公开(公告)号：US20230185142A1

公开(公告)日：2023-06-15

申请号：US18078428

申请日：2022-12-09

Applicant: Sharp Display Technology Corporation

Inventor： Masakatsu TOMINAGA

IPC: G02F1/1362 ,  G02F1/1368 ,  G06F3/044

CPC classification number: G02F1/136286 ,  G02F1/1368 ,  G02F1/136222 ,  G02F1/136227 ,  G06F3/0446 ,  G06F3/0447

Abstract: A first pixel electrode and a third pixel electrode are disposed on one side of one of a plurality of column lines. A second pixel electrode and a fourth pixel electrode are disposed on another side of the one of the plurality of column lines. A third switching element is disposed on the one side of the one of the plurality of column lines. A fourth switching element is disposed on the other side of the one of the plurality of column lines. The first pixel electrode is connected to a first switching element via a first connection electrode. The second pixel electrode is connected to a second switching element via a second connection electrode. The third pixel electrode is connected to the third switching element. The fourth pixel electrode is connected to the fourth switching element.

公开(公告)号：US11675460B2

公开(公告)日：2023-06-13

申请号：US17948241

申请日：2022-09-20

Applicant: Sharp Display Technology Corporation

Inventor： Daiji Kitagawa ,  Jin Miyazawa ,  Yousuke Nakamura ,  Daisuke Suehiro

IPC: G06F3/041 ,  G09G3/36 ,  G06F3/044

CPC classification number: G06F3/04186 ,  G06F3/0412 ,  G06F3/04166 ,  G09G3/36 ,  G06F3/044 ,  G06F2203/04104 ,  G09G2340/0435 ,  G09G2354/00

Abstract: A control circuit of an in-cell touch panel device associates a touch position P1 and a touch position P2 with each other when a refresh rate is F1 and a touch-to-touch distance d1 between the successive touch positions P1 and P2 is equal to or less than a determination distance D1. The control circuit associates a touch position P3 and a touch position P4 with each other when a touch-to-touch distance d2 between the touch position P3 detected last in a period in which the refresh rate is F2 lower than F1 and the touch position P4 detected first since a period in which the refresh rate is F1 starts is equal to or less than a determination distance D2 greater than the determination distance D1.

公开(公告)号：US20230178561A1

公开(公告)日：2023-06-08

申请号：US18074551

申请日：2022-12-05

Applicant: Sharp Display Technology Corporation

Inventor： Hideki KITAGAWA ,  Yoshimasa CHIKAMA ,  Masamitsu YAMANAKA

IPC: H01L27/12

CPC classification number: H01L27/1225 ,  H01L27/124 ,  H01L27/127

Abstract: An active matrix substrate includes a substrate, a plurality of thin-film transistors, a plurality of pixel electrodes, and a first insulating layer. Each pixel electrode is formed from a transparent conducting material. Each thin-film transistor includes a gate electrode, a gate insulating layer, source and drain electrodes, and an oxide semiconductor layer. The oxide semiconductor layer includes a channel region, a source contact region, and a drain contact region. The source electrode has a stack structure including a source transparent conducting layer and a source metal layer. The drain electrode includes a drain transparent conducting layer. The drain transparent conducting layer is formed integrally with a corresponding one of the plurality of pixel electrodes.

公开(公告)号：US20230154430A1

公开(公告)日：2023-05-18

申请号：US17971672

申请日：2022-10-24

Applicant: Sharp Display Technology Corporation

Inventor： Yi-Cheng TSAI

IPC: G09G3/36

CPC classification number: G09G3/3677 ,  G09G3/3688 ,  G09G2310/0286 ,  G09G2310/061 ,  G09G2310/0267 ,  G09G2300/0842 ,  G09G2330/021

Abstract: A unit circuit constituting each stage of a shift register serving as a gate driver of a display device charges an internal node to an H level via a transistor T2 when an output signal G(n−4) of a preceding stage turns to the H level and sets the internal node to an L level via a transistor T3 when an output signal G(n+8) of a succeeding stage turns to the H level. Each of the unit circuits of last eight stages in the gate driver is provided with a transistor T4 including a gate terminal to which the signal G(n−4) is applied and a drain terminal connected to the internal node. A signal is applied to a source terminal of the transistor T4, the signal being at the H level during a period when the internal node of any of the last eight stages is to be set to the H level, and being the L level during the other periods. This suppresses a voltage fluctuation generated in the internal node when a stabilization circuit does not normally function.

公开(公告)号：US20230140018A1

公开(公告)日：2023-05-04

申请号：US17974519

申请日：2022-10-27

Applicant: Sharp Display Technology Corporation

Inventor： Tomohisa AOKI ,  Tsuyoshi ITOH ,  Tohru SAKATA ,  Miho YAMADA ,  Kohichi KUMAGAI

IPC: H01L27/12 ,  G02F1/1362 ,  G02F1/1343

Abstract: An array substrate includes a thin film transistor including a drain electrode, a first insulation film included in an upper layer than the drain electrode and including a contact hole overlapping the drain electrode, a pixel electrode included in an upper layer than the first insulation film and overlaps the drain electrode at least inside the contact hole and is connected to the drain electrode, a second insulation film included in an upper layer than the pixel electrode and overlaps the pixel electrode inside the contact hole and extends outside the contact hole, a conductive portion included in an upper layer than the second insulation film and overlaps the pixel electrode at least inside the contact hole, and an insulation portion included in an upper layer than the pixel electrode and in a lower layer than the conductive portion and overlaps the pixel electrode inside the contact hole.

公开(公告)号：US20230013661A1

公开(公告)日：2023-01-19

申请号：US17376519

申请日：2021-07-15

Applicant: Sharp Display Technology Corporation

Inventor： OLIVER JAMES BEARD ,  KOHHEI TANAKA

IPC: G09G3/3233

Abstract: A pixel circuit for a display device is disclosed. The pixel circuit may include a drive transistor configured to control an amount of current from a first power supply to a light-emitting device depending upon a voltage applied to a gate of the drive transistor. The light-emitting device includes a first terminal electrically connected to a second terminal of the drive transistor and a second terminal electrically connected to a second power supply. The pixel circuit may also include a storage capacitor including a first plate connected to the gate terminal of the drive transistor and a second plate connected to a first node. The pixel circuit may also include a plurality of transistors configured to couple the first power supply, a data voltage input line, and a preset voltage input line to the pixel circuit.

公开(公告)号：US11550187B2

公开(公告)日：2023-01-10

申请号：US17671913

申请日：2022-02-15

Applicant: Sharp Display Technology Corporation

Inventor： Yuichi Kawahira ,  Takako Koide ,  Masahiro Hasegawa ,  Akira Sakai

IPC: G02F1/13363 ,  G02F1/1335

Abstract: The liquid crystal display device includes: a first polarizer having a first transmission axis; a liquid crystal panel; a second polarizer having a second transmission axis; a biaxial retarder having a slow axis parallel to the second transmission axis; a third polarizer having a third transmission axis parallel to the second transmission axis; and a backlight, a back side polarizer portion that includes the second polarizer, the biaxial retarder, and the third polarizer satisfying the following formula (1): ΔYI2=YI2′− YI2

公开(公告)号：US20220406267A1

公开(公告)日：2022-12-22

申请号：US17750449

申请日：2022-05-23

Applicant: Sharp Display Technology Corporation

Inventor： Yohei TAKEUCHI ,  Akira TAGAWA ,  Yasuaki IWASE ,  Jun NISHIMURA

IPC: G09G3/36

Abstract: A light control panel including an image display region including a region corresponding to an image display region in a display panel and a region corresponding to a peripheral circuit region in the display panel is provided between the display panel and a backlight. A pattern image for controlling radiation of light emitted from the backlight to the display panel is displayed in the image display region in the light control panel according to an action state of the peripheral circuit in the display panel.

公开(公告)号：US20220373832A1

公开(公告)日：2022-11-24

申请号：US17743517

申请日：2022-05-13

Applicant: Sharp Display Technology Corporation

Inventor： Jun NISHIMURA ,  Akira TAGAWA ,  Yasuaki IWASE ,  Yohei TAKEUCHI

IPC: G02F1/1368 ,  G02F1/1362 ,  G02F1/1343

Abstract: An active matrix substrate includes a first pixel region defined by first and second source bus lines adjacent to each other and first and second gate bus lines adjacent to each other and further includes a first pixel electrode and a first oxide semiconductor TFT that are associated with the first pixel region. The first oxide semiconductor TFT includes an oxide semiconductor layer and a gate electrode electrically connected to the first gate bus line. The oxide semiconductor layer includes a channel region and a low-resistance region including first and second regions located on opposite sides of the channel region. When viewed in a direction normal to the substrate, the low-resistance region extends across the first source bus line to another pixel region and partially overlaps a pixel electrode disposed in the other pixel region with an insulating layer interposed therebetween.

公开(公告)号：US20220342540A1

公开(公告)日：2022-10-27

申请号：US17722155

申请日：2022-04-15

Applicant: Sharp Display Technology Corporation

Inventor： Takenori Maruyama ,  Kazutoshi Kida ,  Shinji Yamagishi ,  Takuma Yamamoto ,  Yasuhiro Sugita ,  Hiroshi Fukushima

IPC: G06F3/041 ,  G06F3/044

Abstract: A touch panel system includes a touch panel including a drive electrode, a position detection electrode, and a pressing detection electrode, and a controller configured to impart a drive signal to the drive electrode and acquire signal values from each of the position detection electrode and the pressing detection electrode. The controller detects a position of an indicator on the basis of the signal values obtained from the position detection electrode and calculates a magnitude of pressing of the indicator on the basis of signal values in a pressing detection range corresponding to the detected position of the indicator among the signal values obtained from the pressing detection electrode.