CN202972780U - Backlight source and display device - Google Patents
Backlight source and display device Download PDFInfo
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- CN202972780U CN202972780U CN 201220598574 CN201220598574U CN202972780U CN 202972780 U CN202972780 U CN 202972780U CN 201220598574 CN201220598574 CN 201220598574 CN 201220598574 U CN201220598574 U CN 201220598574U CN 202972780 U CN202972780 U CN 202972780U
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- backlight
- polarization
- display unit
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Abstract
The utility model provides a backlight source and a display device, which belong to the technical field of display and can solve the problems such as complex preparation process, high cost, high energy consumption and complex structure of the conventional backlight source and lower polarizer element in manufacturing and use. The backlight source comprises a polarization electroluminescent layer, a cathode layer and an anode layer, wherein the cathode layer is arranged on one side of the polarization electroluminescent layer; and the anode layer is arranged on the other side of the polarization electroluminescent layer. According to the backlight source and the display, the conventional backlight source and lower polarizer element are directly substituted by the backlight source, so that the backlight source and the display have the advantages of capabilities of reducing the energy consumption, simplifying the element structure, reducing the weight and lowering the cost, simple preparation process and the like.
Description
Technical field
The utility model belongs to the Display Technique field, is specifically related to a kind of backlight and display unit.
Background technology
The primary structure of current thin film transistor liquid crystal display (TFT-LCD) (TFT-LCD) as shown in Figure 1, comprise display floater 9 and backlight 10, wherein display floater 9 comprises: two substrates that are oppositely arranged (color membrane substrates 2 and array base palte 4), polaroid (upper polaroid 1 and lower polaroid 5) is arranged respectively in the outside of two substrates, array base palte 4 has underlay substrate 41 and switch element 42, wherein, switch element 42 can be but be not limited to thin film transistor (TFT) and transistor, in the inboard of two substrates, liquid crystal layer 3 be arranged.
Wherein, backlight 10 comprises: LGP 6, reflectance coating 7 and light emitting diode 8.The effect of this backlight 10 is to provide white light source.
For non-self-emitting display (at present, self-emitting display is Organic Electricity laser writer OLED for example), backlight 10 and lower polaroid 5 are the indispensable part of TFT-LCD, but traditional backlight 10 and lower polaroid 5 produce following problem in making and using: 1. the cost of backlight 10 and lower polaroid 5 is higher, and easy to wear in making; 2. power consumption is higher, the light energy of at least 50% backlight 10 be wasted (because backlight will be sent light change linearly polarized light into); 3. descend polaroid 5 easily to produce bubble in the attaching process, introduce particle etc., affect the quality of technique; 4. component structure is complicated, and weight is large.
The utility model content
The purpose of this utility model is to solve that existing backlight and lower polaroid element complicated process of preparation, cost in making and using are high, high, the complex structure and other problems of power consumption, and a kind of alternative Novel backlight and display unit that preparation technology is simple, cost is low, power consumption is low, simple in structure are provided.
Solving the technical scheme that the utility model technical problem adopts is a kind of backlight, comprising: the polarization electroluminescence layer is arranged on the cathode layer of described polarization electroluminescence layer one side and is arranged on the anode layer of described polarization electroluminescence layer opposite side.
In backlight of the present utility model, the polarization electroluminescence layer can directly provide linear white polarised light, so it can directly substitute traditional backlight source and lower polaroid element, thereby have the reduction energy consumption, simplified component structure, weight reduction, reduce costs the advantage such as preparation technology is simple.
Preferably, also be provided with oriented layer between described anode layer and polarization electroluminescence layer or between described cathode layer and polarization electroluminescence layer, the material of described oriented layer comprises polyaniline.
Preferably, the material of described polarization electroluminescence layer comprises the fluorenyl polymer.
Preferably, described anode layer is selected from any one in transparent metal oxide layer, transparent conductive polymer coating, transparent carbon nano-tube film.
Preferably, described cathode layer is transparent Li/Al composite bed or transparent LaB
6Layer.
The utility model also provides a kind of display unit, and this display unit comprises: above-mentioned backlight and display floater, described display floater comprise having the cellular array of opening the light substrate.
Preferably, described backlight is positioned at the outside of described array base palte, and contacts with described array base palte.
Preferably, described backlight and also is provided with insulating barrier between described backlight and described switch element between the underlay substrate and described switch element of described array base palte.
Preferably, described display floater also comprises the color membrane substrates that is oppositely arranged with described array base palte, and the arranged outside of described color membrane substrates has polaroid.
Preferably, the differently-oriented directivity of described polarization electroluminescence layer is parallel or vertical with the polarization axle of described polaroid.
Backlight of the present utility model and display unit adopt novel backlight, reduce energy consumption, simplify component structure, weight reduction, reduce costs and the advantages such as preparation technology is simple thereby have.
Description of drawings
Fig. 1: traditional TFT-LCD primary structure schematic diagram.
A kind of back light source structure schematic diagram of Fig. 2: the utility model embodiment 1.
The another kind of back light source structure schematic diagram of Fig. 3: the utility model embodiment 1.
A kind of display device structure schematic diagram of Fig. 4: the utility model embodiment 2.
A kind of display device structure schematic diagram of Fig. 5: the utility model embodiment 3.
Wherein: 1. go up polaroid; 2. color membrane substrates; 3. liquid crystal layer; 4. array base palte; 41. underlay substrate; 42. switch element; 5. descend polaroid; 6. LGP; 7. reflectance coating; 8. light emitting diode; 9. display floater; 10. backlight; 11. insulating barrier; 12. cathode layer; 13. polarization electroluminescence layer; 14. anode layer; 15. oriented layer.
The specific embodiment
For making those skilled in the art understand better the technical solution of the utility model, below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Embodiment 1
As shown in Figure 2, the present embodiment provides a kind of backlight, comprising: polarization electroluminescence layer 13 is arranged on the cathode layer 12 of polarization electroluminescence layer 13 1 sides and is arranged on the anode layer 14 of polarization electroluminescence layer 13 opposite sides.Wherein, cathode layer 12 or anode layer 14 are hyaline layer, so that the energy transmissive that polarization electroluminescence layer 13 sends goes out.
Preferably, the material of polarization electroluminescence layer 13 comprises the fluorenyl polymeric material.Concrete, this fluorenyl polymer can fluorenes-(Poly (9 for the diazosulfide alternate copolymer for 9,9-dioctyl is poly-, 9-dioctylfluorene-alt-2,1,3-benzothiadiazole), abbreviation PFBT), also can be 9,9-dioctyl fluorene-4,7-two thiophene-2,1,3-diazosulfide-2,1,3-diazosulfide (Poly (9,9-dioctylfluorene-4,7-bis (2-thienyl)-2,1,3-benzothiadiazole-2,1,3-benzothiadiazole), abbreviation PFO-BT-DBT) etc.
This polarization electroluminescence layer 13 can be that wherein, the concentration of solution is 0.5%-10% by the solution of above-mentioned fluorenyl polymer (dimethylbenzene is solvent) preparation.
Preferably, as shown in Figure 3, be provided with oriented layer 15 between anode layer 14 and polarization electroluminescence layer 13, this oriented layer 15 preferably includes polyaniline material.This oriented layer 15 can be that the solution (1-METHYLPYRROLIDONE is solvent) take polyaniline is the raw material preparation, and wherein, the concentration of solution is 0.5%-20%.Certainly, also oriented layer 15 can be arranged between cathode layer 12 and polarization electroluminescence layer 13, as long as guarantee that the energy transmissive that polarization electroluminescence layer 13 sends goes out.
Preferably, by oriented layer 15 is set, polarization electroluminescence layer 13 directly is orientated, and needn't carries out friction orientation to polarization electroluminescence layer 13 again.This polyaniline material has good hole transport capability, increases the hole between anode layer 14 and polarization electroluminescence layer 13, perhaps increases the hole between cathode layer 12 and polarization electroluminescence layer 13.Complete oriented layer 15 orientations by mechanical friction, can directly send the linear polarization white light after this backlight energising.
Preferably, anode layer is transparent metal oxide layer, for example, and indium tin oxide layer, indium zinc oxide layer etc.Certainly, anode layer also can be transparent conductive polymer coating or transparent carbon nano-tube film.Wherein, transparent conductive polymer coating can be electrically conductive polyaniline layer or the poly-ethylenedioxy thiophene layer of conduction etc.
Preferably, cathode layer can be transparent Li/Al composite bed, and certainly, cathode layer can be also transparent LaB
6Layer, or other metal layer material that is fit in prior art.
The present embodiment provides a kind of display unit, comprise: the backlight of above-described embodiment 1 and display floater, this display floater comprises: array base palte 4, and this array base palte 4 has underlay substrate 41 and switch element 42, and switch element 42 can be controlled the light transmittance of display floater 9 to realize demonstration.Wherein, switch element 42 can be but be not limited to thin film transistor (TFT) and transistor.
As shown in Figure 4, this backlight is positioned at described array base palte 4 outsides, and contacts with array base palte 4.
Wherein, the cathode layer 12 of backlight is hyaline layer, makes the light transmission cathode layer offer display floater.Certainly, be the side near panel if anode layer 14 is positioned at, anode layer 14 also should be hyaline layer, makes the light transmission anode layer offer display floater.
In addition, this display floater can also comprise the color membrane substrates 2 that is oppositely arranged with array base palte 4, is arranged at the upper polaroid 1 in color membrane substrates 2 outsides, is arranged on the liquid crystal layer 3 between array base palte 4 and color membrane substrates 2.
Preferably, the differently-oriented directivity of this polarization electroluminescence layer 13 is parallel or vertical with the polarization axle of described upper polaroid 1, thereby makes display unit be in Chang Bai or often deceive pattern.Certainly, Chang Bai or often black pattern is also relevant with liquid crystal material orientation, liquid crystal material type etc. in display floater is not described in detail at this.
Add different voltages by thin film transistor (TFT) array to the different pixels electrode, can make the transmitance difference through the linearly polarized light of diverse location, the brightness that demonstrates is also different.Because the structure of switch element 42 has multiple different form known, therefore be not described in detail at this.
As shown in Figure 5, the present embodiment provides a kind of display unit, has similar structure to the display unit of embodiment 2, difference both comprises: backlight is between the underlay substrate 41 and switch element 42 of array base palte 4, and also be provided with insulating barrier 11 between backlight and switch element 42, in order to prevent the electrode conduction of lead-in wire, electrode etc. and backlight in switch element 42.
Preferably, insulating barrier 11 can be organic insulator, and the preparation technology of organic insulator is simple, direct formation of film at surface is better, and is combined closely with adjacent component.Certainly, also can adopt other inorganic insulation layer.
That is to say, the display unit reality of embodiment 2 and embodiment 3 has been combined into one with backlight and the existing display floater of embodiment 1, and has cancelled a polaroid in the display floater, thereby has further simplified the structure of display unit, reduce small product size, reduced cost.
Certainly, in the display floater of the display unit of embodiment 2 and embodiment 3, also comprise other structures in conventional display floater, as both alignment layers, liquid crystal layer, black matrix etc., be not described in detail at this.
The preparation method of each layer that above-mentioned backlight and display unit are related can adopt existing any one with technology to carry out, and adopt which kind of preparation method is not emphasis of the present utility model actually.
Be understandable that, above embodiment is only the illustrative embodiments that adopts for principle of the present utility model is described, yet the utility model is not limited to this.For those skilled in the art, in the situation that do not break away from spirit of the present utility model and essence, can make various modification and improvement, these modification and improvement also are considered as protection domain of the present utility model.
Claims (10)
1. a backlight, is characterized in that, comprising: the polarization electroluminescence layer is arranged on the cathode layer of described polarization electroluminescence layer one side and is arranged on the anode layer of described polarization electroluminescence layer opposite side.
2. backlight as claimed in claim 1, is characterized in that, also is being provided with oriented layer between described anode layer and polarization electroluminescence layer or between described cathode layer and polarization electroluminescence layer, and the material of described oriented layer comprises polyaniline.
3. backlight as claimed in claim 1 or 2, is characterized in that, the material of described polarization electroluminescence layer comprises the fluorenyl polymer.
4. backlight as claimed in claim 1 or 2, is characterized in that, described anode layer is selected from any one in transparent metal oxide layer, transparent conductive polymer coating, transparent carbon nano-tube film.
5. backlight as claimed in claim 1 or 2, is characterized in that, described cathode layer is transparent Li/Al composite bed or transparent LaB
6Layer.
6. a display unit, is characterized in that, comprising: the arbitrary described backlight of claim 1-5 and display floater, described display floater comprises the array base palte with switch element.
7. display unit as claimed in claim 6, is characterized in that, described backlight is positioned at the outside of described array base palte, and contact with described array base palte.
8. display unit as claimed in claim 6, is characterized in that, described backlight and also is provided with insulating barrier between described backlight and described switch element between the underlay substrate and described switch element of described array base palte.
9. described display unit as arbitrary in claim 6-8, is characterized in that, described display floater also comprises the color membrane substrates that is oppositely arranged with described array base palte, and the arranged outside of described color membrane substrates has polaroid.
10. display unit as claimed in claim 9, is characterized in that, the differently-oriented directivity of described polarization electroluminescence layer is parallel or vertical with the polarization axle of described polaroid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220598574 CN202972780U (en) | 2012-11-13 | 2012-11-13 | Backlight source and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220598574 CN202972780U (en) | 2012-11-13 | 2012-11-13 | Backlight source and display device |
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|---|---|
| CN202972780U true CN202972780U (en) | 2013-06-05 |
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| CN 201220598574 Expired - Lifetime CN202972780U (en) | 2012-11-13 | 2012-11-13 | Backlight source and display device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103676276A (en) * | 2013-12-12 | 2014-03-26 | 合肥京东方光电科技有限公司 | Display screen and manufacturing method thereof |
| WO2014121551A1 (en) * | 2013-02-06 | 2014-08-14 | 京东方科技集团股份有限公司 | Liquid crystal display screen and preparation method and display device thereof |
| WO2017156798A1 (en) * | 2016-03-15 | 2017-09-21 | 深圳市华星光电技术有限公司 | Luminescent device, backlight module and display apparatus |
| CN107623079A (en) * | 2017-10-31 | 2018-01-23 | 京东方科技集团股份有限公司 | OLED and preparation method thereof, oled display substrate and device |
-
2012
- 2012-11-13 CN CN 201220598574 patent/CN202972780U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014121551A1 (en) * | 2013-02-06 | 2014-08-14 | 京东方科技集团股份有限公司 | Liquid crystal display screen and preparation method and display device thereof |
| CN103676276A (en) * | 2013-12-12 | 2014-03-26 | 合肥京东方光电科技有限公司 | Display screen and manufacturing method thereof |
| WO2015085776A1 (en) * | 2013-12-12 | 2015-06-18 | 京东方科技集团股份有限公司 | Display screen and fabrication method thereof |
| CN103676276B (en) * | 2013-12-12 | 2016-08-17 | 合肥京东方光电科技有限公司 | Display screen and preparation method thereof |
| US9523811B2 (en) | 2013-12-12 | 2016-12-20 | Boe Technology Group Co., Ltd. | Display screen and method for manufacturing the same |
| WO2017156798A1 (en) * | 2016-03-15 | 2017-09-21 | 深圳市华星光电技术有限公司 | Luminescent device, backlight module and display apparatus |
| CN107623079A (en) * | 2017-10-31 | 2018-01-23 | 京东方科技集团股份有限公司 | OLED and preparation method thereof, oled display substrate and device |
| US10673007B2 (en) | 2017-10-31 | 2020-06-02 | Boe Technology Group Co., Ltd. | OLED device and method for manufacturing the same, OLED display panel and device |
| CN107623079B (en) * | 2017-10-31 | 2021-01-29 | 京东方科技集团股份有限公司 | OLED device and preparation method thereof, OLED display substrate and device |
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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 | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130605 |