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.)

A method for detecting alignment deviation of a display panel, wherein the display panel comprises a light modulation screen and a display screen, the light modulation screen is arranged at a backlight side of the display screen and is configured to perform backlight modulation on the display screen, and the method comprises the following steps:

providing a first data signal for enabling the dimming screen to display an alignment dimming picture comprising a first alignment pattern;

providing a second data signal for enabling the display screen to display an alignment display picture comprising a second alignment pattern;

under the control of the first data signal, enabling the dimming screen to display the alignment dimming picture, and under the control of the second data signal, enabling the display screen to display the alignment display picture;

determining the alignment state between the display screen and the light modulation screen according to the display condition of the second alignment pattern in the alignment display picture,

wherein an orthographic projection of the second alignment pattern on the light modulation screen is preset to be at least partially aligned with the first alignment pattern and at least partially offset from the first alignment pattern.

The method of claim 1, wherein the first alignment pattern comprises a first portion, the second alignment pattern comprises a first portion, a second portion, and a third portion that are independent of each other,

the orthographic projection of the second alignment pattern on the light modulation screen is preset to be at least partially aligned with the first alignment pattern and at least partially offset from the first alignment pattern, and the method comprises the following steps:

an orthographic projection of the first part of the second alignment pattern on the light modulation screen is preset to deviate towards a first side of the first part of the first alignment pattern in a first alignment direction;

the orthographic projection of the second part of the second alignment pattern on the light modulation screen is preset to be aligned with the first part of the first alignment pattern in the first alignment direction;

an orthographic projection of a third portion of the second alignment pattern on the light modulation screen is preset to be offset in the first alignment direction to a second side of the first portion of the first alignment pattern,

the first part of the second alignment pattern and the third part of the second alignment pattern are opposite in deviation direction and same in deviation distance relative to the first part of the first alignment pattern, and the first side and the second side of the first part of the first alignment pattern are opposite sides.

The method of claim 2, wherein the dimming screen comprises a plurality of dimming pixels, and the plurality of dimming pixels are arranged in M rows and N columns; the display screen comprises a plurality of display pixels, the display pixels are arranged in alpha M rows and alpha N columns, wherein M and N are positive integers, M is larger than or equal to 3, N is larger than or equal to 3, and alpha is a positive integer.

The method of claim 3, wherein the first portion of the first registration pattern comprises a first dimming line segment,

under the control of the first data signal, the method for displaying the alignment dimming picture on the dimming screen comprises the following steps:

and under the control of the first data signal, controlling at least part of dimming pixels positioned on the mth row of the dimming screen to display the first dimming line segment, wherein M is a positive integer and is more than or equal to 2 and less than or equal to M-1.

The method of claim 4, wherein α -2, the first portion of the second overlay pattern comprises a first display line segment, the second portion of the second overlay pattern comprises a second display line segment, the third portion of the second overlay pattern comprises a third display line segment,

under the control of the second data signal, the display screen displays the alignment display picture, including:

under the control of the second data signal, controlling display pixels positioned in the (2 x m-2) -beta rows of the display screen from the nb column to the nb ' column and the (2 x m-1) -beta row to display the first display line segment, controlling display pixels positioned in the (2 x m-1) row from the nc column to the nc ' column and the (2 x m) row to display the second display line segment, and controlling display pixels positioned in the (2 x m) + beta row from the nd column to the nd ' column and the (2 x m +1) + beta row of the display screen to display the third display line segment, wherein beta is 0, 1 or 2 nb, nb ', nd ' and the nd column to the nd ' column, and beta is 0, 1 or 2 nd, nb ', and, nc ', nd and nd ' are positive integers, nb is more than or equal to 1 and less than or equal to nb ', nc is more than or equal to nc ', nd is more than or equal to nd ', and less than or equal to 2N.

The method of claim 5, wherein the first bit direction is a column direction of a plurality of dimming pixels of the dimming screen, the bit states comprising a first bit state, a second bit state, and a third bit state,

the first alignment state indicates that there is no misalignment in alignment between the display panel and the dimming panel in a column direction of the plurality of dimming pixels of the dimming panel,

the second alignment state indicates that the display screen is offset by one row of display pixels relative to the dimming screen in a column direction of the plurality of dimming pixels of the dimming screen,

the third alignment state indicates that the display screen is offset by a next row of display pixels relative to the dimming screen in a column direction of the plurality of dimming pixels of the dimming screen.

The method of claim 6, wherein β -0,

determining the alignment state between the display screen and the light modulation screen according to the display condition of the second alignment pattern, including:

when the brightness value of the second display line segment is greater than the brightness value of the first display line segment and the brightness value of the third display line segment, and the brightness value of the first display line segment is equal to the brightness value of the third display line segment, determining that the display screen and the dimming screen are in the first alignment state;

when the brightness value of the third display line segment is greater than the brightness value of the second display line segment, and the brightness value of the second display line segment is greater than the brightness value of the first display line segment, determining that the display screen and the dimming screen are in the second alignment state; alternatively, the first and second electrodes may be,

and when the brightness value of the first display line segment is greater than that of the second display line segment, and the brightness value of the second display line segment is greater than that of the third display line segment, determining that the display screen and the dimming screen are in the third alignment state.

The method of claim 6 or 7, wherein the first portion of the second alignment pattern further comprises a fourth display line segment, the third portion of the second alignment pattern further comprises a fifth display line segment,

under the control of the second data signal, the display screen is enabled to display the alignment display picture, and the method further comprises the following steps:

under the control of the second data signal, display pixels located in the (2 m-3) -beta rows and the na-th to na ' -th columns of the display screen and the na-th to na ' -th rows of the display screen are controlled to display the fourth display line segment in the second alignment pattern, and display pixels located in the (2 m +1) + beta rows and the ne-th to ne ' -th columns of the (2 m +2) + beta rows of the display screen are controlled to display the fifth display line segment in the second alignment pattern, wherein na, na ', ne and ne ' are positive integers, and 1. ltoreq. na ' < nb ≦ nb ' < nc ' < nd ≦ ne ' < nd ' < ne ' ≦ 2N.

The method of claim 8, wherein β -0,

determining the alignment state between the display screen and the light modulation screen according to the display condition of the second alignment pattern, including:

when the brightness value of the second display line segment is greater than the brightness value of the first display line segment, the brightness value of the third display line segment, the brightness value of the fourth display line segment and the brightness value of the fifth display line segment, the brightness value of the first display line segment is equal to the brightness value of the third display line segment, the brightness value of the fourth display line segment is equal to the brightness value of the fifth display line segment, and the brightness value of the first display line segment is greater than the brightness value of the fourth display line segment, it is determined that the display screen and the dimming screen are in the first alignment state;

when the brightness value of the third display line segment is greater than the brightness value of the first display line segment, the brightness value of the second display line segment, the brightness value of the fourth display line segment and the brightness value of the fifth display line segment, the brightness value of the second display line segment is equal to the brightness value of the fifth display line segment, and the brightness value of the first display line segment is less than the brightness value of the second display line segment and greater than the brightness value of the fourth display line segment, determining that the display screen and the dimming screen are in the second alignment state; alternatively, the first and second electrodes may be,

when the brightness value of the first display line segment is greater than the brightness value of the second display line segment, the brightness value of the third display line segment, the brightness value of the fourth display line segment and the brightness value of the fifth display line segment, the brightness value of the second display line segment is equal to the brightness value of the fourth display line segment, and the brightness value of the third display line segment is less than the brightness value of the second display line segment and greater than the brightness value of the fifth display line segment, it is determined that the display screen and the dimming screen are in a third alignment state.

The method of any of claims 3-9, wherein the first registration pattern further comprises a second portion, the second registration pattern further comprises a fourth portion, a fifth portion, and a sixth portion that are independent of each other,

the orthographic projection of the second alignment pattern on the dimming screen being preset to be at least partially aligned with and at least partially offset from the first alignment pattern further comprises:

an orthographic projection of a fourth part of the second alignment pattern on the light modulation screen is preset to deviate towards a first side of a second part of the first alignment pattern in a second alignment direction;

an orthographic projection of a fifth part of the second alignment pattern on the light-adjusting screen is preset to be aligned with a second part of the first alignment pattern in a second alignment direction;

an orthographic projection of a sixth portion of the second alignment pattern on the light-adjusting screen is preset to be offset in a second alignment direction to a second side of the second portion of the first alignment pattern,

the fourth part of the second alignment pattern and the sixth part of the second alignment pattern deviate from the second part of the first alignment pattern in opposite directions and by the same distance;

the first side and the second side of the second portion of the first alignment pattern are two sides opposite to each other;

the first alignment direction and the second alignment direction are perpendicular to each other on a plane parallel to the light modulation screen.

The method of claim 10, wherein the second portion of the first registration pattern includes a second dimming line segment,

under the control of the first data signal, the method for displaying the alignment dimming picture on the dimming screen further comprises:

and under the control of the first data signal, controlling at least part of dimming pixels positioned on the nth column of the dimming screen to display the second dimming line segment, wherein N is a positive integer and is more than or equal to 2 and less than or equal to N-1.

The method of claim 11, wherein α -2, the fourth portion of the second alignment pattern comprises a sixth display line segment, the fifth portion of the second alignment pattern comprises a seventh display line segment, the sixth portion of the second alignment pattern comprises an eighth display line segment,

under the control of the second data signal, the display screen displays the alignment display picture, including:

under the control of the second data signal, controlling display pixels located in (2 × n-2) - γ columns of the display screen from the mb th row to the mb ' th row and in (2 × n-1) - γ columns to display the sixth display line segment, controlling display pixels located in (2 × n-1) th row to the mc ' th row and in (2 × n) th column to display the seventh display line segment, and controlling display pixels located in (2 × n) + γ columns of the display screen from the md ' th row to display the eighth display line segment, wherein γ is 0 or 1, mb ', mc, and mc ' th column, md and md ' are positive integers, mb is more than or equal to 1 and less than or equal to mb ' < mc and less than or equal to mc ' < md and less than or equal to 2M.

The method of claim 12, wherein the second alignment direction is a row direction of a plurality of dimming pixels of the dimming screen, the alignment states comprising a fourth alignment state, a fifth alignment state, and a sixth alignment state,

the fourth alignment state indicates that there is no misalignment in alignment between the display panel and the dimming panel in a row direction of the plurality of dimming pixels of the dimming panel,

the fifth alignment state represents that the display screen is shifted to the left column of display pixels relative to the dimming screen in the row direction of the plurality of dimming pixels of the dimming screen,

the sixth alignment state indicates that the display screen is shifted to the right column of display pixels relative to the dimming screen in the row direction of the plurality of dimming pixels of the dimming screen.

The method of claim 13, wherein γ ═ 0,

determining the alignment state between the display screen and the light modulation screen according to the display condition of the second alignment pattern, including:

when the brightness value of the seventh display line segment is greater than the brightness value of the sixth display line segment and the brightness value of the eighth display line segment, and the brightness value of the sixth display line segment is equal to the brightness value of the eighth display line segment, determining that the display screen and the dimming screen are in a fourth alignment state;

when the brightness value of the eighth display line segment is greater than the brightness value of the seventh display line segment, and the brightness value of the seventh display line segment is greater than the brightness value of the sixth display line segment, determining that the display screen and the dimming screen are in a fifth alignment state; alternatively, the first and second electrodes may be,

and when the brightness value of the sixth display line segment is greater than the brightness value of the seventh display line segment, and the brightness value of the seventh display line segment is greater than the brightness value of the eighth display line segment, determining that the display screen and the dimming screen are in a sixth alignment state.

The method of claim 13 or 14, wherein the fourth portion of the second alignment pattern further comprises a ninth display line segment, the sixth portion of the second alignment pattern further comprises a tenth display line segment,

under the control of the second data signal, the display screen is enabled to display the alignment display picture, and the method further comprises the following steps:

under the control of the second data signal, controlling display pixels positioned in the ma row to the ma ' th row in the (2 x n-3) -gamma column and the ma row to the ma ' th row in the (2 x n-2) -gamma column of the display screen to display the ninth display line segment, and controlling display pixels positioned in the me row to the me ' th row in the (2 x n +1) + gamma column and the me row to the me ' th column in the (2 x n +2) + gamma column to display the tenth display line segment, wherein ma, ma ', me and me ' are positive integers, and ma is more than or equal to 1 and less than or equal to ma ' < mb ' < mc ' < md ' < me ' < 2M.

The method of claim 15, wherein γ ═ 0,

determining the alignment state between the display screen and the light modulation screen according to the display condition of the second alignment pattern, including:

when the brightness value of the seventh display line segment is greater than the brightness value of the sixth display line segment, the brightness value of the eighth display line segment, the brightness value of the ninth display line segment and the brightness value of the tenth display line segment, the brightness value of the sixth display line segment is equal to the brightness value of the eighth display line segment, the brightness value of the ninth display line segment is equal to the brightness value of the tenth display line segment, and the brightness value of the sixth display line segment is greater than the brightness value of the ninth display line segment, determining that the display screen and the dimming screen are in a fourth alignment state;

when the brightness value of the eighth display line segment is greater than the brightness value of the sixth display line segment, the brightness value of the seventh display line segment, the brightness value of the ninth display line segment and the brightness value of the tenth display line segment, the brightness value of the seventh display line segment is equal to the brightness value of the tenth display line segment, and the brightness value of the sixth display line segment is less than the brightness value of the seventh display line segment and equal to the brightness value of the ninth display line segment, determining that the display screen and the dimming screen are in a fifth alignment state; alternatively, the first and second electrodes may be,

when the brightness value of the sixth display line segment is greater than the brightness value of the seventh display line segment, the brightness value of the eighth display line segment, the brightness value of the ninth display line segment, and the brightness value of the tenth display line segment, and the brightness value of the seventh display line segment is equal to the brightness value of the ninth display line segment, and the brightness value of the eighth display line segment is less than the brightness value of the seventh display line segment and equal to the brightness value of the tenth display line segment, determining that the display screen and the dimming screen are in a sixth alignment state.

A data compensation method of a display panel, wherein the display panel comprises a dimming screen and a display screen, the dimming screen is arranged at a backlight side of the display screen and is configured to perform backlight modulation on the display screen, the method comprises:

determining an alignment state between the display screen and the dimming screen using the method of any one of claims 1-16;

acquiring an image signal of an input image to be displayed;

determining dimming pixel data of a dimming picture to be displayed by the dimming screen based on the image signal according to the alignment state;

and determining display pixel data of a display picture to be displayed by the display screen based on the image signal and the dimming pixel data according to the alignment state.

The method of claim 17, wherein the dimming screen comprises a plurality of dimming pixels, the display screen comprises a plurality of display pixels,

according to the alignment state, determining dimming pixel data of the dimming picture to be displayed by the dimming screen based on the image signal comprises the following steps:

determining initial pixel data corresponding to each display pixel of the display screen in the image signal according to the pixel corresponding relation between the image signal and the display screen;

determining the pixel corresponding relation of the display screen and the dimming screen on the physical position according to the alignment state;

determining one or more display pixels of the display screen corresponding to one dimming pixel of the dimming screen in a physical position according to the pixel corresponding relation between the display screen and the dimming screen in the physical position; and

dimming pixel data for a dimming pixel of the dimming screen that physically corresponds to the one or more display pixels is determined based on the initial pixel data corresponding to each of the one or more display pixels.

The method of claim 18, wherein determining dimming pixel data for a dimming pixel of the dimming screen that physically corresponds to the one or more display pixels based on initial pixel data corresponding to each of the one or more display pixels comprises:

in the alignment state, regarding one dimming pixel of the dimming screen physically corresponding to one display pixel of the display screen, taking initial pixel data corresponding to the one display pixel as dimming pixel data of the one dimming pixel of the dimming screen physically corresponding to the one display pixel; and

in the alignment state, for one dimming pixel of the dimming panel physically corresponding to a plurality of display pixels of the display panel, a maximum value of initial pixel data corresponding to each of the plurality of display pixels is selected as dimming pixel data of one dimming pixel of the dimming panel physically corresponding to the plurality of display pixels.

The method of claim 18 or 19,

determining display pixel data of a display picture to be displayed by the display screen based on the image signal and the dimming pixel data according to the alignment state, comprising:

in the alignment state, regarding one or more display pixels of the display screen which do not correspond to any dimming pixel of the dimming screen in physical position, taking initial pixel data corresponding to each display pixel of the one or more display pixels as display pixel data of the one or more display pixels of the display screen; and

in the alignment state, for one or more display pixels of the display screen that physically correspond to one dimming pixel of the dimming screen, display pixel data of the one or more display pixels of the display screen is determined based on initial pixel data corresponding to each of the one or more display pixels and dimming pixel data of the one dimming pixel of the dimming screen that physically correspond to the one or more display pixels.

The method of claim 20, wherein determining display pixel data for one or more display pixels of the display screen based on initial pixel data corresponding to each of the one or more display pixels and dimming pixel data for dimming pixels of the dimming screen that physically correspond to the one or more display pixels comprises determining display pixel data for one or more display pixels of the display screen according to a calculation formula expressed as:

Main＝h(f(In)*g(Sub))

where Main denotes display pixel data of one or more display pixels of the display screen, Sub denotes dimming pixel data of dimming pixels of the dimming screen physically corresponding to the one or more display pixels of the display screen, In denotes initial pixel data corresponding to the one or more display pixels of the display screen, and the function h (x) x^1/2.2Function f (x) x^2.2Function g (x) x^-1。

An alignment deviation detecting apparatus comprising:

a processor;

a memory storing computer executable instructions that,

wherein the computer executable instructions, when executed by the processor, cause the processor to perform the method of any of claims 1-16.

A data compensation apparatus, comprising:

a processor;

a memory storing computer executable instructions that,

wherein the computer executable instructions, when executed by the processor, cause the processor to perform the method of any of claims 17-21.