An image display apparatus comprising: a display ; a memory storing one or more instructions; and a processor configured to execute the one or more instructions stored in the memory , wherein the instructions, when executed by the processor , cause the image display apparatus to: perform a first channel search comprising identifying one or more first valid frequencies in which a signal exists from among a plurality of frequencies available in a corresponding region as a background operation, while simultaneously performing at least one of initial setting operations of the image display apparatus , perform a channel search condition setting operation among the initial setting operations to obtain a channel search condition comprising a type of broadcast signal and a channel type, in response to the channel search condition being obtained through the channel search condition setting operation, perform a second channel search comprising identifying at least one valid channel , each corresponding to second valid frequencies satisfying the obtained channel search condition, from among the one or more first valid frequencies identified through the first channel search, and display a result of the second channel search on the display . a display ; a memory storing one or more instructions; and a processor configured to execute the one or more instructions stored in the memory , wherein the instructions, when executed by the processor , cause the image display apparatus to: perform a first channel search comprising identifying one or more first valid frequencies in which a signal exists from among a plurality of frequencies available in a corresponding region as a background operation, while simultaneously performing at least one of initial setting operations of the image display apparatus , perform a channel search condition setting operation among the initial setting operations to obtain a channel search condition comprising a type of broadcast signal and a channel type, in response to the channel search condition being obtained through the channel search condition setting operation, perform a second channel search comprising identifying at least one valid channel , each corresponding to second valid frequencies satisfying the obtained channel search condition, from among the one or more first valid frequencies identified through the first channel search, and display a result of the second channel search on the display . perform a first channel search comprising identifying one or more first valid frequencies in which a signal exists from among a plurality of frequencies available in a corresponding region as a background operation, while simultaneously performing at least one of initial setting operations of the image display apparatus , perform a channel search condition setting operation among the initial setting operations to obtain a channel search condition comprising a type of broadcast signal and a channel type, in response to the channel search condition being obtained through the channel search condition setting operation, perform a second channel search comprising identifying at least one valid channel , each corresponding to second valid frequencies satisfying the obtained channel search condition, from among the one or more first valid frequencies identified through the first channel search, and display a result of the second channel search on the display . <EOS>