WO2024159697A1 - 一种背光模组和显示面板 - Google Patents

一种背光模组和显示面板 Download PDF

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Publication number
WO2024159697A1
WO2024159697A1 PCT/CN2023/104024 CN2023104024W WO2024159697A1 WO 2024159697 A1 WO2024159697 A1 WO 2024159697A1 CN 2023104024 W CN2023104024 W CN 2023104024W WO 2024159697 A1 WO2024159697 A1 WO 2024159697A1
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Prior art keywords
light
microstructure
microstructure lens
lens
optical film
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PCT/CN2023/104024
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English (en)
French (fr)
Inventor
章泽
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Wuhan China Star Optoelectronics Technology Co Ltd
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Wuhan China Star Optoelectronics Technology Co Ltd
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Publication of WO2024159697A1 publication Critical patent/WO2024159697A1/zh
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Classifications

    • 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
    • G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
    • G02F1/133607—Direct backlight including a specially adapted diffusing, scattering or light controlling members the light controlling member including light directing or refracting elements, e.g. prisms or lenses

Definitions

  • the present application relates to the field of electronics, and in particular to a backlight module and a display panel.
  • MiniLED technology has great potential to become one of the development directions of the next generation of display technology.
  • Mini-LED technology With the introduction of Mini-LED technology in mid-to-high-end tablets and notebook products, the dark display effect of LTPS-LCD products has been greatly improved. Compared with OLED, Mini-LED still needs to be improved in thickness and response time. But it has obvious advantages in power consumption/HDR standard/CR/brightness/product reliability.
  • the picture quality under the backlight and module states is poor, and it is more likely to have uneven picture display, light shadows and other bad qualities.
  • a dichroic film is needed.
  • the embodiments of the present application provide a backlight module and a display panel to alleviate the technical problem that rainbow patterns are easily formed between the dichroic films due to their special array microstructure.
  • the embodiment of the present application provides a backlight module, the backlight module comprising:
  • a first light-splitting optical film is arranged on one side of the light-emitting unit, and a plurality of first microstructure lenses are arranged on a side of the first light-splitting optical film away from the light-emitting unit;
  • a second light-splitting optical film is arranged on a side of the first light-splitting optical film away from the light-emitting unit, and a plurality of second microstructure lenses are arranged on a side of the second light-splitting optical film away from the first light-splitting optical film;
  • a third light-splitting optical film is arranged on a side of the second light-splitting optical film away from the first light-splitting optical film, and a plurality of third microstructure lenses are arranged on the side of the third light-splitting optical film away from the first light-splitting optical film;
  • the structure of the first microstructure lens and the structure of the third microstructure lens are different from the structure of the second microstructure lens, and the shape of the first microstructure lens is the same as the shape of the third microstructure lens.
  • a surface of the first light-splitting optical film close to the light-emitting unit, a surface of the second light-splitting optical film close to the light-emitting unit, and a surface of the third light-splitting optical film close to the light-emitting unit are all matte surfaces.
  • the shape of the first microstructure lens, the shape of the second microstructure lens and the shape of the third microstructure lens are the same; the size of the second microstructure lens is different from the size of the first microstructure lens and the size of the third microstructure lens.
  • a cross section of the first microstructure lens, a cross section of the second microstructure lens, and a cross section of the third microstructure lens are all triangles;
  • the width of the first microstructure lens and the width of the third microstructure lens are both different from the width of the second microstructure lens
  • the height of the first microstructure lens and the height of the third microstructure lens are both different from the height of the second microstructure lens; and/or
  • the vertex angle of the first microstructure lens and the vertex angle of the third microstructure lens are both different from the vertex angle of the second microstructure lens.
  • a difference between a width of the second microstructure lens and a width of the first microstructure lens is greater than or equal to a first preset value
  • a difference between a height of the second microstructure lens and a height of the first microstructure lens is greater than or equal to a second preset value.
  • a difference between a width of the third microstructure lens and a width of the first microstructure lens is greater than or equal to a third preset value, and the third preset value is less than the first preset value;
  • a difference between a height of the third microstructure lens and a height of the first microstructure lens is greater than or equal to a fourth preset value, and the fourth preset value is less than the second preset value.
  • the width of the second microstructure lens is greater than the width of the first microstructure lens
  • the height of the second microstructure lens is greater than the height of the first microstructure lens.
  • the width of the second microstructure lens is smaller than the width of the first microstructure lens
  • the height of the second microstructure lens is smaller than the height of the first microstructure lens.
  • a density of the plurality of first microstructured lenses on the first beam-splitting optical film is different from a density of the plurality of second microstructured lenses on the second beam-splitting optical film.
  • An embodiment of the present application further provides a display panel, comprising a backlight module as described in any one of the above items.
  • the embodiment of the present application provides a backlight module, which includes a light-emitting unit, a first light-splitting optical film, a second light-splitting optical film and a third light-splitting optical film.
  • the first light-splitting optical film is arranged on one side of the light-emitting unit, and a plurality of first microstructure lenses are arranged on the side of the first light-splitting optical film away from the light-emitting unit;
  • the second light-splitting optical film is arranged on the side of the first light-splitting optical film away from the light-emitting unit, and a plurality of second microstructure lenses are arranged on the side of the second light-splitting optical film away from the first light-splitting optical film;
  • the third light-splitting optical film is arranged on the side of the second light-splitting optical film away from the first light-splitting optical film, and a plurality of third microstructure lenses are arranged on the side of the third light-
  • a second light-splitting optical film is disposed between the first light-splitting optical film and the third light-splitting optical film, and the structure of the microstructure lens of the second light-splitting optical film is different from the structure of the microstructure lens on the first light-splitting optical film and the third light-splitting optical film, thereby making the rainbow pattern phenomenon generated between the first light-splitting optical film and the third light-splitting optical film disappear.
  • the second light-splitting optical film can also increase the light splitting effect.
  • FIG. 1 is a schematic diagram of a first structure of a backlight module provided in an embodiment of the present application.
  • FIG. 2 is a schematic diagram showing the dimensions of a second light-splitting optical film in the backlight module shown in FIG. 1 .
  • FIG. 3 is a schematic diagram of a first structure of the first light-splitting optical film, the second light-splitting optical film and the third light-splitting optical film in the backlight module shown in FIG. 1 .
  • FIG. 4 is a schematic diagram of a second structure of the first light-splitting optical film, the second light-splitting optical film and the third light-splitting optical film in the backlight module shown in FIG. 1 .
  • FIG. 5 is a schematic diagram of a third structure of the first light-splitting optical film, the second light-splitting optical film and the third light-splitting optical film in the backlight module shown in FIG. 1 .
  • Figure 1 is a schematic diagram of the first structure of the backlight module provided in the embodiment of the present application
  • Figure 2 is a schematic diagram of the size of the second light-splitting optical film in the backlight module shown in Figure 1.
  • the embodiment of the present application provides a backlight module 100, which includes a light-emitting unit 10, a first light-splitting optical film 20, a second light-splitting optical film 30, and a third light-splitting optical film 40.
  • the first beam-splitting optical film 20 is arranged on one side of the light-emitting unit 10, and a plurality of first microstructure lenses 210 are arranged on the side of the first beam-splitting optical film 20 away from the light-emitting unit 10;
  • the second beam-splitting optical film 30 is arranged on the side of the first beam-splitting optical film 20 away from the light-emitting unit 10, and a plurality of second microstructure lenses 310 are arranged on the side of the second beam-splitting optical film 30 away from the first beam-splitting optical film 20;
  • the third beam-splitting optical film 40 is arranged on the side of the second beam-splitting optical film 30 away from the first beam-splitting optical film 20, and a plurality of third microstructure lenses 410 are arranged on the side of the third beam-splitting optical film 40 away from the first beam-splitting optical film 20; wherein the structure of the first microstructure lens 210 and the structure of the third microstructure lens 410 are different
  • the second light-splitting optical film 30 is disposed between the first light-splitting optical film 20 and the third light-splitting optical film 40, and the structure of the microstructure lens of the second light-splitting optical film 30 is different from the structure of the microstructure lens on the first light-splitting optical film 20 and the third light-splitting optical film 40, thereby eliminating the rainbow pattern phenomenon generated between the first light-splitting optical film 20 and the third light-splitting optical film 40.
  • the second light-splitting optical film 30 can also increase the light splitting effect.
  • optical film may be understood as a polymer film.
  • a “spectrometric optical film” may be a polymer film including a plurality of spectroscopic microlenses or microstructures on at least one surface.
  • a “microstructure lens” is a microstructure that, when a collimated light beam is directed to the microstructure lens on an axis, splits the collimated light beam into two or more light beams with a region of lower relative intensity on the axis.
  • the microstructure lens can be in the form of a prism and divide the incident light beam into two beams, and the angle between the two beams depends on the prism angle and the refractive index of the prism material.
  • the microstructure lens can be in the form of a quadrangular pyramid and divide the incident coaxial light beam into four beams.
  • the microstructure lens can be in the form of a cone and divide the incident coaxial light beam into conical rings.
  • the specific form of the microstructure lens can be set according to actual conditions and is not specifically limited here.
  • first light-splitting optical film 20 the second light-splitting optical film 30 , and the third light-splitting optical film 40 , which are close to the light-emitting unit 10 , are all matte or have no array structure.
  • the shape of the first microstructure lens 210 and the shape of the third microstructure lens 410 are the same, which can be understood as the first microstructure lens 210 and the third microstructure lens 410 are of the same shape or the same model, that is, the number of edges is the same, and the difference between the size of the first microstructure lens 210 and the size of the third microstructure lens 410 is within a preset range.
  • the structure of the first microstructure lens 210 and the structure of the third microstructure lens 410 can both be inverted quadrangular pyramids or inverted triangular pyramids, and the difference between the size of the first microstructure lens 210 and the size of the third microstructure lens 410 is less than a preset value.
  • FIG. 2 Please refer to FIG. 2 , and take FIG. 2 as an example to illustrate the size of the first microstructure lens 210, wherein the height b of the first microstructure lens 210 is the maximum length of the first microstructure lens in a direction perpendicular to the light-emitting unit 10.
  • the width a of the first microstructure lens 210 is the width of the projection of the first microstructure lens on the light-emitting unit 10.
  • the vertex angle c of the first microstructure lens 210 is the angle between the two outermost edges as shown in the cross-sectional view.
  • the definitions of the height, width, and vertex angle in the following embodiments are shown in FIG. 2 , and are not repeated below.
  • the difference between the width of the third microstructure lens 410 and the width of the first microstructure lens 210 is greater than or equal to the third preset value.
  • the third preset value may be 5 um
  • the width of the third microstructure lens 410 is 100 um
  • the width of the first microstructure lens 210 is 105 um
  • the difference between the width of the first microstructure lens 210 and the width of the third microstructure lens 410 is equal to the third preset value.
  • the specific value of the third preset value, the width of the first microstructure lens 210, and the width of the third microstructure lens 410 may be set according to actual conditions, and are not specifically limited here.
  • the difference between the height of the third microstructure lens 410 and the height of the first microstructure lens 210 is greater than or equal to a fourth preset value.
  • the fourth preset value may be 5um
  • the height of the third microstructure lens 410 is 50um
  • the height of the first microstructure lens 210 is 45um
  • the difference between the height of the first microstructure lens 210 and the height of the third microstructure lens 410 is equal to the fourth preset value.
  • the specific value of the fourth preset value, the height of the first microstructure lens 210, and the height of the third microstructure lens 410 can be set according to actual conditions, and no specific limitation is made here.
  • the difference between the width of the third microstructure lens 410 and the width of the first microstructure lens 210 is greater than or equal to the third preset value, and the difference between the height of the third microstructure lens 410 and the height of the first microstructure lens 210 is greater than or equal to the fourth preset value.
  • the third preset value and the fourth preset value may be the same or different, and may be set according to actual conditions, and are not specifically limited here.
  • the size of the first microstructured lens 210 is the same as the size of the third microstructured lens 410 .
  • the shape of the first microstructure lens 210 is set to be the same as the shape of the third microstructure lens 410, and the difference between the size of the first microstructure lens 210 and the size of the third microstructure lens 410 is within a preset range, so that the original light beam from the light-emitting unit 10 is divided into multiple light beams and further propagated, thereby enhancing the light splitting effect.
  • the first light splitting optical film 20 and the third light splitting optical film 40 are superimposed together, interference will occur in the direction of the pyramid after the light source passes through, causing rainbow stripes or oblique stripes.
  • the second light splitting optical film 30 is added between the first light splitting optical film 20 and the third light splitting optical film 40, and the structure of the first microstructure lens 210 and the structure of the third microstructure lens 410 are different from the structure of the second microstructure lens 310 to offset the rainbow stripe phenomenon, and further improve the light splitting effect.
  • the structures of the first microstructure lens 210 and the third microstructure lens 410 are different from the structures of the second microstructure lens 310.
  • the shapes of the first microstructure lens 210, the second microstructure lens 310 and the third microstructure lens 410 may be the same, but the size of the second microstructure lens 310 is different from the size of the first microstructure lens 210 and the size of the third microstructure lens 410.
  • the shape of the second microstructure lens 310 is different from the shape of the first microstructure lens 210 and the shape of the third microstructure lens 410.
  • the shape of the second microstructure lens 310 is different from the shape of the first microstructure lens 210 and the shape of the third microstructure lens 410, and the size of the second microstructure lens 310 is different from the size of the first microstructure lens 210 and the size of the third microstructure lens 410.
  • the shape of the second microstructure lens 310 is different from the shape of the first microstructure lens 210 and the shape of the third microstructure lens 410. It can be understood that the shape of the second microstructure lens 310 is an inverted quadrangular pyramid, and the shape of the first microstructure lens 210 and the shape of the third microstructure lens 410 are both inverted triangular pyramids. It can also be understood that the shape of the second microstructure lens 310 is an inverted triangular pyramid, and the shape of the first microstructure lens 210 and the shape of the third microstructure lens 410 are both inverted quadrangular pyramids.
  • the shape of the first microstructure lens 210, the shape of the second microstructure lens 310, and the shape of the third microstructure lens 410 are both inverted quadrangular pyramids or inverted triangular pyramids.
  • the cross-sections of the first microstructure lens 210, the cross-sections of the second microstructure lens 310, and the cross-sections of the third microstructure lens 410 are all triangles.
  • the embodiments of the present application are described by taking the structures of the first microstructure lens 210, the second microstructure lens 310 and the third microstructure lens 410 as an inverted quadrangular pyramid or an inverted triangular pyramid as an example, which should not be understood as a limitation thereto.
  • the specific structure of the microstructure lens can be set according to actual conditions and is not specifically limited here.
  • the shape of the first microstructure lens 210, the shape of the second microstructure lens 310 and the shape of the third microstructure lens 410 are the same, but the size of the second microstructure lens 310 is different from the size of the first microstructure lens 210 and the size of the third microstructure lens 410, which can be understood as the following situation.
  • the first microstructure lens 210, the second microstructure lens 310 and the third microstructure lens 410 are all inverted quadrangular pyramids or inverted triangular pyramids, and the width of the first microstructure lens 210 and the width of the third microstructure lens 410 are different from the width of the second microstructure lens 310.
  • the first microstructure lens 210, the second microstructure lens 310 and the third microstructure lens 410 are all inverted quadrangular pyramids or inverted triangular pyramids, and the height of the first microstructure lens 210 and the height of the third microstructure lens 410 are different from the height of the second microstructure lens 310.
  • the first microstructure lens 210, the second microstructure lens 310 and the third microstructure lens 410 are all inverted quadrangular pyramids or inverted triangular pyramids, and the vertex angle of the first microstructure lens 210 and the vertex angle of the third microstructure lens 410 are different from the vertex angle of the second microstructure lens 310.
  • any two of the height, width and vertex angle of the first microstructure lens 210 and the height, width and vertex angle of the second microstructure lens 310 may be different, or the height, width and vertex angle of the first microstructure lens 210 and the height, width and vertex angle of the second microstructure lens 310 may be different.
  • the specific setting can be made according to the actual situation, and no specific limitation is made here.
  • the rainbow pattern phenomenon can be offset by setting the size of the second microstructure lens 310 to be different from the size of the first microstructure lens 210 and the size of the third microstructure lens 410.
  • the difference between the width of the second microstructure lens 310 and the width of the first microstructure lens 210 is greater than or equal to the first preset value.
  • the first preset value may be 10 um
  • the width of the second microstructure lens 310 is 110 um
  • the width of the first microstructure lens 210 is 100 um
  • the difference between the width of the first microstructure lens 210 and the width of the second microstructure lens 310 is equal to the first preset value.
  • the specific value of the third preset value, the width of the first microstructure lens 210, and the width of the third microstructure lens 410 can be set according to actual conditions, and no specific limitation is made here.
  • the difference between the height of the second microstructure lens 310 and the height of the first microstructure lens 210 is greater than or equal to the second preset value.
  • the second preset value may be 10 um
  • the height of the second microstructure lens 310 is 55 um
  • the height of the first microstructure lens 210 is 45 um
  • the difference between the height of the first microstructure lens 210 and the height of the second microstructure lens 310 is equal to the second preset value.
  • the specific value of the third preset value, the height of the first microstructure lens 210, and the height of the second microstructure lens 310 can be set according to actual conditions, and no specific limitation is made here.
  • the difference between the width of the second microstructure lens 310 and the width of the first microstructure lens 210 is greater than or equal to a first preset value, and the difference between the height of the second microstructure lens 310 and the height of the first microstructure lens 210 is greater than or equal to a second preset value.
  • the third preset value is smaller than the first preset value
  • the fourth preset value is smaller than the second preset value.
  • the difference between the size of the second microstructure lens 310 and the size of the first microstructure lens 210 may be that the size of the second microstructure lens 310 may be larger than the size of the first microstructure lens 210 , or may be smaller than the size of the first microstructure lens 210 .
  • FIG. 3 is a schematic diagram of a first structure of the first light-splitting optical film, the second light-splitting optical film, and the third light-splitting optical film in the backlight module shown in FIG. 1.
  • the width of the second microstructure lens 310 is greater than the width of the first microstructure lens 210.
  • the height of the second microstructure lens 310 is greater than the height of the first microstructure lens 210.
  • the width of the second microstructure lens 310 is greater than the width of the first microstructure lens 210, and the height of the second microstructure lens 310 is greater than the height of the first microstructure lens 210.
  • the width of the second microstructure lens 310 is smaller than the width of the first microstructure lens 210. In some embodiments, the height of the second microstructure lens 310 is smaller than the height of the first microstructure lens 210. In some embodiments, the width of the second microstructure lens 310 is smaller than the width of the first microstructure lens 210, and the height of the second microstructure lens 310 is smaller than the height of the first microstructure lens 210.
  • FIG. 4 is a second structural schematic diagram of the first beam-splitting optical film, the second beam-splitting optical film, and the third beam-splitting optical film in the backlight module shown in FIG. 1.
  • the density of the plurality of first microstructure lenses 210 on the first beam-splitting optical film 20 is different from the density of the plurality of second microstructure lenses 310 on the second beam-splitting optical film 30.
  • the density difference may be that the density of the plurality of first microstructure lenses 210 on the first beam-splitting optical film 20 is greater than the density of the plurality of second microstructure lenses 310 on the second beam-splitting optical film 30, or the density of the plurality of first microstructure lenses 210 on the first beam-splitting optical film 20 is less than the density of the plurality of second microstructure lenses 310 on the second beam-splitting optical film 30, and no specific limitation is made here.
  • FIG5 is a third structural schematic diagram of the first light-splitting optical film, the second light-splitting optical film, and the third light-splitting optical film in the backlight module shown in FIG1.
  • the spacing between two adjacent third microstructure lenses 410 is a first spacing d1
  • the spacing between two adjacent first microstructure lenses 210 is a second spacing d2
  • the first spacing d1 and the second spacing d2 are different.
  • the first spacing d1 and the second spacing d2 being different can be that the first spacing d1 is greater than the second spacing d2, or that the first spacing d1 is less than the second spacing d2, and no specific limitation is made here.
  • the embodiment of the present application further provides a display panel, comprising the backlight module 100 described in any one of the above items.
  • the backlight module 100 and the display panel provided in the embodiments of the present application are introduced in detail above. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea. At the same time, for technical personnel in this field, according to the idea of the present application, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

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Abstract

一种背光模组（100）和显示面板。背光模组（100）包括层叠设置的第一分光光学膜（20）、第二分光光学膜（30）以及第三分光光学膜（40），通过在第一分光光学膜（20）和第三分光光学膜（40）之间设置第二分光光学膜（30），第二分光光学膜（30）的微结构透镜（310）的结构与第一分光光学膜（20）和第三分光光学膜（40）上的微结构透镜（210，410）的结构不同，以缓解现有分光膜导致的彩虹纹问题。

Description

一种背光模组和显示面板 技术领域
本申请涉及电子领域，特别涉及一种背光模组和显示面板。
 背景技术
MiniLED技术具有极大潜力成为下一代显示技术发展方向之一，随着中高端平板和笔电产品上在Mini-LED技术的推出，极大提升了LTPS-LCD产品的暗态显示效果，Mini-LED相较于OLED，尽管在厚度和响应时间上还有待提高。但在功耗/ HDR标准/CR/亮度/产品信赖性上，都有明显优势。
由于灯板间LED灯的均匀分布，导致背光及模组状态下的画面品味较差，比较容易出现画面显示不均、灯影等不良品味，为提升画面品味需要用到分光膜。
然而，分光膜由于其特殊的阵列微结构导致分光膜之间易形成彩虹纹。
 发明概述
本申请实施例提供一种背光模组和显示面板，以缓解分光膜由于其特殊的阵列微结构导致分光膜之间易形成彩虹纹的技术问题。
为解决上述问题，本申请提供的技术方案如下：
本申请实施例提供一种背光模组，所述背光模组包括：
发光单元；
第一分光光学膜，设置在所述发光单元的一侧，所述第一分光光学膜远离所述发光单元的一侧设置有多个第一微结构透镜；
第二分光光学膜，设置在所述第一分光光学膜远离所述发光单元的一侧，所述第二分光光学膜远离所述第一分光光学膜的一侧设置有多个第二微结构透镜；
第三分光光学膜，设置在所述第二分光光学膜远离所述第一分光光学膜的一侧，所述第三分光光学膜远离所述第一分光光学膜的一侧设置有多个第三微结构透镜；
其中，所述第一微结构透镜的结构和所述第三微结构透镜的结构均与所述第二微结构透镜的结构不同，且所述第一微结构透镜的形状和第三微结构透镜的形状相同。
可选的，所述第一分光光学膜靠近所述发光单元的一面、所述第二分光光学膜靠近所述发光单元的一面和所述第三分光光学膜靠近所述发光单元的一面均为雾面。
可选的，所述第一微结构透镜的形状、所述第二微结构透镜的形状和所述第三微结构透镜的形状相同；所述第二微结构透镜的尺寸和所述第一微结构透镜的尺寸以及所述第三微结构透镜的尺寸不同。
可选的，在所述第一分光光学膜至所述发光单元的第一方向上，所述第一微结构透镜的横截面、所述第二微结构透镜的横截面和第三微结构透镜的横截面均为三角形；
其中，所述第一微结构透镜的宽度和所述第三微结构透镜的宽度均与所述第二微结构透镜的宽度不同；
所述第一微结构透镜的高度和所述第三微结构透镜的高度均与所述第二微结构透镜的高度不同；和/或
所述第一微结构透镜的顶角角度和所述第三微结构透镜的顶角角度均与所述第二微结构透镜的顶角角度不同。
可选的，所述第二微结构透镜的宽度与所述第一微结构透镜的宽度的差值大于或等于第一预设值；和/或
所述第二微结构透镜的高度与所述第一微结构透镜的高度的差值大于或等于第二预设值。
可选的，所述第三微结构透镜的宽度与所述第一微结构透镜的宽度的差值大于或等于第三预设值，所述第三预设值小于所述第一预设值；和/或
所述第三微结构透镜的高度与所述第一微结构透镜的高度的差值大于或等于第四预设值，所述第四预设值小于所述第二预设值。
可选的，所述第二微结构透镜的宽度大于所述第一微结构透镜的宽度；和/或
所述第二微结构透镜的高度大于所述第一微结构透镜的高度。
可选的，所述第二微结构透镜的宽度小于所述第一微结构透镜的宽度；和/或
所述第二微结构透镜的高度小于所述第一微结构透镜的高度。
可选的，所述多个第一微结构透镜在所述第一分光光学膜上的密度和所述多个第二微结构透镜在所述第二分光光学膜上的密度不相同。
可选的，相邻两个所述第三微结构透镜之间的间距为第一间距，相邻两个所述第一微结构透镜之间的间距为第二间距，所述第一间距和所述第二间距不同。
本申请实施例还提供一种显示面板，包括如上述任一项所述的背光模组。
有益效果
本申请实施例提供一种背光模组，该背光模组包括发光单元、第一分光光学膜、第二分光光学膜和第三分光光学膜。其中，第一分光光学膜设置在发光单元的一侧，第一分光光学膜远离发光单元的一侧设置有多个第一微结构透镜；第二分光光学膜设置在第一分光光学膜远离发光单元的一侧，第二分光光学膜远离第一分光光学膜的一侧设置有多个第二微结构透镜；第三分光光学膜设置在第二分光光学膜远离第一分光光学膜的一侧，第三分光光学膜远离第一分光光学膜的一侧设置有多个第三微结构透镜；其中，第一微结构透镜的结构和第三微结构透镜的结构均与第二微结构透镜的结构不同，且第一微结构透镜的形状和第三微结构透镜的形状相同。本申请实施例通过在第一分光光学膜和第三分光光学膜之间设置第二分光光学膜，且第二分光光学膜的微结构透镜的结构与第一分光光学膜和第三分光光学膜上的微结构透镜的结构不同，进而可以使第一分光光学膜和第三分光光学膜之间产生的彩虹纹现象消失。另外，增加设置第二分光光学膜还可以增加分光的效果。
 附图说明
下面结合附图，通过对本申请的具体实施方式详细描述，将使本申请的技术方案及其有益效果显而易见。
图1为本申请实施例提供的背光模组的第一种结构示意图。
图2为图1所示的背光模组中第二分光光学膜的尺寸示意图。
图3为图1所示的背光模组中第一分光光学膜、第二分光光学膜和第三分光光学膜的第一种结构示意图。
图4为图1所示的背光模组中第一分光光学膜、第二分光光学膜和第三分光光学膜的第二种结构示意图。
图5为图1所示的背光模组中第一分光光学膜、第二分光光学膜和第三分光光学膜的第三种结构示意图。
 本发明的实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述。显然，所描述的实施例仅仅是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
请参阅图1和图2，图1为本申请实施例提供的背光模组的第一种结构示意图，图2为图1所示的背光模组中第二分光光学膜的尺寸示意图。本申请实施例提供一种背光模组100，该背光模组100包括发光单元10、第一分光光学膜20、第二分光光学膜30和第三分光光学膜40。其中，第一分光光学膜20设置在发光单元10的一侧，第一分光光学膜20远离发光单元10的一侧设置有多个第一微结构透镜210；第二分光光学膜30设置在第一分光光学膜20远离发光单元10的一侧，第二分光光学膜30远离第一分光光学膜20的一侧设置有多个第二微结构透镜310；第三分光光学膜40设置在第二分光光学膜30远离第一分光光学膜20的一侧，第三分光光学膜40远离第一分光光学膜20的一侧设置有多个第三微结构透镜410；其中，第一微结构透镜210的结构和第三微结构透镜410的结构均与第二微结构透镜310的结构不同，且第一微结构透镜210的形状和第三微结构透镜410的形状相同。本申请实施例通过在第一分光光学膜20和第三分光光学膜40之间设置第二分光光学膜30，且第二分光光学膜30的微结构透镜的结构与第一分光光学膜20和第三分光光学膜40上的微结构透镜的结构不同，进而可以使第一分光光学膜20和第三分光光学膜40之间产生的彩虹纹现象消失。另外，设置第二分光光学膜30还可以增加分光的效果。
其中，如本文所定义的，“光学膜”可以理解为聚合物膜。“分光光学膜”可以是在至少一个表面上包括多个分光微透镜或微结构的聚合物膜。“微结构透镜”是这样一种微结构，当准直光束在轴线上被引导至微结构透镜时，准直光束被分成两个或更多个光束，在轴线上具有较低相对强度的区域。
微结构透镜可以是棱镜的形式并且将入射光束分成两束，两束之间的角度取决于棱镜角和棱镜材料的折射率。在实施例中，微结构透镜可以是四棱锥的形式并且将入射的同轴光束分成四个光束。在实施例中，微结构透镜可以是锥形的形式并且将入射的同轴光束分成锥形环。微结构透镜的具体形式可以根据实际情况进行设置，在此不作具体的限制。
需要强调的是，第一分光光学膜20靠近发光单元10的一面、第二分光光学膜30靠近发光单元10的一面和第三分光光学膜40靠近发光单元10的一面均为雾面或无阵列结构。
其中，第一微结构透镜210的形状和第三微结构透镜410的形状相同可以理解为第一微结构透镜210和第三微结构透镜410为同一种形状或型号相同，即棱边数量一致，且第一微结构透镜210的尺寸和第三微结构透镜410的尺寸的差值在预设范围内。例如，在一些实施例中，第一微结构透镜210的结构和第三微结构透镜410的结构可以都是倒四棱锥或倒三棱锥，且第一微结构透镜210的尺寸和第三微结构透镜410的尺寸的差值小于预设值。
请参阅图2，以图2为例对第一微结构透镜210的尺寸进行说明，其中，第一微结构透镜210的高度b为第一微结构透镜在垂直于发光单元10的方向上的最大长度为高度。第一微结构透镜210的宽度a为第一微结构透镜在发光单元10上投影宽度。第一微结构透镜210的顶角角度c为如截面图中所示，两个最外侧边之间的夹角。在以下实施例中的高度、宽度和顶角角度的定义如图2所示，以下不在赘续。
示例性的，在一些实施例中，第三微结构透镜410的宽度与第一微结构透镜210的宽度的差值大于或等于第三预设值。例如，第三预设值可以是5um，第三微结构透镜410的宽度为100 um，第一微结构透镜210的宽度为105 um，则第一微结构透镜210的宽度与第三微结构透镜410的宽度的差值等于第三预设值。其中，第三预设值的具体数值、第一微结构透镜210的宽度和第三微结构透镜410的宽度可以根据实际情况进行设置，在此不作具体的限制。
在一些实施例中，第三微结构透镜410的高度与第一微结构透镜210的高度的差值大于或等于第四预设值。例如，第四预设值可以是5um，第三微结构透镜410的高度为50 um，第一微结构透镜210的高度为45um，则第一微结构透镜210的高度与第三微结构透镜410的高度的差值等于第四预设值。其中，第四预设值的具体数值、第一微结构透镜210的高度和第三微结构透镜410的高度可以根据实际情况进行设置，在此不作具体的限制。
在其他一些实施例中，第三微结构透镜410的宽度与第一微结构透镜210的宽度的差值大于或等于第三预设值，且第三微结构透镜410的高度与第一微结构透镜210的高度的差值大于或等于第四预设值。其中，需要说明的是，第三预设值和第四预设值可以相同也可以不相同，具体的可以根据实际情况进行设置，在此不作具体的限定。
在其他一些实施例中，第一微结构透镜210的尺寸和第三微结构透镜410的尺寸相同。
本申请实施例通过设置第一微结构透镜210的形状和第三微结构透镜410的形状相同，且第一微结构透镜210的尺寸和第三微结构透镜410的尺寸的差值在预设范围内，使得来自发光单元10的原始光束被分成多个光束并进一步的传播，增强了分光效果。但是，第一分光光学膜20和第三分光光学膜40叠加在一起时，棱锥方向在光源透过后会发生干涉现象引起彩虹纹或斜条纹。因此，在保证分光效果的基础上，通过在第一分光光学膜20和第三分光光学膜40之间增加了第二分光光学膜30，且第一微结构透镜210的结构和第三微结构透镜410的结构均与第二微结构透镜310的结构不同以抵消了彩虹纹现象，还进一步的提高了分光效果。
需要说明的是，第一微结构透镜210的结构和第三微结构透镜410的结构均与第二微结构透镜310的结构不同，可以是第一微结构透镜210的形状、第二微结构透镜310的形状和第三微结构透镜410的形状相同，但第二微结构透镜310的尺寸和第一微结构透镜210的尺寸和第三微结构透镜410的尺寸不同。也可以是第二微结构透镜310的形状与第一微结构透镜210的形状和第三微结构透镜410的形状均不相同。也可以是第二微结构透镜310的形状与第一微结构透镜210的形状和第三微结构透镜410的形状均不相同，且第二微结构透镜310的尺寸和第一微结构透镜210的尺寸和第三微结构透镜410的尺寸不同。
其中，第二微结构透镜310的形状与第一微结构透镜210的形状和第三微结构透镜410的形状均不相同可以理解为第二微结构透镜310的形状为倒四棱锥，第一微结构透镜210的形状和第三微结构透镜410的形状均为倒三棱锥。也可以理解为第二微结构透镜310的形状为倒三棱锥，第一微结构透镜210的形状和第三微结构透镜410的形状均为倒四棱锥。可以理解的是，第一微结构透镜210的形状、第二微结构透镜310的形状和第三微结构透镜410的形状无论是倒四棱锥还是倒三棱锥，在第一分光光学膜至发光单元10的第一方向上，第一微结构透镜210的横截面、第二微结构透镜310的横截面和第三微结构透镜410的横截面均为三角形。需要强调的是，本申请实施例以第一微结构透镜210、第二微结构透镜310和第三微结构透镜410的结构为倒四棱锥或倒三棱锥为例进行说明的，而不应理解为对此的限制，微结构透镜的具体结构可以根据实际情况进行设置，在此不做具体的限制。
其中，第一微结构透镜210的形状、第二微结构透镜310的形状和第三微结构透镜410的形状相同，但第二微结构透镜310的尺寸和第一微结构透镜210的尺寸和第三微结构透镜410的尺寸不同可以理解为以下情形。例如，示例性的，在一些实施例中，第一微结构透镜210、第二微结构透镜310和第三微结构透镜410均为倒四棱锥或倒三棱锥，第一微结构透镜210的宽度和第三微结构透镜410的宽度均与第二微结构透镜310的宽度不同。在一些实施例中，第一微结构透镜210、第二微结构透镜310和第三微结构透镜410均为倒四棱锥或倒三棱锥，第一微结构透镜210的高度和第三微结构透镜410的高度均与第二微结构透镜310的高度不同。在一些实施例中，第一微结构透镜210、第二微结构透镜310和第三微结构透镜410均为倒四棱锥或倒三棱锥，第一微结构透镜210的顶角角度和第三微结构透镜410的顶角角度均与第二微结构透镜310的顶角角度不同。可以理解的是，还可以是第一微结构透镜210的高度、宽度和顶角角度和第二微结构透镜310的高度、宽度和顶角角度中任意两个不同，也还可以第一微结构透镜210的高度、宽度和顶角角度和第二微结构透镜310的高度、宽度和顶角角度都不相同。具体的根据实际情况进行设置即可，在此不作具体的限定。本申请实施例通过将第二微结构透镜310的尺寸设置成与第一微结构透镜210的尺寸和第三微结构透镜410的尺寸不同，就可以抵消彩虹纹现象。
示例性的，在一些实施例中，第二微结构透镜310的宽度与第一微结构透镜210的宽度的差值大于或等于第一预设值。例如，第一预设值可以是10 um，第二微结构透镜310的宽度为110 um，第一微结构透镜210的宽度为100 um，则第一微结构透镜210的宽度与第二微结构透镜310的宽度的差值等于第一预设值。其中，第三预设值的具体数值、第一微结构透镜210的宽度和第三微结构透镜410的宽度可以根据实际情况进行设置，在此不作具体的限制。
在一些实施例中，第二微结构透镜310的高度与第一微结构透镜210的高度的差值大于或等于第二预设值。例如，第二预设值可以是10 um，第二微结构透镜310的高度为55um，第一微结构透镜210的高度为45 um，则第一微结构透镜210的高度与第二微结构透镜310的高度的差值等于第二预设值。其中，第三预设值的具体数值、第一微结构透镜210的高度和第二微结构透镜310的高度可以根据实际情况进行设置，在此不作具体的限制。
在一些实施例中，第二微结构透镜310的宽度与第一微结构透镜210的宽度的差值大于或等于第一预设值，且第二微结构透镜310的高度与第一微结构透镜210的高度的差值大于或等于第二预设值。具体的可见上述的分别示例，在此不再赘叙。
需要说明的是，第三预设值小于第一预设值，第四预设值小于第二预设值。通过如此设置可以保证第一微结构透镜210的尺寸和第三微结构透镜410的尺寸相同，且第二微结构透镜310的尺寸和第一微结构透镜210的尺寸不同，进而通过第二分光光学膜30调整第一分光光学膜20和第三分光光学膜40之间产生的彩虹纹，以此保证分光效果。
其中，第二微结构透镜310的尺寸和第一微结构透镜210的尺寸不同可以是第二微结构透镜310的尺寸可以比第一微结构透镜210的尺寸大，也可以是第二微结构透镜310的尺寸可以比第一微结构透镜210的尺寸小。
示例性的，请继续参阅图3，图3为图1所示的背光模组中第一分光光学膜、第二分光光学膜和第三分光光学膜的第一种结构示意图。在一些实施例中，第二微结构透镜310的宽度大于第一微结构透镜210的宽度。在一些实施例中，第二微结构透镜310的高度大于第一微结构透镜210的高度。在一些实施例中，第二微结构透镜310的宽度大于第一微结构透镜210的宽度，且第二微结构透镜310的高度大于第一微结构透镜210的高度。
在一些实施例中，第二微结构透镜310的宽度小于第一微结构透镜210的宽度。在一些实施例中，第二微结构透镜310的高度小于第一微结构透镜210的高度。在一些实施例中，第二微结构透镜310的宽度小于第一微结构透镜210的宽度，且第二微结构透镜310的高度小于第一微结构透镜210的高度。
请继续参阅图4，图4为图1所示的背光模组中第一分光光学膜、第二分光光学膜和第三分光光学膜的第二种结构示意图。在一些实施例中，多个第一微结构透镜210在第一分光光学膜20上的密度和多个第二微结构透镜310在第二分光光学膜30上的密度不相同。其中，密度不相同可以是多个第一微结构透镜210在第一分光光学膜20上的密度大于多个第二微结构透镜310在第二分光光学膜30上的密度，也可以是多个第一微结构透镜210在第一分光光学膜20上的密度小于多个第二微结构透镜310在第二分光光学膜30上的密度，在此不作具体的限制。
请继续参阅图5，图5为图1所示的背光模组中第一分光光学膜、第二分光光学膜和第三分光光学膜的第三种结构示意图。在一些实施例中，相邻两个第三微结构透镜410之间的间距为第一间距d1，相邻两个第一微结构透镜210之间的间距为第二间距d2，第一间距d1和第二间距d2不同。其中，第一间距d1和第二间距d2不同可以是第一间距d1大于第二间距d2，也可以是第一间距d1小于第二间距d2，在此不作具体的限制。
本申请实施例还提供一种显示面板，包括上述任一项所述的背光模组100。
在上述实施例中，对各个实施例的描述都各有侧重，某个实施例中没有详述的部分，可以参见其他实施例的相关描述。
以上对本申请实施例所提供的背光模组100和显示面板进行了详细介绍，本文中应用了具体个例对本申请的原理及实施方式进行了阐述，以上实施例的说明只是用于帮助理解本申请的方法及其核心思想；同时，对于本领域的技术人员，依据本申请的思想，在具体实施方式及应用范围上均会有改变之处，综上，本说明书内容不应理解为对本申请的限制。

Claims (20)

  1. 一种背光模组，其中，所述背光模组包括：
    发光单元；
    第一分光光学膜，设置在所述发光单元的一侧，所述第一分光光学膜远离所述发光单元的一侧设置有多个第一微结构透镜；
    第二分光光学膜，设置在所述第一分光光学膜远离所述发光单元的一侧，所述第二分光光学膜远离所述第一分光光学膜的一侧设置有多个第二微结构透镜；
    第三分光光学膜，设置在所述第二分光光学膜远离所述第一分光光学膜的一侧，所述第三分光光学膜远离所述第一分光光学膜的一侧设置有多个第三微结构透镜；
    其中，所述第一微结构透镜的结构和所述第三微结构透镜的结构均与所述第二微结构透镜的结构不同，且所述第一微结构透镜的形状和第三微结构透镜的形状相同。
  2. 根据权利要求1所述的背光模组，其中，所述第一分光光学膜靠近所述发光单元的一面、所述第二分光光学膜靠近所述发光单元的一面和所述第三分光光学膜靠近所述发光单元的一面均为雾面。
  3. 根据权利要求2所述的背光模组，其中，所述第一微结构透镜的形状、所述第二微结构透镜的形状和所述第三微结构透镜的形状相同；所述第二微结构透镜的尺寸和所述第一微结构透镜的尺寸以及所述第三微结构透镜的尺寸不同。
  4. 根据权利要求3所述的背光模组，其中，在所述第一分光光学膜至所述发光单元的第一方向上，所述第一微结构透镜的横截面、所述第二微结构透镜的横截面和第三微结构透镜的横截面均为三角形；
    其中，所述第一微结构透镜的宽度和所述第三微结构透镜的宽度均与所述第二微结构透镜的宽度不同；
    所述第一微结构透镜的高度和所述第三微结构透镜的高度均与所述第二微结构透镜的高度不同；和/或
    所述第一微结构透镜的顶角角度和所述第三微结构透镜的顶角角度均与所述第二微结构透镜的顶角角度不同。
  5. 根据权利要求4所述的背光模组，其中，所述第二微结构透镜的宽度与所述第一微结构透镜的宽度的差值大于或等于第一预设值；和/或
    所述第二微结构透镜的高度与所述第一微结构透镜的高度的差值大于或等于第二预设值。
  6. 根据权利要求5所述的背光模组，其中，所述第三微结构透镜的宽度与所述第一微结构透镜的宽度的差值大于或等于第三预设值，所述第三预设值小于所述第一预设值；和/或
    所述第三微结构透镜的高度与所述第一微结构透镜的高度的差值大于或等于第四预设值，所述第四预设值小于所述第二预设值。
  7. 根据权利要求6所述的背光模组，其中，所述第二微结构透镜的宽度大于所述第一微结构透镜的宽度；和/或
    所述第二微结构透镜的高度大于所述第一微结构透镜的高度。
  8. 根据权利要求6所述的背光模组，其中，所述第二微结构透镜的宽度小于所述第一微结构透镜的宽度；和/或
    所述第二微结构透镜的高度小于所述第一微结构透镜的高度。
  9. 根据权利要求1所述的背光模组，其中，所述多个第一微结构透镜在所述第一分光光学膜上的密度和所述多个第二微结构透镜在所述第二分光光学膜上的密度不相同。
  10. 根据权利要求1所述的背光模组，其中，相邻两个所述第三微结构透镜之间的间距为第一间距，相邻两个所述第一微结构透镜之间的间距为第二间距，所述第一间距和所述第二间距不同。
  11. 一种显示面板，其中，所述显示面板包括背光模组，所述背光模组包括：
    发光单元；
    第一分光光学膜，设置在所述发光单元的一侧，所述第一分光光学膜远离所述发光单元的一侧设置有多个第一微结构透镜；
    第二分光光学膜，设置在所述第一分光光学膜远离所述发光单元的一侧，所述第二分光光学膜远离所述第一分光光学膜的一侧设置有多个第二微结构透镜；
    第三分光光学膜，设置在所述第二分光光学膜远离所述第一分光光学膜的一侧，所述第三分光光学膜远离所述第一分光光学膜的一侧设置有多个第三微结构透镜；
    其中，所述第一微结构透镜的结构和所述第三微结构透镜的结构均与所述第二微结构透镜的结构不同，且所述第一微结构透镜的形状和第三微结构透镜的形状相同。
  12. 根据权利要求11所述的显示面板，其中，所述第一分光光学膜靠近所述发光单元的一面、所述第二分光光学膜靠近所述发光单元的一面和所述第三分光光学膜靠近所述发光单元的一面均为雾面。
  13. 根据权利要求12所述的显示面板，其中，所述第一微结构透镜的形状、所述第二微结构透镜的形状和所述第三微结构透镜的形状相同；所述第二微结构透镜的尺寸和所述第一微结构透镜的尺寸以及所述第三微结构透镜的尺寸不同。
  14. 根据权利要求13所述的显示面板，其中，在所述第一分光光学膜至所述发光单元的第一方向上，所述第一微结构透镜的横截面、所述第二微结构透镜的横截面和第三微结构透镜的横截面均为三角形；
    其中，所述第一微结构透镜的宽度和所述第三微结构透镜的宽度均与所述第二微结构透镜的宽度不同；
    所述第一微结构透镜的高度和所述第三微结构透镜的高度均与所述第二微结构透镜的高度不同；和/或
    所述第一微结构透镜的顶角角度和所述第三微结构透镜的顶角角度均与所述第二微结构透镜的顶角角度不同。
  15. 根据权利要求14所述的显示面板，其中，所述第二微结构透镜的宽度与所述第一微结构透镜的宽度的差值大于或等于第一预设值；和/或
    所述第二微结构透镜的高度与所述第一微结构透镜的高度的差值大于或等于第二预设值。
  16. 根据权利要求15所述的显示面板，其中，所述第三微结构透镜的宽度与所述第一微结构透镜的宽度的差值大于或等于第三预设值，所述第三预设值小于所述第一预设值；和/或
    所述第三微结构透镜的高度与所述第一微结构透镜的高度的差值大于或等于第四预设值，所述第四预设值小于所述第二预设值。
  17. 根据权利要求16所述的显示面板，其中，所述第二微结构透镜的宽度大于所述第一微结构透镜的宽度；和/或
    所述第二微结构透镜的高度大于所述第一微结构透镜的高度。
  18. 根据权利要求16所述的显示面板，其中，所述第二微结构透镜的宽度小于所述第一微结构透镜的宽度；和/或
    所述第二微结构透镜的高度小于所述第一微结构透镜的高度。
  19. 根据权利要求11所述的显示面板，其中，所述多个第一微结构透镜在所述第一分光光学膜上的密度和所述多个第二微结构透镜在所述第二分光光学膜上的密度不相同。
  20. 根据权利要求11所述的显示面板，其中，相邻两个所述第三微结构透镜之间的间距为第一间距，相邻两个所述第一微结构透镜之间的间距为第二间距，所述第一间距和所述第二间距不同。
PCT/CN2023/104024 2023-01-31 2023-06-29 一种背光模组和显示面板 Ceased WO2024159697A1 (zh)

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