CN103869408A - Method for manufacturing light guide plate - Google Patents
Method for manufacturing light guide plate Download PDFInfo
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- CN103869408A CN103869408A CN201410112416.2A CN201410112416A CN103869408A CN 103869408 A CN103869408 A CN 103869408A CN 201410112416 A CN201410112416 A CN 201410112416A CN 103869408 A CN103869408 A CN 103869408A
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- light guide
- light
- guide plate
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Abstract
The invention discloses a method for manufacturing a light guide plate. The method for manufacturing the light guide plate includes the following steps that firstly, a light guide plate body is provided and the light guide plate body comprises two opposite end faces; secondly, coating is carried out and light guide printing ink drops are sprayed on one end face of the light guide plate body and the other end face of the light guide plate is a light emitting face; thirdly, baking is carried out on the light guide plate body on which the light guide printing ink drops are sprayed, so that all the light guide printing ink drops are dried and solidified on the light guide plate body. According to the method for manufacturing the light guide plate, the steps of spraying and baking are adopted, the light guide plate is easy to manufacture, manufacturing efficiency can be improved and manufacturing cost can be effectively reduced. In addition, as the spraying manner is adopted, the machining difficulty will not be increased as the light guide plate is thinner and thinner. Meanwhile, distribution of the printing ink drop amount on an end face is reasonably set, so that light emitted from the whole light guide plate is more even and the light utilization rate can be improved.
Description
Technical field
The present invention relates to light guide plate field, be specifically related to a kind of method for making of light guide plate.
Background technology
Light guide plate, as the requisite optical element in advertising lamp box or various light fixture, is mainly used in line source to be converted into area source.And on the end face of described light guide plate (this end face is relative with exiting surface), often need to be provided with site, in light is injected light guide plate and while being mapped to site, this site is used for making light to reflect, reflect toward all directions, and penetrates from the exiting surface of light guide plate.At present, the mode of mainly getting ready by cutter or laser engraving machine in industry is made site.But along with light fixture etc. is to thinness future development, more and more higher to the requirement of light guide plate.And along with light guide plate reduces, the processing request of site increases, cause processing comparatively complicated, difficulty of processing is larger.
Summary of the invention
In order to overcome the deficiencies in the prior art, the object of the present invention is to provide a kind of method for making of light guide plate, it makes simple, convenient.
For addressing the above problem, the technical solution adopted in the present invention is as follows:
The method for making of light guide plate, comprises the following steps,
Steps A: light conducting plate body is provided, and described light conducting plate body comprises relative both ends of the surface;
Step B: spraying, to a wherein end face spraying light guide ink drop of described light conducting plate body, the other end of this light conducting plate body is exiting surface;
Step C: baking, the light conducting plate body that is coated with light guide ink drop is toasted, make each light guide ink drop baking and curing in light conducting plate body.
Described light conducting plate body comprises two relative light incident sides, and this two light incident sides is all connected between both ends of the surface; The described end face that is coated with light guide ink comprises respectively the both sides that connect one to one with this two light incident sides, the middle part between these both sides; After the spraying of completing steps B, the droplet of ink amount at this middle part is more than the droplet of ink amount of any sidepiece of this end face.
In step B, described light guide ink drop is sprayed by nozzle assembly, and this nozzle assembly comprises and does linear reciprocating motion at the uniform velocity and for the first nozzle that this whole end face is sprayed, the second nozzle for this end face middle part is sprayed.
In step C, utilize infrared drying device to toast the light conducting plate body that is coated with light guide ink drop.
In step C, the temperature of described baking is 40 DEG C-60 DEG C.
After completing steps A, and before carrying out step B, be also provided with steps A 1: will in light conducting plate body, need an end face that sprays light guide ink drop to carry out dust removal process.
After completing steps C, be also provided with step D: be covered with transparency protected film in light conducting plate body with the end face of light guide ink.
Described light conducting plate body is made up of acrylic, polystyrene or polycarbonate.
Light guide ink comprises white ink, leaded light powder, diluting solvent; The quality ratio of described white ink, leaded light powder, diluting solvent is (2-4): 1:(14-16); Wherein, described diluting solvent is Tianna solution or opens profit.
The quality ratio of white ink, leaded light powder, diluting solvent is 3:1:15.
Compared to existing technology, beneficial effect of the present invention is:
The step that the present invention is sprayed, toasted by employing, makes comparatively simply, can improve make efficiency, and can effectively reduce cost of manufacture; And owing to adopting the mode of spraying, the present invention can't increase along with the reducing of thickness of light guide plate its difficulty of processing, meanwhile, by the distribution of end face droplet of ink amount is rationally set, can makes whole light guide plate bright dipping more even, and can improve light utilization efficiency.
Brief description of the drawings
Fig. 1 is the process flow diagram of the first embodiment of the method for making of light guide plate of the present invention;
Fig. 2 is the process flow diagram of the second embodiment of the method for making of light guide plate of the present invention;
Fig. 3 is the process flow diagram of the 3rd embodiment of the method for making of light guide plate of the present invention;
Fig. 4 is the structural representation of light guide plate of the present invention;
Fig. 5 is the schematic diagram of spraying light guide plate.
Embodiment
Below, by reference to the accompanying drawings and embodiment, the present invention is described further, understands the present invention's technical thought required for protection so that clearer.
Embodiment mono-
As shown in Figure 1, the invention provides a kind of method for making of light guide plate, comprise the following steps,
Steps A: light conducting plate body 1 is provided, and described light conducting plate body 1 comprises relative both ends of the surface; Wherein, this light conducting plate body 1 also comprises the side being connected between both ends of the surface, and at least one side is incidence surface, and in use, light source is placed on a side of incidence surface, and the light of light source is injected in light conducting plate body 1 by incidence surface; Preferably, described light conducting plate body 1 is set to hexahedron shape (namely this light conducting plate body 1 has four sides), to expand its scope of application; Described light conducting plate body 1 is made up of acrylic (PMMA), polystyrene (PS) or polycarbonate (PC), to have good light transmission;
Step B: spraying, spray light guide ink drop to a wherein end face 2 of described light conducting plate body 1, the other end of this light conducting plate body 1 is exiting surface;
Step C: baking, the light conducting plate body 1 that is coated with light guide ink drop is toasted, make each light guide ink drop baking and curing in light conducting plate body 1.Owing to being formed as light guide ink point after each light guide ink drop drying, when use, light is injected in light conducting plate body 1 from incidence surface, and in the time that the light of light conducting plate body 1 interior transmission is mapped to each light guide ink point, there is diffuse reflection, toward all directions reflection, refraction, finally penetrate from exiting surface, so that pointolite or line source are converted into area source.
The step that the present invention is sprayed, toasted by employing, makes comparatively simply, can improve make efficiency, and can effectively reduce cost of manufacture; And owing to adopting the mode of spraying, the present invention can't increase along with the reducing of thickness of light guide plate its difficulty of processing.
Wherein, described light guide ink is existing, and the present invention can adopt existing light guide ink on the market.For example, this light guide ink can comprise following component: the polymkeric substance that polymethacrylate resin and polyester acrylic fat generation cross-linking reaction and leaded light powder generate with polymethacrylate resin, polyester acrylic fat generation graft reaction respectively; And solvent.Wherein, prepare the raw material proportioning of light guide ink as follows:
Polymethacrylate resin: 15-30 weight portion,
Described polyester acrylic fat: 1-5 weight portion,
Described leaded light powder: 2-20 weight portion,
Described solvent: 50-85 weight portion.
Wherein, described solvent is organic mixed solvent.Preferably, organic mixed solvent is your ketone of different fluorine that the volume ratio that mixes is respectively 5: 4: 1: butyl acetate: the potpourri of cyclohexanone.
And preferred, light guide ink comprises white ink, leaded light powder, diluting solvent; The quality ratio of described white ink, leaded light powder, diluting solvent is (2-4): 1:(14-16); Wherein, described diluting solvent can adopt existing.By light guide ink is rationally set, can effectively improve the appearance effect on light guide plate surface, roughly look it is transparence or fuzzy shape so that make light guide plate product.And preferred, described diluting solvent is Tianna solution or opens profit.The quality ratio of white ink, leaded light powder, diluting solvent is 3:1:15, to improve its performance.Wherein, this white ink is existing, for example, can be purchased from Orco coating company limited of Shunde District of Foshan City, and model is PS-102.
Preferably, as shown in Figure 4, described light conducting plate body 1 comprises two relative light incident sides 3, and this two light incident sides 3 is all connected between both ends of the surface; The described end face 2 that is coated with light guide ink comprises respectively the both sides 22 that connect one to one with this two light incident sides 3, the middle part 21 between these both sides 22; After the spraying of completing steps B, the droplet of ink amount at these spraying end face 2 middle parts 21 is more than the droplet of ink amount of any sidepiece 22 of this end face 2.Wherein, the width of end face 2 middle parts 21, sidepiece 22 can be set according to actual demand.By adopting said structure, in use, two groups of light sources are placed on respectively to two light incident sides 3 sides, and due to distant apart from light source of end face 2 middle parts 21, the direct light obtaining a little less than, and by rationally regulating the droplet of ink amount in these end face 2 each regions, can strengthen the ability of the end face 2 21 pairs of light in middle part, make middle part 21 irreflexive light abundanter, thereby make whole light guide plate bright dipping more even.Wherein, Fig. 4 illustrates the schematic diagram of this light guide plate product under light, can see multiple light guide ink points under light, thereby observes the distribution of droplet of ink amount.
Preferably, the ratio of the droplet of ink amount at the droplet of ink amount on the sidepiece 22 of described end face 2 and middle part 21 is: (4/7)～(2/5).
Table 1 is by the data that record that the photometry point of a light guide plate product zones of different completing is sampled; Wherein, two light incident sides 3 sides of light guide plate are provided with led photometry source, this light guide plate is made up of acrylic, and thickness is 4mm, is of a size of 1220 × 2440mm, and the ratio of the droplet of ink amount on these end face 2 sidepieces 22 and the droplet of ink amount at middle part 21 is: (4/7);
Table 1
As can be seen from the above data, the surperficial illumination of photometry point 2 and the surperficial illumination of other photometry points are more or less the same, and can make whole light guide plate bright dipping more even, and, can overall emitting brightness, the light utilization efficiency that improves light guide plate.
Preferably, step B carries out in spraying equipment, and described light guide ink drop is sprayed by the nozzle assembly of spraying equipment.Concrete, as shown in Figure 5, this nozzle assembly comprises and does at the uniform velocity linear reciprocating motion and for the first nozzle 4 that whole end face 2 is sprayed, the second nozzle 5 for these end face 2 middle parts 21 are sprayed, under the condition that can distribute in the droplet of ink amount that meets these end face 2 each regions, can also complete fast spraying process, further improve make efficiency.
Step C carries out in drying plant.Preferably, in step C, utilize infrared drying device to toast the light conducting plate body 1 that is coated with light guide ink drop, to utilize the infrared ray oven dry of heating.Preferably, in step C, the temperature of described baking is 40 DEG C-60 DEG C.And described baking temperature be 50 DEG C for optimal case of the present invention, can improve light guide ink solidification effect.
And the light guide plate of making through this method for making can be applicable in advertising lamp box, light fixture.And in order further to expand the use field of this light guide plate, can also post reflectance coating at the non-light incidence side face of light conducting plate body 1, so that it is applicable to the fields such as display screen.
Embodiment bis-
Fig. 2 illustrates the second embodiment of the method for making of light guide plate of the present invention, wherein, the difference of the present embodiment and embodiment mono-is only: after completing steps A, and before carrying out step B, be also provided with steps A 1: will in light conducting plate body 1, need an end face 2 that sprays light guide ink drop to carry out dust removal process.Preferably, in steps A 1, described light conducting plate body 1 is carried out electrostatic precipitation processing in electrostatic cleaner.Concrete, described electrostatic cleaner mainly utilize electrostatic ionic by the static on light conducting plate body 1 surface and after, and then utilize the blower fan of electrostatic cleaner that dust is blown off and siphoned away.And by adopting steps A 1, can avoid the dirt pits in light conducting plate body 1 to affect spraying effect and quality.
Embodiment tri-
Fig. 3 illustrates the 3rd embodiment of the method for making of light guide plate of the present invention; wherein; the difference of the present embodiment and embodiment mono-is only: after completing steps C, be also provided with step D: be covered with transparency protected film in light conducting plate body 1 with the end face 2 of light guide ink.This end face 2 is protected by transparency protected film, the phenomenon such as avoid occurring scratching.In actual use procedure, before light guide plate is assemblied in to lamp box or light fixture, can be by transparency protected film plaster on the exiting surface of light guide plate, so that transparency protected film is made full use of.
Preferably, in the present embodiment, also can be after completing steps A, and before carrying out step B, be also provided with steps A 1: will in light conducting plate body 1, need an end face 2 that sprays light guide ink drop to carry out dust removal process.
Above-mentioned embodiment is only the preferred embodiment of the present invention; can not limit the scope of protection of the invention with this, the variation of any unsubstantiality that those skilled in the art does on basis of the present invention and replacement all belong to the present invention's scope required for protection.
Claims (10)
1. the method for making of light guide plate, is characterized in that: comprises the following steps,
Steps A: light conducting plate body is provided, and described light conducting plate body comprises relative both ends of the surface;
Step B: spraying, to a wherein end face spraying light guide ink drop of described light conducting plate body, the other end of this light conducting plate body is exiting surface;
Step C: baking, the light conducting plate body that is coated with light guide ink drop is toasted, make each light guide ink drop baking and curing in light conducting plate body.
2. the method for making of light guide plate as claimed in claim 1, is characterized in that: described light conducting plate body comprises two relative light incident sides, and this two light incident sides is all connected between both ends of the surface; The described end face that is coated with light guide ink comprises respectively the both sides that connect one to one with this two light incident sides, the middle part between these both sides; After the spraying of completing steps B, the droplet of ink amount at this middle part is more than the droplet of ink amount of any sidepiece of this end face.
3. the method for making of light guide plate as claimed in claim 2, it is characterized in that: in step B, described light guide ink drop is sprayed by nozzle assembly, and this nozzle assembly comprises and does linear reciprocating motion at the uniform velocity and for the first nozzle that this whole end face is sprayed, the second nozzle for this end face middle part is sprayed.
4. the method for making of light guide plate as claimed in claim 1, is characterized in that: in step C, utilize infrared drying device to toast the light conducting plate body that is coated with light guide ink drop.
5. the method for making of the light guide plate as described in claim 1 or 4, is characterized in that: in step C, the temperature of described baking is 40 DEG C-60 DEG C.
6. the method for making of light guide plate as claimed in claim 1, is characterized in that: after completing steps A, and before carrying out step B, be also provided with steps A 1: will in light conducting plate body, need an end face that sprays light guide ink drop to carry out dust removal process.
7. the method for making of light guide plate as claimed in claim 1, is characterized in that: after completing steps C, be also provided with step D: be covered with transparency protected film in light conducting plate body with the end face of light guide ink.
8. the method for making of light guide plate as claimed in claim 1, is characterized in that: described light conducting plate body is made up of acrylic, polystyrene or polycarbonate.
9. the method for making of light guide plate as claimed in claim 1, is characterized in that: light guide ink comprises white ink, leaded light powder, diluting solvent; The quality ratio of described white ink, leaded light powder, diluting solvent is (2-4): 1:(14-16); Wherein, described diluting solvent is Tianna solution or opens profit.
10. the method for making of light guide plate as claimed in claim 9, is characterized in that: the quality ratio of white ink, leaded light powder, diluting solvent is 3:1:15.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410112416.2A CN103869408A (en) | 2014-03-24 | 2014-03-24 | Method for manufacturing light guide plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410112416.2A CN103869408A (en) | 2014-03-24 | 2014-03-24 | Method for manufacturing light guide plate |
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| CN103869408A true CN103869408A (en) | 2014-06-18 |
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| CN201410112416.2A Pending CN103869408A (en) | 2014-03-24 | 2014-03-24 | Method for manufacturing light guide plate |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108397702A (en) * | 2018-04-04 | 2018-08-14 | 惠州市华星光电技术有限公司 | Light guide plate, backlight module and display |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201112172Y (en) * | 2007-03-16 | 2008-09-10 | 开瑞福电子材料(深圳)有限公司 | Printing type light conducting plate for electronic product press keys light source |
| CN102116893A (en) * | 2011-03-10 | 2011-07-06 | 广州创维平面显示科技有限公司 | Light guide plate manufacturing method, light guide plate, backlight module and liquid crystal display |
| 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 |
| CN102819061A (en) * | 2012-08-24 | 2012-12-12 | 深圳市华星光电技术有限公司 | Light guide plate and manufacturing method thereof |
-
2014
- 2014-03-24 CN CN201410112416.2A patent/CN103869408A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201112172Y (en) * | 2007-03-16 | 2008-09-10 | 开瑞福电子材料(深圳)有限公司 | Printing type light conducting plate for electronic product press keys light source |
| CN102116893A (en) * | 2011-03-10 | 2011-07-06 | 广州创维平面显示科技有限公司 | Light guide plate manufacturing method, light guide plate, backlight module and liquid crystal display |
| 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 |
| CN102819061A (en) * | 2012-08-24 | 2012-12-12 | 深圳市华星光电技术有限公司 | Light guide plate and manufacturing method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108397702A (en) * | 2018-04-04 | 2018-08-14 | 惠州市华星光电技术有限公司 | Light guide plate, backlight module and display |
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Application publication date: 20140618 |