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US 7,548,221 B2Granted
Plasma display panel and driving method thereof
AssigneeSamsung SDI Co., Ltd.
InventorsTae-Seong Kim, Woo-Joon Chung, Jin-Sung Kim, Seung-Hun Chae, Kyoung-Ho Kang
Life of this patent
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Abstract
A plasma display panel (PDP) and a method for driving the PDP. An ON/OFF pattern of an externally-inputted image signal is checked to sense a sustained discharge occurring in discharge cells respectively corresponding to scan electrodes included in a particular one of multiple scan electrode groups over a predetermined time. A control operation is carried out in response to the sensing of the sustained discharge to allow a discharge to occur in discharge cells respectively corresponding to scan electrodes included in the scan electrode groups other than the particular scan electrode group.
Claims15
A plasma display panel device comprising:
- a plasma display panel having a plurality of address electrodes, a plurality of scan electrodes divided into a first scan electrode group and a second scan electrode group, and a plurality of sustain electrodes;
- a controller for correcting an externally-inputted image signal and outputting a corrected image signal;
- an address driver for generating address data signals corresponding to an address driving control signal outputted from the controller and applying the address data signals to the address electrodes;
- a first scan driver for generating scan pulse voltages corresponding to sustain discharge signals outputted from the controller as a scan driving signal and applying the scan pulse voltages to the scan electrodes included in one of the first scan electrode group and the second scan electrode group;
- a second scan driver for generating scan pulse voltages corresponding to the sustain discharge signals outputted from the controller as the scan driving signal, and applying the scan pulse voltages to the scan electrodes included in the other of the first scan electrode group and the second scan electrode group;
- and
- a sustain driver for generating sustain pulse voltages corresponding to the sustain discharge signals outputted from the controller and applying the sustain pulse voltages to the sustain electrodes,
- wherein each of the first scan driver and the second scan driver applies the scan pulse voltages generated respectively therefrom to the scan electrodes included in an associated one of the first scan electrode group and second scan electrode group in response to a control signal from the controller, and
- wherein the controller senses a sustained discharge occurring in discharge cells corresponding to the scan electrodes in one of the first scan electrode group and the second scan electrode group over a predetermined time, and, in response to such sensing of the sustained discharge, outputs the scan driving signal such that a discharge occurs in discharge cells corresponding to the scan electrodes in the other of the first scan electrode group and the second scan electrode group.
6 more elements
A plasma display panel device comprising:
- a plasma display panel including a first scan electrode group having a plurality of first scan electrodes, and a second scan electrode group having a plurality of second scan electrodes;
- a first scan driver for generating scan pulse voltages corresponding to sustain discharge signals outputted from a controller, and applying the scan pulse voltages from the first scan driver to scan electrodes included in one of the first scan electrode group and the second scan electrode group;
- a second scan driver for generating scan pulse voltages corresponding to the sustain discharge signals outputted from the controller, and applying the scan pulse voltages from the second scan driver to scan electrodes included in the other of the first scan electrode group and the second scan electrode group;
- a switching unit for coupling the first scan driver and the second scan driver to the first scan electrode group and the second scan electrode group;
- and
- a controller for controlling coupling between the switching unit and the first scan driver and the second scan driver,
- wherein the switching unit couples the first scan driver and the second scan driver to the first scan electrode group and the second scan electrode group such that one of the first scan driver and the second scan driver applies the scan pulse voltages outputted from the one of the first scan driver and the second scan driver to the scan electrodes included in one of the first scan electrode group and the second scan electrode group, and the other of the first scan driver and the second scan driver applies the scan pulse voltages outputted from the other of the first scan driver and the second scan driver to the scan electrodes included in the other of the first scan electrode group and the second scan electrode group in response to a control signal from the controller, and
- wherein the controller senses a sustained discharge occurring in discharge cells corresponding to the scan electrodes in one of the first scan electrode group and the second scan electrode group over a predetermined time, and, in response to the sensing of the sustained discharge, switches a coupling between the first scan driver and the second scan driver and the first scan electrode group and the second scan electrode group such that a discharge occurs in discharge cells corresponding to the scan electrodes in the other of the first scan electrode group and second scan electrode group.
5 more elements
A method to drive a plasma display panel including a first scan electrode group having a plurality of scan electrodes, a second scan electrode group having a plurality of scan electrodes, a first scan driver for applying scan pulse voltages to the scan electrodes included in one of the first scan electrode group and the second scan electrode group, and a second scan driver for applying scan pulse voltages to the scan electrodes included in the other of the first scan electrode group and the second scan electrode group, comprising:
- outputting by the first scan driver and the second scan driver the scan pulse voltages to the first scan electrode group and the second scan electrode group respectively;
- and
- outputting by the first scan driver and the second scan driver in response to a control signal additional scan pulse voltages to the first scan electrode group and the second scan electrode group respectively,
- wherein the control signal is a signal used for sensing generation of a sustained discharge at discharge cells corresponding to the scan electrodes included in one of the first scan electrode group and the second scan electrode group over a predetermined time in accordance with checking of an ON/OFF pattern of an externally-inputted image signal, and, in response to such sensing of the sustained discharge, controlling a discharge to occur in discharge cells corresponding to the scan electrodes in the other of the first scan electrode group and the second scan electrode group.
1 more element
A scan driver apparatus for a plasma display panel including a first scan electrode group having a plurality of scan electrodes, a second scan electrode group having a plurality of scan electrodes comprising:
- a first scan driver for applying scan pulse voltages to scan electrodes included in one of the first scan electrode group and the second scan electrode group;
- and
- a second scan driver for applying scan pulse voltages to scan electrodes included in the other of the first scan electrode group and the second scan electrode group,
- wherein the first scan driver and the second scan driver output respective scan pulse voltages to the first scan electrode group and the second scan electrode group, and
- wherein the first scan driver and the second scan driver output in response to a control signal additional scan pulse voltages to the first scan electrode group and the second scan electrode group respectively, and
- wherein the control signal is a signal used for sensing generation of a sustained discharge at discharge cells corresponding to the scan electrodes in one of the first scan electrode group and the second scan electrode group over a predetermined time in accordance with checking of an ON/OFF pattern of an externally-inputted image signal, and, in response to such sensing of the generation of the sustained discharge, controlling a discharge to occur in discharge cells corresponding to the scan electrodes in the other of the first scan electrode group and the second scan electrode group.
3 more elements
Dependencies are inferred from the claim text.