公开(公告)号：US09721502B2

公开(公告)日：2017-08-01

申请号：US14500738

申请日：2014-09-29

Applicant: Apple Inc.

Inventor： Yafei Bi ,  Wei H. Yao

IPC: G09G3/32 ,  G09G3/3233

CPC classification number: G09G3/3233 ,  G09G2320/0285 ,  G09G2320/0295 ,  G09G2320/043

Abstract: A display may include an array of organic light-emitting diode display pixels having transistors characterized by threshold voltages subject to transistor variations. Compensation circuitry may be used to measure at transistor threshold voltage for a pixel. The threshold voltage may be sampled by controlling the pixel to sample the threshold voltage onto a capacitor at the pixel. The compensation circuitry may include sense circuitry that may be operated in combination with the pixel to transfer charge from the capacitor to the sense circuitry such that the threshold voltage is produced at an output of the sense circuitry. The compensation circuitry may generate compensation data based on the measured threshold voltage. During display operations, data circuitry may receive digital image data and process the digital image data along with the compensation data to generate analog data signals for the pixel.

公开(公告)号：US20170103702A1

公开(公告)日：2017-04-13

申请号：US15273444

申请日：2016-09-22

Applicant: Apple Inc.

Inventor： Yafei Bi ,  Xiaofeng Wang ,  Haifeng Li ,  Mohammad B. Vahid Far ,  Hopil Bae ,  Hung Shen Lin ,  Hyunwoo Nho ,  Wei H. Yao

IPC: G09G3/3233 ,  G09G3/3291 ,  G09G3/3266

Abstract: An electronic device includes a display panel with pixels arranged in at least one row and at least one column. The electronic device also includes a sensing channel coupled to the at least one column. The sensing channel indirectly calculates a threshold voltage of the plurality of pixels based on an application of a first current level and a second current level to a data line of a first column of the at least one column of the pixels.

公开(公告)号：US09396684B2

公开(公告)日：2016-07-19

申请号：US14329197

申请日：2014-07-11

Applicant: Apple Inc.

Inventor： Yafei Bi ,  Wei H. Yao

IPC: G09G3/32

CPC classification number: G09G3/3258 ,  G09G3/3233 ,  G09G3/3275 ,  G09G2300/0828 ,  G09G2300/0861 ,  G09G2310/027 ,  G09G2320/029 ,  G09G2320/0295 ,  G09G2320/043 ,  G09G2320/0606 ,  G09G2320/0626 ,  G09G2320/0673 ,  G09G2320/0693 ,  G09G2330/021 ,  G09G2330/12 ,  G09G2354/00 ,  G09G2360/144 ,  G09G2360/16

Abstract: A display may have an array of display pixels to display images. Digital display data may be received by a digital-to-analog converter. The digital-to-analog converter can convert the digital display data to analog display data for the display pixels. The magnitudes of the analog display data signals that the digital-to-analog converter provides to the display pixels can be controlled by a control signal such as a reference voltage received by the digital-to-analog converter. A brightness controller may have multiple peak luminance control profiles. A brightness setting may be processed by a look-up table to produce information identifying a selected one of the peak luminance control profiles. The brightness controller may use the selected peak luminance control profile and average frame luminance for the digital display data to produce the reference voltage that controls the digital-to-analog controller.

Abstract translation: 显示器可以具有显示图像的显示像素阵列。 数字显示数据可以由数模转换器接收。 数模转换器可将数字显示数据转换为显示像素的模拟显示数据。 数模转换器提供给显示像素的模拟显示数据信号的幅度可以通过诸如由数模转换器接收的参考电压的控制信号来控制。 亮度控制器可以具有多个峰值亮度控制简档。 亮度设置可以由查找表处理，以产生标识所选择的一个峰值亮度控制简档的信息。 亮度控制器可以使用所选择的峰值亮度控制曲线和数字显示数据的平均帧亮度来产生控制数模转换器的参考电压。

公开(公告)号：US20160203777A1

公开(公告)日：2016-07-14

申请号：US14993702

申请日：2016-01-12

Applicant: Apple Inc.

Inventor： Kingsuk Brahma ,  David A. Stronks ,  Hopil Bae ,  Wei H. Yao

IPC: G09G3/36

CPC classification number: G01R27/205 ,  G09G3/006 ,  G09G3/2092 ,  G09G3/2096 ,  G09G3/3607 ,  G09G3/3696 ,  G09G2300/0426 ,  G09G2310/08 ,  G09G2320/0223

Abstract: A display may have a substrate layer to which a display driver integrated circuit and flexible printed circuit are bonded. The display driver integrated circuit may be provided with switches and control circuitry for controlling the operation of the switches during bond resistance measurements. Test equipment may apply currents to pads in the display driver integrated circuit through contacts in the flexible printed circuit while controlling the switching circuitry. Based on these measurements and the measurement of trace resistances in a dummy flexible printed circuit, the test equipment may determine bond resistances for bonds between the display driver integrated circuit and the display substrate and between the flexible printed circuit and the display substrate. Displays may have master and slave display driver integrated circuits that share coarse reference voltages produced by the master from raw power supply voltages.

Abstract translation: 显示器可以具有显示驱动器集成电路和柔性印刷电路结合到其上的基板层。 显示驱动器集成电路可以设置有用于在接合电阻测量期间控制开关的操作的开关和控制电路。 测试设备可以通过柔性印刷电路中的触点在显示驱动器集成电路中的焊盘上施加电流，同时控制开关电路。 基于这些测量和虚拟柔性印刷电路中的迹线电阻的测量，测试设备可以确定显示驱动器集成电路和显示器基板之间以及柔性印刷电路和显示器基板之间的结合的结合电阻。 显示器可以具有主从显示驱动器集成电路，其从原始电源电压共享由主机产生的粗参考电压。

公开(公告)号：US20150332638A1

公开(公告)日：2015-11-19

申请号：US14276146

申请日：2014-05-13

Applicant: APPLE INC.

Inventor： Yingxuan Li ,  Weijun Yao ,  Wei H. Yao ,  Kingsuk Brahma ,  Hyunwoo Nho

IPC: G09G3/36

CPC classification number: G09G3/3688 ,  G09G3/3648 ,  G09G3/3655 ,  G09G3/3696 ,  G09G2300/0426 ,  G09G2310/027 ,  G09G2310/0291 ,  G09G2320/0233 ,  G09G2320/0276 ,  G09G2320/029

Abstract: Devices and methods for reducing or eliminating image artifacts are provided. By way of example, a display panel includes a pixels including pixel electrodes configured to receive an image data signal, and common electrodes (VCOMs) configured to receive a common voltage signal. The display panel includes a source driver, which includes a first digital to analog converter (DAC) configured to generate a gamma voltage signal to provide a first adjustment to the image data signal, and a second DAC configured to generate an error correction voltage signal to provide a second adjustment to the image data signal. The second adjustment is configured to adjust the image data signal to compensate for an operational characteristic difference between row pixels and column pixels of the display panel. The source driver includes an output buffer to supply the image data signal to the pixel electrodes.

Abstract translation: 提供了用于减少或消除图像伪像的设备和方法。 作为示例，显示面板包括被配置为接收图像数据信号的像素电极的像素和被配置为接收公共电压信号的公共电极（VCOM）。 显示面板包括源驱动器，其包括被配置为产生伽马电压信号以对图像数据信号提供第一调整的第一数模转换器（DAC）和被配置为产生纠错电压信号的第二DAC 对图像数据信号提供第二调整。 第二调整被配置为调整图像数据信号以补偿显示面板的行像素和列像素之间的操作特性差异。 源极驱动器包括用于将图像数据信号提供给像素电极的输出缓冲器。

公开(公告)号：US20150084911A1

公开(公告)日：2015-03-26

申请号：US14035104

申请日：2013-09-24

Applicant: APPLE INC.

Inventor： David A. Stronks ,  Ahmad Al-Dahle ,  Wei H. Yao

IPC: G06F3/044

CPC classification number: G06F3/044 ,  G02F1/13624 ,  G02F2001/13606 ,  G06F3/0412 ,  G06F3/0416 ,  G06F3/0418 ,  G06F2203/04107 ,  G09G3/20 ,  G09G3/3655 ,  G09G2300/0847 ,  G09G2320/0209

Abstract: Devices and methods for reducing display-to-touch crosstalk are provided. In or more examples, an electronic display panel may include a pixel. The pixel may include a pixel electrode, a common electrode, and a first transistor having a first source coupled to a data line, a first gate coupled to a gate line, and a first drain coupled to the pixel electrode. The first transistor may be configured to pass a data signal from the data line to the pixel electrode upon receipt of an activation signal from the gate line. The pixel may also include a second transistor having a second source coupled to the common electrode, a second gate coupled to the gate line, and a second drain coupled to a common voltage source. The second transistor may be configured to cause a parasitic capacitance between the gate line and the second drain of the second transistor instead of between the gate line and the first drain of the first transistor.

Abstract translation: 提供了用于减少显示到触摸串扰的装置和方法。 在一个或多个示例中，电子显示面板可以包括像素。 像素可以包括像素电极，公共电极和具有耦合到数据线的第一源极的第一晶体管，耦合到栅极线的第一栅极和耦合到像素电极的第一漏极。 第一晶体管可以被配置为在从栅极线接收到激活信号时将数据信号从数据线传递到像素电极。 像素还可以包括具有耦合到公共电极的第二源极的第二晶体管，耦合到栅极线的第二栅极和耦合到公共电压源的第二漏极。 第二晶体管可以被配置为在第二晶体管的栅极线和第一漏极之间引起栅极线与第二晶体管的第二漏极之间的寄生电容。

公开(公告)号：US20140168292A1

公开(公告)日：2014-06-19

申请号：US14106384

申请日：2013-12-13

Applicant: APPLE INC.

Inventor： Wei H. Yao ,  Yafei Bi ,  Ahmad Al-Dahle

IPC: G09G3/32

CPC classification number: G09G3/3208 ,  G09G5/003 ,  G09G2300/0861 ,  G09G2360/144

Abstract: An electronic display includes a display panel, which includes an array of pixels and a driver configured to activate and deactivate the emission of light from each of the pixels in the array. The electronic display also includes a panel driver configured to generate and transmit an emission interrupt signal to the driver, wherein the emission interrupt signal causes the driver to deactivate the emission of light from all pixels in the array for a set period of time prior to a refresh of a line of pixels in the array.

Abstract translation: 电子显示器包括显示面板，其包括像素阵列和被配置为激活和去激活阵列中的每个像素的光的发射的驱动器。 电子显示器还包括面板驱动器，其被配置为产生并向驱动器发送发射中断信号，其中发射中断信号使驱动器在阵列中的所有像素的一定时间段内去激发光的发射，持续一段时间 刷新阵列中的一行像素。