Method for improving resolution of cylindrical rotating display screen, and display screen

Abstract

The present disclosure relates to a method for improving the resolution of a cylindrical rotating display screen. The method for improving the resolution comprises: when a light bar substrate rotates, each LED chip on a light-emitting bar and LED chip(s) at horizontally corresponding position(s) of one or two light-emitting bars adjacent to said light-emitting bar form a second light-emitting group, and the second light-emitting group at least comprises a group of red, green and blue chips; each second light-emitting group corresponds to a pixel point of a picture that needs to be displayed, and when a certain chip of the second light-emitting group reaches the position of the pixel point at a first moment, two chips of other colors reach the pixel point at a second moment and / or a third moment, and the three chips of the second light-emitting group are controlled to display the color corresponding to the pixel. The present disclosure has the effects that LED chips in different rows overlap in spatial positions at different times, three LED chips in different rows can be further grouped, and compared with the mode that lamp beads are inserted among lamp beads to improve the resolution, the resolution can be further improved.

Description

A method for improving the resolution of a cylindrical rotating display screen and the display screen itself.

[0001] Cross-references to related applications

[0002] This disclosure claims priority to Chinese Patent Application No. 2024105080909, filed on April 25, 2024, entitled "A Method for Improving the Resolution of a Cylindrical Rotating Display Screen", the entire contents of which are incorporated herein by reference. Technical Field

[0003] This disclosure belongs to the field of electronic technology, and more specifically, relates to a method for improving the resolution of a cylindrical rotating display screen and the display screen itself. Background Technology

[0004] A monitor is an output device that displays electronic information (such as text, images, and videos) in a visible form for people to view and interpret. Monitors typically include a screen, circuit board, power supply, etc., and can be categorized by technology into CRT monitors, LCD monitors, OLED monitors, etc. Point of View (POV) is one of the key principles for displaying images. Many modern monitors, such as LED displays and e-ink screens, utilize the POV principle to present images. By rapidly switching different images or pixels on the screen, and utilizing the persistence of vision effect of the human eye, these images or pixels are superimposed on the retina, thus presenting a continuous dynamic or static image. Therefore, POV is one of the key technologies for displaying images.

[0005] However, in practical applications, most displays use traditional SMT LED strip designs, but this design results in a large gap between the LEDs on adjacent strips, leading to poor display accuracy, which can no longer meet market demands.

[0006] Application content

[0007] To address the issue of poor display accuracy caused by large distances between LEDs on adjacent LED strips, this disclosure provides a method for improving the resolution of a cylindrical rotating display screen. The specific technical solution is as follows: The cylindrical rotating display screen includes a drive motor, a control board, and an LED strip substrate. The drive motor is configured to drive the LED strip substrate to rotate. The LED strip substrate has at least one light-emitting strip, and the length direction of the LED strip substrate is parallel to the rotation center axis of the drive motor. The control board is configured to control the light-emitting strip to emit light and display an image. The method for improving resolution includes:

[0008] Each of the light-emitting strips includes a plurality of first light-emitting groups, which are arranged along the length of the light strip substrate; each first light-emitting group includes a plurality of LED chips, which can be red chips and / or green chips and / or blue chips;

[0009] When the light strip substrate rotates, each LED chip on the light strip and one or two LED chips at horizontally corresponding positions on the adjacent light strip form a second light-emitting group. The second light-emitting group includes at least one red chip, one green chip, and one blue chip.

[0010] Each of the second light-emitting groups is associated with a pixel of the image to be displayed. When one of the LED chips in the second light-emitting group reaches the position of the pixel at a first moment, the other two LED chips reach the pixel at a second and / or third moment, controlling the three LED chips in the second light-emitting group to display the color corresponding to the pixel.

[0011] When the drive light bar substrate rotates, two or three adjacent light bars overlap each other. The red chip on one of the light bars combines with the green and blue chips on the two or three adjacent light bars to form a new pixel, namely the second light group, to display the pixels of the image to be displayed, thereby increasing the pixel count of the display screen.

[0012] Optionally, a plurality of LED chips in the first light-emitting group are arranged along the length direction of the light strip substrate; or a plurality of LED chips in the first light-emitting group are arranged in a staggered manner.

[0013] Because the first light-emitting groups are spaced apart, black stripes can easily appear between them, affecting the display's pixels. Therefore, by having the light-emitting groups of adjacent light-emitting strips overlap, the display's pixels can be improved.

[0014] Optionally, when there are two light-emitting strips, the first light-emitting groups of adjacent light-emitting strips are staggered.

[0015] Optionally, when several LED chips in each first light-emitting group are arranged along the length of the light strip substrate, the horizontal center distance between two adjacent LED chips in the same first light-emitting group is A, the distance between two adjacent first light-emitting groups is B, and the number of light-emitting strips on the same light strip substrate is N, where A = B / N / 3*2.

[0016] Optionally, when two adjacent LED chips in each of the plurality of LED chips in the first light-emitting group are staggered, the horizontal center distance between two adjacent LED chips in the same first light-emitting group is a, the distance between two adjacent first light-emitting groups is b, and the number of light-emitting strips on the same light strip substrate is n, where a = b / n / 3.

[0017] Optionally, when there is one light strip substrate, there are at least two first light-emitting strips on the light strip substrate;

[0018] When there are at least two light strip substrates, there is at least one light-emitting strip on the light strip substrate.

[0019] Optionally, the light strip substrate is provided with a protective film layer configured to cover the light-emitting group.

[0020] Optionally, the side of the light strip substrate away from the protective film layer is provided with a light strip sleeve.

[0021] With a protective film on the front of the LED strip substrate and a LED strip sleeve on the back, the overall strength of the display screen can be increased, the risk of dust accumulation can be reduced, and the reliability can be guaranteed. On the other hand, the LED chip is protected by a protective film layer and has a smooth surface, thus reducing air resistance.

[0022] Optionally, there are three light-emitting strips: the first light-emitting strip has all red LED chips, the second light-emitting strip has all green LED chips, and the third light-emitting strip has all blue LED chips.

[0023] Optionally, there are two light-emitting strips, and each of the plurality of LED chips in the first light-emitting group includes a red chip, a green chip, and a blue chip.

[0024] Optionally, the LED chip is fixed on the light strip substrate using a COB process.

[0025] This disclosure also provides a display screen, including a drive motor, a control board, and a light strip substrate. The drive motor is configured to drive the light strip substrate to rotate. The light strip substrate has at least one light-emitting strip. The length direction of the light strip substrate is parallel to the rotation center axis direction of the drive motor. The control board is configured to control the light-emitting strip to emit light and display an image.

[0026] Each of the light-emitting strips includes a plurality of first light-emitting groups, which are arranged along the length of the light strip substrate; each first light-emitting group includes a plurality of LED chips, which can be red chips and / or green chips and / or blue chips;

[0027] When the light strip substrate rotates, each LED chip on the light strip and one or two LED chips at horizontally corresponding positions on the adjacent light strip form a second light-emitting group. The second light-emitting group includes at least one red chip, one green chip and one blue chip.

[0028] Each of the second light-emitting groups corresponds to a pixel of the image to be displayed. When one of the LED chips in the second light-emitting group reaches the position of the pixel at a first moment, the other two LED chips reach the pixel at a second and / or third moment. The control board is configured to control the three LED chips in the second light-emitting group to display the color corresponding to the pixel.

[0029] Optionally, a plurality of the LED chips in the first light-emitting group are arranged along the length direction of the light strip substrate;

[0030] Alternatively, several LED chips in the first light-emitting group may be arranged in a staggered manner, with adjacent pairs of chips staggered.

[0031] Optionally, when several LED chips in each first light-emitting group are arranged along the length of the light strip substrate, the horizontal center distance between two adjacent LED chips in the same first light-emitting group is A, the distance between two adjacent first light-emitting groups is B, and the number of light-emitting strips on the same light strip substrate is N, where A = B / N / 3*2.

[0032] Optionally, when two adjacent LED chips in each of the first light-emitting groups are staggered, the horizontal center distance between two adjacent LED chips in the same first light-emitting group is a, the distance between two adjacent first light-emitting groups is b, and the number of light-emitting strips on the same light strip substrate is n, where a = b / n / 3.

[0033] The method for improving the resolution of the cylindrical rotating display screen disclosed herein and the beneficial technical effects of the display screen include: when the drive motor drives the light bar substrate to rotate, each LED chip on the light bar and two other LED chips at the horizontally corresponding positions of one or two adjacent light bars form a second light-emitting group, which can correspond to the pixels of the image to be displayed. Compared with the method of improving resolution by inserting LED beads between LED beads, the resolution can be further improved. Attached Figure Description

[0034] Figure 1 is a schematic diagram of the first exploded structure of the display screen in an embodiment of this disclosure;

[0035] Figure 2 is a schematic diagram of a second exploded structure of the display screen in an embodiment of this disclosure;

[0036] Figure 3 is a schematic diagram of the structure of the light-emitting strip in an embodiment of this disclosure;

[0037] Figure 4 is a schematic diagram of the horizontal arrangement of LED chips in an embodiment of this disclosure;

[0038] Figure 5 is a schematic diagram illustrating the structures of A and B in the embodiments of this disclosure;

[0039] Figure 6 is a schematic diagram of the diagonally arranged LED chips in an embodiment of this disclosure;

[0040] Figure 7 is a schematic diagram illustrating the structures of a and b in the embodiments of this disclosure;

[0041] Figure 8 is a schematic diagram illustrating the structure of the first row of LED chips and the second row of LED chips in an embodiment of this disclosure.

[0042] Figure 9 is a schematic diagram illustrating the overlap of two light-emitting strips during operation in an embodiment of this disclosure;

[0043] Figure 10 is a schematic diagram illustrating the overlapping structure of LED chips in two light-emitting strips in an embodiment of this disclosure.

[0044] Explanation of reference numerals in the attached diagram: 1. LED strip substrate; 2. LED strip; 3. First LED group; 4. LED chip; 5. Red chip; 6. Green chip; 7. Blue chip; 8. Protective film layer; 9. LED strip sheath; 10. Driver chip; 11. Connector; 12. Second LED group; 121. Pixel 1; 122. Pixel 2; 123. Pixel 3; 13. Driver motor; 14. Control board. Detailed Implementation

[0045] The present disclosure will be further described in detail below with reference to Figures 1-10.

[0046] Referring to Figures 1-3, a method for improving the resolution of a cylindrical rotating display screen is described. The display screen includes a frame, on which a drive motor 13 and a control board 14 are respectively mounted. A light strip substrate 1 is mounted on the drive motor 13, and the length direction of the light strip substrate 1 is parallel to the rotation axis of the drive motor 13. The rotation direction of the display screen is the Y-direction.

[0047] At least one light-emitting strip 2 is provided on the light strip substrate 1. The control board 14 is configured to control the light-emitting strip 2 to emit light and display an image. The light-emitting strip 2 is arranged along the length direction of the light strip substrate 1. When there is one light strip substrate 1, there are at least two light-emitting strips 2 on the light strip substrate 1; when there are at least two light strip substrates 1, there is at least one light-emitting strip 2 on the light strip substrate 1. In this embodiment, there is one light strip substrate 1 and two light-emitting strips 2, which are arranged along the width direction of the light strip substrate 1.

[0048] Each light-emitting strip 2 includes several first light-emitting groups 3, which are arranged along the length of the light strip substrate 1, and the first light-emitting groups 3 of adjacent light-emitting strips 2 are staggered.

[0049] Each first light-emitting group 3 includes several LED chips 4, which can be red chips 5 and / or green chips 6 and / or blue chips 7; the LED chips 4 are mounted on the light strip substrate 1 by COB process, i.e. flip-chip die bonding.

[0050] LED chip 4 can be red chip 5 and / or green chip 6 and / or blue chip 7, that is, several LED chips 4 in each first light-emitting group 3 can be one or more of red chip 5, green chip 6 and blue chip 7.

[0051] Referring to Figure 8-10, when the light strip substrate 1 rotates, each LED chip 4 on the light strip 2 and one or two LED chips 4 at horizontally corresponding positions on the adjacent light strip 2 form a second light-emitting group 12. The second light-emitting group 12 includes at least one red chip 5, one green chip 6 and one blue chip 7.

[0052] Each second light-emitting group 12 is associated with a pixel of the image to be displayed. When one of the LED chips 4 of the second light-emitting group 12 reaches the position of the pixel at the first moment, the other two LED chips 4 reach the pixel at the second and / or third moment, and control the three LED chips 4 of the second light-emitting group 12 to display the color corresponding to the pixel.

[0053] A driver chip 10 is soldered on the side of the light strip substrate 1 away from the LED chip 4. The control board 14 is electrically connected to the driver chip 10, and the driver chip 10 is electrically connected to the LED chip 4. The driver chip 10 drives the red chip 5, green chip 6 and blue chip 7 to turn on and off. The driving method is common anode or common cathode scanning. In each lighting cycle, only the LED chips 4 in the same row of multiple first light-emitting groups 3 are lit. In each scanning cycle, several rows of LED chips 4 on the light strip substrate 1 are lit in sequence.

[0054] A connector 11 is provided at one end of the light strip substrate 1, which is configured to connect the light strip substrate 1 to the control board 14. A protective film layer 8 is provided on the light strip substrate 1 to cover the first light-emitting group 3. In this embodiment, the protective film layer 8 is transparent and is specifically an epoxy resin layer. The transparent protective film layer 8 can be designed to be frosted or matte to reduce the impact of reflection on the display effect. A light strip sleeve 9 is provided on the side of the light strip substrate 1 away from the protective film layer 8.

[0055] In this embodiment, the plurality of LED chips 4 include at least a red chip 5, a green chip 6, and a blue chip 7.

[0056] In other embodiments, there are three light-emitting strips 2. The LED chips 4 on the first light-emitting strip 2 are all red chips 5, the LED chips 4 on the second light-emitting strip 2 are all green chips 6, and the LED chips 4 on the third light-emitting strip 2 are all blue chips 7. Alternatively, there are two light-emitting strips 2, and the LED chips 4 in each first light-emitting group 3 include red chips 5, green chips 6, and blue chips 7.

[0057] Referring to Figures 4 and 5, several LED chips 4 of each first light-emitting group 3 are arranged along the length of the light strip substrate 1, i.e., arranged horizontally. In this arrangement, the horizontal center distance between two adjacent LED chips 4 of the same first light-emitting group 3 is A, the distance between two adjacent first light-emitting groups 3 is B, and the number of light-emitting strips 2 on the same light strip substrate 1 is N, where A = B / N / 3*2.

[0058] Referring to Figures 6 and 7, in each first light-emitting group 3, adjacent LED chips 4 are staggered, i.e., arranged diagonally. In this arrangement, the horizontal center distance between two adjacent LED chips 4 in the same first light-emitting group 3 is a, the distance between two adjacent first light-emitting groups 3 is b, and the number of light-emitting strips 2 on the same light strip substrate 1 is n, where a = b / n / 3.

[0059] This embodiment also discloses a method for improving resolution, including:

[0060] The processor acquires image information and drive signals;

[0061] The processor decodes the acquired image information to generate a digital signal and transmits the digital signal to the driver chip 10. The driver chip 10 receives the digital signal and transmits it to the LED chip 4 to drive the LED chip 4 to turn on and off.

[0062] The drive motor 13 drives the rotor in the drive motor 13 to rotate by the acquired drive signal, thereby driving the light strip substrate 1 to rotate; wherein, the processor is electrically connected to the drive motor 13, and the processor includes one or more control boards 14.

[0063] When there are at least two light strip substrates 1, the light strip substrates 1 rotate. At one of the times, two adjacent LED chips 4 in one of the first light-emitting groups 3 on one of the light strip substrates 1 overlap with LED chips 4 in one of the first light-emitting groups 3 on the next light strip substrate 1 to form a red chip 5, a green chip 6 and a blue chip 7, which constitute the second light-emitting group 12.

[0064] When there is one light strip substrate 1, there are at least two light-emitting strips 2 on the light strip substrate 1. When the light strip substrate 1 rotates, two adjacent LED chips 4 in one of the first light-emitting groups 3 on the previous light-emitting strip 2 on the light strip substrate 1 overlap with one of the first light-emitting groups 3 on the next light-emitting strip 2, forming a red chip 5, a green chip 6, and a blue chip 7, which constitutes the second light-emitting group 12.

[0065] Taking the light strip substrate 1 as one example, with two light-emitting strips 2 on the light strip substrate 1:

[0066] The drive motor 13 rotates the light strip substrate 1, causing the LED chips 4 on the light strip substrate 1 to rotate. Referring to Figure 8, the light strip 2 marked with the number "1" is in the first row, and the light strip 2 marked with the number "2" is in the second row. Referring to Figures 9 and 10, the drive motor 13 rotates the light strip substrate 1 for a period of time, and the light strip 2 marked with the number "2" moves a certain distance, causing the second row of LED chips 4 to move to the horizontal position of the first row at the previous moment. That is, the current position of the second row of LED chips 4 overlaps with the first row of LED chips 4. By regrouping the LED chips 4 at the overlapping positions, it can be found that the red chip 5 and green chip 6 of the first row at the previous moment and the blue chip 7 at the corresponding position of the second row at this moment, the green chip 6 and blue chip 7 of the first row at the previous moment and the red chip 5 at the corresponding position of the second row at this moment, and the red chip 5 and blue chip 7 of the first row at the previous moment and the green chip 6 at the corresponding position of the second row at this moment, can form three second light-emitting groups 12, thus forming a complete red / green / blue group, that is, a complete three pixels.

[0067] In this case, the position of the first row LED chip 4 at this moment is P1, the position of the first row LED chip 4 at the previous moment and the position of the second row LED chip 4 at this moment are both P2, and the position of the second row LED chip 4 at the previous moment is P3.

[0068] Each second light-emitting group 12 is associated with a pixel of the image to be displayed. When the red chip 5 of the second light-emitting group 12 arrives at the pixel position at the first moment, the two LED chips 4 of other colors arrive at the pixel at the second and / or third moment. The processor controls the three LED chips 4 of the second light-emitting group 12 to display the color corresponding to the pixel.

[0069] The horizontal position of each pixel is the center of the corresponding LED chip 4 in the first or second row of that group. Therefore, with this new grouping method, the actual horizontal resolution is the sum of the number of LEDs of all colors in all rows. Since each first light-emitting group 3 in each row contains a red chip 5, a green chip 6, and a blue chip 7 when the light-emitting strip 2 is designed, the horizontal resolution = the number of first light-emitting groups 3 in each row * the number of rows * 3. Compared with the ordinary display method of inserting LEDs between LEDs, the resolution is increased by three times, thereby improving the image precision.

[0070] In some embodiments:

[0071] Please refer to Figure 1: The display screen shown in Figure 1 includes a light strip substrate 1, on which at least one light-emitting strip 2 is provided, and each light-emitting strip 2 includes a plurality of first light-emitting groups 3; a connector 11 is provided at the end of the light strip substrate 1, and a protective film layer 8 is provided on the light strip substrate 1 to cover the first light-emitting groups 3, and a light strip sheath 9 is provided on the side of the light strip substrate 1 away from the protective film layer 8; a driver chip 10 is soldered on the side of the light strip substrate 1 away from the light-emitting strip 2.

[0072] Please refer to Figure 2: The display screen shown in Figure 2 includes a drive motor 13 and a control board 14. The drive motor 13 is provided with a light strip substrate 1, and the light strip substrate 1 is provided with at least one light-emitting strip 2. Each light-emitting strip 2 includes several first light-emitting groups 3. The end of the light strip substrate 1 is provided with a connector 11, which is configured to connect the light strip substrate 1 and the control board 14. The light strip substrate 1 is provided with a protective film layer 8 configured to cover the first light-emitting groups 3. The side of the light strip substrate 1 away from the protective film layer 8 is provided with a light strip sleeve 9. A drive chip 10 is soldered on the side of the light strip substrate 1 away from the light-emitting strip 2.

[0073] Please refer to Figure 3: The light strip substrate 1 shown in Figure 3 is provided with a light-emitting strip 2. The light-emitting strip 2 includes a plurality of first light-emitting groups 3. Each first light-emitting group 3 includes a plurality of LED chips 4. The LED chips 4 in each first light-emitting group 3 can be red chips 5 and / or green chips 6 and / or blue chips 7.

[0074] Please refer to Figure 4: Each first light-emitting group 3 shown in Figure 4 includes several LED chips 4. The several LED chips 4 of each first light-emitting group 3 are arranged along the length direction of the light strip substrate 1, that is, arranged horizontally.

[0075] Please refer to Figure 5: As shown in Figure 5, several LED chips 4 of each first light-emitting group 3 are arranged along the length direction of the light strip substrate 1, that is, arranged horizontally. In this arrangement, the horizontal center distance between two adjacent LED chips 4 of the same first light-emitting group 3 is A, and the distance between two adjacent first light-emitting groups 3 is B.

[0076] Please refer to Figure 6: Each first light-emitting group 3 shown in Figure 6 includes several LED chips 4. In each first light-emitting group 3, two adjacent LED chips 4 are staggered, that is, arranged diagonally.

[0077] Please refer to Figure 7: In each first light-emitting group 3 shown in Figure 7, two adjacent LED chips 4 are staggered, that is, arranged diagonally. In this arrangement, the horizontal center distance between two adjacent LED chips 4 in the same first light-emitting group 3 is a, and the distance between two adjacent first light-emitting groups 3 is b.

[0078] Please refer to Figure 8: The light strip 2 marked with the number "1" is in the first row, and the light strip 2 marked with the number "2" is in the second row.

[0079] Please refer to Figure 9: Figure 9 shows the process of the display screen rotating along the Y direction. During the process of the display screen rotating along the Y direction, the light strip 2 marking the number "1" moves from position P2 to position P1, and the light strip 2 marking the number "2" moves from position P3 to position P2. That is, the light strip 2 marking the number "1" at the previous moment and the light strip 2 marking the number "2" at this moment overlap at position P2.

[0080] Please refer to Figure 10: Figure 10 shows the state where the two light-emitting strips 2 are overlapping. The second light-emitting group 12, which is composed of two adjacent LED chips 4 in one light-emitting strip 2 and one LED chip 4 in the other light-emitting strip 2, is pixel 121, pixel 222, or pixel 323. Pixel 121, pixel 222, and pixel 323 each include a red chip 5, a green chip 6, and a blue chip 7.

[0081] The above are all preferred embodiments of this disclosure and are not intended to limit the scope of protection of this disclosure. Therefore, all equivalent changes made to the structure, shape and principle of this disclosure should be included within the scope of protection of this disclosure. Industrial applicability

[0082] When the drive motor 13 drives the light strip substrate 1 to rotate, each LED chip 4 on the light strip 2 and two other LED chips 4 at the horizontally corresponding positions of one or two adjacent light strips 2 form a second light-emitting group 12, which can correspond to the pixels of the image to be displayed. Compared with the method of inserting LED beads between LED beads to improve resolution, the resolution is effectively improved.

Claims

1. A method for improving the resolution of a cylindrical rotating display screen, the cylindrical rotating display screen comprising a drive motor (13), a control board (14), and a light strip substrate (1), the drive motor (13) being configured to drive the light strip substrate (1) to rotate, the light strip substrate (1) having at least one light-emitting strip (2), the length direction of the light strip substrate (1) being parallel to the rotation center axis direction of the drive motor (13), and the control board (14) being configured to control the light-emitting strip (2) to emit light and display an image; characterized in that, The method for improving resolution includes: Each of the light-emitting strips (2) includes a plurality of first light-emitting groups (3), and the plurality of first light-emitting groups (3) are arranged along the length direction of the light strip substrate (1); the first light-emitting group (3) includes a plurality of LED chips (4), and the LED chips (4) can be red chips (5) and / or green chips (6) and / or blue chips (7); When the light strip substrate (1) rotates, each LED chip (4) on the light-emitting strip (2) and the LED chips (4) at the horizontally corresponding positions of one or two adjacent light-emitting strips (2) form a second light-emitting group (12), and the second light-emitting group (12) includes at least one red chip (5), one green chip (6) and one blue chip (7); Each of the second light-emitting groups (12) is associated with a pixel of the image to be displayed. When one of the LED chips (4) of the second light-emitting group (12) reaches the position of the pixel at a first moment, the other two LED chips (4) reach the pixel at a second and / or third moment, and control the three LED chips (4) of the second light-emitting group (12) to display the color corresponding to the pixel.

2. The method for improving the resolution of a cylindrical rotating display screen according to claim 1, characterized in that: A plurality of LED chips (4) of the first light-emitting group (3) are arranged along the length direction of the light strip substrate (1); Alternatively, several LED chips (4) of the first light-emitting group may be arranged in a staggered manner, with adjacent two chips staggered.

3. A method for improving the resolution of a cylindrical rotating display screen according to claim 1 or 2, characterized in that: When there are two light-emitting strips (2), the first light-emitting groups (3) of adjacent light-emitting strips (2) are staggered.

4. A method for improving the resolution of a cylindrical rotating display screen according to any one of claims 1-3, characterized in that: When a plurality of LED chips (4) of each first light-emitting group (3) are arranged along the length direction of the light strip substrate (1), the horizontal center distance between two adjacent LED chips (4) of the same first light-emitting group (3) is A, the distance between two adjacent first light-emitting groups (3) is B, and the number of light-emitting strips (2) on the same light strip substrate (1) is N, A = B / N / 3*2.

5. A method for improving the resolution of a cylindrical rotating display screen according to any one of claims 1-3, characterized in that: When two adjacent LED chips (4) in a plurality of LED chips (4) of each first light-emitting group (3) are staggered, the horizontal center distance between two adjacent LED chips (4) in the same first light-emitting group (3) is a, the distance between two adjacent first light-emitting groups (3) is b, and the number of light-emitting strips (2) on the same light strip substrate (1) is n, a = b / n / 3.

6. A method for improving the resolution of a cylindrical rotating display screen according to any one of claims 1-5, characterized in that: When there is one light strip substrate (1), there are at least two light-emitting strips (2) on the light strip substrate (1); When there are at least two light strip substrates (1), there is at least one light-emitting strip (2) on the light strip substrate (1).

7. A method for improving the resolution of a cylindrical rotating display screen according to any one of claims 1-6, characterized in that: The light bar substrate (1) is provided with a protective film layer (8) configured to cover the first light-emitting group (3).

8. The method for improving the resolution of a cylindrical rotating display screen according to claim 7, characterized in that: The light strip substrate (1) has a light strip sleeve (9) on the side away from the protective film layer (8).

9. A method for improving the resolution of a cylindrical rotating display screen according to any one of claims 1-8, characterized in that, The light-emitting strip (2) consists of three strips. The first strip has a plurality of red LED chips (4) all of which are red chips (5), the second strip has a plurality of green LED chips (6) all of which are green chips (6), and the third strip has a plurality of blue LED chips (7).

10. A method for improving the resolution of a cylindrical rotating display screen according to any one of claims 1-9, characterized in that, The light-emitting strip (2) consists of two strips, and each of the first light-emitting groups (3) comprises a plurality of LED chips (4) including a red chip (5), a green chip (6) and a blue chip (7).

11. A method for improving the resolution of a cylindrical rotating display screen according to any one of claims 1-10, characterized in that, The LED chip (4) is fixed on the light strip substrate (1) by COB process.

12. A display screen, characterized in that, The device includes a drive motor (13), a control board (14), and a light strip substrate (1). The drive motor (13) is configured to drive the light strip substrate (1) to rotate. The light strip substrate (1) is provided with at least one light-emitting strip (2). The length direction of the light strip substrate (1) is parallel to the rotation center axis direction of the drive motor (13). The control board (14) is configured to control the light-emitting strip (2) to emit light and display an image. Each of the light-emitting strips (2) includes a plurality of first light-emitting groups (3), and the plurality of first light-emitting groups (3) are arranged along the length direction of the light strip substrate (1); the first light-emitting group (3) includes a plurality of LED chips (4), and the LED chips (4) can be red chips (5) and / or green chips (6) and / or blue chips (7); When the light strip substrate (1) rotates, each of the LED chips (4) on the light-emitting strip (2) and the LED chips (4) at the horizontally corresponding positions of one or two adjacent light-emitting strips (2) form a second light-emitting group (12). The second light-emitting group (12) includes at least one red chip (5), one green chip (6) and one blue chip (7). Each of the second light-emitting groups (12) corresponds to a pixel of the image to be displayed. When one of the LED chips (4) of the second light-emitting group (12) reaches the position of the pixel at a first moment, the other two LED chips (4) reach the pixel at a second and / or third moment. The control board (14) is configured to control the three LED chips (4) of the second light-emitting group (12) to display the color corresponding to the pixel.

13. The display screen according to claim 12, characterized in that, A plurality of LED chips (4) of the first light-emitting group (3) are arranged along the length direction of the light strip substrate (1); Alternatively, several LED chips (4) of the first light-emitting group may be arranged in a staggered manner, with adjacent two chips staggered.

14. The display screen according to claim 12 or 13, characterized in that, When a plurality of LED chips (4) of each first light-emitting group (3) are arranged along the length direction of the light strip substrate (1), the horizontal center distance between two adjacent LED chips (4) of the same first light-emitting group (3) is A, the distance between two adjacent first light-emitting groups (3) is B, and the number of light-emitting strips (2) on the same light strip substrate (1) is N, A = B / N / 3*2.

15. The display screen according to claim 12 or 13, characterized in that, When two adjacent LED chips (4) in a plurality of LED chips (4) of each first light-emitting group (3) are staggered, the horizontal center distance between two adjacent LED chips (4) in the same first light-emitting group (3) is a, the distance between two adjacent first light-emitting groups (3) is b, and the number of light-emitting strips (2) on the same light strip substrate (1) is n, a = b / n / 3.

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