CN203413546U - Optical film layer, backlight module and liquid crystal display device - Google Patents
Optical film layer, backlight module and liquid crystal display device Download PDFInfo
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- CN203413546U CN203413546U CN201320384950.XU CN201320384950U CN203413546U CN 203413546 U CN203413546 U CN 203413546U CN 201320384950 U CN201320384950 U CN 201320384950U CN 203413546 U CN203413546 U CN 203413546U
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- optical film
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Abstract
The utility model discloses an optical film layer, a backlight module and a liquid crystal display device. The optical film layer comprises a diffusion sheet, an intensifying prism sheet, a prism polaroid and a first reflection type polaroid which are sequentially arranged. In the technical scheme of the optical film layer, the backlight module and the liquid crystal display device provided by the utility model, the optical film layer comprises the diffusion sheet, the intensifying prism sheet, the prism polaroid and the first reflection type polaroid; compared with the optical film layer adopting the intensifying prism sheet in the prior art, the optical film layer adopting the prism polaroid, provided by some embodiments of the utility model, has the advantages that the transmittance quantity is increased; when the optical film layer comprising the prism polaroid is applied to the backlight module, the brightness of the backlight module can be effectively improved, and thus the requirement of a high-end product for the brightness of the backlight module is met.
Description
Technical field
The utility model relates to electronic technology field, particularly a kind of optical film, backlight module and liquid crystal indicator.
Background technology
Liquid crystal indicator is current conventional flat-panel monitor, and wherein thin-film transistor LCD device (Thin Film Transistor Liquid Crystal Display is called for short TFT-LCD) is the main product in liquid crystal indicator.
Wherein, backlight module is the vitals of liquid crystal indicator.Fig. 1 is the structural representation of backlight module in prior art, Fig. 2 is the hierarchy schematic diagram of backlight module in Fig. 1, as depicted in figs. 1 and 2, backlight module comprises: light source 1, LGP 2, reflecting plate 3 and optical film 4, light source 1 is arranged at the side of LGP 2, reflecting plate 3 is arranged at the back side of LGP 2, optical film 4 is arranged at the front of LGP 2, optical film 4 comprises: the diffusion sheet 41 setting gradually, prismatic lens (Brightness enhancement film adds lustre to, be called for short: BEF) 42, prismatic lens 43 and the reflective polaroid of adding lustre to (Advanced polarized film, be called for short: APF) 44.Wherein, reflecting plate 3 can for enhanced specular reflectivity sheet, (Enhanced specular reflector be called for short: ESR).
The optical film of prior art adopts two brightness that the prismatic lens that adds lustre to has improved backlight module to a certain extent, but to the having relatively high expectations of backlight module brightness, now in prior art, backlight module cannot reach the requirement of high-end product to backlight module brightness in the high-end product of field of liquid crystal display.
Utility model content
The utility model provides a kind of optical film, backlight module and liquid crystal indicator, for improving the brightness of backlight module, thereby meets the requirement of high-end product to backlight module brightness.
For achieving the above object, the utility model provides a kind of optical film, comprising: the diffusion sheet setting gradually, the prismatic lens that adds lustre to, prism polaroid and the first reflective polaroid.
Alternatively, described prism polaroid comprises the second reflective polaroid and is positioned at the one or more prism structures on described the second reflective polaroid.
Alternatively, described prism structure is prism.
Alternatively, the drift angle of described prism structure comprises: 88-93 degree.
Alternatively, the drift angle of described prism structure comprises: 90 degree.
Alternatively, the spacing between the drift angle of described prism structure comprises: 17-55 micron.
Alternatively, the spacing between the drift angle of described prism structure comprises: 17-30 micron or 45-55 micron.
Alternatively, the spacing between the drift angle of described prism structure comprises: 24 microns or 50 microns.
Alternatively, the thickness of described the second reflective polaroid comprises: 65-230 micron.
Alternatively, the thickness of described the second reflective polaroid comprises: 65-130 micron or 150-230 micron.
Alternatively, the thickness of described the second reflective polaroid is 120 microns or 180 microns.
For achieving the above object, the utility model provides a kind of backlight module, comprising: light source, LGP, reflecting plate and above-mentioned optical film, and described reflecting plate is positioned at the back side of described LGP, and described optical film is positioned at the front of described LGP.
For achieving the above object, the utility model provides a kind of liquid crystal indicator, comprising: display panels and above-mentioned backlight module.
The utlity model has following beneficial effect:
In the technical scheme of the optical film that the utility model provides, backlight module and liquid crystal indicator, optical film comprises diffusion sheet, the prismatic lens that adds lustre to, prism polaroid and the first reflective polaroid, compare with the add lustre to optical film of prismatic lens of available technology adopting, in some embodiment of the utility model, adopt the optical film of prism polaroid to improve light transmission capacity, when the optical film that comprises this prism polaroid is applied to backlight module, can effectively improve the brightness of this backlight module, thereby meet the requirement of high-end product to backlight module brightness.
Accompanying drawing explanation
Fig. 1 is the structural representation of backlight module in prior art;
Fig. 2 is the hierarchy schematic diagram of backlight module in Fig. 1;
The structural representation that Fig. 3 is a kind of optical film of providing according to some embodiment bis-of the present utility model;
Fig. 4 is the hierarchy schematic diagram of optical film in Fig. 3;
Fig. 5 is the structural representation of prism polaroid in Fig. 3;
Fig. 6 be in Fig. 5 A-A to cutaway view;
Fig. 7 is the hierarchy schematic diagram of optical film in Fig. 6;
The structural representation that Fig. 8 is a kind of backlight module of providing according to some embodiment of the present utility model;
Fig. 9 is the hierarchy schematic diagram of backlight module in Fig. 8;
Figure 10 is the structural representation of testing equipment;
Figure 11 is the floor map of liquid crystal indicator in Figure 10;
Figure 12 is the brightness contrast schematic diagram of the liquid crystal indicator of liquid crystal indicator of the present utility model and prior art.
The specific embodiment
For making those skilled in the art understand better the technical solution of the utility model, optical film the utility model being provided below in conjunction with accompanying drawing, backlight module and liquid crystal indicator are described in detail.
The structural representation that Fig. 3 is a kind of optical film of providing according to some embodiment of the present utility model, Fig. 4 is the hierarchy schematic diagram of optical film in Fig. 3, as shown in Figure 3 and Figure 4, this optical film comprises: (Brightness enhancement film-reflective polarizer is called for short: BEFRP) the 53 and first reflective polaroid 54 for the diffusion sheet 51 setting gradually, the prismatic lens 52 that adds lustre to, prism polaroid.
Add lustre to prismatic lens 52 and prism polaroid 53 between diffusion sheet 51 and the first reflective polaroid 54, and prism polaroid 53 is positioned on the prismatic lens 52 that adds lustre to.
Fig. 5 is the structural representation of prism polaroid in Fig. 3, Fig. 6 be in Fig. 5 A-A to cutaway view, as shown in Figure 5 and Figure 6, this prism polaroid comprises: the second reflective polaroid 531 and be positioned at the one or more prism structures 532 on the second reflective polaroid 531.
According to some embodiment of the present utility model, in the second reflective polaroid 531, be formed with a plurality of prism structures 532, the plurality of prism structure 532 is arranged in order.
According to some embodiment of the present utility model, prism structure 532 is prism.The vertex angle theta of prism structure 531 comprises: 88-93 degree, be preferably 90 degree, and the spacing d between 531 drift angles of prism structure comprises: 17-55 micron, be preferably 17-30 micron or 45-55 micron, be particularly preferably 24 microns or 50 microns.
According to some embodiment of the present utility model, the thickness of the second reflective polaroid 531 comprises: 65-230 micron, be preferably 65-130 micron or 150-230 micron, and be particularly preferably 120 microns or 180 microns.
Fig. 7 is the index path that light incides prism polaroid in Fig. 6, as shown in Figure 7, light P1 & P2 is incident to prism polaroid, light P2 in part light P1 & P2 is by the second reflective polaroid 531 reflections, and the light P1 in this part light P1 & P2 is reflected by prism structure 532; Light P2 in another part light P1 & P2 is by the second reflective polaroid 531 reflections, and the light P1 transmission from prism structure 532 in this part light P1 & P2 is gone out.Prismatic lens is compared with adding lustre to, prism polaroid 53 has increased by one second reflective polaroid 531 on the basis of prism structure, the light reflection that the second reflective polaroid 531 increasing can should directly penetrate away a part and leak to this optical film outside returns the prismatic lens 52 that adds lustre to, therefore, the volume reflection of 53 pairs of light of prism polaroid increases.The light that is reflected back the prismatic lens 52 that the adds lustre to prismatic lens 52 that added lustre to reflexes to the second reflective polaroid 531, the second reflective polaroid 531 is transformed into line polarisation by this light and by prism structure 532, this line polarizing transmission is gone out, and what be positioned at prism structure 532 tops is the first reflective polaroid 54, the light of going out from prism structure 532 transmissions is the needed line polarisation of the first reflective polaroid 54, thereby compare with the add lustre to optical film of prismatic lens of available technology adopting, under the use that coordinates the first reflective polaroid 54, prism polaroid is greatly improved the light transmission capacity of optical film.
Owing to adopting the light transmission capacity of optical film of prism polaroid higher than the add lustre to light transmission capacity of optical film of prismatic lens of employing, therefore compared with prior art the technical scheme of the present embodiment has improved the light transmission capacity of optical film.As shown in the light path in Fig. 2 and Fig. 4, to compare with the light transmission capacity of the optical film of prior art in Fig. 2, the optical film in Fig. 4 is owing to being provided with prism polaroid, and its light transmission capacity is greatly improved.
The optical film that some embodiment of the utility model provides comprises diffusion sheet, the prismatic lens that adds lustre to, prism polaroid and the first reflective polaroid, compare with the add lustre to optical film of prismatic lens of available technology adopting, in some embodiment of the utility model, adopt the optical film of prism polaroid to improve light transmission capacity, when the optical film that comprises this prism polaroid is applied to backlight module, can effectively improve the brightness of this backlight module, thereby meet the requirement of high-end product to backlight module brightness.
The structural representation that Fig. 8 is a kind of backlight module of providing according to some embodiment of the present utility model, Fig. 9 is the hierarchy schematic diagram of backlight module in Fig. 8, as shown in Figure 8 and Figure 9, this backlight module comprises: light source 1, LGP 2, reflecting plate 3 and optical film 5, reflecting plate 3 is positioned at the back side of LGP 2, and optical film 5 is positioned at the front of LGP 2.
According to some embodiment of the present utility model, light source 1 is positioned at the side of LGP 2.In actual applications, alternatively, light source 1 can also be positioned at the back side of LGP 2.Light source 1 can comprise light emitting diode (Light-Emitting Diode, be called for short: LED) or cathode fluorescent tube (Cold Cathode Fluorescent Lamp is called for short: CCFL).
According to some embodiment of the present utility model, reflecting plate 3 can be ESR.
According to some embodiment of the present utility model, optical film 4 can adopt the optical film in above-mentioned some embodiment, and specific descriptions can, referring to the description in above-described embodiment, repeat no more herein.
In the backlight module that some embodiment of the utility model provides, optical film comprises diffusion sheet, the prismatic lens that adds lustre to, prism polaroid and the first reflective polaroid, compare with the add lustre to optical film of prismatic lens of available technology adopting, in some embodiment of the utility model, adopt the optical film of prism polaroid to improve light transmission capacity, thereby effectively improved the brightness of backlight module, met the requirement of high-end product to backlight module brightness.
The utility model some embodiment provide a kind of liquid crystal indicator, and this liquid crystal indicator comprises display panels and backlight module.According to some embodiment of the present utility model, backlight module can adopt the backlight module in above-mentioned some embodiment, and specific descriptions can, referring to the description in above-mentioned some embodiment, repeat no more herein.
Below by embodiment, more specifically describe the utility model, but should not be understood as the scope of the present utility model that limits by any way.
Liquid crystal indicator and liquid crystal indicator of the prior art that some embodiment of the utility model is provided carry out light transmission contrast test.
Figure 10 is the structural representation of testing equipment, and Figure 11 is the floor map of liquid crystal indicator in Figure 10, and as shown in Figure 10 and Figure 11, this testing equipment is for the light transmission of test fluid crystal device.This testing equipment comprises: test platform 101, testing cushion 102 and testing arrangement 103, testing cushion 102 is positioned on test platform 101, testing arrangement 103 is positioned at the top of testing cushion 102, is placed with liquid crystal indicator 104 in testing cushion 102, and these liquid crystal indicator 104 ground connection.Between testing arrangement 103 and liquid crystal indicator 104, have mensuration distance L, preferably, mensuration distance L is 50 ± 3cm.The Topcon SR3 testing arrangement that testing arrangement 103 can provide for Topcon company.Testing arrangement 103 sends test light to liquid crystal indicator 104, and the shooting angle β of this test light is preferably 0.2 °.As shown in figure 11, by the test point in effective coverage on liquid crystal indicator 104 (Active Area) is tested, and then reach the object of test fluid crystal device 104 light transmissions.The quantity of test point is 9, and 9 test points are uniformly distributed in effective coverage, wherein, test point 7 and test point 9 are symmetrical arranged, and test point 5 and test point 6 are symmetrical arranged, and test point 2 and test point 4 are symmetrical arranged, test point 3 and test point 8 are symmetrical arranged, and test point 1 is positioned at center.The distance at each test point and edge, effective coverage is shown in Figure 11, wherein, H is the length of effective coverage, V is the width of effective coverage, for example: the distance between test point 7 and Yi Ge edge, effective coverage is V/10, distance between another edge of test point 7 and effective coverage is H/10, distance between test point 8 and Yi Ge edge, effective coverage is V/10, distance between another edge of test point 8 and effective coverage is H/2, distance between test point 1 and Yi Ge edge, effective coverage is V/2, distance between another edge of test point 1 and effective coverage is H/2, other test point by that analogy, no longer specifically describe.
By above-mentioned testing equipment, respectively liquid crystal indicator of the present utility model (optical film is APF+BEFRP+BEF+ESR), a kind of liquid crystal indicator of the prior art (optical film is APF+BEF+BEF+ESR) and another kind of liquid crystal indicator of the prior art (optical film is BEFRP+BEF+ESR) are carried out to light transmission test, liquid crystal indicator in light transmission test is 4.0 cun of liquid crystal indicators, the electric current of inputting in test process is 20 milliamperes, the penetrance of liquid crystal is 3.5%, and the LED quantity in backlight module is 8.Light transmission test can comprise luminance test, and test result is as shown in table 1 below.
Table 1
According to the every data in upper table 1, in table 2, provided liquid crystal indicator that the utility model provides and the contrast of liquid crystal indicator test result of the prior art, as shown in table 2 below.
Table 2
As above shown in table 2, the liquid crystal indicator that the utility model provides is compared with liquid crystal indicator of the prior art, in brightness, is greatly improved.
Further, adopt above-mentioned testing equipment respectively to liquid crystal indicator of the present utility model (optical film is APF+BEFRP+BEF+ESR), a kind of liquid crystal indicator of the prior art (optical film is APF+BEF+BEF+ESR) and another kind of liquid crystal indicator of the prior art (optical film is BEFRP+BEF+ESR), under 4.0 cun, 4.5 cun and 7.0 cun of conditions, carry out light transmission test.Figure 12 is the brightness contrast schematic diagram of the liquid crystal indicator of liquid crystal indicator of the present utility model and prior art, as shown in figure 12, at 4.0 cun, under 4.5 cun and 7.0 cun of three kinds of size conditions, liquid crystal indicator of the present utility model (optical film is APF+BEFRP+BEF+ESR) has all improved 10% left and right with a kind of liquid crystal indicator of the prior art (optical film is BEFRP+BEF+ESR) phase specific luminance, liquid crystal indicator of the present utility model (optical film is APF+BEFRP+BEF+ESR) has all improved 5% left and right with another kind of liquid crystal indicator of the prior art (optical film is APF+BEF+BEF+ESR) phase specific luminance.
Be understandable that, above embodiment is only used to principle of the present utility model is described and the illustrative embodiments that adopts, yet the utility model is not limited to this.For those skilled in the art, in the situation that not departing from spirit of the present utility model and essence, can make various modification and improvement, these modification and improvement are also considered as protection domain of the present utility model.
Claims (13)
1. an optical film, is characterized in that, comprising: the diffusion sheet setting gradually, the prismatic lens that adds lustre to, prism polaroid and the first reflective polaroid.
2. optical film according to claim 1, is characterized in that, described prism polaroid comprises the second reflective polaroid and is positioned at the one or more prism structures on described the second reflective polaroid.
3. optical film according to claim 2, is characterized in that, described prism structure is prism.
4. optical film according to claim 3, is characterized in that, the drift angle of described prism structure comprises: 88-93 degree.
5. optical film according to claim 4, is characterized in that, the drift angle of described prism structure comprises: 90 degree.
6. optical film according to claim 3, is characterized in that, the spacing between the drift angle of described prism structure comprises: 17-55 micron.
7. optical film according to claim 6, is characterized in that, the spacing between the drift angle of described prism structure comprises: 17-30 micron or 45-55 micron.
8. optical film according to claim 7, is characterized in that, the spacing between the drift angle of described prism structure comprises: 24 microns or 50 microns.
9. optical film according to claim 3, is characterized in that, the thickness of described the second reflective polaroid comprises: 65-230 micron.
10. optical film according to claim 9, is characterized in that, the thickness of described the second reflective polaroid comprises: 65-130 micron or 150-230 micron.
11. optical films according to claim 10, is characterized in that, the thickness of described the second reflective polaroid is 120 microns or 180 microns.
12. 1 kinds of backlight modules, it is characterized in that, described backlight module comprises: the arbitrary described optical film of light source, LGP, reflecting plate and claim 1 to 11, and described reflecting plate is positioned at the back side of described LGP, and described optical film is positioned at the front of described LGP.
13. 1 kinds of liquid crystal indicators, is characterized in that, comprising: the backlight module described in display panels and claim 12.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320384950.XU CN203413546U (en) | 2013-06-28 | 2013-06-28 | Optical film layer, backlight module and liquid crystal display device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320384950.XU CN203413546U (en) | 2013-06-28 | 2013-06-28 | Optical film layer, backlight module and liquid crystal display device |
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| CN203413546U true CN203413546U (en) | 2014-01-29 |
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| CN201320384950.XU Expired - Lifetime CN203413546U (en) | 2013-06-28 | 2013-06-28 | Optical film layer, backlight module and liquid crystal display device |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104713031A (en) * | 2015-03-27 | 2015-06-17 | 京东方科技集团股份有限公司 | Composite prism unit, backlight module and display device |
| CN105158833A (en) * | 2015-10-16 | 2015-12-16 | 京东方科技集团股份有限公司 | Composite reflector plate, backlight source, and display device |
| CN108594532A (en) * | 2018-05-24 | 2018-09-28 | 蚌埠国显科技有限公司 | A kind of filter blue light display of blue light wavelength red shift |
| CN108957606A (en) * | 2018-07-05 | 2018-12-07 | 深圳创维－Rgb电子有限公司 | A kind of design method and compound film sheet of compound film sheet |
| WO2020181457A1 (en) * | 2019-03-11 | 2020-09-17 | 深圳阜时科技有限公司 | Backlight module, display device and electronic device |
| CN114035378A (en) * | 2021-11-25 | 2022-02-11 | 深圳市华星光电半导体显示技术有限公司 | Display device |
| WO2024051048A1 (en) * | 2022-09-05 | 2024-03-14 | 瑞仪光电(南京)有限公司 | Backlight module and display apparatus |
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2013
- 2013-06-28 CN CN201320384950.XU patent/CN203413546U/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104713031A (en) * | 2015-03-27 | 2015-06-17 | 京东方科技集团股份有限公司 | Composite prism unit, backlight module and display device |
| CN105158833A (en) * | 2015-10-16 | 2015-12-16 | 京东方科技集团股份有限公司 | Composite reflector plate, backlight source, and display device |
| CN108594532A (en) * | 2018-05-24 | 2018-09-28 | 蚌埠国显科技有限公司 | A kind of filter blue light display of blue light wavelength red shift |
| CN108957606A (en) * | 2018-07-05 | 2018-12-07 | 深圳创维－Rgb电子有限公司 | A kind of design method and compound film sheet of compound film sheet |
| CN108957606B (en) * | 2018-07-05 | 2021-03-30 | 深圳创维－Rgb电子有限公司 | Design method of composite diaphragm and composite diaphragm |
| US11947137B2 (en) | 2018-07-05 | 2024-04-02 | Shenzhen Skyworth-Rgb Electronic Co., Ltd | Method for composite membrane and composite membrane |
| WO2020181457A1 (en) * | 2019-03-11 | 2020-09-17 | 深圳阜时科技有限公司 | Backlight module, display device and electronic device |
| CN114035378A (en) * | 2021-11-25 | 2022-02-11 | 深圳市华星光电半导体显示技术有限公司 | Display device |
| WO2023092668A1 (en) * | 2021-11-25 | 2023-06-01 | 深圳市华星光电半导体显示技术有限公司 | Display device |
| WO2024051048A1 (en) * | 2022-09-05 | 2024-03-14 | 瑞仪光电(南京)有限公司 | Backlight module and display apparatus |
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| C14 | Grant of patent or utility model | ||
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| CX01 | Expiry of patent term |
Granted publication date: 20140129 |