TWM530416U - Light source module and backlight module - Google Patents

Abstract

A light source module including a light-emitting unit, a lens and a cover member is provided. The light-emitting unit emits a first color light. The lens covers the light-emitting unit, and the cover member covers the lens over. The cover member is doped with a quantum dot material, and the quantum dot material absorbs at least one portion of the first color light and emits a second color light. The peak wavelength value of the spectrum of the first color light is less than the peak wavelength value of the spectrum of the second color light. The quantum dot material includes a plurality of nano-units, and the nano-units have substantially the same size. Besides, a backlight module is also provided.

Description

Light source module and backlight module

The novel creation relates to a light source module and a backlight module.

At present, related technologies for applying quantum dots to light emitting diodes have received increasing attention. Materials with three dimensions (length, width, height) below 100 nm are generally referred to as quantum dots (QD). If the material is made into the size of a quantum dot, its electrons are easily excited to change the energy level. The electrons that are excited to change the energy level combine with the hole to emit light. In terms of application, the quantum dot can be integrated into the backlight module, so that when the backlight module is applied to the display panel, a wider color gamut can be realized.

There are several ways to integrate quantum dots into backlight modules. The first way is to arrange the film containing the quantum dot material above the light guide plate of the backlight module. However, after the blue light emitted by the light source module passes through the light guide plate, part of the blue light leaks from the periphery of the light guide plate, and does not completely pass through the film containing the quantum dot material, so that the overall light output of the backlight module is uneven. Another way is to use a tube containing quantum dot material. The component is disposed between the light source module of the side-lit backlight module and the light guide plate. However, the assembly cost of this setup architecture is high, and the chromaticity shift between the light incident side and the light exit side is large. In addition, one way is to directly package the quantum dot material with the light-emitting diode (On-Chip). However, since the temperature of the light-emitting diode wafer is relatively high (usually exceeding 100 ° C), the quantum dot material is subject to heat and damage, and its lifetime is reduced by 40% to 50%. Therefore, while achieving a wide color gamut, how to improve the uniformity of light output and reduce the cost is one of the focuses of relevant personnel in the field.

The "prior art" paragraphs are only intended to aid in understanding the novel creations, and thus the disclosure of the "prior art" section may contain some conventional techniques that are not known to those of ordinary skill in the art. The content disclosed in the "Prior Art" section does not represent a problem to be solved by the content or the creation of one or more embodiments of the present invention, which has been known or recognized by those of ordinary skill in the art prior to the present invention application. .

The novel creation provides a light source module with high light excitation efficiency and long service life.

The novel creation provides a backlight module, which can realize a wide color gamut when applied to a display panel, has better light uniformity, and has a low cost.

Other objects and advantages of the novel creation can be further understood from the technical features disclosed in the novel.

In order to achieve one or a part or all of the above or other purposes, the present invention An embodiment of the creation proposes a light source module comprising a light unit, a lens and a cover. The light emitting unit emits a first color light. The lens covers the light unit. The cover covers the lens. The cover member is doped with a quantum dot material, and the quantum dot material absorbs at least a portion of the first color light and excites the second color light. The peak value of the peak of the first color light spectrum is smaller than the wavelength value of the peak of the second color light spectrum. Quantum dot materials comprise a plurality of nanocells, and these nanocells have substantially the same size.

In an embodiment of the present invention, the cover member includes a cover layer and a cover lens. The cover layer is doped with a quantum dot material.

In an embodiment of the present invention, the cover layer has a tapered or spherical shape.

In an embodiment of the novel creation, the cover layer includes a top surface. The shape of the top surface is a polygon. The cover layer further includes a plurality of sides, and each side is connected to one side of the polygon.

In an embodiment of the present invention, the cover layer includes a top surface and a side surface connecting the top surfaces. The top surface has a circular shape and the sides are conical surfaces.

In an embodiment of the present invention, the light source module further includes an optical diffusing member covering the cover layer.

In an embodiment of the present invention, the cover member further includes a transparent cover, and the cover is covered with a cover.

In an embodiment of the present invention, the shape of the transparent cover is the same as the shape of the cover layer.

In an embodiment of the novel creation, the other part of the first color light Blending with the second color light to form white light.

In an embodiment of the present invention, the above-mentioned light emitting unit comprises a blue light emitting chip, and the quantum dot material is a quantum dot material that generates yellow light.

In order to achieve one or a part or all of the above or other purposes, an embodiment of the present invention provides a backlight module including at least one light source module and an optical adjustment member. The at least one light source module includes a light emitting unit, a lens, and a cover. The light emitting unit emits a first color light. The lens covers the light unit. The cover covers the lens. The cover member is doped with a quantum dot material, and the quantum dot material absorbs at least a portion of the first color light and excites the second color light. The optical adjustment component is disposed above the light source module to adjust the optical properties of the light source module. The peak value of the peak of the first color light spectrum is smaller than the wavelength value of the peak of the second color light spectrum. Quantum dot materials comprise a plurality of nanocells, and these nanocells have substantially the same size.

In an embodiment of the present invention, the backlight module further includes a backplane, and the light source module is disposed on the backplane. The cover member includes a cover layer and a transparent cover. The cover layer covers the lens, and the transparent cover covers the cover. The transparent cover includes a fixing member, and the transparent cover is fixed to the back plate by a fixing member.

In an embodiment of the present invention, the optical adjustment member includes an optical diffusion sheet disposed above the light source module.

In an embodiment of the present invention, the backlight module includes a light guide plate. The light source module is disposed beside the light guide plate, and another portion of the first color light and the second color light emitted by the light source module are incident on the light guide plate.

Based on the above, the embodiment of the novel creation has at least one of the following Advantages or effects. The backlight module of the novel creation embodiment and the cover of the light source module cover the lens, and the cover member is doped with the quantum dot material. The quantum dot material absorbs at least a portion of the first color light and excites the second color light, and the peak value of the peak of the first color light spectrum is smaller than the wavelength value of the peak of the second color light spectrum. Therefore, the second color light of the light source module can be directly excited by the quantum dot material in the cover member, so that the light excitation efficiency of the light source module is high, and the wide color gamut can be realized when the backlight module is applied to the display panel. In addition, each of the light source modules can emit another portion of the first color light and the second color light, so that the backlight module has better light uniformity. In addition, the cover members doped with the quantum dot material may be separately disposed on a light source module. At the same time, since the quantum dot material is not directly encapsulated in the light-emitting unit, the quantum dot material usage is saved, and the quantum dot material is not easily damaged by heat, so that the light source module and the backlight module have low cost and long service life. .

The above described features and advantages of the present invention will become more apparent and understood from the following description.

100‧‧‧Backlight module

110, 210a, 210b, 210c, 310a, 310b, 310c‧‧‧ light source module

112‧‧‧Lighting unit

114‧‧‧ lens

116, 216a, 216b, 216c, 316, 316' ‧ ‧ cover

117, 217a, 217b, 217c‧ ‧ cover

118, 218a, 218b, 218c, 318, 318'‧‧ ‧ transparent cover

120‧‧‧Optical adjustment parts

122‧‧‧Optical diffuser

124‧‧‧ Picture

130‧‧‧ Backplane

311a, 311b, 311c‧‧‧ optical diffusers

A‧‧‧ area

CL_1‧‧‧First color light

CL_2‧‧‧Second shade

NU‧‧Nee unit

QD‧‧‧Quantum Point Materials

SS1, SS2‧‧‧ side

TS1, TS2‧‧‧ top surface

WL, WL’‧‧‧ white light

FIG. 1A is a cross-sectional view of a backlight module according to an embodiment of the present invention.

FIG. 1B is an enlarged schematic view of the backlight module of the embodiment of FIG. 1A in a region A.

FIG. 1C is a schematic exploded view of the light source module of the embodiment of FIG. 1A.

2A is a schematic exploded view of a light source module according to another embodiment of the present invention.

2B is a schematic exploded view of a light source module according to still another embodiment of the present invention.

2C is a schematic exploded view of a light source module according to still another embodiment of the present invention.

3A is a cross-sectional view showing a light source module of another embodiment of the present invention.

FIG. 3B is a cross-sectional view showing a light source module according to still another embodiment of the present invention.

3C is a cross-sectional view showing a light source module according to still another embodiment of the present invention.

The above and other technical contents, features and effects 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 used to illustrate that it is not intended to limit the creation of this novel.

FIG. 1A is a schematic cross-sectional view of a backlight module according to an embodiment of the present invention. Please refer to FIG. 1A. In this embodiment, the backlight module 100 includes at least one light source module 110. The light source module 110 includes a light emitting unit 112, a lens 114, and a cover member 116. The lens 114 covers the light emitting unit 112, and the cover 116 covers the lens 114. In addition, the backlight module 100 of the present embodiment includes six light source modules 110, and the light source module 110 is configured to emit white light WL. However, in other embodiments, an appropriate number of light source modules 110 may be used according to the actual light-emitting requirements of the backlight module 100. The novel creation does not limit the number of the light source modules 110. In this embodiment, the light emitting unit 112 is a light emitting chip, such as a Light-Emitting Diode (LED) chip, an Organic Light-Emitting Diode (OLED) chip, or other types of light emitting chips. Electro-luminescence element Device). In some embodiments, the light-emitting unit 112 can also adopt other types of light-emitting elements according to different requirements, and the novel creation is not limited thereto.

In this embodiment, the backlight module 100 further includes an optical adjustment component 120 disposed above the light source module 110 for adjusting the optical properties of the light source module 110. Specifically, the backlight module 100 is a direct type backlight module, and the optical adjustment member 120 includes an optical diffusion sheet 122 and a cymbal 124. The optical diffuser 122 is disposed above the light source module 110 for scattering the white light WL emitted by the light source module 110 to form white light WL' emitted by the surface light source. In addition, the cymbal 124 is disposed between the light source module 110 and the optical diffusion sheet 122 , and the surface of the cymbal 124 having the cymbal facing the light source module 110 . In this embodiment, the optical diffuser 122 and the cymbal 124 are respectively used to make the light emitted by the light source module 110 (for example, white light WL) uniform and enhance the light output brightness, so that the backlight module 100 has Good optical effect. Specifically, the backlight module 100 can also include other types of optical films to appropriately adjust the light output of the light source module 110 according to actual optical requirements. The novel creation is not limited thereto. In addition, in some embodiments, the backlight module 100 can also be a side-lit backlight module, and the backlight module 100 can also include a light guide plate. In these embodiments, the light source module 110 is disposed beside the light incident surface of the light guide plate. At this time, the light emitted by the light source module 110 can be guided by the light guide plate, and the light is diffused by the optical diffusion sheet to adjust the light. This new creation is not limited to this.

Please continue to refer to Figure 1B. In the present embodiment, the cover member 116 of the light source module 110 includes a cover layer 117, and the cover layer 117 covers the lens 114. in particular, The cover layer 117 is doped with the quantum dot material QD. The quantum dot material QD contains a plurality of nanocells NU, and these nanocells NU have substantially the same size. Specifically, these nano-units NU are made of a semiconductor material. The nano-unit NU may be nanoparticles (NPs) having substantially equal particle diameters. In some embodiments, the nano unit NU may also be nano-rows (NRs), nanowires (NWs), or other nanostructures of substantially equal length. Not limited to this. In the present embodiment, the size of the nano cell NU, for example, the particle size of the nanoparticle, falls within the range of several nanometers to several tens of nanometers, so that the electrons of these nanocells NU are easily excited and changed. Energy level. The electrons in the nano cell NU that are excited to change the energy level combine with the hole to emit light. Specifically, the material of the quantum dot material QD may be zinc oxide (ZnO) or cadmium selenide (CdSe). However, in some embodiments, the material of the quantum dot material QD can also adopt a suitable quantum dot material according to different excitation light wavelength requirements, and the novel creation is not limited thereto.

In the present embodiment, the light emitting unit 112 emits the first color light CL_1. When the first color light CL_1 passes through the cover layer 117, the quantum dot material QD doped by the cover layer 117 absorbs at least a portion of the first color light CL_1 and excites the second color light CL_2, wherein the peak of the spectrum of the first color light CL_1 is located The wavelength value is smaller than the wavelength value at which the peak of the spectrum of the second color light CL_2 is located. Specifically, another portion of the first color light CL_1 and the second color light CL_2 are mixed to form white light WL. In this embodiment, the light emitting unit 112 includes a blue light emitting chip, such as a blue light emitting diode chip, and the light emitting unit 112 The emitted first color light CL_1 is, for example, blue light. Further, the quantum dot material QD is a quantum dot material that generates yellow light, and the quantum dot material QD absorbs at least a portion of the first color light CL_1 to excite the second color light CL_2, for example, yellow light. Specifically, another portion of the first color light CL_1 (for example, blue light) that is not absorbed by the quantum dot material QD is mixed with the second color light CL_2 (for example, yellow light) to form white light WL.

In fact, in some embodiments, the ratio of blue light to yellow light can be adjusted according to the requirements of the light source module. Alternatively, in some embodiments, the light source module may use a quantum dot material that produces other luminescent colors in combination with other luminescent color illuminating wafers, and the mixed light forms white light. Furthermore, the light source module can also use a quantum dot material of a suitable color to match a light-emitting chip of a suitable light-emitting color according to actual needs, and mix light to form light of other light-emitting colors. In addition, in some embodiments, the light source module may also be provided with a plurality of cover layers, and the cover layers are doped with quantum dot materials capable of generating different illumination colors, and the novel creation is not limited thereto. In addition, in the embodiment in which the backlight module 100 is a side-lit backlight module, another portion of the first color light CL_1 and the second color light CL_2 emitted by the light source module 110 are incident on the light guide plate. The other portions of the first color light CL_1 and the second color light CL_2 can be guided by the light guide plate and lighted out by the scattering adjustment of the optical diffusion sheet. The novel creation is not limited thereto.

Please continue to refer to FIG. 1A and FIG. 1B. In this embodiment, the backlight module 100 further includes a back plate 130. The light source module 110 is disposed on the back plate 130 , and the light source module 110 is disposed between the optical adjustment member 120 and the back plate 130 . In addition, the cover member 116 of the light source module 110 further includes a transparent cover 118. Specifically, the cover layer 117 can For example, the adhesive is attached to the lens 114, and the transparent cover 118 is covered with the cover 117 so that the cover 117 is more firmly attached to the lens 114. In this embodiment, the transparent cover 118 includes a fixing member (not shown), and the transparent cover 118 is fixed to the back plate 130 by a fixing member to achieve a good fixing effect. The fixing member is, for example, a general hook or a resilient hook, and the back panel 130 is provided with a member for fixing the hook, so that the transparent cover 118 can be fixed to the back panel 130 by the hook. In addition, in some embodiments, the cover layer 117 may be fixed to the lens 114 in other manners, and the transparent cover 118 may also be attached to the cover layer 117 with a glue material to sandwich the cover layer 117. Between the transparent cover 118 and the lens 114, the novel creation is not limited thereto. In addition, in some embodiments, a reflective sheet may be disposed on the back plate 130 for reflecting light from the light source module 110 and facing away from the optical diffusion sheet 122 to make the light (for example, white light WL). The light is radiated in the direction of the optical diffusion sheet 122, thereby increasing the light extraction efficiency of the backlight module 100.

FIG. 1C is a schematic exploded view of the light source module of the embodiment of FIG. 1A. Please refer to FIG. 1B and FIG. 1C at the same time. In the present embodiment, the cover layer 117 includes a top surface TS1 and a side surface SS1 connecting the top surface TS1. The shape of the top surface TS1 is circular, and the side surface SS1 is a conical surface. Further, the shape of the transparent cover 118 is the same as the shape of the cover layer 117. In some embodiments, the shape of the cover layer 117 may be tapered, spherical, square, or other shapes, and the shape of the transparent cover 118 may also be tapered, spherical, square, or other shapes. Further, the shape of the transparent cover 118 may be different from the shape of the cover layer 117. In addition, in other embodiments, the transparent cover 118 can also be doped with the quantum dot material QD, and the novel creation is not limited thereto.

In the present embodiment, the cover member 116 of the light source module 110 covers the lens 114, and the cover member 116 is doped with the quantum dot material QD. The quantum dot material QD absorbs at least a portion of the first color light CL_1 and excites the second color light CL_2, and the peak value of the peak of the spectrum of the first color light CL_1 is smaller than the wavelength value of the peak of the spectrum of the second color light CL_2. Therefore, the second color light CL_2 of the light source module 110 can be directly excited by the quantum dot material QD in the cover member 116, so that the light excitation efficiency of the light source module 110 is high. In addition, since the spectrum of the second color light CL_2 excited by the quantum dot material QD is concentrated, when the backlight module 100 including the light source module 110 is applied to the display panel to provide the backlight of the display panel, the display of the wide color gamut can be realized. effect. Further, the cover member 116 is disposed on the lens 114 of each of the light source modules 110 instead of arranging the film including the quantum dot material QD in the entire form of the optical adjustment member 120 of the backlight module 100. Therefore, the first color light CL_1 emitted by the light emitting unit 112 of each light source module 110 can be directly excited by the quantum dot material QD in the cover member 116 to generate the second color light CL_2. In other words, each of the light source modules 110 can emit a mixture of the first color light CL_1 and the second color light CL_2, so that the light uniformity of the backlight module 100 is better and the color is less likely to be color-shifted. In addition, since it is not necessary to arrange the film containing the quantum dot material QD in the form of a whole piece in the optical adjustment member 120 of the backlight module 100, the use amount of the quantum dot material QD can be saved, for example, saving the QD containing the quantum dot material. The film area is used in an amount of 50% to 60%, and the cost of the light source module 110 and the backlight module 100 is reduced. At the same time, the general quantum dot material QD contains heavy metal element cadmium (Cd). For example, when using quantum dot material QD with cadmium selenide, quantum dot material QD That is, it contains heavy metal element cadmium. Therefore, while the amount of QD used in the quantum dot material is saved, the amount of elemental cadmium is also reduced, and better environmental benefits can be obtained. In addition, since the quantum dot material QD is not directly encapsulated in the light emitting unit 112, the quantum dot material QD is not easily damaged by the high temperature of the light emitting unit 112, so that the quantum dot material QD can maintain a long service life.

2A is a schematic exploded view of a light source module according to another embodiment of the present invention, FIG. 2B is a schematic exploded view of a light source module according to another embodiment of the present invention, and FIG. 2C is a schematic view showing another embodiment of the present invention. A schematic diagram of the explosion of the light source module. In these embodiments, the light source module 210a, the light source module 210b, and the light source module 210c are all similar to the light source module 110 of the embodiment of FIGS. 1A-1C. For the components of the light source module 210a, the light source module 210b, and the light source module 210c, and related descriptions, reference may be made to the components of the light source module 110 of the embodiment of FIG. 1A to FIG. 1C and related descriptions, and details are not described herein again. Please refer to FIG. 2A. In this embodiment, the difference between the light source module 210a and the light source module 110 is as follows. The cover member 216a of the light source module 210a includes a cover layer 217a and a transparent cover 218a. The shape of the cover layer 217a is spherical, and the shape of the transparent cover 218a is the same as that of the cover layer 217a, that is, the shape of the transparent cover 218a is also spherical.

Next, please refer to FIG. 2B. In this embodiment, the difference between the light source module 210b and the light source module 110 is as follows. The cover 216b of the light source module 210b includes a cover layer 217b and a transparent cover 218b. The shape of the cover layer 217b is tapered, and the shape of the transparent cover 218b is the same as that of the cover layer 217b, that is, the shape of the transparent cover 218b is also tapered. In addition, please refer to FIG. 2C. In this embodiment, the light source module 210c The difference from the light source module 110 is as follows. The cover member 216c of the light source module 210c includes a cover layer 217c and a transparent cover 218c. The cover layer 217c includes a top surface TS2 and a plurality of side surfaces SS2. The shape of the top surface TS2 is a polygon, and each side surface SS2 is connected to one side of the polygon. Specifically, the top surface TS2 of the cover layer 217c has a rectangular shape, for example, a rectangle or a square. The cover layer 217c includes four side faces SS2 (the three side faces SS2 are shown in FIG. 2C, the other side faces SS2 are not shown because they are shielded), and the side faces SS2 are connected to one side of the rectangle. In some embodiments, the top surface TS2 of the cover layer 217c may be other polygons, and each side surface SS2 is connected to one side of the polygon, or the cover layer 217c may have other shapes. Limited. Further, in the present embodiment, the shape of the transparent cover 218c is the same as that of the cover layer 217c. However, in other embodiments, the shape of the transparent cover 218c may not be the same as the shape of the cover layer 217c, and the present invention is not limited thereto.

3A is a cross-sectional view showing a light source module according to another embodiment of the present invention, FIG. 3B is a cross-sectional view showing a light source module according to another embodiment of the present invention, and FIG. 3C is a schematic view showing another embodiment of the present invention. For a schematic cross-sectional view of the light source module, please refer to FIG. 3A, FIG. 3B and FIG. 3C. In these embodiments, the light source module 310a, the light source module 310b, and the light source module 310c are similar to the light source module 110 of the embodiment of FIGS. 1A-1C. For the components of the light source module 310a, the light source module 310b, and the light source module 310c, and related descriptions, reference may be made to the components of the light source module 110 of the embodiment of FIG. 1A to FIG. 1C and related descriptions, and details are not described herein again. Referring to FIG. 3A first, the difference between the light source module 310a and the light source module 110 is as follows. The light source module 310a further includes an optical diffuser 311a covering the cover layer 117. In this embodiment, the cover The cover 116 may not include the transparent cover 118. In addition, referring to FIG. 3B, the difference between the light source module 310b and the light source module 110 is as follows. The cover member 316 of the light source module 310b includes a cover layer 117 and a transparent cover 318, and the transparent cover 318 covers the cover layer 117. In addition, the light source module 310b further includes an optical diffuser 311b covering the cover layer 117. Specifically, the optical diffuser 311b is disposed between the cover layer 117 and the transparent cover 318. In addition, referring to FIG. 3C, the difference between the light source module 310c and the light source module 110 is as follows. The cover member 316' of the light source module 310c includes a cover layer 117 and a transparent cover 318', and the transparent cover 318' covers the cover layer 117. In addition, the light source module 310c further includes an optical diffuser 311c covering the cover layer 117. Specifically, the transparent cover 318' is disposed between the cover layer 117 and the optical diffuser 311c, that is, the optical diffuser 311c is located above the transparent cover 318'. In these embodiments, a transparent cover cover 117 may be selectively employed to provide a more secure attachment of the cover 117 to the lens 114. This novel creation is not limited in this respect.

Please continue to refer to FIG. 3A, FIG. 3B and FIG. 3C. In the embodiment of Fig. 3A, the optical diffuser 311a is an optical element having transflective properties, such as a printed diffuser or paper. The optical diffuser 311a can scatter light emitted by the light source module 310a. Specifically, when the plurality of light source modules 310a are applied to the backlight module (for example, the backlight module 100 described in FIG. 1A), the optical diffusing member 311a can cause the light emitted by the light source module 310a to reach the optical diffuser. (For example, the optical diffuser 122 described in FIG. 1A) is scattered before, so that the light emitted by each of the light source modules 310a is not excessively concentrated. Since the light emitted by the light source modules 310a is not excessively concentrated, the light source modules are not disposed between the adjacent light source modules 310a. The area of the group does not appear too dark, and the light and dark distribution of the backlight module is more uniform. When the backlight module is applied to a display panel, the problem that the brightness of the display panel is uneven, such as a mura defect, can be improved. In addition, since the light source module 310a of the present embodiment is doped with the quantum dot material QD, the light source module 310a of the present embodiment can achieve the functions described in the light source module 110 of the embodiment of FIGS. 1A to 1C. The backlight module applied to the light source module 310a of the present embodiment can also achieve the functions described in the backlight module 100 of the embodiment of FIGS. 1A-1C. Similarly, the light source module 310b of the embodiment of FIG. 3B and the light source module 310c of the embodiment of FIG. 3C can also achieve the functions described in the light source module 110 of the embodiment of FIG. 1A to FIG. 1C, and the light source of the embodiment of FIG. 3B The backlight module applied by the module 310b and the backlight module applied to the light source module 310c of the embodiment of FIG. 3C can also achieve the functions described in the backlight module 100 of the embodiment of FIGS. 1A to 1C.

In summary, in an embodiment of the present invention, the backlight module and the cover of the light source module cover the lens, and the cover member is doped with the quantum dot material. The quantum dot material absorbs at least a portion of the first color light and excites the second color light, and the peak value of the peak of the first color light spectrum is smaller than the wavelength value of the peak of the second color light spectrum. Therefore, the second color light of the light source module can be directly excited by the quantum dot material in the cover member, so that the light excitation efficiency of the light source module is high, and the wide color gamut can be realized when the backlight module is applied to the display panel. In addition, each of the light source modules can emit another portion of the first color light and the second color light, so that the backlight module has better light uniformity. In addition, the cover members doped with the quantum dot material may be separately disposed on a light source module. At the same time, since the quantum dot material is not directly encapsulated in the light emitting unit, The quantum dot material usage is saved, and the quantum dot material is not easily damaged by heat, so that the light source module and the backlight module are low in cost and long in service life.

However, the above is only a preferred embodiment of the novel creation, and it is not possible to limit the scope of the creation of the novel, that is, the simple equivalent of the scope of the patent application and the content of the new creation description. Changes and modifications are still covered by this new creation patent. In addition, any of the embodiments or the claims of the present invention are not required to achieve all of the objects or advantages or features disclosed in the novel. In addition, the abstract sections and headings are only used to assist in the search for patent documents and are not intended to limit the scope of the novel creation. 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.

110‧‧‧Light source module

112‧‧‧Lighting unit

114‧‧‧ lens

116‧‧‧ Covers

117‧‧‧ Cover

118‧‧‧Transparent cover

130‧‧‧ Backplane

A‧‧‧ area

CL_1‧‧‧First color light

CL_2‧‧‧Second shade

NU‧‧Nee unit

QD‧‧‧Quantum Point Materials

WL‧‧‧White light

Claims (14)

A light source module includes: a light emitting unit, the light emitting unit emits a first color light; a lens covering the light emitting unit; and a cover member covering the lens, the cover member being doped with a quantum dot material And the quantum dot material absorbs at least a portion of the first color light and excites a second color light, wherein a peak value of a peak of the first color light spectrum is smaller than a wavelength value of a peak of the second color light spectrum, the quantum The dot material comprises a plurality of nanocells, and the nanocells have substantially the same size. The light source module of claim 1, wherein the cover member comprises a cover layer covering the lens, wherein the cover layer is doped with the quantum dot material. The light source module of claim 2, wherein the cover layer has a shape of a cone or a sphere. The light source module of claim 2, wherein the cover layer comprises a top surface, the top surface is shaped like a polygon, and the cover layer further comprises a plurality of sides, and each side of the cover layer is connected to the polygon One side. The light source module of claim 2, wherein the cover layer comprises a top surface and a side surface connecting the top surface, the top surface is circular in shape, and the side surface is a conical surface. The light source module of claim 2, further comprising an optical diffuser covering the cover layer. The light source module of claim 2, wherein the cover member further comprises a transparent cover covering the cover layer. The light source module of claim 7, wherein the shape of the transparent cover is the same as the shape of the cover layer. The light source module of claim 1, wherein the other portion of the first color light is mixed with the second color light to form a white light. The light source module of claim 1, wherein the light emitting unit comprises a blue light emitting chip, and the quantum dot material is a quantum dot material that generates yellow light. A backlight module includes: at least one light source module, comprising: a light emitting unit, the light emitting unit emits a first color light; a lens covering the light emitting unit; and a cover member covering the lens, the cover The cover member is doped with a quantum dot material, and the quantum dot material absorbs at least a portion of the first color light and excites a second color light; and an optical adjustment member is disposed above the light source module for adjusting the light source mode The optical property of the group of light, wherein the peak of the first color spectrum is smaller than the wavelength of the peak of the second color spectrum, the quantum dot material comprises a plurality of nano-units, and the nano-units have Substantially the same size. The backlight module of claim 11, further comprising a backing plate, the light source module is disposed on the backing plate, the cover member comprises a cover layer and a cover a transparent cover covering the lens, and the transparent cover covers the cover layer, wherein the transparent cover comprises a fixing member, and the transparent cover is fixed to the back plate by the fixing member. The backlight module of claim 11, wherein the optical adjustment member comprises an optical diffusion sheet disposed above the light source module. The backlight module of claim 13, wherein the backlight module comprises a light guide plate, the light source module is disposed beside the light guide plate, and another portion of the first color light emitted by the light source module is The second color light is incident on the light guide plate.