CN1786745A - Method for mfg, ligth conducting plate - Google Patents
Method for mfg, ligth conducting plate Download PDFInfo
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- CN1786745A CN1786745A CN 200410077447 CN200410077447A CN1786745A CN 1786745 A CN1786745 A CN 1786745A CN 200410077447 CN200410077447 CN 200410077447 CN 200410077447 A CN200410077447 A CN 200410077447A CN 1786745 A CN1786745 A CN 1786745A
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- guide plate
- light guide
- light
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- optical scattering
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Abstract
The invention relates to light guiding plate manufacturing method. It includes the following steps: offer a basal plate; forming many light dispersion structure by inner carving method to form light guiding plate. The method can set different optical texture in the light guiding plate to increase light utilization ratio according to design demand.
Description
[technical field]
The present invention relates to a kind of light guide plate, especially relate to a kind of method for manufacturing light guide plate that can reduce optical loss, improve light utilization efficiency.
[background technology]
In recent years, along with the colorize and the maximization of LCD, its application is more extensive, as notebook computer, various desktop computer, LCD TV etc.Because LCD is a kind of passive device, itself can not be luminous, thereby need utilize the light source of a light-source system as LCD, as module backlight (Backlight Module), wherein, light guide plate is the significant components in the module backlight, is used to guide the transmission direction of sending light beam from light source, converts line source or pointolite to the area source outgoing.
In order to improve the homogeneity of beam projecting, generally a plurality of sites are set on the light guide plate surface, be used for the total reflection condition of broken beam, make the homogeneity of its scattering, and then promote the overall performance of module backlight with raising light guide plate outgoing beam in the light guide plate internal transmission.
As shown in Figure 1, a kind of light guide plate 10 of prior art is a rectangular shape, and it comprises an incidence surface 110, an exiting surface 120 and a bottom surface 140, and wherein this incidence surface 110 intersects with this exiting surface 120, and this exiting surface 120 is to be oppositely arranged with this bottom surface 140.These light guide plate 10 inside are provided with a plurality of scattering particles 160.These a plurality of scattering particles 160 are in disorder being distributed in the light guide plate 10.
The manufacture method of this light guide plate 10 is: scattering particle 160 is blended in the light guide plate material of molten state, scattering particle 160 penetrates with the light guide plate material during ejection formation, forms light guide plate 10.
Yet, because the scattering particles 160 in the light guide plate 10 are to be blended in the light guide plate material to penetrate together, can not control the distribution of scattering particle 160, thereby can't carry out optical adjustment, thus scatter incident light line and improve light utilization efficiency better.
[summary of the invention]
Can not to control the distribution of scattering particle in the prior art in order overcoming, can not to carry out the problem of optical adjustment, the invention provides a kind of optical adjustment of carrying out to improve the method for manufacturing light guide plate of light utilization efficiency in light guide plate inside.
The technical scheme that technical solution problem of the present invention is adopted is: a kind of method for manufacturing light guide plate is provided, and it comprises the steps: to provide a substrate; Engraving process forms a plurality of light diffusion points in adopting in this substrate, forms leaded light and pulls.
Compared to prior art, the optical scattering structure of the light guide plate of gained of the present invention is formed in the light guide plate behind interior engraving processing procedure, it can distribute according to the optical design needs, light is after the incidence surface incident of light guide plate, be incident upon the optical scattering structure of after optical design, arranging, again after optical scattering structure reflection from the exiting surface outgoing, can improve light utilization efficiency, also can avoid part light directly to penetrate, reduce optical loss from the opposite straight line of incidence surface.
[description of drawings]
Fig. 1 is a kind of structural perspective of prior art light guide plate.
Fig. 2 is the structural perspective of prepared light guide plate first embodiment of the present invention.
Fig. 3 is the vertical view of prepared light guide plate first embodiment of the present invention.
Fig. 4 is the front view of second embodiment of the prepared light guide plate of the present invention.
Fig. 5 is the front view of the 3rd embodiment of the prepared light guide plate of the present invention.
Fig. 6 is the front view of the 4th embodiment of the prepared light guide plate of the present invention.
Fig. 7 is the front view of the 5th embodiment of the prepared light guide plate of the present invention.
Fig. 8 is the front view of the 6th embodiment of the prepared light guide plate of the present invention.
Fig. 9 is the front view of the 7th embodiment of the prepared light guide plate of the present invention.
Figure 10 is the vertical view of the 7th embodiment of the prepared light guide plate of the present invention.
Figure 11 is the vertical view of the 8th embodiment of the prepared light guide plate of the present invention.
Figure 12 is the vertical view of the 9th embodiment of the prepared light guide plate of the present invention.
Figure 13 is the front view of the tenth embodiment of the prepared light guide plate of the present invention.
Figure 14 is the enlarged diagram of the XIV part of Figure 13.
Figure 15 is the front view of the 11 embodiment of the prepared light guide plate of the present invention.
Figure 16 is the enlarged diagram of the XVI part of Figure 15.
Figure 17 is the front view of the 12 embodiment of the prepared light guide plate of the present invention.
[embodiment]
Manufacturing method of light conducting board step of the present invention is as follows:
Carry out optical design and carry out optical analogy.
One laser sub-marker is provided, imports the data of optical design in this laser sub-marker and be converted to machining information and program.
One substrate is provided, and the material of this substrate is a transparent organic resin, also can be glass.
Drive this laser sub-marker and make it in this substrate, form a plurality of light diffusion points, form leaded light and pull by machining information and program.But the structure of scattered beams such as that this a plurality of light diffusion point can be processed as is hemispherical, spherical, taper or inverted pyramid type.
Manufacturing method of light conducting board of the present invention can also adopt the interior engraving technology of ultrasound wave to form this a plurality of light diffusion points in substrate except that can adopting the body laser inner carving lithography.
Method for manufacturing light guide plate of the present invention is compared to the method for manufacturing light guide plate of prior art, light diffusion point is not to form simultaneously when being shaped with light guide plate, but behind substrate forming, process, can improve light utilization efficiency this moment according to the distribution of the required control light diffusion point of actual design.
Hereinafter will narrate the embodiment of the light guide plate that makes by above-mentioned method for manufacturing light guide plate.
Seeing also Fig. 2, is the structural upright synoptic diagram of prepared light guide plate first embodiment of the present invention.This light guide plate 20 comprises an incidence surface 201, an exiting surface 202 that links to each other with incidence surface 201 and one and exiting surface 202 opposed bottom surface 203.The inside of light guide plate 20 is provided with a plurality of optical scattering structures 204, and optical scattering structure is to process in light guide plate 20 through methods such as laser, ultrasound waves.This light guide plate 20 is plate shaped light guide plate, also can be the wedge type light guide plate.
Seeing also Fig. 3, is the vertical view of light guide plate first embodiment of the present invention.This optical scattering structure 204 is hemispherical, and it is evenly distributed on the same plane.When light penetrates through light source (figure does not show), after incidence surface 201 enters light guide plate 20, be incident upon optical scattering structure 204, light again by exiting surface 202 outgoing, changes the light ray propagation direction after reflecting on the optical scattering structure 204.
The optical scattering structure 204 that light guide plate first embodiment of the present invention will be arranged on light guide plate 20 inside is designed to dots structure, the light that light source sends is incident upon optical scattering structure 204 after entering light guide plate 20, after reflecting, optical scattering structure 204 places penetrate again, and incident ray need pass through a plurality of pass patterns from the rectilinear propagation that the light inlet side arrives opposite side in the prior art, and be incident to next pass pattern again after the reflection on each pass pattern, increase propagation path of light, cause optical loss, outgoing light homogeneity is relatively poor, and the pass pattern is fixed on a position, be unfavorable for carrying out optical adjustment, compared to prior art, the transport interface of light of the present invention in light guide plate is less and light path is shorter, can reduce optical loss.
Seeing also Fig. 4, is the front view of prepared light guide plate second embodiment of the present invention.The light guide plate 30 of present embodiment and first embodiment institute difference are: more away from incidence surface 301, the diameter of optical scattering structure 304 is bigger.Because light source is arranged on incidence surface 301 1 sides, then the opposite light path of light arrival incidence surface 301 is longer, light intensity will be reduced, the diameter of optical scattering structure 304 is set to more away from incidence surface 301, diameter is bigger, can can further improve light utilization efficiency in the reflection of strengthening light away from the light source place, also improve outgoing light homogeneity simultaneously.
Seeing also Fig. 5, is the front view of prepared light guide plate the 3rd embodiment of the present invention.The light guide plate 40 of present embodiment and first embodiment institute difference are: more away from incidence surface 401, the spacing that optical scattering structure is 404 is littler.Because light source is arranged on incidence surface 401 1 sides, then the opposite light path of light arrival incidence surface 401 is longer, light intensity will be reduced, the spacing that optical scattering structure is 404 is set to more away from incidence surface 401, spacing is littler, can can further improve light utilization efficiency in the reflection of strengthening light away from the light source place, also improve outgoing light homogeneity simultaneously.
Seeing also Fig. 6, is the front view of prepared light guide plate the 4th embodiment of the present invention.Present embodiment and first embodiment institute difference are: two layers of optical scattering structure 504 of tool in the light guide plate 50, it is to stagger up and down to be evenly distributed on two Different Plane.Two layers of optical scattering structure 504 are set, can better destroy the total reflection condition of light, emergent light is more evenly distributed in the light guide plate internal transmission.
Seeing also Fig. 7, is the front view of prepared light guide plate the 5th embodiment of the present invention.Present embodiment is the combination of second embodiment and the 4th embodiment, that is, two layers of optical scattering structure 604 of tool in the light guide plate 60, it is to stagger up and down to be evenly distributed on two Different Plane, and more away from incidence surface 601, the diameter of optical scattering structure 604 is bigger.Except that can better destroying light the total reflection condition of light guide plate internal transmission, also can further improve light utilization efficiency in the reflection of strengthening light away from the light source place, improve outgoing light homogeneity, emergent light is more evenly distributed.
Seeing also Fig. 8, is the front view of prepared light guide plate the 6th embodiment of the present invention.Present embodiment is the combination of the 3rd embodiment and the 4th embodiment, that is, the two-layer optical scattering structure 704 of tool in the light guide plate 70, it is to stagger up and down to be evenly distributed on two Different Plane, and more away from incidence surface 701, the spacing that optical scattering structure is 704 is littler.Can further improve light utilization efficiency in the reflection of strengthening light away from the light source place, improve outgoing light homogeneity, also can better destroy the total reflection condition of light, emergent light is more evenly distributed in the light guide plate internal transmission.
Seeing also Fig. 9 and Figure 10, is respectively the front view and the vertical view of prepared light guide plate the 7th embodiment of the present invention.The light guide plate 80 of present embodiment comprises an incidence surface 801, an exiting surface 802 that links to each other with incidence surface 801 and one and exiting surface 802 opposed bottom surface 803.The inside of light guide plate 80 is provided with a plurality of optical scattering structures 804.As shown in figure 10, optical scattering structure 804 is to be distributed in the same plane, and optical scattering structure 804 dislocation 1/2 spacing of the optical scattering structure 804 of odd column and even column.The optical scattering structure 804 of odd column and even column is set to mutual dislocation, can strengthens the refraction of 804 pairs of incident raies of optical scattering structure, avoid part light directly from the opposite outgoing of incidence surface 801.
Seeing also Figure 11, is the vertical view of prepared light guide plate the 8th embodiment of the present invention.Present embodiment is the combination of second embodiment and the 7th embodiment, that is, and and the odd column of the optical scattering structure 904 in the light guide plate 90 and even column 1/2 spacing that misplaces, and more away from incidence surface 901, the diameter of optical scattering structure 904 is more greatly.The structure of this light guide plate 90 can be strengthened the refraction of incident ray, also can further improve light utilization efficiency in the reflection of strengthening light away from the light source place, also improves outgoing light homogeneity simultaneously.
Seeing also Figure 12, is the structural representation of prepared light guide plate the 9th embodiment of the present invention.Present embodiment is the combination of the 3rd embodiment and the 7th embodiment, that is, and and the odd column of the optical scattering structure 1004 in the light guide plate 100 and even column 1/2 spacing that misplaces, and heal away from incidence surface 1001, the spacing that optical scattering structure is 1004 is littler.The structure of this light guide plate 100 can be strengthened the refraction of incident ray, also can further improve light utilization efficiency in the reflection of strengthening light away from the light source place, also improves outgoing light homogeneity simultaneously.
Seeing also Figure 13 and Figure 14, is respectively the enlarged diagram of XIV part among the structural representation of prepared light guide plate the tenth embodiment of the present invention and Figure 13.1104 spacings of the optical scattering structure of present embodiment light guide plate 110 are very close, and optical scattering structure is small-sized, cause visual inspection to obtain being in the light guide plate continuously arranged v-shaped structure 114.This structural design can reflection ray, improves light utilization efficiency.
Also can in required locating the v-shaped structure that disconnects arrangement be set according to the design needs in the light guide plate 110 of the tenth embodiment, the setting of also each v-shaped structure can being staggered is to improve light utilization efficiency.
Seeing also Figure 15 and Figure 16, is respectively the enlarged diagram of XVI part among the structural representation of prepared light guide plate the 11 embodiment of the present invention and Figure 15.The optical scattering structure 1204 of present embodiment light guide plate 120 is with the tenth embodiment, but, reflecting surface 124 is arranged and formed to optical scattering structure 1204 in light guide plate 120, because optical scattering structure 1204 is different with the refractive index of light guide plate 120, incident ray exposes to reflecting surface 124, light better can be reflexed to exiting surface, improve light utilization efficiency.
Except that the arrangement mode of the 11 embodiment, multirow reflecting surface structure also can be set, and each the row reflecting surface stagger mutually up and down, can better improve light utilization efficiency.In addition, the spacing of reflecting surface also can be more away from incidence surface, and spacing is littler.
Seeing also Figure 17, is the structural representation of prepared light guide plate the 12 embodiment of the present invention.It is the distortion of the 11 embodiment: the reflection direction odd column of optical scattering structure 1304 formed reflectings surface is opposite with even column, and the light guide plate of this structure can be used on lighting at two sides.
The prepared light guide plate of the present invention is not limited to above-mentioned embodiment, it also can be the combined deformation of above-mentioned embodiment, the reflecting surface that is made of light diffusion point also can be set to curved surface, and each structure also can be discontinuously arranged in light guide plate, also can be distributed in the Different Plane.Because optical scattering structure is arranged on light guide plate inside, the processing that also can atomize on the light guide plate surface makes emergent ray more even.In addition, optical scattering structure also can change structure according to quantity of light source in the light guide plate of the present invention, as, when in the light guide plate left and right sides light source being set, the spacing of optical scattering structure can be set to littler away from the incidence surface spacing, and promptly the density of optical scattering structure is in the center maximum.
Claims (5)
1. method for manufacturing light guide plate, it comprises the steps:
One substrate is provided;
Engraving process forms a plurality of optical scattering structures in adopting in this substrate, forms light guide plate.
2. method for manufacturing light guide plate as claimed in claim 1 is characterized in that: further comprise an optical design step, it carried out before substrate is provided.
3. method for manufacturing light guide plate as claimed in claim 2 is characterized in that: comprise that further one is machining information and program step with the optical design transformation of data, it carries out after the optical design step.
4. method for manufacturing light guide plate as claimed in claim 3 is characterized in that: engraving process is the body laser inner carving carving method in this.
5. method for manufacturing light guide plate as claimed in claim 3 is characterized in that: engraving process is engraving process in the ultrasound wave in this.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410077447 CN1786745A (en) | 2004-12-11 | 2004-12-11 | Method for mfg, ligth conducting plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410077447 CN1786745A (en) | 2004-12-11 | 2004-12-11 | Method for mfg, ligth conducting plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1786745A true CN1786745A (en) | 2006-06-14 |
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ID=36784279
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410077447 Pending CN1786745A (en) | 2004-12-11 | 2004-12-11 | Method for mfg, ligth conducting plate |
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| Country | Link |
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| CN (1) | CN1786745A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102062893A (en) * | 2010-11-11 | 2011-05-18 | 深圳安嵘光电产品有限公司 | Light guide plate manufactured by inner carving, manufacture method thereof and lighting lamp |
| CN102261575A (en) * | 2010-05-28 | 2011-11-30 | 鸿富锦精密工业（深圳）有限公司 | Backlight module |
| CN102298169A (en) * | 2011-08-24 | 2011-12-28 | 深圳市华星光电技术有限公司 | Light guide plate and manufacturing method thereof |
| CN102565920A (en) * | 2012-02-15 | 2012-07-11 | 青岛海信电器股份有限公司 | Method for manufacturing mesh points of LGP (Light Guide Plate), LGP, backlight module and TV (Television) set |
| CN103913798A (en) * | 2014-03-28 | 2014-07-09 | 京东方科技集团股份有限公司 | Light guide plate, backlight module, display device and method for manufacturing light guide plate |
| CN105940323A (en) * | 2014-01-29 | 2016-09-14 | 康宁公司 | Laser featured glass for display illumination |
| CN108267810A (en) * | 2018-03-02 | 2018-07-10 | 深圳创维－Rgb电子有限公司 | A kind of light guide plate, backlight module and display equipment |
-
2004
- 2004-12-11 CN CN 200410077447 patent/CN1786745A/en active Pending
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102261575B (en) * | 2010-05-28 | 2014-07-16 | 鸿富锦精密工业（深圳）有限公司 | Backlight module |
| CN102261575A (en) * | 2010-05-28 | 2011-11-30 | 鸿富锦精密工业（深圳）有限公司 | Backlight module |
| CN102062893A (en) * | 2010-11-11 | 2011-05-18 | 深圳安嵘光电产品有限公司 | Light guide plate manufactured by inner carving, manufacture method thereof and lighting lamp |
| CN102298169A (en) * | 2011-08-24 | 2011-12-28 | 深圳市华星光电技术有限公司 | Light guide plate and manufacturing method thereof |
| WO2013026214A1 (en) * | 2011-08-24 | 2013-02-28 | 深圳市华星光电技术有限公司 | Light guide plate and manufacturing method thereof |
| CN102565920A (en) * | 2012-02-15 | 2012-07-11 | 青岛海信电器股份有限公司 | Method for manufacturing mesh points of LGP (Light Guide Plate), LGP, backlight module and TV (Television) set |
| CN105940323A (en) * | 2014-01-29 | 2016-09-14 | 康宁公司 | Laser featured glass for display illumination |
| US10288792B2 (en) | 2014-01-29 | 2019-05-14 | Corning Incorporated | Laser featured glass for display illumination |
| CN105940323B (en) * | 2014-01-29 | 2019-07-12 | 康宁公司 | Laser feature glass for display illumination |
| CN103913798A (en) * | 2014-03-28 | 2014-07-09 | 京东方科技集团股份有限公司 | Light guide plate, backlight module, display device and method for manufacturing light guide plate |
| CN103913798B (en) * | 2014-03-28 | 2015-11-25 | 京东方科技集团股份有限公司 | Light guide plate, backlight module, display device and method for manufacturing light guide plate |
| US10215906B2 (en) | 2014-03-28 | 2019-02-26 | Boe Technology Group Co., Ltd. | Light guide plate, backlight module, and method for manufacturing light guide plate |
| CN108267810A (en) * | 2018-03-02 | 2018-07-10 | 深圳创维－Rgb电子有限公司 | A kind of light guide plate, backlight module and display equipment |
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