CIRCUIT STRUCTURE, TRANSMIT MODULE, DETECTION APPARATUS, AND TERMINAL DEVICE
The present disclosure relates to circuit structures, transmitters, detection apparatuses, and terminal devices are that may be used for autonomous driving or assisted driving. One example circuit structure includes a switch, a laser, and an energy storage that are placed in a stacked manner, and may be applied to a lidar. The switch is located at a first layer, and the laser and the energy storage are located at a second layer. A first end of the switch is connected to a first end of the laser through a first interlayer medium, a second end of the switch is connected to a first end of the energy storage through a second interlayer medium, and a second end of the laser is connected to a second end of the energy storage.
1 . A circuit structure, comprising:
a switch;
a laser; and
an energy storage, wherein:
the switch, the laser, and the energy storage are placed in a stacked manner, the switch is located at a first layer, and the laser and the energy storage are located at a second layer; and
a first end of the switch is connected to a first end of the laser through a first interlayer medium, a second end of the switch is connected to a first end of the energy storage through a second interlayer medium, and a second end of the laser is connected to a second end of the energy storage.
2 . The circuit structure according to claim 1 , wherein at least one of:
a first overlap exists between projections of the switch and the laser in a direction in which the switch and the laser are placed in the stacked manner, and the first interlayer medium is disposed in an area corresponding to the first overlap between the first layer and the second layer; or
a second overlap exists between projections of the switch and the energy storage in a direction in which the switch and the energy storage are placed in the stacked manner, and the second interlayer medium is disposed in an area corresponding to the second overlap between the first layer and the second layer.
3 . The circuit structure according to claim 1 , further comprising:
a first printed circuit board (PCB), wherein the first PCB is located between the first layer and the second layer.
4 . The circuit structure according to claim 3 , wherein the first interlayer medium and the second interlayer medium pass through the first PCB.
5 . The circuit structure according to claim 3 , further comprising:
a second PCB, wherein the laser and the energy storage are disposed on the second PCB, and the second end of the laser is connected to the second end of the energy storage through a wire on the second PCB.
6 . The circuit structure according to claim 5 , further comprising:
a driver chip, wherein the driver chip is connected to a third end of the switch.
7 . The circuit structure according to claim 6 , wherein the driver chip is located at the first layer.
8 . The circuit structure according to claim 7 , wherein the driver chip and the switch are placed in a same package or different packages in a die form.
9 . The circuit structure according to claim 5 , further comprising:
a power supply, wherein a positive electrode of the power supply is connected to the second end of the laser and the second end of the energy storage, and a negative electrode of the power supply is grounded.
10 . The circuit structure according to claim 9 , wherein the power supply is disposed on the second PCB, and the positive electrode of the power supply is connected to the second end of the laser and the second end of the energy storage through the wire on the second PCB.
11 . The circuit structure according to claim 9 , further comprising:
a conductive pillar, wherein the conductive pillar is disposed on the second PCB and passes through the first PCB; and
wherein the power supply is disposed on the first PCB, and the positive electrode of the power supply is connected to the second end of the laser and the second end of the energy storage through a wire on the first PCB, the conductive pillar, and the wire on the second PCB.
12 . The circuit structure according to claim 9 , further comprising:
a resistor element, wherein:
a first end of the resistor element is connected to the positive electrode of the power supply, and a second end of the resistor element is connected to the second end of the laser and the second end of the energy storage; or
a first end of the resistor element is connected to the negative electrode of the power supply, and a second end of the resistor element is grounded after being connected to the second end of the switch and the first end of the energy storage.
13 . The circuit structure according to claim 1 , wherein at least one of:
the laser is a die; or
the energy storage is a die.
14 . A transmitter module, comprising a power supply, a driver chip, and a circuit structure, wherein the circuit structure comprises:
a switch;
a laser; and
an energy storage, wherein:
the switch, the laser, and the energy storage are placed in a stacked manner, the switch is located at a first layer, and the laser and the energy storage are located at a second layer;
a first end of the switch is connected to a first end of the laser through a first interlayer medium, a second end of the switch is connected to a first end of the energy storage through a second interlayer medium, and a second end of the laser is connected to a second end of the energy storage;
the power supply is configured to supply power to the circuit structure;
the driver chip is configured to send a drive signal to the circuit structure; and
the circuit structure is configured to emit detection laser light based on the drive signal.
15 . The transmitter according to claim 14 , wherein at least one of:
a first overlap exists between projections of the switch and the laser in a direction in which the switch and the laser are placed in the stacked manner, and the first interlayer medium is disposed in an area corresponding to the first overlap between the first layer and the second layer; or
a second overlap exists between projections of the switch and the energy storage in a direction in which the switch and the energy storage are placed in the stacked manner, and the second interlayer medium is disposed in an area corresponding to the second overlap between the first layer and the second layer.
16 . The transmitter according to claim 14 , further comprising:
a first printed circuit board (PCB), wherein the first PCB is located between the first layer and the second layer.
17 . The transmitter according to claim 16 , wherein the first interlayer medium and the second interlayer medium pass through the first PCB.
18 . The transmitter according to claim 16 , further comprising:
a second PCB, wherein the laser and the energy storage are disposed on the second PCB, and the second end of the laser is connected to the second end of the energy storage through a wire on the second PCB.
19 . A detection apparatus, comprising a control circuit and a transmitter, wherein the transmitter comprises a power supply, a driver chip, and a circuit structure, and the circuit structure comprises a switch, a laser, and an energy storage, wherein:
the switch, the laser, and the energy storage are placed in a stacked manner, the switch is located at a first layer, and the laser and the energy storage are located at a second layer;
a first end of the switch is connected to a first end of the laser through a first interlayer medium, a second end of the switch is connected to a first end of the energy storage through a second interlayer medium, and a second end of the laser is connected to a second end of the energy storage;
the power supply is configured to supply power to the circuit structure;
the driver chip is configured to send a drive signal to the circuit structure;
the circuit structure is configured to emit detection laser light based on the drive signal;
the control circuit is configured to send a control signal to the transmitter; and
the transmitter is configured to emit detection laser light based on the control signal.
20 . The detection apparatus according to claim 19 , further comprising a receiver, wherein:
the receiver is configured to receive an echo signal returned after the detection laser light scans a target object, and convert the echo signal into an electrical signal; and
the control circuit is further configured to process the electrical signal to obtain point cloud data.