CN101261398A - Backlight module and lamp tube cover set thereof - Google Patents
Backlight module and lamp tube cover set thereof Download PDFInfo
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- CN101261398A CN101261398A CNA2007100379338A CN200710037933A CN101261398A CN 101261398 A CN101261398 A CN 101261398A CN A2007100379338 A CNA2007100379338 A CN A2007100379338A CN 200710037933 A CN200710037933 A CN 200710037933A CN 101261398 A CN101261398 A CN 101261398A
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- lamp tube
- tube cover
- broadside
- group
- edge
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- IHQKEDIOMGYHEB-UHFFFAOYSA-M sodium dimethylarsinate Chemical class [Na+].C[As](C)([O-])=O IHQKEDIOMGYHEB-UHFFFAOYSA-M 0.000 claims description 10
- 230000000994 depressogenic effect Effects 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 13
- 239000000758 substrate Substances 0.000 abstract description 10
- 230000000295 complement effect Effects 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000005452 bending Methods 0.000 abstract 1
- 230000002265 prevention Effects 0.000 abstract 1
- 230000003287 optical effect Effects 0.000 description 6
- 238000004080 punching Methods 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000000153 supplemental effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Planar Illumination Modules (AREA)
- Liquid Crystal (AREA)
Abstract
The invention discloses a lamp tube cover group which can be applied in a backlight module, and comprises two lamp tube covers, wherein each lamp tube cover is provided with a side edge, a wide edge and a short edge, the wide edge and the short edge extend from two sides of the side edge, and the opposite edges of the two wide edges of the two lamp tube covers are provided with structures with complementary shapes. When the lamp tube cover group is manufactured, firstly, a plate is stamped to form at least two lamp tube cover substrates, and the opposite edges of the lamp tube cover substrates are complementary in shape; and bending the two lamp tube cover substrates to form the two lamp tube covers. The invention also provides a backlight module using the lamp tube cover. The invention can save about 10-15% of materials for manufacturing a group of lamp tube cover groups, the narrowest part of the wide edge of each lamp tube cover is wide enough to meet the requirement of light leakage prevention, and the widest part of the wide edge is wide enough to support the light guide plate.
Description
[technical field]
The invention relates to a kind of module backlight, particularly relevant for a kind of module backlight that adopts the lamp tube cover group.
[background technology]
General liquid crystal indicator inside all has the module backlight that light source is provided for display panels.In this module backlight, can select to adopt one or two group of fluorescent tube as light source according to actual needs, use the lamp tube cover of respective numbers simultaneously, cover respectively and respectively organize fluorescent tube.Below two lamp tube covers are considered as one group, be referred to as " lamp tube cover group ", and two lamp tube covers in this lamp tube cover group can be arranged at jointly in the module backlight, also can be arranged at respectively in two modules backlight.
Please refer to shown in Figure 1ly, existing lamp tube cover group 10 comprises identical two lamp tube covers 11,12 of shape and structure.Two lamp tube covers 11,12 include a side 110,120, one broadsides 112,122 and a minor face 114,124.The width of two broadsides 112,122 is d1.Broadside 112,122 is in order to the supplemental support light guide plate, therefore its width should reach certain requirement, if the width of broadside 112,122 then can't effectively support light guide plate inadequately, and can cause the phenomenon of light leak, and the too wide waste of material that then causes of the width of broadside 112,122 is unfavorable for saving cost.
Therefore, be necessary to provide a kind of can be in the lamp tube cover group of guaranteeing to save as far as possible under the lighttight prerequisite material.
[summary of the invention]
A wherein purpose of the present invention is to provide a kind of lamp tube cover group, and its structure is arranged and can effectively be saved material, thereby saves cost.
Another object of the present invention is to provide a kind of module backlight, it can adopt a lamp tube cover group or the lamp tube cover in this lamp tube cover group at least, and manufacturing materials can be effectively saved in the design of this lamp tube cover group, thereby can reduce the cost of module backlight.
Other purpose of the present invention and advantage can be further understood from the disclosed technical characterictic of the present invention.
For realizing a wherein purpose of the present invention, the present invention adopts following technical scheme: a kind of lamp tube cover group, be arranged at least one module backlight, this lamp tube cover group includes two lamp tube covers, each lamp tube cover all has a side and reaches from an extended in the same way broadside in the both sides of this side and a minor face, the shape complementarity of the relative two edges of two broadsides of this two lamp tube cover.
The broadside edge of above-mentioned each lamp tube cover is undaform, triangle sawtooth pattern or trapezoidal sawtooth pattern.So-called " shape complementarity " mainly is meant the two edges shape difference of two lamp tube covers, but just can slitless connection, the narrowest place of the broadside of corresponding another lamp tube cover of the widest part of the broadside of a lamp tube cover, and vice versa.
For realizing another object of the present invention, the present invention adopts following technical scheme: a kind of module backlight includes: a backboard, at least onely be arranged at the lamp tube cover of this backboard one side, two lamp tube sockets that are arranged at the two ends of this lamp tube cover respectively, and two ends are inserted in the fluorescent tube in this two lamp tube socket; Wherein this lamp tube cover have a side and from the both sides of this side an extended broadside and a minor face, the broadside of this lamp tube cover has the edge of a undaform or sawtooth pattern.
The lamp tube cover of above-mentioned module backlight has a side and from an extended broadside of side and a minor face, this broadside has the edge of a undaform or sawtooth pattern.
Compared to prior art, lamp tube cover group of the present invention is to adopt the structure of complementary type to arrange, make this lamp tube cover group and can save about material of 10% to 15%, and the width at the narrowest place of the broadside of each lamp tube cover is enough to satisfy the requirement of anti-light leak, and the width of its widest part enough supports light guide plate.
[description of drawings]
Fig. 1 is the structural representation of existing lamp tube cover group.
Fig. 2 A is the manufacturing intermediateness figure according to the lamp tube cover group of the first embodiment of the present invention.
Fig. 2 B is the structural representation according to the lamp tube cover group of the first embodiment of the present invention.
Fig. 3 A and Fig. 3 B are existing lamp tube cover group and the comparison synoptic diagram of lamp tube cover group of the present invention on the material use mode.
Fig. 4 A and Fig. 4 B are in the module backlight that adopts a lamp tube cover of the present invention, assembling of the structure of backboard and lamp tube cover and decomposing schematic representation.
Fig. 5 is for showing the optical characteristics comparison test findings of a lamp tube cover that adopts the first embodiment of the present invention and the flat display apparatus that adopts existing lamp tube cover.
Fig. 6 is the structural representation according to the lamp tube cover group of the second embodiment of the present invention.
Fig. 7 is the structural representation according to the lamp tube cover group of the third embodiment of the present invention.
[embodiment]
See also shown in Fig. 2 B, lamp tube cover group 30 of the present invention includes first lamp tube cover 31 and second lamp tube cover 32, this lamp tube cover group 30 can be arranged at least one module backlight (seeing Fig. 4 A and Fig. 4 B), promptly first lamp tube cover 31 and second lamp tube cover 32 can be arranged on the same module backlight, or are arranged at as required and respectively on the different modules backlight.
Consult in addition shown in Fig. 2 A, according to first embodiment of lamp tube cover group 30 of the present invention, the manufacture method of this lamp tube cover group 30 is as follows: at first, provide a sheet metal (not indicating), for example aluminium plate; Then, this sheet metal of punching press, promptly on this sheet material continuously punching press with integrally formed some groups (only showing one group among the figure) lamp tube cover substrate groups 2.Each lamp tube cover substrate group 2 forms at least two lamp tube cover substrates 21,22 by punching press, and make the opposite edges of this two lamp tube covers substrate 21,22 be shape complementarity, promptly the relative two edges 3120 of this two lamp tube covers substrate 21,22 and 3220 width are the variations that is the width alternating expression, for example be trapezoidal sawtooth pattern shown in the figure, the two opposing edges 3140 and 3240 of two lamp tube cover substrates 21,22 are type linearly then; At last, bend the opposing edge 3140,3240 of linear pattern of each lamp tube cover substrate 21 or 22 respectively, to form first lamp tube cover 31 and second lamp tube cover 32 as shown in Fig. 2 B.
Above-mentioned first lamp tube cover 31 includes first side 310, and from vertically extended in the same way first broadside 312 in these 310 both sides, first side and first minor face 314.Above-mentioned second lamp tube cover 32 includes second side 320, and from vertically extended in the same way second broadside 322 in the both sides of this second side 320 and second minor face 324.This first broadside 312 has first edge 3120 that is trapezoidal sawtooth pattern, 322 of this second broadsides have second edge 3220 that is trapezoidal sawtooth pattern, and the shape at first edge 3120 of this first broadside 312 is the shape complementarities with second edge 3220 of second broadside 322, thereby makes win edge 3120 and second edge 3220 can slitless connection.The widest part width identical (being d1) of first broadside 312 and second broadside 322, the narrowest place width also identical (being d2), and the widest part of first broadside 312 is corresponding to the narrowest place of second broadside 322, and vice versa.
See also shown in Fig. 3 A and Fig. 3 B, it demonstrates existing technology and the difference of the present invention on the use-pattern of sheet material.In the existing lamp tube cover group 10 shown in Fig. 3 A, support light guide plate (not shown) and lighttight requirement for satisfying, each width to the broadside 112,122 of lamp tube cover 11,12 all is designed to d1, and therefore in existing lamp tube cover group 10, two broadsides, 112 employed sheet material width are 2d1.And by the lamp tube cover group 30 of the present invention shown in Fig. 3 B, first and second broadside 312,322 employed sheet material width are d1+d2.Because d2 is less than d1.Therefore, compared to prior art, the width that lamp tube cover group 30 of the present invention can be saved sheet material is d1-d2.In the present embodiment, make a lamp tube cover group 30 and can save the sheet material of 10%-15% approximately than making existing lamp tube cover group 10.
See also shown in Fig. 4 A and Fig. 4 B, it shows that a wherein lamp tube cover 31 with lamp tube cover group of the present invention is installed on the synoptic diagram in the module backlight.Except that described lamp tube cover 31, this module backlight also comprises a backboard 34, is separately positioned on two tube faces 35 at the two ends of lamp tube cover 31 (only demonstrating among the figure), and a fluorescent tube 36, and two electrode tips of this fluorescent tube 36 are contained in respectively in this two tube face 35.These backboard 34 middle parts are inwardly to go out a groove from the negative, promptly seem a boss 341 from the front, and the broadside 312 of lamp tube cover 31 is accommodated in the depressed part 342 that closes on boss 341.The edge of this boss 341 is corresponding with the shape at the edge 3120 of lamp tube cover 31, and the height of this boss 341 equals the thickness of the broadside 312 of lamp tube cover 31, thereby the inside surface of the broadside 312 of lamp tube cover 31 is mutually concordant with the inside surface of boss 341, and both slitless connections, with firm support light guide plate (not shown), shown in Fig. 4 B.
See also shown in Figure 5ly, it show to adopt the optical characteristics comparative test result of a lamp tube cover 31 with the flat display apparatus that adopts existing lamp tube cover 11 of the first embodiment of the present invention.Subordinate list is compared at brightness value, chromatic value and three parameters of uniformity coefficient among the figure.In illustration comparative approach of the present invention, at first need on the panel of flat display apparatus, choose 9 test points, include the central point of panel, and be positioned at 8 points on four edges of panel, and 8 points are respectively 10% to go definition so that height is wide, are measured by the direction of a photodetector with vertical measured panel.From Fig. 5 measured experimental data as can be seen, the lamp tube cover of present embodiment is compared with existing lamp tube cover, the brightness value of 9 test points of flat display apparatus of lamp tube cover that adopts present embodiment is all greater than 4500cd/m
2(candela/square metre) meets the requirement of flat display apparatus to briliancy, adopts the present embodiment lamp tube cover and the brightness value of each the corresponding test point that adopts the flat display apparatus that has lamp tube cover now all to differ at ± 50cd/m
2Within, especially the brightness value of the 5th point (the normally picture central point of flat display apparatus) only differs-20cd/m
2It has been generally acknowledged that brightness value all is considered as no change in ± 50 scopes.
So-called X, Y chromatic value, its variation can have influence on human eye and experience change in color (as red partially etc.), usually the tolerance allowed band that should be worth is ± 0.015, in one of the experimental data institute foundation of Fig. 5 specific flat display apparatus, the specification of X colourity should be 0.305 ± 0.015, the specification of Y colourity should be 0.315 ± 0.015, and from the parameter of each test point shown in Fig. 5 as can be known, the chromatic value of flat display apparatus that adopts the present embodiment lamp tube cover is all in this specification limit.And subordinate list it can also be seen that from figure, adopt the average chrominance value of flat display apparatus on X and Y direction of present embodiment lamp tube cover to be respectively 0.3038 and 0.3134, and adopt the average chrominance value of flat display apparatus on X and Y direction of existing lamp tube cover to be respectively 0.3039 and 0.3128, both are compared learn, adopting the difference of chromatic value and the chromatic value of the flat display apparatus that adopts existing lamp tube cover of the flat display apparatus of present embodiment lamp tube cover is in ± 0.001 scope.As everyone knows, chromatic value feels it is unconverted to human eye in ± 0.001 scope.
In addition, adopting the uniformity coefficient (i.e. the minimum value and the peaked ratio of the briliancy of surveying at 9 test point places) of the flat display apparatus of present embodiment lamp tube cover is 87%, and this uniformity coefficient value meets industrywide standard greater than 80%.
In sum, adopt the optical characteristics of flat display apparatus of lamp tube cover 31 of the present invention close with the optical characteristics of the flat display apparatus that adopts existing lamp tube cover 11, the design of lamp tube cover group 30 of the present invention can't influence the optical effect of module backlight.
See also shown in Figure 6ly, according to the lamp tube cover group 40 of second embodiment of the invention, it includes first lamp tube cover 41 and second lamp tube cover 42.This first lamp tube cover 41 and second lamp tube cover 42 have first broadside 412 and second broadside 422 respectively, and two broadsides, 412,422 shape complementarities.Be with the difference of first embodiment: first edge 4120 and second edge 4220 of this second broadside 422 of this first broadside 412 is the triangle sawtooth pattern of complementary structure.
See also shown in Figure 7ly, according to the lamp tube cover group 50 of third embodiment of the invention, it includes first lamp tube cover 51 and second lamp tube cover 52.This first lamp tube cover 51 and this second lamp tube cover 52 have first broadside 512 and second broadside 522 respectively, and two broadsides, 512,522 shape complementarities.Be with the difference of first embodiment: first edge 5120 of this first broadside 512 all is undaform or sinusoidal wave pattern with second edge 5220 of this second broadside 522.
Undaform that is disclosed in above-mentioned preferred embodiment (or sinusoidal wave pattern) and the sawtooth pattern, the industry those of ordinary skill all can be known by inference, and lamp tube cover group of the present invention also can have the complementary structure of other shape.
Backlight module of the present invention has a following advantage at least: backlight module of the present invention has adopted one at least Wherein lamp tube cover in the lamp tube cover group, and arrange rationally because of the structure of this lamp tube cover group, two in every group The shape complementarity of lamp tube cover, thus can save raw material when making, and the optical characteristics of this lamp tube cover and Supporting construction to LGP is all unaffected.
Claims (14)
1. lamp tube cover group, be arranged at least one module backlight, this lamp tube cover group includes two lamp tube covers, each lamp tube cover all has a side and from an extended in the same way broadside in the both sides of this side and a minor face, it is characterized in that: the shape complementarity of the relative two edges of two broadsides of this two lamp tube cover.
2. lamp tube cover group as claimed in claim 1 is characterized in that: the relative two edges slitless connection of two broadsides of two lamp tube covers.
3. lamp tube cover group as claimed in claim 1 is characterized in that: the broadside of each lamp tube cover all has the variation of width alternating expression on width, thus the widest part that makes each lamp tube cover all have to be crisscross arranged and the narrowest place.
4. lamp tube cover group as claimed in claim 3 is characterized in that: the narrowest place of the broadside of corresponding another lamp tube cover of the widest part of the wherein broadside of a lamp tube cover in this two lamp tube cover.
5. lamp tube cover group as claimed in claim 1 is characterized in that: the width of the widest part of the broadside of this two lamp tube cover is identical, and the width at the narrowest place of the broadside of this two lamp tube cover is identical.
6. lamp tube cover group as claimed in claim 1 is characterized in that: the minor face shape of this two lamp tube cover is identical, and its corresponding broadside of this two minor faces difference is parallel.
7. lamp tube cover group as claimed in claim 3 is characterized in that: the broadside of each lamp tube cover has the edge of a undaform.
8. lamp tube cover group as claimed in claim 3 is characterized in that: the broadside of each lamp tube cover has the edge of a sawtooth pattern.
9. lamp tube cover group as claimed in claim 8 is characterized in that: this sawtooth pattern is trapezoidal sawtooth pattern.
10. lamp tube cover group as claimed in claim 8 is characterized in that: this sawtooth pattern is the triangle sawtooth pattern.
11. a module backlight includes: a backboard, at least onely be arranged at the lamp tube cover of this backboard one side, two lamp tube sockets that are arranged at the two ends of this lamp tube cover respectively, and two ends are inserted in the fluorescent tube in this two lamp tube socket; Wherein this lamp tube cover have a side and from the both sides of this side an extended broadside and a minor face, it is characterized in that: the broadside of this lamp tube cover has the edge of a undaform or sawtooth pattern.
12. module backlight as claimed in claim 11 is characterized in that: this backboard has a boss, at least one side of this boss has sawtooth pattern or undaform edge, with the sawtooth pattern of this lamp tube cover of seamless combination or the edge of undaform.
13. module backlight as claimed in claim 12 is characterized in that: at least one side of this boss has a depressed part, and in order to accommodate the broadside of this lamp tube cover, the inside surface of this boss is concordant with the inside surface of the broadside of the lamp tube cover of being accommodated.
14. module backlight as claimed in claim 12, it is characterized in that: this lamp tube cover is two, and each lamp tube cover all has a side and reaches from an extended in the same way broadside in the both sides of side and a minor face, the shape complementarity of the relative two edges of two broadsides of this two lamp tube cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100379338A CN101261398B (en) | 2007-03-08 | 2007-03-08 | Backlight module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100379338A CN101261398B (en) | 2007-03-08 | 2007-03-08 | Backlight module |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101261398A true CN101261398A (en) | 2008-09-10 |
| CN101261398B CN101261398B (en) | 2011-05-18 |
Family
ID=39961949
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007100379338A Expired - Fee Related CN101261398B (en) | 2007-03-08 | 2007-03-08 | Backlight module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101261398B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104470287A (en) * | 2014-08-13 | 2015-03-25 | 州巧科技股份有限公司 | Multi-piece display backplane |
| CN110578882A (en) * | 2018-06-08 | 2019-12-17 | 深圳市倍盛鸿照明有限公司 | Optical biological eye-protecting lamp |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ATE26436T1 (en) * | 1982-10-08 | 1987-04-15 | British Telecomm | CONNECTION OF FIBER OPTICS THROUGH FUSE JOINTS. |
| CN100426010C (en) * | 2002-12-02 | 2008-10-15 | 鸿富锦精密工业（深圳）有限公司 | Light conducting plate and backlight module using the same |
| CN2586984Y (en) * | 2002-12-05 | 2003-11-19 | 鸿富锦精密工业（深圳）有限公司 | Back light device |
-
2007
- 2007-03-08 CN CN2007100379338A patent/CN101261398B/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104470287A (en) * | 2014-08-13 | 2015-03-25 | 州巧科技股份有限公司 | Multi-piece display backplane |
| TWI550317B (en) * | 2014-08-13 | 2016-09-21 | 州巧科技股份有限公司 | A multi-piece backboard structure for display |
| CN104470287B (en) * | 2014-08-13 | 2018-06-19 | 州巧科技股份有限公司 | Multi-piece display backplane |
| CN110578882A (en) * | 2018-06-08 | 2019-12-17 | 深圳市倍盛鸿照明有限公司 | Optical biological eye-protecting lamp |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101261398B (en) | 2011-05-18 |
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Granted publication date: 20110518 Termination date: 20130308 |