公开(公告)号：US10115339B2

公开(公告)日：2018-10-30

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 ,  G09G3/3233 ,  G09G3/3208 ,  G09G3/3225 ,  G09G3/3266

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.

公开(公告)号：US10032841B2

公开(公告)日：2018-07-24

申请号：US15351266

申请日：2016-11-14

Applicant: Apple Inc.

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

IPC: H01L27/32 ,  H01L29/786 ,  H01L51/00 ,  H01L27/12

CPC classification number: H01L27/3262 ,  H01L27/1225 ,  H01L27/1251 ,  H01L27/1255 ,  H01L27/3258 ,  H01L27/3265 ,  H01L27/3276 ,  H01L29/78651 ,  H01L29/78672 ,  H01L29/7869 ,  H01L51/0097 ,  H01L2251/5338 ,  Y02E10/549

Abstract: An electronic device display may have an array of pixel circuits. Each pixel circuit may include an organic light-emitting diode and a drive transistor. Each drive transistor may be adjusted to control how much current flows through the organic light-emitting diode. Each pixel circuit may include one or more additional transistors such as switching transistors and a storage capacitor. Semiconducting oxide transistors and silicon transistors may be used in forming the transistors of the pixel circuits. The storage capacitors and the transistors may be formed using metal layers, semiconductor structures, and dielectric layers. Some of the layers may be removed along the edge of the display to facilitate bending. The dielectric layers may have a stepped profile that allows data lines in the array to be stepped down towards the surface of the substrate as the data lines extend into an inactive edge region.

公开(公告)号：US20180033805A1

公开(公告)日：2018-02-01

申请号：US15727475

申请日：2017-10-06

Applicant: Apple Inc.

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

IPC: H01L27/12 ,  H01L27/32 ,  G02F1/1362 ,  G02F1/1368 ,  G02F1/1345

CPC classification number: H01L27/1225 ,  G02F1/13452 ,  G02F1/13454 ,  G02F1/13624 ,  G02F1/1368 ,  G02F2001/13685 ,  G02F2202/104 ,  H01L27/1222 ,  H01L27/1251 ,  H01L27/1255 ,  H01L27/3262 ,  H01L27/3272 ,  H01L29/7869

Abstract: An electronic device may include a display having an array of display pixels on a substrate. The display pixels may be organic light-emitting diode display pixels or display pixels in a liquid crystal display. In an organic light-emitting diode display, hybrid thin-film transistor structures may be formed that include semiconducting oxide thin-film transistors, silicon thin-film transistors, and capacitor structures. The capacitor structures may overlap the semiconducting oxide thin-film transistors. Organic light-emitting diode display pixels may have combinations of oxide and silicon transistors. In a liquid crystal display, display driver circuitry may include silicon thin-film transistor circuitry and display pixels may be based on oxide thin-film transistors. A single layer or two different layers of gate metal may be used in forming silicon transistor gates and oxide transistor gates. A silicon transistor may have a gate that overlaps a floating gate structure.

公开(公告)号：US09601517B2

公开(公告)日：2017-03-21

申请号：US14504261

申请日：2014-10-01

Applicant: Apple Inc.

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

IPC: H01L27/12 ,  H01L27/32 ,  H01L27/15 ,  G09G3/32

CPC classification number: H01L27/1225 ,  G09G3/32 ,  G09G2300/0426 ,  G09G2300/0842 ,  G09G2300/0861 ,  H01L27/1222 ,  H01L27/124 ,  H01L27/156 ,  H01L27/3255

Abstract: An electronic device may include a display. The display may be formed by an array of light-emitting diodes mounted to the surface of a substrate. The light-emitting diodes may be inorganic light-emitting diodes formed from separate crystalline semiconductor structures. An array of pixel control circuits may be used to control light emission from the light-emitting diodes. Each pixel control circuit may be used to supply drive signals to a respective set of the light-emitting diodes. The pixel control circuits may each have a silicon integrated circuit that includes transistors such as emission enable transistors and drive transistors for supplying the drive signals and may each have thin-film semiconducting oxide transistors that are coupled to the integrated circuit and that serve as switching transistors.

公开(公告)号：US20170053599A1

公开(公告)日：2017-02-23

申请号：US14975389

申请日：2015-12-18

Applicant: Apple Inc.

Inventor： Chin-Wei Lin ,  Vasudha Gupta ,  Yafei Bi

IPC: G09G3/3283 ,  G09G3/3258 ,  G09G3/20 ,  G09G3/3266

CPC classification number: G09G3/3283 ,  G09G3/2048 ,  G09G3/3225 ,  G09G3/3233 ,  G09G3/3258 ,  G09G3/3266 ,  G09G3/3275 ,  G09G3/3291 ,  G09G3/3614 ,  G09G3/3688 ,  G09G2300/0819 ,  G09G2300/0876 ,  G09G2310/0254 ,  G09G2310/0291 ,  G09G2320/0204 ,  G09G2320/0233 ,  G09G2320/0247 ,  H03F2200/375

Abstract: Systems and method for improving display quality of an electronic display. In one embodiment the electronic display includes a first display pixel that facilitates displaying a first image frame using first amplified image data and facilitates displaying a second image frame using second amplified image data; a second display pixel that facilitates displaying the first image frame using third amplified image data; a first amplifier that operates in a first operational mode to generate the first amplified image data based on image data corresponding with the first image frame and operates in a second operational mode to generate the second amplified image data based on image data corresponding with the second image frame; and a second amplifier that operates in the second operational mode to generate the third amplified image data based on the image data corresponding with the first image frame.

Abstract translation: 用于提高电子显示器的显示质量的系统和方法。 在一个实施例中，电子显示器包括第一显示像素，其便于使用第一放大图像数据显示第一图像帧，并且有助于使用第二放大图像数据显示第二图像帧; 使用第三放大图像数据便于显示第一图像帧的第二显示像素; 第一放大器，其以第一操作模式操作，以基于与第一图像帧相对应的图像数据生成第一放大图像数据，并且以第二操作模式操作，以基于与第二图像对应的图像数据生成第二放大图像数据 帧; 以及第二放大器，其以第二操作模式操作，以基于与第一图像帧对应的图像数据生成第三放大图像数据。

公开(公告)号：US20160141348A1

公开(公告)日：2016-05-19

申请号：US14543088

申请日：2014-11-17

Applicant: Apple Inc.

Inventor： Chin-Wei Lin ,  Jae Won Choi ,  MinKyu Kim ,  Shih Chang Chang ,  Tsung-Ting Tsai ,  Vasudha Gupta ,  Young Bae Park

IPC: H01L27/32

CPC classification number: H01L27/3265 ,  H01L27/3248 ,  H01L27/3258 ,  H01L27/3262 ,  H01L27/3272 ,  H01L27/3276

Abstract: An organic light-emitting diode display may have an array of pixels. Each pixel may have an organic light-emitting diode with an anode and cathode. The anodes may be formed from a patterned layer of metal. Thin-film transistor circuitry in the pixels may include transistors such as drive transistors and switching transistors. Data lines may supply data signals to the pixels and horizontal control lines may supply control signals to the gates of the transistors. A switching transistor may be coupled between a voltage initialization line and each anode. The voltage initialization lines and capacitor structures in the thin-film transistor circuitry may be formed using a layer of metal that is different than the layer of metal that forms the anodes.

Abstract translation: 有机发光二极管显示器可以具有像素阵列。 每个像素可以具有带阳极和阴极的有机发光二极管。 阳极可以由图案化的金属层形成。 像素中的薄膜晶体管电路可以包括诸如驱动晶体管和开关晶体管的晶体管。 数据线可以向像素提供数据信号，并且水平控制线可以向晶体管的栅极提供控制信号。 开关晶体管可以耦合在电压初始化线和每个阳极之间。 可以使用与形成阳极的金属层不同的金属层来形成薄膜晶体管电路中的电压初始化线和电容器结构。

公开(公告)号：US20160133184A1

公开(公告)日：2016-05-12

申请号：US14535604

申请日：2014-11-07

Applicant: Apple Inc.

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

IPC: G09G3/32

CPC classification number: G09G3/3233 ,  G09G3/2011 ,  G09G3/2014 ,  G09G3/2081 ,  G09G3/3225 ,  G09G3/3266 ,  G09G2310/0286 ,  G09G2310/08 ,  G09G2320/0233 ,  G09G2330/028 ,  G09G2360/16 ,  G11C19/184 ,  G11C19/28 ,  H03K5/15093

Abstract: An organic light-emitting diode display may have an array of pixel circuits. Each pixel circuit may contain an organic light-emitting diode that emits light, a drive transistor that controls current flow through the diode, and additional transistors such as switching transistors for loading data into the pixel circuit and emission transistors for enabling and disabling current flow through the drive transistor and diode. Gate driver circuitry may produce emission control signals that control the emission transistors. Display driver circuitry may generate a start signal with a digitally controlled pulse width. The start signal may be applied to shift register circuitry in the gate driver circuitry. The pulse width of the start signal may be adjusted to adjust the luminance of the display.

Abstract translation: 有机发光二极管显示器可以具有像素电路阵列。 每个像素电路可以包含发射光的有机发光二极管，控制通过二极管的电流的驱动晶体管，以及诸如用于将数据加载到像素电路中的开关晶体管和用于启用和禁用电流流过的发射晶体管的附加晶体管 驱动晶体管和二极管。 栅极驱动器电路可以产生控制发射晶体管的发射控制信号。 显示驱动器电路可以产生具有数字控制脉冲宽度的起始信号。 启动信号可以被施加到栅极驱动器电路中的移位寄存器电路。 可以调节起始信号的脉冲宽度以调节显示器的亮度。

公开(公告)号：US20160087022A1

公开(公告)日：2016-03-24

申请号：US14494931

申请日：2014-09-24

Applicant: Apple Inc.

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

IPC: H01L27/32 ,  H01L29/786

CPC classification number: H01L27/3262 ,  H01L27/1225 ,  H01L27/3258 ,  H01L27/3265 ,  H01L27/3276 ,  H01L29/78651 ,  H01L29/78672 ,  H01L29/7869 ,  H01L51/0097 ,  H01L2251/5338 ,  Y02E10/549

Abstract: An electronic device display may have an array of pixel circuits. Each pixel circuit may include an organic light-emitting diode and a drive transistor. Each drive transistor may be adjusted to control how much current flows through the organic light-emitting diode. Each pixel circuit may include one or more additional transistors such as switching transistors and a storage capacitor. Semiconducting oxide transistors and silicon transistors may be used in forming the transistors of the pixel circuits. The storage capacitors and the transistors may be formed using metal layers, semiconductor structures. and dielectric layers. Some of the layers may be removed along the edge of the display to facilitate bending. The dielectric layers may have a stepped profile that allows data lines in the array to be stepped down towards the surface of the substrate as the data lines extend into an inactive edge region.

Abstract translation: 电子设备显示器可以具有像素电路阵列。 每个像素电路可以包括有机发光二极管和驱动晶体管。 可以调节每个驱动晶体管以控制流过有机发光二极管的电流量。 每个像素电路可以包括一个或多个附加晶体管，例如开关晶体管和存储电容器。 半导体氧化物晶体管和硅晶体管可以用于形成像素电路的晶体管。 存储电容器和晶体管可以使用金属层，半导体结构形成。 和电介质层。 一些层可以沿着显示器的边缘去除以便于弯曲。 电介质层可以具有阶梯形轮廓，当数据线延伸到无源边缘区域时，允许阵列中的数据线朝着衬底的表面逐步降低。

公开(公告)号：US09209207B2

公开(公告)日：2015-12-08

申请号：US14199871

申请日：2014-03-06

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.

Abstract translation: 电子设备可以具有柔性显示器，其具有沿着弯曲轴线弯曲的部分。 显示器可以具有诸如有源区域中的显示像素阵列的显示电路。 接触焊盘可以形成在显示器的无效区域中。 信号线可将显示像素耦合到接触垫。 信号线可能与显示器的非活动区域中的弯曲轴重叠。 在制造期间，可以在显示器上形成与弯曲轴线重叠的蚀刻停止。 蚀刻停止可以防止在聚合物柔性显示基板上的诸如缓冲层之类的电介质的过度蚀刻。 用作中性应力平面调整层的聚合物层可以形成在显示器的无效区域中的信号线上。 弯曲时，中性应力平面调整层有助于防止信号线中的应力。

公开(公告)号：US09129927B2

公开(公告)日：2015-09-08

申请号：US14229232

申请日：2014-03-28

Applicant: Apple Inc.

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

IPC: H01L35/24 ,  H01L27/32 ,  H01L27/12 ,  G09G3/36 ,  G02F1/1368

CPC classification number: H01L27/3262 ,  G02F1/13454 ,  G02F1/13624 ,  G02F1/1368 ,  G02F2001/13685 ,  G02F2202/104 ,  G09G3/3225 ,  G09G3/3611 ,  G09G3/3677 ,  G09G2320/043 ,  H01L27/1222 ,  H01L27/1225 ,  H01L27/1251 ,  H01L27/1255

Abstract: An electronic device may include a display having an array of display pixels on a substrate. The display pixels may be organic light-emitting diode display pixels or display pixels in a liquid crystal display. In an organic light-emitting diode display, hybrid thin-film transistor structures may be formed that include semiconducting oxide thin-film transistors, silicon thin-film transistors, and capacitor structures. The capacitor structures may overlap the semiconducting oxide thin-film transistors. Organic light-emitting diode display pixels may have combinations of oxide and silicon transistors. In a liquid crystal display, display driver circuitry may include silicon thin-film transistor circuitry and display pixels may be based on oxide thin-film transistors. A single layer or two different layers of gate metal may be used in forming silicon transistor gates and oxide transistor gates. A silicon transistor may have a gate that overlaps a floating gate structure.

Abstract translation: 电子设备可以包括在基板上具有显示像素阵列的显示器。 显示像素可以是液晶显示器中的有机发光二极管显示像素或显示像素。 在有机发光二极管显示器中，可以形成包括半导体氧化物薄膜晶体管，硅薄膜晶体管和电容器结构的混合薄膜晶体管结构。 电容器结构可以与半导体氧化物薄膜晶体管重叠。 有机发光二极管显示像素可以具有氧化物和硅晶体管的组合。 在液晶显示器中，显示驱动器电路可以包括硅薄膜晶体管电路，显示像素可以基于氧化物薄膜晶体管。 可以在形成硅晶体管栅极和氧化物晶体管栅极中使用单层或两层不同的栅极金属层。 硅晶体管可以具有与浮动栅极结构重叠的栅极。