CN201170825Y - Backlight component - Google Patents
Backlight component Download PDFInfo
- Publication number
- CN201170825Y CN201170825Y CNU2008200067001U CN200820006700U CN201170825Y CN 201170825 Y CN201170825 Y CN 201170825Y CN U2008200067001 U CNU2008200067001 U CN U2008200067001U CN 200820006700 U CN200820006700 U CN 200820006700U CN 201170825 Y CN201170825 Y CN 201170825Y
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- CN
- China
- Prior art keywords
- circuit board
- drive circuit
- backlight assembly
- fluorescent tube
- disposed
- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses a backlight component, which comprises a light box, a first drive circuit board and a plurality of strip lamps. The strip lamps and the first drive circuit board are arranged in the light box. In addition, the strip lamps are electrically connected with the first drive circuit board. All of the strip lamps are provided with an axial line, and are bent again and again, thus forming a plurality of included angles with the axial line. The included angles are larger and larger in the direction far from the first drive circuit board.
Description
Technical field
The utility model relates to a kind of backlight assembly, and particularly relevant for a kind of backlight assembly of straight-down negative.
Background technology
In general LCD, because display panels (Liquid crystal display panel) does not have the function of active illuminating, so the display panels below must dispose a backlight assembly,, display panels shows required light source so that being provided.
Fig. 1 is the synoptic diagram of traditional backlight assembly.Please refer to Fig. 1, traditional backlight assembly 100 comprises a lamp box 102, a plurality of cold cathode fluorescent lamp pipe 104 and one drive circuit plate 106.Wherein, cold cathode fluorescent lamp pipe 104 all is disposed in the lamp box 102 with drive circuit board 106, and cold cathode fluorescent lamp pipe 104 can electrically connect with drive circuit board 106.As shown in Figure 1, the inverted rectifier (inverter) 107 on the drive circuit board 106 can be luminous in order to drive cold cathode fluorescent lamp pipe 104.Brightness that it should be noted that cold cathode fluorescent lamp pipe 104 has the problem of successively decreasing with away from the direction of inverted rectifier 107 probably.The brightness meeting that area I I presented of backlight assembly 100 is dark than area I as shown in Figure 1.This can make backlight assembly 100 that uniform surface light source can't be provided, and then influences the display quality of display panels.If in order to promote the area source uniformity coefficient of backlight assembly 100, and all connect inverted rectifier 107, then can cause the manufacturing cost of backlight assembly 100 significantly to improve at the two ends of cold cathode fluorescent lamp pipe 104.
Summary of the invention
One of them purpose of the utility model is providing a kind of backlight assembly exactly, and it can provide uniform surface light source and have lower manufacturing cost.
The utility model proposes a kind of backlight assembly and comprise a lamp box, one first drive circuit board and a plurality of fluorescent tube.Wherein, the fluorescent tube and first drive circuit board are disposed at the side in the lamp box.In addition, fluorescent tube is electrically connected to first drive circuit board.Each fluorescent tube has an axis, and each fluorescent tube bends repeatedly and with axes intersect to form a plurality of angles.Wherein, the size of angle is with cumulative away from the direction of first drive circuit board.
In an embodiment of the present utility model, the first above-mentioned drive circuit board comprises a first circuit board and a plurality of inverted rectifier, and inverted rectifier is disposed on the first circuit board.
In an embodiment of the present utility model, above-mentioned backlight assembly also comprises one second drive circuit board, and fluorescent tube is connected between first drive circuit board and second drive circuit board.In addition, angle is with towards the direction of first drive circuit board and second drive circuit board decrescence.
In an embodiment of the present utility model, the second above-mentioned drive circuit board comprises a second circuit board and a plurality of inverted rectifier, and inverted rectifier is disposed on the second circuit board.
In an embodiment of the present utility model, above-mentioned fluorescent tube comprises the cold cathode fluorescent lamp pipe.
In an embodiment of the present utility model, above-mentioned backlight assembly also comprises an optical diaphragm group, and it is disposed at the fluorescent tube top.
In an embodiment of the present utility model, above-mentioned optical diaphragm group comprise diffusion sheet, brightening piece and prismatic lens at least one of them.
In an embodiment of the present utility model, above-mentioned backlight assembly also comprises a reflector plate, and it is disposed at the bottom in the lamp box.
Fluorescent tube of the present utility model is more away from first drive circuit board, and the angle of light tube bending is bigger, and then the lamp luminescence area away from the zone of first drive circuit board is effectively improved.General backlight assembly has the darker phenomenon of brightness away from the zone of drive circuit board, and backlight assembly of the present utility model can effectively provide uniform surface light source.
For above-mentioned and other purposes, feature and advantage of the present utility model can be become apparent, preferred embodiment cited below particularly, and conjunction with figs. are described in detail below.
Description of drawings
Fig. 1 illustrates the synoptic diagram into the traditional backlight assembly.
Fig. 2 A is the backlight assembly synoptic diagram of the utility model first embodiment.
Fig. 2 B is the backlight assembly diagrammatic cross-section of the utility model first embodiment.
Fig. 3 is the synoptic diagram of the backlight assembly of second embodiment.
Embodiment
First embodiment
Fig. 2 A is the backlight assembly synoptic diagram of the utility model first embodiment.Please refer to Fig. 2 A, backlight assembly 200 of the present utility model comprises a lamp box 202, a plurality of fluorescent tube 204 and one first drive circuit board 206.Wherein, fluorescent tube 204 is disposed in the lamp box 202, and first drive circuit board 206 is disposed at the side in the lamp box 202, and fluorescent tube 204 is electrically connected to first drive circuit board 206.In one embodiment, fluorescent tube 204 can be the cold cathode fluorescent lamp pipe.First drive circuit board 206 can comprise a first circuit board 206a and a plurality of inverted rectifier (inverter) 206b.Particularly, inverted rectifier 206b is disposed on the first circuit board 206a, and is luminous to drive fluorescent tube 204.
For the brightness that improves traditional backlight assembly 100 (as shown in Figure 1) has the problem of successively decreasing with away from the direction of inverted rectifier 107 probably.Fluorescent tube 204 of the present utility model has an axis A, and fluorescent tube 204 bends repeatedly and intersect with axis A along the direction of axis A, to form a plurality of angle theta 1, θ 2 and θ 3.Specifically, the size of angle theta 1, θ 2 and θ 3 is with cumulative away from the direction of first drive circuit board 206.Shown in Fig. 2 A, angle theta 3 can be greater than angle theta 2, and angle theta 2 is greater than angle theta 1.
Thus, the light-emitting area of the utility model fluorescent tube 204 just can be promoting away from the direction of first drive circuit board 206 gradually, and then the brightness that improves traditional vertical bar shape fluorescent tube has the problem of successively decreasing with away from the direction of inverted rectifier 107 (as shown in Figure 1).Therefore, under the considering who takes into account manufacturing cost, backlight assembly 200 of the present utility model can effectively provide uniform surface light source.Certainly, have in the affiliated technical field and know that usually the knowledgeable should know the needs of the size of the visual backlight assembly 200 of number of times that fluorescent tube 204 bends repeatedly and optical effect and do suitable adjustment, is not only limited in order to explanation at this.
Shown in Fig. 2 B, backlight assembly 200 of the present utility model also can comprise an optical diaphragm group 210 and a reflector plate 212.This optical diaphragm group 210 is configurable in fluorescent tube 204 tops, and reflector plate 212 configurable bottoms in lamp box 202.Particularly, but the light that reflector plate 212 usable reflection fluorescent tubes 204 send towards lamp box 202 bottoms, and then effectively promote light utilization.On the other hand, above-mentioned optical diaphragm group 210 can comprise diffusion sheet (diffuser film), brightening piece (brighmess enhanced film, BEF) with prismatic lens (prism sheet) at least one of them.The light scattering more equably that above-mentioned diffusion sheet can make fluorescent tube 204 be sent, and brightening piece can promote the brightness that backlight assembly 200 is presented.In addition, prismatic lens can promote the correctness of beam projecting direction.Backlight assembly 200 of the present utility model can according to the optical effect desiring to present and select above-mentioned blooming piece for use.
Second embodiment
Second embodiment and first embodiment are similar, and both are the main difference part: the lamp tube ends of second embodiment is equiped with inverted rectifier (inverter) respectively.Fig. 3 is the synoptic diagram of the backlight assembly of second embodiment.Please examine Fig. 3, the backlight assembly 300 of present embodiment also comprises one second drive circuit board 208, and fluorescent tube 204 is connected between first drive circuit board 206 and second drive circuit board 208.In detail, second drive circuit board 208 comprises a second circuit board 208a and a plurality of inverted rectifier 208b, and inverted rectifier 208b is disposed on the second circuit board 208a.In other words, the two ends of fluorescent tube 204 ' are electrically connected to two inverted rectifier 206b and 208b respectively, with the brightness of guaranteeing that fluorescent tube 204 ' is presented.
Specifically, fluorescent tube 204 ' as shown in Figure 3 bends repeatedly and intersects with axis A along the direction of axis A, to form a plurality of angle theta 1, θ 2, θ 1 ' and θ 2 '.The angle of these angles is with respectively towards the direction of first drive circuit board 206 and second drive circuit board 208 decrescence.In detail, angle theta 2 can be greater than angle theta 1, and angle theta 2 ' can be greater than angle theta 1 '.Thus, the light-emitting area of fluorescent tube 204 ' more can be healed greatly near the center of backlight assembly 300.Therefore, see through the profile and the layout that change fluorescent tube 204 ', and then can effectively reduce the use number of fluorescent tube 204 ', and the area source that backlight assembly 300 is presented there is favorable uniformity.
In sum, fluorescent tube of the present utility model is more away from first drive circuit board, and the angle of light tube bending is bigger, and then the lamp luminescence area away from the zone of first drive circuit board can effectively be improved.Compared to conventional art, backlight assembly of the present utility model can effectively provide uniform surface light source, and has lower manufacturing cost.In addition, the two ends of the utility model fluorescent tube optionally are electrically connected to two brightness of inverted rectifier to guarantee that fluorescent tube is presented respectively, and pass through to change the profile and the layout of fluorescent tube, and then can effectively reduce the use number of fluorescent tube.
Though the utility model discloses as above with preferred embodiment; right its is not in order to limit the utility model; anyly have the knack of this skill person; in not breaking away from spirit and scope of the present utility model; when doing a little change and retouching, therefore protection domain of the present utility model is worked as with being as the criterion that claim was defined.
Claims (8)
1. a backlight assembly is characterized in that, comprising:
One lamp box;
One first drive circuit board is disposed at the side in this lamp box; And
A plurality of fluorescent tubes, be disposed in this lamp box and be electrically connected to this first drive circuit board, wherein respectively this fluorescent tube has an axis, and respectively this fluorescent tube bend repeatedly and with this axes intersect forming a plurality of angles, and the size of those angles is with cumulative away from the direction of this first drive circuit board.
2. backlight assembly as claimed in claim 1 is characterized in that, this first drive circuit board comprises a first circuit board and a plurality of inverted rectifier, and those inverted rectifiers are disposed on this first circuit board.
3. backlight assembly as claimed in claim 1, it is characterized in that, also comprise one second drive circuit board, those fluorescent tubes are connected between this first drive circuit board and this second drive circuit board, and those angles are with towards the direction of this first drive circuit board and this second drive circuit board decrescence.
4. backlight assembly as claimed in claim 3 is characterized in that, this second drive circuit board comprises a second circuit board and a plurality of inverted rectifier, and those inverted rectifiers are disposed on this second circuit board.
5. backlight assembly as claimed in claim 1 is characterized in that those fluorescent tubes comprise the cold cathode fluorescent lamp pipe.
6. backlight assembly as claimed in claim 1 is characterized in that, also comprises an optical diaphragm group, is disposed at those fluorescent tube tops.
7. backlight assembly as claimed in claim 6 is characterized in that, this optical diaphragm group comprise diffusion sheet, brightening piece and prismatic lens at least one of them.
8. backlight assembly as claimed in claim 1 is characterized in that, also comprises a reflector plate, is disposed at the bottom in this lamp box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200067001U CN201170825Y (en) | 2008-02-22 | 2008-02-22 | Backlight component |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200067001U CN201170825Y (en) | 2008-02-22 | 2008-02-22 | Backlight component |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201170825Y true CN201170825Y (en) | 2008-12-24 |
Family
ID=40209877
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200067001U Expired - Fee Related CN201170825Y (en) | 2008-02-22 | 2008-02-22 | Backlight component |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201170825Y (en) |
-
2008
- 2008-02-22 CN CNU2008200067001U patent/CN201170825Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: CPT TECHNOLOGY (GROUP) CO., LTD. Free format text: FORMER OWNER: CHINA PROJECTION TUBE CO., LTD. Effective date: 20130722 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: TAIWAN, CHINA TO: 350000 FUZHOU, FUJIAN PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20130722 Address after: 350000, Fujian, Fuzhou Province, Mawei West Road, No. 1, building 6, third, fourth floor Patentee after: CPT DISPLAY TECHNOLOGY (SHENZHEN)CO., LTD. Address before: Taiwan, Taipei, China Zhongshan North Road three paragraph twenty-two Patentee before: Chunghwa Picture Tubes Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081224 Termination date: 20160222 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |