WO2022255175A1 - 表示装置およびその製造方法 - Google Patents

表示装置およびその製造方法 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
English (en)
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/ja

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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.

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  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Illuminated Signs And Luminous Advertising (AREA)
PCT/JP2022/021323 2021-06-04 2022-05-25 表示装置およびその製造方法 WO2022255175A1 (ja)

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JPS501983U (enrdf_load_stackoverflow) * 1973-05-02 1975-01-10
JPH09197990A (ja) * 1996-01-22 1997-07-31 Teikoku Tsushin Kogyo Co Ltd 電子部品埋設成形品
JP2001125517A (ja) * 1999-10-27 2001-05-11 Mitsubishi Electric Corp 発光ダイオード用スコープ及び発光ダイオード表示器
US20070159814A1 (en) * 2006-01-10 2007-07-12 Valinge Innovation Ab Floor light
JP2009015024A (ja) * 2007-07-05 2009-01-22 Takasho Co Ltd 照明付き表札
JP2010239021A (ja) * 2009-03-31 2010-10-21 Koha Co Ltd 光源モジュール
JP2019215956A (ja) * 2018-06-11 2019-12-19 ミネベアミツミ株式会社 面状照明装置

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS501983U (enrdf_load_stackoverflow) * 1973-05-02 1975-01-10
JPH09197990A (ja) * 1996-01-22 1997-07-31 Teikoku Tsushin Kogyo Co Ltd 電子部品埋設成形品
JP2001125517A (ja) * 1999-10-27 2001-05-11 Mitsubishi Electric Corp 発光ダイオード用スコープ及び発光ダイオード表示器
US20070159814A1 (en) * 2006-01-10 2007-07-12 Valinge Innovation Ab Floor light
JP2009015024A (ja) * 2007-07-05 2009-01-22 Takasho Co Ltd 照明付き表札
JP2010239021A (ja) * 2009-03-31 2010-10-21 Koha Co Ltd 光源モジュール
JP2019215956A (ja) * 2018-06-11 2019-12-19 ミネベアミツミ株式会社 面状照明装置

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