Abstract: A driving device and a driving method for a backlight module are provided. The driving device includes a current-to-voltage converter, a first LED driver, a second LED driver, and a switch. The current-to-voltage converter generates a control voltage corresponding to a control current of a first driving channel of the first LED driver. A control terminal of the switch is coupled to the current-to-voltage converter to receive the control voltage. A first terminal of the switch is configured to be coupled to a voltage source. A second terminal of the switch is configured to be coupled to a first terminal of a first light-emitting element of a backlight module. A second driving channel of the second LED driver is configured to be coupled to a second terminal of the first light-emitting element of the backlight module.

Abstract: The present invention provides a polymerizable composition, comprising, based on the total weight of the polymerizable composition: (a) 1-90 wt % of a monomer of a formula (I): wherein X1 is H or methyl; X2 is H or C1-C2 alkyl; X is O or S; R1 is C1-C12 straight or branched alkylene or alkoxylene; and d and n are each independently an integer of 0 to 3; and (b) 0.1-10 wt % of a photo-initiator. The present invention also provides an optical film comprising a coating formed from the above polymerizable composition. The optical film can be used in backlight units for displays as a brightness enhancement film.

Abstract: The present invention provides a polymerizable composition, which comprises: (a) at least one monomer of formula (I): (b) a photo-initiator, wherein X1, X2, Y1, Y2, Y3, Y4, a, and b are as defined in the specification and the amount of the monomer of formula (I) is at least 1 wt %, based on the total weight of the polymerizable composition. The present invention also provides an optical film comprising a coating layer formed from the above polymerizable composition. The optical film can be used in backlight modules of displays as a brightness enhancement film.