CN102116893B - Light guide plate manufacturing method, light guide plate, backlight module and liquid crystal display - Google Patents
Light guide plate manufacturing method, light guide plate, backlight module and liquid crystal display Download PDFInfo
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- CN102116893B CN102116893B CN201110057685A CN201110057685A CN102116893B CN 102116893 B CN102116893 B CN 102116893B CN 201110057685 A CN201110057685 A CN 201110057685A CN 201110057685 A CN201110057685 A CN 201110057685A CN 102116893 B CN102116893 B CN 102116893B
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Abstract
The invention is applicable in the field of liquid crystal display, and provides a light guide plate manufacturing method. The method comprises the following steps of: manufacturing a light guide plate substrate; spraying UV (ultraviolet) ink to the non-incident side of the light guide plate substrate; and performing UV curing to the light guide plate substrate with UV ink sprayed to form a UV ink reflective layer adhered to the non-incident side. The UV ink reflective layer not only has higher reflection rate, but also has strong adhesive force and falling prevention, can maintain the high light utilization for the light guide plate for a long time so as to ensure the excellent quality of a backlight module. The light guide plate avoids the problems that the adhesive on a reflector on the lateral side of the traditional light guide plate overflows by heat, the base material of the reflector is yellowed and falls off, as well as damage and dirt of the light guide plate and folded reflector caused by manual assembly of the reflector in the traditional printed light guide plate manufacture procedure, and the like. Therefore, the yield of the light guide plate is improved, mass time, manpower and materials are saved, and the production efficiency is improved.
Description
Technical field
The invention belongs to field of liquid crystal display, relate in particular to a kind of method for making, LGP, backlight module and LCD of LGP.
Background technology
LGP (LGP) is a kind ofly to convert line source the optical element of area source into, places in the backlight liquid crystal display module more, is used for the light that light source sends is converted into than uniform surface light source, for display panels provides backlight.The molding mode of LGP mainly is the printing moulding; Acrylic/polycarbonate (PC) sheet material that promptly utilizes optical grade is as base material, adopt have high reflectivity and not the macromolecular material of extinction (being commonly called as printing ink) stamp the leaded light site in acryl/PC sheet material bottom surface with screen printing technology.After the light that sends from light source got into LGP, when being mapped to each leaded light site, light was destroyed in the inner total reflection of sheet material, and reflected light can penetrate by LGP is positive toward all angles diffusion.Arrange through the adjustment site, can make the LGP uniformly light-emitting.
At present, in order to improve the light utilization in the LGP, prevent that light from penetrating from the LGP side, the side that does not have a light source at LGP usually sticks reflector plate, and reflector plate is made up of polymethylmethacrylate (PET) base material and adhesive glue two parts usually.But; LGP is in ageing process; Adhesive glue between reflector plate and the LGP base material be heated easily overflow, the reflector plate base material is prone to bad phenomenon such as yellowing and shedding; So not only can't play the effect that improves light utilization, have a strong impact on the quality of backlight module on the contrary, and then influence display effect.
Summary of the invention
The purpose of the embodiment of the invention is to provide a kind of method for making of LGP, is intended to solve the problem that existing LGP easy reflector plate that occurs in ageing process comes off, influences light utilization.
The embodiment of the invention is achieved in that a kind of method for making of LGP, and said method comprises the steps:
Make the LGP matrix;
To the non-light incidence side face spraying UV of said LGP matrix printing ink;
LGP matrix to spraying UV printing ink carries out UV curing, forms the UV printing ink reflection horizon that is attached to said non-light incidence side face;
The thickness of said UV printing ink is 0.18～0.2mm.
Another purpose of the embodiment of the invention is to provide a kind of LGP, and said LGP comprises the LGP matrix, and the bottom surface of said LGP matrix is provided with the leaded light site; The non-light incidence side face of said LGP matrix is attached with UV printing ink reflection horizon; The thickness of said UV printing ink is 0.18～0.2mm.
Another purpose of the embodiment of the invention is to provide a kind of backlight module, comprises LGP, and said LGP is above-mentioned LGP.
Another purpose of the embodiment of the invention is to provide a kind of LCD, comprises display panel and for said display panel backlight module backlight is provided, and said backlight module is above-mentioned backlight module.
The embodiment of the invention adopts spraying and UV curing technology to form UV printing ink reflection horizon in the side of LGP.Compare with traditional mode of pasting reflector plate in the LGP side; UV printing ink reflection horizon not only has higher reflectivity; The more important thing is its strong adhesion, difficult drop-off, can keep LGP to have higher light utilization for a long time, and then guarantee the excellent quality of backlight module.Avoided adhesive glue on the reflector plate of traditional LGP side to be heated fully overflowing, bad phenomenon such as reflector plate base material yellowing and shedding.And bad phenomenon such as the LGP of having avoided being caused because of manual work applying reflector plate in the traditional printing LGP processing procedure wounds, dirty, reflector plate fold have improved the yield of LGP.In addition, also save plenty of time and manpower and materials, improved production efficiency.
Description of drawings
Fig. 1 is the method for making process flow diagram of the LGP that provides of first embodiment of the invention;
Fig. 2 is the method for making process flow diagram of the LGP that provides of second embodiment of the invention;
Fig. 3 is the method for making process flow diagram of the LGP that provides of third embodiment of the invention.
Embodiment
In order to make the object of the invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with accompanying drawing and embodiment.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
The embodiment of the invention adopts spraying and UV curing technology to form UV printing ink reflection horizon at the non-light incidence side face of LGP matrix; To solve the caducous problem of reflector plate that paste traditional LGP side; Make LGP have higher light utilization, and guaranteed that LGP and backlight module have more lasting excellent quality.
The embodiment of the invention provides a kind of method for making of LGP, and this method comprises the steps:
Make the LGP matrix;
To the non-light incidence side face spraying UV of LGP matrix printing ink;
LGP matrix to spraying UV printing ink carries out UV curing, forms the UV printing ink reflection horizon that is attached to the non-light incidence side face.
The embodiment of the invention also provides a kind of LGP, and this LGP comprises the LGP matrix, and the bottom surface of LGP matrix is provided with the leaded light site; The non-light incidence side face of LGP matrix is attached with UV printing ink reflection horizon.
The embodiment of the invention also provides a kind of backlight module, comprises LGP, and this LGP is above-mentioned LGP.
The embodiment of the invention also provides a kind of LCD, comprises display panel and for display panel provides backlight module backlight, this backlight module is above-mentioned backlight module.
The embodiment of the invention adopts spraying and UV curing technology to form UV printing ink reflection horizon in the side of LGP.Compare with traditional mode of pasting reflector plate in the LGP side; UV printing ink reflection horizon not only has higher reflectivity; The more important thing is its strong adhesion, difficult drop-off, can keep LGP to have higher light utilization for a long time, and then guarantee the excellent quality of backlight module.Avoided adhesive glue on the reflector plate of traditional LGP side to be heated fully overflowing, bad phenomenon such as reflector plate base material yellowing and shedding.And bad phenomenon such as the LGP of having avoided being caused because of manual work applying reflector plate in the traditional printing LGP processing procedure wounds, dirty, reflector plate fold have improved the yield of LGP.In addition, also save plenty of time and manpower and materials, improved production efficiency.
Below in conjunction with specific embodiment concrete realization of the present invention is described in detail:
Embodiment one:
Fig. 1 shows the method for making process flow diagram of the LGP that first embodiment of the invention provides, and for the ease of explanation, only shows the part relevant with present embodiment.
The method for making of this LGP may further comprise the steps:
In step S101, make the LGP matrix.
In step S102, to the non-light incidence side face spraying UV of LGP matrix printing ink.
This step is that the non-light source side to LGP sprays operation, when so-called " non-light incidence side face " refers to that promptly this LGP places backlight module, light source is not set or does not have the side of light incident.
In step S103, the LGP matrix that sprays UV printing ink is carried out UV solidify, form the UV printing ink reflection horizon that is attached to the non-light incidence side face.
In the present embodiment; Step to the non-light incidence side face spraying UV of LGP printing ink can be such: polylith (specifically can be 10-20pcs) LGP matrix lamination is placed and tired neat side; Need to confirm the side of spraying; The LGP matrix through clamps, is aimed at spraying UV printing ink behind the position to be sprayed with the UV flush coater, the thickness of the amount control spraying UV printing ink through suitable control spray speed, gait of march and entering nozzle UV printing ink.The particle that is noted that UV printing ink is not too big, in order to avoid plug nozzle.After spraying work is accomplished the LGP matrix is sent into the UV curing oven and be cured, accomplish the adhesion process of UV printing ink and LGP side, obtain the formed light conductive plate.
UV printing ink in the present embodiment is after absorbing ultraviolet light under the ultraviolet irradiation, to produce living radical or kation through light trigger or photosensitizer; Trigger monomer polymerization, crosslinked and connect Zhi Huaxue reaction, it is solid-state that bonding agent was converted into by liquid state in the several seconds.Because of it contains TiO
2Particle and other reflective particles are so reflectivity is up to more than 99%.
The embodiment of the invention adopts spraying and UV curing technology to form UV printing ink reflection horizon in the side of LGP.Compare with traditional mode of pasting reflector plate in the LGP side; UV printing ink reflection horizon not only has higher reflectivity; The more important thing is its strong adhesion, difficult drop-off, can keep LGP to have higher light utilization for a long time, and then guarantee the excellent quality of backlight module.Avoided adhesive glue on the reflector plate of traditional LGP side to be heated fully overflowing, bad phenomenon such as reflector plate base material yellowing and shedding.Bad phenomenon such as the LGP of having avoided being caused because of manual work applying reflector plate in the traditional printing LGP processing procedure wounds, dirty, reflector plate fold have improved the yield of LGP.In addition, also save plenty of time and manpower and materials, improved production efficiency.
Embodiment two:
Fig. 2 shows the method for making process flow diagram of the LGP that second embodiment of the invention provides, and for the ease of explanation, only shows the part relevant with present embodiment.
LGP matrix in the foregoing description one can have the structure of traditional LGP, and its bottom surface is printed with the leaded light site, and the step that make the LGP matrix this moment specifically can comprise the steps:
In step S201, bulk LGP base material cutting is become the LGP base material unit of several required sizes.
In step S202, the light incident sides of LGP base material unit is carried out polishing.
In this step, the LGP base material element stack that can polylith be cut is placed and is tiredly carried out polishing after neat.
In step S203, LGP base material unit is carried out the net-point printing operation, obtain the LGP matrix that the bottom surface has the leaded light site.
Behind the LGP matrix that obtains several laminations placements, can directly spray subsequent operations such as UV printing ink.That is:
In step S204, to the non-light incidence side face spraying UV of LGP matrix printing ink.
In step S205, the LGP matrix that sprays UV printing ink is carried out UV solidify, form the UV printing ink reflection horizon that is attached to the non-light incidence side face.
Embodiment three:
Fig. 3 shows the method for making process flow diagram of the LGP that third embodiment of the invention provides, and for the ease of explanation, only shows the part relevant with present embodiment.
LGP matrix in the foregoing description one also can be the LGP sheet material that the leaded light site is not also printed in the bottom surface, and the step that make the LGP matrix this moment specifically can comprise the steps:
In step S301, bulk LGP base material cutting is become the LGP base material unit of several required sizes.
In step S302, the light incident sides of LGP base material unit is carried out polishing, obtain the LGP matrix.
In this step, the LGP base material element stack that can polylith be cut is placed and is tiredly carried out polishing after neat.
Behind the LGP matrix that obtains several laminations placements, can directly spray subsequent operations such as UV printing ink.That is:
In step S303, to the non-light incidence side face spraying UV of LGP matrix printing ink.
In step S304, the LGP matrix that sprays UV printing ink is carried out UV solidify, form the UV printing ink reflection horizon that is attached to the non-light incidence side face.
After forming UV printing ink reflection horizon, can further carry out the operation of leaded light net-point printing, that is:
In step S305, the LGP matrix after the UV curing is carried out the net-point printing operation, form the leaded light site in the bottom surface of LGP matrix.
Embodiment four:
In embodiments of the present invention, in the step of the non-light incidence side face spraying UV of LGP matrix printing ink, the thickness of the UV printing ink of spraying specifically can be 0.1～0.2mm; In this thickness range; Can obtain higher reflectivity, the UV ink lay was less to the contribution of LGP emitting brightness when thickness was excessive, and waste coating; Increase process time again, be unfavorable for practicing thrift cost.And the thickness of the leaded light site of bottom surface of light guide plate generally between 0.08～0.2mm, is limited in coating thickness the stability that also can guarantee to print leaded light site and spraying UV printing ink processing procedure in the scope of 0.1～0.2mm, avoids processing procedure complicated.
As a kind of preferred implementation of present embodiment, the coating thickness of UV printing ink is preferably about 0.19mm, can be 0.18～0.2mm, and this moment, the reflectivity of UV ink lay was higher, and the emitting brightness of LGP is higher.Table 1 shows the mean flow rate measurement data of four kinds of 24 cun LGPs; Wherein the side of three kinds of LGPs is provided with UV printing ink reflection horizon; The thickness in UV printing ink reflection horizon is respectively 0.10mm, 0.15mm, 0.19mm; Another kind is the LGP that traditional side attaches the white reflecting sheet, and the thickness of reflector plate is 0.225mm.
The mean flow rate measurement data of four kinds of 24 cun LGPs of table 1.
Measurement data according to table 1 shows that when the thickness of UV printing ink was 0.19mm, the mean flow rate of LGP reached 288.9 nits, was higher than other three kinds of LGPs.Compare with the LGP of traditional stickup reflector plate, not only reflectivity is higher, and thickness is also thinner.Above-mentioned mean flow rate is to select the average brightness of 400 (20*20) point; The thickness of UV printing ink also is meant average thickness.
Embodiment five:
In embodiments of the present invention; LGP matrix to spraying UV printing ink carries out in the step of UV curing operation; Specifically can be 8～15s set time, and this time is that the thickness that combines UV printing ink in the actual mechanical process, the character of LGP base material and the power and the factors such as gait of march of LGP in the UV curing oven of UV fluorescent tube are confirmed.In practical operation; For thickness is the UV printing ink of 0.1～0.2mm; Be chosen as 8～15s set time; So both can guarantee in the UV solidification process that the LGP base material can not made it close attachment in the LGP side by excessively irradiation and yellow can make UV printing ink well solidified again of ultraviolet light.In addition, this time range is suitable for the set time that thickness is the leaded light site of 0.08～0.2mm, therefore, this set time choose the stability that also can guarantee to solidify leaded light site and UV curing printing ink processing procedure, avoid the complicated of curing process.
Embodiment six:
Present embodiment provides a kind of LGP, and this LGP can adopt the described method of above-mentioned arbitrary embodiment to process.This LGP comprises the LGP matrix, and the bottom surface of this LGP matrix is provided with the leaded light site, and the non-light source side of this LGP matrix is provided with UV printing ink reflection horizon.Non-light source side wherein is LGP does not have light incident in backlight module side.
In embodiments of the present invention, the thickness in UV printing ink reflection horizon can be 0.1～0.2mm.Wherein, the thickness in UV printing ink reflection horizon refers to average thickness.
In embodiments of the present invention, the thickness of UV ink lay is preferably about 0.19mm, specifically can be 0.18～0.2mm, and wherein reflectivity is the highest during 0.19mm.Concrete measurement data can be with reference to above-mentioned table 1.
The embodiment of the invention is provided with UV printing ink reflection horizon in the side of LGP, this UV printing ink reflection horizon forms through spraying and UV curing technology.Compare with traditional structure of pasting reflector plate in the LGP side; UV printing ink reflection horizon not only has higher reflectivity; The more important thing is its strong adhesion, difficult drop-off, can keep LGP to have higher light utilization for a long time, and then guarantee the excellent quality of backlight module.Avoided adhesive glue on traditional LGP offside reflection sheet to be heated fully overflowing, bad phenomenon such as reflector plate base material yellowing and shedding.And make bad phenomenon such as the LGP that this LGP also avoided being caused because of manual work applying reflector plate in the traditional printing LGP processing procedure is wounded, dirty, reflector plate fold, improved the yield of LGP.In addition, also save plenty of time and manpower and materials, improved production efficiency.
A kind of improvement as the embodiment of the invention; The thickness of UV ink lay is set to 0.1～0.2mm; And be preferably 0.19mm; The mean flow rate of LGP is greatly improved, has also guaranteed to make the stability of the UV printing ink reflection horizon and the processing procedure of printing leaded light site, avoided the complicated of manufacturing process.
The above is merely preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of within spirit of the present invention and principle, being done, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. the method for making of a LGP is characterized in that, said method comprises the steps:
Make the LGP matrix;
To the non-light incidence side face spraying UV of said LGP matrix printing ink;
LGP matrix to spraying UV printing ink carries out UV curing, forms the UV printing ink reflection horizon that is attached to said non-light incidence side face;
The thickness of said UV printing ink is 0.18～0.2mm.
2. the method for claim 1 is characterized in that, the step of said making LGP matrix is specially:
Bulk LGP base material cutting is become several LGP base material unit;
Light incident sides to said LGP base material unit is carried out polishing;
Said LGP base material unit is carried out the net-point printing operation, obtain the LGP matrix that the bottom surface has the leaded light site.
3. the method for claim 1 is characterized in that, the step of said making LGP matrix is specially:
Bulk LGP base material cutting is become several LGP base material unit;
Light incident sides to said LGP base material unit is carried out polishing, obtains the LGP matrix.
4. method as claimed in claim 3 is characterized in that, said method is carried out UV at the LGP matrix to spraying UV printing ink and solidified, and the step that forms the UV printing ink reflection horizon that is attached to said non-light incidence side face also comprises the steps: afterwards
LGP matrix after the UV curing is carried out the net-point printing operation, form the leaded light site in the bottom surface of LGP matrix.
5. the method for claim 1 is characterized in that, be 8～15s the set time of the LGP matrix that has sprayed UV printing ink being carried out UV curing.
6. a LGP is characterized in that, said LGP comprises the LGP matrix, and the bottom surface of said LGP matrix is provided with the leaded light site; The non-light incidence side face of said LGP matrix is attached with UV printing ink reflection horizon; The thickness of said UV printing ink is 0.18～0.2mm.
7. a backlight module comprises LGP, it is characterized in that, said LGP is the described LGP of claim 6.
8. a LCD comprises display panel and for said display panel backlight module backlight is provided, and it is characterized in that, said backlight module is the described backlight module of claim 7.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110057685A CN102116893B (en) | 2011-03-10 | 2011-03-10 | Light guide plate manufacturing method, light guide plate, backlight module and liquid crystal display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201110057685A CN102116893B (en) | 2011-03-10 | 2011-03-10 | Light guide plate manufacturing method, light guide plate, backlight module and liquid crystal display |
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| CN102116893A CN102116893A (en) | 2011-07-06 |
| CN102116893B true CN102116893B (en) | 2012-10-03 |
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Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102673201A (en) * | 2012-05-31 | 2012-09-19 | 苏州市昶锦光电有限公司 | Printing technology for light guide plate |
| CN102861696B (en) * | 2012-09-14 | 2015-03-25 | 苏州市商祺光电有限公司 | Spraying device and spraying process for side reflection shading films of light guide plates |
| CN104226541A (en) * | 2013-06-18 | 2014-12-24 | 泓创科技有限公司 | Ink-spraying coating method of light guide plate |
| CN103869408A (en) * | 2014-03-24 | 2014-06-18 | 曾洲 | Method for manufacturing light guide plate |
| CN105022186A (en) * | 2014-04-23 | 2015-11-04 | 群创光电股份有限公司 | Display device and processing machine bench for same |
| CN105044817B (en) * | 2015-08-19 | 2018-06-19 | 广州创维平面显示科技有限公司 | A kind of light guide plate, liquid crystal module and LCD TV |
| CN105044816A (en) * | 2015-08-19 | 2015-11-11 | 广州创维平面显示科技有限公司 | Novel light guide plate and manufacturing method thereof |
| CN105807362B (en) * | 2016-06-01 | 2018-12-11 | 京东方科技集团股份有限公司 | Light guide plate and preparation method thereof, backlight module and display device |
| CN106054459A (en) * | 2016-08-18 | 2016-10-26 | 深圳创维－Rgb电子有限公司 | Ultrathin backlight module preparing method, ultrathin backlight module preparing device and television |
| CN107728252B (en) * | 2017-12-11 | 2020-09-01 | 南通惟怡新材料科技有限公司 | Light guide plate for preventing light leakage |
| CN108335632A (en) * | 2018-04-16 | 2018-07-27 | 李辉清 | A kind of display panel and its manufacture craft with UV coatings |
| CN109143427B (en) * | 2018-09-03 | 2021-01-12 | 广州景颐光电科技有限公司 | Diffuse reflection plate and manufacturing method thereof |
| CN109239837B (en) * | 2018-11-09 | 2020-11-03 | 深圳Tcl新技术有限公司 | Light guide plate side reflector plate attaching process and light guide plate |
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| CN101806978A (en) * | 2010-04-02 | 2010-08-18 | 四川长虹电器股份有限公司 | Novel liquid crystal module light guide plate and backlight source thereof |
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| CN100412642C (en) * | 2003-07-11 | 2008-08-20 | 友达光电股份有限公司 | Backlight assembly |
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Effective date of registration: 20210713 Address after: Room 821, No. 333, jiufo Jianshe Road, Zhongxin Guangzhou Knowledge City, Huangpu District, Guangzhou, Guangdong 510700 Patentee after: Skyworth Group Intelligent Technology Co., Ltd Address before: 510530 No.99, Kaida Road, Science City, Guangzhou Development Zone, Guangdong Province Patentee before: GUANGZHOU SKYWORTH FLAT DISPLAY TECHNOLOGY Co.,Ltd. |