公开(公告)号：WO2018026503A1

公开(公告)日：2018-02-08

申请号：PCT/US2017/042437

申请日：2017-07-17

Applicant: APPLE INC.

Inventor： JIN, Jiayi ,  CHO, Myung-Je ,  SACCHETTO, Paolo ,  YAO, Weijun

IPC: G09G3/20

Abstract: A display may have curved edges such as rounded corners. Pixels in the display may be controlled so that the active area of the display has the desired curved edge shape. In order to maximize the apparent smoothness of the curved edge, the display may include circuitry that dims some of the pixels based on their location relative to a spline for the curved edge. The display circuitry may include a multiplication circuit that receives image data as a first input and dimming factors from a gain table as a second input. The image data may include a brightness level for each pixel in the array of pixels. The multiplication circuit may multiply the brightness level for each pixel by its respective dimming factor. This modified image data may then be supplied to the imaging pixels using display driver circuitry.

Abstract translation:

显示屏可能有弯曲的边缘，如圆角。 可以控制显示器中的像素，使得显示器的有效区域具有期望的弯曲边缘形状。 为了最大化弯曲边缘的表观平滑度，显示器可以包括基于其相对于弯曲边缘的样条的位置来调暗一些像素的电路。 显示电路可以包括乘法电路，其接收作为第一输入的图像数据和来自增益表的调光因子作为第二输入。 图像数据可以包括像素阵列中的每个像素的亮度级别。 乘法电路可以将每个像素的亮度等级乘以其各自的调光因子。 然后可以使用显示驱动器电路将该修改的图像数据提供给成像像素。

公开(公告)号：EP3347893A1

公开(公告)日：2018-07-18

申请号：EP17746257.9

申请日：2017-07-17

Applicant: Apple Inc.

Inventor： JIN, Jiayi ,  CHO, Myung-Je ,  SACCHETTO, Paolo ,  YAO, Weijun

IPC: G09G3/20

Abstract: A display may have curved edges such as rounded corners. Pixels in the display may be controlled so that the active area of the display has the desired curved edge shape. In order to maximize the apparent smoothness of the curved edge, the display may include circuitry that dims some of the pixels based on their location relative to a spline for the curved edge. The display circuitry may include a multiplication circuit that receives image data as a first input and dimming factors from a gain table as a second input. The image data may include a brightness level for each pixel in the array of pixels. The multiplication circuit may multiply the brightness level for each pixel by its respective dimming factor. This modified image data may then be supplied to the imaging pixels using display driver circuitry.

公开(公告)号：EP3347893B1

公开(公告)日：2020-11-18

申请号：EP17746257.9

申请日：2017-07-17

Applicant: Apple Inc.

Inventor： JIN, Jiayi ,  CHO, Myung-Je ,  SACCHETTO, Paolo ,  YAO, Weijun

IPC: G09G3/20

公开(公告)号：EP3686875A1

公开(公告)日：2020-07-29

申请号：EP20153036.7

申请日：2020-01-22

Applicant: Apple Inc.

Inventor： JIN, Jiayi ,  DOYLE, David ,  KOO, Kyung Hoae ,  YANG, Maofeng ,  LIM, Michael ,  SACCHETTO, Paolo ,  JOHNSON, Timothy ,  RAJENDRAN, Venkatesh ,  YAO, Weijun ,  CHU, Yue Jack

IPC: G09G3/3233

Abstract: A display may have an array of organic light-emitting diode display pixels. Each display pixel may include a drive transistor coupled in series with one or more emission transistors and a respective organic light-emitting diode (OLED). A semiconducting-oxide transistor may be coupled between a drain terminal and a gate terminal of the drive transistor to help reduce leakage during low-refresh-rate display operations. To compensate for variations in the threshold voltage of the semiconducting-oxide transistor, the magnitude of a high voltage level of a scan control signal provided to the gate terminal of the semiconducting-oxide transistor may be adjusted. Sensing circuitry may be used to sense a display current while displaying a calibration image. The sensed display current may be compared to an expected display current associated with the calibration image. Processing circuitry may update the high voltage level based on the actual display current compared to the expected display current.