CN200959037Y - Diffuse Concentrator - Google Patents
Diffuse Concentrator Download PDFInfo
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- CN200959037Y CN200959037Y CN 200620122234 CN200620122234U CN200959037Y CN 200959037 Y CN200959037 Y CN 200959037Y CN 200620122234 CN200620122234 CN 200620122234 CN 200620122234 U CN200620122234 U CN 200620122234U CN 200959037 Y CN200959037 Y CN 200959037Y
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- light
- plane
- concentration piece
- focusing unit
- transparent substrate
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Abstract
一种扩散聚光片，具有一透明基片、多个排列设置于透明基片的一表面上的聚光单元以及一设置于透明基片的该表面的相对表面上的光扩散层，各聚光单元具有至少一斜面及一曲面，该聚光单元是设计为使得光线于曲面产生折射后，于斜面产生反射，或于斜面产生反射后，于曲面产生折射，藉此改善视角变化时造成亮度不均的情形，并改善特定角度产生的漏光情形。
A diffuse light-gathering sheet comprises a transparent substrate, a plurality of light-gathering units arranged on a surface of the transparent substrate, and a light-diffusing layer arranged on a surface opposite to the surface of the transparent substrate. Each light-gathering unit has at least one inclined surface and one curved surface. The light-gathering unit is designed so that light is reflected on the inclined surface after being refracted on the curved surface, or is refracted on the curved surface after being reflected on the inclined surface, thereby improving the uneven brightness caused by changes in viewing angle and improving the light leakage caused by specific angles.
Description
[technical field]
The utility model is relevant for concentration piece, especially relevant for the diffusing lens of the visible angle and the optically focused Luminance Distribution of the may command optically focused that is used for module backlight.
[background technology]
One known concentration piece such as Figure 1A, shown in the 1B, it has been exposed in United States Patent (USP) the 5th, 626, No. 800 " PREVENTION OF GROOVE TIP DEFORMATION INBRIGHTNESS ENHANCEMENT FILM " in, Figure 1A, 1B shows that concentration piece 1 comprises substrate 11 and several prism cylinders 12, prism cylinder 12 is arranged on the surface of substrate 11, prism cylinder 12 has first plane (facet) 12a and the second plane 12b, the cause first plane 12a and the second plane 12b are the plane, non-curved surface characteristic, so one dimension optically focused effect is only arranged, and do not have two-dimentional light gathering, and its optically focused principle is a utilization prism columns internal refraction, in optically focused brightness, have peak value in special angle and occur, can produce invalid high angle light leak (i.e. the light of excessively assembling in high angle) on the optical application and cause the brightness disproportionation situation during in visual angle change.
Another known concentration piece please refer to Fig. 2 A, shown in the 2B, it has been exposed in United States Patent (USP) the 6th, 277, in No. 471 " BRIGHTNESS ENHANCEMENT FILM " (corresponding to TaiWan, China patent announcement No. 533987 " Wave surface light focusing sheet "), Fig. 2 A, 2B shows that Wave surface light focusing sheet 2 comprises substrate 21 and corrugated slice layer 22, corrugated slice layer 22 is arranged with several corrugated microgrooves 221, corrugated microgroove 221 is to be rearranged by 222 of several light focusing unit (brightnessunit), each light focusing unit 222 has the first surface 223 and second curved surface 224, first surface 223 and 224 low dips of second curved surface are to the upper surface of corrugated microgroove layer 22, and in formation sideline 225, the bottom of the first surface 223 and second curved surface 224, sideline 225 and is connected into a trough mutually between two light focusing unit 222 of adjacency.Because the bootable light of surface curvature of the first surface 223 and second curved surface 224 reflects, and makes it have the light-focusing function of two-dimensional directional.But be same as Figure 1A, its optically focused principle is a utilization prism columns internal refraction, has peak value in special angle in optically focused brightness and occurs, and also can produce invalid high angle light leak on the optical application and cause the brightness disproportionation situation during in visual angle change.
In known module backlight, the module backlight of side-light type as shown in Figure 3, the white light that cold-cathode tube 31 sends is to import light guide plate (LGP) 33 via reflection lampshade 32, again by the reflection printing net-point 34 and the white reflector plate 35 of lower surface, with the light vertical direction that leads, then via after diffusion sheet 36 is spread light down, form a uniform face light, enter concentration piece 37 again and carry out optically focused, and by last diffusion sheet 38 too the light of sharpening spread again, in order to form the face light emitting source of a front optically focused blast.In this known module backlight, must use other diffusion sheet and concentration piece.
In another known module backlight, side-light type reversed prism module backlight as shown in Figure 4, the white light that cold-cathode tube 31 sends is to import light guide plate 41 via reflection lampshade 32, reversed prism structure 42 and direct reflection sheet 43 by the bottom, with the light vertical direction that leads, then carry out the optically focused diffusion, by last diffusion sheet 38 light is spread optimization more again via the contrary rhombus lens vertical 44 with reversed prism structure 42 axial directions.Therefore also must use other diffusion sheet and inverse edge eyeglass.
Above-mentioned known concentration piece is all only had a light-focusing function, fail to possess simultaneously diffusion function, so in known design of backlight module, all need use down under the concentration piece with diffusion sheet and carry out optically focused importing concentration piece again after the light diffusion, and in known reversed prism back light module unit structure, though the inverse edge eyeglass can spread light, but still need diffusion sheet with surperficial light optimization.Therefore for the gain of positive briliancy, also can't only use diffusion sheet or concentration piece (inverse edge eyeglass) separately, so in practical application, no matter the cost of manufacturing cost or time resource is all quite considerable.
[utility model content]
A purpose of the present utility model provides a kind of concentration piece, the visible angle of may command optically focused, and cause the situation of brightness disproportionation can improve visual angle change the time.
Second purpose of the present utility model provides a kind of concentration piece, can improve the light leak situation that special angle produces, and makes light gathering efficiency promote.
The 3rd purpose of the present utility model provides a kind of concentration piece, can eliminate interference fringe (Moir é) phenomenon of optics, makes the optics image quality to promote.
The 4th purpose of the present utility model provides a kind of concentration piece, can produce the effect of two-dimentional optically focused.
The 5th purpose of the present utility model provides a kind of diffusing lens, and diffusion sheet and concentration piece are integrated into one, can replace the prism concentration piece and the diffusion sheet of simple function, makes the utilization energy more convenient, can reduce significantly whole cost and man-hour.
The 6th purpose of the present utility model is for a diffusing lens being provided, can changing the incident direction of light, and the inverse edge eyeglass uses as an alternative, and integrates diffusion function, makes the inverse edge eyeglass and the diffusion sheet of its alternative simple function.
Comprise according to a kind of concentration piece of the present utility model: a transparent substrate has first surface and reaches and the first surface opposing second surface; And a plurality of light focusing unit, be located on the transparent substrate first surface, each light focusing unit comprises the 3rd surface and the 4th surface, the first surface that the 3rd surface comprises first inclined-plane and joins with first inclined-plane, first inclined-plane and first surface form first intersection in this joint, first inclined-plane and the 4th surface join and form a crest line, first surface and transparent substrate first surface join and form first sideline, the 4th surface joins with the transparent substrate first surface and forms second sideline, wherein this light focusing unit is to be designed to make light after first surface produces refraction, produce reflection in first inclined-plane, or after the generation reflection of first inclined-plane, produce refraction in first surface.
In aforesaid concentration piece, second curved surface that the 4th surface comprises second inclined-plane and joins with second inclined-plane, second inclined-plane and second curved surface form second intersection in this joint, second inclined-plane and the 3rd surface join and form this crest line, second curved surface and transparent substrate first surface join and form this second sideline, and wherein this light focusing unit is to be designed to make light after second curved surface produces refraction, produces reflection in second inclined-plane, or after the generation reflection of second inclined-plane, produce refraction in second curved surface.
According to another diffusing lens of the present utility model, have aforesaid concentration piece structure, and have the light diffusion layer of being located at the transparent substrate second surface.
In sum, diffusing lens of the present utility model, its beneficial effect is: can be in the brightness of specific field of view angle compensation optically focused, make the field-of-view angle of optically focused broader, brightness is more even, and the spotlight effect of bootable light generation two dimension refraction, significantly promotes the light gathering efficiency of concentration piece, the invalid high angle light leak of script can be recycled, and then promote the light gathering efficiency of whole concentration piece.
[description of drawings]
Figure 1A is the schematic isometric of a known concentration piece.Figure 1B is the partial enlarged drawing of Figure 1A.
Fig. 2 A is the schematic isometric of another known concentration piece.Fig. 2 B is the partial enlarged drawing of Fig. 2 A.
Fig. 3 is the constructed profile of known side-light type module backlight.
Fig. 4 is the constructed profile of another known side-light type reversed prism module backlight.
Fig. 5 A is the schematic isometric and the fragmentary cross-sectional view of the concentration piece of the utility model first preferred embodiment.Fig. 5 B is the partial enlarged drawing of Fig. 5 A.
Fig. 6 is the schematic isometric and the fragmentary cross-sectional view of the concentration piece of the utility model second preferred embodiment.
Fig. 7 is the schematic isometric of the concentration piece of the utility model the 3rd preferred embodiment.
Fig. 8 is the schematic isometric of the concentration piece of the utility model the 4th preferred embodiment.
Fig. 9 is the schematic isometric of the concentration piece of the utility model the 5th preferred embodiment.
Figure 10 is the signal fragmentary cross-sectional view of the concentration piece of the utility model the 6th preferred embodiment.
Figure 11 is the signal fragmentary cross-sectional view of the concentration piece of the utility model the 7th preferred embodiment.
Figure 12 is the schematic isometric of the diffusing lens of the utility model preferred embodiment.
Figure 13 is that what to test gained through reality according to two example products of the present utility model and known product is the briliancy curve map of function with vertical (V) visual angle.
[embodiment]
In order to allow above-mentioned purpose of the present utility model, functional character and advantage understand by clearer and more definite quilt, hereinafter with the utility model with preferable example, and cooperate appended graphicly, be described in detail below.
Please refer to shown in Fig. 5 A, the 5B, the concentration piece 5 of the utility model first preferred embodiment has substrate 51 and a plurality of light focusing unit 52.Substrate 51 has upper surface 51a and lower surface 51b, can for light wear penetrate by.Light focusing unit 52 is to belong to microstructure (MicroStructure), and its adjacent mutual connection is arranged on the upper surface 51a (or lower surface 51b) of substrate 51.Each light focusing unit 52 is provided with inclined-plane 52a and inclined-plane 52b, and curved surface 52c that is connected with inclined-plane 52a and inclined-plane 52b respectively and curved surface 52d, and inclined-plane 52a and curved surface 52c form a side surface, and inclined-plane 52b and curved surface 52d form the opposite side surface.Inclined-plane 52a and inclined-plane 52b up extend the formation crest line 53 that joins, inclined-plane 52a down extends to join with curved surface 52c and forms intersection 54, inclined-plane 52b down extends to join with curved surface 52d and forms intersection 55, and curved surface 52c and curved surface 52d extend downward upper surface 51a respectively and form sideline 56 and 57.
In this embodiment, each light focusing unit 52 has equal height H, and promptly the vertical range to substrate 51 upper surface 51a is identical from crest line 53, and has identical width W, promptly from the sideline 56 to the sideline 57 horizontal range is identical, wherein crest line 53, intersection 54 and 55, sideline 56 and 57 are all straight line.The surface curvature R of the angle of inclination of inclined-plane 52a and inclined-plane 52b and curved surface 52c and curved surface 52d is through suitable design, make when light enters light focusing unit 52 by the appropriate location of substrate 51, can be after curved surface 52c and the generation refraction of curved surface 52d place, produce reflection in inclined-plane 52a and inclined-plane 52b place again, thereby can be in the brightness of specific field of view angle compensation optically focused, make the field-of-view angle of optically focused broader, brightness is more even.
Fig. 6 shows the concentration piece of the utility model second preferred embodiment, the main difference of first preferred embodiment is that its crest line 53 is the curve of vertical oscillation shown in itself and Fig. 5 A, and each light focusing unit 52 height H has identical variation, for example the height in the A section part is H1, and be H2 in the height of B section part, both differences in height are D, this variation makes inclined-plane 52a and inclined-plane 52b produce curved transition, the bootable light of this curved transition produces the spotlight effect of two dimension refraction, so Fig. 6 second preferred embodiment can be in the advantage of specific field of view angle compensation optically focused brightness except that what possess Fig. 5 A first preferred embodiment, and bootable light produces the spotlight effect of two dimension refraction, significantly promotes the light gathering efficiency of concentration piece.
Fig. 7 is the concentration piece of the utility model the 3rd preferred embodiment, the main difference of first preferred embodiment is that its intersection 54 and 55 is the curve of horizontal hunting shown in itself and Fig. 5 A, therefore the width W p between intersection 54 and 55 can change in each light focusing unit 52, for example the width in the A section part is Wp1, width in the B section part is Wp2, this variation makes inclined-plane 52a and inclined-plane 52b produce curved transition, the bootable light of this curvature produces the spotlight effect of two dimension refraction, so Fig. 7 the 3rd preferred embodiment has as Fig. 6 second preferred embodiment can be in the advantage of specific field of view angle compensation optically focused brightness, and bootable light produces the spotlight effect of two dimension refraction, also can significantly promote the light gathering efficiency of concentration piece.
Figure 8 shows that the concentration piece of the utility model the 4th preferred embodiment, the main difference of itself and second preferred embodiment shown in Figure 6 is that its adjacent light focusing unit 52 presents certain height difference D with interlace mode and changes, for example the height in A section part two adjacent light focusing unit is respectively H1 and H2, both differences in height are D, the high angle light leak guiding that this variation can make lower light focusing unit 52 be produced enters adjacent higher light focusing unit 52 and reflects, the invalid high angle light leak of script can be recycled, and then promote the light gathering efficiency of whole concentration piece.
Fig. 9 discloses the concentration piece of the utility model the 5th preferred embodiment, the main difference of itself and Fig. 8 the 4th preferred embodiment is that its adjacent light focusing unit 52 produces the variation of difference in height D each other at random, for example the difference in height in the A section part leftmost side two adjacent light focusing unit is D, leftmost side light focusing unit also is D in the difference in height of A section part and B section part in addition, and Fig. 9 also has intersection shown in Figure 7 54 and 55 and is the design of horizontal hunting curve, the high angle light leak guiding that these variations can make lower light focusing unit 52 be produced enters adjacent higher light focusing unit 52 and reflects, the invalid high angle light leak of script can be recycled, and prevent the generation of interference fringe (Moir é) phenomenon, and then promote the light gathering efficiency of whole concentration piece.
Concentration piece of the present utility model shown in the aforementioned preferred embodiment can utilize following manner to form:
1. scribe mode with computer Numerical Control (CNC) lathe, chemical etching or laser and make a mould, this mould has a microstructure, and this microstructure is to impress optical microstructures of the present utility model;
2. on polyethylene terephthalate (PET) or polymethylmethacrylate (PMMA) film, be coated with a transparent polymer that can ultraviolet ray (UV) solidifies in running roller transmission (Roll-To-Roll) mode, press through mould again and roll over, and form still uncured microstructure of the present utility model;
3. irradiation UV light makes transparent polymeric deposits yields polymerization curing reaction, and forms concentration piece of the present utility model.
Perhaps can utilize integrally formed mode to form concentration piece of the present utility model shown in the aforementioned preferred embodiment.Figure 12 shows the structure of the diffusing lens 120 of the utility model preferred embodiment, it has transparent substrate 1201, a plurality of light focusing unit 1202 and light diffusion layer 1203, wherein transparent substrate 1201 and a plurality of light focusing unit 1202 can be implemented according to earlier figures 5 to Figure 11 preferred embodiments, this light diffusion layer 1203 then for example coating method be formed on the transparent substrate 1201, light diffusion layer 1203 has the function with light diffusion.After light is injected by light diffusion layer 1203, form the area source of an even scattering via the diffusion of light diffusion layer 1203, enter light focusing unit 1202 again and carry out optically focused, perhaps after light is entered by light focusing unit 1202, optically focused via light focusing unit 1202, therefore form the area source of an even scattering again via the diffusion of light diffusion layer 1203, can put in order and adjust and reach the effect that positive briliancy promotes the optically focused angle.
The rerum natura comparison sheet that following table 1 shows according to example product of the present utility model and known product, wherein example A is the diffusing lens structure with diffusion layer according to Figure 12 preferred embodiment, example B is the concentration piece structure of not having a diffusion layer according to Fig. 5 preferred embodiment, other cooperates known single diffusion sheet, BEF-II then cooperates the structure of known single diffusion sheet for the known concentration piece according to figure l, each product mainly is made of the PET/PMMA material.
Table 1
| The name of an article (Type) | Example A | Example B | BEF-II | |
| Drift angle angle (Angle) | 87~93 | 90~95 | 90 | |
| Spacing (Pitch) | 50um | 50um | 50um | |
| Thickness (Thickness) | 155um | 110um | ||
| Diffusion layer (D.S Layer) | 40~50um | Do not have | Do not have | |
| Material (Materials) | PET/PMMA | |||
| Hardness (Hardness) | HB | |||
| Briliancy escalating rate (Gain) | Individual | 1.79 | 1.71 | 1.69 |
| Vertical (V) angle of visibility (View Angle) of 50% briliancy | 33 | 28 | 25 | |
| The level of 50% briliancy (H) angle of visibility (View Angle) | 53 | 53 | 43 | |
| Gauge point/instrument | Diaphragm central point/BM7 | |||
As seen from Table 1, present higher briliancy escalating rate according to example A of the present utility model, example B, and have vertical (V) and level (H) angle of visibility of 50% bigger briliancy.
Figure 13 show before-mentioned products through reality test gained be the briliancy curve map of function with vertical (V) visual angle, by figure as can be known:
1. 30 degree promptly significantly glide known its briliancy of BEF-II product in the visual angle, and about 40 degree high angle light leak problem are arranged, so the briliancy curve has the projection phenomenon in this angle.
2. example A itself has a diffusion layer, the utilization of alternative traditional diffusion sheet, and the known concentration piece of each angle luminance ratio cooperates the BEF-II product of known single diffusion sheet to exceed nearly 10%.
3. example B is the structure that cooperates single diffusion layer, and the briliancy performance of its positive 0 degree is little with known BEF-II product differentiation, but then obviously comparatively level and smooth in the briliancy decline degree of 30 degree ~ 40 degree, has improved the high angle light leak disappearance of known BEF-II product.
Though the utility model has utilized above-mentioned preferable example to disclose in detail, so it is not in order to limiting the utility model, allly has the knack of this operator, in not breaking away from spirit and scope of the present utility model, can carry out various changes and modification.
[main element symbol description]
1 concentration piece
11 substrates
12 prism cylinders
12a the first plane
12b the second plane
2 Wave surface light focusing sheets
21 substrates
22 corrugated slice layers
221 corrugated microgrooves
222 light focusing unit
223 first surfaces
224 second curved surfaces
225 sidelines
31 cold-cathode tubes
32 reflection lampshades
33 light guide plate
34 reflection printing net-points
35 reflector plates
36 times diffusion sheets
37 concentration pieces
Diffusion sheet on 38
41 light guide plate
42 reversed prism structures
43 direct reflection sheets
44 contrary rhombus lens
5 concentration pieces
51 substrates
The 51a upper surface
The 51b lower surface
52 light focusing unit
The 52a inclined-plane
The 52b inclined-plane
The 52c curved surface
The 52d curved surface
53 crest lines
54 intersections
55 intersections
56 sidelines
57 sidelines
1001 substrates
1002 inclined-planes
1003 curved surfaces
1004 planes
1101 inclined-planes
1102 curved surfaces
1103 inclined-planes
The height of H light focusing unit
The width of W light focusing unit
The surface curvature of R curved surface
Claims (11)
1. concentration piece is characterized in that: comprising:
One transparent substrate has first surface and reaches and the first surface opposing second surface; And
A plurality of light focusing unit, be located on this transparent substrate first surface, each light focusing unit comprises the 3rd surface and the 4th surface, the first surface that the 3rd surface comprises first inclined-plane and joins with first inclined-plane, this first inclined-plane and first surface form first intersection in this joint, and this first inclined-plane and the 4th surface join and form a crest line, and this first surface of this first surface and transparent substrate joins and forms first sideline, the 4th surface joins with this first surface of transparent substrate and forms second sideline
Wherein this light focusing unit is to be designed to make light after first surface produces refraction, produces reflection in first inclined-plane, or after the generation reflection of first inclined-plane, produces refraction in first surface.
2. concentration piece as claimed in claim 1 is characterized in that: the 4th surface is a plane perpendicular to the transparent substrate first surface.
3. concentration piece as claimed in claim 1, it is characterized in that: second curved surface that the 4th surface comprises second inclined-plane and joins with second inclined-plane, second inclined-plane and second curved surface form second intersection in this joint, this second inclined-plane and the 3rd surface join and form this crest line, second curved surface and transparent substrate first surface join and form this second sideline, wherein this light focusing unit is to be designed to make light after second curved surface produces refraction, produce reflection in second inclined-plane, or after the generation reflection of second inclined-plane, produce refraction in second curved surface.
4. concentration piece as claimed in claim 1 is characterized in that: this crest line is straight line or curve.
5. concentration piece as claimed in claim 1 is characterized in that: this first intersection is straight line or curve.
6. concentration piece as claimed in claim 1 is characterized in that: this first sideline is straight line or curve.
7. concentration piece as claimed in claim 1 is characterized in that: this second sideline is straight line or curve.
8. concentration piece as claimed in claim 3 is characterized in that: this second intersection is straight line or curve.
9. concentration piece as claimed in claim 1 is characterized in that: the height of this crest line distance transparent substrate first surface is fixing or variable.
10. concentration piece as claimed in claim 9 is characterized in that: when the height of two adjacent light focusing unit not simultaneously, part light reflects or reflects in the higher light focusing unit of adjacent height again after highly lower light focusing unit reflects or reflects.
11. a diffusing lens has as each concentration piece structure in the claim 1 to 10, it is characterized in that: and have the light diffusion layer of being located at the transparent substrate second surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620122234 CN200959037Y (en) | 2006-07-05 | 2006-07-05 | Diffuse Concentrator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620122234 CN200959037Y (en) | 2006-07-05 | 2006-07-05 | Diffuse Concentrator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200959037Y true CN200959037Y (en) | 2007-10-10 |
Family
ID=38785918
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620122234 Expired - Fee Related CN200959037Y (en) | 2006-07-05 | 2006-07-05 | Diffuse Concentrator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200959037Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104614864A (en) * | 2015-02-15 | 2015-05-13 | 张家港康得新光电材料有限公司 | Three-dimensional display device |
| WO2021012702A1 (en) * | 2019-07-23 | 2021-01-28 | Shenzhen GOODIX Technology Co., Ltd. | Asymmetric brightness enhancement films for liquid crystal display assemblies |
| WO2022000689A1 (en) * | 2020-07-02 | 2022-01-06 | Tcl华星光电技术有限公司 | Viewing angle diffusion film and display panel |
-
2006
- 2006-07-05 CN CN 200620122234 patent/CN200959037Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104614864A (en) * | 2015-02-15 | 2015-05-13 | 张家港康得新光电材料有限公司 | Three-dimensional display device |
| WO2021012702A1 (en) * | 2019-07-23 | 2021-01-28 | Shenzhen GOODIX Technology Co., Ltd. | Asymmetric brightness enhancement films for liquid crystal display assemblies |
| WO2022000689A1 (en) * | 2020-07-02 | 2022-01-06 | Tcl华星光电技术有限公司 | Viewing angle diffusion film and display panel |
| US11886068B2 (en) | 2020-07-02 | 2024-01-30 | Tcl China Star Optoelectronics Technology Co., Ltd. | Viewing angle diffusion film and display panel |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20071010 Termination date: 20120705 |