CN1512201A - Light conducting plate producing method - Google Patents
Light conducting plate producing method Download PDFInfo
- Publication number
- CN1512201A CN1512201A CNA021606595A CN02160659A CN1512201A CN 1512201 A CN1512201 A CN 1512201A CN A021606595 A CNA021606595 A CN A021606595A CN 02160659 A CN02160659 A CN 02160659A CN 1512201 A CN1512201 A CN 1512201A
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- CN
- China
- Prior art keywords
- guide plate
- light guide
- passing board
- light
- manufacturing light
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- 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.)
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- Light Guides In General And Applications Therefor (AREA)
- Planar Illumination Modules (AREA)
Abstract
The manufacture process of light guiding plate with less moisture caused deformation includes the following steps: providing one transparent plate with one out-going plane and one bottom plane opposite to the out-going plane; setting one waterproof layer in the side of the out-going plane. The waterproof layer can prevent the moisture caused deformation and make the light guiding plate always maintain excellent optical performance.
Description
[technical field]
The present invention relates to a kind of manufacturing method of light conducting board that is used for LCD, relate in particular to a kind of manufacturing method of light conducting board that is used for the large scale liquid crystal display.
[background technology]
Because the liquid crystal itself in the display panels does not have the characteristics of luminescence, thereby, for reaching display effect, must provide a light supply apparatus to display panels, as module backlight, its function is area source abundant for display panels supply briliancy and that be evenly distributed.Light guide plate is the key element of module backlight, and it must possess the good optical design, and the light that makes light guide plate can guide light source to send converts briliancy to and colourity all can reach necessarily required area source.But, the light guide plate of large scale (more than 14 cun) generally is used for products such as notebook computer, desktop computer and LCD TV, and except that need possessed the good optical design, light guide plate itself must be difficult for affected by environment and produce deformation, otherwise, will influence the display performance of LCD.
See also Fig. 1, a kind of light guide plate 1 that adopts the prior art method for manufacturing light guide plate to make is plate shaped, and it comprises a usefulness so that the exiting surface 11 of light outgoing and one and exiting surface 11 opposed bottom surface 12.Because of this light guide plate 1 no waterproofing protection, when Gu Dangqi is arranged in wet environment, will be softening and produce as shown in Figure 2 deformation, thus influence the optical property of light guide plate 1.
The another kind of light guide plate that adopts the prior art method for manufacturing light guide plate to make can be consulted the United States Patent (USP) the 6th of bulletin on June 5 calendar year 2001,241, No. 919, the light guide plate that it disclosed as shown in Figure 3, this light guide plate 2 comprises a usefulness so that the exiting surface 21 of light outgoing and one and these exiting surface 21 opposed bottom surface 22.This exiting surface 21 is planes, and this bottom surface 22 is arc-shaped curved surfaces, and in this bottom surface 22 a plurality of coarse patterns 221 is set.But, these light guide plate 2 no waterproofing protections, also easy softening because of making moist produces deformation, thereby influences optical property.
In sum, provide a kind of difficult manufacturing method of light conducting board that produces deformation of softening because of making moist real for necessary.
[utility model content]
Easy the softening because of making moist of light guide plate of making for solution prior art method for manufacturing light guide plate produces the defective of deformation, the invention provides a kind of light guide plate that makes and is difficult for because of the softening method for manufacturing light guide plate of deformation that produces that makes moist.
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 may further comprise the steps: a light-passing board is provided, and this light-passing board comprises a usefulness so that the exiting surface of light outgoing and one and this exiting surface opposed bottom surface; Exiting surface one side at light-passing board applies a water barrier.
Compared with prior art, exiting surface one side that method for manufacturing light guide plate of the present invention is included in light-passing board applies the step of a water barrier, this water barrier can prevent that light-passing board from softening producing deformation because of making moist, thereby the light guide plate that this manufacture method of employing is made remains good optical characteristics.
[description of drawings]
Fig. 1 is a kind of sectional view that adopts the light guide plate that the prior art method for manufacturing light guide plate makes.
Fig. 2 is the deformation synoptic diagram that light guide plate shown in Figure 1 produces.
Fig. 3 is the another kind of sectional view that adopts the light guide plate that the prior art method for manufacturing light guide plate makes.
Fig. 4 is the schematic diagram of method for manufacturing light guide plate of the present invention.
Fig. 5 is the stereographic map that adopts light guide plate first embodiment that method for manufacturing light guide plate of the present invention makes.
Fig. 6 is the sectional view that adopts light guide plate second embodiment that method for manufacturing light guide plate of the present invention makes.
Fig. 7 is the sectional view that adopts light guide plate the 3rd embodiment that method for manufacturing light guide plate of the present invention makes.
[embodiment]
Method for manufacturing light guide plate of the present invention may further comprise the steps: a light-passing board is provided, and this light-passing board comprises a usefulness so that the exiting surface of light outgoing and one and this exiting surface opposed bottom surface; Exiting surface one side at light-passing board applies a water barrier.
Seeing also Fig. 4, is the schematic diagram of method for manufacturing light guide plate of the present invention, promptly adopts exiting surface (do not indicate) the coating water barrier of dip coating method light-passing board (not indicating).Be marked with liquid 74 in the container 73, this liquid 74 is generally aqueous polyurethane (PU) resin, and the temperature of this liquid 74 generally is controlled to be 40 ℃, light-passing board is placed in the liquid 74, motor 71 matches with gear 72 and controls moving up and down of light-passing board, the liquid level of water pump 75 controlling liquid 74 (not indicating) highly, is under the liquid level of this liquid 74 light-passing board all the time.In addition, except that exiting surface, other surface of light-passing board all adopts masking material (as triacetate etc.) to cover, pass through surface tension effects, on exiting surface, form a water barrier, the thickness of this water barrier can adopt Fourier transformation infrared spectrometer, and (Fourier Transform Infrared FTIR) measures (figure does not show).
See also Fig. 5, for adopting first embodiment of the light guide plate that method for manufacturing light guide plate of the present invention makes.This light guide plate 3 comprises a light-passing board 31 and a water barrier 32, and this light-passing board 31 is plate shaped, and it comprises a usefulness so that the exiting surface 311 of light outgoing and one and these exiting surface 311 opposed bottom surface 312, and this water barrier 32 is arranged on exiting surface 311 1 sides.This water barrier 32 can prevent that light-passing board 31 from softening producing deformation because of making moist, thereby makes light guide plate 3 remain good optical property.This water barrier 32 adopts dip coating method (Dipping) or whirl coating (Spin Coating) to make, and the material of this water barrier 32 generally is aqueous polyurethane (PU) resin.
In addition, (PolymethylMethacrylate PMMA) makes these light-passing board 31 employing polymethylmethacrylates.Polymethylmethacrylate has good optical characteristics and weatherability, and the transmitance of white light is up to 92%.
See also Fig. 6, it is second embodiment that adopts the light guide plate that method for manufacturing light guide plate of the present invention makes, this light guide plate 4 comprises a light-passing board 41 and two water barriers 42, this light-passing board 41 is wedge shapes, it comprises a usefulness so that the exiting surface 411 of light outgoing and one and these exiting surface 411 opposed bottom surface 412, and this two water barrier 42 is separately positioned on exiting surface 411 and the bottom surface 412.This water barrier 42 can prevent that light-passing board 41 from softening producing deformation because of making moist, thereby makes light guide plate 4 remain good optical property.
Seeing also Fig. 7, is the 3rd embodiment that adopts the light guide plate that method for manufacturing light guide plate of the present invention makes.This light guide plate 5 comprises a light-passing board 51, a water barrier 52 and a plurality of scattering point 53.This light-passing board 51 is plate shaped, and it comprises a usefulness so that the exiting surface 511 of light outgoing and one and these exiting surface 511 opposed bottom surface 512.This water barrier 52 can prevent that light-passing board 51 from softening producing deformation because of making moist, thereby makes light guide plate 5 remain good optical characteristics.
It is described that method for manufacturing light guide plate of the present invention is not limited to above-mentioned embodiment, as, the bottom surface of the light-passing board that provides in this method for manufacturing light guide plate can be arc-shaped curved surface; The light-passing board that provides in this method for manufacturing light guide plate can adopt polycarbonate, metallocene cyclic olefin copolymer or acryl material to make; But the water barrier waterproofing membrane that is provided with in this method for manufacturing light guide plate; In the step that water barrier is set of this method for manufacturing light guide plate, water barrier can be coated in other surfaces of light-passing board etc.
Claims (10)
1. a method for manufacturing light guide plate may further comprise the steps: a light-passing board is provided, and this light-passing board comprises a usefulness so that the exiting surface of light outgoing and one and this exiting surface opposed bottom surface; Exiting surface one side at this light-passing board applies a water barrier.
2. method for manufacturing light guide plate as claimed in claim 1 is characterized in that this method for manufacturing light guide plate further is included in the step that light-passing board bottom surface one side is provided with a water barrier.
3. method for manufacturing light guide plate as claimed in claim 1 is characterized in that other surfaces that this method for manufacturing light guide plate further is included in light-passing board are provided with the step of a water barrier.
4. method for manufacturing light guide plate as claimed in claim 1 is characterized in that bottom surface that this method for manufacturing light guide plate further is included in light-passing board forms the step of a plurality of scattering points.
5. method for manufacturing light guide plate as claimed in claim 1 is characterized in that this water barrier is to adopt the dip coating method to make.
6. method for manufacturing light guide plate as claimed in claim 1 is characterized in that this water barrier is to adopt whirl coating to make.
7. method for manufacturing light guide plate as claimed in claim 1 is characterized in that this method for manufacturing light guide plate further comprises the step that adopts fourier transform infrared spectroscopy to measure this waterproofing layer thickness.
8. method for manufacturing light guide plate as claimed in claim 1 is characterized in that this light-passing board is to adopt polymethylmethacrylate, polycarbonate, metallocene cyclic olefin copolymer or acryl material to make.
9. method for manufacturing light guide plate as claimed in claim 1 is characterized in that this water barrier is to adopt waterborne polyurethane resin to make.
10. method for manufacturing light guide plate as claimed in claim 1, the bottom surface that it is characterized in that this light-passing board is an arc-shaped curved surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021606595A CN1310042C (en) | 2002-12-27 | 2002-12-27 | Light conducting plate producing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021606595A CN1310042C (en) | 2002-12-27 | 2002-12-27 | Light conducting plate producing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1512201A true CN1512201A (en) | 2004-07-14 |
| CN1310042C CN1310042C (en) | 2007-04-11 |
Family
ID=34237948
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021606595A Expired - Fee Related CN1310042C (en) | 2002-12-27 | 2002-12-27 | Light conducting plate producing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1310042C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102628580A (en) * | 2011-11-30 | 2012-08-08 | 友达光电股份有限公司 | Light guide plate structure, backlight module and manufacturing method thereof |
| CN106468799A (en) * | 2015-08-20 | 2017-03-01 | 夏普株式会社 | Light guide plate, edge light type backlight and liquid crystal indicator |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3027444B2 (en) * | 1991-07-23 | 2000-04-04 | 株式会社リコー | Color liquid crystal display |
| US6241919B1 (en) * | 1998-08-07 | 2001-06-05 | Chin-Piao Kuo | Casting polymerization for producing light guide of LCD |
| JP3676260B2 (en) * | 2000-12-28 | 2005-07-27 | ナトコ株式会社 | Active energy ray curable urethane (meth) acrylate, active energy ray curable composition and use thereof |
| JP3404027B2 (en) * | 2001-04-23 | 2003-05-06 | 日本ゼオン株式会社 | Manufacturing method of polarizing film for liquid crystal display |
-
2002
- 2002-12-27 CN CNB021606595A patent/CN1310042C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102628580A (en) * | 2011-11-30 | 2012-08-08 | 友达光电股份有限公司 | Light guide plate structure, backlight module and manufacturing method thereof |
| CN106468799A (en) * | 2015-08-20 | 2017-03-01 | 夏普株式会社 | Light guide plate, edge light type backlight and liquid crystal indicator |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1310042C (en) | 2007-04-11 |
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| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070411 Termination date: 20151227 |
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| EXPY | Termination of patent right or utility model |