Circuit board, backlight module, display module, and electronic device

A backlight module, wherein the backlight module comprises a circuit board, and the circuit board comprises:

• at least two sub-boards that are spaced apart, the at least two sub-boards extend in a first direction and are arranged in a second direction, the first direction and the second direction cross each other, each sub-board comprises a connection part, the connection parts of adjacent sub-boards are connected to each other to form a common connection part, and the common connection part extends in the second direction;
• wherein a plurality of functional devices and at least one driver chip are fastened on each sub-board, each sub-board is divided into a plurality of partitions, and each partition comprises at least one functional device;
• and
• wherein the circuit board further comprises a plurality of driving groups, each driving group comprises one driver chip and at least two partitions, and the one driver chip of each driving group is configured to independently drive each partition in the corresponding driving group;
• and
• wherein the plurality of driving groups comprises a first driving group, and the one driver chip and the at least two partitions in the first driving group are located on a same sub-board.

A display module, wherein the display module comprises a display panel and a backlight module, the backlight module comprises a circuit board, and the circuit board comprises:

• at least two sub-boards that are spaced apart, the at least two sub-boards extend in a first direction and are arranged in a second direction, the first direction and the second direction cross each other, each sub-board comprises a connection part, the connection parts of adjacent sub-boards are connected to each other to form a common connection part, and the common connection part extends in the second direction;
• wherein a plurality of functional devices and at least one driver chip are fastened on each sub-board, each sub-board is divided into a plurality of partitions, and each partition comprises at least one functional device;
• and
• wherein the circuit board further comprises a plurality of driving groups, each driving group comprises one driver chip and at least two partitions, and the one driver chip of each driving group is configured to independently drive each partition in the corresponding driving group;
• and
• wherein the plurality of driving groups comprises a first driving group, and the one driver chip and the at least two partitions in the first driving group are located on a same sub-board.