CN101476684B - Backlight Module and LCD Display - Google Patents
Backlight Module and LCD Display Download PDFInfo
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- CN101476684B CN101476684B CN2009100040830A CN200910004083A CN101476684B CN 101476684 B CN101476684 B CN 101476684B CN 2009100040830 A CN2009100040830 A CN 2009100040830A CN 200910004083 A CN200910004083 A CN 200910004083A CN 101476684 B CN101476684 B CN 101476684B
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Abstract
A backlight module and a liquid crystal display including the backlight module are provided. The backlight module is provided with a reflecting base, a fluorescent material layer is arranged on the reflecting base, and a plurality of blue light emitting diode assemblies are arranged above the reflecting base and the fluorescent material layer and emit first light beams. The optical film is arranged above the reflecting base, the fluorescent material layer and the blue light LED component and used for allowing P polarized light of the first light beam to penetrate through and reflecting S polarized light of the first light beam to the fluorescent material layer so as to excite the fluorescent material layer to generate a second light beam with different wavelength from the first light beam. When the second light beam is reflected to the optical diaphragm through the reflection base, the second light beam can penetrate through the optical diaphragm and is mixed with the first light beam to generate white light.
Description
[technical field]
The invention relates to a kind of Backlight module and liquid crystal display, particularly relevant for a kind of Backlight module and liquid crystal display that promotes the photon utilization factor.
[background technology]
LCD (Liquid Crystal Display; LCD) be one of present most widely used display technique.Include many optical modules in the assembly of composition LCD, for example: Polarizer (Polarizer) and colored filter (Color filter) etc.Generally speaking, Polarizer can cause about 50% go into the light quantity loss, and the colorized optical filtering sector-meeting reproduce into about 60% go into the light quantity loss.Therefore, after light passes through these assemblies, only be left about 20% the light quantity of going into, so can cause the loss of backlight module or LCD brightness.
Since the new line of environmental consciousness, white light emitting diode (Light-Emitting Diode; LED) have advantages such as volume is little, briliancy is high, no mercury, be used in gradually on the backlight liquid crystal display module.White light emitting diode utilizes blue light-emitting diode crystal grain, adds the packing colloid that contains green and red fluorescence powder; Wherein, this packing colloid reflects the blue light-emitting diode die package in the pedestal in one.When blue light-emitting diode crystal grain sent blue light, blue light can excite green and the red fluorescence powder in the packing colloid, and produced ruddiness and green glow; Wherein, the ruddiness and the green glow of a part can directly reflex to blue light-emitting diode crystal grain, or after reflexing to the reflection pedestal earlier, reflex to blue light-emitting diode crystal grain again, and sponged by blue light-emitting diode crystal grain; And ruddiness of another part and green glow, then can with the blue light that penetrated packing colloid, together by Polarizer and be mixed into white light.As mentioned above, the light quantity that this Polarizer also can loss about 50%.As shown in Table 1, suppose that the blue photons number that is initially sent by blue light-emitting diode crystal grain is 100, behind green and red fluorescence powder, the blue photons number is kept to 50, but ruddiness that inspires or green glow photon number are 40, and the blue photons number that is consumed or absorb then is 10; After passing through Polarizer again, the blue photons number is kept to 25, and ruddiness or green glow photon number are kept to 20.Therefore, when using existing backlight module or LCD, white light emitting diode approximately only can be left 45% through the utilization factor of the photon behind the Polarizer.
| Photon number | Blue light | Ruddiness or green glow |
| Initially | 100? | N/A? |
| Through behind the |
50? | 40? |
| Through behind the Polarizer | 25? | 20? |
Table one
[summary of the invention]
Because be that the photon utilization factor of the backlight module of backlight or LCD is low with the white light emitting diode, therefore, the invention provides a kind of Backlight module and liquid crystal display, it can increase the photon utilization factor of backlight, to promote the overall brightness of LCD.
According to one embodiment of the invention, backlight module of the present invention comprises: a reflection pedestal, a fluorescent material layer, a plurality of light-emitting diode component and a blooming piece.Fluorescent material layer is arranged on the reflection pedestal, and light-emitting diode component is arranged on the top of reflection pedestal and fluorescent material layer, and launches first light beam, and light-emitting diode component comprises a blue light-emitting diode.Blooming piece is arranged on the top of reflection pedestal, fluorescent material layer and light-emitting diode component, in order to allow the P polarization light of first light beam penetrate, and the S polarization light that reflects first light beam is to fluorescent material layer, produce one second light beam with the excitation fluorescent material layer, second light beam and the first light beam different wave length, and second light beam is through reflection after pedestal reflexes to blooming piece, penetrable blooming piece, and mixes the generation white light with the P polarization light of first light beam.
According to another embodiment of the present invention, first light beam comprises the light of wavelength coverage between 420 nanometers (nm) and 500 nanometers (nm), and blooming piece to the scope of S polarization reflection of light rate between 80% and 99%, and blooming piece to the scope of the penetrance of P polarization light between 60% and 99%.
According to another embodiment of the present invention, fluorescent material layer is a yellow fluorescent material layer, and S polarization light wavelength scope is between 420 nanometers (nm) and 500 nanometers (nm).
According to another embodiment of the present invention, light-emitting diode component comprises a green light LED in addition, and fluorescent material layer is a red fluorescence material layer.
According to another embodiment of the present invention, light-emitting diode component comprises green emitting phosphor in addition, and fluorescent material layer is a red fluorescence material layer.
According to another embodiment of the present invention, fluorescent material layer includes red fluorescence material and green fluorescent material.
According to another embodiment of the present invention, blooming piece comprises: a base material, a micro-prism structure, an optical material layer.Base material have the orientating reflex pedestal first surface, and and the first surface opposing second surface.Micro-prism structure is arranged on the first surface, optical material layer is formed on the second surface, optical material layer is by a plurality of first dielectric materials layers and staggered stacked the forming of a plurality of second dielectric materials layer, and the light refraction coefficient of first dielectric materials layer is greater than the light refraction coefficient of second dielectric materials layer.
According to another embodiment of the present invention, blooming piece comprises: a base material; An and optical material layer.Optical material layer is formed on the surface of base material back-reflection pedestal; Wherein, optical material layer is by a plurality of first material layers and staggered stacked the forming of a plurality of second material layer, and first material layer is for example made by poly-2,6 (ethylene naphthalate)s, and second material layer is for example made by terephthalate.
According to one embodiment of the invention, LCD of the present invention comprises: aforesaid backlight module, a Polarizer and a liquid crystal panel.Polarizer is positioned on the light direction of backlight module, and in order to allow the P polarization light of first light beam penetrate, liquid crystal panel then is disposed on the Polarizer.
Use above-mentioned Backlight module and liquid crystal display, can increase the photon utilization factor of backlight effectively, thereby promote the overall brightness of LCD significantly.
[description of drawings]
For above and other objects of the present invention, feature, advantage and embodiment can be become apparent, appended graphic being described in detail as follows:
Figure 1A is the structural representation of first embodiment of backlight module according to the present invention.
Figure 1B and Fig. 1 C are the characteristic synoptic diagram according to the blooming piece of first embodiment of the invention.
Fig. 2 A is the structural representation of second embodiment of backlight module according to the present invention.
Fig. 2 B and Fig. 2 C are the characteristic synoptic diagram according to the blooming piece of second embodiment of the invention.
Fig. 3 is the structural representation of the 3rd embodiment of backlight module according to the present invention.
Fig. 4 A is the structural representation of one embodiment of LCD according to the present invention.
Fig. 4 B is the structural representation of another embodiment of LCD according to the present invention.
Fig. 5 A is the structural representation of one embodiment of blooming piece according to the present invention.
Fig. 5 B is the structural representation of another embodiment of blooming piece according to the present invention.
[primary clustering symbol description]
60a first surface 60b second surface
61 optical material layers, 62 first material layers
64 second material layers, 66 micro-prism structures
70 optical material layers, 72 first dielectric materials layers
74 second dielectric materials layers, 80 backlight modules
82 blooming pieces, 84 fluorescent material layers
86 light-emitting diode component 86a light-emitting diode components
86b light-emitting diode component 90 liquid crystal panels
The D spacing
L
2Second light beam
L
21Second light beam
L
22Second light beam
P
1The P polarization light of first light beam
P
1rThe P polarization reflected light of first light beam
P
1tThe P polarization of first light beam penetrates light
S
1The S polarization light of first light beam
The θ pitch angle
[embodiment]
But the design of backlight module of the present invention with the blooming piece of the S polarization light of a reflect blue wave band (for example: reflection-type polarisation brightening piece) is, be seated in the light-emitting diode component top that comprises blue light-emitting diode, with reflection or partial reflection by the S polarization light of the blue light that light-emitting diode component was sent, be seated in the fluorescent powder that reflects on the pedestal by this reflected light deexcitation again, with generation ruddiness and/or green glow, and ruddiness and/or green glow become white light with the blue light that penetrated blooming piece again.
Various enforcement aspects of the present invention below are described.
First embodiment
Please refer to Figure 1A, it illustrates the structural representation of first embodiment of backlight module according to the present invention.The backlight module of present embodiment comprises: reflection pedestal 10, red fluorescence material layer 20, a plurality of light-emitting diode component 30 and blooming piece 40.
Red fluorescence material layer 20 is arranged on the surface of reflection lower surface of pedestal 10 or side, and light-emitting diode component 30 is arranged on the top of reflection pedestal 10 and red fluorescence material layer 20, and can launch the first light beam P
1+ S
1Wherein, light-emitting diode component 30 is made up of blue light-emitting diode and green light LED, or blue light-emitting diode and green emitting phosphor form, and uses producing blue light and green glow, the first light beam P
1+ S
1Wavelength coverage between 420 nanometers (nm) and 580 nanometers (nm).Blooming piece 40 is arranged on the top of reflection pedestal 10, red fluorescence material layer 20 and light-emitting diode component 30.
Light-emitting diode component 30 has a space D apart with red fluorescence material layer 20, and the scope of space D is between 0.01 millimeter (mm) and 3 millimeters (mm), so that red fluorescence material layer 20 can receive the first light beam P that is reflected by blooming piece 40 effectively
1+ S
1In S polarization light S
1, or even small part does not penetrate the first light beam P of blooming piece 40
1+ S
1In P polarization light P
1
Please refer to Figure 1B and Fig. 1 C, it illustrates the characteristic synoptic diagram according to the blooming piece 40 of first embodiment of the invention.Shown in Figure 1B, transverse axis is represented the S polarization light wavelength that light-emitting diode component 30 is launched, and unit is nanometer (nm), and the longitudinal axis is the transmitted intensity of S polarization light for this reason then, and it is the zero dimension relative value.But the S polarization light S of blooming piece 40 reflected wavelength range between 420 nanometers (nm) and 580 nanometers (nm)
1, but can allow the S polarization light of remaining wavelength coverage pass through; Shown in Fig. 1 C, transverse axis is represented the P polarization light wavelength that light-emitting diode component 30 is launched, and unit is nanometer (nm), and the longitudinal axis is the transmitted intensity of P polarization light for this reason then, and it is a zero dimension relative value.Blooming piece 40 almost can allow the P polarization light of all wavelengths scope penetrate.At the first light beam P of wavelength coverage between 420 nanometers (nm) and 580 nanometers (nm)
1+ S
1, 40 couples first light beam P of blooming piece
1+ S
1S polarization light S
1The scope of reflectivity between 80% and 99%, and 40 couples first light beam P of blooming piece
1+ S
1P polarization light P
1The scope of penetrance between 60% and 99%.
Therefore, shown in Figure 1A, blooming piece 40 can allow the first light beam P
1+ S
1Part or all of P polarization light P
1Penetrate, and reflect the first light beam P
1+ S
1Part or all of S polarization light S
1To red fluorescence material layer 20, produce one second light beam (ruddiness) L with excitated red fluorescent material layer 20
2, second light beam (ruddiness) L
2With first light beam (blue light and green glow) P
1+ S
1The wavelength difference.As second light beam (ruddiness) L
2Part is emitted to blooming piece 40 or part again through reflection after pedestal 10 reflexes to blooming piece 40 by red fluorescence material layer 20, penetrable blooming piece 40, and with the P polarization light P of first light beam (blue light and green glow)
1Mix and produce white light.
Second embodiment
Please refer to Fig. 2 A, it illustrates the structural representation of second embodiment of backlight module according to the present invention.The backlight module of present embodiment comprises: reflection pedestal 10, the fluorescent material layer 22 that includes red fluorescence material and green fluorescent material, a plurality of light-emitting diode component 32 and blooming piece 42.
Please refer to Fig. 2 B and Fig. 2 C, it illustrates the characteristic synoptic diagram according to the blooming piece 42 of second embodiment of the invention.Shown in Fig. 2 B, transverse axis is represented the S polarization light wavelength that light-emitting diode component 32 is launched, and unit is nanometer (nm), and the longitudinal axis is the transmitted intensity of S polarization light for this reason then, and it is the zero dimension relative value.But the S polarization light S of blooming piece 42 reflected wavelength range between 420 nanometers (nm) and 500 nanometers (nm)
1, but can allow the S polarization light of remaining wavelength coverage pass through; Shown in Fig. 2 C, transverse axis is represented the P polarization light wavelength that light-emitting diode component 32 is launched, and unit is a nanometer, and the longitudinal axis is the transmitted intensity of P polarization light for this reason then, and it is a zero dimension relative value.Blooming piece 42 almost can allow the P polarization light of all wavelengths scope penetrate.At the first light beam P of wavelength coverage between 420 nanometers (nm) and 500 nanometers (nm)
1+ S
1, 42 couples first light beam P of blooming piece
1+ S
1S polarization light S
1The scope of reflectivity between 80% and 99%, and 42 couples first light beam P of blooming piece
1+ S
1P polarization light P
1The scope of penetrance between 60% and 99%.
Therefore, shown in Fig. 2 A, blooming piece 42 can allow the first light beam P
1+ S
1Part or all of P polarization light P
1Penetrate, and reflect the first light beam P
1+ S
1Part or all of S polarization light S
1To fluorescent material layer 22, produce one second light beam (ruddiness and green glow) L with excitation fluorescent material layer (redness and green fluorescent material) 22
2, second light beam (ruddiness and green glow) L
2With first light beam (blue light) P
1+ S
1The wavelength difference.As second light beam (ruddiness and green glow) L
2Part is emitted to blooming piece 42 or part again through reflection after pedestal 10 reflexes to blooming piece 42 by fluorescent material layer 22, penetrable blooming piece 42, and with the P polarization light P of first light beam (blue light)
1Mix and produce white light.
The 3rd embodiment
Please refer to Fig. 3, it illustrates the structural representation of the 3rd embodiment of backlight module according to the present invention.Present embodiment replaces the fluorescent material layer (redness and green fluorescent material) 22 of second embodiment of the invention, the S polarization light S that is reflected with yellow fluorescent material layer 24
1Wavelength coverage, also between 420 nanometers (nm) and 500 nanometers (nm), and the arrangement of other assembly is identical with second embodiment with characteristic, then please refer to second embodiment of the invention, repeats no more.
The first light beam P of first, second and the 3rd embodiment of the present invention
1+ S
1All include blue light, the strongest wavelength coverage of its intensity is between 440 nanometers (nm) and 490 nanometers (nm).
Various embodiments of the present invention below are described, its adjustment or reach the white balance of LCD or the technological means of white balance specification.
Method one
Please refer to Fig. 4 A, it illustrates the structural representation of one embodiment of LCD according to the present invention.The LCD of present embodiment comprises backlight module 80, Polarizer 50 and liquid crystal panel 90; Wherein, fluorescent material layer 84, light-emitting diode component 86 and the blooming piece 82 of composition backlight module 80 can be arbitrary embodiment of aforesaid first embodiment, second embodiment and the 3rd embodiment.Liquid crystal panel 90 is disposed on the Polarizer 50, and Polarizer 50 is positioned on the light direction of backlight module 80, and Polarizer 50 can allow major part penetrate the first light beam P of blooming piece 82
1+ S
1P polarization light P
1In the P polarization penetrate light P
1tBy, its transmission loss rate is less than 5%.Polarizer 50 also can allow part second light beam (ruddiness, ruddiness and green glow or gold-tinted) L
21And L
22By, its transmission loss rate is about 50%.The second light beam L
21By the first light beam P
1+ S
1P polarization light P
1In a small amount of P polarization reflected light P
1rExcitation fluorescent material layer 84 and producing, and P polarization reflected light P
1rThe first light beam P then for being reflected by blooming piece 82
1+ S
1A small amount of P polarization light of part.The second light beam L
22By the first light beam P
1+ S
1S polarization light S
184 generation of excitation fluorescent material layer, and S polarization light S
1The first light beam P then for being reflected by blooming piece 82
1+ S
1S polarization light.
For reaching the white balance of LCD, the ratio that present embodiment is reflected by blooming piece 82 by control P polarization light, i.e. P
1r/ (P
1r+ P
1t), adjust the second light beam L that excitation fluorescent material layer 84 is produced
21And L
22Intensity.For example: if P
1r/ (P
1r+ P
1t) lower, show that the P polarization penetrates light P
1tThe ratio of passing through is higher, so that color is blue partially, colour temperature is higher.
Method two
Please refer to Fig. 4 B, it illustrates the structural representation of another embodiment of LCD according to the present invention.The exiting surface of the light-emitting diode component 86 of method one is all towards blooming piece 82, and the exiting surface of the light-emitting diode component 86a of the part of present embodiment is towards blooming piece 82, and the exiting surface of the light-emitting diode component 86b of another part is then towards fluorescent material layer 84.In the present embodiment, when the number of light-emitting diode component 86b the more, directly the first light beam L1 of excitation fluorescent material layer 84 is just stronger, thereby produces stronger second light beam (ruddiness, ruddiness and green glow or gold-tinted) L
21And L
22Therefore, this method can be reached the white balance of LCD by adjusting the number ratio of light-emitting diode component 82a and light-emitting diode component 82b.The light-emitting diode component 82a of present embodiment and the number proportional range of light-emitting diode component 82b are preferably between 2: 1 and 99: 1.Wherein, if light-emitting diode component 82 add up to 300, the number of 2: 1 light-emitting diode component 82b of ratio is 100, the number of 99: 1 light-emitting diode component 82b of ratio is 3, so the second light beam L that the former produced
21And L
22Stronger, so that the former color is red partially or green partially, colour temperature is lower.
The effect of various embodiments of the present invention below is described.
As shown in Table 2, table two only reflects the first light beam P for the of the present invention second and the 3rd embodiment
1+ S
1S polarization light S
1The result.Suppose that the blue photons number that is initially sent by light-emitting diode component 32 is 100, through behind the blooming piece, the blue photons number that passes blooming piece 42 is 47, and the blue photons number that is reflected by blooming piece 42 is 47; Behind the blue-light excited fluorescent material layer 22,24 that is reflected by blooming piece 42, it is 40 that ruddiness that is produced and green glow (or gold-tinted) photon number adds up; If pass through Polarizer again, the blue photons number but only can slightly be kept to 45, and the total photon number of ruddiness and green glow (or gold-tinted) is kept to 20.Therefore, when using various embodiments of the present invention, the utilization factor of the photon behind the process Polarizer can reach 65%.
| Photon number | Blue light | Ruddiness and green glow |
| Initially | 100? | N/A? |
| Through behind the blooming piece | 47 (passing); 47 (reflections) | N/A? |
| Through behind the fluorescent powder | 47? | 40? |
| Through behind the Polarizer | 45? | 20? |
Table two
As shown in Table 3, table three is the of the present invention second and the 3rd embodiment and reflects 25% the first light beam P
1+ S
1P polarization light P
1(being application process one) adjusts the result of white balance.Suppose that the blue photons number that is initially sent by light-emitting diode component 32 is 100, through behind the blooming piece 42, the blue photons number that passes blooming piece 42 is 35, and the blue photons number that is reflected by blooming piece 42 is 59; Ruddiness and green glow (or gold-tinted) photon number that blue-light excited fluorescent material layer 22,24 backs of being reflected by blooming piece 42 are produced are 52; After passing through Polarizer 50 again, the blue photons number can slightly be kept to 33, and the total photon number of ruddiness and green glow (or gold-tinted) then is kept to 26.Therefore, when using embodiments of the invention, the utilization factor of the photon behind the process Polarizer 50 can reach 59%.
| Photon number | Blue light | Ruddiness and green glow |
| Initially | 100? | N/A? |
| Through behind the blooming piece | 35 (passing); 59 (reflections) | N/A? |
[0073]?
| Through behind the fluorescent powder | 35? | 52? |
| Through behind the Polarizer | 33? | 26? |
Table three
The production method of the blooming piece 40,42 of various embodiments of the present invention below is described.
Please refer to Fig. 5 A, it illustrates the structural representation of one embodiment of blooming piece 40,42,82 according to the present invention.The blooming piece 40,42,82 of present embodiment is made up of base material 60, micro-prism structure 66 and optical material layer 70.Base material 60 have orientating reflex pedestal 10 first surface 60a and with first surface 60a opposing second surface 60b.
Micro-prism structure 66 is arranged on the first surface 60a, its prism height scope is between 0.01 millimeter (mm) and 3 millimeters (mm), and having tiltangle, its scope is incident to the angle of blooming piece 40,42,82 in order to control light between 10 ° and 65 °.Optical material layer 70 is formed on the second surface 60b, and is that the present invention does not limit the stacking order of first dielectric materials layer 72 and second dielectric materials layer 74 by a plurality of first dielectric materials layers 72 and a plurality of second dielectric materials layer, 74 staggered stacked forming; Wherein, the light refraction coefficient of first dielectric materials layer 72 is greater than the light refraction coefficient of this second dielectric materials layer.
First dielectric materials layer 72 can be by for example: magnesium oxide (MgO), zinc paste (ZnO), silicon nitride (SiN
x), silicon oxynitride (SiON
x), titanium dioxide (TiO
2), zinc selenide (ZnSe), zinc sulphide (ZnS), tantalum oxide (TaO
x), aluminium oxide (Al
2O
3), tellurium oxide (TeO
x), indium tin oxide (ITO) or its composition be made, its thickness range is between 5 nanometers (nm) and 90 nanometers (nm).
Second dielectric materials layer 74 can be by for example: monox (Si
2O
3), magnesium fluoride (MgF
2), monox (SiO
2), aluminium oxide (Al
2O
3), tellurium oxide (TeO
x), lithium fluoride (LiF), silicon oxynitride (SiON
x) or its composition made, its thickness range is between 10 nanometers (nm) and 130 nanometers (nm).
The blooming piece 40,42,82 of present embodiment utilizes the incident angle of incident light near Brewster angle (Brewster angle), has the characteristic that the reflection of S polarization light, P polarization light are penetrated, and reaches the purpose of separating two polarization light; And utilize to adjust the number of plies of two dielectric materials layers 72,74 and the pitch angle of micro-prism structure 66, control S polarization light and P polarization light penetrating and the reflection ratio separately; And the thickness that utilizes the dielectric materials layer 72,74 of adjusting two-supremes low optical refraction coefficient is adjusted the wave band of polarization.
Please refer to Fig. 5 B, it illustrates the structural representation of another embodiment of blooming piece 40,42,82 according to the present invention.The blooming piece 40,42,82 of present embodiment is made up of base material 60 and optical material layer 61.Optical material layer 61 is formed on the second surface 60b of base material 60 back-reflection pedestals 10.Optical material layer 61 is by a plurality of first material layers 62 and a plurality of second material layer, 64 staggered stacked forming, and the present invention does not limit the stacking order of first material layer 62 and second material layer 64.
By the embodiment of the invention described above as can be known, using advantage of the present invention is: can increase the photon utilization factor of backlight, thereby promote the overall brightness of LCD significantly.
Though the present invention discloses as above with embodiment; right its is not in order to limiting the present invention, anyly has the knack of this skill person, without departing from the spirit and scope of the present invention; when can being used for a variety of modifications and variations, so protection scope of the present invention is as the criterion when looking accompanying the claim person of defining.
Claims (12)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100040830A CN101476684B (en) | 2009-02-09 | 2009-02-09 | Backlight Module and LCD Display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100040830A CN101476684B (en) | 2009-02-09 | 2009-02-09 | Backlight Module and LCD Display |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101476684A CN101476684A (en) | 2009-07-08 |
| CN101476684B true CN101476684B (en) | 2010-12-01 |
Family
ID=40837435
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100040830A Active CN101476684B (en) | 2009-02-09 | 2009-02-09 | Backlight Module and LCD Display |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101476684B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102969428B (en) * | 2011-08-29 | 2015-08-05 | 苏忠杰 | Polarization white light emitting diode |
| CN103115322A (en) * | 2011-11-16 | 2013-05-22 | 苏州通亮照明科技有限公司 | Diffusion member for backlight module and backlight module adopting the same |
| CN106195754B (en) * | 2015-05-04 | 2019-12-31 | 中强光电股份有限公司 | Backlight module |
| CN114815394B (en) * | 2018-09-06 | 2025-03-14 | 群创光电股份有限公司 | Display device |
| CN110673391A (en) * | 2019-09-12 | 2020-01-10 | 武汉华星光电技术有限公司 | Backlight module |
| WO2021248375A1 (en) * | 2020-06-10 | 2021-12-16 | 重庆康佳光电技术研究院有限公司 | Display back plate and manufacturing method therefor |
-
2009
- 2009-02-09 CN CN2009100040830A patent/CN101476684B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN101476684A (en) | 2009-07-08 |
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