CN109768182A - A kind of oled substrate, array substrate, display panel and display device - Google Patents
A kind of oled substrate, array substrate, display panel and display device Download PDFInfo
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- CN109768182A CN109768182A CN201910063226.9A CN201910063226A CN109768182A CN 109768182 A CN109768182 A CN 109768182A CN 201910063226 A CN201910063226 A CN 201910063226A CN 109768182 A CN109768182 A CN 109768182A
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Abstract
The present invention provides a kind of oled substrate, array substrate, display panel and display device, is related to field of display technology, for solving the problems, such as that electroluminescence layer heat dissipation effect is undesirable.Oled substrate, including the first substrate, further includes: first electrode is arranged on first substrate；Pixel defining layer is arranged in the first electrode far from first one side of substrate, and the pixel defining layer includes multiple open areas for defining sub-pixel for emitting light region and the auxiliary area around the open area；Electroluminescence layer, setting far from first one side of substrate, are provided with the electroluminescence layer in each open area in the first electrode；Second electrode, in the pixel defining layer far from first one side of substrate, each second electrode covers an open area and extends to the auxiliary area for setting；The electroluminescence layer shines under the driving of the first electrode and the second electrode.
Description
Technical field
The present invention relates to field of display technology more particularly to a kind of oled substrate, array substrate, display panel and display dresses
It sets.
Background technique
AMOLED (Active-Matrix Organic Light Emitting Diode, active matrix drive it is organic
Light emitting diode) driving circuit is effectively combined with Organic Light Emitting Diode, using switching device, the signal of needs is written, from
And the light emission luminance of each sub-pixel is controlled, with flexible, foldable, light, thin, colour gamut is wide, pure solid-state the advantages that obtains extensively
Concern and rapid development.
In normal work, the thermal stability of electroluminescence layer is particularly significant for the normal display of AMOLED to AMOLED
's.As shown in Figure 1, illustrating a kind of traditional AMOLED structure, it will be noted from fig. 1 that electroluminescence layer 10 is lower for driving electricity
Road film layer 20 can also discharge heat in normal work, be unfavorable for the release of 10 heat of electroluminescence layer.In addition, electroluminescent
It is cathode 30 and vacuum environment on layer 10, the heat that electroluminescence layer 10 generates reaches after cathode 30 can not fast quick-release upwards
It puts, and for large scale, it is far from being enough for discharging heat by cathode 30 merely.Furthermore electroluminescence layer 10 is certainly
Body can also generate heat while shining.And 10 temperature of electroluminescence layer is excessively high, will affect the stability of organic material, for electricity
Sub- hole-recombination, device lifetime etc. are unfavorable.
Summary of the invention
The embodiment of the present invention provides a kind of oled substrate, array substrate, display panel and display device, for solving electricity
The undesirable problem of electroluminescent layer heat dissipation effect.
In order to achieve the above objectives, the embodiment of the present invention adopts the following technical scheme that
In a first aspect, providing a kind of oled substrate, including the first substrate, further includes: first electrode is arranged described first
On substrate；Pixel defining layer, in the first electrode far from first one side of substrate, the pixel defining layer includes more for setting
A open area for defining sub-pixel for emitting light region and the auxiliary area around the open area；Electroluminescence layer, if
It sets in the first electrode far from first one side of substrate, is provided with the electroluminescence layer in each open area；
Second electrode, in the pixel defining layer far from first one side of substrate, each second electrode is covered described in one for setting
Open area and extend to the auxiliary area；Driving of the electroluminescence layer in the first electrode and the second electrode
It is lower to shine.
Optionally, the oled substrate further includes the first support column positioned at the auxiliary area；First support column
It is arranged between the second electrode and the pixel defining layer, first support column and the second electrode correspond；
Wherein, the second electrode on first substrate orthographic projection and first support column on first substrate just
Projection is overlapping.
Optionally, the oled substrate further includes the second support column positioned at the auxiliary area, second support column
Thickness be greater than first support column and the second electrode the sum of thickness.
Second aspect provides a kind of array substrate, marks off sub-pixel for emitting light region and is located at the sub-pixel for emitting light area
Non-luminous region around domain, the array substrate include the second substrate and the film crystal that is arranged on second substrate
Pipe, further includes: flatness layer, setting far from second one side of substrate, are provided in the thin film transistor (TFT) on the flatness layer
Via hole；Auxiliary electrode, in the flatness layer far from second one side of substrate, the auxiliary electrode is located at described non-luminescent for setting
Region, each auxiliary electrode are electrically connected by the via hole with the drain electrode of a thin film transistor (TFT).
Optionally, the array substrate further includes the third support column positioned at the non-luminous region；The third support
Column is arranged between the auxiliary electrode and the flatness layer, and the third support column and the auxiliary electrode correspond；Its
In, the auxiliary electrode is in the orthographic projection and positive throwing of the third support column on second substrate on second substrate
Shadow is overlapping.
Optionally, the array substrate further includes the 4th support column positioned at the auxiliary area, the 4th support column
Thickness be greater than the third support column and the auxiliary electrode the sum of thickness.
The third aspect provides a kind of display panel, and including above-mentioned oled substrate, oled substrate does not include the first support column
It further include above-mentioned array substrate with the second support column, array substrate includes at least third support column；On the oled substrate
Two electrodes are corresponded and are electrically connected with the auxiliary electrode in the array substrate.
Optionally, in the case where the array substrate includes four support column, third support column, auxiliary electrode, second
The sum of thickness of electrode three is less than or equal to the thickness of the 4th support column.
Fourth aspect, provides a kind of display panel, including above-mentioned oled substrate, and oled substrate includes at least the first support
Column, further includes above-mentioned array substrate, and array substrate does not include third support column and the 4th support column；On the oled substrate
Two electrodes are corresponded and are electrically connected with the auxiliary electrode in the array substrate.
Optionally, in the case where the oled substrate includes the second support column, the first support column, second electrode, auxiliary
The sum of thickness of electrode three is less than or equal to the thickness of second support column.
5th aspect, provides a kind of display device, including display panel described in the third aspect.
6th aspect, provides a kind of display device, including display panel described in fourth aspect.
The present invention provides a kind of oled substrate, array substrate, display panel and display device, and electroluminescence layer setting is existed
On oled substrate, directly contacting between the driving circuit film layer on separable electroluminescence layer and array substrate is avoided to electricity
The direct baking of electroluminescent layer is reduced so as to avoid influence of the heat of driving circuit film layer generation to electroluminescence layer
Heat source.On this basis, the heat that electroluminescence layer itself generates directly can penetrate first using the first electrode of large area
Substrate radiates, and increases effective sinking path, therefore the present invention can effectively promote thermal stability and the service life of product.
In addition, in the present invention on the first substrate by first electrode preparation, compared with traditional design, without support column or picture
Element defines the influence of interval difference, it is ensured that the homogeneity to form a film in the continuity of first electrode film layer preparation and face reduces the first electricity
The resistance of pole, promoted large scale AMOLED product in first electrode voltage signal internal homogeneity and stability, avoid by
Show that uneven, flashing etc. is bad caused by generating pressure drop or pulling by other alternating signals, promotion product display quality.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is a kind of structural schematic diagram for display panel that the prior art provides；
Fig. 2 is a kind of structural schematic diagram one of oled substrate provided in an embodiment of the present invention；
Fig. 3 is the structural relation schematic diagram between a kind of support column provided in an embodiment of the present invention and pixel defining layer；
Fig. 4 is a kind of structural schematic diagram two of oled substrate provided in an embodiment of the present invention；
Fig. 5 is a kind of structural schematic diagram three of oled substrate provided in an embodiment of the present invention；
Fig. 6 is a kind of structural schematic diagram one of array substrate provided in an embodiment of the present invention；
Fig. 7 is a kind of structural schematic diagram two of array substrate provided in an embodiment of the present invention；
Fig. 8 is a kind of structural schematic diagram three of array substrate provided in an embodiment of the present invention；
Fig. 9 is a kind of structural schematic diagram one of display panel provided in an embodiment of the present invention；
Figure 10 is a kind of structural schematic diagram two of display panel provided in an embodiment of the present invention；
Figure 11 is a kind of structural schematic diagram three of display panel provided in an embodiment of the present invention.
Appended drawing reference:
10- electroluminescence layer；20- driving circuit film layer；30- cathode；The first substrate of 40-；50- first electrode；60- pixel
Define layer；The open area 61-；62- auxiliary area；70- second electrode；The first support column of 81-；The second support column of 82-；110-
Two substrates；120- thin film transistor (TFT)；130- flatness layer；140- auxiliary electrode；151- third support column；The 4th support column of 152-.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
AMOLED in normal work, the thermal stability of electroluminescence layer and it includes cathode (cathode) signal
Stability, homogeneity are highly important for the normal display of AMOLED.In traditional handicraft, electroluminescence layer lacks effective
Sinking path, around surrounded by organic film, and organic film does not have preferable thermal diffusivity；It is driving circuit under it
Film layer, can also discharge heat in normal work is also unfavorable for the release of electroluminescence layer heat；Thereon for cathode with
And vacuum environment, the heat that electroluminescence layer generates reach after cathode can not upward quick release, and for large scale and
Speech is merely far from being enough by cathode release heat.Electroluminescence layer utilizes the hair that releases energy after electronics and hole-recombination
Light, but heat can be also generated simultaneously, the temperature that will lead to electroluminescence layer when working long hours is excessively high, influences the steady of organic material
It is qualitative, it is unfavorable for electron-hole recombinations, device lifetime etc..
And public electrode of the cathode as AMOLED, the electronics of needs is provided for the normal display of electroluminescence layer, electricity
The uniformity and stability of pressure are highly important for the normal display of display panel.And in traditional handicraft, due to support
There are larger segment differences for column or pixel defining layer, will affect the continuity of cathode electrode film forming in this way, increase resistance in its face, right
In large scale, high-resolution display panel, in the distal end of display panel or the position at separate cathode signal write-in end, cathode
Signal in transmission process since it is desired that overcome biggish resistance value that can generate pressure drop, cause cathode signal display panel not
It is not of uniform size with position, it shows that uneven, flashing etc. is visual bad to generate, influences product quality.Also, if cathode is believed
Number driving capability weaken, cathode voltage signal is highly susceptible to the coupling of other alternating signals inside display panel and is drawn
It is dynamic, so as to cause distributing inhomogeneity in cathode voltage face, influence product quality.
In addition to this, the preparation process of traditional design, which need to be sequentially completed, prepares driving circuit film layer, prepares luminescent device, envelope
Three steps are filled, on the one hand can extend manufacturing cycle in this way, influence production capacity；On the other hand due to long preparation period, subsequent technique
Middle increase Delay (delay) risk causes driving circuit film layer exposed for a long time in air, to influence driving circuit film layer
It is bad to generate electrology characteristic correlation for characteristic.
It is therefore proposed that a kind of new AMOLED structure design method, at least can improve or optimize and is a kind of present on
Problem, for promoting service life, the display quality of AMOLED, especially large size product, it is very significant for saving preparation time
's.
Unless otherwise defined, the technical term or scientific term used herein should be those skilled in the art and is understood
Ordinary meaning.It is " first " used in present patent application specification and claims, " second " and similar
Word is not offered as any sequence, quantity or importance, and is used only to distinguish different component parts." comprising " or
The similar word such as "comprising" point out element or object before the existing word cover the element for appearing in the word presented hereinafter or
Person's object and its equivalent, and it is not excluded for other elements or object.The similar word such as " connection " or " connected " is simultaneously non-limiting
It in the connection of physics or machinery, but may include electrical connection, it is either directly or indirect."upper", "lower",
"left", "right" etc. is only for indicating corresponding positional relationship, and after the absolute position for being described object changes, then this is with respect to position
Relationship is set also correspondingly to change.
The embodiment of the present invention provides a kind of oled substrate, as shown in Fig. 2, including the first substrate 40, first electrode 50, setting
On the first substrate 40；Pixel defining layer 60, in first electrode 50 far from 40 side of the first substrate, pixel defining layer 60 is wrapped for setting
Include multiple open areas 61 for defining sub-pixel for emitting light region and the auxiliary area 62 around open area 61；Electroluminescent
Layer 10, setting far from 40 side of the first substrate, are provided with electroluminescence layer 10 in each open area 61 in first electrode 50；The
Two electrodes 70, in pixel defining layer 60 far from 40 side of the first substrate, each second electrode 70 covers an open area 61 for setting
And extend to auxiliary area 62；Electroluminescence layer 10 shines under the driving of first electrode 50 and second electrode 70.
It should be noted that first, oled substrate marks off display area and non-display area, and display area marks off more
A sub-pixel for emitting light region, sub-pixel for emitting light region are overlapped with the open area 61 in pixel defining layer 60.As shown in figure 3, picture
It is latticed that element, which defines layer 60, is open area 61 at grid, and the material of pixel defining layer 60 is light screening material.
Second, first electrode 50 and second electrode 70 are for driving electroluminescence layer 10 to shine, for example, oled substrate includes
One first electrode 50, the shape of first electrode 50 are planar, cover display area, are used as cathode.Oled substrate includes multiple
Independent second electrode 70, the shape of second electrode 70 are bulk, and a second electrode 70 covers an open area 61, is used as
Anode.First electrode 50 and second electrode 70 transmission electrode and reflecting electrode each other, exemplary, first electrode 50 is transmission electricity
Pole, second electrode 70 is reflecting electrode, and when oled substrate is applied to display panel, display panel is top emission type display panel.
In order to improve the flatness of first electrode 50, first electrode 50 for example be can be set on the surface of the first substrate 40,
First substrate 40 for example can be glass substrate.
The material of third, electroluminescence layer 10 can refer to the relevant technologies, and this is not limited by the present invention.Each open region
An electroluminescence layer 10 is provided in domain 61.
In order to promoted hole electronics laser propagation effect, be also provided with hole transport in the two sides of electroluminescence layer 10
Layer and electron transfer layer, for hole transmission layer between electroluminescence layer 10 and anode, electron transfer layer is located at electroluminescence layer
Between 10 and cathode.
Hole transmission layer is made of hole mobile material, and hole mobile material can be triaromatic amine class series, biphenyl
Diamine derivative, intersection construction link diamines biphenyl.It such as can be NPB (N, N'- diphenyl-N, N'- (1- naphthalene) -1,1'-
Biphenyl -4,4'- diamines), TCTA (4,4 ', 4 "-Tri (9-carbazoyl) triphenylamine, 4,4', 4 "-three (carbazoles -
9- yl) triphenylamine), m-MTDATA (4,4', 4 "-Tris (N-3-methylphenyl-N-phenylamino)
Triphenylamine, 4,4', 4 "-three (N-3- methylphenyl-N-phenyl amino) triphenylamines) etc..
Electron transfer layer is made of electron transport material, and electron transport material can be metallo-chelate, azole chemical combination
Object, phenodiazine phenanthrene derivative etc., such as can be with are as follows: (4,7- diphenyl -1,10- are adjacent by AlQ3 (three (8-hydroxyquinoline) aluminium), BPhen
Phenanthroline), TmPyPB (1,3,5- tri- [(3- pyridyl group) -3- phenyl] benzene), OXD-7 (two [5- (4- of 2,2'- (1,3- phenyl)
Tert-butyl-phenyl) -1,3,4- oxadiazoles]) etc..
Further, in order to increase the injection efficiencies of electrons and holes, can also be arranged in 10 two sides of electroluminescence layer empty
Cave implanted layer and electron injecting layer, for hole injection layer between hole transmission layer and anode, electron injecting layer is located at electronics biography
Between defeated layer and cathode.
In some embodiments, second electrode 70 is located at the part of open area 61 and is located at the part position of auxiliary area 62
In in same level.It is exemplary, it will be arranged between first electrode 50 and second electrode 70, and be located at open area 61
Layer structure is known as luminescence unit, for example, luminescence unit includes electron injecting layer, hole injection layer, electron transfer layer, hole transport
Layer, electroluminescence layer 10.The thickness of luminescence unit is identical as the thickness of pixel defining layer 60, wherein the thickness side of luminescence unit
To the thickness direction of as oled substrate.
4th, as shown in Fig. 2, second electrode 70 is arranged in pixel defining layer 60 far from 40 side of the first substrate, electroluminescent hair
Photosphere 10 is arranged in open area 61, and therefore, electroluminescence layer 10 is necessarily arranged in far from the first substrate 40 in second electrode 70
Side, and second electrode 70 and open area 61 correspond.
As shown in Fig. 2, second electrode 70 covers opening corresponding with the second electrode 70 along the thickness direction of oled substrate
Region 61.That is, orthographic projection of the second electrode 70 on the first substrate 40 covers opening corresponding with the second electrode 70
Orthographic projection of the region 61 on the first substrate 40.
It will be understood by those skilled in the art that though second electrode 70 extends to auxiliary area 62, adjacent second electrode 70
It can't be electrically connected in auxiliary area 62.
Electroluminescence layer 10 is arranged on oled substrate, separates electroluminescent by oled substrate provided in an embodiment of the present invention
Directly contacting between the driving circuit film layer on luminescent layer 10 and array substrate, avoids driving circuit film layer to electroluminescence layer
10 direct baking reduces heat source so as to avoid influence of the heat of driving circuit film layer generation to electroluminescence layer 10.
On this basis, the heat that electroluminescence layer 10 itself generates can be directly using the first electrode 50 of large area through the first lining
Bottom 40 is radiated, and increases effective sinking path, therefore the present invention can effectively promote thermal stability and the service life of product.
In addition, in the present invention by the preparation of first electrode 50 on the first substrate 40, compared with traditional design, without support column
Or the influence of 60 segment difference of pixel defining layer, it is ensured that the homogeneity to form a film in the continuity of 50 film layer of first electrode preparation and face, drop
The resistance of low first electrode 50 promotes in large scale AMOLED product the internal homogeneity of 50 voltage signal of first electrode and steady
It is qualitative, it avoids showing that uneven, flashing etc. is bad caused by the pulling due to generation pressure drop or by other alternating signals, is promoted and produced
Product display quality.
In some embodiments, as shown in figure 4, oled substrate further includes the first support column 81 positioned at auxiliary area 62；
First support column 81 is arranged between second electrode 70 and pixel defining layer 60, and the first support column 81 and second electrode 70 1 are a pair of
It answers；Wherein, second electrode 70 is in the orthographic projection and orthographic projection of first support column 81 on the first substrate 40 on the first substrate 40
It is overlapping.
Herein, the setting of second electrode 70 is in first electrode 50 far from 40 side of the first substrate, and second electrode 70 is in the first lining
Orthographic projection and orthographic projection of first support column 81 on the first substrate 40 on bottom 40 is overlapping, that is to say, that the first support column 81
It is parallel on the surface of the first substrate 40 and is covered with second electrode 70.
First support column 81 mainly plays auxiliary connection function, padded second electrode 70 is used for, so that second electrode 70 and battle array
Auxiliary electrode 140 on column substrate is electrically connected, it is ensured that product works normally.In addition, the first support column 81 also functions to Auxiliary support
Effect.In some embodiments, in order to improve the connection effect of auxiliary electrode 140 in second electrode 70 and array substrate, make
Second electrode 70 covers orthographic projection of first support column 81 on the first substrate 40 in the orthographic projection on the first substrate 40.
The material of first support column 81 can refer to the relevant technologies selection, herein without limitation.
In order to further ensure support effect, second electrode 70 is avoided to be damaged, in some embodiments, such as Fig. 5 institute
Show, oled substrate further includes the second support column 82 positioned at auxiliary area 62, and the thickness of the second support column 82 is greater than the first support
The sum of the thickness of column 81 and second electrode 70.
Wherein, the thickness direction of the second support column 82 is the thickness direction of oled substrate, the material of the second support column 82
Can be identical as the material of the first support column 81, the two synchronizes to be formed.
Herein, as shown in figure 3, the second support column 82 is located at auxiliary area 62, but the second support column 82 is not electric with second
Pole 70 corresponds, and can be set with the corresponding multiple second electrodes 70 of second support column 82, the reasonable quantity of the second support column 82
It sets.
The embodiment of the present invention also provides a kind of array substrate, as shown in fig. 6, marking off sub-pixel for emitting light region and being located at son
Non-luminous region around pixel light emission region, array substrate include the second substrate 110 and are arranged on the second substrate 110
Thin film transistor (TFT) 120, further includes: flatness layer 130 is arranged in thin film transistor (TFT) 120 far from 110 side of the second substrate, flatness layer
Via hole is provided on 130；Auxiliary electrode 140, setting in flatness layer 130 far from 110 side of the second substrate, auxiliary electrode 140
In non-luminous region, each auxiliary electrode 140 is electrically connected by via hole with the drain electrode of a thin film transistor (TFT) 120.
It should be noted that first, Fig. 6 illustrate a kind of structure of thin film transistor (TFT) 120, but simultaneously without limitation, film
Transistor 120 includes grid, gate insulation layer, semiconductor active layer, source electrode and drain electrode.
Wherein, according to the difference of semiconductor active layer material, thin film transistor (TFT) 120 can for amorphous silicon film transistor,
Polycrystalline SiTFT, metal oxide thin-film transistor, Organic Thin Film Transistors etc..On this basis, thin film transistor (TFT)
120 can also be staggered, reciprocal cross shift, coplanar type or anti-coplanar type etc..According to the difference of grid, thin film transistor (TFT) 120 can
Think top gate type, top gate type, double grid type etc..
The source electrode of the thin film transistor (TFT) 120 used in all embodiments of the invention, drain electrode be it is symmetrical, so its source electrode,
Drain electrode is not different.Wherein it will be known as source in a pole to distinguish the two poles of the earth of thin film transistor (TFT) 120 in addition to grid based on this
Pole, another pole are known as draining.
Second, the sub-pixel for emitting light region of array substrate and the open area 61 of oled substrate are corresponding, non-luminous region with
Auxiliary area 62 is corresponding.
Auxiliary electrode 140 is located at non-luminous region, certainly, as needed, and in some embodiments, auxiliary electrode 140
Sub-pixel for emitting light region can be extended to.It is exemplary, when above-mentioned OLED second electrode 70 be reflecting electrode, then, it is no matter auxiliary
Help electrode 140 material why, auxiliary electrode 140 can extend to sub-pixel for emitting light region.When the second of above-mentioned OLED
Electrode 70 is transmission electrode, and in the case where the material of auxiliary electrode 140 is translucent material, auxiliary electrode 140 can also extend
To sub-pixel for emitting light region.The embodiment of the present invention is not defined the specific material of auxiliary electrode 140, can as needed rationally
Select conductive material.
It will be understood by those skilled in the art that auxiliary electrode 140 is multiple electrodes being independently arranged herein, each auxiliary electricity
Pole 140 is electrically connected by the via hole on flatness layer 130 with the drain electrode of a thin film transistor (TFT) 120, an auxiliary electrode 140 corresponding one
A thin film transistor (TFT) 120.Certainly, as shown in fig. 6, the via hole on flatness layer 130 is also disposed at non-luminous region.
Third, the material of flatness layer 130 are organic material, such as the good organic material of thermal insulation may be selected, flat playing
While smooth effect, heat-blocking action is played.
Array substrate provided in an embodiment of the present invention, the heat that driving circuit film layer generates need guiding through 130 ability of flatness layer
Discharge, and flatness layer 130 as organic material, thermal conductivity is poor, therefore, heat is difficult to across flatness layer 130.In this way
One, after array substrate and oled substrate encapsulation, the heat that driving circuit film layer generates inherently is difficult to across flatness layer
130, and also need guiding through the vacuum layer array substrate and oled substrate across the heat of flatness layer 130, vacuum layer with it is flat
As layer 130, thermal conductivity is poor, and therefore, the influence that the heat that driving circuit film layer generates generates electroluminescence layer 10 is almost
It can ignore, the present invention can effectively promote thermal stability and the service life of product.
In some embodiments, as shown in fig. 7, array substrate further includes the third support column 151 positioned at non-luminous region；
Third support column 151 is arranged between auxiliary electrode 140 and flatness layer 130, and third support column 151 and auxiliary electrode 140 are one by one
It is corresponding；Wherein, auxiliary electrode 140 on the second substrate 110 orthographic projection and third support column 151 on the second substrate 110
Orthographic projection is overlapping.
Herein, auxiliary electrode 140 is arranged in flatness layer 130 far from 110 side of the second substrate, and auxiliary electrode 140 is second
Orthographic projection and orthographic projection of the third support column 151 on the second substrate 110 on substrate 110 is overlapping, that is to say, that third support
Column 151 is parallel on the surface of the second substrate 110 and is covered with auxiliary electrode 140.
Third support column 151 mainly rise auxiliary connection function, be used for padded auxiliary electrode 140 so that auxiliary electrode 140 with
Second electrode 70 on oled substrate is electrically connected, it is ensured that product works normally.In addition, the first support column 81 also functions to Auxiliary support
Effect.In some embodiments, in order to improve the connection effect of second electrode 70 on auxiliary electrode 140 and oled substrate, make
Auxiliary electrode 140 is in orthographic projection of the orthographic projection covering third support column 151 on the second substrate 110 on the second substrate 110.
The material of third support column 151 can refer to the relevant technologies selection, herein without limitation.
In order to further ensure support effect, auxiliary electrode 140 is avoided to be damaged, in some embodiments, such as Fig. 8 institute
Show, array substrate further includes the 4th support column 152 positioned at auxiliary area 62, and the thickness of the 4th support column 152 is greater than third branch
The sum of the thickness of dagger 151 and auxiliary electrode 140.
Wherein, the thickness direction of the 4th support column 152 is the thickness direction of array substrate, the material of the 4th support column 152
Material can be identical as the material of third support column 151, and the two synchronizes to be formed.
Herein, the 4th support column 152 is located at non-luminous region, but the 4th support column 152 not with auxiliary electrode 140 one by one
It is corresponding, can be with the corresponding multiple auxiliary electrodes 140 of the 4th support column 152, the reasonable quantity setting of the 4th support column 152
It can.
The embodiment of the present invention also provides a kind of display panel, as shown in figure 9, including above-mentioned oled substrate, on oled substrate
It is not provided with the first support column 81 and the second support column 82；Further include above-mentioned array substrate, third is at least set in array substrate
Support column 151；Second electrode 70 on oled substrate is corresponded and is electrically connected with the auxiliary electrode 140 in array substrate.
Herein, after oled substrate and array substrate encapsulate, the sub-pixel for emitting light region of array substrate and opening for oled substrate
Mouth region domain 61 is corresponding, and non-luminous region is corresponding with auxiliary area 62.
Display panel provided by the invention, the data-signal on data line are transmitted to second electrode 70 through auxiliary electrode 140,
Ensure that the normal work of product, electroluminescence layer 10 and driving circuit film layer are separately positioned on the first substrate 40 and the second substrate
Different from traditional preparation process on 110, driving circuit film layer and film layer related to electroluminescence layer 10 may be implemented in the present invention
It prepares simultaneously, saves preparation time, promote production capacity, avoid the Delay (delay) in preparation process, influence driving circuit film layer
Characteristic.
In the case where array substrate includes the 4th support column 152, third support column 151, the 140, second electricity of auxiliary electrode
The sum of thickness of 70 three of pole is less than or equal to the thickness of the 4th support column 152.
That is, the thickness of the 4th support column 152 cannot influence the electrical connection of second electrode 70 and auxiliary electrode 140,
The thickness of 4th support column 152 is equal or approximately equal to third support column 151, auxiliary electrode 140,70 three of second electrode
The sum of thickness or the thickness of the 4th support column 152 be slightly less than third support column 151, auxiliary electrode 140, second electrode 70
The sum of thickness of three, but cannot be small too many, otherwise do not have supporting role.
The embodiment of the present invention also provides a kind of display device, including above-mentioned display panel.
Above-mentioned display device specifically can be OLED display, OLED TV, Digital Frame, mobile phone, tablet computer, navigation
Instrument etc. has the product or component of any display function.
The embodiment of the present invention also provides a kind of display panel, as shown in Figure 10, including above-mentioned includes at least the first support column
81 oled substrate further includes above-mentioned do not include third support column 151 and the 4th support column 152 array substrate；Oled substrate
On second electrode 70 in array substrate auxiliary electrode 140 correspond and be electrically connected.
Herein, after oled substrate and array substrate encapsulate, the sub-pixel for emitting light region of array substrate and opening for oled substrate
Mouth region domain 61 is corresponding, and non-luminous region is corresponding with auxiliary area 62.
As shown in figure 11, the related film layer of electroluminescence layer 10 is arranged on the first substrate 40, therefore the film on oled substrate
Film layer on layer and array substrate can be prepared simultaneously, after the completion of two components are prepared respectively, be packaged work.Without as passing
Technique of uniting is such, after having prepared driving circuit film layer on the second substrate 110, then proceedes to production 10 related film of electroluminescence layer
Layer, is then packaged again.
Display panel provided by the invention, the data-signal on data line are transmitted to second electrode 70 through auxiliary electrode 140,
Electroluminescence layer 10 and driving circuit film layer are separately positioned on the first substrate 40 and the second substrate 110, with traditional preparation work
Skill is different, and driving circuit film layer may be implemented in the present invention and film layer related to electroluminescence layer 10 is prepared simultaneously, when saving preparation
Between, production capacity is promoted, the Delay in preparation process is avoided, influences driving circuit film layer characteristic.
In the case where oled substrate includes the second support column 82, the first support column 81, second electrode 70, auxiliary electrode
The sum of thickness of 140 threes is less than or equal to the thickness of the second support column 82.
That is, the thickness of the second support column 82 cannot influence the electrical connection of second electrode 70 and auxiliary electrode 140,
The thickness of second support column 82 is equal or approximately equal to the first support column 81, second electrode 70, the thickness of 140 three of auxiliary electrode
The thickness of the sum of degree or the second support column 82 is slightly less than the first support column 81, second electrode 70, auxiliary electrode 140 three
The sum of thickness, but cannot be small too many, otherwise do not have supporting role.
The embodiment of the present invention also provides a kind of display device, including above-mentioned display panel.
Above-mentioned display device specifically can be OLED display, OLED TV, Digital Frame, mobile phone, tablet computer, navigation
Instrument etc. has the product or component of any display function.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Lid is within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (11)
1. a kind of oled substrate, including the first substrate, which is characterized in that further include:
First electrode is arranged on first substrate；
Pixel defining layer is arranged in the first electrode far from first one side of substrate, and the pixel defining layer includes multiple
The open area for defining sub-pixel for emitting light region and the auxiliary area around the open area；
Electroluminescence layer, setting far from first one side of substrate, are arranged in the first electrode in each open area
There is the electroluminescence layer；
Second electrode, setting is in the pixel defining layer far from first one side of substrate, each second electrode covering one
The open area and extend to the auxiliary area；
Wherein, the electroluminescence layer shines under the driving of the first electrode and the second electrode.
2. oled substrate according to claim 1, which is characterized in that further include the first support positioned at the auxiliary area
Column；
First support column is arranged between the second electrode and the pixel defining layer, first support column with it is described
Second electrode corresponds；
Wherein, the second electrode on first substrate orthographic projection and first support column on first substrate
Orthographic projection it is overlapping.
3. oled substrate according to claim 2, which is characterized in that further include the second support positioned at the auxiliary area
Column, the thickness of second support column are greater than the sum of the thickness of first support column and the second electrode.
4. a kind of array substrate marks off sub-pixel for emitting light region and the non-light-emitting area around the sub-pixel for emitting light region
Domain, the array substrate include the second substrate and the thin film transistor (TFT) that is arranged on second substrate, which is characterized in that also
Include:
Flatness layer, setting far from second one side of substrate, are provided with via hole on the flatness layer in the thin film transistor (TFT)；
Auxiliary electrode, in the flatness layer far from second one side of substrate, the auxiliary electrode is located at described non-luminescent for setting
Region, each auxiliary electrode are electrically connected by the via hole with the drain electrode of a thin film transistor (TFT).
5. array substrate according to claim 4, which is characterized in that further include the third branch positioned at the non-luminous region
Dagger；
The third support column is arranged between the auxiliary electrode and the flatness layer, the third support column and the auxiliary
Electrode corresponds；
Wherein, the auxiliary electrode on second substrate orthographic projection and the third support column on second substrate
Orthographic projection it is overlapping.
6. array substrate according to claim 5, which is characterized in that further include the 4th support positioned at the auxiliary area
Column, the thickness of the 4th support column are greater than the sum of the thickness of the third support column and the auxiliary electrode.
7. a kind of display panel, which is characterized in that including oled substrate described in claim 1 and described in claim 5 or 6
Array substrate；
Second electrode on the oled substrate is corresponded and is electrically connected with the auxiliary electrode in the array substrate.
8. display panel according to claim 7, which is characterized in that include the feelings of the 4th support column in the array substrate
Under condition, the sum of third support column, auxiliary electrode, thickness of second electrode three are less than or equal to the thickness of the 4th support column.
9. a kind of display panel, which is characterized in that including oled substrate described in claim 2 or 3 and as claimed in claim 4
Array substrate；
Second electrode on the oled substrate is corresponded and is electrically connected with the auxiliary electrode in the array substrate.
10. display panel according to claim 9, which is characterized in that in the oled substrate include the second support column
In the case of, the sum of the first support column, second electrode, thickness of auxiliary electrode three are less than or equal to the thickness of second support column
Degree.
11. a kind of display device, which is characterized in that including display panel described in claim 7 or 8；
Alternatively, including display panel described in claim 9 or 10.
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| CN109768182B (en) | 2023-07-28 |
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