CN104617227A - Organic light emitting display device - Google Patents
Organic light emitting display device Download PDFInfo
- Publication number
- CN104617227A CN104617227A CN201310540061.2A CN201310540061A CN104617227A CN 104617227 A CN104617227 A CN 104617227A CN 201310540061 A CN201310540061 A CN 201310540061A CN 104617227 A CN104617227 A CN 104617227A
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- organic light
- display device
- emitting display
- light
- conductive electrode
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
- H10K50/86—Arrangements for improving contrast, e.g. preventing reflection of ambient light
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
- H10K50/85—Arrangements for extracting light from the devices
- H10K50/858—Arrangements for extracting light from the devices comprising refractive means, e.g. lenses
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
- H10K50/86—Arrangements for improving contrast, e.g. preventing reflection of ambient light
- H10K50/865—Arrangements for improving contrast, e.g. preventing reflection of ambient light comprising light absorbing layers, e.g. light-blocking layers
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
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- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Electroluminescent Light Sources (AREA)
Abstract
The invention discloses an organic light emitting display device comprising an organic light emitting diode which is composed of a first conductive electrode, an organic electroluminescence unit and a second conductive electrode from bottom to top. A micro lens array is arranged on the second conductive electrode. A buffer material layer is arranged on the micro lens array. A light absorption layer capable of absorbing ambient incident light is arranged on the buffer material layer. A light hole array including a plurality of light holes is arranged in the light absorption layer, and the light absorption layer corresponds to the micro lens array. The micro lens array includes a plurality of micro lenses. Self-emitted light of the organic light emitting diode can be converged through the micro lenses, and emitted out through the light holes. By adopting the organic light emitting display device of the invention, the ambient contrast ratio can be effectively improved, the luminous efficiency of the OLED device can be maintained to the maximum, and the visibility of an AMOLED device in the sunlight can be improved.
Description
Technical field
The present invention relates to a kind of active matrix/organic light emitting display (AMOLED, Active Matrix Organic Light Emitting Diode), particularly relate to a kind of organic light-emitting display device improving contrast.
Background technology
Traditional organic light emitting diode device has that top is luminous and the end is luminous, top illuminating device negative electrode adopts the low work function conductive electrode of half-reflection and half-transmission usually, anode adopts mirror surface metal or the multilayer conductive electrode structure of high work function, and end luminescent device negative electrode adopts the low work function conductive electrode of mirror surface usually, anode adopts transparency conductive electrode, when outdoor environment illumination is mapped to the light output surface of device, most surround lighting will be reflected by negative electrode or anode, thus contrast is poor under ambient light to cause AMOLED.
For organic LED display device, its surround lighting has bad impact for visual effect, and to the elimination of surround lighting in prior art, in display unit, increasing by a light absorbing zone, its reflection can be reduced after making surround lighting be incident to this display unit inside, increase the contrast of display unit.Although this method can eliminate component environment light, also relatively eliminate the self-luminous of part Organic Light Emitting Diode, and not obvious for the change of display unit contrast, improve visual effect limited.Fig. 1 is the another kind of mode eliminating surround lighting in prior art, rotatory polarization sheet 103 is provided with above the Organic Light Emitting Diode be made up of the first conductive electrode 100, organic electroluminescence unit 101 and the second conductive electrode 102, but this mode is comparatively large to OLED self-luminous loss while absorption portion surround lighting, about loses about 50%.
Summary of the invention
In view of this, main purpose of the present invention is to provide the organic light-emitting display device that a kind of visuality is strong, can improve contrast.
For achieving the above object, the invention provides a kind of organic light-emitting display device, it comprises from the bottom to top by the first conductive electrode, the Organic Light Emitting Diode of organic electroluminescence unit and the second conductive electrode composition, microlens array is provided with above this second conductive electrode, cushioned material layer is provided with above this microlens array, the light absorbing zone of energy absorbing environmental incident light is provided with above this cushioned material layer, the unthreaded hole array with multiple unthreaded hole is provided with in this light absorbing zone, this unthreaded hole array is to should microlens array, this microlens array includes multiple lenticule, this lenticule of spontaneous light-transmissive of this Organic Light Emitting Diode can coalescence penetrate by this unthreaded hole.
Described second conductive electrode has light transmission, and this second conductive electrode is negative electrode layer or anode electrode layer.
The refraction coefficient of described microlens array is greater than the refraction coefficient of described cushioned material layer.
The refraction coefficient of described microlens array is between 1.65 to 2.0, and the refraction coefficient of described cushioned material layer is between 1.5 to 1.6.
Lenticular diameter described in each is 2 ~ 5 microns, and it is highly 5 ~ 6 microns, and unthreaded hole diameter described in each is 3 microns.
The thickness size of described cushioned material layer is in each this lenticule focal range.
Described lenticule focal length is 7 ~ 10 microns.
The material of described light absorbing zone is black resin or molybdenum oxide.
The material of described cushioned material layer is acrylic resin, epoxy resin or silicon.
Be provided with array base palte below described first conductive electrode, above described light absorbing zone, be provided with transparent base plate for packaging.
The present invention can promote AMOLED device contrast under ambient light, at utmost reduces the self luminous loss of OLED simultaneously, and structure is simple, reduces cost.Because microlens array has the effect of optically focused, the light intensity by unthreaded hole capable of increasing self light emitting, can reduce the brightness of OLED, thus extends device lifetime.
Accompanying drawing explanation
Fig. 1 is the structural section schematic diagram of conventional organic luminescence display;
Fig. 2 A is the cross section structure schematic diagram of organic light-emitting display device first embodiment of the present invention;
Fig. 2 B is the enforcement state diagram of organic light-emitting display device first embodiment of the present invention;
Fig. 3 A is the cross section structure schematic diagram of organic light-emitting display device second embodiment of the present invention;
Fig. 3 B is the enforcement state diagram of organic light-emitting display device second embodiment of the present invention.
Embodiment
For ease of having further understanding to structure of the present invention and the effect that reaches, the existing preferred embodiment that develops simultaneously by reference to the accompanying drawings is described in detail as follows.
As shown in Figure 2 A, it is the cross section structure schematic diagram of organic light-emitting display device first embodiment of the present invention, and it only demonstrates this display unit partial cross section structure of a corresponding Organic Light Emitting Diode unit.Organic light-emitting display device of the present invention comprises the first conductive electrode 200, organic electroluminescence unit 201, second conductive electrode 202, microlens array 203, cushioned material layer 204 from the bottom to top successively, has the light absorbing zone 205 of unthreaded hole array, and wherein this first conductive electrode 200, organic electroluminescence unit 201 and the second conductive electrode 202 form Organic Light Emitting Diode (OLED).This second conductive electrode 202 has light transmission, and is positioned at the top of organic electroluminescence unit 201, and this second conductive electrode 202 can be negative electrode layer or anode electrode layer.This microlens array 203 is between the second conductive electrode 202 and cushioned material layer 204, and each Organic Light Emitting Diode unit comprises a plurality of lenticule.The refraction coefficient of this microlens array 203 is greater than the refraction coefficient of this cushioned material layer 204, and the refraction coefficient of this microlens array 203 is between 1.65 to 2.0, and the refraction coefficient of this cushioned material layer 204 is between 1.5 to 1.6.The material of this cushioned material layer 204 is acrylic resin, epoxy resin or silicon, this light absorbing zone 205 is positioned at the top of cushioned material layer 204, the material of this light absorbing zone 205 can be black resin or molybdenum oxide (MOx), the unthreaded hole array 206 of the multiple unthreaded hole of tool is provided with in light absorbing zone 205, the corresponding microlens array 203 of this unthreaded hole array 206, and the self-luminous of OLED can pass through lenticule penetrates from this unthreaded hole.When surround lighting is incident to this display unit inside from top, most surround lighting is directly absorbed by light absorbing zone 205, reaches the effect eliminating surround lighting, thus can improve the contrast of this display unit.As shown in Figure 2 B, when OLED(organic light emitting display) self-luminous is when penetrating from device inside, can be focused in a corresponding aforementioned unthreaded hole after each this lenticule for making OLED self-luminous, preferably, each this lenticular diameter is 2 ~ 5 microns (μm) and be highly 5 ~ 6 microns, each this unthreaded hole diameter is 3 microns, and cushioned material layer 204 thickness size is better in each this lenticule focal range, and this lenticule focal length size is preferably 7 ~ 10 microns.As mentioned above, the OLED self-luminous of outgoing can be incident upon in the unthreaded hole of corresponding unthreaded hole array 206 via the focusing of this microlens array 203, thus make OLED self-luminous can whole loss-free outgoing to device surface, the explanation of composition graphs 2A and Fig. 2 B, the present invention can reach and not lose under self luminous prerequisite, improves the environmental Comparison degree of device to greatest extent.
Fig. 3 A is organic light-emitting display device second specific embodiment cross section structure schematic diagram of the present invention, and Fig. 3 B is the enforcement state diagram of organic light-emitting display device second embodiment of the present invention.This organic light-emitting display device is from bottom to top respectively array base palte 301, first conductive electrode 302, organic electroluminescence unit 303, second conductive electrode 304, microlens array 305, cushioned material layer 306, there is the light absorbing zone 307 of unthreaded hole array 308, and transparent enclosure substrate 309, this unthreaded hole array 308 has multiple unthreaded hole, the difference of this embodiment and a upper embodiment is whole microlens array 305 and light absorbing zone 307 to be placed in OLED packaging, the environmental Comparison degree of this organic luminescent device can be improved, the protective capability to light absorbing zone and overall microlens array structure can be promoted again.
Active array organic light emitting display device provided by the invention, at OLED light output surface, one light absorbing zone (its material can be black resin or molybdenum oxide etc.) is set, this light absorbing zone is provided with most unthreaded holes simultaneously, lens arra is arranged with at this light absorbing zone, make the self-luminous of OLED focus on this unthreaded hole place outgoing, and surround lighting major part is absorbed by light absorbing zone.Utilize the present invention, AMOLED device contrast under ambient light can be promoted, at utmost reduce the self luminous loss of OLED simultaneously, and reduce the use of polaroid, make organic light-emitting display device structure of the present invention simple, reduce cost.And have the effect of optically focused, the light intensity by unthreaded hole capable of increasing self light emitting due to microlens array, the brightness of OLED can be reduced, thus extend device lifetime.
The above, be only preferred embodiment of the present invention, be not intended to limit protection scope of the present invention.
Claims (10)
1. an organic light-emitting display device, it comprises from the bottom to top by the first conductive electrode, the Organic Light Emitting Diode of organic electroluminescence unit and the second conductive electrode composition, it is characterized in that, microlens array is provided with above this second conductive electrode, cushioned material layer is provided with above this microlens array, the light absorbing zone of energy absorbing environmental incident light is provided with above this cushioned material layer, the unthreaded hole array with multiple unthreaded hole is provided with in this light absorbing zone, this unthreaded hole array is to should microlens array, this microlens array includes multiple lenticule, this lenticule of spontaneous light-transmissive of this Organic Light Emitting Diode can coalescence penetrate by this unthreaded hole.
2. organic light-emitting display device as claimed in claim 1, it is characterized in that, described second conductive electrode has light transmission, and this second conductive electrode is negative electrode layer or anode electrode layer.
3. organic light-emitting display device as claimed in claim 1, it is characterized in that, the refraction coefficient of described microlens array is greater than the refraction coefficient of described cushioned material layer.
4. organic light-emitting display device as claimed in claim 3, it is characterized in that, the refraction coefficient of described microlens array is between 1.65 to 2.0, and the refraction coefficient of described cushioned material layer is between 1.5 to 1.6.
5. organic light-emitting display device as claimed in claim 1, it is characterized in that, lenticular diameter described in each is 2 ~ 5 microns, and it is highly 5 ~ 6 microns, and unthreaded hole diameter described in each is 3 microns.
6. organic light-emitting display device as claimed in claim 1, it is characterized in that, the thickness size of described cushioned material layer is in each this lenticule focal range.
7. organic light-emitting display device as claimed in claim 6, it is characterized in that, described lenticule focal length is 7 ~ 10 microns.
8. organic light-emitting display device as claimed in claim 1, it is characterized in that, the material of described light absorbing zone is black resin or molybdenum oxide.
9. organic light-emitting display device as claimed in claim 1, it is characterized in that, the material of described cushioned material layer is acrylic resin, epoxy resin or silicon.
10. organic light-emitting display device as claimed in claim 1, is characterized in that, be provided with array base palte, be provided with transparent base plate for packaging above described light absorbing zone below described first conductive electrode.
Priority Applications (1)
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| CN201310540061.2A CN104617227A (en) | 2013-11-05 | 2013-11-05 | Organic light emitting display device |
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| CN201310540061.2A CN104617227A (en) | 2013-11-05 | 2013-11-05 | Organic light emitting display device |
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| CN104617227A true CN104617227A (en) | 2015-05-13 |
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| CN201310540061.2A Pending CN104617227A (en) | 2013-11-05 | 2013-11-05 | Organic light emitting display device |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106328669A (en) * | 2015-06-24 | 2017-01-11 | 上海和辉光电有限公司 | Organic light emitting display device |
| CN106856224A (en) * | 2015-12-08 | 2017-06-16 | 昆山国显光电有限公司 | Top illuminating device and preparation method thereof |
| CN107331684A (en) * | 2017-06-27 | 2017-11-07 | 联想(北京)有限公司 | A kind of display unit, method and display device |
| CN107492281A (en) * | 2017-08-21 | 2017-12-19 | 北京华文众合科技有限公司 | Display device and digitlization desk |
| CN108807718A (en) * | 2018-08-30 | 2018-11-13 | 武汉天马微电子有限公司 | Organic light emitting display panel and display device |
| CN109935726A (en) * | 2019-03-19 | 2019-06-25 | 京东方科技集团股份有限公司 | Organic light emitting display panel, its manufacturing method and display device |
| CN110010789A (en) * | 2017-12-19 | 2019-07-12 | 乐金显示有限公司 | Organic light emitting diode display |
| CN110111683A (en) * | 2019-04-24 | 2019-08-09 | 浙江大学 | A kind of ultra-thin Unidirectional transparent screen and its design method |
| CN110364641A (en) * | 2019-08-20 | 2019-10-22 | 昆山工研院新型平板显示技术中心有限公司 | Display panel and display device |
| WO2020010535A1 (en) * | 2018-07-11 | 2020-01-16 | 深圳市柔宇科技有限公司 | Flexible display panel and flexible display device |
| CN113272730A (en) * | 2018-07-13 | 2021-08-17 | 深圳市柔宇科技股份有限公司 | Display panel and display device |
| CN114141837A (en) * | 2021-11-25 | 2022-03-04 | 武汉华星光电技术有限公司 | OLED display module and display terminal |
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Cited By (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106328669A (en) * | 2015-06-24 | 2017-01-11 | 上海和辉光电有限公司 | Organic light emitting display device |
| CN106856224A (en) * | 2015-12-08 | 2017-06-16 | 昆山国显光电有限公司 | Top illuminating device and preparation method thereof |
| CN106856224B (en) * | 2015-12-08 | 2019-05-17 | 昆山国显光电有限公司 | Top illuminating device and preparation method thereof |
| CN107331684B (en) * | 2017-06-27 | 2020-05-26 | 联想(北京)有限公司 | Display unit, method and display equipment |
| CN107331684A (en) * | 2017-06-27 | 2017-11-07 | 联想(北京)有限公司 | A kind of display unit, method and display device |
| CN107492281A (en) * | 2017-08-21 | 2017-12-19 | 北京华文众合科技有限公司 | Display device and digitlization desk |
| CN107492281B (en) * | 2017-08-21 | 2023-09-05 | 北京华文众合科技有限公司 | Display device and digital desk |
| US10957877B2 (en) | 2017-12-19 | 2021-03-23 | Lg Display Co., Ltd. | Organic light emitting diode display |
| CN110010789B (en) * | 2017-12-19 | 2021-08-10 | 乐金显示有限公司 | Organic light emitting diode display |
| CN110010789A (en) * | 2017-12-19 | 2019-07-12 | 乐金显示有限公司 | Organic light emitting diode display |
| WO2020010535A1 (en) * | 2018-07-11 | 2020-01-16 | 深圳市柔宇科技有限公司 | Flexible display panel and flexible display device |
| CN112544001A (en) * | 2018-07-11 | 2021-03-23 | 深圳市柔宇科技股份有限公司 | Flexible display panel and flexible display device |
| CN112544001B (en) * | 2018-07-11 | 2022-10-21 | 深圳市柔宇科技股份有限公司 | Flexible display panel and flexible display device |
| CN113272730A (en) * | 2018-07-13 | 2021-08-17 | 深圳市柔宇科技股份有限公司 | Display panel and display device |
| CN108807718A (en) * | 2018-08-30 | 2018-11-13 | 武汉天马微电子有限公司 | Organic light emitting display panel and display device |
| CN112750963A (en) * | 2018-08-30 | 2021-05-04 | 武汉天马微电子有限公司 | Organic light emitting display panel and display device |
| WO2020186968A1 (en) * | 2019-03-19 | 2020-09-24 | 京东方科技集团股份有限公司 | Light-emitting display panel and method for manufacturing same, and display apparatus |
| CN109935726A (en) * | 2019-03-19 | 2019-06-25 | 京东方科技集团股份有限公司 | Organic light emitting display panel, its manufacturing method and display device |
| CN110111683B (en) * | 2019-04-24 | 2021-02-23 | 浙江大学 | Ultrathin one-way light-transmitting screen and design method thereof |
| CN110111683A (en) * | 2019-04-24 | 2019-08-09 | 浙江大学 | A kind of ultra-thin Unidirectional transparent screen and its design method |
| CN110364641B (en) * | 2019-08-20 | 2021-09-21 | 昆山工研院新型平板显示技术中心有限公司 | Display panel and display device |
| CN110364641A (en) * | 2019-08-20 | 2019-10-22 | 昆山工研院新型平板显示技术中心有限公司 | Display panel and display device |
| CN114141837A (en) * | 2021-11-25 | 2022-03-04 | 武汉华星光电技术有限公司 | OLED display module and display terminal |
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