Abstract:
PURPOSE: A drive method of a plasma display panel is provided to improve black contrast by reducing the number of discharge cells generating reset discharge with obtaining priming particles generating address discharge. CONSTITUTION: A drive control circuit(56) changes an input image signal into a pixel data of 8-bit expressing overall brightness levels as 256 gradations. A drive control circuit performs multi gradation process composed of error diffusion process and dither process on pixel data. A drive control circuit performs dither process on error diffusion process pixel data of 6-bit obtained by the error diffusion process. The drive control circuit converts multi gradation pixel data into pixel driving data of 14-bit according to data converting tables.
Abstract:
PURPOSE: A driving method of a plasma display panel is provided to improve black contrast by reducing the number of discharge cells generating reset discharge with obtaining priming particle generating address discharge. CONSTITUTION: An X-electrode driver(51) slowly raises the state of ground potential in order to apply reset pulse with waveform, which reaches on plus peak potential, on all row electrodes. An address driver(55) set up a column electrode as the state of the ground potential. The Y-electrode driver(53) raises the state of the ground potential in order to apply reset pulse with waveform, which reaches on cathode peak potential.
Abstract:
PURPOSE: A drive method of a plasma display panel is provided to suppress wrong discharge and improve contrast. CONSTITUTION: According to light emitting driving sequence, a drive control circuit(56) supplies control signals for driving a PDP(50) to a panel driver composed of an X- electrode driver and a Y-electrode driver(53), and an address driver(55). The drive control circuit supplies driver control signals, which successively performs the drive according to a first reset process, a first selection writing address process, and a micro light emitting process in a first sub field, to the panel driver. The drive control circuit supplies driver control signals, which successively performs the drive according to a second reset process, a second selection writing address process, and a sustain process in a second sub field, to the panel driver.
Abstract:
A plasma display apparatus usable as a 3D image display apparatus can reduce the crosstalk for a user who views a 3D image displayed on a plasma display panel through shutter glasses. For this purpose, the plasma display apparatus displays the 3D image on the plasma display panel having a plurality of pixels each of which is formed of a plurality of discharge cells by alternately repeating a right-eye field and a left-eye field. The plasma display apparatus adds a predetermined gradation value to an image signal to be displayed in a certain field when the number of pixels where the gradation equal to or higher than a high gradation threshold is displayed in the field immediately before a certain field and the gradation equal to or lower than a low gradation threshold is displayed in the certain field is equal to or larger than a number-of-pixels threshold.
Abstract:
In a plasma display apparatus capable of displaying an image for stereoscopic view, the image display quality is enhanced. For this purpose, the plasma display apparatus includes a driver circuit and a timing generation circuit. The driver circuit drives the plasma display panel in a manner such that a field for the right eye and a field for the left eye are alternately repeated, each field is formed of an all-cell initializing subfield and a selective initializing subfield, and the top subfield of each field is the all-cell initializing subfield. The timing generation circuit generates shutter opening/closing timing signals. The timing generation circuit generates the shutter opening/closing timing signals such that both timing signal for opening/closing the right eye shutter and timing signal for opening/closing the left eye shutter are set to OFF in the all-cell initializing period of the fields for the right eye and for the left eye.
Abstract:
A high-quality stereoscopic image is displayed by suppressing crosstalk between an image for the right eye and an image for the left eye and stabilizing an address discharge. For this purpose, in the method for driving the plasma display apparatus, an image for the right eye and an image for the left eye are alternately displayed on the plasma display panel by alternately repeating a field for the right eye and a field for the left eye. In each of the field for the right eye and the field for the left eye, the subfield having the smallest luminance weight is placed first, the subfield having the largest luminance weight is placed next, and the other subfields are placed thereafter so as to have luminance weights sequentially decreasing.
Abstract:
PROBLEM TO BE SOLVED: To provide a driving method of a plasma display panel whereby a dark contrast can be improved while preventing an erroneous discharge. SOLUTION: In a resetting step in a first unit display period, while a first reset pulse having a predetermined peak electric potential is applied to one of first row electrodes of row electrode pairs formed in the PDP, a second reset pulse having a peak electric potential smaller than that of the first reset pulse is applied to the other of the first row electrodes. In the resetting step in a second unit display period subsequent to the first unit display period, a second reset pulse is applied to each of the one and the other of the first row electrodes. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To display a stereoscopic image having high quality by suppressing crosstalk between an image for a right eye and an image for a left eye. SOLUTION: In a driving method of a plasma display device including a panel on which a plurality of discharge cells each having a scanning electrode, a sustaining electrode and a data electrode are arrayed, and a driving circuit for driving the panel, display is performed by repeating alternately a field for a right eye having a plurality of sub-fields, for displaying an image signal for the right eye, and a field for a left eye having a plurality of sub-fields, for displaying an image signal for the left eye, and each of the sub-fields has a writing period for performing writing operation, and a sustaining period for performing sustaining operation, and in a discharge cell for displaying a gradation over a threshold determined beforehand out of discharge cells onto which a phosphor in a color having the longest afterglow time is applied, writing operation is forbidden in the lastly-arranged sub-field in the field. COPYRIGHT: (C)2011,JPO&INPIT