Light source module

Abstract

The invention discloses a light source module. The light source module comprises a substrate; the light-emitting element is arranged on the substrate and is provided with a light-emitting surface; the cup shell is arranged on the substrate and provided with a top surface, the cup shell is arranged around the light-emitting element to form a containing space, and the vertical distance between the light-emitting surface of the light-emitting element and the substrate is larger than or equal to the vertical distance between the top surface of the cup shell and the substrate.

Description

Technical Field

[0001] The invention relates to a light emitting element, and in particular to a light source module. Background Art

[0002] Light-Emitting Diode (LED) has gradually replaced traditional light sources in recent years due to its advantages of small size, high brightness, low energy consumption, etc. Light-Emitting Diode is currently widely used in backlight modules as a light-emitting element.

[0003] In the existing backlight module design, multiple light source modules with light-emitting elements, reflective cup shells, substrates and other components are installed on the circuit board. The cup shell design with higher technology in the prior art often limits the light output angle of the light source module, thereby limiting the size of the light spot of the light source module on the light output plane. In addition, when the pitch between the light source modules is too large, dark areas will appear between the light source modules, resulting in poor uniformity and causing a bad visual experience. Although the above problems can be improved by reducing the pitch between the light source modules, the number of light source modules must be increased while reducing the pitch, resulting in increased costs. Summary of the invention

[0004] The present invention provides a light source module, comprising a substrate; a light-emitting element, which is arranged on the substrate and has a light-emitting surface; a cup shell, which is arranged on the substrate and has a top surface, and the cup shell is arranged around the light-emitting element to form a accommodating space, wherein the vertical distance from the light-emitting surface of the light-emitting element to the substrate is greater than or equal to the vertical distance from the top surface of the cup shell to the substrate. BRIEF DESCRIPTION OF THE DRAWINGS

[0005] The following will be described in detail with reference to the accompanying drawings. It should be noted that, in accordance with standard practice in the industry, various features are not drawn to scale and are only used for illustration. In fact, the size of the components can be arbitrarily enlarged or reduced to clearly show the features of the embodiments of the present invention.

[0006] Figure 1 is a side view of the light source module structure of a comparative example;

[0007] Figure 2 is a schematic diagram of the projection of the light source module structure of the comparative example on the light emitting plane;

[0008] Figure 3A is a side view of a light source module 100 according to some embodiments of the present invention;

[0009] Figure 3B is a side view of a light source module 200 according to some other embodiments of the present invention;

[0010] Figure 4is a schematic diagram of the projection of the light source module on the light emitting plane according to some embodiments of the present invention;

[0011] Figure 5 FIG. 1 is a schematic diagram illustrating some embodiments of applying a light source module to a backlight module according to an embodiment of the present invention.

[0012] Explanation of symbols

[0013] 100: Light source module

[0014] 101:Substrate

[0015] 101t: Substrate upper surface

[0016] 102: Light emitting element

[0017] 102t: Luminous surface

[0018] 103: Cup shell

[0019] 103t: Upper surface of cup shell

[0020] 104: Wire structure

[0021] 105: Lens structure

[0022] 200: Light source module

[0023] 201: Carrier substrate

[0024] 202: Diffuser Plate

[0025] 203: Light color conversion structure

[0026] h1: distance

[0027] h2: distance

[0028] h3: Distance

[0029] t1: thickness

[0030] t2: thickness

[0031] P1: Highest point

[0032] S:Substrate

[0033] L: Light-emitting element

[0034] P: Luminous surface

[0035] C: Cup shell

[0036] d1: Pitch

[0037] d2: Pitch

[0038] PS: Light plane

[0039] D: Area

[0040] a: Area DETAILED DESCRIPTION

[0041] The following disclosure provides many different embodiments or examples to show different components of the embodiments of the present invention. The following will disclose specific examples of the components of this specification and their arrangement to simplify the description of the present invention. Of course, these specific examples are not intended to limit the present invention. For example, if the following invention content of this specification describes forming a first component on or above a second component, it means that it includes an embodiment in which the first and second components formed are in direct contact, and also includes an embodiment in which an additional component can be formed between the above-mentioned first and second components, and the first and second components are not in direct contact. In addition, the various examples in the description of the present invention may use repeated reference symbols and / or words. The purpose of these repeated symbols or words is to simplify and clarify, and is not used to limit the relationship between the various embodiments and / or the configurations.

[0042] In addition, spatially relative terms such as "under", "beneath", "down", "over", "above", "upper" and similar terms may be used to facilitate description of the relationship between one (or some) elements or features and another (or some) elements or features in the drawings. These spatially relative terms include different orientations of the device in use or operation, as well as the orientations described in the drawings. When the device is turned to a different orientation (for example, rotated 90 degrees or other orientations), the spatially relative adjectives used therein will also be interpreted according to the turned orientation.

[0043] Here, the terms "about", "approximately", and "generally" generally mean within 20% of a given value or range, preferably within 10%, and more preferably within 5%, or within 3%, or within 2%, or within 1%, or within 0.5%. It should be noted that the quantities provided in the specification are approximate quantities, that is, in the absence of specific description of "about", "approximately", and "generally", the meanings of "about", "approximately", and "generally" can still be implied.

[0044] In addition, in some embodiments of the present invention, terms such as "disposed", "connected" and similar terms, unless otherwise defined, may refer to two components being in direct contact, or may refer to two components not being in direct contact, wherein an additional component is located between the two structures. Terms such as "disposed", "connected" and similar terms may also include situations where both structures are movable or both structures are fixed.

[0045] Reference Figure 1 , which is a side view of the light source module structure of the comparative example. Figure 1 As shown, the light source module structure generally includes a substrate S, a light emitting element L disposed on the substrate S, the light emitting element L includes a light emitting surface P, and a cup shell C disposed on the substrate S for reflecting light. However, since the light emitting surface P of the light source module structure of the comparative example is lower than the configuration of the cup shell C, the cup shell C blocks the light emitted by the light emitting surface P (especially the light at a large angle), thereby limiting the light output angle of the light source module. In addition, as Figure 2 As shown, the limitation of the light output angle further limits the size of the light spot that can be generated by the light source module on the light output plane PS. When the pitch d1 between the light source modules (the distance between the centers of the two light source modules) increases, the insufficient size of each light spot leads to a dark area D between the light spots. Such uneven light spots cause problems such as poor visual experience.

[0046] In order to solve at least the above-mentioned technical problems, the present invention provides a light source module, wherein the light source module has a configuration in which the light emitting surface of the light emitting element is higher than the cup shell. Since the light emitting surface of the light source module of the present invention is higher than or equal to the cup shell, the light emitting angle of the light source module can be increased, and a larger light spot can be formed on the light emitting plane, thereby increasing the uniformity of the light spot of the light source module. The light source module of the present invention has a larger light emitting angle and excellent uniformity, which can reduce the number of light emitting diodes in the light source module, thereby reducing the manufacturing cost.

[0047] Please refer to Figure 3A . Figure 3A FIG. 1 is a side view of a light source module 100 according to some embodiments of the present invention. Figure 3A As shown, the light source module 100 may include a substrate 101, a light emitting element 102, a cup shell 103 and a wire structure 104. The above elements will be described in detail as follows.

[0048] In some embodiments, the substrate 101 may be any suitable substrate. For example, the substrate 101 may be a transparent substrate or an opaque substrate. In some embodiments, the substrate 101 is a flexible substrate. In some embodiments, the substrate 101 is a rigid substrate. For example, the material of the substrate 101 may be resin, sapphire, silicon, glass, metal, ceramic, or other suitable materials. In some embodiments, the substrate 101 further includes a conductive circuit layer (not shown) located on the substrate 101. In this way, the substrate 101 can be electrically connected to the light-emitting element 102 through the conductive circuit layer.

[0049] Reference Figure 3A, the light emitting element 102 is disposed above the substrate 101. The light emitting element 102 includes a light emitting surface 102t, which has a vertical distance h1 (hereinafter referred to as the light emitting surface height h1) from the top surface 101t of the substrate 101. In some embodiments, the light emitting element 102 includes a light emitting diode chip capable of emitting a specific wavelength. For example, the light emitting element 102 may include a light emitting diode chip that emits blue light or a light emitting diode chip that emits ultraviolet light.

[0050] Reference Figure 3A , the cup shell 103 is arranged around the light-emitting element 102 to form an accommodating space. In some embodiments, the cup shell 103 can be any suitable reflective material. For example, the material of the cup shell 103 may include thermosetting materials, such as epoxy molding compound (EMC), silicone molding compound (SMC); thermoplastic materials, such as polyphthalamide (PPA), poly (1,4-cyclohexylene dimethylene terephthalate), PCT) and other suitable materials. In some embodiments, the light transmittance of the material of the cup shell 103 may be between 15% and 50%, for example, 10% to 45%. In some embodiments, the cup shell 103 is a semi-transparent material.

[0051] Continue to refer to Figure 3A , there is a vertical distance h2 (i.e., cup shell height h2) between the top surface 103t of the cup shell 103 and the top surface 101t of the substrate 101. In some embodiments, the light emitting surface height h1 is greater than the cup shell height h2. Figure 1 In the structure, the cup shell is higher than the light-emitting surface (such as Figure 1 As shown), in some embodiments of the present invention, the configuration in which the light-emitting surface is higher than the cup shell can reduce the absorption of light (especially large-angle light) by the cup shell, allowing the light to be emitted at a larger angle, increasing the light spot of the light source module on the light-emitting plane, and improving the light-emitting uniformity of the light source module. Specifically, in some embodiments, the ratio h1 / h2 of the light-emitting surface height h1 to the cup shell height h2 is between 1 and 1.66, for example, 1 to 1.33. For example, in some embodiments, the light-emitting surface height h1 can be between 0.15 mm and 0.25 mm, and the cup shell height h2 can be between 0.15 mm and 0.18 mm.

[0052] Continue to refer to Figure 3A, the cup shell 103 has a thickness t1 on the substrate. In some embodiments, the thickness t1 of the cup shell 103 may be between 0.15 mm and 0.20 mm, for example, 0.16 mm and 0.19 mm. When the thickness t1 of the cup shell 103 is too large, it may cause increased reflection and reduce the light spot; when the thickness t1 of the cup shell 103 is too small, it may cause defects in the cup shell and cause abnormal light leakage.

[0053] Reference Figure 3A , the conductive wire structure 104 is disposed on the substrate 101 to connect the light emitting element 102 to the conductive circuit layer (not shown) on the substrate 101 to connect the substrate 101 and the light emitting element 102. In some embodiments, the conductive wire structure 104 includes one or more conductive wires. In some embodiments, the material of the conductive wire may include aluminum (Al), copper (Cu), tungsten (W), their respective alloys, other appropriate conductive materials, or a combination of the foregoing. In some embodiments, the vertical distance between at least a portion of the conductive wire structure 104 and the upper surface 101t of the substrate is greater than the height h2 of the cup shell 103, that is, the conductive wire structure 104 has a portion that is farther away from the substrate 101 than the top surface 103t of the cup shell. Specifically, in some embodiments, the metal wire included in the conductive wire structure 104 has an arc structure, and the arc structure has a highest point P1 on the substrate 101, and the vertical distance h3 from the highest point P1 to the upper surface 101t of the substrate is greater than the height h2 of the cup shell 103.

[0054] Reference Figure 3A, the lens structure 105 is disposed on the substrate 101 to cover the light emitting element 102, the cup shell 103 and the wire structure 104. In some embodiments, a dispensing process can be used to dispense glue on the substrate 101 to cover the light emitting element 102 to form the lens structure 105. In some embodiments, the material of the lens structure 105 may include an organic compound composed of silicon, carbon and oxygen or other suitable transparent packaging materials, but the present invention is not limited thereto. In some embodiments, the material of the lens structure 105 may be silicone, but the present invention is not limited thereto. In some embodiments, the material of the lens structure 105 may be silicone, but the present invention is not limited thereto. In some embodiments, trisiloxane may be added to the lens structure 105, and the concentration of trisiloxane may be between 16% and 23%. In some embodiments, the concentration of trisiloxane may be 16%, 17%, 18%, 19%, 20%, 21%, 22%, 23%. In some embodiments, the lens structure 105 may be a convex lens, but the present invention is not limited thereto. In some embodiments, the lens structure 105 may be in a shape having an arc surface. In some embodiments, the lens structure 105 may be in the shape of a hemisphere or a hemi-ellipsoid. In some embodiments, when viewed from the side, the lens structure 105 has a groove around the bottom. In some embodiments, when viewed from the top, the lens structure 105 has an annular groove around the bottom. In some embodiments, the cup shell 103 is accommodated in the groove around the bottom of the lens structure 105. In some embodiments, when viewed from the top, the cup shell 103 is annularly surrounding the substrate 101. In some embodiments, when viewed from the side, the cup shell 103 may have a trapezoidal shape.

[0055] like Figure 3A As shown, in some embodiments, the portion of the lens structure 105 that is higher than the top surface 103t of the cup shell has a thickness t2. In some embodiments, the ratio of the cup shell height h2 to the thickness t2 (h2 / t2) is between 1:3 and 1:5. In some embodiments, the ratio of the cup shell height h2 to the thickness t2 (h2 / t2) is between 1:4 and 1:4.5. When the ratio (h2 / t2) of the height h2 of the cup shell 103 to the thickness t2 of the lens structure 105 is too large (for example, greater than 1:2), the light spot of the light source module on the light emitting plane will not be able to diverge; when h2 / t2 is too small (for example, less than 1:6), the pattern of the light spot on the light emitting plane will be deformed (for example, from a circle to a square). Specifically, in some embodiments, the height h2 of the cup shell 103 can be between 0.13mm and 0.15mm and the thickness t2 of the lens structure 105 can be between 0.68mm and 0.88mm. By Figure 3A1 is a side view of the light source module 100 , the side surface of the cup shell 103 and the side surface of the lens structure 105 are discontinuous and have an inclined angle (not shown).

[0056] Figure 3B According to some other embodiments of the present invention, a side view of a light source module 200 is shown. Figure 3B In the embodiment of FIG. 1 , except that the height of the light emitting surface 102t is the same as the height of the top surface 103t of the cup shell, the rest of the Figure 3A Compared with the configuration in which the cup shell is higher than the light-emitting surface in the comparative example (for example, Figure 1 As shown), in the present invention Figure 3B In some of the embodiments shown, by setting the height of the light emitting surface 102t to be the same as the height of the top surface 103t of the cup shell, the absorption or reflection of light by the cup shell can still be reduced and the light output angle of the light source module can be increased. In some embodiments, the refractive index (n value) of the cup shell 103 may be between 1.53 and 1.56. In some embodiments, the refractive index of the cup shell 103 may be 1.53, 1.54, 1.55 or 1.56. In some embodiments, the refractive index of the lens structure 105 may be between 1.45 and 1.56. In some embodiments, the refractive index of the lens structure 105 may be 1.45, 1.46, 1.47, 1.48, 1.49, 1.50, 1.51, 1.52, 1.53, 1.54, 1.55 or 1.56.

[0057] By adjusting the refractive index of the cup shell 103 and the refractive index of the lens structure 105, the light output angle of the light source module can be further adjusted. In some embodiments, the cup shell 103 is a semi-transparent material, and the refractive index of the lens structure 105 can be designed to be less than the refractive index of the cup shell 103, which can further increase the light output angle of the light source module, for example, the refractive index of the lens structure 105 is 1.50 and the refractive index of the cup shell 103 is 1.53. For example, the refractive index of the lens structure 105 is 1.53 and the refractive index of the cup shell 103 is 1.56.

[0058] Figure 4 Schematic diagram of the projection of the light source module on the light emitting plane in some embodiments of the present invention. Figure 4 As shown, due to the configuration that the light emitting surface is higher than or flush with the cup shell in some embodiments of the present invention, the absorption or reflection of light by the cup shell is reduced, thereby increasing the light output angle of the light source module, and a larger light spot can be generated on the light output plane PS than the light source module of the comparative example (the configuration that the light emitting surface is lower than the cup shell). In this way, the larger light spot of the light source module of the present invention can improve the dark area (such as the dark area of ​​the light output plane) caused by the lack of light spot size and the inability to overlap on the light output plane of the comparative example. Figure 4In addition, the light source module of the present invention can be configured with a larger pitch (for example, d2>d1) than the light source module of the comparative example without generating a dark area on the light emitting plane, thereby reducing the usage of the light source module and lowering the production cost.

[0059] Now, the effect of reducing the cup shell height on the spot size is explained by the optical simulation results in Tables 1 and 2 below. Table 1 shows the given conditions of Experimental Examples 1 and 2. Table 2 shows the simulation results of the area of ​​different spot brightness on the light exit plane of Experimental Examples 1 and 2. The "cup height" referred to here is the cup shell height based on the upper surface of the substrate (i.e., Figure 3A The height h2 of the cup shell 103 is shown as "glue height" which is the height of the lens structure exceeding the cup shell (ie, Figure 3A The thickness of the lens structure 105 is t2. Here, the brightness of the brightest spot (center point) on the light-emitting plane is set as 100%, and the brightness of other spots is based on the brightness of the brightest center point as a comparison benchmark.

[0060] As shown in the results of Table 2, compared with the light source module configured with a higher cup shell (0.4 mm), the light source module configured with a lower cup shell (0.2 mm) can increase the area under different brightness.

[0061] Table 1

[0062]

[0063]

[0064] Table 2

[0065]

[0066] Now, the following Tables 3 and 4 illustrate the results of the spot brightness distribution on the light-emitting plane of the light source module with different cup shell heights actually observed by the CCD (Charge Coupled Device) image sensor. Table 3 is the given conditions of Experimental Examples 3 to 7. Table 4 is the observation results of the area of ​​different spot brightness on the light-emitting plane in Experimental Examples 3 to 7. The definitions of "cup height" and "glue height" referred to here are the same as those used in the aforementioned simulation and will not be repeated here. Here, the brightness of the light spot at the brightest point (center point) on the light-emitting plane is set to 100% brightness, and the brightness of the rest is compared with the brightness of the brightest point.

[0067] As shown in the results of Table 4. Compared with the group with the luminous surface lower than the cup shell, the group with the luminous surface higher than the cup shell can improve the area of ​​all brightness under the condition of the same light source intensity. In addition, under the condition of the same light source intensity, the unit area brightness of the group with the luminous surface higher than the cup shell is also significantly lower than the group with the luminous surface lower than the cup shell, indicating that the configuration with the luminous surface higher than the cup shell can more effectively disperse light to a larger area, and therefore has a lower unit area brightness under the same light source intensity.

[0068] Table 3

[0069] Experimental Example 3 Experimental Example 4 Experimental Example 5 Experimental Example 6 Experimental Example 7 Cup height (mm) 0.45 0.45 0.15 0.15 0.15 Glue height(mm) 0.68 0.67 0.76 0.82 0.87 Light emitting surface height (mm) 0.16 0.16 0.16 0.16 0.16

[0070] Table 4

[0071]

[0072]

[0073] Figure 5 FIG. 1 is a schematic diagram of a light source module according to an embodiment of the present invention being applied to a backlight module. Figure 5 As shown, in some embodiments, the backlight module may include a light source module (eg, the light source module 100 ), a carrier substrate 201 , a diffusion plate 202 , and a light color conversion structure 203 . Figure 5 For illustration only, the light source module of the present invention may also be applied to various backlight modules known to those skilled in the art.

[0074] like Figure 5 As shown, a plurality of light source modules 100 can be arranged on a carrier substrate 201 to form a light-emitting board to provide backlight. In some embodiments, the carrier substrate 201 can be a printed circuit board (PCB board) or a substrate such as glass, ceramic, polymer (such as polyimide, polymethyl methacrylate) with circuits, but the present invention is not limited thereto. In some embodiments, the light source module 100 is a monochromatic light source. The light source module 100 can use a blue or other color (for example, red, green) light source module according to design requirements, and the number of light source modules can also be adjusted according to actual product requirements.

[0075] like Figure 5 As shown, a light diffusion structure 202 may be further disposed above the light emitting panel. The light diffusion structure 202 may improve the uniformity of light distribution by refracting and reflecting the light emitted by the light emitting panel. In some embodiments, the light diffusion structure 202 may be a single-layer or multi-layer structure according to design requirements. For example, the light diffusion structure 202 may include a particle diffusion plate and / or a diffusion film with a microstructure (not shown), but the present invention is not limited thereto.

[0076] like Figure 5As shown, a light color conversion structure 203 may be further provided above the light emitting plate. The light color conversion structure 203 includes light conversion materials of different colors to convert the light emitted by the light source module 100 into different colors. For example, in some embodiments where the light source module 100 is a blue light source, the light color conversion structure 203 may include a red light conversion material and a green light conversion material, wherein the red light conversion material and the green light conversion material may absorb part of the blue light emitted by the light source module 100 and convert it into red light and green light respectively, and the converted red light, green light and part of the blue light are mixed into white light. In some embodiments, the light color conversion structure 203 may be a quantum dot film. In some embodiments, the light color conversion structure 203 may be a yellow quantum dot film. In some embodiments, the light color conversion structure 203 may be a red and green quantum dot film. In some embodiments, the light color conversion structure 203 may include red quantum dots and green quantum dots.

[0077] In some embodiments, the yellow light conversion material may include yellow quantum dots or yellow phosphor. For example, the yellow light conversion material may include yttrium aluminum garnet (YAG) phosphor. In some embodiments, the red light conversion material may be red quantum dots or red phosphor, such as (Sr, Ca)AlSiN3:Eu 2+ 、Ca2Si5N8:Eu 2+ 、Sr(LiAl3N4):Eu 2+ , manganese-doped red fluoride phosphors (e.g., K2GeF6:Mn 4+ 、K2SiF6:Mn 4+ 、K2TiF6:Mn 4+ ), etc., but the present invention is not limited thereto. In some embodiments, the green light conversion material may be green quantum dots or green phosphors, such as lucite (LuAG) phosphors, yttrium aluminum garnet (YAG) phosphors, sialon (β-SiAlON) phosphors, silicate (Silicate) phosphors, but the present invention is not limited thereto. In some embodiments, the light color conversion structure 203 may be a yellow phosphor. For example, the yellow phosphor may be yttrium aluminum garnet (YAG) phosphor. In some embodiments, the light color conversion structure 203 may include a green phosphor and a red phosphor. For example, the light color conversion structure 203 may include a green sialon phosphor and a red K2 SiF6:Mn 4 + In some embodiments, the light color conversion structure 203 may include a green phosphor and a combination of two red phosphors. For example, the light color conversion structure 203 may include a green SiAlON phosphor, a red K2 SiF6:Mn 4+ With red (Sr,Ca)AlSiN3:Eu 2 + .

[0078] In summary, the present invention provides a light source module that can be applied to the backlight of a display, a variety of light-emitting devices, and the like. Compared to the configuration of the comparative example in which the light-emitting surface is lower than the cup shell, the light source module provided by the present invention adopts a configuration in which the light-emitting surface is higher than the cup shell, which reduces the reflection or absorption of the light emitted by the light source by the packaging material layer or the cup shell and effectively increases the light output angle of the light source module. In this way, the light spot generated by the light source module on the light output plane is enlarged, and the uneven brightness of continuous light spots on the light output plane is reduced when the pitch between the light source modules is large. In addition, the light source module provided by the present invention can also reduce the use of light-emitting diodes, thereby reducing manufacturing costs.

[0079] Although the present invention has been disclosed as above with specific preferred embodiments, it is not intended to limit the present invention. Anyone familiar with this technology can make slight changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be based on the definition of the attached claims.

Claims

1. A light source module, comprising: substrate; A light-emitting element is disposed on the substrate and has a light-emitting surface; as well as A cup shell is arranged on the substrate and has a top surface. The cup shell is arranged around the light-emitting element to form a containing space, wherein the vertical distance from the light-emitting surface of the light-emitting element to the substrate is greater than or equal to the vertical distance from the top surface of the cup shell to the substrate.

2. The light source module as claimed in claim 1, further comprising a wire structure disposed on the substrate, the wire structure connecting the substrate and the light-emitting element, wherein at least a portion of the wire structure is farther away from the substrate than the top surface of the cup shell.

3. The light source module as claimed in claim 2, wherein the wire structure comprises at least one metal wire, the metal wire having an arc structure, wherein a vertical distance from a highest point of the arc structure above the substrate to the substrate is greater than a vertical distance from the top surface of the cup shell to the substrate. 4 . The light source module as claimed in claim 2 , further comprising a lens structure disposed on the substrate and covering the light emitting element, the cup shell and the wire structure. 5 . The light source module as claimed in claim 4 , wherein the lens structure comprises a convex lens, and a ratio of a thickness of the convex lens on the substrate to a height of the cup shell on the substrate is between 1:3 and 1:

5. 6 . The light source module as claimed in claim 5 , wherein a ratio of a thickness of the convex lens on the substrate to a height of the cup shell on the substrate is between 1:4 and 1:4.

5. 7 . The light source module as claimed in claim 4 , wherein a thickness of the lens structure is between 0.68 mm and 0.88 mm. 8 . The light source module as claimed in claim 4 , wherein a height of the cup shell is between 0.13 mm and 0.15 mm. 9 . The light source module as claimed in claim 1 , wherein the light transmittance of the material of the cup shell is between 15% and 50%. 10 . The light source module as claimed in claim 1 , wherein a thickness of the cup shell is between 0.15 mm and 0.20 mm.

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