Abstract:
There is provided a backplane for an organic electronic device. The backplane has a TFT substrate having a multiplicity of electrode structures thereon. There are spaces around the electrode structures and a layer of organic filler in the spaces. The thickness of the layer of organic filler is the same as the thickness of the electrode structures.
Abstract:
There is provided a method of printing a regular array of rows of subpixels on a workpiece. The subpbcels have c different colors and have a subpixel pitch s. A printing head has z nozzles arranged in a row with a spacing p, where z =n 1 (c) and p =n 2 (s), the printhead being at a first 10 position relative to the workpiece. There are c different printing inks, one for each of the c colors, and each of the printing inks is supplied to the nozzles in a regular alternating pattern. The method includes steps of printing a first set of z rows of subpixels with the printing head; moving the workpiece laterally relative to the printing head by a distance d 1 , where d 1 15 =n 3 (s); printing a second set of z rows of subpixels with the printing head; repeating the printing steps.
Abstract:
There is provided a backplane for an organic electronic device. The backplane has a TFT substrate having a multiplicity of electrode structures thereon; a bank structure defining pixel areas over the electrode structures; and a thin layer of insulative inorganic material between the electrode structures and the bank 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:
Compositions are described comprising small molecule active material, polymer, and aprotic solvent, and methods for making the same, as well as devices and sub-assemblies including the same.
Abstract:
Organic electronic devices may include an organic electronic component having an organic layer including guest material(s). One or more liquid compositions may be placed over a substantially solid organic layer. Each liquid composition can include guest material(s) and liquid medium (media). The liquid medium (media) may interact with the organic layer to form a solution, dispersion, emulsion, or suspension. The viscosity of the resulting solution, dispersion, emulsion, or suspension can be higher than the liquid composition to keep lateral migration of the guest material to a relatively low level. Still, most, if not all, the guest material(s) can migrate into the organic layer to locally change the electronic or electro-radiative characteristics of a region within the organic layer, with less than one order of magnitude difference in guest material concentration throughout the thickness of the organic layer. The process can be used for organic active layers, filter layers, and combinations thereof.
Abstract:
There is provided a 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 printhead 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; where: n1 is an integer greater than 0; n2 is an integer greater than 0, such that the integer is not a multiple of three and n2 = n1; n3 is an integer such that 2n2 + n3 = 3n1; q is an integer from 1-4; and r is an integer, such that q + r = 4.
Abstract:
There is provided a process of forming a regular array of rows of subpixels on a workpiece. The subpixels having 3 different colors, and a subpixel pitch s. Of the three 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 = 3n 1 and p = 2s, the printhead 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 pattern with the steps: (a) moving the workpiece laterally relative to the printing head by a distance d 1 , where d 1 = 3n 2 ; and (b) printing a set of z rows of subpixels with the printing head; (6) moving and printing in a second pattern with the steps: (c) moving the workpiece laterally relative to the printing head by a distance d 2 , where d 2 = 3n 3 , such that d 1 + d 2 = pz; and (d) printing a set of z rows of subpixels with the printing head; (7) repeating steps (5) and (6) multiple times in the same order; and (8) applying r colors by a non-printing method. Variables include: n 1 , an integer greater than 0; n 2 and n 3 , odd integers, such that n 2 + n 3 = 2n 1 q, an integer from 1 -3; and r, an integer, such that q + r = 3.
Abstract:
An apparatus and method for liquid-phase dispensing of layers onto a substrate of an electronic device. An absorbent material reduces or eliminates splatter of printing material on the substrate during continuous printing operations. The absorbent material can be regenerated by exposure of new surface area or vacuum drawing of printing material through the absorbent material.
Abstract:
There is provided a process for forming an organic electronic device wherein a TFT substrate having a non-planar surface has deposited over that substrate a planarization layer such that a substantially planar substrate, or planarized substrate, is formed. A multiplicity of thin first electrode structures having a first thickness and having tapered edges with a taper angle of no greater than 75° are formed over the planarized substrate. A multiplicity of active layers is formed over the planarized substrate. Then a buffer layer is formed by liquid deposition of a composition comprising a buffer material in a first liquid medium. The buffer layer has a second thickness which is at least 20% greater than the first thickness. A chemical containment pattern defining pixel openings is then formed over the buffer layer. A composition comprising a first active material in a second liquid medium is deposited into at least a portion of the pixel openings. Then a second electrode is formed.
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.