JP6076270B2 - Display device and panel unit - Google Patents

Description

  The present invention relates to a display device and a panel unit, and more particularly to a tiling display that obtains a larger display screen by arranging a plurality of panel units each including a display panel in a tile shape.

  In recent years, display devices tend to become larger and larger. In such an increase in size, from the viewpoints of manufacturing, transportation, and maintenance, rather than forming a large display area with a single large display panel, multiple large display panels can be joined together as a panel unit. There are thought to be great benefits.

  For example, in Patent Document 1, the end of the display element substrate is bent backward, and a plurality of display units in which signal connectors are arranged in the bent rearward portion are joined together so that the joint is not conspicuous. It is described that a large screen can be obtained.

Japanese Patent Laid-Open No. 61-223878

  However, with the recent increase in definition of display devices, it has become a problem to make the joint between panel units more inconspicuous.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a high-definition large-sized display device or the like in which a joint between panel units is not conspicuous.

  In order to solve the above problems, one aspect of the display device according to the present invention is a display device including a plurality of panel units, and each of the plurality of panel units includes a display in which a plurality of pixels are formed. A display panel having a lead area in which electrode wiring is led out in a first direction from the display area and the display area, and a support substrate for supporting the display panel, wherein the support substrate includes the display area of the display panel. A plurality of panels having a first surface disposed, a second surface on which the drawer region of the display panel is disposed, and a third surface located on the opposite side of the second surface. In the first panel unit and the second panel unit arranged side by side in the first direction among the units, each of the first panel unit and the second panel unit One surface forms one plane, the second surface of the first panel unit and the third surface of the second panel unit are opposed to each other, and the first panel unit The pull-out area of the display panel provided is sandwiched between the second surface of the first panel unit and the third surface of the second panel unit.

  Since the width of the joint between the panel units can be narrowed, a high-definition large-sized display device in which the joint between the panel units is not conspicuous can be realized.

(A) is a top view which shows the structure of the panel unit which concerns on Embodiment 1, (b) is a sectional side view of the panel unit in the AA 'line of (a), (c) is It is a sectional side view of the panel unit in the BB 'line of (a). 3 is a plan view showing a display panel, a flexible substrate, and a flexible cable in the panel unit according to Embodiment 1. FIG. 4 is a cross-sectional view showing a configuration of one element of a display panel in the panel unit according to Embodiment 1. FIG. 4 is a perspective view of a support substrate in the panel unit according to Embodiment 1. FIG. 3 is a side sectional view of a support substrate in the panel unit according to Embodiment 1. FIG. FIG. 3 is a main part sectional view of the display device according to the first embodiment. FIG. 3 is a perspective view of main parts of the display device according to the first embodiment. It is a sectional side view of the support substrate used for the panel unit and display apparatus which concern on Embodiment 2. FIG. It is a sectional side view of the support substrate used for the panel unit and display apparatus which concern on Embodiment 3. It is a perspective view which shows schematic structure of the conventional tiling display. It is an expanded view of the display panel in the panel unit (unit panel) used for the conventional tiling display. It is the enlarged plan view and enlarged sectional view of the joint part of the conventional tiling display.

(Background to the embodiment of the present invention)
A configuration of a conventional tiling display 1000 will be described with reference to FIGS. 9 and 10. FIG. 9 is a perspective view showing a schematic configuration of a conventional tiling display. FIG. 10 is a developed view of a display panel in a panel unit (unit panel) used in a conventional tiling display. That is, FIG. 10 shows the display panel in a state before the drawer region is bent.

  As shown in FIG. 9, in the conventional tiling display 1000, one large display screen is configured by joining a plurality of panel units 1001 in a tile shape.

  As shown in FIG. 10, a display panel 1010 used in each panel unit 1001 includes a rectangular display area 1010a in which a plurality of pixels are formed, and four extended areas 1010b that extend from each side of the display area 1010a. (Non-display area). In the display panel 1010, two of the four overhanging areas 1010b are drawer areas. The two projecting regions 1010b include a first lead region in which the first electrode wiring is led out from the display region 1010a in the first direction and a second direction in the second direction perpendicular to the first direction from the display region 1010a. And a second extraction region from which the electrode wiring is extracted.

  Since the display panel 1010 configured in this manner is configured by a pair of flexible substrates, it can be bent. As shown in FIG. 10, the panel unit 1001 is configured by bending each of the four overhanging regions 1010b of the display panel 1010 to the back surface of the display region 1010a.

  However, in such a tiling display 1000 in which the panel units 1001 are joined together, it is difficult to make the joint between the panel units 1001 inconspicuous when the definition is increased. This point will be described with reference to FIG. FIG. 11 is an enlarged plan view and an enlarged sectional view of a joint portion of a conventional tiling display.

  As described above, in the conventional display panel 1010 shown in FIG. 10, each of the four extended areas 1010b is bent, and therefore, between the two panel units 1001 adjacent to each other in the vertical and horizontal directions of the tiling display 1000. As shown in FIG. 11, the projecting regions 1010b of the display panels 1010 overlap each other. That is, there are two projecting regions 1010b between two adjacent panel units 1001. In this case, the interval (joint width) between the panel units is the interval (distance) between the endmost pixels PX of each panel unit, and the joint width W is expressed by the following equation.

  W = (sealing width H + panel thickness t + bending width R) × 2 + panel unit gap G

  For example, if the sealing width H = 200 μm, the panel thickness t = 80 μm, the bending width R = 500 μm, and the inter-panel unit gap G = 20 μm, the joint width is W = (200 + 80 + 500) × 2 + 20 = 1580 μm, and no light emission This is much larger than the interval (pixel pitch).

  In this case, if the joint width is made narrow so as to make the joint inconspicuous, the thickness of the substrate of the display panel 1010 at the joint portion between the two adjacent panel units 1001 is taken into consideration in the bent portion of the substrate. The required radius of curvature is small. For this reason, the subject that a board | substrate breaks or the thin film and electrode which were formed in the board | substrate peel or crack will generate | occur | produce.

  As described above, in the configuration of the conventional tiling display 1000, it is difficult to realize a joint width that makes the joint between the panel units 1001 inconspicuous when the definition is increased.

  The present invention has been made based on such knowledge, and an object of the present invention is to provide a display device that can make the joint between panel units inconspicuous even if the definition is increased.

  In order to achieve the above object, one aspect of a display device according to the present invention is a display device including a plurality of panel units, each of the plurality of panel units being a display in which a plurality of pixels are formed. A display panel having a lead area in which electrode wiring is led out in a first direction from the display area and the display area, and a support substrate for supporting the display panel, wherein the support substrate includes the display area of the display panel. A plurality of panels having a first surface disposed, a second surface on which the drawer region of the display panel is disposed, and a third surface located on the opposite side of the second surface. In the first panel unit and the second panel unit arranged side by side in the first direction among the units, each of the first panel unit and the second panel unit One surface forms one plane, the second surface of the first panel unit and the third surface of the second panel unit are opposed to each other, and the first panel unit The drawer region of the display panel provided is sandwiched between the second surface of the first panel unit and the third surface of the second panel unit.

  According to this aspect, in the first panel unit and the second panel unit adjacent in the first direction, the second surface of the support substrate of the first panel unit and the support substrate of the second panel unit. The third surface is opposed to and overlaps with each other, and the pull-out area of the display panel included in the first panel unit is the second surface of the support substrate of the first panel unit and the second panel unit. It is sandwiched between the third surface of the support substrate.

  Thereby, since the width of the joint between the first panel unit and the second panel unit can be narrowed, the joint between the panel units is not conspicuous, and a high-definition large-sized display device can be realized.

  In the display device according to the aspect of the invention, the second surface may be inclined so as to form an obtuse angle with respect to the first surface.

  Accordingly, even if the display panel lead-out region is folded at the boundary between the first surface and the second surface, it is easily avoided that the substrate of the display panel is cracked or the electrode wiring is peeled off or damaged. be able to.

  In the display device according to the aspect of the invention, the third surface may be a surface parallel to the second surface.

  Thereby, when arranging a plurality of panel units, in the panel units adjacent to each other in the first direction, the first surfaces of the mutual support substrates can be easily arranged on one plane.

  In one aspect of the display device according to the present invention, a boundary portion between the first surface and the second surface is curved so as to have a radius of curvature larger than the radius of curvature of the display panel. It is good also as.

  Thereby, it can prevent that the crack of a board | substrate of a display panel arises, or electrode wiring peels or breaks.

  In one aspect of the display device according to the present invention, a boundary portion between the second surface and the third surface is curved so as to have a radius of curvature larger than the radius of curvature of the display panel. It is good also as.

  Thereby, it can prevent that the crack of a board | substrate of a display panel arises, or electrode wiring peels or breaks.

  In the aspect of the display device according to the present invention, each of the first panel unit and the second panel unit includes a holding plate, and the holding plate faces the first surface of the support substrate. The drawer area of the display panel is bent to a position facing the fourth surface of the support substrate and held by the holding plate. It is good also as.

  Thereby, since the drawer | drawing-out area | region of a display panel is bend | folded and hold | maintained to the 4th surface (back surface) side of a support substrate, the width | variety of the joint between panel units can be narrowed easily.

  In the display device according to the aspect of the invention, the holding plate may be arranged in parallel with the display area of the display panel.

  Thereby, since a drawer | drawing-out area | region and a display area become parallel, it can suppress that the curvature radius of the bending part of the drawer | drawing-out area | region of a display panel exceeds the curvature-resistant radius of a display panel. Accordingly, it is possible to prevent the display panel substrate from cracking or peeling off or damaging the electrode wiring.

  Also, in one aspect of the display device according to the present invention, each of the first panel unit and the second panel unit includes a circuit board electrically connected to the electrode wiring, and the circuit board includes the circuit board It is good also as arrange | positioning in parallel with the said display area of the said display panel in the said 4th surface side of a support substrate.

  Thereby, even if the panel unit includes a circuit board, it is possible to suppress an increase in the size of the panel unit by the circuit board, so that a small and thin panel unit can be realized.

  In the aspect of the display device according to the present invention, each of the first panel unit and the second panel unit includes a flexible substrate connected to the drawer region of the display panel, and the flexible substrate includes The driver IC may be provided, and the flexible substrate may be in contact with the holding plate.

  Thereby, the heat generated in the driver IC can be dissipated through the holding plate, so that the thermal destruction of the driver IC can be suppressed.

  In the display device according to the aspect of the invention, the holding plate may be made of a material having high thermal conductivity.

  As a result, heat generated in the driver IC can be dissipated more effectively, so that thermal destruction of the driver IC can be further suppressed.

  In the display device according to the aspect of the invention, the circuit board may be installed between the support substrate and the holding plate.

  As a result, the circuit board is arranged in the space between the support substrate and the holding plate that is generated by bending the pull-out area of the display panel. Therefore, even if the panel unit has individual circuit boards, the thin panel unit Can be realized.

  In the display device according to the aspect of the invention, the circuit board may be arranged so as to be covered with the support substrate.

  Thereby, even if the panel unit has a circuit board individually, the circuit board does not get in the way when arranging a plurality of panel units in a planar shape.

  In the display device according to the aspect of the invention, the holding plate may hold the drawer region so as to sandwich the drawer region of the display panel.

  Thereby, the drawer | drawing-out area | region of a display panel can be hold | maintained stably.

  In the display device according to the aspect of the present invention, a portion of the pull-out region of the display panel that is bent from the support substrate to a portion held by the holding plate is a radius of curvature of the display panel. It may be curved so as to have a larger radius of curvature.

  Thereby, it can prevent that the crack of a board | substrate of a display panel arises, or electrode wiring peels or breaks.

  In the display device according to the aspect of the invention, the second surface and the third surface may be flat surfaces.

  Thereby, it is possible to apply a force uniformly to the drawer region of the display panel sandwiched between the second surface and the third surface. Therefore, the drawer region can be stably held, and the occurrence of cracks or the like in the drawer region can be suppressed.

  In the display device according to the aspect of the invention, the second surface and the third surface may be curved surfaces that are fitted to each other.

  Thereby, the curvature radius of the bending part in the drawer | drawing-out area | region of a display panel can be prescribed | regulated by bending the drawer | drawing-out area | region of a display panel along a 2nd surface.

  In the display device according to the aspect of the invention, the display panel may be fixed by an adhesive layer disposed on the surface of the support substrate.

  Thereby, the display area of the display panel can be bonded and fixed to the first surface of the support substrate.

  In the display device according to the aspect of the invention, the display panel may be configured using a substrate made of a flexible material.

  Thereby, the drawer | drawing-out area | region of a display panel can be bent easily.

  An aspect of the panel unit according to the present invention is a panel unit that forms a display device by arranging a plurality of the panel units, and the panel unit includes a display area in which a plurality of pixels are formed and a display area from the display area. A display panel having an extraction region from which electrode wiring is extracted in one direction; and a support substrate for supporting the display panel, wherein the support substrate has a portion corresponding to the display region of the display panel. A first surface; a second surface on which a portion corresponding to the drawer region of the display panel is disposed; and a third surface located on the opposite side of the second surface.

  Thus, according to this aspect, in the first panel unit and the second panel unit adjacent in the first direction, the second surface of the support substrate of the first panel unit and the second panel unit The third surface of the support substrate is opposed to and overlaps with each other, and the display panel pull-out area included in the first panel unit has a second surface and a second surface of the support substrate of the first panel unit. It is sandwiched between the third surface of the support substrate of the panel unit.

  Accordingly, when a display device having one large display screen is configured by arranging a plurality of the panel units in a tile shape (matrix shape), the width of the joint between the panel units adjacent in the first direction is reduced. can do.

(Embodiment)
DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings. However, the present invention is naturally not limited to these forms, and numerical values, shapes, and materials shown in the following embodiments. The component, the arrangement position and connection form of the component, the process, the order of the process, etc. are examples, and the components not described in the independent claims indicating the highest concept among the components in the following embodiments Elements are described as optional components.

  In addition, in each figure, about the substantially same component, the same code | symbol is attached | subjected. Each figure is a mimetic diagram and is not necessarily illustrated strictly.

(Embodiment 1)
First, the configuration of the panel unit 1 according to Embodiment 1 will be described with reference to FIG. 1A and 1B are diagrams showing a configuration of a panel unit according to Embodiment 1, wherein FIG. 1A is a plan view, FIG. 1B is a side sectional view of the panel unit taken along line AA ′ in FIG. c) is a side sectional view of the panel unit taken along line BB ′ in FIG.

  As shown in FIGS. 1A to 1C, the panel unit 1 includes a display panel 10 that displays an image and a support substrate 20 that supports the display panel 10. A part of the display panel 10 is bent and supported by the support substrate 20.

  The panel unit 1 further includes a holding plate 30 that holds a bent portion of the display panel 10, a flexible substrate 40 connected to the display panel 10, a flexible cable 50 connected to the flexible substrate 40, and a flexible cable 50. And a connected circuit board 60.

  The panel unit 1 in this Embodiment is a unit panel unit used as the unit structure of a large sized display apparatus. That is, a display device (tiling display) having one large display screen is configured by arranging a plurality of panel units 1 in a tile shape (matrix shape).

  Hereafter, each structural member of the panel unit 1 is demonstrated using FIG.2, FIG.3, FIG.4A and FIG. 4B, referring FIG.

  FIG. 2 is a plan view showing a display panel, a flexible substrate, and a flexible cable in the panel unit according to the first embodiment. FIG. 2 shows a state of the flat display panel 10 before being bent. FIG. 3 is a cross-sectional view showing a configuration of one element of the display panel in the panel unit according to the first embodiment. 4A is a perspective view of the support substrate in the panel unit according to Embodiment 1, and FIG. 4B is a side sectional view of the support substrate.

[Display panel]
As shown in FIG. 2, the display panel 10 includes a display area 10a in which a plurality of pixels are formed, an extraction area 10b in which electrode wiring is drawn from the display area 10a in a predetermined first direction, and a display area 10a. And a peripheral region 10c located in the periphery.

  The display area 10a is an area where an image is displayed. In the present embodiment, the planar view shape of the display area 10a is a square or a rectangular rectangle. On the other hand, the extraction area 10b and the peripheral area 10c are non-display areas where no image is displayed.

  The lead-out area 10b is an extended area formed so as to extend from the rectangular display area 10a to the outside of the display area 10a. In the present embodiment, the extraction region 10b is formed so as to protrude from only one of the four sides of the display region 10a.

  The planar view shape of the display area 10a is not limited to a rectangular shape, but may be a polygon such as a triangle or a hexagon. Moreover, the planar view shape of the extraction | drawer area | region 10b is good also as a shape as shown in FIG. 2, good also as a substantially trapezoid, and the rectangle which makes a longitudinal direction in the direction (1st direction) which the extraction | drawer area | region 10b protruded. Also good.

  FIG. 3 shows a cross section of the configuration of one element (one subpixel) formed in the display panel 10. In the present embodiment, a passive matrix driving type organic EL panel will be described as an example of the display panel 10, but an active matrix driving type organic EL panel may be used, and the present invention is not limited thereto. .

  As shown in FIG. 3, the display panel 10 is formed on the first substrate 11 made of a flexible material, the first electrode wiring 12 formed on the first substrate 11, and the first electrode wiring 12. The planarized layer 13, the second electrode wiring 14 formed on the planarized layer 13, and the organic EL layer 15 that is formed on the second electrode wiring 14 and is an electro-optic layer including a light emitting layer. A third electrode wiring 16 formed on the organic EL layer 15, a sealing layer 17 formed on the third electrode wiring 16, and a second electrode formed on the sealing layer 17. And a substrate 18.

  The second electrode wiring 14, the organic EL layer 15 and the third electrode wiring 16 constitute an organic EL element 10EL. The organic EL element 10EL is partitioned from the adjacent organic EL element 10EL by the bank 19. The organic EL element 10EL is sealed by the sealing layer 17 and the second substrate 18. The second substrate 18 that is the light extraction side substrate is also made of a flexible material, like the first substrate 11.

  The display panel 10 configured as described above is a flexible organic EL panel, and the organic EL element 10EL is sandwiched between a first substrate 11 and a second substrate 18 which are a pair of flexible substrates. ing. Further, the display panel 10 has flexibility that can be bent with a radius of curvature that does not cause cracks in the substrate or peeling or breakage of the electrode wiring.

  The display panel 10 is a top emission type in which light is emitted from the second substrate 18, but may be a bottom emission type in which light is emitted from the first substrate 11.

  Next, each component of the display panel 10 will be described in more detail.

  The first substrate 11 and the second substrate 18 may be any substrate having flexibility, for example, polyester such as polyethylene terephthalate, polyethylene naphthalate or polybutylene terephthalate, cellulose such as triacetyl cellulose or diacetyl cellulose. Resin, polyethylene, polycarbonate, polyarylate, polysulfone, polyethersulfone, polyetherimide, polyimide, polyolefin, or acrylic resin such as polymethyl methacrylate can be used. Moreover, as the 1st board | substrate 11 and the 2nd board | substrate 18, the transparent resin substrate which consists of other transparent resin can be used.

  The first electrode wiring 12 functions as a lead wiring for leading the second electrode wiring 14 and the third electrode wiring 16 formed in the display region 10a to the lead region 10b. In the display panel 10, the first electrode wiring 12 extends in the row direction. Are formed. Specifically, although not shown, each of the second electrode wiring 14 and the third electrode wiring 16 is connected to each of the plurality of first electrode wirings 12 through a contact hole. .

  That is, the first electrode wiring 12 includes a plurality of first extraction wirings for drawing out the second electrode wiring 14 extending in the column direction in the row direction, and a third electrode extending in the row direction. A plurality of second lead wires for drawing the wire 16 to the lead region 10b. The first lead wiring of the first electrode wiring 12 is again connected to the second electrode formed in the row direction in the lead region 10b through the contact hole, and the portion exposed at the end serves as an electrode terminal. Function.

  The second lead wiring of the first electrode wiring 12 extends beyond the display area 10a to the lead area 10b, and the portion exposed at the extended end functions as an electrode terminal. . In the present embodiment, such a configuration is used as a method for extracting the second electrode wiring 14 and the third electrode wiring 16 from the display region 10a in the first direction. However, the present invention is not limited to this. It is not something.

  As a material of the first electrode wiring 12, for example, a metal such as aluminum (Al), copper (Cu), molybdenum (Mo), tungsten (W), a compound of these metals, or an alloy containing these metals. Etc. can be used.

  The planarization layer 13 is made of an insulating material such as polyimide resin or acrylic resin, and planarizes the step on the upper surface of the first electrode wiring 12.

  The second electrode wiring 14 functions as, for example, an anode, and a plurality of second electrode wirings 14 are formed in the column direction in the display region 10a and in the row direction in the extraction region 10b. Examples of the material of the second electrode wiring 14 include metals such as silver (Ag), aluminum (Al), molybdenum (Mo), and tungsten (W), compounds of these metals, or alloys containing these metals. Etc. can be used. Further, since the top emission type display panel 10 according to the present embodiment is a top emission type, the second electrode wiring 14 which is a lower electrode is a reflection electrode, and the surface portion thereof has high reflectivity. Is preferred.

  The organic EL layer 15 can be formed by a general method. The organic EL layer 15 is often formed of a plurality of layers. For example, a hole injection layer, a hole transport layer, a light emitting layer, an electron transport layer, and the like are formed in this order from the second electrode wiring 14 side. .

  The material of each layer of the organic EL layer 15 can also be a general material, for example, the following materials can be used.

  The hole injection layer may be, for example, an oxide such as silver (Ag), molybdenum (Mo), chromium (Cr), vanadium (V), tungsten (W), nickel (Ni), iridium (Ir), or PEDOT A conductive polymer material such as (polyethylenedioxythiophene) can be used.

  The hole transport layer is, for example, a tetraarylbenzidine compound (triphenyldiamine: TPD), an aromatic tertiary amine, a hydrazone derivative, a carbazole derivative, a triazole derivative, an imidazole derivative, an oxadiazole derivative having an amino group, a polythiophene derivative Copper phthalocyanine derivatives and the like can be used.

  Examples of the material for the light emitting layer include oxinoid compounds, perylene compounds, coumarin compounds, azacoumarin compounds, oxazole compounds, oxadiazole compounds, perinone compounds, pyrrolopyrrole compounds, naphthalene compounds, anthracene compounds, fluorene compounds, fluoranthene compounds, tetracene compounds. , Pyrene compounds, coronene compounds, quinolone compounds and azaquinolone compounds, pyrazoline derivatives and pyrazolone derivatives, rhodamine compounds, chrysene compounds, phenanthrene compounds, cyclopentadiene compounds, stilpene compounds, diphenylquinone compounds, styryl compounds, butadiene compounds, dicyanomethylenepyran compounds, Dicyanomethylenethiopyran compounds, fluorescein compounds, pyrylium compounds, thiapyrylium compounds , Serenapyrylium compound, Telluropyrylium compound, Aromatic Ardadiene Compound, Oligophenylene Compound, Thioxanthene Compound, Cyanine Compound, Acridine Compound, Metal Complex of 8-Hydroxyquinoline Compound, Metal Complex of 2-Bipyridine Compound, Schiff Salt and Group III A fluorescent substance such as a complex with a group metal, an oxine metal complex, or a rare earth complex can be used.

  The electron transport layer exhibits an electron transport property, and for example, an oxadiazole derivative (OXD), a triazole derivative (TAZ), a phenanthroline derivative (BCP, Bphen), or the like can be used.

  The third electrode wiring 16 functions as, for example, a cathode, and a plurality of third electrode wirings 16 are formed in the row direction in the display region 10a. That is, the second electrode wiring 14 and the third electrode wiring 16 are formed orthogonally. As the third electrode wiring 16, for example, a transparent electrode made of a conductive metal oxide such as ITO (Indium Tin Oxide) or IZO (Indium Zinc Oxide) can be used. Further, since the display panel 10 according to the present embodiment is a top emission type, it is necessary to extract light through the third electrode wiring 16 that is an upper electrode. For this reason, it is preferable that the 3rd electrode wiring 16 is transparent with respect to the light from the organic EL element 10EL.

  The sealing layer 17 is a layer for covering and sealing the display region 10a and preventing the organic EL layer element 10EL from touching moisture or air. The sealing layer 17 is made of a light transmissive material such as silicon nitride (SiN) or silicon oxynitride oxide (SiON), and is formed on the third electrode wiring 16.

  The bank 19 is made of, for example, an insulating organic material such as an acrylic resin, a polyimide resin, or a novolac type phenol resin, and is formed so as to avoid a region where the second electrode wiring 14 is formed. The bank 19 may be formed using an inorganic material.

  Regarding the stacked structure of the display panel 10 described above, an electron injection layer may be provided between the electron transport layer and the third electrode wiring 16.

  The electron injection layer can be formed by co-evaporating a material that exhibits an electron donating property with respect to the substance used for the electron transport layer. Examples of materials that exhibit electron donating properties include alkali metals such as lithium and cesium, alkaline earth metals such as magnesium and calcium, and metals such as rare earth metals, or oxides, halogen compounds, and carbonates thereof. You can choose.

  In this embodiment, as a method of cutting the display panel 10 into an arbitrary shape, a YAG third harmonic laser is used to cut the outside of the pixel end in the display region 10a with a width equal to or smaller than the pixel pitch. However, the method is not limited to this method as long as the organic EL element 10EL can be cut without damage.

[Support substrate]
As shown in FIGS. 1B and 1C, the support substrate 20 is a base for holding the display panel 10. The display panel 10 is fixed to the support substrate 20. The material of the support substrate 20 is not particularly limited. For example, a resin such as acrylic or a metal such as aluminum can be used. Moreover, the thickness of the support substrate 20 is 5 mm as an example.

  As shown in FIGS. 4A and 4B, the support substrate 20 in the present embodiment is a plate-like substrate having a rectangular shape in plan view and a substantially parallelogram-shaped cross section, and includes a first surface 20a, A second surface 20b, a third surface 20c, and a fourth surface 20d.

  The first surface 20a is a surface on which the display area 10a of the display panel 10 is arranged. The first surface 20 a is planar and is a main surface (front side surface) on the front side of the support substrate 20. In the present embodiment, the shape of the planar region of the first surface 20a is substantially the same as the shape of the region where the display region 10a and the peripheral region 10c in the display panel 10 are combined.

  The second surface 20b is a surface continuous with the first surface 20a and the fourth surface 20d, and is a surface on which the drawer region 10b of the display panel 10 is disposed. In the present embodiment, the second surface 20b is a flat inclined surface that is inclined with respect to the first surface 20a and the fourth surface 20d.

  The second surface 20b is inclined so as to form an obtuse angle with the first surface 20a, and is inclined so as to form an acute angle with the fourth surface 20d. By configuring the second surface 20b and the first surface 20a to form an obtuse angle, the drawer area 10b of the display panel 10 is bent at the boundary between the second surface 20b and the first surface 20a. In addition, it is possible to easily avoid that the substrate of the display panel 10 is cracked or the electrode wiring is peeled off or damaged.

  In addition, the boundary portion between the first surface 20a and the second surface 20b and the boundary portion between the fourth surface 20d and the second surface 20b are cracked in the substrate of the display panel 10 or the electrode wiring is peeled off. The display panel 10 may be curved so as to have a radius of curvature larger than the radius of curvature of the display panel 10 so as not to be damaged. That is, it is better to give a round to the boundary portion.

  The third surface 20c is a surface that is continuous with the first surface 20a and the fourth surface 20d and is located on the opposite side of the second surface 20b. That is, the third surface 20c is a surface facing the second surface 20b, and is a surface parallel to the second surface 20b in the present embodiment. Thereby, when arranging a plurality of panel units 1, in the panel unit 1 adjacent in the first direction, the first surfaces 20a of the support substrates 20 can be easily arranged on one plane (same plane). Can do. In the present embodiment, the third surface 20c is an inclined surface on a plane that is inclined with respect to the first surface 20a and the fourth surface 20d.

  The third surface 20c is inclined so as to form an acute angle with the first surface 20a, and is inclined so as to form an obtuse angle with the fourth surface 20d. In addition, the boundary portion between the first surface 20a and the third surface 20c and the boundary portion between the fourth surface 20d and the third surface 20c adversely affect the substrate of the display panel 10 of the adjacent panel unit 1. It should be curved so that it does not. That is, it is better to give a round to the boundary portion.

  The fourth surface 20d is a surface that is continuous with the second surface 20b and the third surface 20c and is located on the opposite side of the first surface 20a. The fourth surface 20 d is planar and is the main surface (back side surface) on the back side of the support substrate 20.

  Further, the support substrate 20 is provided with an insertion hole 21 through which the screw 70 is inserted. The insertion hole 21 is provided so as to penetrate in the thickness direction of the support substrate 20. Since four screws 70 are used in the present embodiment, the insertion holes 21 are provided at four locations on the support substrate 20.

  If the screw head of the screw 70 protrudes from the support substrate 20, the display panel 10 may be adversely affected. In order to avoid this, it is desirable that the screw head of the screw 70 is embedded in the support substrate 20. For example, as shown in FIGS. 4A and 4B, the screw head of the screw 70 is stored in the insertion hole 21. It is advisable to provide a counterbore (recess) for this purpose. Further, the position of the screw 70 may be determined in consideration of the width of the sealing layer of the display panel 10 and the arrangement relationship of each electrode.

[Holding plate]
As shown in FIGS. 1B and 1C, the holding plate 30 is disposed so as to be positioned on the back side (the fourth surface 20 d side) of the support substrate 20. In the present embodiment, the holding plate 30 is arranged in parallel with the display area 10 a of the display panel 10. That is, the holding plate 30 is disposed in parallel with the first surface 20 a and the fourth surface 20 d of the support substrate 20. Thereby, since the drawer area 10b of the display panel 10 and the display area 10a become parallel, it can suppress that the curvature radius of the bending part of the drawer area 10b of the display panel 10 exceeds the curvature-proof radius of the display panel 10.

  The holding plate 30 is provided with an insertion hole 31 through which the screw 70 is inserted. The insertion hole 31 is provided so as to penetrate in the thickness direction of the holding plate 30.

  The holding plate 30 holds the drawer region 10b of the display panel 10 at a position on the back side (the fourth surface 20d side) of the support substrate 20. That is, the lead-out area 10 b of the display panel 10 is bent to a position facing the fourth surface 20 d of the support substrate 20 and held by the holding plate 30. Specifically, the holding plate 30 is composed of two rectangular substrates, and holds the drawer region 10b so as to sandwich the drawer region 10b of the display panel 10.

  The holding plate 30 further holds the flexible substrate 40 and the flexible cable 50. Specifically, the two holding plates 30 sandwich the overlapping portion of the display panel 10 and the flexible substrate 40 and the overlapping portion of the flexible cable 50 and the flexible substrate 40 so that the flexible substrate 40 and the flexible cable 50 are sandwiched. And holding.

  The holding plate 30 may be made of a material having high thermal conductivity in order to efficiently dissipate heat generated by the driver IC 41 mounted on the flexible substrate 40. That is, the holding plate 30 may be configured to have not only a holding function but also a heat dissipation function.

  Although the driver IC 41 generates heat due to current flow and may break when it reaches a high temperature, the heat generation in the driver IC 41 can be suppressed by providing the holding plate 30 with a heat dissipation function. As a result, the power supply voltage can be kept high, so that a desired image can be easily displayed on the display panel 10. In the present embodiment, the holding plate 30 is an aluminum plate made of aluminum that is inexpensive, has good workability, and has a relatively high thermal conductivity.

  Further, the flexible substrate 40 may be brought into contact with the holding plate 30 in order to improve the heat dissipation of the flexible substrate 40. In order to secure a large heat radiation area and obtain a high heat radiation effect, for example, as shown in FIGS. 1B and 1C, the flexible substrate 40 and the holding plate 30 may be brought into surface contact.

  Furthermore, heat dissipation silicone with good thermal conductivity may be applied to the space between the driver IC 41 and the holding plate 30. Thereby, since the heat dissipation effect can be improved, the heat generation of the driver IC 41 can be further suppressed.

  Note that the method of dissipating the heat generated by the driver IC 41 is not limited to the method of the present embodiment.

  Further, in the present embodiment, two holding plates 30 having the same shape are used. However, the drawing region 10b of the display panel 10 may be held by using two holding plates 30 having different shapes. The drawer region 10b of the display panel 10 may be held using the holding plate 30.

  Further, in order to avoid an adverse effect on the drawer region 10b of the display panel 10, a corner portion (edge) of the holding plate 30 may be rounded.

[Flexible substrate]
The flexible substrate 40 is a COF (Chip On Film) or TCP (Tape Carrier Package), for example, a flexible printed wiring having a metal wiring such as a copper foil formed on a film-like substrate made of polyimide, for example. A driver IC (LSI chip) 41 is directly mounted on a substrate.

  As shown in FIG. 2, the flexible substrate 40 is connected to the end portion of the drawer region 10 b of the display panel 10. For example, it can connect by thermocompression bonding using ACF (Anisotropic Conductive Film).

  Further, as shown in FIGS. 1B and 1C, the flexible substrate 40 is held between two holding plates 30.

[Flexible cable]
The flexible cable 50 is an FPC (Flexible Printed Circuits), which is a flexible printed wiring board having flexibility in which a metal wiring such as a copper foil is formed on a film-like base material made of polyimide, for example.

  As shown in FIG. 2, one end of the flexible cable 50 is connected to the flexible substrate 40. Further, as shown in FIGS. 1B and 1C, the other end of the flexible cable 50 is connected to the circuit board 60.

[Circuit board]
The circuit board 60 is electrically connected to various wirings of the display panel 10 through the flexible board 40 and the flexible cable 50. The circuit board 60 includes, for example, a printed board on which wiring is formed and a plurality of circuit elements mounted on the printed board.

  As shown in FIGS. 1B and 1C, the circuit board 60 is arranged in parallel with the display area 10 a of the display panel 10 on the back surface side (the fourth surface 20 d side) of the support substrate 20. . That is, the circuit board 60 is disposed in parallel with the first surface 20a and the fourth surface 20d of the support substrate 20.

  The circuit board 60 is installed between the support board 20 and the holding plate 30. That is, the circuit board 60 is disposed using a space between the support board 20 and the holding plate 30 that is generated by bending the lead-out region 10b. Thereby, even if the panel unit 1 has the circuit board 60 individually, a thin panel unit is realizable.

  Further, the circuit board 60 is disposed so as to be covered with the support board 20. That is, as shown in FIG. 1A, the circuit board 60 is configured not to protrude from the support board 20 when viewed in plan. Thereby, even if the panel unit 1 has the circuit board 60 individually, when arranging the several panel unit 1 in tile shape, the circuit board 60 does not become obstructive.

  Further, the circuit board 60 is provided with an insertion hole 61 for inserting the screw 70. The insertion hole 61 is provided so as to penetrate in the thickness direction of the circuit board 60.

[Configuration of panel unit after assembly]
Next, a detailed configuration of the assembled panel unit 1 will be described with reference to FIG.

  As shown in FIGS. 1A to 1C, the display area 10 a of the display panel 10 is fixed to the first surface 20 a of the support substrate 20. In the present embodiment, the display area 10 a of the display panel 10 is fixed to the support substrate 20 by an adhesive layer disposed on the surface of the first surface 20 a of the support substrate 20. For example, an adhesive, an adhesive, a non-slip sheet, or the like is pasted between the back surface (non-light extraction side surface) of the display panel 10 and the first surface 20a of the support substrate 20 in the display area 10a of the display panel 10. Thus, the display panel 10 and the support substrate 20 can be fixed.

  In addition, the lead-out area 10b of the display panel 10 is in the vicinity of the boundary with the peripheral area 10c (that is, the boundary between the first surface 20a and the second surface 20b of the support substrate 20). It is bent along the surface 20b. Further, the portion of the extraction region 10b that protrudes from the second surface 20b is bent and bent so as to be folded back to the back surface (surface on the fourth surface 20d side) of the support substrate 20.

  The drawer region 10b of the display panel 10 bent to the back surface of the support substrate 20 is sandwiched and held by a holding plate 30 disposed on the back surface side of the support substrate 20. In this case, the holding plate 30 is fixed to the support substrate 20 by screws 70 inserted through the insertion holes 21 of the support substrate 20. More specifically, the holding plate 30 can be fixed to the supporting substrate 20 by the nut 71 attached to the screw 70 by inserting the screw 70 inserted into the supporting substrate 20 into the insertion hole 31 of the holding plate 30. Thereby, even if a restoring force (spring back) is generated in the pull-out region 10b of the display panel 10 by bending, the display panel 10 can be kept in a fixed shape without changing the bent state.

  Thus, the drawer area 10b of the display panel 10 is held on the support substrate 20 in a state of being bent so as to be curved. In this case, a portion of the pull-out region 10 b of the display panel 10 that is bent from the support substrate 20 to a portion that is held by the holding plate 30 is curved so as to have a radius of curvature larger than the radius of curvature of the display panel 10. ing. Thereby, it can prevent that a crack arises in the board | substrate of the display panel 10, or electrode wiring peels or breaks.

  In the display panel 10 according to the present embodiment, the extraction region 10b protrudes from only one side of the display region 10a, and the extraction region 10b is not formed on the side opposite to the one side. Therefore, the display panel 10 does not exist on the third surface 20 c of the support substrate 20.

  Moreover, the holding plate 30 also holds the flexible substrate 40 as described above. A flexible cable 50 is led out from the flexible board 40, and the flexible cable 50 is connected to the circuit board 60.

  The circuit board 60 is disposed so as to be inserted between the support board 20 and the holding plate 30. The screw 70 is inserted into the circuit board 60 before the screw 70 is inserted into the holding board 30. 20 is fixed.

  A spacer 80 is attached to the screw 70 into which the holding plate 30 is not inserted. Thereby, when the panel unit 1 is fixed to a plate-shaped solid member (not shown), the surface of the panel unit 1 can be prevented from being inclined with respect to the main surface of the solid member.

  In this embodiment, the display panel 10 is fixed to the support substrate 20 by the method described above, but the method of fixing the display panel 10 to the support substrate 20 is not limited to this.

[Display device]
Next, the display device 100 according to the first embodiment will be described with reference to FIGS. 5 and 6. FIG. 5 is a cross-sectional view of a main part of the display device according to the first embodiment. FIG. 6 is a perspective view of a main part of the display device according to the first embodiment.

  As shown in FIGS. 5 and 6, the display device 100 according to the first embodiment uses the panel unit 1 (tiling panel unit) described above as a unit panel, and arranges a plurality of the panel units 1 in a tile shape. It is a tiling display having one large display screen.

  Specifically, the display device 100 includes a plurality of panel units 1 each having a display screen, and a fixing member 2 for fixing the panel unit 1. The display device may further include a housing for housing the plurality of panel units 1 fixed to the fixing member 2.

  The fixing member 2 is an entire substrate and fixes all the panel units 1 constituting the display device 100 together. In the present embodiment, the plurality of panel units 1 are fixed to the fixing member 2 using the screws 70 of the panel units 1. Specifically, the screw 70 is inserted into an insertion hole provided in the fixing member 2 and is fastened and fixed by a nut 72. The fixing member 2 is, for example, an aluminum plate or an aluminum chassis.

  The plurality of panel units 1 are arranged adjacent to each other and joined together in a matrix. For example, the plurality of panel units 1 are arranged in a matrix so as to be rectangular as a whole.

  In this case, the first panel unit 1a and the second panel unit 1b arranged side by side in the first direction (the direction in which the drawer region 10b is pulled out) of the plurality of panel units 1 are the first panels. The first surface 20a of the support substrate 20 of each of the unit 1a and the second panel unit 1b forms one plane (same plane). As a result, each display panel 10 of the first panel unit 1a and the second panel unit 1b is disposed on each of the two support substrates 20 forming the same plane, so that one display surface (the same display surface) ).

  Further, in the adjacent first panel unit 1a and second panel unit 1b, the second surface 20b of the support substrate 20 of the first panel unit 1a and the third surface of the support substrate 20 of the second panel unit 1b. The display area 10b of the display panel 10 included in the first panel unit 1a has a second surface 20b and a second surface 20b of the support substrate 20 of the first panel unit 1a. It is sandwiched between the third surface 20c of the support substrate 20 of the second panel unit 1b.

  In other words, in the present embodiment, as shown in FIG. 2, the pull-out area 10b of the display panel 10 in the panel unit 1 protrudes only from one side of the display area 10a, so the support substrate 20 of the first panel unit 1a. Between the second surface 20b of the second panel unit 1b and the third surface 20c of the support substrate 20 of the second panel unit 1b, only the drawer region 10b of the display panel 10 in the first panel unit 1a exists.

  As described above, in the display device 100 according to the present embodiment, when the plurality of panel units 1 are arranged in a matrix, the first panel unit 1a adjacent in the first direction (the direction in which the drawer region 10b is pulled out). For the second panel unit 1b, the first surfaces 20a of the support substrates 20 are arranged so as to form one plane, and the second surface 20b of the support substrate 20 of the first panel unit 1a The third panel 20c of the second panel unit 1b is arranged so as to face and overlap the third surface 20c.

  By arranging in this way, at the boundary portion between the first panel unit 1a and the second panel unit 1b arranged side by side in the first direction (the direction in which the drawer region 10b is pulled out), the first The display area 10a of the display panel 10 of the second panel unit 1b overlaps the drawer area 10b of the display panel 10 disposed on the second surface 20b of the support substrate 20 of the panel unit 1a.

  Thereby, as shown in FIG. 6, the space | interval (joint width) W between the 1st panel unit 1a and the 2nd panel unit 1b can be narrowed compared with the case of FIG. . That is, the interval (distance) between the outermost pixel PX in the display area 10a of the first panel unit 1a and the outermost pixel PX in the display area 10a of the second panel unit 1b is narrowed so as to approach the pixel pitch. be able to. The pixel PX includes a red light emission sub-pixel R, a green light emission sub-pixel G, and a blue light emission sub-pixel B.

  As described above, according to the display device 100 in the present embodiment, since the width of the seam between the first panel unit 1a and the second panel unit 1b can be reduced, even if a plurality of panel units 1 are arranged. The seam is inconspicuous. Therefore, it is possible to realize a display device that can make the joint between panel units inconspicuous even if the definition is increased.

  Furthermore, in the display device 100 according to the present embodiment, the display panel 1 in the panel unit 1 is a second surface 20b that is an inclined surface that forms an obtuse angle with respect to the extraction region 10b that projects in the first direction. And is not bent to the side opposite to the side where the extraction region 10b is formed in the first direction.

  Thereby, it can avoid that the board | substrate of the display panel 10 is cracked, or electrode wiring peels or breaks.

  In the display device 100 according to the present embodiment, the peripheral region 10c located on the opposite side of the display region 10 from the pull-out region 10b is configured to protrude beyond the first surface 20a of the support substrate 20, and adjacent panels. The unit 1 is disposed so as to overlap the drawer area 10b of the display panel 10 and the peripheral area 10c on the drawer area 10b side.

  Thereby, since the width of the seam between the panel units 1 can be further reduced, the seam can be made less noticeable.

  In the panel unit 1 according to the present embodiment, the boundary portion between the first surface 20a and the second surface 20b of the support substrate 20 is configured to have a predetermined radius of curvature.

  Thereby, the drawer region 10b of the display panel 10 is bent by bending the drawer region 10b of the display panel 10 along the boundary portion (corner) between the first surface 20a and the second surface 20b of the support substrate 20. In addition, the radius of curvature of the bent portion can be defined, and the width of the peripheral region 10c can be controlled. Further, by setting the radius of curvature of the bent portion of the lead-out region 10b to a value at which the display panel 10 can be bent, it is possible to prevent the substrate of the display panel 10 from cracking or peeling or breakage of the electrode wiring. .

  In the panel unit 1 according to the present embodiment, the circuit board 60 is disposed between the support substrate 20 and the holding plate 30 so as to be covered by the support substrate 20 and in parallel with the support substrate 20 and the holding plate 30. Has been fixed.

  Thereby, the circuit board 60 does not contact the adjacent panel unit 1. Each panel unit 1 is compact and can be handled, driven, and controlled individually.

  Moreover, about the support substrate 20 in the panel unit 1 in this Embodiment, the 2nd surface 20b and the 3rd surface 20c which face are made into the plane.

  Thereby, in the two panel units 1 adjacent to each other in the first direction, the second surface 20b of the support substrate 20 of one panel unit 1 and the third surface 20c of the support substrate 20 of the other panel unit 1 are used. When the drawer area 10b of the display panel 10 is clamped, a force can be uniformly applied to the portion of the drawer area 10b to be clamped. Therefore, the drawer region 10b can be stably held and cracks and the like can be prevented from occurring in the drawer region 10b.

(Embodiment 2)
Next, Embodiment 2 will be described with reference to FIG. FIG. 7 is a side sectional view of a support substrate used in the panel unit and the display device according to the second embodiment. Note that the present embodiment has the same configuration as that of the first embodiment except for the support substrate.

  As shown in FIG. 7, the support substrate 20A in the present embodiment is a substrate having a rectangular shape in plan view and cross-section, and includes a first surface 20a, a second surface 20b, and a third surface 20c. And a fourth surface 20d. The first surface 20a and the fourth surface 20d are the same as those in the first embodiment. However, in the present embodiment, the second surface 20b and the third surface 20c are the first surface 20a and the fourth surface 20c. It is not inclined with respect to the surface 20d, and is substantially perpendicular to the first surface 20a and the fourth surface 20d.

  Further, the boundary portion between the first surface 20a and the second surface 20b, the boundary portion between the second surface 20b and the fourth surface 20d, the boundary portion between the fourth surface 20d and the third surface 20c, and The boundary portion between the third surface 20c and the first surface 20a is curved so as to have a predetermined radius of curvature. That is, the four corners of the support substrate 20A are rounded.

  Thereby, by bending the drawer region 10b of the display panel 10 shown in FIG. 2 along the corner of the support substrate 20A, the radius of curvature of the bent portion of the drawer region 10b of the display panel 10 can be defined, and The width of the peripheral region 10c of the display panel 10 can be controlled.

  Furthermore, the radius of curvature of the four corners of the support substrate 20A (the boundary between the surfaces) is larger than the radius of curvature of the display panel 10, and is set to a value that allows the display panel 10 to be bent. .

  Thereby, it can prevent that the board | substrate of the display panel 10 is cracked, or electrode wiring is peeled or damaged. In particular, a display panel is formed by rounding the boundary portion between the first surface 20a and the second surface 20b of the support substrate 20A and the boundary portion between the second surface 20b and the fourth surface 20d of the support substrate 20A. The crack of the board | substrate in 10 drawer | drawing-out area | region 10b can be prevented.

  Also in the present embodiment, a display device can be configured by arranging panel units using the support substrate 20A in a tile shape as in the first embodiment.

  Specifically, in two panel units adjacent in the first direction (the direction in which the drawer region 10b is pulled out), the first surface 20a of each support substrate 20A forms a single plane with each other, and The second surface 20b of the support substrate 20A of one panel unit and the third surface 20c of the support substrate 20A of the other panel unit are opposed to each other and overlap each other, and the display panel provided in one panel unit Ten drawer regions 10b are sandwiched between the second surface 20b of the support substrate 20A of the one panel unit and the third surface 20c of the support substrate 20A of the other panel unit.

  Thereby, also in the display apparatus in the present embodiment, the same effect as in the first embodiment can be obtained. For example, since the width of the joint between adjacent panel units can be narrowed, a large display device with no conspicuous seam can be realized.

  Also in the present embodiment, the peripheral region 10c located on the opposite side of the display region 10 from the pull-out region 10b is configured to protrude beyond the first surface 20a of the support substrate 20A, and the display panel of the adjacent panel unit It is preferable that the ten extraction regions 10b and the peripheral region 10c on the extraction region 10b side are overlapped with each other.

  Thereby, since the width | variety of the joint of panel units can be reduced further, a joint can be made further inconspicuous.

  Further, according to the panel unit in the present embodiment using the support substrate 20A, it is possible to remove only one panel unit even after a plurality of panel units are arranged to form a display device.

  Thereby, when it is necessary to replace one panel unit in the display device due to a failure or the like, only the panel unit to be replaced can be easily removed from the plurality of arranged panel units.

(Embodiment 3)
Next, Embodiment 3 will be described with reference to FIG. FIG. 8 is a side sectional view of a support substrate used in the panel unit and the display device according to the third embodiment. Note that the present embodiment has the same configuration as that of the first embodiment except for the support substrate.

  As shown in FIG. 8, the support substrate 20B in the present embodiment has a first surface 20a, a second surface 20b, a third surface 20c, and a fourth surface 20d. The first surface 20a and the fourth surface 20d are the same as those in the first embodiment, but in the present embodiment, the second surface 20b and the third surface 20c are curved surfaces having a predetermined radius of curvature. And are configured to fit together.

  Thereby, by bending the drawer region 10b of the display panel 10 shown in FIG. 2 along the second surface 20b of the support substrate 20B, the radius of curvature of the bent portion of the drawer region 10b of the display panel 10 can be defined. In addition, the width of the peripheral region 10c of the display panel 10 can be controlled.

  Further, the radius of curvature of the boundary portion between the first surface 20a and the second surface 20b and the boundary portion between the second surface 20b and the fourth surface 20d is larger than the radius of curvature of the display panel 10. The display panel 10 may be set to a value that can be bent. Specifically, these boundary portions may be rounded so as to have a radius of curvature larger than the radius of curvature of the display panel 10.

  Thereby, it can prevent that the board | substrate of the display panel 10 is cracked, or electrode wiring is peeled or damaged. In particular, it is possible to prevent the substrate from being cracked in the drawer region 10b of the display panel 10.

  Also in the present embodiment, a display device can be configured by arranging panel units using the support substrate 20B in a tile shape as in the first embodiment.

  Specifically, in two panel units adjacent to each other in the first direction (the direction in which the drawer region 10b is pulled out), the first surface 20a of each support substrate 20B forms one plane with each other, and The second surface 20b of the support substrate 20B of one panel unit and the third surface 20c of the support substrate 20B of the other panel unit are opposed to each other and overlap each other, and the display panel provided in one panel unit Ten drawer regions 10b are sandwiched between the second surface 20b of the support substrate 20B of the one panel unit and the third surface 20c of the support substrate 20B of the other panel unit.

  Thereby, also in the display apparatus in the present embodiment, the same effect as in the first embodiment can be obtained. For example, since the width of the joint between adjacent panel units can be narrowed, a large display device with no conspicuous seam can be realized.

  In the present embodiment, the curved surface shape of the second surface 20b of the support substrate 20B is a semicircular shape, but is not limited thereto. For example, the curved surface shape of the second surface 20b of the support substrate 20B may be a quarter circle shape or the like. Even in this case, the boundary between the first surface 20a and the second surface 20b of the support substrate 20B is rounded so as to have a radius of curvature larger than the radius of curvature of the display panel 10. It is good to be.

  The present invention can be applied to a panel unit or a display device. In particular, it is useful as a large display device configured by joining together a plurality of small panel units.

DESCRIPTION OF SYMBOLS 1,1001 Panel unit 1a 1st panel unit 1b 2nd panel unit 2 Fixing member 10, 1010 Display panel 10a, 1010a Display area 10b Extraction area 10c Peripheral area 10EL Organic EL element 11 1st board | substrate 12 1st electrode Wiring 13 Flattening layer 14 Second electrode wiring 15 Organic EL layer 16 Third electrode wiring 17 Sealing layer 18 Second substrate 19 Bank 20, 20A, 20B Support substrate 20a First surface 20b Second surface 20c Third surface 20d Fourth surface 21, 31, 61 Insertion hole 30 Holding plate 40 Flexible substrate 41 Driver IC
DESCRIPTION OF SYMBOLS 50 Flexible cable 60 Circuit board 70 Screw 71, 72 Nut 80 Spacer 100 Display apparatus 1000 Tiling display 1010b Overhang area

Claims (18)

A display device composed of a plurality of panel units,
Each of the plurality of panel units is
A display panel having a display area in which a plurality of pixels are formed and an extraction area in which electrode wiring is extracted from the display area in a first direction;
A support substrate for supporting the display panel,
The support substrate is parallel to the first surface on which the display area of the display panel is disposed, the second surface on which the lead-out area of the display panel is disposed, and the second surface ; And a third surface located on the opposite side of the second surface,
Among the plurality of panel units, in the first panel unit and the second panel unit arranged side by side in the first direction, the first of each of the first panel unit and the second panel unit. The first panel unit includes a first plane, and the first panel unit includes the second surface of the first panel unit and the third surface of the second panel unit that face each other and overlap each other. The display device, wherein the drawer area of the display panel is sandwiched between the second surface of the first panel unit and the third surface of the second panel unit. The display device according to claim 1, wherein the second surface is inclined so as to form an obtuse angle with respect to the first surface. The boundary portion between the first surface and the second surface, the display device according to claim 1 or 2 is curved so as to have a larger radius of curvature than耐曲radii of the display panel. Wherein the boundary portion between the third surface of said second surface a second panel unit of the first panel unit is curved to have a larger radius of curvature than耐曲radii of the display panel display device according to any one of claims 1 to 3, are. Each of the first panel unit and the second panel unit includes a holding plate,
The holding plate is disposed so as to be positioned on a fourth surface side on the back side of the first surface of the support substrate,
Wherein the extraction region of the display panel, the display device according to any one of the support according to claim wherein the fourth bent to a position opposite to the surface held on the holding plate of the substrate 1-4. The display device according to claim 5 , wherein the holding plate is arranged in parallel with the display area of the display panel. Each of the first panel unit and the second panel unit includes a circuit board electrically connected to the electrode wiring,
The display device according to claim 6 , wherein the circuit board is disposed in parallel with the display area of the display panel on the fourth surface side of the support substrate. Each of the first panel unit and the second panel unit includes a flexible substrate connected to the drawer region of the display panel,
The flexible substrate is provided with a driver IC,
The display device according to claim 7 , wherein the flexible substrate is in contact with the holding plate. The display device according to claim 8 , wherein the holding plate is made of a material having high thermal conductivity. The circuit board, a display device according to any one of the supporting substrate and the holding plates claim 7 which is installed to 1-9. The circuit board, a display device according to any one of claims 7 to 10 which is arranged so as to be covered in the support substrate. The display device according to any one of claims 5 to 11 , wherein the holding plate holds the drawer region so as to sandwich the drawer region of the display panel. A portion of the lead-out region of the display panel that is bent from the support substrate to a portion that is held by the holding plate is curved so as to have a radius of curvature larger than the radius of curvature of the display panel. Item 13. The display device according to any one of Items 5 to 12 . The second surface and the third surface is a display device according to any one of claims 1 to 13 which is a plane. The second surface and the third surface is a display device according to any one of claims 1 to 13, which is a curved surface which mate with each other. The display panel display device according to any one of claims 1 to 15 fixed by the adhesive layer disposed on a surface of the supporting substrate. The display panel display device according to any one of constituted claims 1-16 with a substrate made of a flexible material. A panel unit that constitutes a display device by being arranged in a plurality,
The panel unit is
A display panel having a display area in which a plurality of pixels are formed and an extraction area in which electrode wiring is extracted from the display area in a first direction;
A support substrate for supporting the display panel,
The supporting substrate includes a first surface portion corresponding to the display area of the display panel is disposed, and a second surface, wherein the portions corresponding to the extraction region of the display panel is disposed, said second And a third surface that is parallel to the second surface and located on the opposite side of the second surface.

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