CN103681482A - An OLED display device and a packaging method thereof - Google Patents
An OLED display device and a packaging method thereof Download PDFInfo
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- CN103681482A CN103681482A CN201210361972.4A CN201210361972A CN103681482A CN 103681482 A CN103681482 A CN 103681482A CN 201210361972 A CN201210361972 A CN 201210361972A CN 103681482 A CN103681482 A CN 103681482A
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- transparency carrier
- pillar
- row
- oled display
- base palte
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass
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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
- H10K50/8428—Vertical spacers, e.g. arranged between the sealing arrangement and the OLED
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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
Abstract
The invention provides a packaging method of an OLED display device. The packaging method comprises steps of: forming a pixel array on an array substrate; providing a transparent substrate and coating the transparent substrate with glass powders; pasting the array substrate and the transparent substrate with the glass powders, wherein the step of providing the transparent substrate also comprises forming photo spacers on the transparent substrate. The invention also provides an OLED display device comprising an array substrate, a transparent substrate arranged opposite to the array substrate, multiple photo spacers used for resisting compression and keeping box thickness and arranged between the array substrate and the transparent substrate, wherein the photo spacers are formed on the transparent substrate and uses same material with that of the transparent substrate. While guaranteeing a certain anti- compression ability of the transparent substrate, the packaging method prevents color mixture caused by overhigh PSs or a phenomenon of Newton rings caused by overlow PSs, and an adverse influence on the service life of the OLED display device caused by the material of the PS itself.
Description
Technical field
The present invention relates to organic light emitting display field, particularly a kind of OLED(Organic Light Emitting Diode) display device and method for packing thereof.
Background technology
In recent years, Organic Light Emitting Diode OLED display device is more and more general, the most remarkable in the products such as mobile phone, media player and small-sized entry level TV.The liquid crystal display device that is different from standard, OLED pixel is driven by current source.Because OLED is self-luminescent material, do not need to use backlight, meet the development trend of compactization of display device; Aspect demonstration, its active illuminating, angular field of view are large, have image quality even, image stabilization, the advantage of fast response time; Aspect driving, its driving voltage is low, energy consumption is low, with simple drive circuit can reach luminous, processing procedure is simple; Add that it has that brightness is high, rich color, feature that resolution is high, OLED display device is by the new lover who is following demonstration field.
In the manufacture process of OLED display device, first respectively manufacturing array substrate and transparency carrier conventionally, then by being coated in two substrates of glass dust laminating on transparency carrier, also box.In order to make transparency carrier have certain anti-pressure ability, prior art will be made a plurality of PS(photo spacer, pillar conventionally on array base palte), described PS has also played the thick effect of box that keeps simultaneously.In order to ensure PS, support transparency carrier, PS need accomplish certain altitude.But if PS does too highly, follow-up, while carrying out organic material evaporation, organic material is easily splashed in adjacent pixel regions, causes these regions to occur shade, thereby causes colour mixture; But if PS does too lowly, there will be because PS insufficient height cannot play the effect of supporting transparency carrier, thereby produce Newton's ring.In addition, because PS is used organic material, make, after high-temperature heating, can produce air release steam, so just affected the life-span of OLED device.
Summary of the invention
The technical problem that the present invention solves is to state in realization with PS to come supporting case thick, when making transparency carrier there is certain anti-pressure ability, avoided doing to obtain the too high colour mixture problem causing because of PS, or because PS does to obtain the too low Newton's ring phenomenon of bringing, and due to the harmful effect problem of the material properties of PS to the life-span generation of OLED device own.
For addressing the above problem, the invention provides a kind of OLED display device and method for packing thereof, the outstanding feature of this display device is to form PS by transparency carrier itself, is also that transparency carrier and PS are one, comprises particularly:
A method for packing for OLED display device, comprising:
On array base palte, form pel array;
Transparency carrier is provided, and on described transparency carrier coated glass powder;
By described glass dust fit described array base palte and transparency carrier;
It is characterized in that,
In the step of described transparency carrier is provided, be also included in and on transparency carrier, form pillar.
Further, the described step that forms pillar on transparency carrier comprises:
On described transparency carrier, apply photoresist;
By exposure, develop, photoresist described in patterning;
Transparency carrier described in etching;
Peel off described photoresist, form described pillar.
Further, described etching is wet etching, and the solution of etching is hydrofluoric acid.
Further, described pillar is that cross section is circular or polygonal prism.
Further, the height of described pillar is more than or equal to 1.5um and is less than or equal to 2.5um.
Further, described transparency carrier corresponding to described array base palte in the interval region of every adjacent two row pixels, the interval region of every adjacent two row pixels, forms described pillar.
Further, described transparency carrier corresponding to described array base palte in the interval region of every adjacent two row pixels, the interval region at interval of two row or three row or four row or five row pixels, forms described pillar.
Further, described transparency carrier corresponding to described array base palte in the interval region of every adjacent two row pixels, the interval region at interval of two row or three row or four lines or five-element's pixel, forms described pillar.
Further, by screen printing technique coated glass powder on described transparency carrier.
Further, after the step of coated glass powder, also comprise the described glass dust of baking, described glass dust is solidified.
Further, the temperature of described baking is for higher than equaling 350 ℃ and lower than equaling 450 ℃.
The present invention also provides a kind of OLED display device, comprising:
Array base palte;
The transparency carrier being oppositely arranged with described array base palte;
Between described array base palte and transparency carrier, be provided with a plurality ofly for resistance to compression and keep the pillar that box is thick, described support column type is formed on described transparency carrier, identical with the material of described transparency carrier.
Further, the material of described pillar is one or more in glass, plastics, organic material.
Further, described pillar is cylindrical columns, and its cross section is circular.
Further, the radius of described circle is more than or equal to 2um and is less than or equal to 7um.
Further, described pillar is prism, and its cross section is polygon.
Further, described polygon is rectangle.
Further, described polygon is square.
Further, the described foursquare length of side is more than or equal to 4um and is less than or equal to 14um.
Further, the cross section of described pillar is ellipse or irregular figure.
Further, the height of described pillar is more than or equal to 1.5um and is less than or equal to 2.5um.
Further, described transparency carrier corresponding to described array base palte in the interval region of every adjacent two row pixels, the interval region of every adjacent two row pixels, forms described pillar.
Further, described transparency carrier corresponding to described array base palte in the interval region of every adjacent two row pixels, the interval region at interval of two row or three row or four row or five row pixels, forms described pillar.
Further, described transparency carrier corresponding to described array base palte in the interval region of every adjacent two row pixels, the interval region at interval of two row or three row or four lines or five-element's pixel, forms described pillar.
With respect to prior art, the present invention has the following advantages:
1. by transparency carrier itself, form PS, because PS is used organic material, do not make, the bad of release gas that be heated that has therefore avoided use organic material there will be, thereby the life-span that has strengthened OLED device, use amount and the expense of having saved organic material simultaneously;
2. the technical scheme that forms PS on transparency carrier that the present invention adopts, can effectively avoid adopting traditional PS production method, while making after PS evaporation organic material on array base palte, in adjacent pixel regions, produce shade, effectively prevented because of the formed colour mixture of organic material shade, thus the yield of improving product;
3. the technical scheme that forms PS on transparency carrier that the present invention adopts, can reach the object that PS supports transparency carrier, and prevent Newton's ring.
Accompanying drawing explanation
Fig. 1 to Fig. 6 is the process chart of the embodiment of the present invention five;
Fig. 7 is the schematic diagram of the embodiment of the present invention two;
Fig. 8 to Figure 11 is the schematic diagram of the embodiment of the present invention three;
Figure 12 to Figure 15 is the schematic diagram of the embodiment of the present invention four.
Embodiment
For above-mentioned purpose of the present invention, feature and advantage can be become apparent more, below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail.
Set forth in the following description a lot of details so that fully understand the present invention, but the present invention can also adopt other to be different from alternate manner described here, implement, so the present invention has not been subject to the restriction of following public specific embodiment.
Embodiment mono-
The invention provides a kind of OLED display device, for clearer explanation the present invention, only show the structure of a pixel region in the present embodiment, this should not be construed as limitation of the present invention.
Please refer to Fig. 6, this OLED display device comprises: array base palte 1, the transparency carrier 3 being oppositely arranged with array base palte 1, on array base palte 1, be formed with pel array 2, between array base palte 1 and transparency carrier 3, have a plurality of for resistance to compression and keep the pillar 5 that box is thick, pillar 5 is formed on transparency carrier 3, with transparency carrier 3 are one, so the material of pillar 5 is identical with the material of transparency carrier 3.Array base palte 1 is fitted into box with transparency carrier 3 by glass dust 6.
Due to the material of transparency carrier 3 so long as transparent, can be used for supporting, can select according to different needs be one or more in glass, plastics, organic material, so the material of pillar 5 can be correspondingly also one or more in glass, plastics, organic material.
In another embodiment, pillar 5 is prisms, and its cross section is polygon, for example the polygon of trapezoidal, triangle, rectangle or other sealings.Preferably, the cross section of pillar 5 is regular polygons, such as equilateral triangle, square (comprising square or parallelogram or rhombus), regular pentagon etc.
Preferably, when pillar 5 is prisms, when its cross section is square, in order to obtain better OLED display effect, the foursquare length of side is preferably more than and equals 4um and be less than or equal to 14um.
Certainly, pillar 5 can be also common prism, is also that its cross section can be ellipse, irregular figure or other figures, and this can design according to the requirement of specific product.Kind variation based on figure, does not enumerate at this.
In addition, in the situation that process conditions allow, pillar 5 can be also terrace with edge, and the change of shape of the cross section of terrace with edge, as the figure of above summarizing and enumerating, no longer repeats at this.
Further, in order to obtain better OLED display effect, being preferably greater than of pillar 5 of the present invention equals 1.5um and is less than or equal to 2.5um.
Embodiment bis-
The present embodiment is further to obtain on the basis of embodiment mono-.As shown in Figure 7, consult Fig. 6, for example, in the interval region (L1 or L2) of transparency carrier 3 corresponding to every adjacent two row pixels on array base palte 1, the interval region (for example R1 or R2) of every adjacent two row pixels, forms described pillar 5 simultaneously.Also at the place, intersection region of the interval region of adjacent two row pixels and the interval region of adjacent two row pixels, form described pillar 5.
Arrange like this that supporting case is thick better, be conducive to transparency carrier 3 and keep certain anti-pressure ability.It should be noted that, for explanatorily clearer, in the present embodiment, only with cylindrical columns 5, give an example, be intended to show the position of its formation.Those skilled in the art are known, and pillar 5 can be also pillar described in above-mentioned any one embodiment, therefore should not form limitation of the present invention with this.Below also same.
Embodiment tri-
The present embodiment is a kind of variation example of embodiment bis-.As shown in Figs. 8 to 11, consult Fig. 6 simultaneously, in for example, interval region corresponding to every adjacent two row (L1 or L2) pixel on array base palte 1 of transparency carrier 3, for example, for example, for example, for example, interval region at interval of two row (R3, R4, R5) or three row (R6, R7) or four row (R8, R9) or five row (R10, R11) pixels, forms described pillar 5.
The present embodiment, guaranteeing that transparency carrier 3 has on the basis of certain anti-pressure ability, has reduced the quantity of pillar 5 on pixel region line direction.
Embodiment tetra-
The present embodiment is that the another kind of embodiment bis-changes example.As shown in Figure 12 to Figure 15, consult Fig. 6 simultaneously, transparency carrier 3 corresponding to array base palte 1 on for example, in the interval region of every adjacent two row (R1 or R2) pixels, for example, for example, for example, for example, interval region at interval of two row (L3, L4, L5) or three row (L6, L7) or four lines (L8, L9) or the five-element (L10, L11) pixel, forms described pillar 5.
The present embodiment, guaranteeing that transparency carrier 3 has on the basis of certain anti-pressure ability, has reduced the quantity of pillar 5 on pixel region column direction.
Embodiment five
The present invention also provides a kind of method for packing of OLED display device.Refer to Fig. 1.First, provide array basal plate 1, and form pel array 2 on array base palte 1.For precise and to the point, in the present embodiment, the concrete structure of pel array 2 is not launched, this should not form limitation of the present invention.Known to those skilled in the art, the material of the array base palte here for example, so long as can passive transparency carrier, one or more in glass, plastics, organic material.
Secondly, provide a transparency carrier 3, as shown in Figure 2, preferably, the thickness of transparency carrier 3 is 0.5mm, and on the surface of transparency carrier 3, applies one deck photoresist 4.Further, by the step of exposure, development, patterning photoresist 4, as shown in Figure 3.It should be noted that, the photoresist 4 here can be both positive photoresist, can be also negative photoresist, can pass through to adopt corresponding mask(light shield), control light throughput and form structure as shown in Figure 3.Then, etching transparency carrier 3.Preferably, etching is wet etching, and the solution of etching can be hydrofluoric acid.Finally, stripping photoresist, the pillar 5 of formation and transparency carrier 3 one, as shown in Figure 4.
Form pillar 5 on transparency carrier 3 after, coated glass powder 6 on transparency carrier 3, as shown in Figure 5.
Finally, with laser, beat and swash glass dust 6, laminating array base palte 1 and transparency carrier 3, as shown in Figure 6.On array base palte 1, be formed with pel array 2, on transparency carrier 3, have pillar 5 integrated with it.
It should be noted that, in the present embodiment, any attributes such as the shape of pillar 5 itself, size, position are not made to restriction, the shape in accompanying drawing, size, only with helping to understand method described in the present embodiment, should not usingd this as the restriction to the present embodiment yet.
Embodiment six
The present embodiment is further to obtain on the basis of embodiment five.
Particularly, adopt the process of embodiment five, further making the cross section of pillar is circle or polygon, or forms disclosed pillar in above-mentioned any one embodiment.
In like manner, adopt the process of embodiment five, make the height of pillar be more than or equal to 1.5um and be less than or equal to 2.5um.
Similarly, adopt the process of embodiment five, transparency carrier corresponding to array base palte in the interval region of every adjacent two row pixels, the interval region of every adjacent two row pixels, forms pillar 5, simultaneously with reference to Fig. 7.
Similarly, adopt the process of embodiment five, transparency carrier corresponding to array base palte in the interval region of every adjacent two row pixels, at interval of the interval region of two row or three row or four row or five row pixels, form pillar 5, simultaneously with reference to Fig. 8 to Figure 11.
Similarly, adopt the process of embodiment five, transparency carrier corresponding to array base palte in the interval region of every adjacent two row pixels, at interval of the interval region of two row or three row or four lines or five-element's pixel, form pillar 5, simultaneously with reference to Figure 12 to Figure 15.
Preferably, can be by screen printing technique coated glass powder on transparency carrier.
Embodiment seven
The present embodiment is further to obtain on the basis of embodiment five.Difference between the present embodiment and embodiment five is, in the present embodiment, also comprises the described glass dust of baking after the step of coated glass powder, makes the curing step of described glass dust.Preferably, the temperature of baking is for higher than equaling 350 ℃ and lower than equaling 450 ℃.
The method of the present embodiment, can make resulting glass dust structural behaviour more stable, is more conducive to fit transparency carrier and array base palte.
It should be noted that, process of the present invention can be used in the stage before large substrates cutting in manufacturing process.A large array base palte is also first provided, and forms pel array on large array base palte; Then one large transparency carrier is provided, on large transparency carrier, according to above-mentioned technique, forms described in above any one embodiment after pillar relevant position coated glass powder on described large transparency carrier; Again, by described glass dust fit large array base palte and large transparency carrier, also box; Finally, cutting has become large array base palte and the large transparency carrier of box, makes them be cut into suitable for the conventional specification product of use.
The present invention also can be used in the stage after large substrates cutting.A large array base palte is also first provided, and forms pel array on large array base palte; Then one large transparency carrier is provided, and according to above-mentioned technique, forms pillar described in above any one embodiment on large transparency carrier; Subsequently, respectively large array base palte and large transparency carrier are cut into little array base palte and little transparency carrier, make them meet the specification that is suitable for use; Last corresponding position coated glass powder on the little transparency carrier of each piece, and by described glass dust fit little array base palte and little transparency carrier, also box.
To sum up, the invention provides a kind of OLED display device and method for packing thereof, this display device forms pillar PS by transparency carrier itself, is also that transparency carrier and pillar PS are one.When the present invention makes transparency carrier keep certain anti-pressure ability, while having avoided in prior art, PS being made on array base palte, because PS does to obtain the too high colour mixture problem causing, or because PS does to obtain the too low Newton's ring phenomenon of bringing, and due to the harmful effect of the material properties of PS to the life-span generation of OLED device own.
It should be noted that, above embodiment can use for reference mutually, Integrated using.Although the present invention with preferred embodiment openly as above; but it is not for limiting the present invention; any those skilled in the art without departing from the spirit and scope of the present invention; can utilize method and the technology contents of above-mentioned announcement to make possible change and modification to technical solution of the present invention; therefore; every content that does not depart from technical solution of the present invention; any simple modification, equivalent variations and the modification above embodiment done according to technical spirit of the present invention, all belong to the protection range of technical solution of the present invention.
Claims (24)
1. a method for packing for OLED display device, comprising:
On array base palte, form pel array;
Transparency carrier is provided, and on described transparency carrier coated glass powder;
By described glass dust fit described array base palte and transparency carrier;
It is characterized in that,
In the step of described transparency carrier is provided, be also included in and on transparency carrier, form pillar.
2. method for packing as claimed in claim 1, is characterized in that, the described step that forms pillar on transparency carrier comprises:
On described transparency carrier, apply photoresist;
By exposure, develop, photoresist described in patterning;
Transparency carrier described in etching;
Peel off described photoresist, form described pillar.
3. method for packing as claimed in claim 2, is characterized in that, described etching is wet etching, and the solution of etching is hydrofluoric acid.
4. method for packing as claimed in claim 1, is characterized in that, described pillar is that cross section is circular or polygonal prism.
5. method for packing as claimed in claim 1, is characterized in that, the height of described pillar is more than or equal to 1.5um and is less than or equal to 2.5um.
6. method for packing as claimed in claim 1, is characterized in that, described transparency carrier corresponding to described array base palte in the interval region of every adjacent two row pixels, the interval region of every adjacent two row pixels, forms described pillar.
7. method for packing as claimed in claim 1, it is characterized in that, described transparency carrier corresponding to described array base palte in the interval region of every adjacent two row pixels, the interval region at interval of two row or three row or four row or five row pixels, forms described pillar.
8. method for packing as claimed in claim 1, it is characterized in that, described transparency carrier corresponding to described array base palte in the interval region of every adjacent two row pixels, the interval region at interval of two row or three row or four lines or five-element's pixel, forms described pillar.
9. method for packing as claimed in claim 1, is characterized in that, by screen printing technique coated glass powder on described transparency carrier.
10. method for packing as claimed in claim 1, is characterized in that, also comprises the described glass dust of baking after the step of coated glass powder, and described glass dust is solidified.
11. method for packing as claimed in claim 10, is characterized in that, the temperature of described baking is for higher than equaling 350 ℃ and lower than equaling 450 ℃.
12. 1 kinds of OLED display devices, comprising:
Array base palte;
The transparency carrier being oppositely arranged with described array base palte;
Between described array base palte and transparency carrier, be provided with a plurality ofly for resistance to compression and keep the pillar that box is thick, it is characterized in that, described support column type is formed on described transparency carrier, identical with the material of described transparency carrier.
13. OLED display devices as claimed in claim 12, is characterized in that, the material of described pillar is one or more in glass, plastics, organic material.
14. OLED display devices as claimed in claim 12, is characterized in that, described pillar is cylindrical columns, and its cross section is circular.
15. OLED display devices as claimed in claim 14, is characterized in that, the radius of described circle is more than or equal to 2um and is less than or equal to 7um.
16. OLED display devices as claimed in claim 12, is characterized in that, described pillar is prism, and its cross section is polygon.
17. OLED display devices as claimed in claim 16, is characterized in that, described polygon is rectangle.
18. OLED display devices as claimed in claim 16, is characterized in that, described polygon is square.
19. OLED display devices as claimed in claim 18, is characterized in that, the described foursquare length of side is more than or equal to 4um and is less than or equal to 14um.
20. OLED display devices as claimed in claim 12, is characterized in that, the cross section of described pillar is ellipse or irregular figure.
21. OLED display devices as claimed in claim 12, is characterized in that, the height of described pillar is more than or equal to 1.5um and is less than or equal to 2.5um.
22. OLED display devices as claimed in claim 12, is characterized in that, described transparency carrier corresponding to described array base palte in the interval region of every adjacent two row pixels, the interval region of every adjacent two row pixels, forms described pillar.
23. OLED display devices as claimed in claim 12, it is characterized in that, described transparency carrier corresponding to described array base palte in the interval region of every adjacent two row pixels, the interval region at interval of two row or three row or four row or five row pixels, forms described pillar.
24. OLED display devices as claimed in claim 12, it is characterized in that, described transparency carrier corresponding to described array base palte in the interval region of every adjacent two row pixels, the interval region at interval of two row or three row or four lines or five-element's pixel, forms described pillar.
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