Abstract: Disclosed is a screen for displaying information for an optical device which is arranged within an optical path of an optical device. The screen for displaying information includes a transparent organic light-emitting diode (TOLED) which emits light in accordance with power and an input control signal.

Abstract: Disclosed is a screen for displaying information for an optical device which is arranged within an optical path of an optical device. The screen for displaying information includes a transparent organic light-emitting diode (TOLED) which emits light in accordance with power and an input control signal.

Abstract: Disclosed herein is a front light unit including a transparent insulating substrate; a transparent anode electrode disposed on the insulating substrate; a plurality of organic light-emitting elements disposed on the anode electrode; a transparent cathode electrode disposed on the organic light-emitting elements; and a plurality of reflective plates disposed opposite the organic light-emitting elements in an emission direction of the organic light-emitting elements, and disposed between the insulating substrate and the cathode electrode.

Abstract: Disclosed herein is a front light unit including a transparent insulating substrate; a transparent anode electrode disposed on the insulating substrate; a plurality of organic light-emitting elements disposed on the anode electrode; a transparent cathode electrode disposed on the organic light-emitting elements; and a plurality of reflective plates disposed opposite the organic light-emitting elements in an emission direction of the organic light-emitting elements, and disposed between the insulating substrate and the cathode electrode.

Abstract: Disclosed herein is a pixel circuit for an OLED panel, a display device having the pixel circuit and a method of driving the OLED panel. The pixel circuit for an OLED panel includes a switching element driven by a scan signal input through a corresponding one of scan lines sequentially selected from among a plurality of scan lines, and configured to transfer drive current based on luminance data input through a corresponding one of a plurality of data lines. An OLED emits light using the drive current transferred by the switching element. The OLED has an anode connected to a source terminal of the transistor and a cathode connected to a common electrode. Accordingly, problems such as the imbalance and deterioration of luminance attributable to the sequential driving of scan lines can be solved, and the complexity of circuits of a conventional AMOLED panel can be solved.

Abstract: Disclosed herein are a keypad device, a mobile device having the keypad device, and a method of controlling the keypad device. The keypad device includes a touch panel, a Transparent Organic Light-Emitting Diode (TOLED) panel placed under the touch panel, a control unit electrically connected to the touch panel and the TOLED panel, and configured to detect an electric signal related to a touch point of the touch panel and cause a pixel of the TOLED panel corresponding to the touch point to emit light, and a reflective sheet placed under the TOLED panel, patterned with keypad information, and configured to reflect keypad information corresponding to the light emitting pixel of the TOLED panel, thereby displaying this keypad information.

Abstract: Disclosed is a display device which obviates the need for a space to mount an additional sub display, so that a product is made slim and compact. The display device includes an LCD panel or e-paper for displaying main information, a TOLED panel formed on the LCD panel or e-paper and displaying sub information, a touch panel formed on the TOLED panel, and a controller electrically connected to the LCD panel or e-paper, the TOLED panel and the touch panel, in which the controller applies driving voltage to the LCD panel or e-paper so that main information is displayed through the LCD panel or e-paper when an electrical signal of the touch panel is sensed, and applies driving voltage to the TOLED panel so that sub information is displayed through the TOLED panel when the LCD panel or e-paper is off.

Abstract: Disclosed herein is a display device. A first display panel displays first information. A second display panel is selectively placed in a superimposed position, in which the second display panel is superimposed on the first display panel, and in a non-superimposed position, in which the second display panel is not superimposed on the first display panel, and displays second information. A first touch panel is disposed on the first display panel. One or more second touch panels are disposed on the second display panel or disposed on the both side surfaces of the second display panel in pairs. A control unit applies driving voltage to at least one of the first and second display panels based on a signal detected from at least one of the first and second touch panels depending on any one of the superimposed position and the non-superimposed position of the first and second display panels.

Abstract: Disclosed is an organic light emitting diode, in which the light transmittance of a transparent cathode is improved, and which includes a substrate, a first electrode formed on the substrate, an organic layer formed on the first electrode, a second electrode formed on the organic layer, and a transparent layer formed at either one or both of a position between the organic layer and the second electrode and a position on the upper surface of the second electrode and including any one selected from among an oxide, a nitride, a salt and mixtures thereof, so that the formation of the transparent layer on the cathode results in increased light transmittance and decreased resistance, thereby improving electrical performance of products. A method of manufacturing the organic light emitting diode is also provided.

Abstract: Disclosed is an organic light emitting diode, which has improved light transmittance and which includes a first substrate and a second substrate, a first electrode formed on the first substrate, an organic layer formed on the first electrode, a second electrode formed between the organic layer and the second substrate, and an antireflective layer formed on at least one surface of at least one of the first substrate and the second substrate and having a predetermined refractive index, so that the formation of the antireflective layer on any outer surface of at least one of the first substrate and the second substrate results in increased transmittance, thus improving reliability of products. A method of manufacturing the organic light emitting diode is also provided.

Abstract: A luminescent spiro-dimer which has a superior heat-resistance and is capable of emitting high quality blue light, and an organic light-emitting device including the same are disclosed. The luminescent spiro-dimer has the structure of the following chemical formula, and the organic light-emitting device includes the first electrode having a high work function; the second electrode having a low work function; and at least one organic layer formed between the first electrode and the second electrode, which includes the spiro-dimer, wherein, K is a linking group, and R is H, halogen, CN, CO2R*, OR*, NR*2, SR*, alkyl, aryl, heteroaryl, heterocyclic or fused ring group, and R* is H, halogen, alkyl, alkenyl, aryl, heteroaryl, or heterocyclic group.

Abstract: A red organic light-emitting compound which has a superior heat-resistance and is capable of adjusting the color of the emitted light, and an organic light-emitting device including the same are disclosed.