Appearance improvement for zone backlit LCD displays
AssigneeTTE Indianapolis
InventorsMark F. Rumreich, Brent W. Hoffman
Life of this patent
Estimating the term…
Abstract
A liquid crystal display device includes a display panel having an active image display region, a non-image display region surrounding the active image display region, and a border area disposed between the active image display region and the non-image display region, and a backlight device adjacent to the display panel and having a plurality of light producing elements corresponding to the active image display region, wherein the border area is disposed between the active image display region and the non-image display region to diffuse light produced by the light producing elements transmitted through the display panel within the border area.
Claims20
A liquid crystal display device, comprising:
- a display panel having an active image display region, a non-image display region surrounding the active image display region, and a border area disposed between the active image display region and the non-image display region;
- and
- a backlight device adjacent to the display panel and having a plurality of light producing elements corresponding to the active image display region,
- wherein the border area is disposed between the active image display region and the non-image display region to diffuse light produced by the light producing elements transmitted through the display panel within the border area.
A liquid crystal display device, comprising:
- a display panel having an active image display region and a non-image display region surrounding the active image display region;
- and
- a backlight device adjacent to the display panel and having a plurality of light producing elements corresponding to the active image display region,
- wherein the plurality of light producing elements include a first group of light producing elements producing light and disposed within a central area of the active image display region operating at a first power input level, and a second group of light producing elements producing light and disposed along a perimeter of the active image display region and operating at a second power input level lower than the first power input level.
A method of reducing power consumption of a liquid crystal display device, comprising:
- providing a first plurality of light producing elements of a backlight device disposed adjacent to a display panel of the liquid crystal display device, each of the first plurality of light producing elements receiving a first input power level and producing a first amount of light, the first plurality of light producing elements disposed adjacent to a central area of an active image display region of the display panel;
- and
- providing a second plurality of light producing elements of the backlight device disposed adjacent to the display panel of the liquid crystal display device, each of the second plurality of light producing elements receiving a second input power level less than the first input power level and producing a second amount of light, the second plurality of light producing elements disposed adjacent to a perimeter area of the active image display region of the display panel.
Dependencies are inferred from the claim text.