TWI553377B - Display device, electronic apparatus and lighting device - Google Patents

Description

Display device, electronic device and lighting device

The present invention relates to a display device including a lighting device and a display panel, an electronic device including the display device, and the lighting device.

In various display devices, the liquid crystal device includes an illumination device called a backlight device, and a transmissive or semi-transmissive display panel (liquid crystal panel) that is disposed on the light-emitting surface side of the illumination device, and is guided by the illumination device. A plurality of light-emitting elements are provided on the side end surface of the side end surface of the light plate which is a light incident portion (see Patent Document 1).

In the illumination device of this configuration, in many cases, when the light-emitting element is disposed on the light guide plate, for example, as shown in FIGS. 10(a) and 10(b), the light source substrate 88 is mounted on one surface 881 side. A plurality of light-emitting elements 89 are fixed, and the light source substrate 88 is fixed to the light source supporting member 60 made of metal by screws 86. At this time, in the patent document 1, the screw 86 is fixed from the side of the light source supporting member 60. However, it is necessary to fix the screw 86 from the one surface 881 side of the light source substrate 88 in terms of the restriction of the surrounding space and the ease of operation.

On the other hand, there has been proposed a local dimming technique in which a plurality of light-emitting elements 89 are grouped, and the intensity of the emitted light is controlled for each group, thereby controlling the intensity of the emitted light from the illumination device for each region, according to which Technology that improves contrast and improves dynamic performance.

[Previous Technical Literature] [Patent Literature]

[Patent Document 1] Japanese Patent Laid-Open Publication No. 2009-3081

However, as shown in FIGS. 10(a) and (b), when the screw 86 is fixed to the surface 881 of the light source substrate 88, the surface of the portion where the screw 86 is disposed in the longitudinal direction of the light source substrate 88 is provided. The status is different from its sides. As a result, there is a problem that illumination light is uneven in brightness and image quality is remarkably lowered. In particular, in the longitudinal direction of the light source substrate 88, the light-emitting elements 89 are grouped into a plurality of groups G (groups Ga, Gb, Gc, ...), and when the light intensity is controlled for each group G, in the group G, The surface (structural shape, unevenness, step, surface roughness, color, material) state and the surface state of other portions are different depending on the screw 86, so the scattering state and the reflection state of the light cause discontinuity or inhomogeneity, and thus The amount of light acquired by the light incident surface of the light guide plate is distributed (uneven), and as a result, there is a problem that the uniformity of brightness cannot be obtained as a planar (plate-shaped) illumination device, and the image quality is remarkably lowered.

The above problem occurs in the same manner as in the case where the portion where the screw 86 is provided is the concave portion 886 and the screw head does not protrude from the one surface 881 side of the light source substrate 88. In addition, a structure in which the light source substrate 88 is held by the hook or a structure in which the convex portion of the light source supporting member 60 is fitted into the hole provided in the light source substrate 88 is used instead of the screw 86, but only a hook or The above problem is also caused when the positioning structure such as the convex portion is exposed on the surface side of one of the light source substrates.

In view of the above problems, an object of the present invention is to provide a structure for positioning a positioning substrate on which a plurality of light-emitting elements are mounted on one surface side is exposed on one surface side of a light source substrate. A display device in which the deterioration of display quality due to the positioning structure is not conspicuous, an electronic device including the display device, and an illumination device.

In order to solve the above problems, the present invention provides a display device including a illuminating device and a display panel that is disposed on a light emitting surface side of the illuminating device, wherein the illuminating device includes a light guide plate that is disposed to overlap with each other. The display panel; the plurality of light-emitting elements having the light-emitting surface facing the side end surface of the light incident portion toward the side end surface of the light guide plate, and being arranged from one end side toward the other end side of the light incident portion, and facing from the one end side The other end side is divided into a plurality of groups; the light source driving unit controls the amount of light emission for each of the groups in conjunction with driving of the display panel; and the light source substrate is mounted on the one surface side (first surface) a light-emitting element; a light source supporting member disposed on the other surface side (second surface) of the light source substrate; and a positioning structure provided between adjacent groups of the plurality of groups, and at least a part The light source substrate is positioned on the light source supporting member in a state in which one surface side of the light source substrate is exposed.

In the illuminating device, a plurality of light-emitting elements are mounted on one surface of the light source substrate, and the light source substrate is supported by the light source supporting member on the other surface side by the positioning structure. Further, a plurality of light-emitting elements are divided into a plurality of groups, and the light source driving unit switches the amount of light emission for each group in conjunction with driving of the display panel, thereby controlling the intensity of the emitted light from the illumination device for each area. Here, since at least a part of the positioning structure is exposed on one surface side of the light source substrate, the surface state of one surface of the light source substrate is different from the other regions in the surface where the positioning structure is located. The positioning structure is disposed between adjacent groups. Therefore, even if the intensity of the emitted light of the illumination light is not continuous with the surrounding portion due to the structure for positioning, since the discontinuous portion is located between the regions where the intensity of the emitted light from the illumination device is controlled, it is not obvious. Therefore, even if the intensity of the emitted light of the illumination light is discontinuous due to the structure for positioning, the deterioration of the display quality due to the discontinuity is not remarkable.

In the present invention, the positioning structure may be configured by, for example, a screw that is fixed to the one surface side of the light source substrate. According to this configuration, it is possible to fix the substrate other than the light source.

In the above aspect of the invention, it is preferable that the light-emitting elements are disposed at equal intervals from the one end side toward the other end side. According to this configuration, when the light source light emitted from the light-emitting elements belonging to the same group is emitted as illumination light, the light intensity distribution in the illumination light is uniform.

In the present invention, the plurality of light-emitting elements may be configured to be equally spaced from the one end side toward the other end side.

In the present invention, the interval between the light-emitting elements in the group may be different from the interval between the light-emitting elements adjacent to each other in the plurality of groups and adjacent to each other.

In the invention, it is preferable that the light source substrate integrally extends from the one end side toward the other end side. According to this configuration, assembly of the lighting device or the like is easy. Further, the light source substrate of the present invention may be configured to be divided between adjacent groups among the plurality of groups.

The display device of the present invention is used in an electronic device such as a liquid crystal television.

The lighting device of the present invention is characterized by comprising: a light guide plate; a plurality of hair The light element is arranged such that the light-emitting surface faces the side end surface of the light incident portion toward the light incident surface, and is arranged from one end side toward the other end side of the light incident portion, and is divided from the one end side toward the other end side. a plurality of groups; a light source driving unit that controls the amount of light emitted for each of the groups; a light source substrate having the plurality of light emitting elements mounted on one surface side; and a light source supporting member superposed on the other surface side of the light source substrate; And the positioning structure is disposed between the adjacent groups of the plurality of groups, and the light source substrate is positioned on the light source supporting member in a state in which at least a part of the light source substrate is exposed.

In the present invention, a plurality of light-emitting elements are mounted on one surface of the light source substrate, and the light source substrate is supported by the light source supporting member on the other surface side by the positioning structure. Further, a plurality of light-emitting elements are divided into a plurality of groups, and the light source driving unit switches the amount of light emission for each group, thereby controlling the intensity of the emitted light from the illumination device for each region. Here, since at least a part of the positioning structure is exposed on one surface side, the surface state of one surface of the light source substrate is different from the other regions in which the positioning structure is located, and the positioning structure is placed in the adjacent group. between. Therefore, even if the intensity of the emitted light of the illumination light is not continuous with the surrounding portion due to the structure for positioning, since the discontinuous portion is located between the regions where the intensity of the emitted light from the illumination device is controlled, it is not obvious.

The form in which the present invention is applied to a display device for a liquid crystal television will be described with reference to the drawings. In addition, in the drawings referred to in the following description, each layer and each member are set to a degree that can be recognized in the drawing, so that each layer and The reduction ratio of each component is different. In the following description, the same reference numerals will be given to the corresponding parts, so that the correspondence relationship with the configuration described with reference to FIG. 10 can be easily understood. In the following description, the direction in which the light guide plate and the liquid crystal panel intersect each other in the in-plane direction (the direction in which the long sides of the light guide plate and the liquid crystal panel are extended) is defined as the X-axis direction, and The other direction (the direction in which the short side of the light guide plate and the liquid crystal panel extends) is set to the Y-axis direction, and the direction intersecting the X-axis direction and the Y-axis direction (direction/thickness of the light guide plate and the liquid crystal panel laminate) Direction) is set to the Z-axis direction. In the drawings referred to below, one side in the X-axis direction is indicated as the X1 side, and the other side is shown as the X2 side, and one side in the Y-axis direction (the direction in which the liquid crystal panel is disposed with the protruding portion) It is indicated as the Y1 side, and the other side opposite thereto is indicated as the Y2 side, and one side of the Z-axis direction (the direction toward the back surface of the light guide plate) is indicated as the Z1 side (lower side), and the other side thereof is opposed The side (the side from which the illumination light or the display light is emitted) is indicated as the Z2 side (upper side).

[Embodiment 1]

(overall)

1 is an explanatory view of a liquid crystal television (electronic device) including a display device according to Embodiment 1 of the present invention, and FIGS. 1(a) and 1(b) are diagrams schematically showing an appearance of a liquid crystal television, and a display device. A block diagram of electrical composition.

The electronic device 2000 shown in FIG. 1(a) is a liquid crystal television, and the display device 100 used in the liquid crystal television includes a transmissive display panel 10 as a display panel. As shown in FIG. 1(b), the display device 100 includes an image signal supply unit that supplies an image signal to the display panel 10 via a flexible circuit board, in addition to the display panel 10 described below with reference to FIG. 270, and heavy The illumination device 8 is disposed on the back side of the display panel 10 and supplies illumination light. Further, the display device 100 includes a scanning line driving circuit 104 that drives a scanning line extending in the X-axis direction on the display panel 10, and a data line driving circuit 101 that drives the data on the display panel 10 extending in the Y-axis direction. line. Both of the scanning line driving circuit 104 and the data line driving circuit 101 can be configured to be built in the display panel 10. Further, a configuration may be adopted in which one of the scanning line driving circuit 104 and the data line driving circuit 101 is built in the display panel 10, and the other is built in a COG (Chip On Glass) mounted on the display panel 10. A driving IC (integrated circuit) or a driving IC mounted on the circuit board 250 electrically connected to the display panel 10. Further, both of the scanning line driving circuit 104 and the data line driving circuit 101 may be incorporated in a configuration of a driving IC that is different from the display panel 10.

In the present embodiment, the illumination device 8 includes a light guide plate 80 that is disposed to overlap the display panel 10, and a plurality of light-emitting elements 89 disposed along the side end surface of the light-incident end surface of the light-guide plate 80 that serves as the light-incident portion 80a. The substrate 88 is provided with a plurality of light-emitting elements 89; the light-emitting surfaces of the plurality of light-emitting elements 89 oppose the light incident portion 80a of the light guide plate 80.

In the display device 100, by controlling the intensity of the emitted light from the illumination device 8 for each region in accordance with the driving of the display panel 10, the contrast can be improved and the dynamic performance can be improved. For example, the brightness of the image of each of the areas 10a to 10p displayed on the display panel 10 is detected, and according to the degree of the brightness, illumination light having a large illumination intensity is emitted from the illumination device 8 in the bright display area (higher brightness) Illumination light) in dark display area The field emits illumination light having a small luminous intensity (illumination light having a low luminance) from the illumination device 8. According to the adjustment mode of the area, the contrast can be improved and the dynamic performance can be improved, thereby achieving low power consumption.

Therefore, in the display device 100 of the present embodiment, the plurality of light-emitting elements 89 are divided into a plurality of groups corresponding to the plurality of regions 10a to 10p of the display panel 10 as described below. Further, the display device 100 includes a luminance distribution detecting unit 290 that detects the luminance of an image of each of the regions 10a to 10h of the display panel 10, and a light source driving unit 280 that is based on the detection result by the luminance distribution detecting unit 290. The intensity of the outgoing light from the plurality of light-emitting elements 89 is controlled for each group; and the light source driving unit 280 supplies the same driving current to the light-emitting elements 89 belonging to the same group. The luminance distribution detecting unit 290 is configured as the same control IC 260 as the image signal supply unit 270, for example.

(Specific configuration of display device 100)

2 is an explanatory view showing an overall configuration of a display device 100 according to Embodiment 1 of the present invention. FIG. 2(a) is a perspective view of the display device 100, and FIG. 2(b) is an exploded perspective view. Fig. 3 is an exploded perspective view showing the display device 100 according to the first embodiment of the present invention in further detail. Fig. 4 is a cross-sectional view showing the main part of a display device 100 according to the first embodiment of the present invention.

2, 3, and 4, the display device 100 of the present embodiment generally includes an illumination device 8 called a so-called backlight device, and a transmissive display panel 10 which is superposed on the upper surface of the illumination device 8. Transmissive LCD panel. Further, the display device 100 includes a resin resin frame 30 that holds the display panel 10 and the illumination device 8 on the inside, and a metal that is disposed on the lower side of the resin frame 30 (the side opposite to the display surface/the side Z1 of the Z-axis direction). Sexual box The lower frame 40 and the metallic frame-shaped upper frame 50 disposed on the upper side of the resin frame 30 (the side of the display surface/the other side Z2 in the Z-axis direction).

The resin frame 30 has a rectangular frame shape surrounding the periphery of the display panel 10, and can positionably support an end portion of the outer peripheral portion of the display panel. Further, in the present embodiment, the resin frame 30 is composed of four frame plates 31 to 34 which are divided for each of the four sides of the display panel 10. In the present embodiment, the resin frame 30 is black and functions as a light absorbing member, thereby preventing stray light from being generated in the illuminating device 8. Each of the frame plates 31 to 34 includes side plate portions 311, 321, 331 and 341 which extend downward (in the thickness and height direction) on the outer surface side of the frame plates 31 to 34, and from the middle of the height direction of the frame plates 31 to 34. Projecting plate portions 312, 322, 332, and 342 projecting inward from the inner faces of the frame plates 31 to 34. Therefore, on the inner side of the frame plates 31 to 34, step portions 313, 323, 333, and 343 are formed by the protruding plate portions 312, 322, 332, and 342, and the step portions 313, 323, 333, and 343 and the protruding plate portion 312 are formed. The 322, 332, and 342 hold the display panel 10 and are positioned by the positioning acceptance range of the step. Further, a light guide plate 80, a light-emitting element 89, and the like of the illumination device 8 are disposed below the protruding plate portion 312.

The lower frame 40 is formed by pressing a thin metal plate such as a SUS plate or the like. The lower frame 40 includes a bottom plate portion 45 and four side plate portions 41 to 44 rising from the outer periphery of the bottom plate portion 45, thereby forming a rectangular box shape having an open upper surface. The side plate portions 311 to 341 of the resin frame 30 are overlapped on the outer sides of the side plate portions 41 to 44 of the lower frame 40.

Similarly to the lower frame 40, the upper frame 50 is formed by pressing a thin metal plate such as a SUS plate. The upper frame 50 is configured to include a flat frame (a flat frame shape) upper plate portion 55 and four side plate portions 51 to 54 which are bent downward from the outer periphery of the upper plate portion 55 (in the thickness direction of the display device), and the upper plate portion (upper surface) corresponds to the display panel The display area (10a to 10p) of 10 is opened, and the lower side is opened wider by the side plate portion. The side plate portions 51 to 54 are overlapped on the outer sides of the side plate portions 311, 321, 331 and 341 of the resin frame 30. A rectangular opening portion 550 through which light emitted from the display panel 10 is emitted is formed in the upper plate portion 55, and the upper plate portion 55 is covered over the entire outer peripheral end portion of the display light emission side of the display panel 10.

In this way, the upper frame 50, the resin frame 30, and the lower frame 40 are connected by bolts (not shown) or the like, and the display panel 10 and the illumination device 8 are held inside. Here, the flexible sheets 71 and 72 containing a material having a larger friction coefficient than the resin frame 30 are adhered to the lower surface and the upper surface of the protruding portions 312, 322, 332, and 342 of the resin frame 30. Therefore, when the display device 100 is assembled, the display panel 10 is supported by the protruding portions 312, 322, 332, and 342 via the flexible sheet 72, and is abutted and fixed, so that it is difficult to cause positional displacement. Further, when the display device 100 is assembled, the optical sheets (the diffusion sheet 182, the cymbals 183, 184, and the like) of the illumination device 8 are supported via the flexible sheet 71, and are abutted and fixed, so that it is difficult to cause positional displacement.

(Configuration of display panel 10)

As shown in FIG. 2, FIG. 3, and FIG. 4, the display panel 10 has a quadrangular planar shape and includes an element substrate 11 on which a pixel electrode (not shown) or the like is formed, and is opposed to the element substrate 11 by a specific gap. The counter substrate 12 and the sealing material 14 that bonds the counter substrate 12 to the element substrate 11 are disposed. A liquid crystal layer is held in a region of the display panel 10 surrounded by the sealing material 14 13. The element substrate 11 and the counter substrate 12 include a light-transmissive substrate such as a glass substrate. On the element substrate 11, a plurality of scanning lines (not shown) extend in the X-axis direction, and on the other hand, a plurality of data lines extend in the Y-axis direction, corresponding to the scanning lines and the data lines (not shown). A switching element (not shown) and a pixel electrode are provided to intersect each other.

In the present embodiment, the counter substrate 12 is disposed on the emission side of the display light, and the element substrate 11 is disposed on the illumination device 8 side. Further, on the surface of the counter substrate 12 facing the element substrate 11, a bezel layer (not shown) including a light shielding layer is formed along the inner edge of the sealing material 14. The display panel 10 is configured as a TN (Twisted Nematic), ECB (Electrically Controlled Birefringence) or VAN (Vertical Aligned Nematic) liquid crystal panel, and the element substrate 11 is configured. A pixel electrode is formed in the middle, and a common electrode (not shown) is formed in the counter substrate 12. In the case where the display panel 10 is an IPS (In Plane Switching) or FFS (Fringe Field Switching) liquid crystal panel, the common electrode is provided on the element substrate 11 side. Further, there is a case where the element substrate 11 is disposed on the exit side of the display light with respect to the opposite substrate 12. The upper polarizing plate 18 is disposed on the upper surface of the display panel 10, and a lower polarizing plate 17 is disposed between the lower surface of the display panel 10 and the illumination device 8.

In the present embodiment, the element substrate 11 is larger than the counter substrate 12. Therefore, the element substrate 11 has a protruding portion 110 protruding from one end portion of the opposite substrate 12 in the Y-axis direction, and the flexible circuit board 200 is connected to the upper surface of the protruding portion 110. The flexible circuit board 200 has a plurality of flexible circuit boards connected thereto The structure is formed and connected to a circuit board 250 (PCB (Printed Circuit Board) substrate). Therefore, the control IC 260 constituting the image signal supply unit 270 and the light source driving IC (not shown) constituting the light source driving unit 280 described with reference to FIG. 1 are mounted on the circuit board 250 or the flexible circuit board 200. Further, the control IC constituting the image signal supply unit 270 may be mounted on the upper surface of the protruding portion 110 of the display panel 10 as well.

(Composition of lighting device 8)

5 is an explanatory view of a light-emitting element 89, a light source substrate 88, and the like used in the illumination device 8 of the display device 100 according to the first embodiment of the present invention, and FIGS. 5(a), (b), and (c) are light sources. A perspective view when the light-emitting element 89 or the like is observed on one surface of the substrate 88 (the surface on the side where the light-emitting element 89 is mounted), and a direction orthogonal to the direction in which the light source substrate 88 extends (long side of the rectangular shape) (short-side direction) (width direction) an explanatory diagram when the light-emitting element 89 and the like are observed, and an explanatory view showing a lighting state of the light-emitting element 89.

As shown in FIG. 3, FIG. 4 and FIG. 5, the illuminating device 8 includes a light guide plate 80 that is disposed on the lower surface side of the display panel 10 and a plurality of light-emitting elements 89 that face the light-emitting surface 89a toward the light guide plate 80. The light incident portion 80a is arranged from one end side (one side X1 in the X-axis direction) to the other end side (the other side X2 in the X-axis direction) from the light incident portion 80a. In other words, the plurality of light-emitting elements 89 are arranged in a direction in which the light-incident portion 80a of the light guide plate 80 extends in a direction opposite to the light-incident portion 80a. In the present embodiment, a plurality of light-emitting elements 89 are attached to one surface 881 of the light source substrate 88 extending in the X-axis direction along the light incident portion 80a. The light-emitting element 89 is an LED that emits white light as a light source (Light Emitting) Diode, light-emitting diode).

In the illuminating device 8 of the present embodiment, the two side end faces 801 and 803 facing the Y-axis direction of the side end faces 801, 802, 803, and 804 of the light guide plate 80 are used as the light incident portion 80a. Therefore, the plurality of light-emitting elements 89 are such that the light-emitting surface 89a faces the two light incident portions 80a (side end faces 801, 803) of the light guide plate 80, and each of the two light incident portions 80a (side end faces 801, 803) One end side is arranged in a row on the other end side. Further, the light source substrate 88 disposed corresponding to each of the two light incident portions 80a (the side end surfaces 801 and 803) is formed to extend in the direction in which the light incident portion 80a (the side end surfaces 801 and 803) extend. In a rectangular shape, a plurality of light-emitting elements 89 are mounted on one surface 881 of each of the light source substrates 88. A connector 87 is attached to one end of a surface 881 of the light source substrate 88 corresponding to a corner portion of the light guide plate 80 (corner portion of the display panel 10), and the connector 87 is used to supply a drive current to the light source substrate 88. To the light-emitting element 89.

In the present embodiment, the light guide plate 80 is made of a translucent resin sheet such as an acrylic resin or a polycarbonate resin, and a reflective sheet 187 is disposed between the lower surface 80c of the light guide plate 80 and the bottom plate portion 45 of the lower frame 40. An optical sheet such as a diffusion sheet 182 or a gusset 183 or 184 is disposed to overlap the upper surface (light emitting surface 80b) of the light guide plate 80 and the display panel 10. In the present embodiment, the two ridges 183 and 184 are arranged such that their ridge lines are orthogonal to each other. Therefore, the illumination light emitted from the light exit surface 80b of the light guide plate 80 is omnidirectionally diffused by the diffusion sheet 182, and is provided with illumination brightness in the front direction of the display panel 10 by the two dies 183 and 184. The directionality of the peak. Formed on the side of the light guide plate 80 on the side of the reflective sheet 187 by laser addition The recessed fine recess formed by the work or the scattering pattern of the printed layer including the scattering member, in the present embodiment, the density of the scattering pattern becomes higher as it moves away from the light-emitting element 89. Therefore, the intensity distribution (luminance distribution) of the illumination light emitted from the light guide plate 80 is uniform regardless of the distance from the light-emitting element 89. As the scattering pattern, in the present embodiment, a fine concave recess 80e is provided on the lower surface 80c of the light guide plate 80.

The bottom plate portion 45 of the lower frame 40 is partially formed with a step in a region overlapping the light guide plate 80 including a portion of the side end faces 801, 803 which become the light incident portion 80a to ensure the lower surface 80c of the light guide plate 80 and the lower frame 40. There is a gap between them and is curved toward the light guide plate 80. Thereby, the reflective sheet 187 and the lower plate portion 61 of the light source supporting member 60 can be sandwiched between the gaps between the lower surface 80c of the light guide plate 80 and the bottom plate portion 45. Further, by partially bending the bottom plate portion 45 of the lower frame 40 toward the light guide plate 80 to form a concave portion on the back side of the lower frame 40, the flexible circuit board 200 can be bent and extended below the bottom plate portion 45 of the lower frame 40. The surface (back surface) is disposed in the recess so that the circuit board 250 connected to the flexible circuit board 200 is housed in the depth of the recess. Therefore, the thinning of the illumination device 8 can be achieved.

In the present embodiment, the light source substrate 88 is disposed such that one surface 881 of the light-emitting element 89 is attached to the light incident portion 80a of the light guide plate 80. Further, the light source substrate 88 has a structure in which a wiring pattern, a contact, and an insulating layer are provided on one side of the surface 881 of the plate-shaped metal plate 887 extending along the light incident portion 80a. This configuration can be realized, for example, by bonding a flexible wiring board 888 in which a resin base layer, a wiring pattern, an insulating protective layer, and the like are sequentially laminated to one surface 881 of the metal plate 887. Therefore, it is possible to ensure that the wiring pattern and the mounting are made The contacts of the wafer of the optical element 89 are electrically insulated from the metal plate 887. In the present embodiment, the metal plate 887 includes an aluminum plate, and the metal plate 887 secures the mechanical strength of the light source substrate 88 and also functions as a heat radiating plate emitted from the light-emitting element 89.

Here, the light source supporting member 60 that holds the light source substrate 88 is disposed on the other surface 882 side of each of the light source substrates 88, and the light source supporting member 60 is disposed and held between the lower frame 40 and the resin frame 30. In the present embodiment, the light source supporting member 60 is a rod-shaped metal member extending along the other surface 882 of the light source substrate 88, and the entire surface of the other surface 882 of the light source substrate 88 is in close contact with the substrate holding surface 620 of the support plate portion 62. fixed. Further, the light source supporting member 60 includes a plate portion 61 that is overlapped with the bottom plate portion 45 of the lower frame 40, and a support plate portion 62 that constitutes a wall surface that protrudes upward from a central position in the width direction of the lower plate portion 61. Further, the light source supporting member 60 is disposed on the upper end side of the support plate portion 62 (the side opposite to the lower plate portion 61) from the upper support plate portion 62 bent toward the side opposite to the side on which the light guide plate 80 is located. The plate portion 63 is fixed to at least one of the upper plate 50 upper plate portion 55 and the resin frame 30 upper plate portion by screws or the like.

In the light source supporting member 60 of the configuration, the surface on which the light guide plate 80 of the support plate portion 62 is located is a substrate holding surface 620 that holds the light source substrate 88 in surface contact, and the light source substrate 88 is fixed by the following structure. The substrate holding surface 620 is provided.

(Fixed structure of substrate 88 for light source)

As shown in FIGS. 5(a) and 5(b), a plurality of light-emitting elements 89 are mounted on one surface 881 of the light source substrate 88 along the longitudinal direction of the light source substrate 88. In the shape In the state, a plurality of light-emitting elements 89 are all arranged at equal intervals. In the illuminating device 8 of this configuration, when a region adjustment is adopted, a plurality of light-emitting elements 89 are formed by a plurality of light-emitting elements arranged adjacent to each other in the longitudinal direction of the light source substrate 88 (groups Ga, Gb, Gc...) The unit group G is grouped, and the light source driving unit 280 described with reference to Fig. 1 controls the intensity of emitted light (light emission luminance) for each group G. Fig. 5(c) shows a case where the light-emitting elements 89 belonging to the groups Ga and Gc are turned on, and the light-emitting elements 89 belonging to the groups Gb and Gd are turned off. Further, in the present embodiment, since the plurality of light-emitting elements 89 are all arranged at equal intervals, the plurality of light-emitting elements 89 are arranged at equal intervals in the same group G. Therefore, when the light source light emitted from the light-emitting elements 89 belonging to the same group G is emitted as illumination light, the light intensity distribution (light-emitting luminance distribution) in the illumination light is uniform.

In the present embodiment, the light source substrate 88 is superposed on the other surface 882 in contact with the substrate holding surface 620 of the light source supporting member 60. In this state, the light source substrate 88 is made of metal as a positioning structure. The screw 86 is positioned and fixed to the light source supporting member 60. The light source supporting member 60 is made of metal such as aluminum or an iron-based metal, and the metal plate 887 of the light source substrate 88 is connected to the light source supporting member 60. Therefore, the heat generated by the light-emitting element 89 is transmitted from the metal plate 887 of the light source substrate 88 to the light source supporting member 60, and the heat of the light source supporting member 60 is transmitted to the lower frame 40 to dissipate heat. Therefore, the temperature rise of the light-emitting element 89 can be suppressed to be low.

Here, the screw 86 is fixed to the substrate holding surface 620 of the light source supporting member 60 from the one surface 881 side of the light source substrate 88, and is exposed to the surface 881 of the light source substrate 88 at the head of the screw 86. Also, the screw 86 is set Between adjacent groups G of a plurality of groups G (groups Ga, Gb, Gc, ...) of the light-emitting elements 89.

More specifically, in the light source substrate 88, a through hole 885 having a diameter slightly larger than the shaft portion of the screw 86 is formed between the adjacent groups G, and is formed at a position overlapping the through hole 885 in the light source supporting member 60. There are screw holes 625. In the present embodiment, the through hole 885 is located on the side of the one surface 881 of the light source substrate 88 and becomes a concave portion 886 having a diameter slightly larger than the head of the screw 86. Therefore, the head of the screw 86 is located inside the recess 886 and does not protrude from the face 881 of the substrate 88 for the light source. Furthermore, the screw 86 need not be disposed between all adjacent groups G. In the present embodiment, the screw 86 is disposed between the group Ga and the group Gb, and between the group Gb and the group Gc, but is not disposed. Mcd between group Gc and group Gd.

In addition, FIG. 5 shows a structure in which one side Y1 of the display device 100 in the Y-axis direction (the side on which the frame plate 31 of the resin frame 30 is located), but the other side Y2 of the Y-axis direction of the display device 100 (resin The side on which the frame plate 32 of the frame 30 is located) also has the same configuration.

(The main effect of this form)

As described above, in the illumination device 8 and the display device 100 of the present embodiment, a plurality of light-emitting elements 89 are mounted on one surface 881 of the light source substrate 88, and the light source substrate 88 is made of a metal screw 86 (positioning structure) And supporting the light source supporting member 60 on the other side 882 side. Further, the plurality of light-emitting elements 89 are divided into a plurality of groups G, and the light source driving unit 280 switches the amount of light emission for each group G in conjunction with the light and dark state of the area in which the image is displayed on the display panel 10, thereby controlling for each area. Illumination as a planar illumination device 8 The intensity of light emitted by light. Here, since at least a part (head portion) of the screw 86 is exposed on the one surface 881 side of the light source substrate 88, the surface state of the one surface 881 of the light source substrate 88 is different from the other regions in the surface portion of the screw 86, but the screw 86 Set between adjacent groups G. Therefore, even if the exit state (light scattering state and reflection state) of the illumination light is not continuous with the surroundings due to the screw 86, the discontinuous portion is also located in the intensity of the outgoing light of the illumination light from the illumination device 8 in the area adjustment ( The brightness of the light is controlled between the areas. Therefore, even if the intensity of the emitted light of the illumination light is discontinuous due to the screw 86, the deterioration of the display quality due to the discontinuity is not remarkable.

[Embodiment 2]

Fig. 6 is an explanatory view showing a light-emitting element 89, a light source substrate 88, and the like used in the illumination device 8 of the display device 100 according to the second embodiment of the present invention. In addition, since the basic configuration of this embodiment is the same as that of the first embodiment, the same reference numerals will be given to the same portions, and the description thereof will be omitted.

As shown in FIG. 6, in the same manner as in the first embodiment, a plurality of light-emitting elements 89 are attached to one surface 881 of the light source substrate 88 along the longitudinal direction of the light source substrate 88. Further, in the present embodiment, when the area adjustment is employed in the illumination device 8, as in the first embodiment, the plurality of light-emitting elements 89 are grouped into a plurality of groups G (group Ga, in the longitudinal direction of the light source substrate 88). Gb, Gc, ...), the light source driving unit 280 described with reference to Fig. 1 controls the intensity of the emitted light for each group G.

Here, in the first embodiment, all of the light-emitting elements 89 are arranged at equal intervals. However, in the present embodiment, the light-emitting elements 89 are arranged at equal intervals in the group G, However, the interval between the adjacent groups G and the adjacent light-emitting elements 89 is set to be different from the interval between the light-emitting elements 89 belonging to the same group G and adjacent to each other. In the present embodiment, the adjacent groups G and the adjacent light-emitting elements 89 are spaced apart from each other by the same group G and the adjacent light-emitting elements 89 are spaced apart from each other.

In the illuminating device 8 configured in this manner, when the light source substrate 88 is fixed to the light source supporting member 60 by the screw 86, the screw 86 is fixed from the side 881 side of the light source substrate 88, and is at the head of the screw 86. The inside of the concave portion 886 of the one surface 881 of the light source substrate 88 is exposed. Here, the screw 86 is disposed between the adjacent groups G of the plurality of groups G (groups Ga, Gb, Gc, ...) of the light-emitting elements 89. More specifically, screws 86 are provided between Mab and Mbc between adjacent groups G in the light source substrate 88. Therefore, a part of the light emitted from the adjacent light-emitting element 89 is also reflected by the surface (metal surface) of the screw 86 disposed at a wide interval (substantially central portion), and thus can be assumed to be wider. In the interval, a state in which a light source of a small brightness (a light source having a small light-emitting intensity) is disposed can also compensate for the discontinuity. Further, in the same manner as in the first embodiment, even if the intensity of the outgoing light of the illumination light and the surrounding portion are not generated by the screw 86, the discontinuous portion is located in the area adjustment, and the intensity of the emitted light from the illumination device 8 is controlled. Between the regions. Therefore, even if the intensity of the emitted light of the illumination light is discontinuous due to the screw 86, the deterioration of the display quality due to the discontinuity is not remarkable.

[Embodiment 3]

Fig. 7 is an explanatory view showing a light-emitting element 89, a light source substrate 88, and the like used in the illumination device 8 of the display device 100 according to the third embodiment of the present invention. Furthermore, Since the basic configuration of the present embodiment is the same as that of the first and second embodiments, the same reference numerals will be given to the same portions, and the description thereof will be omitted.

As shown in FIG. 7, in the same manner as in the first and second embodiments, a plurality of light-emitting elements 89 are attached to one surface 881 of the light source substrate 88 along the longitudinal direction of the light source substrate 88. Further, in the present embodiment, when the area adjustment is employed in the illumination device 8, as in the first embodiment, the plurality of light-emitting elements 89 are grouped into a plurality of groups G (group Ga, in the longitudinal direction of the light source substrate 88). Gb, Gc...) The light source driving unit 280 described with reference to Fig. 1 controls the intensity of emitted light (light emission luminance) for each group G. Here, in the same manner as in the second embodiment, the adjacent different groups G and the adjacent light-emitting elements 89 are spaced apart from each other by the same group G and the adjacent light-emitting elements 89 are spaced apart from each other.

Here, the light source substrate 88 is integrally extended in the longitudinal direction in the first and second embodiments. However, in the present embodiment, the light source substrate 88 is divided between the adjacent groups G and Mbc. In other words, in a large television or a monitor, a plurality of light source substrates 88 are disposed along the light incident portion 80a of the light guide plate 80 in the X-axis direction in the longitudinal direction. In this case, the light source substrate 88 and the light source substrate 88 adjacent thereto are located between the unit group G and the unit group G in which the light emission is controlled. In this configuration, in the present embodiment, when the light source substrate 88 is fixed to the light source supporting member 60 by the screw 86, the screw 86 is also fixed from the one surface 881 side of the light source substrate 88, and is at the head of the screw 86. The inside of the concave portion 886 of the one surface 881 of the light source substrate 88 is exposed. Further, the screw 86 is disposed between the adjacent groups G of the plurality of groups G (groups Ga, Gb, Gc, ...) of the light-emitting elements 89. More specifically, in the light source substrate 88, the Mab and Mbc are provided with screws between adjacent groups G. 86. Therefore, a part of the light emitted from the adjacent light-emitting elements is also reflected by the surface (metal surface) of the two screws 86 disposed adjacent to the end portions of the adjacent light source substrate 88, and thus It is assumed that a light source having two small luminances (a light source having a small light-emitting intensity) is disposed at a position corresponding to the adjacent light source substrate 88 in a wide interval, and the discontinuity can be compensated for. Further, in the same manner as in the first embodiment, even if the intensity of the outgoing light of the illumination light and the surrounding portion are not generated by the screw 86, the discontinuous portion is located in the area adjustment, and the intensity of the emitted light from the illumination device 8 is controlled. Between the regions. Therefore, even if the intensity of the emitted light of the illumination light is discontinuous due to the screw 86, the deterioration of the display quality due to the discontinuity is not remarkable.

Further, in the present embodiment, the light source substrate 88 is divided, but the division position is Mbc between the adjacent groups G. Therefore, even if the intensity of the emitted light of the illumination light is discontinuous with the surrounding portion due to the divided portion of the substrate 88 for the light source, the discontinuous portion is located in the region where the intensity of the emitted light from the illumination device 8 is controlled in the area adjustment. between. Therefore, even if the intensity of the emitted light of the illumination light is discontinuous due to the divided portion of the substrate 88 for the light source, the deterioration of the display quality due to the discontinuity is not remarkable.

[Embodiment 4]

Fig. 8 is an explanatory view showing a light-emitting element 89, a light source substrate 88, and the like used in the illumination device 8 of the display device 100 according to the fourth embodiment of the present invention. In addition, since the basic configuration of this embodiment is the same as that of the first to third embodiments, the same reference numerals will be given to the same portions, and the description thereof will be omitted.

As shown in Fig. 8, in this embodiment, it is the same as in the first to third embodiments, and is in the light. A plurality of light-emitting elements 89 are mounted along the longitudinal direction of the light source substrate 88 on one surface 881 of the source substrate 88. Further, in the present embodiment, when the area adjustment is employed in the illumination device 8, as in the first embodiment, a plurality of light-emitting elements 89 are grouped into a plurality of groups G (groups Ga, Gb) in the longitudinal direction of the light source substrate 88. Gc...) The light source driving unit 280 described with reference to Fig. 1 controls the intensity of emitted light (light emission luminance) for each group G.

In the fourth embodiment, as in the second and third embodiments, the light-emitting elements 89 in the group G are arranged at equal intervals, but the adjacent groups G and the adjacent light-emitting elements 89 are spaced apart from each other to belong to the same group G. The adjacent light-emitting elements 89 are spaced apart from each other by a different interval. In the present embodiment, the adjacent groups G and the adjacent light-emitting elements 89 are spaced apart from each other by the same group G and the adjacent light-emitting elements 89 are spaced apart from each other.

Further, in the light source substrate 88, a space for providing the screws 86 is provided between the end portion of the light source substrate 88 and the group Ga. This interval is referred to as Mae between the end portion and the group Ga.

In the illuminating device 8 configured in this manner, when the light source substrate 88 is fixed to the light source supporting member 60 by the screw 86, the screw 86 is fixed from the side 881 side of the light source substrate 88 and is at the head of the screw 86. The inside of the concave portion 886 of the one surface 881 of the light source substrate 88 is exposed.

Further, the screw 86 of the present embodiment is disposed in every other group G in a plurality of groups G. Specifically, for example, a screw 86 is disposed between the end portion of the light source substrate 88 and the group Ga, and between the group Gb and the group Gc. That is, the screw 86 is not disposed between the group Ga and the group Gb.

Thus, as in the first embodiment, even illumination light is generated by the screw 86. The portion of the emitted light having a discontinuous (non-uniform) intensity is also located between the regions (groups) in which the intensity of the outgoing light from the illumination device 8 is controlled in the area adjustment. Therefore, even if the intensity of the emitted light of the illumination light is discontinuous due to the screw 86, the deterioration of the display quality due to the discontinuity is not remarkable.

Further, since a part of the light emitted from the adjacent light-emitting elements 89 is also partially reflected by the surface (metal surface) of the screw 86 arranged at regular intervals, it is also possible to assume a wide interval. The state in which a light source having a small brightness (a light source having a small luminous intensity) is disposed can also compensate for the discontinuity.

[Embodiment 5]

Fig. 9 is a cross-sectional view showing the main part of a display device 100 according to a fourth embodiment of the present invention. In addition, since the basic configuration of this embodiment is the same as that of the first and second embodiments, the same reference numerals will be given to the same portions, and the description thereof will be omitted.

In the above-described first to fourth embodiments, one surface 881 of the light-emitting element 89 is mounted on the light source substrate 88, and the light incident portion 80a of the light guide plate 80 is opposed to each other. However, in the present embodiment, as shown in FIG. One surface 881 of the light-emitting element 89 is mounted on the substrate 88 in a direction crossing an angle of 90° with the light incident portion 80a of the light guide plate 80. However, the light-emitting element 89 has the light-emitting surface 89a oriented in a direction parallel to the one surface 881 of the light source substrate 88. Therefore, the light-emitting element 89 can cause the light source light to enter the inside of the light guide plate 80 from the light incident portion 80a. Further, in the present embodiment, in the light source supporting member 60, the substrate holding surface 620 is formed on the lower plate portion 61 and at an angle of 90° to the light incident portion 80a of the light guide plate 80. The direction of the cross. Further, in the light source supporting member 60, the vertical plate portion 68 standing upright from the lower plate portion 61 faces the light incident portion 80a of the light guide plate 80.

In the illuminating device 8 of this configuration, as in the first embodiment, when the light source substrate 88 is fixed to the light source supporting member 60 by the screw 86, the screw 86 is formed between the adjacent groups G from the light source substrate 88. 881 locks. Therefore, in the same manner as in the first embodiment, even if the intensity of the outgoing light of the illumination light and the surrounding portion are discontinuous due to the screw 86, the discontinuous portion is located in the area adjustment, and the intensity of the emitted light from the illumination device 8 is controlled. Between the regions. Therefore, even if the intensity of the emitted light of the illumination light is discontinuous due to the screw 86, the deterioration of the display quality due to the discontinuity is not remarkable.

[Other Embodiments]

In the above, the screw 86 is used as the positioning structure for positioning the light source substrate 88 on the light source supporting member 60. However, the structure for holding the light source substrate 88 by the hook (positioning structure) or the light source supporting member 60 is used. The present invention can also be applied to a case where the convex portion (structure for positioning) is fitted into the hole provided in the light source substrate 88 to maintain the structure of the light source substrate 88.

In the above embodiment, a plurality of light-emitting elements 89 are arranged in the extending direction (X-axis direction) of the scanning line, but a plurality of light-emitting elements 89 are arranged in the extending direction (Y-axis direction) of the data line. The present invention can also be applied to the arranged display device 100. In the case of this configuration, the area adjustment can be employed, and the scanning backlight mode in which the illumination light is emitted from the illumination device 8 can also be employed in accordance with the action of generating the offset corresponding to the pixel row selected by the scanning signal.

[Other Embodiments]

In the fourth embodiment, the screws 86 are disposed every two groups G. However, the present invention is not limited thereto. For example, the screws 86 may be disposed every three groups G.

As described above, in the same manner as in the first embodiment, even if the position where the intensity of the emitted light of the illumination light is not continuous (uneven) is generated by the screw 86, the discontinuous portion is located in the light emitted from the illumination device 8 in the area adjustment. Between the areas where the intensity is controlled (group units). Therefore, even if the intensity of the emitted light of the illumination light is discontinuous due to the screw 86, the deterioration of the display quality due to the discontinuity is not remarkable.

Further, since a part of the light emitted from the adjacent light-emitting elements 89 is also partially reflected by the surface (metal surface) of the screw 86 arranged at regular intervals, it is also possible to assume a wide interval. The state in which a light source having a small brightness (a light source having a small luminous intensity) is disposed can also compensate for the discontinuity.

[Example of mounting on electronic equipment]

In the above-described embodiment, the electronic device 2000 on which the display device 100 is mounted is exemplified by a liquid crystal television. In addition to the liquid crystal television, it can also be used in a personal computer display, an electronic signage, a car navigation device, a portable information terminal, and the like. The display device 100 to which the present invention is applied is used in the display portion of the machine.

8‧‧‧Lighting device

10‧‧‧ display panel

60‧‧‧Light source support member

61‧‧‧ Lower Board

62‧‧‧Support Board

80‧‧‧Light guide plate

80a‧‧‧Light incident section

80b‧‧‧Light exit surface

86‧‧‧screws (structures for positioning)

88‧‧‧Source substrate for light source

89‧‧‧Lighting elements (light source)

89a‧‧‧Lighting surface

100‧‧‧ display device

280‧‧‧Light source drive department

625‧‧‧ screw holes

881‧‧‧One side of the substrate for the light source (first side)

882‧‧‧The other side of the substrate for light source (second side)

885‧‧‧through holes

886‧‧‧ recess

887‧‧‧Metal sheet

888‧‧‧Flexible circuit board

Group G‧‧‧

Ga‧‧‧ group

Group Gb‧‧

Group Gc‧‧

Group Gd‧‧

Between the Mab‧‧ group Ga and the group Gb

Between the Mbc‧‧‧ group Gb and the group Gc

Between the Mcd‧‧ group Gc and the group Gd

Fig. 1 (a) and (b) are explanatory views of a liquid crystal television (electronic device) including a display device according to a first embodiment of the present invention.

2(a) and 2(b) are explanatory views showing the overall configuration of a display device according to Embodiment 1 of the present invention.

Fig. 3 is an exploded perspective view showing the display device according to the first embodiment of the present invention in further detail.

Fig. 4 is a cross-sectional view showing the main part of a display device according to a first embodiment of the present invention.

5(a) to 5(c) are explanatory views of a light-emitting element, a light source substrate, and the like used in the illumination device of the display device according to the first embodiment of the present invention.

Fig. 6 is an explanatory view showing a light-emitting element, a light source substrate, and the like used in the illumination device of the display device according to the second embodiment of the present invention.

Fig. 7 is an explanatory view showing a light-emitting element, a light source substrate, and the like used in the illumination device of the display device according to the third embodiment of the present invention.

Fig. 8 is an explanatory view showing a light-emitting element, a light source substrate, and the like used in the illumination device of the display device according to the fourth embodiment of the present invention.

Figure 9 is a cross-sectional view showing the main part of a display device according to a fifth embodiment of the present invention.

10(a) and (b) are explanatory views of the prior lighting device.

8‧‧‧Lighting device

60‧‧‧Light source support member

61‧‧‧ Lower Board

62‧‧‧Support Board

86‧‧‧screws (structures for positioning)

88‧‧‧Source substrate for light source

89‧‧‧Lighting elements (light source)

89a‧‧‧Lighting surface

625‧‧‧ screw holes

881‧‧‧One side of the substrate for light source

882‧‧‧The other side of the substrate for light source

885‧‧‧through holes

886‧‧‧ recess

887‧‧‧Metal sheet

888‧‧‧Flexible circuit board

Group G‧‧‧

Ga‧‧‧ group

Group Gb‧‧

Group Gc‧‧

Group Gd‧‧

Between the Mab‧‧ group Ga and the group Gb

Between the Mbc‧‧‧ group Gb and the group Gc

Between the Mcd‧‧ group Gc and the group Gd

Claims (20)

A display device comprising an illumination device and a display panel stacked on a light exit surface side of the illumination device, wherein the illumination device comprises: a light guide plate superposed on the display panel; and a plurality of light-emitting elements Arranging from the one end side toward the other end side along the first side of the light guide plate such that the light emitting surface of each of the plurality of light emitting elements is disposed to face the first side, and the first side is a light incident portion a light source driving unit that drives the plurality of light emitting elements for each of the plurality of sets of the light emitting elements; the light source substrate having the plurality of light emitting elements mounted on the first surface; and the light source supporting member disposed thereon in an overlapping manner a second surface of the light source substrate; and a positioning structure provided between the adjacent ones of the plurality of groups and at least partially exposed to the first surface of the light source substrate Positioning the substrate on the light source supporting member; wherein the plurality of light emitting elements are divided into plural numbers from one end side to the other end side of the first side Group, and the light source driving unit for driving the display panel in the above for each set of interlocking and controlling the amount of light emission. The display device of claim 1, wherein the positioning structure is a screw fixed from the first surface of the light source substrate. The display device of claim 1, wherein in each of the groups, the light-emitting elements are arranged at equal intervals along the first side. A display device according to claim 3, wherein said plurality of light-emitting elements are disposed at equal intervals along said first side. The display device of claim 3, wherein the interval between the light-emitting elements in the group is different from the distance between the light-emitting elements adjacent to adjacent ones of the plurality of groups. The display device according to claim 1, wherein the light source substrate integrally extends from one end side of the light guide plate toward the other end side. The display device of claim 1, wherein the substrate for light source is divided between adjacent groups of the plurality of groups. An electronic machine characterized by comprising the display device of claim 1. A lighting device, comprising: a light guide plate; a plurality of light emitting elements arranged along a first side of the light guide plate from one end side toward the other end side, so that a light emitting surface of each of the plurality of light emitting elements is disposed Facing the first side, the first side is a light incident portion, and the light source driving unit drives the plurality of light emitting elements for each of the plurality of sets of the light emitting elements; and the light source substrate is mounted on the first surface a plurality of the light-emitting elements; the light source supporting member disposed on the second substrate of the light source And a positioning structure disposed between the adjacent groups of the plurality of groups, and positioning the light source substrate on the light source support in a state where at least a portion of the light source substrate is exposed a member in which the plurality of light-emitting elements are divided into a plurality of groups from one end side to the other end side of the first side, and the light source driving unit controls the amount of light emission for each of the groups in conjunction with driving of the display panel. A display device comprising an illumination device and a display panel stacked on a light exit surface side of the illumination device, wherein the illumination device comprises: a light guide plate superposed on the display panel; and a plurality of light-emitting elements Arranging from the one end side toward the other end side along the first side of the light guide plate such that the light emitting surface of each of the plurality of light emitting elements is disposed to face the first side, and the first side is a light incident portion a light source driving unit that drives the plurality of light emitting elements for each of the plurality of sets of the light emitting elements; the light source substrate having the plurality of light emitting elements mounted on the first surface; and the light source supporting member disposed thereon in an overlapping manner a second surface of the substrate for light source; and a structure for positioning, which is disposed adjacent to the plurality of groups The light source substrate is positioned in the light source supporting member in a state in which at least a part of the light source substrate is exposed, and the positioning structure is embedded in the first surface of the light source substrate. The display device of claim 10, wherein the plurality of light-emitting elements are divided into a plurality of groups from one end side toward the other end side of the first side, and the light source driving unit controls the respective groups in conjunction with driving of the display panel The amount of luminescence. The display device of claim 10, wherein in each of the groups, the light-emitting elements are arranged at equal intervals along the first side. The display device of claim 10, wherein the light source substrate integrally extends from one end side of the light guide plate toward the other end side. The display device of claim 10, wherein the substrate for light source is divided between adjacent groups of the plurality of groups. An electronic machine characterized by comprising the display device of claim 10. A display device comprising an illumination device and a display panel stacked on a light exit surface side of the illumination device, wherein the illumination device comprises: a light guide plate superposed on the display panel; and a plurality of light-emitting elements Arranging from the one end side toward the other end side along the first side of the light guide plate such that the light emitting surface of each of the plurality of light emitting elements is disposed to face the first side, and the first side is a light incident portion a brightness distribution detecting unit that detects the plurality of groups of light-emitting elements a brightness of each of the light source driving units for driving the plurality of light emitting elements for each of the plurality of groups based on the brightness detected by each of the plurality of groups; and the light source substrate having the plurality of substrates mounted on the first surface a light-emitting element; a light source supporting member disposed on a second surface of the light source substrate; and a positioning structure disposed between adjacent ones of the plurality of groups and at least partially used in the light source The light source substrate is positioned on the light source supporting member in a state where the first surface of the substrate is exposed. The display device of claim 16, wherein the plurality of light-emitting elements are divided into a plurality of groups from one end side to the other end side of the first side, and the light source driving unit controls the respective groups in conjunction with driving of the display panel The amount of luminescence. The display device of claim 16, wherein in each of the groups, the light-emitting elements are arranged at equal intervals along the first side. The display device of claim 16, wherein the light source substrate integrally extends from one end side of the light guide plate toward the other end side. An electronic machine characterized by comprising the display device of claim 16.