CN101349827A - Polarized light transmitting element - Google Patents
Polarized light transmitting element Download PDFInfo
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- CN101349827A CN101349827A CNA2007101366994A CN200710136699A CN101349827A CN 101349827 A CN101349827 A CN 101349827A CN A2007101366994 A CNA2007101366994 A CN A2007101366994A CN 200710136699 A CN200710136699 A CN 200710136699A CN 101349827 A CN101349827 A CN 101349827A
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- optical thin
- thin film
- polarized light
- transmitting element
- light source
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Abstract
A polarized light transmission component capable of providing polarized lights comprises a light source, first and second optical films which are stacked alternatively, wherein each first optical film and each second optical film are respectively provided with a plurality of first geometric units and a plurality second geometric units, the emergence surface of the light source has a binary periodical structure. The polarized light transmission component can directly provide the polarized light of high luminance and a special polarization character.
Description
Technical field
The present invention relates to a kind of polarized light transmitting element, relate in particular to a kind of polarized light transmitting element that can be applicable to liquid crystal display backlight module.
Background technology
Backlight module (back light unit) is LCD (liquid crystal display, LCD) one of key component, because liquid crystal panel (LCD panel) itself is the luminous ability of tool not, need backlight module that enough brightness and the light source that is evenly distributed are provided.LCD has been widely used in the electronic product of monitor, tool growth potentiality such as notes computer, digital camera and projector at present, thereby drives lasting growth of demand of backlight module and related elements thereof.
Please refer to Fig. 1, Fig. 1 is the synoptic diagram of known LCD member.Known LCD member comprises liquid crystal panel 2, following polaroid 4, goes up polaroid 6 and backlight module 8, and wherein liquid crystal panel 2 comprises elements such as TFT substrate, alignment film, liquid crystal layer, colored filter, and these are the main composition element of LCD; The operation of LCD principle is to utilize the photoelectric characteristic of liquid crystal material, changes the liquid crystal arrangement direction demonstrating the light and shade difference by extra electric field, and arrange in pairs or groups upper and lower polaroid and colored filter are with display frame.The backlight liquid crystal display module is many with cold-cathode tube (CCFL) or light emitting diode (light-emitting diode at present, hereinafter to be referred as LED) be main back light, characteristics such as wherein LED possesses low driving voltage, the life-span is long, luminescence efficiency is high, no mercury and high color reprodubility, thereby have the potentiality that replace cold-cathode tube.Yet the light that LED produced, can be before being incident to liquid crystal panel because the difference of propagation medium refractive index, and can be subjected to the restriction of critical angle, that is to say, when the incident angle of light during greater than critical angle, this light will can't reflect in blooming piece surface total reflection and penetrate blooming piece and provide liquid crystal panel enough light sources; In addition, light is through layer by layer blooming piece and liquid crystal panel, and light can be absorbed thereby reduce light utilization; Simultaneously, must reach the effect of polarization via upper and lower polaroid, in this process, have light more than half to be absorbed by polaroid from the light source of backlight module.Because most light loss in said process has become the important topic that backlight module designs so promote the light source utilization factor so that enough brightness to be provided.
Summary of the invention
Therefore, a purpose of the present invention is to provide a kind of polarized light transmitting element, and the polarized light of high briliancy can directly be provided, and simplifies the structure of known LCD.
For reaching above-mentioned purpose, the invention provides a kind of polarized light transmitting element, it comprises light source, is located at first optical thin film and second optical thin film of the exit facet of this light source.The thickness of this first optical thin film is d1, and this first optical thin film comprises first geometric units that a plurality of width are a1, and wherein these first geometric units are along the first direction repeated arrangement, and 0.2≤d
1/ a
1≤ 2; In addition, the thickness of this second optical thin film is d2, and this second optical thin film comprises second geometric units that a plurality of width are a2, and wherein these second geometric units are also along this first direction repeated arrangement, and 0.2≤d2/a2≤2.
Polarized light transmitting element of the present invention can not only directly provide the polarized light with specific polarization characteristic, when polarized light transmitting element of the present invention is used in backlight module, the exitance of its light and light source utilization factor are all better than known backlight module, are good backlight module element.
Description of drawings
Fig. 1 is the synoptic diagram of known LCD member;
Fig. 2 is the synoptic diagram according to the polarized light transmitting element shown in first preferred embodiment of the present invention;
Fig. 3 is the embodiment of first geometric units of the present invention and second other form of geometric units;
Fig. 4 is the graph of a relation of light wave vector and incident light normalized frequency among first embodiment;
Fig. 5 is for using the synoptic diagram that these optical thin films screen the polarized light of specific polarization characteristics;
Fig. 6 and Fig. 7 are for presenting the result of these optical thin film screening TE polarized lights and TM polarized light in the mode that quantizes;
Fig. 8 is the synoptic diagram of the polarized light transmitting element shown in according to a second embodiment of the present invention;
Fig. 9 shows the graph of a relation between these optical film thicknesses of the present invention, these geometric units sizes and photonic bandgap;
Figure 10 illustrates the embodiment of Fig. 9, when h=0.25a, and the graph of a relation of d1/a and d2/a;
Figure 11 illustrates the structural representation that is combined as the LCD of backlight module with polarized light transmitting element of the present invention.
[main element symbol description]
4 times polaroids of 2 liquid crystal panels
Polaroid 8 backlight modules on 6
10 polarized light transmitting elements, 12 light sources
121 n type semiconductor layer, 122 active layers
123 p type semiconductor layer 124 go out photosphere
16 second optical thin films, 17 second geometric units
18 first optical thin films, 19 first geometric units
26 polarized light transmitting elements, 28 reflection horizon
29 encapsulating structures, 30 LCD
32 backlight modules, 34 liquid crystal panels
Polaroid 38 chromatic polarization photocells on 36
40 green polarized light transmitting element 42 blue polarized light transmitting elements
Embodiment
For making those skilled in the art further understand the present invention, hereinafter the spy enumerates some preferred embodiments, and cooperates appended diagram, component symbol etc., describe in detail constitution content of the present invention and the effect desiring to reach.
Fig. 2 is the synoptic diagram of the polarized light transmitting element 10 of first embodiment of the invention.Polarized light transmitting element 10 comprises light source 12, multilayer first optical thin film 18 and multilayer second optical thin film 16, is staggeredly stacked in regular turn in the exit facet of light source 12.The thickness of first optical thin film 18 is d
1, it has a plurality of first geometric units 19, and this first geometric units 19 is arranged the structure that forms the tool serrated crosssection in regular turn, its other width and highly be respectively a
1And h
1In addition, the thickness of second optical thin film 16 is d
2, it has the structure that a plurality of second geometric units, 17, the second geometric units 17 also arrange to form the tool serrated crosssection in regular turn, its other width and highly be respectively a
2And h
2
Generally speaking, first geometric units 19 and second geometric units Unit 17 repeat or the crossover arrangement along directions X (first direction), Y direction or Z direction (second direction) respectively, form as having the binary periodic structure of serrated crosssection among Fig. 2.In addition, light source 12 is not limited to the horizontal section shown in the figure with the interface of these optical thin films, also can form the cross section of zigzag, other form such as wavy, and those periodic structures have the effect of polarization when nanometer (nanometer) magnitude.
In addition, first geometric units 19 of the present invention and second geometric units 17 are not limited to the structure of the serrated crosssection of identical size shown in Figure 2, tight adjoining arrangement, its embodiment can be shown in Fig. 3 a, the serrated crosssection structure has the interval that density is arranged, or shown in Fig. 3 b, form the serrated crosssection structure of different sizes.
In present embodiment, light source 12 can be the LED element, it includes n type semiconductor layer 121, active layers (active layer) 122, p type semiconductor layer 123 and goes out photosphere (windowlayer) 124 and piles up in regular turn and form, so that the light of different wave length to be provided, and has first optical thin film 18 of binary periodic structure and the refractive index of second optical thin film 16 is respectively n
1And n
2, wherein, first optical thin film 18 can adopt silicon (Si), germanium (Ge), gallium arsenide (GaAs) and combination or other refractive index thereof greater than 2 dielectric material, and second optical thin film layer 16 then is to comprise silicon dioxide (SiO
2), magnesium oxide (MgO), alundum (Al (Al
2O
3), silicon nitride (Si
3N
4) and combination or other refractive index be not equal to the dielectric material of first optical thin film 18, the refractive index difference of first optical thin film 18 and second optical thin film 16 is the bigger the better simultaneously.In addition, when selecting first optical thin film 18 and second optical thin film, 16 materials, when considering the absorption coefficient of light of applying frequency band material itself, be preferably and select applying frequency band of light absorption coefficient the smaller the better.
Moreover, by first optical thin film 18 and 16 periodic structures that constitute jointly of second optical thin film serrated crosssection in diagram, other for example has sphere, rectangle, sexangle, other multi-form spatial structure such as wavy also is applicable to the present invention among first embodiment.Specifically, be example with the serrated crosssection of first optical thin film 18 shown in Figure 2 and second optical thin film 16, because first geometric units 19 is a same size with second geometric units 17, so the width a of first geometric units
1Just equal the width a of second geometric units
2, the width h of first geometric units
1Just equal the width h of second geometric units
2, and in the manufacturing process of polarized light transmitting element 10, a
1, a
2The big young pathbreaker wavelength X that is set at the light that light source 12 produced be multiplied by the long-pending of normalized frequency (normalized frequency) f that these optical film stack poststacks are tried to achieve, the i.e. a of first embodiment
1=a
2=λ f will illustrate in the diagram of back in addition as for the calculating of f value.In addition, when making polarized light transmitting element 10, the thickness d of first optical thin film 18
1, second optical thin film 16 thickness d
2, first geometric element 19 height h
1And the height h of second geometric element 17
2, will be set at first geometric units, 19 width a
1Or second geometric units, 17 width a
2Multiple, d for example
1=ia
1, d
2=ja
2, h
1=ka
2, h
2=la
2, wherein i, j, k, l are constant, processing procedure when its numerical value will be looked and implement or product demand and change.
Fig. 4 is that the light that produces when light source 12 among first embodiment is when inciding first optical thin film 18 that piles up alternately and second optical thin film 16, the graph of a relation of light wave vector and incident light normalized frequency, wherein, the light of light source 12 comprises direction of an electric field TE polarized light vertical with light application direction (Z direction) (transverse electric mode) and the magnetic direction TM polarized light (transverse magnetic mode) vertical with the light application direction.Fig. 4 utilizes plane wave expansion method (Plane-wave expansion method), fourier expansion progression substitution Maxwell ' sequation with specific inductive capacity, electric field and the magnetic field of first optical thin film and second optical thin film, and calculating its graph of a relation along the pairing normalized frequency f of wave vector k value at First Brillouin zone edge, Fig. 4 is an example with the TE polarized light.First optical thin film 18 that piles up alternately of incident light incident and the polarized light of second optical thin film 16 have photonic bandgap (photonic band gap) as can be seen by the curve distribution of figure medium frequency, this photonic bandgap is a frequency separation, when the incident light of this frequency separation is incident to these optical thin films by the outside, because polarized light TE does not have the communication mode (propagatingmode) corresponding with it in these optical thin films, so this polarized light TE can fully be reflected back; And polarized light TM has corresponding communication mode in this frequency separation, so the complete transmission of this polarized light TM meeting, and the pairing frequency separation of this photonic bandgap is the frequency separation that these optical thin films are applied to polarizer.What this will illustrate in addition be, the graph of a relation of the wave vector of these optical thin films and incident light normalized frequency can be because of first optical thin film 18 of forming these optical thin films and the thickness of second optical thin film 16, the width of refractive index and geometric units, highly change, and the number of frequency bands of photonic bandgap is not limited to a frequency range shown in Figure 4, when those optical thin films of the material of selecting different refractivity for use, the quantity of photonic bandgap and frequency separation big young pathbreaker change according to material category, and the frequency separation size of photonic bandgap will influence the scope of these optical thin films on polarized light transmitting element is used, for example this optical film thickness when photonic bandgap has bigger frequency separation, has bigger scope in the selection of refractive index and geometric units height.
Fig. 5 is for using the synoptic diagram that those optical thin films screen the polarized light of specific polarization characteristics.Wherein, first optical thin film 18 and second optical thin film 16 are positioned at the exit facet of light source 12, comprise direction of an electric field TE polarized light vertical with light application direction (z direction) (transverse electric mode) and the magnetic direction TM polarized light (transverse magnetic mode) vertical with the light application direction from the light of light source 12 (not shown).These optical thin films of the present invention can directly provide the polarized light with specific polarization characteristic after making up with the light source 12 that initiatively produces light, use for other optical element.Fig. 6 and Fig. 7 then are the results with mode presentation graphs 5 first optical thin films 18 that quantize and second optical thin film, 16 screening TE polarized lights and TM polarized light, wherein, the x axle is the number of plies that first optical thin film 18 and second optical thin film 16 pile up, every layer of structure comprises one group of first optical thin film 18 of the present invention and second optical thin film 16, and the y axle then is respectively the ratio of TE polarized light and TM polarized light transmission.
Again with reference to figure 4, in first embodiment, when selecting refractive index n for use
1=3.5 first optical thin film 18 and the refractive index n
2=1.5 second optical thin film 16 is stacked in the exit facet of light source 12 alternately, can obtain a photonic bandgap, and its frequency separation is approximately between 0.415 to 0.435.Again by Fig. 6,7 as can be known, the transmissivity of TE polarized light descends gradually along with the increase of these optical thin film numbers of plies after the number of plies is greater than 4, and last, the forward transmissivity of TE polarized light levels off to about 0.006; And after the number of plies sees through these optical thin films greater than TM polarized light after 8, its forward transmissivity levels off to about 0.82, learn as calculated that be about 60～170 times of TE polarized light in the transmissivity of optical thin film number of plies TM polarized light greater than more than 8 layers the time, optimum value in the present embodiment is 15 layers.Therefore, first optical thin film 18 that is piled up alternately through multilayer by TM polarized light and TE polarized light and the transmission difference of second optical thin film, 16 great disparities have illustrated that once more polarization element of the present invention has the characteristic of screening specific polarization light.
Except the embodiment of first embodiment direct stacked multilayer first optical thin film 18 in disclosed surface and second optical thin film 16 at light source 12, consider that light source 12 may have high sensitive to aqueous vapor or oxygen, can between light source and first optical thin film and second optical thin film, add protective materials again, to block aqueous vapor or oxygen enters light source, prolong the life-span of polarized light transmitting element of the present invention.Please refer to Fig. 8, it is the synoptic diagram according to a polarized light transmitting element 26 shown in the second embodiment of the present invention, to continue to use the components identical symbol with the aforementioned first embodiment components identical, the difference of the present embodiment and first embodiment is: light source 12 and 18 of first optical thin films also are provided with encapsulating structure 29 and are located at polarized light transmitting element 26 another reflection horizon 28 with respect to light source 12 exit facets.Being located at encapsulating structure 29 between light source 12 and these optical thin films can select for use resin, monox or other can completely cut off the material of aqueous vapor and oxygen, be enclosed in the outside of light source 12, with protection light source 12, and the difference between the refractive index of the refractive index of the material of encapsulating structure 29 and this first optical thin film 18 is less than 1; The interface of the encapsulating structure 29 and first optical thin film 18 is not limited to the horizontal section shown in the figure in addition, also can cooperate these optical thin films to make the zigzag or the cross section of other form.In addition, when selecting the material of encapsulating structure 29, must consider the refractive index of material itself simultaneously, preferably be chosen as difference between the refractive index of the refractive index of encapsulating structure 29 materials and this source material less than 1.As for the reflection horizon 26 of being located at polarized light transmitting element 26 bottoms, then can select silver (Ag), aluminium (Al), gold metal or the good material of other reflecting effect such as (Au) for use, its purpose is to make from the TE polarized light of first optical thin film 18 or 16 reflections of second optical thin film can upset hybrid light source for TM polarized light and TE polarized light again after reflection, once more through the screening of first optical thin film 18 and second optical thin film, to increase the light source utilization factor of light source 12.
Fig. 9 is that the TE polarized light is through refractive index n
1=4.01 first optical thin film 18 and the refractive index n
2During=1.5 second optical thin film 16, the graph of a relation of the thickness of these optical thin films, the size of these geometric units and photonic bandgap, wherein X-axis is d
1/ a, Y-axis is d
2/ a, the Z axle is h/a, and on behalf of the TE polarized light, each round dot have corresponding photonic bandgap, wherein d among the figure
1, d
2Be respectively the thickness of first optical thin film 18 and second optical thin film 16, h is the height h of first geometric units 19
1Height h with second geometric units 17
2Sum (h=h
1+ h
2), and first geometric units 16 that first optical thin film 18 is comprised has identical width a with second geometric units 17 that second optical thin film 16 is comprised, i.e. a
1=a
2=a.As shown in Figure 9, under specific structural condition, the TE polarized light has corresponding photonic bandgap, therefore can't penetrate these optical thin films, and under this structural condition, the TM polarized light is not had a photonic bandgap of correspondence, therefore can penetrate these optical thin films easily, and then reach the purpose of separating TM and TE polarized light.In addition, Figure 10 is the embodiment of Fig. 9, and it illustrates when h=0.25a, d
1/ a and d
2The graph of a relation of/a.Wherein, h is the height h of first geometric units 19
1Height h with second geometric units 17
2Sum (is h=h
1+ h
2).
According to the result of Fig. 9, Figure 10, when making polarized light transmitting element 10, as reaching the purpose of above-mentioned separation polarized light, the thickness d of first optical thin film 18
1Width a with first geometric units 17
1Between preferred ratio between 0.2-2, i.e. 0.2≤d
1/ a
1≤ 2; The thickness d of second optical thin film 16
2Width a with second geometric units 17
2Between preferred ratio also be between 0.2-2, i.e. 0.2≤d
2/ a
2≤ 2; Preferred ratio is also at 0.2～2 between h and a, i.e. 0.2≤h/a≤2.
Because polarization element of the present invention has the function that the TM polarized light can directly be provided, after the encapsulation of appropriateness and linking other optical element or Circuits System, on using, can be used as the backlight module of LCD or other display element.Backlight module with red bluish-green three looks is an example, and according to the result after calculating, with the blue-ray LED of the wavelength X=470nm that can send, the structural parameters of first optical thin film, second optical thin film, first geometric units, second geometric units are set in a
1=a
2=200nm, d
1=90nm, d
2=76nm and h
1=h
2=140nm can produce the polarized light transmitting element of blue-light source; If the size of first optical thin film, second optical thin film, first geometric units, second geometric units is set at a
1=a
2=225nm, d
1=101nm, d
2=86nm and h
1=h
2=158nm, the green light LED of wavelength available λ=530nm is then produced the polarized light transmitting element of green light source; If the size of first optical thin film, second optical thin film, first geometric units, second geometric units is set in a
1=a
2=268nm, d
1=121nm, d
2=102nm is with h
1=h
2=188nm, the red-light LED of wavelength available λ=630nm is then produced the polarized light transmitting element of red light source.The combination of the polarized light transmitting element of these red light sources, green light source and blue-light source can be applicable to backlight module, please refer to Figure 11, and it illustrates the structural representation that is combined as the LCD of backlight module with polarized light transmitting element of the present invention.LCD 30 comprises backlight module 32, liquid crystal panel 34 and goes up polaroid 36, and wherein liquid crystal panel 34 is positioned at the exiting surface of this backlight module 32, the opposite side that 36 of last polaroids are located at liquid crystal panel 34 with respect to backlight module 32.It is known that liquid crystal panel 34 reaches the thin portion structure that goes up polaroid 36, do not repeat them here.The backlight module 32 of LCD 32 comprises the polarized light transmitting element of different colours such as a plurality of redness (R) polarized light transmitting element 38, a plurality of green (G) polarized light transmitting element 40 and a plurality of blueness (B) polarized light transmitting element 42, and per four polarized light transmitting elements (G, R, G, B) constitute a unit, the back light array that is arranged in mosaic (mosaic) formula adjacent one another are is in order to provide the polarized light of specific wavelength.Because these polarized light transmitting elements possess these optical thin films separately, except can directly providing the advantage of TM polarized light, those optical thin films are because of having jagged cross section, can make the light that is incident to these optical thin films not be subjected to the restriction of critical angle, improve the ratio of light, thereby promote the light source utilization factor from those optical thin film outgoing.Compare with known LCD, when LCD 30 of the present invention uses these polarizers of the present invention to originate as the polarized light of backlight module 32, because these polarizers can directly provide liquid crystal panel 34 required polarized light, so LCD 30 of the present invention can be omitted known LCD essential polaroid and brightness enhancement film down, can provide the image display effect of high briliancy, high color reprodubility.In addition, the disclosed embodiment of the present invention is an example with the back light array of red bluish-green three looks, the back light array of other combination also is applicable to the present invention, for example: red, blue, green and white (white, W) the back light array (RGB W pattern) that closes of four colour cells; And the arrangement mode of back light array also is not limited to and constitutes a unit with per four polarized light transmitting elements (G, R, G, B) or (R, G, B, W) shown in the aforementioned implementation column, the visual product needed of user and change its permutation and combination, for example, also can constitute a unit in another embodiment, and also be not limited to arrange in the mode of mosaic by the polarized light transmitting element of three or other quantity.
In sum, polarized light transmitting element provided by the present invention, the light that can cooperate different wave length, design different optical thin films, so that the polarized light of specific polarization characteristic and high briliancy directly to be provided, for other the product that needs polarized light, as projector, electronic products such as LCD use, the kind of polarized light is not limited to the TM polarized light shown in these embodiment, change first optical thin film, second optical thin film, first geometric units, the second geometric units material or structural parameters can determine the polarized light kind passed through, for example, the TE polarized light that direction of an electric field is vertical with the light application direction, required to meet various photovoltaic.In addition, the light source of generation light is not limited to the LED element in the foregoing description, but the device of other active illuminating or mechanism also are applicable to the present invention as Organic Light Emitting Diode (OLED), laser diode (LD).
The above only is the preferred embodiments of the present invention, and all claim is made according to the present invention variation that is equal to and modification all belong to scope of the present invention.
Claims (10)
1, a kind of polarized light transmitting element that polarized light is provided, it comprises:
Light source;
Be located at first optical thin film of this light source exit facet, the thickness of this first optical thin film is d1, and this first optical thin film comprises first geometric units that a plurality of width are a1, and wherein said a plurality of first geometric units are along the first direction repeated arrangement, and 0.2≤d1/a1≤2; And
Cover second optical thin film of this first optical thin film, the thickness of this second optical thin film is d2, and this second optical thin film comprises second geometric units that a plurality of width are a2, and wherein said a plurality of second geometric units are along this first direction repeated arrangement, and 0.2≤d2/a2≤2.
2, polarized light transmitting element as claimed in claim 1, wherein, the width a1 of this first geometric units equals the width a2 of this second geometric units.
3, polarized light transmitting element as claimed in claim 1 also comprises this first optical thin film of n layer and this second optical thin film of m layer, is stacked in regular turn on this light source, and wherein n, m are the integer more than or equal to 4.
4, polarized light transmitting element as claimed in claim 3, wherein, the optimum value of n or m is 15.
5, polarized light transmitting element as claimed in claim 1, wherein, the refractive index of this first optical thin film or this second optical thin film is greater than 2.
6, polarized light transmitting element as claimed in claim 1 also comprises the encapsulating structure that is positioned between this light source and this first optical thin film.
7, polarized light transmitting element as claimed in claim 6, wherein, the difference between the refractive index of the refractive index of this encapsulating structure and this first optical thin film is less than 1.
8, polarized light transmitting element as claimed in claim 6, wherein, the difference between the refractive index of this encapsulating structure and the refractive index of this light source is less than 1.
9, a kind of LCD comprises:
Liquid crystal panel;
Be located at the last polaroid of this liquid crystal panel one side; And
Be located at the backlight module of this liquid crystal panel opposite side, this backlight module comprises:
A plurality of polarized luminescences, and each this polarized light transmitting element comprises:
Light source;
Be located at first optical thin film of this light source layer exit facet, the thickness of this first optical thin film is d1, and this first optical thin film comprises first geometric units that a plurality of width are a1, and wherein said a plurality of first geometric units are along the first direction repeated arrangement, and 0.2≤d1/a1≤2; And
Cover second optical thin film of this first optical thin film, the thickness of this second optical thin film is d2, and this second optical thin film comprises second geometric units that a plurality of width are a2, and wherein said a plurality of second geometric units are along this first direction repeated arrangement, and 0.2≤d2/a2≤2.
10, LCD as claimed in claim 9, wherein, this light source can be redness, green, blueness or white light source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101366994A CN101349827A (en) | 2007-07-20 | 2007-07-20 | Polarized light transmitting element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101366994A CN101349827A (en) | 2007-07-20 | 2007-07-20 | Polarized light transmitting element |
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| Publication Number | Publication Date |
|---|---|
| CN101349827A true CN101349827A (en) | 2009-01-21 |
Family
ID=40268667
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007101366994A Pending CN101349827A (en) | 2007-07-20 | 2007-07-20 | Polarized light transmitting element |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017219419A1 (en) * | 2016-06-20 | 2017-12-28 | 深圳市华星光电技术有限公司 | Liquid crystal display device |
| CN111257982A (en) * | 2020-01-20 | 2020-06-09 | 江苏师范大学 | Monocrystalline silicon grating guided-mode resonance filter |
-
2007
- 2007-07-20 CN CNA2007101366994A patent/CN101349827A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017219419A1 (en) * | 2016-06-20 | 2017-12-28 | 深圳市华星光电技术有限公司 | Liquid crystal display device |
| CN111257982A (en) * | 2020-01-20 | 2020-06-09 | 江苏师范大学 | Monocrystalline silicon grating guided-mode resonance filter |
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