KR102590282B1 - Color conversion assembly, display panel and manufacturing method of color conversion assembly - Google Patents

Abstract

The present disclosure relates to a color conversion assembly, a display panel, and a method of manufacturing the color conversion assembly, the color conversion assembly comprising: a substrate; a scattering layer disposed on the substrate; a light collimating layer disposed on one side far away from the substrate of the scattering layer and including a plurality of light collimating units; A color conversion film including a light-shielding layer, a plurality of channels passing through the light-shielding layer, and color conversion units in at least some of the channels, wherein at least some of the light collimating units are disposed to correspond to the color conversion units. The color conversion assembly not only prevents visual color deviation by limiting the light emitted from the color conversion unit within a certain angle through the light collimation layer, but also ensures that the light emitted from the substrate has a relatively large viewing angle through the scattering layer. , the display effect can be improved.

Description

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

This application claims the priority of the Chinese patent application filed on June 28, 2019, titled "Color conversion assembly, display panel and manufacturing method of color conversion assembly", application number 201910577278.8, and all of the patents in the application. The contents are incorporated herein by reference.

This disclosure relates to the field of displays, and more particularly to color conversion assemblies, display panels, and methods of manufacturing color conversion assemblies.

Flat display devices, such as liquid crystal display (LCD) devices, organic light emitting diode (OLED) displays, and displays using light emitting diode (LED) devices, have high image quality and power consumption. Because it has advantages such as a thin body and a wide application range, it is widely applied to various consumer electronic products such as mobile phones, televisions, personal information terminals, digital cameras, laptop computers, and desktop computers, making it the mainstream display device. It has been done.

A display device implements the display of a color pattern through various colorization methods. For example, colorization is implemented by adding a layer of color film on a light emitting substrate. However, in solutions that use color films to perform display, the problem of visual color deviation due to light mixing between light emitting units generally occurs.

The purpose of the present embodiment is to solve the problem of visual color deviation by providing a color conversion assembly, a display panel, and a method of manufacturing the color conversion assembly.

One aspect of the present disclosure provides a color conversion assembly, the color conversion assembly comprising: a substrate; a scattering layer disposed on the substrate; a light collimating layer disposed on one side far away from the substrate of the scattering layer and including a plurality of light collimating units; A color conversion film including a light-shielding layer, a plurality of channels penetrating the light-shielding layer, and color conversion units distributed within at least some of the channels, wherein at least some of the light collimating units are disposed to correspond to the color conversion units.

Since the color conversion assembly of the embodiment of the present application includes a substrate, a scattering layer, a light collimating layer, and a color conversion film, the light passing through the color conversion film sequentially passes through the light collimating layer and the scattering layer, and is finally irradiated to the substrate. When the emitted light that has passed through the color conversion unit passes through the collimation layer, the role of the light collimation unit is to limit the emitted light within a certain angle, preventing light mixing and visual color deviation, and the spectra emitted at different viewing angles are relatively It can be guaranteed to have high consistency. Additionally, when the emitted light passes through the scattering layer, the viewing angle can be increased by increasing the angle of the emitted light on the substrate. Therefore, the color conversion assembly of the embodiment of the present application not only prevents visual color deviation by limiting the emitted light of the color conversion unit within a certain angle through the light collimation layer, but also allows the emitted light of the substrate to have a relatively large viewing angle through the scattering layer. Since it is possible to ensure that the display effect is improved, the display effect can be improved.

According to an embodiment of an aspect of the present application, the light collimation unit includes at least two blocking walls extending along the thickness direction of the color conversion assembly, and a light exit space and a light exit space between adjacent blocking walls and communicating with the light exit space. An aperture is formed, and the light that passes through the color conversion unit passes through the light emission space and is emitted from the aperture. If the exit light angle of the color conversion unit is too large, it is blocked by the blocking wall, and the exit light that meets the exit angle requirement is irradiated from the aperture to the scattering layer, thereby eliminating the color mixing problem caused by the angle of the incident light in the scattering layer being too large. prevent it effectively.

According to any of the above embodiments of an aspect of the present application, the extended thickness of the barrier wall is 0.5 μm to 5 μm; and/or, the minimum spacing between two adjacent barriers is 0.3 μm to 10 μm. If the extended thickness of the blocking wall is 0.5μm to 5μm, it can prevent the blocking wall from being too thick and affecting the light output amount, while preventing the blocking wall from being too thin and reducing the light collimation effect, and the light exit space being too small. It can be prevented from affecting light output efficiency. If the minimum gap between two adjacent barriers is 0.3μm to 10μm, it can prevent the light exit space from being too large and affecting the light collimation effect.

According to any of the above embodiments of an aspect of the present disclosure, the barrier wall is made of a light-absorbing material or a light-reflecting material; Alternatively, a light absorbing film or a light reflecting film is applied to the outer surface of the blocking wall. When emitted light exceeding a certain angle reaches the blocking wall, it is absorbed or reflected by the blocking wall.

According to any of the above embodiments of one aspect of the present application, scattering particles are contained within the barrier wall. Since light rays exceeding a certain angle are scattered when irradiated to scattering particles, the emitted light exceeding a certain angle can be continuously scattered by the blocking wall within the light emitting space and become emitted light that satisfies the emission angle requirements. there is.

According to any of the above embodiments of one aspect of the present application, the scattering layer contains scattering particles. Since scattering occurs when the emitted light passes through the scattering particles, the purpose of scattering is achieved.

According to any of the above embodiments of an aspect of the present application, the scattering layer includes a plurality of scattering structures protruding from the substrate to the light collimating layer. When the exiting light passes through the scattering structure, it is reflected by each surface of the scattering structure, thereby increasing the exit angle.

According to one of the above embodiments of an aspect of the present application, it further includes a Bragg reflection layer disposed between the scattering layer and the color conversion film. By transmitting light of a specified color through the Bragg reflection layer and reflecting light within a preset wavelength band to the color conversion unit, the absorption and conversion rate of the color conversion unit for light emitted from the light source can be improved.

According to any of the above embodiments of an aspect of the present disclosure, the Bragg reflection layer is disposed between the scattering layer and the light collimation layer. When the emitted light passes through the optical collimation layer, a light beam whose emission angle satisfies the emission angle requirement is emitted and enters the Bragg reflection layer. Therefore, since the incident angle and optical path of the light entering the Bragg reflection layer are relatively consistent, the reflection effect of the Bragg reflection layer is improved, the light filtration effect of the Bragg reflection layer for the light emitted from the light source is improved, and color deviation is further reduced. prevent.

Another aspect of the present disclosure provides a display panel, the display panel comprising:

a driving backplate on which a plurality of light sources are arranged;

and the color conversion assembly, which is disposed correspondingly to the driving back plate, so that a plurality of channels and a plurality of light sources are respectively arranged in correspondence.

Another aspect of the embodiments herein also provides a method of manufacturing a color conversion assembly, the method of manufacturing the color conversion assembly comprising:

providing a substrate and forming a scattering layer on the substrate;

forming a first planarization layer on the scattering layer, and forming a light collimation layer on the first planarization layer, including a plurality of light collimation units;

forming a third planarization layer on the first planarization layer, wherein the thickness of the third planarization layer is not smaller than the extension length of the light collimating unit along the thickness direction;

A step of forming a color conversion film on the third planarization layer, wherein the color conversion film includes a light-shielding layer, a plurality of channels penetrating the light-shielding layer, and color conversion units distributed within at least some of the channels.

Other features, objects and advantages of the present application will become more apparent upon reading the following detailed description of non-limiting embodiments with reference to the accompanying drawings, wherein identical or similar reference numerals indicate identical or similar features.
1 is a structural schematic diagram of a color conversion assembly according to an embodiment of the present application.
Figure 2 is a structural schematic diagram of a scattering layer of a color conversion assembly according to an embodiment of the present application.
Figure 3 is a structural schematic diagram of a scattering layer of a color conversion assembly according to another embodiment of the present application.
Figure 4 is a structural schematic diagram of a collimation layer of a color conversion assembly according to an embodiment of the present application.
Figure 5 is a structural schematic diagram of a collimation layer of a color conversion assembly according to another embodiment of the present application.
Figure 6 is a structural schematic diagram of a collimation layer of a color conversion assembly according to another embodiment of the present application.
Figure 7 is a structural schematic diagram of a collimation layer of a color conversion assembly according to another embodiment of the present application.
Figure 8 is a structural schematic diagram of a collimation layer of a color conversion assembly according to another embodiment of the present application.
Figure 9 is a structural schematic diagram of a collimation layer of a color conversion assembly according to another embodiment of the present application.
Figure 10 is a structural schematic diagram of a display panel according to an embodiment of the present application.
Figure 11 is a flow chart of a manufacturing method of a color conversion assembly according to an embodiment of the present disclosure.
12A to 12J are flowcharts of the molding process of the color conversion assembly of the embodiment herein.

Hereinafter, features and exemplary embodiments of each aspect of the present application will be described in detail. In the following detailed description, numerous specific details are provided to provide a thorough understanding of the subject matter. However, it will be apparent to those skilled in the art that the invention may be practiced without some of these specific details. The following description of the examples is intended to provide a better understanding of the disclosure by way of illustration only. In the drawings and the following description, at least some of the well-known structures and techniques are omitted to avoid unnecessary ambiguity with respect to the present application, and the size of some structures may be exaggerated for clarity. Additionally, the features, structures, or characteristics described below may be combined in one or more embodiments in any suitable manner.

For a better understanding of the present application, the color conversion assembly, the display panel, and the manufacturing method of the color conversion assembly according to the embodiments of the present application will be described in detail below with reference to FIGS. 1 to 12J.

1 is a color conversion assembly provided by an embodiment of the present application, and the color conversion assembly includes a substrate 100; a scattering layer 200 disposed on the substrate 100; a light collimating layer 300 disposed on one side of the scattering layer 200 away from the substrate 100 and including a plurality of light collimating units 300a; A color conversion film 400 including a light blocking layer 410, a plurality of channels 411 penetrating the light blocking layer 410, and color conversion units 420 distributed within at least some of the channels 411, Here, at least some of the light collimating units 300a are arranged to correspond to the color conversion unit 420.

Preferably, the light collimation unit 300a is arranged to correspond to the color conversion unit 420. In other words, each light collimation unit 300a is arranged to correspond to each color conversion unit 420. Each color conversion unit 420 is associated with one light collimation unit 300a, and through this, all light emitted from the color conversion film 400 passes through the light collimation unit 300a and forms the scattering layer 200. ) to investigate.

Since the color conversion assembly of 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, the light transmitted by the color conversion film 400 sequentially passes through the light beam. It passes through the quasi-layer 300 and the scattering layer 200, and is finally irradiated to the substrate 100. When only the color conversion unit 420 is disposed, the exit angle of the emitted light that passes through the color conversion unit 420 is too large, and there is a problem in that light mixing easily occurs. However, when the emitted light that has passed through the color conversion unit 420 passes through the light collimating layer 300, the light collimating unit 300a restricts the emitted light within a certain angle to reduce light mixing and visual color deviation. It is possible to prevent this and ensure that the spectrum emitted from various viewing angles has relatively high consistency. Additionally, when the emitted light passes through the scattering layer 200, the viewing angle can be increased by increasing the angle of the emitted light on the substrate 100. Therefore, the present invention not only prevents visual color deviation by limiting the emitted light of the color conversion unit 420 within a certain angle through the light collimation layer 300, but also prevents visual color deviation from being emitted from the substrate 100 through the scattering layer 200. Since the light can be ensured to have a relatively large viewing angle, the display effect can be improved.

The arrangement method of the substrate 100 may vary, and the substrate 100 may be a hard cover plate such as glass or a flexible cover plate.

The arrangement of the scattering layer 200 may vary. For example, as shown in FIG. 2, the scattering layer 200 includes scattering particles 220. Since scattering occurs when the emitted light passes through the scattering particles 220, the purpose of scattering is achieved. There are various arrangements of the scattering particles 220, for example, the scattering particles 220 are organic polymer microspheres such as polymethyl methacrylate, polysiloxane, etc., or the scattering particles 220 are silver nanoparticles. , inorganic microspheres such as silicon dioxide, titanium dioxide microspheres, etc. The scattering layer 200 may be manufactured through processes such as inkjet printing, spin coating, and blade coating.

Referring also to FIG. 3 , in some alternative 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 is reflected by each surface of the scattering structure 210, thereby increasing the emission angle.

The arrangement of the scattering structure 210 may vary. For example, the scattering structure 210 is a lens structure, and the cross-section along the thickness direction of the scattering structure 210 is arc-shaped, sawtooth-shaped, polygonal, and combinations thereof. It is one type of More preferably, the scattering structure 210 is spherical or hemispherical, and the plurality of scattering structures 210 are distributed in an array on the surface of the substrate 100, so that the scattering structure 210 at each location on the substrate 100 The consistency of the scattering effect can be guaranteed. This scattering structure 210 can be manufactured through a process such as nano rolling printing. In some 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 manufactured by performing a roughening treatment on the glass surface, so that the scattering layer ( 200) makes it easy to manufacture.

The arrangement of the light collimating unit 300a may vary, and in some optional embodiments, the light collimating unit 300a is arranged to extend along the thickness direction (Z direction in FIG. 1) of the color conversion assembly. It includes at least two blocking walls 310, forms a light exit space 320 and an opening communicating with the light exit space 320 between adjacent blocking walls 310, and transmits the color conversion unit 420. One ray passes through the light emission space 320 and is emitted from the opening. The opening communicating with the light exit space 320 is located on one side of the blocking wall 310 away from the color conversion film 400 .

The thickness direction is the stacking direction of each layer structure in the color conversion assembly, and each layer structure in the color conversion assembly is stacked and arranged according to the thickness direction.

In this optional embodiment, the light emitted from the color conversion unit 420 passes through the light exit space 320, and if the angle of the emitted light from the color conversion unit 420 is too large, it is blocked by the blocking wall 310. And, by allowing the emitted light that satisfies the emission angle requirement to be irradiated from the aperture to the scattering layer 200, the color mixing problem caused by the incident light angle of the scattering layer 200 being too large is effectively prevented.

The arrangement of the light emission space 320 may vary. For example, the light emission space 320 is formed by at least two blocking walls 310 arranged at intervals, and at this time, the light emission space ( 320) also has a gap in a direction perpendicular to the thickness direction of the color conversion assembly.

Preferably, the light emission space 320 is surrounded by at least two blocking walls 310, and the opening and the color conversion unit 420 are disposed to face each other. Since the light emitted from the color conversion unit 420 is emitted from the aperture but not from other locations, the emitted light from the light collimating unit 300a is allowed to have a relatively small emission angle.

The number of light emission spaces 320 is not limited, and at least two blocking walls 310 are surrounded corresponding to the color conversion unit 420 to form one or more light emission spaces 320. Preferably, at least two blocking walls 310 are surrounded corresponding to the color conversion unit 420 to form a plurality of light exit spaces 320, so that the angle of the light exiting the light collimation layer 300 can be reduced. In addition, it is possible to ensure that the angle of the light emitted from the light collimating layer 300 corresponding to different positions of the color conversion unit 420 matches, and the light output effect can be guaranteed.

The shape of the blocking wall 310 is not limited here, and as shown in FIGS. 4 to 6, the orthogonal projection of at least two blocking walls 310 along the thickness direction on the substrate 100 shows a stripe shape, At least two blocking walls 310 include a first blocking wall 311 and a second blocking wall 312, the at least two first blocking walls 311 are arranged at intervals, and the second blocking wall ( 312) is surrounded by the outer periphery of at least two first blocking walls 311, and the first blocking wall 311 and the second blocking wall 312 are surrounded to form a light emission space 320. Preferably, at least two first blocking walls 311 are distributed at equal intervals to improve size consistency between each light exit space 320, so that the light emitted from the light collimating layer 300 Improves angle consistency.

The stretching direction of the first blocking wall 311 and the stretching length of the first blocking wall 311 are not limited here. For example, the color conversion unit 420 is rectangular, and the first blocking wall 311 is formed by stretching along the longitudinal or width direction of the color conversion unit 420. The stretching length of the blocking wall 310 refers to the longest distance over which the blocking wall 310 is stretched in a plane perpendicular to the thickness direction.

For example, as shown in FIG. 4, the first blocking wall 311 is stretched and formed along the longitudinal direction of the color conversion unit 420, and at least two first blocking walls 311 are formed in the color conversion unit 420. They are arranged at intervals along the width direction of 420. At this time, there are two second blocking walls 312, and the two second blocking walls 312 are disposed at both ends of at least two first blocking walls 311 along the longitudinal direction of the color conversion unit 420. .

Alternatively, as shown in FIG. 5, the first blocking wall 311 is stretched and molded along the width direction of the color conversion unit 420, and at least two first blocking walls 311 are formed in the color conversion unit 420. ) are arranged at intervals along the longitudinal direction. At this time, there are two second blocking walls 312, and the two second blocking walls 312 are disposed at both ends of at least two first blocking walls 311 along the width direction of the color conversion unit 420. do.

Alternatively, as shown in FIG. 6, the first blocking wall 311 is stretched and molded along the diagonal line of the color conversion unit 420, and at least two first blocking walls 311 are arranged at intervals. At this time, there are four second blocking walls 312, and each of the four second blocking walls 312 is disposed on the outer circumference of at least two first blocking walls 311.

In some other optional embodiments, as shown in FIG. 7, the orthogonal projection of at least two blocking walls 310 along the thickness direction on the substrate 100 represents a grid shape, and the at least two blocking walls 310 includes a first blocking wall 311 stretched and formed along a first direction, a second blocking wall 312 stretched and formed along a second direction, and at least two first blocking walls 311 are distributed at intervals, and at least two second blocking walls 312 are distributed at intervals, and the first direction, the second direction, and the thickness direction intersect each other two by two.

More preferably, at least two first blocking walls 311 are distributed at equal intervals; And/or, since at least two second blocking walls 312 are distributed at equal intervals, size consistency between each light emission space 320 can be further improved.

As shown in FIG. 9 , in some alternative embodiments, orthogonal projections of at least two blocking walls 310 along the thickness direction on the substrate 100 are enclosed and exhibit a honeycomb shape. Alternatively, as shown in FIG. 8, at least two blocking walls 310 are a plurality of independent columns, and the orthogonal projection of the blocking walls 310 along the thickness direction on the substrate 100 is circular or polygonal. The consistency of the size of each light emission space 320 is ensured, and the consistency of the emission angle of the light from the light collimation layer 300 is improved.

The stretched thickness of the blocking wall 310 can be selected from various options. Preferably, the stretched thickness of the blocking wall 310 is 0.5 μm to 5 μm. It prevents the blocking wall 310 from being too thick to affect the light output amount, and at the same time prevents the blocking wall 310 from being too thin, reducing the light collimation effect. Here, the stretched thickness of the blocking wall 310 is the blocking wall ( 310) refers to the shortest distance stretched in a plane perpendicular to the thickness direction. Of course, other options may be used for the stretched thickness of the barrier wall 310.

The size of the light exit space 320 can be selected in various ways, and preferably, the minimum gap between two adjacent blocking walls 310 is 0.3 μm to 10 μm, that is, the minimum width of the light exit space 320 is 0.3μm~10μm. It prevents the light output space 320 from being too small to affect the light output efficiency, and at the same time prevents the light output space 320 from being too large from affecting the light collimation effect. Of course, the size of the light emission space 320 may be determined by other choices.

There can be various choices of materials for making the blocking wall 310. Preferably, the blocking wall 310 is made of a light-absorbing material, for example, a black light-absorbing material. When emitted light exceeding a certain angle reaches the blocking wall 310, it is absorbed by the blocking wall 310 and prevents emitted light exceeding a certain angle from being emitted from the opening. Alternatively, the barrier wall 310 is made of a light-reflecting material, for example, a light-reflecting metal material. The emitted light exceeding a certain angle may be continuously reflected by the blocking wall 310 within the light emitting space 320 to become emitted light that satisfies the emission angle requirement. Alternatively, a light absorbing film or a light reflecting film is applied to the outer surface of the blocking wall 310 to achieve the purpose of light absorption or light reflection. Of course, other options may be used for the material from which the barrier 310 is made.

In some other alternative embodiments, the barrier wall 310 includes scattering particles 220. Since light exceeding a certain angle is scattered when irradiated to the scattering particles, the exit light exceeding a certain angle is continuously scattered by the blocking wall 310 within the light exit space 320, thereby satisfying the exit angle requirement. You can become a fan of going out.

In some alternative embodiments, the light exit space 320 is filled with a first material, the blocking wall 310 is made of a second material, and the refractive index of the first material is that of the second material. greater than the refractive index. Light rays propagating upward within a certain angle may be totally reflected in the high refractive index material and propagate upward. Light rays exceeding a certain angle are not totally reflected, but are emitted to the side, and are ultimately absorbed by the light-shielding layer 410 of the color conversion film 400, so that the emitted light maintains constant light collimation.

When the first material is filled in the light exit space 320 and the blocking wall 310 is made of the second material, the gap between the two blocking walls 310 is the stretched thickness of the blocking wall 310. exceeds In other words, the size of the light emission space 320 is larger than the size of the blocking wall 310, allowing more light rays to be reflected from the high refractive index material, thereby improving the amount of light output.

There are various arrangements of 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 represent an array distribution and the channels 411 and each sub-pixel of the display panel is arranged correspondingly.

When the color conversion film 400 is applied to the display panel, the color conversion units 420 are distributed in at least some channels 411 according to a predetermined rule according to the pixel arrangement of the display panel. There are various arrangements of the color conversion unit 420. For example, the color conversion unit 420 includes a red conversion unit and a green conversion unit, and the red conversion unit can convert the light from the light source 600 into red light. And the green conversion unit can convert the light ray 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 by excitation of light emitted from the light source 600.

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

The arrangement method of the color conversion assembly is not limited to this, and for example, the color conversion assembly further includes a Bragg reflection layer 500 disposed between the scattering layer 200 and the color conversion film 400. Light rays of a specified color are transmitted through the Bragg reflection layer 500, and rays within a preset wavelength band are reflected by the color conversion unit 420, and the color conversion unit 420 absorbs the rays emitted from the light source 600. and can improve the conversion rate.

There are various arrangements of the Bragg reflective layer 500. For example, when the color conversion assembly is applied to a display panel in which the light source 600 is a blue light source 600, the blue light passes through the color conversion unit 420 and becomes red light or It is converted into green light, and since the absorption of the color conversion unit 420 for blue light is limited, some blue light leaks. The Bragg reflection lens can reflect blue light to the color conversion unit 420, that is, the Bragg reflection layer 500 can reflect blue light to the color conversion unit 420, so the color conversion unit 420 for blue light It can improve absorption and conversion rates.

The placement position of the Bragg reflective layer 500 may be variously selected, and the Bragg reflective layer 500 may be disposed between the scattering layer 200 and the light collimating layer 300, or the Bragg reflective layer 500 may be placed between the light collimating layer 300. It may be disposed between (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 this embodiment, when the emitted light passes through the light collimation layer 300, the light whose emission angle satisfies the emission angle requirement is emitted and enters the Bragg reflection layer 500. Therefore, since the incident angle and optical path of the light ray entering the Bragg reflection layer 500 are relatively consistent, the reflection effect of the Bragg reflection layer 500 is improved, and the reflection effect of the Bragg reflection layer 500 for the light emitted from the light source 600 is improved. It improves the light filtration effect and further prevents color deviation. For example, when the light emitted from the light source 600 is blue and the Bragg reflection layer 500 is disposed between the scattering layer 200 and the light collimation layer 300, the light filtration of the Bragg reflection layer 500 for blue light The effect can be improved.

Referring to FIG. 10 together, a second embodiment of the present disclosure also provides a display panel including the color conversion assembly of any one of the above embodiments. Since the display panel of the embodiment of the present application includes the color conversion assembly, the display panel of the embodiment of the present application has the beneficial effects of the color conversion assembly, and the description will not be repeated here.

There are various arrangements of the display panel, and in some optional embodiments, the display panel further includes a driving back plate 700, and a plurality of light sources 600 arranged in an array are disposed on the driving back plate 700. , the light source 600 and the plurality of channels 411 of the color conversion film 400 are respectively arranged to correspond, and the light emitted from the light source 600 passes through the channel 411 or the color conversion unit within the channel 411. and is released.

A third embodiment of the present application also provides a display device including the display panel. Display devices of embodiments of the present application include devices with display functions, such as mobile phones, personal digital assistants (abbreviated as Personal Digital Assistants, PDAs), tablet computers, electronic paper books, televisions, access control doors, smart fixed phones, and consoles. However, it is not limited to this. Since the display device of the present application includes the display panel, the display device of this embodiment has the beneficial effects of the display panel, and the description will not be repeated here.

Referring to Figure 11, the present disclosure also provides a method of manufacturing a color conversion assembly, the manufacturing method including the following steps.

In step S01, a substrate 100 is provided, and a scattering layer 200 is formed on the substrate 100.

In step S02, a first planarization layer 810 is formed on the scattering layer 200, and a light collimation layer 300 is formed on the first planarization layer 810.

The light collimating layer 300 includes a plurality of light collimating units 300a, and the light collimating unit 300a performs angle limitation on the emitted light.

In step S03, a third planarization layer 830 is formed on the first planarization layer 810.

In order to ensure the flatness of the surface of the third planarization layer 830 that is far from the first planarization layer 810, the thickness of the third planarization layer 830 is determined by the stretching length according to the thickness direction of the light collimating unit 300a. It is not smaller than.

In step S04, the color conversion film 400 is formed on the third planarization 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 within at least some of the channels 411. The color conversion unit 420 and the light collimation unit 300a are arranged to correspond, and the light collimation unit 300a limits the light emitted from the color conversion unit 420.

There are a variety of methods for manufacturing the color conversion assembly, and in some alternative embodiments, the third planarization layer 830 is formed directly on the first planarization layer 810.

Alternatively, in some other optional embodiments, step S02 includes forming a first planarization layer 810 on the scattering layer 200 and forming a Bragg reflection layer 500 on the first planarization layer 810; , continuing to form a second planarization layer 820, and forming a light collimation layer 300 on the second planarization layer 820, wherein the first planarization of the second planarization layer 820 To ensure flatness of the surface distant from the layer 810, the thickness of the second planarization layer 820 is greater than the thickness of the Bragg reflection layer 500. At this time, the second planarization layer 820 is disposed between the first planarization layer 810 and the third planarization layer 830. Step S03 includes continuing to form a third planarization layer 830 on the second planarization layer 820, and step S04 includes forming a color conversion film 400 on the third planarization layer 830. Including forming steps.

Hereinafter, taking the color conversion assembly shown in FIG. 1 as an example, the molding process of the color conversion assembly will be briefly described with reference to FIGS. 12A to 12J. The process includes the following steps.

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

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

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

In the fourth step, as shown in FIG. 12D, the Bragg reflection layer 500 is formed on the first planarization layer 810.

Preferably, the Bragg reflective layer 500 can be placed only in areas where reflection is required. For example, when the light source 600 is a blue light source, the Bragg reflective layer 500 can be placed only for red and green sub-pixels.

In the fifth step, as shown in FIG. 12E, a second planarization layer 820 is formed on the Bragg reflection layer 500. The thickness of the second planarization layer 820 is not smaller than the thickness of the Bragg reflective layer 500.

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

The light collimating unit 300a of the light collimating layer 300 includes at least two blocking walls 310 arranged and stretched along the thickness direction of the color conversion assembly, and a light emission space ( 320) and an opening in communication with the light exit space 320 are formed so that the light passing through the color conversion unit 420 passes through the light exit space 320 and is emitted from the opening to the scattering layer 200.

In the seventh step, as shown in Figure 12g, the third planarization layer 830 is continuously formed on the second planarization layer 820, and the thickness of the third planarization layer 830 is equal to the optical collimation layer 300. ) is not smaller than the thickness of

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

In the ninth step, as shown in FIG. 12I, the color conversion unit 420 is formed in at least some of the channels 411 to form a color conversion assembly.

The process of forming a display panel using a color conversion assembly may also include the following steps.

In the tenth step, as shown in FIG. 12J, a driving backplate 700 is provided, and a plurality of light sources 600 are array-distributed on the driving backplate 700.

Finally, the driving back plate 700 with the light source 600 and the color conversion assembly are bonded together using a filler adhesive or the like to form a display panel. The arrangement method of the pre-fill adhesive varies. To ensure light transmission effect, the pre-fill adhesive is preferably a transparent heat-cured or UV-cured organic polymer, for example, polymethyl methacrylate, polysiloxane, polyimide, etc. am.

The present application may be implemented in other specific forms without departing from the spirit and essential characteristics of the invention. Accordingly, the present embodiments are to be regarded in all respects as illustrative and non-limiting, and the scope of the present application is limited by the claims rather than the foregoing description, and all changes falling within the meaning and equivalent of the claims are not permitted. All are included within the scope of this application.

Claims (20)

In the color conversion assembly,
With 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 and including a plurality of light collimating units;
A color conversion film including a light-shielding layer, a plurality of channels penetrating the light-shielding layer, and at least some color conversion units distributed within the channels,
Here, at least some of the light collimation units are arranged to correspond to the color conversion units,
Each of the light collimating units includes three or more blocking walls arranged to extend along the thickness direction of the color conversion assembly, and forms a light exit space between adjacent blocking walls and an opening communicating with the light exit space. and the light ray that has passed through the color conversion unit passes through the light emission space and is emitted from the aperture. According to paragraph 1,
The light emission space is surrounded by the at least two blocking walls, and the at least two blocking walls are surrounded corresponding to the color conversion unit to form one or more of the light emission spaces. According to paragraph 2,
An orthogonal projection of the at least two blocking walls on the substrate represents a stripe shape, and the at least two blocking walls include at least two first blocking walls distributed at intervals, and an outer periphery of the at least two first blocking walls. comprising a surrounding second barrier, or
Alternatively, the orthogonal projection of the at least two blocking walls on the substrate is in a grid shape, and the at least two blocking walls include at least two first blocking walls extending along a first direction, and at least two blocking walls extending along a second direction. comprising two second blocking walls, the at least two first blocking walls being distributed at intervals, the at least two second blocking walls being distributed at intervals, the first direction, the second direction and The thickness directions cross each other two by two,
Alternatively, the orthogonal projection of the at least two blocking walls on the substrate is surrounded and exhibits a honeycomb shape,
Alternatively, the at least two blocking walls are a plurality of pillars independent of each other, and the orthogonal projection of the blocking walls on the substrate is circular or polygonal,
Color conversion assembly. According to paragraph 1,
The stretched thickness of the barrier wall is 0.5 μm to 5 μm;
and/or, a color conversion assembly wherein the minimum spacing between two adjacent said barriers is 0.3 μm to 10 μm. According to paragraph 1,
The barrier is made of a light-absorbing material or a light-reflecting material,
Alternatively, a light-absorbing film or a light-reflecting film is applied to the outer surface of the blocking wall,
Or, the barrier wall contains scattering particles,
Alternatively, a color conversion assembly in which the light exit space is filled with a first material, the blocking wall is made of a second material, and the refractive index of the first material exceeds the refractive index of the second material. According to paragraph 1,
The scattering layer is provided with scattering particles,
and/or,
The scattering layer is a color conversion assembly including a plurality of scattering structures protruding from the substrate to the light collimating layer. According to paragraph 1,
A color conversion assembly further comprising a Bragg reflective layer disposed between the scattering layer and the color conversion film. In the display panel,
a driving backplate on which a plurality of light sources are arranged;
A display panel comprising: a color conversion assembly according to any one of claims 1 to 7, disposed to correspond to the driving back plate so that the plurality of channels and the plurality of light sources are respectively arranged to correspond to each other. In a method of manufacturing a color conversion assembly,
providing a substrate and forming a scattering layer on the substrate;
A first planarization layer is formed on the scattering layer, and a light collimation layer including a plurality of light collimation units is formed on the first planarization layer, wherein each light collimation unit is located in the thickness direction of the color conversion assembly. It includes three or more blocking walls stretched and disposed along, forming a light exit space and an opening in communication with the light exit space between adjacent blocking walls, and the light passing through the color conversion unit is transmitted to the light exit space. passing through and exiting from the opening;
forming a third planarization layer on the first planarization layer, wherein the thickness of the third planarization layer is not smaller than the stretching length of the light collimating unit along the thickness direction;
Forming a color conversion film on the third planarization layer, wherein the color conversion film includes a light-shielding layer, a plurality of channels passing through the light-shielding layer, and at least some color conversion units distributed within the channels. ;
A method of manufacturing a color conversion assembly comprising: delete delete delete delete delete delete delete delete delete delete delete