CN203690349U - Oled display panel - Google Patents
Oled display panel Download PDFInfo
- Publication number
- CN203690349U CN203690349U CN201320877359.8U CN201320877359U CN203690349U CN 203690349 U CN203690349 U CN 203690349U CN 201320877359 U CN201320877359 U CN 201320877359U CN 203690349 U CN203690349 U CN 203690349U
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- Prior art keywords
- optical coupling
- coupling layer
- oled display
- display floater
- layer
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- 230000008878 coupling Effects 0.000 claims abstract description 56
- 238000010168 coupling process Methods 0.000 claims abstract description 56
- 238000005859 coupling reaction Methods 0.000 claims abstract description 56
- 230000003287 optical effect Effects 0.000 claims abstract description 55
- 239000000758 substrate Substances 0.000 claims abstract description 8
- 239000000463 material Substances 0.000 claims description 12
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 4
- 229910010413 TiO 2 Inorganic materials 0.000 claims description 4
- SBIBMFFZSBJNJF-UHFFFAOYSA-N selenium;zinc Chemical compound [Se]=[Zn] SBIBMFFZSBJNJF-UHFFFAOYSA-N 0.000 claims description 4
- 238000005516 engineering process Methods 0.000 abstract description 5
- 238000001704 evaporation Methods 0.000 description 15
- 230000008020 evaporation Effects 0.000 description 15
- 238000010586 diagram Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 239000002131 composite material Substances 0.000 description 3
- 238000000605 extraction Methods 0.000 description 3
- 239000004065 semiconductor Substances 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000007598 dipping method Methods 0.000 description 2
- 239000004973 liquid crystal related substance Substances 0.000 description 2
- 230000027756 respiratory electron transport chain Effects 0.000 description 2
- 238000003491 array Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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Abstract
The utility model relates to the field of the display technology, and discloses an OLED display panel. The OLED display panel includes an anode, an organic light emitting layer, a cathode, and a first optical coupling layer which are sequentially formed on a substrate; the OLED display panel also includes a second optical coupling layer; the second optical coupling layer is arranged at one side of the first optical coupling layer, wherein the one side of the first optical coupling layer is away from the cathode; and the second optical coupling layer is formed by arranging a plurality of convex cambered surface structures. In the utility model, the second optical coupling layer surface is provided with the convex cambered surface structure, so that the light which is originally totally reflected by the first optical coupling layer surface is transmitted out; the total reflection of the light is reduced; the removal rate of the light is increased; and the external quantum efficiency of the device is improved.
Description
Technical field
The utility model relates to organic electro-optic device preparation field, particularly a kind of OLED display floater.
Background technology
OLED(Organic Light-Emitting Diode, Organic Light Emitting Diode) there is self-luminous, all solid state, wide visual angle, respond the plurality of advantages such as fast, and in flat panel display, there is huge application prospect, the OLED LCD(Liquid Crystal Display that is considered to continue, liquid crystal display), PDP(Plasma Display Panel, plasma display panel) flat panel display product of new generation and technology afterwards.OLED is widely used in display and lighting field at present.In order to allow semiconductor light-emitting elements guarantee higher functional reliability and lower energy consumption thereof, need to improve the external quantum efficiency (External quantum efficiency) of element itself.In general, the external quantum efficiency of semiconductor light-emitting elements depends on that the internal quantum of itself and light take out efficiency.Wherein internal quantum efficiency is determined by the characteristic of material itself, and therefore, in the situation that internal quantum cannot effectively promote, the light taking-up efficiency that increases semiconductor luminous assembly is particularly important.
In the prior art, adopt the material of suitable thickness and index matched as cathode coating, the light that can improve top ballistic device takes out efficiency.The general larger material of refractive index that adopts, the transmitance of negative electrode is larger, is more conducive to the taking-up of light.Therefore conventionally adopt the material of high index of refraction as antireflection layer, the light that increases top ballistic device takes out efficiency.As shown in Figure 1, for the OLED display panel structure schematic diagram that prior art provides, form successively anode 2, organic luminous layer 3 and negative electrode 4 on substrate 1, a side that deviates from described substrate 1 at negative electrode 4 forms one deck planar light coupling layer 5.
But because the refractive index of antireflection layer is greater than air refraction, as shown in Figure 1, light is in the time shining the top of cathode coating, having there is total reflection in part light, therefore, in bright dipping side, full transmitting can occur, and is unfavorable for the taking-up of light, lost part light.
utility model content
(1) technical problem solving
The technical problem that the utility model solves is: how a kind of OLED display floater is provided, solves the problem in bright dipping side generation total reflection in prior art.
(2) technical scheme
For solving the problems of the technologies described above, the utility model embodiment provides a kind of OLED display floater, comprise the anode, organic luminous layer, negative electrode and the first optical coupling layer that are formed on successively on underlay substrate, also comprise: be formed on the second optical coupling layer that the bulge-structure that is cambered surface by some surfaces that described the first optical coupling layer deviates from a side of described negative electrode is arranged in.
Wherein, the semicolumn that the bulge-structure that described surface is cambered surface is bar shaped.
Wherein, the diameter of described semicolumn is less than the sub-pix width of described display floater.
Wherein, the bulge-structure that described surface is cambered surface is hemisphere.
Wherein, the aperture of described hemisphere is less than the sub-pix width of described display floater.
Wherein, the thickness of described the first optical coupling layer and the second optical coupling layer and be λ/4n, λ is peak luminous wavelength; N is the refractive index of described the first optical coupling layer and the second optical coupling layer.
Wherein, described n is more than or equal to 1.8.
Wherein, the material of described the first optical coupling layer and the second optical coupling layer comprises: ZnSe, TiO
2, SiO
2, Si
3n
4, Alq
3the composite material of one of them or at least two kinds.
(3) beneficial effect
The OLED display floater that the utility model provides is gone out for the bulge-structure of cambered surface makes the light transmission that total reflection will occur on the first optical coupling layer surface originally by the second optical coupling layer surface, thereby reduce the total reflection of light, increase the extraction efficiency of light, improved the external quantum efficiency of device.
accompanying drawing explanation
Fig. 1 is the OLED display panel structure schematic diagram that prior art provides;
Fig. 2 is the OLED display panel structure schematic diagram that the utility model embodiment provides;
Fig. 3 is the fine mask plate schematic diagram of the common pixel that provides in the OLED display floater manufacture method of the utility model embodiment;
Fig. 4 be the common pixel in Fig. 3 fine mask plate along A-A to schematic cross-section;
Fig. 5 is the fine mask plate schematic diagram providing in the OLED display floater manufacture method of the utility model embodiment;
Fig. 6 be fine mask plate in Fig. 5 along B-B to schematic cross-section.
embodiment
Below in conjunction with drawings and Examples, embodiment of the present utility model is described in further detail.Following examples are used for illustrating the utility model, but are not used for limiting scope of the present utility model.
A kind of OLED display floater manufacture method that the utility model embodiment provides, makes OLED display floater as shown in Figure 2, and the method comprises:
Step S1 forms successively the step that comprises anode 2, organic luminous layer 3, negative electrode 4 and the first optical coupling layer 5 on underlay substrate 1.The each pixel of OLED display floater comprises corresponding anode 2, organic luminous layer 3 and negative electrode 4 and the first optical coupling layer 5.In this step, make anode 2, organic luminous layer 3 and negative electrode 4 and the first optical coupling layer 5 and be all adopting existing common mask plate to make, the mode that can adopt evaporation by this common mask plate by corresponding anode 2, organic luminous layer 3, negative electrode 4 and the first optical coupling layer 5 figure successively evaporation to underlay substrate 1.The step of wherein making organic luminous layer 3 specifically comprises: evaporation hole injection layer and hole transmission layer successively on anode 2; On hole transmission layer, R, G, the B luminescent layer of evaporation sub-pix respectively; Evaporation electron transfer layer on luminescent layer; Evaporation electron injecting layer on electron transfer layer.
Wherein, for schematic diagram and the schematic cross-section of R, the G of evaporation sub-pix, the common mask plate of B luminescent layer (the second mask plate), respectively as shown in Figure 3 and Figure 4.On the second mask plate, have some parallel slits, R, G, B luminescent material see through slit evaporation on hole transmission layer.Hemispherical for preventing in each sub-pix that the figure evaporation of each layer becomes, the cross section of the slit on the second mask plate as shown in Figure 3.Wherein, the manufacture method of the second mask plate is same as the prior art, is not repeating at this.
Step S2, a side that deviates from described negative electrode 4 at the first optical coupling layer 5 forms the second optical coupling layer 6 that the bulge-structure that is cambered surface by some surfaces is arranged in.Concrete steps comprise: adopt the first mask plate on the first optical coupling layer 5, to carry out evaporation and form the second optical coupling layer 6; On the first mask plate, comprise some perforates for evaporation the second optical coupling layer 6, and the hole wall of described perforate is vertical with the first mask plate surface.To make the optical coupling layer material that sees through perforate form the bulge-structure of surface as cambered surface.
The surface of the second optical coupling layer 6 is that the bulge-structure of cambered surface makes the light generation scattering on the first optical coupling layer 5 surface originally, the light transmission that total reflection can occur is like this gone out, thereby reduce the total reflection of light, increased the extraction efficiency of light, improved the external quantum efficiency of device.
As illustrated in Figures 5 and 6, the perforate on the first mask plate can be slit, the semicolumn that the bulge-structure that the surface that evaporation forms is cambered surface is bar shaped.Preferably make the placement direction of slit of the first mask plate and vertical at the placement direction that forms the slit on the second mask plate adopting when organic luminous layer 5, simple and the semicolumn of manufacture craft can close-packed arrays like this, further increase the extraction efficiency of light, improve the external quantum efficiency of device.
Further, the slit width on the first mask plate is less than the slit width of described the second mask plate, makes the radius of the semicolumn of evaporation be less than sub-pix width, is more conducive to so to a certain extent the taking-up of light.As the sub-pix when incident light is of a size of 40um × 120um, the opening size L1 of the second mask plate is 46.5um, and the opening size L2 of the first mask plate is 3um; In the time that the sub-pix of incident light is of a size of 200 × 60um, the opening size L1 of the second mask plate is 70um, and the opening size L2 of the first mask plate is 5um.Make the radius of semicolumn much smaller than sub-pix width.
Perforate on the first mask plate can be also round point shape, and the bulge-structure that the surface that evaporation forms is cambered surface is hemisphere.The aperture of round point shape perforate is less than the width of the slit on the second mask plate adopting in the time forming organic luminous layer 5.
Further, the thickness of described the first optical coupling layer 5 and the second optical coupling layer 6 and be λ/4n, λ is peak luminous wavelength; N is the refractive index of described the first optical coupling layer 5 and the second optical coupling layer 6.The material that refractive index is higher is conducive to the taking-up of light, and in order to improve external quantum efficiency as far as possible, n is more than or equal to 1.8.
Wherein, the higher material of material preferred index of the first optical coupling layer 5 and the second optical coupling layer 6, comprising: ZnSe, TiO
2, SiO
2, Si
3n
4, Alq
3the composite material of one of them or at least two kinds.
Further, in manufacturing process, make the spacing between adjacent two slits or adjacent two circular holes on the first mask plate reach suitable distance, make evaporation form adjacent two bar shaped semicolumns or adjacent two hemisphere between close contact, thereby further improve external quantum efficiency.
The utility model also provides a kind of OLED display floater, as shown in Figure 2, comprise the anode 2, organic luminous layer 3, negative electrode 4 and the first optical coupling layer 5 that are formed on successively on underlay substrate 1, also comprise: be formed on the second optical coupling layer 6 that the bulge-structure that is cambered surface by some surfaces that described the first optical coupling layer 5 deviates from a side of described negative electrode 4 is arranged in.
Wherein, surface is that the bulge-structure of cambered surface can be the semicolumn of bar shaped, and the diameter of semicolumn is less than the sub-pix width of described display floater.
Surface is that the bulge-structure of cambered surface can also be hemisphere.The aperture of hemisphere is less than the sub-pix width of described display floater.
The thickness of the first optical coupling layer and the second optical coupling layer and be λ/4n, λ is peak luminous wavelength; N is the refractive index of described the first optical coupling layer and the second optical coupling layer.Preferably, n is more than or equal to 1.8.
The first optical coupling layer and the higher material of the second optical coupling layer preferred index, comprising: ZnSe, TiO
2, SiO
2, Si
3n
4, Alq
3the composite material of one of them or at least two kinds.
Above execution mode is only for illustrating the utility model; and be not limitation of the utility model; the those of ordinary skill in relevant technologies field; in the situation that not departing from spirit and scope of the present utility model; can also make a variety of changes and modification; therefore all technical schemes that are equal to also belong to category of the present utility model, and scope of patent protection of the present utility model should be defined by the claims.
Claims (8)
1. an OLED display floater, comprise the anode, organic luminous layer, negative electrode and the first optical coupling layer that are formed on successively on underlay substrate, it is characterized in that, also comprise: be formed on the second optical coupling layer that the bulge-structure that is cambered surface by some surfaces that described the first optical coupling layer deviates from a side of described negative electrode is arranged in.
2. OLED display floater as claimed in claim 1, is characterized in that, the semicolumn that the bulge-structure that described surface is cambered surface is bar shaped.
3. OLED display floater as claimed in claim 2, is characterized in that, the diameter of described semicolumn is less than the sub-pix width of described display floater.
4. OLED display floater as claimed in claim 1, is characterized in that, the bulge-structure that described surface is cambered surface is hemisphere.
5. OLED display floater as claimed in claim 4, is characterized in that, the aperture of described hemisphere is less than the sub-pix width of described display floater.
6. the OLED display floater as described in any one in claim 1～5, is characterized in that, the thickness of described the first optical coupling layer and the second optical coupling layer and be λ/4n, and λ is peak luminous wavelength; N is the refractive index of described the first optical coupling layer and the second optical coupling layer.
7. OLED display floater as claimed in claim 6, is characterized in that, described n is more than or equal to 1.8.
8. the OLED display floater as described in any one in claim 1～5, is characterized in that, the material of described the first optical coupling layer and the second optical coupling layer comprises: ZnSe, TiO
2, SiO
2, Si
3n
4, Alq
3one of them.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320877359.8U CN203690349U (en) | 2013-12-26 | 2013-12-26 | Oled display panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320877359.8U CN203690349U (en) | 2013-12-26 | 2013-12-26 | Oled display panel |
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| Publication Number | Publication Date |
|---|---|
| CN203690349U true CN203690349U (en) | 2014-07-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320877359.8U Expired - Lifetime CN203690349U (en) | 2013-12-26 | 2013-12-26 | Oled display panel |
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| CN (1) | CN203690349U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103715372A (en) * | 2013-12-26 | 2014-04-09 | 京东方科技集团股份有限公司 | Oled display panel and manufacturing method thereof |
| CN105244453A (en) * | 2015-09-22 | 2016-01-13 | 深圳市华星光电技术有限公司 | Organic light-emitting device |
| WO2016065864A1 (en) * | 2014-10-31 | 2016-05-06 | 京东方科技集团股份有限公司 | Oled array substrate and preparation method therefor, display panel, and display device |
| WO2019178782A1 (en) * | 2018-03-21 | 2019-09-26 | 华为技术有限公司 | Display screen and preparation method therefor, and mobile terminal |
-
2013
- 2013-12-26 CN CN201320877359.8U patent/CN203690349U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103715372A (en) * | 2013-12-26 | 2014-04-09 | 京东方科技集团股份有限公司 | Oled display panel and manufacturing method thereof |
| WO2015096351A1 (en) * | 2013-12-26 | 2015-07-02 | 京东方科技集团股份有限公司 | Organic light-emitting diode display panel and manufacturing method therefor |
| US9502691B2 (en) | 2013-12-26 | 2016-11-22 | Boe Technology Group Co., Ltd. | Organic light-emitting diode display panel and manufacturing method thereof |
| WO2016065864A1 (en) * | 2014-10-31 | 2016-05-06 | 京东方科技集团股份有限公司 | Oled array substrate and preparation method therefor, display panel, and display device |
| US9728749B2 (en) | 2014-10-31 | 2017-08-08 | Boe Technology Group Co., Ltd. | OLED array substrate, manufacturing method thereof, display panel and display device |
| CN105244453A (en) * | 2015-09-22 | 2016-01-13 | 深圳市华星光电技术有限公司 | Organic light-emitting device |
| US9887389B2 (en) | 2015-09-22 | 2018-02-06 | Shenzhen China Star Optoelectronics Technology Co., Ltd. | Organic light emitting device |
| WO2019178782A1 (en) * | 2018-03-21 | 2019-09-26 | 华为技术有限公司 | Display screen and preparation method therefor, and mobile terminal |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140702 |
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| CX01 | Expiry of patent term |