Joled Inc.

Matsushita Electronics Corporation

Matsushita Electric Industrial Co., Ltd.

Panasonic Corporation

Yoshiki Hayashida

Takayuki Shimamura

Kazuhiro Kobayashi

Toshiaki Onimaru

Hiroshi Sakurai

Tetsuro Ozawa

Tetsuro Kondoh

Makoto Kimura

Yoshiharu Yamamoto

Shinya Tsuchida

Jun Hashimoto

Kenichi Ikeda

Shinji Sasaki

Akinori Shiota

Hiroyuki Masuda

Masaki Kawasaki

Yoshikazu Iwai

Katsuyuki Yamashita

A method for repairing a bank during manufacture of an organic EL display device when a bank defect portion is produced due to collapsing of a bank, a foreign particle, or the like. The method includes: detecting a defect portion of a lengthwise bank formed over a ground substrate; and when a defect portion is detected, forming, in each of adjacent concave spaces between which the lengthwise bank having the defect portion is located, a dam partitioning the concave space into a first space in a vicinity of the bank defect portion and a second portion not in the vicinity of the bank defect portion. The shape of the dam is configured so that in ejecting organic functional layer ink in each concave space with a nozzle head, there is an ink dropping point in each of the first space and the second space.

Method for manufacturing organic EL display device and organic EL display device

A display panel including: a substrate; a multi-layer wiring layer disposed over the substrate and including a first power line and a second power line; organic electroluminescence elements over the multi-layer wiring layer; a partition wall over the multi-layer wiring layer; and a member over the multi-layer wiring layer, a height of the member from the substrate being greater than a height of the partition wall from the substrate, wherein the multi-layer wiring layer includes a first portion and a second portion, the organic electroluminescence elements are arrayed on the first portion, in the second portion, the first power line and the second power line intersect, and the member is positioned on the second portion without overlapping at least one of the first power line and the second power line in plan view of the substrate.

Display panel including multilayer wiring and member for reducing probability of power line mis-pressing during manufacturing process, and manufacturing method for the same

A bank repair method for repairing a defect portion of a bank in a process of manufacturing an organic electroluminescence (EL) display device including a substrate, banks formed over the substrate, and light-emitting layers formed in concave spaces defined by the banks. The bank repair method includes: examining whether or not a bank having a defect portion is present; and when a bank having a defect portion is present, repairing the bank by applying a repair material containing a gas adsorbent to the defect portion and curing the repair material; and after curing the repair material, baking the repair material by irradiating the repair material with infrared laser light.

Method for repairing bank, organic EL display device, and method for manufacturing same

An examination is performed of whether or not a bank having a defect portion is present. When a bank having a defect portion is present, the bank having the defect portion is repaired by forming a dam in each of adjacent concave spaces between which the bank having the defect portion is located. A dam formed in a concave space partitions the concave space into a first space in a vicinity of the defect portion and a second space outside the vicinity of the defect portion. The dam, at a portion thereof with lowest height, satisfies (h/H)+0.1W&#x2267;1.5, 0.5&#x2266;(h/H)&#x2266;2.0, and 5&#x2266;W&#x2266;50, where a ratio of the height h of the dam to a height H of the banks is denoted as h/H, and a width of the dam is denoted as W &#x3bc;m.

Bank repair for organic EL display device

An examination is performed of whether or not a bank having a defect portion is present. When a bank having a defect portion is present, the bank having the defect portion is repaired by forming a dam in each of adjacent concave spaces between which the bank having the defect portion is located. A dam formed in a concave space partitioning the concave space into a first space in a vicinity of the defect portion and a second space outside the vicinity of the defect portion.

Bank repair method, organic EL display device, and production method for same

An organic electroluminescence (EL) element that has an anode; a cathode; an organic light-emitting layer between the anode and the cathode that emits light according to recombination of holes injected from the anode and electrons injected from the cathode; and an electron transport layer between the cathode and the organic light-emitting layer that transports electrons from the cathode to the organic light-emitting layer. The electron transport layer includes an n-type dopant that includes an electron-donating substance, the electron transport layer being doped with the n-type dopant at a doping concentration that is higher than a doping concentration at which light emittance efficiency of the organic light-emitting layer is greatest.

Organic EL element and organic EL display panel

A defect detection method for an organic EL element having a first electrode, a second electrode, and a functional layer and a light-emission layer disposed between the electrodes, including: applying a first voltage, between the electrodes, that, when the organic EL element includes, between the electrodes, a defective portion that is a potential cause of non-light emission of the light-emission layer, reduces electrical resistance of a first portion, of the functional layer, corresponding to the defective portion and makes the organic EL element detectable as a dark spot, whose light-emission layer does not emit light; and after applying the first voltage, applying a second voltage between the electrodes and detecting whether or not the organic EL element is the dark spot, the second voltage, when the organic EL element does not include the defective portion, causing the light-emission layer to emit light.

Defect detection method, method for repairing organic EL element, and organic EL display panel

An antireflection structure that can be formed in a desired shape, and a method for manufacturing the same are provided. An antireflection structureincludes a resin layerformed in a desired shape, and inorganic material fine particlesdispersed inside the resin layer. A plurality of fine concaveshaving an average inner diameter shorter than or equal to the minimum wavelength of light whose reflection should be suppressed are formed at the surface of the antireflection structure, thereby reducing the equivalent refractive index at the surface of the resin layer. The fine concavesare formed by, after forming a composite material in which the nanosized inorganic material fine particlesare dispersed in the resin layer, dissolving the inorganic material fine particlesdispersed at the surface of the resin layer, using a solvent that dissolves only the inorganic material fine particles

Antireflection structure, lens barrel including antireflection structure, method for manufacturing antireflection structure

A method for producing an oxide cathode including a sleeve containing a heater coil, a cathode substrate provided on one end of the sleeve, and an emissive material layer formed by thermally decomposing an alkaline earth metal carbonate layer adhered onto the cathode substrate, which method includes adhering the alkaline earth metal carbonate onto the cathode substrate so that it has a bulk density of 0.5 to 0.8 g/cm , then pressing it so that the bulk density becomes not more than 0.9 g/cm , and then thermally decomposing it in vacuum. Accordingly, an oxide cathode in which the current density distribution of emission electrons is smooth and an electron emission characteristic is not deteriorated when operated for a long time is realized, and a method for producing a cathode-ray tube with high resolution in which moire is invisible is provided.

Method for producing oxide cathode

An emitter material for a CRT comprises mixed crystal or solid solution of at least two kinds of alkaline earth metal carbonate, wherein at least one alkaline earth metal carbonate is dispersed or separated in the mixed crystal or solid solution. The alkaline earth metal carbonate, which is an emitter material for the CRT, is coated onto the base metal and thermally decomposed in a vacuum to from an emitter of an alkaline earth metal. This emitter, which is proper for a larger screen size, high brightness and high resolution CRT, can be provided with enough life characteristics even under the operating condition of the emission current density of 2A/cm,.

Emitter material for cathode ray tube having at least one alkaline earth metal carbonate dispersed or concentrated in a mixed crystal or solid solution

An emitter material for a CRT comprises mixed crystal or solid solution of at least two kinds of alkaline earth metal carbonate, wherein at least one alkaline earth metal carbonate is dispersed or separated in the mixed crystal or solid solution. The alkaline earth metal carbonate, which is an emitter material for the CRT, is coated onto the base metal and thermally decomposed in a vacuum to from an emitter of an alkaline earth metal. This emitter, which is proper for a larger screen size, high brightness and high resolution CRT, can be provided with enough life characteristics even under the operating condition of the emission current density of 2A/cm.sup.2.

Method for manufacturing emitter for cathode ray tube

Cathode for electron tube

A cathode for an electron tube is described that has little deterioration of emission current after long operation, is used as a long-life oxide cathode even with high current density in a CRT, and is economical. An emissive material is adhered onto a substrate that is positioned at one opening of a cylindrical sleeve having a built-in heater coil and that includes nickel as a main component by thermally decomposing carbonate including an alkaline earth metal oxide and at least one element selected from the group consisting of titanium, nickel, zirconium, vanadium, niobium and tantalum.

Growing community of inventors

Osaka, Japan

Yoshiki Hayashida