the display device by the light shielding layer, and the insertion hole formed in the frame Can be prevented from being visually recognized by the user. Thereby, it is excellent in the external appearance, and the display quality concerning the image displayed on the display surface of the display panel can be enhanced.

(2) The outer peripheral portion of the functional plate member and the protruding portion of the protective plate material are attached to the frame. In this way, the outer peripheral portion of the functional plate member and the overhanging portion of the protective plate material are attached to the frame so that the respective holding is achieved. The number of parts can be reduced and the appearance is excellent as compared with the case where the holding is performed using a member pressed from the outside.

(3) A first fixing member for fixing the outer peripheral portion of the functional plate member and the frame, and a second fixing member for fixing the protruding portion of the protective plate material and the frame are provided. The insertion hole is disposed between the first fixing member and the second fixing member in the frame. If it does in this way, a functional plate-shaped member and a protection board material will adhere to a frame with the 1st adhering member and the 2nd adhering member, and stable maintenance will be attained. By inserting the insertion hole between the first fixing member and the second fixing member in the frame, the connection member can be inserted without preventing the functional plate member and the protective plate material from being fixed. Can do.

(4) At least a part of the frame is exposed to the outside so as to configure the appearance of the display device. In this way, since the frame constitutes the appearance of the display device, if the connecting member is turned around to the outside of the frame, the connecting member will be exposed to the outside, but the insertion hole The connecting member can be disposed inside the display device, and the appearance is excellent. In addition, when the connecting member is turned to the outside of the frame, it is conceivable to add a member that covers the connecting member. However, compared with that, the number of parts can be reduced and the whole can be kept small.

(5) An illuminating device that is disposed on a side opposite to the display surface side with respect to the display panel and that supplies light to the display panel is provided. The illuminating device includes a light source, the display panel And a light guide plate that is arranged on the opposite side to the display surface side, has an end surface facing the light source, and emits light from the plate surface toward the display panel, and the frame. And a chassis for holding the light source and holding the display panel and the light guide plate therebetween. In this way, when light from the light source is incident on the end face of the light guide plate, it is propagated through the light guide plate and then emitted toward the display panel. In the display panel, an image is displayed on the display surface using light supplied from the lighting device. The display panel and the light guide plate can be held between the functional plate member and the display panel so as to be sandwiched between the chassis and the chassis. Thereby, as compared with a case where a frame-like member is interposed between the light guide plate and the display panel, the display device can be reduced in thickness and the number of components can be reduced.

(6) The illumination device includes a light source substrate on which the light source is provided, and a part of the chassis has a facing surface that is opposed to the end surface of the light guide plate, It is set as the board | substrate attaching part by which a light source board | substrate is attached. In this way, the display panel and the light guide plate are held in a state of being sandwiched between the chassis and the frame in a state of being overlapped with each other, and a frame-like shape is provided between the light guide plate and the display panel. Since the members are not interposed, the light guide plate may be displaced in the thickness direction depending on the holding force of the chassis and the frame. In that respect, as described above, a part of the chassis has a facing surface that is opposed to the end surface of the light guide plate, and is a substrate mounting portion on which the light source substrate is mounted. As compared with the case where the member is attached to a member different from the chassis and the member is attached to the board attaching portion, an assembling error that can occur between the light source board and the substrate attaching portion can be reduced. In addition, by directly attaching the light source substrate to the surface facing the end surface of the light guide plate in the substrate mounting portion, the light source is arranged in a confronting manner with respect to the end surface of the light guide plate and easily aligned in the direction along the end surface. can do. Thereby, the position shift which may arise between the end surface and a light source about the direction along the end surface of a light-guide plate can be reduced. Accordingly, it is possible to improve the incident efficiency of light incident on the end surface of the light guide plate from the light source, and it is difficult for unevenness in luminance to occur in the light emitted from the plate surface of the light guide plate.

(7) The chassis is provided with a light guide plate support portion that supports the light guide plate from the side opposite to the display panel side, and a shape that bulges to the opposite side of the light guide plate side from the light guide plate support portion. In addition, the light source substrate mounted on the substrate mounting portion is accommodated and connected to the substrate mounting portion, while being attached in contact with the outer surface of the substrate housing portion. A heat radiating member is provided. If it does in this way, the accommodation space of the light source substrate attached to a substrate attachment part can be fully secured by the substrate accommodation part which swells to the opposite side to the light guide plate side rather than the light guide plate support part. As a result, it is possible to increase the degree of design freedom regarding the dimension of the light guide plate in the thickness direction of the light source provided on the light source substrate. It will be useful in. In addition, heat generated as the light source emits light is transmitted from the light source substrate and the substrate mounting portion to the substrate housing portion, and then transmitted to the light guide plate support portion and in contact with the outer surface of the substrate housing portion. It is transmitted to the heat radiating member to be attached. As described above, since the light source substrate is directly attached to the substrate attachment portion, heat from the light source is less likely to be dissipated than a case where the light source substrate is attached to the substrate attachment portion via a heat dissipation member. . In that respect, if the heat radiating member is attached so as to be in contact with the outer surface of the substrate housing portion as described above, sufficient heat radiation performance can be achieved while reducing the assembly error that may occur between the light source substrate and the substrate attachment portion. Can be supplemented.

(8) The heat dissipating member includes a first heat dissipating part that is parallel to and in contact with the outer surface of the substrate housing part, and a second heat dissipating part that is connected to the first heat dissipating part and is parallel to the substrate mounting part. The frame has a frame base that holds the display panel from the side opposite to the light guide plate, a frame that protrudes from the frame base along the second heat radiating portion, and is in contact with the second heat radiating portion. An attachment plate portion to be attached, and the insertion hole is disposed between the substrate attachment portion and the attachment plate portion. A communication cutout portion through which the connection member passes is formed by communicating with the insertion hole. In this way, the heat from the substrate housing portion is transferred from the first heat radiating portion to the second heat radiating portion in the heat radiating member, and then to the mounting plate portion of the frame that is attached in contact with the second heat radiating portion. Communicated. Thereby, since the heat radiation of the light source can be achieved using the frame, the heat radiation performance is further improved. In addition, the heat radiating member attached to the board housing part of the chassis and the mounting plate part of the frame is formed with a communication notch that communicates with an insertion hole located between the mounting plate part and the board mounting part. Therefore, the connecting member can be connected to the control member through the insertion hole and the communication notch.

(9) A gap is provided between the second heat radiating portion of the heat radiating member and the board mounting portion, and the insertion hole is disposed at a position facing the gap. In this way, the connection member passed through the insertion hole is controlled by being passed through the gap between the second heat radiating portion and the board mounting portion in addition to the communication notch portion of the heat radiating member. It is more easily routed to the member.

(10) A tapered surface is formed at a hole edge of the insertion hole in the frame. If it does in this way, when passing a connection member through an insertion hole, it will become difficult to produce the situation where a connection member is damaged by the hole edge of an insertion hole.

(11) The display panel is a liquid crystal panel in which liquid crystal is sealed between a pair of substrates. Such a display device can be suitably applied as a liquid crystal display device to various uses such as a display of a tablet personal computer or a portable information terminal.

(The invention's effect)
According to the present invention, the connecting member can be easily routed.

1 is an exploded perspective view showing a schematic configuration of a liquid crystal display device according to Embodiment 1 of the present invention. Plan view of liquid crystal display device Sectional view along line iii-iii in FIG. Sectional view taken along line iv-iv in FIG. 3 is an enlarged cross-sectional view of the left end portion of FIG. 3 is an enlarged cross-sectional view of the right end of FIG. Enlarged sectional view of the left end of FIG. Enlarged cross-sectional view along line viii-viii in FIG. Perspective view of the frame Top view of the frame Rear view of frame Sectional drawing of the penetration hole, heat radiating member, flexible substrate, and board | substrate attachment part which concern on Embodiment 2 of this invention. Sectional drawing of the flame | frame, insertion hole, and flexible substrate which concern on Embodiment 3 of this invention Sectional view of the frame showing the state before the burr generated at the hole edge on the back side of the insertion hole is surface pressed with a pressing tool Sectional drawing of the frame which shows the state by which the taper surface was formed in the hole edge of the back side of an insertion hole by surface pressing Sectional drawing of the insertion hole which concerns on Embodiment 4 of this invention, and a flexible substrate Sectional drawing of the penetration hole which concerns on Embodiment 5 of this invention, a board | substrate attachment part, an attachment board part, and a thermal radiation member Sectional drawing of the penetration hole which concerns on Embodiment 6 of this invention, a board | substrate attachment part, and a thermal radiation member Sectional drawing of the penetration hole which concerns on Embodiment 7 of this invention, a board | substrate attachment part, and an attachment board part

<Embodiment 1>
A first embodiment of the present invention will be described with reference to FIGS. In the present embodiment, a liquid crystal display device 10 including a touch panel (plate member, functional plate member) 14 and a cover panel (plate member, protective plate material, cover glass) 15 is illustrated. In addition, a part of each drawing shows an X axis, a Y axis, and a Z axis, and each axis direction is drawn to be a direction shown in each drawing. In addition, regarding the vertical direction, FIGS. 3 to 8 are used as a reference, and the upper side of the figure is the front side and the lower side of the figure is the back side.

As shown in FIG. 1, the liquid crystal display device 10 has a horizontally long rectangular shape as a whole, and is formed by assembling components such as a touch panel 14, a cover panel 15 and a casing 16 to a liquid crystal display unit LDU which is a basic component. It is said. The liquid crystal display unit LDU includes a liquid crystal panel (display panel) 11 having a display surface DS that displays an image on the front side, and a backlight device (illumination) that is disposed on the back side of the liquid crystal panel 11 and emits light toward the liquid crystal panel 11. Device) 12 and a frame (housing member) 13 that holds the liquid crystal panel 11 from the front side, that is, the side opposite to the backlight device 12 side (display surface DS side). Both the touch panel 14 and the cover panel 15 are accommodated from the front side in the frame 13 constituting the liquid crystal display unit LDU, and the outer peripheral portion (including the outer peripheral end portion) is received from the back side by the frame 13. The touch panel 14 is disposed at a position at a predetermined interval on the front side with respect to the liquid crystal panel 11, and the back (inner side) plate surface is a facing surface that faces the display surface DS. The cover panel 15 is arranged so as to overlap the touch panel 14 on the front side, and the back (inner side) plate surface is a facing surface that is opposed to the front plate surface of the touch panel 14. An antireflection film AR is interposed between the touch panel 14 and the cover panel 15 (see FIGS. 5 to 8). The casing 16 is assembled to the frame 13 so as to cover the liquid crystal display unit LDU from the back side. Among the components of the liquid crystal display device 10, a part of the frame 13 (annular portion 13 b described later), the cover panel 15, and the casing 16 constitute the appearance of the liquid crystal display device 10. The liquid crystal display device 10 according to the present embodiment is mainly used in an electronic device such as a tablet laptop computer, and the screen size is, for example, about 20 inches.

First, the liquid crystal panel 11 constituting the liquid crystal display unit LDU will be described in detail. As shown in FIG. 3 and FIG. 4, the liquid crystal panel 11 has a horizontally long rectangular shape and is substantially transparent and has a light-transmitting pair of

substrates

11a and 11b, and between the

substrates

11a and 11b. And a liquid crystal layer (not shown) including liquid crystal molecules that are substances whose optical characteristics change with application of an electric field, and the

substrates

11a and 11b maintain a gap corresponding to the thickness of the liquid crystal layer. It is bonded together with a sealing agent (not shown). The liquid crystal panel 11 has a display area (a central part surrounded by a plate-side light shielding layer 41 described later) and a non-display area (a board described later) that forms a frame surrounding the display area and does not display an image. And an outer peripheral portion overlapping with the surface light shielding layer 41. The long side direction in the liquid crystal panel 11 coincides with the X-axis direction, the short side direction coincides with the Y-axis direction, and the thickness direction coincides with the Z-axis direction.

Among the

substrates

11a and 11b, the front side (front side) is the CF substrate 11a, and the back side (back side) is the array substrate 11b. On the inner surface side (the liquid crystal layer side, the surface facing the CF substrate 11a) of the array substrate 11b, a number of TFTs (Thin Film Transistors) and pixel electrodes, which are switching elements, are provided side by side. A gate wiring and a source wiring having a lattice shape are arranged around the gate. A predetermined image signal is supplied to each wiring from a control circuit (not shown). The pixel electrode is made of a transparent electrode such as ITO (Indium Tin Oxide) or ZnO (Zinc Oxide).

On the other hand, on the CF substrate 11a, a large number of color filters are arranged side by side at positions corresponding to the respective pixels. The color filter is arranged so that three colors of R, G, and B are alternately arranged. A light shielding layer (black matrix) for preventing color mixture is formed between the color filters. On the surface of the color filter and the light shielding layer, a counter electrode facing the pixel electrode on the array substrate 11b side is provided. The CF substrate 11a is slightly smaller than the array substrate 11b. An alignment film for aligning liquid crystal molecules contained in the liquid crystal layer is formed on the inner surfaces of both the

substrates

11a and 11b. Note that

polarizing plates

11c and 11d are attached to the outer surfaces of both the

substrates

11a and 11b, respectively (see FIGS. 5 to 8).

Subsequently, the backlight device 12 constituting the liquid crystal display unit LDU will be described in detail. As shown in FIG. 1, the backlight device 12 has a horizontally long and substantially block shape as in the liquid crystal panel 11 as a whole. As shown in FIGS. 3 and 4, the backlight device 12 includes an LED (LightＬＥＤEmitting Diode) 17 that is a light source, an LED substrate (light source substrate) 18 on which the LED 17 is mounted, and light from the LED 17. A light guide plate 19 that guides light, an optical sheet (optical member) 20 that is laminated on the light guide plate 19, a light shielding frame 21 that holds the light guide plate 19 from the front side, an LED substrate 18, a light guide plate 19, an optical sheet 20, and A chassis 22 that houses the light shielding frame 21 and a heat dissipation member 23 that is attached in contact with the outer surface of the chassis 22 are provided. The backlight device 12 is of a so-called edge light type (side light type) in which LEDs 17 (LED substrates 18) are unevenly distributed at one end portion on the long side of the outer peripheral portion.

3 and 5, the LED 17 has a configuration in which an LED chip is sealed with a resin material on a substrate portion fixed to the LED substrate 18. The LED chip mounted on the substrate unit has one main emission wavelength, and specifically, one that emits blue light in a single color is used. On the other hand, the resin material that seals the LED chip is dispersed and blended with a phosphor that emits a predetermined color when excited by the blue light emitted from the LED chip, and generally emits white light as a whole. It is said. In addition, as the phosphor, for example, a yellow phosphor that emits yellow light, a green phosphor that emits green light, and a red phosphor that emits red light are used in appropriate combination, or any one of them is used. It can be used alone. The LED 17 is a so-called top surface light emitting type in which a surface opposite to the mounting surface with respect to the LED substrate 18 is a light emitting surface 17a.

As shown in FIGS. 3 and 5, the LED substrate 18 has a long plate shape extending along the X-axis direction (the long side direction of the light guide plate 19 and the chassis 22). The chassis 22 is accommodated in a posture parallel to the X-axis direction and the Z-axis direction, that is, a posture orthogonal to the plate surfaces of the liquid crystal panel 11 and the light guide plate 19. That is, the LED substrate 18 has a posture in which the long side direction on the plate surface coincides with the X-axis direction, the short side direction coincides with the Z-axis direction, and the plate thickness direction orthogonal to the plate surface coincides with the Y-axis direction. It is said. The LED substrate 18 is opposed to the inner surface of the light guide plate 19 (mounting surface 18a) with a predetermined interval in the Y-axis direction with respect to the end surface (light incident surface 19b) on one long side of the light guide plate 19. It is arranged in. Therefore, the alignment direction of the LED 17 and the LED substrate 18 and the light guide plate 19 substantially coincides with the Y-axis direction. The LED board 18 has a length dimension substantially the same as the long side dimension of the light guide plate 19 and is attached to one end portion of the long side of the chassis 22 described later.

On the inner side of the LED substrate 18, that is, the plate surface facing the light guide plate 19 (the surface facing the light guide plate 19), as shown in FIG. The mounting surface 18a is used. A plurality of LEDs 17 are arranged in a line (linearly) in parallel on the mounting surface 18a of the LED substrate 18 along the length direction (X-axis direction) with a predetermined interval. That is, it can be said that a plurality of LEDs 17 are intermittently arranged in parallel along the long side direction at one end portion on the long side of the backlight device 12. A wiring pattern (not shown) made of a metal film (such as copper foil) is provided on the mounting surface 18a of the LED substrate 18 and extends in the X-axis direction and connects adjacent LEDs 17 in series across the LED 17 group. And the terminal portions formed at both ends of the wiring pattern are connected to an external LED driving circuit, so that driving power can be supplied to each LED 17. Further, the base material of the LED substrate 18 is made of metal like the chassis 22, and the wiring pattern (not shown) described above is formed on the surface thereof via an insulating layer. In addition, as a material used for the base material of LED board 18, insulating materials, such as a ceramic, can also be used.

As shown in FIGS. 3 and 4, the light guide plate 19 is made of a synthetic resin material (for example, acrylic) having a refractive index sufficiently higher than that of air and substantially transparent (excellent translucency). The light guide plate 19 is in the form of a flat plate that is horizontally long when viewed in a plane, like the liquid crystal panel 11, and the plate surface is parallel to the plate surface (display surface DS) of the liquid crystal panel 11. The light guide plate 19 has a long side direction on the plate surface corresponding to the X-axis direction, a short side direction corresponding to the Y-axis direction, and a plate thickness direction orthogonal to the plate surface corresponding to the Z-axis direction. The light guide plate 19 is disposed immediately below the liquid crystal panel 11 and the optical sheet 20 in the chassis 22, and one of the outer peripheral end surfaces of the light guide plate 19 is disposed at one end of the chassis 22 on the long side. Each LED 17 on the LED board 18 is opposed to each other. Therefore, while the alignment direction of the LED 17 (LED substrate 18) and the light guide plate 19 coincides with the Y-axis direction, the alignment direction (overlapping direction) of the optical sheet 20 (liquid crystal panel 11) and the light guide plate 19 is Z. It is coincident with the axial direction, and both alignment directions are orthogonal to each other. The light guide plate 19 introduces light emitted from the LED 17 along the Y-axis direction from the end surface on the long side, and propagates the light inside to the optical sheet 20 side (front side, light emission side). It has the function of rising up and emitting from the plate surface.

Among the plate surfaces of the light guide plate 19 having a flat plate shape, the surface facing the front side (the surface facing the liquid crystal panel 11 and the optical sheet 20) transmits the internal light to the optical sheet 20 as shown in FIGS. In addition, a light emission surface 19a that emits light toward the liquid crystal panel 11 is formed. Of the outer peripheral end faces adjacent to the plate surface of the light guide plate 19, of the pair of long side end faces that form a longitudinal shape along the X-axis direction (LED 17 alignment direction, LED board 18 long side direction) As shown in FIG. 5, one end face (left side shown in FIG. 3) is opposed to the LED 17 (LED substrate 18) with a predetermined space therebetween, and light emitted from the LED 17 is incident thereon. It is a light incident surface 19b. The light incident surface 19b is a surface that is parallel to the X-axis direction and the Z-axis direction, and is a surface that is substantially orthogonal to the light emitting surface 19a. Further, the alignment direction of the LED 17 and the light incident surface 19b (light guide plate 19) coincides with the Y-axis direction and is parallel to the light emitting surface 19a. Of the outer peripheral end surface of the light guide plate 19, the long side end surface and the pair of short side end surfaces opposite to the light incident surface 19b are opposed to the LED 17, respectively, as shown in FIGS. The LED non-opposing end face is not used.

Of the plate surfaces of the light guide plate 19, the plate surface 19c opposite to the light exit surface 19a can reflect the light in the light guide plate 19 and rise to the front side as shown in FIGS. A possible reflection sheet R is provided so as to cover the entire area. In other words, the reflection sheet R is disposed between the bottom plate 22 a of the chassis 22 and the light guide plate 19. In the reflection sheet R, the end of the light guide plate 19 on the light incident surface 19b side is extended to the outside of the light incident surface 19b, that is, toward the LED 17, as shown in FIG. By reflecting the light from the LED 17 by the exit portion, the light incident efficiency on the light incident surface 19b can be improved. Note that a scattering portion (not shown) that scatters the light in the light guide plate 19 is provided on at least one of the light exit surface 19a and the opposite plate surface 19c of the light guide plate 19 or on the surface of the reflection sheet R. Are patterned so as to have a predetermined in-plane distribution, whereby the light emitted from the light exit surface 19a is controlled to have a uniform distribution in the plane.

As shown in FIGS. 3 and 4, the optical sheet 20 has a horizontally long rectangular shape when viewed in a plane, like the liquid crystal panel 11 and the chassis 22. The optical sheet 20 is placed on the light output surface 19 a of the light guide plate 19 and is disposed between the liquid crystal panel 11 and the light guide plate 19 so as to transmit the light emitted from the light guide plate 19. The transmitted light is emitted toward the liquid crystal panel 11 while giving a predetermined optical action. The optical sheet 20 is composed of a plurality of (three in the present embodiment) sheet-like members stacked on each other. Specific types of the optical sheet 20 include, for example, a diffusion sheet, a lens sheet, a reflective polarizing sheet, and the like, which can be appropriately selected and used.

3 and 4, the light shielding frame 21 is formed in a substantially frame shape (frame shape) extending so as to follow the outer peripheral portion (outer peripheral end portion) of the light guide plate 19. The outer peripheral portion can be pressed from the front side over almost the entire circumference. The light-shielding frame 21 is made of synthetic resin and has a light-shielding property because the surface has a form of black, for example. As shown in FIGS. 5 to 7, the light shielding frame 21 has an inner end portion 21 a between the outer peripheral portion of the light guide plate 19 and the LED 17 and the outer peripheral portions (outer peripheral end portions) of the liquid crystal panel 11 and the optical sheet 20. And are arranged so as to be optically independent. Thereby, the light emitted from the LED 17 and not entering the light incident surface 19b or the light leaking from the end surfaces of the light guide plate 19 (the three LED non-opposing end surfaces not facing the light incident surface 19b and the LED 17) 11 and the optical sheet 20 can be blocked from directly entering the outer peripheral portions (particularly the end faces). In addition, in the light shielding frame 21, three side portions (a pair of short side portions and a long side portion opposite to the LED substrate 18 side) that do not overlap with the LED 17 and the LED substrate 18 in a plan view are chassis. 22 has a portion that rises from the bottom plate 22a and a portion that supports the frame 13 from the back side, but the long side portion that overlaps the LED 17 and the LED substrate 18 in a plan view is the end of the light guide plate 19. And the LED substrate 18 (LED 17) are covered from the front side and are bridged between a pair of short sides. The light shielding frame 21 is fixed to a chassis 22 described below by fixing means such as a screw member (not shown). Note that the right end portion shown in FIG. 4 is symmetrical with the left end portion shown in FIG. 4 where the enlarged view is shown in FIG.

The chassis 22 is made of a metal plate having excellent thermal conductivity, such as an aluminum plate or an electrogalvanized steel plate (SECC), and has a horizontally long rectangular shape as in the liquid crystal panel 11 as shown in FIGS. A bottom plate 22a formed, and a side plate 22b rising from the outer ends of the respective sides (a pair of long sides and a pair of short sides) of the bottom plate 22a toward the front side. The chassis 22 (bottom plate 22a) has a long side direction that matches the X-axis direction, and a short side direction that matches the Y-axis direction. Most of the bottom plate 22a is a light guide plate support portion 22a1 that supports the light guide plate 19 from the back side (the side opposite to the light emitting surface 19a side), whereas the end on the LED substrate 18 side is stepped. The substrate accommodating portion 22a2 bulges to the back side. As shown in FIG. 5, the substrate housing portion 22a2 has a substantially L-shaped cross-section, is bent from the end portion of the light guide plate support portion 22a1, and rises toward the back side, and a rising portion. 38 is composed of an accommodation bottom 39 that is bent from the rising tip of 38 and protrudes toward the side opposite to the light guide plate support 22a1 side. The bent position of the rising portion 38 from the end of the light guide plate support portion 22a1 is located on the opposite side of the light incident surface 19b of the light guide plate 19 from the LED 17 side (near the center of the light guide plate support portion 22a1). . A long side plate 22b is bent from the protruding tip of the housing bottom 39 so as to rise to the front side. The LED substrate 18 is attached to the side plate 22b on the long side continuous to the substrate housing portion 22a2, and the side plate 22b constitutes the substrate attachment portion 37. The board mounting portion 37 has a facing surface that faces the light incident surface 19b of the light guide plate 19, and the LED substrate 18 is mounted on the facing surface. The LED substrate 18 is fixed in such a manner that the plate surface opposite to the mounting surface 18a on which the LED 17 is mounted is in contact with the inner plate surface of the substrate mounting portion 37 via a substrate fixing member 25 such as a double-sided tape. ing. The attached LED board 18 has a slight gap between the LED board 18 and the inner plate surface of the housing bottom 39 that forms the board housing 22a2.

As shown in FIGS. 1 and 8, on the back surface of the bottom plate 22a of the chassis 22 (on the opposite side to the light guide plate 19 side, outside), driving for realizing a touch panel function of the touch panel 14 to be described later is controlled. A touch panel drive circuit board (control member) 26 is attached. The touch panel drive circuit board 26 has a touch panel drive circuit (not shown) that supplies a predetermined potential to the touch panel 14 and is electrically connected to an end of a flexible board 27 for electrically connecting the touch panel drive circuit to the touch panel 14. It has a connector part 26a to be contacted. The flexible substrate (connecting member) 27 is formed by forming a conductive path (wiring pattern) on a film-like base material made of a synthetic resin material having insulation and flexibility. As shown in FIG. 8, one end of the flexible substrate 27 is electrically connected to one end of the long side of the touch panel 14 by crimping via an anisotropic conductive film (not shown). On the other hand, the other end side is inserted into the connector portion 26a of the touch panel drive circuit board 26 and is electrically connected while being bent in the middle. In addition to the touch panel drive circuit board 26, the rear panel surface of the bottom plate 22 a of the chassis 22 supplies drive power to a liquid crystal panel drive circuit board (not shown) and the LED 17 for controlling the drive of the liquid crystal panel 11. An LED driving circuit board (not shown) to be supplied is attached. The liquid crystal panel drive circuit board is connected to the end of the long side opposite to the LED board 18 side of the liquid crystal panel 11 and bent in a folded manner in the same manner as the flexible board 27 described above. A driver member (liquid crystal driving member) (not shown) is electrically connected.

The heat dissipating member 23 is made of a metal plate having excellent thermal conductivity such as an aluminum plate, and as shown in FIGS. 1 and 3, one end of the long side of the chassis 22, specifically, a substrate housing for housing the LED substrate 18. It is set as the form extended along the part 22a2. As shown in FIG. 5, the heat radiating member 23 has a substantially L-shaped cross section, and is parallel to the outer surface of the substrate housing portion 22a2 and in contact with the outer surface, and the substrate housing portion 22a2. It consists of the 2nd thermal radiation part 23b parallel to the outer surface of the board | substrate attachment part 37 (side plate 22b) which continues. The first heat radiating portion 23a has an elongated flat plate shape extending along the X-axis direction, and the plate surface facing the front side parallel to the X-axis direction and the Y-axis direction has a receiving bottom portion 39 in the substrate receiving portion 22a2. It is contact | abutted over the full length of the outer surface of. The first heat radiating portion 23a is screwed to the housing bottom 39 by a screw member SM, and has a screw insertion hole 23a1 through which the screw member SM is inserted. The accommodation bottom 39 is formed with a screw hole 28 into which the screw member SM is screwed. Thereby, the heat generated from the LED 17 is transmitted to the first heat radiating part 23a via the LED board 18, the board attaching part 37, and the board accommodating part 22a2. Note that a plurality of screw members SM are attached to the first heat radiating portion 23a so as to be intermittently arranged along the extending direction. The second heat dissipating part 23b has an elongated flat plate shape extending along the X-axis direction, and a plate surface facing inward in parallel to the X-axis direction and the Z-axis direction is an outer plate in the board mounting part 37. It is arranged in an opposing manner with a predetermined gap C1 between the surface and the surface.

Subsequently, the frame 13 constituting the liquid crystal display unit LDU will be described in detail. The frame 13 is made of a metal material having excellent thermal conductivity such as aluminum. As shown in FIG. 1, as a whole, each outer peripheral portion (outer periphery) of the liquid crystal panel 11, the touch panel 14 and the cover panel 15 is used. It has a horizontally long substantially frame shape (frame shape) extending in a manner that follows the end portion. As a method for manufacturing the frame 13, for example, press working or the like is employed. As shown in FIGS. 3 and 4, the frame 13 presses the outer peripheral portion of the liquid crystal panel 11 from the front side, and the liquid crystal panel 11 and the optical sheet stacked with each other with the chassis 22 constituting the backlight device 12. 20 and the light guide plate 19 are held in a sandwiched manner. On the other hand, the frame 13 receives the outer peripheral portions of the touch panel 14 and the cover panel 15, both of which are plate-like members, from the back side, and is arranged so as to be interposed between the outer peripheral portions of the liquid crystal panel 11 and the touch panel 14. Yes. As a result, a predetermined gap C2 is secured between the liquid crystal panel 11 and the touch panel 14, so that when the external force is applied to the cover panel 15, for example, the touch panel 14 follows the cover panel 15 and the liquid crystal panel 11 side. Even when it is deformed so as to be bent, it is difficult for the touch panel 14 to be bent to interfere with the liquid crystal panel 11.

As shown in FIGS. 9 to 11, the frame 13 includes a frame-like portion (frame base portion, frame-like portion) 13 a that follows each outer peripheral portion of the liquid crystal panel 11, the touch panel 14, and the cover panel 15, and the outer periphery of the frame-like portion 13 a. Attached to the chassis 22 and the heat radiating member 23 projecting from the frame-shaped part 13a toward the back side, and an annular part (cylindrical part) 13b that continues to the end and surrounds the touch panel 14, the cover panel 15 and the casing 16 from the outer peripheral side. And an attachment plate portion 13c.

As shown in FIGS. 9 to 11, the frame-shaped portion 13 a has a substantially plate shape having plate surfaces parallel to the plate surfaces of the liquid crystal panel 11, the touch panel 14, and the cover panel 15, and is horizontally long when viewed in a plane. It is formed in a substantially square frame shape. As shown in FIGS. 5 to 7, the frame portion 13a is relatively thicker at the outer peripheral portion 13a2 than at the inner peripheral portion 13a1, and there is a step (gap) GP at the boundary position between the two. Is formed. Of the frame-shaped portion 13a, the inner peripheral portion 13a1 is interposed between the outer peripheral portion of the liquid crystal panel 11 and the outer peripheral portion of the touch panel 14, whereas the outer peripheral portion 13a2 receives the outer peripheral portion of the cover panel 15 from the back side. . Thus, since the front plate surface of the frame-like portion 13a is almost entirely covered by the cover panel 15, the front plate surface is hardly exposed to the outside. Thereby, even if the temperature of the frame 13 is increased due to heat from the LED 17 or the like, it is difficult for the user of the liquid crystal display device 10 to directly contact the exposed portion of the frame 13, which is excellent in terms of safety. On the back surface of the inner peripheral portion 13a1 of the frame-shaped portion 13a, a cushioning material 29 for adhering the outer peripheral portion of the liquid crystal panel 11 and holding it from the front side is fixed, whereas the front side of the inner peripheral portion 13a1 is fixed. A first fixing member 30 for fixing the outer peripheral portion of the touch panel 14 while buffering is fixed to the plate surface. The cushioning material 29 and the first fixing member 30 are disposed at positions overlapping each other in a plan view in the inner peripheral portion 13a1. On the other hand, a second fixing member 31 for fixing the outer peripheral portion of the cover panel 15 while buffering the outer peripheral portion of the cover panel 15 is fixed to the front plate surface of the outer peripheral portion 13a2 of the frame-like portion 13a. The buffer material 29 and the fixing

members

30 and 31 are arranged so as to extend along the side portions of the frame-like portion 13a excluding the corner portions at the four corners. Moreover, each fixing

member

30 and 31 consists of a double-sided tape in which a base material has cushioning properties, for example.

As shown in FIGS. 8 to 11, the touch panel 14 and the touch panel drive circuit board 26 are electrically connected to the long side portion of the frame-like portion 13 a that overlaps the LED substrate 18 in a plan view. An opening 32 is formed so as to penetrate through the flexible substrate 27. The insertion hole 32 is arranged in a range straddling the inner peripheral portion 13a1 and the outer peripheral portion 13a2 in the Y-axis direction among the long side portions of the frame-shaped portion 13a, and is located on the inner side (chassis) of the mounting plate portion 13c described later. 22 side). The insertion hole 32 includes a first fixing member 30 that fixes the outer peripheral portion of the touch panel 14 to the inner peripheral portion 13a1 of the frame-shaped portion 13a in the Y-axis direction, and the outer peripheral portion of the cover panel 15 to the outer peripheral portion 13a2 of the frame-shaped portion 13a. It is arranged between the second fixing member 31 to be fixed. The insertion hole 32 is arranged at a position communicating with a gap C 1 provided between the second heat radiating portion 23 b of the heat radiating member 23 and the outer plate surface of the board mounting portion 37 (side plate 22 b) in the chassis 22. , Between the mounting plate portion 13c and the substrate mounting portion 37. Furthermore, a communication notch 33 communicating with the insertion hole 32 and the gap C 1 is formed in the heat radiating member 23 at a portion overlapping the insertion hole 32 in plan view. The communication notch 33 is a portion of the heat dissipation member 23 that is disposed outside the board mounting portion 37 of the chassis 22, specifically, an end on the second heat dissipation portion 23 b side in the first heat dissipation portion 23 a in the Y-axis direction. It is formed in a range extending from the portion (near the bent portion) to the entire area of the second heat radiating portion 23b. Thereby, the other end side of the flexible substrate 27 whose one end side is connected to the end portion of the touch panel 14 is passed through the insertion hole 32, the gap C 1, and the communication notch portion 33, thereby driving the touch panel disposed on the back side of the chassis 22. It is possible to easily connect to the circuit board 26. Further, the insertion hole 32 is arranged at a position offset toward one end (the right side shown in FIG. 10 and the left side shown in FIG. 11) in the X-axis direction of the long side part of the frame-like part 13 a. The opening width is made slightly larger than the width dimension of the flexible substrate 27.

As shown in FIGS. 5 to 9, the annular portion 13 b has a horizontally long rectangular short tube shape as viewed in plan as a whole, from the outer peripheral edge of the outer peripheral portion 13 a 2 of the frame-shaped portion 13 a toward the front side. It has the 1st annular part 34 which protrudes, and the 2nd annular part 35 which protrudes toward the back side from the outer periphery of the outer peripheral part 13a2 of the frame-shaped part 13a. In other words, in the annular portion 13b having a short cylindrical shape, the outer peripheral edge of the frame-shaped portion 13a is connected to the inner peripheral surface at the substantially central portion in the axial direction (Z-axis direction) over the entire periphery. The first annular portion 34 is arranged so as to surround the outer peripheral end surfaces of the touch panel 14 and the cover panel 15 arranged on the front side with respect to the frame-shaped portion 13a over the entire circumference. The first annular portion 34 has an inner peripheral surface facing the outer peripheral end surfaces of the touch panel 14 and the cover panel 15, whereas the outer peripheral surface is exposed to the outside of the liquid crystal display device 10, and the liquid crystal display The external appearance of the side surface side of the device 10 is configured. In the first annular portion 34, the protruding tip position from the frame-like portion 13 a is recessed behind the outer (front side) plate surface of the cover panel 15, in other words, relative to the outer plate surface of the cover panel 15. The low-order part 40 which is especially low is comprised. For this reason, the outer plate surface of the cover panel 15 protrudes to the front side relative to the protruding tip portion of the first annular portion 34 and is relatively high. The projecting tip position of the first annular portion 34 is maintained at substantially the same height over the entire circumference, and the first annular portion 34 is a low-order portion 40 over the entire circumference. Accordingly, even when liquid is spilled on the outer plate surface of the cover panel 15 when the liquid crystal display device 10 is used with the plate surface of the cover panel 15 parallel to the horizontal direction, the liquid is spilled. The liquid is quickly discharged from the lower portion 40 (first annular portion 34) to the outside, and is prevented from staying on the outer plate surface of the cover panel 15. It is difficult for a situation to penetrate into the liquid crystal display device 10. Furthermore, a taper surface 34a that forms a downward gradient outward is formed on the projecting tip surface of the first annular portion 34, whereby the liquid can be discharged more smoothly.

On the other hand, as shown in FIGS. 5 to 9, the second annular portion 35 surrounds the front end portion (attachment portion 16 c) of the casing 16 disposed on the back side with respect to the frame-shaped portion 13 a from the outer peripheral side. . The second annular portion 35 has an inner peripheral surface facing a mounting portion 16c of the casing 16 described later, whereas an outer peripheral surface is exposed to the outside of the liquid crystal display device 10 and the liquid crystal display device 10. The external appearance of the side surface is configured. A frame-side hooking claw portion 35a having a cross-sectional saddle shape is formed at the projecting tip portion of the second annular portion 35, and the casing 16 is locked to the frame-side locking claw portion 35a. The casing 16 can be held in the attached state.

As shown in FIGS. 5 to 9, the mounting plate portion 13 c protrudes from the outer peripheral portion 13 a 2 toward the back side of the frame-shaped portion 13 a and extends along each side of the frame-shaped portion 13 a. The plate surface is substantially orthogonal to the plate surface of the frame-like portion 13a. The mounting plate portion 13c is individually arranged for each side portion of the frame-like portion 13a. As shown in FIGS. 5 and 8, the mounting plate portion 13 c disposed on the long side portion on the LED substrate 18 side of the frame-shaped portion 13 a has a plate surface facing the inner side as the second heat radiating portion of the heat radiating member 23. It is attached so that the outer plate surface in 23b is in contact. The mounting plate portion 13c is screwed to the second heat radiating portion 23b by a screw member SM, and has a screw insertion hole 13c1 through which the screw member SM is inserted. Further, a screw hole 36 into which the screw member SM is screwed is formed in the second heat radiating portion 23b. Thereby, the heat from the LED 17 transmitted from the first heat radiating portion 23a to the second heat radiating portion 23b is transmitted to the entire plate 13 after being transmitted to the mounting plate portion 13c. Heat is dissipated. Further, the mounting plate portion 13 c is indirectly fixed to the chassis 22 through the heat radiating member 23. On the other hand, the attachment plate portions 13c arranged on the long side portion and the pair of short side portions on the opposite side to the LED substrate 18 side in the frame-like portion 13a face the inside as shown in FIG. The plate surfaces are respectively screwed by the screw members SM so as to be in contact with the outer plate surfaces of the side plates 22b of the chassis 22. The mounting plate portions 13c are formed with screw insertion holes 13c1 through which the screw members SM are inserted, whereas the side plates 22b are formed with screw holes 36 into which the screw members SM are screwed. . In addition, each screw member SM is attached to each attachment plate portion 13c in a form in which a plurality of screw members SM are intermittently arranged along the respective extending directions.

Next, the touch panel 14 assembled to the frame 13 will be described in detail. As shown in FIGS. 1, 3 and 4, the touch panel 14 is a position input device for a user to input position information in the plane of the display surface DS of the liquid crystal panel 11, and has a horizontally long rectangular shape. At the same time, a predetermined touch panel pattern (not shown) is formed on a glass substrate that is substantially transparent and has excellent translucency. Specifically, the touch panel 14 has a glass substrate that has a horizontally long rectangular shape when seen in a plan view like the liquid crystal panel 11, and a so-called projected capacitive touch panel on the surface facing the front side. A touch panel transparent electrode portion (not shown) constituting the pattern is formed, and a large number of touch panel transparent electrode portions are arranged in parallel in a matrix in the plane of the substrate. A terminal portion (not shown) to which one end side of the flexible substrate 27 is crimped and connected is formed at one end portion on the long side of the touch panel 14, and this terminal portion is formed from the touch panel transparent electrode portion that constitutes the touch panel pattern. It is connected to the end of the drawn wiring. With this terminal portion, it is possible to supply the potential supplied from the touch panel drive circuit substrate 26 via the flexible substrate 27 to the transparent electrode portion for the touch panel constituting the touch panel pattern. The touch panel 14 is fixed in a state where the inner plate surface in the outer peripheral portion thereof is opposed to the inner peripheral portion 13a1 in the frame-like portion 13a of the frame 13 by the first fixing member 30 described above.

Subsequently, the cover panel 15 assembled to the frame 13 will be described in detail. As shown in FIGS. 1 to 4, the cover panel 15 is disposed so as to cover the touch panel 14 from the front side over the entire region thereof, thereby protecting the touch panel 14 and the liquid crystal panel 11. The cover panel 15 covers the entire frame-like portion 13a of the frame 13 from the front side to the entire area, and configures the front side appearance of the liquid crystal display device 10. The cover panel 15 is made of a plate-like base material made of glass having a horizontally long rectangular shape and substantially transparent and having excellent translucency, and preferably made of tempered glass. As the tempered glass used for the cover panel 15, it is preferable to use chemically tempered glass having a chemically strengthened layer on the surface, for example, by subjecting the surface of a plate-like glass substrate to chemical tempering treatment. This chemical strengthening treatment refers to, for example, a treatment for strengthening the plate-shaped glass substrate by replacing alkali metal ions contained in the glass material by ion exchange with alkali metal ions having a larger ion radius than that, The resulting chemically strengthened layer is a compressive stress layer (ion exchange layer) in which compressive stress remains. Thereby, since the cover panel 15 has high mechanical strength and impact resistance, the touch panel 14 and the liquid crystal panel 11 disposed on the back side of the cover panel 15 are more reliably prevented from being damaged or damaged. be able to.

As shown in FIGS. 3 and 4, the cover panel 15 has a horizontally long rectangular shape when viewed in a plane, like the liquid crystal panel 11 and the touch panel 14, and the size of the cover panel 15 viewed in the plane is the liquid crystal panel 11 and the touch panel. It is supposed to be one size larger than 14. Therefore, as shown in FIGS. 5 and 7, the cover panel 15 has an overhanging portion 15EP that projects outwardly in a bowl shape from the outer peripheral edges of the liquid crystal panel 11 and the touch panel 14 over the entire periphery. This overhanging portion 15EP has a horizontally long and substantially rectangular frame shape (substantially frame shape) that surrounds the liquid crystal panel 11 and the touch panel 14, and the inner plate surface thereof is framed by the second fixing member 31 described above. The frame-shaped portion 13a is fixed to the outer peripheral portion 13a2 so as to face the outer peripheral portion 13a2. On the other hand, a central portion of the cover panel 15 that faces the touch panel 14 is laminated on the front side with respect to the touch panel 14 via an antireflection film AR. In addition, as described above, the outer (front side) plate surface of the cover panel 15 protrudes to the front side relative to the protruding tip of the first annular portion 34 of the frame 13 and is relatively high.

As shown in FIGS. 2, 5, and 7, on the inner (back side) plate surface (the plate surface facing the touch panel 14 side) of the outer peripheral portion including the above-described overhang portion 15 EP of the cover panel 15, A plate surface light shielding layer (light shielding layer, plate surface light shielding portion) 41 is formed. The plate surface light shielding layer 41 is made of, for example, a light shielding material such as a black paint, and the light shielding material is integrally provided on the plate surface by printing on the inner plate surface of the cover panel 15. It has been. In providing the plate surface light shielding layer 41, for example, printing means such as screen printing and ink jet printing can be employed. The plate surface light-shielding layer 41 is inside the overhanging portion 15EP in addition to the entire area of the overhanging portion 15EP of the cover panel 15, and overlaps each of the outer peripheral portions of the touch panel 14 and the liquid crystal panel 11 in a plan view. It is formed in a range over the part to be. Therefore, since the plate surface light shielding layer 41 is disposed so as to surround the display area of the liquid crystal panel 11, it is possible to block light outside the display area, and thus display quality related to an image displayed in the display area. Can be high. In FIG. 2, the formation range of the plate surface light-shielding layer 41 is shown in a shaded shape.

Subsequently, the casing 16 assembled to the frame 13 will be described in detail. The casing 16 is made of a synthetic resin material or a metal material, and as shown in FIGS. 1, 3, and 4, has a substantially bowl shape that is open toward the front side. 13 covers the members such as the frame portion 13a, the mounting plate portion 13c, the chassis 22, the heat radiating member 23, and the touch panel drive circuit board 26 from the back side, and configures the appearance of the back side of the liquid crystal display device 10. The casing 16 has a generally flat bottom portion 16a, a curved portion 16b that rises from the outer peripheral edge of the bottom portion 16a toward the front side and has a curved cross section, and an attachment portion that rises substantially straight from the outer peripheral edge of the curved portion 16b toward the front side. 16c. As shown in FIGS. 5 and 7, a casing-side locking claw portion 16 d having a saddle-shaped cross section is formed on the mounting portion 16 c, and the casing-side locking claw portion 16 d is locked to the frame 13 on the frame side. The casing 16 can be held in an attached state with respect to the frame 13 by being locked to the claw portion 35a.

By the way, in the liquid crystal display device 10 according to the present embodiment, as shown in FIG. 5, a frame-like frame 13 is interposed between the outer peripheral portion of the touch panel 14 and the outer peripheral portion of the liquid crystal panel 11. As a result, a gap C2 is secured between the touch panel 14 and the liquid crystal panel 11, so that, for example, an external force acts on the cover panel 15 and the touch panel 14 is deformed so as to bend toward the liquid crystal panel 11 together with the cover panel 15. Even in this case, the bent touch panel 14 is less likely to interfere with the liquid crystal panel 11. This makes it difficult for a display defect to occur in the image displayed on the liquid crystal panel 11, and the display quality is excellent. Further, compared to the case where the touch panel 14 is directly attached to the liquid crystal panel 11 without using the frame 13, the distance between the facing surfaces of the touch panel 14 and the liquid crystal panel 11 is easily uniform in the plane. And cost is excellent. In addition, a flexible substrate 27 that electrically connects the end of the touch panel 14 and the touch panel drive circuit substrate 26 disposed on the opposite side of the touch panel 14 to the liquid crystal panel 11 is inserted into the frame 13. Since the insertion hole 32 is formed, the flexible substrate 27 is easily routed even though the outer peripheral portion of the touch panel 14 and the overhanging portion 15EP of the cover panel 15 are received from the liquid crystal panel 11 side by the frame 13. In addition, the flexible substrate 27 can be shortened and the frame portion of the liquid crystal display device 10 can be narrowed as compared with the case where the flexible substrate is wound around the outside of the frame 13.

The outer peripheral portion of the touch panel 14 and the overhang portion 15EP of the cover panel 15 are fixed to the frame-like portion 13a of the frame 13 by the first fixing member 30 and the second fixing member 31, respectively, as shown in FIG. The insertion hole 32 is disposed between the first fixing member 30 and the second fixing member 31 in the frame-like portion 13a of the frame 13 while being held in the attached state. In addition to being able to stably hold the touch panel 14 and the cover panel 15, the flexible panel is connected to the end of the touch panel 14 and is disposed in a space sandwiched between the fixing

members

30 and 31. By inserting the substrate 27 into the insertion hole 32, the flexible substrate 27 is driven by the touch panel without preventing the touch panel 14 and the cover panel 15 from being fixed. It can be connected to the road substrate 26. In addition, since the plate surface light-shielding layer 41 is formed on the plate surface of the outer peripheral portion of the cover panel 15 so as to overlap with the insertion holes 32 in addition to the outer peripheral portions of the touch panel 14 and the liquid crystal panel 11, the touch panel. 14 and the respective outer peripheral portions of the liquid crystal panel 11, the insertion hole 32 can be made difficult to be seen by the user of the liquid crystal display device 10, so that the appearance can be improved and the display quality of the display image can be improved. Can be high. Furthermore, since the annular portion 13b of the frame 13 forms the appearance of the side surface side of the liquid crystal display device 10, if the flexible substrate is turned around to the outside of the frame 13, the flexible substrate is exposed to the outside. However, in this embodiment, since the flexible substrate 27 can be routed in the internal space of the liquid crystal display device 10 by passing through the insertion hole 32, the appearance is excellent.

Here, in the liquid crystal display device 10 according to the present embodiment, as shown in FIG. 5, the liquid crystal panel 11 and the light guide plate 19 are sandwiched between the chassis 22 and the frame 13 in a state where they overlap each other. Since the panel receiving member is not interposed between the light guide plate 19 and the liquid crystal panel 11 as in the prior art, the thickness of the light guide plate 19 depends on the holding force of the chassis 22 and the frame 13. There is a risk of displacement in the direction. In addition, when the conventional panel receiving member is abolished, the overall thickness can be reduced and the light guide plate 19 itself tends to be made thinner. Therefore, there is a tendency to require alignment. In that respect, since a part of the chassis 22 according to the present embodiment is a board attaching portion 37 to which the LED board 18 is attached, the LED board 18 is temporarily attached to a heat radiating member different from the chassis 22 and the heat radiating member is attached. Compared with the case where the board is attached so as to be in contact with the inner plate surface of the board attachment portion 37, the assembly error that can occur between the LED board 18 and the board attachment portion 37 can be reduced. In addition, by directly attaching the LED substrate 18 to the surface of the substrate mounting portion 37 that faces the light incident surface 19b, the LED 17 is disposed facing the light incident surface 19b, and the direction along the light incident surface 19b. Can be easily aligned. Thereby, it is possible to reduce a positional shift that may occur between the light incident surface 19b and the LED 17 in the direction along the light incident surface 19b of the light guide plate 19, and in particular, light having the highest emission intensity among the emitted light from the LED 17. This is suitable for aligning the optical axis, which is the traveling direction, with the light guide plate 19 at the center position in the thickness direction. Accordingly, it is possible to improve the incident efficiency of light incident on the light incident surface 19b of the light guide plate 19 from the LED 17, and it is difficult for luminance unevenness to occur in the emitted light from the light output surface 19a of the light guide plate 19.

In addition, since the chassis 22 is provided with a board accommodating portion 22a2 that accommodates the LED board 18 attached to the board attaching portion 37 by bulging out from the light guide plate support portion 22a1, the LED substrate 18 is provided. It is possible to secure a sufficient storage space. Thereby, the dimension about the Z-axis direction of LED17 can be set freely, for example, since it can be set as the dimension close | similar to the board thickness dimension of the light-guide plate 19, it injects into the light-incidence surface 19b of the light-guide plate 19 from LED17. The amount of incident light can be made extremely high, which is suitable for optimizing the incident efficiency.

As described above, in the configuration in which the LED substrate 18 is directly attached to the substrate attachment portion 37 that is a part of the chassis 22, the LED substrate 18 is temporarily attached to the substrate attachment portion 37 via the heat dissipation member. This is inferior in terms of heat dissipation performance. In that respect, in this embodiment, since the heat radiating member 23 is attached so as to be in contact with the outer surface of the substrate housing portion 37, the heat from the LED 17 is applied to the LED substrate 18, the substrate mounting portion 37, and the substrate housing portion 22a2. By transmitting the light to the light guide plate support 22a1 and the heat radiating member 23, efficient heat dissipation can be achieved. In addition, since the second heat radiating portion 23b constituting the heat radiating member 23 is attached in contact with the mounting plate portion 13c provided on the frame 13, the frame 17 is used in addition to the chassis 22 and the heat radiating member 23. Heat dissipation can be achieved, and the heat dissipation performance can be further improved. In addition, the insertion hole 32 is disposed in the frame-like portion 13a of the frame 13 between the board attachment portion 37 and the attachment plate portion 13c, whereas the insertion hole 32 is provided in the heat dissipation member 23. Since the communication cutout portion 33 through which the flexible substrate 27 is passed is formed by communicating with 32, the flexible substrate 27 can be easily connected to the touch panel drive circuit substrate 26 by passing through the insertion hole 32 and the communication cutout portion 33. Can do. Further, since the insertion hole 32 faces the gap C1 between the second heat radiation part 23b of the heat radiation member 23 and the board mounting part 37, the flexible board 27 is inserted into the insertion hole 32, By passing through the gap C 1 and the communication notch 33, the touch panel drive circuit board 26 can be more easily connected.

As described above, the liquid crystal display device (display device) 10 of the present embodiment has a liquid crystal panel (display panel) 11 having a display surface DS for displaying an image and a light-transmitting property. The touch panel (functional plate member) 14 having a facing surface that is opposed to the display surface DS, and the touch panel 14 is protected and translucent. The liquid crystal panel 11 has a cover panel (protective plate material) 15 having an opposing surface disposed opposite to the side and having an opposing surface and an overhanging portion 15EP projecting outward from the outer edge of the touch panel 14. A touch panel drive circuit board (control member) that is disposed on the side opposite to the touch panel 14 side and controls driving for realizing the function of the touch panel 14 26, one end side of which is electrically connected to the end portion of the touch panel 14, while the other end side is electrically connected to the touch panel drive circuit board 26, and the cover panel 15 is stretched. It forms a frame shape that follows the protruding portion 15EP and the outer peripheral portion of the touch panel 14, receives the protruding portion 15EP of the cover panel 15 and the outer peripheral portion of the touch panel 14 on the liquid crystal panel 11 side, and the outer peripheral portion of the touch panel 14 and the liquid crystal panel 11 And a frame 13 formed with an insertion hole 32 through which the flexible substrate 27 is inserted.

In this manner, the image displayed on the display surface DS of the liquid crystal panel 11 is observed by the user of the liquid crystal display device 10 through the translucent touch panel 14 and the cover panel 15. The touch panel 14 is protected by a cover panel 15 having an overhanging portion 15EP projecting to the outside, and the driving of the touch panel 14 is controlled by a touch panel drive circuit board 26 electrically connected through a flexible board 27. . Between the outer peripheral part of the touch panel 14 and the outer peripheral part of the liquid crystal panel 11, a gap C 2 is ensured between the touch panel 14 and the liquid crystal panel 11 by arranging the frame 13 having a frame shape. Therefore, for example, even when an external force acts on the touch panel 14 through the cover panel 15 and the touch panel 14 is deformed to bend toward the liquid crystal panel 11, the bent touch panel 14 is unlikely to interfere with the liquid crystal panel 11. Become. This makes it difficult for a display defect to occur in the image displayed on the liquid crystal panel 11, and the display quality is excellent. Further, compared to the case where the touch panel 14 is directly attached to the liquid crystal panel 11 without using a frame, the distance between the facing surfaces of the touch panel 14 and the liquid crystal panel 11 is easily uniformized within the surface. It can be done and is excellent in terms of cost.

The frame 13 is inserted through a flexible substrate 27 that electrically connects the end of the touch panel 14 and the touch panel drive circuit substrate 26 disposed on the opposite side of the liquid crystal panel 11 from the touch panel 14 side. Since the hole 32 is formed, the flexible substrate 27 can be easily routed even though the outer peripheral portion of the touch panel 14 and the protruding portion 15EP of the cover panel 15 are received from the liquid crystal panel 11 side by the frame 13. In addition, the flexible substrate 27 can be shortened and the frame portion of the liquid crystal display device 10 can be narrowed as compared with the case where the flexible substrate is wound around the outside of the frame 13. As described above, according to the present embodiment, the flexible substrate 27 can be easily routed.

Further, on the plate surface of the outer peripheral portion of the cover panel 15, there is a plate surface light-shielding layer (light-shielding layer) 41 that shields light in a form that overlaps with the outer peripheral portions of the touch panel 14 and the liquid crystal panel 11 and overlaps with the insertion hole 32. Is formed. In this manner, the outer peripheral portions of the touch panel 14 and the liquid crystal panel 11 can be prevented from being visually recognized by the user of the liquid crystal display device 10 by the plate surface light shielding layer 41, and also formed on the frame 13. It is possible to prevent the inserted insertion hole 32 from being visually recognized by the user. Thereby, it is possible to improve the display quality related to the image displayed on the display surface DS of the liquid crystal panel 11 while being excellent in appearance.

Further, the outer peripheral portion of the touch panel 14 and the overhang portion 15EP of the cover panel 15 are attached to the frame 13. In this manner, the outer peripheral portion of the touch panel 14 and the overhanging portion 15EP of the cover panel 15 are attached to the frame 13, so that the respective holding is achieved. Compared with the case where holding is performed using a member pressed from the opposite side, the number of parts can be reduced and the appearance is also excellent.

Further, a first fixing member 30 for fixing the outer peripheral portion of the touch panel 14 and the frame 13 and a second fixing member 31 for fixing the protruding portion 15EP of the cover panel 15 and the frame 13 are provided, and the insertion hole 32 is arranged between the first fixing member 30 and the second fixing member 31 in the frame 13. In this way, the touch panel 14 and the cover panel 15 are fixed to the frame 13 by the first fixing member 30 and the second fixing member 31, and stable holding is achieved. The insertion hole 32 is disposed between the first fixing member 30 and the second fixing member 31 in the frame 13 so that the flexible substrate 27 can be inserted without preventing the touch panel 14 and the cover panel 15 from being fixed. Can be achieved.

Further, at least a part of the frame 13 is exposed to the outside, so that the appearance of the liquid crystal display device 10 is configured. In this case, since the frame 13 constitutes the appearance of the liquid crystal display device 10, if the flexible substrate is wrapped around the outside of the frame 13, the flexible substrate is exposed to the outside. The flexible substrate 27 can be disposed inside the liquid crystal display device 10 by the insertion hole 32, and the appearance is excellent. In addition, when the flexible board is wound around the outside of the frame 13, it may be possible to add a member that covers the flexible board.

In addition, a backlight device (illumination device) 12 that supplies light to the liquid crystal panel 11 is provided on the side opposite to the display surface DS side with respect to the liquid crystal panel 11. The LED (light source) 17 and the liquid crystal panel 11 are arranged so as to overlap with the side opposite to the display surface DS side, and the light incident surface 19b which is an end surface is opposed to the LED 17 and is a plate surface. A light guide plate 19 that emits light from the emission surface 19 a toward the liquid crystal panel 11, and a chassis 22 that holds the liquid crystal panel 11 and the light guide plate 19 between the frame 13 and accommodates the LEDs 17. Yes. In this way, when the light from the LED 17 is incident on the light incident surface 19 b that is the end surface of the light guide plate 19, it is propagated through the light guide plate 19 and then emitted toward the liquid crystal panel 11. In the liquid crystal panel 11, an image is displayed on the display surface DS using the light supplied from the backlight device 12. The liquid crystal panel 11 and the light guide plate 19 can be held between the chassis 22 and the frame 13 interposed between the touch panel 14 and the liquid crystal panel 11. Thereby, compared with the case where a frame-shaped member is interposed between the light guide plate 19 and the liquid crystal panel 11, the liquid crystal display device 10 can be made thinner and the number of parts can be reduced. Can do.

Further, the backlight device 12 includes an LED substrate (light source substrate) 18 on which the LEDs 17 are provided, and a part of the chassis 22 is opposed to the light incident surface 19 b that is an end surface of the light guide plate 19. The board mounting portion 37 has a surface and the LED board 18 is mounted on the opposite surface. In this way, the liquid crystal panel 11 and the light guide plate 19 are held in a state of being sandwiched between the chassis 22 and the frame 13 in a state of being overlapped with each other. Therefore, the light guide plate 19 may be displaced in the plate thickness direction depending on the holding force of the chassis 22 and the frame 13. In that respect, as described above, a part of the chassis 22 has a facing surface that is opposed to the light incident surface 19 b that is the end surface of the light guide plate 19, and the board mounting portion 37 to which the LED substrate 18 is attached. Therefore, compared with the case where the LED substrate 18 is attached to a member different from the chassis 22 and the member is attached to the substrate attachment portion 37, the LED substrate 18 and the substrate attachment portion 37 are disposed between them. Possible assembly errors can be reduced. In addition, the LED substrate 18 is directly attached to the surface of the substrate attachment portion 37 that faces the light incident surface 19b that is the end surface of the light guide plate 19, whereby the LED 17 is attached to the light incident surface 19b that is the end surface of the light guide plate 19. Positioning can be easily performed in the direction along the light incident surface 19b which is the same end surface while being arranged in an opposing manner. Thereby, the position shift which can arise between the light-incidence surface 19b which is the end surface about the direction along the light-incidence surface 19b which is the end surface of the light-guide plate 19, and LED17 can be reduced. Therefore, it is possible to improve the incident efficiency of light incident from the LED 17 to the light incident surface 19b which is the end surface of the light guide plate 19, and to uneven brightness in the light emitted from the light output surface 19a which is the plate surface of the light guide plate 19. Is less likely to occur.

The chassis 22 is provided in such a manner that the light guide plate 19 supports the light guide plate 19 from the side opposite to the liquid crystal panel 11 and bulges to the side opposite to the light guide plate 19 from the light guide plate support 22a1. In addition, the LED board 18 mounted on the board mounting part 37 is housed and has a board housing part 22a2 connected to the board mounting part 37, while being attached in contact with the outer surface of the board housing part 22a2. The heat dissipation member 23 is provided. In this way, it is possible to sufficiently secure an accommodation space for the LED substrate 18 attached to the substrate attachment portion 37 by the substrate accommodation portion 22a2 that bulges to the opposite side of the light guide plate 19 side from the light guide plate support portion 22a1. it can. Thereby, since the freedom degree in the design regarding the dimension about the plate | board thickness direction of the light guide plate 19 in LED17 provided in LED board 18 can be raised, it injects into the light-incidence surface 19b which is the end surface of the light guide plate 19 from LED17. This is useful for optimizing the light incident efficiency. Moreover, the heat generated as the LED 17 emits light is transmitted from the LED substrate 18 and the substrate mounting portion 37 to the substrate housing portion 22a2, and then to the light guide plate support portion 22a1, and at the same time, the substrate housing portion 22a2. The heat is transmitted to the heat radiating member 23 attached in contact with the outer surface. As described above, since the LED substrate 18 is directly attached to the substrate attachment portion 37, heat from the LED 17 is less likely to be dissipated compared to a case where the LED substrate 18 is attached to the substrate attachment portion 37 via a heat dissipation member. It has become. In that respect, if the heat radiating member 23 is attached so as to be in contact with the outer surface of the substrate housing portion 22a2, as described above, heat radiation can be reduced while reducing an assembly error that may occur between the LED substrate 18 and the substrate attachment portion 37. The performance can be fully supplemented.

The heat radiating member 23 includes a first heat radiating portion 23 a that is parallel to and in contact with the outer surface of the substrate housing portion 22 a 2, and a second heat radiating portion 23 b that is continuous with the first heat radiating portion 23 a and is parallel to the substrate mounting portion 37. The frame 13 has a frame-like part (frame base part) 13a that holds the liquid crystal panel 11 from the side opposite to the light guide plate 19 side, and projects from the frame-like part 13a along the second heat radiating part 23b. 2 has a mounting plate portion 13c attached in contact with the heat radiating portion 23b, and the insertion hole 32 is disposed between the board mounting portion 37 and the mounting plate portion 13c. On the other hand, the heat radiating member 23 is formed with a communication notch 33 through which the flexible substrate 27 is passed by communicating with the insertion hole 32. In this way, the heat from the substrate housing portion 22a2 is transmitted from the first heat radiating portion 23a to the second heat radiating portion 23b in the heat radiating member 23, and then attached to the second heat radiating portion 23b. To the mounting plate portion 13c. Thereby, since heat dissipation of LED17 can be aimed at using the flame | frame 13, it is further excellent in heat dissipation performance. In addition, the heat dissipation member 23 attached to the board accommodating portion 22a2 of the chassis 22 and the attachment plate portion 13c of the frame 13 has an insertion hole 32 disposed between the attachment plate portion 13c and the substrate attachment portion 37. Since the communication cutout portion 33 that is in communication is formed, the flexible substrate 27 can be connected to the touch panel drive circuit substrate 26 through the insertion hole 32 and the communication cutout portion 33.

Further, a gap C1 is provided between the second heat radiating portion 23b of the heat radiating member 23 and the board mounting portion 37, and the insertion hole 32 is disposed at a position facing the gap C1. In this way, the flexible substrate 27 passed through the insertion hole 32 is formed in the gap C 1 between the second heat radiating portion 23 b and the substrate mounting portion 37 in addition to the communication cutout portion 33 of the heat radiating member 23. By being passed, it is more easily routed to the touch panel drive circuit board 26.

The display panel is a liquid crystal panel 11 in which liquid crystal is sealed between a pair of

substrates

11a and 11b. Such a display device can be suitably applied to the liquid crystal display device 10 for various uses, such as a display of a tablet personal computer or a portable information terminal.

<Embodiment 2>
A second embodiment of the present invention will be described with reference to FIG. In this Embodiment 2, what changed the formation range of the penetration hole 132 is shown. In addition, the overlapping description about the same structure, an effect | action, and effect as above-mentioned Embodiment 1 is abbreviate | omitted.

As shown in FIG. 12, the insertion hole 132 according to the present embodiment is formed only in the inner peripheral portion 113a1 inside the step GP in the frame-shaped portion 113a, and the insertion hole described in the first embodiment described above. The forming range is narrower than 32 (see FIG. 8). The formation range in the Y-axis direction in the insertion hole 132 is approximately the same as the gap C1 provided between the second heat radiating portion 123b of the heat radiating member 123 and the board mounting portion 137. By limiting the formation range of the insertion hole 132 in this way, the flexible substrate 127 inserted from the front side into the insertion hole 132 can be easily guided to the gap C1.

<Embodiment 3>
A third embodiment of the present invention will be described with reference to FIGS. In the third embodiment, a taper surface 42 is formed at the hole edge of the insertion hole 232. In addition, the overlapping description about the same structure, an effect | action, and effect as above-mentioned Embodiment 2 is abbreviate | omitted.

As shown in FIG. 13, a tapered surface 42 is formed at the hole edge on the back side of the insertion hole 232 formed in the frame-like portion 213a according to the present embodiment. The tapered surface 42 has a gradient such that the opening width to the back side of the insertion hole 232 increases as it approaches the opening end. As a result, when the flexible board 227 is passed through the insertion hole 232, the hole edge on the back side is hardly caught by the flexible board 227, and it is difficult for the situation that the flexible board 227 is damaged.

Subsequently, a method of forming the tapered surface 42 when manufacturing the frame 213 will be described. When the frame 213 is formed by press working, the insertion hole 232 is formed by punching the frame-shaped portion 213a partially from the front side to the back side along the Z-axis direction. At this time, as shown in FIG. 14, a sharp burr BU may be formed on the back side edge of the insertion hole 232 located on the front side in the punching direction so as to protrude to the back side. For this reason, after the insertion hole 232 is formed, a surface pressing process is performed in which a pressing tool PT wider than the insertion hole 232 is pressed against the hole edge on the back side from the back side to the front side. Then, as shown in FIG. 15, the tapered surface formed on the distal end surface of the pressing tool PT is transferred to the hole edge on the back side of the insertion hole 232 to form the tapered surface 42.

As described above, according to the present embodiment, the tapered surface 42 is formed at the hole edge of the insertion hole 232 in the frame 213. In this way, when the flexible board 227 is passed through the insertion hole 232, it is difficult for the flexible board 227 to be damaged by the hole edge of the insertion hole 232.

<Embodiment 4>
A fourth embodiment of the present invention will be described with reference to FIG. This Embodiment 4 shows what changed the formation position of the taper surface 342 and the formation method of the penetration hole 332 from above-mentioned Embodiment 2. FIG. In addition, the overlapping description about the same structure, an effect | action, and effect as above-mentioned Embodiment 2 is abbreviate | omitted.

As shown in FIG. 16, the tapered surface 342 according to the present embodiment is formed on the front edge of the insertion hole 332 formed in the frame-like portion 313a. In this way, when the flexible board 327 is passed from the front side to the insertion hole 332, the flexible board 327 can be smoothly guided to the back side by the tapered surface 342 formed at the hole edge on the front side. Excellent in properties. Both the insertion hole 332 and the tapered surface 342 are formed by partially cutting the frame-like portion 313a.

<Embodiment 5>
Embodiment 5 of the present invention will be described with reference to FIG. In the fifth embodiment, the position of the mounting plate portion 413c of the frame 413 is changed. In addition, the overlapping description about the same structure, an effect | action, and effect as above-mentioned Embodiment 1 is abbreviate | omitted.

As shown in FIG. 17, the mounting plate portion 413 c according to the present embodiment does not have a gap between the plate surface facing inward and the outer plate surface of the substrate mounting portion 437, and is in contact with the plate surface. It is arranged in a form. That is, the mounting plate portion 413 c is arranged in a form sandwiched between the second heat radiating portion 423 b of the heat radiating member 423 and the board mounting portion 437. With such a configuration, the heat generated from the LED 417 is directly transmitted from the board mounting portion 437 to the mounting plate portion 413c, and to the mounting plate portion 413c via the board housing portion 422a2 and the heat dissipation member 423. Heat is dissipated by being transmitted. As described above, as the position of the mounting plate portion 413c is changed, the arrangement of the insertion holes 432 is also changed. Specifically, the insertion holes 432 are arranged in the frame-shaped portion 413a with respect to the mounting plate portion 413c. It is arranged at a position adjacent to the outside. A communication notch 433 that communicates with the insertion hole 432 is formed in a portion of the heat dissipation member 423 that overlaps with the insertion hole 432 in a plan view (including the second heat dissipation part 423b).

<Embodiment 6>
Embodiment 6 of the present invention will be described with reference to FIG. In this Embodiment 6, what changed the formation range of the communication notch part 533 is shown. In addition, the overlapping description about the same structure, an effect | action, and effect as above-mentioned Embodiment 1 is abbreviate | omitted.

The communication notch 533 according to the present embodiment is formed in a hole shape penetrating the first heat radiating portion 523a in the heat radiating member 523, as shown in FIG. The communication notch 533 is formed at a position adjacent to the second heat radiating portion 523b in the first heat radiating portion 523a and is disposed so as to face the gap C1 provided between the second heat radiating portion 523b and the board mounting portion 537. It is said that. Thus, the flexible substrate 527 passed through the insertion hole 532 is connected to the touch panel drive circuit substrate 526 on the back side by passing through the gap C1 and then passing through the communication cutout portion 533.

<Embodiment 7>
A seventh embodiment of the present invention will be described with reference to FIG. In the seventh embodiment, a heat dissipation member is omitted. In addition, the overlapping description about the same structure, an effect | action, and effect as above-mentioned Embodiment 1 is abbreviate | omitted.

In the present embodiment, as shown in FIG. 19, the mounting plate portion 613c of the frame 613 is directly fixed to the substrate mounting portion 637 by the screw member SM, and the heat dissipating member 23 ( (See FIG. 5) is omitted. Such a configuration is suitable when the heat generated from the LED 617 is small, and the manufacturing cost can be reduced by the amount that the heat radiating member can be omitted. Further, the insertion hole 632 is arranged at a position adjacent to the outside of the attachment plate portion 613c in the frame-shaped portion 613a.

<Other embodiments>
The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention.
(1) In addition to the above-described embodiments, the specific formation range of the plate surface light-shielding layer formed on the cover panel can be changed as appropriate. For example, the plate surface light shielding layer may be formed in a range that overlaps with the outer peripheral portion of the touch panel but does not overlap with the outer peripheral portion of the liquid crystal panel.

(2) In each of the above-described embodiments, the bent position where the rising portion constituting the substrate housing portion rises from the end portion of the light guide plate support portion is the side opposite to the LED side from the light incident surface of the light guide plate. However, the present invention includes those in which the bending position is on the LED side with respect to the light incident surface and those that are flush with the light incident surface.

(3) In each of the above embodiments, a slight gap is provided between the LED substrate and the housing bottom of the substrate housing. However, the LED substrate is brought into contact with the housing bottom without the gap. Or conversely, a configuration in which a sufficient gap is provided between the LED substrate and the housing bottom is also included in the present invention.

(4) In each of the above-described embodiments, the first heat radiating portion of the heat radiating member is configured to be in contact with the outer surface of the housing bottom portion of the substrate housing portion. For example, the first heat radiating portion is bent along the bottom plate of the chassis. It is also possible to adopt a configuration in which the first heat radiating portion is arranged in contact with the outer surface of the light guide plate support portion in addition to the housing bottom portion of the substrate housing portion.

(5) In each of the embodiments described above, the heat radiating member has a configuration including the first heat radiating portion and the second heat radiating portion. However, the second heat radiating portion is removed, and the heat radiating member is changed only by the first heat radiating portion. It is also possible to configure. On the contrary, it is possible to remove the first heat radiating portion and configure the heat radiating member only by the second heat radiating portion. In that case, the plate surface inside the second heat radiating portion is changed to the plate surface outside the substrate mounting portion. What is necessary is just to make it contact.

(6) In each of the above-described embodiments, the LED substrate is attached to the substrate attachment portion with a fixing member (double-sided tape). However, as other fixing means, screw members, rivets, and substrate attachment portions are used. It is also possible to use a clip having an elastic locking piece for locking to the hole edge of the formed mounting hole, an adhesive made of an ultraviolet curable resin material, an epoxy resin material, or the like.

(7) The configurations described in the fifth to seventh embodiments can be applied to the configurations described in the third and fourth embodiments. Similarly, the configuration of the sixth embodiment can be applied to the configuration described in the second embodiment.

(8) In Embodiment 5 described above, the second heat radiating portion, the mounting plate portion, and the substrate mounting portion of the heat radiating member are in contact with each other in an overlapping manner, and the second heat radiating portion and the mounting plate portion are fixed by the screw members. Although shown, in addition to the second heat radiating portion and the mounting plate portion, the substrate mounting portion can also be fixed by one screw member.

(9) In each of the above-described embodiments, one LED substrate is disposed along the light incident surface of the light guide plate. However, two or more LED substrates are disposed along the light incident surface of the light guide plate. Those arranged in a line are also included in the present invention.

(10) In each of the above-described embodiments, the LED substrate is disposed so as to face the one end surface on the long side of the light guide plate. However, the LED substrate is disposed on the one end surface on the short side of the light guide plate. In addition, those arranged in an opposing manner are also included in the present invention.

(11) In addition to the above (10), the LED substrate is disposed opposite to the pair of end surfaces on the long side of the light guide plate, or the LED substrate is disposed on the pair of end surfaces on the short side of the light guide plate. Those arranged opposite to each other are also included in the present invention.

(12) In addition to the above (10) and (11), the LED substrate is arranged opposite to any three end surfaces of the light guide plate, or the LED substrate is attached to all four end surfaces of the light guide plate. In addition, those arranged in an opposing manner are also included in the present invention.

(13) In each of the above-described embodiments, the projected capacitive type is exemplified as the touch panel pattern of the touch panel, but other than that, the touch panel of the surface capacitive type, the resistive film type, the electromagnetic induction type, etc. The present invention can also be applied to those employing patterns.

(14) In each of the above-described embodiments, the cover panel and the touch panel are each fixed to the frame-shaped portion of the frame by the fixing members. The cover panel and the touch panel may be sandwiched and held between the frames by a frame-shaped second frame that holds the frame from the front side.

(15) In each of the above-described embodiments, the case where the functional plate member disposed between the cover panel and the liquid crystal panel is a touch panel has been described. A parallax barrier panel (switch liquid crystal panel) having a parallax barrier pattern for allowing an observer to observe a stereoscopic image (3D image, three-dimensional image) by separating an image displayed on the display surface of the liquid crystal panel by parallax It is also possible to use. It is also possible to arrange the touch panel and the parallax barrier panel between the cover panel and the liquid crystal panel.

(16) It is also possible to form a touch panel pattern on the parallax barrier panel described in (15) above, and to have the touch panel function on the parallax barrier panel.

(17) In each of the above-described embodiments, the case where the screen size of the liquid crystal panel used in the liquid crystal display device is set to about 20 inches has been exemplified. It is. In particular, when a liquid crystal panel with a screen size of more than 20 inches is used, the bending that can occur in the cover panel or the touch panel tends to increase. Therefore, a frame is interposed between the liquid crystal panel and the touch panel. It is preferable to apply a configuration in which a gap is provided.

(18) In each of the above-described embodiments, the color portion of the color filter included in the liquid crystal panel is exemplified as three colors of R, G, and B. However, the color portion may be four or more colors.

(19) In each of the above-described embodiments, the LED is used as the light source. However, other light sources can be used.

(20) In the above-described embodiments, the frame is made of metal, but the frame can be made of synthetic resin.

(21) In each of the above-described embodiments, the case where the tempered glass subjected to the chemical tempering treatment is used as the cover panel is shown. It is.

(22) In each of the above-described embodiments, the cover panel using the tempered glass is shown, but it is of course possible to use a normal glass material (non-tempered glass) or a synthetic resin material that is not tempered glass.

(23) In each of the above-described embodiments, the edge light type is exemplified as the backlight device included in the liquid crystal display device, but the present invention includes a backlight device of a direct type.

(24) In each of the above-described embodiments, a transmissive liquid crystal display device including a backlight device that is an external light source has been exemplified. However, the present invention provides a reflective liquid crystal display device that performs display using external light. In this case, the backlight device can be omitted.

(25) In each of the above embodiments, a liquid crystal display device with a horizontally long display screen is exemplified, but a liquid crystal display device with a vertically long display screen is also included in the present invention. A liquid crystal display device having a square display screen is also included in the present invention.

(26) In each of the embodiments described above, a TFT is used as a switching element of a liquid crystal display device. However, the present invention can be applied to a liquid crystal display device using a switching element other than TFT (for example, a thin film diode (TFD)), and color In addition to the liquid crystal display device for display, the present invention can also be applied to a liquid crystal display device for monochrome display.

(27) In each of the above embodiments, a liquid crystal display device using a liquid crystal panel as an example of the display panel has been illustrated. Applicable. In that case, the backlight device can be omitted.

DESCRIPTION OF SYMBOLS 10 ... Liquid crystal display device (display apparatus), 11 ... Liquid crystal panel (display panel), 11a ... CF board | substrate (board | substrate), 11b ... Array board | substrate (board | substrate), 12 ... Backlight apparatus (illumination device) 13,213,613 ... Frame, 13a, 113a, 213a, 313a, 413a, 613a ... Frame-like part (frame base part), 13c, 413c, 613c ... Mounting plate part, 14 ... Touch panel (functional plate-like member), 15 ... Cover panel (protection) (Plate material), 15EP ... overhang portion, 17, 417, 617 ... LED (light source), 18 ... LED substrate (light source substrate), 19 ... light guide plate, 19a ... light emitting surface (plate surface), 19b ... light incident surface ( End face), 22 ... chassis, 22a1 ... light guide plate support, 22a2 ... substrate housing part, 23, 123, 423, 523 ... heat dissipation member, 23a, 523a ... first heat dissipation part, 2 b, 123b, 423b, 523b ... second heat radiation part, 26,526 ... touch panel drive circuit board (drive member), 27,127,227,327,427,527 ... flexible substrate (connection member), 30 ... first fixing Member, 31 ... second fixing member, 32, 132, 232, 332, 432, 532, 632 ... insertion hole, 33, 433, 533 ... communication notch, 37, 137, 437, 537, 637 ... substrate mounting part, 38 ... Rising part, 39 ... Accommodating bottom part, 41 ... Plate surface light shielding layer (light shielding layer), 42,342 ... Tapered surface, C1 ... Gap, DS ... Display surface

Claims

A display panel having a display surface for displaying an image;
A functional plate-like member having translucency and having a facing surface that is opposed to the display surface of the display panel;
While protecting the said functional plate-shaped member and having translucency, it has the opposing surface which is arranged on the opposite side to the said display panel side with respect to the said functional plate-shaped member, and makes opposing shape A protective plate material having an overhanging portion projecting outward from the outer edge of the functional plate-shaped member;
A control member that is disposed on the side opposite to the functional plate-like member side with respect to the display panel, and that controls driving for realizing the function of the functional plate-like member;
One end side is electrically connected to the end of the functional plate-like member, whereas the other end side is electrically connected to the control member;
It forms a frame shape that follows the protruding portion of the protective plate material and the outer peripheral portion of the functional plate member, and the outer peripheral portion of the protective plate member and the functional plate member on the display panel side. And a frame formed between the outer peripheral portion of the functional plate-like member and the outer peripheral portion of the display panel, and having an insertion hole through which the connecting member is inserted. A display device comprising:
A light shielding layer is formed on a plate surface of an outer peripheral portion of the protective plate member to block light in a form overlapping with the outer peripheral portions of the functional plate member and the display panel and overlapping with the insertion hole. Item 4. The display device according to Item 1.
3. The display device according to claim 1, wherein an outer peripheral portion of the functional plate member and the protruding portion of the protective plate member are attached to the frame.
A first fixing member for fixing the outer peripheral portion of the functional plate-like member and the frame; and a second fixing member for fixing the protruding portion of the protective plate material and the frame;
The display device according to claim 3, wherein the insertion hole is disposed between the first fixing member and the second fixing member in the frame.
The display device according to any one of claims 1 to 4, wherein at least a part of the frame is exposed to the outside to form an appearance of the display device.
The display panel is disposed on the side opposite to the display surface side, and includes a lighting device that supplies light to the display panel.
The lighting device includes:
A light source;
A light guide plate that is arranged on the opposite side of the display surface with respect to the display panel, has an end surface facing the light source, and emits light from the plate surface toward the display panel;
The display device according to claim 1, further comprising: a chassis that holds the display panel and the light guide plate between the frame and accommodates the light source.
The illumination device includes a light source substrate on which the light source is provided,
The display device according to claim 6, wherein a part of the chassis has a facing surface that is opposed to an end surface of the light guide plate, and the light source substrate is attached to the facing surface.
The chassis is provided with a light guide plate support part that supports the light guide plate from the side opposite to the display panel side, and a shape that bulges to the side opposite to the light guide plate side than the light guide plate support part, Whereas the light source substrate attached to the substrate attachment portion is accommodated and the substrate accommodation portion is continuous with the substrate attachment portion,
The display device according to claim 7, further comprising a heat dissipating member attached in contact with an outer surface of the substrate housing portion.
The heat dissipating member includes a first heat dissipating part parallel to the outer surface of the substrate housing part and in contact with the outer surface, and a second heat dissipating part connected to the first heat dissipating part and parallel to the substrate mounting part. ,
The frame includes a frame base that holds the display panel from the side opposite to the light guide plate, and a mounting plate that protrudes from the frame base along the second heat radiating portion and is in contact with the second heat radiating portion. And
Further, the insertion hole is disposed between the board attachment portion and the attachment plate portion, whereas the connection member is passed through the heat dissipation member by communicating with the insertion hole. The display device according to claim 8, wherein a communication cutout is formed.
A gap is provided between the second heat dissipating part of the heat dissipating member and the board attaching part,
The display device according to claim 9, wherein the insertion hole is disposed at a position facing the gap.
The display device according to any one of claims 1 to 10, wherein a tapered surface is formed at a hole edge of the insertion hole in the frame.
12. The display device according to claim 1, wherein the display panel is a liquid crystal panel in which liquid crystal is sealed between a pair of substrates.