CN101819983A - Light-emitting device and manufacturing method thereof as well as image display system applying same - Google Patents
Light-emitting device and manufacturing method thereof as well as image display system applying same Download PDFInfo
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- CN101819983A CN101819983A CN200910119921A CN200910119921A CN101819983A CN 101819983 A CN101819983 A CN 101819983A CN 200910119921 A CN200910119921 A CN 200910119921A CN 200910119921 A CN200910119921 A CN 200910119921A CN 101819983 A CN101819983 A CN 101819983A
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Abstract
The invention mainly provides a light-emitting device and a manufacturing method thereof as well as an image display system applying same. The light-emitting device comprises a base plate, a first electrode, a light-emitting layer and a second electrode, wherein the base plate is provided with a plurality of light-emitting zones; the first electrode is positioned on the base plate and is provided with a first lug positioned in a first light-emitting zone in the plurality of light-emitting zones; the light-emitting layer is positioned on the first electrode; and the second electrode is positioned on the light-emitting layer.
Description
Technical field
The present invention is relevant for the light-emitting device that is used for image display system, its manufacture method and the image display system of using this light-emitting device.
Background technology
Organic Light Emitting Diode can provide the colorimetric purity of light, it is one of the full-color flat-panel screens key in application condition of marching toward, it can use the microresonator effect, promptly make half reflection electrode, rightabout placement total reflection electrode in bright dipping place of light-emitting device, photon from luminescent layer interferes with each other between total reflection electrode and half-reflecting mirror, cause constructive or destruction interference, strengthen the light of certain specific wavelength and its halfwidth is narrowed down, some is then weakened.By the control microresonator, can strengthen special color light intensity in the light of Organic Light Emitting Diode.Use filter to obtain trichromatic coloured light as desire, can still obtain preferable colorimetric purity, and reduce the energy (electric energy) consumption filtering under the less light.
US7129634, SID 04DIGEST (page 1017～1019) disclose the Organic Light Emitting Diode that is used for display unit, insert transparent microresonator wall, the transparency electrode of different-thickness respectively at the pixel region of different color light.Transparent microresonator wall in single pixel region scope, the thickness of transparency electrode are then for fixing.Transparent microresonator wall, the transparency electrode of must repeatedly deposit, different-thickness is made in etching make process complications and increase the technology cost.
Summary of the invention
The invention provides a kind of light-emitting device, comprise: a substrate has a plurality of luminous zones; One first electrode is positioned on the aforesaid substrate, and above-mentioned first electrode has one first projection, and above-mentioned first projection is arranged in one first luminous zone of above-mentioned a plurality of luminous zones; One luminescent layer is positioned on above-mentioned first electrode; And one second electrode, be positioned on the above-mentioned luminescent layer.
The present invention provides a kind of image display system again, comprises: a display floater has above-mentioned light-emitting device; And an input unit, be coupled to above-mentioned display floater, and provide a signal to import above-mentioned display floater, so that above-mentioned display floater shows an image.
The present invention provides a kind of manufacture method of light-emitting device again, comprises the following step: a substrate is provided, is divided into a plurality of luminous zones, above-mentioned a plurality of luminous zones comprise one first luminous zone and one second luminous zone; Form in a plurality of luminous zones of an electrode basal layer all on aforesaid substrate; Form in above-mentioned first luminous zone of one first island hyaline layer on aforesaid substrate; Form a luminescent layer on above-mentioned first electrode; And form one second electrode on above-mentioned luminescent layer.
Description of drawings
Fig. 1 is an illustrative vertical view, shows according to light-emitting device of the present invention;
Fig. 2 A～2C is a vertical view, shows the arrangement mode according to projection of the present invention;
Fig. 3 A shows according to image display system of the present invention;
Fig. 3 B shows the layout according to display floater of the present invention.
The main element symbol description
10～light-emitting device, 100～device substrate
100B, 100G, 100R, 100W～luminous zone
100E1～E3～luminous zone 101～switch element
102～flatness layer, 110～reflection layer
120～the first electrode 120a, 102b～projection
121～electrode basal layer 123,123～island hyaline layer
125～projection, 130～pixel defining layer
140～luminescent layer, 150～the second electrodes
160～protective layer, 200～subtend substrate
200a～plane of incidence 200B, 200G, 200R, 200W～transparent area
210～light shield layer 220B～blue light chromatic filter layer
220G～green glow chromatic filter layer 220R～ruddiness chromatic filter layer
400～display floater, 410～viewing area
420～scan drive zone 430～data driver district
Embodiment
For above-mentioned and other purposes of the present invention, feature and advantage can be become apparent, cited below particularlyly go out preferred embodiment, and cooperate appended graphicly, be described in detail below:
The light-emitting device 10 of Fig. 1 comprises device substrate 100 and structure formed thereon, and 400 of display floaters that are used for image display system comprise above-mentioned light-emitting device 10, also can comprise subtend substrate 200 in addition and be formed at structure on the subtend substrate 200.
Light-emitting device 10 comprises: device substrate 100, reflection layer 110, first electrode 120, luminescent layer 140, second electrode 150, it can be upwards illuminated.Reflection layer 110 is for having reflexive material; First electrode can be a transparent material, for example tin indium oxide (Indium Tin Oxide is called for short ITO); Second electrode 150 can be the semi-transparent material of a half reflection; Device substrate 100 can be transparent or opaque substrate.
In Fig. 1, visual demand is formed at flatness layer 102 on the device substrate 100.When device substrate 100 has switch element 101, then can expose the contact of switch element 101 at flatness layer 102 formation openings.
On device substrate 100, form reflection layer 110, it is corresponding to the part luminous zone, for example in luminous zone 100R, 100G, 100B, 100W, all form flatness layer 102, and on flatness layer 102, forming reflection layer 110, the material of reflection layer 110 can be the material of aluminium or other tool light reflectives.Then, form first electrode 120 on device substrate 100, first electrode 120 that is positioned at luminous zone 100R, 100G, 100B, 100W then is to place on the reflection layer 110.According to present embodiment, first electrode 120 has projection 120b, 120a respectively at luminous zone 100R, 100W; According to other embodiment, first electrode 120 can have any pattern, quantity in having arbitrary at least luminous zone of reflection layer 110 projection to control the microresonator of each luminous zone, is adjusted the frequency spectrum from each emitted light in luminous zone.
In Fig. 1, the outward appearance of projection 120a, 120b is the stacking material from first electrode 120, it can comprise electrode basal layer 121 and island hyaline layer 122,123, electrode basal layer 121 is positioned at each luminous zone, the preferable material with island hyaline layer 122,123 of its material is identical, to reduce the pass through quantity of the heterogeneous interface in the path of light.First electrode 120 among the 100R of luminous zone has the island hyaline layer 123 of the local location that is laminated in electrode basal layer 121; First electrode 120 among the 100W of luminous zone has the island hyaline layer 122 of the local location that is laminated in electrode basal layer 121; 120 at first electrode among luminous zone 100G, the 100B of any projection is not set to have electrode basal layer 121 but not to have the island hyaline layer stacked with electrode basal layer 121.In addition, the electrode basal layer among projection 120a, the 120b 121 can exchange with the stacked on top of one another relation of island hyaline layer 121,122.
In Fig. 1, quantity, cross sectional shape, the thickness of projection 120a, 120b and island hyaline layer 122,123 is neither together; In other embodiments, at least in wantonly two luminous zones, the projection that first electrode 120 is had and the arrangement mode difference of island hyaline layer can be selected from the group of following composition: respectively have different quantity, respectively have different cross sectional shapes, respectively have different thickness, respectively be arranged in different figures, above-mentioned luminous zone and constitute different profiles and above-mentioned combination with the projection that is positioned at wherein respectively.
Please refer to Fig. 2 A～2C, wherein the formation at projection 125 is similar or equivalent with projection 120a, 120b shown in Figure 1.The spacing difference of the projection 125 in the luminous zone of Fig. 2 A, 2B 100E1,100E2, and be arranged in different figures respectively; In the luminous zone of Fig. 2 A, 2C 100E1,100E3, though the figure that projection 125 is arranged is identical, but border with respect to luminous zone 100E1,100E3, the relative position inequality of the projection 125 in two districts, and make luminous zone 100E1,100E3 constitute different profiles with the projection 125 that is positioned at wherein respectively.With the different arrangement modes of upper protruding block 125, it can be applicable to each luminous zone shown in Figure 1 and the situation of each projection.Island hyaline layer 122 shown in Figure 1,123 formation, can be according to required projection 120a, the thickness of 120b, form a transparency conducting layer (not illustrating) on reflection layer 110 comprehensively, form a blocking layer (not illustrating) again on above-mentioned transparency conducting layer, re-use and have island hyaline layer 122, the mask of 123 figure, with habitual little shadow, etching program, at luminous zone 100W, on the reflection layer 110 among the 100R, form the island hyaline layer 122 of electrically conducting transparent material respectively, 123, can form the island hyaline layer 122 of different-thickness by the figure that different light transmittances are set in aforementioned mask, 123.Then, first electrode 120 of the electrically conducting transparent material that tiles on the body structure surface of the device substrate 100 that forms island hyaline layer 122,123 comprehensively, and cover island hyaline layer 122,123 and manifest the profile of projection 120a, 120b at upper surface, the demand of looking is again electrically separated first electrode 120 that is positioned at each luminous zone through little shadow, etching.Therefore, can only use material deposition together, patterned technology to control the microresonator of light-emitting component.At this moment, first electrode 120 in each luminous zone is electrically to separate each other.In addition, visual demand luminous zone 100R, 100G, 100B and 100W each other between first electrode 120 of boundary position on, form pixel region definition layer 130, its material is transparent dielectric medium, and first electrode 120 is made further electrical isolation.
Then, form a luminescent layer 140 on first electrode 120.Luminescent layer 140 can be organic electro luminescent layer, has number laminate materials layer by layer, and the order that begins from itself and the interface of first electrode 120 for example is hole injection layer, hole transmission layer, main light emission layer, electron transfer layer, and electron injecting layer etc.Luminescent layer 140 is to cover pixel region definition layer 130.Then, on luminescent layer 140, form second electrode 150.The material and the formation method of reflection layer 110, first electrode 120, luminescent layer 140 and second electrode 150 of aforementioned present embodiment all are to adopt the present invention to propose the known at that time technology of patent application.
According to present embodiment, reflection layer 110, first electrode 120, luminescent layer 140, second electrode 150 constitute an Organic Light Emitting Diode.The present invention is the various arrangement modes of projection by control first electrode 120, for the control of the microresonator between the reflection layer 110 and second electrode 150, provide more adjustable change because of, can reach required irradiant frequency spectrum more accurately; Known techniques only can be adjusted the thickness of microresonator wall or transparency electrode and control microresonator, and controllable change is because of few.The formation of the projection of other first electrode 120 only need increase by one thin film deposition and patterned step, can reduce the output time, reduce the technology cost.Also have, the opticpath that reflection layer 110 is reflected can be through the projection of first electrode 120, projection is suitably arranged, can be reduced the path length difference of the ejaculation light of different angles, and can enlarge the visual perspective of the system in order to display image of the present invention to audience's naked eyes.
In Fig. 1, visual demand forms a protective layer 160 on second electrode 150, and it can be the transparent dielectric layer of tool inactivity.
And display floater 400 still comprises a subtend substrate 200.Has S at interval between subtend substrate 200 and device substrate 100, the two be arranged in parallel, make luminous zone 100R, the 100G from device substrate 100, the light of 100B, 100W, arrive and see through transparent area 200R, 200G, 200B, 200W on the corresponding subtend substrate 200 respectively.One light shield layer 210 can place being subjected on the plane of incidence 200a from the light of luminous zone 100R, 100G, 100B and 100W of subtend substrate 200, and be positioned at transparent area 200R, 200G, 200B, 200W between.Light shield layer 210 can be metal, polymer or other tool light-proofnesss, the reflexive material of low light.
In the present embodiment, all are white lights from the light of luminous zone 100R, 100G, 100B, 100W, so need with a colorized optical filtering be placed on corresponding subtend substrate 200 transparent area at least some in.For example at least one group four continuously arranged transparent area 200R, 200G, 200B, 200W, the chromatic filter layer of three transparent area 200R, 200G, 200B of being placed in one is respectively ruddiness chromatic filter layer 220R, green glow chromatic filter layer 220G, blue light chromatic filter layer 220B, then is not equipped with any chromatic filter layer at transparent area 200W.Thus, luminous zone 100R, transparent area 200R are combined as the ruddiness pixel region, luminous zone 100G, transparent area 200G are combined as the green glow pixel region, and luminous zone 100B, transparent area 200B are combined as the blue light pixel region, and luminous zone 100W, transparent area 200W are combined as the white light pixel region.
In other embodiments, be positioned at luminous zone 100R, 100G, 100B, can send ruddiness, green glow, blue light and white light respectively with the luminescent layer 140 of 100W.In the case, can not need form any chromatic filter layer.
Fig. 3 A and 3B show the image display system of another preferred embodiment of the present invention, and it comprises a display floater 400 or an electronic installation 600.
As shown in Figure 3A, display floater 400 can be used to make the various electronic installations 600 that comprise display floater 400 and input unit 500.Input unit 500 is to be coupled to display floater 400 and with signal (for example image signal) input display panel 400, to produce image.Electronic installation 600 can be mobile phone, digital still camera, personal digital assistant, notebook computer, desktop computer, TV, automobile-used display or portable type digit audio-visual optical disc player.
Fig. 3 B shows an illustrative layout of display floater 400.Display floater 400 comprises viewing area 410, scans drive zone 420, data driver district 430, the circuit region 440 additional with selectivity.Viewing area 410 comprises a plurality of switch elements shown in Figure 1 101.Scan the next door that drive zone 420 and data driver district 430 place viewing area 410.Scan drive zone 420 voltage is acted on pixel electrode in the viewing area 410, data driver district 430 acts on voltage the gate of the thin-film transistor in the viewing area 410.
Next, verify usefulness of the present invention with the display floater of following control group, experimental group 1, experimental group 2.The process conditions of three groups of display floaters and material are all described to the display 400 of Fig. 1 with reference to preamble, its employed specified conditions are one of condition that can be used for each embodiment of the present invention, and it only is used for for example and should be used for the scope of limit claim of the present invention.
Following elder generation is as follows because of the bar row with the constant change of three groups of display floaters:
Next the control of listing three groups of display floaters become because of and condition:
Control group: first electrode 120 of bumpless, promptly only contain electrode basal layer 121, it is a thickness
Tin indium oxide; The material of hole transmission layer be NPB (N, N '-diphenyl-N, N '-bis (1-naphthyl)-1,1 '-biphenyl-4,4 '-diamine), thickness is
1: the first electrode 120 of experimental group has thickness and is
Electrode basal layer 121, be with thickness
A pair of island hyaline layer 122; First electrode 120 is tin indium oxide with the material of island hyaline layer 122; The material of hole transmission layer is NPB, and thickness is
The condition of 2: the first electrodes 120 of experimental group is identical with experimental group 1; The material of hole transmission layer is NPB, and thickness is
The color coordinate (being defined by CIE 1931 specifications) of the light of the display floater of measurement control group, experimental group 1, experimental group 2 is listed in down tabulation 1.
Table 1
By the result of last tabulation 1 as can be known, no matter in the performance of the colorimetric purity of white light, ruddiness, green glow, blue light, the colorimetric purity that has 1,2 various coloured light that can provide of experimental group of projection at first electrode 120 all is better than first electrode 120 supplier of control group institute of any projection of tool not.In addition, aspect the performance of wide viewing angle, all in 0.02, the white color kilsyth basalt that is better than control group is existing for the white light colourity difference of experimental group 1,2 between 0,45,60 degree of visual angle.
Though the present invention discloses as above with preferred embodiment; right its is not in order to limit the present invention; any persond having ordinary knowledge in the technical field of the present invention; without departing from the spirit and scope of the present invention; when can doing a little change and retouching, so protection scope of the present invention is as the criterion when looking the claim person of defining.
Claims (10)
1. light-emitting device comprises:
Substrate has a plurality of luminous zones;
First electrode is positioned on this substrate, and this first electrode has first projection, and this first projection is arranged in first luminous zone of described luminous zone;
Luminescent layer is positioned on this first electrode; And
Second electrode is positioned on this luminescent layer.
2. light-emitting device as claimed in claim 1, wherein this first electrode comprises the electrode basal layer and the first island hyaline layer, and this electrode base-layer bits is in all a plurality of luminous zones, and this first island hyaline layer is positioned at this first luminous zone, corresponding to this first projection.
3. light-emitting device as claimed in claim 2, wherein this first island hyaline layer is positioned at this electrode basal layer below.
4. light-emitting device as claimed in claim 2, wherein this first island hyaline layer is positioned at this electrode basal layer top.
5. light-emitting device as claimed in claim 2, wherein this first electrode also comprises:
Second projection, this second projection is arranged in second luminous zone of described luminous zone; And
The second island hyaline layer is positioned at this second luminous zone, corresponding to this second projection.
6. light-emitting device as claimed in claim 5, wherein this first island hyaline layer is different with the arrangement mode of this second island hyaline layer, and the different arrangement modes of this first island hyaline layer and this second island hyaline layer are the groups that is selected from following composition: respectively have different quantity, respectively have different cross sectional shapes, respectively have different thickness, respectively be arranged in different figures, respectively constitute different profiles, with above-mentioned combination.
7. image display system comprises:
Display floater has light-emitting device as claimed in claim 1; And
Input unit is coupled to this display floater, and provides signal to import this display floater, so that this display floater display image.
8. the manufacture method of a light-emitting device comprises following steps:
Substrate is provided, is divided into a plurality of luminous zones, described luminous zone comprises first luminous zone and second luminous zone;
Form in a plurality of luminous zones of electrode basal layer all on this substrate;
Form in the first island hyaline layer this first luminous zone on this substrate;
Form luminescent layer on this first electrode; And
Form second electrode on this luminescent layer.
9. method as claimed in claim 8, wherein this formation electrode basal layer step is after this forms the first island hyaline layer step.
10. method as claimed in claim 8 also comprise forming in the second island hyaline layer this second luminous zone on this substrate, and this first island hyaline layer has different arrangement modes with this second island hyaline layer.
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| CN200910119921A CN101819983A (en) | 2009-02-26 | 2009-02-26 | Light-emitting device and manufacturing method thereof as well as image display system applying same |
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| CN200910119921A CN101819983A (en) | 2009-02-26 | 2009-02-26 | Light-emitting device and manufacturing method thereof as well as image display system applying same |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109426029A (en) * | 2017-08-28 | 2019-03-05 | 乐金显示有限公司 | Flexible color filter device substrate and flexible emissive display device including the substrate |
| CN110767703A (en) * | 2018-12-28 | 2020-02-07 | 云谷（固安）科技有限公司 | Array substrate, display panel and display device |
| JP2021520509A (en) * | 2018-05-08 | 2021-08-19 | 京東方科技集團股▲ふん▼有限公司Ｂｏｅ Ｔｅｃｈｎｏｌｏｇｙ Ｇｒｏｕｐ Ｃｏ．，Ｌｔｄ． | Display board, its manufacturing method, and display device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002124373A (en) * | 2000-10-17 | 2002-04-26 | Canon Inc | Organic luminous element |
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- 2009-02-26 CN CN200910119921A patent/CN101819983A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002124373A (en) * | 2000-10-17 | 2002-04-26 | Canon Inc | Organic luminous element |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109426029A (en) * | 2017-08-28 | 2019-03-05 | 乐金显示有限公司 | Flexible color filter device substrate and flexible emissive display device including the substrate |
| CN109426029B (en) * | 2017-08-28 | 2021-11-02 | 乐金显示有限公司 | Flexible color filter substrate and flexible light emitting display device including the same |
| JP2021520509A (en) * | 2018-05-08 | 2021-08-19 | 京東方科技集團股▲ふん▼有限公司Ｂｏｅ Ｔｅｃｈｎｏｌｏｇｙ Ｇｒｏｕｐ Ｃｏ．，Ｌｔｄ． | Display board, its manufacturing method, and display device |
| JP7276154B2 (en) | 2018-05-08 | 2023-05-18 | 京東方科技集團股▲ふん▼有限公司 | Display substrate, manufacturing method thereof, and display device |
| CN110767703A (en) * | 2018-12-28 | 2020-02-07 | 云谷（固安）科技有限公司 | Array substrate, display panel and display device |
| CN110767703B (en) * | 2018-12-28 | 2020-09-08 | 云谷（固安）科技有限公司 | Array substrate, display panel and display device |
| US11387281B2 (en) | 2018-12-28 | 2022-07-12 | Yungu (Gu'an) Technology Co., Ltd. | Array substrate, display panel and display device, enabling full screen display with transparent and non-transparent display areas |
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Application publication date: 20100901 |