CN113641033B - Light source module, backlight module and display module - Google Patents
Light source module, backlight module and display module Download PDFInfo
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- CN113641033B CN113641033B CN202110266960.2A CN202110266960A CN113641033B CN 113641033 B CN113641033 B CN 113641033B CN 202110266960 A CN202110266960 A CN 202110266960A CN 113641033 B CN113641033 B CN 113641033B
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- 230000003287 optical effect Effects 0.000 claims abstract description 116
- 238000002310 reflectometry Methods 0.000 claims abstract description 26
- 238000009792 diffusion process Methods 0.000 claims description 29
- 239000002096 quantum dot Substances 0.000 claims description 22
- 239000000463 material Substances 0.000 claims description 12
- 230000000694 effects Effects 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000003384 imaging method Methods 0.000 description 2
- 239000004973 liquid crystal related substance Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000000873 masking effect Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133605—Direct backlight including specially adapted reflectors
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133603—Direct backlight with LEDs
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133611—Direct backlight including means for improving the brightness uniformity
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Planar Illumination Modules (AREA)
- Liquid Crystal (AREA)
Abstract
The invention discloses a light source module, a backlight module and a display module. At least one light-emitting component is arranged on the circuit board; at least one optical lens is positioned on the circuit board, and each optical lens covers a light-emitting component; the light adjusting layer is arranged on the circuit board, and at least one optical adjusting area is formed at the position of the light adjusting layer corresponding to each light emitting component; the light adjusting layer has a first reflectivity in the at least one optical adjusting region, and the light adjusting layer has a second reflectivity outside the at least one optical adjusting region, wherein the first reflectivity is greater than the second reflectivity. The invention enlarges the light-emitting angle of the optical lens corresponding to each light-emitting component, can avoid the phenomenon of dark bands between two adjacent light-emitting components, improves the light uniformity of the backlight module and improves the display effect of the display module.
Description
Technical Field
The present invention relates to a light source module, a backlight module and a display module, and more particularly to a light source module, a backlight module and a display module for improving uniformity of light.
Background
With the continuous development of liquid crystal display technology, the requirements for a backlight module for supplying light sources to a liquid crystal display panel are also increasing. The light spot illuminance range of the light-emitting component in the traditional direct type backlight module is narrower, the light intensity distribution angle is smaller, and particularly when the light-emitting component is matched with a quantum dot membrane or a quantum dot plate for use, the excitation of light rays generated by the light-emitting component to the quantum dots is relatively limited, so that local chromatic aberration is easy to occur from the view of the picture effect, and the display effect is influenced.
Disclosure of Invention
The invention aims to provide a light source module, a backlight module and a display module, which are used for solving the problem of uneven brightness of a backlight source which can be provided by the backlight module in the prior art.
In order to achieve the above objective, the present invention provides a light source module, which includes a circuit board, at least one light emitting device, at least one optical lens, and a light adjusting layer. At least one light-emitting component is arranged on the circuit board; at least one optical lens is positioned on the circuit board, and each optical lens covers a light-emitting component; the light adjusting layer is arranged on the circuit board, and at least one optical adjusting area is formed at the position of the light adjusting layer corresponding to each light emitting component; the light adjusting layer has a first reflectivity in the at least one optical adjusting region, and the light adjusting layer has a second reflectivity outside the at least one optical adjusting region, wherein the first reflectivity is greater than the second reflectivity.
As an alternative technical scheme, a projection area of each optical lens on the circuit board is defined as a first area, and the projection of the corresponding optical adjustment area on the circuit board is smaller than the first area.
As an alternative technical scheme, each optical lens is provided with a plurality of fixing parts to be fixed on the circuit board, the projection of the arc-shaped connecting lines of the fixing parts on the circuit board is defined as a second area, and the projection of the corresponding optical adjustment area on the circuit board is positioned in the second area.
As an alternative solution, the light adjusting layer includes a first adjusting layer and a second adjusting layer, where the first adjusting layer and a part of the second adjusting layer are disposed in the optical adjusting area, or the second adjusting layer is disposed outside the optical adjusting area, and the first adjusting layer is disposed in the optical adjusting area.
As an alternative technical scheme, the first adjusting layer is a first white ink layer, and the second adjusting layer is a second white ink layer.
As an alternative solution, the projection of each optical adjustment area on the circuit board is circular.
Alternatively, the first reflectivity is greater than 90%.
In addition, the invention also provides a backlight module which comprises a bottom plate, a reflecting sheet, the light source module and a diffusion plate. The reflecting sheet is arranged on the bottom plate and is provided with at least one first hole; the light source module is positioned between the bottom plate and the reflecting sheet, and the at least one optical lens is exposed from the at least one first hole; the diffusion plate is arranged on the reflection sheet and the light source module, and quantum dot materials are arranged in the diffusion plate; and one part of light rays emitted by each light emitting component are refracted by the corresponding optical lens and emitted to a first area of the diffusion plate, and the other part of light rays emitted by each light emitting component are reflected by the corresponding optical lens to the corresponding optical adjustment area and reflected by the corresponding optical adjustment area and emitted to a second area of the diffusion plate, wherein the second area surrounds the first area.
As an alternative technical scheme, each first hole is elliptical; or each first hole is provided with a first circular arc, a second circular arc, a first connecting line and a second connecting line, wherein the first circular arc and the second circular arc are opposite, and the first connecting line is parallel to the second connecting line.
In addition, the invention also provides a display module, which comprises a display panel and the backlight module, wherein the display panel is arranged on the backlight module.
According to the light source module, the backlight module and the display module, the light adjusting layer is arranged on the circuit board, and the reflectivity of an optical adjusting area formed at the position of the light adjusting layer corresponding to each light emitting component is larger than that of other areas. One part of the light emitted by the light emitting components is refracted through the optical lens and irradiates to the first area of the diffusion plate, the other part of the light is reflected through the optical lens and irradiates to the optical adjustment area, and after being reflected by the optical adjustment area, the light is refracted again through the optical lens and irradiates to the second area of the diffusion plate, and the second area surrounds the first area, so that the light emitting angle of the optical lens corresponding to each light emitting component is enlarged, the light emitting components excite the quantum dot film/quantum dot plate more fully, the phenomenon of dark bands between two adjacent light emitting components is avoided, the light uniformity of the backlight module is improved, and the display effect of the display module is improved.
The invention will now be described in more detail with reference to the drawings and specific examples, which are not intended to limit the invention thereto.
Drawings
FIG. 1 is a cross-sectional view of a display module according to the present invention;
fig. 2 is a cross-sectional view of a backlight module according to the present invention;
FIG. 3 is an enlarged view of a portion of a backlight module according to the present invention;
FIG. 4 is a top view of a backlight module according to the present invention;
Fig. 5 is a partial top view of the backlight module of the present invention.
Detailed Description
For a further understanding of the objects, construction, features, and functions of the invention, reference should be made to the following detailed description of the preferred embodiments.
Referring to fig. 1 to 5, fig. 1 is a cross-sectional view of a display module according to the present invention; fig. 2 is a cross-sectional view of a backlight module according to the present invention; FIG. 3 is an enlarged view of a portion of a backlight module according to the present invention; FIG. 4 is a top view of a backlight module according to the present invention; fig. 5 is a partial top view of the backlight module of the present invention.
As shown in fig. 1, the display module 2000 of the present invention includes a backlight module 1000 and a display panel 2100, wherein the display panel 2100 is disposed on the backlight module 1000, and the backlight module 1000 can provide a backlight source with uniform light so that the display module 2000 has a better display effect.
As shown in fig. 2, the backlight module 1000 of the present invention includes a light source module 100, a bottom plate 200, a reflective sheet 300, and a diffusion plate 400. The light source module 100 and the reflective sheet 300 are disposed on the base plate 200, and the light source module 100 is disposed below the reflective sheet 300 so as to be located between the base plate 200 and the reflective sheet 300. The diffusion plate 400 is disposed on the light source module 100 and the reflective sheet 300, and quantum dot materials are disposed in the diffusion plate 400.
As shown in fig. 3 and 5, the light source module 100 of the present invention includes a circuit board 110, at least one light emitting device 120, at least one optical lens 130, and a light adjusting layer 140. The at least one light emitting device 120 is disposed on the circuit board 110, the at least one optical lens 130 is disposed on the circuit board 110, and each optical lens 130 covers the light emitting device 120. The light adjusting layer 140 is disposed on the circuit board 110, and the light adjusting layer 140 forms at least one optical adjusting region 141 at a position corresponding to each light emitting device 120, the light adjusting layer 140 has a first reflectivity in the at least one optical adjusting region 141, and the light adjusting layer 140 has a second reflectivity outside the at least one optical adjusting region 141, wherein the first reflectivity is greater than the second reflectivity.
As shown in fig. 3 and 5, in the backlight module 1000 of the present invention, the reflective sheet 300 further has at least one first hole 310, and at least one optical lens 130 on the light source module 100 is exposed from the at least one first hole 310. As shown in fig. 2, when the backlight module 1000 works, a part of light emitted by each light emitting component 120 is refracted by the corresponding optical lens 130 and exits to the first area d1 of the diffusion plate 400, another part of light emitted by each light emitting component 120 is reflected by the corresponding optical lens 130 to the corresponding optical adjustment area 141 and exits to the second area d2 of the diffusion plate 400 again after being reflected by the corresponding optical adjustment area 141 and refracted by the optical lens 130, and the second area d2 surrounds the first area d1, so that the light-emitting angle of the optical lens 130 is increased by the arrangement of the optical adjustment area 141 with higher reflectivity, and the backlight source of the light source module 100 is more uniform. When the light source module 100 is applied to the backlight module 1000, the light source module 100 can more fully excite the quantum dot material in the diffusion plate 400, so that the backlight module 1000 can provide a better backlight source, and the display module 2000 can have a better display effect.
At present, the requirements of people on display devices are higher and higher, especially the color requirements, and a large number of novel technologies are applied to backlight illumination. The quantum dot has unique photoelectric characteristic, and can emit very pure high-quality single color points with different colors according to the diameter of the quantum dot after being stimulated by light or electricity. According to the invention, the quantum dot material is added into the diffusion plate 400, so that the diffusion plate 400 has higher integration level, good toughness, convenient assembly, labor cost saving and high color gamut display effect of the display module 2000. In practice, the light emitting component 120 may be a blue LED, and the diffusion plate 400 may include red quantum dot material and green quantum dot material, so as to generate pure high-quality red single dot and green single dot by means of the photoelectric characteristic of the quantum dots, so as to realize better imaging color.
In order to further improve the light output quality of the backlight module 1000, the present invention provides the light adjusting layer 140 on the circuit board 110, and the light adjusting layer 140 forms the corresponding optical adjusting area 141 at the position corresponding to each light emitting device 120. The optical adjustment area 141 has a higher first reflectivity, when the light emitted by the optical component 120 is reflected by the corresponding optical lens 130 to the corresponding optical adjustment area 141, the light will reach the diffusion plate 400 again through the refraction of the optical lens 130 after being reflected by the optical adjustment area 141, and the emergent angle of the light L2 is generally larger than the emergent angle of the light L1 directly refracted by the light emitting component 120 and the optical lens 130, so that the setting of the optical adjustment area 141 with a higher reflectivity can increase the emergent angle of each optical lens 130, so that the light emitted by each light emitting component 120 reaches the diffusion plate 400 containing the quantum dot material, the light in the area between two adjacent light emitting components 120 is increased, the quantum dot material can be excited more fully, the dark band phenomenon between the two adjacent light emitting components 120 is avoided, the light of the backlight module 1000 is better and uniform, and the display device 2000 using the backlight module 1000 can also have better imaging color. Typically, the first reflectivity is greater than 90%. In practice, the diffusion plate 400 may also be a quantum dot film containing a quantum dot material.
In the present embodiment, the light adjusting layer 140 except for each of the optical adjusting regions 141 has a lower second reflectivity (e.g. less than 60%), and when a portion of the light emitted from the optical element 120 is reflected by the corresponding optical lens 130 and is incident on the light adjusting layer 140 except for each of the optical adjusting regions 141, the portion of the light is absorbed or reflected slightly to avoid affecting other light.
As shown in fig. 5, the projection area of each optical lens 130 on the circuit board 110 is defined as a first area, and the corresponding optical adjustment area 141 is smaller than the first area, that is, the projection of the optical adjustment area 141 corresponding to each optical lens 130 on the circuit board 110 is located in the projection range of each optical lens 130 on the circuit board 110.
As shown in fig. 3, each optical lens 130 has a plurality of fixing members 131 to be fixed on the circuit board 110, and as shown in fig. 5, a projection of an arc-shaped connecting line defining the plurality of fixing members 131 on the circuit board 110 is a second area, and the corresponding optical adjustment area 141 is located in the second area. That is, the projection of the optical adjustment area 141 corresponding to each optical lens 130 on the circuit board 110 is located in the projection range of the arc-shaped connection line of the fixing member 131 of each optical lens 130 on the circuit board 110. In an embodiment, the projection of the optical adjustment area 141 corresponding to each optical lens 130 on the circuit board 110 may coincide with the projection of the arc-shaped connection line of the fixing member 131 of each optical lens 130 on the circuit board 110.
As shown in fig. 3 and 5, the optical adjustment layer 140 includes a first adjustment layer 151 and a second adjustment layer 152, in this embodiment, the second adjustment layer 152 is located outside each optical adjustment region 141, and the first adjustment layer 151 is located inside each optical adjustment region 141. In the present embodiment, the projection of the first adjustment layer 151 on the circuit board 110 is overlapped with the projection of each optical adjustment region 141 on the circuit board 110, i.e. the first adjustment layer 151 forms each optical adjustment region 141. In another embodiment, the projection of the first adjustment layer 151 on the circuit board 110 is slightly larger than the projection of each optical adjustment region 141 on the circuit board 110, so that the first adjustment layer 151 and a portion of the second adjustment layer 152 are disposed inside the optical adjustment region 141.
In this embodiment, the first adjustment layer 151 is a first white ink layer, and the second adjustment layer 152 is a second white ink layer. That is, the first adjustment layer 151 and the second adjustment layer 152 are both white ink layers, but the materials of the two layers are different, so that the reflectivity of the second white ink layer forming the second adjustment layer 152 is smaller than that of the first white ink layer forming the first adjustment layer 151.
In an embodiment, when manufacturing the light source module 100, each of the optical adjustment areas 141 is first covered to print the second white ink on other areas on the circuit board 110 to form a second white ink layer (i.e. the second adjustment layer 152), and the second white ink layer is covered after baking to dry, so as to print the first white ink on each of the optical adjustment areas 141 to form a first white ink layer (i.e. the first adjustment layer 151) and baking to dry. When the manufacturing method is applied, the first adjusting layer 151 and the second adjusting layer 152 are spliced and are not overlapped.
In another embodiment, the second white ink layer (i.e. the second adjustment layer 152) may be formed by coating the second white ink on the circuit board 110, baking to dryness, and then masking the second white ink layer except for each of the optical adjustment regions 141 to print the first white ink on each of the optical adjustment regions 141 to form the first white ink layer (i.e. the first adjustment layer 151), and baking to dryness. When the manufacturing method is applied, the first adjustment layer 151 is stacked on the second adjustment layer 152. The user can make according to the actual needs, but not limited to this.
As shown in fig. 4 and 5, in the present embodiment, the projection of each optical adjustment area 141 on the circuit board 110 is circular. The corresponding light emitting component 120 is located at the center of the corresponding optical adjustment area 141, so that when the light source module 100 works, the light emitting angles of the corresponding light emitting component 120 in a plurality of symmetrical directions are increased by each optical adjustment area 141, for example, the light emitting angles of the light emitting components 120 in the first direction F1 and the second direction F2 shown in fig. 5 are increased, so that the light between two adjacent light emitting components 120 in the first direction F1 is increased, and the light between two adjacent light emitting components 120 in the second direction F1 is increased, thereby further improving the light uniformity of the light source module 100 and the backlight module 1000.
As shown in fig. 5, each first hole 310 of the reflective sheet 300 has a first arc 311, a second arc 312, and a first connecting line 321 and a second connecting line 322 connecting the first arc 311 and the second arc 312, wherein the first connecting line 322 is parallel to the second connecting line. In another embodiment, each of the first holes 310 of the reflective sheet 300 has an elliptical shape.
According to the light source module, the backlight module and the display module, the light adjusting layer is arranged on the circuit board, and the reflectivity of an optical adjusting area formed at the position of the light adjusting layer corresponding to each light emitting component is larger than that of other areas. One part of the light emitted by the light emitting components is refracted through the optical lens and irradiates to the first area of the diffusion plate, the other part of the light is reflected through the optical lens and irradiates to the optical adjustment area, and after being reflected by the optical adjustment area, the light is refracted again through the optical lens and irradiates to the second area of the diffusion plate, and the second area surrounds the first area, so that the light emitting angle of the optical lens corresponding to each light emitting component is enlarged, the light emitting components excite the quantum dot film/quantum dot plate more fully, the phenomenon of dark bands between two adjacent light emitting components can be avoided, the light uniformity of the backlight module is improved, and the display effect of the display module is improved.
Of course, the present invention is capable of other various embodiments and its several details are capable of modification and variation in light of the present invention by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (9)
1. A light source module is applied to a backlight module and is characterized by comprising:
A circuit board;
at least one light-emitting component arranged on the circuit board;
at least one optical lens, which is positioned on the circuit board and each optical lens covers a light-emitting component; and
The light adjusting layer is arranged on the circuit board, and at least one optical adjusting area is formed at the position of the light adjusting layer corresponding to each light emitting component; the light adjusting layer has a first reflectivity in the at least one optical adjusting region, and the light adjusting layer has a second reflectivity outside the at least one optical adjusting region, wherein the first reflectivity is larger than the second reflectivity;
Defining a projection area of each optical lens on the circuit board as a first area a1, wherein the projection of the corresponding optical adjustment area on the circuit board is smaller than the first area a1;
The backlight module comprises a diffusion plate, wherein quantum dot materials are arranged in the diffusion plate;
And one part of light rays emitted by each light emitting component are refracted by the corresponding optical lens and emitted to the first area d1 of the diffusion plate, and the other part of light rays emitted by each light emitting component are reflected by the corresponding optical lens to the corresponding optical adjustment area and reflected by the corresponding optical adjustment area and emitted to the second area d2 of the diffusion plate, wherein the second area d2 surrounds the first area d1.
2. The light source module of claim 1, wherein: each optical lens is provided with a plurality of fixing parts which are fixed on the circuit board, the projection of the arc-shaped connecting lines of the fixing parts on the circuit board is defined as a second area a2, and the projection of the corresponding optical adjustment area on the circuit board is positioned in the second area a 2.
3. The light source module of claim 1, wherein: the light adjusting layer comprises a first adjusting layer and a second adjusting layer, wherein the first adjusting layer and part of the second adjusting layer are mutually contained in the optical adjusting area, or the second adjusting layer is positioned outside the optical adjusting area, and the first adjusting layer is positioned in the optical adjusting area.
4. A light source module as recited in claim 3, wherein: the first adjusting layer is a first white ink layer, and the second adjusting layer is a second white ink layer.
5. The light source module of claim 1, wherein: the projection of each optical adjustment area on the circuit board is circular.
6. The light source module of claim 1, wherein: the first reflectivity is greater than 90%.
7. The utility model provides a backlight unit which characterized in that includes:
A bottom plate;
the reflecting sheet is arranged on the bottom plate and is provided with at least one first hole;
the light source module according to any one of claims 1 to 6; the light source module is positioned between the bottom plate and the reflecting sheet, and the at least one optical lens is exposed from the at least one first hole; and
The diffusion plate is arranged on the reflection sheet and the light source module, and quantum dot materials are arranged in the diffusion plate;
And one part of light rays emitted by each light emitting component are refracted by the corresponding optical lens and emitted to the first area d1 of the diffusion plate, and the other part of light rays emitted by each light emitting component are reflected by the corresponding optical lens to the corresponding optical adjustment area and reflected by the corresponding optical adjustment area and emitted to the second area d2 of the diffusion plate, wherein the second area d2 surrounds the first area d1.
8. A backlight module according to claim 7, wherein: each first hole is elliptical; or each first hole is provided with a first circular arc, a second circular arc, a first connecting line and a second connecting line, wherein the first circular arc and the second circular arc are opposite, and the first connecting line is parallel to the second connecting line.
9. The utility model provides a display module assembly which characterized in that includes:
the backlight module of claim 7; and
The display panel is arranged on the backlight module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110266960.2A CN113641033B (en) | 2021-03-11 | 2021-03-11 | Light source module, backlight module and display module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110266960.2A CN113641033B (en) | 2021-03-11 | 2021-03-11 | Light source module, backlight module and display module |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113641033A CN113641033A (en) | 2021-11-12 |
| CN113641033B true CN113641033B (en) | 2024-05-28 |
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| CN202110266960.2A Active CN113641033B (en) | 2021-03-11 | 2021-03-11 | Light source module, backlight module and display module |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010217349A (en) * | 2009-03-13 | 2010-09-30 | Hitachi Displays Ltd | Liquid crystal display |
| WO2012155365A1 (en) * | 2011-05-16 | 2012-11-22 | 深圳市华星光电技术有限公司 | Backlight module and display device |
| CN203151858U (en) * | 2013-03-25 | 2013-08-21 | 乐健科技（珠海）有限公司 | A metal matrix printed circuit board containing a ceramic reflection layer and a LED light emitting module |
| CN203404682U (en) * | 2013-08-27 | 2014-01-22 | 深圳Tcl新技术有限公司 | Backlight module and liquid crystal display device |
| KR20180119539A (en) * | 2018-10-15 | 2018-11-02 | 주식회사 소룩스 | lighting apparatus using Quantum Dot integrated type diffusion plate |
| CN209356814U (en) * | 2019-03-25 | 2019-09-06 | 深圳创维－Rgb电子有限公司 | Down straight aphototropism mode set, liquid crystal module and display device |
| CN211577619U (en) * | 2020-01-21 | 2020-09-25 | 海信视像科技股份有限公司 | Display device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102203950B1 (en) * | 2014-02-05 | 2021-01-19 | 삼성디스플레이 주식회사 | Light source module, backlight assembly including the same, and display device including the light source module |
| US10578278B2 (en) * | 2017-06-05 | 2020-03-03 | Lumileds Holding B.V. | Optical lens for extremely thin direct-lit backlight |
-
2021
- 2021-03-11 CN CN202110266960.2A patent/CN113641033B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010217349A (en) * | 2009-03-13 | 2010-09-30 | Hitachi Displays Ltd | Liquid crystal display |
| WO2012155365A1 (en) * | 2011-05-16 | 2012-11-22 | 深圳市华星光电技术有限公司 | Backlight module and display device |
| CN203151858U (en) * | 2013-03-25 | 2013-08-21 | 乐健科技（珠海）有限公司 | A metal matrix printed circuit board containing a ceramic reflection layer and a LED light emitting module |
| CN203404682U (en) * | 2013-08-27 | 2014-01-22 | 深圳Tcl新技术有限公司 | Backlight module and liquid crystal display device |
| KR20180119539A (en) * | 2018-10-15 | 2018-11-02 | 주식회사 소룩스 | lighting apparatus using Quantum Dot integrated type diffusion plate |
| CN209356814U (en) * | 2019-03-25 | 2019-09-06 | 深圳创维－Rgb电子有限公司 | Down straight aphototropism mode set, liquid crystal module and display device |
| CN211577619U (en) * | 2020-01-21 | 2020-09-25 | 海信视像科技股份有限公司 | Display device |
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