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US 2009/0153942 A1Published application
Particle display with jet-printed color filters and surface coatings
AssigneePalo Alto Research Center Incorporated
InventorsJurgen H. Daniel, Steven E. Ready
Life of this patent
Estimating the term…
Abstract
An improved method of forming a display is described. The method includes the operation of forming a cell in an array of cells. Walls of the cell are used to confine both a color filter and a display material prior to sealing the cell. The method is particularly useful when jet printing particulate display materials and filter materials to form pixels in a display.
Claims23
A display comprising:
- a bottom substrate;
- at least one cell defined by walls in an array of cells of the display, at least one cell formed over the bottom substrate;
- a display material occupying a first portion of the cell, the display material to control the amount of light passing through part of the cell;
- a color filter material deposited in a second portion of the cell, the second portion spatially separated from the first portion, the color filter material to control the color of light passing through a part of the cell.
1 more element
A method of forming a display comprising the operations of:
- forming a cell, the cell including a substrate and a cell wall surrounding a cell;
- filling a first portion of the cell with a display material;
- sealing the display material with a sealing polymer in the first portion of the cell;
- filling a second portion of the cell with a color filter material such that the combination of the display material, the sealing material and the filter material approximately fill the cell.
1 more element
A method of forming a display comprising:
- forming cell walls around a cell cavity;
- sealing a color filter in a bottom portion of the cell cavity;
- depositing a display material in a top portion of the cell cavity;
- and,
- sealing the display material.
2 more elements
A display comprising:
- a first surface coating that partially coats no more than 95% of the height of each cell sidewall of at least one cell in an array of cells of the display;
- and;
- a second surface coating that differs from the first surface coating, the second surface coating coats the bottom surface of the at least one cell in the array of cells, the first surface coating and the second surface coating to differ in particle adhesion properties of electrophoretic particles.
Dependencies are inferred from the claim text.