CN207651489U - Display panel and display device - Google Patents
Display panel and display device Download PDFInfo
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- CN207651489U CN207651489U CN201721849391.XU CN201721849391U CN207651489U CN 207651489 U CN207651489 U CN 207651489U CN 201721849391 U CN201721849391 U CN 201721849391U CN 207651489 U CN207651489 U CN 207651489U
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Abstract
The utility model is related to a kind of display panel and display devices.The display panel includes substrate, sub-pixel unit, the first pixel defining layer and the first lyophily film layer, wherein the first pixel defining layer is set to for limiting adjacent same color sub-pixel unit, the first lyophily film layer on the fringe region of the first pixel defining layer.The display panel can prevent short circuit, and the thickness of the light emitting functional layer positioned at adjacent color sub-pixel unit bonding pad can be reduced, even separate the light emitting functional layer on the bonding pad, and then effectively reduce lateral leakage current, improves the resolution ratio and display effect of display panel.
Description
Technical field
The utility model is related to display technology fields, more particularly to a kind of display panel and display device.
Background technology
Organic electroluminescent LED (OLED) has many advantages, such as that self-luminous, reaction is fast, visual angle is wide, brightness is high, frivolous, amount
It is excellent that sub- point luminescent diode (QLED) has that photochromic purity is high, luminous quantum efficiency is high, luminescent color is easily adjusted, service life is grown etc.
Point is two Main ways of current display device research.Using solution processing and fabricating OLED display and QLED displays
Technique has many advantages, such as that at low cost, production capacity is high, is easily achieved large scale, is the important directions of the following display technology development.Meanwhile
Printing technology is considered as realizing the most effective approach of OLED and QLED low costs and the full-color display of large area.
Currently, in printing technology, by concentrating in together adjacent pixel same color sub-pixel, then pass through pixel
The optimization of structure is defined, the deposition region of ink can be expanded, to realize the preparation of high resolution display.It will but use
When the dot structure that same color sub-pixel concentrates in together, each functional layer of the sub-pixel in same ink deposition region is
One entirety easily causes lateral leakage current, and then influences entire display panel contrast and display effect.
Utility model content
Based on this, it is necessary to provide a kind of display panel and display device that can reduce lateral leakage current.
A kind of display panel, including substrate；
Sub-pixel unit on the substrate is set；
The first pixel defining layer in lyophobicity on the substrate is set, and first pixel defining layer is for limiting
The fringe region of adjacent same color sub-pixel unit, first pixel defining layer is equipped with the first lyophily film layer.
The display panel further includes pixel electrode layer in one of the embodiments,；
The pixel electrode layer be set to the substrate on, the first lyophily film layer also cover on the pixel electrode layer with
On the fringe region of the first pixel defining layer interfaces.
The display panel further includes the second pixel defining layer in lyophobicity in one of the embodiments,；
On the substrate, second pixel defining layer is for limiting adjacent pixel for the second pixel defining layer setting
Unit, the pixel unit are made of the sub-pixel unit of multiple same colors.
The display panel further includes the second lyophily film layer in one of the embodiments,；
The second lyophily film layer is set on the juncture area of second pixel defining layer and the pixel electrode layer.
The first lyophily film layer and the second lyophily film layer are silicon nitride film layer in one of the embodiments,.
In one of the embodiments, second pixel defining layer from the bottom being in contact with the substrate to top by
It tapers narrow.
The sub-pixel unit includes light emitting functional layer in one of the embodiments,；
The light emitting functional layer is organic electroluminescent functional layer, quantum dot light emitting functional layer or organic electroluminescence hair
Light functional layer and the quantum dot light emitting functional layer, which combine, is formed by mixed luminescence functional layer.
The display panel further includes top electrode layer in one of the embodiments,；
The top electrode layer covers the light emitting functional layer and second pixel defining layer.
The display panel is bottom emitting display panel in one of the embodiments, and the pixel electrode layer is transparent
Conductive film layer, the top electrode layer are reflection electrode layer；Or
The display panel is top emitting display panel, and the pixel electrode layer is reflective conductive film layer, the top electrode
Layer is transparent conductive film layer.
A kind of display device, including display panel described in any one of the above embodiments.
Above-mentioned display panel includes substrate, sub-pixel unit, the first pixel defining layer and the first lyophily in lyophobicity
Film layer can be reduced wherein the first pixel defining layer in lyophobicity is limited for limiting adjacent same color sub-pixel unit
Positioned at the thickness of the light emitting functional layer of adjacent subpixels unit bonding pad, or even separate the light emitting functional layer on the join domain,
And then lateral leakage current is effectively reduced, improve the resolution ratio and display effect of display panel；Meanwhile first lyophily film layer setting exist
On the fringe region of first pixel defining layer, it can ensure that lighting function ink does not bounce back to display panel in the drying process
On pixel electrode layer, to prevent short circuit.
Description of the drawings
Fig. 1 is the structural schematic diagram of the display panel of an embodiment；
Fig. 2 is the first dot structure schematic diagram of the display panel in Fig. 1；
Fig. 3 is second of dot structure schematic diagram of the display panel in Fig. 1；
Fig. 4 is the structural schematic diagram of the pixel electrode layer of display panel in the production process in Fig. 1；
Fig. 5 is the structural schematic diagram of the pixel defining layer of display panel in the production process in Fig. 1；
Fig. 6 is the structural schematic diagram of the total coating of lyophily of display panel in the production process in Fig. 1；
Fig. 7 is that the structure of display panel the first lyophily film layer in the production process and the second lyophily film layer in Fig. 1 is shown
It is intended to；
Fig. 8 is the status diagram of the display panel depositing light-emitting functional ink in the production process in Fig. 1；
Fig. 9 is that the display panel in Fig. 1 forms the structural schematic diagram after light emitting functional layer in the production process.
Specific implementation mode
The utility model is more fully retouched below with reference to relevant drawings for the ease of understanding the utility model,
It states.The preferred embodiment of the utility model is given in attached drawing.But the utility model can in many different forms come in fact
It is existing, however it is not limited to embodiment described herein.Make public affairs to the utility model on the contrary, purpose of providing these embodiments is
The understanding for opening content is more thorough and comprehensive.
Unless otherwise defined, all of technologies and scientific terms used here by the article is led with the technology for belonging to the utility model
The normally understood meaning of technical staff in domain is identical.Terminology used in the description of the utility model herein only be
The purpose of description specific embodiment, it is not intended that in limitation the utility model.Term as used herein "and/or" includes
Any and all combinations of one or more relevant Listed Items.
Incorporated by reference to Fig. 1, the display panel 10 of an embodiment, including substrate 100, pixel electrode layer 200, pixel define
Layer, the first lyophily film layer 330, light emitting functional layer 400 and top electrode layer 500.
In the present embodiment, there is driving tft array on substrate 100, for driving light emitting component, realize that image is aobvious
Show.Wherein, substrate 100 can be glass substrate or flexible base board.Tft array may include non-crystalline silicon tft array, polycrystalline TFT
Array and metal oxide tft array etc..
Pixel electrode layer 200 is properly termed as bottom electrode layer, and pixel electrode layer 200 is arranged on the substrate 100 in patterning, and
It is connect with driving tft array by connecting hole.
Pixel defining layer includes the first pixel defining layer 310 and the second pixel defining layer 320.Wherein, the first pixel defines
Layer 310 is for limiting adjacent same color sub-pixel unit.Second pixel defining layer 320 is for limiting adjacent different colours picture
Plain unit.Wherein, each pixel unit is made of the sub-pixel unit of multiple same colors.Such as in fig. 2, each pixel list
Member is made of the sub-pixel unit of two same colors.For another example in figure 3, each pixel unit by four same colors sub- picture
Plain unit composition.
Pixel defining layer is the lyophobic layers in lyophobicity, and known lyophobicity material preparation can be used and form, such as can be with
For silica, lyophobicity photoresist or polytetrafluoroethylene (PTFE) etc..Wherein, lyophobicity refers mainly to liquid and is not easy to be made in lyophobicity material
The performance sprawled of the surface of solids.
In addition, the second pixel defining layer 320 is gradually narrowed from the bottom being in contact with substrate 100 to top, thickness is preferred
For 800~1500nm, the deposition region of ink can be expanded, ink is prevented and overflow the feelings for causing different colours sub-pixel colour mixture
Condition improves product yield prepared by printing technology, improves the display effect of display device.
The light emitting functional layer positioned at adjacent subpixels unit bonding pad can be reduced in the first pixel defining layer 310 of lyophobicity
Thickness, or even separate the light emitting functional layer on the region, and then effectively reduce lateral leakage current, improve the resolution of display panel
Rate and display effect.Preferably, the thickness of the first pixel defining layer 310 be 100~500nm, for example, 250nm or 450nm etc.,
More than the thickness of pixel electrode layer 200, to reduce 400 thickness of light emitting functional layer deposited in the first pixel defining layer 310, into
One step reduces the generation of lateral leakage current.
First lyophily film layer 330 is set to the interface edge region with pixel electrode layer 200 in the first pixel defining layer 310
On, to ensure that lighting function ink does not bounce back on pixel electrode layer 200 in the drying process, to prevent short circuit.
Preferably, the first lyophily film layer 330 also cover on pixel electrode layer 200 with 310 interfaces of the first pixel defining layer
Fringe region on, ensure lighting function ink do not bounce back on pixel electrode layer 200 in the drying process, further prevent sending out
Raw short circuit.
Display panel 10 can also include the second lyophily film layer in one of the embodiments,.Second lyophily film layer is set to
On pixel electrode layer 200 and the juncture area of the second pixel defining layer 320, lighting function ink can be further ensured that in drying
It does not bounce back on pixel electrode layer 200 in the process, ink deposits behind this region with good during ensureing printing technology
Spreadability, to form uniform liquid film, to prevent short circuit.
The lyophily of first lyophily film layer 330 and the second lyophily film layer refers mainly to liquid and is easy to made of lyophily material
The performance that the surface of solids is sprawled, such as can be silicon nitride film layer, but it is not limited to silicon nitride film layer.First lyophily film layer 330
Thickness is preferably 50~100nm, such as 50nm or 70nm etc., can make not bounce back to pixel electrode layer in ink curing processes
On 200, prevent short circuit.
In present embodiment, the pixel electrode layer 200, pixel defining layer and the first lyophily film layer 330 that are set on substrate 100
It matches and to form new pixel and define structure.The pixel, which defines structure, can ensure that lighting function ink does not return in the drying process
It is reduced on pixel electrode layer 200, to prevent short circuit；It can reduce positioned at adjacent color sub-pixel unit bonding pad simultaneously
The thickness of light emitting functional layer 400, or even separate the light emitting functional layer 400 of the bonding pad, and then lateral leakage current is effectively reduced, it carries
The resolution ratio and display effect of high display panel.
Each sub-pixel unit includes light emitting functional layer 400.Light emitting functional layer 400 is set on pixel electrode layer 200.
In present embodiment, light emitting functional layer 400 can be organic electroluminescent functional layer, include at least luminescent layer.Luminescent layer
It can be one or more layers function film layer.
Preferably, light emitting functional layer 400 includes hole injection layer, hole transmission layer, the electronic blocking being cascading
Layer, luminescent layer, exciton confining layers, hole blocking layer, electron transfer layer and electron injecting layer, to improve luminous efficiency.At other
In embodiment, light emitting functional layer 400 can also be quantum dot light emitting functional layer or organic electroluminescent functional layer and quantum
Point light emitting functional layer is combined the mixed luminescence functional layer to be formed.
Multiple pixel units are provided on substrate 100, correspondence includes red light-emitting area 410, green light-emitting area respectively
420 and blue light-emitting area 430.Please further combined with Fig. 2, in the present embodiment, two concentrations of red light-emitting area 410 are set
It sets, two 420 concentrated settings of green light-emitting area, two blue light-emitting areas 430 concentrate color setting.In other embodiment
In, such as in dot structure in Fig. 3, display panel 10 may include four red light-emitting areas 410 of concentrated setting respectively,
Four green light-emitting areas 420 and four blue light-emitting areas 430.By the sub-pixel unit concentrated setting of multiple same colors,
The area of each sub-pixel unit can be effectively reduced, and then improves the resolution ratio of display panel and display device.
Top electrode layer 500 is whole to be covered in light emitting functional layer 400 and pixel defining layer.
In the present embodiment, display panel 10 is top emitting display panel, and pixel electrode layer 200 is aluminium, silver, the conjunction of magnesium silver
The materials such as gold and aluminium silver alloy make the metallic conduction film layer to be formed.Top electrode layer 500 can be the materials systems such as ITO, IZO, AZO
Make the metal conductive oxide film layer that is formed, transparent state, or the materials such as graphene, conducting polymer, which make, to be formed
Organic conductive film layer.
In other embodiments, display panel 10 can also be bottom emitting display panel, and pixel electrode layer 200 can be
The materials such as ITO, IZO, AZO make the metal conductive oxide film layer to be formed, or the materials such as graphene, conducting polymer
Make the organic conductive film layer formed.Top electrode layer 500 can be that the materials such as aluminium, silver, magnesium silver alloy and aluminium silver alloy make shape
At metallic conduction film layer.
The production method of the display panel 10 of present embodiment, includes the following steps：
S1 provides the substrate 100 with driving TFT circuit, on the substrate 100 fabricating patterned please further combined with Fig. 4
Pixel electrode layer 200.
S2, please further combined with Fig. 5, what is made on the substrate 100 of lyophobicity material includes the first pixel defining layer
310 and second pixel defining layer 320 pixel defining layer, and make pixel defining layer covering pixel electrode layer 200 edge.
S3, please further combined with Fig. 6 and 7, deposition lyophily always covers in pixel defining layer and pixel electrode layer 200
Layer.
S4, the total coating of lyophily is graphical, and formation is covered in pixel electrode layer 200 and the first pixel defining layer 310
Juncture area on the first lyophily film layer 330, on the juncture area of pixel electrode layer 200 and the second pixel defining layer 320
Second lyophily film layer.
S5 prints lighting function material ink please further combined with Fig. 8 and 9, and solvent, drying and forming-film is gone to form the work(that shines
Ergosphere 400.Wherein, the lighting function ink above the second pixel defining layer 320 bounces back since adhesion strength is deteriorated
And the thickness of the light emitting functional layer 400 in the region is made to substantially reduce, or even separated.
S6, in light emitting functional layer 400 and pixel defining layer formed top electrode layer 500, encapsulation to get.
In the production method of the display panel 10 of present embodiment, due in the first pixel defining layer 310 in lyophobicity
The lighting function ink adhesion strength of side is poor, and ink can bounce back, to keep the light-emitting film thickness of this overlying regions smaller
It is even formed without film, and then by the light emitting functional layer on the join domain of adjacent color sub-pixel unit in ink crystallizing field
400 separated or reduce adjacent subpixels join domain light emitting functional layer 400 thickness, to effectively reduce lateral electric leakage
The generation of stream can improve the display effect and resolution ratio of display panel.Simultaneously because the setting of the first lyophily film layer 330, energy
The good spreadability for enough ensureing lighting function ink, prevents short circuit.
A kind of display device, including above-mentioned display panel 10 have good display effect.
Each technical characteristic of embodiment described above can be combined arbitrarily, to keep description succinct, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, it is all considered to be the range of this specification record.
Above-described embodiments merely represent several embodiments of the utility model, the description thereof is more specific and detailed,
But therefore it can not be interpreted as the limitation to utility model patent range.It should be pointed out that for the common skill of this field
For art personnel, without departing from the concept of the premise utility, various modifications and improvements can be made, these are belonged to
The scope of protection of the utility model.Therefore, the protection domain of the utility model patent should be determined by the appended claims.
Claims (10)
1. a kind of display panel, which is characterized in that including substrate；
Sub-pixel unit on the substrate is set；
The first pixel defining layer in lyophobicity on the substrate is set, and first pixel defining layer is adjacent for limiting
The fringe region of same color sub-pixel unit, first pixel defining layer is equipped with the first lyophily film layer.
2. display panel according to claim 1, which is characterized in that further include pixel electrode layer；
The pixel electrode layer be set to the substrate on, the first lyophily film layer also cover on the pixel electrode layer with it is described
On the fringe region of first pixel defining layer interfaces.
3. display panel according to claim 2, which is characterized in that further include the second pixel defining layer in lyophobicity；
On the substrate, second pixel defining layer is for limiting adjacent different colours for the second pixel defining layer setting
Sub-pixel unit.
4. display panel according to claim 3, which is characterized in that further include the second lyophily film layer；
The second lyophily film layer is set on the juncture area of second pixel defining layer and the pixel electrode layer.
5. display panel according to claim 4, which is characterized in that the first lyophily film layer and the second lyophily film
Layer is silicon nitride film layer.
6. display panel according to claim 3, which is characterized in that second pixel defining layer from the substrate phase
It gradually narrows at the bottom of contact to top.
7. according to claim 3 to 6 any one of them display panel, which is characterized in that the sub-pixel unit includes shining
Functional layer；
The light emitting functional layer is organic electroluminescent functional layer, quantum dot light emitting functional layer or the organic electroluminescent work(
Ergosphere and the quantum dot light emitting functional layer, which combine, is formed by mixed luminescence functional layer.
8. display panel according to claim 7, which is characterized in that further include top electrode layer；
The top electrode layer covers the light emitting functional layer and second pixel defining layer.
9. display panel according to claim 8, which is characterized in that the display panel is bottom emitting display panel, institute
It is transparent conductive film layer to state pixel electrode layer, and the top electrode layer is reflection electrode layer；Or
The display panel is top emitting display panel, and the pixel electrode layer is reflective conductive film layer, and the top electrode layer is
Transparent conductive film layer.
10. a kind of display device, which is characterized in that including the display panel described in any one of claim 1 to 9.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721849391.XU CN207651489U (en) | 2017-12-26 | 2017-12-26 | Display panel and display device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721849391.XU CN207651489U (en) | 2017-12-26 | 2017-12-26 | Display panel and display device |
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| CN207651489U true CN207651489U (en) | 2018-07-24 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111341807A (en) * | 2020-02-28 | 2020-06-26 | 京东方科技集团股份有限公司 | Pixel defining structure and OLED display panel |
| CN112331700A (en) * | 2019-12-31 | 2021-02-05 | 广东聚华印刷显示技术有限公司 | Light emitting device and method of manufacturing the same |
| CN112349750A (en) * | 2019-12-31 | 2021-02-09 | 广东聚华印刷显示技术有限公司 | Display device, preparation method thereof and display device |
| WO2024051548A1 (en) * | 2022-09-09 | 2024-03-14 | 纳晶科技股份有限公司 | Electroluminescent substrate and electroluminescent device comprising same |
-
2017
- 2017-12-26 CN CN201721849391.XU patent/CN207651489U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112331700A (en) * | 2019-12-31 | 2021-02-05 | 广东聚华印刷显示技术有限公司 | Light emitting device and method of manufacturing the same |
| CN112349750A (en) * | 2019-12-31 | 2021-02-09 | 广东聚华印刷显示技术有限公司 | Display device, preparation method thereof and display device |
| WO2021135632A1 (en) * | 2019-12-31 | 2021-07-08 | 广东聚华印刷显示技术有限公司 | Light-emitting device and manufacturing method therefor |
| CN112331700B (en) * | 2019-12-31 | 2022-12-06 | 广东聚华印刷显示技术有限公司 | Light emitting device and method of manufacturing the same |
| CN112349750B (en) * | 2019-12-31 | 2023-12-05 | 广东聚华印刷显示技术有限公司 | Display device, manufacturing method thereof and display device |
| CN111341807A (en) * | 2020-02-28 | 2020-06-26 | 京东方科技集团股份有限公司 | Pixel defining structure and OLED display panel |
| CN111341807B (en) * | 2020-02-28 | 2023-01-24 | 京东方科技集团股份有限公司 | Pixel defining structure and OLED display panel |
| WO2024051548A1 (en) * | 2022-09-09 | 2024-03-14 | 纳晶科技股份有限公司 | Electroluminescent substrate and electroluminescent device comprising same |
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