Abstract: A method for forming a semiconductor structure includes forming strip patterns over a semiconductor substrate, forming a hard mask layer over the strip patterns, and forming a patterned photoresist layer over the hard mask layer. The patterned photoresist layer has a plurality of first openings. The method also includes etching the hard mask layer using the patterned photoresist layer. Remaining portions of the hard mask layer form a plurality of pillar patterns that are separated from one another. The method also includes depositing a dielectric layer along the plurality of pillar patterns, etching the dielectric layer to form a plurality of second openings, removing the plurality of pillar patterns to form a plurality of third openings in the dielectric layer, and etching the strip patterns using the dielectric layer as a mask.

Abstract: The invention discloses a backlight apparatus. The backlight apparatus includes a power source, a lamp, a balance transformer, a detecting circuit, a judging module, and a controlling module. The balance transformer includes a primary winding electrically connected to the power source and a secondary winding corresponding to the primary winding and electrically connected to the lamp. The detecting circuit is used for detecting a current generated by the secondary winding and generating a first voltage according to the current. The judging module is used for judging whether the value of the first voltage is smaller than a default value. The controlling module is used for controlling the power source according to a judgment made by the judging module.

Abstract: The invention discloses a backlight apparatus. The backlight apparatus includes a power source, a lamp, a balance transformer, a detecting circuit, a judging module, and a controlling module. The balance transformer includes a primary winding electrically connected to the power source and a secondary winding corresponding to the primary winding and electrically connected to the lamp. The detecting circuit is used for detecting a current generated by the secondary winding and generating a first voltage according to the current. The judging module is used for judging whether the value of the first voltage is smaller than a default value. The controlling module is used for controlling the power source according to a judgment made by the judging module.

Abstract: The invention discloses a multi-lamp backlight apparatus. The multi-lamp backlight apparatus includes a first lamp, a second lamp, a controlling unit, a resonating unit, and a balance transformer. The controlling unit is used for generating a controlling signal. The resonating unit is used for converting the controlling signal into a resonating signal. The balance transformer includes a primary winding, a first secondary winding, and a second secondary winding. The primary winding is used for receiving the resonating signal. The first secondary winding is corresponding to the primary winding and coupled to the first lamp. The second secondary winding is corresponding to the primary winding and coupled to the second lamp.