Backlight module and operation method thereof
View Patent ↗A backlight module is provided. The backlight module includes a backlight control circuit and a plurality of multiple light-emitting elements coupled in series and coupled to the backlight control circuit. The backlight control circuit transmits a packet. Each of the light-emitting elements compares an address of the packet with an individual address of each of the light-emitting elements. When the address of the packet matches the individual address of a target light-emitting element of the light-emitting elements, the target light-emitting element emits light according to a light-emitting data of the packet. Each of the light-emitting elements transmits the packet to a next light-emitting element.
1. A backlight module, comprising:
a backlight control circuit; and
a plurality of light-emitting elements coupled in series and coupled to the backlight control circuit,
wherein, the backlight control circuit transmits a packet;
each of the light-emitting elements compares an address of the packet with an individual address of each of the light-emitting elements;
when the address of the packet matches the individual address of a target light-emitting element of the light-emitting elements, the target light-emitting element emits light according to a light-emitting data of the packet;
each of the light-emitting elements transmits the packet to a next light-emitting element;
the backlight control circuit and the light-emitting elements are powered in parallel;
the address of the packet and the light-emitting data of the packet are controlled according to a sequence in timing; and
after the packet is outputted, the packet sequentially passes through the light-emitting elements, wherein a counting value is added whenever the packet passes through one of the light-emitting elements.
2. The backlight module according to claim 1 , wherein, when the address of the packet does not match the individual address of the target light-emitting element, the target light-emitting element abandons the packet; and
when the address of the packet matches the individual address of the target light-emitting element of the light-emitting elements, the target light-emitting element does not transmit the packet to the next light-emitting element but emits light according to the light-emitting data of the packet.
3. The backlight module according to claim 1 , wherein, the light-emitting elements are color light-emitting diodes.
4. The backlight module according to claim 1 , wherein, each of the light-emitting elements comprises a power pin, a data input pin, a data output pin and a ground pin;
the power pins of the light-emitting elements are electrically coupled to a power source;
the data input pin of each of the light-emitting elements is electrically coupled to the data output pin of a previous light-emitting element;
the data output pin of each of the light-emitting elements is electrically coupled to the data input pin of a next light-emitting element; and
the ground pins of the light-emitting elements are grounded.
5. An operation method of a backlight module, comprising:
transmitting a packet;
comparing an address of the packet with an individual address of each of a plurality of light-emitting elements of the backlight module by the light-emitting elements of the backlight module, wherein the light-emitting elements are coupled in series;
when the address of the packet matches the individual address of a target light-emitting element of the light-emitting elements, emitting light by the target light-emitting element according to a light-emitting data of the packet; and
transmitting the packet to a next light-emitting element by each of the light-emitting elements;
wherein the light-emitting elements are powered in parallel;
the address of the packet and the light-emitting data of the packet are controlled according to a sequence in timing; and
after the packet is outputted, the packet sequentially passes through the light-emitting elements, wherein a counting value is added whenever the packet passes through one of the light-emitting elements.
6. The operation method of a backlight module according to claim 5 , wherein, when the address of the packet does not match the individual address of the target light-emitting element, the target light-emitting element abandons the packet; and
when the address of the packet matches the individual address of the target light-emitting element of the light-emitting elements, the target light-emitting element does not transmit the packet to the next light-emitting element but emits light according to the light-emitting data of the packet.
7. The operation method of a backlight module according to claim 5 , wherein, the light-emitting elements are color light-emitting diodes.
8. The operation method of a backlight module according to claim 5 , wherein, each of the light-emitting elements comprises a power pin, a data input pin, a data output pin and a ground pin;
the power pins of the light-emitting elements are electrically coupled to a power source;
the data input pin of each of the light-emitting elements is electrically coupled to the data output pin of a previous light-emitting element;
the data output pin of each of the light-emitting elements is electrically coupled to the data input pin of a next light-emitting element; and
the ground pins of the light-emitting elements are grounded.