Abstract: The present disclosure relates to an apparatus and a method for detecting an abnormality of a tool of a machine tool, and more particularly, to an apparatus and a method for correcting backlash of a machine tool, which are capable of repeatedly measuring a load of a workpiece transferring unit or a workpiece machining unit, and automatically detecting an abnormality of a tool based on a normal range of load data that are proportional to a standard deviation of the load data measured based on any one of a mode value, a mean value, or a median value of the repeatedly measured load data.

Abstract: A display device comprises: a first substrate; LED light sources mounted on the first substrate; a backlight unit comprising a side surface on which light emitted from the LED light sources is incident and a back surface from which light is emitted in a direction different from the direction of the light incident on the side surface; and a panel disposed on the backlight unit and displaying a video image, wherein at least the first and second LED light sources adjacent to each other, among the LED light sources on the first substrate, are controlled differently from the other LED light sources on the first substrate based on the video image.

Abstract: A display device comprises: a first substrate; LED light sources mounted on the first substrate; a backlight unit comprising a side surface on which light emitted from the LED light sources is incident and a back surface from which light is emitted in a direction different from the direction of the light incident on the side surface; and a panel disposed on the backlight unit and displaying a video image, wherein at least the first and second LED light sources adjacent to each other, among the LED light sources on the first substrate, are controlled differently from the other LED light sources on the first substrate based on the video image.