CN110136573A - Display screen and preparation method thereof, electronic equipment - Google Patents
Display screen and preparation method thereof, electronic equipment Download PDFInfo
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- CN110136573A CN110136573A CN201910371959.9A CN201910371959A CN110136573A CN 110136573 A CN110136573 A CN 110136573A CN 201910371959 A CN201910371959 A CN 201910371959A CN 110136573 A CN110136573 A CN 110136573A
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- transparent adhesive
- adhesive tape
- optical transparent
- deaeration
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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
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Abstract
The embodiment of the present application provides a kind of display screen and preparation method thereof, electronic equipment.The display screen includes display panel and cover board, the display panel and the cover board pass through the transparent glue connection of UV-cure optical, the one side that the display panel is connected with the cover board has blind hole, and the display panel being sequentially stacked, UV-cure optical transparent adhesive tape and cover board constitute screen assembly；The UV-cure optical transparent adhesive tape includes first area and second area, and the blind hole is located in range corresponding to the first area；The UV-cure optical transparent adhesive tape of the second area and the UV-cure optical transparent adhesive tape of the first area solidify respectively.The segment difference that the display screen of the present embodiment can be formed blind hole is sufficient filling with.
Description
Technical field
This application involves technical field of electronic equipment, set in particular to a kind of display screen and preparation method thereof, electronics
It is standby.
Background technique
The application belongs to the relevant technologies relevant to the application for the description of background technique, be only used for explanation and just
In the application content for understanding the application, it should not be construed as applicant and be specifically identified to or estimate applicant being considered the application for the first time
The prior art for the applying date filed an application.
With the development of science and technology, electronic equipment is used widely in fields such as work, lives.Display screen is electronic equipment
Important component.User has intuitive impression to the display effect of display screen.
In the preparation process of display screen, deaeration can remove the sky between Optical transparent adhesive and display component and cover board
Gas guarantees the consistent of light transmission rate.Since display module side is provided with blind hole, such as camera shooting head bore sometimes.The blind hole can shape
At segment difference, deaeration is influenced, causes deaeration in hole incomplete, reduces the yield of display screen.
Summary of the invention
The embodiment of the present application provides a kind of display screen and preparation method thereof, electronic equipment, can be improved the de- of display screen
Steep effect.
In a first aspect, the display screen includes display panel and cover board, the display this application provides a kind of display screen
Panel and the cover board are by the transparent glue connection of UV-cure optical, the one side that the display panel is connected with the cover board
With blind hole, display panel, UV-cure optical transparent adhesive tape and the cover board being sequentially stacked constitute screen assembly；Wherein
The UV-cure optical transparent adhesive tape includes first area and second area, and the blind hole is located at firstth area
In range corresponding to domain；
The UV-cure optical transparent adhesive tape of the second area and the UV-cure optical of the first area are transparent
Glue solidifies respectively.
Second aspect, this application provides a kind of display screen preparation method, the display screen includes display panel and cover board,
By the transparent glue connection of UV-cure optical, the display panel is connected with the cover board for the display panel and the cover board
The one side connect has blind hole, and the display panel being sequentially stacked, UV-cure optical transparent adhesive tape and cover board constitute screen assembly, institute
Stating UV-cure optical transparent adhesive tape includes first area and second area, and the blind hole is located at the corresponding model in the first area
In enclosing, which comprises
The screen assembly is subjected to the first vacuum defoamation at a temperature of the first deaeration；
The UV-cure optical transparent adhesive tape of the second area is solidified；
The screen assembly is subjected to the second vacuum defoamation at a temperature of the second deaeration, the second deaeration temperature is greater than institute
State the first deaeration temperature；
The UV-cure optical transparent adhesive tape of the first area is solidified.
The third aspect, the embodiment of the present application provide a kind of electronic equipment, and the electronic equipment includes above-described embodiment
Display screen.
Display screen provided by the embodiments of the present application includes display panel and cover board, and the display panel passes through with the cover board
The transparent glue connection of UV-cure optical, the one side that the display panel is connected with the cover board have blind hole, are sequentially stacked
Display panel, UV-cure optical transparent adhesive tape and cover board constitute screen assembly；The UV-cure optical transparent adhesive tape packet
First area and second area are included, the blind hole is located in range corresponding to the first area；The second area it is ultraviolet
Line solidifies Optical transparent adhesive and the UV-cure optical transparent adhesive tape of the first area solidifies respectively.Institute in the embodiment of the present application
The UV-cure optical transparent adhesive tape of the UV-cure optical transparent adhesive tape and the first area of stating second area solidifies respectively,
The UV-cure optical transparent adhesive tape that first area may be implemented is sufficient filling with blind hole, while reducing excessive glue problem.
Detailed description of the invention
Fig. 1 a shows the structural decomposition diagram before the fitting of one embodiment of display screen of the application；
Fig. 1 b shows the structural decomposition diagram before the deaeration of one embodiment of display screen of the application；
Fig. 2 shows an embodiments of display screen after the first vacuum defoamation step in the display screen preparation method of the application
Structural schematic diagram；
Fig. 3 shows the portion A enlarged diagram in Fig. 2；
Fig. 4 shows the top surface structure schematic diagram of an embodiment of the application display screen；
The summit portion that Fig. 5 shows an embodiment of the application display screen block after structural schematic diagram；
Fig. 6 shows in the display screen preparation method of the application an embodiment of display screen after the second vacuum defoamation step
Structural schematic diagram；
Fig. 7 shows the portion B enlarged diagram in Fig. 6；
The summit portion that Fig. 8 shows an embodiment of the application display screen block after structural schematic diagram；
The summit portion that Fig. 9 shows an embodiment of the application display screen block after structural schematic diagram；
Figure 10 shows the top surface structure schematic diagram of an embodiment of the application display screen；
Figure 11 shows the top surface structure schematic diagram of an embodiment of the application display screen；
Figure 12 is the structural schematic diagram of an embodiment of the application electronic equipment.
Specific embodiment
The application is described in further detail combined with specific embodiments below, but not as the restriction to the application.?
In following the description, what different " embodiment " or " embodiment " referred to is not necessarily the same embodiment.In addition, one or more are implemented
Special characteristic, structure or feature in example can be combined by any suitable form.
The embodiment of the present application provides a kind of display screen.Referring to Fig. 1, Fig. 2, Fig. 4, Fig. 6 and Fig. 7, in the embodiment of the present application
Display screen 100 may include display panel 110 and cover board 120, display panel 110 and cover board 120 pass through ultraviolet curing light
It learns transparent adhesive tape 130 to connect, the one side that display panel 110 is connected with cover board 120 has blind hole 111.Referring to fig. 2, it is sequentially stacked
Display panel 110, UV-cure optical transparent adhesive tape 130 and cover board 120 constitute screen assembly；Referring to fig. 4, ultraviolet curing
Optical transparent adhesive 130 includes first area 131 and second area 132, and blind hole 111 is located in range corresponding to first area 131；
The UV-cure optical transparent adhesive tape 130 of second area 132 and the UV-cure optical transparent adhesive tape 130 of first area 131 divide
Do not solidify.
Display screen 100 provided by the embodiments of the present application includes display panel 110 and cover board 120, display panel 110 and cover board
120 are connected by UV-cure optical transparent adhesive tape 130, and the one side that display panel 110 is connected with cover board 120 has blind hole
111, display panel 110, UV-cure optical transparent adhesive tape 130 and the cover board 120 being sequentially stacked constitute screen assembly；Ultraviolet light
Solidifying Optical transparent adhesive 130 includes first area 131 and second area 132, and blind hole 111 is located at the corresponding model in first area 131
In enclosing；The UV-cure optical transparent adhesive tape 130 of second area 132 and the UV-cure optical transparent adhesive tape of first area 131
130 solidify respectively.The UV-cure optical transparent adhesive tape 130 of second area 132 and first area 131 in the embodiment of the present application
UV-cure optical transparent adhesive tape 130 solidifies respectively, and the UV-cure optical transparent adhesive tape 130 of first area 131 may be implemented
Blind hole 111 is sufficient filling with, while reducing excessive glue problem.The embodiment of the present application solves UV-cure optical transparent adhesive tape 130
Improve the contradiction of mobility and excessive glue problem.
In the embodiment of the present application, UV-cure optical transparent adhesive tape 130 can be divided into two regions, be also possible to be divided into
More than two regions.In exemplary embodiment, UV-cure optical transparent adhesive tape 130 divides for first area 131 and the secondth area
132 two, domain region, second area 132 are other regions except first area 131.UV-cure optical transparent adhesive tape 130
It is divided into two regions, can solidifies respectively, gradually reduces the area of uncured UV-cure optical transparent adhesive tape 130, it can be with
Deaeration temperature is improved, increases the mobility of uncured UV-cure optical transparent adhesive tape 130, blind hole 111 is sufficient filling with, together
When can also avoid the problem that UV-cure optical transparent adhesive tape 130 is whole and be easy excessive glue at relatively high temperatures.
In some embodiments, the UV-cure optical transparent adhesive tape 130 of second area 132 and first area 131 it is ultraviolet
Line solidification Optical transparent adhesive 130 solidifies respectively includes: after screen assembly carries out the first vacuum defoamation at a temperature of the first deaeration, the
The UV-cure optical transparent adhesive tape 130 in two regions 132 is solidified；It is true that screen assembly carries out second at a temperature of the second deaeration
After empty deaeration, the UV-cure optical transparent adhesive tape 130 of first area 131 is solidified；Second vacuum defoamation is in second area
After 132 UV-cure optical transparent adhesive tape 130 is solidified；Second deaeration temperature is greater than the first deaeration temperature.
By the first vacuum defoamation, the deaeration in the region except blind hole 111 may be implemented.It is true Fig. 2 and Fig. 3 show first
The structural schematic diagram of display screen after empty deaeration.Referring to figs. 2 and 3, due to 111 segment difference of blind hole, blind hole 111 cannot be filled out completely
It fills, forms bubble 150.Solidify by the UV-cure optical transparent adhesive tape 130 to second area 132, it can be by the area
The optical clear adhesive curing in domain maintains existing deaeration achievement.Fig. 6 and Fig. 7 shows the structure of display screen after the second vacuum defoamation
Schematic diagram.Uncured portion (example is improved by carrying out the second vacuum defoamation at a temperature of the second deaeration referring to Fig. 6 and Fig. 7
Such as, first area 131) UV-cure optical transparent adhesive tape 130 mobility, fill UV-cure optical transparent adhesive tape 130
Divide filling blind hole 111, improves deaeration effect.Due to solidifying respectively, the ultraviolet light of uncured portion (for example, first area 131)
Solidify Optical transparent adhesive 130 area reduce, while can to avoid because temperature increase due to caused by excessive glue problem.
In the embodiment of the present application, the first vacuum defoamation can carry out a wheel, can also carry out two-wheeled or two-wheeled or more.Second
Vacuum defoamation can carry out a wheel, can also carry out two-wheeled or two-wheeled or more.
In the embodiment of the present application, when UV-cure optical transparent adhesive tape 130 divides for more than two regions, it is also possible to pair
Multiple regions solidify respectively.It can be and finally the UV-cure optical transparent adhesive tape 130 of first area 131 is solidified.
6. display screen according to claim 3, which is characterized in that the UV-cure optical transparent adhesive tape of second area 132
Carrying out solidification includes:
First area is blocked with shading piece；
The UV-cure optical transparent adhesive tape of second area 132 carries out ultraviolet curing.
7. display screen according to claim 6, which is characterized in that shading piece includes shading gummed paper and shading electrostatic paster.
8. the method according to claim 1, which is characterized in that the area of first area accounts for UV-cure optical transparent adhesive tape
Area 10%-40%.
9. the method according to claim 1, which is characterized in that it is saturating that second area 132 includes at least UV-cure optical
The one week region in gelatin edge.
10. the method according to claim 1, which is characterized in that the edge of blind hole is far from the edge of first area at least 1mm.
11. display screen according to claim 1, which is characterized in that display panel includes polaroid, is had on polaroid logical
Hole, the polaroid and UV-cure optical transparent adhesive tape of display panel are bonding, the shape on a display panel of the through-hole on polaroid
At blind hole.
In the embodiment of the present application, the first vacuum defoamation can be conventional vacuum defoamation.First vacuum defoamation can be
It is carried out under room temperature.UV-cure optical transparent adhesive tape 130 carries out conventional vacuum defoamation at normal temperature, and matrix (quilt can be realized
Cover board 120 in cohesive body, such as the application) deaeration between plane and UV-cure optical transparent adhesive tape 130, implement more
It is convenient.For example, the value range of the first deaeration temperature can be 20 DEG C -35 DEG C.For example, the first deaeration temperature can for 23 DEG C,
25,28,30 or 33 DEG C etc..It generally is not required to that specially temperature is adjusted, it is de- that the environment temperature of production can meet the first vacuum
The temperature (the first deaeration temperature) of bubble.UV-cure optical transparent adhesive tape 130 suitable for display screen within this temperature range, leads to
Crossing conventional high pressure deaeration can be completed the deaeration operation of first stage.
In the embodiment of the present application, first when the second deaeration temperature when the second vacuum defoamation is higher than the first vacuum defoamation is de-
Steep temperature.The mobility of UV-cure optical transparent adhesive tape 130 can be improved in second deaeration temperature, keeps UV-cure optical saturating
Gelatin 130 is sufficient filling with blind hole 111, guarantees deaeration effect.In exemplary embodiment, the value model of the second deaeration temperature
Enclose is 55 DEG C -70 DEG C.For example, the second deaeration temperature can be 58 DEG C, 60 DEG C, 62 DEG C, 65 DEG C, 68 DEG C etc..Second deaeration temperature
While the mobility for improving UV-cure optical transparent adhesive tape 130 is sufficient filling with blind hole 111, it is thus also avoided that due to
Temperature excessively high the problems such as causing excessive glue.
It certainly, can also be to the first deaeration temperature and the second deaeration temperature under the guidance of general principle disclosed in the present application
The value of degree is adjusted.
In the embodiment of the present application, when the first vacuum defoamation, should there are enough deaeration pressure and time etc., complete planar portions
Divide the deaeration of (the outer part that blind hole 111 etc. forms segment difference section point).In some embodiments, the deaeration pressure of the first vacuum defoamation
Value range be 0.3MPa-0.4MPa.In the pressure limit, the deaeration of planar section can be completed.
In the embodiment of the present application, the time of the first vacuum defoamation can be according to pressure, model of Optical transparent adhesive etc. come
It determines.In some embodiments, the time of the first vacuum defoamation can be 5min-20min.For example, the time of the first vacuum defoamation
It can be 10min, 15min etc..First vacuum defoamation 10min or so, planar section can be completed, and (blind hole 111 etc. forms segment difference
Part except part) deaeration.
In the embodiment of the present application, when the second vacuum defoamation, should there are enough deaeration pressure and time etc., complete blind hole
111 etc. form the deaeration of segment difference part.In some embodiments, the deaeration pressure of the second vacuum defoamation is 0.4MPa-0.5MPa.?
In the pressure limit, can be completed the deaeration of planar section, and will not because pressure it is excessive caused by overflow or other problems.
In the embodiment of the present application, the time of the second vacuum defoamation can be according to pressure, model of Optical transparent adhesive etc. come
It determines.In some embodiments, the time of the second vacuum defoamation can be 20min-40min.For example, the time of the second vacuum defoamation
It can be 25min, 30min, 35min etc..Planar section (the shapes such as blind hole 111 can be completed in second vacuum defoamation 30min or so
At the outer part of segment difference section point) deaeration.
In the embodiment of the present application, after the first deaeration, need to carry out part to UV-cure optical transparent adhesive tape 130 solid
Change.By by the UV-cure optical transparent adhesive tape 130 in second area 132 (for example, other regions except first area 131)
The problems such as being solidified, the part can be made to maintain the state, overflow will not being caused due to the second deaeration.Exemplary embodiment
In, it is irradiated, UV-cure optical transparent adhesive tape 130 can be solidified with UV cure lamp.After first deaeration, carry out
It is partially cured.The UV-cure optical transparent adhesive tape 130 for not needing cured first area 131 can be blocked.
In some embodiments, referring to fig. 4 and Fig. 5, the UV-cure optical transparent adhesive tape 130 of second area 132 is carried out
Solidification includes:
First area 131 is blocked with shading piece 160；
The UV-cure optical transparent adhesive tape of the second area carries out ultraviolet curing.
In the embodiment of the present application, using shading piece 160 to the UV-cure optical transparent adhesive tape 130 of first area 131 into
Row blocks, and can solidify to avoid the UV-cure optical transparent adhesive tape 130 of first area 131.Using shading piece 160 to the firstth area
The UV-cure optical transparent adhesive tape 130 in domain 131 block can realize for greater flexibility it is partially cured.Exemplary embodiment
In, referring to Fig. 5, Fig. 8 and Fig. 9, shading piece 160, which can be, is covered in display screen surface (such as surface of cover board 120), to first
The UV-cure optical transparent adhesive tape 130 in region 131 is blocked.
Dotted portion in Fig. 4, Figure 10 and Figure 11 indicates position and the shape of first area 131.The position of first area 131
Set and shape and the location and shape of shading piece 160 it is almost the same.About the position of first area 131 and shape and shading piece
The related description and attached drawing of 160 location and shape can refer to each other.
In the embodiment of the present application, the concrete form of shading piece 160 can be versatile and flexible.In some embodiments, shading piece 160
It can be shading gummed paper, or be also possible to shading electrostatic paster.Shading gummed paper or shading electrostatic paster can be preferably covered in
The UV-cure optical transparent adhesive tape 130 of first area 131 is blocked on the surface of display screen.
In the embodiment of the present application, the shape of shading piece 160 can be determined according to the shape of first area 131 to be blocked.Example
Such as, referring to Fig. 5, Fig. 8 and Fig. 9, the shape of shading piece 160 can be more regular polygon, circle, ellipse, water-drop-shaped
Deng.It is also possible to irregular shape.
In the embodiment of the present application, the area of first area 131 is big, conducive to the effect of the second deaeration, at first area 131
UV-cure optical transparent adhesive tape 130 can have sufficient mobility to be sufficient filling with.For example, the area of first area 131 can be with
Be account for UV-cure optical transparent adhesive tape 130 area 5% or 50% etc..In some embodiments, the face of first area 131
Product accounts for the 10%-40% of the area of UV-cure optical transparent adhesive tape 130.For example, the area of first area 131 can be and account for purple
Outside line solidifies 12%, 14%, 16%, 18%, 20%, 22%, 25%, 30%, 35% of the area of Optical transparent adhesive 130 etc..
In some embodiments, first area 131 may include the part edge of UV-cure optical transparent adhesive tape 130.Ginseng
See Figure 10, first area 131 is overlapped with the part edge of UV-cure optical transparent adhesive tape 130.At this point, by first area
After the UV-cure optical transparent adhesive tape 130 in other regions except 131 is solidified, UV-cure optical transparent adhesive tape 130
The above-mentioned part edge positioned at first area 131 it is uncured.First area 131 accounts for UV-cure optical transparent adhesive tape 130
Area large percentage when, the edge of the UV-cure optical transparent adhesive tape 130 in uncured first area 131 accounts for whole
The ratio of a perimeter may also be big.
In exemplary embodiment, the edge of the UV-cure optical transparent adhesive tape 130 in first area 131 is not more than
The 25% of the entire edge of UV-cure optical transparent adhesive tape 130.It, can be by adjusting shading piece 160 for example, with reference to Fig. 8 and Fig. 9
Shape, guarantee 131 area of first area while, reduce be located at first area 131 in UV-cure optical transparent adhesive tape
130 edge accounts for the ratio at the entire edge of UV-cure optical transparent adhesive tape 130.It is located in first area 131 by reducing
The edge of UV-cure optical transparent adhesive tape 130 accounts for the ratio at the entire edge of UV-cure optical transparent adhesive tape 130, can reduce
The risk of excessive glue when the second vacuum defoamation reduces the requirement to the temperature controlled precision of the second deaeration.
In some embodiments, first area 131 is also possible to completely certain in 130 inside of UV-cure optical transparent adhesive tape
The region of range.At this point, second area 132 includes at least the 130 one week region in edge of UV-cure optical transparent adhesive tape.Referring to
There is a certain distance at the edge of Fig. 4, first area 131 far from 130 edge of UV-cure optical transparent adhesive tape.Referring to Fig. 5, shading piece
160 edge of the edge far from UV-cure optical transparent adhesive tape 130 (is parallel to UV-cure optical transparent adhesive tape in the horizontal direction
130 place planes) when thering is certain distance to be blocked, the first area 131 being blocked is completely transparent in UV-cure optical
Inside glue 130.It, can be by the regions curing of 130 edge of UV-cure optical transparent adhesive tape one week at this point, solidified.It carries out
When the second vacuum defoamation, excessive glue will not occur.
Figure in some embodiments, referring to Figure 11, in blind hole 111 orthographic projection to UV-cure optical transparent adhesive tape 130
Edge can be the side edge with first area 131.That is the side edge at the edge Yu first area 131 of blind hole 111.
In some embodiments, referring to fig. 4 and Figure 10, with reference to Fig. 8 and Fig. 9.The edge of blind hole 111 can be away from first
The edge a certain distance in region 131.For example, the edge of blind hole 111 is far from the edge of first area 131 at least 1mm.Blind hole 111
The edge a certain distance of edge far from first area 131, in the second vacuum defoamation, 111 surrounding of blind hole can be made to have can
The UV-cure optical transparent adhesive tape 130 of flowing, it is easier to be sufficient filling with.
In the embodiment of the present application, at the end of vacuum defoamation, need to carry out pressure release.In some embodiments, the second vacuum defoamation
At the end of, using sectional pressure relief.Deaeration pressure when can be by the second vacuum defoamation divides several segments (two or more) will
To normal pressure.Exemplary embodiment, sectional pressure relief can be the pressure for bearing screen assembly by deaeration pressure pressure release to normal pressure point
It is 3-5 sections.Adjacent two sections of intervals at least 3min.Such as interval 4min, 5min, 8min, 10min etc..The total duration of pressure release can be with
It is at least 20min.For example, pressure release total duration is 25min, 30min, 35min, 40min etc..
For deaeration pressure 0.5MPa when the second vacuum defoamation, can be first lasts 5min, near from 0.5MPa
0.4MPa.After being spaced 5min, then 4min is lasted from the near 0.3MPa of 0.4MPa.After being spaced 5min again, 4min is lasted from 0.3MPa
Near 0.2MPa.After being spaced 5min, 4min is lasted from the near normal pressure of 0.2MPa.Total duration 30min.
Referring to Fig. 1, Fig. 2 and Fig. 6, in some embodiments, display panel 110 may include polaroid 112, polaroid
There is through-hole, the polaroid 112 and UV-cure optical transparent adhesive tape 130 of display panel 110 are bonding, polaroid 112 on 112
On through-hole blind hole 111 is formed on display panel 110.
In some embodiments, display panel 110 can also include colored filter 113 and TFT substrate 114.TFT substrate
114, colored filter 113 and polaroid 112 are sequentially stacked connection, and the through-hole on polaroid 112 is formed on display panel 110
Blind hole 111.Polaroid 112 is connect by UV-cure optical transparent adhesive tape 130 with cover board 120.
In some embodiments, UV-cure optical transparent adhesive tape 130 can use 3M Optical transparent adhesive.For example, CEF19,
The Optical transparent adhesive of the series such as CEF28, CEF71.It, can be using with a thickness of the ultraviolet of 0.1mm-0.15mm in exemplary embodiment
Line solidifies Optical transparent adhesive 130.With thickness as small as possible, blind hole 111 is sufficient filling with.
The embodiment of the present application discloses a kind of display screen preparation method.The method of the embodiment of the present application can be used in preparation
State the display screen of embodiment.The related description of above-mentioned display screen embodiment can be used for understanding the method portion of the embodiment of the present application
Point.Following methods embodiment can also be used for understanding the display screen of above-described embodiment.Display referring to Fig. 1, in the embodiment of the present application
Screen 100 may include display panel 110 and cover board 120, and display panel 110 is transparent by UV-cure optical with cover board 120
Glue 130 connects, the one side that display panel 110 is connected with cover board 120 with blind hole 111, the display panel 110 being sequentially stacked,
UV-cure optical transparent adhesive tape 130 and cover board 120 constitute screen assembly, and UV-cure optical transparent adhesive tape 130 includes first
Region 131 and second area 132, blind hole 111 are located in range corresponding to first area 131.
Referring to Fig. 1 to Fig. 7, the display screen preparation method of the embodiment of the present application includes:
Screen assembly is subjected to the first vacuum defoamation at a temperature of the first deaeration；
The UV-cure optical transparent adhesive tape 130 in other regions except first area 131 is solidified；
Screen assembly is subjected to the second vacuum defoamation at a temperature of the second deaeration, the second deaeration temperature is greater than the first deaeration temperature
Degree；
The UV-cure optical transparent adhesive tape 130 of second area 132 is solidified.
Display screen preparation method provided by the embodiments of the present application, by the display panel 110 being sequentially stacked, ultraviolet curing light
It learns the screen assembly that transparent adhesive tape 130 and cover board 120 are constituted and carries out the first vacuum defoamation at a temperature of the first deaeration；First vacuum is de-
After bubble, the UV-cure optical transparent adhesive tape 130 of second area 132 is solidified, it is right that blind hole 111 is located at first area 131
In the range of answering；Screen assembly is subjected to the second vacuum defoamation at a temperature of the second deaeration, it is de- that the second deaeration temperature is greater than first
Temperature is steeped, the mobility of UV-cure optical transparent adhesive tape 130 is improved, can be sufficient filling with to blind hole 111；Second vacuum defoamation
Afterwards, the UV-cure optical transparent adhesive tape 130 of first area 131 is solidified.The display screen 100 of the embodiment of the present application includes
Display panel 110 and cover board 120, display panel 11 are connect by UV-cure optical transparent adhesive tape 130 with cover board 120, are shown
The one side that panel 110 is connected with cover board 120 has blind hole 111.Referring to figs. 2 and 3, true by first in the embodiment of the present application
The deaeration in the region except blind hole 111 may be implemented in empty deaeration.Fig. 2 and Fig. 3 show the knots of display screen after the first vacuum defoamation
Structure schematic diagram.Referring to figs. 2 and 3, due to 111 segment difference of blind hole, blind hole 111 cannot be completely filled, and form bubble 150.By
The UV-cure optical transparent adhesive tape 130 of second area 132 is solidified, can by the optical clear adhesive curing in the region,
Maintain existing deaeration achievement.Fig. 6 and Fig. 7 shows the structural schematic diagram of display screen after the second vacuum defoamation.Referring to Fig. 6 and Fig. 7,
By carrying out the second vacuum defoamation at a temperature of the second deaeration, the ultraviolet of uncured portion (for example, first area 131) is improved
Line solidifies the mobility of Optical transparent adhesive 130, and UV-cure optical transparent adhesive tape 130 is made to be sufficient filling with blind hole 111, improves deaeration
Effect.Due to solidifying respectively, the area of the UV-cure optical transparent adhesive tape 130 of uncured portion (for example, first area 131)
Reduce, at the same can to avoid because temperature increase due to caused by excessive glue problem.
In the embodiment of the present application, in cover board 120 and 110 bonding process of display panel, the processing of deaeration twice is at least carried out.
Wherein, temperature when the second vacuum defoamation (the second deaeration temperature) is greater than the temperature (the first deaeration temperature) of the first vacuum defoamation.
When the second deaeration temperature, the mobility of UV-cure optical transparent adhesive tape 130 is greater than the mobility of the first deaeration temperature.Second is true
When empty deaeration, since the mobility of UV-cure optical transparent adhesive tape 130 increases, blind hole 111 can be sufficient filling with.By
It is partially cured in first carrying out after the first vacuum defoamation, except 111 corresponding certain area (first area 131) of blind hole
Other regions UV-cure optical transparent adhesive tape 130 solidify.Therefore, when the second vacuum defoamation, although ultraviolet curing light
The problems such as mobility of transparent adhesive tape 130 increases, will not cause excessive glue.
In the embodiment of the present application, the first vacuum defoamation can be conventional vacuum defoamation.First vacuum defoamation can be
It is carried out under room temperature.UV-cure optical transparent adhesive tape 130 carries out conventional vacuum defoamation at normal temperature, and matrix (quilt can be realized
Cover board 120 in cohesive body, such as the application) deaeration between plane and UV-cure optical transparent adhesive tape 130, implement more
It is convenient.For example, the value range of the first deaeration temperature can be 20 DEG C -35 DEG C.For example, the first deaeration temperature can for 23 DEG C,
25,28,30 or 33 DEG C etc..It generally is not required to that specially temperature is adjusted, it is de- that the environment temperature of production can meet the first vacuum
The temperature (the first deaeration temperature) of bubble.UV-cure optical transparent adhesive tape 130 suitable for display screen within this temperature range, leads to
Crossing conventional high pressure deaeration can be completed the deaeration operation of first stage.
In the embodiment of the present application, first when the second deaeration temperature when the second vacuum defoamation is higher than the first vacuum defoamation is de-
Steep temperature.The mobility of UV-cure optical transparent adhesive tape 130 can be improved in second deaeration temperature, keeps UV-cure optical saturating
Gelatin 130 is sufficient filling with blind hole 111, guarantees deaeration effect.In exemplary embodiment, the value model of the second deaeration temperature
Enclose is 55 DEG C -70 DEG C.For example, the second deaeration temperature can be 58 DEG C, 60 DEG C, 62 DEG C, 65 DEG C, 68 DEG C etc..Second deaeration temperature
While the mobility for improving UV-cure optical transparent adhesive tape 130 is sufficient filling with blind hole 111, it is thus also avoided that due to
Temperature excessively high the problems such as causing excessive glue.
It certainly, can also be to the first deaeration temperature and the second deaeration temperature under the guidance of general principle disclosed in the present application
The value of degree is adjusted.
In the embodiment of the present application, when the first vacuum defoamation, should there are enough deaeration pressure and time etc., complete planar portions
Divide the deaeration of (the outer part that blind hole 111 etc. forms segment difference section point).In some embodiments, the deaeration pressure of the first vacuum defoamation
Value range be 0.3MPa-0.4MPa.In the pressure limit, the deaeration of planar section can be completed.
In the embodiment of the present application, the time of the first vacuum defoamation be can be according to deaeration pressure, the model of Optical transparent adhesive
Etc. determining.In some embodiments, the time of the first vacuum defoamation can be 5min-20min.For example, the first vacuum defoamation
Time can be 10min, 15min etc..Planar section (the formation such as blind hole 111 can be completed in first vacuum defoamation 10min or so
The outer part of segment difference section point) deaeration.
In the embodiment of the present application, when the second vacuum defoamation, should there are enough deaeration pressure and time etc., complete blind hole
111 etc. form the deaeration of segment difference part.In some embodiments, the deaeration pressure of the second vacuum defoamation is 0.4MPa-0.5MPa.?
In the pressure limit, can be completed the deaeration of planar section, and will not because pressure it is excessive caused by overflow or other problems.
In the embodiment of the present application, the time of the second vacuum defoamation can be according to pressure, model of Optical transparent adhesive etc. come
It determines.In some embodiments, the time of the second vacuum defoamation can be 20min-40min.For example, the time of the second vacuum defoamation
It can be 25min, 30min, 35min etc..Planar section (the shapes such as blind hole 111 can be completed in second vacuum defoamation 30min or so
At the outer part of segment difference section point) deaeration.
In the embodiment of the present application, after the first deaeration, need to carry out partially cured.By will be except first area 131
The UV-cure optical transparent adhesive tape 130 in other regions solidified, the part can be made to maintain the state, will not be because of second
Deaeration and the problems such as cause overflow.In exemplary embodiment, it is irradiated with UV cure lamp, it can be saturating to UV-cure optical
Gelatin 130 is solidified.After first deaeration, carry out partially cured.Therefore, it may be desirable to avoid do not need cured first area into
Row blocks.
In some embodiments, referring to fig. 4 and Fig. 5, the UV-cure optical transparent adhesive tape 130 of second area 132 is carried out
Solidification includes:
First area 131 is blocked with shading piece 160；
The UV-cure optical transparent adhesive tape 130 of second area 132 is subjected to ultraviolet curing.
In the embodiment of the present application, using shading piece 160 to the UV-cure optical transparent adhesive tape 130 of first area 131 into
Row blocks, and can solidify to avoid the UV-cure optical transparent adhesive tape 130 of first area 131.Using shading piece 160 to the firstth area
The UV-cure optical transparent adhesive tape 130 in domain 131 block can realize for greater flexibility it is partially cured.Exemplary embodiment
In, referring to Fig. 5, Fig. 8 and Fig. 9, shading piece 160, which can be, is covered in display screen surface (such as surface of cover board 120), to first
The UV-cure optical transparent adhesive tape 130 in region 131 is blocked.
Dotted portion in Fig. 4, Figure 10 and Figure 11 indicates position and the shape of first area 131.The position of first area 131
Set and shape and the location and shape of shading piece 160 it is almost the same.About the position of first area 131 and shape and shading piece
The related description and attached drawing of 160 location and shape can refer to each other.
In the embodiment of the present application, the concrete form of shading piece 160 can be versatile and flexible.In some embodiments, shading piece 160
It can be shading gummed paper, or be also possible to shading electrostatic paster.Shading gummed paper or shading electrostatic paster can be preferably covered in
The UV-cure optical transparent adhesive tape 130 of first area 131 is blocked on the surface of display screen.
In the embodiment of the present application, the shape of shading piece 160 can be determined according to the shape of first area 131 to be blocked.Example
Such as, referring to Fig. 5, Fig. 8 and Fig. 9, the shape of shading piece 160 can be more regular polygon, circle, ellipse, water-drop-shaped
Deng.It is also possible to irregular shape.
In the embodiment of the present application, the area of first area 131 is big, conducive to the effect of the second deaeration, at first area 131
UV-cure optical transparent adhesive tape 130 can have sufficient mobility to be sufficient filling with.For example, the area of first area 131 can be with
Be account for UV-cure optical transparent adhesive tape 130 area 5% or 50% etc..In some embodiments, the face of first area 131
Product accounts for the 10%-40% of the area of UV-cure optical transparent adhesive tape 130.For example, the area of first area 131 can be and account for purple
Outside line solidifies 12%, 14%, 16%, 18%, 20%, 22%, 25%, 30%, 35% of the area of Optical transparent adhesive 130 etc..
In some embodiments, first area 131 may include the part edge of UV-cure optical transparent adhesive tape 130.Ginseng
See Figure 10, first area 131 is overlapped with the part edge of UV-cure optical transparent adhesive tape 130.At this point, by first area
After the UV-cure optical transparent adhesive tape 130 in other regions except 131 is solidified, UV-cure optical transparent adhesive tape 130
The above-mentioned part edge positioned at first area 131 it is uncured.First area 131 accounts for UV-cure optical transparent adhesive tape 130
Area large percentage when, the edge of the UV-cure optical transparent adhesive tape 130 in uncured first area 131 accounts for whole
The ratio of a perimeter may also be big.UV-cure optical transparent adhesive tape in exemplary embodiment, in first area 131
130 edge is not more than the 25% of the entire edge of UV-cure optical transparent adhesive tape 130.For example, with reference to Fig. 8 and Fig. 9, Ke Yitong
The shape of adjustment shading piece 160 is crossed, while guaranteeing 131 area of first area, reduces the ultraviolet light being located in first area 131
The edge for solidifying Optical transparent adhesive 130 accounts for the ratio at the entire edge of UV-cure optical transparent adhesive tape 130.It is located at the by reducing
The edge of UV-cure optical transparent adhesive tape 130 in one region 131 accounts for the entire edge of UV-cure optical transparent adhesive tape 130
Ratio, the risk of excessive glue when can reduce the second vacuum defoamation reduce the requirement to the temperature controlled precision of the second deaeration.
In some embodiments, first area 131 is also possible to completely certain in 130 inside of UV-cure optical transparent adhesive tape
The region of range.At this point, second area 132 includes at least the 130 one week region in edge of UV-cure optical transparent adhesive tape.Referring to
There is a certain distance at the edge of Fig. 4, first area 131 far from 130 edge of UV-cure optical transparent adhesive tape.Referring to Fig. 5, shading piece
160 edge of the edge far from UV-cure optical transparent adhesive tape 130 (is parallel to UV-cure optical transparent adhesive tape in the horizontal direction
130 place planes) when thering is certain distance to be blocked, the first area 131 being blocked is completely transparent in UV-cure optical
Inside glue 130.It, can be by the regions curing of 130 edge of UV-cure optical transparent adhesive tape one week at this point, solidified.It carries out
When the second vacuum defoamation, excessive glue will not occur.
Figure in some embodiments, referring to Figure 11, in blind hole 111 orthographic projection to UV-cure optical transparent adhesive tape 130
Edge can be the side edge with first area 131.That is the side edge at the edge Yu first area 131 of blind hole 111.
In some embodiments, referring to fig. 4 and Figure 10, with reference to Fig. 8 and Fig. 9.The edge of blind hole 111 can be away from first
The edge a certain distance in region 131.For example, the edge of blind hole 111 is far from the edge of first area 131 at least 1mm.Blind hole 111
The edge a certain distance of edge far from first area 131, in the second vacuum defoamation, 111 surrounding of blind hole can be made to have can
The UV-cure optical transparent adhesive tape 130 of flowing, it is easier to be sufficient filling with.
In the embodiment of the present application, at the end of vacuum defoamation, need to carry out pressure release.In some embodiments, the second vacuum defoamation
At the end of, using sectional pressure relief.Deaeration pressure when can be by the second vacuum defoamation divides several segments (two or more) will
To normal pressure.Exemplary embodiment, sectional pressure relief can be the pressure for bearing screen assembly by deaeration pressure pressure release to normal pressure point
It is 3-5 sections.Adjacent two sections of intervals at least 3min.Such as interval 4min, 5min, 8min, 10min etc..The total duration of pressure release can be with
It is at least 20min.For example, pressure release total duration is 25min, 30min, 35min, 40min etc..
For deaeration pressure 0.5MPa when the second vacuum defoamation, can be first lasts 5min, near from 0.5MPa
0.4MPa.After being spaced 5min, then 4min is lasted from the near 0.3MPa of 0.4MPa.After being spaced 5min again, 4min is lasted from 0.3MPa
Near 0.2MPa.After being spaced 5min, 4min is lasted from the near normal pressure of 0.2MPa.Total duration 30min.
The embodiment of the present application also discloses a kind of electronic equipment 200.Referring to Figure 12, electronic equipment 200 includes any of the above-described
The display screen 100 of embodiment.
In the display screen 100 of the electronic equipment 200 of the embodiment of the present application, blind hole 111 is sufficient filling with, and improves deaeration effect
Fruit.The yield for substantially increasing product, reduces cost.Appearance can't see bore edges air bubble problem, and the transmitance at blind hole 111 is most
It is good.
Electronic equipment in the embodiment of the present application includes but is not limited to mobile phone, tablet computer etc..
In this application, term " first ", " second " etc. are only used for the purpose of description, are not understood to indicate or imply
Relative importance or sequence；Term " multiple " then refers to two or more, unless otherwise restricted clearly.Term " installation ",
The terms such as " connected ", " connection ", " fixation " shall be understood in a broad sense, for example, " connection " may be a fixed connection, being also possible to can
Dismantling connection, or be integrally connected；" connected " can be directly connected, can also be indirectly connected through an intermediary.For this
For the those of ordinary skill in field, the concrete meaning of above-mentioned term in this application can be understood as the case may be.
In the description of the present application, it is to be understood that the orientation or positional relationship of the instructions such as term " on ", "lower" be based on
Orientation or positional relationship shown in the drawings is merely for convenience of description the application and simplifies description, rather than indication or suggestion institute
The device or unit of finger must have specific direction, be constructed and operated in a specific orientation, it is thus impossible to be interpreted as to this Shen
Limitation please.
More than, the only specific embodiment of the application, but the protection scope of the application is not limited thereto, and it is any to be familiar with
Those skilled in the art within the technical scope of the present application, can easily think of the change or the replacement, and should all cover
Within the protection scope of the application.Therefore, the protection scope of the application should be subject to the protection scope in claims.
Claims (22)
1. a kind of display screen, the display screen includes display panel and cover board, and the display panel passes through ultraviolet with the cover board
Line solidifies optical clear glue connection, and the one side that the display panel is connected with the cover board has blind hole, and what is be sequentially stacked is aobvious
Show that panel, UV-cure optical transparent adhesive tape and cover board constitute screen assembly；Wherein
The UV-cure optical transparent adhesive tape includes first area and second area, and the blind hole is located at the first area pair
In the range of answering；
The UV-cure optical transparent adhesive tape of the second area and the UV-cure optical transparent adhesive tape point of the first area
Do not solidify.
2. display screen according to claim 1, which is characterized in that the second area is its except the first area
His region.
3. display screen according to claim 1 or 2, which is characterized in that the UV-cure optical of the second area is saturating
Gelatin and the UV-cure optical transparent adhesive tape of the first area solidify respectively includes:
After the screen assembly carries out the first vacuum defoamation at a temperature of the first deaeration, the ultraviolet curing light of the second area
Transparent adhesive tape is learned to be solidified；
After the screen assembly carries out the second vacuum defoamation at a temperature of the second deaeration, the ultraviolet curing light of the first area
Transparent adhesive tape is learned to be solidified；
Second vacuum defoamation is after the UV-cure optical transparent adhesive tape of the second area is solidified；
The second deaeration temperature is greater than the first deaeration temperature.
4. display screen according to claim 3, which is characterized in that
The value range of the first deaeration temperature is 20 DEG C -35 DEG C；The value range of the second deaeration temperature is 55 DEG C -70
℃。
5. display screen according to claim 3, which is characterized in that the deaeration pressure of first vacuum defoamation is
0.3MPa-0.4MPa；
The deaeration pressure of second vacuum defoamation is 0.4MPa-0.5MPa.
6. display screen according to claim 3, which is characterized in that the UV-cure optical transparent adhesive tape of the second area
Carrying out solidification includes:
First area is blocked with shading piece；
The UV-cure optical transparent adhesive tape of the second area carries out ultraviolet curing.
7. display screen according to claim 6, which is characterized in that the shading piece includes shading gummed paper and shading electrostatic
Patch.
8. display screen according to claim 1, which is characterized in that the area of the first area accounts for the ultraviolet curing
The 10%-40% of the area of Optical transparent adhesive.
9. display screen according to claim 1, which is characterized in that the second area includes at least the ultraviolet curing
The one week region in Optical transparent adhesive edge.
10. display screen according to claim 1, which is characterized in that side of the edge of the blind hole away from the first area
Edge at least 1mm.
11. display screen according to claim 1, which is characterized in that the display panel includes polaroid, the polaroid
Upper to have through-hole, the polaroid of the display panel and the UV-cure optical transparent adhesive tape are bonding, the polarisation
The through-hole of on piece forms the blind hole on said display panel.
12. a kind of display screen preparation method, the display screen includes display panel and cover board, the display panel and the cover board
By the transparent glue connection of UV-cure optical, the one side that the display panel is connected with the cover board has blind hole, successively
Stacked display panel, UV-cure optical transparent adhesive tape and cover board constitutes screen assembly, and the UV-cure optical is transparent
Glue includes first area and second area, and the blind hole is located in range corresponding to the first area, which comprises
The screen assembly is subjected to the first vacuum defoamation at a temperature of the first deaeration；
The UV-cure optical transparent adhesive tape of the second area is solidified；
The screen assembly is subjected to the second vacuum defoamation at a temperature of the second deaeration, the second deaeration temperature is greater than described the
One deaeration temperature；
The UV-cure optical transparent adhesive tape of the first area is solidified.
13. according to the method for claim 12, which is characterized in that the value range of the first deaeration temperature be 20 DEG C-
35℃；The value range of the second deaeration temperature is 55 DEG C -70 DEG C.
14. according to the method for claim 12, which is characterized in that the deaeration pressure of first vacuum defoamation is
0.3MPa-0.4MPa。
15. according to the method for claim 12, which is characterized in that the deaeration pressure of second vacuum defoamation is
0.4MPa-0.5MPa。
16. according to the method for claim 12, which is characterized in that by the UV-cure optical transparent adhesive tape of second area into
Row solidifies
First area is blocked with shading piece；
The UV-cure optical transparent adhesive tape of the second area is subjected to ultraviolet curing.
17. according to the method for claim 16, which is characterized in that the shading piece includes shading gummed paper and shading electrostatic
Patch.
18. according to the method for claim 12, which is characterized in that the area of the first area accounts for the ultraviolet curing
The 10%-40% of the area of Optical transparent adhesive.
19. according to the method for claim 12, which is characterized in that at the end of second vacuum defoamation, let out using segmentation
Pressure；Wherein the sectional pressure relief includes:
The pressure that the screen assembly is born is divided into 3-5 sections by deaeration pressure pressure release to normal pressure, adjacent two sections of intervals are at least
3min。
20. according to the method for claim 12, which is characterized in that the second area includes at least the ultraviolet curing
The one week region in Optical transparent adhesive edge.
21. according to the method for claim 12, which is characterized in that edge of the edge of the blind hole away from the first area
At least 1mm.
22. a kind of electronic equipment, the electronic equipment includes display screen described in any one of claims 1 to 11.
Priority Applications (1)
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| CN201910371959.9A CN110136573B (en) | 2019-05-06 | 2019-05-06 | Display screen, preparation method thereof and electronic equipment |
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|---|---|---|---|
| CN201910371959.9A CN110136573B (en) | 2019-05-06 | 2019-05-06 | Display screen, preparation method thereof and electronic equipment |
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| CN110136573A true CN110136573A (en) | 2019-08-16 |
| CN110136573B CN110136573B (en) | 2021-09-17 |
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| EP3885822A1 (en) * | 2020-03-24 | 2021-09-29 | Samsung Display Co., Ltd. | Electronic apparatus and method for manufacturing the same |
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