公开(公告)号：US12223880B2

公开(公告)日：2025-02-11

申请号：US17966247

申请日：2022-10-14

Applicant: JOLED INC.

Inventor： Hiroaki Ishii ,  Toshiyuki Kato

IPC: G09G3/20 ,  G09G3/3233

Abstract: A control device is for use in a case where frame periods, each being a period in which one image continues to be displayed, vary in length within a given range or temporarily become stable in length on a frame-by-frame basis, and accurate lengths of the frame periods are not known beforehand. The control device changes a total number of subframe periods to reconfigure the frame period with n subframe periods, where n is an integer of two or more, regardless of the frame period input, and causes the display of the image. The control device includes a signal processor that outputs an output video signal according to a first input video signal on a subframe-period-by-subframe-period basis; and a controller that supplies the output video signal output from the signal processor and a control signal for controlling an operation of the display panel to the display panel.

公开(公告)号：US12118940B2

公开(公告)日：2024-10-15

申请号：US18334930

申请日：2023-06-14

Applicant: JOLED INC.

Inventor： Hiroshi Fujimura ,  Hitoshi Tsuge

IPC: G09G3/3233

CPC classification number: G09G3/3233 ,  G09G2300/0413 ,  G09G2300/0819 ,  G09G2300/0852 ,  G09G2320/0247

Abstract: A control method is a method of a display device including a plurality of pixel circuits. Each of the pixel circuits includes a light emitting element, a drive transistor, and a pixel capacitance. The drive transistor includes a gate and a source. A frame period includes a first subframe period and at least one second subframe period. In the first subframe period, the control method includes: (A) applying a first initialization potential to the source; (B) writing a signal into the pixel capacitance; and (C) causing the light emitting element to emit light. In each of the at least one second subframe period, the control method includes: (D) maintaining the light emitting element in a non-emission state; (E) applying a second initialization potential to the source in (D); and (F) causing the light emitting element to emit light.

公开(公告)号：US12106691B2

公开(公告)日：2024-10-01

申请号：US18349616

申请日：2023-07-10

Applicant: JOLED INC.

Inventor： Takahiro Yamada

IPC: G09G3/00 ,  G01K1/02

CPC classification number: G09G3/006 ,  G01K1/026 ,  G09G2320/04 ,  G09G2330/021

Abstract: A display device includes: a substrate temperature obtainer that obtains a substrate temperature of a substrate of a display panel; a power obtainer that obtains an amount of power used by a plurality of segmented regions of the display panel, based on image data displayed on the display panel; a first increased temperature deriver that derives an increased temperature of a panel surface of the display panel based on the amount of power used by the plurality of segmented regions; and a surface temperature estimator that estimates a temperature of the panel surface based on the substrate temperature and the increased temperature.

公开(公告)号：US12013728B2

公开(公告)日：2024-06-18

申请号：US17648276

申请日：2022-01-18

Applicant: JOLED INC.

Inventor： Nobuo Naito

IPC: G06F1/16

CPC classification number: G06F1/1652 ,  G06F1/1637

Abstract: A display apparatus includes a display panel that is flexible, the display panel including a display surface and a back surface on a back side of the display surface, and a protection sheet attached to the back surface of the display panel and formed from woven fabric.

公开(公告)号：US11943958B2

公开(公告)日：2024-03-26

申请号：US17421242

申请日：2020-01-08

Applicant: JOLED INC.

Inventor： Yuichiro Ishiyama ,  Takahiro Seki

IPC: H01L29/08 ,  H10K50/844 ,  H10K59/12 ,  H10K77/10

CPC classification number: H10K50/844 ,  H10K59/12 ,  H10K77/111

Abstract: A display panel according to one embodiment of the disclosure includes: a flexible substrate; a plurality of self-luminescent elements; a plurality of TFT circuits provided between the flexible substrate and the plurality of self-luminescent elements; a first inorganic film covering each of the TFT circuits; a second inorganic film covering each of the self-luminescent elements; and a resin layer covering the second inorganic film and covering at least a portion of the first inorganic film in contact with an end portion of the second inorganic film. The first inorganic film is provided between the plurality of TFT circuits and the plurality of self-luminescent elements, and has a step portion. The step portion is a thinned portion of the first inorganic film opposed to an end portion of the flexible substrate.

公开(公告)号：US11893932B2

公开(公告)日：2024-02-06

申请号：US17999151

申请日：2021-05-17

Applicant: JOLED INC.

Inventor： Toshiyuki Kato

IPC: G09G3/3225

CPC classification number: G09G3/3225 ,  G09G2310/0286 ,  G09G2330/021

Abstract: A display apparatus includes a display panel including a plurality of pixels, and a current limiting circuit that limits current consumption in the plurality of pixels, the current limiting circuit includes a gain computation circuit that computes a screen power value in reference to a pixel value included in a video signal and that determines a gain in reference to the screen power value, and a gain multiplication circuit that multiplies the pixel value by the gain and that outputs a limit signal including the pixel value multiplied by the gain, the display panel includes a display unit, and a lighting control circuit that controls a lighting state of the plurality of pixels in reference to a predicted power value computed according to the limit signal, to reduce a power consumption value in the plurality of pixels to a value equal to or smaller than a control target power value, the gain is 1 when the screen power value is equal to or smaller than the control target power value, and the gain is a value equal to or smaller than a value obtained by dividing the control target power value by the screen power value, in other cases.

公开(公告)号：US11700734B2

公开(公告)日：2023-07-11

申请号：US16953370

申请日：2020-11-20

Applicant: JOLED Inc.

Inventor： Toshiyuki Akiyama ,  Yasuhiro Sekimoto ,  Muneharu Sato ,  Shinichiro Ishino ,  Tomohiko Oda ,  Mineki Hasegawa

IPC: H10K50/11 ,  H10K71/00 ,  H10K101/40 ,  H10K50/16 ,  H10K59/35 ,  H10K101/30

CPC classification number: H10K50/11 ,  H10K71/00 ,  H10K50/166 ,  H10K59/35 ,  H10K2101/30 ,  H10K2101/40

Abstract: An organic electroluminescence element including an anode, a light-emitting layer, a functional layer, and a cathode stacked in this order. The light-emitting layer and the functional layer are in contact with each other. Hole mobility of the light-emitting layer is greater than electron mobility of the light-emitting layer. The electron mobility of the light-emitting layer is equal to or greater than an effective electron mobility of the functional layer. A highest occupied molecular orbital (HOMO) level of a first functional material included in the light-emitting layer is at least 0.4 eV greater than a HOMO level of a second functional material included in the functional layer.

公开(公告)号：US20230169920A1

公开(公告)日：2023-06-01

申请号：US17987273

申请日：2022-11-15

Applicant: JOLED INC.

Inventor： Toshiyuki KATO

IPC: G09G3/3233

CPC classification number: G09G3/3233 ,  G09G2310/08 ,  G09G2330/02

Abstract: A current limiting circuit includes: a delay circuit that receives a video signal, and outputs a delay signal obtained by delaying the video signal by a time period corresponding to one frame; a calculation circuit that receives the video signal, and calculates a gain by which the delay signal is to be multiplied, based on power consumption of the pixels corresponding to the delay signal and power consumption of the pixels corresponding to the video signal; and a gain multiplication circuit that multiplies the delay signal by the gain.

公开(公告)号：US20230063788A1

公开(公告)日：2023-03-02

申请号：US17821969

申请日：2022-08-24

Applicant: JOLED INC.

Inventor： Nobuo NAITO

IPC: H01L51/52

Abstract: A display device includes a display panel capable of being rolled up or folded and a cover member that is placed upon the display panel and that is capable of being rolled up or folded together with the display panel. A thermal shrinkage rate of the cover member in a bending direction along which the display panel is bent when the display panel is rolled up is smaller than a thermal shrinkage rate of the cover member in a perpendicular direction that is perpendicular to the bending direction, or a thermal shrinkage rate of the cover member in a bending direction along which the display panel is bent when the display panel is folded is smaller than a thermal shrinkage rate of the cover member in a perpendicular direction that is perpendicular to the bending direction.

公开(公告)号：US20230010101A1

公开(公告)日：2023-01-12

申请号：US17811156

申请日：2022-07-07

Applicant: JOLED INC.

Inventor： Takahiro SEKI

IPC: B32B3/02 ,  B32B7/022 ,  B32B5/18

Abstract: Provided is a display apparatus including a display panel that is capable of being rolled up, and a protection member, the protection member including a back surface portion layered closer to a back surface of the display panel, a first folded portion folded toward a front surface of the display panel from one end of the back surface portion in an orthogonal direction orthogonal to a roll-up direction in which the display panel is rolled up, and a second folded portion folded toward the front surface from another end of the back surface portion in the orthogonal direction. In the display apparatus, the first folded portion includes a first front surface portion arranged at one end of the front surface in the orthogonal direction, and the second folded portion includes a second front surface portion arranged at another end of the front surface in the orthogonal direction.