CN114811531B - Backlight module and method for reducing thickness of backlight module - Google Patents
Backlight module and method for reducing thickness of backlight module Download PDFInfo
- Publication number
- CN114811531B CN114811531B CN202210458412.4A CN202210458412A CN114811531B CN 114811531 B CN114811531 B CN 114811531B CN 202210458412 A CN202210458412 A CN 202210458412A CN 114811531 B CN114811531 B CN 114811531B
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- China
- Prior art keywords
- lamp
- mounting plate
- lamp beads
- plate
- backlight module
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- 238000000034 method Methods 0.000 title claims abstract description 10
- 239000011324 bead Substances 0.000 claims abstract description 45
- 230000003287 optical effect Effects 0.000 claims abstract description 37
- 238000005286 illumination Methods 0.000 claims abstract description 16
- 239000000696 magnetic material Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 6
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000003760 hair shine Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V19/00—Fastening of light sources or lamp holders
- F21V19/001—Fastening of light sources or lamp holders the light sources being semiconductors devices, e.g. LEDs
- F21V19/0015—Fastening arrangements intended to retain light sources
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Illuminated Signs And Luminous Advertising (AREA)
Abstract
The application relates to a backlight module and a method for reducing thickness of the backlight module, which comprises a lamp plate and an optical plate, wherein the optical plate is arranged above the lamp plate, the lamp plate comprises a mounting plate and a plurality of lamp beads, the lamp beads are arranged on the mounting plate at intervals, and illumination directions of the lamp beads are all obliquely arranged. The method also comprises the following steps: step one, preparing lamp beads, and enabling light rays to be emitted upwards obliquely after the lamp beads are installed; and step two, fixing the lamp beads on the mounting plate, wherein the orientation of each lamp bead is the same, and an optical plate is arranged above the mounting plate. The application has the effects of keeping the normal illumination of the lamp beads and reducing the thickness of the backlight module.
Description
Technical Field
The present disclosure relates to the field of optical devices, and more particularly, to a backlight module and a method for reducing the thickness of the backlight module.
Background
The backlight module is formed by combining a lamp panel and a plurality of optical plates arranged above the lamp panel. The gap between the lamp panel and the optical plate above the lamp panel is the light mixing space. Because the light beads on the light plate have gaps in the irradiation range on the optical plate, a dark area can be formed when the backlight module is used, in order to eliminate the dark area, the distance between the optical plate and the light plate can be increased, the irradiation area of the light beads on the optical plate is enlarged, and the thickness of the backlight module is increased.
Disclosure of Invention
In order to reduce the thickness of the backlight module, the application provides a backlight module and a method for reducing the thickness of the backlight module.
The application provides a backlight module, adopts following technical scheme:
the utility model provides a backlight unit, includes lamp plate and optical plate, the optical plate sets up the top at the lamp plate, the lamp plate includes mounting panel and a plurality of lamp pearl, and is a plurality of the lamp pearl interval sets up on the mounting panel, a plurality of the equal slope of illumination direction of lamp pearl sets up.
Through adopting above-mentioned technical scheme, the lamp pearl line that inclines shines the route longer, and the irradiation area on the optical plate bottom surface is bigger, when needing the total illumination area of the same area, can be through reducing the interval between optical plate and the mounting panel, has reached the effect of reducing backlight unit thickness promptly.
In a specific embodiment, there is an overlap of the illuminated areas of adjacent light sources at the bottom surface of the optical plate.
By adopting the technical scheme, the dark area between the irradiation areas is eliminated as much as possible, and the quality of the backlight module is improved.
In a specific implementation mode, the lamp bead comprises a base, a light source and a lens, wherein the base is arranged on the mounting plate, a fixed block is arranged on the base, a connecting shaft is arranged on the side wall of the fixed block, a shell of the light source is arranged on the connecting shaft, the lens is arranged on the shell of the light source, and a limiting piece for limiting the rotation of the light source is arranged on the connecting shaft.
By adopting the technical scheme, the irradiation angle of the light source is adjustable, the irradiation angle of the light source can be conveniently adjusted according to design requirements, and the light source is more flexible to set.
In a specific implementation manner, the limiting piece is a limiting sleeve, a clamping ring is arranged on the inner wall of the limiting sleeve, limiting edges are arranged on the side wall of the connecting shaft, and a plurality of limiting edges are arranged at intervals.
Through adopting above-mentioned technical scheme, spacing arris stop the snap ring and loosen from the connecting axle, promote the connection stability of stop collar and connecting axle. Meanwhile, the limit edges increase friction with the limit sleeve, the limit sleeve is prevented from rotating on the connecting shaft, and the light source is prevented from rotating conveniently through the limit sleeve.
In a specific implementation manner, the end face of the opening end of the limit sleeve is provided with a latch, and the shell of the light source is provided with a clamping groove for clamping the latch.
Through adopting above-mentioned technical scheme, stop collar and light source pass through latch and draw-in groove to be connected for stop collar and light source synchronous motion, when stop collar stops rotating, can block the light source and rotate, fix a position the orientation of light source.
In a specific implementation manner, a positioning block is arranged on the bottom surface of the base, and a positioning hole for clamping the positioning block is formed in the mounting plate.
Through adopting above-mentioned technical scheme, fix a position the position of base on the mounting panel, make things convenient for the lamp pearl to fix a position on the mounting panel fast.
In a specific implementation manner, positioning teeth are arranged on the side wall of the positioning block, and positioning grooves for clamping the positioning teeth are formed in the inner wall of the positioning hole.
Through adopting above-mentioned technical scheme, after the lamp pearl location is on the mounting panel, positioning tooth and constant head tank stop the base and rotate on the mounting panel, and the lamp pearl is difficult for deflecting under the effect of external force, promotes the stability after the lamp pearl location on the mounting panel.
In a specific embodiment, the base and the mounting plate are both made of magnetic materials, and the end of the base adjacent to the mounting plate is opposite in magnetic polarity to the end of the mounting plate adjacent to the base.
Through adopting above-mentioned technical scheme, when the base is close to the mounting panel, the mounting panel exists the appeal to the base for the base can be connected on the mounting panel fast and stably, and the lamp pearl is difficult for falling from the base.
The application also provides a method for reducing the thickness of the backlight module, which adopts the following technical scheme:
a method for reducing the thickness of a backlight module comprises the following steps:
step one, preparing lamp beads, and enabling light rays to be emitted upwards in an inclined mode after the lamp beads are installed;
and step two, fixing the lamp beads on a mounting plate, wherein the orientation of each lamp bead is the same, and an optical plate is arranged above the mounting plate.
Through adopting above-mentioned technical scheme, after the lamp pearl slope sets up, the illumination route of light becomes longer, and the illumination area on the optical plate bottom surface increases, under the illumination area that needs the same, can reduce the interval between lamp plate and the optical plate, reduces backlight unit's thickness.
In a specific embodiment, the positions of the light beads are adjusted before the light beads are fixed on the mounting plate, so that the illumination areas of adjacent light beads on the optical plate overlap.
By adopting the technical scheme, through overlapping of illumination areas, dark areas among the pearlescent illumination areas of the lamps are eliminated, and the quality of the backlight module is improved.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the lamp beads are obliquely arranged, the irradiation path of lamplight is prolonged, the irradiation area of the lamp beads on the optical plate is enlarged, the distance between the lamp plate and the optical plate can be reduced, and the effect of reducing the thickness of the backlight module is achieved;
2. the illumination orientation of lamp pearl can be adjusted, conveniently can adapt to different design requirements to the lamp pearl.
Drawings
Fig. 1 is a schematic overall structure of embodiment 1.
Fig. 2 is a schematic overall structure of embodiment 2.
Fig. 3 is an exploded view showing the structure of the lamp bead.
Fig. 4 is a schematic diagram showing the structure of the positioning block.
Reference numerals illustrate: 1. a mounting plate; 2. an optical plate; 3. a lamp bead; 31. a light source; 32. a base; 33. a lens; 4. a fixed block; 5. a connecting shaft; 6. a limit sleeve; 7. a clasp; 8. a clamping groove; 9. a positioning block; 10. positioning holes; 11. positioning teeth; 12. a positioning groove; 13. limit edges; 14. and (5) clamping teeth.
Detailed Description
The present application is described in further detail below in conjunction with figures 1-4.
Referring to fig. 1, the backlight module includes a lamp panel and an optical plate 2, and the optical plate 2 is disposed right above the lamp panel. The optical plate 2 may be several pieces, and one piece is used for illustration in this embodiment. The lamp plate includes mounting panel 1 and a plurality of lamp pearl 3, and a plurality of lamp pearl 3 array arrangement are on the lamp plate, and the orientation slope of lamp pearl 3 for the irradiation direction of light is not perpendicular with mounting panel 1 top surface, and all the orientation of lamp pearl 3 is the same. By obliquely arranging the lamp beads 3, the illumination profile of the lamp beads 3 on the bottom surface of the optical plate 2 is elliptical. And the inclined orientation enables the lamplight to obtain a longer light path in a light mixing area between the lamp panel and the optical plate 2, so that the irradiation area of the lamp beads 3 on the bottom surface of the optical plate 2 is enlarged. On the premise that the same irradiation area is required to be obtained, the optical plate 2 can be arranged downwards, and the distance between the lamp plate and the optical plate 2 is reduced, so that the thickness of the backlight module is reduced.
Referring to fig. 1, the irradiation areas of the adjacent beads 3 on the bottom surface of the optical plate 2 are overlapped (the dotted line in the figure represents the light irradiation range), so that the dark area between the irradiation areas of the beads 3 is eliminated as much as possible, the dark area on the backlight module is eliminated, and the illumination quality of the backlight module is improved.
Embodiment 1 of the present application further provides a method for reducing a thickness of a backlight module, including the following steps:
step one, preparing the LED lamp beads 3, so that after the LED lamp beads 3 are fixed on the mounting plate 1, light rays are emitted obliquely.
Step two, the positions of the LED lamp beads 3 are adjusted, so that the illumination areas of the adjacent LED lamp beads 3 on the optical plate 2 are overlapped, the LED lamp beads 3 are fixed on the mounting plate 1 in a welding mode, the directions of the LED lamp beads 3 are identical, and the optical plate 2 is arranged above the mounting plate 1.
Example 2:
referring to fig. 2 and 3, embodiment 2 differs from embodiment 1 in that: the lamp pearl 3 includes base 32, light source 31 and lens 33, and base 32 sets up on mounting panel 1, and the one end of base 32 top surface is fixed with fixed block 4, is fixed with connecting axle 5 on the lateral wall of fixed block 4, and the shell setting of light source 31 is on connecting axle 5, and light source 31 can rotate around connecting axle 5, and lens 33 is fixed on the shell of light source 31. One end of the connecting shaft 5 far away from the fixed block 4 is provided with a limiting piece for limiting the rotation of the lamp beads 3. The light source 31 rotates on the connecting shaft 5, the direction of the light is conveniently adjusted according to different design requirements, the light source 31 is blocked by the limiting piece to rotate in the rotating shaft, and the direction of the light is positioned.
Referring to fig. 2 and 3, in this embodiment, the limiting member is specifically a limiting sleeve 6, the end surface of the opening end of the limiting sleeve 6 is integrally formed with a latch 14, and the housing of the light source 31 is provided with a slot 8 for the latch 14 to be clamped. The latch 14 is inserted into the clamping groove 8, and the light source 31 is connected with the limiting sleeve 6, so that the limiting sleeve 6 is required to be driven to rotate together when the light source 31 rotates. Accordingly, when the rotation of the spacer 6 is stopped, the light source 31 cannot continue to rotate.
Referring to fig. 2 and 3, a snap ring 7 is integrally formed on the inner wall of the stop collar 6. Annular limiting ribs 13 are integrally formed on the side wall of the connecting shaft 5, and a plurality of limiting ribs 13 are arranged at intervals. After the limiting sleeve 6 is sleeved on the connecting shaft 5, the limiting ribs 13 are in interference fit with the limiting sleeve 6, the limiting sleeve 6 is clamped tightly, the limiting sleeve 6 is blocked from rotating, the light source 31 is further blocked from rotating, and the direction of the light source 31 is positioned. Meanwhile, the limiting edges 13 prevent the clamping ring 7 from being separated from the connecting shaft 5, and stability of the limiting sleeve 6 on the connecting shaft 5 is improved.
Referring to fig. 2 and 4, a positioning block 9 is integrally formed on the bottom surface of the base 32, positioning teeth 11 are integrally formed on the side wall of the positioning block 9, a positioning hole 10 for clamping the positioning block 9 is formed on the mounting plate 1, and a positioning groove 12 for clamping the positioning teeth 11 is formed on the inner wall of the positioning hole 10. When setting up base 32, with locating piece 9 card into locating hole 10 in, in the location tooth 11 card was gone into to the location groove 12, fixed a position the orientation of light source 31 to stop light source 31 orientation change, promote the stability when light source 31 set up on mounting panel 1.
The mounting plate 1 and the base 32 are made of magnetic materials, the magnetic poles of one end of the base 32 close to the mounting plate 1 are opposite to the magnetic poles of one end of the mounting plate 1 close to the base 32, and the magnetic poles of the positioning block 9 and the positioning teeth 11 are opposite to the magnetic poles of one end of the mounting plate 1 close to the base 32. Utilize the principle that opposite phase attracts for base 32 when setting up mounting panel 1, mounting panel 1 exists the appeal to base 32, and after locating piece 9 card was gone into locating hole 10, be difficult for deviating from locating hole 10 under the effect of external force, promote the stability of lamp pearl 3 on mounting panel 1, conveniently fix lamp pearl 3 on mounting panel 1.
The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.
Claims (4)
1. The utility model provides a backlight unit, includes lamp plate and optical plate (2), optical plate (2) set up in the top of lamp plate, its characterized in that: the lamp panel comprises a mounting plate (1) and a plurality of lamp beads (3), wherein the lamp beads (3) are arranged on the mounting plate (1) at intervals, the lamp beads (3) are obliquely arranged in the illumination direction, the lamp beads (3) comprise a base (32), a light source (31) and a lens (33), the base (32) is arranged on the mounting plate (1), a fixing block (4) is arranged on the base (32), a connecting shaft (5) is arranged on the side wall of the fixing block (4), a shell of the light source (31) is arranged on the connecting shaft (5), the lens (33) is arranged on the shell of the light source (31), a limiting piece for limiting the rotation of the light source (31) is arranged on the connecting shaft (5), a clamping ring (7) is arranged on the inner wall of the limiting piece (6), a limiting rib (13) is arranged on the side wall of the connecting shaft (5), a plurality of clamping blocks (13) are arranged at intervals, clamping teeth (14) are arranged on the opening end faces (6) of the limiting piece, a bottom face (14) is provided with a clamping groove (9) on the bottom face (31), the mounting plate (1) is provided with a positioning hole (10) for clamping the positioning block (9), the side wall of the positioning block (9) is provided with positioning teeth (11), and the inner wall of the positioning hole (10) is provided with a positioning groove (12) for clamping the positioning teeth (11).
2. A backlight module according to claim 1, wherein: the adjacent light sources (31) overlap each other in the irradiation area of the bottom surface of the optical plate (2).
3. A backlight module according to claim 1, wherein: the base (32) and the mounting plate (1) are both made of magnetic materials, and the magnetic poles of one end of the base (32) close to the mounting plate (1) are opposite to the magnetic poles of one end of the mounting plate (1) close to the base (32).
4. A method for reducing the thickness of a backlight module is characterized in that: a backlight module, in particular a backlight module according to any of claims 1-3, comprising the steps of:
step one, preparing lamp beads, and enabling light rays to be emitted upwards in an inclined mode after the lamp beads are installed;
fixing the lamp beads on a mounting plate, wherein the orientation of each lamp bead is the same, and an optical plate is arranged above the mounting plate;
before the lamp beads are fixed on the mounting plate, the positions of the lamp beads are adjusted, so that the illumination areas of adjacent lamp beads on the optical plate are overlapped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210458412.4A CN114811531B (en) | 2022-04-28 | 2022-04-28 | Backlight module and method for reducing thickness of backlight module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210458412.4A CN114811531B (en) | 2022-04-28 | 2022-04-28 | Backlight module and method for reducing thickness of backlight module |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114811531A CN114811531A (en) | 2022-07-29 |
| CN114811531B true CN114811531B (en) | 2024-03-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210458412.4A Active CN114811531B (en) | 2022-04-28 | 2022-04-28 | Backlight module and method for reducing thickness of backlight module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114811531B (en) |
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| CN211526174U (en) * | 2019-11-15 | 2020-09-18 | 南京瑞思其智能科技有限公司 | Intelligent LED wall lamp lighting system |
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| CN216383841U (en) * | 2021-12-29 | 2022-04-26 | 广州市晟茂光电科技有限公司 | LED projecting lamp of adjustable angle of illumination |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5011151B2 (en) * | 2008-02-12 | 2012-08-29 | 株式会社日立製作所 | Liquid crystal display equipment |
| US20120299044A1 (en) * | 2010-02-16 | 2012-11-29 | Sharp Kabushiki Kaisha | Lighting set, lighting device, and display device |
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2022
- 2022-04-28 CN CN202210458412.4A patent/CN114811531B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20100074426A (en) * | 2008-12-24 | 2010-07-02 | (주)코리아반도체조명 | Illumination apparatus for flat angle adjustable by using led |
| JP2012084283A (en) * | 2010-10-07 | 2012-04-26 | Panasonic Corp | Lamp and lighting system |
| CN202647490U (en) * | 2012-07-24 | 2013-01-02 | 京东方科技集团股份有限公司 | Backlight module and display device |
| CN203823596U (en) * | 2014-05-14 | 2014-09-10 | 信利半导体有限公司 | Liquid crystal display device and backlight module thereof |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN114811531A (en) | 2022-07-29 |
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