CN111856816A - Direct type backlight module and display device - Google Patents
Direct type backlight module and display device Download PDFInfo
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- CN111856816A CN111856816A CN202010836822.9A CN202010836822A CN111856816A CN 111856816 A CN111856816 A CN 111856816A CN 202010836822 A CN202010836822 A CN 202010836822A CN 111856816 A CN111856816 A CN 111856816A
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- 238000009792 diffusion process Methods 0.000 claims abstract description 78
- 238000009434 installation Methods 0.000 claims abstract description 22
- 239000012788 optical film Substances 0.000 claims description 14
- 239000013013 elastic material Substances 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 12
- 230000001595 contractor effect Effects 0.000 description 9
- 230000017525 heat dissipation Effects 0.000 description 9
- 230000003287 optical effect Effects 0.000 description 9
- 239000000463 material Substances 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 239000010408 film Substances 0.000 description 3
- 238000005286 illumination Methods 0.000 description 3
- 239000004973 liquid crystal related substance Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000004831 Hot glue Substances 0.000 description 2
- -1 acryl Chemical group 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 230000008602 contraction Effects 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
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Classifications
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- 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
- G02F1/133605—Direct backlight including specially adapted reflectors
-
- 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
- G02F1/133608—Direct backlight including particular frames or supporting means
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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)
- Planar Illumination Modules (AREA)
Abstract
The invention discloses a direct type backlight module, which comprises a diffusion plate, a reflecting plate, a plurality of light sources, a plurality of supports and a plurality of cushion pads. The reflecting plate is arranged below the diffusing plate and spaced from the diffusing plate, the light source is arranged between the diffusing plate and the reflecting plate, and the support is arranged on the reflecting plate and positioned between the diffusing plate and the reflecting plate for simultaneously supporting the diffusing plate and the light source. The support is provided with an installation part, the light source directly penetrates through the installation part, a first gap is arranged between the support and the diffusion plate, and a second gap is arranged between the installation part and the light source. The cushion pads are respectively filled in the first gap and the second gap.
Description
Technical Field
The present invention relates to a direct type backlight module and a display device, and more particularly, to a direct type backlight module and a display device capable of preventing a diffuser plate and a light source from being deformed due to thermal expansion and cold contraction effects of a support without affecting optical characteristics.
Background
With the rapid progress of Liquid Crystal Display (LCD) manufacturing technology and the advantages of being light, thin, power-saving, and radiation-free, LCD displays are widely used in various electronic products such as Personal Digital Assistants (PDAs), notebook computers, digital cameras, digital camcorders, mobile phones, computer screens, and liquid crystal televisions. However, since the lcd panel in the lcd is a non-self-luminous display panel, the display function can be generated only by the light source provided by the backlight module.
The direct type backlight module comprises a diffusion plate, a reflection plate and a plurality of light sources, wherein the light sources are lighting tubes for example. In order to support the diffuser plate in the direct-type backlight module, a plurality of supports are usually disposed between the reflective plate and the diffuser plate to prevent the diffuser plate from warping and deforming to deteriorate the optical characteristics of the direct-type backlight module, and even to press off the illumination lamp. However, as the size of the LCD panel is larger, the size of the illumination tube is also relatively larger or longer, and thus the illumination tube is deformed, which affects the optical characteristics of the entire direct-type backlight module.
Therefore, if a direct-type backlight module and a display device capable of preventing the diffuser plate and the light source from being deformed due to the expansion and contraction effect of the support without affecting the optical characteristics can be provided, a significant breakthrough will be brought to the technology in this field.
Disclosure of Invention
Accordingly, the present invention is directed to a direct type backlight module, which can prevent the diffuser plate and the light source from being deformed due to the expansion and contraction effect of the support without affecting the optical characteristics.
The invention provides a direct type backlight module, which comprises a diffusion plate, a reflection plate, a plurality of light sources, a plurality of supports and a plurality of cushion pads. The reflecting plate is arranged below the diffusing plate and spaced from the diffusing plate, the light source is arranged between the diffusing plate and the reflecting plate, and the support is arranged on the reflecting plate and positioned between the diffusing plate and the reflecting plate for simultaneously supporting the diffusing plate and the light source. The support is provided with an installation part, the light source directly penetrates through the installation part, a first gap is arranged between the support and the diffusion plate, and a second gap is arranged between the installation part and the light source. The cushion pads are respectively filled in the first gap and the second gap.
In one embodiment, the cushion pad is made of an elastic material.
In one embodiment, the cushion is a first cushion and a second cushion, the first cushion is ring-shaped, and the second cushion is sheet-shaped.
In one embodiment, the reflector has a groove, and the support has a locking portion locked in the groove.
In one embodiment, the mounting portion is annular.
In one embodiment, the support is rectangular.
In one embodiment, the direct-type backlight module further includes a diffusion sheet disposed on the diffusion plate.
In one embodiment, the direct-type backlight module further includes an optical film disposed on the diffuser plate.
The invention also provides a direct type backlight module, which comprises a diffusion plate, a reflecting plate, a plurality of light sources, a plurality of supports and a plurality of cushion pads. The reflecting plate is arranged below the diffusing plate and spaced from the diffusing plate, the light source is arranged between the diffusing plate and the reflecting plate, and the support is arranged on the reflecting plate and positioned between the diffusing plate and the reflecting plate for simultaneously supporting the diffusing plate and the light source. The support is provided with an installation part, the light source directly penetrates through the installation part, a first gap is arranged between the support and the diffusion plate, and a second gap is arranged between the installation part and the light source. The buffer pads are respectively a first buffer pad and a second buffer pad and are respectively filled in the first gap and the second gap, the first buffer pad is annular, the second buffer pad is sheet-shaped, and the first buffer pad and the second buffer pad are made of elastic materials.
The invention also provides a display device, which comprises a display panel and a direct-type backlight module. The direct type backlight module comprises a diffusion plate, a reflection plate, a plurality of light sources, a plurality of supports and a plurality of cushion pads. The reflecting plate is arranged below the diffusing plate and spaced from the diffusing plate, the light source is arranged between the diffusing plate and the reflecting plate, and the support is arranged on the reflecting plate and positioned between the diffusing plate and the reflecting plate for simultaneously supporting the diffusing plate and the light source. The support is provided with an installation part, the light source directly penetrates through the installation part, a first gap is arranged between the support and the diffusion plate, and a second gap is arranged between the installation part and the light source. The cushion pads are respectively filled in the first gap and the second gap.
In summary, the direct type backlight module of the present invention can effectively prevent the diffuser plate and the light source from being deformed due to the expansion and contraction effect of the support and the cushion pad without affecting the optical characteristics.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort. In the drawings:
FIG. 1 is a schematic view of a direct-type backlight module according to an embodiment of the present invention.
FIG. 2 is another schematic view of a direct-type backlight module according to an embodiment of the present invention.
FIG. 3 is a schematic diagram of a display device according to an embodiment of the present invention.
FIG. 4 is another schematic view of a direct-type backlight module according to an embodiment of the present invention.
FIG. 5 is another schematic view of a direct-type backlight module according to an embodiment of the present invention.
FIG. 6 is a diagram of a display device according to an embodiment of the present invention.
FIG. 7 is another schematic view of a direct-type backlight module according to an embodiment of the present invention.
FIG. 8 is another schematic view of a direct-type backlight module according to an embodiment of the present invention.
FIG. 9 is a diagram of a display device according to an embodiment of the present invention.
Detailed Description
Specific structural and functional details disclosed herein are merely representative and are provided for purposes of describing example embodiments of the present invention. The present invention may, however, be embodied in many alternate forms and should not be construed as limited to only the embodiments set forth herein.
In the description of the present invention, it is to be understood that the terms "center", "lateral", "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless otherwise specified. Furthermore, the term "comprises" and any variations thereof is intended to cover non-exclusive inclusions.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used herein, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
Embodiments of the direct type backlight module according to the present invention will be described below with reference to the accompanying drawings, wherein like elements are denoted by like reference numerals.
Fig. 1 is a schematic diagram of a direct type backlight module 1 according to an embodiment of the present invention. FIG. 2 is another schematic diagram of a direct-type backlight module 1 according to an embodiment of the present invention. FIG. 3 is a schematic diagram of a display device according to an embodiment of the present invention. FIG. 4 is another schematic diagram of a direct-type backlight module 2 according to an embodiment of the present invention. FIG. 5 is another schematic diagram of a direct-type backlight module 2 according to an embodiment of the present invention. FIG. 6 is a diagram of a display device according to an embodiment of the present invention. FIG. 7 is another schematic diagram of a direct-type backlight module 3 according to an embodiment of the present invention. FIG. 8 is another schematic diagram of a direct-type backlight module 3 according to an embodiment of the present invention. FIG. 9 is a diagram of a display device according to an embodiment of the present invention.
Referring to fig. 1 and 2, the direct-type backlight module 1 includes a diffuser 11, a reflector 12, a plurality of light sources 13, a plurality of supports 14, and a plurality of cushions 15. The reflection plate 12 is disposed below the diffusion plate 11 and spaced apart from the diffusion plate 11. The light source 13 is disposed between the diffusion plate 11 and the reflection plate 12. The supporter 14 is disposed on the reflective plate 12 and between the diffusion plate 11 and the reflective plate 12 for supporting the diffusion plate 11 and the light source 13. The support 14 has a mounting portion 141, the light source 13 is directly disposed in the mounting portion 141, a first gap G1 is formed between the support 14 and the diffusion plate 11, and a second gap G2 is formed between the mounting portion 141 and the light source 13. The cushion pad 15 is filled in the first gap G1 and the second gap G2, respectively. Specifically, piercing means that an object penetrates and is disposed on another object. In the present embodiment, the light source 13 penetrates the mounting portion 141 and is disposed at the mounting portion 141.
In the present embodiment, since the cushion pads 15 are filled in the first gap G1 and the second gap G2, the deformation of the diffusion plate 11 and the light source 13 caused by the thermal expansion and contraction effect of the support 14 can be prevented.
In the present embodiment, the support 14 is made of a transparent material. Therefore, no shadow is generated when the light source 13 emits light.
In the present embodiment, the cushion pad 15 is made of an elastic material, such as rubber or foam, but not limited thereto.
In this embodiment, the cushion 15 is a first cushion 151 and a second cushion 152, respectively, the first cushion 151 is in a ring shape, and the second cushion 152 is in a sheet shape. That is, the first cushion 151 is shaped to fit the second gap G2, and the second cushion 152 is shaped to fit the first gap G1. Thus, the mounting portion 141 is annular.
In this embodiment, the reflective plate 12 has a groove 121, the support 14 further has a locking portion 142, the locking portion 142 is locked in the groove 121, and then the locking portion 142 can be firmly fixed in the groove 121 by using hot melt adhesive.
In the present embodiment, the support 14 is rectangular. Alternatively, the support 14 may be shaped in various forms, such as a polygon and a circular arc, in cooperation with the mounting portion 141 and the light source 13.
In the present embodiment, the material of the support 14 can be a light-weight and high-strength plastic material (such as acryl), so that the weight of the direct-type backlight module 1 is not greatly increased.
In the present embodiment, the light source 13 is, for example, an LED tube, an LED light bar, or other light sources. The LED lamp strip is formed by arranging a plurality of LEDs with small volumes on a circuit board. In one embodiment, a heat dissipation adhesive or a heat dissipation film may be disposed around the light source 13 to increase heat dissipation efficiency.
In this embodiment, the direct-type backlight module 1 may further include a diffusion sheet 16 and an optical film 17. In an embodiment, the number of the diffusion sheets 16 and the optical films 17 may be deleted or increased according to the requirement, and the arrangement sequence may also be adjusted according to the requirement, and the invention is not limited thereto. In this embodiment, the diffusion sheet 16 includes a first diffusion sheet 161 and a second diffusion sheet 162, in which the first diffusion sheet 161 is disposed on the diffusion plate 11, the optical film 17 is disposed on the first diffusion sheet 161 and between the first diffusion sheet 161 and the second diffusion sheet 162, and the second diffusion sheet 162 is disposed on the optical film 17.
As shown in fig. 1 and 2, the direct-type backlight module 1 of the present invention can effectively prevent the diffuser 11 and the light source 13 from being deformed by the expansion and contraction effect of the support 14 due to heat and contraction due to the design of the support 14 and the cushion 15 without affecting the optical characteristics.
Referring to fig. 3, the present invention further provides a display device 10, which includes a display panel 18 and a direct-type backlight module 1 as described above.
Referring to fig. 4 and 5, the direct-type backlight module 2 includes a diffuser 21, a reflector 22, and a plurality of light sources 23. The reflective plate 22 is disposed below the diffusion plate 21 and spaced apart from the diffusion plate 21, the reflective plate 22 has a convex pillar 221, the convex pillar 221 is disposed adjacent to the diffusion plate 21, and the convex pillar 221 has an installation portion 2211. The light source 23 is disposed through the mounting portion 2211, and the convex pillar 221 is used for supporting the diffusion plate 21 and the light source 23 at the same time.
In the present embodiment, the convex pillar 221 and the reflective plate 22 are integrally formed. Therefore, the convex pillar 221 is integrated into the reflective plate 22, so that the process can be simplified and the manufacturing cost can be reduced.
In the present embodiment, the protruding pillar 221 is rectangular. Alternatively, the protrusion 221 may be formed in different shapes, such as a polygon and a circular arc, with the mounting portion 2211 and the light source 23. The mounting portion 2211 may also have various shapes, such as a rectangular shape or a U-shape, and the present invention is not limited thereto.
In the present embodiment, a first gap G1 'is provided between the protruding pillar 221 and the diffusion plate 21, and a second gap G2' is provided between the mounting portion 2211 and the light source 23, so as to prevent the protruding pillar 221 from deforming the diffusion plate 21 and the light source 23 due to the thermal expansion and contraction effect. The first gap G1 'is sheet-shaped, the second gap G2' is ring-shaped, and the mounting portion 2211 is also ring-shaped.
In the present embodiment, the light source 23 is, for example, an LED tube, an LED light bar, or other light sources. The LED lamp strip is formed by arranging a plurality of LEDs with small volumes on a circuit board. In one embodiment, a heat dissipation adhesive or a heat dissipation film may be disposed around the light source 23 to increase the heat dissipation efficiency.
In this embodiment, the direct-type backlight module 2 may further include a diffusion sheet 24 and an optical film 25. In an embodiment, the number of the diffusion sheets 24 and the optical films 25 may be deleted or increased according to the requirement, and the arrangement sequence may also be adjusted according to the requirement, and the invention is not limited thereto. In this embodiment, the diffusion sheet 24 includes a first diffusion sheet 241 and a second diffusion sheet 242, wherein the first diffusion sheet 241 is disposed on the diffusion plate 21, the optical film 25 is disposed on the first diffusion sheet 241 and between the first diffusion sheet 241 and the second diffusion sheet 242, and the second diffusion sheet 242 is disposed on the optical film 25.
As shown in fig. 4 and 5, the direct-type backlight module 2 of the present invention has a design that the reflection plate 22 has the convex pillars 221 to support the diffusion plate 21 and the light source 23 at the same time, so as to effectively prevent the diffusion plate 21 and the light source 23 from being deformed without affecting the optical characteristics. In addition, since the convex pillar 221 is integrated into the reflective plate 22, the process can be simplified and the manufacturing cost can be reduced.
Referring to fig. 6, the present invention further provides a display device 20 including a display panel 26 and a direct-type backlight module 2 as described above.
Referring to fig. 7 and 8, the direct-type backlight module 3 includes a diffuser 31, a reflector 32, a plurality of light sources 33, and a plurality of supports 34. The diffuser plate 31 has a concave portion 311, and the concave portion 311 has a concave surface 3111. The reflector 32 is disposed under the diffuser 31 and spaced apart from the diffuser 31, the light source 33 is disposed between the diffuser 31 and the reflector 32, and the supporter 34 is disposed on the reflector 32 and between the diffuser 31 and the reflector 32 for supporting the diffuser 31 and the light source 33. The support 34 has a mounting portion 341, the light source 33 is directly disposed in the mounting portion 341, the support 34 further has a top wall 342 disposed in the recess 311, and a first gap G1 ″ is formed between the top wall 342 and the recess surface 3111.
In the present embodiment, the height of the first gap G1 "is smaller than the height of the diffusion plate 31. The height of the first gap G1 ″ can be set according to practical situations, and is not limited herein.
In the present embodiment, a second gap G2 ″ is provided between the mounting portion 341 and the light source 33. The height of the second gap G2 ″ can be set according to practical situations, and is not limited herein. The first gap G1 'and the second gap G2' can prevent the support 34 from deforming the diffusion plate 31 and the light source 33 due to the thermal expansion and contraction effect. The first gap G1 ″ is sheet-shaped, the second gap G2 ″ is ring-shaped, and the mounting portion 341 is also ring-shaped. Alternatively, in other embodiments, the shape of the mounting portion 341 may also be changed corresponding to the shape of the light source 33, such as a rectangle or a U shape, and the present invention is not limited thereto.
In the embodiment, the reflection plate 32 has a groove 321, and the support 34 further has a locking portion 343, the locking portion 343 is locked in the groove 321, and then the locking portion 343 can be firmly fixed in the groove 321 by using hot melt adhesive.
In the present embodiment, the support 34 is rectangular. Alternatively, the support 34 may be shaped in various forms, such as a polygon and a circular arc, with the mounting portion 341 and the light source 33.
In the present embodiment, the material of the support 34 can be a light-weight and high-strength plastic material (such as acryl), so that the weight of the direct-type backlight module 3 is not greatly increased.
In the present embodiment, the light source 33 is, for example, an LED tube, an LED light bar, or other light sources. The LED lamp strip is formed by arranging a plurality of LEDs with small volumes on a circuit board. In one embodiment, a heat dissipation adhesive or a heat dissipation film may be disposed around the light source 33 to increase the heat dissipation efficiency.
In this embodiment, the direct-type backlight module 3 may further include a diffusion sheet 35 and an optical film 36. In an embodiment, the number of the diffusion sheets 35 and the optical films 36 may be deleted or increased according to the requirement, and the arrangement sequence may also be adjusted according to the requirement, and the invention is not limited thereto. In this embodiment, the diffusion sheet 35 includes a first diffusion sheet 351 and a second diffusion sheet 352, wherein the first diffusion sheet 351 is disposed on the diffusion plate 31, the optical film 36 is disposed on the first diffusion sheet 351 and between the first diffusion sheet 351 and the second diffusion sheet 352, and the second diffusion sheet 352 is disposed on the optical film 36.
As shown in fig. 7 and 8, in the direct-type backlight module 3 of the present invention, the diffuser plate 31 has the recessed portion 311, the top wall 342 of the supporter 34 is located in the recessed portion 311, and the first gap G1 ″ is formed between the top wall 342 and the recessed surface 3111, so that the supporter 34 can be effectively prevented from deforming the diffuser plate 31 and the light source 33 due to the expansion and contraction effect without affecting the optical characteristics.
Referring to fig. 9, the present invention further provides a display device 30, which includes a display panel 37 and a direct-type backlight module 3 as described above.
In some embodiments, the display panel is, for example, a liquid crystal display panel, a curved display panel, or other display panel.
The foregoing is a more detailed description of the present invention that is presented in conjunction with specific embodiments, and the practice of the invention is not to be considered limited to those descriptions. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.
Claims (10)
1. A direct type backlight module, comprising:
a diffusion plate;
the reflecting plate is arranged below the diffusion plate and is spaced from the diffusion plate;
a plurality of light sources disposed between the diffusion plate and the reflection plate;
the support is provided with an installation part, the light source directly penetrates through the installation part, a first gap is arranged between the support and the diffusion plate, and a second gap is arranged between the installation part and the light source; and
and the buffer pads are respectively filled in the first gap and the second gap.
2. The direct type backlight module according to claim 1, wherein the cushion is made of an elastic material.
3. The direct type backlight module of claim 1, wherein the buffer pads are a first buffer pad and a second buffer pad, respectively, the first buffer pad is ring-shaped, and the second buffer pad is sheet-shaped.
4. The direct type backlight module according to claim 1, wherein the reflective plate has a groove, and the supporter further has a locking portion, and the locking portion is locked in the groove.
5. The direct type backlight module according to claim 1, wherein the mounting portion is ring-shaped.
6. The direct type backlight module according to claim 1, wherein the supporter is rectangular.
7. The direct type backlight module of claim 1, further comprising a diffusion sheet disposed on the diffusion plate.
8. The direct type backlight module of claim 1, further comprising an optical film disposed on the diffuser plate.
9. A direct type backlight module, comprising:
a diffusion plate;
the reflecting plate is arranged below the diffusion plate and is spaced from the diffusion plate;
a plurality of light sources disposed between the diffusion plate and the reflection plate;
the support is provided with an installation part, the light source directly penetrates through the installation part, a first gap is arranged between the support and the diffusion plate, and a second gap is arranged between the installation part and the light source; and
the buffer cushions are respectively a first buffer cushion and a second buffer cushion and are respectively filled in the first gap and the second gap, the first buffer cushion is annular, the second buffer cushion is sheet-shaped, and the first buffer cushion and the second buffer cushion are made of elastic materials.
10. A display device, characterized in that the display device comprises:
a display panel;
a backlight module of the following formula, comprising:
a diffusion plate;
the reflecting plate is arranged below the diffusion plate and is spaced from the diffusion plate;
a plurality of light sources disposed between the diffusion plate and the reflection plate;
the support is provided with an installation part, the light source directly penetrates through the installation part, a first gap is arranged between the support and the diffusion plate, and a second gap is arranged between the installation part and the light source; and
and the buffer pads are respectively filled in the first gap and the second gap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010836822.9A CN111856816A (en) | 2020-08-19 | 2020-08-19 | Direct type backlight module and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010836822.9A CN111856816A (en) | 2020-08-19 | 2020-08-19 | Direct type backlight module and display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111856816A true CN111856816A (en) | 2020-10-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010836822.9A Pending CN111856816A (en) | 2020-08-19 | 2020-08-19 | Direct type backlight module and display device |
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|---|---|
| CN (1) | CN111856816A (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW567291B (en) * | 2002-07-19 | 2003-12-21 | Au Optronics Corp | Direct type backlight module |
| CN1549029A (en) * | 2003-05-21 | 2004-11-24 | 友达光电股份有限公司 | Backlight module and liquid crystal display device |
| CN1696795A (en) * | 2005-06-21 | 2005-11-16 | 友达光电股份有限公司 | Backing Module of liquid crystal display and supporing stucture |
| US20050270803A1 (en) * | 2004-06-08 | 2005-12-08 | Chi Lin Technology Co., Ltd. | Supporting structure of straight down back light module |
| TW200722841A (en) * | 2005-12-08 | 2007-06-16 | Chi Mei Optoelectronics Corp | Monolithically formed reflection device and backlight unit and LCD device with the reflection device |
| CN101187750A (en) * | 2006-11-15 | 2008-05-28 | 中华映管股份有限公司 | Plane display and its backlight module |
| CN101303474A (en) * | 2007-05-09 | 2008-11-12 | 奇美电子股份有限公司 | Backlight module, LCD device and method for manufacturing LCD device |
| JP2009140712A (en) * | 2007-12-05 | 2009-06-25 | Nippon Zeon Co Ltd | Direct backlight device |
| CN201688266U (en) * | 2010-05-26 | 2010-12-29 | 福州华映视讯有限公司 | Sidelight-type backlight module |
| CN201935125U (en) * | 2010-12-22 | 2011-08-17 | 北京京东方光电科技有限公司 | Diffusion plate support and direct type backlight with same |
| CN202546475U (en) * | 2012-02-01 | 2012-11-21 | 苏州世鼎电子有限公司 | LED (Light-Emitting Diode) backlight module using back panel of liquid crystal display as cover body |
| US20200096821A1 (en) * | 2017-03-29 | 2020-03-26 | Sharp Kabushiki Kaisha | Planar lighting device and display device |
-
2020
- 2020-08-19 CN CN202010836822.9A patent/CN111856816A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW567291B (en) * | 2002-07-19 | 2003-12-21 | Au Optronics Corp | Direct type backlight module |
| CN1549029A (en) * | 2003-05-21 | 2004-11-24 | 友达光电股份有限公司 | Backlight module and liquid crystal display device |
| US20050270803A1 (en) * | 2004-06-08 | 2005-12-08 | Chi Lin Technology Co., Ltd. | Supporting structure of straight down back light module |
| CN1696795A (en) * | 2005-06-21 | 2005-11-16 | 友达光电股份有限公司 | Backing Module of liquid crystal display and supporing stucture |
| TW200722841A (en) * | 2005-12-08 | 2007-06-16 | Chi Mei Optoelectronics Corp | Monolithically formed reflection device and backlight unit and LCD device with the reflection device |
| CN101187750A (en) * | 2006-11-15 | 2008-05-28 | 中华映管股份有限公司 | Plane display and its backlight module |
| CN101303474A (en) * | 2007-05-09 | 2008-11-12 | 奇美电子股份有限公司 | Backlight module, LCD device and method for manufacturing LCD device |
| JP2009140712A (en) * | 2007-12-05 | 2009-06-25 | Nippon Zeon Co Ltd | Direct backlight device |
| CN201688266U (en) * | 2010-05-26 | 2010-12-29 | 福州华映视讯有限公司 | Sidelight-type backlight module |
| CN201935125U (en) * | 2010-12-22 | 2011-08-17 | 北京京东方光电科技有限公司 | Diffusion plate support and direct type backlight with same |
| CN202546475U (en) * | 2012-02-01 | 2012-11-21 | 苏州世鼎电子有限公司 | LED (Light-Emitting Diode) backlight module using back panel of liquid crystal display as cover body |
| US20200096821A1 (en) * | 2017-03-29 | 2020-03-26 | Sharp Kabushiki Kaisha | Planar lighting device and display device |
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Application publication date: 20201030 |