CN102723445A - OLED (organic light-emitting diode) display unit and OLED spliced display screen with same - Google Patents

OLED (organic light-emitting diode) display unit and OLED spliced display screen with same Download PDF

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Publication number
CN102723445A
CN102723445A CN2012102241978A CN201210224197A CN102723445A CN 102723445 A CN102723445 A CN 102723445A CN 2012102241978 A CN2012102241978 A CN 2012102241978A CN 201210224197 A CN201210224197 A CN 201210224197A CN 102723445 A CN102723445 A CN 102723445A
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China
Prior art keywords
substrate
oled
display unit
layer
conducting film
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Pending
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CN2012102241978A
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Chinese (zh)
Inventor
彭晓林
匡友元
孙婷
黄永峰
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Vtron Technologies Ltd
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Vtron Technologies Ltd
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Priority to CN2012102241978A priority Critical patent/CN102723445A/en
Publication of CN102723445A publication Critical patent/CN102723445A/en
Pending legal-status Critical Current

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Abstract

The invention relates to an OLED (organic light-emitting diode) display technology and specifically relates to an OLED display unit and an OLED spliced display screen with the same. The OLED display unit comprises a substrate and an OLED module arranged on the front surface of the substrate, wherein a packaging layer is arranged on the periphery and the front surface of the OLED module, conductive films are plated on the front surface and the peripheral side walls of the substrate, the conductive film on any one side wall of the substrate is connected with an anode in the OLED module, the conductive film on another side wall of the substrate is connected with a cathode of the OLED module, an anode leading wire and a cathode leading wire are respectively led out of the conductive films on another two side walls of the substrate and connected with an external circuit, and the two side walls of the substrate are externally connected with binding regions. According to the OLED display unit disclosed by the invention, the binding regions of an OLED panel are transferred onto the side walls of the substrate through a packaging surface of the OLED module, so that a non-luminous side frame region of a device is reduced, and the splicing effect of the OLED spliced display screen is optimized.

Description

OLED display unit and with the OLED mosaic display screen of this display unit
Technical field
The present invention relates to Organic Light Emitting Diode (OLED) Display Technique, be specifically related to a kind of OLED display unit and with the OLED mosaic display screen of this display unit.
Background technology
All solid state, ultra-thin, no visual angle restriction that OLED has, response fast, working temperature be wide, be easy to realize flexible the demonstration and advantages such as 3D demonstrations, and it is one of technological to be considered to the most promising novel FPD.Can manufacture experimently maximum sized OLED screen at present below 55 cun, the OLED screen that commercialization is put on market only is confined to 5-10 cun, and size is less, and reason is to be to be limited by manufacturing equipment and manufacture craft on the one hand, is limited by high raw material on the other hand.Therefore, how to utilize existing size oled panel further to assemble and be spliced into large-screen splicing wall, become the important topic of technical field for this reason to satisfy the requirement of large scale display.
According to the requirement of drive circuit and production technology, oled panel needs in the viewing area to keep certain space all around, and the marginal portion of panel can't display image.Like Fig. 1; Existing OLED luminescent panel is made up of luminous component 8, UV packaging plastic frame 1 and binding zone 2; As shown in Figure 2 particularly, it is made up of substrate 7, anode layer 6, organic layer 51 (cavitation layer-luminescent layer-electronic shell), cathode layer 4, glass packaging bonnet 31.The OLED luminescent panel comprises light-emitting zone and non-luminous frame region, and wherein non-luminous frame region comprises UV glue frame zone 1 that is used for device sealing and the binding zone 2 that is used for the device circuitry wiring.As shown in Figure 3,, oled panel can stay the splicing slit when being spliced into large-screen, and non-luminous frame region can't display image, causes the discontinuous of screen-picture, influences viewing effect.A lot of panel manufacturers are devoted to improve manufacturing process, yet only rely on the improvement of manufacturing process, can only piece be narrowed as far as possible, and can't accomplish seamless spliced effect.Reduce as far as possible even striving direction that to reach complete removal of images piece be OLED large-screen splicing technical research.
Summary of the invention
The technical problem that the present invention solves is the deficiency that overcomes prior art, and a kind of OLED display unit of the slit that forms can reduce to splice the time is provided.
The present invention also provides a kind of piece that forms can reduce to splice the time, from visually realizing seamless spliced OLED mosaic display screen.
For solving the problems of the technologies described above, the technical scheme of first goal of the invention of the present invention is following:
A kind of OLED display unit; Comprise substrate and be arranged on the OLED module of substrate front side; The OLED module around and the front be provided with encapsulated layer; On substrate front side and sidewall all around, be coated with conducting film, wherein appoint and get a conducting film on the substrate sidewall and be connected, appoint a conducting film of getting on another substrate sidewall to be connected with the negative electrode of OLED module with anode in the OLED module; Conducting film from two substrate sidewalls is drawn anode tap respectively and is connected external circuit with cathode leg, in two the external bindings of substrate sidewall zones.The present invention transfers to the binding zone of anode, cathode leg on the substrate sidewall from the encapsulating face of OLED module, and the only surplus encapsulated layer in the edge of whole OLED display unit has significantly reduced the non-luminous frame region of device.
As a kind of preferred version, the conducting film of substrate sidewall extends to substrate back respectively, and anode tap and cathode leg are drawn from the conducting film of substrate back respectively, in the external binding of substrate back zone.Conducting film is extended to substrate back; The binding zone of whole display unit is transferred to substrate back from the encapsulating face of OLED module; The OLED display unit is from the positive bright dipping of OLED module; When reducing the non-luminous frame region of device, also increase aperture opening ratio, increase the brightness of OLED display unit.
As a kind of preferred version; The OLED module is made up of anode layer, organic layer and the cathode layer of range upon range of setting; Anode layer is arranged on the substrate front side; Appoint corresponding respectively anode layer, the cathode layer of connecting of the conducting film of getting two substrate sidewalls, on the conducting film of two substrate sidewalls, form anode and negative electrode respectively.
As another kind of preferred version; The OLED module is made up of anode layer, organic layer and the cathode layer of range upon range of setting; Cathode layer is arranged on the substrate front side; Appoint corresponding respectively anode layer, the cathode layer of connecting of the conducting film of getting two substrate sidewalls, on the conducting film of two substrate sidewalls, form anode and negative electrode respectively.The OLED module adopts inverted structure, and each rete production order and conventional reversed in order are made cathode layer earlier on substrate, do organic layer on the cathode layer again, on organic layer, make anode layer again, and inverted structure has changed the light direction of OLED display unit.
As a kind of preferred version, said encapsulated layer comprises encapsulation bonnet and packaging plastic frame, and the encapsulation bonnet is arranged on the front of OLED module, the packaging plastic frame be arranged on the OLED module around, encapsulation bonnet and packaging plastic frame seal and join.
As further preferred version, said encapsulation bonnet is a clear glass encapsulation bonnet.
As a kind of preferred version, said encapsulated layer is to be arranged on around the OLED module and positive transparent thin film layer.The employing thin-film package is handled, because thin layer is frivolous, thickness generally is no more than 3 μ m, and its width is far smaller than UV packaging plastic frame, therefore can reduce OLED display unit packaging area greatly, and non-luminous frame is further reduced.
As a kind of preferred version, the substrate sidewall is set to male and fomale(M&F), and the conducting film on the substrate sidewall is the rete through patterned.The oled substrate substrate is carried out physics or chemical treatment, make the substrate sidewall have definite shape, form male and fomale(M&F), be convenient to make conductive film layer.
As a kind of preferred version, the positive back side of said substrate is etched surface.With whole etching of substrate back, make it have good light transmittance.
The technical scheme of second goal of the invention of the present invention is following:
A kind of OLED mosaic display screen comprises above-mentioned described OLED display unit.
Compared with prior art, the beneficial effect of technical scheme of the present invention is:
(1) the present invention transfers to substrate sidewall or substrate back with the binding zone of OLED luminescent panel by the encapsulating face of OLED module; Make that the only surplus packaging plastic frame in edge of whole OLED display unit is regional; Significantly reduced the non-luminous frame region of device; The OLED mosaic display screen that utilizes this OLED display unit to be spliced to form has littler piece, has optimized the splicing effect of OLED mosaic display screen.
(2) the present invention adopts extremely narrow thin layer to substitute traditional packaging plastic frame as protective layer, has further reduced the non-luminous frame region of device, thereby has obtained minimum piece, from the screen display effect that realizes that visually OLED is seamless spliced.
(3) the OLED module among the present invention can adopt conventional structure and inverted structure, and inverted structure has changed light direction, has increased aperture opening ratio, has increased the brightness of OLED luminescent panel.
Description of drawings
Fig. 1 is the structural representation of OLED luminescent panel in the prior art;
Fig. 2 is an OLED luminescent panel stepped construction sketch map in the prior art;
Fig. 3 is the spliced piece sketch map of OLED display unit in the prior art;
Fig. 4 is the enlarged diagram of Fig. 3 piece;
Fig. 5 is the structural representation of the embodiment of the invention 1;
Fig. 6 is the structural representation of the embodiment of the invention 2;
Fig. 7 is the structural representation that the embodiment of the invention 3 adopts the encapsulation of encapsulation bonnet;
Fig. 8 is the structural representation that the embodiment of the invention 3 adopts thin-film package;
Fig. 9 is the vertical view of Fig. 6 and Fig. 7;
Figure 10 is the structural representation of OLED mosaic display screen among the present invention;
Figure 11 is the enlarged diagram of piece among Figure 10.
1 packaging plastic frame; 2 bind the zone; 3 encapsulation bonnets; 4 cathode layers; 5 organic layers; 6 anode layers; 7 substrates; 71 substrate sidewalls; 72 substrate backs; 8 luminous components; 10 thin layers.
Embodiment
Below in conjunction with accompanying drawing and embodiment technical scheme of the present invention is done further explanation.
Embodiment 1
As shown in Figure 5, be the structural representation of a kind of OLED display unit in the present embodiment; A kind of OLED display unit comprises substrate 7, OLED module, encapsulated layer, and the OLED module is made up of range upon range of anode layer 6, organic layer 5 and the cathode layer 4 of being provided with, encapsulated layer be arranged on the OLED module around and the front on.
Wherein anode layer 6, organic layer 5, cathode layer 4 are successively set on the substrate 7, and promptly the anode layer 6 of OLED module is arranged on substrate 7 fronts, and the anode layer front is provided with organic layer 5, and organic layer 5 fronts are provided with cathode layer 4.
On substrate 7 fronts and sidewall 71 all around, be coated with conducting film; Wherein appoint and get a conducting film on the substrate sidewall 71 and be connected with anode in the OLED module; Appoint the conducting film of getting on another substrate sidewall 71 to be connected with the negative electrode of OLED module; Conducting film from two substrate sidewalls 71 is drawn anode tap respectively and is connected external circuit with cathode leg, in two the external bindings of substrate sidewall zones 2.
As shown in Figure 2, in traditional OLED display unit, it binds the encapsulating face that zone 2 is positioned at the OLED module; And this embodiment is transferred to the binding of OLED display unit zone 2 on the substrate sidewall 71.
Substrate sidewall 71 is set to male and fomale(M&F).During making, oled substrate 7 is carried out physics or chemical treatment, make substrate sidewall 71 have certain shape, can be irregularly shaped for circular arc, ellipse, triangle, polygon etc., be convenient on substrate sidewall 71, make conductive film layer; Then to the substrate 7 positive conducting films of making; Conducting film can also can be non-metallic layer for metal level; Make substrate sidewall 71 adhere to upper conductive film layer anode simultaneously; After substrate front side is made conductive film layer, substrate front side is carried out one photoetching treatment, utilizes mask plate exposure, etching, isolated mutual Uncrossed negative electrode and anode, again the conducting film on the substrate sidewall 71 is done patterned; Conducting film from the substrate sidewall 71 is drawn anode, cathode leg connects external circuit, and then the binding of OLED display unit zone 2 is transferred on the substrate sidewall 71 from OLED module package face.The OLED display unit be through anode layer 6 by the back side bright dipping of substrate 7, therefore,, whole etching in the positive back side of substrate 71 formed etched surface for the exiting surface that makes substrate 7 has good light transmittance.Make conventional OLED device on this basis, do anode layer 6 earlier, vapor deposition organic layer 5 on anode layer 6 is done cathode layer 4 at last more again, carries out encapsulation process at last.
The encapsulation of OLED display unit can be adopted the encapsulation process of encapsulation bonnet 3, also can adopt thin-film package to handle.
When adopting the packaged type of encapsulation bonnet 3; Encapsulated layer comprises encapsulation bonnet 3 and packaging plastic frame 1; Encapsulation bonnet 3 is clear glass encapsulation bonnet, and packaging plastic frame 1 is a UV packaging plastic frame, and encapsulation bonnet 3 is arranged on the front of OLED module; Packaging plastic frame 1 be arranged on the OLED module around, encapsulation bonnet 3 with the packaging plastic frame 1 sealing join.As shown in Figure 9; After the present invention is transferred to substrate sidewall 71 with the binding of OLED display unit zone 2; The edge of OLED display unit not luminous component only stays packaging plastic frame 1, has reduced the non-luminous frame region of device greatly, can optimize the splicing effect of OLED mosaic display screen when being used to splice.
In order further to reduce the not area of luminous component of OLED display unit edge, the encapsulation of OLED display unit can be adopted the transparent membrane encapsulation.Particularly, encapsulated layer is a transparent thin film layer 10, the OLED module around and the back side all enclose thin layer 10.The employing thin-film package is handled, because thin layer 10 is frivolous, thickness generally is no more than 3 μ m, and its width is far smaller than UV packaging plastic frame 1, therefore, can reduce OLED display unit packaging area greatly, and non-luminous frame is further reduced.
 
Embodiment 2
As shown in Figure 6; Present embodiment is similar with embodiment 1; Different is that the OLED module adopts inverted structure, and wherein cathode layer 4, organic layer 5, anode layer 6 are successively set on the substrate 7, and promptly cathode layer 4 back sides of OLED module are arranged on the front of substrate 7; Cathode layer 4 fronts are provided with organic layer 5, and organic layer 5 fronts are provided with anode layer 6.The inverted structure of OLED module has changed the light direction of OLED display unit; The image of OLED display unit sees through anode layer 6 positive encapsulated layers from anode layer 6 bright dippings and shows; This bright dipping mode has increased aperture opening ratio, thereby has increased the brightness of OLED display unit.
 
Embodiment 3
As shown in Figure 7, be the structural representation of a kind of OLED display unit in the present embodiment; A kind of OLED display unit comprises substrate 7, OLED module, encapsulated layer, and the OLED module is made up of anode layer 6, organic layer 5 and the cathode layer 4 of range upon range of setting, encapsulated layer be arranged on the OLED module around and positive.
Wherein the OLED module adopts inverted structure; Cathode layer 4, organic layer 5, anode layer 6 are successively set on the substrate 7, and promptly cathode layer 4 back sides of OLED module are arranged on substrate 7 fronts, and cathode layer 4 fronts are provided with organic layer 5; Organic layer 5 fronts are provided with anode layer 6, and anode layer 6 fronts are provided with encapsulated layer.
On substrate 7 fronts and sidewall 71 all around, be coated with conducting film; Wherein appoint and get a conducting film on the substrate sidewall 71 and be connected with anode in the OLED module; Appoint the conducting film of getting on another substrate sidewall 71 to be connected with the negative electrode of OLED module; The conducting film of substrate sidewall 71 extends to substrate back 72 respectively, and anode tap and cathode leg are drawn from the conducting film of substrate back 72 respectively, in substrate back 72 external binding zones 2.As shown in Figure 7, this embodiment is transferred to the binding zone 2 of OLED display unit on the substrate back 72.
Substrate sidewall 71 is set is male and fomale(M&F).During making, oled substrate 7 is carried out physics or chemical treatment, make substrate sidewall 71 have certain shape, can be irregularly shaped for circular arc, ellipse, triangle, polygon etc., be convenient on substrate sidewall 72, make conducting film; Then to substrate 7 two-sided making conducting films; The conducting film on two sides can also can be non-metallic layer for metal level; Make substrate sidewall 71 adhere to upper conductive film simultaneously; Behind two-sided making conductive film layer to substrate, substrate front side is carried out one photoetching treatment, utilizes mask plate exposure, etching, isolated mutual Uncrossed negative electrode and anode, again patterned is done at the back side of conducting film on the substrate sidewall 71 and conducting film; The conducting film of substrate back 72 is drawn anode, cathode leg respectively and is connected external circuit, and then the binding of OLED display unit zone 2 is transferred on the substrate back 72 from OLED module package face.Make the OLED device on this basis, do cathode layer 4 earlier, vapor deposition organic layer 5 on cathode layer 4 is done anode layer 6 at last more again, carries out encapsulation process at last.The image of OLED display unit sees through anode layer 6 positive encapsulated layers from anode layer 6 bright dippings and shows.
The encapsulation of OLED display unit can be adopted the encapsulation process of encapsulation bonnet 3, also can adopt thin-film package to handle.
When adopting the packaged type of encapsulation bonnet 3; Encapsulated layer comprises encapsulation bonnet 3 and packaging plastic frame 1; Encapsulation bonnet 3 is clear glass encapsulation bonnet, and packaging plastic frame 1 is a UV packaging plastic frame, and encapsulation bonnet 3 is arranged on the front of OLED module; Packaging plastic frame 1 be arranged on the OLED module around, encapsulation bonnet 3 with the packaging plastic frame 1 sealing join.As shown in Figure 9; After the present invention is transferred to substrate back 72 with the binding of OLED display unit zone 2; The edge of OLED display unit not luminous component only stays packaging plastic frame 1, has reduced the non-luminous frame region of device greatly, can optimize the splicing effect of OLED mosaic display screen when being used to splice.
As shown in Figure 8, in order further to reduce the not area of luminous component of OLED display unit edge, the encapsulation of OLED display unit can be adopted the transparent membrane encapsulation, and transparent membrane adopts macromolecular material to process.Particularly, encapsulated layer is a transparent thin film layer, the OLED module around and the front all enclose transparent thin film layer.Adopt the transparent membrane encapsulation process, because transparent thin film layer is frivolous, thickness generally is no more than 3 μ m, and its width is far smaller than UV packaging plastic frame 1, therefore, can reduce OLED display unit packaging area greatly, and non-luminous frame is further reduced.
In the present embodiment, the structure of OLED module can adopt conventional structure equally, and the image of this OLED display unit sees through anode layer 6 positive encapsulated layers from anode layer 6 bright dippings and shows.
Embodiment 4
Shown in Figure 10 and 11; A kind of OLED splicing display unit in the present embodiment; Adopt above-mentioned described OLED display unit to be spliced to form large-screen; Make the OLED luminescent panel only form, thereby reduce the not luminous component on the OLED luminescent panel, improve the splicing effect of OLED mosaic display screen by the luminous component 8 and the edge of packaging plastic frame 1 or thin layer protection.

Claims (10)

1. OLED display unit; It is characterized in that; Comprise substrate and be arranged on the OLED module of substrate front side, around the OLED module and the front be provided with encapsulated layer, in substrate front side be coated with conducting film on the sidewall all around; Wherein appoint and get a conducting film on the substrate sidewall and be connected with anode in the OLED module; Appoint the conducting film get on another substrate sidewall to be connected with the negative electrode of OLED module, the conducting film from two substrate sidewalls is drawn anode tap respectively and is connected external circuit with cathode leg, and is regional two external bindings of substrate sidewall.
2. OLED display unit according to claim 1 is characterized in that the conducting film of substrate sidewall extends to substrate back respectively, and anode tap and cathode leg are drawn from the conducting film of substrate back respectively, in the external binding of substrate back zone.
3. OLED display unit according to claim 1 and 2; It is characterized in that; The OLED module is made up of anode layer, organic layer and the cathode layer of range upon range of setting; Anode layer is arranged on the substrate front side, appoints corresponding respectively anode layer, the cathode layer of connecting of the conducting film of getting two substrate sidewalls, on the conducting film of two substrate sidewalls, forms anode and negative electrode respectively.
4. OLED display unit according to claim 1 and 2; It is characterized in that; The OLED module is made up of anode layer, organic layer and the cathode layer of range upon range of setting; Cathode layer is arranged on the substrate front side, appoints corresponding respectively anode layer, the cathode layer of connecting of the conducting film of getting two substrate sidewalls, on the conducting film of two substrate sidewalls, forms anode and negative electrode respectively.
5. OLED display unit according to claim 1 and 2; It is characterized in that said encapsulated layer comprises encapsulation bonnet and packaging plastic frame, the encapsulation bonnet is arranged on the front of OLED module; The packaging plastic frame be arranged on the OLED module around, encapsulation bonnet and packaging plastic frame seal and join.
6. OLED display unit according to claim 5 is characterized in that, said encapsulation bonnet is a clear glass encapsulation bonnet.
7. OLED display unit according to claim 1 and 2 is characterized in that, said encapsulated layer is to be arranged on around the OLED module and positive transparent thin film layer.
8. OLED display unit according to claim 1 and 2 is characterized in that the substrate sidewall is set to male and fomale(M&F), and the conducting film on the substrate sidewall is the rete through patterned.
9. OLED display unit according to claim 1 and 2 is characterized in that, the positive back side of said substrate is etched surface.
10. an OLED mosaic display screen is characterized in that, comprises claim 1 or 2 described OLED display units.
CN2012102241978A 2012-07-02 2012-07-02 OLED (organic light-emitting diode) display unit and OLED spliced display screen with same Pending CN102723445A (en)

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CN104992956A (en) * 2015-05-15 2015-10-21 深圳市华星光电技术有限公司 Frameless display apparatus and manufacture method thereof
CN106206669A (en) * 2016-08-31 2016-12-07 昆山维信诺科技有限公司 Wiring method and abnormity OLED product for abnormity OLED product
CN106783920A (en) * 2016-12-21 2017-05-31 深圳市华星光电技术有限公司 Display panel, seamless splicing display device based on flexible OLED and preparation method thereof
CN108807473A (en) * 2017-12-29 2018-11-13 南京轩世琪源软件科技有限公司 A kind of display chip for virtual reality
WO2019037501A1 (en) * 2017-08-22 2019-02-28 京东方科技集团股份有限公司 Substrate, manufacturing method therefor, display panel, manufacturing method therefor, and tiled screens
CN109739057A (en) * 2019-02-28 2019-05-10 京东方科技集团股份有限公司 The binding method of display device and display base plate
CN109838725A (en) * 2017-11-29 2019-06-04 乐金显示有限公司 Tile arrangement type lighting device for organic luminescent device
WO2020073312A1 (en) * 2018-10-12 2020-04-16 深圳市柔宇科技有限公司 Display device, electronic device, and manufacturing method for display device
WO2022062723A1 (en) * 2020-09-24 2022-03-31 京东方科技集团股份有限公司 Display panel, preparation method therefor, display device, and splicing display device
CN114973979A (en) * 2022-05-19 2022-08-30 Tcl华星光电技术有限公司 Display module and display device

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CN109838725A (en) * 2017-11-29 2019-06-04 乐金显示有限公司 Tile arrangement type lighting device for organic luminescent device
CN108807473A (en) * 2017-12-29 2018-11-13 南京轩世琪源软件科技有限公司 A kind of display chip for virtual reality
WO2020073312A1 (en) * 2018-10-12 2020-04-16 深圳市柔宇科技有限公司 Display device, electronic device, and manufacturing method for display device
CN109739057A (en) * 2019-02-28 2019-05-10 京东方科技集团股份有限公司 The binding method of display device and display base plate
WO2022062723A1 (en) * 2020-09-24 2022-03-31 京东方科技集团股份有限公司 Display panel, preparation method therefor, display device, and splicing display device
CN114973979A (en) * 2022-05-19 2022-08-30 Tcl华星光电技术有限公司 Display module and display device
CN114973979B (en) * 2022-05-19 2024-02-20 Tcl华星光电技术有限公司 Display module and display device

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Application publication date: 20121010