CN201439912U - Direct-type backlight device - Google Patents
Direct-type backlight device Download PDFInfo
- Publication number
- CN201439912U CN201439912U CN200920172930XU CN200920172930U CN201439912U CN 201439912 U CN201439912 U CN 201439912U CN 200920172930X U CN200920172930X U CN 200920172930XU CN 200920172930 U CN200920172930 U CN 200920172930U CN 201439912 U CN201439912 U CN 201439912U
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- stiffener
- optical device
- fluorescent tube
- support
- downward back
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Abstract
The utility model relates to a direct-type backlight device, comprising a back plate, an optical component, a support member for fixing light tubes and a strengthening strip. The support member comprises a support strip vertical to the light tube and a support beam the top of which supports against the optical component; and the strengthening strip is vertical to the support strip to form a crossed integral base. In the utility model, the strengthening strip is arranged so that the support strip and the strengthening strip form the crossed integral base, thereby not only enlarging the support area of the support strip, improving the rigidity of the support strip, effectively reducing sloshing of the support beam caused by partial deformation of the back plate or the condition that the optical component is seriously supported, reducing the level of fragment at top of the support beam or abrasion on the surface of the optical component and avoiding defect of blackspots of the backlight source, but also overcoming the defect of obvious luminance in the light tube placing area by reflection and dispersion.
Description
Technical field
The utility model relates to a kind of Backlight For Liquid Crystal Display Panels, particularly a kind of downward back electro-optical device.
Background technology
At present, large scale (more than 20 inches) LCD adopts the downward back electro-optical device as backlight usually.Fig. 6 is the structural representation of prior art downward back electro-optical device.As shown in Figure 6, prior art direct-type backlight device main body structure comprises backboard 11, reflector plate 12, optical module 13, support member 14 and fluorescent tube 15, and reflector plate 12 is arranged on the bottom surface of backboard 11, is used for reflection ray; Optical module 13 is arranged on the upper end surface of backboard 11; Several support members are arranged between reflector plate 12 and the optical module 13, are used for fixing fluorescent tube 15.The critical piece of support member 14 comprises support bar 141, brace summer 142, fluorescent tube holder 143 and trip 144, support bar 141 is a strip structure, the lower end of brace summer 142 and support bar 141 are affixed, upper end and optical module 13 butts, be used to avoid the optical module of large scale back lighting device to be bent downwardly distortion because of gravity, cause the situation of brightness irregularities, several fluorescent tube holders 143 and trip 144 are fixed on the support bar 141, fluorescent tube holder 143 is used to provide the support in each fluorescent tube 15 centre position, and trip 144 is used for support bar 141 is fixed at backboard 11 and reflector plate 12.
Find in the practical application, because the backboard size of large scale liquid crystal display is big and easy deformation, the backboard local deformation drives the support bar distortion of strip structure, the support bar distortion causes that then rocking appears in brace summer or the optical module situation of excessively conflicting, cause the brace summer top chip to occur or wear trace appears in the optical module surface, these chips or wear trace show as the backlight stain on LCD picture bad.In addition, there are defective in the scattering and the catoptric arrangement of existing apparatus, initially light in several seconds at fluorescent tube, obviously shinny phenomenon of fluorescent tube put area can occur.
The utility model content
The purpose of this utility model provides a kind of downward back electro-optical device, effectively solves technological deficiencies such as the bad and fluorescent tube put area of backlight stain that existing apparatus exists is shinny.
To achieve these goals, the utility model provides a kind of downward back electro-optical device, the support member that comprises backboard, optical module and fixed lamp tube, described support member comprises vertical with the fluorescent tube support bar and the brace summer of top butt optical module, also comprises the vertical stiffener that is connected to form the right-angled intersection unsplit bedplate with described support bar.
The cross section of described stiffener is that semicircle, half elliptic or fillet are trapezoidal.
The width of described stiffener is 1mm～10mm.
On the technique scheme basis, described stiffener can be at the zone line between the adjacent fluorescent tube, and the center of stiffener cross section and fluorescent tube are centered close on the same horizontal plane.Described stiffener is the white plastic goods that are used for reflection ray.
Described stiffener also can be positioned at the below of fluorescent tube.Described stiffener is for being used for light-absorbing rubber.
On the technique scheme basis, the top of described brace summer also is provided with elastomer block.Described elastomer block is white silica gel, transparent silica gel or elastic rubber product, and thickness is 0.1mm～1.0mm.
The utility model proposes a kind of downward back electro-optical device, by stiffener is set, make support bar and stiffener constitute the unsplit bedplate of right-angled intersection, enlarged the Area of bearing of support bar on the one hand, improved the rigidity of support bar, effectively slowed down brace summer that the backboard local deformation the causes optical module situation of rocking or excessively conflict, slow down the brace summer top and the degree that wear trace appears in chip or optical module surface occurred, avoided the bad defective of backlight stain, also solved obviously shinny defective of existing apparatus fluorescent tube put area on the other hand by reflection and scattering.Further, elastomer block is set, can cushions the amplitude that the brace summer top moves up and down along with the backboard distortion, slow down the wearing and tearing of brace summer, also help avoiding the bad defective of backlight stain optical module by top at brace summer.
Description of drawings
Fig. 1 is the structural representation of the utility model downward back electro-optical device first embodiment;
Fig. 2 be among Fig. 1 A-A to cutaway view;
Fig. 3 is the structural representation of the utility model downward back electro-optical device second embodiment;
Fig. 4 and Fig. 5 are the structural representation of the utility model downward back electro-optical device the 3rd embodiment;
Fig. 6 is the structural representation of prior art downward back electro-optical device.
Description of reference numerals:
The 11-backboard; The 12-reflector plate; The 13-optical module;
The 14-support member; The 15-fluorescent tube; The 16-stiffener;
The 17-elastomer block; The 141-support bar; The 142-brace summer;
The holder of 143-fluorescent tube; The 144-trip.
The specific embodiment
Below by drawings and Examples, the technical solution of the utility model is described in further detail.
Fig. 1 is the structural representation of the utility model downward back electro-optical device first embodiment, Fig. 2 be among Fig. 1 A-A to cutaway view.As depicted in figs. 1 and 2, present embodiment downward back electro-optical device comprises backboard 11, reflector plate 12, optical module 13, support member 14, fluorescent tube 15 and stiffener 16, and reflector plate 12 is arranged on the bottom surface of backboard 11, is used for reflection ray; Optical module 13 is arranged on the upper end surface of backboard 11; Several support members 14 are arranged between reflector plate 12 and the optical module 13, be used for fixing fluorescent tube 15, the critical piece of each support member 14 comprises support bar 141, brace summer 142, fluorescent tube holder 143 and trip 144, support bar 141 is the strip structure vertical with fluorescent tube 15, the lower end of brace summer 142 and support bar 141 are affixed, upper end and optical module 13 butts, be used to avoid the optical module of large scale back lighting device to be bent downwardly distortion because of gravity, cause the situation of brightness irregularities, several fluorescent tube holders 143 and trip 144 are fixed on the support bar 141, fluorescent tube holder 143 is used to provide the support in each fluorescent tube 15 centre position, and trip 144 is used for support bar 141 is fixed at backboard 11 and reflector plate 12.Present embodiment stiffener 16 is the strip structure vertical with support bar 141, the zone line of stiffener 16 between adjacent fluorescent tube 15, and fixedly connected with several support bars 141, make support bar 141 and stiffener 16 constitute the unsplit bedplate of right-angled intersections.The right-angled intersection unsplit bedplate that support bar 141 and stiffener 16 are constituted not only can enlarge the Area of bearing of support bar 141, but also improved the rigidity of support bar 141, therefore effectively slowed down brace summer 142 that backboard 11 local deformations the cause optical module situation of rocking or excessively conflict, slow down the brace summer top and the degree that wear trace appears in chip or optical module surface occurred, avoided the bad defective of backlight stain.
Further, present embodiment stiffener 16 can also solve obviously shinny defective of existing apparatus fluorescent tube put area by reflection and scattering.Particularly, present embodiment stiffener 16 is made by white plastic that can reflection ray, cross section is shapes such as semicircle, half elliptic or fillet be trapezoidal, and the center of stiffener 16 cross sections is arranged to be centered close on the same horizontal plane with fluorescent tube 15, and the light of fluorescent tube 15 emissions is effectively reflected and scattering.When fluorescent tube 15 begins to launch light, present embodiment stiffener 16 can be by effectively reflection and scattering in time with light emission to the optical module in zone between the fluorescent tube, make backlight form Luminance Distribution more uniformly, thereby overcome obviously shinny defective of existing apparatus fluorescent tube put area.In the practical application, the longer the better for the setting of the total length of present embodiment stiffener 16, and as shown in Figure 1, stiffener 16 can extend to the bottom of U type fluorescent tube, and for the fluorescent tube of vertical bar formula, the length of stiffener 16 is more preferably greater than effective light-emitting zone length of fluorescent tube.The width of present embodiment stiffener 16 is arranged to 1mm～10mm, stiffener 16 both can be an overall structure, it also can be the branch body structure, integrally-built stiffener 16 can be fixedlyed connected with support member 14 by the groove or the projection that are provided with on the stiffener 16, divide the stiffener 16 of body structure to be arranged between adjacent two support members 14, and dock fixing with support member 14.Certainly, those skilled in the art can adopt multiple mode to realize fixedlying connected between stiffener 16 and the support member 14, repeat no more here.
Fig. 3 is the structural representation of the utility model downward back electro-optical device second embodiment.As shown in Figure 3, the agent structure of present embodiment and aforementioned first embodiment are basic identical, stiffener 16 is the strip structure vertical with support bar 141, and fixedly connected with several support bars 141, different is, present embodiment stiffener 16 is arranged on the below of fluorescent tube 15, is used to absorb the light of fluorescent tube 15 belows, reduces the brightness of fluorescent tube 15 regions.Present embodiment stiffener 16 is by can light-absorbingly making than the dark colour elastomeric material, and cross section is shapes such as semicircle, half elliptic or fillet be trapezoidal.Equally, because the right-angled intersection unsplit bedplate that support bar 141 and stiffener 16 are constituted not only can enlarge the Area of bearing of support bar 141, but also improved the rigidity of support bar 141, therefore effectively slowed down brace summer 142 that backboard 11 local deformations the cause optical module situation of rocking or excessively conflict, slow down the brace summer top and the degree that wear trace appears in chip or optical module surface occurred, avoided the bad defective of backlight stain.Simultaneously, because stiffener 16 is arranged on the below of fluorescent tube 15 regions, when fluorescent tube 15 begins to launch light, present embodiment stiffener 16 can be by absorbing the light of fluorescent tube 15 belows, reduce the brightness of fluorescent tube 15 put areas, make backlight form Luminance Distribution more uniformly, thereby overcome obviously shinny defective of existing apparatus fluorescent tube put area.In the practical application, present embodiment stiffener 16 is separately positioned between adjacent two support members 14 for dividing body structure, and docks fixing with support member 14.
Fig. 4 and Fig. 5 are the structural representation of the utility model downward back electro-optical device the 3rd embodiment.As shown in Figure 4 and Figure 5, present embodiment is the scheme expansion of aforementioned two embodiment, on aforementioned two embodiment technical scheme bases, the top of present embodiment brace summer 142 also is provided with elastomer block 17, the top that makes brace summer 142 is by elastomer block 17 butt optical modules 13, the amplitude that buffering brace summer 142 tops move up and down along with backboard 11 distortion, and the wearing and tearing that slow down 142 pairs of optical modules 13 of brace summer also help avoiding the bad defective of backlight stain.In the practical application, it is white silica gel, transparent silica gel or the elastic rubber product of 0.1mm～1.0mm that elastomer block can adopt thickness, can adopt surface applied or sticking method of applying to be fixed on the top of brace summer.Under the present embodiment mentality of designing, can also realize slowing down the purpose that optical module is worn and torn by changing support beam structure.For example, can adopt the brace summer with 5%～10% hollow-core construction, the diameter of hollow-core construction is a micron level.
It should be noted that at last: above embodiment is only unrestricted in order to the explanation the technical solution of the utility model, although the utility model is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement the technical solution of the utility model, and not break away from the spirit and scope of technical solutions of the utility model.
Claims (9)
1. downward back electro-optical device, the support member that comprises backboard, optical module and fixed lamp tube, described support member comprises vertical with the fluorescent tube support bar and the brace summer of top butt optical module, it is characterized in that, also comprise the vertical stiffener that is connected to form the right-angled intersection unsplit bedplate with described support bar.
2. downward back electro-optical device according to claim 1 is characterized in that, the cross section of described stiffener is that semicircle, half elliptic or fillet are trapezoidal.
3. downward back electro-optical device according to claim 1 is characterized in that, the width of described stiffener is 1mm～10mm.
4. according to the described downward back electro-optical device of arbitrary claim in the claim 1～3, it is characterized in that, the zone line of described stiffener between adjacent fluorescent tube, the center of stiffener cross section and fluorescent tube are centered close on the same horizontal plane.
5. downward back electro-optical device according to claim 4 is characterized in that, described stiffener is the white plastic goods that are used for reflection ray.
6. according to the described downward back electro-optical device of arbitrary claim in the claim 1～3, it is characterized in that described stiffener is positioned at the below of fluorescent tube.
7. downward back electro-optical device according to claim 6 is characterized in that, described stiffener is for being used for light-absorbing rubber.
8. according to the described downward back electro-optical device of arbitrary claim in the claim 1～3, it is characterized in that the top of described brace summer also is provided with elastomer block.
9. downward back electro-optical device according to claim 8 is characterized in that, described elastomer block is white silica gel, transparent silica gel or elastic rubber product, and thickness is 0.1mm～1.0mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920172930XU CN201439912U (en) | 2009-08-14 | 2009-08-14 | Direct-type backlight device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920172930XU CN201439912U (en) | 2009-08-14 | 2009-08-14 | Direct-type backlight device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201439912U true CN201439912U (en) | 2010-04-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920172930XU Expired - Lifetime CN201439912U (en) | 2009-08-14 | 2009-08-14 | Direct-type backlight device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201439912U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103453390A (en) * | 2012-06-04 | 2013-12-18 | Tcl光电科技(惠州)有限公司 | LCD TV (Liquid Crystal Display Television), backlight module and manufacturing method thereof |
| WO2016037431A1 (en) * | 2014-09-11 | 2016-03-17 | 深圳Tcl新技术有限公司 | Diffusion plate supporting piece and backlight module |
| CN109164631A (en) * | 2017-11-27 | 2019-01-08 | 苏州乐轩科技有限公司 | Direct type backlight module, display device and assembling method thereof |
| CN109828400A (en) * | 2019-03-27 | 2019-05-31 | 深圳创维－Rgb电子有限公司 | Directly lower liquid crystal module and liquid crystal display device |
| CN112823308A (en) * | 2018-10-05 | 2021-05-18 | 微软技术许可有限责任公司 | Optically aligned backlight unit internal support |
-
2009
- 2009-08-14 CN CN200920172930XU patent/CN201439912U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103453390A (en) * | 2012-06-04 | 2013-12-18 | Tcl光电科技(惠州)有限公司 | LCD TV (Liquid Crystal Display Television), backlight module and manufacturing method thereof |
| WO2016037431A1 (en) * | 2014-09-11 | 2016-03-17 | 深圳Tcl新技术有限公司 | Diffusion plate supporting piece and backlight module |
| CN109164631A (en) * | 2017-11-27 | 2019-01-08 | 苏州乐轩科技有限公司 | Direct type backlight module, display device and assembling method thereof |
| CN109164631B (en) * | 2017-11-27 | 2021-11-16 | 苏州乐轩科技有限公司 | Direct type backlight module, display device and assembling method thereof |
| CN112823308A (en) * | 2018-10-05 | 2021-05-18 | 微软技术许可有限责任公司 | Optically aligned backlight unit internal support |
| CN109828400A (en) * | 2019-03-27 | 2019-05-31 | 深圳创维－Rgb电子有限公司 | Directly lower liquid crystal module and liquid crystal display device |
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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: JINGDONGFANG SCIENCE AND TECHNOLOGY GROUP CO., LTD Free format text: FORMER OWNER: BEIJING BOE PHOTOELECTRICITY SCIENCE + TECHNOLOGY CO., LTD. Effective date: 20150617 Owner name: BEIJING BOE PHOTOELECTRICITY SCIENCE + TECHNOLOGY Effective date: 20150617 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20150617 Address after: 100015 Jiuxianqiao Road, Beijing, No. 10, No. Patentee after: BOE Technology Group Co., Ltd. Patentee after: Beijing BOE Photoelectricity Science & Technology Co., Ltd. Address before: 100176 Beijing economic and Technological Development Zone, West Central Road, No. 8 Patentee before: Beijing BOE Photoelectricity Science & Technology Co., Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20100421 |
|
| CX01 | Expiry of patent term |