US 2006/0077544 A1Published application

Visual display screen arrangement

AssigneeSeamless Display Limited

InventorBernard Stark

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Abstract

A visual display screen (100) has a display area (30), for displaying an image, and which extends as far as an optically inactive region (33) towards the edge of the display screen (100). A cover arrangement (400) overlays the display screen (100) and comprises a generally planar portion and an edge portion, comprising a light-bending region. The light-bending region is arranged to bend rays of light near the edge of the display screen (100) by means of refraction, reflection or diffraction such that the display area (30), as viewed externally of the arrangement, appears to extend substantially as far as the edge of the cover arrangement (400). The light-bending region further provides graded magnification, adapted to minimize the rate of change of local magnification across the cover arrangement (400). This function may be optimised for viewing across junctions between adjacent display screens (100, 100′).

Claims31

Dependent claims

A visual display screen arrangement for displaying an image, comprising:

image display means having a display area;
and
a translucent cover member arranged to cover the display area and having a first cover member edge, the display area having an edge extending towards but not as far as the said first cover member edge, the cover member providing a local magnification defined as the ratio of the apparent magnitude of an area A of the display area, as viewed through the cover member at a particular angle of incidence, to the actual magnitude of that area A within the display area;
the cover member having:
(a) a generally planar portion covering at least a part of the display area and being arranged to transmit parallel rays of light emanating from different locations across the display area such that they are bent by substantially the same angle when viewed externally of the arrangement and wherein the local magnification is substantially unity;
and
(b) an edge portion which includes the first cover member edge, the said edge portion having a light bending region arranged to bend rays of light emanating from different locations at or adjacent to the edge of the display area such that the said display area, as viewed externally of the arrangement and through the edge portion, appears to extend substantially as far as the edge of the cover member,
characterised in that the light bending region of the edge portion provides a local magnification which varies with distance from the cover member edge, and wherein the light bending region has a graded magnification adapted to minimize the rate of change of local magnification between the generally planar portion of the cover member and the first cover member edge.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application: 10/531,538Filed 14 Oct 2003
Priority: GB 0223883.015 Oct 2002
Published: 13 Apr 2006
Term ends: Not estimatedThe source records don’t support an estimate.

Classification8 codes

G06F 1/1615
For portable computers: with several enclosures having relative motions, each enclosure supporting at least one I/O or computing function
G02F 1/13336
Constructional arrangements; Manufacturing methods: combining plural substrates to produce large-area displays, e.g. tiled displays
G02F 1/133526
Structural association of cells with optical devices, e.g. polarisers or reflectors: lenses, e.g. microlenses or Fresnel lenses
G06F 1/1601
Constructional details or arrangements: constructional details related to the housing of computer displays, e.g. of CRT monitors, of flat displays

Family

No related US applications are recorded in the indexed filing history.

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