JP2012004056A - Display device - Google Patents

Abstract

A distance from a peripheral edge of a display area of a display panel included in a display device to an outer surface of the display device is shortened.
A liquid crystal display panel having a display area and a peripheral area thereof, a display area light-emitting area, a display area light-emitting peripheral area provided around the display area light-emitting area, and an outer periphery of the display area light-emitting peripheral area A main body of the frame, comprising: a light guide plate having a plurality of protrusions integrally provided in a shape protruding outward; and a frame having a plurality of panel holding portions for holding a peripheral region of the display panel. Between the light guide plate and the display region light emitting peripheral portion of the light guide plate has the same width as the length of the protrusion of the light guide plate protruding outward from the display region light emitting peripheral portion of the light guide plate. The protrusion arrangement area where the protrusion is arranged is interposed so as to surround the display area light emitting peripheral portion of the light guide plate over the entire circumference thereof, and the display panel is disposed within the protrusion arrangement area in the panel. It is held by sandwiching member.
[Selection] Figure 1

Description

  The present invention relates to a display device including a display panel and a planar light source.

  A display panel; a planar light source arranged to overlap the display panel and illuminating the display panel; and a frame formed in a frame shape and housing the display panel and the planar light source. There is known a display device (see Patent Document 1) in which the display panel is supported by a step portion of a frame disposed outside the planar light source.

JP 2010-85548 A

By the way, for example, in a display device mounted on a digital camera or a mobile phone, it is desired to reduce the outer dimensions. However, in the above-described display device, since the step portion that supports the display panel is provided over the entire circumference of the frame, the frame-shaped portion of the display device that is disposed outside the display area of the display panel. There has been a problem that the width, that is, the distance from the periphery of the display area to the outer surface of the display device becomes long.
An object of the present invention is to provide a display device in which the distance from the peripheral edge of the display region to the outer surface of the display device is shortened.

  According to a first aspect of the present invention, a display device includes a display panel having a display area for displaying an image and a peripheral area provided around the display area, a frame-shaped main body, and a frame extending from the main body. And a light guide plate disposed so as to overlap the display panel on the inner side of the frame, the frame having a panel holding portion that is provided so as to protrude inward of the display panel and holds the peripheral area of the display panel from the rear side. The light guide plate is integrally formed with a main portion that overlaps the display area of the display panel and a shape projecting outward of the main portion on the periphery of the main portion. A protruding portion disposed in a region where the protruding portion is disposed between the main body portion of the frame and the main portion of the light guide plate. It is interposed so as to surround the entire circumference, The protruding portion arrangement region has the same width as the length of the protruding portion protruding outward from the main portion of the light guide plate, and the total length of the side where the protruding portion of the main portion of the light guide plate is formed. The display panel is held by the panel holding portion in the protruding portion arrangement region.

  According to a second aspect of the present invention, the main portion of the light guide plate equalizes the display area light emitting section that irradiates the display area of the display panel with illumination light, and the illumination light around the display area light emitting section. And a display area light emitting peripheral part provided around the display area light emitting part, and the protruding part protrudes outward of the display area light emitting peripheral part at a peripheral edge of the display area light emitting peripheral part. It is characterized by being integrally provided in a shape.

  According to a third aspect of the present invention, in the display device according to the first or second aspect, the one of the side surfaces of the protruding portion of the light guide plate faces the inner side surface of the main body portion of the frame. The protrusion is arranged over the entire width of the protrusion arrangement area, and the panel holder is arranged in the protrusion so that one of the side faces of the panel holder faces the outer surface of the main part of the light guide plate. It is arranged over the entire width of the region.

  According to a fourth aspect of the present invention, in the display device according to any one of the first to third aspects, the light guide plate is formed by injection molding of a transparent resin, and the protruding portion is an eject pin at the time of the injection molding. It is an eject pin contact part which contacts.

  According to a fifth aspect of the present invention, in the display device according to any one of the first to fourth aspects, the display panel and the frame have a rectangular planar shape.

  According to a sixth aspect of the present invention, in the display device according to any one of the first to fifth aspects, the panel holding portion and the protruding portion are adjacent to each other.

  According to a seventh aspect of the present invention, in the display device according to any one of the first to sixth aspects, a plurality of the panel holding portions are provided on at least one side of the main body portion of the frame. The protruding portion is disposed between two adjacent panel holding portions among the panel holding portions.

  The invention according to claim 8 is the display device according to claim 6 or 7, wherein the first predetermined region on the side surface of the protruding portion and the first surface of the protruding portion among the side surfaces of the panel holding portion. The predetermined region and the second predetermined region facing each other are parallel to each other.

  A ninth aspect of the present invention is the display device according to any one of the first to eighth aspects, wherein the planar shape of the protruding portion is any one of a rectangular shape, a triangular shape, an arc shape, and a corrugated shape. It is characterized by being.

  A tenth aspect of the present invention is the display device according to any one of the first to ninth aspects, wherein the planar shape of the panel holding portion is any one of a rectangular shape, a triangular shape, an arc shape, and a corrugated shape. It is characterized by

  According to the display device of the present invention, the distance from the peripheral edge of the display area of the display panel to the outer surface of the display device can be shortened.

The disassembled perspective view of the display apparatus which shows 1st Embodiment of this invention. The perspective view which shows the one part assembly state of the display apparatus concerning 1st Embodiment. The expanded sectional view which cuts and shows the display apparatus concerning 1st Embodiment along the III-III line | wire of FIG. The partial expanded sectional view which cuts and shows the display apparatus concerning 1st Embodiment along the IV-IV line of FIG. The perspective view which shows the light-guide plate of the display apparatus concerning 2nd Embodiment of this invention. The perspective view which shows the flame | frame of the display apparatus concerning 2nd Embodiment of this invention. The perspective view which shows the light-guide plate used for the conventional display apparatus as a comparative example. The fragmentary sectional view of the conventional display apparatus as a comparative example.

[Embodiment 1]
1 to 4 show a display device according to a first embodiment of the present invention, FIG. 1 is an exploded perspective view of the display device, and FIG. 2 is a perspective view showing an assembled state of a part of the display device. 3 is an enlarged cross-sectional view showing the display device cut along line III-III in FIG. 2, and FIG. 4 is a partial enlarged cross-sectional view showing the display device cut along line IV-IV in FIG.

  As shown in FIGS. 1 to 4, the display device 1 according to the present invention includes a display panel 10 having a rectangular planar shape, and a planar light source 20 disposed on the rear side so as to overlap the display panel 10. A frame 30 having a rectangular planar shape for accommodating the display panel 10 and the planar light source 20, and a frame 30 for accommodating the display panel 10 and the planar light source 20, A state where the rear case 40 accommodated from the rear side of the frame 30 and the peripheral area 10b which is an area excluding the display area 10a on the front surface of the display panel 10 (the front surface of the pair of main surfaces of the display panel) are covered. Thus, a front case 50 fitted from the front side of the rear case 40 is provided.

  The display panel 10 is not shown, for example, formed on at least one of a pair of transparent substrates 11 and 12 facing each other with a predetermined gap, and the pair of transparent substrates 11 and 12 facing each other. A plurality of transparent electrodes, a liquid crystal 13 sealed in a gap between the substrates 11 and 12, a sealing material 14 for sealing the liquid crystal 13 between the pair of substrates 11 and 12, and the pair of substrates 11 , 12 and a pair of polarizing plates 15, 16.

  As shown in FIG. 1, the front surface of the display panel 10 is formed in a region surrounded by a two-dot chain line α inside the pair of polarizing plates 15 and 16, and a display region 10a on which an image is displayed. It is divided into a peripheral area 10b which is an area excluding the display area 10a.

  The display panel 10 has one substrate 12, that is, one side of the rear substrate 12 extended, and an integrated circuit (not shown) for driving the display panel 10 is placed on the extended portion 12a. Connected to the integrated circuit is a wiring board 17 on which wirings (not shown) for supplying a plurality of signals and driving signals such as a power source are formed. The wiring substrate 17 extends from one substrate 12 of the display panel 10 in a direction parallel to the substrate surface. The wiring board 17 is also provided with a light source wiring (not shown) for supplying a signal for driving a planar light source 20, which will be described later, a power source and the like.

  Examples of the display panel 10 include a twisted nematic type display panel in which liquid crystal molecules of the liquid crystal 13 are substantially twisted by 90 ° between the pair of substrates 11 and 12, and between the pair of substrates 11 and 12. The STN type in which the liquid crystal molecules are twisted by 90 ° or more, the vertical alignment type in which the liquid crystal molecules are aligned substantially perpendicular to the surfaces of the substrates 11 and 12, and the substrate 11 with the molecular long axes of the liquid crystal molecules aligned in one direction. , 12 non-twisted horizontal alignment type aligned substantially parallel to the plane, bend alignment type that bends liquid crystal molecules, or a liquid crystal display panel using ferroelectric or antiferroelectric liquid crystal can do.

  Further, the display panel 10 is formed by insulating one of a pair of substrates 11 and 12, for example, an inner surface of the rear substrate 12, and a pixel electrode for forming a plurality of pixels, from the pixel electrode. A horizontal electric field control type liquid crystal display panel in which a plurality of counter electrodes are provided and a horizontal electric field (an electric field in a direction along the substrate surface) is generated between the electrodes to change the alignment state of liquid crystal molecules. Good. Still further, it is an active drive type using thin film transistors, or a passive drive type liquid crystal display panel in which a plurality of row electrodes and a plurality of column electrodes are arranged to cross each other, or an EL display panel using an electroluminescence effect. May be.

  The planar light source 20 disposed so as to overlap the display panel on the rear side of the display panel 10 is made of a transparent plate-like member having a substantially rectangular planar shape, and is provided on one side of the rectangle. The light guide plate 21 that emits the light incident from the incident end surface 21a from one light exit surface 21b, the reflection plate 22 that reflects the light emitted to the rear side of the light guide plate 21, and the front side of the light guide plate 21 A plurality of prism sheets 23 a and 23 b and a diffusion sheet 23 c disposed on the light guide plate 21, a light source 24 composed of a plurality of LEDs disposed opposite to the incident end surface 21 a of the light guide plate 21, and the light source 24 of the light guide plate 21. A light source wiring board 25 that is held at a position facing the incident end face 21a and supplies power to the plurality of LEDs.

The light guide plate 21 is formed by injection molding in which a transparent acrylic resin or the like is injected into a mold and has a rectangular main portion that emits light toward the display panel 10. ing. The main part of the light guide plate 21 includes a display area light-emitting area 21b ₁ corresponding to the display area 10a of the display panel 10 and the display area light-emitting area, as shown in FIG. established on the rim of 21b _1, and a display area emitting surrounding area 21b ₂ Metropolitan for to uniform the illumination light quantity in the periphery of the display area light emitting area 21b _1. This the periphery of the display area emitting surrounding area 21b _2, a plurality of ejector pins abutting portion 21c projecting toward the outside of the display area emitting surrounding area 21b ₂ is integrally provided with the light guide plate 21. The eject pin is a pin that pushes out a molded part (light guide plate) from the mold during injection molding. The eject pin abuts on the eject pin abutting portion 21c, and the light guide plate 21 is ejected from the mold. Extruded.

That is, the light guide plate 21 is provided with a display area light emitting peripheral area 21b ₂ having a predetermined width outside the display area light emitting area 21b ₁ , and an eject pin with which an eject pin abuts further outward. A plurality of contact portions 21c are formed. In this embodiment, these eject pin contact portions 21c are formed as projecting portions having a rectangular planar shape, and a plurality of eject pin contact portions 21c are arranged around the display area light emitting peripheral area 21b ₂ at substantially equal intervals. The plurality of prism sheets 23 a and 23 b and the diffusion sheet 23 c arranged on the front surface side of the light guide plate 21 are formed in the same shape as the planar shape of the light guide plate 21 and are arranged so as to overlap the light guide plate 21. ing.

  A light source 24 composed of one or a plurality of LEDs (light emitting diodes) or the like is disposed on the incident end face 21 a of the light guide plate 21, and this light source 24 is located behind the LED holding portion 25 a of the light source wiring board 25. And connected to a wiring (not shown) formed on the light source wiring substrate 25. Further, the extension board 25b formed by bending the LED holding part 25a into an L shape and having a wiring (not shown) is extended to the light source wiring of the wiring board 17 and connected to each other. Yes. That is, the lighting state of the light source 24 of the surface light source is controlled by a current supplied from the light source wiring of the wiring board 17 through the wiring of the light source wiring board 25.

  The reflection plate 22 is made of a resin film having light reflection characteristics, a resin film coated with a metal film, or the like, and the light incident on the light guide plate 21 is directed from the light guide plate 21 to the display panel 10. The rear side of the light guide plate 21 so that at least a part of the light emitted in a direction other than that is returned to the light guide plate 21 and emitted from the light exit surface 21b of the light guide plate 21 toward the display panel 10. Is arranged.

  The display panel 10 and the planar light source 20 are held by a frame-like frame 30 having a rectangular planar shape formed of resin. The frame 30 includes a frame-shaped panel storage portion 30a that supports the peripheral portion of the display panel 10, and a planar light source storage portion 30b that stores the planar light source 20 behind the panel storage portion 30a. ing.

The planar light source storage part 30b of the frame 30 is provided with a frame part 30b ₂ and a plurality of panel holding parts 30b ₁ protruding inward from the frame part 30b ₂ . A plurality of the panel holding portions 30b ₁ are provided on at least one side of the frame portion 30b _{2. In} this embodiment, two or three of the panel holding portions 30b ₁ are provided for one side of the frame portion 30b _2. Is provided. Also, the ejector pin contact portion 21c is disposed between the two panels holding portion 30b ₁ adjacent one of said plurality of panel holder 30b _1. At this time, the two adjacent panel holding portions 30b ₁ are adjacent to the eject pin contact portion 21c. As shown in FIG. 2, a planar light source 20 comprising the light guide plate 21 and two prism sheets 23a, 23b, a diffusion sheet 23c, and a reflection plate 22 formed in the same shape as the light guide plate 21 is provided on the surface. Is stored in the light source storage unit 30b.

At this time, between the frame portion 30b ₂ of the frame 30 and the display region light emitting peripheral area 21b _{2 of the} light guide plate 21, the protruding portion arrangement region 70 in which the eject pin contact portion 21c is arranged is The light guide plate 21 is interposed so as to surround the display area light emitting peripheral area 21b ₂ over the entire circumference. The protruding portion arrangement region 70 has a predetermined length that is the same as the length that the eject pin contact portion 21 c of the light guide plate 21 protrudes outward from a predetermined side of the display region light emitting peripheral area 21 b ₂ of the light guide plate 21. Of the display area light emitting peripheral area 21b ₂ of the light guide plate 21 over the entire length of a predetermined side where the eject pin contact portion 21c is formed. In the present embodiment, the predetermined width of the projecting portion arrangement area 70 is substantially constant along the entire circumference of the display area light emitting peripheral area 21 b ₂ of the light guide plate 21.

The eject pin contact portion 21c is arranged in the protruding portion arrangement region 70 so that one of the side surfaces 21b ₃ of the eject pin contact portion 21c of the light guide plate 21 faces the inner side surface 30b ₃ of the frame portion 30b _2. The panel 30 is arranged so that _one of the side faces 30b ₄ of the panel holding portion 30b ₁ provided on the frame 30 faces the outer side face 21b ₄ of the display area light emitting peripheral area 21b ₂ of the light guide plate 21. The holding portion 30b ₁ is arranged over the entire width of the protruding portion arrangement region 70.

A second predetermined area of the side surface 21b ₃ of the eject pin abutting portion 21c and a second predetermined area of the side surface 30b ₄ of the panel holding portion facing the first predetermined area of the eject pin abutting portion 21c. The eject pin contact portion 21c and the panel holding portion 30b ₁ are formed so that the predetermined regions are parallel to each other.

The front surface of the panel holding portion 30b ₁ holds the display panel 10. Further, the polarizing plate 16 fixed to the rear side of the display panel 10 is attached to the panel holding part 30b ₁ by the light-shielding adhesive tape 60, so that the display panel 10 is fixed to the panel holding part 30b _1. In addition, the periphery of the light guide plate 21 is shielded from light.

Further, in the panel storage portion 30a of the frame 30, a wiring board lead-out portion in which a part of the frame of the panel storage portion 30a is cut out at a portion where the wiring substrate 17 connected to the extension portion 12a of the substrate 12 leads out. 30 a ₁ and a light source wiring lead-out portion 30 a _{2 in} which a portion from which the light source wiring substrate 25 on which the light source 24 is placed is led out are formed.

  The display panel 10 is inserted into the panel storage portion 30 a provided on the front side of the frame 30, and the diffusion sheet is provided on the planar light source storage portion 30 b provided on the rear side of the frame 30. 23c, two prism sheets 23b and 23a, the light guide plate 21, and the reflection plate 22 are inserted, and a notch 40a for leading out the wiring board 17 and the light source wiring board 25 from the rear side of the frame 30. The planar light source 20 is held by the rear case 40 by arranging and fitting the rear case 40 with the wiring board 17 and the light source wiring board 25 so as to pass through the notch 40a. .

  Further, the frame 30 to which the display panel 10 is fixed and the planar light source 20 and the rear case 40 are mounted includes an opening 50a corresponding to the display area 10a of the display panel 10, the wiring board 17 on the side surface, and the light source. The front case 50 in which the notch 50b for leading out the wiring board 25 for use is formed is disposed so as to pass through the light source wiring board 25 and the wiring board 17 in the notch 50b from the front side. It is fitted.

  Next, the light source wiring board 25 is disposed at the position of the light source wiring on the wiring board 17 and the respective conductors are soldered to assemble the liquid crystal display device.

The display device includes a display region 10a for displaying an image, a display panel 10 having a peripheral region 10b provided in the periphery of the display region 10a, inwardly from the frame portion 30b ₂ and the frame portion 30b ₂ of the frame And a frame 30 having a panel holding portion 30b ₁ for holding the peripheral region 10a of the display panel 10 from the rear side, and disposed so as to overlap the display panel 10 inside the frame 30. The light guide plate 21 includes a main portion that overlaps the display area 10a of the display panel 10 and a shape that protrudes outward of the main portion. An eject pin contact portion 21c provided integrally with the main portion, and the eject pin contact portion between the frame portion 30b ₂ of the frame 30 and the main portion of the light guide plate 21. 21 Is disposed so as to surround the main portion of the light guide plate 21 over its entire circumference, and the protrusion portion disposition region 70 is located outside the main portion of the light guide plate 21. The eject pin abutment pin 21c has a width that is the same as the length that the eject pin abutment pin 21c protrudes over the entire length of the side of the main portion of the light guide plate 21 where the eject pin abutment pin 21c is formed. Since the panel 10 is held by the panel holding portion 30b ₁ in the protruding portion arrangement region 70, a frame-like portion arranged outside the display region 10a of the display panel 10 in the display device 1. The width, that is, the distance 1a from the peripheral edge of the display area 10a to the outer surface of the display device 1 can be shortened.

As a comparative example, a light guide plate 26 of a conventional liquid crystal display device is shown in FIG. 7, and a partial cross section is shown in FIG. In these drawings, the light guide plate 26 is formed by injection molding using a transparent acrylic resin, and has a main portion that emits light toward the display panel 18. The main portion of the light guide plate has a display area light emitting area 26b ₁ corresponding to the display area 18a of the display panel 18, provided on the periphery of the display area emitting area 26b _1, surrounding the display area emitting area 26b ₁ Display area light emitting peripheral area 26b ₂ for equalizing the amount of illumination light, and a frame-shaped eject pin contact portion extending from the display area light emitting peripheral area 26b _{2 at} the periphery of the display area light emitting peripheral area 26b ₂ 26c is formed.

At this time, the width of the display area light emitting area 21b ₁ in FIG. 3 along the direction parallel to one end side of the display panel is the same as the width of the display area light emitting area 26b ₁ along the direction parallel to one end side of the display panel in FIG. The width of the display area light emitting peripheral area 21b ₂ in FIG. 3 along the direction parallel to one end side of the display panel is parallel to one end side of the display area light emitting peripheral area 26b ₂ in FIG. Equal to the width along the direction. Further, the width along the direction parallel to one end side of the display panel of the eject pin contact portion 21c in FIG. 4 is along the direction parallel to one end side of the display panel of the eject pin contact portion 26c in FIG. Equal to width.

As shown in FIG. 8, the frame 31 has a planar light source storage part 31b, and the light guide plate 26 is stored in the planar light source storage part 31b. Further, with the surface-shaped light source housing portion 31b is a frame part 31b _2, and a panel holding portion 31b ₁ which is provided extending from the frame portion 31b _2, front the display panel of the panel holding portion 31b ₁ 18 peripheral regions 18b are supported.

In the comparative examples shown in FIGS. 7 and 8, the light guide plate 26 includes the display area light emitting area 26 _{b 1} and the display area light emitting peripheral area 26 _{b 2} provided at the periphery thereof, and the display area. periphery from frame-shaped ejector pin abutment portion 26c of the light emitting surrounding area 26b ₂ are formed to extend over the entire periphery of the display region emitting surrounding area 26b _2. In this case, it is necessary to provide the panel holding portion 31b ₁ of the frame 31 outside the eject pin abutting portion 26c. Therefore, in this comparative example, the edges of the display area of the width of the eject pin abutment portion 26c of the panel holding portion 31b ₁ and the width of the display area emitting surrounding area 26b ₂ all display device to the outside surface of the display device Included in the distance.

On the other hand, in the display device 1 according to the present embodiment, the light guide plate 21 is integrated with the main part so that the light guide plate 21 overlaps the display region 10a of the display panel 10 and protrudes outward from the main part. The eject pin abutting portion 21 c provided on the light guide plate 21 is disposed between the frame portion 30 b ₂ of the frame 30 and the main portion of the light guide plate 21. The protruding portion arrangement region 70 is interposed so as to surround the display region light emitting peripheral area 21b ₂ of the light guide plate 21 over the entire circumference thereof, and the protruding portion arrangement region 70 is outside the main portion of the light guide plate 21. The eject pin abutment pin 21c has a width that is the same as the length that the eject pin abutment pin 21c protrudes over the entire length of the side of the main portion of the light guide plate 21 where the eject pin abutment pin 21c is formed. Panel 10 Is held by the panel holding portion 30b ₁ in the protruding portion arrangement region 70.

With the above configuration, the display device 1 according to the present embodiment includes the region where the eject pin contact portion 21c is disposed and the region where the panel holding portion 30b ₁ is disposed in the direction in which the eject pin contact portion 21c protrudes from the light guide plate. However, since only _one of the width of the panel holding portion 30b _{1 and} the width of the eject pin contact portion 21c and the width of the display area light emitting peripheral area 21b ₂ is shared by the protrusion arrangement area 70. This is included in the distance from the periphery of the display area to the outer surface of the display device. Therefore, compared with the above-described comparative example, the present invention increases the distance from the periphery of the display area to the outer surface of the display device by the width of the eject pin abutting portion 21c or the panel holding portion 30b ₁ compared to the comparative example. Can be shortened.

In the above-described embodiment, the adhesive tape 60 is disposed on the panel holding portion 30b ₁ of the frame 30, and the display panel 10 and the frame 30 are fixed by the adhesiveness. The display device of the present invention is not limited to this, and may be fixed by sandwiching the display panel 10, the light guide plate 21 and the like between the front and rear cases 40, 50.

Display device 1 of this embodiment includes a display panel having a peripheral region 10b provided around the display region 10a and the display area 10a for displaying an image, a frame portion 30b _2, the frame from the frame portion 30b ₂ A frame 30 having a panel holding portion 30b ₁ provided so as to protrude inward of the display panel 10 and holding the peripheral region 10b of the display panel 10 from the rear side, and the display panel 10 overlapped with the inner side of the frame 30. The light guide plate 21 is arranged in the manner described above, and the light guide plate 21 has a main portion that overlaps the display area 10a of the display panel 10 and a shape that protrudes outward from the main portion. An eject pin abutting portion 21c provided integrally on the periphery of the portion, and the eject pin abutment between the frame portion 30b ₂ of the frame 30 and the main portion of the light guide plate 21. Part 21c is arranged The protruding portion arrangement region 70 is interposed so as to surround the main portion of the light guide plate 21 over the entire circumference, and the protruding portion arrangement region 70 is directed outward from the main portion of the light guide plate 21. The ejecting pin abutting portion 21c has the same width as the protruding length over the entire length of the side of the main portion of the light guide plate 21 where the ejecting pin abutting portion 21c is formed. Since it is held by the panel holding portion 30b ₁ in the protruding portion arrangement region 70, the display area of the display panel 10 in the display device 1 is equivalent to the eject pin contact portion 21c or the panel holding portion 30b _1. The width of the frame-like portion arranged outside 10a, that is, the distance 1a from the periphery of the display region 10a to the outer surface of the display device 1 can be shortened.

In addition, the main part of the light guide plate 21 equalizes the display area light emitting area 21b ₁ for irradiating the display area 10a of the display panel 10 with illumination light and the illumination light around the display area light emitting area 21b _1. Therefore, the display area light emitting peripheral area 21b ₂ provided in the periphery of the display area light emitting area 21b ₁ , and the eject pin contact portion 21c emits the display area light at the periphery of the display area light emitting peripheral area 21b _2. Since it is integrally provided in a shape protruding outward from the peripheral area 21b ₂ , it is possible to effectively irradiate the display panel with illumination light.

In the display device 1, the eject pin abuts so that one of the side surfaces 21 b ₃ of the eject pin abutment portion 21 c of the light guide plate 21 faces the inner side surface 30 b ₃ of the frame portion 30 b ₂ of the frame 30. part 21c is disposed over the entire width of the projecting portion arrangement region 70, as one of the side surfaces 30b ₄ of the panel holding portion 30b ₁ is opposed to the outer surface 21b ₄ of the main portion of the light guide plate 21, the Since the panel holding portion 30b ₁ is disposed over the entire width of the protruding portion arrangement region 70, the panel holding portion 30b ₁ can reliably hold the display panel 10.

Further, since the panel holding portion 30b ₁ and the eject pin contact portion 21c are adjacent to each other, the light guide plate 21 can be reliably aligned with the frame 30.
Also, the panel holding portion 30b ₁ between the provided plurality in at least one side of the main body, the two panel holding portion 30b ₁ adjacent one of said plurality of panel holding portion 30b ₁ of the frame 30 Since the eject pin abutting portion 21c is arranged, the total side area where the panel holding portion 30b ₁ and the eject pin abutting portion 21c are opposed to each other is widened, and the light guide plate 21 is stably attached to the frame 30. Can be fixed.

[Embodiment 2]
5 to 6 show a second embodiment of the present invention, and FIG. 5 is a perspective view showing a light guide plate 210 used in a planar light source applied to the display device of the second embodiment. 6 is a perspective view showing a frame 300 applied to the display device of the second embodiment.
The second embodiment is different from the first embodiment in the shapes of the light guide plate 210 and the frame 300 for housing it, and the other structures are the same. The description of the configuration is omitted.

As shown in FIG. 5, the light guide plate 210 is formed by injection molding in which a transparent acrylic resin or the like is injected into a mold, and is a rectangular type that emits light toward the display panel. Has a main part. Main portion of the light guide plate 210 has a display area light emitting area 210 b ₁ corresponding to the display area of the display panel, provided on the periphery of the display area light emitting area 210 b _1, lighting around the display area light emitting area 210 b ₁ The display area light emitting peripheral area 210b ₂ for equalizing the amount of light, and in the form of a wave-like curve toward the outer periphery of the display area light emitting peripheral area 210b _{2 at} the periphery of the display area light emitting peripheral area 210b ₂ An eject pin abutting portion 210 c having a protruding planar shape is provided integrally with the light guide plate 210. The eject pin abutting portion 210c is a portion where the eject pin abuts during the injection molding.

That is, the light guide plate 210 has a plurality outwardly of the display area emitting surrounding area 210 b _2, the eject pin contact portion 210c is a projecting portion having a planar shape of the corrugated shape protruding at approximately equal intervals with a curve It is arranged.

As shown in FIG. 6, the planar light source storage part 300 _{b of the} frame 300 corresponds to the recess between the frame part 300 _{b 2} and the eject pin contact part 210 c protruding around the light guide plate 210. a plurality of panel holder 300b ₁ that protrudes from the frame portion 300b ₂ inward is provided with, the panel holding portion 300b ₁ is formed so as to have a continuous curve shape in plan view.

At this time, a protruding portion arrangement region in which the eject pin contact portion 210c is arranged between the frame portion 300b ₂ of the planar light source storage portion 300b and the display region light emitting peripheral area 210b _{2 of the} light guide plate 210. 700 is interposed so as to surround the display area light emitting peripheral area 210b ₂ of the light guide plate 210 over the entire circumference thereof. The projecting portion arrangement region 700, the ejector pin contact portion 210c length equal predetermined width that protrudes in the light guide plate 210 outward from the display region emitting surrounding area 210 b ₂ of the light guide plate 210, the The light guide plate 210 has a display area light emitting peripheral area 210b _{2 that} extends over the entire length of the side where the eject pin contact portion 210c is formed. Further, in the present embodiment, the predetermined width of the projecting portion arrangement region 700, the entire periphery of the display area emitting surrounding area 210 b ₂ of all the light guide plate 210 of the display area emitting surrounding area 210 b ₂ of the light guide plate 210 Is substantially constant.

The eject pin abutting portion 210c is arranged so that the side surface 210b ₃ of the eject pin abutting portion 210c of the light guide plate 210 faces the side surface 300b ₃ of the panel holding portion 300b ₁ provided on the frame 300. It is arranged over the entire width of region 700.

Then, the light guide plate 210 is accommodated in the planar light source housing portion 300b, the plurality of front surface of the panel holding portion 300b ₁ having a planar shape of the corrugated shape for supporting the display panel 10.

The eject pin contact portion 210c of the display device according to the present embodiment has a planar shape that protrudes outwardly from the main portion of the light guide plate 210 in a corrugated curved shape, and the panel holding portion 300b ₁ Has a planar shape that protrudes in the shape of a corrugated curve toward the inside of the frame 300, and is between the frame portion 300 _{b 2} of the planar light source storage portion 300 _b and the main portion of the light guide plate 210. The protrusion arrangement area 700 where the eject pin contact portion is arranged is interposed so as to surround the display area light emitting peripheral area 210b ₂ over the entire circumference, and the protrusion arrangement area 700 includes the light guide plate. The eject pin abutting portion 210c of the main portion of the light guide plate 210 has the same width as the length from which the eject pin abutting pin 210c protrudes outward from the main portion 21. It has over the entire length of made the sides, since the display panel is held by the panel holder 300b ₁ by the protrusion arrangement area 700., located outside than the display area of the display panel of the display device The width of the frame-shaped portion, that is, the distance from the periphery of the display area to the outer surface of the display device can be shortened.

Further, since the panel holding portion 300b ₁ of the eject pin abutting portion 210c and the frame 300 of the light guide plate 210 to the corrugated shape formed by the respective curves, sharp corners without the molding of the respective members is facilitated.

Although the present invention has been described based on the above embodiments, the present invention is not limited to the above-described embodiments. For example, the present invention is not limited to the one side of the display area light emitting peripheral area 21b ₂ or the other side facing the side. The projecting portion arrangement region along the one side may be different from the width of the projecting portion arranging region along the one side.
Further, if the panel holding portion 30b ₁ can support the display panel 10, the eject pin contact portion 21c and the panel holding portion 30b ₁ do not necessarily have to be arranged over the entire width of the protruding portion arrangement region 70. .
Further, the planar shapes of the eject pin area 21c and the panel holding portion 30b ₁ may be triangular or arcuate, and various modifications and applications are possible within the scope of the gist of the present invention. .

10 ... display panel, 10a ... display area, 10b ... peripheral area,
DESCRIPTION OF SYMBOLS 11, 12 ... Transparent substrate, 12a ... Extension part, 13 ... Liquid crystal, 14 ... Sealing material, 15, 16 ... Polarizing plate, 17 ... Wiring board,
20 ... planar light source, 21, 210 ... light guide plate, 21a ... incident end face, 21b ... light-emitting surface, 21b _1, 210 b ₁ ... display area light emitting area (display area light emitting portion, the main portion), 21b _2, 210 b ₂ ... Display area light emitting peripheral area (display area light emitting peripheral part, main part) _, 21c, 210c... Eject pin abutting part (projecting part), 22 ... reflector, 23a, 23b ... prism sheet, 23c ... diffusion sheet, 24 ... light source 25 ... Light source wiring board, 25a ... LED holding part, 25b ... Extension board,
30, 300 ... frame, 30a, 300a ... panel storage, 30a ₁ ... wiring board lead-out part, 30a ₂ ... light source wiring lead-out part, 30b, 300b ... planar light source storage part, 30b ₁ , 300b ₁ ... panel holding part , 30b ₂ , 300b ₂ ... frame part (main body part),
40 ... rear case, 40a ... notch,
50 ... front case, 50a ... opening, 50b ... notch,
60 ... Adhesive tape.

Claims (10)

A display panel having a display area for displaying an image and a peripheral area provided around the display area;
A frame having a frame-shaped main body, and a panel holding portion that is provided so as to protrude from the main body to the inside of the frame and holds the peripheral area of the display panel from the rear side;
A light guide plate arranged to overlap the display panel inside the frame, and a display device comprising:
The light guide plate has a main portion that overlaps the display area of the display panel, and a protrusion that is integrally provided on the periphery of the main portion in a shape protruding toward the outside of the main portion,
Between the main body portion of the frame and the main portion of the light guide plate, a protruding portion arrangement region where the protruding portion is arranged is interposed so as to surround the main portion of the light guide plate over the entire circumference. And
The projecting portion arrangement region has the same width as the length of the projecting portion projecting outward from the main portion of the light guide plate, and the side of the main portion of the light guide plate where the projecting portion is formed. Has the entire length,
The display device is characterized in that the display panel is held by the panel holding portion in the protruding portion arrangement region.   The main part of the light guide plate includes a display area light emitting unit that irradiates illumination light to the display area of the display panel, and a periphery of the display area light emitting unit in order to uniformize illumination light around the display area light emitting unit. Display area light emitting peripheral portion provided in the display area, and the protruding portion is integrally provided at the periphery of the display area light emitting peripheral portion so as to protrude outward from the display area light emitting peripheral portion. The display device according to claim 1. The protrusion is disposed over the entire width of the protrusion disposition region such that one of the side surfaces of the protrusion of the light guide plate faces the inner surface of the main body of the frame.
The panel holding portion is disposed over the entire width of the protruding portion arrangement region so that one of the side surfaces of the panel holding portion faces the outer side surface of the main portion of the light guide plate. Item 3. The display device according to Item 1 or 2.   The said light guide plate is formed by injection molding of transparent resin, and the said protrusion part is an eject pin contact part which the eject pin at the time of the said injection molding contact | abuts, The Claim 1 characterized by the above-mentioned. Display device.   The display device according to claim 1, wherein the display panel and the frame have a rectangular planar shape.   The display device according to claim 1, wherein the panel holding portion and the protruding portion are adjacent to each other.   A plurality of the panel holding portions are provided on at least one side of the main body portion of the frame, and the protruding portion is disposed between two adjacent panel holding portions among the plurality of panel holding portions. The display device according to claim 1, wherein the display device is a display device.   The first predetermined region on the side surface of the protruding portion and the second predetermined region facing the first predetermined region of the protruding portion among the side surfaces of the panel holding portion are parallel to each other. The display device according to claim 6 or 7.   The display device according to claim 1, wherein a planar shape of the protruding portion is any one of a rectangular shape, a triangular shape, an arc shape, and a corrugated shape.   The display device according to claim 1, wherein the planar shape of the panel holding portion is any one of a rectangular shape, a triangular shape, an arc shape, and a corrugated shape.

Images