Abstract: A serial LED driver with a built-in calibratable parameter transmits a grayscale vector, a calibration parameter matrix or an appropriate current value vector and includes: a nonvolatile memory receiving and storing the calibratable parameter; a calibration matrix processing unit reads elements corresponding to the LED lamp bead and being pre-stored in the calibration parameter matrix of the nonvolatile memory, receives the grayscale vector, and performs matrix computation according to the grayscale vector and the calibration parameter matrix to generate a new grayscale vector; and a pulse width modulation circuit, which outputs a constant current to the LED lamp bead according to the first new grayscale vector to adjust the LED lamp bead; or outputs another corresponding constant current to adjust the LED lamp bead according to the new grayscale vector and the appropriate current value vector corresponding to the LED lamp bead and being pre-stored in the nonvolatile memory.

Abstract: A serial LED driver with a built-in calibratable parameter transmits a grayscale vector, a calibration parameter matrix or an appropriate current value vector and includes: a nonvolatile memory receiving and storing the calibratable parameter; a calibration matrix processing unit reads elements corresponding to the LED lamp bead and being pre-stored in the calibration parameter matrix of the nonvolatile memory, receives the grayscale vector, and performs matrix computation according to the grayscale vector and the calibration parameter matrix to generate a new grayscale vector; and a pulse width modulation circuit, which outputs a constant current to the LED lamp bead according to the first new grayscale vector to adjust the LED lamp bead; or outputs another corresponding constant current to adjust the LED lamp bead according to the new grayscale vector and the appropriate current value vector corresponding to the LED lamp bead and being pre-stored in the nonvolatile memory.