WO2022255175A1 - Display device and method for manufacturing same - Google Patents

Display device and method for manufacturing same Download PDF

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Publication number
WO2022255175A1
WO2022255175A1 PCT/JP2022/021323 JP2022021323W WO2022255175A1 WO 2022255175 A1 WO2022255175 A1 WO 2022255175A1 JP 2022021323 W JP2022021323 W JP 2022021323W WO 2022255175 A1 WO2022255175 A1 WO 2022255175A1
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WO
WIPO (PCT)
Prior art keywords
light
display device
substrate
light guide
light emitting
Prior art date
Application number
PCT/JP2022/021323
Other languages
French (fr)
Japanese (ja)
Inventor
敬錫 宋
哲洋 坂本
一郎 森
暁 大前
隆介 淺井
Original Assignee
ソニーグループ株式会社
ソニーセミコンダクタソリューションズ株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ソニーグループ株式会社, ソニーセミコンダクタソリューションズ株式会社 filed Critical ソニーグループ株式会社
Priority to JP2023525748A priority Critical patent/JPWO2022255175A1/ja
Publication of WO2022255175A1 publication Critical patent/WO2022255175A1/en

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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F13/00—Illuminated signs; Luminous advertising
    • G09F13/04—Signs, boards or panels, illuminated from behind the insignia
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F13/00—Illuminated signs; Luminous advertising
    • G09F13/04—Signs, boards or panels, illuminated from behind the insignia
    • G09F13/08—Signs, boards or panels, illuminated from behind the insignia using both translucent and non-translucent layers

Definitions

  • the present technology relates to a display device and a manufacturing method thereof, and more particularly to a display device and a manufacturing method thereof that can provide a display device that does not require alignment with a light-emitting portion when bonding a decorative layer.
  • Patent Literature 1 discloses a display device that presents predetermined video information during display, and visually recognizes a predetermined design by a decorative film or the like attached to the display surface during non-display.
  • the present technology has been developed in view of such circumstances, and makes it possible to provide a display device that does not require alignment with the light-emitting portion when attaching the decorative layer.
  • a display device includes a substrate, a plurality of light emitting units mounted on the substrate, and a decorative layer formed on the substrate other than a region where the light emitting units are mounted.
  • the light emitting part has a light guide part formed such that the area of the bottom part, which is the connection surface with the substrate, is larger than the area of the upper part, which is the light exit port.
  • a substrate, a plurality of light emitting units mounted on the substrate, and a decorative layer formed on the substrate other than a region where the light emitting units are mounted are provided.
  • the light-emitting part is provided with a light-guiding part formed so that the area of the bottom, which is the connection surface with the substrate, is larger than the area of the upper part, which is the light exit port.
  • a method for manufacturing a display device includes: mounting a plurality of light emitting units on a substrate at a predetermined arrangement pitch; and the decorative layer.
  • a plurality of light-emitting units are mounted on a substrate at a predetermined arrangement pitch, and light guide portions of the light-emitting units are passed through the decorative layer to connect the substrate and the decorative layer. are pasted together.
  • the display device may be an independent device, or may be an internal block that constitutes one device.
  • FIG. 1 is a cross-sectional view showing a configuration example of an embodiment of a display device according to the present disclosure
  • FIG. It is the top view which looked at the light emission part from the upper side of a board
  • FIG. 10 is a cross-sectional view for explaining another configuration example of the light emitting unit;
  • FIG. 4 is a diagram illustrating a method for manufacturing a display device according to the present disclosure; It is a figure explaining the other method of bonding a decoration layer and a board
  • FIG. 4 is a cross-sectional view of the periphery of the light emitting portion after passing through the light guide portion;
  • FIG. 10 is a perspective external view showing another embodiment of a display device according to the present disclosure; It is a figure explaining an example of use of a display concerning this indication. It is a figure explaining an example of use of a display concerning this indication. It is a figure explaining an example of use of a display concerning this indication. It is a figure explaining an example of use of a display concerning this indication.
  • FIG. 1 is a cross-sectional view showing a configuration example of one embodiment of a display device according to the present disclosure.
  • the display device 1 in FIG. 1 is a device capable of displaying predetermined information by video when emitting light, and allowing a predetermined design to be visually recognized when not emitting light.
  • the display device 1 includes a substrate 11, a plurality of light emitting units 12 mounted on the substrate 11 at a predetermined arrangement pitch P1, and a decorative layer formed on the substrate 11 other than the area where the light emitting units 12 are mounted. 13.
  • the substrate 11 is composed of, for example, a glass epoxy substrate, a glass polyimide substrate, or the like, and the substrate 11 is provided with control signal wiring for controlling the light emission of the light emitting section 12, a control circuit, and the like.
  • the light emitting section 12 includes a light source 21 and a light guiding section 22 formed therearound.
  • the light source 21 includes, for example, a light emitting element that emits red light, a light emitting element that emits green light, and a light emitting element that emits blue light, and each light emitting element is configured by, for example, a light emitting diode (LED).
  • LED light emitting diode
  • the size (for example, chip size) of the light emitting part 12 is not particularly limited, it is formed with a size of, for example, 1 mm 2 or less, or, for example, 0.3 mm 2 or less, or, for example, 0.1 mm 2 or less, and is used as a minute light source. .
  • the number of light emitting elements for emitting red, green, and blue light in the light emitting section 12 may not be one each, but may be plural. Also, the number of light-emitting elements may differ depending on the color of light emitted. Furthermore, some or all of the light emitting units 12 may be provided with a light emitting element that emits white light, or a light emitting element that emits yellow, cyan, or magenta light. Arrangement of a plurality of light emitting elements which constitute light source 21 is also arbitrary.
  • the light guide part 22 is formed in a region including the emission direction of the light emitted by the light source 21 (the region indicated by the dashed-dotted line in FIG. 1) and its surroundings, for example, using molding resin such as epoxy resin or silicone resin.
  • the area 31 of the bottom portion S1, which is the connection surface with the substrate 11 is larger than the area 32 of the top portion S2, which is the light exit port, and the area 32 increases from the top portion S2 toward the bottom portion S1.
  • the side wall has a tapered shape (inclined shape) that expands outward.
  • the size of the upper portion S2 serving as the light exit port is preferably (upper portion The size of S2)> ⁇ (size of light source 21)+2*TK*tan ⁇ , that is, ⁇ (size of light source 21)+2*TK*tan ⁇ is formed to be smaller than the size of upper portion S2.
  • the spread angle ⁇ of the light source 21 is, for example, about 45° for general light emitting diodes, and is even smaller for narrow light distribution light emitting diodes.
  • the arrangement pitch P1 which is the interval in the first direction (for example, the X direction) between the plurality of light emitting units 12 (light sources 21) mounted on the substrate 11, is a predetermined value in the range of 0.1 mm to 10 mm, for example, 1 .26 mm.
  • An arrangement pitch P2 (not shown) of the substrates 11 in a second direction (for example, the Y direction) orthogonal to the first direction may be matched with or different from the arrangement pitch P1 in the first direction.
  • the arrangement pitches P1 and P2 can be appropriately determined according to the resolution, the size of the light emitting section 12, the required brightness during light emission, the viewing distance, and the like.
  • FIG. 2A to 2C are plan views of the light emitting section 12 viewed from above the substrate 11.
  • FIG. 2A to 2C are plan views of the light emitting section 12 viewed from above the substrate 11.
  • the planar shape of the light guide part 22 can be circular, for example, as shown in A of FIG. Further, for example, when the planar shape of the light source 21 is rectangular, the planar shape of the light guide section 22 may be elliptical or rectangular as shown in B or C of FIG. 2 . Of course, the planar shape of the light guide portion 22 can also be square.
  • the diameter (width) of the bottom portion S1 on the substrate side of the light guide portion 22 may be equal to or greater than the diameter (width) of the upper portion S2 and equal to or less than the arrangement pitch P1.
  • the diameter (width) of the upper portion S2, which is the light exit port of the light guide portion 22, is greater than or equal to the diameter (width) of the light source 21 and less than or equal to 30% of the arrangement pitch P1. It is preferable that the light transmittance of the light guide section 22 is, for example, 80% or more.
  • the decorative layer 13 includes, for example, fabric (cloth, fiber), leather, veneer such as wood grain, wallpaper (including uneven texture materials such as plaster), painting, and design layer. It is composed of a film, a film coated with a metal thin film, or the like.
  • the decorative layer 13 allows an observer to visually recognize a predetermined design when the light emitting section 12 is not lit.
  • the decorative layer 13 provides the observer with a predetermined texture and feel due to the thickness and unevenness of the decorative layer 13 . Patterns including pictures, characters, logos, symbols, signs, marks, emblems, designs, and the like may be formed on the decorative layer 13 .
  • the thickness TK of the decorative layer 13 varies depending on the material.
  • the thickness is assumed to be approximately 100 to 5000 ⁇ m, for example.
  • the thickness is assumed to be about 500 to 2000 ⁇ m, for example.
  • the thickness is assumed to be about 500 to 3000 ⁇ m, for example.
  • the thickness is assumed to be approximately 50 to 500 ⁇ m, for example.
  • the decorative layer 13 is adhered to the substrate 11, but it is also possible to peel it off from the substrate 11 and attach it to a new decorative layer 13 with a different design, for example.
  • the height of the light emitting part 12 (the distance from the bottom part S1 to the top part S2) is formed according to the thickness of the decorative layer 13.
  • the display surface of the display device 1 visually recognized by the observer is the upper portion S2 of the light guide portion 22 or the decorative layer 13.
  • the area occupied by the upper portion S2 of the light guide portion 22 is It is preferable to make it 20% or less of the area occupied. Thereby, the decorative layer 13 can be visually recognized more naturally.
  • the side wall of the light guide portion 22 has a tapered shape that expands outward from the top portion S2 toward the bottom portion S1.
  • the three-dimensional shape of the light guide portion 22 is formed into a projection shape in which the top portion S2, which is the tip portion, is smaller than the bottom portion S1. It is not necessary to provide openings (holes) in advance at the positions of the light emitting portions 12 of the decorative layer 13 .
  • the three-dimensional shape of the light guide portion 22 is formed into a projection shape in which the top portion S2, which is the tip portion, is smaller than the bottom portion S1. It has the function of reinforcing the root.
  • the reinforcing portion at the base of the light guide portion 22 prevents the light emitting portion 12 from breaking (falling down) or the like when the decorative layer 13 is adhered to the substrate 11 .
  • FIG. 3 parts corresponding to those shown in FIG. 1 are denoted by the same reference numerals, and description of those parts will be omitted as appropriate.
  • FIG. 3A to 3C are cross-sectional views showing other shape examples of the light guide portion 22.
  • FIG. 3A to 3C are cross-sectional views showing other shape examples of the light guide portion 22.
  • the cross-sectional shape of the light guide portion 22 has a tapered shape that increases from the top portion S2 toward the bottom portion S1.
  • the three-dimensional shape of the light guide portion 22 is not limited to the tapered shape.
  • the light guide portion 22 is formed in a cylindrical shape having a first diameter D1 on the base side of the bottom portion S1 side of the light guide portion 22, and a first diameter on the tip side of the top portion S2 side. 2 may be formed in a cylindrical shape with a diameter D2 ( ⁇ D1), and the top portion S2 may be smaller than the bottom portion S1.
  • the light guide portion 22 has a tapered shape in which the tip portion including the top portion S2 expands outward toward the bottom portion S1, and the tapered shape flattened from the middle height.
  • a cylindrical shape or prismatic shape with a plane area larger than the area may be used.
  • the light guide portion 22 may have a shape in which the side walls widen stepwise from the top portion S2 of the light guide portion 22 toward the bottom portion S1.
  • the light guide portion 22 includes a tip portion including an upper portion S2 having a smaller diameter (width) in the plane direction, and a bottom portion S1 having a larger diameter (width) in the plane direction than the tip portion. It can be divided into root and root.
  • the tip portion functions as a penetration assisting portion that facilitates penetration through the decorative layer 13
  • the root portion functions as a reinforcing portion that provides resistance to bending of the projection-shaped light guide portion 22 .
  • FIG. 4A to 4C show other configuration examples of the light emitting unit 12.
  • FIG. 4A to 4C show other configuration examples of the light emitting unit 12.
  • FIG. 4A shows a first modified example of the light emitting section 12.
  • the light emitting section 12 shown in FIG. 4A further includes a light distribution control section 41 and a light reflecting section 42 or an intensity enhancing section 43 in addition to the configuration of the light emitting section 12 shown in FIG.
  • the light distribution control section 41 is provided in the upper portion S2, which is the light exit port of the light guide section 22, and has the function of expanding the light emitted from the light exit port.
  • the light distribution control unit 41 is composed of, for example, an uneven structure that repeats at a period equal to or shorter than the wavelength of visible light, or an uneven structure that is randomly formed.
  • the light distribution control section 41 may be formed with a structure in which fine particles having different refractive indices are dispersed.
  • the viewing angle of the display device 1 can be improved by scattering the light emitted from the light source 21 by the light distribution control section 41 .
  • the light reflecting portion 42 is formed by forming a predetermined film on the tapered side wall and the bottom portion S1 of the light guide portion 22, and reflects the light emitted from the light source 21 so that it is emitted from the upper portion S2 of the light guide portion 22.
  • the light reflecting portion 42 is composed of, for example, a metal film, a dielectric multilayer film, a film having a high refractive index (high refractive index film), or the like.
  • the light reflection part 42 can improve the extraction efficiency of the light emitted from the light source 21 .
  • the strength reinforcing portion 43 is formed by forming a predetermined film on the tapered side wall and bottom portion S1 of the light guide portion 22, and reinforces the light guide portion 22 by coating the surface of the light guide portion 22.
  • the strength reinforcing portion 43 is composed of, for example, an inorganic insulating film, a metal film, a hard resin film, or the like. By providing the strength reinforcing portion 43, the scratch resistance of the surface of the light guide portion 22 can be improved.
  • the tapered side wall and bottom portion S1 of the light guide portion 22 may be coated with a film specialized for either the light reflecting portion 42 or the strength enhancing portion 43, or the light reflecting portion 42 or the strength enhancing portion 43 may be formed.
  • a coating having both functions may be formed.
  • FIG. 4B shows a second modified example of the light emitting section 12.
  • the light emitting section 12 shown in FIG. 4B has a configuration in which a part of the light guide section 22 is further provided with a high refractive index layer 45 as a condensing optical system.
  • the configuration other than the high refractive index layer 45 is the same as that of the light emitting section 12 shown in FIG.
  • a high refractive index layer 45 having a higher refractive index than the mold resin surrounding the light guide portion 22 is formed in the light emitting direction (forward) of the light source 21 .
  • the high refractive index layer 45 may be a resin having a higher refractive index than the molding resin around the light guide section 22, or may be an optical fiber or the like. Due to the difference in refractive index between the high refractive index layer 45 and the surrounding resin layer, the light emitted from the light source 21 is totally reflected by the high refractive index layer 45, so that the light from the light source 21 is efficiently directed forward. can be output.
  • FIG. 4C shows a third modified example of the light emitting section 12.
  • the light emitting section 12 shown in FIG. 4C further includes a reflecting plate (mirror) 46 as a condensing optical system within the light guiding section 22 .
  • the configuration other than the reflector 46 is the same as that of the light emitting section 12 shown in FIG.
  • a substantially hemispherical reflecting plate 46 is formed in the light guide section 22 so as to surround the light source 21 and the light emitting direction (forward).
  • the reflector 46 is configured by, for example, a metal plate or a resin plate having a metal film formed on the surface thereof. Since the light emitted from the light source 21 is totally reflected by the reflector 46, the light from the light source 21 can be efficiently output forward.
  • FIG. 4A to 4C has a configuration of the light emitting unit 12 shown in FIG. 46 is further added, it goes without saying that it can be similarly added to the light guide portions 22 having the shapes shown in FIGS. 3A to 3C. Also, the planar shape of the light guide portion 22 can be similarly applied even if it is any shape of A to C in FIG. 2 .
  • a plurality of light distribution control portions 41, light reflecting portions 42, strength enhancing portions 43, high refractive index layers 45, and reflecting plates 46 shown in FIGS. 4A to 4C may be appropriately combined and arranged.
  • the light source 21 is mounted at a predetermined position on the substrate 11 as shown in FIG. 5A.
  • FIG. 5 is a diagram focusing on one light source 21, but in reality, as described above, a plurality of light sources 21 are mounted on the substrate 11 at a predetermined arrangement pitch P1 or P2.
  • a light guide portion 22 is formed around the light source 21 using, for example, epoxy resin.
  • the light guide portion 22 is molded, for example, in a tapered shape in which side walls widen outward from the top portion S2 toward the bottom portion S1.
  • the light emitting portion 12 is completed.
  • the light reflecting portion 42 and the strength enhancing portion 43 the light reflecting portion 42 and the strength enhancing portion are formed on the upper surface of the substrate 11 before the light guide portion 22 is formed and on the side wall after the light guide portion 22 is formed. 43 are formed.
  • the light distribution control part 41 after the light guide part 22 is formed, the light distribution control part 41 is formed in the upper part S2.
  • the decoration layer 13 is attached to the upper surface of the substrate 11 by mechanically pressing the decoration layer 13 against the substrate 11 with a member such as a roller 51 .
  • An adhesive layer is provided on at least one or both of the rear surface of the decorative layer 13 (lower surface on the substrate 11 side) and the upper surface of the substrate 11 .
  • the decoration layer 13 before bonding is not particularly provided with openings (holes).
  • the cross-sectional structure shown in FIG. 1 is completed through the decorative layer 13 .
  • the adhesive strength between the back surface of the decorative layer 13 and the top surface of the substrate 11 is set to a level that allows them to be peeled off, and the decorative layer 13 can be replaced.
  • the decorative layer 13 and the substrate 11 are bonded together by applying pressure from the upper side to the lower side with hot air from a dryer 52, or as shown in B of FIG.
  • a method of bonding the decorative layer 13 and the substrate 11 together by vacuum suction between the layer 13 and the substrate 11 can be employed.
  • FIG. 6C a method is adopted in which the decorative layer 13 and the substrate 11 are bonded together by a magnet 53N adhered to the decorative layer 13 and a magnet 53S adhered to the substrate 11. good too.
  • the arrangement density of the magnets 53N and 53S can be made less dense than the arrangement density of the light sources 21.
  • FIG. That is, the arrangement pitch of the magnets 53N and 53S in the planar direction can be set larger than the arrangement pitch P1 or P2 of the light source 21.
  • the decoration layer 13 and the substrate 11 are bonded together by pressing the decoration layer 13 from the upper side toward the substrate 11 with a jig 54 having a concave portion corresponding to the light emitting portion 12 .
  • the light guide portion 22 is formed after the light source 21 is mounted on the substrate 11.
  • the light emitting portion 12 in which the light guide portion 22 is integrally packaged with the light source 21 is used.
  • a surface-mounted light-emitting diode (LED) generally called an SMD (Surface Mount Device) corresponds to such a packaged light-emitting unit 12 .
  • FIG. 8 is a diagram explaining a method of manufacturing the display device 1 when using the light emitting section 12 in which the light source 21 and the light guide section 22 are integrally packaged.
  • the packaged light-emitting portion 12 is mounted at a predetermined position on the substrate 11 .
  • the arrangement pitch P1 or P2 of the light emitting units 12 is the same as in the manufacturing method described above.
  • the decoration layer 13 is attached to the upper surface of the substrate 11 by mechanically pressing the decoration layer 13 against the substrate 11 with a member such as a roller 51.
  • the decoration layer 13 before bonding is not particularly provided with openings (holes).
  • the decoration layer 13 is penetrated, and the cross-sectional structure shown in FIG. 1 is completed.
  • the process of forming the light guide part 22 can be omitted, so the display device 1 can be manufactured more easily.
  • the decoration layer 13 before bonding is not provided with an opening at the position of the light-emitting part 12 after bonding, and the decoration layer 13 is bonded to the light-emitting portion 12 so that the light-emitting portion 12 is guided.
  • the display device 1 having a structure in which the light emitting sections 12 are arranged at a predetermined arrangement pitch P1 or P2 with respect to the decorating layer 13 is manufactured by having the light sections 22 pass through the decorating layer 13 .
  • the decorative layer 13 does not need to have openings in advance at positions where the light-emitting portions 12 are inserted, the decorative layer 13 does not need to be processed specifically for the display device 1 . Since the decoration layer 13 does not need to be processed in advance, a general decoration material can be used as the decoration layer 13, and the display device 1 can be realized at low cost.
  • the decorative layer 13 since the decorative layer 13 has no openings, it is not necessary to align it with the light-emitting part 12, so that it can be easily attached.
  • an opening is provided in the decorative layer 13 corresponding to the position of the light-emitting portion 12 and the decorative layer 13 is adhered to the substrate 11 while aligning the position, even if misalignment occurs, , there is a portion that blocks the light from the light source 21, resulting in a narrow viewing angle. In order to prevent deterioration of the viewing angle, the natural visibility of the decorative layer 13 is impaired if the opening is formed with a large margin.
  • the decoration layer 13 does not have an opening in advance, and the opening is formed in the decoration layer 13 by penetrating the light guide part 22 through the decoration layer 13 . Since there is no opening margin for the size of the light emitting part 12, the area ratio of the light emitting part 12 to the display surface of the display device 1 can be reduced, and the visibility of the decorative layer 13 can be improved.
  • the decorative layer 13 does not have a pre-opening portion, when the periphery of the light emitting portion 12 penetrating the decorative layer 13 is enlarged, as shown in FIG.
  • the periphery of the light guide section 22 is covered with the edge (cut) turned up.
  • the deformed portion of the decorative layer 13 around the light guide portion 22 that is turned up also functions as a protective portion that protects the periphery of the light guide portion 22 protruding from the decorative layer 13 .
  • the decoration layer 13 was not provided with an opening in advance, but an opening corresponding to the size of the light emitting unit 12, specifically, the size of the light emitting unit 12 (for example, the upper part S2 size), but there may be smaller openings.
  • small holes about 1/2 to 1/10 the size of the light-emitting portion 12 may be provided at a uniform pitch as a penetration assisting portion that assists penetration.
  • the presence of the penetration assisting portion can have the effect of facilitating the penetration of the light guide portion 22 when the decorative layer 13 is adhered.
  • the penetration assisting portion may be a recess, a cross-shaped notch, or the like, instead of an opening (hole).
  • FIG. 10 is a perspective external view showing another embodiment of the display device according to the present disclosure.
  • the display device 1 shown in FIG. 1 can be formed by itself to have a large display size, but as shown in FIG. However, by arranging a plurality of small display devices 1 in a two-dimensional matrix, the display device 100 having a large display size may be realized.
  • the display device 100 in FIG. 10 is configured by arranging a plurality of display devices 1 in FIG. 1 in a two-dimensional matrix as display device units.
  • the display device 100 is configured by arranging a plurality of display devices 1 in a tile shape, and displays one image. Each display device 1 displays part of one image in cooperation with other display devices 1 arranged in plurality.
  • the boundaries between the tiled display devices 1 are shown for convenience, but the boundaries are actually arranged adjacent to each other to the extent that they cannot be visually recognized.
  • the front of the display device 100 is the display surface to which the decorative layer 13 is attached, and when the plurality of light emitting units 12 mounted at a predetermined arrangement pitch emit light, predetermined information is displayed in the form of images. be done. On the other hand, when the plurality of light-emitting portions 12 do not emit light, the display device 100 allows the predetermined design by the decorative layer 13 to be visually recognized.
  • the display device 1 or 100 can be installed as a spatial display on walls, ceilings, floors, etc. of buildings, company entrances, luxury hotels, restaurants, and residences.
  • the display device 100 is installed on the wall surface of the living room.
  • the design of the wall by the decorative layer 13 is visually recognized, and when emitting light, the scenery of the seaside of Hawaii is displayed on the entire wall. or the image of the conference room of the other party is displayed.
  • the display device 100 may be installed on the wall of the living room like a painting or an interior board.
  • the display device 100 is hung on the wall side by side with the painting 111 .
  • the display device 1 or 100 can be installed, for example, as a part of a facility, an object, or the like in an amusement park facility, an object, an art museum, or the like. It may be applied to objects such as sculptures, or may be applied to a combination of optical camouflage and objects.
  • the entire wall surface surrounding the indoor space is composed of the display device 100, and a sense of realism can be produced as if the room is warped to another world when the light is emitted from the room when the light is not emitted.
  • the display device 1 or 100 can be applied, for example, to decorations such as events such as animation events, stage sets for concerts or plays, and entrances and booths of exhibitions.
  • the display device 1 or 100 can be installed, for example, in an arbitrary area such as the dashboard, ceiling, door, pillar, and seat back of a vehicle such as an automobile.
  • FIG. 13 shows an example in which the display device 100 is applied to the dashboard of an automobile.
  • the display device 100 can be arranged on the pillar of the automobile, and the display device 100 can be configured to display an image in the line-of-sight direction of the pillar from the driver. In this case, blind spots can be eliminated without disturbing the design of the interior space of the vehicle.
  • the display device 1 or 100 can be applied to, for example, portable information devices such as smart phones and smart watches, and home electric appliances such as refrigerators and air conditioners.
  • Embodiments of the present technology are not limited to the above-described embodiments, and various modifications are possible without departing from the gist of the present technology.
  • the technology according to the present disclosure can have the following configurations.
  • the light distribution control section is configured by dispersing fine particles having different refractive indices.
  • the light guide section includes a light reflection section that reflects light emitted from a light source.
  • the light reflecting portion is composed of a metal film, a dielectric multilayer film, or a high refractive index film.
  • the light guide section includes a strength reinforcing section that reinforces the light guide section.
  • the display device (8) The display device according to (7), wherein the strength reinforcing portion is composed of an inorganic insulating film, a metal film, or a resin film.
  • the light guide section according to any one of (1) to (4) above, which includes a coating that serves both as a light reflection section that reflects light emitted from a light source and as a strength reinforcing section that reinforces the light guide section. display device.
  • the display device according to (10), wherein the condensing optical system is composed of a high refractive index layer.
  • the display device according to any one of (1) to (10), wherein the decorative layer includes a penetration assisting portion that assists penetration of the light guide portion when the decorative layer is attached to the substrate.
  • the decorative layer includes a protective portion that protects the periphery of the light guide portion.
  • the three-dimensional shape of the light guide portion is a projection shape whose tip portion is smaller than the bottom portion.
  • the light guide section has a tapered side wall that expands outward from the top toward the bottom.

Abstract

The present technology relates to a display device and a method for manufacturing the same with which it is possible to provide a display device that does not require alignment with a light emitting unit when bonding a decorative layer. This display device comprises a substrate, a plurality of light emitting units mounted on the substrate, and a decorative layer formed in a region on the substrate other than a region where the light emitting units are mounted, wherein the light emitting units have a light guide part formed such that the area of a bottom thereof, which is a connection surface with the substrate, is greater than the area of a top thereof, which is a light emission port. The present technology can be applied to a display device or the like installed as a spatial display on the wall, ceiling, floor, etc., of a company entrance, luxury hotel, restaurant, dwelling, and the like, for example.

Description

表示装置およびその製造方法Display device and manufacturing method thereof
　本技術は、表示装置およびその製造方法に関し、特に加飾層を貼り合わせる際の発光部との位置合わせを不要とする表示装置を提供できるようにした表示装置およびその製造方法に関する。 The present technology relates to a display device and a manufacturing method thereof, and more particularly to a display device and a manufacturing method thereof that can provide a display device that does not require alignment with a light-emitting portion when bonding a decorative layer.
　近年、非表示時には所定の絵柄や文字等の意匠を視認させることができる表示装置が提案されている。例えば、特許文献１には、表示時には所定の映像情報を提示し、非表示時には、表示面に貼り付けられた加飾フィルム等による所定の意匠を視認させる表示装置が開示されている。 In recent years, display devices have been proposed that allow users to visually recognize designs such as predetermined patterns and characters when not displaying. For example, Patent Literature 1 discloses a display device that presents predetermined video information during display, and visually recognizes a predetermined design by a decorative film or the like attached to the display surface during non-display.
特開２０２０－０６７５６４号公報JP 2020-067564 A
　特許文献１に開示の技術は、発光部からの光の通り道である透光部を形成したあと、加飾フィルムを形成するため、発光部が形成された基板と貼り合わせる際に、透光部と発光部との位置合わせが必要となる。 In the technology disclosed in Patent Document 1, since the decorative film is formed after forming the light-transmitting portion, which is the passage of light from the light-emitting portion, when the light-transmitting portion is attached to the substrate on which the light-emitting portion is formed, the light-transmitting portion is formed. and the light-emitting portion need to be aligned.
　本技術は、このような状況に鑑みてなされたものであり、加飾層を貼り合わせる際の発光部との位置合わせを不要とする表示装置を提供できるようにするものである。 The present technology has been developed in view of such circumstances, and makes it possible to provide a display device that does not require alignment with the light-emitting portion when attaching the decorative layer.
　本技術の第１の側面の表示装置は、基板と、前記基板上に実装された複数の発光部と、前記発光部が実装された領域以外の前記基板上に形成された加飾層とを備え、前記発光部は、前記基板との接続面である底部の面積が、光出射口となる上部の面積よりも大きく形成された導光部を有する。 A display device according to a first aspect of the present technology includes a substrate, a plurality of light emitting units mounted on the substrate, and a decorative layer formed on the substrate other than a region where the light emitting units are mounted. The light emitting part has a light guide part formed such that the area of the bottom part, which is the connection surface with the substrate, is larger than the area of the upper part, which is the light exit port.
　本技術の第１の側面においては、基板と、前記基板上に実装された複数の発光部と、前記発光部が実装された領域以外の前記基板上に形成された加飾層とが設けられ、前記発光部には、前記基板との接続面である底部の面積が、光出射口となる上部の面積よりも大きく形成された導光部が設けられている。 In a first aspect of the present technology, a substrate, a plurality of light emitting units mounted on the substrate, and a decorative layer formed on the substrate other than a region where the light emitting units are mounted are provided. The light-emitting part is provided with a light-guiding part formed so that the area of the bottom, which is the connection surface with the substrate, is larger than the area of the upper part, which is the light exit port.
　本技術の第２の側面の表示装置の製造方法は、基板上に複数の発光部を所定の配置ピッチで実装し、前記発光部の導光部を前記加飾層から貫通させて、前記基板と加飾層とを貼り合わせる。 A method for manufacturing a display device according to a second aspect of the present technology includes: mounting a plurality of light emitting units on a substrate at a predetermined arrangement pitch; and the decorative layer.
　本技術の第２の側面においては、基板上に複数の発光部が所定の配置ピッチで実装され、前記発光部の導光部が前記加飾層から貫通されて、前記基板と加飾層とが貼り合わされる。 In a second aspect of the present technology, a plurality of light-emitting units are mounted on a substrate at a predetermined arrangement pitch, and light guide portions of the light-emitting units are passed through the decorative layer to connect the substrate and the decorative layer. are pasted together.
　表示装置は、独立した装置であっても良いし、１つの装置を構成している内部ブロックであっても良い。 The display device may be an independent device, or may be an internal block that constitutes one device.
本開示に係る表示装置の一実施の形態の構成例を示す断面図である。1 is a cross-sectional view showing a configuration example of an embodiment of a display device according to the present disclosure; FIG. 基板の上側から発光部をみた平面図である。It is the top view which looked at the light emission part from the upper side of a board|substrate. 導光部のその他の形状例を説明する断面図である。It is a sectional view explaining other examples of shape of a light guide. 発光部のその他の構成例を説明する断面図である。FIG. 10 is a cross-sectional view for explaining another configuration example of the light emitting unit; 本開示に係る表示装置の製造方法を説明する図である。FIG. 4 is a diagram illustrating a method for manufacturing a display device according to the present disclosure; 加飾層と基板の貼り合わせのその他の方法を説明する図である。It is a figure explaining the other method of bonding a decoration layer and a board|substrate together. 加飾層と基板の貼り合わせのその他の方法を説明する図である。It is a figure explaining the other method of bonding a decoration layer and a board|substrate together. パッケージ化された発光部を用いる場合の表示装置の製造方法を説明する図である。It is a figure explaining the manufacturing method of the display apparatus in the case of using a packaged light-emitting part. 導光部貫通後の発光部周辺の断面図である。FIG. 4 is a cross-sectional view of the periphery of the light emitting portion after passing through the light guide portion; 本開示に係る表示装置のその他の実施の形態を示す斜視外観図である。FIG. 10 is a perspective external view showing another embodiment of a display device according to the present disclosure; 本開示に係る表示装置の用途例を説明する図である。It is a figure explaining an example of use of a display concerning this indication. 本開示に係る表示装置の用途例を説明する図である。It is a figure explaining an example of use of a display concerning this indication. 本開示に係る表示装置の用途例を説明する図である。It is a figure explaining an example of use of a display concerning this indication.
　以下、添付図面を参照しながら、本開示の技術を実施するための形態（以下、実施の形態という）について説明する。なお、本明細書及び図面において、実質的に同一の機能構成を有する構成要素については、同一の符号を付することにより重複説明を省略する。説明は以下の順序で行う。
１．表示装置の構成例
２．発光部の他の構成例
３．表示装置の製造方法
４．表示装置のユニット構成例
５．表示装置の用途例 Hereinafter, modes for implementing the technology of the present disclosure (hereinafter referred to as embodiments) will be described with reference to the accompanying drawings. In the present specification and drawings, constituent elements having substantially the same functional configuration are denoted by the same reference numerals, thereby omitting redundant description. The explanation is given in the following order.
1. Configuration example of display device 2. 3. Another configuration example of the light emitting unit. 4. Manufacturing method of display device. Unit configuration example of display device5. Application examples of display devices
＜１．表示装置の構成例＞
　図１は、本開示に係る表示装置の一実施の形態の構成例を示す断面図である。 <1. Configuration example of display device>
FIG. 1 is a cross-sectional view showing a configuration example of one embodiment of a display device according to the present disclosure.
　図１の表示装置１は、発光時には映像による所定の情報表示ができ、非発光時には所定の意匠を視認させることができる装置である。 The display device 1 in FIG. 1 is a device capable of displaying predetermined information by video when emitting light, and allowing a predetermined design to be visually recognized when not emitting light.
　表示装置１は、基板１１と、その基板１１上に所定の配置ピッチP1で実装された複数の発光部１２と、発光部１２が実装された領域以外の基板１１上に形成された加飾層１３とを含んで構成されている。 The display device 1 includes a substrate 11, a plurality of light emitting units 12 mounted on the substrate 11 at a predetermined arrangement pitch P1, and a decorative layer formed on the substrate 11 other than the area where the light emitting units 12 are mounted. 13.
　基板１１は、例えば、ガラスエポキシ基板、ガラスポリイミド基板等で構成され、基板１１には、発光部１２の発光を制御する制御信号の配線と制御回路等が形成されている。 The substrate 11 is composed of, for example, a glass epoxy substrate, a glass polyimide substrate, or the like, and the substrate 11 is provided with control signal wiring for controlling the light emission of the light emitting section 12, a control circuit, and the like.
　発光部１２は、光源２１と、その周囲に形成された導光部２２とを含む。光源２１は、例えば、赤色を発光する発光素子、緑色を発光する発光素子、および、青色を発光する発光素子を備え、各発光素子は、例えば発光ダイオード（ＬＥＤ）で構成される。発光部１２のサイズ（例えばチップサイズ）は特に制限されないが、例えば１ｍｍ２以下、あるいは、例えば０．３ｍｍ２以下、あるいは、例えば０．１ｍｍ２以下の大きさで形成され、微小光源とされる。なお、発光部１２は、赤色、緑色、および、青色を発光する発光素子の個数が１個ずつではなく、複数個でもよい。また、発光する色によって発光素子の個数が異なっていてもよい。さらに、一部または全ての発光部１２には、白色光を発光する発光素子や、イエロー、シアン、またはマゼンタを発光する発光素子が設けられてもよい。光源２１を構成する複数の発光素子の配置も任意である。 The light emitting section 12 includes a light source 21 and a light guiding section 22 formed therearound. The light source 21 includes, for example, a light emitting element that emits red light, a light emitting element that emits green light, and a light emitting element that emits blue light, and each light emitting element is configured by, for example, a light emitting diode (LED). Although the size (for example, chip size) of the light emitting part 12 is not particularly limited, it is formed with a size of, for example, 1 mm 2 or less, or, for example, 0.3 mm 2 or less, or, for example, 0.1 mm 2 or less, and is used as a minute light source. . Note that the number of light emitting elements for emitting red, green, and blue light in the light emitting section 12 may not be one each, but may be plural. Also, the number of light-emitting elements may differ depending on the color of light emitted. Furthermore, some or all of the light emitting units 12 may be provided with a light emitting element that emits white light, or a light emitting element that emits yellow, cyan, or magenta light. Arrangement of a plurality of light emitting elements which constitute light source 21 is also arbitrary.
　導光部２２は、例えばエポキシ樹脂やシリコン樹脂等のモールド樹脂により、光源２１が発する光の出射方向（図１において一点鎖線で示される領域）と、その周囲を含む領域に形成されている。基板１１上に形成された導光部２２は、基板１１との接続面である底部Ｓ１の面積３１が、光出射口となる上部Ｓ２の面積３２よりも大きく、上部Ｓ２から底部Ｓ１へ向かうに従って側壁が外側に拡がるテーパ形状（傾斜形状）を有している。光出射口となる上部Ｓ２のサイズは、光源２１の光の出射方向の拡がり角をθ、光源２１から上部Ｓ２までの距離を加飾層１３の厚みTKと同じとすると、好ましくは、（上部Ｓ２のサイズ）＞{（光源２１のサイズ）＋２*TK*tanθ}、すなわち、{（光源２１のサイズ）＋２*TK*tanθ}が、上部Ｓ２のサイズより小さくなるように形成されている。ただし、導光部２２が、内部の多重反射光を取り出せる構造を有する場合などはこの限りではない。光源２１の拡がり角θは、一般的な発光ダイオードでは例えば４５°程度であり、狭配光の発光ダイオードの場合はさらに小さくなる。 The light guide part 22 is formed in a region including the emission direction of the light emitted by the light source 21 (the region indicated by the dashed-dotted line in FIG. 1) and its surroundings, for example, using molding resin such as epoxy resin or silicone resin. In the light guide portion 22 formed on the substrate 11, the area 31 of the bottom portion S1, which is the connection surface with the substrate 11, is larger than the area 32 of the top portion S2, which is the light exit port, and the area 32 increases from the top portion S2 toward the bottom portion S1. The side wall has a tapered shape (inclined shape) that expands outward. The size of the upper portion S2 serving as the light exit port is preferably (upper portion The size of S2)>{(size of light source 21)+2*TK*tan θ}, that is, {(size of light source 21)+2*TK*tan θ} is formed to be smaller than the size of upper portion S2. However, this is not the case when the light guide section 22 has a structure capable of extracting the multiple reflected light inside. The spread angle θ of the light source 21 is, for example, about 45° for general light emitting diodes, and is even smaller for narrow light distribution light emitting diodes.
　基板１１上に複数実装されている発光部１２（光源２１）どうしの第１方向（例えばX方向）の間隔である配置ピッチP1は、０．１ｍｍないし１０ｍｍの範囲の所定の値、例えば、１．２６ｍｍなどとされる。第１方向に直交する基板１１の第２方向（例えばY方向）の配置ピッチP2（不図示）は、第１方向の配置ピッチP1に合わせてもよいし、異ならせてもよい。配置ピッチP1およびP2は、解像度、発光部１２のサイズ、発光時の必要輝度、視聴距離等に応じて適宜決定することができる。例えば、視聴距離に応じて配置ピッチP1を決定する場合、配置ピッチP1＝視聴距離[ｍ]÷２１６０により決定することができる。また例えば、表示装置１としての必要輝度を満たすために、例えば、｛（配置ピッチP1）÷（発光部１２のサイズ）｝＜１００となるように、発光部１２のサイズに応じて配置ピッチP1を決定してもよい。 The arrangement pitch P1, which is the interval in the first direction (for example, the X direction) between the plurality of light emitting units 12 (light sources 21) mounted on the substrate 11, is a predetermined value in the range of 0.1 mm to 10 mm, for example, 1 .26 mm. An arrangement pitch P2 (not shown) of the substrates 11 in a second direction (for example, the Y direction) orthogonal to the first direction may be matched with or different from the arrangement pitch P1 in the first direction. The arrangement pitches P1 and P2 can be appropriately determined according to the resolution, the size of the light emitting section 12, the required brightness during light emission, the viewing distance, and the like. For example, when the arrangement pitch P1 is determined according to the viewing distance, it can be determined by the arrangement pitch P1=viewing distance [m]/2160. Further, for example, in order to satisfy the luminance required for the display device 1, the arrangement pitch P1 is adjusted according to the size of the light emitting units 12 so that {(arrangement pitch P1)÷(size of the light emitting units 12)}<100, for example. may be determined.
　ここで、図２を参照して、発光部１２の平面形状について説明する。図２のAないしCは、基板１１の上側から発光部１２をみた平面図である。 Here, the planar shape of the light emitting section 12 will be described with reference to FIG. 2A to 2C are plan views of the light emitting section 12 viewed from above the substrate 11. FIG.
　導光部２２の平面形状は、例えば図２のAに示されるように、円形状とすることができる。また例えば、光源２１の平面形状が長方形である場合には、図２のBまたはCに示されるように、導光部２２の平面形状を楕円形状や長方形としてもよい。勿論、導光部２２の平面形状を正方形とすることもできる。 The planar shape of the light guide part 22 can be circular, for example, as shown in A of FIG. Further, for example, when the planar shape of the light source 21 is rectangular, the planar shape of the light guide section 22 may be elliptical or rectangular as shown in B or C of FIG. 2 . Of course, the planar shape of the light guide portion 22 can also be square.
　導光部２２の基板側の底部Ｓ１の径（幅）は、上部Ｓ２の径（幅）以上、配置ピッチP1以下であればよい。導光部２２の光出射口である上部Ｓ２の径（幅）は、光源２１の径（幅）以上、配置ピッチP1の３０％以下とされる。導光部２２の光透過率は、例えば８０％以上とすることが好ましい。 The diameter (width) of the bottom portion S1 on the substrate side of the light guide portion 22 may be equal to or greater than the diameter (width) of the upper portion S2 and equal to or less than the arrangement pitch P1. The diameter (width) of the upper portion S2, which is the light exit port of the light guide portion 22, is greater than or equal to the diameter (width) of the light source 21 and less than or equal to 30% of the arrangement pitch P1. It is preferable that the light transmittance of the light guide section 22 is, for example, 80% or more.
　図１に戻り、加飾層１３は、例えば、ファブリック（布、繊維）、革、木目調等の化粧板、壁紙（漆喰などの凹凸のあるテクスチャ素材を含む）、絵画、意匠層を形成したフィルム、金属薄膜が塗膜されたフィルム等で構成される。加飾層１３は、発光部１２が点灯していない状態において、観察者に、所定の意匠を視認させる。また、加飾層１３は、加飾層１３の厚みや凹凸により、観察者に所定の質感や肌触りを提供する。加飾層１３には、絵、文字、ロゴ、記号、符号、印、標章、図案等を含む模様が形成されていてもよい。 Returning to FIG. 1, the decorative layer 13 includes, for example, fabric (cloth, fiber), leather, veneer such as wood grain, wallpaper (including uneven texture materials such as plaster), painting, and design layer. It is composed of a film, a film coated with a metal thin film, or the like. The decorative layer 13 allows an observer to visually recognize a predetermined design when the light emitting section 12 is not lit. In addition, the decorative layer 13 provides the observer with a predetermined texture and feel due to the thickness and unevenness of the decorative layer 13 . Patterns including pictures, characters, logos, symbols, signs, marks, emblems, designs, and the like may be formed on the decorative layer 13 .
　加飾層１３の厚みTKは、素材によって異なる。加飾層１３の素材がファブリック（布、繊維）である場合、例えば、１００ないし５０００μｍ程度の厚みが想定される。加飾層１３の素材が革または化粧板である場合、例えば、５００ないし２０００μｍ程度の厚みが想定される。加飾層１３の素材が壁紙または絵画である場合、例えば、５００ないし３０００μｍ程度の厚みが想定される。加飾層１３の素材がフィルムである場合、例えば、５０ないし５００μｍ程度の厚みが想定される。 The thickness TK of the decorative layer 13 varies depending on the material. When the material of the decorative layer 13 is fabric (cloth, fiber), the thickness is assumed to be approximately 100 to 5000 μm, for example. When the material of the decorative layer 13 is leather or a decorative board, the thickness is assumed to be about 500 to 2000 μm, for example. When the material of the decorative layer 13 is wallpaper or painting, the thickness is assumed to be about 500 to 3000 μm, for example. When the material of the decorative layer 13 is a film, the thickness is assumed to be approximately 50 to 500 μm, for example.
　加飾層１３は、基板１１に接着されるが、基板１１から剥がして、例えば意匠の異なる新しい加飾層１３に貼りかえることも可能である。 The decorative layer 13 is adhered to the substrate 11, but it is also possible to peel it off from the substrate 11 and attach it to a new decorative layer 13 with a different design, for example.
　発光部１２の高さ（底部Ｓ１から上部Ｓ２までの距離）は、加飾層１３の厚みに合わせて形成される。観察者に視認される表示装置１の表示面は、導光部２２の上部Ｓ２か、または、加飾層１３となるが、導光部２２の上部Ｓ２の占める面積は、加飾層１３が占める面積の２０％以下とすることが好ましい。これにより、加飾層１３をより自然に視認することができる。 The height of the light emitting part 12 (the distance from the bottom part S1 to the top part S2) is formed according to the thickness of the decorative layer 13. The display surface of the display device 1 visually recognized by the observer is the upper portion S2 of the light guide portion 22 or the decorative layer 13. The area occupied by the upper portion S2 of the light guide portion 22 is It is preferable to make it 20% or less of the area occupied. Thereby, the decorative layer 13 can be visually recognized more naturally.
　以上のように構成される表示装置１においては、導光部２２の側壁が、上部Ｓ２から底部Ｓ１へ向かうに従って外側に拡がるテーパ形状とされている。このように、導光部２２の立体形状を、先端部である上部Ｓ２が、底部Ｓ１よりも小さくなる突起形状としたことにより、加飾層１３を基板１１に貼り合わせる際の位置合わせや、加飾層１３の発光部１２の位置に予め開口部（穴）を設けることを不要としている。 In the display device 1 configured as described above, the side wall of the light guide portion 22 has a tapered shape that expands outward from the top portion S2 toward the bottom portion S1. As described above, the three-dimensional shape of the light guide portion 22 is formed into a projection shape in which the top portion S2, which is the tip portion, is smaller than the bottom portion S1. It is not necessary to provide openings (holes) in advance at the positions of the light emitting portions 12 of the decorative layer 13 .
　すなわち、詳細は後述するが、加飾層１３を基板１１に貼り合わせる前には、加飾層１３の発光部１２の位置には開口部（穴）が設けられておらず、加飾層１３を基板１１に貼り合わせることにより、発光部１２の導光部２２が加飾層１３を貫通し、図１のような断面構成となる。導光部２２の立体形状を、先端部である上部Ｓ２が、底部Ｓ１よりも小さくなる突起形状としたことにより、発光部１２が加飾層１３を貫通しやすくするとともに、導光部２２の根元を補強する機能を有している。導光部２２の根元の補強部は、加飾層１３を基板１１に貼り合わせる際に、発光部１２の折れ（倒れ）等を防止する。 That is, although the details will be described later, before bonding the decorative layer 13 to the substrate 11, no openings (holes) are provided at the positions of the light emitting portions 12 of the decorative layer 13, and the decorative layer 13 is attached to the substrate 11, the light guide portion 22 of the light emitting portion 12 penetrates the decorative layer 13, and the cross-sectional configuration shown in FIG. 1 is obtained. The three-dimensional shape of the light guide portion 22 is formed into a projection shape in which the top portion S2, which is the tip portion, is smaller than the bottom portion S1. It has the function of reinforcing the root. The reinforcing portion at the base of the light guide portion 22 prevents the light emitting portion 12 from breaking (falling down) or the like when the decorative layer 13 is adhered to the substrate 11 .
＜２．発光部の他の構成例＞
　図３を参照して、発光部１２の他の構成例について説明する。 <2. Other Configuration Examples of Light Emitting Unit>
Another configuration example of the light emitting unit 12 will be described with reference to FIG.
　なお、図３において、図１で示した各部と対応する部分については同一の符号を付してあり、その部分の説明は適宜省略する。 In FIG. 3, parts corresponding to those shown in FIG. 1 are denoted by the same reference numerals, and description of those parts will be omitted as appropriate.
　図３のAないしCは、導光部２２のその他の形状例を示す断面図である。 3A to 3C are cross-sectional views showing other shape examples of the light guide portion 22. FIG.
　図１で示した基本の実施の形態では、導光部２２の断面形状が、上部Ｓ２から底部Ｓ１へ向かうに従って大きくなるテーパ形状を有していた。 In the basic embodiment shown in FIG. 1, the cross-sectional shape of the light guide portion 22 has a tapered shape that increases from the top portion S2 toward the bottom portion S1.
　しかしながら、導光部２２の上部Ｓ２が底部Ｓ１よりも小さくなる形状であれば、導光部２２の立体形状はテーパ形状に限られない。 However, as long as the top portion S2 of the light guide portion 22 is smaller than the bottom portion S1, the three-dimensional shape of the light guide portion 22 is not limited to the tapered shape.
　例えば、導光部２２は、図３のAに示されるように、導光部２２の底部Ｓ１側の根元側を第１の径Ｄ１の円柱状に形成し、上部Ｓ２側の先端側を第２の径Ｄ２（＜Ｄ１）の円柱状で形成して、上部Ｓ２が底部Ｓ１よりも小さくなる形状としてもよい。 For example, as shown in FIG. 3A, the light guide portion 22 is formed in a cylindrical shape having a first diameter D1 on the base side of the bottom portion S1 side of the light guide portion 22, and a first diameter on the tip side of the top portion S2 side. 2 may be formed in a cylindrical shape with a diameter D2 (<D1), and the top portion S2 may be smaller than the bottom portion S1.
　また例えば、導光部２２は、図３のBに示されるように、上部Ｓ２を含む先端部が底部Ｓ１へ向かうに従って外側に拡がるテーパ形状を有し、途中の高さから、テーパ形状の平面積よりも大きい平面積の円柱形状や角柱形状を有する形状としてもよい。 Further, for example, as shown in FIG. 3B, the light guide portion 22 has a tapered shape in which the tip portion including the top portion S2 expands outward toward the bottom portion S1, and the tapered shape flattened from the middle height. A cylindrical shape or prismatic shape with a plane area larger than the area may be used.
　あるいはまた、導光部２２は、図３のCに示されるように、側壁が導光部２２の上部Ｓ２から底部Ｓ１へ向かうに従って階段状に拡がる形状としてもよい。 Alternatively, as shown in FIG. 3C, the light guide portion 22 may have a shape in which the side walls widen stepwise from the top portion S2 of the light guide portion 22 toward the bottom portion S1.
　図１に示したテーパ形状も含めて、導光部２２は、平面方向の径（幅）が小さい上部Ｓ２を含む先端部と、平面方向の径（幅）が先端部より大きい底部Ｓ１を含む根元部とに分けることができる。先端部は、加飾層１３を貫通しやすくする貫通補助部として機能し、根元部は、突起形状の導光部２２の折れ耐性を備える補強部として機能する。 Including the tapered shape shown in FIG. 1, the light guide portion 22 includes a tip portion including an upper portion S2 having a smaller diameter (width) in the plane direction, and a bottom portion S1 having a larger diameter (width) in the plane direction than the tip portion. It can be divided into root and root. The tip portion functions as a penetration assisting portion that facilitates penetration through the decorative layer 13 , and the root portion functions as a reinforcing portion that provides resistance to bending of the projection-shaped light guide portion 22 .
　図４のAないしCは、発光部１２のその他の構成例を示している。 4A to 4C show other configuration examples of the light emitting unit 12. FIG.
　図４においても、図１で示した各部と対応する部分については同一の符号を付してあり、その部分の説明は適宜省略する。 Also in FIG. 4, the same reference numerals are assigned to the parts corresponding to the parts shown in FIG. 1, and the description of those parts will be omitted as appropriate.
　図４のAは、発光部１２の第１変形例を示している。 FIG. 4A shows a first modified example of the light emitting section 12. FIG.
　図４のAに示される発光部１２は、図１で示した発光部１２の構成に、配光制御部４１と、光反射部４２または強度強化部４３とをさらに備える。 The light emitting section 12 shown in FIG. 4A further includes a light distribution control section 41 and a light reflecting section 42 or an intensity enhancing section 43 in addition to the configuration of the light emitting section 12 shown in FIG.
　配光制御部４１は、導光部２２の光出射口である上部Ｓ２に設けられ、光出射口から出る光を広げる機能を有する。配光制御部４１は、例えば、可視光の波長以下の周期で繰り返される凹凸構造、または、ランダムに形成された凹凸構造により構成される。あるいはまた、屈折率の異なる微粒子を分散させた構造により、配光制御部４１を形成してもよい。配光制御部４１により、光源２１から出た光が散乱されることにより、表示装置１の視野角を向上させることができる。 The light distribution control section 41 is provided in the upper portion S2, which is the light exit port of the light guide section 22, and has the function of expanding the light emitted from the light exit port. The light distribution control unit 41 is composed of, for example, an uneven structure that repeats at a period equal to or shorter than the wavelength of visible light, or an uneven structure that is randomly formed. Alternatively, the light distribution control section 41 may be formed with a structure in which fine particles having different refractive indices are dispersed. The viewing angle of the display device 1 can be improved by scattering the light emitted from the light source 21 by the light distribution control section 41 .
　光反射部４２は、所定の膜を導光部２２のテーパ形状の側壁および底部Ｓ１に形成することで構成され、光源２１から出た光を反射させ、導光部２２の上部Ｓ２から出射させる。光反射部４２は、例えば、金属膜、誘電体多層膜、高屈折率を有する膜（高屈折率膜）などで構成される。光反射部４２により、光源２１から出た光の取り出し効率を向上させることができる。 The light reflecting portion 42 is formed by forming a predetermined film on the tapered side wall and the bottom portion S1 of the light guide portion 22, and reflects the light emitted from the light source 21 so that it is emitted from the upper portion S2 of the light guide portion 22. . The light reflecting portion 42 is composed of, for example, a metal film, a dielectric multilayer film, a film having a high refractive index (high refractive index film), or the like. The light reflection part 42 can improve the extraction efficiency of the light emitted from the light source 21 .
　強度強化部４３は、所定の膜を導光部２２のテーパ形状の側壁および底部Ｓ１に形成することで構成され、導光部２２の表面を被膜することで導光部２２を補強する。強度強化部４３は、例えば、無機絶縁膜、金属膜、硬度の高い樹脂膜などで構成される。強度強化部４３を設けることにより、導光部２２の表面の傷耐性を向上させることができる。 The strength reinforcing portion 43 is formed by forming a predetermined film on the tapered side wall and bottom portion S1 of the light guide portion 22, and reinforces the light guide portion 22 by coating the surface of the light guide portion 22. The strength reinforcing portion 43 is composed of, for example, an inorganic insulating film, a metal film, a hard resin film, or the like. By providing the strength reinforcing portion 43, the scratch resistance of the surface of the light guide portion 22 can be improved.
　導光部２２のテーパ形状の側壁および底部Ｓ１には、光反射部４２または強度強化部４３のどちらか一方に特化した被膜を形成してもよいし、光反射部４２または強度強化部４３の両方の機能を有する被膜を形成してもよい。例えば、金属膜を導光部２２のテーパ形状の側壁および底部Ｓ１に形成することにより、光反射部４２および強度強化部４３の両方の機能を持たせることができる。 The tapered side wall and bottom portion S1 of the light guide portion 22 may be coated with a film specialized for either the light reflecting portion 42 or the strength enhancing portion 43, or the light reflecting portion 42 or the strength enhancing portion 43 may be formed. A coating having both functions may be formed. For example, by forming a metal film on the tapered side wall and bottom portion S1 of the light guide portion 22, it is possible to provide both the functions of the light reflecting portion 42 and the strength enhancing portion 43. FIG.
　図４のBは、発光部１２の第２変形例を示している。 FIG. 4B shows a second modified example of the light emitting section 12. FIG.
　図４のBに示される発光部１２は、導光部２２の一部に、集光光学系としての高屈折率層４５をさらに備えた構成である。高屈折率層４５以外の構成は、図１で示した発光部１２と同様である。 The light emitting section 12 shown in FIG. 4B has a configuration in which a part of the light guide section 22 is further provided with a high refractive index layer 45 as a condensing optical system. The configuration other than the high refractive index layer 45 is the same as that of the light emitting section 12 shown in FIG.
　具体的には、光源２１の光出射方向（前方）に、導光部２２の周囲のモールド樹脂よりも屈折率の高い高屈折率層４５が形成されている。高屈折率層４５は、導光部２２の周囲のモールド樹脂よりも屈折率の高い樹脂でもよいし、光ファイバ等でもよい。高屈折率層４５と、その周囲の樹脂層との屈折率の違いにより、光源２１から出射された光が高屈折率層４５で全反射することで、光源２１の光を前方へ効率的に出力させることができる。 Specifically, a high refractive index layer 45 having a higher refractive index than the mold resin surrounding the light guide portion 22 is formed in the light emitting direction (forward) of the light source 21 . The high refractive index layer 45 may be a resin having a higher refractive index than the molding resin around the light guide section 22, or may be an optical fiber or the like. Due to the difference in refractive index between the high refractive index layer 45 and the surrounding resin layer, the light emitted from the light source 21 is totally reflected by the high refractive index layer 45, so that the light from the light source 21 is efficiently directed forward. can be output.
　図４のCは、発光部１２の第３変形例を示している。 FIG. 4C shows a third modified example of the light emitting section 12. FIG.
　図４のCに示される発光部１２は、導光部２２内に、集光光学系としての反射板（ミラー）４６をさらに備えた構成である。反射板４６以外の構成は、図１で示した発光部１２と同様である。 The light emitting section 12 shown in FIG. 4C further includes a reflecting plate (mirror) 46 as a condensing optical system within the light guiding section 22 . The configuration other than the reflector 46 is the same as that of the light emitting section 12 shown in FIG.
　具体的には、導光部２２内に、光源２１の周囲および光出射方向（前方）を囲むように、略半球状の反射板４６が形成されている。反射板４６は、例えば、金属製の板、または、表面に金属膜が成膜された樹脂製の板等で構成される。光源２１から出射された光が反射板４６で全反射することで、光源２１の光を前方へ効率的に出力させることができる。 Specifically, a substantially hemispherical reflecting plate 46 is formed in the light guide section 22 so as to surround the light source 21 and the light emitting direction (forward). The reflector 46 is configured by, for example, a metal plate or a resin plate having a metal film formed on the surface thereof. Since the light emitted from the light source 21 is totally reflected by the reflector 46, the light from the light source 21 can be efficiently output forward.
　図４のAないしCの発光部１２は、図１で示した発光部１２の構成に、配光制御部４１、光反射部４２、強度強化部４３、高屈折率層４５、または、反射板４６の少なくとも一つをさらに追加した構成であるが、図３のAないしCに示した形状の導光部２２に対しても同様に追加できることは言うまでもない。また、導光部２２の平面形状が、図２のAないしCのいずれの形状であっても同じく適用することができる。図４のAないしCの配光制御部４１、光反射部４２、強度強化部４３、高屈折率層４５、および、反射板４６の複数を適宜組み合わせて配置してもよい。 4A to 4C has a configuration of the light emitting unit 12 shown in FIG. 46 is further added, it goes without saying that it can be similarly added to the light guide portions 22 having the shapes shown in FIGS. 3A to 3C. Also, the planar shape of the light guide portion 22 can be similarly applied even if it is any shape of A to C in FIG. 2 . A plurality of light distribution control portions 41, light reflecting portions 42, strength enhancing portions 43, high refractive index layers 45, and reflecting plates 46 shown in FIGS. 4A to 4C may be appropriately combined and arranged.
＜３．表示装置の製造方法＞
　次に、図５を参照して、表示装置１の製造方法について説明する。 <3. Method for manufacturing display device>
Next, a method for manufacturing the display device 1 will be described with reference to FIG.
　初めに、図５のAに示されるように、光源２１が基板１１の所定の位置に実装される。図５は、１つの光源２１に注目して示した図であるが、実際には、上述したように、複数の光源２１が所定の配置ピッチP1またはP2で基板１１に実装される。 First, the light source 21 is mounted at a predetermined position on the substrate 11 as shown in FIG. 5A. FIG. 5 is a diagram focusing on one light source 21, but in reality, as described above, a plurality of light sources 21 are mounted on the substrate 11 at a predetermined arrangement pitch P1 or P2.
　次に、図５のBに示されるように、光源２１の周囲に導光部２２が、例えばエポキシ樹脂などにより形成される。導光部２２は、例えば、上部Ｓ２から底部Ｓ１へ向かうに従って側壁が外側に拡がるテーパ形状にモールド成形される。光源２１の周囲に導光部２２が形成されたことにより、発光部１２が完成する。光反射部４２や強度強化部４３を形成する場合には、導光部２２を形成する前の基板１１上面や、導光部２２を形成した後の側壁に、光反射部４２や強度強化部４３が形成される。また、配光制御部４１を形成する場合には、導光部２２が形成された後、その上部Ｓ２に配光制御部４１が形成される。 Next, as shown in FIG. 5B, a light guide portion 22 is formed around the light source 21 using, for example, epoxy resin. The light guide portion 22 is molded, for example, in a tapered shape in which side walls widen outward from the top portion S2 toward the bottom portion S1. By forming the light guide portion 22 around the light source 21, the light emitting portion 12 is completed. When forming the light reflecting portion 42 and the strength enhancing portion 43, the light reflecting portion 42 and the strength enhancing portion are formed on the upper surface of the substrate 11 before the light guide portion 22 is formed and on the side wall after the light guide portion 22 is formed. 43 are formed. Moreover, when forming the light distribution control part 41, after the light guide part 22 is formed, the light distribution control part 41 is formed in the upper part S2.
　次に、図５のCに示されるように、ローラ５１など部材で機械式に加飾層１３を基板１１に押し付けることにより、基板１１の上面に、加飾層１３が貼り合わされる。加飾層１３の裏面（基板１１側の下面）および基板１１の上面の少なくとも一方または両方には、粘着層が設けられている。貼り合わせ前の加飾層１３には、特に開口部（穴）は設けられておらず、加飾層１３が基板１１の上面に貼り合わされることにより、発光部１２の導光部２２が加飾層１３を貫通して、図１に示した断面構造が完成する。 Next, as shown in FIG. 5C, the decoration layer 13 is attached to the upper surface of the substrate 11 by mechanically pressing the decoration layer 13 against the substrate 11 with a member such as a roller 51 . An adhesive layer is provided on at least one or both of the rear surface of the decorative layer 13 (lower surface on the substrate 11 side) and the upper surface of the substrate 11 . The decoration layer 13 before bonding is not particularly provided with openings (holes). The cross-sectional structure shown in FIG. 1 is completed through the decorative layer 13 .
　加飾層１３の裏面と基板１１上面の粘着強度は剥がせる程度の強度とし、加飾層１３は貼り替え可能とされる。 The adhesive strength between the back surface of the decorative layer 13 and the top surface of the substrate 11 is set to a level that allows them to be peeled off, and the decorative layer 13 can be replaced.
　図６および図７を参照して、図５のCに対応する、加飾層１３と基板１１を貼り合わせる工程のその他の方法を説明する。 Another method of bonding the decorative layer 13 and the substrate 11, corresponding to C in FIG. 5, will be described with reference to FIGS.
　例えば、図６のAに示されるように、ドライヤ５２の温風で上側から下方へ加圧することで加飾層１３と基板１１を貼り合わせたり、図６のBに示されるように、加飾層１３と基板１１との間を真空吸着することにより、加飾層１３と基板１１を貼り合わせる方法を採用することができる。 For example, as shown in A of FIG. 6, the decorative layer 13 and the substrate 11 are bonded together by applying pressure from the upper side to the lower side with hot air from a dryer 52, or as shown in B of FIG. A method of bonding the decorative layer 13 and the substrate 11 together by vacuum suction between the layer 13 and the substrate 11 can be employed.
　また、図６のCに示されるように、加飾層１３に接着されたマグネット５３Nと、基板１１に接着されたマグネット５３Sとにより、加飾層１３と基板１１を貼り合わせる方法を採用してもよい。この場合、マグネット５３Nおよび５３Sの配置密度は、光源２１の配置密度よりも疎な密度とすることができる。すなわち、マグネット５３Nおよび５３Sの平面方向の配置ピッチは、光源２１の配置ピッチP1またはP2よりも大きく設定することができる。 Moreover, as shown in FIG. 6C, a method is adopted in which the decorative layer 13 and the substrate 11 are bonded together by a magnet 53N adhered to the decorative layer 13 and a magnet 53S adhered to the substrate 11. good too. In this case, the arrangement density of the magnets 53N and 53S can be made less dense than the arrangement density of the light sources 21. FIG. That is, the arrangement pitch of the magnets 53N and 53S in the planar direction can be set larger than the arrangement pitch P1 or P2 of the light source 21. FIG.
　また、図７に示されるように、発光部１２に対応する位置が凹んだ治具５４で、加飾層１３の上側から基板１１方向へ押し付けることにより、加飾層１３と基板１１を貼り合わせてもよい。 In addition, as shown in FIG. 7, the decoration layer 13 and the substrate 11 are bonded together by pressing the decoration layer 13 from the upper side toward the substrate 11 with a jig 54 having a concave portion corresponding to the light emitting portion 12 . may
　上述した各種の製造方法の例では、光源２１を基板１１上に実装した後で、導光部２２を形成したが、導光部２２が光源２１と一体にパッケージ化された発光部１２を用いることもできる。一般にSMD（Surface Mount Device）と呼ばれる表面実装型の発光ダイオード（ＬＥＤ）が、このようなパッケージ化された発光部１２に相当する。 In the examples of the various manufacturing methods described above, the light guide portion 22 is formed after the light source 21 is mounted on the substrate 11. However, the light emitting portion 12 in which the light guide portion 22 is integrally packaged with the light source 21 is used. can also A surface-mounted light-emitting diode (LED) generally called an SMD (Surface Mount Device) corresponds to such a packaged light-emitting unit 12 .
　図８は、光源２１と導光部２２が一体にパッケージ化された発光部１２を用いる場合の表示装置１の製造方法を説明する図である。 FIG. 8 is a diagram explaining a method of manufacturing the display device 1 when using the light emitting section 12 in which the light source 21 and the light guide section 22 are integrally packaged.
　初めに、図８のAおよびBに示されるように、基板１１の所定の位置に、パッケージ化された発光部１２が実装される。発光部１２の配置ピッチP1またはP2などは、上述した製造方法と同様である。 First, as shown in FIGS. 8A and 8B, the packaged light-emitting portion 12 is mounted at a predetermined position on the substrate 11 . The arrangement pitch P1 or P2 of the light emitting units 12 is the same as in the manufacturing method described above.
　次に、図８のCに示されるように、ローラ５１などの部材で機械式に加飾層１３を基板１１に押し付けることにより、基板１１の上面に、加飾層１３が貼り合わされる。貼り合わせ前の加飾層１３には、特に開口部（穴）は設けられておらず、加飾層１３が基板１１の上面に貼り合わされることにより、発光部１２の導光部２２が加飾層１３を貫通し、図１に示した断面構造が完成する。 Next, as shown in FIG. 8C, the decoration layer 13 is attached to the upper surface of the substrate 11 by mechanically pressing the decoration layer 13 against the substrate 11 with a member such as a roller 51. The decoration layer 13 before bonding is not particularly provided with openings (holes). The decoration layer 13 is penetrated, and the cross-sectional structure shown in FIG. 1 is completed.
　導光部２２が光源２１と一体にパッケージ化された発光部１２を用いた場合には、導光部２２を形成する工程が省略できるので、表示装置１をより簡単に製造することができる。 When the light guide part 22 uses the light emitting part 12 packaged integrally with the light source 21, the process of forming the light guide part 22 can be omitted, so the display device 1 can be manufactured more easily.
　上述した各種の製造方法によれば、貼り合わせ前の加飾層１３には、貼り合わせ後の発光部１２の位置に開口部は設けられておらず、加飾層１３を貼り合わせることにより導光部２２が加飾層１３を貫通することで、加飾層１３に対して所定の配置ピッチP1またはP2で発光部１２が配置された構造の表示装置１が製造される。 According to the various manufacturing methods described above, the decoration layer 13 before bonding is not provided with an opening at the position of the light-emitting part 12 after bonding, and the decoration layer 13 is bonded to the light-emitting portion 12 so that the light-emitting portion 12 is guided. The display device 1 having a structure in which the light emitting sections 12 are arranged at a predetermined arrangement pitch P1 or P2 with respect to the decorating layer 13 is manufactured by having the light sections 22 pass through the decorating layer 13 .
　加飾層１３には、発光部１２が挿入される位置に開口部を予め設ける必要がないので、加飾層１３を表示装置１専用に加工する必要がない。加飾層１３に事前の加工が不要であるため、加飾層１３として一般の加飾材を活用することもでき、表示装置１を低コストで実現できる。 Since the decorative layer 13 does not need to have openings in advance at positions where the light-emitting portions 12 are inserted, the decorative layer 13 does not need to be processed specifically for the display device 1 . Since the decoration layer 13 does not need to be processed in advance, a general decoration material can be used as the decoration layer 13, and the display device 1 can be realized at low cost.
　また、加飾層１３には開口部がないので、貼り合わせをする際、発光部１２との位置合わせが不要となるので、簡単に貼り合わせることができる。発光部１２の位置に対応して加飾層１３に開口部を設けておき、位置合わせをしながら、基板１１に加飾層１３を貼り合わせる製造方法の場合、仮に位置ずれが発生した場合には、光源２１からの光を遮る部分が発生するため、視野角が狭くなってしまう。視野角悪化を防止するため、マージンを持たせて開口部を大きめに形成すると、加飾層１３の自然な視認性が損なわれる。 In addition, since the decorative layer 13 has no openings, it is not necessary to align it with the light-emitting part 12, so that it can be easily attached. In the case of a manufacturing method in which an opening is provided in the decorative layer 13 corresponding to the position of the light-emitting portion 12 and the decorative layer 13 is adhered to the substrate 11 while aligning the position, even if misalignment occurs, , there is a portion that blocks the light from the light source 21, resulting in a narrow viewing angle. In order to prevent deterioration of the viewing angle, the natural visibility of the decorative layer 13 is impaired if the opening is formed with a large margin.
　表示装置１の製造方法によれば、加飾層１３には事前の開口部がなく、加飾層１３に対して導光部２２を貫通させることで加飾層１３に開口部を形成するので、発光部１２のサイズに対して開口部のマージンがなく、表示装置１の表示面における発光部１２の面積比を小さくすることができ、加飾層１３の視認性を向上させることができる。 According to the manufacturing method of the display device 1 , the decoration layer 13 does not have an opening in advance, and the opening is formed in the decoration layer 13 by penetrating the light guide part 22 through the decoration layer 13 . Since there is no opening margin for the size of the light emitting part 12, the area ratio of the light emitting part 12 to the display surface of the display device 1 can be reduced, and the visibility of the decorative layer 13 can be improved.
　また、位置ずれも発生しないので、加飾層１３による光のケラレによる視野角特性の低下を防止することができる。 Also, since positional deviation does not occur, it is possible to prevent deterioration of viewing angle characteristics due to vignetting of light by the decorative layer 13 .
　加飾層１３には事前の開口部がないため、加飾層１３を貫通した発光部１２の周辺を拡大すると、図９のように、導光部２２の貫通により開口した加飾層１３の端部（切り口）がめくれ上がる形で導光部２２の周囲を覆う状態となる。このめくれ上がった導光部２２の周囲の加飾層１３の変形部分が、加飾層１３から突き出た導光部２２の周辺を保護する保護部としても機能する。 Since the decorative layer 13 does not have a pre-opening portion, when the periphery of the light emitting portion 12 penetrating the decorative layer 13 is enlarged, as shown in FIG. The periphery of the light guide section 22 is covered with the edge (cut) turned up. The deformed portion of the decorative layer 13 around the light guide portion 22 that is turned up also functions as a protective portion that protects the periphery of the light guide portion 22 protruding from the decorative layer 13 .
　なお、上述した例では、加飾層１３には事前の開口部を設けないこととしたが、発光部１２のサイズに対応した開口部、具体的には、発光部１２のサイズ（例えば上部Ｓ２のサイズ）以上の開口はないが、それより小さい開口はあってもよい。例えば、貫通を補助する貫通補助部として、発光部１２のサイズの１／２ないし１／１０程度の小さい穴を均等なピッチで設けてもよい。貫通補助部があることにより、加飾層１３を貼り合わせる際に、導光部２２の貫通を行いやすくする効果を持たせることができる。貫通補助部は、開口（穴）ではなく、窪みや、十字の切込みなどでもよい。 In the above-described example, the decoration layer 13 was not provided with an opening in advance, but an opening corresponding to the size of the light emitting unit 12, specifically, the size of the light emitting unit 12 (for example, the upper part S2 size), but there may be smaller openings. For example, small holes about 1/2 to 1/10 the size of the light-emitting portion 12 may be provided at a uniform pitch as a penetration assisting portion that assists penetration. The presence of the penetration assisting portion can have the effect of facilitating the penetration of the light guide portion 22 when the decorative layer 13 is adhered. The penetration assisting portion may be a recess, a cross-shaped notch, or the like, instead of an opening (hole).
＜４．表示装置のユニット構成例＞
　図１０は、本開示に係る表示装置のその他の実施の形態を示す斜視外観図である。 <4. Unit configuration example of display device>
FIG. 10 is a perspective external view showing another embodiment of the display device according to the present disclosure.
　図１の表示装置１は、それ単体で、大きなディスプレイサイズを有するように形成することもできるが、図１０に示されるように、単体では一定程度の小型のディスプレイサイズを有する表示装置１で構成し、その小型の表示装置１を２次元マトリクス状に複数配列することで、大きなディスプレイサイズを有する表示装置１００を実現してもよい。 The display device 1 shown in FIG. 1 can be formed by itself to have a large display size, but as shown in FIG. However, by arranging a plurality of small display devices 1 in a two-dimensional matrix, the display device 100 having a large display size may be realized.
　換言すれば、図１０の表示装置１００は、図１の表示装置１を表示装置ユニットとして、２次元マトリクス状に複数配列して構成される。表示装置１００は、表示装置１をタイル状に複数配列して構成され、一つの映像を表示する。各表示装置１は、複数配列された他の表示装置１と連携して一つの映像の一部を表示する。 In other words, the display device 100 in FIG. 10 is configured by arranging a plurality of display devices 1 in FIG. 1 in a two-dimensional matrix as display device units. The display device 100 is configured by arranging a plurality of display devices 1 in a tile shape, and displays one image. Each display device 1 displays part of one image in cooperation with other display devices 1 arranged in plurality.
　図１０では、説明のため、タイリングされた表示装置１どうしの境界を便宜的に示しているが、実際には、境界は視認できない程度に隣接して配置されている。また、図１０の例では、表示装置１００が、縦方向（Y方向）に４個、横方向（X方向）に３個の４ｘ３＝１２個の表示装置１を配列して構成されているが、タイリングされる表示装置１の個数は任意であり、ディスプレイサイズはスケーラブルである。 In FIG. 10, for convenience of explanation, the boundaries between the tiled display devices 1 are shown for convenience, but the boundaries are actually arranged adjacent to each other to the extent that they cannot be visually recognized. In the example of FIG. 10, the display device 100 is configured by arranging 4×3=12 display devices 1, four in the vertical direction (Y direction) and three in the horizontal direction (X direction). , the number of display devices 1 to be tiled is arbitrary, and the display size is scalable.
　表示装置１００（表示装置１）の正面が、加飾層１３が貼られた表示面であり、所定の配置ピッチで実装された複数の発光部１２が発光した時には、映像による所定の情報が表示される。一方、複数の発光部１２の非発光時には、表示装置１００は、加飾層１３による所定の意匠を視認させることができる。 The front of the display device 100 (display device 1) is the display surface to which the decorative layer 13 is attached, and when the plurality of light emitting units 12 mounted at a predetermined arrangement pitch emit light, predetermined information is displayed in the form of images. be done. On the other hand, when the plurality of light-emitting portions 12 do not emit light, the display device 100 allows the predetermined design by the decorative layer 13 to be visually recognized.
＜５．表示装置の用途例＞
　以下では、表示装置１または１００の用途例について説明する。 <5. Application example of the display device>
Application examples of the display device 1 or 100 will be described below.
　＜空間ディスプレイ＞
　表示装置１または１００は、例えば、建物（ビル）や会社のエントランス、高級ホテル、レストラン、住宅などの壁、天井、床などに、空間ディスプレイとして設置することができる。 <Spatial display>
The display device 1 or 100 can be installed as a spatial display on walls, ceilings, floors, etc. of buildings, company entrances, luxury hotels, restaurants, and residences.
　例えば、図１１に示されるように、リビングの壁面に表示装置１００を設置し、非発光時には、加飾層１３による壁の意匠が視認され、発光時には、壁一面がハワイの海辺の景色が表示されたり、会議相手の会議室の映像が表示されたりする。 For example, as shown in FIG. 11, the display device 100 is installed on the wall surface of the living room. When the display device 100 is not emitting light, the design of the wall by the decorative layer 13 is visually recognized, and when emitting light, the scenery of the seaside of Hawaii is displayed on the entire wall. or the image of the conference room of the other party is displayed.
　例えば、図１２に示されるように、リビングの壁面に、絵画やインテリアボードのように、表示装置１００を設置してもよい。図１２の例では、表示装置１００が、絵画１１１と並んで壁面に掛けられている。 For example, as shown in FIG. 12, the display device 100 may be installed on the wall of the living room like a painting or an interior board. In the example of FIG. 12, the display device 100 is hung on the wall side by side with the painting 111 .
　＜アミューズメント＞
　表示装置１または１００は、例えば、アミューズメントパーク施設、オブジェ、美術館などに施設の一部、または、オブジェ等として設置することができる。彫刻等のオブジェに適用したり、光学迷彩とオブジェの組み合わせに適用してもよい。室内空間を囲む壁面全体を表示装置１００で構成し、非発光時の室内から、発光時に異世界へワープするような臨場感を演出することができる。 <Amusement>
The display device 1 or 100 can be installed, for example, as a part of a facility, an object, or the like in an amusement park facility, an object, an art museum, or the like. It may be applied to objects such as sculptures, or may be applied to a combination of optical camouflage and objects. The entire wall surface surrounding the indoor space is composed of the display device 100, and a sense of realism can be produced as if the room is warped to another world when the light is emitted from the room when the light is not emitted.
　＜イベント＞
　表示装置１または１００は、例えば、アニメイベントなどのイベント、コンサート、または演劇等の舞台のセット、展示会の入口やブース等の装飾に適用することができる。 <event>
The display device 1 or 100 can be applied, for example, to decorations such as events such as animation events, stage sets for concerts or plays, and entrances and booths of exhibitions.
　＜車内空間＞
　表示装置１または１００は、例えば、自動車等の車両のダッシュボード、天井、ドア、ピラー、シート背面など、任意の領域に設置することができる。 <Vehicle space>
The display device 1 or 100 can be installed, for example, in an arbitrary area such as the dashboard, ceiling, door, pillar, and seat back of a vehicle such as an automobile.
　図１３は、自動車のダッシュボードの部分に、表示装置１００を適用した例を示している。 FIG. 13 shows an example in which the display device 100 is applied to the dashboard of an automobile.
　また例えば、自動車のピラーに表示装置１００を配置し、その表示装置１００に、運転者からピラーの視線方向の映像を表示するように構成することができる。この場合、車内空間のデザインを乱さずに死角を無くすことができる。 Further, for example, the display device 100 can be arranged on the pillar of the automobile, and the display device 100 can be configured to display an image in the line-of-sight direction of the pillar from the driver. In this case, blind spots can be eliminated without disturbing the design of the interior space of the vehicle.
　＜家電製品・情報機器＞
　表示装置１または１００は、例えば、スマートフォン、スマートウォッチ等の携帯型情報機器や、冷蔵庫、エアーコンディショナー等の家電製品にも適用することができる。 <Household Appliances/Information Equipment>
The display device 1 or 100 can be applied to, for example, portable information devices such as smart phones and smart watches, and home electric appliances such as refrigerators and air conditioners.
　本技術の実施の形態は、上述した実施の形態に限定されるものではなく、本技術の要旨を逸脱しない範囲において種々の変更が可能である。 Embodiments of the present technology are not limited to the above-described embodiments, and various modifications are possible without departing from the gist of the present technology.
　例えば、上述した複数の実施の形態の全てまたは一部を組み合わせた形態を採用することができる。 For example, a form obtained by combining all or part of the multiple embodiments described above can be adopted.
　なお、本明細書に記載された効果はあくまで例示であって限定されるものではなく、本明細書に記載されたもの以外の効果があってもよい。 It should be noted that the effects described in this specification are merely examples and are not limited, and there may be effects other than those described in this specification.
　なお、本開示に係る技術は、以下の構成を取ることができる。
（１）
　基板と、
　前記基板上に実装された複数の発光部と、
　前記発光部が実装された領域以外の前記基板上に形成された加飾層と
　を備え、
　前記発光部は、前記基板との接続面である底部の面積が、光出射口となる上部の面積よりも大きく形成された導光部を有する
　表示装置。
（２）
　前記導光部は、前記光出射口に配光制御部を備える
　前記（１）に記載の表示装置。
（３）
　前記配光制御部は、所定の凹凸構造で構成された
　前記（２）に記載の表示装置。
（４）
　前記配光制御部は、屈折率の異なる微粒子を分散して構成された
　前記（２）に記載の表示装置。
（５）
　前記導光部は、光源から出た光を反射させる光反射部を備える
　前記（１）乃至（４）のいずれかに記載の表示装置。
（６）
　前記光反射部は、金属膜、誘電体多層膜、または、高屈折率膜で構成される
　前記（５）に記載の表示装置。
（７）
　前記導光部は、前記導光部を補強する強度強化部を備える
　前記（１）乃至（６）のいずれかに記載の表示装置。
（８）
　前記強度強化部は、無機絶縁膜、金属膜、または、樹脂膜で構成される
　前記（７）に記載の表示装置。
（９）
　前記導光部は、光源から出た光を反射させる光反射部と、前記導光部を補強する強度強化部とを兼用する被膜を有する
　前記（１）乃至（４）のいずれかに記載の表示装置。
（１０）
　前記導光部は、集光光学系を有する
　前記（１）乃至（９）のいずれかに記載の表示装置。
（１１）
　前記集光光学系は、高屈折率層で構成される
　前記（１０）に記載の表示装置。
（１２）
　前記集光光学系は、反射板で構成される
　前記（１０）に記載の表示装置。
（１３）
　前記加飾層は、前記基板と貼り合わせる際に、前記導光部の貫通を補助する貫通補助部を備える
　前記（１）乃至（１０）のいずれかに記載の表示装置。
（１４）
　前記加飾層は、前記導光部の周辺を保護する保護部を備える
　前記（１）乃至（１０）のいずれかに記載の表示装置。
（１５）
　前記導光部の立体形状は、先端部が前記底部よりも小さくなる突起形状である
　前記（１）乃至（１０）のいずれかに記載の表示装置。
（１６）
　前記導光部は、側壁が前記上部から前記底部へ向かうに従って外側に拡がるテーパ形状を有する
　前記（１）乃至（１０）のいずれかに記載の表示装置。
（１７）
　２次元マトリクス状に複数配列して構成され、複数配列された他の表示装置と連携して一つの映像を表示する
　前記（１）乃至（１６）のいずれかに記載の表示装置。
（１８）
　基板上に複数の発光部を所定の配置ピッチで実装し、
　前記発光部の導光部を加飾層から貫通させて、前記基板と前記加飾層とを貼り合わせる
　表示装置の製造方法。
（１９）
　前記基板上に前記発光部の光源を実装した後、前記光源の周囲に導光部を形成することで、前記基板上に前記複数の発光部を所定の配置ピッチで実装する
　前記（１８）に記載の表示装置の製造方法。
（２０）
　前記基板上に前記導光部がパッケージ化された前記発光部の光源を実装することで、前記基板上に前記複数の発光部を所定の配置ピッチで実装する
　前記（１８）に記載の表示装置の製造方法。 Note that the technology according to the present disclosure can have the following configurations.
(1)
a substrate;
a plurality of light emitting units mounted on the substrate;
A decorative layer formed on the substrate other than the area where the light emitting unit is mounted,
The display device, wherein the light emitting section has a light guide section formed such that the area of the bottom portion, which is a connection surface with the substrate, is larger than the area of the upper portion, which is a light exit port.
(2)
The display device according to (1), wherein the light guide section includes a light distribution control section at the light exit port.
(3)
The display device according to (2), wherein the light distribution control section is configured with a predetermined concave-convex structure.
(4)
The display device according to (2), wherein the light distribution control section is configured by dispersing fine particles having different refractive indices.
(5)
The display device according to any one of (1) to (4), wherein the light guide section includes a light reflection section that reflects light emitted from a light source.
(6)
The display device according to (5), wherein the light reflecting portion is composed of a metal film, a dielectric multilayer film, or a high refractive index film.
(7)
The display device according to any one of (1) to (6), wherein the light guide section includes a strength reinforcing section that reinforces the light guide section.
(8)
The display device according to (7), wherein the strength reinforcing portion is composed of an inorganic insulating film, a metal film, or a resin film.
(9)
The light guide section according to any one of (1) to (4) above, which includes a coating that serves both as a light reflection section that reflects light emitted from a light source and as a strength reinforcing section that reinforces the light guide section. display device.
(10)
The display device according to any one of (1) to (9), wherein the light guide section has a condensing optical system.
(11)
The display device according to (10), wherein the condensing optical system is composed of a high refractive index layer.
(12)
The display device according to (10), wherein the condensing optical system is composed of a reflector.
(13)
The display device according to any one of (1) to (10), wherein the decorative layer includes a penetration assisting portion that assists penetration of the light guide portion when the decorative layer is attached to the substrate.
(14)
The display device according to any one of (1) to (10), wherein the decorative layer includes a protective portion that protects the periphery of the light guide portion.
(15)
The display device according to any one of (1) to (10), wherein the three-dimensional shape of the light guide portion is a projection shape whose tip portion is smaller than the bottom portion.
(16)
The display device according to any one of (1) to (10), wherein the light guide section has a tapered side wall that expands outward from the top toward the bottom.
(17)
The display device according to any one of (1) to (16) above, wherein a plurality of display devices are arranged in a two-dimensional matrix, and one image is displayed in cooperation with other display devices arranged in plurality.
(18)
A plurality of light emitting units are mounted on the substrate at a predetermined arrangement pitch,
A method of manufacturing a display device, wherein the light guide portion of the light emitting portion is passed through the decorative layer, and the substrate and the decorative layer are bonded together.
(19)
mounting the plurality of light emitting units on the substrate at a predetermined arrangement pitch by forming a light guide portion around the light source after mounting the light sources of the light emitting units on the substrate; A method of manufacturing the described display device.
(20)
The display device according to (18), wherein the plurality of light emitting units are mounted on the substrate at a predetermined arrangement pitch by mounting the light sources of the light emitting units in which the light guide units are packaged on the substrate. manufacturing method.
１：表示装置，１１：基板，１２：発光部，１３：加飾層，２１：光源，２２：導光部，３１：面積，３２：面積，４１：配光制御部，４２：光反射部，４３：強度強化部，４５：高屈折率層，４６：反射板，５１：ローラ，５２：ドライヤ，５３N：マグネット，５３S：マグネット，５４：治具，１００：表示装置，P1：配置ピッチ，P2：配置ピッチ，Ｓ１：底部，Ｓ２：上部 1: Display Device, 11: Substrate, 12: Light Emitting Part, 13: Decorative Layer, 21: Light Source, 22: Light Guide Part, 31: Area, 32: Area, 41: Light Distribution Control Part, 42: Light Reflecting Part , 43: strength reinforcing portion, 45: high refractive index layer, 46: reflector, 51: roller, 52: dryer, 53N: magnet, 53S: magnet, 54: jig, 100: display device, P1: arrangement pitch, P2: placement pitch, S1: bottom, S2: top

Claims (20)

  1. 　基板と、
    　前記基板上に実装された複数の発光部と、
    　前記発光部が実装された領域以外の前記基板上に形成された加飾層と
    　を備え、
    　前記発光部は、前記基板との接続面である底部の面積が、光出射口となる上部の面積よりも大きく形成された導光部を有する
    　表示装置。     a substrate;
    a plurality of light emitting units mounted on the substrate;
    A decorative layer formed on the substrate other than the area where the light emitting unit is mounted,
    The display device, wherein the light emitting section has a light guide section formed such that the area of the bottom portion, which is a connection surface with the substrate, is larger than the area of the upper portion, which is a light exit port.
  2. 　前記導光部は、前記光出射口に配光制御部を備える
    　請求項１に記載の表示装置。     The display device according to claim 1, wherein the light guide section includes a light distribution control section at the light exit port.
  3. 　前記配光制御部は、所定の凹凸構造で構成された
    　請求項２に記載の表示装置。     The display device according to claim 2, wherein the light distribution control section is configured with a predetermined concave-convex structure.
  4. 　前記配光制御部は、屈折率の異なる微粒子を分散して構成された
    　請求項２に記載の表示装置。     The display device according to claim 2, wherein the light distribution control section is configured by dispersing fine particles having different refractive indices.
  5. 　前記導光部は、光源から出た光を反射させる光反射部を備える
    　請求項１に記載の表示装置。     The display device according to claim 1, wherein the light guide section includes a light reflection section that reflects light emitted from a light source.
  6. 　前記光反射部は、金属膜、誘電体多層膜、または、高屈折率膜で構成される
    　請求項５に記載の表示装置。     6. The display device according to claim 5, wherein the light reflecting portion is composed of a metal film, a dielectric multilayer film, or a high refractive index film.
  7. 　前記導光部は、前記導光部を補強する強度強化部を備える
    　請求項１に記載の表示装置。     The display device according to claim 1, wherein the light guide section includes a strength reinforcing section that reinforces the light guide section.
  8. 　前記強度強化部は、無機絶縁膜、金属膜、または、樹脂膜で構成される
    　請求項７に記載の表示装置。     8. The display device according to claim 7, wherein the strength reinforcing portion is composed of an inorganic insulating film, a metal film, or a resin film.
  9. 　前記導光部は、光源から出た光を反射させる光反射部と、前記導光部を補強する強度強化部とを兼用する被膜を有する
    　請求項１に記載の表示装置。     2. The display device according to claim 1, wherein the light guide section has a film that serves both as a light reflection section that reflects light emitted from a light source and as a strength reinforcing section that reinforces the light guide section.
  10. 　前記導光部は、集光光学系を有する
    　請求項１に記載の表示装置。     The display device according to claim 1, wherein the light guide section has a condensing optical system.
  11. 　前記集光光学系は、高屈折率層で構成される
    　請求項１０に記載の表示装置。     11. The display device according to claim 10, wherein the condensing optical system is composed of a high refractive index layer.
  12. 　前記集光光学系は、反射板で構成される
    　請求項１０に記載の表示装置。     11. The display device according to claim 10, wherein the condensing optical system is composed of a reflector.
  13. 　前記加飾層は、前記基板と貼り合わせる際に、前記導光部の貫通を補助する貫通補助部を備える
    　請求項１に記載の表示装置。     2. The display device according to claim 1, wherein the decorative layer includes a penetration assisting portion that assists penetration of the light guide portion when the decorative layer is attached to the substrate.
  14. 　前記加飾層は、前記導光部の周辺を保護する保護部を備える
    　請求項１に記載の表示装置。     The display device according to claim 1, wherein the decorative layer includes a protective portion that protects the periphery of the light guide portion.
  15. 　前記導光部の立体形状は、先端部が前記底部よりも小さくなる突起形状である
    　請求項１に記載の表示装置。     2. The display device according to claim 1, wherein the three-dimensional shape of the light guide portion is a projection shape whose tip portion is smaller than the bottom portion.
  16. 　前記導光部は、側壁が前記上部から前記底部へ向かうに従って外側に拡がるテーパ形状を有する
    　請求項１に記載の表示装置。     2. The display device according to claim 1, wherein the light guide section has a tapered side wall that expands outward from the top toward the bottom.
  17. 　２次元マトリクス状に複数配列して構成され、複数配列された他の表示装置と連携して一つの映像を表示する
    　請求項１に記載の表示装置。     2. The display device according to claim 1, wherein a plurality of display devices are arranged in a two-dimensional matrix, and one image is displayed in cooperation with other display devices arranged in plurality.
  18. 　基板上に複数の発光部を所定の配置ピッチで実装し、
    　前記発光部の導光部を加飾層から貫通させて、前記基板と前記加飾層とを貼り合わせる
    　表示装置の製造方法。     A plurality of light emitting units are mounted on the substrate at a predetermined arrangement pitch,
    A method of manufacturing a display device, wherein the light guide portion of the light emitting portion is passed through the decorative layer, and the substrate and the decorative layer are bonded together.
  19. 　前記基板上に前記発光部の光源を実装した後、前記光源の周囲に導光部を形成することで、前記基板上に前記複数の発光部を所定の配置ピッチで実装する
    　請求項１８に記載の表示装置の製造方法。     19. The plurality of light emitting units are mounted on the substrate at a predetermined arrangement pitch by forming a light guide portion around the light source after mounting the light sources of the light emitting units on the substrate. display device manufacturing method.
  20. 　前記基板上に前記導光部がパッケージ化された前記発光部の光源を実装することで、前記基板上に前記複数の発光部を所定の配置ピッチで実装する
    　請求項１８に記載の表示装置の製造方法。     19. The display device according to claim 18, wherein the plurality of light emitting units are mounted on the substrate at a predetermined arrangement pitch by mounting the light sources of the light emitting units in which the light guide units are packaged on the substrate. Production method.
PCT/JP2022/021323 2021-06-04 2022-05-25 Display device and method for manufacturing same WO2022255175A1 (en)

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS501983U (en) * 1973-05-02 1975-01-10
JPH09197990A (en) * 1996-01-22 1997-07-31 Teikoku Tsushin Kogyo Co Ltd Electronic component embedded molding
JP2001125517A (en) * 1999-10-27 2001-05-11 Mitsubishi Electric Corp Scope for light emitting diode and light emitting diode display
US20070159814A1 (en) * 2006-01-10 2007-07-12 Valinge Innovation Ab Floor light
JP2009015024A (en) * 2007-07-05 2009-01-22 Takasho Co Ltd Door plate with illumination
JP2010239021A (en) * 2009-03-31 2010-10-21 Koha Co Ltd Light source module
JP2019215956A (en) * 2018-06-11 2019-12-19 ミネベアミツミ株式会社 Planar lighting device

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS501983U (en) * 1973-05-02 1975-01-10
JPH09197990A (en) * 1996-01-22 1997-07-31 Teikoku Tsushin Kogyo Co Ltd Electronic component embedded molding
JP2001125517A (en) * 1999-10-27 2001-05-11 Mitsubishi Electric Corp Scope for light emitting diode and light emitting diode display
US20070159814A1 (en) * 2006-01-10 2007-07-12 Valinge Innovation Ab Floor light
JP2009015024A (en) * 2007-07-05 2009-01-22 Takasho Co Ltd Door plate with illumination
JP2010239021A (en) * 2009-03-31 2010-10-21 Koha Co Ltd Light source module
JP2019215956A (en) * 2018-06-11 2019-12-19 ミネベアミツミ株式会社 Planar lighting device

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