Abstract: A wiper driving apparatus according to embodiments comprises: a sensor unit including a carbon micro coil; a precipitation amount sensing unit for outputting an output value corresponding to the value of a difference between a first frequency and a preset second frequency according to a change in the impedance value of the sensor unit; and a control unit for determining whether there is precipitation and the amount of precipitation by using the output value output through the precipitation amount sensing unit, and determining wiper driving conditions according to the determined results, wherein the first frequency is changed to correspond to a change in the inductance value of the carbon micro coil according to whether there is precipitation and the amount of precipitation.

Abstract: A wiper driving apparatus according to embodiments comprises: a sensor unit including a carbon micro coil; a precipitation amount sensing unit for outputting an output value corresponding to the value of a difference between a first frequency and a preset second frequency according to a change in the impedance value of the sensor unit; and a control unit for determining whether there is precipitation and the amount of precipitation by using the output value output through the precipitation amount sensing unit, and determining wiper driving conditions according to the determined results, wherein the first frequency is changed to correspond to a change in the inductance value of the carbon micro coil according to whether there is precipitation and the amount of precipitation.

Abstract: A multi-layered image display device for realizing a multi-layered image with a depth by overlapping a plurality of two-dimensional images includes: a display which can be selectively transparent and produce a first two-dimensional image through a combination of a plurality of pixels, a screen which is disposed behind the display so as to be overlapped in a forward-backward direction with the display; and a projector which is disposed behind the screen so as to project a second two-dimensional image on the screen. By adopting a screen and a projector instead of a rear display and a backlight unit, the cross stripes of the rear display can be removed so as to prevent the occurrence of the interference pattern (Moire phenomenon) due to the interference of different pixel patterns, and an additional diffuse layer can be omitted so that an assembling process of the multi-layer image display device can be simplified.

Abstract: A curved-surface display panel fabrication method for fabricating a curved display panel having a desired curved shape using a flat display panel having a first substrate and a second substrate, includes: paring partially outer surfaces of the first substrate and the second substrate so as to reduce thicknesses thereof to a predetermined thickness; and attaching a reinforcing plate having the same shape with the desired curved shape and light transmitting characteristics to the display panel using an adhesive layer which is formed on at least a portion of edge portions of the display panel in a state that the pared flat display panel is bent to the desired curved shape.

Abstract: A curved-surface display panel fabrication method for fabricating a curved-surface display panel using a flat display panel having a first substrate and a second substrate includes: paring partially outer surfaces of the first substrate and the second substrate so as to reduce thicknesses thereof to a predetermined thickness; bending the pared flat display panel to a desired curved shape; attaching a first guide member which has a shape corresponding to the desired curved shape to the first substrate with a predetermined gap from the pared outer surface thereof and attaching a second guide member with has a shape corresponding to the desired curved shape to the second substrate with a predetermined gap from the pared outer surface thereof; and forming light transmitting reinforcing layers respectively in a space between the first guide member and the first substrate and a space between the second guide member and the second substrate.

Abstract: A curved display panel manufacturing method for manufacturing a curved display panel having a curved shape using a flat display panel having a first substrate and a second substrate facing one another includes: paring partially outer portions of the first substrate and the second substrate so as to reduce thicknesses thereof to predetermined thicknesses; and forming fixing layers at edge areas which are not bent in a state of being bent to the desired curved shape among the edge areas of the first substrate and the second substrate.

Abstract: A display device includes: a first liquid crystal display device; a second liquid crystal display device which is disposed behind the first liquid crystal display device to be overlapped in a forward/rearward direction; and a light diffusion plate which is disposed between the first and second liquid crystal display devices. The first liquid crystal display device includes: a liquid crystal panel; a color filter plate which is disposed in front of the liquid crystal panel, a predetermined region of the color filter plate being removed; a polarizer plate which is disposed at a front and/or a rear of the liquid crystal panel; and a light source which is disposed behind the liquid crystal panel. The light diffusion plate is disposed between the first liquid crystal display device and the second liquid crystal display device to be overlapped with an area including the predetermined region in a forward/rearward direction.

Abstract: A curved surface display device includes: a grayscale image projection device which projects a grayscale image; and a color filter disposed in front of the grayscale image projection device and having a desired curved shape. By disposing a color filter having a curved shape in front of a grayscale image projection device, a curved surface display device displaying color images can be realized through a simple structure.

Abstract: A curved-surface display panel fabrication method for fabricating a curved display panel having a desired curved shape using a flat display panel having a first substrate and a second substrate, includes: paring partially outer surfaces of the first substrate and the second substrate so as to reduce thicknesses thereof to a predetermined thickness; and attaching a reinforcing plate having the same shape with the desired curved shape and light transmitting characteristics to the display panel using an adhesive layer which is formed on at least a portion of edge portions of the display panel in a state that the pared flat display panel is bent to the desired curved shape.

Abstract: A game machine includes: a cable capable of transmitting electric power and data signal; one or more function modules which are connected to the cable and are configured to perform a predetermined function respectively; and a main controller which generates data signal for controlling the function modules and transmits the generated data signal and electric power supplied from outside to the function modules via the cable. Since data signal such as image signal or audio signal and electric power are combined and are then transmitted via one cable, the data signal wiring and the electric power wiring between the main controller and the function module of a game machine can be unified as one, so wiring can be simplified. Accordingly, manufacturing and maintenance become easy and cost for the same can also be saved.

Abstract: A multi-layered image display device for realizing a multi-layered image with a depth by overlapping a plurality of two-dimensional images includes: a display which can be selectively transparent and produce a first two-dimensional image through a combination of a plurality of pixels, a screen which is disposed behind the display so as to be overlapped in a forward-backward direction with the display; and a projector which is disposed behind the screen so as to project a second two-dimensional image on the screen. By adopting a screen and a projector instead of a rear display and a backlight unit, the cross stripes of the rear display can be removed so as to prevent the occurrence of the interference pattern (Moire phenomenon) due to the interference of different pixel patterns, and an additional diffuse layer can be omitted so that an assembling process of the multi-layer image display device can be simplified.

Abstract: A curved-surface display panel fabrication method for fabricating a curved-surface display panel using a flat display panel having a first substrate and a second substrate includes: paring partially outer surfaces of the first substrate and the second substrate so as to reduce thicknesses thereof to a predetermined thickness; bending the pared flat display panel to a desired curved shape; attaching a first guide member which has a shape corresponding to the desired curved shape to the first substrate with a predetermined gap from the pared outer surface thereof and attaching a second guide member with has a shape corresponding to the desired curved shape to the second substrate with a predetermined gap from the pared outer surface thereof; and forming light transmitting reinforcing layers respectively in a space between the first guide member and the first substrate and a space between the second guide member and the second substrate.

Abstract: A multi-layer image display device for realizing a multi-layered image with a depth by overlapping a plurality of two-dimensional images includes: a plurality of screens which are disposed to be overlapped in a forward-backward direction; and one or more projectors which are disposed behind the plurality of the screens to selectively project one or more two-dimensional images on the screens. By using a screen and a projector, the cross stripes of the display can be fundamentally removed so as to prevent the occurrence of the interference pattern (Moire phenomenon) due to the interference of different pixel patterns, and an additional diffuse layer can be omitted so that an assembling process of the multi-layer image display device can be simplified.

Abstract: There is provided the touch panel by optics unit sensor that realizes one system of touch panel in all view angles, that is, from a small touch region to a large touch region, prevents a scratch from affecting on the surface of the display panel forming the touch region, enables the uniform sensing operation, and an accurate calculation of the touch distance and improves the response speed. The touch panel is designed, without the coating layer for conduction which is needed in each conventional touch panel, and has high durability, high optical transmittance and high resolution.

Abstract: A handle assembly for a vacuum cleaner having an improved rotating connection portion which is capable of rotatably connecting a rigid wand with a flexible hose of the vacuum cleaner, which has a simple internal structure, and can be manufactured at a low cost. The rotating connection portion is disposed between a connector for separably receiving an end of a rigid wand and a flexible hose of the vacuum cleaner. A suction control switch is installed in one side of the rotating connection portion. A first annular groove is formed through an outer periphery of a distal end of the connector, and an elastic C-shaped ring is inserted into and fixed in the first annular groove. A second annular groove is formed through an inner periphery of a front end of the rotating connection portion. When the distal end is inserted into the front end, C-shaped ring is elastically inserted into the second annular groove.

Abstract: An electric power switch for a vacuum cleaner which is capable of applying an electric voltage to a motor of the vacuum cleaner, capable of controlling a suction force which is established by the motor, is convenient to use, and can be manufactured at a low cost. An air suction passage for introducing an atmospheric air into a handle of the vacuum cleaner extends from a one side wall of a pipe hose toward a cover of the handle in order to communicate with the pipe hose. An operation knob is disposed in a space between the air suction passage and the cover and allows the air suction passage to selectively communicate with an air suction port, which is formed through the cover. A first supporting member for slideably supporting the operation knob extends from a bottom wall of the handle toward the cover up to an upper surface of the air suction passage. A plurality of locking grooves for setting a displacement of the operation knob are formed on an upper surface of the first supporting member.