CN101546040A - Prismatic lens, prism device and backlight module thereof - Google Patents
Prismatic lens, prism device and backlight module thereof Download PDFInfo
- Publication number
- CN101546040A CN101546040A CN200810084272A CN200810084272A CN101546040A CN 101546040 A CN101546040 A CN 101546040A CN 200810084272 A CN200810084272 A CN 200810084272A CN 200810084272 A CN200810084272 A CN 200810084272A CN 101546040 A CN101546040 A CN 101546040A
- Authority
- CN
- China
- Prior art keywords
- prism
- base material
- prismatic lens
- little
- angle
- 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
Links
Images
Landscapes
- Planar Illumination Modules (AREA)
Abstract
The invention relates to a prismatic lens, a prism device and a backlight module thereof, wherein the prism device comprises two prismatic lenses arranged in parallel; each prismatic lens comprises a rectangular substrate; the substrate is provided with an incident plane and an emergent plane which are opposite; and a plurality of parallel micro-prisms are arranged on the emergent plane. The corresponding micro-prisms on the two prismatic lenses are vertically arranged; the range of the included angle between the micro-prism of each prismatic lens and the long side of the substrate is between 1 and 89 degrees. The prism device and the backlight module thereof do not add components and cost and increase the range of the included angle between the micro-prism and the long side of the substrate, thereby improving the design elasticity of the system; and an even surface light source can be obtained to improve facula, interference and other problems.
Description
Technical field
The present invention relates to a kind of prismatic lens, prism apparatus and backlight module thereof, in particular for the prismatic lens in the flat-panel monitor, prism apparatus and backlight module thereof.
Background technology
As shown in Figure 1, existing flat-panel monitor 6 mainly comprises a two-d display panel 60, reaches a backlight module 61.This backlight module 61 mainly comprises a LED (light emitting diode) light source 62, a reflector plate 63, a light guide plate 64, a prism apparatus 65.The beam Propagation that led light source 62 sends is to light guide plate 64, and reflector plate 63 matches with light guide plate 64 and converts light beam to area source by pointolite, and it is luminous perpendicular to display panel 60 directions that light beam steering one direction is; Collect and mixed light beams via prism apparatus 65 again, make it in certain angle, enter display base plate 60 and transmit.
Wherein the LED-backlit source mainly contains two kinds of implementations: a kind of is directly use white light LEDs to realize being to use white backlight, another kind independently Red Green Blue LED is combined into white light.The latter can obtain the effect identical with white light LEDs, also is the mode that present industry generally adopts.
Yet, because the emission wavelength of three-color LED has nothing in common with each other, must design special light guide plate or leaded light pattern, just can make the light of three LED become white light by uniform color mixture.And, because LED belongs to pointolite, the equal property of the more difficult control light of its linear light sources compared to CCFL (cold-cathode fluorescence lamp).To being used for the LED of same backlight, the characteristic unanimity of must from a large amount of LED, choosing carefully to obtain the high as far as possible equal property of light.On the other hand, at corresponding radiator structure or the leaded light mode that various LED design, also need take into account the requirement of high efficiency light source.Revise the light guide plate design in the prior art, make the some light emitting source of LED form uniform surface light source, or before led light source, increase the blooming piece of other mixed light,, also increased cost though can reach the effect of equalizing light rays.
As shown in Figure 2, the TaiWan, China patent discloses a kind of prism apparatus 7 for M279869 number.This prism apparatus 7 comprises two prismatic lens 7a of upper and lower settings, and each prismatic lens 7a comprises a rectangle matrix 71.This matrix 71 has the smooth plane of incidence 710 and has the exit facet 712 of the V-groove 711 that is arranged in parallel.This vee-cut 711 is the 5-44.9 degree with the angular range on matrix 71 long limits, and the V-groove 711 of two prismatic lens 7a is reverse cross arrangement up and down.This prism apparatus 7 can be obtained optical effect preferably, yet the angular range that it limited is less, and system design elasticity is less.
Therefore existing prism apparatus and backlight module thereof are still needed and are further improved.
Summary of the invention
The invention provides a kind of prism apparatus and backlight module thereof, it can mix the formation uniform surface light source, and can not increase extra assembly and cost, and has sizable design flexibility.
For solving the problems of the technologies described above, the invention provides a prism apparatus, comprise two prismatic lenses that be arranged in parallel.Each prismatic lens comprises a rectangle base material, and this base material has the relative plane of incidence and exit facet, and this exit facet is provided with a plurality of little prisms arranged side by side.Corresponding little prism on described two prismatic lenses is vertical mutually to be provided with, and the angular range on little prism on each prismatic lens and the long limit of its base material is 1 ° to 89 °.
In one embodiment, the angle on the long limit of the little prism in this prism apparatus on the prismatic lens and its base material is 30 °, and the angle on the long limit of the little prism on another prismatic lens and its base material is 60 °.In one embodiment, the angle on the long limit of the little prism in this prism apparatus on the prismatic lens and its base material is 1 °, and the angle on the long limit of the little prism on another prismatic lens and its base material is 89 °.In another embodiment, the angle on the long limit of the little prism in this prism apparatus on the prismatic lens and its base material is 5 °, and the angle on the long limit of the little prism on another prismatic lens and its base material is 85 °.In another embodiment, the angle on the long limit of the little prism on two prismatic lenses and its base material is 45 ° in this prism apparatus.
The present invention also provides a backlight module that comprises this prism apparatus, and it comprises a light source, a reflector plate, a light guide plate, an and prism apparatus; This prism apparatus comprises two prismatic lenses that be arranged in parallel; Each prismatic lens comprises a rectangle base material, and this base material has the relative plane of incidence and exit facet; This exit facet is provided with a plurality of little prisms arranged side by side; Corresponding little prism on described two prismatic lenses is vertical mutually to be provided with, and the angular range on little prism on each prismatic lens and the long limit of its base material is 1 ° to 89 °.
The present invention also provides a kind of prismatic lens, comprises a rectangle base material, and this base material has the relative plane of incidence and exit facet; This exit facet is provided with a plurality of little prisms arranged side by side; It is characterized in that the angular range on the long limit of this little prism and this base material is: more than or equal to 1 ° and less than 5 °; Or greater than 44.9 ° and smaller or equal to 89 °.
Useful technique effect of the present invention is, this prism apparatus and backlight module thereof are than prior art, the angle configuration on little prism and the long limit of base material on the change prismatic lens, the led light source that effectively mixes different colours becomes more uniform white light, and have bigger scope of design, obviously improve the hot spot problem of display panel.The display device structure that is particularly useful for side emitting.
Description of drawings
Fig. 1 is the structural representation of an existing flat-panel screens;
Fig. 2 is the stereographic map of an existing prism apparatus;
Fig. 3 is the stereographic map of prism apparatus according to an embodiment of the invention;
Fig. 4 is the stereographic map of prism apparatus according to another embodiment of the present invention;
Fig. 5 is the stereographic map of prism apparatus according to yet another embodiment of the invention;
Fig. 6 is the stereographic map according to the prism apparatus of further embodiment of this invention;
Fig. 7 is the synoptic diagram of backlight module according to an embodiment of the invention, and it uses the prism apparatus among Fig. 4.
Wherein, description of reference numerals is as follows:
6 flat-panel monitors, 71 rectangle matrixes
1,3,4,5,65,7 prism apparatus, 7 11V type grooves
10,11,30,31,40,41,50,51,7a prismatic lens
2,300,400,500 base materials, 710,20 planes of incidence
712,21 exit facets, 22,32,42,52 little prisms
Φ 1, Φ 2 angles 61,300 backlight modules
62,301 light sources, 63,302 reflector plates
64,303 light guide plate, 60,310 display panels
Embodiment
For ease of better understanding the present invention, it is done detailed explanation below with reference to the preferred embodiments of the present invention.
As shown in Figure 3, prism apparatus 1 comprises two prismatic lenses that are oppositely arranged 10,11 according to an embodiment of the invention.Each prismatic lens 10,11 size dimension is identical, all comprises a rectangle transparent base 2, and this base material 2 has the relative plane of incidence 20 and exit facet 21.The material of base material 2 can be PET (polyester), the COC (cyclic olefin copolymer) of optical-grade or TAC (triallyl cyanurate) etc.These plane of incidence 20 smooth surfaces, and exit facet 21 is provided with a plurality of little prisms 22 arranged side by side.This little prism 22 is to utilize modes such as wet type coating or impression to be made, and each little prism 22 and the rectangle transparent base 2 angle Φ 1, the Φ 2 that grow limits can be arbitrarily angled between 1 °-89 °.Preferably, the angular range on little prism 22 and base material 2 long limits be more than or equal to 1 ° less than 5 ° or greater than 44.9 ° smaller or equal to 89 °.Two prismatic lenses 10,11 can be set the size of angle Φ 1, Φ 2 separately separately, however when both little prisms 22 when being orthogonal effect preferable.So enter prism apparatus 1 by the plane of incidence 20 of a prismatic lens 10 when light, via reaching the function of collecting light beam after a plurality of little triangular prisms arranged side by side 22 refractions on described two prismatic lenses 10,11.Preferable, as little prism 22 of two prismatic lenses 10,11 in the present embodiment, wherein the angle Φ 1 of Shang Fang prismatic lens 10 is 30 °, the angle Φ 2 of below prismatic lens 11 is 60 °, the effect excellence of beam dump.
As shown in Figure 4, prism apparatus 3 according to another embodiment of the present invention, little prism 32 of its top prismatic lens 30 is 1 ° with the angle on base material 300 long limits, and the angle on little prism 32 of below prismatic lens 31 and base material 300 long limits is 89 °.
As shown in Figure 5, according to the prism apparatus 4 of an embodiment more of the present invention, little prism 42 of its top prismatic lens 40 is 5 ° with the angle on base material 400 long limits, and the angle on little prism 42 of below prismatic lens 41 and base material 400 long limits is 85 °.
As shown in Figure 6, prism apparatus 5 according to still another embodiment of the invention, last little prism 52 of two prismatic lens 50,51 is 45 ° with the angle on base material 500 long limits.
As shown in Figure 7, be a backlight module 300 of prism apparatus 3 among a use Fig. 4, it comprises a LED (light emitting diode) light source 301, a reflector plate 302, a light guide plate 303, reaches a prism apparatus 3; The light that this backlight module 300 sends is projeced on the display panel 310 and transmits, and reaches the purpose of display image.The beam Propagation that led light source 301 sends is to light guide plate 303, and reflector plate 302 matches with light guide plate 303 and converts light beam to area source by pointolite, and it is luminous perpendicular to a display panel 310 directions that light beam steering one direction is; Collect and mixed light beams via prism apparatus 3 again, make it in certain angle, enter display base plate 310 and transmit.Learn through experiment, use the backlight module of this prism apparatus, the hot spot (Mura) that is produced for the light skewness of emission side, and interference of light striped all improves significantly.
Prism apparatus of the present invention and backlight module thereof are than prior art, and the angular range on the long limit of little prism on two prismatic lens and base material is set in 1 °-89 °, makes both vertically to be provided with mutually.The design that it does not increase other blooming or significantly revises light guide plate only utilizes existing assembly to change the direction of its light path, promptly reaches the optical effect of optimization.And it can freely design the direction of the little prism on the prismatic lens wherein, when design LED-backlit module light path bigger elasticity is arranged, and the LED pointolite of mixing different colours that can be preferable.The display device structure that is particularly useful for side emitting.
Technology contents of the present invention and technical characterstic are described as above, yet the personnel that are familiar with this technology still may be based on enlightenment of the present invention and descriptions and made various replacement and the modifications that do not break away from spirit of the present invention.Therefore, protection scope of the present invention should be not limited to the described content of embodiment, and should comprise various do not break away from replacement of the present invention and modifications, and is encompassed in the appending claims.
Claims (13)
1, a kind of prism apparatus comprises two prismatic lenses that be arranged in parallel; Each prismatic lens comprises a rectangle base material, and this base material has the relative plane of incidence and exit facet; This exit facet is provided with a plurality of little prisms arranged side by side; It is characterized in that the corresponding little prism on described two prismatic lenses is vertical mutually to be provided with, and the angular range on little prism on each prismatic lens and the long limit of its base material is 1 ° to 89 °.
2, prism apparatus as claimed in claim 1 is characterized in that, the angle on the long limit of the little prism on the prismatic lens in this prism apparatus and its base material is 30 °, and the angle on the long limit of the little prism on another prismatic lens and its base material is 60 °.
3, prism apparatus as claimed in claim 1 is characterized in that, the angle on the long limit of the little prism on the prismatic lens in this prism apparatus and its base material is 1 °, and the angle on the long limit of the little prism on another prismatic lens and its base material is 89 °.
4, prism apparatus as claimed in claim 1 is characterized in that, the angle on the long limit of the little prism on the prismatic lens in this prism apparatus and its base material is 5 °, and the angle on the long limit of the little prism on another prismatic lens and its base material is 85 °.
5, prism apparatus as claimed in claim 1 is characterized in that, the angle on the long limit of the little prism on two prismatic lenses in this prism apparatus and its base material is 45 °.
6, a kind of backlight module, it comprises a light source, a reflector plate, a light guide plate, reaches just like each described prism apparatus among the claim 1-5.
7, backlight module as claimed in claim 6 is characterized in that, this light source is a led light source.
8, a kind of prismatic lens comprises a rectangle base material, and this base material has the relative plane of incidence and exit facet; This exit facet is provided with a plurality of little prisms arranged side by side; It is characterized in that the angular range on the long limit of this little prism and this base material is: more than or equal to 1 ° and less than 5 °; Or greater than 44.9 ° and smaller or equal to 89 °.
9, prismatic lens as claimed in claim 8 is characterized in that, the angle on the long limit of described little prism and this base material is 1 °.
10, prismatic lens as claimed in claim 8 is characterized in that, the angle on the long limit of described little prism and this base material is 45 °.
11, prismatic lens as claimed in claim 8 is characterized in that, the angle on the long limit of described little prism and this base material is 60 °.
12, prismatic lens as claimed in claim 8 is characterized in that, the angle on the long limit of described little prism and this base material is 85 °.
13, prismatic lens as claimed in claim 8 is characterized in that, the angle on the long limit of described little prism and this base material is 89 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810084272A CN101546040A (en) | 2008-03-28 | 2008-03-28 | Prismatic lens, prism device and backlight module thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810084272A CN101546040A (en) | 2008-03-28 | 2008-03-28 | Prismatic lens, prism device and backlight module thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101546040A true CN101546040A (en) | 2009-09-30 |
Family
ID=41193262
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810084272A Pending CN101546040A (en) | 2008-03-28 | 2008-03-28 | Prismatic lens, prism device and backlight module thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101546040A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102620212A (en) * | 2012-04-10 | 2012-08-01 | 深圳市华星光电技术有限公司 | Backlight module and liquid crystal display device |
| WO2014029119A1 (en) * | 2012-08-21 | 2014-02-27 | 深圳市华星光电技术有限公司 | Backlight module |
| CN108692221A (en) * | 2017-04-11 | 2018-10-23 | 扬升照明股份有限公司 | Light source module and its prismatic lens |
| CN108828701A (en) * | 2018-06-28 | 2018-11-16 | 京东方科技集团股份有限公司 | Prismatic lens, two-way prism assemblies and the display device with it |
-
2008
- 2008-03-28 CN CN200810084272A patent/CN101546040A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102620212A (en) * | 2012-04-10 | 2012-08-01 | 深圳市华星光电技术有限公司 | Backlight module and liquid crystal display device |
| WO2013152498A1 (en) * | 2012-04-10 | 2013-10-17 | 深圳市华星光电技术有限公司 | Backlight module and liquid crystal display device |
| WO2014029119A1 (en) * | 2012-08-21 | 2014-02-27 | 深圳市华星光电技术有限公司 | Backlight module |
| CN108692221A (en) * | 2017-04-11 | 2018-10-23 | 扬升照明股份有限公司 | Light source module and its prismatic lens |
| US10598847B2 (en) | 2017-04-11 | 2020-03-24 | Nano Precision Taiwan Limited | Light source module and prism sheet thereof |
| CN108828701A (en) * | 2018-06-28 | 2018-11-16 | 京东方科技集团股份有限公司 | Prismatic lens, two-way prism assemblies and the display device with it |
| WO2020001322A1 (en) * | 2018-06-28 | 2020-01-02 | 京东方科技集团股份有限公司 | Prism sheet, prism assembly and display device |
| CN108828701B (en) * | 2018-06-28 | 2020-06-26 | 京东方科技集团股份有限公司 | Prism sheet, bidirectional prism assembly and display device with same |
| US11061173B2 (en) | 2018-06-28 | 2021-07-13 | Beijing Boe Optoelectronics Technology Co., Ltd. | Prism sheet, prism assembly and display device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100585467C (en) | Backlight device, light source device, lens, electronic apparatus and light guide plate | |
| US8107036B2 (en) | Backlight device, liquid crystal display apparatus, and light deflecting sheet | |
| CN1222710C (en) | Illumination system and display device | |
| JP3931070B2 (en) | Planar light source device and liquid crystal display device including the same | |
| CN101883947B (en) | Illumination apparatus and display apparatus | |
| US20060215405A1 (en) | Light emitting assembly, backlight unit and display having the same | |
| CN101000125A (en) | Surface light source using light emitting diode and liquid crystal display backlight unit employing the same | |
| CN101349406B (en) | Backlight module | |
| CN1991499A (en) | Direct light type backlight unit and color filterless liquid crystal display apparatus employing the same | |
| US7810979B2 (en) | Illuminating device with primary color LED and fluorescent light sources, and liquid crystal display device | |
| CN1538201A (en) | Projection display | |
| JP4929307B2 (en) | Liquid crystal display without color filter | |
| US7663154B2 (en) | Backlight module and light emitting diode package structure therefor | |
| CN105242457A (en) | Light guide device with high color saturation | |
| US20180203300A1 (en) | Display device | |
| JP4622787B2 (en) | Backlight system and liquid crystal display device | |
| CN101546040A (en) | Prismatic lens, prism device and backlight module thereof | |
| CN101158784A (en) | Back light source | |
| CN101358711A (en) | Light supply apparatus and panel display | |
| CN104834049A (en) | Backlight module and liquid crystal display device | |
| TWI626472B (en) | High efficiency head-up display illumination system using three primary color sources | |
| CN108594432B (en) | High-efficiency head-up display illuminating system using three primary color light sources | |
| KR101814796B1 (en) | Back light umit within resin layer for light-guide and LCD using the same | |
| CN101382697B (en) | Backlight module unit | |
| CN100454096C (en) | Back light module with independent light source |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| ASS | Succession or assignment of patent right |
Owner name: ZHANJING TECHNOLOGY (SHENZHEN) CO., LTD. Free format text: FORMER OWNER: ADVANCED DEVELOPMENT PHOTOELECTRIC CO., LTD. Effective date: 20101122 Owner name: RONGCHUANG ENERGY TECHNOLOGY CO., LTD. |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: HSINCHU COUNTY, TAIWAN PROVINCE, CHINA TO: NO. 2, E. RING ROAD 2, INDUSTRY ZONE 10, YOUSONG, LONGHUA SUBDISTRICT OFFICE, BAO AN DISTRICT, SHENZHEN CITY, GUANGDONG PROVINCE |
|
| TA01 | Transfer of patent application right |
Effective date of registration: 20101122 Address after: No. two, No. 2, East Ring Road, Pinus tabulaeformis Industrial Zone, Longhua, Baoan District, Shenzhen, Guangdong, Applicant after: Zhanjing Technology (Shenzhen) Co., Ltd. Co-applicant after: Advanced Optoelectronic Technology Inc. Address before: Hsinchu County, Taiwan, China Applicant before: Advanced Development Photoelectric Co., Ltd. |
|
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20090930 |