CN103258838A - A display apparatus and a method for manufacturing the same - Google Patents

A display apparatus and a method for manufacturing the same Download PDF

Info

Publication number
CN103258838A
CN103258838A CN2013100508902A CN201310050890A CN103258838A CN 103258838 A CN103258838 A CN 103258838A CN 2013100508902 A CN2013100508902 A CN 2013100508902A CN 201310050890 A CN201310050890 A CN 201310050890A CN 103258838 A CN103258838 A CN 103258838A
Authority
CN
China
Prior art keywords
electrode
light
organic
execution mode
layer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN2013100508902A
Other languages
Chinese (zh)
Other versions
CN103258838B (en
Inventor
山田二郎
木曾弘之
佐藤千代子
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Japan Display Design And Development Contract Society
Original Assignee
Sony Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP2012223389A external-priority patent/JP6082907B2/en
Application filed by Sony Corp filed Critical Sony Corp
Publication of CN103258838A publication Critical patent/CN103258838A/en
Application granted granted Critical
Publication of CN103258838B publication Critical patent/CN103258838B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Electroluminescent Light Sources (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

The invention discloses a display apparatus and a method for manufacturing the same. The display apparatus comprises a plurality of light-emitting devices formed on a substrate, a plurality of first components which are corresponding to the light-emitting components and are each directly formed on one part of the corresponding light-emitting device, and a plurality of second components formed in areas between adjacent first components. The first components and the second components are configured to reflect and guide at least one part of light which is emitted from the light-emitting part and passes through the first components.

Description

Display device reaches the method for the manufacture of display device
Technical field
The disclosure relates generally to a kind of display device.More specifically, the disclosure relates to and a kind ofly adopts the display device of luminescent device and relate to a kind of method for the manufacture of display device.
Background technology
In recent years, lighting apparatus and organic electro-luminescence display device catch on.Lighting apparatus and organic electro-luminescence display device are to adopt organic electroluminescence device as the equipment of luminescent device.In the following description, organic electroluminescence device abbreviates organic EL device as, and organic electro-luminescence display device abbreviates organic EL display apparatus as.In addition, in the organic EL display apparatus field, split hair and have tight demand in the technology of obtaining light highly effectively.If the efficient of obtaining light is low, then can't effectively utilize the amount of the actual light that sends from organic EL device.Therefore, organic EL display apparatus can cause heavy losses at aspects such as power consumptions.
Obtain efficient for improving light, a kind of organic EL display apparatus with reflector is provided, disclose in 2007-248484 number (hereinafter referred to as patent documentation 1) disclosed as Japan Patent.Disclosed organic EL display apparatus is included on the hermetic sealing substrate 30 towards the light guide section 50 as each display device of luminescent device 20 in the patent documentation 1.Light guide section 50 is as reflector.Light guide section 50 has the light-emitting face 52 on the light entrance face 51 of luminescent device 20 and the side relative with light entrance face 51.In addition, light guide section 50 has on certain orientation the trapezoidal cross-sections of 52 expansions from light entrance face 51 to light-emitting face usually.On the side 53 of light guide section 50, be formed with reflective membrane 54.Reflective membrane 54 is multilayer films of being made by metal simple-substance, metal alloy or derived material.The representative instance of metal is aluminium (Al) and silver (Ag).In addition, the space available air that is surrounded by the reflective membrane 54 of light guide section adjacent one another are 50 is filled or at least a portion in this space can be filled with intermediate layer 40.Display device 20 is arranged on and drives on the substrate 10, and light guide section 50 is arranged on the hermetic sealing substrate 30.Be attached on the hermetic sealing substrate 30 by utilizing the adhesive phase of being made by thermosetting resin or ultraviolet hardening resin usually 41 will drive substrate 10.To drive substrate 10 and be attached on the hermetic sealing substrate 30 so that display device 20 is exposed to this mode of light guide section 50.In addition, can make light total reflection on side 53 by the refringence between light guide section 50 inboards and light guide section 50 outsides is set.It should be noted that in the following description for simplicity, above-mentioned existing reflector structure is called as the face reflector structure.
Summary of the invention
As mentioned above, in patent documentation 1 disclosed organic EL display apparatus, display device 20 is covered by adhesive phase 41.That is to say that adhesive phase 41 is present in the space between display device 20 and the light guide section 50.Therefore, the light that is sent by display device 20 is reflected on the interface between display device 20 and the adhesive phase 41 fully.Therefore, worry that light obtains efficient and may reduce in some cases.It is the efficient of effectively being used in display device 20 outsides by the light that display device 20 sends that light obtains efficient.In addition, in some cases, be derived from display device 20 and the light by adhesive phase 41 and can not propagate into reflective membrane 54 for the light guide section 50 of display device 20.On the contrary, this light inadvertently enters in the part that the reflective membrane 54 by adjacent light guide section 50 surrounds.The most important thing is, though can set light guide section 50 inboard with light guide section 50 outsides between refringence so that the total reflection of light on side 53 to be provided, patent documentation 1 does not comprise any specific descriptions about why the refringence setting being worth yet.
Therefore, need provide a kind of can further improve obtain by luminescent device be transmitted into outside light efficient display device and for the manufacture of the method for this equipment.In addition, also expectation provide a kind of for the manufacture of can further improve obtain by luminescent device be transmitted into outside light efficient simple displaying equipment method and for the manufacture of the method for this equipment.
For realizing above-mentioned first requirement, in one embodiment, provide a kind of display unit, comprise a plurality of luminescent devices, be formed on the substrate; A plurality of first members, corresponding with luminescent device and be formed directly on the part of corresponding luminescent device; And a plurality of second members, be formed in the zone between adjacent first member.First member and second member are configured to reflect and guide at least a portion of the light that passes through first member that sends from illuminating part.
In another embodiment, provide a kind of electronic equipment, comprised display unit, described display unit comprises a plurality of luminescent devices, is formed on the substrate; A plurality of first members, corresponding with luminescent device and be formed directly on the part of corresponding luminescent device; And a plurality of second members, be formed in the zone between adjacent first member.In this embodiment, first member and second member are configured to reflect and guide at least a portion of the light that passes through first member that sends from illuminating part.
In another embodiment, provide a kind of method of making display unit.This method comprises: form a plurality of luminescent devices at substrate; On the part of corresponding luminescent device, directly form a plurality of first members corresponding with luminescent device; And be formed on a plurality of second members that form in the zone between adjacent first member.In this embodiment, first member and second member are configured to reflect and guide at least a portion of the light that passes through first member that sends from illuminating part.
In another embodiment, provide a kind of display unit, comprised a plurality of luminescent devices, be formed on the substrate; A plurality of first members, corresponding with luminescent device, each first member is formed on in the luminescent device corresponding one; And a plurality of second members, be formed in the zone between adjacent first member.In this embodiment, the refractive index value n of first member 1Refractive index value n with second member 2Different.
According to this execution mode, even if the interface between first and second member does not arrange reflective member etc., also can further improve and obtain the efficient that is transmitted into outside light by luminescent device.In addition, according to provided to be used as the described method for the manufacture of the method for display device by the first method execution mode, first member directly is structured in second electrode top.Therefore, unlike the prior art, there is not loss in the light that obtains from the light that is sent by luminescent device.In addition, because there is adhesive phase in the position between second electrode and reflector, so will cause this loss.The most important thing is, according to provided to be used as the described method for the manufacture of the method for display device by the second method execution mode, by utilizing stamping die, can obtain to comprise the adhesive phase that is used as second member and the reflector layer that is used as the resin material layer of first member.Therefore, by adopting this simple manufacturing method, can make a kind of can the raising and obtain the display device that is transmitted into the efficient of outside light by luminescent device.
Description of drawings
Fig. 1 is the illustraton of model that illustrates according to the part of the section of the display device of first execution mode;
Fig. 2 A and Fig. 2 B are respectively the sub-pixel matrix norm type figure that illustrates according in the display device of first to the 5th execution mode;
Fig. 3 illustrates expression according to the schematic diagram of the curve of the analog result of the radiation angle distribution of the brightness in the display device of first execution mode and the typical case's contrast display device 1 ';
Fig. 4 A and Fig. 4 B are the schematic diagrames that illustrates according to the analog result of the I/O state of the light beam in the display device of the 3rd execution mode and the typical case's contrast display device 3;
Fig. 5 A is the schematic diagram that the analog result that the radiation angle of the brightness in display device according to the 3rd execution mode, typical case's contrast display device 3 and the typical case's contrast display device 3 ' distributes is shown, and Fig. 5 B illustrates expression according to the angle of visual field of the light that adopts the selfluminous element schematic diagram as the curve of the Energy distribution in first member of the display device of the 3rd execution mode of parameter;
Fig. 6 is the illustraton of model that illustrates according to the part of the section of the display device of the 4th execution mode;
Fig. 7 is the schematic diagram that the analog result that distributes according to the radiation angle of the brightness in the display device of the 4th execution mode 4B is shown;
Fig. 8 is the illustraton of model that illustrates according to the part of the section of the display device of the 5th execution mode;
Fig. 9 A to Fig. 9 F be illustrate respectively first substrate etc. section a part and be used separately as at the schematic diagram for the manufacture of the key diagram of reference in according to the summary description of the method for the display device of first execution mode (that is, provided by the first method execution mode of the present disclosure with as the method for the manufacture of a kind of method of display device);
Figure 10 A to Figure 10 D be illustrate respectively glass substrate etc. section a part and be used separately as at the schematic diagram for the manufacture of the key diagram of reference in according to the summary description of the other method of the display device of first execution mode (that is, provided by the second method execution mode of the present disclosure with as the method for the manufacture of the other method of display device);
Figure 11 is the illustraton of model of a part that the section of the typical revision that obtains by the display device of revising according to the 4th execution mode is shown.
Embodiment
Next, hereinafter will set forth execution mode of the present disclosure by the reference schematic diagram.Yet enforcement of the present disclosure never is limited to described execution mode.That is to say that the various materials that use in the various numerals of using in the described execution mode and the described execution mode only are typical.It should be noted that explanation of the present disclosure is divided into the theme of arranging in the following order.
1: to providing to describe as the generality of the method that is respectively applied to make the method that display device adopts according to display device of the present disclosure and by the first and second method execution modes of the present disclosure
2: the first execution modes (providing with as the method that is respectively applied to make the method that display device adopts according to display device of the present disclosure and by the first and second method execution modes of the present disclosure)
3: the second execution modes (a kind of revision of first execution mode)
4: the three execution modes (another revision of first execution mode)
5: the four execution modes (the another revision of first execution mode)
6: the five execution modes (revision again of first execution mode) and other
Provide to describe as the generality of the method that is respectively applied to make the method that display device adopts according to display device of the present disclosure and by the first and second method execution modes of the present disclosure
In the following description, provide generally can abbreviate the display device that is provided by the disclosure as in some cases as the display device for the manufacture of the method manufacturing of the method for display device according to display device of the present disclosure and by adopting by the of the present disclosure first or second method execution mode.
The display device that provided by the disclosure can be provided or provide with as in the display device of making for the manufacture of the method for the method of display device by adopting by the second method execution mode of the present disclosure, luminescent device and first member are adjacent one another are.Therefore, the light that is sent by illuminating part always directly propagates into first member.Therefore, light obtains efficient and never reduces.
Can be set at the execution mode that is transmitted into outside light for output by each luminescent device by second substrate with being provided by the disclosure with the display device as the display device that comprises above-mentioned desirable configuration.It should be noted that this display device can be called as the display device with top emission type in some cases.Yet, never be limited to the display device with top emission type according to display device of the present disclosure.For example, can also adopt and to export outside structure by the light that each luminescent device sends to by first substrate.It should be noted that and have for will being called as the display device with bottom-emission type in some cases by the display device that first substrate outputs to outside structure by the light that each luminescent device sends.
In the desirable execution mode of the display device of implementing to have top emission type, diaphragm and sealing material layer further are formed on the reflector layer.In this case, can expect to provide a kind of configuration, wherein, following relational expression is suitable for:
|n 3-n 4|≤0.3。
Substitute as a kind of, can expect to provide a kind of configuration, wherein, the relational expression that hereinafter painstakingly provides is suitable for:
|n 3-n 4|≤0.2。
In the above-mentioned relation formula, reference symbol n 3And n 4The refractive index of representing diaphragm and sealing material layer respectively.Therefore, can prevent effectively that the interface of light between diaphragm and sealing material layer is reflected and scattering.It should be noted that a kind of configuration also can be set to be fabricated simultaneously and be bonded to each other to form as first member and diaphragm the configuration of combination.In addition, in comprising the top emission type display device of this desirable configuration, can will be sent by luminescent device and be set at value in 1.5 to 2.0 scopes by the amount that first member and second substrate export outside light to, wherein, value 1 be represented the amount of the light that sends from the center of luminescent device.
If display device is color display apparatus, then a pixel in the color display apparatus is configured to comprise three sub-pixels or at least four pixels.Three sub-pixels are be used to sending the emitting red light sub-pixel with red light, the blue-light-emitting sub-pixel that is used for sending the green emitting sub-pixel of the light with green and is used for sending the light with blueness.In this color display apparatus, can provide a kind of configuration as described below.The emitting red light sub-pixel is by being used for sending the luminescent device configuration with red light, and the green emitting sub-pixel is by the luminescent device configuration that is used for sending the light with green, and the blue-light-emitting sub-pixel is by being used for sending the luminescent device configuration with blue light.In comprising the top emission type display device of this desirable configuration, second substrate can be configured to comprise colour filter, and luminescent device can be configured to send the light with white.In addition, each colorful light-emitting sub-pixel can be by disposing for the luminescent device that sends the light with white and the combination of colour filter.In this configuration, second substrate can be configured to comprise the film that is in the light that is called black matrix".By the same token, in the display device of bottom-emission type, the film that is in the light that first substrate can be configured to comprise colour filter and be called black matrix".
In the display device with aforesaid desirable configuration according to disclosure execution mode, pixel or sub-pixel can be disposed by luminescent device.In this case, first member can be built as the shape with the round platform (or rotary body without a head) that satisfies following relational expression:
0.5≤R 1/ R 2≤ 0.8 and
0.5≤H/R 1≤2.0。
In the above-mentioned relation formula, reference symbol R 1The diameter of representing the light entrance face of first member, reference symbol R 2The diameter of representing the light-emitting face of first member, and reference character H is represented the height of first member.
The cross sectional shape that it should be noted that the inclined plane of round platform can be combination or the curve of straight line, many line segments.Also should keep firmly in mind, the cross sectional shape of round platform is the shape by the cross section that obtains of cutting round platform above the virtual plane of the axis that comprises round platform.This technical term " cross sectional shape " uses with identical meanings in the following description.
In addition, can expect to satisfy following relational expression:
0.5≤R 0/R 1≤1.0。
In the above-mentioned relation formula, reference symbol R 0The diameter of expression illuminating part.
Substitute as a kind of, in the display device with aforesaid desirable configuration according to disclosure execution mode, pixel or sub-pixel can be configured to comprise that gathering is to form a plurality of luminescent devices of one group.In this case, first member can be built as the shape with the round platform (or rotary body without a head) that satisfies following relational expression:
0.5≤R 1/ R 2≤ 0.8 and
0.5≤H/R 1≤2.0。
In the above-mentioned relation formula, reference symbol R 1The diameter of representing the light entrance face of first member, reference symbol R 2The diameter of representing the light-emitting face of first member, and reference character H is represented the height of first member.
Can be set at value in 3 to 1,000 the typical range with assembling quantity with the luminescent device that forms pixel or sub-pixel.The cross sectional shape that it should be noted that the inclined plane of round platform can be combination or the curve of straight line, many line segments.In addition, can expect to satisfy following relational expression:
0.5≤R 0/R 1≤1.0。
In the above-mentioned relation formula, reference symbol R 0The diameter of expression illuminating part.
The most important thing is that in the display device with aforesaid desirable configuration according to disclosure execution mode, the material that is used for making first member can be Si 1-xN x, the ITO(indium tin oxide), the IZO(indium-zinc oxide), TiO 2, Nb 2O 5, contain the Br(bromine) polymer, contain S(sulphur) polymer, contain titanium polymer or contain zirconium polymer etc.On the other hand, can be SiO for the material of making second member 2, MgF, LiF, polyimide resin, acrylic resin, fluorine resin, silicones, fluorine based polymer or silicon based polymer etc.
Provide to comprise that by the disclosure the required enforcement of above elaboration and the display device of required configuration etc. also can be called as the present disclosed display device that is used as for the current techique term of display device hereinafter.This display device also can be included in the enforcement that makes up second electrode and make up second electrode between first and second member between first and second member or the organic layer.In this case, on the interface between second member and second electrode or on the interface between second member and the organic layer, reflections propagate is crossed at least a portion of the light of first member.These enforcements are also included within wherein in the reflections propagate on the surface of first member of second member and cross in this enforcement of at least a portion of light of first member.
In present disclosed display device, pixel or sub-pixel can be disposed by a luminescent device.Yet enforcement of the present disclosure never is limited to pixel or sub-pixel by the execution mode of a luminescent device configuration.In this case, pixel or sub-pixel can be by layout for forming strip array, diagonal angle array, triarray or rectangular array etc.In addition, enforcement of the present disclosure never is limited to pixel or sub-pixel by the execution mode of the luminescent device configuration of a plurality of gatherings.In this case, pixel or sub-pixel can be by layout for forming the strip array.
In the following description, for simplicity, second electrode in first electrode in the display device of top emission type and the display device of bottom-emission type is also referred to as reflective electrode in some cases.Reflective electrode is by making as the material of reflectorized material.Adopt the reflective electrode as anode, this reflective electrode is made by metal or alloy.Metal and alloy have higher work function value.The representative instance of this metal is platinum (Pt), gold (Au), silver (Ag), chromium (Cr), tungsten (W), nickel (Ni), copper (Cu), iron (Fe), cobalt (Co) and tantalum (Ta) etc., and the representative instance of alloy is Ag-Pd-Cu alloy and Al-Pd alloy.The Ag-Pd-Cu alloy comprises the silver (Ag) as main component, the copper (Cu) that has the palladium (Pd) of the quality in the 0.3%-1% scope and have the quality in the 0.3%-1% scope.In addition, material can be aluminium (Al) or the alloy that comprises aluminium (Al).In this case, if the value of the work function of aluminium (Al) or comprise that the less and material of the value of work function of alloy of aluminium (Al) etc. has higher light reflectivity, then can improve the hole injection properties by suitable hole injection layer is set usually.By improving the hole injection properties, reflective electrode can be used as anode.Reflective electrode can have the typical thickness in 0.1 μ m to 1 mu m range.Substitute as a kind of, can also adopt the transparent conductive material that has good hole injection properties respectively to be set to form the structure of piling up at the dielectric multilayer film with good light reflection characteristic or reflective membrane.The representative instance of this reflective membrane is aluminium (Al), and the representative instance of this transparent conductive material is the ITO(indium tin oxide) and the IZO(indium-zinc oxide).On the other hand, adopt the reflective electrode as negative electrode, can expect that reflective electrode made by the electric conducting material with less work function value and high light reflectivity.Yet if by the electric conducting material that has the material of high light reflectivity in the conduct for the manufacture of anode suitable electron injecting layer being set improves Electron Injection Characteristics usually, reflective electrode also can be used as negative electrode.
In the following description, for simplicity, first electrode in second electrode in the display device of top emission type and the display device of bottom-emission type is also referred to as semi-transparent formula electrode in some cases.The material that is used for the semi-transparent formula electrode of making can be semi-transparent formula material or Nonopaque type material.Adopt the semi-transparent formula electrode as negative electrode, can expect for the material of making semi-transparent formula electrode it is to transmit the light that sends and the electric conducting material with less work function value, make electronics can inject organic layer highly effectively.The representative instance of this material is metal and the alloy with less work function value.Representative instance with metal of less work function value is aluminium (Al), silver (Ag), magnesium (Mg), calcium (Ca), sodium (Na) and strontium (Sr) etc.On the other hand, the representative instance with alloy of less work function value is the alloy of alloy, aluminium (Al) and lithium (Li) of alloy, the magnesium (Mg) of alkali metal or alkaline-earth metal and silver (Ag).The representative instance of the alloy of alkali metal or alkaline-earth metal and silver (Ag) is the Mg-Ag alloy, and it is the alloy of magnesium (Mg) and silver (Ag), and the representative instance of the alloy of magnesium (Mg) is the Mg-Ca alloy.On the other hand, the alloy of aluminium (Al) and lithium (Li) is called as the Al-Li alloy.Among metal and alloy, the Mg-Ag alloy is the most desirable.In this alloy, can be with the Mg:Ag of volume and the ratio of the volume of silver of expression magnesium than the representative value that is set in 5:1 to the 30:1 scope.On the other hand, under the situation of Mg-Ca alloy, can be with the Mg:Ca of volume and the ratio of the volume of calcium of expression magnesium than the representative value that is set in 2:1 to the 10:1 scope.Can be the representative value in 4nm to the 50nm scope with the thickness setting of semi-transparent formula electrode, but but the more value in the value in 4nm to the 20nm scope or 6nm to the 12nm scope.Substitute as a kind of, semi-transparent formula electrode also can be designed to comprise the material layer of previous elaboration and the laminated construction of so-called transparency electrode, and material layer and transparency electrode begin order from the organic layer side and arrange.Usually made by ITO or IZO, transparency electrode has 3 * 10 -8M to 1 * 10 -6Typical thickness in the m scope.If semi-transparent formula electrode is designed to this laminated construction, then the thickness of the material layer of before having set forth can be reduced to the value in 1nm to the 4nm scope.In addition, semi-transparent formula electrode also can only be disposed by transparency electrode.Substitute as a kind of, can be the setting of semi-transparent formula electrode as the bus electrode of auxiliary electrode.By making bus electrode by the material with small resistor, can reduce the resistance of whole semi-transparent formula electrode.Representative instance with material of small resistor is aluminium, aluminium alloy, silver, silver alloy, copper, copper alloy, gold and billon etc.On the other hand, if, then can expecting the light that semi-transparent formula electrode is sent by transmission and the material with bigger work function value as anode, makes at semi-transparent formula electrode.
The method that is used for structure first and second electrodes can be that evaporation is (such as electron-beam vapor deposition method usually, heater strip evaporation or vacuum vapor deposition method, sputtering method, chemical vacuum deposit (CVD) method, mocvd method, the combination of ion plating method and etching method, multiple print process is (such as silk screen print method, ink-jet printing process and metal mask print process) in any, coating (plating) method is (such as galvanoplastic or electroless plating method, peel off method, laser grinding method or sol-gel process) etc.By adopting a kind of in a kind of or coating process in the print process, can directly make up first and second electrodes that have required form or required pattern respectively.It should be noted that after making up organic layer to be to make up first and second electrodes, especially recommend into embrane method, because become embrane method can prevent that organic layer is damaged.In this case, film structure method can be to utilize into vacuum vapor deposition method or the mocvd method of the little energy of membrane granule.This is because if organic layer is damaged, then worry to construct not light emitting pixel or not luminous sub-pixel.Light emitting pixel and not luminous sub-pixel are not luminous, because leakage current can flow because of the organic layer that damages.Light emitting pixel and not luminous sub-pixel are not called as end point respectively.In addition, under the situation that technology is not exposed to atmosphere, can carry out this fact of series of process and can expect, be damaged by the moisture in the atmosphere because can prevent organic layer.In this case, the technology of processing range from the technology that makes up organic layer to the electrode that makes up organic layer.In some cases, can remove patterned process in one the technology from make up first and second electrodes.
In the display device that is provided by the disclosure, make up a plurality of luminescent devices at first substrate.In this case, first or second substrate can be high distortion point glass substrate, soda glass (Na 2OCaOSiO 2) substrate, Pyrex (Na 2OB 2O 3SiO 2) substrate, forsterite (2MgOSiO 2) substrate, lead glass (Na 2OPbOSiO 2) substrate, have in its surface various glass substrates, the quartz base plate of the dielectric film that forms, the quartz base plate with the dielectric film that forms in its surface, the silicon substrate with the dielectric film that forms in its surface or an organic polymer substrate etc. respectively.The representative instance of organic polymer substrate is polymethyl methacrylate base plate (being also referred to as polymethyl methacrylate acid (PMMA) substrate), polyvinyl alcohol (PVA) substrate, polyethylene phenol (PVP) substrate, polyether sulfone (PES) substrate, polyimide substrate, polycarbonate substrate and polyethylene terephthalate (PET) substrate etc.Organic polymer is that plastic film, plastic tab and plastic base are configured to show flammable characteristic by macromolecular material for the form of the macromolecular material of making plastic film, plastic tab or plastic base.The material that is used for making first substrate can be identical or different with the material that is used for making second substrate.Yet under the situation of the display device with bottom-emission type, needing can be saturating to the light that is sent by luminescent device for the material of making first substrate.
The representative instance that the display device that is provided by the disclosure is provided organic EL display apparatus (being also referred to as organic electro-luminescence display device) provides.If organic EL display apparatus is the color organic EL display device, as previously mentioned, then each sub-pixel disposes by one in the organic EL device that forms organic el device.In this case, a pixel generally includes three different subpixel, and these three different subpixel are normally for sending the emitting red light sub-pixel with red light, the blue-light-emitting sub-pixel that is used for sending the green emitting sub-pixel of the light with green and is used for sending the light with blueness.Therefore, in this configuration, be N * M if form the quantity of the organic EL device of organic el device, then the quantity of pixel is (N * M)/3.Organic EL display apparatus can be used as the display device that embeds in personal computer, TV receiver, mobile phone, PDA(Personal Digital Assistant), the game machine etc. usually.Substitute as a kind of, can in electronic viewfinder (EVF) and head mounted display (HMD), use organic EL display apparatus.Another representative instance of the display device that is provided by the disclosure is to comprise for the backlight of liquid crystal display and be used for the lighting apparatus of the planar light source of liquid crystal display.
Organic layer comprises the luminescent layer of being made by luminous organic material usually.Particularly, organic layer usually can be by the laminated construction that comprises hole transporting layer, luminescent layer and electron supplying layer, comprise hole transporting layer and equally as the laminated construction of the luminescent layer of electron supplying layer and comprise that the laminated construction of hole injection layer, hole transporting layer, luminescent layer, electron supplying layer and electron injecting layer disposes.In these laminated construction each is called as series unit.In this case, think that organic layer has the two-stage series connection structure of first series unit, articulamentum and second series unit that comprise that formation is piled up.In fact, organic layer can be configured to by forming the plural serial stage structure that the series unit more than three that piles up constitutes.In these cases, radiative color becomes redness, green or blue at series unit, sends the organic layer of white light so that integral body to be provided.The representative instance that is used for the method for structure organic layer is physical vapor deposition (PVD) method (such as vacuum vapor deposition method), print process (such as silk screen print method or ink-jet printing process), laser transmission method and various rubbing method.The laser transmission method is the method for the transmission organic layer.According to the laser transmission method, laser beam shone comprise laser absorption layer and organic layer laminated construction so that organic layer and laser absorption layer are separated, laser absorption layer and organic layer are structured on the transmission base plate.If by adopting vacuum vapor deposition method to make up organic layer, for example, then the material of deposit by being arranged on the hole on the so-called metal mask that adopts in the vacuum vapor deposition method is to obtain organic layer.Substitute as a kind of, carry out making up organic layer on whole surface under the situation of Patternized technique need not.
In the display device of top emission type, first electrode is arranged on the interlayer insulating film usually.In addition, this interlayer insulating film covers the luminescent device drive division that makes up on first substrate.The luminescent device drive division is configured to comprise a thin-film transistor (TFT) or a plurality of TFT.TFT and first electrode are electrically connected to each other by the contact plug that is arranged on the interlayer insulating film.The representative instance that is used for the material of making interlayer insulating film is SiO 2, BPSG, PSG, BSG, AsSg, PbSg, SiON, spin-on glasses layer (SOG), have low-melting glass, be called as the SiO of glass paste 2Based material, SiN based material and various dielectric resin material.Resin-insulated material comprises that polyimide resin, novolaks are resin, acrylic resin and polybenzoxazoles resin.If interlayer insulating film is made by insulating resin, then can use single insulating resin material self or the multiple dielectric resin material of appropriate combination to produce the material that is used for making interlayer insulating film.Can make up interlayer insulating film by carrying out processes well known (adopt usually in CVD method, rubbing method, sputtering method or the various print process any).
In having the bottom-emission type display device of light by the configuration/structure of interlayer insulating film that is sent by luminescent device, need interlayer insulating film by the permeable material of the light that is sent by luminescent device is made.In addition, also need not make up the luminescent device drive division so that the luminescent device drive division does not stop this mode of the light that is sent by luminescent device.In the display device with bottom-emission type, the luminescent device drive division can be arranged on second electrode top.
As previously mentioned, can expect that insulation or conductive protective film are arranged on the organic layer top and avoid moisture harm with the protection organic layer.Also expect to utilize especially little one-tenth membrane granule energy to form diaphragm by adopting film to make up method, as adopting vacuum vapor deposition method or adopting film to make up the situation of method (such as CVD method or mocvd method).This is because by forming diaphragm in this way, can reduce the influence to basal layer.Substitute as a kind of, can expect for preventing that brightness owing to the deterioration of organic layer reduces, is set at normal temperature with film-forming temperature, and for preventing that diaphragm from coming off, under the condition that minimizes diaphragm stress, form diaphragm.In addition, expect that also not being exposed to atmosphere by the electrode that will make up forms diaphragm.By forming diaphragm in this way, can prevent organic layer because the moisture in the atmosphere and/or the oxygen in the atmosphere and deterioration.The most important thing is, also can be desirably under the situation of the display device with top emission type that diaphragm is formed by the material that sees through the light that is generated by organic layer with at least 80% light transmittance.Particularly, can expect that diaphragm is formed by the insulating material with inorganic amorphous characteristic.Hereinafter will provide the representative instance of this insulating material.Do not generate particle owing to have the insulating material of inorganic amorphous characteristic, so the water penetration of material is lower and this material can be used for making the excellent protection film.Particularly, can expect for the material of making diaphragm it is to see through the light that is sent by luminescent layer but stop the material of moisture perfectly.Particularly, the representative instance of this insulating material is amorphous silicon (α-Si), noncrystalline silicon carbide (α-SiC), amorphous silicon nitride ((α-Si 1-xN x), amorphous silica (α-Si 1-yO y), amorphous carbon (α-C), amorphous silicon oxynitride (α-SiON) and AL 2O 3Deng.It should be noted that then diaphragm can be made by transparent conductive material (such as ITO and IZO) if being used for making the material of diaphragm is electric conducting material.
Obtain efficient for further improving light, the display device that is provided by the disclosure can be provided with resonator structure.Particularly, allow first interface be interface between first electrode and the organic layer, and second contact surface is the interface between second electrode and the organic layer.In this case, can provide a kind of configuration, wherein, the light resonance between first interface and second contact surface that is sent by luminescent layer, and the part of light is exported from second electrode.It should be noted that in the following description for simplicity, the A display device that is provided by the disclosure is provided this display device.In addition, allow reference symbol L 1The distance of expression from the maximum luminous position on the luminescent layer to first interface, reference symbol OL 1The expression optical distance, reference symbol L 2The distance of expression from the maximum luminous position on the luminescent layer to second contact surface, reference symbol OL 2Expression optical distance, and reference symbol m 1And m 2Represent integer respectively.In this case, the relational expression that hereinafter provides (1-1), (1-2), (1-3) and (1-4) be suitable for.
0.7{-Φ 1/(2π)+m 1}≤2×OL 1/λ≤1.2{-Φ 1/(2π)+m 1} （1-1）
0.7{-Φ 2/(2π)+m 2}≤2×OL 2/λ≤1.2{-Φ 2/(2π)+m 2} （1-2）
L 1<L 2 （1-3）
m 1<m 2 （1-4）
In the above-mentioned relation formula, use below with reference to symbol:
λ represents the expectation wavelength in the light that the peak-peak wavelength of spectrum of the light that sent by luminescent layer or expression sent by luminescent layer.
Φ 1Be illustrated in the amount of the reverberation phase shift that generates on first interface.The amount of reverberation phase shift is represented with radian and is had following-2 π＜Φ 1Value in≤0 scope.
Φ 2Be illustrated in the amount of the reverberation phase shift that generates on the second contact surface.The amount of reverberation phase shift is represented with radian and is had following-2 π＜Φ 2Value in≤0 scope.
It should be noted that the distance L from the maximum luminous position on the luminescent layer to first interface 1Be actual range or the physical distance from the maximum luminous position on the luminescent layer to first interface.By the same token, the distance L from the maximum luminous position on the luminescent layer to second contact surface 2Also be actual range or the physical distance from the maximum luminous position on the luminescent layer to second contact surface.On the other hand, optical distance OL generally is the length of the light path of being passed by by the light beam of propagating physical distance L by the medium with refractive index n, is also referred to as optical path length.Therefore, optical distance OL equals n * L(namely, OL=n * L).This equation is suitable for for following optical distance OL:
OL 1=L 1×n 0
OL 2=L 1×n 0
In above-mentioned equation, reference symbol n 0The mean refractive index of expression organic layer.By obtaining the long-pending of refractive index and the layer thickness that constitutes organic layer and and will being somebody's turn to do subsequently and calculating mean refractive index divided by the thickness of organic layer.
In the A display device that is provided by the disclosure, the average light reflectivity that can expect first electrode has and is not less than 50% value, or has ideally and be not less than 80% value.On the other hand, expect that the average light reflectivity of second electrode has the interior value of 50%-90% scope, or have the value in the 60%-90% scope ideally.Should note, be interpreted as second electrode and be interpreted as first electrode by the technical term " second electrode " that will use in the foregoing description by the technical term " first electrode " that will use in the foregoing description, the description of the B display device that provided by the disclosure can be provided foregoing description.Follow-uply will set forth the B display device that is provided by the disclosure separately.
In addition, the A display device that is provided by the disclosure can have a kind of configuration, and wherein, first electrode is made by reflectorized material, and second electrode is made by semi-transparent formula material and respectively with constant m 1And m 2Be set at 0 and 1(namely, m 1=0 and m 2=1), this provides the highest light to obtain efficient.Can find out obviously that from foregoing description the A display device that is provided by the disclosure is provided the display device that is provided by the disclosure.Can be desirably in the display device that is provided by the disclosure, the thickness of hole transporting layer or hole supplying layer approximates the thickness of electron supplying layer or electron supply layer.Substitute as a kind of, make electron supplying layer or electron supply layer supply with bed thickness than hole transporting layer or hole respectively, feasible necessary and enough electronics that can utilize lower driving voltage to be provided for raising the efficiency for luminescent layer.That is to say, by hole transporting layer is being set and by the thickness setting of hole transporting layer is the value less than the thickness of electron supplying layer, the quantity in the hole of can increasing supply as first electrode of anode and the position between the luminescent layer.In addition, in this configuration, do not occurring under the excessive or not enough situation of hole and electronics supply, can obtain to guarantee the fully a large amount of carrier balances of supplying with of charge carrier.Therefore, can obtain higher luminous efficiency.The most important thing is, because it is inexcessive or not enough with the supply electronics to supply with the hole, so can make carrier balance movable (collapsible) hardly, suppresses the driving deterioration and prolong luminescent lifetime.
As mentioned above, obtain efficient for further improving light, the display device that is provided by the disclosure can be provided with resonator structure.Particularly, allow first interface be interface between first electrode and the organic layer, and second contact surface is the interface between second electrode and the organic layer.In this case, can provide a kind of configuration, wherein, the light resonance between first interface and second contact surface that is sent by luminescent layer, and the part of light is exported from first electrode.It should be noted that in the following description for simplicity, the B display device that is provided by the disclosure is provided this display device.In addition, allow reference symbol L 1The distance of expression from the maximum luminous position on the luminescent layer to first interface, reference symbol OL 1The expression optical distance, reference symbol L 2The distance of expression from the maximum luminous position on the luminescent layer to second contact surface, reference symbol OL 2Expression optical distance, and reference symbol m 1And m 2Represent integer respectively.In this case, the relational expression that hereinafter provides (2-1), (2-2), (2-3) and (2-4) be suitable for.
0.7{-Φ 1/(2π)+m 1}≤2×OL 1/λ≤1.2{-Φ 1/(2π)+m 1} （2-1）
0.7{-Φ 2/(2π)+m 2}≤2×OL 2/λ≤1.2{-Φ 2/(2π)+m 2} （2-2）
L 1>L 2 （2-3）
m 1>m 2 （2-4）
In the above-mentioned relation formula, use below with reference to symbol:
λ represents the expectation wavelength in the light that the peak-peak wavelength of spectrum of the light that sent by luminescent layer or expression sent by luminescent layer.
Φ 1Be illustrated in the amount of the reverberation phase shift that generates on first interface.The amount of reverberation phase shift is represented with radian and is had following-2 π＜Φ 1Value in≤0 scope.
Φ 2Be illustrated in the amount of the reverberation phase shift that generates on the second contact surface.The amount of reverberation phase shift is represented with radian and is had following-2 π＜Φ 2Value in≤0 scope.
In addition, the B display device that is provided by the disclosure can have a kind of configuration, and wherein, first electrode is made by semi-transparent formula material, and second electrode is made by reflectorized material and respectively with constant m 1And m 2Be set at 1 and 0(namely, m 1=1 and m 2=0), this provides the highest light to obtain efficient.Can find out obviously that from foregoing description the B display device that is provided by the disclosure is provided the display device that is provided by the disclosure.Can be desirably in the display device that is provided by the disclosure, the thickness of hole transporting layer or hole supplying layer approximates the thickness of electron supplying layer or electron supply layer.Substitute as a kind of, make electron supplying layer or electron supply layer supply with bed thickness than hole transporting layer or hole respectively, feasible necessary and enough electronics that can utilize lower driving voltage to be provided for raising the efficiency for luminescent layer.That is to say, by hole transporting layer is being set and by the thickness setting of hole transporting layer is the value less than the thickness of electron supplying layer, the quantity in the hole of can increasing supply as second electrode of anode and the position between the luminescent layer.In addition, in this configuration, do not occurring under the excessive or not enough situation of hole and electronics supply, can obtain to guarantee the fully a large amount of carrier balances of supplying with of charge carrier.Therefore, can obtain higher luminous efficiency.The most important thing is, because it is inexcessive or not enough with the supply electronics to supply with the hole, so can make carrier balance movable hardly, suppresses the driving deterioration and prolong luminescent lifetime.
First and second electrodes absorb a part of incident light and reflect remaining light.Therefore, in reverberation, produce phase shift.Can obtain phase-shift phase Φ by calculating based on the real part of the complex refractivity index of the material of making first and second electrodes and the measured value of imaginary part 1And Φ 2The value of real part and imaginary part is usually by utilizing ellipsometer to measure.Relevant more information sees also list of references (such as " Principles of Optic, " Max Born and Emil Wolf, 1974 (Pergamon Press)).The refractive index that it should be noted that organic layer and other layers also can be measured by utilizing ellipsometer.
Can be in the display device of the A display device that is provided by the disclosure or the B display device that is provided by the disclosure what provided by the disclosure, first member be by the part configuration of rotary body.The representative instance of the part of rotary body is rotary body without a head.In this case, the rotating shaft of rotary body is as the axle of first member.Allow reference symbol z represent the axle of the rotating shaft of rotary body or first member and allow the cross sectional shape of first member obtain by cutting first member above the virtual plane that comprises the z axle.In this case, the cross sectional shape of first member is trapezoidal or the shape of a parabolical part.Substitute as a kind of, the cross sectional shape of first member also can be other shapes except the shape of trapezoidal or a parabolical part.The representative instance on the surface of rotary body is the surface of spheroid, the surface of ellipse of revolution, the surface of the paraboloid of revolution and the curved surface that obtains by the part rotation that makes curve.The representative instance of curve is multinomial line, two leaf lines, trifolium, four leaf lines, lemniscate (lemniscafe line), cochlea line, plumb line, conchoidal line, cissoid, likelihood line, tractrix, suspension line, cycloid, trochoid, astroid, three rank semi-parabolics, Lissajous curves, witch of Agnesi, epicycloid, cardioid, hypocycloid, clothoid and the helix etc. at least three rank.In addition, in some cases, can also utilize by making up many line segments or making up many line segments and many curves and rotate the surface that this combination obtains subsequently.
First execution mode
The enforcement of first execution mode perhaps more specifically, is organic EL display apparatus by the display device that the disclosure provides.In addition, first execution mode is also implemented to be provided with as for the manufacture of the first and second method execution modes according to the first and second method execution modes of the method for the display device of first execution mode by the disclosure.Fig. 1 is the illustraton of model that illustrates according to the part of the section of the display device of first execution mode, and Fig. 2 A is the sub-pixel matrix norm type figure that illustrates in the display device.In the following description, the display device according to first execution mode also abbreviates organic EL display apparatus in some cases as.Be active matrix organic EL display apparatus for color display according to the organic EL display apparatus of first execution mode.Organic EL display apparatus according to first execution mode is the display device with top emission type.That is to say that light is by the output of second electrode.
As shown in Figure 1, the organic EL display apparatus according to first execution mode or follow-up second to the 5th execution mode that will describe comprises:
(A) first substrate 11 is built with a plurality of luminescent devices 10 of the stack layer that has the illuminating part 24 that comprises first electrode 21, be configured to have the organic layer 23 that generally includes the luminescent layer of being made by luminous organic material and second electrode 22 respectively at first substrate 11; And
(B) be arranged on second substrate 34 of second electrode, 22 tops.
In the following description, luminescent device 10 is also referred to as organic EL device.The luminescent device 10 that adopts in the organic EL display apparatus according to first execution mode or follow-up second to the 4th execution mode that will describe comprises:
(a) first electrode 21;
(b) has its bottom-exposed in second member 52 in the aperture 25 of first electrode 21;
(c) organic layer 23, and it places the part top of first electrode 21 of the bottom that is exposed to aperture 25 also to be provided with the luminescent layer of being made by luminous organic material usually at least; And
(d) be structured in second electrode 22 on the organic layer 23.
In addition, first substrate 11 that adopts in the organic EL display apparatus according to first execution mode or follow-up second to the 5th execution mode that will describe has reflector layer 50, and this reflector layer 50 comprises:
First member 51 be used for to be propagated the light that sent by luminescent device 10 and is exported light to outside; And
Fill second member 52 in the space between adjacent first member 51.
Organic EL display apparatus according to first execution mode or follow-up the second, the 4th and the 5th execution mode that will describe is the high definition display device that is applicable to electronic viewfinder (EVF) or head mounted display (HMD).On the other hand, be the large scale organic EL display apparatus that has greater than according to the size of the organic EL display apparatus of first execution mode or second, the 4th and the 5th execution mode according to the organic EL display apparatus of the 3rd execution mode.Usually, the organic EL display apparatus according to the 3rd execution mode is applicable to television receiver.
In addition, a pixel is configured to comprise three sub-pixels.Three sub-pixels are be used to sending the emitting red light sub-pixel with red light, the blue-light-emitting sub-pixel that is used for sending the green emitting sub-pixel of the light with green and is used for sending the light with blueness.The most important thing is that second substrate 34 is provided with colour filter 33, and luminescent device 10 sends the light with white.In this case, the colorful light-emitting sub-pixel is by the combination configuration of the luminescent device 10 that sends the light with white and colour filter 33.Colour filter 33 is by sending zone with red light, sending the zone with green light or send the zone with blue light and dispose.Yet the configuration of colour filter 33 never is limited to this structure.For example, can adopt the two-stage series connection structure of two series units that comprise that formation is piled up.In this case, whole organic layer 23 has the structure of sending the light with white.Series unit is usually by comprising that hole transporting layer and the same laminated construction that is used as the luminescent layer of electron supplying layer dispose.In addition, the film that is in the light that is called as black matrix" can also be set between adjacent colour filter 33.If the quantity of pixel is 2,048 * 1,236 and luminescent devices 10 form a sub-pixel, and then the quantity of luminescent device 10 is three times of pixel quantity.In the organic EL display apparatus according to first execution mode or follow-up the second, the 4th and the 5th execution mode that will describe, shown in Fig. 2 A, the array of sub-pixel is pseudo-triarray, and wherein, the size of the pixel that is surrounded by solid line is 5 μ m * 5 μ m.It should be noted that Fig. 2 A shows four pixels.In Fig. 2 A and Fig. 2 B, reference symbol R, G and B represent emitting red light sub-pixel, green emitting sub-pixel and blue-light-emitting sub-pixel respectively.In this configuration, luminescent device 10 and first member 51 are contacted with each other.Particularly, second electrode 22 and first member 51 are in direct contact with one another.
In addition, first member 51 is built as the shape with the round platform (or rotary body without a head) that satisfies following relational expression:
0.5≤R 1/ R 2≤ 0.8 and
0.5≤H/R 1≤2.0。
In the above-mentioned relation formula, reference symbol R 1The diameter of representing the light entrance face of first member 51, reference symbol R 2The diameter of representing the light-emitting face of first member 51, and reference character H is represented the height of first member 51.In the first embodiment, the light entrance face of first member 51 is the faces that are exposed to first substrate 11, and the light-emitting face of first member 51 is the faces that are exposed to second substrate 34.Shown in the value table 1 hereinafter of these symbols.
The cross sectional shape that it should be noted that the inclined plane of first member 51 is straight line, and this inclined plane is round platform.In addition, the cross sectional shape of round platform is the shape by the cross section that obtains of cutting round platform above the virtual plane of the axis that comprises round platform.The cross sectional shape of round platform (that is the cross sectional shape of first member 51) is trapezoidal.
In the organic EL display apparatus according to first execution mode or follow-up second, third and the 4th execution mode that will describe, first electrode 21 is as anode, and second electrode 22 is as negative electrode.First electrode 21 is made by reflectorized material.Particularly, first electrode 21 is made by the Al-Nd alloy.On the other hand, second electrode 22 is made by semi-transparent formula material.Particularly, second electrode 22 is made by the electric conducting material that comprises magnesium (Mg).More specifically, second electrode 22 is made by the Mg-Ag alloy with 10nm thickness.Make up first electrode 21 by the combination of adopting vacuum vapor deposition method and etching method.On the other hand, the one-tenth embrane method that has an energy of especially little one-tenth membrane granule by employing makes up second electrode 22.The representative instance of one-tenth embrane method with energy of especially little one-tenth membrane granule is vacuum vapor deposition method.Need not to carry out to make up second electrode 22 under the situation of Patternized technique.The result of the refractive index of measuring first electrode 21 and second electrode 22 has been shown in the table 2.Wavelength to 530nm is measured.On the other hand, the result who measures the light reflectivity of first electrode 21 and second electrode 22 provides as follows.
The light reflectivity of first electrode 21 is 85%.
The light reflectivity of second electrode 22 is 57%.
In the organic EL display apparatus according to first execution mode or follow-up second to the 5th execution mode that will describe, first electrode 21 of organic EL device is arranged on by SiON and makes and by adopting on the interlayer insulating film 16 that the CVD method makes up.Particularly, first electrode 21 is arranged on the interlayer insulating film 16B on upper strata.Interlayer insulating film 16 covers the organic EL device drive division that makes up on first substrate 11.The organic EL device drive division is configured to adopt a plurality of TFT.These TFT are by being arranged on interlayer insulating film 16(or strictly speaking, the interlayer insulating film 16B on upper strata) on contact plug 18, lead 17 and contact plug 17A be electrically connected with first electrode 21 respectively.It should be noted that Fig. 1 shows a TFT at each organic EL device drive division.This TFT comprises that gate electrode 12, gate insulating film 13, source electrode and drain region 14 and raceway groove make up district 15.Make up gate electrode 12 at first substrate 11.Make up gate insulating film 13 at first substrate 11 and gate electrode 12.At the semiconductor layer that is structured on the gate insulating film 13 source electrode and drain region 14 are set.Between source electrode and drain region 14, make up raceway groove and make up district 15.It is corresponding with the semiconductor layer part that is positioned at gate electrode 12 tops that raceway groove makes up district 15.In the Typical Disposition shown in the figure, TFT is configured to the bottom gate type transistor.Yet, it should be noted that also TFT to be configured to the top gate type transistor.The gate electrode 12 of TFT is connected with not shown scanning circuit.
In the organic EL display apparatus according to first execution mode or follow-up the second, the 4th and the 5th execution mode that will describe, first substrate 11 is by the silicon substrate configuration, and second substrate is made by alkali-free glass or quartz glass.On the other hand, under follow-up the 3rd execution mode that will describe and the follow-up also situation with the execution mode 4A to 4D that describes, first substrate 11 and second substrate are made by alkali-free glass or quartz glass.
In addition, in the organic EL display apparatus according to first execution mode or follow-up second to the 5th execution mode that will describe, first member 51 is by Si 1-xN xMake, and second member 52 is by SiO 2Make.The refractive index n of first member 51 1Refractive index n with second member 52 2Satisfy following relational expression.
1.1≤n 1≤1.8
(n 1-n 2)≥0.20。
In addition, second member 52 on the surface of first member 51, namely on the interface between first member 51 and second member 52, reflections propagate is crossed at least a portion of the light of first member 51.More specifically, owing between first member 51 and second member 52, made up organic layer 23 and second electrode 22, so reflections propagate is crossed at least a portion of the light of first member 51 on the interface between second member 52 and the organic layer 23.In this case, the surface towards first member 51 of second member 52 is corresponding with light-reflecting portion (reflector) 53.It should be noted that for simplicity this structure is called as the anode reflector structure in the following description.
The most important thing is that in the organic EL display apparatus according to first execution mode or follow-up second to the 4th execution mode that will describe, diaphragm 31 and sealing material layer 32 further are arranged on the reflector layer 50.Diaphragm 31 is by Si 1-yN yMake, and sealing material layer 32 is made by epoxy resin.The refractive index n of diaphragm 31 3Refractive index n with sealing material layer 32 4Satisfy following relational expression:
|n 3–n 4|≤0.3
And shown in the table 2 hereinafter.
Make up diaphragm 31 by using plasma CVD method and arrive organic layer 23 in order to prevent moisture.It should be noted that also to make up first member 51 and diaphragm 31 simultaneously, win member 51 and diaphragm 31 can be integrated in the monomer structure.In addition, in configuration shown in Figure 1, the end face of first member 51 is set at the level identical with the end face of second electrode 22 on second member 52.Yet first member 51 can cover second electrode 22 on second member 52.That is to say that first member 51 can cover whole surface.
Table 1
Figure BDA00002833230600211
Table 2
Real part Imaginary part
The refractive index of first electrode 21 0.755 5.466
The refractive index of second electrode 22 0.617 3.904
The refractive index of organic layer 23 n 0 1.85 0
By Si 1-yN yThe refractive index of first member of making 51 n 1 1.81 0
By SiO 2The refractive index of second member of making 52 n 2 1.46 0
By Si 1-yN yThe refractive index of the diaphragm of making 31 n 3 1.81 0
The refractive index of sealing material layer 32 n 4 1.65 0
Fig. 3 is the schematic diagram of the curve of the analog result that expression typical case contrast display device 1 is shown, distributes according to the radiation angle of the display device of first execution mode and the brightness in typical case's contrast display device 1 '.Typical case's contrast display device 1 is the display device that is used as the Al film of reflector layer at (namely on the interface between first member and second member) structure on the surface of first member of second member.Be that to have be the configuration of first execution mode design and the organic EL display apparatus of structure according to the display device of first execution mode.In this display device according to first execution mode, equation (n 1– n 2)=0.20 is suitable for.Typical case contrast display device 1 ' is to have and organic EL display apparatus according to the identical configuration of the organic EL display apparatus of first execution mode and identical structure, except making up SiO 2Layer replaces outside the reflector layer 50.
The transverse axis that it should be noted that Fig. 3 is represented the angle of visual field that expenditure is represented, and vertical pivot is represented the brightness relative value, and this brightness relative value is that the brightness settings by will contrasting the 0 degree angle of visual field of display device 1 ' at the typical case is 1 and normalized value.Fig. 3 is not shown according to the organic EL display apparatus of first execution mode and the difference that distributes as the radiation angle of the brightness between the organic EL display apparatus of typical case's contrast display device 1.As mentioned above, having according to the display device of first execution mode is configuration and the structure of the design of first execution mode, and satisfies equation (n 1-n 2)=0.20.On the other hand, contrast in the display device 1 the typical case, make up the Al film as reflector layer on the surface towards first member of second member.In other words, if satisfy equation (n 1– n 2) 〉=0.20, then can obtain to contrast the identical brightness of display device 1 with the typical case increases effect, wherein, makes up the Al film as reflector layer on the surface towards first member of second member.
Next, by reference Fig. 9 A to Fig. 9 F, below describe the manufacture method according to the first method execution mode of the present disclosure is carried out general description.Be for the manufacture of the method according to the organic EL display apparatus of first execution mode according to the manufacture method of the first method execution mode.
Technology 100
At first, by adopting well-known method to make up TFT at first substrate 11 for each sub-pixel.TFT comprises that gate electrode 12, gate insulating film 13, source electrode and drain region 14 and raceway groove make up district 15.Make up gate electrode 12 at first substrate 11.Make up gate insulating film 13 at first substrate 11 and gate electrode 12.At the semiconductor layer that is structured on the gate insulating film 13 source electrode and drain region 14 are set.Between source electrode and drain region 14, make up raceway groove and make up district 15.It is corresponding with the semiconductor layer part that is positioned at gate electrode 12 tops that raceway groove makes up district 15.In the Typical Disposition shown in the figure, TFT is configured to the bottom gate type transistor.Yet, it should be noted that also TFT to be configured to the top gate type transistor.The gate electrode 12 of TFT is connected with not shown scanning circuit.Subsequently, on first substrate 11, will be by SiO by adopting the CVD method 2The interlayer insulating film 16A of the lower floor of making is configured to and covers TFT.After having made up the interlayer insulating film 16A of lower floor, make up aperture 16 ' based on photoetching technique and lithographic technique at the interlayer insulating film 16A of lower floor.The more information of relevant this technology please refer to Fig. 9 A.
Technology 110
Subsequently, go up structure lead 17 made of aluminum by the interlayer insulating film 16A that is combined in lower floor that adopts vacuum vapor deposition method and etching method.It should be noted that lead 17 is electrically connected with source electrode and the drain region 14 of TFT by being arranged on aperture 16 ' inboard contact plug 17A.Lead 17 also is electrically connected with not shown signal supply circuit.Subsequently, by adopting the CVD method to make up by SiO on whole surface 2The interlayer insulating film 16B on the upper strata of making.Subsequently, the interlayer insulating film 16B on the upper strata makes up aperture 18 ' based on photoetching technique and lithographic technique.The more information of relevant this technology please refer to Fig. 9 B.
Technology 120
Afterwards, go up first electrode 21 that structure is made by the Al-Nd alloy by the interlayer insulating film 16B that is combined in the upper strata that adopts vacuum vapor deposition method and etching method.The more information of relevant this technology please refer to Fig. 9 C.It should be noted that first electrode 21 is electrically connected with lead 17 by being arranged on aperture 18 ' inboard contact plug 18.
Technology 130
Subsequently, make up second member 52.Particularly, by adopting the CVD method to make up by SiO on whole surface 2The second member configuration layer 52A that makes, and subsequently, make up anticorrosive additive material layer 52B at the second member configuration layer 52A.Subsequently, make the exposure of anticorrosive additive material layer 52B experience and developing process to make up aperture 52C at anticorrosive additive material layer 52B.For illustrating, please refer to Fig. 9 D.Subsequently, by adopting the RIE method to come etching anticorrosive additive material layer 52B and the second member configuration layer 52A to give the second member configuration layer 52A taper, shown in Fig. 9 E.At last, can obtain to share with aperture 25 second member 52 of sloped sidewall, shown in Fig. 9 F.It should be noted that by the control etching condition, can be the second member configuration layer 52A and give taper.Yet the method that is used for structure second member 52 never is limited to this method.For example, on whole surface, make up by SiO 2Or after the second member configuration layer made of polyimide resin, second member 52 shown in Fig. 9 F also can make up based on photoetching technique and wet etching technique.
Technology 140
Subsequently, second member 52 of the part on a part that comprises first electrode 21 that is exposed to 25 bottoms, aperture makes up organic layer 23.That is to say, make up organic layer 23 on whole surface.It should be noted that organic layer 23 is usually the stack layers by making up hole transporting layer successively and also constructing as the luminescent layer of the electron supplying layer that is formed by organic material.By being carried out vacuum deposition processes, organic material can obtain organic layer 23 based on resistance heating.
Technology 150
Afterwards, make up second electrode 22 on the whole surface of viewing area.Second electrode 22 covers the whole surface of the organic layer 23 that forms N * M organic electroluminescence pixel.Second electrode 22 is by second member 52 and organic layer 23 and 21 insulation of first electrode.By adopting vacuum deposition method to make up second electrode 22, this vacuum deposition method is into the very little so that one-tenth embrane method that can not exert an influence to organic layer 23 of the energy of membrane granule.In addition, just in the vacuum evaporation apparatus identical with organic layer 23, make up organic layer 23 after, make up second electrode 22, and organic layer 23 be not exposed in the atmosphere.Therefore, can prevent moisture and the oxygen deterioration of organic layer 23 because containing in the atmosphere.Particularly, by being made common steaming film by the Mg-Ag alloy with volume ratio 10:1 and forming the common steaming film with thickness 10nm, can obtain second electrode 22.
Technology 160
Subsequently, before flattening process, make up by Si on whole surface 1-xN xFirst member 51 that (silicon nitride) made.Particularly, make up first member 51 at second electrode 22.Therefore, can obtain reflector layer 50 by first member 51 and second member 52.In this way, can obtain the anode reflector structure.
Technology 170
Afterwards, by adopting vacuum vapor deposition method to make up by Si at reflector layer 50 1-yN yThe insulating protective film 31 that (silicon nitride) made.It should be noted that also to make up first member 51 and diaphragm 31 simultaneously, win member 51 and diaphragm 31 can be integrated in the monomer structure.In this structure, because the effect in aperture 25 can make up recess at the end face of diaphragm 31 in some cases.Yet, as previously mentioned, poor by stipulating this | n 3– n 4|, can effectively prevent from being scattered in recess by the light of luminescent device 10 outputs.
Technology 180
Subsequently, by utilizing sealing material layer 32, second substrate 34 that wherein is built with colour filter 33 is adhered on first substrate 11 that wherein is built with diaphragm 31.At last, by setting and being connected of external circuit, can finish the manufacturing of organic EL display apparatus.
Substitute as a kind of, also can make up reflector layer by adopting the manufacture method according to the second method execution mode of the present disclosure.Be method for the manufacture of organic EL display apparatus according to the manufacture method of the second method execution mode.Next, by reference Figure 10 A to Figure 10 D, below describe being provided by the disclosure with as setting forth for the manufacture of the second method execution mode of the method for the organic EL display apparatus method of reflector layer 50 (perhaps more specifically, for the manufacture of).
Technology 100A
At first, preparation has the stamping die 60 with the shape of first member, 51 complementations.Particularly, by adopting well-known technology to make up to have the stamping die (mother) 60 with the shape of first member, 51 complementations.Well-known technology is galvanoplastics, lithographic technique or another cutting technique normally.
Technology 110A
Simultaneously, supporting substrate is coated with resin material.Particularly, shown in Figure 10 A, for example, ultraviolet hardening resin material 62 is coated on the transparent glass substrate 61 as supporting substrate.That is to say, make up resin material 62 at glass substrate 61.
Technology 120A
Subsequently, by utilizing after stamping die 60 formed resin material 62, remove stamping die 60 to obtain to have the resin material layer 63 of protuberance 64.Particularly, employing is in the stamping die 60 under the state that is resisted against on the resin material 62, energy beam (or more specifically, ultraviolet ray) shines resin material 62 with hardening resin material 62 and obtains resin material layer 63 from the side as the glass substrate 61 of supporting substrate.After having obtained resin material layer 63, shown in Figure 10 B, remove stamping die 60.In this way, can obtain to have the resin material layer 63 of protuberance 64, shown in Figure 10 C.The protuberance 64 of resin material layer 63 is corresponding with first member 51 respectively.
Technology 130A
Afterwards, smooth processing is carried out on the top of the protuberance 64 of resin material layer 63.Subsequently, utilize the space between the protuberance 64 of adhesive phase 65 potting resin material layers 63, shown in Figure 10 D.
Technology 140A
Subsequently, make resin material layer 63 from coming off as the glass substrate 61 of supporting substrate and being installed on first substrate 11 that has made up luminescent device etc.That is to say that adhesive phase 65 is arranged on second electrode 22, make adhesive phase 65 can't stop from the light of luminescent device 10 outputs.In this way, adhesive phase 65 can be used as adhesive.
It should be noted that and to obtain first substrate 11 by after technology 100-120, carrying out technology in the mode identical with the technology 140 that makes up organic layer 23 and second electrode 22 at the interlayer insulating film 16B on first electrode 21 and upper strata and 150.In this way, can obtain to comprise the adhesive phase 65 that is used as second member 52 and the reflector layer 50 that is used as the resin material layer 63 of first member 51.That is to say, can obtain the anode reflector structure.
Technology 150A
Afterwards, make up insulating protective film 31 by using plasma CVD method at reflector layer 50.Subsequently, by utilizing sealing material layer 32, second substrate 34 that is built with colour filter 33 is adhered on first substrate 11 that is built with diaphragm 31.At last, by setting and being connected of external circuit, can finish the manufacturing of organic EL display apparatus.It should be noted that and also can use thermosetting resin material or thermoplastic resin material to replace ultraviolet hardening resin material 62.
Under the situation according to the organic EL display apparatus of first execution mode, stipulate the refractive index value n of first member 51 in advance 1Refractive index value n with first member 51 1Refractive index value n with second member 52 2Between poor.Therefore, second member 52 on the surface of first member 51, namely on the interface between first member 51 and second member 52, reflections propagate is crossed at least a portion of the light of first member 51 reliably, and even need not to arrange reflective member etc.In addition, can prevent reliably that also the light that is sent by luminescent device 10 from being reflected by first member 51 fully.That is to say, because luminescent device 10 and first member 51 are contacted with each other, perhaps particularly, because second electrode 22 and first member 51 are in direct contact with one another, the light that can prevent from reliably being sent by luminescent device 10 is fully by 51 reflections of first member.Therefore, will export the outside to by the light that luminescent device 10 sends with can having no to lose.In addition, can realize all purposes, comprise 1/2 times the value of drive current density being down to the value that is not more than existing organic EL display apparatus, luminous efficiency is brought up to the value of the twice of the value that is not less than existing organic EL display apparatus, and blend color is not more than 3% value than being down to.
The organic EL display apparatus of Huo Deing is according to the display device of first execution mode or comprises following display device as mentioned above:
(A) first substrate 11 is built with a plurality of luminescent devices 10 of the stack layer that has the illuminating part 24 that comprises first electrode 21, be configured to have the organic layer 23 that generally includes the luminescent layer of being made by luminous organic material and second electrode 22 respectively at described first substrate 11; And
(B) be arranged on second substrate 34 of second electrode, 22 tops, wherein,
First substrate 11 has reflector layer 50, and this reflector layer 50 comprises:
Be arranged on the luminescent device 10 and be used for propagating the light that sent by luminescent device 10 and export light to outside first member 51, and
Fill second member 52 in the space between adjacent first member 51, and
Propagated first member 51 light at least a portion second member 52 on the surface of first member 51, namely the interface between first member 51 and second member 52 is reflected.
Second execution mode
Second execution mode is the revision of first execution mode.Table 1 shows according to the organic EL display apparatus of second execution mode and has the structured data of the organic EL display apparatus that is the configuration of first execution mode design and structure.This structured data comprises the diameter R of the light entrance face of first member 51 1, first member 51 the diameter R of light-emitting face 2, first member 51 the angle of gradient θ, the thickness of diaphragm 31, the thickness of sealing material layer 32, the thickness of colour filter 33, the diameter R of illuminating part 24 on inclined plane of truncated cone-shaped of height H, first member 51 0(perhaps particularly, the diameter of first electrode 21), illuminating part make up spacing (its for from the center of any concrete illuminating part 24 to the distance at the center of the illuminating part 24 adjacent with this concrete illuminating part 24) and aperture to be compared etc.
As described above, the organic EL display apparatus according to second execution mode is the high definition display device that expectation is applicable to electronic viewfinder (EVF) or head mounted display (HMD).In addition, except arranging by SiO 2The layer of making replaces outside this fact of reflector layer 50, typical case contrast display device 2 be have with according to the configuration of the organic EL display apparatus of second execution mode configuration identical with structure and the organic EL display apparatus of structure.
In addition, simulated to obtain about distributing according to the organic EL display apparatus of second execution mode and the radiation angle of the brightness of typical case's contrast display device 2.Analog result shows, in the radiation angular range of ± 10 degree, be 2.55 times of luminous efficiency of typical case's contrast display device 2 according to the luminous efficiency of the organic EL display apparatus of second execution mode, and be 0.355 times of drive current density of typical case's contrast display device 2 according to the drive current density of the organic EL display apparatus of second execution mode.In addition, if hypothesis colour filter along continuous straight runs is offset 0.3 μ m, then be 2.49 times of luminous efficiency of typical case's contrast display device 2 according to the luminous efficiency of the organic EL display apparatus of second execution mode, be 0.363 times of drive current density of typical case's contrast display device 2 according to the drive current density of the organic EL display apparatus of second execution mode, and be 1.18% according to the blend color ratio of the organic EL display apparatus of second execution mode.Organic EL display apparatus according to second execution mode can be realized all purposes, comprise 1/2 times the value of drive current density being down to the value that is not more than existing organic EL display apparatus, luminous efficiency is brought up to the value of the twice of the value that is not less than existing organic EL display apparatus, and blend color is not more than 3% value than being down to.It should be noted that if suppose that the amount by the light that sends according to the center of the luminescent device 10 in the organic EL display apparatus of second execution mode is 1, is 1.6 by first member 51 and second substrate 34 from the amount that luminescent device 10 exports outside light to then.
The 3rd execution mode
The 3rd execution mode also is the revision of first execution mode.Organic EL display apparatus according to the 3rd execution mode is used for the TV receiver.The size of each sub-pixel in the 3rd execution mode is greater than the size of the sub-pixel in first execution mode.Therefore, if sub-pixel is disposed by luminescent device 10, then the thickness of reflector layer 50 increases naturally.For this reason, the sub-pixel of the 3rd execution mode is disposed by one group of a plurality of luminescent device 10.Particularly, the sub-pixel of the 3rd execution mode is disposed by one group of 64 luminescent device 10.The size that it should be noted that luminescent device 10 is 10 μ m * 10 μ m and satisfies following relational expression:
0.5≤R 1/ R 2≤ 0.8 and
0.5≤H/R 1≤2.0。
The cross sectional shape on the inclined plane of round platform is straight line.In addition, the array of sub-pixel is the strip array shown in Fig. 2 B.It should be noted that in the strip array shown in Fig. 2 B, become simply for making figure that a sub-pixel is by 10 configurations of one group of three luminescent device.
Except as described above, according to the organic EL display apparatus of the 3rd execution mode can be constructed to have respectively with for according to the configuration of the organic EL display apparatus design of first execution mode and structure similarly configuration and structure.Therefore, omit being the configuration of organic EL display apparatus design and elaborating of structure according to the 3rd execution mode.For example it should be noted that, on whole surface, made up after the second member configuration layer of being made by polyimide resin, can come second member 52 shown in the design of graphics 9F based on photoetching technique and lithographic technique.
Under the situation of the 3rd execution mode, such as before elaboration, first substrate 11 and second substrate 34 are disposed by glass substrate respectively.In addition, organic layer 23 is formed by emitting red light sub-pixel, green emitting sub-pixel and blue-light-emitting sub-pixel.The emitting red light sub-pixel is configured to comprise the emitting red light device that has red light be used to sending, and the green emitting sub-pixel is configured to comprise the green light emitting device that has green light be used to sending.On the other hand, the blue-light-emitting sub-pixel is configured to comprise the blue luminescent device that has blue light be used to sending.It should be noted that luminescent device is configured to have the laminated construction of the luminescent layer that generally includes hole transporting layer and also be used as electron supplying layer to be provided for sending the structure of the light with white.In addition, if this laminated construction is called as series unit, then organic layer 23 can be configured to have the two-stage series connection structure that comprises two series units.If by adopting vacuum vapor deposition method to make up organic layer 23, for example, deposit is by being arranged on the material of the hole on the so-called metal mask that adopts in the vacuum vapor deposition method, to obtain to be used for the organic layer 23 of each emitting red light device, green light emitting device and blue luminescent device.
As mentioned above, table 1 conduct that provides according to the 3rd execution mode is provided has structured data with the organic EL display apparatus of the organic EL display apparatus of the configuration of first execution mode and the essentially identical configuration of structure and structure.This structured data comprises the diameter R of the light entrance face of first member 51 1, first member 51 the diameter R of light-emitting face 2, first member 51 angle of gradient θ, the thickness of diaphragm 31, the thickness of sealing material layer 32, the thickness of colour filter 33 and the diameter R of illuminating part 24 on inclined plane of truncated cone-shaped of height H, first member 51 0(perhaps particularly, the diameter of first electrode 21) etc.Equally under the situation according to the organic EL display apparatus of the 3rd execution mode, second electrode 22 and first member 51 are in direct contact with one another.
In addition, in the organic EL display apparatus as typical case's contrast display device 3, structure has the diameter R shown in the table 1 0 Illuminating part 24, and make up colour filter 33 and reflectors at second substrate 34.The most important thing is, be adhered on the illuminating part 24 of first substrate 11 by the reflector of adhesive layer with second substrate 34.That is to say that in this respect, the organic EL display apparatus that contrasts display device 3 as the typical case is the existing organic EL display apparatus of describing before with face reflector structure.Be 3.5 μ m with the thickness setting of adhesive layer.In addition, the organic EL display apparatus as typical case's contrast display device 3 ' has by removing the structure that reflector is constructed from the organic EL display apparatus that is used as typical case's contrast display device 3.
In addition, to according to the organic EL display apparatus of the 3rd execution mode, simulate as the organic EL display apparatus of typical case's contrast display device 3 and as the organic EL display apparatus of typical case's contrast display device 3 ', obtain brightness under efficient and 45 degree and the 60 degree angles of visual field and the ratio of front face brightness to obtain front face brightness, light.Shown in the analog result table 3 below.In addition, to having carried out simulation to draw the I/O state of light beam according to the organic EL display apparatus of the 3rd execution mode with as the typical organic EL display apparatus that contrasts display device 3.Analog result is shown in Fig. 4 A and Fig. 4 B.The most important thing is, to according to the organic EL display apparatus of the 3rd execution mode, as the organic EL display apparatus of typical case's contrast display device 3 with carried out simulation as the organic EL display apparatus of typical case's contrast display device 3 ' and distribute with the radiation angle that draws brightness.Analog result is shown in Fig. 5 A and Fig. 5 B.Should note, the transverse axis of Fig. 5 A is represented the angle of visual field that expenditure is represented, and vertical pivot is represented the brightness relative value, and this brightness relative value is by will being 1 and normalized value at the brightness settings as the 0 degree angle of visual field of the organic EL display apparatus of typical case contrast display device 3 '.Subsequently, be 1 by contrast display device 3 ' at the typical case with the brightness settings of each angle of visual field, to obtaining brightness according to the organic EL display apparatus of the 3rd execution mode with as in the organic EL display apparatus of typical case's contrast display device 3 each.It should be noted that in table 3 angle of visual field A and B are respectively the angles of visual field of 45 degree and 60 degree.In addition, in table 3, be respectively the ratio of brightness and front face brightness under the angle of visual field in the value that listing of angle of visual field A and B illustrates.
Table 3
Front face brightness Light obtains efficient Angle of visual field A Angle of visual field B
The 3rd execution mode 2.2 doubly 1.9 doubly 87% 79%
Contrast 3 1.6 doubly 1.4 doubly 31% 20%
Contrast 3 ' 1.0 doubly 1.0 doubly
Can obviously find out to have very good characteristic according to the organic EL display apparatus of the 3rd execution mode with comparing as the organic EL display apparatus of typical case's contrast display device 3 from Fig. 5 A and table 3.This be because, under the situation according to the organic EL display apparatus of the 3rd execution mode, second electrode 22 and first member 51 are in direct contact with one another, the feasible light that is sent by luminescent device 10 does not exist and obtains loss.In addition, can obviously find out from Fig. 5 A, compare with the organic EL display apparatus that is used as typical case's contrast display device 3 ' with the organic EL display apparatus as typical case's contrast display device 3, organic EL display apparatus according to the 3rd execution mode not only has higher front face brightness value, but also has the higher brightness relative value under the big angle of visual field.That is to say to have higher brightness value according to the organic EL display apparatus of the 3rd execution mode, and watching the angle of visual field of organic EL display apparatus irrelevant with the user.Therefore, the organic EL display apparatus according to the 3rd execution mode is the organic EL display apparatus that expectation is used for television receiver.
In addition, the angle of visual field by the light that will be sent by luminescent device 10 is taken as the variable element that expenditure is represented, the organic EL display apparatus according to the 3rd execution mode has been carried out simulation and has distributed with the angle of visual field that draws energy in first member 51.Analog result is shown in Fig. 5 B.In this case, critical angle is 33 degree, and the value by calculation expression arcsin (1.0/1.81) obtains.Critical angle is limiting angle, and in the configuration that does not comprise reflector, light can't surpass this limiting angle and export atmosphere to from first member 51 with refractive index 1.81.Therefore, can export atmosphere to from first member 51 at the degree of 0 shown in Fig. 5 B to the light in the 33 degree scopes.This light representations export to first member 51 the inboard all light 31%.
In the organic EL display apparatus as typical case's contrast display device 3, be adhered on the luminescent device of first substrate by the reflector of adhesive layer with second substrate.Therefore, light enters reflector by adhesive layer.Critical angle for the light that incides adhesive (such as the acrylic acid series reagent with refractive index of about 1.5) is 56 degree, and the value by calculation expression arcsin (1.5/1.81) obtains.Therefore, can utilize unlike 0 shown in Fig. 5 B degree light to the scope of the wide ranges of 56 degree.This light representations export to first member the inboard all light 75%.
On the other hand, under the situation according to the organic EL display apparatus that makes the 3rd execution mode that second electrode 22 and first member 51 be in direct contact with one another, can utilize unlike the light of the degree of 0 shown in Fig. 5 B to the scope of 90 wide ranges of spending.This light representations export to first member 51 the inboard all light 100%.Therefore, under the situation according to the organic EL display apparatus of the 3rd execution mode, can utilize the 3(=100/33 that has up to for the light quantity of the situation that reflector is not set) light of doubly amount.In addition, under the situation according to the organic EL display apparatus of the 3rd execution mode, can utilize to have up to for the 1.3(=100/75 as the light quantity of the organic EL display apparatus of typical case's contrast display device 3) light of doubly amount.It should be noted that to calculate to obtain from luminescent device 10 and be transmitted to light intensity that the efficient and multiply by of the light of first member 51 sends first member, 51 inboards to obtain the light intensity of first member, 51 inboards.After the light intensity of obtaining first member, 51 inboards, on all wavelengths intensity is being carried out integration to obtain the energy under the specific angle of visual field.Can obviously find out from Fig. 5 B, even if the light that is sent by luminescent device 10 also has bigger energy under the bigger angle of visual field.In other words, under the situation according to the organic EL display apparatus of the 3rd execution mode, even if the user also can watch bright image under the bigger angle of visual field.
The 4th execution mode
The 4th execution mode also is the revision of first execution mode.Under the first execution mode situation, the end face of first member 51 is positioned at the level approximately identical with the end face of second member 52.That is to say, with the space between adjacent second member 52 of first member, 51 fillings.On the other hand, under the situation of the 4th execution mode, as ise apparent from FIG. 6, make up the first member 51A with stratiform in the zone between adjacent second member 52, Fig. 6 is the illustraton of model that illustrates according to the part of the section of the display device of the 4th execution mode.Particularly, on second electrode 22, structure has 1.806 refractive index n 1The stratiform first member 51A with the average thickness of 0.2 μ m.Zone 51B is the zone of first electrode, 21 tops.Zone 51B by second member 52 and respectively the stratiform first member 51A of in second member 52 structure center on.Subsequently, by Si 1-yN yThe insulating protective film 31 that (silicon nitride) made is formed on the whole surface, and this surface is the zone of the top face of regional 51B and second member 52.The most important thing is, make up sealing material layer 32 and colour filter 33 at diaphragm 31.A part that it should be noted that sealing material layer 32 extends to regional 51B area inside.
Except as described above, have and the configuration identical according to the configuration of the organic EL display apparatus of first execution mode according to the organic EL display apparatus of the 4th execution mode.Therefore, do not elaborate configuration according to the organic EL display apparatus of the 4th execution mode.
Under the situation of the 4th execution mode 4A, will have the refractive index n of the first member 51A of stratiform 1Refractive index n with diaphragm 31 3Between poor (| n 1– n 3|) be set at 0.2 constant value, that is, (| n 1– n 3|)=0.2.By changing the refractive index n of the first member 51A 1Come the 4th execution mode 4A is simulated in the hope of the amount of light ratio.Shown in the table 4 that analog result provides hereinafter.Be 1.00 to obtain the light amount ratio shown in the table 4 by the light quantity setting that the typical case is contrasted display device 3 '.That is to say, be ratio for light quantity with the light quantity of typical case's contrast display device 3 ' of this situation for the light amount ratio of the situation in the table 4.In addition, with the refractive index n of second member 52 2Be set at 1.61.It should be noted that the parameter of the reflector layer that adopts is identical with the parameter shown in the table 1 at the reflector layer that adopts in the organic EL display apparatus according to the 3rd execution mode in the organic EL display apparatus according to the 4th execution mode 4A.In addition, the array of sub-pixels that adopts in the array of sub-pixels that adopts in the organic EL display apparatus according to the 4th execution mode 4A and the organic EL display apparatus according to the 3rd execution mode is identical.
Table 4
Can obviously find out from table 4, if will have the refractive index n of the first member 51A of stratiform 1Refractive index n with diaphragm 31 3Between poor (| n 1– n 3|) being set at 0.2 constant value, the first member 51A that then has stratiform can fully show the function of the photo-emission part that is used as reflector.In addition, if having the refractive index n of the first member 51A of stratiform 1Refractive index n greater than diaphragm 31 3, then light amount ratio is relatively little, as by at the digital certificate shown in the case (11) to (14) of table 4.
In addition, also checked relational expression between the angle of visual field and the brightness relative value.Such as before elaboration, the brightness relative value is to be 1 normalized value that obtains by the brightness settings that the typical case contrasted under 0 in the display device 3 ' the degree angle of visual field.Assay shows that for case (11) and (12), to the scope of the angles of visual field of-40 degree, the brightness relative value is relatively large in-90 angles of visual field of spending, and in the scope of the angle of visual field that the angles of visual field to 0 of-40 degree are spent, the brightness relative value is less relatively.On the other hand, in the scope of the angle of visual field that the angle of visual field to 40 of 0 degree is spent, the brightness relative value is relatively large again, and in the scope of the angle of visual field that the angles of visual field to 90 of 40 degree are spent, the brightness relative value is less relatively again.That is to say that assay shows that the brightness relative value has two peak values.Therefore it is evident that when the user watched organic EL display apparatus from the front, brightness reduced.
According to analog result, can reach a conclusion, expectation will be by the refractive index n from diaphragm 31 3In deduct the refractive index n of the first member 51A with stratiform 1And the poor (n that obtains 3– n 1) be set at and be not less than 0.2 value.
In addition, under the situation of the 4th execution mode 4B, with the refractive index n of diaphragm 31 3Be set at 1.8 constant value, and extend to the refractive index n of the sealing material layer 32 of regional 51B inboard 4Be variable.By changing refractive index n 4Come the 4th execution mode 4B is simulated in the hope of the amount of light ratio.Shown in the table 5 that analog result provides hereinafter.It should be noted that by the light quantity setting that the typical case is contrasted display device 3 ' to be 1.00 to obtain the light amount ratio shown in the table 5.In addition, with the refractive index n of second member 52 2Be set at 1.61, will have the refractive index n of the first member 51A of stratiform 1Be set at 1.806.
The most important thing is, also checked the relational expression between the angle of visual field and the brightness relative value.Such as before elaboration, the brightness relative value is to be 1 normalized value that obtains by the brightness settings that the typical case contrasted under 0 in the display device 3 ' the degree angle of visual field.Assay is shown in Figure 7.It should be noted that in Fig. 7 curve A is represented the relational expression for the case shown in the table 5 (22), and curve B is represented the relational expression for the case (27) shown in the same table.On the other hand, curve C represents to contrast for the typical case relational expression of display device 3 '.It should be noted that the parameter of the reflector layer that adopts is identical with the parameter shown in the table 1 at the reflector layer that adopts in the organic EL display apparatus according to the 3rd execution mode in the organic EL display apparatus according to the 4th execution mode 4B.In addition, the array of sub-pixels that adopts in the array of sub-pixels that adopts in the organic EL display apparatus according to the 4th execution mode 4B and the organic EL display apparatus according to the 3rd execution mode is identical.
Table 5
Figure BDA00002833230600351
From table 5 and Fig. 7, can obviously find out, along with the refractive index n of diaphragm 31 3Refractive index n with sealing material layer 32 4Between difference increase, the value of light amount ratio reduces.On the other hand, the brightness relative value under the big angle of visual field is greater than the brightness relative value under the 0 degree angle of visual field.In addition, for the light amount ratio of the case shown in the table 5 (26) less than 1.5.Therefore it is evident that, adopt the refractive index n that is set at 1.8 diaphragm 31 3, for the refractive index n of sealing material layer 32 4, expectation is not less than 1.5 value.That is to say that relational expression is satisfied in expectation | n 3-n 4|≤0.3.
In addition, according to the organic EL display apparatus of the 4th execution mode 4C and 4D have with at the identical reflector layer parameter of the parameter shown in the table 1 of the reflector layer that in the organic EL display apparatus according to the 3rd execution mode, adopts.In addition, the array of sub-pixels that adopts in the array of sub-pixels that adopts in the organic EL display apparatus according to the 4th execution mode 4C and 4D and the organic EL display apparatus according to the 3rd execution mode is identical.By changing diameter R 2Come the 4th execution mode 4C and 4D are simulated in the hope of the amount of light ratio.Shown in the table 6 and table 7 that analog result provides hereinafter.It should be noted that by the light quantity setting that the typical case is contrasted display device 3 ' to be 1.00 to obtain the light amount ratio shown in table 6 and the table 7.
Table 6
Case R 2（μm） R 2/R 1 Light amount ratio
（31） 8.62 1.57 1.32
（32） 8.96 1.63 1.44
（33） 9.34 1.70 1.55
（34） 9.74 1.77 1.63
（35） 10.02 1.82 1.67
（36） 10.10 1.84 1.70
（37） 10.78 1.96 1.71
Table 7
Case R 2（μm） R 2/R 1 Light amount ratio
（41） 5.31 1.52 1.20
（42） 5.54 1.58 1.24
（43） 5.76 1.64 1.28
（44） 5.95 1.70 1.32
（45） 6.16 1.76 1.36
（46） 6.39 1.83 1.41
（47） 6.63 1.89 1.44
（48） 6.90 1.97 1.47
From table 6 and table 7, can obviously find out, along with than R 2/ R 1Value increase, the value of light amount ratio also increases, but when than R 2/ R 1Value near 2.00 o'clock, the growth rate of the value of light amount ratio reduces.
In addition, also checked relational expression between the angle of visual field and the brightness relative value.Such as before elaboration, the brightness relative value is to be 1 normalized value that obtains by the brightness settings that the typical case contrasted under 0 in the display device 3 ' the degree angle of visual field.Assay shows, for the ratio R below 1.5 2/ R 1, along with the angle of visual field increases from-90 degree, the brightness relative value also increases near first maximum.After the brightness relative value had reached first maximum, the brightness relative value reduced to be issued to minimum value in the 0 degree angle of visual field.After the brightness relative value reached minimum value, the brightness relative value increased to reach second maximum again.After the brightness relative value reached second maximum, the brightness relative value reduced again.
Can find out obviously that from The above results expectation will be compared R 2/ R 1Be set at the value in 1.6 to 2.0 scopes.
The 5th execution mode
The 5th execution mode also is the revision of first execution mode.Yet under the situation of the 5th execution mode, light exports the outside by first substrate 11 to from luminescent device 10.That is to say, be bottom-emission type organic EL display apparatus according to the organic EL display apparatus of the 5th execution mode.Fig. 8 is the illustraton of model that illustrates according to the part of the section of the display device of the 5th execution mode.Display device according to the 5th execution mode is the organic EL display apparatus that adopts the active matrix system that is used for color display.It should be noted that array of sub-pixels is identical with the array shown in Fig. 2 A.
First member 51 is built as the have round platform shape of (or rotary body without a head).The 5th execution mode satisfies the relational expression that hereinafter provides.In these relational expressions, reference symbol R 1The diameter of representing the light entrance face of first member 51, reference symbol R 2The diameter of representing the light-emitting face of first member 51, reference character H are represented the height of first member 51, and reference symbol R 0The diameter of expression illuminating part.Under the situation of the 5th execution mode, the light entrance face of first member 51 is the surfaces that are exposed to second substrate 34, and the light-emitting face of first member 51 is the surfaces that are exposed to first substrate 11.
R 1=2.3μm
R 2=3.8μm
R 1/R 2=0.61
H=1.5μm
R 0=2.0μm
0.5≤R 1/R 2≤0.8
0.5≤H/R 1≤2.0。
The cross sectional shape that it should be noted that the inclined plane of round platform is straight line.That is to say that the cross sectional shape of first member 51 is trapezoidal.By the way, the cross sectional shape of first member 51 is the cross sectional shapes that obtain by cutting first member 51 above the virtual plane of the axis that comprises first member 51.
Under the situation of the 5th execution mode, second electrode 22 and first electrode 21 are used as anode electrode and cathode electrode respectively.Second electrode 22 is made by reflectorized material (perhaps more specifically, Al-Nd alloy).On the other hand, first electrode 21 is made by semi-transparent formula material.Particularly, first electrode 21 is made by the electric conducting material that comprises magnesium (Mg).More specifically, first electrode 21 is made by the Mg-Ag alloy with 10nm thickness.The one-tenth embrane method that has especially little one-tenth membrane granule energy by employing makes up second electrode 22, as the situation that adopts vacuum vapor deposition method.On the other hand, make up first electrode 21 by the combination of adopting vacuum vapor deposition method and etching method.
In addition, the refractive index of first electrode 21 and second electrode 22, the average light reflectivity of first electrode 21 and the average transmittance of second electrode 22 have also been measured.Measurement result is identical with first execution mode.Yet, when reading the measurement result of first execution mode for the contrast purpose, first electrode 21 should be interpreted as second electrode 22, and second electrode 22 should be interpreted as first electrode 21.
Under the situation of the 5th execution mode, first electrode 21 that adopts in organic EL display apparatus is arranged on the reflector layer 50 that comprises first member 51 and second member 52.In addition, reflector layer 50 covers the organic EL device drive division that makes up on first substrate 11.The organic EL device drive division does not illustrate in the drawings itself.The organic EL device drive division is configured to comprise a plurality of TFT.TFT is electrically connected with first electrode 21 by contact plug and lead.Not shown equally in the drawings, contact plug and lead are arranged on second member 52.In some cases, the organic EL device drive division also can be arranged on illuminating part 24 tops.
In the 5th execution mode, diaphragm 31 further is arranged on the illuminating part 24 in the mode identical with first execution mode with sealing material layer 32.
To distributing according to the organic EL display apparatus of the 5th execution mode 5A with as the radiation angle that the organic EL display apparatus of typical case's contrast display device 5A simulates to obtain brightness.Be that to have be the configuration of the 5th execution mode design and the organic EL display apparatus of structure according to the organic EL display apparatus of the 5th execution mode 5A.In the organic EL display apparatus according to the 5th execution mode 5A,
With diameter R 1Be set at 2.3 μ m;
With diameter R 2Be set at 3.8 μ m;
Height H is set at 1.5 μ m;
The angle on the inclined plane of the truncated cone-shaped of first member 51 is set at 63 degree;
Be 3.0 μ m with the thickness setting of diaphragm 31;
Be 10 μ m with the thickness setting of sealing material layer 32;
Be 2.0 μ m with the thickness setting of colour filter 33; And
The diameter (perhaps particularly, the diameter of first electrode 21) of illuminating part 24 is set at 2.0 μ m.
Have and configuration and the structure identical with structure according to the configuration of the organic EL display apparatus of the 5th execution mode 5A as the organic EL display apparatus of typical case contrast display device 5A, except the organic EL display apparatus as typical case's contrast display device 5A is provided with the SiO that substitutes reflector layer 50 2Outside the layer.Analog result shows, in the radiation angular range of ± 10 degree, be 2.2 times of luminous efficiency of typical case's contrast display device 5A according to the luminous efficiency of the organic EL display apparatus of the 5th execution mode 5A, and be 0.4 times of drive current density of typical case's contrast display device 5A according to the drive current density of the organic EL display apparatus of the 5th execution mode 5A.In addition, if hypothesis colour filter along continuous straight runs is offset 0.3 μ m, then be 2.3 times of luminous efficiency of typical case's contrast display device 5A according to the luminous efficiency of the organic EL display apparatus of the 5th execution mode 5A, be 0.5 times of drive current density of typical case's contrast display device 5A according to the drive current density of the organic EL display apparatus of the 5th execution mode 5A, and be 1.3% according to the blend color ratio of the organic EL display apparatus of the 5th execution mode 5A.
Equally under the situation according to the organic EL display apparatus of the 5th execution mode 5, stipulate the refractive index value n of first member 51 in advance 1And the refractive index n of first member 51 1Refractive index n with second member 52 2Between poor.Therefore, second member 52 on the surface of first member 51, namely on the interface between first member 51 and second member 52, reflections propagate is crossed at least a portion of the light of first member 51 reliably, even need not to arrange reflective member etc.In addition, can prevent reliably that also the light that is sent by luminescent device 10 from being reflected by first member 51 fully.The most important thing is, can also realize all purposes, comprise 1/2 times the value of drive current density being down to the value that is not more than existing organic EL display apparatus, luminous efficiency is brought up to the value of the twice of the value that is not less than existing organic EL display apparatus, and blend color is not more than 3% value than being down to.
It should be noted that structure according to the organic EL display apparatus of the 5th execution mode applicable to the organic EL display apparatus according to the 3rd execution mode, in order in the TV receiver, use the organic EL display apparatus according to the 5th execution mode.In this case, in the mode identical with the 3rd execution mode, a plurality of luminescent devices 10 are assembled to form a sub-pixel.
Up to the present, by describing preferred implementation the disclosure is set forth.Yet enforcement of the present disclosure never is limited to preferred implementation.That is to say that the element of setting forth in the description is typical.In other words, can revise these elements.The configuration that these elements comprise organic EL display apparatus according to described execution mode, adopted by each organic EL display apparatus and structure and the material that is used for making organic EL display apparatus and organic EL device.For example, as shown in figure 11, the refractive index n that has than diaphragm 31 can be set 3Higher refractive index n 5High-refractive-index regions 51C replace making the part of sealing material layer 32 to extend to the inboard of regional 51B, Figure 11 is the illustraton of model of a part that the section of the typical revision that obtains by the display device of revising according to the 4th execution mode is shown.Therefore, the light and the tilting zone 51D that are transmitted to high-refractive-index regions 51C from diaphragm 31 collide, and this tilting zone 51D is the interface between diaphragm 31 and the high-refractive-index regions 51C.Be returned high-refractive-index regions 51C with most of light of tilting zone 51D collision.As a result, can further improve the efficient of obtaining the light from the luminescent device to the outside.For example it should be noted that, can expect to satisfy the condition of following relational expression:
(n 5–n 3)≥0.3。
Also should keep firmly in mind, the disclosure also can be implemented as following enforcement:
1. display device comprises:
(A) first substrate is built with a plurality of luminescent devices of the stack layer that has the illuminating part that comprises first electrode, be configured to have the organic layer that comprises luminescent layer and second electrode respectively at first substrate; And
(B) be arranged on second substrate of second electrode top, wherein:
First substrate is provided with and comprises for propagating the light that sent by luminescent device and exporting light to outside first member and be used for filling the reflector layer of second member in the space between first member;
Relational expression 1.1≤n 1≤ 1.8 are suitable for, wherein, and reference symbol n 1The refractive index of representing first member;
Relational expression (n 1-n 2) 〉=0.2 is suitable for, wherein, and reference symbol n 2The refractive index of representing second member; And
Propagated first member light at least a portion by second member towards first member the surface or by the boundary reflection between first member and second member.
2. the root root is implemented 1 described display device, wherein, luminescent device and first member is contacted with each other.
3. the root root is implemented 1 or 2 described display devices, wherein, will export the outside to by the light that luminescent device sends by second substrate.
4. the root root is implemented 3 described display devices, and this display device also comprises:
Be positioned at diaphragm and sealing material layer on the reflector layer, wherein,
Relational expression | n 3– n 4|≤0.3 is suitable for, wherein, and reference symbol n 3And n 4The refractive index of representing diaphragm and sealing material layer respectively.
5. the root root is implemented 3 or 4 described display devices, wherein, is sent and by the measurer that first and second members export outside light to value in 1.5 to 2.0 scopes is arranged by luminescent device, and wherein, value 1.0 is taken as the amount of the light that sends from the center of luminescent device.
6. the root root is implemented each described display device in 3 to 5, and wherein, second substrate is provided with colour filter.
7. the root root is implemented each described display device in 1 to 6, and wherein, pixel is disposed by a luminescent device.
8. the root root is implemented 7 described display devices, and wherein, first member has the truncated conical shape that satisfies following relational expression:
0.5≤R 1/ R 2≤ 0.8 and
0.5≤H/R 1≤2.0
Wherein, reference symbol R 1The diameter of representing the light entrance face of first member, reference symbol R 2The diameter of representing the light-emitting face of first member, and reference character H is represented the height of first member.
9. the root root is implemented each described display device in 1 to 6, and wherein, pixel is disposed by the set of a plurality of luminescent devices.
10. the root root is implemented 9 described display devices, and wherein, first member has the truncated conical shape that satisfies following relational expression:
0.5≤R 1/ R 2≤ 0.8 and
0.5≤H/R 1≤2.0
Wherein, reference symbol R 1The diameter of representing the light entrance face of first member, reference symbol R 2The diameter of representing the light-emitting face of first member, and reference character H is represented the height of first member.
11. the root root is implemented each described display device in 1 to 10, wherein:
First member is by Si 1-xN x, ITO, IZO, TiO 2, Nb 2O 5, brominated (Br) polymer, sulfur-bearing (S) polymer, titaniferous (Ti) polymer or contain zirconium (Zr) polymer and make; And
Second member is by SiO 2, MgF, LiF, polyimide resin, acrylic resin, fluorine resin, silicones, fluorine based polymer or silicon based polymer make.
12. the method for the manufacture of display device, this display device comprises:
(A) first substrate is built with a plurality of luminescent devices of the stack layer that has the illuminating part that comprises first electrode, be configured to have the organic layer that comprises luminescent layer and second electrode respectively at first substrate; And
(B) be arranged on second substrate of second electrode top, wherein:
First substrate is provided with and comprises for propagating the light that sent by luminescent device and exporting light to outside first member and be used for filling the reflector layer of second member in the space between first member; And
Propagated first member light at least a portion by second member towards first member the surface or by the boundary reflection between first member and second member,
This manufacture method comprises:
Make up interlayer insulating film at first substrate, and make up first electrode at interlayer insulating film; Subsequently
Make up the second member configuration layer at first electrode and interlayer insulating film, and remove second member that the second member configuration layer on first electrode obtains to have the aperture of band face of slope by selectivity subsequently; Subsequently
Illuminating part and second electrode above the position above first electrode of the bottom that is exposed to the aperture is structured in aperture domatic; And subsequently
Make up first member at second electrode.
13. the method for the manufacture of display device, this display device comprises:
(A) first substrate is built with a plurality of luminescent devices of the stack layer that has the illuminating part that comprises first electrode, be configured to have the organic layer that comprises luminescent layer and second electrode respectively at first substrate, and
(B) be arranged on second substrate of second electrode top, wherein,
First substrate is provided with and comprises for propagating the light that sent by luminescent device and export light to outside first member and be used for filling the reflector layer of second member in the space between first member, and
Propagated first member light at least a portion by second member towards first member the surface or by the boundary reflection between first member and second member,
This manufacture method comprises:
Preparation has the stamping die with the shape of the first member complementation;
Resin material is coated on the supporting substrate; Subsequently
After utilizing stamping die structure resin material, by removing the resin material layer that stamping die obtains to have protuberance; Subsequently
Make the flat-topization of the protuberance of resin material layer, and subsequently with the space between the adhesive phase filling protuberance; And subsequently
Resin material layer is come off from supporting substrate, and with adhesive phase and first base plate bonding together to obtain by second member that comprises adhesive phase and to comprise the reflector layer of first member configuration of resin material layer.
In addition, the disclosure also can be implemented as following enforcement:
1. display unit comprises:
A plurality of luminescent devices are formed on the substrate;
A plurality of first members, corresponding with described luminescent device and be formed directly on the part of corresponding described luminescent device; And
A plurality of second members are formed in the zone between adjacent first member,
Wherein, described first member and described second member are configured to reflect and guide at least a portion of the light that passes through described first member that sends from illuminating part.
2. according to implementing 1 described display unit,
Wherein, at least one luminescent device comprise first electrode, second electrode and be formed on described first electrode and described second electrode between luminescent layer, and
Wherein, described first member is formed directly on described second electrode of corresponding described luminescent device.
3. according to implementing 2 described display unit, wherein, described luminescent layer is formed on described first electrode and described second member.
4. according to implementing 3 described display unit, wherein, described first electrode is made by reflectorized material, and described second electrode is made by at least part of material transparent.
5. according to implementing 1 described display unit,
Wherein, at least one luminescent device comprise first electrode, second electrode and be formed on described first electrode and described second electrode between luminescent layer, and
Wherein, described first member is formed directly on described first electrode of corresponding described luminescent device, and is formed between described first electrode and the described substrate.
6. according to implementing 5 described display unit, wherein, described second electrode is made by reflectorized material, and described first electrode is made by at least part of material transparent.
7. according to implementing 1 described display unit, wherein, the refractive index value n of described first member 1Refractive index value n with described second member 2Different.
8. according to implementing 7 described display unit, wherein, the refractive index n of described first member 1Refractive index n with described second member 2Satisfy following relation:
1.1≤n 1≤ 1.8; And
(n 1–n 2)≥0.2。
9. according to implementing 1 described display unit, wherein, the interface between described first member and described second member is as reflective optical system.
10. according to implementing 1 described display unit, wherein, at least one layer is formed between described first member and described second member.
11. according to implementing 10 described display unit, wherein, at least one electrode of described luminescent device and luminescent layer are formed between described first member and described second member.
12. according to implementing 1 described display unit, wherein, described first member has truncated cone-shaped.
13. according to implementing 12 described display unit, wherein, the shape of described first member satisfies following relation:
0.5≤R 1R 2≤ 0.8; And
0.5≤H/R 1≤2.0，
Wherein, R 1Be the diameter of the light entrance face of described first member, R 2Be the diameter of the light-emitting face of described first member, and H is the height of described first member.
14. according to implementing 1 described display unit, wherein, described first member comprises SiO 2, and described second member comprises SiN.
15. an electronic equipment comprises:
Display unit, it comprises:
A plurality of luminescent devices are formed on the substrate;
A plurality of first members, corresponding with described luminescent device and be formed directly on the part of corresponding described luminescent device; And
A plurality of second members are formed in the zone between adjacent first member,
Wherein, described first member and described second member are configured to reflect and guide at least a portion of the light that passes through described first member that sends from illuminating part.
16. a method of making display unit, described method comprises:
Form a plurality of luminescent devices at substrate;
On the part of corresponding described luminescent device, directly form a plurality of first members corresponding with described luminescent device; And
Be formed on a plurality of second members that form in the zone between adjacent first member,
Wherein, described first member and described second member are configured to reflect and guide at least a portion of the light that passes through described first member that sends from illuminating part.
17. a display unit comprises:
A plurality of luminescent devices are formed on the substrate;
A plurality of first members, corresponding with described luminescent device, each first member is formed on in the described luminescent device corresponding one; And
A plurality of second members are formed in the zone between adjacent first member,
Wherein, the refractive index value n of described first member 1Refractive index value n with described second member 2Different.
Present technique comprises and is involved on February 17th, 2012 in Japan's patent application formerly JP2012-033053 number that Japan Patent office submits to and on the October 5th, 2012 of disclosed theme in Japan's patent application formerly that Japan Patent office submits to JP2012-223389 number, its full content is incorporated into this is for reference.

Claims (18)

1. display unit comprises:
A plurality of luminescent devices are formed on the substrate;
A plurality of first members, corresponding with described luminescent device and be formed directly on the part of corresponding described luminescent device; And
A plurality of second members are formed in the zone between adjacent first member,
Wherein, described first member and described second member are configured to reflect and guide at least a portion of the light that passes through described first member that sends from illuminating part.
2. display unit according to claim 1,
Wherein, at least one luminescent device comprise first electrode, second electrode and be formed on described first electrode and described second electrode between luminescent layer, and
Wherein, described first member is formed directly on described second electrode of corresponding described luminescent device.
3. display unit according to claim 2, wherein, described luminescent layer is formed on described first electrode and described second member.
4. display unit according to claim 3, wherein, described first electrode is made by reflectorized material, and described second electrode is made by at least part of material transparent.
5. display unit according to claim 1,
Wherein, at least one luminescent device comprise first electrode, second electrode and be formed on described first electrode and described second electrode between luminescent layer, and
Wherein, described first member is formed directly on described first electrode of corresponding described luminescent device, and is formed between described first electrode and the described substrate.
6. display unit according to claim 5, wherein, described second electrode is made by reflectorized material, and described first electrode is made by at least part of material transparent.
7. display unit according to claim 1, wherein, the refractive index value n of described first member 1Refractive index value n with described second member 2Different.
8. display unit according to claim 7, wherein, the refractive index n of described first member 1Refractive index n with described second member 2Satisfy following relation:
1.1≤n 1≤ 1.8; And
(n 1–n 2)≥0.2。
9. display unit according to claim 1, wherein, the interface between described first member and described second member is as reflective optical system.
10. display unit according to claim 1, wherein, at least one layer is formed between described first member and described second member.
11. display unit according to claim 10, wherein, at least one electrode of described luminescent device and luminescent layer are formed between described first member and described second member.
12. display unit according to claim 1, wherein, described first member has truncated cone-shaped.
13. display unit according to claim 12, wherein, the shape of described first member satisfies following relation:
0.5≤R 1R 2≤ 0.8; And
0.5≤H/R 1≤2.0，
Wherein, R 1Be the diameter of the light entrance face of described first member, R 2Be the diameter of the light-emitting face of described first member, and H is the height of described first member.
14. display unit according to claim 1, wherein, described first member comprises SiO 2, and described second member comprises SiN.
15. an electronic equipment comprises:
Display unit, it comprises:
A plurality of luminescent devices are formed on the substrate;
A plurality of first members, corresponding with described luminescent device and be formed directly on the part of corresponding described luminescent device; And
A plurality of second members are formed in the zone between adjacent first member,
Wherein, described first member and described second member are configured to reflect and guide at least a portion of the light that passes through described first member that sends from illuminating part.
16. a method of making display unit, described method comprises:
Form a plurality of luminescent devices at substrate;
On the part of corresponding described luminescent device, directly form a plurality of first members corresponding with described luminescent device; And
Be formed on a plurality of second members that form in the zone between adjacent first member,
Wherein, described first member and described second member are configured to reflect and guide at least a portion of the light that passes through described first member that sends from illuminating part.
17. a display unit comprises:
A plurality of luminescent devices are formed on the substrate;
A plurality of first members, corresponding with described luminescent device, each first member is formed on in the described luminescent device corresponding one; And
A plurality of second members are formed in the zone between adjacent first member,
Wherein, the refractive index value n of described first member 1Refractive index value n with described second member 2Different.
18. display unit according to claim 17,
Wherein, at least one luminescent device comprise first electrode, second electrode and be formed on described first electrode and described second electrode between luminescent layer, and
Wherein, described first member is formed directly on described second electrode of corresponding described luminescent device.
CN201310050890.2A 2012-02-17 2013-02-08 A display apparatus and a method for manufacturing the same Active CN103258838B (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2012033053 2012-02-17
JP2012-033053 2012-02-17
JP2012-223389 2012-10-05
JP2012223389A JP6082907B2 (en) 2012-02-17 2012-10-05 Display device and manufacturing method of display device

Publications (2)

Publication Number Publication Date
CN103258838A true CN103258838A (en) 2013-08-21
CN103258838B CN103258838B (en) 2017-04-12

Family

ID=48962655

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201310050890.2A Active CN103258838B (en) 2012-02-17 2013-02-08 A display apparatus and a method for manufacturing the same

Country Status (1)

Country Link
CN (1) CN103258838B (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107004772A (en) * 2014-12-04 2017-08-01 索尼公司 Organic el element and display device
CN107579166A (en) * 2017-08-31 2018-01-12 京东方科技集团股份有限公司 Display panel, display device and display panel preparation method
CN108701772A (en) * 2016-03-04 2018-10-23 索尼公司 Organic electroluminescent device and the method for manufacturing organic electroluminescent device
CN108807458A (en) * 2017-04-28 2018-11-13 昆山国显光电有限公司 Dot structure, the OLED display screen comprising the dot structure, vapor deposition mask plate
CN108885847A (en) * 2016-03-31 2018-11-23 索尼公司 Display device and electronic equipment
CN109728183A (en) * 2017-10-31 2019-05-07 乐金显示有限公司 Organic light-emitting diode (OLED) display apparatus
CN110447308A (en) * 2017-03-31 2019-11-12 索尼半导体解决方案公司 Light-emitting component, display equipment and electronic device
CN111243527A (en) * 2015-07-28 2020-06-05 索尼公司 Display panel, display device and electronic equipment
JP2022087804A (en) * 2020-12-01 2022-06-13 シャープ株式会社 Light-emitting structure, display device and subpixel structure

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007248484A (en) * 2006-03-13 2007-09-27 Sony Corp Display device
US20100078745A1 (en) * 2008-09-29 2010-04-01 Sony Corporation Solid-state imaging device, method for manufacturing solid-state imaging device, and electronic apparatus
US20100102335A1 (en) * 2008-10-29 2010-04-29 Sony Corporation Organic el display and method of manufacturing the same
US20100200869A1 (en) * 2009-02-09 2010-08-12 Sony Corporation Method of manufacturing display device and display device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007248484A (en) * 2006-03-13 2007-09-27 Sony Corp Display device
US20100078745A1 (en) * 2008-09-29 2010-04-01 Sony Corporation Solid-state imaging device, method for manufacturing solid-state imaging device, and electronic apparatus
US20100102335A1 (en) * 2008-10-29 2010-04-29 Sony Corporation Organic el display and method of manufacturing the same
US20100200869A1 (en) * 2009-02-09 2010-08-12 Sony Corporation Method of manufacturing display device and display device

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107004772A (en) * 2014-12-04 2017-08-01 索尼公司 Organic el element and display device
US11854474B2 (en) 2015-07-28 2023-12-26 Sony Group Corporation Display panel, display device, and electronic device
CN111243527A (en) * 2015-07-28 2020-06-05 索尼公司 Display panel, display device and electronic equipment
CN108701772A (en) * 2016-03-04 2018-10-23 索尼公司 Organic electroluminescent device and the method for manufacturing organic electroluminescent device
CN113437131A (en) * 2016-03-31 2021-09-24 索尼公司 Display device
CN108885847B (en) * 2016-03-31 2021-09-17 索尼公司 Display device and electronic apparatus
CN108885847A (en) * 2016-03-31 2018-11-23 索尼公司 Display device and electronic equipment
CN110447308A (en) * 2017-03-31 2019-11-12 索尼半导体解决方案公司 Light-emitting component, display equipment and electronic device
CN108807458A (en) * 2017-04-28 2018-11-13 昆山国显光电有限公司 Dot structure, the OLED display screen comprising the dot structure, vapor deposition mask plate
CN108807458B (en) * 2017-04-28 2024-01-23 昆山国显光电有限公司 Pixel structure and OLED display screen comprising same
CN107579166B (en) * 2017-08-31 2024-04-12 京东方科技集团股份有限公司 Display panel, display device and display panel manufacturing method
WO2019041899A1 (en) * 2017-08-31 2019-03-07 京东方科技集团股份有限公司 Display panel, display device and display panel fabrication method
US11329258B2 (en) 2017-08-31 2022-05-10 Hefei Boe Optoelectronics Technology Co., Ltd. Display panel and manufacture method thereof, display device
CN107579166A (en) * 2017-08-31 2018-01-12 京东方科技集团股份有限公司 Display panel, display device and display panel preparation method
US11011732B2 (en) 2017-10-31 2021-05-18 Lg Display Co., Ltd. Organic light emitting diode display device
KR102521760B1 (en) * 2017-10-31 2023-04-13 엘지디스플레이 주식회사 Organic light emitting diodes display
CN109728183B (en) * 2017-10-31 2021-06-25 乐金显示有限公司 Organic light emitting diode display device
KR20190048833A (en) * 2017-10-31 2019-05-09 엘지디스플레이 주식회사 Organic light emitting diodes display
CN109728183A (en) * 2017-10-31 2019-05-07 乐金显示有限公司 Organic light-emitting diode (OLED) display apparatus
JP2022087804A (en) * 2020-12-01 2022-06-13 シャープ株式会社 Light-emitting structure, display device and subpixel structure
JP7235831B2 (en) 2020-12-01 2023-03-08 シャープ株式会社 Emissive structures, display devices and sub-pixel structures

Also Published As

Publication number Publication date
CN103258838B (en) 2017-04-12

Similar Documents

Publication Publication Date Title
CN103258838A (en) A display apparatus and a method for manufacturing the same
US20130214301A1 (en) Display apparatus and method for manufacturing display apparatus
US11545649B2 (en) Display device and electronic apparatus with relative misalignment between pixel and color filter
CN109378323B (en) Display device
US7375463B2 (en) Optical device and organic EL display
US20090206733A1 (en) Organic light emitting diode display and method of manufacturing the same
WO2016015385A1 (en) Transparent display panel and manufacturing method thereof, and transparent display device
WO2017169563A1 (en) Display device and electronic apparatus
KR20200080754A (en) Display device
US20220310974A1 (en) Display panel and display apparatus
CN101015232A (en) Organic electroluminescent display device
CN108123055A (en) light emitting device
CN114420871A (en) Display panel, preparation method thereof and display device
CN115407570A (en) Display panel and preparation method thereof
US20240224757A1 (en) Display apparatus
US20230209898A1 (en) Display apparatus
WO2024178556A1 (en) Display substrate and manufacturing method therefor, and display apparatus
JP2006085985A (en) Organic el display device
KR102722773B1 (en) Light emitting display apparatus
KR20230103633A (en) Display apparatus
CN118695700A (en) Display substrate and display device
CN115347132A (en) Display panel, preparation method thereof and display device
CN115458547A (en) Display device
CN118510318A (en) Display panel and method for manufacturing the same
KR20210010053A (en) Light emitting display apparatus

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
ASS Succession or assignment of patent right

Owner name: JANPAN ORGANIC RATE DISPLAY CO., LTD.

Free format text: FORMER OWNER: SONY CORP

Effective date: 20150709

C41 Transfer of patent application or patent right or utility model
TA01 Transfer of patent application right

Effective date of registration: 20150709

Address after: Tokyo, Japan

Applicant after: JOLED Inc.

Address before: Tokyo, Japan

Applicant before: Sony Corp.

GR01 Patent grant
GR01 Patent grant
TR01 Transfer of patent right
TR01 Transfer of patent right

Effective date of registration: 20231116

Address after: Tokyo, Japan

Patentee after: Japan Display Design and Development Contract Society

Address before: Tokyo

Patentee before: JOLED Inc.