CN201196350Y - Back light module unit - Google Patents
Back light module unit Download PDFInfo
- Publication number
- CN201196350Y CN201196350Y CNU2008200074607U CN200820007460U CN201196350Y CN 201196350 Y CN201196350 Y CN 201196350Y CN U2008200074607 U CNU2008200074607 U CN U2008200074607U CN 200820007460 U CN200820007460 U CN 200820007460U CN 201196350 Y CN201196350 Y CN 201196350Y
- Authority
- CN
- China
- Prior art keywords
- circuit board
- module backlight
- fluorescent tube
- utility
- model
- 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
Links
Images
Landscapes
- Planar Illumination Modules (AREA)
Abstract
The utility model discloses a backlight module, which comprises an outer frame, a plurality of first circuit boards, a second circuit board and a plurality of lighting tubes, wherein the first circuit boards and the second circuit board are arranged in the outer frame; the first circuit boards are provided with a plurality of elastic buffer parts; and one end of each lighting tube leans against each elastic buffer part while the other end is connected to the second circuit board.
Description
Technical field
The utility model relates to a kind of module backlight, and particularly relevant for a kind of module backlight of high-reliability.
Background technology
In general LCD, because display panels (Liquid crystal display panel) does not have the function of active illuminating, so below display panels, must dispose a module backlight so that an area source to be provided, so that display panels can reach the purpose of demonstration.
Figure 1A is existing module schematic diagram backlight, and Figure 1B is the local enlarged diagram of existing module backlight.What will illustrate earlier here is, has omitted the housing of module 100 backlight for illustrated simple and clear Figure 1A and Figure 1B.Please also refer to Figure 1A and 1B, existing module 100 backlight mainly comprises a plurality of fluorescent tubes 110, a plurality of connector 120, a circuit board 130 and a low-voltage circuit plate 140.Wherein, an end of fluorescent tube 110 electrically connects with circuit board 130 by connector (connector) 120 respectively, and the other end and low-voltage circuit plate 140 electrically connect.
It should be noted that the manufacturing cost of therefore existing module 100 backlight also can't effectively reduce because fluorescent tube 110 needs to be connected by connector 120 with circuit board 130.Generally speaking, limit, so be easy to expanded by heating under fluorescent tube 110 long-time the uses because the two ends of fluorescent tube 110 are all stiff end and are subjected to housing, and chipping problem.This can make the reliability of whole module backlight 100 and service life reduce, and improved necessity is arranged in fact.
The utility model content
The purpose of this utility model provides a kind of module backlight, and it can effectively avoid fluorescent tube to rupture because of expanded by heating, and then can promote the reliability and the service life of the utility model module backlight.
The utility model provides a kind of module backlight, and it comprises a housing, a plurality of first circuit board, a second circuit board and a plurality of fluorescent tube.Wherein, first circuit board and second circuit board are disposed in the housing.Has a plurality of elastic buffer portion on the first circuit board of the present utility model.One end of fluorescent tube is bearing in the elastic buffer portion, and the other end is connected on the second circuit board.
In module backlight of the present utility model, above-mentioned first circuit board and elastic buffer portion are formed in one.
In module backlight of the present utility model, above-mentioned elastic buffer portion comprises a shell fragment and an arcuate slots, and arcuate slots is around shell fragment.
In module backlight of the present utility model, above-mentioned shell fragment has an indent slit, and an end of fluorescent tube is arranged in the indent slit.
In module backlight of the present utility model, above-mentioned elastic buffer portion comprises a location column and an insulation elastic component, and the location column is disposed on the first circuit board, and the insulation elastic component entangles the location column.
In module backlight of the present utility model, an end of above-mentioned location column has a depression, and depression is lived in an end breasting of fluorescent tube.
In module backlight of the present utility model, above-mentioned location column comprises a discoid body and a column, and discoid body is connected in an end of column, and discoid body has depression.
In module backlight of the present utility model, above-mentioned second circuit board comprises a single layer board and a pair of feedback circuit pattern, two feedback circuit pattern arrangement are on single layer board, and the end that fluorescent tube is connected with second circuit board can electrically connect with two feedback circuit patterns.
In module backlight of the present utility model, above-mentioned second circuit board comprises a plastic plate and a line pattern layer, and the line pattern layer is disposed on the plastic plate, and an end and line pattern layer that fluorescent tube is connected with second circuit board electrically connect.
In module backlight of the present utility model, above-mentioned second circuit board also comprises a fin, is disposed on the plastic plate, and fin has a plurality of electrical contacts, electrically connecting with the line pattern layer, and the fluorescent tube end and the electrical contact electric connection that are connected with second circuit board.
In module backlight of the present utility model, above-mentioned module backlight also comprises an optical diaphragm group, and it is disposed at the fluorescent tube top.
In module backlight of the present utility model, above-mentioned optical diaphragm group comprise diffusion sheet, brightening piece and prismatic lens at least one of them.
Elastic buffer portion is lived in one end breasting of the utility model fluorescent tube, thereby can avoid fluorescent tube cracked because of thermal expansion.In addition, the impact of elastic buffer of the present utility model portion available buffer external force is with further protection fluorescent tube.Since second circuit board of the present utility model can plastic plate and the line pattern layer replace existing circuit board, thereby can significantly reduce manufacturing cost.
Description of drawings
For above-mentioned purpose of the present utility model, feature and advantage can be become apparent, below in conjunction with accompanying drawing the specific embodiment of the present utility model is elaborated, wherein:
Figure 1A is existing module schematic diagram backlight.
Figure 1B is the back side partial schematic diagram of existing module backlight.
Fig. 2 A is the module schematic diagram backlight of the utility model first embodiment.
Fig. 2 B is the local enlarged diagram of the module backlight of the utility model first embodiment.
Fig. 2 C is another elastic buffer portion schematic diagram of the utility model first embodiment.
Fig. 2 D is the schematic diagram of other elasticity of shape buffer part of the utility model first embodiment.
Fig. 3 is the local enlarged diagram of the second circuit board of the utility model first embodiment.
Fig. 4 A is the local enlarged diagram of another second circuit board of the utility model first embodiment.
Fig. 4 B is the local enlarged diagram of second circuit board of another angle of the utility model first embodiment.
Fig. 5 is the local enlarged diagram in the first circuit board place of the utility model second embodiment.
The main element symbol description:
100,200: module backlight
110,240: fluorescent tube
120: connector
130: circuit board
140: the low-voltage circuit plate
210: housing
220: first circuit board
222,234 ': elastic buffer portion
222a: shell fragment
222b: arcuate slots
222c: indent slit
224: the location column
224a: discoid body
224b: column
226: the insulation elastic component
230,230 ': second circuit board
232: single layer board
232 ': plastic plate
234: two feedback circuit patterns
234 ': the line pattern layer
236 ': fin
250: optical diaphragm group
A: depression
C: electrical contact
The specific embodiment
First embodiment
Fig. 2 A is the module schematic diagram backlight of the utility model first embodiment.Please refer to Fig. 2 A, module 200 backlight of the present utility model comprises a housing 210, a plurality of first circuit board 220, a second circuit board 230 and a plurality of fluorescent tubes 240.Wherein, fluorescent tube 240 is electrically connected between first circuit board 220 and the second circuit board 230, and fluorescent tube 240, first circuit board 220 and second circuit board 230 all are disposed in the housing 210.On the practice, fluorescent tube 240 for example is to adopt CCFL (CCFL), and first circuit board 220 for example is the high-tension circuit plate, and second circuit board 230 for example is the low-voltage circuit plate.
Generally speaking, module 200 backlight of the present utility model also can comprise an optical diaphragm group 250, and it is configurable in fluorescent tube 240 tops.Optical diaphragm group 250 of the present utility model can be that monolithic or multi-disc blooming piece are formed, and is not limited at this.On the practice, optical diaphragm group 250 can be diffusion sheet (Diffuserfilm), brightening piece (Brightness enhanced film, BEF) with prismatic lens (Prism sheet) at least one of them.The light scattering more equably that diffusion sheet can make fluorescent tube 240 be sent, brightening piece can promote the brightness that module 200 backlight is presented.In addition, prismatic lens can promote the correctness of beam projecting direction.Certainly, module backlight 200 of the present utility model can according to the optical effect desiring to present and select above-mentioned blooming piece for use.
Fig. 2 B is the local enlarged diagram of the module backlight of the utility model first embodiment.Please refer to Fig. 2 B, have a plurality of elastic buffer portion 222 on the first circuit board 220 of the present utility model.One end of fluorescent tube 240 is bearing in the elastic buffer portion 222, and the other end is connected on the second circuit board 230.Specifically, elastic buffer of the present utility model portion 222 for example comprises a shell fragment 222a and an arcuate slots 222b, and arcuate slots 222b is around living in shell fragment 222a.On the practice, first circuit board 220 can be formed in one with elastic buffer portion 222.In other words, the material of elastic buffer portion 222 is identical material with first circuit board 220.
Because an end of fluorescent tube 240 can be bearing on the shell fragment 222a, therefore be heated and when extending when fluorescent tube 240, shell fragment 222a just can suitably be out of shape so that the effect of buffering to be provided, and then effectively avoids fluorescent tube 240 cracked.Module backlight 200 of the present utility model thereby good reliability can be arranged.On the other hand, because module backlight of the present utility model 200 adopts a plurality of first circuit boards 220, therefore when first circuit board 220 generation wherein was unusual, the maintenance personal only need change a slice circuit board and need not upgrade comprehensively.In other words, maintenance man-hours and maintenance cost can effectively reduce.
Fig. 2 C is another elastic buffer portion schematic diagram of the utility model first embodiment.Please refer to Fig. 2 C, shell fragment 222a of the present utility model can be designed to have an indent slit 222c, wears and is welded among the indent slit 222c in order to fluorescent tube 240 ends.In addition, elastic buffer portion 222 also can be designed to other shape, shown in Fig. 2 D, is not limited at this.
Fig. 3 is the local enlarged diagram of the second circuit board of the utility model first embodiment.Please refer to Fig. 3, in order to reduce manufacturing cost, second circuit board 230 of the present utility model can adopt a single layer board 232 and a pair of feedback circuit pattern 234.Two feedback circuit patterns 234 are formed on the single layer board 232, and an end of fluorescent tube 240 can electrically connect with two feedback circuit patterns 234.Because general second circuit board 230 (low-voltage circuit plate) all adopts expensive double-layer circuit board (not illustrating), therefore second circuit board 230 of the present utility model can further reduce the manufacturing cost of module 200 backlight.
Fig. 4 A is the local enlarged diagram of another second circuit board of the utility model first embodiment.Please refer to Fig. 4 A, in order to reduce manufacturing cost, second circuit board 230 ' of the present utility model can also comprise a plastic plate 232 ' and a line pattern layer 234 '.Particularly, line pattern layer 234 ' is disposed on the plastic plate 232 ', and an end of fluorescent tube 240 can electrically connect with line pattern layer 234 '.Specifically, second circuit board 230 ' can comprise that also one is disposed at the fin 236 ' (rib) on the plastic plate 232 '.In addition, have a plurality of electrical contact C (electrical connect) on the fin 236 ' shown in Fig. 4 B, and an end of fluorescent tube 240 electrically connects with line pattern layer 234 ' by electrical contact C.On the practice, the material of line pattern layer 234 ' for example is to adopt Copper Foil.
Second embodiment
Fig. 5 is the local enlarged diagram in the first circuit board place of the utility model second embodiment.Please refer to Fig. 5, elastic buffer of the present utility model portion 222 ' comprises a location column 224 and an elastic component 226 that insulate.Wherein, location column 224 is disposed on the first circuit board 220, and insulation elastic component 226 entangles location column 224.On the practice, location column 224 can adopt conductive material, and insulation elastic component 226 for example is a plastic spring.
Particularly, location of the present utility model column 224 comprises a discoid body 224a and a column 224b.Wherein, discoid body 224a is connected in the end of column 224b, and discoid body 224a has a depression A.One end of fluorescent tube 240 can cave in A and locatees by breasting.The elastic buffer portion 222 ' of present embodiment can effectively avoid fluorescent tube 240 cracked because of expanded by heating equally.
In sum, elastic buffer portion is lived in an end breasting of the utility model fluorescent tube, thereby can avoid fluorescent tube cracked because of expanded by heating.In addition, the impact of elastic buffer of the present utility model portion available buffer external force is with further protection fluorescent tube.Because second circuit board of the present utility model can adopt single layer board or replace existing circuit board with plastic plate and line pattern layer, thereby can significantly reduce manufacturing cost.
Though the utility model discloses as above with preferred embodiment; right its is not in order to limit the utility model; any those skilled in the art; in not breaking away from spirit and scope of the present utility model; when doing a little modification and perfect, therefore protection domain of the present utility model is worked as with being as the criterion that claims were defined.
Claims (10)
1. module backlight is characterized in that comprising:
One housing;
A plurality of first circuit boards are disposed in this housing, wherein have a plurality of elastic buffer portion on each first circuit board;
One second circuit board is disposed in this housing; And
A plurality of fluorescent tubes, an end of each fluorescent tube is bearing in each elastic buffer portion, and the other end is connected on this second circuit board.
2. module backlight as claimed in claim 1 is characterized in that, those first circuit boards and those elastic buffer portions are formed in one.
3. module backlight as claimed in claim 2 is characterized in that, each elastic buffer portion comprises a shell fragment and an arcuate slots, and this arcuate slots is around this shell fragment.
4. module backlight as claimed in claim 3 is characterized in that, each shell fragment has an indent slit, and an end of each fluorescent tube is arranged in this indent slit.
5. module backlight as claimed in claim 1 is characterized in that, each elastic buffer portion comprises a location column and an insulation elastic component, and those location columns are disposed on those first circuit boards, and this insulation elastic component entangles this location column.
6. module backlight as claimed in claim 5 is characterized in that, each end of locating column has a depression, and an end breasting of each fluorescent tube should depression.
7. module backlight as claimed in claim 1, it is characterized in that, this second circuit board comprises a single layer board and a pair of feedback circuit pattern, this pair feedback circuit pattern arrangement is on this single layer board, and the end that those fluorescent tubes are connected with this second circuit board can electrically connect with this pair feedback circuit pattern.
8. module backlight as claimed in claim 1, it is characterized in that, this second circuit board comprises a plastic plate and a line pattern layer, and this line pattern layer is disposed on this plastic plate, and an end and this line pattern layer that each fluorescent tube is connected with this second circuit board electrically connect.
9. module backlight as claimed in claim 8, it is characterized in that, this second circuit board also comprises a fin, be disposed on this plastic plate, this fin has a plurality of electrical contacts, electrically connecting with this line pattern layer, and each fluorescent tube end and the electric connection of those electrical contacts that are connected with this second circuit board.
10. module backlight as claimed in claim 1 is characterized in that, also comprises an optical diaphragm group, is disposed at those fluorescent tube tops.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200074607U CN201196350Y (en) | 2008-02-27 | 2008-02-27 | Back light module unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200074607U CN201196350Y (en) | 2008-02-27 | 2008-02-27 | Back light module unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201196350Y true CN201196350Y (en) | 2009-02-18 |
Family
ID=40415987
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200074607U Expired - Fee Related CN201196350Y (en) | 2008-02-27 | 2008-02-27 | Back light module unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201196350Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014075363A1 (en) * | 2012-11-13 | 2014-05-22 | 深圳市天时通科技有限公司 | Touch display module |
| WO2022247658A1 (en) * | 2021-05-24 | 2022-12-01 | 苏州欧普照明有限公司 | Light source assembly and lamp |
-
2008
- 2008-02-27 CN CNU2008200074607U patent/CN201196350Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014075363A1 (en) * | 2012-11-13 | 2014-05-22 | 深圳市天时通科技有限公司 | Touch display module |
| WO2022247658A1 (en) * | 2021-05-24 | 2022-12-01 | 苏州欧普照明有限公司 | Light source assembly and lamp |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201696950U (en) | Back light module | |
| CN102428584B (en) | Light supply apparatus and there is the display device of this light supply apparatus | |
| JP5480068B2 (en) | LED backlight unit, LED module for lighting device, liquid crystal display device | |
| CN102927499B (en) | Liquid crystal display device and backlight module thereof | |
| KR101860446B1 (en) | Large Area Light Source | |
| CN102314256A (en) | Touch screen module and mobile terminal applied by same | |
| KR20100114727A (en) | Lamp socket and display device having the same | |
| JP2010102845A (en) | Backlight module and frame therefor | |
| CN201927740U (en) | Light tube connector | |
| CN103629597A (en) | Backlight assembly | |
| CN201196350Y (en) | Back light module unit | |
| CN1971376A (en) | Backlight module and LCD device | |
| CN101769480B (en) | Backlight module with improved fixed lamp tube design and liquid crystal display applying same | |
| CN101162317A (en) | LCD device and back light module unit thereof | |
| CN101280908B (en) | Lamp tube fixing device | |
| CN201487722U (en) | Light emitting diode backlight source and display device with same | |
| CN101943336B (en) | Backlight module and lamp tube fixing seat structure thereof | |
| CN201401698Y (en) | Backlight module | |
| KR20080071502A (en) | Liquid crystal display device | |
| CN102095125B (en) | Side lighting illuminating apparatus | |
| CN103339554A (en) | Display device | |
| CN210465926U (en) | Backlight module and display device | |
| CN201475915U (en) | Connector | |
| CN201688225U (en) | Light-emitting device | |
| CN106597736A (en) | Liquid crystal display module group and liquid crystal display device |
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: 20130719 |
|
| 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: 20130719 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: 20090218 Termination date: 20160227 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |