CN209981261U - Pattern substrate and chip capable of adjusting light-emitting angle - Google Patents
Pattern substrate and chip capable of adjusting light-emitting angle Download PDFInfo
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- CN209981261U CN209981261U CN201920979501.7U CN201920979501U CN209981261U CN 209981261 U CN209981261 U CN 209981261U CN 201920979501 U CN201920979501 U CN 201920979501U CN 209981261 U CN209981261 U CN 209981261U
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Abstract
The utility model discloses a the utility model provides a pattern substrate, chip of adjustable luminous angle, pattern substrate has the arch of a plurality of array arrangements, the arch includes the protruding unit of first protruding unit and second, the protruding unit of first protruding unit and second is located the both sides in axle center, first protruding unit is equipped with a first inclined plane, the protruding unit of second is equipped with a second inclined plane, the incline direction on first inclined plane is the same or opposite with the incline direction on second inclined plane. If the inclination angles of the first inclined plane and the second inclined plane are the same, the light-emitting angle of the chip is the same as the inclination angles of the first inclined plane and the second inclined plane. The utility model discloses the accessible sets up the inclination on first inclined plane and second inclined plane and adjusts the light-emitting angle of chip.
Description
Technical Field
The utility model relates to a light emitting diode technical field especially relates to a pattern substrate, chip of adjustable luminous angle.
Background
An LED (Light Emitting Diode) is a semiconductor device that emits Light by using energy released during carrier recombination, and an LED chip has many advantages of low power consumption, pure chromaticity, long service life, small volume, fast response time, energy saving, environmental protection, and the like.
As product applications expand, the specific requirements for LED chips also increase relatively. Especially in the requirement of hair angles, the table top is also lifted. For example, flashlights, and display screens require a small angle of illumination, and for example, backlight products require a large angle of illumination. Even in the latest naked-eye 3D design, the brightness of the light which is deflected to one angle is large, and different requirements are extremely complex.
The conventional LED chip is mainly used for secondary optics through packaging, or the light-emitting angle is adjusted by changing the chip design, so that the manufacturing process of the chip needs to be changed, the operation is complex, and the large-scale production is inconvenient.
Disclosure of Invention
The technical problem to be solved in the utility model is to provide a pattern substrate, chip that can adjust luminous angle, can adjust luminous angle as required.
In order to solve the technical problem, the utility model provides an adjustable luminous angle's pattern substrate, pattern substrate has the arch of a plurality of array arrangements, the arch is made by the printing opacity material that the refracting index is less than 2.3, the arch includes the protruding unit of first protruding unit and second, the protruding unit of first protruding unit and second is located the both sides in axle center, first protruding unit is equipped with a first inclined plane, the protruding unit of second is equipped with a second inclined plane, the incline direction on first inclined plane is the same or opposite with the incline direction on second inclined plane.
As an improvement of the above scheme, the bump further includes a third bump unit, the third bump unit is located between the first bump unit and the second bump unit, and the third bump unit refracts light emitted by the active layer toward the axis direction of the chip.
As an improvement of the above scheme, the first protrusion unit and the second protrusion unit are in the shape of a right triangle or a right trapezoid, and the third protrusion unit is in the shape of a rectangle.
As an improvement of the scheme, the size of the bulges is 0.5-5 μm, the spacing is 0.1-0.5 μm, and the height is 0.5-3 μm.
As an improvement of the scheme, the material of the patterned substrate is sapphire, silicon nitride, gallium nitride or aluminum nitride.
As an improvement of the scheme, the material of the bulge is Al2O3、Ti2O5、TiO2Or SiO2。
As an improvement of the above, the projections are formed by IPC or RIE etching.
Correspondingly, the invention also provides a chip comprising the pattern substrate with the adjustable light-emitting angle.
Implement the utility model discloses, following beneficial effect has:
the utility model provides an adjustable luminous angle's pattern substrate, pattern substrate has the arch of a plurality of array arrangements, the arch is made by the printing opacity material that the refracting index is less than 2.3, the arch includes the protruding unit of first protruding unit and second, the protruding unit of first protruding unit and second is located the both sides in axle center, first protruding unit is equipped with a first inclined plane, the protruding unit of second is equipped with a second inclined plane, the incline direction on first inclined plane is the same or opposite with the incline direction on second inclined plane. If the inclination angles of the first inclined plane and the second inclined plane are the same, the light-emitting angle of the chip is the same as the inclination angles of the first inclined plane and the second inclined plane. The utility model discloses the accessible sets up the inclination on first inclined plane and second inclined plane and adjusts the light-emitting angle of chip.
Specifically, if the inclination angles of the first inclined plane and the second inclined plane are the same, the light emitting angle of the chip is the same as the inclination angles of the first inclined plane and the second inclined plane; if the inclination angles of the first inclined plane and the second inclined plane are opposite, the light emitted from the chip can be concentrated or emitted.
Drawings
FIG. 1 is a schematic view showing the structure of an embodiment 1 of a patterned substrate according to the present invention;
FIG. 2 is a schematic view showing light emission from example 1 of the patterned substrate of the present invention;
FIG. 3 is a schematic optical diagram of example 2 of a patterned substrate according to the present invention;
FIG. 4 is a schematic optical diagram of example 3 of a patterned substrate according to the present invention;
FIG. 5 is a schematic optical diagram of an embodiment 4 of the patterned substrate of the present invention;
FIG. 6 is a schematic optical diagram of an embodiment 5 of the patterned substrate of the present invention;
fig. 7 is a schematic light diagram of example 6 of a patterned substrate according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1, the present invention provides a pair of pattern substrate with adjustable light-emitting angle, pattern substrate 10 has a plurality of protrusions arranged in an array, the protrusions are made of a light-transmitting material with a refractive index smaller than 2.3, the protrusions include a first protrusion unit 21 and a second protrusion unit 22, first protrusion unit 21 and second protrusion unit 22 are located on two sides of an axis, first protrusion unit 21 is provided with a first inclined plane, and second protrusion unit 22 is provided with a second inclined plane.
According to the requirements of different light-emitting angles, the inclination direction of the first inclined plane is the same as or opposite to that of the second inclined plane.
If the inclination angles of the first inclined plane and the second inclined plane are the same, the light-emitting angle of the chip is the same as the inclination angles of the first inclined plane and the second inclined plane. Specifically, the inclination angle of the first inclined plane and the second inclined plane is 0-90 degrees or 90-180 degrees.
If the inclination angles of the first inclined plane and the second inclined plane are opposite, the light emitted from the chip can be concentrated or emitted.
According to the requirements of different light-emitting angles, the protrusion further comprises a third protrusion unit, the third protrusion unit is located between the first protrusion unit and the second protrusion unit, and the third protrusion unit refracts the light emitted by the active layer towards the axis direction of the chip.
Specifically, the first protrusion unit and the second protrusion unit are in the shape of a right triangle or a right trapezoid, and the third protrusion unit is now in the shape of a rectangle.
The utility model discloses in, bellied size, interval and height play important effect to the light-emitting angle of chip. Preferably, the protrusions have a size of 0.5 to 5 μm, a pitch of 0.1 to 0.5 μm, and a height of 0.5 to 3 μm.
Since the larger the height of the protrusions is, the stronger the reflection ability is, when the height of the protrusions is more than 0.5 μm, a good reflection effect is obtained. Further, the smaller and denser the pitch between the protrusions, the stronger the reflection capability, but the patterning limit of the yellow light process is a distance required for GaN growth, and thus cannot be less than 0.1 μm. Further, the larger the size of the projections, the larger the whole reflecting surface is represented, but the less the GaN grows (mainly GaN grows in the spaces between the projections, and then laterally polymerized to cover the whole projections), so that the size of the projections is 0.5 to 5 μm.
The material of the patterned substrate 10 is sapphire, silicon nitride, gallium nitride or aluminum nitride.
The protrusions of the present application serve to reflect light incident between substrates from GaN, and thus have a refractive index smaller than that of GaN, and the protrusions themselves are transparent and non-light-absorbing, and have good adhesion to the substrates. Specifically, the protrusions are made of a light-transmitting material having a refractive index of less than 2.3. Preferably, the material of the protrusion is Al2O3、Ti2O5、 TiO2Or SiO2。
Example 1
Referring to fig. 2, the present invention provides a pair of pattern substrate with adjustable light-emitting angle, pattern substrate 10 has a plurality of protrusions arranged in an array, the protrusions include first protruding unit 21 and second protruding unit 22, first protruding unit 21 and second protruding unit 22 are located on both sides of the axis, first protruding unit 21 is provided with a first inclined plane, second protruding unit 22 is provided with a second inclined plane, and the inclined direction of first inclined plane is the same as the inclined direction of second inclined plane.
Specifically, the first projection unit 21 and the second projection unit 22 are in the shape of a right triangle. The inclination angle of the first inclined plane and the second inclined plane is 45 degrees, and the light-emitting angle of the chip is 45 degrees.
Example 2
Referring to fig. 3 the present invention provides a pair of pattern substrate with adjustable light-emitting angle, the pattern substrate 10 has a plurality of protrusions arranged in an array, the protrusions include a first protrusion unit 21 and a second protrusion unit 22, the first protrusion unit 21 and the second protrusion unit 22 are located on two sides of the axis, the first protrusion unit 21 is provided with a first inclined plane, the second protrusion unit 22 is provided with a second inclined plane, and the inclined direction of the first inclined plane is the same as the inclined direction of the second inclined plane.
Specifically, the first projection unit 21 and the second projection unit 22 are in the shape of a right triangle. The inclination angle of the first inclined plane and the second inclined plane is 145 degrees, and the light-emitting angle of the chip is 145 degrees.
Example 3
Referring to fig. 4, the present invention provides a pair of pattern substrate with adjustable light-emitting angle, pattern substrate 10 has a plurality of protrusions arranged in an array, the protrusions include first protruding unit 21 and second protruding unit 22, first protruding unit 21 and second protruding unit 22 are located on both sides of the axis, first protruding unit 21 is provided with a first inclined plane, second protruding unit 22 is provided with a second inclined plane, and the inclined direction of first inclined plane is the same as the inclined direction of second inclined plane.
Specifically, the first projection unit 21 and the second projection unit 22 are in the shape of a right trapezoid. The inclination angle of the first inclined plane and the second inclined plane is 30 degrees, and the light-emitting angle of the chip is 30 degrees.
Example 4
Referring to fig. 5, the present invention provides a pair of pattern substrate with adjustable light-emitting angle, pattern substrate 10 has a plurality of protrusions arranged in an array, the protrusions include first protruding unit 21 and second protruding unit 22, first protruding unit 21 and second protruding unit 22 are located on both sides of the axis, first protruding unit 21 is provided with a first inclined plane, second protruding unit 22 is provided with a second inclined plane, and the inclined direction of first inclined plane is the same as the inclined direction of second inclined plane.
Specifically, the first projection unit 21 and the second projection unit 22 are in the shape of a right trapezoid. The inclination angle of the first inclined plane and the second inclined plane is 150 degrees, and the light-emitting angle of the chip is 150 degrees.
Example 5
Referring to fig. 6, the present invention provides a pair of pattern substrate with adjustable light-emitting angle, pattern substrate 10 has a plurality of protrusions arranged in an array, the protrusions include a first protrusion unit 21, a second protrusion unit 22 and a third protrusion unit 23, first protrusion unit 21 and second protrusion unit 22 are located on both sides of the axis, third protrusion unit 23 is located between first protrusion unit 21 and second protrusion unit 22, first protrusion unit 21 is provided with a first inclined plane, second protrusion unit 22 is provided with a second inclined plane, and the inclination direction of first inclined plane is opposite to the inclination direction of second inclined plane.
Specifically, the first projection unit 21 and the second projection unit 22 are in the shape of a right triangle. The inclination angle of first inclined plane is 145 degrees, the inclination angle of second inclined plane is 45 degrees, and the light-emitting angle of chip is 90 degrees.
Example 6
Referring to fig. 7, the present invention provides a pattern substrate with adjustable light-emitting angle, the pattern substrate 10 has a plurality of protrusions arranged in an array, the protrusions include first protruding units 21 and second protruding units 22, the first protruding units 21 and the second protruding units 22 are located on two sides of the axis, the first protruding units 21 are provided with a first inclined plane, the second protruding units 22 are provided with a second inclined plane, and the inclination direction of the first inclined plane is opposite to the inclination direction of the second inclined plane.
Specifically, the first projection unit 21 and the second projection unit 22 are in the shape of a right triangle. The inclination angle of the first inclined plane is 45 degrees, the inclination angle of the second inclined plane is 145 degrees, and the light-emitting angle of the chip is 0-180 degrees.
Accordingly, the present invention provides a chip, including any one of the above pattern substrates with adjustable light-emitting angles.
The above disclosure is only a preferred embodiment of the present invention, and certainly should not be taken as limiting the scope of the invention, which is defined by the claims and their equivalents.
Claims (8)
1. The pattern substrate with the adjustable light-emitting angle is characterized by comprising a plurality of protrusions which are arrayed, the protrusions are made of light-transmitting materials with the refractive index smaller than 2.3, each protrusion comprises a first protrusion unit and a second protrusion unit, the first protrusion unit and the second protrusion unit are located on two sides of an axis, the first protrusion unit is provided with a first inclined surface, the second protrusion unit is provided with a second inclined surface, and the inclination direction of the first inclined surface is the same as or opposite to that of the second inclined surface.
2. The light-emission-angle-adjustable pattern substrate of claim 1, wherein the protrusions further comprise third protrusion units, the third protrusion units are located between the first protrusion units and the second protrusion units, and the third protrusion units refract light emitted from the active layer toward the axial center of the chip.
3. The light-emission-angle-adjustable pattern substrate of claim 2, wherein the first projection unit and the second projection unit have a right-angled triangle shape or a right-angled trapezoid shape, and the third projection unit has a rectangular shape.
4. The light-emission-angle-adjustable pattern substrate of claim 1, wherein the protrusions have a size of 0.5 to 5 μm, a pitch of 0.1 to 0.5 μm, and a height of 0.5 to 3 μm.
5. The adjustable light-emitting angle patterned substrate of claim 1, wherein the material of the patterned substrate is sapphire, silicon nitride, gallium nitride or aluminum nitride.
6. The adjustable light-emitting angle pattern substrate of claim 5, wherein the material of the protrusions is Al2O3、Ti2O5、TiO2Or SiO2。
7. The light-emission-angle-adjustable patterned substrate of claim 5, wherein the protrusions are formed by an IPC or RIE etching method.
8. A chip comprising the light emission angle adjustable patterned substrate according to any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920979501.7U CN209981261U (en) | 2019-06-26 | 2019-06-26 | Pattern substrate and chip capable of adjusting light-emitting angle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920979501.7U CN209981261U (en) | 2019-06-26 | 2019-06-26 | Pattern substrate and chip capable of adjusting light-emitting angle |
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| Publication Number | Publication Date |
|---|---|
| CN209981261U true CN209981261U (en) | 2020-01-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920979501.7U Active CN209981261U (en) | 2019-06-26 | 2019-06-26 | Pattern substrate and chip capable of adjusting light-emitting angle |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113517378A (en) * | 2021-05-18 | 2021-10-19 | 华灿光电（浙江）有限公司 | Light emitting diode chip for enhancing side light intensity and manufacturing method thereof |
| CN113903845A (en) * | 2021-08-25 | 2022-01-07 | 华灿光电（浙江）有限公司 | Micro light-emitting diode chip and preparation method thereof |
-
2019
- 2019-06-26 CN CN201920979501.7U patent/CN209981261U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113517378A (en) * | 2021-05-18 | 2021-10-19 | 华灿光电（浙江）有限公司 | Light emitting diode chip for enhancing side light intensity and manufacturing method thereof |
| CN113517378B (en) * | 2021-05-18 | 2022-06-17 | 华灿光电（浙江）有限公司 | Light emitting diode chip for enhancing side light intensity and manufacturing method thereof |
| CN113903845A (en) * | 2021-08-25 | 2022-01-07 | 华灿光电（浙江）有限公司 | Micro light-emitting diode chip and preparation method thereof |
| CN113903845B (en) * | 2021-08-25 | 2023-12-22 | 华灿光电（浙江）有限公司 | Micro light-emitting diode chip and preparation method thereof |
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