CN104279462B - Backlight source and display device - Google Patents
Backlight source and display device Download PDFInfo
- Publication number
- CN104279462B CN104279462B CN201410479004.2A CN201410479004A CN104279462B CN 104279462 B CN104279462 B CN 104279462B CN 201410479004 A CN201410479004 A CN 201410479004A CN 104279462 B CN104279462 B CN 104279462B
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- CN
- China
- Prior art keywords
- light
- face
- guide plate
- luminescence unit
- lampshade
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133615—Edge-illuminating devices, i.e. illuminating from the side
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Planar Illumination Modules (AREA)
Abstract
The invention provides a backlight source and a display device. The backlight source comprises a light source, a back plate and a light guide plate, wherein the back plate comprises a bottom plate and a side frame arranged on the edge of the bottom plate in a surrounding way, the light guide plate is arranged above the bottom plate, the light source is arranged on the side frame, in addition, the light source is opposite to the edge end surface of the light guide plate, the light source comprises an illumination unit and a lamp shade arranged outside the illumination unit in a covering way, and light rays given out from the illumination unit can be uniform through the lamp shade. The backlight source has the advantages that the lamp shade is arranged outside the illumination unit in the covering way, and the lamp shade can realize the uniformization treatment on the light rays given out by the illumination unit, so that the light rays given out by the illumination unit can become more uniform, the nonuniform brightness phenomenon (i.e., the Hotspot firefly phenomenon) of the light rays given out by the illumination unit can be avoided, and further, the backlight effect of the backlight source is improved.
Description
Technical field
The present invention relates to display technology field, in particular it relates to a kind of backlight and display device.
Background technology
Liquid crystal indicator (lcd:liquid crystal display) is because of its small volume, the spy such as low in energy consumption, radiationless
Point has become the main product in current panel display apparatus.Backlight is requisite device in liquid crystal indicator, the back of the body
Light source is used for providing backlight in display for display floater.
Develop to more frivolous direction to adapt to display floater, backlight generally adopts side entering type.Side entrance back
Source is typically light source is arranged on lateral edges of light guide plate, so that the light that light source sends is incident to from the edge end face of light guide plate
In light guide plate.Light source in backlight generally adopts LED lamp bar, LED lamp bar is provided with multiple LED lamps, multiple LED lamps are along lamp
The bearing of trend arrangement equally spaced from each other of bar.
As shown in figure 1, because the light range of exposures of each LED lamp 4 is a sector region, and the folder of this sector region
Angle angle is usually 120 °, and in this sector region, light luminance is higher, so this sector region defines the light of whole LED lamp bar
Line clear zone 5, and the interval region light luminance between two spaced LED lamps 4 is relatively low, thus two LED lamps 4 it
Between interval region be readily formed light dark space 6, thus leading to the light that whole LED lamp bar sends that Lampyridea occurs
(i.e. the high region of brightness and the low region of brightness are alternate, make to occur in that on display floater light and dark multiple for hotspot phenomenon
Point), have a strong impact on the display quality of display floater.
Content of the invention
The present invention is directed to above-mentioned technical problem present in prior art, provides a kind of backlight and display device.This back of the body
By setting lampshade in the outer bread of luminescence unit, the light that lampshade can send to luminescence unit carries out Homogenization Treatments to light source, makes
The light that luminescence unit sends becomes more uniform, thus avoiding the phenomenon that brightness unevenness in the light that luminescence unit sends
(i.e. hotspot Lampyridea phenomenon), and then improve the backlight effect of backlight.
The present invention provides a kind of backlight, and including light source, backboard and light guide plate, described backboard includes base plate and is located at institute with enclosing
State the frame of bottom edge, described light guide plate is arranged on above described base plate, and described light source is arranged on described frame, and described
Light source is relative with the edge end face of described light guide plate, and described light source includes luminescence unit, and described light source also includes being packaged in described
Lampshade outside luminescence unit, described lampshade can make the equalizing light rays that described luminescence unit sends.
Preferably, described lampshade adopts the mixed materials of transparent plastic and pmma or transparent pc granule, and described pmma or
Described transparent pc granule is uniformly mixed with described transparent plastic.
Preferably, described luminescence unit includes the light-emitting area of the edge end face towards described light guide plate and described frame phase
First face of contact and the second face in addition to described light-emitting area and described first face, described lampshade coats described luminous list completely
The described light-emitting area of unit and described second face.
Preferably, described lampshade is provided with reflector plate, the reflecting surface of described reflector plate on the face towards described second face
Towards described second face, and the light exposing to thereon can be reflexed to described light guide plate by described reflector plate.
Preferably, described lampshade is provided with brightening piece on the dorsad face of described light-emitting area, and described brightening piece is led with described
The edge end face of tabula rasa is relatively.
Preferably, described brightening piece and the edge end face of described light guide plate fit.
Preferably, described lampshade inwall and described luminescence unit fit.
Preferably, described luminescence unit includes LED lamp bar.
The present invention also provides a kind of display device, including above-mentioned backlight.
Beneficial effects of the present invention: backlight provided by the present invention, by setting lampshade, lampshade in the outer bread of luminescence unit
The light that luminescence unit can be sent carries out Homogenization Treatments, makes the light that luminescence unit sends become more uniform, thus
Avoid the phenomenon (i.e. hotspot Lampyridea phenomenon) that brightness unevenness in the light that luminescence unit sends, and then improve the back of the body
The backlight effect of light source.
Display device provided by the present invention, by using above-mentioned backlight, not only improving the backlight of this display device
Effect, but also improve the display quality of this display device.
Brief description
Fig. 1 is the light irradiates schematic diagram of LED lamp bar in prior art；
Fig. 2 is the structure sectional view of backlight in the embodiment of the present invention 1.
Description of reference numerals therein:
1. light source；11. luminescence units；111. light-emitting area；112. first faces；113. second faces；12. lampshades；2. backboard；
21. base plates；22. frames；3. light guide plate；31. edge end faces；13. reflector plates；131. reflecting surface；14. brightening pieces；4.led lamp；
5. light clear zone；6. light dark space.
Specific embodiment
For making those skilled in the art more fully understand technical scheme, below in conjunction with the accompanying drawings and be embodied as
To the present invention, a kind of backlight providing and display device are described in further detail mode.
Embodiment 1:
The present embodiment provides a kind of backlight, as shown in Fig. 2 including light source 1, backboard 2 and light guide plate 3, backboard 2 includes bottom
Plate 21 and enclose the frame 22 being located at base plate 21 edge, light guide plate 3 is arranged on above base plate 21, and light source 1 is arranged on frame 22, and
Light source 1 is relative with the edge end face 31 of light guide plate 3, and light source 1 includes luminescence unit 11, and light source 1 also includes being packaged in luminescence unit
The lampshade 12 of 11 outsides, lampshade 12 can make the equalizing light rays that luminescence unit 11 sends.
Wherein, lampshade 12 adopts the mixed materials of transparent plastic and pmma or transparent pc granule, and pmma or transparent pc
Grain is uniformly mixed with transparent plastic.It should be noted that transparent plastic is different from the performance of pmma or transparent pc granule general
Penetrating optical plastic, the fusing point of light-passing plastic as common in this is lower than the fusing point of pmma or transparent pc granule, and this common light-passing plastic
Coefficient of refraction be less than the coefficient of refraction of pmma or transparent pc granule (coefficient of refraction of pmma or transparent pc granule be more than air
Coefficient of refraction, this enables pmma or transparent pc granule to carry out more preferable scattering process to the light exposing to thereon, makes light
Line becomes more uniform).Generally transparent plastic is melted, then the pmma or saturating by the transparent plastic after fusing and fine particle shape
Bright pc granule uniformly mixes, and then again makes lampshade structure.The lampshade 12 of this material can be carried out to the light exposing to thereon
Scattering is processed, and makes the light transmiting from lampshade 12 become more uniform, thus avoiding the light that luminescence unit 11 sends
The phenomenon (i.e. hotspot Lampyridea phenomenon) of brightness unevenness occurs.
In the present embodiment, luminescence unit 11 includes light-emitting area 111 and the frame 22 of the edge end face 31 towards light guide plate 3
The first face 112 contacting and the second face 113 in addition to light-emitting area 111 and the first face 112, lampshade 12 coats luminous single completely
The light-emitting area 111 of unit 11 and the second face 113.It is arranged such, the light that luminescence unit 11 sends can be made to can be transferred through lampshade 12 and enter
Row Homogenization Treatments, so that the light that luminescence unit 11 sends becomes more uniform, and then lift backlight effect.
In the present embodiment, lampshade 12 is provided with reflector plate 13, the reflecting surface of reflector plate 13 on the face towards the second face 113
131 towards the second face 113, and the light exposing to thereon can be reflexed to light guide plate 3 by reflector plate 13.The setting of reflector plate 13,
The light that luminescence unit 11 sends can be made can be incident upon in light guide plate 3 through lampshade 12, thus decreasing the loss of light, carry
The high utilization rate of light.
In the present embodiment, lampshade 12 is provided with brightening piece 14, brightening piece 14 and light guide plate on the face in backward luminous face 111
3 edge end face 31 is relatively.Brightening piece 14 can increase the brightness of the light transmitting from lampshade 12, thus counteracting by lighting
Unit 11 and the light losing of the distance between light guide plate 3 generation, improve backlight effect.
In the present embodiment, brightening piece 14 is fitted with the edge end face 31 of light guide plate 3.Because brightening piece 14 is sticked in lampshade
On 12, so that brightening piece 14 and the edge end face 31 of light guide plate 3 is fitted, that is, allow lampshade 12 fit with light guide plate 3, so set
Putting, the distance between luminescence unit 11 and light guide plate 3 being reduced further, thus reduce further due to luminescence unit 11
With the distance between light guide plate 3 and the light losing that produces, improve backlight effect.
In the present embodiment, lampshade 12 inwall and luminescence unit 11 fit.It is arranged such, luminescence unit 11 can be made and lead
The distance between tabula rasa 3 reduces further, thus reduce further due to the distance between luminescence unit 11 and light guide plate 3
The light losing producing, improves backlight effect.
In the present embodiment, luminescence unit 11 adopts LED lamp bar.Because LED lamp bar is assembled by multiple spaced LED lamps
Form, superposition between light-emitting zone for the light that multiple LED lamps send is easy to Lampyridea phenomenon (bright dark areas phase
Between), after LED lamp bar periphery bag sets lampshade 12, equalizing light rays that LED lamp bar can be made to send, make the light that LED lamp bar sends
No longer Lampyridea phenomenon in line, thus improving backlight effect.
It should be noted that luminescence unit 11 can also be the others light-emitting component such as fluorescent lamp or electric filament lamp.
The beneficial effect of embodiment 1: the backlight in embodiment 1, by setting lampshade, lampshade energy in the outer bread of luminescence unit
The enough light that luminescence unit is sent carries out Homogenization Treatments, makes the light that luminescence unit sends become more uniform, thus keeping away
Exempt from the phenomenon (i.e. hotspot Lampyridea phenomenon) that brightness unevenness in the light that luminescence unit sends, and then improve backlight
The backlight effect in source.
Embodiment 2:
The present embodiment provides a kind of display device, including the backlight in embodiment 1.
By using the backlight in embodiment 1, not only improving the backlight effect of this display device, but also improving
The display quality of this display device.
Display device provided by the present invention can be: liquid crystal panel, LCD TV, display, mobile phone, navigator etc. are appointed
What has product or the part of display function.
It is understood that the embodiment of above principle being intended to be merely illustrative of the present and the exemplary enforcement adopting
Mode, but the invention is not limited in this.For those skilled in the art, in the essence without departing from the present invention
In the case of god and essence, various modifications and improvement can be made, these modifications and improvement are also considered as protection scope of the present invention.
Claims (6)
1. a kind of backlight, including light source, backboard and light guide plate, described backboard includes base plate and is located at described bottom edge with enclosing
Frame, described light guide plate is arranged on above described base plate, and described light source is arranged on described frame, and described light source is led with described
Relatively, described light source includes luminescence unit it is characterised in that described light source also includes being packaged in described sending out for the edge end face of tabula rasa
Lampshade outside light unit, described lampshade can make the equalizing light rays that described luminescence unit sends；Described luminescence unit includes face
The first face from described frame to the light-emitting area of the edge end face of described light guide plate that contact with and except described light-emitting area and described the
The second face beyond simultaneously, described lampshade coats the described light-emitting area of described luminescence unit and described second face completely；Described lamp
Cover on and be dorsad provided with brightening piece on the face of described light-emitting area, described brightening piece is relative with the edge end face of described light guide plate；Institute
State lampshade inwall to fit with described luminescence unit.
2. backlight according to claim 1 is it is characterised in that described lampshade adopts transparent plastic and pmma or transparent pc
The mixed materials of granule, and described pmma or described transparent pc granule uniformly mixed with described transparent plastic.
3. backlight according to claim 2 is it is characterised in that described lampshade is arranged on the face towards described second face
There is a reflector plate, the reflecting surface of described reflector plate is towards described second face, and described reflector plate can be anti-by exposing to light thereon
It is incident upon described light guide plate.
4. backlight according to claim 3 is it is characterised in that the edge end face phase of described brightening piece and described light guide plate
Laminating.
5. backlight according to claim 4 is it is characterised in that described luminescence unit includes LED lamp bar.
6. a kind of display device is it is characterised in that include the backlight described in claim 1-5 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410479004.2A CN104279462B (en) | 2014-09-18 | 2014-09-18 | Backlight source and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410479004.2A CN104279462B (en) | 2014-09-18 | 2014-09-18 | Backlight source and display device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104279462A CN104279462A (en) | 2015-01-14 |
| CN104279462B true CN104279462B (en) | 2017-02-01 |
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ID=52254632
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410479004.2A Expired - Fee Related CN104279462B (en) | 2014-09-18 | 2014-09-18 | Backlight source and display device |
Country Status (1)
| Country | Link |
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| CN (1) | CN104279462B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104776344B (en) * | 2015-05-05 | 2018-05-29 | 合肥鑫晟光电科技有限公司 | LED light bar, backlight and display device |
| CN105605481B (en) * | 2015-12-24 | 2018-04-20 | 昆山龙腾光电有限公司 | A kind of backlight assembly and backlight module |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2613782Y (en) * | 2003-03-27 | 2004-04-28 | 鸿富锦精密工业（深圳）有限公司 | LED light source device |
| CN2630892Y (en) * | 2003-05-24 | 2004-08-04 | 鸿富锦精密工业（深圳）有限公司 | LED area source |
| CN101487581A (en) * | 2008-01-17 | 2009-07-22 | 富士迈半导体精密工业（上海）有限公司 | LED light source module |
| CN103412356A (en) * | 2013-08-30 | 2013-11-27 | 浙江元泰特种膜有限公司 | Optical diffusion film and preparation method of optical diffusion film |
| CN103574350A (en) * | 2012-07-27 | 2014-02-12 | Lg伊诺特有限公司 | Lighting device |
| CN103672537A (en) * | 2013-12-17 | 2014-03-26 | 合肥京东方光电科技有限公司 | LED light bar, backlight module and display device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101174773B1 (en) * | 2005-06-29 | 2012-08-20 | 엘지디스플레이 주식회사 | Prims sheet and back light unit using the same, and method for fabrication prims sheet |
| KR100792584B1 (en) * | 2006-02-20 | 2008-01-09 | 주식회사 엘티아이 | A LED Back Light Unit Having Lamp Cover |
-
2014
- 2014-09-18 CN CN201410479004.2A patent/CN104279462B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2613782Y (en) * | 2003-03-27 | 2004-04-28 | 鸿富锦精密工业（深圳）有限公司 | LED light source device |
| CN2630892Y (en) * | 2003-05-24 | 2004-08-04 | 鸿富锦精密工业（深圳）有限公司 | LED area source |
| CN101487581A (en) * | 2008-01-17 | 2009-07-22 | 富士迈半导体精密工业（上海）有限公司 | LED light source module |
| CN103574350A (en) * | 2012-07-27 | 2014-02-12 | Lg伊诺特有限公司 | Lighting device |
| CN103412356A (en) * | 2013-08-30 | 2013-11-27 | 浙江元泰特种膜有限公司 | Optical diffusion film and preparation method of optical diffusion film |
| CN103672537A (en) * | 2013-12-17 | 2014-03-26 | 合肥京东方光电科技有限公司 | LED light bar, backlight module and display device |
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| Publication number | Publication date |
|---|---|
| CN104279462A (en) | 2015-01-14 |
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Granted publication date: 20170201 Termination date: 20210918 |