CN207441754U - A kind of OLED display panel, OLED display - Google Patents
A kind of OLED display panel, OLED display Download PDFInfo
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- CN207441754U CN207441754U CN201721640595.2U CN201721640595U CN207441754U CN 207441754 U CN207441754 U CN 207441754U CN 201721640595 U CN201721640595 U CN 201721640595U CN 207441754 U CN207441754 U CN 207441754U
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Abstract
The utility model provides a kind of OLED display panel, OLED display, by in non-display area, the one side away from underlay substrate sets concaveconvex structure on planarization layer, after organic light emitting functional layer and the first inorganic encapsulated layer are formed on planarization layer, organic luminescence function layer and the first encapsulated layer are non-planar surface with the corresponding position of concaveconvex structure, i.e., the concaveconvex structure that with the corresponding position of concaveconvex structure also to form shape on organic luminescence function layer and the first encapsulated layer identical；When forming organic second encapsulated layer, the non-planar surface of first encapsulated layer can stop the flowing of the second encapsulated layer to a certain extent, reduce its mobility, reduce the climbing distance at the second encapsulated layer edge, increase edge stress and the angle of gradient, so as to fulfill product narrow frame design, and improve the second encapsulated layer edge thickness homogeneity, it avoids non-display area mura bad, ensures packaging effect.
Description
Technical field
The utility model belongs to display technology field, and in particular to a kind of OLED display panel, OLED display.
Background technology
OLED (Organic Light-Emitting Diode, Organic Light Emitting Diode) devices are consolidated entirely due to what it had
The series of advantages such as state structure, high brightness, full visual angle, fast response time, wide, the achievable Flexible Displays of operating temperature range, mesh
Before have become the next-generation display technology of great competitiveness and development prospect.The luminous organic material that is used in OLED device and
Cathode material is especially sensitive to water and oxygen, the excessively moist or excessively high service life that will all influence OLED device of oxygen content.
In order to effectively obstruct the influence of water and oxygen to OLED device, it is necessary to be packaged to it.
TFE (thin film encapsulation technology) the encapsulation oxygen barrier effect that blocks water is outstanding, and can correspond to flexible package, it has also become flexible OLED
The mainstream encapsulation technology of display panel encapsulation.It is liquid before curing due to organic encapsulation layer but in TFE encapsulation process, flowing
Property it is larger, it is difficult to accurately control its diffusion so that it is easily flowed out, cause OLED display panel obturation effect be deteriorated.In addition, have
The machine encapsulated layer edge angle of gradient is also smaller, edge thickness homogeneity is poor, and climbing is in larger distance, it is difficult to realize product narrow frame.
Therefore there is an urgent need for a kind of OLED display panel, OLED displays to solve the above problems.
Utility model content
The utility model is directed to above-mentioned deficiency in the prior art, provides a kind of OLED display panel, OLED is shown
Device, at least partly to solve OLED display panel in encapsulation process, organic second encapsulated layer mobility is difficult to control,
The problem of edge in larger distance and caliper uniformity of climbing is poor.
The utility model provides a kind of OLED display panel, including underlay substrate and is sequentially formed at the underlay substrate
On planarization layer, organic luminescence function layer, the first encapsulated layer and the second encapsulated layer, first encapsulated layer be inorganic layer, institute
The second encapsulated layer is stated as organic layer；One side of the planarization layer away from the underlay substrate is provided with concaveconvex structure, described recessed
Male structure is located at the non-display area of the OLED display panel；
One side of first encapsulated layer away from the organic luminescence function layer and the corresponding position of the concaveconvex structure
For non-planar surface；Described in the first encapsulated layer and the part of the neighbouring viewing area of covering in the second encapsulated layer covering viewing area
Corresponding first encapsulated layer of concaveconvex structure.
Further, the OLED display panel further includes the first barricade, and first barricade is located at the concaveconvex structure
One side away from the viewing area, and be arranged between the organic luminescence function layer and first encapsulated layer.
Further, the OLED display panel further includes the second barricade, and second barricade is arranged on organic hair
Between light functional layer and first encapsulated layer, and it is located at the one side of first barricade away from the viewing area, described second
The height of barricade is more than the height of first barricade.
Further, the OLED display panel further includes the 3rd encapsulated layer, and the 3rd encapsulated layer is formed in described
On one encapsulated layer and second encapsulated layer, and cover second encapsulated layer and not by second encapsulated layer covering described in
First encapsulated layer.
Preferably, the concaveconvex structure includes multiple lug bosses, and recessed portion is formed between the adjacent lug boss.
Preferably, the shape of each lug boss is identical.
Preferably, each lug boss is connected with each other.
Preferably, the lug boss is zigzag.
Preferably, the lug boss is the zigzag of isosceles triangle or right angled triangle.
Preferably, each lug boss is arranged at intervals.
Preferably, the lug boss is rectangle or trapezoidal.
The utility model also provides a kind of OLED display, including OLED display panel as previously described.
The utility model has the advantages that：
The utility model is by the way that in non-display area, the one side away from underlay substrate sets concave-convex knot on planarization layer
Structure, after organic light emitting functional layer and the first inorganic encapsulated layer are formed on planarization layer, organic luminescence function layer and the first envelope
It is non-planar surface that layer, which is filled, with the corresponding position of concaveconvex structure, i.e., is tied on organic luminescence function layer and the first encapsulated layer with bumps
The corresponding position of structure also forms the identical concaveconvex structure of shape；When forming organic second encapsulated layer, the first encapsulated layer
Non-planar surface can stop the flowing of the second encapsulated layer to a certain extent, reduce its mobility, reduce the second encapsulated layer side
The climbing distance of edge increases edge stress and the angle of gradient, so as to fulfill product narrow frame design, and improves the second encapsulated layer edge
Caliper uniformity avoids non-display area mura bad, ensures packaging effect.
Description of the drawings
Fig. 1 a are one of view of packaging plastic of relevant OLED display panel；
Fig. 1 b are the two of the view of the packaging plastic of relevant OLED display panel；
Fig. 2 is the structure diagram of the non-display area of OLED display panel provided by the utility model；
Fig. 3 a- Fig. 3 d are the schematic diagram of concaveconvex structure provided by the utility model；
Fig. 4 is the preparation flow figure of OLED display panel shown in Fig. 2.
Reference numeral：
1st, underlay substrate 2, backboard 3, planarization layer
4th, organic luminescence function layer 51, the first encapsulated layer 52, the second encapsulated layer
53rd, the 3rd encapsulated layer 31, concaveconvex structure 61, the first barricade
62nd, the second barricade 311, lug boss 312, recessed portion
Specific embodiment
It is below in conjunction with the accompanying drawings and specific real for those skilled in the art is made to more fully understand the technical solution of the utility model
Mode is applied to be described in further detail the utility model.
With reference to as shown in Fig. 2, the utility model provides a kind of OLED display panel, the OLED display panel includes：Lining
Substrate 1 and backboard (Back Plate, BP) 2, planarization layer (PVD) 3, the You Jifa being sequentially formed on underlay substrate 1
Light functional layer 4, the first encapsulated layer 51 and the second encapsulated layer 52.Organic luminescence function layer 4 can include：Anode, hole injection layer,
Hole transmission layer, luminescent layer, electron transfer layer, electron injecting layer and cathode.The material of first encapsulated layer 51 is inorganic material, can
To prepare to be formed by CVD (Chemical Vapor Deposition, chemical vapor deposition) mode, the second encapsulated layer 52
Material is organic material, can prepare to be formed by inkjet printing mode.
One side of the planarization layer 3 away from underlay substrate 1 is provided with concaveconvex structure 31, and concaveconvex structure 31 is located at the OLED and shows
Show the non-display area of panel.As shown in Fig. 2, being the non-display area of OLED display panel on the left of dotted line, shown on the right side of dotted line for OLED
Show the viewing area (i.e. AA areas) of panel.Since organic luminescence function layer 4 is arranged on planarization layer 3, the first encapsulated layer 51 is set
On organic luminescence function layer, one side of the organic luminescence function layer 4 away from planarization layer 3 and 31 corresponding position of concaveconvex structure
It is set to non-planar surface, the first one side of the encapsulated layer 51 away from organic luminescence function layer 4 and 31 corresponding position of concaveconvex structure
For non-planar surface, the second encapsulated layer 52 covers the first encapsulated layer 51 in viewing area and the part of the neighbouring viewing area of covering is concave-convex
31 corresponding first encapsulated layer 31 of structure.Second encapsulated layer 52 covers entire viewing area, and flows to non-display area from viewing area,
Stopped in non-display area by the non-planar surface of the first encapsulated layer 51 formed by concaveconvex structure 31.As shown in Fig. 2, the second envelope
The angle of gradient at 52 edge of layer is filled as α 2, the angle of gradient α 2 at 52 edge of the second encapsulated layer in the utility model, than existing second
Angle of gradient α 1 (as shown in Figure 1 b) bigger at 52 edge of encapsulated layer, correspondingly, the climbing distance L2 of the second encapsulated layer 52 compared with
The climbing distance L1 smallers of existing second encapsulated layer 52 shown in Fig. 1 b.
The non-planar surface refers to there is the surface of the concaveconvex structure identical with 31 shape of concaveconvex structure.
OLED display panel provided by the utility model, by non-display area, away from substrate base on planarization layer 3
The one side of plate 1 sets concaveconvex structure 31, and organic light emitting functional layer 4 and the first inorganic encapsulated layer 51 are formed on planarization layer 3
Afterwards, 4 and first encapsulated layer 51 of organic luminescence function layer and 31 corresponding position of concaveconvex structure are non-planar surface, i.e., organic hair
The concaveconvex structure that with 31 corresponding position of concaveconvex structure also to form shape on 4 and first encapsulated layer 51 of light functional layer identical；
When forming organic second encapsulated layer 52, the non-planar surface of the first encapsulated layer 51 can stop the second encapsulation to a certain extent
The flowing of layer 52 reduces its mobility, reduces the climbing distance at 52 edge of the second encapsulated layer, increases edge stress and the angle of gradient,
So as to fulfill product narrow frame design, and 52 edge thickness homogeneity of the second encapsulated layer is improved, avoids non-display area mura bad,
Ensure packaging effect.
Further, as shown in Fig. 2, the OLED display panel further includes the first barricade 61, the first barricade 61 is located at recessed
One side of the male structure 31 away from viewing area, and be arranged between 4 and first encapsulated layer 51 of organic luminescence function layer, that is to say, that
Concaveconvex structure 31 is located at the first barricade 61 adjacent to the one side of viewing area.Due to the portion of the neighbouring viewing area of 52 coverings of the second encapsulated layer
Divide 31 corresponding first encapsulated layer 51 of concaveconvex structure, therefore, the second encapsulated layer 52 will not flow out the first barricade 61, so as to ensure
State the obturation effect of OLED display panel.
Further, in order to further ensure the obturation effect of the OLED display panel, as shown in Fig. 2, the OLED
Display panel can also include the second barricade 62, the second barricade 62 be arranged on 4 and first encapsulated layer 51 of organic luminescence function layer it
Between, and being located at the first one side of the barricade 61 away from viewing area, i.e. the second barricade 62 is more neighbouring described compared to the first barricade 61
The edge of OLED display panel.The height of second barricade 62 is more than the height of the first barricade 61, in this way, even if the second encapsulated layer 52
It flows out, can also be stopped by the second barricade 62, so as to ensure packaging effect from the first barricade 61.
Further, as shown in Fig. 2, the OLED display panel further includes the 3rd encapsulated layer 53,53 shape of the 3rd encapsulated layer
Into on the first encapsulated layer 51 and the second encapsulated layer 52, and cover what is stated the second encapsulated layer 52 and do not covered by the second encapsulated layer 52
First encapsulated layer 51.That is, in the 31 corresponding region of part concaveconvex structure and viewing area of neighbouring viewing area, the 3rd envelope
Dress layer 53 is set directly on the second encapsulated layer 52, and in other non-display areas in addition to the part concaveconvex structure 31,
Due to no second encapsulated layer 52, the 3rd encapsulated layer 53 is set directly on the first encapsulated layer 51, in this way, the 3rd encapsulated layer 53,
Second encapsulated layer 52 and the first encapsulated layer 51 realize the encapsulation to the OLED display panel jointly.
Below in conjunction with Fig. 3 a- Fig. 3 d, the concrete structure of concaveconvex structure 31 is described in detail.
As shown in Fig. 3 a- Fig. 3 d, concaveconvex structure 31 includes multiple lug bosses 311, is formed between adjacent lug boss 311 recessed
Concave portion 312, concaveconvex structure 31 can be formed by mask plate by photoetching process.
Preferably, the shape of each lug boss 311 is identical.
In the utility model embodiment, each lug boss 311 is identical with the shape of each recessed portion 312.It should be noted that
The shape of each lug boss 311 and each recessed portion 312 can not also be same, as long as surface of the planarization layer 3 away from underlay substrate 1 is non-
Flat surfaces, and the non-planar surface can ensure after completion 4 and first encapsulated layer 51 of organic luminous layer is prepared, and make first
Surface of the encapsulated layer 51 away from underlay substrate 1 remains as non-planar surface.
Referring to Fig. 3 a and Fig. 3 b, each lug boss 311 can be connected with each other, it is preferred that each lug boss 311 and each recessed portion
312 can be zigzag.As shown in Figure 3a, each lug boss 311 and each recessed portion 312 can be the zigzag of isosceles triangle.
As shown in Figure 3b, each lug boss 311 and the zigzag of each recessed portion 312 or right angled triangle.
Referring to Fig. 3 c and Fig. 3 d, each lug boss 311 can also be arranged at intervals, as shown in Figure 3c, each lug boss 311 and each recessed
Concave portion 312 can be rectangle.As shown in Figure 3d, each lug boss 311 and each recessed portion 312 can be trapezoidal.
It should be noted that the concrete shape of the lug boss 311 and recessed portion 312 in the utility model embodiment simply shows
Meaning property for example, skilled person will appreciate that, lug boss 311 and recessed portion 312 be not limited to more than shape.
If the second encapsulated layer 52 flows out the first barricade 61 and the second barricade 62, the 3rd encapsulated layer 53 is difficult to effectively package the
Two encapsulated layers 52, the water oxygen in external environment are easily accessible inside display device, corrode organic luminous layer 4, cause display blackspot.
The utility model forms concaveconvex structure 31 by the upper surface of the planarization layer 3 in non-display area so that positioned at flat
The surface of organic luminous layer 4 and the first inorganic encapsulated layer 51 on smoothization layer 3 is respectively formed corresponding structure (i.e. non-flat forms table
Face), by the file printing of organic second encapsulated layer 52 in the non-planar surface after, which can slow down second
The flow velocity of the material of encapsulated layer 52, prevents it from flowing through barricade, so as to increase the angle of gradient at 52 edge of the second encapsulated layer, and keeps the
Two encapsulated layers, 52 caliper uniformity can so improve what the second encapsulated layer 52 leakage that traditional TFE encapsulation is susceptible to was brought
The bad problems of Mura caused by showing blackspot problem and non-display area film uniformity difference.
The utility model also provides a kind of OLED display, and the OLED display is shown including foregoing OLED
Show panel.
The OLED display, which can be that Electronic Paper, mobile phone, tablet computer, television set, Digital Frame etc. are any, to be had
The product or component of crystal display.
OLED display provided by the utility model, by non-display area, away from substrate base on planarization layer 3
The one side of plate 1 sets concaveconvex structure 31, and organic light emitting functional layer 4 and the first inorganic encapsulated layer 51 are formed on planarization layer 3
Afterwards, 4 and first encapsulated layer 51 of organic luminescence function layer and 31 corresponding position of concaveconvex structure are non-planar surface, i.e., organic hair
The concaveconvex structure that with 31 corresponding position of concaveconvex structure also to form shape on 4 and first encapsulated layer 51 of light functional layer identical；
When forming organic second encapsulated layer 52, the non-planar surface of the first encapsulated layer 51 can stop the second encapsulation to a certain extent
The flowing of layer 52 reduces its mobility, reduces the climbing distance at 52 edge of the second encapsulated layer, increases edge stress and the angle of gradient,
So as to fulfill product narrow frame design, and 52 edge thickness homogeneity of the second encapsulated layer is improved, avoids non-display area mura bad,
Ensure packaging effect.
In order to clearly illustrate the technical solution of the utility model, below to the preparation of the OLED display panel of the utility model
Method is described in detail.The preparation method of the OLED display panel is used to prepare foregoing OLED display panel, knot
Shown in conjunction Fig. 2, Fig. 3 a- Fig. 3 d and Fig. 4, it the described method comprises the following steps：
Step 101, planarization layer 3 is formed on underlay substrate 1, and passes through patterning processes in planarization layer 3 away from substrate
The one side of substrate 1 forms the figure of concaveconvex structure 31.
Specifically, the figure of concaveconvex structure 31 is located at the non-display area of the OLED display panel, concrete structure can be with
For the structure shown in Fig. 3 a- Fig. 3 d, details are not described herein.
Step 102, organic light emitting functional layer 4, the first envelope are sequentially formed on the underlay substrate 1 for being formed with planarization layer 3
Fill 51 and second encapsulated layer 52 of layer.
Specifically, the first encapsulated layer 51 is inorganic layer, and the one side away from organic luminescence function layer 4 and concaveconvex structure 31
Corresponding position be non-planar surface, the second encapsulated layer 52 be organic layer, and cover viewing area in the first encapsulated layer 51 and
31 corresponding first encapsulated layer 51 of part concaveconvex structure of the neighbouring viewing area of covering.
It should be noted that it after organic light emitting functional layer 4 is formed, is formed before the first encapsulated layer 51, the method
It can also comprise the following steps：
In non-display area, the first barricade 61 and the second barricade 62 are formed by patterning processes.Wherein, the first barricade 61 and
Two barricades 62 are located at one side of the concaveconvex structure 31 away from viewing area, and are arranged on 4 and first encapsulated layer 51 of organic luminescence function layer
Between, 61 to the second barricade 62 of the first barricade is adjacent to viewing area, and the height of the second barricade 62 is more than the height of the first barricade 61.
Can be seen that the preparation method of OLED display panel provided by the utility model by step 101-102, by
In non-display area, the one side away from underlay substrate 1 sets concaveconvex structure 31 on planarization layer 3, is formed on planarization layer 3
After machine light emitting functional layer 4 and the first inorganic encapsulated layer 51,4 and first encapsulated layer 51 of organic luminescence function layer and concaveconvex structure 31
Corresponding position is non-planar surface, i.e., corresponding with concaveconvex structure 31 on 4 and first encapsulated layer 51 of organic luminescence function layer
Position also form the identical concaveconvex structure of shape；When forming organic second encapsulated layer 52, the first encapsulated layer 51 it is non-flat
Smooth surface can stop the flowing of the second encapsulated layer 52 to a certain extent, reduce its mobility, reduce 52 side of the second encapsulated layer
The climbing distance of edge increases edge stress and the angle of gradient, so as to fulfill product narrow frame design, and improves 52 side of the second encapsulated layer
Edge thickness homogeneity avoids non-display area mura bad, ensures packaging effect.The preparation method of the utility model, can be to existing
Some mask plates are transformed, and will not increase patterning processes, and preparation process flow is also constant, it is easy to accomplish.
Further, as shown in figure 4, formed the second encapsulated layer 52 (i.e. after step 102), the OLED display panel
Preparation method is further comprising the steps of：
Step 103, the 3rd encapsulated layer is formed on the underlay substrate 1 of the first encapsulated layer 51 and the second encapsulated layer 52 is formed with
53。
Specifically, the 3rd encapsulated layer 53 covers the second encapsulated layer 52 and the first encapsulated layer not covered by the second encapsulated layer 52
51。
It is understood that embodiment of above is merely to illustrate that the principle of the utility model and uses exemplary
Embodiment, however the utility model is not limited thereto.For those skilled in the art, this is not being departed from
In the case of the spirit and essence of utility model, various changes and modifications can be made therein, these variations and modifications are also considered as this reality
With new protection domain.
Claims (12)
1. a kind of OLED display panel including underlay substrate and the planarization layer being sequentially formed on the underlay substrate, has
Machine light emitting functional layer, the first encapsulated layer and the second encapsulated layer, first encapsulated layer are inorganic layer, and second encapsulated layer is to have
Machine layer；It is characterized in that, one side of the planarization layer away from the underlay substrate is provided with concaveconvex structure, the concaveconvex structure
Positioned at the non-display area of the OLED display panel；
One side of first encapsulated layer away from the organic luminescence function layer, with the corresponding position of the concaveconvex structure to be non-
Flat surfaces；The part bumps of the first encapsulated layer and the neighbouring viewing area of covering in the second encapsulated layer covering viewing area
Corresponding first encapsulated layer of structure.
2. OLED display panel as described in claim 1, which is characterized in that further include the first barricade, the first barricade position
In one side of the concaveconvex structure away from the viewing area, and it is arranged on the organic luminescence function layer and first encapsulated layer
Between.
3. OLED display panel as claimed in claim 2, which is characterized in that further include the second barricade, second barricade is set
It puts between the organic luminescence function layer and first encapsulated layer, and positioned at first barricade away from the viewing area
One side, the height of second barricade are more than the height of first barricade.
4. OLED display panel as described in claim 1, which is characterized in that further include the 3rd encapsulated layer, the 3rd encapsulation
Layer covers second encapsulated layer and first encapsulated layer not covered by second encapsulated layer.
5. such as claim 1-4 any one of them OLED display panels, which is characterized in that the concaveconvex structure includes multiple convex
The portion of rising is formed with recessed portion between the adjacent lug boss.
6. OLED display panel as claimed in claim 5, which is characterized in that the shape of each lug boss is identical.
7. OLED display panel as claimed in claim 5, which is characterized in that each lug boss is connected with each other.
8. OLED display panel as claimed in claim 7, which is characterized in that the lug boss is zigzag.
9. OLED display panel as claimed in claim 8, which is characterized in that the lug boss is isosceles triangle or right angle three
Angular zigzag.
10. OLED display panel as claimed in claim 5, which is characterized in that each lug boss is arranged at intervals.
11. OLED display panel as claimed in claim 10, which is characterized in that the lug boss is rectangle or trapezoidal.
12. a kind of OLED display, which is characterized in that including the OLED display panel as described in claim any one of 1-11.
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