COF circuit board, display device, signal processing method and bridging chip

1. A COF circuit board, comprising a flexible circuit board, a driver integrated circuit and a bridging chip, wherein the driver integrated circuit and the bridging chip are disposed on the flexible circuit board, the bridging chip is located outside the driver integrated circuit, the flexible circuit board is provided with a first connecting terminal configured to be connected to a display panel and a second connecting terminal configured to be connected to a device main board, and an output end of the driver integrated circuit is electrically connected to the first connecting terminal; and

the bridging chip comprises N first registers, M second registers and a controller, the N first registers are electrically connected to an input end of the driver integrated circuit, the M second registers are electrically connected to the second connecting terminal, the controller is configured to obtain a register corresponding relationship and write values in the M second registers into the corresponding N first registers according to the register corresponding relationship, the register corresponding relationship comprises a corresponding relationship between the N first registers and the M second registers, and M and N are both positive integers;

wherein when there exists the corresponding relationship that one second register corresponds to two or more first registers, the value in such one second register is written into the two or more corresponding first registers simultaneously.

2. The COF circuit board according to claim 1 , wherein the bridging chip further comprises a timing sequence control line, the timing sequence control line is configured to obtain a timing sequence control signal, and the controller is configured to determine the corresponding relationship between the N first registers and the M second registers according to the timing sequence control signal.

3. The COF circuit board according to claim 1 , wherein the corresponding relationship between the N first registers and the M second registers is the corresponding relationship between the N first registers and at least part of the M second registers.

4. The COF circuit board according to claim 1 , wherein in the register corresponding relationship, each of the M second registers corresponds to at least one of the N first registers.

5. The COF circuit board according to claim 1 , wherein the second connecting terminal is a zero insert force (ZIF) pluggable terminal.

6. The COF circuit board according to claim 1 , wherein the input end of the driver integrated circuit comprises N input terminals, and the N input terminals and the N first registers are correspondingly connected one to one.

7. A display device, comprising the COF circuit board according to claim 1 and further comprising a display panel, wherein the first connecting terminal is connected to the display panel.

8. A signal processing method, comprising:

obtaining a register corresponding relationship, wherein the register corresponding relationship comprises a corresponding relationship between N first registers in a bridging chip and M second registers in the bridging chip, and M and N are both positive integers; and

writing values in the M second registers into the corresponding N first registers according to the register corresponding relationship,

wherein the N first registers are electrically connected to an input end of a driver integrated circuit disposed on a flexible circuit board included by a display device, the bridging chip is located outside the driver integrated circuit, the driver integrated circuit and the bridging chip are disposed on the flexible circuit board, an output end of the driver integrated circuit is electrically connected to a first connecting terminal configured to be connected to a display panel and disposed on the flexible circuit board, and the M second registers are electrically connected to a second connecting terminal configured to be connected to a device main board and disposed on the flexible circuit board;

wherein when there exists the corresponding relationship that one second register corresponds to two or more first registers, the value in such one second register is written into the two or more corresponding first registers simultaneously.

9. The method according to claim 8 , wherein obtaining a register corresponding relationship comprises:

obtaining a timing sequence control signal; and

determining the corresponding relationship between the N first registers and the M second registers according to the timing sequence control signal.

10. The method according to claim 9 , wherein determining the corresponding relationship between the N first registers and the M second registers according to the timing sequence control signal comprises:

obtaining a corresponding relationship between an index value and a preset corresponding relationship, wherein the preset corresponding relationship comprises a corresponding relationship between one of the M second registers and at least one of the N first registers;

determining the index value in the timing sequence control signal; and

determining the corresponding relationship between one of the M second registers and at least one of the N first registers according to the index value of the timing sequence control signal and the corresponding relationship between the index value and the preset corresponding relationship.

11. The method according to claim 8 , wherein the corresponding relationship between the N first registers and the M second registers is the corresponding relationship between the N first registers and at least part of the M second registers.

12. The method according to claim 8 , wherein in the register corresponding relationship, each of the M second registers corresponds to at least one of the N first registers.

13. A bridging chip, comprising N first registers, M second registers and a controller, wherein the N first registers are configured to be electrically connected to an input end of a driver integrated circuit of a display panel, the bridging chip is located outside the driver integrated circuit, the driver integrated circuit and the bridging chip are disposed on a flexible circuit board, the M second registers are configured to be electrically connected to a device main board, the controller is configured to obtain a register corresponding relationship and write values in the M second registers into the corresponding N first registers according to the register corresponding relationship, the register corresponding relationship comprises a corresponding relationship between the N first registers and the M second registers, and M and N are both positive integers;

wherein when there exists the corresponding relationship that one second register corresponds to two first registers, the value in such one second register is written into the two or more corresponding first registers simultaneously.

14. The bridging chip according to claim 13 , further comprising a timing sequence control line, wherein the timing sequence control line is configured to obtain a timing sequence control signal, and the controller is configured to determine the corresponding relationship between the N first registers and the M second registers according to the timing sequence control signal.

15. The bridging chip according to claim 13 , wherein the input end of the driver integrated circuit comprises N input terminals, and the N input terminals and the N first registers are correspondingly connected one to one.

16. The bridging chip according to claim 13 , wherein the controller is configured to: obtain a timing sequence control signal; and determine the corresponding relationship between the N first registers and the M second registers according to the timing sequence control signal.

17. The bridging chip according to claim 16 , wherein the controller is configured to: obtain a corresponding relationship between an index value and a preset corresponding relationship, wherein the preset corresponding relationship comprises a corresponding relationship between one of the M second registers and at least one of the N first registers; determine the index value in the timing sequence control signal; and determine the corresponding relationship between one of the M second registers and at least one of the N first register according to the index value of the timing sequence control signal and the corresponding relationship between the index value and the preset corresponding relationship.