Display and lighting apparatus including a light-emitting unit that emits high quality illumination through arrangements of lenses and light emitting devices
A light-emitting unit includes a plurality of lenses; and two or more light-emitting devices covered by each of the lenses, and the two or more light-emitting devices covered by one lens of the lenses are electrically separated from each other.
1 . A light-emitting unit comprising:
lenses;
groups of light-emitting devices, each group having a plurality of light-emitting devices covered by one lens of the lenses, first and second light-emitting devices in each group being disposed side by side in a first direction such that there are no conductors electrically connecting a p-electrode or an n-electrode of the first light-emitting device with a p-electrode or an n-electrode of the second light-emitting device, thereby causing the first and second light-emitting devices to be electrically separated from each other;
packages that house each of the groups of the light-emitting devices;
an optical function sheet over the lenses; and
a sealing resin that is filled in each of the packages,
wherein a third light-emitting device of the plurality of light-emitting devices in each group is electrically coupled to the second light-emitting device so that there is a conductor electrically connecting a p-electrode or an n-electrode of the third light-emitting device with the p-electrode or the n-electrode of the second light-emitting device.
2 . The light-emitting unit according to claim 1 , wherein wavelength bands of light emitted from the plurality of light-emitting devices are the same as each other.
3 . The light-emitting unit according to claim 1 ,
wherein wavelength bands of light emitted from the plurality of light-emitting devices are the same as each other, and
wherein the first and second light-emitting devices pass effective currents therethrough, the effective currents being different in magnitude from each other.
4 . The light-emitting unit according to claim 1 , wherein the first and second the plurality of light-emitting devices pass effective currents therethrough, the effective currents being different in magnitude from each other.
5 . The light-emitting unit according to claim 1 ,
wherein the third light-emitting device of the plurality of light-emitting devices in each group is coupled to the second light-emitting device in a second direction that intersects the first direction.
6 . The light-emitting unit according to claim 1 , wherein four light-emitting devices are in the groups and are covered by each of the lenses.
7 . The light-emitting unit according to claim 6 , wherein the second and third light-emitting devices covered by the lens are electrically coupled to one another are coupled by a wiring line and the first and second light-emitting devices covered by one lens of the lenses have wavelength bands of light emitted therefrom that are the same as each other.
8 . The light-emitting unit according to claim 7 , wherein the first and second light-emitting devices covered by the one lens pass effective currents therethrough, the effective currents being different in magnitude from each other.
9 . The light-emitting unit according to claim 1 , wherein the light-emitting devices comprises an LED (Light-Emitting Diode).
10 . The light-emitting unit according to claim 1 , further comprising a reflecting section that is provided in each of the package.
11 . The light-emitting unit according to claim 10 , wherein the reflecting section separates the light-emitting devices in each of the groups.
12 . The light-emitting unit according to claim 11 , wherein a height of the reflecting section is greater than a thickness of the sealing resin in each of the groups.
13 . The light-emitting unit according to claim 1 , wherein the optical function sheet comprises quantum dot.
14 . The light-emitting unit according to claim 1 , wherein
each of the lenses comprises a plurality of projected sections for securing a reflecting sheet, each of the plurality of projected sections being projected from a circumferential edge of the lens.
15 . The light-emitting unit according to claim 1 , comprising a diffusing plate over the optical function sheet, wherein the optical function sheet is a wavelength conversion sheet.
16 . A display comprising:
a display panel having a backside; and
a light-emitting unit positioned on the backside,
wherein the light-emitting unit includes:
lenses;
groups of light-emitting devices, each group having a plurality of light-emitting devices covered by one lens of the lenses, first and second light-emitting devices in each group being disposed side by side in a first direction such that there are no conductors electrically connecting a p-electrode or an n-electrode of the first light-emitting device with a p-electrode or an n-electrode of the second light-emitting device, thereby causing the first and second light-emitting devices to be electrically separated from each other;
packages that house each of the groups of the light-emitting devices;
an optical function sheet over the lenses; and
a sealing resin that is filled in each of the packages,
wherein a third light-emitting device of the plurality of light-emitting devices in each group is electrically coupled to the second light-emitting device so that there is a conductor electrically connecting a p-electrode or an n-electrode of the third light-emitting device with the p-electrode or the n-electrode of the second light-emitting device.
17 . The display according to claim 16 , wherein wavelength bands of light emitted from the plurality of light-emitting devices are the same as each other.
18 . The display according to claim 16 ,
wherein wavelength bands of light emitted from the plurality of light-emitting devices are the same as each other, and
wherein the first and second light-emitting pass effective currents therethrough, the effective currents being different in magnitude from each other.
19 . The display according to claim 16 , comprising a diffusing plate over the optical function sheet, wherein the optical function sheet is a wavelength conversion sheet.
20 . The display according to claim 16 , comprising a wire that electrically connects the second and third light-emitting devices in one group and another wire electrically connects one of the second or third light-emitting devices in the one group to one of light-emitting devices in an adjacent group.