CN109166461A - Display panel and its manufacturing method and display device - Google Patents
Display panel and its manufacturing method and display device Download PDFInfo
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- CN109166461A CN109166461A CN201811163425.9A CN201811163425A CN109166461A CN 109166461 A CN109166461 A CN 109166461A CN 201811163425 A CN201811163425 A CN 201811163425A CN 109166461 A CN109166461 A CN 109166461A
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- Prior art keywords
- display panel
- barrier bodies
- optical cement
- optical
- adhesive layer
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/301—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED
Abstract
The present invention relates to a kind of display panel and its manufacturing methods and display device.Display panel includes laminated film piece and the optical adhesive layer between adjacent diaphragms, and optical adhesive layer includes optical cement and the barrier bodies to separate at least partly optical cement, and barrier bodies are embedded in optical cement.Using the display panel of technical solution of the present invention, since optical cement has been embedded in barrier bodies, when display panel bending, barrier bodies hinder the flowing of the optical cement of close position, the ulking thickness of optical cement is reduced, so as to mitigate the accumulation degree of optical cement, optical cement forms fold when display panel being avoided to bend, it is bad to avoid showing, be conducive to apply.Additionally it is possible to be released effectively stress when display panel bending, and increase crooked process radius.
Description
Technical field
The present invention relates to field of display technology, fill more particularly to a kind of display panel and its manufacturing method and display
It sets.
Background technique
With the development of display technology, demand of the consumer to the high-quality of display panel is increasing.However, traditional
Display panel in the process of bending, be easy to cause display bad, is unfavorable for applying.
Summary of the invention
Based on this, it is necessary to which for how avoiding showing bad problem, providing one kind, to can be avoided display undesirable aobvious
Show panel and its manufacturing method and display device.
A kind of display panel, the display panel include laminated film piece and the optics between the adjacent diaphragms
Glue-line, the optical adhesive layer include optical cement and the barrier bodies to separate at least partly described optical cement, the barrier bodies
It is embedded in the optical cement.
Projection of the optical cement on the side of the display panel in one of the embodiments, covers the barrier
Projection of the body on the side of the display panel.
The number of the barrier bodies is at least two in one of the embodiments, and at least two barrier bodies phases
It is mutually independent；
Preferably, projected area of the barrier bodies on the optical adhesive layer surface is 0.01mm2~4mm2。
The display panel includes central area and the side positioned at the central area two sides in one of the embodiments,
Edge region is greater than the close of the barrier bodies positioned at the fringe region positioned at the density of the barrier bodies of the central area
Degree.
The display panel further includes the display layer group positioned at the diaphragm side in one of the embodiments, described
Display layer group has light emitting region, and the orthographic projection of the barrier bodies deviates the light emitting region.
The material of the barrier bodies is the UV glue after solidifying in one of the embodiments,.
A kind of manufacturing method of display panel is also provided, is included the following steps:
Optical adhesive layer is formed on a diaphragm of the display panel, attaches another film in the optical adhesive layer later
Piece obtains display panel；Wherein, the optical adhesive layer includes optical cement and the resistance to separate at least partly described optical cement
Spacer, the barrier bodies are embedded in the optical cement.
Include the following steps: in one of the embodiments,
It is formed on a diaphragm of the display panel to obtain the barrier bodies of at least partly described optical cement partition
Diaphragm with barrier bodies；And
Optical cement is formed on the diaphragm with barrier bodies, another diaphragm is attached later, obtains display panel；Its
In, the diaphragm of the optical cement and two sides abuts against.
Include the following steps: in one of the embodiments,
Optical adhesive layer mould group is provided, the optical adhesive layer mould group includes weight release film layer, light release film layer, positioned at described heavy
Optical adhesive layer between release film layer and the light release film layer；The optical adhesive layer includes optical cement and to will at least partly
The barrier bodies of the optical cement partition, the barrier bodies are embedded in the optical cement；And
The heavy release film layer and the light release film layer are removed, the optical adhesive layer is attached at the adjacent of modular structure
Between two diaphragms, display panel is obtained；
Preferably, the manufacturing method of the optical adhesive layer mould group includes the following steps:
It is formed on the heavy release film layer to obtain that there is resistance for the barrier bodies of at least partly described optical cement partition
The heavy release film layer of spacer；And
Optical cement is formed on the heavy release film layer with barrier bodies, the light release film layer is attached later, obtains
Optical adhesive layer mould group；Wherein, the optical cement and the heavy release film layer of two sides, light release film layer abut against.
In addition, a kind of display device is also provided, including above-mentioned display panel.
Using the display panel and its manufacturing method and display device of technical solution of the present invention, since optical cement is embedded
Enter there are barrier bodies, when display panel bending, barrier bodies hinder the flowing of the optical cement of close position, reduce optical cement
Ulking thickness, so as to mitigate the accumulation degree of optical cement, optical cement forms fold when display panel being avoided to bend, to keep away
Exempt to cause to show bad, is conducive to apply.Additionally it is possible to be released effectively stress when display panel bending, and increase curved
Diameter by half.
Detailed description of the invention
Fig. 1 is the schematic diagram of the display panel of an embodiment of the present invention；
Fig. 2 is the floor map of optical adhesive layer in the display panel of an embodiment of the present invention；
Fig. 3 is the side schematic view of optical adhesive layer in the display panel of another embodiment of the present invention；
Fig. 4 is the floor map of optical adhesive layer in the display panel of another embodiment of the present invention；
Fig. 5 is the schematic diagram of the display panel of another embodiment of the present invention.
Specific embodiment
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, with reference to the accompanying drawing to the present invention
Specific embodiment be described in detail.Many details are explained in the following description in order to fully understand this hair
It is bright.But the invention can be embodied in many other ways as described herein, those skilled in the art can be not
Similar improvement is done in the case where violating intension of the present invention, therefore the present invention is not limited by the specific embodiments disclosed below.
It should be noted that it can directly on the other element when element is referred to as " being fixed on " another element
Or there may also be elements placed in the middle.When an element is considered as " connection " another element, it, which can be, is directly connected to
To another element or it may be simultaneously present centering elements.Term as used herein " vertical ", " horizontal ", " left side ",
" right side " and similar statement are for illustrative purposes only.
Unless otherwise defined, all technical and scientific terms used herein and belong to technical field of the invention
The normally understood meaning of technical staff is identical.Term as used herein in the specification of the present invention is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.Term " and or " used herein includes one or more phases
Any and all combinations of the listed item of pass.
Traditional display panel in the process of bending, be easy to cause and shows bad problem.The present inventor is in reality
It is found during trampling, the bonding of each layer is completed by OCA (optical cement) in AMOLED product mould group technique, and OCA thickness is generally 10 μ
M~90 μm, even several hundred microns etc., this is in comparison blocked up with entire soft screen thickness；When display panel is bent, nothing is deformed
Method, which is released, leads to unequal power distribution, stress is discharged in the form of fold in a thickness direction, especially at TP (touch screen)
OCA between POL (polaroid) forms fold, not only will affect the crooked process radius of flexible screen, it is also possible to other film layers be caused to split
Line.
For this purpose, the present invention proposes that one kind can be avoided the undesirable display panel of display and its manufacturing method and display dress
It sets.
Wherein, display panel of the invention can for OLED (Organic Light-Emitting Diode) or
AMOLED (Active-matrix organic light-emitting diode, active matrix organic light-emitting diode) display
Screen.Further, display screen can be flexible display screen.
Referring to Figure 1, the display panel 100 of an embodiment includes display layer group 110, is covered above display layer group 110
There are two or more than two diaphragms 120.There is the optical adhesive layer 130 engaged with diaphragm 120 between two neighboring diaphragm 120.
Wherein, display layer group 110 may include substrate 111, multiple light emitting pixels 112 on substrate 111 and for encapsulating light emitting
The encapsulated layer 113 of pixel 112.Diaphragm 120 can be polaroid 121 and cover board 122.
It should be noted that the position of optical adhesive layer of the invention is unlimited, the optical adhesive layer of any position in display panel
It all belongs to the scope of protection of the present invention.
As shown in Figure 1, the display panel 100 of an embodiment of the present invention is including laminated film piece 120 and is in adjacent membranes
Optical adhesive layer 130 between piece 120, optical adhesive layer 130 is including optical cement 131 and will at least partly optical cement 131 separate
Barrier bodies 132, barrier bodies 132 be embedded in optical cement 131 in.
Wherein, optical cement can be the glue classes such as acrylic resin, modified polymethyl acid resin or epoxy polyester.
The thickness of optical cement is preferably 30 μm~150 μm.
Wherein, the effect of barrier bodies of the invention is to separate at least partly optical cement.Specifically, barrier bodies can be embedded in
Any position of optical cement, as long as the optical cement of part can be separated.For example, barrier bodies can be embedded in the table of optical cement
Layer, can also be embedded in the inside of optical cement.Preferably, the thickness of optical cement is more than or equal to the thickness of barrier bodies, so that light
The smooth surface for learning glue avoids the attaching for influencing two latallaes.
On the basis of aforementioned embodiments, Fig. 2 is referred to, the number of barrier bodies 132 is at least two, and at least two
Barrier bodies 132 are mutually indepedent.That is, at least two barrier bodies 132 are discrete.Therefore, at least two barrier bodies
132 projected area on 130 surface of optical adhesive layer is identical and at least two barrier bodies 132 are that continuous situation is compared, this reality
It applies in mode, the contact area between several barrier bodies 132 and optical cement 131 is larger, so as to when display screen is bent
It hinders more optical cement 131 to flow, largely mitigates accumulation degree.
Preferably, projected area of the barrier bodies 132 on 130 surface of optical adhesive layer is 0.01mm2~4mm2.Certainly, it obstructs
Projected area of the body 132 on 130 surface of optical adhesive layer is not limited.
Fig. 3 is referred to, the display panel of another embodiment of the present invention includes optical adhesive layer 230.Optical adhesive layer 230 includes
Optical cement 231 and the barrier bodies 232 to separate at least partly optical cement 231.In present embodiment, optical cement 231 is aobvious
Show projection of the projection covering barrier bodies 232 on the side of display panel on the side of panel, and barrier bodies 232 are from optical cement
231 surface extends through optical cement 231.
Wherein, the side of display panel refers to the surface of the extending direction perpendicular to display panel.
In present embodiment, barrier bodies 232 can completely separate optical cement 231, when display panel bending, barrier bodies
232 have obstructed the flowing of the optical cement 231 of close position completely, to effectively mitigate the accumulation degree of optical cement 231, avoid showing
Optical cement forms fold when showing panel bending, effectively avoids showing bad.
Certainly, in other embodiments, barrier bodies also can be not through optical cement.At this point, the thickness of barrier bodies is less than light
The thickness of glue is learned, optical cement is covered in barrier bodies.
Refer to Fig. 4, the display panel of another embodiment of the present invention includes central area 310 and is located at central area
The fringe region 320 of 310 two sides is greater than the resistance positioned at fringe region 320 positioned at the density of the barrier bodies 330 of central area 310
The density of spacer 330.
When display screen is bent by external force, the usual bending radius of curvature in central area 310 of display screen is larger, by center
Domain 310 is gradually reduced to 320 bending radius of curvature of fringe region.Inventors have found that being arranged in the central area of display screen 310 close
Biggish barrier bodies 330 are spent, the separation of diaphragm caused by can be avoided because of optical cement extruding accumulation.And in the fringe region of display screen
320, the lesser barrier bodies 330 of density can be set, to increase the zygosity between adjacent two diaphragm.In central area 310
To the transitional region 340 between fringe region 320, radius of curvature when due to display screen bending is gradually reduced, can also be based on
The lesser barrier bodies 330 of the situation density of setting.
Fig. 5 is referred to, the display panel 400 of another embodiment of the present invention includes display layer group 410.Wherein, display layer
Group 410 may include substrate 411, multiple light emitting pixels 412 on substrate 411 and the envelope for encapsulating light emitting pixel 412
Fill layer 413.Two or more diaphragms 420 are covered with above display layer group 410.Diaphragm 420 can be 421 He of polaroid
Cover board 422.There is the optical adhesive layer 430 engaged with diaphragm 420 between two neighboring diaphragm 420.Optical adhesive layer 430 includes optics
Glue 431 and the barrier bodies 432 to separate at least partly optical cement 431, barrier bodies 432 are embedded in optical cement 431.
Wherein, display layer group 410 has light emitting region, and the orthographic projection of barrier bodies 432 deviates light emitting region.Specifically,
The light emitting region of display layer group 410 refers to that display layer group 410 is equipped with the region of light emitting pixel 412.In order to avoid the influence of barrier bodies 432
The light that light emitting pixel 412 projects, therefore, the orthographic projection of barrier bodies 432 deviate light emitting region.Here orthographic projection refers to barrier bodies
432 along 400 stacking direction of display panel projection.The display panel 400 can to avoid optical adhesive layer 430 thickness not to shine
Light causes to reflect, to ensure that the display effect of display panel 400.
On the basis of aforementioned embodiments, the material of barrier bodies is the UV glue after solidifying.On the one hand, the UV glue after solidification
With certain hardness, inhibition can be played to the flowing of optical cement；On the other hand, the translucency of the UV glue after solidification compared with
It is good, it will not influence luminescent properties.
It should be noted that the material of barrier bodies is without being limited thereto, other materials with certain hardness and translucency are equal
It can.For example, transparent polyethylene, polypropylene or polyvinyl chloride etc..
In addition, in display panel of the invention, projection of the barrier bodies on optical adhesive layer surface can for round, bar shaped or
Person is rectangular.It is, of course, also possible to be other shapes.For example, projection of the barrier bodies on optical adhesive layer surface can also be screen frame shape
Or dendroid etc..
Using the display panel of technical solution of the present invention, since optical cement has been embedded in barrier bodies, when display panel is bent
When, barrier bodies hinder the flowing of the optical cement of close position, the ulking thickness of optical cement are reduced, so as to mitigate optics
The accumulation degree of glue, optical cement forms fold when display panel being avoided to bend, to avoid showing bad, is conducive to answer
With.Additionally it is possible to be released effectively stress when display panel bending, and increase crooked process radius.
The present invention also provides a kind of manufacturing methods of display panel, include the following steps:
Optical adhesive layer is formed on a diaphragm of display panel, another diaphragm is attached in optical adhesive layer later, is shown
Show panel；Wherein, optical adhesive layer includes optical cement and the barrier bodies to separate at least partly optical cement, and barrier bodies are embedded in light
It learns in glue.
On the basis of aforementioned embodiments, the manufacturing method of display panel includes the following steps:
S10, formation is had to the barrier bodies for separating at least partly optical cement on a diaphragm of display panel
The diaphragm of barrier bodies.
It is formed on a diaphragm of display panel to the operation for the barrier bodies for separating at least partly optical cement are as follows: use
Silk-screen printing, inkjet printing (IJP) or dispensing (Dispenser) technique are formed on a diaphragm of display panel near
The barrier bodies of small part optical cement partition.
S20, optical cement is formed on the diaphragm with barrier bodies, attach another diaphragm later, obtain display panel；Its
In, the diaphragm of optical cement and two sides abuts against.
Wherein it is possible to form optical cement precursor on the diaphragm with barrier bodies using coating process, solidification is obtained later
Optical cement.Specifically, slot coated device can be used when coating.It can be using low pressure mercury lamp irradiation solidification, high pressure when solidification
Hg lamp irradiation solidification or the solidification of metal halogen light irradiation.
On the basis of aforementioned embodiments, the manufacturing method of display panel includes the following steps:
S100, provide optical adhesive layer mould group, optical adhesive layer mould group include weight release film layer, light release film layer, be located at weight from
Optical adhesive layer between type film layer and light release film layer；Optical adhesive layer include optical cement and to will at least partly optical cement separate
Barrier bodies, barrier bodies be embedded in optical cement in.
Preferably, the manufacturing method of optical adhesive layer mould group includes the following steps:
S110, formation obtains having barrier to the barrier bodies for separating at least partly optical cement on weight release film layer
The heavy release film layer of body.
Wherein, an embodiment is formed to the barrier bodies of separating at least partly optical cement on weight release film layer
Operation are as follows: sprayed using IJP, by the way of the UV glue of silk-screen printing, reach 1000mw/cm through metal halide lamp2~3000mw/
cm2Illumination (300~400nm of wavelength) is formed by curing 10 μm~100 μm of thickness of barrier bodies.
S120, optical cement is formed on the heavy release film layer with barrier bodies, attaches light release film layer later, obtains optics
Glue-line mould group；Wherein, optical cement and the heavy release film layer of two sides, light release film layer abut against.
The operation that optical cement is formed on the heavy release film layer with barrier bodies of one embodiment are as follows: use coating process
Optical cement precursor is formed on the heavy release film layer with barrier bodies, solidifies obtain the optics with a thickness of 30 μm~150 μm later
Glue.
More preferably, the thickness of optical cement is 10 μm~50 μm bigger than the thickness of barrier bodies.
S200, weight release film layer and light release film layer are removed, optical adhesive layer is attached to the two neighboring film of modular structure
Between piece, display panel is obtained.
Optical adhesive layer can be attached between adjacent diaphragms by present embodiment, and it is more convenient to operate.
Using the manufacturing method of the display panel of technical solution of the present invention, since optical cement has been embedded in barrier bodies, when aobvious
When showing panel bending, barrier bodies hinder the flowing of the optical cement of close position, reduce the ulking thickness of optical cement, so as to
Enough mitigate optical cement accumulation degree, when display panel being avoided to bend optical cement formed fold, thus avoid showing it is bad,
Be conducive to apply.Additionally it is possible to be released effectively stress when display panel bending, and increase crooked process radius.
The present invention also provides the display devices of an embodiment, including above-mentioned display panel.
Using the display device of technical solution of the present invention, since the optical cement in display panel has been embedded in barrier bodies, when
When display panel is bent, barrier bodies hinder the flowing of the optical cement of close position, reduce the ulking thickness of optical cement, thus
The accumulation degree that can reduce optical cement, optical cement forms fold when display panel being avoided to bend, to avoid display not
It is good, be conducive to apply.Additionally it is possible to be released effectively stress when display panel bending, and increase crooked process radius.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to protection of the invention
Range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (10)
1. a kind of display panel, which is characterized in that the display panel include laminated film piece and in the adjacent diaphragms it
Between optical adhesive layer, the optical adhesive layer includes optical cement and to by the barrier bodies of at least partly optical cement partition, institute
Barrier bodies are stated to be embedded in the optical cement.
2. display panel according to claim 1, which is characterized in that the optical cement is on the side of the display panel
Projection cover the projection of the barrier bodies on the side of the display panel.
3. display panel according to claim 1, which is characterized in that the number of the barrier bodies is at least two, and extremely
Few two barrier bodies are mutually indepedent；
Preferably, projected area of the barrier bodies on the optical adhesive layer surface is 0.01mm2~4mm2。
4. display panel described in any one of claim 1 to 3, which is characterized in that the display panel includes center
Region and fringe region positioned at the central area two sides, the density positioned at the barrier bodies of the central area are greater than position
In the density of the barrier bodies of the fringe region.
5. display panel described in any one of claim 1 to 3, which is characterized in that the display panel further includes position
Display layer group in the diaphragm side, the display layer group have light emitting region, described in the orthographic projections of the barrier bodies deviates
Light emitting region.
6. display panel according to claim 1, which is characterized in that the material of the barrier bodies is the UV glue after solidifying.
7. a kind of manufacturing method of display panel, which comprises the steps of:
Optical adhesive layer is formed on a diaphragm of the display panel, another diaphragm is attached in the optical adhesive layer later, obtains
To display panel；Wherein, the optical adhesive layer includes optical cement and to by the barrier bodies of at least partly optical cement partition,
The barrier bodies are embedded in the optical cement.
8. the manufacturing method of display panel according to claim 7, which comprises the steps of:
It is formed on a diaphragm of the display panel to be had the barrier bodies of at least partly described optical cement partition
The diaphragm of barrier bodies；And
Optical cement is formed on the diaphragm with barrier bodies, another diaphragm is attached later, obtains display panel；Wherein, institute
The diaphragm for stating optical cement and two sides abuts against.
9. the manufacturing method of display panel according to claim 7, which comprises the steps of:
Optical adhesive layer mould group is provided, the optical adhesive layer mould group includes weight release film layer, light release film layer, positioned at described heavy release
Optical adhesive layer between film layer and the light release film layer；The optical adhesive layer includes optical cement and to will be at least partly described
The barrier bodies of optical cement partition, the barrier bodies are embedded in the optical cement；And
The heavy release film layer and the light release film layer are removed, the optical adhesive layer is attached at the two neighboring of modular structure
Between diaphragm, display panel is obtained；
Preferably, the manufacturing method of the optical adhesive layer mould group includes the following steps:
It is formed on the heavy release film layer to obtain the barrier bodies of at least partly described optical cement partition with barrier bodies
Heavy release film layer；And
Optical cement is formed on the heavy release film layer with barrier bodies, the light release film layer is attached later, obtains optics
Glue-line mould group；Wherein, the optical cement and the heavy release film layer of two sides, light release film layer abut against.
10. a kind of display device, which is characterized in that including display panel such as according to any one of claims 1 to 6.
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| CN111179774A (en) * | 2020-01-21 | 2020-05-19 | 深圳市艾比森光电股份有限公司 | LED display module and LED display screen |
| CN112242094A (en) * | 2019-07-16 | 2021-01-19 | 上海和辉光电有限公司 | Flexible display screen module |
| CN114038323A (en) * | 2021-11-22 | 2022-02-11 | 武汉华星光电半导体显示技术有限公司 | Display module, manufacturing method thereof and display device |
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