CN105047688B - A kind of packaging technology of small miniature organic light emitting display - Google Patents
A kind of packaging technology of small miniature organic light emitting display Download PDFInfo
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- CN105047688B CN105047688B CN201510465671.XA CN201510465671A CN105047688B CN 105047688 B CN105047688 B CN 105047688B CN 201510465671 A CN201510465671 A CN 201510465671A CN 105047688 B CN105047688 B CN 105047688B
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- light emitting
- organic light
- emitting display
- packaging technology
- miniature organic
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Abstract
The invention belongs to organic light emitting display fields, and in particular to a kind of packaging technology of small miniature organic light emitting display.The technique makes device have good anti shock and vibration performance；Interim screening glass is pasted, protects display area not to be contaminated in technical process, and eliminates ultra-violet curing damage；Display panel is thinned, the heat dissipation performance of device is improved, improves the integrated level of encapsulation；Gap filling is carried out using silica gel, soft cladding can be carried out to bonding wire and protected, reduce the influence that stress variation connects circuit；The combination of display panel and pedestal interconnection, improves the integrated level of device and the integral heat sink performance of device；Flexile base form can be taken, more convenient for system application.
Description
Technical field
The invention belongs to organic light emitting display fields, and in particular to a kind of encapsulation of small miniature organic light emitting display
Technique.
Background technology
Organic light emitting display, with self-luminous, visual angle is wide, the reaction time is short, and luminous efficiency is high, colour gamut is big, panel is light
The features such as thin is the third generation display technology for replacing LCD.Small miniscope stock size is less than 2.5 inches, and integration is high,
It is the display terminal of Mobile portable type equipment.Current small miniature organic light emitting display uses display panel and driving circuit substantially
Backboard directly connects, and display panel PAD and drive circuit board PAD are carried out circuit interconnection by bonding wire, then carries out bonding wire and fill out
Fill the packing forms of protection.This process be easy to cause display panel displacement and bonding wire short circuit, and answering during filling adhesive curing
Power changes the potential damage for be easy to causeing organic luminous layer and barrier layer.
Invention content
For this purpose, technical problem to be solved by the present invention lies in overcome display panel in traditional technology to be easy displacement and bonding wire
It is easy the phenomenon of short circuit, and fills the potential damage that the stress variation during adhesive curing be easy to cause organic luminous layer and barrier layer
Bad technical bottleneck, to propose it is a kind of preparing high reliability, be easily integrated and safeguard, anti-vibration and impact, hence it is evident that enhancing exist
The reliability used in Mobile portable formula equipment；Realize packing forms technical process it is inexpensive, it is efficient, can carry out batch give birth to
The technique of the small miniature organic light emitting display of production.
In order to solve the above technical problems, the present invention the invention discloses a kind of envelopes of small miniature organic light emitting display
Dress technique, wherein the technique includes the following steps：
Each display unit is directed to the interim screening glass of miniature organic light emitting display to paste；Then it will paste
There is the whole display panel bottom of interim screening glass to be placed in progress grinding and polishing in Mechanical polishing equipment to be thinned；Then by interim screening glass
Slice separation is at single display panel；Again stickup display panel is designed in the middle part of the miniature organic light emitting display pedestal
Lower layer's slot region, be used in combination dispenser to coat ultra-violet curing adhesive resin in lower layer's slot region；Last injecting glue protection.
Preferably, the packaging technology of the small miniature organic light emitting display, wherein the interim screening glass is to mix
Uvioresistant coating polyethylene terephthalate film.
Preferably, the packaging technology of the small miniature organic light emitting display, wherein have under the interim screening glass
There is one layer of solid state heat to reply glue-line.
More preferably, the packaging technology of the small miniature organic light emitting display, wherein the grinding and polishing is thinned to
Stop at substrate circuit 0.35mm.
Preferably, the packaging technology of the small miniature organic light emitting display, wherein the grinding and polishing is thinned secondary
Number carries out rough polishing twice, to be thinned for the first time, using 10 microns of magnesium oxide particle abrasive materials of diameter；Second, using 3 microns of diameter
Oxidation particle carries out smart throwing.
Preferably, the packaging technology of the small miniature organic light emitting display, wherein be coated on the pedestal ultraviolet
Cure heat conduction adhesive resin.
Further, the packaging technology of the small miniature organic light emitting display, wherein the coating ultra-violet curing
After adhesive resin, single display panel is put into glue bearing areas with the temporary patch machine, the UV radiation curing time is
15 seconds.
It is more further, the packaging technology of the small miniature organic light emitting display, wherein before the slice,
The blue film needed for slice need to be also pasted on interim screening glass.
Preferably, the packaging technology of the small miniature organic light emitting display, wherein cutting speed per second 10 arrives
15mm, Cutting Road width 0.15mm；Deionized water fan-shaped spray is carried out after cutting and rinses cleaning, and carries out high speed drying, is cleaned
Time 5min dries 1100 revs/min of rotating speed.
More preferably, the packaging technology of the small miniature organic light emitting display, wherein the injecting glue protection
Position is to carry out injection silica gel in the void area of single display panel and pedestal, and cured.
The above technical solution of the present invention has the following advantages over the prior art, and the optimizely select of encapsulating material is matched and combined
Suitable technical process so that device is resistant to good anti shock and vibration；Interim screening glass is pasted, is protected in technical process
Shield display area is not contaminated；Display panel is thinned, the heat dissipation performance of device is improved, improves the integrated of encapsulation
Degree；Gap filling is carried out using silica gel, soft cladding can be carried out to bonding wire and protected, reduce the shadow that stress variation connects circuit
It rings；The combination of display panel and pedestal interconnection, improves the integrated level of device and the integral heat sink performance of device；It can be with
Flexile base form is taken, more convenient for system application.
Description of the drawings
In order to make the content of the present invention more clearly understood, it below according to specific embodiments of the present invention and combines
Attached drawing, the present invention is described in further detail, wherein
Fig. 1 is the process flow chart in the embodiment of the present invention 1；
Fig. 2 is the schematic diagram that screening glass is pasted on single display panel；
Fig. 3 is that single display panel interconnects schematic diagram with pedestal；
Reference numeral is expressed as：The single display panels of 1-；The interim screening glass of 2-；Weld bond PAD on 3- display units；4- is
Pedestal；The bonding wire of 5- display units and the interconnection of pedestal circuit.
Specific implementation mode
Embodiment
As shown in Figure 1, present embodiment discloses a kind of packaging technology of small miniature organic light emitting display, step is such as
Under：
(1) interim screening glass 2 is directed at each display unit 1 to paste, pastes precision X/Y direction ± 0.05mm, glued
After patch is placed on hot plate 60 DEG C of bakings 30 seconds, display panel forms temporary bond with screening glass；
(2) the whole display panel bottom for being pasted with interim screening glass 2 progress grinding and polishing in Mechanical polishing equipment is placed in subtract
Thin, grinding and polishing thinning process is at twice：For the first time, rough polishing is carried out using 10 microns of magnesium oxide particle abrasive materials of diameter, second, used
3 microns of oxidation particles of diameter carry out smart throwing, are tested, are finally thinned at 0.35 ± 0.02mm of substrate circuit by step instrument
Stop, impregnating and be cleaned by ultrasonic processing 60 seconds in deionized water, to remove grinding and polishing impurity particle, carries out high speed drying, cleaned
To three times, guarantee is ground with abrasive grain without attachment Cheng Chongfu two；
(3) slice is pasted on interim screening glass 2 with blue film, blue film is fixed in slide holding frame, 60 DEG C of bakings on hot plate
It 30 seconds, being placed on slicer and carries out accurate cutting, depth of cut control arrives 15mm in blue film adhesive surface, cutting speed per second 10,
Cutting Road width 0.15mm；Display panel unit shown in Fig. 2 is formed after cutting, each unit remains secured on blue film, into
Row deionized water fan-shaped spray rinses cleaning, and carries out high speed drying, scavenging period 5min, dries 1100 revs/min of rotating speed, gets rid of
After dry purging is carried out with ion wind gun 1 minute, it will be by unit display panel and blue UF membrane with vacuum cups；
(4) 4 middle part of pedestal is designed with the lower layer's slot region for pasting display panel unit, is coated in the area with dispenser
Ultra-violet curing adhesive resin, glue-spread are controlled at 35mg/ square feet, and display panel unit is accurately put into painting with chip mounter
Glue region is put into 250g/ square feet, positional precision 0.05mm of pressure, uses ultraviolet source irradiation immediately 15 seconds, carries out ultraviolet solid
Change, after stickup to ultraviolet irradiation time started Separation control within 5 seconds, is put into plasma cleaner and carries out on display unit
Weld bond PAD3 plasma cleanings, under the lasting curing environment of 60 DEG C of hot plate, protective layer is removed with vacuum head, by unit display part
Bonding wire interconnection is carried out with pedestal, each two PAD corresponds to the bonding wire 5 of display unit and the interconnection of pedestal circuit, carried out with ion wind gun
Purging 1 minute.Carry out whole Photoelectric Detection；
(5) silica gel is injected in void area, forms injecting glue protection zone, 110 DEG C of injecting glue temperature, injecting glue amount is no more than
Display area edge, 70 DEG C of oven heat cure for 24 hours.
Obviously, the above embodiments are merely examples for clarifying the description, and does not limit the embodiments.It is right
For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of variation or
It changes.There is no necessity and possibility to exhaust all the enbodiments.And it is extended from this it is obvious variation or
It changes still within the protection scope of the invention.
Claims (8)
1. a kind of packaging technology of small miniature organic light emitting display, which is characterized in that the technique includes the following steps：
Each display unit is directed to the interim screening glass of miniature organic light emitting display to paste；Then it will be pasted with and face
When screening glass whole display panel bottom be placed in Mechanical polishing equipment carry out grinding and polishing be thinned；Then interim screening glass is sliced
It is separated into single display panel；It is designed with and pastes under display panel in the middle part of the miniature organic light emitting display pedestal again
Layer slot region, is used in combination dispenser to coat ultra-violet curing adhesive resin in lower layer's slot region；Last injecting glue protection；It is described
Interim screening glass is to mix uvioresistant coating polyethylene terephthalate film；There is one layer of solid state heat under the interim screening glass
Reply glue-line.
2. the packaging technology of small miniature organic light emitting display as described in claim 1, which is characterized in that the grinding and polishing subtracts
It is thin to stop at substrate circuit 0.35mm.
3. the packaging technology of small miniature organic light emitting display as claimed in claim 2, which is characterized in that the mill
It is twice, to be thinned for the first time to throw and number is thinned, and rough polishing is carried out using 10 microns of magnesium oxide particle abrasive materials of diameter；It second, uses
3 microns of oxidation particles of diameter carry out smart throwing.
4. the packaging technology of small miniature organic light emitting display as claimed in claim 3, which is characterized in that on the pedestal
It is coated with ultra-violet curing heat conduction adhesive resin.
5. the packaging technology of small miniature organic light emitting display as claimed in claim 4, which is characterized in that the coating is purple
After outer solidification adhesive resin, single display panel is put into glue bearing areas with the temporary patch machine, it is UV radiation curing
Time is 15 seconds.
6. the packaging technology of small miniature organic light emitting display as claimed in claim 5, which is characterized in that the slice
Before, the blue film needed for slice need to be also pasted on interim screening glass.
7. the packaging technology of small miniature organic light emitting display as claimed in claim 6, which is characterized in that cutting speed is every
Second 10 arrives 15mm, Cutting Road width 0.15mm；Deionized water fan-shaped spray is carried out after cutting and rinses cleaning, and is carried out high speed and got rid of
Dry, scavenging period 5min dries 1100 revs/min of rotating speed.
8. the packaging technology of small miniature organic light emitting display as claimed in claim 7, which is characterized in that the injecting glue is protected
The position of shield is to carry out injection silica gel in the void area of single display panel and pedestal, and cured.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510465671.XA CN105047688B (en) | 2015-07-31 | 2015-07-31 | A kind of packaging technology of small miniature organic light emitting display |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510465671.XA CN105047688B (en) | 2015-07-31 | 2015-07-31 | A kind of packaging technology of small miniature organic light emitting display |
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| Publication Number | Publication Date |
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| CN105047688A CN105047688A (en) | 2015-11-11 |
| CN105047688B true CN105047688B (en) | 2018-09-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510465671.XA Active CN105047688B (en) | 2015-07-31 | 2015-07-31 | A kind of packaging technology of small miniature organic light emitting display |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101609872A (en) * | 2009-06-19 | 2009-12-23 | 云南北方奥雷德光电科技股份有限公司 | Quantity production packaging technique of minitype OLED display |
| CN103295893A (en) * | 2013-05-29 | 2013-09-11 | 华进半导体封装先导技术研发中心有限公司 | Wafer-level micro-assembly process |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020003403A1 (en) * | 2000-04-25 | 2002-01-10 | Ghosh Amalkumar P. | Thin film encapsulation of organic light emitting diode devices |
-
2015
- 2015-07-31 CN CN201510465671.XA patent/CN105047688B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101609872A (en) * | 2009-06-19 | 2009-12-23 | 云南北方奥雷德光电科技股份有限公司 | Quantity production packaging technique of minitype OLED display |
| CN103295893A (en) * | 2013-05-29 | 2013-09-11 | 华进半导体封装先导技术研发中心有限公司 | Wafer-level micro-assembly process |
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| CN105047688A (en) | 2015-11-11 |
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