CN109935729A - OLED display panel and preparation method thereof, display equipment - Google Patents
OLED display panel and preparation method thereof, display equipment Download PDFInfo
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- CN109935729A CN109935729A CN201910208656.5A CN201910208656A CN109935729A CN 109935729 A CN109935729 A CN 109935729A CN 201910208656 A CN201910208656 A CN 201910208656A CN 109935729 A CN109935729 A CN 109935729A
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Abstract
The invention discloses a kind of OLED display panels and preparation method thereof, display equipment, it is related to OLED field of display technology, when solving the edge of OLED display panel in the prior art by external impact, the problem of being easy to appear the crack for generating and extending to the corresponding packaging area in display area, will affect packaging effect.Main technical schemes of the invention are as follows: including substrate；Protective layer, the protective layer are stacked on the substrate, and the protective layer includes first area and the second area around the first area；Display function layer, the display function layer are arranged on the protective layer, and corresponding with the position of the first area；Wherein, annular groove is provided on the surface of the second area, the annular groove is arranged around the external of the first area, and the slot bottom of the annular groove is tip-angled shape, for preventing the second area generation from may extend to the gap of the first area.
Description
Technical field
The present invention relates to OLED field of display technology more particularly to a kind of OLED display panel and preparation method thereof, display
Equipment.
Background technique
Chinese entitled " display of organic electroluminescence " of OLED also known as " organic electro-luminescent display " has actively
Luminous, fast response time, low-voltage driving, power consumption are low, structure of whole solid state, ultra-thin, visual angle is wide, can be used temperature range big etc.
Plurality of advantages is known as " dreamlike display " by industry, represents the developing direction of current display technology.
Flexible OLED display has the characteristics such as low-power consumption, flexible, sets to portable electronic device, wearable electronics
Standby application brings far-reaching influence, replaces glass to make display screen using plastics, so that display screen is more durable, lighter.It is flexible
OLED display screen use thin-film package (TFE), by it is inorganic, ' the alternate mode of organic multilayer, extend steam intrusion path, from
And device is made to achieve the purpose that prevent steam while having flexibility function.
When executing above-mentioned film encapsulation method, at least there are the following problems in the prior art: OLED device for inventor's discovery
Part in use, when display panel edge is by external impact, is easy to appear generation and extends to the corresponding envelope in display area
The crack for filling region, to will affect packaging effect.
Summary of the invention
In view of this, the embodiment of the present invention provides a kind of OLED display panel and preparation method thereof, display equipment, main mesh
Be to be easy to appear generation to extend to display area corresponding when solving the edge of OLED device in the prior art by external impact
Packaging area crack, the problem of will affect packaging effect.
In order to achieve the above objectives, present invention generally provides following technical solutions:
On the one hand, the embodiment of the invention provides a kind of OLED display panel, which includes: substrate；It protects
Sheath, the protective layer are stacked on the substrate, and the protective layer includes first area and circular firstth area
The second area in domain；Display function layer, the display function layer is arranged on the protective layer, and the position with the first area
Set correspondence；Wherein, annular groove is provided on the surface of the second area, the annular groove is set around the outside of the first area
It sets, and the slot bottom of the annular groove is tip-angled shape, for preventing the second area generation from may extend to the seam of the first area
Gap.
Optionally, the annular groove is gradually reduced by the width of notch to slot bottom.
Optionally, the quantity of the annular groove is multiple, and multiple annular grooves are continuously arranged or multiple annular groove intervals are set
It sets.
Optionally, lug boss is formed between the adjacent annular groove, the cross sectional shape of the lug boss is trapezoidal.
Optionally, the quantity of the annular groove is multiple, and multiple annular grooves are arranged in be cut on the second area
The inside of position or multiple annular grooves are correspondingly arranged with position to be cut on the second area.
Optionally, the quantity of the annular groove is one, and position to be cut on the second area is arranged in the annular groove
Inside.
Optionally, the protective layer includes buffer layer and barrier layer.
On the other hand, the embodiment of the present invention also provides a kind of production method of OLED display panel, this method comprises: providing
One substrate；Protective layer is formed on the substrate；The display function is set on the first area of the protective layer；?
The annular groove is prepared on the second area of the protective layer.
On the other hand, the embodiment of the present invention also provides a kind of display equipment, which includes: display apparatus body；
Above-mentioned OLED display panel.
A kind of OLED display panel and preparation method thereof that the embodiment of the present invention proposes, display equipment, setting in substrate and
Protective layer between luminescent layer can cooperate encapsulating structure to be packaged the device of luminescent layer, by the secondth area of protective layer
Annular groove is arranged in domain, sets tip-angled shape for the slot bottom of annular groove, can make to collide when the edge of OLED display panel is collided
The gap perpendicular to orientation substrate is generated along the tip of annular groove slot bottom, which does not extend to packaging area, and second area
For not light emitting region, will not influence the display function of display panel, and solve at frame in the prior art generate extend to
The crack of the corresponding packaging area in display area, the problem of will affect packaging effect.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of OLED display panel provided in an embodiment of the present invention；
Fig. 2 is the structural schematic diagram of another OLED display panel provided in an embodiment of the present invention；
Fig. 3 is the structural schematic diagram of another OLED display panel provided in an embodiment of the present invention；
Fig. 4 is the structural schematic diagram of another OLED display panel provided in an embodiment of the present invention；
Fig. 5 is the structural schematic diagram of another OLED display panel provided in an embodiment of the present invention；
Fig. 6 is a kind of flow diagram of OLED display panel production method provided in an embodiment of the present invention；
Fig. 7 is a kind of photoresist status diagram of OLED display panel production method provided in an embodiment of the present invention.
Specific embodiment
It is of the invention to reach the technical means and efficacy that predetermined goal of the invention is taken further to illustrate, below in conjunction with
Attached drawing and preferred embodiment, it is specific real to OLED display panel proposed according to the present invention and preparation method thereof, display equipment
Mode, structure, feature and its effect are applied, detailed description is as follows.
Embodiment one
The embodiment of the present invention one proposes a kind of OLED display panel, which includes:
As Figure 1-Figure 5, substrate 1, protective layer 3 and display function layer 2, protective layer 2 are stacked on substrate 1, and
Protective layer 3 includes first area and the second area around first area；Display function layer 2, the setting of display function layer 2 are being protected
On sheath 3, and it is corresponding with the position of first area；Wherein, annular groove 4 is provided on the surface of second area, the annular groove 4 is surround
The external setting of first area, and the slot bottom of annular groove 4 is tip-angled shape, for preventing second area generation from may extend to first area
Gap.
Wherein, substrate 1 be the substrate of display panel, be device support section, substrate 1 can be in the prior art soft
Property substrate, such as the material of substrate 1 can be polymeric substrates, ultra thin glass substrates, stainless steel substrate etc., do not do and have herein
Body limitation, substrate 1 flexible can make oled substrate formation have many advantages, such as flexible display panels that are frivolous, durable, can winding.
Luminescent layer includes first area and the second area around first area setting, and first area here corresponds to the aobvious of display panel
Show region, second area corresponds to the non-display area of display panel, i.e. the second area frame region that can be display panel, can
To carry out the operation such as cutting according to specific needs.Display function layer 2 is arranged in the first area of protective layer 3, and display function
Layer 2 includes organic material and the electrode etc. for constituting OLED device, and the device that display function layer 2 includes is for the pollution in atmosphere
Object, steam and oxygen are all very sensitive, are easy to happen electrochemical corrosion in the environment containing steam, oxygen, make to device
At injury, so must be packaged to display function layer 2, substrate 1 flexible can use thin-film package, and thin-film package is adopted more
It is covered on display function layer 2 with the method for organic-inorganic alternating deposit plural layers, entire base is covered on by setting here
The protective layer 3 on the top of plate 1, and thin-film packing structure covers display function layer 2, passes through protective layer 3 and thin-film packing structure
Cooperation may be implemented the whole package of display function layer 2, it is ensured that and the reliability of encapsulation improves the performance of its aqueous vapor barrier,
Extend the service life of device in display function layer 2.
Annular groove 4 is set in the second area of protective layer 3, and annular groove 4 is the annular for being looped around the outside one of first area and enclosing
Groove, that is, the outside of packaging area is set, and the quantity of annular groove 4 can be a circle, multi-turn annular groove also can be set, i.e., from most
The successively extension arrangement outward of the annular groove of inside, when the quantity of annular groove 4 is multiple, the edge of encapsulating structure, which extends to, to be leaned on
On the annular groove 4 of inside, or the inside of annular groove 4 is set.When substrate 1 is cut, need to guarantee at least one circle
The position within cutting line ab is arranged in annular groove 4.Annular groove 4 needs to guarantee that the slot bottom of annular groove 4 is tip-angled shape in setting, here
The wedge angle of tip-angled shape slot bottom is towards 1 direction of substrate, after being arranged in this way, when the edge of display panel is collided, and protective layer 3
Part of the second area around annular groove 4 can be by Impact energy to discharging at annular groove 4, since tip-angled shape slot bottom is arranged
Make to collide and generate gap perpendicular to 1 direction of substrate along tip, such gap does not extend to packaging area, and second area
Crack for not light emitting region, generation will not influence the display function of display panel, and avoids and produce at frame in the prior art
The case where raw crack for extending to the corresponding packaging area in display area.Based on can be realized above-mentioned purpose, annular groove 4 can be with
There are many specific implementation forms, it is intended to and it can prevent second area from generating the gap that may extend to shown first area, annular groove 4
Slot bottom is tip-angled shape, and specific implementation form will be described in detail below.
The embodiment of the present invention proposes a kind of OLED display panel, and the protective layer between substrate and luminescent layer, which is arranged in, to match
It closes encapsulating structure to be packaged the device of luminescent layer, annular groove is arranged by the second area in protective layer, and by the slot of annular groove
Bottom is set as tip-angled shape, can make to collide along the generation of the tip of annular groove slot bottom when the edge of OLED display panel is collided
Perpendicular to the gap of orientation substrate, which does not extend to packaging area, and second area is not light emitting region, be will not influence
The display function of display panel, and solve the crack for extending to packaging area generated at frame in the prior art, it will affect
The problem of packaging effect.
Above-mentioned annular groove 4 can there are many concrete form, as shown in Figs 1-4, annular groove 4 by notch to slot bottom width gradually
Reduce.Here notch refers to the open end of annular groove 4, the bottom of slot bottom finger ring slot 4, since the slot bottom of annular groove 4 is set as wedge angle
Shape can set annular groove 4 to being gradually reduced by the width of notch to slot bottom, be formed with slot bottom tip-angled shape when annular groove 4 is arranged
The horn structure being integrated, i.e. Formation cross-section shape are the groove body of " V " shape.At this point, the cell wall of annular groove 4 can be plane, it can also
To be curved surface.When the quantity of annular groove 4 is multiple, the elevated regions formed between adjacent annular groove 4 are known as lug boss, protrusion
The cross sectional shape in portion can be semicircle, triangle, trapezoidal etc., not do specific limitation here, it is intended to can prevent second
Region generates the gap that may extend to shown first area.
Above-mentioned annular groove 4 can also there are many concrete forms, as shown in figure 5, the width of annular groove 4 is by notch to slot bottom edge
It can be set to equal everywhere.Here notch refers to the open end of annular groove 4, the bottom of slot bottom finger ring slot 4, the width of annular groove 4
Can be equal everywhere by open end to the bottom of annular groove 4, for example, the side wall of annular groove 4 can be parallel to each other, it is optimal, it can make
The cell wall of annular groove 4 can be each perpendicular to the surface of substrate 1, and set tip-angled shape, the point of tip-angled shape slot bottom for the slot bottom of annular groove 4
Angle makes the angular shape of the slot bottom Formation cross-section " V " shape of annular groove 4 towards 1 direction of substrate.Further, it is also possible to only by slot bottom
Middle part is set as tip-angled shape, it is intended to can prevent second area from generating the gap that may extend to shown first area, the slot of annular groove 4
Bottom is horn structure.
The quantity of annular groove 4 is multiple, multiple annular grooves 4 continuously setting or setting of the interval of multiple annular grooves 4.It can be in protective layer 3
Second area in be arranged multi-turn annular groove 4, the energy that when display panel is collided, can hit generation can be by multiple
It is discharged at annular groove 4, multiple annular grooves 4 can share Impact energy, so as to enhance the intensity of protective layer 3.Tool
Body, as shown in figure 4, multi-turn annular groove 4 can be continuously arranged, when annular groove 4 is set as being gradually reduced by the width of notch to slot bottom
" V " shape groove body, and when the cell wall of annular groove 4 is set as plane, continuously setting can make to be formed between adjacent annular groove 4 annular groove 4
The lug boss of triangle；As shown in Figure 1, multi-turn annular groove 4 can also can carry out in certain intervals interval setting, here between
It is equal every can be, be also possible to it is not equal, gap size herein can according to actual needs depending on, do not do herein specific
Limitation, when annular groove 4 is set as the " V " shape groove body being gradually reduced by the width of notch to slot bottom, and the cell wall of annular groove 4 is set as flat
When face, annular groove 4 can make to form trapezoidal lug boss between adjacent annular groove 4 after being arranged at regular intervals.
As shown in Figure 1, forming lug boss 5 between adjacent annular groove 4, the cross sectional shape of lug boss 5 is trapezoidal.When annular groove 4
Quantity setting it is multiple when, annular groove 4 can be made to be spaced apart, the section of the lug boss 5 formed between adjacent annular groove 4 can have
A variety of concrete shapes, for example, can be it is trapezoidal, semicircle, arc-shaped etc., when annular groove 4 is set as by the width of notch to slot bottom
The " V " shape groove body being gradually reduced, and when cell wall is set as plane, annular groove 4 be arranged at regular intervals can make adjacent annular groove it
Between form trapezoidal lug boss 5, be set as the annular groove 4 that section is " V " shape groove body, formed when being continuously arranged compared to annular groove 4
Section is the lug boss 5 of triangle, and section is that trapezoidal lug boss is more convenient when display panel is installed, and section, which is trapezoidal, is
Top does not have cuspidated lug boss 5 to be easier to install and connect, and can have enough intensity, and in connection it is survivable its
His structure.Here pair cross-section shape is that the width of trapezoidal lug boss does not do specific limitation.
As shown in Figure 1 and Figure 2, cutting line ab is surrounded on second area, the region other than cutting line ab is set as cutting
Region is cut, the inside of cutting line ab is arranged at least one annular groove 4.OLED display panel is in production, it will usually in a base
Multiple display panels are made simultaneously on plate 1, are separated again by cutting technique after completing, or according to the frame of display panel
The demands such as of different sizes the case where there is also the cuttings that the later period is carried out to substrate 1, prevent the region of protective layer from generating to reach
It may extend to the technical purpose in the crack of first area (i.e. packaging area), it is necessary to assure the of the display panel retained after cutting
Two regions are still provided with annular groove 4.As shown in figure 3, the quantity of annular groove 4 can be set to one, the quantity for reducing annular groove 4 can drop
The difficulty of low processing prevents the region generation of protective layer from may extend to first area (i.e. when a ring slot 4 is arranged to reach
Packaging area) crack technical purpose, need for annular groove 4 to be arranged in the inside of the position cutting line ab, and it is optimal can will
The edge setting for being located proximate to encapsulating structure of annular groove 4.Multi-turn also can be set in the quantity of annular groove 4, can display panel by
To collision when, hit generation energy can by being discharged at multiple annular grooves 4, multiple annular grooves 4 can to Impact energy into
Row is shared, and so as to enhance the intensity of protective layer 3, when multi-turn annular groove 4 is arranged, needs to guarantee the setting of an at least ring slot 4
In the inside of cutting line ab, certainly, as shown in Fig. 2, whole annular grooves 4 can also be made to be all disposed within the inside of cutting line ab, or
Multi-turn annular groove 4 is distributed in the two sides of cutting line ab.
The quantity of annular groove 4 be it is multiple, the slot bottom position of one of annular groove 4 is corresponding with the position of cutting line ab.Annular groove 4
Quantity multi-turn also can be set, the energy that when display panel is collided, can hit generation can be by multiple annular grooves 4
Place is discharged, and multiple annular grooves 4 can share Impact energy, so as to enhance the intensity of protective layer 3.Specifically,
As shown in Figure 1, multi-turn annular groove 4 can be arranged near cutting line ab, i.e. ring is provided with inside and outside cutting line ab
Slot 4, and the slot bottom position of one of annular groove 4 is corresponding with the position of cutting line ab, i.e. the point that annular groove 4 is arranged in cutting line ab
At the tip location of horn shape slot bottom, it can both guarantee that the frame region of the display panel retained after cutting is provided with annular groove 4 in this way,
It and when carrying out cutting technique, can also be cut along the slot bottom of annular groove 4, easily facilitate cutting, and after capable of guaranteeing cutting
The grazing at edge.
As shown in Figs 1-4, protective layer 3 includes buffer layer 301 and barrier layer 302.Protective layer 3 is used for and thin-film packing structure
Cooperation guarantees the reliability of encapsulation, so protective layer 3 can also be classified as the one of encapsulating structure to realize the package to luminescent layer 2
Part.Protective layer 3 can be made of buffer layer 301 and barrier layer 302, and buffer layer 301 can be set in the upper of barrier layer 302
Side.Wherein, buffer layer 301 can be organic layer, can be formed by the way of printing or vapor deposition.Barrier layer 302 can rise
To the effect for stopping steam, material can be silicon nitride.
Embodiment two
As shown in fig. 6, the production method that the embodiment of the present invention two proposes a kind of OLED display panel, this method comprises:
S1: protective layer 3 is formed on substrate 1.
Specifically, substrate 1 can be completely covered in protective layer 3.Substrate 1 can be any substrate 1 in the prior art, such as
It can be flexible substrate 1, the material of the substrate 1 flexible can be polymeric substrates, ultra thin glass substrates, stainless steel substrate
Etc., it is not particularly limited herein.
S2: display function 2 is set on the first area of protective layer 3.
S3: annular groove 4 is prepared on the second area of protective layer 3.
Specifically, successively successively forming protective layer 3 and display function 2 on substrate 1, display function 2 includes organic material
And the electrode etc. of OLED device being constituted, then make annular groove 4 in the second area of protective layer 3, the position of annular groove 4 can be according to finished product
The size of display panel determine whether need to cut according to substrate 1 and the position of specific cutting line ab determines.
The production method that the embodiment of the present invention proposes a kind of OLED display panel, by this method can make protective layer come
Cooperation encapsulating structure is packaged the device of display function layer, annular groove is arranged by the second area in protective layer, by annular groove
Slot bottom be made as tip-angled shape, can when the edge of substrate is collided, make to collide generated along the tip of annular groove slot bottom it is vertical
In the gap of orientation substrate, which does not extend to packaging area, and second area is not light emitting region, will not influence display
The display function of panel, and solve at the frame of substrate in the prior art generate extend to the corresponding encapsulation region in display area
The crack in domain, the problem of will affect packaging effect.
The annular groove 4 is formed by photoetching process.Annular groove 4 can be formed by photoetching process, specifically, the photoetching process
Specific process are as follows: S31: first production exposure mask.Since the slot bottom of annular groove 4 is set as tip-angled shape, so being covered used here as grayscale
The exposure mask that membrane technology (Graytone Mask), i.e. gray scale are set as gradual change, the transmitance of the bigger light of gray scale is lower, and gray scale is smaller
The transmitance of light is higher, and the irradiation of light can be such that the emulsion of photoresist chemically reacts, and different light levels can make light
Different degrees of chemical change occurs for photoresist, and the part that chemical change occurs can be dissolved in specific developer solution, so logical
Cross the angular shape that the transmitance of gradual change can be gradually reduced with formation width.S32: it is applied on the surface of the second area of protective layer 3
Cloth photoresist.S33: photoresist is exposed and is developed by exposure mask.Specifically, when adjacent annular groove 4 as described above it
Between when forming trapezoidal lug boss, the photoresist state after the exposure development of step S33 is as shown in Figure 7.S34: it is carved
Etching technique forms annular groove 4 in the second area of protective layer.S35: remaining photoresist on removal second area surface.
Embodiment three
The embodiment of the present invention three proposes a kind of display equipment, which includes:
Show apparatus body and above-mentioned OLED display panel.
Display apparatus body can be the electronic equipments having a display function such as mobile phone in the prior art, computer, TV,
And apply above-mentioned OLED display panel.
The embodiment of the present invention proposes a kind of display equipment, annular groove 4 is arranged by the second area in protective layer, by annular groove 4
Slot bottom be set as tip-angled shape, can show apparatus body edge be collided when, make to collide along the tip of 4 slot bottom of annular groove
The gap perpendicular to 1 direction of substrate is generated, which does not extend to packaging area, and second area is not light emitting region, no
It will affect the display function of display apparatus body, and solve and be collided at the frame of display apparatus body in the prior art
Afterwards, the problem of protective layer 3 generates the crack for extending to the corresponding packaging area in display area, will affect packaging effect, Ke Yiyan
The service life of long display apparatus body.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Lid is within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (10)
1. a kind of OLED display panel characterized by comprising
Substrate；
Protective layer, the protective layer are stacked on the substrate, and the protective layer includes first area and surround described
The second area of first area；
Display function layer, the display function layer are arranged on the protective layer, and corresponding with the position of the first area；
Wherein, annular groove is provided on the surface of the second area, the annular groove is arranged around the external of the first area, and
The slot bottom of the annular groove is tip-angled shape, for preventing the second area generation from may extend to the gap of the first area.
2. OLED display panel according to claim 1, which is characterized in that
The quantity of the annular groove be it is multiple, multiple annular grooves are continuously arranged or the setting of multiple annular groove intervals.
3. OLED display panel according to claim 2, which is characterized in that
The annular groove is gradually reduced by the width of notch to slot bottom.
4. OLED display panel according to claim 3, which is characterized in that
Lug boss is formed between the adjacent annular groove, the cross sectional shape of the lug boss is trapezoidal.
5. OLED display panel according to claim 1, which is characterized in that
Cutting line is surrounded on the second area, the region other than the cutting line is set as cutting region, at least one
The inside of the cutting line is arranged in a annular groove.
6. OLED display panel according to claim 5, which is characterized in that
The quantity of the annular groove be it is multiple, the slot bottom position of one of them annular groove is corresponding with the position of the cutting line.
7. OLED display panel according to claim 1, which is characterized in that
The protective layer includes buffer layer and barrier layer.
8. a kind of production method of OLED display panel, applied to the OLED display panel any in claim 1-7,
It is characterized in that, comprising:
Protective layer is formed on the substrate；
The display function layer is set on the first area of the protective layer；
The annular groove is prepared on the second area of the protective layer.
9. the production method of OLED display panel according to claim 8, which is characterized in that
The annular groove is formed by photoetching process.
10. a kind of display equipment characterized by comprising
OLED display panel as described in any in claim 1-7.
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| CN111768703A (en) * | 2020-06-22 | 2020-10-13 | 武汉华星光电半导体显示技术有限公司 | Display panel and preparation method thereof |
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| CN109935729B (en) | 2022-12-06 |
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