Light-emitting device and display device
A light-emitting device includes a circuit carrier board having a short side and a long side, a plurality of light-emitting units on the circuit carrier board for emitting three or more color lights, and a light-transmitting glue layer on the circuit carrier board and covering the plurality of light-emitting units. The short side is shorter than the long side. The plurality of light-emitting units include a first light-emitting unit. The first light-emitting unit has a light exit surface, a first sidewall, and a second sidewall. The first sidewall faces the short side and has a first included angle with the light exit surface, and the second sidewall faces the long side and has a second included angle with the light exit surface. The first included angle is between 85 to 95 degrees, and the second included angle is less than 85 degrees or greater than 105 degrees.
1 . A light-emitting device, comprising:
a circuit carrier board having a short side and a long side, wherein the short side is shorter than the long side;
a plurality of light-emitting units on the circuit carrier board for emitting three or more color lights, wherein the plurality of light-emitting units comprises a first light-emitting unit, and wherein maximum light-emitting intensities of the plurality of light-emitting units are at positions of 0±10 degrees in polar coordinates; and
a light-transmitting glue layer on the circuit carrier board and covering the plurality of light-emitting units,
wherein the first light-emitting unit has a light exit surface, a first sidewall, and a second sidewall, wherein the first sidewall faces the short side and has a first included angle with the light exit surface, and the second sidewall faces the long side and has a second included angle with the light exit surface, and wherein the first included angle is between 85 and 95 degrees, and the second included angle is less than 85 degrees or greater than 105 degrees.
2 . The light-emitting device as claimed in claim 1 , wherein the light-transmitting glue layer comprises silicone, epoxy resin, acrylic resin, or glass.
3 . The light-emitting device as claimed in claim 1 , wherein the light-transmitting glue layer has greater than 80% transmittance for wavelengths from 440 nm to 470 nm, 510 nm to 540 nm, and 610 nm to 640 nm.
4 . The light-emitting device as claimed in claim 1 , wherein a horizontal distance between two adjacent first light-emitting units of the plurality of light-emitting units and a vertical distance between the two adjacent first light-emitting units are the same.
5 . The light-emitting device as claimed in claim 1 , wherein the first light-emitting unit is a flip-chip, and the first light-emitting unit comprises a semiconductor stack and a sapphire substrate above the semiconductor stack.
6 . The light-emitting device as claimed in claim 5 , wherein an included angle between a side surface and an upper surface of the sapphire substrate is between 85 and 95 degrees.
7 . The light-emitting device as claimed in claim 1 , wherein a thickness of the light-transmitting glue layer between an upper surface of the light-transmitting glue layer and an upper surface of the first light-emitting unit is between 1 μm and 500 μm.
8 . The light-emitting device as claimed in claim 7 , wherein the thickness is between 50 μm and 150 μm.
9 . A display device, comprising:
a substrate; and
a plurality of light-emitting devices as claimed in claim 1 fixed on the substrate in a form of an array.
10 . The display device as claimed in claim 9 , wherein the three or more color lights comprise red light, blue light, and green light.
11 . The display device as claimed in claim 9 , wherein a spacing distance between two adjacent light-emitting devices is between 5 μm and 1000 μm.
12 . The light-emitting device as claimed in claim 1 , wherein the circuit carrier board comprises an upper electrode.
13 . The light-emitting device as claimed in claim 12 , wherein the first light-emitting unit comprises an electrode facing and electrically connected to the upper electrode.
14 . The light-emitting device as claimed in claim 13 , further comprising a light-absorbing glue layer between the light-transmitting glue layer and the circuit carrier board.
15 . The light-emitting device as claimed in claim 14 , wherein the first light-emitting unit has a plurality of sidewalls, and the light-absorbing glue layer covers the plurality of sidewalls.
16 . The light-emitting device as claimed in claim 13 , further comprising a conductive glue layer between the electrode and the upper electrode, and electrically connected to the electrode and the upper electrode.
17 . The light-emitting device as claimed in claim 16 , wherein a thickness of the conductive glue layer between the electrode and the upper electrode is less than 5 μm.
18 . The light-emitting device as claimed in claim 16 , wherein the conductive glue layer comprises an insulating portion and a plurality of conductive portions, and the insulating portion surrounds the plurality of conductive portions.
19 . The light-emitting device as claimed in claim 18 , wherein the insulating portion comprises silicone, epoxy resin, or a mixture thereof, and the plurality of conductive portions comprise metal.