CN101866583A - Rear cover and manufacturing method thereof - Google Patents
Rear cover and manufacturing method thereof Download PDFInfo
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- CN101866583A CN101866583A CN 201010116660 CN201010116660A CN101866583A CN 101866583 A CN101866583 A CN 101866583A CN 201010116660 CN201010116660 CN 201010116660 CN 201010116660 A CN201010116660 A CN 201010116660A CN 101866583 A CN101866583 A CN 101866583A
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Abstract
The invention discloses a rear cover and a manufacturing method of the rear cover, wherein a luminous area corresponding to a pixel display area matrix on a baseplate is formed on one surface of the rear cover facing to the baseplate, and the rear cover also comprises at least one circle of continuous projections surrounding the luminous area at the periphery of the luminous area. By forming the projections at the periphery of the luminous area, not only the required bonding strength can be ensured when an OLED is packaged, but also the distance between the rear cover and the baseplate can be greatly reduced, the capability of the OLED for blocking vapor and oxygen infiltration is enhanced, and the service life of the OLED is effectively prolonged.
Description
Technical field
The present invention relates to the electronic apparatus technical field, particularly relate to the manufacture method of a kind of bonnet and bonnet.
Background technology
Display of organic electroluminescence (OLED, Organic Light-Emitting Diode) is present emerging a kind of flat-panel monitor, since OLED have active illuminating, contrast height, can slimming, plurality of advantages such as response speed is fast, be acknowledged as the main force of display of future generation.
The typical structure of existing OLED as shown in Figure 1, comprise: base plate glass 1, be deposited on the anode 2 on the base plate glass 1, cover the organic function layer 3 on the anode 2, be positioned at the negative electrode 4 on the organic function layer 3, the bonnet 6 corresponding with base plate glass 1 is attached to the drying agent 5 of bonnet 6 on negative electrode 4 one side luminous zones, and the packaging plastic 7 that is positioned at glass substrate 1 and bonnet 6 contact positions.
Lost efficacy easily because the luminous organic material in the organic function layer 3 is met steam oxygen,,, prolonged the serviceable life of OLED so that reduce of the damage of steam oxygen to organic function layer so must add bonnet 6 and drying agent 5 encapsulates.
Even but using bonnet and drying agent, the steam oxygen that still has considerable dosage penetrates in the OLED, damages organic function layer.Be still a difficult problem that needs to be resolved hurrily at present the serviceable life that how to prolong OLED.
Summary of the invention
The manufacture method that the purpose of this invention is to provide a kind of bonnet and bonnet is to prolong the serviceable life of OLED.
The invention provides a kind of bonnet, described bonnet is formed with the luminous zone corresponding with the pixel display area matrix on the substrate towards the one side of substrate, and described bonnet also comprises the continuous projection of at least one circle of surrounding described luminous zone in periphery, described luminous zone.
Preferably, described bonnet described luminous zone and and described projection between also be formed with groove.
Concrete, described groove is continuously or Discrete Distribution.
Preferably, the degree of depth of described groove is not more than half of bonnet thickness of glass.
Concrete, the degree of depth of described groove can be 0.1～0.4mm, width can be 0.1～10mm.
Concrete, the height of described projection can be 5～100 μ m, width can be 5～200 μ m.
Concrete, it is trapezoidal that the cross section of described projection can be.
The present invention also provides a kind of manufacture method of bonnet, comprising:
Form first pattern in the bonnet glass to the one side of substrate;
According to described first pattern in the bonnet formation on glass luminous zone corresponding with in the continuous projection of at least one circle periphery, described luminous zone, that surround described luminous zone with the pixel display area matrix on the substrate;
Remove bonnet described first pattern on glass.
Describedly be specifically as follows at bonnet formation first pattern on glass: at the one side spin coating photoresist of described bonnet glass to substrate, exposure imaging forms described first pattern.
Describedly be specifically as follows: paste protective tapes in described bonnet glass to the one side of substrate, utilize laser engraving to go out described first pattern at bonnet formation first pattern on glass.
Describedly be specifically as follows: form described first pattern to the one side of substrate by screen printing ink in described bonnet glass at bonnet formation first pattern on glass.
Describedly be specifically as follows: around the one side that cover glass does not form first pattern after with two is fitted mutually and sealed, immerse that etching forms described projection in the acid solution that contains fluorine ion in bonnet formation projection on glass.
Describedly be specifically as follows in bonnet formation projection on glass: the one side sandblast that described bonnet glass is had first pattern forms described projection.
Preferably, before described back cover glass forms first pattern or after forming described projection, described method also comprises: form the groove between described luminous zone and described projection.
Concrete, the forming process of described groove can comprise: form second pattern in described bonnet glass to the one side of substrate; According to described second pattern at the described groove of bonnet formation on glass; Remove bonnet described second pattern on glass.
The manufacture method of bonnet of the present invention and bonnet, by the peripheral projection that forms in the luminous zone, when encapsulating, OLED both can guarantee required bond strength, can significantly reduce the distance between bonnet and the substrate again, strengthen the ability that OLED stops that steam oxygen infiltrates, effectively prolonged the serviceable life of OLED.
Description of drawings
Fig. 1 is the typical section synoptic diagram of existing OLED;
Fig. 2 is the elevational schematic view of back cover glass of the present invention before cutting;
Fig. 3 is the enlarged diagram at I place among Fig. 2;
Fig. 4 is the schematic cross-section along A-A line among Fig. 3;
Fig. 5 is the enlarged diagram at K place among Fig. 4;
Fig. 6 is the schematic cross-section of an embodiment of bonnet of the present invention;
Fig. 7 is the schematic cross-section of another embodiment of bonnet of the present invention;
Fig. 8 is the schematic flow sheet of embodiment of the manufacture method of bonnet of the present invention.
Embodiment
For above-mentioned purpose of the present invention, feature and advantage can be become apparent more, the embodiment of the invention is described in further detail below in conjunction with the drawings and specific embodiments.
The inventor is through discovering: the steam oxygen that penetrates in the OLED mainly is to infiltrate by packaging plastic, and and bonnet and substrate between distance dependent: distance is big more, and the speed that steam oxygen infiltrates is just fast more, and the life-span of OLED is just short more.But consider the bond strength of bonnet and substrate, the thickness of packaging plastic can not be thin excessively.The present invention will provide a kind of bonnet exactly, can significantly reduce the distance of bonnet and substrate under the prerequisite of the bond strength that guarantees bonnet and substrate, stops the infiltration of steam oxygen, prolongs the serviceable life of OLED.
Embodiment one
The invention provides a kind of bonnet, please be simultaneously referring to Fig. 2, Fig. 3 and Fig. 4, wherein, Fig. 2 is the elevational schematic view of back cover glass of the present invention before cutting, Fig. 3 is the enlarged diagram at I place among Fig. 2, the elevational schematic view that also can regard a bonnet as, Fig. 4 is the schematic cross-section along A-A line among Fig. 3.
Described bonnet 10 is formed with the luminous zone corresponding with the pixel display area matrix on the substrate 101 towards the one side of substrate (not shown), 101 peripheries also comprise the continuous projection 102 of at least one circle of surrounding described luminous zone 101 to described bonnet 10 in the luminous zone, for example the circle of 3 among Fig. 3 and Fig. 4.
Described protruding 102 height can be 5～100 μ m, and width can be 5～200 μ m.
When bonnet 10 during with the substrate involution, because packaging plastic can be embedded into the sunk area between the projection 102, make that packaging plastic has certain thickness between bonnet 10 and the substrate, guaranteed the intensity that both are bonding.Distance between projection 102 and the substrate can reach 0.1～2 μ m, and projection 102 is that continuous one whole circle surrounds luminous zone 101, therefore, can significantly strengthen the blocking capability to steam oxygen, prolongs the serviceable life of OLED thus.
It is shown in Figure 5 trapezoidal that described protruding 102 cross section preferably is, and this structure is easier to packaging plastic and is embedded into sunk area between the projection 102, guarantees bond strength.The cross section pattern that the concentration of etching liquid that can be by control etching projection and time are controlled projection 102.Described etching liquid is the acid solution that contains fluorine ion, and concentration is 10%～40%, and etching time is 1～20 minute.
The cross section of 101 peripheries, luminous zone also can be as shown in Figure 6, and is equal with projection 102 in the bonnet glass height of protruding 102 peripheries.Because packaging plastic just can reach required bond strength and height at protruding 102 places, therefore the bonnet glass structure of protruding 102 peripheries does not influence the effect that encapsulation back OLED stops steam oxygen.
In addition, because the ability that the OLED opposing steam oxygen that uses described bonnet encapsulation to form infiltrates improves greatly, can not attach drying agent in the luminous zone, therefore described bonnet also is fit to the OLED of top light emitting and lighting at two sides.Use the OLED life-span of described bonnet can reach 3～5 years, be significantly increased with respect to 100～200 days that have OLED now.
To requiring higher OLED serviceable life, can also between the luminous zone 101 and described protruding 102 of bonnet 10, form groove 103, described groove 103 is between described luminous zone 101 and a circle protruding 102 adjacent with described luminous zone 101.The bonnet cross section that has formed groove as shown in Figure 7 can the filling liquid drying agent in the groove 103.Groove 103 can continuous distribution, promptly 101 forms a complete circle around the luminous zone, also can Discrete Distribution.
Consider the physical strength of bonnet 10, more excellent, the degree of depth of groove 103 is not more than half of bonnet thickness of glass.The degree of depth of groove 103 can be 0.1～0.4mm, and width can be 0.1～10mm, is advisable can use syringe needle filling liquid drying agent.
The bonnet that has described groove 103 because luminous zone 101 can printing opacity, therefore, still goes for the OLED of top light emitting and lighting at two sides.
Described liquid drier at inert gas (as N
2) solidify back and substrate package under the atmosphere.Can reach more than 10 years the serviceable life that use has projection and is filled with the OLED that the bonnet encapsulation of the groove of liquid drier forms.
Bonnet of the present invention, by the peripheral projection that forms in the luminous zone, when encapsulating, OLED both can guarantee required bond strength, can significantly reduce the distance between bonnet and the substrate again, strengthen the ability that OLED stops that steam oxygen infiltrates, effectively prolonged the serviceable life of OLED; By on bonnet, further being formed for the groove of filling liquid drying agent, can further prolong the serviceable life of the OLED that uses this bonnet.
Embodiment two
The present invention also provides a kind of manufacture method of bonnet, as shown in Figure 8, comprising:
S10 forms first pattern in the bonnet glass to the one side of substrate.
After choosing the back cover glass, also can comprise conventional polishing process.It is the white glass of 0.7mm that described back cover glass can be selected thickness for use.
First pattern hides the position of projection, and the part between luminous zone and the projection is come out.Described bonnet formation first pattern on glass can for: at the one side spin coating photoresist of described bonnet glass to substrate, exposure imaging forms described first pattern.Wherein, the spin coating of photoresist, exposure imaging can be same as the prior art.
Described bonnet formation first pattern on glass also can for: paste protective tapes in described bonnet glass to the one side of substrate, utilize laser engraving to go out described first pattern.Wherein, the stickup of protective tapes, laser engraving can be same as the prior art.
Described bonnet formation first pattern on glass can also for: form described first pattern to the one side of substrate by screen printing ink in described bonnet glass.
S20, according to described first pattern in the bonnet formation on glass luminous zone corresponding with in the continuous projection of at least one circle periphery, described luminous zone, that surround described luminous zone with the pixel display area matrix on the substrate.
Describedly be specifically as follows: around the one side that cover glass does not form first pattern after with two is fitted mutually and sealed, immerse that etching forms described projection in the acid solution that contains fluorine ion in bonnet formation projection on glass.It is trapezoidal that the cross section of described projection preferably is.The described acid solution concentration that contains fluorine ion is 10%～40%, and etching time is 1～20 minute.The height of described projection is 5～100 μ m, and width is 5～200 μ m.
S30 removes bonnet described first pattern on glass.
After forming projection, also comprise and remove first pattern (photoresist, protective tapes or printing ink that bonnet is on glass), obtain bonnet; afterwards; also comprise and clean the also process of dry bonnet, the technology that is adopted in these processes is same as the prior art, and the present invention repeats no more this.
Optionally, before step S10 or after the S20, can also comprise step S40: form the groove between described luminous zone and described projection, described groove is between described luminous zone and a circle projection adjacent with described luminous zone.
The forming process of described groove can comprise: form second pattern in described bonnet glass to the one side of substrate; According to described second pattern at the described groove of bonnet formation on glass; Remove bonnet described second pattern on glass.The degree of depth of described groove is 0.1～0.4mm, and width is 0.1～10mm.
The specific implementation that forms second pattern can be identical with the technological means that forms first pattern: or adopt spin coating photoresist, exposure imaging to form second pattern; Or adopt stickup protective tapes, laser engraving to form second pattern; Or adopt screen printing ink to form second pattern.
The specific implementation that forms groove can be identical with the technological means that forms projection: or around the one side that cover glass after two does not form second pattern fitted mutually and sealing, immersion contains that etching forms groove in the acid solution of fluorine ion, can select the etching liquid of identical composition when forming projection for use; Or the one side sandblast that bonnet glass has second pattern formed groove.
For forming the implementation that the projection back forms groove earlier, first pattern need hide the zone at protruding place, and second pattern exposes the zone at groove place; Form protruding implementation after forming groove earlier, second pattern exposes the zone at groove place, and first pattern hides the zone at protruding place, and can further hide the zone at groove place.
Because therefore the degree of depth of groove will, form protruding manufacturing process much larger than the height of projection after forming groove earlier, can groove not blocked when forming first pattern.A kind of preferred manufacture process is: adopt sandblast to form groove earlier, adopt the acid solution etching that contains fluorine ion to form projection again.Because it is slow than sandblast to contain the acid solution etching speed of fluorine ion, and it is also rough through the device surface of blasting treatment, therefore, after sandblast forms groove, the acid solution that employing contains fluorine ion carries out etching can be when forming projection, and the bottom and the sidewall of groove carried out smoothing processing.
The manufacture method of bonnet of the present invention, by the peripheral projection that forms in the luminous zone, when encapsulating, OLED both can guarantee required bond strength, can significantly reduce the distance between bonnet and the substrate again, strengthen the ability that OLED stops that steam oxygen infiltrates, effectively prolonged the serviceable life of OLED; By on bonnet, further being formed for the groove of filling liquid drying agent, can further prolong the serviceable life of the OLED that uses this bonnet.
Because the embodiment of back cover manufacturing method is more to the similar content of bonnet embodiment, that therefore introduces is simpler, and relevant part sees also bonnet embodiment part.
Need to prove, in this article, relational terms such as first and second grades only is used for an entity or operation are made a distinction with another entity or operation, and not necessarily requires or hint and have the relation of any this reality or in proper order between these entities or the operation.And, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thereby make and comprise that process, method, article or the equipment of a series of key elements not only comprise those key elements, but also comprise other key elements of clearly not listing, or also be included as this process, method, article or equipment intrinsic key element.Do not having under the situation of more restrictions, the key element that limits by statement " comprising ... ", and be not precluded within process, method, article or the equipment that comprises described key element and also have other identical element.
The above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention.All any modifications of being done within the spirit and principles in the present invention, be equal to replacement, improvement etc., all be included in protection scope of the present invention.
Claims (15)
1. a bonnet is characterized in that, described bonnet is formed with the luminous zone corresponding with the pixel display area matrix on the substrate towards the one side of substrate, and described bonnet also comprises the continuous projection of at least one circle of surrounding described luminous zone in periphery, described luminous zone.
2. bonnet as claimed in claim 1 is characterized in that, described bonnet also is formed with groove between described luminous zone and described projection.
3. bonnet as claimed in claim 2 is characterized in that, described groove is continuously or Discrete Distribution.
4. bonnet as claimed in claim 2 is characterized in that the degree of depth of described groove is not more than half of bonnet thickness of glass.
5. bonnet as claimed in claim 4 is characterized in that, the degree of depth of described groove is 0.1～0.4mm, and width is 0.1～10mm.
6. as each described bonnet of claim 1-5, it is characterized in that the height of described projection is 5～100 μ m, width is 5～200 μ m.
7. as each described bonnet of claim 1-5, it is characterized in that the cross section of described projection is trapezoidal.
8. the manufacture method of a bonnet is characterized in that, comprising:
Form first pattern in the bonnet glass to the one side of substrate;
According to described first pattern in the bonnet formation on glass luminous zone corresponding with in the continuous projection of at least one circle periphery, described luminous zone, that surround described luminous zone with the pixel display area matrix on the substrate;
Remove bonnet described first pattern on glass.
9. method as claimed in claim 8 is characterized in that, describedly is specially at bonnet formation first pattern on glass: at the one side spin coating photoresist of described bonnet glass to substrate, exposure imaging forms described first pattern.
10. method as claimed in claim 8 is characterized in that, describedly is specially at bonnet formation first pattern on glass: paste protective tapes in described bonnet glass to the one side of substrate, utilize laser engraving to go out described first pattern.
11. method as claimed in claim 8 is characterized in that, describedly is specially at bonnet formation first pattern on glass: form described first pattern to the one side of substrate by screen printing ink in described bonnet glass.
12. method as claimed in claim 8 is characterized in that, describedly is specially in bonnet formation projection on glass:
Around the one side that cover glass after two is not formed first pattern is fitted mutually and sealed, immerse that etching forms described projection in the acid solution that contains fluorine ion.
13. method as claimed in claim 8 is characterized in that, describedly is specially in bonnet formation projection on glass:
The one side sandblast that described bonnet glass is had first pattern forms described projection.
14. as each described method of claim 8-13, it is characterized in that, before described back cover glass forms first pattern or after forming described projection, described method also comprises: form the groove between described luminous zone and described projection.
15. method as claimed in claim 14 is characterized in that, the forming process of described groove comprises:
Form second pattern in described bonnet glass to the one side of substrate;
According to described second pattern at the described groove of bonnet formation on glass;
Remove bonnet described second pattern on glass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010116660 CN101866583A (en) | 2010-02-26 | 2010-02-26 | Rear cover and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010116660 CN101866583A (en) | 2010-02-26 | 2010-02-26 | Rear cover and manufacturing method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN101866583A true CN101866583A (en) | 2010-10-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201010116660 Pending CN101866583A (en) | 2010-02-26 | 2010-02-26 | Rear cover and manufacturing method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105304642A (en) * | 2015-09-24 | 2016-02-03 | 南京中电熊猫液晶显示科技有限公司 | Array substrate and manufacturing method thereof |
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| CN1404162A (en) * | 2001-09-05 | 2003-03-19 | 矶光显示科技股份有限公司 | Sealing structure, sealing method and sealing unit of organic LED |
| CN1562841A (en) * | 2004-04-09 | 2005-01-12 | 信利半导体有限公司 | Method for fabricating organic electroluminescent display and back cover made from glass |
| CN1691852A (en) * | 2004-04-06 | 2005-11-02 | 三星Sdi株式会社 | Organic electroluminescence device and manufacturing method thereof |
| CN1822739A (en) * | 2005-11-28 | 2006-08-23 | 友达光电股份有限公司 | Double-face display and its forming method |
| CN1942031A (en) * | 2005-09-30 | 2007-04-04 | 电子科技大学 | Production of isolating column of organic electroluminescent device |
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2010
- 2010-02-26 CN CN 201010116660 patent/CN101866583A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1404162A (en) * | 2001-09-05 | 2003-03-19 | 矶光显示科技股份有限公司 | Sealing structure, sealing method and sealing unit of organic LED |
| CN1691852A (en) * | 2004-04-06 | 2005-11-02 | 三星Sdi株式会社 | Organic electroluminescence device and manufacturing method thereof |
| CN1562841A (en) * | 2004-04-09 | 2005-01-12 | 信利半导体有限公司 | Method for fabricating organic electroluminescent display and back cover made from glass |
| CN1942031A (en) * | 2005-09-30 | 2007-04-04 | 电子科技大学 | Production of isolating column of organic electroluminescent device |
| CN1822739A (en) * | 2005-11-28 | 2006-08-23 | 友达光电股份有限公司 | Double-face display and its forming method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105304642A (en) * | 2015-09-24 | 2016-02-03 | 南京中电熊猫液晶显示科技有限公司 | Array substrate and manufacturing method thereof |
| CN105304642B (en) * | 2015-09-24 | 2019-05-17 | 南京中电熊猫液晶显示科技有限公司 | A kind of array substrate and its manufacturing method |
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Application publication date: 20101020 |