Abstract: A pulse width modulation (PWM) driver and an operation method thereof are provided. The PWM driver includes a PWM generating circuit and multiple driving channels. The PWM generating circuit generates multiple PWM signals. The driving channels drive multiple light emitting elements of a light emitting element array. Each of the driving channels includes a PWM selection circuit. The PWM selection circuits are coupled to the PWM generating circuit to receive the PWM signals. Each of the PWM selection circuits selects a PWM signal from the PWM signals according to corresponding sub-pixel data. The selected PWM signal is output to at least one corresponding light emitting element among the light emitting elements.

Abstract: A pulse width modulation (PWM) driver and an operation method thereof are provided. The PWM driver includes a PWM generating circuit and multiple driving channels. The PWM generating circuit generates multiple PWM signals. The driving channels drive multiple light emitting elements of a light emitting element array. Each of the driving channels includes a PWM selection circuit. The PWM selection circuits are coupled to the PWM generating circuit to receive the PWM signals. Each of the PWM selection circuits selects a PWM signal from the PWM signals according to corresponding sub-pixel data. The selected PWM signal is output to at least one corresponding light emitting element among the light emitting elements.

Abstract: An equalizing method for a driving device includes determining whether a polarity of an output voltage changes from a first time period to a second time period according to an inversion method of a display device coupled to the driving device, for generating a polarity inversion signal; and determining whether to perform an equalization operation on the output voltage in a switching period between the first time period and the second time period according to the polarity inversion signal, current line information and previous line information.

Abstract: A driving apparatus of a liquid crystal display (LCD) panel including a source driving unit and a channel selection unit is provided. The source driving unit is configured to drive the LCD panel and includes a plurality of data driving channels and at least one dummy driving channel. The channel selection unit is coupled to the source driving unit. The channel selection unit outputs driving signals of a part of the data driving channels and the at least one dummy driving channel to drive the LCD panel based on a testing result under a normal operation. Alternatively, the channel selection unit outputs the driving signals of the data driving channels to drive the LCD panel based on the testing result under the normal operation.