CN107104127A - Organic electroluminescence display panel and display device - Google Patents
Organic electroluminescence display panel and display device Download PDFInfo
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- CN107104127A CN107104127A CN201710288500.3A CN201710288500A CN107104127A CN 107104127 A CN107104127 A CN 107104127A CN 201710288500 A CN201710288500 A CN 201710288500A CN 107104127 A CN107104127 A CN 107104127A
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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
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
- H10K59/122—Pixel-defining structures or layers, e.g. banks
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
- H10K50/84—Passivation; Containers; Encapsulations
- H10K50/844—Encapsulations
Abstract
The invention discloses a kind of organic electroluminescence display panel and display device, organic electroluminescence display panel includes：Substrate, organic luminescent device and encapsulated layer；Organic electroluminescence display panel, including：Viewing area and the non-display area positioned at non-display area, wherein, organic luminescent device includes common cathode layer, common cathode layer is extended from viewing area to non-display area, on the direction for pointing to non-display area by viewing area, the end of common cathode layer is provided with sealing column, and sealing column is covered on the flat region of pixel defining layer, and encapsulated layer is covered in sealing column.By with last flat region for being in contact of common cathode layer on sealing column is set, the edge of negative electrode is limited with sealing column, embankment of the structure that last flat region and sealing column are constituted as encapsulated layer, be conducive to further reducing the border width of organic electroluminescence display panel, make organic electroluminescence display panel be easier to meet the requirement of ultra-narrow frame.
Description
Technical field
The present invention relates to display technology field, more particularly, to a kind of organic electroluminescence display panel and display device.
Background technology
With the development of the technologies such as big data, cloud computing and mobile Internet, when the mankind enter intelligent comprehensively
Generation, including intelligent mobile communication terminal, the intelligence smart machine such as wearable and smart home, have become in work and life
Indispensable part.As the important window of intellectualization times man-machine interaction, also major transformation is occurring for display panel.Its
In, Organic Light Emitting Diode (Organic light emitting diode, OLED) display panel is because of its thickness of thin, lighter
Just, actively luminous, picture is bright-coloured, low in energy consumption, pliability is good and the colour gamut advantage such as extensively, has become after tft liquid crystal
A new generation after display (Thin film transistor-Liquid crystal display, TFT-LCD) technology shows
Show technology.
In addition, people are in order to pursue more preferable visual experience, more and more higher is required to the ultra-narrow frame of display panel.Ultra-narrow
Frame is namely by further compressing the width of frame region to realize effective display area domain (Active Area, AA) area
Further expansion.Design and manufacture of the requirement of ultra-narrow frame to display panel propose higher challenge.
At present, it is many that organic luminescent device is sealed using encapsulated layer in the organic electroluminescence display panel of prior art
Fill, border, pole mould hatching effect (Mask shadow effect) area of encapsulated layer etc. are required to take certain space, because
This, the display floater frame that encapsulation design method of the prior art is realized is still wider.
In summary there is provided a kind of organic electroluminescence display panel and display device, so that the side of organic electroluminescence display panel
Frame narrows, and meets the requirement of ultra-narrow frame, is this area urgent problem to be solved.
The content of the invention
In view of this, the invention provides a kind of organic electroluminescence display panel and display device, solve in the prior art
Organic electroluminescence display panel frame still wider technical problem.
In order to solve the above-mentioned technical problem, the present invention proposes a kind of organic electroluminescence display panel, including
Substrate, the substrate includes pixel defining layer, and the pixel defining layer includes multiple open areas, each opening
There is flat region between region；
Organic luminescent device, the organic luminescent device includes organic light-emitting units and common cathode layer, organic hair
Light unit is located in the open area of the pixel defining layer, and the common cathode layer is covered in the pixel defining layer
On；
Encapsulated layer, the encapsulated layer is covered on the substrate；
The organic electroluminescence display panel includes viewing area and the non-display area positioned at the non-display area, wherein,
The common cathode layer is extended from the viewing area to the non-display area, described non-being pointed to by the viewing area
On the direction of viewing area, the end of the common cathode layer is provided with sealing column, and the sealing column is covered in the pixel definition
On the flat region of layer, and the encapsulated layer is covered in the sealing column.
Further, the encapsulated layer includes the first inorganic layer, organic layer and the second inorganic layer, wherein
The organic layer is located between first inorganic layer and second inorganic layer, and first inorganic layer is located at
The organic layer is towards on the side of the substrate；
The organic layer includes thinning area, and the thinning area is located between the viewing area and the sealing column.
Further, in the thinning area of the organic layer, the surface of second inorganic layer away from the substrate is in smooth
Convex surface.
Further, in the thinning area of the organic layer, the surface of second inorganic layer away from the substrate is inclined
Face.
Further, first inorganic layer is coated on the outside of the sealing column.
Further, the end of the common cathode layer is located at the same flat of the pixel defining layer with the sealing column
On layer.
Further, along parallel on the direction of the substrate between the end of the common cathode layer and the sealing column
Distance be less than the distance between two adjacent flatness layers of the pixel defining layer.
Further, the viewing area is micro- less than 600 along the distance in the direction parallel to the substrate with the sealing column
Rice.
Further, the substrate also includes cathode connection portion, and the common cathode layer is connect by the cathode connection portion
Receive voltage signal；
There is the opening of at least one pixel defining layer between the viewing area and the end of common cathode layer
Region, the cathode connection portion is located most closely to the open area of pixel defining layer described in the one of the end of the common cathode layer
It is interior.
Further, the altitude range of the sealing column is 1-5 microns.
In order to solve the above problems, the invention also provides a kind of display device, the display device includes above-mentioned any
Organic electroluminescence display panel described in one.
Compared with prior art, organic electroluminescence display panel of the invention and display device, realize following beneficial effect
Really：
In the side for the frame region that organic electroluminescence display panel is pointed to by the effective display area domain of organic electroluminescence display panel
Upwards, sealing column is set on last flat region being in contact with common cathode layer end, passes through the sealing column, on the one hand,
The edge of common cathode layer is limited, negative electrode Mask shadow effect is reduced, organic electroluminescence display panel side can be reduced
The width of frame, on the other hand, last flat region constitute the barricade (Bank) of encapsulated layer with sealing column, without being individually for
Bank sets flat region, and the omission of this flat region also reduces the width of organic electroluminescence display panel frame, and to sum up, the present invention makes to have
The frame of machine light emitting display panel is further narrow as, it is easier to meet the requirement of ultra-narrow frame.
By referring to the drawings to the detailed description of the exemplary embodiment of the present invention, further feature of the invention and its
Advantage will be made apparent from.
Brief description of the drawings
The accompanying drawing for being combined in the description and constituting a part for specification shows embodiments of the invention, and even
It is used for the principle for explaining the present invention together with its explanation.
The sectional view for the encapsulated layer that Fig. 1 provides for the present invention；
The sectional view for the display panel that Fig. 2 provides for the present invention；
The top view for the display panel that Fig. 3 provides for the present invention；
A kind of sectional view for organic electroluminescence display panel that Fig. 4 provides for the present invention；
The sectional view for another organic electroluminescence display panel that Fig. 5 provides for the present invention；
Fig. 6 carries out the schematic diagram of cathode evaporation for the organic electroluminescence display panel that the present invention is provided；
The structural representation for the organic light-emitting display device that Fig. 7 provides for the present invention.
Embodiment
The various exemplary embodiments of the present invention are described in detail now with reference to accompanying drawing.It should be noted that：Unless had in addition
Body illustrates that the part and the positioned opposite of step, numerical expression and numerical value otherwise illustrated in these embodiments does not limit this
The scope of invention.
The description only actually at least one exemplary embodiment is illustrative below, never as to the present invention
And its any limitation applied or used.
It may be not discussed in detail for technology, method and apparatus known to person of ordinary skill in the relevant, but suitable
In the case of, the technology, method and apparatus should be considered as a part for specification.
In shown here and discussion all examples, any occurrence should be construed as merely exemplary, without
It is as limitation.Therefore, other examples of exemplary embodiment can have different values.
It should be noted that：Similar label and letter represents similar terms in following accompanying drawing, therefore, once a certain Xiang Yi
It is defined, then it need not be further discussed in subsequent accompanying drawing in individual accompanying drawing.
Inventor's discovery, can be with inorganic, organic stacked structure to organic in organic electroluminescence display panel manufacturing process
Luminescent device is packaged, as shown in figure 1, being pointed to the organic luminescent device on substrate 101 by thin-film packing structure 103
102 are packaged, and organic luminescent device can be protected not influenceed by external environment condition (moisture, air etc.), wherein, TFE structures 103
In inorganic layer (including the first inorganic layer 1031 and second inorganic layer 1033) be mainly play a part of barrier water oxygen corrode, it is organic
Layer 1032 then has following functions：
1. planarize：Covering makes the particle and TFT substrate step formed during inorganic layer；
2. stress is discharged：Soft organic layer can discharge adjacent inorganic ply stress；
3. increase water oxygen corrodes path：Thicker organic layer can separate two layers of inorganic layer, greatly increase water oxygen invasion
Distance.
Inventor has found, when the above-mentioned encapsulating structure of use, which is packaged, to be put, and the encapsulation design of display panel can be such as Fig. 2 institutes
Show, as seen from Figure 2, display panel includes common cathode layer 2043, the organic light emission of substrate 201, organic luminescent device 204
The anode layer 2041 of device 204 and be arranged at common cathode layer 2043 and anode layer 2041 between organic light-emitting units 2042,
The pixel defining layer 201 and TFE construction packages layer 203 being arranged on substrate 201, wherein, pixel defining layer 202 includes alternating
The open area 2021 of setting and the flat region 2022 for defining open area 2021, organic light-emitting units 2042 are arranged at open region
At domain 2022.
From position to the outer end close to viewing area 10, display floater frame region includes organic with viewing area 10 successively
(cathode connection portion refers to common cathode layer for last adjacent flat region 2022 of luminescent device 2042, cathode connection portion 2023
The part being connected with substrate inner control circuit), negative electrode mould hatching effect (Mask shadow effect) area a, TFE it is organic
Floor thinning area b and embankment (Bank) area c for limiting TFE encapsulating structure organic layers border, wherein, with AA areas organic light emission list
Last adjacent flat region 2022 of member " and cathode connection portion 2023 constitutes area f as shown in Figure 2, wherein, negative electrode Mask
Shadow effect area a take the sky that 1 hundred to two hundred micron of space, organic layer thinning area b account for hundreds of to thousands of microns
Between, Bank areas c design can also take certain space, therefore, and the display floater frame that this kind encapsulation design method is realized is still
It is wider.
In view of this, appropriate to refer to Fig. 3 and Fig. 4, the embodiments of the invention provide a kind of organic electroluminescence display panel, Fig. 3
The top view of the organic electroluminescence display panel is given, Fig. 4 gives the sectional view of the organic electroluminescence display panel.Refer to figure
4, the organic electroluminescence display panel, including substrate 401, organic luminescent device 404 and encapsulated layer 403, it is preferable that encapsulated layer 403
Using TFE structures.
Substrate 401 includes pixel defining layer 402, and pixel defining layer 402 includes multiple open areas 4021, each open area
Between have flat region 4022.
Organic luminescent device 404 includes anode layer 4041, organic light-emitting units 4042 and common cathode layer 4043, You Jifa
Light unit 4042 is located in the open area 4021 of pixel defining layer 402, and common cathode layer 4043 is covered in pixel defining layer 402
On.Anode layer 4041 is located at organic light-emitting units 4042 and is located at anode close to the side of substrate 401, i.e. organic light-emitting units 4042
Between layer 4041 and common cathode layer 4043.
Fig. 3 is referred to, organic electroluminescence display panel includes viewing area 10 and the non-display area 20 positioned at the periphery of viewing area 10.
Please with further reference to Fig. 4, common cathode layer 4043 is extended from viewing area 10 to non-display area 20, by viewing area 10
On the direction for pointing to non-display area 20, the end of common cathode layer 4043 is provided with sealing column 405, and sealing column 405 is covered in picture
On last flat region of plain definition layer 402, last flat region is named as the first flat region 4022 ', and encapsulated layer
403 are covered in sealing column 405.
On the direction of non-display area that organic electroluminescence display panel is pointed to by the viewing area of organic electroluminescence display panel, with
Sealing column is set on the flat region that the end of the common cathode layer of organic luminescent device is in contact.Pass through the sealing column, on the one hand,
The edge of negative electrode is limited, negative electrode Mask shadow effect is reduced, the width of organic electroluminescence display panel frame can be reduced
Degree；On the other hand, the flat region constitutes the Bank for the organic layer for limiting encapsulated layer with sealing column, sets flat without being individually for Bank
Smooth area, the omission of this flat region helps further to reduce the width of organic electroluminescence display panel frame, to reach narrow frame
It is required that.
Encapsulated layer 403 is covered on substrate 401, and encapsulated layer 403 uses TFE structures.It should be noted that optional at some
Embodiment in, encapsulated layer 403 include the first inorganic layer 4031, the inorganic layer 403 of organic layer 4032 and second.Wherein, have
Machine layer 4032 is located between the first inorganic layer 4031 and the second inorganic layer 4033, and the first inorganic layer 4031 is located at organic layer 4032
Towards on the side of substrate 401.Organic layer 4032 includes thinning area 30, thinning area 30 be located at viewing area 10 and sealing column 405 it
Between.
Encapsulated layer includes inorganic layer and organic layer, and inorganic layer primarily serves the effect that barrier water oxygen corrodes, and organic layer is not only
Water oxygen can be increased and corrode path, additionally it is possible to be the effect that inorganic layer planarized and discharged inorganic ply stress.
Organic layer 4032 has predetermined thickness in viewing area 10, and the thinning area 30 of organic layer is thinned to zero by predetermined thickness,
First inorganic layer 4031 starts to make up with the second inorganic layer 4033 in the position that the thinning area 30 of organic layer 4032 is thinned to zero, with
Organic layer 4032 is completely in the confined space that the first inorganic layer 4031 and the second inorganic layer 4033 are constituted, in order to avoid organic layer
Leakage, pollutes to pixel defining layer and causes encapsulation to fail.
Further, in the thinning area 30 of organic layer 4032, the second surface of the inorganic layer 4033 away from substrate 401 is inclined
Face, the thinning area 30 of the second inclined plane correspondence organic layer 4032 of inorganic layer 4033.
In order to avoid organic layer 4032 enters pixel defining layer 402 by the first inorganic layer 4031 and the gap of sealing column 405,
First inorganic layer 4021 ends in the top of sealing column 405.As preferred scheme, the first inorganic layer 4031 is coated on sealing column
Gap is not present with sealing column 405 in outside, the first inorganic layer 4031, can prevent organic layer 4032 from entering pixel defining layer
402, improve the success rate of encapsulation.
It should be noted that in some optional embodiments, the end of common cathode layer 4043 and sealing column 405
In on the same flatness layer 4022 of pixel defining layer 402, i.e. the first flatness layer 4022 '.
Common cathode layer is all located at the first flatness layer with sealing column, the negative electrode open employed in cathode evaporation process
When being improved of mask, only need to inwardly widen original negative electrode open mask according to design size, improve simple easy
OK.
It should be noted that in some optional embodiments, the end and sealing column 405 of common cathode layer 4043 it
Between along parallel to the distance on the direction of substrate 401 be less than pixel defining layer 402 two adjacent flatness layers 4022 between
Distance, helps further to reduce the width of organic electroluminescence display panel frame.Specifically, the end of common cathode layer 4043 can
To end in the bottom of the first flatness layer 4022 ', the end of common cathode layer 4043 can also be oblique along the first flatness layer 4022 '
Upper extension is contacted with sealing column 405, but common cathode layer 4043 end can not be with sealing column 405 top contact.
It should be noted that in some optional embodiments, viewing area 10 is with sealing column 405 along parallel to substrate
The distance in 401 direction is less than 600 microns, the width in Ji Tu4Zhong d areas, by the width control system in d areas in the model less than 600 microns
In enclosing, the width of organic light emitting display face frame region was both reduced, and can guarantee that functions are normal at regional location again.
It should be noted that in some optional embodiments, the pixel defining layer 402 of substrate 401 also includes negative electrode
Wire connecting portion 4023,4043 layers of common cathode is entered by the receiving voltage signal of cathode connection portion 4023 to organic electroluminescence display panel
Row display control.
There is the open area of at least one pixel defining layer 402 between viewing area 10 and the end of common cathode layer 4043
4021, cathode connection portion 4023 is located most closely to the open area of a pixel defining layer 402 of the end of common cathode layer 4043
In 4021.As highest priority programme, only there is a pixel defining layer between the end of viewing area 10 and common cathode layer 4043
402 open area 4021, is more conducive to reduce the border width of organic electroluminescence display panel.
It should be noted that in some optional embodiments, the altitude range of sealing column 405 is 1-5 microns.Sealing
The flat region 4022 ' of post 405 and first collectively forms the bank for limiting encapsulation border.Sealing column uses the altitude range, energy
It is enough effectively to prevent organic layer overflow from covering bank, the thickness of encapsulated layer will not be increased because of the height of sealing column again.
The width of sealing column 405 should be less than the width of the first flat region 4022 ', the width of the first flatness layer 4022 ' simultaneously
The width of other flat regions 4022 in addition to the first flat region 4022 ' can be equal to or less than.Due to technique limitation, ordinary circumstance
The shape of lower flat region 4022 refers to the length of two waist midpoint lines of flat region 4022 close to isosceles trapezoid, herein described width
Degree.Preferably, the width of the first flat region 4022 ' meet technique it is simple under the conditions of should be as small as possible, so more
Beneficial to the width for reducing organic electroluminescence display panel frame region.
The widest part of sealing column 405 should be less than or equal to the upper bottom of the first flat region 4022 ' so that sealing column is more stable
It is fixed on the first flat region 4022 '.Preferably, the widest part of sealing column 405 should be equal to the first flat region 4022 '
Upper bottom, so that the bank that sealing column and the first flat region are collectively formed has to the organic layer of encapsulated layer and stronger prevents overflow
Effect.
It is appropriate to refer to Fig. 3 and Fig. 5, another organic electroluminescence display panel is present embodiments provided, it is organic that Fig. 3 gives this
The top view of light emitting display panel, Fig. 5 gives the sectional view of the organic electroluminescence display panel.Fig. 5 is referred to, the organic light emission
Display panel, including substrate 501, organic luminescent device 504 and encapsulated layer 503, it is preferable that encapsulated layer 503 uses TFE structures.
Substrate 501 includes pixel defining layer 502, and pixel defining layer 502 includes multiple open areas 5021, each open area
Between have flat region 5022.
Organic luminescent device 504 includes anode layer 5041, organic light-emitting units 5042 and common cathode layer 5043, You Jifa
Light unit 5042 is located in the open area 5021 of pixel defining layer 502, and common cathode layer 5043 is covered in pixel defining layer 502
On.Anode layer 5041, anode layer 5041 is located at organic light-emitting units 5042 close to the side of substrate 501, i.e. organic light-emitting units
5042 are located between anode layer 5041 and common cathode layer 5043.
Fig. 3 is referred to, organic electroluminescence display panel includes viewing area 10 and the non-display area 20 positioned at the periphery of viewing area 10.
Please with further reference to Fig. 5, common cathode layer 5043 is extended from viewing area 10 to non-display area 20, by viewing area 10
On the direction for pointing to non-display area 20, the end of common cathode layer 5043 is provided with sealing column 505, and sealing column 505 is covered in picture
On last flat region of plain definition layer 502, last flat region is named as the first flat region 5022 ', and encapsulated layer
503 are covered in sealing column 505.
On the direction of non-display area that organic electroluminescence display panel is pointed to by the viewing area of organic electroluminescence display panel, with
Sealing column is set on the flat region that the end of the common cathode layer of organic luminescent device is in contact.Pass through the sealing column, on the one hand,
The edge of negative electrode is limited, negative electrode Mask shadow effect is reduced, the width of organic electroluminescence display panel frame can be reduced
Degree；On the other hand, the flat region constitutes the Bank for the organic layer for limiting encapsulated layer with sealing column, sets flat without being individually for Bank
Smooth area, the omission of this flat region helps further to reduce the width of organic electroluminescence display panel frame, to reach narrow frame
It is required that.
Encapsulated layer 503 is covered on substrate 501, and encapsulated layer 503 uses TFE structures.It should be noted that optional at some
Embodiment in, encapsulated layer 503 include the first inorganic layer 5031, the inorganic layer 503 of organic layer 5032 and second.Wherein, have
Machine layer 5032 is located between the first inorganic layer 5031 and the second inorganic layer 5033, and the first inorganic layer 5031 is located at organic layer 5032
Towards on the side of substrate 501.Organic layer 5032 includes thinning area 30, thinning area 30 be located at viewing area 10 and sealing column 505 it
Between.
Encapsulated layer includes inorganic layer and organic layer, and inorganic layer primarily serves the effect that barrier water oxygen corrodes, and organic layer is not only
Water oxygen can be increased and corrode path, additionally it is possible to be the effect that inorganic layer planarized and discharged inorganic ply stress.
Organic layer 5032 has predetermined thickness in viewing area 10, and the thinning area 30 of organic layer is thinned to zero by predetermined thickness,
First inorganic layer 5031 starts to make up with the second inorganic layer 5033 in the position that the thinning area 30 of organic layer 5032 is thinned to zero, with
Organic layer 5032 is completely in the confined space that the first inorganic layer 5031 and the second inorganic layer 5033 are constituted, in order to avoid organic layer
Leakage, pollutes to pixel defining layer and causes encapsulation to fail.
Further, in the thinning area 30 of organic layer 5032, the second surface of the inorganic layer 5033 away from substrate 401 is in smooth convex
Face, this is due to that bank (bank is collectively formed by the flat region 5022 where sealing column 505 and sealing column 504) has been carried out
Hydrophobic treatment, prevent organic layer overflow cover bank effect it is more preferable.Described hydrophobic treatment can be PT hydrophobic treatments herein
Or ultraviolet light hydrophobic treatment.
In order to avoid organic layer 5032 enters pixel defining layer 502 by the first inorganic layer 4031 and the gap of sealing column 505,
First inorganic layer 5021 ends in the top of sealing column 505.As preferred scheme, the first inorganic layer 5031 is coated on sealing column
Gap is not present with sealing column 505 in outside, the first inorganic layer 5031, can prevent organic layer 5032 from entering pixel defining layer
502, improve the success rate of encapsulation.
It should be noted that in some optional embodiments, the end of common cathode layer 4043 and sealing column 505
In on the same flatness layer 5022 of pixel defining layer 502, i.e. the first flatness layer 5022 '.Common cathode layer is all located at sealing column
First flatness layer, when being improved of negative electrode open mask employed in cathode evaporation process only need to be by original the moon
Pole open mask inwardly widen according to design size, improve simple and easy to apply.
It should be noted that in some optional embodiments, the end and sealing column 505 of common cathode layer 5043 it
Between along parallel to the distance on the direction of substrate 501 be less than pixel defining layer 502 two adjacent flatness layers 5022 between
Distance, helps further to reduce the width of organic electroluminescence display panel frame.Specifically, the end of common cathode layer 5043 can
To end in the bottom of the first flatness layer 5022 ', the end of common cathode layer 5043 can also be oblique along the first flatness layer 5022 '
Upper extension is contacted with sealing column 505, but common cathode layer 5043 end can not be with sealing column 505 top contact.
It should be noted that in some optional embodiments, viewing area 10 is with sealing column 405 along parallel to substrate
The distance in 501 direction is less than 600 microns, the width in Ji Tu5Zhong d areas, by the width control system in d areas in the model less than 600 microns
In enclosing, the width of organic light emitting display face frame region was both reduced, and can guarantee that functions are normal at regional location again.
It should be noted that in some optional embodiments, the pixel defining layer 502 of substrate 501 also includes negative electrode
Wire connecting portion 5023,5043 layers of common cathode is entered by the receiving voltage signal of cathode connection portion 5023 to organic electroluminescence display panel
Row display control.
There is the open area of at least one pixel defining layer 502 between viewing area 10 and the end of common cathode layer 5043
5021, cathode connection portion 5023 is located most closely to the open area of a pixel defining layer 502 of the end of common cathode layer 5043
In 5021.As highest priority programme, only there is a pixel defining layer between the end of viewing area 10 and common cathode layer 5043
502 open area 5021, is more conducive to reduce the border width of organic electroluminescence display panel.
It should be noted that in some optional embodiments, the altitude range of sealing column 505 is 1-5 microns.Sealing
The flat region 5022 ' of post 505 and first collectively forms the bank for limiting encapsulation border.Sealing column uses the altitude range, energy
It is enough effectively to prevent organic layer overflow from covering bank, the thickness of encapsulated layer will not be increased because of the height of sealing column again.
The width of sealing column 505 should be less than the width of the first flat region 5022 ', the width of the first flatness layer 5022 ' simultaneously
The width of other flat regions 5022 in addition to the first flat region 5022 ' can be equal to or less than.Due to technique limitation, ordinary circumstance
The shape of lower flat region 5022 refers to the length of two waist midpoint lines of flat region 5022 close to isosceles trapezoid, herein described width
Degree.Preferably, the width of the first flat region 5022 ' meet technique it is simple under the conditions of should be as small as possible, so more
Beneficial to the width for reducing organic electroluminescence display panel frame region.
The widest part of sealing column 505 should be less than or equal to the upper bottom of the first flat region 5022 ' so that sealing column is more stable
It is fixed on the first flat region 5022 '.Preferably, the widest part of sealing column 505 should be equal to the first flat region 5022 '
Upper bottom, so that the bank that sealing column and the first flat region are collectively formed has to the organic layer of encapsulated layer and stronger prevents overflow
Effect.
The organic electroluminescence display panel provided for each embodiment of the invention, following manufacture method can be used
Manufactured, specifically using Array, evaporation and TFE packaging technologies, comprised the following steps：
Step 1：Form pixel defining layer on substrate, pixel defining layer includes multiple open areas, each open area it
Between have flat region；
Step 2：:The anode and organic procedures unit of organic luminescent device are made in the open area of pixel defining layer；
Step 3：Sealing column is made on last flat region on the direction for pointing to non-display area by viewing area；
Step 4：The cloudy common cathode layer of organic luminescent device is set using cathode evaporation method in pixel defining layer, and it is public
The end of common cathode layer ends in sealing column.
Fig. 6 gives the schematic diagram that organic electroluminescence display panel carries out cathode evaporation.It refer to Fig. 6, pixel defining layer position
In on substrate 601, pixel defining layer includes open area and flat region 6022；Sealing column 605 be located at pointed to by viewing area it is non-
On last flat region on the direction of viewing area, i.e. the first flat region 6022 '；In the sealing column 605 and outside of sealing column 605
The negative electrode open mask 606 of (it is outer to point to non-display area by viewing area) have the effect of blocking, and the inner side of sealing column 605 is (by non-
Viewing area point to viewing area direction be interior) negative electrode open mask 606 be hollow out, by cathode evaporation, then formed public
Cathode layer 6043,6043 end of common cathode layer end in sealing column 605.
It should be noted that in some optional embodiments, can be to sealing column and the first flat region after step 4
The hydrophobic treatment that the bank of composition enters, hydrophobic treatment can use dewatering process method of the prior art, for example, bank is entered
Row PT hydrophobic treatments or ultraviolet hydrophobic treatment.
A kind of organic light-emitting display device is present embodiments provided, Fig. 7 gives the vertical view of the organic light-emitting display device
Figure, refers to Fig. 7, and the organic light-emitting display device 701 includes any of the above-described organic electroluminescence display panel 7011.Need explanation
It is that the organic light-emitting display device includes but is not limited to the display of mobile phone, computer, notebook, tablet personal computer and television set etc.
Screen.
Compared with prior art, organic electroluminescence display panel of the invention and display device, realize following beneficial effect
Really：
In the side for the frame region that organic electroluminescence display panel is pointed to by the effective display area domain of organic electroluminescence display panel
Upwards, sealing column is set on last flat region being in contact with common cathode layer end, passes through the sealing column, on the one hand,
The edge of common cathode layer is limited, negative electrode Mask shadow effect is reduced, organic electroluminescence display panel side can be reduced
The width of frame, on the other hand, last flat region constitute the Bank of encapsulated layer with sealing column, are set without being individually for Bank
Flat region, the omission of this flat region also reduces the width of organic electroluminescence display panel frame, and to sum up, the present invention shows organic light emission
Show that the frame of panel is further narrow as, it is easier to meet the requirement of ultra-narrow frame.
Although some specific embodiments of the present invention are described in detail by example, the skill of this area
Art personnel are it should be understood that example above is merely to illustrate, the scope being not intended to be limiting of the invention.The skill of this area
Art personnel to above example it should be understood that can modify without departing from the scope and spirit of the present invention.This hair
Bright scope is defined by the following claims.
Claims (11)
1. a kind of organic electroluminescence display panel, it is characterised in that including
Substrate, the substrate includes pixel defining layer, and the pixel defining layer includes multiple open areas, each open area
Between have flat region；
Organic luminescent device, the organic luminescent device includes organic light-emitting units and common cathode layer, the organic light emission list
Member is in the open area of the pixel defining layer, and the common cathode layer is covered in the pixel defining layer；
Encapsulated layer, the encapsulated layer is covered on the substrate；
The organic electroluminescence display panel includes viewing area and the non-display area positioned at the non-display area, wherein,
The common cathode layer is extended from the viewing area to the non-display area, described non-display being pointed to by the viewing area
On the direction in area, the end of the common cathode layer is provided with sealing column, and the sealing column is covered in the pixel defining layer
On flat region, and the encapsulated layer is covered in the sealing column.
2. organic electroluminescence display panel according to claim 1, it is characterised in that it is inorganic that the encapsulated layer includes first
Layer, organic layer and the second inorganic layer, wherein
The organic layer is located between first inorganic layer and second inorganic layer, and first inorganic layer is positioned at described
Organic layer is towards on the side of the substrate；
The organic layer includes thinning area, and the thinning area is located between the viewing area and the sealing column.
3. organic electroluminescence display panel according to claim 2, it is characterised in that in the thinning area of the organic layer, institute
Surface of second inorganic layer away from the substrate is stated in smooth convex surface.
4. organic electroluminescence display panel according to claim 2, it is characterised in that in the thinning area of the organic layer, institute
State the inclined face in surface of second inorganic layer away from the substrate.
5. organic electroluminescence display panel according to claim 2, it is characterised in that first inorganic layer is coated on described
On the outside of sealing column.
6. organic electroluminescence display panel according to claim 1, it is characterised in that the end of the common cathode layer and institute
Sealing column is stated on the same flatness layer of the pixel defining layer.
7. organic electroluminescence display panel according to claim 1, it is characterised in that the end of the common cathode layer and institute
State between sealing column along parallel to the distance on the direction of the substrate be less than two of the pixel defining layer it is adjacent flat
The distance between layer.
8. organic electroluminescence display panel according to claim 1, it is characterised in that the viewing area and the sealing column edge
Distance parallel to the direction of the substrate is less than 600 microns.
9. organic electroluminescence display panel according to claim 1, it is characterised in that the substrate also includes cathode connection
Portion, the common cathode layer passes through the cathode connection portion receiving voltage signal；
There is the open area of at least one pixel defining layer between the viewing area and the end of common cathode layer,
The cathode connection portion is located most closely to described in the one of the end of the common cathode layer in the open area of pixel defining layer.
10. organic electroluminescence display panel according to claim 1, it is characterised in that the altitude range of the sealing column is
1-5 microns.
11. a kind of display device, it is characterised in that the display device includes having as described in claim 1-10 any one
Machine light emitting display panel.
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