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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.

    Light steering structures for electrowetting displays
    2.
    发明授权
    Light steering structures for electrowetting displays 有权

    公开(公告)号：US10234677B1

    公开(公告)日：2019-03-19

    申请号：US15084642

    申请日：2016-03-30

    Applicant: Amazon Technologies, Inc.

    Inventor： Tulasi Sridhar Reddy Guntaka ,  Karel Johannes Gerhardus Hinnen

    IPC: G02B26/00 ,  G02B26/08 ,  G02F1/29 ,  G02B5/00

    Abstract: An electrowetting display device includes light steering structures that direct incoming light away from pixel walls. According to some configurations, transparent or semi-transparent pixel walls are shielded from incoming light by a black matrix (BM) material in a color filter plate and by the light steering structures. Instead of the incoming light being completely blocked by the black matrix, at least a portion of the incoming light that would have been blocked by the black matrix is directed by one or more of the light steering structures to an area of the pixel such that the brightness of the pixel is increased.

    Electrowetting display light diffuser
    5.
    发明授权
    Electrowetting display light diffuser 有权

    公开(公告)号：US09977233B1

    公开(公告)日：2018-05-22

    申请号：US14501689

    申请日：2014-09-30

    Applicant: Amazon Technologies, Inc.

    Inventor： Toru Sakai ,  Tulasi Sridhar Reddy Guntaka

    IPC: G02B26/00

    CPC classification number: G02B26/005

    Abstract: An electrowetting display comprises a first support plate, a second support plate substantially parallel to the first support plate, an electrolyte solution disposed between the first support plate and the second support plate, and a plurality of transparent diffuser elements protruding into the electrolyte solution from non-contiguous areas of the second support plate. Recesses separate the transparent diffuser elements.

    Reflectance in electrowetting displays
    6.
    发明授权
    Reflectance in electrowetting displays 有权
    电泳显示器的反射率

    公开(公告)号：US09529189B1

    公开(公告)日：2016-12-27

    申请号：US14870449

    申请日：2015-09-30

    Applicant: Amazon Technologies, Inc.

    Inventor： Erno Hermanus Antonius Langendijk ,  Christian Etienne Hendriks ,  Tulasi Sridhar Reddy Guntaka ,  Steven Ramos Carneiro ,  Pavel Novoselov

    IPC: G02B26/00

    CPC classification number: G02B26/005 ,  G02B5/201

    Abstract: Subject matter disclosed herein relates to improving luminance and reducing color shifts in electrowetting displays. The electrowetting display comprises a plurality of electrowetting elements separated by partition walls and spacers. The spacers and/or partition walls are reflective. When incident light that enters a pixel or subpixel is reflected and encounters a spacer and/or partition wall, the light is reflected such that the reflected light exits the pixel or subpixel into which the incident light entered. This improves luminance and reduces color shifts of the electrowetting display.

    Abstract translation: 本文公开的主题涉及改善电润湿显示器的亮度和减少颜色偏移。 电润湿显示器包括由分隔壁和间隔物隔开的多个电润湿元件。 间隔物和/或分隔壁是反射性的。 当进入像素或子像素的入射光被反射并遇到间隔物和/或分隔壁时，光被反射，使得反射光离开入射光入射的像素或子像素。 这提高了电泳显示器的亮度并减少了颜色偏移。

    Pixel wall and spacer configuration for an electrowetting display
    7.
    发明授权
    Pixel wall and spacer configuration for an electrowetting display 有权
    电泳显示器的像素壁和间隔件配置

    公开(公告)号：US09348132B1

    公开(公告)日：2016-05-24

    申请号：US14559831

    申请日：2014-12-03

    Applicant: Amazon Technologies, Inc.

    Inventor： Pavel Novoselov ,  Gor Manukyan ,  Tulasi Sridhar Reddy Guntaka

    IPC: G02B26/00 ,  G02B26/02 ,  G09G3/34

    CPC classification number: G02B26/005 ,  B01L2400/0427 ,  G02B26/004 ,  G02B26/02 ,  G09G3/34 ,  G09G3/348 ,  G09G2300/04

    Abstract: A method for fabricating an electrowetting display may include forming pixel electrodes on a support plate; depositing a first layer on the pixel electrodes; etching portions of the first layer to form pixel walls that partition pixel regions; depositing a second layer on the pixel electrodes and the pixel walls; etching portions of the second layer to form spacers on tops of the pixel walls; and depositing a hydrophobic layer to at least partially cover the pixel electrodes.

    Abstract translation: 电润湿显示器的制造方法可以包括在支撑板上形成像素电极; 在所述像素电极上沉积第一层; 蚀刻第一层的部分以形成分隔像素区域的像素壁; 在像素电极和像素壁上沉积第二层; 蚀刻第二层的部分以在像素壁的顶部上形成间隔物; 以及沉积疏水层以至少部分地覆盖像素电极。

    Pixel design for reduced light leakage
    9.
    发明授权
    Pixel design for reduced light leakage 有权

    公开(公告)号：US10274720B1

    公开(公告)日：2019-04-30

    申请号：US15259546

    申请日：2016-09-08

    Applicant: AMAZON TECHNOLOGIES, INC.

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

    IPC: G02B26/00 ,  G09G3/34 ,  G02B5/00

    Abstract: A display device includes a first support plate and an opposing second support plate. A first pixel region between the first support plate and the second support plate includes a first thin film transistor (TFT) structure over the first support plate. A second pixel region between the first support plate and the second support plate and adjacent the first pixel region includes a second TFT structure over the first support plate. A first pixel wall portion is positioned over the first support plate between the first pixel region and the second pixel region such that each of the first TFT structure and the second TFT structure is positioned adjacent the first pixel wall portion. A light-blocking portion is disposed on an inner surface of the second support plate and positioned over the first TFT structure and the second TFT structure.

    Electrowetting display device with ambient light detection
    10.
    发明授权
    Electrowetting display device with ambient light detection 有权

    公开(公告)号：US10262601B1

    公开(公告)日：2019-04-16

    申请号：US14752478

    申请日：2015-06-26

    Applicant: Amazon Technologies, Inc.

    Inventor： Tulasi Sridhar Reddy Guntaka ,  Pavel Novoselov ,  Gor Manukyan

    IPC: G09G3/34 ,  G02B26/00

    Abstract: An electrowetting display device includes a first support plate and a second support plate. The first support plate has rows and columns of pixel walls defining individual electrowetting pixels. A first fluid and a second fluid immiscible with the first fluid are between the first support plate and the second support plate. A sensor is coupled to the second support plate and configured to detect a first intensity of light incident upon the second support plate at a first angle. A controller is configured to displace the first fluid in either a first direction or a second direction based at least in part upon the first intensity of light detected by the sensor.

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