US 12,394,958 B2
Light module and LIDAR apparatus having at least one light module of this type
Andre Srowig, Dortmund (DE); and Fabian Finkeldey, Dortmund (DE)
Assigned to Elmos Semiconductor SE, Dortmund (DE)
Appl. No. 17/788,681
Filed by Elmos Semiconductor SE, Dortmund (DE)
PCT Filed Jan. 7, 2021, PCT No. PCT/EP2021/050199
§ 371(c)(1), (2) Date Jun. 23, 2022,
PCT Pub. No. WO2021/140160, PCT Pub. Date Jul. 15, 2021.
Claims priority of application No. 10 2020 100 142.8 (DE), filed on Jan. 7, 2020; application No. 10 2020 111 075.8 (DE), filed on Apr. 23, 2020; application No. 10 2020 114 782.1 (DE), filed on Jun. 3, 2020; and application No. 10 2020 124 564.5 (DE), filed on Sep. 22, 2020.
Prior Publication US 2023/0023489 A1, Jan. 26, 2023
Int. Cl. H01S 3/00 (2006.01); G01S 7/481 (2006.01); G01S 7/484 (2006.01); G01S 17/10 (2020.01); H01L 23/00 (2006.01); H01S 5/02345 (2021.01); H01S 5/042 (2006.01); H01S 5/062 (2006.01); H01S 5/0683 (2006.01); H01S 5/40 (2006.01)
CPC H01S 5/0428 (2013.01) [G01S 7/4811 (2013.01); G01S 7/4815 (2013.01); G01S 7/484 (2013.01); G01S 17/10 (2013.01); H01L 24/48 (2013.01); H01L 24/49 (2013.01); H01S 5/02345 (2021.01); H01S 5/06216 (2013.01); H01S 5/06835 (2013.01); H01S 5/4031 (2013.01); H01L 24/05 (2013.01); H01L 24/06 (2013.01); H01L 2224/05553 (2013.01); H01L 2224/0603 (2013.01); H01L 2224/06152 (2013.01); H01L 2224/06181 (2013.01); H01L 2224/48101 (2013.01); H01L 2224/48105 (2013.01); H01L 2224/48137 (2013.01); H01L 2224/48145 (2013.01); H01L 2224/4903 (2013.01); H01L 2224/49175 (2013.01)] 24 Claims
OG exemplary drawing
 
1. A light module comprising:
a carrier provided with an upper side, in which a circuit die with integrated circuits is arranged,
the circuit die having an upper side,
a transistor, in particular a power transistor, formed in the upper side of the circuit die,
the transistor having a conduction path which can be switched to a conducting or blocking state, said path having a first end portion and a second end portion, of which the first end portion is electrically connected with a first conduction path terminal area and the second end portion is electrically connected with a second conduction path terminal area, which are both exposed at the upper side of the carrier, and the transistor comprising a control terminal for switching the conduction path to a conducting state or blocking state,
a light-emitting diode die comprising a light-emitting diode or a laser diode, with a lower side comprising a first terminal area and an upper side comprising a second terminal area,
the light-emitting diode die being arranged with its first terminal area located on the first conduction path terminal area of the transistor (Tdis) and these two terminal areas being electrically connected with one another,
a charge storage component comprising a charge storage, the charge storage component comprising a lower side having a first terminal area and an upper side having a second terminal area,
the charge storage component being arranged with its first terminal area located on the second conduction path terminal area of the transistor and these two terminal areas being electrically connected with one another,
at least one first bonding wire which electrically connects the second terminal area of the light-emitting diode die with the second terminal area of the charge storage component,
a charging circuit for charging the charge storage component with electric charge, the charging circuit being integrated in the circuit die and having an output, and
a control circuit for driving the transistor and the charging circuit, the control circuit being integrated in the circuit die,
the charging circuit having assigned thereto a charge terminal area exposed on the upper side of the carrier, with which the output of the charging circuit is electrically connected,
the charge terminal area of the charging circuit being electrically connected with the second terminal area of the charge storage component via at least one second bonding wire, and
the control circuit controlling the charging circuit to charge the charge storage component up to a degree of charge necessary for generation of a light pulse by the light-emitting diode die, the control circuit subsequently driving the transistor to switch its conduction path to a conducting state.