CN103681775A - AMOLED (Active Matrix/Organic Light Emitting Diode) display device - Google Patents
AMOLED (Active Matrix/Organic Light Emitting Diode) display device Download PDFInfo
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- CN103681775A CN103681775A CN201310750642.9A CN201310750642A CN103681775A CN 103681775 A CN103681775 A CN 103681775A CN 201310750642 A CN201310750642 A CN 201310750642A CN 103681775 A CN103681775 A CN 103681775A
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Abstract
The invention relates to the technical field of display, and discloses an AMOLED display device, which comprises an array substrate and an opposite substrate of the array substrate, wherein a cathode on the array substrate is transparent; the opposite substrate comprises at least one light-transmitting conducting structure; the cathode and the light-transmitting conducting structure are connected through a bonding agent containing conducting particles. In the AMOLED display device, the light-transmitting conducting structure is connected in parallel with the cathode, and the cathode resistance is reduced, thereby reducing the IR drop; moreover, a shading structure (such as a cathode auxiliary line in the prior art) is not formed on the periphery of a pixel area, thereby preventing the aperture opening ratio from being influenced.
Description
Technical field
The present invention relates to Display Technique field, particularly a kind of AMOLED display unit.
Background technology
For the AMOLED display unit of top transmitting, negative electrode adopts transparency electrode (as: ITO) to form, and is that a monoblock covers the block type electrode on array base palte, so the resistance of negative electrode is very high.Cathode resistor is very high, can increase IR drop, excessive IR drop can affect picture all once.In order to reduce IR drop, in existing scheme, by negative electrode boost line, reduce IRdrop, as shown in Figure 1, non-pixel region on array base palte, form the some negative electrode boost lines that are positioned at different layers with negative electrode, normally form with anode, as negative electrode boost line in Fig. 1 120 and anode 110 adopt same material and form simultaneously, both are positioned at same layer simultaneously.Negative electrode boost line 120 and the negative electrode that is arranged in upper strata are connected (Fig. 1, negative electrode boost line 120 is network structure on whole substrate, some bar shaped via holes 130 are also netted) by bar shaped via hole 130.It is in parallel with negative electrode that this is equivalent to negative electrode boost line 120, thereby reduced the resistance of negative electrode, therefore reduced IR drop.But to lay some negative electrode boost lines at pixel region (viewing area) edge, can cause the aperture opening ratio of whole display unit to reduce.
Summary of the invention
(1) technical problem that will solve
The technical problem to be solved in the present invention is: how in the situation that reducing IR drop, not affect aperture opening ratio.
(2) technical scheme
For solving the problems of the technologies described above, the invention provides a kind of AMOLED display unit, comprise: array base palte and with the counter substrate of described array base palte, negative electrode on described array base palte is transparent, in described counter substrate, comprise at least one printing opacity conductive structure, described negative electrode is connected by the binding agent that contains conducting particles with described printing opacity conductive structure.
Wherein, described counter substrate is color membrane substrates, and described color membrane substrates comprises: underlay substrate, the colored filter on underlay substrate and the black matrix between colored filter, and described black matrix is electric conducting material, and be network structure, described printing opacity conductive structure is described black matrix.
Wherein, described counter substrate is color membrane substrates; described color membrane substrates also comprises: cover the protective layer of described colored filter and described black matrix, on described protective layer, the region of corresponding black matrix is formed with via hole, and described binding agent connects described black matrix by described via hole.
Wherein, described counter substrate is color membrane substrates, described color membrane substrates comprises: underlay substrate, the colored filter on underlay substrate and the black matrix between colored filter, described printing opacity conductive structure is to be positioned at described color membrane substrates towards the transparency electrode on array base palte one side surface.
Wherein, described counter substrate is color membrane substrates, described color membrane substrates comprises: underlay substrate, the colored filter on underlay substrate, the black matrix between colored filter, also comprise and be positioned at the transparency electrode that described colored filter deviates from a side of described underlay substrate, described black matrix is electric conducting material, and be network structure, described transparency electrode connects described black matrix, jointly forms described printing opacity conductive structure.
Wherein, described counter substrate is color membrane substrates; described color membrane substrates also comprises: cover the protective layer of described colored filter and described black matrix, on described protective layer, the region of corresponding black matrix is formed with via hole, and described transparency electrode connects described black matrix by described via hole.
Wherein, described transparency electrode is strip or network structure.
Wherein, described in described transparency electrode place, the projection on underlay substrate is positioned at the drop shadow spread of described black matrix on described underlay substrate.
Wherein, described counter substrate comprises: transparent substrates substrate, described printing opacity conductive structure is the transparency electrode being positioned on described underlay substrate.
Wherein, described conducting particles is metallic.
(3) beneficial effect
In AMOLED display unit of the present invention, form printing opacity conductive structure on negative electrode, both connect by the binding agent that contains conducting particles, and it is in parallel that printing opacity conductive structure and negative electrode form, and reduced cathode resistor, have therefore reduced IR drop; And the pixel region periphery on array base palte does not form the structure (as: negative electrode boost line in prior art) of shading, therefore can not affect aperture opening ratio.
Accompanying drawing explanation
Fig. 1 is the planar structure schematic diagram of array base palte of a kind of AMOLED display unit of prior art;
Fig. 2 a is a kind of AMOLED display unit schematic cross-section of the embodiment of the present invention;
Fig. 2 b is the another kind of AMOLED display unit schematic cross-section of the embodiment of the present invention;
Fig. 2 c is another AMOLED display unit schematic cross-section of the embodiment of the present invention.
Embodiment
AMOLED display unit of the present invention comprises: array base palte and with the counter substrate of described array base palte.Negative electrode on array base palte is transparent, is the AMOLED display unit of top transmitting.Because negative electrode is a monoblock electrode structure, resistance is very large, in order to reduce the IR drop causing due to resistance, at least one printing opacity conductive structure is set in counter substrate, and negative electrode is connected by the binding agent that contains conducting particles with printing opacity conductive structure.This connected mode is equivalent to negative electrode and printing opacity conductive structure is in parallel, has reduced cathode resistor, thereby has reduced IR drop.And the non-pixel region setting conductive structure in parallel with negative electrode on array base palte not, therefore in parallel with negative electrode but printing opacity conductive structure in counter substrate, can not exert an influence to the aperture opening ratio of AMOLED display unit.Wherein, conducting particles can be metallic.
Below in conjunction with drawings and Examples, the specific embodiment of the present invention is described in further detail.Following examples are used for illustrating the present invention, but are not used for limiting the scope of the invention.
Embodiment 1
The AMOLED display unit of the present embodiment as shown in Figure 2 a, comprising: array base palte 210 and with the counter substrate of array base palte 210.Counter substrate can be color membrane substrates 240, and color membrane substrates 240 comprises: underlay substrate 244, be positioned at colored filter (R, G, B three-colour filter) and the black matrix 243 between colored filter on underlay substrate 244.Black matrix 243 is network structure conventionally, is formed on non-pixel region.On colored filter and black matrix 243, be also coated with the protective layer 242 of protection colored filter.Printing opacity conductive structure is to be positioned at color membrane substrates 240 conventionally by indium tin oxide Indium Tin Oxide, to be made towards the transparency electrode 241(on array base palte 210 1 side surfaces; be called for short ITO), transparency electrode is positioned at protective layer 242 towards the surface of array base palte 210.
In order to make the negative electrode (not shown) at transparency electrode 241 and array base palte 210 tops form parallel-connection structure, between transparency electrode 241 and negative electrode, by the binding agent that contains conducting particles, be connected with negative electrode.The binding agent that contains conducting particles in the present embodiment comprises two parts; encapsulated layer 220 and adhesion layer 230; encapsulated layer 220 is for the protection of the layer structure with array of packages substrate 210 top negative electrodes (can think the part in array base palte hierarchical structure), and adhesion layer 230 plays the effect that connects array base palte 210 and color membrane substrates 240.Encapsulated layer 220 and adhesion layer 230 all can contain metal ion, and both are conductor, make transparency electrode 241 and negative electrode form parallel-connection structure, thereby have reduced IR drop.And do not have the non-pixel region setting conductive structure in parallel with negative electrode on array base palte 210, therefore, can not exert an influence to the aperture opening ratio of AMOLED display unit.
Embodiment 2
The AMOLED display unit of the present embodiment as shown in Figure 2 b, comprising: array base palte 210 and with the counter substrate of array base palte 210.Counter substrate can be color membrane substrates 240, and color membrane substrates 240 comprises: underlay substrate 244, be positioned at colored filter (R, G, B three-colour filter) and the black matrix 243 between colored filter on underlay substrate 244.On colored filter and black matrix 243, be also coated with the protective layer 242 of protection colored filter.In the present embodiment, black matrix 243 is electric conducting material (as metal), and is network structure, and therefore black matrix 243 can be directly as the printing opacity conductive structure (do not need transparency electrode in embodiment 1) in parallel with negative electrode.
In order to make the negative electrode (not shown) at black matrix 243 and array base palte 210 tops form parallel-connection structure, between transparency electrode 241 and negative electrode, by the binding agent that contains conducting particles, be connected with negative electrode.The binding agent that contains conducting particles in the present embodiment comprises two parts; encapsulated layer 220 and adhesion layer 230; encapsulated layer 220 is for the protection of the layer structure with array of packages substrate 210 top negative electrodes (can think the part in array base palte hierarchical structure), and adhesion layer 230 plays the effect that connects array base palte 210 and color membrane substrates 240.Encapsulated layer 220 and adhesion layer 230 all can contain metal ion, and both are conductor, make black matrix 243 and negative electrode form parallel-connection structure, thereby have reduced IR drop.And black matrix 243 itself is the structure that existing display unit exists, do not increase extra conductive structure in parallel with negative electrode, therefore, aperture opening ratio can not be affected yet.
In the present embodiment, adhesion layer 230 connects black matrix 243 by being formed on the via hole of corresponding black matrix area on protective layer 242.Certainly in the situation that there is no protective layer 242 (as: colored filter adopts the material of physics and chemistry stable in properties, is not subject to the impact of adjacent layer), adhesion layer 230 can directly connect black matrix 243.
Embodiment 3
The AMOLED display unit of the present embodiment as shown in Figure 2 c, comprising: array base palte 210 and with the counter substrate of array base palte 210.Counter substrate can be color membrane substrates 240, and color membrane substrates 240 comprises: underlay substrate 244, be positioned at colored filter (R, G, B three-colour filter) and the black matrix 243 between colored filter on underlay substrate 244.On colored filter and black matrix 243, be also coated with the protective layer 242 of protection colored filter.In the present embodiment, black matrix 243 is electric conducting material (as metal), and is network structure.Also comprise that being positioned at color membrane substrates 240 is made by indium tin oxide Indium Tin Oxide conventionally towards the transparency electrode 241(on array base palte 210 1 side surfaces, be called for short ITO), transparency electrode is positioned at protective layer 242 towards the surface of array base palte 210.In the present embodiment, transparency electrode 241 connects black matrix 243, specifically by being formed on the via hole of corresponding black matrix area on protective layer 242, connects black matrix 243, by transparency electrode 241 and black matrix 243, jointly forms printing opacity conductive structure.Certainly in the situation that there is no protective layer 242 (as: colored filter adopts the material of physics and chemistry stable in properties, is not subject to the impact of adjacent layer), transparency electrode 241 can directly connect black matrix 243.
In order to make the negative electrode (not shown) at transparency electrode 241 and array base palte 210 tops form parallel-connection structure, between transparency electrode 241 and negative electrode, by the binding agent that contains conducting particles, be connected with negative electrode.The binding agent that contains conducting particles in the present embodiment comprises two parts; encapsulated layer 220 and adhesion layer 230; encapsulated layer 220 is for the protection of the layer structure with array of packages substrate 210 top negative electrodes (can think the part in array base palte hierarchical structure), and adhesion layer 230 plays the effect that connects array base palte 210 and color membrane substrates 240.Encapsulated layer 220 and adhesion layer 230 all can contain metal ion, and both are conductor, make transparency electrode 241, black matrix 243 and negative electrode form parallel-connection structure, with respect to embodiment 1 and embodiment 2, have reduced further IR drop.And do not have the non-pixel region setting conductive structure in parallel with negative electrode on array base palte 210, therefore, can not exert an influence to the aperture opening ratio of AMOLED display unit.
In above three embodiment, colored filter is formed on color membrane substrates, the display unit forming for COA, and counter substrate can be a transparent substrates substrate, printing opacity conductive structure is the transparency electrode being positioned on underlay substrate.Transparency electrode and negative electrode are in parallel with negative electrode by the binding agent that contains conducting particles.Similar with above three embodiment, in parallel with negative electrode can be the common structure forming of transparency electrode, black matrix or transparency electrode and black matrix.
Above execution mode is only for illustrating the present invention; and be not limitation of the present invention; the those of ordinary skill in relevant technologies field; without departing from the spirit and scope of the present invention; can also make a variety of changes and modification; therefore all technical schemes that are equal to also belong to category of the present invention, and scope of patent protection of the present invention should be defined by the claims.
Claims (10)
1. an AMOLED display unit, comprise: array base palte and with the counter substrate of described array base palte, negative electrode on described array base palte is transparent, it is characterized in that, in described counter substrate, comprise at least one printing opacity conductive structure, described negative electrode is connected by the binding agent that contains conducting particles with described printing opacity conductive structure.
2. AMOLED display unit as claimed in claim 1, it is characterized in that, described counter substrate is color membrane substrates, described color membrane substrates comprises: underlay substrate, the colored filter on underlay substrate and the black matrix between colored filter, described black matrix is electric conducting material, and be network structure, described printing opacity conductive structure is described black matrix.
3. AMOLED display unit as claimed in claim 2; it is characterized in that; described counter substrate is color membrane substrates; described color membrane substrates also comprises: the protective layer that covers described colored filter and described black matrix; on described protective layer, the region of corresponding black matrix is formed with via hole, and described binding agent connects described black matrix by described via hole.
4. AMOLED display unit as claimed in claim 1, it is characterized in that, described counter substrate is color membrane substrates, described color membrane substrates comprises: underlay substrate, the colored filter on underlay substrate and the black matrix between colored filter, described printing opacity conductive structure is to be positioned at described color membrane substrates towards the transparency electrode on array base palte one side surface.
5. AMOLED display unit as claimed in claim 1, it is characterized in that, described counter substrate is color membrane substrates, described color membrane substrates comprises: underlay substrate, the colored filter on underlay substrate, the black matrix between colored filter, also comprise and be positioned at the transparency electrode that described colored filter deviates from a side of described underlay substrate, described black matrix is electric conducting material, and is network structure, described transparency electrode connects described black matrix, jointly forms described printing opacity conductive structure.
6. AMOLED display unit as claimed in claim 5; it is characterized in that; described counter substrate is color membrane substrates; described color membrane substrates also comprises: the protective layer that covers described colored filter and described black matrix; on described protective layer, the region of corresponding black matrix is formed with via hole, and described transparency electrode connects described black matrix by described via hole.
7. the AMOLED display unit as described in any one in claim 4～6, is characterized in that, described transparency electrode is strip or network structure.
8. AMOLED display unit as claimed in claim 7, is characterized in that, the projection described in described transparency electrode place on underlay substrate is positioned at the drop shadow spread of described black matrix on described underlay substrate.
9. AMOLED display unit as claimed in claim 1, is characterized in that, described counter substrate comprises: transparent substrates substrate, described printing opacity conductive structure is the transparency electrode being positioned on described underlay substrate.
10. AMOLED display unit as claimed in claim 1, is characterized in that, described conducting particles is metallic.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310750642.9A CN103681775B (en) | 2013-12-31 | 2013-12-31 | Amoled display device |
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| CN201310750642.9A CN103681775B (en) | 2013-12-31 | 2013-12-31 | Amoled display device |
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| CN103681775B CN103681775B (en) | 2016-06-08 |
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| CN108807497A (en) * | 2018-08-06 | 2018-11-13 | 京东方科技集团股份有限公司 | A kind of AMOLED display panels and preparation method thereof |
| CN110931656A (en) * | 2019-12-05 | 2020-03-27 | 深圳市华星光电半导体显示技术有限公司 | Display panel and preparation method thereof |
| CN111474785A (en) * | 2020-05-12 | 2020-07-31 | 深圳市华星光电半导体显示技术有限公司 | Liquid crystal display panel |
| CN111883576A (en) * | 2020-09-09 | 2020-11-03 | 云谷（固安）科技有限公司 | Display panel, display device and forming method |
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| CN111883576A (en) * | 2020-09-09 | 2020-11-03 | 云谷（固安）科技有限公司 | Display panel, display device and forming method |
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| CN103681775B (en) | 2016-06-08 |
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