CN201954405U - Light emitting component and backlight module - Google Patents
Light emitting component and backlight module Download PDFInfo
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- CN201954405U CN201954405U CN2011200881044U CN201120088104U CN201954405U CN 201954405 U CN201954405 U CN 201954405U CN 2011200881044 U CN2011200881044 U CN 2011200881044U CN 201120088104 U CN201120088104 U CN 201120088104U CN 201954405 U CN201954405 U CN 201954405U
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- light
- emitting diode
- light emitting
- permeable layer
- white light
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Abstract
The utility model discloses a light emitting component comprising a bearing device, at least one light emitting diode and a colored transmitting layer. The light emitting diode is arranged on the bearing device, is provided with at least one emergent surface and is suitable for emitting first white light; the colored transmitting layer partially covers the emergent surfaces of the light emitting diode and is used for reducing the intensity of part of colored light of the first white light emitted from the light emitting diode to generate second white light; and the chromaticity coordinates of the second white light are different from the chromaticity coordinates of the first white light. In the utility model, the color saturation and the color rendering of the whole light emitting component are improved through partially covering the emergent surfaces of the light emitting diode by the colored transmitting layer.
Description
Technical field
The utility model relates to a kind of luminescence component and light source module, more particularly, relates to a kind of backlight module that uses light emitting diode to carry out luminous luminescence component and adopt this luminescence component.
Background technology
That light emitting diode has is long such as the life-span, volume is little, high shock resistance, low-heat produces and advantage such as low power consumption, therefore has been widely used in indicator or light source in family expenses and the various device.In recent years, light emitting diode is towards multicolour and high brightness development, so its application has extended to large-scale outdoor signboard, traffic signal light and association area.Moreover, because the luminous efficiency of light emitting diode constantly promotes, make white light emitting diode assembly existing trend that replaces traditional fluorescent lamp and white heat bulb gradually on applications such as the backlight of the lamp source of for example scanner, LCD screen or lighting apparatus.In future, light emitting diode even may become the main lighting source that has power saving and environment-friendly function concurrently.
Known common white light emitting diode assembly mainly comprises following several types:
One, uses ruddiness, blue light and green light LED chip simultaneously, to produce white light.Because this kind white light emitting diode assembly need use a plurality of single color LED chips simultaneously, so production cost is higher and driver circuit is also comparatively complicated.
Two, with the blue LED chip yellow fluorescent powder of arranging in pairs or groups, to produce white light.The cost of manufacture of this kind white light emitting diode assembly is cheap relatively.But, common yellow fluorescent powder is a yttrium aluminium garnet fluorescent powder at present, often has the not good problem of color rendering when it is applied to the white light emitting diode assembly.Just, too wide at its frequency spectrum of part of red light wavelength and green wavelength, so its color saturation is also poorer than the light-emitting diode chip for backlight unit of general cathode fluorescent tube or employing three primary colors mixed light, this also just means also relative decline in the chromaticity performance.
In order to improve above-mentioned problem; the known ratio that can adjust the fluorescent material in the white light emitting diode assembly usually; the fluorescent material that for example in yellow fluorescent powder, adds other color; for example be red fluorescence powder or green fluorescent material; see through the primary colors ratio is done different distribution, make the white light emitting diode assembly stronger luminous intensity can be arranged in other particular section.Yet, this mode and the former are by comparison, though it is many to make chromaticity promote, but with present, the life-span of red fluorescence powder and green emitting phosphor is all short than yellow fluorescent powder, therefore after it being added the white light emitting diode assembly, can reduce the life-span of white light emitting diode assembly on the contrary.
Summary of the invention
The utility model provides a kind of luminescence component, has preferable color rendering and high color saturation, and a kind of backlight module is provided, and has above-mentioned luminescence component, has briliancy and colourity performance uniformly.
The utility model provides a kind of luminescence component, and it comprises a carrier, at least one light emitting diode and a colorful light-permeable layer.Light emitting diode is disposed on the carrier and has at least one exiting surface, and wherein light emitting diode is suitable for sending one first white light.Colorful light-permeable layer part is covered on the exiting surface of light emitting diode, wherein produce one second white light after the part coloured light intensity of colorful light-permeable layer reduction first white light that light emitting diode sent, and the chromaticity coordinate of second white light is different from the chromaticity coordinate of first white light.
In an embodiment of the present utility model, the color of above-mentioned colorful light-permeable layer comprises redness or green.
In an embodiment of the present utility model, the material of above-mentioned colorful light-permeable layer comprises dyestuff or coloured paper.
In an embodiment of the present utility model, above-mentioned colorful light-permeable layer is disposed on the relative both sides of exiting surface of light emitting diode.
In an embodiment of the present utility model, above-mentioned carrier is a circuit board.
The utility model also provides a kind of backlight module, and it comprises a housing, a LGP and a luminescence component.LGP is disposed in the housing and has a light incident sides.Luminescence component is disposed on the housing and is positioned at by the light incident sides of LGP.Luminescence component comprises a carrier, at least one light emitting diode and a colorful light-permeable layer.Light emitting diode is disposed on the carrier and between carrier and LGP, and wherein light emitting diode has an exiting surface in the face of the light incident sides of LGP, and light emitting diode is suitable for sending one first white light.Colorful light-permeable layer part is covered on the exiting surface of light emitting diode, wherein produce one second white light after the part coloured light intensity of colorful light-permeable layer reduction first white light that light emitting diode sent, and the chromaticity coordinate of second white light is different from the chromaticity coordinate of first white light.
In an embodiment of the present utility model, the color of above-mentioned colorful light-permeable layer comprises redness or green.
In an embodiment of the present utility model, the material of above-mentioned colorful light-permeable layer comprises dyestuff or coloured paper.
In an embodiment of the present utility model, above-mentioned colorful light-permeable layer is disposed on the relative both sides of exiting surface of light emitting diode.
In an embodiment of the present utility model, above-mentioned carrier is a circuit board.
Based on technique scheme, the utility model is by the local exiting surface that covers light emitting diode of colorful light-permeable layer, improves the color saturation and the color rendering of whole luminescence component.
For above-mentioned feature and advantage of the present utility model can be become apparent, embodiment cited below particularly, and cooperate appended graphic being described in detail below.
Description of drawings
Fig. 1 is the generalized section of a kind of backlight module of an embodiment of the present utility model.
Fig. 2 A is the local schematic top plan view of the luminescence component of Fig. 1.
Fig. 2 B is the local schematic top plan view of a kind of luminescence component of an embodiment of the present utility model.
Fig. 2 C is the local schematic top plan view of a kind of luminescence component of another embodiment of the present utility model.
Among the figure:
100, backlight module;
110, housing;
120, LGP;
122, light incident sides;
130a, 130b, 130c, luminescence component;
132, carrier;
134a, 134b, 134c, light emitting diode;
135a, 135b, 135c, exiting surface;
136a, 136b, 136c, the colorful light-permeable layer;
140, reflector plate.
The specific embodiment
Fig. 1 is the generalized section of a kind of backlight module of an embodiment of the present utility model.Fig. 2 A is the local schematic top plan view of the luminescence component of Fig. 1.Please also refer to Fig. 1 and Fig. 2 A, in the present embodiment, backlight module 100 comprises a housing 110, a LGP 120 and a luminescence component 130a, and wherein LGP 120 is disposed in the housing 110 and has a light incident sides 122.In addition, backlight module 100 for example is a side incident type backlight module.
Specifically, luminescence component 130 is disposed on the housing 110 and is positioned at light incident sides 122 sides of LGP 120, and wherein luminescence component 130a comprises a carrier 132, at least one light emitting diode 134a and a colorful light-permeable layer 136a.In this, carrier 132 for example is a circuit board.Light emitting diode 134a is disposed on the carrier 132 and between carrier 132 and LGP 120, wherein light emitting diode 134a has an exiting surface 135a in the face of the light incident sides 122 of LGP 120, and light emitting diode 134a is suitable for sending one first white light.In the present embodiment, light emitting diode 134 for example is the formed white light emitting diode assembly of a blue LED chip (not illustrating) collocation one yellow fluorescent powder (not illustrating).In addition, the backlight module 100 of present embodiment more can have a reflector plate 140, wherein reflector plate 140 is disposed between housing 110 and the LGP 120 and has the characteristic of high reflectance, so reflector plate 140 can reflect the light that enters in the LGP 120, and then can promote the utilization ratio of light source (meaning is the light that luminescence component 130a is produced).
The colorful light-permeable layer 136a part of present embodiment is covered on the exiting surface 135a of light emitting diode 134a, wherein colorful light-permeable layer 136a cuts down after the part coloured light intensity of first white light that light emitting diode 134a sent and produces one second white light, and the chromaticity coordinate of second white light is different from the chromaticity coordinate of first white light.In the present embodiment, the color of colorful light-permeable layer 136a for example is red or green, and the material of colorful light-permeable layer 136a for example is dyestuff or coloured paper.
For instance, when if colorful light-permeable layer 136a is an orchil layer, in second white light that produces after the part coloured light intensity (for example being green intensity and blue light strength) of first white light that colorful light-permeable layer 136a reduction light emitting diode 134a is sent, wherein the energy of the red light wavelength in second white light slightly reduces with respect to the energy of the red light wavelength in first white light, but the energy of blue light wavelength in second white light and green wavelength is more with respect to the energy reduction of blue light wavelength in first white light and green wavelength.That is to say, the exiting surface 135a that passes through the local covering of colorful light-permeable layer 136a light emitting diode 134a of present embodiment cuts down the energy of other coloured light wavelength (for example being blue light and green glow) beyond the red light wavelength, improves color rendering and the color saturation of whole luminescence component 130a thus.In like manner, when if colorful light-permeable layer 136a is a green colouring material layer, then the energy of the green wavelength in second white light slightly reduces with respect to the energy of the green wavelength in first white light, but it is more that the blue light wavelength in second white light and the energy of red light wavelength reduce with respect to the energy of blue light wavelength in first white light and red light wavelength, makes the better lifting of colour purity of green light band.In addition, except the configuration of colorful light-permeable layer 136a can influence the energy of specific wavelength (for example being red light wavelength, blue light wavelength or green wavelength), the depth of the dyestuff (or coloured paper) of colorful light-permeable layer 136a (meaning is the purity of color) with apply (or attaching) thickness and also can influence the energy of specific wavelength.In other words, the depth and the thickness of the dyestuff (or coloured paper) that the performance of the briliancy of luminescence component 130a and colourity can be by changing colorful light-permeable layer 136a change.
In brief, because the luminescence component 130a of present embodiment has colorful light-permeable layer 136a, and the only local exiting surface 135a that covers light emitting diode 134a of this colorful light-permeable layer 136a.Therefore, when the part coloured light intensity of first white light that light emitting diode 134a sent was produced second white light by colorful light-permeable layer 136a reduction, second white light can have preferable color rendering and high color saturation compared to first white light.In addition, backlight module 100 its display qualities of the luminescence component 130a of application present embodiment also can promote and have briliancy and colourity performance uniformly.
What deserves to be mentioned is, the utility model does not limit allocation ratio and the relative position of colorful light-permeable layer 136a with respect to the exiting surface 135a of light emitting diode 134a, though the colorful light-permeable layer 136a that reaches mentioned herein covers the area of exiting surface 135a less than 1/2 of exiting surface 135a area.But, in other example, please refer to Fig. 2 B, the area that the colorful light-permeable layer 136a of luminescence component 130b covers the exiting surface 135b of light emitting diode 134b is slightly larger than or equals 1/2 of exiting surface 135b area; Or, please refer to Fig. 2 C, the colorful light-permeable layer 136c of luminescence component 130c is disposed on the relative both sides of exiting surface 135c of light emitting diode 134c.In brief, the allocation ratio of the colorful light-permeable layer 136a of Fig. 2 A and the exiting surface 135a of light emitting diode 134a and relative position be only for illustrating, and not as limit.
In addition, in the embodiment that other does not illustrate, light emitting diode also can have two exiting surfaces respect to one another, and colorful light-permeable layer part is covered on two exiting surfaces respect to one another of this light emitting diode, this for those skilled in the art when can be with reference to the explanation of previous embodiment, according to actual demand, and select aforementioned components for use, to reach required technique effect.
In sum, the utility model is by the local exiting surface that covers light emitting diode of colorful light-permeable layer, improve the color saturation and the color rendering of whole luminescence component, briliancy shows with colourity and its display quality of backlight module of using luminescence component of the present utility model can promote and have uniformly.
But the above-mentioned specific embodiment is exemplary, is to be the restriction that this patent is comprised scope in order better to make those skilled in the art can understand this patent, can not to be interpreted as; So long as according to spirit that this patent discloses done anyly be equal to change or modify, all fall into the scope that this patent comprises.
Claims (10)
1. luminescence component is characterized in that: comprising:
One carrier;
At least one light emitting diode is disposed on this carrier and has at least one exiting surface, and wherein said light emitting diode is suitable for sending one first white light; And
One colorful light-permeable layer, the part is covered on the described exiting surface of described light emitting diode, wherein this colorful light-permeable layer is cut down after the part coloured light intensity of described first white light that described light emitting diode sends and is produced one second white light, and the chromaticity coordinate of this second white light is different from the chromaticity coordinate of this first white light.
2. luminescence component according to claim 1 is characterized in that: the color of described colorful light-permeable layer comprises redness or green.
3. luminescence component according to claim 1 is characterized in that: the material of described colorful light-permeable layer comprises dyestuff or coloured paper.
4. luminescence component according to claim 1 is characterized in that: described colorful light-permeable layer is disposed on the relative both sides of described exiting surface of described light emitting diode.
5. luminescence component according to claim 1 is characterized in that: described carrier is a circuit board.
6. backlight module is characterized in that: comprising:
One housing;
One LGP is disposed in this housing and has a light incident sides; And
One luminescence component is disposed on the trifling thing housing and is positioned at by the light incident sides of described LGP, and this luminescence component comprises:
One carrier;
At least one light emitting diode is disposed on this carrier and between this carrier and this LGP, and wherein this light emitting diode has an exiting surface in the face of the described light incident sides of described LGP, and this light emitting diode is suitable for sending one first white light; And
One colorful light-permeable layer, the part is covered on the described exiting surface of this light emitting diode, wherein this colorful light-permeable layer is cut down after the part coloured light intensity of described first white light that described light emitting diode sends and is produced one second white light, and the chromaticity coordinate of this second white light is different from the chromaticity coordinate of described first white light.
7. backlight module according to claim 6 is characterized in that: the color of described colorful light-permeable layer comprises redness or green.
8. backlight module according to claim 6 is characterized in that: the material of described colorful light-permeable layer comprises dyestuff or coloured paper.
9. backlight module according to claim 6 is characterized in that: described colorful light-permeable layer is disposed on the relative both sides of described exiting surface of described light emitting diode.
10. backlight module according to claim 6 is characterized in that: described carrier is a circuit board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200881044U CN201954405U (en) | 2011-03-30 | 2011-03-30 | Light emitting component and backlight module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200881044U CN201954405U (en) | 2011-03-30 | 2011-03-30 | Light emitting component and backlight module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201954405U true CN201954405U (en) | 2011-08-31 |
Family
ID=44498515
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200881044U Expired - Fee Related CN201954405U (en) | 2011-03-30 | 2011-03-30 | Light emitting component and backlight module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201954405U (en) |
-
2011
- 2011-03-30 CN CN2011200881044U patent/CN201954405U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110831 Termination date: 20170330 |
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| CF01 | Termination of patent right due to non-payment of annual fee |