CN106369422A - Direct type light-emitting diode (LED) backlight module - Google Patents
Direct type light-emitting diode (LED) backlight module Download PDFInfo
- Publication number
- CN106369422A CN106369422A CN201510440610.8A CN201510440610A CN106369422A CN 106369422 A CN106369422 A CN 106369422A CN 201510440610 A CN201510440610 A CN 201510440610A CN 106369422 A CN106369422 A CN 106369422A
- Authority
- CN
- China
- Prior art keywords
- adapter
- led
- emitting diode
- light
- backlight module
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S8/00—Lighting devices intended for fixed installation
-
- 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
- F21V19/0025—Fastening arrangements intended to retain light sources the fastening means engaging the conductors of the light source, i.e. providing simultaneous fastening of the light sources and their electric connections
-
- 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
- F21V23/00—Arrangement of electric circuit elements in or on lighting devices
-
- 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
- F21V23/00—Arrangement of electric circuit elements in or on lighting devices
- F21V23/06—Arrangement of electric circuit elements in or on lighting devices the elements being coupling devices, e.g. connectors
Abstract
A direct type light-emitting diode (LED) backlight module comprises a back plate, a light bar sub-plate, a plurality of LED light bars and one or more local dimming control plates. The back plate is provided with a first surface and a second surface opposite to the first surface, the first support is provided with a groove, and the second surface is provided with one or more through holes communicating with the groove. The light bar sub-plate is arranged in the groove and provided with a first face and a second face opposite to the first face, the first face is provided with a plurality of first connectors which protrude out of the groove, and the second face is provided with one or more second connectors. Each second connector penetrates through the corresponding through hole to protrude out of the second surface, and the first connectors are electrically connected with the second connectors correspondingly through a circuit arranged on the light bar sub-plate. The LED light bars are arranged on the first surface, and each LED light bar is provided with a third connector which is connected with the corresponding first connector. The local dimming control plates are arranged on the second surface and each provided with a fourth connector which is connected with the corresponding second connector. According to the direct type LED backlight module, the wire cost can be lowered, and the assembling man-hour can be shortened.
Description
Technical field
The present invention relates to a kind of straight-down negative light emitting diode (light-emitting diode,
Led) backlight module, more particularly to a kind of straight-down negative led backlight module using local dimming (local dimming) technology.
Background technology
The configuration of straight-down negative led backlight module itself not having the rear of luminiferous display floater (as liquid crystal panel) providing backlight, makes the display floater can normal display image.Additionally, straight-down negative led backlight module can also adopt local dimming technology, power consumption can be greatly reduced, improve display picture contrast.
The straight-down negative led backlight module of existing employing local dimming technology, its basic framework includes backboard, reflector plate, multiple LED lamp bar, diffuser plate and at least one local dimming panel etc..Each LED lamp bar include printed circuit board (PCB) (printed circuit board,
Pcb the multiple led) and on pcb.These LED lamp bars are on the first surface of backboard, and the led on LED lamp bar equably configures with respect to display floater.Diffuser plate is above these LED lamp bars, dispersed for making the light that led sends, and produces the area source of a brightness uniformity distribution.Located between backboard and LED lamp bar, the light for sending led reflexes to diffuser plate to reflector plate, can improve the effective rate of utilization of the light that light source sends.Local dimming panel is on the backboard second surface relative with first surface.Each local dimming panel is used for controlling the brightness fine setting of the led in a specific region with feasible region light modulation.Therefore, each local dimming panel needs to connect with multiple corresponding LED lamp bars by multiple connecting lines, and the first surface of backboard that the second surface cabling of backboard that is located by local dimming panel of these connecting lines needs is located to LED lamp bar, cause wire rod high cost and to assemble man-hour long.
Content of the invention
It is an object of the invention to provide a kind of straight-down negative led backlight module, it is possible to decrease wire rod cost and assembling man-hour.
For achieving the above object, the present invention provides a kind of straight-down negative led backlight module, and it includes backboard, lamp bar daughter board, multiple LED lamp bar and at least one local dimming panel.Backboard has relative first surface and second surface, and first surface is provided with groove, and second surface is provided with least one perforation connecting with groove.Lamp bar daughter board is in groove, lamp bar daughter board has the first relative face and the second face, first face is provided with multiple first adapters, and first adapter protrude from groove, second face is provided with least one second adapter, and each second adapter passes through corresponding perforation to protrude from the second surface of backboard, the first adapter passes through to electrically connect with the second adapter respectively located at the circuit of lamp bar daughter board.LED lamp bar is on the first surface of backboard, and each LED lamp article is provided with the 3rd adapter to connect with corresponding first adapter.Local dimming panel is on the second surface of backboard, and each local dimming panel is provided with the 4th adapter to connect with corresponding second adapter.
In one embodiment of this invention, groove is located at the midline position of the first surface of backboard.First adapter is in the both sides that two row are divided into the first face of lamp bar daughter board, and one end of each LED lamp article is provided with the 3rd adapter.
In one embodiment of this invention, groove is located at the midline position of the first surface of backboard.In string located at the first face of lamp bar daughter board, the centre position of each LED lamp article is provided with the 3rd adapter to first adapter.
In one embodiment of this invention, groove is located at the wherein side of the both sides of the first surface of backboard.In string located at the first face of lamp bar daughter board, one end of each LED lamp article is provided with the 3rd adapter to first adapter.
In one embodiment of this invention, the number of groove and lamp bar daughter board is all two, and two grooves are divided into the both sides of the first surface of backboard, and two lamp bar daughter boards are respectively in corresponding groove.In string located at the first face of lamp bar daughter board, one end of each LED lamp article is provided with the 3rd adapter to first adapter.
In one embodiment of this invention, lamp bar daughter board is opaque lamp bar daughter board.
Technological means described in said one embodiment can be applicable in another embodiment above-mentioned, to obtain a new embodiment, as long as these technological means are not conflicting.
The present invention, because being electrically connected with LED lamp bar by lamp bar daughter board using local dimming panel, is no longer to be electrically connected to first surface with LED lamp bar by the second surface cabling of backboard by multiple connecting lines, therefore can reduce wire rod cost and assembling man-hour.
Brief description
The present invention is further detailed explanation with reference to the accompanying drawings and detailed description.
Fig. 1 is the explosive view of the first embodiment of straight-down negative led backlight module of the present invention.
Fig. 2 is the axonometric chart of the first embodiment of straight-down negative led backlight module of the present invention.
Fig. 3 is the top view of the first embodiment of straight-down negative led backlight module of the present invention.
Fig. 4 is the upward view of the first embodiment of straight-down negative led backlight module of the present invention.
Fig. 5 is the sectional view of the first embodiment of straight-down negative led backlight module of the present invention.
Fig. 6 is the top view of the second embodiment of straight-down negative led backlight module of the present invention.
Fig. 7 is the top view of the 3rd embodiment of straight-down negative led backlight module of the present invention.
Fig. 8 is the top view of the fourth embodiment of straight-down negative led backlight module of the present invention.
Description of symbols:
1st, 1 ', 1 " backboard
11st, 11 ', 11 " first surface
12 second surfaces
13rd, 13 ', 13 " groove
14 perforation
2nd, 2 ' lamp bar daughter board
21st, 21 ' first face
22 second faces
23rd, 23 ' first adapter
24 second adapters
3rd, 3 ', 3 " LED lamp bar
30 pcb
31st, 31 ', 31 " the 3rd adapter
4 local dimming panels
41 the 4th adapters.
Specific embodiment
For clearly appearing from the feature of the present invention, each assembly in accompanying drawing is only signal and not draws according to profile in kind and ratio, and clipped known assemblies.Additionally, for assuming the coherency that the present invention is illustrated, in different embodiments, same or analogous labelling represents same or analogous assembly.The direction term being previously mentioned in an embodiment, for example: up, down, left, right, before and after etc., is only the direction of refer to the attached drawing, therefore, the direction term of use is used to illustrate, rather than is used for limiting the present invention.
Please referring also to Fig. 1 to Fig. 5, Fig. 1 to Fig. 4 are respectively the explosive view of first embodiment, axonometric chart, top view and the upward view of straight-down negative led backlight module of the present invention, and Fig. 5 is then the sectional view along aa direction in Fig. 2 to Fig. 4.In the present embodiment, straight-down negative led backlight module includes backboard 1, lamp bar daughter board 2, multiple LED lamp bar 3 and Two Areas brightness adjustment control plate 4.The known assemblies such as reflector plate, diffuser plate are eliminated in accompanying drawing.The configuration of straight-down negative led backlight module makes the display floater can normal display image at the rear of the display floater (as liquid crystal panel) (not illustrating) not having tuorbillion optical activity itself providing backlight.
Backboard 1 has relative first surface 11 and second surface 12.The midline position of the first surface 11 of backboard 1 is provided with groove 13.The second surface 12 of backboard 1 is provided with two perforation 14 connecting with groove 13.
Lamp bar daughter board 2 is in groove 13.Lamp bar daughter board 2 has the first relative face 21 and the second face 22.First face 21 of lamp bar daughter board 2 be respectively provided on two sides with string the first adapter 23, that is, the first adapter 23 is in the both sides that two row are divided into the first face 21 of lamp bar daughter board 2, additionally, the first adapter 23 protrudes from groove 13.Second face 22 of lamp bar daughter board 2 is provided with two the second adapters 24, and each second adapter 24 passes through corresponding perforation 14 to protrude from the second surface 12 of backboard 1.The circuit (not illustrating) that first adapter 23 passes through located at lamp bar daughter board 2 is electrically connected with the second adapter 24 respectively.
Each LED lamp bar 3 includes the pcb 30 and multiple led (not illustrating) on pcb 30.LED lamp bar 3 is on the first surface 11 of backboard 1, and the led on LED lamp bar 3 equably configures with respect to display floater.One end of each LED lamp article 3 is additionally provided with the 3rd adapter 31 and is connected with the first adapter 23 corresponding with lamp bar daughter board 2.Therefore, lamp bar daughter board 2 is electrically connected with LED lamp article 3 by the connection of the first adapter 23 and the 3rd adapter 31.
Local dimming panel 4 is on the second surface 12 of backboard 1.Each local dimming panel 4 is provided with the 4th adapter 41 to connect with corresponding second adapter 24.Therefore, each local dimming panel 4 is electrically connected with lamp bar daughter board 2 by the connection of the 4th adapter 41 and the second adapter 24.In addition, because lamp bar daughter board 2 is electrically connected with LED lamp article 3 by the connection of the first adapter 23 and the 3rd adapter 31, and second adapter 24 electrically connected with part the first adapter 23 by the circuit located at lamp bar daughter board 2, so each local dimming panel 4 is electrically connected with a part of LED lamp bar 3 by lamp bar daughter board 2, the brightness fine setting of the led being located in a specific region to be controlled on this part LED lamp bar 3 with feasible region light modulation.
Apparently, in the present embodiment, each local dimming panel 4 is electrically connected with a part of LED lamp bar 3 by lamp bar daughter board 2, it is no longer to be electrically connected with this part LED lamp bar 3 to first surface 11 by second surface 12 cabling of backboard 1 by multiple connecting lines, therefore can reduce wire rod cost and assembling man-hour.
Additionally, in the present embodiment, lamp bar daughter board 2 can be opaque lamp bar daughter board, to prevent the light that led sends to be mapped to perforation 14 through lamp bar daughter board 2 and be not reflected onto display floater, reduce the effective rate of utilization of the light that light source sends.And, the present embodiment simultaneously is not used to limit the present invention, for example, it is possible to the region number according to required control, the quantity of increase and decrease local dimming panel is changed into one or is more than two, and the quantity of the second adapter of the now perforation of backboard and lamp bar daughter board needs corresponding increase and decrease certainly.
Refer to Fig. 6, Fig. 6 is the top view of the second embodiment of straight-down negative led backlight module of the present invention.In the present embodiment, groove 13 is located at the midline position of the first surface 11 of backboard 1.First adapter 23 ' is in string located at the first face 21 ' of lamp bar daughter board 2 '.The centre position of each LED lamp article 3 ' is provided with the 3rd adapter 31 '.
Refer to Fig. 7, Fig. 7 is the top view of the 3rd embodiment of straight-down negative led backlight module of the present invention.In the present embodiment, groove 13 ' is located at the wherein side of the both sides of the first surface 11 ' of backboard 1 '.First adapter 23 ' is in string located at the first face 21 ' of lamp bar daughter board 2 '.One end of each LED lamp article 3 " is provided with the 3rd adapter 31 ".
Refer to Fig. 8, Fig. 8 is the top view of the fourth embodiment of straight-down negative led backlight module of the present invention.In the present embodiment, the number of groove 13 " and lamp bar daughter board 2 ' is all two.Two grooves 13 " are divided into backboard 1 " first surface 11 " both sides.Two lamp bar daughter boards 2 ' are respectively located at corresponding groove 13 " in.First adapter 23 ' is in string located at the first face 21 ' of lamp bar daughter board 2 '.One end of each LED lamp article 3 is provided with the 3rd adapter 31.
In sum, the present invention is because being electrically connected with LED lamp bar by lamp bar daughter board using local dimming panel, it is no longer to be electrically connected with LED lamp bar to first surface by the second surface cabling of backboard by multiple connecting lines, therefore can reduce wire rod cost and assembling man-hour.
The foregoing is only embodiments of the invention, not in order to limit the present invention, all within the spirit and principles in the present invention, any modification, equivalent substitution and improvement made etc., should be included within the scope of the present invention.
Claims (9)
1. straight-down negative light-emitting diode (LED) backlight module it is characterised in that comprising:
Backboard, has relative first surface and second surface, and described first surface is provided with groove, and described second surface is provided with least one perforation connecting with described groove；
Lamp bar daughter board, in described groove, described lamp bar daughter board has the first relative face and the second face, described first face is provided with multiple first adapters, and described first adapter protrudes from described groove, described second face is provided with least one second adapter, and each described second adapter protrudes from described second surface through described perforation accordingly, and described first adapter passes through to electrically connect with described second adapter respectively located at the circuit of described lamp bar daughter board；
Multiple light-emitting diode light bars, on described first surface, and each described light-emitting diode light bar is provided with the 3rd adapter to connect with corresponding described first adapter；And
At least one local dimming panel, on described second surface, and each described local dimming panel is provided with the 4th adapter to connect with corresponding described second adapter.
2. straight-down negative light-emitting diode (LED) backlight module according to claim 1, wherein, described groove is located at the midline position of described first surface.
3. straight-down negative light-emitting diode (LED) backlight module according to claim 2, wherein, described first adapter is in the both sides that two row are divided into described first face, and one end of each described light-emitting diode light bar is provided with described 3rd adapter.
4. straight-down negative light-emitting diode (LED) backlight module according to claim 2, wherein, in string located at described first face, the centre position of each described light-emitting diode light bar is provided with described 3rd adapter to described first adapter.
5. straight-down negative light-emitting diode (LED) backlight module according to claim 1, wherein, described groove is located at the wherein side of the both sides of described first surface.
6. straight-down negative light-emitting diode (LED) backlight module according to claim 5, wherein, in string located at described first face, one end of each described light-emitting diode light bar is provided with described 3rd adapter to described first adapter.
7. straight-down negative light-emitting diode (LED) backlight module according to claim 1, wherein, the number of described groove and described lamp bar daughter board is all two, and two described grooves are divided into the both sides of described first surface, and two described lamp bar daughter boards are respectively in described groove accordingly.
8. straight-down negative light-emitting diode (LED) backlight module according to claim 7, wherein, in string located at described first face, one end of each described light-emitting diode light bar is provided with described 3rd adapter to described first adapter.
9. straight-down negative light-emitting diode (LED) backlight module according to claim 1, wherein, described lamp bar daughter board is opaque lamp bar daughter board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510440610.8A CN106369422A (en) | 2015-07-24 | 2015-07-24 | Direct type light-emitting diode (LED) backlight module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510440610.8A CN106369422A (en) | 2015-07-24 | 2015-07-24 | Direct type light-emitting diode (LED) backlight module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106369422A true CN106369422A (en) | 2017-02-01 |
Family
ID=57879925
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510440610.8A Pending CN106369422A (en) | 2015-07-24 | 2015-07-24 | Direct type light-emitting diode (LED) backlight module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106369422A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1635409A (en) * | 2003-12-26 | 2005-07-06 | 明基电通股份有限公司 | LCD and back light module |
| US20090184660A1 (en) * | 2008-01-21 | 2009-07-23 | Eui-Jeong Kang | Blacklight Unit and Display Device Including the Same |
| CN202017959U (en) * | 2011-02-15 | 2011-10-26 | 冠捷显示科技（厦门）有限公司 | Direct illumination LED backlight module group with light mixing apparatus |
| CN203012300U (en) * | 2011-07-11 | 2013-06-19 | 精工爱普生株式会社 | Display device, electronic apparatus and lighting device |
| CN103322534A (en) * | 2013-06-21 | 2013-09-25 | 深圳市华星光电技术有限公司 | Direct-light-type backlight module lamp strip assembly structure, assembly method and liquid crystal display |
-
2015
- 2015-07-24 CN CN201510440610.8A patent/CN106369422A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1635409A (en) * | 2003-12-26 | 2005-07-06 | 明基电通股份有限公司 | LCD and back light module |
| US20090184660A1 (en) * | 2008-01-21 | 2009-07-23 | Eui-Jeong Kang | Blacklight Unit and Display Device Including the Same |
| CN202017959U (en) * | 2011-02-15 | 2011-10-26 | 冠捷显示科技（厦门）有限公司 | Direct illumination LED backlight module group with light mixing apparatus |
| CN203012300U (en) * | 2011-07-11 | 2013-06-19 | 精工爱普生株式会社 | Display device, electronic apparatus and lighting device |
| CN103322534A (en) * | 2013-06-21 | 2013-09-25 | 深圳市华星光电技术有限公司 | Direct-light-type backlight module lamp strip assembly structure, assembly method and liquid crystal display |
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| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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Application publication date: 20170201 |