WO2023038096A1 - 表示装置およびマルチディスプレイ - Google Patents
表示装置およびマルチディスプレイ Download PDFInfo
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- WO2023038096A1 WO2023038096A1 PCT/JP2022/033800 JP2022033800W WO2023038096A1 WO 2023038096 A1 WO2023038096 A1 WO 2023038096A1 JP 2022033800 W JP2022033800 W JP 2022033800W WO 2023038096 A1 WO2023038096 A1 WO 2023038096A1
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- display
- wiring
- display device
- side wiring
- substrate
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- G—PHYSICS
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- G—PHYSICS
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- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
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- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/33—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being semiconductor devices, e.g. diodes
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- G09F9/40—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character is selected from a number of characters arranged one beside the other, e.g. on a common carrier plate
Definitions
- the present disclosure relates to display devices and multi-displays (composite display devices).
- Patent Document 1 A conventional display device and multi-display are described in Patent Document 1, for example.
- a multi-display of the present disclosure comprises: a first substrate having a first display surface and a first side surface continuous therewith; a first display unit positioned on the first display surface; a first display device having a first side wiring overlying; a second substrate having a second display surface and a second side surface continuous therewith; a second display portion positioned on the second display surface; and a second side surface positioned from the second side surface to the second display surface a second display device having wiring, The first side surface and the second side surface are arranged close to each other and face each other, The first side wiring and the second side wiring are positioned so as not to face each other.
- a display device of the present disclosure includes a substrate having a display surface, a side surface connected to the display surface, and an opposite side surface opposite to the side surface; a display unit located on the display surface; side wirings positioned from the side surface to the display surface; an opposite side wiring located from the first opposite side to the display surface, The side wiring and the opposite side wiring are not opposed to each other.
- FIG. 1 is a plan view showing a multi-display according to an embodiment of the present disclosure
- FIG. FIG. 2 is a plan view showing an enlarged main part of the multi-display of FIG. 1
- FIG. 3 is a cross-sectional view taken along a cutting plane line A1-A2 in FIG. 2
- FIG. 2 is a plan view showing an enlarged main part of a modification of the multi-display of FIG. 1
- FIG. 5 is a cross-sectional view taken along the cutting plane line B1-B2 in FIG. 4
- FIG. 2 is a plan view showing an enlarged main part of a modification of the multi-display of FIG. 1
- FIG. 2 is a plan view showing an enlarged main part of a modification of the multi-display of FIG. 1;
- FIG. 10 is a plan view showing a multi-display according to another embodiment of the present disclosure;
- FIG. 9 is a plan view showing an enlarged main part of the multi-display of FIG. 8;
- FIG. 10 is a cross-sectional view taken along a cutting plane line C1-C2 in FIG. 9;
- FIG. 9 is a plan view showing an enlarged main part of a modification of the multi-display of FIG. 8;
- FIG. 10 is a plan view showing a multi-display according to another embodiment of the present disclosure;
- 1 is a plan view showing the configuration of a display device according to an embodiment of the present disclosure;
- FIG. FIG. 14 is a plan view showing a mother substrate for manufacturing the display device of FIG. 13;
- Patent Document 1 proposes a composite and large-sized display device, a so-called multi-display, by combining a plurality of display devices.
- a conventional multi-display includes, for example, a wiring La such as a side wiring provided on the joint side surface (tiling part side surface) of the display device A and the display device B adjacent to it, and a wiring La such as a side wiring provided on the joint side surface of the display device B
- the wiring Lb may come into contact with each other and cause an electrical short circuit. Further, when the wiring La and the wiring Lb come into contact with each other or collide with each other, the wiring La and the wiring Lb may be damaged, broken, peeled off, or otherwise deteriorated.
- the wiring La and the side surface of the display device B contact or collide, or when the wiring Lb and the side surface of the display device A contact or collide, the wiring La and the wiring Lb may be damaged or damaged. , and deterioration such as peeling may occur. Further, if the state of contact between the wiring La and the side surface of the display device B and the state of contact between the wiring Lb and the side surface of the display device A continue, displacement due to vibration, thermal expansion, etc., rubbing of the contact portion, pressure, etc. may occur. , stress is applied to the contact portion, and deterioration may occur in the same manner.
- the gap between the display device A and the display device B tends to be large, and the joint portion (tiling portion) between the display device A and the display device B is easily visible. rice field. As a result, the operational reliability and long-term reliability of the multi-display are degraded, and the display quality of the multi-display is degraded.
- FIG. 1 shows main components and the like of the display device and the multi-display according to the embodiment of the present disclosure.
- the display device and multi-display according to the embodiments of the present disclosure may have known configurations such as circuit boards, wiring conductors, control ICs, LSIs, etc., which are not shown.
- Each figure referred to below is schematic, and the shape, arrangement position, size, etc. of the constituent members of the display device and the multi-display are not necessarily illustrated accurately.
- FIGS. 4, 6 and 7 are diagrams relating to multi-displays according to various embodiments of the present disclosure. 1, 2, 4, 6, 7, 8, and 12 omit the illustration of the insulating substrate as an insulating layer laminate having internal wiring, which is located on the first surface of the substrate.
- FIG. 2 is an enlarged view of part A of FIG.
- the plan views shown in FIGS. 4, 6 and 7 correspond to the plan view shown in FIG.
- the multi-display 200 of this embodiment includes a first display device 1 and a second display device 2.
- the first display device 1 includes a first substrate 31 , a first display section 4 a and first side wirings 5 .
- the second display device 2 includes a second substrate 32 , a second display portion 4 b and second side wirings 6 .
- the first display device 1 and the second display device 2 are collectively referred to as "display device D”
- the first substrate 31 and the second substrate 32 are collectively referred to as "substrate 3”
- the portion 4a and the second display portion 4b may be collectively referred to as the "display portion 4".
- first display surface 3a1 of the first substrate 31 and the second display surface 3a2 of the second substrate 32 may be collectively referred to as "display surface 3a".
- the first counter-display surface 3b1 of the first substrate 31 and the second counter-display surface 3b2 of the second substrate 32 may be collectively referred to as "anti-display surface 3b”.
- the first side surface 3c1 of the first substrate 31 may be referred to as “side surface 3c”.
- the first opposite side surface 3d1 of the first substrate 31 and the second opposite side surface 3d2 of the second substrate 32 may be collectively referred to as "opposite side surface 3d”.
- the first driving section 15a of the first display device 1 and the second driving section 15b of the second display device 2 may be collectively referred to as "the driving section 15".
- the display surface 3a is the front surface of the substrate 3 and the anti-display surface 3b is the back surface of the substrate 3. It can also be said that the opposite side surface 3d of the substrate 3 is a side surface (opposite side surface) on the side facing the side surface 3c.
- the multi-display 200 of this embodiment includes a first substrate 31 having a first display surface 3a1 and a first side surface 3c1 connected thereto, and a first display portion 4a located on the first display surface 3a1. , a first side wiring 5 located from the first side surface 3c1 to the first display surface 3a1, a second display surface 3a2, and a second side surface (second opposite side surface) connected to the second display surface 3a2. 3d2, the second display portion 4b positioned on the second display surface 3a2, and the second side wiring 6 positioned from the second side surface 3d2 to the second display surface 3a2. 2 display device 2;
- the first side surface 3c1 and the second side surface 3d2 are arranged close to each other and opposed to each other, and the first side surface wiring 5 and the second side surface wiring 6 are not opposed to each other.
- the above configuration has the following effects.
- the first display device 1 and the second display device 2 can be arranged close to each other. Therefore, even if the pixel pitches are relatively narrow, the pixel pitch of the multi-display 200 can be suppressed from fluctuating at the connecting portion between the first display device 1 and the second display device 2. As a result, the display quality of multi-display 200 is improved. Also, it is possible to prevent the first side wiring 5 and the second side wiring 6 from coming into contact with each other and causing an electrical short circuit. In addition, the first side wiring 5 and the second side wiring 6 are prevented from being damaged, broken, and peeled off due to contact and collision between the first side wiring 5 and the second side wiring 6. be able to.
- the first side surface 3c1 of the first substrate 31 is a side surface (bonding portion side surface) to which the second side surface (second opposite side surface) 3d2 of the second substrate 32 is bonded. (Coupling part side surface), but this configuration is not necessarily required.
- the side surface adjacent to the second side surface 3d2 of the second substrate 32 may be the joint side surface.
- the side surface 3c2 of the second substrate 32 is a non-bonded side surface opposite to the second side surface 3d2.
- the substrate 3 may have, for example, a rectangular plate shape including a square plate shape and a rectangular plate shape, a parallelogram plate shape, a trapezoidal plate shape, a hexagonal plate shape, an octagonal plate shape, and other shapes. may be In the following description, the substrate 3 is assumed to have a rectangular plate shape.
- the substrate 3 in one display device includes a display surface (one main surface) 3a, an opposite display surface (the other main surface) 3b on the side opposite to the display surface 3a, a side surface 3c connected to the display surface 3a, and a side surface 3c on the opposite side to the side surface 3c. Includes opposite side 3d.
- the first side surface 3c1 of the first substrate 31 in the first display device 1 corresponds to the side surface 3c of the substrate 3
- the second side surface 3d2 of the second substrate 32 in the second display device 2 corresponds to It corresponds to the opposite side surface 3 d of the substrate 3 .
- the side surface 3 c 2 of the second substrate 32 in the second display device 2 corresponds to the side surface 3 c of the substrate 3 .
- the second substrate 32 is arranged in the opposite direction to the first substrate 31 in plan view. In other words, it can be said that the second substrate 32 is rotated by 180° with respect to the first substrate 31 .
- the arrangement relationship of the light emitting elements 71r, 71g, and 71b arranged on the first display surface 3a1 of the first substrate 31 and the light emission arranged on the second display surface 3a2 of the second substrate 32 The arrangement relationship of the elements 71r, 71g, and 71b may be the same. Therefore, the first side surface 3c1 of the first substrate 31 in the first display device 1 corresponds to the side surface 3c of the substrate 3 and is also the joint side surface.
- a second side surface 3d2 of the second substrate 32 in the second display device 2 corresponds to the opposite side surface 3d of the substrate 3 and is a joint side surface.
- the side surface 3c and the opposite side surface 3d include the long side of the display surface 3a
- the side surface 3c and the opposite side surface 3d may include the short side of the display surface 3a.
- the multi-display 200 may include the base substrate 17 (shown in FIG. 3).
- the first display device 1 may be fixed on the base substrate 17 so that the first counter-display surface 3 b 1 of the first substrate 31 faces the one main surface 17 a of the base substrate 17 .
- the second display device 2 may be fixed on the base substrate 17 so that the second non-display surface 3 b 2 of the second substrate 32 faces the one main surface 17 a of the base substrate 17 .
- the first display device 1 and the second display device 2 may be fixed to one main surface 17a of the base substrate 17 with a fixing member (not shown) such as an adhesive or screws.
- the first display device 1 is fitted in a frame, and the frame may be adhered and fixed to the base substrate 17 with an adhesive, and the frame may be attached to the base by screws, fitting members, locking members, or the like. It may be mechanically fixed to the substrate 17 .
- the second display device 2 may also be fixed to the base substrate 17 by similar fixing means.
- the first display device 1 may be provided with heat radiation members such as cooling pipes and heat radiation fins on the side of the first substrate 31 opposite to the display surface 3b1.
- the cooling pipes may be configured to pass or circulate through the pipes a coolant such as air, water, or the like.
- the second display device 2 may also be provided with a similar heat dissipating member.
- first display surface 3a1 and the second display surface 3a2 may be flush with each other. Also, in multi-display 200, first display surface 3a1 and second display surface 3a2 may be non-parallel.
- the display surfaces 3a of a large number of display devices may constitute a generally convex curved surface or a concave curved surface.
- the substrate 3 may be made of, for example, a glass material, a ceramic material, a resin material, or the like.
- Glass materials used for the substrate 3 include, for example, borosilicate glass, crystallized glass, and quartz. Ceramic materials used for the substrate 3 include, for example, alumina (Al 2 O 3 ), zirconia (ZrO 2 ), silicon nitride (Si 3 N 4 ), silicon carbide (SiC), and aluminum nitride (AlN).
- Examples of the resin material used for the substrate 3 include epoxy resin, polyimide resin, polyamide resin, acrylic resin, and polycarbonate resin.
- the substrate 3 may be made of, for example, a metal material, an alloy material, a semiconductor material, or the like.
- Metal materials used for the substrate 3 include, for example, aluminum (Al), magnesium (Mg) (in particular, high-purity magnesium with a purity of 99.95% or more), zinc (Zn), tin (Sn), and copper (Cu). , chromium (Cr), nickel (Ni), and the like. Alloy materials used for the substrate 3 include duralumin (Al--Cu alloy, Al--Cu---Mg alloy, Al--Zn--Mg--Cu alloy) which is an aluminum alloy containing aluminum as a main component, and magnesium as a main component.
- Magnesium alloy Mg--Al alloy, Mg--Zn alloy, Mg--Al--Zn alloy
- titanium boride stainless steel
- Cu--Zn alloy and the like.
- Semiconductor materials used for the substrate 3 include silicon (Si), germanium (Ge), gallium arsenide (GaAs), and the like.
- the display unit 4 is positioned on the display surface 3a of the substrate 3.
- the display unit 4 includes multiple pixels 7 .
- the plurality of pixels 7 may be arranged in a matrix arrangement in plan view.
- the display section 4 may include an insulating substrate 8 located on the display surface 3a and a plurality of pixels 7 located in and on the insulating substrate 8, as shown in FIG. 3, for example.
- the insulating substrate 8 may have a single layer structure consisting of a single insulating layer, or may have a laminated structure consisting of a plurality of laminated insulating layers. In this embodiment, for example, as shown in FIG. 3, the insulating substrate 8 has a laminated structure in which a plurality of insulating layers 81, 82, 83 are laminated.
- the insulating layers 81, 82, 83 may be made of, for example , silicon oxide ( SiO2 ), silicon nitride ( Si3N4 ), or the like.
- the insulating substrate 8 may include an insulating layer made of an organic resin such as an acrylic resin layer or a polycarbonate resin layer.
- a plurality of pixels 7 may each include a light emitting element 71 and a pixel circuit 72 that drives the light emitting element 71 .
- the light emitting element 71 may be a light emitting element such as a light emitting diode (LED) element or a semiconductor laser (Laser Diode: LD) element.
- the light emitting element 71 may be a Micro Light Emitting Diode ( ⁇ LED) element.
- ⁇ LED Micro Light Emitting Diode
- the light emitting element 71 has a rectangular shape with a side length of about 1 ⁇ m to 100 ⁇ m or about 5 ⁇ m to 20 ⁇ m when viewed from the direction perpendicular to the light emitting surface. may It should be noted that " ⁇ " means to and below, and the same shall apply hereinafter.
- each pixel 7 includes a plurality of light emitting elements 71, as shown in FIG. 1, for example.
- the plurality of light emitting elements 71 may be, for example, a light emitting element 71r that emits red light, a light emitting element 71g that emits green light, and a light emitting element 71b that emits blue light. This enables the multi-display 200 to perform full-color gradation display.
- Each pixel 7 may have at least one of the light emitting elements 71 that emit yellow light and the light emitting elements 71 that emit white light in addition to the light emitting elements 71r, 71g, and 71b. This makes it possible to improve the color rendering properties and color reproducibility of the multi-display 200 .
- Each pixel 7 may have a light-emitting element 71 that emits orange light, red-orange light, red-violet light, or violet light instead of the light-emitting element 71r that emits red light.
- Each pixel may have a light-emitting element 71 that emits yellow-green light instead of the light-emitting element 71g that emits green light.
- the pixel circuit 72 includes thin film transistors (TFTs), wiring conductors, and the like. In FIG. 3, only TFTs included in the pixel circuit 72 are illustrated.
- a TFT has a semiconductor film made of, for example, amorphous silicon (a-Si), low-temperature polysilicon (LTPS), or the like, and has three terminals of a gate electrode, a source electrode, and a drain electrode. There may be.
- the TFT functions as a switching element that switches between conduction and non-conduction between the source electrode and the drain electrode according to the voltage applied to the gate electrode.
- the pixel circuit 72 may be arranged on the display surface 3 a of the substrate 3 or may be arranged between the plurality of insulating layers 81 , 82 , 83 of the insulating substrate 8 .
- the pixel circuit 72 may be formed using a thin film formation method such as a chemical vapor deposition (CVD) method.
- the light emitting element 71 When the light emitting element 71 is a two-terminal element such as a ⁇ LED element, the light emitting element 71 may be flip-chip connected to an anode electrode 84 and a cathode electrode 85 located on the insulating substrate 8 .
- the surfaces of the anode electrode 84 and the cathode electrode 85 facing the light emitting element 71 may be covered with a transparent conductor such as indium tin oxide (ITO) or indium zinc oxide (IZO).
- ITO indium tin oxide
- IZO indium zinc oxide
- the light emitting element 71, the anode electrode 84 and the cathode electrode 85 are flip-chip connected using a conductive connection member such as an anisotropic conductive film (ACF), solder balls, metal bumps, or conductive adhesive. may be electrically and mechanically connected by
- the light emitting element 71, the anode electrode 84 and the cathode electrode 85 may be electrically connected using
- the substrate 3 is made of a metal material, an alloy material, or a semiconductor material, silicon oxide (SiO 2 ), silicon nitride (Si 3 N 4 ), or the like is placed between the display surface 3a of the substrate 3 and the display section 4.
- An insulating layer may be disposed. Accordingly, it is possible to prevent the TFTs and the wiring conductors of the pixel circuit 72 from being short-circuited to each other through the substrate 3 .
- the first display device 1 may include a first wiring 9 located on the first display surface 3a1.
- the first wiring 9 may be positioned at the edge of the first side surface 3c1.
- the first wiring 9 may be positioned within the insulating base 8 or may be positioned on the insulating base 8 .
- the first wiring 9 may be a single wiring located within the insulating substrate 8, for example, as shown in FIG.
- the wirings 91 and 92 may be used.
- the first wiring 9 may be electrically connected to at least one of the multiple pixels 7 of the first display device 1 .
- One first wiring 9 may be connected in parallel to a plurality of pixels 7 of the first display device 1 .
- the plurality of pixels 7 may be arranged in the row direction or in the column direction.
- Each of the plurality of first wirings 9 may be connected in parallel to the plurality of pixels 7 arranged in each of the plurality of rows.
- Each of the plurality of first wirings 9 may be connected in parallel to the plurality of pixels 7 arranged in each of the plurality of columns.
- the first wiring 9 may be a wiring for supplying a power supply voltage to at least one of the plurality of pixels 7 of the first display device 1.
- the power supply voltage may be, for example, the first power supply voltage VDD of approximately 10V to 15V, or may be the second power supply voltage VSS of approximately 0V to 3V, for example.
- the second display device 2 may include a second wiring 10 located on the second display surface 3a2.
- the second wiring 10 may be positioned at the edge of the second side surface 3d2.
- the second wiring 10 may be positioned within the insulating substrate 8 or may be positioned on the insulating substrate 8 .
- the second wiring 10 may be a single wiring positioned within the insulating substrate 8 or a plurality of wirings positioned between different layers of the plurality of insulating layers 81 , 82 , 83 .
- the second wiring 10 may be electrically connected to at least one of the multiple pixels 7 of the second display device 2 .
- a single second wiring 10 may be connected in parallel to a plurality of pixels 7 of the second display device 2 .
- the plurality of pixels 7 may be arranged in the row direction or in the column direction.
- Each of the plurality of second wirings 10 may be connected in parallel to the plurality of pixels 7 arranged in each of the plurality of rows.
- Each of the plurality of second wirings 10 may be connected in parallel to the plurality of pixels 7 arranged in each of the plurality of columns.
- the second wiring 10 may be a wiring for supplying a power supply voltage (first power supply voltage VDD or second power supply voltage VSS) to at least one of the plurality of pixels 7 of the second display device 2.
- a wiring for supplying a light emission control signal to at least one of the plurality of pixels 7 of the second display device 2 may be used.
- the first wiring 9 and the second wiring 10 may be composed of, for example, Mo/Al/Mo, MoNd/AlNd/MoNd, or the like.
- Mo/Al/Mo indicates a laminated structure in which an Al layer is laminated on a Mo layer and a Mo layer is laminated on the Al layer. The same applies to others.
- the first wiring 9 may have a wiring pad 9b at the end 9a on the side of the first side surface 3c1.
- the second wiring 10 may have a wiring pad 10b at the end 10a on the side of the second side surface 3d2.
- the wiring pads 9b and 10b may be made of a transparent conductor such as ITO or IZO.
- the first side wiring 5 is located from the first side surface 3c1 to the first display surface 3a1.
- the second side wiring 6 is located from the second side surface 3d2 to the second display surface 3a2.
- first side wiring 51 the first side wiring 5 of the first display device 1
- second side wiring 6 of the second display device 2 may be referred to as “second side wiring 62”. is sometimes described.
- the first side wiring 51 may be connected to the wiring pad 9b and electrically connected to the first wiring 9, as shown in FIG. 3, for example. Furthermore, as shown in FIG. 3, for example, the first side wiring 51 is positioned from the first side surface 3c1 to the first counter-display surface 3b1. It may be connected to the first drive section 15a (shown in FIG. 1) located on the first counter-display surface 3b1. The first drive unit 15 a may generate power supply voltages and emission control signals to be supplied to the plurality of pixels 7 of the first display device 1 . Further, the back wiring 14 may be covered with a protective layer 21 as shown in FIG. 3, for example.
- the protective layer 21 may be made of an inorganic insulating material such as silicon oxide (SiO 2 ) or silicon nitride (Si 3 N 4 ), or may be made of an organic insulating material such as acrylic resin or epoxy resin. good too.
- an inorganic insulating material such as silicon oxide (SiO 2 ) or silicon nitride (Si 3 N 4 )
- an organic insulating material such as acrylic resin or epoxy resin. good too.
- the second side wiring 62 may be connected to the wiring pad 10 b and electrically connected to the second wiring 10 . Further, the second side wiring 62 is located from the second side surface 3d2 to the second counter-display surface 3b2, and extends on the second counter-display surface 3b2 via the back surface wiring 14 located on the second counter-display surface 3b2. It may be connected to a second drive portion 15b located (shown in FIG. 1). The second driving section 15b may generate power supply voltages and emission control signals to be supplied to the plurality of pixels 7 of the second display device 2 .
- the first side wiring 5 is formed by applying a conductive paste containing conductive particles such as Ag, Cu, Al, stainless steel, uncured resin components, an alcoholic solvent, water, etc. from the side surface 3c of the substrate 3 to the display surface 3a and the opposite side. It may be formed by a method such as a heating method, a photo-curing method in which the coating is cured by irradiation with light such as ultraviolet light, or a photo-curing heating method, after applying it to a desired portion on the display surface 3b.
- the first side wiring 5 may be formed by a thin film formation method such as plating, vapor deposition, or CVD. A groove may be formed in advance in the portion of the side surface 3c where the first side wiring 5 is to be formed.
- the conductive paste that forms the first side wiring 5 can be easily arranged on the desired portion of the side surface 3c. Since the method of forming the second side wiring 6 is the same as the method of forming the first side wiring 5, the description thereof is omitted.
- the first side wiring 51 may have a height (thickness) h1 from the first side surface 3c1 of about 5 ⁇ m to 50 ⁇ m, or about 10 ⁇ m to 30 ⁇ m, in plan view.
- the thickness may be about 15 ⁇ m to 20 ⁇ m.
- the second side wiring 62 may have a height (thickness) h2 from the second side surface 3d2 in a plan view of, for example, about 5 ⁇ m to 50 ⁇ m, about 10 ⁇ m to 30 ⁇ m, or about 15 ⁇ m to 30 ⁇ m. It may be about 20 ⁇ m.
- the height h1 of the first side wiring 51 and the height of the second side wiring 62 h2 may be a height including the thickness of the overcoat layer.
- the first side wiring 5 and the second side wiring 6 may have a multi-layer laminated structure. This allows their thickness to be increased to reduce their resistance. In addition, it becomes easy to adjust the resistance of the first side wiring 5 and the resistance of the second side wiring 6 to desired values.
- the step of applying and firing the conductive paste may be performed multiple times.
- the formation process may be similarly performed plural times.
- the thickness of the upper layer side of the first side wiring 5 and the second side wiring 6 of the multilayer structure may be thinner than the thickness of the lower layer.
- the second layer may be thinner than the first layer (lower layer).
- the thickness of the second layer may be 0.1 times or more and less than 1 time the thickness of the first layer, but the thickness is not limited to this range.
- the first side surface 3c1 of the first display device 1 and the second side surface 3d2 of the second display device 2 are arranged in close proximity to each other.
- the first side surface 3c1 and the second side surface 3d2 may be parallel.
- a distance d between the first side surface 3c1 and the second side surface 3d2 may be equal to or greater than the height h1 of the first side wiring 51 and may be equal to or greater than the height h2 of the second side wiring 62.
- the distance d may be approximately 100 ⁇ m or less, or may be approximately 50 ⁇ m or less.
- the distance d may be about 2 ⁇ h1 or less or 2 ⁇ h2 or less.
- the first side wiring 51 of the first display device 1 and the second side wiring 62 of the second display device 2 are positioned so as not to face each other.
- the first side surface wiring 51 and the second side surface wiring 62 are positioned so as not to overlap each other.
- the pixel pitch of the multi-display 200 does not fluctuate at the junction between the first display device 1 and the second display device 2. can be suppressed, and as a result, the display quality of the multi-display 200 can be improved.
- the pixel pitch may be, for example, approximately 40 ⁇ m to 400 ⁇ m, approximately 40 ⁇ m to 120 ⁇ m, approximately 60 ⁇ m to 100 ⁇ m, or approximately 80 ⁇ m.
- the multi-display 200 is positioned so that the first side wiring 51 and the second side wiring 62 do not face each other, even if vibration and thermal expansion occur during use of the multi-display 200, the first side wiring 51 and the second side wiring 62 do not Collision between the side wiring 51 and the second side wiring 62 can be suppressed. As a result, damage or peeling of the first side wiring 51 and the second side wiring 62 can be suppressed, and the operational reliability and long-term reliability of the multi-display 200 can be improved.
- the first side wiring 51 and the second side wiring 62 may be separated from each other with an interval (g) in the direction along the first side surface 3c1 (second side surface 3d2) in plan view.
- the interval g is equal to or larger than the width (width w) of one of the first side wiring 51 or the second side wiring 62 in the direction along the first side surface 3c1 (second side surface 3d2). good too. In this case, contact or collision between the first side wiring 51 and the second side wiring 62 can be more reliably suppressed.
- the interval g may be approximately 1 to 10 times the width w, but is not limited to this range.
- the multi-display 200 may have a configuration in which the first display device 1 includes a plurality of first side wirings 51 and the second display device 2 includes a plurality of second side wirings 62, as shown in FIG. 1, for example. .
- the plurality of first side wirings 51 and the plurality of second side wirings 62 are positioned so as not to face each other.
- the display quality of multi-display 200 can be improved, and the operational reliability and long-term reliability of multi-display 200 can be improved.
- the first side wirings 51 adjacent to each other may be separated from each other by about twice the pixel pitch of the first display device 1 or more, and the second side wirings 62 adjacent to each other may be separated from each other by the pixel pitch of the second display device 2 . They may be separated by about twice the pixel pitch or more. This facilitates routing of wiring in the peripheral edge portion of the first substrate 31 and the peripheral edge portion of the second substrate 32 .
- the first side wiring 51 may be out of contact with the second side 3d2, and the second side wiring 62 may be out of contact with the first side 3c1.
- the distance d between the first side surface 3c1 and the second side surface 3d2 may be larger than the height h1 of the first side surface wiring 51 and larger than the height h2 of the second side surface wiring 62.
- This configuration can prevent first side wiring 51 from colliding with second side 3d2 and second side wiring 62 from colliding with first side 3c1 during use of multi-display 200 .
- damage or peeling of the first side wiring 51 and the second side wiring 62 can be suppressed, and the operational reliability and long-term reliability of the multi-display 200 can be improved.
- the multi-display 200 may include a first protective layer 11 covering the first side wiring 51 and a second protective layer 12 covering the second side wiring 62, as shown in FIGS. Thereby, breakage or peeling of the first side wiring 51 and the second side wiring 62 can be further suppressed, and the operational reliability and long-term reliability of the multi-display 200 can be further improved.
- the first protective layer 11 may be positioned from the first side surface 3c1 to the first display surface 3a1. For example, as shown in FIG. may not extend to the center side of the first display surface 3a1 beyond the wiring pad 9b. With this configuration, it is possible to prevent the first protective layer 11 from interfering with the mounting of the light emitting element 71 (the light emitting element 71r in FIG. 4), so that the light emitting element 71 can be efficiently mounted.
- the second protective layer 12 may be positioned from the second side surface 3d2 to the second display surface 3a2. For example, as shown in FIG. may not extend to the center side of the second display surface 3a2 beyond the wiring pad 10b. As a result, it is possible to prevent the second protective layer 12 from interfering with the mounting of the light emitting element 71, so that the light emitting element 71 can be mounted efficiently.
- the first protective layer 11 and the second protective layer 12 may be made of an insulating material.
- the first protective layer 11 and the second protective layer 12 may be made of an inorganic insulating material, or may be made of an organic insulating material.
- inorganic insulating materials used for the first protective layer 11 and the second protective layer 12 include silicon oxide (SiO 2 ) and silicon nitride (Si 3 N 4 ).
- organic insulating materials used for the first protective layer 11 and the second protective layer 12 include acrylic resins, epoxy resins, and polycarbonate resins.
- the first protective layer 11 may be out of contact with the second side surface 3d2, and the second protective layer 12 may be out of contact with the first side surface 3c1.
- the first side wiring 51 covered with the first protective layer 11 collides with the second side surface 3d2 or the second protective layer 11 does not.
- the second side wiring 62 covered with the layer 12 does not.
- the first side wiring 51 contacts or collides with the second side surface 3d2
- the first side wiring 51 is protected by the first protective layer 11, so that the first side wiring 51 is prevented from being damaged. can be effectively suppressed.
- the same applies to the second side wiring 62 Therefore, damage to the first side wiring 5 and the second side wiring 6 can be further suppressed, and the operational reliability and long-term reliability of the multi-display 200 can be further improved.
- the portion of the first protective layer 11 located on the first side surface 3c1 may cover not only the first side wiring 51 but also the first side surface 3c1.
- the portion of first protective layer 11 located on first side surface 3c1 may cover a portion of first side surface 3c1, or may cover the entire first side surface 3c1.
- the first protective layer 11 may cover at least a portion of the first side surface 3 c 1 across the plurality of first side wirings 51 .
- the portion of the second protective layer 12 located on the second side surface 3d2 may cover not only the second side wiring 62 but also the second side surface 3d2.
- the portion of the second protective layer 12 located on the second side surface 3d2 may cover a portion of the second side surface 3d2, or may cover the entire second side surface 3d2.
- the second protective layer 12 may cover at least a portion of the second side surface 3d2 across the plurality of second side wirings 62.
- the first side wiring 51 and the second side wiring 62 may have convex curved outer surfaces, as shown in FIGS. 2 to 5, for example. Since the outer surface of the first side wiring 51 and the outer surface of the second side wiring 62 are rounded and do not have corners, vibration and thermal expansion may occur during use of the multi-display 200. However, it is possible to prevent the first side wiring 51 or the second side wiring 62 from being damaged by being caught by other components of the multi-display 200, and as a result, the operational reliability and long-term reliability of the multi-display 200 can be improved. can be improved. Moreover, contact between the first side wiring 51 and the second side wiring 62 can be further suppressed. The first side wiring 51 and the second side wiring 62 can be arranged closer to each other.
- the first side surface 3c1 and the second side surface 3d2 may be joined via a joining member 13, as shown in FIG. 7, for example.
- the joining member 13 may be an adhesive such as epoxy resin or acrylic resin.
- the joining member 13 may have a light shielding property. As a result, the joint portion between the first display device 1 and the second display device 2 becomes less visible to the viewer, so that the display quality of the multi-display 200 can be improved.
- the joining member 13 itself does not have to have a light shielding property. In this case, by attaching a light-shielding tape or forming an insulating resin layer with a light-shielding property on the surface of the joining member 13, the viewer can easily distinguish between the first display device 1 and the second display device 2. It is possible to make it difficult to visually recognize the joint portion.
- the joining member 13 may join the entire surface of the first side surface 3c1 and the entire surface of the second side surface 3d2.
- the joining member 13 may join a portion of the first side surface 3c1 and a portion of the second side surface 3d2. In this case, even if the first substrate 31 and the second substrate 32 are misaligned due to vibration, thermal expansion, or the like, the bonding member 13 follows the misalignment to some extent, and the first substrate 31 and the second substrate 32 are bonded together. It is possible to suppress the application of excess stress to the joint and the breakage of the joint.
- the joining member 13 may join 10% or more and 90% or less of the entire surface of the first side surface 3c1 and the entire surface of the second side surface 3d2, but is not limited to this range.
- the bonding between the first display device 1 and the second display device 2 is not limited to bonding with an adhesive, and may be bonding by mechanical means such as screwing. In this case, it is possible to adjust the relative positions of the first display device 1 and the second display device 2 after the first display device 1 and the second display device 2 are joined.
- the first display device 1 and the second display device 2 may be fitted in respective frames, and the frames may be coupled to each other by mechanical means such as screws, fitting members, and engaging members.
- the plurality of pixels 7 of the first display device 1 and the plurality of pixels 7 of the second display device 2 may be arranged in a matrix in plan view.
- the first side wiring 51 is at least partially connected to the first side surface 3c1 of the pixels (also referred to as the outermost pixels) 7p located on the outermost periphery of the matrix arrangement in plan view. may be located between pixels 7p located close to .
- At least a part of the second side wiring 62 is positioned between the pixels 7p positioned close to the second side face 3d2 among the pixels 7p positioned on the outermost periphery of the matrix arrangement in plan view.
- the multi-display 200 of FIG. 8 it is possible to reduce the area of the peripheral area (also called frame area) of the display unit 4 in the display device D. As a result, even when the pixel pitch of the display device D is narrow, the pixel pitch of the multi-display device 200 can be suppressed from fluctuating at the junction between the first display device 1 and the second display device 2. As a result, the display quality of multi-display 200 can be improved.
- the multi-display 200 of FIG. 8 even when the pixel pitch of the display device D is narrow, the reduction in the connection area between the first side wiring 51 and the wiring pad 9b is suppressed, and the second Reduction in connection area between the side wiring 62 and the wiring pad 10b can be suppressed.
- This makes it possible to reliably fix the first side wiring 51 and the wiring pad 9b while suppressing an increase in connection resistance (contact resistance) between the first side wiring 51 and the wiring pad 9b.
- the second side wiring 62 and the wiring pad 10b can be reliably fixed while suppressing an increase in connection resistance (contact resistance) between the second side wiring 62 and the wiring pad 10b. Thereby, the operational reliability and long-term reliability of the multi-display 200 can be improved.
- the first wiring 9 has an end surface 9aa on the side of the first side surface 3c1 located inside the first side surface 3c1 (that is, on the center side of the first display surface 3a1) in plan view.
- the second wiring 10 also has an end surface 10aa on the side of the second side surface 3d2 located inside the second side surface 3d2 (that is, on the center side of the second display surface 3a2) in plan view.
- the first wiring 9 has an end surface 9aa on the side of the first side surface 3c1 located inside the first side surface 3c1 (that is, on the center side of the first display surface 3a1) in plan view.
- the second wiring 10 also has an end surface 10aa on the side of the second side surface 3d2 located inside the second side surface 3d2 (that is, on the center side of the second display surface 3a2) in plan view.
- the end face 9aa of the first wiring 9 may be covered with the first side wiring 51 and/or the first protective layer 11, for example, as shown in FIGS. It may be covered with the side wiring 51 .
- the end face 9aa of the first wiring 9 may be covered with the first side wiring 51 and the first protective layer 11 covering it. In this case, the effect of suppressing quality deterioration of the first wiring 9 is further improved.
- the end face 10aa of the second wiring 10 may be covered with the second side wiring 62 and/or the second protective layer 12, for example, as shown in FIGS. It may be covered with the side wiring 62 .
- the end face 10aa of the second wiring 10 may be covered with the second side wiring 62 and the second protective layer 12 covering it. In this case, the effect of suppressing quality deterioration of the second wiring 10 is further improved.
- the first wiring 9 may have a tapered shape in which the end portion 9a on the side of the first side surface 3c1 tapers toward the first side surface 3c1.
- the end surfaces 9aa of the first wirings 9 can be reduced while suppressing a decrease in the connection area between the first side wirings 51 and the wiring pads 9b.
- the first side wiring 51 and/or the first protective layer 11 to facilitate covering.
- the first side wiring 51 and the wiring pad 9b can be reliably fixed while suppressing an increase in the connection resistance (contact resistance) between the first side wiring 51 and the wiring pad 9b.
- quality deterioration of the first wiring 9 due to corrosion or the like can be suppressed.
- the operational reliability and long-term reliability of multi-display 200 can be improved.
- the second wiring 10 may have a tapered shape in which the end portion 10a on the side of the second side surface 3d2 tapers toward the second side surface 3d2.
- the end faces 10aa of the second wirings 10 are kept from decreasing while suppressing the connection area between the second side wirings 62 and the wiring pads 10b. It can be covered with the second side wiring 62 and/or the second protective layer 12 .
- the second side wiring 62 and the wiring pad 10b can be reliably fixed while suppressing an increase in connection resistance (contact resistance) between the second side wiring 62 and the wiring pad 10b.
- quality deterioration of the second wiring 10 due to corrosion or the like can be suppressed.
- the operational reliability and long-term reliability of multi-display 200 can be improved.
- the first display device 1 and the second display device 2 each include a driving section 15 located on the opposite display surface 3b of the substrate 3.
- the drive unit 15 may be connected to an external power supply (not shown) and generate the first power supply voltage VDD and the second power supply voltage VSS based on power supplied from the external power supply.
- the drive unit 15 may be connected to an external circuit (not shown) and generate control signals CS such as light emission control signals and scanning signals based on image signals and the like input from the external circuit.
- the drive unit 15 may be, for example, a drive element such as an IC or LSI mounted on the counter-display surface 3b of the substrate 3 by a COG (Chip On Glass) method.
- the drive unit 15 is formed of low temperature polysilicon (LTPS) formed on the non-display surface 3b of the substrate 3 by a thin film formation method such as a chemical vapor deposition (CVD) method. It may be a thin film circuit including a thin film transistor (Thin Film Transistor: TFT) having a semiconductor layer composed of a thin film.
- the drive unit 15 may be a drive element provided on a flexible wiring board connected to external connection terminals located on the display surface 3 b of the substrate 3 . Further, the drive unit 15 may be an external drive element electrically connected to the wiring of the flexible wiring board.
- the first drive unit 15 a of the first display device 1 drives at least one of the plurality of pixels 7 of the first display device 1 through the back wiring 14 (shown in FIGS. 3 and 5 ) and the first side wiring 51 . may be electrically connected to each other.
- the first drive unit 15 a supplies the first power supply voltage VDD, the second power supply voltage VSS, or the control signal CS to at least one of the plurality of pixels 7 of the first display device 1 via the first side wiring 51 . may be supplied to
- the second drive section 15b of the second display device 2 is electrically connected to at least one of the plurality of pixels 7 of the second display device 2 via the back wiring 14 and the second side wiring 62. good too.
- the second drive section 15 b may supply the first power supply voltage VDD, the second power supply voltage VSS, or the control signal CS to the display section 4 of the second display device 2 via the second side wiring 62 .
- the drive unit 15 of the display device D and at least one pixel 7 of the display device D are electrically connected to each other via a through conductor such as a through hole that penetrates the substrate 3 from the display surface 3a to the opposite display surface 3b. may have been When electrically connecting the driving unit 15 and at least one pixel 7 to each other via the first side wiring 51 or the second side wiring 62, the area of the frame region of the display device D can be reduced. It becomes possible.
- the first side wiring 51 and the second side wiring 62 may be electrically connectable.
- the first display device 1 and the second display device 2 can exchange signals via the first side wiring 51 and the second side wiring 62 .
- the first side wiring 51 and the second side wiring 62 are connected to side connection wiring and side connection wiring located on the first side surface 3c1 of the first substrate 31 and/or the second side surface 3d2 of the second substrate 32. They may be electrically connected via side connection pads or the like.
- the first side wiring 51 and the second side wiring 62 are connection wirings provided on the first counter-display surface 3b1 of the first substrate 31 and/or the second counter-display surface 3b2 of the second substrate 32. They may be electrically connected via connection wiring, side connection pads, and the like.
- the first side wiring 51 and the second side wiring 62 are the display surface connection wiring, the side connection wiring and They may be electrically connected via side connection pads or the like.
- the first side wiring 51 and the second side wiring 62 may be electrically connected by a connection wire, a connection cable, a connector, or the like.
- the multi-display 200 includes two display devices D has been described. good.
- two display devices D adjacent to each other in the same manner as the first display device 1 and the second display device 2 of the multi-display 200, three or more display devices D are included, and the display quality, It is possible to provide the multi-display 200 with improved operational reliability and long-term reliability.
- the display device D includes side wirings 19 positioned from the side surface 3e to the display surface 3a, and side wirings 20 positioned from the side surface 3f to the display surface 3a.
- the side surface 3e is a side surface different from the side surface 3c and the opposite side surface 3d of the rectangular substrate 3
- the side surface 4f is a side surface opposite to the side surface 3e.
- the multi-display 200 is provided with three or more display devices D arranged vertically and horizontally, one display device D and another display device D adjacent thereto are the side 3e of one display device and the other display device D may be arranged so as to be close to and face each other.
- the side wiring 19 of one display device D and the side wiring 20 of another display device D may be arranged so as not to face each other.
- FIG. 13 is a plan view showing a display device according to an embodiment of the present disclosure
- FIG. 14 is a plan view showing a mother substrate for manufacturing the display device of FIG. 13.
- FIG. 13 and 14 omit the insulating substrate located on the first surface of the substrate.
- the display device D1 of the present embodiment is a display device that constitutes the multi-display 200, and has the same configuration as the display device D described above. Detailed description is omitted.
- the display device D1 includes a substrate 3, a display section 4, a first side wiring 5, and a second side wiring (hereinafter sometimes referred to as "opposite side wiring") 6.
- the opposite side wiring 6 can also be referred to as a facing side wiring on the side of the substrate 3 facing the first side wiring 5 .
- the first side wiring 5 is located from the side surface 3c of the substrate 3 to the display surface 3a. Furthermore, the first side wiring 5 may be positioned from the side surface 3c to the counter-display surface 3b.
- the opposite side wiring 6 is located from the opposite side 3d to the display surface 3a. Further, the opposite side wiring 6 may be positioned from the opposite side 3d to the counter-display surface 3b.
- the plurality of display devices D1 includes a first display device D1a (not shown) and a second display device D1b (not shown), with the side 3c of the first display D1a and the opposite side of the second display D1b. 3d are closely opposed to each other, and the first side wiring 5 of the first display device D1a and the opposite side wiring 6 of the second display device D1b are arranged so as not to face each other, thereby configuring the multi-display 200. can.
- the display device D1 may include a first wiring (hereinafter also simply referred to as wiring) 9 located on the display surface 3a.
- the first wiring 9 may have the same configuration as the first wiring 9 shown in FIGS. This makes it possible to provide the multi-display 200 with improved display quality, operational reliability, and long-term reliability even when the pixel pitch of the display device D1 is narrow.
- the display device D1 may include a second wiring 10 located on the display surface 3a.
- the second wiring 10 may have the same configuration as the second wiring 10 shown in FIGS. This makes it possible to provide the multi-display 200 with improved display quality, operational reliability, and long-term reliability even when the pixel pitch of the display device D1 is narrow.
- the first side wiring 5 and the opposite side wiring 6 may be electrically connectable.
- the first display device D1a and the second display device D1b can exchange signals via the first side wiring 5 and the opposite side wiring 6.
- FIG. The configuration for electrically connecting the first side wiring 5 and the opposite side wiring 6 may be the same as the various configurations described above.
- the method of manufacturing the display device D1 may include, for example, a step of cutting the mother substrate 16 having a plurality of display device precursors DP to form the display device D1 into individual pieces of display device precursors DP.
- the mother substrate 16 includes one main surface 16a corresponding to the display surface 3a of the substrate 3 and the other main surface 16b corresponding to the non-display surface 3b of the substrate 3, as shown in FIG. 14, for example.
- a precursor of the display section 4 and the first wiring 9 hereinafter also referred to as a display section precursor
- the mother substrate 16 has a cutting margin 16c surrounding each display device precursor DP, and a cutting line L is set at the boundary between each display device precursor DP and the cutting margin 16c.
- the wiring precursor 9P that becomes the first wiring 9 may extend from inside the display device precursor DP toward the outside of the display device precursor DP (cutting allowance 16c).
- the wiring precursor 9P may be connected to the test pad 18 positioned outside the display device precursor DP (cutting allowance 16c).
- an inspection element such as an inspection probe terminal of an inspection device (not shown) is brought into contact with the inspection pad 18 , and an inspection signal is supplied from the inspection device to the inspection pad 18 .
- a test of the electrical properties of the body DP may be performed.
- the first wiring 9 is wiring for electrically connecting the driving section 15 and at least one pixel 7, that is, wiring used for driving the display device D1.
- the wiring precursor 9P extends from the inside of the display device precursor DP to the outside of the display device precursor DP, the first wiring The end face 9aa of 9 is exposed.
- the quality deterioration of the first wiring 9 due to corrosion or the like can be suppressed.
- the operational reliability and long-term reliability of display device D1 can be improved, and the operational reliability and long-term reliability of multi-display 200 can be improved.
- the mother substrate 16 can be cut, for example, by irradiating laser light along the cutting line L from the other main surface 16b side of the mother substrate 16.
- the cutting portion located at the outer peripheral portion (peripheral edge portion) of the mother substrate 16 C may be removed.
- the material forming the cut portion C located in the outer peripheral portion (peripheral portion) of the mother substrate 16 is vaporized or scattered by the irradiation of the laser light, and the anode electrode 84, the cathode electrode 85, etc. formed on the display portion precursor are evaporated or scattered.
- the manufacturing yield of the display device D1 can be improved, and the operational reliability of the display device D1 can be improved.
- a plurality of display device precursors DP By cutting the mother substrate 16 along the cutting lines L, a plurality of display device precursors DP can be manufactured.
- a plurality of display devices D1 are manufactured by mounting a plurality of light emitting elements 71 on each display device precursor DP, and forming a rear surface wiring 14, a driving section 15, a first side wiring 5, an opposite side wiring 6, and the like. be able to.
- the multi-display 200 can be manufactured by arranging the side surface 3c of one display device D1 and the opposite side surface 3d of the other display device D1 so as to be close to each other and face each other.
- a first substrate having a first display surface and a first side surface continuous therewith, a first display section positioned on the first display surface, and a display portion positioned from the first side surface to the first display surface a first display device having a first side wiring; a second substrate having a second display surface and a second side surface continuous therewith; a second display portion positioned on the second display surface; and a second side surface positioned from the second side surface to the second display surface a second display device having wiring,
- the first side surface and the second side surface are arranged close to each other and face each other, The multi-display, wherein the first side wiring and the second side wiring are not opposed to each other.
- the first protective layer is in non-contact with the second side;
- the first protective layer covers the first side surface;
- the first side wiring has a curved surface with a convex outer surface;
- the first display section and the second display section have a plurality of pixels each including a light emitting element and a pixel circuit for driving the light emitting element on the first display surface and the second display surface.
- arranged in a matrix At least a portion of the first side wiring is positioned between pixels positioned close to the first side surface among the plurality of outermost pixels positioned on the outermost periphery of the matrix arrangement in plan view.
- cage At least a portion of the second side wiring is positioned between pixels positioned close to the second side, among the plurality of outermost pixels positioned on the outermost periphery of the matrix arrangement, in a plan view.
- the multi-display according to any one of (1) to (9) above.
- the first display device includes a first wiring connected to at least one of the plurality of pixels at an edge of the first side surface on the first display surface, and the first wiring is connected to at least one of the plurality of pixels.
- the wiring has a first end surface on the first side surface located inside the first side surface, and the first end surface is covered with the first side surface wiring, or the first side surface wiring and the first side surface wiring are covered with the first side surface wiring.
- the second display device includes a second wiring connected to at least one of the plurality of pixels at an edge of the second side surface on the second display surface, the second wiring comprising: A second end surface on the second side surface is positioned inside the second side surface, and the second end surface is covered with the second side wiring, or the second side wiring and the second side wiring.
- the first display device and the second display device are composed of a first driving unit positioned on a first anti-display surface opposite to the first display surface and a second display device opposite to the second display surface.
- the multi-display according to any one of 1.
- a substrate having a display surface, a side surface connected to the display surface, and a side surface opposite to the side surface; a display unit located on the display surface; side wirings positioned from the side surface to the display surface; an opposite side wiring located from the opposite side to the display surface, The display device, wherein the side wiring and the opposite side wiring are not opposed to each other.
- the substrate includes wiring located at the edge of the side surface on the display surface;
- the wiring has an end surface on the side surface side located inside the side surface,
- a plurality of display devices includes a first display device and a second display device; the side surface of the first display device and the opposite side surface of the second display device are arranged in close proximity to each other, The multi-display, wherein the side wiring of the first display device and the opposite side wiring of the second display device are not opposed to each other.
- each of the first display section and the second display section includes at least one light emitting element.
- the multi-display of the present disclosure it is possible to prevent the side wirings provided on the side surfaces of the joint portions of the display device and the display device adjacent thereto from coming into contact and causing an electrical short circuit. It is possible to prevent the side wirings provided on the joint side surfaces of the display device and the adjacent display device from being damaged, broken, or peeled off due to contact, collision, or the like.
- the gap (joint) between the display device and its adjacent display device can be reduced. As a result, the operational reliability and long-term reliability of the multi-display are improved, and the display quality is improved.
- the display device of the present disclosure can produce the multi-display with improved operational reliability, long-term reliability, and display quality.
- the display device and multi-display of the present disclosure can be applied to various electronic devices.
- the electronic devices include lighting devices, automobile route guidance systems (car navigation systems), ship route guidance systems, aircraft route guidance systems, instrument indicators for vehicles such as automobiles, instrument panels, smartphone terminals, mobile phones, and tablets.
- Terminals personal digital assistants (PDAs), video cameras, digital still cameras, electronic notebooks, electronic books, electronic dictionaries, personal computers, copiers, terminal devices for game machines, televisions, product display tags, price display tags, industrial use programmable displays, car audio, digital audio players, facsimiles, printers, automated teller machines (ATMs), vending machines, medical displays, digital display watches, smart watches, stations and airports, etc.
- first display device 2 second display device 3 substrate 31 first substrate 32 second substrate 3a display surface of substrate 3a1 first display surface of first substrate 3a2 second display surface of second substrate 3b opposite side of substrate Display surface 3b1 First opposite display surface of the first substrate 3b2 Second opposite display surface of the second substrate 3c Side surface of the substrate 3c1 First side surface of the first substrate (joint portion side surface) 3c2 side of the second substrate (non-bonded side) 3d Opposite side of substrate 3d1 First opposite side of first substrate 3d2 Second side of second substrate (second opposite side and joint side) 3e side surface 3f side surface 4 display portion of display device 4a first display portion of first display device 4b second display portion of second display device 5, 51 first side wiring 6, 62 second side wiring 7 pixel 7p pixel (maximum outside pixel) 71, 71r, 71g, 71b light emitting element 72 pixel circuit 8 insulating base 81, 82, 83 insulating layer 84 anode electrode 85 cath
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Abstract
Description
第2表示面およびそれに連なる第2側面を有する第2基板と、前記第2表示面上に位置する第2表示部と、前記第2側面上から前記第2表示面上にかけて位置する第2側面配線と、を有する第2表示装置と、を備え、
前記第1側面と、前記第2側面とが、互いに近接して対向配置されており、
前記第1側面配線と、前記第2側面配線とは、対向しない位置にある。
前記表示面上に位置する表示部と、
前記側面上から前記表示面上にかけて位置する側面配線と、
前記第反対側面上から前記表示面上にかけて位置する反対側面配線と、を備え、
前記側面配線と前記反対側面配線とは、対向しない位置にある。
第2表示面およびそれに連なる第2側面を有する第2基板と、前記第2表示面上に位置する第2表示部と、前記第2側面上から前記第2表示面上にかけて位置する第2側面配線と、を有する第2表示装置と、を備え、
前記第1側面と、前記第2側面とが、互いに近接して対向配置されており、
前記第1側面配線と、前記第2側面配線とは、対向しない位置にある、マルチディスプレイ。
前記第2側面配線は、前記第1側面と非接触である、上記(1)に記載のマルチディスプレイ。
前記第2保護層は、前記第1側面と非接触である、上記(3)に記載のマルチディスプレイ。
前記第2保護層は、前記第2側面を覆っている、上記(3)または(4)に記載のマルチディスプレイ。
前記第2側面配線は、外表面が凸型の湾曲面である、上記(1)~(5)のいずれか1項に記載のマルチディスプレイ。
前記第1表示装置および前記第2表示装置は、前記ベース基板上に固定されている、上記(1)~(8)のいずれか1項に記載のマルチディスプレイ。
前記第1側面配線は、平面視において、少なくとも一部分が、マトリックス状の配列の最外周に位置する複数の最外画素のうちの、前記第1側面に近接して位置する画素間に位置しており、
前記第2側面配線は、平面視において、少なくとも一部分が、マトリックス状の配列の最外周に位置する複数の最外画素のうちの、前記第2側面に近接して位置する画素間に位置している、上記(1)~(9)のいずれか1項に記載のマルチディスプレイ。
前記第2表示装置は、前記第2表示面上における前記第2側面側の縁部に、前記複数の画素のうちの少なくとも1つに接続される第2配線を備え、前記第2配線は、前記第2側面側の第2端面が前記第2側面よりも内側に位置し、前記第2端面は、前記第2側面配線によって覆われている、または前記第2側面配線と前記第2側面配線を覆う第2保護層とによって覆われている、上記(1)または(2)に記載のマルチディスプレイ。
前記第1表示装置は、前記複数の画素のうちの少なくとも1つと前記第1駆動部とが、前記第1側面配線を介して、電気的に接続されており、
前記第2表示装置は、前記複数の画素のうちの少なくとも1つと前記第2駆動部とが、前記第2側面配線を介して、電気的に接続されている、上記(1)~(11)のいずれか1項に記載のマルチディスプレイ。
前記表示面上に位置する表示部と、
前記側面上から前記表示面上にかけて位置する側面配線と、
前記反対側面上から前記表示面上にかけて位置する反対側面配線と、を備え、
前記側面配線と前記反対側面配線とは、対向しない位置にある、表示装置。
前記配線は、前記側面側の端面が前記側面よりも内側に位置し、
前記端面は、前記側面配線によって覆われている、または前記側面配線と前記側面配線を覆う保護層とによって覆われている、上記(14)に記載の表示装置。
複数の表示装置は、第1表示装置および第2表示装置を含み、
前記第1表示装置の前記側面と前記第2表示装置の前記反対側面とが、互いに近接して対向配置されており、
前記第1表示装置の前記側面配線と、前記第2表示装置の前記反対側面配線とが、対向しない位置にある、マルチディスプレイ。
1 第1表示装置
2 第2表示装置
3 基板
31 第1基板
32 第2基板
3a 基板の表示面
3a1 第1基板の第1表示面
3a2 第2基板の第2表示面
3b 基板の反表示面
3b1 第1基板の第1反表示面
3b2 第2基板の第2反表示面
3c 基板の側面
3c1 第1基板の第1側面(結合部側面)
3c2 第2基板の側面(非結合部側面)
3d 基板の反対側面
3d1 第1基板の第1反対側面
3d2 第2基板の第2側面(第2反対側面であって結合部側面)
3e 側面
3f 側面
4 表示装置の表示部
4a 第1表示装置の第1表示部
4b 第2表示装置の第2表示部
5,51 第1側面配線
6,62 第2側面配線
7 画素
7p 画素(最外画素)
71,71r,71g,71b 発光素子
72 画素回路
8 絶縁基体
81,82,83 絶縁層
84 アノード電極
85 カソード電極
9,91,92 第1配線(配線)
9P 配線前駆体
9a 端部
9aa 端面
9b 配線パッド
10 第2配線
10a 端部
10aa 端面
10b 配線パッド
11 第1保護層
12 第2保護層
13 接合部材
14 裏面配線
15a 第1表示装置の第1駆動部
15b 第2表示装置の第2駆動部
16 母基板
16a 一方主面
16b 他方主面
16c 切断代
17 ベース基板
17a 一方主面
18 検査パッド
19 側面配線
20 側面配線
21 保護層
D,D1 表示装置
DP 表示装置前駆体
Claims (19)
- 第1表示面およびそれに連なる第1側面を有する第1基板と、前記第1表示面上に位置する第1表示部と、前記第1側面上から前記第1表示面上にかけて位置する第1側面配線と、を有する第1表示装置と、
第2表示面およびそれに連なる第2側面を有する第2基板と、前記第2表示面上に位置する第2表示部と、前記第2側面上から前記第2表示面上にかけて位置する第2側面配線と、を有する第2表示装置と、を備え、
前記第1側面と、前記第2側面とが、互いに近接して対向配置されており、
前記第1側面配線と、前記第2側面配線とは、対向しない位置にある、マルチディスプレイ。 - 前記第1側面配線は、前記第2側面と非接触であり、
前記第2側面配線は、前記第1側面と非接触である、請求項1に記載のマルチディスプレイ。 - 前記第1側面配線を覆う第1保護層と、前記第2側面配線を覆う第2保護層と、をさらに備える、請求項1または2に記載のマルチディスプレイ。
- 前記第1保護層は、前記第2側面と非接触であり、
前記第2保護層は、前記第1側面と非接触である、請求項3に記載のマルチディスプレイ。 - 前記第1保護層は、前記第1側面を覆っており、
前記第2保護層は、前記第2側面を覆っている、請求項3または4に記載のマルチディスプレイ。 - 前記第1側面配線は、外表面が凸型の湾曲面であり、
前記第2側面配線は、外表面が凸型の湾曲面である、請求項1~5のいずれか1項に記載のマルチディスプレイ。 - 前記第1側面と前記第2側面とが、接合部材を介して接合されている、請求項1~6のいずれか1項に記載のマルチディスプレイ。
- 前記接合部材は、遮光性を有している、請求項7に記載のマルチディスプレイ。
- ベース基板を備え、
前記第1表示装置および前記第2表示装置は、前記ベース基板上に固定されている、請求項1~8のいずれか1項に記載のマルチディスプレイ。 - 前記第1表示部および前記第2表示部は、前記第1表示面上および前記第2表示面上に、それぞれ発光素子と前記発光素子を駆動する画素回路とを含む複数の画素がマトリックス状に配列されてなり、
前記第1側面配線は、平面視において、少なくとも一部分が、マトリックス状の配列の最外周に位置する複数の最外画素のうちの、前記第1側面に近接して位置する画素間に位置しており、
前記第2側面配線は、平面視において、少なくとも一部分が、マトリックス状の配列の最外周に位置する複数の最外画素のうちの、前記第2側面に近接して位置する画素間に位置している、請求項1~9のいずれか1項に記載のマルチディスプレイ。 - 前記第1表示装置は、前記第1表示面上における前記第1側面側の縁部に、前記複数の画素のうちの少なくとも1つに接続される第1配線を備え、前記第1配線は、前記第1側面側の第1端面が前記第1側面よりも内側に位置し、前記第1端面は、前記第1側面配線によって覆われている、または前記第1側面配線と前記第1側面配線を覆う第1保護層とによって覆われており、
前記第2表示装置は、前記第2表示面上における前記第2側面側の縁部に、前記複数の画素のうちの少なくとも1つに接続される第2配線を備え、前記第2配線は、前記第2側面側の第2端面が前記第2側面よりも内側に位置し、前記第2端面は、前記第2側面配線によって覆われている、または前記第2側面配線と前記第2側面配線を覆う第2保護層とによって覆われている、請求項1または2に記載のマルチディスプレイ。 - 前記第1表示装置および前記第2表示装置は、前記第1表示面と反対側の第1反表示面上に位置する第1駆動部および前記第2表示面と反対側の第2反表示面上に位置する第2駆動部を備え、
前記第1表示装置は、前記複数の画素のうちの少なくとも1つと前記第1駆動部とが、前記第1側面配線を介して、電気的に接続されており、
前記第2表示装置は、前記複数の画素のうちの少なくとも1つと前記第2駆動部とが、前記第2側面配線を介して、電気的に接続されている、請求項1~11のいずれか1項に記載のマルチディスプレイ。 - 前記第1側面配線および前記第2側面配線は、電気的に接続可能とされている、請求項1~12のいずれか1項に記載のマルチディスプレイ。
- 表示面、前記表示面に連なる側面、および前記側面と反対側の反対側面を有する基板と、
前記表示面上に位置する表示部と、
前記側面上から前記表示面上にかけて位置する側面配線と、
前記反対側面上から前記表示面上にかけて位置する反対側面配線と、を備え、
前記側面配線と前記反対側面配線とは、対向しない位置にある、表示装置。 - 前記基板は、前記表示面上における前記側面側の縁部に位置する配線を含み、
前記配線は、前記側面側の端面が前記側面よりも内側に位置し、
前記端面は、前記側面配線によって覆われている、または前記側面配線と前記側面配線を覆う保護層とによって覆われている、請求項14に記載の表示装置。 - 請求項14または15に記載の表示装置を複数備え、
複数の表示装置は、第1表示装置および第2表示装置を含み、
前記第1表示装置の前記側面と前記第2表示装置の前記反対側面とが、互いに近接して対向配置されており、
前記第1表示装置の前記側面配線と、前記第2表示装置の前記反対側面配線とが、対向しない位置にある、マルチディスプレイ。 - 前記側面配線および前記反対側面配線は、電気的に接続可能とされている、請求項16に記載のマルチディスプレイ。
- 前記第1表示部および前記第2表示部はそれぞれ、少なくとも1つの発光素子を含む、請求項1~13のいずれか1項に記載のマルチディスプレイ。
- 前記表示部は、少なくとも1つの発光素子を含む、請求項16または17に記載のマルチディスプレイ。
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JP2020154278A (ja) * | 2019-03-20 | 2020-09-24 | テトス カンパニー,リミテッド | Ledディスプレイモジュール |
JP2020532762A (ja) * | 2017-09-04 | 2020-11-12 | ソウル セミコンダクター カンパニー リミテッドSeoul Semiconductor Co., Ltd. | 表示装置及びその製造方法 |
WO2021149565A1 (ja) * | 2020-01-24 | 2021-07-29 | 京セラ株式会社 | 表示装置および表示装置の製造方法 |
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2022
- 2022-09-08 WO PCT/JP2022/033800 patent/WO2023038096A1/ja active Application Filing
- 2022-09-08 CN CN202280060134.5A patent/CN117916789A/zh active Pending
- 2022-09-08 JP JP2023546993A patent/JPWO2023038096A1/ja active Pending
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JP2009008731A (ja) * | 2007-06-26 | 2009-01-15 | Mitsubishi Electric Corp | 画像表示素子及びその製造方法並びに画像表示装置 |
JP2010231931A (ja) * | 2009-03-26 | 2010-10-14 | Casio Computer Co Ltd | 発光装置及びその製造方法 |
US20180188579A1 (en) * | 2016-12-30 | 2018-07-05 | Lg Display Co., Ltd. | Display device, multi-screen display device using the same and method for manufacturing the same |
JP2019028284A (ja) * | 2017-07-31 | 2019-02-21 | 京セラ株式会社 | 表示装置 |
JP2019045718A (ja) * | 2017-09-04 | 2019-03-22 | 大日本印刷株式会社 | 表示パネルおよびタイリング表示装置 |
JP2020532762A (ja) * | 2017-09-04 | 2020-11-12 | ソウル セミコンダクター カンパニー リミテッドSeoul Semiconductor Co., Ltd. | 表示装置及びその製造方法 |
US20200259056A1 (en) * | 2019-02-13 | 2020-08-13 | Samsung Electronics Co., Ltd. | Display module having glass substrate on which side wirings are formed and manufacturing method of the same |
JP2020154278A (ja) * | 2019-03-20 | 2020-09-24 | テトス カンパニー,リミテッド | Ledディスプレイモジュール |
WO2021149565A1 (ja) * | 2020-01-24 | 2021-07-29 | 京セラ株式会社 | 表示装置および表示装置の製造方法 |
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