CN111176020A - Television backlight film and manufacturing process thereof - Google Patents
Television backlight film and manufacturing process thereof Download PDFInfo
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- CN111176020A CN111176020A CN202010111860.8A CN202010111860A CN111176020A CN 111176020 A CN111176020 A CN 111176020A CN 202010111860 A CN202010111860 A CN 202010111860A CN 111176020 A CN111176020 A CN 111176020A
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- scattering hole
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 13
- 238000009792 diffusion process Methods 0.000 claims abstract description 20
- 238000004080 punching Methods 0.000 claims abstract description 11
- 239000012528 membrane Substances 0.000 claims abstract description 5
- 238000000149 argon plasma sintering Methods 0.000 claims description 54
- 238000005520 cutting process Methods 0.000 claims description 34
- 239000000463 material Substances 0.000 claims description 4
- 239000002023 wood Substances 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 3
- 230000008569 process Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 7
- 230000008859 change Effects 0.000 abstract description 3
- 230000008033 biological extinction Effects 0.000 abstract 1
- 201000009310 astigmatism Diseases 0.000 description 20
- 230000031700 light absorption Effects 0.000 description 3
- 239000004973 liquid crystal related substance Substances 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 238000007650 screen-printing Methods 0.000 description 2
- 238000002834 transmittance Methods 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133611—Direct backlight including means for improving the brightness uniformity
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Liquid Crystal (AREA)
- Planar Illumination Modules (AREA)
Abstract
The invention discloses a television backlight film and a manufacturing process thereof, relates to the technical field of television backlight films, and particularly relates to a television backlight film which comprises a television face shell and a back plate, wherein a middle frame is arranged below the television face shell, a first diaphragm is arranged below the middle frame, a second diaphragm is arranged below the first diaphragm, a diffusion plate is arranged below the second diaphragm, a light bar is arranged below the diffusion plate, a reflector plate is arranged below the light bar, and the back plate is positioned below the reflector plate. This reflector plate structure of TV membrane that backs a light, punch and increase the broken line through the edge, make it change through the broken line and go the light refraction on assembling in a poor light, through punching, make its light scatter away, be equivalent to the extinction effect, change the refraction and the light reflection volume at edge to be that obvious bright border and dark border phenomenon do not appear on being shaded the edge, it is high to reach whole picture degree of consistency, no dark width and bright border phenomenon.
Description
Technical Field
The invention relates to the technical field of television backlight films, in particular to a television backlight film.
Background
The liquid crystal TV is a relatively mature industry at present, needs to be closer in the mature industry, needs to be innovated, and can inject new vitality into enterprises.
The ultra-thin direct type LED liquid crystal television is developed rapidly at present, the design of beautiful appearance, ultra-thin machine body and no frame is more and more popular with consumers, the design can be perfectly realized, the direct type LED liquid crystal television is a backlight module with short OD (below OD 22), a reflector plate which plays a role of reflecting light in the backlight module has a vital role, and the reflector plate is used for reflecting the light exposed from the bottom surface back to a light guide plate so as to improve the use efficiency of the light; under the condition of equal area brightness, the luminous efficiency is high and the power consumption is low. Because the design of light scattering of the short OD backlight module lamp lens has limited function of debugging visual effect, the phenomena of bright edges and dark edges at the edge of the backlight module are easily caused;
at present, the screen printing treatment of the dots on the surface of the reflector is adopted in the industry, the bright edge and the dark edge of the edge are effectively improved through the size of the dots and the light absorption effect of black ink, so that the uniformity of the whole picture is over 70 percent, but the process is complex, the processing cost is high, the reject ratio is high, and the unit price is high.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a television backlight film, which solves the problems that the design function of light scattering of a short-OD backlight module lamp lens provided in the background technology is limited, the visual effect is adjusted, the bright edge and the dark edge of the backlight module are easy to appear, the bright edge and the dark edge of the backlight module are effectively improved due to the light absorption effect of black ink, and the uniformity of the whole picture is over 70 percent.
In order to achieve the purpose, the invention is realized by the following technical scheme: the utility model provides a TV backlight membrane, includes TV face-piece and backplate, the center is installed to the below of TV face-piece, and the below of center installs first diaphragm, the second diaphragm is installed to the below of first diaphragm, and the below of second diaphragm installs the diffuser plate, the lamp strip is installed to the below of diffuser plate, and the below of lamp strip installs the reflector plate, the backplate is located the below of reflector plate.
Optionally, the television panel shell and the middle frame are both in a square structure, and the outer wall of the television panel shell is larger than the outer wall of the middle frame in size width.
Optionally, the first diaphragm is parallel to the second diaphragm, and the outer wall dimension structure of the first diaphragm is the same as that of the second diaphragm.
Optionally, the diffuser plate is parallel to the reflector plate, and the inner wall size structure of the reflector plate is larger than the outer wall size structure of the diffuser plate.
Optionally, the lamp strips are uniformly distributed along the central axis direction of the diffusion plate and are parallel to each other.
Optionally, the reflector plate includes first astigmatism hole, second astigmatism hole, third astigmatism hole, fourth astigmatism hole and reflecting plate, first astigmatism hole is all installed to the left and right sides of reflecting plate, and one side that the reflecting plate was kept away from in first astigmatism hole installs the second astigmatism hole, the fourth astigmatism hole is installed to one side that first astigmatism hole was kept away from in second astigmatism hole, and the third astigmatism hole is all installed to the upper and lower both sides in fourth astigmatism hole.
Optionally, the first light scattering hole, the second light scattering hole, the third light scattering hole and the fourth light scattering hole are all symmetrically distributed about the vertical central line of the reflection plate, the diameter of the first light scattering hole is 10mm, the inner wall diameter of the second light scattering hole is 6mm, the inner wall diameter of the third light scattering hole is 7mm, and the inner wall diameter of the fourth light scattering hole is 4 mm.
Optionally, the manufacturing process of the television backlight film includes:
s1 design: designing a feasible scheme for punching the reflector plate, and then evaluating the scheme;
s2 drawing: drawing the punching position of the reflector plate according to the scheme designed by S1 to manufacture a corresponding drawing;
s3 is as follows: combining the die-cutting cutters into a die-cutting plate according to the pattern of the S2 design requirement, and installing the die-cutting plate and the die-cutting machine;
s4 cutting: and putting the opened wood board die into the die cutting machine, debugging a skip moment and an edge material, and cutting a piece of product.
Optionally, the power supply of the die cutting machine is 380V/50Hz, the power of the main machine is 4KW, the maximum feeding width is 510mm, and the die cutting speed is 300-6000 Times/H.
The invention provides a television backlight film, which has the following beneficial effects:
the reflector plate structure is assembled on the backlight by punching holes on the edges and adding fold lines, the refraction of light is changed by the fold lines, the light is scattered by punching holes, which is equivalent to light absorption, and the refraction and light reflection quantity of the edges are changed, so that the phenomena of obvious bright edges and dark edges do not occur on the edges of the backlight, and the high uniformity of the whole picture is achieved, and the phenomena of dark width and bright edges do not occur;
1. the television backlight film is provided with the diffusion plate, and the diffusion plate has good performances such as heat resistance, dimensional stability and mechanical strength, has high light transmittance and excellent shielding property and durability, enables the light diffusion effect to reach the optimal state, and can effectively improve the diffusion effect of uniform light distribution of the backlight source.
2. This TV backlight membrane is provided with the lamp strip, can effectually provide the light source for the TV through the lamp strip, and the evenly distributed of lamp strip can effectual reinforcing light source's luminance to and the homogeneity that can effectual holding the light source.
3. This TV backlight membrane is provided with first astigmatism hole, the second astigmatism hole, third astigmatism hole and fourth astigmatism hole, through first astigmatism hole, the second astigmatism hole, cooperation between third astigmatism hole and the fourth astigmatism hole can reach to reduce marginal bright border phenomenon and become effective improvement way by its optical effect of effectual change, this kind of mode is disposable to drop into a little high, but the continuous cost is less than the silk screen printing cost far away, the comprehensive cost advantage is big, and processing is simple, need not secondary operation, high efficiency.
Drawings
FIG. 1 is a schematic front view of the present invention;
FIG. 2 is a schematic top view of a reflector according to the present invention;
FIG. 3 is a schematic perspective view of a reflector according to the present invention;
FIG. 4 is an enlarged view of a portion of FIG. 1A;
FIG. 5 is a schematic view of a manufacturing process of the reflective sheet of the present invention.
In the figure: 1. a television front shell; 2. a middle frame; 3. a first diaphragm; 4. a second diaphragm; 5. a diffusion plate; 6. a light bar; 7. a reflective sheet; 8. a back plate.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1 to 5, the present invention provides a technical solution: a television backlight film comprises a television face shell 1 and a back plate 8, wherein a middle frame 2 is arranged below the television face shell 1, a first diaphragm 3 is arranged below the middle frame 2, the television face shell 1 and the middle frame 2 are both in a square structure, and the outer wall of the television face shell 1 is larger than the outer wall of the middle frame 2 in size width;
the second diaphragm 4 is arranged below the first diaphragm 3, the diffusion plate 5 is arranged below the second diaphragm 4, the first diaphragm 3 is parallel to the second diaphragm 4, the size structure of the outer wall of the first diaphragm 3 is the same as that of the outer wall of the second diaphragm 4, the light bar 6 is arranged below the diffusion plate 5, the reflector plate 7 is arranged below the light bar 6, the diffusion plate 5 is parallel to the reflector plate 7, the size structure of the inner wall of the reflector plate 7 is larger than that of the outer wall of the diffusion plate 5, the diffusion plate 5 has good performances such as heat resistance, size stability and mechanical strength, high light transmittance, good shielding property and durability, the light diffusion effect of the diffusion plate reaches the best state, and the diffusion effect of uniform light distribution of the backlight source can be effectively improved;
the light bars 6 are uniformly distributed along the central axis direction of the diffusion plate 5, and the light bars 6 are parallel to each other, so that a light source can be effectively provided for a television through the light bars 6, the brightness of the light source can be effectively enhanced through the uniform distribution of the light bars 6, and the uniformity of the light source can be effectively maintained;
the back plate 8 is positioned below the reflection sheet 7, the reflection sheet 7 comprises a first light scattering hole 701, a second light scattering hole 702, a third light scattering hole 703, a fourth light scattering hole 704 and a reflection plate 705, the left and right sides of the reflection plate 705 are all provided with the first light scattering hole 701, one side of the first light scattering hole 701 away from the vertical central line of the reflection plate 705 is provided with the second light scattering hole 702, one side of the second light scattering hole 702 away from the first light scattering hole 701 is provided with the fourth light scattering hole 704, the upper and lower sides of the fourth light scattering hole 704 are all provided with the third light scattering hole 703, the four of the first light scattering hole 701, the second light scattering hole 702, the third light scattering hole 703 and the fourth light scattering hole 704 are all symmetrically distributed about the vertical central line of the reflection plate 705, the diameter of the first light scattering hole 701 is 10mm, the diameter of the inner wall of the second light scattering hole 702 is 6mm, the diameter of the inner wall of the third light scattering hole 703 is 7mm, and the diameter of the inner wall of the fourth light scattering hole is 4mm, the optical effect of the first light scattering hole 701, the second light scattering hole 702, the third light scattering hole 703 and the fourth light scattering hole 704 can be effectively changed to reduce the edge bright edge phenomenon, so that the method is an effective improvement way, the one-time investment is slightly high, but the continuous cost is far lower than the silk-screen cost, the comprehensive cost advantage is large, the processing is simple, the secondary processing is not needed, and the efficiency is high;
the manufacturing process of the television backlight film comprises the following steps:
s1 design: designing a feasible scheme for punching the reflector 7, and then evaluating the scheme;
s2 drawing: drawing the punching position of the reflector plate 7 according to the scheme designed by S1 to manufacture a corresponding drawing;
s3 is as follows: combining the die-cutting cutters into a die-cutting plate according to the pattern of the S2 design requirement, and installing the die-cutting plate and the die-cutting machine;
s4 cutting: putting the opened wood board die into a die cutting machine, debugging a skip moment and an edge material, and cutting a piece of product;
the power supply of the die cutting machine is 380V/50Hz, the power of the main machine is 4KW, the maximum feeding width is 510mm, and the die cutting speed is 300-6000 Times/H.
To sum up, the manufacturing process of the television backlight film comprises the following steps:
s1 design: designing a feasible scheme for punching the reflector 7, and then evaluating the scheme;
s2 drawing: drawing the punching position of the reflector plate 7 according to the scheme designed by S1 to manufacture a corresponding drawing;
s3 is as follows: combining the die-cutting cutters into a die-cutting plate according to the pattern of the S2 design requirement, and installing the die-cutting plate and the die-cutting machine;
s4 cutting: and putting the opened wood board die into the die cutting machine, debugging a skip moment and an edge material, and cutting a piece of product.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the technical scope of the present invention and the equivalent alternatives or modifications according to the technical solution and the inventive concept of the present invention within the technical scope of the present invention.
Claims (9)
1. A TV backlight membrane, includes TV face-piece (1) and backplate (8), its characterized in that: center (2) are installed to the below of TV face-piece (1), and first diaphragm (3) are installed to the below of center (2), second diaphragm (4) are installed to the below of first diaphragm (3), and diffuser plate (5) are installed to the below of second diaphragm (4), lamp strip (6) are installed to the below of diffuser plate (5), and reflector plate (7) are installed to the below of lamp strip (6), backplate (8) are located the below of reflector plate (7).
2. The backlight film of claim 1, wherein: the interior of the television face shell (1) and the interior of the middle frame (2) are both in a structure like a Chinese character 'kou', and the size width of the outer wall of the television face shell (1) is larger than that of the outer wall of the middle frame (2).
3. The backlight film of claim 1, wherein: the first diaphragm (3) is parallel to the second diaphragm (4), and the size structure of the outer wall of the first diaphragm (3) is the same as that of the outer wall of the second diaphragm (4).
4. The backlight film of claim 1, wherein: the diffusion plate (5) is parallel to the reflection sheet (7), and the size structure of the inner wall of the reflection sheet (7) is larger than that of the outer wall of the diffusion plate (5).
5. The backlight film of claim 1, wherein: the lamp strips (6) are uniformly distributed along the central axis direction of the diffusion plate (5), and the lamp strips (6) are parallel to each other.
6. The backlight film of claim 1, wherein: the reflector plate (7) comprises a first light scattering hole (701), a second light scattering hole (702), a third light scattering hole (703), a fourth light scattering hole (704) and a reflector plate (705), wherein the first light scattering hole (701) is installed on the left side and the right side of the reflector plate (705), the second light scattering hole (702) is installed on one side, away from the vertical center line of the reflector plate (705), of the first light scattering hole (701), the fourth light scattering hole (704) is installed on one side, away from the first light scattering hole (701), of the second light scattering hole (702), and the third light scattering hole (703) is installed on the upper side and the lower side of the fourth light scattering hole (704).
7. The backlight film of claim 6, wherein: the first light scattering hole (701), the second light scattering hole (702), the third light scattering hole (703) and the fourth light scattering hole (704) are symmetrically distributed about a vertical central line of the reflecting plate (705), the diameter of the first light scattering hole (701) is 10mm, the diameter of the inner wall of the second light scattering hole (702) is 6mm, the diameter of the inner wall of the third light scattering hole (703) is 7mm, and the diameter of the inner wall of the fourth light scattering hole (704) is 4 mm.
8. A television backlight film and a process for making the same according to any one of claims 1 to 7, wherein: the manufacturing process of the television backlight film comprises the following steps:
s1 design: designing a feasible scheme for punching the reflector plate (7), and then evaluating the scheme;
s2 drawing: drawing the punching position of the reflector plate (7) according to the scheme designed by S1 to manufacture a corresponding drawing;
s3 is as follows: combining the die-cutting cutters into a die-cutting plate according to the pattern of the S2 design requirement, and installing the die-cutting plate and the die-cutting machine;
s4 cutting: and putting the opened wood board die into the die cutting machine, debugging a skip moment and an edge material, and cutting a piece of product.
9. The television backlight film and the manufacturing process thereof according to claim 8, wherein: the power of the die cutting machine is 380V/50Hz, the power of the main machine is 4KW, the maximum feeding width is 510mm, and the die cutting speed is 300-6000 Times/H.
Priority Applications (1)
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CN202010111860.8A CN111176020A (en) | 2020-02-24 | 2020-02-24 | Television backlight film and manufacturing process thereof |
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CN202010111860.8A CN111176020A (en) | 2020-02-24 | 2020-02-24 | Television backlight film and manufacturing process thereof |
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CN111176020A true CN111176020A (en) | 2020-05-19 |
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CN202010111860.8A Pending CN111176020A (en) | 2020-02-24 | 2020-02-24 | Television backlight film and manufacturing process thereof |
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US20060209416A1 (en) * | 2005-03-18 | 2006-09-21 | Toray Saehan Inc. | Light-diffusing film having pores |
CN103481332A (en) * | 2013-09-23 | 2014-01-01 | 东莞轩朗实业有限公司 | Forming device for multihole reflection optical diaphragms |
US20140327832A1 (en) * | 2011-11-30 | 2014-11-06 | Sharp Kabushiki Kaisha | Illumination device, display device, and television reception device |
CN207992643U (en) * | 2018-03-23 | 2018-10-19 | Tcl海外电子(惠州)有限公司 | Reflector plate and liquid crystal display device |
CN208818855U (en) * | 2018-07-13 | 2019-05-03 | 深圳创维-Rgb电子有限公司 | A kind of reflector plate, backlight module and display equipment |
CN110027202A (en) * | 2019-04-02 | 2019-07-19 | 深圳市山本光电股份有限公司 | A kind of punching cutting process of reflectance coating |
CN209690553U (en) * | 2019-05-14 | 2019-11-26 | 青岛卓英社科技股份有限公司 | A kind of reflector plate solving display bright border |
CN211826825U (en) * | 2020-02-24 | 2020-10-30 | 广东瑞捷光电股份有限公司 | Backlight film for television |
-
2020
- 2020-02-24 CN CN202010111860.8A patent/CN111176020A/en active Pending
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20060209416A1 (en) * | 2005-03-18 | 2006-09-21 | Toray Saehan Inc. | Light-diffusing film having pores |
US20140327832A1 (en) * | 2011-11-30 | 2014-11-06 | Sharp Kabushiki Kaisha | Illumination device, display device, and television reception device |
CN103481332A (en) * | 2013-09-23 | 2014-01-01 | 东莞轩朗实业有限公司 | Forming device for multihole reflection optical diaphragms |
CN207992643U (en) * | 2018-03-23 | 2018-10-19 | Tcl海外电子(惠州)有限公司 | Reflector plate and liquid crystal display device |
CN208818855U (en) * | 2018-07-13 | 2019-05-03 | 深圳创维-Rgb电子有限公司 | A kind of reflector plate, backlight module and display equipment |
CN110027202A (en) * | 2019-04-02 | 2019-07-19 | 深圳市山本光电股份有限公司 | A kind of punching cutting process of reflectance coating |
CN209690553U (en) * | 2019-05-14 | 2019-11-26 | 青岛卓英社科技股份有限公司 | A kind of reflector plate solving display bright border |
CN211826825U (en) * | 2020-02-24 | 2020-10-30 | 广东瑞捷光电股份有限公司 | Backlight film for television |
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