TW201704824A - Light source module - Google Patents

Abstract

A light source module including a frame, at least one light source, a diffusion sheet, at least one lens structure and at least one supporting unit is provided. The light source is disposed in the frame. The diffusion sheet is disposed in light path of the light beam emitted by the light source. The lens structure is disposed between the light source and the diffusion sheet, and the lens structure includes a top surface facing the diffusion sheet. The supporting unit is disposed between the lens structure and the diffusion sheet. The supporting unit includes at least one supporting element, and the supporting element is disposed along the periphery of the top surface. The supporting element includes a supporting surface and a connecting surface opposite to the supporting surface, the supporting surface contacts to the diffusion sheet, and the connecting surface is opposite to the top surface. Area of the connecting surface is A', area of the top surface of the lens structure is A, and 0.03A ≤ A' ≤ 0.5A.

Description

Light source module

The present invention relates to a light source module, and more particularly to a light source module in which a support unit is disposed on a lens structure.

The liquid crystal display mainly includes components such as a backlight module, a display panel, and an outer frame. According to the direction of the light source, the backlight module can be further divided into an edge light type backlight module and a direct type backlight module. Taking a direct type backlight module as an example, the direct type backlight module includes a back plate, a light source assembly, a reflection sheet, a diffusion sheet, an optical film, and an outer frame, wherein the light source assembly comprises a circuit board and a light emitting diode disposed on the circuit board. The body and the secondary lens are combined, and the function of the secondary lens is to distribute the light emitted by the light-emitting diode at a wide angle to uniformize the brightness of the backlight module.

In order to support the weight of the diffusion sheet and maintain the spacing between the reflective sheet and the diffusion sheet (ie, optical distance, referred to as OD), a support column is usually disposed on the back cover as a member for carrying the diffusion sheet. Thereby maintaining the spacing between the reflective sheet and the diffusing sheet. However, in the pursuit of thinning, the distance between the reflective sheet and the diffusing sheet is narrower and narrower, which causes a slight fluctuation of the diffusing sheet (for example, the tilt of the diffusing sheet), which will affect the uniformity of the planar light source, and therefore, In the case where the distance between the reflection sheet and the diffusion sheet is narrowed, it is necessary to increase the number of support columns, thereby maintaining the distance between the light source assembly and the diffusion sheet.

However, in the case where the number of support columns is increased, the structure in which the support post and the back plate are engaged is increased, which not only causes an increase in the manufacturing cost of the backlight module, but also causes subsequent image defects on the display. Therefore, how to improve the above problems is the focus of the relevant personnel in the field.

The "Prior Art" section is only intended to aid in understanding the present invention, and thus the disclosure of the prior art paragraphs may contain some conventional techniques that are not known to those of ordinary skill in the art. The matters disclosed in the "Prior Art" section, which do not represent the subject matter or the problems to be solved by one or more embodiments of the present invention, are known or recognized by those of ordinary skill in the art prior to the present application.

One of the objectives of the present invention is to provide a light source module in which a support unit is disposed on a lens structure for supporting a diffusion sheet, thereby achieving cost reduction and image quality improvement in the case where the optical distance (OD) is shortened.

It is still another object of the present invention to provide a lens structure on which a support unit is disposed for supporting a diffusion sheet, thereby achieving the effect of reducing cost and improving picture quality in the case where the optical distance (OD) is shortened.

It is still another object of the present invention to provide a supporting unit for supporting a diffusion sheet, thereby achieving the effect of reducing cost and improving picture quality in the case where the optical distance (OD) is shortened.

To achieve some or all of the above or other objects, the present invention provides a light source module including a frame, at least one light source, a diffusion sheet, at least one lens structure, and at least one support unit. The light source is arranged in the frame. The diffuser is disposed on the optical path of the light emitted by the light source. Lens structure Placed between the light source and the diffuser, the lens structure includes a top surface facing the diffuser. The support unit is disposed between the lens structure and the diffusion sheet. The support unit includes at least one support disposed along a circumference of the top surface. The support member includes opposing support surfaces and engagement surfaces that contact the diffusion sheet, the engagement surface being opposite the top surface. The area of the joint surface is A', the area of the top surface of the lens structure is A, and 0.03A ≦ A' ≦ 0.5A.

In an embodiment of the invention, the support member of the support unit is joined to the top surface of the lens structure by a joint surface.

In an embodiment of the invention, the support unit and the lens structure are integrally formed.

In an embodiment of the invention, the number of the at least one supporting member of the supporting unit is plural, and the total area of the engaging surfaces of the supporting members is A", and 0.03A ≦ A" ≦ 0.5A.

In an embodiment of the invention, the light source module further includes a reflective sheet disposed on the light source, wherein the height of the lens structure in the direction of the vertical diffusion sheet is X, and the height of the support member in the direction is Y, and the reflection The spacing between the sheet and the diffusion sheet is H, and 0.9H ≦ X + Y ≦ 1.1H.

In an embodiment of the invention, the light source comprises a substrate and a plurality of light-emitting elements disposed on the substrate, and the number of the at least one lens structure is plural. The lens structures correspond to the light-emitting elements, and the support unit is disposed on the light-emitting elements. At least one of the lens structures is between the diffusion sheet.

In an embodiment of the invention, the support member of the support unit further includes an outer surface connecting the support surface and the joint surface and a normal line passing through the joint between the support surface and the outer surface and perpendicular to the diffusion sheet. The normal line has a first angle with the outer surface, the first angle is θ ₁ , and 0 degrees ≦ θ ₁ ≦ 45 degrees.

In an embodiment of the invention, the outer surface of the support member and the top surface of the lens structure have a second angle, the second angle is θ ₂ , and 45 degrees ≦ θ ₂ ≦ 135 degrees.

In an embodiment of the present invention, the lens structure further includes a side surface connected to the top surface, the support unit further includes a socket portion, the support member is disposed on the socket portion, and the support unit is sleeved on the lens portion The side of the structure.

In an embodiment of the invention, the light source module further includes a reflective sheet disposed on the light source, wherein the height of the sleeve portion in the direction of the vertical diffusion sheet is Z, and the spacing between the reflective sheet and the diffusion sheet It is H and 0.05 (X + Y) ≦ Z ≦ 0.5 (X + Y).

In an embodiment of the invention, the outer shape of the support member of the support unit includes a sheet-like body, a columnar body and an annular wall body.

In order to achieve one or a part or all of the above or other purposes, another aspect of the present invention provides a lens structure for a light source module, the light source module including at least one light source and an optical path disposed on the light emitted by the light source The upper diffusion sheet, the lens structure includes a lens body and a support unit. The lens body is disposed between the light source and the diffusion sheet. The lens body includes a top surface facing the diffusion sheet. The support unit is disposed between the lens body and the diffusion sheet, and the support unit includes at least one support disposed along a circumference of the top surface. The support member includes opposing support surfaces for engaging the diffusion sheet, the engagement surface being opposite to the top surface. The area of the joint surface is A', the area of the top surface of the lens structure is A, and 0.03A ≦ A' ≦ 0.5A.

In an embodiment of the invention, the support member of the support unit is joined to the top surface of the lens structure by a joint surface.

In an embodiment of the invention, the support unit and the lens body are integrally formed.

In an embodiment of the invention, the number of the at least one support member of the support unit is plural, and the total area of the joint surfaces of the support members is It is A" and 0.03A≦A"≦0.5A.

In an embodiment of the invention, the support member of the support unit further includes an outer surface connected between the support surface and the joint surface and a normal line passing through the joint between the support surface and the outer surface and perpendicular to the diffusion sheet. The first angle is between the normal and the outer surface, the first angle is θ ₁ , and 0 degrees ≦ θ ₁ ≦ 45 degrees.

In an embodiment of the invention, the outer surface of the support member and the top surface of the lens body have a second angle, the second angle is θ ₂ , and 45 degrees ≦ θ ₂ ≦ 135 degrees.

In an embodiment of the invention, the lens body further includes a side surface connected to the top surface, the support unit further includes a sleeve portion, the support member is disposed on the sleeve portion, and the support unit is sleeved on the lens body by the sleeve portion The side.

In an embodiment of the invention, the height of the sleeve portion in the direction of the vertical diffusion sheet is Z, the height of the lens body in the direction is X, the height of the support member in the direction is Y, and 0.05 (X) +Y) ≦Z≦0.5(X+Y).

In an embodiment of the invention, the outer shape of the support member of the support unit includes a sheet-like body, a columnar body and an annular wall body.

In order to achieve one or a part or all of the above or other purposes, another aspect of the present invention provides a support unit for a light source module, wherein the light source module includes at least one light source and an optical path disposed on the light emitted by the light source. And a lens structure disposed between the light source and the diffusion sheet, the lens structure includes a top surface facing the diffusion sheet, and the support unit includes at least one support member. The support member is disposed on a periphery of a top surface of the lens structure, and the support member includes opposite support surfaces and a joint surface for contacting the diffusion sheet, the joint surface being opposite to the top surface. The area of the joint surface is A', the area of the top surface of the lens structure is A, and 0.03A ≦ A' ≦ 0.5A.

In an embodiment of the invention, the support member is a joint surface Bonded to the top surface of the lens structure.

In an embodiment of the invention, the number of the at least one supporting member is plural, and the total area of the engaging surfaces of the supporting members is A" and 0.03A ≦ A" ≦ 0.5A.

In an embodiment of the invention, the support member further includes an outer surface connected between the support surface and the joint surface and a normal line passing through the joint between the support surface and the outer surface and perpendicular to the diffusion sheet, the normal There is a first angle with the outer surface, the first angle is θ ₁ , and 0 degrees ≦ θ ₁ ≦ 45 degrees.

In an embodiment of the invention, the outer surface of the support member and the top surface of the lens structure have a second angle, the second angle is θ ₂ , and 45 degrees ≦ θ ₂ ≦ 135 degrees.

In an embodiment of the invention, the lens structure further includes a side surface connected to the top surface, the support unit further includes a socket portion, the support member is disposed on the socket portion, and the support unit is sleeved on the lens structure by the sleeve portion The side.

In an embodiment of the invention, the shape of the support member includes a sheet-like body, a columnar body, and an annular wall.

The light source module of the embodiment of the invention is provided with at least one support member on the periphery of the top surface of the lens structure for supporting the diffusion sheet and maintaining the distance between the diffusion sheet and the light source, and further, the area A of the support member joint surface 'With the area A of the top surface of the lens structure, satisfying the relationship of 0.03A ≦A' ≦ 0.5A, under such a structural design, it is not necessary to additionally configure a conventional support column on the back plate of the frame, and the conventional support column is omitted. The structure that is engaged with the backboard, and even in the case where the optical distance (OD) is shortened, it is not necessary to increase the number of conventional support columns, and the effect of reducing the cost and improving the picture quality of the display device is effectively achieved.

The above and other objects, features, and advantages of the present invention will become more apparent and understood. described as follows.

1, 1a‧‧‧ backlight module

11‧‧‧Frame

12‧‧‧Light source

13‧‧‧Diffuser

14‧‧‧ lens structure

15, 15a‧‧‧Support unit

16‧‧‧reflector

17‧‧‧Optical Membrane

111‧‧‧ Backplane

112‧‧‧ front box

121‧‧‧Substrate

122‧‧‧Lighting elements

140‧‧‧ lens body

141‧‧‧ top

142‧‧‧ side

143‧‧‧Fixed pins

144‧‧‧ Periphery

151, 151a~151e‧‧‧support

152‧‧‧Support surface

153‧‧‧ joint surface

154‧‧‧ outer surface

155‧‧‧ Sockets

X, Y‧‧‧ height

H‧‧‧ spacing

Z‧‧‧ Height

A, A’, A” ‧ ‧ area

θ ₁ , θ ₂ ‧‧‧ angle

L‧‧‧ normal

1 is a cross-sectional view of a light source module according to an embodiment of the present invention.

2 is a schematic perspective view of the lens structure and the supporting unit shown in FIG. 1.

3 is a side elevational view of the lens structure, the support unit, the reflection sheet, and the diffusion sheet shown in FIG. 1.

4A-4E are schematic views showing the appearance of the support members of different embodiments.

FIG. 5 is a cross-sectional view of a light source module according to another embodiment of the present invention.

FIG. 6 is a schematic view showing the appearance of the lens structure and the supporting unit shown in FIG. 5.

Figure 7 is a side elevational view of the lens structure, support unit and reflective sheet of Figure 5.

The above and other technical contents, features and advantages of the present invention will be apparent from the following detailed description of the preferred embodiments. The directional terms mentioned in the following embodiments, such as up, down, left, right, front or back, etc., are only directions referring to the additional drawings. Therefore, the directional terminology used is for the purpose of illustration and not limitation.

1 to FIG. 3, FIG. 1 is a schematic cross-sectional view of a light source module according to an embodiment of the present invention. 2 is a schematic perspective view of the lens structure and the supporting unit shown in FIG. 1. 3 is a side elevational view of the lens structure, the support unit, the reflection sheet, and the diffusion sheet shown in FIG. 1. As shown in FIG. 1 and FIG. 2 , the light source module 1 of the embodiment includes a frame 11 , at least one light source 12 , and a diffusion sheet 13 . At least one lens structure 14, at least one support unit 15, and a reflective sheet 16. The light source 12 is disposed in the frame 11. The diffusion sheet 13 is disposed on an optical path of light (not shown) emitted by the light source 12. The lens structure 14 is disposed between the light source 12 and the diffusion sheet 13 , and the lens structure 14 includes a lens body 140 and a top surface 141 of the lens body 140 facing the diffusion sheet 13 . The support unit 15 is disposed between the lens structure 14 and the diffusion sheet 13 , and the support unit 15 includes at least one support 151 disposed along the circumference 144 of the top surface 141 of the lens structure 14 . The support member 151 includes an opposite support surface 152 and a joint surface 153. The support member 151 contacts the diffusion sheet 13 with the support surface 152 to support the diffusion sheet 13, and the joint surface 153 of the support member 151 is opposite to the top surface 141 of the lens structure 14. The reflection sheet 16 is disposed on the light source 12. As shown in FIG. 3, the area of the joint surface 153 of the support member 151 is A', the area of the top surface 141 of the lens structure 14 is A, and the joint surface 153 and the top surface 141 satisfy 0.03A ≦ A' ≦ 0.5A. Relationship. Specifically, the area A' of the joint surface 153 is the projected area on which the joint surface 153 is vertically projected on the diffusion sheet 13. Similarly, the area A of the top surface 141 is the projected area on which the top surface 141 is vertically projected on the diffusion sheet 13.

Further, when the size of the support member 151 is too small (the area of the joint surface 153 is too small A'), the support member 151 can support the diffusion sheet 13 with insufficient supporting force and is easily broken, but when the size of the support member 151 is too large (The area of the joint surface 153 is too large A'), the support member 151 blocks the light emitted from the lens structure 14 and affects the optical performance of the overall light source module 1, but between the joint surface 153 and the top surface 141 of the present embodiment. Since the relationship of 0.03A ≦ A' ≦ 0.5A is satisfied, the above-described problem when the size of the support member 151 is too small or too large can be avoided.

The detailed structure of the light source module of this embodiment will be further described below.

As shown in FIG. 1 , the frame 11 of the present embodiment includes a back cover 111 and a front bezel 112 , and the light source 12 is disposed on the back plate 111 , for example, but the invention is not limited thereto. . The light source 12 of the present embodiment includes a substrate 121 (for example, a circuit board) and a plurality of light-emitting elements 122 (for example, light emitting diodes (LEDs)) disposed on the substrate 121. The reflective sheet 16 is disposed, for example. On the substrate 121, the invention is not limited thereto. The number of the lens structures 14 is, for example, plural. In the present embodiment, the lens structures 14 are disposed on the substrate 121 of the light source 12 through the reflective sheets 16 through the fixing pins 143 extending from the lens body 140, for example. However, the present invention is not limited thereto. In other embodiments, the lens structure 14 is directly disposed on the reflective sheet 16 through the fixed pin 143, and the number of the lens structures 14 depends on the configuration of the light-emitting element 122. The number and the lens structures 14 and the light-emitting elements 122 correspond to each other.

It should be noted that, in the present embodiment, the light source module 1 further includes an optical film group 17 disposed on the diffusion sheet 13, but the optical film group 17 is a conventional technical means in the technical field and is not the present invention. Importantly, therefore, the structure of the optical film group 17 will not be described in the description.

As shown in FIG. 1 and FIG. 2, the number of the support members 151 of the support unit 15 described in this embodiment is, for example, a plurality, and the support members 151 are disposed along the circumference 144 of the top surface 141 of each lens structure 14, and these The joint surface 153 of the support member 151 is, for example, bonded to the top surface 141 of each lens structure 14, but the invention is not limited thereto. In other embodiments, the support members 151 of the support unit 15 and each lens structure 14 is, for example, integrally formed, that is, the support members 151 and the lens main body 140 and the fixed pin 143 of each lens structure 14 are integrally formed. As shown in FIG. 3, the area of the joint surface 153 of the support members 151 engaged with the top surface 141 of each lens structure 14 is collectively A", and The relationship between the area total A' of these joint faces 153 and the top face 141 also satisfies the relationship of 0.03A ≦ A" ≦ 0.5A. In the present embodiment, the number of the support members 151 is, for example, three, but the present invention does not limit the number of the support members 151, and the number of the support members 151 may be increased or decreased depending on the actual situation.

In this embodiment, each lens structure 14 is provided with a supporting unit 15 , that is, each lens structure 14 is provided with one or more supporting members 151 , but the invention is not limited thereto. In other embodiments, the support unit 15 can be selectively disposed in at least one of the lens structures 14 without the need to configure the support unit 15 on each of the lens structures 14. In addition, the material of the lens structure 14 and the supporting unit 15 of the present embodiment includes polycarbonate (Polycarbonate, PC for short) and polymethylmethacrylate (PMMA), and the material of the lens structure 14 and the supporting unit 15 is, for example, Is the same or not the same. For example, in an embodiment, the material of the lens structure 14 and the supporting unit 15 is also polycarbonate (PC) or polymethyl methacrylate (PMMA). In another embodiment, the lens structure 14 is The material of the support unit 15 is polymethyl methacrylate (PMMA) and polycarbonate (PC), respectively, but the invention is not limited thereto.

As shown in FIGS. 1 and 3, the height of the lens structure 14 of the present embodiment in the direction of the vertical diffusion sheet 13 is X, and the height of each support member 151 of the support unit 15 in the direction of the vertical diffusion sheet 13 is Y. On the other hand, the distance between the reflection sheet 16 and the diffusion sheet 13 is H, and the height X of the lens structure 14, the height Y of the support member 15, and the pitch H satisfy the relationship of 0.9H≦X+Y≦1.1H. For example, the type of the lens structure 14 includes a reflective lens structure and a refractive lens structure (in the present embodiment, mainly a reflective lens structure), in the case where the lens structure 14 is a reflective lens structure, The height X of the lens structure 14 ranges between 5 and 15 mm, and the reflective sheet 16 and diffusion are applied. The pitch H of the sheet 13 ranges from 6 to 20 mm. From the above relationship, the height Y of the support member 15 can be calculated to be between 1 and 15 mm. In addition, in the case where the lens structure 14 is a refractive lens structure, the height X of the lens structure 14 ranges from 5 to 15 mm, and the applicable distance H between the reflection sheet 16 and the diffusion sheet 13 ranges from 20 to 20 Between 50 mm, through the above relationship, the height Y of the support member 15 can be calculated to be between 5 and 45 mm.

As shown in FIG. 3, each support member 151 of the support unit 15 of the present embodiment further includes an outer surface 154 connected between the support surface 152 and the joint surface 153 and a joint between the support surface 152 and the outer surface 154. And perpendicular to the normal line L of the diffusion sheet 13. The normal line L has a first angle θ ₁ with the outer surface 154 and 0 degrees ≦ θ ₁ ≦ 45 degrees. Specifically, the first angle θ ₁ between the normal line L and the outer surface 154 is located at the support 151. The angle inside. The first angle θ ₁ may indicate the taper of the support member 151 when the outer shape of the support member 151 is, for example, a columnar body. In the present embodiment, the support surface 152 is, for example, a flat surface, but the invention is not limited thereto. In other embodiments, the support surface 152 may be, for example, a curved surface. In addition, the outer surface 154 of each support member 151 has a second angle θ ₂ with the top surface 141 of the lens structure 14 and 45 degrees ≦ θ ₂ ≦ 135 degrees. Specifically, the outer surface 154 of the support member 151 is The second included angle θ ₂ between the top faces 141 of the lens structure 14 is an angle outside the support member 151. The second angle θ ₂ may indicate the degree of inclination of the support member 151 outward (toward the outer side of the top surface 141) or inward (toward the inner surface of the top surface 141).

As shown in FIG. 1 to FIG. 3, the shape of the support member 151 of the support unit 15 of the present embodiment is, for example, a columnar body, but the invention is not limited thereto. In other embodiments, the support member 151 can be Has a variety of different appearance shapes. For example, as shown in FIG. 4A, the shape of the support member 151a is, for example, a sheet-like body, so that the support surface 152 of each of the support members 151a and the diffusion sheet 13 has a small area, and therefore, does not affect the overall light source mode. The optical representation of Group 1, wherein the second included angle θ _{2 is,} for example, 90 degrees (not shown). As shown in FIG. 4B, the outer shape of the support member 151b is, for example, an annular wall body capable of providing a relatively stable supporting force of the diffusion sheet 13, wherein the second included angle θ _{2 is,} for example, 90 degrees (not shown). As shown in FIG. 4C, the shape of the support member 151c is, for example, an annular wall body and the support surface 152 is wavy. In the present embodiment, the support surface 152 of the support member 151c has a regular continuous wave shape, for example, the present invention. It is not limited thereto. In other embodiments, the support surface 152 of the support member 151c is, for example, a continuous wave shape with irregularities, and the support surface 152 of the support member 151c is a wave-shaped annular wall body. In addition to the stable supporting force of the diffusion sheet 13, the diffusion sheet 13 can be adjusted to a horizontal state by the continuous wave shape of the support surface 152 when the diffusion sheet 13 is inclined, wherein the second angle θ _{2 is,} for example, 90 degrees (Fig. Mark). As shown in FIG. 4D, the shape of the support member 151d is, for example, an outwardly inclined sheet-like body. Except that the support member 151d has a sheet-like body that does not affect the optical performance of the overall light source module 1, the sheet is outwardly inclined. The body can also increase the extent of the area supporting the diffusion sheet 13, wherein the second included angle θ _{2 is,} for example, 45 degrees (not shown). As shown in FIG. 4E, the outer shape of the support member 151e is, for example, an outwardly inclined annular wall body. In addition to providing a relatively stable supporting force of the diffusion sheet 13, the outwardly inclined annular wall body can also increase the supporting diffusion sheet 13. The area range, wherein the second angle θ _{2 is,} for example, 45 degrees (not shown).

Please refer to FIG. 5 and FIG. 6. FIG. 5 is a cross-sectional view of a light source module 1a according to another embodiment of the present invention. FIG. 6 is a schematic view showing the appearance of the lens structure 14 and the supporting unit 15a shown in FIG. 5. As shown in FIG. 5 and FIG. 6 , the light source module 1 a of the present embodiment is similar to the light source module 1 shown in FIG. 1 , except that the support unit 15 a of the embodiment includes a socket portion 155 and is disposed on the socket. Support 151 on portion 155. In this embodiment, the support unit 15a The sleeve 155 is sleeved on the peripheral edge 144 and the side surface 142 of the top surface 141 of the lens structure 14 such that the support member 151 is located at the periphery 144 of the top surface 141 of the lens structure 14, wherein the side surface 142 is coupled to the top surface 141. In addition, the user can select an appropriate lens structure 14 according to actual needs, and then the support unit 15a is sleeved on the lens structure 14 with the socket portion 155. Since the support unit 15a can be applied to the lens structure 14 of different aspects, It is convenient for users to choose the practicality of use.

Please refer to FIG. 7. FIG. 7 is a schematic side view of the lens structure 14, the support unit 15a and the reflection sheet 16 shown in FIG. The height of the sleeve portion 155 of the support unit 15a of the present embodiment in the direction of the vertical diffusion sheet 13 is Z, and the distance between the reflection sheet 16 and the diffusion sheet 13 is H, and the height Z of the socket portion 155 is spaced. A relationship of 0.05 (X + Y) ≦ Z ≦ 0.5 (X + Y) is satisfied between H. Further, when the height Z of the socket portion 155 is too small, the support unit 15a is easily detached from the lens structure 14 and cannot be stably disposed on the lens structure 14, but when the height Z of the socket portion 155 is too large, the socket portion 155 occludes the light emitted from the lens structure 14 to affect the optical performance of the overall light source module 1a, and the height Z and the spacing H of the socket portion 155 of the present embodiment satisfy 0.05 (X+Y) ≦Z ≦ 0.5. The relationship of (X+Y) can avoid the problems caused when the height Z of the socket portion 155 is too small or too large.

As shown in FIG. 5 to FIG. 7 , the shape of the support member 151 of the support unit 15 a of the embodiment is, for example, a columnar body, but the invention is not limited thereto. In other embodiments, the support member 151 can be Having a plurality of different appearance shapes, such as a sheet-like body, an annular wall body, an annular wall body having a wavy support surface, an outwardly inclined sheet-like body, and an outwardly inclined annular wall body, the support member 151 The different appearance shapes are similar to the appearance shapes of the support members shown in FIGS. 4A to 4E, respectively, and will not be described in detail herein.

In summary, the embodiments of the present invention can achieve the following advantages or effects At least one of them. The light source module of the embodiment of the invention is provided with at least one support member on the periphery of the top surface of the lens structure for supporting the diffusion sheet and maintaining the distance between the diffusion sheet and the light source, and further, the area A of the support member joint surface 'With the area A of the top surface of the lens structure, satisfying the relationship of 0.03A ≦A' ≦ 0.5A, under such a structural design, it is not necessary to additionally configure a conventional support column on the back plate of the frame, and the conventional support column is omitted. The structure that is engaged with the backboard, and even in the case where the optical distance (OD) is shortened, it is not necessary to increase the number of conventional support columns, and the effect of reducing the cost and improving the picture quality of the display device is effectively achieved. In addition, the supporting unit is sleeved on the lens structure by the sleeve portion, and can be applied to different lens structures, and has the utility of being convenient for the user to select and use.

The above is only the preferred embodiment of the present invention, and the scope of the invention is not limited thereto, that is, the simple equivalent changes and modifications made by the scope of the invention and the description of the invention are All remain within the scope of the invention patent. In addition, any of the objects or advantages or features of the present invention are not required to be achieved by any embodiment or application of the invention. In addition, the abstract sections and headings are only used to assist in the search of patent documents and are not intended to limit the scope of the invention. In addition, the terms "first", "second" and the like mentioned in the specification or the scope of the claims are only used to name the elements or distinguish different embodiments or ranges, and are not intended to limit the number of elements. Upper or lower limit.

1‧‧‧Backlight module

11‧‧‧Frame

12‧‧‧Light source

13‧‧‧Diffuser

14‧‧‧ lens structure

15‧‧‧Support unit

16‧‧‧reflector

17‧‧‧Optical diaphragm group

111‧‧‧ Backplane

112‧‧‧ front box

121‧‧‧Substrate

122‧‧‧Lighting elements

140‧‧‧ lens body

141‧‧‧ top

142‧‧‧ side

143‧‧‧Fixed pins

151‧‧‧Support

Claims (27)

A light source module includes: a frame; at least one light source disposed in the frame; a diffusion sheet disposed on an optical path of a light emitted by the light source; at least one lens structure disposed on the light source and the diffusion Between the sheets, the lens structure includes a top surface facing the diffusion sheet; and at least one supporting unit disposed between the lens structure and the diffusion sheet, the supporting unit including at least one support disposed along a circumference of the top surface The support member includes an opposite support surface and a joint surface, the support surface contacts the diffusion sheet, the joint surface is opposite to the top surface, wherein the joint surface has an area A', and the top surface of the lens structure The area is A, and 0.03A ≦ A' ≦ 0.5A. The light source module of claim 1, wherein the support member of the support unit is joined to the top surface of the lens structure by the joint surface. The light source module of claim 1, wherein the supporting unit and the lens structure are integrally formed. The light source module of claim 1, wherein the number of the at least one support member of the support unit is plural, and the total area of the joint surfaces of the support members is A", and 0.03A ≦A”≦0.5A. The light source module of claim 1, further comprising a reflective sheet disposed on the light source, wherein the lens structure is perpendicular to the diffusion sheet The height in the direction is X, the height of the support in the direction is Y, the distance between the reflection sheet and the diffusion sheet is H, and 0.9H≦X+Y≦1.1H. The light source module of claim 1, wherein the light source comprises a substrate and a plurality of light emitting elements disposed on the substrate, and the number of the at least one lens structure is plural, and the lens structures correspond to The light-emitting elements are disposed between at least one of the lens structures and the diffusion sheet. The light source module of claim 1, wherein the support member of the support unit further comprises an outer surface connecting the support surface and the joint surface and a passage between the support surface and the outer surface The junction is perpendicular to the normal of the diffuser, the normal having a first angle with the outer surface, the first angle being θ ₁ and 0 degrees ≦ θ ₁ ≦ 45 degrees. The light source module of claim 7, wherein the outer surface of the support member and the top surface of the lens structure have a second angle, the second angle being θ ₂ and 45 degrees ≦ θ ₂ ≦ 135 degrees. The light source module of claim 1, wherein the lens structure further comprises a side connected to the top surface, the support unit further comprises a set of joints, the support member is disposed on the sleeve portion, and the support member is disposed on the sleeve portion The support unit is sleeved on the side of the lens structure with the sleeve portion. The light source module of claim 9, further comprising a reflective sheet disposed on the light source, wherein the socket is perpendicular to the diffusion sheet The height in the direction is Z, the distance between the reflection sheet and the diffusion sheet is H, and 0.05 (X + Y) ≦ Z ≦ 0.5 (X + Y). The light source module of claim 1, wherein the support member has an outer shape including a one-piece body, a columnar body and an annular wall body. A lens structure for a light source module, the light source module comprising at least one light source and a diffusion sheet disposed on an optical path of a light emitted by the light source, the lens structure comprising: a lens body disposed at the Between the light source and the diffusion sheet, the lens body includes a top surface facing the diffusion sheet; and a supporting unit disposed between the lens body and the diffusion sheet, the support unit including at least one periphery along the top surface a support member, the support member includes an opposite support surface and an engagement surface for contacting the diffusion sheet, the joint surface is opposite to the top surface, wherein the joint surface has an area A', the lens structure The area of the top surface is A, and 0.03A ≦ A' ≦ 0.5A. The lens structure of claim 12, wherein the support member of the support unit is joined to the top surface of the lens structure by the joint surface. The lens structure of claim 12, wherein the support unit is integrally formed with the lens body. The lens structure of claim 12, wherein the number of the at least one support member of the support unit is plural, and the plurality of support members The total area of the joint is A", and 0.03A ≦ A" ≦ 0.5A. The lens structure of claim 12, wherein the support member of the support unit further comprises an outer surface connected between the support surface and the joint surface and a passage between the support surface and the outer surface The junction is perpendicular to the normal of the diffuser, the normal having a first angle with the outer surface, the first angle being θ ₁ and 0 degrees ≦ θ ₁ ≦ 45 degrees. The lens structure of claim 16, wherein the outer surface of the support member and the top surface of the lens body have a second angle, the second angle being θ ₂ and 45 degrees ≦ θ ₂ ≦ 135 degrees. The lens structure of claim 12, wherein the lens body further comprises a side connected to the top surface, the support unit further comprises a set of joints, the support member is disposed on the sleeve portion, and the support The unit is sleeved on the side surface of the lens body. The lens structure of claim 18, wherein the height of the socket portion in a direction perpendicular to the diffusion sheet is Z, the height of the lens body in the direction is X, and the support member is in the direction The height is Y and 0.05 (X + Y) ≦ Z ≦ 0.5 (X + Y). The lens structure of claim 12, wherein the shape of the support member of the support unit comprises a sheet shape, a columnar body and an annular wall body. A support unit for a light source module, the light source module comprising at least one light source, a diffusion sheet disposed on an optical path of a light emitted by the light source, and a light source disposed between the light source and the diffusion sheet a lens structure, the lens structure includes a top surface facing the diffusion sheet, the support unit includes: at least one support member disposed on a periphery of the top surface of the lens structure, the support member includes an opposite support surface and a joint surface for contacting the diffusion sheet, the joint surface being opposite to the top surface, wherein the joint surface has an area A', the top surface area of the lens structure is A, and 0.03A≦A' ≦0.5A. The support unit of claim 21, wherein the support member is joined to the top surface of the lens structure by the joint surface. The support unit of claim 21, wherein the number of the at least one support member is plural, and the total area of the joint faces of the support members is A", and 0.03A ≦ A" ≦ 0.5 A. The support unit of claim 21, wherein the support member further comprises an outer surface connected between the support surface and the joint surface and a joint between the support surface and the outer surface A normal to the normal of the diffuser, the normal has a first angle with the outer surface, the first angle is θ ₁ , and 0 degrees ≦ θ ₁ ≦ 45 degrees. The support unit of claim 24, wherein the outer surface of the support has a second angle with the top surface of the lens structure, the second angle is θ ₂ , and 45 degrees ≦ θ ₂ ≦ 135 degrees. The support unit of claim 21, wherein the lens structure further comprises a side connected to the top surface, the support unit further comprises a set of joints, the support member is disposed on the sleeve portion, and the support The unit is sleeved on the side of the lens structure with the sleeve portion. The support unit according to claim 21, wherein the shape of the support member comprises a sheet body, a columnar body and an annular wall body.