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    Apparatus and method for reducing power consumption during display driving
    1.
    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.

    Electrowetting pixel with adjustable capacitance
    3.
    发明授权
    Electrowetting pixel with adjustable capacitance 有权

    公开(公告)号：US10540936B1

    公开(公告)日：2020-01-21

    申请号：US15633429

    申请日：2017-06-26

    Applicant: Amazon Technologies, Inc.

    Inventor： Abhishek Kumar ,  Steven Ramos Carneiro ,  Xiaoran Li

    IPC: G02B26/00 ,  G09G3/36 ,  G09G3/34 ,  G11C19/18 ,  G02B1/12 ,  G02B1/06 ,  G03F7/00 ,  G03F7/16

    Abstract: An electrowetting display device is presented. The electrowetting display device includes a first support plate and a plurality of pixel walls over the first support plate. The plurality of pixel walls are associated with an electrowetting pixel. The display device includes a storage capacitor beneath the electrowetting pixel. The storage capacitor includes a first plate, a second plate, and a dielectric material having a variable relative permittivity. The dielectric material is disposed between the first plate and the second plate. The display device includes a controller configured to control the relative permittivity of the dielectric material to set a capacitance value of the storage capacitor. In embodiments, the dielectric material includes at least one of a transition metal dichalcogenide and a thin-film Barium Strontium Titanate (BST).

    DYNAMIC RESET VOLTAGE FOR AN ELECTROWETTING DISPLAY DEVICE
    6.
    发明申请
    DYNAMIC RESET VOLTAGE FOR AN ELECTROWETTING DISPLAY DEVICE 审中-公开

    公开(公告)号：US20170092203A1

    公开(公告)日：2017-03-30

    申请号：US14868131

    申请日：2015-09-28

    Applicant: Amazon Technologies, Inc.

    Inventor： Steven Ramos Carneiro ,  Pavel Novoselov

    IPC: G09G3/34 ,  G02B26/00

    CPC classification number: G09G3/348 ,  G02B26/005 ,  G09G2310/062 ,  G09G2320/0219

    Abstract: An electrowetting display device may comprise rows and columns of pixels. Each of the pixels may include a thin film transistor (TFT) that is switchable to select each of the pixels using active matrix addressing. The electrowetting display device may further comprise source lines connected to the TFT of each of the pixels; gate lines connected to the TFT of each of the pixels; and a supplemental capacitor disposed between each of the gate lines and a ground and having a capacitance approximately equal to an equivalent capacitance of a group of pixels that are interconnected with one another on one of the gate lines, wherein the group of pixels are a subset of the rows and columns of pixels.

    Energy recovery layer in an electrowetting display
    7.
    发明授权
    Energy recovery layer in an electrowetting display 有权
    电润湿显示器中的能量回收层

    公开(公告)号：US09553527B1

    公开(公告)日：2017-01-24

    申请号：US14557241

    申请日：2014-12-01

    Applicant: Amazon Technologies, Inc.

    Inventor： Steven Ramos Carneiro ,  Pavel Novoselov ,  Suki Sandhu

    IPC: G02B26/00 ,  G02B26/02 ,  H02N11/00

    CPC classification number: H02N11/002 ,  G02B26/005

    Abstract: Subject matter disclosed herein relates to arrangements and techniques that provide for harvesting thermal energy within a display, for example an electrowetting display, of an image display apparatus and converting the thermal energy into electricity. The electrowetting display comprises a first substrate and a second substrate opposite to the first substrate, a plurality of pixel portions defined between the first substrate and the second substrate, and a hydrophobic surface on the first substrate. A first fluid is included within the pixel portions and on the hydrophobic surface, while a second fluid is included on the first fluid, wherein the second fluid is substantially immiscible with the first fluid. A pyroelectric layer is included between the first substrate and the second substrate, wherein the pyroelectric layer is configured to absorb thermal energy within the electrowetting display and output a voltage based upon the thermal energy.

    Abstract translation: 本文公开的主题涉及提供用于在图像显示装置的显示器（例如电润湿显示器）内收集热能并将热能转换成电能的装置和技术。 电润湿显示器包括第一基板和与第一基板相对的第二基板，限定在第一基板和第二基板之间的多个像素部分和第一基板上的疏水表面。 第一流体包括在像素部分内和疏水表面上，而第二流体包括在第一流体中，其中第二流体与第一流体基本上不混溶。 热电层包括在第一基板和第二基板之间，其中热电层被配置为吸收电润湿显示器内的热能并输出基于热能的电压。

    Adaptive drive scheme for electrowetting displays
    8.
    发明授权
    Adaptive drive scheme for electrowetting displays 有权

    公开(公告)号：US10607522B1

    公开(公告)日：2020-03-31

    申请号：US14980636

    申请日：2015-12-28

    Applicant: Amazon Technologies, Inc.

    Inventor： Steven Ramos Carneiro ,  Pavel Novoselov

    IPC: G09G3/20 ,  G09G3/34

    Abstract: A display device includes a first substrate and a second substrate opposite to the first substrate. The display device includes a pixel region on the first substrate. The pixel region includes a plurality of input lines. Each input line is configured to apply an electric potential to a portion of a pixel in the pixel region. The display device includes a memory storing a drive scheme for the display device and a pixel control system. A solution to a cost function for the display device is calculated, such as by the pixel control system. The cost function expresses a performance attribute of the display device. The drive scheme is modified using the solution to the cost function to create a modified drive scheme, and a voltage is applied to one of the plurality of input lines according to the modified drive scheme to drive the display device.

    RESET DRIVE VOLTAGE TO ENHANCE GREY SCALE RESOLUTION FOR AN ELECTROWETTING DISPLAY DEVICE
    10.
    发明申请
    RESET DRIVE VOLTAGE TO ENHANCE GREY SCALE RESOLUTION FOR AN ELECTROWETTING DISPLAY DEVICE 有权
    重置驱动电压以增强电镀显示装置的灰度级分辨率

    公开(公告)号：US20170004779A1

    公开(公告)日：2017-01-05

    申请号：US14788528

    申请日：2015-06-30

    Applicant: Amazon Technologies, Inc.

    Inventor： Pavel Novoselov ,  Steven Ramos Carneiro ,  Henricus Petronella Maria Derckx ,  Tulasi Sridhar Reddy Guntaka

    IPC: G09G3/34 ,  G09G3/20 ,  G02B26/00

    CPC classification number: G09G3/348 ,  G02B26/005 ,  G02B2207/115 ,  G09G3/2007 ,  G09G2300/0809 ,  G09G2310/0262 ,  G09G2310/027 ,  G09G2310/061 ,  G09G2310/065 ,  G09G2320/02 ,  G09G2320/0223

    Abstract: An electrowetting display device may comprise pixels that include: a hydrophobic layer portion disposed on a first electrode, electrowetting fluids overlying the hydrophobic layer portion, and a thin film transistor (TFT) that is in electrical contact with the first electrode. The electrowetting display device also comprises a display control circuit in electrical contact with a drain or a source of the TFT of each of the pixels to provide a drive voltage to the drain or the source of the TFT of each of the pixels, and a reset control circuit in electrical contact with the drain or the source of the TFT of each of the pixels to provide a reset voltage pulse to the drain or the source of the TFT of each of the pixels. A magnitude of the reset voltage pulse may be based, at least in part, on the drive voltage.

    Abstract translation: 电润湿显示装置可以包括像素，其包括：布置在第一电极上的疏水层部分，覆盖疏水层部分的电润湿流体和与第一电极电接触的薄膜晶体管（TFT）。 电润湿显示装置还包括与每个像素的TFT的漏极或源极电接触的显示控制电路，以向每个像素的TFT的漏极或源极提供驱动电压，以及复位 控制电路与每个像素的TFT的漏极或源极电接触，以向每个像素的TFT的漏极或源极提供复位电压脉冲。 复位电压脉冲的大小至少部分地基于驱动电压。

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