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1 | US10916203B2 |
Display apparatus
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Publication/Patent Number: US10916203B2 | Publication Date: 2021-02-09 | Application Number: 14/209,244 | Filing Date: 2014-03-13 | Inventor： Tsuge, Hitoshi | Assignee: JOLED INC | IPC: G09G3/3291 | Abstract: A display apparatus has an image display unit having a plurality of arrayed pixel circuits, and an image signal compensation circuit compensating an image signal and outputs the compensated signal to the image display unit. Each of the pixel circuits has a compensating capacitor which compensates the threshold voltage of the driving transistor. The image signal compensation circuit has a compensation memory storing a compensation data for compensating the current variation of the driving transistors, a first comparison circuit which compares the image signal and first threshold value, and an arithmetic circuit compensating the image signal. When the image signal has a luminance larger than the threshold value, the compensation is performed. | |||
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2 | US10892429B2 |
Organic EL element and display device
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Publication/Patent Number: US10892429B2 | Publication Date: 2021-01-12 | Application Number: 15/526,574 | Filing Date: 2015-11-17 | Inventor： Yoneda, Kazuhiro Matsusue, Noriyuki | Assignee: Joled inc | IPC: H01L51/00 | Abstract: An organic electroluminescent (EL) element includes: a first electrode; an interlayer formed above the first electrode; an organic light-emitting layer formed using the interlayer as a foundation; and a second electrode formed above the organic light-emitting layer. The organic light-emitting layer contains at least a host material and a dopant material. The interlayer is formed using a material which has an energy gap larger than an energy gap of the dopant material and a highest occupied molecular orbital (HOMO) level deeper than a HOMO level of the dopant material. | |||
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3 | EP3716257B1 |
EL DISPLAY PANEL, METHOD OF DRIVING THE SAME, AND EL DISPLAY DEVICE
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Publication/Patent Number: EP3716257B1 | Publication Date: 2021-01-20 | Application Number: 20164137.0 | Filing Date: 2002-09-06 | Inventor： Takahara, Hiroshi Tsuge, Hitoshi | Assignee: Joled inc | IPC: G09G3/20 | ||||
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4 | US10964898B2 |
Protection sheet, display, and electronic apparatus
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Publication/Patent Number: US10964898B2 | Publication Date: 2021-03-30 | Application Number: 16/524,714 | Filing Date: 2019-07-29 | Inventor： Seki, Takahiro Yamazaki, Katsumasa | Assignee: Joled inc | IPC: H01L29/08 | Abstract: A display includes a display panel and a first protection sheet. The display panel has flexibility and a light output face. The first protection sheet is provided on the light output face and includes a first shock dispersion layer, a first strain relaxation layer, and a first shock absorption layer. The first shock dispersion layer includes a flexible reinforced-glass member, a flexible hard-coat film, or a flexible double-sided hard-coat film. The first strain relaxation layer includes a wet-laminated layer or a dry-laminated layer that is in close contact with a surface of the first shock dispersion layer adjacent to the display panel. The first shock absorption layer includes a gel layer having a thickness of submillimeter order or greater. The first shock absorption layer, the first strain relaxation layer, and the first shock dispersion layer are laminated in this order from the light output face of the display panel. | |||
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5 | US10909915B2 |
Light emitting device
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Publication/Patent Number: US10909915B2 | Publication Date: 2021-02-02 | Application Number: 16/413,221 | Filing Date: 2019-05-15 | Inventor： Fukuda, Toshihiro | Assignee: Joled inc | IPC: G09G3/3225 | Abstract: Disclosed is a light emitting device which includes organic electroluminescent sections each including a first electrode layer, an organic light emitting layer, a second electrode layer and a reflective layer in this order, and a light extraction surface. The reflective layer includes two reflective interfaces. In each of the organic electroluminescent sections, a microcavity structure is formed by a structure including a first reflective interface, a second reflective interface, and the two reflective interfaces. The organic electroluminescent sections include first organic electroluminescent sections and second organic electroluminescent sections. The microcavity structure is configured in such a manner that the first reflective interface and the second reflective interface intensify the light in the first wavelength band and the light in the second wavelength band, and that the two reflective interfaces weaken the light in the first wavelength band and intensify the light in the second wavelength band. | |||
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6 | US10957722B2 |
Method of manufacturing flexible device using multidirectional oblique irradiation of an interface between a support substrate and a flexible substrate
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Publication/Patent Number: US10957722B2 | Publication Date: 2021-03-23 | Application Number: 15/603,406 | Filing Date: 2017-05-23 | Inventor： Kinoshita, Tomoatsu Fujimori, Takashige Kato, Yuichi | Assignee: Joled inc | IPC: H01L27/12 | Abstract: A method of manufacturing a flexible device includes joining a first surface of a support substrate to a back surface of a flexible substrate, the first surface being opposite to a second surface of the support substrate; forming an element layer on a front surface of the flexible substrate; and performing multidirectional oblique irradiation of an interface and its vicinity between the support substrate and the flexible substrate with laser light from the second surface of the support substrate to detach the support substrate from the flexible substrate. | |||
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7 | EP3800628A2 |
DISPLAY DEVICE
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Publication/Patent Number: EP3800628A2 | Publication Date: 2021-04-07 | Application Number: 20192362.0 | Filing Date: 2020-08-24 | Inventor： Homura, Shigeo | Assignee: Joled inc | IPC: G09G3/3233 | Abstract: A display device (1) includes: pixels (110) arranged in a matrix in rows and columns; a plurality of write signal lines (WS) for selecting a pixel row to which a data voltage is to be written; a gate driver (12) that supplies a gate signal; a plurality of data signal lines (SIG) for writing the data voltage; a data driver (13) that supplies the data voltage; a data selector circuit (120) that supplies, per at least one data signal line (SIG) by time-division, the data voltage; and a controller (20). Each of the pixels (110) includes a light-emitting element, a capacitor element (112), and a drive transistor (TD) that supplies a current in accordance with the voltage held by the capacitor element (112) to the light-emitting element. The controller (20) causes the gate driver (12) and the data driver (13) to perform an initialization operation on pixels (110) in a second pixel row after a period during which a write operation is performed on pixels (110) in a first pixel row. | |||
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8 | US2021104193A1 |
DISPLAY DEVICE
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Publication/Patent Number: US2021104193A1 | Publication Date: 2021-04-08 | Application Number: 17/002,157 | Filing Date: 2020-08-25 | Inventor： Homura, Shigeo | Assignee: Joled inc | IPC: G09G3/3233 | Abstract: A display device includes: pixels arranged in a matrix; a plurality of write signal lines for selecting a pixel row to which a data voltage is to be written; a gate driver that supplies a gate signal; a plurality of data signal lines for writing the data voltage; a data driver that supplies the data voltage; a data selector circuit that supplies, per at least one data signal line by time division, the data voltage; and a controller. Each of the pixels includes a light-emitting element, a capacitor element, and a drive transistor that supplies a current in accordance with the voltage held by the capacitor element to the light-emitting element. The controller causes the gate driver and the data driver to perform an initialization operation on pixels in a second pixel row after a period during which a write operation is performed on pixels in a first pixel row. | |||
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9 | US10937988B2 |
Organic EL display panel and method of manufacturing organic EL display panel
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Publication/Patent Number: US10937988B2 | Publication Date: 2021-03-02 | Application Number: 16/726,208 | Filing Date: 2019-12-23 | Inventor： Nishimura, Masaki Ajiki, Hiroyuki Yada, Shuhei Shinokawa, Yasuharu | Assignee: Joled inc | IPC: H01L51/52 | Abstract: An organic EL display panel includes a substrate, a plurality of pixel electrodes disposed in a matrix pattern over the substrate, a first current feeding auxiliary electrode layer disposed to extend in a column or row direction in at least one of gaps between adjacent ones of the pixel electrodes over the substrate, a second current feeding auxiliary electrode layer that contains aluminum as a main constituent and is disposed to be superposed on the first current feeding auxiliary electrode layer, a plurality of light emitting layers disposed on the plurality of pixel electrodes, and a common electrode layer disposed continuously to cover the first current feeding auxiliary electrode layer and the second current feeding auxiliary electrode layer as well as an upper side of the plurality of light emitting layers. | |||
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10 | US2021090499A1 |
CURRENT LIMITING CIRCUIT, DISPLAY DEVICE, AND CURRENT LIMITING METHOD
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Publication/Patent Number: US2021090499A1 | Publication Date: 2021-03-25 | Application Number: 17/027,090 | Filing Date: 2020-09-21 | Inventor： Kato, Toshiyuki | Assignee: Joled inc | IPC: G09G3/3233 | Abstract: A current limiting circuit includes: a gain calculation circuit which calculates a screen power value based on pixel values and calculates a gain based on the screen power value; and a gain multiplication circuit which multiplies the pixel values by the gain, and when a maximum value of the pixel values exceeds a first threshold value, the gain calculation circuit calculates the screen power value by use of a common pixel value greater than or equal to the maximum value instead of the pixel values, and when the screen power value exceeds a control target power value, the gain calculation circuit sets the gain to a ratio of the control target power value with respect to the screen power value, and when the screen power value is less than or equal to the control target power value, the gain calculation circuit sets the gain to 1. | |||
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11 | US10957856B2 |
Method and apparatus for manufacturing organic el display panel
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Publication/Patent Number: US10957856B2 | Publication Date: 2021-03-23 | Application Number: 16/295,407 | Filing Date: 2019-03-07 | Inventor： Yamauchi, Yasuhiro Ishino, Shinichiro Oda, Tomohiko Hasegawa, Mineki Sekimoto, Yasuhiro | Assignee: Joled inc | IPC: H01L51/00 | Abstract: Disclosed is a method for manufacturing an organic EL display panel in which a plurality of organic electroluminescence elements each including an organic layer are arranged on an upper side of a substrate. The method includes applying an ink obtained by dissolving or dispersing an organic material in a solvent to a preset application area over the substrate, and cooling the ink applied in the applying within a period until the ink is dried, to lower an ink temperature to a second temperature lower than a first temperature of the ink at a time of application thereof. | |||
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12 | US2021104708A1 |
SELF-LUMINOUS DISPLAY PANEL
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Publication/Patent Number: US2021104708A1 | Publication Date: 2021-04-08 | Application Number: 17/062,643 | Filing Date: 2020-10-05 | Inventor： Fukuoka, Kenta | Assignee: Joled inc | IPC: H01L51/52 | Abstract: A self-luminous display panel including light-emitting elements 100, column banks 122Y, and a light-shielding film 133. The light-emitting elements 100 correspond one-to-one with sub-pixels 100se, each sub-pixel 100se in a pixel emitting a different color of light. The column banks 122Y are disposed between the light-emitting elements 100 in a row direction, each having an elongated shape in a column direction. The light-shielding film 133 has openings 133a at positions corresponding to the light-emitting elements 100 in plan view, downstream in a light emission direction of the light-emitting elements 100. In plan view, distances in the row direction between edges of the openings 133a of the light-shielding film 133 and defined points of the light-emitting elements 100 are different depending on light emission color of the light-emitting elements 100, due to different widths of portions of the column banks 122Y adjacent to the light-emitting elements 100. | |||
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13 | US10932365B2 |
Flexible wiring board and display device
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Publication/Patent Number: US10932365B2 | Publication Date: 2021-02-23 | Application Number: 16/456,431 | Filing Date: 2019-06-28 | Inventor： Nakano, Yutaka | Assignee: Joled inc | IPC: H05K1/00 | Abstract: A flexible wiring board (a first wiring board) includes: an insulating substrate which is flexible; a first terminal which is conductive and is disposed on the insulating substrate; a second terminal which is conductive and is disposed on the insulating substrate; and a no-connection (NC) terminal which is conductive and is disposed on the insulating substrate between the first terminal and the second terminal. The first terminal, the NC terminal, and the second terminal are arranged at a uniform pitch in an arranging direction that is predetermined, and a width of the NC terminal in the arranging direction is smaller than a width of the first terminal in the arranging direction and a width of the second terminal in the arranging direction. | |||
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14 | US10935214B2 |
Light-emitting device and electronic apparatus
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Publication/Patent Number: US10935214B2 | Publication Date: 2021-03-02 | Application Number: 16/455,780 | Filing Date: 2019-06-28 | Inventor： Fukuda, Toshihiro | Assignee: Joled inc | IPC: H01L29/20 | Abstract: A light-emitting device includes pixels each including subpixels. Each subpixel includes light-emitting elements that emit respective pieces of light of colors different from each other, and a light-shielding film having openings at respective positions where the openings are opposed to the respective light-emitting elements at predetermined intervals. The openings have respective widths different from each other. The widths of the respective openings in a first direction and a second direction are sized to allow the light-shielding film to block a portion of the pieces of light emitted from the respective light-emitting elements and thereby to cause a 45-degree luminance viewing angle to be different between the first and second directions, and are sized to cause color differences (Δu′v′) at a 45-degree chromaticity viewing angle (u′v′) in the first and second directions to be 0.020 or less. The 45-degree luminance viewing angle is expressed in a unit of cd/m2. | |||
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15 | US2021066670A1 |
DISPLAY DEVICE AND METHOD OF MANUFACTURING SAME
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Publication/Patent Number: US2021066670A1 | Publication Date: 2021-03-04 | Application Number: 17/003,991 | Filing Date: 2020-08-27 | Inventor： Matsuoka, Kenichi | Assignee: Joled inc | IPC: H01L51/52 | Abstract: Disclosed herein is a display device including a plurality of light emitting portions arranged in a form of a matrix, a sealing layer disposed on the plurality of light emitting portions, a light shielding layer disposed in a gap between the light emitting portions adjacent to each other in a row direction on the sealing layer and extending in a column direction, a transparent partition wall layer disposed on the light shielding layer and extending in the column direction, and a color filter disposed in a gap in the light shielding layer and the transparent partition wall layer on the sealing layer. | |||
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16 | US10896638B2 |
Luminance controlling unit, light-emitting unit, and method of controlling luminance
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Publication/Patent Number: US10896638B2 | Publication Date: 2021-01-19 | Application Number: 16/049,010 | Filing Date: 2018-07-30 | Inventor： Ishii, Hiroaki Isobe, Teppei | Assignee: Joled inc | IPC: G09G3/3208 | Abstract: A luminance controlling unit includes a luminance controller that controls luminance of a pixel array. The pixel array includes pixels each including a current-driven self-luminescent element. The luminescent controller sets, on the basis of an image signal corresponding to a frame image, a threshold that is directed to detection of a maximum signal level of the image signal, and performs dynamic control of a potential difference between a first voltage and a second voltage on the basis of the maximum signal level detected with reference to the set threshold. The first voltage is outputted from a first voltage source adjacent to an anode of the self-luminescent element, and the second voltage is outputted from a second voltage source adjacent to a cathode of the self-luminescent element. | |||
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17 | US10923030B2 |
EL display apparatus
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Publication/Patent Number: US10923030B2 | Publication Date: 2021-02-16 | Application Number: 17/007,741 | Filing Date: 2020-08-31 | Inventor： Takahara, Hiroshi Tsuge, Hitoshi | Assignee: Joled inc | IPC: G09G3/3241 | Abstract: An EL display apparatus is provided. A display screen includes pixels arranged in a matrix, with each pixel including an EL device and a pixel circuit. A source driver circuit is configured to output an analog video signal to each pixel. A gate driver circuit is on at least one side of the display screen, with the gate driver circuit including first and second gate driver circuits. Each pixel includes a driving transistor, a first switch transistor, and a second switch transistor. A gate terminal of the first switch transistor is connected to a first gate signal line of the first gate driver circuit, and a gate terminal of the second switch transistor is connected to a second gate signal line of the second gate driver circuit. The first and second switch transistors are on/off controlled, independently, by the first and second gate driver circuits. | |||
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