CN103794634A - Light-emitting display back panel, organic light emitting displayer and manufacturing method of light-emitting display back panel and organic light emitting displayer - Google Patents
Light-emitting display back panel, organic light emitting displayer and manufacturing method of light-emitting display back panel and organic light emitting displayer Download PDFInfo
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- CN103794634A CN103794634A CN201410042653.6A CN201410042653A CN103794634A CN 103794634 A CN103794634 A CN 103794634A CN 201410042653 A CN201410042653 A CN 201410042653A CN 103794634 A CN103794634 A CN 103794634A
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- 238000004806 packaging method and process Methods 0.000 claims abstract description 18
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- 230000004048 modification Effects 0.000 description 3
- 238000002161 passivation Methods 0.000 description 3
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- 238000004544 sputter deposition Methods 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- 238000001039 wet etching Methods 0.000 description 2
- 239000004642 Polyimide Substances 0.000 description 1
- 241000826860 Trapezium Species 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
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- 238000005538 encapsulation Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
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- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
- H10K59/122—Pixel-defining structures or layers, e.g. banks
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- H—ELECTRICITY
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- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
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- H10K50/841—Self-supporting sealing arrangements
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
- H10K50/84—Passivation; Containers; Encapsulations
- H10K50/842—Containers
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Abstract
The invention discloses a light-emitting display back panel, an organic light emitting displayer and a manufacturing method of the light-emitting display back panel and the organic light emitting displayer. The light-emitting display back panel comprises a plurality of organic light emitting displayers formed on an array substrate and pixel definition layers between adjacent organic light emitting displayers. The light-emitting display back panel further comprises a plurality of supporting objects which are formed on the pixel definition layers and used for supporting packaging substrates arranged opposite to the light-emitting display back panel. Each supporting object comprises a supporting part, the cross sections of the supporting parts in the direction perpendicular to a plane where the array substrate is located are in inverted trapezoidal shapes which are trapezoids, the trapezoids are characterized in that the lengths of the upper bottoms of the inverted trapezoidal shapes are larger than the lengths of the lower bottoms of the inverted trapezoidal shapes, and included angles between the lower bottoms and the slant edges are obtuse angles. According to the light-emitting display back panel, the organic light emitting displayer and the manufacturing method, a contact layer and an electrode layer are of a discrete structure, the electrode layer cannot be influenced by deformation when the contact layer is deformed, and the stability and the reliability of the organic light emitting displayer are improved.
Description
Technical field
The present invention relates to display and make field, relate in particular to a kind of luminescence display backboard, organic light emitting display and preparation method thereof.
Background technology
Organic Light Emitting Diode (Organic Light Emitting Diode, OLED), has the features such as self-luminous, response fast, wide visual angle because of it, become the main product in demonstration field take OLED as basic organic light emitting display.
Comprise luminescence display backboard and base plate for packaging take OLED as basic organic light emitting display, between luminescence display backboard and base plate for packaging, there is certain thickness space, cause distortion for fear of base plate for packaging in use procedure and luminescence display backboard because of unbalance stress, on luminescence display backboard, operated by rotary motion is useful on the supporter that supports the base plate for packaging being oppositely arranged with luminescence display backboard.
Figure 1A and Figure 1B are the formation schematic diagram of existing organic light emitting display, in Figure 1A and Figure 1B, luminescence display backboard generally comprises TFT(Thin Film Transistor, thin-film transistor) array base palte, be positioned at several organic light emitting displays (such as OLED) on array base palte and be arranged on the pixel defining layer (Pixel Define Layer, PDL) between adjacent organic light emitting display; In pixel defining layer, be provided with and be shaped as up-narrow and down-wide supporter 1, the electrode layer 3 of general close base plate for packaging one side with organic light emitting display of contact layer on supporter 12 adopts same film-forming process formation.From Figure 1A and Figure 1B, because supporter 1 is up-narrow and down-wide structure, therefore contact layer 2 and electrode layer 3 are a continuous entirety, but contact layer 2 contacts with base plate for packaging, in the time of unbalance stress, easily cause contact layer 2 that abrasion deformation occurs, now contact layer 2 and electrode layer 3 are a continuous entirety, inevitably can cause electrode layer 3 that deformation also can occur, the electrode layer 3 that deformation occurs is positioned at luminescence display region, therefore can affect normal display effect, reduce the Stability and dependability of organic light emitting display.
Summary of the invention
The object of this invention is to provide a kind of luminescence display backboard, organic light emitting display and preparation method thereof, so that when being positioned at contact layer on supporter wearing and tearing deformation occurring, do not affect the electrode layer of the organic light emitting display that is positioned at viewing area, thereby electrode layer can be because deformation occurs in the deformation of contact layer, thereby improve stability and the reliability of organic light emitting display.
The object of the invention is to be achieved through the following technical solutions:
On the one hand, a kind of luminescence display backboard is provided, comprise several organic light emitting displays that are formed on array base palte, and be arranged on the pixel defining layer between adjacent organic light emitting display, also comprise: 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 comprises support portion;
Described support portion with described array base palte place plane vertical direction on tangent plane be inverted trapezoidal, described inverted trapezoidal is that upper base length is greater than the length of going to the bottom, and go to the bottom and waist between angle to be obtuse angle trapezoidal.
Supporter in the luminescence display backboard providing in the embodiment of the present invention comprises support portion, and support portion with array base palte place plane vertical direction on tangent plane be inverted trapezoidal, this inverted trapezoidal is that upper base length is greater than the length of going to the bottom, and go to the bottom and waist between angle to be obtuse angle trapezoidal, therefore in the time carrying out same film-forming process formation metallic film, can make metallic film automatically disconnect in the edge of supporter, form respectively the electrode layer of organic light emitting display and be positioned at the contact layer on supporter, and then the electrode layer that makes contact layer and organic light emitting display is discrete structure, in the time there is wearing and tearing deformation in contact layer, do not affect the electrode layer of the organic light emitting display that is positioned at viewing area, thereby can not there is not deformation because of the deformation of contact layer in electrode layer, thereby stability and the reliability of organic light emitting display are improved.
Optionally, above support also comprises upper top, and described upper top and described support portion are integrally formed, is formed on described support portion, and has the contact area of setting with described support portion, and avoiding supporter is the easily destroyed defect of corner angle of acute angle.
Optionally, described upper top and described support portion as a whole, with described array base palte place plane vertical direction on tangent plane be described inverted trapezoidal shape, simplify manufacture craft.
Optionally, the part spheroid that is shaped as evagination of described upper top, described spheroid with described array base palte place plane parallel direction on tangent plane be circular, the diameter of described circle and the upper base of described inverted trapezoidal are equal in length, the angle that makes upper top is obtuse angle, destroys with the corner angle of avoiding supporter.
Optionally, described upper top with described array base palte place plane vertical direction on tangent plane be trapezoidal, the bottom that this is trapezoidal and the angle of waist are acute angle, and length is less than the upper base edge lengths of described inverted trapezoidal, can, in the situation that guaranteeing that corner angle are obtuse angle, increase the contact area of supporter and base plate for packaging.
Optionally, described upper top comprises Part I and Part II, and described Part II is formed on described Part I, wherein,
Described Part I with described array base palte place plane vertical direction on tangent plane be trapezoidal, the bottom that this is trapezoidal and the angle of waist are acute angle, and length is less than the upper base edge lengths of described inverted trapezoidal;
The part spheroid that is shaped as evagination of described Part II, described spheroid with described array base palte place plane parallel direction on tangent plane be circular, the diameter of described circle and described Part I with described array base palte place plane vertical direction on the trapezoidal upper base that is of tangent plane equal in length.
By said structure, further avoiding supporter is the destroyed defect of corner angle of acute angle.
Optionally, this luminescence display backboard, also comprise the contact layer that covers described upper top upper surface, described contact layer and described organic light emitting display arrange with layer near the electrode of described base plate for packaging one side, and there is identical material, do not changing under the condition of technique making, the electrode layer of realizing contact layer and organic light emitting display is discrete structure.
On the other hand, also provide a kind of organic light emitting display, comprise above-mentioned any one luminescence display backboard relating to.
Supporter in the luminescence display backboard of the organic light emitting display that the embodiment of the present invention provides comprises support portion and upper top, and support portion with array base palte place plane vertical direction on tangent plane be inverted trapezoidal, this inverted trapezoidal is that upper base length is greater than the length of going to the bottom, and go to the bottom and waist between angle to be obtuse angle trapezoidal, therefore in the time carrying out same film-forming process formation metallic film, can make metallic film automatically disconnect in the edge of supporter, form respectively the electrode layer of organic light emitting display and be positioned at the contact layer on supporter, and then the electrode layer that makes contact layer and organic light emitting display is discrete structure, in the time there is wearing and tearing deformation in contact layer, do not affect the electrode layer of the organic light emitting display that is positioned at viewing area, thereby can not there is not deformation because of the deformation of contact layer in electrode layer, thereby stability and the reliability of organic light emitting display are improved.
Again on the one hand, also provide a kind of manufacture method of organic light emitting display, comprise and form the first electrode layer of organic light emitting display and the step of pixel defining layer, also comprise:
On described pixel defining layer, form the some supporters that comprise support portion, wherein, described support portion with described array base palte place plane vertical direction on tangent plane be inverted trapezoidal, described inverted trapezoidal is that upper base length is greater than the length of going to the bottom, and go to the bottom and waist between angle to be obtuse angle trapezoidal;
Form metallic film by same film-forming process, described metallic film is at above support marginal portion natural fracture, and post-rift metallic film forms respectively the second electrode lay of organic light emitting display and covers the contact layer of above support upper top upper surface.
The manufacture method of the organic light emitting display that the embodiment of the present invention provides, the supporter of making comprises support portion, and support portion with array base palte place plane vertical direction on tangent plane be inverted trapezoidal, this inverted trapezoidal is that upper base length is greater than the length of going to the bottom, and go to the bottom and waist between angle to be obtuse angle trapezoidal, therefore in the time carrying out same film-forming process formation metallic film, can make metallic film automatically disconnect in the edge of supporter, form respectively the electrode layer of organic light emitting display and be positioned at the contact layer on supporter, and then the electrode layer that makes contact layer and organic light emitting display is discrete structure, in the time there is wearing and tearing deformation in contact layer, do not affect the electrode layer of the organic light emitting display that is positioned at viewing area, thereby can not there is not deformation because of the deformation of contact layer in electrode layer, thereby stability and the reliability of organic light emitting display are improved.
Optionally, the described some supporters that comprise support portion that form on pixel defining layer, specifically comprise:
In described pixel defining layer, form the some supporters that comprise support portion and upper top, described upper top is formed on described support portion, and there is the contact area of setting, the destroyed defect of corner angle that the support portion of avoiding inverted trapezoidal is acute angle with described support portion.
Accompanying drawing explanation
Figure 1A and Figure 1B are the sectional structure chart of existing organic light emitting display;
The sectional structure chart of the luminescence display backboard that Fig. 2 A and Fig. 2 B provide for the embodiment of the present invention;
The sectional structure chart of the supporter that Fig. 3 provides for the embodiment of the present invention;
The another sectional structure chart of the supporter that Fig. 4 provides for the embodiment of the present invention;
A sectional structure chart again of the supporter that Fig. 5 provides for the embodiment of the present invention;
The cross-sectional view of the organic light emitting display that Fig. 6 A-Fig. 6 D provides for the embodiment of the present invention;
The making flow chart of the organic light emitting display that Fig. 7 provides for the embodiment of the present invention;
The manufacturing process schematic diagram of the organic light emitting display that Fig. 8 A-Fig. 8 G provides for the embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, is not whole embodiment.Based on the embodiment in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
The embodiment of the present invention provides a kind of luminescence display backboard, as shown in Figure 2 A, comprise several organic light emitting displays 200 that are formed on array base palte 100, and be arranged on the pixel defining layer 300 between adjacent organic light emitting display, also comprise the supporter 400 being formed on pixel defining layer 300, wherein supporter 400 comprises support portion 401, support portion 401 with array base palte 100 place plane vertical direction on tangent plane be inverted trapezoidal, the upper base length of inverted trapezoidal is greater than the length of going to the bottom, and go to the bottom and waist between angle be obtuse angle.
In the embodiment of the present invention, supporter 400 also comprises upper top 402, as shown in Figure 2 B, upper top 402 is formed on support portion 401, and there is the contact area of setting with support portion 401, the contact area of this setting can be set according to actual conditions, can be set as the upper end face that upper top covers support portion completely, also can cover end face in the part of support portion.
In the embodiment of the present invention, luminescence display backboard also comprises the contact layer 501 that covers upper top 402 upper surfaces, and this contact layer 501 arranges with layer near the electrode of base plate for packaging one side with organic light emitting display 200, and has identical material.
As shown in Figure 2 A, inverted trapezoidal go to the bottom and waist between angle be obtuse angle, inverted trapezoidal and array base palte another angle α be in the plane acute angle, and then make follow-up while carrying out film-forming process, can make metallic film be fractured into two parts along the edge of supporter, a part that wherein covers the organic function layer of organic light emitting display can be used as the electrode layer 201 of organic light emitting display, another part that covers upper top 402 upper surfaces is as contact layer 501, can not change under the prerequisite of existing film-forming process, form contact layer 501 and the discrete structure of electrode layer 201, technique is simple.
Pass through the embodiment of the present invention, contact layer 501 and electrode layer 201 are two parts by same metallic film at the edge natural fracture along supporter 400, making contact layer 501 and electrode layer 201 is discrete two parts, in the time there is wearing and tearing deformation in contact layer, do not affect the electrode layer of the organic light emitting display that is positioned at viewing area, thereby electrode layer can be because deformation occurs in the deformation of contact layer, thereby stability and the reliability of organic light emitting display are improved.
In the embodiment of the present invention, the shape of supporter can be various ways, as long as guarantee that in the luminescence display backboard shown in Fig. 2 A, the angle α between the side of supporter 400 and array base palte 100 place planes is acute angle.
Optionally, in the embodiment of the present invention, for simplifying manufacture craft, the support portion of supporter 400 401 and upper top 402 can be integrally formed, upper top 402 is the regular shape that is integrally formed with support portion 401 or irregularly shaped.The regular shape relating in the embodiment of the present invention can be such as regular polygonal shape such as trapezoidal grade, and irregularly shaped can be for example for surface is for being rough curve form.
Optionally, in the embodiment of the present invention, can be integrally formed supporter 400, supporter 400 with array base palte 100 place plane vertical direction on tangent plane be inverted trapezoidal shape, be upper top 402 and support portion 401 as a whole, with array base palte 100 place plane vertical direction on tangent plane be inverted trapezoidal, can again consult shown in Fig. 2 A.
Support structure shown in embodiment of the present invention Fig. 2 A, inverted trapezoidal go to the bottom and waist between angle be obtuse angle, guarantee that the angle α between supporter 400 and array base palte 100 place planes is acute angle, now the angle β between upper base and the waist of inverted trapezoidal is acute angle, is mainly used in the organic light emitting display that plane shows.
The structure of another kind of supporter 400 is provided in the embodiment of the present invention, as shown in Figure 3, the part spheroid that is shaped as evagination of the upper top 402 in this supporter 400, this spheroid with array base palte 100 place plane vertical direction on tangent plane be arc, and then the luminescence display backboard that makes to have this support structure can be applied to the organic light emitting display that curved surface shows.
Further, angle β between upper base and the waist of inverted trapezoidal is acute angle, β is easily destroyed the coming off of corner angle of acute angle, the corner angle that come off are easy to drop in viewing area, and then the normal demonstration of impact, the part spheroid that is shaped as evagination of the upper top 402 of supporter 400 in the embodiment of the present invention, this spheroid with array base palte 100 place plane parallel directions on tangent plane be circular, the upper base length loudness of the diameter that this is circular and the inverted trapezoidal of support portion, making β is obtuse angle, and then can to avoid supporter be the easily destroyed defect of corner angle of acute angle.
Further, the structure of another kind of supporter 400 is provided in the embodiment of the present invention, as shown in Figure 4, in the structure of the supporter 400 shown in Fig. 4, the tangent plane figure of support portion 401 is still inverted trapezoidal, upper top 402 with array base palte 100 place plane vertical direction on tangent plane figure be trapezoidal, the bottom that this is trapezoidal and the angle of waist are acute angle, the angle of upper base and waist is obtuse angle, and the bottom length of shape is less than the upper base edge lengths of the inverted trapezoidal of support portion 401 tangent plane figure in the same direction.By the support structure shown in Fig. 4, can avoid supporter is the easily destroyed defect of corner angle of acute angle, and the tangent plane figure of upper top 402 is trapezium structure, can, in the situation that guaranteeing that corner angle are obtuse angle, increase the contact area of supporter and base plate for packaging.
Figure 5 shows that another structural representation of the supporter 400 that the embodiment of the present invention provides.In Fig. 5, the tangent plane figure of support portion 401 is still inverted trapezoidal, upper top 402 comprises Part I 4021 and Part II 4022, Part II 4022 is formed on Part I 4021, wherein, Part I 4021 with array base palte 100 place plane vertical direction on tangent plane be trapezoidal, the bottom that this is trapezoidal and the angle of waist are acute angle, and length is less than the upper base edge lengths of the inverted trapezoidal of the tangent plane figure of support portion 401 in same direction.The part spheroid that is shaped as evagination of Part II 4022, this spheroid with array base palte 100 place plane vertical direction on tangent plane be arc, this spheroid with array base palte 100 place plane parallel directions on tangent plane be circular, circular diameter and Part I 4021 with array base palte 100 place plane vertical direction on the trapezoidal upper base that is of tangent plane equal in length.
By the support structure shown in Fig. 5, can further avoid supporter is the destroyed defect of corner angle of acute angle.
Supporter in the luminescence display backboard that the embodiment of the present invention provides comprises support portion and upper top, and support portion with array base palte place plane vertical direction on tangent plane be inverted trapezoidal, this inverted trapezoidal is that upper base length is greater than the length of going to the bottom, and go to the bottom and waist between angle to be obtuse angle trapezoidal, therefore in the time carrying out same film-forming process formation metallic film, can make metallic film automatically disconnect in the edge of supporter, form respectively the electrode layer of organic light emitting display and be positioned at the contact layer on supporter, and then the electrode layer that makes contact layer and organic light emitting display is discrete structure, in the time there is wearing and tearing deformation in contact layer, do not affect the electrode layer of the organic light emitting display that is positioned at viewing area, thereby can not there is not deformation because of the deformation of contact layer in electrode layer, thereby stability and the reliability of organic light emitting display are improved.
In another embodiment of the present invention, provide a kind of organic light emitting display, this active display comprises the above-mentioned luminescence display backboard relating to, and the base plate for packaging being oppositely arranged with this demonstration backboard.
Support structure in the luminescence display backboard that the embodiment of the present invention relates to has any one support structure that above-described embodiment relates to, and has the cross-sectional view of organic light emitting display of above-mentioned different support structures as shown in Fig. 6 A-6D.
In the embodiment of the present invention, in the luminescence display backboard of organic light emitting display, supporter comprises support portion and upper top, and support portion with array base palte place plane vertical direction on tangent plane be inverted trapezoidal, this inverted trapezoidal is that upper base length is greater than the length of going to the bottom, and go to the bottom and waist between angle to be obtuse angle trapezoidal, therefore in the time carrying out same film-forming process formation metallic film, can make metallic film automatically disconnect in the edge of supporter, form respectively the electrode layer of organic light emitting display and be positioned at the contact layer on supporter, and then the electrode layer that makes contact layer and organic light emitting display is discrete structure, in the time there is wearing and tearing deformation in contact layer, do not affect the electrode layer of the organic light emitting display that is positioned at viewing area, thereby can not there is not deformation because of the deformation of contact layer in electrode layer, thereby stability and the reliability of organic light emitting display are improved.
An embodiment more of the present invention also provides a kind of manufacture method of organic light emitting display, as shown in Figure 7, comprising:
S701: form array base palte 100.
In the embodiment of the present invention, can on underlay substrate 101, make sandwich construction 102 and form array base palte 100, as shown in Figure 8 A.Wherein, underlay substrate 101 can be including, but not limited to glass substrate.Sandwich construction 102 comprises grid, gate insulation layer, have chance with layer and source-drain electrode etc.
S702: the first electrode layer 202 that forms organic light emitting display 200.
Concrete, in the embodiment of the present invention, the first electrode layer 202 is formed on passivation layer 210, in the embodiment of the present invention, can adopt for example sputtering technology to form and there is the passivation layer 210 of setting thickness, on passivation layer 210, wet etching is formed with through hole, then adopt for example sputtering technology to form the conductive film of setting thickness, and the pattern of wet etching formation rule, form the first electrode layer 202 of organic light emitting display 200, the first electrode layer 202 of organic light emitting display 200 is connected with source electrode or drain electrode in sandwich construction 102 by through hole, as shown in Figure 8 B.
S703: form pixel defining layer 300.
Concrete, the embodiment of the present invention can adopt the techniques such as such as spin coating, the organic material (for example polyimides) of insulation is spin-coated between the first adjacent electrode layer 202, and cover part the first electrode layer 202, as shown in Figure 8 C.The thickness of pixel defining layer 300 is generally 1 micron of left and right.
S704: form the some supporters 400 that comprise support portion 401 and upper top in pixel defining layer 300.
Concrete, in the embodiment of the present invention, employing has good pattern and forms the negative photoresist of ability, strong mechanical characteristic, high thermal expansion coefficient and stable electrology characteristic, solidifies and the structure of the processing step formation supporter 400 such as heat bakings by spin coating, exposure, post bake, development, development are main.
In the embodiment of the present invention by regulating its post bake (temperature: 120 ° and 150 seconds time), exposure dose (20mj/cm2) and development intensity (solution level: 0.36% and walking speed: 1.2 ms/min) to carry out the making of supporter 400, the support portion 401 that makes supporter 400 with array base palte 100 place plane vertical direction on tangent plane be inverted trapezoidal, inverted trapezoidal is that upper base length is greater than the length of going to the bottom, and go to the bottom and waist between angle to be obtuse angle trapezoidal; Upper top 402 is formed on support portion 401, and has the contact area of setting with support portion 401, as shown in Fig. 8 D.
Concrete, can be according to actual needs in the embodiment of the present invention, adopt different masking process, making support portion 401 is circle, square or rectangle etc. with the bottom pattern contacting of pixel defining layer 300, the top pattern figure that upper top 402 contacts with base plate for packaging also can be corresponding circle, square or rectangle etc., in the embodiment of the present invention, for the tangent plane figure of support portion that makes supporter is inverted trapezoidal, area that generally need to top pattern is set to be less than the area of bottom pattern.
Optionally, in the embodiment of the present invention, optimize the structure of supporter 400 and simplify technique for further, can be on pixel defining layer 300, be integrally formed support portion 401 and the upper top 402 of supporter 400, upper top 402 and support portion 401 as a whole, with array base palte 100 place plane vertical direction on tangent plane be inverted trapezoidal shape.
Further, in the embodiment of the present invention, can to upper top 402 carry out first dry quarter cineration technics, make the part spheroid that is shaped as evagination of upper top 402, spheroid with array base palte 100 place plane parallel directions on tangent plane be circular, circular diameter and support portion 401 with array base palte 100 place plane vertical direction on the upper base of the inverted trapezoidal that is of tangent plane equal in length so that the upper top corner angle of supporter are obtuse angle.
Further, in the embodiment of the present invention, also can to upper top 402 carry out second dry quarter cineration technics, make upper top 402 with array base palte 100 place plane vertical direction on tangent plane be trapezoidal, the bottom that this is trapezoidal and the angle of waist are acute angle, and length is less than the upper base edge lengths of described inverted trapezoidal, can, in the situation that guaranteeing that corner angle are obtuse angle, increase the contact area of supporter and base plate for packaging.
Preferably, in the embodiment of the present invention, also can form in the following way supporter 400:
On pixel defining layer 300, form support portion 401.
On support portion 401, form the Part I 4021 of upper top, Part I 4021 with array base palte 100 place plane vertical direction on tangent plane be trapezoidal, the bottom that this is trapezoidal and the angle of waist are acute angle, and length is less than the upper base edge lengths of the inverted trapezoidal of the tangent plane figure of support portion 401.
On Part I 4021, form the Part II 4022 of upper top, the part spheroid that is shaped as evagination of Part II 4022, this spheroid with array base palte 100 place plane parallel directions on tangent plane be circular, circular diameter and Part I 4021 with array base palte 100 place plane vertical direction on the trapezoidal upper base that is of tangent plane equal in length.
S705: form the organic function layer 203 of organic light emitting display 200, as shown in Fig. 8 E.
Concrete, in the embodiment of the present invention, the organic function layer of organic light emitting display 200 includes but not limited to hole injection layer, hole transmission layer, luminescent layer, electron transfer layer, electron injecting layer etc.
S706: form metallic film by same film-forming process, metallic film is at supporter 400 marginal portion natural fractures, post-rift metallic film forms respectively the second electrode lay 401 of organic light emitting display and covers the contact layer of supporter 400 upper top 402 upper surfaces, as shown in Figure 8 F.
S707: encapsulation base plate for packaging, forms organic light emitting display.
Concrete, in the embodiment of the present invention, complete after the making of luminescence display backboard of organic light emitting display, base plate for packaging 600 can be packaged together by sealed plastic box, form organic light emitting display, as shown in Fig. 8 G.
Certainly, the embodiment of the present invention, according to the different structure of supporter in S704, can form for example structure of the organic light emitting display shown in Fig. 6 A-Fig. 6 B.
In the embodiment of the present invention, in the luminescence display backboard of organic light emitting display, supporter comprises support portion and upper top, and support portion with array base palte place plane vertical direction on tangent plane be inverted trapezoidal, this inverted trapezoidal is that upper base length is greater than the length of going to the bottom, and go to the bottom and waist between angle to be obtuse angle trapezoidal, therefore in the time carrying out same film-forming process formation metallic film, can make metallic film automatically disconnect in the edge of supporter, form respectively the electrode layer of organic light emitting display and be positioned at the contact layer on supporter, and then the electrode layer that makes contact layer and organic light emitting display is discrete structure, in the time there is wearing and tearing deformation in contact layer, do not affect the electrode layer of the organic light emitting display that is positioned at viewing area, thereby can not there is not deformation because of the deformation of contact layer in electrode layer, thereby stability and the reliability of organic light emitting display are improved.
Obviously, those skilled in the art can carry out various changes and modification and not depart from the spirit and scope of the present invention the present invention.Like this, if within of the present invention these are revised and modification belongs to the scope of the claims in the present invention and equivalent technologies thereof, the present invention is also intended to comprise these changes and modification interior.
Claims (9)
1. a luminescence display backboard, comprise several organic light emitting displays that are formed on array base palte, and be arranged on the pixel defining layer between adjacent organic light emitting display, it is characterized in that, also comprise: 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 comprises support portion;
Described support portion with described array base palte place plane vertical direction on tangent plane be inverted trapezoidal, described inverted trapezoidal is that upper base length is greater than the length of going to the bottom, and go to the bottom and waist between angle to be obtuse angle trapezoidal.
2. luminescence display backboard as claimed in claim 1, is characterized in that, above support also comprises upper top, and described upper top and described support portion are integrally formed, is formed on described support portion, and has the contact area of setting with described support portion.
3. luminescence display backboard as claimed in claim 2, is characterized in that, described upper top and described support portion as a whole, with described array base palte place plane vertical direction on tangent plane be described inverted trapezoidal shape.
4. luminescence display backboard as claimed in claim 2, it is characterized in that, the part spheroid that is shaped as evagination of described upper top, described spheroid with described array base palte place plane parallel direction on tangent plane be circular, the diameter of described circle and the upper base of described inverted trapezoidal are equal in length.
5. luminescence display backboard as claimed in claim 2, it is characterized in that, described upper top with described array base palte place plane vertical direction on tangent plane be trapezoidal, the bottom that this is trapezoidal and the angle of waist are acute angle, and length is less than the upper base edge lengths of described inverted trapezoidal.
6. luminescence display backboard as claimed in claim 2, is characterized in that, described upper top comprises Part I and Part II, and described Part II is formed on described Part I, wherein,
Described Part I with described array base palte place plane vertical direction on tangent plane be trapezoidal, the bottom that this is trapezoidal and the angle of waist are acute angle, and length is less than the upper base edge lengths of described inverted trapezoidal;
The part spheroid that is shaped as evagination of described Part II, described spheroid with described array base palte place plane parallel direction on tangent plane be circular, the diameter of described circle and described Part I with described array base palte place plane vertical direction on the trapezoidal upper base that is of tangent plane equal in length.
7. an organic light emitting display, is characterized in that, comprises the luminescence display backboard described in claim 1-6 any one.
8. a manufacture method for organic light emitting display, comprises and forms the first electrode layer of organic light emitting display and the step of pixel defining layer, it is characterized in that, also comprises:
On pixel defining layer, form the some supporters that comprise support portion, wherein, described support portion with described array base palte place plane vertical direction on tangent plane be inverted trapezoidal, described inverted trapezoidal is that upper base length is greater than the length of going to the bottom, and go to the bottom and waist between angle to be obtuse angle trapezoidal;
Comprising on the described pixel defining layer of above support, by same film-forming process covering metal film, described metallic film is at above support marginal portion natural fracture, and post-rift metallic film forms respectively the second electrode lay of organic light emitting display and covers the contact layer of above support upper top upper surface.
9. method as claimed in claim 8, is characterized in that, the described some supporters that comprise support portion that form on pixel defining layer, specifically comprise:
In described pixel defining layer, form and comprise some supporters of support portion and upper top, described upper top is formed on described support portion, and has the contact area of setting with described support portion.
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| CN201410042653.6A CN103794634B (en) | 2014-01-29 | 2014-01-29 | Luminescence display backboard, OLED and preparation method thereof |
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