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US 7,116,059 B2Granted
Display device and display panel device
AssigneeFujitsu Hitachi Plasma Display Limited
InventorsNobuyuki Hori, Yoshimi Kawanami, Atsuo Ohsawa, Fumihiro Namiki
Life of this patent
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Abstract
A functional sheet is brought into intimate contact with a front surface of a plasma display panel, and the functional sheet has a structure in which heat diffusion is superior to heat insulation between the plasma display panel and outside air. In addition, a display device includes a controller for controlling a drive voltage pulse train so that power consumption in a unit area in a light emission region within the screen is limited under a set value when one image is displayed.
Claims13
A display device, comprising:
- a plasma display panel having a screen including a plurality of cells;
- a functional sheet having at least an optical filter function to light emitted from the screen, being brought into intimate contact with a front surface of the plasma display panel and having a structure in which heat diffusion is superior to heat insulation between the plasma display panel and outside air;
- a drive voltage output circuit for giving the screen a drive voltage pulse train that generates display discharge plural times corresponding to a gradation;
- and
- a controller for controlling the drive voltage pulse train so that power consumption in a unit area in a light emission region within the screen is limited under a set value when one image is displayed.
2 more elements
A display panel device, comprising:
- a plasma display panel having a screen including a plurality of cells;
- a functional sheet having at least an optical filter function to light emitted from the screen, and being brought into intimate contact with a front surface of the plasma display panel;
- and
- a driving circuit board arranged at the rear side of the plasma display panel, wherein
- the driving circuit board includes a drive voltage output circuit for giving the screen a drive voltage pulse train that generates display discharge plural times corresponding to a gradation, and a controller for controlling the drive voltage pulse train so that power consumption in a unit area in a light emission region within the screen is limited under a set value when one image is displayed.
2 more elements
Dependencies are inferred from the claim text.