Abstract: The present invention provides a pharmaceutical composition for prevention or treatment of a stress disease and depression, the pharmaceutical composition be safely useable without toxicity and side effects by using an extract of leaves of Vaccinium bracteatum Thunb., which is natural resource of Korea, so that the reduction of manufacturing and production costs and the import substitution and export effects can be expected through the replacement of a raw material for preparation with a plant inhabiting in nature.

Abstract: An electroluminescent display device includes an electroluminescent display device includes a substrate; a first pixel row on the substrate including a first plurality of pixels arranged along a first direction; a second pixel row on the substrate including a second plurality of pixels arranged along the first direction, the second pixel row being spaced apart from the first pixel row in a second direction; a first groove between the first and second pixel rows; and a light emitting diode in each pixel of the first and second pixel rows, wherein the first groove includes a first portion at one end of the first pixel row, a second portion at the other end of the first pixel row and a third portion between the first and second portions, and wherein third portion is smaller than the first portion and greater than the second portion.

Abstract: The present disclosure relates to a non-contact switch. More particularly, the non-contact switch includes a button which is disposed at a predetermined position of a housing and operated by an external pressure while being formed, at one end portion thereof, with a magnetic substance; a magnetic field sensor device which is accommodated in the housing to face the magnetic substance and generates an induced voltage depending on an interval between the magnetic field sensor device and the magnetic substance; and a semiconductor device which is driven by the induced voltage generated at the magnetic field sensor device to switch power supplied from a separate battery to a separate load.

Abstract: The present disclosure relates to a non-contact switch. More particularly, the non-contact switch includes a button which is disposed at a predetermined position of a housing and operated by an external pressure while being formed, at one end portion thereof, with a magnetic substance; a magnetic field sensor device which is accommodated in the housing to face the magnetic substance and generates an induced voltage depending on an interval between the magnetic field sensor device and the magnetic substance; and a semiconductor device which is driven by the induced voltage generated at the magnetic field sensor device to switch power supplied from a separate battery to a separate load.