Abstract:
Disclosed are a keypad and a keypad assembly for providing increased flexibility. The disclosed keypad includes a base film having button parts formed on the base film, a light guide layer into which light is guided, and electronic paper which is illuminated by light emitted from the light guide layer, and displays at least one symbol, wherein the electronic paper includes metal areas corresponding to the button parts and non-metal areas disposed between the metal areas so as to provide flexibility for the electronic paper. The flexibility of the electronic paper, which can be achieved by the keypad and the keypad assembly, improves the click-feeling to a user when the button parts are pressed.
Abstract:
A keypad assembly using a waveguide for guiding lights emitted from light emitting devices is disclosed. The keypad assembly includes a switch board having a plurality of dome switches. The keypad also includes a plurality of key buttons; a plurality of light emitting devices included in the switch board; a waveguide formed under the key buttons, the waveguide having a predetermined refractive index to allow lights emitted from the light emitting devices to travel according to an internal total reflection condition; a plurality of reflecting patterns formed in the waveguide to reflect the light traveling through the waveguide toward the key buttons; and an auxiliary layer formed on the surface of the waveguide, the auxiliary layer having lower refractive index than that of the waveguide to make a constant total reflection condition.
Abstract:
A touch screen and a method for controlling the touch screen are provided. The touch screen includes a user interface including a display area and at least one soft key; a touch sensor unit disposed under the display area and the at least one soft key of the user interface, for sensing a touch on the display area or the at least one soft key; a display unit disposed under the touch sensor unit, for outputting a display screen; a first electromagnetic sensor unit disposed under the display unit, for sensing an electromagnetic field incident on the display area; and a second electromagnetic sensor unit physically separated from the first electromagnetic sensor unit, for sensing at least one electromagnetic field incident on the at least one soft key.
Abstract:
Disclosed is a keypad assembly including a light guide panel, light, at least one light extracting pattern provided on the light guide panel so that light propagating inside the light guide panel is directed out of the light guide panel, a switch board having at least one switch; and at least one light source for coupling light to the inside of the light guide panel, wherein the light guide panel has a thickness of 0.03-0.6 mm.
Abstract:
Disclosed are a keypad and a keypad assembly for providing increased flexibility. The disclosed keypad includes a base film having button parts formed on the base film, a light guide layer into which light is guided, and electronic paper which is illuminated by light emitted from the light guide layer, and displays at least one symbol, wherein the electronic paper includes metal areas corresponding to the button parts and non-metal areas disposed between the metal areas so as to provide flexibility for the electronic paper. The flexibility of the electronic paper, which can be achieved by the keypad and the keypad assembly, improves the click-feeling to a user when the button parts are pressed.
Abstract:
Disclosed is a keypad which can realize uniform and bright illumination, small power consumption and low manufacturing cost. The keypad includes a light guide layer through which light travels, at least one key button disposed on an upper surface of the light guide layer, a lower elastic layer disposed on a lower surface of the light guide layer, located opposite the upper surface, and at least one reflective pattern formed on the light guide layer and partially reflecting light traveling through the light guide layer toward the key button.
Abstract:
A reflection-type display apparatus that includes cavities dispersed on a light guide plate and is a type of flexible thin film, and a method for manufacturing a light guide plate. The reflection-type display apparatus includes: a reflection-type display; a light source provided on one side of the reflection-type display; a light guide plate bonded to the upper surface of the reflection-type display to scatter light introduced from the light source and having cavities transversely and longitudinally disposed by predetermined intervals on the upper surface thereof; and a film bonded to the upper surface of the light guide plate to protect the upper surface of the light guide plate.
Abstract:
Disclosed is a keypad assembly including a light guide panel, light, at least one light extracting pattern provided on the light guide panel so that light propagating inside the light guide panel is directed out of the light guide panel, a switch board having at least one switch; and at least one light source for coupling light to the inside of the light guide panel, wherein the light guide panel has a thickness of 0.03-0.6 mm.
Abstract:
A keypad assembly having a light leakage prevention structure includes a switch board having at least one switch; a light guide panel mounted on the switch board, light propagating inside the light guide panel; and a first light blocking member stacked on a lateral surface of the light guide panel, the first light blocking member extending to the switch board and reflecting or absorbing incident light.
Abstract:
A keypad assembly of electronic equipment includes a plurality of light emitting units, a light guide plate guiding light emitted from the light emitting units, a plurality of key buttons formed on a top surface of the light guide plate and including numeral and character key plates, a plurality of reflection patterns formed on the light guide plate and reflecting light toward the key buttons, a plurality of protrusions formed under the reflection patterns, a switch substrate including a plurality of switches corresponding to the protrusions, a first optical filter layer formed under the numeral key plates and converting the light emitted from the light emitting units into light of various colors according to wavelengths of the light emitted from the light emitting units, and a second optical filter layer formed under the character key plates and blocking violet wavelength light and transmit light having other wavelengths.