US 2016/0366379 A1 · SEAMLESS TILED DISPLAYS

Abstract

A tile and tiled display system having at least two adjacent tiles each having a display screen with display pixels which are picture elements, whereby for coloured displays each pixel is comprised of a plurality light emitting or light modulating elements. Each of the tiles has at least one first substrate of a first material and at least one first layer of a second material fixed to the first substrate where the thickness of the at least one first layer is less than the thickness of the first substrate; the coefficient of thermal expansion of the first substrate is less than the coefficient of thermal expansion of the at least one first layer and the distance between the at least two tiles is less than the size of a pixel on the display screen. The first substrates of adjacent tiles can be brought in mechanical contact.

Claims22

Dependent claims

1-62. (canceled)

A direct view or rear projection tiled display arrangement having tiles, each tile having a display screen and pixel locations, comprising:

at least two adjacent tiles, each of the two adjacent tiles having at least one first substrate of a first material and at least one first layer of a second material fixed to the first substrate characterized in that the thickness of the at least one first layer is less than the thickness of the first substrate;
the coefficient of thermal expansion of the first substrate is less than the coefficient of thermal expansion of the at least one first layer,
wherein the at least one first substrate is fixed to a support frame, the geometry and dimensions of each tile being selected to reduce changes in alignment of the at least two adjacent tiles in the tiled display such that the distance between the at least two tiles is kept to less than 0.5 mm on the display screen, the at least one substrate having chamfers on lateral sides thereof forming first sloping glue surfaces, and the support frame having second sloping glue surfaces matching the first sloping glue surfaces and the first and second sloping glue surfaces are fixed together with a bounded temperature activated adhesive such as a temperature activated adhesive tape or are glued together with glue dispensed on a thin carrier foil and the first and second sloping glue surfaces being such that the bounded temperature activated adhesive or glue is resistant to long term creep and shear, and wherein the support frame of each tile is fastened to a support structure by mechanical fastening means.

A method of making a tiled display arrangement having at least two adjacent tiles for a rear projection or direct view display system, each tile being associated with a display screen with pixel locations, each of the two adjacent tiles having at least one first substrate of a first material, the method comprising:

fixing at least one first layer of a second material to the first substrate characterized in that the thickness of the at least one first layer is less than the thickness of the first substrate;
the coefficient of thermal expansion of the first substrate is less than the coefficient of thermal expansion of the at least one first layer and the geometry and dimensions of each tile are such that the distance between the at least two tiles is less than 0.5 mm on the display screen, fixing the at least one first substrate to a support frame, the at least one substrate having chamfers on lateral sides thereof forming first sloping glue surfaces, and the support having second sloping glue surfaces matching the first sloping glue surfaces and the first and second sloping glue surfaces are fixed together with a bounded temperature activated adhesive such as a temperature activated adhesive tape or are glued together with glue dispensed on a thin carrier foil such that the shear and creep within the adhesive tape or the glue is reduced.

A tile for a tiled display arrangement for a rear projection or direct view display system, the tile having a display screen with pixel locations, comprising:

at least one first substrate of a first material having characteristics of rigidity and strength and at least one first layer of a second material fixed to the first substrate characterized in that the thickness of the at least one first layer is less than the thickness of the first substrate;
the coefficient of thermal expansion of the first substrate is less than the coefficient of thermal expansion of the at least one first layer, wherein the at least one first substrate is fixed to a support frame, the at least one substrate having chamfers on lateral sides thereof forming first sloping glue surfaces, and the support having second sloping glue surfaces matching the first sloping glue surfaces and the first and second sloping glue surfaces are fixed together with a bounded temperature activated adhesive such as a temperature activated adhesive tape or are glued together with glue dispensed on a thin carrier foil such that the shear and creep within the adhesive tape or the glue is reduced.

Dependencies are inferred from the claim text.

Seamless tiled displays

Life of this patent

Seamless tiled displays

Life of this patent

Abstract

Claims22