CN106597598A - Novel backlight source light guide plate - Google Patents
Novel backlight source light guide plate Download PDFInfo
- Publication number
- CN106597598A CN106597598A CN201611267345.9A CN201611267345A CN106597598A CN 106597598 A CN106597598 A CN 106597598A CN 201611267345 A CN201611267345 A CN 201611267345A CN 106597598 A CN106597598 A CN 106597598A
- Authority
- CN
- China
- Prior art keywords
- light guide
- optics
- guide plate
- scattering netted
- semi
- Prior art date
- 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.)
- Pending
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Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
- G02B6/0015—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it
- G02B6/0016—Grooves, prisms, gratings, scattering particles or rough surfaces
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
- G02B6/0023—Means for improving the coupling-in of light from the light source into the light guide provided by one optical element, or plurality thereof, placed between the light guide and the light source, or around the light source
- G02B6/0031—Reflecting element, sheet or layer
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
- G02B6/0038—Linear indentations or grooves, e.g. arc-shaped grooves or meandering grooves, extending over the full length or width of the light guide
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
- G02B6/0055—Reflecting element, sheet or layer
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Planar Illumination Modules (AREA)
Abstract
The invention relates to a novel backlight source light guide plate which comprises a rectangular optical PMMA substrate, reflector plates disposed on the non-incident light side of the optical PMMA substrate, and an optical reflective film. The surface of the optical PMMA substrate is convexly provided with a plurality of semi-cylindrical light guide microstructures arranged in parallel. The lower surface of the optical PMMA substrate is concavely provided with a plurality of rows of semi-spherical scattering netted dots. All the scattering netted dots in the same row constitute a micro lens array. The semi-cylindrical light guide microstructures and the semi-spherical scattering netted dots are integrally formed on the optical PMMA substrate through molding. The reflector plates and the optical reflective film are pasted to the optical PMMA substrate by ultraviolet curing pressure-sensitive adhesive. The incident light side of the optical PMMA substrate is provided with an LED light source installation slot. The width and length of all the reflector plates are consistent with those of the sides of the optical PMMA substrate. All the micro lens arrays and all the semi-cylindrical light guide microstructures are arranged orthogonally. With the light guide plate adopted, a narrow-bezel and lightweight liquid crystal display can be designed.
Description
Technical field
The present invention relates to a kind of backlight part, concretely relates to a kind of Novel backlight light guide plate, more particularly to
A kind of highly integrated light guide plate.
Background technology
Existing backlight is substantially by LED light source, light guide plate, reflecting plate, diffuser plate, prism add lustre plate and fixed support etc.
Composition, wherein light guide plate are a considerable building blocks in backlight, and light guide plate is mainly used in send out from LED light source
The line source that goes out it is uniform and complete reflex to diffuser plate and with upper-part to form area source, so as to light whole backlight,
As can be seen here the performance quality of backlight depends primarily in most cases light guide plate.Existing light guide plate is using optical grade
Acrylic/PC plate material, then with having high reflectance and the not hitech materials of extinction, at the acryl plates bottom of optical grade
Face stamps light guiding points with UV screen printing technologies.The light issued from lamp is drawn using optical grade acryl plates sub- in optical grade
The stop of gram force plate surface, when light is mapped to each light guiding points, reflected light can be toward all angles diffusion, then destruction reflection
Condition is projected by light guide plate front.By various densitys, light guiding points not of uniform size, light guide plate uniformly light-emitting can be made.Light guide plate
What the distribution of bottom surface light scattering dot matrix decide light guide plate goes out optical property, its processing technology from early stage silk-screen printing technique to
Integrated injection molding process changeover；Microlens array and microprism array technology become the mainstream technology of high-grade light guide plate design,
Mould machining accuracy has reached micron order；Another development trend of light guide plate is Integration Design, with reach it is few with and without
Blooming piece, reduce material cost, realize the lightening purpose of back light system.
The content of the invention
It is an object of the invention to provide a kind of Novel backlight light guide plate, is integrated with light shielding part, favorably on the light guide plate
In the narrow frame design for realizing backlight, in addition, being integrated with high light reflectivity film in the bottom of the light guide plate, backlight can be effectively reduced
The thickness in source, facilitates implementation the lightening design of LCDs.
To achieve these goals, the technical solution used in the present invention is, a kind of Novel backlight light guide plate, including rectangle
Optics PMMA substrates, the reflector plate being arranged on the non-incident plain edge of optics PMMA substrates and it is arranged on optics PMMA base plate bottoms
Optics reflecting film, to be provided with some semi-cylindrical leaded lights be arrangeding in parallel micro- for the upper surface protrusion of the optics PMMA substrates
Structure, is arranged with the hemispherical scattering netted dot of some rows in the lower surface of the optics PMMA substrates, all positioned at same a line dissipate
Penetrate site and constitute a microlens array, the semi-cylindrical leaded light micro structure and hemispherical scattering netted dot are molding and project into
Type is arranged on the upper and lower surface of optics PMMA substrates, and the reflector plate and optics reflecting film are pressure-sensitive by ultraviolet light polymerization
Together with optics PMMA substrate stickings, the incident plain edge of the optics PMMA substrates offers LED light source mounting groove to glue, owns
The width and length of reflector plate and the side dimension of optics PMMA substrates（Including width and length）It is consistent, all lenticulees
Array and all semi-cylindrical leaded light micro structure orthogonal relationship arrangements.
Used as a modification of the present invention, the thickness of the optics PMMA substrates is 0.5-5mm, and the optical reflection is thin
Film adopts thickness for the PET reflection film of 0.1-0.35mm.
As a modification of the present invention, positioned at the radius of all hemispherical scattering netted dot of same microlens array
Distance according to the incident plain edge of distance is in ascending structure distribution, and all hemispherical positioned at same microlens array dissipates
The arrangement density for penetrating site is in ascending distribution according to the distance of the incident plain edge of distance, that is, be located at into light proximal end scattering netted dot
The little arrangement density of radius it is little, and the big arrangement density of the radius that enters light far-end scattering netted dot is big.
It is to be spacedly distributed positioned at all scattering netted dots of same microlens array as a modification of the present invention,
The interval of two neighboring microlens array with more and more remote with the distance of incident plain edge and become increasingly nearer, and positioned at same
The size of all scattering netted dots of one microlens array is consistent.
It is closely coupled between adjacent two semi-cylindricals leaded light micro structure as a modification of the present invention.
Used as a modification of the present invention, the reflecting surface of the optics reflecting film is in rough shape, by inciting somebody to action
Reflector design is into rough shape so that after the reflected face reflection of light of directive optics reflecting film, in dispersed
Directive optics PMMA substrates, it is ensured that be irradiated to the uniformity of the light of optics PMMA substrates, and can effectively prevent light leak.
Relative to prior art, the light shielding part and bloom of non-incident plain edge are integrated with the light guide plate for being proposed of the present invention
Reflectance coating, overall construction design is ingenious rationally, light good airproof performance, and light utilization is high, can be easily achieved the high light of large scale
The backlight of evenness, can effectively reduce the thickness and border width of backlight, so as to be beneficial to realize the lightening of LCDs
And narrow frame design.Due to the upper and lower surface of optics PMMA substrates be provided with mutually orthogonal semi-cylindrical leaded light micro structure and
Microlens array so that the light guide plate has higher injection light luminance uniformity, while can effectively improve sending out LED light source
The efficiency of light energy utilization for going out, so as to be capable of achieving the side light-in backlight of Ultrathin high-brightness degree, and right using the light guide plate design
During the less demanding side light-in backlight of brightness, can lack with or without traditional multilamellar diffuser plate and prism add lustre plate, enter
And the lightening of this kind of backlight can be also realized while the cost of side-edge type backlight is reduced.Further, since in light
The incident plain edge for learning PMMA substrates offers LED light source mounting groove, consequently facilitating accurately LED light source is fixed on into light guide plate
On incident plain edge, while be also beneficial to the fixation to LED light source, prevent its for a long time using and be shifted over and affect the back of the body
The performance of light source.
Description of the drawings
Fig. 1 is the structural representation of the preferred embodiment of the present invention.
Fig. 2 is the cross section structure schematic diagram of the preferred embodiment of the present invention.
Fig. 3 is the scattering netted dot distribution schematic diagram of the preferred embodiment of the present invention.
In figure：1- optics PMMA substrates, 2- reflector plates, 3- optics reflecting films, 4-LED light source mounting grooves, 5- semicolumns
Shape leaded light micro structure, the hemispherical scattering netted dots of 6-.
Specific embodiment
In order to deepen the understanding of the present invention and understanding, below in conjunction with the accompanying drawings the invention will be further described and introduces.
Such as Fig. 1-Fig. 3, a kind of Novel backlight light guide plate, including rectangular optical PMMA substrate 1, it is arranged on optics PMMA
Reflector plate 2 on the non-incident plain edge of substrate 1 and the optics reflecting film 3 for being arranged on the bottom of optics PMMA substrates 1, wherein, light
The thickness for learning PMMA substrates 1 is 0.5-5mm, and refractive index is 1.49, and critical angle is 42.2 °, and the reflector plate 2 and optical reflection are thin
Film 3 is pasted together by UV-light solidified pressure-sensitive with optics PMMA substrates 1, and the reflector plate 2 is used for optics PMMA
Substrate 1 takes the light spilt on incident plain edge and is reflected back in optics PMMA substrates 1, so as to while shading is played, improve light source
Send the utilization rate of light.The optics reflecting film 3 preferably adopts thickness for the PET reflection film of 0.1-0.35mm, filling in it
There is inorganic particulate so that reflecting surface is in rough shape so that the reflected face reflection of light of directive optics reflecting film 3
Afterwards, in dispersed directive optics PMMA substrates 1, it is ensured that be irradiated to the uniformity of the light of optics PMMA substrates 1, and can be effective
Prevent light leak.And the luminous reflectance of this kind of PET reflection film is up to more than 95%, the brightness of light guide plate 30%-60% can be lifted, and
The power consumption of the 30%-50% of LED light source can be reduced.
In addition, the upper surface protrusion of the optics PMMA substrates 1 to be provided with some semi-cylindrical leaded lights be arrangeding in parallel micro-
It is closely coupled between structure 5, and adjacent two semi-cylindricals leaded light micro structure 5, it is preferred that all semi-cylindrical leaded lights are micro-
The radius span of structure 5 is 0.015-0.05mm, is calculated using micro-optic and binary optical iterative algorithm etc..This
Sample the bright uniformity projected from the inside of optics PMMA substrates 1 can be caused good and injection light can near vertical directive be arranged on
In liquid crystal display above backlight, while can also avoid top setting multilamellar diffuser plate and prism in light guide plate from adding lustre to
Plate, so as to reducing the thickness of backlight and then facilitating implementation the lightening design of backlight.
The hemispherical scattering netted dot 6 of some rows is arranged with the lower surface of the optics PMMA substrates 1, positioned at the institute of same a line
There is scattering netted dot 6 to constitute a microlens array, be to divide at equal intervals positioned at all scattering netted dots 6 of same microlens array
Cloth, the interval of two neighboring microlens array is with more and more remote with the distance of incident plain edge and become increasingly nearer, and position
It is consistent in the size of all scattering netted dots 6 of same microlens array.Optics is coupled into due to all from incident plain edge
During propagating forward, luminous flux reduces the conduction light of PMMA substrates 1 with the increase of distance, therefore, in optics PMMA
The bottom of substrate 1 arranges scattering netted dot 6 and constantly the conduction light into optics PMMA substrates 1 can be scattered, and light can be by
The upper surface of optics PMMA substrates 1 is projected.Additionally, in order that the conduction light into optics PMMA substrates 1 can be propagated as far as possible
Remote distance, will be located at the radius of all hemispherical scattering netted dot 6 of same microlens array according to the incident plain edge of distance
Distance is in ascending structure distribution, positioned at the arrangement density of all hemispherical scattering netted dot 6 of same microlens array
Distance according to the incident plain edge of distance is in ascending distribution, that is, be located at close into the little arrangement of radius of light proximal end scattering netted dot 6
Degree is little, and the big arrangement density of radius for entering light far-end scattering netted dot 6 is big, namely straight in the scattering netted dot 6 at LED light source
Footpath is little, and big away from the diameter of scattering netted dot 6 at LED light source.In so ensuring that each region of optics PMMA substrates 1
The area of scattering netted dot 6 is directly proportional to the luminous flux from upper surface outgoing, and ratio is equal to the area ratio in this region and above incides
Luminous flux on this region.
The semi-cylindrical leaded light micro structure 5 and hemispherical scattering netted dot 6 are molding ejection formation and are arranged on optics
The upper and lower surface of PMMA substrates 1, formed precision height and long service life.The incident plain edge of the optics PMMA substrates 1 is offered
LED light source mounting groove 4, consequently facilitating accurately LED light source is fixed on incident plain edge, while being also beneficial to LED light source
Fixation, prevent its for a long time using and be shifted over.
In addition, the side dimension of the width and length of all reflector plates 2 and optics PMMA substrates 1（Including width and length）
It is consistent, so as to reflector plate 2 can be caused perfectly to be fitted on the non-incident plain edge of optics PMMA substrates 1, prevents light leak simultaneously
Improve the efficiency of light energy utilization.All microlens arrays and all semi-cylindrical leaded light micro structure 5 orthogonal relationship arrangements, can be overall
Improve the guiding property of light guide plate.
Additionally, the reflecting surface of the optics reflecting film 3 is in rough shape, by by reflector design into concavo-convex
Uneven shape so that after the reflected face reflection of light of directive optics reflecting film 3, in dispersed directive optics PMMA substrates
1, it is ensured that be irradiated to the uniformity of the light of optics PMMA substrates 1, and it is anti-to be prevented effectively from the light at the edge of optics PMMA substrates 1
Penetrate, absorb and the phenomenon such as light leak, effectively increase light utilization, increased light from the upper surface of optics PMMA substrates 1
Outgoing uniformity.
It is all from incident plain edge be coupled into light guide plate conduction light light guide plate upper and lower surface and side arrange it is anti-
Penetrate piece 2 to be totally reflected back and forth, do not transmit light guide plate from upper and lower surface or side, to the last encounter scattering netted dot 6 and become scattered
Penetrate light or reach till terminal surface transmits away.
Technological means disclosed in the present invention program are not limited only to the technological means disclosed in above-mentioned embodiment, also include
The technical scheme being made up of above technical characteristic combination in any.It should be pointed out that for those skilled in the art
For, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications are also considered as
Protection scope of the present invention.
Claims (6)
1. a kind of Novel backlight light guide plate, it is characterised in that：Including rectangular optical PMMA substrate, it is arranged on optics PMMA substrates
Non- incident plain edge on reflector plate and be arranged on the optics reflecting film of optics PMMA base plate bottoms, the optics PMMA substrates
Upper surface protrusion be provided with some be arranged in parallel semi-cylindrical leaded light micro structures, in the lower surface of the optics PMMA substrates
The hemispherical scattering netted dot of some rows is arranged with, positioned at all scattering netted dots of same a line a microlens array is constituted, described half
Cylindric guide-lighting micro structure and hemispherical scattering netted dot are the upper and lower table that molding ejection formation is arranged on optics PMMA substrates
Face, the reflector plate and optics reflecting film pass through UV-light solidified pressure-sensitive together with optics PMMA substrate stickings, institute
The incident plain edge for stating optics PMMA substrates offers LED light source mounting groove, width and length and the optics PMMA of all reflector plates
The side width of substrate and length are consistent, all microlens arrays and the orthogonal thereto pass of all semi-cylindricals leaded light micro structure
System's arrangement.
2. a kind of Novel backlight light guide plate as claimed in claim 1, it is characterised in that positioned at same microlens array
The radius of all hemispherical scattering netted dots is in ascending structure distribution according to the distance of the incident plain edge of distance, positioned at same
The arrangement density of all hemispherical scattering netted dot of microlens array is in ascending distribution according to the distance of the incident plain edge of distance.
3. a kind of Novel backlight light guide plate as claimed in claim 2, it is characterised in that positioned at same microlens array
, to be spacedly distributed, the interval of two neighboring microlens array is with more and more remote with the distance of incident plain edge for all scattering netted dots
And become increasingly nearer, and the size positioned at all scattering netted dots of same microlens array is consistent.
4. a kind of as claimed in claim 2 or claim 3 Novel backlight light guide plate, it is characterised in that two adjacent semi-cylindricals
It is closely coupled between guide-lighting micro structure.
5. a kind of Novel backlight light guide plate as claimed in claim 4, it is characterised in that the thickness of the optics PMMA substrates
For 0.5-5mm, the optics reflecting film adopts thickness for the PET reflection film of 0.1-0.35mm.
6. a kind of Novel backlight light guide plate as claimed in claim 5, it is characterised in that the reflection of the optics reflecting film
Face is in rough shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611267345.9A CN106597598A (en) | 2016-12-31 | 2016-12-31 | Novel backlight source light guide plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611267345.9A CN106597598A (en) | 2016-12-31 | 2016-12-31 | Novel backlight source light guide plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106597598A true CN106597598A (en) | 2017-04-26 |
Family
ID=58582107
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611267345.9A Pending CN106597598A (en) | 2016-12-31 | 2016-12-31 | Novel backlight source light guide plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106597598A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107330400A (en) * | 2017-06-29 | 2017-11-07 | 京东方科技集团股份有限公司 | A kind of vein device for identifying |
| CN107390433A (en) * | 2017-09-20 | 2017-11-24 | 南京第五十五所技术开发有限公司 | Modularization line laser quantum dot backlight module device and display device |
| CN108152878A (en) * | 2017-12-28 | 2018-06-12 | 重庆市中光电显示技术有限公司 | Side backlight type backlight module |
| CN108627908A (en) * | 2018-05-11 | 2018-10-09 | 厦门光莆电子股份有限公司 | Modular light conducting plate |
| CN108761915A (en) * | 2018-06-06 | 2018-11-06 | 江苏聚泰科技有限公司 | A kind of LCM backlights |
| CN109633805A (en) * | 2018-12-05 | 2019-04-16 | 广州美术学院 | A kind of light conducting plate structure with curved surface |
| TWI667499B (en) * | 2018-02-02 | 2019-08-01 | 寶力精密科技股份有限公司 | Light guide plate with micro lens and light emitting apparatus |
| CN110531459A (en) * | 2018-05-25 | 2019-12-03 | 苏州苏大维格光电科技股份有限公司 | Backlight and display device comprising it |
| CN112147736A (en) * | 2020-10-22 | 2020-12-29 | 中航华东光电有限公司 | Novel optical film group |
| CN112558214A (en) * | 2020-12-09 | 2021-03-26 | Tcl通讯（宁波）有限公司 | Light guide plate structure, display device and electronic equipment |
-
2016
- 2016-12-31 CN CN201611267345.9A patent/CN106597598A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107330400A (en) * | 2017-06-29 | 2017-11-07 | 京东方科技集团股份有限公司 | A kind of vein device for identifying |
| CN107330400B (en) * | 2017-06-29 | 2020-05-19 | 京东方科技集团股份有限公司 | Vein identification device |
| CN107390433A (en) * | 2017-09-20 | 2017-11-24 | 南京第五十五所技术开发有限公司 | Modularization line laser quantum dot backlight module device and display device |
| CN108152878A (en) * | 2017-12-28 | 2018-06-12 | 重庆市中光电显示技术有限公司 | Side backlight type backlight module |
| TWI667499B (en) * | 2018-02-02 | 2019-08-01 | 寶力精密科技股份有限公司 | Light guide plate with micro lens and light emitting apparatus |
| CN108627908A (en) * | 2018-05-11 | 2018-10-09 | 厦门光莆电子股份有限公司 | Modular light conducting plate |
| CN110531459A (en) * | 2018-05-25 | 2019-12-03 | 苏州苏大维格光电科技股份有限公司 | Backlight and display device comprising it |
| CN108761915A (en) * | 2018-06-06 | 2018-11-06 | 江苏聚泰科技有限公司 | A kind of LCM backlights |
| CN109633805A (en) * | 2018-12-05 | 2019-04-16 | 广州美术学院 | A kind of light conducting plate structure with curved surface |
| CN109633805B (en) * | 2018-12-05 | 2023-11-07 | 广州美术学院 | Light guide plate structure with curved surface |
| CN112147736A (en) * | 2020-10-22 | 2020-12-29 | 中航华东光电有限公司 | Novel optical film group |
| CN112558214A (en) * | 2020-12-09 | 2021-03-26 | Tcl通讯（宁波）有限公司 | Light guide plate structure, display device and electronic equipment |
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Application publication date: 20170426 |