CN108054185A - Oled display device and display device - Google Patents
Oled display device and display device Download PDFInfo
- Publication number
- CN108054185A CN108054185A CN201711319534.0A CN201711319534A CN108054185A CN 108054185 A CN108054185 A CN 108054185A CN 201711319534 A CN201711319534 A CN 201711319534A CN 108054185 A CN108054185 A CN 108054185A
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- China
- Prior art keywords
- oled display
- display device
- light
- display panel
- guide plate
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- 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
- H10K59/50—OLEDs integrated with light modulating elements, e.g. with electrochromic elements, photochromic elements or liquid crystal elements
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- Electroluminescent Light Sources (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The invention discloses a kind of OLED display devices, including OLED display panel and the circular polarizing disk being arranged on the light-emitting surface of the OLED display panel, polarized lightwave guide plate is additionally provided between the OLED display panel and the circular polarizing disk, the polarized lightwave guide plate is used to being converted to the light that the OLED display panel is sent into the polarised light that can penetrate the circular polarizing disk.The invention also discloses a kind of display devices, and including driving unit and OLED display device as described above, the driving unit provides drive signal to the OLED display device, so that the OLED display device shows image.
Description
Technical field
The present invention relates to display technology field more particularly to a kind of OLED display devices, further relate to show comprising the OLED
Show the display device of device.
Background technology
Organic electroluminescent LED (Organic light-emitting diodes, OLED) display panel possesses certainly
It shines, the advantages that thickness is thin, visual angle is wide and reaction speed is fast, is the representative of flat panel display technology of new generation, is increasingly subject to industry
The high praise on boundary.
OLED display panel includes the anode layer, organic luminous layer and cathode layer stacked gradually.Wherein, in order to promote electricity
The injection of son simultaneously improves luminous efficiency, prepares to form cathode layer usually using metal material in OLED display panel, such as makes
Cathode is formed with metal materials such as magnesium, magnesium silver alloy and aluminium.However, when external environment light is from the outside of OLED display panel
During injection, since metallic cathode has higher surface reflectivity, a part of incident light is reflected on metallic cathode.In this
Reflection can cause the problem of related with the deterioration of the contrast of OLED display panel and visibility.
In order to solve problem above, it is typically that circular polarization is set on the light-emitting surface of OLED display panel in the prior art
Piece, circular polarizing disk can absorb the reflected light line on metallic cathode, prevent reflection light from being projected from display surface, so as to improve
The problem of contrast and visibility of above-mentioned OLED display panel deteriorate.However, due to OLED display panel in itself
The light sent contains the light of various polarization states, can be considered natural light, the light that OLED display panel is sent is inclined by circle
It shakes after piece, about 60% light is also circularly polarized piece absorption, and brightness can at least decay half, this can cause OLED to show
Showing the brightness of panel significantly reduces.Also, since circular polarizing disk can generate heat during extinction, absorb excessive light
Line is that the temperature of display device is caused to raise, and is unfavorable for the performance that display device keeps stable.
The content of the invention
In view of the deficiencies in the prior art, the present invention provides a kind of OLED display devices, can improve OLED display
The contrast and display brightness of part.
To achieve these goals, present invention employs following technical solutions：
A kind of OLED display device including OLED display panel and is arranged on the light-emitting surface of the OLED display panel
Circular polarizing disk, wherein, polarized lightwave guide plate, the polarization are additionally provided between the OLED display panel and the circular polarizing disk
Light guiding plate is used to being converted to the light that the OLED display panel is sent into the polarised light that can penetrate the circular polarizing disk.
Wherein, the polarized lightwave guide plate includes the first transparency electrode being oppositely arranged and second transparency electrode, is arranged at
Twisted nematic liquid crystal layer between first transparency electrode and second transparency electrode and transparent with first transparency electrode and second
The Polarization Controller that electrode is electrically connected.
Wherein, the twisted nematic liquid crystal layer includes the high molecular polymer of polymerizable twisted nematic liquid crystals molecule.
Wherein, the material of the first transparency electrode and the second transparency electrode is ITO.
Wherein, the circular polarizing disk includes λ/4 set gradually according to the direction for being gradually distance from the polarized lightwave guide plate
Wave plate and linear polarizer.
Wherein, the angle of the light transmission shaft of the fast axle and linear polarizer of the wave plate of the λ/4 is 45 °.
Wherein, OLED display panel includes underlay substrate and the OLED display unit that is formed on the underlay substrate and thin
Film encapsulated layer, the polarized lightwave guide plate and the circular polarizing disk are successively set in the thin-film encapsulation layer.
Wherein, the OLED display unit include being sequentially formed at thin film transistor array layer on the underlay substrate,
Anode layer, organic luminous layer and cathode layer.
Wherein, it is additionally provided with touch screen between the polarized lightwave guide plate and the thin-film encapsulation layer.
Another aspect of the present invention is to provide a kind of display device, is shown including driving unit and OLED as described above
Device, the driving unit provide drive signal to the OLED display device, so that the OLED display device shows image.
OLED display device provided in an embodiment of the present invention is provided with polarization between OLED display panel and circular polarizing disk
Light guiding plate, the light which can send OLED display panel, which is converted to, can penetrate the circular polarizing disk
Polarised light, the overwhelming majority can penetrate the circular polarizing disk and project in the light that thus OLED display panel is sent, and avoid
It is circularly polarized piece to absorb and cause light losing, improves the brightness and contrast of OLED display device.
Description of the drawings
Fig. 1 is a kind of structure diagram of OLED display device provided in an embodiment of the present invention；
Fig. 2 is the structure diagram of the OLED display unit in the embodiment of the present invention；
Fig. 3 is the structure diagram of the circular polarizing disk in the embodiment of the present invention；
Fig. 4 is the structure diagram of the polarized lightwave guide plate in the embodiment of the present invention；
Fig. 5 is the structure diagram of another OLED display device provided in an embodiment of the present invention；
Fig. 6 is the structure diagram of display device provided in an embodiment of the present invention.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with the accompanying drawings to the specific reality of the present invention
The mode of applying is described in detail.The example of these preferred embodiments is illustrated in the accompanying drawings.Shown in attached drawing and according to
What the embodiments of the present invention of attached drawing description were merely exemplary, and the present invention is not limited to these embodiments.
Here, it should also be noted that, in order to avoid because having obscured the present invention during unnecessary details, in the accompanying drawings only
It shows the structure and/or processing step closely related with scheme according to the present invention, and is omitted little with relation of the present invention
Other details.
A kind of OLED display device is present embodiments provided, as shown in Figure 1, the OLED display device is shown including OLED
Panel 1 and the circular polarizing disk 2 being arranged on the light-emitting surface of the OLED display panel 1, the OLED display panel 1 and the circle
Polarized lightwave guide plate 3 is additionally provided between polarizer 2.The light that the OLED display panel 1 is sent is first by the polarization
The conduction of light guiding plate 3, then launch from the circular polarizing disk 2.Wherein, the polarized lightwave guide plate 3 is used for the OLED
The light that display panel 1 is sent is converted to the polarised light that can penetrate the circular polarizing disk 2.
Specifically, as shown in Figure 1, the OLED display panel 1 includes underlay substrate 11 and is formed in the underlay substrate
OLED display unit 12 and thin-film encapsulation layer (Thin Film Encapsulation, TFE) 13 on 11, the polarized lightwave
Guide plate 3 and the circular polarizing disk 2 are successively set in the thin-film encapsulation layer 13.The thin-film encapsulation layer 13 shows the OLED
Show that unit 12 is hermetically encapsulated on the underlay substrate 11, to stop that water in external environment and Oxygen permeation are shown to the OLED
Show that unit 12 causes to corrode.Wherein, the underlay substrate 1 can be with selected as rigid substrates or flexible base board, the rigid substrates
E.g. glass substrate, the flexible base board are, for example, the flexible base board for being prepared and being formed using polyimides (PI).
Wherein, as shown in Fig. 2, the OLED display unit 12 includes being sequentially formed at film crystalline substance on the underlay substrate 11
Volume array layer 121, anode layer 122, organic luminous layer 123 and cathode layer 124 etc..Wherein, the thin film transistor array layer 121
In be provided with each layer such as thin film transistor (TFT), data cable and scan line.The organic luminous layer 123 then includes by organic
The hole transport functional layer (Hole Transport Layer, HTL) of material preparation formation, luminous material layer (Emissive
Layer, EML) and electron-transport functional layer (Electron Transport Layer, ETL) etc..
Wherein, refering to shown in Fig. 1 and Fig. 3, the circular polarizing disk 2 is included according to being gradually distance from the polarized lightwave guide plate 3
The wave plate 21 of λ/4 that sets gradually of direction and linear polarizer 22.The circular polarizing disk 2 can prevent external ambient light from inciding into institute
It is reflected again after stating OLED display panel 1, it is possible thereby to improve the contrast of the OLED display device.Specifically, outside is worked as
Natural light incide into the linear polarizer 22, this some light can penetrate the linear polarizer 22 and reach the ripple of the λ/4
Piece 21, remaining light are then absorbed by the linear polarizer 22.A part of light is polarization direction and the linear polarizer 22
The identical light of light transmission direction of principal axis, form circularly polarized light after the wave plate 21 of λ described in a part of light penetration/4, then by
The cathode layer reflection of the OLED display unit 12, the direction of rotation of circularly polarized light inverts after reflection, and institute is penetrated after reflection
The linearly polarized light formed after the wave plate of λ/4 21 is stated, the polarization direction of linearly polarized light at this time is perpendicular to the linear polarizer 22
Light transmission direction of principal axis can not be projected by the linear polarizer 22 absorption.
In preferred scheme, the fast axle and the angle of the light transmission shaft of the linear polarizer 22 of the wave plate 21 of the λ/4 are
45°。
Wherein, the light that the OLED display unit 12 is sent contains the light of various polarization states, can be considered natural light, because
This, if the light that the OLED display unit 12 is sent is directly incident on the circular polarizing disk 2, wherein a big chunk light
Also absorbed by the circular polarizing disk 2, cause light losing and cause brightness decay.For this purpose, it is passed in the embodiment of the present invention in light
In defeated light path, increase before the circular polarizing disk 2 and be provided with polarized lightwave guide plate 3, the polarized lightwave guide plate 3 can incite somebody to action
The light that OLED display unit 12 is sent is converted to the polarised light that can penetrate the circular polarizing disk 2, thus OLED display unit
The overwhelming majority can penetrate the circular polarizing disk 2 and project in 12 light sent, avoid being circularly polarized piece 2 and absorb and cause light
Line loss is lost, and improves the brightness and contrast of OLED display device.
Specifically, as shown in figure 4, the polarized lightwave guide plate 3 includes the first transparency electrode 31 and second being oppositely arranged
Transparent electrode 32, the twisted nematic liquid crystal layer 33 being arranged between first transparency electrode 31 and second transparency electrode 32 and
The Polarization Controller 34 being electrically connected with first transparency electrode 31 and second transparency electrode 32.Wherein, the twisted nematic
Liquid crystal layer 33 includes the high molecular polymer of polymerizable twisted nematic liquid crystals molecule.In preferred scheme, described first thoroughly
Prescribed electrode 31 and the material of the second transparency electrode 32 are tin indium oxide (ITO).
Specifically, the light that the OLED display unit 12 is sent incides into the polarization from the first transparency electrode 31
Then light guiding plate 3 sequentially passes through the twisted nematic liquid crystal layer 33 and second transparency electrode 32, from the described second transparent electricity
Pole 32 reaches the circular polarizing disk 2 after projecting.Wherein, the Polarization Controller 34 is saturating to the first transparency electrode 31 and second
Prescribed electrode 32 applies voltage, which controls the rotation status of liquid crystal in the twisted nematic liquid crystal layer 33, so as to light
Polarization state converted, the circular polarizing disk 2 can be penetrated by being thus converted to the light that OLED display unit 12 is sent
Polarised light.
In another preferred embodiment, as shown in figure 5, the polarized lightwave guide plate 3 and the OLED display panel 1
Between be additionally provided with touch screen (Touch Panel, TP) 4.Specifically, the touch screen 4 is arranged on the OLED display panel 1
In thin-film encapsulation layer 13 on, then the polarized lightwave guide plate 3 and the circular polarizing disk 2 are successively set on the touch screen 4
On.
The present embodiment additionally provides a kind of display device, as shown in fig. 6, the display device includes 200 He of driving unit
OLED display device 100, the driving unit 200 provides drive signal to the OLED display device 100, so that the OLED
Display device 100 shows image.Wherein, the OLED display device 100 employs the OLED that example offer is performed as described above in the present invention
Display device.
In conclusion OLED display device provided in an embodiment of the present invention, between OLED display panel and circular polarizing disk
Polarized lightwave guide plate is provided with, the light which can send OLED display panel, which is converted to, can penetrate institute
The polarised light of circular polarizing disk is stated, the overwhelming majority can penetrate the circular polarizing disk in the light that thus OLED display panel is sent
It projects, avoids being circularly polarized piece absorption and causing light losing, improve the brightness and contrast of OLED display device.
It should be noted that herein, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any this actual relation or order.Moreover, term " comprising ", "comprising" or its any other variant are intended to
Non-exclusive inclusion, so that process, method, article or equipment including a series of elements not only will including those
Element, but also including other elements that are not explicitly listed or further include as this process, method, article or equipment
Intrinsic element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that
Also there are other identical elements in process, method, article or equipment including the element.
The above is only the specific embodiment of the application, it is noted that for the ordinary skill people of the art
For member, on the premise of the application principle is not departed from, several improvements and modifications can also be made, these improvements and modifications also should
It is considered as the protection domain of the application.
Claims (10)
1. a kind of OLED display device, including OLED display panel and the circle being arranged on the light-emitting surface of the OLED display panel
Polarizer, which is characterized in that polarized lightwave guide plate is additionally provided between the OLED display panel and the circular polarizing disk, it is described
Polarized lightwave guide plate is used to being converted to the light that the OLED display panel is sent into the polarization that can penetrate the circular polarizing disk
Light.
2. OLED display device according to claim 1, which is characterized in that the polarized lightwave guide plate includes being oppositely arranged
First transparency electrode and second transparency electrode, the twisted nematic that is arranged between first transparency electrode and second transparency electrode
Liquid crystal layer and the Polarization Controller being electrically connected with first transparency electrode and second transparency electrode.
3. OLED display device according to claim 2, which is characterized in that the twisted nematic liquid crystal layer includes to gather
Close the high molecular polymer of twisted nematic liquid crystals molecule.
4. OLED display device according to claim 2, which is characterized in that the first transparency electrode and described second is thoroughly
The material of prescribed electrode is ITO.
5. OLED display device according to claim 1, which is characterized in that the circular polarizing disk is included according to being gradually distance from
The wave plate of the λ that the direction of the polarized lightwave guide plate is set gradually/4 and linear polarizer.
6. OLED display device according to claim 5, which is characterized in that the fast axle of the wave plate of the λ/4 and the line are inclined
The angle of light transmission shaft of piece of shaking is 45 °.
7. OLED display device according to claim 1, which is characterized in that OLED display panel includes underlay substrate and shape
Into the OLED display unit and thin-film encapsulation layer on the underlay substrate, the polarized lightwave guide plate and the circular polarizing disk according to
It is secondary to be arranged in the thin-film encapsulation layer.
8. OLED display device according to claim 7, which is characterized in that the OLED display unit includes sequentially forming
Thin film transistor array layer, anode layer, organic luminous layer and cathode layer on the underlay substrate.
9. OLED display device according to claim 7, which is characterized in that the polarized lightwave guide plate and film envelope
Touch screen is additionally provided between dress layer.
10. a kind of display device, which is characterized in that the OLED including driving unit and as described in claim 1-9 is any is shown
Device, the driving unit provide drive signal to the OLED display device, so that the OLED display device shows image.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711319534.0A CN108054185A (en) | 2017-12-12 | 2017-12-12 | Oled display device and display device |
| PCT/CN2018/073017 WO2019114085A1 (en) | 2017-12-12 | 2018-01-17 | Oled display device and display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711319534.0A CN108054185A (en) | 2017-12-12 | 2017-12-12 | Oled display device and display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108054185A true CN108054185A (en) | 2018-05-18 |
Family
ID=62124321
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711319534.0A Pending CN108054185A (en) | 2017-12-12 | 2017-12-12 | Oled display device and display device |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN108054185A (en) |
| WO (1) | WO2019114085A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113433729A (en) * | 2021-06-23 | 2021-09-24 | 京东方科技集团股份有限公司 | Display panel and display device |
| WO2023023971A1 (en) * | 2021-08-25 | 2023-03-02 | 京东方科技集团股份有限公司 | Display panel and display device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001357979A (en) * | 2000-06-15 | 2001-12-26 | Toshiba Corp | El element |
| CN103715217A (en) * | 2012-10-09 | 2014-04-09 | 财团法人工业技术研究院 | Brightening self-luminous display |
| CN106098962A (en) * | 2016-07-08 | 2016-11-09 | 京东方科技集团股份有限公司 | Polarization optics assembly, OLED and preparation method, display device |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20070118765A (en) * | 2006-06-13 | 2007-12-18 | 쓰리엠 이노베이티브 프로퍼티즈 컴파니 | A circular polarizer composite and an optical system comprising the same |
| CN103913912B (en) * | 2014-03-31 | 2017-04-05 | 京东方科技集团股份有限公司 | A kind of display floater and its display control method |
| CN104157217A (en) * | 2014-07-22 | 2014-11-19 | 四川虹视显示技术有限公司 | OLED (organic light emitting diode) device without circular polarizer |
-
2017
- 2017-12-12 CN CN201711319534.0A patent/CN108054185A/en active Pending
-
2018
- 2018-01-17 WO PCT/CN2018/073017 patent/WO2019114085A1/en active Application Filing
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001357979A (en) * | 2000-06-15 | 2001-12-26 | Toshiba Corp | El element |
| CN103715217A (en) * | 2012-10-09 | 2014-04-09 | 财团法人工业技术研究院 | Brightening self-luminous display |
| CN106098962A (en) * | 2016-07-08 | 2016-11-09 | 京东方科技集团股份有限公司 | Polarization optics assembly, OLED and preparation method, display device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113433729A (en) * | 2021-06-23 | 2021-09-24 | 京东方科技集团股份有限公司 | Display panel and display device |
| WO2023023971A1 (en) * | 2021-08-25 | 2023-03-02 | 京东方科技集团股份有限公司 | Display panel and display device |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2019114085A1 (en) | 2019-06-20 |
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Application publication date: 20180518 |