阅读说明：本技术 对位偏差检测方法及其装置、数据补偿方法及其装置 (Alignment deviation detection method and device, and data compensation method and device ) 是由 习艳会 史天阔 孙炎 张小牤 侯一凡 段欣 孙伟 陈明 黄文杰 张少如 于 2020-03-27 设计创作，主要内容包括：一种显示面板的对位偏差检测方法及其装置、数据补偿方法及其装置,该显示面板包括调光屏和显示屏,调光屏设置于显示屏的背光侧且被配置为对显示屏进行背光调制。该显示面板的对位偏差检测方法包括：提供使调光屏显示包括第一对位图案的对位调光画面的第一数据信号；提供使显示屏显示包括第二对位图案的对位显示画面的第二数据信号；在第一数据信号的控制下,使所述调光屏显示对位调光画面,并在第二数据信号的控制下,使显示屏显示对位显示画面；根据对位显示画面中的第二对位图案的显示情况,确定显示屏与调光屏之间的对位状态,其中,第二对位图案在调光屏上的正投影被预设为至少部分与第一对位图案对准以及至少部分与第一对位图案偏离。(A display panel comprises a dimming screen and a display screen, wherein the dimming screen is arranged on the backlight side of the display screen and is configured to perform backlight modulation on the display screen. The method for detecting the alignment deviation of the display panel comprises the following steps: providing a first data signal which enables the dimming screen to display an alignment dimming picture comprising a first alignment pattern; providing a second data signal for displaying an alignment display picture comprising a second alignment pattern on the display screen; under the control of the first data signal, the dimming screen displays an alignment dimming picture, and under the control of the second data signal, the display screen displays an alignment display picture; and determining the alignment state between the display screen and the dimming screen according to the display condition of a second alignment pattern in the alignment display picture, wherein the orthographic projection of the second alignment pattern on the dimming screen is preset to be at least partially aligned with the first alignment pattern and at least partially deviated from the first alignment pattern.)