CN203082714U - Backlight module and display device - Google Patents
Backlight module and display device Download PDFInfo
- Publication number
- CN203082714U CN203082714U CN201320093477XU CN201320093477U CN203082714U CN 203082714 U CN203082714 U CN 203082714U CN 201320093477X U CN201320093477X U CN 201320093477XU CN 201320093477 U CN201320093477 U CN 201320093477U CN 203082714 U CN203082714 U CN 203082714U
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- light source
- led
- led light
- module backlight
- lug boss
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Abstract
The utility model provides a backlight module and a display device. The backlight module comprises a light guide panel, an LED (Light Emitting Diode) light source and a reflecting sheet, wherein the light guide panel comprises a light entrance face, a light exit face and a back face back on to the light exit face; the LED light source is arranged at one side of the light entrance face of the light guide panel and comprises a plurality of LEDs which are arranged at intervals; the reflecting sheet is arranged at one side of the back face of the light guide panel; and the reflectivity of the edge, near one side of the LED light source, of the reflecting sheet and the reflectivity of positions, just facing to gaps between the reflecting sheet and every two adjacent LEDs, are higher than the reflectivity of a position just facing to each LED. According to the backlight module provided by the utility model, the reflectivity of the edge, near one side of the LED light source, of the reflecting sheet and the reflectivity of the positions, just facing to the gaps between the reflecting sheet and every two adjacent LEDs, are higher than the reflectivity of the position just facing to each LED, so that light is reflected to a position of a dark region formed by a gap between every two adjacent LEDs while the loss of light energy is reduced, thus the utilization ratio of the light source is increased and the aim of improving firefly light spots is achieved.
Description
Technical field
The utility model relates to technical field of liquid crystal display, relates in particular to a kind of module backlight and has the display unit of this module backlight.
Background technology
In the demonstration of liquid crystal indicator, module backlight is extremely important, it go out the visual effect that light effect directly has influence on liquid crystal indicator.As shown in Figure 1, traditional side entrance back module is made up of light source 30 and many blooming pieces, these blooming pieces mainly comprise LGP 10(Light Guide Panel, LGP), reflector plate 20 etc., wherein, light source 30 is arranged at the light inlet side of LGP 10, and the display module of liquid crystal indicator is arranged at exiting surface one side of LGP 10, reflector plate 20 is arranged at the back side one side of the described exiting surface dorsad of LGP 10, plays the effect of the utilization rate that improves light.
Because light emitting diode (LED) energy-saving and environmental protection, high efficiency, therefore, in the used module backlight of liquid crystal indicator, generally adopt led light source to substitute original C CFL light source at present.Along with the optical efficiency of LED progressively improves, the usage quantity that reduces LED in liquid crystal indicator has become trend, therefore, led light source in the module backlight adopts the LED lamp bar that is arranged at intervals with a plurality of LED usually, when each LED was luminous according to 120 °, light produces the firefly hot spot when LGP penetrates phenomenon can appear.
In order to improve the phenomenon of firefly hot spot, have usually in the prior art and adopt following several settling modes:
A kind of mode is to carry out micro-structural in the light inlet side of the LGP of module backlight to handle, and promptly the light inlet side at LGP is provided with micro-structural, specifically is directly to do groove on the mould of making LGP.But, adopt this mode that certain technological deficiency is arranged, melt when being circulated in the mould such as the former material PMMA/PC particle of LGP, because constantly cooling in this process, particle mobile relatively poor causes into groove later stage die forming inhomogeneously, causes the finished product yield to reduce;
Also having a kind of mode is to adjust by the light guide plate mesh point of routine, and its shortcoming is the tuned plate increased frequency, and the correcting cycle is long, causes cost to rise.
The utility model content
The purpose of this utility model is the display unit that a kind of module backlight is provided and has this module backlight, simple in structure, can improve the uneven phenomenon of module bright dipping backlight, thereby solve the firefly hot spot problem of display frame, and make simply, cost is lower.
Technical scheme provided by the utility model is as follows:
A kind of module backlight comprises:
LGP comprises that incidence surface, exiting surface reach the back side back to described exiting surface;
Be arranged at the led light source of incidence surface one side of described LGP, comprise a plurality of LED that are provided with at interval;
And, be arranged at the reflector plate of the back side one side of described LGP;
Wherein, described reflector plate is near a lateral edges place of described led light source, and the gap between adjacent per two described LED over against the position reflectivity greater than with each described LED over against the reflectivity of position.
Preferably, described reflector plate comprises:
Substrate layer, the reflecting surface of described substrate layer and the back side of described LGP are oppositely arranged;
Be formed at the secondary reflection layer on the reflecting surface of described substrate layer, described secondary reflection layer comprise the gap that is distributed in respectively between adjacent per two described LED over against a plurality of lug bosses of position, and a plurality of described lug boss is provided with at a lateral edges place of the close described led light source of described substrate layer.
Preferably, a plurality of described lug bosses are to be to be sprayed on the reflecting surface of described substrate layer by the high reflectance particle to form by a plurality of described lug bosses.
Preferably, a plurality of described lug bosses barium sulfate particle that is just high reflectances is sprayed on the reflecting surface of described substrate layer and forms.
Preferably, a side direction of the certainly close described led light source of the dispersion of distribution of each described lug boss in the LED orientation narrows down gradually away from a side of described led light source.
Preferably, gap length in the described led light source between adjacent per two LED is 5.4mm, the dispersion of distribution in the LED orientation of one side of the close described led light source of described lug boss is 5.0mm, from being 4.57mm near a side of described led light source to the distribution length away from a side of described led light source, the thickness of described lug boss is 0.03 ± 001mm to described lug boss in the vertical LED orientation.
Preferably, each described lug boss is made of a plurality of micro-protrusions.
Preferably, described micro-protrusions is shaped as spherical, square, cylindricality, prismatic, triangle.
Preferably, the distance of a lateral edges of the close described led light source of a lateral edges of the close described led light source of described lug boss and described substrate layer is 1.5 ~ 2.0mm.
The utility model also provides a kind of display unit, and it comprises above-mentioned module backlight.
The beneficial effects of the utility model are as follows:
Reflector plate is at the lateral edges place near led light source in the module backlight of the present utility model, and the gap between adjacent per two LED over against the position reflectivity greater than with each LED over against the reflectivity of position, thereby when reducing light energy losses, light is reflexed to the position, dark space that the gap between the two adjacent LEDs forms, thereby improve the light source utilization ratio, reach the purpose of improving the firefly hot spot.
Description of drawings
Fig. 1 represents the structure cutaway view of traditional module backlight;
Fig. 2 represents the structure cutaway view of module backlight of the present utility model;
The position of reflector plate and led light source concerns schematic top plan view in Fig. 3 presentation graphs 2.
The specific embodiment
Below in conjunction with accompanying drawing principle of the present utility model and feature are described, institute gives an actual example and only is used to explain the utility model, is not to be used to limit scope of the present utility model.
As shown in Figures 2 and 3, provide a kind of module backlight in the present embodiment, it comprises:
LGP 100, this LGP 100 comprise the back side 103 that incidence surface 101, exiting surface 102 reach back to exiting surface 102;
Be arranged at the led light source 200 of incidence surface 101 1 sides of LGP 100, this led light source 200 comprises a plurality of LED201 that are provided with at interval;
And, be arranged at the reflector plate 300 of the back side 103 1 sides of LGP 100;
Wherein,
In the module backlight that such scheme provided, reflector plate 300 is at the lateral edges place near led light source 200, and the gap between adjacent per two LED201 over against the position reflectivity greater than with each LED201 over against the reflectivity of position, thereby when reducing the light energy loss, light is reflexed to the position, dark space that the gap between adjacent per two LED201 forms, thereby improve the light source utilization ratio, improve the light uniformity, reach the purpose of improving the firefly hot spot.
In the module backlight that present embodiment provided, preferably, realize reflector plate 300 in the following manner near a lateral edges place of described led light source, and adjacent per two LED201 between the gap over against the position reflectivity greater than with each LED201 over against the reflectivity of position:
As shown in Figures 2 and 3, reflector plate 300 comprises:
Be formed at the secondary reflection layer 302 on the reflecting surface of substrate layer 301, secondary reflection layer 302 comprise be distributed in respectively and adjacent per two LED201 between the gap over against a plurality of lug boss 302a of position, and corresponding lug boss 302a in the gap between per two adjacent LED 201, and a plurality of lug boss 302a are provided with at a lateral edges place of the close led light source 200 of described substrate layer.
Such scheme, substrate layer 301 can be identical with reflector plate material in traditional module backlight, only the reflecting surface of traditional reflector plate near a lateral edges place of led light source 200 and and adjacent per two LED201 between the gap over against the position form a plurality of lug boss 302a, thereby, a plurality of lug boss 302a will carry out secondary reflection from the light that LGP 100 reflects, when having reduced light energy losses, light is reflexed to the position, dark space, thereby improved the light source utilization ratio, also reach raising light uniformity, improved the purpose of firefly hot spot.
What certainly can understand is, in actual applications, also can adopt other modes make reflector plate 300 and adjacent per two LED201 between the gap over against the position reflectivity greater than with each LED201 over against the reflectivity of position, such as: respectively reflector plate 300 with adjacent per two LED201 between the gap over against the position and each LED201 over against the position adopt the different modes such as material of reflectivity, enumerate no longer one by one at this.
In the present embodiment, preferred, the material that the secondary reflection layer is adopted is the high reflectance particle, and a plurality of lug boss 302a are coated on the reflecting surface of substrate layer by the high reflectance particle spraying to form.In the present embodiment, preferred, what this high reflectance particle adopted is the barium sulfate particle of high reflectance.A plurality of lug boss 302a adopt to spray on the reflecting surface that coated form is sprayed at the barium sulfate particle of high reflectance substrate layer 301 to form.Adopt such scheme, only need when making reflector plate 300, on the reflecting surface of reflector plate 300 with the gap of adjacent per two LED over against the position apply and get final product, manufacture craft is simple, with compare in the mode of light guide plate mesh point correcting in the prior art, work simplification, cost reduces.
What certainly can understand is that in actual applications, a plurality of lug boss 302a adopt other modes to be formed on the reflecting surface of substrate layer 301.
In addition, as shown in Figures 2 and 3, each lug boss 302a applies a plurality of micro-protrusions that form by injection and constitutes.The shape of micro-protrusions can only provide the shape of several preferred micro-protrusions at this for various convex shape such as sphere, triangle, square, cylindricality or prismatics, but the shape of micro-protrusions is not limited.
In addition, owing to the easy more formation of side dark space, therefore the closer to led light source 200, in the present embodiment, preferably, as shown in Figure 3, a side direction of the certainly close led light source 200 of the dispersion of distribution of each lug boss 302a in the LED orientation narrows down gradually away from a side of led light source 200.Adopt this scheme, the bright dipping that more helps module backlight is even.
In addition, the particular location of secondary reflection layer is decided according to the distance between the LED, and its width and length are to set according to the different optical performance of different model product and structure.For example: as shown in Figure 3, in the led light source between adjacent per two LED is 5.4mm apart from the S size, then the dispersion of distribution a in the LED orientation of a side of the close led light source 200 of lug boss 302a is 5.0mm, from being 4.57mm near a side of described led light source 200 to the distribution length b away from a side of described led light source 200, the thickness h of described lug boss is 0.03 ± 0.01mm to described lug boss 302a in the vertical LED orientation.And preferred, the distance L of a lateral edges of a side of the close described led light source 200 of described lug boss 302a and the close described led light source 200 of described substrate layer 301 is 1.5 ~ 2.0mm.
Certainly, in actual applications, the width of lug boss 302a and thickness etc. also can rationally be adjusted according to actual needs.
The utility model also provides a kind of display unit, the module backlight that it comprises in the present embodiment being provided.Obviously, the beneficial effect that module backlight brought that display unit provided by the utility model also has present embodiment and provided promptly can improve the light utilization ratio and improve the firefly hot spot, improves display effect.
It more than is preferred implementation of the present utility model; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (10)
1. a module backlight is characterized in that, comprising:
LGP comprises that incidence surface, exiting surface reach the back side back to described exiting surface;
Be arranged at the led light source of incidence surface one side of described LGP, comprise a plurality of LED that are provided with at interval;
And, be arranged at the reflector plate of the back side one side of described LGP;
Wherein, a lateral edges place of the close described led light source of described reflector plate, and the gap between adjacent per two described LED over against the position reflectivity greater than with each described LED over against the reflectivity of position.
2. module backlight according to claim 1 is characterized in that, described reflector plate comprises:
Substrate layer, the reflecting surface of described substrate layer and the back side of described LGP are oppositely arranged;
Be formed at the secondary reflection layer on the reflecting surface of described substrate layer, described secondary reflection layer comprise the gap that is distributed in respectively between adjacent per two described LED over against a plurality of lug bosses of position, and a plurality of described lug boss is provided with at a lateral edges place of the close described led light source of described substrate layer.
3. module backlight according to claim 2 is characterized in that, a plurality of described lug bosses are to be sprayed on the reflecting surface of described substrate layer by the high reflectance particle to form.
4. module backlight according to claim 3 is characterized in that, described high reflectance particle comprises the barium sulfate particle.
5. module backlight according to claim 2 is characterized in that, a side direction of the certainly close described led light source of the dispersion of distribution of each described lug boss in the LED orientation narrows down gradually away from a side of described led light source.
6. module backlight according to claim 2, it is characterized in that, gap length in the described led light source between adjacent per two LED is 5.4mm, the dispersion of distribution of one side in the LED orientation of the close described led light source of described lug boss is 5.0mm, the distribution length of described lug boss in the vertical LED orientation is 4.57mm, and the thickness of described lug boss is 0.03 ± 0.01mm.
7. module backlight according to claim 2 is characterized in that, each described lug boss is made of a plurality of micro-protrusions.
8. module backlight according to claim 7 is characterized in that, being shaped as of described micro-protrusions is spherical, square, cylindricality, prismatic or triangle.
9. module backlight according to claim 2 is characterized in that, the distance of a lateral edges of a lateral edges of the close described led light source of described lug boss and the close described led light source of described substrate layer is 1.5 ~ 2.0mm.
10. a display unit is characterized in that, comprises as each described module backlight of claim 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320093477XU CN203082714U (en) | 2013-02-28 | 2013-02-28 | Backlight module and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320093477XU CN203082714U (en) | 2013-02-28 | 2013-02-28 | Backlight module and display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203082714U true CN203082714U (en) | 2013-07-24 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320093477XU Expired - Lifetime CN203082714U (en) | 2013-02-28 | 2013-02-28 | Backlight module and display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203082714U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103807674A (en) * | 2014-01-27 | 2014-05-21 | 北京京东方显示技术有限公司 | Backlight module and display device |
| CN104749687A (en) * | 2015-04-14 | 2015-07-01 | 武汉华星光电技术有限公司 | Light guide plate and backlight module |
| CN104763937A (en) * | 2015-04-20 | 2015-07-08 | 京东方科技集团股份有限公司 | Backlight backing plate, backlight module and display device |
| CN108693592A (en) * | 2017-04-07 | 2018-10-23 | 元太科技工业股份有限公司 | Leaded light component |
| US10823895B2 (en) | 2014-01-29 | 2020-11-03 | E Ink Holdings Inc. | Light-emitting module |
-
2013
- 2013-02-28 CN CN201320093477XU patent/CN203082714U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103807674A (en) * | 2014-01-27 | 2014-05-21 | 北京京东方显示技术有限公司 | Backlight module and display device |
| US9946006B2 (en) | 2014-01-27 | 2018-04-17 | Boe Technology Group Co., Ltd. | Backlight unit and display device |
| US10823895B2 (en) | 2014-01-29 | 2020-11-03 | E Ink Holdings Inc. | Light-emitting module |
| CN104749687A (en) * | 2015-04-14 | 2015-07-01 | 武汉华星光电技术有限公司 | Light guide plate and backlight module |
| CN104749687B (en) * | 2015-04-14 | 2017-12-12 | 武汉华星光电技术有限公司 | Light guide plate and backlight module |
| CN104763937A (en) * | 2015-04-20 | 2015-07-08 | 京东方科技集团股份有限公司 | Backlight backing plate, backlight module and display device |
| CN108693592A (en) * | 2017-04-07 | 2018-10-23 | 元太科技工业股份有限公司 | Leaded light component |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130724 |
|
| CX01 | Expiry of patent term |