Abstract: The present invention provides a photosensitive composition comprising a copolymer of an organometallic compound and polysiloxane that may be used in a photosensitive material for a display or semiconductor, and a method for preparing the same.

Abstract: An audio signal control method and apparatus for hearing protection are disclosed. The audio signal control method includes: producing an output level of an audio signal being input; determining whether the ratio of an output time of the audio signal within a preset time duration to a permissible time corresponding to the produced output level is greater than or equal to a limit reference value; and limiting, when the ratio of the output time to the permissible time is greater than or equal to the limit reference value, the output level of the audio signal to a preset level.

Abstract: A touch sensor unit and a method of controlling the sensitivity of the touch sensor include a supporting substrate, a touch sensor disposed on the supporting substrate, a cover having a three-dimensional form disposed on the touch sensor, and a control unit controlling the sensitivity of the touch sensor by applying weighted values to the sensitivity, wherein the sensitivity corresponds to three-dimensional location data of the cover.