# US 2022/0036787 A1 · Scanning modification method and display device

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- Number: US 2022/0036787 A1
- Document ID: US20220036787A1
- Status: Published application
- Kind: A1
- Application number: 17/212,431
- Filed: 2021-03-25
- Published: 2022-02-03
- Earliest claimed: 2020-07-30
- Assignees: Chengdu Boe Optoelectronics Technology Co., Ltd.; Boe Technology Group Co., Ltd.
- Applicants: Chengdu Boe Optoelectronics Technology Co., Ltd.; Boe Technology Group Co., Ltd.
- Inventors: Qianqian LIU; Chuanyan LAN; Xin BI
- Web page: https://patentgrep.com/patent/US20220036787A1

## CPC

- G09G 3/20: for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix {no fixed position being assigned to or needed to be assigned to the individual characters or partial characters}
- G09G 2300/0404: Matrix technologies
- G09G 2300/0443: with several sub-pixels for the same colour in a pixel, not specifically used to display gradations (G09G3/364 takes precedence)
- G09G 2340/0492: Change of orientation of the displayed image, e.g. upside-down, mirrored
- G09G: ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION (arrangements for transferring data between digital computers and displays G06F3/14; static indicating arrangements comprising an association of a number of separate sources or light control cells G09F9/00; static indicating arrangements comprising integral associations of a number of light sources H01J, H01K, H10H, H05B33/12; scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission, details thereof H04N1/00)

## Abstract

This application discloses a scanning modification method for modifying an offset between a display panel and a cover plate and a display device. A scanning modification method of a display panel includes: determining a scanning reference point according to an offset angle, which offset angle refers to an alignment offset angle between the cover plate and the display panel; determining a scanning unit and the distribution of individual scanning units in a redefined scanning line according to the offset angle and the size of sub-pixel units, which scanning unit includes at least one sub-pixel unit; determining the starting point of each redefined scanning line according to the offset angle and the size of sub-pixel units; and performing scan display according to the scanning reference point, the distribution of the scanning units and the starting point of the redefined scanning line that are determined.

## Claims

### Claim 1

A scanning modification method for modifying an offset between a display panel and a cover plate, wherein the method includes:
determining a scanning reference point according to an offset angle, which offset angle refers to an alignment offset angle between the cover plate and the display panel;
determining a scanning unit and the distribution of individual side scanning units in a redefined scanning line according to the offset angle and the size of sub-pixel units, which scanning unit includes at least one sub-pixel unit;
determining the starting point of each said redefined scanning line according to the offset angle and the size of sub-pixel units; and
performing scan display according to the scanning reference point, the distribution of the scanning units and the starting point of the redefined scanning line that are determined.

### Claim 2 (depends on 1)

The scanning modification method as claimed in claim 1, wherein the offset between the display panel and the cover plate is an offset of the alignment angle of the display panel and the cover plate, and the geometric centers of the display panel and the cover plate have no offset and coincide.

### Claim 3 (depends on 2)

The scanning modification method as claimed in claim 2, wherein both the cover plate and the display panel have a circular shape and the centers of the two coincide.

### Claim 4 (depends on 3)

The scanning modification method as claimed in claim 3, wherein the determining a scanning reference point (x2, y2) according to an offset angle includes:
determining the scanning reference point according to the following formula
x
⁢
⁢
2
=
x
⁢
⁢
1
[
1
+
2
-
2
⁢
cos
⁢
⁢
β
⁢
(
cos
⁢
β
2
-
sin
⁢
β
2
)
]
y
⁢
⁢
2
=
y
⁢
⁢
1
[
1
+
2
-
2
⁢
cos
⁢
⁢
β
⁢
(
cos
⁢
β
2
+
sin
⁢
β
2
)
]
wherein x1 and y1 are the abscissa and the ordinate of an original scanning reference point of the display panel, respectively, and β is the offset angle.

### Claim 5 (depends on 3)

The scanning modification method as claimed in claim 3, wherein the individual sub-pixel units of the display panel are arranged in a matrix, and the determining a scanning unit according to the offset angle and the size of sub-pixel units includes:
determining the number M of sub-pixel units in each scanning unit according to the following formula:
M=a÷(tan β×b)
wherein a is the height of a sub-pixel unit, b is the width of the sub-pixel unit, and β is the offset angle, and wherein M is a positive integer; and
determining each scanning unit according to the determined number of sub-pixel units in each scanning unit and a matrix row of the matrix.

### Claim 6 (depends on 5)

The scanning modification method as claimed in claim 5, wherein the determining each scanning unit according to the determined number of sub-pixel units in each scanning unit and a matrix row of the matrix includes:
arranging the M sub-pixel units in sequence according to the matrix row of the matrix,
wherein different scanning units do not share the same sub-pixel unit.

### Claim 7 (depends on 6)

The scanning modification method as claimed in claim 6, wherein in a case in which it is observed in a direction from the cover plate to the display panel that the cover plate is offset clockwise relative to the display panel, the determining the distribution of individual said scanning units in a redefined scanning line according to the offset angle and the size of sub-pixel units includes:
determining the redefined scanning line in the following way: if the i-th scanning unit in the redefined scanning line is located in the j-th matrix row of the matrix, then the (i+1)-th scanning unit in the redefined scanning line is located in the (j+1)-th matrix row of the matrix and the previous scanning unit is connected end to end with the next scanning unit, wherein i and j are positive integers.

### Claim 8 (depends on 6)

The scanning modification method as claimed in claim 6, wherein in a case in which it is observed in a direction from the cover plate to the display panel that the cover plate is offset counterclockwise relative to the display panel, the determining the distribution of individual said scanning units in a redefined scanning line according to the offset angle and the size of sub-pixel units includes:
determining the redefined scanning line in the following way: if the i-th scanning unit in the redefined scanning line is located in the j-th matrix row of the matrix, then the (i+1)-th scanning unit in the redefined scanning line is located in the (j−1)-th matrix row of the matrix and the previous scanning unit is connected end to end with the next scanning unit, wherein i is a positive integer and j is a positive integer greater than or equal to 2.

### Claim 9 (depends on 8)

The scanning modification method as claimed in claim 8, wherein the determining the starting point of each said redefined scanning line according to the offset angle and the size of sub-pixel units includes:
determining the number N of line scanning starting points located in the same column according to the following formula
N=b÷(tan β×a)
wherein a is the height of sub-pixel units, b is the width of sub-pixel units, and β is the offset angle, and wherein N is a positive integer; and
determining the starting point of each redefined scanning line in the following way: if the k- to (k+N−1)-th starting points corresponding to different redefined scanning lines are located in the 1-th matrix column of the matrix, then the (k+N)- to (k+2N−1)-th starting points corresponding to different redefined scanning lines are located in the (l+1)-th matrix column of the matrix, wherein k and l are positive integers.

### Claim 10 (depends on 7)

The scanning modification method as claimed in claim 7, wherein the determining the starting point of each said redefined scanning line according to the offset angle and the size of sub-pixel units includes:
determining the number N of line scanning starting points located in the same column according to the following formula
N=b÷(tan β×a)
wherein a is the height of sub-pixel units, b is the width of sub-pixel units, and β is the offset angle, and wherein N is a positive integer; and
determining the starting point of each redefined scanning line in the following way: if the k- to (k+N−1)-th starting points corresponding to different redefined scanning lines are located in the 1-th matrix column of the matrix, then the (k+N)- to (k+2N−1)-th starting points corresponding to different redefined scanning lines are located in the (l−1)-th matrix column of the matrix, wherein k is a positive integer and l is a positive integer greater than or equal to 2

### Claim 11 (depends on 9)

The scanning modification method as claimed in claim 9, wherein when both k and i are 1, the first starting point is the first sub-pixel unit of the first scanning unit, wherein the first sub-pixel unit of the first scanning unit refers to one of at least one sub-pixel unit included in the first scanning unit and arranged in sequence along a matrix row, which is closest to the scanning reference point

### Claim 12 (depends on 10)

The scanning modification method as claimed in claim 10, wherein when both k and i are 1, the first starting point is the first sub-pixel unit of the first scanning unit, wherein the first sub-pixel unit of the first scanning unit refers to one of at least one sub-pixel unit included in the first scanning unit and arranged in sequence along a matrix row, which is closest to the scanning reference point

### Claim 13 (depends on 1)

A display device, wherein the display device includes a cover plate and a display panel, there is an offset between the cover plate and the display panel, and the offset is modified according to the scanning modification method as claimed in claim 1.