CN206432292U - A kind of display base plate and display device - Google Patents
A kind of display base plate and display device Download PDFInfo
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- CN206432292U CN206432292U CN201720168370.5U CN201720168370U CN206432292U CN 206432292 U CN206432292 U CN 206432292U CN 201720168370 U CN201720168370 U CN 201720168370U CN 206432292 U CN206432292 U CN 206432292U
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- base plate
- protective layer
- display base
- negative electrode
- display
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Abstract
The utility model is related to a kind of display base plate and display device, to solve existing OLED display panel, during the plain conductor overlap joint of thin metal electrode and backboard, easily breaks at the edge overlapped each other, the problem of causing the yield of product and reduce.The display base plate includes：Underlay substrate, the OLED being arranged on underlay substrate and the protective layer with conductive characteristic；The negative electrode of OLED has certain overlapping region with corresponding cathode leg；Protective layer is arranged on the side for deviating from underlay substrate on negative electrode, and at least covered cathode produces the region of segment difference in overlapping region.The utility model is provided with one layer of protective layer with conductive characteristic above OLED; at least covered cathode and the segment difference region most easily broken in the overlapping region of corresponding cathode leg; thus when negative electrode breaks; protective layer can play the effect of conduction; and then the transmission of signal is ensure that, improve the yield of product.
Description
Technical field
The utility model is related to display base plate technical field, more particularly to a kind of display base plate and display device.
Background technology
OLED (Organic Light Emitting Diode, Organic Light Emitting Diode) display device, due to certainly
It is luminous, without backlight module, contrast and definition height, wide visual angle, all solidstate, suitable for flexibility panel, good temp characteristic,
Low-power consumption, fast response time and a series of low excellent specific properties of manufacturing cost, have become flat display apparatus of new generation
One of prior development direction, therefore it is increasingly subject to increasing concern.
At present, gradually popularized using products such as the cell phone of OLED display panel, TVs, and it is aobvious for general OLED
Show panel, in order to ensure that aperture opening ratio is sufficiently large, it will usually use in emission structure at top, emission structure at top and generally use transparent material
The electrode being located above luminescent layer is made, the transparency electrode of most products in the market is using the preparation of thin metal
Into, and thin metal electrode is in the thicker plain conductor overlap joint with backboard, because thin metal electrode is too thin, can easily with gold
The overlapping edge of category wire breaks, and causing the yield of product reduces.If transparency electrode is done too thick, its transmitance can be bright
Aobvious reduction, so that the light extraction efficiency of oled panel can be influenceed.
In summary, existing OLED display panel, during the plain conductor overlap joint of thin metal electrode and backboard, is being weighed mutually
Folded edge easily breaks, and causes the yield of product and reduces.
Utility model content
The purpose of this utility model is to provide a kind of display base plate and display device, to solve existing OLED display surfaces
Plate, during the plain conductor overlap joint of thin metal electrode and backboard, easily breaks at the edge overlapped each other, causes the yield of product
The problem of reduction.
A kind of display base plate that the utility model embodiment is provided, including：Underlay substrate, is arranged on the underlay substrate
OLED and protective layer with conductive characteristic；Wherein,
The negative electrode of the OLED has certain overlapping region with corresponding cathode leg, and in the overlapping region
It is electrically connected；
The protective layer sets the side for deviating from the underlay substrate on the cathode, and at least covers the negative electrode and exist
The region of segment difference is produced in the overlapping region.
Preferably, directly contacting connection between the negative electrode and the cathode leg；Or,
Insulating barrier is provided between the negative electrode and the cathode leg, and is electrically connected by via.
Preferably, the overlapping region is arranged on the non-display area of the display base plate, the figure of the protective layer is only
It is arranged on the non-display area.
Preferably, close to the edge of the viewing area side of the display base plate in the protective layer, with the viewing area
The distance between the edge in domain is not less than 30 microns.
Preferably, the thickness of the protective layer is 20 nanometers -200 nanometers.
Preferably, the material of the protective layer is metal material.
Preferably, the material of the protective layer is identical with the material of the negative electrode.
Preferably, the material of the protective layer is magnesium silver alloy, silver or aluminium.
Preferably, the display base plate is the substrate of emission structure at top.
The utility model embodiment additionally provides a kind of display device, and the display device is carried including the utility model embodiment
Display base plate described in any of the above-described of confession.
The utility model has the beneficial effect that：
Display base plate and display device that the utility model embodiment is provided, there is provided one layer has above OLED
The protective layer of conductive characteristic, the protective layer at least being capable of covered cathode and most easy broken string in the overlapping region of corresponding cathode leg
Segment difference region, thus when negative electrode breaks, protective layer can play the effect of conduction, and then ensure that the biography of signal
It is defeated, improve the yield of product.
Brief description of the drawings
A kind of basic structure schematic diagram for display base plate that Fig. 1 provides for the utility model embodiment；
The structure for the display base plate that Fig. 2 is connected for the negative electrode that the utility model embodiment is provided with cathode leg by via
Schematic diagram.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out
Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of the utility model, be not whole realities
Apply example.Based on the embodiment in the utility model, those of ordinary skill in the art institute under the premise of creative work is not made
The every other embodiment obtained, belongs to the scope of the utility model protection.
Wherein, film thickness and region shape do not reflect its actual proportions in accompanying drawing, and purpose is schematically illustrate practicality
New content.
The display base plate that the utility model embodiment is provided, is existing mainly for the display base plate of OLED structure
On the basis of display base plate, one layer of protective layer with conductive characteristic is provided with above OLED, the protective layer can be
When negative electrode in OLED breaks, the effect of conduction is played, and then ensures the transmission of signal, the yield of product is improved.
The concrete structure of display base plate is described in detail below.
As shown in figure 1, a kind of basic structure schematic diagram of the display base plate provided for the utility model embodiment, the display
Substrate includes：Underlay substrate 100, is arranged on the OLED 101 on underlay substrate 100 and the protective layer with conductive characteristic
102；Wherein, the negative electrode 1011 of OLED 101 has certain overlapping region B with corresponding cathode leg 103, and overlapping
Region B is electrically connected；Protective layer 102 is arranged on the side for deviating from underlay substrate 100 on negative electrode 1011, and at least covered cathode
1011 produce the region B ' of segment difference in the B of overlapping region.
It should be noted that the OLED that the utility model embodiment is provided includes anode, luminescent layer, pixel defining layer
With negative electrode etc., only it is the structural representation of a feasible simple OLED in Fig. 1, can also be arranged as required to as it
Its structure；In addition, each pixel cell in display base plate also includes TFT (Thin Film Transistor, film crystal
Pipe) etc. element, its structure is identical with structure in the prior art, is repeated no more in place of repeating.
Specifically, because the negative electrode of OLED in emission structure at top is generally transparent thin metal electrode, due to thin gold
Category electrode is too thin, easily can break in overlapping with cathode leg and generation segment difference region, preferably, display base plate is to push up
The substrate of emitting structural.But do not represent the display base plate of the utility model embodiment and be only applicable to a kind of top emitting this structure,
It can also expand to according to actual needs in the display base plate of other structures.Fig. 1 in the utility model embodiment, also simply with one
It is introduced exemplified by the structure for planting feasible display base plate, is not used to limit the utility model.
In the specific implementation, because the negative electrode 1011 of OLED 101 is generally transparent thin metal electrode, and negative electrode
1011 need for its power supply or transmission signal, thus negative electrode 1011 with corresponding cathode leg 103 to have by cathode leg 103
The part region that certain overlapping region B, such as Fig. 1 negative electrodes 1011 are snapped on cathode leg 103 is overlapping region B, and
And overlapping region B realizes the electrical connection between negative electrode 1011 and cathode leg 103.
Specifically, in order to preferably play electric action when disconnection problem occurs in negative electrode, protective layer 102 not only will
With conductive characteristic, and need to be arranged on the top of negative electrode 1011 in OLED, i.e. negative electrode 1011 away from underlay substrate
100 side, is fully contacted with negative electrode.In addition, in display base plate as shown in Figure 1, typically drawing in negative electrode 1011 and negative electrode
The gradient is larger in the overlapping region of line 103, and the relatively thin region of cathode layer, i.e. negative electrode 1011 produce the area of segment difference in the B of overlapping region
Domain B ' places, the problem of negative electrode is easier to break, thus protective layer at least overlay area B '.
The part-structure schematic diagram of display base plate shown in above-mentioned Fig. 1, simply display base plate, purpose is only intended to illustrate
The relative position of each film layer, is not used to limit the utility model, the particular location of each film layer, size, and size etc. can be with
It is configured according to actual needs, and the mode being electrically connected between negative electrode and cathode leg can also be set as needed
Put.Described in detail below for electrical connection different between negative electrode and cathode leg.
Generally, it in actual fabrication, can directly be contacted between negative electrode and cathode leg, via can also be passed through
Connection, preferably, directly contacting connection between negative electrode and cathode leg；Or, it is provided with insulating barrier between negative electrode and cathode leg,
And be electrically connected by via.
As shown in figure 1, wherein negative electrode is directly snapped into above cathode leg, both are electrically connected by directly contacting,
Negative electrode completely covers cathode leg in Fig. 1, can also be arranged as required to directly contact with cathode leg for negative electrode, but negative electrode
There is certain distance with the outward flange of cathode leg.
As shown in Fig. 2 the display base being connected for the negative electrode that the utility model embodiment is provided with cathode leg by via
Pixel defining layer in the structural representation of plate, figure between negative electrode and cathode leg is not removed, that is, negative electrode and negative electrode
Insulating barrier is provided between lead, both are connected by via, but because negative electrode is relatively thin, is formd at the fringe region of via
Segment difference, it is easier to the problem of breaking, thus protective layer is covered the region B ' for producing segment difference；Either such as Fig. 2 institutes
Show the full via of filling, then can avoid the problem of negative electrode produces broken string.
In the specific implementation, the lead of general negative electrode is arranged in the frame non-display area of display base plate, corresponding weight
The figure of folded region and protective layer also is located at non-display area, preferably, overlapping region is arranged on the non-display area of display base plate
Domain, the figure of protective layer is provided only on non-display area.
Although protective layer is generally located on non-display area, in order to not influence the normal display of display base plate, it is impossible to
By protective layer set it is excessive, to prevent its light-emitting zone covered in OLED, preferably, in protective layer close to display
The edge of the viewing area side of substrate, is not less than 30 microns with the distance between the edge of viewing area.Specifically, such as Fig. 1
With shown in Fig. 2, the left side of display base plate is viewing area A, and the distance between the edge of protective layer and viewing area A edge are
D, d value are not less than 30 microns.
In the specific implementation, in order that protective layer it is not excessive increase display base plate thickness, while can be sent out in negative electrode again
Electric action is played during raw broken string, preferably, the thickness of protective layer is 20 nanometers -200 nanometers.The protective layer one that the thickness refers to
As position set thickness, as shown in Figure 1；And as shown in Fig. 2 when protective layer needs to be filled into via, being filled into via
In protective layer, the increase that its thickness can be appropriate.
In the specific implementation, the material of protective layer can be chosen as needed, due to needing it to have conductive spy
Property, thus metal oxide or metal material can be selected, preferably, the material of protective layer is metal material.And in order to save
Cost of manufacture is saved, can continue to make protective layer using the material for making negative electrode, preferably, the material and the material of negative electrode of protective layer
Material is identical.Specifically, the metal material of protective layer can select the metal material for being commonly used to fabricate wire or electrode, preferably
, the material of protective layer is magnesium silver alloy, silver or aluminium.
Based on same design, a kind of display device is additionally provided in the utility model embodiment, the display device includes this
Any display base plate provided in utility model embodiment.The display device can be：Mobile phone, tablet personal computer, television set, display
Any product or part with display function such as device, notebook computer, DPF, navigator.Due to the display device solution
Certainly the principle of problem is similar to a kind of display base plate of the utility model embodiment, therefore the implementation of the display device may refer to show
Show the implementation of substrate, repeat part and repeat no more.
In summary, the utility model embodiment is provided display base plate and display device, are set above OLED
One layer there is conductive characteristic protective layer, the protective layer is at least capable of the overlapping region of covered cathode and corresponding cathode leg
In the segment difference region most easily broken, thus when negative electrode breaks, protective layer can play the effect of conduction, and then ensure that
The transmission of signal, improves the yield of product.
Obviously, those skilled in the art can carry out various changes and modification without departing from this practicality to the utility model
New spirit and scope.So, if these modifications and variations of the present utility model belong to the utility model claim and
Within the scope of its equivalent technologies, then the utility model is also intended to comprising including these changes and modification.
Claims (10)
1. a kind of display base plate, it is characterised in that including：Underlay substrate, be arranged on OLED on the underlay substrate and
Protective layer with conductive characteristic；Wherein,
The negative electrode of the OLED has certain overlapping region with corresponding cathode leg, and is carried out in the overlapping region
Electrical connection；
The protective layer sets the side for deviating from the underlay substrate on the cathode, and at least covers the negative electrode described
The region of segment difference is produced in overlapping region.
2. display base plate as claimed in claim 1, it is characterised in that directly contacted between the negative electrode and the cathode leg
Connection；Or,
Insulating barrier is provided between the negative electrode and the cathode leg, and is electrically connected by via.
3. display base plate as claimed in claim 1, it is characterised in that the overlapping region is arranged on the non-of the display base plate
Viewing area, the figure of the protective layer is provided only on the non-display area.
4. display base plate as claimed in claim 3, it is characterised in that close to the display of the display base plate in the protective layer
The edge of region side, is not less than 30 microns with the distance between the edge of the viewing area.
5. display base plate as claimed in claim 1, it is characterised in that the thickness of the protective layer is 20 nanometers -200 nanometers.
6. display base plate as claimed in claim 1, it is characterised in that the material of the protective layer is metal material.
7. display base plate as claimed in claim 6, it is characterised in that the material phase of the material of the protective layer and the negative electrode
Together.
8. the display base plate as described in claim any one of 6-7, it is characterised in that the material of the protective layer is that magnesium silver is closed
Gold, silver or aluminium.
9. the display base plate as described in claim any one of 1-7, it is characterised in that the display base plate is emission structure at top
Substrate.
10. a kind of display device, it is characterised in that the display device includes the display base any one of claim 1-9
Plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720168370.5U CN206432292U (en) | 2017-02-23 | 2017-02-23 | A kind of display base plate and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720168370.5U CN206432292U (en) | 2017-02-23 | 2017-02-23 | A kind of display base plate and display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206432292U true CN206432292U (en) | 2017-08-22 |
Family
ID=59590129
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201720168370.5U Active CN206432292U (en) | 2017-02-23 | 2017-02-23 | A kind of display base plate and display device |
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| Country | Link |
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| CN (1) | CN206432292U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108963110A (en) * | 2017-10-13 | 2018-12-07 | 广东聚华印刷显示技术有限公司 | electroluminescent device and its preparation method and application |
| CN109860232A (en) * | 2017-11-30 | 2019-06-07 | 乐金显示有限公司 | Electroluminescence display device |
-
2017
- 2017-02-23 CN CN201720168370.5U patent/CN206432292U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108963110A (en) * | 2017-10-13 | 2018-12-07 | 广东聚华印刷显示技术有限公司 | electroluminescent device and its preparation method and application |
| CN108963110B (en) * | 2017-10-13 | 2020-09-18 | 广东聚华印刷显示技术有限公司 | Electroluminescent device and preparation method and application thereof |
| CN109860232A (en) * | 2017-11-30 | 2019-06-07 | 乐金显示有限公司 | Electroluminescence display device |
| CN109860232B (en) * | 2017-11-30 | 2023-07-04 | 乐金显示有限公司 | Electroluminescent display device |
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