Display device with artifact improvement function and light emission control method

Abstract

A display device having an artifact improvement function and a light emission control method are mainly characterized in that a driving circuit divides an image picture into a first sub-picture to an Mth sub-picture, the image picture corresponds to a display time period including M sub-display time periods, and a plurality of light-emitting elements are divided into a plurality of sub-picture arrangement groups, the driving circuit arranges the display sequence of the M sub-pictures for each sub-picture arrangement group, so that the M sub-pictures respectively correspond to the M sub-display time periods in the display sequence, and the first sub-pictures in the display sequence of at least two sub-picture arrangement groups correspond to different sub-display time periods, and the driving circuit controls each sub-picture arrangement group to display one of the M sub-pictures corresponding to the sub-display time period according to the display sequence of the sub-picture arrangement group. And when the exposure time of the photographic equipment is not synchronous with the LED display and the exposure time is less than the display time period, artifacts and flicker pictures of the LED display are improved.

Description

Technical Field

[0001] The present invention relates to a light-emitting diode display technology, and particularly to a display device and a light-emitting control method with an artifact improvement function. Background Art

[0002] Refer to Figure 1 , which is a schematic diagram of artifacts generated by the prior art. Since the exposure time of the photographic device does not cover the entire display time of the display screen of the display, and when the display screen has a low gray-scale value, after the display screen is photographed by the photographic device, artifacts 10 appear in the photographed image. Also, since the exposure time covering the display time of the sub-screen with a low gray-scale value in the display screen is an uncertain period, the position of the artifacts 10 in the photographed image is not fixed, resulting in flicker in the photographed image. Summary of the Invention

[0003] An object of the present invention is to provide a light-emitting control method capable of improving artifacts.

[0004] Thus, the light-emitting control method is executed by a driving circuit to control a display, and the display has a plurality of light-emitting elements. The light-emitting control method includes steps (A) to (D).

[0005] Step (A), the driving circuit receives an image frame and divides the image frame into M sub-frames. The M sub-frames include a first sub-frame to an Mth sub-frame, M = 2 B and B is a positive integer. The image frame corresponds to a display period and has a frame gray-scale value of each light-emitting element. The display period includes M sub-display periods.

[0006] Step (B), the driving circuit sequentially assigns the frame gray-scale values of the light-emitting elements to the M sub-frames starting from the first sub-frame. The light-emitting elements are divided into a plurality of sub-frame arrangement groups.

[0007] Step (C), the driving circuit arranges a display order of the M sub-frames for each sub-frame arrangement group, such that the M sub-frames respectively correspond to the M sub-display periods in the display order, such that the display orders of the sub-frame arrangement groups are different from each other, and such that the first sub-frames in the display orders of at least two sub-frame arrangement groups correspond to different sub-display periods.

[0008] Step (D), in each sub-display period, the driving circuit controls each sub-frame arrangement group to display one of the M sub-frames corresponding to the sub-display period according to its display order.

[0009] The light emission control method of the present invention, in step (B), for each light emitting element, the driving circuit cyclically assigns the frame gray scale value of the light emitting element to the M sub - frames starting from the first sub - frame in a way that assigns one partial gray scale value each time, and the partial gray scale value is less than or equal to a preset value.

[0010] The light emission control method of the present invention, for each light emitting element, when allocating the partial gray scale value to one of the M sub - frames, when the remaining part of the frame gray scale value that has not been allocated is greater than or equal to the preset value, the partial gray scale value is equal to the preset value; and

[0011] For each light emitting element, when allocating the partial gray scale value to one of the M sub - frames, when the remaining part of the frame gray scale value that has not been allocated is less than the preset value, the partial gray scale value is equal to the remaining part of the frame gray scale value that has not been allocated.

[0012] The light emission control method of the present invention, the frame gray scale value of each light emitting element is composed of A bits, and for each sub - frame, the part of the frame gray scale value of each light emitting element allocated to the sub - frame is not greater than 2 A / 2 B 。

[0013] The light emission control method of the present invention, the first sub - frames of the sub - frame arrangement group respectively correspond to different sub - display time periods.

[0014] The light emission control method of the present invention, each sub - display time period is divided into a plurality of scanning periods, the light emitting elements are classified into a plurality of scanning groups respectively corresponding to the scanning periods, and each sub - frame arrangement group is composed of at least one scanning group; and

[0015] In step (D), in each scanning period of the sub - display time period, the driving circuit controls one of the scanning groups corresponding to the scanning period to display one of the M sub - frames corresponding to the sub - display time period according to the display order of the corresponding sub - frame arrangement group.

[0016] Another object of the present invention is to provide a display device capable of improving artifacts.

[0017] Therefore, the display device with artifact improvement function includes:

[0018] A display, having a plurality of light emitting elements;

[0019] A driving circuit, electrically connected to the display, the driving circuit receives an image frame, and divides the image frame into M sub - frames, the M sub - frames include the first sub - frame to the Mth sub - frame, M = 2 BAnd B is a positive integer. The image frame corresponds to a display period and has a frame gray scale value for each light-emitting element. The display period includes M sub-display periods.

[0020] The driving circuit sequentially assigns the frame gray scale value of the light-emitting element to the M sub-frames starting from the first sub-frame. The light-emitting elements are divided into multiple sub-frame arrangement groups.

[0021] For each sub-frame arrangement group, the driving circuit arranges a display order of the M sub-frames such that the M sub-frames respectively correspond to the M sub-display periods in the display order, such that the display orders of the sub-frame arrangement groups are different from each other, and such that the first sub-frames in the display orders of at least two sub-frame arrangement groups correspond to different sub-display periods.

[0022] In each sub-display period, the driving circuit controls each sub-frame arrangement group to display one of the M sub-frames corresponding to the sub-display period according to its display order.

[0023] For the display device with the artifact improvement function of the present invention, for each light-emitting element, the driving circuit cyclically assigns the frame gray scale value of the light-emitting element to the M sub-frames starting from the first sub-frame in a manner of allocating a partial gray scale value each time, and the partial gray scale value is less than or equal to a preset value.

[0024] For the display device with the artifact improvement function of the present invention, for each light-emitting element, when allocating the partial gray scale value to one of the M sub-frames, when the remaining part of the frame gray scale value that has not been allocated is greater than or equal to the preset value, the partial gray scale value is equal to the preset value.

[0025] For the display device with the artifact improvement function of the present invention, for each light-emitting element, when allocating the partial gray scale value to one of the M sub-frames, when the remaining part of the frame gray scale value that has not been allocated is less than the preset value, the partial gray scale value is equal to the remaining part of the frame gray scale value that has not been allocated.

[0026] The effect of the present invention is to improve the artifacts and flickering images of the LED display under the condition that the exposure time of the imaging device is not synchronized with the LED display and the exposure time is less than the display period. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Other features and effects of the present invention will be clearly presented in the embodiments with reference to the drawings:

[0028] Figure 1 is a schematic diagram of artifacts in the prior art;

[0029] Figure 2It is a pull - current type circuit diagram of an embodiment of a display device with artifact improvement function according to the present invention;

[0030] Figure 3 It is a sink - current type circuit diagram of an embodiment of a display device with artifact improvement function according to the present invention;

[0031] Figure 4 It is a flowchart for implementing an illumination control method in an embodiment;

[0032] Figure 5 It is a timing diagram of the sub - screen display sequence of the first aspect of this embodiment;

[0033] Figure 6 It is a timing diagram of the sub - screen display sequence of the second aspect of this embodiment;

[0034] Figure 7 It is a timing diagram of the sub - screen display sequence of the third aspect of this embodiment;

[0035] Figure 8 It is a timing diagram of the sub - screen display sequence of the fourth aspect of this embodiment;

[0036] Figure 9 It is a timing diagram of the sub - screen display sequence of the fifth aspect of this embodiment;

[0037] Figure 10 It is a timing diagram of the sub - screen display sequence of the sixth aspect of this embodiment. Detailed implementation manners

[0038] Before the present invention is described in detail, it should be noted that in the following description, similar elements are denoted by the same reference numerals.

[0039] Refer to Figure 2 、 3 , which are embodiments of a display device with artifact improvement function applying pull - current type (sink type) and sink - current type (source type) according to the present invention, including a display 12 and a driving circuit 11 electrically connected to the display 12. The display 12 has a plurality of light - emitting elements 13. Actually, there are a plurality of light - emitting elements 13 in each column. Each light - emitting element 13 has a light - emitting diode (hereinafter referred to as LED), as Figure 2 shown, the driving circuit 11 of the display device applying pull - current type (sink type) includes a row - scan control circuit 15 and a constant - current circuit 16. The row - scan control circuit 15 is electrically connected to the anodes of a plurality of light - emitting diodes, and the constant - current circuit 16 is electrically connected to the cathodes of a plurality of light - emitting diodes. As Figure 3As shown, the drive circuit 11 for the sink type includes a line scan control circuit 15 and a constant current circuit 16. The line scan control circuit 15 is electrically connected to the cathodes of a plurality of light emitting diodes, and the constant current circuit 16 is electrically connected to the anodes of the plurality of light emitting diodes.

[0040] As Figure 4 shown, the drive circuit 11 executes a light emission control method, including steps (A) to (D).

[0041] Step (A), the drive circuit 11 receives an image frame and divides the image frame into M sub - frames. The M sub - frames include a first sub - frame to an Mth sub - frame, where M = 2 B and B is a positive integer. The image frame corresponds to a display period and has a grayscale value of each light emitting element 13. The display period includes M sub - display periods. Each sub - display period is divided into a plurality of scan periods. The light emitting elements 13 are classified into a plurality of scan groups corresponding to the scan periods respectively. And each sub - frame arrangement group is composed of at least one scan group. For a display with a 4×4 LED array, it includes four scan groups, and each scan group has 4 LEDs. For example Figure 5 shown, B = 3, M = 8. The image frame is divided into 8 sub - frames, including a first sub - frame to an eighth sub - frame. The display period includes eight sub - display periods (T1 to T8). Each sub - display period has four scan periods. The eight sub - display periods are the first sub - display period T1 to the eighth sub - display period T8 respectively.

[0042] Step (B), the drive circuit 11 sequentially assigns the grayscale values of the light emitting elements 13 to the M sub - frames starting from the first sub - frame. The light emitting elements 13 are divided into a plurality of sub - frame arrangement groups. Refer to Figure 5, the four scanning groups are the first scanning group SC1, the second scanning group SC2, the third scanning group SC3, and the fourth scanning group SC4, which are divided into three sub - picture arrangement groups, namely the first sub - picture arrangement group to the third sub - picture arrangement group. The first sub - picture arrangement group includes the first scanning group SC1 and the fourth scanning group SC4, the second sub - picture arrangement group includes the second scanning group SC2, and the third sub - picture arrangement group includes the third scanning group SC3. For each light - emitting element, the driving circuit 11 cyclically assigns the picture gray - scale value of the light - emitting element to the M sub - pictures in sequence starting from the first sub - picture in a way that assigns one partial gray - scale value each time. The partial gray - scale value is less than or equal to a preset value. For example, if the picture gray - scale value = 2 and the preset value = 1, then the partial gray - scale value assigned to the first sub - picture = 1, and the partial gray - scale value assigned to the second sub - picture = 1. Further, for each light - emitting element, during the process of assigning the partial gray - scale value to a sub - picture, when the remaining unassigned part of the picture gray - scale value is greater than or equal to the preset value, the partial gray - scale value is equal to the preset value. For each light - emitting element, during the process of assigning the partial gray - scale value to a sub - picture, when the remaining unassigned part of the picture gray - scale value is less than the preset value, the partial gray - scale value is equal to the remaining unassigned part of the picture gray - scale value. For example, if the picture gray - scale value = 144, the preset value = 16, and it is divided into 8 sub - pictures, then in the first round of assignment, the partial gray - scale value assigned to the first sub - picture first = 16, and the remaining unassigned part of the picture gray - scale value = 144 - 16 = 128. Then the partial gray - scale values assigned to the second sub - picture to the eighth sub - picture in sequence = 16. When the first round of assignment ends, the remaining unassigned part of the picture gray - scale value = 144 - 16×8 = 16. Then in the second round of assignment, the remaining 16 is all assigned to the first sub - picture, so that the final assignment result is that the partial gray - scale value of the first sub - picture = 16 + 16 = 32, and the partial gray - scale values assigned to the second sub - picture to the eighth sub - picture in sequence = 16. The picture gray - scale value of each light - emitting element is composed of A bits, and for each sub - picture, the part of the picture gray - scale value of each light - emitting element assigned to the sub - picture is not greater than 2 A / 2 B .

[0043] Step (C), the driving circuit 11 arranges a display order of the M sub - pictures for each sub - picture arrangement group, so that the M sub - pictures respectively correspond to the M sub - display time periods in the display order, and the display orders of the sub - picture arrangement groups are different from each other. For example, refer to Figure 5, the display order of the 8 sub-pictures to be displayed in the first sub-picture arrangement group from the 8 sub-display time periods (T1 to T8) is 15372648, the display order of the 8 sub-pictures in the second sub-picture arrangement group from the 8 sub-display time periods (T1 to T8) is 73158426, and the display order of the 8 sub-pictures in the third sub-picture arrangement group from the 8 sub-display time periods (T1 to T8) is 81537264. The definitions of the numbers 1 to 8 are the first sub-picture to the eighth sub-picture respectively, and at least two of the first sub-pictures in the display orders of the sub-picture arrangement groups correspond to different sub-display time periods. The implementation aspect of the display order is that the display orders of the sub-pictures between different scan groups are different, while the display orders of the sub-pictures of each LED in the same scan group are the same.

[0044] For example, refer to Figure 5 For the first aspect of this embodiment, the picture gray scale value = 2, the preset value = 1. Therefore, the partial gray scale value assigned to the first sub-picture = 1, the partial gray scale value assigned to the second sub-picture = 1. The first sub-picture of the first sub-picture arrangement group corresponds to the sub-display time period T1, the first sub-picture of the second sub-picture arrangement group corresponds to the sub-display time period T3, and the first sub-picture of the third sub-picture arrangement group corresponds to the sub-display time period T2. Therefore, due to the fact that the first sub-pictures of the first sub-picture arrangement group to the third sub-picture arrangement group respectively correspond to different sub-display time periods, the display screen 32 formed thereby, and the captured screen 31 generated by photographing with a photographing device achieve the effect of eliminating artifacts, effectively solving the problems encountered in the prior art.

[0045] For example, refer to Figure 6 The second aspect of this embodiment is different from the first aspect in that the display order of the 8 sub-pictures in the first sub-picture arrangement group from the 8 sub-display time periods (T1 to T8) is 15372648, the display order of the 8 sub-pictures in the second sub-picture arrangement group from the 8 sub-display time periods (T1 to T8) is 73158426, and the display order of the 8 sub-pictures in the third sub-picture arrangement group from the 8 sub-display time periods (T1 to T8) is 58137264. The first sub-picture of the first sub-picture arrangement group corresponds to the sub-display time period T1, the first sub-picture of the second sub-picture arrangement group corresponds to the sub-display time period T3, and the first sub-picture of the third sub-picture arrangement group corresponds to the sub-display time period T3. Therefore, even though the first sub-pictures of two of the three sub-picture arrangement groups are in the same sub-display time period, the display screen 32 formed thereby, and the captured screen 31 generated by photographing with a photographing device still achieve the effect of eliminating artifacts, effectively solving the problems encountered in the prior art.

[0046] For example, refer to Figure 7The third aspect of this embodiment is different from the first aspect in that: the first sub - picture arrangement group includes the first scanning group SC1 and the third scanning group SC3, the second sub - picture arrangement group includes the second scanning group SC2 and the fourth scanning group SC4. The display order of the 8 sub - pictures in the first sub - picture arrangement group from the 8 sub - display time periods (T1 to T8) is 15372648, and the display order of the 8 sub - pictures in the second sub - picture arrangement group from the 8 sub - display time periods (T1 to T8) is 73158426. The first sub - picture of the first sub - picture arrangement group corresponds to the sub - display time period T1, and the first sub - picture of the second sub - picture arrangement group corresponds to the sub - display time period T3. Therefore, due to the fact that the first sub - pictures of the first sub - picture arrangement group to the second sub - picture arrangement group correspond to different sub - display time periods, the display screen 32 formed thereby, and the captured image 31 generated by the photographing device achieve the effect of eliminating artifacts, effectively solving the problems encountered in the prior art.

[0047] For example, refer to Figure 8 The fourth aspect of this embodiment is different from the first aspect in that: the first sub - picture arrangement group includes the first scanning group SC1, the second sub - picture arrangement group includes the second scanning group SC2, the third sub - picture arrangement group includes the third scanning group SC3, and the fourth sub - picture arrangement group includes the fourth scanning group SC4. The display order of the 8 sub - pictures in the first sub - picture arrangement group from the 8 sub - display time periods (T1 to T8) is 15372648, the display order of the 8 sub - pictures in the second sub - picture arrangement group from the 8 sub - display time periods (T1 to T8) is 81537264, the display order of the 8 sub - pictures in the third sub - picture arrangement group from the 8 sub - display time periods (T1 to T8) is 48153726, and the display order of the 8 sub - pictures in the fourth sub - picture arrangement group from the 8 sub - display time periods (T1 to T8) is 64815372. The first sub - picture of the first sub - picture arrangement group corresponds to the sub - display time period T1, the first sub - picture of the second sub - picture arrangement group corresponds to the sub - display time period T2, the first sub - picture of the third sub - picture arrangement group corresponds to the sub - display time period T3, and the first sub - picture of the fourth sub - picture arrangement group corresponds to the sub - display time period T4. Therefore, due to the fact that the first sub - pictures of the first sub - picture arrangement group to the fourth sub - picture arrangement group correspond to different sub - display time periods, the display screen 32 formed thereby, and the captured image 31 generated by the photographing device achieve the effect of eliminating artifacts, effectively solving the problems encountered in the prior art.

[0048] Refer to Figure 9The fifth aspect of this embodiment is different from the fourth aspect in that: the display order of the 8 sub-pictures in the second sub-picture arrangement group from the 8 sub-display time periods (T1 to T8) is 18537264, and the display order of the 8 sub-pictures in the third sub-picture arrangement group from the 8 sub-display time periods (T1 to T8) is 18453726. The first sub-picture of the first sub-picture arrangement group corresponds to the sub-display time period T1, the first sub-picture of the second sub-picture arrangement group corresponds to the sub-display time period T1, the first sub-picture of the third sub-picture arrangement group corresponds to the sub-display time period T1, and the first sub-picture of the fourth sub-picture arrangement group corresponds to the sub-display time period T4. Therefore, even though the first sub-pictures of three of the four sub-picture arrangement groups repeatedly appear in the sub-display time period T1, since the first sub-picture of the remaining one of the four sub-picture arrangement groups does not repeatedly appear in the sub-display time period T1 but appears in the sub-display time period T4, the captured image can still achieve the effect of improving artifacts and effectively solve the problems encountered in the prior art.

[0049] Refer to Figure 10 The sixth aspect of this embodiment is different from the fourth aspect in that: the display order of the 8 sub-pictures in the second sub-picture arrangement group from the 8 sub-display time periods (T1 to T8) is 81372648, the display order of the 8 sub-pictures in the third sub-picture arrangement group from the 8 sub-display time periods (T1 to T8) is 45172648, and the display order of the 8 sub-pictures in the fourth sub-picture arrangement group from the 8 sub-display time periods (T1 to T8) is 65312648. The second sub-pictures of the first sub-picture arrangement group to the fourth sub-picture arrangement group all correspond to the sub-display time period T5. Therefore, even though the second sub-pictures repeatedly appear in all the sub-picture arrangement groups in the sub-display time period T5, the captured image 31 can still achieve the effect of eliminating artifacts and effectively solve the problems encountered in the prior art.

[0050] Step (D), in each sub-display time period, the driving circuit 11 controls each sub-picture arrangement group to display one of the M sub-pictures corresponding to the sub-display time period according to its display order. In each scanning period of the sub-display time period, the driving circuit 11 controls one of the scanning groups corresponding to the scanning period to display one of the M sub-pictures corresponding to the sub-display time period according to the display order of the corresponding sub-picture arrangement group. For example, refer to Figure 5 In the first aspect, the four sub-pictures respectively displayed by the first scanning group to the fourth scanning group in sequence in the four scanning periods of the first sub-display time period (T1) are 1781, the four sub-pictures respectively displayed by the first scanning group to the fourth scanning group in sequence in the four scanning periods of the second sub-display time period (T2) are 5315, and the four sub-pictures respectively displayed by the first scanning group to the fourth scanning group in sequence in the four scanning periods of the third sub-display time period (T3) are 3153.

[0051] Refer to Figure 6 In the second aspect of Figure 6 , the four sub - pictures respectively displayed by the first scanning group to the fourth scanning group in the four scanning periods of the first sub - display time period (T1) are 1751. The four sub - pictures respectively displayed by the first scanning group to the fourth scanning group in the four scanning periods of the second sub - display time period (T2) are 5385. The four sub - pictures respectively displayed by the first scanning group to the fourth scanning group in the four scanning periods of the third sub - display time period (T3) are 3113.

[0052] Refer to Figure 7 In the third aspect of Figure 7 , the four sub - pictures respectively displayed by the first scanning group to the fourth scanning group in the four scanning periods of the first sub - display time period (T1) are 1717. The four sub - pictures respectively displayed by the first scanning group to the fourth scanning group in the four scanning periods of the second sub - display time period (T2) are 5353. The four sub - pictures respectively displayed by the first scanning group to the fourth scanning group in the four scanning periods of the third sub - display time period (T3) are 3131.

[0053] Refer to Figure 8 In the fourth aspect of Figure 8 , the four sub - pictures respectively displayed by the first scanning group to the fourth scanning group in the four scanning periods of the first sub - display time period (T1) are 1846. The four sub - pictures respectively displayed by the first scanning group to the fourth scanning group in the four scanning periods of the second sub - display time period (T2) are 5184. The four sub - pictures respectively displayed by the first scanning group to the fourth scanning group in the four scanning periods of the third sub - display time period (T3) are 3518. The four sub - pictures respectively displayed by the first scanning group to the fourth scanning group in the four scanning periods of the fourth sub - display time period (T4) are 7351.

[0054] Refer to Figure 9 In the fifth aspect of Figure 9 , the four sub - pictures respectively displayed by the first scanning group to the fourth scanning group in the four scanning periods of the first sub - display time period (T1) are 1116. The four sub - pictures respectively displayed by the first scanning group to the fourth scanning group in the four scanning periods of the second sub - display time period (T2) are 5884. The four sub - pictures respectively displayed by the first scanning group to the fourth scanning group in the four scanning periods of the third sub - display time period (T3) are 3548. The four sub - pictures respectively displayed by the first scanning group to the fourth scanning group in the four scanning periods of the fourth sub - display time period (T4) are 7351.

[0055] Refer to Figure 10In the sixth aspect, the four sub-images respectively displayed by the first to fourth scanning groups in the four scanning periods of the first sub-display period (T1) are 1846, the four sub-images respectively displayed by the first to fourth scanning groups in the four scanning periods of the second sub-display period (T2) are 5155, the four sub-images respectively displayed by the first to fourth scanning groups in the four scanning periods of the third sub-display period (T3) are 3313, and the four sub-images respectively displayed by the first to fourth scanning groups in the four scanning periods of the fourth sub-display period (T4) are 7771.

[0056] In summary, even when the exposure time of the imaging device is not synchronized with the LED display and the exposure time is less than the display period, the driving circuit 11 of the above embodiment sets that at least two first sub-images in N groups of sub-image arrangement groups are not repeatable, N≥2, that is, the first sub-images in the display order of at least two sub-image arrangement groups correspond to different sub-display periods, so as to achieve the purpose of improving the artifacts and flickering images of the LED display.

[0057] The above are only the preferred embodiments of the present invention, and the scope of the implementation of the present invention cannot be limited thereby. That is, all simple equivalent changes and modifications made according to the claims and the content of the specification of the present invention still fall within the scope of the present invention.

Claims

1. A light emission control method, which is executed by a driving circuit to control a display, the display having a plurality of light emitting elements, characterized in that, The light emission control method includes: (A) The driving circuit receives an image frame and divides the image frame into M sub-frames. The M sub-frames include a first sub-frame to an M-th sub-frame, and M = 2 B and B is a positive integer. The image frame corresponds to a display time period and has a frame gray-scale value of each light-emitting element. The display time period includes M sub-display time periods; (B) The driving circuit sequentially assigns the picture gray level value of the light-emitting element to the M sub-pictures starting from the first sub-picture, and the light-emitting elements are divided into a plurality of sub-picture arrangement groups; (C) The driving circuit arranges a display order of the M sub-pictures for each of the sub-picture arrangement groups, such that the M sub-pictures respectively correspond to the M sub-display time periods in the display order, such that the display orders of the sub-picture arrangement groups are different from each other, and such that the first sub-pictures in the display orders of at least two sub-picture arrangement groups correspond to different sub-display time periods; and (D) In each sub-display time period, the driving circuit controls each sub-picture arrangement group to display one of the M sub-pictures corresponding to the sub-display time period according to its display order.

2. The light emission control method according to claim 1, characterized in that In step (B), for each light-emitting element, the driving circuit cyclically assigns the picture gray level value of the light-emitting element to the M sub-pictures starting from the first sub-picture in a manner of assigning one partial gray level value each time, and the partial gray level value is less than or equal to a preset value.

3. The light emission control method according to claim 2, wherein For each light-emitting element, when allocating the partial gray level value to one of the M sub-pictures, when the remaining part of the picture gray level value that has not been allocated is greater than or equal to the preset value, the partial gray level value is equal to the preset value; and For each light-emitting element, when allocating the partial gray level value to one of the M sub-pictures, when the remaining part of the picture gray level value that has not been allocated is less than the preset value, the partial gray level value is equal to the remaining part of the picture gray level value that has not been allocated.

4. The light emission control method according to any one of claims 1 to 3, characterized in that, The grayscale value of each light-emitting element is composed of A bits, and for each sub-picture, the grayscale value of each light-emitting element assigned to the sub-picture is not greater than 2 A / 2 B .

5. The light emission control method according to any one of claims 1 to 3, characterized in that The first sub-pictures of the sub-picture arrangement groups respectively correspond to different sub-display time periods.

6. The light emission control method according to any one of claims 1 to 3, characterized in that, Each of the sub-display time periods is divided into a plurality of scanning periods, the light-emitting elements are classified into a plurality of scanning groups respectively corresponding to the scanning periods, and each sub-picture arrangement group is composed of at least one scanning group; and In step (D), in each scanning period of the sub-display time period, the driving circuit controls one of the scanning groups corresponding to the scanning period to display one of the M sub-pictures corresponding to the sub-display time period according to the display order of the corresponding sub-picture arrangement group.

7. A display device with an artifact improvement function, characterized in that including: A display having a plurality of light-emitting elements; A driving circuit is electrically connected to the display. The driving circuit receives an image frame and divides the image frame into M sub-frames. The M sub-frames include a first sub-frame to an M-th sub-frame, and M = 2 B and B is a positive integer. The image frame corresponds to a display time period and has a frame gray level value of each light-emitting element. The display time period includes M sub-display time periods The driving circuit sequentially assigns the picture gray level value of the light-emitting element to the M sub-pictures starting from the first sub-picture, and the light-emitting elements are divided into a plurality of sub-picture arrangement groups, The driving circuit arranges a display order of the M sub-pictures for each of the sub-picture arrangement groups, such that the M sub-pictures respectively correspond to the M sub-display time periods in the display order, such that the display orders of the sub-picture arrangement groups are different from each other, and such that the first sub-pictures in the display orders of at least two sub-picture arrangement groups correspond to different sub-display time periods, In each sub-display time period, the driving circuit controls each sub-picture arrangement group to display one of the M sub-pictures corresponding to the sub-display time period according to its display order.

8. The display device with an artifact improvement function according to claim 7, characterized in that, For each light-emitting element, the driving circuit cyclically assigns the frame gray-scale value of the light-emitting element to the M sub-frames starting from the first sub-frame in a manner of allocating a partial gray-scale value each time, and the partial gray-scale value is less than or equal to a preset value.

9. The display device with an artifact improvement function according to claim 8, wherein, For each light-emitting element, when allocating the partial gray-scale value to one of the M sub-frames, if the remaining unallocated part of the frame gray-scale value is greater than or equal to the preset value, the partial gray-scale value is equal to the preset value.

10. The display device with an artifact improvement function according to claim 9, characterized in that, For each light-emitting element, when allocating the partial gray-scale value to one of the M sub-frames, if the remaining unallocated part of the frame gray-scale value is less than the preset value, the partial gray-scale value is equal to the remaining unallocated part of the frame gray-scale value.

Images