CN109823005A - A kind of full applying method of solid state optics glue - Google Patents

A kind of full applying method of solid state optics glue Download PDF

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Publication number
CN109823005A
CN109823005A CN201910086447.8A CN201910086447A CN109823005A CN 109823005 A CN109823005 A CN 109823005A CN 201910086447 A CN201910086447 A CN 201910086447A CN 109823005 A CN109823005 A CN 109823005A
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Prior art keywords
solid state
finished product
edge
optics glue
state optics
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CN201910086447.8A
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CN109823005B (en
Inventor
余立富
吴德生
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Truly Opto-Electronics Ltd
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Truly Opto-Electronics Ltd
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Abstract

The invention discloses a kind of full applying methods of solid state optics glue comprising following steps: providing a substrate and cover board;Solid state optics glue is bonded in substrate or lid surface;By substrate and cover board contraposition fitting obtain semi-finished product, and to after fitting substrate and cover board carry out edge precuring;Pressurization deaeration processing and main solidification are carried out, finished product is obtained.The present invention before deaeration by carrying out edge precuring, so that the edge of solid state optics glue becomes firm, it is not easily accessed gas in the deaeration process, to reduce the edge that air enters solid state optics glue, solve the problems, such as that existing solid state optics glue still remains the high fraction defective of edge bubble after deaeration, it overcomes the pressure increased in the prior art Wei bubble is thoroughly removed in bubble furnace and leads to be especially marginal portion in solid state optics glue and the problem of biggish bubble rebound occur and reduce the pressure in bubble furnace to avoid the occurrence of the rebound of edge bubble but leading to Qi Pao baked the problem of not falling among solid state optics glue.

Description

A kind of full applying method of solid state optics glue
Technical field
The present invention relates to full coating technique fields, more specifically to a kind of full applying method of solid state optics glue.
Background technique
In existing life, full coating technique has been widely applied and has lived at present, in the fields such as industry, with the height of science and technology Speed development, market competition is further fierce, gradually proposes more to require to full coating technique.In laminated material part, industry at present The glue material that boundary uses can be divided into three big mainstreams, be for second the OCR optical cement of liquid, third one is solid OCA optical cement Kind is then solid SCA optical film.
Glue material commonly used in the trade at present is OCR optical cement, but is difficult at frame and at FPC when OCR optics adhesive curing solid Change thoroughly, need to solidify again, excessive glue is difficult to control, and the glue for spilling over edge is difficult to clear up again.Especially for large-sized fitting Excessive glue is difficult to control, high production cost, and production efficiency is low.Product needs transport different stations three times or four times, production Cost of labor is also higher, and in dispensing levelling, bubble is also easy to produce during cover substrate or cover board, and moves and have on conveyer belt It may cause displacement, the fitting area the big more is also easy to produce.In order to solve the problems, such as excessive glue and displacement, also start in the industry using OCA Optical cement replaces OCR optical cement, but OCA optical cement has the shortcomings that being easy to produce bubble when being bonded, existing using pressurization The baked bubble processing of the mode Jin Hang of deaeration solves the problems, such as this, in actually fitting, although carrying out the baked bubble processing of pressurization deaeration Deng Method, OCA optical cement still remain bubble rebound, are concentrated mainly on OCA optical cement edge, existing technology is difficult to be fully solved This problem.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of full applying method of solid state optics glue, the present invention by Edge precuring is carried out before deaeration, solid state optics glue hardness when being solidified by UV can improve, i.e., will form chemistry between OCA molecule Key crosslinking so that the edge of solid state optics glue becomes firm, be not easily accessed gas in the deaeration process, thus reduce air into Enter the edge of solid state optics glue, that is, solves existing solid state optics glue and still remain asking for the high fraction defective of edge bubble after deaeration Topic, overcoming the pressure increased in the prior art Wei bubble is thoroughly removed in bubble furnace causes in solid state optics glue especially There is the problem of biggish bubble rebound and to avoid the occurrence of the pressure in edge bubble rebound reduction bubble furnace in marginal portion But lead to Qi Pao baked the problem of not falling among solid state optics glue.
The technical problems to be solved by the invention are achieved by the following technical programs:
A kind of full applying method of solid state optics glue comprising following steps:
One substrate and cover board are provided;
Solid state optics glue is bonded in the substrate or lid surface;
By the substrate and cover board contraposition fitting obtain semi-finished product, and to after fitting substrate and cover board carry out edge precuring;
Pressurization deaeration processing is carried out to the semi-finished product after edge precuring;
To pressurization deaeration treated semi-finished product carry out main solidification, finished product is obtained.
Further, in the full applying method of solid state optics glue provided by the invention, the curing degree of the edge precuring Account for the 70 ~ 85% of the cured curing degree of the master.
Further, substrate and lid in the full applying method of solid state optics glue provided by the invention, after described pair of fitting Plate carries out edge precuring and specifically includes:
By after fitting substrate and cover board be placed under the face UV precuring device;
Barn door is set between the semi-finished product and the face the UV precuring device;
Wherein, the barn door is oppositely arranged with the semi-finished product, and is provided with transmissive slit on the barn door, described The edge of optical slits and the semi-finished product is oppositely arranged;
After the face the UV precuring device issues UV light, the UV light is radiated at the semi-finished product by the transmissive slit Marginal position carries out edge precuring to semi-finished product.
Further, in the full applying method of solid state optics glue provided by the invention, the light source of the edge precuring is adopted With the point light source of 2 ~ 5mm.
Further, in the full applying method of solid state optics glue provided by the invention, after the precuring to edge half Finished product carries out pressurization deaeration processing and specifically includes: the semi-finished product being placed in pressure de-bubbling equipment, to the pressurization deaeration Inflatable body is in equipment to pressurize to the semi-finished product, in the pressure process, the pressure of the pressure de-bubbling equipment 0.2~ Between 0.6MPa, the time of the pressurization is between 5~30min.
Further, in the full applying method of solid state optics glue provided by the invention, the cured UV light accumulated amount of master is big In 2000mJ/cm2
Further, in the full applying method of solid state optics glue provided by the invention, the substrate is the glass of display module Glass substrate.
Further, in the full applying method of solid state optics glue provided by the invention, the cover board is to touch cover board or guarantor Protecting cover plate.
The invention has the following beneficial effects:
The full applying method of solid state optics glue of the present invention, by carrying out edge precuring before deaeration, solid state optics glue is consolidated by UV Hardness can improve when change, i.e., will form chemical bond crosslinking between OCA molecule, so that the edge of solid state optics glue becomes firm, It is not easily accessed gas in de-aeration, to reduce the edge that air enters solid state optics glue, that is, solves existing solid state optics Glue still remains the problem of edge bubble high fraction defective after deaeration, overcomes and adds in the prior art Wei bubble is thoroughly removed Pressure in air pocket furnace but cause in solid state optics glue be especially marginal portion occur biggish bubble rebound the problem of and For avoid the occurrence of edge bubble rebound reduce bubble furnace in pressure but cause the Qi Pao among solid state optics glue it is baked do not fall ask Topic, the present invention take into account evenly solve this problem in that well.
Specific embodiment
In order to enable those skilled in the art to better understand the solution of the present invention, below to the technology in the embodiment of the present invention Scheme is clearly and completely described, it is clear that and the described embodiment is only a part of the embodiment of the present invention, rather than Whole embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creative work premise Under every other embodiment obtained, should fall within the scope of the present invention.
In practical solid state optics glue laminating, although carrying out the pressurization baked bubble processing method of deaeration Deng, OCA optical cement is still deposited It rebounds in bubble, is concentrated mainly on OCA optical cement edge, existing technology is difficult to be fully solved this problem.Moreover, existing skill Increase in art Wei bubble is thoroughly removed the pressure in bubble furnace cause to be especially in solid state optics glue marginal portion occur compared with The problem of big bubble rebound and the pressure in bubble furnace is reduced to avoid the occurrence of the rebound of edge bubble but lead to solid state optics Qi Pao baked the problem of not falling among glue, it is difficult to take into account.
To solve the above-mentioned problems, the present invention provides a kind of suitable for firmly to the hard full applying method of solid state optics glue. The full applying method of solid state optics glue the following steps are included:
Step 1 provides a substrate and cover board.
It should be noted that in the present embodiment, the substrate can be the rigid substrates of display module, and the cover board can To be that rigid protective cover board is also possible to rigid touch cover board.It is above preferably, do not indicate still can only be in the type Substrate and cover board on realize this method.
Step 2 is bonded solid state optics glue in the substrate or lid surface.
Step 3, by the substrate and cover board contraposition fitting obtain semi-finished product, and to after fitting substrate and cover board carry out side Edge precuring, so that the edge cure of solid state optics glue becomes firm air and is not easily accessible.
Wherein, edge precuring generally refers to count the precuring within 10mm from edge.
Preferably, the substrate after described pair of fitting and cover board progress edge precuring specifically include:
Step 31, by after fitting substrate and cover board be placed under the face UV precuring device;
Barn door is arranged between the semi-finished product and the face the UV precuring device in step 32;
Wherein, the barn door is oppositely arranged with the semi-finished product, and is provided with transmissive slit on the barn door, described The edge of optical slits and the semi-finished product is oppositely arranged;
Step 33, after the face the UV precuring device issues UV light, described in the UV light is radiated at by the transmissive slit The marginal position of semi-finished product carries out edge precuring to semi-finished product.
Wherein, the curing degree of the edge precuring accounts for the 70 ~ 85% of the cured curing degree of the master, but not limited to this. Under actual conditions, the determination according to the product of used solid state optics glue original curing degree, for example, OCA optical cement goes out The curing degree of factory is 45% or so, and requires curing degree to reach 70% or so and be fully cured, and the curing degree of that precuring can be 50% ~ 60%, wait after deaerations again it is main be cured to about 70% curing degree.
In another embodiment, the light source of the edge precuring can use the point light source of 2 ~ 5mm, without face light Source and barn door.
It should be noted that obtaining semi-finished product preferably but not limiting and paste using vacuum the substrate and cover board contraposition fitting Conjunction method, wherein vacuum degree: 100 ~ 1000pa, pressure: 0.1 ~ 0.5Mpa, pressing time: 1 ~ 5 second.
Step 4 carries out pressurization deaeration processing to the semi-finished product after edge precuring.
Semi-finished product after the precuring to edge carry out pressurization deaeration processing and specifically include: the semi-finished product are placed on In pressure de-bubbling equipment, inflatable body is in Xiang Suoshu pressure de-bubbling equipment to pressurize to the semi-finished product, in the pressure process, institute The pressure of pressure de-bubbling equipment is stated between 0.2~0.6MPa, the time of the pressurization, temperature was set between 5~30min Between 35 ~ 60 DEG C.
Step 5, to pressurization deaeration treated semi-finished product carry out main solidification, obtain finished product.
The cured UV light accumulated amount of master is greater than 2000mJ/cm2, but not limited to this.
By above-mentioned method, the full applying method of solid state optics glue of the present invention, by carrying out edge precuring before deaeration, Solid state optics glue hardness when being solidified by UV can improve, i.e., will form chemical bond crosslinking between OCA molecule, so that solid state optics glue Edge become firm, gas is not easily accessed in the deaeration process, to reduce the edge that air enters solid state optics glue, i.e., It solves the problems, such as that existing solid state optics glue still remains the high fraction defective of edge bubble after deaeration, overcomes and be in the prior art It thoroughly removes bubble and increases the pressure in bubble furnace and cause to be especially marginal portion in solid state optics glue and biggish gas occur It steeps the problem of rebounding and but causes among solid state optics glue to avoid the occurrence of the pressure in edge bubble rebound reduction bubble furnace Qi Pao baked the problem of not falling, the present invention takes into account evenly solve this problem in that well.
In order to make those skilled in the art more fully understand application scheme, technical solutions in the embodiments of the present application It is clearly and completely described.The solid state optics adhesive curing rate illustrated below reaches 70% or more, then is fully cured, but can be with What is understood is, it is not limited to which this, is only convenient for illustrate can not be as being limitation of the present invention herein.
Embodiment 1
A kind of full applying method of solid state optics glue, comprising the following steps:
Step 1 provides a LCD mould group and glass cover-plate;
Step 2 is bonded solid state optics glue in the glass cover plate surfaces;
The LCD mould group and glass cover-plate contraposition fitting are obtained semi-finished product by step 3, and the solid state optics glue is located at the LCD Between the glass and glass cover-plate of mould group;And edge precuring is carried out to semi-finished product, so that the edge cure of solid state optics glue becomes Air must be consolidated to be not easily accessible.
Wherein, the LCD mould group and glass cover-plate contraposition fitting are obtained semi-finished product and use vacuum abutted method, wherein Vacuum degree: 500pa, pressure: 0.3Mpa, pressing time: 3 seconds.
The light source of the edge precuring uses the point light source of 2 ~ 5mm in the edge illumination of the semi-finished product to solid-state light The edge for learning glue carries out photocuring, and curing degree is controlled 50 ~ 60%.
Step 4 carries out pressurization deaeration processing to the semi-finished product after edge precuring.
Semi-finished product after the precuring to edge carry out pressurization deaeration processing and specifically include: the semi-finished product are placed on In pressure de-bubbling equipment, inflatable body is in Xiang Suoshu pressure de-bubbling equipment to pressurize to the semi-finished product, in the pressure process, institute The pressure for stating pressure de-bubbling equipment is set as 0.4MPa, and the pressing time sets 15min, and temperature sets 45 DEG C.
Step 5, to pressurization deaeration treated semi-finished product carry out main solidification, obtain finished product.
The cured UV light accumulated amount of master is greater than 2000mJ/cm2, curing degree control is 70% or so.
Embodiment 2
This embodiment differs from embodiment 1 in that: described in step 3 to after fitting substrate and cover board carry out edge it is pre- solid Change specifically includes:
Semi-finished product are placed under the face UV precuring device by step 31;
Barn door is arranged between the semi-finished product and the face the UV precuring device in step 32;
Wherein, the barn door is oppositely arranged with the semi-finished product, and is provided with transmissive slit on the barn door, described The edge of optical slits and the semi-finished product is oppositely arranged;
Step 33, after the face the UV precuring device issues UV light, described in the UV light is radiated at by the transmissive slit The marginal position of semi-finished product carries out edge precuring to semi-finished product.
Wherein, transmissive slit width is set as 5mm, and the curing degree of precuring is controlled 50 ~ 60%.
Embodiment 3
This embodiment differs from embodiment 1 in that: the glass cover-plate replaces with touch cover board.
Comparative example 1
A kind of full applying method of solid state optics glue, comprising the following steps:
Step 1 provides a LCD mould group and glass cover-plate;
Step 2 is bonded solid state optics glue in the glass cover plate surfaces;
The LCD mould group and glass cover-plate contraposition fitting are obtained semi-finished product by step 3, and the solid state optics glue is located at the LCD Between the glass and glass cover-plate of mould group.
Wherein, the LCD mould group and glass cover-plate contraposition fitting are obtained semi-finished product and use vacuum abutted method, wherein Vacuum degree: 500pa, pressure: 0.3Mpa, pressing time: 3 seconds.
Step 4 carries out pressurization deaeration processing to the semi-finished product of step 3.
Semi-finished product after the precuring to edge carry out pressurization deaeration processing and specifically include: the semi-finished product are placed on In pressure de-bubbling equipment, inflatable body is in Xiang Suoshu pressure de-bubbling equipment to pressurize to the semi-finished product, in the pressure process, institute The pressure for stating pressure de-bubbling equipment is set as 0.4MPa, and the pressing time sets 15min, and temperature sets 45 DEG C.
Step 5, to pressurization deaeration, treated that semi-finished product solidify, and obtains finished product.
The cured UV light accumulated amount is greater than 2000mJ/cm2, curing degree control is 70% or so.
It is tested using the number of bubbles for visually observing the corresponding adhesive product of various examples and comparative examples, test knot Fruit is as follows: the fraction defective of the finished product edge bubble of embodiment 1 to 3 is respectively 0.82%, 0.85% and 0.90%, control 1% with Under;And the fraction defective of the edge bubble of comparative example is up to 8%.
By carrying out edge precuring before deaeration, solid state optics glue hardness when being solidified by UV can be improved, i.e. OCA molecule Between will form chemical bond crosslinking so that the edge of solid state optics glue becomes firm, be not easily accessed in deaeration pressure process Gas solves existing solid state optics glue and still remains after deaeration to reduce the edge that air enters solid state optics glue It the problem of edge bubble high fraction defective, overcomes the pressure increased in the prior art Wei bubble is thoroughly removed in bubble furnace and leads Cause in solid state optics glue that especially marginal portion the problem of biggish bubble rebound occurs and for avoid the occurrence of edge bubble anti- The pressure that bullet reduces in bubble furnace but leads to Qi Pao baked the problem of not falling among solid state optics glue, and the present invention takes into account flat well Solve this problem in that weighing apparatus.
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 (8)

1. a kind of full applying method of solid state optics glue, which is characterized in that itself the following steps are included:
One substrate and cover board are provided;
Solid state optics glue is bonded in the substrate or lid surface;
By the substrate and cover board contraposition fitting obtain semi-finished product, and to after fitting substrate and cover board carry out edge precuring;
Pressurization deaeration processing is carried out to the semi-finished product after edge precuring;
To pressurization deaeration treated semi-finished product carry out main solidification, finished product is obtained.
2. the full applying method of solid state optics glue according to claim 1, which is characterized in that the solidification of the edge precuring Rate accounts for the 70 ~ 85% of the cured curing degree of the master.
3. the full applying method of solid state optics glue according to claim 1, which is characterized in that described pair fitting after substrate and Cover board carries out edge precuring and specifically includes:
By after fitting substrate and cover board be placed under the face UV precuring device;
Barn door is set between the semi-finished product and the face the UV precuring device;
Wherein, the barn door is oppositely arranged with the semi-finished product, and is provided with transmissive slit on the barn door, described The edge of optical slits and the semi-finished product is oppositely arranged;
After the face the UV precuring device issues UV light, the UV light is radiated at the semi-finished product by the transmissive slit Marginal position carries out edge precuring to semi-finished product.
4. the full applying method of solid state optics glue according to claim 1, which is characterized in that the light source of the edge precuring Using the point light source of 2 ~ 5mm.
5. the full applying method of solid state optics glue according to claim 1, which is characterized in that after the precuring to edge Semi-finished product carry out pressurization deaeration processing and specifically include: the semi-finished product are placed in pressure de-bubbling equipment, it is de- to the pressurization Steep in equipment that inflatable body is to pressurize to the semi-finished product, in the pressure process, the pressure of the pressure de-bubbling equipment 0.2~ Between 0.6MPa, the time of the pressurization is between 5~30min.
6. the full applying method of solid state optics glue according to claim 1, which is characterized in that the cured UV light accumulated amount of master Greater than 2000mJ/cm2
7. the full applying method of solid state optics glue according to claim 1, which is characterized in that the substrate is display module Glass substrate.
8. the full applying method of solid state optics glue according to claim 1, which is characterized in that the cover board be touch cover board or Cover sheet.
CN201910086447.8A 2019-01-29 2019-01-29 Solid optical adhesive full-lamination method Active CN109823005B (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113103712A (en) * 2021-05-14 2021-07-13 业成科技(成都)有限公司 Bonding method and bonding apparatus

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CN103144410A (en) * 2013-03-27 2013-06-12 城步新鼎盛电子科技有限公司 Defoaming method of capacitance touching fitting process
CN104309267A (en) * 2014-09-17 2015-01-28 合肥鑫晟光电科技有限公司 Substrate applying method, touch control display substrate and display apparatus
CN105629536A (en) * 2016-03-31 2016-06-01 中航华东光电有限公司 Hard-to-hard liquid crystal screen binding method
CN108841332A (en) * 2018-08-31 2018-11-20 信利光电股份有限公司 It is a kind of to be bonded OCA glue, display touch module and terminal device entirely

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008115513A1 (en) * 2007-03-19 2008-09-25 White Electronic Designs Corp. Enhanced liquid crystal display system and methods
CN103144410A (en) * 2013-03-27 2013-06-12 城步新鼎盛电子科技有限公司 Defoaming method of capacitance touching fitting process
CN104309267A (en) * 2014-09-17 2015-01-28 合肥鑫晟光电科技有限公司 Substrate applying method, touch control display substrate and display apparatus
CN105629536A (en) * 2016-03-31 2016-06-01 中航华东光电有限公司 Hard-to-hard liquid crystal screen binding method
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113103712A (en) * 2021-05-14 2021-07-13 业成科技(成都)有限公司 Bonding method and bonding apparatus

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