WO2021004086A1 - 色彩转化组件、显示面板及显示装置 - Google Patents

色彩转化组件、显示面板及显示装置 Download PDF

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Publication number
WO2021004086A1
WO2021004086A1 PCT/CN2020/080011 CN2020080011W WO2021004086A1 WO 2021004086 A1 WO2021004086 A1 WO 2021004086A1 CN 2020080011 W CN2020080011 W CN 2020080011W WO 2021004086 A1 WO2021004086 A1 WO 2021004086A1
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Prior art keywords
layer
light
color conversion
sub
channel
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PCT/CN2020/080011
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English (en)
French (fr)
Chinese (zh)
Inventor
赵改娜
王涛
顾杨
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成都辰显光电有限公司
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Priority to KR1020227001323A priority Critical patent/KR20220012995A/ko
Publication of WO2021004086A1 publication Critical patent/WO2021004086A1/zh

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    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/80—Constructional details
    • H10K59/8791—Arrangements for improving contrast, e.g. preventing reflection of ambient light
    • H10K59/8792—Arrangements for improving contrast, e.g. preventing reflection of ambient light comprising light absorbing layers, e.g. black layers
    • 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
    • G02F1/133509—Filters, e.g. light shielding masks
    • G02F1/133514—Colour filters
    • 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
    • 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
    • G02F1/133509—Filters, e.g. light shielding masks
    • G02F1/133512—Light shielding layers, e.g. black matrix
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/30—Devices specially adapted for multicolour light emission
    • H10K59/38—Devices specially adapted for multicolour light emission comprising colour filters or colour changing media [CCM]
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/80—Constructional details
    • H10K59/875—Arrangements for extracting light from the devices
    • H10K59/876—Arrangements for extracting light from the devices comprising a resonant cavity structure, e.g. Bragg reflector pair

Definitions

  • LCD Liquid Crystal Display
  • OLED Organic Light Emitting Diode
  • LED Light Emitting Diode
  • the advantages of electricity, thin body and wide range of applications have been widely used in various consumer electronic products such as mobile phones, TVs, personal digital assistants, digital cameras, notebook computers, desktop computers, and have become the mainstream of display devices.
  • the present application provides a color conversion component, a display panel and a display device to reduce the problem of cross-color between adjacent channels.
  • multiple channels of the black matrix layer may correspond to multiple sub-pixels of the display panel.
  • the color conversion layer is located in the first sub-channel, and the light converted by the color conversion layer needs to pass through the second sub-channel of the corresponding channel and then propagate out instead of directly diverging around, that is, the second sub-channel of the corresponding channel can affect the color conversion layer
  • the converted light converges to a certain extent, reducing the propagation of the light emitted from the channel to the area where the adjacent channel is located, thereby reducing the crosstalk with the light emerging from the adjacent channel, and reducing the occurrence of the channel between adjacent sub-pixels.
  • Cross color problem is
  • the second sub-channel of the channel containing the color conversion layer may be provided with a color filter component, which can prevent the light of at least one color other than the light converted by the color conversion layer from propagating to the corresponding channel, and improve the output light of the channel. Purity reduces the problem of poor color gamut when displaying the picture.
  • each second sub-channel includes a third opening and a fourth opening that are opposite in the thickness direction of the color conversion component, wherein the third opening is close to the first sub-channel, and each second At least part of the inner wall of the sub-channel is arranged obliquely with respect to the interface of the first sub-layer and the second sub-layer, and the size of the fourth opening is smaller than the size of the third opening.
  • the light passing through the second sub-channel is converged in the direction of the central axis of the second sub-channel, ensuring that the light extraction efficiency is at a reasonable value.
  • the propagation of light to the area where the adjacent channel is located is reduced, thereby reducing the crosstalk with the light emitted from the adjacent channel.
  • the color filter assembly includes a light absorption layer located in the second sub-channel of the channel containing the color conversion layer, and the light absorption layer can absorb light in the same wavelength range as the incident light.
  • the first distributed Bragg reflective layer can reflect light in the same wavelength range as the incident light, so that incident light that has not been completely converted by the color conversion layer can be reflected again to the color conversion layer for conversion, thereby improving the utilization of incident light. At the same time, the residual amount of incident light in the light emitted by the channel is reduced.
  • the color conversion component further includes: a transmission layer located in at least part of the channels where the color conversion layer is not provided among the plurality of channels, and the transmission layer allows light having the same wavelength range as the incident light to pass through. Over.
  • the color conversion component further includes: an anti-reflection film located on the side of the transmission layer opposite to the light incident side, so that the light in the corresponding channel of the transmission layer can be transmitted to the outside in a higher proportion , Improve the light energy utilization rate of incident light.
  • the third distributed Bragg reflective layer allows incident light to enter the channel, and reflects light of other colors that have been converted in the channel, so that the converted light is irradiated to the light source side opposite to the light source, thereby improving the utilization of light energy.
  • the color conversion component further includes: a reflective layer located on at least part of the inner wall of the channel.
  • the reflective layer can reflect the light in the channel, thereby further improving the light output efficiency of the color conversion component, and further reducing the cross-color problem between the channels of adjacent sub-pixels.
  • an embodiment of the present application provides a display device, which includes a display panel according to any one of the foregoing embodiments.
  • the display panel is a display panel using LED devices as an example for description.
  • the color conversion component converts the light emitted by the LED into target light of multiple colors for display.
  • FIG. 1 is a schematic cross-sectional structure diagram of a color conversion component according to an embodiment of the present application, wherein FIG. 1 shows the structure of a part of the color conversion component.
  • the color conversion component 100 includes a black matrix (BM) layer 120, a color conversion layer 130, and a color filter component 140.
  • BM black matrix
  • the black matrix layer 120 includes a first sublayer 121 and a second sublayer 122 that are stacked.
  • the black matrix layer 120 includes a plurality of channels AS. In some embodiments, multiple channel AS arrays are arranged.
  • Each channel AS includes a first sub-channel A1 passing through the first sub-layer 121 and a second sub-channel A2 passing through the second sub-layer 122 and communicating with the first sub-channel A1.
  • the first sub-channel A1 penetrates the first sub-layer 121 along the thickness direction of the color conversion component 100
  • the second sub-channel A2 penetrates the second sub-layer 122 along the thickness direction of the color conversion component 100.
  • the black matrix layer 120 is made of black light-absorbing material, and may be a colorant of black pigment or dye.
  • the black matrix layer 120 is made of materials including photosensitizers, black pigments, surfactants, film-forming resins, and solvents.
  • the black pigment may be titanium black, lignin black, composite oxide pigments such as iron or manganese, and combinations of the above-mentioned pigments.
  • the color conversion layer 130 is located in the first sub-channel A1 of at least a part of the channel AS, and the color conversion layer 130 can convert the incident light L1 into light of the target color.
  • the incident light L1 is irradiated in a direction passing through the first sub-channel A1 and the second sub-channel A2 in sequence, and the first sub-layer 121 is closer to the light incident side of the color conversion component than the second sub-layer 122 .
  • the color conversion layer 130 may be a layer structure that achieves color conversion by filtering, or may be a color conversion layer including a photoluminescent material, where the photoluminescent material may be quantum dot materials, fluorescent particles, and the like.
  • the color conversion layer is a quantum dot layer as an example.
  • the quantum dot layer is made of quantum dot materials that can form specific excitation wavelengths.
  • Quantum dot materials include but are not limited to zinc sulfide (ZnS) for the outer shell and cadmium selenide (CdSe), cadmium telluride (CdTe), and cadmium sulfide (
  • ZnS zinc sulfide
  • CdSe cadmium selenide
  • CdTe cadmium telluride
  • cadmium sulfide One or more quantum dot materials selected from CdS), indium phosphide (InP), and perovskite, the quantum dot material also includes a scatterer, such as titanium oxide, or silicon dioxide.
  • the incident light L1 may be a blue light
  • the color conversion layer 130 is located in at least a part of the first sub-channel A1 of the channel AS.
  • the first sub-channel A1 of the left channel AS and the first sub-channel A1 of the middle channel AS respectively contain the color conversion layer 130.
  • the color conversion layer 130 in the partial channel AS can convert red light.
  • the color conversion layer 130 in the first sub-channel A1 of the left channel AS is a red quantum dot layer, which absorbs the incident light of blue light. After L1, it is converted into red light and emitted outward.
  • the color conversion layer 130 in the partial channel AS can convert green light.
  • the color conversion layer 130 in the first sub-channel A1 of the middle channel AS is a green quantum dot layer, which absorbs the incident light L1 of blue light. After that, it is converted into green light and emitted outward.
  • the color of the incident light L1 and the color conversion method of the color conversion layer 130 are only an example, and in other embodiments, other configurations may be performed.
  • the incident light L1 may be ultraviolet (UV) light.
  • the first sub-channel A1 of each channel AS contains a color conversion layer 130, and the color conversion layer 130 in part of the channel AS is a quantum dot layer that converts incident light L1 into red light; partly;
  • the color conversion layer 130 in the channel AS is a quantum dot layer that converts incident light L1 into green light;
  • the color conversion layer 130 in a part of the channel AS is a quantum dot layer that converts the incident light L1 into blue light.
  • the color conversion layer 130 is not limited to converting the incident light L1 into red, green, and blue light.
  • the color conversion layer 130 in the first sub-channel A1 of the partial channel AS may convert the incident light L1 is converted into a quantum dot layer of yellow light, cyan light, etc.
  • the multiple channels AS of the black matrix layer 120 may correspond to multiple sub-pixels of the display panel.
  • the color conversion layer 130 is located in the first sub-channel A1, and the light converted by the color conversion layer 130 needs to pass through the second sub-channel A2 of the corresponding channel AS and then propagate outward instead of directly diverging around, that is, the second sub-channel of the corresponding channel AS.
  • the channel A2 can converge to a certain extent on the light converted by the color conversion layer 130, and reduce the propagation of the light emitted from the channel AS to the area where the adjacent channel AS is located, thereby reducing the crosstalk with the light emitted from the adjacent channel AS.
  • the cross-color problem between the channels AS corresponding to adjacent sub-pixels.
  • the second sub-channel A2 of the channel AS containing the color conversion layer 130 may be provided with a color filter component 140, which can prevent the light of at least one color other than the light converted by the color conversion layer 130 from propagating to the corresponding channel AS, improving The purity of the emitted light from this channel AS reduces the problem of poor color gamut when displaying images.
  • the color filter element 140 may be It is configured to prevent blue light from passing through, thereby reducing the residual blue light in the light emitted from the channel AS containing the color conversion layer 130.
  • each first sub-channel A1 includes a first opening K1 and a second opening K2 opposite in the thickness direction of the color conversion component 100, wherein the second opening K2 is close to the second sub-channel A2, correspondingly, The first opening K1 is away from the second sub-channel A2.
  • each first sub-channel A1 is arranged obliquely with respect to the interface of the first sub-layer 121 and the second sub-layer 122, and the size of the second opening K2 is larger than the size of the first opening K1.
  • the inclination angle of at least part of the inner wall of the first sub-channel A1 with respect to the interface between the first sub-layer 121 and the second sub-layer 122 can be determined according to the design requirements for the light energy utilization rate of the incident light and the AS pitch of the channel (for example, the corresponding pixel pitch ) The design needs to be configured.
  • the light in the first sub-channel A1 is reflected by the inner wall of the first sub-channel A1 toward the first
  • the directions of the two openings K2 propagate, while ensuring that the channel AS spacing (for example, the corresponding pixel spacing) is at a reasonable value, the light output efficiency and the utilization rate of the incident light L1 are improved.
  • each second sub-channel A2 includes a third opening K3 and a fourth opening K4 opposite in the thickness direction of the color conversion component 100, wherein the third opening K3 is close to the first sub-channel A1, and accordingly, The fourth opening K4 is far away from the first sub-channel A1.
  • the inclination angle of at least part of the inner wall of the first sub-channel A1 relative to the interface between the first sub-layer 121 and the second sub-layer 122 can be determined according to the design requirements for the light energy utilization rate of the incident light and the design requirements for the light convergence capability. Configuration.
  • the color conversion component 100 further includes a reflective layer 180.
  • the reflective layer 180 is located on at least part of the inner wall of the channel AS.
  • the reflective layer 180 may be a highly reflective material film layer plated on the inner wall of the channel AS, where the reflective material includes but is not limited to metal materials such as silver and aluminum.
  • the reflective layer 180 By providing the reflective layer 180, the light in the channel AS can be reflected, thereby further improving the light output efficiency of the color conversion component 100, and further reducing the cross-color problem between adjacent channels AS.
  • the light absorbing layer 141 is a photoresist layer mixed with light absorbing materials.
  • the incident light L1 is, for example, blue light
  • the light-absorbing material may be a dye that absorbs blue light, for example, a yellow dye.
  • the color filter assembly 140 may further include a first distributed Bragg reflection layer 142, and the first distributed Bragg reflection layer 142 is located between the color conversion layer 130 and the light absorption layer 141.
  • the first distributed Bragg reflective layer 142 is configured to allow the light converted by the color conversion layer 130 in the corresponding channel AS to pass through and reflect light of at least one other wavelength range.
  • the first distributed Bragg reflective layer 142 may be formed by stacking two kinds of films with high and low refractive indexes, and the combination of the two films includes but not limited to: TiO 2 film and Al 2 O 3 film, TiO 2 film and SiO 2 film , Ta 2 O 5 film and Al 2 O 3 film, HfO 2 film and SiO 2 film, in each combination, the former is a high refractive index film and the latter is a low refractive index film.
  • the first distributed Bragg reflective layer 142 may reflect light in the same wavelength range as the incident light L1, so that the incident light L1 that has not been completely converted by the color conversion layer 130 can be reflected again to the color conversion layer 130 for conversion. , Improve the utilization of incident light L1. At the same time, the residual amount of incident light L1 in the exit light of the channel AS is reduced.
  • the specific material and thickness of the film can be adjusted to make the first distributed Bragg reflective layer 142 more effective.
  • the color filter assembly 140 may further include a second distributed Bragg reflection layer 143, and the second distributed Bragg reflection layer 143 is located on the side of the light absorption layer 141 away from the color conversion layer 130.
  • the second distributed Bragg reflective layer 143 is configured to allow light converted by the color conversion layer 130 in the corresponding channel AS to pass through and reflect light of at least one other wavelength range.
  • the second distributed Bragg reflective layer 143 may be formed by stacking two kinds of films with high and low refractive indexes, and the combination of the two films includes but not limited to: TiO 2 film and Al 2 O 3 film, TiO 2 film and SiO 2 film , Ta 2 O 5 film and Al 2 O 3 film, HfO 2 film and SiO 2 film, in each combination, the former is a high refractive index film and the latter is a low refractive index film.
  • the second distributed Bragg reflective layer 143 can reflect light in the same wavelength range as the incident light L1, so that the incident light L1 that is not completely converted by the color conversion layer 130 and not absorbed by the light absorption layer 141 can be reflected again It is absorbed into the light absorption layer 141 to further reduce the residual amount of incident light L1 in the light emitted from the channel AS, and realize a wider color gamut during display.
  • the specific material and thickness of the film can be adjusted to make the second distributed Bragg reflective layer 143 more effective.
  • the color filter component 140 is not limited to the structure of the above example. In some embodiments, the color filter element 140 may only include the light absorbing layer 141; in some embodiments, the color filter element 140 may include the light absorbing layer 141 and the first distributed Bragg reflective layer 142; in some embodiments, The color filter component 140 may include a light absorbing layer 141 and a second distributed Bragg reflective layer 143; in some embodiments, the color filter component 140 may include a light absorbing layer 141, a first distributed Bragg reflective layer 142, and a second distribution at the same time. ⁇ Bragg reflection layer 143.
  • the color conversion component 100 further includes a transmission layer 150.
  • the transmission layer 150 is located in at least part of the channels AS where the color conversion layer 130 is not provided among the plurality of channels AS, wherein the transmission layer 150 allows light with the same wavelength range as the incident light L1 to pass through.
  • the transmission layer 150 may be a transparent photoresist layer.
  • the right channel AS contains a transmission layer 150.
  • the incident light L1 is blue light
  • the transmission layer 150 allows the blue light to pass through
  • the emitted light of the corresponding channel is blue light.
  • the exit light of the left channel AS is red
  • the exit light of the middle channel AS is green
  • the exit light of the right channel AS is blue
  • the channel AS that emits green light and the The channel AS array arrangement of blue light can realize the full-color display of the picture.
  • the transmission layer 150 is mixed with scattering particles, so that the light in the channel AS corresponding to the transmission layer 150 can spread out more uniformly, and the display effect is improved.
  • the scattering particles can be TiO 2 or other metal particles.
  • the color conversion component 100 further includes an anti-reflection film 160.
  • the anti-reflection film 160 is located on the side of the transmission layer 150 opposite to the light incident side, so that the light in the channel AS corresponding to the transmission layer 150 can be transmitted to the outside at a higher ratio, and the light energy utilization rate of the incident light L1 is improved.
  • the antireflection film 160 may be a narrowband blue light antireflection film.
  • the color conversion component 100 further includes a third distributed Bragg reflective layer 170.
  • the third distributed Bragg reflective layer 170 is located at the first opening K1 of at least part of the first sub-channel A1.
  • the third distributed Bragg reflective layer 170 is configured to allow light with the same wavelength range as the incident light L1 to pass through and reflect other at least A light of a wavelength range.
  • the third distributed Bragg reflective layer 170 may be formed by stacking two kinds of thin films with high and low refractive index.
  • the combination of the two thin films includes but not limited to: TiO 2 film and Al 2 O 3 film, TiO 2 film and SiO 2 film , Ta 2 O 5 film and Al 2 O 3 film, HfO 2 film and SiO 2 film, in each combination, the former is a high refractive index film and the latter is a low refractive index film.
  • a third distributed Bragg reflective layer 170 is provided at the first opening K1 of the first sub-channel A1 of each channel AS.
  • the third distributed Bragg reflective layer 170 may be configured to allow blue light to pass through and reflect red light and green light.
  • the specific material and thickness of the film can be adjusted to make the third distributed Bragg reflective layer 170 more effective.
  • the third distributed Bragg reflective layer allows incident light L1 to enter the channel AS, and reflects the light of other colors that have been converted in the channel AS, so that the converted light is directed toward the light source.
  • the light-emitting side of the side to improve the utilization rate of light energy.
  • the color conversion component 100 may further include a flat layer 110, and the flat layer 110 is located on the light incident side of the black matrix layer 120.
  • the flat layer 110 includes a flat surface 110a, the first sub-layer 121 of the black matrix layer 120 is located on the flat surface 110a of the flat layer 110, and the second sub-layer 122 is located on the first sub-layer 121 away from the flat layer 110.
  • the flat layer 110 may be made of organic materials, such as cardo resin, polyimide resin, or acrylic resin, and can provide a flat surface 110a for other layer structures or components of the color conversion layer 130.
  • the color conversion component 100 may further include a substrate 190, which is located on the side of the black matrix layer 120 opposite to the light incident side.
  • the substrate 190 is located on the side of the black matrix layer 120 away from the flat layer 110.
  • the substrate 190 and the flat layer 110 jointly seal a plurality of channels AS.
  • the material of the substrate 190 may be glass or a polymer material, and the optional polymer material is, for example, polycarbonate, polyvinyl chloride, polyester, acrylic resin, and the like.
  • the substrate 190 may be bonded to the black matrix layer 120 by an adhesive, and cover a plurality of channels AS. At the same time, the substrate 190 covers the second distributed Bragg reflector layer 143 and the antireflection film 160 corresponding to the channels AS. Wait.
  • the adhesive can be a high-transmittance optical glue material, such as thermosetting or UV-curable materials, and liquid optical transparent glue, etc., which can not only ensure good light transmittance, but also have a uniform light effect.
  • An embodiment of the present application further provides a display panel, which includes a light-emitting substrate and a color conversion component, wherein the color conversion component of the display panel may be the color conversion component 100 of any embodiment of the present application.
  • FIG. 2 is a schematic cross-sectional structure diagram of a display panel provided according to an embodiment of the present application.
  • the display panel 1000 includes a light-emitting substrate 200 and the color conversion component 100 of the foregoing embodiment.
  • the light-emitting substrate 200 has a light-emitting surface 200 a, and the light-emitting substrate 200 includes a plurality of light-emitting units 210. In some embodiments, a plurality of light emitting units 210 are arranged in an array. In this embodiment, the light-emitting substrate 200 is, for example, a light-emitting substrate using LED devices, wherein the plurality of light-emitting units 210 are respectively LED light-emitting units and are arranged in an array on the light-emitting surface 200a.
  • the LED light emitting unit may be a monochromatic LED light emitting unit, so that the plurality of light emitting units 210 emit light of the same color.
  • the light emitting unit 210 is a blue LED light emitting unit. In some embodiments, the light emitting unit 210 is a Micro-LED light emitting unit. In some embodiments, the light emitted by the light emitting unit 210 is the incident light L1 in the color conversion component 100 of the foregoing embodiment.
  • the light emitting substrate 200 is not limited to a light emitting substrate using LED devices.
  • the light-emitting substrate 200 may also be a light-emitting substrate for an OLED display panel or a light-emitting substrate for an LCD. That is, the light-emitting substrate 200 may include at least part of the functional layers of the OLED display panel. 100 is combined to obtain an OLED display panel; or the light-emitting substrate 200 may include at least part of the functional layer of the LCD, and the LCD is obtained by combining with the color conversion component 100.
  • the light-emitting substrate 200 is a light-emitting substrate using LED devices
  • its light-emitting unit 210 is not limited to a blue LED light-emitting unit.
  • the light-emitting unit 210 may also be an ultraviolet LED light-emitting unit.
  • the color conversion layer 130 in the color conversion component 100 is disposed on the light-emitting side of the light-emitting substrate 200.
  • the color conversion component 100 has a flat layer 110 disposed on the light incident side of the black matrix layer 120.
  • the flat layer 110 of the color conversion component 100 is disposed on the light-emitting surface 200a of the light-emitting substrate 200.
  • the flat layer 110 can be used to improve
  • the light emitting surface 200a of the light emitting substrate 200 is flat.
  • the light-emitting units 210 are arranged on the surface of the light-emitting surface 200 a and have a convex height relative to the light-emitting surface 200 a.
  • the thickness of the flat layer 110 may be greater than or equal to the convex height of the light-emitting unit 210.
  • the multiple channels AS of the color conversion component 100 correspond to the multiple light-emitting units 210 respectively.
  • the multiple light-emitting units 210 are all blue LED light-emitting units.
  • the light emitted by the blue LED light-emitting unit excites the color conversion layer 130, so that the light is converted into red light and emitted outward; in the middle channel AS in Figure 2, the light emitted by the blue LED light-emitting unit excites The color conversion layer 130 converts light into green light and emits it outward; in the right channel AS in FIG. 2, the blue light emitted by the blue LED light-emitting unit passes through the transmission layer 150 and emits blue light outward.
  • the channel AS that emits red light, the channel AS that emits green light, and the channel AS that emits blue light are arranged in an array to achieve full-color display of the picture.
  • An embodiment of the present application also provides a display device, which may include the display panel of any of the foregoing embodiments.
  • the display device is, for example, the display panel 1000 including the above-mentioned embodiments.
  • the display device may be a product or component with a TV function such as a mobile phone, a tablet computer, a TV, a display, a digital photo frame, or a navigator.
  • the multiple channels AS of the black matrix layer 120 of the color conversion assembly 100 may correspond to the multiple light-emitting units 210 of the light-emitting substrate 200, and correspondingly form the display panel 1000 Of multiple sub-pixels.
  • the color conversion layer 130 of the color conversion component 100 is located in the first subchannel A1, and the light converted by the color conversion layer 130 needs to pass through the second subchannel A2 of the corresponding channel AS and then propagate outward instead of directly diverging to the surroundings, that is, the corresponding channel
  • the second sub-channel A2 of the AS can converge to a certain extent on the light converted by the color conversion layer 130, and reduce the propagation of the light emitted from the channel AS to the area where the adjacent channel AS is located, thereby reducing the interference with the light emitted from the adjacent channel AS.
  • Mutual crosstalk reduces the cross-color problem between channels AS corresponding to adjacent sub-pixels.
  • the second sub-channel A2 of the channel AS containing the color conversion layer 130 may be provided with a color filter component 140, which can prevent the light of at least one color other than the light converted by the color conversion layer 130 from propagating to the corresponding channel AS, improving The purity of the emitted light of the channel AS alleviates the problem of poor color gamut when the display panel 1000 displays images.
  • the manufacturing process of the color conversion component 100 of the foregoing embodiment will be described below.
  • the manufacturing process of the above-mentioned color conversion component 100 is various.
  • the manufacturing process of the color conversion component 100 may be to gradually form the layers from the flat layer 110 to the substrate 190.
  • the manufacturing process of the color conversion element 100 may be to gradually form layers from the substrate 190 to the flat layer 110.
  • the manufacturing process of the color conversion component 100 may be formed by combining two sub-components.
  • the first sub-assembly and the second sub-assembly may be formed first.
  • the first sub-assembly includes a flat layer 110 and a first sub-layer 121 formed on one side surface of the flat layer 110, and the first sub-layer 121 includes a plurality of first sub-channels A1.
  • a third distributed Bragg reflective layer 170 is formed in the first sub-channel A1.
  • a color conversion layer 130 is formed in a part of the first sub-channel A1; a transmission layer 150 is formed in a part of the first sub-channel A1.
  • the second subassembly includes a substrate 190 and a second sublayer 122 formed on one side surface of the substrate 190, and the second sublayer 122 includes a plurality of second subchannels A2.
  • a color filter element 140 is formed in a part of the second sub-channel A2; a transmission layer 150 and an anti-reflection film 160 are formed in a part of the second sub-channel A2.
  • the first sub-assembly and the second sub-assembly can be combined, wherein the first sub-layer 121 and the second sub-layer 122 are opposed to each other, the flat layer 110 and the substrate 190 are disposed away from each other, and the plurality of first sub-channels A1 and the plurality of The two sub-channels A2 are respectively connected to each other to form the color conversion component 100 by splicing.
  • 3a to 3k are schematic diagrams of a cross-sectional structure of a manufacturing process of a color conversion component according to an embodiment of the present application.
  • a substrate 190 is provided.
  • a patterned second distributed Bragg reflective layer 143 and a patterned antireflection film 160 are formed on the surface of one side of the substrate 190.
  • the process of forming the second distributed Bragg reflective layer 143 may be physical vapor deposition, chemical vapor deposition, or other processes.
  • the second distributed Bragg reflective layer 143 can be set corresponding to the position of the channel for emitting red light and the channel for emitting green light.
  • the second distributed Bragg reflective layer 143 may be configured to allow red light and green light to pass through and reflect blue light.
  • the anti-reflection film 160 may be formed by plating. In some embodiments, the anti-reflection film 160 may be a blue anti-reflection film.
  • a patterned second sub-layer 122 is formed on one side surface of the substrate 190 with the second distributed Bragg reflective layer 143 and the anti-reflection film 160.
  • the second sublayer 122 is a sublayer of the black matrix layer 120.
  • the second sub-layer 122 includes a plurality of second sub-channels A2 arranged in an array, and each second sub-channel A2 has a third opening K3 and a fourth opening K4 opposite to each other, wherein the fourth opening K4 faces the substrate 190.
  • the process of forming the second sub-layer 122 includes filming, photolithography, laser processing, inkjet printing, 3D printing, screen printing, micro-contact printing, and the like.
  • the second distributed Bragg reflective layer 143 and the anti-reflection film 160 are respectively located in the corresponding second sub-channel A2.
  • a reflective layer 180 may be formed on at least part of the inner wall of the second sub-channel A2.
  • the process of forming the reflective layer 180 can be physical vapor deposition, chemical vapor deposition, etc.
  • the reflective layer 180 can be a highly reflective material film layer plated on the inner wall of the second sub-channel A2, wherein the reflective material includes but is not limited to silver and aluminum. And other metal materials.
  • a transmission layer 150 is formed in the second sub-channel A2 containing the antireflection film 160.
  • the process of forming the transmission layer 150 may be a printing process, a yellow light process, or the like. Scattering particles may be mixed in the transmission layer 150.
  • a light absorbing layer 141 is formed in the second sub-channel A2 containing the second distributed Bragg reflective layer 143.
  • the light absorbing layer 141 is a photoresist layer mixed with a light absorbing material, and the light absorbing material may be a dye that absorbs blue light, for example, a yellow dye.
  • the process of forming the light absorption layer 141 may be a printing process, a yellow light process, or the like.
  • a first distributed Bragg reflective layer 142 is formed in the second sub-channel A2 containing the light absorbing layer 141, so that part of the second sub-channel A2 has a first distributed Bragg reflective layer 142, a second distributed The color filter element 140 of the Bragg reflective layer 143 and the light absorbing layer 141, wherein the light absorbing layer 141 is sandwiched between the first distributed Bragg reflective layer 142 and the second distributed Bragg reflective layer 143.
  • the process of forming the first distributed Bragg reflective layer 142 may be physical vapor deposition, chemical vapor deposition, or other processes.
  • the first distributed Bragg reflective layer 142 may be configured to allow red light and green light to pass through and reflect blue light.
  • the first sublayer 121 is formed on the side of the second sublayer 122 away from the substrate 190.
  • the first sub-layer 121 is a sub-layer of the black matrix layer 120.
  • the first sub-layer 121 includes a plurality of first sub-channels A1 arranged in an array, and each first sub-channel A1 has a first opening K1 and a second opening K2 opposite to each other, wherein the second opening K2 faces the substrate 190.
  • the multiple first sub-channels A1 of the first sub-layer 121 and the multiple second sub-channels A2 of the second sub-layer 122 are respectively connected to form multiple channels AS, wherein the second opening K2 of the first sub-channel A1 is The third opening K3 of the two sub-channels A2 is connected to each other.
  • the process of forming the first sub-layer 121 includes film sticking, photolithography, laser processing, inkjet printing, 3D printing, screen printing, micro-contact printing, and the like.
  • a reflective layer 180 may be formed on at least part of the inner wall of the first sub-channel A1.
  • the process of forming the reflective layer 180 can be physical vapor deposition, chemical vapor deposition, etc.
  • the reflective layer 180 can be a highly reflective material film layer plated on the inner wall of the first sub-channel A1, wherein the reflective material includes but is not limited to silver and aluminum. And other metal materials.
  • a transmission layer 150 is formed in the first sub-channel A1 corresponding to the second sub-channel A2 containing the antireflection film 160 and the transmission layer 150.
  • the process of forming the transmission layer 150 may be a printing process, a yellow light process, or the like. Scattering particles may be mixed in the transmission layer 150.
  • the color conversion layer 130 is formed in the first sub-channel A1 corresponding to the second sub-channel A2 of the color filter element 140.
  • the color conversion layer 130 may be a quantum dot layer, and may be formed in the channel 121 through a printing process or a yellow light process.
  • the color conversion layer 130 may be configured into two or more types according to the light converted by it. For example, it may include a color conversion layer 130 that converts red light and a color conversion layer 130 that converts green light. In some embodiments, as shown in FIG. 3h, a color conversion layer 130 that converts to red light may be formed in the first sub-channel A1. Then, as shown in FIG. 3i, a color conversion layer 130 that converts to green light may be formed in the first sub-channel A1. It is understandable that the color conversion layer 130 that converts to green light may be formed first, and then the color conversion layer 130 that converts to red light is formed.
  • a third distributed Bragg reflective layer 170 is formed in at least part of the first opening K1 of the first sub-channel A1.
  • the process of forming the third distributed Bragg reflective layer 170 may be physical vapor deposition, chemical vapor deposition, or other processes.
  • the third distributed Bragg reflective layer 170 may be configured to allow blue light to pass through and reflect red and green light.
  • a flat layer 110 is formed on the side of the first sub-layer 121 away from the substrate 190.
  • the flat layer 110 may be made of organic materials, such as cardo resin, polyimide resin, or acrylic resin.
  • the color conversion component 100 of the above-mentioned embodiment of the present application is obtained.
  • the multiple channels AS of the black matrix layer 120 may correspond to multiple sub-pixels of the display panel.
  • the color conversion layer 130 is located in the first sub-channel A1, and the light converted by the color conversion layer 130 needs to pass through the second sub-channel A2 of the corresponding channel AS and then propagate outward instead of directly diverging around, that is, the second sub-channel of the corresponding channel AS
  • the channel A2 can converge to a certain extent on the light converted by the color conversion layer 130, and reduce the propagation of the light emitted from the channel AS to the area where the adjacent channel AS is located, thereby reducing the crosstalk with the light emitted from the adjacent channel AS.
  • the cross-color problem between the channels AS corresponding to adjacent sub-pixels.
  • the second sub-channel A2 of the channel AS containing the color conversion layer 130 may be provided with a color filter component 140, which can prevent the light of at least one color other than the light converted by the color conversion layer 130 from propagating to the corresponding channel AS, improving The purity of the emitted light from this channel AS reduces the problem of poor color gamut when displaying images.

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  • General Physics & Mathematics (AREA)
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PCT/CN2020/080011 2019-07-10 2020-03-18 色彩转化组件、显示面板及显示装置 WO2021004086A1 (zh)

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