CN208999600U - A kind of light guide plate - Google Patents
A kind of light guide plate Download PDFInfo
- Publication number
- CN208999600U CN208999600U CN201821941720.8U CN201821941720U CN208999600U CN 208999600 U CN208999600 U CN 208999600U CN 201821941720 U CN201821941720 U CN 201821941720U CN 208999600 U CN208999600 U CN 208999600U
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- Prior art keywords
- guide plate
- dot
- light guide
- substrate
- light
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Abstract
The utility model discloses a kind of light guide plate, light guide plate includes substrate, and reflectance coating is arranged in the lower surface of substrate, and diffuser plate is arranged in the upper surface of substrate, and the semicolumn protrusion in bar shaped arrangement is distributed in the upper surface of substrate, and the dot of convex lens shape is distributed in lower surface.Points distributing method includes the initial value of density of the determining dot in light guide plate surface；It is fitted light distribution with probability density function, obtains the relative density distribution function of dot；According to the initial value of the width and the centre distance in X-direction of the relative density distribution function of dot and dot, obtain dot X-direction centre distance light guide plate lower surface change in location distribution function；Promote the uniformity and light efficiency of light guide plate surface.The utility model enables different regions uniformly to go out light by the variation of control light guide plate dot density.
Description
Technical field
The utility model relates to light conduction devices, more particularly, to a kind of light guide plate of extrusion forming.
Background technique
Light guide plate is commonly used in the luminous LCD backlight mould group in side, LED illumination lamp, light source is issued from side, is penetrated
Enter in light guide plate, by the dot emergent ray of light guide plate surface, makes linear light source be changed into area source by diffuser plate.Tradition
Light guide plate dot method for making have silk-screen, laser engraving, hot pressing.These techniques are required to carry out in smooth transparent plate surface
Secondary operation, so that the problem of being furnished with dot on smooth surface, being easy to produce scuffing, adsorb the various aspects such as dust, is easy to produce
Raw defective products.
Utility model content
The utility model provides a kind of light guide plate, by controlling the variation of light guide plate dot density, so that different regions
Light can uniformly be gone out.
To achieve the above object, technical solution provided by the utility model is: a kind of light guide plate, including substrate are provided,
Reflectance coating is arranged in the lower surface of the substrate, and diffuser plate is arranged in the upper surface of substrate, and the upper surface of the substrate is distributed in item
The semicolumn protrusion of shape arrangement, the dot in convex lens shape is distributed in lower surface.
The utility model is by adopting the above-described technical solution, light source is reflected out of side injection light guide plate through reflectance coating
It is projected from the dot in convex lens shape that base lower surface is distributed afterwards, most makes linear light source be changed into face light through diffuser plate afterwards
Source, so that light guide plate surface uniformly goes out light.
Above-mentioned light guide plate, the semicolumn protrusion are evenly spaced in the upper surface of substrate.Semicolumn protrusion is uniformly distributed,
It, can will be from from the light non-uniform reflection that light guide plate side is injected into lower surface in conjunction with reflectance coating.
The height of above-mentioned light guide plate, the semicolumn protrusion is 0.02-0.1mm, and diameter is 0.1-0.5mm.
Above-mentioned light guide plate, the width of the dot of the convex lens shape are 0.2-0.7mm, and height is 0.2-0.4mm.
Above-mentioned light guide plate, the dot of two neighboring convex lens shape are 0.3-1.0mm in the centre distance of X-direction,
It is 0.3-1.0mm in the centre distance of Y direction.
Above-mentioned light guide plate, the substrate with a thickness of 1.5-4.0mm.
Above-mentioned light guide plate, the material of the substrate are polystyrene, polymethyl methacrylate, styrene-methyl third
E pioic acid methyl ester copolymer or polycarbonate.
In order to solve the above technical problems, another technical solution provided by the utility model is: a kind of for light guide plate
Points distributing method includes the following steps:
Step 1: the width and height of the dot of setting substrate, and light extraction efficiency is tested, it is determined according to best light extraction efficiency
Distance of the two neighboring dot in X-axis and Y direction, to determine the initial value of density of the dot in light guide plate surface；
Step 2: being fitted the surface of intensity distribution with probability density function, the relative density distribution function of dot is obtained；
Step 3: according to the width of the relative density distribution function of dot and dot and in the centre distance of X-direction
Initial value, obtain dot X-direction centre distance light guide plate lower surface change in location distribution function；
Step 4: promoting the uniformity and light efficiency of light guide plate surface.
The above-mentioned points distributing method that the utility model uses, when light source enters inside light guide plate from two sides, according to light guide plate
The distribution of the dot on surface, light project from dot, uniform in light emission, and light extraction efficiency is high, the effect most spread afterwards through diffuser plate
It is good.
Compared with prior art, the beneficial effect that the utility model obtains is: this light guide plate is from raw particles extrusion molding
When to plate, so that the dot of light guide plate surface is directly squeezed out by mold, any secondary operation, energy are needed not move through
Enough has guide-lighting function.Due to the characteristic of light propagation, light guide plate is more from the light that the closer region of light source is emitted, and from light source
The light of farther away region outgoing is few, therefore the utility model is by the variation of control dot density, enables different regions
It is enough uniformly to go out light.The scattering that dot made of laser and silk-screen passes through light reaches the function of leaded light, and the circle of extrusion molding
Point is then to reach light-guiding function by changing the refractive direction of light, therefore by the distributed controll to dot, realize and uniformly go out light
Effect.
Detailed description of the invention
Fig. 1 is the schematic diagram of the section structure of the utility model light guide plate；
Fig. 2 is the planar structure schematic diagram of the utility model light guide plate；
Fig. 3 is the surface of intensity distribution that the utility model step 1 obtains；
Fig. 4 is step 2 dot relative probability density fonction figure in the utility model；
Fig. 5 be the utility model in step 3 dot X-direction centre distance light guide plate surface change in location
Distribution function figure；
Fig. 6 is the revised surface of intensity distribution in the utility model.
In figure, 1 is substrate, and 11 be protrusion, and 12 be dot.
Specific embodiment
The utility model is further described with reference to the accompanying drawings and detailed description.
Shown in referring to Figures 1 and 2, figure label H0 is the height of semicolumn protrusion 11, and D0 is the width of semicolumn protrusion 11
Degree, H1 are the height of the dot 12 of convex lens shape, and D1 is the width of the dot 12 of convex lens shape, and Dx is dot 12 in X-axis
The centre distance in direction, Dy are centre distance of the dot 12 in Y direction.
Reflectance coating is arranged in the lower surface of a kind of light guide plate disclosed by the utility model, including substrate 1, substrate 1, substrate 1
Diffuser plate is arranged in upper surface, and the semicolumn protrusion 11 arranged in bar shaped is distributed in the upper surface of substrate 1, and lower surface is distributed in convex
The dot 12 of lens shape.Wherein, when light source injects light from the two sides of substrate 1, in communication process, reflectance coating is for anti-
Light is penetrated, after the light reflected injects diffuser plate, diffuser plate makes linear light source be changed into area source.
Further, semicolumn protrusion 11 is evenly spaced in the upper surface of substrate 1.Further, semicolumn protrusion 11
Height is 0.02-0.1mm, and diameter is 0.1-0.5mm.
Further, the width of the dot 12 of convex lens shape is 0.2-0.7mm, and height is 0.2-0.4mm.
Further, the dot 12 of two neighboring convex lens shape is 0.3-1mm in the centre distance of X-direction, in Y-axis
The centre distance in direction is 0.3-1mm.In the present embodiment, if the width of light guide plate is bigger, the value of Dx, Dy are bigger, if leading
Tabula rasa thickness is bigger, then the value of Dx, Dy are smaller.
Further, substrate 1 with a thickness of 1.5-4.0mm.
Wherein, the material of substrate 1 is polystyrene, polymethyl methacrylate, styrene methyl methacrylate copolymerization
Object or polycarbonate.
The utility model can be process in production by single screw extrusion machine.
Referring to shown in Fig. 3 to Fig. 6, the utility model discloses a kind of points distributing methods for light guide plate, including walk as follows
It is rapid:
Step 1: the width and height of the dot of setting substrate, and light extraction efficiency is tested, it is determined according to best light extraction efficiency
Distance of the two neighboring dot in X-axis and Y direction, to determine the initial value of density of the dot in light guide plate surface；
Step 2: being fitted the surface of intensity distribution with probability density function, the relative density distribution function figure of dot is obtained；
Step 3: according to the width of the relative density distribution function of dot and dot and in the centre distance of X-direction
Initial value, obtain dot X-direction centre distance light guide plate lower surface change in location distribution function；
Step 4: promoting the uniformity and light efficiency of light guide plate surface.
In the specific implementation process, light-guide edge is assemblied among outline border the utility model, so that the edge of light guide plate
Light is not needed out, if light is leaked out from the edge of light guide plate, i.e., is leaked out out of outline border, bright border generation is will lead to, therefore, is leading
Stay the white edge of the smooth no site 5-10mm in tabula rasa edge.
The points distributing method of the utility model, it is (i.e. round that the relative density distribution function of dot is convertible into dot centre distance
Dot density)-position distribution function, it can determine the density of certain position dot according to function, the distance at dot center can be calculated.
Points distributing method described in the utility model, at the beginning of the light extraction efficiency initial value described in the first step is best light extraction efficiency
Initial value, in the case that dot centre distance is fixed value, light is uneven out, and light guiding points, that is, dot is closeer, and light extraction efficiency is higher,
When guide-lighting dot density reaches certain value, light extraction efficiency is no longer improved, the light extraction efficiency initial value obtained in the step first step
The density value of light guiding points when as reaching light extraction efficiency highest, and obtain the light distribution in Non uniform light situation at this time
Figure.
In second step, the surface of intensity distribution obtained using the first step is fitted between the senior middle school of both sides with probability density function
The low bell curve of light distribution.So that the non-uniform curve of light distribution in the first step becomes uniformly, so that light guiding points
Arrangement density is positive bell Density Distribution, obtains the relative density distribution function of dot.
In the third step, it is determined on finished product according to the relative density distribution function of second step according to the size of finished product
The guide-lighting dot density of each position is converted into the centre distance variation of each dot, show that dot Chinese and Western distance-position distribution is bent
Line.
4th stepping one step simulation and optimization.
The foregoing is merely the embodiments of the present invention, and therefore it does not limit the scope of the patent of the utility model, all
It is equivalent structure or equivalent flow shift made based on the specification and figures of the utility model, directly or indirectly uses
In other related technical areas, it is also included in the patent protection scope of the utility model.
Claims (7)
1. reflectance coating is arranged in the lower surface of a kind of light guide plate, including substrate (1), the substrate (1), the upper surface of substrate (1) is set
Set diffuser plate, it is characterised in that:, following table raised (11) in the semicolumn of bar shaped arrangement is distributed in the upper surface of the substrate (1)
EDS maps have the dot (12) in convex lens shape.
2. light guide plate according to claim 1, it is characterised in that: the semicolumn raised (11) is evenly spaced in substrate
(1) upper surface.
3. light guide plate according to claim 2, it is characterised in that: the height of the semicolumn raised (11) is 0.02-
0.1mm, diameter are 0.1-0.5mm.
4. light guide plate according to claim 2, it is characterised in that: the width of the dot (12) of the convex lens shape is
0.2-0.7mm, height are 0.2-0.4mm.
5. light guide plate according to claim 4, it is characterised in that: the dot (12) of two neighboring convex lens shape is in X-axis
The centre distance in direction is 0.3-1.0mm, is 0.3-1.0mm in the centre distance of Y direction.
6. light guide plate according to any one of claims 1 to 5, it is characterised in that: the substrate (1) with a thickness of 1.5-
4.0mm。
7. light guide plate according to claim 6, it is characterised in that: the material of the substrate (1) is polystyrene, poly- methyl
Methyl acrylate, styrene-methylmethacrylate copolymer or polycarbonate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821941720.8U CN208999600U (en) | 2018-11-23 | 2018-11-23 | A kind of light guide plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821941720.8U CN208999600U (en) | 2018-11-23 | 2018-11-23 | A kind of light guide plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208999600U true CN208999600U (en) | 2019-06-18 |
Family
ID=66807117
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821941720.8U Active CN208999600U (en) | 2018-11-23 | 2018-11-23 | A kind of light guide plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208999600U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109725379A (en) * | 2018-11-23 | 2019-05-07 | 广东欧迪明光电科技股份有限公司 | A kind of light guide plate and its points distributing method |
| CN111025451A (en) * | 2019-11-08 | 2020-04-17 | 安徽高美福电子有限公司 | Mesh point design method for changing integral density ratio of light guide plate aiming at hot pressing process |
-
2018
- 2018-11-23 CN CN201821941720.8U patent/CN208999600U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109725379A (en) * | 2018-11-23 | 2019-05-07 | 广东欧迪明光电科技股份有限公司 | A kind of light guide plate and its points distributing method |
| CN109725379B (en) * | 2018-11-23 | 2024-01-12 | 广东欧迪明光电科技股份有限公司 | Light guide plate and point distribution method thereof |
| CN111025451A (en) * | 2019-11-08 | 2020-04-17 | 安徽高美福电子有限公司 | Mesh point design method for changing integral density ratio of light guide plate aiming at hot pressing process |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: a light guide plate Effective date of registration: 20220802 Granted publication date: 20190618 Pledgee: Zhaoqing SME Financing Guarantee Co.,Ltd. Pledgor: GUANGDONG ODIMING PHOTOELECTRIC TECHNOLOGY CO.,LTD. Registration number: Y2022980011811 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |