公开(公告)号：US20170032742A1

公开(公告)日：2017-02-02

申请号：US15262449

申请日：2016-09-12

Applicant: Apple Inc.

Inventor： Johan L. PIPER ,  James C. AAMOLD ,  Shengkui GAO ,  Hung Sheng LIN ,  Hyunwoo NHO

IPC: G09G3/3266

CPC classification number: G09G3/3233 ,  G09G2300/0842 ,  G09G2320/0223 ,  G09G2320/0233 ,  G09G2320/0295 ,  G09G2360/145

Abstract: In order to reduce non-uniform luminance and/or chrominance, a display panel can determine, on a pixel-by-pixel basis in at least a row of pixels, a correction for voltage drops in the display panel. The voltage drop can be estimated based on a state of pixels in the display panel corresponding to at least a portion of a current frame of image data and at least a portion of a previous frame of image data. Moreover, based on the correction, the display plane can modify on the pixel-by-pixel basis in at least the row: a supply voltage applied to the display panel; a digital representation of the image data in the current frame that correspond to the pixels; and pixel drive signals corresponding to the image data in the current frame. Furthermore, the correction may be based on a predefined calibration constant and/or may be dynamically calculated.

Abstract translation: 为了减少不均匀的亮度和/或色度，显示面板可以在至少一行像素的逐个像素的基础上确定对显示面板中的电压降的校正。 可以基于对应于图像数据的当前帧的至少一部分和图像数据的先前帧的至少一部分的显示面板中的像素的状态来估计电压降。 此外，基于校正，显示平面可以至少在逐个像素的基础上修改：施加到显示面板的电源电压; 对应于像素的当前帧中的图像数据的数字表示; 以及对应于当前帧中的图像数据的像素驱动信号。 此外，校正可以基于预定义的校准常数和/或可以被动态地计算。

公开(公告)号：US20160300527A1

公开(公告)日：2016-10-13

申请号：US15064230

申请日：2016-03-08

Applicant: Apple Inc.

Inventor： Johan L. PIPER ,  James C. AAMOLD

IPC: G09G3/32

CPC classification number: G09G3/3233 ,  G09G2300/0842 ,  G09G2320/0223 ,  G09G2320/0233 ,  G09G2320/0295 ,  G09G2360/145

Abstract: This application relates to systems, methods, and apparatus for reducing non-uniform luminance of an organic light emitting diode (OLED) display panel. In order to reduce non-uniform luminance, the display panel can compensate for an amount of voltage drop that is occurring across a line of the display panel. The voltage drop can be estimated based on image data provided to the display panel and one or more calibration constants stored by the display panel. The calibration constants can be generated during manufacturing of the display panel in order to equip the display panel with an accurate means for predicting voltage drop across each line of the display panel. During calibration, a predetermined display pattern is output by the display panel. Thereafter, an amount of luminance projected from the display panel is compared with an expected amount of luminance associated with the predetermined display pattern to calculate the calibration constant.

Abstract translation: 本申请涉及用于降低有机发光二极管（OLED）显示面板的不均匀亮度的系统，方法和装置。 为了降低不均匀的亮度，显示面板可以补偿在显示面板的一行上发生的电压降的量。 可以基于提供给显示面板的图像数据和由显示面板存储的一个或多个校准常数来估计电压降。 可以在制造显示面板期间产生校准常数，以便为显示面板配备用于预测显示面板每条线上的电压降的准确装置。 在校准期间，显示面板输出预定的显示图案。 此后，将从显示面板投影的亮度量与与预定显示图案相关联的预期亮度量进行比较，以计算校准常数。