Abstract: A white phosphor, a light emission unit including the white phosphor, and a display device including the light emission unit are provided. The white phosphor comprises a green phosphor including a Tb-doped oxide host material, a blue phosphor and a red phosphor. The green phosphor doped with Tb is used as an activator, and has a wavelength which does not overlap with a wavelength of the blue phosphor, thereby improving color purity of the light emission device.

Abstract: Provided are a method for using a flexible bandwidth in an orthogonal frequency division multiple access (OFDMA)-based cognitive radio system, and a base station (BS) and a subscriber station using the method. The method includes: allocating a channel band from among unused channel bands having a bandwidth that is a natural number times a bandwidth resolution to customer premises equipment (CPE), wherein the bandwidth resolution is a predetermined bandwidth smaller than a bandwidth of a broadcast channel band, and transmitting an OFDMA-based signal comprising band allocation information indicating information regarding the allocated channel band.

Abstract: A plasma display panel including common and scanning electrodes arranged on a first substrate. A first dielectric layer covers the common electrodes and the scanning electrodes, and it includes groove shaped field concentration units. The width of end parts of a field concentration unit is greater than the width of the central part of the field concentration unit.

Abstract: A light emission device in which a light emission unit has an improved structure and a display device using the light emission device as a light source. The light emission device includes first and second substrates facing each other with a predetermined distance therebetween, an electron emission unit located on one side of the first substrate, and a light emission unit located on one side of the second substrate. The electron emission unit includes a plurality of electron emission elements. The light emission unit includes at least one phosphor layer and a reflection layer spaced apart from the phosphor layer with a barrier disposed between the phosphor layer and the reflection layer.

Abstract: A method and apparatus for generating an elemental image by an integral image technique are provided. The method includes normalizing coordinates of dots in a frustum formed in perspective projection by mapping the dots in the frustum into a cube; reversing a grade of depth of the cube viewed from a particular viewpoint; and generating a two-dimensional (2D) elemental image necessary for three-dimensional (3D) display from dots in the cube whose grade of depth is reversed.

Abstract: A bonding method of a flexible film is provided, which includes: positioning an anisotropic conductive film on a plurality of first signal lines formed on the flexible film to be bonded to a thin film transistor (TFT) panel; arranging the anisotropic conductive film on the TFT panel to align the first signal lines formed on the flexible film and a plurality of second signal lines formed on the TFT panel; positioning at least one portion of a protection film for protecting the second signal lines of the flexible film to be overlapped with the TFT panel; and pressing the flexible film and the TFT panel.

Abstract: Disclosed is an apparatus and method for erasure detection and soft-decision decoding in a cellular system receiver. In the present invention, a complex channel gain and a noise variance of a received symbol from a cellular system transmitter are estimated, and an erasure symbol (a symbol with high power interference) is detected by comparing a threshold value according to the estimated complex channel gain or noise variance with power of the received symbol. Log-likelihood ratios corresponding to constituent bits of the detected erasure symbols are allowed to be 0, and the log-likelihood ratios of the constituent bits of the other received symbols are calculated. A soft-decision decoding operation of received bits is performed with the calculated log-likelihood ratios.

Abstract: A plasma display panel is provided having a front and rear substrates. Barrier ribs extend between the front and rear substrates to form discharge cells. First and second electrodes are on the front substrate and extend in a first direction and face each other in respective discharge cells to form a discharge gap. A dielectric layer covers the first and second electrodes. A phosphor layer is formed in each of the discharge cells. The barrier ribs have first barrier rib portions that extend in the first direction and second barrier rib portions that extend in a second direction crossing the first direction. The first electrodes extend over the first barrier rib portions and pairs of the second electrodes extend along each side of the first electrodes and protrude into the respective discharge cells to the discharge gap.

Abstract: A driving circuit for a liquid crystal display, the driving circuit being an integrated circuit having electrode pads disposed on a surface of the integrated circuit, bumps formed on the electrode pads, a conductive adhesive layer formed on the bumps and conductive particles having an outer conductive layer and an elastic polymer inner portion deposited on the conductive adhesive layer. The driving circuit is mounted on a TFT array substrate and bonded to pads provided on the substrate. The conductive particles reduce electrical connection resistance that would otherwise arise due to height differences between bumps in a plurality of bumps, and prevents electrical open defects and an electrical short defects.

Abstract: An LDPC code encoding apparatus includes: a code matrix generator for generating and transmitting a parity-check matrix comprising a combination of square matrices having a unique value on each row and column thereof; an encoding means encoding block LDPC codes according to the parity-check matrix received from the code matrix generator; and a codeword selector for puncturing the encoded result of the encoding means to generate an LDPC codeword. The code matrix generator divides an information word to be encoded into block matrices having a predetermined length to generate a vector information word. The encoding means encodes the block LDPC codes using the parity-check matrix divided into the block matrices and a Tanner graph divided into smaller graphs in correspondence to the parity-check matrix.

Abstract: Disclosed is a transmitting and receiving method for reducing a time-varying channel distortion in an orthogonal frequency division multiplex (OFDM) system. In the present invention, the transmitter defines M sub-channels in one data group, mathematically analyzes a change of channel for each path causing a time-varying channel distortion in a high-speed mobile environment by approximation, calculates a weight value based on the mathematical analysis and assigns the calculated weight value to transmit data of each sub-channel. Subsequently, the receiver combines the signals of these M sub-channels and demodulates the combined signals. Accordingly, the present invention greatly reduces a distortion caused by the time-varying channel to improve a bit error rate and a channel estimation performance.

Abstract: Provided is a plasma display panel (PDP) including: a first substrate and a second substrate facing each other; barrier ribs that are arranged between the first and second substrates and that partition a plurality of discharge cells; sustain electrode pairs that are spaced apart from each other on the first substrate, each sustain electrode pair including an X electrode and a Y electrode; and a first dielectric layer that covers the sustain electrode pairs and includes grooves such that at least two grooves correspond to each of the discharge cells and exhaust passages that linearly connect the grooves of neighboring discharge cells, wherein a distance between the X electrodes and the Y electrodes is larger than a height of the barrier ribs.

Abstract: Disclosed is a receiver digital filter for a digital IF signal processor suitable for the specification of each communication standard in a communication system that supports at least one communication standard. The filter for each standard is constructed as one block, and includes a block for externally implementing the constructed block. The coefficient of the digital filter constructed in one block is implemented with an external input or an internal filter coefficient calculator by a basic filter building block. In this manner, the common resources required in the digital filter used in each communication standard are shared, and only the additionally required resources are selectively implemented. Since the shared resources are calculated by dynamic programming, a considerably smaller number of additional resources are required.

Abstract: A plasma display panel (PDP) capable of providing excellent luminous efficiency and generating a stable address discharge is provided. The plasma display panel includes a first substrate, a second substrate, a barrier rib, sustain electrode pairs, a first dielectric layer, address electrodes, phosphor layers, and a discharge gas. The second substrate faces the first substrate. The barrier rib is arranged between the first substrate and the second substrate and defines a plurality of discharge cells, sustain electrode pairs arranged on the first substrate, each of the sustain electrode pairs comprising a common electrode and a scan electrode. The first dielectric layer covers the sustain electrode pairs and comprises, in each discharge cell, at least one first groove formed in a portion of the first dielectric layer corresponding to the common electrode and at least one second groove formed in a portion of the first dielectric layer corresponding to the scan electrode.

Abstract: Provided is a plasma display panel which is capable of achieving high-efficiency. The plasma display panel includes: a front substrate; a rear substrate opposite to the front substrate; a plurality of barrier ribs defining a plurality of discharge cells in a space between the front substrate and the rear substrate; a plurality of sustain electrodes extended along the front substrate and arranged in pairs, wherein each sustain electrode pair consists of a pair of an X electrode and a Y electrode that are opposite to each other and generate a discharge; a plurality of address electrodes extended along the rear substrate, and intersecting the sustain electrodes at parts corresponding to the discharge cells; and a light-emitting material formed in the discharge cells and emitting red, green and blue visible light, wherein a ratio of an electrode gap with respect to a cell pitch is between 0.2 and 0.

Abstract: A plasma display panel includes front and rear substrates parallel to one another, a plurality of discharge electrode pairs on the front substrate, a plurality of discharge cells between the front and rear substrates, a front dielectric layer having a plurality of grooves on the discharge electrode pairs, and a protective layer on the front dielectric layer, the protective layer having first protective layer portions on a first front dielectric layer portion of the front dielectric layer, second protective layer portions on a second front dielectric layer portion of the front dielectric layer, and third protective layer portions, wherein at least one thickness of the first protective layer portions and the third protective layer portions is larger than a thickness of the second protective layer portions.

Abstract: Provided is a plasma display panel including a first substrate and a second substrate facing each other, barrier ribs disposed between the first and second substrates and defining a plurality of discharge cells, a pair of sustain electrodes spaced apart from each other on the first substrate facing the second substrate, and each comprising an X electrode and an Y electrode, phosphor substances emitting red, green, and blue light, each color of light formed in the plurality of discharge cells, and a first dielectric layer covering the pair of sustain electrodes and comprising at least two corresponding grooves at each discharge cell, wherein an interval between the X electrode and the Y electrode is larger than the height of the barrier ribs, and an interval between the grooves in the discharge cell comprising the phosphor substance emitting light of one color is different from an interval between the grooves in another discharge cell comprising the phosphor substance emitting light of another color.

Abstract: A design for a plasma display panel that results in improved visible ray transmissivity. The plasma display panel includes a substrate, a plurality of discharge electrode pairs arranged on the substrate and spaced apart from each other, a dielectric layer covering the plurality of discharge electrode pairs, the dielectric layer including a plurality of grooves are arranged thereon and a protective layer including a first protective layer arranged on side surfaces of the plurality of grooves, a second protective layer arranged on portions of the dielectric layer outside the grooves, and a third protective layer arranged on bottom surfaces of the plurality of grooves, a thickness of the first protective layer being less than a thickness of each of the second and the third protective layers.

Abstract: A Plasma Display Panel (PDP) includes: a first substrate and a second substrate facing each other; a barrier rib structure located between the first and second substrates to define a plurality of discharge cells; pairs of sustain electrodes arranged on the first substrate so as to face the second substrate and so that the sustain electrodes in each pair are spaced apart from one another, each pair of sustain electrodes including an X electrode and a Y electrode, a distance between the X and Y electrodes being greater than a height of the barrier rib structures; a plurality of auxiliary electrodes protruding from the respective sustain electrodes in each pair of sustain electrodes toward the other sustain electrode of the pair of sustain electrodes; and a first dielectric layer covering the pairs of the sustain electrodes and the auxiliary electrodes, the first dielectric layer including at least two grooves formed in each of the discharge cells, the two grooves corresponding to the X and Y electrodes.

Abstract: A Plasma Display Panel (PDP) with improved luminous efficiency includes: a rear substrate; a front substrate facing the rear substrate; a plurality of barrier ribs interposed between the front and rear substrates and partitioning a plurality of discharge cells; a plurality of sustain electrode pairs arranged separate from each other on the front substrate facing the rear substrate, each pair of sustain electrodes including an X electrode and an Y electrode; and a front dielectric layer covering the sustain electrode pairs and having at least two grooves in each of the discharge cells; a distance between the X and Y electrodes of each sustain electrode pair is greater than a height of the barrier ribs.