CN203549599U - Backlight module and liquid crystal display device - Google Patents
Backlight module and liquid crystal display device Download PDFInfo
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- CN203549599U CN203549599U CN201320746894.XU CN201320746894U CN203549599U CN 203549599 U CN203549599 U CN 203549599U CN 201320746894 U CN201320746894 U CN 201320746894U CN 203549599 U CN203549599 U CN 203549599U
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- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 85
- 239000010408 film Substances 0.000 claims abstract description 74
- 239000000463 material Substances 0.000 claims abstract description 19
- 239000012788 optical film Substances 0.000 claims abstract description 13
- 238000007598 dipping method Methods 0.000 claims description 18
- 230000008033 biological extinction Effects 0.000 claims description 16
- 239000000758 substrate Substances 0.000 claims description 14
- 230000002745 absorbent Effects 0.000 claims description 6
- 239000002250 absorbent Substances 0.000 claims description 6
- 210000003127 knee Anatomy 0.000 claims description 3
- 230000031700 light absorption Effects 0.000 claims description 3
- 239000012780 transparent material Substances 0.000 claims description 3
- 230000010287 polarization Effects 0.000 abstract description 12
- 230000003287 optical effect Effects 0.000 abstract 3
- 238000000034 method Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000009795 derivation Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 1
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Abstract
The utility model relates to the technical field of display, and discloses a backlight module and a liquid crystal display device. The backlight module comprises a light guide plate, an optical film material arranged on the light-exiting side of the light guide plate, and an optical oriented film arranged on the light-exiting side of the optical film material. The optical oriented film comprises an orientation layer provided with a plurality of first parallel light-stopping walls, a light-transmitting area is arranged between every two adjacent first parallel light-stopping walls, and the side surface, facing the corresponding light-transmitting area, of each first light-stopping wall is the light-stopping surface. The incident angle of the light exiting from the backlight module from the optical oriented film is small on the light-entering surface of a lower polarizing film, then the polarization degree of the refracted light exiting from the light-exiting surface of the liquid crystal display device is reduced, and the possibility that an observer sees the image information when observing the liquid crystal display device with the naked eyes in the arrangement direction of the first light-stopping walls on the two sides of the liquid crystal display device is lowered. The backlight module and the liquid crystal display device can achieve peep-preventing display well.
Description
Technical field
The utility model relates to Display Technique field, particularly a kind of backlight module and liquid crystal indicator.
Background technology
In Display Technique field, the requirement of confidentiality when user shows information to liquid crystal indicator is more and more higher.
In prior art, the confidentiality of liquid crystal indicator can arrange lower polarizer by being all on the liquid crystal panel of liquid crystal indicator, and upper polarizer is integrated on a special eyeglasses and is realized.Only there is the liquid crystal indicator of lower polarizer when showing, the light of backlight passes the liquid crystal layer in liquid crystal panel after lower polarizer polarization, then through liquid crystal panel, penetrate, if not wearing when the special eyeglasses with upper polarizer is watched the liquid crystal panel of liquid crystal indicator, observer can only see all white states, cannot see effective image information, improve the confidentiality that liquid crystal indicator shows.
But, researcher finds in actual applications, observer under bore hole state from the both sides of the liquid crystal panel of liquid crystal indicator, when tilting certain angle between sight line and the exiting surface of liquid crystal panel, but can indistinctly see demonstration information, this practical application of showing to the peep-proof of liquid crystal indicator has brought very large difficulty.
Utility model content
The utility model provides a kind of backlight module and liquid crystal indicator, and the liquid crystal indicator with this backlight module can be realized peep-proof demonstration preferably.
For achieving the above object, the utility model provides following technical scheme:
A kind of backlight module, comprise LGP, be positioned at the optical film material of described LGP bright dipping side, also comprise the light oriented film that is positioned at described optical film material bright dipping side, described smooth oriented film comprises oriented layer, described oriented layer has multiple the first resistance light walls that be arranged in parallel, between two first resistance light walls of arbitrary neighborhood, have transparent area, described in each, the first resistance light wall is resistance light face towards the side of its corresponding transparent area.
The light oriented film that above-mentioned backlight module has is positioned at the bright dipping side of optical film material, the light that optical film material bright dipping side penetrates is when by light oriented film, inject in the light of each transparent area, the light that angle between the thickness direction of incident direction and light oriented film is greater than a particular value cannot pass through light oriented film under the resistance light face effect of two first resistance light walls corresponding to this transparent area, and angle between incident direction and the thickness direction of light oriented film be less than the light of this particular value can be by above-mentioned transparent area by light oriented film, and then derive backlight module; Therefore, in above-mentioned backlight module, larger by the angle between the light oriented film ejaculation light of backlight module and the exiting surface of light oriented film.
Due to realize peep-proof show liquid crystal indicator in, the exiting surface of backlight module and liquid crystal indicator are arranged between the incidence surface of the lower polarizer of backlight module one side parallel, so, by light oriented film, penetrate the light of the backlight module incidence angle on the incidence surface of lower polarizer less, and then reduced the degree of polarization of the refracted ray that liquid crystal indicator exiting surface penetrates, that reduces that observer carries out seeing when bore hole is watched image information in the both sides that are positioned at liquid crystal indicator along each above-mentioned the first resistance light wall orientation to liquid crystal indicator may.
Therefore the liquid crystal indicator that, has above-mentioned backlight module can be realized peep-proof demonstration preferably.
Preferably, in order to improve the effect of the liquid crystal indicator peep-proof demonstration with above-mentioned backlight module, described oriented layer also comprises multiple the second resistance light walls that be arranged in parallel, and described the second resistance light wall and described the first resistance light wall are arranged in a crossed manner.The setting of multiple the second resistance light walls, that can reduce that observer carries out seeing when bore hole is watched image information in the both sides that are positioned at liquid crystal indicator along each above-mentioned the second resistance light wall orientation to liquid crystal indicator may.
Preferably, in order to reduce the thickness of light oriented film, described the first resistance light wall and described the second resistance light wall are with layer preparation.
Preferably, described in each, the resistance light face of the first resistance light wall is extinction face, or reflective surface.
Preferably, when the resistance light face of described the first resistance light wall is extinction face:
Described in each, the first resistance light wall is resistance light wall prepared by light absorbent; Or
Described in each, on the side of the first resistance light wall, be provided with the light-absorption layer of being prepared by light absorbent, to form described extinction face.
Preferably, described in each the cross section of the first resistance light wall be shaped as rectangle; Or
Described in each the cross section of the first resistance light wall be shaped as triangle or trapezoidal, and point to bright dipping side direction by the light inlet side of described smooth oriented film, the width of described the first resistance light wall increases gradually.
Preferably, when the resistance light face of described the first resistance light wall is reflective surface:
Described in each, the first resistance light wall is the resistance light wall of being prepared by reflectorized material; Or
Described in each, on the side of the first resistance light wall, be provided with the reflector layer of being prepared by reflectorized material, to form described reflective surface.
Preferably, described in each the cross section of the first resistance light wall be shaped as triangle or trapezoidal, and point to bright dipping side direction by the light inlet side of described smooth oriented film, the width of described the first resistance light wall increases gradually.
Preferably, described smooth oriented film also comprises first substrate and second substrate, and described oriented layer is between described first substrate and second substrate.
Preferably, described in each, transparent area has the knee wall of being prepared by transparent material.
The utility model also provides a kind of liquid crystal indicator, comprises liquid crystal panel and backlight module, and described liquid crystal panel is provided with lower polarizer towards the one side of described backlight module, described backlight module any backlight module for providing in technique scheme.
Preferably, each described the first resistance light wall is arranged along the transverse direction of described liquid crystal panel.
Accompanying drawing explanation
A kind of structural representation of the backlight module that Fig. 1 provides for the utility model embodiment;
A kind of structural representation of the liquid crystal indicator that Fig. 2 provides for the utility model embodiment;
In the backlight module that Fig. 3 provides for the utility model embodiment, the resistance light face of the first resistance light wall is the principle schematic of corner dimension between the light that penetrates of the restriction backlight module of extinction face time oriented film and the exiting surface of light oriented film;
In the backlight module that Fig. 4 provides for the utility model embodiment, the resistance light face of the first resistance light wall is the principle schematic of corner dimension between the light that penetrates of the restriction backlight module of reflective surface time oriented film and the exiting surface of light oriented film;
Structural representation when Fig. 5 is trapezoidal for the cross section of the first resistance light wall in light oriented film in the backlight module providing in the utility model embodiment;
Structural representation when Fig. 6 has the first resistance light wall and the second resistance light wall for the light oriented film in the backlight module providing in the utility model embodiment.
The specific embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment obtaining under creative work prerequisite, all belong to the scope of the utility model protection.
In Display Technique field, the bright dipping side of liquid crystal indicator does not arrange upper polarizer, bore hole observer should observe the image showing on liquid crystal indicator in theory, but in actual use procedure, bore hole observer is from liquid crystal indicator side, when tilting certain angle between sight line and the exiting surface of liquid crystal panel, and bore hole observer can see indistinct image information.
For above-mentioned defect, the application's utility model people draws through test of many times and derivation, why bore hole observer can see the image that the liquid crystal panel of liquid crystal indicator shows in above-mentioned angle, because light reflects on two kinds of isotropic medium interfaces, during refraction, reverberation and refract light are all partial poolarized lights, in reverberation, vertical vibration is more than parallel vibrating, in refract light, parallel vibrating is more than vertical vibration, even if liquid crystal panel does not arrange upper polarizer in above-mentioned angular range, in the light that liquid crystal panel reflects, in above-mentioned angular range, also can there is the characteristic of partial polarization, can indistinctly form image, and the increase of refraction polarisation of light intensity incident angle while generally injecting lower polarizer along with light and increasing, bore hole observer's viewing location departs from the center of liquid crystal panel when far away, from the polarization intensity larger (degree of polarization P=(P ∥-P ⊥)/(P ∥+P ⊥)) of the refracted ray of liquid crystal panel outgoing, now even without polarizer also from the side bore hole see display frame.
Therefore, be to solve the above-mentioned defect of liquid crystal indicator when peep-proof shows, need reduce the degree of polarization of the refract light of liquid crystal panel outgoing, and the degree of polarization of the emergent light of reduction liquid crystal panel can the incidence angle when reducing light and inject lower polarizer be realized.
Please refer to Fig. 1, a kind of structural representation of the backlight module that Fig. 1 provides for the utility model embodiment.
As shown in Figure 1, the backlight module that the utility model embodiment provides, comprise LGP, be positioned at the optical film material of LGP bright dipping side, also comprise the light oriented film 2 that is positioned at optical film material bright dipping side, light oriented film 2 comprises oriented layer 23, oriented layer 23 has multiple the first resistance light walls 231 that be arranged in parallel, between two first resistance light walls 231 of arbitrary neighborhood, has transparent area 232, and each first resistance light wall 231 side towards its corresponding transparent area 232 is resistance light face.
Incorporated by reference to Fig. 1 with reference to figure 2, the light oriented film 2 that above-mentioned backlight module has is positioned at the bright dipping side of optical film material, , light oriented film 2 is positioned at the top layer of backlight module, the light that optical film material bright dipping side penetrates is when by light oriented film, inject in the light of each transparent area 232, the light that angle between the thickness direction of incident direction and light oriented film 23 is greater than a particular value cannot pass through light oriented film 2 under the resistance light face effect of two first resistance light walls 231 corresponding to this transparent area 232, and angle between incident direction and the thickness direction of light oriented film 2 be less than the light of this particular value can be by above-mentioned transparent area 232 by light oriented film 2, and then derivation backlight module, therefore,, in above-mentioned backlight module, by light oriented film 2, penetrate angle between the light of backlight module and the exiting surface of light oriented film 2 larger.
As shown in Figure 2, due to realize peep-proof show liquid crystal indicator in, the exiting surface of backlight module and liquid crystal indicator are arranged between the incidence surface of the lower polarizer 3 of backlight module one side parallel, so, the incidence angle of the light that penetrates backlight module by light oriented film 2 on the incidence surface of lower polarizer 3 is less, and then reduced the degree of polarization of the refracted ray that liquid crystal indicator exiting surface penetrates, reduce observer carries out seeing when bore hole is watched image information to liquid crystal indicator possibility in the both sides that are positioned at liquid crystal indicator along each above-mentioned the first resistance light wall 231 orientations.
Therefore the liquid crystal indicator that, has above-mentioned backlight module can be realized peep-proof demonstration preferably.
Please refer to Fig. 3 and Fig. 4, in the backlight module that Fig. 3 provides for the utility model embodiment, the resistance light face of the first resistance light wall is the principle schematic of corner dimension between the light that penetrates of the restriction backlight module of extinction face time oriented film and the exiting surface of light oriented film; In the backlight module that Fig. 4 provides for the utility model embodiment, the resistance light face of the first resistance light wall is the principle schematic of corner dimension between the light that penetrates of the restriction backlight module of reflective surface time oriented film and the exiting surface of light oriented film.
For ease of light oriented film 2 is described the principle that limits the incidence angle of light while injecting lower polarizer, take the resistance light face of above-mentioned the first resistance light wall, the operation principle during as extinction face and reflective surface is described in detail respectively below.
When the resistance light face of the first resistance light wall is extinction face, can be accomplished in several ways, in a kind of preferred embodiment, above-mentioned each first resistance light wall 231 can be the resistance light wall of being prepared by light absorbent, like this, the resistance light face self-assembling formation extinction face of the first resistance light wall 231; Or, in another kind of preferred embodiment, on the side of above-mentioned each the first resistance light wall 231, be provided with the light-absorption layer of being prepared by light absorbent, to form extinction face.
As shown in Figure 3, when the resistance light face of each the first resistance light wall 231 is extinction face, the shape of the cross section of each the first resistance light wall 231 can be rectangle; The first resistance light wall 231 has certain thickness, inject in the light of a transparent area 232, the light being radiated on arbitrary resistance light face all can be absorbed by resistance light face, and then can not pass through light oriented film 2, light 43 as shown in Figure 3, the light not being irradiated on resistance light face can pass through light oriented film 2, light 41 and light 42 as shown in Figure 3, the angle between the incident direction of light 41 shown in Fig. 3 and light 42 and the thickness direction of light oriented film 2 is can be by the limiting value of the light angle of this transparent area 232; Inject in the light of this transparent area 232, when the angle between the incident direction of light and the thickness direction of light oriented film 2 is greater than above-mentioned limiting value, this light just can be irradiated on the resistance light face of the first resistance light wall 231 and be absorbed by resistance light face, and then can not pass through light oriented film; And when the angle between the incident direction of light and the thickness direction of light oriented film 2 is less than above-mentioned limiting value, this light just may pass through transparent area 232, and then penetrate backlight module by light oriented film 2.
Therefore, when the resistance light face of the first resistance light wall 231 is extinction face, backlight module has larger incidence angle in the time of can making the light of ejaculation inject lower polarizer 3 by light oriented film 2, and then reduced the degree of polarization of the refracted ray that liquid crystal indicator exiting surface penetrates, that reduces that observer carries out seeing when bore hole is watched image information in the both sides that are positioned at liquid crystal indicator along each above-mentioned the first resistance light wall 231 orientations to liquid crystal indicator may.
Certainly, in order to improve the utilization rate of the light that light source in backlight module is produced, improve the light that backlight module penetrates, in a kind of preferred embodiment, the shape of the cross section of each the first resistance light wall 231 can be triangle or trapezoidal, as shown in Figure 5, structural representation when Fig. 5 is trapezoidal for the cross section of the first resistance light wall in light oriented film in the backlight module providing in the utility model embodiment, and the light inlet side by light oriented film 2 is pointed to bright dipping side direction, the width of the first resistance light wall 231 increases gradually.
When the resistance light face of each the first resistance light wall 231 is reflective surface, can obtain in several ways, in a kind of preferred embodiment, the resistance light wall of each the first resistance light wall 231 for being prepared by reflectorized material, like this, the resistance light face self-assembling formation reflective surface of each the first resistance light wall 231; Or, in another kind of preferred embodiment, on the side of each the first resistance light wall 231, can be provided with the reflector layer of being prepared by reflectorized material, to form reflective surface.
As shown in Figure 4, when the resistance light face of each the first resistance light wall 231 is reflective surface, the shape of the cross section of the first resistance light wall 231 can be triangle or trapezoidal, and points to bright dipping side direction by the light inlet side of light oriented film, and the width of the first resistance light wall increases gradually.Inject in the light of a transparent area 232, the light that angle between the thickness direction of incident direction and light oriented film 2 is greater than a particular value can be reflected back the direction towards optical film material by two resistance light faces corresponding to this transparent area 232, can not pass through light oriented film 2, as shown in Figure 4 light 47; Angle between the thickness direction of incident direction and light oriented film 2 is greater than in the light of above-mentioned particular value, and a part of light is not irradiated on resistance light face and directly by light oriented film 2, penetrates backlight module, light 44 and light 46 as shown in Figure 4; Another part light can penetrate backlight module by transparent area 232 after the reflection of resistance light face, and, due to the cross section of the first resistance light wall 231, be shaped as triangle or trapezoidal, angle between ejaculation direction and the thickness direction of light oriented film 2 of the light ejaculation light oriented film 2 appearing after the resistance light face reflection of the first resistance light wall 231 is greater than the angle of injecting between light oriented film 2, light 45 as shown in Figure 4.
Therefore, when the resistance light face of the first resistance light wall 231 is reflective surface, backlight module has larger incidence angle in the time of also can making the light of ejaculation inject lower polarizer 3 by light oriented film 2, and then reduced the degree of polarization of the refracted ray that liquid crystal indicator exiting surface penetrates, that reduces that observer carries out seeing when bore hole is watched image information in the both sides that are positioned at liquid crystal indicator along each above-mentioned the first resistance light wall 231 orientations to liquid crystal indicator may.
Please refer to Fig. 6, structural representation when Fig. 6 has the first resistance light wall and the second resistance light wall for the light oriented film in the backlight module providing in the utility model embodiment.
In a kind of preferred embodiment, in order to improve the effect of the liquid crystal indicator peep-proof demonstration with above-mentioned backlight module, in the light oriented film 2 of above-mentioned backlight module, oriented layer 23 also comprises that multiple the second resistance light wall 233, the second resistance light walls 233 and the first resistance light walls 231 that be arranged in parallel are arranged in a crossed manner.Multiple the first resistance light walls 231 can prevent that the both sides that bore hole observer is positioned at liquid crystal panel in a direction from seeing the image on liquid crystal panel, and multiple the second resistance light walls 233 can prevent that the both sides that bore hole observer is positioned at liquid crystal panel in b direction from seeing the image on liquid crystal panel, what therefore, the setting of multiple the second resistance light walls 233 can reduce that observer carries out seeing when bore hole is watched image information in the both sides that are positioned at liquid crystal indicator along the orientation b of each above-mentioned the second resistance light wall 233 to liquid crystal indicator may.
In a kind of preferred embodiment, in order to reduce the thickness of light oriented film 2, the first resistance light wall 231 and the second resistance light wall 233 are with layer preparation.
Certainly, resistance light face of each the second resistance light wall 233 can be extinction face, can be also reflective surface, and its principle, as above-mentioned description when the first resistance light wall 231 is extinction face or reflective surface, repeats no more here.
Certainly, please continue to refer to Fig. 1, in order to improve the stability of light oriented film 2 structures, light oriented film 2 also comprises first substrate 21 and second substrate 22, and oriented layer 23 is between first substrate 21 and second substrate 22.
In another kind of preferred embodiment, in order further to improve the stability of light oriented film 2 structures, each transparent area 232 has the knee wall of being prepared by transparent material.
Please refer to Fig. 2, the utility model also provides a kind of liquid crystal indicator, this liquid crystal indicator comprises liquid crystal panel 4 and backlight module, and liquid crystal panel 4 is provided with lower polarizer 3 towards the one side of backlight module, backlight module any backlight module for providing in technique scheme.
Have in the liquid crystal indicator of above-mentioned backlight module, the bright dipping side of liquid crystal panel does not arrange upper polarizer, the incidence angle of the light penetrating by the light oriented film 2 in backlight module when injecting lower polarizer 3 is larger, and then reduced the degree of polarization of the light that liquid crystal panel 4 reflects, only have the special eyeglasses 5 that is provided with polarizer by wearing just can watch the image on liquid crystal panel 4, can realize better peep-proof and show.
Particularly, each the first resistance light wall 232 in the light oriented film 2 of backlight module is arranged along the transverse direction of liquid crystal panel 4.
Obviously, those skilled in the art can carry out various changes and modification and not depart from spirit and scope of the present utility model the utility model embodiment.Like this, if within of the present utility model these are revised and modification belongs to the scope of the utility model claim and equivalent technologies thereof, the utility model is also intended to comprise these changes and modification interior.
Claims (12)
1. a backlight module, comprise LGP, be positioned at the optical film material of described LGP bright dipping side, it is characterized in that, also comprise the light oriented film that is positioned at described optical film material bright dipping side, described smooth oriented film comprises oriented layer, described oriented layer has multiple the first resistance light walls that be arranged in parallel, between two first resistance light walls of arbitrary neighborhood, has transparent area, and described in each, the first resistance light wall is resistance light face towards the side of its corresponding transparent area.
2. backlight module according to claim 1, is characterized in that, described oriented layer also comprises multiple the second resistance light walls that be arranged in parallel, and described the second resistance light wall and described the first resistance light wall are arranged in a crossed manner.
3. backlight module according to claim 2, is characterized in that, described the first resistance light wall and described the second resistance light wall are with layer preparation.
4. backlight module according to claim 1, is characterized in that, described in each, the resistance light face of the first resistance light wall is extinction face, or reflective surface.
5. backlight module according to claim 4, is characterized in that, when the resistance light face of described the first resistance light wall is extinction face:
Described in each, the first resistance light wall is resistance light wall prepared by light absorbent; Or
Described in each, on the side of the first resistance light wall, be provided with the light-absorption layer of being prepared by light absorbent, to form described extinction face.
6. backlight module according to claim 5, is characterized in that, described in each, the cross section of the first resistance light wall is shaped as rectangle; Or
Described in each the cross section of the first resistance light wall be shaped as triangle or trapezoidal, and point to bright dipping side direction by the light inlet side of described smooth oriented film, the width of described the first resistance light wall increases gradually.
7. backlight module according to claim 4, is characterized in that, when the resistance light face of described the first resistance light wall is reflective surface:
Described in each, the first resistance light wall is the resistance light wall of being prepared by reflectorized material; Or
Described in each, on the side of the first resistance light wall, be provided with the reflector layer of being prepared by reflectorized material, to form described reflective surface.
8. backlight module according to claim 7, it is characterized in that, described in each the cross section of the first resistance light wall be shaped as triangle or trapezoidal, and point to bright dipping side direction by the light inlet side of described smooth oriented film, the width of described the first resistance light wall increases gradually.
9. according to the backlight module described in claim 1～8 any one, it is characterized in that, described smooth oriented film also comprises first substrate and second substrate, and described oriented layer is between described first substrate and second substrate.
10. backlight module according to claim 9, is characterized in that, described in each, transparent area has the knee wall of being prepared by transparent material.
11. 1 kinds of liquid crystal indicators, comprise liquid crystal panel and backlight module, and described liquid crystal panel is provided with lower polarizer towards the one side of described backlight module, it is characterized in that, described backlight module is the backlight module described in claim 1～10 any one.
12. liquid crystal indicators according to claim 11, is characterized in that, each described the first resistance light wall is arranged along the transverse direction of described liquid crystal panel.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320746894.XU CN203549599U (en) | 2013-11-22 | 2013-11-22 | Backlight module and liquid crystal display device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320746894.XU CN203549599U (en) | 2013-11-22 | 2013-11-22 | Backlight module and liquid crystal display device |
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| CN203549599U true CN203549599U (en) | 2014-04-16 |
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| CN201320746894.XU Expired - Fee Related CN203549599U (en) | 2013-11-22 | 2013-11-22 | Backlight module and liquid crystal display device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103591514A (en) * | 2013-11-22 | 2014-02-19 | 京东方科技集团股份有限公司 | Backlight module and liquid crystal display device |
| CN105204099A (en) * | 2015-09-21 | 2015-12-30 | 东莞市纳利光学材料有限公司 | Peep-proof brightening film and manufacturing method thereof |
| CN108169953A (en) * | 2018-01-03 | 2018-06-15 | 京东方科技集团股份有限公司 | A kind of peep-proof shows equipment and its switching method |
-
2013
- 2013-11-22 CN CN201320746894.XU patent/CN203549599U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103591514A (en) * | 2013-11-22 | 2014-02-19 | 京东方科技集团股份有限公司 | Backlight module and liquid crystal display device |
| CN103591514B (en) * | 2013-11-22 | 2016-03-02 | 京东方科技集团股份有限公司 | A kind of backlight module and liquid crystal indicator |
| CN105204099A (en) * | 2015-09-21 | 2015-12-30 | 东莞市纳利光学材料有限公司 | Peep-proof brightening film and manufacturing method thereof |
| CN108169953A (en) * | 2018-01-03 | 2018-06-15 | 京东方科技集团股份有限公司 | A kind of peep-proof shows equipment and its switching method |
| CN108169953B (en) * | 2018-01-03 | 2024-03-01 | 京东方科技集团股份有限公司 | Peep-proof display device and switching method thereof |
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Granted publication date: 20140416 |