Abstract: A display device includes: a base substrate; a first pixel electrode, a second pixel electrode, and a third pixel electrode arranged on the base substrate to be spaced apart from each other; a pixel defining film on the first pixel electrode, the second pixel electrode, and the third pixel electrode and including a first opening exposing the first pixel electrode, a second opening exposing the second pixel electrode and spaced apart from the first opening, and a third opening exposing the third pixel electrode and spaced apart from the first opening and the second opening; a first organic layer on the first pixel electrode exposed by the first opening; a second organic layer on the second pixel electrode exposed by the second opening; and a third organic layer on the third pixel electrode exposed by the third opening.

Abstract: The present invention relates to a martial art training tool that emits when hit. The martial art training tool includes a light emitting sensor module which is detachably mounted therein and emits light in response to a punch or kick applied to a training body manufactured for martial art training. Thus, when the martial art training tool is used, trainees or players can immediately check a punch or kick during training or game, which makes it possible to increase concentration. Furthermore, since the martial art training tool can be used for a long time by replacing the light emitting sensor module, the maintenance cost may be reduced.

Abstract: The golf ball liner includes a fixing member having a predetermined shape to house a golf ball, and including fixing pads disposed at both ends of the fixing member to hold the golf ball not to move, a rotating member having a shape identical to that of the fixing member and a diameter smaller than that of the fixing member, and including both ends rotatably supported by the respective ends of the fixing member, and at least one pen disposed at an inner side of the rotating member to contact the golf ball for drawing a line on a surface of the golf ball along a circumference of the golf ball when the rotating member rotates around the golf ball.