TW201304202A - LED package structure - Google Patents

Abstract

An LED package structure includes a base, a first LED chip, and a second LED chip. The base defines a grooves thereof to form a reflector. The base forms a protrusion at a bottom of the reflector. The protrusion divides the bottom of the reflector into a first area and a second area. The first LED chip is received in the first area and the second LED chip is received in the second area. The first LED chip and the second LED chip are separated by the protrusion.

Description

Light emitting diode package structure

The invention relates to a light emitting diode package structure.

The light-emitting diode is a kind of solid light source with energy saving, environmental protection and long life. Therefore, the research on the light-emitting diode technology has been very active in the past decade, and the light-emitting diode has gradually replaced the traditional light source such as fluorescent lamp and incandescent lamp. In the prior art, in order to achieve specific illumination requirements, it is generally required to mix and match a plurality of LED packages, and the specific distance between the LED packages and the arrangement of the LEDs is achieved. Lighting needs, although this structure has a certain flexibility, but also has the problem of poor integration and high cost. In addition, in the application, multi-wafer type light-emitting diode package structure is also used, and the specific structure is to integrate a plurality of light-emitting diode chips with different performance indexes to realize multi-band or high color rendering illumination requirements. However, the light emitted by each of the light-emitting diode chips may interfere with each other, and it is difficult to control the overall light-emitting effect. Can not meet the needs of the actual application.

In view of the above, the present invention aims to provide a light emitting diode package structure that can reduce light interference of each light emitting diode and achieve specific illumination requirements.

A light emitting diode package structure includes a base, a first light emitting diode, and a second light emitting diode. A receiving cup is formed on the base, and the bottom surface of the cup protrudes to form at least one retaining wall, and the retaining wall divides the receiving cup into the first area and the second area. A light emitting diode and a second light emitting diode are respectively disposed in the first region and the second region, and are separated from each other by a retaining wall.

The light-emitting diode package structure is configured to separate the first light-emitting diode and the second light-emitting diode from each other by a retaining wall, thereby reducing mutual light emitted by the first light-emitting diode and the second light-emitting diode Interference, in addition, according to the actual lighting needs to set the height, angle or shape of the retaining wall, to achieve the control of the overall light-emitting effect of the LED package structure.

The invention will be further described in detail below with reference to the accompanying drawings.

Please refer to FIG. 1 and FIG. 2 , a light emitting diode package structure 100 according to a preferred embodiment of the present invention includes a susceptor 10 , a first light emitting diode 20 and a second light emitting diode disposed in the pedestal 10 . Polar body 30.

The pedestal 10 includes a top surface 11 and a bottom surface 12, and the pedestal 10 defines a receiving cup 13 from the top surface 11 along the bottom surface 12. The inner surface of the accommodating cup 13 is an inclined surface, and the inclined surface is from the top surface. 11 extends in the direction of the bottom surface 12 and is inclined inward in the radial direction of the accommodating cup 13, so that the entire accommodating cup 13 is wide and narrow, and has a funnel shape. Preferably, the inner surface of the receiving cup 13 is also coated with a reflective material. A retaining wall 14 is formed on the bottom surface of the receiving cup 13, and the retaining wall 14 will accommodate the cup 13 in two regions. The cross-section of the retaining wall 14 has a trapezoidal shape, and the upper surface has a width smaller than the width of the lower surface, and the two side surfaces 141 and 142 are inclined surfaces, and the inclined surface is coated with a reflective material for reflecting the first light-emitting diode 20 and The light emitted by the second light-emitting diode 30 increases the light-emitting efficiency. The susceptor 10 further includes a first electrode 15 and a second electrode 16 respectively located on opposite sides of the retaining wall 14 and separated from each other, wherein the first electrode 15 and the second electrode 16 are One end is formed on the bottom surface of the receiving cup 13 and extends to the retaining wall 14, and the other end extends from the end surface of the base 10 to the bottom surface 12 of the base 10 for connection with an external circuit.

The first LED body 20 is disposed in a first region formed by the bottom surface of the receiving cup 13 , the inner surface of the receiving cup 13 , and the side surface 141 of the retaining wall 14 , and is disposed on the first electrode 15 . The light emitted by the first light-emitting diode 20 is reflected by the inner surface of the receiving cup 13 and the side surface 141 of the retaining wall 14 and is emitted outside the light-emitting diode package 100. One end of the first LED body 20 is electrically connected to the first electrode 15 by a wire, and the other end is electrically connected to the second electrode 16 by a wire crossing the retaining wall 14. The first phosphor powder 40 is further filled with the first phosphor powder 40, and the first phosphor powder 40 is selected from the group consisting of yttrium aluminum garnet and yttrium aluminum. A combination of one or more of garnet and citrate. The first LED 20 emits light of a first wavelength and excites the first phosphor 40 to produce light of a first color.

The second LED assembly 30 is disposed in a second region of the bottom surface of the receiving cup 13 , the inner surface of the receiving cup 13 , and the side surface 142 of the retaining wall 14 , and is disposed on the second electrode 16 . The light emitted by the second LEDs 30 is reflected by the inner surface of the receiving cup 13 and the side surface 142 of the retaining wall 14 and is emitted outside the LED package 100. One end of the second LED body 30 is electrically connected to the second electrode 16 by a wire, and the other end is electrically connected to the first electrode 15 by a wire crossing the retaining wall 14. The second phosphor powder 50 is further filled in the second region, and the second phosphor powder 50 is coated with the second light emitting diode 30. The second phosphor powder 50 may be selected from the group consisting of yttrium aluminum garnet and yttrium aluminum pomegranate. A combination of one or more of stone and citrate. The second LED 30 emits light of a second wavelength and excites the second phosphor 50 to produce light of a second color.

The accommodating cup 13 of the susceptor 10 is further filled with an encapsulation layer 60 covering the first illuminating diode 20, the second illuminating diode 30, the retaining wall 14, and the first phosphor 40. And a second phosphor 50 for protecting the first and second light emitting diodes 30 from dust, moisture, and the like. In the embodiment, the encapsulation layer 60 is a transparent encapsulant.

It can be understood that the bottom surface of the receiving cup 13 is not limited to one of the retaining walls in the embodiment, and a plurality of retaining walls may be formed, and the plurality of retaining walls may be parallel or mutually staggered so that The receiving cup 13 is divided into a plurality of regions, and the plurality of light emitting diodes are respectively disposed in the respective regions, and are separated from each other by the retaining wall. In addition, the retaining wall 14 is not limited to the structure described in the present invention, and the height, angle or shape of the retaining wall 14 can be set according to actual lighting requirements to control the overall light-emitting effect of the LED package structure 100.

In use, the light emitted by the first light-emitting diode 20 passes through the inner surface of the receiving cup 13 and the side surface 141 of the retaining wall 14 is reflected outside the light-emitting diode package 100, and the second light-emitting diode 30 passes through. The inner surface of the receiving cup 13 and the side surface 142 of the retaining wall 14 are reflected outside the light emitting diode package structure 100, and the first light emitting diode 20 and the second light emitting diode 30 are separated by the retaining wall 14, thereby reducing The light emitted from each other by the first light-emitting diode 20 and the second light-emitting diode 30 interfere with each other, so that a better illumination effect can be achieved. In addition, since two different regions of the accommodating cup 13 divided by the retaining wall 14 are filled with different phosphor powders, multi-band or high color rendering light emission of the LED package structure 100 can be achieved. Moreover, since the retaining wall 14 is located between the first electrode 15 and the second electrode 16, the contact area with the encapsulating layer 60 is increased, so that the airtightness of the light emitting diode package structure 100 can be increased.

Compared with the prior art, the LED package structure of the present invention can reduce the first LED and the second LED by separating the first LED and the second LED from each other by a retaining wall. The mutual interference of the light emitted by the polar body, in addition, the height, angle or shape of the retaining wall can be set according to the actual lighting needs, so as to realize the control of the overall light-emitting effect of the light-emitting diode package structure.

In addition, those skilled in the art can make other changes in the spirit of the present invention. Of course, the changes made in accordance with the spirit of the present invention should be included in the scope of the present invention.

100. . . Light emitting diode package structure

10. . . Pedestal

20. . . First light emitting diode

30. . . Second light emitting diode

40. . . First phosphor

50. . . Second phosphor

60. . . Encapsulation layer

11. . . Top surface

12. . . Bottom

13. . . Holding cup

14. . . Retaining wall

15. . . First electrode

16. . . Second electrode

141, 142. . . Side surface

1 is a top plan view of a light emitting diode package structure according to an embodiment of the present invention.

2 is a schematic cross-sectional view of the light emitting diode package structure of FIG. 1.

100. . . Light emitting diode package structure

10. . . Pedestal

20. . . First light emitting diode

30. . . Second light emitting diode

40. . . First phosphor

50. . . Second phosphor

60. . . Encapsulation layer

11. . . Top surface

12. . . Bottom

13. . . Holding cup

14. . . Retaining wall

15. . . First electrode

16. . . Second electrode

141, 142. . . Side surface

Claims (8)

An illuminating diode package structure includes a pedestal, a first illuminating diode, and a second illuminating diode. The pedestal is formed with a receiving cup. The improvement is that the bottom surface of the accommodating cup is convex. Forming at least one retaining wall, the retaining wall dividing the receiving cup into the first region and the second region, wherein the first light emitting diode and the second light emitting diode are respectively disposed in the first region and the second region, and They are separated from each other by a retaining wall. The light emitting diode package structure of claim 1, wherein: the inner surface of the receiving cup is an inclined surface extending from the top of the base toward the bottom surface of the base and along the receiving cup The inner side of the receiving cup is also coated with a reflective material. The light emitting diode package structure according to claim 1, wherein: the cross section of the retaining wall is a trapezoid, the width of the retaining wall surface is smaller than the width of the lower surface, and the two side surfaces are inclined surfaces, and the inclined surface is It is coated with a reflective material. The illuminating diode package structure of claim 1, wherein the pedestal further comprises a first electrode and a second electrode, wherein the first electrode and the second electrode are respectively located at two sides of the retaining wall. Separated from each other, one end of the first electrode and the second electrode are respectively formed on the bottom surface of the receiving cup and extend to the retaining wall, and the other end extends outside the base for connection with an external circuit. The light emitting diode package structure of claim 4, wherein the first light emitting diode is disposed on the first electrode, and is electrically connected to the first electrode and the second electrode by wires, respectively. The second light emitting diode is disposed on the second electrode, and is electrically connected to the first electrode and the second electrode by wires, respectively. The light emitting diode package structure of claim 1, wherein the first region is further filled with a first phosphor powder, and the first phosphor powder covers the first light emitting diode. The illuminating diode package structure of claim 1, wherein the second region is further filled with a second phosphor powder, and the second phosphor powder covers the second illuminating diode. The illuminating diode package structure of claim 7, wherein: the accommodating cup is further filled with an encapsulation layer, the encapsulation layer encapsulating the first illuminating diode, the second illuminating diode, Retaining wall, first phosphor and second phosphor.