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US 2003/0193487 A1Published application
Display device and plasma display apparatus
AssigneeFujitsu Hitachi Plasma Display Limited
InventorsNorio Yatsuda, Takashi Sasaki
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AssigneeFujitsu Hitachi Plasma Display Limited
InventorsNorio Yatsuda, Takashi Sasaki
Estimating the term…
A display device is provided in which the number of gradation levels in a display is increased without increasing the number of terminals of a driving device. A display block of one pixel in an image display screen including a plurality of cells are provided with M (two or more) cells having the same light color, and the structures of these cells are made different partially from each other, so that (M+1) types of light emission quantity control including non-light emission can be performed.
A display device comprising an image display screen made of plural cells, wherein a display block of one pixel in the image display screen is made of M (two or more) cells, and the M cells in the display block have structures different partially from each other so that at least (M+1) types of light emission quantity control including non-light emission can be performed.
A color display device comprising an image display screen made of R cells having red light color, G cells having green light color and B cells having blue light color, wherein a display block of one pixel in the image display screen is made of four or more cells including at least one each of the R cell, the G cell and the B cell and at least two cells have the same light color, and the cells having the same light color in the display block have structures different partially from each other.
A plasma display panel comprising an image display screen made of R cells having red light color, G cells having green light color and B cells having blue light color, in which display electrodes for lighting the cells and address electrodes for controlling light emission of the cells are arranged, wherein a display block of one pixel in the image display screen is made of four or more cells including at least one each of the R cell, the G cell and the B cell and at least two cells have the same light color, and the M (two or more) cells having the same light color in the display block have structures different from each other so that at least (M+1) types of light emission quantity control including non-light emission can be performed.
A plasma display panel comprising an image display screen made of R cells having red light color, G cells having green light color and B cells having blue light color, in which display electrodes for lighting the cells and address electrodes for controlling light emission of the cells are arranged, wherein a display block of one pixel in the image display screen is made of total six cells including two each of the R cells, the G cells and the B cells, and areas of total two address electrodes disposed at two cells having the same light color in the display block are different from each other.
A plasma display apparatus comprising a plurality of plasma display panels arranged in parallel, each of the plasma display panels including an image display screen made of R cells having red light color, G cells having green light color and B cells having blue light color, wherein a display block of one pixel in the image display screen is made of four or more cells including at least one each of the R cell, the G cell and the B cell and at least two cells have the same light color, and the cells having the same light color in the display block have structures that are different partially from each other.
A method for driving a plasma display panel comprising an image display screen made of R cells having red light color, G cells having green light color and B cells having blue light color, in which display electrodes for lighting the cells and address electrodes for controlling light emission of the cells are arranged, a display block of one pixel in the image display screen is made of four or more cells including at least one each of the R cell, the G cell and the B cell and at least two cells have the same light color, and the M (two or more) cells having the same light color in the display block have structures different from each other so that at least (M+1) types of light emission quantity control including non-light emission can be performed, the method comprising the steps of:
A method for driving a plasma display panel comprising an image display screen made of R cells having red light color, G cells having green light color and B cells having blue light color, in which display electrodes for lighting the cells and address electrodes for controlling light emission of the cells are arranged, a display block of one pixel in the image display screen is made of total six cells including two each of the R cells, the G cells and the B cells, and areas of total two address electrodes disposed at two cells having the same light color in the display block are different from each other, the method comprising the steps of:
A method for driving a plasma display panel comprising an image display screen made of R cells having red light color, G cells having green light color and B cells having blue light color, in which display electrodes for lighting the cells and address electrodes for controlling light emission of the cells are arranged, a display block of one pixel in the image display screen is made of total six cells including two each of the R cells, the G cells and the B cells, and areas of total two address electrodes disposed at two cells having the same light color in the display block are different from each other, the method comprising the steps of:
Dependencies are inferred from the claim text.
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Display of intermediate tones: using sub-pixels
By time modulation using two or more time intervals: using sub-frames
Using luminous gas-discharge panels, e.g. plasma panels: display of gradations
AC-PDPs with at least one main electrode being out of contact with the plasma: with main electrodes provided on both sides of the discharge space
Term end not estimated
1. Field of the Invention
The present invention relates to a color display device and a method for driving the device.
A plasma display panel (PDP) is used as a television display device having a large screen. Since the PDP is also suitable for a public display for its good viewability, a plurality of PDPs are often combined to be used as a multiscreen.
FIG. 1 is a diagram showing a general structure of a plasma display apparatus according to the present invention.
FIG. 2 is a diagram showing a cell arrangement of a display screen.
FIG. 3 is a diagram showing a cell structure of a PDP according to the present invention.
Hereinafter, the present invention will be explained more in detail with reference to embodiments and drawings.
FIG. 1 is a diagram showing a general structure of a plasma display apparatus according to the present invention. A plasma display apparatus 100 comprises a PDP 1, a housing 71 and a drive unit. The PDP 1 includes a pair of substrate structural bodies 10 and 20. The substrate structural body means a structure including a plate-like support having a size larger than a screen and at least one type of panel structuring element. The substrate structural bodies 10 and 20 are arranged so as to be opposed and overlapped to each other, and the peripheral portion of the opposed area is bonded with a sealing material 35. The housing 71 encloses the PDP 1 and the drive unit. However, the housing 71 has a window 710 having the screen size and does not hide a display screen 60 that is a part of the front portion of the PDP 1. The drive unit has drivers 55, 56 and 57 that are connected to electrodes of the PDP 1. Though the drivers 55, 56 and 57 are disposed at the peripheral portion of the PDP 1 in FIG. 1, they are actually disposed at the backside of the PDP 1. The drive unit is attached to the backside of the PDP 1, and the drive unit is attached to the housing 71 so that the PDP 1 is fixed to the housing 71.
FIG. 2 shows a cell arrangement of a display screen. The illustrated display screen 60 is a square arrangement type in which display blocks 62 each of which corresponds to one pixel of a color image are arranged in the horizontal direction and in the vertical direction. Each of the display blocks 62 is made of total six cells 64, 65, 66, 67, 68 and 69 including two each of red, green and blue colors. Italic letters R, G and B represent light colors in FIG. 2. The six cells 64-69 are arranged in the horizontal direction, and the color arrangement pattern is RRGGBB in which two neighboring cells have the same color. All display blocks 62 in the display screen 60 have the same color arrangement pattern. Namely, the color arrangement in the horizontal direction has a pattern repeating RRGGBB, and the color arrangement in the vertical direction has a pattern in which cells have the same color.