TWM638119U - Diffusing plate and light source module - Google Patents

Abstract

A diffusing plate has a light incident surface, a light exit surface and a plurality of dots. The light exit surface faces back to the light incident surface. The plurality of dots is disposed on the light incident surface or the light exit surface to form a plurality of patterns. The plurality of patterns is disposed in a matrix along a row direction and a column direction. Each of the plurality of patterns includes a first pattern, a second pattern, and an undotted area. The second pattern surrounds the first pattern. The undotted area is disposed from the first pattern toward a direction with an angle of 45DEG to the row direction or the column direction, and is located between the second pattern and the first pattern. A light source module of the invention using the above-mentioned diffusing plate is further provided. The diffusing plate and light source module provided by the invention may increase the brightness uniformity.

Description

Diffusion plate and light source module

This invention relates to a light source module, and in particular to a diffuser plate and a light source module using the diffuser plate.

A general liquid crystal display device includes a liquid crystal display panel and a backlight module, and since the liquid crystal display panel itself does not emit light, it is necessary to rely on the backlight module to provide an illumination source to the liquid crystal display panel. Therefore, the main function of the backlight module is to provide a high-brightness and high-uniformity lighting source.

Backlight modules can be divided into side-type backlight modules and direct-type backlight modules. In the current direct-lit backlight module, a pattern structure is arranged on the diffuser plate to improve the phenomenon of uneven brightness and darkness. However, because the brightness of the LED is too high, the effect of uniform light distribution cannot be achieved after the light is emitted.

In the conventional method, the number of LEDs can be increased, but the cost and power consumption will be increased at the same time. If the light mixing distance is increased, although the problem of uneven brightness and darkness can also be improved, it will increase the thickness of the product and cannot achieve thinner products.

This "Prior Art" section is only used to help understand the content of this creation, so the content disclosed in the "Prior Art" may contain some prior art that does not constitute the prior art known to those with ordinary skill in the art. In addition, the content disclosed in the "prior art" does not represent the content or the problems to be solved by one or more embodiments of this creation, nor does it mean that it has been known by those with ordinary knowledge in the technical field before the application of this creation know or know.

This creation provides a diffuser plate that can improve the uniformity of brightness.

This creation provides a light source module that can improve the uniformity of brightness.

Other purposes and advantages of this creation can be further understood from the technical characteristics disclosed in this creation.

In order to achieve one or part or all of the above purposes or other purposes, the diffusion plate provided by an embodiment of the present invention has a light incident surface, a light exit surface and a plurality of patterns. The light emitting surface faces away from the light incident surface. Multiple patterns are arranged on the light-incident surface or the light-exit surface to form multiple patterns. These patterns are arranged in a matrix along the row direction and the column direction. Each pattern includes a first pattern, a second pattern and an area without dots. The second pattern surrounds the first pattern. The dot-free area is arranged in a direction at an angle of 45° from the first pattern to the row direction or the column direction, and is located between the second pattern and the first pattern.

In an embodiment of the invention, the above-mentioned first pattern includes a plurality of first dots, and the second pattern includes a plurality of second dots.

In an embodiment of the invention, the size of the plurality of first dots and the plurality of second dots gradually decreases from the first pattern to the direction of the second pattern, and the center of any two adjacent first dots The first spacing between them is the same, the second spacing between the centers of any two adjacent second dots is the same, and the first spacing is the same as the second spacing.

In one embodiment of this invention, between the centers of some of the first dots adjacent to the no-dot area among the above-mentioned multiple first dots and the centers of some of the second dots adjacent to the no-dot area among the plurality of second dots The shortest distance of is twice the first spacing.

In an embodiment of the present invention, the above-mentioned plurality of first dots and the plurality of second dots have light absorbability.

In an embodiment of the invention, the above-mentioned first pattern further includes a cross-shaped dot pattern, the cross-shaped dot pattern is arranged at the center of the first pattern, and a plurality of first dots are distributed around the cross-shaped dot pattern.

In an embodiment of the present invention, the above-mentioned plurality of first dots are distributed around the centers of the patterns in the plurality of patterns.

In an embodiment of the invention, each of the above patterns further includes a separation pattern, which is arranged in the row direction or the column direction from the first pattern toward the second pattern, and is located between the second pattern and the first pattern, separating Patterns are suitable for separating areas without dots.

In an embodiment of the invention, each of the above-mentioned patterns further includes a third pattern surrounding the second pattern, the third pattern includes a plurality of third dots, and the dot-free area is further located between the second pattern and the third pattern.

To achieve one or part or all of the above purposes or other purposes, the light source module provided by an embodiment of the present invention includes a substrate, a plurality of light emitting elements and the above-mentioned diffuser plate. The diffusion plate is configured on the substrate. A plurality of light emitting elements are arranged on the substrate and located between the substrate and the diffusion plate. A plurality of light-emitting elements are arranged in a matrix, and each light-emitting element corresponds to each pattern.

In an embodiment of the present invention, the shortest distance between the centers of any two adjacent light emitting elements among the plurality of light emitting elements is 3.6 mm.

In the diffuser plate of this creative embodiment, a plurality of dots are arranged on the light-incident surface or the light-exit surface to form a plurality of patterns, and in each pattern, the direction from the first pattern to the row direction or the column direction at an angle of 45° The upper part includes a no-dot area, since the no-dot area does not have any pattern, the transmittance of light can be increased. Compared with the conventional pattern configuration using Gaussian distribution in order to eliminate the problem of excessive brightness of light-emitting elements, which cannot effectively improve the phenomenon of uneven brightness and darkness, the pattern created in this invention includes Gaussian distribution in a specific direction. There is no dot area, so that the surrounding area corresponding to the light-emitting element is improved because of less light and the brightness is darker, so it can be further improved Improve the uniformity of brightness. Since the light source module of the present invention uses the above-mentioned diffuser plate, the uniformity of brightness can also be improved. Moreover, the light source module of the present invention does not need to increase the number of light emitting elements or the light mixing distance, so as to save costs and realize thinner products.

In order to make the above and other purposes, features and advantages of this invention more comprehensible, preferred embodiments are specifically cited below, together with the accompanying drawings, and described in detail as follows.

1: Light source module

10: Substrate

11: outlets

20: Diffusion plate

21: light incident surface

22: Light-emitting surface

30: Light emitting element

100, 100a, 100b: patterns

110, 110a: the first pattern

111: The first outlet

112: cross dot pattern

120: Second pattern

121: Second outlet

130:Separation pattern

131: Separate dots

140: The third pattern

141: The third outlet

B: No dot area

C: column direction

D1: the first distance

D2: second spacing

D3, P: Distance

R: row direction

FIG. 1 is a three-dimensional schematic diagram of a light source module according to an embodiment of the present invention.

FIG. 2 is a partial schematic diagram of multiple patterns arranged on a diffuser plate in the present invention.

FIG. 3 is a schematic diagram of a pattern of an embodiment of the present invention.

FIG. 4 is a schematic diagram of a pattern of another embodiment of the present invention.

FIG. 5 is a schematic diagram of a pattern of another embodiment of the present invention.

The aforementioned and other technical contents, features and effects of this creation will be clearly presented in the following detailed description of a preferred embodiment with reference to the drawings. The directional terms mentioned in the following embodiments, such as: up, down, left, right, front or back, etc., are only directions referring to the attached drawings. Accordingly, the directional terms used are for illustration and not for limitation of the present invention.

FIG. 1 is a three-dimensional schematic diagram of a light source module according to an embodiment of the present invention. FIG. 2 is a partial schematic diagram of multiple patterns arranged on a diffuser plate in the present invention. FIG. 3 is a schematic diagram of a pattern of an embodiment of the present invention. Please refer to FIG. 1 to FIG. 3 , the light source module 1 of this embodiment includes a substrate 10 , a diffusion plate 20 and a plurality of light emitting elements 30 . The substrate 10 is, for example, a printed circuit board, which can be a rigid board or a flexible board, and is used for a plurality of light emitting elements 30 , and drives the plurality of light emitting elements 30 to emit light through the substrate 10 . In other embodiments, the extended The bulk board 20 is carried by the substrate 10 together with the plurality of light emitting elements 30 . In other words, the diffusion plate 20 and the plurality of light emitting elements 30 are disposed on the substrate 10 , and the plurality of light emitting elements 30 are located between the substrate 10 and the diffusion plate 20 , that is, the diffusion plate 20 covers the plurality of light emitting elements 30 . The diffusion plate 20 has a light incident surface 21 , a light exit surface 22 and a plurality of dots 11 . The light emitting surface 22 faces away from the light incident surface 21 . A plurality of light-emitting elements 30 are arranged beside the light-incident surface 21 and are suitable for emitting light to enter the light-incident surface 21 . According to different design requirements, for example, multiple dots 11 are arranged on the light incident surface 21 or the light exit surface 22, or are arranged on the light incident surface 21 and the light exit surface 22 at the same time to form multiple patterns 100. This creation is not special limit. The patterns 100 are arranged in a matrix along the row direction R and the column direction C, for example. In this embodiment, the row direction R is, for example, perpendicular to the column direction C, but not limited thereto.

The plurality of light emitting elements 30 may be light emitting diodes, but may also be other types of light emitting elements. In addition, the plurality of light emitting elements 30 may also be unpackaged light emitting chips cut directly from a wafer, such as light emitting diode chips. For example, the light-emitting diode chip is, for example, a grain-level nitride light-emitting diode chip that emits blue light at a dominant wavelength, but it is not limited thereto. The shape and quantity of the plurality of light emitting elements 30 are only for illustration, and the present invention is not particularly limited. In addition, the plurality of light emitting elements 30 are arranged in a matrix along the row direction R and the column direction C on the substrate 10 , for example.

Specifically, each light emitting element 30 corresponds to each pattern 100 respectively, that is, the light emitted by the light emitting element 30 is aligned and delivered to the center of the pattern 100 . The purpose of the pattern 100 is that when the light from the light-emitting element 30 passes through the dots 11 of the diffusion plate 20 , the pattern 100 can improve the light corresponding to the brighter center of the light-emitting element 30 and the darker surroundings, thereby improving the uniformity of brightness. Therefore, in terms of design, each light emitting element 30 corresponds to each pattern 100 respectively. In this embodiment, the number of the plurality of light emitting elements 30 is, for example, the same as the number of the plurality of patterns 100 , but it is not limited thereto. In another embodiment, the number of the plurality of patterns 100 is, for example, greater than the number of the plurality of light emitting elements 30 , but each light emitting element 30 still corresponds to one pattern 100 . Hereinafter, the structural composition of each pattern 100 will be described in detail.

Each pattern 100 is, for example, rectangular, such as square in this embodiment, but not limited thereto. In addition, the sides of the square pattern 100 are parallel to the row direction R or the column direction C, for example. The pattern 100 includes a first pattern 110 , a second pattern 120 and an area B without dots. The second pattern 120 surrounds the first pattern 110 . Please refer to FIG. 2 and FIG. 3 at the same time. The no-dot area B is arranged in a direction from the first pattern 110 to the direction of an angle of 45° with the row direction R or the column direction C, and is located between the second pattern 120 and the first pattern 110 . Since the row direction R is perpendicular to the column direction C, the direction that forms an angle of 45° with the row direction R, for example, also forms an angle with the column direction C of 45°. For example, when the row direction R is regarded as the direction of 0°, the column direction C is the direction of 90°, then the direction of 45° is 45° between the row direction R and the column direction C at the same time. In addition, at 135° The other direction also forms an angle of 45° with the row direction R and the column direction C at the same time, and the direction of 45° and the other direction of 135° are also perpendicular to each other, which is a diagonal direction for the square pattern 100 . Specifically, for example, in the pattern 100 of FIG. 3 , it is the direction from the center toward the upper left, the lower left, the upper right, and the lower right. It should be understood that the embodiment in FIG. 3 is only an example, and the present invention is not limited to any of the above-mentioned directions on the condition that the included angle with the row direction R or the column direction C is 45°.

In this embodiment, the first pattern 110 includes a plurality of first dots 111 , and the second pattern 120 includes a plurality of second dots 121 . The plurality of first dots 111 and the plurality of second dots 121 are, for example, designed in a circular shape, but the invention does not particularly limit the shape of the dots. The plurality of first dots 111 and the plurality of second dots 121 are, for example, light-absorbing structural elements or light-shielding structural elements. Specifically, the plurality of first dots 111 and the plurality of second dots 121 are, for example, elements such as ink that can reduce light penetration. On the other hand, the no-dot area B does not have any patterns or dots. That is, in the pattern 100, the first pattern 110 and the second pattern 120 are suitable for blocking light from penetrating, and the area B without dots is suitable for allowing light to pass through.

In addition, the first dots 111 and the second dots 121 in this embodiment are at least distributed around the center of the pattern 100 where they are located, for example. The center of the pattern 100 is located in the first pattern 110. According to different design requirements, it may have the distribution of the first dots 111, or may not have any structure or pattern. On the other hand, the size of the first dots 111 and the second dots 121 (in this embodiment, the radius, diameter or area of the circle) gradually decreases from the first pattern 110 to the second pattern 120 . The term "direction from the first pattern 110 to the second pattern 120" here refers to the direction of diffusion from the center of the pattern 100 to the periphery, and will not be affected by the shape of the pattern 100 itself. For example, from the first pattern 120 in FIG. The diffusion direction of 110 toward the second pattern 120 is similar to annular diffusion. As mentioned above, since the light emitted by the light-emitting element 30 is brighter corresponding to the center of the light-emitting element 30 and darker around it, in order to improve the uniformity of brightness, the light of the first pattern 110 corresponding to the center of the light-emitting element 30 will absorb light. The effect is greater than the light absorption effect of the second pattern 120 corresponding to the surrounding of the light emitting element 30 , that is, the area of the plurality of first dots 111 is larger than the area of the plurality of second dots 121 to achieve the above effect.

However, the above method can only initially improve the unevenness of brightness and darkness. Therefore, in the pattern 100 of the present embodiment, a dot-free area B is further arranged in the direction from the first pattern 110 toward the angle of 45° with the row direction R or the column direction C, so that the surrounding area corresponding to the light emitting element 30 is affected by light The situation that the brightness is dark due to the light absorption effect of the second dots 121 is improved, and the uniformity of the overall brightness is improved.

In this embodiment, each pattern 100 further includes a plurality of separation patterns 130 , for example. The separation pattern 130 is disposed in the row direction R or the column direction C from the first pattern 110 toward the second pattern 120 , and is located between the second pattern 120 and the first pattern 110 . Specifically, for example, in the pattern 100 of FIG. 3 , it is directed from the center to the up, down, left, and right directions. It should be understood that the embodiment in FIG. 3 is only an example, and the present invention is not limited to any of the above directions provided that the row direction R or the column direction C is satisfied. The separation pattern 130 includes a plurality of separation dots 131 . The structural features and functions of the partitioning dots 131 are the same as those of the above-mentioned first dots 111 and second dots 121 , and will not be repeated here. The partition pattern 130 is suitable for partitioning the non-screen dot area B to divide the non-screen dot area B into a plurality of sub-areas.

As mentioned above, since the quantity distribution density per unit area of the plurality of first dots 111 and the plurality of second dots 121 in this embodiment is the same, the spacing between the dots is also the same. But the size of a plurality of first network dots 111 and a plurality of second network dots 121 gradually becomes smaller from the first pattern 110 toward the direction of the second pattern 120, and the distance from the edge of the network point to the edge of another adjacent network point will be Gradually get bigger. Therefore, this creation defines the spacing between dots as the distance from the center of a dot to the center of another dot adjacent to it. In this embodiment, the first distance D1 between the centers of any two adjacent first dots 111 is the same, the second distance D2 between the centers of any two adjacent second dots 121 is the same, and A distance D1 is the same as the second distance D2. Among them, the center of some of the first network dots 111 adjacent to the sub-region of the non-network dot area B among the plurality of first network dots 111 and the part of the second network dots 121 of the plurality of second network dots 121 adjacent to the sub-region of the non-network dot area B The shortest distance D3 between centers is twice the first distance D1. In other words, the distance D3 is also twice the second distance D2. That is to say, the design method of the dot-free area B is to arrange a plurality of dots evenly distributed in the pattern 100, and then cancel several dots in the direction of an angle of 45° with the row direction R or the column direction C to form the dot-free area B . Therefore, the distance from the center of the corresponding and adjacent first dots 111 to the center of the second dots 121 is twice or an integer multiple of the first distance D1 or the second distance D2 .

In the diffusion plate 20 of this embodiment, a plurality of dots 11 are arranged on the light incident surface 21 or the light exit surface 22, and the plurality of dots 11 are arranged to form a plurality of patterns 100, and each pattern 100 is directed from the first pattern 110 to The direction having an angle of 45° with the row direction R or the column direction C includes a dot-free area B, since the dot-free area B does not have any patterns or dots, the light transmittance of light can be increased. Compared with the conventional pattern configuration using Gaussian distribution in order to eliminate the problem of excessive brightness of light-emitting elements, which cannot effectively improve the phenomenon of uneven brightness and darkness, the pattern 100 created in this invention is based on the Gaussian distribution. R or the direction of the angle of 45° in the column direction C includes a no-dot area B, so that the surrounding area corresponding to the light-emitting element 30 is improved because the light is less and the light-absorbing effect of the second dot 121 makes the brightness darker, so it can be used. Further improve brightness uniformity. The light source module 1 of this embodiment is due to Using the diffuser plate 20 described above can also improve the uniformity of brightness. Moreover, the light source module 1 of this embodiment does not need to increase the number of light emitting elements 30 or the light mixing distance, so as to save costs and realize light and thin products.

In a preferred embodiment, in order to achieve the above effects, the shortest distance P from the center of each light emitting element 30 to the center of another adjacent light emitting element 30 is 3.6 mm. That is to say, the so-called shortest distance P refers to the distance between the centers of two adjacent light-emitting elements 30 in the column direction C or row direction R, rather than the distance between two adjacent light-emitting elements 30 in the diagonal direction in the matrix arrangement. distance from the center of . Since each pattern 100 corresponds to each light emitting element 30 , specifically, the shortest distance from the center of each pattern 100 to the center of another adjacent pattern 100 is also 3.6 mm.

FIG. 4 is a schematic diagram of a pattern of another embodiment of the present invention. Please refer to FIG. 4 , the structure and advantages of the pattern 100a of this embodiment are similar to those of the above-mentioned pattern 100 , the only difference lies in the pattern 100a of this embodiment. A cross-shaped dot pattern 112 is arranged at the center of the first pattern 110 a , and a plurality of first dots 111 are distributed around the cross-shaped dot pattern 112 . The extending direction of the cross-shaped dot pattern 112 is, for example, parallel to the row direction R and the column direction C, that is, the extending direction of the cross-shaped dot pattern 112 and the distribution direction of the non-dot area B are not perpendicular to each other. The reason for the cross-shaped dot pattern 112 is that in this embodiment, dots are arranged in the center of the first pattern 110a, since the size of the first dots 111 gradually changes from the first pattern 110 to the direction of the second pattern 120 In other words, the dot size near the center of the first pattern 110a is the largest, even greater than the first distance D1 between the centers of any two adjacent first dots 111, so that some dots form an overall cross-shaped pattern. In different embodiments, the first pattern 110a may also include other patterns of different shapes, which is not particularly limited in the present invention.

FIG. 5 is a schematic diagram of a pattern of another embodiment of the present invention. Please refer to FIG. 5 , the pattern 100b of this embodiment is similar to the structure and advantages of the above-mentioned pattern 100 , the only difference is that in the pattern 100b of this embodiment, each pattern 100b also includes a third pattern 140 surrounding the second pattern 120 , for example. therefore, The third pattern 140 is adjacent to the edge of the pattern 100b, and the first pattern 110 is adjacent to the center of the pattern 100b. The third pattern 140 includes a plurality of third dots 141. The structural features and functions of the third dots 141 are the same as those of the first dots 111 and the second dots 121, and will not be repeated here. The third pattern 140 in FIG. 5 includes a plurality of sub-patterns in a direction having an angle of 45° with the row direction or the column direction, and these sub-patterns are not connected to each other, but not limited thereto. For example, the dot-free area B is also located between the second pattern 120 and the third pattern 140 , and is also located between the sub-patterns of the third pattern 140 . In this embodiment, the pattern 100 b does not have a separation pattern, so the non-screen dot area B surrounds the first pattern 110 , and the non-screen dot area B between the second pattern 120 and the third pattern 140 surrounds the second pattern 120 . According to different design requirements, the range area of the no-dot area B can be adjusted.

To sum up, in the diffuser plate of this creative embodiment, a plurality of dots are arranged on the light-incident surface or the light-exit surface to form a plurality of patterns, and in each pattern, the orientation from the first pattern to the row direction or column The direction with an included angle of 45° includes a no-dot area, and since the no-dot area does not have any pattern, the light transmittance of light can be increased. Compared with the conventional pattern configuration using Gaussian distribution in order to eliminate the problem of excessive brightness of light-emitting elements, which cannot effectively improve the phenomenon of uneven brightness and darkness, the pattern created in this invention is based on the Gaussian distribution. The direction with an included angle of 45° in the column direction includes a no-dot area, so that the surrounding area corresponding to the light-emitting element is less bright and the brightness is darker, so that the brightness uniformity can be further improved. Since the light source module of this embodiment uses the above-mentioned diffuser plate, the uniformity of brightness can also be improved. Moreover, the light source module of this embodiment does not need to increase the number of light emitting elements or the light mixing distance, so as to save costs and realize thinner products.

However, the above is only a preferred embodiment of this creation, and should not limit the scope of implementation of this creation, that is, all simple equivalent changes and modifications made according to the patent scope of this creation and the content of the new description, All still belong to the scope covered by this creation patent. In addition, any embodiment or patent scope of this creation does not need to achieve all the purposes or advantages disclosed by this creation or features. In addition, the abstract part and the title are only used to assist in the search of patent documents, and are not used to limit the scope of rights of this creation. In addition, terms such as "first" and "second" mentioned in this specification or the scope of the patent application are only used to name elements (elements) or to distinguish different embodiments or ranges, and are not used to limit the number of elements. upper or lower limit.

100: pattern

110: The first pattern

111: The first outlet

120: Second pattern

121: Second outlet

130:Separation pattern

131: Separate dots

B: No dot area

D1: the first distance

D2: second spacing

D3: Distance

Claims (11)

A diffuser plate has: a light incident surface; a light exit surface, facing away from the light incident surface; and a plurality of dots, arranged on the light incident surface or the light exit surface, to be arranged in a plurality of patterns, and the patterns are arranged along the A row direction and a column direction are arranged in a matrix, wherein each of the patterns includes a first pattern, a second pattern and a dot-free area, the second pattern surrounds the first pattern, and the dot-free area is configured from the The first pattern faces a direction with an angle of 45° with the row direction or the column direction, and is located between the second pattern and the first pattern. The diffusion plate according to claim 1, wherein the first pattern includes a plurality of first dots, and the second pattern includes a plurality of second dots. The diffusion plate as described in claim 2, wherein the size of the first dots and the second dots gradually decreases from the first pattern to the second pattern, any two adjacent first dots A first distance between centers of dots is the same, a second distance between centers of any two adjacent second dots is the same, and the first distance is the same as the second distance. The diffusion plate as described in claim 3, wherein the centers of some of the first network points adjacent to the network-free area among the first network points and the centers of some second network points of the second network points adjacent to the network-free area The shortest distance between is twice the first spacing. The diffuser plate according to claim 2, wherein the first dots and the second dots are light-absorbing. The diffuser plate as described in claim 2, wherein the first pattern further includes a cross-shaped dot pattern, the cross-shaped dot pattern is arranged in the center of the first pattern, and the first dots are distributed on the cross-shaped around the dot pattern. The diffuser plate as claimed in claim 2, wherein the first dots are distributed around the centers of the patterns in the patterns. The diffuser plate as described in claim 1, wherein each of the patterns further includes a partition pattern, which is arranged in the row direction or the column direction from the first pattern to the second pattern, and is located in the second pattern Between the first pattern and the separation pattern, the separation pattern is suitable for separating the dot-free area. The diffusion plate as described in Claim 1, wherein each of the patterns further includes a third pattern surrounding the second pattern, the third pattern includes a plurality of third dots, and the dot-free area is further located in the second pattern and between the third pattern. A light source module, comprising: a substrate; a diffusion plate disposed on the substrate, and having: a light incident surface; a light exit surface facing away from the light incident surface; and a plurality of dots disposed on the light incident surface Or the light-emitting surface is arranged in a plurality of patterns, and the patterns are arranged in a matrix along a row direction and a column direction, wherein each of the patterns includes a first pattern, a second pattern and a dot-free area, the The second pattern surrounds the first pattern, and the dot-free area is arranged in a direction at an angle of 45° from the first pattern to the row direction or the column direction, and is located between the second pattern and the first pattern; as well as A plurality of light-emitting elements are arranged on the substrate and between the substrate and the diffusion plate. The light-emitting elements are arranged in a matrix, and each of the light-emitting elements corresponds to each of the patterns. The light source module according to Claim 10, wherein the shortest distance between the centers of any two adjacent light emitting elements among the light emitting elements is 3.6 mm.

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