Patent ID: 11961949
Assignee: SHANGHAI TIANMA MICRO-ELECTRONICS CO., LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 5:
6. A light emitting device, wherein the light emitting device comprises:
a substrate;
a circuit layer, formed on one side of the substrate, wherein the circuit layer comprises a first power signal line, a second power signal line, and a pulse width modulation signal line; and
at least one switching element and at least one light emitting element, wherein the switching element and the light emitting element are electrically connected to the circuit layer;
wherein the switching element comprises a control terminal, a first terminal, and a second terminal;
wherein the control terminal is electrically connected to the pulse width modulation signal line;
wherein the first terminal is electrically connected to the first power signal line, and the second terminal is electrically connected to the second power signal line;
wherein (i) the light emitting element is electrically connected to the first terminal and the first power signal line, or (ii) the light emitting element is electrically connected to the second terminal and the second power signal line;
wherein at least one of the first power signal line and the second power signal line is wired in a grid;
wherein a vertical projection of the grid on the substrate surrounds a vertical projection on the substrate of the switching element and the light emitting element electrically connected to the switching element;
wherein the light emitting device further comprises: a resistor, the resistor is electrically connected to the circuit layer; and
wherein the resistor and the light emitting element are electrically connected in series to both the first power signal line and the second power signal line.