CN105244364A - Organic light emitting device and pixel array - Google Patents
Organic light emitting device and pixel array Download PDFInfo
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- CN105244364A CN105244364A CN201410328155.8A CN201410328155A CN105244364A CN 105244364 A CN105244364 A CN 105244364A CN 201410328155 A CN201410328155 A CN 201410328155A CN 105244364 A CN105244364 A CN 105244364A
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Abstract
The invention provides an organic light emitting device and a pixel array. A red light emitting layer and a blue light emitting layer of which the light emitting materials are closest are put in the same sub pixel to make the light emitting areas of the red light emitting layer and the blue light emitting layer overlap, and light emitting of the primary-color light emitting layers is controlled by different anode electrode layers. Thus, the opening rate of the sub pixels is increased, the light emitting area of each sub pixel is increased, the ppi of an AMOLED can reach the same actual value as a stripe pattern on the premise of keeping the pixel size and resolution unchanged, and a more exquisite display effect is achieved. Meanwhile, the two primary-color light emitting layers of which the light emitting areas overlap can share one organic material evaporation mask in the process of evaporation, so that the development cost of the evaporation mask is reduced, the production cost is lowered, and the economic benefit is improved.
Description
Technical field
The present invention relates to organic luminescent device preparation field, specifically, relate to a kind of organic luminescent device and pel array.
Background technology
In recent years, developed various flat-panel monitor that can reduce weight and volume, due to lightweight, volume is little, thickness thin quilt people liked, be therefore widely used in mobile phone, computer, flat board.At present, flat-panel monitor comprises liquid crystal display (LCD), field-emitter display (FED), plasma display panel (PDP) and organic luminescent device (OLED).
Due to compared with other flat-panel monitors, organic luminescent device (OLED) has larger serviceability temperature scope, higher anti-vibration or vibratility, wider visual angle and more high-speed response, therefore, proposed to it can be used as planar display of future generation, AMOLED is then a kind of product that OLED is the most outstanding.
OLED comprises the organic light emitting display using Organic Light Emitting Diode, and uses the inorganic light emitting displays of inorganic light-emitting diode.Organic Light Emitting Diode comprises anode, negative electrode, and arrange between the anode and the cathode, utilize the luminous organic luminous layer of the compound in electronics and hole.Inorganic light-emitting diode comprises the inorganic light emitting layers be made up of PN junction semiconductor.In an organic light emitting device, the sub-pixel area place formed Zhi a Shao ー pixel region on substrate, deposit red (R), green (G) and blue (B) material, and by driving the thin-film transistor formed on substrate, make each sub-pixel area utilizing emitted light.
In current art, the picture element arrangement mode of LCD employing is mainly standard RGB arrangement mode, namely RGB tri-kinds of primary color pixels present stripe stripe-arrangement, as shown in Figure 1, wherein 1 represent red preimage element (R), 2 represent green preimage element (G), and 3 represent blue preimage element (B); Continue as shown in Figure 2, three primary color pixels 1,2,3 share a negative electrode layer 4, and each primary color pixels all realizes controlling the luminance of this primary color pixels by an anode electrode layer.Operationally, each anode electrode layer 1a, 2a, 3a control the luminance of red pixel 1, green preimage element 2, blue preimage element 3 respectively, and human eye by red green blue tricolor pixel is combined viewing, thus obtains the display effect of full color.
But along with people require more and more higher to the fine and smooth degree of screen, resolution constantly promotes, the resolution of current mobile phone can reach 2K (2560 × 1440) rank, and the resolution of TV even can reach 4K (4096 × 2160) level, but AMOLED is (ActiveMatrix/OrganicLightEmittingDiode, active matrix organic light-emitting diode (AMOLED) panel) then because the restriction of organic material evaporation precision, make its resolution cannot reach the 500ppi specification of LCD, also pentile has therefore been had to arrange or diamond arrangement mode, can refer to shown in Fig. 3 ~ Fig. 4, Fig. 3 is the pixel of display floater is the schematic diagram that pentile arranges, Fig. 4 is the pixel of display floater is the schematic diagram that diamond arranges.Pentile arrangement or diamond arrangement mode are by sharing include monochrome pixels, and the spacing between homochromy pixel is increased, to limit in response to precision during organic material evaporation, although but the size of pixel and resolution constant, but actual ppi value is only original 2/3rds, and then affects display effect.
Summary of the invention
The invention discloses a kind of organic luminescent device, by changing the arrangement mode of include monochrome pixels, make the light-emitting area of red organic material and blue organic material overlapping, controlled by the luminance of different anodes to red organic material and blue organic material respectively again, under the prerequisite not changing Pixel Dimensions and definition case, make the actual ppi value that AMOLED still can reach identical with stripe stripe-arrangement.
The technical solution used in the present invention is:
A kind of organic luminescent device, wherein, comprise several pixel regions, and each described pixel region is provided with at least three primary colors luminescent layers, at least three anode electrode layers and a negative electrode layer, wherein: described anode electrode layer is identical with the quantity of described primary colors luminescent layer, and each described anode electrode layer for controlling the luminance of single described primary colors luminescent layer; And
The most close two the described primary colors luminescent layers of luminous efficiency lay respectively at the both sides up and down of described negative electrode layer, make the light-emitting area of these two described primary colors luminescent layers form overlap at least partly.
Above-mentioned organic luminescent device, wherein, is formed with an electron transfer layer between each described primary colors luminescent layer and described negative electrode layer.
Above-mentioned organic luminescent device, wherein, is formed with an electric hole transport layer and electric hole implanted layer between each described primary colors luminescent layer with the corresponding described anode electrode layer controlling described primary colors luminescent layer.
Above-mentioned organic luminescent device, wherein, described electric hole transport layer contacts with described primary colors luminescent layer, and described electric hole implanted layer contacts with described anode electrode layer.
Above-mentioned organic luminescent device, wherein, is formed with pixel defining layer between adjacent two described anode electrode layers of transport layer side, same described electric hole.
Above-mentioned organic luminescent device, wherein, each described pixel defining layer and each described anode electrode layer contacted with described pixel defining layer are all positioned at the top of a tft layer.
Above-mentioned organic luminescent device, wherein, described tft layer is positioned at the top of a glass substrate.
Above-mentioned organic luminescent device, wherein, three the described primary colors luminescent layers being arranged at each described pixel region at least comprise red, green, blue luminescent layer, wherein, described red light emitting layer and described blue light-emitting layer are positioned at the both sides of described negative electrode layer, make the light-emitting area of described red light emitting layer and described blue light-emitting layer form overlap at least partly.
Above-mentioned organic luminescent device, wherein, described red light emitting layer and described green light emitting layer are positioned at the upper surface of same electric hole transport layer.
Above-mentioned organic luminescent device, wherein, described blue light-emitting layer and described green light emitting layer are positioned at the upper surface of same electric hole transport layer
Present invention also offers a kind of pel array simultaneously, wherein, comprise multiple pixel region, all at least comprise three primary colors luminescent layers in each described pixel region, wherein the light-emitting area of at least two described primary colors luminescent layers is overlapping.
Above-mentioned pel array, wherein, each described pixel region at least comprises the different primary colors luminescent layer of red, green, blue three colors.
Above-mentioned pel array, wherein, described red light emitting layer is overlapping with the light-emitting area of described blue light-emitting layer.
Above-mentioned pel array, wherein, each described primary colors luminescent layer is all controlled the luminance of primary colors luminescent layer described in this by an anode electrode layer, and each described primary colors luminescent layer shares a negative electrode layer.
Owing to present invention employs above technical scheme, by two different luminescent layers being arranged on the both sides up and down of negative electrode layer, and realize controlling each luminescent layer by anodic control layer, the aperture opening ratio of sub-pixel can be increased, add the light-emitting area of each sub-pixel simultaneously, under the prerequisite that Pixel Dimensions and resolution remain unchanged, the actual value that the ppi of AMOLED still can be made to reach identical with stripe arrangement mode, brings more fine and smooth display effect; Simultaneously in evaporate process, two primary colors luminescent layers of light-emitting area overlap can share an organic material evaporation mask, and then decrease the development cost of evaporation mask, thus reduce production cost, increase economic efficiency.
Accompanying drawing explanation
By reading the detailed description done non-limiting example with reference to the following drawings, the present invention and feature, profile and advantage will become more obvious.Mark identical in whole accompanying drawing indicates identical part.Deliberately proportionally do not draw accompanying drawing, focus on purport of the present invention is shown.
Fig. 1 is that in prior art, display panel pixel is the schematic diagram of stripe arrangement;
Fig. 2 is the schematic diagram of display floater each sub-pixel area work in prior art;
Fig. 3 is AMOLED display panel pixel is the schematic diagram that pentile arranges;
Fig. 4 is AMOLED display panel pixel is the schematic diagram that brilliant arranges;
Fig. 5 is the schematic cross-section of a kind of display floater provided by the invention;
Fig. 6 is display floater provided by the invention each sub-pixel area operating diagram;
Fig. 7 is the pel array figure of display floater provided by the invention.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is further described:
The invention provides a kind of organic luminescent device, by changing the arrangement mode of sub-pixel, the light-emitting area of luminous efficiency comparatively close two primary colors luminescent layers is made to form overlap, and then the luminescence of two primary colors luminescent layers is realized at a sub-pixel, under Pixel Dimensions and the constant prerequisite of resolution, effectively add ppi value.
Concrete, with reference to shown in Fig. 5, a kind of organic luminescent device, comprise several pixel regions, each pixel region at least comprises three primary colors luminescent layers 10,20, a 30 and negative electrode layer 107, in an embodiment of the present invention, red (R), green (B) of employing standard, the luminescent layer of blue (G) three kinds of colors show as primary colors luminescent layer, and wherein in this embodiment, 10 is red light emitting layer, 20 is green light emitting layer, and 30 is blue light-emitting layer; Two primary colors luminescent layers that wherein luminous efficiency is the most close lay respectively at the both sides up and down of negative electrode layer 107, make the light-emitting area of these two primary colors luminescent layers form overlap at least partly.The organic material of known red light emitting layer 10 and blue light-emitting layer 30 evaporation is the most close, and therefore both luminous efficiencies are also close, therefore selects red light emitting layer 10 and blue light-emitting layer 30 to lay respectively at the both sides up and down of negative electrode layer 107.Wherein, red light emitting layer 10 and blue light-emitting layer 30 are not limited to shown position, and blue light-emitting layer 30 can be positioned at the top of negative electrode layer 107, also can be positioned at the below of negative electrode layer 107.
An electron transfer layer is formed between negative electrode layer 107 and each primary colors luminescent layer, as can be seen, owing to being all positioned at the same side of negative electrode layer 107 between green light emitting layer 20 and red light emitting layer 10, therefore negative electrode layer 107 and green light emitting layer 20 and and red light emitting layer 10 between share the first electron transfer layer 106a; The second electron transfer layer 106b is then formed between negative electrode layer 107 and blue light-emitting layer 30;
In order to control the luminance of each primary colors luminescent layer, also need to provide anode electrode layer to control each primary colors luminescent layer, and the quantity of anode electrode layer is identical with the quantity of each primary colors luminescent layer, as shown in the figure, include three anode electrode layer 10a, 20a, 30a comes to control each primary colors luminescent layer respectively, wherein, anode electrode layer 10a is used for the luminance controlling (redness) luminescent layer 10, anode electrode layer 20a is used for the luminance controlling (green) luminescent layer 20, anode electrode layer 30a is used for the luminance controlling (blueness) luminescent layer 30.
One deck electricity hole transport layer and electric hole implanted layer is all formed between each primary colors luminescent layer and the negative electrode layer controlling this luminescent layer, in this embodiment of the invention, because green light emitting layer 20 and red light emitting layer 10 are all positioned at the downside of negative electrode layer 107, therefore green light emitting layer 20 and be formed with the first shared electric hole transport layer 105a and the first electric hole implanted layer 104a between red light emitting layer 10 and anodic control pole 20a and 10a controlling these two luminescent layers, and be formed with the second electric hole transport layer 105b and the second electric hole implanted layer 104b between blue light-emitting layer 30 and the anode electrode layer 30a controlling blue light-emitting layer.Wherein, electricity hole transport layer contacts with primary colors luminescent layer, electricity hole implanted layer contacts with anode electrode layer, wherein, because the upper-lower position place of red light emitting layer and green light emitting layer is variable, therefore red light emitting layer and green light emitting layer can be positioned at the upper surface of same electric hole transport layer, or blue light-emitting layer and green light emitting layer are positioned at the upper surface of same electric hole transport layer;
In addition, pixel defining layer 103 is formed between adjacent two anode electrode layers of transport layer side, same electric hole, as shown in the figure, pixel defining layer 103 is formed between 10 two anode electrode layer 20a and 10a controlling green light emitting layer 20 and red light emitting layer.
Each pixel defining layer 103 and each anode electrode layer contacted with pixel defining layer are all positioned at the top of a tft layer 102; And this tft layer 102 and all structures be positioned at above tft layer 102 are all positioned on a glass substrate 101.
Fig. 6 is display floater provided by the invention single pixel region operating diagram, shown in composition graphs 5,
This single pixel region includes three primary colors luminescent layers, wherein 10 is red light emitting layer, 20 is green light emitting layer, 30 is blue light-emitting layer, these three primary colors luminescent layers share a negative electrode layer 107, each primary colors luminescent layer controls its luminance by an anodic control layer, namely anode electrode layer 10a controls the luminance of (redness) luminescent layer 10, anode electrode layer 20a controls the luminance of (green) luminescent layer 20, and anode electrode layer 30a controls the luminance of (blueness) luminescent layer 30.When organic luminescent device works, controlled the operating state of each primary colors luminescent layer 10,20,30 by anode electrode layer 10a, 20a, 30a according to the needs of color displays, make red light emitting layer 10 and and blue light-emitting layer 30 carry out single display or show simultaneously, and combining with green luminescent layer 20 and then realize full-color output.
Because redness the most close for two luminescent materials and the upper and lower overlap of blue light-emitting layer are placed in a pixel by the present invention, by different anode electrode layers, light emitting control is carried out to red and blue light-emitting layer again, therefore red sub-pixel and blue subpixels overlap, and then add the light-emitting area of each sub-pixel, improve the true resolution of AMOLED display floater, thus be conducive to the actual ppi value promoting high resolution A MOLED.
Present invention also offers a kind of pel array simultaneously, comprise multiple pixel region, Fig. 7 is the array of figure of single pixel, each pixel region at least comprises the primary colors luminescent layer of red, green, blue three kinds of colors, and as shown in the figure, 10 is red light emitting layer, 20 is green light emitting layer, and 30 is blue light-emitting layer; Wherein the light-emitting area of at least two primary colors luminescent layers is overlapping, and preferably, red light emitting layer 10 is overlapping with 30 light-emitting areas of blue primary luminescent layer;
Wherein, each primary colors luminescent layer is all controlled by the luminance of anode electrode layer to this primary colors luminescent layer, and each primary colors luminescent layer shares a negative electrode layer (specifically can refer to shown in Fig. 5 and Fig. 6).
Composition graphs 6 and Fig. 7 known, the present invention is by being located at the both sides up and down of negative electrode layer 107 by red light emitting layer 10 and blue light-emitting layer 30, make red light emitting layer and the light-emitting area overlap with blue light-emitting layer, according to the needs of color displays, red light emitting layer and and blue light-emitting layer carry out single display or show simultaneously, and combining with green luminescent layer and then realize full-color output.
In sum, owing to present invention employs above technical scheme, by redness the most close for two luminous efficiencies and blue-light-emitting are placed in a sub-pixel, its light-emitting area is made to form overlap, then by different anode electrode layers, each primary colors luminescent layer is controlled, the aperture opening ratio of sub-pixel can be increased, add the light-emitting area of each sub-pixel simultaneously, under the prerequisite that Pixel Dimensions and resolution remain unchanged, the actual value that the ppi of AMOLED still can be made to reach identical with stripe arrangement mode, brings more fine and smooth display effect; Simultaneously in evaporate process, two primary colors luminescent layers of light-emitting area overlap can share an organic material evaporation mask, and then decrease the development cost of evaporation mask, thus reduce production cost, increase economic efficiency.
Above preferred embodiment of the present invention is described.It is to be appreciated that the present invention is not limited to above-mentioned particular implementation, the equipment wherein do not described in detail to the greatest extent and structure are construed as to be implemented with the common mode in this area; Any those of ordinary skill in the art, do not departing under technical solution of the present invention ambit, the Method and Technology content of above-mentioned announcement all can be utilized to make many possible variations and modification to technical solution of the present invention, or being revised as the Equivalent embodiments of equivalent variations, this does not affect flesh and blood of the present invention.Therefore, every content not departing from technical solution of the present invention, according to technical spirit of the present invention to any simple modification made for any of the above embodiments, equivalent variations and modification, all still belongs in the scope of technical solution of the present invention protection.
Claims (14)
1. an organic luminescent device, it is characterized in that, comprise several pixel regions, and each described pixel region is provided with at least three primary colors luminescent layers, at least three anode electrode layers and a negative electrode layer, wherein: described anode electrode layer is identical with the quantity of described primary colors luminescent layer, and each described anode electrode layer for controlling the luminance of single described primary colors luminescent layer; And
The most close two the described primary colors luminescent layers of luminous efficiency lay respectively at the both sides up and down of described negative electrode layer, make the light-emitting area of these two described primary colors luminescent layers form overlap at least partly.
2. organic luminescent device as claimed in claim 1, is characterized in that, be formed with an electron transfer layer between each described primary colors luminescent layer and described negative electrode layer.
3. organic luminescent device as claimed in claim 1, is characterized in that, be formed with an electric hole transport layer and electric hole implanted layer between each described primary colors luminescent layer with the corresponding described anode electrode layer controlling described primary colors luminescent layer.
4. organic luminescent device as claimed in claim 3, it is characterized in that, described electric hole transport layer contacts with described primary colors luminescent layer, and described electric hole implanted layer contacts with described anode electrode layer.
5. organic luminescent device as claimed in claim 4, is characterized in that, between adjacent two described anode electrode layers of transport layer side, same described electric hole, be formed with pixel defining layer.
6. organic luminescent device as claimed in claim 5, it is characterized in that, each described pixel defining layer and each described anode electrode layer contacted with described pixel defining layer are all positioned at the top of a tft layer.
7. organic luminescent device as claimed in claim 6, it is characterized in that, described tft layer is positioned at the top of a glass substrate.
8. organic luminescent device as claimed in claim 1, it is characterized in that, three the described primary colors luminescent layers being arranged at each described pixel region at least comprise red, green, blue luminescent layer, wherein, described red light emitting layer and described blue light-emitting layer are positioned at the both sides of described negative electrode layer, make the light-emitting area of described red light emitting layer and described blue light-emitting layer form overlap at least partly.
9. organic luminescent device as claimed in claim 8, it is characterized in that, described red light emitting layer and described green light emitting layer are positioned at the upper surface of same electric hole transport layer.
10. organic luminescent device as claimed in claim 8, it is characterized in that, described blue light-emitting layer and described green light emitting layer are positioned at the upper surface of same electric hole transport layer.
11. 1 kinds of pel arrays, is characterized in that, comprise multiple pixel region, all at least comprise three primary colors luminescent layers in each described pixel region, and wherein the light-emitting area of at least two described primary colors luminescent layers is overlapping.
12. pel arrays as claimed in claim 11, is characterized in that, each described pixel region at least comprises the different primary colors luminescent layer of red, green, blue three colors.
13. pel arrays as claimed in claim 12, it is characterized in that, described red light emitting layer is overlapping with the light-emitting area of described blue light-emitting layer.
14. pel arrays as claimed in claim 12, is characterized in that, each described primary colors luminescent layer is all controlled the luminance of primary colors luminescent layer described in this by an anode electrode layer, and each described primary colors luminescent layer shares a negative electrode layer.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410328155.8A CN105244364A (en) | 2014-07-10 | 2014-07-10 | Organic light emitting device and pixel array |
| TW104102767A TWI559526B (en) | 2014-07-10 | 2015-01-28 | Organic light-emitting device and pixel array |
| KR1020150084472A KR20160007355A (en) | 2014-07-10 | 2015-06-15 | Organic light-emitting device and pixel array |
| JP2015121882A JP2016018782A (en) | 2014-07-10 | 2015-06-17 | Organic light-emitting element and element arrangement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410328155.8A CN105244364A (en) | 2014-07-10 | 2014-07-10 | Organic light emitting device and pixel array |
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| CN105244364A true CN105244364A (en) | 2016-01-13 |
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| CN201410328155.8A Pending CN105244364A (en) | 2014-07-10 | 2014-07-10 | Organic light emitting device and pixel array |
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|---|---|
| JP (1) | JP2016018782A (en) |
| KR (1) | KR20160007355A (en) |
| CN (1) | CN105244364A (en) |
| TW (1) | TWI559526B (en) |
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| CN107946343A (en) * | 2017-11-15 | 2018-04-20 | 江苏集萃有机光电技术研究所有限公司 | Dot structure and oled panel |
| CN110459130A (en) * | 2019-07-29 | 2019-11-15 | 深圳市华星光电半导体显示技术有限公司 | Combined type display panel |
| WO2024066607A1 (en) * | 2022-09-30 | 2024-04-04 | 武汉华星光电技术有限公司 | Display backplane and display device |
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| CN108598120A (en) * | 2018-04-27 | 2018-09-28 | 京东方科技集团股份有限公司 | Display base plate and its manufacturing method, display panel and display device |
| US11621253B2 (en) * | 2018-11-02 | 2023-04-04 | Seoul Viosys Co., Ltd. | Light emitting device |
| JP7360272B2 (en) * | 2019-08-19 | 2023-10-12 | 株式会社ジャパンディスプレイ | display device |
| US11798974B2 (en) * | 2019-09-27 | 2023-10-24 | Seoul Viosys Co., Ltd. | Light emitting device for display and display apparatus having the same |
| KR20210081761A (en) * | 2019-12-24 | 2021-07-02 | 엘지디스플레이 주식회사 | Light emitting diode(LED) display device and method for manufacturing LED |
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Also Published As
| Publication number | Publication date |
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| JP2016018782A (en) | 2016-02-01 |
| TWI559526B (en) | 2016-11-21 |
| KR20160007355A (en) | 2016-01-20 |
| TW201603261A (en) | 2016-01-16 |
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