Abstract: A display device includes: a luminance converter which converts input gradation value into a corresponding target luminance value; a luminance correction calculator which calculates output gradation value from the target luminance value and calculates a corrected luminance value from the output gradation value, using an efficiency residual ratio which is an index representing the light-emitting element deterioration degree; a current stress calculator which converts current stress amount on the light-emitting element calculated from the corrected luminance value into current stress amount when reference current flows through the light-emitting element, and calculates the accumulated current stress amount; a temperature stress calculator which converts temperature stress amount on the light-emitting element under environmental temperature into temperature stress amount on the light-emitting element under reference temperature, and calculates the accumulated current stress amount; and an efficiency residual rat

Abstract: A display device includes: a luminance converter which converts input gradation value into a corresponding target luminance value; a luminance correction calculator which calculates output gradation value from the target luminance value using efficiency residual ratio representing a deterioration degree of a light-emitting element, and calculates a corrected luminance value therefrom; a current stress calculator which converts current stress amount on a light-emitting element calculated from the corrected luminance value into current stress amount when first reference current flows through the light-emitting element, and accumulates this to calculate an accumulated first stress amount; a CB stress calculator which converts CB stress amount on the light-emitting element into current stress amount when second reference current flows through the light-emitting element, and accumulates this to calculate an accumulated second stress amount; and an efficiency residual ratio calculator which updates the efficiency r

Abstract: A display device includes: a luminance converter which converts input gradation value into a corresponding target luminance value; a luminance correction calculator which calculates output gradation value from the target luminance value using efficiency residual ratio representing a deterioration degree of a light-emitting element, and calculates a corrected luminance value therefrom; a current stress calculator which converts current stress amount on a light-emitting element calculated from the corrected luminance value into current stress amount when first reference current flows through the light-emitting element, and accumulates this to calculate an accumulated first stress amount; a CB stress calculator which converts CB stress amount on the light-emitting element into current stress amount when second reference current flows through the light-emitting element, and accumulates this to calculate an accumulated second stress amount; and an efficiency residual ratio calculator which updates the efficiency r

Abstract: A display device includes: a luminance converter which converts input gradation value into a corresponding target luminance value; a luminance correction calculator which calculates output gradation value from the target luminance value and calculates a corrected luminance value from the output gradation value, using an efficiency residual ratio which is an index representing the light-emitting element deterioration degree; a current stress calculator which converts current stress amount on the light-emitting element calculated from the corrected luminance value into current stress amount when reference current flows through the light-emitting element, and calculates the accumulated current stress amount; a temperature stress calculator which converts temperature stress amount on the light-emitting element under environmental temperature into temperature stress amount on the light-emitting element under reference temperature, and calculates the accumulated current stress amount; and an efficiency residual rat

Abstract: A display device correction method performed by a control unit that performs display control on an organic electroluminescent (EL) panel including a plurality of display pixels, in an organic EL display which includes the organic EL panel and the control unit. The display device correction method includes: obtaining a cumulative value of a pixel signal supplied to a drive transistor which is included in a current pixel to be processed among the plurality of display pixels and supplies drive current according to the pixel signal to an organic EL element (OEL); calculating a shift amount of a threshold voltage of the drive transistor, using the cumulative value; calculating an amount of change in mobility, using the shift amount; and calculating a correction parameter for correcting a pixel signal, using the amount of change in mobility.

Abstract: A method for forming an electrode for a lithium ion battery is disclosed. The method includes preparing a mixture slurry, coating the mixture slurry onto a current collector body, and heating the mixture slurry coating to form an active substance layer. The slurry mixture can be prepared by mixing a polyimide precursor solution and active substance particles. The polyimide resin in the active substance layer is porous due to the method.

Abstract: A display device correction method performed by a control unit that performs display control on an organic electroluminescent (EL) panel including a plurality of display pixels, in an organic EL display which includes the organic EL panel and the control unit. The display device correction method includes: obtaining a cumulative value of a pixel signal supplied to a drive transistor which is included in a current pixel to be processed among the plurality of display pixels and supplies drive current according to the pixel signal to an organic EL element (OEL); calculating a shift amount of a threshold voltage of the drive transistor, using the cumulative value; calculating an amount of change in mobility, using the shift amount; and calculating a correction parameter for correcting a pixel signal, using the amount of change in mobility.

Abstract: The invention addresses the problem of providing a polyimide precursor, a polyimide precursor solution, and a mixture slurry, each capable of more firmly binding active material particles to a current collecting body. The polyimide precursor solution according to the invention contains a tetracarboxylic acid ester compound, a diamine compound having an anionic group, and a solvent. The solvent dissolves the tetracarboxylic acid ester compound and the diamine compound. As the tetracarboxylic acid ester compound, a 3,3?,4,4?-benzophenonetetracarboxylic acid diester is particularly preferred. Examples of the “diamine compound having an anionic group” include 3,4-diaminobenzoic acid, 3,5-diaminobenzoic acid, and m-phenylenediamine-4-sulfonic acid. Further, the mixture slurry according to the invention contains active material particles in the polyimide precursor solution.

Abstract: A plasma display device includes an image signal processing circuit having a sequential addressing processing circuit, an alternate addressing processing circuit and an image data selection circuit. The sequential addressing processing circuit includes a sequential addressing array unit for converting an image signal into image data arranged in the order corresponding to a sequential address operation. The alternate addressing processing circuit includes an alternate addressing array unit for converting an image signal into image data arranged in the order corresponding to an alternate address operation. The image data selecting circuit selecting between the sequential and alternate addressing operations based on predicted power consumption.

Abstract: In display of an image on a plasma display panel, the contrast of the display image is enhanced. For this purpose, the voltage obtained by subtracting the voltage applied to the data electrode from the low-side voltage of the sustain pulses applied to the scan electrode in the sustain period is defined as a first voltage. The voltage obtained by subtracting the voltage applied to the data electrode from the high-side voltage of the sustain pulses applied to the scan electrode is defined as a second voltage. The voltage obtained by subtracting the low-side voltage of the address pulse applied to the data electrode from the low-side voltage of the scan pulse applied to the scan electrode in the address period is defined as a third voltage.

Abstract: A frame correlation determination part is for determining a level of correlation of decoded image signals between frames. A flat region detection part is for detecting an image region in which a difference in brightness between neighboring pixels is small as a flat region from the decoded image signals. A high-frequency region detection part is for detecting an image region including a high spatial frequency component as a high-frequency region from the decoded image signal. A smoothing processing part is for performing smoothing processing to the decoded image signal corresponding to a predetermined region. A processing region setting part is for setting an image region in which the smoothing processing part is to perform smoothing processing to the decoded image signal are included. The processing region setting part sets at least a region in frames in which a correlation between frames is low and which is a flat region and not a high frequency region in the decoded image signals, as a processing region.

Abstract: A loading phenomenon in a plasma display panel is reduced.

Abstract: A plasma display device includes the following elements: an image signal conversion circuit for converting an image signal into an image data; a data electrode driver circuit for driving data electrodes according to the image data; a power calculation circuit for calculating a power consumption of the data electrode driver circuit according to the image data; and a temperature calculation circuit for calculating a temperature of the data electrode driver circuit according to the image data. The image signal conversion circuit converts the image signal into an image data decreasing the power consumption of the data electrode driver circuit at least when the calculated power consumption exceeds a predetermined power threshold value, or when the calculated temperature exceeds a predetermined temperature threshold value.

Abstract: A plasma display device includes an image signal processing circuit having a sequential addressing processing circuit and an alternate addressing processing circuit. The sequential addressing processing circuit includes a sequential addressing array unit for converting an image signal into image data arranged in the order corresponding to a sequential address operation, a first data power conversion unit for converting the image data converted from the received image signal into image data which allows to have low electric power consumption, and a first addressing stop unit for stopping an address operation in specific subfields. The alternate addressing processing circuit includes an alternate addressing array unit for converting an image signal into image data arranged in the order corresponding to an alternate address operation, a second data power conversion unit, and a second addressing stop unit. The number of the specific subfields is the same between the first and second data power conversion units.

Abstract: An image display device includes an error diffusion circuit for limiting the gradation level of an image signal to that displayable on the image display device, and diffusing error data produced by the limitation to neighboring pixels. The error diffusion circuit includes an error replacement unit for replacing the error data with fixed-value data in a predetermined period of the image signal.

Abstract: A frame-cyclic noise reduction device of an image display device, in which one field is divided into a plurality of sub-fields, and turned-on sub-fields are properly combined to provide an image with gradation. The noise reduction device detects an area where an edge portion of an image becomes unclear, i.e., where sub-field fuzziness becomes worse, and controls a cyclic amount for the area in which sub-field fuzziness becomes worse so as to be different from that for another area, thereby decreasing noise.

Abstract: A plasma display device includes the following elements: an image signal conversion circuit for converting an image signal into an image data; a data electrode driver circuit for driving data electrodes according to the image data; a power calculation circuit for calculating a power consumption of the data electrode driver circuit according to the image data; and a temperature calculation circuit for calculating a temperature of the data electrode driver circuit according to the image data. The image signal conversion circuit converts the image signal into an image data decreasing the power consumption of the data electrode driver circuit at least when the calculated power consumption exceeds a predetermined power threshold value, or when the calculated temperature exceeds a predetermined temperature threshold value.

Abstract: A frame correlation determination part is for determining a level of correlation of decoded image signals between frames. A flat region detection part is for detecting an image region in which a difference in brightness between neighboring pixels is small as a flat region from the decoded image signals. A high-frequency region detection part is for detecting an image region including a high spatial frequency component as a high-frequency region from the decoded image signal. A smoothing processing part is for performing smoothing processing to the decoded image signal corresponding to a predetermined region. A processing region setting part is for setting an image region in which the smoothing processing part is to perform smoothing processing to the decoded image signal are included. The processing region setting part sets at least a region in frames in which a correlation between frames is low and which is a flat region and not a high frequency region in the decoded image signals, as a processing region.

Abstract: Disclosed here is a frame-cyclic noise reduction employed for an image display device in which one field is divided into a plurality of sub-fields, and turned-on sub-fields are properly combined to provide image with gradation. The device detects an area where an edge portion of image becomes unclear, i.e., where sub-field fuzziness becomes worse, and controls a cyclic amount for the area in which sub-field fuzziness becomes worse so as to be different from that for other area, thereby decreasing noise.

Abstract: A halftone display method utilizes an activation sequence, having a plurality of luminance blocks predefined in each frame or field to display an image and having redundancy, that enables one gray-scale level to be expressed by any one of a plurality of combinations of subframes (luminance blocks). When determining luminance blocks for use to display gray scale of an arbitrary first pixel, the luminance blocks to be used for the first pixel are selected in accordance with a predetermined rule, based on how the luminance blocks are used for a second pixel located in close proximity to the first pixel. In this way, by actively utilizing the redundancy of the activation sequence, the occurrence of moving-image false contours (false color contours) in video can be minimized, and also a motion compensation equalizing pulse method can be effectively applied to further improve the image display quality.