WO2019216198A1 - 表示装置、表示装置の製造方法、及び、電子機器 - Google Patents
表示装置、表示装置の製造方法、及び、電子機器 Download PDFInfo
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- WO2019216198A1 WO2019216198A1 PCT/JP2019/017184 JP2019017184W WO2019216198A1 WO 2019216198 A1 WO2019216198 A1 WO 2019216198A1 JP 2019017184 W JP2019017184 W JP 2019017184W WO 2019216198 A1 WO2019216198 A1 WO 2019216198A1
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- 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
- H10K59/12—Active-matrix OLED [AMOLED] displays
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- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
- H10K59/124—Insulating layers formed between TFT elements and OLED 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
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- H05B33/00—Electroluminescent light sources
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- H05B33/00—Electroluminescent light sources
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- H05B33/00—Electroluminescent light sources
- H05B33/12—Light sources with substantially two-dimensional radiating surfaces
- H05B33/22—Light sources with substantially two-dimensional radiating surfaces characterised by the chemical or physical composition or the arrangement of auxiliary dielectric or reflective layers
- H05B33/24—Light sources with substantially two-dimensional radiating surfaces characterised by the chemical or physical composition or the arrangement of auxiliary dielectric or reflective layers of metallic reflective layers
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- H10K50/81—Anodes
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- H10K50/852—Arrangements for extracting light from the devices comprising a resonant cavity structure, e.g. Bragg reflector pair
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- H10K59/12—Active-matrix OLED [AMOLED] displays
- H10K59/1201—Manufacture or treatment
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- H10K59/30—Devices specially adapted for multicolour light emission
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- H10K59/805—Electrodes
- H10K59/8051—Anodes
- H10K59/80518—Reflective anodes, e.g. ITO combined with thick metallic layers
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- H10K59/875—Arrangements for extracting light from the devices
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- H10K2102/00—Constructional details relating to the organic devices covered by this subclass
- H10K2102/301—Details of OLEDs
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- H10K50/00—Organic light-emitting devices
- H10K50/10—OLEDs or polymer light-emitting diodes [PLED]
- H10K50/11—OLEDs or polymer light-emitting diodes [PLED] characterised by the electroluminescent [EL] layers
- H10K50/125—OLEDs or polymer light-emitting diodes [PLED] characterised by the electroluminescent [EL] layers specially adapted for multicolour light emission, e.g. for emitting white light
- H10K50/13—OLEDs or polymer light-emitting diodes [PLED] characterised by the electroluminescent [EL] layers specially adapted for multicolour light emission, e.g. for emitting white light comprising stacked EL layers within one EL unit
- H10K50/131—OLEDs or polymer light-emitting diodes [PLED] characterised by the electroluminescent [EL] layers specially adapted for multicolour light emission, e.g. for emitting white light comprising stacked EL layers within one EL unit with spacer layers between the electroluminescent layers
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- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/30—Devices specially adapted for multicolour light emission
- H10K59/38—Devices specially adapted for multicolour light emission comprising colour filters or colour changing media [CCM]
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- H10K59/80—Constructional details
- H10K59/875—Arrangements for extracting light from the devices
- H10K59/876—Arrangements for extracting light from the devices comprising a resonant cavity structure, e.g. Bragg reflector pair
Definitions
- the present disclosure relates to a display device, a method for manufacturing the display device, and an electronic device.
- organic EL display devices using electroluminescence (EL) of organic materials have attracted attention as display devices that can replace liquid crystal display devices.
- the organic EL display device is being applied not only to a direct-view display such as a monitor but also to an ultra-small display that requires a fine pixel pitch of about several microns.
- the organic EL display device as a method for realizing color display, for example, there is a method in which a plurality of colors of organic EL material layers such as red light emission, green light emission, and blue light emission are formed for each pixel using a mask. This method is often used in a direct-view type organic EL display device.
- a white light emitting organic EL material layer is formed in common for all pixels and a color filter is arranged for each pixel.
- the finer the pixel pitch the more difficult it is to form an organic EL material layer for each pixel using a mask in terms of alignment accuracy. Therefore, in an organic EL display device having a fine pixel pitch of about several microns, a method of combining a color filter by forming a white light emitting organic EL material layer in common for all pixels is preferable.
- an object of the present disclosure is to provide a display device having a structure capable of setting the positional relationship between the organic layer and the reflective film with high accuracy, an electronic apparatus including the display device, and a method for manufacturing the display device. It is to provide.
- a display device includes: A display device in which pixels having a light emitting portion formed by laminating a first electrode, an organic layer, and a second electrode are formed on a circuit board in a two-dimensional matrix, The first electrode is provided for each light emitting part, and a partition part is formed between adjacent first electrodes, The organic layer and the second electrode are laminated on the entire surface including the first electrode and the partition wall, The first electrode is formed on the interlayer insulating film, On the lower side of the first electrode, a reflective film having a light reflecting surface provided on the same plane as a boundary surface in contact with different insulating materials in the interlayer insulating film is formed. It is a display device.
- a method for manufacturing a display device for achieving the above-described object is as follows.
- a method of manufacturing a display device in which pixels having a light emitting portion formed by laminating a first electrode, an organic layer, and a second electrode are formed on a circuit board in a two-dimensional matrix, Forming an interlayer insulating film formed on the substrate so that layers made of different types of insulating materials are in contact with each other; Forming an opening in the region of the interlayer insulating film corresponding to the first electrode so that the same surface of the boundary surface where the different insulating material contacts in the interlayer insulating film is exposed at the bottom; Embedding a reflective film in the opening; Bonding the surface embedded with the reflective film to the circuit board, and then removing the board; Forming a light emitting part formed by laminating a first electrode, an organic layer and a second electrode on the interlayer insulating film; Having It is a manufacturing method of a display device.
- an electronic device including a display device in which pixels having a light emitting portion formed by laminating a first electrode, an organic layer, and a second electrode are arranged on a circuit board in a two-dimensional matrix.
- the first electrode is provided for each light emitting part, and a partition part is formed between adjacent first electrodes,
- the organic layer and the second electrode are laminated on the entire surface including the first electrode and the partition wall,
- the first electrode is formed on the interlayer insulating film, On the lower side of the first electrode, a reflective film having a light reflecting surface provided on the same plane as a boundary surface in contact with different insulating materials in the interlayer insulating film is formed. It is an electronic device.
- FIG. 1 is a schematic plan view of a display device according to the first embodiment of the present disclosure.
- FIG. 2 is a schematic partial cross-sectional view of the display device according to the first embodiment.
- 3A and 3B are schematic partial end views for explaining the manufacturing method of the display device according to the first embodiment.
- 4A and 4B are schematic partial end views for explaining the manufacturing method of the display device according to the first embodiment, following FIG. 3B.
- FIG. 5 is a schematic partial end view for explaining the manufacturing method of the display device according to the first embodiment, following FIG. 4B.
- FIG. 6 is a schematic partial end view for explaining the manufacturing method of the display device according to the first embodiment, following FIG. 5.
- FIG. 7 is a schematic partial end view for explaining the manufacturing method of the display device according to the first embodiment, following FIG. 6.
- FIG. 8 is a schematic partial end view for explaining the manufacturing method of the display device according to the first embodiment, following FIG. 7.
- FIG. 9 is a schematic partial end view for explaining the manufacturing method of the display device according to the first embodiment, following FIG. 8.
- FIG. 10 is a schematic partial end view for explaining the manufacturing method of the display device according to the first embodiment, following FIG. 9.
- FIG. 11 is a schematic partial end view for explaining the manufacturing method of the display device according to the first embodiment, following FIG. 10.
- FIG. 12 is a schematic partial end view for explaining the manufacturing method of the display device according to the first embodiment, following FIG.
- FIG. 13 is a schematic partial cross-sectional view of a display device according to the second embodiment.
- FIG. 14B are schematic partial end views for explaining the manufacturing method of the display device according to the second embodiment.
- 15A and 15B are schematic partial end views for explaining the manufacturing method of the display device according to the second embodiment, following FIG. 14B.
- FIG. 16 is a schematic partial end view for explaining the manufacturing method of the display device according to the second embodiment, following FIG. 15B.
- FIG. 17 is a schematic partial end view for explaining the manufacturing method of the display device according to the second embodiment, following FIG.
- FIG. 18 is a schematic partial end view for explaining the manufacturing method of the display device according to the second embodiment, following FIG.
- FIG. 19 is a schematic partial end view for explaining the manufacturing method of the display device according to the second embodiment, following FIG. FIG.
- FIG. 20 is a schematic partial end view for explaining the manufacturing method of the display device according to the second embodiment, following FIG. FIG. 21 is a schematic partial end view for explaining the manufacturing method of the display device according to the second embodiment, following FIG. FIG. 22 is a schematic partial end view for explaining the manufacturing method of the display device according to the second embodiment, following FIG. FIG. 23 is a schematic partial end view for explaining the manufacturing method of the display device according to the second embodiment, following FIG. FIG. 24 is a schematic partial end view for explaining the manufacturing method of the display device according to the second embodiment, following FIG. FIG. 25 is a schematic partial cross-sectional view of a display device according to the third embodiment.
- FIG. 26A and FIG. 26B are schematic partial end views for explaining the manufacturing method of the display device according to the third embodiment.
- FIG. 27 is a schematic partial end view for explaining the manufacturing method of the display device according to the third embodiment, following FIG. 26B.
- FIG. 28 is a schematic partial end view for explaining the manufacturing method of the display device according to the third embodiment, following FIG.
- FIG. 29 is a schematic partial end view for explaining the manufacturing method of the display device according to the third embodiment, following FIG.
- FIG. 30 is a schematic partial end view for explaining the manufacturing method of the display device according to the third embodiment, following FIG.
- FIG. 31 is a schematic partial end view for explaining the manufacturing method of the display device according to the third embodiment, following FIG. 30.
- FIG. 32 is a schematic partial end view for explaining the manufacturing method of the display device according to the third embodiment, following FIG. 31.
- FIG. 31 is a schematic partial end view for explaining the manufacturing method of the display device according to the third embodiment, following FIG. 31.
- FIG. 33 is a schematic partial end view for explaining the manufacturing method of the display device according to the third embodiment, following FIG. 32.
- FIG. 34 is a schematic partial end view for explaining the manufacturing method of the display device according to the third embodiment, following FIG.
- FIG. 35 is a schematic partial end view for explaining the resonator structure of the display device according to the third embodiment.
- FIG. 36 is an external view of an interchangeable lens single-lens reflex digital still camera.
- FIG. 36A shows a front view thereof
- FIG. 34B shows a rear view thereof.
- FIG. 37 is an external view of a head mounted display.
- FIG. 38 is an external view of a see-through head mounted display.
- the interlayer insulating film may be formed by stacking a plurality of layers so that different kinds of insulating materials are in contact with each other.
- the interlayer insulating film can be formed of an inorganic insulating material such as silicon oxide (SiO x ), silicon nitride (SiN x ), or silicon oxynitride (SiO x N y ).
- the interlayer insulating film may be configured to include at least two kinds of layers of a layer made of silicon oxide, a layer made of silicon nitride, and a layer made of silicon oxynitride.
- the interlayer insulating film may be configured by alternately stacking two types of layers.
- the number of interlayer insulating films positioned between the reflective film and the first electrode is configured to be different depending on the display color of the pixel. Can do.
- the reflective film may be embedded in an opening provided in the interlayer insulating film.
- This configuration has an advantage that the reflectance is not reduced due to oxidation of the material constituting the reflective film because the light reflecting surface is not exposed to the outside.
- the opening can be formed, for example, by performing an etching process so that a boundary surface where different insulating materials are in contact with each other in the interlayer insulating film serves as a stopper.
- a combination of a material constituting the interlayer insulating film and an etchant may be selected as appropriate, and processing may be performed so that a certain insulating material acts as a stopper.
- the reflective film includes silver (Ag), a silver alloy, aluminum (Al), an aluminum alloy, platinum (Pt), gold (Au), chromium (Cr), tungsten ( It is possible to employ a configuration made of a metal material such as W).
- the reflective film is preferably made of silver or a silver alloy. If the reduction in reflectance due to oxidation is sufficiently suppressed, the reflective film made of silver exhibits a reflectance of approximately 90% or more in the visible light region.
- the thickness of the reflective film is preferably set in the range of 100 to 300 nanometers.
- the reflection film can be configured by an upper layer portion made of silver or a silver alloy and a lower layer portion made of copper or a copper alloy.
- the electrode is often made of copper or a copper alloy.
- the bondability between the circuit board side and the reflective film side can be improved.
- the circuit board includes a drive circuit for driving the pixels, and the first electrode and the drive circuit can be electrically connected.
- the first electrode and the drive circuit may be directly connected via a conductive portion made of a via or the like provided in the interlayer insulating film.
- the first electrode and the drive circuit may be electrically connected via a reflective film.
- the light emitting unit may be a so-called top emission type.
- the light emitting part is configured by sandwiching an organic layer including a hole transport layer, a light emitting layer, an electron transport layer, and the like between the first electrode and the second electrode.
- the cathode is shared, the second electrode is a cathode electrode and the first electrode is an anode electrode.
- the display device of the present disclosure including the above-described preferable configuration can be configured as a color display.
- the color filter can be formed using, for example, a resin material containing a pigment or a dye.
- a so-called monochrome display configuration may be used.
- one pixel includes a plurality of sub-pixels. Specifically, one pixel includes a red display sub-pixel, a green display sub-pixel, and a blue display sub-pixel. A configuration including two sub-pixels can be adopted. Furthermore, a set of these three types of sub-pixels plus one or more types of sub-pixels (for example, a set of sub-pixels that emit white light to improve brightness, a color reproduction range) A set of sub-pixels that emit complementary colors for enlargement, a set of sub-pixels that emit yellow for expanding the color reproduction range, and yellow and cyan for expanding the color reproduction range It can also be composed of a set of subpixels).
- VGA 640, 480
- S-VGA 800, 600
- XGA 1024, 768
- APRC 1152, 900
- S-XGA 1280, 1024
- U-XGA 1600,1200
- HD-TV (1920,1080)
- Q-XGA (2048,1536), (1920,1035), (720,480), (1280,960), etc.
- the present invention is not limited to these values.
- the partition wall portion can be formed using a material appropriately selected from known inorganic materials and organic materials.
- a physical vapor deposition method PVD method
- a vacuum deposition method or a sputtering method It can be formed by a combination of a known film formation method such as a chemical vapor deposition method (CVD method) and a known patterning method such as an etching method or a lift-off method.
- CVD method chemical vapor deposition method
- a known patterning method such as an etching method or a lift-off method.
- the configuration of the drive circuit that controls the light emission of the light emitting unit is not particularly limited.
- the light emitting unit may be formed in a certain plane on the circuit board and may be disposed above a drive circuit that drives the light emitting unit via an interlayer insulating layer, for example.
- the configuration of the transistors constituting the drive circuit It may be a p-channel field effect transistor or an n-channel field effect transistor.
- a semiconductor material, a glass material, or a plastic material can be exemplified.
- the drive circuit is constituted by a transistor formed on a semiconductor substrate
- a well region may be provided in a semiconductor substrate made of silicon and a transistor may be formed in the well.
- the driving circuit is constituted by a thin film transistor or the like
- a driving circuit can be formed by forming a semiconductor thin film on a substrate made of a glass material or a plastic material.
- Various wirings can have known configurations and structures.
- the first electrode is provided for each light emitting unit on the circuit board.
- the first electrode functions as an anode electrode of the light emitting unit.
- the first electrode can be formed of a transparent conductive material such as indium zinc oxide or indium tin oxide, for example. Alternatively, it can be formed using a metal, an alloy, or the like so as to be thin enough to have optical transparency.
- the organic layer includes an organic light emitting material and is provided on the first electrode and the partition as a common continuous film.
- the organic layer emits light when a voltage is applied between the first electrode and the second electrode.
- the organic layer can be configured, for example, by a structure in which a hole injection layer, a hole transport layer, a light emitting layer, an electron transport layer, and an electron injection layer are sequentially stacked from the first electrode side.
- the hole transport material, hole transport material, electron transport material, and organic light emitting material constituting the organic layer are not particularly limited, and well-known materials can be used.
- the organic layer may have a so-called tandem structure in which a plurality of light emitting layers are connected via a charge generation layer or an intermediate electrode.
- a light emitting unit that emits white light can be configured by stacking red, green, and blue light emitting layers, or by stacking yellow and blue light emitting layers.
- the second electrode is provided as a common continuous film on the organic layer.
- the second electrode is preferably made of a material having good light transmittance and a small work function.
- it can be formed using a transparent conductive material such as indium tin oxide (ITO), indium zinc oxide (IZO), zinc oxide, aluminum-doped zinc oxide, or gallium-doped zinc oxide.
- ITO indium tin oxide
- IZO indium zinc oxide
- zinc oxide aluminum-doped zinc oxide
- gallium-doped zinc oxide gallium-doped zinc oxide.
- magnesium (Mg), silver (Ag), or an alloy thereof can be used so as to be thin enough to have optical transparency.
- the thickness of the second electrode is preferably set in the range of about 3 to 15 nanometers. In some cases, the second electrode may be formed of a multilayer film.
- the first layer is formed of calcium (Ca), barium (Ba), lithium (Li), cesium (Cs), indium (In), magnesium (Mg), silver (Ag), etc.
- the second layer is magnesium. You may form from (Mg), silver (Ag), or those alloys.
- FIG. 2 described later shows a cross-sectional structure of the display device, but does not show the ratio of width, height, thickness and the like.
- the first embodiment relates to a display device, a method for manufacturing the display device, and an electronic apparatus according to the first aspect of the present disclosure.
- FIG. 1 is a schematic plan view of a display device according to a first embodiment of the present disclosure.
- a pixel 10 including a light emitting unit ELP and a driving circuit that drives the light emitting unit ELP extends in a scanning line SCL extending in a row direction (X direction in FIG. 1) and in a column direction (Y direction in FIG. 1).
- a data driver 102 for supplying a signal voltage to the data line DTL.
- FIG. 1 shows the connection relationship for one pixel 10, more specifically, the (q, p) th pixel 10 described later.
- the display device 1 further includes a common power supply line PS2 connected to all the pixels 10 in common.
- a predetermined drive voltage is supplied from the power supply unit 100 to the power supply line PS1, and a common voltage (for example, ground potential) is supplied to the common power supply line PS2.
- Q pixels in the row direction, P pixels in the column direction, and a total of Q ⁇ P pixels (display elements) 10 are arranged in a two-dimensional matrix.
- the number of rows of pixels 10 in the display area is P, and the number of pixels 10 constituting each row is Q.
- the number of scanning lines SCL and feeder lines PS1 is P.
- the number of data lines DTL is Q.
- the display device 1 is, for example, a color display device.
- One pixel 10 constitutes one subpixel.
- the display device 1 is line-sequentially scanned in units of rows by the scanning signal from the scanning unit 101.
- the pixel 10 located in the p-th row and the q-th column is hereinafter referred to as a (q, p) -th pixel 10 or a (q, p) -th pixel 10.
- Q pixels 10 arranged in the p-th row are driven simultaneously.
- the light emission / non-light emission timing is controlled in units of rows to which they belong.
- FR times / second
- a scanning period (so-called horizontal scanning period) per row when the display device 1 is line-sequentially scanned in units of rows is (1 / FR).
- the pixel 10 includes a light emitting unit ELP and a drive circuit that drives the light emitting unit ELP.
- the light emitting part ELP is composed of an organic electroluminescence light emitting part.
- the drive circuit includes a write transistor TR W , a drive transistor TR D , and a capacitor C 1 . When a current flows through the light emitting section ELP through the driving transistor TR D, the light emitting section ELP emits light.
- Each transistor is composed of a p-channel field effect transistor.
- one source / drain region of the driving transistor TR D is connected to one end of the capacitor C 1 and the feeder line PS1, the other source / drain region, one end of the light emitting portion ELP (specifically Is connected to an anode electrode).
- the gate electrode of the drive transistor TR D is connected to the other source / drain region of the write transistor TR W and is connected to the other end of the capacitor C 1 .
- the write transistor TR W one of the source / drain regions is connected to the data line DTL, the gate electrode is connected to the scan line SCL.
- the other end (specifically, the cathode electrode) of the light emitting unit ELP is connected to the common power supply line PS2.
- a predetermined cathode voltage V Cat is supplied to the common power supply line PS2.
- the capacitance of the light emitting unit ELP is represented by the symbol C EL .
- the configuration of the drive circuit that controls the light emission of the pixel 10 is not particularly limited. Therefore, the configuration shown in FIG. 1 is merely an example, and the display device according to the present embodiment can have various configurations.
- FIG. 2 is a schematic partial cross-sectional view of the display device according to the first embodiment.
- the light emitting unit ELP is configured by laminating a first electrode 41, an organic layer 60, and a second electrode 70.
- the first electrode 41 is provided for each light emitting portion ELP, and a partition wall portion 51 is formed between adjacent first electrodes 41.
- the organic layer 60 and the second electrode 70 are laminated on the entire surface including the first electrode 41 and the partition wall 51.
- a protective film 80 is provided on the entire surface including the second electrode 70, and a color filter 90 is disposed thereon.
- Reference numeral 91 denotes a light shielding area portion
- reference numeral 92 denotes a filter area portion.
- the first electrode 41 is formed on the interlayer insulating film 30.
- a reflective film 31 having a light reflecting surface provided on the same plane as the boundary surface where different insulating materials are in contact with each other in the interlayer insulating film 30 is formed.
- the film thickness of the interlayer insulating film 30 positioned between the reflective film 31 and the first electrode 41 is set so that light in a wide wavelength band from blue to red can be extracted from the pixel.
- the circuit board 20 includes a base material 21, a gate electrode 22. Formed on the gate insulating film 23 formed so as to cover the entire surface including the gate electrode 22, the semiconductor material layer 24, the planarization film 25 formed so as to cover the entire surface including the semiconductor material layer 24, and the semiconductor material layer 24.
- a source / drain electrode 26 connected to the source / drain region of the transistor formed, a planarization film 27 formed so as to cover the entire surface including the source / drain electrode 26, and an opening of the planarization film 27.
- a contact plug 28 is connected to the source / drain electrode 26 of the driving transistor.
- the circuit board 20 includes a drive circuit configured to include the above-described transistors and the like for driving the pixels 10.
- the first electrode 41 and the drive circuit are electrically connected. More specifically, the first electrode 41 is connected to the source / drain electrode 26 of the transistor formed in the semiconductor material layer 24 via the conduction portion 33 connected to the contact plug 28.
- the base material 21 can be made of, for example, a glass material, a semiconductor material, or a plastic material.
- a driving circuit including a thin film transistor that controls light emission of the light emitting unit ELP is formed on the base material 21.
- the gate electrodes 22 of various transistors constituting the drive circuit can be formed using, for example, a metal such as aluminum (Al), polysilicon, or the like.
- the gate insulating film 23 is provided on the entire surface of the base material 21 so as to cover the gate electrode 22.
- the gate insulating film 23 can be formed using, for example, silicon oxide (SiO x ), silicon nitride (SiN x ), or the like.
- the semiconductor material layer 24 can be formed on the gate insulating film 23 using, for example, amorphous silicon, polycrystalline silicon, or an oxide semiconductor. Further, a part of the semiconductor material layer 24 is doped with impurities to form source / drain regions. Further, the region of the semiconductor material layer 24 located between one source / drain region and the other source / drain region and above the gate electrode 22 forms a channel region. Thus, a bottom gate type thin film transistor is provided on the substrate 21. In FIG. 2, the source / drain region and the channel region are not shown.
- the planarizing film 25 is provided on the semiconductor material layer 24.
- the planarizing film 25 is made of, for example, silicon oxide (SiO x ), silicon nitride (SiN x ), or silicon oxynitride (SiO x N y ).
- the source / drain electrode 26 is connected to the semiconductor material layer 24 through a contact hole provided in the planarizing film 25.
- the source / drain electrode 26 is made of a metal such as aluminum (Al), for example.
- the planarization film 27 is formed to cover and planarize the drive circuit and the like.
- the planarizing film 27 is, for example, an organic insulating film such as polyimide resin, acrylic resin, or novolac resin, silicon oxide (SiO x ), silicon nitride (SiN x ), or silicon oxynitride (Si x N y) can be formed using an inorganic insulating film such.
- the contact plug 28 is made of, for example, a metal material such as copper (Cu) or a copper alloy, and is formed in an opening provided in the planarizing film 27.
- the first electrode 41 and the contact plug 28 are electrically connected by a conduction portion 33 formed in an opening provided in an interlayer insulating film 30 described later.
- the interlayer insulating film 30 is formed by stacking a plurality of layers so that different kinds of insulating materials are in contact with each other.
- the interlayer insulating film 30 is formed by laminating a first layer 30A, a second layer 30B, and a third layer 30C.
- the interlayer insulating film 30 can be formed of an inorganic insulating material or the like.
- the interlayer insulating film 30 can be configured to include, for example, at least two of a layer made of silicon oxide, a layer made of silicon nitride, and a layer made of silicon oxynitride, Two types of layers may be alternately stacked. In the following description, it is assumed that the interlayer insulating film 30 is composed of a layer made of silicon oxide and a layer made of silicon nitride.
- the reflection film 31 is disposed below the first electrode 41 and is formed to have a light reflection surface provided on the same plane as the boundary surface in contact with a different insulating material in the interlayer insulating film 30. More specifically, the light reflection surface of the reflection film 31 is formed so as to be flush with the boundary surface between the first layer 30A and the second layer 30B in the interlayer insulating film 30.
- the reflective film 31 is embedded in an opening provided in the interlayer insulating film 30.
- the reflective film 31 is made of a metal material.
- Reference numeral 32 denotes a filling member that fills the opening on the circuit board 20 side of the reflective film 31.
- the filling member 32 is formed using the same material as that of the planarization film 27 from the viewpoint of the bonding property with the circuit board 20.
- the reflective film 31 is embedded in an opening provided in the interlayer insulating film 30 using the first layer 30A as a stopper film.
- the position of the light reflecting surface of the reflective film 31 is defined by the thickness of the layers constituting the interlayer insulating film 30.
- the film thickness of the layer constituting the interlayer insulating film 30 and the organic layer 60 can be controlled with high accuracy by a film forming process.
- the dimension between the light reflecting surface of the reflective film 31 and the second electrode 70 portion indicated by an arrow in FIG. 2 can be set with high accuracy.
- the first electrode 41 is formed on the interlayer insulating film 30.
- the first electrode 41 is made of a transparent conductive material such as ITO, for example.
- the thickness of the first electrode 41 is preferably set in the range of 20 to 200 nanometers.
- the organic layer 60 is formed on the entire surface including the first electrode 41 and the partition wall 51.
- the organic layer 60 is a white light-emitting functional layer that emits white light.
- a hole injection layer, a hole transport layer, a blue light emitting layer, an electron transport layer, a charge generation layer, a hole injection layer, a hole transport layer, a yellow light emitting layer, and an electron transport layer are sequentially stacked from the lower layer. It can also be a structure.
- the organic layer 60 has a multilayer structure, but is shown as a single layer in the figure.
- the second electrode 70 is formed on the entire surface including the organic layer 60.
- the 2nd electrode 70 is comprised from the material with favorable light transmittance and a small work function.
- the second electrode 70 will be described as being made of ITO.
- the protective film 80 is formed on the entire surface including the second electrode 70.
- the protective film 80 is for preventing moisture from entering the organic layer 60, and is formed with a thickness of about 1 to 8 micrometers using a material having low water permeability.
- silicon nitride (SiN x ), silicon oxide (SiO x ), aluminum oxide (AlO x ), titanium oxide (TiO x ), or a combination thereof is used as a material of the protective film 80.
- the color filter 90 is formed, for example, on the counter substrate (not shown), and is bonded onto the protective film 80 using an ultraviolet curable resin or a thermosetting resin. By the color filter 90, the light generated in the light emitting unit ELP is color-divided and extracted.
- the display device 1 can be manufactured as follows.
- the manufacturing method of the display device 1 is as follows: Forming an interlayer insulating film formed on the substrate so that layers made of different types of insulating materials are in contact with each other; Forming an opening in the region of the interlayer insulating film corresponding to the first electrode so that the same surface of the boundary surface where the different insulating material contacts in the interlayer insulating film is exposed at the bottom; Embedding a reflective film in the opening; Bonding the surface embedded with the reflective film to the circuit board, and then removing the board; Forming a light emitting part formed by laminating a first electrode, an organic layer and a second electrode on the interlayer insulating film; Have The same applies to other embodiments described later.
- 3 to 12 are schematic partial end views for explaining the manufacturing method of the display device according to the first embodiment.
- Step-100 (see FIG. 3A) First, a circuit board 20 on which a drive circuit is formed is prepared. A substrate 21 is prepared, and a drive circuit including a thin film transistor is formed on the substrate 21 through a predetermined film formation and patterning process. Subsequently, a planarizing film 27 is formed on the entire surface of the drive circuit by a spin coating method, a slit coating method, a sputtering method, a CVD method, or the like. Next, after forming an opening in the planarizing film 27, a contact plug 28 is formed in the opening, whereby the circuit board 20 shown in FIG. 3A can be obtained.
- the interlayer insulating film 30 on which the reflective film 31 is formed is disposed on the circuit board 20 according to the procedure shown in FIGS. 3B to 7.
- Step-110 A substrate 39 made of a silicon wafer is prepared, and an interlayer insulating film 30 is formed on the substrate 39 by alternately stacking two types of layers, for example, a layer made of silicon oxide and a layer made of silicon nitride (FIG. 3B). reference).
- the first layer 30A and the third layer 30C are layers made of silicon oxide
- the second layer 30B is a layer made of silicon nitride.
- an opening OP31 is formed in a portion corresponding to the reflective film 31 in the interlayer insulating film 30 so that the boundary surface between the first layer 30A and the second layer 30B is exposed on the bottom surface (see FIG. 4A).
- the opening OP31 can be formed by performing dry etching under conditions such that the first layer 30A acts as a stopper film.
- an opening OP33 is formed in the portion of the interlayer insulating film 30 corresponding to the conduction portion 33 so as to penetrate the interlayer insulating film 30.
- the opening OP33 can be formed by performing dry etching under the condition that the substrate 39 acts as a stopper.
- Step-130 (see FIG. 4B) Thereafter, the reflective film 31 and the like are formed in the opening OP31, and the conduction portion 33 is formed in the opening OP33.
- a silver thin film is formed on the entire surface including the opening by sputtering, and then a filling member 32 that fills the opening of the reflective film 31 is formed.
- planarization is performed using, for example, CMP.
- Step-140 (See FIGS. 5, 6, and 7) Subsequently, the interlayer insulating film 30 and the circuit board 20 are opposed to each other (see FIG. 5), and the interlayer insulating film 30 and the circuit board 20 are bonded.
- the surface of the interlayer insulating film 30 and the circuit substrate 20 is activated by removing the inactive layer on the surface by irradiating energy waves such as plasma and accelerated ion beam under ultra high vacuum.
- the interlayer insulating film 30 and the circuit board 20 can be bonded by atomic force (see FIG. 6).
- the substrate 39 is removed (see FIG. 7).
- the light emitting portion ELP and the like are formed on the interlayer insulating film 30 by the procedure shown in FIGS.
- the first electrode 41 is formed on the interlayer insulating film 30.
- the first electrode 41 can be obtained by forming an ITO film on the interlayer insulating film 30 and then patterning the ITO film.
- a partition wall 51 as an inter-pixel insulating film is formed between the first electrode 41 and the first electrode 41.
- An inorganic insulating film such as silicon oxynitride is formed on the entire surface including the first electrode 41 by sputtering or CVD.
- the partition wall 51 can be formed by patterning the pixel opening so that the formed inorganic insulating film has a predetermined concave structure by lithography and dry etching.
- Step-170 (see FIG. 10)
- a hole injection layer, a hole transport layer, a red light-emitting layer, a light-emitting separation layer, a blue light-emitting layer, a green light-emitting layer, and an electron transport layer are sequentially formed on the entire surface including the first electrode 41 serving as the anode electrode.
- the organic layer 60 that emits white light is formed.
- a second electrode 70 to be a cathode electrode is formed on the entire surface of the organic layer 60.
- the second electrode 70 can be obtained by forming a film made of a silver magnesium alloy over the entire surface by vapor deposition (see FIG. 11). Then, after forming the protective film 80 on the entire surface, the counter substrate on which the color filter 90 is formed is bonded to the display device 1 (see FIG. 12).
- the distance between the light reflecting surface of the reflective film 31 and the second electrode 70 is defined by the thickness of the organic layer 60, the first electrode 41, and the first layer 30 ⁇ / b> A of the interlayer insulating film 30. These can control the film thickness with high accuracy in the process of forming them. Therefore, since the positional relationship between the organic layer and the reflective film can be set with high accuracy, color variations and the like can be suppressed.
- the light reflecting surface of the reflecting film 31 is formed by embedding a metal material in the interlayer insulating film 30. Therefore, the light reflecting surface does not touch the outside air. For this reason, a material such as silver or a silver alloy that has high reflectivity but is easily oxidized can be used as a material for forming the reflective film 31 without any problem.
- a metal material may be embedded after a thin film made of a transparent conductive material such as ITO is formed in the opening provided in the interlayer insulating film 30.
- the second embodiment is a modification of the first embodiment.
- the first electrode 41 is connected to the drive circuit that drives the pixel 10 through the conducting portion 33 connected to the contact plug 28.
- the second embodiment is mainly different in that the first electrode and the drive circuit are electrically connected via a reflective film.
- FIG. 13 is a schematic partial cross-sectional view of the display device according to the second embodiment. In addition, what is necessary is just to read the display apparatus 1 for the display apparatus 2 in FIG.
- the shape and configuration of the contact plug 228, the reflective film 231, the filling member 232, and the conductive portion 233 are different from those of the display device 1.
- the surface on the reflective film 231 side is formed in a shape that covers the reflective film 231.
- the reflective film 231 is connected to the source / drain electrode 26 of the driving transistor through the contact plug 228.
- the reflective film 231 is disposed below the first electrode 41 and is formed so as to have a light reflective surface provided on the same plane as the boundary surface in contact with a different insulating material in the interlayer insulating film 30. Similar to the first embodiment, the light reflecting surface of the reflecting film 231 is formed so as to be flush with the interface between the first layer 30A and the second layer 30B in the interlayer insulating film 30.
- the reflective film 231 is embedded in an opening provided in the interlayer insulating film 30.
- Reference numeral 232 denotes a filling member that fills the opening on the circuit board 20 side of the reflective film 231.
- the filling member 232 is formed using the same material as that of the contact plug 228 from the viewpoint of bondability with the circuit board 20. Accordingly, the filling member 232 substantially forms the lower layer portion of the reflective film.
- the reflective film is composed of an upper layer portion made of silver or a silver alloy and a lower layer portion made of copper or a copper alloy.
- the reflective film 231 and the contact plug 228 are electrically connected.
- the first electrode 41 and the reflective film 231 are electrically connected by a conduction portion 233 formed in an opening provided in the interlayer insulating film 30.
- the first electrode 41 and the drive circuit are electrically connected via the reflective film 231.
- the detailed structure of the display device 2 has been described above.
- the display device 2 can be manufactured as follows.
- FIG. 14 to FIG. 24 are schematic partial end views for explaining the manufacturing method of the display device according to the second embodiment.
- Step-200 (see FIG. 14A) First, a circuit board 220 on which a drive circuit is formed is prepared. A substrate 21 is prepared, and a drive circuit including a thin film transistor is formed on the substrate 21 through a predetermined film formation and patterning process. Subsequently, a planarizing film 27 is formed on the entire surface of the drive circuit by a spin coating method, a slit coating method, a sputtering method, a CVD method, or the like. Next, after forming an opening in the planarizing film 27, a contact plug 228 is formed in the opening, whereby the circuit board 220 shown in FIG. 14A can be obtained.
- the interlayer insulating film 30 on which the reflective film 231 is formed is disposed on the circuit board 220 by the procedure shown in FIGS. 14B to 18.
- Step-210 A substrate 39 made of a silicon wafer is prepared, and an interlayer insulating film 30 is formed on the substrate 39 by alternately stacking two types of layers, for example, a layer made of silicon oxide and a layer made of silicon nitride (FIG. 14B). reference). Since the composition of the interlayer insulating film 30 is the same as that described in [Step-110], the description thereof is omitted.
- an opening OP231 is formed in the portion of the interlayer insulating film 30 corresponding to the reflective film 231 so that the boundary surface between the first layer 30A and the second layer 30B is exposed on the bottom surface (see FIG. 15A).
- the opening OP231 can be formed by performing dry etching under conditions such that the first layer 30A acts as a stopper film.
- a reflective film 231 and the like are formed in the opening OP231.
- a silver thin film is formed on the entire surface including the opening OP231 by sputtering, and then a filling member 232 that fills the opening of the reflective film 231 is formed, and then planarization is performed using, for example, CMP.
- Step-240 (See FIGS. 16, 17, and 18) Subsequently, the interlayer insulating film 30 and the circuit board 220 are opposed to each other (see FIG. 16), and the interlayer insulating film 30 and the circuit board 220 are bonded.
- the surface of the interlayer insulating film 30 and the circuit substrate 220 is activated by removing the inactive layer on the surface by irradiating with an energy wave such as plasma or accelerated ion beam under ultra high vacuum.
- an energy wave such as plasma or accelerated ion beam under ultra high vacuum.
- the interlayer insulating film 30 and the circuit board 220 can be bonded by atomic force (see FIG. 17).
- the substrate 39 is removed (see FIG. 18).
- an opening OP233 is formed in a portion corresponding to the conductive portion 233 in the interlayer insulating film 30.
- the opening OP233 can be formed by performing dry etching under conditions such that the reflective film 231 acts as a stopper (see FIG. 19).
- the conductive portion 233 is formed in the opening OP233.
- the conductive portion 233 can be formed by forming a conductive film over the entire surface and then performing planarization using, for example, a CMP method (see FIG. 20).
- the light emitting portion ELP and the like are formed on the interlayer insulating film 30 by the procedure shown in FIGS.
- the first electrode 41 is formed on the interlayer insulating film 30.
- the first electrode 41 can be obtained by forming an ITO film on the interlayer insulating film 30 and then patterning the ITO film.
- the first electrode 41 and the reflective film 231 are electrically connected via the conduction part 233.
- Step-270 (see FIG. 22) Next, a partition wall 51 as an inter-pixel insulating film is formed between the first electrode 41 and the first electrode 41. Since the content is the same as that described in [Step-160], the description is omitted.
- Step-280 (see FIG. 23) Next, 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, a green light-emitting layer, and an electron transport layer are sequentially formed on the entire surface including the first electrode 41 serving as the anode electrode.
- the organic layer 60 that emits white light is formed.
- a second electrode 70 to be a cathode electrode is formed on the entire surface of the organic layer 60.
- the second electrode 70 can be obtained by forming a film made of a silver magnesium alloy over the entire surface by vapor deposition. Then, after forming the protective film 80 on the entire surface, the counter substrate on which the color filter 90 is formed is bonded to obtain the display device 2 shown in FIG.
- the distance between the light reflecting surface of the reflective film 231 and the second electrode 70 is defined by the thickness of the organic layer 60, the first electrode 41, and the first layer 30 ⁇ / b> A of the interlayer insulating film 30. .
- These can control the film thickness with high accuracy in the process of forming them. Therefore, since the positional relationship between the organic layer and the reflective film can be set with high accuracy, color variations and the like can be suppressed.
- the light reflecting surface of the reflecting film 231 is formed by embedding a metal material in the interlayer insulating film 30. Therefore, the light reflecting surface does not touch the outside air. Therefore, a material such as silver or a silver alloy that has high reflectivity but is easily oxidized can be used as a material for forming the reflective film 231 without any problem.
- the filling member 232 of the reflective film 231 and the contact plug 228 are made of the same material. For this reason, when the interlayer insulating film 30 and the circuit board 220 are bonded together, the contact plug 228 and the reflective film 231 can be favorably electrically bonded.
- the third embodiment is also a modification of the first embodiment.
- the third embodiment is mainly different in that the number of interlayer insulating films positioned between the reflective film and the first electrode differs depending on the display color of the pixel.
- FIG. 25 is a schematic partial cross-sectional view of a display device according to the third embodiment. In addition, what is necessary is just to replace the display apparatus 1 with the display apparatus 3 in FIG.
- the shapes and configurations of the interlayer insulating film 330, the reflective film 331, and the conductive portion 333 are different from the display device 1.
- the interlayer insulating film 330 is formed by laminating a first layer 330A, a second layer 330B, a third layer 330C, a fourth layer 330D, and a fifth layer 330E.
- the interlayer insulating film 330 can be formed of an inorganic insulating material or the like.
- the interlayer insulating film 330 can be configured to include, for example, at least two of a layer made of silicon oxide, a layer made of silicon nitride, and a layer made of silicon oxynitride, Two types of layers may be alternately stacked.
- the interlayer insulating film 330 will be described as being composed of a layer made of silicon oxide and a layer made of silicon nitride.
- the reflective film 331 is disposed on the lower side of the first electrode 41, and is formed to have a light reflective surface provided on the same plane as the boundary surface in contact with a different insulating material in the interlayer insulating film 330.
- the number of interlayer insulating films 330 positioned between the reflective film 331 and the first electrode 41 differs depending on the display color of the pixel 10.
- the reflective film 331A used for the blue display pixel 10 is formed so as to be flush with the boundary surface between the first layer 330A and the second layer 330B in the interlayer insulating film 330. Therefore, the number of layers of the interlayer insulating film 330 located between the reflective film 331A and the first electrode 41 is one.
- the reflective film 331A is embedded in an opening provided in the interlayer insulating film 330 using the first layer 330A as a stopper film.
- the reflective film 331B used in the green display pixel 10 is formed so as to be flush with the boundary surface between the second layer 330B and the third layer 330C in the interlayer insulating film 330. Therefore, the number of interlayer insulating films located between the reflective film 331B and the first electrode 41 is two.
- the reflective film 331B is embedded in an opening provided in the interlayer insulating film 330 using the second layer 330B as a stopper film.
- the reflective film 331C used in the red display pixel 10 is formed so as to be flush with the boundary surface between the third layer 330C and the fourth layer 330D in the interlayer insulating film 330. Therefore, the number of interlayer insulating films located between the reflective film 331C and the first electrode 41 is three.
- the reflective film 331C is embedded in an opening provided in the interlayer insulating film 330 using the third layer 330C as a stopper film.
- the film thickness of the interlayer insulating film 330 positioned between the reflective film 331 and the first electrode 41 is set to be an optical distance corresponding to the display color of the pixel 10.
- the phase shift of the reflected light generated at the first electrode 41 and the reflective film 330 is denoted by ⁇
- the optical distance between the first electrode 41 and the reflective film 331 is denoted by L
- the peak wavelength of the spectrum of the light extracted from the pixel 10 is denoted by
- the reflective film 331 is embedded in the opening provided in the interlayer insulating film 330.
- the reflective film 331 is made of a metal material.
- Reference numeral 332 denotes a filling member that fills the opening on the circuit board 20 side of the reflective film 331.
- the filling member 332 is formed using the same material as that of the planarization film 27 from the viewpoint of bonding properties with the circuit board 20.
- the position of the light reflecting surface of the reflecting film 331 is defined by the thickness of the layers constituting the interlayer insulating film 330.
- the film thickness of the layer constituting the interlayer insulating film 330 and the organic layer 60 can be controlled with high accuracy by a film forming process.
- the dimension between the light reflecting surfaces of the reflective films 331A, 331B, and 331C and the second electrode 70 can be set with high accuracy.
- the first electrode 41 is connected to a drive circuit that drives the pixel 10 via a conducting portion 333 connected to the contact plug 28.
- the detailed structure of the display device 3 has been described above.
- the display device 3 can be manufactured as follows.
- FIG. 26 to FIG. 35 are schematic partial end views for explaining the manufacturing method of the display device according to the third embodiment.
- Step-300 First, a circuit board 20 on which a drive circuit is formed is prepared. Since the configuration of the circuit board 20 is the same as that described in [Step-100], the description thereof is omitted.
- the interlayer insulating film 330 on which the reflective film 331 is formed is disposed on the circuit board 20 according to the procedure shown in FIGS.
- Step-310 A substrate 39 made of a silicon wafer is prepared, and an interlayer insulating film 330 is formed thereon by alternately stacking two types of layers, for example, a layer made of silicon oxide and a layer made of silicon nitride (FIG. 26B). reference).
- the first layer 330A, the third layer 330C, and the fifth layer 330E are layers made of silicon oxide
- the second layer 330B and the fourth layer 330D are layers made of silicon nitride.
- an opening OP331A is formed in the portion corresponding to the reflective film 331A so that the boundary surface between the first layer 330A and the second layer 330B is exposed to the bottom surface, and the portion corresponding to the reflective film 331B
- the opening OP331B is formed so that the boundary surface between the second layer 330B and the third layer 330C is exposed on the bottom surface, and the boundary surface between the third layer 330C and the fourth layer 330D is formed at a portion corresponding to the reflective film 331C.
- Opening OP331C is formed so as to be exposed on the bottom surface.
- the opening OP331A By performing dry etching under conditions such that the first layer 330A acts as a stopper film, the opening OP331A can be formed, and by performing dry etching under conditions where the second layer 330B acts as a stopper film.
- the opening OP331B can be formed, and the opening OP331C can be formed by performing dry etching under conditions such that the third layer 330C acts as a stopper film.
- a portion such as a mask may be appropriately formed on a portion where etching is not performed.
- an opening OP333 is formed so as to penetrate the interlayer insulating film 330 at a portion corresponding to the conductive portion 330 in the interlayer insulating film 330.
- the opening OP333 can be formed by performing dry etching under the condition that the substrate 39 acts as a stopper.
- Step-330 (See FIG. 27) Thereafter, a reflective film 331 and the like are formed in the opening OP331, and a conduction portion 333 is formed in the opening OP333.
- a silver thin film is formed on the entire surface including the opening by sputtering, and then a filling member 32 that fills the opening of the reflective film 331 is formed.
- planarization is performed using, for example, CMP.
- Step-340 (See FIGS. 28, 29, and 30) Subsequently, the interlayer insulating film 330 and the circuit board 20 are opposed to each other (see FIG. 28), and the interlayer insulating film 330 and the circuit board 20 are bonded. By activating the surfaces of the interlayer insulating film 330 and the circuit board 20 and then bringing the surface activated materials into close contact with each other, the interlayer insulating film 330 and the circuit board 20 can be bonded by atomic force (FIG. 29). Next, the substrate 39 is removed (see FIG. 30).
- the light emitting portion ELP and the like are formed on the interlayer insulating film 330 by the procedure shown in FIGS.
- the first electrode 41 is formed on the interlayer insulating film 330. Since the configuration of the first electrode 41 is the same as that described in [Step-150], the description thereof is omitted.
- Step-360 (see FIG. 32) Next, a partition wall 51 as an inter-pixel insulating film is formed between the first electrode 41 and the first electrode 41.
- the configuration of the partition wall 51 is the same as that described in [Step-160] described above, and a description thereof will be omitted.
- Step-370 (see FIG. 33) Next, 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, a green light-emitting layer, and an electron transport layer are sequentially formed on the entire surface including the first electrode 41 serving as the anode electrode.
- the organic layer 60 that emits white light is formed.
- a second electrode 70 to be a cathode electrode is formed on the entire surface of the organic layer 60.
- the second electrode 70 can be obtained by forming a film made of a silver magnesium alloy over the entire surface by vapor deposition (FIG. 34). Then, after forming the protective film 80 on the entire surface, the counter substrate on which the color filter 90 is formed is attached to obtain the display device 3 shown in FIG.
- a resonator structure is formed between the light reflecting surface of the reflective film 331 and the second electrode 70 (portion indicated by an arrow in FIG. 35).
- the distance of this part is prescribed
- the light reflecting surface of the reflecting film 331 is formed by embedding a metal material in the interlayer insulating film 330. Therefore, the light reflecting surface does not touch the outside air. Therefore, a material such as silver or a silver alloy that has high reflectivity but is easily oxidized can be used as a material for forming the reflective film 331 without any problem.
- the stacking cycle of the interlayer insulating film 330 is increased, so that the lateral escape of light can be reduced.
- a pixel with a short distance between the reflective film 331 and the first electrode 41 is expected to be highly efficient because attenuation due to the interface is suppressed. Therefore, color pixels with high light emission efficiency increase the number of stacks to reduce the lateral escape loss of light, and color pixels with low light emission efficiency reduce color mixing by reducing the number of stacks, It is possible to optimize the luminous efficiency.
- the first electrode is formed on the interlayer insulating film, and the lower surface of the first electrode has a boundary surface in contact with a different insulating material in the interlayer insulating film.
- a reflection film having a light reflection surface provided on the same surface is formed.
- the first electrode, the organic layer, and the second electrode are stacked. Therefore, the positional relationship between the organic layer and the reflective film can be set with high accuracy by appropriately setting the thickness of the interlayer insulating film.
- the display device of the present disclosure described above is a display unit (display device) of an electronic device in any field that displays a video signal input to the electronic device or a video signal generated in the electronic device as an image or video.
- a display unit such as a television set, a digital still camera, a notebook personal computer, a mobile terminal device such as a mobile phone, a video camera, a head mounted display (head mounted display), and the like.
- the display device of the present disclosure also includes a module-shaped one with a sealed configuration.
- a display module formed by attaching a facing portion such as transparent glass to the pixel array portion is applicable.
- the display module may be provided with a circuit unit for inputting / outputting signals from the outside to the pixel array unit, a flexible printed circuit (FPC), and the like.
- FPC flexible printed circuit
- a digital still camera and a head mounted display will be exemplified as specific examples of the electronic apparatus using the display device of the present disclosure.
- the specific example illustrated here is only an example, and is not limited thereto.
- FIG. 36 is an external view of an interchangeable lens single-lens reflex digital still camera.
- FIG. 36A shows a front view thereof
- FIG. 36B shows a rear view thereof.
- the interchangeable-lens single-lens reflex digital still camera has, for example, an interchangeable photographing lens unit (interchangeable lens) 412 on the front right side of the camera body (camera body) 411, and is photographed by the photographer on the front left side.
- a grip portion 413 is provided.
- a monitor 414 is provided in the approximate center of the back of the camera body 411.
- a viewfinder (eyepiece window) 415 is provided on the monitor 414. The photographer can look at the viewfinder 415 and visually determine the light image of the subject guided from the photographing lens unit 412 to determine the composition.
- the display device of the present disclosure can be used as the viewfinder 415. That is, the interchangeable lens single-lens reflex digital still camera according to this example is manufactured by using the display device of the present disclosure as the viewfinder 415.
- FIG. 37 is an external view of a head mounted display.
- the head-mounted display has, for example, ear hooks 512 for wearing on the user's head on both sides of a glasses-shaped display unit 511.
- the display device of the present disclosure can be used as the display unit 511. That is, the head mounted display according to the present example is manufactured by using the display device of the present disclosure as the display unit 511.
- FIG. 38 is an external view of a see-through head mounted display.
- the see-through head mounted display 611 includes a main body 612, an arm 613, and a lens barrel 614.
- the main body 612 is connected to the arm 613 and the glasses 600. Specifically, the end of the main body 612 in the long side direction is coupled to the arm 613, and one side of the side surface of the main body 612 is connected to the glasses 600 via a connection member.
- the main body 612 may be directly attached to the head of a human body.
- the main body unit 612 incorporates a control board for controlling the operation of the see-through head mounted display 611 and a display unit.
- the arm 613 connects the main body 612 and the lens barrel 614 to support the lens barrel 614. Specifically, the arm 613 is coupled to the end of the main body 612 and the end of the barrel 614 to fix the barrel 614.
- the arm 613 includes a signal line for communicating data related to an image provided from the main body 612 to the lens barrel 614.
- the lens barrel 614 projects image light provided from the main body 612 via the arm 613 toward the eyes of the user wearing the see-through head mounted display 611 through the eyepiece.
- the display device of the present disclosure can be used for the display unit of the main body unit 612.
- a display device in which pixels having a light emitting portion formed by laminating a first electrode, an organic layer, and a second electrode are formed on a circuit board in a two-dimensional matrix, The first electrode is provided for each light emitting part, and a partition part is formed between adjacent first electrodes, The organic layer and the second electrode are laminated on the entire surface including the first electrode and the partition wall, The first electrode is formed on the interlayer insulating film, On the lower side of the first electrode, a reflective film having a light reflecting surface provided on the same plane as a boundary surface in contact with different insulating materials in the interlayer insulating film is formed. Display device.
- a plurality of interlayer insulation films are laminated so that different kinds of insulation materials are in contact with each other.
- the interlayer insulating film includes at least two of a layer made of silicon oxide, a layer made of silicon nitride, and a layer made of silicon oxynitride.
- the interlayer insulating film is configured by alternately laminating two types of layers.
- [A5] The number of interlayer insulating films located between the reflective film and the first electrode varies depending on the display color of the pixel. The display device according to any one of [A2] to [A4].
- the film thickness of the interlayer insulating film positioned between the reflective film and the first electrode is set to be an optical distance according to the display color of the pixel.
- the display device according to any one of [A2] to [A5].
- [A7] When the phase shift of the reflected light generated in the first electrode and the reflective film is represented by ⁇ , the optical distance between the first electrode and the reflective film is represented by L, and the peak wavelength of the spectrum of the light extracted from the pixel is represented by ⁇ .
- the reflective film is embedded in the opening provided in the interlayer insulating film.
- the display device according to any one of [A1] to [A7].
- the reflective film is made of a metal material, The display device according to any one of [A1] to [A8].
- the reflective film is made of silver or silver alloy, The display device according to [A9].
- the reflective film is composed of an upper layer portion made of silver or a silver alloy and a lower layer portion made of copper or a copper alloy.
- the display device according to [A9].
- the circuit board includes a drive circuit for driving the pixels, The first electrode and the drive circuit are electrically connected.
- the display device according to any one of [A1] to [A11].
- the first electrode and the drive circuit are electrically connected via a reflective film; The display device according to [A12].
- a method of manufacturing a display device in which pixels having a light emitting portion formed by laminating a first electrode, an organic layer, and a second electrode are formed on a circuit board in a two-dimensional matrix, Forming an interlayer insulating film formed on the substrate so that layers made of different types of insulating materials are in contact with each other; Forming an opening in the region of the interlayer insulating film corresponding to the first electrode so that the same surface of the boundary surface where the different insulating material contacts in the interlayer insulating film is exposed at the bottom; Embedding a reflective film in the opening; Bonding the surface embedded with the reflective film to the circuit board, and then removing the board; Forming a light emitting part formed by laminating a first electrode, an organic layer and a second electrode on the interlayer insulating film; Having Manufacturing method of display device.
- the interlayer insulating film includes at least two of a layer made of silicon oxide, a layer made of silicon nitride, and a layer made of silicon oxynitride. The manufacturing method of the display apparatus as described in said [B2].
- the interlayer insulating film is configured by alternately laminating two types of layers. The manufacturing method of the display apparatus as described in said [B3].
- the number of interlayer insulating films located between the reflective film and the first electrode varies depending on the display color of the pixel.
- the method for manufacturing a display device according to any one of [B2] to [B4].
- the film thickness of the interlayer insulating film positioned between the reflective film and the first electrode is set to be an optical distance according to the display color of the pixel.
- the method for manufacturing a display device according to any one of [B2] to [B5].
- [B7] When the phase shift of the reflected light generated in the first electrode and the reflective film is represented by ⁇ , the optical distance between the first electrode and the reflective film is represented by L, and the peak wavelength of the spectrum of the light extracted from the pixel is represented by ⁇ .
- the reflective film is embedded in the opening provided in the interlayer insulating film.
- the reflective film is made of a metal material, The method for manufacturing a display device according to any one of [B1] to [B8].
- the reflective film is made of silver or silver alloy, The manufacturing method of the display apparatus as described in said [B9].
- the reflective film is composed of an upper layer portion made of silver or a silver alloy and a lower layer portion made of copper or a copper alloy.
- the circuit board includes a drive circuit for driving the pixels, The first electrode and the drive circuit are electrically connected.
- the first electrode and the drive circuit are electrically connected via a reflective film; The manufacturing method of the display apparatus as described in said [B12].
- An electronic apparatus including a display device in which pixels having a light emitting portion formed by laminating a first electrode, an organic layer, and a second electrode are arranged on a circuit board in a two-dimensional matrix.
- the first electrode is provided for each light emitting part, and a partition part is formed between adjacent first electrodes,
- the organic layer and the second electrode are laminated on the entire surface including the first electrode and the partition wall,
- the first electrode is formed on the interlayer insulating film, On the lower side of the first electrode, a reflective film having a light reflecting surface provided on the same plane as a boundary surface in contact with different insulating materials in the interlayer insulating film is formed. Electronics.
- the interlayer insulating film includes at least two of a layer made of silicon oxide, a layer made of silicon nitride, and a layer made of silicon oxynitride.
- the interlayer insulating film is configured by alternately laminating two types of layers.
- [C5] The number of interlayer insulating films located between the reflective film and the first electrode varies depending on the display color of the pixel. The electronic device according to any one of [C2] to [C4].
- the film thickness of the interlayer insulating film positioned between the reflective film and the first electrode is set to be an optical distance according to the display color of the pixel.
- the electronic device according to any one of [C2] to [C5].
- [C7] When the phase shift of the reflected light generated in the first electrode and the reflective film is represented by ⁇ , the optical distance between the first electrode and the reflective film is represented by L, and the peak wavelength of the spectrum of light extracted from the pixel is represented by ⁇ .
- the reflective film is embedded in the opening provided in the interlayer insulating film.
- the reflective film is made of a metal material, The electronic device according to any one of [C1] to [C8].
- the reflective film is made of silver or silver alloy, The electronic device according to [C9] above.
- the reflective film is composed of an upper layer portion made of silver or a silver alloy and a lower layer portion made of copper or a copper alloy.
- the circuit board includes a drive circuit for driving the pixels, The first electrode and the drive circuit are electrically connected.
- [C13] The first electrode and the drive circuit are electrically connected via a reflective film; The electronic device according to [C12] above.
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Abstract
Description
第1電極と有機層と第2電極とが積層されて成る発光部を有する画素が、回路基板上に、2次元マトリクス状に配列して形成されている表示装置であって、
第1電極は発光部ごとに設けられていると共に、隣接する第1電極の間には隔壁部が形成されており、
第1電極上と隔壁部上を含む全面に、有機層と第2電極とが積層されており、
第1電極は、層間絶縁膜の上に形成されており、
第1電極の下側には、層間絶縁膜において異なる絶縁材料が接する境界面と同一面に設けられた光反射面を有する反射膜が形成されている、
表示装置である。
第1電極と有機層と第2電極とが積層されて成る発光部を有する画素が、回路基板上に、2次元マトリクス状に配列して形成されている表示装置の製造方法であって、
基板上に、異なる種類の絶縁材料から成る層が接するように積層されて成る層間絶縁膜を形成する工程と、
第1電極に対応する層間絶縁膜の領域に、層間絶縁膜において異なる絶縁材料が接する境界面の同一面が底部に露出するように、開口部を形成する工程と、
開口部に反射膜を埋め込む工程と、
反射膜が埋め込まれた面を回路基板と接合し、次いで、基板を除去する工程と、
層間絶縁膜上に、第1電極と有機層と第2電極とが積層されて成る発光部を形成する工程と、
を有する、
表示装置の製造方法である。
第1電極と有機層と第2電極とが積層されて成る発光部を有する画素が、回路基板上に、2次元マトリクス状に配列して形成されている表示装置を備えた電子機器であって、
表示装置において、
第1電極は発光部ごとに設けられていると共に、隣接する第1電極の間には隔壁部が形成されており、
第1電極上と隔壁部上を含む全面に、有機層と第2電極とが積層されており、
第1電極は、層間絶縁膜の上に形成されており、
第1電極の下側には、層間絶縁膜において異なる絶縁材料が接する境界面と同一面に設けられた光反射面を有する反射膜が形成されている、
電子機器である。
1.本開示の表示装置、表示装置の製造方法、及び、電子機器、全般に関する説明
2.第1の実施形態
3.第2の実施形態
4.第3の実施形態
5.電子機器の説明、その他
本開示に係る表示装置、本開示に係る電子機器に用いられる表示装置、及び、本開示に係る表示装置の製造方法によって得られる表示装置(以下、単に、これらを「本開示の表示装置」と呼ぶ場合がある。)において、層間絶縁膜は異なる種類の絶縁材料が接するように複数積層されて成る構成とすることができる。
2L/λ+Φ/2π=m(mは整数)
の条件を満たす構成とすることができる。
第1の実施形態は、本開示の第1の態様に係る、表示装置、表示装置の製造方法、及び、電子機器に関する。
基板上に、異なる種類の絶縁材料から成る層が接するように積層されて成る層間絶縁膜を形成する工程と、
第1電極に対応する層間絶縁膜の領域に、層間絶縁膜において異なる絶縁材料が接する境界面の同一面が底部に露出するように、開口部を形成する工程と、
開口部に反射膜を埋め込む工程と、
反射膜が埋め込まれた面を回路基板と接合し、次いで、基板を除去する工程と、
層間絶縁膜上に、第1電極と有機層と第2電極とが積層されて成る発光部を形成する工程と、
を有する。後述する他の実施形態においても同様である。
先ず、駆動回路が形成された回路基板20を準備する。基材21を用意し、基材21上に所定の成膜およびパターニングプロセスを経ることにより、薄膜トランジスタを含む駆動回路を形成する。続いて、駆動回路上の全面に平坦化膜27をスピンコート法、スリットコート法、スパッタ法、CVD法などにより形成する。次いで、平坦化膜27に開口部を形成した後、開口部にコンタクトプラグ28を形成することによって、図3Aに示す回路基板20を得ることができる。
シリコンウエハから成る基板39を準備し、その上に、例えば、シリコン酸化物から成る層とシリコン窒化物から成る層といった2種類の層を交互に積層して層間絶縁膜30を形成する(図3B参照)。図に示す例では、第1層30Aと第3層30Cはシリコン酸化物から成る層、第2層30Bはシリコン窒化物から成る層である。
ついで、層間絶縁膜30において反射膜31に対応する部分に、第1層30Aと第2層30Bとの境界面が底面に露出するように開口部OP31を形成する(図4A参照)。例えば、第1層30Aがストッパ膜として作用するような条件でドライエッチングを施すことによって開口部OP31を形成することができる。また、併せて、層間絶縁膜30において導通部33に対応する部分に、層間絶縁膜30を貫通するように開口部OP33を形成する。例えば、基板39がストッパとして作用するような条件でドライエッチングを施すことによって開口部OP33を形成することができる。
その後、開口部OP31の部分に反射膜31などを形成し、併せて、開口部OP33の部分に導通部33を形成する。例えば、開口部を含む全面に銀薄膜をスパッタ法によって形成し、次いで、反射膜31の開口部を充填する充填部材32を形成し、その後、例えばCMP法を用いて平坦化を行う。
続いて、層間絶縁膜30と回路基板20とを対向させた状態とし(図5参照)、層間絶縁膜30と回路基板20とを接合する。例えば、超高真空下で表面の不活性層をプラズマ、加速したイオンビームなどのエネルギー波を照射することによって除去し、層間絶縁膜30と回路基板20との表面を活性化する。次いで、表面活性化した物質同士を密着させることによって、原子間力によって層間絶縁膜30と回路基板20とを接合することができる(図6参照)。次いで、基板39を除去する(図7参照)。
先ず、層間絶縁膜30上に、第1電極41を形成する。例えば、層間絶縁膜30上にITO膜を形成し、次いで、ITO膜をパターニングすることによって、第1電極41を得ることができる。
次いで、第1電極41と第1電極41との間に、画素間絶縁膜としての隔壁部51を形成する。第1電極41を含む全面にシリコン酸窒化物などの無機絶縁膜をスパッタ法またはCVD法などによって成膜する。続いて、成膜した無機絶縁膜をリソグラフィ法およびドライエッチング法によって所定の凹構造となるように画素開口部をパターニングすることによって、隔壁部51を形成することができる。
次いで、アノード電極となる第1電極41上を含む全面に、例えば、ホール注入層、ホール輸送層、赤色発光層、発光分離層、青色発光層、緑色発光層、電子輸送層を順次成膜し、白色で発光する有機層60を形成する。
次いで、有機層60上の全面に、カソード電極となる第2電極70を形成する。例えば、蒸着法によって銀マグネシウム合金から成る膜を全面に亘って形成することによって、第2電極70を得ることができる(図11参照)。その後、全面に保護膜80を形成した後、カラーフィルタ90が形成された対向基板を張り合わせることによって、表示装置1を得ることができる(図12参照)。
第2の実施形態は、第1の実施形態の変形である。第1の実施形態にあっては、第1電極41は、コンタクトプラグ28に接続された導通部33を介して、画素10を駆動する駆動回路に接続されていた。これに対し、第2の実施形態にあっては、第1電極と駆動回路とは反射膜を介して電気的に接続されている点が、主に相違する。
先ず、駆動回路が形成された回路基板220を準備する。基材21を用意し、基材21上に所定の成膜およびパターニングプロセスを経ることにより、薄膜トランジスタを含む駆動回路を形成する。続いて、駆動回路上の全面に平坦化膜27をスピンコート法、スリットコート法、スパッタ法、CVD法などにより形成する。次いで、平坦化膜27に開口部を形成した後、開口部にコンタクトプラグ228を形成することによって、図14Aに示す回路基板220を得ることができる。
シリコンウエハから成る基板39を準備し、その上に、例えば、シリコン酸化物から成る層とシリコン窒化物から成る層といった2種類の層を交互に積層して層間絶縁膜30を形成する(図14B参照)。層間絶縁膜30の組成は、上述した[工程-110]で説明した内容と同様であるので、説明を省略する。
ついで、層間絶縁膜30において反射膜231に対応する部分に、第1層30Aと第2層30Bとの境界面が底面に露出するように開口部OP231を形成する(図15A参照)。例えば、第1層30Aがストッパ膜として作用するような条件でドライエッチングを施すことによって開口部OP231を形成することができる。
その後、開口部OP231の部分に反射膜231などを形成する。例えば、開口部OP231を含む全面に銀薄膜をスパッタ法によって形成し、次いで、反射膜231の開口部を充填する充填部材232を形成し、その後、例えばCMP法を用いて平坦化を行う。
続いて、層間絶縁膜30と回路基板220とを対向させた状態とし(図16参照)、層間絶縁膜30と回路基板220とを接合する。例えば、超高真空下で表面の不活性層をプラズマ、加速したイオンビームなどのエネルギー波を照射することによって除去し、層間絶縁膜30と回路基板220との表面を活性化する。次いで、表面活性化した物質同士を密着させることによって、原子間力によって層間絶縁膜30と回路基板220とを接合することができる(図17参照)。次いで、基板39を除去する(図18参照)。
次いで、層間絶縁膜30において導通部233に対応する部分に開口部OP233を形成する。例えば、反射膜231がストッパとして作用するような条件でドライエッチングを施すことによって開口部OP233を形成することができる(図19参照)。その後、開口部OP233の部分に導通部233を形成する。例えば、全面に導電膜を形成し、その後、例えばCMP法を用いて平坦化を行うことによって、導通部233を形成することができる(図20参照)。
先ず、層間絶縁膜30上に、第1電極41を形成する。例えば、層間絶縁膜30上にITO膜を形成し、次いで、ITO膜をパターニングすることによって、第1電極41を得ることができる。第1電極41と反射膜231とは、導通部233を介して電気的に接続されている。
次いで、第1電極41と第1電極41との間に、画素間絶縁膜としての隔壁部51を形成する。上述した[工程-160]で説明した内容と同様であるので、説明を省略する。
次いで、アノード電極となる第1電極41上を含む全面に、例えば、ホール注入層、ホール輸送層、赤色発光層、発光分離層、青色発光層、緑色発光層、電子輸送層を順次成膜し、白色で発光する有機層60を形成する。
次いで、有機層60上の全面に、カソード電極となる第2電極70を形成する。例えば、蒸着法によって銀マグネシウム合金から成る膜を全面に亘って形成することによって、第2電極70を得ることができる。その後、全面に保護膜80を形成した後、カラーフィルタ90が形成された対向基板を張り合わせることによって、図13に示す表示装置2を得ることができる。
第3の実施形態も、第1の実施形態の変形である。第3の実施形態にあっては、反射膜と第1電極との間に位置する層間絶縁膜の層数が、画素の表示色に応じて異なる点が、主に相違する。
2L/λ+Φ/2π=m(mは整数)
の条件を満たすように設定されている。
先ず、駆動回路が形成された回路基板20を準備する。回路基板20の構成は、上述した[工程-100]で説明した内容と同様であるので、説明を省略する。
シリコンウエハから成る基板39を準備し、その上に、例えば、シリコン酸化物から成る層とシリコン窒化物から成る層といった2種類の層を交互に積層して層間絶縁膜330を形成する(図26B参照)。図に示す例では、第1層330Aと第3層330Cと第5層330Eはシリコン酸化物から成る層、第2層330Bと第4層330Dはシリコン窒化物から成る層である。
ついで、層間絶縁膜330において、反射膜331Aに対応する部分に第1層330Aと第2層330Bとの境界面が底面に露出するように開口部OP331Aを形成し、反射膜331Bに対応する部分に第2層330Bと第3層330Cとの境界面が底面に露出するように開口部OP331Bを形成し、反射膜331Cに対応する部分に第3層330Cと第4層330Dとの境界面が底面に露出するように開口部OP331Cを形成する。
その後、開口部OP331の部分に反射膜331などを形成し、併せて、開口部OP333の部分に導通部333を形成する。例えば、開口部を含む全面に銀薄膜をスパッタ法によって形成し、次いで、反射膜331の開口部を充填する充填部材32を形成し、その後、例えばCMP法を用いて平坦化を行う。
続いて、層間絶縁膜330と回路基板20とを対向させた状態とし(図28参照)、層間絶縁膜330と回路基板20とを接合する。層間絶縁膜330と回路基板20との表面を活性化し、次いで、表面活性化した物質同士を密着させることによって、原子間力によって層間絶縁膜330と回路基板20とを接合することができる(図29参照)。次いで、基板39を除去する(図30参照)。
先ず、層間絶縁膜330上に、第1電極41を形成する。第1電極41の構成は、上述した[工程-150]で説明した内容と同様であるので、説明を省略する。
次いで、第1電極41と第1電極41との間に、画素間絶縁膜としての隔壁部51を形成する。隔壁部51の構成は、上述した[工程-160]で説明した内容と同様であるので、説明を省略する。
次いで、アノード電極となる第1電極41上を含む全面に、例えば、ホール注入層、ホール輸送層、赤色発光層、発光分離層、青色発光層、緑色発光層、電子輸送層を順次成膜し、白色で発光する有機層60を形成する。
次いで、有機層60上の全面に、カソード電極となる第2電極70を形成する。例えば、蒸着法によって銀マグネシウム合金から成る膜を全面に亘って形成することによって、第2電極70を得ることができる(図34)。その後、全面に保護膜80を形成した後、カラーフィルタ90が形成された対向基板を張り合わせることによって、図25に示す表示装置3を得ることができる。
以上説明した本開示の表示装置は、電子機器に入力された映像信号、若しくは、電子機器内で生成した映像信号を、画像若しくは映像として表示するあらゆる分野の電子機器の表示部(表示装置)として用いることができる。一例として、例えば、テレビジョンセット、デジタルスチルカメラ、ノート型パーソナルコンピュータ、携帯電話機等の携帯端末装置、ビデオカメラ、ヘッドマウントディスプレイ(頭部装着型ディスプレイ)等の表示部として用いることができる。
図36は、レンズ交換式一眼レフレックスタイプのデジタルスチルカメラの外観図であり、図36Aにその正面図を示し、図36Bにその背面図を示す。レンズ交換式一眼レフレックスタイプのデジタルスチルカメラは、例えば、カメラ本体部(カメラボディ)411の正面右側に交換式の撮影レンズユニット(交換レンズ)412を有し、正面左側に撮影者が把持するためのグリップ部413を有している。
図37は、ヘッドマウントディスプレイの外観図である。ヘッドマウントディスプレイは、例えば、眼鏡形の表示部511の両側に、使用者の頭部に装着するための耳掛け部512を有している。このヘッドマウントディスプレイにおいて、その表示部511として本開示の表示装置を用いることができる。すなわち、本例に係るヘッドマウントディスプレイは、その表示部511として本開示の表示装置を用いることによって作製される。
図38は、シースルーヘッドマウントディスプレイの外観図である。シースルーヘッドマウントディスプレイ611は、本体部612、アーム613および鏡筒614で構成される。
なお、本開示の技術は以下のような構成も取ることができる。
第1電極と有機層と第2電極とが積層されて成る発光部を有する画素が、回路基板上に、2次元マトリクス状に配列して形成されている表示装置であって、
第1電極は発光部ごとに設けられていると共に、隣接する第1電極の間には隔壁部が形成されており、
第1電極上と隔壁部上を含む全面に、有機層と第2電極とが積層されており、
第1電極は、層間絶縁膜の上に形成されており、
第1電極の下側には、層間絶縁膜において異なる絶縁材料が接する境界面と同一面に設けられた光反射面を有する反射膜が形成されている、
表示装置。
[A2]
層間絶縁膜は異なる種類の絶縁材料が接するように複数積層されて成る、
上記[A1]に記載の表示装置。
[A3]
層間絶縁膜は、シリコン酸化物から成る層、シリコン窒化物から成る層、及び、シリコン酸窒化物から成る層のうちの少なくとも2種類の層を含んでいる、
上記[A2]に記載の表示装置。
[A4]
層間絶縁膜は、2種類の層が交互に積層されて構成されている、
上記[A3]に記載の表示装置。
[A5]
反射膜と第1電極との間に位置する層間絶縁膜の層数は、画素の表示色に応じて異なる、
上記[A2]ないし[A4]のいずれかに記載の表示装置。
[A6]
反射膜と第1電極との間に位置する層間絶縁膜の膜厚は、画素の表示色に応じた光学的距離となるように設定されている、
上記[A2]ないし[A5]のいずれかに記載の表示装置。
[A7]
第1電極および反射膜で生じる反射光の位相シフトを符号Φ、第1電極と反射膜との間の光学的距離を符号L、画素から取り出す光のスペクトルのピーク波長を符号λで表すとき、光学的距離Lは、
2L/λ+Φ/2π=m(mは整数)
の条件を満たす、
上記[A6]のいずれかに記載の表示装置。
[A8]
反射膜は、層間絶縁膜に設けられた開口部に埋め込まれている、
上記[A1]ないし[A7]のいずれかに記載の表示装置。
[A9]
反射膜は金属材料から成る、
上記[A1]ないし[A8]のいずれかに記載の表示装置。
[A10]
反射膜は銀または銀合金から成る、
上記[A9]に記載の表示装置。
[A11]
反射膜は、銀または銀合金から成る上層部と、銅または銅合金からなる下層部とから構成されている、
上記[A9]に記載の表示装置。
[A12]
回路基板は画素を駆動するための駆動回路を備えており、
第1電極と駆動回路とは電気的に接続されている、
上記[A1]ないし[A11]のいずれかに記載の表示装置。
[A13]
第1電極と駆動回路とは反射膜を介して電気的に接続されている、
上記[A12]に記載の表示装置。
第1電極と有機層と第2電極とが積層されて成る発光部を有する画素が、回路基板上に、2次元マトリクス状に配列して形成されている表示装置の製造方法であって、
基板上に、異なる種類の絶縁材料から成る層が接するように積層されて成る層間絶縁膜を形成する工程と、
第1電極に対応する層間絶縁膜の領域に、層間絶縁膜において異なる絶縁材料が接する境界面の同一面が底部に露出するように、開口部を形成する工程と、
開口部に反射膜を埋め込む工程と、
反射膜が埋め込まれた面を回路基板と接合し、次いで、基板を除去する工程と、
層間絶縁膜上に、第1電極と有機層と第2電極とが積層されて成る発光部を形成する工程と、
を有する、
表示装置の製造方法。
[B2]
層間絶縁膜は異なる種類の絶縁材料が接するように複数積層されて成る、
上記[B1]に記載の表示装置の製造方法。
[B3]
層間絶縁膜は、シリコン酸化物から成る層、シリコン窒化物から成る層、及び、シリコン酸窒化物から成る層のうちの少なくとも2種類の層を含んでいる、
上記[B2]に記載の表示装置の製造方法。
[B4]
層間絶縁膜は、2種類の層が交互に積層されて構成されている、
上記[B3]に記載の表示装置の製造方法。
[B5]
反射膜と第1電極との間に位置する層間絶縁膜の層数は、画素の表示色に応じて異なる、
上記[B2]ないし[B4]のいずれかに記載の表示装置の製造方法。
[B6]
反射膜と第1電極との間に位置する層間絶縁膜の膜厚は、画素の表示色に応じた光学的距離となるように設定されている、
上記[B2]ないし[B5]のいずれかに記載の表示装置の製造方法。
[B7]
第1電極および反射膜で生じる反射光の位相シフトを符号Φ、第1電極と反射膜との間の光学的距離を符号L、画素から取り出す光のスペクトルのピーク波長を符号λで表すとき、光学的距離Lは、
2L/λ+Φ/2π=m(mは整数)
の条件を満たす、
上記[B6]のいずれかに記載の表示装置の製造方法。
[B8]
反射膜は、層間絶縁膜に設けられた開口部に埋め込まれている、
上記[B1]ないし[B7]のいずれかに記載の表示装置の製造方法。
[B9]
反射膜は金属材料から成る、
上記[B1]ないし[B8]のいずれかに記載の表示装置の製造方法。
[B10]
反射膜は銀または銀合金から成る、
上記[B9]に記載の表示装置の製造方法。
[B11]
反射膜は、銀または銀合金から成る上層部と、銅または銅合金からなる下層部とから構成されている、
上記[B9]に記載の表示装置の製造方法。
[B12]
回路基板は画素を駆動するための駆動回路を備えており、
第1電極と駆動回路とは電気的に接続されている、
上記[B1]ないし[B11]のいずれかに記載の表示装置の製造方法。
[B13]
第1電極と駆動回路とは反射膜を介して電気的に接続されている、
上記[B12]に記載の表示装置の製造方法。
第1電極と有機層と第2電極とが積層されて成る発光部を有する画素が、回路基板上に、2次元マトリクス状に配列して形成されている表示装置を備えた電子機器であって、
表示装置において、
第1電極は発光部ごとに設けられていると共に、隣接する第1電極の間には隔壁部が形成されており、
第1電極上と隔壁部上を含む全面に、有機層と第2電極とが積層されており、
第1電極は、層間絶縁膜の上に形成されており、
第1電極の下側には、層間絶縁膜において異なる絶縁材料が接する境界面と同一面に設けられた光反射面を有する反射膜が形成されている、
電子機器。
[C2]
層間絶縁膜は異なる種類の絶縁材料が接するように複数積層されて成る、
上記[C1]に記載の電子機器。
[C3]
層間絶縁膜は、シリコン酸化物から成る層、シリコン窒化物から成る層、及び、シリコン酸窒化物から成る層のうちの少なくとも2種類の層を含んでいる、
上記[C2]に記載の電子機器。
[C4]
層間絶縁膜は、2種類の層が交互に積層されて構成されている、
上記[C3]に記載の電子機器。
[C5]
反射膜と第1電極との間に位置する層間絶縁膜の層数は、画素の表示色に応じて異なる、
上記[C2]ないし[C4]のいずれかに記載の電子機器。
[C6]
反射膜と第1電極との間に位置する層間絶縁膜の膜厚は、画素の表示色に応じた光学的距離となるように設定されている、
上記[C2]ないし[C5]のいずれかに記載の電子機器。
[C7]
第1電極および反射膜で生じる反射光の位相シフトを符号Φ、第1電極と反射膜との間の光学的距離を符号L、画素から取り出す光のスペクトルのピーク波長を符号λで表すとき、光学的距離Lは、
2L/λ+Φ/2π=m(mは整数)
の条件を満たす、
上記[C6]のいずれかに記載の電子機器。
[C8]
反射膜は、層間絶縁膜に設けられた開口部に埋め込まれている、
上記[C1]ないし[C7]のいずれかに記載の電子機器。
[C9]
反射膜は金属材料から成る、
上記[C1]ないし[C8]のいずれかに記載の電子機器。
[C10]
反射膜は銀または銀合金から成る、
上記[C9]に記載の電子機器。
[C11]
反射膜は、銀または銀合金から成る上層部と、銅または銅合金からなる下層部とから構成されている、
上記[C9]に記載の電子機器。
[C12]
回路基板は画素を駆動するための駆動回路を備えており、
第1電極と駆動回路とは電気的に接続されている、
上記[C1]ないし[C11]のいずれかに記載の電子機器。
[C13]
第1電極と駆動回路とは反射膜を介して電気的に接続されている、
上記[C12]に記載の電子機器。
Claims (15)
- 第1電極と有機層と第2電極とが積層されて成る発光部を有する画素が、回路基板上に、2次元マトリクス状に配列して形成されている表示装置であって、
第1電極は発光部ごとに設けられていると共に、隣接する第1電極の間には隔壁部が形成されており、
第1電極上と隔壁部上を含む全面に、有機層と第2電極とが積層されており、
第1電極は、層間絶縁膜の上に形成されており、
第1電極の下側には、層間絶縁膜において異なる絶縁材料が接する境界面と同一面に設けられた光反射面を有する反射膜が形成されている、
表示装置。 - 層間絶縁膜は異なる種類の絶縁材料が接するように複数積層されて成る、
請求項1に記載の表示装置。 - 層間絶縁膜は、シリコン酸化物から成る層、シリコン窒化物から成る層、及び、シリコン酸窒化物から成る層のうちの少なくとも2種類の層を含んでいる、
請求項2に記載の表示装置。 - 層間絶縁膜は、2種類の層が交互に積層されて構成されている、
請求項3に記載の表示装置。 - 反射膜と第1電極との間に位置する層間絶縁膜の層数は、画素の表示色に応じて異なる、
請求項2に記載の表示装置。 - 反射膜と第1電極との間に位置する層間絶縁膜の膜厚は、画素の表示色に応じた光学的距離となるように設定されている、
請求項2に記載の表示装置。 - 第1電極および反射膜で生じる反射光の位相シフトを符号Φ、第1電極と反射膜との間の光学的距離を符号L、画素から取り出す光のスペクトルのピーク波長を符号λで表すとき、光学的距離Lは、
2L/λ+Φ/2π=m(mは整数)
の条件を満たす、
請求項6に記載の表示装置。 - 反射膜は、層間絶縁膜に設けられた開口部に埋め込まれている、
請求項1に記載の表示装置。 - 反射膜は金属材料から成る、
請求項1に記載の表示装置。 - 反射膜は銀または銀合金から成る、
請求項9に記載の表示装置。 - 反射膜は、銀または銀合金から成る上層部と、銅または銅合金からなる下層部とから構成されている、
請求項9に記載の表示装置。 - 回路基板は画素を駆動するための駆動回路を備えており、
第1電極と駆動回路とは電気的に接続されている、
請求項1に記載の表示装置。 - 第1電極と駆動回路とは反射膜を介して電気的に接続されている、
請求項12に記載の表示装置。 - 第1電極と有機層と第2電極とが積層されて成る発光部を有する画素が、回路基板上に、2次元マトリクス状に配列して形成されている表示装置の製造方法であって、
基板上に、異なる種類の絶縁材料から成る層が接するように積層されて成る層間絶縁膜を形成する工程と、
第1電極に対応する層間絶縁膜の領域に、層間絶縁膜において異なる絶縁材料が接する境界面の同一面が底部に露出するように、開口部を形成する工程と、
開口部に反射膜を埋め込む工程と、
反射膜が埋め込まれた面を回路基板と接合し、次いで、基板を除去する工程と、
層間絶縁膜上に、第1電極と有機層と第2電極とが積層されて成る発光部を形成する工程と、
を有する、
表示装置の製造方法。 - 第1電極と有機層と第2電極とが積層されて成る発光部を有する画素が、回路基板上に、2次元マトリクス状に配列して形成されている表示装置を備えた電子機器であって、
表示装置において、
第1電極は発光部ごとに設けられていると共に、隣接する第1電極の間には隔壁部が形成されており、
第1電極上と隔壁部上を含む全面に、有機層と第2電極とが積層されており、
第1電極は、層間絶縁膜の上に形成されており、
第1電極の下側には、層間絶縁膜において異なる絶縁材料が接する境界面と同一面に設けられた光反射面を有する反射膜が形成されている、
電子機器。
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201980030259.1A CN112106445B (zh) | 2018-05-11 | 2019-04-23 | 显示装置、用于驱动显示装置的方法以及电子设备 |
| CN202410803316.8A CN118829276A (zh) | 2018-05-11 | 2019-04-23 | 显示装置 |
| US17/052,994 US12389758B2 (en) | 2018-05-11 | 2019-04-23 | Display device, method for manufacturing display device, and electronic apparatus with interlayer insulation film |
| JP2020518239A JP7184882B2 (ja) | 2018-05-11 | 2019-04-23 | 表示装置、表示装置の製造方法、及び、電子機器 |
| CN202410803310.0A CN118829275A (zh) | 2018-05-11 | 2019-04-23 | 显示装置 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2020043059A (ja) * | 2018-08-21 | 2020-03-19 | コミサリア ア レネルジ アトミク エ オウ エネルジ アルタナティヴ | 有機発光ダイオードマイクロスクリーン用のピクセル |
| WO2024018756A1 (ja) * | 2022-07-21 | 2024-01-25 | キヤノン株式会社 | 発光装置、表示装置、光電変換装置、電子機器、照明装置、および、移動体 |
| JP2024014681A (ja) * | 2022-07-21 | 2024-02-01 | キヤノン株式会社 | 発光装置、表示装置、光電変換装置、電子機器、照明装置、および、移動体 |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108963108B (zh) | 2018-08-01 | 2020-06-26 | 京东方科技集团股份有限公司 | 一种电极及其制作方法、发光器件和显示装置 |
| US11980046B2 (en) * | 2020-05-27 | 2024-05-07 | Taiwan Semiconductor Manufacturing Company, Ltd. | Method for forming an isolation structure having multiple thicknesses to mitigate damage to a display device |
| KR20220030361A (ko) * | 2020-08-28 | 2022-03-11 | 삼성디스플레이 주식회사 | 유기발광 표시장치 및 이의 제조 방법 |
| TW202243238A (zh) * | 2020-12-25 | 2022-11-01 | 日商索尼半導體解決方案公司 | 顯示裝置及電子機器 |
| US11810907B2 (en) * | 2021-01-27 | 2023-11-07 | Taiwan Semiconductor Manufacturing Company, Ltd. | Pixel structure for displays |
| KR20230089294A (ko) * | 2021-12-13 | 2023-06-20 | 엘지디스플레이 주식회사 | 투명 표시 장치 |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004259607A (ja) * | 2003-02-26 | 2004-09-16 | Seiko Epson Corp | 表示パネルおよび表示装置 |
| JP2008135373A (ja) * | 2006-10-24 | 2008-06-12 | Canon Inc | 有機発光装置及びその製造方法 |
| KR20090062194A (ko) * | 2007-12-12 | 2009-06-17 | 엘지디스플레이 주식회사 | 유기전계발광표시장치와 이의 제조방법 |
| KR20090132356A (ko) * | 2008-06-20 | 2009-12-30 | 엘지디스플레이 주식회사 | 유기발광다이오드 표시소자와 그 제조방법 |
| KR20160039105A (ko) * | 2014-09-30 | 2016-04-08 | 엘지디스플레이 주식회사 | 유기발광표시장치 |
Family Cites Families (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW511298B (en) * | 1999-12-15 | 2002-11-21 | Semiconductor Energy Lab | EL display device |
| AU2003284470A1 (en) * | 2002-12-10 | 2004-06-30 | Semiconductor Energy Laboratory Co., Ltd. | Light-emitting device and its fabricating method |
| WO2006013373A2 (en) * | 2004-08-04 | 2006-02-09 | Cambridge Display Technology Limited | Organic electroluminescent device |
| JP2006278257A (ja) | 2005-03-30 | 2006-10-12 | Sony Corp | 有機発光装置およびその製造方法 |
| JP2007004997A (ja) * | 2005-06-21 | 2007-01-11 | Sony Corp | 表示装置及び表示装置の製造方法 |
| JP4645587B2 (ja) * | 2006-02-03 | 2011-03-09 | ソニー株式会社 | 表示素子および表示装置 |
| JP2010232163A (ja) * | 2009-03-03 | 2010-10-14 | Fujifilm Corp | 発光表示装置の製造方法、発光表示装置、及び発光ディスプレイ |
| KR101983229B1 (ko) * | 2010-07-23 | 2019-05-29 | 삼성디스플레이 주식회사 | 유기 발광 표시 장치 및 그의 제조 방법 |
| JP5927476B2 (ja) * | 2011-10-03 | 2016-06-01 | 株式会社Joled | 表示装置および電子機器 |
| JP2013153068A (ja) | 2012-01-25 | 2013-08-08 | Shinko Electric Ind Co Ltd | 配線基板、発光装置及び配線基板の製造方法 |
| KR101339440B1 (ko) * | 2012-01-26 | 2013-12-10 | 한국전자통신연구원 | 유기 발광 소자 및 유기 발광 소자 제조 방법 |
| JP6111643B2 (ja) * | 2012-12-17 | 2017-04-12 | セイコーエプソン株式会社 | 有機エレクトロルミネッセンス装置、及び電子機器 |
| JP2014186257A (ja) * | 2013-03-25 | 2014-10-02 | Sony Corp | 表示装置および電子機器 |
| CN103928495B (zh) | 2013-12-31 | 2017-01-18 | 上海天马有机发光显示技术有限公司 | 一种oled显示面板及其制备方法、显示装置 |
| JP6318665B2 (ja) * | 2014-02-10 | 2018-05-09 | セイコーエプソン株式会社 | 電気光学装置、電気光学装置の製造方法、電子機器 |
| CN104062800B (zh) * | 2014-06-12 | 2016-08-17 | 京东方科技集团股份有限公司 | 一种显示基板、显示面板及显示装置 |
| CN105390504B (zh) * | 2014-08-29 | 2019-02-01 | 乐金显示有限公司 | 薄膜晶体管基板及使用它的显示装置 |
| CN105590951B (zh) * | 2014-11-10 | 2019-04-09 | 乐金显示有限公司 | 具有多模腔结构的有机发光二极管显示器 |
| JP5918340B2 (ja) | 2014-11-25 | 2016-05-18 | ユー・ディー・シー アイルランド リミテッド | カラー表示装置及びその製造方法 |
| JP6358078B2 (ja) | 2014-12-25 | 2018-07-18 | セイコーエプソン株式会社 | 電気光学装置及び電子機器 |
| KR101866243B1 (ko) * | 2015-01-21 | 2018-06-12 | 코닝정밀소재 주식회사 | 유기발광소자용 광추출 기판 및 이를 포함하는 유기발광소자 |
| JP6601047B2 (ja) | 2015-08-07 | 2019-11-06 | ソニー株式会社 | 発光素子及びその製造方法、並びに、表示装置 |
| KR102656795B1 (ko) * | 2016-11-30 | 2024-04-11 | 엘지디스플레이 주식회사 | 유기발광 표시장치와 그의 제조방법 |
-
2019
- 2019-04-23 WO PCT/JP2019/017184 patent/WO2019216198A1/ja not_active Ceased
- 2019-04-23 CN CN202410803310.0A patent/CN118829275A/zh not_active Withdrawn
- 2019-04-23 CN CN201980030259.1A patent/CN112106445B/zh active Active
- 2019-04-23 US US17/052,994 patent/US12389758B2/en active Active
- 2019-04-23 JP JP2020518239A patent/JP7184882B2/ja active Active
- 2019-04-23 CN CN202410803316.8A patent/CN118829276A/zh active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004259607A (ja) * | 2003-02-26 | 2004-09-16 | Seiko Epson Corp | 表示パネルおよび表示装置 |
| JP2008135373A (ja) * | 2006-10-24 | 2008-06-12 | Canon Inc | 有機発光装置及びその製造方法 |
| KR20090062194A (ko) * | 2007-12-12 | 2009-06-17 | 엘지디스플레이 주식회사 | 유기전계발광표시장치와 이의 제조방법 |
| KR20090132356A (ko) * | 2008-06-20 | 2009-12-30 | 엘지디스플레이 주식회사 | 유기발광다이오드 표시소자와 그 제조방법 |
| KR20160039105A (ko) * | 2014-09-30 | 2016-04-08 | 엘지디스플레이 주식회사 | 유기발광표시장치 |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2020043059A (ja) * | 2018-08-21 | 2020-03-19 | コミサリア ア レネルジ アトミク エ オウ エネルジ アルタナティヴ | 有機発光ダイオードマイクロスクリーン用のピクセル |
| JP7421884B2 (ja) | 2018-08-21 | 2024-01-25 | コミサリア ア レネルジ アトミク エ オウ エネルジ アルタナティヴ | 有機発光ダイオードマイクロスクリーン用のピクセル |
| WO2024018756A1 (ja) * | 2022-07-21 | 2024-01-25 | キヤノン株式会社 | 発光装置、表示装置、光電変換装置、電子機器、照明装置、および、移動体 |
| JP2024014681A (ja) * | 2022-07-21 | 2024-02-01 | キヤノン株式会社 | 発光装置、表示装置、光電変換装置、電子機器、照明装置、および、移動体 |
| JP7606547B2 (ja) | 2022-07-21 | 2024-12-25 | キヤノン株式会社 | 発光装置、表示装置、光電変換装置、電子機器、照明装置、および、移動体 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112106445A (zh) | 2020-12-18 |
| CN112106445B (zh) | 2024-07-16 |
| CN118829276A (zh) | 2024-10-22 |
| US20210111235A1 (en) | 2021-04-15 |
| JP7184882B2 (ja) | 2022-12-06 |
| US12389758B2 (en) | 2025-08-12 |
| CN118829275A (zh) | 2024-10-22 |
| JPWO2019216198A1 (ja) | 2021-06-17 |
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