CN102386210A - Organic electroluminescence display and fabrication method thereof - Google Patents
Organic electroluminescence display and fabrication method thereof Download PDFInfo
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- CN102386210A CN102386210A CN2011103383454A CN201110338345A CN102386210A CN 102386210 A CN102386210 A CN 102386210A CN 2011103383454 A CN2011103383454 A CN 2011103383454A CN 201110338345 A CN201110338345 A CN 201110338345A CN 102386210 A CN102386210 A CN 102386210A
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Abstract
The invention discloses an organic electroluminescence display; the organic electroluminescence display comprises an organic light emitting diode (OLED) substrate adhered by encapsulating glues, and a touch screen cover taken as a back cover; a touch screen electrode and an OLED electrode are connected with each other by conductive pastes coated on a touch screen electrode wire, and connected with respective drive ICs. The invention also discloses a fabrication method of the organic electroluminescence display, comprising a step of forming a touch screen electrode pattern on the touch screen cover and forming an OLED display module, an organic luminescence layer and an OLED electrode on the OLED substrate, a step of coating the conductive pastes on the touch screen electrode wire and connecting the touch screen electrode with the OLED electrode by the conductive pastes, a step of coating the encapsulating glues on the touch screen cover and adhering the touch screen cover to the substrate by the encapsulating glues, and a step of respectively connecting the touch screen electrode and the OLED electrode to the respective drive ICs thereof. The touch screen surface of the OLED display provided by the invention has high intensity, resistance to scratching and difficulty of damage; the reliability can be enhanced and the requirement for ultra-thinness can be met.
Description
Technical field
The present invention relates to the display technology field, relate in particular to display of organic electroluminescence of a kind of integrated capacitive touch screen and preparation method thereof.
Background technology
Display of organic electroluminescence; Be OLED (Organic Light-Emitting Diode); Be a kind of emerging flat-panel monitor,, be described as the display of new generation that can replace LCD (LCD) because it has plurality of advantages such as active illuminating, contrast is high, response speed is fast, frivolous.The principle of luminosity of OLED is between anode and negative electrode, to insert various functional layers, comprises electric charge injection layer, charge transport layer and luminescent layer etc., and through between electrode, applying suitable voltage, device just can be luminous.
The structural representation of OLED is as shown in Figure 1: it comprises parts such as oled substrate 11, anode 12, organic luminescence function layer 13, negative electrode 14, bonnet 15 and packaging plastic 16, and wherein: oled substrate (hereinafter to be referred as substrate) 11 is generally glass; Anode 12 is generally the ITO transparent conductive film; Organic luminescence function layer 13 comprises hole injection layer, hole transmission layer, luminescent layer, electron transfer layer, electron injecting layer; Negative electrode 14 is generally Al, Ag, Mg or its alloy; Bonnet 15 comprises glass back cover and metal back cover; Packaging plastic 16 is generally UV glue.Concrete connected mode is: fit through packaging plastic 16 encapsulation between oled substrate 11 and the bonnet 15, bore wherein is provided with negative electrode 12 and negative electrode 14, and interpolar then inserts organic light emitting functional layer 13., negative electrode 12 make device luminous when switching on negative electrode 14.This OLED is divided into two kinds according to the bright dipping mode, and wherein: light sends from the oled substrate face and is end emission type; Light sends from back capping and is top emission type.
Touch input device such as touch-screen,, reaction speed sturdy and durable because of having be fast, save the space, be easy to advantage such as interchanges, be considered to the simplest at present, conveniently, natural input equipment, be used in more and more widely on the various portable sets.Can be that the integrated of touch-screen and display of organic electroluminescence will become the market mainstream with predicting.But also there is certain deficiency in the integrated products of existing touch-screen and OLED, is summarized as follows.
In the prior art, the general structure of touch-screen is to form the touch screen electrode pattern on the base material, above protective mulch again.Shown in Fig. 2 a, Fig. 2 b, represent two kinds of integrated OLED structures of touch-screen, wherein: Fig. 2 a is the end emitting OLED of integrated touch screen, the touch screen electrode 23 that is provided with electrode pattern and touch screen protective film 24 are arranged on the outside of bonnet 22; Fig. 2 b is the top-emitting OLED of integrated touch screen, its touch screen electrode 23 and 24 outsides that are arranged on oled substrate 21 of touch screen protective film.In these two kinds of structures; Because touch screen electrode 23 and touch screen protective film 24 all are arranged on the outside of OLED; Have more defective, mainly show as two aspects: on the one hand, touch screen electrode 23 is arranged on the outside with touch screen protective film 24; Cause scuffing, breakage easily, have influence on the reliability of touch-screen; On the other hand, oled substrate 21 and the extra thickness that has increased touch screen electrode 23 and touch screen protective film 24 of box body that bonnet 22 is constituted are unfavorable for the requirement of ultra-thinization of device.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of display of organic electroluminescence and preparation method thereof, help improving product reliability, preferably the requirement of ultra-thinization of appropriate products.
For solving above technical problem; Technical scheme provided by the invention is: a kind of display of organic electroluminescence; Comprise the oled substrate and the bonnet of fitting, be formed with OLED display assembly, organic luminescence function layer and OLED electrode on this oled substrate, be formed with the touch screen electrode pattern on this bonnet through packaging plastic; This bonnet is the touch-screen cover; This touch screen electrode and this OLED electrode are connected through the conductive paste that scribbles on the touch screen electrode lead-in wire, and this touch screen electrode is connected respectively on the drive IC separately with this OLED electrode, launch the OLED display with the top that forms an integrated touch screen.
More excellent ground, touch-screen is capacitive touch screen or resistive touch screen.
More excellent ground, touch screen electrode is single-layer electrodes or two-layer electrode.
More excellent ground, the touch-screen cover is the glass cover.
More excellent ground, packaging plastic is an epoxide-resin glue.
More excellent ground, this touch screen electrode is drawn in together on one side with this OLED electrode; Perhaps, this touch screen electrode is drawn on one side, and this OLED electrode is drawn in another side.
On this basis, the present invention is also corresponding to provide a kind of display of organic electroluminescence manufacture method, comprising:
Cover formation touch screen electrode pattern at touch screen panel, and on oled substrate, form OLED display assembly, organic luminescence function layer and OLED electrode;
On the touch screen electrode lead-in wire, be coated with conductive paste, touch screen electrode be connected with the OLED electrode through conductive paste;
Cover at touch screen panel and to be coated with packaging plastic, the touch-screen cover is fitted on the oled substrate through packaging plastic;
Touch screen electrode and OLED electrode are connected respectively on the drive IC separately, form the top emission OLED display of integrated touch screen.
More excellent ground through vapor deposition, forms organic light emitting functional layer and transparent OLED electrode on OLED.
More excellent ground is connected respectively to touch screen electrode and OLED electrode on the drive IC separately through FPC.
Yi Bian more excellent ground is simultaneously from drawing touch screen electrode and OLED electrode together; Perhaps, Yi Bian, draw the OLED electrode from another side from drawing touch screen electrode.
Compared with prior art, the OLED of the integrated touch screen that obtains through manufacture method of the present invention mainly comprises following advantage: (1) touch screen electrode is positioned at the organic layer box body, and touch-screen intensity is high, damage resistant, and cracky has not improved the reliability of touch-screen; (2) the double bonnet of doing of Cover Lens, device is thinner; (3) save the touch screen protective film, cost of manufacture is lower, and technology is simpler; (4) be top emission OLED, efficient is higher, and the color colorimetric purity is higher.
Description of drawings
Fig. 1 is existing common display of organic electroluminescence sketch map;
Fig. 2 a is the end emitting OLED display of existing integrated touch screen;
Fig. 2 b is the top-emitting OLED display of existing integrated touch screen;
Fig. 3 is the sketch map of display of organic electroluminescence of the present invention, is a kind of top-emitting OLED display of integrated touch screen, wherein with Cover Lens as bonnet;
Fig. 4 is the manufacture method flow chart of display of organic electroluminescence of the present invention.
For simplicity, the relevant Reference numeral among Fig. 1～Fig. 4 is pressed following mode layout: the sequence number of the 1st bit digital presentation graphs, the 2nd bit digital are represented parts sequence number in the figure.For example, first parts among first figure of 11 expressions; The 3rd parts among second figure of 23 expressions; Or the like.Particularly, the relevant Reference numeral implication among Fig. 1～Fig. 4 is following:
11---oled substrate; 12---anode; 13---the organic luminescence function layer; 14---negative electrode; 15---bonnet; 16---packaging plastic.
21---oled substrate; 22---bonnet; 23---touch screen electrode; 24---the touch screen protective film.
31---oled substrate; 32---the touch-screen cover; 33---touch screen electrode; 34---conductive paste; 35---the OLED electrode; 36---the touch screen electrode lead-in wire.
Embodiment
A preferred embodiment of the present invention provides a kind of integrated OLED display of touch-screen, relates in particular to the top-emitting OLED of a kind of Cover Lens (cover) with touch-screen as bonnet.This Cover Lens is preferably the glass cover; When touch-screen is big, can select material for use is toughened glass; The main effect that is play is exactly as protective layer, and as for the prior art of diaphragm, Cover lens performance in every respect was all more superior with respect to former employing PET film for it.
For forming above-mentioned OLED display; The basic technical scheme of the present invention's one preferred embodiment manufacture method is: on Cover Lens, make the touch screen electrode pattern; Then it is encapsulated as bonnet and oled substrate applying; Form the OLED display of an integrated touch screen, be preferably the top-emitting OLED display.This method mainly adopts following processing step:
1, on Cover Lens, forms touchscreen pattern;
2, on oled substrate, form the assembly of OLED, comprise electrode, TFT (Thin Film Transistor TFT), insulating barrier, insulated column etc.;
3, vapor deposition organic luminescence function layer and transparent OLED electrode on oled substrate;
4, on the touch screen electrode lead-in wire, be coated with conductive paste, Cover Lens is coated with packaging plastic;
5, oled substrate and Cover Lens encapsulation are fitted, touch screen electrode is connected with the OLED electrode through conductive paste;
6, respectively the electrode of OLED electrode and touch-screen is received on the drive IC (integrated circuit) separately through FPC (Flex Print Circuit Board, FPC).Wherein, two drive IC can be respectively installed on the oled substrate, also can be installed on the FPC;
7, form the top emission OLED display of integrated touch screen.
The OLED of the integrated touch screen that obtains through above-mentioned manufacture method includes but are not limited to following advantage:
(1) touch screen electrode is positioned at the organic layer zoarium, high, the damage resistant of touch-screen intensity, and cracky has not improved the reliability of touch-screen;
(2) the double bonnet of doing of Cover Lens, device is thinner;
(3) owing to save the touch screen protective film, cost is lower, and technology is simpler;
(4) be top emission OLED, efficient is higher, and the color colorimetric purity is higher.
In order to make those skilled in the art understand technical scheme of the present invention better, the present invention is done further detailed description below in conjunction with accompanying drawing and specific embodiment.
Referring to Fig. 3, a preferred embodiment of expression display of organic electroluminescence of the present invention.This display of organic electroluminescence comprises the oled substrate 31 and the bonnet of fitting through packaging plastic (like epoxide-resin glue) 34: be formed with OLED display assembly, organic luminescence function layer and OLED electrode on the oled substrate 31 equally; Be formed with the electrode pattern of capacitive touch screen or resistive touch screen on the bonnet; The touch-screen cover 32 that this bonnet is made for the toughened glass material; And this individual layer or double-deck touch screen electrode 33 are connected through the conductive paste 34 that scribbles on the touch screen electrode lead-in wire 36 with OLED electrode 35; These two electrodes then are connected on the drive IC that is installed in separately on the oled substrate 31 through FPC respectively, have just formed the top emission OLED display of an integrated touch screen thus.
Be pointed out that in passing the touch screen electrode 33 in the present embodiment has different lead-out modes with OLED electrode 35: for example, both draw in together on one side simultaneously; Perhaps, touch screen electrode 33 is drawn on one side, and OLED electrode 35 is drawn in another side; Concrete visual organ spare layout requires to select to get final product, and repeats no more.
On the basis that the structure to above-mentioned display of organic electroluminescence is described in detail, below its manufacture method is briefly described.
Referring to Fig. 4, the manufacturing process steps of expression display of organic electroluminescence of the present invention specifically comprises:
S401, on Cover Lens, form the touch screen electrode pattern.Touch-screen is divided into resistive touch screen and capacitive touch screen, and used in the present invention is capacitive touch screen, includes but not limited to individual layer and two-layer electrode mode.
S402, on oled substrate, form the assembly of OLED display, comprise electrode, TFT, insulating barrier, insulated column etc.This step is identical with the forming process of existing OLED, repeats no more.
S403, on oled substrate vapor deposition organic luminescence function layer and transparent OLED electrode.This step is identical with the forming process of existing OLED, specifically can be with reference to relevant document.
Obviously, among step S401～S403, cover the step that forms the touch screen electrode pattern at touch screen panel, the step that on oled substrate, forms OLED display assembly, organic luminescence function layer and OLED electrode does not have the sequencing requirement, it often can carry out simultaneously.
S404, on touch screen electrode lead-in wire, be coated with conductive paste, Cover Lens is coated with packaging plastic.Conductive paste can be connected to drive IC through the OLED contact conductor through connecting the electrode between bonnet and the oled substrate; Cover Lens uses as bonnet, applies packaging plastic so that bonding with oled substrate, and packaging plastic includes but not limited to various epoxide-resin glues.
S405, oled substrate and Cover Lens encapsulation is fitted, touch screen electrode is connected with the OLED electrode through conductive paste.Conductive paste can be connected to drive IC through the OLED contact conductor through connecting the electrode between bonnet and the oled substrate.
S406, respectively the electrode of oled substrate and the electrode of touch-screen are received on the drive IC separately through FPC.Wherein, the electrode of OLED electrode and touch-screen is according to the needs of deisgn product, Yi Bian can also can draw from both sides respectively from drawing.
The top emission OLED display of S407, formation integrated touch screen.
OLED display of the present invention has touch screen function, and touch screen surface intensity is high, damage resistant, and cracky does not help improving product reliability; And product is thinner, preferably the requirement of ultra-thinization of appropriate products; Its processing step is simpler, and cost of manufacture is lower, thereby has market prospects preferably.
Only be preferred implementation of the present invention below, should be pointed out that above-mentioned preferred implementation should not be regarded as limitation of the present invention, protection scope of the present invention should be as the criterion with claim institute restricted portion.For those skilled in the art, do not breaking away from the spirit and scope of the present invention, can also make some improvement and retouching, these improvement and retouching also should be regarded as protection scope of the present invention.
Claims (10)
1. display of organic electroluminescence; Comprise the oled substrate and the bonnet of fitting through packaging plastic; Be formed with OLED display assembly, organic luminescence function layer and OLED electrode on this oled substrate, be formed with the touch screen electrode pattern on this bonnet, it is characterized in that; This bonnet is the touch-screen cover; This touch screen electrode and this OLED electrode are connected through the conductive paste that scribbles on the touch screen electrode lead-in wire, and this touch screen electrode is connected respectively on the drive IC separately with this OLED electrode, launch the OLED display with the top that forms an integrated touch screen.
2. display of organic electroluminescence as claimed in claim 1 is characterized in that, touch-screen is capacitive touch screen or resistive touch screen.
3. display of organic electroluminescence as claimed in claim 1 is characterized in that, touch screen electrode is single-layer electrodes or two-layer electrode.
4. display of organic electroluminescence as claimed in claim 1 is characterized in that, the touch-screen cover is the glass cover.
5. display of organic electroluminescence as claimed in claim 1 is characterized in that, packaging plastic is an epoxide-resin glue.
6. display of organic electroluminescence as claimed in claim 1 is characterized in that, this touch screen electrode is drawn in together on one side with this OLED electrode; Perhaps, this touch screen electrode is drawn on one side, and this OLED electrode is drawn in another side.
7. a display of organic electroluminescence manufacture method is characterized in that, comprising:
Cover formation touch screen electrode pattern at touch screen panel, and on oled substrate, form OLED display assembly, organic luminescence function layer and OLED electrode;
On the touch screen electrode lead-in wire, be coated with conductive paste, touch screen electrode be connected with the OLED electrode through conductive paste;
Cover at touch screen panel and to be coated with packaging plastic, the touch-screen cover is fitted on the oled substrate through packaging plastic;
Touch screen electrode and OLED electrode are connected respectively on the drive IC separately, form the top emission OLED display of integrated touch screen.
8. display of organic electroluminescence manufacture method as claimed in claim 7 is characterized in that, through vapor deposition, on OLED, forms organic light emitting functional layer and transparent OLED electrode.
9. display of organic electroluminescence manufacture method as claimed in claim 7 is characterized in that, through FPC touch screen electrode and OLED electrode is connected respectively on the drive IC separately.
10. display of organic electroluminescence manufacture method as claimed in claim 7 is characterized in that, Yi Bian simultaneously from drawing touch screen electrode and OLED electrode together; Perhaps, Yi Bian, draw the OLED electrode from another side from drawing touch screen electrode.
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| CN2011103383454A CN102386210A (en) | 2011-10-31 | 2011-10-31 | Organic electroluminescence display and fabrication method thereof |
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| CN2011103383454A CN102386210A (en) | 2011-10-31 | 2011-10-31 | Organic electroluminescence display and fabrication method thereof |
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| CN103594489A (en) * | 2013-11-29 | 2014-02-19 | 信利半导体有限公司 | Organic light-emitting diode (OLED) display device with touch control function |
| CN103777798A (en) * | 2012-10-23 | 2014-05-07 | 瀚宇彩晶股份有限公司 | Organic light emitting diode touch display panel |
| DE102013105003A1 (en) * | 2013-05-15 | 2014-11-20 | Osram Opto Semiconductors Gmbh | Organic opto-electronic component |
| CN104465703A (en) * | 2014-11-21 | 2015-03-25 | 上海天马有机发光显示技术有限公司 | Display panel, manufacturing method of display panel and display device |
| WO2016206055A1 (en) * | 2015-06-25 | 2016-12-29 | 深圳市柔宇科技有限公司 | Method for manufacturing touchscreen display |
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| US20100026657A1 (en) * | 2001-04-27 | 2010-02-04 | Palm, Inc. | Display with visually homogeneous border |
| CN101059738A (en) * | 2006-04-20 | 2007-10-24 | 铼宝科技股份有限公司 | Transparent touch screen with upward-emitting organic light-emitting diodes |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103777798A (en) * | 2012-10-23 | 2014-05-07 | 瀚宇彩晶股份有限公司 | Organic light emitting diode touch display panel |
| CN103777798B (en) * | 2012-10-23 | 2016-09-07 | 瀚宇彩晶股份有限公司 | Organic Light Emitting Diode Touch Display Panel |
| DE102013105003A1 (en) * | 2013-05-15 | 2014-11-20 | Osram Opto Semiconductors Gmbh | Organic opto-electronic component |
| US9735391B2 (en) | 2013-05-15 | 2017-08-15 | Osram Oled Gmbh | Organic optoelectronic component |
| CN103594489A (en) * | 2013-11-29 | 2014-02-19 | 信利半导体有限公司 | Organic light-emitting diode (OLED) display device with touch control function |
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| CN104465703A (en) * | 2014-11-21 | 2015-03-25 | 上海天马有机发光显示技术有限公司 | Display panel, manufacturing method of display panel and display device |
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| CN104465703B (en) * | 2014-11-21 | 2019-02-12 | 上海天马有机发光显示技术有限公司 | A kind of display panel and its manufacturing method and display device |
| WO2016206055A1 (en) * | 2015-06-25 | 2016-12-29 | 深圳市柔宇科技有限公司 | Method for manufacturing touchscreen display |
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Application publication date: 20120321 |