Abstract: A display device including a pixel electrode, and a pixel circuit electrically connected to the pixel electrode. The pixel circuit includes a first transistor including sub-transistors electrically connected to each other through a first common node, a second transistor including sub-transistors electrically connected to each other through a second common node, a first electrode electrically connecting the first common node with the second common node, and a second electrode disposed to overlap the first electrode and electrically connected to a direct current power source.

Abstract: An apparatus for measuring the fatigue of a user includes a first sensor configured to sense a factor causing the fatigue of a user; a second sensor configured to sense a brain wave signal of the user; and a processor configured to calculate a primary fatigue of the user based on the factor sensed by the first sensor, to calculate a secondary fatigue of the user based on the brain wave signal sensed by the second sensor, and to measure the fatigue of the user by using the primary fatigue and the secondary fatigue.

Abstract: An apparatus for reducing a blow-by gas for a vehicle includes an electromagnet disposed in a cylinder block of an engine and producing a magnetic field with respect to a piston when an electric current is applied thereto. An oil ring is inserted into an outer diameter of the piston to be expandable in an outer diameter direction of the piston by an absorption force of the electromagnet. A controller is controlled by an ECU and applies the electric current to the electromagnet.