Method and device for driving plasma display panel
First Claim
1. A method for driving a plasma display panel by replacing a frame with a plurality of subframes having weights of luminance and by setting on and off of light emission of cells for each subframe so as to realize a gradation display, the method comprising the steps of:
- assigning a luminance weight to the subframes so that plural types of subframe expressions as combinations of subframes to be lighted are prepared for a specific gradation; and
applying a superposition method in which the plural types of subframe expressions are mixed only to the specific area of the frame that is made of pixels having the specific gradation and has a luminance gradient within a preset value range between the neighboring pixels.
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Accused Products
Abstract
A method for driving a plasma display panel is provided in which dynamic pseudo contours are reduced and pattern noises are suppressed so that image quality of an animation display is improved. In the method, a superposition method is applied only to the area of a display image, which is made of pixels having a gradation at which only one of plural subframes having the same luminance weight concerning the superposition method is lighted and has a luminance gradient within a preset value range between the neighboring pixels.
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Citations
8 Claims
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1. A method for driving a plasma display panel by replacing a frame with a plurality of subframes having weights of luminance and by setting on and off of light emission of cells for each subframe so as to realize a gradation display, the method comprising the steps of:
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assigning a luminance weight to the subframes so that plural types of subframe expressions as combinations of subframes to be lighted are prepared for a specific gradation; and
applying a superposition method in which the plural types of subframe expressions are mixed only to the specific area of the frame that is made of pixels having the specific gradation and has a luminance gradient within a preset value range between the neighboring pixels. - View Dependent Claims (2)
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3. A method for driving a plasma display panel by replacing a frame with a plurality of subframes having weights of luminance and by setting on and off of light emission of cells for each subframe so as to realize a gradation display, the method comprising the steps of:
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assigning a luminance weight to the subframes so that plural types of subframe expressions as combinations of subframes to be lighted are prepared for a specific gradation; and
applying a superposition method in which the plural types of subframe expressions are mixed only to the specific area of the frame that is made of pixels having the specific gradation and has a luminance gradient within a preset value range between the neighboring pixels and is a portion of a moving object different from the previous frame. - View Dependent Claims (4)
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5. A device for driving a plasma display panel by replacing a frame with a plurality of subframes and by setting on and off of light emission of cells for each subframe so as to realize a gradation display, wherein
the device comprises an area decision circuit for dividing the frame into a specific area that is made of pixels having a specific gradation and has a luminance gradient within a preset value range between the neighboring pixels and other areas, and the device performs a light emission control for the specific area of the frame by applying a superposition method in which plural types of subframe expressions are mixed while performs another light emission control for the other areas without applying the superposition method.
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6. A device for driving a plasma display panel by replacing a frame with a plurality of subframes and by setting on and off of light emission of cells for each subframe so as to realize a gradation display, wherein
the device comprises an area decision circuit for dividing the frame into a specific area that is made of pixels having a specific gradation and has a luminance gradient within a preset value range between the neighboring pixels and is a portion of a moving object different from the previous frame and other areas, and the device performs a light emission control for the specific area of the frame by applying a superposition method in which plural types of subframe expressions are mixed while performs another light emission control for the other areas without applying the superposition method.
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7. A display device comprising:
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an AC type plasma display panel; and
a driving device for driving the plasma display panel, wherein the driving device includes an area decision circuit for dividing the frame into a specific area that is made of pixels having a specific gradation and has a luminance gradient within a preset value range between the neighboring pixels and other areas, and the driving device performs a light emission control for the specific area of the frame by applying a superposition method in which plural types of subframe expressions are mixed while performs another light emission control for the other areas without applying the superposition method.
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8. A display device comprising:
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an AC type plasma display panel; and
a driving device for driving the plasma display panel, wherein the driving device includes an area decision circuit for dividing the frame into a specific area that is made of pixels having a specific gradation and has a luminance gradient within a preset value range between the neighboring pixels and is a portion of a moving object different from the previous frame and other areas, and the driving device performs a light emission control for the specific area of the frame by applying a superposition method in which plural types of subframe expressions are mixed while performs another light emission control for the other areas without applying the superposition method.
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Specification