TWM587829U - Supporting structure for light source and light emitting device having the same - Google Patents

Abstract

A supporting structure for a light source includes a carrier, a ceramic frame, first top electrodes, and second top electrodes. The carrier has a top surface and a bottom surface opposite the top surface. The ceramic frame is located on the top surface of the carrier, and has hollow areas and blocking walls that surround the hollow areas. The first top electrodes are located in the top surface of the carrier and respectively in the hollow areas. The second top electrodes are located in the top surface of the carrier and respectively in the hollow areas. The second top electrodes are spaced apart from the first top electrodes.

Description

Light source support structure and light emission with light source support structure Device

The disclosure relates to a light source supporting structure and a light emitting device having the light source supporting structure.

Lighting is an indispensable tool in daily life. Most of the existing lighting devices use traditional light bulbs or tubes as the light source. Among these lamps or bulbs, fluorescent lamps, tungsten bulbs and halogen bulbs are more common. Since a conventional tungsten filament light bulb consumes a large amount of electric energy, in recent years, lighting equipment using a light-emitting diode (LED) as a light source has become increasingly popular. Compared with tungsten light bulbs, LED light sources have the advantages of long life, low power consumption, shock resistance and high brightness.

The traditional LED lighting device can be composed of a light source, a reflection cup and a glass cover. However, the cost of the reflection cup and the glass cover is high, and dimming is not easy, which is not good for design.

One aspect of the novel technology is a light source supporting structure.

According to an embodiment of the present invention, a light source supporting structure includes a carrier, a ceramic frame, a plurality of first upper electrodes, and a plurality of second upper electrodes. The carrier has opposite top and bottom surfaces. The ceramic frame is located on the top surface of the carrier, and has a plurality of hollow areas and a plurality of retaining walls surrounding the hollow areas. The first upper electrodes are located on the top surface of the carrier and are located in the hollow regions, respectively. The second upper electrodes are located on the top surface of the carrier and are respectively located in the hollowed-out areas. The second upper electrode is separated from the first upper electrode.

In an embodiment of the present invention, the light source supporting structure further includes a first lower electrode and a plurality of first conductive channels. The first lower electrode is located on the bottom surface of the carrier and is electrically connected to the first upper electrode. The first conductive channel is located in the carrier, and two ends of each first conductive channel respectively contact one of the first upper electrode and the first lower electrode.

In an embodiment of the present invention, the light source supporting structure further includes a plurality of second lower electrodes and a plurality of second conductive channels. The second lower electrode is located on the bottom surface of the carrier and is electrically connected to the second upper electrode, respectively. The second conductive channel is located in the carrier, and two ends of each second conductive channel respectively contact one of the second upper electrode and one of the second lower electrode.

In an embodiment of the present invention, a width of each of the above-mentioned retaining walls is in a range of 10 μm to 300 μm.

In one embodiment of the present invention, the ceramic frame is white or black.

Another aspect of the present invention is a light emitting device.

In an embodiment of the present invention, the light-emitting device includes a circuit board, a light source supporting structure, and a plurality of light sources. The light source supporting structure is located on the circuit board and includes a carrier, a ceramic frame, a plurality of first upper electrodes and a plurality of second On the electrode. The carrier has opposite top and bottom surfaces. The ceramic frame is located on the top surface of the carrier, and has a plurality of hollow areas and a plurality of retaining walls surrounding the hollow areas. The first upper electrodes are located on the top surface of the carrier and are located in the hollow regions, respectively. The second upper electrode is located on the top surface of the carrier and is respectively located in the hollow area, wherein the second upper electrode is separated from the first upper electrode. The light sources are respectively located on the first upper electrode, and are respectively electrically connected to the second upper electrode.

In an embodiment of the present invention, the light-emitting device further includes a first lower electrode and a plurality of second lower electrodes. The first lower electrode is located between the bottom surface of the carrier and the circuit board, and is electrically connected to the first upper electrode. The second lower electrode is located between the bottom surface of the carrier and the circuit board, and is electrically connected to the second upper electrode, respectively.

In one embodiment of the present invention, the light-emitting device further includes a plurality of light-transmitting layers. The light-transmitting layers are respectively located in the hollow area and cover the light sources respectively. The top surface of the light-transmitting layer is coplanar with the top surface of the retaining wall. The light-transmitting layer includes at least one of a light-transmitting glue and a phosphor.

In an embodiment of the present invention, a distance between each of the light sources and one of the retaining walls is in a range of 50 μm to 400 μm.

In one embodiment of the present invention, the light source is a light emitting diode, and its color selectively includes red, green, blue, purple, yellow, cool white, neutral white, warm white, lime and amber.

In the above-mentioned embodiment of the present invention, since the ceramic frame of the light source supporting structure is located on the top surface of the carrier, and the ceramic frame has a plurality of hollowed-out areas and a plurality of retaining walls surrounding the hollowed-out area, the plurality of light sources may be separately disposed The carrier in the hollowed-out area and the retaining wall of the ceramic frame can be used as the light reflecting structure of the light source, which can save the cost of the traditional metal reflection cup or metal reflection layer. In addition, since the light source supporting structure includes a plurality of first upper electrodes and a plurality of second upper electrodes, and There is a first upper electrode and a second upper electrode in each hollowed area, so each light source can be disposed on the first upper electrode, and the second upper electrode can be electrically connected with a wire, so that the light source supporting structure disclosed herein With the function of independent control of the light source.

100‧‧‧light source support structure

110‧‧‧ carrier

112‧‧‧Top

114‧‧‧ underside

120‧‧‧ceramic frame

121‧‧‧Top

122‧‧‧ hollow-out area

124‧‧‧ retaining wall

132‧‧‧first upper electrode

134‧‧‧second upper electrode

142‧‧‧First lower electrode

144‧‧‧Second lower electrode

152‧‧‧The first conductive channel

154‧‧‧Second conductive channel

160, 160a, 160b, 160c, 160d, 160e‧‧‧

170‧‧‧light-transmitting layer

172‧‧‧Top

200‧‧‧light-emitting device

210‧‧‧Circuit Board

2-2, 3-3‧‧‧ line segments

d‧‧‧pitch

L‧‧‧ hit line

W‧‧‧Width

FIG. 1 is a top view of a light source supporting structure according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view of the light source supporting structure of FIG. 1 along line segment 2-2.

FIG. 3 is a cross-sectional view of the light source supporting structure of FIG. 1 along line segment 3-3.

FIG. 4 is a cross-sectional view of the light source supporting structure of FIG. 2 after the light source and the light transmitting layer are provided.

FIG. 5 is a bottom view of the light source supporting structure of FIG. 1.

FIG. 6 is a top view of a light emitting device according to an embodiment of the present invention.

In the following, a plurality of embodiments of the present invention will be disclosed graphically. For clear description, many practical details will be explained in the following description. However, it should be understood that these practical details should not be applied to limit the new model. That is, in some embodiments of the present invention, these practical details are unnecessary. In addition, in order to simplify the drawings, some conventional structures and components will be shown in the drawings in a simple and schematic manner.

FIG. 1 is a top view of a light source supporting structure 100 according to an embodiment of the present invention. Figure 2 shows the light source support structure 100 along the line segment of Figure 1 Sectional view of 2-2. Referring to FIG. 1 and FIG. 2 at the same time, the light source supporting structure 100 includes a carrier 110, a ceramic frame 120, a plurality of first upper electrodes 132, and a plurality of second upper electrodes 134. The carrier 110 has a top surface 112 and a bottom surface 114 opposite to each other. The ceramic frame 120 is located on the top surface 112 of the carrier 110 and has a plurality of hollowed-out areas 122 and a plurality of retaining walls 124. The hollowed-out area 122 is surrounded by the retaining wall 124. The first upper electrode 132 is located on the top surface 112 of the carrier 110 and is located in the hollow region 122. The second upper electrode 134 is located on the top surface 112 of the carrier 110 and is located in the hollow region 122. The second upper electrode 134 is separated from the first upper electrode 132. That is, the first upper electrode 132 and the second upper electrode 134 are electrically insulated.

In this embodiment, the material of the carrier 110 may be ceramic, such as aluminum nitride (AlN), which has good heat dissipation efficiency, but is not limited to aluminum nitride. In addition, the material of the ceramic frame body 120 may be aluminum oxide (Al ₂ O ₃ ), and the ceramic frame body 120 may be white, which can be used as a reflecting surface of a light source to improve light extraction rate, but is not limited to white. For example, the ceramic frame 120 may be black and have a light shielding effect.

FIG. 3 is a cross-sectional view of the light source supporting structure 100 of FIG. 1 along the line segment 3-3. Referring to FIG. 2 and FIG. 3 at the same time, the light source supporting structure 100 further includes a first lower electrode 142 and a plurality of first conductive channels 152. The first lower electrode 142 is located on the bottom surface 114 of the carrier 110 and is electrically connected to the first upper electrode 132. The first conductive channel 152 is located in the carrier 110, and two ends of the first conductive channel 152 contact one of the first upper electrode 132 and the first lower electrode 142, respectively. In this way, all the first upper electrodes 132 can be electrically connected to each other through the first conductive channel 152 and the first lower electrode 142.

In addition, the light source supporting structure 100 further includes a plurality of second power-downs. The pole 144 and a plurality of second conductive channels 154. The second lower electrode 144 is located on the bottom surface 114 of the carrier 110 and is electrically connected to the second upper electrode 134. The second conductive channel 154 is located in the carrier 110, and two ends of the second conductive channel 154 contact the second upper electrode 134 and the second lower electrode 144, respectively. In this way, all the second upper electrodes 134 are not conductive with each other, and are only conductive with the second conductive channels 154 and the second lower electrodes 144 below them. With this design, the power supply controller can independently control the power supply of different second upper electrodes 134 via different second lower electrodes 144.

In this embodiment, the first conductive channel 152 and the second conductive channel 154 may be copper pillars, but the invention is not limited thereto.

FIG. 4 is a cross-sectional view of the light source supporting structure 100 of FIG. 2 after the light source 160 and the light transmitting layer 170 are disposed. As shown, the light source 160 is located on the first upper electrode 132 and is electrically connected to the second upper electrode 134. For example, the light source 160 may be electrically connected to the second upper electrode 134 by using a wire L. In this embodiment, the first lower electrode 142 and the second lower electrode 144 can be electrically connected to the positive electrode and the negative electrode of the power source, respectively, and the first upper electrode 132 and the second upper electrode 134 can be electrically connected to the positive electrode and the light source 160 respectively. negative electrode. The light source 160 may be a light emitting diode (LED), and its color may be, for example, red (R), green (G), blue (B), purple (UV), yellow (Amber), or cool white (CW). , Neutral white (NW), warm white (WW), Lime or amber (PC Amber), according to design requirements, different colors of light emitting diode light sources 160 can be provided on different first upper electrodes 132.

In addition, the light-transmitting layer 170 is located in the hollow region 122 and covers the light source 160. The top surface 172 of the light-transmitting layer 170 is coplanar with the top surface 121 of the retaining wall 124 of the ceramic frame 120. The transparent layer 170 may include at least one of a transparent glue and a phosphor. When the light-transmitting layer 170 includes light-transmitting glue, the color of the light source 160 is not changed. When the light-transmitting layer 170 includes a fluorescent powder, the light of the light source 160 can be converted into different colors by wavelength conversion, depending on the designer's needs.

Since the ceramic frame 120 of the light source supporting structure 100 is located on the top surface 112 of the carrier 110, and the ceramic frame 120 has a plurality of hollowed-out areas 122 and a plurality of retaining walls 124 surrounding the hollowed-out areas 122, a plurality of light sources 160 can be separately provided The carrier 110 in the hollowed-out area 122, and the retaining wall 124 of the ceramic frame 120 can be used as a light reflecting structure of the light source 160, which can save the cost of a traditional metal reflection cup or a metal reflection layer. In addition, since the light source supporting structure 100 includes a plurality of first upper electrodes 132 and a plurality of second upper electrodes 134, and each hollowed area 122 has a first upper electrode 132 and a second upper electrode 134, each light source 160 may be disposed on the first upper electrode 132 and may be electrically connected to the second upper electrode 134 by using a wire L.

In this embodiment, the width W of the retaining wall 124 may be in a range of 10 μm to 300 μm. A distance d between the light source 160 and the retaining wall 124 may be in a range of 50 μm to 400 μm. Through the above configuration, the light extraction rate can be effectively improved.

FIG. 5 is a bottom view of the light source supporting structure 100 of FIG. 1. Referring to FIG. 4 and FIG. 5 at the same time, the light source supporting structure 100 has the effect of independently controlling the light source 160. For example, the two first upper electrodes 132 below the two light sources 160 in FIG. 4 are electrically connected to a single first lower electrode 142, such as the first lower electrode 142 shown in the center area of FIG. 5; The two first upper electrodes 132 next to the two light sources 160 in FIG. 4 are electrically connected to the two second lower electrodes 144, such as the two second lower electrodes 144 shown in the upper left and upper right of FIG. In this way, the power supply controller can independently control the supply of different second upper electrodes 134 via different second lower electrodes 144. Electricity can achieve the effect of independently controlling different light sources 160. For example, different colors of light sources 160 can be mixed and matched, different currents can be input to adjust the brightness of the light sources 160, and the light sources 160 can be turned on at the same time or at different times.

It should be understood that the connection relationships, materials and functions of the components that have already been described will not be repeated here, and they will be described together. In the following description, other forms of the light source supporting structure will be described.

FIG. 6 is a top view of a light emitting device 200 according to an embodiment of the present invention. Referring to FIG. 5 and FIG. 6 at the same time, the light emitting device 200 includes a circuit board 210, the aforementioned light source supporting structure 100, a plurality of light sources 160, 160a, 160b, 160c, 160d, 160e, and a plurality of light transmitting layers 170. When the light source supporting structure 100 is located on the circuit board 210, the first lower electrode 142 is located between the bottom surface 114 of the carrier 110 and the circuit board 210, and the second lower electrode 144 is located between the bottom surface 114 of the carrier 110 and the circuit board 210. The power controller can electrically connect the first lower electrode 142 and the second lower electrode 144 through the lines of the circuit board 210, and can independently control the power supply of the different second upper electrodes 134 through different second lower electrodes 144 to achieve independent control. The efficacy of different light sources 160. In this embodiment, the number of wire L of each light source 160, 160a, 160b, 160c, 160d, 160e is two, which can make the current transmission more uniform, and when one wire L is damaged, the other wire L can continue to supply power. To maintain normal operation. In this embodiment, the light sources 160, 160a, and 160b may be red, green, and blue light-emitting diodes, respectively, and the light sources 160c, 160d, and 160e may be ultraviolet, yellow, amber, cool white, neutral white, Three of warm white and lime are selected according to design requirements. For example, the light-emitting device 200 can be used as a plant lamp emitting Lime green light.

Although the present invention has been disclosed as above in implementation, it is not intended to be used In order to limit the new model, anyone skilled in the art can make various modifications and retouches without departing from the spirit and scope of the new model. Therefore, the scope of protection of the new model shall be determined by the scope of the attached patent application. .

Claims (10)

A light source support structure includes: a carrier having a top surface and a bottom surface opposite to each other; a ceramic frame body located on the top surface of the carrier, and having a plurality of hollow areas and a plurality of stops surrounding the hollow areas Wall; a plurality of first upper electrodes on the top surface of the carrier and in the hollowed-out areas; and a plurality of second upper electrodes on the top surface of the carrier and in the hollowed-out areas, respectively. Wherein the second upper electrodes are separated from the first upper electrodes. The light source supporting structure according to claim 1, further comprising: a first lower electrode located on the bottom surface of the carrier and electrically connected to the first upper electrodes; and a plurality of first conductive channels located on the carrier And both ends of each of the first conductive channels contact one of the first upper electrodes and the first lower electrode, respectively. The light source supporting structure according to claim 1, further comprising: a plurality of second lower electrodes located on the bottom surface of the carrier and electrically connected to the second upper electrodes, respectively; and a plurality of second conductive channels located at In the carrier, two ends of each of the second conductive channels respectively contact one of the second upper electrodes and one of the second lower electrodes. The light source supporting structure according to claim 1, wherein a width of each of the retaining walls is in a range of 10 μm to 300 μm. The light source supporting structure according to claim 1, wherein the ceramic frame is white or black. A light emitting device includes: a circuit board; a light source supporting structure located on the circuit board, including: a carrier having a top surface and a bottom surface opposite to each other; and a ceramic frame body on the top surface of the carrier, And has a plurality of hollow areas and a plurality of retaining walls surrounding the hollow areas; a plurality of first upper electrodes located on the top surface of the carrier and respectively located in the hollow areas; and a plurality of second upper electrodes, Located on the top surface of the carrier and in the hollow areas, wherein the second upper electrodes are separated from the first upper electrodes; and a plurality of light sources are respectively located on the first upper electrodes, and The second upper electrodes are electrically connected. The light-emitting device according to claim 6, further comprising: a first lower electrode located between the bottom surface of the carrier and the circuit board, and electrically connected to the first upper electrodes; and a plurality of second lower electrodes Is located between the bottom surface of the carrier and the circuit board, and is electrically connected to the second upper electrodes respectively. The light-emitting device according to claim 6, further comprising: a plurality of light-transmitting layers respectively located in the hollow areas and covering the light sources, wherein a top surface of the light-transmitting layers and a top of the retaining walls are respectively. The planes are coplanar, and the light-transmitting layers include at least one of a light-transmitting glue and a phosphor. The light-emitting device according to claim 6, wherein a distance between each of the light sources and one of the retaining walls is in a range of 50 μm to 400 μm. The light-emitting device according to claim 6, wherein the light sources are light-emitting diodes, and the colors thereof include red, green, blue, purple, yellow, cool white, neutral white, warm white, lime, and amber.