CN203398117U - Electroluminescent device and display device - Google Patents
Electroluminescent device and display device Download PDFInfo
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- CN203398117U CN203398117U CN201320539650.4U CN201320539650U CN203398117U CN 203398117 U CN203398117 U CN 203398117U CN 201320539650 U CN201320539650 U CN 201320539650U CN 203398117 U CN203398117 U CN 203398117U
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- electroluminescent device
- luminescent layer
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- transparent
- pixel cell
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Abstract
The utility model relates to an electroluminescent device and a display device. The electroluminescent device includes a substrate base board, on which a plurality of pixel units in array distribution are arranged on the substrate base board. Each pixel unit is provided with subpixel units, and the subpixel units are provided with electroluminescent mechanisms. Each electroluminescent mechanism includes a transparent anode, a light emitting layer, and a transparent cathode which are arranged on the substrate base board in sequence. The electroluminescent mechanism of each subpixel is divided into a photic zone and a reflection zone, and the reflection zone of the electroluminescent mechanism is provided with a reflection layer. In the electroluminescent device, transparent display is achieved through arranging the photic zone in each subpixel unit, and the photic zone used for achieving transparent display can also be used for display, so that utilization rate of the photic zone is increased, and display effect of the electroluminescent device is improved.
Description
Technical field
The utility model relates to transparent Display Technique field, particularly a kind of electroluminescent device and display unit.
Background technology
The transparent demonstration of display unit is the technique direction of the focus of demonstration field comparison in recent years, liquid crystal indicator TFT-LCD and active electroluminescent device AMOLED can realize transparent demonstration, wherein the transparent display effect of AMOLED device is better, is the research direction of transparent Display Technique main flow.
In prior art, in the transparent demonstration of AMOLED device, by blank window, realize, in each pixel cell of AMOLED device or some pixel cells, a transparent window is set, in transparent window, do not prepare OLED or in transparency window, prepare OLED still the OLED in transparent window is not driven, and then realize transparent demonstration.
In prior art, AMOLED device is realized in the scheme of transparent demonstration, and the transparent window region in AMOLED device can not be utilized, and only as transmission region, uses.
Utility model content
The utility model provides a kind of electroluminescent device and display unit, this electroluminescent device can be realized transparent demonstration, and in electroluminescent device, for realizing the transparent area of transparent demonstration, can also show, improve the utilance to transparent area, improve the display effect of electroluminescent device.
For achieving the above object, the utility model provides following technical scheme:
, comprising: underlay substrate, on described underlay substrate, be provided with the pixel cell of a plurality of array distribution, described in each, in pixel cell, there is sub-pix unit, described sub-pix unit has EL structure;
Described EL structure comprises transparent anode, luminescent layer and the transparent cathode being successively set on described underlay substrate;
Described in each, the EL structure of sub-pix unit is divided into transparent area and reflective areas; The described reflective areas of described EL structure has reflector.
In a plurality of sub-pixs unit of each pixel cell that above-mentioned electroluminescent device has, the ray structure of each sub-pix unit all has reflective areas and transparent area, reflective areas has reflector, the transparent anode that ray structure has and the material of transparent cathode are transparent material, when luminescent layer in ray structure is luminous, the part that luminescent layer is corresponding with transparent area also can be luminous, and then in each sub-pix unit, part corresponding to transparent area also can show; The not luminous or luminous compare Ruo Shi， of luminescent layer in ray structure can realize transparent demonstration in transparent area.
Therefore, above-mentioned electroluminescent device can be realized transparent demonstration by the transparent area of each sub-pix unit setting, for realizing the transparent area of transparent demonstration, can also show simultaneously, improve the utilance to transparent area, the effect while improving electroluminescent device demonstration.
Preferably, above-mentioned electroluminescent device can have top emission type structure, and particularly, described reflector is between described transparent anode and described luminescent layer; Or
Described reflector is positioned at the side that described transparent anode deviates from described luminescent layer.
Preferably, in order to realize the colour of electroluminescent device, show to there are three sub-pix unit described in each in pixel cell, and the luminescent layer of three sub-pix unit red-emitting, green glow and blue light respectively.
Preferably, in above-mentioned electroluminescent device, the light of the described luminescent layer transmitting of a plurality of sub-pixs unit described in each in pixel cell is white, and the one side that described luminescent layer deviates from described reflector has colored filter relative with described reflective areas and that with described underlay substrate, box is connected.Above-mentioned electroluminescent device can be realized colored demonstration ，Qie transparent area by colored filter does not have colored filter to block, and does not affect transparent effect when transparent area is transparent to be shown.
Preferably, above-mentioned electroluminescent device can also have end emission type structure, and particularly, described reflector is positioned at the side that described transparent cathode deviates from described luminescent layer.
Preferably, in order to realize the colour of electroluminescent device, show to there are three sub-pix unit described in each in pixel cell, and the luminescent layer of three sub-pix unit red-emitting, green glow and blue light respectively.
Preferably, in above-mentioned electroluminescent device, the light of the described luminescent layer transmitting of a plurality of sub-pixs unit described in each in pixel cell be white, and the one side that described luminescent layer deviates from described reflector has relative with described reflective areas and is formed at the chromatic filter layer on underlay substrate.Above-mentioned electroluminescent device can be realized colored demonstration ，Qie transparent area by the chromatic filter layer of the different colours in each sub-pix unit in a pixel cell does not have chromatic filter layer to block, and does not affect transparent effect when transparent area is transparent to be shown.
Preferably, in order to prevent extraneous water and the oxygen destruction to electroluminescent device, above-mentioned electroluminescent device also comprises luminescent layer encapsulating structure.By luminescent layer encapsulating structure, electroluminescent device is encapsulated, and then electroluminescent device and extraneous water and oxygen are intercepted, reduce water and the oxygen destruction to electroluminescent device.
Preferably, above-mentioned electroluminescent device is active driving, is also provided with thin film transistor switch TFT on described underlay substrate, and the source electrode of described transparent anode and described TFT is electrically connected.
Alternatively, described TFT is a-Si TFT, LTPS TFT, Oxide TFT or organic tft.
The utility model also provides a kind of display unit, and any electroluminescent device providing in technique scheme is provided this display unit.Because above-mentioned electroluminescent device can improve the utilance to transparent area, and then have good display effect, therefore, the display unit with above-mentioned electroluminescent device has good display effect when realizing transparent demonstration.
Accompanying drawing explanation
The electroluminescent device that Fig. 1 provides for the utility model has the structural representation of end emission type structure;
The electroluminescent device that Fig. 2 provides for the utility model has the structural representation that the end arranges colored filter during emission type structure;
The electroluminescent device that Fig. 3 provides for the utility model has a kind of structural representation of top emission type structure;
The electroluminescent device that Fig. 4 provides for the utility model has the another kind of structural representation of top emission type structure;
The structural representation of each sub-pix unit in a pixel cell in the electroluminescent device that Fig. 5 provides for the utility model.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, rather than whole embodiment.Embodiment based in the utility model, those of ordinary skills are not making the every other embodiment obtaining under creative work prerequisite, all belong to the scope of the utility model protection.
Please refer to Fig. 1 and Fig. 5, the electroluminescent device that Fig. 1 provides for the utility model has the structural representation of end emission type structure; The structural representation of each sub-pix unit in a pixel cell in the electroluminescent device that Fig. 5 provides for the utility model.
As shown in Figure 1, the electroluminescent device that the utility model embodiment provides comprises: underlay substrate 6, on underlay substrate 6, be provided with the pixel cell of a plurality of array distribution, have at least three sub-pix unit in each pixel cell, each sub-pix unit has EL structure;
EL structure comprises transparent anode 4, luminescent layer 3 and the transparent cathode 2 being successively set on underlay substrate 6;
As shown in Figure 5, the EL structure of each sub-pix unit is divided into transparent area A and reflective areas C; The reflective areas C of EL structure has reflector 1.
In a plurality of sub-pixs unit of each pixel cell that above-mentioned electroluminescent device has, the ray structure of each sub-pix unit all has reflective areas C and transparent area A, reflective areas C has reflector 1, the transparent anode 4 that ray structure has and the material of transparent cathode 2 are transparent material, when luminescent layer 3 in ray structure is luminous, the part that luminescent layer 3 is corresponding with transparent area A also can be luminous, and then the part that in each sub-pix unit, transparent area A is corresponding also can show; Luminescent layer 3 in ray structure is not luminous or luminous when weak, and the light of electroluminescent device opposite side can see through transparent area A, and now transparent area A can realize transparent demonstration.
Therefore, above-mentioned electroluminescent device can be realized transparent demonstration by the transparent area A of each sub-pix unit setting, for realizing the transparent area A of transparent demonstration, can also show simultaneously, improve the utilance to transparent area A, the effect while improving electroluminescent device demonstration.
The concrete structure of the electroluminescent device that above-mentioned execution mode provides can have multiple choices, as:
Mode one: please refer to Fig. 3 and Fig. 4, the electroluminescent device that Fig. 3 provides for the utility model has a kind of structural representation of top emission type structure; The electroluminescent device that Fig. 4 provides for the utility model has the another kind of structural representation of top emission type structure.
In a kind of preferred implementation, above-mentioned electroluminescent device can have top emission type structure, and particularly, as shown in Figure 3, reflector 1 can be between transparent anode 4 and luminescent layer 3; Or
As shown in Figure 4, reflector 1 is positioned at the side that transparent anode 4 deviates from luminescent layer 3.
Reflector 1 is between transparent anode 4 and luminescent layer 3 time, and when part that luminescent layer 3 is corresponding with reflective areas C is luminous, the light of directive underlay substrate 6 directions can be reflected layer 1 reflection to a side that deviates from underlay substrate 6, realizes top transmitting; In like manner, when reflector 1 is positioned at transparent anode 4 and deviates from a side of luminescent layer 3, when part that luminescent layer 3 is corresponding with reflective areas C is luminous, the light of directive underlay substrate 6 directions is reflected layer 1 reflection to a side that deviates from underlay substrate 6 after seeing through transparent anode 4, realizes top and launches.
On the basis of aforesaid way one, in order to realize the colour of electroluminescent device, show, in a kind of preferred implementation, in each pixel cell, there are three sub-pix unit, the luminescent layer of three sub-pix unit is red-emitting, green glow and blue light respectively, tri-sub-pix unit of RGB as shown in Figure 5.
Certainly, each pixel cell can also have four sub-pix unit, and the color of the light of luminescent layer 3 transmittings of each sub-pix unit is respectively red, green, blue and yellow.The colour that the color difference of the light of luminescent layer 3 transmittings of each sub-pix unit in a pixel cell can realize electroluminescent device shows.
On the basis of aforesaid way one, in another kind of preferred implementation, the light of luminescent layer 3 transmittings of a plurality of sub-pixs unit in above-mentioned electroluminescent device in each pixel cell can also be white, and the one side that luminescent layer 3 deviates from reflector 1 has colored filter relative with reflective areas C and that be connected with 6 pairs of boxes of underlay substrate.Above-mentioned electroluminescent device can be realized the colored ，Qie transparent area A of demonstration by colored filter does not have colored filter to block, and does not affect transparent effect when transparent area A is transparent to be shown.
When the light of luminescent layer 3 transmittings of a plurality of sub-pixs unit in above-mentioned electroluminescent device in each pixel cell is white, can also be by preparation at underlay substrate 6 Shang,Yu reflective areas C relatively and be positioned at the chromatic filter layer that luminescent layer 3 deviates from reflector 1 one sides, and the color of the chromatic filter layer of each sub-pix unit in a pixel cell is different.Can realize equally colored demonstration.
Mode two: please refer to Fig. 1, above-mentioned electroluminescent device can also have end emission type structure, particularly, reflector 1 is positioned at the side that transparent cathode 2 deviates from luminescent layer 3.
Reflector 1 is positioned at the side that transparent cathode 2 deviates from luminescent layer 3, when luminescent layer 3 part corresponding with reflective areas C is luminous, the light of directive reflector 1 direction can be reflected layer 1 reflection to a side of underlay substrate 6, and see through underlay substrate 6 ejaculation electroluminescent devices, realize end transmitting.
On the basis of aforesaid way two, in a kind of preferred implementation, in order to realize the colour of electroluminescent device, show, please refer to Fig. 1 and Fig. 5, a kind of preferred embodiment in, each pixel cell has three sub-pix unit, and the color of the light of luminescent layer 3 transmittings of three sub-pix unit is respectively red, green and blue.
Certainly, in another preferred embodiment, each pixel cell can also have four sub-pix unit, and the color of the light of luminescent layer 3 transmittings of each sub-pix unit is respectively red, green, blue and yellow.The colour that the color difference of the light of luminescent layer 3 transmittings of each sub-pix unit in a pixel cell can realize electroluminescent device shows.
Please refer to Fig. 2, on the basis of aforesaid way two, in another kind of preferred implementation, the light of luminescent layer 3 transmitting of a plurality of sub-pixs unit in above-mentioned electroluminescent device in each pixel cell can also be white, and the one side that luminescent layer 3 deviates from reflector 1 has relative with reflective areas C and is formed at the chromatic filter layer 9 on underlay substrate 6.Above-mentioned electroluminescent device can be realized the colored ，Qie transparent area A of demonstration by the chromatic filter layer 9 of the different colours in each sub-pix unit in a pixel cell does not have chromatic filter layer 9 to block, and can improve transparent effect when transparent area A is transparent to be shown.
When the light of luminescent layer 3 transmittings of a plurality of sub-pixs unit in above-mentioned electroluminescent device in each pixel cell is white, the colored demonstration of colored filter realization that can also deviate from luminescent layer one side, be connected with 6 pairs of boxes of underlay substrate by being positioned at above-mentioned underlay substrate 6.
Please continue to refer to Fig. 1, preferably, in order to prevent extraneous water and the oxygen destruction to electroluminescent device, above-mentioned electroluminescent device also comprises luminescent layer encapsulating structure 8.By 8 pairs of electroluminescent devices of luminescent layer encapsulating structure, encapsulate, and then electroluminescent device and extraneous water and oxygen are intercepted, reduce water and the oxygen destruction to electroluminescent device.
Please continue to refer to Fig. 1, above-mentioned electroluminescent device is active driving, is also provided with thin film transistor switch TFT7 on underlay substrate 6, and transparent anode 4 is electrically connected to the source electrode 71 of TFT7.
Particularly, have and fill and lead up layer 5 between the source electrode 71 of transparent anode 4 and TFT7, between transparent anode 4 and source electrode 71, via hole is connected.
Alternatively, above-mentioned thin film transistor switch TFT7 can be a-Si TFT, LTPS TFT, Oxide TFT or organic tft.
A kind of display unit with any electroluminescent device providing in the respective embodiments described above is also provided the utility model, and display effect when this display unit is carried out transparent demonstration is better.
Obviously, those skilled in the art can carry out various changes and modification and not depart from spirit and scope of the present utility model the utility model embodiment.Like this, if within of the present utility model these are revised and modification belongs to the scope of the utility model claim and equivalent technologies thereof, the utility model is also intended to comprise these changes and modification interior.
Claims (11)
1. an electroluminescent device, comprising: underlay substrate, on described underlay substrate, be provided with the pixel cell of a plurality of array distribution, and described in each, in pixel cell, there is sub-pix unit, described sub-pix unit has EL structure, it is characterized in that;
Described EL structure comprises transparent anode, luminescent layer and the transparent cathode being successively set on described underlay substrate;
Described in each, the EL structure of sub-pix unit is divided into transparent area and reflective areas; The described reflective areas of described EL structure has reflector.
2. electroluminescent device according to claim 1, is characterized in that, described reflector is between described transparent anode and described luminescent layer; Or
Described reflector is positioned at the side that described transparent anode deviates from described luminescent layer.
3. electroluminescent device according to claim 2, is characterized in that, described in each in pixel cell, has three sub-pix unit, and the luminescent layer of three sub-pix unit red-emitting, green glow and blue light respectively.
4. electroluminescent device according to claim 2, it is characterized in that, the light of the described luminescent layer transmitting of a plurality of sub-pixs unit described in each in pixel cell is white, and the one side that described luminescent layer deviates from described reflector has colored filter relative with described reflective areas and that with described underlay substrate, box is connected.
5. electroluminescent device according to claim 1, is characterized in that, described reflector is positioned at the side that described transparent cathode deviates from described luminescent layer.
6. electroluminescent device according to claim 5, is characterized in that, described in each in pixel cell, has three sub-pix unit, and the luminescent layer of three sub-pix unit red-emitting, green glow and blue light respectively.
7. electroluminescent device according to claim 5, it is characterized in that, the light of the described luminescent layer transmitting of a plurality of sub-pixs unit described in each in pixel cell be white, and the one side that described luminescent layer deviates from described reflector has relative with described reflective areas and is formed at the chromatic filter layer on underlay substrate.
8. electroluminescent device according to claim 1, is characterized in that, also comprises luminescent layer encapsulating structure.
9. according to the electroluminescent device described in claim 1～8 any one, it is characterized in that, be also provided with thin film transistor switch TFT on described underlay substrate, the source electrode of described transparent anode and described TFT is electrically connected.
10. electroluminescent device according to claim 9, is characterized in that, described TFT is a-Si TFT, LTPS TFT, Oxide TFT or organic tft.
11. 1 kinds of display unit, is characterized in that, comprise the electroluminescent device as described in claim 1～10 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320539650.4U CN203398117U (en) | 2013-08-30 | 2013-08-30 | Electroluminescent device and display device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320539650.4U CN203398117U (en) | 2013-08-30 | 2013-08-30 | Electroluminescent device and display device |
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| CN203398117U true CN203398117U (en) | 2014-01-15 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015027575A1 (en) * | 2013-08-30 | 2015-03-05 | 京东方科技集团股份有限公司 | Electroluminescent component and display device |
| CN107293562A (en) * | 2016-03-31 | 2017-10-24 | 上海和辉光电有限公司 | A kind of display device and preparation method thereof |
| CN110164912A (en) * | 2018-07-18 | 2019-08-23 | 京东方科技集团股份有限公司 | A kind of transparent display panel and display device |
-
2013
- 2013-08-30 CN CN201320539650.4U patent/CN203398117U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015027575A1 (en) * | 2013-08-30 | 2015-03-05 | 京东方科技集团股份有限公司 | Electroluminescent component and display device |
| US9245933B2 (en) | 2013-08-30 | 2016-01-26 | Boe Technology Group Co., Ltd. | Electroluminescent (EL) device and display device |
| CN107293562A (en) * | 2016-03-31 | 2017-10-24 | 上海和辉光电有限公司 | A kind of display device and preparation method thereof |
| CN107293562B (en) * | 2016-03-31 | 2020-06-30 | 上海和辉光电有限公司 | Display device and preparation method thereof |
| CN110164912A (en) * | 2018-07-18 | 2019-08-23 | 京东方科技集团股份有限公司 | A kind of transparent display panel and display device |
| US11404488B2 (en) | 2018-07-18 | 2022-08-02 | Hefei Xinsheng Optoelectronics Technology Co., Ltd. | Transparent display panel and display device |
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Granted publication date: 20140115 |