CN1580830A - Method for limiting pattern for a light plate - Google Patents
Method for limiting pattern for a light plate Download PDFInfo
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- CN1580830A CN1580830A CN 03152607 CN03152607A CN1580830A CN 1580830 A CN1580830 A CN 1580830A CN 03152607 CN03152607 CN 03152607 CN 03152607 A CN03152607 A CN 03152607A CN 1580830 A CN1580830 A CN 1580830A
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- guide plate
- light guide
- light
- pattern
- sheet metal
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- Light Guides In General And Applications Therefor (AREA)
Abstract
The present invention relates to a method for making light-conducting plate limited pattern. Said light-conducting plate is mounted in a liquid crystal display, and said method includes the following steps: providing a metal plate with several holes, and sticking said metal plate over the light-conducting plate, providing a sprayer for spraying printing ink; then placing said sprayer over the metal plate and spraying said printing ink from said sprayer to make said printing ink be passed through all the holes to form a pattern on said light-conducting plate. Said pattern can be used for diffusing the light entered into said light-conducting plate.
Description
Technical field
The present invention relates to a kind of method, particularly relate to the job operation of the light guide plate pattern that a kind of manufacture craft is easy and the pattern completion rate is high in a light guide plate limiting pattern.
Background technology
Backlight module is one of important device of lcd products, has been widely used at present on the Related products such as digital camera, mobile phone, personal digital assistant (PDA), computer monitor and flat-surface television.Generally speaking, backlight module is the back side that is arranged at display panel mostly, includes light source (light source generator), light guide plate, reflector plate, diffuser plate (diffusion sheet) and several blooming pieces or prismatic lens (prism sheet).Light guide plate is used for the light source that light source produces is diffused to display panel, and diffuser plate is used for light source is evenly disperseed, and blooming piece or prismatic lens place the diffuser plate top, are used for improving brightness of backlight module and homogeneity.
But the backlight module summary is divided into " straight-down negative (direct-underlying) " and " side-light type (edge light) " two kinds of designs.The direct type backlight module design is that light source generator is placed the display panel back side, because of accommodation space is bigger, can use a plurality of fluorescent tubes to improve the intensity of light source.Therefore, the display panel of primary demand higher brightness, large-size, for example the LCD monitor of high brightness or outdoor use or LCD TV promptly are fit to adopt direct type backlight module to be used as display light source.
Please refer to Fig. 1, Fig. 1 is the structural profile synoptic diagram of existing bottom-lighting type back light module 10.As shown in Figure 1, direct type backlight module 10 is located at the below of a display panels 12.Direct type backlight module 10 includes at least one light source 14, one light guide plate 16 is located at light source 14 tops, one diffusion sheet 18 is located between light guide plate 16 and the display panels 12, one prismatic lens 20 is located at diffusion sheet 18 tops, and one reflector plate (reflecting sheet) 22 be located at light source 14 belows, direct type backlight module 10 also comprises a shell (housing) 24.Light guide plate 16 is used for the light uniformly dispersing of light source 14 generations.In general, the employed light guide plate of direct type backlight module is a tabular, and shape is shown in the light guide plate among Fig. 1 16.
Please refer to Fig. 2, Fig. 2 is the structural profile synoptic diagram of an existing side light type back light module 50.Side light type back light module is that light source is placed side, user's demands such as to reduce the thickness of backlight module, that this kind design is considered is light, thin, power saving, so present stage the LCD panel that mainly uses mobile computer to use.Backlight module 50 includes a wedge shape light guide plate 52, by a cold cathode fluorescent lamp (cold cathodefluorescent lamp, CCFL) light source 54 of Zu Chenging is located at light guide plate 52 sides, a diffusion sheet 56 is located at light guide plate 52 tops, one first prismatic lens 58 and one second prismatic lens 60 and is located at diffusion sheet 56 tops in regular turn, and a reflector plate 62 is located at light guide plate 52 bottom surfaces.As shown in Figure 2, existing side light type back light module 50 uses the light guide plate 52 of wedge-shaped design, and light source 54 is located at the end face of light guide plate 52 thick sides, makes light that cold-cathode tube produces enter light guide plate 52 in the mode of end face irradiation.Enter the thin end conduction to light guide plate 52 of the light of light guide plate 52 because produce total reflection.Bottom surface of light guide plate forms a special pattern, when light is incident upon light guide plate 52 bottom surfaces, can adjust the angle of reflection because of the pattern of light guide plate 52 bottom surfaces, makes the light guide plate 52 can be uniformly with the light directed toward display panel.
From the above, light guide plate is one of vital part of backlight module, and its function is to guide the scattering of light direction.Bottom surface of light guide plate is provided with a pattern, is used for evenly deriving light, improving the briliancy of display panel, and guarantees the homogeneity of display panel brightness.The production method of existing light guide plate pattern has two kinds according to manufacture craft, first kind of mode is utilization screen painting (screen printing) mode, on bright alkene (acryl) flat board, make the material of apparatus " high reflectance " and " not extinction ", stamp circular or square pattern at bottom surface of light guide plate.The second way is to utilize mould, and directly injection mo(u)lding forms and has the light guide plate of pattern, and its mode please refer to Fig. 3.Fig. 3 is the synoptic diagram of existing light guide plate injection mo(u)lding.To have earlier on the thin sheet of metal 70 smooth master molds (or minute surface die) 72 of a light guide plate pattern, carry out matched moulds then, male model 74 and master mold 72 are combined closely in injection forming mold.At this moment, raw material (be generally propylene, be commonly called as acryl) is injected die cavity 76 along the direction of arrow by the injection hole of male model 74, and cooperate injection machine, hot press etc. to duplicate board, the light guide plate pattern transfer on acrylic plate, is finished the making of light guide plate.
Yet in existing light guide plate manufacturing technology, shortcomings such as fixture cost height (for example half tone consume) and pattern errors are big are arranged all, cause light guide plate manufacturer can't reduce cost of manufacture and can't promote the pattern precision.Therefore, if can develop that a kind of manufacture craft is simple, design transfer accurately and fixture cost and all low light guide plate pattern job operation of coefficient of losses, will help to improve product percent of pass.
Summary of the invention
Fundamental purpose of the present invention is to provide a kind of manufacture craft easy, can accurately finish the light guide plate method of patterning again, to solve the above problems.
The invention provides and a kind ofly limit method of patterning on a light guide plate, wherein this light guide plate is installed in the liquid crystal indicator.This method includes the following step.At first, provide a sheet metal (metal filterplate), and this sheet metal has a plurality of holes, again sheet metal is attached on the light guide plate.Then, provide a shower nozzle (spray nozzle) that is used for spraying a printing ink, this shower nozzle is placed the sheet metal top.At last, and printing ink spilt (spray) from shower nozzle, make printing ink pass this a plurality of holes, on light guide plate, form a pattern, and this pattern is used for diffusing into the light of this light guide plate.
Method of the present invention mainly is to process on the light guide plate of tentatively finishing, and utilize to spray the mode of printing ink, printing ink is passed have the sheet metal of light guide plate pattern hole, is attached on the light guide plate, just finishes the making of light guide plate picture on surface.The method according to this invention, backlight module manufacturer can adjust ink ejection amount according to the demand of light guide plate, forms the light guide plate pattern of different-thickness, so only need use single sheet metal, just can produce the light guide plate of different demands.
In addition, be used for shifting the mould of light guide plate pattern in the inventive method, the technology that penetrates with etching forms a plurality of holes with light guide plate pattern on sheet metal, so the error that can avoid machining to produce, the light guide plate pattern that can accurate complete reservation has microstructure improves the diffusion of light-guide plate guides light and makes the equally distributed usefulness of light.Moreover, manufacture craft of the inventive method and follow-up fixture method for cleaning be all simpler than existing method, save time, and the fixture coefficient of losses is low, therefore on whole light guide plate manufacture craft, can reduce cost of manufacture significantly, effectively improve problems such as present light guide plate manufacture craft that manufacturer faces trouble, cleaning difficulty and die cost are too high.
Description of drawings
Fig. 1 is the diagrammatic cross-section of existing bottom-lighting type back light module structure;
Fig. 2 is the diagrammatic cross-section of an existing side light type back light module structure;
Fig. 3 is the method synoptic diagram of the injection mo(u)lding of an existing wedge shape light guide plate;
Fig. 4 forms the synoptic diagram of light guide plate pattern method for the present invention;
Fig. 5 forms the process flow diagram of light guide plate pattern method for the present invention.
Embodiment
Please refer to Fig. 4, Fig. 4 forms the synoptic diagram of light guide plate pattern method for the present invention.The inventive method utilizes a sheet metal 102 as the mould that shifts the light guide plate pattern earlier, and the technology so that etching penetrates is formed on predetermined light guide plate pattern on the sheet metal 102.In this step, at first on sheet metal 102, form a photoresist layer, then use photomask with predetermined light guide plate pattern, this photoresist layer is carried out gold-tinted photoetching making technology.Then, removal has the photoresist layer segment of light guide plate pattern, and then utilize etchant to remove the part metals thin plate 102 that is not hidden by the photoresist layer, make and form a plurality of holes 104 on the sheet metal 102, remove the photoresist layer at last again, finish the making of design transfer to the mould sheet metal 102, this process is called yellow-light etching process.Relevant for yellow-light etching process is prior art, so do not give unnecessary details the associated materials of its manufacture craft details and use at this.In preferred embodiment of the present invention, sheet metal 102 employed materials can be beryllium (Be) metal or nickel (Ni) metal.
When forming light guide plate 106 patterns, at first light guide plate 106 is fixed on the board (figure does not show), again sheet metal 102 is fitted tightly on light guide plate 106.Then use a shower nozzle 108,, on sheet metal 102, spray (spray) and go out trickle printing ink 110 according to about the direction of arrow shown in Figure 4 or move forward and backward.Printing ink 110 will pass the hole on the sheet metal 102, and form this predetermined light guide plate pattern on light guide plate 106, via as follow-up manufacture crafts such as cooling sets, printing ink will be fixed on the light guide plate 106 at last, finish the processing of light guide plate pattern.Method of the present invention is used the printing ink with optical scattering property, so the formed light guide plate pattern of printing ink, can make light toward each angular spread, reaches the function of light-guide plate guides light scattering direction.No matter be the exiting surface or the incidence surface of light guide plate, all can use the inventive method to finish the making of light guide plate picture on surface, to increase the optical activity of leading of light guide plate.In the present invention, can need according to the design of light guide plate 106, the sprinkling amount of control printing ink, produce different pattern thickness, also can when making sheet metal 102, consider the set position of light source generator, the pattern that design density, varies in size, cooperate the control of ink ejection amount again, make light guide plate can in backlight module, bring into play the highest effectiveness.
Please refer to Fig. 5, Fig. 5 forms the process flow diagram of light guide plate pattern method for the present invention.Comprehensive the above, the inventive method includes the following step:
Step 210: a sheet metal is provided, and is good with beryllium or nickel metal material;
Step 220: the technology by etching penetrates, predetermined light guide plate pattern is formed at this sheet metal, make this sheet metal have a plurality of holes;
Step 230 a: light guide plate is fixed on the board, again this sheet metal is fitted tightly on this light guide plate;
Step 240: use about a shower nozzle or move forward and backward to spray trickle printing ink on this sheet metal;
Step 250: the printing ink that shower nozzle sprayed can pass these a plurality of holes and form predetermined pattern on this light guide plate, and this moment, the China ink that goes out of may command shower nozzle was measured the thickness that decides pattern;
Step 260: finish the design producing on this light guide plate.
Compare with existing screen painting production method, the employed sheet metal of the inventive method has advantages such as clean easily and coefficient of losses is low than existing half tone, and the present invention sprays with printing ink and forms pattern, and is more accurate than the formed pattern of screen painting, and lower error is arranged.On the other hand, weak point process time that the manufacture craft of the inventive method is more required than existing injection moulding printing transferring method, die cost is also lower, the completeness of pattern greatly improves, no matter and be that wedge shape light guide plate or flat light guide plate all can be used the making that method of the present invention is finished the light guide plate pattern, increase substantially the light guide plate product percent of pass, reduce production costs, improve the market competitiveness of light guide plate manufacturer.
The above only is preferred embodiment of the present invention, and all equalizations of doing according to claim of the present invention change and modify, and all should belong to the covering scope of patent of the present invention.
Claims (7)
1. one kind limits a method of patterning in a light guide plate, and this light guide plate is installed in the liquid crystal indicator, and this method comprises the following steps:
(a) provide a sheet metal, this sheet metal has a plurality of holes;
(b) this sheet metal is attached on this light guide plate;
(c) provide a shower nozzle, this shower nozzle is in order to spray a printing ink; And
(d) this shower nozzle is placed this sheet metal top also this printing ink is spilt (spray) from this shower nozzle, this printing ink passes these a plurality of holes and form a pattern on this light guide plate, and this pattern is used to diffuse into the light of this light guide plate.
2. the method for claim 1, wherein this pattern has a thickness, and this thickness is controlled with the quantity of ink that passes a plurality of holes.
3. the method for claim 1, wherein these a plurality of holes form on this sheet metal with etching mode.
4. the method for claim 1, wherein this sheet metal is smooth and closely with on this light guide plate fits.
5. the method for claim 1, wherein this sheet metal is beryllium (Be) metal or nickel (Ni) metal.
6. the method for claim 1, wherein step (b) is that this sheet metal is attached on the incidence surface of this light guide plate.
7. the method for claim 1, wherein step (b) is that this sheet metal is attached on the exiting surface of this light guide plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03152607 CN1281977C (en) | 2003-07-31 | 2003-07-31 | Method for limiting pattern for a light plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03152607 CN1281977C (en) | 2003-07-31 | 2003-07-31 | Method for limiting pattern for a light plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1580830A true CN1580830A (en) | 2005-02-16 |
| CN1281977C CN1281977C (en) | 2006-10-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03152607 Expired - Fee Related CN1281977C (en) | 2003-07-31 | 2003-07-31 | Method for limiting pattern for a light plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1281977C (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008134988A1 (en) * | 2007-05-08 | 2008-11-13 | Taiyen Lin | Light guiding structure and manufacturing of the same |
| CN101526640B (en) * | 2008-03-04 | 2012-10-31 | 中强光电股份有限公司 | Light guide plate and method for manufacturing same |
| CN103792613A (en) * | 2012-11-02 | 2014-05-14 | 华宏新技股份有限公司 | Preparation method for light guide panel |
| CN103901524A (en) * | 2012-12-27 | 2014-07-02 | 鸿富锦精密工业（深圳）有限公司 | Light guide plate and manufacturing method thereof |
| CN104169635A (en) * | 2012-03-30 | 2014-11-26 | 武藤工业株式会社 | Light-guide-plate creation method and device |
| CN108318961A (en) * | 2018-03-27 | 2018-07-24 | 东莞市银泰丰光学科技有限公司 | A kind of glass backlight and its manufacture craft |
| CN109849543A (en) * | 2019-02-28 | 2019-06-07 | 苏州天禄光科技股份有限公司 | A kind of direct press type printing technology of light guide plate |
-
2003
- 2003-07-31 CN CN 03152607 patent/CN1281977C/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008134988A1 (en) * | 2007-05-08 | 2008-11-13 | Taiyen Lin | Light guiding structure and manufacturing of the same |
| CN101526640B (en) * | 2008-03-04 | 2012-10-31 | 中强光电股份有限公司 | Light guide plate and method for manufacturing same |
| CN104169635A (en) * | 2012-03-30 | 2014-11-26 | 武藤工业株式会社 | Light-guide-plate creation method and device |
| CN103792613A (en) * | 2012-11-02 | 2014-05-14 | 华宏新技股份有限公司 | Preparation method for light guide panel |
| CN103901524A (en) * | 2012-12-27 | 2014-07-02 | 鸿富锦精密工业（深圳）有限公司 | Light guide plate and manufacturing method thereof |
| CN108318961A (en) * | 2018-03-27 | 2018-07-24 | 东莞市银泰丰光学科技有限公司 | A kind of glass backlight and its manufacture craft |
| CN108318961B (en) * | 2018-03-27 | 2024-04-19 | 东莞市银泰丰光学科技有限公司 | Glass backlight plate and manufacturing process thereof |
| CN109849543A (en) * | 2019-02-28 | 2019-06-07 | 苏州天禄光科技股份有限公司 | A kind of direct press type printing technology of light guide plate |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1281977C (en) | 2006-10-25 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20061025 |