CN1452437A - Method for mfg. organic electroluminescent display panel covered with protective film - Google Patents
Method for mfg. organic electroluminescent display panel covered with protective film Download PDFInfo
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- CN1452437A CN1452437A CN 02117224 CN02117224A CN1452437A CN 1452437 A CN1452437 A CN 1452437A CN 02117224 CN02117224 CN 02117224 CN 02117224 A CN02117224 A CN 02117224A CN 1452437 A CN1452437 A CN 1452437A
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Abstract
A process for preparing the organic electroluminescent display screen covered by protecting membranes is characterized by that the carrier substrate of the display screen is sequentially covered with a film able to absorb water and oxygen, an inorganic protecting film for preventing and stopping air, and a high-molecular film able to prevent penetration of external water and oxygen. Its advantages are thin thickness, low cost and high productivity.
Description
Technical field
The present invention relates to the manufacture method of the organic electroluminescent display panel of the manufacture method, particularly a kind of covered with protective film of organic electroluminescent display panel among a kind of FPD (LCD).
Background technology
In the past, in order to protect the organic substance of organic display panel accessory, generally be on the substrate that forms the display panel accessory, to paste crust (Can) or glass.But this can increase the thickness and the production cost of display panel, and makes the manufacturing process of display panel too complicated, directly causes problems such as equipment investment is too much, reduction production efficiency.
The structure of the organic electroluminescent display panel of prior art comprise to the positive pole (ITO or IXO) of pole plate supply positive charge, promote the positive charge of anodal supply arrive the positive charge injecting layer and the positive charge transfer layer of luminescent layer fast, utilize positive charge and electronics in conjunction with luminous luminescent layer, promote the electronics express delivery of negative pole supply arrive the electronics injecting layer of luminescent layer and electron supplying layer, to the negative pole (metal) of pole plate supplies electrons etc.Fig. 1 is the basic structure of the organic electroluminescent display panel of prior art: in Fig. 1, form anodal 2 on substrate 1 top, anodal 2 tops then are organic layers 3, organic layer must comprise luminescent layer, in order to improve luminous efficiency, can design electron supplying layer, electronics injecting layer, positive charge transfer layer and positive charge injecting layer.The top of organic layer 3 is negative poles 4 of supplies electrons.Anodal 2 positively chargeds are pressed, and negative pole 4 electronegative pressures can be seen the light that luminescent layer sends by substrate.
As shown in Figure 1, be between two metal electrodes, to fill the organic electroluminescent display panel accessory that organic substance is made, make the suitable organic substance of display panel if run into oxygen or moisture, just be easy to react, cause organic film aging (crystallization) and composition to change, reduce the performance of organic display panel.For the raw material of the organic film of protecting organic display panel is not subjected to the influence of moisture and oxygen, making will be through seal process as shown in Figure 2 behind the display panel accessory.In the crown cap 10 (Capsule) of Fig. 2, put into hygroscopic agent 9 (SUS Can or Glass etc.), and, smear adhesive 11 (Sealant) on every side at crown cap 10 (Capsule) for adhesive substrate 1 and crown cap 10 (Capsule) convenience.The display panel accessory is made in nitrogen 6 or argon gas, in this gaseous environment, compresses substrate 1 and crown cap 10 (Capsule) seals, and isolates display panel and contains the air of compositions such as moisture, oxygen, avoids display panel to sustain damage.
There is following problem in above-mentioned prior art: in order to isolate organic electroluminescent display panel and air, prior art sticks on crown cap 10 (Capsule) (Metal Canister or Glass etc.) on the substrate 1 that is carrying display panel.But (canister (Metal Canister) or glass (Glass) can produce following negative effect: (1) increases the thickness of display panel to also have one deck on the specification requirement substrate of this bag type; (2) adhesive of being smeared in the operation of adhesive substrate and crown cap (Capsule) (Sealant) may discharge some active gases, thereby shortens the life-span of accessory; (3) compositions such as airborne oxygen and moisture can penetrate adhesive (Sealant), shorten the life-span of accessory; (4) adhesive (Sealant) smears quality and may cause the aging of accessory; (5) hygroscopic agent has been injected in crown cap (Capsule) inside, to absorb the inner moisture of crown cap (Capsule), has improved the expense of raw materials of product; (6) longer because of the sealing process time of substrate and crown cap (Capsule), and need careful management, so increased equipment investment; (7) the display panel accessory that the area of plane is bigger is difficult to keep the smooth of crown cap (Capsule) (Metal Can) in process of production.Because the existence of these problems, the production efficiency of prior art is lower.
Summary of the invention
The object of the present invention is to provide a kind of manufacture method, the raw material organic substance of organic display panel accessory is protected, avoid it to be subjected to the influence of moisture and oxygen with organic electroluminescent display panel of covered with protective film.And the thickness of display panel narrowed down to below 1 millimeter.
Method of the present invention no longer adopts crown cap Capsule) (Metal Canister or Glass etc.), but cover the film that one deck can absorb moisture and oxygen on the carrier substrate top of organic electroluminescent display panel accessory; Covering one deck again can prevent and blocks air and the inorganic protective film of avoiding subsequent handling influence; And then covering one deck can prevent the macromolecule membrane of outside moisture and oxygen infiltration.
Method of the present invention is by covered with protective film, and (1) can reduce the thickness of organic display panel; (2) overcome the manufacturing difficulty of large tracts of land display panel; (3) simplify working process, reduce investment outlay, enhance productivity.
Description of drawings
Fig. 1 is the basic structure of the organic electroluminescent display panel accessory of prior art;
Fig. 2 is to use the sectional view of organic electroluminescent display panel accessory of encapsulation (Encapsulation) method of prior art;
Fig. 3 is to use the sectional view of the organic electroluminescent display panel accessory of passivation of the present invention (Passivation) method;
Fig. 4 is the process that the present invention covers passivation (Passivation) film;
Fig. 5 is the structure of silicon (Silicon);
Fig. 6 is the structure of epoxy resin (Epoxy Resin).
Embodiment
Of the present invention in order to protect the accessory of organic display panel, no longer adopt prior art to paste the method for crown cap (Capsule), but at the accessory top of organic display panel overlapping covering inorganic insulation film and organic or macromolecule membrane etc.The concrete structure of the structure of display panel accessory of the present invention and inorganic insulation film and diaphragms such as organic or macromolecule membrane as shown in Figure 3.
The process of manufacturing diaphragm shown in Figure 3 is as follows:
(1) makes organic display panel: on substrate 1, make anodal pattern (Pattern), above positive pole, cover one deck dielectric film 5 then, then make the accessory of organic display panel to isolate negative pole and to cover a barrier film 12 to isolate the negative pole zone; Above positive pole, cover a dielectric film 5 to isolate negative pole, afterwards, make the metal 7 (Metal) that connects negative pole, and cover a barrier film 12, then make the accessory of organic display panel to isolate the negative pole zone; Above positive pole, cover organic membrane 8, make the negative pole 4 of clause (Stripe) shape then.
(2) use raw materials such as Alq3, Cupc, above the substrate that produces accessory, cover one deck buffering organic membrane 16, in the manufacture process of hygroscopic film and diaphragm, sustain damage to prevent accessory.The covering method of buffering organic membrane 16 is identical with the covering method of the organic membrane 8 of organic display panel accessory, no longer stating more.
(3) after the organic membrane film forming 16, manufacturing can absorb the moisture of accessory generation or the moisture absorption layer 15 of oxygen, hygroscopic agent uses calcium oxide (CaO), barium monoxide (BaO), zeolite materials such as (Zeolite) usually, film forming procedure adopts technical methods such as chemical vapor deposition (CVD), thermal evaporation (ThermalEvaporation), E-Beam Evaporation, to reduce the influence to accessory.
(4) manufacture the inorganic protective film 14 of protection organic electroluminescent display panel accessory: in order to stop infiltrations such as airborne moisture, oxygen, and the adherence force between raising and the polymer protective film, make single or multiple lift inorganic protective film 14.When forming multilayer resist, ground floor adopts method manufacturings such as thermal evaporation (Thermal Evaporation), E-Beam Evaporation, keeps the characteristic of established film; The second layer adopts method manufacturings such as sputter (Sputter), chemical vapour deposition (CVD) CVD, improves the density of film.
(5) cover certain thickness high strength polymeric membrane 13 on inorganic insulating membrane 14 tops again, with the infiltration that prevents water branch, oxygen and the destruction of external impact force.
The manufacture method of above-mentioned organic display panel covers organic and inorganic, polymeric membrane on accessory top, has saved the crown cap (Capsule) of the protection accessory of prior art.The typical composition of diaphragm is macromolecule resin and parylene coating agents (Coating Agent) such as (Parylene) such as epoxy resin (Epoxy), silicones (Silicone), fluoride resin.
Embodiment 1:
As shown in Figure 4, the manufacture process of parylene (Parylene) film: under the pressure of 1.0 holders, heat dimer (Dimer) parylene (Di-para-xylylene) to 150 degrees centigrade, resolve into monomer (Monomer) parylene Paraxylylene, be not higher than under 680 degrees centigrade the condition at the pressure of 0.5 holder then and be ejected in the reative cell (Chamber), under the pressure of 25 degree Celsius, 0.1 holder, form polymer (Polymer) parylene Poly (para-xylylene), promptly form film.
Embodiment 2:
As shown in Figure 5, silicones is meant the polymer that contains organic group (Polymer) that the Si-O-Si combination by silicon and oxygen is connected.Therefore, it has the character of organic character and inorganic matter simultaneously.That is, analyze the molecular structure of silicones,, have inorganic natures such as thermal endurance, chemical stability, mar proof, high glaze because of the combination of Si-O-Si; Because of the organic trait that has of its side chain, have outstanding reactivity, dissolubility, productivity etc. simultaneously.According to the different shape of silicones, shared oil (oil), rubber (Rubber), resin kinds such as (Resin).Silicon (Silicon Resin) crosslinking degree is high more, and the activity of molecule and retractility are low more, hardness is high more.The great product of crosslink density is exactly silicones (Silicone Resin).
Embodiment 3:
As shown in Figure 6, epoxy (Epoxy) structure must be contained in the chemical based our unit of epoxy resin, produces with the mode of chloropropylene oxide and bisphenol-A in using usually.Epoxy resin is difficult to use separately, needs to add curing agent.Therefore, proper epoxy resin is intermediate product.Because of bisphenol A epoxide by 2,2-biconjugate hydroxy benzenes propane BPA (Bisphenol A) and chloromethane produce for oxygen cyclopropane ECH (being Epichlorohybrine) reaction, belong to phenyl ring nuclear (BisphenolA), so be difficult to rotate freely.Therefore, its drug-resistant performance and adherence force, obdurability, performance such as high temperature resistant are outstanding.And its intramolecular ether (Ether) base can improve drug-resistant performance and plasticity.Hydrophilic hydroxyl and hydrophobic hydrocarbon-based are put regularly, and therefore, its adherence force is outstanding.
The present invention saves the crown cap (Capsule) of prior art protection accessory by covered with protective film.Of the present invention giving prominence to is a little:
(1) 1 millimeter of thickness can be produced with interior ultralight, ultrathin display panel, the requirement of portable display screen (Display) can be adapted to better;
(2) do not need the adhesive, hygroscopic agent, crown cap (Capsule) etc. of prior art, and covered diaphragm, save the raw materials for production expense;
(3) eliminate the device systems of pasting crown cap (Capsule), and use diaphragm to cover case (Chamber), save equipment investment.
Claims (7)
1. the manufacture method of the organic electroluminescent display panel of a covered with protective film; be applicable to that the organic display panel accessory of protection is not subjected to external action; it is characterized in that: at the resilient coating and the hygroscopic film layer of the outside covering protection accessory of display panel accessory, overlapping again covering inorganic protective film and polymer protective film.
2. the manufacture method of the organic electroluminescent display panel of covered with protective film according to claim 1 is characterized in that: the resilient coating of this protection display panel accessory uses metallo-organic compound such as following raw material: Alq3, Alpq3, CuPc, BeBq2, Beq2, BeMq2, Mgq2, MgMq2, Zng2, ZnMg2, ZnBq2 or Coumarin, NPO, m-MTDATA, Perylene, organic substances such as TAZ, TPD.
3. the manufacture method of the organic electroluminescent display panel of covered with protective film according to claim 2 is characterized in that: the material that the absorbing film on this resilient coating top uses following raw material: CaO, BaO, Zeolite, MgO, Mullite, Silica Gel etc. to have absorption characteristic.
4. the manufacture method of the organic electroluminescent display panel of covered with protective film according to claim 3 is characterized in that: this inorganic protective film uses metal films such as oxide-film such as following raw material: SiNx, MgO, SiO2, Y2O3, Ta2O5, Al2O3, TiO2 and Al, Mo, Ti, Cr, Ag.
5. the manufacture method of the organic electroluminescent display panel of covered with protective film according to claim 1; it is characterized in that: the diaphragm of this protection accessory, the following macromolecule raw material that stability in use is good, poisture-penetrability is low: coating agent (Coating Agent) such as macromolecule resin such as Epoxy, Silicone, fluoride resin, argon resin, urea ester, phenol resin and Parylene.
6. the manufacture method of the organic electroluminescent display panel of covered with protective film according to claim 1, it is characterized in that: inorganic protective film and polymer protective film are one-time formed
7. the manufacture method of the organic electroluminescent display panel of covered with protective film according to claim 1, it is characterized in that: inorganic protective film and polymer protective film are to cover film forming repeatedly.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 02117224 CN1452437A (en) | 2002-04-17 | 2002-04-17 | Method for mfg. organic electroluminescent display panel covered with protective film |
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| CN 02117224 CN1452437A (en) | 2002-04-17 | 2002-04-17 | Method for mfg. organic electroluminescent display panel covered with protective film |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7427224B2 (en) | 2003-11-28 | 2008-09-23 | Optrex Corporation | Organic EL display and method for producing the same |
| CN100444699C (en) * | 2006-01-26 | 2008-12-17 | 友达光电股份有限公司 | Two-side display apparatus |
| US7560861B2 (en) | 2004-05-03 | 2009-07-14 | Lg Electronics Inc. | Organic electro-luminescence display device with an organic electro-luminescence array and fabricating method thereof |
| CN1694594B (en) * | 2004-05-03 | 2010-04-28 | Lg电子株式会社 | Organic electro-luminescence display device and fabricating method thereof |
| CN102842681A (en) * | 2011-06-21 | 2012-12-26 | 海洋王照明科技股份有限公司 | Organic electroluminescent device and preparation method thereof |
| CN103378303A (en) * | 2012-04-23 | 2013-10-30 | 海洋王照明科技股份有限公司 | Organic light-emitting device and encapsulating method thereof |
| CN103855323A (en) * | 2012-11-30 | 2014-06-11 | 海洋王照明科技股份有限公司 | Organic light-emitting device and preparation method thereof |
| CN103904246A (en) * | 2012-12-25 | 2014-07-02 | 海洋王照明科技股份有限公司 | Organic electroluminescent device and preparing method thereof |
| CN103904238A (en) * | 2012-12-25 | 2014-07-02 | 海洋王照明科技股份有限公司 | Organic light-emitting device and preparation method |
| CN103904249A (en) * | 2012-12-25 | 2014-07-02 | 海洋王照明科技股份有限公司 | Organic electroluminescent device and preparing method thereof |
| CN104078585A (en) * | 2013-03-27 | 2014-10-01 | 海洋王照明科技股份有限公司 | Organic light-emitting diode and preparation method thereof |
| CN104078591A (en) * | 2013-03-27 | 2014-10-01 | 海洋王照明科技股份有限公司 | Organic light-emitting diode and preparation method thereof |
| CN104078584A (en) * | 2013-03-27 | 2014-10-01 | 海洋王照明科技股份有限公司 | Organic electroluminescence device and preparation method thereof |
| CN104078589A (en) * | 2013-03-27 | 2014-10-01 | 海洋王照明科技股份有限公司 | Organic light-emitting diode and preparation method thereof |
| CN104078586A (en) * | 2013-03-27 | 2014-10-01 | 海洋王照明科技股份有限公司 | Organic light-emitting diode and preparation method thereof |
-
2002
- 2002-04-17 CN CN 02117224 patent/CN1452437A/en active Pending
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7427224B2 (en) | 2003-11-28 | 2008-09-23 | Optrex Corporation | Organic EL display and method for producing the same |
| US7560861B2 (en) | 2004-05-03 | 2009-07-14 | Lg Electronics Inc. | Organic electro-luminescence display device with an organic electro-luminescence array and fabricating method thereof |
| CN1694594B (en) * | 2004-05-03 | 2010-04-28 | Lg电子株式会社 | Organic electro-luminescence display device and fabricating method thereof |
| US7851994B2 (en) | 2004-05-03 | 2010-12-14 | Lg Electronics Inc. | Organic electro-luminescence display device with an organic electro-luminescence array and fabricating method thereof |
| CN100444699C (en) * | 2006-01-26 | 2008-12-17 | 友达光电股份有限公司 | Two-side display apparatus |
| CN102842681A (en) * | 2011-06-21 | 2012-12-26 | 海洋王照明科技股份有限公司 | Organic electroluminescent device and preparation method thereof |
| CN103378303A (en) * | 2012-04-23 | 2013-10-30 | 海洋王照明科技股份有限公司 | Organic light-emitting device and encapsulating method thereof |
| CN103855323A (en) * | 2012-11-30 | 2014-06-11 | 海洋王照明科技股份有限公司 | Organic light-emitting device and preparation method thereof |
| CN103904246A (en) * | 2012-12-25 | 2014-07-02 | 海洋王照明科技股份有限公司 | Organic electroluminescent device and preparing method thereof |
| CN103904238A (en) * | 2012-12-25 | 2014-07-02 | 海洋王照明科技股份有限公司 | Organic light-emitting device and preparation method |
| CN103904249A (en) * | 2012-12-25 | 2014-07-02 | 海洋王照明科技股份有限公司 | Organic electroluminescent device and preparing method thereof |
| CN103904238B (en) * | 2012-12-25 | 2016-04-13 | 海洋王照明科技股份有限公司 | Organic electroluminescence device and preparation method thereof |
| CN103904249B (en) * | 2012-12-25 | 2016-05-18 | 海洋王照明科技股份有限公司 | Organic electroluminescence device and preparation method thereof |
| CN104078585A (en) * | 2013-03-27 | 2014-10-01 | 海洋王照明科技股份有限公司 | Organic light-emitting diode and preparation method thereof |
| CN104078591A (en) * | 2013-03-27 | 2014-10-01 | 海洋王照明科技股份有限公司 | Organic light-emitting diode and preparation method thereof |
| CN104078584A (en) * | 2013-03-27 | 2014-10-01 | 海洋王照明科技股份有限公司 | Organic electroluminescence device and preparation method thereof |
| CN104078589A (en) * | 2013-03-27 | 2014-10-01 | 海洋王照明科技股份有限公司 | Organic light-emitting diode and preparation method thereof |
| CN104078586A (en) * | 2013-03-27 | 2014-10-01 | 海洋王照明科技股份有限公司 | Organic light-emitting diode and preparation method thereof |
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