Electrophoretic display and novel process for its manufacture
AssigneeSiPix Imaging, Inc.
InventorsRong-Chang Liang, Jack Hou, Yajuan Chen, Scott C-J Tseng, Jerry Chung
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Abstract
This invention relates to an electrophoretic display with improved contrast ratio, switching performance, reflectivity at the Dmin state and structural integrity, and methods for its manufacture.
Claims46
An electrophoretic display which comprises more than one layer of display cells filled with electrophoretic fluids and said filled display cells are sealed with a polymeric sealing layer which is formed from a sealing composition having a specific gravity lower than that of said electrophoretic fluids.
An electromagnetophoretic display which comprises one top layer of display cells and one bottom layer comprising display cells which are filled with an electromagnetophoretic fluid comprising a mixture of black magnetic particles and white non-magnetic particles dispersed in a colorless clear solvent or solvent.
A process for the manufacture of an electrophoretic display of more than one layer of display cells, which process comprises:
- a) preparing separately two layers of display cells, each having a conductor film side and a sealing side;
- and
- b) laminating one of the layers over the other optionally with an adhesive layer.
A process for the preparation of an electrophoretic display of more than one layer of display cells, which process comprises:
- a) forming a first layer of display cells, said first layer having a conductor film side and a sealing side;
- b) forming a second layer of display cells on a transfer release layer, said second layer having a transfer release layer side and a sealing side;
- c) laminating said second layer over said first layer and removing said transfer release layer;
- d) optionally forming separately additional layers of display cells on transfer release layers;
- each layer having a transfer release layer side and a sealing
- side;
- e) laminating each of said additional layers over a stack of layers already formed and removing the transfer release layer;
- and
- f) laminating a second conductor film over said stack.
Dependencies are inferred from the claim text.