WO2024014379A1 - 発光装置、電子機器および封止デバイス - Google Patents
発光装置、電子機器および封止デバイス Download PDFInfo
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- WO2024014379A1 WO2024014379A1 PCT/JP2023/024950 JP2023024950W WO2024014379A1 WO 2024014379 A1 WO2024014379 A1 WO 2024014379A1 JP 2023024950 W JP2023024950 W JP 2023024950W WO 2024014379 A1 WO2024014379 A1 WO 2024014379A1
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
- H10K50/84—Passivation; Containers; Encapsulations
- H10K50/844—Encapsulations
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/80—Constructional details
- H10K59/87—Passivation; Containers; Encapsulations
- H10K59/871—Self-supporting sealing arrangements
- H10K59/8722—Peripheral sealing arrangements, e.g. adhesives, sealants
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/80—Constructional details
- H10K59/87—Passivation; Containers; Encapsulations
- H10K59/873—Encapsulations
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
- H10K50/84—Passivation; Containers; Encapsulations
- H10K50/842—Containers
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
- H10K50/84—Passivation; Containers; Encapsulations
- H10K50/842—Containers
- H10K50/8426—Peripheral sealing arrangements, e.g. adhesives, sealants
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/80—Constructional details
- H10K59/87—Passivation; Containers; Encapsulations
- H10K59/873—Encapsulations
- H10K59/8731—Encapsulations multilayered coatings having a repetitive structure, e.g. having multiple organic-inorganic bilayers
Definitions
- the present disclosure relates to a light emitting device, an electronic device including the same, and a sealed device.
- Patent Document 1 discloses a metal layer, and a metal layer provided on a first surface of the metal layer, the first surface having a metal layer such that an end of a part of the region forms a gap with an end of the first surface.
- An organic electronic device sealing film is disclosed that includes a sealing layer located inside the end portion, and the sealing layer includes a pressure-sensitive adhesive layer and an adhesive layer.
- the conventional sealing structure may not be able to sufficiently suppress moisture intrusion, and there is room for improvement.
- An object of the present disclosure is to provide a light emitting device that can suppress the intrusion of moisture, an electronic device equipped with the same, and a sealed device.
- a first light emitting device includes: a plurality of light emitting elements provided in a display area; a Si-containing layer covering a plurality of light emitting elements; a metal oxide layer provided on the Si-containing layer; A seal portion provided outside the display area and containing an organic resin; The Si-containing layer has an exposed portion that is not covered with the metal oxide layer outside the display area, and the seal portion is in contact with the exposed portion.
- the second light emitting device includes: a plurality of light emitting elements provided in a display area; a first Si-containing layer covering the plurality of light emitting elements; a metal oxide layer provided on the first Si-containing layer; a second Si-containing layer provided on the metal oxide layer; A seal portion provided outside the display area and containing an organic resin; The seal portion is in contact with the second Si-containing layer outside the display area.
- a first encapsulation device includes: a plurality of elements provided in the element formation region; a Si-containing layer covering a plurality of elements; a metal oxide layer provided on the Si-containing layer; A sealing portion provided outside the element formation area and containing an organic resin;
- the Si-containing layer has an exposed portion that is not covered with the metal oxide layer and is exposed outside the element formation region, and the seal portion is in contact with the exposed portion.
- a second encapsulation device includes: a plurality of elements provided in the element formation region; a first Si-containing layer covering the plurality of elements; a metal oxide layer provided on the first Si-containing layer; a second Si-containing layer provided on the metal oxide layer; A sealing portion provided outside the element formation area and containing an organic resin; The seal portion is in contact with the second Si-containing layer outside the element formation region.
- a first electronic device includes a first light emitting device or a second light emitting device.
- a second electronic device includes a first sealing device or a second sealing device.
- FIG. 1 is a cross-sectional view for explaining an overview of the present disclosure.
- FIG. 2 is a plan view showing an example of the appearance of the display device according to the first embodiment.
- FIG. 3 is a sectional view taken along line III-III in FIG. 2.
- FIG. 4A is a plan view showing an example of a Si-containing layer and a metal oxide layer.
- FIG. 4B is a cross-sectional view taken along line IVB-IVB in FIG. 4A.
- FIGS. 5A and 5B are diagrams each illustrating a mechanism for improving adhesion.
- FIGS. 6A and 6B are diagrams for explaining the adhesion improvement mechanism, respectively.
- FIG. 7 is a cross-sectional view showing an example of the configuration of a display device according to Modification 1.
- FIG. 1 is a cross-sectional view showing an example of the configuration of a display device according to Modification 1.
- FIG. 1 is a cross-sectional view showing an example of the configuration of a display device
- FIG. 8A is a plan view showing an example of a Si-containing layer and a metal oxide layer included in a display device according to Modification 2.
- FIG. 8B is a cross-sectional view taken along line VIIIB-VIIIB in FIG. 8A.
- FIG. 9A is a plan view showing an example of a Si-containing layer and a metal oxide layer included in a display device according to Modification Example 3.
- FIG. 9B is a cross-sectional view taken along line IXB-IXB in FIG. 9A.
- FIG. 10A is a plan view showing an example of a Si-containing layer and a metal oxide layer included in a display device according to Modification Example 4.
- FIG. 10B is a cross-sectional view taken along line XB-XB in FIG. 10A.
- FIG. 11A is a plan view showing an example of a Si-containing layer and a metal oxide layer included in a display device according to Modification Example 5.
- FIG. 11B is a cross-sectional view taken along line XIB-XIB in FIG. 11A.
- FIG. 12 is a cross-sectional view showing an example of the configuration of a display device according to the second embodiment.
- FIG. 13A is a plan view showing an example of a Si-containing layer and a metal oxide layer included in a display device according to Modification Example 1.
- FIG. 13B is a cross-sectional view taken along line XIIIB-XIIIB in FIG. 13A.
- FIG. 14A is a plan view showing an example of a Si-containing layer and a metal oxide layer included in a display device according to Modification Example 2.
- FIG. 14B is a cross-sectional view taken along line XIVB-XIVB in FIG. 14A.
- FIG. 15A is a front view showing an example of the appearance of a digital still camera.
- FIG. 15B is a rear view showing an example of the external appearance of a digital still camera.
- FIG. 16 is a perspective view showing an example of the appearance of a head mounted display.
- FIG. 17 is a perspective view showing an example of the appearance of the television device.
- FIG. 18 is a perspective view showing an example of the appearance of a see-through head-mounted display.
- FIG. 19 is a perspective view showing an example of the appearance of a smartphone.
- FIG. 20A is a diagram showing an example of the inside of the vehicle from the rear to the front of the vehicle.
- FIG. 20B is a diagram illustrating an example of the interior of the vehicle from diagonally rearward to diagonally forward.
- the inventors of the present invention conducted extensive studies to improve the adhesion between the seal portion 18 and the base layer, taking into consideration the mechanism of the decrease in reliability described above. As a result, all or a portion of the metal oxide layer 14 located below the seal portion 18 is removed, and the Si-containing layer 13 and the metal oxide layer 14 are brought into direct contact with each other. It was discovered that the adhesion of the base layer could be improved.
- FIG. 2 is a plan view showing an example of the appearance of the display device 10 according to the first embodiment.
- FIG. 3 is a sectional view taken along line III-III in FIG. 2.
- the display device 10 has a display area R1 and a seal area R2.
- the display area R1 is an element formation area in which a plurality of light emitting elements 20 are formed.
- the display area R1 has, for example, a rectangular shape in plan view. Examples of the quadrangular shape include a rectangular shape and a parallelogram shape, but other quadrangular shapes may be used. In this specification, the rectangular shape includes a square shape. Note that the shape of the display area R1 is not limited to a rectangular shape, and can be selected to be any shape.
- the seal area R2 is an area where the seal portion 18 is provided.
- the seal area R2 is located outside the display area R1.
- the seal area R2 has a closed loop shape surrounding the display area R1 in plan view.
- FIG. 2 shows an example in which the seal area R2 is adjacent to the display area R1, a space may be provided between the seal area R2 and the display area R1, and the two areas may be separated from each other.
- the display device 10 is an example of a light emitting device.
- the display device 10 is a top emission type OLED display device.
- Display device 10 may be a microdisplay.
- the display device 10 may be included in a VR (Virtual Reality) device, an MR (Mixed Reality) device, an AR (Augmented Reality) device, an electronic view finder (EVF), a small projector, or the like.
- the display device 10 includes a circuit board 11, a plurality of light emitting elements 20, an insulating layer 12, a Si-containing layer 13, a metal oxide layer 14, a color filter 15, a filled resin layer 16, and a contact portion 17. , a seal portion 18 and a counter substrate 19.
- the display device 10 may further include a pad section (not shown).
- a flexible printed circuit (FPC) may be connected to the pad portion. Note that when the display device 10 includes a pad section, the seal region R2 may be provided inside the pad section.
- the display device 10 may include a plurality of dummy electrodes 121 and an insulating layer 122.
- Dummy electrode 121 is provided on the first surface of circuit board 11 in seal region R2.
- the insulating layer 122 covers the plurality of dummy electrodes 121.
- a planar view means a planar view when the object is viewed from a direction perpendicular to the first surface.
- the circuit board 11 is a so-called backplane and drives a plurality of light emitting elements 20.
- the circuit board 11 includes a substrate.
- a plurality of wiring lines, a drive circuit for driving the plurality of light emitting elements 20, a power supply circuit (all not shown) for supplying power to the plurality of light emitting elements 20, and the like are provided on the first surface of the substrate.
- An insulating layer covers the first side of the substrate and planarizes the first side of the substrate.
- the substrate may be made of, for example, a semiconductor with which transistors and the like can be easily formed, or may be made of glass or resin that has low moisture and oxygen permeability.
- the substrate may be a semiconductor substrate, a glass substrate, a resin substrate, or the like.
- the semiconductor substrate includes, for example, amorphous silicon, polycrystalline silicon, single crystal silicon, or the like.
- the glass substrate includes, for example, high strain point glass, soda glass, borosilicate glass, forsterite, lead glass, or quartz glass.
- the resin substrate includes, for example, at least one selected from the group consisting of polymethyl methacrylate, polyvinyl alcohol, polyvinylphenol, polyether sulfone, polyimide, polycarbonate, polyethylene terephthalate, polyethylene naphthalate, and the like.
- the light emitting element 20 is a white OLED element, and can emit white light under control of a drive circuit or the like.
- the white OLED element may be a white Micro-OLED (MOLED) element.
- the plurality of light emitting elements 20 are two-dimensionally arranged on the first surface of the circuit board 11 in a prescribed arrangement pattern.
- the light emitting device 20 includes a first electrode 21, an OLED layer 22, and a second electrode 23 on the first surface of the circuit board 11 in this order.
- the first electrode 21 is an anode. When a voltage is applied between the first electrode 21 and the second electrode 23, holes are injected from the first electrode 21 into the OLED layer 22.
- the first electrode 21 has a planar shape perpendicular to the thickness direction of the light emitting element 20 .
- the first electrode 21 is divided between adjacent light emitting elements 20 and provided separately for a plurality of light emitting elements 20 .
- the plurality of first electrodes 21 are two-dimensionally arranged on the first surface of the circuit board 11 in the same arrangement pattern as the plurality of light emitting elements 20.
- the first electrode 21 may be composed of a metal layer that also serves as a reflective layer, or may be composed of a metal layer and a transparent conductive oxide layer, for example.
- the transparent conductive oxide layer is similar to the OLED layer 22. Preferably, it is provided on the side.
- the metal layer also has a function as a reflective layer that reflects the light emitted by the OLED layer 22.
- the metal layer include chromium (Cr), gold (Au), platinum (Pt), nickel (Ni), copper (Cu), molybdenum (Mo), titanium (Ti), tantalum (Ta), and aluminum (Al). , magnesium (Mg), iron (Fe), tungsten (W), and silver (Ag).
- the metal layer may include at least one metal as a constituent material of an alloy. Specific examples of alloys include aluminum alloys and silver alloys. Specific examples of aluminum alloys include AlNd and AlCu.
- a base layer may be provided adjacent to the second surface side of the metal layer.
- the base layer can improve the crystal orientation of the metal layer during film formation of the metal layer.
- the base layer contains, for example, at least one metal selected from the group consisting of titanium (Ti) and tantalum (Ta).
- the base layer may include at least one of the above metals as a constituent material of an alloy.
- the transparent conductive oxide layer contains a transparent conductive oxide.
- Transparent conductive oxides include, for example, transparent conductive oxides containing indium (hereinafter referred to as “indium-based transparent conductive oxides”) and transparent conductive oxides containing tin (hereinafter referred to as “tin-based transparent conductive oxides”). ) and transparent conductive oxides containing zinc (hereinafter referred to as “zinc-based transparent conductive oxides").
- Indium-based transparent conductive oxides include, for example, indium tin oxide (ITO), indium zinc oxide (IZO), indium gallium oxide (IGO), indium gallium zinc oxide (IGZO), or fluorine-doped indium oxide (IFO).
- ITO indium tin oxide
- ITO indium tin oxide
- the tin-based transparent conductive oxide includes, for example, tin oxide, antimony-doped tin oxide (ATO), or fluorine-doped tin oxide (FTO).
- Zinc-based transparent conductive oxides include, for example, zinc oxide, aluminum-doped zinc oxide (AZO), boron-doped zinc oxide, or gallium-doped zinc oxide (GZO).
- the OLED layer 22 is an example of an organic layer including a light emitting layer.
- the OLED layer 22 can emit white light by recombining holes injected from the first electrode 21 and electrons injected from the second electrode 23.
- the OLED layer 22 is provided on the plurality of first electrodes 21.
- the OLED layer 22 is connected between adjacent light emitting elements 20 within the display region R1, and is shared by a plurality of light emitting elements 20 within the display region R1.
- the OLED layer 22 may be an OLED layer having a single layer of light emitting units, an OLED layer having two layers of light emitting units (tandem structure), or an OLED layer having a structure other than these. You can.
- the OLED layer including a single-layer light emitting unit includes, for example, a hole injection layer, a hole transport layer, a red light emitting layer, a light emitting separation layer, a blue light emitting layer, and a green light emitting layer from the first electrode 21 to the second electrode 23. It has a structure in which a layer, an electron transport layer, and an electron injection layer are stacked in this order.
- an OLED layer including a two-layer light emitting unit includes, from the first electrode 21 to the second electrode 23, a hole injection layer, a hole transport layer, a blue light emitting layer, an electron transport layer, a charge generation layer, and a hole injection layer. It has a structure in which a transport layer, a yellow light-emitting layer, an electron transport layer, and an electron injection layer are laminated in this order.
- the hole injection layer can increase the efficiency of hole injection into each light emitting layer and can suppress leakage.
- the hole transport layer can increase hole transport efficiency to each light emitting layer.
- the electron injection layer can increase the efficiency of electron injection into each light emitting layer.
- the electron transport layer can increase electron transport efficiency to each light emitting layer.
- the emission separation layer is a layer that can adjust the injection of carriers into each emission layer, and the emission balance of each color is adjusted by injecting electrons and holes into each emission layer through the emission separation layer. .
- the charge generation layer can supply electrons and holes to the two light emitting layers sandwiching the charge generation layer, respectively.
- the red light emitting layer, the green light emitting layer, the blue light emitting layer, and the yellow light emitting layer each have holes injected from the first electrode 21 or the charge generation layer and holes injected from the second electrode 23 or the charge generation layer by applying an electric field. Recombination with other electrons occurs, and red, green, blue, and yellow light can be emitted.
- the second electrode 23 is a cathode. When a voltage is applied between the first electrode 21 and the second electrode 23, electrons are injected from the second electrode 23 into the OLED layer 22.
- the second electrode 23 is a transparent electrode that is transparent to visible light. In this specification, visible light refers to light in a wavelength range of 360 nm or more and 830 nm.
- the second electrode 23 is provided on the first surface of the OLED layer 22.
- the second electrode 23 is connected between adjacent light emitting elements 20 within the display region R1, and is shared by the plurality of light emitting elements 20 within the display region R1.
- the second electrode 23 is made of a material that has as high transparency as possible and has a small work function in order to increase luminous efficiency.
- the second electrode 23 is made of, for example, at least one of a metal layer and a transparent conductive oxide layer. More specifically, the second electrode 23 is composed of a single-layer film of a metal layer or a transparent conductive oxide layer, or a laminated film of a metal layer and a transparent conductive oxide layer.
- a metal layer may be provided on the OLED layer 22 side, or a transparent conductive oxide layer may be provided on the OLED layer 22 side, but From the viewpoint of placing a layer having a function adjacent to the OLED layer 22, it is preferable that the metal layer is provided on the OLED layer 22 side.
- the metal layer contains, for example, at least one metal selected from the group consisting of magnesium (Mg), aluminum (Al), silver (Ag), calcium (Ca), and sodium (Na).
- the metal layer may include at least one metal as a constituent material of an alloy. Specific examples of the alloy include MgAg alloy, MgAl alloy, and AlLi alloy.
- the transparent conductive oxide layer includes a transparent conductive oxide. Examples of the transparent conductive oxide include the same materials as the transparent conductive oxide of the first electrode 21 described above.
- the insulating layer 12 provides insulation between adjacent first electrodes 21 .
- the insulating layer 12 is provided on the first surface of the circuit board 11 in a portion between the spaced apart first electrodes 21 .
- the insulating layer 12 has a plurality of openings 12A.
- the plurality of openings 12A are provided corresponding to each light emitting element 20, respectively. More specifically, the plurality of openings 12A are each provided on the first surface (the surface on the OLED layer 22 side) of each first electrode 21.
- the first electrode 21 and the OLED layer 22 are in contact with each other through the opening 12A.
- the insulating layer 12 may be an organic insulating layer, an inorganic insulating layer, or a laminate of these.
- the organic insulating layer contains, for example, at least one selected from the group consisting of polyimide resin, acrylic resin, novolak resin, and the like.
- the inorganic insulating layer includes, for example, at least one selected from the group consisting of silicon oxide (SiO x ), silicon nitride (SiN x ), silicon oxynitride (SiO x N y ), and the like.
- the Si-containing layer 13 is a first protective layer that protects the plurality of light emitting elements 20.
- the Si-containing layer 13 is transparent to visible light.
- the Si-containing layer 13 is provided on the first surface of the second electrode 23 and covers the plurality of light emitting elements 20 .
- the Si-containing layer 13 can suppress moisture from entering the plurality of light emitting elements 20 from the external environment.
- the Si-containing layer 13 contains, for example, silicon (Si) and nitrogen (N), or silicon (Si), oxygen (O), and nitrogen (N).
- the Si-containing layer 13 includes, for example, silicon nitride (SiN x ) or silicon oxynitride (SiO x N y ).
- the Si-containing layer 13 may contain silicon (Si) and oxygen (O) on the surface (interface) bonded to the seal portion 18 . In this case, oxygen (O) does not need to be the main component of the Si-containing layer 13.
- the metal oxide layer 14 is a second protective layer that protects the plurality of light emitting elements 20.
- the metal oxide layer 14 is transparent to visible light.
- the metal oxide layer 14 is provided on the Si-containing layer 13 and covers above the plurality of light emitting elements 20 .
- the Si-containing layer 13 can suppress moisture from entering the plurality of light emitting elements 20 from the external environment.
- the metal oxide layer 14 is constituted by a monolayer deposit.
- the metal oxide layer 14 is composed of a monomolecular layer deposit, the effect of the metal oxide layer 14 on suppressing moisture intrusion can be improved.
- the metal oxide layer 14 includes, for example, aluminum oxide (AlO x ) or titanium oxide (TiO x ).
- Metal oxide layer 14 may be an ALD layer.
- FIG. 4A is a plan view showing an example of the Si-containing layer 13 and the metal oxide layer 14.
- FIG. 4B is a cross-sectional view taken along line IVB-IVB in FIG. 4A.
- the periphery of the metal oxide layer 14 is set back relative to the periphery of the Si-containing layer 13.
- the peripheral edge of the first surface of the Si-containing layer 13 is exposed without being covered with the metal oxide layer 14, forming an exposed portion 13A.
- the periphery of the first surface refers to a region having a predetermined width from the periphery of the first surface toward the inside.
- the exposed portion 13A is provided in the seal area R2.
- the exposed portion 13A preferably has a closed loop shape surrounding the display area R1 in plan view.
- Substantially the entire seal region R2 may be the exposed portion 13A. That is, the width of the seal region R2 may be substantially the same as the width of the exposed portion 13A.
- the thickness T1 of the Si-containing layer 13 is preferably 10 ⁇ m or less, more preferably 5 ⁇ m or less.
- the thickness T1 of the Si-containing layer 13 is 10 ⁇ m or less, it is possible to suppress an increase in the distance between the light emitting element 20 and the color filter 15, and therefore it is possible to suppress a decrease in viewing angle characteristics.
- the thickness T2 of the metal oxide layer 14 is preferably 200 nm or less. When the thickness T2 of the metal oxide layer 14 is 200 nm or less, it is possible to suppress a decrease in productivity due to the deposition time of the metal oxide layer 14.
- the lower limit of the thickness T2 of the metal oxide layer 14 is preferably 5 nm or more. When the thickness T2 of the metal oxide layer 14 is 5 nm or more, deterioration in the function of the metal oxide layer 14 as a protective layer can be suppressed.
- the width W of the exposed portion 13A is preferably 5 mm or less, more preferably 2 mm or less.
- Color filter 15 is provided on the first surface of metal oxide layer 14 .
- the color filter 15 is an on-chip color filter (OCCF).
- the color filter 15 includes a plurality of red filter sections 15R, a plurality of green filter sections 15G, and a plurality of blue filter sections 15B.
- the plurality of filter parts 15R, 15G, and 15B are two-dimensionally arranged on the first surface of the metal oxide layer 14 in the same prescribed arrangement pattern as the plurality of light emitting elements 20.
- Each filter section 15R, 15G, 15B is provided above the light emitting element 20.
- the light emitting element 20 and the red filter section 15R provided above the light emitting element 20 constitute a red sub-pixel.
- the light emitting element 20 and the green filter section 15G provided above the light emitting element 20 constitute a green sub-pixel.
- the light emitting element 20 and the blue filter section 15B provided above the light emitting element 20 constitute a blue sub-pixel.
- the red filter section 15R transmits red light among the white light emitted from the light emitting element 20, but absorbs light other than red light.
- the green filter section 15G transmits green light among the white light emitted from the light emitting element 20, but absorbs light other than green light.
- the blue filter section 15B transmits blue light among the white light emitted from the light emitting element 20, but absorbs light other than blue light.
- the red filter section 15R includes, for example, a red color resist.
- the green filter section 15G includes, for example, a green color resist.
- the blue filter section 15B includes, for example, a blue color resist.
- Filled resin layer 16 is provided between color filter 15 and counter substrate 19 .
- the filled resin layer 16 may have a function as an adhesive layer for bonding the color filter 15 and the counter substrate 19 together.
- the filled resin layer 16 includes, for example, at least one selected from the group consisting of thermosetting resins, ultraviolet curable resins, and the like.
- the contact portion 17 is an auxiliary electrode that connects the second electrode 23 to a base wiring or the like (not shown).
- the first surface of the contact portion 17 is connected to the peripheral edge of the second surface of the second electrode 23 .
- the second surface of the contact portion 17 is connected to an underlying wiring or the like via a contact plug.
- the periphery of the second surface refers to a region having a predetermined width from the periphery of the second surface toward the inside.
- the contact portion 17 is provided on the first surface of the circuit board 11 in the seal region R2.
- the contact portion 17 may have a closed loop shape surrounding the display area R1 in plan view.
- the contact portion 17 may be composed of a metal layer, or may be composed of a metal layer and a transparent conductive oxide layer.
- Examples of the constituent materials of the metal layer and the transparent conductive oxide layer include the same materials as those of the metal layer and the transparent conductive oxide layer of the first electrode 21, respectively.
- Contact portion 17 may have the same configuration as first electrode 21 .
- the seal portion 18 bonds the exposed portion 13A of the Si-containing layer 13 and the peripheral edge of the second surface of the counter substrate 19.
- the seal portion 18 is provided between the exposed portion 13A of the Si-containing layer 13 and the peripheral edge of the second surface of the counter substrate 19, and is in direct contact with the exposed portion 13A of the Si-containing layer 13 in the seal region R2.
- the seal portion 18 has a closed loop shape in plan view.
- the seal portion 18 contains organic resin.
- the organic resin may have carbon (C) and hydrogen (O) as main components.
- the organic resin includes, for example, at least one selected from the group consisting of thermosetting resins, ultraviolet curable resins, and the like. More specifically, for example, the organic resin includes at least one selected from the group consisting of epoxy resins, acrylic resins, and the like. Note that the organic resin is not limited to thermosetting resins and ultraviolet curable resins, and may include types of curable resins other than thermosetting resins and ultraviolet curable resins.
- the bonding interface between the Si-containing layer 13 and the seal portion 18 includes Si—O bonds, as shown in FIG. 5B.
- the seal portion 18 contains a silane coupling agent. Since the seal portion 18 contains the silane coupling agent, a Si—O bond can be formed at the bonding interface between the Si-containing layer 13 and the seal portion 18.
- the silane coupling agent may include two reactive group sites X and an alkoxyl group site OR in the molecule.
- the silane coupling agent may be an alkoxysilane compound represented by the general formula It is possible to use any synthetically possible silane coupling agent, if any.
- R in the silane coupling agent is an alkyl group or a derivative thereof.
- the alkyl group is, for example, a methyl group, an ethyl group, a butyl group or an isopropyl group.
- the reactive group site X possessed by the silane coupling agent is, for example, selected from the group consisting of an amino group, a vinyl group, an epoxy group, a methacrylic group, a mercapto group, a sulfide group, an isocyanate group, a ureido group, a chloropropyl group, a hydroxyl group, etc. It has a structure containing at least one selected reactive group.
- the counter substrate 19 seals each member provided on the first surface of the circuit board 11 .
- the counter substrate 19 is transparent to visible light, for example.
- the counter substrate 19 is provided on both the first surface of the filled resin layer 16 and the first surface of the seal portion 18 and faces the circuit board 11 .
- the counter substrate 19 is, for example, a glass substrate.
- first electrode 21 First, a metal layer and a transparent conductive oxide layer are sequentially formed on the first surface of the circuit board 11 by, for example, sputtering, and then the metal layer and the transparent conductive oxide layer are formed by, for example, photolithography and etching. pattern. Thereby, a plurality of first electrodes 21 are formed on the first surface of the circuit board 11.
- the insulating layer 12 is formed on the first surface of the circuit board 11 so as to cover the plurality of first electrodes 21, for example, by a CVD (Chemical Vapor Deposition) method.
- an opening 12A is formed in a portion of the insulating layer 12 located on the first surface of each first electrode 21 by, for example, photolithography technology and dry etching technology.
- a hole transport layer for example, by vapor deposition, a hole transport layer, a red light emitting layer, a light emitting separation layer, a blue light emitting layer, a green light emitting layer, an electron transport layer, and an electron injection layer are formed on the first surfaces of the plurality of first electrodes 21 and insulated.
- the OLED layer 22 is formed by stacking the layers on the first surface of the layer 12 in this order.
- Step of forming second electrode 23 the second electrode 23 is formed on the first surface of the OLED layer 22 by, for example, a vapor deposition method or a sputtering method. As a result, a plurality of light emitting elements 20 are formed on the first surface of the circuit board 11.
- the Si-containing layer 13 is formed on the first surface of the second electrode 23 by, for example, a CVD method.
- a metal oxide layer 14 is formed on the first surface of the Si-containing layer 13, for example by atomic layer deposition (ALD).
- ALD atomic layer deposition
- all or a portion of the metal oxide layer 14 corresponding to the seal region R2 is removed by, for example, photolithography and dry etching. As a result, a closed loop exposed portion 13A surrounding the display area R1 is formed.
- a colored composition for forming a green filter portion is applied onto the first surface of the metal oxide layer 14, and after pattern exposure by irradiating ultraviolet rays through a photomask, the green filter portion 15G is developed. form.
- a colored composition for forming a red filter portion is applied on the first surface of the metal oxide layer 14, and after pattern exposure is performed by irradiating ultraviolet rays through a photomask, the red filter portion 15R is developed. form.
- a colored composition for forming a blue filter portion is applied on the first surface of the metal oxide layer 14, and after pattern exposure is performed by irradiating ultraviolet rays through a photomask, the blue filter portion 15B is developed. form.
- color filter 15 is formed on the first surface of metal oxide layer 14.
- a sealant is applied onto the exposed portion 13A in a closed loop surrounding the display area R1 to form a frame, and then a filling resin is applied to the inside of this frame.
- the counter substrate 19 is placed on the filled resin and sealant.
- the sealant and the filled resin are cured, for example, by at least one of heat treatment and ultraviolet irradiation treatment.
- the counter substrate 19 and the exposed portion 13A are bonded together by the seal portion 18, and the filled resin layer 16 is formed inside the seal portion 18.
- the display device 10 shown in FIGS. 2 and 3 is obtained.
- the method of curing the filled resin and sealant is not limited to heat treatment and ultraviolet irradiation treatment, and may be a curing method other than heat treatment and ultraviolet irradiation treatment.
- SiN x silicon nitride
- SiN x silicon nitride
- the Si-containing layer 13 has an exposed portion 13A not covered with the metal oxide layer 14 in the seal region R2, and the seal portion 18 is located on the exposed portion 13A. is provided and is in direct contact with the exposed portion 13A. Thereby, the adhesion between the seal portion 18 and the base layer can be improved. Therefore, moisture intrusion from the outside of the display device 10 can be suppressed. Therefore, the reliability of the display device 10 can be improved.
- the reliability of the display device 10 can be maintained even when particles 1 are attached during the manufacturing process.
- the inner periphery of the exposed portion 13A may be located outside the inner periphery of the seal region R2.
- the seal portion 18 may be provided on both the exposed portion 13A and the peripheral edge of the first surface of the metal oxide layer 14.
- the Si-containing layer 13 may have a protrusion 13B on the first surface.
- the protruding portion 13B protrudes toward the seal portion 18.
- the top of the protruding portion 13B constitutes an exposed portion 13A that is not covered with the metal oxide layer 14 and is in direct contact with the seal portion 18.
- the shape of the top of the protrusion 13B is not particularly limited, and may be, for example, planar, sloped, or curved. It is preferable that the protruding portion 13B has a closed loop shape surrounding the display area R1 in plan view.
- the protrusion 13B is provided in the seal region R2.
- the protrusion 13B may be provided at the periphery of the first surface of the Si-containing layer 13.
- the metal oxide layer 14 is provided inside the protrusion 13B.
- the width of the seal region R2 may be the same as the width W of the protrusion 13B, or the width of the seal region R2 may be wider than the width W of the protrusion 13B. That is, the seal portion 18 may be provided only on the protrusion 13B, or may be provided on both the protrusion 13B and the peripheral edge of the first surface of the metal oxide layer 14.
- the height of the first surface of the metal oxide layer 14 and the height H of the protrusion 13B may be the same, and the first surface of the metal oxide layer 14 and the top of the protrusion 13B may be flush with each other. .
- the height H of the protrusion 13B is preferably 5 nm or more and 200 nm or less. From the viewpoint of narrowing the frame of the display device 10, the width W of the protruding portion 13B is preferably 5 mm or less, more preferably 2 mm or less.
- the protrusion 13B may be made of the same material as the Si-containing layer 13.
- Modification 3 In Modification 2, an example was described in which the height of the first surface of the metal oxide layer 14 and the height H of the protrusion 13B are the same, but as shown in FIGS. 9A and 9B, the height of the protrusion 13B is H may be higher than the height of the first surface of the metal oxide layer 14. Alternatively, the height H of the protrusion 13B may be lower than the height of the first surface of the metal oxide layer 14.
- the tip of the protrusion 13B may protrude toward the center of the display region R1 and cover the peripheral portion of the first surface of the metal oxide layer 14.
- the cross section of the protrusion 13B may have an L-shape.
- the metal oxide layer 14 may have an opening 14A in the seal region R2 outside the display region R1.
- a part of the first surface of the Si-containing layer 13 may be exposed through the opening 14A, forming an exposed portion 13A.
- a portion of the seal portion 18 is filled in the opening 14A, and the seal portion 18 directly contacts the exposed portion 13A through the opening 14A. It is preferable that the opening 14A has a closed loop shape surrounding the display area R1 in plan view.
- the opening 14A is provided in the seal region R2.
- the opening 14A may be provided along the periphery of the metal oxide layer 14.
- the width of the seal region R2 may be the same as the width of the opening 14A, or the width of the seal region R2 may be wider than the width of the opening 14A.
- the depth D of the opening 14A is preferably 5 nm or more and 200 nm or less. From the viewpoint of narrowing the frame of the display device 10, the width W of the opening 14A is preferably 5 mm or less, more preferably 2 mm or less.
- FIG. 12 is a cross-sectional view showing an example of the configuration of a display device 10A according to the second embodiment.
- the display device 10A further includes a Si-containing layer 31 on the first surface of the metal oxide layer 14, and the side surfaces of the Si-containing layer 13, the metal oxide layer 14, and the Si-containing layer 31 are substantially aligned. This is different from the display device 10 according to the first embodiment in that the display device 10 is different from the display device 10 according to the first embodiment.
- the Si-containing layer 13 and the Si-containing layer 31 are examples of a first Si-containing layer and a second Si-containing layer, respectively.
- the Si-containing layer 31 is a third protective layer that protects the plurality of light emitting elements 20.
- the Si-containing layer 31 is transparent to visible light.
- the Si-containing layer 31 is provided on the first surface of the metal oxide layer 14 and covers substantially the entire first surface of the metal oxide layer 14 .
- the Si-containing layer 31 can suppress moisture from entering the plurality of light emitting elements 20 from the external environment.
- the same material as the Si-containing layer 13 can be exemplified.
- the Si-containing layer 31 and the Si-containing layer 13 may be made of the same material, or may be made of different materials.
- the seal portion 18 is in direct contact with the first surface of the Si-containing layer 31 in the seal region R2 outside the display region R1.
- the bonding interface between the Si-containing layer 31 and the seal portion 18 includes a Si—O bond.
- the Si-containing layer 31 is provided on the first surface of the metal oxide layer 14, and the sealing section 18 is provided on the first surface of the Si-containing layer 31 in the sealing region R2 outside the display region R1. are in direct contact with. Thereby, the adhesion between the seal portion 18 and the base layer can be improved. Therefore, moisture intrusion from the outside of the display device 10A can be suppressed. Therefore, the reliability of the display device 10A can be improved.
- a side wall 32 may be provided to cover the side surface of the metal oxide layer 14.
- the side wall 32 is provided in the seal area R2 outside the display area R1.
- the sidewall 32 may have a closed loop shape surrounding the side surface of the metal oxide layer 14 in plan view.
- the peripheral edge of the first surface of the Si-containing layer 13 and the peripheral edge of the second surface of the Si-containing layer 31 may be connected by the side wall 32. That is, the metal oxide layer 14 may be provided inside one protective layer.
- the sidewall 32 may be made of the same material as the Si-containing layer 13 and/or the Si-containing layer 31.
- the Si-containing layer 31 may be provided only in the seal region R2 outside the display region R1. At least a portion of the seal portion 18 is in contact with the first surface of the Si-containing layer 31.
- the width of the sealing region R2 may be the same as the width W of the Si-containing layer 31, or the width of the sealing region R2 may be wider than the width W of the Si-containing layer 31. That is, the seal portion 18 may be provided only on the first surface of the Si-containing layer 31, or may be provided on both the first surface of the Si-containing layer 31 and the first surface of the metal oxide layer 14. may be provided. It is preferable that the Si-containing layer 31 has a closed loop shape surrounding the display area R1 in plan view.
- the width W of the Si-containing layer 31 is preferably 5 mm or less, more preferably 2 mm or less, from the viewpoint of narrowing the frame of the display device 10A.
- the materials exemplified in the first embodiment, the second embodiment, and their modifications can be used alone or in combination of two or more, unless otherwise specified.
- the light emitting element is an OLED element
- the light emitting element is not limited to this example, and may be a light emitting diode or a semiconductor. It may also be a laser or the like. Further, two or more types of OLED elements, light emitting diodes, semiconductor lasers, etc. may be combined.
- the light-emitting device is a display device
- the light-emitting device is not limited to a display device, and may be a lighting device or the like. There may be.
- the lighting device may include one light emitting element or a plurality of light emitting elements.
- the encapsulation device is a light-emitting device (specifically, a display device)
- the encapsulation device is limited to a light-emitting device. Instead, it may be a light-receiving device or the like that includes one or more light-receiving elements.
- the light receiving element may be, for example, a photodiode, a solar cell, or a CMOS image sensor.
- the present disclosure can also adopt the following configuration.
- a plurality of light emitting elements provided in a display area; a Si-containing layer covering the plurality of light emitting elements; a metal oxide layer provided on the Si-containing layer; a seal portion provided outside the display area and containing an organic resin;
- the Si-containing layer has an exposed portion not covered with the metal oxide layer outside the display area, and the seal portion is in contact with the exposed portion.
- the seal portion is provided on the exposed portion or on both the exposed portion and the metal oxide layer.
- the exposed portion is configured by a peripheral edge of the metal oxide layer receding with respect to a peripheral edge of the Si-containing layer.
- the Si-containing layer has a protrusion outside the display area that protrudes toward the sealing part, the protruding portion constitutes the exposed portion;
- a tip of the protrusion covers a peripheral edge of the upper surface of the metal oxide layer;
- the metal oxide layer has an opening outside the display area;
- the exposed portion is configured by exposing the Si-containing layer from the opening.
- the thickness of the Si-containing layer is 10 ⁇ m or less,
- the thickness of the metal oxide layer is 5 nm or more and 200 nm or less,
- the width of the exposed portion is 5 mm or less, The light emitting device according to any one of (1) to (7).
- the Si-containing layer contains silicon (Si) and nitrogen (N), or silicon (Si), oxygen (O) and nitrogen (N).
- the metal oxide layer is composed of a monomolecular layer, The light emitting device according to any one of (1) to (9).
- the interface between the Si-containing layer and the sealing portion includes a Si—O bond.
- the seal portion includes a silane coupling agent.
- the seal portion includes at least one of an ultraviolet curable resin and a thermosetting resin.
- the seal portion has a closed loop shape in plan view.
- a plurality of light emitting elements provided in a display area; a first Si-containing layer covering the plurality of light emitting elements; a metal oxide layer provided on the first Si-containing layer; a second Si-containing layer provided on the metal oxide layer; a seal portion provided outside the display area and containing an organic resin; The seal portion is in contact with the second Si-containing layer outside the display area.
- the second Si-containing layer has a closed loop shape in plan view.
- the light emitting device according to (15). (17) further comprising a side wall portion that covers a side surface of the metal oxide layer;
- An electronic device comprising the light emitting device according to any one of (1) to (17). (19) a plurality of elements provided in the element formation region; a Si-containing layer covering the plurality of elements; a metal oxide layer provided on the Si-containing layer; a seal portion provided outside the element formation region and containing an organic resin;
- the Si-containing layer has an exposed portion not covered with the metal oxide layer outside the element formation region, and the seal portion is in contact with the exposed portion. Sealing device.
- a plurality of elements provided in the element formation region; a first Si-containing layer covering the plurality of elements; a metal oxide layer provided on the first Si-containing layer; a second Si-containing layer provided on the metal oxide layer; a seal portion provided outside the element formation region and containing an organic resin; the seal portion is in contact with the second Si-containing layer outside the element formation region; Sealing device.
- the display devices 10 and 10A (hereinafter referred to as "display device 10, etc.") according to the above embodiments and modifications thereof may be included in various electronic devices.
- the display device 10 and the like are particularly suitable for devices that require high resolution and are used close to the eyes, such as electronic viewfinders of video cameras or single-lens reflex cameras, or head-mounted displays.
- 15A and 15B show an example of the appearance of the digital still camera 310.
- This digital still camera 310 is a single-lens reflex type with interchangeable lenses, and has an interchangeable photographic lens unit (interchangeable lens) 312 approximately in the center of the front of a camera body 311, and on the left side of the front. It has a grip part 313 for the photographer to hold.
- interchangeable photographic lens unit interchangeable lens
- a monitor 314 is provided at a position shifted to the left from the center of the back surface of the camera body 311.
- An electronic viewfinder (eyepiece window) 315 is provided at the top of the monitor 314 . By looking through the electronic viewfinder 315, the photographer can visually recognize the light image of the subject guided from the photographic lens unit 312 and determine the composition.
- the electronic viewfinder 315 includes any one of the display devices 10 and the like described above.
- FIG. 16 shows an example of the appearance of the head mounted display 320.
- the head-mounted display 320 has, for example, ear hooks 322 on both sides of a glasses-shaped display section 321 to be worn on the user's head.
- the display unit 321 includes any one of the display devices 10 and the like described above.
- FIG. 17 shows an example of the appearance of the television device 330.
- This television device 330 has a video display screen section 331 that includes, for example, a front panel 332 and a filter glass 333, and this video display screen section 331 includes one of the display devices 10 described above.
- FIG. 18 shows an example of the appearance of the see-through head-mounted display 340.
- the see-through head-mounted display 340 includes a main body 341, an arm 342, and a lens barrel 343.
- the main body portion 341 is connected to the arm 342 and the glasses 350. Specifically, an end of the main body 341 in the long side direction is coupled to the arm 342, and one side of the main body 341 is coupled to the glasses 350 via a connecting member. Note that the main body portion 341 may be directly attached to the human head.
- the main body section 341 incorporates a control board for controlling the operation of the see-through head-mounted display 340 and a display section.
- the arm 342 connects the main body portion 341 and the lens barrel 343 and supports the lens barrel 343. Specifically, the arm 342 is coupled to an end of the main body portion 341 and an end of the lens barrel 343, respectively, and fixes the lens barrel 343. Further, the arm 342 has a built-in signal line for communicating data related to an image provided from the main body 341 to the lens barrel 343.
- the lens barrel 343 projects image light provided from the main body 341 via the arm 342 through the eyepiece 351 toward the eyes of the user wearing the see-through head-mounted display 340.
- the display section of the main body section 341 includes any one of the display devices 10 and the like described above.
- FIG. 19 shows an example of the appearance of the smartphone 360.
- the smartphone 360 includes a display section 361 that displays various information, and an operation section 362 that includes buttons and the like that accept operation inputs from the user.
- the display unit 361 includes any one of the display devices 10 and the like described above.
- the display device 10 and the like described above may be included in various displays provided in a vehicle.
- FIGS. 20A and 20B are diagrams showing an example of the internal configuration of a vehicle 500 equipped with various displays. Specifically, FIG. 20A is a diagram showing an example of the interior of the vehicle 500 from the rear to the front of the vehicle 500, and FIG. 20B is a diagram showing an example of the interior of the vehicle 500 from the diagonal rear to the diagonal front of the vehicle 500. It is a figure showing an example.
- the vehicle 500 includes a center display 501, a console display 502, a head-up display 503, a digital rear mirror 504, a steering wheel display 505, and a rear entertainment display 506. At least one of these displays includes one of the display devices 10 and the like described above. For example, all of these displays may include one of the display devices 10 and the like described above.
- the center display 501 is arranged on a part of the dashboard facing the driver's seat 508 and the passenger seat 509.
- FIGS. 20A and 20B show an example of a horizontally long center display 501 extending from the driver's seat 508 side to the passenger seat 509 side
- the screen size and placement location of the center display 501 are arbitrary.
- Center display 501 can display information detected by various sensors. As a specific example, the center display 501 displays images taken by an image sensor, distance images to obstacles in front and sides of the vehicle 500 measured by a ToF sensor, and passenger body temperature detected by an infrared sensor. etc. can be displayed.
- Center display 501 can be used, for example, to display at least one of safety-related information, operation-related information, life log, health-related information, authentication/identification-related information, and entertainment-related information.
- Safety-related information includes information such as detection of falling asleep, detection of looking away, detection of mischief by children in the same vehicle, presence or absence of seatbelts, and detection of leaving passengers behind. This information is detected by The operation-related information uses sensors to detect gestures related to operations by the occupant.
- the sensed gestures may include manipulation of various equipment within vehicle 500. For example, the operation of air conditioning equipment, navigation equipment, AV equipment, lighting equipment, etc. is detected.
- the life log includes life logs of all crew members. For example, a life log includes a record of the actions of each occupant during the ride. By acquiring and saving life logs, it is possible to check the condition of the occupants at the time of the accident.
- the body temperature of the occupant is detected using a sensor such as a temperature sensor, and the health condition of the occupant is estimated based on the detected body temperature.
- a sensor such as a temperature sensor
- an image sensor may be used to capture an image of the occupant's face, and the occupant's health condition may be estimated from the captured facial expression.
- Authentication/identification related information includes a keyless entry function that performs facial recognition using a sensor, and a function that automatically adjusts seat height and position using facial recognition.
- the entertainment-related information includes a function that uses a sensor to detect operation information of an AV device by a passenger, a function that recognizes the passenger's face using a sensor, and provides the AV device with content suitable for the passenger.
- the console display 502 can be used, for example, to display life log information.
- Console display 502 is arranged near shift lever 511 on center console 510 between driver's seat 508 and passenger seat 509.
- the console display 502 can also display information detected by various sensors. Further, the console display 502 may display an image around the vehicle captured by an image sensor, or may display a distance image to an obstacle around the vehicle.
- the head-up display 503 is virtually displayed behind the windshield 512 in front of the driver's seat 508.
- Head-up display 503 can be used, for example, to display at least one of safety-related information, operation-related information, life log, health-related information, authentication/identification-related information, and entertainment-related information. Since the head-up display 503 is often virtually placed in front of the driver's seat 508, it is difficult to display information directly related to the operation of the vehicle 500, such as the speed of the vehicle 500 and the remaining amount of fuel (battery). Are suitable.
- the digital rear mirror 504 can display not only the rear of the vehicle 500 but also the state of the occupants in the rear seats. Therefore, by arranging a sensor on the back side of the digital rear mirror 504, it can be used for displaying life log information, for example. be able to.
- the steering wheel display 505 is placed near the center of the steering wheel 513 of the vehicle 500.
- Steering wheel display 505 can be used, for example, to display at least one of safety-related information, operation-related information, lifelog, health-related information, authentication/identification-related information, and entertainment-related information.
- life log information such as the driver's body temperature, and information regarding the operation of AV equipment, air conditioning equipment, etc. There is.
- the rear entertainment display 506 is attached to the back side of the driver's seat 508 and passenger seat 509, and is for viewing by passengers in the rear seats.
- Rear entertainment display 506 can be used, for example, to display at least one of safety-related information, operation-related information, lifelog, health-related information, authentication/identification-related information, and entertainment-related information.
- information relevant to the rear seat occupant is displayed. For example, information regarding the operation of the AV device or air conditioning equipment may be displayed, or the results of measuring the body temperature of the passenger in the rear seat using a temperature sensor may be displayed.
- a configuration may also be adopted in which a sensor is placed on the back side of the display device 10 etc. so that the distance to objects existing in the surroundings can be measured.
- optical distance measurement methods There are two main types of optical distance measurement methods: passive and active.
- a passive type sensor measures distance by receiving light from an object without emitting light from the sensor to the object.
- Passive types include lens focusing, stereo, and monocular viewing.
- the active type measures distance by projecting light onto an object and receiving the reflected light from the object with a sensor.
- Active types include an optical radar method, an active stereo method, a photometric stereo method, a moiré topography method, and an interferometry method.
- the display device 10 and the like described above can be applied to any of these methods of distance measurement.
- the above-described passive or active distance measurement can be performed by using a sensor that is stacked on the back side of the display device 10 or the like.
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Abstract
Description
表示領域に設けられた複数の発光素子と、
複数の発光素子を覆うSi含有層と、
Si含有層上に設けられた金属酸化物層と、
表示領域の外側に設けられ、有機樹脂を含むシール部と
を備え、
Si含有層は、表示領域の外側において金属酸化物層に覆われず露出した露出部を有し、シール部は、露出部と接触している。
表示領域に設けられた複数の発光素子と、
複数の発光素子を覆う第1のSi含有層と、
第1のSi含有層上に設けられた金属酸化物層と、
金属酸化物層上に設けられた第2のSi含有層と、
表示領域の外側に設けられ、有機樹脂を含むシール部と
を備え、
シール部は、表示領域の外側において第2のSi含有層と接触している。
素子形成領域に設けられた複数の素子と、
複数の素子を覆うSi含有層と、
Si含有層上に設けられた金属酸化物層と、
素子形成領域の外側に設けられ、有機樹脂を含むシール部と
を備え、
Si含有層は、素子形成領域の外側において金属酸化物層に覆われず露出した露出部を有し、シール部は、露出部と接触している。
素子形成領域に設けられた複数の素子と、
複数の素子を覆う第1のSi含有層と、
第1のSi含有層上に設けられた金属酸化物層と、
金属酸化物層上に設けられた第2のSi含有層と、
素子形成領域の外側に設けられ、有機樹脂を含むシール部と
を備え、
シール部は、素子形成領域の外側において第2のSi含有層と接触している。
本開示に係る第2の電子機器は、第1の封止デバイスまたは第2の封止デバイスを備える。
1 概要
2 第1の実施形態(表示装置の例)
3 第2の実施形態(表示装置の例)
4 変形例
5 応用例(電子機器の例)
図1に示すように、シール部18が金属酸化物層14上に設けられていると、金属酸化物層14に対するシール部18の密着性が低いため、水分が表示装置100の外部から内部に侵入しやすい。表示装置100の内部への水分侵入は、表示装置100の信頼性を低下する原因となる。特に、以下のようなプロセスで発生する水分侵入は、表示装置100の信頼性を低下する大きな原因となることがある。
(1)表示装置100の製造工程中(特に有機層や金属層の形成時)にパーティクル1が付着する。
(2)その後形成される保護層(Si含有層13や金属酸化物層14)のカバレッジ(被覆性)がパーティクル起因で悪化し、リークパスが形成される。
(3)水分がシール部18の剥がれ等を起点にリークパスを介して表示装置100の内部に侵入し、表示装置100の信頼性に悪影響を与える。図1中の矢印は、表示装置100の内部への水分の侵入経路を示す。
[表示装置10の構成]
図2は、第1の実施形態に係る表示装置10の外観の一例を示す平面図である。図3は、図2のIII-III線に沿った断面図である。表示装置10は、表示領域R1とシール領域R2とを有する。表示領域R1は、複数の発光素子20が形成されている素子形成領域である。表示領域R1は、例えば、平面視において四角形状を有する。四角形状としては、例えば、長方形状、平行四辺形状等が挙げられるが、これら以外の四角形状であってもよい。本明細書において、長方形状には、正方形状も含まれるものとする。なお、表示領域R1の形状は四角形状に限定されるものではなく、任意の形状に選択することができ、例えば、四角形状以外の多角形状、円形状、楕円形状等であってもよい。シール領域R2は、シール部18が設けられている領域である。シール領域R2は、表示領域R1の外側に位置する。シール領域R2は、平面視において、表示領域R1を囲む閉ループ状を有している。図2では、シール領域R2が表示領域R1に隣接している例が示されているが、シール領域R2が表示領域R1の間にスペースが設けられ、両領域が離隔されていてもよい。
回路基板11は、いわゆるバックプレーンであり、複数の発光素子20を駆動する。回路基板11は、基板を備える。複数の配線、複数の発光素子20を駆動する駆動回路、および複数の発光素子20に電力を供給する電源回路(いずれも図示せず)等が、基板の第1面に設けられている。絶縁層が、基板の第1面を覆い、基板の第1面を平坦化している。
発光素子20は、白色OLED素子であり、駆動回路等の制御に基づき、白色光を発光することができる。白色OLED素子は、白色Micro-OLED(MOLED)素子であってもよい。複数の発光素子20は、規定の配置パターンで回路基板11の第1面上に2次元配置されている。発光素子20は、第1電極21と、OLED層22と、第2電極23とを順に回路基板11の第1面上に備える。
第1電極21は、アノードである。第1電極21と第2電極23の間に電圧が加えられると、第1電極21からOLED層22にホールが注入される。第1電極21は、発光素子20の厚さ方向に垂直な平面状を有している。第1電極21は、隣接する発光素子20の間で分断され、複数の発光素子20で別々に設けられている。複数の第1電極21は、複数の発光素子20と同様の配置パターンで回路基板11の第1面上に2次元配置されている。
OLED層22は、発光層を含む有機層の一例である。OLED層22は、第1電極21から注入された正孔と第2電極23から注入された電子との再結合により、白色光を発光することができる。
第2電極23は、カソードである。第1電極21と第2電極23の間に電圧が加えられると、第2電極23からOLED層22に電子が注入される。第2電極23は、可視光に対して透明性を有する透明電極である。本明細書において、可視光とは、360nm以上830nmの波長域の光をいう。第2電極23は、OLED層22の第1面上に設けられている。第2電極23は、表示領域R1内において、隣接する発光素子20間で繋がり、表示領域R1内において複数の発光素子20に共有されている。
絶縁層12は、隣接する第1電極21の間を絶縁する。絶縁層12は、回路基板11の第1面のうち、離隔された第1電極21の間の部分に設けられている。絶縁層12は、複数の開口12Aを有する。複数の開口12Aはそれぞれ、各発光素子20に対応して設けられている。より具体的には、複数の開口12Aはそれぞれ、各第1電極21の第1面(OLED層22側の面)上に設けられている。開口12Aを介して、第1電極21とOLED層22とが接触する。
Si含有層13は、複数の発光素子20を保護する第1保護層である。Si含有層13は、可視光に対して透明性を有している。Si含有層13は、第2電極23の第1面上に設けられ、複数の発光素子20を覆う。Si含有層13は、外部環境から複数の発光素子20への水分浸入を抑制することができる。
カラーフィルタ15は、金属酸化物層14の第1面上に設けられている。カラーフィルタ15は、オンチップカラーフィルタ(On Chip Color Filter:OCCF)である。カラーフィルタ15は、複数の赤色フィルタ部15Rと、複数の緑色フィルタ部15Gと、複数の青色フィルタ部15Bとを備える。
充填樹脂層16は、カラーフィルタ15と対向基板19の間に設けられている。充填樹脂層16は、カラーフィルタ15と対向基板19とを接着する接着層としての機能を有していてもよい。充填樹脂層16は、例えば、熱硬化性樹脂および紫外線硬化性樹脂等からなる群より選ばれた少なくとも1種を含む。
コンタクト部17は、第2電極23と下地配線等(図示せず)を接続する補助電極である。コンタクト部17の第1面は、第2電極23の第2の面の周縁部に接続されている。一方、コンタクト部17の第2面は、コンタクトプラグを介して下地配線等に接続されている。本明細書において、第2の面の周縁部とは、第2の面の周縁から内側に向かって、所定の幅を有する領域をいう。
シール部18は、Si含有層13の露出部13Aと対向基板19の第2の面の周縁部を貼り合わせる。シール部18は、Si含有層13の露出部13Aと対向基板19の第2の面の周縁部の間に設けられ、シール領域R2においてSi含有層13の露出部13Aと直接接触している。シール部18は、平面視において閉ループ状を有している。
対向基板19は、回路基板11の第1面上に設けられた各部材を封止する。対向基板19は、例えば、可視光に対して透明性を有する。対向基板19は、充填樹脂層16の第1面およびシール部18の第1の面の両方の上に設けられ、回路基板11に対向している。対向基板19は、例えば、ガラス基板である。
以下、第1の実施形態に係る表示装置10の製造方法の一例について説明する。
まず、例えばスパッタリング法により、金属層、透明導電性酸化物層を回路基板11の第1面上に順次形成したのち、例えばフォトリソグラフィ技術およびエッチング技術を用いて金属層および透明導電性酸化物層をパターニングする。これにより、複数の第1電極21が回路基板11の第1面上に形成される。
次に、例えばCVD(Chemical Vapor Deposition)法により、複数の第1電極21を覆うように回路基板11の第1面上に絶縁層12を形成する。次に、例えばフォトリソグラフィ技術およびドライエッチング技術により、絶縁層12のうち、各第1電極21の第1面上に位置する部分に開口12Aを形成する。
次に、例えば蒸着法により、正孔輸送層、赤色発光層、発光分離層、青色発光層、緑色発光層、電子輸送層、電子注入層を複数の第1電極21の第1面上および絶縁層12の第1面上にこの順序で積層することにより、OLED層22を形成する。
次に、例えば蒸着法またはスパッタリング法により、第2電極23をOLED層22の第1面上に形成する。これにより、回路基板11の第1面上に複数の発光素子20が形成される。
次に、例えばCVD法により、Si含有層13を第2電極23の第1面上に形成する。
次に、例えば原子層堆積(Atomic Layer Deposition:ALD)により、金属酸化物層14をSi含有層13の第1面上に形成する。次に、例えばフォトリソグラフィ技術およびドライエッチング技術により、金属酸化物層14のうち、シール領域R2に対応する部分の全部または一部を除去する。これにより、表示領域R1を囲む閉ループ状の露出部13Aが形成される。
次に、金属酸化物層14の第1面上に緑色フィルタ部形成用の着色組成物を塗布し、フォトマスクを介して紫外線を照射しパターン露光した後、現像することにより、緑色フィルタ部15Gを形成する。次に、金属酸化物層14の第1面上に赤色フィルタ部形成用の着色組成物を塗布し、フォトマスクを介して紫外線を照射しパターン露光した後、現像することにより、赤色フィルタ部15Rを形成する。次に、金属酸化物層14の第1面上に青色フィルタ部形成用の着色組成物を塗布し、フォトマスクを介して紫外線を照射しパターン露光した後、現像することにより、青色フィルタ部15Bを形成する。これにより、金属酸化物層14の第1面上にカラーフィルタ15が形成される。
次に、表示領域R1を囲む閉ループ状にシール剤を露出部13A上に塗布し、枠を形成したのち、この枠の内側に充填樹脂を塗布する。次に、対向基板19を充填樹脂およびシール剤の上に載置する。次に、例えば、熱処理および紫外線照射処理の少なくとも一方の処理によりシール剤および充填樹脂を硬化させる。これにより、シール部18により対向基板19と露出部13Aとが貼り合わされると共に、シール部18の内側に充填樹脂層16が形成される。以上により、図2、図3に示す表示装置10が得られる。なお、充填樹脂およびシール剤の硬化方法は、熱処理および紫外線照射処理に限定されるものではなく、熱処理および紫外線照射処理以外の硬化方法であってもよい。
シール部18がシランカップリング剤を含む場合、以下のメカニズムによりシール部18の密着性が改善すると推測される。
封止工程において、図5Aに示すように、シランカップリング剤を含むシール剤18Aが露出部13A上に塗布される。塗布後、シール剤18Aが熱処理されるか、もしくはシール剤18Aに紫外線が照射されると、図5Bに示すように、シール剤18Aに含まれるシランカップリング剤とSi含有層13に含まれる材料(例えば窒化シリコン(SiNx))との反応が促進され、Si含有層13とシール剤18Aの接合界面にSi-O結合が形成される。これにより、Si含有層13とシール剤18Aの接合界面の密着性が改善する。
第1の実施形態に係る表示装置10では、Si含有層13は、金属酸化物層14に覆われず露出した露出部13Aをシール領域R2に有し、シール部18は、露出部13A上に設けられ、露出部13Aと直接接触している。これにより、シール部18と下地層の密着性を向上させることができる。したがって、表示装置10の外部からの水分侵入を抑制することができる。よって、表示装置10の信頼性を向上させることができる。
(変形例1)
第1の実施形態では、シール領域R2の略全体が露出部13Aである例について説明したが、シール領域R2の少なくとも一部が露出部13Aであってもよい。すなわち、図3に示すように、シール領域R2の幅が露出部13Aの幅と同一であってもよいし、図7に示すように、シール領域R2の幅が露出部13Aの幅よりも広くてもよい。あるいはシール領域R2の幅が露出部13Aの幅よりも狭くてもよい。なお、シール領域R2の幅は、シール部18の幅に等しい。
図8A、図8Bに示すように、Si含有層13が、突出部13Bを第1面に有していてもよい。突出部13Bは、シール部18に向けて突出している。突出部13Bの頂部が、金属酸化物層14に覆われず露出した露出部13Aを構成し、シール部18と直接接触する。突出部13Bの頂部の形状は特に限定されるものではないが、例えば、平面状、斜面状または湾曲面状等であってもよい。突出部13Bは、平面視において、表示領域R1を囲む閉ループ状を有していることが好ましい。
変形例2では、金属酸化物層14の第1面の高さと突出部13Bの高さHが同一である例について説明したが、図9A、図9Bに示すように、突出部13Bの高さHが、金属酸化物層14の第1面の高さよりも高くてもよい。あるいは、突出部13Bの高さHが、金属酸化物層14の第1面の高さよりも低くてもよい。
図10A、図10Bに示すように、突出部13Bの先端部が、表示領域R1の中心に向かって突出し、金属酸化物層14の第1面の周縁部分を覆っていてもよい。突出部13Bの断面は、L字状を有していてもよい。
図11A、図11Bに示すように、金属酸化物層14が、表示領域R1の外側のシール領域R2に開口14Aを有していてもよい。Si含有層13の第1面の一部が開口14Aにより露出し、露出部13Aが構成されていてもよい。シール部18の一部は、開口14A内に充填されており、シール部18は、開口14Aを介して露出部13Aと直接接触する。開口14Aは、平面視において、表示領域R1を囲む閉ループ状を有していることが好ましい。
[表示装置10Aの構成]
図12は、第2の実施形態に係る表示装置10Aの構成の一例を示す断面図である。表示装置10Aは、金属酸化物層14の第1面上にSi含有層31をさらに備え、かつ、Si含有層13、金属酸化物層14およびSi含有層31の側面の位置は略一致している点において、第1の実施形態に係る表示装置10とは異なっている。Si含有層13、Si含有層31はそれぞれ、第1のSi含有層、第2のSi含有層の一例である。
第2の実施形態では、Si含有層31が金属酸化物層14の第1面上に設けられ、シール部18は、表示領域R1の外側のシール領域R2において、Si含有層31の第1面に直接接触している。これにより、シール部18と下地層の密着性を向上させることができる。したがって、表示装置10Aの外部からの水分侵入を抑制することができる。よって、表示装置10Aの信頼性を向上させることができる。
(変形例1)
図13A、図13Bに示すように、金属酸化物層14の側面を覆う側壁32が備えられていてもよい。側壁32は、表示領域R1の外側のシール領域R2に設けられている。側壁32は、平面視において、金属酸化物層14の側面を囲む閉ループ状を有していてもよい。Si含有層13の第1面の周縁部とSi含有層31の第2面の周縁部とが、側壁32により繋がっていてもよい。すなわち、金属酸化物層14が、1つの保護層の内部に設けられた構成を有していてもよい。側壁32は、Si含有層13および/またはSi含有層31と同様の材料により構成されていてもよい。
図14A、図14Bに示すように、Si含有層31が、表示領域R1の外側のシール領域R2にのみ設けられていてもよい。シール部18の少なくとも一部が、Si含有層31の第1面に接している。シール領域R2の幅がSi含有層31の幅Wと同一であってもよいし、シール領域R2の幅がSi含有層31の幅Wよりも広くてもよい。すなわち、シール部18は、Si含有層31の第1面の上のみに設けられていてもよいし、Si含有層31の第1面と金属酸化物層14の第1面の両方の上に設けられてもよい。Si含有層31は、平面視において、表示領域R1を囲む閉ループ状を有していることが好ましい。Si含有層31の幅Wは、表示装置10Aの狭額縁化の観点から、好ましくは5mm以下、より好ましくは2mm以下である。
以上、本開示の第1の実施形態、第2の実施形態およびそれらの変形例について具体的に説明したが、本開示は、上記の第1の実施形態、第2の実施形態およびそれらの変形例に限定されるものではなく、本開示の技術的思想に基づく各種の変形が可能である。
受光素子は、例えば、フォトダイオード、太陽電池またはCMOSイメージセンサであってもよい。
(1)
表示領域に設けられた複数の発光素子と、
前記複数の発光素子を覆うSi含有層と、
前記Si含有層上に設けられた金属酸化物層と、
前記表示領域の外側に設けられ、有機樹脂を含むシール部と
を備え、
前記Si含有層は、前記表示領域の外側において前記金属酸化物層に覆われず露出した露出部を有し、前記シール部は、前記露出部と接触している、
発光装置。
(2)
前記シール部は、前記露出部の上、または前記露出部と前記金属酸化物層の両方の上に設けられている、
(1)に記載の発光装置。
(3)
前記露出部は、前記金属酸化物層の周縁が前記Si含有層の周縁に対して後退することにより構成されている、
(1)または(2)に記載の発光装置。
(4)
前記Si含有層が、前記表示領域の外側に、前記シール部に向かって突出した突出部を有し、
前記突出部が、前記露出部を構成する、
(1)または(2)に記載の発光装置。
(5)
前記突出部の先端部が、前記金属酸化物層の上面の周縁部を覆う、
(4)に記載の発光装置。
(6)
前記金属酸化物層が、前記表示領域の外側に開口を有し、
前記露出部は、前記開口から前記Si含有層が露出することにより構成される、
(1)または(2)に記載の発光装置。
(7)
前記Si含有層の厚さは、10μm以下であり、
前記金属酸化物層の厚さは、5nm以上200nm以下である、
(1)から(6)のいずれか1項に記載の発光装置。
(8)
前記露出部の幅は、5mm以下である、
(1)から(7)のいずれか1項に記載の発光装置。
(9)
前記Si含有層は、ケイ素(Si)および窒素(N)、またはケイ素(Si)、酸素(O)および窒素(N)を含む、
(1)から(8)のいずれか1項に記載の発光装置。
(10)
前記金属酸化物層は、単分子層により構成されている、
(1)から(9)のいずれか1項に記載の発光装置。
(11)
前記Si含有層と前記シール部との界面は、Si-O結合を含む、
(1)から(10)のいずれか1項に記載の発光装置。
(12)
前記シール部は、シランカップリング剤を含む、
(1)から(11)のいずれか1項に記載の発光装置。
(13)
前記シール部は、紫外線硬化性樹脂および熱硬化性樹脂のうちの少なくとも1種を含む、
(1)から(12)のいずれか1項に記載の発光装置。
(14)
前記シール部は、平面視において閉ループ状を有している、
(1)から(13)のいずれか1項に記載の発光装置。
(15)
表示領域に設けられた複数の発光素子と、
前記複数の発光素子を覆う第1のSi含有層と、
前記第1のSi含有層上に設けられた金属酸化物層と、
前記金属酸化物層上に設けられた第2のSi含有層と、
前記表示領域の外側に設けられ、有機樹脂を含むシール部と
を備え、
前記シール部は、前記表示領域の外側において前記第2のSi含有層と接触している、
発光装置。
(16)
前記第2のSi含有層は、平面視において閉ループ状を有している、
(15)に記載の発光装置。
(17)
前記金属酸化物層の側面を覆う側壁部をさらに備える、
(15)に記載の発光装置。
(18)
(1)から(17)のいずれか1項に記載の発光装置を備える電子機器。
(19)
素子形成領域に設けられた複数の素子と、
前記複数の素子を覆うSi含有層と、
前記Si含有層上に設けられた金属酸化物層と、
前記素子形成領域の外側に設けられ、有機樹脂を含むシール部と
を備え、
前記Si含有層は、前記素子形成領域の外側において前記金属酸化物層に覆われず露出した露出部を有し、前記シール部は、前記露出部と接触している、
封止デバイス。
(20)
素子形成領域に設けられた複数の素子と、
前記複数の素子を覆う第1のSi含有層と、
前記第1のSi含有層上に設けられた金属酸化物層と、
前記金属酸化物層上に設けられた第2のSi含有層と、
前記素子形成領域の外側に設けられ、有機樹脂を含むシール部と
を備え、
前記シール部は、前記素子形成領域の外側において前記第2のSi含有層と接触している、
封止デバイス。
(電子機器)
上記の実施形態およびその変形例に係る表示装置10、10A(以下「表示装置10等」という。)は、各種の電子機器に備えられてもよい。表示装置10等は、特にビデオカメラまたは一眼レフカメラの電子ビューファインダ、もしくはヘッドマウント型ディスプレイ等の高解像度が要求され、目の近くで拡大して使用されるものに適する。
図15A、図15Bは、デジタルスチルカメラ310の外観の一例を示す。このデジタルスチルカメラ310は、レンズ交換式一眼レフレックスタイプのものであり、カメラ本体部(カメラボディ)311の正面略中央に交換式の撮影レンズユニット(交換レンズ)312を有し、正面左側に撮影者が把持するためのグリップ部313を有している。
図16は、ヘッドマウントディスプレイ320の外観の一例を示す。ヘッドマウントディスプレイ320は、例えば、眼鏡形の表示部321の両側に、使用者の頭部に装着するための耳掛け部322を有している。表示部321は、上記の表示装置10等のうちいずれかを備える。
図17は、テレビジョン装置330の外観の一例を示す。このテレビジョン装置330は、例えば、フロントパネル332およびフィルターガラス333を含む映像表示画面部331を有しており、この映像表示画面部331は、上記の表示装置10等のうちいずれかを備える。
図18は、シースルーヘッドマウントディスプレイ340の外観の一例を示す。シースルーヘッドマウントディスプレイ340は、本体部341と、アーム342と、鏡筒343とを備える。
図19は、スマートフォン360の外観の一例を示す。スマートフォン360は、各種情報を表示する表示部361、およびユーザによる操作入力を受け付けるボタン等から構成される操作部362等を備える。表示部361は、上記の表示装置10等のうちいずれかを備える。
上記の表示装置10等は、乗物に備えられる各種のディスプレイに備えられてもよい。
11 回路基板
12 絶縁層
12A 開口
13、31 Si含有層
13A 露出部
14 金属酸化物層
15 カラーフィルタ
15R 赤色フィルタ部
15G 緑色フィルタ部
15B 青色フィルタ部
16 充填樹脂層
17 コンタクト部
18 シール部
19 対向基板
20 発光素子
21 第1電極
22 OLED層
23 第2電極
R1 表示領域
R2 シール領域
310 デジタルスチルカメラ
320 ヘッドマウントディスプレイ
330 テレビジョン装置
340 シースルーヘッドマウントディスプレイ
360 スマートフォン
500 乗物
Claims (20)
- 表示領域に設けられた複数の発光素子と、
前記複数の発光素子を覆うSi含有層と、
前記Si含有層上に設けられた金属酸化物層と、
前記表示領域の外側に設けられ、有機樹脂を含むシール部と
を備え、
前記Si含有層は、前記表示領域の外側において前記金属酸化物層に覆われず露出した露出部を有し、前記シール部は、前記露出部と接触している、
発光装置。 - 前記シール部は、前記露出部の上、または前記露出部と前記金属酸化物層の両方の上に設けられている、
請求項1に記載の発光装置。 - 前記露出部は、前記金属酸化物層の周縁が前記Si含有層の周縁に対して後退することにより構成されている、
請求項1に記載の発光装置。 - 前記Si含有層が、前記表示領域の外側に、前記シール部に向かって突出した突出部を有し、
前記突出部が、前記露出部を構成する、
請求項1に記載の発光装置。 - 前記突出部の先端部が、前記金属酸化物層の上面の周縁部を覆う、
請求項4に記載の発光装置。 - 前記金属酸化物層が、前記表示領域の外側に開口を有し、
前記露出部は、前記開口から前記Si含有層が露出することにより構成される、
請求項1に記載の発光装置。 - 前記Si含有層の厚さは、10μm以下であり、
前記金属酸化物層の厚さは、5nm以上200nm以下である、
請求項1に記載の発光装置。 - 前記露出部の幅は、5mm以下である、
請求項1に記載の発光装置。 - 前記Si含有層は、ケイ素(Si)および窒素(N)、またはケイ素(Si)、酸素(O)および窒素(N)を含む、
請求項1に記載の発光装置。 - 前記金属酸化物層は、単分子層により構成されている、
請求項1に記載の発光装置。 - 前記Si含有層と前記シール部との界面は、Si-O結合を含む、
請求項1に記載の発光装置。 - 前記シール部は、シランカップリング剤を含む、
請求項1に記載の発光装置。 - 前記シール部は、紫外線硬化性樹脂および熱硬化性樹脂のうちの少なくとも1種を含む、
請求項1に記載の発光装置。 - 前記シール部は、平面視において閉ループ状を有している、
請求項1に記載の発光装置。 - 表示領域に設けられた複数の発光素子と、
前記複数の発光素子を覆う第1のSi含有層と、
前記第1のSi含有層上に設けられた金属酸化物層と、
前記金属酸化物層上に設けられた第2のSi含有層と、
前記表示領域の外側に設けられ、有機樹脂を含むシール部と
を備え、
前記シール部は、前記表示領域の外側において前記第2のSi含有層と接触している、
発光装置。 - 前記第2のSi含有層は、平面視において閉ループ状を有している、
請求項15に記載の発光装置。 - 前記金属酸化物層の側面を覆う側壁部をさらに備える、
請求項15に記載の発光装置。 - 請求項1に記載の発光装置を備える電子機器。
- 素子形成領域に設けられた複数の素子と、
前記複数の素子を覆うSi含有層と、
前記Si含有層上に設けられた金属酸化物層と、
前記素子形成領域の外側に設けられ、有機樹脂を含むシール部と
を備え、
前記Si含有層は、前記素子形成領域の外側において前記金属酸化物層に覆われず露出した露出部を有し、前記シール部は、前記露出部と接触している、
封止デバイス。 - 素子形成領域に設けられた複数の素子と、
前記複数の素子を覆う第1のSi含有層と、
前記第1のSi含有層上に設けられた金属酸化物層と、
前記金属酸化物層上に設けられた第2のSi含有層と、
前記素子形成領域の外側に設けられ、有機樹脂を含むシール部と
を備え、
前記シール部は、前記素子形成領域の外側において前記第2のSi含有層と接触している、
封止デバイス。
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| DE112023003034.0T DE112023003034T5 (de) | 2022-07-12 | 2023-07-05 | Lichtemissionsvorrichtung, elektronische einrichtung und versiegelungsvorrichtung |
| KR1020257002299A KR20250034098A (ko) | 2022-07-12 | 2023-07-05 | 발광 장치, 전자 기기 및 밀봉 디바이스 |
| JP2024533672A JPWO2024014379A1 (ja) | 2022-07-12 | 2023-07-05 | |
| US18/869,173 US20250374801A1 (en) | 2022-07-12 | 2023-07-05 | Light emitting device, electronic apparatus, and sealing device |
| CN202380051949.1A CN119631602A (zh) | 2022-07-12 | 2023-07-05 | 发光装置、电子设备和密封装置 |
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2023
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- 2023-07-05 CN CN202380051949.1A patent/CN119631602A/zh active Pending
- 2023-07-05 KR KR1020257002299A patent/KR20250034098A/ko active Pending
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- 2023-07-05 DE DE112023003034.0T patent/DE112023003034T5/de active Pending
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| US20250374801A1 (en) | 2025-12-04 |
| JPWO2024014379A1 (ja) | 2024-01-18 |
| KR20250034098A (ko) | 2025-03-10 |
| DE112023003034T5 (de) | 2025-09-25 |
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