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    Thin Film Transistor with Increased Doping Regions
    51.
    发明申请
    Thin Film Transistor with Increased Doping Regions 审中-公开
    具有增加掺杂区域的薄膜晶体管

    公开(公告)号：US20140225117A1

    公开(公告)日：2014-08-14

    申请号：US14258945

    申请日：2014-04-22

    Applicant: Apple Inc.

    Inventor： Abbas Jamshidi Roudbari ,  Cheng-Ho Yu ,  Shih Chang Chang ,  Ting-Kuo Chang

    IPC: H01L29/786 ,  H01L27/12

    CPC classification number: H01L29/78675 ,  H01L27/1222 ,  H01L29/78624 ,  H01L29/78645 ,  H01L29/78696

    Abstract: A transistor that may be used in electronic displays to selectively activate one or more pixels. The transistor includes a metal layer, a silicon layer deposited on at least a portion of the metal layer, the silicon layer includes an extension portion that extends a distance past the metal layer, and at least three lightly doped regions positioned in the silicon layer. The at least three lightly doped regions have a lower concentration of doping atoms than other portions of the silicon layer forming the transistor.

    Abstract translation: 可用于电子显示器中以选择性地激活一个或多个像素的晶体管。 晶体管包括金属层，沉积在金属层的至少一部分上的硅层，硅层包括延伸距离金属层的延伸部分和位于硅层中的至少三个轻掺杂区域。 所述至少三个轻掺杂区域具有比形成晶体管的硅层的其它部分更低的掺杂原子浓度。

    Hydrogenation and Crystallization of Polycrystalline Silicon
    52.
    发明申请
    Hydrogenation and Crystallization of Polycrystalline Silicon 审中-公开
    多晶硅的氢化和结晶

    公开(公告)号：US20140070225A1

    公开(公告)日：2014-03-13

    申请号：US14020620

    申请日：2013-09-06

    Applicant: Apple Inc.

    Inventor： Cheng-Ho Yu ,  Marduke Yousefpor ,  Yu-Cheng Chen ,  Stephen S. Poon ,  Ting-Kuo Chang ,  Young Bae Park

    IPC: H01L29/786 ,  H01L29/66

    CPC classification number: H01L29/78675 ,  H01L27/1222 ,  H01L27/1248 ,  H01L27/127 ,  H01L29/66757

    Abstract: A TFT stack for a liquid crystal display is provided. The TFT stack includes a silicon layer that includes a heavily doped region, a non-doped region, and a lightly doped region between the heavily doped region and the non-doped region. The heavily doped region is hydrogenated. The TFT stack also includes an insulation layer that includes a first portion formed over the lightly doped region and a second portion disposed over the non-doped region and a gate metal electrode layer formed over the second portion of the non-doped region. The TFT stack also includes a first dielectric layer disposed over the gate metal electrode and over the first portion of the insulation layer. The heavily doped region is hydrogenated to reduce the dependence of the capacitance between the gate metal electrode and the conductive layer Cgd upon a bias voltage being applied between the gate metal electrode and the conductive layer.

    Abstract translation: 提供了一种用于液晶显示器的TFT堆叠。 TFT堆叠包括硅层，其包括重掺杂区域，非掺杂区域和重掺杂区域和非掺杂区域之间的轻掺杂区域。 重掺杂区被氢化。 TFT堆叠还包括绝缘层，其包括形成在轻掺杂区域上的第一部分和设置在非掺杂区域上的第二部分，以及形成在非掺杂区域的第二部分上的栅极金属电极层。 TFT堆叠还包括设置在栅极金属电极上方并在绝缘层的第一部分之上的第一介电层。 氢化重掺杂区域，以便在施加在栅极金属电极和导电层之间的偏置电压时，减小栅极金属电极和导电层Cgd之间的电容的依赖性。

    Methods and configurations for improving the performance of sensors under a display
    55.
    发明授权
    Methods and configurations for improving the performance of sensors under a display 有权

    公开(公告)号：US11495176B1

    公开(公告)日：2022-11-08

    申请号：US17203356

    申请日：2021-03-16

    Applicant: Apple Inc.

    Inventor： Cheng-Chih Hsieh ,  Abbas Jamshidi Roudbari ,  Shih Chang Chang ,  Shyuan Yang ,  Ting-Kuo Chang ,  Tsung-Ting Tsai ,  Warren S. Rieutort-Louis

    IPC: G09G3/3266 ,  G09G3/3233

    Abstract: An electronic device may include a display and a sensor under the display. The display may include pixels having emission transistors that are controlled by emission signals. The emission signals are controlled using a pulse width modulation (PWM) scheme to control the brightness of the display. The emission signals may further include a localized sensor blackout pulse configured to generate a localized sensor blackout region that overlaps with the sensor to reduce any undesired back emission of light emitted from the display. The sensor blackout pulse may be automatically generated periodically or generated in an on-demand basis once per frame, multiple times per frame time, or once every multiple frames. Any luminance degradation caused by the sensor blackout pulse may be compensated by boosting the luminance and/or by extending the duration of each emission on pulse.

    Methods and apparatus for accelerating scan signal fall time to reduce display border width
    56.
    发明授权
    Methods and apparatus for accelerating scan signal fall time to reduce display border width 有权

    公开(公告)号：US11348533B1

    公开(公告)日：2022-05-31

    申请号：US16864241

    申请日：2020-05-01

    Applicant: Apple Inc.

    Inventor： Shinya Ono ,  Chin-Wei Lin ,  Gihoon Choo ,  Shiping Shen ,  Jie Won Ryu ,  Zino Lee ,  Hassan Edrees ,  Ting-Kuo Chang

    IPC: G09G3/3266

    Abstract: A display may include an array of pixels, where each pixel in the array includes an organic light-emitting diode coupled to associated thin-film transistors. The thin-film transistors may be controlled using at least first and second horizontal scan line signals. Loading different data values into any given row in the array may cause the scan line signals to exhibit varying rise/fall times, which results in horizontal crosstalk and luminance non-uniformity across the display. The rise and fall times of the second scan line signal are crucial, so the second scan line signal is driven by two separate scan line drivers formed on both sides of the display. Only the fall time of the first scan line signal is crucial, so the first scan line signal is driven by only one peripheral scan line driver and is coupled to an auxiliary pull-down circuit that is only activated during the pull-down transition.

    Electronic devices with low refresh rate display pixels
    57.
    发明授权
    Electronic devices with low refresh rate display pixels 有权

    公开(公告)号：US11257426B2

    公开(公告)日：2022-02-22

    申请号：US17080685

    申请日：2020-10-26

    Applicant: Apple Inc.

    Inventor： Chin-Wei Lin ,  Shyuan Yang ,  Chuang Qian ,  Abbas Jamshidi Roudbari ,  Ting-Kuo Chang

    IPC: G06F3/00 ,  G09G3/3225 ,  G09G3/3233

    Abstract: A display may have an array of organic light-emitting diode display pixels operating at a low refresh rate. Each display pixel may have six thin-film transistors and one capacitor. One of the six transistors may serve as the drive transistor and may be compensated using the remaining five transistors and the capacitor. One or more on-bias stress operations may be applied before threshold voltage sampling to mitigate first frame dimming. Multiple anode reset and on-bias stress operations may be inserted during vertical blanking periods to reduce flicker and maintain balance and may also be inserted between successive data refreshes to improve first frame performance. Two different emission signals controlling each pixel may be toggled together using a pulse width modulation scheme to help provide darker black levels.

    High frame rate display
    59.
    发明授权
    High frame rate display 有权

    公开(公告)号：US10984727B2

    公开(公告)日：2021-04-20

    申请号：US16120076

    申请日：2018-08-31

    Applicant: Apple Inc.

    Inventor： Ting-Kuo Chang ,  Abbas Jamshidi Roudbari ,  Tsung-Ting Tsai ,  Warren S. Rieutort-Louis ,  Shinya Ono ,  Shin-Hung Yeh ,  Chien-Ya Lee ,  Shyuan Yang

    IPC: G09G3/3275 ,  G09G3/3233 ,  G09G3/3266 ,  G09G3/20

    Abstract: A display may have rows and columns of pixels. Gate lines may be used to supply gate signals to rows of the pixels. Data lines may be used to supply data signals to columns of the pixels. The data lines may include alternating even and odd data lines. Data lines may be organized in pairs each of which includes one of the odd data lines and an adjacent one of the even data lines. Demultiplexer circuitry may be configured dynamically during data loading and pixel sensing operations. During data loading, data from display driver circuitry may be supplied, alternately to odd pairs of the data lines and even pairs of the data lines. During sensing, the demultiplexer circuitry may couple a pair of the even data lines to sensing circuitry in the display driver circuitry and then may couple a pair of the odd data lines to the sensing circuitry.

    Displays with multiple scanning modes
    60.
    发明授权
    Displays with multiple scanning modes 有权

    公开(公告)号：US10971074B2

    公开(公告)日：2021-04-06

    申请号：US16712050

    申请日：2019-12-12

    Applicant: Apple Inc.

    Inventor： Keitaro Yamashita ,  Abbas Jamshidi Roudbari ,  Shin-Hung Yeh ,  Tsung-Ting Tsai ,  Shih-Chang Chang ,  Ting-Kuo Chang ,  Ki Yeol Byun ,  Warren S. Rieutort-Louis

    IPC: G09G3/3266

    Abstract: An electronic device may include a display such as a light-emitting diode display. The electronic device may be a head-mounted device that provides a virtual reality or augmented reality environment to a user. To reduce artifacts in the display, a display may be operable in both a normal scanning mode and a partial scanning mode. In the normal scanning mode, every row of the display may be enabled to emit light in each frame. In the partial scanning mode, only a subset of the rows of the display may be enabled to emit light in each frame. The display may have a higher refresh rate in the partial scanning mode than in the normal scanning mode. To ensure uniform transistor stress across the display, the scanning driver for the display may scan the disabled rows in the partial scanning mode even though the rows will not be used to emit light.

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