CN103032771A - Vertical backlight source and display device - Google Patents
Vertical backlight source and display device Download PDFInfo
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- CN103032771A CN103032771A CN2012105683477A CN201210568347A CN103032771A CN 103032771 A CN103032771 A CN 103032771A CN 2012105683477 A CN2012105683477 A CN 2012105683477A CN 201210568347 A CN201210568347 A CN 201210568347A CN 103032771 A CN103032771 A CN 103032771A
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- light
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- lampshade
- type backlight
- tube group
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Abstract
The invention relates to the technical field of liquid crystal display and discloses a vertical backlight source and a display device. The vertical backlight source comprises a back plate and a plurality of lamp tube groups arranged above the back plate; wherein each lamp tube group comprises at least one lamp tube and two connecting terminals respectively positioned at the two ends of the at least one lamp tube; each lamp tube comprises a lampshade, printing circuit bases and an LED (Light Emitting Diode) lamp, wherein the printing circuit bases are arranged on each end part of the lampshade, the LED lamp is correspondingly arranged on each printing circuit base; and each connecting terminal is connected with the printing circuit base on the corresponding side through a wire. The vertical backlight source and the display device have the following beneficial effect that the pollution of the backlight source to the environment is greatly reduced because the LED lamp tube serves as the light source.
Description
Technical field
The present invention relates to technical field of liquid crystal display, specially refer to a kind of direct-light-type backlight and display unit.
Background technology
Backlight is the most important equipment that determines the display unit image quality in the display unit except panel, and its radiation response has directly determined the display frame quality of display unit.Along with people appreciate improving constantly of requirement, people are also more and more higher to the requirement of display unit picture, in order to satisfy client's needs, display unit producer constantly improves the effect of backlight, and develop various light sources, as: EL(ElectroLuminescence, electroluminescent, be called for short EL), CCFL(Cold Cathode FluorescentLamp, cathode fluorescent tube, be called for short CCFL), HCFL(Hot Cathode Fluorescent Lamp, thermal cathode fluorescent tube, be called for short HCFL) etc., in these light sources, the operation principle of cathode fluorescent tube is for after being added in the electrode of lamp tube ends by high voltage, minority electrons high-speed impact electrode produces secondary in the fluorescent tube, begin discharge, after mercury in the pipe or inert gas are subjected to electronic impact, exciting radiation goes out the ultraviolet light of 253.7nm, and the ultraviolet excitation of generation is coated in the fluorescent material on the inside pipe wall and produces visible light, because the light that cathode fluorescent tube irradiates is more even, and has good light efficiency, therefore, in display unit, cathode fluorescent tube obtains using comparatively widely.
The defective of prior art is, because the cathode fluorescent tube of backlight contains mercury vapour, therefore, very easily to environment.
Summary of the invention
The invention provides a kind of direct-light-type backlight and display unit, in order to reduce direct-light-type backlight to the pollution of environment.
The present invention includes:
A kind of direct-light-type backlight comprises: backboard also comprises:
Be fixedly installed on a plurality of light tube group of backboard top, each light tube group comprises at least one fluorescent tube, and two splicing ears that lay respectively at described at least one lamp tube ends, wherein,
Each fluorescent tube comprises: lampshade, be arranged on the printed circuit pedestal of each end of lampshade, and the corresponding LED lamp that is arranged on each printed circuit pedestal;
Described each splicing ear is connected with the printed circuit pedestal of respective side by wire rod.
Preferably, described printed circuit pedestal by sealant sealing on described lampshade.
Preferably, described printed circuit pedestal is the aluminum-base printing circuit pedestal.
Preferably, described lampshade is fluorescent lamp shade.
Preferably, has the diffusivity particle on the inwall of described lampshade.
Preferably, described lampshade is tubular.
Preferably, direct-light-type backlight provided by the invention also comprises: be arranged at the bumper of each light tube group end, described bumper is sleeved on the wire rod and wraps the end of fluorescent tube.
Preferably, the bottom of described bumper has projection, be provided with a plurality of grooves on the light tube group placed side of described backboard, and the two ends of each groove all have through hole, described each light tube group is placed on respectively in its groove of tackling, and the projection of bumper is installed in the described through hole, and described splicing ear passes through hole and is positioned on the backboard relative one side with the light tube group placed side.
A kind of display unit has above-mentioned any one direct-light-type backlight.
Beneficial effect of the present invention is as follows: by adopting the LED fluorescent tube as light source, greatly reduced the backlight pollution on the environment.
Description of drawings
Fig. 1 is the front view of direct-light-type backlight one embodiment of the present invention;
Fig. 2 is the top view of Fig. 1;
Fig. 3 is the upward view of Fig. 1;
Fig. 4 is the front view of the light tube group of direct-light-type backlight of the present invention;
Fig. 5 is the top view of Fig. 4;
Fig. 6 is the partial sectional view after the light tube group of direct-light-type backlight of the present invention installs bumper additional;
Fig. 7 is the partial sectional view after the light tube group of direct-light-type backlight of the present invention installs bumper additional.
Description of drawings
10-backboard 20-light tube group 21-lampshade
22-printed circuit pedestal 23-LED lamp 24-wire rod
25-splicing ear 26-bumper 27-projection
The specific embodiment
To environment, the embodiment of the invention provides a kind of direct-light-type backlight and display unit during for fear of use backlight and display unit.In technical scheme of the present invention, adopt the LED fluorescent tube as light source, make backlight avoid the use cold cathode fluorescent tube, reduced pollution on the environment when using backlight.For making the purpose, technical solutions and advantages of the present invention clearer, by the following examples the present invention is described in further detail.
Such as Fig. 1, Fig. 2, Fig. 4 and shown in Figure 5, take the placement direction of the direct-light-type backlight of one embodiment of the invention shown in Fig. 1 as reference direction.The front view of the direct-light-type backlight that Fig. 1 provides for one embodiment of the invention, Fig. 2 is the top view of Fig. 1, and Fig. 4 is the front view of the light tube group of direct-light-type backlight of the present invention, and Fig. 5 is the side view of the light tube group of direct-light-type backlight of the present invention.
A kind of direct-light-type backlight that one embodiment of the invention provides, comprise: backboard 10, also comprise: a plurality of light tube group 20 that are fixedly installed on backboard 10 tops, each light tube group 20 comprises at least one fluorescent tube, and two splicing ears 25 that lay respectively at described at least one lamp tube ends, wherein, each fluorescent tube comprises: lampshade 21, be arranged on the printed circuit pedestal 22 of lampshade 21 each end, and the corresponding LED lamp 23 that is arranged on each printed circuit pedestal 22; Described each splicing ear 25 is connected with the printed circuit pedestal 22 of respective side by wire rod 24.
In this embodiment, to be fixed on by the light tube group 20 that lampshade 21, LED lamp 23, printed circuit pedestal 22 and splicing ear 25 form on the backboard 10, owing to adopt the light tube group 20 that is formed by LED lamp 23 as light source, therefore avoided the use cathode fluorescent tube, thus pollution on the environment when having reduced the use backlight; LED lamp 23 adopts high-powered LED lamp 23 simultaneously, and luminous efficiency is high, and therefore, light tube group 20 has good light efficiency, and in addition, because the LED lamp is long 23 service lifes, therefore, light tube group 20 has long service life.
Such as Fig. 4 and shown in Figure 5, preferred in this embodiment, described printed circuit pedestal 22 by sealant sealing on described lampshade 21.By fluid sealant printed circuit pedestal 22 is sealed on the lampshade 21, can effectively prevents lampshade 21 light leaks, can also prevent that simultaneously extraneous impurity from entering into lampshade 21 inside, thereby have influence on the dispersion effect of the light that LED lamp 23 irradiates.
Continuation is with reference to figure 4 and Fig. 5, and in this embodiment, preferred, described printed circuit pedestal 22 is the aluminum-base printing circuit pedestal.The aluminum-base printing circuit pedestal has higher intensity, can be good at supporting LED lamp 23, and the aluminum-base printing circuit pedestal also has good thermal diffusivity simultaneously, and the dissipation of heat that can fast LED lamp 23 be produced is gone out.
In this embodiment, lampshade 21 can be the lampshade that multiple material is made, the milky lampshade of making such as makrolon material, fluorescent lamp shade etc.Preferably, lampshade 21 is fluorescent lamp shade, lampshade 21 is tubular, the light that fluorescent material on the fluorescent lamp shade can make LED lamp 23 irradiate has better light efficiency, simultaneously because fluorescent lamp shade adopts transparent polycarbonate material to be made, therefore fluorescent lamp shade has good intensity, and long service life, has avoided causing light tube group 20 to lose effect owing to lampshade 21 damages.
In this embodiment, preferred, have the diffusivity particle on the inwall of lampshade 21, be coated on the light that the diffusivity particle on lampshade 21 inwalls can irradiate LED lamp 23 and go out with different scattered through angles, the light that light tube group 20 is irradiated is more even.Described diffusivity particle can be for multiple particle with diffusion, such as the acrylic particle.
As shown in Figure 6 and Figure 7, in this embodiment, preferred, direct-light-type backlight provided by the invention also comprises: be arranged at the bumper 26 of each light tube group 20 end, described bumper 26 is sleeved on the wire rod 24 and wraps the end of fluorescent tube.The bumper 26 that is enclosed within light tube group 20 two ends can well be protected light tube group 20; prevent when being installed in light tube group 20 on the backboard 10 because the operator exerts oneself excessive and clashing and breaking light tube group 20; bumper 26 can also play certain supporting role to wire rod 24 and splicing ear 25 simultaneously; avoided the operator when connecting splicing ear 25 because the excessive junction disconnection that makes wire rod 24 and printed circuit pedestal 22 of exerting oneself causes damage to light tube group 20.In addition, because bumper 26 has wrapped the end of light tube group 20, the junction that is about to lampshade 21 and printed circuit pedestal 22 wraps, and has further reduced the probability that extraneous dust enters lampshade 21 inside and lampshade 21 light leaks.
With reference to figure 1, Fig. 2 and shown in Figure 3, the front view of the direct-light-type backlight that provides for one embodiment of the invention is provided Fig. 1, and Fig. 2 is the top view of Fig. 1, and Fig. 3 is the upward view of Fig. 1.As preferred version, the bottom of described bumper 26 has projection 27, be provided with a plurality of grooves (not identifying among the figure) on light tube group 20 placed sides of described backboard 10, and the two ends of each groove all have through hole, described each light tube group 20 is placed on respectively in its groove of tackling, and the projection 27 of bumper 26 is installed in the described through hole, and described splicing ear 25 passes through hole and is positioned on the backboard 10 relative one side with light tube group 20 placed sides.In this embodiment, light tube group 20 is placed in the groove that is arranged on the backboard 10, and the projection 27 of bumper 26 is installed in the through hole of described groove, make light tube group 20 fixing.Because bumper 26 employing plastic cement etc. have flexible material and are made; therefore bumper 26 can play a very good protection to light tube group 20 in fixed lamp tube group 20; than rigid connection modes such as employing fixed covers; when bumper 26 is subject to External Force Acting in light tube group 20; can a part of external force be laid down by the cushioning effect of bumper 26, prevent that hard collision from appearring in light tube group 20.While splicing ear 25 passes through hole and is positioned on the one side relative with light tube group 20 placed sides on the backboard 10, makes splicing ear 25 not affect the light that light tube group 20 irradiates.
A kind of display unit of the present invention comprises the described direct-light-type backlight of aforementioned arbitrary embodiment, has better picture display effect, has avoided simultaneously the pollution on the environment owing to use cathode fluorescent tube.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (9)
1. direct-light-type backlight comprises: backboard, it is characterized in that, and also comprise:
Be fixedly installed on a plurality of light tube group of backboard top, each light tube group comprises at least one fluorescent tube, and two splicing ears that lay respectively at described at least one lamp tube ends, wherein,
Each fluorescent tube comprises: lampshade, be arranged on the printed circuit pedestal of each end of lampshade, and the corresponding LED lamp that is arranged on each printed circuit pedestal;
Described each splicing ear is connected with the printed circuit pedestal of respective side by wire rod.
2. direct-light-type backlight as claimed in claim 1 is characterized in that, described printed circuit pedestal by sealant sealing on described lampshade.
3. direct-light-type backlight as claimed in claim 2 is characterized in that, described printed circuit pedestal is the aluminum-base printing circuit pedestal.
4. direct-light-type backlight as claimed in claim 1 is characterized in that, described lampshade is fluorescent lamp shade.
5. direct-light-type backlight as claimed in claim 4 is characterized in that, has the diffusivity particle on the inwall of described lampshade.
6. such as each described direct-light-type backlight of claim 1 ~ 5, it is characterized in that described lampshade is tubular.
7. such as each described direct-light-type backlight of claim 1 ~ 5, it is characterized in that, also comprise: be arranged at the bumper of each light tube group end, described bumper is sleeved on the wire rod and wraps the end of fluorescent tube.
8. direct-light-type backlight as claimed in claim 7, it is characterized in that, the bottom of described bumper has projection, be provided with a plurality of grooves on the light tube group placed side of described backboard, and the two ends of each groove all have through hole, described each light tube group is placed on respectively in its groove of tackling, and the projection of bumper is installed in the described through hole, and described splicing ear passes through hole and is positioned on the backboard relative one side with the light tube group placed side.
9. a display unit is characterized in that, comprises such as each described direct-light-type backlight of claim 1 ~ 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210568347.7A CN103032771B (en) | 2012-12-24 | 2012-12-24 | A kind of direct-light-type backlight and display device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210568347.7A CN103032771B (en) | 2012-12-24 | 2012-12-24 | A kind of direct-light-type backlight and display device |
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| CN103032771A true CN103032771A (en) | 2013-04-10 |
| CN103032771B CN103032771B (en) | 2016-06-15 |
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| CN201210568347.7A Active CN103032771B (en) | 2012-12-24 | 2012-12-24 | A kind of direct-light-type backlight and display device |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201407530Y (en) * | 2009-05-22 | 2010-02-17 | 文强 | LED lamp tube |
| CN201475683U (en) * | 2009-07-31 | 2010-05-19 | 深圳格林照明技术有限公司 | Anti-glaring high-brightness LED fluorescent lamp |
| CN201547615U (en) * | 2009-12-03 | 2010-08-11 | 冠捷投资有限公司 | Direct backlight module |
| JP2010182510A (en) * | 2009-02-04 | 2010-08-19 | Toshiba Mobile Display Co Ltd | Backlight unit, and liquid crystal display device using the same |
| CN102661581A (en) * | 2012-05-30 | 2012-09-12 | 深圳市华星光电技术有限公司 | Connecting wire structures of direct-down-type lamp bars and connecting method thereof |
-
2012
- 2012-12-24 CN CN201210568347.7A patent/CN103032771B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010182510A (en) * | 2009-02-04 | 2010-08-19 | Toshiba Mobile Display Co Ltd | Backlight unit, and liquid crystal display device using the same |
| CN201407530Y (en) * | 2009-05-22 | 2010-02-17 | 文强 | LED lamp tube |
| CN201475683U (en) * | 2009-07-31 | 2010-05-19 | 深圳格林照明技术有限公司 | Anti-glaring high-brightness LED fluorescent lamp |
| CN201547615U (en) * | 2009-12-03 | 2010-08-11 | 冠捷投资有限公司 | Direct backlight module |
| CN102661581A (en) * | 2012-05-30 | 2012-09-12 | 深圳市华星光电技术有限公司 | Connecting wire structures of direct-down-type lamp bars and connecting method thereof |
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| Publication number | Publication date |
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| CN103032771B (en) | 2016-06-15 |
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Effective date of registration: 20180411 Address after: 100015 Jiuxianqiao Road, Beijing, No. 10, No. Patentee after: BOE Technology Group Co., Ltd. Address before: 100015 Jiuxianqiao Road, Beijing, No. 10, No. Co-patentee before: Xiamen BOE Co., Ltd. Patentee before: BOE Technology Group Co., Ltd. |