CN110596953A - Liquid crystal display and backlight module thereof - Google Patents
Liquid crystal display and backlight module thereof Download PDFInfo
- Publication number
- CN110596953A CN110596953A CN201910742160.6A CN201910742160A CN110596953A CN 110596953 A CN110596953 A CN 110596953A CN 201910742160 A CN201910742160 A CN 201910742160A CN 110596953 A CN110596953 A CN 110596953A
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- Prior art keywords
- plate
- light source
- shaped groove
- liquid crystal
- frame
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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
- G02F1/133608—Direct backlight including particular frames or supporting means
-
- 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
- G02F1/133615—Edge-illuminating devices, i.e. illuminating from the side
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Liquid Crystal (AREA)
- Planar Illumination Modules (AREA)
Abstract
The invention discloses a liquid crystal display and a backlight module thereof, wherein the backlight module comprises a rear shell, a middle frame, a front frame, a reflector plate, a light guide plate and a diaphragm combination, wherein the side edge of the rear shell is provided with an inner baffle plate and an outer baffle plate, and the outer wall of the outer baffle plate is provided with a plurality of catching grooves; the middle frame is provided with a U-shaped groove, the middle frame is further provided with a first L-shaped groove and a second L-shaped groove, the first L-shaped groove is abutted against the edge of the diaphragm combination, the second L-shaped groove is used for placing a liquid crystal panel, the side edge of the front frame is provided with a frame plate, and the inner wall of the frame plate is provided with a plurality of fasteners matched with the fastening grooves. The U-shaped groove on the upper portion of the middle frame is used for clamping the inner baffle, and the U-shaped groove on the lower portion of the middle frame is used for clamping the light source fixing plate, so that the influence of the thickness of the middle frame on the thickness of the liquid crystal display can be effectively reduced, the liquid crystal display can be assembled quickly, and the liquid crystal display can be disassembled quickly in the after-sale process.
Description
Technical Field
The invention relates to the technical field of display, in particular to a liquid crystal display and a backlight module thereof.
Background
The liquid crystal display device has the characteristics of light weight, thin thickness, low power consumption and small radiation, is widely used in the fields of information technology, multimedia technology and the like, and becomes the mainstream of various display devices. Fig. 1 shows a traditional liquid crystal display module, the module structure is complicated, the number of parts is large, the precision requirement for the middle frame and the back plate is high, the material and mold cost is high, the assembly is complicated, the working hour consumption is large, the thickness of the middle frame is thick, the assembled liquid crystal display is thick and heavy, the market demand of ultrathin, ultra-narrow and ultra-light cannot be met, in addition, the important parts such as the front frame, the front iron frame, the rear shell, the middle frame, the diaphragm combination and the liquid crystal display are damaged easily when the display module is disassembled, and the maintenance difficulty of the liquid crystal display is caused.
Disclosure of Invention
The invention provides a liquid crystal display and a backlight module thereof, aiming at solving the problems of high production cost and difficult disassembly of the traditional display caused by unreasonable design.
In order to achieve the purpose, the technical scheme provided by the invention is as follows:
a backlight module includes:
the side edge of the rear shell is provided with an outer baffle and an inner baffle, the outer baffle and the inner baffle are arranged in parallel, and the outer wall of the outer baffle is provided with a plurality of catching grooves;
the reflector plate is arranged in the rear shell; the reflecting surface of the reflecting sheet is covered with a light guide plate, the surface of the light guide plate is covered with a diaphragm combination, one side of the light guide plate is provided with a light source fixing plate, and the light source fixing plate is provided with a light source which is opposite to the side edge of the light guide plate;
the light source fixing plate comprises a middle frame, wherein a U-shaped groove is formed in the middle frame, a first U-shaped groove located at the upper part of the middle frame is used for accommodating an inner baffle, and a second U-shaped groove located at the lower part of the middle frame is used for accommodating the light source fixing plate; the middle frame is also provided with a first L-shaped groove and a second L-shaped groove, a separation plate is formed between the first L-shaped groove and the second L-shaped groove, the first L-shaped groove is abutted against the edge of the diaphragm combination, the second L-shaped groove is used for placing a liquid crystal panel, and the separation plate is used for separating the liquid crystal panel from the diaphragm combination; the depth of the second L-shaped groove does not exceed the thickness of the liquid crystal panel;
the side edge of the front frame is provided with a frame plate, and the inner wall of the frame plate is provided with a plurality of fasteners matched with the fastening grooves.
On the basis of the technical scheme, the light source fixing plate comprises a light source fixing plate left plate and a light source fixing plate right plate which are perpendicular to each other, the light source fixing plate right plate is fixed between the rear shell and the reflector plate, and the light source fixing plate left plate is located in the second U-shaped groove and perpendicular to the light guide plate.
On the basis of the technical scheme, the depth of the first L-shaped groove does not exceed the thickness of the diaphragm combination.
On the basis of the technical scheme, the rear shell is provided with a plurality of bone positions perpendicular to the reflector plate, and the bone positions are used for supporting the reflector plate and the right plate of the light source fixing plate.
On the basis of the technical scheme, the light source is adhered to the left plate of the light source fixing plate through the light source heat dissipation glue.
On the basis of the technical scheme, the light source is a light bar.
On the basis of the technical scheme, the rear shell is provided with a plurality of threaded holes, the middle frame is provided with a plurality of through holes for screws to pass through, and the rear shell and the middle frame are fixed together through the screws.
On the basis of the technical scheme, the front frame is provided with the first positioning plate and the second positioning plate which are parallel to the frame plate, a positioning groove used for accommodating the outer baffle is formed between the frame plate and the first positioning plate, and the inner wall of the second positioning plate is abutted to the outer side of the middle frame.
A liquid crystal display comprises a liquid crystal panel and the backlight module.
On the basis of the technical scheme, a cavity is formed between the liquid crystal panel and the membrane combination.
Compared with the prior art, the invention has the advantages that:
(1) the backlight module of the invention omits a back plate, so that the thickness of the liquid crystal display is reduced; the backlight module has few components, thereby saving the material and the die cost, reducing the cost, simplifying the assembly process, improving the assembly efficiency, facilitating the disassembly and avoiding the damage of the components in the disassembly process.
(2) The middle frame and the front frame are clamped at the inner side and the outer side of the rear shell, so that the influence of the thickness of the middle frame on the thickness of the liquid crystal display can be effectively reduced, the liquid crystal display can be assembled quickly, and the liquid crystal display can be disassembled quickly in the after-sale process.
Drawings
FIG. 1 is a cross-sectional view of a conventional backlight module; in fig. 1: the assembly comprises a front frame, a front iron frame, a rear shell, a middle frame, a back plate, a reflector, a light guide plate, a diaphragm assembly and a liquid crystal display screen.
FIG. 2 is a schematic cross-sectional view of a backlight module according to the present invention;
FIG. 3 is a schematic partial cross-sectional view of A in FIG. 2;
FIG. 4 is a cross-sectional view of a middle frame of the portion A in FIG. 2;
FIG. 5 is a schematic partial cross-sectional view of B in FIG. 2;
FIG. 6 is a cross-sectional view of a middle frame of the portion B in FIG. 2;
FIG. 7 is a cross-sectional view of the front frame of the portion B in FIG. 2;
FIG. 8 is a top view of the rear housing;
in FIGS. 2 to 7, 1-rear shell, 11-outer baffle, 111-groove, 12-inner baffle, 13-rib position, 2-reflector plate, 3-light guide plate, 4-membrane combination, 5-middle frame, 51-first U-shaped groove, 52-first L-shaped groove, 53-second L-shaped groove, 54-isolation plate, 55-second U-shaped groove, 6-front frame, 61-frame plate, 611-fastener, 62-first positioning plate, 63-second positioning plate, 7-light source, 8-light source heat dissipation glue, 9-light source fixing plate, 91-light source fixing plate left plate, 92-light source fixing plate right plate, 10-liquid crystal panel.
Detailed Description
Embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.
As shown in fig. 2, the backlight module provided by the present invention comprises: the backlight module comprises a rear shell 1, a reflector plate 2, a light guide plate 3, a diaphragm assembly 4, a middle frame 5, a front frame 6, a light source 7 and a light source fixing plate 9;
the reflector plate 2 is arranged in the rear shell 1; the reflecting surface of the reflecting sheet 2 is covered with a light guide plate 3, the surface of the light guide plate 3 is covered with a diaphragm combination 4, one side of the light guide plate 3 is provided with a light source 7, and the light source 7 is fixed on a light source fixing plate 9; the light source fixing plate 9 comprises a light source fixing plate left plate 91 and a light source fixing plate right plate 92 which are perpendicular to each other; the light source fixing plate right plate 92 is disposed between the rear case 1 and the reflector 2 and parallel to the light guide plate 3, the light source fixing plate left plate 91 is perpendicular to the light guide plate 3, the light source 7 is fixed on the light source fixing plate left plate 91, and the position of the light source 7 is opposite to the light guide plate 3. The light source 7 may be fixed to the light source fixing plate left plate 91 by means of gluing, clamping or screwing, and is preferably fixed to the light source fixing plate left plate 91 by means of a light source heat dissipation glue 8.
As shown in fig. 3 and 4, a second U-shaped groove 55 matching with the left plate 91 of the light source fixing plate is arranged at the lower part of the middle frame 5, a first L-shaped groove 52 and a second L-shaped groove 53 are further arranged on the middle frame 5, a separation plate 54 is formed between the first L-shaped groove 52 and the second L-shaped groove 53, the first L-shaped groove 52 abuts against the edge of the diaphragm assembly 4, the second L-shaped groove 53 is used for placing a liquid crystal panel, and the separation plate 54 is used for separating the liquid crystal panel from the diaphragm assembly 4; the depth of the first L-shaped groove 52 and the second U-shaped groove 55 does not exceed the thickness of the diaphragm assembly 4, so as to avoid blocking light emitted by the light source 7 (in this embodiment, a light bar is used);
as shown in fig. 5 and 6, the upper part of the middle frame 5: a first U-shaped groove 51 matched with the inner baffle 12 is arranged, a first L-shaped groove 52 and a second L-shaped groove 53 are further arranged on the middle frame 5, a separation plate 54 is formed between the first L-shaped groove 52 and the second L-shaped groove 53, the first L-shaped groove 52 is abutted against the edge of the reflector plate 2, the light guide plate 3 and the diaphragm combination 4, the second L-shaped groove 53 is used for placing a liquid crystal panel, and the separation plate 54 is used for separating the liquid crystal panel from the diaphragm combination 4;
an outer baffle 11 and an inner baffle 12 are arranged on the side edge of the rear shell 1, the outer baffle 11 and the inner baffle 12 are arranged in parallel, and a plurality of catching grooves are formed in the outer wall of the outer baffle 11; the side of the front frame 6 is provided with a frame plate 61, the inner wall of the frame plate 61 is provided with a plurality of fasteners 611 matched with the fastening grooves 111, and the front frame 6 can not fall off after the fasteners 611 are fastened with the fastening grooves.
Further:
the rear shell 1 is provided with a plurality of bone positions 13 perpendicular to the reflector plate 2, the bone positions 13 are used for supporting the reflector plate 2 and the light source fixing plate 9, and the height of the bone positions 13 is changed according to the position of the light source fixing plate 9 so as to ensure that the reflector plate 2 is supported stably.
The rear shell 1 is provided with a plurality of threaded holes (not shown in the figure, which can be uniformly distributed around the rear shell), the middle frame 5 is provided with a plurality of through holes (not shown in the figure, which can be uniformly distributed around the middle frame) for screws to pass through, the through holes are matched with the threaded holes, and the rear shell 1 and the middle frame 5 are fixed together through the screws.
As shown in fig. 7, the front frame 6 is provided with a first positioning plate 62 and a second positioning plate 63 parallel to the frame plate 61, a positioning groove 64 for accommodating the outer barrier 11 is formed between the frame plate 61 and the first positioning plate 62, and the inner wall of the second positioning plate 63 abuts against the outer side of the middle frame 5. After the installation, first locating plate 62 and second locating plate 63 insert between outer baffle 11 and interior baffle 12, and the center 5 is hugged closely to second locating plate 63 outer wall, and outer baffle 11 is hugged closely to first locating plate 62 outer wall, and outer baffle 11 inserts in the constant head tank 64, and the fastener 611 block on preceding frame 6 is in the catching groove 111 of outer baffle 11.
Fig. 8 shows the distribution of the catching grooves 111 on the rear case 1.
A liquid crystal display comprises a liquid crystal panel and the backlight module.
Since the middle frame 5 is provided with the isolation plate 54, a cavity is formed between the liquid crystal panel 10 and the membrane assembly 4.
The installation method of the liquid crystal display comprises the following steps:
firstly, attaching the light source heat dissipation adhesive 8 to the back of the light source 7, then attaching the light source 7 to the side wall of the light source fixing plate 9, and then fixing the light source fixing plate 9 on the rear shell 1; the reflector plate 2, the light guide plate 3 and the diaphragm assembly 4 are sequentially placed into the rear shell 1, the middle frame 5 is clamped at the inner side of the rear shell 1, and the left side and the right side are fixed through screws; and then the liquid crystal panel 10 is put in and the front frame 6 is clamped, thus obtaining the LCD.
The present invention is not limited to the above-mentioned preferred embodiments, and any other products in various forms can be obtained by anyone with the teaching of the present invention, but any changes in the shape or structure thereof, which have the same or similar technical solutions as the present invention, are within the protection scope.
Claims (10)
1. A backlight module, comprising:
the rear shell (1), an outer baffle (11) and an inner baffle (12) are arranged on the side edge of the rear shell (1), the outer baffle (11) and the inner baffle (12) are arranged in parallel, and a plurality of catching grooves (111) are formed in the outer wall of the outer baffle (11);
the reflector plate (2), the reflector plate (2) is arranged in the rear shell (1); the reflection surface of the reflection sheet (2) is covered with a light guide plate (3), the surface of the light guide plate (3) is covered with a diaphragm assembly (4), one side of the light guide plate (3) is provided with a light source fixing plate (9), and the light source fixing plate is provided with a light source (7) which is over against the side edge of the light guide plate (3);
the LED lamp comprises a middle frame (5), wherein a U-shaped groove is formed in the middle frame (5), a first U-shaped groove (51) located at the upper portion of the middle frame is used for accommodating an inner baffle (12), and a second U-shaped groove (55) located at the lower portion of the middle frame is used for accommodating a light source fixing plate (9); the middle frame (5) is further provided with a first L-shaped groove (52) and a second L-shaped groove (53), a separation plate (54) is formed between the first L-shaped groove (52) and the second L-shaped groove (53), the first L-shaped groove (52) abuts against the edge of the diaphragm combination (4), the second L-shaped groove (53) is used for placing the liquid crystal panel (10), and the separation plate (52) is used for separating the liquid crystal panel (10) from the diaphragm combination (4); the depth of the second L-shaped groove (53) does not exceed the thickness of the liquid crystal panel (10);
preceding frame (6), preceding frame (6) side is equipped with frame plate (61), be equipped with a plurality of fasteners (611) identical with catching groove (111) on frame plate (61) inner wall.
2. A backlight module according to claim 1, wherein: light source fixed plate (9) are including mutually perpendicular's light source fixed plate left board (91) and light source fixed plate right board (92), and light source fixed plate right board (92) are fixed in between backshell (1) and reflector plate (2), light source fixed plate left board (91) are located second U type groove (55), and perpendicular to light guide plate (3).
3. A backlight module according to claim 2, wherein: the depth of the first L-shaped groove (52) does not exceed the thickness of the diaphragm combination (4).
4. A backlight module according to claim 2, wherein: be equipped with bone position (13) of a plurality of perpendicular to reflector plate (2) on backshell (1), bone position (13) are used for supporting reflector plate (2) and light source fixed plate right board (92).
5. A backlight module according to claim 2, wherein: the light source (7) is bonded on the left plate (91) of the light source fixing plate through the light source heat dissipation glue (8).
6. A backlight module according to claim 5, wherein: the light source (7) is a lamp strip.
7. A backlight module according to claim 1, wherein: the novel multifunctional electric screwdriver is characterized in that a plurality of threaded holes are formed in the rear shell (1), a plurality of through holes for screws to penetrate through are formed in the middle frame (5), and the rear shell (1) and the middle frame (5) are fixed together through the screws.
8. A backlight module according to claim 1, wherein: be equipped with first locating plate (62) and second locating plate (63) that are on a parallel with frame plate (61) on preceding frame (6), form between frame plate (61) and first locating plate (62) and be used for holding constant head tank (64) of outer baffle (12), second locating plate (63) inner wall butt is in center (5) outside.
9. A liquid crystal display, characterized by: comprising a liquid crystal panel (10) and a backlight module according to any of claims 1 to 8.
10. The liquid crystal display of claim 1, wherein: a cavity is formed between the liquid crystal panel (10) and the membrane combination (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910742160.6A CN110596953A (en) | 2019-08-13 | 2019-08-13 | Liquid crystal display and backlight module thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910742160.6A CN110596953A (en) | 2019-08-13 | 2019-08-13 | Liquid crystal display and backlight module thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110596953A true CN110596953A (en) | 2019-12-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910742160.6A Pending CN110596953A (en) | 2019-08-13 | 2019-08-13 | Liquid crystal display and backlight module thereof |
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| CN (1) | CN110596953A (en) |
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| CN102588849A (en) * | 2012-03-15 | 2012-07-18 | 深圳市华星光电技术有限公司 | Backlight module and liquid crystal display device |
| CN102588848A (en) * | 2012-03-13 | 2012-07-18 | 创维液晶器件(深圳)有限公司 | Lateral light-entering type LED liquid crystal backlight module |
| CN203882053U (en) * | 2014-06-04 | 2014-10-15 | 创维液晶器件(深圳)有限公司 | Novel sidelight type liquid crystal module and liquid-crystal display device |
| US20150055053A1 (en) * | 2013-08-20 | 2015-02-26 | Funai Electric Co., Ltd. | Display device and support member thereof |
| CN207704167U (en) * | 2018-01-11 | 2018-08-07 | 武汉恒生光电产业有限公司 | A kind of liquid crystal display |
| CN109917580A (en) * | 2016-10-27 | 2019-06-21 | 船井电机株式会社 | Display device |
-
2019
- 2019-08-13 CN CN201910742160.6A patent/CN110596953A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102588848A (en) * | 2012-03-13 | 2012-07-18 | 创维液晶器件(深圳)有限公司 | Lateral light-entering type LED liquid crystal backlight module |
| CN102588849A (en) * | 2012-03-15 | 2012-07-18 | 深圳市华星光电技术有限公司 | Backlight module and liquid crystal display device |
| US20150055053A1 (en) * | 2013-08-20 | 2015-02-26 | Funai Electric Co., Ltd. | Display device and support member thereof |
| CN203882053U (en) * | 2014-06-04 | 2014-10-15 | 创维液晶器件(深圳)有限公司 | Novel sidelight type liquid crystal module and liquid-crystal display device |
| CN109917580A (en) * | 2016-10-27 | 2019-06-21 | 船井电机株式会社 | Display device |
| CN207704167U (en) * | 2018-01-11 | 2018-08-07 | 武汉恒生光电产业有限公司 | A kind of liquid crystal display |
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Application publication date: 20191220 |