CN103383950A - Self-luminous two-dimensional displayer and manufacturing method thereof - Google Patents
Self-luminous two-dimensional displayer and manufacturing method thereof Download PDFInfo
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- CN103383950A CN103383950A CN 201210134300 CN201210134300A CN103383950A CN 103383950 A CN103383950 A CN 103383950A CN 201210134300 CN201210134300 CN 201210134300 CN 201210134300 A CN201210134300 A CN 201210134300A CN 103383950 A CN103383950 A CN 103383950A
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Abstract
The invention discloses a self-luminous two-dimensional displayer. The self-luminous two-dimensional displayer comprises a substrate, a lower electrode layer, a luminous multi-layer structure and an upper light-permeable electrode layer, wherein the lower electrode layer, the luminous multi-layer structure and the upper light-permeable electrode layer are arranged on the substrate in sequence. The self-luminous two-dimensional displayer further comprises auxiliary electrode wires, the auxiliary electrode wires are arranged on the upper portion of the substrate and extend to at least one edge of the substrate, and the auxiliary electrode wires are electrically connected between the light-permeable electrode layer and an external power supply. The self-luminous two-dimensional displayer with the auxiliary electrode wires has good displaying driving capacity.
Description
Affiliated technical field
The present invention relates to a kind of self-luminous flat-panel screens and manufacture method thereof, and be particularly related to a kind of Organic Light Emitting Diode flat-panel screens and manufacture method thereof.
Background technology
Organic Light Emitting Diode (organic light-emitting diode, OLED) have the advantages such as self-luminosity, wide viewing angle, high contrast, low power consumption, high reaction rate, true color and processing procedure are simple, and the display that (pixel) completed take OLED as pixel cell can be divided into passive type OLED(passive matrix OLED according to the difference of type of drive, PMOLED) display and active OLED(active matrix OLED, AMOLED) display.
In addition, OLED can be divided into again end emitting OLED (bottom-emission OLED) and upper emitting OLED (top-emission OLED) according to the difference of light emission direction.See also Fig. 1, Fig. 1 is the profile construction schematic diagram of tradition end emitting OLED, wherein luminous sandwich construction 10 both sides are anode layer 11 and cathode layer 12, and the light 101 that luminous sandwich construction 10 sends is through printing opacity anode layer (for example ITO layers) 11 and transparent substrates (for example glass substrate) 1 and to bottom emission.
But can obstruct the light in order to control the luminous thin-film transistor of individual pixel cells 13 in this kind design, make aperture opening ratio (aperture ratio) not good, therefore, upper emitting OLED just is developed.See also Fig. 2, Fig. 2 is the profile construction schematic diagram of emitting OLED traditionally, and wherein luminous sandwich construction 20 both sides are anode layer 21 and cathode layer 22, and the light 201 that luminous sandwich construction 20 sends is through top transparent cathode layer 22 and to top-emission.Thus, the light that upper emitting OLED sends will need not pass through substrate 2, but directly to top-emission, the benefit of this kind design is that thin-film transistor 23 can not obstruct the light via transparent cathode layer 22, makes aperture opening ratio (aperture ratio) effectively to increase.
In order to allow the light transmittance of cathode layer 22 maintain certain level, the material thickness of cathode layer 22 can not be too thick, will cause electric energy loss but the sheet resistor of thin material is excessive excessively, makes the driving force of large-area OLED display not good.
Summary of the invention
The object of the invention is to, a kind of self-luminous flat-panel screens is provided, it has better display driver ability.
The present invention also aims to, a kind of self-luminous manufacture of planar display is provided, the self-luminous flat-panel screens that adopts the method to make has better display driver ability.
It is to adopt following technical scheme to realize that the present invention solves its technical problem.
The present invention proposes a kind of self-luminous flat-panel screens, and it comprises substrate, lower electrode layer, luminous sandwich construction, printing opacity upper electrode layer.Wherein, lower electrode layer is located at above this substrate, and luminous sandwich construction is located at above lower electrode layer, and the printing opacity upper electrode layer is located at above luminous sandwich construction.The self-luminous flat-panel screens also comprises auxiliary electrode line, and auxiliary electrode line is located at the substrate top and is extended at least one edge of substrate, and is electrically connected between euphotic electrode layer and external power source.
The present invention also proposes a kind of self-luminous manufacture of planar display, and it comprises following steps: substrate is provided; Form lower electrode layer above substrate; Form luminous sandwich construction above lower electrode layer; Form the printing opacity upper electrode layer above luminous sandwich construction; And forming auxiliary electrode line above substrate, auxiliary electrode line extends at least one edge of substrate, and is electrically connected between euphotic electrode layer and external power source.
The invention has the beneficial effects as follows, the self-luminous flat-panel screens has auxiliary electrode line, auxiliary electrode line can be connected to external power source the enough actuating force pixel cell to panel inside is provided, thereby makes the self-luminous flat-panel screens have better display driver ability.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 is the profile construction schematic diagram of tradition end emitting OLED.
Fig. 2 is the profile construction schematic diagram of emitting OLED traditionally.
Fig. 3 a is the organigram of the OLED of the first embodiment of the present invention.
Fig. 3 b is the organigram of the OLED of the second embodiment of the present invention.
Fig. 3 c is the thin section profile of luminous sandwich construction.
Fig. 4 is the generalized section of cutting along the bearing of trend that pixel cell is arranged.
1,2: substrate 10,20,30: luminous sandwich construction
11,21: anode layer 12,22: cathode layer
101,201,301: light 13,23,33: thin-film transistor
31: lower electrode layer 32: upper electrode layer
35: auxiliary electrode line 36: adhesive layer
37: inner layer dielectric layer 38: open-work
39: conductive structure 301: electron injecting layer
302: electron transfer layer 303: the electron-hole recombinations luminescent layer
304: hole transmission layer 305: hole injection layer.
Embodiment
See also Fig. 3 a, Fig. 3 a is the organigram of the OLED of the first embodiment of the present invention, express the profile construction of a pixel cell in emitting OLED in figure, wherein luminous sandwich construction 30 both sides are lower electrode layer 31 and upper electrode layer 32, and the light 301 that luminous sandwich construction 30 sends is through the printing opacity upper electrode layer 32 of top and to top-emission.In order to allow the light transmittance of upper electrode layer 32 maintain certain level, the material thickness of upper electrode layer 32 can not be too thick, will cause electric energy loss but the sheet resistor of excessively thin upper electrode layer 32 is excessive, makes the driving force of large-area OLED display not good.For this reason, in the present embodiment, have additional auxiliary electrode line 35, auxiliary electrode line 35 can be set up the side in each pixel cell, and can be electrically connected to the upper electrode layer 32 of pixel cell, and then allow the pixel cell of the same delegation that matrixing arranges share same auxiliary electrode line 35.The two ends of each auxiliary electrode line 35 may extend to the edge of display pannel, and then can be connected to external power source the enough actuating force pixel cell to panel inside is provided.And because the position of auxiliary electrode line 35 not at light-emitting zone, therefore can complete and good conductive capability can be arranged with the conductor of adequate thickness.
And upper electrode layer 32 can be made of transparent conductor ITO (indium oxide of doped tin (tin) (indium oxide)), also can be completed by the metallic conductor of enough thin light-permeable, such as silver, aluminium or the materials such as lithium or its alloy.Do not need light transmissive material to complete as for lower electrode layer 31 and 3 of substrates.In addition, luminous sandwich construction 30 can be by electron injecting layer (electron injection layer, EIL), electron transfer layer (electron transport layer, ETL), electron-hole recombinations luminescent layer (emitting layer, EML), hole transmission layer (hole transport layer, HTL) and hole injection layer (hole injection layer, HIL) etc. structure consists of, and lower electrode layer 31 can be completed respectively required anode layer and cathode layer with upper electrode layer 32.Can complete in adhesive layer (the adhesive layer as shown in Fig. 3 a as for auxiliary electrode line 35, silicon dioxide layer for example) 36 tops, again with core dielectric material (inter-layer dielectric, ILD) 37 cover, and etch open-work 38 in the top and complete electrical contact with upper electrode layer 32.And when carrying out the evaporation of luminous sandwich construction 30, can use the technology of fine metal light shield (fine metal mask) to carry out pattern definition, and fine metal light shield herein need to have additional photomask structure above open-work 38, in order to cover open-work 38 and not allow the material of luminous sandwich construction 30 enter when the evaporation.
Ask for an interview again Fig. 3 b, Fig. 3 b is the organigram of the OLED of the second embodiment of the present invention, express the profile construction of a pixel cell in emitting OLED in figure, the difference of itself and Fig. 3 a is to have another layer conductive structure 39 between auxiliary electrode line 35 and upper electrode layer 32.And the formation of conductive structure 39 can be identical with luminous sandwich construction 30, or the combination of the one deck in luminous sandwich construction 30 or sandwich construction.That is to say, conductive structure 39 can be by above-mentioned electron injecting layer, electron transfer layer, electron-hole recombinations luminescent layer, hole transmission layer and the isostructural part of hole injection layer or is all consisted of.Thus, when carrying out the evaporation of luminous sandwich construction 30, just can carry out pattern definition with original fine metal light shield, do not need additionally to consider the existence of open-work 38 and change the light shield shape, even can not carry out pattern definition with the fine metal light shield, and allow luminous sandwich construction 30 be laid on panel top comprehensively and complete in the lump conductive structure 39, even complete electrical contact with the power line of panel periphery.So, although can allow auxiliary electrode line 35 and 32 of upper electrode layers have part or all material of luminous sandwich construction 30, the experiment proved that, so structure can't electrically have too large impairment to the conducting of 32 of auxiliary electrode line 35 and upper electrode layers.On the contrary, conductive structure 39 really can effectively reduce the complexity of processing procedure.
Be depicted as the thin section profile of luminous sandwich construction 30 as for Fig. 3 c, luminous sandwich construction 30 from top to bottom sequentially is made of structures such as electron injecting layer 301, electron transfer layer 302, electron-hole recombinations luminescent layer 303, hole transmission layer 304 and hole injection layers 305 between upper electrode layer 32 and lower electrode layer 31.
See also again Fig. 4, Fig. 4 is the generalized section of cutting along the bearing of trend that pixel cell is arranged, find out by knowing in figure, the thickness of auxiliary electrode line 35 can be much larger than the thickness of upper electrode layer 32, and can all be provided with auxiliary electrode line 35 in a side of every delegation pixel cell 40, can certainly be just to be provided with an auxiliary electrode line 35 every a few row pixel cells, can improve the not good problem of large-area OLED Display Driver ability in any case auxiliary electrode line 35 is set.And except the OLED display, the technological means of this case can apply on the self luminous flat-panel screens of other similar principles, can reach equally to improve the not good problem of Display Driver ability.
Claims (10)
1. self-luminous flat-panel screens, it comprises substrate, lower electrode layer, luminous sandwich construction, printing opacity upper electrode layer, this lower electrode layer is located at above this substrate, this luminous sandwich construction is located at above this lower electrode layer, this printing opacity upper electrode layer is located at above this luminous sandwich construction, it is characterized in that, this self-luminous flat-panel screens more comprises auxiliary electrode line, this auxiliary electrode line is located at this substrate top and is extended at least one edge of this substrate, and is electrically connected between this euphotic electrode layer and external power source.
2. self-luminous flat-panel screens according to claim 1, is characterized in that, this luminous sandwich construction comprises electron injecting layer, electron transfer layer, electron-hole recombinations luminescent layer, hole transmission layer and hole injection layer.
3. self-luminous flat-panel screens according to claim 1, is characterized in that, the material of this printing opacity upper electrode layer is the metallic conductor of transparent conductor or light-permeable.
4. self-luminous flat-panel screens according to claim 1, is characterized in that, the thickness of this auxiliary electrode line is greater than the thickness of this printing opacity upper electrode layer.
5. self-luminous flat-panel screens according to claim 1, is characterized in that, more is provided with conductive structure in this printing opacity upper electrode layer and this auxiliary electrode line, and this conductive structure has electrical contact to this printing opacity upper electrode layer and this auxiliary electrode line.
6. self-luminous flat-panel screens according to claim 5, is characterized in that, the material of this conductive structure is all identical or partly identical with the material of this luminous sandwich construction.
7. self-luminous manufacture of planar display, it comprises provides substrate; Form lower electrode layer above this substrate; Form luminous sandwich construction above this lower electrode layer; Form the printing opacity upper electrode layer above this luminous sandwich construction; It is characterized in that, this self-luminous manufacture of planar display more is included in this substrate top formation auxiliary electrode line, and this auxiliary electrode line extends at least one edge of this substrate, and is electrically connected between this euphotic electrode layer and external power source.
8. self-luminous manufacture of planar display according to claim 7, is characterized in that, the thickness of this auxiliary electrode line is greater than the thickness of this printing opacity upper electrode layer.
9. self-luminous manufacture of planar display according to claim 7, is characterized in that, more is included in this printing opacity upper electrode layer and this auxiliary electrode line to be formed with conductive structure, and this conductive structure has electrical contact to this printing opacity upper electrode layer and this auxiliary electrode line.
10. self-luminous manufacture of planar display according to claim 9, is characterized in that, this conductive structure is completed in same step with this luminous sandwich construction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210134300 CN103383950A (en) | 2012-05-02 | 2012-05-02 | Self-luminous two-dimensional displayer and manufacturing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201210134300 CN103383950A (en) | 2012-05-02 | 2012-05-02 | Self-luminous two-dimensional displayer and manufacturing method thereof |
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| Publication Number | Publication Date |
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| CN103383950A true CN103383950A (en) | 2013-11-06 |
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| CN 201210134300 Pending CN103383950A (en) | 2012-05-02 | 2012-05-02 | Self-luminous two-dimensional displayer and manufacturing method thereof |
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Application publication date: 20131106 |