Photocuring pixel arrangement structure, photocuring module and printing equipment

Abstract

The invention discloses a photo-curing pixel arrangement structure, a photo-curing module and printing equipment, by setting a plurality of sub-pixels in different wave band ranges and performing special array arrangement on the plurality of sub-pixels, beam angles and curing effect differences of the plurality of sub-pixels in different wave band ranges are balanced, and the light-curing effect of the plurality of sub-pixels in different wave band ranges is improved. And the light coverage range of various sub-pixels can be better matched.

Description

Technical Field

[0001] The present invention belongs to the technical field of photocuring, and in particular relates to a photocuring pixel arrangement structure, a photocuring module and a printing device. Background Art

[0002] The existing printing devices have low curing efficiency and yellowing problems. The main reasons are that short wavelength (high energy) or high intensity ultraviolet light irradiation causes yellowing, long wavelength (low energy) or low intensity light irradiation, or shortening the curing time causes insufficient curing rate, resulting in smearing. The above problems are particularly obvious for multi-color and multi-material printing curing or multi-ink system printing curing.

[0003] Based on this, the current common solution is to change the ink formula. For example, use multiple or multiple functional groups to increase the curing speed or adaptability. However, this solution will undoubtedly increase the difficulty and cost of ink synthesis, and there are problems such as insufficient ink stability or short shelf life.

[0004] The information disclosed in this background technology section is only intended to enhance the understanding of the overall background of the invention and should not be regarded as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to a person skilled in the art. Summary of the invention

[0005] The object of the present invention is to provide a photocuring pixel arrangement structure, a photocuring module and a printing device, which can improve the photocuring effect and avoid problems such as yellowing.

[0006] In order to achieve the above object, a technical solution provided by a specific embodiment of the present invention is as follows:

[0007] A photocurable pixel arrangement structure includes a plurality of first-type sub-pixels, second-type sub-pixels and third-type sub-pixels distributed in an array;

[0008] in,

[0009] Two of the third type of sub-pixels aligned in the first direction and two of the third type of sub-pixels aligned in the second direction form a first virtual quadrilateral, the vertices of the first virtual quadrilateral are located at the centers of the third type of sub-pixels, and the first direction is perpendicular to the second direction;

[0010] In the first virtual quadrilateral, the number of the third type of sub-pixels is less than the number of the first type of sub-pixels, and the number of the third type of sub-pixels is less than the number of the second type of sub-pixels;

[0011] The wavelength ranges of the first type of sub-pixels are different from those of the second type of sub-pixels, and the wavelength ranges of the first type of sub-pixels are different from those of the third type of sub-pixels. At least the first type of sub-pixels emit light in the UVA band.

[0012] In one or more embodiments of the present invention, within the first virtual quadrilateral, the number of sub-pixels of the first type is less than the number of sub-pixels of the second type.

[0013] In one or more embodiments of the present invention, within the first virtual quadrilateral, the number ratio of the first type of sub-pixels, the second type of sub-pixels, and the third type of sub-pixels is 3:4:1.

[0014] In one or more embodiments of the present invention, the first virtual quadrilateral is a rhombus.

[0015] In one or more embodiments of the present invention, the shapes of the first type of sub-pixels, the second type of sub-pixels, and the third type of sub-pixels are all rhombus-shaped, and the diagonals of the first type of sub-pixels, the second type of sub-pixels, and the third type of sub-pixels are all parallel to the first direction and / or the second direction.

[0016] In one or more embodiments of the present invention, each of the first-type sub-pixel, the second-type sub-pixel, and the third-type sub-pixel can be controlled to light up independently.

[0017] In one or more embodiments of the present invention, the wavelength range of the first type of sub-pixels is 320nm-400nm, the wavelength range of the second type of sub-pixels is 200nm-280nm, the wavelength range of the third type of sub-pixels is 200nm-320nm, or the wavelength range of the third type of sub-pixels is 750nm-1100nm.

[0018] In one or more embodiments of the present invention, within the first virtual quadrilateral, along the first direction, one sub-pixel of the first type is arranged between adjacent sub-pixels of the third type;

[0019] Along the second direction, three first-type sub-pixels are arranged between adjacent third-type sub-pixels;

[0020] The first-type sub-pixel located in the middle is surrounded by four second-type sub-pixels.

[0021] A photocurable pixel arrangement structure includes a plurality of first-type sub-pixels, second-type sub-pixels and third-type sub-pixels distributed in an array;

[0022] in,

[0023] Two of the third type of sub-pixels aligned in the first direction and two of the third type of sub-pixels aligned in the second direction form a second virtual quadrilateral, the vertices of the second virtual quadrilateral are located at the centers of the third type of sub-pixels, and the first direction is perpendicular to the second direction;

[0024] In the second virtual quadrilateral, the number of the third type of sub-pixels is less than the number of the first type of sub-pixels, and the number of the third type of sub-pixels is less than the number of the second type of sub-pixels;

[0025] The wavelength ranges of the first type of sub-pixels are different from those of the second type of sub-pixels, and the wavelength ranges of the first type of sub-pixels are different from those of the third type of sub-pixels. At least the first type of sub-pixels emit light in the UVA band.

[0026] In one or more embodiments of the present invention, within the second virtual quadrilateral, the number of sub-pixels of the first type is equal to the number of sub-pixels of the second type.

[0027] In one or more embodiments of the present invention, within the second virtual quadrilateral, the number ratio of the first type of sub-pixels, the second type of sub-pixels, and the third type of sub-pixels is 4:4:1.

[0028] In one or more embodiments of the present invention, within the second virtual quadrilateral,

[0029] Along the side length direction, two second-type sub-pixels are arranged between adjacent third-type sub-pixels;

[0030] Along the first direction and / or the second direction, two first-type sub-pixels are arranged between adjacent third-type sub-pixels.

[0031] In one or more embodiments of the present invention, the shapes of the first type of sub-pixels, the second type of sub-pixels, and the third type of sub-pixels are all quadrilaterals;

[0032] The diagonals of the first type of sub-pixels, the second type of sub-pixels, and the third type of sub-pixels are all parallel to the first direction and / or the second direction.

[0033] In one or more embodiments of the present invention, the side lengths of the first type of sub-pixels are parallel to the side lengths of the corresponding second virtual quadrilaterals;

[0034] The side lengths of the second type of sub-pixels are all parallel to the side lengths of the corresponding second virtual quadrilaterals;

[0035] The side lengths of the third type of sub-pixels are parallel to the side lengths of the corresponding second virtual quadrilaterals.

[0036] In one or more embodiments of the present invention, the second virtual quadrilateral is a square.

[0037] In one or more embodiments of the present invention, the first type of sub-pixels, the second type of sub-pixels, and the third type of sub-pixels are all square in shape.

[0038] In one or more embodiments of the present invention, each of the first-type sub-pixel, the second-type sub-pixel, and the third-type sub-pixel can be controlled to light up independently.

[0039] In one or more embodiments of the present invention, the wavelength range of the first type of sub-pixels is 320nm-400nm, the wavelength range of the second type of sub-pixels is 200nm-280nm, the wavelength range of the third type of sub-pixels is 200nm-320nm, or the wavelength range of the third type of sub-pixels is 750nm-1100nm.

[0040] In one or more embodiments of the present invention, one of the first direction and the second direction is a horizontal direction, and the other is a vertical direction.

[0041] In one or more embodiments of the present invention, LEDs may be used as light sources.

[0042] A photocuring module comprises a substrate, on which the above-mentioned photocuring pixel arrangement structure is arranged.

[0043] A printing device comprises the above-mentioned light curing module.

[0044] Compared with the prior art, the photocuring pixel arrangement structure, photocuring module and printing device of the present invention, by setting multiple sub-pixels in different wavelength ranges, can avoid the curing problem caused by different cross-linking agent response effects on different inks when using the same light, and avoid the problem of partial color damage to different color inks when using the same light, thereby improving the photocuring effect and avoiding the yellowing problem.

[0045] The photocuring pixel arrangement structure, photocuring module and printing device of the present invention balance the differences in beam angles (light emitting angle and divergence degree) and curing effects of multiple sub-pixels in different wavelength ranges through a special array arrangement of the first type of sub-pixels, the second type of sub-pixels and the third type of sub-pixels, so as to better match the light coverage of each type of sub-pixel.

[0046] The photocuring pixel arrangement structure, photocuring module and printing device of the present invention accelerate the photocuring effect by setting the third type of sub-pixels (sub-pixels in the infrared wavelength range) to coordinate the first type of sub-pixels and the second type of sub-pixels. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0048] Figure 1 Schematic diagram of the photocurable pixel arrangement structure in Example 1 of the present invention;

[0049] Figure 2 for Figure 1 A schematic diagram of a first virtual quadrilateral in the light-cured pixel arrangement structure shown;

[0050] Figure 3 Schematic diagram of the photocurable pixel arrangement structure in Example 2 of the present invention;

[0051] Figure 4 for Figure 3 A schematic diagram of a second virtual quadrilateral in the photocurable pixel arrangement structure is shown. DETAILED DESCRIPTION

[0052] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0053] As mentioned in the background art, the light curing module of the existing printing device uses the same wavelength of light for indiscriminate irradiation, which may cause yellowing and slow curing rate to form a smear problem.

[0054] In order to solve the above technical problems, the present invention provides a photocuring pixel arrangement structure, a photocuring module and a printing device. By setting a plurality of sub-pixels in different wavelength ranges and arranging the plurality of sub-pixels in a special array, the beam angles (light emitting angles and divergence degrees) and curing effect differences of the plurality of sub-pixels in different wavelength ranges are balanced, so as to better match the light coverage range of each type of sub-pixel.

[0055] like Figure 1 As shown, the light-cured pixel arrangement structure in Embodiment 1 of the present invention includes a plurality of first-type sub-pixels 10, second-type sub-pixels 20, and third-type sub-pixels 30 distributed in an array. Each of the first-type sub-pixels 10, the second-type sub-pixels 20, and the third-type sub-pixels 30 can be controlled to light up independently.

[0056] The wavelength ranges of the first sub-pixel 10 and the second sub-pixel 20 are different, and the wavelength ranges of the first sub-pixel 10 and the third sub-pixel 20 are different. At least the first sub-pixel 10 emits light in the UVA band.

[0057] Preferably, the wavelength range of the first type of sub-pixel 10 is 320nm-400nm, the wavelength range of the second type of sub-pixel 20 is 200nm-280nm, the wavelength range of the third type of sub-pixel 30 is 200nm-320nm, or the wavelength range of the third type of sub-pixel 30 is 750nm-1100nm.

[0058] In the light-cured pixel arrangement structure formed by arranging the first type of sub-pixel 10, the second type of sub-pixel 20 and the third type of sub-pixel 30, two third type of sub-pixels 30 aligned in the first direction and two third type of sub-pixels 30 aligned in the second direction perpendicular to the first direction form a first virtual quadrilateral A, and the vertex of the first virtual quadrilateral A is located at the center of the third type of sub-pixel. One of the first direction and the second direction is a horizontal direction, and the other is a vertical direction.

[0059] In this embodiment, the alignment setting can be understood as being in a diagonal position in the formed first virtual quadrilateral A.

[0060] refer to Figure 2 As shown, within the first virtual quadrilateral A, the number of the third type of sub-pixels 30 is less than the number of the first type of sub-pixels 10, the number of the third type of sub-pixels 30 is less than the number of the second type of sub-pixels 20, and the number of the first type of sub-pixels 10 is less than the number of the second type of sub-pixels 20.

[0061] In a preferred embodiment, within the first virtual quadrilateral A, the number ratio of the first type of sub-pixels 10 , the second type of sub-pixels 20 , and the third type of sub-pixels 30 is 3:4:1.

[0062] For example, Figure 2 As shown, in the first virtual quadrilateral A, in the second direction, three first-type sub-pixels 10 are arranged between two third-type sub-pixels 30 arranged in alignment. All three first-type sub-pixels 10 are included in the first virtual quadrilateral A, so the number of first-type sub-pixels 10 is 3.

[0063] For ease of description, the three first-type sub-pixels 10 are defined herein as a first first-type sub-pixel 10a, a second first-type sub-pixel 10b, and a third first-type sub-pixel 10c. The second first-type sub-pixel 10b is located between the first first-type sub-pixel 10a and the third first-type sub-pixel 10c.

[0064] In the first direction, a first-type sub-pixel 10 is disposed between two aligned third-type sub-pixels 30 , and the second-type sub-pixel 10 is the second first-type sub-pixel 10 b mentioned above.

[0065] The two third-type sub-pixels 30 in the first direction are respectively provided with a second-type sub-pixel 20 whose center is located in the first virtual quadrilateral A between the first-type sub-pixel 10a, and a second-type sub-pixel 20 whose center is located in the first virtual quadrilateral A is also provided between the third-type sub-pixel 10c. The four second-type sub-pixels 20 are all partially contained in the first virtual quadrilateral A, and only a small part is separated outside the first virtual quadrilateral A. However, since the first virtual quadrilateral A is also divided to include a small part of the other four second-type sub-pixels 20 whose centers are located outside the first virtual quadrilateral A, as shown in FIG. Figure 2 The small part is the D part in the figure, and this small part is exactly equal to the part of the above-mentioned four second-type sub-pixels 20 separated outside the first virtual quadrilateral A. Therefore, it can be understood that within the first virtual quadrilateral A, four complete second-type sub-pixels 20 can be integrated. The number of the second-type sub-pixels 20 is 4.

[0066] That is, the second first-type sub-pixel 10 b located in the middle is surrounded by four second-type sub-pixels 20 .

[0067] Since the vertex of the first virtual quadrilateral A is located at the center of the third type of sub-pixel 30, only a portion of the four third type of sub-pixels 30 is contained in the first virtual quadrilateral A. However, since the sum of the four internal angles of the first virtual quadrilateral A is 360°, the portions of the different third type of sub-pixels 30 contained in the first virtual quadrilateral A can be integrated into a complete third type of sub-pixel 30, and the number of the third type of sub-pixels 30 is 1.

[0068] That is, within the first virtual quadrilateral A, the number ratio of the first type of sub-pixels 10 , the second type of sub-pixels 20 , and the third type of sub-pixels 30 is 3:4:1.

[0069] The setting of the quantity ratio of the above-mentioned first type sub-pixel 10, second type sub-pixel 20 and third type sub-pixel 30 can balance the differences in beam angles (light output angle and divergence) and curing effects of multiple sub-pixels in different wavelength ranges, and better match the light coverage of each type of sub-pixel.

[0070] In the light-cured pixel arrangement structure of the present invention, in any first virtual quadrilateral A formed with the center of the third sub-pixel 30 as the vertex, the number ratio of the first sub-pixel 10, the second sub-pixel 20 and the third sub-pixel 30 is 3:4:1. That is, it can be understood that, with the first virtual quadrilateral A as a light-emitting unit, the light-cured pixel arrangement structure of the present invention is composed of a plurality of light-emitting units arranged.

[0071] In a preferred embodiment, the first virtual quadrilateral A is a rhombus. Two relative internal angles of the first virtual quadrilateral A are both 60°, and the other two relative internal angles are both 120°. The shapes of the first type of sub-pixel 10, the second type of sub-pixel 20, and the third type of sub-pixel 30 are also rhombus-shaped, preferably square, and the diagonals of the first type of sub-pixel 10, the second type of sub-pixel 20, and the third type of sub-pixel 30 are all parallel to the first direction and / or the second direction.

[0072] It can be understood that the shapes of the first type of sub-pixel 10 , the second type of sub-pixel 20 , and the third type of sub-pixel 30 are also the center of a circle or other shapes.

[0073] like Figure 3 As shown, the light-cured pixel arrangement structure in Embodiment 2 of the present invention includes a plurality of first-type sub-pixels 10, second-type sub-pixels 20, and third-type sub-pixels 30 distributed in an array. Each of the first-type sub-pixels 10, the second-type sub-pixels 20, and the third-type sub-pixels 30 can be controlled to light up independently.

[0074] The wavelength ranges of the first sub-pixel 10 and the second sub-pixel 20 are different, and the wavelength ranges of the first sub-pixel 10 and the third sub-pixel 20 are different. At least the first sub-pixel 10 emits light in the UVA band.

[0075] Preferably, the wavelength range of the first type of sub-pixel 10 is 320nm-400nm, the wavelength range of the second type of sub-pixel 20 is 200nm-280nm, the wavelength range of the third type of sub-pixel 30 is 200nm-320nm, or the wavelength range of the third type of sub-pixel 30 is 750nm-1100nm.

[0076] LED can be selected as the light source.

[0077] In the light-cured pixel arrangement structure formed by arranging the first type of sub-pixel 10, the second type of sub-pixel 20 and the third type of sub-pixel 30, two third type of sub-pixels 30 aligned in the first direction and two third type of sub-pixels 30 aligned in the second direction perpendicular to the first direction form a second virtual quadrilateral B, and the vertex of the second virtual quadrilateral B is located at the center of the third type of sub-pixel. One of the first direction and the second direction is a horizontal direction, and the other is a vertical direction.

[0078] In this embodiment, the alignment setting can be understood as being in a diagonal position in the formed second virtual quadrilateral B.

[0079] refer to Figure 4 As shown, within the second virtual quadrilateral B, the number of the third type of sub-pixels 30 is less than the number of the first type of sub-pixels 10, the number of the third type of sub-pixels 30 is less than the number of the second type of sub-pixels 20, and the number of the first type of sub-pixels 10 is less than the number of the second type of sub-pixels 20.

[0080] In a preferred embodiment, within the second virtual quadrilateral B, the number ratio of the first type of sub-pixels 10 , the second type of sub-pixels 20 , and the third type of sub-pixels 30 is 4:4:1.

[0081] For example, Figure 4 As shown, in the second virtual quadrilateral B, in the second direction, two first-type sub-pixels 10 are arranged between two third-type sub-pixels 30 arranged in alignment. In the first direction, another two first-type sub-pixels 10 are arranged between two third-type sub-pixels 30 arranged in alignment. All four first-type sub-pixels 10 are contained in the second virtual quadrilateral B, so the number of first-type sub-pixels 10 is 4.

[0082] In the direction of the side length of the second virtual quadrilateral B, two second-type sub-pixels 20 are arranged between the two third-type sub-pixels 30 located at the end points. The centers of the second-type sub-pixels 20 are located on the side length of the second virtual quadrilateral B, that is, half of the second-type sub-pixels 20 are included in the second virtual quadrilateral B, so it can be understood that four complete second-type sub-pixels 20 can be integrated in the second virtual quadrilateral B, and the number of the second-type sub-pixels 20 is 4.

[0083] Since the vertices of the second virtual quadrilateral B are located at the center of the third type of sub-pixel 30, only parts of the four third type of sub-pixels 30 are contained in the second virtual quadrilateral B. However, since the sum of the four internal angles of the second virtual quadrilateral B is 360°, the parts of the different third type of sub-pixels 30 contained in the second virtual quadrilateral B are just integrated into a complete third type of sub-pixel 30, and the number of the third type of sub-pixels 30 is 1.

[0084] That is, within the second virtual quadrilateral B, the number ratio of the first type of sub-pixels 10 , the second type of sub-pixels 20 , and the third type of sub-pixels 30 is 4:4:1.

[0085] The setting of the quantity ratio of the above-mentioned first type sub-pixel 10, second type sub-pixel 20 and third type sub-pixel 30 can balance the differences in beam angles (light output angle and divergence) and curing effects of multiple sub-pixels in different wavelength ranges, and better match the light coverage of each type of sub-pixel.

[0086] In the light-cured pixel arrangement structure of the present invention, in any second virtual quadrilateral B formed with the center of the third sub-pixel 30 as the vertex, the number ratio of the first sub-pixel 10, the second sub-pixel 20 and the third sub-pixel 30 is 4:4:1. That is, it can be understood that, with the second virtual quadrilateral B as a light-emitting unit, the light-cured pixel arrangement structure of the present invention is composed of a plurality of light-emitting units arranged.

[0087] In a preferred embodiment, the second virtual quadrilateral B is a quadrilateral. The shapes of the first type of sub-pixel 10, the second type of sub-pixel 20, and the third type of sub-pixel 30 can all be quadrilaterals; the diagonals of the first type of sub-pixel 10, the second type of sub-pixel 20, and the third type of sub-pixel 30 are all parallel to the first direction and / or the second direction; the side lengths of the first type of sub-pixel 10 are all parallel to the corresponding side lengths of the second virtual quadrilateral B in which they are located; the side lengths of the second type of sub-pixel 20 are all parallel to the corresponding side lengths of the second virtual quadrilateral B in which they are located; and the side lengths of the third type of sub-pixel 30 are all parallel to the corresponding side lengths of the second virtual quadrilateral B in which they are located.

[0088] In a preferred embodiment, the second virtual quadrilateral B may be a square. The shapes of the first type of sub-pixel 10, the second type of sub-pixel 20, and the third type of sub-pixel 30 are also square.

[0089] It can be understood that the shapes of the first type of sub-pixel 10 , the second type of sub-pixel 20 , and the third type of sub-pixel 30 are also the center of a circle or other shapes.

[0090] Compared with the prior art, the photocuring pixel arrangement structure, photocuring module and printing device of the present invention, by setting multiple sub-pixels in different wavelength ranges, can avoid the curing problem caused by different cross-linking agent response effects on different inks when using the same light, and avoid the problem of partial color damage to different color inks when using the same light, thereby improving the photocuring effect and avoiding the yellowing problem.

[0091] The photocuring pixel arrangement structure, photocuring module and printing device of the present invention balance the differences in beam angles (light emitting angle and divergence degree) and curing effects of multiple sub-pixels in different wavelength ranges through a special array arrangement of the first type of sub-pixels, the second type of sub-pixels and the third type of sub-pixels, so as to better match the light coverage of each type of sub-pixel.

[0092] The photocuring pixel arrangement structure, photocuring module and printing device of the present invention accelerate the photocuring effect by setting the third type of sub-pixels (sub-pixels in the infrared wavelength range) to coordinate the first type of sub-pixels and the second type of sub-pixels.

[0093] The present invention further provides a photocuring module, which includes a substrate, on which the above-mentioned photocuring pixel arrangement structure is arranged. The photocuring module and the pixel arrangement structure of the present invention are based on the same application concept, so the photocuring module has all the beneficial effects of the pixel arrangement structure in the above-mentioned embodiment. The similarities can be understood by referring to the above explanation of the pixel arrangement structure, and will not be repeated below.

[0094] Based on the same application concept, the present invention also provides a printing device, which includes the light curing module in the above embodiment. The printing device and the light curing module are based on the same application concept, so the printing device has all the beneficial effects of the light curing module in the above embodiment. The similarities can be understood by referring to the above explanation of the pixel arrangement structure, and will not be repeated below.

[0095] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0096] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A photocurable pixel arrangement structure, characterized in that: comprising a plurality of first-type sub-pixels, second-type sub-pixels and third-type sub-pixels distributed in an array; in, Two of the third type of sub-pixels aligned in the first direction and two of the third type of sub-pixels aligned in the second direction form a first virtual quadrilateral, the vertices of the first virtual quadrilateral are located at the centers of the third type of sub-pixels, and the first direction is perpendicular to the second direction; In the first virtual quadrilateral, the number of the third type of sub-pixels is less than the number of the first type of sub-pixels, and the number of the third type of sub-pixels is less than the number of the second type of sub-pixels; The wavelength ranges of the first type of sub-pixels are different from those of the second type of sub-pixels, and the wavelength ranges of the first type of sub-pixels are different from those of the third type of sub-pixels. At least the first type of sub-pixels emit light in the UVA band.

2. The light-cured pixel arrangement structure according to claim 1, characterized in that: In the first virtual quadrilateral, the number of the first type of sub-pixels is less than the number of the second type of sub-pixels.

3. The light-cured pixel arrangement structure according to claim 1, characterized in that: In the first virtual quadrilateral, the number ratio of the first type of sub-pixels, the second type of sub-pixels and the third type of sub-pixels is 3:4:

1.

4. The light-cured pixel arrangement structure according to claim 1, characterized in that: The first virtual quadrilateral is a rhombus; and / or, The shapes of the first type of sub-pixels, the second type of sub-pixels, and the third type of sub-pixels are all rhombus-shaped, and the diagonals of the first type of sub-pixels, the second type of sub-pixels, and the third type of sub-pixels are all parallel to the first direction and / or the second direction; and / or, Each of the first-type sub-pixel, the second-type sub-pixel and the third-type sub-pixel can be controlled to light up independently; and / or, The wavelength range of the first type of sub-pixels is 320nm-400nm, the wavelength range of the second type of sub-pixels is 200nm-280nm, the wavelength range of the third type of sub-pixels is 200nm-320nm, or the wavelength range of the third type of sub-pixels is 750nm-1100nm.

5. The light-cured pixel arrangement structure according to claim 1, characterized in that: In the first virtual quadrilateral, Along the first direction, one sub-pixel of the first type is arranged between adjacent sub-pixels of the third type; Along the second direction, three first-type sub-pixels are arranged between adjacent third-type sub-pixels; The first-type sub-pixel located in the middle is surrounded by four second-type sub-pixels.

6. A light-cured pixel arrangement structure, characterized in that: comprising a plurality of first-type sub-pixels, second-type sub-pixels and third-type sub-pixels distributed in an array; in, Two of the third type of sub-pixels aligned in the first direction and two of the third type of sub-pixels aligned in the second direction form a second virtual quadrilateral, the vertices of the second virtual quadrilateral are located at the centers of the third type of sub-pixels, and the first direction is perpendicular to the second direction; In the second virtual quadrilateral, the number of the third type of sub-pixels is less than the number of the first type of sub-pixels, and the number of the third type of sub-pixels is less than the number of the second type of sub-pixels; The wavelength ranges of the first type of sub-pixels are different from those of the second type of sub-pixels, and the wavelength ranges of the first type of sub-pixels are different from those of the third type of sub-pixels. At least the first type of sub-pixels emit light in the UVA band.

7. The light-cured pixel arrangement structure according to claim 6, characterized in that: In the second virtual quadrilateral, the number of sub-pixels of the first type is equal to the number of sub-pixels of the second type.

8. The light-cured pixel arrangement structure according to claim 6, characterized in that: In the second virtual quadrilateral, the number ratio of the first type of sub-pixels, the second type of sub-pixels and the third type of sub-pixels is 4:4:

1.

9. The light-cured pixel arrangement structure according to claim 6, characterized in that: In the second virtual quadrilateral, Along the side length direction, two second-type sub-pixels are arranged between adjacent third-type sub-pixels; Along the first direction and / or the second direction, two first-type sub-pixels are arranged between adjacent third-type sub-pixels.

10. The light-cured pixel arrangement structure according to claim 6, characterized in that: The shapes of the first type of sub-pixels, the second type of sub-pixels, and the third type of sub-pixels are all quadrilaterals; The diagonals of the first type of sub-pixels, the second type of sub-pixels, and the third type of sub-pixels are all parallel to the first direction and / or the second direction.

11. The light-cured pixel arrangement structure according to claim 6, characterized in that: The side lengths of the first type of sub-pixels are all parallel to the side lengths of the corresponding second virtual quadrilaterals; The side lengths of the second type of sub-pixels are all parallel to the side lengths of the corresponding second virtual quadrilaterals; The side lengths of the third type of sub-pixels are parallel to the side lengths of the corresponding second virtual quadrilaterals.

12. The light-cured pixel arrangement structure according to claim 6, characterized in that: The second virtual quadrilateral is a square; and / or, The shapes of the first type of sub-pixels, the second type of sub-pixels, and the third type of sub-pixels are all square; and / or, Each of the first-type sub-pixel, the second-type sub-pixel and the third-type sub-pixel can be controlled to light up independently; and / or, The wavelength range of the first type of sub-pixels is 320nm-400nm, the wavelength range of the second type of sub-pixels is 200nm-280nm, the wavelength range of the third type of sub-pixels is 200nm-320nm, or the wavelength range of the third type of sub-pixels is 750nm-1100nm.

13. A light curing module, characterized in that: It comprises a substrate, on which is arranged a light-cured pixel arrangement structure as claimed in any one of claims 1 to 5 or claims 6 to 12.

14. A printing device, characterized in that: Comprising the light curing module as described in claim 13.

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