CN101135809A - Light source device of back light source - Google Patents
Light source device of back light source Download PDFInfo
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- CN101135809A CN101135809A CNA2007100307217A CN200710030721A CN101135809A CN 101135809 A CN101135809 A CN 101135809A CN A2007100307217 A CNA2007100307217 A CN A2007100307217A CN 200710030721 A CN200710030721 A CN 200710030721A CN 101135809 A CN101135809 A CN 101135809A
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- Light Guides In General And Applications Therefor (AREA)
Abstract
The invention comprises a light guide plate and a spot light source. Said light guide plate comprises an emergence face and a bottom surface; on said bottom surface there are multi grid points. It features the following: said light guide plate has at least one incidence face; the numbers of the spot light source is equal to the numbers of incidence faces; each incidence face has a spot light source.
Description
Technical field
The present invention 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 objective of the invention is prior art is improved, a kind of light supply apparatus of backlight is provided, can effectively reduce the quantity of pointolite, reduce cost, the technical scheme of employing is as follows:
The light supply apparatus of a kind of backlight of the present invention, 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, 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.
The number of the described plane of incidence equals the number at 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.
At least one limit of described polygon light guide plate is an arc, that is to say the limit that is not straight, such shape, though uncommon, also be the variation of on polygonal basis, carrying out.
Described light guide plate be shaped as circle, or oval.This is a kind of comparatively common variation that the polygon light guide plate is carried out on polygonal basis, and arc is all made on each limit of polygon into, and each arc is a circular part, the light guide plate of just formation circle.
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.Technical scheme of the present invention 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 present invention's 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 embodiment of the invention 1;
Fig. 3 is the plan structure synoptic diagram of the embodiment of the invention 1;
Fig. 4 is the perspective view of the embodiment of the invention 2;
Fig. 5 is the plan structure synoptic diagram of the embodiment of the invention 2;
Fig. 6 is the perspective view of the embodiment of the invention 3;
Fig. 7 is the plan structure synoptic diagram of the embodiment of the invention 3.
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 pointolite 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 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.
Embodiment 3
Shown in Fig. 6,7, the light supply apparatus of a kind of backlight in the present embodiment, comprise light guide plate 1 " and 4 pointolites 2 ", light guide plate 1 " comprises exit facet 11 " and bottom surface 12 "; bottom surface 12 " is provided with a plurality of sites 13 "; described light guide plate 1 " is provided with 4 planes of incidence 14 ", and each pointolite 2 " all with a plane of incidence 14 " is corresponding.
" be rectangle, 4 planes of incidence 14 " is located at respectively on 4 angles of rectangle described light guide plate 1.
Described site 13 " being wire from small to large is arranged in order; form many netting twines; each netting twine all with polygon light guide plate 1 " a limit parallel, the bottom surface 12 that each site 13 " is evenly distributed in light guide plate 1 " " on; and big more with the distance an of site 13 " the nearest plane of incidence is to this site 13 ", then this site 13 is " big more.
Described site 13 " xsect be prismatic.
The above is preferred embodiment of the present invention only, is not to be used for limiting practical range of the present invention; Be all equivalents of being done according to claim scope of the present invention, be claim scope of the present invention and cover.
Claims (10)
1. the light supply apparatus of a backlight comprises light guide plate and pointolite, and 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.
2. the light supply apparatus of a kind of backlight as claimed in claim 1, it is characterized in that: described light guide plate is a polygon, each plane of incidence is located at respectively on the polygonal angle.
3. the light supply apparatus of a kind of backlight as claimed in claim 2, it is characterized in that: the number of the described plane of incidence equals the number at polygonal angle.
4. the light supply apparatus of a kind of backlight as claimed in claim 2, it is characterized in that: the number of the described plane of incidence is less than the number at polygonal angle.
5. as the light supply apparatus of claim 3 or 4 described a kind of backlights, it is characterized in that: described site from each plane of incidence to external radiation, the bottom surface that is covered with light guide plate, and big more with the nearest plane of incidence in site to the distance of this site, and then this site is big more.
6. the light supply apparatus of a kind of backlight as claimed in claim 5, it is characterized in that: near the site the described plane of incidence forms many camber lines, 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.
7. as the light supply apparatus of claim 3 or 4 described a kind of backlights, 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.
8. as the light supply apparatus of claim 3 or 4 described a kind of backlights, it is characterized in that: the xsect of described site is for circular, or prismatic, or square.
9. as the light supply apparatus of claim 3 or 4 described a kind of backlights, it is characterized in that: at least one limit of described polygon light guide plate is an arc.
10. the light supply apparatus of a kind of backlight as claimed in claim 9 is characterized in that: described light guide plate be shaped as circle, or oval.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100307217A CN101135809A (en) | 2007-09-28 | 2007-09-28 | Light source device of back light source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100307217A CN101135809A (en) | 2007-09-28 | 2007-09-28 | Light source device of back light source |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101135809A true CN101135809A (en) | 2008-03-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007100307217A Pending CN101135809A (en) | 2007-09-28 | 2007-09-28 | Light source device of back light source |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101135809A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102588847A (en) * | 2011-12-21 | 2012-07-18 | 友达光电股份有限公司 | Backlight module |
| 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 |
| CN103477146A (en) * | 2011-03-02 | 2013-12-25 | 住友化学株式会社 | Backlight device |
| CN104848090A (en) * | 2015-05-19 | 2015-08-19 | 欧浦登（福州）光学有限公司 | Sidelight type glass backlight plate and manufacturing technique |
| CN106195804A (en) * | 2016-08-30 | 2016-12-07 | 昆山市诚泰电气股份有限公司 | The L-type optical texture of planar light source and there is the planar light source of this structure |
-
2007
- 2007-09-28 CN CNA2007100307217A patent/CN101135809A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103477146A (en) * | 2011-03-02 | 2013-12-25 | 住友化学株式会社 | Backlight device |
| CN102588847A (en) * | 2011-12-21 | 2012-07-18 | 友达光电股份有限公司 | Backlight module |
| US8746946B2 (en) | 2011-12-21 | 2014-06-10 | Au Optronics Corporation | Backlight module |
| CN102588847B (en) * | 2011-12-21 | 2014-08-06 | 友达光电股份有限公司 | Backlight module |
| TWI454799B (en) * | 2011-12-21 | 2014-10-01 | Au Optronics Corp | Backlight module |
| 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 |
| CN104848090A (en) * | 2015-05-19 | 2015-08-19 | 欧浦登（福州）光学有限公司 | Sidelight type glass backlight plate and manufacturing technique |
| CN104848090B (en) * | 2015-05-19 | 2017-05-10 | 欧浦登（福州）光学有限公司 | Sidelight type glass backlight plate and manufacturing technique |
| CN106195804A (en) * | 2016-08-30 | 2016-12-07 | 昆山市诚泰电气股份有限公司 | The L-type optical texture of planar light source and there is the planar light source of this structure |
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Open date: 20080305 |