CN101738672B - Light guide plate - Google Patents
Light guide plate Download PDFInfo
- Publication number
- CN101738672B CN101738672B CN200810176748A CN200810176748A CN101738672B CN 101738672 B CN101738672 B CN 101738672B CN 200810176748 A CN200810176748 A CN 200810176748A CN 200810176748 A CN200810176748 A CN 200810176748A CN 101738672 B CN101738672 B CN 101738672B
- Authority
- CN
- China
- Prior art keywords
- those
- lgp
- geometric
- light element
- geometric schemes
- 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.)
- Expired - Fee Related
Links
Images
Abstract
The invention discloses a light guide plate provided with a light-emitting surface and a bottom surface which are opposite to each other, and a light incident surface and a lateral surface which are opposite to each other. The light incident surface and the lateral surface are connected between the light-emitting surface and the bottom. A plurality of light guide units are arranged at the bottom of the light guide plate; each light guide unit extends along a first direction, wherein the first direction points to the lateral surface from the light incident surface. Each light guide unit comprises a plurality of geometric patterns and a plurality of strip patterns for connecting the geometric patterns in series; and the geometric patterns and the strip patterns are internally provided with a plurality of microstructures. The width of the geometric patterns in the second direction vertical to the first direction is larger than the width of the strip patterns in a second direction. The light guide plate can improve the uniformity of a surface light source emitting from the light-emitting surface of the light guide plate.
Description
Technical field
The present invention is about a kind of optical sheet, and especially in regard to a kind of LGP.
Background technology
Fig. 1 is the synoptic diagram of existing a kind of LGP.Please with reference to Fig. 1, the U.S. the 6th, 612, No. 722 patent discloses a kind of LGP 2, and it is provided with several microstructure units (cell) 21, and each microstructure unit 21 comprises several microstructures (micro cell) 211.In addition, more near the microstructure unit 21 in lamp source 19, its size is littler.
Hold above-mentionedly, behind the light beam incident LGP 2 that provides when lamp source 19, light beam can be by microstructure unit 21 reflections, and from the exiting surface outgoing of LGP 2.Prior art is that the density by control microstructure unit 21 improves from the homogeneity of the area source of the exiting surface outgoing of LGP 2.
Yet because microstructure unit 21 domestic demands are provided with several microstructures 211, so the size of microstructure unit 21 can not be too little, this will cause human eye to discover the existence of microstructure unit 21 easily.
Summary of the invention
The present invention provides a kind of LGP, in order to promote the quality of area source.
Other purposes of the present invention and advantage can further be understood from the disclosed technical characterictic of the present invention.
For reaching one of above-mentioned or partly or entirely purpose or other purposes; One embodiment of the invention propose a kind of LGP; It has a relative exiting surface and a bottom surface and a relative incidence surface and a side, and incidence surface and side are to be connected between exiting surface and the bottom surface.The bottom surface of LGP is provided with several light elements, and each light element is to extend along a first direction, and wherein first direction is from the incidence surface points sideways.Several strip patterns that each light element comprises several geometric schemes and is connected in series these geometric schemes, and be provided with several microstructures in geometric scheme and the strip pattern.The width of geometric scheme on the second direction of a vertical first direction is greater than the width of strip pattern on second direction.
In the LGP of the embodiment of the invention; Because each light element comprises several strip patterns of several geometric schemes and serial connection geometric scheme; And be provided with several microstructures in geometric scheme and the strip pattern, so can improve from the homogeneity of the area source of exiting surface outgoing.In addition, being connected in series geometric scheme by strip pattern can avoid light element by human eye.
For let above-mentioned and other purposes of the present invention, feature and advantage can be more obviously understandable, hereinafter is special lifts preferred embodiment, and cooperates institute's accompanying drawing, specifies as follows.
Description of drawings
Fig. 1 is the synoptic diagram of existing a kind of LGP.
Fig. 2 is the elevational schematic view of a kind of LGP of one embodiment of the invention.
Fig. 3 is the schematic perspective view of a kind of LGP of another embodiment of the present invention.
Fig. 4 is the schematic perspective view of a kind of LGP of another embodiment of the present invention.
Fig. 5 is the schematic side view of a kind of LGP of another embodiment of the present invention.
Fig. 6 is the schematic side view of a kind of LGP of another embodiment of the present invention.
Fig. 7 is the synoptic diagram of the bang path of light beam in the LGP of Fig. 5.
Fig. 8 is the elevational schematic view of a kind of LGP of another embodiment of the present invention.
Fig. 9 is the elevational schematic view of a kind of LGP of another embodiment of the present invention.
Figure 10 is the elevational schematic view of a kind of LGP of another embodiment of the present invention.
Figure 11 is the elevational schematic view of a kind of LGP of another embodiment of the present invention.
Figure 12 is the elevational schematic view of a kind of LGP of another embodiment of the present invention.
Figure 13 is the elevational schematic view of a kind of LGP of another embodiment of the present invention.
Embodiment
About aforementioned and other technology contents, characteristics and effect of the present invention, in the detailed description of a preferred embodiment of following cooperation reference diagram, can clearly appear.The direction term of being mentioned in following examples, for example: upper and lower, left and right, front or rear etc. only are the directions with reference to accompanying drawing.Therefore, the direction term of use is to be used for explaining not to be to be used for limiting the present invention.
Fig. 2 is the elevational schematic view of a kind of LGP of one embodiment of the invention.Please with reference to Fig. 2, the LGP 100 of present embodiment has a relative exiting surface (not shown) and a bottom surface 114 and a relative incidence surface 116 and a side 118, and incidence surface 116 and side 118 are to be connected between exiting surface and the bottom surface 114.This side 118 also can be another incidence surface.The bottom surface 114 of LGP 100 is provided with several light elements 120, and each light element 120 is to extend along a first direction A, and wherein first direction A is from incidence surface 116 points sideways 118.Several strip patterns 124 that each light element 120 comprises several geometric schemes 122 and is connected in series these geometric schemes 122, and be provided with several microstructures 126 in geometric scheme 122 and the strip pattern 124.In addition, the width of geometric scheme 122 on the second direction B of a vertical first direction A is greater than the width of strip pattern 124 on second direction B.
Above-mentioned first direction A for example is a normal vector N who is parallel to incidence surface 116.The profile of geometric scheme 122 for example is circular, but it also can be ellipse or polygon (like prismatic, sexangle) etc.The size of the geometric scheme 122 of each light element 120 for example is identical.In addition, have a space D 1, D2, D3, D4, D5, D6, D7 between every adjacent two geometric schemes 122 of each light element 120, these space D 1 of each light element 120, D2, D3, D4, D5, D6, D7 can be different.Particularly, these space D 1, D2, D3, D4, D5, D6, the D7 of each light element 120 reduce along first direction A gradually.In other words, D1>D2>D3>D4>D5>D6>D7.
Above-mentioned geometric scheme 122 can be a plane pattern with strip pattern 124, and microstructure 126 can evagination in geometric scheme 122 and strip pattern 124 (as shown in Figure 3) or indent in geometric scheme 122 and strip pattern 124 (as shown in Figure 4).In addition, the microstructure 126 of each light element 120 for example is to arrange along first direction A.The microstructure 126 of each light element 120 for example is continuous arrangement, but it also can be and is spaced.In Fig. 3, microstructure 126 is that V-arrangement is protruding, but it also can be half-cylindrical convexity, hemisphere jut, pyramid convexity or above-mentioned combination.In addition, in Fig. 4, microstructure 126 for example is a vee-cut, but it also can be half-cylindrical groove, bulb-shaped recess, pyramid depression or above-mentioned combination.
Please with reference to Fig. 5, but above-mentioned geometric scheme 122 and strip pattern 124 also indent in the bottom surface 114, but and microstructure 126 indents in geometric scheme 122 and strip pattern 124.In addition, microstructure 126 for example is a vee-cut, but it also can be half-cylindrical groove, bulb-shaped recess, pyramid depression or above-mentioned combination.
Please with reference to Fig. 6, but above-mentioned geometric scheme 122 and strip pattern 124 also evagination in the bottom surface 114, but and microstructure 126 evaginations in geometric scheme 122 and strip pattern 124.In addition, microstructure 126 for example is that V-arrangement is protruding, but it also can be half-cylindrical convexity, hemisphere jut, pyramid convexity or above-mentioned combination.
Fig. 7 is the synoptic diagram of the bang path of light beam in the LGP of Fig. 5.Please, can be refracted to the reflector plate 60 of LGP 100 belows from the segment beam 50 of incidence surface 116 incidents by the microstructure 126 of light element 120 with reference to Fig. 7.Afterwards, reflector plate 60 can be with light beam 50 reflected back light elements 120, and light beam 50 can so can make the beam angle of light beam 50 less from exiting surface 112 outgoing via after the refraction of microstructure 126 and the reflection, and this helps to improve brightness.In addition; Please be simultaneously with reference to Fig. 2 and Fig. 7; Because each light element 120 of LGP 100 has the strip pattern 124 in order to serial connection geometric scheme 122; So light beam 50 not only can be from part exiting surface 112 outgoing of geometric scheme 122 tops, also can be from part exiting surface 112 outgoing of strip pattern 124 tops.So, can promote the outgoing light homogeneity of light beam 50, and then avoid light element 120 to be discovered by human eye.
Though it should be noted that the profile of geometric scheme 122 of LGP 100 of Fig. 2 is all identical, as shown in Figure 8, the profile of geometric scheme 122 also can be the combination of circle, ellipse, polygon (like prismatic, sexangle).In addition, please with reference to Fig. 9, the size of the geometric scheme 122 of each light element 120 also can be different.For instance, the size of the geometric scheme 122 of each light element 120 is to increase gradually along first direction A.In addition, please with reference to Figure 10, the strip pattern 124 of each light element 120 can be expanded along first direction A gradually.
Please with reference to Figure 11, have a space D 8, D9, D10, D11 between every adjacent two geometric schemes 122 of each light element 120, these space D 8 of each light element 120, D9, D10, D11 can be identical.In addition, please with reference to Figure 12, each light element 120 is to extend along first direction A, and wherein first direction A is from incidence surface 116 points sideways 118, and can have an angle theta between the normal vector N of first direction A and incidence surface 116.
Please with reference to Figure 13, the geometric scheme 122 of the light element 120 of LGP 100 can be a random alignment, and the also visual demand of the distribution density of geometric scheme 122 and adjusting.For instance, the density of the geometric scheme 122 of the middle section of the bottom surface 114 of LGP 100 can be higher than the density of other region geometry patterns 122.Because the setting of strip pattern 124, the bee-line between most geometric scheme 122 and the adjacent light element 120 can shorten.For instance, under the situation that strip pattern 124 is not set, the geometric scheme 122 of arrow P1 indication and the bee-line of its right-hand light element 120 are the distance L 1 between the geometric scheme 122 of geometric scheme 122 and arrow P2 indication of arrow P1 indication.Under the situation that strip pattern 124 is set; The geometric scheme 122 of arrow P1 indication and the bee-line of its right-hand light element 120 are the geometric scheme 122 of arrow P1 indication and the distance L 2 between its right-hand strip pattern 124, and wherein distance L 2 is less than distance L 1.In other words, after strip pattern 124 was set, the geometric scheme 122 of arrow P1 indication shortened into L2 with the bee-line of its right-hand light element 120.Because the bee-line between geometric scheme 122 and the adjacent light element 120 can shorten; So the brightness that can make the exiting surface directly over each geometric scheme 122 is comparatively approaching with the brightness that is positioned at the exiting surface directly over the light element 120, and then promote the uniformity coefficient of LGP 100.
In sum, in embodiments of the present invention LGP has one of advantage at least:
1. because each light element comprises the strip pattern of several geometric schemes and serial connection geometric scheme; And be provided with several microstructures in geometric scheme and the strip pattern in order to reflection and deflecting light beams, so the LGP in the embodiment of the invention can improve from the homogeneity of the area source of exiting surface outgoing.
2. being connected in series geometric scheme by strip pattern can avoid light element by human eye.
3. the visual demand of the LGP in the embodiment of the invention and adjust the distribution density of geometric scheme.
Though the present invention is open as stated with preferred embodiment; Yet it is not in order to limit the present invention; Those skilled in the art under the present invention; Do not breaking away from the spirit and scope of the present invention, can do a little change and retouching, so protection scope of the present invention is being as the criterion with claims.Arbitrary embodiment of the present invention in addition or claim must not reach the disclosed whole purposes of the present invention or advantage or characteristics.In addition, summary part and title only are the usefulness that is used for assisting the patent document retrieval, are not to be used for limiting interest field of the present invention.
Main designation tabulation
2: LGP
19: the lamp source
21: microstructure unit
50: light beam
60: reflector plate
211: microstructure
100: LGP
114: the bottom surface
116: incidence surface
118: the side
120: light element
122: geometric scheme
124: strip pattern
126: microstructure
A: first direction
B: second direction
D1, D2, D3, D4, D5, D6, D7, D8, D9, D10, D11: spacing
P1, P2: arrow
N: normal vector
θ: angle
Claims (20)
1. LGP; Have a relative exiting surface and a bottom surface and a relative incidence surface and a side; This incidence surface and this side are to be connected between this exiting surface and this bottom surface; This bottom surface is provided with several light elements, and each light element is to extend along a first direction, and this first direction is to point to this side from this incidence surface; Several strip patterns that each this light element comprises several geometric schemes and is connected in series those geometric schemes; Be provided with several microstructures in those geometric schemes and those strip patterns, and this geometric scheme in the width on the second direction of vertical this first direction greater than the width of this strip pattern on this second direction, each this microstructure is to arrange along this first direction; This microstructure is to extend along this second direction, and the density of the geometric scheme of the middle section of this bottom surface of this LGP is higher than the density of other regional geometric schemes.
2. LGP as claimed in claim 1, wherein those geometric schemes and those strip patterns be indent in this bottom surface, those microstructures are that indent is in those geometric schemes and those strip patterns.
3. LGP as claimed in claim 2, wherein those microstructures comprise vee-cut, half-cylindrical groove, bulb-shaped recess, pyramid depression or above-mentioned combination.
4. LGP as claimed in claim 2, wherein those microstructures of each this light element are to arrange continuously or be spaced.
5. LGP as claimed in claim 1, wherein those geometric schemes and those strip patterns are plane patterns, and those microstructures are that indent is in those geometric schemes and those strip patterns.
6. LGP as claimed in claim 5, wherein those microstructures comprise vee-cut, half-cylindrical groove, bulb-shaped recess, pyramid depression or above-mentioned combination.
7. LGP as claimed in claim 1, wherein those geometric schemes and those strip patterns be evagination in this bottom surface, those microstructures are that evagination is in those geometric schemes and those strip patterns.
8. LGP as claimed in claim 1, wherein those geometric schemes and those strip patterns are plane patterns, those microstructures are that evagination is in those geometric schemes and those strip patterns.
9. LGP as claimed in claim 1, wherein the profile of those geometric schemes comprises circle, ellipse, polygon or above-mentioned combination.
10. LGP as claimed in claim 1, wherein this strip pattern is to expand gradually along this first direction.
11. LGP as claimed in claim 1, wherein this first direction is parallel to a normal vector of this incidence surface.
12. LGP as claimed in claim 1 wherein has an angle between the normal vector of this first direction and this incidence surface.
13. LGP as claimed in claim 1, wherein those geometric schemes of each this light element is measure-alike.
14. LGP as claimed in claim 1, wherein the size of those geometric schemes of each this light element is different.
15. LGP as claimed in claim 14, wherein the size of those geometric schemes of each this light element is to increase gradually along this first direction.
16. LGP as claimed in claim 1 wherein has a spacing between every adjacent two these geometric schemes of each this light element, those spacings of each this light element are all identical.
17. LGP as claimed in claim 1 wherein has a spacing between every adjacent two these geometric schemes of each this light element, those spacings of each this light element are different.
18. LGP as claimed in claim 17 wherein has a spacing between every adjacent two these geometric schemes of each this light element, those spacings of each this light element are to reduce gradually along this first direction.
19. LGP as claimed in claim 17, wherein those geometric schemes of those light elements are random alignment.
20. LGP as claimed in claim 1, wherein this side is another incidence surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810176748A CN101738672B (en) | 2008-11-20 | 2008-11-20 | Light guide plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810176748A CN101738672B (en) | 2008-11-20 | 2008-11-20 | Light guide plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101738672A CN101738672A (en) | 2010-06-16 |
| CN101738672B true CN101738672B (en) | 2012-09-19 |
Family
ID=42462381
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810176748A Expired - Fee Related CN101738672B (en) | 2008-11-20 | 2008-11-20 | Light guide plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101738672B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101251381B1 (en) * | 2011-12-02 | 2013-04-05 | (주)코아시스템즈 | Pattern jetting system for reforming a visibility problem of light guide plate and controlling method therefore |
| TWI461764B (en) * | 2012-01-02 | 2014-11-21 | Coretronic Corp | Light guide plate and method of fabricating the same |
| KR102422135B1 (en) * | 2017-07-07 | 2022-07-18 | 삼성디스플레이 주식회사 | Optical member, display including the same and method for fabricating the optical member |
| CN108919413A (en) * | 2018-06-29 | 2018-11-30 | 张家港康得新光电材料有限公司 | A kind of side-light type light guiding film |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6612722B2 (en) * | 2001-03-30 | 2003-09-02 | Vision High-Tech Co., Ltd. | Light guide panel for backlight |
| CN101067670A (en) * | 2007-07-09 | 2007-11-07 | 友达光电股份有限公司 | Light conducting plate with irregular micro structure and producing method thereof |
-
2008
- 2008-11-20 CN CN200810176748A patent/CN101738672B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6612722B2 (en) * | 2001-03-30 | 2003-09-02 | Vision High-Tech Co., Ltd. | Light guide panel for backlight |
| CN101067670A (en) * | 2007-07-09 | 2007-11-07 | 友达光电股份有限公司 | Light conducting plate with irregular micro structure and producing method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101738672A (en) | 2010-06-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103375741B (en) | Light guide plate and backlight module using same | |
| CN100412573C (en) | Double-sided light guide plate, area light source and display device | |
| KR100942490B1 (en) | Light guide panel for LCD back light unit and LCD back light unit thereby | |
| CN201298087Y (en) | Light guide board | |
| CN101738672B (en) | Light guide plate | |
| CN105334669A (en) | Backlight module and liquid crystal display device | |
| CN101144869A (en) | Light conductive board and the backlight module using same | |
| CN102563541A (en) | Light guide plate and backlight module | |
| US20190278016A1 (en) | Light guide plate, backlight module and display device | |
| KR100733110B1 (en) | Illumination system having edge-illuminated waveguide and separate components for extracting and directing light | |
| CN101761829B (en) | Backlight module and display device using same | |
| CN203965764U (en) | A kind of straight-down negative shows module and display device | |
| CN104614801A (en) | Lateral-entrance backlight module and lateral-entrance light guide plate | |
| CN102371431B (en) | Laser processing device | |
| JP2007123086A (en) | Surface light source apparatus | |
| CN104235758B (en) | Lens, the light-guiding shade with the lens and the lighting device using the lens | |
| CN102393545A (en) | Light guide plate, and backlight unit and liquid crystal display apparatus possessing the same | |
| CN101684919A (en) | Led street lamp lens | |
| CN100462798C (en) | Light guide board and backlight module set | |
| CN100376966C (en) | Plate for guiding light | |
| CN100376978C (en) | Back light assembly | |
| CN204740364U (en) | Optical element and lighting device | |
| CN102314008B (en) | Display device | |
| CN202118702U (en) | Backlight module | |
| CN104930462A (en) | Bending type anti-glare grille and low-light-point illuminating lamp |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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 | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20100616 Assignee: Yangxin Technology (Suzhou) Co., Ltd. Assignor: Zhongqiang Photoelectric Co., Ltd. Contract record no.: 2014990000811 Denomination of invention: Light guide plate for back light system Granted publication date: 20120919 License type: Exclusive License Record date: 20141023 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120919 Termination date: 20191120 |