Abstract: Methods and systems for writing and erasing electric writeable media are disclosed. An electric writeable medium may include a backplane electrode, a display layer including a plurality of elements and a top layer. The medium may further include a plurality of island electrodes. To enable writing to the medium, a stylus is charged to a positive voltage and the backplane electrode is grounded. The stylus is applied to the top layer and/or the island electrodes to deposit charge, which causes proximate elements to display a first color. If the top layer is a resistive layer, grounding the resistive layer and applying a positive voltage to the backplane electrode sufficient to change the displayed color of the elements erases the medium. If the top layer is a photoconductive layer, a light source is further required to enable the photoconductive layer to operate as an electrode when erasing the medium.

Abstract: A display device including a data driver for supplying data currents corresponding to image signals, and a demultiplexer including first and second sample/hold circuit groups having input terminals coupled to the data driver. Each said sample/hold circuit group includes at least two sample/hold circuits. The display device also includes a switch unit for switching between output terminals of the first and second sample/hold circuit groups and data lines, and a scan driver for supplying select signals to scan lines. One of the sample/hold circuits of the first sample/hold circuit group samples a corresponding one of the data currents during at least a part of a period in which another one of the sample/hold circuits of the first sample/hold circuit group outputs a current to the switch unit. Orders in which the data currents are supplied from the data driver are varied.

Abstract: A display panel of a light emitting display device includes a plurality of pixel circuits disposed in a matrix format. At least one of the pixel circuits includes a light emitting element, a transistor, a capacitor, a first switch, and a second switch. The transistor has first, second, and third electrodes and is for outputting a current corresponding to a voltage applied between the first and second electrodes to the third electrode. The light emitting element is for emitting light corresponding to the current outputted by the transistor. The capacitor is coupled between the first and second electrodes of the transistor. The first switch is for transmitting image signals to the first electrode of the transistor in response to a select signal, and the second switch is for electrically coupling the light emitting element to the third electrode of the transistor in response to an emit signal.

Abstract: A liquid crystal display (LCD) includes a plurality of pixels, a source driver and a gate driver, each pixel comprising a transistor, a storage capacitor, a pixel electrode, a common electrode coupled to a common voltage, and liquid crystal molecules located between the pixel electrode and the common electrode, the transistor conducting a grey-scale signal generated by the gate driver to the pixel electrode based on a scan voltage generated by the gate driver, the LCD being characterized in that a substrate electrode of the transistor is coupled to a first voltage, and the storage capacitor is coupled to a substrate voltage and the transistor. The common voltage is positive proportional to the substrate voltage.

Abstract: An apparatus for driving a discharge display panel using dual subfield coding, which can prevent a gradient low discharge effect due to an address discharge failure by performing a subfield gradient weight design, by which a subfield gradient has a plurality of redundancies in all gradients except gradients having the lowest gradient weight and the highest gradient weight, and a dynamic dual subfield coding. The apparatus divides an image signal into frame units, obtains an input gradient of a frame from the image signal, performs a time division gradient display on the discharge display panel according to the input gradient by dividing the frame into a plurality of subfields having respective gradient weights, and has at least two subfields having a least gradient weight.

Abstract: A display device, comprising: a pixel array unit having display elements formed in vicinity of intersections of signal lines and scanning lines arranged in length and breadth, image pickup units and an output unit which outputs binary data corresponding to image picked up by said image pickup unit; a image pickup device provided separate from said image pickup unit; a first image processing unit configured to generate multiple gradation data based on multiple binary data picked up by said image pickup units based on multiple image pickup conditions; and a second image processing unit configured to receive either the image pickup data picked up by said image pickup device or the multiple gradation data generated by said first image processing unit, to conduct a prescribed image processing.

Abstract: The present invention provides a technology for using an STB in conjunction with various display panels that comprise different types of display devices. The present invention comprises a display panel (2), which includes a memory section (255) and a transmitter section (210). The memory section (255) stores identification information (ID information), which includes the information about the type of a device constituting the display panel (2) and/or the specifications for the display panel. The transmitter section (210) transmits the ID information stored in the memory section (255) to a signal processing apparatus (1).

Abstract: A touch panel has an adhesive layer for mounting it on an apparatus only within a range corresponding to its visible area, excluding outer frame. By pressing, from above, only the range within the visible area where an adhesive layer is provided, it is mounted on a liquid crystal display, and thereby, formation of air bubbles and the like within the portion corresponding to the visible area can be reduced and a high quality electronic apparatus can be easily realized.

Abstract: In driving a Plasma Display Panel (PDP), when a driving operation moves from an address period to a sustain period, low-voltage driving switches of all of the scan ICs are turned on at the same time after the drain voltage and source voltage of each of them are made equal via a power recovery circuit under the condition that the outputs of the scan ICs are floating. Therefore, when the switches are turned on, no current flows therethrough, thereby making it possible to solve instability of a driving circuit and noise and EMI therein.

Abstract: In a display device, input display data processed by an input processing circuit is stored in a frame memory as first video data. Next-inputted video data is stored in another frame memory as second video data. The stored first video data is read out as video signals of a first field in response to a double-speed clock signal and is supplied to respective drain drivers. A comparison circuit compares second video data and first video data in the frame memory for each pixel. An output data processing circuit is controlled based on the comparison result. When second video data is darker than first video data, black display data is supplied to respective drain drivers as display data of the second field, while when second video data is brighter than first video data, white display data is supplied to respective drain drivers as display data of the second field.

Abstract: A display device in which the influence of a parasitic capacitance or a wiring capacitance is suppressed without lowering OFF-current of a switching transistor or increasing the capacitance of a capacitor, and a driving method thereof using area gray scale display in particular. The display device of the invention comprises a plurality of sub pixels each including a driving transistor whose gate potential is fixed, and area gray scale display is achieved. Specifically, each of the sub pixels comprises, in addition to the driving transistor, a switching transistor, a current controlling transistor connected in series with the driving transistor, and a light emitting element.

Abstract: An apparatus and method for processing a gray scale in a display device is provided. In the gray scale processing method, a video data is randomly error-diffused by using random coefficients, and the error-diffused video data is dithered by using average picture level (APL) masks, thereby enhancing a gray scale expression and minimizing an error diffusion noise.

Abstract: An apparatus for driving a display panel can execute quality image display. To allow discharge cells operating as pixels of the display panel to repeatedly perform sustain discharge, a fall period of a last sustain pulse of sustain pulses repeatedly applied to row electrodes includes a first voltage drop period in which a voltage value gently drops, a voltage constant period which follows the first voltage drop period and in which the voltage value remains constant for a predetermined period, and a second voltage drop period which follows the voltage constant period and in which the voltage value drops more gently than in the first voltage drop period.

Abstract: A computer mouse is provided which includes an elastic cover detachably secured upon a main body of the mouse, to enhance ease of operation and reduce muscle strain and soreness by repeatedly operating the computer mouse. The main body has left and right click knobs and optionally a scrolling wheel pivotally mounted thereon. The cover and main body can be complementary coupled together through respective mating convex and concave portions. A display surface is explicitly provided on the main body and/or cover to allow for labeling of instructional information and/or advertising. Additionally, the computer mouse, notably the detachably mounted cover member, can be provided in an attractive shape to encourage use by a child.

Abstract: A display device is provided with a shift register having a plurality of bistable circuits, each of the bistable circuits being connected to a corresponding scanning line. An RS flip-flop circuit provided in each of the bistable circuits functions as a memory portion for discriminating a start position of a display region for partial display. When partial display is carried out, first, only the RS flip-flop circuit corresponding to the start position of the display region is put into the set state, that is, only the bistable circuit corresponding to the start position of the display region is put into the set state. Moreover, the scanning lines that are connected to the bistable circuits from the start position to the end position are driven sequentially. During this, only the bistable circuit corresponding to the start position is kept in the set state, and the other bistable circuits are kept in the reset state.