CN102565920A - Method for manufacturing mesh points of LGP (Light Guide Plate), LGP, backlight module and TV (Television) set - Google Patents
Method for manufacturing mesh points of LGP (Light Guide Plate), LGP, backlight module and TV (Television) set Download PDFInfo
- Publication number
- CN102565920A CN102565920A CN2012100346725A CN201210034672A CN102565920A CN 102565920 A CN102565920 A CN 102565920A CN 2012100346725 A CN2012100346725 A CN 2012100346725A CN 201210034672 A CN201210034672 A CN 201210034672A CN 102565920 A CN102565920 A CN 102565920A
- Authority
- CN
- China
- Prior art keywords
- lgp
- site
- guide plate
- light guide
- laser pulse
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Planar Illumination Modules (AREA)
Abstract
The invention provides a method for manufacturing mesh points of an LGP (Light Guide Plate). The method comprises the following step: multiple laser pulses are adopted for firing the same fixed position of the LGP so that a mesh point can be formed at the fixed position. According to the method for manufacturing the mesh points of the LGP, disclosed by the invention, since the laser pulses with low powers are adopted, the focused heat is reduced, the deformation caused by the heating of a PMMA (Polymethyl Methacrylate) sheet material is reduced, the consistency of a mesh point shape can also be ensured, thus the consistency of a reflective coefficient of each mesh point can be ensured, and the undulatory property of the LGP is reduced. The invention also provides the LGP which is manufactured by adopting the method for manufacturing the mesh points of the LGP, a backlight module with the LGP and a TV (Television) set with the backlight module.
Description
Technical field
The present invention relates to the display technique field, in particular to light guide plate mesh point method for making, LGP, module backlight and televisor.
Background technology
In LCDs, LGP is important core component, and its effect is to make pointolite such as LED, CCFL or line source change into the face light emitting source, makes various types of light sources in module panel integral body, evenly distribute.Wherein, in the site that the non-exiting surface of LGP distributes the distribution of controlling light source is played a decisive role.
At present, the site of LGP lower surface mostly adopts the silk screen printing process printing to get on, and still along with the lightening development of module form, in order to pursue better subjective effect and to cater to the lightening designing requirement of LGP, the site requires to do more and more tinyly.Simultaneously, the problem that its colour cast of silk-screen LGP is bigger also becomes the bottleneck of obstruction LGP towards the large scale development.
Therefore radium-shine LGP is born under this background, and the meticulous advantage of geneogenous low colour cast and processing site becomes the replacement scheme that has superiority very much.Though cost is higher at present, many producers have been arranged studying laser processing technology intensively to reduce cost, realize the mass commercial production.
The radium-shine LGP that has come into operation generally adopts CO
2Laser instrument, the transient thermal response that relies on laser pulse forms the spill site with the calcination gasification of PMMA surface.Radium-shine processing technology exists two problems to need to be resolved hurrily at present:
1. the thermal effect that produces when using Laser Processing can make PMMA sheet material produce thermal deformation, influences the flatness of LGP.
Usually the LGP angularity surpasses the phenomenon that 2.0mm will cause the appearance brightness irregularities of products such as module backlight, and traditional high-power monopulse processing mode can cause the thermal deformation of LGP most probably.
2. the site of the radium-shine making of monopulse of rectangular wave, it has bigger undulatory property.The form of site inwall has nothing in common with each other through regular meeting, causes the reflection coefficient of each site very inconsistent like this, causes the surface of module backlight bright dark uneven phenomenon to occur easily.
Therefore, need a kind of light guide plate mesh point manufacture craft to address the above problem.
Summary of the invention
In order to solve the problems of the technologies described above; The invention provides a kind of light guide plate mesh point manufacturing technology,, reduced heat accumulation owing to adopt low power many laser pulses; Alleviated the deformation quantity that PMMA sheet material produces owing to being heated; Can also guarantee the consistance of site form, make the reflection coefficient of each site consistent, reduce undulatory property.
According to an aspect of the present invention, a kind of light guide plate mesh point method for making is provided, has may further comprise the steps: adopted the place, same fixed position of the said LGP of a plurality of smaller power laser pulse calcinations, form the site at this place, fixed position.To each fixed position, utilize a plurality of laser pulses to come calcination PMMA sheet material, owing to adopt a plurality of laser pulses; Therefore; The intensity of each laser pulse less than before adopt the intensity of high-power monopulse laser, so reduced energy accumulating, alleviated the deformation quantity that PMMA sheet material produces because of being heated; Improve the flatness of LGP, helped to improve the assembling of module backlight.
In technique scheme, preferably, said a plurality of laser pulses are one group of a chain of laser pulse.A plurality of laser pulses can be continuous several laser pulses.
In technique scheme, preferably, the time interval between the output time of adjacent said laser pulse is 0.1 second to 0.2 second.
In technique scheme, preferably, the output power of said a plurality of laser pulses is identical.In the power that has reduced each laser pulse, can make the power of each laser pulse identical.Can reduce energy accumulating, reduce the deformation quantity of LGP.
In technique scheme, preferably, in said LGP, form a plurality of said sites.
In technique scheme, preferably, said site be shaped as ellipse.
In technique scheme, preferably, the longest diameter of said site increases and increases with said laser pulse quantity.
In technique scheme, preferably, said laser pulse is a rectangular wave.
The another aspect of basic invention also provides a kind of LGP, has the site that the light guide plate mesh point method for making described in a plurality of employings such as the above-mentioned arbitrary technical scheme is made in the said LGP.Adopt above-mentioned light guide plate mesh point method for making to make the site, can control the bent set-back of LGP, make LGP more smooth.
According to a further aspect in the invention, a kind of module backlight is provided also, has comprised aforesaid LGP.Because the flatness of LGP is improved, and helps the assembling of module backlight.
In accordance with a further aspect of the present invention, a kind of televisor is provided also, has comprised aforesaid module backlight.Adopted the televisor of above-mentioned module backlight, made Luminance Distribution backlight more all even stable, made display frame more attractive in appearance, more stable.
According to technical scheme of the present invention, the mode that a plurality of laser pulse calcinations is formed the site substitutes the mode that an original laser pulse forms the site, owing to adopt a plurality of laser pulse calcinations to form the site; The inwall form of site is consistent; Make the reflection coefficient of each site consistent, can successfully overcome the site degree of depth undulatory property problem that monopulse processing causes, make site stability be improved; And then the optical stability of raising LGP, guarantee that backlight illumination is even; Can reduce the thermal effect that instantaneous highpowerpulse causes, break the whole up into parts, make heat segmentation to discharge, alleviate the thermal deformation amount of product, thereby control the bent set-back of LGP, and then improve the structural behaviour of module backlight.
Description of drawings
Fig. 1 shows the process flow diagram of light guide plate mesh point method for making according to an embodiment of the invention;
Fig. 2 shows the synoptic diagram of pulse signal according to an embodiment of the invention;
Fig. 3 shows the shape synoptic diagram of site according to an embodiment of the invention;
Fig. 4 shows the synoptic diagram of LGP according to an embodiment of the invention;
Fig. 5 shows the synoptic diagram of traditional laser pulse control signal;
Fig. 6 shows the synoptic diagram of many laser pulses control signal according to an embodiment of the invention;
Fig. 7 shows process synoptic diagram according to an embodiment of the invention;
Fig. 8 illustrates according to an embodiment of the invention the contrast synoptic diagram in off line some form of different laser pulse quantity.
Embodiment
In order more to be expressly understood above-mentioned purpose of the present invention, feature and advantage, the present invention is further described in detail below in conjunction with accompanying drawing and embodiment.
Set forth a lot of details in the following description so that make much of the present invention, still, the present invention can also adopt other to be different from other modes described here and implement, and therefore, the present invention is not limited to the restriction of following disclosed specific embodiment.
Fig. 1 shows the process flow diagram of light guide plate mesh point method for making according to an embodiment of the invention.
As shown in Figure 1, light guide plate mesh point method for making according to an embodiment of the invention may further comprise the steps: step 102, and the place, same fixed position that adopts a plurality of laser pulse calcination LGPs, the place forms the site in the fixed position.
To each fixed position, utilize a plurality of laser pulses to come calcination PMMA sheet material, owing to adopt a plurality of laser pulses; Therefore; The power of each laser pulse so reduced energy accumulating, has alleviated the deformation quantity that PMMA sheet material produces because of being heated less than the power that adopted a pulse calcination PMMA sheet material in the past; Improve the flatness of LGP, helped to improve the assembling of module backlight.
A plurality of laser pulses can be one group of a chain of laser pulse, laser pulse signal as shown in Figure 2.
The time interval between the output time of adjacent laser pulse can be 0.1 second to 0.2 second, and the output power of a plurality of laser pulses can be identical.In the power that has reduced each laser pulse, can make the power of each laser pulse identical.
Those skilled in the art should be appreciated that the above-mentioned time interval is a kind of example, is not limited to the present invention, and it also can be the other times section, for example 0.1 second to 0.8 second.
According to technical scheme of the present invention, the mode that a plurality of laser pulse calcinations is formed the site substitutes the mode that an original laser pulse forms the site, owing to adopt a plurality of laser pulse calcinations to form the site; The inwall form of site is consistent; Make the reflection coefficient of each site consistent, can successfully overcome the site degree of depth undulatory property problem that monopulse processing causes, make site stability be improved; And then the optical stability of raising LGP, guarantee that backlight illumination is even; Can reduce the thermal effect that instantaneous highpowerpulse causes, break the whole up into parts, make heat segmentation to discharge, alleviate the thermal deformation amount of product, thereby control the bent set-back of LGP, and then improve the structural behaviour of module backlight.
Thermal effect is mainly reflected in LGP warping deformation aspect: the LGP upper surface is accepted radium-shine pulse meeting generation accumulation of heat and is expanded, and lower surface is not accepted heat, causes the upper and lower surfaces unequal power distribution, makes sheet material produce the distortion song and sticks up.
As shown in Figure 4, in LGP, form a plurality of sites.Each site adopts a plurality of pulses calcination on LGP to form, the site be shaped as ellipse (referring to Fig. 3), its inwall form is consistent, reflection coefficient is consistent, undulatory property is little.Can successfully overcome the site degree of depth undulatory property problem that monopulse processing causes, make site stability be improved, and then improve the optical stability of LGP, guarantee that backlight illumination is even.
Secondly, the longest diameter of site increases and increases with laser pulse quantity, and promptly along with the increasing of laser pulse quantity, this ellipse is just flat more.Each laser pulse can be rectangular wave.
Fig. 4 shows the synoptic diagram of LGP according to an embodiment of the invention; Have the site that the light guide plate mesh point method for making described in a plurality of employings such as the above-mentioned embodiment is made in the LGP of basic inventive embodiment, these sites are positioned on the exiting surface of LGP.
Site on this LGP has unified inwall form, has consistent reflection coefficient, and undulatory property is little, and stability is high, therefore, has avoided surface backlight bright dark uneven phenomenon to occur.
Adopt above-mentioned light guide plate mesh point method for making to make the site, reduced energy accumulating, can control the bent set-back of LGP, make LGP more smooth.
In addition, the whole machining process process is easy, need not other manufacturing process and just can obtain high performance LGP.
Usually use the sheet material of multiple-pulse method processing, its each radium-shine average energy has only 1/7th of former single pulse signal in theory, and this mode cloth can reduce the angularity of LGP significantly, makes that Luminance Distribution backlight is more stable.
The material of this LGP for example can be poly terephthalic acid second two fat (polyethylene Terephthalate; PET), polycarbonate (polycarbonate; PC) or polymethylmethacrylate (poly (methylmethacrylate) PMMA) waits transparent material.
Have following characteristics so compare with former technology:
1) site of use multiple pulses calcination fixed position, its form consistance is greatly improved, and can reduce the product undulatory property, thereby improves yield of products.
2) disperse once radium-shine energy in several wave bands, reduce heat accumulation, can alleviate the thermogenetic deformation quantity that receives of PMMA sheet material, improve the flatness of LGP, thereby help to improve the module assembling.
Module backlight according to an embodiment of the invention comprises LGP as shown in Figure 4.
Because the flatness of LGP is improved, and helps the assembling of module backlight.
This module backlight can be used any liquid crystal indicator, for example televisor.Adopted the televisor of above-mentioned module backlight, made Luminance Distribution backlight more all even stable, made display frame more attractive in appearance, more stable.
For example, the module backlight with LGP provided by the invention can also be applied to the display of computer, makes the backlight illumination of display more even.
Those skilled in the art should be appreciated that, can also be applied to billboard board and illuminating lamp according to LGP of the present invention.
Further specify according to technical scheme of the present invention below in conjunction with Fig. 5 and Fig. 6.
As shown in Figure 5; It is traditional monopulse control signal; Calcination forms the site in position, the same site of LGP to adopt individual pulse; And Fig. 6 shows the multiple-pulse control signal that the present invention adopts, and promptly intermittence is repeatedly carried out the radium-shine calcination of miniwatt on position, same site, processes required site.
The site form that adopts this mode to form changes, and becomes elongated class oval site (the about 60 μ m of minor axis, longest diameter can be adjusted along with the variation of number of pulses) from original big circular (the about 300 μ m of diameter) calcination hole, and is as shown in Figure 3.
In manufacturing process, at first need reduce the pulse output intensity of laser instrument.For example, if the power of original laser instrument output is 1 watt, then the output power with laser instrument is reduced to 0.15 watt.Revise the laser pulse input signal then, use the laser pulse of 1 watt of energy of original output continuously instead one group of miniwatt a chain of laser pulse.Promptly whenever at a distance from 0.15 watt of low-power laser pulse of just intermittent output of 0.1 second～0.2 second time.
So the laser intensity of the original monopulse of strength ratio of laser pulse of the present invention is little, it is positive to reduce energy, can alleviate the distortion that LGP sheet material produces because of being heated, and improves the flatness of LGP, helps the assembling of module.
Should be understood that the time interval between the laser pulse also is 0.1 second to 0.5 second.
The not concrete restriction of output pulse number of burning and carving the site can be adjusted the laser pulse number according to the site size of design requirement.Quantity is many more, and then the longest diameter length of site is long more, and scattered beam is many more, otherwise the longest diameter of site is short more, and scattered beam is few more.
In one group of continuous low-power laser pulse, laser instrument is because the signal input is excited, and its actual output energy can be earlier from rising to peak value (about during this period of time 0.2S left and right sides time) for a short time.Its output energy can roll back zero from peak value after waiting to stop input signal, referring to Fig. 6.So ellipse (being grain of rice shape) of the similar magnetic tape trailer crust of the site form that processes.
When adopting continuous a plurality of laser pulses that LGP is carried out calcination; According to the difference of conditions such as the material of LGP sheet material, thickness, can adjust suitable laser pulse output power, promptly in the thermal distorsion temperature limit; Select maximum radium-shine power for use; Can reduce the quantity of laser pulse so relatively, can save process time as far as possible, reduce the quantity of required processing site.
Being to replace whole square-wave pulse with four small-pulse effects in the example depicted in fig. 6, so the energy of each effective small-pulse effect is 1/7th of an original square wave energy, is the ratio of preferred front and back pulse energy.
In experimentation, find, as long as the power of laser instrument output then can keep the PMMA LGP of 3mm thickness not produce thermal deformation less than 0.15W.If increase the thickness of same sheet material, then can select more powerful pulse, if the thickness of this sheet material reduces to 2mm even thinner, then maybe pulse power be reduced to below the 0.1W.Quantity for pulse does not then require, can be according to the quantity (quantity of laser pulse is many more, and the longest diameter of site is long more) of the site length adjustment laser pulse of actual design.
Find also that in experimentation for the PMMA LGP of 3mm thickness, during smaller or equal to 0.15W, the deflection of LGP is less, and machining precision is higher, is difficult for occurring fluctuation at laser pulse.Under this power condition, can export a plurality of pulse signals, export 4 or more a plurality of laser pulse, can regulate the quantity of laser pulse according to actual optical demands.
Certainly, the above-mentioned numerical value that relates to is a kind of example, is not limited to the present invention, according to different sheet material, can select the laser pulse of different power for use.
When adopting many laser pulses control signal as shown in Figure 6; The exiting surface of laser alignment LGP radiates one group of 4 intermittent laser pulse, and the intensity of the original monopulse of strength ratio of each laser pulse is little; The site ovalize that forms; When one group of intermittent laser pulse quantity was increased to 6, the oval-shaped longest diameter of site was elongated, and it is flat that promptly original ellipse becomes.
According to different LGP material, thickness and the laser instrument of selecting for use; Can select suitable pulse output power; In the deformation range of LGP (the LGP angularity will cause module/backlight product the problem of brightness irregularities to occur above 2.0mm usually); Reduce the quantity of laser pulse, accelerate processing progress, and can guarantee performance of products.
Therefore,, successfully overcome the big problem of site degree of depth undulatory property that monopulse processing is caused, make site stability be improved, and then improve the optical stability of LGP according to technical scheme of the present invention; (thermal effect is mainly reflected in LGP warping deformation aspect: the LGP upper surface is accepted radium-shine pulse meeting and is produced accumulation of heat and expand can to reduce the thermal effect that instantaneous highpowerpulse causes; Lower surface is not accepted heat, like this upper and lower surfaces unequal power distribution can make sheet material produce distortion and song stick up), break the whole up into parts; Make heat segmentation to discharge; Alleviate the thermal deformation amount of product, thereby the bent set-back of control LGP improves the modular structure performance.
Further specify according to light guide plate mesh point method for making of the present invention below in conjunction with Fig. 7 and Fig. 8.
Fig. 7 shows process synoptic diagram according to an embodiment of the invention, and Fig. 8 illustrates according to an embodiment of the invention the contrast synoptic diagram in off line some form of different laser pulse quantity.
First comparative examples:
As shown in Figure 7; Laser instrument 700 bombards laser beam on the exiting surface of LGP, and laser pulse of every interval output in 0.15 second, exports 3 laser pulses continuously; The power of each laser pulse is 0.1 watt; 100 diverse locations on the exiting surface of this LGP bombard in this way, obtain 100 sites, suppose that the processing duration is 10 minutes.
In Fig. 8, have go up in following three ellipses, overlook the exiting surface of this LGP, the site ovalize of formation is as being positioned at the ellipse of top among Fig. 8.
Second comparative examples:
In Fig. 8, have go up in following three ellipses, overlook the exiting surface of this LGP, the site of formation is ovalize also, like the ellipse in the middle of being positioned among Fig. 8.
The 3rd comparative examples:
In Fig. 8, have go up in following three ellipses, overlook the exiting surface of this LGP, the site of formation is ovalize also, as being positioned at the ellipse of below among Fig. 8.
Three ellipses of shown in the comparison diagram 8 this can find that (D3 is the longest diameter that is arranged in the ellipse of Fig. 8 below to D3＞D2＞D1, and D2 is the longest diameter of the ellipse in the middle of being positioned at; D1 is the longest diameter of ellipse that is positioned at the top), i.e. (same LGP, same laser instrument under similarity condition; Same pulse output power); Along with increasing of laser pulse quantity, the length of the site that obtains is elongated, and ellipse is more and more flat.
Under identical conditions, the site on the same LGP is except inwall form unanimity, and its outside shape (longest diameter, area) also is consistent, so the site undulatory property that adopts this technology to make is little, has improved the performance of LGP.
From contrast, can also find that laser pulse quantity is few more, required process time is short more.
If the thickness of the LGP in above-mentioned each example is reduced 1mm, then can the output power of each laser pulse be reduced to 0.08 watt.
If the thickness of the LGP in above-mentioned each example is increased 1mm, then can the output power of each laser pulse be increased to 0.12 watt.
If increase the power of each laser pulse, number that so can corresponding minimizing laser pulse, thus reduce site process time.
Quantity for every group of laser pulse is not changeless, but decide according to the output power of the shape of the characteristic of LGP, required process time, required site and laser instrument.
Laser instrument in above-mentioned each embodiment can be the laser instrument of any kind of.
More than be described with reference to the accompanying drawings according to light guide plate mesh point method for making of the present invention, the mode that a plurality of laser pulse calcinations is formed the site substitutes the mode that an original laser pulse forms the site, and it has following advantage at least:
The inwall form of each site can be consistent; Make the reflection coefficient of each site consistent, can successfully overcome the site degree of depth undulatory property problem that monopulse processing causes, make site stability be improved; And then the optical stability of raising LGP, guarantee that backlight illumination is even;
Reduce the thermal effect that instantaneous highpowerpulse causes, break the whole up into parts, make heat segmentation to discharge, alleviate the thermal deformation amount of product, thereby control the bent set-back of LGP, and then improve the structural behaviour of module backlight;
Near the site burr is less, can the deterioration leaded light component lead rotary light performance;
Procedure of processing is easy, need not to adopt other manufacturing process just can obtain high performance LGP.
The above is merely the preferred embodiments of the present invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a light guide plate mesh point method for making is characterized in that, may further comprise the steps:
Adopt the place, same fixed position of the said LGP of a plurality of laser pulse calcinations, the place forms the site in said fixed position.
2. light guide plate mesh point method for making according to claim 1 is characterized in that, said a plurality of laser pulses are one group of a chain of laser pulse.
3. light guide plate mesh point method for making according to claim 2 is characterized in that, the time interval between the output time of adjacent said laser pulse is 0.1 second to 0.2 second.
4. light guide plate mesh point method for making according to claim 1 is characterized in that the output power of said a plurality of laser pulses is identical.
5. according to each described light guide plate mesh point method for making in the claim 1 to 4, it is characterized in that, in said LGP, form a plurality of said sites.
6. light guide plate mesh point method for making according to claim 5 is characterized in that, said site be shaped as ellipse.
7. light guide plate mesh point method for making according to claim 5 is characterized in that, said laser pulse is a rectangular wave.
8. a LGP is characterized in that, has the site that each described light guide plate mesh point method for making is made in a plurality of employings such as the claim 1 to 7 in the said LGP.
9. a module backlight is characterized in that, comprises LGP as claimed in claim 8.
10. a televisor is characterized in that, comprises module backlight as claimed in claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100346725A CN102565920A (en) | 2012-02-15 | 2012-02-15 | Method for manufacturing mesh points of LGP (Light Guide Plate), LGP, backlight module and TV (Television) set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100346725A CN102565920A (en) | 2012-02-15 | 2012-02-15 | Method for manufacturing mesh points of LGP (Light Guide Plate), LGP, backlight module and TV (Television) set |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102565920A true CN102565920A (en) | 2012-07-11 |
Family
ID=46411766
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100346725A Pending CN102565920A (en) | 2012-02-15 | 2012-02-15 | Method for manufacturing mesh points of LGP (Light Guide Plate), LGP, backlight module and TV (Television) set |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102565920A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103869540A (en) * | 2012-12-10 | 2014-06-18 | 京东方科技集团股份有限公司 | Orientation layer forming method |
| CN104459874A (en) * | 2014-12-31 | 2015-03-25 | 深圳市华星光电技术有限公司 | Method for manufacturing light guide plate |
| CN105652516A (en) * | 2016-01-04 | 2016-06-08 | 合肥京东方显示光源有限公司 | Lateral entrance type backlight module and making method and display device thereof |
| CN106199819A (en) * | 2016-09-30 | 2016-12-07 | 京东方科技集团股份有限公司 | A kind of backlight module and display device |
| CN108122703A (en) * | 2016-11-28 | 2018-06-05 | 群光电能科技股份有限公司 | Backlight module applied to light-emitting keyboard and light-emitting keyboard |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1779492A (en) * | 2004-11-19 | 2006-05-31 | 扬昕精密股份有限公司 | Light-conducting panel and production thereof |
| CN1786745A (en) * | 2004-12-11 | 2006-06-14 | 群康科技(深圳)有限公司 | Method for mfg, ligth conducting plate |
| CN101034183A (en) * | 2007-03-30 | 2007-09-12 | 苏州苏大维格数码光学有限公司 | Manufacturing method of light guiding board/ light guiding film mould core |
| US20090147538A1 (en) * | 2007-12-06 | 2009-06-11 | Tzu-Wei Wang | Light guide plate with laser process patterns on an incident plane and manufacturing method thereof |
| CN102151999A (en) * | 2011-02-10 | 2011-08-17 | 苏州茂立光电科技有限公司 | Method for manufacturing optical microstructure patterns in light guide plate |
| CN102179631A (en) * | 2011-05-18 | 2011-09-14 | 苏州德龙激光有限公司 | Device and method for processing large-breadth light guide plate |
-
2012
- 2012-02-15 CN CN2012100346725A patent/CN102565920A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1779492A (en) * | 2004-11-19 | 2006-05-31 | 扬昕精密股份有限公司 | Light-conducting panel and production thereof |
| CN1786745A (en) * | 2004-12-11 | 2006-06-14 | 群康科技(深圳)有限公司 | Method for mfg, ligth conducting plate |
| CN101034183A (en) * | 2007-03-30 | 2007-09-12 | 苏州苏大维格数码光学有限公司 | Manufacturing method of light guiding board/ light guiding film mould core |
| US20090147538A1 (en) * | 2007-12-06 | 2009-06-11 | Tzu-Wei Wang | Light guide plate with laser process patterns on an incident plane and manufacturing method thereof |
| CN102151999A (en) * | 2011-02-10 | 2011-08-17 | 苏州茂立光电科技有限公司 | Method for manufacturing optical microstructure patterns in light guide plate |
| CN102179631A (en) * | 2011-05-18 | 2011-09-14 | 苏州德龙激光有限公司 | Device and method for processing large-breadth light guide plate |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103869540A (en) * | 2012-12-10 | 2014-06-18 | 京东方科技集团股份有限公司 | Orientation layer forming method |
| CN104459874A (en) * | 2014-12-31 | 2015-03-25 | 深圳市华星光电技术有限公司 | Method for manufacturing light guide plate |
| WO2016106833A1 (en) * | 2014-12-31 | 2016-07-07 | 深圳市华星光电技术有限公司 | Method for manufacturing light guide plate |
| CN104459874B (en) * | 2014-12-31 | 2018-03-30 | 深圳市华星光电技术有限公司 | A kind of method for manufacturing light guide plate |
| CN105652516A (en) * | 2016-01-04 | 2016-06-08 | 合肥京东方显示光源有限公司 | Lateral entrance type backlight module and making method and display device thereof |
| CN106199819A (en) * | 2016-09-30 | 2016-12-07 | 京东方科技集团股份有限公司 | A kind of backlight module and display device |
| CN108122703A (en) * | 2016-11-28 | 2018-06-05 | 群光电能科技股份有限公司 | Backlight module applied to light-emitting keyboard and light-emitting keyboard |
| US10234619B2 (en) | 2016-11-28 | 2019-03-19 | Chicony Power Technology Co., Ltd. | Backlight module for light-emitting keyboard, light-emitting keyboard using same |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102565920A (en) | Method for manufacturing mesh points of LGP (Light Guide Plate), LGP, backlight module and TV (Television) set | |
| CN102159989A (en) | Optically transmissive substrates and light emitting assemblies and methods of making same, and methods of displaying images using optically transmissive substrates and light emitting assemblies | |
| CN101477274A (en) | Liquid crystal display | |
| CN102059865A (en) | Light-guiding plate and printing method thereof and backlight module | |
| CN102890307A (en) | Light guide plate, backlight module and display device | |
| CN102620193A (en) | Sectional light emitting diode (LED) backlight module and liquid crystal display device | |
| CN1087180A (en) | The back lighting device that is used for liquid crystal device | |
| JP2010170897A (en) | Edge light partial drive backlight unit, and liquid crystal display device | |
| US20130050831A1 (en) | Light guide plate and manufacturing method thereof | |
| KR20050121864A (en) | Light guide panel for backlight unit and manufacturing method thereof | |
| CN109239834B (en) | Light guide plate for high-brightness backlight module | |
| CN202469747U (en) | Sidelight-type backlight module and display device | |
| KR20120030908A (en) | Structure of backlight plate | |
| CN201803316U (en) | Backlight guide plate | |
| CN102371431B (en) | Laser processing device | |
| CN102748656A (en) | Side-in type light-emitting diode (LED) backlight device and method for eliminating firefly phenomenon of same | |
| CN202253389U (en) | Jigsaw-type three-dimensional light guide plate and lighting lamp | |
| CN202266945U (en) | Side-light type backlight module | |
| CN202204949U (en) | Two-in-one light guide plate and illuminating lamp of the same | |
| CN203949043U (en) | A kind of backlight module and display unit | |
| TWI393602B (en) | Laser process manufacturer | |
| CN103017033A (en) | Bilateral optical backlight module | |
| CN102434823B (en) | A kind of liquid crystal display and curved face reflecting type LED backlight module thereof | |
| CN102359716B (en) | A kind of liquid crystal display and flat reflective LED-backlit module thereof | |
| CN105372747A (en) | PS light guide plate with single-sided microstructure and light-out microprism structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20120711 |