CN104181631B - A kind of engraving line preparation method of light guide plate - Google Patents
A kind of engraving line preparation method of light guide plate Download PDFInfo
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- CN104181631B CN104181631B CN201310196488.5A CN201310196488A CN104181631B CN 104181631 B CN104181631 B CN 104181631B CN 201310196488 A CN201310196488 A CN 201310196488A CN 104181631 B CN104181631 B CN 104181631B
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Abstract
The present invention provides a kind of engraving line preparation method of light guide plate, rule in the side of light guide plate using the method for laser engraving, the spacing of line is incrementally, thickness is 3mm light guide plate, width 800mm, length 1001.6667mm, laterally line spacing is 3.2mm, longitudinal line total number 300, and the depth of engraving is D；Relation between longitudinal pitch Sn and nth bar line is：Sn=595374803/53232110738820n2‑40229553/1194857820n+1345500/267306；Relation between carving depth D and nth bar line is：The integer that D=4/14900n+1188/14900, n are 1 150 is 1.；The integer that D=4/15000n+4/25, n are 151 300 is 2.；With CAD software draw horizontal spacing 3.2mm, longitudinal pitch be according to above formula draw S1, S2, S3 ... S149 ... S300 grid；The file of drawn grid is imported into engraving machine, 1. and 2. carving depth is set according to formula, is carved.The ℅ of the uniformity 93.6 of the light guide plate drawn, light guide plate light guide effect is good, and the uniformity is high.
Description
Technical field
The present invention relates to light guide plate manufacture technology field, relate in particular to a kind of light guide plate with engraved lines and make skill
Art.
Background technology
Light guide plate is, for base material, to be widely used in LCD display screens, notebook computer, advertising lamp with acryl (PMMA)
The backlight module technology of case, is the high-tech product that line source is changed into area source.
At present, in the market sell light guide plate preparation technology mainly have printing-type, engraving type, chemical method for etching and directly
Four kinds of injection moulding.
Wherein printing-type is to utilize the light guide ink with high reflection and high refraction on high transparency acrylic plate surface, by light
Learn principle and stamp regular light directing site.After acrylic plate completes sharp processing, by leaded light in the way of silk-screen printing
Site is imprinted on surface, the material of the site have light is reflected, the effect of high reflection, the light injected from side is changed into direction
Complanation light.The method has the double effectses by light refraction and high reflection, and good brightness, manufacture craft is simply easily mastered,
Skill provides small, low manufacture cost, can flexibly be made from small size to large-sized light guide plate.But its refraction effect to light
Slightly worse, it is impossible to high temperature resistant, in the case where lamp temperatures are higher, light directing site can be deformed, or even can be changed colour.
Engraving type is on high transparency acrylic plate surface, to carve to form regular recessed by optical principle using engraving machine
Hole dot matrix or engraved lines.When light is injected from acrylic plate side, these shrinkage pool dot matrix or engraved lines play reflect light
Effect, by light to plane refraction complanation light.
The making of light guide plate mainly has two kinds of forms, and one kind is to use laser dotting, and another carried out using engraving machine
Line.Compare from brightness and the uniformity, laser engraving is better than the effect got ready.
The laser engraving line of existing light guide plate is main as follows：
（1）Irregular engraving：
Engraving process：On the acrylic board of shaping, carved with engraving machine.
Advantage：Manufacture craft is simple, easily realizes.
Shortcoming：This engraving, does not have any rule between line and line, carve the light guide plate luminance completed relatively low, it may appear that
Local speck, whole structure is poor.
（2）It is equidistant to carve：
Engraving process：On acrylic board, horizontal spacing and the essentially equal line of longitudinal pitch are carved out with engraving machine.
Advantage：Determine after spacing, it is possible to be rapidly performed by engraving, brightness is preferable.
Shortcoming：The uniformity is not high, it may appear that close to the local bright of light source, the place away from light source is dark.
If the method rule using laser engraving carries out making light guide plate, then must pull against both the above engraving mode
Defect.
The content of the invention
The technical problems to be solved by the invention are that overcoming problems of the prior art, there is provided a kind of light guide plate
Engraving line preparation method.Being scribed ss on this method light guide plate is incrementally carved, and the spacing of engraving is in acrylic board
The heart is incremented by both sides.
A kind of engraving line preparation method of light guide plate, light guide plate is acrylic light-passing board, is used on the surface of light guide plate
The method of laser engraving is rule, and the spacing of longitudinal direction line is incrementally：
Light guide plate scribble method is as follows：
Thickness is 3mm light guide plate, and width 800mm, length 1001.6667mm, spacing of laterally ruling are 3.2mm, longitudinal direction
Line total number 300, the depth of engraving is D；
Relation between longitudinal pitch Sn and nth bar line is：
Sn=595374803/53232110738820n2-40229553/1194857820n+1345500/267306；
Relation between carving depth D and nth bar line is
D=4/14900n+1188/14900 n for 1-150 integer 1.
D=- 4/15000n+4/25 n for 151-300 integer 2.
With CAD software draw horizontal spacing 3.2mm, longitudinal pitch Sn be according to above formula draw S1, S2, S3 ...
S149 ... S300 grid；
The file of drawn grid is imported into engraving machine, 1. and 2. carving depth is set according to formula, is carved.
Beneficial effect, light guide plate of the present invention, good transmittance, good evenness.
Brief description of the drawings
Describe the present invention in detail with reference to the accompanying drawings and detailed description；
The grid schematic diagram that Fig. 1 is drawn by light guide plate scribble method of the present invention.
The grid that Fig. 2 is drawn by light guide plate scribble method of the present invention shows that origin is intended to.
Fig. 3 is that light guide plate scribble method graver of the present invention moves towards schematic diagram.
The light guide plate schematic diagram that Fig. 4 is drawn by light guide plate scribble method of the present invention.
Embodiment
In order that the technical means, the inventive features, the objects and the advantages of the present invention are easy to understand, tie below
Conjunction is specifically illustrating, and the present invention is expanded on further.
（1）The spacing that engraving machine is carved during engraving is moderate, and spacing puts greatly very much lamp piece and can be appreciated that line, shadow
The whole structure of pilot's tabula rasa；Lines in the middle of the too small light guide plate of spacing will be very close, it is impossible to realizes.
（2）To the requirement of carving depth, it is impossible to too deep to escape being classified line.
（3）The luminance uniformity of light guide plate will height.
The principle of engraving machine engraving
According to the refraction principle of light, in order to ensure the uniformity of light guide plate, the light guide plate place longitudinal direction nearer from light source
Spacing is bigger, and more remote local longitudinal pitch is just smaller.Horizontal spacing is then parallel to each other and equidistant each other.The depth of engraving
Control is in 0.08-0.12mm, diffusing lines（The line parallel with a sides）Width between 0.005-4mm.
Referring to Fig. 1, the factor of the influence light guide plate uniformity is considered below, first we assume that being the 1st close to the line of lamp bar
Root line, behind be followed successively by 2,3 ... n
Light guide plate of the thickness of light guide plate used in us is between 3-8mm, and conventional is 3mm thickness.Enter light away from,
It is so-called guide-lighting away from being exactly the length of lamp bar vertical edges.
1. it is longitudinal pitch（It is arranged vertically direction）What typically we commonly used is away from 700-1500mm into light.
2. it is horizontal spacing（Horizontally arranged direction）
3. the carving depth of our utilizations of the depth of engraving is between 0.001-1.2mm, that conventional is 0.08mm.
4. the spacing of line（Longitudinal pitch and horizontal spacing）Spacing is exactly the distance between nth bar line and (n-1)th line
, longitudinal pitch 2.5mm≤y≤5mm, when longitudinal pitch is less than 2.5mm, light guide plate center can be because lines are overstocked and go out
Existing bright line, brightness irregularities；Occur that light guide plate overall brightness is partially dark when longitudinal pitch is more than 5mm.
Thickness is 3mm light guide plate, and horizontal spacing is 3.2mm, width 800mm, length 1001.6667mm.The depth of engraving
Spend for D, D value 0.08-0.12mm, found by substantial amounts of actual test, when light guide plate is when entering light away from changing, engraving
Longitudinal pitch also to occur the requirement that certain change gets to high evenness.In substantial amounts of data, between discovery longitudinal direction
There is such a relation away from S and a stroke number of lines n：
Sn=an2+bn+c
Data of relevant data sources when number of lines n=300 is actually drawn：
| S | n |
| S1=5 | 1 |
| S70=3.224832 | 70 |
| S150=2.5 | 150 |
| S200=2.774049 | 200 |
| S250=3.607383 | 250 |
| S300=5 | 300 |
As n=1, during S1=5
5=a+b+c ①
As n=150, S150=2.5
2.5=150*150a+150b+c ②
As n=300, S300=5
5=300*300a+300b+c ③
It is by the formula that 1. 2. 3. can be obtained by data：
S=595374803/53232110738820n2-40229553/1194857820n+1345500/267306
If the difference of the spacing of nth bar line and the spacing of (n-1)th line is △ s
△s=s1-s2=a(2n-1)+b=595374803/53232110738820 (2n-1)- 40229553/
1194857820
We close to a first longitudinal pitch is set as, can obtain first longitudinal pitch by above-mentioned data is
5, can just be calculated according to △ s other longitudinal pitches for 5-595374803/53232110738820n (2n-1)+
40229553/1194857820n is by entering light away from the bar number such as following table for obtaining longitudinally ruling for 1101.6667mm：
Maximum longitudinal pitch in upper table is 5mm, and minimum longitudinal pitch is 2.5mm, and the bar number of line is 300.
The implementation steps of engraving are configured according to data above：
1. use CAD software, according to upper table data longitudinal pitch S1, S2, S3 ... S149, S300 are parallel with a sides
Line draw out.
2. after completing to the drafting of longitudinal pitch lines, to carry out drafting cross-wise lines.Because horizontal spacing is equidistant
3.2mm, a length of side are 800mm, draw out the line parallel with b sides for 500.
Complete after step 1 and 2, it is possible to obtain 800*1001.6667mm as shown in Figure 1 grid chart.
3. opening the type3 V2.0 version softwares developed by French VISION NUMERIC companies, it will be painted with CAD software
The line grid file made is imported wherein.
4. by the file of importing, pinning left button and choosing, then by F2, the relative origin of grid is determined, a left side for grid is selected
Inferior horn o points are relative origin, and X and Y value are all changed to 0mm.Such as Fig. 2.
5. determine after origin, overall mesh segmentation into single line, it is then determined that the trend of graver.Such as Fig. 3.
6. determining the carving depth of graver, carving depth is defined as D, D values 0.08-0.12mm by we.
7. the file of drawn grid is imported into engraving machine, the cutter head of engraving machine is moved to, what is determined is relative
Origin o, then resets, and allows the zero point of engraving machine and the o points of drafting grid file to overlap.
8. click starts, engraving machine will be carved according to drawn grid file.
The lamp bar test that the light guide plate that will be carved out with data above is 18.4W with the wide power of 3mm,
Nine points of random site as shown in Figure 4 are taken on light guide plate, obtained data are as follows：
The uniformity of light guide plate：93.6℅.
Conventional light guide plate performance test is as follows：
The uniformity：81.4℅.
By comparing, the light guide plate made by this method, under equal conditions, brightness, the uniformity are superior to conventional leaded light
Plate.
In conventional light guide plate manufacturing process, the carving depth of light guide plate is typically also required to become as position is different
Change.
We use scribble method of the same race, different depth of score, to make light guide plate again
During line, with the increase of line, the depth of line is also changing.The depth D of line and draw
There is following relation in the bar number n of line：
D=an+b
Data of relevant data sources when number of lines n=300 is actually drawn：
| D | n |
| D1=0.08 | 1 |
| D70=0.098523 | 70 |
| D150=0.12 | 150 |
| D200=0.106667 | 200 |
| D250=0.093333 | 250 |
| D300=0.08 | 300 |
From above-mentioned data:
D=4/14900n+1188/14900 n for 1-150 integer 1.
D=- 4/15000n+4/25 n for 151-300 integer 2.
The depth of line changes between 0.08-0.12mm, and the light guide plate luminance uniformity produced is as follows：
The uniformity：94.09℅
It is not below between 0.06-0.10mm for depth of score.
Data of relevant data sources when number of lines n=300 is actually drawn：
| D | n |
| D1=0.06 | 1 |
| D70=0.078523 | 70 |
| D150=0.1 | 150 |
| D200=0.086667 | 200 |
| D250=0.073333 | 250 |
| D300=0.06 | 300 |
When depth of score is between 0.06-0.1mm,
From D=an+b:
D=4/14900n+890/14900 n for 1-150 integer 1.
D=- 4/15000n+7/50 n for 151-300 integer 2.
Depth of score is between 0.06-0.1mm, and the light guide plate luminance uniformity produced is as follows：
The uniformity：93.4℅
It is the light guide plate that 0.08-0.12mm makes, under equal conditions, brightness, the uniformity by depth of score by comparing
Depth of score is superior in 0.06-0.1mm light guide plates.
General principle, principal character and the advantages of the present invention of the present invention has been shown and described above.The technology of the industry
Personnel are not it should be appreciated that the present invention is limited by examples detailed above, and the simply explanation described in examples detailed above and specification is of the invention
Principle, various changes and modifications of the present invention are possible without departing from the spirit and scope of the present invention, these change and
Improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention is by appended claims and its is equal
Thing is defined.
Claims (1)
1. a kind of engraving line preparation method of light guide plate, light guide plate is acrylic light-passing board, on the surface of light guide plate using sharp
Light engraving method rule, longitudinal direction line spacing be incrementally, it is characterized in that：
Light guide plate scribble method is as follows：
Thickness is 3mm light guide plate, and width 800mm, length 1001.6667mm, spacing of laterally ruling are 3.2mm, longitudinal direction line
Total number 300, the depth of engraving is D；
Relation between longitudinal pitch Sn and nth bar line is：
Sn=595374803/53232110738820n2-40229553/1194857820n+1345500/267306；
Relation between carving depth D and nth bar line is：
D=4/14900n+1188/14900 n for 1-150 integer 1.
D=-4/15000n+4/25 n for 151-300 integer 2.
Horizontal spacing 3.2mm is drawn with CAD software, longitudinal pitch Sn is according between above longitudinal pitch Sn and nth bar line
Relation formula draw S1, S2, S3 ... S149 ... S300 grid；
The file of drawn grid is imported into engraving machine, 1. and 2. carving depth is set according to formula, is carved.
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| CN201310196488.5A CN104181631B (en) | 2013-05-24 | 2013-05-24 | A kind of engraving line preparation method of light guide plate |
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|---|---|---|---|
| CN201310196488.5A CN104181631B (en) | 2013-05-24 | 2013-05-24 | A kind of engraving line preparation method of light guide plate |
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| CN104181631B true CN104181631B (en) | 2017-09-08 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1517724A (en) * | 2003-01-23 | 2004-08-04 | ���ǵ�����ʽ���� | Light guide plate and manufacturing method thereof |
| JP2004234932A (en) * | 2003-01-29 | 2004-08-19 | Asahi Techno Kk | Plane light-emitting device |
| CN101470230A (en) * | 2007-12-29 | 2009-07-01 | 上海边光实业有限公司 | Light conducting plate carved by laser impulse and method for producing the same |
| CN101592756A (en) * | 2008-05-30 | 2009-12-02 | 上海边光实业有限公司 | A kind of laser engraved linear array light guide plate and preparation method thereof |
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2013
- 2013-05-24 CN CN201310196488.5A patent/CN104181631B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1517724A (en) * | 2003-01-23 | 2004-08-04 | ���ǵ�����ʽ���� | Light guide plate and manufacturing method thereof |
| JP2004234932A (en) * | 2003-01-29 | 2004-08-19 | Asahi Techno Kk | Plane light-emitting device |
| CN101470230A (en) * | 2007-12-29 | 2009-07-01 | 上海边光实业有限公司 | Light conducting plate carved by laser impulse and method for producing the same |
| CN101592756A (en) * | 2008-05-30 | 2009-12-02 | 上海边光实业有限公司 | A kind of laser engraved linear array light guide plate and preparation method thereof |
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| CN104181631A (en) | 2014-12-03 |
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Denomination of invention: A method for making engraving and scribing of light guide plate Effective date of registration: 20220119 Granted publication date: 20170908 Pledgee: Industrial and Commercial Bank of China Limited Shanghai Songjiang sub branch Pledgor: SHANGHAI EDGE LIGHT INDUSTRY Co.,Ltd. Registration number: Y2022310000013 |
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Date of cancellation: 20230303 Granted publication date: 20170908 Pledgee: Industrial and Commercial Bank of China Limited Shanghai Songjiang sub branch Pledgor: SHANGHAI EDGE LIGHT INDUSTRY Co.,Ltd. Registration number: Y2022310000013 |
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