CN100498456C - Backlight module of liquid crystal display - Google Patents
Backlight module of liquid crystal display Download PDFInfo
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- CN100498456C CN100498456C CNB2005101156287A CN200510115628A CN100498456C CN 100498456 C CN100498456 C CN 100498456C CN B2005101156287 A CNB2005101156287 A CN B2005101156287A CN 200510115628 A CN200510115628 A CN 200510115628A CN 100498456 C CN100498456 C CN 100498456C
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Abstract
This invention relates to a backlight module of a LCD device including multiple L-shaped lamps, a light conduction plate and a lampshade set at both sides of the lamp, a shell with a recess for containing the lamps, the conduction plate and the lampshade, said recess has a base plate and four side walls, among which, a same side wall has multiple through holes, a reflection layer at the recess base for reflecting said lighting rays and a supplier providing set at the other surface with the recess of the shell, each two L-shaped lamps form a rectangle corresponding to the recess side wall and the connection lines of the two lamps forming a rectangle pass through the same through hole to be connected with the connector connecting to the supplier providing device.
Description
Technical field
The invention relates to a kind of LCD and backlight module thereof, refer to a kind of side-light type LCD and backlight module thereof especially.
Background technology
LCD (LCD) is non-self luminous display, must can produce Presentation Function by adding the light source mode, and backlight module is promptly played the part of the role of light source in LCD, be one of important key part and component of LCD.The backlight module of display device be provided with a plurality of fluorescent tubes in its inner can group now, that is group is provided with fluorescent tube on the backboard of backlight module, by the light source of fluorescent tube, to illuminate the display screen of display device.
Fig. 1 is traditional backlight module, and it includes light guide plate 1, L type fluorescent tube 93, reflection horizon 4, housing 5 and power supply unit 961,962, and its middle shell 5 integrates with lampshade, and can make the sidewall 2 energy reflection rays of housing 5.Yet, because the two ends of traditional L type fluorescent tube 93 are connected respectively to different connector 931,932.Therefore, the connecting line 933,934 of L type fluorescent tube 93 must be in the not homonymy outlet of backlight module.
Yet this connecting line 933 is to be connected with connector 931, and connecting line 934 is to be connected with connector 932, and this connector 931,932nd, and in order to connect power supply unit, so power supply unit just can provide fluorescent tube 93 required power supply.Therefore, since connecting line 933,934 in the not homonymy outlet of backlight module, causes traditional backlight module to use lay respectively at backlight module not two power supply units 961,962 of homonymy connect with connector 931,932.
In other words, the employed backlight module of traditional LCD restrain owing to be subjected to L shaped fluorescent tube external form, so power supply unit need be installed in the high-pressure side and the low-pressure side at fluorescent tube diagonal angle.Therefore, during module activation work, the scope that power supply unit produces high heat contains both sides, LCD diagonal angle, and makes the risk that LCD can't operate as normal, and then causes optical quality bad.And, owing to being installed in the both sides, diagonal angle, power supply unit increases the module volume, and make it to be difficult for being installed on system shell, and increased the degree of difficulty of system shell design greatly.
Summary of the invention
The present invention is a kind of backlight module, includes a plurality of L type fluorescent tubes, a plurality of lampshade, a light guide plate, a reflection horizon, a housing and a power supply unit.This L type fluorescent tube is in order to illuminating ray to be provided, and the two ends of its fluorescent tube are connected to same a connector with a connecting line respectively; Light guide plate is positioned at a side of L type fluorescent tube, in order to the homogenising illuminating ray; A plurality of lampshades are positioned at the opposite side of this L type fluorescent tube, in order to indirect illumination light; One housing then includes a groove, and in order to ccontaining fluorescent tube, light guide plate and lampshade, and this groove has a base plate and four sidewalls, and wherein same sidewall has a plurality of perforations; The reflection horizon is positioned at the groove base plate, and is folded between light guide plate and the housing, in order to reflect this illuminating ray; And a power supply unit, be to be positioned at outside the housing, or be mounted on another surface that housing has this groove.In the above-mentioned backlight module, per two L type fluorescent tubes partner should be in the rectangle of recess sidewall, and the connecting line of forming two L type fluorescent tubes of same rectangle can pass same perforation being connected to connector, and this connector is connected with power supply unit.
In addition, the present invention also provides a kind of LCD, comprising: a display panels has a upper side and a downside; A plurality of L type fluorescent tubes, each fluorescent tube is connected with a high-voltage power-line and a low-tension supply line, and this two power lead is connected in a connector with respect to the other end of fluorescent tube, and this fluorescent tube is in order to provide light, wherein per two L type fluorescent tubes are a pair of, and corresponding the arrangement forms a hollow part; One light guide plate is below and this hollow part that is positioned at this display panels downside, upwards enters this display panels in order to guiding and this light of homogenising; A plurality of lampshades are to be positioned at the opposite side of this L type fluorescent tube with respect to this light guide plate, enter this light guide plate in order to reflect this light; One reflection horizon is positioned at the opposite side of this light guide plate with respect to this display panels, reflects this light and enters this light guide plate; One housing, tool one base plate and the formed accommodation space of four sidewalls, the sidewall in this four sidewall has a plurality of perforates, and this accommodation space is in order to ccontaining a plurality of L type fluorescent tubes, this light guide plate, these a plurality of lampshades and this reflection horizon; One power supply unit is to be positioned at outside this housing, is mounted on the another side that this housing type becomes accommodation space.
An aforementioned L type fluorescent tube low-tension supply line length higher pressure power supply line length, and the fluorescent tube periphery that detours and connect in this power lead, this low-tension supply line, this high-voltage power-line and this connector pass these a plurality of perforates after one of them, and this connector is connected with this power supply unit.
In sum, the present invention makes the power lead of L type fluorescent tube in the same side of backlight module outlet, and therefore backlight module of the present invention can be reduced to and use the single power supply supply, and then makes backlight module of the present invention be easy to be assembled in the shell of LCD.In addition, use the single power supply supply can also reduce the coverage that power supply unit produces high heat, reduce the risk that LCD can't operate as normal.
In the backlight module of the present invention, the L type fluorescent tube that is adopted can be any light emitting source that illuminating ray can be provided, and is preferably cold-cathode tube.Backlight module of the present invention, its middle shell and reflection horizon can integrate, and make this illuminating ray of this bottom reflection of groove.Backlight module of the present invention, its middle shell and lampshade can integrate, and make this illuminating ray of this sidewall reflects of this groove.Backlight module of the present invention, its middle shell, reflection horizon and lampshade can integrate, and make the base plate and the equal energy of the sidewall indirect illumination light of groove.Backlight module of the present invention can include a plurality of fluorescent tubes, is preferably at least four L type fluorescent tubes, and forms at least two rectangles.Backlight module of the present invention, wherein adjacent rectangle is stacked mutually.
Description of drawings
Fig. 1 is the three-dimensional exploded view of known backlit module.
Fig. 2 be in the embodiment of the invention 1 backlight module L shaped fluorescent tube synoptic diagram is set.
Fig. 3 is the backlight module three-dimensional exploded view of the embodiment of the invention 2.
Fig. 4 is the LCD three-dimensional exploded view of the embodiment of the invention 3.
Symbol description:
Light guide plate 1 sidewall 2 reflection horizon 4
The 2nd L type fluorescent tube 32 the 3rd L type fluorescent tube 33 the 4th L type fluorescent tube 34
High-voltage power-line 312,322,332,342
Low-tension supply line 310,320,330,340
L type fluorescent tube 93 first rectangles 100 grooves 51
Second rectangle, 200 connecting lines, 310 connectors 311
Connecting line 320 connectors 321 connecting lines 330
Second perforation, 514 connectors, 931 connectors 932
Connecting line 933 connecting lines 934 power supply units 961
Embodiment
Embodiment 1
See also Fig. 2, be the three-dimensional exploded view of fluorescent tube part in the backlight module of present embodiment.In the present embodiment, one has four L type fluorescent tubes, wherein, the one L type fluorescent tube 31 is to electrically connect with first connector 311, the 2nd L type fluorescent tube 32 is to electrically connect with second connector 321, the 3rd L type fluorescent tube 33 is to electrically connect with the 3rd connector 331, and the 4th L type fluorescent tube 34 then electrically connects with the 4th connector 341.In addition, a L type fluorescent tube 31 and the 2nd L type fluorescent tube 32 are combined into one first rectangle, 100, the three L type fluorescent tubes 33 and the 4th L type fluorescent tube 34 then is combined into one second rectangle 200.In the present embodiment, first rectangle 100 is stacked at the top of second rectangle 200.
The two ends of the one L type fluorescent tube 31 are respectively with a low-tension supply line 310, an and high-voltage power-line 312, and electrically connect with connector 311, wherein, the terminal 3111 of connector 311 can supply fluorescent tube 31 1 low-voltages, another terminal 3112 then supplies fluorescent tube 31 1 high voltages, also therefore, has a high-pressure side A1 and a low-pressure side B1 to form respectively at the two ends of a L type fluorescent tube 31.
In this example, low-tension supply line 310 is longer than high-voltage power-line 312, so low-tension supply line 310 can detour a L type fluorescent tube 31 and be connected with connector 311.Same establishes mode by this row, and the two ends of the 2nd L type fluorescent tube 32 also can be connected to the connector 321 that is positioned at the same side with connector 311 respectively with a low-tension supply line 320 and a high-voltage power-line 322.
Simultaneously, the two ends of the 3rd L type fluorescent tube 33 are connected to a connector 331 with a low-tension supply line 330 and a high-voltage power-line 332 respectively; The two ends of the 4th L type fluorescent tube 34 also are connected to a connector 341 with a low-tension supply line 340 and a high-voltage power-line 342 respectively, and the high-pressure side A2 of second rectangle 200 and also formation simultaneously of low-pressure side B2.
Be with, connector 311,321 all is positioned at the same corner of first rectangle 100, connector 331,341 all is positioned at the same corner of second rectangle 200, and connector 311,321 and connector 331,341 stagger mutually.Thus, all low-tension supply line 310,320,330,340 and high-voltage power-lines 312,322,332,342 all can be in the same side of backlight module outlets.And the high-pressure side A2 of the high-pressure side A1 of first rectangle 100 and second rectangle 200 then can stagger mutually, also can avoid the localized accumulated of fluorescent tube heat.
When row's mode of putting of above-mentioned fluorescent tube was applied to a backlight module, the synoptic diagram of each assembly saw also Fig. 3.Outside the L type fluorescent tube of putting except row as described in embodiment 1 31,32,33,34, present embodiment also includes a light guide plate 1 that is positioned at L type fluorescent tube 31,32,33,34 inboards, but the illuminating ray of this light guide plate 1 homogenising L type fluorescent tube; A plurality of lampshades that are positioned at L type fluorescent tube 31,32,33,34 outsides, those lampshades and housing are integrated into one in this case, i.e. and the housing among Fig. 35 utilizes the sidewall 512 of housing 5, illuminating ray can be reflexed in the light guide plate 1; In addition, also comprise a reflection horizon 4 between housing 5 and the light guide plate 1.Combination by this, the backlight module of present embodiment can produce good and uniform illuminating ray.
The groove 51 of housing 5 includes a base plate 511 and four sidewalls 512, and one first perforation 513 and second perforation 514 are arranged on same sidewall 512.Above-mentioned first rectangle of being made up of L type fluorescent tube 31,32 100, second rectangle 200, light guide plate 1 and reflection horizon 4 that L type fluorescent tube 33,34 is formed all can be placed in this groove 51.And when combination, the low-tension supply line 310,320 of first rectangle 100 and high-voltage power-line 312,322 can pass first perforation 513, to be connected to the outer connector 311,321 of housing 5; And 332,342 of the low-tension supply line 330,340 of second rectangle 200 and high-voltage power-lines can pass second perforation 514, to be connected to the connector 331,341 outside the housing 5.
Because connector 311,321,331,341 all is positioned at the same side of housing 5, therefore, connector 311,321,331,341 can be connected to same power supply unit 6.This power supply unit 6 is mounted on the lower surface of housing 5.
As mentioned above, present embodiment is by the arrangement mode that changes the existing L of use type fluorescent tube, makes that the connecting line of L type fluorescent tube can be by the same side outlet of backlight module, and can use single power supply unit, and then significantly reduce the volume of backlight module.
Embodiment 3
As shown in Figure 4, be the LCD of application the foregoing description 1 and 2 backlight modules, primary clustering includes: a display panels 20 and the backlight module 50 that is positioned at its below.Wherein, the structure of backlight module 50 is as described in the embodiment 2, includes the power supply unit 6 that a plurality of L type fluorescent tubes 31,32,33,34, a light guide plate 1, a reflection horizon 4, a housing 5 and are positioned at housing 5 one sides.
In the backlight module 50, first rectangle 100 that L type fluorescent tube 31,32 is formed, with second rectangle, 200 stacked formation one hollow spaces that L type fluorescent tube 33,34 is formed, 1 of light guide plate is below and this hollow space that is positioned at display panels 20; One reflection horizon 4 then is positioned at the downside of light guide plate 1, enters light guide plate 1 with the light that reflects from fluorescent tube, and generally speaking, if the material of housing 5 has reflectivity, then omission can be given in this reflection horizon 4, or integrates with housing 5.
When these backlight module 50 combinations, the low-tension supply line 310,320 of first rectangle 100 and high-voltage power-line 312,322 can pass first perforation 513, to be connected to the connector 311,321 outside the housing 5; And 332,342 of the low-tension supply line 330,340 of second rectangle 200 and high-voltage power-lines can pass second perforation 514, to be connected to the connector 331,341 outside the housing 5.Display panels 20 is gone up in combination at last, then finishes the making of a LCD.
In the LCD that present embodiment disclosed, establish the single power supply supply, therefore can significantly reduce the high heat rating of power supply unit, also reduced the volume of backlight module simultaneously because employed backlight module 50 can only be organized.
The employed backlight module of known LCD, owing to need two power supply units, and two power supply units all can produce high heat, one this both sides, diagonal angle of LCD all are covered by among the high heat, and then cause optical quality bad, compared to this, backlight module of the present invention only need use the single power supply supply, therefore can make that the high heat rating of power supply unit is reduced, and make display effect not be subjected to high heat affecting.
In addition,, also can reduce the volume of backlight module, make the easier shell that is installed on display of backlight module owing to backlight module of the present invention power supply unit capable of reducing using.
The foregoing description only is to give an example for convenience of description, and the interest field that the present invention advocated should be as the criterion so that claim is described certainly, but not only limits to the foregoing description.
Claims (14)
1. backlight module comprises:
At least four L type fluorescent tubes, in order to illuminating ray to be provided, wherein these at least four L type fluorescent tubes are formed at least two rectangles, and the two ends of this L type fluorescent tube are to be electrically connected to same a connector by a connecting line respectively, and the connecting line of these at least four L type fluorescent tubes is in the same side of backlight module outlet;
One light guide plate is a side that is positioned at this L type fluorescent tube, in order to guiding light and this illuminating ray of homogenising;
One housing, wherein to have a groove be that this groove has a base plate and four sidewalls in order to ccontaining this L type fluorescent tube and this light guide plate to this housing, wherein the same side of a sidewall has a plurality of perforations; And
One power supply unit is to be positioned at outside this housing, or is mounted on another surface that this housing has this groove;
Wherein, per two these L type fluorescent tubes partner should be in the rectangle of this recess sidewall, the connector of forming the two L type fluorescent tubes connection of same rectangle is positioned at the same corner of this rectangle, form the connector that the fluorescent tube of different rectangles connects and stagger mutually, and the connecting line of forming this two L type fluorescent tube of same rectangle is to pass same perforation to connect electrically to connector; And the connector that this at least four L type fluorescent tube connects is to be connected with this power supply unit.
2. backlight module according to claim 1, wherein this L type fluorescent tube is a cold-cathode tube.
3. backlight module according to claim 1, this wherein adjacent rectangle is stacked mutually.
4. backlight module according to claim 1, wherein this backlight module also comprises a plurality of lampshades, is to be positioned at the opposite side of this L type fluorescent tube with respect to this light guide plate, in order to reflect this illuminating ray.
5. backlight module according to claim 4, wherein this housing and this lampshade integrate, and make this illuminating ray of this sidewall reflects of this groove.
6. backlight module according to claim 1, wherein this backlight module also comprises a reflection horizon, is the base plate that is positioned at this groove, and is folded between this light guide plate and this housing, in order to reflect this illuminating ray.
7. backlight module according to claim 6, wherein this housing and this reflection horizon integrate, and make this illuminating ray of this bottom reflection of this groove.
8. LCD comprises:
One display panels has a upper side and a downside;
One backlight module comprises:
At least four L type fluorescent tubes, each fluorescent tube is connected with a high-voltage power-line and a low-tension supply line, this two power lead is connected in a connector with respect to the other end of fluorescent tube, this fluorescent tube is in order to provide light, wherein these at least four L type fluorescent tubes are formed at least two rectangles, the corresponding arrangement forms a hollow part, and the connector of forming the two L type fluorescent tubes connection of same rectangle is positioned at the same corner of this rectangle, and the connector of forming the fluorescent tube connection of different rectangles staggers mutually;
One light guide plate is below and this hollow part that is positioned at this display panels downside, upwards enters this display panels in order to guiding and this light of homogenising;
One housing, tool one base plate and the formed accommodation space of four sidewalls, the sidewall in this four sidewall has a plurality of perforates, and this accommodation space is in order to ccontaining this a plurality of L type fluorescent tubes and this light guide plate; And
One power supply unit is positioned at outside this housing, is mounted on the another side that this housing forms accommodation space;
The low-tension supply line length higher pressure power supply line length of aforementioned at least four L type fluorescent tubes, and the fluorescent tube periphery that detours and connect in this power lead, this low-tension supply line, this high-voltage power-line are in the same side of backlight module outlet, this low-tension supply line, this high-voltage power-line and this connector pass these a plurality of perforates after one of them, and this connector is connected with this power supply unit.
9. LCD according to claim 8, wherein this L type fluorescent tube is a cold-cathode tube.
10. LCD according to claim 8, wherein this hollow part is a rectangle.
11. LCD according to claim 8, wherein this backlight module also comprises a plurality of lampshades, is positioned at the opposite side of this L type fluorescent tube with respect to this light guide plate, enters this light guide plate in order to reflect this light.
12. LCD according to claim 11, wherein this housing and this lampshade integrate, and make this illuminating ray of this sidewall reflects of this groove.
13. LCD according to claim 8, wherein this backlight module also comprises a reflection horizon, is positioned at the opposite side of this light guide plate with respect to this display panels, reflects this light and enters this light guide plate.
14. LCD according to claim 13, wherein this housing and this reflection horizon integrate, and make this illuminating ray of this bottom reflection of this groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101156287A CN100498456C (en) | 2005-11-08 | 2005-11-08 | Backlight module of liquid crystal display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101156287A CN100498456C (en) | 2005-11-08 | 2005-11-08 | Backlight module of liquid crystal display |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1758110A CN1758110A (en) | 2006-04-12 |
| CN100498456C true CN100498456C (en) | 2009-06-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005101156287A Active CN100498456C (en) | 2005-11-08 | 2005-11-08 | Backlight module of liquid crystal display |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11670900B2 (en) | 2019-02-05 | 2023-06-06 | Emergency Technology, Inc. | Universal smart adaptor |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7876489B2 (en) * | 2006-06-05 | 2011-01-25 | Pixtronix, Inc. | Display apparatus with optical cavities |
| CN109683395A (en) * | 2019-01-28 | 2019-04-26 | 青岛理工大学 | Side-in type backlight module, liquid crystal display device and backlight plate optical inspection method |
-
2005
- 2005-11-08 CN CNB2005101156287A patent/CN100498456C/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11670900B2 (en) | 2019-02-05 | 2023-06-06 | Emergency Technology, Inc. | Universal smart adaptor |
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| Publication number | Publication date |
|---|---|
| CN1758110A (en) | 2006-04-12 |
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Owner name: YOUDA PHOTOELECTRIC CO., LTD. Free format text: FORMER OWNER: GUANGHUI ELECTRONIC CO., LTD. Effective date: 20071130 |
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Effective date of registration: 20071130 Address after: Hsinchu city of Taiwan Province Applicant after: AU Optronics Corporation Address before: Taoyuan County of Taiwan Province Applicant before: Guanghui Electronic Co., Ltd. |
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