CN109449180A - A kind of oled display substrate and OLED display - Google Patents
A kind of oled display substrate and OLED display Download PDFInfo
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- CN109449180A CN109449180A CN201811251329.XA CN201811251329A CN109449180A CN 109449180 A CN109449180 A CN 109449180A CN 201811251329 A CN201811251329 A CN 201811251329A CN 109449180 A CN109449180 A CN 109449180A
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- Prior art keywords
- power supply
- oled display
- supply line
- data line
- substrate
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
- H10K59/131—Interconnections, e.g. wiring lines or terminals
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Electroluminescent Light Sources (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The present invention provides a kind of oled display substrate and OLED display, the oled display substrate includes: underlay substrate and the power supply line being set on the underlay substrate, data line and driving thin film transistor (TFT), the power supply line is connect with the source electrode of the driving thin film transistor (TFT), and the power supply line and the data line bit are in different layers.In the present invention, power supply line and data line are located at different layers, can be to avoid being easy because of the signal caused by power supply line and the setting of data line same layer in power supply line by signal interference in data line the problem of, simultaneously, power supply line can be reduced and drive the parasitic capacitance between the gate electrode of thin film transistor (TFT), active layer, reduce the load (loading) of power supply line, improves the display effect with the display device of the oled display substrate.
Description
Technical field
The present invention relates to field of display technology more particularly to a kind of oled display substrate and OLED displays.
Background technique
Fig. 1 is the pixel circuit figure of existing OLED (Organic Light Emitting Diode) display panel, as shown in Figure 1, existing skill
In OLED display panel in art, most basic pixel circuit includes: switching thin-film transistor T1, driving thin film transistor (TFT) T2 and
The gate electrode of storage capacitance Cs, switching thin-film transistor T1 are connect with scan line Sn, the source electrode of switching thin-film transistor T1 with
Data line Dm connection, the drain electrode of switching thin-film transistor T1, the gate electrode and storage capacitance Cs for driving thin film transistor (TFT) T2
First electrode be all connected to node O1, the source electrode of driving thin film transistor (TFT) T2 is connect with power supply line VDD, driving film crystal
The second electrode of the drain electrode of pipe T2, OLED and storage capacitance Cs is all connected to node O2.
In the prior art, data line and power supply line are arranged in parallel, and are located on the same floor.However, with OLED display panel to
The size of the development of high-resolution, large scale direction, pixel circuit accordingly reduces, and the spacing between data line and power supply line is therewith
Reduce, the signal in power supply line is easy by the signal interference in data line, to influence to show.
Summary of the invention
In view of this, the present invention provides a kind of oled display substrate and OLED display, for solving power supply line and number
The problem of causing signal in power supply line to be easy by signal interference in data line according to the setting of line same layer.
In order to solve the above technical problems, the present invention provides a kind of oled display substrate, comprising:
Underlay substrate and the power supply line being set on the underlay substrate, data line and driving thin film transistor (TFT), it is described
Power supply line is connect with the source electrode of the driving thin film transistor (TFT), which is characterized in that the power supply line and the data line bit in
Different layers.
Optionally, the power supply line is parallel with the data line.
Optionally, the power supply line on the underlay substrate orthographic projection and the data line on the underlay substrate
Orthographic projection be not overlapped.
Optionally, the source electrode and drain electrode same layer of the data line and the driving thin film transistor (TFT) is arranged with material.
Optionally, the power supply line and the data line are made of identical conductive material.
Optionally, the power supply line be located at the data line far from the underlay substrate side, the power supply line with
There is the first insulating layer, the thickness of first insulating layer is more than preset threshold between the data line.
Optionally, the preset threshold is 1 micron.
Optionally, the underlay substrate is flexible substrate substrate.
Optionally, the oled display substrate, including what is set gradually:
The underlay substrate；
Active layer；
Gate insulation layer；
Barrier metal layer, the barrier metal layer include the gate electrode of the driving thin film transistor (TFT)；
Interlayer dielectric layer；
Source and drain metal level, the Source and drain metal level include: the source electricity of the data line and the driving thin film transistor (TFT)
Pole and drain electrode；
First insulating layer；
The power supply line.
The present invention also provides a kind of OLED displays, including above-mentioned oled display substrate.
The advantageous effects of the above technical solutions of the present invention are as follows:
Power supply line and data line are located at different layers, can to avoid because power supply line and data line same layer setting caused by power supply
Signal in line is easy the problem of by signal interference in data line, so that improving, there is the display of the oled display substrate to fill
The display effect set.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below by institute in the description to the embodiment of the present invention
Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the invention
Example, for those of ordinary skill in the art, without any creative labor, can also be according to these attached drawings
Obtain other attached drawings.
Fig. 1 is the pixel circuit figure of existing OLED display panel；
Fig. 2 is the top view of the oled display substrate of one embodiment of the invention；
Fig. 3 is the A-A cross-sectional view of the oled display substrate in Fig. 2.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
Attached drawing, the technical solution of the embodiment of the present invention is clearly and completely described.Obviously, described embodiment is this hair
Bright a part of the embodiment, instead of all the embodiments.Based on described the embodiment of the present invention, ordinary skill
Personnel's every other embodiment obtained, shall fall within the protection scope of the present invention.
The embodiment of the present invention provides a kind of oled display substrate, comprising: underlay substrate and is set to the underlay substrate
On power supply line, data line and driving thin film transistor (TFT), the power supply line with it is described drive thin film transistor (TFT) source electrode connect,
Wherein, the power supply line and the data line bit are in different layers.
In the embodiment of the present invention, power supply line and data line are located at different layers, can be to avoid because of power supply line and data line same layer
Signal caused by setting in power supply line is easy the problem of by signal interference in data line, so that improving has the OLED
The display effect of the display device of display base plate.
In the embodiment of the present invention, optionally, the power supply line and the data line are arranged in parallel.
In some embodiments, since power supply line and data line are located at different layers, the two can be overlapped, i.e., the described electricity
Source line on the underlay substrate orthographic projection and orthographic projection of the data line on the underlay substrate it is least partially overlapped,
To save the space of sub-pixel, the resolution ratio of oled display substrate is improved.
In other embodiments, orthographic projection of the power supply line on the underlay substrate and the data line are in institute
The orthographic projection stated on underlay substrate is not overlapped, so as to be further reduced interference between the two.
In the embodiment of the present invention, optionally, the source electrode and drain electrode of the data line and the driving thin film transistor (TFT)
Same layer is arranged with material, i.e. the source electrode and drain electrode of data line and driving thin film transistor (TFT) can use a patterning processes shape
At, so that exposure mask quantity is saved, reduction production cost.
In the embodiment of the present invention, optionally, the power supply line and the data line are made of identical conductive material, example
It is such as all made of metal material to be made, so that electricity can be completed using same Preparation equipment (such as same metal deposit equipment)
The preparation of source line and data line reduces production cost.
In the embodiment of the present invention, power supply line can be single-layer metal structure, such as Al, can also use multiple layer metal knot
Structure, such as Ti/Al/Ti.
In the embodiment of the present invention, optionally, the power supply line is located at one far from the underlay substrate of the data line
Side has the first insulating layer between the power supply line and the data line, the thickness of first insulating layer is more than preset threshold,
Since the thickness of the first insulating layer is larger, thus power supply line can be increased and drive gate electrode, the active layer etc. of thin film transistor (TFT)
The distance between, the parasitic capacitance between gate electrode, active layer of power supply line and driving thin film transistor (TFT) etc. is reduced, to reduce
The load (loading) of power supply line improves the display effect with the display device of the oled display substrate.Optionally, first
Insulating layer can be PLN (flatness layer).
Optionally, the preset threshold be 1 micron, for example, the first insulating layer with a thickness of 1.5 microns.
In the embodiment of the present invention, optionally, the underlay substrate of the oled display substrate is flexible substrate substrate, such as is adopted
It is made of PI (polyimides) material, i.e., oled display substrate is flexible display substrates.In the related art, some power supply lines are adopted
It being designed with double-layer structure, double-layer structure is unfavorable for the bending of flexible display substrates, and in the embodiment of the present invention, power supply line is using single
Layer structure design, thus it is advantageously implemented the bending of flexible display substrates.
Oled display substrate in the embodiment of the present invention further includes the thin film transistor (TFT) that opens the light, optionally, switch film crystal
The gate electrode of pipe and the gate electrode same layer of driving thin film transistor (TFT) are arranged with material, the source electrode and electric leakage of switching thin-film transistor
The source electrode and drain electrode same layer of pole and driving thin film transistor (TFT) is arranged with material, to reduce production cost.
In the embodiment of the present invention, optionally, the active layer of thin film transistor (TFT) and switching thin-film transistor is driven to use polycrystalline
Silicon (poly) material is made, it is of course also possible to use other materials, such as metal oxide, the materials such as amorphous silicon are made.
Oled display substrate in the embodiment of the present invention can also include OLED, the OLED include anode, luminescent layer and
Cathode, wherein the anode of OLED is connect with the drain electrode of driving thin film transistor (TFT).
Fig. 2 and Fig. 3 are please referred to, Fig. 2 is the top view of the oled display substrate of one embodiment of the invention, and Fig. 3 is in Fig. 2
The A-A cross-sectional view of oled display substrate, the oled display substrate include setting gradually:
Underlay substrate 201；
Active layer 202；
Gate insulation layer 203；
Barrier metal layer 204, the barrier metal layer 204 include the gate electrode of driving thin film transistor (TFT)；
Interlayer dielectric layer 205；
Source and drain metal level, the Source and drain metal level include: data line 2062 and the source electrode for driving thin film transistor (TFT)
2061 and drain electrode (not shown go out)；
First insulating layer 207；
Power supply line 208；
Second insulating layer 209；
Anode 210；
Pixel defining layer 211.
From figure 2 it can be seen that power supply line 208 and data line (i.e. 206 place layer of source electrode) are located at different layers, can keep away
Signal caused by exempting from because of power supply line and the setting of data line same layer in power supply line is easy by the signal interference in data line
Problem, to improve the display effect with the display device of the oled display substrate.
In the embodiment of the present invention, power supply line 208 is connect by the via hole on the first insulating layer 207 with source electrode 206, source electricity
Pole 206 is connect by the via hole on interlayer dielectric layer 205 with active layer 202, to complete power supply line 208 and active layer 202
Connection.
The embodiment of the present invention also provides a kind of OLED display, shows base including the OLED in any of the above-described embodiment
Plate.The OLED display can be OLED display panel, be also possible to include OLED display panel and driving chip display
Device.
Unless otherwise defined, technical term or scientific term used in the present invention are should be in fields of the present invention
The ordinary meaning that personage with general technical ability is understood." first ", " second " used in the present invention and similar word
It is not offered as any sequence, quantity or importance, and is used only to distinguish different component parts." connection " or " connected "
It is not limited to physics or mechanical connection etc. similar word, but may include electrical connection, either directly
Or it is indirect."upper", "lower", "left", "right" etc. are only used for indicating relative positional relationship, when the absolute position for being described object
After setting change, then the relative positional relationship also correspondingly changes.
The above is a preferred embodiment of the present invention, it is noted that for those skilled in the art
For, without departing from the principles of the present invention, it can also make several improvements and retouch, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (10)
1. a kind of oled display substrate, comprising: underlay substrate and the power supply line being set on the underlay substrate, data line and
Thin film transistor (TFT) is driven, the power supply line is connect with the source electrode of the driving thin film transistor (TFT), which is characterized in that the power supply
Line and the data line bit are in different layers.
2. oled display substrate as described in claim 1, which is characterized in that the power supply line is parallel with the data line.
3. oled display substrate as described in claim 1, which is characterized in that the power supply line on the underlay substrate just
It projects not be overlapped with orthographic projection of the data line on the underlay substrate.
4. oled display substrate as described in claim 1, which is characterized in that the data line and the driving thin film transistor (TFT)
Source electrode and drain electrode same layer with material be arranged.
5. oled display substrate as described in claim 1, which is characterized in that the power supply line and the data line are using identical
Conductive material be made.
6. oled display substrate as described in claim 1, which is characterized in that the power supply line is located at the separate of the data line
The side of the underlay substrate has the first insulating layer between the power supply line and the data line, first insulating layer
Thickness is more than preset threshold.
7. oled display substrate as claimed in claim 6, which is characterized in that the preset threshold is 1 micron.
8. oled display substrate as described in claim 1, which is characterized in that the underlay substrate is flexible substrate substrate.
9. oled display substrate as described in claim 1, which is characterized in that including what is set gradually:
The underlay substrate；
Active layer；
Gate insulation layer；
Barrier metal layer, the barrier metal layer include the gate electrode of the driving thin film transistor (TFT)；
Interlayer dielectric layer；
Source and drain metal level, the Source and drain metal level include: the data line and it is described driving thin film transistor (TFT) source electrode and
Drain electrode；
First insulating layer；
The power supply line.
10. a kind of OLED display, including such as the described in any item oled display substrates of claim 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811251329.XA CN109449180A (en) | 2018-10-25 | 2018-10-25 | A kind of oled display substrate and OLED display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811251329.XA CN109449180A (en) | 2018-10-25 | 2018-10-25 | A kind of oled display substrate and OLED display |
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| Publication Number | Publication Date |
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| CN109449180A true CN109449180A (en) | 2019-03-08 |
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| CN201811251329.XA Pending CN109449180A (en) | 2018-10-25 | 2018-10-25 | A kind of oled display substrate and OLED display |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110473883A (en) * | 2019-08-21 | 2019-11-19 | 深圳市华星光电技术有限公司 | Array substrate and OLED display |
| CN112259577A (en) * | 2020-10-09 | 2021-01-22 | 武汉华星光电半导体显示技术有限公司 | Pixel structure |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1541039A (en) * | 2003-02-05 | 2004-10-27 | ����Sdi��ʽ���� | Flat panel display with anode electrode layer as power supply layer and fabrication method thereof |
| CN102709243A (en) * | 2012-05-18 | 2012-10-03 | 京东方科技集团股份有限公司 | Organic light-emitting diode display panel and manufacturing method thereof |
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2018
- 2018-10-25 CN CN201811251329.XA patent/CN109449180A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1541039A (en) * | 2003-02-05 | 2004-10-27 | ����Sdi��ʽ���� | Flat panel display with anode electrode layer as power supply layer and fabrication method thereof |
| CN102709243A (en) * | 2012-05-18 | 2012-10-03 | 京东方科技集团股份有限公司 | Organic light-emitting diode display panel and manufacturing method thereof |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110473883A (en) * | 2019-08-21 | 2019-11-19 | 深圳市华星光电技术有限公司 | Array substrate and OLED display |
| WO2021031245A1 (en) * | 2019-08-21 | 2021-02-25 | Tcl华星光电技术有限公司 | Array substrate and oled display device |
| US11152448B2 (en) | 2019-08-21 | 2021-10-19 | Tcl China Star Optoelectronics Technology Co., Ltd. | Array substrate and OLED display device |
| CN112259577A (en) * | 2020-10-09 | 2021-01-22 | 武汉华星光电半导体显示技术有限公司 | Pixel structure |
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Application publication date: 20190308 |