CN106158917A - Luminescence display backboard, OLED and preparation method thereof - Google Patents
Luminescence display backboard, OLED and preparation method thereof Download PDFInfo
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- CN106158917A CN106158917A CN201610831809.8A CN201610831809A CN106158917A CN 106158917 A CN106158917 A CN 106158917A CN 201610831809 A CN201610831809 A CN 201610831809A CN 106158917 A CN106158917 A CN 106158917A
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- 238000004020 luminiscence type Methods 0.000 title abstract description 5
- 238000002360 preparation method Methods 0.000 title abstract 2
- 238000004806 packaging method and process Methods 0.000 claims abstract description 6
- 239000000758 substrate Substances 0.000 claims description 55
- 230000001154 acute effect Effects 0.000 claims description 13
- 239000010410 layer Substances 0.000 description 96
- 238000000034 method Methods 0.000 description 18
- 239000010408 film Substances 0.000 description 16
- 239000002184 metal Substances 0.000 description 12
- 238000004519 manufacturing process Methods 0.000 description 8
- 238000005538 encapsulation Methods 0.000 description 6
- 239000010409 thin film Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 239000002346 layers by function Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000002161 passivation Methods 0.000 description 3
- 238000004380 ashing Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000001312 dry etching Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 230000001788 irregular Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000004528 spin coating Methods 0.000 description 2
- 238000004544 sputter deposition Methods 0.000 description 2
- 238000001039 wet etching Methods 0.000 description 2
- 239000004642 Polyimide Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000005525 hole transport Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 229920002120 photoresistant polymer Polymers 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Classifications
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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
-
- 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
- H10K50/841—Self-supporting sealing arrangements
-
- 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
- H10K50/842—Containers
- H10K50/8428—Vertical spacers, e.g. arranged between the sealing arrangement and the OLED
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- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Electroluminescent Light Sources (AREA)
Abstract
The invention discloses a kind of luminescence display backboard, OLED and preparation method thereof, in the present invention, luminescence display backboard includes several organic light emitting displays being formed on array base palte, and it is arranged on the pixel defining layer between adjacent organic light emitting display, also include: be formed on described pixel defining layer, for supporting some supporters of the base plate for packaging being oppositely arranged with described luminescence display backboard；Wherein, above support includes supporting part；Described supporting part is being inverted trapezoidal with the tangent plane in the plane vertical direction of described array base palte place, and described inverted trapezoidal is length of the upper end more than going to the bottom length, and goes to the bottom and angle between waist is the trapezoidal of obtuse angle.Make contact layer and electrode layer be discrete structure by the present invention so that when contact layer deforms upon, electrode layer is not affected by deformation, improve stability and the reliability of OLED.
Description
The present application is a divisional application of chinese patent application 201410042653.6 entitled "light emitting display backplane, organic light emitting display and method of making the same" filed on 29.01.2014.
Technical Field
The invention relates to the field of display manufacturing, in particular to a light-emitting display back plate, an organic light-emitting display and a manufacturing method thereof.
Background
Organic Light Emitting Diodes (OLEDs) have characteristics of self-luminescence, fast response, wide viewing angle, and the like, and therefore, OLED-based Organic Light Emitting displays are mainstream products in the display field.
The organic light-emitting display based on the OLED comprises a light-emitting display back plate and an encapsulation substrate, a gap with a certain thickness exists between the light-emitting display back plate and the encapsulation substrate, and in order to avoid deformation of the encapsulation substrate and the light-emitting display back plate caused by uneven stress in the using process, a support used for supporting the encapsulation substrate arranged opposite to the light-emitting display back plate is generally arranged on the light-emitting display back plate.
Fig. 1A and 1B are schematic diagrams illustrating a conventional organic light emitting display, and a light emitting display backplane in fig. 1A and 1B generally includes a TFT (Thin Film Transistor) array substrate, a plurality of organic light emitting display devices (such as OLEDs) disposed on the array substrate, and a Pixel Definition Layer (PDL) disposed between adjacent organic light emitting display devices; a support 1 with a shape of narrow top and wide bottom is disposed on the pixel defining layer, and a contact layer 2 on the support 1 is generally formed by the same film forming process as an electrode layer 3 on a side of the organic light emitting display device close to the encapsulation substrate. As shown in fig. 1A and 1B, since the support 1 has a structure with a narrow top and a wide bottom, the contact layer 2 and the electrode layer 3 are a continuous whole, however, the contact layer 2 contacts the package substrate, when the stress is not uniform, the contact layer 2 is easily worn and deformed, and at this time, the contact layer 2 and the electrode layer 3 are a continuous whole, which inevitably causes the electrode layer 3 to be deformed, and the deformed electrode layer 3 is located in the light emitting display region, so that the normal display effect is affected, and the stability and reliability of the organic light emitting display are reduced.
Disclosure of Invention
The invention aims to provide a light-emitting display back plate and an organic light-emitting display, so that when a contact layer on a support is worn and deformed, an electrode layer of an organic light-emitting display device in a display area is not affected, and the electrode layer is not deformed due to the deformation of the contact layer, thereby improving the stability and reliability of the organic light-emitting display.
The purpose of the invention is realized by the following technical scheme:
in one aspect, a light-emitting display backplane is provided, which is applied to an organic light-emitting display with curved display, and includes a plurality of organic light-emitting display devices formed on an array substrate, and a pixel definition layer disposed between adjacent organic light-emitting display devices, and further includes: the plurality of supports are formed on the pixel definition layer and used for supporting the packaging substrate arranged opposite to the light-emitting display back plate; wherein the support comprises a support portion; wherein the support further comprises an upper top portion formed over the support portion; and the contact layer is covered on the upper surface of the upper top, the contact layer and the electrode on one side of the organic light-emitting display device close to the packaging substrate are arranged on the same layer, the shape of the upper top is a convex partial sphere, and the section of the sphere in the direction vertical to the plane of the array substrate is arc-shaped.
According to the embodiment of the invention, the contact layer and the electrode layer are naturally broken into two parts along the edge of the support by the same metal film, so that the contact layer and the electrode layer are separated, and when the contact layer is worn and deformed, the electrode layer of the organic light-emitting display device positioned in the display area is not influenced, so that the electrode layer is not deformed due to the deformation of the contact layer, and the stability and the reliability of the organic light-emitting display are improved.
Drawings
Fig. 1A and 1B are cross-sectional structural views of a conventional organic light emitting display device;
fig. 2A and fig. 2B are cross-sectional structural diagrams of a light-emitting display backplane according to an embodiment of the present invention;
FIG. 3 is a cross-sectional view of a support according to an embodiment of the present invention;
FIG. 4 is a cross-sectional view of a support according to an embodiment of the present invention;
FIG. 5 is a cross-sectional view of a support according to an embodiment of the present invention;
FIGS. 6A-6D are schematic cross-sectional views of an organic light emitting display according to an embodiment of the invention;
FIG. 7 is a flowchart illustrating a method for fabricating an organic light emitting display according to an embodiment of the present invention;
fig. 8A to 8G are schematic views illustrating a manufacturing process of an organic light emitting display according to an embodiment of the invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
An embodiment of the present invention provides a light emitting display backplane, as shown in fig. 2A, including a plurality of organic light emitting display devices 200 formed on an array substrate 100, a pixel definition layer 300 disposed between adjacent organic light emitting display devices, and a support 400 formed on the pixel definition layer 300, where the support 400 includes a support portion 401, a cross-section of the support portion 401 in a direction perpendicular to a plane of the array substrate 100 is an inverted trapezoid, a length of an upper base of the inverted trapezoid is greater than a length of a lower base, and an included angle between the lower base and a waist is an obtuse angle.
The support 400 in the embodiment of the present invention further includes an upper top 402, as shown in fig. 2B, the upper top 402 is formed on the support 401 and has a set contact area with the support 401, the set contact area can be set according to practical situations, and the upper top can be set to completely cover the upper top surface of the support or partially cover the upper top surface of the support.
The light-emitting display backplane in the embodiment of the present invention further includes a contact layer 501 covering the upper surface of the upper top 402, and the contact layer 501 is disposed in the same layer as the electrode on the side of the organic light-emitting display device 200 close to the encapsulation substrate and has the same material.
As shown in fig. 2A, an included angle between a lower bottom and a waist of the inverted trapezoid is an obtuse angle, and another included angle α between the inverted trapezoid and a plane where the array substrate is located is an acute angle, so that when a subsequent film forming process is performed, the metal thin film can be broken into two parts along an edge of the support, wherein one part of the organic functional layer covering the organic light emitting display device can be used as an electrode layer 201 of the organic light emitting display device, and another part of the upper surface covering the upper top 402 can be used as a contact layer 501, and a structure in which the contact layer 501 and the electrode layer 201 are separated can be formed without changing an existing film forming process, so that the process is simple.
According to the embodiment of the invention, the contact layer 501 and the electrode layer 201 are naturally broken into two parts along the edge of the support 400 by the same metal film, so that the contact layer 501 and the electrode layer 201 are separated, and when the contact layer is worn and deformed, the electrode layer of the organic light-emitting display device in the display area is not affected, so that the electrode layer is not deformed due to the deformation of the contact layer, and the stability and reliability of the organic light-emitting display device are improved.
The shape of the support in the embodiment of the present invention may be in various forms as long as it is ensured that, in the light emitting display back plate shown in fig. 2A, an included angle α between the side surface of the support 400 and the plane where the array substrate 100 is located is an acute angle.
Optionally, in order to simplify the manufacturing process in the embodiment of the present invention, the supporting portion 401 and the upper top portion 402 of the support 400 may be integrally formed, and the upper top portion 402 has a regular shape or an irregular shape integrally formed with the supporting portion 401. The regular shape according to the embodiment of the present invention may be a regular polygonal shape such as a trapezoid, and the irregular shape may be, for example, a curved shape having an uneven surface.
Alternatively, in the embodiment of the present invention, the support 400 may be integrally formed, and a cross-section of the support 400 in a direction perpendicular to a plane of the array substrate 100 is in a shape of an inverted trapezoid, that is, the upper top 402 and the support 401 are integrated, and a cross-section in a direction perpendicular to a plane of the array substrate 100 is in a shape of an inverted trapezoid, which can be seen in fig. 2A again.
In the support structure shown in fig. 2A of the embodiment of the present invention, an included angle between the bottom and the waist of the inverted trapezoid is an obtuse angle, so as to ensure that an included angle α between the support 400 and the plane where the array substrate 100 is located is an acute angle, and an included angle β between the top and the waist of the inverted trapezoid is an acute angle.
In another embodiment of the present invention, as shown in fig. 3, the top portion 402 of the support 400 is a convex partial sphere, and a cross section of the sphere in a direction perpendicular to a plane of the array substrate 100 is an arc shape, so that the light-emitting display backplane with the support structure can be applied to an organic light-emitting display with curved display.
Furthermore, an included angle β between the upper bottom and the waist of the inverted trapezoid is an acute angle, the edge angle of the acute angle β is easily broken and falls off, and the falling edge angle easily falls into the display area, thereby affecting normal display.
Further, another structure of the support 400 is provided in the embodiment of the present invention, as shown in fig. 4, in the structure of the support 400 shown in fig. 4, the sectional pattern of the support portion 401 is still an inverted trapezoid, the sectional pattern of the upper top portion 402 in the direction perpendicular to the plane of the array substrate 100 is a trapezoid, the included angle between the lower base and the waist of the trapezoid is an acute angle, the included angle between the upper base and the waist is an obtuse angle, and the length of the lower base of the trapezoid is smaller than the length of the upper base of the inverted trapezoid of the sectional pattern of the support portion 401 in the same direction. The support structure shown in fig. 4 can avoid the defect that the edge angle of the support is an acute angle and is easily damaged, and the sectional pattern of the upper top 402 is a trapezoidal structure, so that the contact area between the support and the package substrate can be increased under the condition that the edge angle is ensured to be an obtuse angle.
Fig. 5 is a schematic structural diagram of a support 400 according to an embodiment of the invention. In fig. 5, the sectional pattern of the supporting portion 401 is still an inverted trapezoid, the upper top portion 402 includes a first portion 4021 and a second portion 4022, and the second portion 4022 is formed on the first portion 4021, wherein the sectional plane of the first portion 4021 in the direction perpendicular to the plane of the array substrate 100 is an inverted trapezoid, the included angle between the lower base and the waist of the trapezoid is an acute angle, and the length of the trapezoid is smaller than the length of the upper base of the inverted trapezoid of the sectional pattern of the supporting portion 401 in the same direction. The second portion 4022 is shaped as a convex partial sphere, the section of the sphere in the direction perpendicular to the plane of the array substrate 100 is arc, the section of the sphere in the direction parallel to the plane of the array substrate 100 is circular, and the diameter of the circle is equal to the length of the upper base of the trapezoid formed by the section of the first portion 4021 in the direction perpendicular to the plane of the array substrate 100.
The support structure shown in fig. 5 can further avoid the defect that the acute edge of the support is damaged.
The support in the luminous display back plate provided by the embodiment of the invention comprises a support part and an upper top part, the section of the support part in the direction vertical to the plane of the array substrate is in an inverted trapezoid shape, the inverted trapezoid is a trapezoid with the length of the upper bottom larger than that of the lower bottom and the included angle between the lower bottom and the waist being an obtuse angle, so when a metal film is formed by the same film forming process, the metal film can be automatically cut off at the edge of the support to form an electrode layer of the organic light emitting display device and a contact layer on the support respectively, thereby making the contact layer and the electrode layer of the organic light emitting display device be separate structures, when the contact layer is worn and deformed, the electrode layer of the organic light emitting display device positioned in the display area is not affected, therefore, the electrode layer is not deformed due to the deformation of the contact layer, thereby improving the stability and reliability of the organic light emitting display.
In another embodiment of the present invention, an organic light emitting display is provided, which includes the light emitting display backplane mentioned above, and a package substrate disposed opposite to the display backplane.
The support structure in the light-emitting display backplane according to the embodiment of the present invention has any one of the support structures described in the above embodiments, and the cross-sectional structural schematic diagrams of the organic light-emitting display having the different support structures are shown in fig. 6A to 6D.
The support in the light-emitting display back plate of the organic light-emitting display comprises a support part and an upper top part, the section of the support part in the direction vertical to the plane of the array substrate is in an inverted trapezoid shape, the inverted trapezoid is a trapezoid with the length of the upper bottom larger than that of the lower bottom and the included angle between the lower bottom and the waist being an obtuse angle, so when a metal film is formed by the same film forming process, the metal film can be automatically cut off at the edge of the support to form an electrode layer of the organic light emitting display device and a contact layer on the support respectively, thereby making the contact layer and the electrode layer of the organic light emitting display device be separate structures, when the contact layer is worn and deformed, the electrode layer of the organic light emitting display device positioned in the display area is not affected, therefore, the electrode layer is not deformed due to the deformation of the contact layer, thereby improving the stability and reliability of the organic light emitting display.
Still another embodiment of the present invention further provides a method for manufacturing an organic light emitting display, as shown in fig. 7, including:
s701: an array substrate 100 is formed.
In the embodiment of the invention, a multi-layer structure 102 may be fabricated on a substrate base plate 101 to form an array base plate 100, as shown in fig. 8A. The substrate base plate 101 may include, but is not limited to, a glass base plate. The multi-layer structure 102 includes a gate electrode, a gate insulating layer, an insulating layer, a source drain electrode, and the like.
S702: the first electrode layer 202 of the organic light emitting display device 200 is formed.
Specifically, in the embodiment of the present invention, the first electrode layer 202 is formed on the passivation layer 210, in the embodiment of the present invention, the passivation layer 210 having a set thickness may be formed by, for example, a sputtering process, a through hole is formed on the passivation layer 210 by wet etching, then, a conductive thin film having a set thickness is formed by, for example, a sputtering process, and a regular pattern is formed by wet etching, so as to form the first electrode layer 202 of the organic light emitting display device 200, and the first electrode layer 202 of the organic light emitting display device 200 is connected to the source electrode or the drain electrode in the multilayer structure 102 through the through hole, as shown in fig. 8.
S703: a pixel defining layer 300 is formed.
Specifically, the embodiment of the invention may use a process such as spin coating to spin coat an insulating organic material (e.g., polyimide) between the adjacent first electrode layers 202 and cover a portion of the first electrode layer 202, as shown in fig. 8C. The thickness of the pixel defining layer 300 is typically about 1 micron.
S704: several supports 400 including a support portion 401 and an upper top portion are formed on the pixel defining layer 300.
Specifically, in the embodiment of the present invention, a negative photoresist having good pattern forming capability, strong mechanical properties, a high thermal expansion coefficient, and stable electrical properties is used, and the structure of the support 400 is formed through spin coating, exposure, hardening, developing, main curing for development, and baking.
In the embodiment of the invention, the support 400 is manufactured by adjusting the firm film (temperature: 120 ℃ and time 150 seconds), the exposure dose (20 mj/cm 2) and the development strength (concentration of the developing solution: 0.36% and walking speed: 1.2 m/min), so that the section of the supporting part 401 of the support 400 in the direction vertical to the plane of the array substrate 100 is in a reversed trapezoid shape, the length of the upper bottom of the reversed trapezoid is greater than that of the lower bottom of the reversed trapezoid, and the included angle between the lower bottom and the waist is an obtuse angle; the upper top 402 is formed above the support portion 401 and has a set contact area with the support portion 401, as shown in fig. 8D.
Specifically, according to the actual requirements, different mask processes may be adopted in the embodiment of the present invention, so that the bottom pattern of the contact between the support portion 401 and the pixel defining layer 300 is circular, square, or rectangular, and the top pattern of the contact between the upper top portion 402 and the package substrate may also be corresponding circular, square, or rectangular.
Optionally, in order to further optimize the structure of the support 400 and simplify the process in the embodiment of the invention, the support portion 401 and the upper top portion 402 of the support 400 may be integrally formed on the pixel defining layer 300, and the cross-section of the upper top portion 402 and the support portion 401 as a whole in the direction perpendicular to the plane of the array substrate 100 is in the shape of an inverted trapezoid.
Further, in the embodiment of the present invention, the first dry etching ashing process may be performed on the upper top portion 402, so that the shape of the upper top portion 402 is a convex partial sphere, a cross section of the sphere in a direction parallel to the plane of the array substrate 100 is a circle, a diameter of the circle is equal to an upper bottom length of an inverted trapezoid formed by a cross section of the support portion 401 in a direction perpendicular to the plane of the array substrate 100, so that an upper top edge of the support is an obtuse angle.
Furthermore, in the embodiment of the present invention, the second dry etching ashing process may be performed on the upper top 402, so that a section of the upper top 402 in a direction perpendicular to the plane of the array substrate 100 is trapezoidal, an included angle between a lower bottom edge and a waist of the trapezoid is an acute angle, and the length of the lower bottom edge is smaller than the length of the upper bottom edge of the inverted trapezoid, so that the contact area between the support and the package substrate can be increased under the condition that the edge angle is an obtuse angle.
Preferably, the support 400 can be formed in the following manner in the embodiment of the present invention:
a support portion 401 is formed over the pixel defining layer 300.
On the supporting portion 401, a first portion 4021 at the top is formed, a section of the first portion 4021 in a direction perpendicular to a plane of the array substrate 100 is trapezoidal, an included angle between a lower base and a waist of the trapezoid is an acute angle, and the length of the trapezoid is smaller than that of an upper base of an inverted trapezoid of the sectional pattern of the supporting portion 401.
On the first portion 4021, a second portion 4022 having an upper top is formed, and the second portion 4022 has a shape of a convex partial sphere whose cross section in a direction parallel to the plane of the array substrate 100 is circular, and the diameter of the circle is equal to the length of the upper bottom of a trapezoid formed by the cross section of the first portion 4021 in a direction perpendicular to the plane of the array substrate 100.
S705: the organic functional layer 203 of the organic light emitting display device 200 is formed as shown in fig. 8E.
Specifically, the organic functional layers of the organic light emitting display device 200 in the embodiment of the present invention include, but are not limited to, a hole injection layer, a hole transport layer, a light emitting layer, an electron transport layer, an electron injection layer, and the like.
S706: a metal thin film is formed through the same film forming process, the metal thin film is naturally broken at the edge portion of the support 400, and the broken metal thin film forms a second electrode layer 401 of the organic light emitting display device and a contact layer covering the upper surface of the top portion 402 of the support 400, respectively, as shown in fig. 8F.
S707: and encapsulating the packaging substrate to form the organic light-emitting display device.
Specifically, after the fabrication of the light emitting display backplane of the organic light emitting display device is completed in the embodiment of the present invention, the package substrate 600 may be packaged together by the frame sealing glue to form the organic light emitting display device, as shown in fig. 8G.
Of course, according to the embodiments of the present invention, structures of the organic light emitting display device, such as those shown in fig. 6A to 6B, may be formed according to different structures of the support in S704.
The support in the light-emitting display back plate of the organic light-emitting display comprises a support part and an upper top part, the section of the support part in the direction vertical to the plane of the array substrate is in an inverted trapezoid shape, the inverted trapezoid is a trapezoid with the length of the upper bottom larger than that of the lower bottom and the included angle between the lower bottom and the waist being an obtuse angle, so when a metal film is formed by the same film forming process, the metal film can be automatically cut off at the edge of the support to form an electrode layer of the organic light emitting display device and a contact layer on the support respectively, thereby making the contact layer and the electrode layer of the organic light emitting display device be separate structures, when the contact layer is worn and deformed, the electrode layer of the organic light emitting display device positioned in the display area is not affected, therefore, the electrode layer is not deformed due to the deformation of the contact layer, thereby improving the stability and reliability of the organic light emitting display.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (5)
1. The utility model provides a luminous display backplate, is applied to the organic light emitting display that curved surface shows, including forming a plurality of organic light emitting display device on the array substrate to and set up the pixel definition layer between adjacent organic light emitting display device, its characterized in that still includes: the plurality of supports are formed on the pixel definition layer and used for supporting the packaging substrate arranged opposite to the light-emitting display back plate; wherein,
the support comprises a support part;
wherein the support further comprises an upper top portion formed over the support portion; and the contact layer is covered on the upper surface of the upper top, the contact layer and the electrode on one side of the organic light-emitting display device close to the packaging substrate are arranged on the same layer, the shape of the upper top is a convex partial sphere, and the section of the sphere in the direction vertical to the plane of the array substrate is arc-shaped.
2. The back plate of claim 1, wherein the cross-section of the support portion in a direction perpendicular to the plane of the array substrate is an inverted trapezoid, wherein the inverted trapezoid is a trapezoid having an upper base longer than a lower base, and an included angle between the lower base and the waist is an obtuse angle.
3. The luminescent display backplane according to claim 2, wherein the upper top portion and the support portion as a whole have a cross-section in a direction perpendicular to a plane of the array substrate in the shape of the inverted trapezoid.
4. The luminescent display backplane of claim 1, wherein the upper top portion comprises a first portion and a second portion, the second portion being formed over the first portion, wherein,
the section of the first part in the direction perpendicular to the plane of the array substrate is trapezoidal, the included angle between the lower bottom edge and the waist of the trapezoid is an acute angle, and the length of the lower bottom edge of the trapezoid is smaller than that of the upper bottom edge of the inverted trapezoid;
the second part is a convex partial sphere, the section of the sphere in the direction parallel to the plane of the array substrate is a circle, and the diameter of the circle is equal to the length of the upper bottom of a trapezoid formed by the section of the first part in the direction perpendicular to the plane of the array substrate.
5. An organic light emitting display comprising the light emitting display backplane according to any one of claims 1 to 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610831809.8A CN106158917A (en) | 2014-01-29 | 2014-01-29 | Luminescence display backboard, OLED and preparation method thereof |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410042653.6A CN103794634B (en) | 2014-01-29 | 2014-01-29 | Luminescence display backboard, OLED and preparation method thereof |
| CN201610831809.8A CN106158917A (en) | 2014-01-29 | 2014-01-29 | Luminescence display backboard, OLED and preparation method thereof |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410042653.6A Division CN103794634B (en) | 2014-01-29 | 2014-01-29 | Luminescence display backboard, OLED and preparation method thereof |
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|---|---|
| CN106158917A true CN106158917A (en) | 2016-11-23 |
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| CN201410042653.6A Active CN103794634B (en) | 2014-01-29 | 2014-01-29 | Luminescence display backboard, OLED and preparation method thereof |
| CN201610831809.8A Pending CN106158917A (en) | 2014-01-29 | 2014-01-29 | Luminescence display backboard, OLED and preparation method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106910841A (en) * | 2017-03-31 | 2017-06-30 | 昆山国显光电有限公司 | Array base palte and its manufacture method and OLED |
| CN111146256A (en) * | 2019-12-13 | 2020-05-12 | 固安翌光科技有限公司 | High-stability organic light-emitting diode |
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Also Published As
| Publication number | Publication date |
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| CN103794634B (en) | 2016-10-19 |
| CN103794634A (en) | 2014-05-14 |
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