公开(公告)号：US20180061311A1

公开(公告)日：2018-03-01

申请号：US15298085

申请日：2016-10-19

Applicant: Apple Inc.

Inventor： Chin-Wei Lin ,  Hung Sheng Lin ,  Vasudha Gupta ,  Shinya Ono ,  Tsung-Ting Tsai ,  Shyuan Yang

IPC: G09G3/32

CPC classification number: G09G3/32 ,  G09G3/3233 ,  G09G3/3291 ,  G09G2300/0842 ,  G09G2300/0861 ,  G09G2310/0251 ,  G09G2310/0297 ,  G09G2310/061 ,  G09G2320/0247 ,  G09G2330/021 ,  G09G2340/0435

Abstract: An electronic device comprises a display and a controller. The controller is configured to provide a first frequency refresh rate to the display. The controller is also configured to generate a control signal configured to control emission of a light emitting diode of a display pixel of the display at a second frequency based on whether the first frequency refresh rate of the display is less than a predetermined threshold value.

公开(公告)号：US20170263183A1

公开(公告)日：2017-09-14

申请号：US15234564

申请日：2016-08-11

Applicant: Apple Inc.

Inventor： Chin-Wei Lin ,  Shih Chang Chang ,  Vasudha Gupta

IPC: G09G3/3258

CPC classification number: G09G3/3233 ,  G09G2300/0861 ,  G09G2310/0251 ,  G09G2310/0262 ,  G09G2320/043

Abstract: A display may have an array of pixels. Display driver circuitry may supply data and control signals to the pixels. Each pixel may have seven transistors, a capacitor, and a light-emitting diode such as an organic light-emitting diode. The seven transistors may receive control signals over three control lines, may receive data over a data line, may receive a reference voltage from a reference voltage terminal, and may receive power from a pair of power supply terminals. The display driver circuitry may repeatedly operate each pixel in an initialization phase in which the drive transistor is preconditioned with on-bias stress, a data loading and threshold voltage sampling phase, and an emission phase.

公开(公告)号：US09640561B2

公开(公告)日：2017-05-02

申请号：US14954805

申请日：2015-11-30

Applicant: Apple Inc.

Inventor： Young Bae Park ,  Shih Chang Chang ,  Vasudha Gupta

IPC: H01L27/12 ,  H01L51/00 ,  H01L27/32

CPC classification number: H01L27/124 ,  H01L27/1218 ,  H01L27/1259 ,  H01L27/3276 ,  H01L51/0097 ,  H01L2251/5338 ,  Y02E10/549

Abstract: An electronic device may have a flexible display with portions that are bent along a bend axis. The display may have display circuitry such as an array of display pixels in an active area. Contact pads may be formed in an inactive area of the display. Signal lines may couple the display pixels to the contact pads. The signal lines may overlap the bend axis in the inactive area of the display. During fabrication, an etch stop may be formed on the display that overlaps the bend axis. The etch stop may prevent over etching of dielectric such as a buffer layer on a polymer flexible display substrate. A layer of polymer that serves as a neutral stress plane adjustment layer may be formed over the signal lines in the inactive area of the display. Upon bending, the neutral stress plane adjustment layer helps prevent stress in the signal lines.

公开(公告)号：US20170092196A1

公开(公告)日：2017-03-30

申请号：US15041836

申请日：2016-02-11

Applicant: Apple Inc.

Inventor： Vasudha Gupta ,  Chin-Wei Lin ,  Yafei Bi ,  Hung Shen Lin ,  Jean-Pierre Simon Guillou ,  Tsung-Ting Tsai ,  Sang Y. Youn

IPC: G09G3/3258 ,  G09G3/3233 ,  G09G3/3266

CPC classification number: G09G3/3258 ,  G09G3/3233 ,  G09G3/3266 ,  G09G2300/0809 ,  G09G2300/0842 ,  G09G2300/0861 ,  G09G2310/0251 ,  G09G2320/0247 ,  G09G2320/0252 ,  G09G2330/023 ,  G09G2340/0435

Abstract: An electronic device comprises a display and a controller. The controller is configured to determine a change in a refresh rate of the display from a first frequency to a second frequency. The controller is also configured to selectively generate a control signal configured to control emission of a light emitting diode of a display pixel of the display based on the first frequency.

公开(公告)号：US20160284276A1

公开(公告)日：2016-09-29

申请号：US14850111

申请日：2015-09-10

Applicant: Apple Inc.

Inventor： Vasudha Gupta ,  Chin-Wei Lin ,  Tsung-Ting Tsai

IPC: G09G3/32

CPC classification number: G09G3/3233 ,  G09G3/3208 ,  G09G3/3225 ,  G09G3/3266 ,  G09G2300/0819 ,  G09G2310/0262 ,  G09G2310/066 ,  G09G2310/067 ,  G09G2320/0233

Abstract: Display driver circuitry may load data into an array of pixels via data lines. The display driver circuitry may supply control signals including scan signals to the pixels via control lines. Each pixel may have transistors and capacitor circuitry for controlling the emission of light from a light-emitting diode. A drive transistor may be coupled in series with the light-emitting diode to control the amount of current flowing through the light-emitting diode. The drive transistor may have a drive transistor gate terminal that is coupled to one of the source-drain terminals of a switching transistor. The switching transistor may have a switching transistor gate terminal that receives the scan signal. When transitioning prior to an emission phase of operation, the scan signal may have a two-step transition profile or other shape that enhances display performance by reducing dynamic effects in the switching transistor.

Abstract translation: 显示驱动器电路可以通过数据线将数据加载到像素阵列中。 显示驱动器电路可以通过控制线向像素提供包括扫描信号的控制信号。 每个像素可以具有用于控制来自发光二极管的光的发射的晶体管和电容器电路。 驱动晶体管可以与发光二极管串联耦合以控制流过发光二极管的电流量。 驱动晶体管可以具有耦合到开关晶体管的源极 - 漏极端子之一的驱动晶体管栅极端子。 开关晶体管可以具有接收扫描信号的开关晶体管栅极端子。 当在运行的发射阶段之前转换时，扫描信号可以具有两步转换曲线或其他通过减小开关晶体管中的动态效应来增强显示性能的形状。

公开(公告)号：US20160063922A1

公开(公告)日：2016-03-03

申请号：US14490564

申请日：2014-09-18

Applicant: Apple Inc.

Inventor： Tsung-Ting Tsai ,  Vasudha Gupta ,  Chin-Wei Lin ,  Shih-Chang Chang ,  Young Bae Park

IPC: G09G3/32

CPC classification number: G09G3/3291 ,  G09G3/3233 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2300/0861 ,  G09G2310/0256 ,  G09G2310/0297 ,  G09G2310/061 ,  G09G2320/0252 ,  G09G2320/043 ,  G09G2320/045

Abstract: A display may have an array of organic light-emitting diode display pixels. Each display pixel may have a light-emitting diode that emits light under control of a drive transistor. Each display pixel may also have control transistors for compensation and programming operations. 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. The capacitor may have a first terminal coupled to the gate of the drive transistor and a second terminal coupled to the light-emitting diode. In one embodiment, two scan control signals and two emission control signals may be used for each row of display pixels. In another embodiment, a single scan control signal and a single emission control signal may be formed for each row of display pixels.

Abstract translation: 显示器可以具有有机发光二极管显示像素阵列。 每个显示像素可以具有在驱动晶体管的控制下发光的发光二极管。 每个显示像素还可以具有用于补偿和编程操作的控制晶体管。 每个显示像素可以具有六个薄膜晶体管和一个电容器。 六个晶体管中的一个可以用作驱动晶体管，并且可以使用剩余的五个晶体管和电容器进行补偿。 电容器可以具有耦合到驱动晶体管的栅极的第一端子和耦合到发光二极管的第二端子。 在一个实施例中，可以对每行显示像素使用两个扫描控制信号和两个发射控制信号。 在另一个实施例中，可以为每行显示像素形成单个扫描控制信号和单个发射控制信号。

公开(公告)号：US20160063921A1

公开(公告)日：2016-03-03

申请号：US14469513

申请日：2014-08-26

Applicant: Apple Inc.

Inventor： Tsung-Ting Tsai ,  Vasudha Gupta ,  Chin-Wei Lin ,  Shih-Chang Chang ,  Young Bae Park

IPC: G09G3/32

CPC classification number: G09G3/3233 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2300/0861 ,  G09G2310/0262 ,  G09G2310/0297 ,  G09G2320/045

Abstract: A display may have an array of organic light-emitting diode display pixels. Each display pixel may have a light-emitting diode that emits light under control of a drive transistor. Each display pixel may also have control transistors for compensation and programming operations. 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. The capacitor may have a first terminal coupled to the gate of the drive transistor and a second terminal coupled to the light-emitting diode. In one embodiment, two scan control signals and two emission control signals may be used for each row of display pixels. In another embodiment, a single scan control signal and a single emission control signal may be formed for each row of display pixels.

Abstract translation: 显示器可以具有有机发光二极管显示像素阵列。 每个显示像素可以具有在驱动晶体管的控制下发光的发光二极管。 每个显示像素还可以具有用于补偿和编程操作的控制晶体管。 每个显示像素可以具有六个薄膜晶体管和一个电容器。 六个晶体管中的一个可以用作驱动晶体管，并且可以使用剩余的五个晶体管和电容器进行补偿。 电容器可以具有耦合到驱动晶体管的栅极的第一端子和耦合到发光二极管的第二端子。 在一个实施例中，可以对每行显示像素使用两个扫描控制信号和两个发射控制信号。 在另一个实施例中，可以为每行显示像素形成单个扫描控制信号和单个发射控制信号。

公开(公告)号：US09123668B2

公开(公告)日：2015-09-01

申请号：US14312416

申请日：2014-06-23

Applicant: Apple Inc.

Inventor： Young Bae Park ,  Shih Chang Chang ,  Vasudha Gupta

IPC: H01L27/32

CPC classification number: H01L27/3213 ,  H01L27/322

Abstract: An electronic device may include a display having an array of organic light-emitting diode display pixels that produce light that forms an image. Color filter elements may be used to allow the display to present color images. Each display pixel may have a red subpixel, a blue subpixel, a green subpixel, and a white subpixel. To adjust the color coordinates of the white pixel and thereby ensure that the light from the white pixel has a desired white point, part of the white subpixel may be overlapped by an area of colored color filter material. The white subpixel may, for example have a rectangular white area within which a patch of blue color filter material may be provided to make the white light from the white subpixel more bluish than it would be without the patch of blue color filter material.

Abstract translation: 电子设备可以包括具有产生形成图像的光的有机发光二极管显示像素阵列的显示器。 可以使用滤色器元件来允许显示器呈现彩色图像。 每个显示像素可以具有红色子像素，蓝色子像素，绿色子像素和白色子像素。 为了调整白色像素的颜色坐标，从而确保来自白色像素的光具有期望的白色点，白色子像素的一部分可以与彩色滤色器材料的区域重叠。 例如，白色子像素可以具有矩形白色区域，在该区域内可以设置蓝色滤色片材料，以使来自白色子像素的白色光线比没有蓝色滤色器材料的斑块更蓝。

公开(公告)号：US20150206931A1

公开(公告)日：2015-07-23

申请号：US14488725

申请日：2014-09-17

Applicant: Apple Inc.

Inventor： Jae Won Choi ,  Jean-Pierre Guillou ,  Shih Chang Chang ,  Tsung-Ting Tsai ,  Vasudha Gupta ,  Young Bae Park

IPC: H01L27/32 ,  H01L29/786 ,  H01L23/522 ,  H01L51/56

CPC classification number: H01L27/3272 ,  H01L27/3262 ,  H01L29/78603 ,  H01L29/78606 ,  H01L29/78666 ,  H01L29/78675 ,  H01L29/7869 ,  H01L2924/0002 ,  H01L2924/00

Abstract: A display may have an array of organic light-emitting diode display pixels. Each display pixel may have a light-emitting diode that emits light under control of a drive transistor. Each display pixel may also have control transistors for compensating and programming operations. The array of display pixels may have rows and columns. Row lines may be used to apply row control signals to rows of the display pixels. Column lines (data lines) may be used to apply display data and other signals to respective columns of display pixels. A bottom conductive shielding structure may be formed below each drive transistor. The bottom conductive shielding structure may serve to shield the drive transistor from any electric field generated from the adjacent row and column lines. The bottom conductive shielding structure may be electrically floating or coupled to a power supply line.

Abstract translation: 显示器可以具有有机发光二极管显示像素阵列。 每个显示像素可以具有在驱动晶体管的控制下发光的发光二极管。 每个显示像素还可以具有用于补偿和编程操作的控制晶体管。 显示像素阵列可能有行和列。 行行可用于将行控制信号应用于显示像素的行。 列线（数据线）可用于将显示数据和其他信号应用于显示像素的相应列。 可以在每个驱动晶体管的下方形成底部导电屏蔽结构。 底部导电屏蔽结构可以用于屏蔽来自相邻行和列线产生的任何电场的驱动晶体管。 底部导电屏蔽结构可以电浮动或耦合到电源线。

公开(公告)号：US20150144892A1

公开(公告)日：2015-05-28

申请号：US14315202

申请日：2014-06-25

Applicant: Apple Inc.

Inventor： Shih Chang Chang ,  Vasudha Gupta ,  Young Bae Park

IPC: H01L27/32 ,  G09G3/32

CPC classification number: H01L27/3265 ,  G09G3/3233 ,  G09G2300/0426 ,  G09G2300/0819 ,  G09G2300/0852 ,  G09G2300/0861 ,  G09G2320/043 ,  H01L27/3262

Abstract: A display may have an array of organic light-emitting diode display pixels. Each display pixel may have a light-emitting diode that emits light under control of a thin-film drive transistor. Each display pixel may have thin-film transistors and capacitor structures that form a circuit for compensating the drive transistor for threshold voltage variations. The capacitor structures may be formed from interleaved stacked conductive plates. The conductive plates may be formed from layers of material that are used in forming the drive transistor and other thin-film transistors such as a semiconductor layer, a first metal layer, a second metal layer, a third metal layer, and interposed dielectric layers.

Abstract translation: 显示器可以具有有机发光二极管显示像素阵列。 每个显示像素可以具有在薄膜驱动晶体管的控制下发光的发光二极管。 每个显示像素可以具有薄膜晶体管和电容器结构，其形成用于补偿用于阈值电压变化的驱动晶体管的电路。 电容器结构可以由交错的堆叠导电板形成。 导电板可以由用于形成驱动晶体管的材料层和诸如半导体层，第一金属层，第二金属层，第三金属层和插入的电介质层的其它薄膜晶体管形成。