TWI718630B - Light emitting device - Google Patents

Abstract

A light emitting device includes a back plate, a first conductive coating layer, a light emitting layer, a second conductive coating layer, a first metal element, a second metal element, and a power supply assembly. The back plate has an upper surface and a lower surface opposite to each other. The first conductive coating layer is disposed on the upper surface of the back plate. The light emitting layer is disposed on the first conductive coating layer. The second conductive coating layer is disposed on the light emitting layer. The first metal element is embedded in the back plate and has a first end and a second end. The first end is flush with the lower surface, and the second end passes through the upper surface to contact the first conductive coating layer. The second metal element is embedded in the back plate and has a third end and a fourth end. The third end is flush with the lower surface, and the fourth end passes through the upper surface and contacts the second conductive coating layer without contacting the first conductive coating layer. The first end of the first metal element and the third end of the second metal element contact the power supply assembly.

Description

Light-emitting device

The present invention relates to a light-emitting device, and more particularly to a light-emitting device with a better appearance and an enhanced user experience.

In the existing light-emitting device, in order to make the light-emitting layer emit light, the sides of the two conductive coatings on both sides of the light-emitting layer are electrically connected to the power supply circuit board by means of two external wires. When the two wires are energized, the light-emitting layer located between the two conductive coatings can emit light. However, the two external wires will damage the overall appearance of the light-emitting device and affect the user experience. In addition, even if other components can be added to hide the two wires, there is a problem of relatively increased manufacturing costs.

The present invention provides a light emitting device, which can have a more beautiful appearance, thereby enhancing user experience.

The light-emitting device of the present invention includes a back plate, a first conductive coating, a light-emitting layer, a second conductive coating, a first metal piece, a second metal piece, and a power supply component. The back plate has an upper surface and a lower surface opposite to each other. The first conductive coating is disposed on the upper surface of the back plate. The light-emitting layer is configured on the first conductive coating. The second conductive coating is disposed on the light-emitting layer. The first metal piece is buried in the back plate and has a first end and a second end. The first end cuts the lower surface, and the second end penetrates the upper surface to contact the first conductive coating. The second metal piece is embedded in the back plate and has a third end and a fourth end. The third end is cut to the lower surface, and the fourth end penetrates the upper surface and does not contact the first conductive coating but contacts the second conductive coating. The power supply component is arranged on the lower surface of the backplane. The first end of the first metal piece and the third end of the second metal piece contact the power supply component.

In an embodiment of the present invention, the orthographic projected area of the first conductive coating on the back plate is larger than the orthographic projected area of the second conductive coating on the back plate.

In an embodiment of the present invention, the orthographic projection area of the first conductive coating on the back plate is smaller than that of the back plate.

In an embodiment of the present invention, the above-mentioned light-emitting device further includes a dielectric layer. The medium layer is disposed between the light-emitting layer and the first conductive coating.

In an embodiment of the present invention, the aforementioned first conductive coating has a first opening, the dielectric layer has a second opening, and the light-emitting layer has a third opening. The first opening, the second opening, and the third opening communicate with each other. The fourth end of the second metal piece passes through the first opening, the second opening, and the third opening to contact the second conductive coating.

In an embodiment of the present invention, the orthographic projection area of the second conductive coating on the backplane is smaller than the orthographic projection area of the light-emitting layer on the backplane.

In an embodiment of the present invention, the above-mentioned light-emitting device further includes an insulating layer. The insulating layer is disposed between the back plate and the first conductive coating.

In an embodiment of the present invention, the orthographic projection area of the aforementioned insulating layer on the backplane is less than or equal to the surface area of the backplane.

In an embodiment of the present invention, the shapes of the aforementioned first metal piece and the second metal piece include a cylinder or a rectangular cylinder.

In an embodiment of the present invention, the material of the first conductive coating and the material of the second conductive coating include copper paste.

Based on the above, in the design of the light-emitting device of the present invention, the first metal piece and the second metal piece are buried in the back plate, and both ends of the first metal piece contact the power supply component and the first conductive coating respectively, and the first metal piece Two ends of the two metal parts respectively contact the power supply component and the second conductive coating. Compared with the conventional electrical connection to the power supply circuit board by connecting two wires on the sides of the two conductive coatings, the first conductive coating and the second conductive coating of the present invention can respectively pass through the buried first The one metal piece and the second metal piece are electrically connected to the power supply assembly, which can have a more beautiful appearance, thereby enhancing user experience.

In order to make the above-mentioned features and advantages of the present invention more comprehensible, the following specific embodiments are described in detail in conjunction with the accompanying drawings.

FIG. 1 is a schematic top view of a light-emitting device according to an embodiment of the invention. Fig. 2 is a schematic cross-sectional view taken along the line I-I' of Fig. 1. 1 and 2 at the same time, the light emitting device 100 of this embodiment includes a back plate 110, a first conductive coating 120, a light emitting layer 130, a second conductive coating 140, a first metal member 150, and a second metal member 160 And power supply assembly 170. The back plate 110 has an upper surface 111 and a lower surface 112 opposite to each other, wherein the back plate 110 is, for example, a plastic plate. The first conductive coating 120 is disposed on the upper surface 111 of the back plate 110, and the material of the first conductive coating 120 is, for example, copper paste, but it is not limited thereto. The light-emitting layer 130 is disposed on the first conductive coating 120, and the material of the light-emitting layer 130 is, for example, phosphor, but it is not limited thereto. The second conductive coating 140 is disposed on the light-emitting layer 130, and the material of the second conductive coating 140 is, for example, copper paste, but it is not limited thereto.

In other words, the first conductive coating 120, the light-emitting layer 130, and the second conductive coating 140 of this embodiment are all disposed on the upper surface 111 of the back plate 110. The second conductive coating 140 and the first conductive coating 120 are respectively located on opposite sides of the light emitting layer 130, and the light emitting layer 130 and the back plate 110 are respectively located on opposite sides of the first conductive coating 120. Preferably, the orthographic area of the first conductive coating 120 on the backplate 110 is smaller than that of the backplate 110, and the orthographic area of the first conductive coating 120 on the backplate 110 is larger than that of the second conductive coating 140 on the backplate. The orthographic projection area on 110 is not limited to this, as long as the first conductive coating 120 and the second conductive coating 140 are not in contact with each other. The orthographic projection area of the second conductive coating 140 on the backplate 110 is smaller than the orthographic area of the light-emitting layer 130 on the backplate 110 so as not to affect the light emission.

In particular, the first metal member 150 of this embodiment is embedded in the back plate 110 and has a first end 151 and a second end 152 opposite to each other. The first end 151 of the first metal piece 150 is aligned with the lower surface 112 of the back plate 110, and the second end 152 of the first metal piece 150 penetrates the upper surface 111 of the back plate 110 and contacts the first conductive coating 120. Here, the shape of the first metal member 150 is, for example, a cylinder, and the end surfaces of the first end 151 and the second end 152 are, for example, circular, but not limited to this. The second metal member 160 is embedded in the back plate 110 and has a third end 161 and a fourth end 162 opposite to each other. The third end 161 of the second metal piece 160 is aligned with the lower surface 112 of the back plate 110, and the fourth end 162 of the second metal piece 160 penetrates the upper surface 111 of the back plate 110 and does not contact the first conductive coating 120. Contact the second conductive coating 140. Here, the shape of the second metal member 160 is, for example, a rectangular column, and the end surfaces of the third end 161 and the fourth end 162 are, for example, rectangular, but it is not limited thereto. The power supply assembly 170 is, for example, a printed circuit board assembly (PCBA) or other charged electronic components, and is disposed on the lower surface 112 of the back plate 110, wherein the first end 151 and the second end 151 of the first metal part 150 The third end 161 of the metal piece 160 contacts the power supply assembly 170. For example, the first end 151 of the first metal member 150 and the third end 161 of the second metal member 160 are electrically connected to the circuit layer 171 of the power supply assembly 170, but not limited to this.

Furthermore, the light-emitting device 100 of this embodiment may further include a dielectric layer 180, wherein the dielectric layer 180 is disposed between the light-emitting layer 130 and the first conductive coating 120 to effectively isolate the first conductive coating 120 from the second conductive coating 120. Coating 140 to avoid short circuits. In more detail, in this embodiment, the first conductive coating 120 has a first opening 121, the dielectric layer 180 has a second opening 181, and the light-emitting layer 130 has a third opening 131, wherein the first opening 121, the second opening 121 The two openings 181 and the third opening 131 communicate with each other. The fourth end 162 of the second metal member 160 can pass through the first opening 121, the second opening 181, and the third opening 131 to contact the second conductive coating 140 without contacting the first conductive layer 120. In other words, through the design of the first opening 121, the second opening 181 and the third opening 131, the second metal member 160 will not contact the first conductive coating 120.

In addition, the light-emitting device 100 of this embodiment may further include an insulating layer 190, wherein the insulating layer 190 is disposed between the back plate 110 and the first conductive coating 120 to isolate the back plate 110 and the first conductive coating 120, thereby ensuring The back plate 110 and the first conductive coating 120 are electrically isolated from each other. Here, the orthographic projection area of the insulating layer 190 on the back plate 110 is smaller than the surface area of the back plate 110, but it is not limited to this. In some embodiments, the orthographic projection area of the insulating layer on the backplane may also be equal to the surface area of the backplane.

In short, in the light-emitting device 100 of this embodiment, the buried first metal member 150 can be electrically connected to the first conductive coating 120 and the power supply component 170, and the buried second metal member 160 can be electrically connected to the second The conductive coating 140 and the power supply component 170. In this way, the arrangement of the first metal piece 150 and the second metal piece 160 can replace the conventional external two wires arranged on the outside of the two conductive coatings. In this way, the light emitting device 100 of this embodiment can have a more beautiful appearance.

It is worth mentioning that the second end 152 of the first metal member 150 is in contact with the first conductive coating 120, which means that the second end 152 of the first metal member 150 can be cut to the surface 122 of the first conductive coating 120 or It is buried in the first conductive coating 120. Similarly, the fourth end 162 of the second metal member 160 contacts the second conductive coating 140, which means that the fourth end 162 of the second metal member 160 can be cut to the surface 142 of the second conductive coating 140 or buried in Inside the second conductive coating 140. As long as the second end 152 of the first metal piece 150 has direct contact with the first conductive coating 120, and the fourth end 162 of the second metal piece 160 has direct contact with the second conductive coating 140, it belongs to the protection of the present invention. Range.

In addition, the present invention does not limit the shapes of the first metal member 150 and the second metal member 160. In one embodiment, the shape of the first metal member 150 and the second metal member 160 may also be the same, such as a cylinder, a rectangular column, or other suitable shapes, which still fall within the scope of the present invention.

In summary, in the design of the light-emitting device of the embodiment of the present invention, the first metal piece and the second metal piece are embedded in the back plate, and both ends of the first metal piece contact the power supply component and the first conductive coating, respectively. The two ends of the second metal member respectively contact the power supply component and the second conductive coating. Compared with the conventional electrical connection to the power supply circuit board by externally connecting two wires on the outside of the conductive coating, the first conductive coating and the second conductive coating of the present invention can respectively penetrate the embedded first metal And the second metal piece is electrically connected to the power supply component, which can have a more beautiful appearance, thereby enhancing the user experience.

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention. Anyone with ordinary knowledge in the relevant technical field can make some changes and modifications without departing from the spirit and scope of the present invention. The scope of protection of the present invention shall be determined by the scope of the attached patent application.

100: Light-emitting device

110: Backplane

111: upper surface

112: lower surface

120: The first conductive coating

121: The first opening

122, 142: Surface

130: luminescent layer

131: Third Opening

140: Second conductive coating

150: The first metal piece

151: first end

152: second end

160: The second metal piece

161: third end

162: fourth end

170: power supply components

171: circuit layer

180: dielectric layer

181: second opening

190: Insulation layer

FIG. 1 is a schematic top view of a light-emitting device according to an embodiment of the invention. Fig. 2 is a schematic cross-sectional view taken along the line I-I' of Fig. 1.

100: Light-emitting device

110: Backplane

111: upper surface

112: lower surface

120: The first conductive coating

121: The first opening

122, 142: Surface

130: luminescent layer

131: Third Opening

140: Second conductive coating

150: The first metal piece

151: first end

152: second end

160: The second metal piece

161: third end

162: fourth end

170: power supply components

171: circuit layer

180: dielectric layer

181: second opening

190: Insulation layer

Claims (10)

A light-emitting device includes: a back plate having an upper surface and a lower surface opposite to each other; a first conductive coating layer disposed on the upper surface of the back plate; a light-emitting layer disposed on the first conductive coating layer On; a second conductive coating, configured on the light-emitting layer; a first metal piece, buried in the back plate, and has a first end and a second end, wherein the first end is aligned with the bottom Surface, the second end penetrates the upper surface to contact the first conductive coating; a second metal piece is embedded in the back plate and has a third end and a fourth end, wherein the third end Cutting the lower surface, the fourth end passes through the upper surface and does not contact the first conductive coating but contacts the second conductive coating; and a power supply component is disposed on the lower surface of the backplane, and The first end of the first metal piece and the third end of the second metal piece contact the power supply component, wherein the second metal piece is electrically connected to the second conductive coating and the power supply component, and the first The two metal parts do not touch the first conductive coating. According to the light-emitting device described in claim 1, wherein the orthographic projection area of the first conductive coating on the backplane is larger than the orthographic projection area of the second conductive coating on the backplane. The light-emitting device according to the first item of the scope of patent application, wherein the orthographic projection area of the first conductive coating on the back plate is smaller than that of the back plate. The light-emitting device described in item 1 of the scope of patent application further includes: A dielectric layer is arranged between the light-emitting layer and the first conductive coating. The light-emitting device according to claim 4, wherein the first conductive coating has a first opening, the dielectric layer has a second opening, the light-emitting layer has a third opening, the first opening, the The second opening and the third opening are communicated with each other, and the fourth end of the second metal piece passes through the first opening, the second opening and the third opening to contact the second conductive coating. The light-emitting device according to claim 1, wherein the orthographic projection area of the second conductive coating on the backplane is smaller than the orthographic projection area of the light-emitting layer on the backplane. The light-emitting device described in item 1 of the scope of patent application further includes: an insulating layer disposed between the back plate and the first conductive coating. The light-emitting device according to item 7 of the scope of patent application, wherein the orthographic projection area of the insulating layer on the back plate is less than or equal to the surface area of the back plate. According to the light-emitting device described in claim 1, wherein the shape of the first metal piece and the second metal piece includes a cylinder or a rectangular column. According to the light-emitting device described in claim 1, wherein the material of the first conductive coating and the material of the second conductive coating include copper paste.

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