Led light string, led light board, and led display

An LED light board, comprising:

• a plurality of LED light strings;
• each LED light string comprises a plurality of LED beads, and each LED bead is provided with a first signal input port, a first signal output port, a second signal input port, and a second signal output port, and the LED bead is provided with an LED driver chip and an LED emitting unit encapsulated therein,
• wherein the first signal input port, the second signal input port, the first signal output port, and the second signal output port of each LED bead are electrically connected to a first signal input pin, a second signal input pin, a first signal output pin, and a second signal output pin of the LED driver chip inside the LED bead, respectively, so as to transmit data signals to the LED emitting unit via any signal input pin of the LED driver chip;
• the first signal output port and the second signal output port of adjacent LED beads are electrically connected to the first signal input port and the second signal input port, respectively, to form a serial signal line;
• and
• the first signal input port and the second signal output port of each LED bead are electrically connected directly by bypassing the LED driver chip inside the LED bead to form a first breakpoint continuation line.

An LED display, comprising:

• a controller and at least two LED light boards;
• the at least two LED light boards are sequentially connected together to form the LED display;
• the controller is provided at top and/or bottom of the LED display;
• each LED light board comprises:
• a plurality of LED light strings;
• each LED light string comprises a plurality of LED beads, each LED bead is provided with a first signal input port, a first signal output port, a second signal input port, and a second signal output port, and the LED bead is provided with an LED driver chip and an LED emitting unit encapsulated therein,
• wherein the first signal input port, the second signal input port, the first signal output port, and the second signal output port of each LED bead are electrically connected to a first signal input pin, a second signal input pin, a first signal output pin, and a second signal output pin of the LED driver chip inside the LED bead, respectively, so as to transmit data signals to the LED emitting unit via any signal input pin of the LED driver chip;
• the first signal output port and the second signal output port of adjacent LED beads are electrically connected to the first signal input port and the second signal input port, respectively, to form a serial signal line;
• and
• the first signal input port and the second signal output port of each LED bead are electrically connected directly by bypassing the LED driver chip inside the LED bead to form a first breakpoint continuation line;
• signal transmission directions of the at least two LED light boards are the same, or at least some adjacent LED light boards of the at least two LED light boards have opposite signal transmission directions.

An LED light board, comprising:

• a plurality of LED light strings, each LED light string comprises:
• a plurality of LED beads, each LED bead is provided with a power input port and a power output port, the LED bead is provided with an LED driver chip and an LED emitting unit encapsulated therein,
• the power input port and the power output port of each LED bead are electrically connected to the power input pin and the power output pin of the LED driver chip, respectively, to provide power signals to the LED emitting unit via the LED driver chip;
• the power output ports and the power input port of adjacent LED beads are electrically connected in a same LED light string, so as to form a serial power supply line;
• and the serial power supply lines of adjacent LED light strings are connected in parallel, to form a parallel power supply line.

An LED display comprising:

• a controller and at least two LED light boards;
• each LED light board comprises:
• a plurality of LED light strings;
• each LED light string comprises:
• a plurality of LED beads, and each LED bead is provided with a power input port and a power output port;
• the LED bead is provided with an LED driver chip and an LED emitting unit encapsulated therein;
• the controller is electrically connected to a power input port of a first LED bead and a power output port of a last LED bead in each LED light string, so as to supply power signal to LED beads;
• the power input port and the power output port of each LED bead are electrically connected to a power input pin and a power output pin of the LED driver chip encapsulated in the LED bead, respectively, so as to supply power signals to the LED emitting unit via the LED driver chip;
• in each LED light board, the power output port and the power input port of adjacent LED beads in each LED light string are electrically connected, to form a serial power supply line, and the serial power supply lines of adjacent LED light strings are connected in parallel, to form a parallel power supply line.