CN106773302B - Backlight module and liquid crystal display - Google Patents
Backlight module and liquid crystal display Download PDFInfo
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- CN106773302B CN106773302B CN201611257023.6A CN201611257023A CN106773302B CN 106773302 B CN106773302 B CN 106773302B CN 201611257023 A CN201611257023 A CN 201611257023A CN 106773302 B CN106773302 B CN 106773302B
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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
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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
- G02F1/133603—Direct backlight with LEDs
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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
- G02F1/133605—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
- G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
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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
- G02F1/133608—Direct backlight including particular frames or supporting means
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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
- G02F1/133628—Illuminating devices with cooling 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 provides a backlight module which comprises a back plate, a diffusion plate and N backlight units. The diffusion plate is arranged above the N backlight units to adjust the light emitted by the N backlight units into a uniform surface light source. N partition units are formed on the back plate, one backlight unit is arranged in each partition unit, and each backlight unit comprises a light guide plate, a light bar and a heat dissipation support piece. The lamp strip is provided with a plurality of lamp strings in parallel connection. The lamp strip is located on one side of the light guide plate and arranged on the heat dissipation support piece. The heat dissipation support piece is fixed on the back plate. The invention can realize ultra-thin HDR design and meet the requirement of the industry. The invention also provides a liquid crystal display.
Description
Technical Field
The invention relates to the field of manufacturing of liquid crystal displays, in particular to a backlight module and a liquid crystal display.
Background
In recent years, with the stick of high dynamic range imaging (HDR) technology, the HDR technology is increasingly applied to the fields of digital photography, film art, television sets, and the like. To implement HDR technology in a television, special technical requirements are placed on the television backlight, and the television backlight application can implement block control. The backlight module of direct type incidence light can be easily subjected to zone control, but the direct type backlight needs a certain light mixing height, so that the reduction of the overall thickness of the module is limited, the ultra-thin HDR design cannot be realized, and the requirements of the industry cannot be met.
Disclosure of Invention
The invention provides a backlight module and a liquid crystal display, which are used for reducing the thickness of the backlight module so as to meet the requirement of the industry on an ultrathin HDR technology.
The invention provides a backlight module, which comprises a back plate, a diffusion plate and N backlight units, wherein the diffusion plate is arranged above the N backlight units to adjust light emitted by the N backlight units into a uniform surface light source, N partition units are formed on the back plate, one backlight unit is arranged in one partition unit, each backlight unit comprises a light guide plate, a light bar and a heat dissipation support piece, a plurality of light strings in parallel connection are arranged on the light bar, the light bar is positioned on one side of the light guide plate and arranged on the heat dissipation support piece, and the heat dissipation support piece is fixed on the back plate.
The heat dissipation support piece comprises a heat dissipation portion, a support portion and a fixing portion, the support portion is arranged at the top of the heat dissipation portion, the fixing portion is arranged at the bottom of the heat dissipation portion, the lamp strip is arranged at the heat dissipation portion, the fixing portion is arranged on the back plate and used for fixing the heat dissipation support piece on the back plate, the support portion is located above the lamp strip to shade, when the light guide plates are arranged on two sides of the heat dissipation support piece, the support portion is abutted to the light guide plates on two sides of the heat dissipation support piece to limit, when one side of the heat dissipation support piece is a light guide plate, and the other side of the heat dissipation support piece is a frame of the back plate, the corresponding light guide plate and the frame.
The supporting part of the heat dissipation supporting part is provided with a reflector plate, the distance from the top surface of the light guide plate to the supporting part is a first distance, the distance from the top surface of the light guide plate to the reflector plate is a second distance, and the first distance is larger than the second distance.
Wherein the second distance is greater than or equal to 0.5 mm.
The fixing part of the heat dissipation support piece is fixed on the back plate through an adhesive.
Wherein, the heat dissipation support piece is the aluminium panel beating.
The diffusion plate is fixed on the top surface of the frame, so that the diffusion plate is arranged above the N backlight units, and the diffusion plate and the light guide plate have the preset distance.
The invention also provides a liquid crystal display which comprises a liquid crystal panel and the backlight module, wherein the backlight module provides planar light for the liquid crystal panel to enable the liquid crystal panel to display images.
The backlight module comprises a back plate, a diffusion plate and N backlight units. The diffusion plate is arranged above the N backlight units to adjust the light emitted by the N backlight units into a uniform surface light source. N partition units are formed on the back plate, one backlight unit is arranged in each partition unit, and each backlight unit comprises a light guide plate, a light bar and a heat dissipation support piece. The lamp strip is provided with a plurality of lamp strings in parallel connection. The lamp strip is located on one side of the light guide plate and arranged on the heat dissipation support piece. The heat dissipation support piece is fixed on the back plate. Because a plurality of light strings in parallel relation are connected in parallel. The parallel connection of the lamp strings can be controlled independently, so that the LED lamps can be controlled in a partitioned mode. Meanwhile, the lamp strip is positioned on one side of the light guide plate, so that the backlight module is a side-in type backlight module. Because the lateral type module can realize the backlight module with thinner thickness than the direct type module, the backlight module can realize the ultrathin HDR design, thereby meeting the needs of the industry.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a cross-sectional view of a backlight module according to a first embodiment of the present invention.
Fig. 2 is an enlarged view of adjacent two light guide plate portions in fig. 1.
Fig. 3 is a block diagram of a liquid crystal display according to a second embodiment of the invention.
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. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Furthermore, the following description of the various embodiments refers to the accompanying drawings, which illustrate specific embodiments in which the invention may be practiced. Directional phrases used in this disclosure, such as, for example, "upper," "lower," "front," "rear," "left," "right," "inner," "outer," "side," and the like, refer only to the orientation of the appended drawings and are, therefore, used herein for better and clearer illustration and understanding of the invention, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.
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 being fixedly connected, detachably connected, or integrally connected; may be a mechanical connection; 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.
In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified. In the present specification, the term "step" is used to mean not only an independent step but also an independent step unless clearly distinguished from other steps, as long as the intended function of the step is achieved. In the present specification, the numerical range represented by "to" means a range including numerical values before and after "to" as a minimum value and a maximum value, respectively. In the drawings, structures that are similar or identical are denoted by the same reference numerals.
Referring to fig. 1, a backlight module 100 according to a first embodiment of the present invention is provided. The backlight module 100 includes a back plate 10, a diffusion plate 20, and N backlight units 30. The diffusion plate 20 is disposed above the N backlight units 30 to adjust the light emitted from the N backlight units 30 into a uniform surface light source. The back plate 10 is formed with N partition units, one backlight unit 30 is disposed in each partition unit, and each backlight unit 30 includes a light guide plate 31, a light bar 32, and a heat dissipation support 33. The light bar 32 is provided with a plurality of light strings 34 in parallel relationship. The light bar 32 is located at one side of the light guide plate 31 and disposed on the heat dissipation support 33. The heat dissipation supporting member 33 is fixed on the back plate 10.
It should be noted that the heat dissipation supporting member 33 is used for dissipating heat of the LED lamp on the light bar 32. The light string 34 is a series of LED lights. A plurality of strings 34 in a parallel relationship are connected in parallel. The parallel connection of the lamp strings can be controlled independently, so that the LED lamps can be controlled in a partitioned mode. Meanwhile, the light bar 32 is located at one side of the light guide plate 31, so that the backlight module 100 is a side-in type backlight module. Since the lateral type backlight module can realize a thinner thickness than the direct type backlight module, the backlight module 100 can realize an ultra-thin HDR design, thereby satisfying the needs of the industry.
Referring to fig. 2, the heat dissipation support 33 includes a heat dissipation portion 331, a support portion 332, and a fixing portion 333. The support portion 332 is disposed on the top of the heat dissipation portion 331. The fixing portion 333 is disposed at the bottom of the heat dissipating portion 331. The light bar 32 is disposed on the heat dissipation portion 331. The fixing portion 333 is disposed on the backplate 10, and is used for fixing the heat dissipation supporting member 30 on the backplate 10. The supporting portion 332 is located above the light bar 32 for shielding light. When the light guide plates 31 are disposed on both sides of the heat dissipation supporting member 30, the supporting portion 332 abuts against the light guide plates 31 on both sides of the heat dissipation supporting member 30 for limiting. When one side of the heat dissipation supporting member 30 is the light guide plate 31 and the other side is the frame 11 of the back plate 10, the supporting portion 332 abuts against the corresponding light guide plate 31 and the frame 11 for limiting.
The heat dissipation portion 331 is used to dissipate heat of the LED lamp on the light bar 32. The support portion 332 may be disposed at the top of the light bar. When the light guide plates 31 are disposed on both sides of the heat dissipation support 30, an idle space is disposed between the two light guide plates 31, and the light bar 32 and the heat dissipation support 30 are disposed in the idle space. The supporting portion 332 abuts against the light guide plates 31 on both sides of the heat dissipation supporting member 30 to determine the distance between the two light guide plates 31 to be the predetermined distance, thereby realizing the limiting function. When one side of the heat dissipation support 30 is a light guide plate 31 and the other side is a frame 11 of the back plate 10, an idle space is formed between the light guide plate 31 and the frame 11, and the light bar 32 and the heat dissipation support 30 are both disposed in the idle space. The supporting portion 332 abuts against the corresponding light guide plate 31 and the corresponding frame 11 to determine that the distance between the light guide plate 31 and the frame 11 is the required predetermined distance, so that the limiting effect is realized, the light string 34 is prevented from being damaged by the light guide plate 31, and the optical coupling distance of the backlight unit 30 is controlled.
In this embodiment, the heat dissipating portion 331, the supporting portion 332, and the fixing portion 333 may be integrally molded. The heat dissipation supporting member 33 may be in a Z shape, so that the contact area between the fixing portion 333 and the backlight 10 is larger, and the heat dissipation supporting member 33 and the back plate 10 are more firmly fixed.
Specifically, the heat dissipation support 33 may be an aluminum extrusion or an aluminum sheet metal.
Further, the supporting portion 332 of the heat dissipation supporting member 33 is provided with a reflective sheet 35, a distance from the top surface of the corresponding light guide plate 31 to the supporting portion 332 is a first distance, a distance from the top of the light guide plate 31 to the reflective sheet 35 is a second distance, and the first distance is greater than the second distance.
It should be noted that the first distance is greater than the second distance, that is, the top surface of the light guide plate 31 is higher than the reflective sheet 35. Wherein the reflective sheet 35 is a white reflective sheet.
Note that, a mesh point is provided at the bottom of the light guide plate 31. The dots can scatter light rays in the light guide plate 31, and change the light path of some light rays. By controlling the dots, the light rays emitted from the area of the light guide plate 31 higher than the reflector 35 to the reflector 35 can be realized, so that the light rays above the light bar 32 are distributed. The height of the light guide plate 31 above the reflective sheet 35 is proportional to the width of the light bar 32. In the present embodiment, the width of the light bar 32 is less than 4 mm. The second distance may be greater than or equal to 0.5 mm.
Further, the fixing portion 333 of the heat dissipation support 33 is fixed to the back plate 10 by an adhesive.
Further, the top surface of the frame 11 of the back plate 10 has a predetermined distance from the light guide plate 31. The diffusion plate 20 is fixed on the top surface of the frame 11 such that the diffusion plate 20 is disposed above the N backlight units, and the diffusion plate 20 and the light guide plate 31 have the predetermined distance.
It should be noted that, the predetermined distance is provided between the light guide plate 31 and the diffusion plate 20, that is, an air layer is provided between the light guide plate 31 and the diffusion plate 20, which can effectively assist in solving the problem of the quality of the backlight module.
Referring to fig. 3, a liquid crystal display 400 is further provided according to a second embodiment of the present invention. The liquid crystal display 400 includes a liquid crystal panel 410 and a backlight module. The backlight module provides planar light to the liquid crystal panel 410, so that the liquid crystal panel 410 displays images. The backlight module may be the backlight module 100 in the first aspect. Since the specific structure of the backlight module 100 has been described in detail in the above first embodiment, it is not described herein again.
In the present embodiment, the liquid crystal display 400 includes the backlight module 100. The backlight module 100 includes a back plate 10, a diffusion plate 20, and N backlight units 30. The diffusion plate 20 is disposed above the N backlight units 30 to adjust the light emitted from the N backlight units 30 into a uniform surface light source. The back plate 10 is formed with N partition units, one backlight unit 30 is disposed in each partition unit, and each backlight unit 30 includes a light guide plate 31, a light bar 32, and a heat dissipation support 33. The light bar 32 is provided with a plurality of light strings 34 in parallel relationship. The light bar 32 is located at one side of the light guide plate 31 and disposed on the heat dissipation support 33. The heat dissipation supporting member 33 is fixed on the back plate 10. Since multiple strings 34 are connected in parallel, multiple strings are connected in parallel. The parallel connection of the lamp strings can be controlled independently, so that the LED lamps can be controlled in a partitioned mode. Meanwhile, the light bar 32 is located at one side of the light guide plate 31, so that the backlight module 100 is a side-in type backlight module. Since the lateral type backlight module can realize a thinner thickness than the direct type backlight module, the backlight module 100 can realize an ultra-thin HDR design, thereby satisfying the needs of the industry.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (6)
1. A backlight module is characterized in that the backlight module comprises a back plate, a diffusion plate and N backlight units, wherein the diffusion plate is arranged above the N backlight units to adjust light emitted by the N backlight units into a uniform surface light source;
the heat dissipation support piece comprises a heat dissipation part, a support part and a fixing part, the support part is arranged at the top of the heat dissipation part, the fixing part is arranged at the bottom of the heat dissipation part, the lamp strip is arranged on the heat dissipation part, the fixing part is arranged on the back plate and used for fixing the heat dissipation support piece on the back plate, and the support part is positioned above the lamp strip to shade light;
a reflector plate is arranged on the supporting part of the heat dissipation supporting part, the distance from the top surface of the light guide plate to the supporting part is a first distance, the distance from the top surface of the light guide plate to the reflector plate is a second distance, the first distance is greater than the second distance, and mesh points are arranged at the bottom of the light guide plate; the mesh points are used for scattering light rays in the light guide plate, wherein the light rays in the area of the light guide plate higher than the reflector plate are emitted onto the reflector plate by controlling the mesh points, so that the distribution of the light rays above the lamp strip is ensured, the height of the light guide plate higher than the reflector plate is in direct proportion to the width of the lamp strip, the width of the lamp strip is in the range of 0-4mm,
when the light guide plates are arranged on the two sides of the heat dissipation support piece, the supporting parts are abutted to the light guide plates on the two sides of the heat dissipation support piece to limit, and when one side of the heat dissipation support piece is the light guide plate and the other side of the heat dissipation support piece is the frame of the back plate, the supporting parts are abutted to the corresponding light guide plate and the frame to limit.
2. The backlight module of claim 1, wherein the second distance is greater than or equal to 0.5 mm.
3. The backlight module as claimed in claim 1, wherein the fixing portion of the heat dissipation supporting member is fixed to the back plate by an adhesive.
4. The backlight module as claimed in claim 1, wherein the heat dissipation supporting member is an aluminum sheet metal.
5. The backlight module as claimed in claim 1, wherein the top surface of the chassis of the back plate is spaced apart from the light guide plate by a predetermined distance, and the diffuser plate is fixed to the top surface of the chassis such that the diffuser plate is disposed over the N backlight units, the diffuser plate being spaced apart from the light guide plate by the predetermined distance.
6. A liquid crystal display, characterized by: the liquid crystal display comprises a liquid crystal panel and the backlight module set as claimed in any one of claims 1 to 5, wherein the backlight module set provides planar light for the liquid crystal panel to make the liquid crystal panel display images.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611257023.6A CN106773302B (en) | 2016-12-30 | 2016-12-30 | Backlight module and liquid crystal display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611257023.6A CN106773302B (en) | 2016-12-30 | 2016-12-30 | Backlight module and liquid crystal display |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106773302A CN106773302A (en) | 2017-05-31 |
| CN106773302B true CN106773302B (en) | 2020-02-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201611257023.6A Active CN106773302B (en) | 2016-12-30 | 2016-12-30 | Backlight module and liquid crystal display |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108983493A (en) * | 2018-07-26 | 2018-12-11 | 惠州市华星光电技术有限公司 | Backlight module and liquid crystal display |
| CN110136654B (en) * | 2019-04-03 | 2021-01-26 | 深圳康佳电子科技有限公司 | Dimming backlight partition dimming control method, intelligent terminal and storage medium |
| CN111856811A (en) * | 2019-04-30 | 2020-10-30 | 名硕电脑(苏州)有限公司 | Backlight module, assembling method thereof and display device |
| CN110824774B (en) * | 2019-11-26 | 2021-03-16 | 惠州市华星光电技术有限公司 | Backlight structure and display panel |
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Address after: 9-2 Tangming Avenue, Guangming New District, Shenzhen City, Guangdong Province Patentee after: TCL Huaxing Photoelectric Technology Co.,Ltd. Address before: 9-2 Tangming Avenue, Guangming New District, Shenzhen City, Guangdong Province Patentee before: Shenzhen China Star Optoelectronics Technology Co.,Ltd. |