CN1506701A - Light conducting plate and its making process - Google Patents
Light conducting plate and its making process Download PDFInfo
- Publication number
- CN1506701A CN1506701A CNA021496528A CN02149652A CN1506701A CN 1506701 A CN1506701 A CN 1506701A CN A021496528 A CNA021496528 A CN A021496528A CN 02149652 A CN02149652 A CN 02149652A CN 1506701 A CN1506701 A CN 1506701A
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- China
- Prior art keywords
- light
- board
- passing board
- manufacturing
- light conducting
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Abstract
The light conducting plate includes one light transmitting plate and several scattering points. The light transmitting plate includes one emergent plane for light beam to emerge and one bottom plane opposite to the emergent plane. The emergent plane is rough and the scattering points are set in the bottom plane of the light transmitting plate. The light conducting plate has relatively high emergent light homogeneity. In addition, the present invention also provides the making process of the light conducting plate.
Description
[technical field]
The present invention relates to a kind of light guide plate and manufacture method thereof that is used for flat-panel screens, relate in particular to a kind of light guide plate and manufacture method thereof of tool diffusion function.
[background technology]
Because the liquid crystal itself in the LCD is not had a characteristics of luminescence, thereby, for reaching display effect, must provide a planar light source device to LCD, as backlight module, its function is to provide briliancy fully and the area source that is evenly distributed for LCD.
The prior art backlight module is made of light source, reflecting plate, light guide plate, diffuser plate and layers of prisms etc., and wherein light guide plate is the key component in the backlight module, its role is to convert incident light to area source.For the briliancy that makes this area source is more evenly distributed, in light guide plate exit facet side one diffuser plate is set usually.
A kind of prior art backlight module sees also No. the 486101st, the TaiWan, China patent announcement (consulting Fig. 1) of bulletin on May 1st, 2002, this backlight module 100 comprises a layers of prisms 130, a diffuser plate 120 and a light guide plate 110 of arranging in regular turn, and one line source 140 being set in these light guide plate 110 1 sides, this layers of prisms 130 is made up of digonous runner plate 131 and 133.From the light process light guide plate 110 that line source 140 sends,, and then pass through diffuser plate 120 and layers of prisms 130 from one side diffusion ejaculation towards diffuser plate 120.
In addition, the bottom surface 150 of light guide plate 110 is coated with a reflection horizon, and after the light that line source 140 sends entered from light guide plate 110 side end, the reflection through the reflection horizon was from penetrating towards the one side diffusion of diffuser plate 120.
These light guide plate 110 bright dipping briliancy own are even inadequately, and diffuser plate 120 need be set, so that the abundant scattering of emergent light and reach the briliancy homogenising.But, the material cost height of diffuser plate 120, and have two-layer light transmission interface between light guide plate 110 and the diffuser plate 120, certain optical loss can be caused in this two-layer light transmission interface, causes briliancy to reduce, and influences the whole optical property of backlight module 100.
In sum, provide the uniform light guide plate of a kind of bright dipping briliancy very necessary.
[utility model content]
The even defective of bright dipping luminance nonuniformity for overcoming the prior art light guide plate the invention provides the uniform light guide plate of a kind of bright dipping briliancy.
The present invention also provides a kind of above-mentioned manufacturing method of light conducting board.
The technical scheme that technical solution problem of the present invention is adopted is: a light guide plate is provided, comprise a light-passing board and a plurality of scattering point, this light-passing board comprises a usefulness so that the exiting surface of light beam outgoing and one and this exiting surface opposed bottom surface, and this exiting surface has certain roughness, and these a plurality of scattering points are positioned at the bottom surface of this light-passing board.
Manufacturing method of light conducting board provided by the 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 beam outgoing and one and this exiting surface opposed bottom surface; The scattering point of a plurality of regular distribution is set in the bottom surface of light-passing board; Exiting surface to this light-passing board carries out the precise finiss polishing.
Compared with prior art, a plurality of scattering points of light guide plate setting of the present invention can make light beam generation scattering and the reflection that is incident to light-passing board, carry out internal communication, and then the condition of total reflection takes place in the light beam that destroys incident from the side in light-passing board, make light beam from the even outgoing of the exiting surface of light-passing board, and then obtain area source.In addition, the exiting surface of light-passing board can further spread because a plurality of scattering point causes the light beam of inhomogeneous briliancy distribution, and then make the briliancy of outgoing beam more even through the precise finiss polishing step.
[description of drawings]
Fig. 1 is a kind of three-dimensional exploded view of prior art backlight module.
Fig. 2 is the light-passing board synoptic diagram of light guide plate of the present invention.
Fig. 3 is the synoptic diagram of light guide plate of the present invention after the light-passing board surface forms scattering point.
Fig. 4 is the synoptic diagram of light guide plate of the present invention behind the precise finiss polishing step.
[embodiment]
The step that manufacturing method of light conducting board of the present invention comprises to be provided light-passing board, form a plurality of scattering points and light-passing board is carried out the precise finiss polishing.
See also Fig. 2, at first, provide a light-passing board 20, comprise an exiting surface 21 and one and these exiting surface 21 opposed bottom surface 22.This light-passing board 20 be shaped as wedge shape, it can adopt transparent synthetic resin material or glass to make.
, see also Fig. 3,, form a plurality of equally distributed protrusion scattering points 221 in the bottom surface 22 of light-passing board 20 by the net-point printing disposal route thereafter.The material that these a plurality of scattering points 221 adopt is high diverging light material, and its shape can be column, spherical or tetrahedron.These a plurality of scattering points 221 are evenly distributed on the bottom surface 22 of light-passing board 20, it can make from the light beam generation scattering and the reflection of the side incident of light-passing board 20, broken beam makes the exiting surface 21 even outgoing of light beam from light-passing board 20, and then obtains area source in the light-passing board 20 inner conditions that total reflection takes place.
See also Fig. 4, then, the exiting surface 21 of this light-passing board 20 is carried out the precise finiss polishing step, behind the precise finiss polishing step, the exiting surface 21 of light-passing board 20 has certain roughness, in order to further diffusion because the briliancy outgoing beam pockety that caused of a plurality of scattering points 221.Wherein, the polishing rotating speed of this precise finiss polishing step is 5～10rpm, and the grinding media is Al
2O
3The potpourri of powder and water, this Al
2O
3The proportioning of powder and water is 1: 8, Al
2O
3The particle diameter of powder is 0.2～15 μ m.The polishing time of this precise finiss polishing step is 2～3600sec, and polishing vertical ballast is 3～5kg.
See also Fig. 4 again, light guide plate 10 of the present invention comprises a light-passing board 20 and a plurality of scattering points 221.This light-passing board 20 comprises a usefulness so that the exiting surface 21 of light beam outgoing and one and these exiting surface 21 opposed bottom surface 22, and this exiting surface 21 has certain roughness, and these a plurality of scattering points 221 are arranged at the bottom surface 22 of this light-passing board 20.
In addition, manufacturing method of light conducting board of the present invention is not limited to the description of present embodiment.As, light guide plate also can be plate shaped light guide plate; The distribution of scattering point can have various ways, as its size, density can be along increasing gradually away from incident direction; The formation method of scattering point also can be used the method for chemical etching or mechanical texture; The grinding media of precise finiss polishing step also can adopt Ce
2O
5The potpourri of powder and water, this Ce
2O
5The proportioning of powder and water is 1: 10, this Ce
2O
5The particle diameter of powder is 0.2～15 μ m.
Claims (14)
1. light guide plate comprises: a light-passing board, this light-passing board comprise a usefulness so that the exiting surface of light beam outgoing and one and this exiting surface opposed bottom surface it is characterized in that this exiting surface has certain roughness, and the bottom surface of light-passing board are provided with a plurality of scattering points.
2. light guide plate as claimed in claim 1 is characterized in that this light-passing board is a wedge shape or plate shaped.
3. light guide plate as claimed in claim 1 is characterized in that these a plurality of scattering points evenly distribute in the bottom surface of light-passing board.
4. light guide plate as claimed in claim 1 is characterized in that the size of these a plurality of scattering points, density increase along a direction gradually in the bottom surface of light-passing board.
5. manufacturing method of light conducting board 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 beam outgoing and one and this exiting surface opposed bottom surface; Form the scattering point of a plurality of regular distribution in the bottom surface of this light-passing board; The exiting surface of this light-passing board is carried out forming the precise finiss polishing of certain roughness.
6. manufacturing method of light conducting board as claimed in claim 5, the polishing rotating speed that it is characterized in that this precise finiss polishing step is 5～10rpm.
7. manufacturing method of light conducting board as claimed in claim 6, the polishing time that it is characterized in that this precise finiss polishing step is 2～3600sec.
8. manufacturing method of light conducting board as claimed in claim 7, the vertical ballast that it is characterized in that this precise finiss polishing step is 3～5kg.
9. manufacturing method of light conducting board as claimed in claim 8, the grinding media that it is characterized in that this precise finiss polishing step is Al
2O
3The potpourri of powder and water, this Al
2O
3The proportioning of powder and water is 1: 8.
10. manufacturing method of light conducting board as claimed in claim 9 is characterized in that this Al
2O
3The particle diameter of powder is 0.2～15 μ m.
11. the described manufacturing method of light conducting board of claim 8, the grinding media that it is characterized in that this precise finiss polishing step is Ce
2O
5The potpourri of powder and water, this Ce
2O
5The proportioning of powder and water is 1: 10.
12. manufacturing method of light conducting board as claimed in claim 11 is characterized in that this Ce
2O
5The particle diameter of powder is 0.2～15 μ m.
13. manufacturing method of light conducting board as claimed in claim 5 is characterized in that this light-passing board is a wedge shape or plate shaped.
14. manufacturing method of light conducting board as claimed in claim 5 is characterized in that these a plurality of scattering points adopt net-point printing disposal route or method for chemially etching or mechanical texture method to form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021496528A CN100412572C (en) | 2002-12-12 | 2002-12-12 | Light conducting plate and its making process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021496528A CN100412572C (en) | 2002-12-12 | 2002-12-12 | Light conducting plate and its making process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1506701A true CN1506701A (en) | 2004-06-23 |
| CN100412572C CN100412572C (en) | 2008-08-20 |
Family
ID=34233730
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021496528A Expired - Fee Related CN100412572C (en) | 2002-12-12 | 2002-12-12 | Light conducting plate and its making process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100412572C (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104254735A (en) * | 2012-04-24 | 2014-12-31 | 高通Mems科技公司 | Light guide with narrow angle light output and methods |
| WO2018036207A1 (en) * | 2016-08-25 | 2018-03-01 | 中兴通讯股份有限公司 | Light guide plate and light-emitting structure |
| CN108919412A (en) * | 2018-06-12 | 2018-11-30 | 苏州市商祺光电有限公司 | A kind of trapezoidal glass light guide plate of high-performance ultrathin |
| CN110148354A (en) * | 2019-05-27 | 2019-08-20 | Oppo广东移动通信有限公司 | Backlight module, display screen component and electronic equipment |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0618879A (en) * | 1991-12-27 | 1994-01-28 | Mitsubishi Rayon Co Ltd | Surface light source element |
| JP3799749B2 (en) * | 1997-06-23 | 2006-07-19 | セイコーエプソン株式会社 | LIGHTING DEVICE, LIQUID CRYSTAL DISPLAY DEVICE, AND ELECTRONIC DEVICE |
| JPH11202331A (en) * | 1998-01-20 | 1999-07-30 | Starlite Co Ltd | Light guide plate |
| JPH11326898A (en) * | 1998-05-11 | 1999-11-26 | Toshiba Corp | Reflection type liquid crystal display device |
| JP2001297615A (en) * | 2000-04-12 | 2001-10-26 | Keiwa Inc | Optical sheet and backlight unit using the same |
-
2002
- 2002-12-12 CN CNB021496528A patent/CN100412572C/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104254735A (en) * | 2012-04-24 | 2014-12-31 | 高通Mems科技公司 | Light guide with narrow angle light output and methods |
| WO2018036207A1 (en) * | 2016-08-25 | 2018-03-01 | 中兴通讯股份有限公司 | Light guide plate and light-emitting structure |
| CN108919412A (en) * | 2018-06-12 | 2018-11-30 | 苏州市商祺光电有限公司 | A kind of trapezoidal glass light guide plate of high-performance ultrathin |
| CN110148354A (en) * | 2019-05-27 | 2019-08-20 | Oppo广东移动通信有限公司 | Backlight module, display screen component and electronic equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100412572C (en) | 2008-08-20 |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080820 Termination date: 20151212 |
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| EXPY | Termination of patent right or utility model |