CN1815323A - Liquid crystal display device and its backlight module - Google Patents
Liquid crystal display device and its backlight module Download PDFInfo
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- CN1815323A CN1815323A CN 200510005231 CN200510005231A CN1815323A CN 1815323 A CN1815323 A CN 1815323A CN 200510005231 CN200510005231 CN 200510005231 CN 200510005231 A CN200510005231 A CN 200510005231A CN 1815323 A CN1815323 A CN 1815323A
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- liquid crystal
- light source
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- crystal indicator
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Abstract
The back light module includes an optical template and multiple pieces of light source. The optical template possesses a first surface and a second surface faced to the first surface. The first surface possesses multiple zones of Fresnel pattern; and the zones are setup on the first surface in array mode. Multiple light sources are setup on one side of the optical template. The invention also discloses liquid crystal display unit of using the said back light module. Using multiple zones of Fresnel pattern, the invention adjusts angle and direction of outputting light ray in order to meet requirement for brightness and visual angle under different conditions.
Description
Technical field
The present invention relates to a kind of display device and module backlight thereof, particularly relate to a kind of liquid crystal indicator and module backlight thereof.
Background technology
Along with the arriving of multimedia era, the kenel of display device is to be tending towards variation, and wherein characteristics such as flat display apparatus, thin thickness in light weight with it become one of main flow of present development.
In flat display apparatus,, make its use field the most extensive because liquid crystal indicator has numerous advantages such as full color, high parsing, thin type, power saving and high contrast.The mobile phone screen of small size, vehicle-mounted display panel to the notebook computer screen and the desktop screen of middle size, are all the application of liquid crystal indicator until the large scale liquid crystal TV of today from the beginning.
See also shown in Figure 1ly, present large-sized liquid crystal indicator 1 comprises a liquid crystal board 11 and a module 12 backlight.Wherein, module 12 backlight mainly comprises a prismatic lens 121, a diffuser plate 122, a light source 123, a reflection horizon 124 and a housing 125, wherein, the light that light source 123 is launched is via the reflection in reflection horizon 124, direction towards diffuser plate 122 is penetrated, and light penetrates diffuser plate 122 and prismatic lens 121 in regular turn, then is incident upon liquid crystal board 11, control the time of break-through and order of light at last by the liquid crystal born of the same parents in the liquid crystal board 11, to produce the picture that the user was watched.
Generally speaking, light source 123 in the liquid crystal indicator 1 mostly uses cold cathode fluorescent tube (CCFL), hot cathode fluorescent tube or plane fluorescent tube as light source, but technical progress along with light emitting diode, light emitting diode (Light emitted diode again, LED) having extra long life, power saving, low operating voltage, height and drill that look rate, low-temperature operation, reaction velocity are fast, the advantage of compliance with environmental protection requirements (no Hg), all is that existing CCFL light source is incomparable.Therefore the LED array light source that a plurality of light emitting diodes are formed is existing progressively to replace CCFL becomes the liquid crystal screen display light source, has become following trend.
But because LED array light source is to arrange with array way for a plurality of light emitting diodes to form, and light emitting diode is the light source for high brightness, therefore the space between each light emitting diode is easy to generate blanking bar, and then the whole uniformity coefficient performance of influence.
In addition, because the prismatic lens 121 in the existing known liquid crystal indicator 1 is made up of the identical prism of a plurality of sizes, shape and angle, when light during by prismatic lens 121, light can converge concentrated, to promote the brightness of liquid crystal indicator 1.Moreover, because the prism on the prismatic lens 121 is all identical shaped, equal angular, so the degree of light-ray condensing is changeless.Be with, if will take the demand of LCD TV wide viewing angle into account, the puzzlement that present liquid crystal indicator 1 can produce the central brightness deficiency because the angle of light emission is too disperseed; On the other hand, if reach the requirement of central brightness, certainly will sacrifice considering of visual angle again, and can't satisfy the demand of LCD TV wide viewing angle.
This shows that above-mentioned existing liquid crystal indicator and module backlight thereof obviously still have inconvenience and defective, and demand urgently further being improved in structure and use.In order to solve the problem that liquid crystal indicator and module backlight thereof exist, relevant manufacturer there's no one who doesn't or isn't seeks solution painstakingly, but do not see always that for a long time suitable design finished by development, and common product does not have appropriate structure to address the above problem, and this obviously is the problem that the anxious desire of relevant dealer solves.
Because the defective that above-mentioned existing liquid crystal indicator and module backlight thereof exist, the inventor is based on being engaged in this type of product design manufacturing abundant for many years practical experience and professional knowledge, and the utilization of cooperation scientific principle, actively studied innovation, in the hope of liquid crystal indicator and the module backlight thereof of founding a kind of new structure, can improve general existing liquid crystal indicator and module backlight thereof, make it have more practicality.Through constantly research, design, and after studying sample and improvement repeatedly, create the present invention who has practical value finally.
Summary of the invention
The objective of the invention is to, overcome the defective that existing liquid crystal indicator exists, and provide a kind of liquid crystal indicator and module backlight thereof of new structure, technical matters to be solved is to make it can make the light source homogenising, and can regulate and control the liquid crystal indicator that light source penetrates angle and direction, thereby be suitable for practicality more.
Another object of the present invention is to, a kind of module backlight of liquid crystal indicator is provided, technical matters to be solved is to make it can make the light source homogenising, and can regulate and control the liquid crystal indicator that light source penetrates angle and direction and divide module backlight, thereby is suitable for practicality more.
The object of the invention to solve the technical problems realizes by the following technical solutions.Module a kind of backlight according to the present invention's proposition, it comprises: an optics template, it is to have a first surface and a second surface relative with this first surface, and this first surface has a plurality of Fresnel lines district, and these Fresnel lines districts are arranged at this first surface with array way; And a plurality of light sources, it is a side that is arranged at this optics template.
The object of the invention to solve the technical problems also can be applied to the following technical measures to achieve further.
Aforesaid module backlight, it more comprises: a housing, this housing are to have an opening, and this optics template is to engage with this opening, and this optics template and this housing form an accommodation space, these light sources are to be arranged at this housing and to be arranged in this accommodation space.
Aforesaid module backlight, wherein said Fresnel lines district has at least one focal length.
One of corresponding at least these Fresnel lines districts of aforesaid module backlight, wherein said each light source.
Aforesaid module backlight, wherein said light source are to be a light-emitting diodes volume array.
Aforesaid module backlight, wherein said light source template has an optical mode and a transparency carrier, and this optical mode and this transparency carrier fit.
Aforesaid module backlight, it more comprises: a diffuser plate, this transparency carrier are between this optical mode and this diffuser plate, this diffuser plate faces is located at this transparency carrier.
The object of the invention to solve the technical problems also adopts following technical scheme to realize.A kind of liquid crystal indicator according to the present invention's proposition, be to contain a liquid crystal board and a module backlight, this module backlight is to comprise: an optics template, this optics template is to have a first surface and a second surface relative with this first surface, this first surface has a plurality of Fresnel lines district, and these Fresnel lines districts are arranged on this first surface with array way; And a plurality of light sources, it is a side that is arranged at this optics template, and this optics template is to be arranged between this liquid crystal board and these light sources.
The object of the invention to solve the technical problems also can be applied to the following technical measures to achieve further.
Aforesaid liquid crystal indicator, wherein said its more comprises: a housing, this housing are to have an opening, and this optics template is to engage with this opening, and this optics template and this housing form an accommodation space, and these light sources are to be arranged at this housing and to be arranged in this accommodation space.
Aforesaid liquid crystal indicator, wherein said Fresnel lines district has at least one focal length.
Corresponding at least these Fresnel lines districts of aforesaid liquid crystal indicator, wherein said each light source one of them.
Aforesaid liquid crystal indicator, wherein said light source are to be a light-emitting diodes volume array.
Aforesaid liquid crystal indicator, wherein said light source template has an optical mode and a transparency carrier, and this optical mode and this transparency carrier fit.
Aforesaid liquid crystal indicator, it more comprises: a diffuser plate, this transparency carrier are between this optical mode and this diffuser plate, this diffuser plate faces is located at this transparency carrier.
The present invention compared with prior art has tangible advantage and beneficial effect.By above technical scheme as can be known, in order to reach aforementioned goal of the invention, major technique of the present invention thes contents are as follows:
According to module backlight of the present invention, comprise an optics template and a plurality of light source.Wherein, the optics template has a first surface and a second surface relative with first surface, and first surface has a plurality of Fresnel lines district, and these Fresnel lines districts are arranged at first surface with array way; A plurality of light sources are arranged at a side of optics template.
And liquid crystal indicator of the present invention, comprise a liquid crystal board, an optics template and a plurality of light source.Wherein, the optics template is to have a first surface and a second surface relative with first surface, and first surface has a plurality of Fresnel lines district, and these Fresnel lines districts are arranged on the first surface with array way; A plurality of light sources are arranged at a side of optics template, and the optics template is to be arranged between liquid crystal board and these light sources.
By technique scheme, the present invention has following advantage at least:
Because of can make the equalizing light rays and the emitted angle and the direction of adjustable light source of light source according to liquid crystal indicator of the present invention and module backlight thereof.Compare with existing known techniques, utilization of the present invention has a plurality of Fresnel lines and regulates and control angle and the direction that light penetrates, to meet the requirement of brightness and visual angle under the different situations.With the LCD TV is example, and the present invention can reach the requirement of wide viewing angle and high brightness simultaneously.Moreover, because angle and direction that the adjustable light of the present invention penetrates, also can solve that the problem of blanking bar takes place easily in the space between each light-emittingdiode of light-emitting diodes volume array, and then promote the uniformity coefficient of liquid crystal indicator.
In sum, the liquid crystal indicator of special construction of the present invention and module backlight thereof, it can make the light source homogenising, and can regulate and control light source and penetrate angle and direction.It has above-mentioned many advantages and practical value, and in like product, do not see have similar structural design to publish or use and really genus innovation, no matter it all has bigger improvement on the structure of product or function, have large improvement technically, and produced handy and practical effect, and more existing liquid crystal indicator and module backlight thereof have the multinomial effect of enhancement, thereby be suitable for practicality more, and have the extensive value of industry, really be a new and innovative, progressive, practical new design.
Above-mentioned explanation only is the general introduction of technical solution of the present invention, for can clearer understanding technological means of the present invention, and can be implemented according to the content of instructions, and for above-mentioned and other purposes, feature and advantage of the present invention can be become apparent, below especially exemplified by going out a plurality of preferred embodiments, and conjunction with figs., be described in detail as follows.
Description of drawings
Fig. 1 is the synoptic diagram for existing known large scale liquid crystal display device.
Fig. 2 A is the exploded perspective view of the module backlight of preferred embodiment of the present invention.
Fig. 2 B is the cut-open view of the module backlight of preferred embodiment of the present invention among Fig. 2 A.
Fig. 3 is the synoptic diagram for the module backlight of another preferred embodiment of the present invention.
Fig. 4 and Fig. 5 are the present invention's synoptic diagram of the module backlight of a preferred embodiment again.
Fig. 6 is another aspect of the optics template of preferred embodiment of the present invention.
Fig. 7 is the synoptic diagram for the liquid crystal indicator of preferred embodiment of the present invention.
1: liquid crystal indicator 11: liquid crystal board
12: module 121 backlight: prismatic lens
122: diffuser plate 123: light source
124: reflection horizon 125: housing
2: module 21,21 ' backlight: optics template
21a: transparency carrier 21b: optical mode
211: first surface 2111: Fresnel lines district
212: second surface 22: light source
23: housing 24: accommodation space
25: diffuser plate 3: liquid crystal indicator
31: 311: the first Polarizers of liquid crystal board
312: 313: the first electrodes of filter layer
314: liquid crystal layer 315: membrane transistor circuit (TFT)
Polarizer 32 in 316: the second: the optics template
321: first surface 3211: Fresnel lines district
322: second surface 33: light source
34: housing 35: diffuser plate
Embodiment
Reach technological means and the effect that predetermined goal of the invention is taked for further setting forth the present invention, below in conjunction with accompanying drawing and preferred embodiment, to liquid crystal indicator and its embodiment of module backlight, structure, feature and the effect thereof that foundation the present invention proposes, describe in detail as after.
See also shown in Fig. 2 A and Fig. 2 B, module backlight 2 according to preferred embodiment of the present invention, comprise an optics template 21 and a plurality of light source 22, wherein, optics template 21 is to have a first surface 211 and a second surface 212 relative with first surface 211, and first surface 211 is to have a plurality of Fresnel lines district 2111.In this preferred embodiment, a plurality of Fresnel lines district 2111 is arranged on the first surface 211 with array way.
A plurality of light sources 22 are arranged at a side of optics template 21, in this preferred embodiment, light source 22 is to be light-emittingdiode, and a plurality of light sources 22 are arranged at first surface 211 with array way and then form a light-emitting diodes volume array, in addition one of corresponding at least these Fresnel lines districts 2111 of each light source 22.
Please refer to Fig. 2 B again, the module backlight 2 of present embodiment more comprises a housing 23, and housing 23 is to have an opening, and optics template 21 is to engage with opening, and optics template 21 forms an accommodation space 24 with housing 23, and a plurality of light sources 22 are to be arranged at housing 23 and to be arranged in accommodation space 24.
In the present embodiment, optics template 21 can be flexible (flexible) substrate or rigidity (rigid) substrate.Simultaneously, optics template 21 can also be plastic cement (plastic) substrate or glass substrate.Wherein, flexible base, board and plastic substrate can be polycarbonate (polycarbonate, PC) substrate, polyester (polyester, PET) substrate, crome metal compound base material-cyclenes copolymer (cyclicolefin copolymer, COC) substrate or cyclenes copolymer (metallocene-based cyclicolefin copolymer, mCOC) substrate or the like.
In addition, shown in Fig. 2 B, the first surface 211 of optics template 21 is to have a plurality of Fresnel lines district 2111, and wherein, Fresnel lines district 2111 has at least one focal length (focallength).Shown in Fig. 2 B, Fresnel lines district 2111 has single focal length.In the present embodiment, behind light penetration Fresnel lines district 2221, light produce to be concentrated or the angle of dispersing is relevant with the relative position of the focal length in light source 22 and Fresnel lines district 2111.Be with, shown in Fig. 2 B, this optical path is for convenience of description usefulness only, and the optical path of present embodiment is not, and limit is at this optical path.
In addition.As shown in Figure 3, Fresnel lines district 2111 has two focal lengths, at this, because Fresnel lines district 2111 has two focal lengths, is that the part with light source 22 emitted lights is the middle section that can be gathered in Fresnel lines district 2111; And another part is can be dissipated into the both sides in Fresnel lines district 2111 in order to compensate the problem of space luminance shortage between each light source 22.
In this preferred embodiment, one of them is corresponding for each light source 22 and a plurality of Fresnel lines district 2111, each light source 22 is to face to be located at each Fresnel lines district 2111 central authorities, and in other words, the quantity of light source 22 is the quantity that is equal to Fresnel lines district 2111.But must attention person, the present invention does not limit light source must be corresponding one to one with Fresnel lines district 2111, light source 22 and Fresnel lines district 2111 both to can be one-to-many corresponding or many-one is corresponding.
In addition, please refer to Fig. 2 B again, the second surface 212 of optics template 21 is to face mutually with light source 22.Certainly, as shown in Figure 3, the first surface 211 of optics template 21 also can be faced mutually with light source 22.
In addition, the module backlight 2 of present embodiment is the diffusion particle that can mix.In the present embodiment, diffusion particle is to be doped in the optics template 21.In the present embodiment, diffusion particle is to revise the angle that light is advanced, and also can strengthen scattering and handle, and then reach the effect of atomizing.
Moreover as Fig. 2 B and shown in Figure 3, the module backlight 2 of present embodiment more comprises a diffuser plate (Diffuser) 25, and diffuser plate 25 is between optics template 21 and a plurality of light source 22.Certainly, diffuser plate 25 also can face and is located at optics template 21 (not being shown among the figure).
In addition, as Fig. 4 and shown in Figure 5, optics template 21 is between light source 22 and diffuser plate 25.At this, diffuser plate 25 is to be arranged at (as Fig. 4 and Fig. 5) on the optics template 21.Certainly, diffuser plate 25 also can face and is located at optics template 21 times (not being shown among the figure).
In addition, more see also Fig. 6, be another aspect of the optics template 21 ' of preferred embodiment of the present invention.Wherein optics template 21 ' has a transparency carrier 21a and an optical mode 21b, wherein, the surface of optical mode 21b has a plurality of Fresnel lines district 2111, and a plurality of Fresnel lines district 2111 is arranged on this surface with array way, and another surface of optical mode 21b is to fit with transparency carrier 21a, and then form optics template 21 ', wherein in the present embodiment, transparency carrier 21a makes a general reference the sheet material of any light-permeable.For example.Transparency carrier 21a can be flexible (flexible) substrate or rigidity (rigid) substrate.Simultaneously, transparency carrier 21a can also be plastic cement (plastic) substrate or glass substrate.
Wherein, transparency carrier 21a is can be between optical mode 21b and diffuser plate 25.At this, diffuser plate 25 is to be arranged at (as Fig. 6) under the transparency carrier 21a.Certainly, diffuser plate 25 also can face and is located at transparency carrier 21a and goes up (not being shown among the figure).
Hold as above-mentioned, the module backlight 2 of present embodiment can be but not be defined as the module backlight of liquid crystal indicator.
See also shown in Figure 7, liquid crystal indicator 3 for preferred embodiment of the present invention, comprise a liquid crystal board 31, an optics template 32 and a plurality of light source 33, wherein, optics template 32 is to have a first surface 321 and a second surface 322 relative with first surface 321, and first surface 321 is to have a plurality of Fresnel lines district 3211.A plurality of light sources 33 are sides that are arranged at optics template 32, and optics template 32 is between liquid crystal board 31 and light source 33.
In the present embodiment, liquid crystal indicator 3 more comprises a housing 34, a diffuser plate 35.
The function and the feature of the optics template 32 of present embodiment, light source 33, housing 34, diffuser plate 35 is identical with the similar elements of Fig. 2 B, do not repeat them here.
In addition, the liquid crystal board in the present embodiment 31 is to comprise one first Polarizer 311, a filter layer 312, one first electrode 313, a liquid crystal layer 314, a membrane transistor circuit (TFT) 315 and one second Polarizer 316 in regular turn.Certainly, the composed component of liquid crystal board 31 can adjust according to actual demand.
As shown in Figure 7, the light that a plurality of light sources 33 are launched is incident upon liquid crystal board 31 via diffuser plate 35 and optics template 32, then, membrane transistor circuit 315 is the start angles of each the liquid crystal born of the same parents in the control liquid crystal layer 314, brightness and time so that further control light passes through, become the picture of being seen in user's eye at last.
In addition, the Fresnel lines district 3211 of present embodiment has at least one focal length, when Fresnel lines district 3211 has two focal lengths (as above-mentioned shown in Figure 3), the part of light source 33 emitted lights is the middle sections that can be gathered in Fresnel lines district 3211, and another part is can be dissipated into the both sides in Fresnel lines district 3211 to compensate the problem of space deficiency between each light-emittingdiode, is to be to have advantages such as wide viewing angle and high brightness with liquid crystal indicator 3.
From the above, because of making emitted equalizing light rays of a plurality of light sources and emitted angle and the direction of adjustable light source according to liquid crystal indicator of the present invention and module backlight thereof.Compare with existing known techniques, utilization of the present invention has a plurality of Fresnel lines and regulates and control angle and the direction that light penetrates, to meet the requirement of brightness and visual angle under the different situations.With the LCD TV is example, and the present invention can reach the requirement of wide viewing angle and high brightness simultaneously.Moreover, because angle and direction that the adjustable light of the present invention penetrates, also can solve that the problem of blanking bar takes place easily in the space between each light-emittingdiode of light-emitting diodes volume array, and then promote the uniformity coefficient of liquid crystal indicator.
The above, it only is preferred embodiment of the present invention, be not that the present invention is done any pro forma restriction, though the present invention discloses as above with preferred embodiment, yet be not in order to limit the present invention, any those skilled in the art, in not breaking away from the technical solution of the present invention scope, when the technology contents that can utilize above-mentioned announcement is made a little change or is modified to the equivalent embodiment of equivalent variations, in every case be the content that does not break away from technical solution of the present invention, according to technical spirit of the present invention to any simple modification that above embodiment did, equivalent variations and modification all still belong in the scope of technical solution of the present invention.
Claims (14)
1, a kind of module backlight is characterized in that it comprises:
One optics template, it is to have a first surface and a second surface relative with this first surface, and this first surface has a plurality of Fresnel lines district, and these Fresnel lines districts are arranged at this first surface with array way; And
A plurality of light sources, it is a side that is arranged at this optics template.
2, module backlight according to claim 1 is characterized in that it more comprises:
One housing, this housing are to have an opening, and this optics template is to engage with this opening, and this optics template and this housing form an accommodation space, and these light sources are to be arranged at this housing and to be arranged in this accommodation space.
3, module backlight according to claim 1 is characterized in that wherein said Fresnel lines district has at least one focal length.
4, module backlight according to claim 1 is characterized in that one of corresponding at least these Fresnel lines districts of wherein said each light source.
5, module backlight according to claim 1 is characterized in that wherein said light source is to be a light-emitting diodes volume array.
6, module backlight according to claim 1 is characterized in that wherein said light source template has an optical mode and a transparency carrier, and this optical mode and this transparency carrier fit.
7, module backlight according to claim 6 is characterized in that more comprising:
One diffuser plate, this transparency carrier are between this optical mode and this diffuser plate, and this diffuser plate faces is located at this transparency carrier.
8, a kind of liquid crystal indicator is to contain a liquid crystal board and a module backlight, it is characterized in that this module backlight is to comprise:
One optics template, this optics template are to have a first surface and a second surface relative with this first surface, and this first surface has a plurality of Fresnel lines district, and these Fresnel lines districts are arranged on this first surface with array way; And
A plurality of light sources, it is a side that is arranged at this optics template, and this optics template is to be arranged between this liquid crystal board and these light sources.
9, liquid crystal indicator according to claim 8 is characterized in that it more comprises:
One housing, this housing are to have an opening, and this optics template is to engage with this opening, and this optics template and this housing form an accommodation space, and these light sources are to be arranged at this housing and to be arranged in this accommodation space.
10, liquid crystal indicator according to claim 9 is characterized in that wherein said Fresnel lines district has at least one focal length.
11, liquid crystal indicator according to claim 9, it is characterized in that corresponding at least these Fresnel lines districts of wherein said each light source one of them.
12, liquid crystal indicator according to claim 9 is characterized in that wherein said light source is to be a light-emitting diodes volume array.
13, liquid crystal indicator according to claim 9 is characterized in that wherein said light source template has an optical mode and a transparency carrier, and this optical mode and this transparency carrier fit.
14, liquid crystal indicator according to claim 13 is characterized in that it more comprises:
One diffuser plate, this transparency carrier are between this optical mode and this diffuser plate, and this diffuser plate faces is located at this transparency carrier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2005100052312A CN100406993C (en) | 2005-02-01 | 2005-02-01 | Liquid crystal display device and its backlight module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2005100052312A CN100406993C (en) | 2005-02-01 | 2005-02-01 | Liquid crystal display device and its backlight module |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1815323A true CN1815323A (en) | 2006-08-09 |
| CN100406993C CN100406993C (en) | 2008-07-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2005100052312A Expired - Fee Related CN100406993C (en) | 2005-02-01 | 2005-02-01 | Liquid crystal display device and its backlight module |
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| Country | Link |
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| CN (1) | CN100406993C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103969740A (en) * | 2013-01-31 | 2014-08-06 | 鸿富锦精密工业（深圳）有限公司 | Diffusion lens, light source module and surface light source |
| CN111142259A (en) * | 2019-12-21 | 2020-05-12 | 江苏泽景汽车电子股份有限公司 | Reflective cup and splicing type Fresnel lens combined HUD backlight system |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020149717A1 (en) * | 1997-01-29 | 2002-10-17 | Borrelli Nicholas F. | Lens array on LCD panel and method |
| DE10129743C2 (en) * | 2001-06-20 | 2003-05-08 | Daimler Chrysler Ag | Vehicle headlight, with a number of electronic lighting elements as the light source |
| US6663262B2 (en) * | 2001-09-10 | 2003-12-16 | 3M Innovative Properties Company | Backlighting transmissive displays |
| CN2665747Y (en) * | 2003-06-30 | 2004-12-22 | 财团法人工业技术研究院 | Area source modulation device and module for high visible LED |
-
2005
- 2005-02-01 CN CN2005100052312A patent/CN100406993C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103969740A (en) * | 2013-01-31 | 2014-08-06 | 鸿富锦精密工业（深圳）有限公司 | Diffusion lens, light source module and surface light source |
| CN111142259A (en) * | 2019-12-21 | 2020-05-12 | 江苏泽景汽车电子股份有限公司 | Reflective cup and splicing type Fresnel lens combined HUD backlight system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100406993C (en) | 2008-07-30 |
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