CN115933251A - Reflecting cover structure capable of guiding light uniformly and backlight module - Google Patents
Reflecting cover structure capable of guiding light uniformly and backlight module Download PDFInfo
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- CN115933251A CN115933251A CN202211595733.5A CN202211595733A CN115933251A CN 115933251 A CN115933251 A CN 115933251A CN 202211595733 A CN202211595733 A CN 202211595733A CN 115933251 A CN115933251 A CN 115933251A
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- 238000004512 die casting Methods 0.000 claims abstract description 19
- 238000009792 diffusion process Methods 0.000 claims description 36
- 239000003292 glue Substances 0.000 claims description 14
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 12
- 229910052742 iron Inorganic materials 0.000 claims description 6
- 230000003014 reinforcing effect Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 5
- 239000004973 liquid crystal related substance Substances 0.000 abstract description 3
- 230000002093 peripheral effect Effects 0.000 description 10
- 239000012528 membrane Substances 0.000 description 7
- 230000003287 optical effect Effects 0.000 description 5
- 239000000758 substrate Substances 0.000 description 3
- 230000005465 channeling Effects 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000002834 transmittance Methods 0.000 description 2
- 206010063659 Aversion Diseases 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005282 brightening Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000002096 quantum dot Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
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Abstract
The utility model relates to a liquid crystal display technology field discloses a reflector structure and backlight unit that leaded light is even, reflector structure that leaded light is even includes a plurality of lamp cups, the lamp cup includes first lamp cup, second lamp cup and center lamp cup, first lamp cup, the height of second lamp cup and center lamp cup reduces in proper order, contained angle between first lamp cup and the second lamp cup is first contained angle, contained angle between second lamp cup and the center lamp cup is the second contained angle, contained angle between the adjacent center lamp cup is the third contained angle, first contained angle is greater than the second contained angle, the second contained angle is greater than the third contained angle, promote the face homogeneity of this reflector reflection light to the diffuser plate. Backlight unit includes die casting and well chase, is provided with lamp plate, diffuser plate and bowl between die casting and the well chase, and the bowl is used for controlling the direction of dispersing of light to in making the leading-in diffuser plate of light, promote backlight unit's whole face homogeneity. This application has the effect that promotes backlight unit face homogeneity.
Description
Technical Field
The application relates to the technical field of liquid crystal display, in particular to a reflector structure with uniform light guide and a backlight module.
Background
In recent years, the lcd device is widely used in the electrical industry due to its characteristics of light weight, thin volume, small occupied space, etc., and gradually replaces the conventional crt display device, and the lcd device itself does not emit light, so that it is necessary to install a backlight module, etc. on the lcd device to provide a light source assembly for providing a sufficient planar light for the lcd device. The direct type backlight module is usually arranged in a liquid crystal display, and adopts an array type LED surface light source and comprises an LED substrate, a Mini-LED light source, a quantum dot film, a diffusion sheet and a brightening film. At present, diffusion sheet light mixing is mostly adopted, or scattering haze particles are added into a fluorescent film for light mixing, but the transmittance of light is reduced, so that the overall brightness of a surface light source is influenced.
The mura-compensated direct MiniLED backlight module in the related art comprises a PCB substrate, a reflecting cover and an optical diaphragm set, wherein the PCB substrate, the reflecting cover and the optical diaphragm set are sequentially arranged from bottom to top; the transflective film satisfies R10 > R30 > R50; and arranging a plurality of micro-lens structures on the light outgoing side and/or the light incoming side of the diffusion membrane to form a micro-lens structure surface. The light rays are reflected for multiple times among the reflecting cover, the diffusion diaphragm and the semi-transparent reflection diaphragm, so that the light emitting uniformity of the backlight module is realized. However, the light-emitting uniformity of the mura-compensated direct-type MiniLED backlight module in the related art is still low when emitting light.
Therefore, the direct type backlight module in the related art has the problem of low light-emitting uniformity.
Disclosure of Invention
In order to improve the light-emitting uniformity of the backlight module, the application provides a reflector structure with uniform light guiding and the backlight module.
In a first aspect, the present application provides a reflector structure with uniform light guiding, which adopts the following technical scheme:
a reflector structure capable of guiding light uniformly comprises a reflector bottom plate and a plurality of lamp cups arranged on the reflector bottom plate, wherein each lamp cup comprises a first lamp cup, a second lamp cup and a center lamp cup, the first lamp cup is arranged on the outermost edge of the reflector bottom plate, the second lamp cup is arranged adjacent to the first lamp cup, the center lamp cup is arranged adjacent to the second lamp cup, the height of the first lamp cup is lower than that of the second lamp cup, and the height of the second lamp cup is lower than that of the center lamp cup;
the included angle between the adjacent first lamp cups is a first included angle, the included angle between the adjacent second lamp cups is a second included angle, the included angle between the adjacent center lamp cups is a third included angle, the first included angle is larger than the second included angle, and the second included angle is larger than the third included angle.
Based on the technical scheme, when the reflector is used, the reflector is attached to the diffusion plate, and the central lamp cup is higher than the second lamp cup, the second lamp cup is higher than the first lamp cup, and the peripheral wall of the central lamp cup is attached to the diffusion plate, so that the phenomenon of light channeling among subareas is improved, and light rays at the central lamp cup are limited from being diffused outwards; because the first included angle is greater than the second included angle, the second included angle is greater than the third included angle, therefore the perisporium of second lamp cup and the perisporium of first lamp cup all do not laminate with the diffuser plate, first lamp cup and second lamp cup department have more light reflection to the edge all around of diffuser plate, and the light that reflects to the diffuser plate through this bowl structure simultaneously is more even.
Preferably, the first lamp cup comprises a first side wall and a first bottom wall, the first side wall and an included angle between the first bottom wall are a first inner included angle, the second lamp cup comprises a second side wall and a second bottom wall, the second side wall and an included angle between the second bottom wall are a second inner included angle, the center lamp cup comprises a third side wall and a third bottom wall, the third side wall and an included angle between the third bottom wall are a third inner included angle, the first inner included angle is larger than the second inner included angle, and the second inner included angle is larger than the third inner included angle.
Based on above-mentioned technical scheme, contained angle in the first interior contained angle is greater than the second for the light that first lamp cup reflects is more, contained angle in the second is greater than the third, makes the light that the second lamp cup reflects more, thereby reduces the light loss, makes light more even on the diffuser plate that first lamp cup, second lamp cup and centre light cup correspond.
Preferably, the first included angle is 115 ° to 120 °, the second included angle is 82 ° to 90 °, and the third included angle is 60 ° to 70 °.
Based on the technical scheme, the angle of the first included angle is 115-120 degrees, the angle of the second included angle is 82-90 degrees, the angle of the third included angle is 60-70 degrees, and more light rays are reflected to the peripheral edge of the diffusion plate at the positions of the first lamp cup and the second lamp cup, so that the light rays on the diffusion plate corresponding to the first lamp cup, the second lamp cup and the center lamp cup are more uniform.
Preferably, the first inner included angle is between 145 ° and 155 °, the second inner included angle is between 130 ° and 140 °, and the third inner included angle is between 80 ° and 90 °.
Based on the technical scheme, the angle of the first inner included angle is 145-155 degrees, the angle of the second inner included angle is 130-140 degrees, the angle of the third inner included angle is 80-90 degrees, light loss in the angle range is lower, and light reflected to the diffusion plate is more uniform.
Preferably, the height difference between the first and second lamp cups is equal to the height difference between the center lamp cup and the second lamp cup.
Based on the technical scheme, the light rays reflected to the diffusion plate by the first lamp cup, the second lamp cup and the center lamp cup are more uniform by controlling the height difference between the first lamp cup and the second lamp cup to be the same as the height difference between the second lamp cup and the center lamp cup.
Preferably, the height difference between the first lamp cup and the second lamp cup is between 0.5mm and 1 mm.
Based on the technical scheme, the thickness of the backlight module with the reflector is limited by controlling the height difference between the first lamp cup and the second lamp cup and the height difference between the second lamp cup and the central lamp cup to be between 0.5mm and 1 mm.
In a second aspect, the present application provides a backlight module, which adopts the following technical solution:
the utility model provides a backlight module, includes die casting and well chase, the die casting with the connection can be dismantled to well chase, the die casting with supreme lamp plate and the diffuser plate of having set gradually from the bottom between the well chase, the lamp plate with be provided with the bowl between the diffuser plate, the bowl is used for controlling the direction of dispersing of light to make light leading-in the diffuser plate.
Based on the technical scheme, the die casting is detachably connected with the middle iron frame, and the die casting and the middle iron frame form a placing space, so that the lamp panel, the diffusion plate and the reflector can be conveniently placed in the placing space; the lamp plate sends light as the light source, and on light passed through the bowl reflection to the diffuser plate, it is more even to make the light that reflects on the diffuser plate through this bowl to promote this backlight unit's whole face homogeneity.
Preferably, the diffuser plate includes an edge portion and a central portion, the edge portion and the central portion being integrally provided, and a thickness of the edge portion being lower than a thickness of the central portion.
Based on above-mentioned technical scheme, through the thickness that reduces the diffuser plate edge portion, promote the luminousness of diffuser plate edge all around to promote backlight unit brightness all around, and then promote backlight unit's face homogeneity, thereby solve backlight unit optical effect all around dark, the problem that whole face homogeneity is low, promoted backlight unit's mass picture feel.
Preferably, the reflector with be provided with the reflector floating compound between the lamp plate, the reflector floating compound is used for strengthening the reflector with fixed between the lamp plate.
Based on above-mentioned technical scheme, fix the reflector bonding through the reflector fixed glue and fix on the lamp plate, avoid the reflector to appear not hard up bad phenomena such as droing, aversion.
Preferably, be provided with a plurality of LED lamps on the lamp plate, be provided with the lamp cup on the bowl, the LED lamp with the lamp cup one-to-one sets up, the lamp plate with be provided with heat-conducting glue between the die casting, heat-conducting glue is used for deriving the heat that the LED lamp distributed out.
Based on above-mentioned technical scheme, LED lamp and lamp cup one-to-one set up to avoid appearing scurrying the phenomenon of light between the adjacent cell, can produce the heat when the LED lamp is luminous, distribute away the heat through the heat conduction glue, avoid the lamp plate to be burnt out.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the height of the center lamp cup is higher than that of the second lamp cup, the height of the second lamp cup is higher than that of the first lamp cup, and the peripheral wall of the center lamp cup is attached to the diffusion plate, so that the phenomenon of light channeling among subareas is improved; because the first included angle is larger than the second included angle and the second included angle is larger than the third included angle, more light rays are reflected to the peripheral edge of the diffusion plate at the first lamp cup and the second lamp cup, and the light rays reflected to the diffusion plate through the reflection cover structure are more uniform;
2. the first inner included angle is larger than the second inner included angle, so that more light rays are reflected by the first lamp cup, and the second inner included angle is larger than the third inner included angle, so that more light rays are reflected by the second lamp cup, and the light loss is reduced;
3. reduce the thickness of diffuser plate edge portion, promote the luminousness of diffuser plate edge all around.
Drawings
FIG. 1 is a schematic diagram illustrating an overall structure of a light-guiding uniform reflector structure according to an embodiment of the present disclosure;
FIG. 2 shows an enlarged view of portion A of FIG. 1;
FIG. 3 is a side view of a light directing uniform reflector structure according to an embodiment of the present application;
FIG. 4 is a side view of FIG. 3 from a different perspective;
FIG. 5 is a schematic view illustrating an overall structure of a backlight module according to an embodiment of the present application;
FIG. 6 is a schematic view illustrating a partial structure of a backlight module according to an embodiment of the present application;
FIG. 7 is a schematic view of an overall structure of a diffuser plate according to an embodiment of the present application;
FIG. 8 is a side view of a diffuser plate according to an embodiment of the present application;
fig. 9 shows a side view from a different perspective of fig. 8.
Description of reference numerals: 10. die casting; 20. heat conducting glue; 30. a lamp panel; 31. an LED lamp; 40. a reflector; 41. a reflector base plate; 42. a lamp cup; 43. a first lamp cup; 431. a first bottom wall; 432. a first side wall; 433. a first inner included angle; 44. a second lamp cup; 441. a second bottom wall; 442. a second side wall; 443. a second inner included angle; 45. a center lamp cup; 451. a third bottom wall; 452. a third side wall; 453. a third inner included angle; 46. a first included angle; 47. a second included angle; 48. a third included angle; 50. fixing glue for the reflecting cover; 60. a backlight material; 61. a diffusion plate; 611. an edge portion; 612. a central portion; 62. a light splitting film; 63. a diffusion membrane; 64. a lower brightness enhancement film; 65. a middle bright enhancement film; 66. a privacy film; 70. a middle iron frame.
Detailed Description
The present application is described in further detail below with reference to figures 1-9, which show embodiments of the present application, but it should be understood that the present application can be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
It should be understood that although the terms "first," "second," "king," etc. may be used herein to describe various information, such information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present application. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
In a first aspect, an embodiment of the present application discloses a reflector structure with uniform light guiding.
Referring to fig. 1, the reflector structure that the light is even includes reflector bottom plate 41 and a plurality of lamp cup 42, and reflector bottom plate 41 is the rectangle, and a plurality of lamp cups 42 adopt array arrangement to set up on reflector bottom plate 41, and light reflects through lamp cup 42, can effectively reduce the light loss.
Referring to fig. 2, the lamp cup 42 includes a plurality of first lamp cups 43, a plurality of second lamp cups 44, and a plurality of center lamp cups 45, the plurality of first lamp cups 43 are combined to form a first ring of lamp cups, the first ring of lamp cups is rectangular in shape, and the first ring of lamp cups is disposed at the outermost peripheral edge of the reflector base plate 41; a plurality of second lamp cups 44 are integrally connected to form a second circle of lamp cups, the second circle of lamp cups are rectangular, the rectangle of the second circle of lamp cups is smaller than that of the first circle of lamp cups, the second circle of lamp cups are arranged adjacent to the first circle of lamp cups, and the second circle of lamp cups and the first circle of lamp cups are integrally connected; the center lamp cup 45 is arranged at the inner side of the second lamp cup 44, and a plurality of center lamp cups 45 are combined to form a center ring lamp cup which is rectangular.
Referring to fig. 3 and 4, the first lamp cup 43 includes a first side wall 432 and a first bottom wall 431, the first side wall 432 is integrally connected to the first bottom wall 431, an included angle between the first side wall 432 and the first bottom wall 431 is a first inner included angle 433, and an angle of the first inner included angle 433 may be 145 °, 147 °, 149 °, 151 °, 153 °, or 155 °.
Referring to fig. 3 and 4, the second lamp cup 44 includes a second bottom wall 441 and a second side wall 442, the second side wall 442 is integrally connected to the second bottom wall 441, an included angle between the second side wall 442 and the second bottom wall 441 is a second inner included angle 443, and an angle of the second inner included angle 443 may be 130 °, 132 °, 134 °, 136 °, 138 ° or 140 °.
Referring to fig. 3 and 4, the center light cup 45 includes a third bottom wall 451 and a third side wall 452, the third side wall 452 is integrally connected to the third bottom wall 451, an included angle between the third side wall 452 and the third bottom wall 451 is a third inner included angle 453, the third inner included angle 453 may be 80 °, 82 °, 84 °, 86 °, 88 ° or 90 °, the first inner included angle 433 is greater than the second inner included angle 443, and the second inner included angle 443 is greater than the third inner included angle 453, so that light reflected by the first light cup 43 and the second light cup 44 is more, light loss is reduced, and light reflected by the first light cup 43, the second light cup 44 and the center light cup 45 to the diffusion plate 61 is more uniform.
Referring to fig. 3 and 4, an included angle between adjacent first sidewalls 432 is a first included angle 46, an included angle between adjacent second sidewalls 442 is a second included angle 47, an included angle between third sidewalls 452 of adjacent center lamp cups 45 is a third included angle 48, an angle of the first included angle 46 may be 115 °, 117 ° or 120 °, an angle of the second included angle 47 may be 82 °, 84 °, 86 ° or 90 °, an angle of the third included angle 48 may be 60 °, 64 °, 68 ° or 70 °, the first included angle 46 is greater than the second included angle 47, and the second included angle 47 is greater than the third included angle 48, so that more light is reflected to the peripheral edge of the diffusion plate 61 at the first lamp cup 43 and the second lamp cup 44, so that the brightness of the peripheral edge of the diffusion plate 61 is the same as the brightness of the center of the diffusion plate 61, thereby improving the surface uniformity of the light on the diffusion plate 61.
Referring to fig. 3 and 4, in the embodiment of the present application, the angle of the first inner angle 433 is 149 °, the angle of the second inner angle 443 is 133 °, the angle of the third inner angle 453 is 123 °, the angle of the first angle 46 is 118 °, the angle of the second angle 47 is 86 °, the angle of the third angle 48 is 66 °, and the reflection effect of the reflection cover 40 composed of the first lamp cup 43, the second lamp cup 44, and the center lamp cup 45 is better under the angle, so that the surface uniformity of the light on the diffusion plate 61 is improved.
Referring to fig. 3, the height of the first lamp cup 43 is lower than that of the second lamp cup 44, the height of the second lamp cup 44 is lower than that of the center lamp cup 45, the height difference between the first lamp cup 43 and the second lamp cup 44 is equal to that between the second lamp cup 44 and the center lamp cup 45, and the height difference can be 0.5mm, 0.7mm or 1.0mm, the peripheral wall of the center lamp cup 45 is attached to the diffusion plate 61, so that the phenomenon of light fleeing between subareas is improved, the light at the center lamp cup 45 is limited from diffusing outwards, and the light on the diffusion plate 61 is more uniform.
Referring to fig. 3, the height of the first lamp cup 43 is 1.10mm, the height of the second lamp cup 44 is 1.80mm, and the height of the center lamp cup 45 is 2.50mm, so that the height difference in the embodiment of the present application is 0.7mm, and the light reflected by the reflection cover 40 onto the diffusion plate 61 is more uniform.
The implementation principle of the even bowl structure of leaded light of this application embodiment does: the heights of the first lamp cup 43, the second lamp cup 44 and the center lamp cup 45 are gradually reduced, the first inner included angle 433 is larger than the second inner included angle 443, the second inner included angle 443 is larger than the third inner included angle 453, the first included angle 46 is larger than the second included angle 47, and the second included angle 47 is larger than the third included angle 48, so that more light rays enter the peripheral edge of the diffusion plate 61, the brightness of the peripheral edge of the diffusion plate 61 is improved, and the uniformity of the whole surface of the backlight module is improved.
In a second aspect, an embodiment of the present application discloses a backlight module.
Referring to fig. 5, backlight unit includes die casting 10 and well chase 70, die casting 10 and well chase 70 joint mutually, die casting 10 sets up the below at well chase 70, well chase 70 and die casting 10 constitute and place the space, supreme lamp plate 30 has set gradually down in should placing the space, bowl 40 and backlight 60, lamp plate 30 provides luminance as the light source, the light reflection that bowl 40 distributes out lamp plate 30 goes out, thereby reduce the light loss, backlight 60 is used for promoting the homogeneity of light, luminance etc.
Referring to fig. 6, a plurality of LED lamps 31 are arranged on the lamp panel 30, lamp cups 42 are arranged on the reflector 40, the LED lamps 31 and the lamp cups 42 are arranged in a one-to-one correspondence manner, reflector fixing glue 50 is arranged between the lamp panel 30 and the reflector 40, and the reflector fixing glue 50 is adhered to the lamp panel 30 to prevent the reflector 40 from loosening and falling off, so that adverse phenomena such as poor display effect caused by displacement are avoided.
Referring to fig. 6, be provided with heat conduction glue 20 between lamp plate 30 and the die casting 10, LED lamp 31 on the lamp plate 30 can produce the heat when luminous, distributes away the heat that LED lamp 31 produced through heat conduction glue 20 to avoid burning out of lamp plate 30 among the backlight unit.
Referring to fig. 5, the backlight material 60 includes a diffusion plate 61, a light splitting film 62, a diffusion film 63, a lower light enhancement film 64, a middle light enhancement film 65 and a peep-proof film 66 which are sequentially arranged on the die casting 10 from bottom to top, and the diffusion plate 61 sufficiently scatters light emitted by the LED lamp 31, so that the light emitted by the backlight module is softer, and the irradiation effect of the backlight module is improved; the light splitting film 62 can reduce stray light and improve optical efficiency; the diffusion film 63 uniformly emits the light rays sorted by the light splitting film 62 outwards; the lower and middle brightness enhancement films 64 and 65 enhance the light emitted from the diffusion film 63, thereby enhancing the optical effect of the illumination.
Referring to fig. 7, 8 and 9, the diffusion plate 61 includes an edge portion 611 and a central portion 612, the edge portion 611 is integrated with the central portion 612, the thickness of the edge portion 611 is less than that of the central portion 612, wherein the thickness difference between the edge portion 611 and the central portion 612 is 0.3mm, and the thickness gradually decreases from the central portion 612 to the edge portion 611, so that the transmittance of the edge portion 611 is improved, thereby improving the brightness at the edge portion 611 of the backlight module, and improving the surface uniformity and the overall image quality of the backlight module.
The implementation principle of the backlight module in the embodiment of the application is as follows: the even bowl 40 of leaded light uses with the cooperation of diffuser plate 61, the thickness of edge portion 611 of diffuser plate 61 is less than the thickness of central part 612, make the even the giving off of light that LED lamp 31 sent on the lamp plate 30 through diffuser plate 61, light loops through beam splitting membrane 62, diffuser membrane 63, lower beam enhancement membrane 64, well beam enhancement membrane 65 and peep-proof membrane 66, filter miscellaneous light, strengthen light, thereby promote the holistic face homogeneity of backlight unit, promote backlight unit's whole painting feel simultaneously.
The above are preferred embodiments of the present application, and the scope of protection of the present application is not limited thereto, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (10)
1. The utility model provides a reflector structure that leaded light is even, its characterized in that includes: the LED lamp comprises a reflector base plate (41) and a plurality of lamp cups (42) arranged on the reflector base plate (41), wherein each lamp cup (42) comprises a first lamp cup (43), a second lamp cup (44) and a center lamp cup (45), the first lamp cup (43) is arranged at the outermost edge of the reflector base plate (41), the second lamp cup (44) is arranged adjacent to the first lamp cup (43), the center lamp cup (45) is arranged adjacent to the second lamp cup (44), the height of the first lamp cup (43) is lower than that of the second lamp cup (44), and the height of the second lamp cup (44) is lower than that of the center lamp cup (45);
the included angle between adjacent first lamp cup (43) is first included angle (46), and is adjacent the included angle between second lamp cup (44) is second included angle (47), and is adjacent the included angle between center lamp cup (45) is third included angle (48), first included angle (46) is greater than second included angle (47), second included angle (47) is greater than third included angle (48).
2. The light-guiding uniform reflector structure according to claim 1, wherein the first lamp cup (43) comprises a first side wall (432) and a first bottom wall (431), an included angle between the first side wall (432) and the first bottom wall (431) is a first inner included angle (433), the second lamp cup (44) comprises a second side wall (442) and a second bottom wall (441), an included angle between the second side wall (442) and the second bottom wall (441) is a second inner included angle (443), the center lamp cup (45) comprises a third side wall (452) and a third bottom wall (451), an included angle between the third side wall (452) and the third bottom wall (451) is a third inner included angle (453), the first inner included angle (433) is greater than the second inner included angle (443), and the second inner angle (443) is greater than the third inner included angle (453).
3. The structure of claim 1, wherein the first included angle (46) is between 115 ° and 120 °, the second included angle (47) is between 82 ° and 90 °, and the third included angle (48) is between 60 ° and 70 °.
4. The light-guiding uniform reflector structure of claim 2, wherein the first inner angle (433) is between 145 ° and 155 °, the second inner angle (443) is between 130 ° and 140 °, and the third inner angle (453) is between 80 ° and 90 °.
5. The light-directing uniform reflector structure of claim 1, wherein a height difference between the first lamp cup (43) and the second lamp cup (44) is equal to a height difference between the center lamp cup (45) and the second lamp cup (44).
6. The light-guiding uniform reflector structure of claim 5, wherein the height difference between the first lamp cup (43) and the second lamp cup (44) is between 0.5mm and 1 mm.
7. A backlight module, comprising a die casting (10) and a middle iron frame (70), wherein the die casting (10) is detachably connected with the middle iron frame (70), a lamp panel (30) and a diffusion plate (61) are sequentially arranged between the die casting (10) and the middle iron frame (70) from bottom to top, a reflector (40) as claimed in any one of claims 1 to 6 is arranged between the lamp panel (30) and the diffusion plate (61), and the reflector (40) is used for controlling the divergence direction of light rays so as to lead the light rays into the diffusion plate (61).
8. A backlight module according to claim 7, characterized in that the diffuser plate (61) comprises an edge portion (611) and a central portion (612), the edge portion (611) and the central portion (612) being integrally provided, the thickness of the edge portion (611) being lower than the thickness of the central portion (612).
9. The backlight module according to claim 7, wherein a reflector fixing glue (50) is disposed between the reflector (40) and the lamp panel (30), and the reflector fixing glue (50) is used for reinforcing fixation between the reflector (40) and the lamp panel (30).
10. The backlight module according to claim 7, wherein the lamp panel (30) is provided with a plurality of LED lamps (31), the reflector (40) is provided with lamp cups (42), the LED lamps (31) and the lamp cups (42) are arranged in a one-to-one correspondence manner, heat-conducting glue (20) is arranged between the lamp panel (30) and the die casting (10), and the heat-conducting glue (20) is used for guiding out heat emitted by the LED lamps (31).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211595733.5A CN115933251B (en) | 2022-12-13 | Reflection cover structure with uniform light guide and backlight module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211595733.5A CN115933251B (en) | 2022-12-13 | Reflection cover structure with uniform light guide and backlight module |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115933251A true CN115933251A (en) | 2023-04-07 |
| CN115933251B CN115933251B (en) | 2024-07-02 |
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