Abstract: A lens of an LED package structure includes a square-shaped base layer, a first light-guiding portion integrally connected to the base layer, a second light-guiding portion taperedly extended from the first light-guiding portion. The second light-guiding portion has an apex located away from the first light-guiding portion. The lens includes four side curved surfaces and four boundary curved surfaces connected to the apex. Four first projecting regions are defined by orthogonally projecting the four boundary curved surfaces onto the base layer, and the four first projecting regions are arranged on two diagonals of the base layer. Any two adjacent boundary curved surfaces are provided with one of the side curved surfaces there-between. Each boundary curved surface has a first radius of curvature (R1), a portion of each side curved surface arranged on the second light-guiding portion has a second radius of curvature (R2), wherein R1/R2=M?{square root over (2)} and M=0.8˜1.2.

Abstract: A light-emitting display device includes a substrate, several light emitting units for emitting light with different wavelengths, and an optical lens. The substrate has at least one receiver for containing these light emitting units. A light guide structure of the light-emitting display device can be the receiver with a specific designed, a frame body with at least one corresponding through hole formed on the corresponding receiver, or at least one optical element formed on the corresponding receiver, so as the light emitted by the light emitting units can be reflected towards the preset optical axis. And the optical lens is formed on the light guide structure as medium for mixing lights of different wavelengths for achieving a uniform lighting effect.

Abstract: A lens of an LED package structure includes a square-shaped base layer, a first light-guiding portion integrally connected to the base layer, a second light-guiding portion taperedly extended from the first light-guiding portion. The second light-guiding portion has an apex located away from the first light-guiding portion. The lens includes four side curved surfaces and four boundary curved surfaces connected to the apex. Four first projecting regions are defined by orthogonally projecting the four boundary curved surfaces onto the base layer, and the four first projecting regions are arranged on two diagonals of the base layer. Any two adjacent boundary curved surfaces are provided with one of the side curved surfaces there-between. Each boundary curved surface has a first radius of curvature (R1), a portion of each side curved surface arranged on the second light-guiding portion has a second radius of curvature (R2), wherein R1/R2=M?{square root over ( )}2 and M=0.8˜1.2.

Abstract: An LED package structure includes a carrier mounted with a plurality of LED chips, a first glue-layer, a second glue-layer and an encapsulation resin filled within the first and the second glue-layers. The first glue-layer is formed on a top surface of the carrier and has a thin-film structure which is substantially flat on a top surface thereof. The second glue-layer is stacked on the first glue-layer. The second glue-layer has a height higher than that of the first glue-layer. The second glue-layer has a volume greater than that of the first glue-layer. The present invention also provides a method of LED package structure to stably produce a dam structure with uniform shape and high ratio of height/width.

Abstract: An LED package structure includes a carrier mounted with a plurality of LED chips, a first glue-layer, a second glue-layer and an encapsulation resin filled within the first and the second glue-layers. The first glue-layer is formed on a top surface of the carrier and has a thin-film structure which is substantially flat on a top surface thereof. The second glue-layer is stacked on the first glue-layer. The second glue-layer has a height higher than that of the first glue-layer. The second glue-layer has a volume greater than that of the first glue-layer. The present invention also provides a method of LED package structure to stably produce a dam structure with uniform shape and high ratio of height/width.

Abstract: A deep UV LED chip includes a light-emitting unit, an electrode unit, an electron blocking layer, and an optical layer. The electron blocking layer is disposed between a multiple quantum well layer and a p-type aluminum gallium nitride layer of the light-emitting unit. The optical layer is formed on the light-emitting unit and has a refractive index ranging from 1.0 to 2.3. Another deep UV LED chip further includes a light-transmitting substrate. The optical layer is formed on the light-transmitting substrate and has a refractive index ranging from 1.0 to a refractive index of the light-transmitting substrate. A package structure containing the deep UV LED chip is also disclosed.

Abstract: A deep UV LED chip includes a light-emitting unit, an electrode unit, an electron blocking layer, and an optical layer. The electron blocking layer is disposed between a multiple quantum well layer and a p-type aluminum gallium nitride layer of the light-emitting unit. The optical layer is formed on the light-emitting unit and has a refractive index ranging from 1.0 to 2.3. Another deep UV LED chip further includes a light-transmitting substrate. The optical layer is formed on the light-transmitting substrate and has a refractive index ranging from 1.0 to a refractive index of the light-transmitting substrate. A package structure containing the deep UV LED chip is also disclosed.

Abstract: An LED package structure includes a ceramic substrate, a ceramic board, a light-emitting unit, a first adhesive layer, a second adhesive layer, and a cover. The ceramic board having a thru-hole is disposed on the ceramic substrate. The light-emitting unit is disposed on the ceramic substrate and is arranged in the thru-hole of the ceramic board. The first and second adhesive layers are disposed on the ceramic board, and the second adhesive layer covers the first adhesive layer. The cover is fixed on the ceramic board by the first and second adhesive layers. Thus, the shearing force of the LED package structure of the instant disclosure is increased by having the first and second adhesive layers, which are connected to each other.

Abstract: An LED package structure includes a chip carrier and an LED chip. The chip carrier includes a ceramic substrate, a circuit layer, a ceramic reflective plate disposed on the ceramic substrate, and a metal slug. The ceramic substrate has a first thru-hole. A main portion of the metal slug is embedded in the first thru-hole, and partially protrudes from the first thru-hole with a height of 10˜30 ?m to define as a protrusion block. An extending portion of the metal slug is connected to the outer edge of protrusion block, and the top surfaces of extending portion and protrusion block are coplanar to define a mounting surface. The ceramic reflective plate has a second thru-hole, and the mounting surface is exposed from the ceramic reflective plate via the second thru-hole. The LED chip is fixed on the mounting surface and is electrically connected to the circuit layer.

Abstract: A manufacturing method of an LED package structure includes the steps as follows: providing an LED package structure assembly, which has a substrate layer, an LED chip set located on the substrate layer, and an encapsulating gel layer covering the LED chip set; taking a first blade to saw the LED package structure assembly from the encapsulating gel layer to the substrate layer until a plurality of sawing grooves are formed on the substrate layer; and taking a second blade to saw the LED package structure assembly along each sawing groove until the second blade passes through the substrate layer, thereby forming a plurality of LED package structures separated from each other. Wherein a hardness of the first blade is greater than that of the second blade, and a thickness of the second blade is less than that of the first blade.

Abstract: A light-emitting display device includes a substrate, several light emitting units for emitting light with different wavelengths, and an optical lens. The substrate has at least one receiver for containing these light emitting units. A light guide structure of the light-emitting display device can be the receiver with a specific designed, a frame body with at least one corresponding through hole formed on the corresponding receiver, or at least one optical element formed on the corresponding receiver, so as the light emitted by the light emitting units can be reflected towards the preset optical axis. And the optical lens is formed on the light guide structure as medium for mixing lights of different wavelengths for achieving a uniform lighting effect.

Abstract: An LED package structure includes a chip carrier and an LED chip. The chip carrier includes a ceramic substrate, a circuit layer, a ceramic reflective plate disposed on the ceramic substrate, and a metal slug. The ceramic substrate has a first thru-hole. A main portion of the metal slug is embedded in the first thru-hole, and partially protrudes from the first thru-hole with a height of 10˜30 ?m to define as a protrusion block. An extending portion of the metal slug is connected to the outer edge of protrusion block, and the top surfaces of extending portion and protrusion block are coplanar to define a mounting surface. The ceramic reflective plate has a second thru-hole, and the mounting surface is exposed from the ceramic reflective plate via the second thru-hole. The LED chip is fixed on the mounting surface and is electrically connected to the circuit layer.

Abstract: A light-emitting structure comprises a carrier, a light-emitting diode package, and a fixing module. The light-emitting diode package comprises a brittle substrate and a light-emitting unit. The brittle substrate is disposed on the carrier and the light-emitting unit is disposed on the brittle substrate. The fixing module comprises at least two screw units and at least two elastic members which sleeve the screw unit respectively. Each of screw units is screwed onto the carrier and applies a force on the upper surface of the brittle substrate, so as to fasten the brittle substrates to the carrier. Each of elastic members is disposed between the respective screw unit and the carrier, so as to adjust the force from the screw unit.

Abstract: An LED device includes a substrate, a number (N) of flip-chip LED die(s), an electrical conductive structure and a lens structure. The substrate has upper and lower surfaces and is formed with multiple through holes. A ratio of LED die(s) surface area to an area of the upper surface of the substrate ranges from 22.7% to 76.2%. The electrical conductive structure includes a number (N) of upper bonding pad assembly (assemblies), a number (N+1) of lower bonding pads and a number (2N) of interconnectors. Each upper bonding pad assembly includes two upper bonding pads electrically connected to the LED die(s). The interconnectors are disposed in the through holes and interconnect the upper and lower bonding pads. The lens structure covers the LED die(s).

Abstract: A light-emitting structure for providing a predetermined whiteness includes a substrate and a light-emitting unit. The light-emitting unit includes a plurality of first and second light-emitting groups disposed on the substrate. Each first light-emitting group includes a plurality of first LED chips having a first predetermined wavelength. Each second light-emitting group includes a plurality of second LED chips having a second predetermined wavelength. When surface areas of the first and the second LED chips are substantially the same or currents passing through the first and the second LED chips are substantially the same in advance, the light-emitting structure can provide a predetermined whiteness according to different requirements by adjusting the current ratio or the surface area ratio of the first and the second LED chips, respectively.

Abstract: An LED device includes a substrate, a number (N) of flip-chip LED die(s), an electrical conductive structure and a lens structure. The substrate has upper and lower surfaces and is formed with multiple through holes. A ratio of LED die(s) surface area to an area of the upper surface of the substrate ranges from 22.7% to 76.2%. The electrical conductive structure includes a number (N) of upper bonding pad assembly (assemblies), a number (N+1) of lower bonding pads and a number (2N) of interconnectors. Each upper bonding pad assembly includes two upper bonding pads electrically connected to the LED die(s). The interconnectors are disposed in the through holes and interconnect the upper and lower bonding pads. The lens structure covers the LED die(s).

Abstract: A light emitting diode (LED) device includes: a substrate having a central portion; an LED chip unit formed on the central portion of the substrate; a circuit pattern having a positive electrode and a negative electrode that are formed on the substrate, each of the positive electrode and the negative electrode including an arc portion and at least one extending portion that extends from the arc portion toward the central portion; a wire unit connecting the LED chip unit to the extending portions; a glass layer disposed on the substrate, covering the arc portions and including an opening unit that is aligned with the central portion of the substrate; a dam structure formed on the glass layer and extending along the arc portions; and an encapsulated body disposed substantially within the dam structure to cover the extending portions, the wire unit and the LED chip unit.

Abstract: A light-emitting structure comprises a carrier, a light-emitting diode package, and a fixing module. The light-emitting diode package comprises a brittle substrate and a light-emitting unit. The brittle substrate is disposed on the carrier and the light-emitting unit is disposed on the brittle substrate. The fixing module comprises at least two screw units and at least two elastic members which sleeve the screw unit respectively. Each of screw units is screwed onto the carrier and applies a force on the upper surface of the brittle substrate, so as to fasten the brittle substrates to the carrier. Each of elastic members is disposed between the respective screw unit and the carrier, so as to adjust the force from the screw unit.

Abstract: The present invention relates to a package structure for light-emitting diodes (LEDs). The package structure includes a substrate, a heat-dissipating structure disposed on the substrate, and a plurality of LED chips uniformly disposed on the heat-dissipating structure. The heat-dissipating structure has a central portion and at least one peripheral portion surrounding thereof. The central portion is capable of dissipating more heat than the peripheral portion. Thus, the temperature difference between the LED chips disposed on the central portion and the LED chips disposed on the peripheral portion can be reduced.

Abstract: A light-emitting structure includes a substrate and a light-emitting unit. The substrate has a first meander conductive track and a second meander conductive track. Each first chip-mounting area of the first meander conductive track has at least two first chip-mounting lines. Each second chip-mounting area of the second meander conductive track has at least two second chip-mounting lines. The light-emitting unit includes first light-emitting groups and second light-emitting groups. Each first light-emitting group includes at least one or a plurality of first LED chips disposed on the same first chip-mounting line of the corresponding first chip-mounting area, and each second light-emitting group includes at least one or a plurality of second LED chips disposed on the same second chip-mounting line of the corresponding second chip-mounting area. The first and the second chip-mounting areas are arranged alternately, thus the first and the second light-emitting groups are arranged alternately.