Light source assembly and manufacturing method thereof, 3D printing equipment, exposure control method and medium

Abstract

The invention provides a light source assembly and a manufacturing method thereof, 3D printing equipment, an exposure control method and a medium, and relates to the technical field of 3D printing. The light source assembly is applied to the 3D printing equipment and comprises at least one light-emitting part, the light-emitting part comprises at least two light-emitting rows, the at least two light-emitting rows are arranged in the first direction, every two adjacent light-emitting rows are not located on the same straight line, and the first direction is perpendicular to the moving direction of the light source assembly during printing. According to the embodiment of the invention, the two adjacent light-emitting rows in the light-emitting part are arranged in a staggered manner instead of splicing to obtain a long linear light source, so that the problem of poor printing effect caused by the fact that a splicing gap cannot meet the splicing precision requirement is avoided, the limitation on the edge size between the single light-emitting rows is reduced, and the printing fineness is improved.

Description

Technical Field

[0001] This application relates to the field of 3D printing technology, and in particular to a light source component and related devices and methods, specifically to a light source component, an exposure control method, a 3D printing device, a readable storage medium, and a method for manufacturing the light source component. Background Technology

[0002] Currently, light sources manufactured using chips, such as micro LED linear light sources, are limited in length due to wafer size constraints. Therefore, multiple chips need to be spliced ​​together to form long linear light sources, such as... Figure 1 As shown, the pixel size used in photopolymer 3D printing is between 5-100µm, requiring very high splicing precision. However, when multiple chips are spliced ​​together, physical interference occurs between two adjacent chips. This causes the splicing gap in the resulting linear light source, i.e., the edge dimensions of each chip, to fail to meet the splicing precision requirements, resulting in poor printing quality around the splicing area. Summary of the Invention

[0003] In view of this, this application provides a light source component and related devices and methods, specifically providing a light source component, an exposure control method, a 3D printing device, a readable storage medium, and a method for manufacturing the light source component, which solves the problem in related technologies where the printing effect around the splicing position is poor due to the splicing gap when multiple chips are spliced ​​together.

[0004] In a first aspect, embodiments of this application provide a light source assembly for use in a 3D printing device, the light source assembly comprising:

[0005] At least one light-emitting element; the light-emitting element includes:

[0006] At least two light-emitting rows are arranged along a first direction, and adjacent light-emitting rows are not on the same straight line. The first direction is perpendicular to the direction of movement of the light source assembly during printing.

[0007] Secondly, embodiments of this application provide a 3D printing device, including: a light source assembly as described in the first aspect.

[0008] Thirdly, embodiments of this application provide an exposure control method applied to a 3D printing device, the 3D printing device including a light source assembly as described in the first aspect, the method comprising:

[0009] The light source assembly is controlled to move relative to the area to be cured and to perform scanning movement.

[0010] During the scanning movement, when the light-emitting element of the light source assembly is opposite to the target area of ​​the area to be cured, at least some of the light-emitting units in the light-emitting element are controlled to emit light to illuminate the target area.

[0011] Fourthly, embodiments of this application provide a 3D printing device, which includes a processor and a memory. The memory stores programs or instructions that can run on the processor, and when the programs or instructions are executed by the processor, they implement the steps of the method as described in the first aspect.

[0012] Fifthly, embodiments of this application provide a readable storage medium on which a program or instructions are stored, which, when executed by a processor, implement the steps of the method as described in the first aspect.

[0013] Sixthly, embodiments of this application provide a method for manufacturing a light source assembly, the method being used to manufacture the light source assembly as described in the first aspect, the method comprising:

[0014] Provide a base;

[0015] At least one light-emitting element is disposed on the substrate; the light-emitting element includes: at least two light-emitting rows, the at least two light-emitting rows are arranged along a first direction, and adjacent two light-emitting rows are not on the same straight line, the first direction being perpendicular to the movement direction of the light source assembly during printing;

[0016] The substrate and at least one of the light-emitting elements are encapsulated to obtain the light source assembly.

[0017] In this embodiment, the light source assembly includes at least one light-emitting element, and each light-emitting element includes at least two light-emitting rows. For any light-emitting element, at least two light-emitting rows are arranged along a first direction, and adjacent light-emitting rows are not on the same straight line, that is, adjacent light-emitting rows are staggered in the first direction. In this embodiment, the staggered arrangement of two adjacent light-emitting rows in the light-emitting element, instead of splicing them together to obtain a long linear light source, avoids the problem of poor printing effect caused by the splicing gap not meeting the splicing accuracy requirements, reduces the limitation on the edge size between individual light-emitting rows, and improves printing precision.

[0018] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0019] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0020] Figure 1 A schematic diagram of the structure of a long linear light source in the related technology is shown;

[0021] Figure 2 One of the schematic diagrams illustrating an embodiment of this application shows that two adjacent light-emitting rows do not overlap in a first direction;

[0022] Figure 3 This illustration shows an embodiment of the present application where two adjacent light-emitting rows do not overlap in the first direction. Figure 2 ;

[0023] Figure 4 One of the schematic diagrams showing the overlapping projection portions of two adjacent light-emitting rows in a first direction according to an embodiment of this application is illustrated.

[0024] Figure 5 This is a second schematic diagram showing the overlapping projection portions of two adjacent light-emitting rows in the first direction, according to an embodiment of this application.

[0025] Figure 6 A schematic diagram of a light source assembly according to an embodiment of this application is shown, comprising at least two light-emitting elements;

[0026] Figure 7 This is a second schematic diagram showing a light source assembly comprising at least two light-emitting elements according to an embodiment of this application;

[0027] Figure 8 This is shown as a third schematic diagram of a light source assembly comprising at least two light-emitting elements according to an embodiment of this application;

[0028] Figure 9 This fourth illustration shows a light source assembly comprising at least two light-emitting elements according to an embodiment of this application;

[0029] Figure 10 This illustration shows one of the schematic diagrams showing the aligned arrangement of light-emitting units in light-emitting rows corresponding to different positions in different light-emitting elements of this application.

[0030] Figure 11 This is a second schematic diagram showing the aligned arrangement of light-emitting units in light-emitting rows corresponding to different positions in embodiments of this application;

[0031] Figure 12 This is one of the schematic diagrams showing the overlapping projection portions of the light-emitting units in the first direction of the light-emitting rows corresponding to different positions in different light-emitting elements of this application;

[0032] Figure 13 This is a second schematic diagram showing the overlapping projection portions of the light-emitting units in the first direction of the light-emitting rows corresponding to different positions in different light-emitting elements of this application.

[0033] Figure 14 This is a third schematic diagram showing the overlapping projection portions of two adjacent light-emitting rows in the first direction, according to an embodiment of this application.

[0034] Figure 15 A flowchart illustrating the exposure control method according to an embodiment of this application is shown;

[0035] Figure 16 Schematic diagrams of fully overlapping and partially overlapping light-emitting units according to embodiments of this application are shown;

[0036] Figure 17 A schematic flowchart illustrating a method for manufacturing a light source component according to an embodiment of this application is shown. Detailed Implementation

[0037] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0038] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0039] The light source components and related devices and methods provided in this application will be described below with reference to the accompanying drawings, through specific embodiments and application scenarios. In particular, the light source components, exposure control methods, 3D printing equipment, readable storage media, and manufacturing methods of the light source components will be described in detail. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0040] This application provides a light source assembly for use in a 3D printing device, the light source assembly comprising:

[0041] At least one light-emitting element; the light-emitting element includes:

[0042] At least two light-emitting rows are arranged along a first direction, and adjacent light-emitting rows are not on the same straight line. The first direction is perpendicular to the direction of movement of the light source assembly during printing.

[0043] In this embodiment, the light source assembly includes at least one light-emitting element, and each light-emitting element includes at least two light-emitting rows, which are also chips, and can be micro LED chips. For any light-emitting element, at least two light-emitting rows are arranged along a first direction, and adjacent light-emitting rows are not on the same straight line, that is, adjacent light-emitting rows are staggered in the first direction. The first direction is perpendicular to the direction of movement of the light source assembly during printing. If the direction of movement of the light source assembly during printing is the y-direction, then the first direction is the x-direction. The y-direction and the x-direction are perpendicular.

[0044] For example, such as Figure 2 and Figure 3 As shown, for any light-emitting element 100, there are light-emitting rows 101, 102, 103 and 104 arranged along the first direction. Among the light-emitting rows 101, 102, 103 and 104, two adjacent light-emitting rows are not on the same straight line.

[0045] During printing, the system reads the data corresponding to the target area to be cured for each illuminated row and controls the illumination of the illuminated row to achieve precise curing. For example, if illuminated rows 101 and 103 are pixels 0-99 and 200-299 respectively, then the corresponding data for pixels 0-99 is read into illuminated row 101, and the corresponding data for pixels 200-299 is read into illuminated row 103, thus achieving printing.

[0046] In this embodiment, two adjacent light-emitting rows in the light-emitting element are staggered instead of being spliced ​​together to obtain a long linear light source. This avoids the problem of poor printing effect caused by the splicing gap not meeting the splicing accuracy requirements, reduces the limitation on the edge size between individual light-emitting rows, and improves the printing precision.

[0047] In one embodiment of this application, each light-emitting row includes at least one light-emitting unit, such as one, two, or more light-emitting units;

[0048] The number of light-emitting units in different light-emitting rows of the light-emitting component may be the same or different.

[0049] In this embodiment, each light-emitting row includes at least two light-emitting units. In one embodiment, the number of light-emitting units included in a light-emitting row can be between 10 and 2000.

[0050] To facilitate print control and light source assembly manufacturing, the number of light-emitting units in different rows of a single light-emitting component can be the same. However, to adapt to different printing scenarios, the number of light-emitting units in different rows of a single light-emitting component can also vary. The number of light-emitting units in different rows can be set according to actual printing needs.

[0051] In one embodiment of this application, the number of light-emitting rows is n. When n is greater than or equal to 3,

[0052] n rows of light-emitting elements are arranged alternately back and forth in the direction of movement of the light source component; or,

[0053] The n light-emitting rows are arranged in a stepped pattern along the direction of movement of the light source component.

[0054] In this embodiment, when the number of light-emitting rows in a light-emitting element is n, and n is greater than or equal to 3, the n light-emitting rows can be arranged alternately back and forth in the moving direction of the light source assembly, specifically as follows: Figure 2 As shown, it can also be arranged in a stepped pattern, as specifically... Figure 3 As shown.

[0055] In this embodiment, the multiple light-emitting rows included in a single light-emitting element can be arranged in various ways, offering high flexibility to meet the needs of different printing scenarios. The n light-emitting rows are arranged alternately back and forth in the direction of movement of the light source assembly, which can reduce the overall space occupied by the light source assembly and improve space utilization.

[0056] In one embodiment of this application, the projections of two adjacent light-emitting rows in the first direction do not overlap; or, the projections of two adjacent light-emitting rows in the first direction partially overlap.

[0057] In one embodiment, the projections of two adjacent light-emitting rows do not overlap in the first direction; that is, two adjacent light-emitting rows are not offset in the direction of movement of the light source assembly, and the end of the preceding light-emitting row and the beginning of the following light-emitting row are not offset in the direction of movement. For example, as... Figure 2 and Figure 3 As shown, there is no overlap in the projections of light-emitting rows 101 and 102, 102 and 103, and 103 and 104 in the first direction. This arrangement avoids overexposure caused by overlapping light-emitting units, resulting in more uniform light emitted by the light-emitting element.

[0058] In another embodiment, to avoid the problem of missing light emission between adjacent light-emitting rows, the projected portions of two adjacent light-emitting rows are arranged to overlap in the first direction; that is, the projected portions of two adjacent light-emitting rows overlap in the first direction. For example, as... Figure 4 and Figure 5As shown, there is partial overlap in the projections of light-emitting rows 101 and 102, 102 and 103, and 103 and 104 in the first direction. This arrangement improves the exposure quality of the area between adjacent light-emitting rows.

[0059] In one embodiment of this application, when the projection portions of two adjacent light-emitting rows overlap in the first direction, the amount of overlap of the projections of the two adjacent light-emitting rows in the first direction is a preset number of light-emitting units, which is greater than 0 and less than 2.

[0060] In this embodiment, the overlap of the projections of two adjacent light-emitting rows in the first direction is a preset number of light-emitting units. The overlap can be controlled to be less than two light-emitting units. For example, two adjacent light-emitting rows overlap by 0.2, 0.5, 1, 1.3, or 1.5 light-emitting units in the first direction. By setting a suitable overlap between two adjacent light-emitting rows in the first direction, excessive overlap leading to overexposure of a large area and insufficient overlap leading to light emission loss of a large area are avoided, thereby ensuring exposure quality.

[0061] Optionally, each light-emitting row includes one light-emitting unit, and the projection portions of two adjacent light-emitting rows overlap in the first direction, with the overlap amount being greater than 0 and less than 1. See also... Figure 14 The light source assembly includes a light-emitting element, which comprises multiple light-emitting rows. Each light-emitting row includes a light-emitting unit. The projection portions of adjacent light-emitting rows overlap in a first direction, with the overlap amount being greater than 0 and less than 1. The structure of the light-emitting unit in this application allows for an appropriate increase in the spacing between the light-emitting units, while the projection portions of other light-emitting units in another row partially overlap, achieving resolution without reducing or increasing while ensuring process feasibility. Furthermore, if the process improves in the future and the required resolution can be achieved, this structure can be used to further improve the resolution.

[0062] In one embodiment of this application, when the number of at least one light-emitting element is greater than or equal to 2, at least two light-emitting elements are arranged along the moving direction of the light source assembly.

[0063] In this embodiment, the light source assembly may include two or more light-emitting elements, each light-emitting element including at least two light-emitting rows, for example, such as Figures 6 to 9 As shown, the light source assembly may include two light-emitting elements, a first light-emitting element 200 and a second light-emitting element 300.

[0064] A light source assembly includes at least two light-emitting elements, which can be controlled to emit light simultaneously during the scanning process to achieve exposure over a larger area and improve exposure efficiency.

[0065] Furthermore, at least two light-emitting elements enable at least two exposures of the same area to be cured during the scanning process, i.e., longer exposure times, to meet the energy requirements for curing. For example, for one area, the first light-emitting element 200 performs the first exposure, and the second light-emitting element 300 performs the second exposure, improving the exposure effect. In particular, performing at least two exposures for the edge positions of the area to be cured ensures the exposure effect at the edge positions.

[0066] In one embodiment of this application, the distance between two adjacent light-emitting elements is greater than 20 micrometers and less than 5 millimeters;

[0067] In the same light-emitting element, the distance between two adjacent light-emitting rows in the direction of movement of the light source assembly is greater than 20 micrometers and less than 5 millimeters.

[0068] In this embodiment, the light source assembly includes at least two light-emitting elements, and the distance between each adjacent light-emitting element is equal; within the same light-emitting element, the distance between each adjacent light-emitting row is equal.

[0069] The distance between two adjacent light-emitting elements is set to be greater than 20 micrometers and less than 5 millimeters. Within the same light-emitting element, the distance between two adjacent light-emitting rows in the direction of movement of the light source assembly is also set to be greater than 20 micrometers and less than 5 millimeters. This configuration makes the light-emitting elements and light-emitting rows within the light source assembly more compact, resulting in a smaller overall size. There are no areas of insufficient light between the light-emitting elements.

[0070] In one embodiment of this application, for any first light-emitting row in the first light-emitting element and a second light-emitting row adjacent to the first light-emitting row, and for a third light-emitting row in the second light-emitting element adjacent to the first light-emitting element that corresponds to the position of the first light-emitting row in the moving direction, the second light-emitting row and the third light-emitting row are on the same straight line;

[0071] For any first light-emitting row in the first light-emitting element and the second light-emitting row adjacent to the first light-emitting row, and for the fourth light-emitting row in the second light-emitting element adjacent to the first light-emitting element that corresponds to the position of the second light-emitting row in the moving direction, the first light-emitting row and the fourth light-emitting row are on the same straight line.

[0072] In this embodiment, such as Figures 6 to 9 As shown, the light source assembly includes a first light-emitting element 200 and a second light-emitting element 300 adjacent to the first light-emitting element 200.

[0073] In one case, such as Figure 6 and Figure 7As shown, the first light-emitting element 200 includes a first light-emitting row 201 and an adjacent second light-emitting row 202, and the second light-emitting element 300 includes a third light-emitting row 301. In the moving direction of the light source assembly, the third light-emitting row 301 corresponds to the position of the first light-emitting row 201. For example, the first light-emitting row 201 is the first light-emitting row of the first light-emitting element 200, and the third light-emitting row 301 is the first light-emitting row of the second light-emitting element 300.

[0074] Regarding the positional relationship between the second light-emitting row 202 and the third light-emitting row 301, the second light-emitting row 202 and the third light-emitting row 301 are limited to being on the same straight line.

[0075] In another case, such as Figure 8 and Figure 9 As shown, the first light-emitting element 200 includes a first light-emitting row 201 and an adjacent second light-emitting row 202, and the second light-emitting element 300 includes a fourth light-emitting row 302. In the moving direction of the light source assembly, the fourth light-emitting row 302 corresponds to the second light-emitting row 202. For example, the second light-emitting row 202 is the second light-emitting row of the first light-emitting element 200, and the fourth light-emitting row 302 is the second light-emitting row of the second light-emitting element 300.

[0076] Regarding the positional relationship between the first light-emitting row 201 and the fourth light-emitting row 302, the first light-emitting row 201 and the fourth light-emitting row 302 are limited to being on the same straight line.

[0077] It should be noted that in related technologies, multiple chips of a single light-emitting element are spliced ​​together to form a long linear light source. Adjacent chips may experience physical interference, resulting in gaps between the splicing points. However, in this embodiment, the light-emitting rows of different light-emitting elements in the first direction are aligned in a straight line. "In a straight line" means aligned in the first direction, not that two consecutive light-emitting rows are "spliced ​​together." The figure only shows an example of a straight line.

[0078] In this embodiment, the light-emitting rows of different light-emitting elements are arranged on a straight line in the first direction, so that the light-emitting rows are aligned in the first direction, thereby avoiding the alignment problem of the light-emitting rows.

[0079] In one embodiment of this application, in different light-emitting elements, the number of light-emitting units included in the light-emitting row corresponding to the position in the moving direction may be the same or different.

[0080] In this embodiment, for different light-emitting elements, the number of light-emitting units included in the light-emitting row corresponding to the position in the moving direction of the light source assembly can be the same or different.

[0081] For example, such as Figure 6 and Figure 7As shown, the light-emitting rows corresponding to the different positions of the light-emitting elements in the moving direction include: a first light-emitting row 201 and a third light-emitting row 301. The number of light-emitting units in the first light-emitting row 201 and the third light-emitting row 301 can be the same or different. For example, as... Figure 8 and Figure 9 As shown, the light-emitting rows corresponding to the different positions of the light-emitting elements in the moving direction include: the second light-emitting row 202 and the fourth light-emitting row 302. The number of light-emitting units in the second light-emitting row 202 and the fourth light-emitting row 302 can be the same or different.

[0082] In one embodiment of this application, in different light-emitting elements, the light-emitting units of the light-emitting rows corresponding to the positions are arranged in an aligned manner; or, in different light-emitting elements, the projection portions of the light-emitting units of the light-emitting rows corresponding to the positions overlap in a first direction, and the amount of overlap is the same as the amount of overlap between two adjacent light-emitting rows in the same light-emitting element in the moving direction.

[0083] In one embodiment, such as Figure 10 and Figure 11 As shown, in different light-emitting elements, the light-emitting units in the corresponding light-emitting rows can be arranged in an aligned manner. The projections of two adjacent light-emitting rows in the same light-emitting element do not overlap in the first direction. The number of light-emitting units in the corresponding light-emitting rows of different light-emitting elements is the same, and the light-emitting units in the corresponding light-emitting rows of different light-emitting elements are aligned. Figure 10 and Figure 11 The dashed lines in the diagram indicate alignment settings. Using at least two light-emitting elements enables simultaneous exposure of a larger area during scanning, and allows for at least two exposures of the same area to be cured during scanning, improving exposure efficiency. Furthermore, the aligned arrangement of light-emitting units within the corresponding rows of different light-emitting elements simplifies the setup process.

[0084] In another embodiment, such as Figure 12 and Figure 13As shown, in different light-emitting elements, the projection portions of the light-emitting units in the corresponding light-emitting rows overlap in the first direction. The projections of adjacent light-emitting rows in the same light-emitting element partially overlap in the first direction. The number of light-emitting units in the corresponding light-emitting rows of different light-emitting elements may be the same or different, and the projection portions of the light-emitting units in the corresponding light-emitting rows of different light-emitting elements overlap in the first direction. Using at least two light-emitting elements enables exposure of a larger area simultaneously during scanning, and allows for at least two exposures of the same area to be cured during scanning, improving the exposure effect. Furthermore, by having the projection portions of the light-emitting units in the corresponding light-emitting rows of different light-emitting elements overlap in the first direction, on the one hand, during the second exposure, the edge light-emitting units of the second light-emitting element are controlled to emit light. Through the edge light-emitting units of the second light-emitting element, the edge positions of the area to be cured are exposed a second time, improving exposure accuracy and ensuring the exposure effect at the edge positions. On the other hand, controlling all light-emitting units of the second light-emitting element to emit light during the second exposure can compensate for the gaps between the light-emitting units in the first light-emitting element, making the exposure more uniform.

[0085] This application provides a 3D printing device that includes the light source component of any of the above embodiments and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0086] This application provides an exposure control method applied to a 3D printing device, which includes a light source assembly as described in any of the above embodiments, such as... Figure 15 As shown, the method includes:

[0087] S1401 controls the light source assembly to move relative to the area to be cured and to perform scanning movement.

[0088] The light source assembly includes at least one light-emitting element, each light-emitting element includes at least two light-emitting rows, for any light-emitting element, the at least two light-emitting rows are arranged along a first direction, and adjacent light-emitting rows are not on the same straight line, that is, adjacent light-emitting rows are staggered from each other in the first direction.

[0089] During printing, the light source assembly is positioned relative to the area to be cured, and the area to be cured is scanned and moved.

[0090] S1402, during the scanning movement, when the light-emitting element of the light source assembly is opposite to the target area of ​​the area to be cured, at least some of the light-emitting units in the light-emitting element are controlled to emit light to illuminate the target area.

[0091] During the scanning and movement process, the system reads the data corresponding to the target area of ​​the area to be cured for each row of light emission and controls the light emission of the rows to achieve precise curing. In other words, within each light-emitting component, the number of light-emitting units that are lit can be selected according to requirements.

[0092] In this embodiment, two adjacent light-emitting rows in the light-emitting element are staggered instead of being spliced ​​together to obtain a long linear light source. This avoids the problem of poor printing effect caused by the splicing gap not meeting the splicing accuracy requirements, reduces the limitation on the edge size between individual light-emitting rows, and improves the printing precision.

[0093] In one embodiment of this application, the method further includes: when the projection portions of two adjacent light-emitting rows of the light-emitting element overlap in a first direction, controlling at least a portion of the overlapping light-emitting units in one light-emitting row to emit light, and at least a portion of the overlapping light-emitting units in the other light-emitting row not to emit light.

[0094] In this embodiment, to avoid missing light emission, the projections of two adjacent light-emitting rows in the first direction may partially overlap. However, when the projections of two adjacent light-emitting rows in the first direction partially overlap, for example... Figure 4 and Figure 5 As shown, if both emit light, it may lead to overexposure. Therefore, when the projection portions of two adjacent light-emitting rows overlap in the first direction, the emission of light from the two adjacent light-emitting rows can be flexibly controlled.

[0095] In one embodiment, for light source components where the projections of two adjacent light-emitting rows of a light-emitting element partially overlap in a first direction, it is possible to control at least some overlapping light-emitting units in one light-emitting row to emit light, while at least some overlapping light-emitting units in the other light-emitting row do not emit light, thus avoiding the problem of overexposure in the overlapping area.

[0096] In one embodiment of this application, controlling at least a portion of the overlapping light-emitting units in one light-emitting row to emit light, and at least a portion of the overlapping light-emitting units in the other light-emitting row not to emit light, includes:

[0097] Controlling the light-emitting units in two adjacent light-emitting rows to emit light when the light-emitting units in one row are completely overlapping and do not emit light, and controlling the light-emitting units in the other row that are not completely overlapping to emit light;

[0098] Among them, a fully overlapping light-emitting unit is one whose area within the overlapping range is greater than or equal to a first preset percentage, and a partially overlapping light-emitting unit is one whose area within the overlapping range is less than the first preset percentage.

[0099] In this embodiment, the overlapping light-emitting units include fully overlapping light-emitting units and partially overlapping light-emitting units. A fully overlapping light-emitting unit is defined as one whose area within the overlapping region is greater than or equal to a first preset percentage. That is, full overlap means that the projection of one light-emitting unit in the first direction at a% of the first direction overlaps with the projection of another light-emitting unit in the first direction, where a% is greater than or equal to the first preset percentage. Figure 16 The light-emitting units 401 and 501 are included. Incomplete overlap refers to a light-emitting unit whose area within the overlap range is less than a first preset percentage. That is, incomplete overlap means that the projection of one light-emitting unit in the first direction (b%) overlaps with the projection of another light-emitting unit in the first direction, where b% is less than the first preset percentage. Figure 16 The light-emitting unit 402 and light-emitting unit 502 are included.

[0100] After determining whether overlapping light-emitting units are fully overlapping, for incompletely overlapping light-emitting units, their emission is controlled; for fully overlapping light-emitting units, the fully overlapping light-emitting units in one light-emitting row are controlled to emit light, while the fully overlapping light-emitting units in the other light-emitting row are not emitted light. This method solves the problem of missing light emission between two light-emitting rows and also avoids overexposure.

[0101] In one embodiment of this application, the light source assembly includes at least two light-emitting elements; during scanning movement, when the light-emitting elements of the light source assembly are opposite to the target area of ​​the region to be cured, controlling at least a portion of the light-emitting units in the light-emitting elements to emit light to illuminate the target area includes:

[0102] At a first moment during the scanning movement of the light source assembly, at least some of the light-emitting units in the first light-emitting element emit light to illuminate the first target area of ​​the area to be cured; at a second moment during the scanning movement of the light source assembly, at least some of the light-emitting units in the second light-emitting element emit light to illuminate the second target area of ​​the area to be cured.

[0103] The area of ​​the intersection of the first target region and the second target region is greater than zero and smaller than the area of ​​the union of the first target region and the second target region.

[0104] In this embodiment, during the scanning process of the light source assembly, the area to be cured is exposed at least twice through at least two light-emitting elements included in the light source assembly.

[0105] During the scanning movement of the light source assembly, at least some of the light-emitting units in the first light-emitting row are controlled to emit light at a first moment to illuminate the area to be cured, and the area in the area to be cured at the first moment illuminated by at least some of the light-emitting units in the first light-emitting row is designated as the first target area. Furthermore, during the scanning movement of the light source assembly, at least some of the light-emitting units in the second light-emitting row are controlled to emit light at a second moment to illuminate the area to be cured, and the area in the area to be cured at the second moment illuminated by at least some of the light-emitting units in the second light-emitting row is designated as the second target area. It is understood that the light source assembly can be configured to illuminate while moving.

[0106] Wherein, the area of ​​the intersection region between the first target region and the second target region is greater than zero, that is, the region illuminated by at least some of the light-emitting units in the first light-emitting row at the first moment and the region illuminated by at least some of the light-emitting units in the second light-emitting row at the second moment have an intersection region, and this intersection region is exposed at least twice by at least some of the light-emitting units in the first light-emitting row at the first moment and by at least some of the light-emitting units in the second light-emitting row at the second moment.

[0107] Furthermore, the area of ​​the union of the first target area and the second target area is greater than the area of ​​the intersection of the first target area and the second target area. In other words, the first target area and the second target area do not completely overlap; there is a portion of overlapping area and a portion of non-overlapping area between them. This can also be understood as the first and second light-emitting rows being arranged in a way that their projections in the first direction overlap, i.e., in a non-aligned arrangement.

[0108] In this embodiment, during the scanning process of the light source device, the area to be cured on the screen is exposed at least twice by the light source device including at least two light-emitting rows. The area of ​​the intersection region between the target areas irradiated by the at least two exposures is greater than 0 and less than the area of ​​the union region between the target areas irradiated by the at least two exposures. In this way, flexible exposure of the area to be cured can be achieved by the flexible change of the union region of the two light-emitting rows. This can solve the problem of insufficient printing fineness caused by the limitation of the exposure size by the pixel size. That is, without changing the pixel size, it can have a more detailed exposure size, which can improve the printing quality.

[0109] In one embodiment of this application, at a first moment during the scanning movement of the light source assembly, at least a portion of the light-emitting units in the first light-emitting element emit light to illuminate the first target area of ​​the area to be cured, including:

[0110] At the first moment, all light-emitting units in the first light-emitting element corresponding to the area to be cured are controlled to emit light so as to illuminate the first target area of ​​the area to be cured;

[0111] At a second moment during the scanning movement of the light source assembly, at least a portion of the light-emitting units in the second light-emitting element emit light to illuminate the second target area of ​​the area to be cured, including:

[0112] At the second moment, all light-emitting units in the second light-emitting element corresponding to the area to be cured are controlled to emit light, or the light-emitting units in the second light-emitting element near the edge corresponding to the area to be cured are controlled to emit light, so as to illuminate the second target area of ​​the area to be cured.

[0113] In this embodiment, at a first moment, all light-emitting units in the first light-emitting element corresponding to the area to be cured are controlled to emit light, and at a second moment, all light-emitting units in the second light-emitting element corresponding to the area to be cured are controlled to emit light, thus ensuring the exposure effect of the area to be cured.

[0114] Alternatively, controlling all light-emitting units in the first light-emitting element corresponding to the area to be cured to emit light at the first moment, and controlling the light-emitting units in the second light-emitting element near the edge position corresponding to the area to be cured to emit light at the second moment, can solve the problem of insufficient exposure in the edge area.

[0115] In one embodiment of this application, the light-emitting unit near the edge position includes a target light-emitting unit located at the edge position of the area to be cured; or, the light-emitting unit near the edge position includes a target light-emitting unit located at the edge position of the area to be cured, and light-emitting units adjacent to or spaced apart from the target light-emitting unit.

[0116] In this embodiment, the light-emitting unit near the edge can be a light-emitting unit corresponding to the edge position of the area to be cured. For example, the light-emitting unit is exactly at the edge position of the area to be cured. By exposing the area through the light-emitting unit corresponding to the edge position of the area to be cured, precise control of the edge area can be achieved, ensuring the consistency of the edge curing effect and avoiding the problems of insufficient or excessive edge curing.

[0117] Alternatively, the light-emitting unit near the edge can be a light-emitting unit corresponding to the edge position of the area to be cured, and a light-emitting unit adjacent to the light-emitting unit corresponding to the edge position of the area to be cured. The exposure of the adjacent light-emitting units can compensate for the insufficient exposure of the edge light-emitting units. Through the superposition effect of the light-emitting units at the edge position and their adjacent light-emitting units, the curing effect of the edge area is enhanced.

[0118] Alternatively, the light-emitting unit near the edge can be a light-emitting unit corresponding to the edge position of the area to be cured, and light-emitting units spaced apart from the light-emitting unit corresponding to the edge position of the area to be cured. Compared with the exposure of the light-emitting unit at the edge position and its adjacent light-emitting units, using the light-emitting unit at the edge position and its spaced light-emitting units can reduce the excessive superposition of light intensity in the edge region and avoid the problem of over-curing caused by this.

[0119] In this embodiment of the application, by setting different light-emitting units at the edge of the area to be cured, the flexibility and accuracy of exposure can be improved.

[0120] This application also provides a 3D printing device, which includes a processor and a memory. The memory stores a program or instructions that can run on the processor. When the program or instructions are executed by the processor, they implement the various steps of the above-described exposure control method embodiments and achieve the same technical effect. To avoid repetition, they will not be described again here.

[0121] Memory can be used to store software programs and various data. Memory can primarily include a first storage area for storing programs or instructions and a second storage area for storing data. The first storage area can store the operating system, application programs or instructions required for at least one function (such as sound playback, image playback, etc.). Furthermore, memory can include volatile memory or non-volatile memory, or both. Non-volatile memory can be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. Volatile memory can be random access memory (RAM), static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDRSDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous linked dynamic random access memory (SLDRAM), and direct memory bus RAM (DRRAM). The memory in the embodiments of this application includes, but is not limited to, these and any other suitable types of memory.

[0122] The processor may include one or more processing units; optionally, the processor integrates an application processor and a modem processor, wherein the application processor mainly handles operations related to the operating system, user interface, and applications, while the modem processor mainly handles wireless communication signals, such as a baseband processor. It is understood that the aforementioned modem processor may also not be integrated into the processor.

[0123] This application also provides a readable storage medium storing a program or instructions. When the program or instructions are executed by a processor, they implement the various processes of the above-described exposure control method embodiments and achieve the same technical effect. To avoid repetition, they will not be described again here.

[0124] This application also provides a method for manufacturing a light source assembly, which is used to manufacture a light source assembly as described in any of the above embodiments, such as... Figure 17 As shown, the method includes:

[0125] S1601 provides a substrate;

[0126] S1602, at least one light-emitting element is disposed on the substrate; the light-emitting element includes: at least two light-emitting rows, the at least two light-emitting rows are arranged along a first direction, and adjacent light-emitting rows are not on the same straight line, the first direction is perpendicular to the movement direction of the light source assembly during printing;

[0127] S1603, encapsulate the substrate and at least one light-emitting element to obtain a light source assembly.

[0128] In this embodiment, at least one light-emitting element is disposed on a substrate, and each light-emitting element includes at least two light-emitting rows. For any light-emitting element, at least two light-emitting rows are arranged along a first direction, and adjacent light-emitting rows are not on the same straight line, that is, adjacent light-emitting rows are staggered from each other in the first direction. The substrate and at least one light-emitting element are encapsulated to obtain a light source assembly.

[0129] In this embodiment of the application, a light source assembly is manufactured, which includes at least one light-emitting element. Two adjacent light-emitting rows in the light-emitting element are staggered instead of being spliced ​​together to obtain a long linear light source. This avoids the problem of poor printing effect caused by the splicing gap not meeting the splicing accuracy requirements, reduces the limitation on the edge size between individual light-emitting rows, and improves the printing precision.

[0130] This application also provides the following embodiments:

[0131] Example 1: A light source assembly applied to a 3D printing device, the light source assembly comprising:

[0132] At least one light-emitting element; the light-emitting element includes:

[0133] At least two light-emitting rows are arranged along a first direction, and adjacent light-emitting rows are not on the same straight line. The first direction is perpendicular to the direction of movement of the light source assembly during printing.

[0134] Example 2, based on Example 1, each of the light-emitting rows includes at least two light-emitting units;

[0135] The number of light-emitting units included in different light-emitting rows of the light-emitting element may be the same or different;

[0136] The number of luminous rows is n. When n is greater than or equal to 3...

[0137] The n light-emitting rows are arranged alternately back and forth in the direction of movement of the light source assembly, or the n light-emitting rows are arranged in a stepped manner in the direction of movement of the light source assembly.

[0138] Example 3, based on Example 1, shows that the projections of two adjacent light-emitting rows in the first direction do not overlap, or that the projections of two adjacent light-emitting rows in the first direction partially overlap.

[0139] If the projections of two adjacent light-emitting rows in the first direction overlap, the amount of overlap of the projections of the two adjacent light-emitting rows in the first direction is a preset number of light-emitting units, wherein the preset number is greater than 0 and less than 2.

[0140] Example 4, based on Example 3, each of the light-emitting rows includes a light-emitting unit, and the projection portions of two adjacent light-emitting rows overlap in the first direction, with the overlap amount being greater than 0 and less than 1.

[0141] Example 5: Based on Example 1, when the number of at least one light-emitting element is greater than or equal to 2, at least two of the light-emitting elements are arranged along the moving direction of the light source assembly.

[0142] Example 6, based on Example 5, the distance between two adjacent light-emitting elements is greater than 20 micrometers and less than 5 millimeters;

[0143] In the same light-emitting element, the distance between two adjacent light-emitting rows in the direction of movement of the light source assembly is greater than 20 micrometers and less than 5 millimeters;

[0144] In different light-emitting elements, the number of light-emitting units included in the light-emitting row corresponding to the position in the moving direction may be the same or different;

[0145] In different light-emitting elements, the light-emitting units in the corresponding light-emitting rows are arranged in an aligned manner; or,

[0146] In different light-emitting elements, the light-emitting units of the light-emitting row corresponding to the position overlap in the projection portion in the first direction, and the amount of overlap is the same as the amount of overlap between two adjacent light-emitting rows in the same light-emitting element in the moving direction.

[0147] Example 7, based on Example 5, for any first light-emitting row in the first light-emitting element and a second light-emitting row adjacent to the first light-emitting row, and a third light-emitting row in the second light-emitting element adjacent to the first light-emitting element that corresponds to the position of the first light-emitting row in the moving direction, the second light-emitting row and the third light-emitting row are on the same straight line;

[0148] For any first light-emitting row in the first light-emitting element and a second light-emitting row adjacent to the first light-emitting row, and for a fourth light-emitting row in the second light-emitting element adjacent to the first light-emitting element that corresponds to the position of the second light-emitting row in the moving direction, the first light-emitting row and the fourth light-emitting row are on the same straight line.

[0149] Example 8: A 3D printing device, comprising:

[0150] The light source assembly as described in any one of Examples 1 to 7.

[0151] Example 9: An exposure control method applied to a 3D printing device, the 3D printing device including a light source assembly as described in any one of Examples 1 to 7, the method comprising:

[0152] The light source assembly is controlled to move relative to the area to be cured and to perform scanning movement.

[0153] During the scanning movement, when the light-emitting element of the light source assembly is opposite to the target area of ​​the area to be cured, at least some of the light-emitting units in the light-emitting element are controlled to emit light to illuminate the target area.

[0154] Example 10, based on Example 9, further includes:

[0155] When the projection portions of two adjacent light-emitting rows of the light-emitting element overlap in the first direction, at least a portion of the overlapping light-emitting units in one of the two adjacent light-emitting rows emit light, while at least a portion of the overlapping light-emitting units in the other light-emitting row do not emit light.

[0156] The control of at least a portion of the overlapping light-emitting units in one of two adjacent light-emitting rows to emit light, and at least a portion of the overlapping light-emitting units in the other light-emitting row not to emit light, includes:

[0157] In two adjacent rows of light emission, the light emission units that are completely overlapping in one row emit light, while the light emission units that are completely overlapping in the other row do not emit light, and the light emission units that are not completely overlapping in both rows emit light.

[0158] Wherein, the completely overlapping light-emitting units are those whose area within the overlapping range is greater than or equal to a first preset percentage, and the incompletely overlapping light-emitting units are those whose area within the overlapping range is less than the first preset percentage.

[0159] Example 11, based on Example 9, the light source assembly includes at least two light-emitting elements; during the scanning movement, when the light-emitting elements of the light source assembly are opposite to the target area of ​​the area to be cured, controlling at least a portion of the light-emitting units in the light-emitting elements to emit light to illuminate the target area includes:

[0160] At a first moment during the scanning movement of the light source assembly, at least a portion of the light-emitting units in the first light-emitting element emit light to illuminate the first target area of ​​the area to be cured; at a second moment during the scanning movement of the light source assembly, at least a portion of the light-emitting units in the second light-emitting element emit light to illuminate the second target area of ​​the area to be cured.

[0161] Wherein, the area of ​​the intersection region of the first target region and the second target region is greater than zero, and smaller than the area of ​​the union region of the first target region and the second target region;

[0162] At a first moment during the scanning movement of the light source assembly, at least a portion of the light-emitting units in the first light-emitting element emit light to illuminate the first target area of ​​the area to be cured, including:

[0163] At the first moment, all light-emitting units in the first light-emitting element corresponding to the area to be cured are controlled to emit light so as to illuminate the first target area of ​​the area to be cured;

[0164] At a second moment during the scanning movement of the light source assembly, at least a portion of the light-emitting units in the second light-emitting element emit light to illuminate the second target area of ​​the area to be cured, including:

[0165] At the second moment, all light-emitting units in the second light-emitting element corresponding to the area to be cured are controlled to emit light, or the light-emitting units in the second light-emitting element near the edge of the area to be cured are controlled to emit light, so as to illuminate the second target area of ​​the area to be cured.

[0166] The light-emitting unit near the edge position includes a target light-emitting unit located at the edge position of the area to be cured; or, the light-emitting unit near the edge position includes a target light-emitting unit located at the edge position of the area to be cured, and light-emitting units adjacent to or spaced apart from the target light-emitting unit.

[0167] Example 12: A 3D printing device includes a processor and a memory, the memory storing a program or instructions that run on the processor, the program or instructions being executed by the processor to implement the steps of the exposure control method as described in any one of Examples 9 to 11.

[0168] Example 13: A readable storage medium having a program or instructions stored thereon, which, when executed by a processor, implements the steps of the exposure control method as described in any one of Examples 9 to 11.

[0169] Example 14: A method for manufacturing a light source assembly, the method being used to manufacture a light source assembly as described in any one of Examples 1 to 7, the method comprising:

[0170] Provide a base;

[0171] At least one light-emitting element is disposed on the substrate; the light-emitting element includes: at least two light-emitting rows, the at least two light-emitting rows are arranged along a first direction, and adjacent two light-emitting rows are not on the same straight line, the first direction being perpendicular to the movement direction of the light source assembly during printing;

[0172] The substrate and at least one of the light-emitting elements are encapsulated to obtain the light source assembly.

[0173] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0174] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A light source assembly, characterized in that, The light source assembly, used in 3D printing equipment, includes: At least one light-emitting element; the light-emitting element includes: At least two light-emitting rows are arranged along a first direction, and adjacent light-emitting rows are not on the same straight line. The first direction is perpendicular to the direction of movement of the light source assembly during printing.

2. The light source assembly according to claim 1, characterized in that, Each of the light-emitting rows includes at least one light-emitting unit; The number of light-emitting units included in different light-emitting rows of the light-emitting element may be the same or different; The number of luminous rows is n. When n is greater than or equal to 3... The n light-emitting rows are arranged alternately back and forth in the direction of movement of the light source assembly, or... The n light-emitting rows are arranged in a stepped pattern in the direction of movement of the light source assembly.

3. The light source assembly according to claim 1, characterized in that, The projections of two adjacent light-emitting rows in the first direction do not overlap, or, The projection portions of two adjacent light-emitting rows overlap in the first direction; If the projections of two adjacent light-emitting rows in the first direction overlap, the amount of overlap of the projections of the two adjacent light-emitting rows in the first direction is a preset number of light-emitting units, wherein the preset number is greater than 0 and less than 2.

4. The light source assembly according to claim 3, characterized in that, Each of the light-emitting rows includes a light-emitting unit, and the projection portions of two adjacent light-emitting rows overlap in the first direction, with the overlap amount being greater than 0 and less than 1.

5. The light source assembly according to claim 1, characterized in that, When the number of at least one light-emitting element is greater than or equal to 2, at least two of the light-emitting elements are arranged along the moving direction of the light source assembly; The distance between two adjacent light-emitting elements is greater than 20 micrometers and less than 5 millimeters; In the same light-emitting element, the distance between two adjacent light-emitting rows in the direction of movement of the light source assembly is greater than 20 micrometers and less than 5 millimeters; In different light-emitting elements, the number of light-emitting units included in the light-emitting row corresponding to the position in the moving direction may be the same or different; In different light-emitting elements, the light-emitting units in the light-emitting row corresponding to the position are arranged in an aligned manner; or, In different light-emitting elements, the light-emitting units of the light-emitting row corresponding to the position overlap in the projection portion in the first direction, and the amount of overlap is the same as the amount of overlap between two adjacent light-emitting rows in the same light-emitting element in the moving direction; For any first light-emitting row in the first light-emitting element and a second light-emitting row adjacent to the first light-emitting row, and for a third light-emitting row in the second light-emitting element adjacent to the first light-emitting element that corresponds to the position of the first light-emitting row in the moving direction, the second light-emitting row and the third light-emitting row are on the same straight line; For any first light-emitting row in the first light-emitting element and a second light-emitting row adjacent to the first light-emitting row, and for a fourth light-emitting row in the second light-emitting element adjacent to the first light-emitting element that corresponds to the position of the second light-emitting row in the moving direction, the first light-emitting row and the fourth light-emitting row are on the same straight line.

6. A 3D printing device, characterized in that, include: The light source assembly as described in any one of claims 1 to 5.

7. An exposure control method, characterized in that, Applied to a 3D printing device, the 3D printing device including a light source assembly as described in any one of claims 1 to 5, the method comprising: The light source assembly is controlled to move relative to the area to be cured and to perform scanning movement. During the scanning movement, when the light-emitting element of the light source assembly is opposite to the target area of ​​the area to be cured, at least some of the light-emitting units in the light-emitting element are controlled to emit light to illuminate the target area.

8. The method according to claim 7, characterized in that, The method further includes: When the projection portions of two adjacent light-emitting rows of the light-emitting element overlap in the first direction, at least a portion of the overlapping light-emitting units in one of the two adjacent light-emitting rows emit light, while at least a portion of the overlapping light-emitting units in the other light-emitting row do not emit light. The control of at least a portion of the overlapping light-emitting units in one of two adjacent light-emitting rows to emit light, and at least a portion of the overlapping light-emitting units in the other light-emitting row not to emit light, includes: In two adjacent rows of light emission, the light emission units that are completely overlapping in one row emit light, while the light emission units that are completely overlapping in the other row do not emit light, and the light emission units that are not completely overlapping in both rows emit light. Wherein, the completely overlapping light-emitting units are those whose area within the overlapping range is greater than or equal to a first preset percentage, and the incompletely overlapping light-emitting units are those whose area within the overlapping range is less than the first preset percentage; The light source assembly includes at least two light-emitting elements; during the scanning movement, when the light-emitting elements of the light source assembly are opposite to the target area of ​​the area to be cured, controlling at least a portion of the light-emitting units in the light-emitting elements to emit light to illuminate the target area includes: At a first moment during the scanning movement of the light source assembly, at least a portion of the light-emitting units in the first light-emitting element emit light to illuminate the first target area of ​​the area to be cured; at a second moment during the scanning movement of the light source assembly, at least a portion of the light-emitting units in the second light-emitting element emit light to illuminate the second target area of ​​the area to be cured. Wherein, the area of ​​the intersection region of the first target region and the second target region is greater than zero, and smaller than the area of ​​the union region of the first target region and the second target region; At a first moment during the scanning movement of the light source assembly, at least a portion of the light-emitting units in the first light-emitting element emit light to illuminate the first target area of ​​the area to be cured, including: At the first moment, all light-emitting units in the first light-emitting element corresponding to the area to be cured are controlled to emit light so as to illuminate the first target area of ​​the area to be cured; At a second moment during the scanning movement of the light source assembly, at least a portion of the light-emitting units in the second light-emitting element emit light to illuminate the second target area of ​​the area to be cured, including: At the second moment, all light-emitting units in the second light-emitting element corresponding to the area to be cured are controlled to emit light, or the light-emitting units in the second light-emitting element near the edge of the area to be cured are controlled to emit light, so as to illuminate the second target area of ​​the area to be cured. The light-emitting unit near the edge position includes a target light-emitting unit located at the edge position of the area to be cured; or, the light-emitting unit near the edge position includes a target light-emitting unit located at the edge position of the area to be cured, and light-emitting units adjacent to or spaced apart from the target light-emitting unit.

9. A 3D printing device, characterized in that, It includes a processor and a memory, the memory storing a program or instructions that run on the processor, the program or instructions being executed by the processor to implement the steps of the exposure control method as described in any one of claims 7 to 8.

10. A readable storage medium having a program or instructions stored thereon, characterized in that, When the program or instructions are executed by the processor, they implement the steps of the exposure control method as described in any one of claims 7 to 8.

11. A method for manufacturing a light source assembly, characterized in that, The method is used to manufacture a light source assembly as described in any one of claims 1 to 5, the method comprising: Provide a base; At least one light-emitting element is disposed on the substrate; the light-emitting element includes: at least two light-emitting rows, the at least two light-emitting rows are arranged along a first direction, and adjacent two light-emitting rows are not on the same straight line, the first direction being perpendicular to the movement direction of the light source assembly during printing; The substrate and at least one of the light-emitting elements are encapsulated to obtain the light source assembly.

Images