CN1963633A - Tricolor LED mixed color apparatus used for direct lighting LED backlighting source - Google Patents
Tricolor LED mixed color apparatus used for direct lighting LED backlighting source Download PDFInfo
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- CN1963633A CN1963633A CNA2006101238559A CN200610123855A CN1963633A CN 1963633 A CN1963633 A CN 1963633A CN A2006101238559 A CNA2006101238559 A CN A2006101238559A CN 200610123855 A CN200610123855 A CN 200610123855A CN 1963633 A CN1963633 A CN 1963633A
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Abstract
This invention discloses one three base color LED mixture device for downward LED aphototropism source, which comprises underlay, three color LED separately fixed on underlay, wherein, the invention is characterized by the following: the under surface is set with cover coated with reflection materials as network point distribution.
Description
Technical field
The present invention relates to the Tricolor LED mixed color apparatus field of the direct LED backlight of a kind of LCD of being used for, more particularly relate to a kind of Tricolor LED mixed color apparatus that is used as the light source of backlight assembly.
Background technology
Generally speaking, LCD (LCD) is an active optical component, it self can not be luminous, therefore utilize the backlight assembly display image that is installed in LCD backboard face, have competitive power in order to satisfy miniaturization and lightweight trend to guarantee product, developed backlight assembly recently with various structures.Cold-cathode fluorescence lamp (CCFL) is the conventional light source that comparatively is usually used in above-mentioned backlight assembly now.Use the backlight arrangement of cold-cathode fluorescence lamp, roughly be divided into this two class of direct-type backlight source apparatus that side at light conductor has disposed the side-light type back light device of cold-cathode fluorescence lamp and has been set up in parallel a plurality of cold-cathode fluorescence lamps in the bottom of LCD panel.The side-light type back light device, have can constituent ratio than the advantage of compact structure, still, have the low such shortcoming of light utilization ratio, and a light utilization ratio height of direct-type backlight source apparatus, still, it is big that the thickness of backlight arrangement becomes.In order to satisfy miniaturization and lightweight trend, utilizing the LED with high brightness to replace cold-cathode fluorescence lamp is a developing direction.It is generally acknowledged, the light emitting diode that is used as the light source of backlight arrangement finally is white light will be shone on the display board, therefore use the light emitting diode that sends white light, but because the white light of white light-emitting diode is to obtain from the optical excitation fluorescent powder that blue LED, ultraviolet light-emitting diodes are sent, therefore exist color rendition poor, color reprodubility scope such problem that narrows down.For redness, green, the light emitting diode of blue three coloured light, it is compared with the light emitting diode that sends white light, can obtain the scope of wideer color reprodubility, but also can freely change the colourity of backlight by the drive current of regulating three-primary color LED, in order to encapsulate the ruddiness that produces by mixing LED, green glow and blue light, produce white light, the Tricolor LED mixed color apparatus that needs a kind of novelty, encapsulate and be used to comprise the backlight assembly patent of the LCD of LED encapsulation as the LED of Samsung Electro-Mechanics Co., Ltd, its method is to add the top-surface camber encapsulating structure to make the primary emergent light generation of LED total reflection on LED, and in interpolation site, bottom, scattered beam mixes light.But this device is limited to curve form, makes the size of whole encapsulating products be restricted, simultaneously, and to arranging and quantity also is subjected to the restriction of curved surface the lamp position.
Summary of the invention
Purpose of the present invention is exactly a kind of effective control light distribution that provides for the deficiency that solves prior art and has increased light path, has the Tricolor LED mixed color apparatus that is used for direct LED backlight of the white light of uniform luminance and color with generation.
The present invention adopts following technical solution to realize above-mentioned purpose: a kind of Tricolor LED mixed color apparatus that is used for direct LED backlight, comprise substrate, three-primary color LED, this three-primary color LED is separated from each other and is installed on the substrate, it is characterized in that: the surface of the substrate of the described LED of comprising is provided with outer cover, and the surface of outer cover is crossed reflectorized material and made network point distribution.
As further specifying of such scheme, described LED concentrate on case for packaging under, the reflectorized material network point distribution of outer cover is according to LED arrangement mode and light distribution, gradual change around the mediad.
The outer cover that is provided with on the described substrate surface is a spherical cap structure, the not light absorbing reflectorized material of upper surface coating of substrate.
The outer cover that is provided with on the described substrate surface is a cube structure, and outer cover adopts light transmissive material to make.
LED on the described liner plate is the three-primary color LED that sends complementary colorama more than a pair of or a pair of respectively.
The beneficial effect that the present invention adopts above-mentioned technical solution to reach is: the outer cover on surface that the present invention includes the substrate of LED is the high material of transmittance, the not light absorbing reflectorized material of its surface plating, and do the site and be provided with, it distributes according to LED arrangement mode and light distribution, from mediad gradual change all around, can control the intensity distributions of emergent light like this, plate reflective membrane, make light between film and bottom surface, come back reflective, increase light path, improve the colour mixture effect, in addition, since be to be the unit with the LED color-mixture device, can be according to shape and the size of LCD, the encapsulation quantity of adjusting LED.
Description of drawings
Fig. 1 a is the schematic top plan view according to color-mixture device of the present invention;
Fig. 1 b is the schematic side view according to color-mixture device of the present invention;
Fig. 1 c is the schematic perspective view according to color-mixture device of the present invention;
Fig. 2 is the unitized construction synoptic diagram that this ball crown type color-mixture device is used for the direct-type backlight source apparatus;
Fig. 3 a is three-color light-emitting diode LED (R, G, linear array synoptic diagram B);
Fig. 3 b is three-color light-emitting diode LED (R, G, square arrangement synoptic diagram B);
The structural representation of Fig. 4 side of being body color-mixture device.
Description of reference numerals: 1, outer cover 21, reflective material 22, site 23, substrate 24, three-primary color LED 25, reflective material 31, substrate 32, color-mixture device 50, color-mixture device 51, reflectorized material 52, site 53, substrate
Embodiment
Embodiment 1
As Fig. 1, shown in Figure 2, the present invention is used for the Tricolor LED mixed color apparatus of direct LED backlight, comprise substrate 23, three-primary color LED 24, three-primary color LED is separated from each other and is installed on the substrate, the surface of substrate is provided with outer cover 1, and this outer cover is a color-mixture device spherical crown molding part, in its surface, plate the not light absorbing reflective material 21 of one deck, reflective material 21 is that the regularity of distribution with site 22 plates, and the site is to be provided with according to the distribution of the arrangement of LED and light intensity, the LED of the surface distributed of substrate concentrate on the encapsulation camera lens under, putting in order of described three-primary color LED has no particular limits, LEDR, LEDG, LEDB are that linearity is arranged or square arranging, its luminescent center is right against the optical center, red (R), the ratio of green (G) and blue (B) is 1: 2: 1, its luminous intensity, for the spherical crown color-mixture device, for maximum near the center of circle, reduce to peripheral direction then, for the setting of site, mainly big with central reflectorized material site, according to light intensity to around diminishing scheme.Simultaneously, on substrate 23, what plate is the not light absorbing reflective material 25 of one deck, and like this, the light that light source led sends after the reflecting material matter reflection of the network point distribution of passing through upper surface, propagates on the following substrate.Because substrate has one deck reflective material 25, its light is upwards penetrated after emission again, light after repeatedly coming back reflective from the printing opacity outgoing.Use color-mixture device of the present invention, can increase the light path value of light, can strengthen the mixed light effect like this, make the white light of output even.
During use, this spherical color-mixture device is used for the unitized construction of direct-type backlight source apparatus, a plurality of unit combination are placed on the substrate 31, LED (A) array is spaced a certain distance, lay color-mixture device 32, comprise redness in each unit LED (A) array, green with blue LED (R, G, B).
Embodiment 2
As shown in Figure 4, for the outer shape of color-mixture device,, can also make cube structure except being the spherical cap structure.Color-mixture device 50 for cube structure, its upper surface plates the not light absorbing reflectorized material 51 of one deck, and distributing with site 52 at reflectorized material 51 plates, LED be put in color-mixture device under, be placed on the substrate 53, on substrate 53, plate not light absorbing reflecting material.
Claims (6)
1, a kind of Tricolor LED mixed color apparatus that is used for direct LED backlight, comprise substrate, three-primary color LED, this three-primary color LED is separated from each other and is installed on the substrate, it is characterized in that: the surface of the substrate of the described LED of comprising is provided with outer cover, and the surface of outer cover is crossed reflectorized material and made network point distribution.
2, the Tricolor LED mixed color apparatus that is used for direct LED backlight according to claim 1, it is characterized in that: described LED concentrate on case for packaging under, the reflectorized material network point distribution of outer cover is according to LED arrangement mode and light distribution, from mediad gradual change all around.
3, the Tricolor LED mixed color apparatus that is used for direct LED backlight according to claim 1 is characterized in that: the outer cover that is provided with on the described substrate surface is a spherical cap structure, the not light absorbing reflectorized material of upper surface coating of substrate.
4, according to claim 1 or the 3 described Tricolor LED mixed color apparatus that are used for direct LED backlight, it is characterized in that: the outer cover that is provided with on the described substrate surface is a cube structure.
5, according to claim 1, the 2 or 3 described Tricolor LED mixed color apparatus that are used for direct LED backlight, it is characterized in that: described outer cover adopts light transmissive material to make.
6, the Tricolor LED mixed color apparatus that is used for direct LED backlight according to claim 1 is characterized in that: the LED on the described liner plate is a pair of or a pair of above three-primary color LED.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006101238559A CN1963633A (en) | 2006-11-29 | 2006-11-29 | Tricolor LED mixed color apparatus used for direct lighting LED backlighting source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006101238559A CN1963633A (en) | 2006-11-29 | 2006-11-29 | Tricolor LED mixed color apparatus used for direct lighting LED backlighting source |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1963633A true CN1963633A (en) | 2007-05-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2006101238559A Pending CN1963633A (en) | 2006-11-29 | 2006-11-29 | Tricolor LED mixed color apparatus used for direct lighting LED backlighting source |
Country Status (1)
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| CN (1) | CN1963633A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102287717A (en) * | 2011-08-25 | 2011-12-21 | 上海交通大学 | Back light system with wave guide structure |
-
2006
- 2006-11-29 CN CNA2006101238559A patent/CN1963633A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102287717A (en) * | 2011-08-25 | 2011-12-21 | 上海交通大学 | Back light system with wave guide structure |
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