Tohru Okabe has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
Abstract: A display device includes: a base substrate; a thin-film transistor layer provided on the base substrate, a light-emitting element layer provided on the thin-film transistor layer; and a sealing film provided on the light-emitting element. Each of light-emitting elements includes: a first electrode; a functional layer; and a second electrode stacked on top of another in a stated order. The display device includes: a display region; a frame region; and a non-display region. The non-display region includes a through hole. The display device includes a separation wall shaped into a frame and provided to the non-display region along an edge of the through hole. The separation wall includes: a first resin layer: and a first metal layer provided on the first resin layer. The first metal layer includes a first protrusion shaped into a canopy, and protruding from the first resin layer toward the display region.
Abstract: In a display region, each first power-source line and each second power-source line intersecting with the first power-source line are electrically connected together via a contact hole in a second inorganic insulating film. In addition, each source line and each second power-source line intersect with each other via the second inorganic insulating film and a first organic insulating film.
Abstract: According to an aspect of the disclosure, a lead wiring line provided in a frame region to extend therein while intersecting with a frame-shaped dam wall, formed of a same material and in a same layer as each of display wiring lines in which a first metal layer, a second metal layer, and a third metal layer are layered in sequence, electrically connected to the display wiring line on a display region side, and electrically connected to a terminal on a terminal portion side, the third metal layer is provided to cover a side surface of the first metal layer, and a side surface and an upper face of the second metal layer.
Abstract: The present application discloses a current-driven display device capable of providing satisfactory display without flickering even when pause drive is performed. In a pixel circuit 15, a first initialization transistor T4 initializes a gate voltage Vg, and thereafter a voltage on a data signal line Di is written to a holding capacitor Cst via a write control transistor T2 and a drive transistor T1. Thereafter, emission control transistors T5 and T6 are turned on, so that a drive current I1 from the drive transistor T1 causes an organic EL element OL to emit light. During this emission period, even if the gate voltage Vg is decreased due to a leakage current through the first initialization transistor T4 in an OFF state, the decrease is compensated for by increasing a threshold control voltage being provided to a threshold control terminal TG of the drive transistor T1.
Abstract: A pixel circuit including a drive transistor and a capacitor electrically connected to a control terminal of the drive transistor, a light-emitting element, a first power supply voltage line intersecting a data signal line, and a second power supply voltage line electrically connected to the control terminal via the capacitor are provided, and in a writing period in which a scanning signal line becomes active, the first power supply voltage line and a second conduction terminal of the drive transistor are not conductive with each other, and in a light emission period of the light-emitting element, the first power supply voltage line and the second conduction terminal of the drive transistor are conductive with each other.
Abstract: A display device includes a short ring TFT, wherein the short ring TFT includes a semiconductor layer, a first gate electrode, a second gate electrode, a first gate insulating film provided between the semiconductor layer and the first gate electrode, and a second gate insulating film provided between the semiconductor layer and the second gate electrode, one of a pair of adjacent lead-out wiring lines is electrically connected to a source region of the semiconductor layer, the other of the pair of adjacent lead-out wiring lines is electrically connected to a drain region of the semiconductor layer, one of the first gate electrode and the second gate electrode is electrically connected to the source region or the drain region, and the other of the first gate electrode and the second gate electrode is electrically connected to a threshold value control wiring line.
Abstract: A display devise includes: a resin substrate; a TFT layer; and a light-emitting element. A bending portion is provided with a first resin film formed of the same material and in the same layer as those of a first flattening film, and the first resin film fills a slit. An upper face of the first resin film is provided with a plurality of first connection wiring lines formed of a third metal film, and the plurality of first connection wiring lines extend in parallel to each other in a direction intersecting the extending direction of the bending portion. The plurality of first connection wiring lines are electrically connected to a plurality of first lead-out wiring lines, respectively in a display region side of the slit, and electrically connected to a plurality of second lead-out wiring lines, respectively in a terminal portion side of the slit.
Abstract: A display device includes: a sealing film provided so as to cover light-emitting elements at least partially constituting a display area and including a first inorganic film, an organic film, and a second inorganic film stacked in this order; and a first damming wall in a frame area around the display area, the first damming wall surrounding the display area and overlapping a peripheral portion of the organic film, wherein at least one inorganic insulation film in a TFT layer has an upwardly open, first opening at least in a part of an area between the display area and the first damming wall, and the organic film is provided so as to fill in the first opening.
Abstract: A display device includes: a plurality of control lines; a plurality of power supply lines; a plurality of data signal lines; an oxide semiconductor layer; a first metal layer; a gate insulation film; a first inorganic insulation film; a second metal layer; a second inorganic insulation film; and a third metal layer. The oxide semiconductor layer, in a plan view, contains therein insular semiconductor lines between a plurality of drivers and a display area. The semiconductor lines cross the plurality of control lines and the plurality of power supply lines, are in contact with the plurality of control lines via an opening in a gate insulation film, are in contact with the plurality of power supply lines via an opening in the first inorganic insulation film, and have a plurality of waisted portions.
Abstract: A display device includes a plurality of picture elements, wherein a first electrode is formed in each of the plurality of picture elements, a cover layer is formed such that an opening of the first electrode is formed, a spacer in a layer identical to the cover layer is provided between two of the first electrodes, the spacer is formed with a height greater than a height of the cover layer, and an outer edge portion of the spacer is spaced from an outer edge portion of the cover layer.
Abstract: A Thin Film Transistor (TFT) substrate includes a first semiconductor film, a first electrically conductive member provided in a layer higher than the first semiconductor film, an interlayer insulating film provided in a layer higher than the first electrically conductive member and including a first through hole, a second semiconductor film provided in a layer higher than the interlayer insulating film, a second electrically conductive member provided in a layer higher than the second semiconductor film, an organic insulating film provided in a layer higher than the second electrically conductive member and including a second through hole, and a third electrically conductive member provided in a layer higher than the organic insulating film. A contact hole extends through the first and the second through hole to the first electrically conductive member.
Abstract: A display area is provided with a plurality of first conductive layers formed of the same material and in the same layer as first electrodes. The first conductive layers are each positioned under a corresponding one of plurality of first photo spacers. A frame area is provided with a second conductive layer formed of the same material and in the same layer as the first electrodes. The second conductive layer includes a plurality of openings each formed under a corresponding one of a plurality of second photo spacers.
Abstract: An active matrix substrate including a resin substrate including a plurality of external connection terminals arranged near a display region, the active matrix substrate includes: a plurality of first lead wires each extending from one of the external connection terminals to the display region; and a plurality of second lead wires each extending from one of the external connection terminals to a separation line, the second lead wires being arranged with an arrangement pitch along the separation line, and the arrangement pitch of the second lead wires being greater than an arrangement pitch of the first lead wires.
Abstract: In a TFT layer provided on a base substrate, a first metal film, a first inorganic insulating film, a second metal film, a second inorganic insulating film, a third metal film, a first flattening film, a fourth metal film, and a second flattening film are sequentially layered. In a frame region, a slit is formed in the second flattening film to surround a display region, a first conductive layer formed by the fourth metal film is provided on the first flattening film exposed from the slit, and a TFT of a drive circuit is provided on the base substrate side of the first conductive layer to overlap with the first conductive layer.
Abstract: [Problem] To provide a composition for a black matrix which is a material suitable for manufacturing a black matrix, which is suitable for a high luminance display device structure and has high heat resistance and high light-shielding properties. [Means for Solution] The present invention uses a composition for a black matrix comprising: (I) a black colorant containing carbon black having a volume average particle diameter of 1 to 300 nm; (II) a siloxane polymer to be obtained by hydrolyzing and condensing a silane compound represented by a prescribed formula in the presence of an acidic or basic catalyst; (III) surface modified silica fine particles; (IV) a thermal base generator; and (V) a solvent.
Abstract: An active matrix substrate in which step-caused disconnection of a metal film in a contact hole does not easily occur includes a first to third insulating films and first to third metal films on a glass substrate and a contact hole electrically connecting the first and second metal film, the contact hole including first to third hole present respectively in the first to third insulating films, the first and third metal films being in contact with each other inside the first hole, the second insulating film and an oxide semiconductor film overlapping with each other in a region below the third hole, the second and third metal films being in contact with each other in a region above the first insulating film and either inside or below the third hole.
Abstract: A display device includes a resin substrate, a TFT layer, a light-emitting element, a frame region, a terminal portion, a bending portion, a plurality of frame wiring lines, and at least a one-layer inorganic film. The light-emitting element includes a metal electrode provided on a flattening film included in the TFT layer. In the bending portion, an opening is formed in at least the one-layer inorganic film. A frame flattening film is provided to fill the opening. The plurality of frame wiring lines are provided on the frame flattening film across the opening. The frame wiring line is formed of a metal material identical to the metal material of the metal electrode. The frame flattening film is formed of a resin material identical to the resin material of the flattening film.
Abstract: An active matrix substrate having low susceptibility to contact failure between two conductor films is provided. An oxide semiconductor film converted into a conductor is provided in a layer between a substrate and a first metal film. Within a contact hole, the oxide semiconductor film converted into a conductor is in contact with a second metal film. Outside of the contact hole, the oxide semiconductor film converted into a conductor is in contact with the first metal film.
Abstract: Frame wiring lines are provided in a frame region, a flattening film in which a frame-shaped slit is formed in the frame region is provided in the display region and the frame region, a plurality of first electrodes constituting light-emitting elements are provided on the flattening film, and conductive layer made of the same material and formed in the same layer as those of each of the plurality of first electrodes are provided covering at least end faces of the frame wiring lines exposed from the slit.
Abstract: The disclosure has an object to achieve a high level of height precision for spacers on a back plane. A display device includes: edge covers having a plurality of openings in which first electrodes are exposed; and a planarization film having first flat portions, second flat portions, and contact holes. The plurality of openings respectively overlap the first flat portions in a plan view. The second flat portions are located between the plurality of openings in a plan view. Each edge cover overlapping one of the first flat portions in a plan view has, on a second electrode side, a surface that has a first height from a bottom surface of the planarization film on a substrate side. Each second flat portion has, on the second electrode side, a surface that has a second height from the bottom surface. The first height is smaller than the second height.