| Patent application number | Description | Published |
|---|
| 20080211776 | Keypad assembly having light leakage prevention structure - 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. | 09-04-2008 |
| 20080225507 | WAVEGUIDE MEMBER AND KEYPAD ASSEMBLY USING THE SAME - Disclosed are a waveguide member and a keypad assembly including the same. The waveguide member includes a waveguide for guiding light propagated inside, and at least one recess formed in a direction perpendicular to a direction of guidance of light coupled to the inside of the waveguide so that light guided by the waveguide is reflected to the waveguide. The keypad assembly includes a keypad having at least one key button and an elastic sheet fixing the key button, a waveguide member positioned beneath the keypad, the waveguide member having a waveguide for guiding light coupled to an inside and at least one recess for reflecting light guided by the waveguide to the waveguide, and a switch pad positioned beneath the waveguide member so as to establish an electric contact when the key button is pressed. | 09-18-2008 |
| 20080237011 | KEYPAD ASSEMBLY - 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. | 10-02-2008 |
| 20090135469 | Reflection type display apparatus and method for manufacturing light guide plate - 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. | 05-28-2009 |
| 20090154198 | REFLECTION TYPE DISPLAY APPARATUS - A reflection type display apparatus has a front light unit (FLU), and includes a display panel, a light guide disposed on the upper surface of the display panel, a light transparent adhesive layer attaching the lower surface of the light guide to the upper surface of the display panel, and a light source located at a side of the light guide for emitting light to the light guide. A protection window covers the light guide and the light source. By covering the display panel installed on the lower surface of the protection window and the light guide with a moisture-proof and light-shield film, moisture-proofing and light-shielding effects are obtained simultaneously. Further, by forming a light absorption layer at the edge of the light guide adjacent to the light source, generation of a hot spot at the edge of the light guide may be inhibited. | 06-18-2009 |
| 20100008103 | ILLUMINATION APPARATUS USING LIGHT GUIDE AND PORTABLE TERMINAL HAVING THE SAME - An illumination apparatus includes at least one light source for outputting light, a light guide for guiding light input from the at least one light source through multiple reflections in the light guide, at least one groove formed on the light guide to reflect incident light, and a light extraction pattern formed on a surface of the light guide to output the incident light to an exterior of the light guide. | 01-14-2010 |
| 20100027287 | OPTICAL FIBER ILLUMINATION DEVICE - Disclosed is an optical fiber illumination device including a light source for outputting light; a coupler for converging the light input from the light source through multiple reflection; and an optical fiber to which the converged light is input. | 02-04-2010 |
| 20100156796 | ADAPTIVE KEYPAD DEVICE FOR PORTABLE TERMINAL AND CONTROL METHOD THEREOF - Provided are an adaptive keypad device for a portable terminal and a method for controlling the adaptive keypad device. The adaptive keypad device includes a display screen being opened from or slid on a keypad by a user in at least two directions, an adaptive keypad on which letters or numbers are re-oriented and displayed in the same direction as a direction in which the display screen is opened or slid, a display element disposed on a side surface of the adaptive keypad, and a controller being connected to the display element to control a display state of the display element according to the direction of the opening or sliding of the display screen. | 06-24-2010 |
| 20100170775 | KEYPAD ASSEMBLY AND MANUFACTURING METHOD THEREOF - Disclosed is a keypad assembly and a method for manufacturing the keypad assembly in which a base film member and a button member of the keypad assembly are integrally formed. The keypad assembly includes a base film member, a button member integrally formed with the base film member, and a processed part formed by recessing a space between buttons keys of the button member in a predetermined depth to be spaced apart from the base film member, the processed part being formed on the base film member. The keypad assembly is manufactured such that the button member and the base film member to be recessed between a button key including a pattern of the button member and an adjacent button key in a predetermined depth of the base film member so as to form a processed part. Therefore, the button member can be formed through UV-molding and the press of the button member is simplified. | 07-08-2010 |
| 20100171705 | KEY PAD AND KEY PAD ASSEMBLY - 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. | 07-08-2010 |
| 20100171752 | METHOD AND APPARATUS FOR DRIVING ELECTROPHORETIC DISPLAY - An ElectroPhoretic Display (EPD) for changing a display is provided. An apparatus having the EPD applies a driving voltage with a periodic pulse to first color particles for a voltage applying period of the first color particles if a current temperature is below a predetermined temperature. The apparatus applies a driving voltage with a pulse that is kept at the same level as applied to second color particles for a voltage applying period of the second color particles. The first color particles have a higher mobility than the second color particles. | 07-08-2010 |
| 20100172017 | METHOD AND APPARATUS FOR DRIVING EPD - A method and apparatus for driving an ElectroPhoretic Display (EPD) are provided, in which upon sensing a request for displaying data in a gradual graphic representation scheme, a plurality of segments for displaying the data are determined, a display changing order of the segments is determined, an inter-segment time interval is calculated, driving voltage pulses are applied to a first segment according to the display changing order, and driving voltage pulses are applied to each of the other segments at the inter-segment time interval after driving voltage pulses are applied to a previous segment according to the display changing order. | 07-08-2010 |
| 20110074275 | DISPLAY DEVICE HAVING GAS INPUT BARRIER - Disclosed is a display device having a gas input barrier, which encapsulates a gas barrier layer through lamination and blocks the input of outside gas (moisture, water, oxygen, and the like) through further compression. The disclosed display device includes first and second gas barrier layers provided with an adhesive layer; a first gas input barrier provided at a lateral side of the first and second gas barrier layers to encapsulate the first and second gas barrier layers through lamination, and to block input of outside gas; and a second gas input barrier which is further compressed on the first gas input barrier by using a compression jig, and blocks an input path of the outside gas into the first gas input barrier. | 03-31-2011 |
| 20110157136 | METHOD AND APPARATUS FOR DRIVING ELECTROPHORETIC DISPLAY - A method and apparatus for driving an Electrophoretic Display (EPD) where the apparatus includes a controller for controlling an overall operation of the apparatus for driving the EPD, determining data to be displayed on the EPD, and outputting a drive signal; a driver for generating a driving voltage pulse for moving black particles and white particles to display the data on the EPD according to the drive signal output from the controller, thereby controlling the EPD; and the EPD for displaying a representation of the data in white or black according to the driving voltage pulse, wherein the driver generates the driving voltage pulse for moving the black particles or the white particles in such a manner that the driving pulse is divided into a predetermined number of subpulses, and an idle period during which a voltage is not applied intervenes between the respective divided subpulses. | 06-30-2011 |
