Panasonic Corporation

Tetsuro Kondoh

Seiji Nishiyama

Takahiro Komatsu

Takayuki Takeuchi

Ryuuta Yamada

Shinya Ono

Kenichi Nendai

Kei Sakanoue

Kou Sugano

A display panel includes: a substrate on which a plurality of feed terminals corresponding to a plurality of pixels are provided; a plurality of pixel electrodes corresponding to the respective pixels; a common electrode common to the pixels; and a plurality of light-emitting layers corresponding to the respective pixels and provided between the pixel electrodes and the common electrode. In plan view, within each of the pixels, the light-emitting layer and the feed terminal do not overlap, feed terminals of each column of pixels are provided in a column, and the common electrode is electrically connected to conductive layers, the conductive layers each having a shape of a line that overlaps a corresponding one of the columns of feed terminals. Accordingly, the display panel achieves a high aperture ratio even with the conductive layers formed therein.

Display panel and display device

A method for manufacturing a light-emitting element. An anode is formed on a main surface of a substrate. A hole-injection layer is formed at least above the anode. At least the hole-injection layer is covered with a protective film. A bank which is provided with an aperture through which a portion of the protective film is exposed, is formed on the protective film by a wet process. The portion of the protective film exposed through the aperture is removed so that a portion of the hole-injection layer is exposed, a light-emitting layer is formed on the hole-injection layer exposed through the aperture, and a cathode is formed above the light-emitting layer. The protective film is resistant to a fluid used during the wet process.

Method for manufacturing a light-emitting element including a protective film for a charge injection layer

A resin material layer including photosensitive resin material is formed on an interlayer on an underlayer. By partially exposing and developing the resin material layer using developer in which the resin material layer and the interlayer are soluble, an uncured portion of the resin material layer is removed to form an opening penetrating to the interlayer, and the developer infiltrates into the interlayer via the opening to remove at least surfaces of first and second portions of the interlayer. The first portion corresponds to the opening. The second portion surrounds the first portion. Each bank is formed by heating a remaining portion of the resin material layer to soften an overhanging portion above a space formed by the surface of the second portion being removed, so that the overhanging portion flows downward to fill the space, cover an exposed portion of the interlayer, and contact the underlayer or the interlayer.

Method for manufacturing light-emitter, organic display panel using light-emitter, organic light-emitting device and organic display device

A device and method improving luminous efficiency and luminescent color in an organic EL display panel used in electronic devices such as televisions or the like by making it easy to adjust the difference in film thickness between layers of different luminescent colors, such as intermediate layers, when the intermediate layers and light-emitting layers are formed by a wet method. By varying by color the volume of a contact hole formed in an interlayer insulation film, which is a lower layer of an organic EL element, the volume of a concavity in each anode plate is adjusted. When ink that includes material for the intermediate layer or the like is sprayed by an inkjet method, the film thickness of the intermediate layer or the like changes in accordance with the amount of ink filing the concavity.

Organic EL display panel, display device, and method of manufacturing organic EL display panel

An organic light-emitting display panel is provided that improves luminous efficiency and luminescent color by adjusting the difference in film thickness between layers of different luminescent colors, such as intermediate layers, when the intermediate layer and light-emitting layers are formed by a wet method. By varying the film thickness of an interlayer insulation film, which is a lower layer of an organic light-emitting element, the volume of a contact hole is varied by color, thereby adjusting the volume of a concavity in each anode plate. When ink that includes material for the intermediate layer, or like, is sprayed by an inkjet method, the film thickness of the intermediate layer, or like, changes in accordance with the amount of ink filing the concavity. Therefore, by adjusting the difference in volume between concavities of different colors, the difference in film thickness between the intermediate layers, or like, is finely adjusted.

Organic light-emitting display panel, display device, and method of manufacturing organic light-emitting display panel

A display panel and method of manufacturing a display panel. A plurality of contact holes penetrate through an interlayer insulation film and have wiring lines connecting first electrode plates and second electrode plates with a thin-film transistor layer. The first electrode plates and the second electrode plates each include at least one concavity. The at least one concavity included in each of the first and second electrode plates coincide with the plurality of contact holes. A total volume of the at least one concavity in any of the first electrode plates is larger than a total volume of the at least one concavity in any of the second electrode plates, while a volume of a portion of the first organic functional layer corresponding to any of the first electrode plates at least approximates a volume of the second organic functional layer corresponding to any of the second electrode plates. A portion of the first organic functional layer entered into the at least one concavity in any of the first electrode plates is larger than a portion of the second organic functional layer entered into the at least one concavity in any of the second electrode plates, so that in locations other than the at least one concavity in the first electrode plates and the second electrode plates, the first organic functional layer is thinner than the second organic functional layer.

Organic el display panel and method of manufacturing the same

To provide an organic electroluminescence element including a structure that facilitates manufacturing of a large scale organic EL panel and a manufacturing method thereof, the organic electroluminescence element includes: an anode; a cathode; an organic luminescent layer located between the anode and the cathode; and a hole injection layer located between the anode and the organic luminescent layer. The hole injection layer comprises a mixture of molybdenum oxide and tungsten oxide that contains a molybdenum element in a range of 9 atomic percent to 35 atomic percent.

Growing community of inventors

Osaka, Japan

Tetsuro Kondoh