CN103712166A - Light guide bar for LCD - Google Patents
Light guide bar for LCD Download PDFInfo
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- CN103712166A CN103712166A CN201410004257.4A CN201410004257A CN103712166A CN 103712166 A CN103712166 A CN 103712166A CN 201410004257 A CN201410004257 A CN 201410004257A CN 103712166 A CN103712166 A CN 103712166A
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- strip
- light
- face
- liquid crystal
- refractive power
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Abstract
The invention discloses a light guide bar for an LCD. The light guide bar for the LCD comprises the light guide bar, an LED light source and a light refraction bar arranged on the light guide bar. The light guide bar is composed of a light guide bar body and a plurality of convex points, the light guide bar body comprises a body top face, a body bottom face, a left side face and a right side face, the convex points are arranged on the body top face, and the body bottom face, the left side face and the right side face are smooth planes with the total reflection function. The LED light source is arranged at the end of the light guide bar body. The light refraction bar is arranged above the body top face, the convex points are placed between the body top face and the light refraction bar. The structure is used, only one or few LED light sources are placed at the end of the light guide bar, a single lens is of no need, illuminating of the LCD is achieved, meanwhile, the evenness of LED liquid crystal backlight and backlight are added, and cost is lowered. The convex points enable the light emitted by the LED light source to be refracted and then to form an even light-emitting face.
Description
Technical field
The present invention relates to light emitting diode (LED, LightEmittingDiode) lens technologies field, be specifically related to a kind of liquid crystal display light-strip.
Background technology
LED light source, due to the remarkable advantage of its energy-conserving and environment-protective, has replaced CCFL cold-cathode tube completely as the back light of liquid crystal display.But the some characteristics of luminescence due to LED light source self, causes the range of exposures of single LEDs too small, so the LED light source secondary optics device of need to arranging in pairs or groups, by refraction, increase the light angle of divergence, in order to expand the range of exposures on screen backlight.Market secondary optical lens used is generally single circular lens at present, a corresponding LEDs light source of lens.Single lens manufacture difficulty of right above-mentioned circle is high, and single the lens numbers that liquid crystal display need to use is more, and cost is relatively high.
Summary of the invention
The object of the invention is to disclose a kind of liquid crystal display light-strip, having solved available liquid crystal display needs more single lens, the problem that cost is high.
For achieving the above object, the present invention adopts following technical scheme:
A liquid crystal display light-strip, comprises light-strip, LED light source and is located at the refractive power bar on light-strip; Light-strip consists of light-strip body and several salient points, light-strip body comprises body end face and body bottom surface, several salient points are located at body end face, body bottom surface, left surface and right flank, several salient points are located at body end face, and body bottom surface, left surface and right flank are the smooth flat with total reflection effect; LED light source is located at the end of light-strip body; Refractive power bar is located at body top face, and salient point is between body end face and refractive power bar.
Further, described salient point is circular salient point, and several salient points are and are regularly distributed on described body end face.
Further, described several salient points are rectangular array layout.
Further, little and thin near salient point described in a side of described LED light source, relatively large and close near described light-strip body middle section position salient point, be gradual distribution.
Further, the cross section of described light-strip body is rectangle.
Further, the cross section of described refractive power bar is trapezium structure wide at the top and narrow at the bottom, and refractive power bar bottom surface covers on described salient point end face, and refractive power bar end face is Fresnel toothed surface.
Further, described Fresnel toothed surface is some fine and closely woven tooth-shape structures discharged to outer salient point.
Further, with the axis boundary of described refractive power bar, the profile of tooth of described tooth-shape structure is extended towards the oblique upper of both sides, axis respectively.
Further, described light-strip and described refractive power bar are the structure that transparent resin material is made.
Compared with prior art, beneficial effect of the present invention:
The present invention adopts above structure, only needs one or less LED light source to be placed on light-strip end, without single lens, realizes liquid crystal display illumination, increases the uniformity of LED LCD backlight and backlight simultaneously, reduces costs; Salient point can make that LED light source institute is luminous forms a uniform light-emitting area after superrefraction again, and then through Fresnel toothed surface, refraction can diffuse to more wide-angle; And the structure of Fresnel toothed surface is that divergence of beam is arrived to the more optimum structure of wide-angle in the present invention.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, below the accompanying drawing of required use during embodiment is described is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the schematic perspective view of light-strip embodiment for a kind of liquid crystal display of the present invention;
Fig. 2 is the front elevational schematic of Fig. 1;
Fig. 3 is that schematic diagram is looked on the right side of Fig. 2;
Fig. 4 is the schematic top plan view of light-strip in Fig. 1;
In figure, 1-light-strip; 11-light-strip body; 111-body end face; 112-body bottom surface; The cross section of 113-light-strip body; 114-left surface; 115-right flank; 12-salient point; 121-salient point end face; 2-LED light source; 3-refractive power bar; The cross section of 31-refractive power bar; 32-refractive power bar bottom surface; 33-refractive power bar end face.
The specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.
A kind of liquid crystal display light-strip of embodiment, comprises light-strip 1, LED light source 2 and is located at the refractive power bar 3 on light-strip 1 as shown in Figures 1 to 4; Light-strip 1 consists of light-strip body 11 and several salient points 12, light-strip body 11 comprises body end face 111, body bottom surface 112, left surface 114 and right flank 115, several salient points 12 are located at body end face 111, and body bottom surface 112, left surface 114 and right flank 115 are for having the smooth flat of total reflection effect; LED light source 2 is located at the end of light-strip body 1; Refractive power bar 3 is located at body end face 111 tops, and salient point 12 is between body end face 111 and refractive power bar 3.
Salient point 12 is circular salient point, and several salient points are and are regularly distributed on described body end face.In the present embodiment, several salient points 12 are rectangular array layout; The regularity of distribution is for being uniformly distributed, or little and thin near a side salient point 12 of LED light source 2, close light-strip body 11 middle section position salient points are relatively large and close, are gradual distribution.The cross section 113 of light-strip body is rectangle.
The cross section 31 of refractive power bar is trapezium structure wide at the top and narrow at the bottom, and refractive power bar bottom surface 32 covers on salient point end face 121, and refractive power bar end face 33 is Fresnel toothed surface.Fresnel toothed surface is some fine and closely woven tooth-shape structures discharged to outer salient point.With the axis M axle boundary of refractive power bar 3, the profile of tooth of tooth-shape structure is extended towards the oblique upper of M axle both sides respectively, and above structure is that divergence of beam is arrived to the more optimum structure of wide-angle.
The structure that light-strip 1 and refractive power bar 3 are made for transparent resin material, body bottom surface 112 is processed and is formed fully reflecting surface through frosting technology.
A kind of liquid crystal display of the present embodiment uses other structure of light-strip referring to prior art.
As further illustrating the present embodiment, its operation principle is now described: the light that LED light source 2 sends is injected light-strip 1, through 112 total reflections of body bottom surface, be transmitted into the distant place of light-strip 1, light makes light uniform emission go out light-strip 1 through the control of the salient point 12 of body end face 111 simultaneously, pass through again the refraction of the Fresnel toothed surface of refractive power bar 3, expand the angle of divergence.Circular salient point 12 can make that 2 of LED light sources are luminous 32 forms a uniform light-emitting area in refractive power bar bottom surface after superrefraction.Light can diffuse to more wide-angle after the refraction of Fresnel toothed surface.
The present invention is not limited to above-mentioned embodiment, if various changes of the present invention or modification are not departed to the spirit and scope of the present invention, if within these changes and modification belong to claim of the present invention and equivalent technologies scope, the present invention is also intended to comprise these changes and modification.
Claims (9)
1. a liquid crystal display light-strip, is characterized in that: comprise light-strip, LED light source and be located at the refractive power bar on light-strip; Light-strip consists of light-strip body and several salient points, and light-strip body comprises body end face, body bottom surface, left surface and right flank, and several salient points are located at body end face, and body bottom surface, left surface and right flank are the smooth flat with total reflection effect; LED light source is located at the end of light-strip body; Refractive power bar is located at body top face, and salient point is between body end face and refractive power bar.
2. a kind of liquid crystal display light-strip as claimed in claim 1, is characterized in that: described salient point is circular salient point, and several salient points are and are regularly distributed on described body end face.
3. a kind of liquid crystal display light-strip as claimed in claim 2, is characterized in that: described several salient points are rectangular array and arrange.
4. a kind of liquid crystal display light-strip as described in claim 2 or 3 any one, is characterized in that: little and thin near salient point described in a side of described LED light source, close described light-strip body middle section position salient point is relatively large and close, is gradual distribution.
5. a kind of liquid crystal display light-strip as claimed in claim 1, is characterized in that: the cross section of described light-strip body is rectangle.
6. a kind of liquid crystal display light-strip as described in claim 1,2,3 or 5, is characterized in that: the cross section of described refractive power bar is trapezium structure wide at the top and narrow at the bottom, and refractive power bar bottom surface covers on described salient point end face, and refractive power bar end face is Fresnel toothed surface.
7. a kind of liquid crystal display light-strip as claimed in claim 6, is characterized in that: described Fresnel toothed surface is some fine and closely woven tooth-shape structures discharged to outer salient point.
8. a kind of liquid crystal display light-strip as claimed in claim 7, is characterized in that: with the axis boundary of described refractive power bar, the profile of tooth of described tooth-shape structure is extended towards the oblique upper of both sides, axis respectively.
9. a kind of liquid crystal display light-strip as claimed in claim 1, is characterized in that: described light-strip and described refractive power bar are the structure that transparent resin material is made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410004257.4A CN103712166A (en) | 2014-01-03 | 2014-01-03 | Light guide bar for LCD |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410004257.4A CN103712166A (en) | 2014-01-03 | 2014-01-03 | Light guide bar for LCD |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103712166A true CN103712166A (en) | 2014-04-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410004257.4A Pending CN103712166A (en) | 2014-01-03 | 2014-01-03 | Light guide bar for LCD |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103712166A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102401931A (en) * | 2011-09-07 | 2012-04-04 | 友达光电股份有限公司 | Light guide plate, backlight module and display device |
| CN103105641A (en) * | 2013-02-26 | 2013-05-15 | 佘晓峰 | Composite light guide plate and production method thereof |
-
2014
- 2014-01-03 CN CN201410004257.4A patent/CN103712166A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102401931A (en) * | 2011-09-07 | 2012-04-04 | 友达光电股份有限公司 | Light guide plate, backlight module and display device |
| CN103105641A (en) * | 2013-02-26 | 2013-05-15 | 佘晓峰 | Composite light guide plate and production method thereof |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140409 |