CN201083916Y - Backlight source device - Google Patents
Backlight source device Download PDFInfo
- Publication number
- CN201083916Y CN201083916Y CNU2007200579128U CN200720057912U CN201083916Y CN 201083916 Y CN201083916 Y CN 201083916Y CN U2007200579128 U CNU2007200579128 U CN U2007200579128U CN 200720057912 U CN200720057912 U CN 200720057912U CN 201083916 Y CN201083916 Y CN 201083916Y
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- Prior art keywords
- guide plate
- site
- light guide
- incidence
- plane
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Abstract
The utility model relates to a light supply apparatus for backlight, comprising a light guide plate and point light sources. The light guide plate is provided with an exit surface and a bottom surface with a plurality of mesh points. The utility model is characterized in that: the light guide plate is provided with at least one incident surface; the point light sources are the same number as the incident surfaces; each incident surface is provided with a point light source; the light guide plate is in a polygon shape; each incident surface is positioned on an angle of the polygon; the number of the incident surfaces is less than that of the angles of the polygon. The utility model has the advantages of improved structure, maximally reduced number for point light sources, remarkably reduced cost, effectively decreased power, improved service efficiency for the light sources, and excellent application effect.
Description
Technical field
The utility model relates to a kind of backlight of liquid crystal indicator, more specifically to a kind of light supply apparatus of backlight.
Background technology
At present, liquid crystal indicator is because advantages such as volume is little, little power consumption are widely used in industry-by-industry.And, therefore need provide light source for it because liquid crystal itself can be not luminous, what present liquid crystal indicator adopted is back light source structure.
And existing back light source structure, its light supply apparatus is normally with at least one CCFL (abbreviation of ColdCathode Fluorescent Lamp, Chinese is the cold cathode fluorescent lamp pipe) or the LED (abbreviation of Light Emitting Diode, Chinese is for light emitting diode) design light guide plate side directions in back light source structure with light-source structures such as U, L, I types, with the whole plane of linear light sorurce incident of side form.As shown in Figure 1, light supply apparatus, reflection patch and lower frame that this backlight comprises upper ledge, support, blast patch from top to bottom successively, is made up of light guide plate and L type light source, wherein L type light source is a L type CCFL light source, this structure applications many, and other I, U type light supply apparatus also are the sides that light source is arranged at the assembly light guide plate.But said structure, the electric energy that expends is more.
Light supply apparatus as the disclosed a kind of backlight of Chinese patent literature CN1508601 " back light system ", comprise a light guide plate and a light source, this light guide plate comprises a plane of incidence, a bottom surface and an exit facet, this plane of incidence is used for receiving beam, this bottom surface links to each other with the plane of incidence, this exit facet is relative with the bottom surface, and in order to light beam is derived this light guide plate, this light source is arranged on this plane of incidence one side.Wherein, the bottom surface of this light guide plate is distributed with many sites or V-shaped groove, the many bucking ladder shape prism structures of evenly arranging of this outgoing mask.But, owing to adopted I type light supply apparatus, so power consumption is still bigger.
The light supply apparatus of the disclosed a kind of backlight of Chinese patent literature CN1510484 " area source " for another example, comprise a plurality of pointolites and a light guide plate, this light guide plate comprises a light entrance face and one and the light entrance face light-emitting face and the bottom surface of intersecting, and these a plurality of pointolites are positioned light guide plate light entrance face one side; This bottom surface is provided with the site.Though this structure has adopted LED, still adopt I type light supply apparatus, so the use amount of LED is still many, causes cost to effectively reduce.
Summary of the invention
The purpose of this utility model is that prior art is improved, and a kind of light supply apparatus of backlight is provided, and can effectively reduce the quantity of pointolite, reduces cost, and the technical scheme of employing is as follows:
The light supply apparatus of backlight of the present utility model, comprise light guide plate and pointolite, light guide plate comprises exit facet and bottom surface, the bottom surface is provided with a plurality of sites, it is characterized in that: described light guide plate is provided with at least one plane of incidence, and the number of pointolite is identical with the plane of incidence, and each plane of incidence is equipped with a pointolite, described light guide plate is a polygon, and each plane of incidence is located at respectively on the polygonal angle.
In order to reduce cost, improve the service efficiency of pointolite, the number of the described plane of incidence is less than the number at polygonal angle.
Described site to external radiation, is covered with the bottom surface of light guide plate from each plane of incidence, and big more to the distance of this site with the nearest plane of incidence in site, and then this site is big more.
Near the described plane of incidence site forms many camber lines, and the size of the site in same camber line is all identical, and the center of circle of each camber line is the pointolite corresponding with this plane of incidence.
Described site is wire and is arranged in order, form many netting twines, each netting twine is all parallel with a limit of polygon light guide plate, and each site is evenly distributed on the bottom surface of light guide plate, and the plane of incidence nearest with site is big more to the distance of this site, and then this site is big more.
The xsect of described site is circular, or prismatic, or square.Also can adopt other shape according to actual conditions.
Described pointolite adopts LED usually.Also can adopt other pointolite.
The common shape of existing light guide plate is as follows: modal is quadrilateral, as rectangle, square, prismatic etc., also has triangle, pentagon, hexagonal.In addition, it is circular and oval the shape of some light guide plate being arranged.The technical solution of the utility model can be used for the light guide plate of above-mentioned different shape, also can be applicable to the light guide plate of other unlisted shape.
The utility model beneficial effect against existing technologies is, structure to the light supply apparatus of backlight is improved, reduced the quantity of pointolite as much as possible, therefore reduced cost significantly, effectively reduced the power of the light supply apparatus of backlight, improved the service efficiency of pointolite, result of use is good.
Description of drawings
Fig. 1 is the perspective view of prior art backlight;
Fig. 2 is the perspective view of the utility model embodiment 1;
Fig. 3 is the plan structure synoptic diagram of the utility model embodiment 1;
Fig. 4 is the perspective view of the utility model embodiment 2;
Fig. 5 is the plan structure synoptic diagram of the utility model embodiment 2.
Embodiment
Shown in Fig. 2,3, the light supply apparatus of a kind of backlight in the present embodiment comprises light guide plate 1 and pointolite 2, light guide plate 1 comprises exit facet 11 and bottom surface 12, bottom surface 12 is provided with a plurality of sites 13, and described light guide plate 1 is provided with a plane of incidence 14, and this pointolite 2 is corresponding with the plane of incidence 14.
Described light guide plate 1 is a rectangle, and the plane of incidence 14 is located on the angle of rectangle.
Described site 13 to external radiation, is covered with the bottom surface of light guide plate from the plane of incidence 14, and big more to the distance of this site 13 with the plane of incidence 14, and then this site 13 is big more.
Near the described plane of incidence 14 sites 13 form many camber lines, and the size of the site 13 in same camber line is all identical, and the center of circle of each camber line is the pointolite 2 corresponding with this plane of incidence 14.
The xsect of described site 13 is circular.
Shown in Fig. 4,5, the light supply apparatus of a kind of backlight in the present embodiment, comprise light guide plate 1 ' and 2 pointolites 2 ', light guide plate 1 ' comprise exit facet 11 ' and bottom surface 12 ', a plurality of sites 13, bottom surface 12 ' be provided with ', 2 planes of incidence 14 of described light guide plate 1 ' be provided with ', each pointolite 2 ' all and a plane of incidence 14 ' corresponding.
Described light guide plate 1 ' be rectangle, 2 planes of incidence 14 ' be located at respectively on 2 relative angles of rectangle.
Described site 13 ' be wire from small to large to be arranged in order, form many netting twines, each netting twine all with polygon light guide plate 1 ' a limit parallel, each site 13 ' be evenly distributed in light guide plate 1 ' bottom surface 12 ' on, and with the plane of incidence of a site 13 ' nearest to this site 13 ' distance big more, this site 13 ' big more then.
Described site 13 ' xsect be the square.
The above is preferred embodiment of the present utility model only, is not to be used for limiting practical range of the present utility model; Be all equivalents of being done according to claim scope of the present utility model, be the utility model claim scope and cover.
Claims (9)
1. the light supply apparatus of a backlight, comprise light guide plate and pointolite, light guide plate comprises exit facet and bottom surface, the bottom surface is provided with a plurality of sites, it is characterized in that: described light guide plate is provided with at least one plane of incidence, and the number of pointolite is identical with the plane of incidence, and each plane of incidence is equipped with a pointolite, described light guide plate is a polygon, and each plane of incidence is located at respectively on the polygonal angle.
2. the light supply apparatus of backlight as claimed in claim 1, it is characterized in that: the number of the described plane of incidence is less than the number at polygonal angle.
3. the light supply apparatus of backlight as claimed in claim 2, it is characterized in that: described site to external radiation, is covered with the bottom surface of light guide plate from each plane of incidence, and big more to the distance of this site with the nearest plane of incidence in site, and then this site is big more.
4. the light supply apparatus of backlight as claimed in claim 3 is characterized in that: near the site the described plane of incidence forms many camber lines, and the size of the site in same camber line is all identical, and the center of circle of each camber line is the pointolite corresponding with this plane of incidence.
5. the light supply apparatus of backlight as claimed in claim 2, it is characterized in that: described site is wire and is arranged in order, form many netting twines, each netting twine is all parallel with a limit of polygon light guide plate, each site is evenly distributed on the bottom surface of light guide plate, and the plane of incidence nearest with site is big more to the distance of this site, and then this site is big more.
6. as the light supply apparatus of the described backlight of arbitrary claim among the claim 1-5, it is characterized in that: the xsect of described site is for circular, or prismatic, or square.
7. as the light supply apparatus of the described backlight of arbitrary claim among the claim 1-5, it is characterized in that: the shape of described light guide plate is a quadrilateral, or triangle, or pentagon, or hexagon.
8. the light supply apparatus of backlight as claimed in claim 6, it is characterized in that: the shape of described light guide plate is a quadrilateral, or triangle, or pentagon, or hexagon.
9. as the light supply apparatus of the described backlight of arbitrary claim among the claim 1-5, it is characterized in that: described pointolite adopts LED.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200579128U CN201083916Y (en) | 2007-09-28 | 2007-09-28 | Backlight source device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200579128U CN201083916Y (en) | 2007-09-28 | 2007-09-28 | Backlight source device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201083916Y true CN201083916Y (en) | 2008-07-09 |
Family
ID=39626386
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200579128U Expired - Fee Related CN201083916Y (en) | 2007-09-28 | 2007-09-28 | Backlight source device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201083916Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102620193A (en) * | 2012-03-09 | 2012-08-01 | 青岛海信电器股份有限公司 | Sectional light emitting diode (LED) backlight module and liquid crystal display device |
| CN102692671A (en) * | 2012-06-14 | 2012-09-26 | 深圳市华星光电技术有限公司 | Light guide plate suitable for 3D (three-dimensional) display |
-
2007
- 2007-09-28 CN CNU2007200579128U patent/CN201083916Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102620193A (en) * | 2012-03-09 | 2012-08-01 | 青岛海信电器股份有限公司 | Sectional light emitting diode (LED) backlight module and liquid crystal display device |
| CN102692671A (en) * | 2012-06-14 | 2012-09-26 | 深圳市华星光电技术有限公司 | Light guide plate suitable for 3D (three-dimensional) display |
| CN102692671B (en) * | 2012-06-14 | 2016-02-24 | 深圳市华星光电技术有限公司 | Be applicable to the light guide plate of 3D display |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Shantou Keyi Plastic Co., Ltd. Assignor: Xie Qingjian Contract record no.: 2011440001061 Denomination of utility model: Light source device of back light source Granted publication date: 20080709 License type: Exclusive License Record date: 20111212 |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080709 Termination date: 20160928 |