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    Electrowetting element with protrusion
    1.
    发明授权
    Electrowetting element with protrusion 有权

    公开(公告)号：US10802266B1

    公开(公告)日：2020-10-13

    申请号：US15711744

    申请日：2017-09-21

    Applicant: Amazon Technologies, Inc.

    Inventor： Toru Sakai ,  Robert Andrew Hayes ,  Karel Johannes Gerhardus Hinnen ,  Tulasi Sridhar Reddy Guntaka

    IPC: G02B26/00 ,  G09G3/34 ,  B32B37/00 ,  B29C65/00

    Abstract: An electrowetting element comprising a first fluid, a second fluid immiscible with the first fluid, a first electrode, a second electrode in contact with the second fluid and a first and second support plate. The first support plate comprises the first electrode and a surface. The second support plate comprises a protrusion which overlaps a first surface portion of the surface and which, with a first voltage with a substantially zero magnitude applied between the first electrode and the second electrode, contacts the second fluid without substantially contacting the first fluid. Upon application of a second voltage with a non-zero magnitude between the first electrode and the second electrode, the first fluid moves such that there is substantially no contact between the first fluid and the first surface portion.

    Electrowetting display device with integrated pixel spacer
    2.
    发明授权
    Electrowetting display device with integrated pixel spacer 有权

    公开(公告)号：US10656408B1

    公开(公告)日：2020-05-19

    申请号：US15251964

    申请日：2016-08-30

    Applicant: Amazon Technologies, Inc.

    Inventor： Toru Sakai ,  Abhishek Kumar ,  Jacco van der Gaag

    IPC: G02B26/00 ,  H05K1/09

    Abstract: An electrowetting display device includes a first support plate and a plurality of pixel walls on the first support plate. The plurality of pixel walls are associated with an electrowetting pixel. A pixel electrode is on the first support plate for applying a voltage within the electrowetting pixel. The device includes a second support plate over the first support plate, an organic layer on the second support plate, and an electrode layer on the organic layer. The electrode layer is patterned to include an opening. A pixel spacer is coupled to the second support plate. The pixel spacer includes a first portion in direct contact with the organic layer through the opening in the electrode layer. The pixel spacer is in contact with at least one pixel wall in the plurality of pixel walls.

    Apparatus and method for reducing power consumption during display driving
    4.
    发明授权
    Apparatus and method for reducing power consumption during display driving 有权

    公开(公告)号：US10409053B1

    公开(公告)日：2019-09-10

    申请号：US15188535

    申请日：2016-06-21

    Applicant: AMAZON TECHNOLOGIES, INC.

    Inventor： Abhishek Kumar ,  Steven Ramos Carneiro ,  Toru Sakai

    IPC: G09G3/34 ,  G02B26/00 ,  H01L29/66

    Abstract: An electrowetting display device includes a first support plate and an opposing second support plate and an electrowetting pixel region between the first support plate and the second support plate. A thin film transistor (TFT) structure is over the first support plate and associated with the electrowetting pixel region. The TFT structure includes a first metal layer over the first support plate. The first metal layer includes a gate and a reflective metal portion. A semiconductor layer is over the gate. A dielectric layer is on the first metal layer. The dielectric layer includes a first contact hole extending along at least a portion of a length of the dielectric layer. A light sensing element is disposed over the dielectric layer and in ohmic contact with the reflective metal portion.

    Voltage measurement of pixels of a display device
    7.
    发明授权
    Voltage measurement of pixels of a display device 有权

    公开(公告)号：US09939484B1

    公开(公告)日：2018-04-10

    申请号：US14135090

    申请日：2013-12-19

    Applicant: Amazon Technologies, Inc.

    Inventor： Toru Sakai ,  Jozef Elisabeth Aubert

    IPC: G01R31/26 ,  G01R31/28 ,  G09G3/34

    CPC classification number: G01R31/2601 ,  G01R31/2896 ,  G09G3/348

    Abstract: A method for operating a display device includes configuring at least a portion of a row or at least a portion of a column of pixels of the display device to produce interconnected pixels, wherein the interconnected pixels are interconnected to one another in an electrically parallel configuration to create a parallel capacitance that is larger than capacitances of each of the interconnected pixels; connecting a voltage-measuring probe to drains of TFTs of the interconnected pixels; applying source voltages to the TFTs of the interconnected pixels from one or more source lines and applying a gate voltage to the TFTs of the interconnected pixels from one or more gate lines; and measuring voltage of the TFT drains of the interconnected pixels.

    System and method for electrowetting display device including pixels with self-aligned IGZO transistors
    8.
    发明授权
    System and method for electrowetting display device including pixels with self-aligned IGZO transistors 有权

    公开(公告)号：US10281713B1

    公开(公告)日：2019-05-07

    申请号：US15197606

    申请日：2016-06-29

    Applicant: Amazon Technologies, Inc.

    Inventor： Abhishek Kumar ,  Toru Sakai

    IPC: G02B26/00 ,  G02F1/153 ,  H01L29/24 ,  H01L29/786 ,  H01L27/12 ,  H01L29/66 ,  H01L21/02 ,  H01L21/385

    Abstract: A display device and a method for making the same are provided. In the method, source and drain contacts are patterned on a buffer layer. An IGZO layer is depositing over at least a portion of the source contact and a portion of the drain contact. A gate structure is formed over the IGZO layer. A silicon nitride layer is deposited over the gate structure and the IGZO layer to form a first doped region in the IGZO layer and a second doped region in the IGZO layer. A pixel electrode is formed over the buffer layer. A plurality of pixel walls are formed over the buffer layer, the plurality of pixel walls being associated with an electrowetting pixel and the pixel electrode being configured to a apply voltage within the electrowetting pixel. At least one of the source contact and the drain contact is connected to the pixel electrode.

    Thin film transistor for electrowetting display element
    10.
    发明授权
    Thin film transistor for electrowetting display element 有权

    公开(公告)号：US10031332B1

    公开(公告)日：2018-07-24

    申请号：US14980752

    申请日：2015-12-28

    Applicant: Amazon Technologies, Inc.

    Inventor： Toru Sakai ,  Abhishek Kumar

    IPC: G02B26/00 ,  H01L29/786 ,  H01L27/12

    Abstract: Electrowetting display elements comprising a thin film transistor are disclosed. In examples, the thin film transistor may comprise a first gate terminal, a semiconducting channel overlying at least a portion of the first gate terminal, a source terminal formed on at least a first portion of the semiconducting channel, and a drain terminal formed on at least a second portion of the semiconducting channel, different from the first portion of the semiconducting channel. The source and drain terminals may form an inter-terminal region of the semiconducting channel located between the source terminal and the drain terminal. A second gate terminal may be formed overlying at least a portion of the inter-terminal region so as to shield the inter-terminal region from light and to increase the conductivity of the semiconducting channel.

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