WO2020258755A1

WO2020258755A1 - Color conversion assembly, display panel and fabrication method for color conversion assembly

Info

Publication number: WO2020258755A1
Application number: PCT/CN2019/125164
Authority: WO
Inventors: 姜博; 王岩
Original assignee: 成都辰显光电有限公司
Priority date: 2019-06-28
Filing date: 2019-12-13
Publication date: 2020-12-30
Also published as: KR102590282B1; KR20210151226A; CN112151571A; CN112151571B

Abstract

A color conversion assembly, a display panel, and a fabrication method for a color conversion assembly, the color conversion assembly comprising: a substrate; a scattering layer disposed on the substrate; a light collimating layer disposed on a side of the scattering layer away from the substrate, the light collimating layer comprising a plurality of light collimating units; and a color conversion film, comprising a light blocking layer, a plurality of channels penetrating the light blocking layer, and color conversion units distributed within at least part of the channels, wherein at least part of the light collimating units are provided corresponding to the color conversion units. The color conversion assembly may limit the exit light of the color conversion units within a certain angle by means of the light collimating layer so as to prevent viewing angle color shift, and may also use the scattering layer to ensure that the exit light of the substrate has a larger viewing angle so as to improve a display effect.

Description

Color conversion component, display panel and manufacturing method of color conversion component

Cross references to related applications

This application claims the priority of the Chinese patent application No. 201910577278.8 filed on June 28, 2019, titled "Color conversion component, display panel, and color conversion component manufacturing method", the entire content of which is incorporated by reference In this article.

Technical field

This application relates to the technical field of display devices, and in particular to a manufacturing method of a color conversion component, a display panel, and a color conversion component.

Background technique

Flat display devices such as Liquid Crystal Display (LCD) devices, Organic Light Emitting Diode (OLED) display devices, and display devices using Light Emitting Diode (LED) devices have high image quality and low cost. 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 display device can realize the display of supporting color patterns through a variety of colorization schemes, including the realization of colorization by adding a layer of color film on the light-emitting substrate. However, in the solution of using color film for display, usually light mixing occurs between the light emitting units, which causes the problem of visual role deviation.

Summary of the invention

The embodiment of the present application provides a color conversion component, a display panel, and a manufacturing method of the color conversion component, aiming to solve the problem of deviating roles.

One aspect of the embodiments of the present application provides a color conversion component, including: a substrate; a scattering layer disposed on the substrate; a light collimating layer disposed on the side of the scattering layer away from the substrate, the light collimating layer includes a plurality of light collimating layers Unit; color conversion film, including a light blocking layer, a plurality of channels penetrating the light blocking layer, and color conversion units distributed in at least part of the channels, wherein at least part of the light collimation unit is set corresponding to the color conversion unit.

The color conversion component of the embodiment of the present application includes a substrate, a scattering layer, a light collimating layer, and a color conversion film. Therefore, the light transmitted by the color conversion film passes through the light collimating layer and the scattering layer in sequence, and finally hits the substrate. When the emitted light passing through the color conversion unit passes through the collimating layer, the light collimating unit can limit the emitted light to a certain angle, preventing light mixing and viewing angle deviation, and ensuring high consistency of the emitted spectrum under different viewing angles Sex. Further, when the emitted light passes through the scattering layer, the angle of the emitted light on the substrate can be increased, thereby increasing the viewing angle. Therefore, the color conversion component of the embodiments of the present application can not only limit the emitted light through the color conversion unit within a certain angle through the collimating layer to prevent the viewing angle deviation, but also ensure that the emitted light of the substrate has a larger viewing angle through the scattering layer. , Improve the display effect.

According to an embodiment of an aspect of the present application, the light collimating unit includes at least two barrier walls extending along the thickness direction of the color conversion component, and a light emitting space and an opening communicating with the light emitting space are formed between adjacent barrier walls, and the color The light of the conversion unit exits from the opening through the light exit space. When the angle of the emitted light of the color conversion unit is too large, it will be blocked by the barrier wall, so that the emitted light that meets the requirement of the emitted angle is emitted from the opening to the scattering layer, effectively preventing color mixing caused by the excessively large incident light angle of the scattering layer.

According to any one of the foregoing embodiments of the present application, the extended thickness of the barrier wall is 0.5 μm to 5 μm; and/or the minimum distance between two adjacent barrier walls is 0.3 μm to 10 μm. The extension thickness of the barrier wall is 0.5μm～5μm, which can prevent the barrier wall from being too thick to affect the light output, and at the same time prevent the barrier wall from being too thin to reduce the light collimation effect and prevent the light output space from being too small to affect the light output. The minimum distance between two adjacent barrier walls is 0.3 μm-10 μm, which can prevent the light output space from being too large to affect the light collimation effect.

According to one of the foregoing embodiments of the present application, the barrier wall is made of a light-absorbing material or a light-reflecting material; or, the outer surface of the barrier wall is coated with a light-absorbing film or a light-reflecting film. When the emitted light greater than a certain angle reaches the barrier wall, it will be absorbed or reflected by the barrier wall.

According to any one of the foregoing embodiments in one aspect of the present application, the barrier wall contains scattering particles. When the light larger than a certain angle is directed towards the scattering particles, it will be scattered, so the emitted light larger than a certain angle can be continuously scattered by the barrier wall in the light emitting space to meet the requirements of the emitting angle.

According to any one of the foregoing embodiments in one aspect of the present application, there are scattering particles in the scattering layer. When the emitted light passes through the scattering particles, it will be scattered, so as to achieve the purpose of scattering.

According to any one of the foregoing embodiments of one aspect of the present application, the scattering layer includes a plurality of scattering structures protruding from the substrate toward the light collimating layer. When the emitted light passes through the scattering structure, it will be reflected by each surface of the scattering structure, thereby increasing the exit angle.

According to any one of the foregoing embodiments in one aspect of the present application, it further includes a Bragg reflective layer, which is disposed between the scattering layer and the color conversion film. Through the Bragg reflective layer, the light of the specified color can be transmitted through, and the light in the preset wavelength band can be reflected back to the color conversion unit, which improves the absorption and conversion rate of the light emitted by the color conversion unit.

According to any one of the foregoing embodiments in one aspect of the present application, the Bragg reflective layer is disposed between the scattering layer and the light collimating layer. When the outgoing light passes through the light collimation layer, the light whose exit angle meets the exit angle requirement exits and enters the Bragg reflective layer. Therefore, the incident angle and optical path of the light entering the Bragg reflective layer are more consistent, thereby improving the reflection effect of the Bragg reflective layer, improving the filtering effect of the Bragg reflective layer on the light emitted by the light source, and further avoiding color shift.

Another aspect of the embodiments of the present application also provides a display panel, including:

The driving backplane is provided with multiple light sources;

The above-mentioned color conversion components are arranged corresponding to the driving backplane, so that multiple channels and multiple light sources are respectively arranged correspondingly.

Another aspect of the embodiments of the present application also provides a method for manufacturing a color conversion component, including:

Provide a substrate on which a scattering layer is formed;

Forming a first flattening layer on the scattering layer, and forming a light collimating layer on the first flattening layer, the light collimating layer including a plurality of light collimating units;

Forming a third flattening layer on the first flattening layer, the thickness of the third flattening layer is greater than or equal to the extension length of the light collimating unit in the thickness direction;

A color conversion film is formed on the third leveling layer. The color conversion film includes a light blocking layer, a plurality of channels penetrating the light blocking layer, and color conversion units distributed in at least part of the channels.

Description of the drawings

By reading the following detailed description of the non-limiting embodiments with reference to the accompanying drawings, other features, purposes and advantages of the present application will become more apparent, wherein the same or similar reference signs represent the same or similar features.

FIG. 1 is a schematic structural diagram of a color conversion component according to an embodiment of the present application;

2 is a schematic diagram of a scattering layer structure of a color conversion component according to an embodiment of the present application;

3 is a schematic diagram of the structure of the scattering layer of a color conversion component according to another embodiment of the present application;

4 is a schematic diagram of the collimation layer structure of a color conversion component according to an embodiment of the present application;

5 is a schematic diagram of the collimation layer structure of a color conversion component according to another embodiment of the present application;

6 is a schematic diagram of a collimating layer structure of a color conversion component according to another embodiment of the present application;

FIG. 7 is a schematic diagram of a collimation layer structure of a color conversion component according to another embodiment of the present application;

8 is a schematic diagram of the collimation layer structure of a color conversion component according to another embodiment of the present application;

9 is a schematic diagram of the collimation layer structure of a color conversion component according to still another embodiment of the present application;

FIG. 10 is a schematic structural diagram of a display panel according to an embodiment of the present application;

11 is a schematic flowchart of a method for manufacturing a color conversion component according to an embodiment of the present application;

12a to 12j are schematic diagrams of a molding process flow of a color conversion component according to an embodiment of the present application.

Detailed ways

The features and exemplary embodiments of various aspects of the present application will be described in detail below. In the following detailed description, many specific details are proposed in order to provide a comprehensive understanding of this application. However, it is obvious to those skilled in the art that this application can be implemented without some of these specific details. The following description of the embodiments is only to provide a better understanding of the present application by showing examples of the present application. In the drawings and the following description, at least part of the well-known structures and technologies are not shown in order to avoid unnecessary obscurity of the application; and, for clarity, the size of some structures may be exaggerated. In addition, the features, structures or characteristics described below may be combined in one or more embodiments in any suitable manner.

In order to better understand the present application, the color conversion component, the display panel, and the manufacturing method of the color conversion component of the embodiment of the present application will be described in detail below with reference to Figs. 1 to 12j.

1 is a color conversion component provided by an embodiment of the application. The color conversion component includes: a substrate 100; a scattering layer 200 disposed on the substrate 100; a light collimating layer 300 disposed on the side of the scattering layer 200 away from the substrate 100, The light collimating layer 300 includes a plurality of light collimating units 300a; the color conversion film 400 includes a light blocking layer 410, a plurality of channels 411 penetrating the light blocking layer 410, and at least part of the color conversion units 420 in the channels 411, wherein, At least part of the light collimating unit 300a is provided corresponding to the color conversion unit 420.

Preferably, the light collimating unit 300a is provided corresponding to the color conversion unit 420. That is, each light collimating unit 300a is provided corresponding to each color conversion unit 420. Each color conversion unit 420 corresponds to a light collimating unit 300 a, so that all the light emitted from the color conversion film 400 can pass through the light collimating unit 300 a and be directed toward the scattering layer 200.

The color conversion component in the embodiment of the present application includes a substrate 100, a scattering layer 200, a light collimating layer 300, and a color conversion film 400. Therefore, the light transmitted by the color conversion film 400 passes through the light collimating layer 300 and the scattering layer 200 in sequence. , And finally shoot to the substrate 100. When only the color conversion unit 420 is provided, the exit angle of the emitted light passing through the color conversion unit 420 is too large, resulting in the problem of easy light mixing. However, when the light emitted from the color conversion unit 420 passes through the light collimating layer 300, the light collimating unit 300a can limit the emitted light to a certain angle, preventing light mixing and viewing angle deviation, and ensuring the emission spectrum under different viewing angles. Has a high consistency. Further, when the emitted light passes through the scattering layer 200, the angle of the emitted light on the substrate 100 can be increased, thereby increasing the viewing angle. Therefore, the present application can not only use the light collimating layer 300 to limit the emitted light of the color conversion unit 420 to a certain angle to prevent deviation of the visual role, but also ensure that the emitted light of the substrate 100 has a larger viewing angle through the scattering layer 200, thereby improving display effect.

The substrate 100 can be arranged in various ways. The substrate 100 can be a hard cover plate such as glass, or the substrate 100 can be a flexible cover plate.

The scattering layer 200 can be arranged in various ways. For example, as shown in FIG. 2, the scattering layer 200 has scattering particles 220 therein. When the emitted light passes through the scattering particles 220, it will be scattered, so as to achieve the purpose of scattering. There are many ways to arrange the scattering particles 220. For example, the scattering particles 220 are organic polymer microspheres, such as polymethylmethacrylate, polysiloxane, etc.; or the scattering particles 220 are inorganic microspheres, such as silver nanoparticles, Silicon dioxide, titanium dioxide microspheres, etc. The scattering layer 200 can be prepared by processes such as inkjet printing, spin coating, and blade coating.

Please refer to FIG. 3 together. In other optional embodiments, the scattering layer 200 includes a plurality of scattering structures 210 protruding from the substrate 100 toward the light collimating unit 300a. When the emitted light passes through the scattering structure 210, it will be reflected by each surface of the scattering structure 210, thereby increasing the exit angle.

The scattering structure 210 can be arranged in a variety of ways. For example, the scattering structure 210 is a lens structure, and the cross section of the scattering structure 210 along the thickness direction is any of an arc, a sawtooth, a polygon, and a combination thereof. Further preferably, the scattering structure 210 is spherical or hemispherical, and a plurality of scattering structures 210 are arranged in an array on the surface of the substrate 100, so as to ensure the uniformity of the scattering effects of the scattering structures 210 on the substrate 100. This kind of scattering structure 210 can be made by a process such as nanoimprinting. In other preferred embodiments, the substrate 100 is made of glass, the shape of the scattering structure 210 is irregular, and the scattering structure 210 is made by roughening the glass surface to facilitate the preparation of the scattering layer 200.

The light collimating unit 300a can be arranged in various ways. In some optional embodiments, the light collimating unit 300a includes at least two barrier walls extending along the thickness direction of the color conversion component (the Z direction in FIG. 1). 310. A light exit space 320 and an opening communicating with the light exit space 320 are formed between adjacent barrier walls 310, so that the light passing through the color conversion unit 420 exits through the light exit space 320 through the opening. The opening communicating with the light exit space 320 is located on the side of the barrier wall 310 away from the color conversion film 400.

The thickness direction is the stacking direction of each layer structure in the color conversion component, and each layer structure in the color conversion component is stacked along the thickness direction.

In these alternative embodiments, the emitted light of the color conversion unit 420 passes through the light output space 320. When the angle of the emitted light of the color conversion unit 420 is too large, it will be blocked by the barrier wall 310, so that the emitted light that meets the requirements of the output angle The opening is directed toward the scattering layer 200 to effectively prevent the color mixing problem caused by the excessively large incident light angle of the scattering layer 200.

The light-emitting space 320 can be arranged in a variety of ways. For example, the light-emitting space 320 is formed by at least two barrier walls 310 arranged at intervals. At this time, the light-emitting space 320 also has a gap in the direction perpendicular to the thickness direction of the color conversion component.

Preferably, the light-emitting space 320 is enclosed and formed by at least two barrier walls 310, and the opening and the color conversion unit 420 are disposed oppositely. The emitted light of the color conversion unit 420 is emitted from the opening instead of other positions, which further ensures that the emitted light of the light collimating unit 300a has a smaller emission angle.

The number of light-emitting spaces 320 is not limited, and at least two barrier walls 310 corresponding to the color conversion unit 420 are enclosed to form one or more light-emitting spaces 320. Preferably, at least two barrier walls 310 corresponding to the color conversion unit 420 are enclosed to form a plurality of light exit spaces 320, which can not only reduce the angle of light emitted by the light collimating layer 300, but also ensure that the color conversion unit 420 is different. The angles of the light emitted from the light collimating layer 300 at different positions tend to be the same to ensure the light-emitting effect.

The shape of the barrier ribs 310 is not limited here. As shown in FIGS. 4 to 6, the orthographic projection of at least two barrier ribs 310 on the substrate 100 in the thickness direction is striped, and the at least two barrier ribs 310 include first barriers. The wall 311 and the second barrier wall 312, at least two first barrier walls 311 are spaced apart, and the second barrier wall 312 surrounds the outer circumference of the at least two first barrier walls 311, so that the first barrier wall 311 and the second barrier wall 312 is enclosed to form a light-emitting space 320. Preferably, the at least two first barrier walls 311 are equally spaced and spaced apart to improve the uniformity of the size of the light exit spaces 320, thereby improving the uniformity of the light exiting angle of the light collimating layer 300.

The extension direction of the first barrier wall 311 and the extension length of the first barrier wall 311 are not limited herein. For example, the color conversion unit 420 is rectangular, and the first barrier wall 311 extends along the length direction or the width direction of the color conversion unit 420. The extension length of the barrier wall 310 refers to the longest distance that the barrier wall 310 extends on a plane perpendicular to the thickness direction.

For example, as shown in FIG. 4, the first barrier ribs 311 are formed to extend along the length direction of the color conversion unit 420, and at least two first barrier ribs 311 are arranged at intervals along the width direction of the color conversion unit 420. At this time, there are two second barrier walls 312, and the two second barrier walls 312 are separately provided at both ends of the at least two first barrier walls 311 along the length direction of the color conversion unit 420.

Alternatively, as shown in FIG. 5, the first barrier ribs 311 are formed to extend along the width direction of the color conversion unit 420, and at least two first barrier ribs 311 are arranged at intervals along the length direction of the color conversion unit 420. At this time, there are two second barrier walls 312, and the two second barrier walls 312 are separately provided at two ends of the at least two first barrier walls 311 along the width direction of the color conversion unit 420.

Alternatively, as shown in FIG. 6, the first barrier wall 311 is formed to extend along the diagonal of the color conversion unit 420, and at least two first barrier walls 311 are arranged at intervals. At this time, there are four second barrier walls 312, and the four second barrier walls 312 are respectively disposed on the outer peripheral side of at least two first barrier walls 311.

In other optional embodiments, as shown in FIG. 7, the orthographic projection of the at least two barrier walls 310 on the substrate 100 in the thickness direction is in a grid shape, and the at least two barrier walls 310 include a shape extending in the first direction. The first barrier wall 311 and the second barrier wall 312 formed along the second direction, at least two first barrier walls 311 are spaced apart, at least two second barrier walls 312 are spaced apart, the first direction, the second direction and Intersect each other in the thickness direction.

Further preferably, at least two first barrier walls 311 are distributed at equal intervals, and/or at least two second barrier walls 312 are distributed at equal intervals, so as to further improve the uniformity of the dimensions between the light exit spaces 320.

As shown in FIG. 9, in other alternative embodiments, the orthographic projection of at least two barrier walls 310 on the substrate 100 in the thickness direction encloses in a honeycomb shape. Alternatively, as shown in FIG. 8, at least two barrier walls 310 are a plurality of columnar bodies independent of each other, and the orthographic projection of the barrier walls 310 on the substrate 100 in the thickness direction is a circle or a polygon. The uniformity of the size of each light-emitting space 320 is ensured, and the uniformity of the light-emitting angle of the light collimating layer 300 is improved.

There are many options for the extension thickness of the barrier wall 310. Preferably, the extension thickness of the barrier wall 310 is 0.5 μm to 5 μm. To prevent the barrier wall 310 from being too thick to affect the light output, and to prevent the barrier wall 310 from being too thin to reduce the light collimation effect. Wherein, the extension thickness of the barrier wall 310 refers to the shortest distance that the barrier wall 310 extends on a plane perpendicular to the thickness direction. Of course, the extended thickness of the barrier wall 310 can also be selected in other ways.

There are many options for the size of the light-emitting space 320. Preferably, the minimum distance between two adjacent barrier walls 310 is 0.3 μm-10 μm, that is, the minimum width of the light-emitting space 320 is 0.3 μm-10 μm. To prevent the light output space 320 from being too small to affect the light output efficiency, and to prevent the light output space 320 from being too large to affect the light collimation effect. Of course, the size of the light-emitting space 320 can also adopt other options.

The barrier wall 310 can be made of various materials. Preferably, the barrier wall 310 is made of light-absorbing material, such as black light-absorbing material. When the emitted light larger than a certain angle reaches the barrier wall 310, it will be absorbed by the barrier wall 310 to prevent the emitted light larger than a certain angle from being emitted from the opening. Alternatively, the barrier wall 310 is made of reflective material, such as reflective metal. Therefore, the emitted light larger than a certain angle can be continuously reflected by the barrier wall 310 in the light-emitting space 320 into the emitted light that meets the requirements of the emission angle. Alternatively, the outer surface of the barrier wall 310 is coated with a light-absorbing film or a light-reflecting film, so as to achieve the purpose of light absorption or reflection. Of course, the barrier wall 310 can also be made of other materials.

In other optional embodiments, the barrier wall 310 has scattering particles 220 inside. When light larger than a certain angle is directed toward the scattering particles 220, it will be scattered. Therefore, the emitted light larger than a certain angle can be continuously scattered by the barrier 310 in the light-emitting space 320 into the emitted light that meets the requirement of the emitting angle.

In still other optional embodiments, the light exit space 320 is filled with a first material, and the barrier wall 310 is made of a second material, and the refractive index of the first material is greater than the refractive index of the second material. Light propagating upward within a certain angle can be totally reflected in the high refractive index material and propagate upward. Light greater than a certain angle will not be totally reflected, but will be emitted laterally and finally absorbed by the light blocking layer 410 of the color conversion film 400, so that the emitted light maintains a certain degree of light collimation.

When the light exit space 320 is filled with the first material and the barrier wall 310 is made of the second material, the distance between the two barrier walls 310 is greater than the extension thickness of the barrier wall 310. That is, the size of the light exit space 320 is larger than the size of the barrier wall 310, so that more light is reflected in the high refractive index material, and the light output is increased.

There are many ways to arrange the color conversion film 400. For example, when the color conversion film 400 is applied to a display panel, the channels 411 on the color conversion film 400 are arranged in an array, and the channels 411 are arranged corresponding to each sub-pixel of the display panel.

When the color conversion film 400 is applied to a display panel, the color conversion unit 420 is distributed in at least a part of the channels 411 according to a predetermined rule according to the pixel arrangement of the display panel. There are many ways to set up the color conversion unit 420. For example, the color conversion unit 420 includes a red conversion unit and a green conversion unit. The red conversion unit can convert the light of the light source 600 into red light, and the green conversion unit can convert the light of the light source 600 into Green light. The color conversion unit 420 may include, for example, quantum dots (QDs), and the quantum dots emit red light or green light when excited by the light emitted by the light source 600.

The predetermined rule example is the pixel arrangement rule, and the red-green color conversion unit 420 is correspondingly distributed in the channel 411 according to the red and green sub-pixel positions in the pixel arrangement rule.

The arrangement of the color conversion component is not limited to this. For example, the color conversion component also includes a Bragg reflective layer 500, which is disposed between the scattering layer 200 and the color conversion film 400. The Bragg reflective layer 500 can transmit the light of the specified color, and reflect the light in the preset wavelength band back to the color conversion unit 420, which improves the absorption and conversion rate of the light emitted by the light source 600 by the color conversion unit 420.

There are many ways to dispose the Bragg reflective layer 500. For example, when the color conversion component is applied to a display panel whose light source 600 is a blue light source 600, the blue light is converted into red or green light through the color conversion unit 420, due to the color conversion unit 420 The absorption of blue light is limited, so some blue light will leak out. The Bragg reflector can reflect blue light back to the color conversion unit 420, that is, the Bragg reflective layer 500 can reflect blue light back to the color conversion unit 420, which improves the absorption and conversion rate of blue light by the color conversion unit 420.

There are many options for the placement of the Bragg reflective layer 500. The Bragg reflective layer 500 can be placed between the scattering layer 200 and the light collimating layer 300, or the Bragg reflective layer 500 can be placed between the light collimating layer 300 and the color conversion film 400. . Preferably, the Bragg reflection layer 500 is disposed between the scattering layer 200 and the light collimating layer 300. In these embodiments, when the outgoing light passes through the light collimating layer 300, the light whose exit angle meets the exit angle requirement exits and enters the Bragg reflective layer 500. Therefore, the incident angle and optical path of the light entering the Bragg reflective layer 500 are relatively consistent, thereby improving the reflection effect of the Bragg reflective layer 500, improving the filtering effect of the Bragg reflective layer 500 on the light emitted by the light source 600, and further avoiding color shift. For example, when the light emitted by the light source 600 is blue, the Bragg reflective layer 500 is disposed between the scattering layer 200 and the light collimating layer 300 to improve the blue light filtering effect of the Bragg reflective layer 500.

Please also refer to FIG. 10. The second embodiment of the present application further provides a display panel including the color conversion component of any of the above embodiments. Since the display panel of the embodiment of the present application includes the above-mentioned color conversion component, the display panel of the embodiment of the present application has the beneficial effects of the above-mentioned color conversion component, which will not be repeated here.

There are many ways to set up the display panel. In some optional embodiments, the display panel further includes a driving backplane 700. The driving backplane 700 is provided with a plurality of arrays of light sources 600, light sources 600 and color conversion films 400. The multiple channels 411 are respectively set correspondingly, so that the light emitted by the light source 600 can be emitted through the channel 411 or the color conversion unit in the channel 411.

The third embodiment of the present application also provides a display device including the above-mentioned display panel. The display devices in the embodiments of this application include, but are not limited to, mobile phones, personal digital assistants (Personal Digital Assistant, PDA for short), tablet computers, electronic paper books, televisions, access control, smart fixed phones, consoles, etc., with display functions equipment. Since the display device of the present application includes the above-mentioned display panel, the display device of this embodiment has the beneficial effects of the above-mentioned display panel, which will not be repeated here.

Please refer to FIG. 11 together. This application also provides a method for manufacturing a color conversion component, including:

Step S01: A substrate 100 is provided, and a scattering layer 200 is formed on the substrate 100.

Step S02: forming a first flattening layer 810 on the scattering layer 200, and forming a light collimating layer 300 on the first flattening layer 810.

The light collimating layer 300 includes a plurality of light collimating units 300a, and the light collimating units 300a are used to limit the angle of the emitted light.

Step S03: forming a third flattening layer 830 on the first flattening layer 810.

In order to ensure the flatness of the surface of the third flattening layer 830 away from the first flattening layer 810, the thickness of the third flattening layer 830 is greater than or equal to the extension length of the light collimating unit 300a in the thickness direction.

Step S04: forming a color conversion film 400 on the third flattening layer 830.

The color conversion film 400 includes a light blocking layer 410, a plurality of channels 411 penetrating the light blocking layer 410, and color conversion units 420 distributed in at least a part of the channels 411. The color conversion unit 420 and the light collimating unit 300a are arranged correspondingly, so that the light collimating unit 300a can limit the emitted light of the color conversion unit 420.

There are many manufacturing methods for the color conversion component. In some optional embodiments, a third flattening layer 830 is directly formed on the first flattening layer 810.

Or, in other optional embodiments, step S02 includes: forming a first flattening layer 810 on the scattering layer 200, forming a Bragg reflective layer 500 on the first flattening layer 810, and continuing to form a second flattening layer 820, A light collimating layer 300 is formed on the second flattening layer 820. In order to ensure the flatness of the surface of the second flattening layer 820 away from the first flattening layer 810, the thickness of the second flattening layer 820 is greater than the thickness of the Bragg reflective layer 500. At this time, a second flattening layer 820 is provided between the first flattening layer 810 and the third flattening layer 830. Step S03 includes: continuing to form a third flattening layer 830 on the second flattening layer 820, and step S04 includes: forming a color conversion film 400 on the third flattening layer 830.

The following takes the color conversion component shown in Figure 1 as an example. Please refer to Figures 12a to 12j together to briefly describe the molding process of the color conversion component, including:

In the first step, as shown in FIG. 12a, a substrate 100 is provided. Preferably, the substrate 100 is a glass substrate.

In the second step, as shown in FIG. 12b, a scattering layer 200 is formed on the substrate 100. Preferably, the scattering layer 200 is a spherical scattering structure 210 distributed in an array.

In the third step, as shown in FIG. 12c, a first flattening layer 810 is formed on the scattering layer 200.

In the fourth step, as shown in FIG. 12d, a Bragg reflective layer 500 is formed on the first flattening layer 810.

Preferably, the Bragg reflective layer 500 may be provided only for areas that require reflection. For example, when the light source 600 is a blue light source, the Bragg reflective layer 500 may be provided only for the red and green sub-pixels.

In the fifth step, as shown in FIG. 12e, a second flattening layer 820 is formed on the Bragg reflective layer 500. The thickness of the second flattening layer 820 is greater than or equal to the thickness of the Bragg reflective layer 500.

In the sixth step, as shown in FIG. 12f, a light collimating layer 300 is formed on the second flattening layer 820.

The light collimating unit 300a of the light collimating layer 300 includes at least two barrier walls 310 extending along the thickness direction of the color conversion component. A light exit space 320 and an opening communicating with the light exit space 320 are formed between adjacent barrier walls 310, so that The light passing through the color conversion unit 420 is emitted to the scattering layer 200 from the opening through the light exit space 320.

In the seventh step, as shown in FIG. 12g, a third flattening layer 830 is continuously formed on the second flattening layer 820, and the thickness of the third flattening layer 830 is greater than or equal to the thickness of the light collimating layer 300.

In the eighth step, as shown in FIG. 12h, a patterned light blocking layer 410 is formed on the third flattening layer 830, and the light blocking layer 410 includes a channel 411 disposed therethrough.

In the ninth step, as shown in FIG. 12i, a color conversion unit 420 is formed in at least a part of the channel 411 to form a color conversion component.

In the process of using color conversion components to form a display panel, it may also include:

In the tenth step, as shown in FIG. 12j, a driving backplane 700 is provided, and a plurality of light sources 600 are arrayed on the driving backplane 700.

Finally, the driving backplane 700 with the light source 600 and the color conversion component are glued together using filler or the like to form a display panel. There are many ways to set the filler. In order to ensure the light transmission effect, it is preferable that the filler is a transparent heat-cured or UV-cured organic polymer, such as polymethyl methacrylate, polysiloxane, and polyimide. Wait.

This application can be implemented in other specific forms without departing from its inventive concept and essential characteristics. Therefore, the current embodiments are regarded as illustrative rather than restrictive in all aspects, and the scope of this application is defined by the appended claims rather than the foregoing description, and falls within the meaning and equivalents of the claims. All changes within the scope are included in the scope of this application.

Claims

A color conversion component, including:

Base

The scattering layer is arranged on the substrate;

A light collimating layer disposed on a side of the scattering layer away from the substrate, and the light collimating layer includes a plurality of light collimating units;

The color conversion film includes a light blocking layer, a plurality of channels penetrating the light blocking layer, and color conversion units distributed in at least part of the channels,

Wherein, at least part of the light collimating unit is provided corresponding to the color conversion unit.
The color conversion component according to claim 1, wherein the light collimating unit comprises at least two barrier walls extending along the thickness direction of the color conversion component, a light exit space is formed between adjacent barrier walls, and The opening communicating with the light exit space, and the light passing through the color conversion unit exits from the opening through the light exit space.
The color conversion component according to claim 2, wherein the light-emitting space is enclosed by the at least two barrier walls, the at least two barrier walls corresponding to the color conversion unit enclosed by one or more The light-emitting space.
The color conversion component of claim 3, wherein:

The orthographic projection of the at least two barrier walls on the substrate is in a stripe shape, and the at least two barrier walls include at least two first barrier walls distributed at intervals and surrounding the at least two first barrier walls The second barrier on the outer periphery.
4. The color conversion component of claim 4, wherein the at least two first barrier walls are distributed at equal intervals.
The color conversion component according to claim 3, wherein the orthographic projection of the at least two barrier walls on the substrate is in a grid shape, and the at least two barrier walls comprise at least two barrier walls extending in a first direction. The first barrier wall and at least two second barrier walls extending along the second direction, the at least two first barrier walls are spaced apart, the at least two second barrier walls are spaced apart, the first direction, the The second direction and the thickness direction intersect in pairs.
The color conversion component of claim 6, wherein the at least two first barrier walls are distributed at equal intervals; and/or, the at least two second barrier walls are distributed at equal intervals.
The color conversion component of claim 3, wherein:

The orthographic projection of the at least two barrier walls on the substrate encloses in a honeycomb shape;

Alternatively, the at least two barrier walls are a plurality of columnar bodies independent of each other, and the orthographic projection of the barrier walls on the substrate is a circle or a polygon.
The color conversion component of claim 2, wherein:

The extended thickness of the barrier wall is 0.5 μm-5 μm;

And/or, the minimum distance between two adjacent barrier walls is 0.3 μm-10 μm.
The color conversion component of claim 2, wherein:

The barrier wall is made of light-absorbing material or reflective material;

Alternatively, the outer surface of the barrier wall is coated with a light-absorbing film or a light-reflecting film.
3. The color conversion component of claim 2, wherein the barrier wall contains scattering particles.
4. The color conversion component of claim 2, wherein the light exit space is filled with a first material, the barrier wall is made of a second material, and the refractive index of the first material is greater than that of the second material The refractive index.
11. The color conversion component of claim 12, wherein the distance between two adjacent barrier walls is greater than the extension thickness of the barrier walls.
The color conversion component of claim 1, wherein the scattering layer contains scattering particles.
4. The color conversion component according to claim 1, wherein the scattering layer comprises a plurality of scattering structures protruding from the substrate toward the light collimating layer.
15. The color conversion component according to claim 15, wherein the cross section of the scattering structure along the thickness direction is any one of an arc shape, a sawtooth shape, a polygon shape, and a combination thereof.
4. The color conversion component of claim 1, further comprising a Bragg reflective layer disposed between the scattering layer and the color conversion film.
15. The color conversion component of claim 16, wherein the Bragg reflective layer is disposed between the scattering layer and the light collimating layer.
A display panel including:

A driving backplane, where a plurality of light sources are provided;

The color conversion component of any one of claims 1-18 is arranged corresponding to the driving backplane, so that a plurality of the channels and a plurality of the light sources are respectively arranged correspondingly.
A method for manufacturing color conversion components includes:

A substrate is provided on which a scattering layer is formed;

Forming a first flattening layer on the scattering layer, and forming a light collimating layer on the first flattening layer, the light collimating layer including a plurality of light collimating units;

Forming a third flattening layer on the first flattening layer, the thickness of the third flattening layer is greater than or equal to the extension length of the light collimating unit along the thickness direction;

A color conversion film is formed on the third leveling layer, and the color conversion film includes a light blocking layer, a plurality of channels penetrating the light blocking layer, and color conversion units distributed in at least part of the channels.