CN102097450A - Display device of organic light-emitting diodes - Google Patents
Display device of organic light-emitting diodes Download PDFInfo
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- CN102097450A CN102097450A CN2010105400286A CN201010540028A CN102097450A CN 102097450 A CN102097450 A CN 102097450A CN 2010105400286 A CN2010105400286 A CN 2010105400286A CN 201010540028 A CN201010540028 A CN 201010540028A CN 102097450 A CN102097450 A CN 102097450A
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Abstract
The invention provides a display device of organic light-emitting diodes, comprising a substrate. The substrate is provided with an active pixel array, a conductor wireframe, an organic conductive layer and a protection structure, wherein each pixel is formed by encircling of a data line and a scanning line, which are adjacent to the pixel, and at least contains two thin-film transistors, a storage capacitor formed by two layers of metal layers and an organic light-emitting diode, the conductor wireframe is arranged on the substrate, is electrically connected with the source electrode or the drain electrode of one of the two thin-film transistors of each pixel and encircles the area of the active pixel array, the organic conductive layer covers the active pixel array, is connected with the conductor wireframe or simultaneously connected with the conductor wireframe and an electrode, and the protection structure covers the organic conductive layer and contains a plurality of organic layers and inorganic layers, which are mutually piled. The display device of the organic light-emitting diodes, which is provided by the invention, can reduce the width of the conductor wireframe and lessen the influence of the resistance drop.
Description
Technical field
The invention relates to a kind of organic LED display device, and particularly relevant for a kind of organic LED display device with organic conductive layers.
Background technology
Along with the continuous development of science and technology, people are more and more higher to the requirement of display.OLED (Organic Light-Emitting Display, organic light emitting display) is meant organic semiconducting materials and luminescent material under electric field driven, injects and compoundly causes luminous phenomenon by charge carrier.The OLED principle of luminosity is respectively as the anode and the negative electrode of device with ito transparent electrode and metal electrode, under certain voltage drives, electronics and hole are injected into electronics and hole transmission layer from negative electrode and anode respectively, luminescent layer is moved to through electronics and hole transmission layer respectively in electronics and hole, and in luminescent layer, meet, form exciton and light emitting molecule is excited, the latter sends visible light through radiative relaxation.Radiant light can also play the reflector from the ITO unilateral observation to, metal electrode film simultaneously.No matter on image quality, usefulness and cost, congenital performance is all outstanding a lot of than Thin Film Transistor-LCD for the display floater that uses OLED.
Yet the OLED display runs into a problem always in development, that is exactly so-called resistance drop (IR DROP).Resistance drop is meant and appears at power on a kind of phenomenon of drops or rising of power supply and zone network in the integrated circuit.Along with the width of the evolution metal interconnecting wires of semiconductor technology is more and more narrow, cause its resistance value to rise, so in the entire chip scope, will have certain resistance drop.
The voltage difference that resistance drop can cause anode (or negative electrode) signal of OLED to be seen at active region (Active Area) diverse location, this can see the phenomenon of brightness disproportionation in display frame.Can design a conductor wire frame of forming by metal level (OVDD line ring) around the active region traditionally, be able to approachingly by this wire frame by the voltage signal that enters into active region around the active region, reduce the influence of resistance drop.
Yet in fact, the size of conductor wire frame can influence the frame size of panel, the problem of frame is even more important in the application of small-medium size display unit, therefore cannot unrestrictedly increase the size of conductor wire frame, and also having the resistance drop problem that more is far more than the outside in active region inside, resistance drop therefore how to eliminate active region integral body is the major issue that the development of OLED display is faced.
Summary of the invention
In view of this, one aspect of the present invention is to provide a kind of organic LED display device, comprise a substrate, it has an active pel array, wherein each pixel is surrounded by adjacent data wire and scan line, each described pixel comprises two thin-film transistors at least, by the formed storage capacitors of two metal layers, one Organic Light Emitting Diode, it is characterized in that, described display unit also comprises: a conductor wire frame, be arranged on the described substrate, electrically connect with one of them source electrode or drain electrode of two thin-film transistors of each pixel, and around described active pel array region; One organic conductive layers covers described active pel array, and is connected with described conductor wire frame; And one the protection structure, cover described organic conductive layers, comprise a plurality of organic layers and the inorganic layer that pile up alternately.
According to one embodiment of the invention, the Organic Light Emitting Diode color is red, green, blue, viridescent, fuchsin, Huang, one of them person in vain.
According to one embodiment of the invention, described conductor wire frame is a voltage wire frame (OVDD line ring).
According to one embodiment of the invention, be coated with a ground electrode layer (OVSS) on the described Organic Light Emitting Diode.
According to one embodiment of the invention, described conductor wire frame is metal or transparent conductive material.
Another aspect of the present invention is to provide a kind of organic LED display device, comprise a substrate, it has an active pel array, wherein each pixel is surrounded by adjacent data wire and scan line, each described pixel comprises two thin-film transistors at least, by the formed storage capacitors of two metal layers, an Organic Light Emitting Diode, it is characterized in that, described display unit also comprises: a conductor wire frame, be arranged on the described substrate, around described active pel array region; One organic conductive layers covers described active pel array, is connected with described conductor wire frame by a plurality of holes, is connected with an electrode by described hole in active pel array region; And one the protection structure, cover described organic conductive layers, comprise a plurality of organic layers and the inorganic layer that pile up alternately.
According to one embodiment of the invention, described electrode layer is metal or transparent conductive material.
According to one embodiment of the invention, described Organic Light Emitting Diode color is red, green, blue, viridescent, fuchsin, Huang, one of them person in vain.
Application the invention has the advantages that, the mode of utilizing organic conductive layers and existing conductor wire frame to electrically connect can reduce the equivalent resistance of integral body compared to the mode of traditional simple use conductor wire frame, eliminate the resistance drop in the whole active region, make the brightness of OLED display unit more even.
Description of drawings
For above and other objects of the present invention, feature, advantage and embodiment can be become apparent, being described in detail as follows of appended accompanying drawing:
Fig. 1 is the schematic top plan view according to the organic LED display device of one embodiment of the invention;
Fig. 2 is the partial sectional view according to the organic LED display device of one embodiment of the invention;
Fig. 3 is the schematic top plan view according to the organic LED display device of further embodiment of this invention; And
Fig. 4 is the partial sectional view according to the organic LED display device of further embodiment of this invention.
Embodiment
Below will and describe clear explaination spirit of the present invention in detail with accompanying drawing, any those of ordinary skill in the art is after understanding preferred embodiment of the present invention, when can be by the disclosed technology of the present invention, change and modification, and do not break away from spirit of the present invention and scope.
Please in conjunction with reference Fig. 1 and Fig. 2, Fig. 1 is the schematic top plan view according to the organic LED display device of one embodiment of the invention, and Fig. 2 is the partial sectional view according to the organic LED display device shown in Fig. 1.The organic LED display device of present embodiment has a substrate 100, can be transparency carrier, for example transparent glass substrate or transparent flexible substrate, and it mainly is the usefulness as the element of carrying organic LED display device.Has initiatively pel array on the substrate 100, initiatively the zone that is used to show of pel array formation is active region 102 (Active Area), wherein each pixel is surrounded by adjacent data wire and scan line, each described pixel comprises two thin-film transistors at least, by a formed storage capacitors of two metal layers and an Organic Light Emitting Diode layer 106, Organic Light Emitting Diode color wherein is red, green, blue, viridescent, fuchsin, Huang, one of them person in vain.On substrate 100, also be manufactured with first insulating barrier 108 and second insulating barrier 110.Conductor wire frame 112 is that voltage wire frame (OVDD line ring) is arranged at first insulating barrier, 108 same surfaces, electrically connects with one of them source electrode or drain electrode of two thin-film transistors of each pixel, and around active region 102.It should be noted that among the figure and the connecting circuit of not shown conductor lines frame 112 and thin-film transistor.Conductor wire frame 112 is to be made by metal or transparent conductive material.Be coated with a ground electrode layer (OVSS) 114 on the Organic Light Emitting Diode layer 106, also be coated with an inorganic protective layer 116 on it.Because conductor wire frame 112 around active region 102, makes the voltage signal that enters into active region 102 be able to approaching.Yet in order to reduce the frame size of organic LED display device, the width of conductor wire frame 112 can not be wide, makes the miopragia of its homogenizing voltage signal.Therefore, above inorganic protective layer 116, also make an organic conductive layers 118 in the present embodiment, cover conductor wire frame 112 and whole active region 102.Position corresponding to conductor wire frame 112 on first insulating barrier 108 and second insulating barrier 110 makes hole, makes organic conductive layers 118 run through first insulating barrier 108 and second insulating barrier 110 and 112 electric connections of conductor wire frame.Use strip groove 120 to replace hole in the present embodiment, it is more abundant that organic conductive layers 118 is connected with conductor wire frame 112.The equiva lent impedance of conductor wire frame 112 is reduced, so the mode compared to traditional simple use conductor wire frame 112 can reduce whole equivalent resistance, eliminate the resistance drop in the whole active region 102, make the brightness of OLED display unit more even.In addition, after organic LED display panel had been made, encapsulated phase can be made a protection structure 122 to prevent outside water oxygen invasion on panel.Protection structure 122 comprises a plurality of organic layers and the inorganic layer that piles up alternately.
Then please in conjunction with reference Fig. 3 and Fig. 4, Fig. 3 is the schematic top plan view according to the organic LED display device of further embodiment of this invention, and Fig. 4 is the partial sectional view according to the organic LED display device shown in Fig. 3.The organic LED display device of present embodiment has a substrate 100, can be transparency carrier, for example transparent glass substrate or transparent flexible substrate, and it mainly is the usefulness as the element of carrying organic LED display device.Has initiatively pel array on the substrate 100, initiatively the zone that is used to show of pel array formation is active region 102 (Active Area), wherein each pixel is surrounded by adjacent data wire and scan line, each described pixel comprises two thin-film transistors at least, by a formed storage capacitors of two metal layers and an Organic Light Emitting Diode layer 106, Organic Light Emitting Diode color wherein is red, green, blue, viridescent, fuchsin, Huang, one of them person in vain.On substrate 100, also be manufactured with first insulating barrier 108 and second insulating barrier 110.Conductor wire frame 112 is that voltage wire frame (OVDD line ring) is arranged at first insulating barrier, 108 same surfaces, and around active region 102, conductor wire frame 112 is to be made by metal or transparent conductive material.Be coated with a ground electrode layer (OVSS) 114 on the Organic Light Emitting Diode layer 106, also be coated with an inorganic protective layer 116 on it.Because conductor wire frame 112 around active region 102, makes the voltage signal that enters into active region 102 be able to approaching.Yet in order to reduce the frame size of organic LED display device, the width of conductor wire frame 112 can not be wide, makes the miopragia of its homogenizing voltage signal.Therefore, also make an organic conductive layers 118` in the present embodiment above inorganic protective layer 116, it is netted covering conductor wire frame 112 and whole active region 102.Position corresponding to conductor wire frame 112 on first insulating barrier 108 and second insulating barrier 110 makes hole, makes organic conductive layers 118 run through first insulating barrier 108 and second insulating barrier 110 and 112 electric connections of conductor wire frame.Use strip groove 120 to replace hole in the present embodiment, it is more abundant that organic conductive layers 118` is connected with conductor wire frame 112.In addition; because also there is tangible resistance drop active region 102 inside; therefore be positioned at active region 102 places at inorganic protective layer 116, ground electrode layer 114, Organic Light Emitting Diode layer 106, first insulating barrier 108 and second insulating barrier 110 and make a plurality of through holes 128 that connect; make organic conductive layers 118` at non-active region 102 places by groove 120 with outside conductor lines mad 112 is connected, also pass through through hole 128 and be connected with electrode 130 on the substrate 100 in active region 102 inside.Except reducing, the equiva lent impedance that can make conductor wire frame 112 also can make the voltage signal of active region 102 inside further approaching like this, mode compared to traditional simple use conductor wire frame 112 can reduce whole equivalent resistance, eliminate the resistance drop in the whole active region 102, make the brightness of OLED display unit more even.In addition, after organic LED display panel had been made, encapsulated phase can be made a protection structure 122 to prevent outside water oxygen invasion on panel.Protection structure 122 comprises a plurality of organic layers and the inorganic layer that piles up alternately.
Use organic LED display device provided by the present invention, owing to use the attached platform of double suction, can reduce panel deformation compared to the attached platform of single suction, vertical line of cut is because action of gravity can make solvent fully moistening, make cutting more effective, position by the real-time feedback panel of monitoring device, propulsion plant is revised immediately advanced the position, thereby cutting position is remained in the adhesive phase, avoid damaging panel, use full-automatic mechanical equipment counter plate to carry out cutting and separating and can improve operating efficiency and will reduce greatly because of cutting the fraction defective that causes accidentally simultaneously.
Though the present invention discloses as above with execution mode; right its is not in order to limit the present invention; any those of ordinary skill in the art; without departing from the spirit and scope of the present invention; when can being used for a variety of modifications and variations, so protection scope of the present invention is as the criterion when looking accompanying the claim person of defining.
Claims (8)
1. organic LED display device, comprise a substrate, it has an active pel array, wherein each pixel is surrounded by adjacent data wire and scan line, each described pixel comprises two thin-film transistors at least, by the formed storage capacitors of two metal layers, an Organic Light Emitting Diode, it is characterized in that described display unit also comprises:
One conductor wire frame is arranged on the described substrate, electrically connects with one of them source electrode or drain electrode of described two thin-film transistors of each pixel, and around described active pel array region;
One organic conductive layers covers described active pel array, and is connected with described conductor wire frame; And
One protection structure covers described organic conductive layers, comprises a plurality of organic layers and the inorganic layer that pile up alternately.
2. organic LED display device according to claim 1 is characterized in that, described Organic Light Emitting Diode color is red, green, blue, viridescent, fuchsin, Huang, one of them person in vain.
3. organic LED display device according to claim 1 is characterized in that, described conductor wire frame is a voltage wire frame (OVDD line ring).
4. organic LED display device according to claim 1 is characterized in that, is coated with a ground electrode layer (OVSS) on the described Organic Light Emitting Diode.
5. organic LED display device according to claim 1 is characterized in that, described conductor wire frame is metal or transparent conductive material.
6. organic LED display device, comprise a substrate, it has an active pel array, wherein each pixel is surrounded by adjacent data wire and scan line, each described pixel comprises two thin-film transistors at least, by the formed storage capacitors of two metal layers, an Organic Light Emitting Diode, it is characterized in that described display unit also comprises:
One conductor wire frame is arranged on the described substrate, electrically connects with one of them source electrode or drain electrode of described two thin-film transistors of each pixel, around described active pel array region;
One organic conductive layers covers described active pel array, is connected with described conductor wire frame by a plurality of holes, is connected with an electrode by described hole in active pel array region; And
One protection structure covers described organic conductive layers, comprises a plurality of organic layers and the inorganic layer that pile up alternately.
7. organic LED display device according to claim 1 is characterized in that, described conductor wire frame is metal or transparent conductive material.
8. organic LED display device according to claim 1 is characterized in that, described Organic Light Emitting Diode color is red, green, blue, viridescent, fuchsin, Huang, one of them person in vain.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105400286A CN102097450A (en) | 2010-11-02 | 2010-11-02 | Display device of organic light-emitting diodes |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010105400286A CN102097450A (en) | 2010-11-02 | 2010-11-02 | Display device of organic light-emitting diodes |
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| CN102097450A true CN102097450A (en) | 2011-06-15 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103441137A (en) * | 2013-04-24 | 2013-12-11 | 友达光电股份有限公司 | Electroluminescent display panel and manufacturing method thereof |
| WO2016145770A1 (en) * | 2015-03-17 | 2016-09-22 | 京东方科技集团股份有限公司 | Organic light emitting diode packaging structure and packaging method and display device |
| CN110600528A (en) * | 2019-10-08 | 2019-12-20 | 昆山国显光电有限公司 | Display panel and display device |
| CN112928150A (en) * | 2021-04-09 | 2021-06-08 | 合肥京东方卓印科技有限公司 | Display substrate, preparation method thereof and display device |
-
2010
- 2010-11-02 CN CN2010105400286A patent/CN102097450A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103441137A (en) * | 2013-04-24 | 2013-12-11 | 友达光电股份有限公司 | Electroluminescent display panel and manufacturing method thereof |
| CN103441137B (en) * | 2013-04-24 | 2015-10-28 | 友达光电股份有限公司 | Electroluminescent display panel and manufacturing method thereof |
| WO2016145770A1 (en) * | 2015-03-17 | 2016-09-22 | 京东方科技集团股份有限公司 | Organic light emitting diode packaging structure and packaging method and display device |
| US9755187B2 (en) | 2015-03-17 | 2017-09-05 | Boe Technology Group Co., Ltd. | Organic light-emitting diode packaging structure, method for packaging organic light-emitting diode, and display device |
| CN110600528A (en) * | 2019-10-08 | 2019-12-20 | 昆山国显光电有限公司 | Display panel and display device |
| CN112928150A (en) * | 2021-04-09 | 2021-06-08 | 合肥京东方卓印科技有限公司 | Display substrate, preparation method thereof and display device |
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Application publication date: 20110615 |