CN103032771B - A kind of direct-light-type backlight and display device - Google Patents
A kind of direct-light-type backlight and display device Download PDFInfo
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- CN103032771B CN103032771B CN201210568347.7A CN201210568347A CN103032771B CN 103032771 B CN103032771 B CN 103032771B CN 201210568347 A CN201210568347 A CN 201210568347A CN 103032771 B CN103032771 B CN 103032771B
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Abstract
The present invention relates to technical field of liquid crystal display, disclose a kind of straight lower backlight and display device, a kind of direct-light-type backlight, including: backboard, also include: be fixedly installed on the multiple light tube group above backboard, each light tube group includes at least one fluorescent tube, and lay respectively at two connection terminals of at least one lamp tube ends described, wherein, each fluorescent tube includes: lampshade, it is arranged on the printed circuit pedestal of each end of lampshade, and is correspondingly arranged in the LED on each printed circuit pedestal; Described each connection terminal is connected with the printed circuit pedestal of respective side by wire rod. The present invention has the beneficial effect that: by adopting LED lamp tube as light source, greatly reduce backlight pollution on the environment.
Description
Technical field
The present invention relates to technical field of liquid crystal display, be related specifically to a kind of direct-light-type backlight and display device.
Background technology
Backlight is the most important equipment determining display device image quality in display device except panel, and its radiation response directly determines the display image quality of display device. along with people appreciate improving constantly of requirement, people are also more and more higher to the requirement of display device picture, in order to meet the needs of client, display device producer constantly improves the effect of backlight, and develop various light sources, as: EL(ElectroLuminescence, electroluminescent, it is called for short EL), CCFL(ColdCathodeFluorescentLamp, cathode fluorescent tube, it is called for short CCFL), HCFL(HotCathodeFluorescentLamp, thermal cathode fluorescent tube, it is called for short HCFL) etc., in these light sources, the operation principle of cathode fluorescent tube is be added in the electrode of lamp tube ends by high voltage after, in fluorescent tube, minority electrons high-speed impact electrode produces secondary, start electric discharge, hydrargyrum in pipe or noble gas are by after electronic impact, exciting radiation goes out the ultraviolet light of 253.7nm, the ultraviolet excitation produced is coated in the fluorescent material on inside pipe wall and produces visible ray, the light ratio irradiated due to cathode fluorescent tube is more uniform, and there is good light efficiency, therefore, in a display device, cathode fluorescent tube obtains relatively broad application.
Prior art has the disadvantage that, owing to the cathode fluorescent tube of backlight is contained within mercury vapour, therefore, very easily to environment.
Summary of the invention
The present invention provides a kind of direct-light-type backlight and display device, in order to reduce the direct-light-type backlight pollution to environment.
The present invention includes:
A kind of direct-light-type backlight, including: backboard, also include:
Being fixedly installed on the multiple light tube group above backboard, each light tube group includes at least one fluorescent tube, and two that lay respectively at least one lamp tube ends described connect terminal, wherein,
Each fluorescent tube includes: lampshade, is arranged on the printed circuit pedestal of each end of lampshade, and is correspondingly arranged in the LED on each printed circuit pedestal;
Described each connection terminal is connected with the printed circuit pedestal of respective side by wire rod.
Preferably, described printed circuit pedestal passes through sealant sealing on described lampshade.
Preferably, described printed circuit pedestal is aluminum-base printing circuit pedestal.
Preferably, described lampshade is fluorescent lamp shade.
Preferably, the inwall of described lampshade has diffusibility granule.
Preferably, described lampshade is cylindrical in shape.
Preferably, direct-light-type backlight provided by the invention also includes: be arranged at the bumper of each light tube group end, and described bumper is sleeved on wire rod and wraps the end of fluorescent tube.
Preferably, the bottom of described bumper has projection, the light tube group placed side of described backboard is provided with multiple groove, and the two ends of each groove are respectively provided with through hole, described each light tube group is individually positioned in its groove tackled, and the projection of bumper is installed in described through hole, described connection terminal is through the through hole one side that to be positioned on backboard relative with light tube group placed side.
A kind of display device, has any one direct-light-type backlight above-mentioned.
The present invention has the beneficial effect that: by adopting LED lamp tube as light source, greatly reduce backlight pollution on the environment.
Accompanying drawing explanation
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.
Accompanying drawing explanation
10-backboard 20-light tube group 21-lampshade
22-printed circuit pedestal 23-LED lamp 24-wire rod
It is protruding that 25-connects terminal 26-bumper 27-
Detailed description of the invention
To environment during in order to avoid use backlight and display device, embodiments provide a kind of direct-light-type backlight and display device. In the inventive solutions, adopt LED lamp tube as light source, make backlight avoid use cold cathode fluorescent tube, reduce the pollution on the environment when using backlight. For making the object, technical solutions and advantages of the present invention clearly, by the following examples the present invention is described in further detail.
As shown in Figure 1, Figure 2, shown in Fig. 4 and Fig. 5, with the placement direction of the direct-light-type backlight of one embodiment of the invention shown in Fig. 1 for 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, including: backboard 10, also include: be fixedly installed on the multiple light tube group 20 above backboard 10, each light tube group 20 includes at least one fluorescent tube, and two connection terminals 25 of at least one lamp tube ends described in laying respectively at, wherein, each fluorescent tube includes: lampshade 21, it is arranged on the printed circuit pedestal 22 of each end of lampshade 21, and is correspondingly arranged in the LED 23 on each printed circuit pedestal 22; Described each connection terminal 25 is connected with the printed circuit pedestal 22 of respective side by wire rod 24.
In this embodiment, the light tube group 20 being made up of lampshade 21, LED 23, printed circuit pedestal 22 and connection terminal 25 is fixed on backboard 10, owing to adopting the light tube group 20 being made up of LED 23 as light source, therefore use cathode fluorescent tube is avoided, thus reducing pollution on the environment during use backlight;LED 23 adopts high-powered LED lamp 23 simultaneously, and luminous efficiency is high, and therefore, light tube group 20 has good light efficiency, additionally, due to LED 23 is long for service life, therefore, light tube group 20 has longer service life.
As shown in Figures 4 and 5, in this embodiment, it is preferred that described printed circuit pedestal 22 passes through sealant sealing on described lampshade 21. Being sealed on lampshade 21 by fluid sealant by printed circuit pedestal 22, it is possible to effectively prevent lampshade 21 light leak, the impurity being simultaneously also prevented from the external world enters into lampshade 21 inside, thus having influence on the dispersion effect of the light that LED 23 irradiates.
With continued reference to Fig. 4 and Fig. 5, in this embodiment, it is preferred that described printed circuit pedestal 22 is aluminum-base printing circuit pedestal. Aluminum-base printing circuit pedestal has higher intensity, it is possible to well supporting LED 23, aluminum-base printing circuit pedestal also has good thermal diffusivity simultaneously, it is possible to quickly distributed by the heat that LED 23 produces.
In this embodiment, the lampshade that lampshade 21 can make for multiple material, such as the milky lampshade of makrolon material making, fluorescent lamp shade etc. Preferably, lampshade 21 is fluorescent lamp shade, lampshade 21 is cylindrical in shape, fluorescent material on fluorescent lamp shade can make the light that LED 23 irradiates have preferably light efficiency, simultaneously because fluorescent lamp shade adopts transparent polycarbonate material to be made, therefore fluorescent lamp shade has good intensity and longer service life, it is to avoid cause light tube group 20 to lose effect owing to lampshade 21 damages.
In this embodiment, it is preferred that on the inwall of lampshade 21, have diffusibility granule, being coated on the diffusibility granule on lampshade 21 inwall can scatter out at different angles by the light that LED 23 irradiates, and makes the light that light tube group 20 irradiates more uniform. Described diffusibility granule can be the multiple particle with diffusion, such as acrylic particle.
As shown in Figure 6 and Figure 7, in this embodiment, it is preferred that direct-light-type backlight provided by the invention also includes: being arranged at the bumper 26 of each light tube group 20 end, described bumper 26 is sleeved on wire rod 24 and wraps the end of fluorescent tube. The bumper 26 being enclosed within light tube group 20 two ends can well protect light tube group 20; prevent when light tube group 20 is arranged on backboard 10 owing to operator exerts oneself excessive and clashing and breaking light tube group 20; wire rod 24 and connection terminal 25 can also be played certain supporting role by bumper 26 simultaneously; avoid operator when connecting terminal 25 due to firmly excessive and make the junction of wire rod 24 and printed circuit pedestal 22 disconnect, light tube group 20 is caused damage. Additionally, due to bumper 26 has wrapped the end of light tube group 20, wrap by the junction of lampshade 21 with printed circuit pedestal 22, reduce further the dust in the external world and enter that lampshade 21 is internal and the probability of lampshade 21 light leak.
With reference to shown in Fig. 1, Fig. 2 and Fig. 3, the front view of the Fig. 1 direct-light-type backlight for providing for one embodiment of the invention, Fig. 2 is the top view of Fig. 1, and Fig. 3 is the upward view of Fig. 1. Preferably, the bottom of described bumper 26 has protruding 27, light tube group 20 placed side of described backboard 10 is provided with multiple groove (not identifying in figure), and the two ends of each groove are respectively provided with through hole, described each light tube group 20 is individually positioned in its groove tackled, and the projection 27 of bumper 26 is installed in described through hole, described connection terminal 25 is through the through hole one side that to be positioned on backboard 10 relative with light tube group 20 placed side.In this embodiment, light tube group 20 is placed in the groove being arranged on backboard 10, and the projection 27 of bumper 26 is installed in the through hole of described groove, make light tube group 20 fix. It is made owing to bumper 26 adopts plastic cement etc. to have elastic material; therefore light tube group 20 can be played a very good protection by bumper 26 while fixed lamp tube group 20; compared to adopting the rigid connection modes such as fixed cover; bumper 26 is when light tube group 20 is subject to External Force Acting; by the cushioning effect of bumper 26, a part of external force can be laid down, it is prevented that hard collision occurs in light tube group 20. It is simultaneously connected with terminal 25 in the through hole one side that to be positioned on backboard 10 relative with light tube group 20 placed side, makes connection terminal 25 not affect the light that light tube group 20 irradiates.
One display device of the present invention, including the direct-light-type backlight described in aforementioned any embodiment, has preferably picture display effect, avoids the pollution on the environment due to use cathode fluorescent tube simultaneously.
Obviously, the present invention can be carried out various change and modification without deviating from the spirit and scope of the present invention by those skilled in the art. So, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.
Claims (7)
1. a direct-light-type backlight, including: backboard, it is characterised in that also include:
Being fixedly installed on the multiple light tube group above backboard, each light tube group includes at least one fluorescent tube, and two that lay respectively at least one lamp tube ends described connect terminal, wherein,
Each fluorescent tube includes: lampshade, is arranged on the printed circuit pedestal of each end of lampshade, and is correspondingly arranged in the LED on each printed circuit pedestal;
Described each connection terminal is connected with the printed circuit pedestal of respective side by wire rod;
Also include: be arranged at the bumper of each light tube group end, described bumper is sleeved on wire rod and wraps the end of fluorescent tube, the bottom of described bumper has projection, the light tube group placed side of described backboard is provided with multiple groove, and the two ends of each groove are respectively provided with through hole, described each light tube group is individually positioned in its groove tackled, and the projection of bumper is installed in described through hole, and described connection terminal is through the through hole one side that to be positioned on backboard relative with light tube group placed side.
2. direct-light-type backlight as claimed in claim 1, it is characterised in that described printed circuit pedestal passes through sealant sealing on described lampshade.
3. direct-light-type backlight as claimed in claim 2, it is characterised in that described printed circuit pedestal is aluminum-base printing circuit pedestal.
4. direct-light-type backlight as claimed in claim 1, it is characterised in that described lampshade is fluorescent lamp shade.
5. direct-light-type backlight as claimed in claim 4, it is characterised in that there is on the inwall of described lampshade diffusibility granule.
6. the direct-light-type backlight as described in any one of Claims 1 to 5, it is characterised in that described lampshade is cylindrical in shape.
7. a display device, it is characterised in that include the direct-light-type backlight as described in any one of claim 1～6.
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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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| Application Number | Priority Date | Filing Date | Title |
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| 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 CN103032771A (en) | 2013-04-10 |
| CN103032771B true CN103032771B (en) | 2016-06-15 |
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Citations (4)
| 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 |
| 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 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5072875B2 (en) * | 2009-02-04 | 2012-11-14 | 株式会社ジャパンディスプレイセントラル | Backlight unit and liquid crystal display device using the same |
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- 2012-12-24 CN CN201210568347.7A patent/CN103032771B/en active Active
Patent Citations (4)
| 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 |
| 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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| CN103032771A (en) | 2013-04-10 |
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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. |