Method of driving light source, light source module for performing the method and display apparatus having the light source module

摘要

A method of driving a light source includes receiving an alternating current (“AC”) voltage from outside, generating a first direct current (“DC”) voltage based on the AC voltage, generating a second DC voltage, corresponding to a difference between a driving voltage of a light source part and the first DC voltage, based on the first DC voltage, and outputting a sum of the first DC voltage and the second DC voltage to the light source part.

主权项

1. A method of driving a light source, the method comprising:
receiving an alternating current (AC) voltage from outside; generating a first direct current (DC) voltage based on the AC voltage; generating a second DC voltage, corresponding to a difference between a driving voltage of a light source part and the first DC voltage, based on the first DC voltage; and outputting a sum of the first DC voltage and the second DC voltage to the light source part, wherein the second DC voltage is generated using a DC/DC converter, and the DC/DC converter comprises:
a first input terminal which receives the first DC voltage;a second input terminal which receives a ground voltage;a first output terminal which outputs the sum of the first DC voltage and the second DC voltage; anda second output terminal connected to the first input terminal.