CN202708858U - Direct-type backlight source and display device - Google Patents
Direct-type backlight source and display device Download PDFInfo
- Publication number
- CN202708858U CN202708858U CN2012203646869U CN201220364686U CN202708858U CN 202708858 U CN202708858 U CN 202708858U CN 2012203646869 U CN2012203646869 U CN 2012203646869U CN 201220364686 U CN201220364686 U CN 201220364686U CN 202708858 U CN202708858 U CN 202708858U
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- light
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- type backlight
- backboard
- secondary prism
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- 238000012856 packing Methods 0.000 claims 1
- 239000012788 optical film Substances 0.000 abstract 3
- 239000010408 film Substances 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 9
- 238000000034 method Methods 0.000 description 6
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000004973 liquid crystal related substance Substances 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 239000012780 transparent material Substances 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 1
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Abstract
The utility model relates to the technical field of display, and particularly relates to a direct-type backlight source for reducing a light shadow problem of the direct-type backlight source. The utility model discloses the direct-type backlight source, which comprises a backboard, a plurality of light sources arranged at the inner bottom surface of the backboard, an optical film arranged above the light sources, and a plurality of secondary prisms with pit structures at the bottom parts; the plurality of secondary prisms are arranged between the inner bottom surface of the backboard and the optical film; the bottom pit structure of each secondary prism is covered above each light source, and the top part contacts the optical film. The existing secondary prisms and a lamp holder are integrated, namely a novel secondary prism is adopted; the secondary prism has a role of dispersing an LED (light-emitting diode) light, also can be used for supporting the film, and can obviously reduce the problem of a light shadow, thus, the quality of the direct-type backlight source is improved.
Description
Technical field
The utility model relates to the Display Technique field, particularly a kind of direct-light-type backlight and display unit.
Background technology
At present, LED(Lighting Emitting Diode, light emitting diode) little because having volume, energy-saving and environmental protection etc. have advantage and extensively should be in the backlight fields.
Existing LED-backlit source can be divided into side-light type back light and two kinds of structures of direct-light-type backlight according to the arrangement of LED lamp.As shown in Figure 1, structural representation for a kind of direct-light-type backlight in the prior art, comprise: backboard 10, body side frame 11, end reflector plate 12, a plurality of LED lamp 13, a plurality of secondary prism 14, a plurality of lamp holder 15, upper frame 16, diaphragm 17, wherein, body side frame 11 is positioned at the both sides of backboard 10; Have a plurality of via holes on the end reflector plate 12, be positioned on the bottom surface of backboard 10; LED lamp 13 is arranged on the bottom surface in the backboard 10, and can pass the corresponding via hole on the end reflector plate 12; In each via area, the top correspondence of LED lamp arranges a secondary prism 14; Diaphragm 17 is arranged between body side frame 11 and the upper frame 16; A plurality of lamp holders 15 are arranged between end reflector plate 12 and the diaphragm 17, are used for supporting diaphragm 17.
The light that sends because of LED lamp 13 is spot light, can disperse ejaculation after entering secondary prism 14, under end reflector plate 12 and diaphragm 17 actings in conjunction, forming at last area source penetrates, but because lamp holder 15 placement locations and shape hinder radiation direction, can lamp holder shadow problem occur in lamp holder 15 positions, have a strong impact on the quality of direct-light-type backlight.
The utility model content
The utility model provides a kind of direct-light-type backlight, is used for alleviating the lamp smear problem, promotes the quality of direct-light-type backlight.
A kind of direct-light-type backlight that the utility model provides comprises: backboard, be positioned at a plurality of light sources on the bottom surface of described backboard, and the blooming piece that is positioned at described light source top, the bottom has a plurality of secondary prisms of bowl configurations; Wherein, between the bottom surface and described blooming piece of described a plurality of secondary prisms in described backboard, and the bottom bowl configurations of each described secondary prism covers in the top of a light source, and the top contacts with described blooming piece.
From technique scheme as can be known, the utility model adopts a kind of novel secondary prism, described secondary prism has the effect of diverging LED light, can be used for again supporting diaphragm, it is integrated to be about to existing secondary prism and lamp holder, therefore, and compared with prior art, can obviously alleviate the problem of lamp holder shadow, thereby promote the quality of direct-light-type backlight.
Description of drawings
Fig. 1 is the structural representation of direct-light-type backlight in the prior art;
Fig. 2 is the structural representation of direct-light-type backlight among the utility model embodiment one;
Fig. 3 is the structural representation of direct-light-type backlight among the utility model embodiment two.
The specific embodiment
Existing direct-light-type backlight comprises: backboard, body side frame, end reflector plate, a plurality of LED lamp, a plurality of secondary prism, a plurality of lamp holder, upper frame, diaphragm, wherein, body side frame is positioned at the both sides of backboard, has a plurality of via holes on the end reflector plate, is positioned on the bottom surface of backboard; The LED lamp is arranged on the interior bottom surface of backboard, and can pass the corresponding via hole on the end reflector plate; In each via area, the top correspondence of LED lamp arranges a secondary prism; Diaphragm arrangement is between body side frame and upper frame; A plurality of lamp holders are arranged between end reflector plate and the diaphragm, are used for supporting diaphragm.But because lamp props up seated position and shape hinders radiation direction, lamp holder shadow problem can occur, have a strong impact on the quality of direct-light-type backlight.
In view of this, the utility model provides a kind of improved technical scheme, existing secondary prism and lamp holder is integrated, namely adopt a kind of novel secondary prism, described secondary prism has the effect of diverging LED light, can be used for again supporting diaphragm, can alleviate the problem of lamp holder shadow, thereby promoted the quality of direct-light-type backlight.
In order to make those skilled in the art better understand the technical solution of the utility model, below in conjunction with Figure of description the utility model embodiment is described in detail.
As shown in Figure 2, the utility model embodiment one provides a kind of direct-light-type backlight, comprising: backboard 20 is positioned at a plurality of light sources 21 on the bottom surface of backboard 20, and the blooming piece 23 that is positioned at light source 21 tops, the bottom has a plurality of secondary prisms 22 of bowl configurations; Wherein, between the bottom surface and blooming piece 23 of a plurality of secondary prisms 22 in backboard 20, and the bottom bowl configurations of each secondary prism 22 covers in the top of a light source 21, and the top contacts with blooming piece 23.
Particularly, the pyramidal structure of secondary prism 22 for being made by optically transparent material in the present embodiment, for example taper shape, pyramid or other pyramidal structure; Bottom at secondary prism 22 has pit, and for the light that light source is sent evenly spreads ejaculation, preferably, described pit is hemispherical dome structure, can certainly other can reach the structure of technique effect for V-arrangement or U-shaped pit etc.On the conical surface of secondary prism 22, be provided with a plurality of V-shaped grooves, preferably, a plurality of V-type grooves evenly distribute on the conical surface of secondary prism 22, and namely several V-type grooves on each conical surface of secondary prism 22 are equidistantly arranged; Further, several V-type grooves in the same conical surface are arranged in parallel with each other, and a plurality of V-type grooves of secondary prism 22 conical surfaces can make the light of incident evenly disperse ejaculation.
A plurality of secondary prisms 22 are positioned on the bottom surface of backboard 20, and the bottom of each secondary prism 22 covers in the top of a LED lamp 21, and the top contacts with blooming piece 23; Secondary prism 22 plays the divergence of beam of incident is penetrated, and is used for simultaneously supporting diaphragm 23.
Preferably, for the ease of secondary prism 22 being installed on the bottom surface in the backboard 20, the groove that has secondary prism 22 bottoms of to pack on the bottom surface in the backboard 20, more particularly, bottom surface in backboard 20 has groove, secondary prism 22 is installed in the groove of backboard 20, can prevents that secondary prism 22 from moving, improve the light efficiency of secondary prism 22.
Preferably, the light source in the above-mentioned backlight is that light emitting diode (LED) or other can play the device of light source effect.
From technique scheme as can be known, in embodiment one, secondary prism 22 had both had the effect that incident ray is broken up, and can be used for again support of optical diaphragm 23, therefore, compared with prior art, the transparency to light of secondary prism 22 adopts the secondary prism 22 of this structure, owing to can make the light that is gone out by backlight emission shine directly on the diffuser plate, avoid the appearance of dim spot, can obviously alleviate the lamp smear problem of direct-light-type backlight.
As shown in Figure 3, a kind of direct-light-type backlight that the utility model embodiment two provides comprises: backboard 30 is positioned at a plurality of light sources 31 on the bottom surface of backboard 30, and the blooming piece 33 that is positioned at light source 31 tops, the bottom has a plurality of secondary prisms 32 of bowl configurations; Wherein, between the bottom surface and blooming piece 33 of a plurality of secondary prisms 32 in backboard 30, and the bottom bowl configurations of each secondary prism 32 covers in the top of a light source 31, and the top contacts with blooming piece 33.
Particularly, the pyramidal structure of secondary prism 32 for being made by optically transparent material in the present embodiment is such as taper shape, pyramid or other pyramidal structure; Bottom at secondary prism 32 has pit, and for the light that light source is sent evenly spreads ejaculation, preferably, described pit is hemispherical dome structure, can certainly other can reach the structure of technique effect for V-arrangement or U-shaped pit etc.On the conical surface of secondary prism 32, be provided with a plurality of V-shaped grooves, and V-shaped groove is distributed in grid, i.e. a plurality of V-shaped groove cross arrangements form grids, and a plurality of V-type grooves of secondary prism 32 conical surfaces can make the light of incident evenly disperse ejaculation.
A plurality of secondary prisms 32 are positioned on the bottom surface of backboard 30, and the bottom of each secondary prism 32 covers in the top of a LED lamp 31, and the top contacts with blooming piece 33; Secondary prism 32 plays the divergence of beam of incident is penetrated, and is used for simultaneously supporting diaphragm 33.
Preferably, for the ease of secondary prism 32 being installed on the bottom surface in the backboard 30, the groove that has secondary prism 32 bottoms of to pack on the bottom surface in the backboard 30, more particularly, bottom surface in backboard 30 has groove, secondary prism 32 is installed in the groove of backboard 30, can prevents that secondary prism 32 from moving, improve the light efficiency of secondary prism 32.
Preferably, the light source in the above-mentioned backlight is that light emitting diode (LED) or other can play the device of light source effect.
From technique scheme as can be known, in embodiment two, secondary prism 32 had both had the effect that incident ray is broken up, and can be used for again support of optical diaphragm 33, therefore, compared with prior art, adopt the secondary prism of this structure, because the transparency to light of secondary prism 32, the light that is gone out by backlight emission is shone directly on the diffuser plate, avoid the appearance of dim spot, the problem of the lamp holder shadow that can obviously alleviate, thus promoted the quality of direct-light-type backlight.
The utility model also provides a kind of display unit simultaneously, comprises the direct-light-type backlight with above-mentioned technical characterictic; Wherein, described liquid crystal indicator can be the display unit such as LCD TV, liquid crystal display, Electronic Paper.
In sum, the direct-light-type backlight that the utility model provides, adopt a kind of novel secondary prism, described secondary prism has the effect of diverging LED light, can be used for again supporting diaphragm, and it is integrated to be about to lamp holder of the prior art and secondary prism, thereby the problem of the lamp holder shadow that alleviates, promote the quality of direct-light-type backlight, in addition, also can save the production cost of direct-light-type backlight.
Obviously, those skilled in the art can carry out various changes and modification to the utility model and not break away from spirit and scope of the present utility model.Like this, if of the present utility model these are revised and modification belongs within the scope of the utility model claim and equivalent technologies thereof, then the utility model also is intended to comprise these changes and modification interior.
Claims (11)
1. direct-light-type backlight comprises: backboard, be positioned at a plurality of light sources on the bottom surface of described backboard, and the blooming piece that is positioned at described light source top; It is characterized in that, comprise that also the bottom has a plurality of secondary prisms of bowl configurations; Between the bottom surface and described blooming piece of described a plurality of secondary prism in described backboard, and the bottom bowl configurations of each described secondary prism covers in the top of a light source, and the top contacts with described blooming piece.
2. direct-light-type backlight as claimed in claim 1 is characterized in that, described secondary prism is pyramidal structure.
3. direct-light-type backlight as claimed in claim 2 is characterized in that, described pyramidal structure is taper shape or pyramid.
4. direct-light-type backlight as claimed in claim 2 or claim 3 is characterized in that having a plurality of V-type grooves on the conical surface of described secondary prism.
5. direct-light-type backlight as claimed in claim 4 is characterized in that, described a plurality of V-type grooves evenly distribute on the conical surface of described secondary prism.
6. direct-light-type backlight as claimed in claim 5 is characterized in that, several V-type grooves in the same conical surface are arranged in parallel with each other.
7. direct-light-type backlight as claimed in claim 4 is characterized in that, described a plurality of V-type grooves distributed in grid on the conical surface of described secondary prism.
8. direct-light-type backlight as claimed in claim 4 is characterized in that, the bowl configurations of described secondary prism is hemispherical.
9. direct-light-type backlight as claimed in claim 1 is characterized in that, has the groove of the described light source of can packing on the bottom surface in the described backboard.
10. such as claim 1-3 or 9 each described direct-light-type backlights, it is characterized in that: described light source is light emitting diode.
11. a display unit is characterized in that, comprises such as arbitrary described direct-light-type backlight among the claim 1-10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012203646869U CN202708858U (en) | 2012-07-25 | 2012-07-25 | Direct-type backlight source and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012203646869U CN202708858U (en) | 2012-07-25 | 2012-07-25 | Direct-type backlight source and display device |
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| Publication Number | Publication Date |
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| CN202708858U true CN202708858U (en) | 2013-01-30 |
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| CN2012203646869U Expired - Lifetime CN202708858U (en) | 2012-07-25 | 2012-07-25 | Direct-type backlight source and display device |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103591509A (en) * | 2013-11-08 | 2014-02-19 | 京东方科技集团股份有限公司 | Backlight source and display device |
| WO2014032322A1 (en) * | 2012-08-31 | 2014-03-06 | 深圳市华星光电技术有限公司 | Direct backlight module and led package member thereof |
| CN104110612A (en) * | 2014-07-07 | 2014-10-22 | 京东方光科技有限公司 | Straight-down type backlight source structure, backlight source module and liquid crystal display device |
| CN106609959A (en) * | 2016-12-27 | 2017-05-03 | 广州弥德科技有限公司 | A direct type directional backlight source |
| CN108644647A (en) * | 2018-07-16 | 2018-10-12 | 深圳创维－Rgb电子有限公司 | A kind of down straight aphototropism mode set and display |
| CN110007515A (en) * | 2019-04-03 | 2019-07-12 | 惠州市华星光电技术有限公司 | Backlight module and display device |
| CN110349512A (en) * | 2019-07-01 | 2019-10-18 | 惠州市华星光电技术有限公司 | Backlight module and display |
-
2012
- 2012-07-25 CN CN2012203646869U patent/CN202708858U/en not_active Expired - Lifetime
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014032322A1 (en) * | 2012-08-31 | 2014-03-06 | 深圳市华星光电技术有限公司 | Direct backlight module and led package member thereof |
| CN103591509A (en) * | 2013-11-08 | 2014-02-19 | 京东方科技集团股份有限公司 | Backlight source and display device |
| WO2015067027A1 (en) * | 2013-11-08 | 2015-05-14 | 京东方科技集团股份有限公司 | Backlight source and display device |
| CN103591509B (en) * | 2013-11-08 | 2015-09-09 | 京东方科技集团股份有限公司 | A kind of backlight and display device |
| US9651204B2 (en) | 2013-11-08 | 2017-05-16 | Boe Technology Group Co., Ltd. | Backlight and display device having the same |
| CN104110612A (en) * | 2014-07-07 | 2014-10-22 | 京东方光科技有限公司 | Straight-down type backlight source structure, backlight source module and liquid crystal display device |
| CN106609959A (en) * | 2016-12-27 | 2017-05-03 | 广州弥德科技有限公司 | A direct type directional backlight source |
| CN108644647A (en) * | 2018-07-16 | 2018-10-12 | 深圳创维－Rgb电子有限公司 | A kind of down straight aphototropism mode set and display |
| WO2020015341A1 (en) * | 2018-07-16 | 2020-01-23 | 深圳创维－Rgb电子有限公司 | Direct-type backlight module and display |
| CN108644647B (en) * | 2018-07-16 | 2020-03-17 | 深圳创维－Rgb电子有限公司 | Direct type backlight module and display |
| CN110007515A (en) * | 2019-04-03 | 2019-07-12 | 惠州市华星光电技术有限公司 | Backlight module and display device |
| CN110349512A (en) * | 2019-07-01 | 2019-10-18 | 惠州市华星光电技术有限公司 | Backlight module and display |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130130 |