CN107507931A - Method for packing, encapsulating structure and the display device of oled display substrate - Google Patents
Method for packing, encapsulating structure and the display device of oled display substrate Download PDFInfo
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- CN107507931A CN107507931A CN201710728989.1A CN201710728989A CN107507931A CN 107507931 A CN107507931 A CN 107507931A CN 201710728989 A CN201710728989 A CN 201710728989A CN 107507931 A CN107507931 A CN 107507931A
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- display substrate
- oled display
- oled
- organic material
- rheological characteristic
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
- H10K50/84—Passivation; Containers; Encapsulations
- H10K50/844—Encapsulations
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- Optics & Photonics (AREA)
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Abstract
The invention provides a kind of method for packing of oled display substrate, encapsulating structure and display device, belong to display technology field.Wherein, the method for packing of oled display substrate, the oled display substrate includes viewing area, is arranged on the barrier structure at oled display substrate edge and the non-display area between the viewing area and the barrier structure, the method for packing is included in printing rheological characteristic organic material in the region that the barrier structure surrounds, before rheological characteristic organic material is printed, the method for packing also includes：The oled display substrate is used to handle with the surface of the rheological characteristic organic material contact so that the rheological characteristic organic material is less than threshold value in the flowing velocity of the non-display area.By technical scheme, the narrow frame of display device can be realized.
Description
Technical field
The present invention relates to display technology field, particularly relate to a kind of method for packing of oled display substrate, encapsulating structure and
Display device.
Background technology
The processing step of existing flexible OLED encapsulating structures mainly includes：Prepare the gate insulation of flexible substrates → making first
Layer → making first grid metal layer image → the second gate insulation layer of making → making second gate metal layer image → making interlayer is exhausted
Edge layer → making Source and drain metal level figure → making flatness layer → making anode → making pixel defining layer → making spacer layer
→ negative electrode → making thinner package film layer is made, wherein thinner package film layer includes the organic film and inorganic thin film being stacked,
It is inkjet printing rheological characteristic organic material in the filling region surrounded in obstacle when preparing organic film, such as acrylic material
Material, rheological characteristic organic material solidifies in filling region forms organic film, because the thickness of organic film is bigger, therefore,
The climbing at its edge is apart from bigger, i.e., bigger the distance between from edge of display area to obstacle, is unfavorable for realizing display
The narrow frame and Rimless of device.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of method for packing of oled display substrate, encapsulating structure and display
Device, the narrow frame of display device can be realized.
In order to solve the above technical problems, embodiments of the invention offer technical scheme is as follows：
On the one hand, there is provided a kind of method for packing of oled display substrate, the oled display substrate include viewing area, set
Put in the barrier structure at oled display substrate edge and non-display between the viewing area and the barrier structure
Region, the method for packing are included in printing rheological characteristic organic material in the region that the barrier structure surrounds, in printing rheology
Before property organic material, the method for packing also includes：
The oled display substrate is used to handle with the surface of the rheological characteristic organic material contact so that described
Rheological characteristic organic material is less than threshold value in the flowing velocity of the non-display area.
Further, it is described that the oled display substrate is used to carry out with the surface of the rheological characteristic organic material contact
Processing includes：
The oled display substrate is made as on the surface of the non-display area rough.
Further, it is described the oled display substrate is made as on the surface of the non-display area it is rough
Including：
The oled display substrate is made as zigzag or wavy on the surface of the non-display area.
Further, it is described that the oled display substrate is used to carry out with the surface of the rheological characteristic organic material contact
Processing includes：
The water-repellent layer of at least partly described non-display area of covering is formed on the surface of the oled display substrate.
Further, described formed on the surface of the oled display substrate covers at least partly described non-display area
Water-repellent layer includes：
The water-repellent layer of the whole non-display areas of covering is formed on the surface of the oled display substrate.
Further, the water-repellent layer is made of silicon oxynitride.
The embodiment of the present invention additionally provides a kind of encapsulating structure of oled display substrate, including oled display substrate and covering
The organic film of the oled display substrate, the oled display substrate include viewing area, are arranged on oled display substrate side
The barrier structure of edge and the non-display area between the viewing area and the barrier structure, the OLED show base
Plate enables to flowing of the rheological characteristic organic material in the non-display area for the surface that is contacted with the organic film
Speed is less than threshold value.
Further, the oled display substrate is rough on the surface of the non-display area.
Further, the surface of the oled display substrate is provided with the hydrophobic of at least partly described non-display area of covering
Layer.
The embodiment of the present invention additionally provides a kind of display device, includes the encapsulation knot of oled display substrate as described above
Structure.
Embodiments of the invention have the advantages that：
In such scheme, before printing rheological characteristic organic material in the region that barrier structure surrounds, base is shown to OLED
Plate is used to be handled with the surface of rheological characteristic organic material contact so that flowing of the rheological characteristic organic material in non-display area
Speed is less than threshold value so that the rheological characteristic organic material of non-display area is not easy to flow, and contributes to rheological characteristic organic material more
Organic film is formed with regard to solidification before crossing barrier structure, so as to reduce the design between viewing area edge and barrier structure
Distance, you can by the narrow of the width design of non-display area, to be advantageously implemented the narrow frame of display device.
Brief description of the drawings
Fig. 1 is the structural representation of existing oled display substrate；
Fig. 2 is the schematic diagram of the encapsulating structure of existing oled display substrate；
Fig. 3 is the schematic diagram of the encapsulating structure of one embodiment of the invention oled display substrate；
Fig. 4 is the schematic diagram that the embodiment of the present invention prepares water-repellent layer on the first inorganic thin film；
Fig. 5 is the schematic diagram for the mask plate that the embodiment of the present invention makes water-repellent layer；
Fig. 6 is schematic diagram of the border without departing from water-repellent layer of organic film of the embodiment of the present invention；
Fig. 7 is the schematic diagram that the embodiment of the present invention shortens distance between viewing area edge and barrier structure；
Fig. 8 is the schematic diagram for the narrow frame that the embodiment of the present invention realizes display device.
Reference
1 underlay substrate
2 interlayer insulating films
3 flatness layers
4 barrier structures
5 first inorganic thin films
6 mask plates
7 openings
8 water-repellent layers
9 organic films
10 second inorganic thin films
Embodiment
To make embodiments of the invention technical problems to be solved, technical scheme and advantage clearer, below in conjunction with
Drawings and the specific embodiments are described in detail.
The processing step of existing flexible OLED encapsulating structures mainly includes：Prepare the gate insulation of flexible substrates → making first
Layer → making first grid metal layer image → the second gate insulation layer of making → making second gate metal layer image → making interlayer is exhausted
Edge layer → making Source and drain metal level figure → making flatness layer → making anode → making pixel defining layer → making spacer layer
→ negative electrode → making thinner package film layer is made, as depicted in figs. 1 and 2, wherein 1 is the underlay substrate of oled display substrate, 2 be layer
Between insulating barrier, 3 be flatness layer, and 4 be barrier structure, and 5 be the first inorganic thin film 5, covers the thinner package film layer of oled display substrate
Including the inorganic thin film 10 of organic film 9 and second being stacked, when preparing organic film 3, surrounded in barrier structure 4
Inkjet printing rheological characteristic organic material in filling region, such as acrylic material, rheological characteristic organic material in filling region from
Dynamic levelling solidifies to form organic film 3, and because the thickness of organic film 3 is bigger, therefore, the climbing distance at its edge compares
Greatly, as shown in Fig. 2 i.e. the distance between 4 D1 are bigger from viewing area edge to barrier structure, it is unfavorable for realizing display device
Narrow frame and Rimless.
In order to solve the above problems, embodiments of the invention provide a kind of method for packing of oled display substrate, encapsulation knot
Structure and display device, the narrow frame of display device can be realized.
The embodiment of the present invention provides a kind of method for packing of oled display substrate, and the oled display substrate includes viewing area
Domain, the barrier structure for being arranged on oled display substrate edge and non-between the viewing area and the barrier structure
Viewing area, the method for packing are included in printing rheological characteristic organic material in the region that the barrier structure surrounds, printed
Before rheological characteristic organic material, the method for packing also includes：
The oled display substrate is used to handle with the surface of the rheological characteristic organic material contact so that described
Rheological characteristic organic material is less than threshold value in the flowing velocity of the non-display area.
In the present embodiment, before printing rheological characteristic organic material in the region that barrier structure surrounds, base is shown to OLED
Plate is used to be handled with the surface of rheological characteristic organic material contact so that flowing of the rheological characteristic organic material in non-display area
Speed is less than threshold value so that the rheological characteristic organic material of non-display area is not easy to flow, and contributes to rheological characteristic organic material more
Organic film is formed with regard to solidification before crossing barrier structure, so as to reduce the design between viewing area edge and barrier structure
Distance, you can by the narrow of the width design of non-display area, to be advantageously implemented the narrow frame of display device.
In one specific embodiment, the table being used for the oled display substrate with the rheological characteristic organic material contact
Face, which carries out processing, to be included：
The oled display substrate is made as on the surface of the non-display area rough.
In embodiment as shown in Figure 3, due to being the formation organic film 3 on the first inorganic thin film 5, i.e., first is inorganic thin
Film 5 contacts with organic film 3, therefore, it is necessary to the first inorganic thin film 5 is made as on the surface of non-display area uneven
, so in the filling region inkjet printing rheological characteristic organic material limited to barrier structure, rough surface has
Beneficial to the flow velocity for reducing rheological characteristic organic material, so as to contribute to rheological characteristic organic material just to be solidified before barrier structure is crossed
Organic film is formed, so as to reduce the designed distance between viewing area edge and barrier structure, you can with will be non-display
The width design in region it is narrow, D3 will be much smaller than D1 it can be seen from Fig. 2 and Fig. 3, therefore be advantageously implemented display device
Narrow frame.
Further, it is described the oled display substrate is made as on the surface of the non-display area it is rough
Including：
The oled display substrate is made as zigzag or wavy on the surface of the non-display area.
As shown in figure 3, oled display substrate can be made as zigzag, certainly, OLED on the surface of non-display area
Display base plate can also be made as other rough structures on the surface of non-display area.
It is described that the oled display substrate is used for and the rheological characteristic organic material contact in another specific embodiment
Surface, which carries out processing, to be included：
The water-repellent layer of at least partly described non-display area of covering is formed on the surface of the oled display substrate.
In the present embodiment, the water-repellent layer of covering at least part non-display area is provided with the surface of oled display substrate,
When being packaged to oled display substrate in oled display substrate surface inkjet printing rheological characteristic organic material, due to water-repellent layer
With hydrophobicity, the rheological characteristic organic material above water-repellent layer can be caused to be not easy to flow, it is organic to advantageously reduce rheological characteristic
The flow velocity of material, so as to contribute to rheological characteristic organic material to form organic film with regard to solidification before barrier structure is crossed, so as to
The designed distance between viewing area edge and barrier structure can be reduced, you can with by the ratio of the width design of non-display area
It is narrower, it is advantageously implemented the narrow frame of display device.
Further, described formed on the surface of the oled display substrate covers at least partly described non-display area
Water-repellent layer includes：
The water-repellent layer of the whole non-display areas of covering is formed on the surface of the oled display substrate.
Specifically, non-display area can be completely covered in water-repellent layer, be so packaged to oled display substrate
During the inkjet printing rheological characteristic organic material of oled display substrate surface, the rheological characteristic organic material positioned at non-display area is not easy to flow
It is dynamic, the flow velocity of rheological characteristic organic material is advantageously reduced, so as to contribute to rheological characteristic organic material before barrier structure is crossed
Organic film is formed with regard to solidification.
Specifically, the water-repellent layer can be made of silicon oxynitride, and certainly, water-repellent layer can also be had using other hates
Water-based material is made.
As shown in figure 4, before printing rheological characteristic organic material on the first inorganic thin film 5, can utilize as shown in Figure 5
Mask plate 6 forms the opening that water-repellent layer 8,7 is mask plate, opening 7 and the hydrophobic to be formed of mask plate on the first inorganic thin film 5
The position correspondence in the region of layer 8, the method for chemical vapor deposition can be used to form water-repellent layer 8.After water-repellent layer 8 is formed,
The interfacial state on the surface of water-repellent layer 8 is different from the interfacial state on oled display substrate other parts surface, in the presence of surface tension,
Enable to the rheological characteristic organic material on water-repellent layer 8 to be not easy to flow, advantageously reduce rheological characteristic organic material on water-repellent layer 8
Flow velocity, as shown in fig. 6, rheological characteristic organic material can be caused not flow to other regions on water-repellent layer 8, i.e. organic film 9
Therefore border, as shown in fig. 7, in design, can save part corresponding to D2, shorten aobvious without departing from the scope of water-repellent layer 8
Show distance between edges of regions and barrier structure so that distance is D3 between viewing area edge and barrier structure, by Fig. 2 and figure
7 as can be seen that D3 will be much smaller than D1, therefore be advantageously implemented the narrow frame of display device.It is frozen into rheological characteristic organic material
After organic film 3, as shown in figure 8, the second inorganic thin film 10 can be formed on organic film 3, you can complete OLED and show
The encapsulation of substrate.
The embodiment of the present invention additionally provides a kind of encapsulating structure of oled display substrate, including oled display substrate and covering
The organic film of the oled display substrate, the oled display substrate include viewing area, are arranged on oled display substrate side
The barrier structure of edge and the non-display area between the viewing area and the barrier structure, the OLED show base
Plate enables to flowing of the rheological characteristic organic material in the non-display area for the surface that is contacted with the organic film
Speed is less than threshold value.
In the present embodiment, before printing rheological characteristic organic material in the region that barrier structure surrounds, base is shown to OLED
Plate is used to be handled with the surface of rheological characteristic organic material contact so that flowing of the rheological characteristic organic material in non-display area
Speed is less than threshold value so that the rheological characteristic organic material of non-display area is not easy to flow, and contributes to rheological characteristic organic material more
Organic film is formed with regard to solidification before crossing barrier structure, so as to reduce the design between viewing area edge and barrier structure
Distance, you can by the narrow of the width design of non-display area, to be advantageously implemented the narrow frame of display device.
In one specific embodiment, the oled display substrate is rough on the surface of the non-display area.Such as
In embodiment shown in Fig. 3, due to be on the first inorganic thin film 5 formation organic film 3, i.e. the first inorganic thin film 5 with it is organic
Film 3 contacts, therefore, it is necessary to the first inorganic thin film 5 is made as on the surface of non-display area it is rough, so to
During the filling region inkjet printing rheological characteristic organic material that barrier structure limits, rough surface advantageously reduces rheology
Property organic material flow velocity, so as to contribute to rheological characteristic organic material before barrier structure is crossed with regard to solidification formed it is organic thin
Film, so as to reduce the designed distance between viewing area edge and barrier structure, you can with by the width of non-display area
That designs is narrow, and D3 will be much smaller than D1 it can be seen from Fig. 2 and Fig. 3, therefore be advantageously implemented the narrow frame of display device.
In another specific embodiment, the surface of the oled display substrate is provided with least partly described non-display area of covering
The water-repellent layer in domain.
In the present embodiment, the water-repellent layer of covering at least part non-display area is provided with the surface of oled display substrate,
When being packaged to oled display substrate in oled display substrate surface inkjet printing rheological characteristic organic material, due to water-repellent layer
With hydrophobicity, the rheological characteristic organic material above water-repellent layer can be caused to be not easy to flow, it is organic to advantageously reduce rheological characteristic
The flow velocity of material, so as to contribute to rheological characteristic organic material to form organic film with regard to solidification before barrier structure is crossed, so as to
The designed distance between viewing area edge and barrier structure can be reduced, you can with by the ratio of the width design of non-display area
It is narrower, it is advantageously implemented the narrow frame of display device.
Specifically, non-display area can be completely covered in water-repellent layer, be so packaged to oled display substrate
During the inkjet printing rheological characteristic organic material of oled display substrate surface, the rheological characteristic organic material positioned at non-display area is not easy to flow
It is dynamic, the flow velocity of rheological characteristic organic material is advantageously reduced, so as to contribute to rheological characteristic organic material before barrier structure is crossed
Organic film is formed with regard to solidification.
As shown in figure 4, before printing rheological characteristic organic material on the first inorganic thin film 5, can utilize as shown in Figure 5
Mask plate 6 forms the opening that water-repellent layer 8,7 is mask plate, opening 7 and the hydrophobic to be formed of mask plate on the first inorganic thin film 5
The position correspondence in the region of layer 8, the method for chemical vapor deposition can be used to form water-repellent layer 8.After water-repellent layer 8 is formed,
The interfacial state on the surface of water-repellent layer 8 is different from the interfacial state on oled display substrate other parts surface, in the presence of surface tension,
Enable to the rheological characteristic organic material on water-repellent layer 8 to be not easy to flow, advantageously reduce rheological characteristic organic material on water-repellent layer 8
Flow velocity, as shown in fig. 6, rheological characteristic organic material can be caused not flow to other regions on water-repellent layer 8, i.e. organic film 9
Therefore border, as shown in fig. 7, in design, can save part corresponding to D2, shorten aobvious without departing from the scope of water-repellent layer 8
Show distance between edges of regions and barrier structure so that distance is D3 between viewing area edge and barrier structure, by Fig. 2 and figure
7 as can be seen that D3 will be much smaller than D1, therefore be advantageously implemented the narrow frame of display device.It is frozen into rheological characteristic organic material
After organic film 3, as shown in figure 8, the second inorganic thin film 10 can be formed on organic film 3, you can complete OLED and show
The encapsulation of substrate.
The embodiment of the present invention additionally provides a kind of display device, includes the encapsulation knot of oled display substrate as described above
Structure.The display device can be：TV, display, DPF, mobile phone, tablet personal computer etc. are any with display function
Product or part, wherein, the display device also includes flexible PCB, printed circuit board (PCB) and backboard.
Unless otherwise defined, the technical term or scientific terminology that the disclosure uses, which are should be in art of the present invention, to be had
The ordinary meaning that the personage for having general technical ability is understood." first ", " second " and the similar word used in the disclosure is simultaneously
Any order, quantity or importance are not indicated that, and is used only to distinguish different parts." comprising " or "comprising" etc.
Either object covers the element or object for appearing in the word presented hereinafter to the element that similar word means to occur before the word
And its it is equivalent, and it is not excluded for other elements or object.The similar word such as " connection " or " connected " is not limited to physics
Or mechanical connection, but electrical connection can be included, it is either directly or indirect." on ", " under ",
"left", "right" etc. is only used for representing relative position relation, and after the absolute position for being described object changes, then the relative position is closed
System may also correspondingly change.
It is appreciated that ought the element of such as layer, film, region or substrate etc be referred to as "above" or "below" another element
When, the element can be " direct " "above" or "below" another element, or there may be intermediary element.
Described above is the preferred embodiment of the present invention, it is noted that for those skilled in the art
For, on the premise of principle of the present invention is not departed from, some improvements and modifications can also be made, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (10)
1. a kind of method for packing of oled display substrate, the oled display substrate, which includes viewing area, is arranged on OLED shows
The barrier structure of substrate edges and the non-display area between the viewing area and the barrier structure, the encapsulation
Method is included in printing rheological characteristic organic material in the region that the barrier structure surrounds, it is characterised in that in printing rheological characteristic
Before organic material, the method for packing also includes：
The oled display substrate is used to handle with the surface of the rheological characteristic organic material contact so that the rheology
Property organic material is less than threshold value in the flowing velocity of the non-display area.
2. the method for packing of oled display substrate according to claim 1, it is characterised in that described to be shown to the OLED
Substrate carries out processing for the surface with the rheological characteristic organic material contact to be included：
The oled display substrate is made as on the surface of the non-display area rough.
3. the method for packing of oled display substrate according to claim 2, it is characterised in that described to show the OLED
Substrate be made as on the surface of the non-display area it is rough including：
The oled display substrate is made as zigzag or wavy on the surface of the non-display area.
4. the method for packing of oled display substrate according to claim 1, it is characterised in that described to be shown to the OLED
Substrate carries out processing for the surface with the rheological characteristic organic material contact to be included：
The water-repellent layer of at least partly described non-display area of covering is formed on the surface of the oled display substrate.
5. the method for packing of oled display substrate according to claim 4, it is characterised in that described to be shown in the OLED
The water-repellent layer that the surface of substrate forms at least partly described non-display area of covering includes：
The water-repellent layer of the whole non-display areas of covering is formed on the surface of the oled display substrate.
6. the method for packing of oled display substrate according to claim 4, it is characterised in that the water-repellent layer uses nitrogen oxygen
SiClx is made.
7. a kind of encapsulating structure of oled display substrate, including oled display substrate and cover the organic of the oled display substrate
Film, the oled display substrate include viewing area, are arranged on the barrier structure at oled display substrate edge and positioned at institute
State the non-display area between viewing area and the barrier structure, it is characterised in that
The oled display substrate enables to rheological characteristic organic material in institute for the surface that is contacted with the organic film
The flowing velocity for stating non-display area is less than threshold value.
8. the encapsulating structure of oled display substrate according to claim 7, it is characterised in that the oled display substrate exists
The surface of the non-display area is rough.
9. the encapsulating structure of oled display substrate according to claim 7, it is characterised in that the oled display substrate
Surface is provided with the water-repellent layer of at least partly described non-display area of covering.
10. a kind of display device, it is characterised in that including oled display substrate as claimed in any one of claims 7-9
Encapsulating structure.
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| CN201710728989.1A CN107507931A (en) | 2017-08-23 | 2017-08-23 | Method for packing, encapsulating structure and the display device of oled display substrate |
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