Abstract:
An electronic device includes a substrate and a structure overlying the substrate and defining an array of openings arranged in a set of vectors. At first locations between openings along a first vector of the set of vectors, first heights at the first locations are substantially equal to one another. The electronic device also includes an organic layer in the geometric shape of a line that at least partially lies within the openings along the first vector and overlies the structure at the locations between the openings along the first vector.
Abstract:
A method for fabricating viewing screen (100) includes the steps of: adding to a black surround paste a ductile metal paste, adding to the black surround paste lead titanate particles, depositing the black surround paste on glass substrate (110), and heating the black surround paste and glass substrate (110) to affix the black surround paste to glass substrate (110), thereby forming black matrix (111). The ductile metal paste and lead titanate particles are added in amounts sufficient to realize an extent of cracking in black matrix (111) upon repeated heating to a temperature within a range of 450-600° C. that is significantly less than that exhibited by an unimproved black matrix, which is made only from the material of the black surround paste.
Abstract:
A phosphor includes about 99 dry weight % cathodoluminescent particles, which have a mean particle diameter equal to about 4 microns, and about 1 dry weight % non-cathodoluminescent inorganic particles, which have a mean particle diameter equal to about 20 microns. A method for fabricating phosphor includes the steps of providing an aqueous polyvinyl alcohol solution having about 7.5 weight % polyvinyl alcohol, adding cathodoluminescent particles to the aqueous polyvinyl alcohol solution to provide a cathodoluminescent particle solution having about 16.5 volume % cathodoluminescent particles, and adding non-cathodoluminescent inorganic particles to the cathodoluminescent particle solution to provide a phosphor paste. Non-cathodoluminescent inorganic particles function as dispersants and suspension-stabilizing agents in the phosphor paste.
Abstract:
A field emission display (200) includes a cathode plate (202); a substrate (102) opposing the cathode plate (202); a conductive matrix (104) disposed on the substrate (102) and having via walls (103) defining a plurality of phosphor vias (105); a phosphor (106, 108, 110) disposed within each of the phosphor vias (105); and a gas-adsorption material distributed within the conductive matrix (104). A method for fabricating the field emission display (200) includes the steps of silk-screening onto the substrate (102) a screenable suspension, which is made from a glass, a metal, a gas-adsorption material, and a photo-sensitive material, to form a film; photo-patterning the film to form a phosphor via (105); depositing a phosphor material into the phosphor via (105) to form an anode plate (100); and affixing the cathode plate (202) to the anode plate (100).
Abstract:
Disclosed is process of forming a regular array of rows of subpixels on a workpiece. The subpixels having four different colors, and a subpixel pitch s. Of the four colors, q colors are formed by printing and r colors are formed by a non-printing method. The process includes the steps: (1) providing a printing head having z nozzles arranged in a row with a spacing between the nozzles of p, where z=4n1 and p=3s, the printing head being at a first position relative to the workpiece; (2) providing q different printing inks, one for each of the q printed colors; (3) supplying each of the printing inks to the nozzles in a regular alternating pattern; (4) printing a first set of z rows of subpixels with the printing head; (5) moving and printing in a first printing pattern by: (a) moving the workpiece laterally relative to the printing head by a distance d1, where d1=4n2s; (b) printing a set of z rows of subpixels with the printing head; (6) moving and printing in a second printing pattern by: (c) moving the workpiece laterally relative to the printing head by a distance d2, where d2=d1; (d) printing a set of z rows of subpixels with the printing head; (7) moving and printing in a third printing pattern by: (e) moving the workpiece laterally relative to the printing head by a distance d3, where d3=4n3s, such that d1+d2+d3=pz; and (f) printing a set of z rows of subpixels with the printing head; (8) repeating steps (5) through (7) multiple times in the same order; and (9) applying r colors by a non-printing method.
Abstract:
An electronic device includes an array. In one embodiment, a process for forming an electronic device includes the array, which includes electronic components, can include printing one or more layers as a series of segments onto a workpiece. In one embodiment, a process includes printing a layer onto the workpiece and at least one exposed portion of the chuck. In still another embodiment, a printing head is greater than 0.5 mm from the workpiece. In a further embodiment, “hybrid” printing can be used to help form a thicker layer having a relatively thinner width. In a further embodiment, processes can be used to reduce the likelihood of a stitching defect, nonuniformity of a layer across an array, or a combination thereof. A printing apparatus can be modified to achieve more flexibility in liquid compositions, temperatures or other conditions used in printing a layer.
Abstract:
An electronic device includes a printed layer. In one embodiment, a process for forming the electronic device includes placing a workpiece over a chuck within a printing apparatus. A temperature difference is established between the workpiece and a liquid composition. The process further includes continuously printing the liquid composition over the workpiece. A viscosity of the liquid composition is allowed to increase at a rate significantly higher than an ambient viscosity increase rate. In another embodiment, the workpiece is allowed to cool to a temperature significantly below an ambient temperature before printing occurs. In still another embodiment, a printing apparatus is used for continuously printing the liquid composition over the workpiece. The printing apparatus includes the chuck, a printing head, a container, a feed line, and a first temperature-adjusting element thermally coupled to the chuck, the printing head, the container the feed line, or a combination thereof.
Abstract:
There is provided a backplane for an organic electronic device. The backplane has a TFT substrate having a multiplicity of electrode structures thereon; and a bank structure defining pixel areas over the electrode structures. The bank structure is removed from and not in contact with the electrode structures by a distance of at least 0.1 microns.
Abstract:
The invention provides methods for the production of full-color, subpixellated organic electroluminescent (EL) devices. Substrates used in the methods of the invention for production of EL devices comprise wells wherein the walls of the wells do not require surface treatment prior to deposition of electroluminescent material. Also provided are EL devices produced by the methods described herein.
Abstract:
An electronic device includes a printed layer. In one embodiment, a process for forming the electronic device includes placing a workpiece over a chuck within a printing apparatus. A temperature difference is established between the workpiece and a liquid composition. The process further includes continuously printing the liquid composition over the workpiece. A viscosity of the liquid composition is allowed to increase at a rate significantly higher than an ambient viscosity increase rate. In another embodiment, the workpiece is allowed to cool to a temperature significantly below an ambient temperature before printing occurs. In still another embodiment, a printing apparatus is used for continuously printing the liquid composition over the workpiece. The printing apparatus includes the chuck, a printing head, a container, a feed line, and a first temperature-adjusting element thermally coupled to the chuck, the printing head, the container the feed line, or a combination thereof.