WO2021042539A1

WO2021042539A1 - Quantum dot display

Info

Publication number: WO2021042539A1
Application number: PCT/CN2019/117606
Authority: WO
Inventors: 周淼; 林旭林
Original assignee: Tcl华星光电技术有限公司
Priority date: 2019-09-03
Filing date: 2019-11-12
Publication date: 2021-03-11
Also published as: CN110703484A

Abstract

The present application discloses a quantum dot display. A light absorption axis of a first polarizer of the display forms a first angle with respect to vertically polarized light in incident light, so as to absorb the vertically polarized light, and a light absorption axis of a second polarizer of the display forms a second angle with respect to the vertically polarized light in the incident light, so as to absorb horizontally polarized light. In the application, micro-structures of the polarizers are adjusted such that the polarizers are controlled to absorb non-diffused polarized light and to transmit diffused polarized light, thus achieving blue-light diffusion.

Description

Quantum dot display

Technical field

This application relates to the field of display technology, and in particular to a quantum dot display with optimized viewing angles.

Background technique

With the rapid development of semiconductor technology and display technology, liquid crystal displays (Liquid Crystal Display, abbreviated as LCD) has been widely used. Most of the existing liquid crystal displays on the market are backlit liquid crystal displays, which include a back plate (BP), a liquid crystal display panel (Panel), and a back light unit (BLU). The liquid crystal display panel is usually composed of a color filter (CF) substrate, a thin film transistor (Thin Film Transistor, TFT for short) array substrate and a liquid crystal layer (Liquid Crystal Layer, referred to as LCL). A polarizer (Polarizer, POL for short) is attached to the side of the backplane away from the TFT array substrate. The liquid crystal display panel controls the rotation direction of the liquid crystal molecules by changing the signal and voltage on the TFT, so as to control whether the polarized light of each pixel point is emitted or not, and realizes the penetration and blocking of the light path through the polarizer to achieve the purpose of displaying the picture . The backlight module usually uses light-emitting diodes (Light Emitting Diode, abbreviated as LED) as the backlight source.

With the vigorous development of display technology, high color gamut has become an important development direction. High color gamut means that the display screen has more colorful colors and a stronger color display ability. For liquid crystal displays, since the display panel itself does not emit light, it is necessary to start with the backlight to improve the color gamut, that is, to improve the purity of the backlight, especially the purity of the three primary colors (red, green, and blue).

Quantum Dot-Open Cell (QD-OC) is an innovative semiconductor nanocrystal technology, which can accurately transmit light, efficiently improve the color gamut value and viewing angle of the display, make colors more pure and bright, and make color performance more tense . The core is that quantum dots with a diameter between 2-10 nanometers will excite different colors of monochromatic light when subjected to photoelectric stimulation according to the size of the quantum dot diameter. Therefore, compared with the original display technology, the quantum dot display The RGB primary colors will be more pure. For example, quantum dots with a size of 2nm can absorb long-wave red and show blue; quantum dots with a size of 8nm can absorb short-wave blue and show red. Liquid crystal displays using this technology can not only produce dynamic colors with a wider color gamut, but also show real color palettes in image quality, surpassing the traditional backlight technology.

technical problem

However, if the color is developed through quantum dots, since the current quantum dots are only responsible for generating green light and red light, the white light LED backlight source in the original backlight module must be replaced with a blue LED backlight source. The study found that due to the large red and green viewing angles of quantum dots, the combination of ordinary blue LED backlights with QD-OC will cause color shifts with large viewing angles.

Technical solutions

The purpose of this application is to provide a quantum dot display, which can increase the viewing angle of blue light and improve the problem of large viewing angle deviation of the quantum dot display.

To achieve the above objective, the present application provides a quantum dot display, including a display panel; the quantum dot display further includes: a first polarizer disposed above the display panel; and a second polarizer configured Under the display panel; a quantum dot film is arranged under the second polarizer; the absorption axis of the first polarizer forms a first angle with the vertical polarized light in an incident light to absorb perpendicular Polarized light; the absorption axis of the second polarizer is at a second angle with the vertical polarized light in the incident light to absorb horizontally polarized light, wherein the second angle is greater than the first angle, and the vertical The light diffusion effect of polarized light is greater than that of the horizontally polarized light; a plurality of diffusion particles are used to diffuse the incident light; and a reflective polarization brightness enhancement film is arranged on the quantum dot film and the Between the second polarizer.

In order to achieve the above objective, the present application further provides a quantum dot display, including a display panel; the quantum dot display further includes a first polarizer arranged in the back light emitting direction: a first polarizer arranged above the display panel; A second polarizer is arranged under the display panel; a quantum dot film is arranged under the second polarizer; the absorption axis of the first polarizer is in the form of a vertical polarized light in the incident light A first angle to absorb vertically polarized light; and the absorption axis of the second polarizer forms a second angle with the vertical polarized light in the incident light to absorb horizontally polarized light, wherein the second angle is greater than the At the first angle, the light diffusion effect of the vertically polarized light is greater than the light diffusion effect of the horizontally polarized light.

Beneficial effect

This application restricts the relationship between the absorption axis of the polarizer and the direction of polarized light, adjusts the microstructure of the polarizer, and controls the polarizer to absorb polarized light without diffusion effect, transmit polarized light with diffusion effect, and finally achieve diffusion The effect of blue light. Therefore, the quantum dot display of the present application can effectively increase the viewing angle of blue light, improve the common problem of large viewing angle deviation, and achieve the effects of high brightness, large viewing angle, and low color shift.

Description of the drawings

In order to more clearly describe the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings that need to be used in the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

1A is a schematic diagram of a simulation model of the second polarizer absorption axis setting and incident light diffusion of the quantum dot display of the present invention;

Figure 1B is a simulation model of horizontally polarized light diffusion;

Figure 1C is a simulation model of vertical polarized light diffusion;

2A is a schematic diagram of a partial film structure of the first embodiment of the quantum dot display of the present invention;

2B is a schematic diagram of a part of the film structure of the second embodiment of the quantum dot display of the present invention;

2C is a schematic diagram of a part of the film structure of the third embodiment of the quantum dot display of the present invention;

3A is a schematic diagram of a part of the film structure of the fourth embodiment of the quantum dot display of the present invention;

3B is a schematic diagram of a part of the film structure of the fifth embodiment of the quantum dot display of the present invention;

3C is a schematic diagram of a part of the film structure of the sixth embodiment of the quantum dot display of the present invention.

Embodiments of the present invention

The embodiments of the present application are described in detail below. Examples of the embodiments are shown in the accompanying drawings, in which the same or similar reference numerals indicate the same or similar elements or elements with the same or similar functions. The following embodiments described with reference to the drawings are exemplary, and are only used to explain the present application, and should not be understood as a limitation to the present application.

The terms "first", "second", "third", etc. (if any) in the description and claims of this application and the drawings are used to distinguish similar objects, and not necessarily used to describe a specific order or sequence. . It should be understood that the objects described in this way can be interchanged under appropriate circumstances. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

In this application, unless expressly stipulated and defined otherwise, the “above” or “below” of the first feature on the second feature may include the first and second features in direct contact, or may include the first and second features. Not in direct contact but through other features between them. Moreover, "above", "above" and "above" the first feature include the first feature directly above and obliquely above the second feature, or it simply means that the first feature is higher in level than the second feature. The first feature is "below", "below" and "below" the second feature, including the first feature directly below and obliquely below the second feature, or it simply means that the first feature has a lower level than the second feature.

The following disclosure provides many different embodiments or examples for realizing different structures of the present application. In order to simplify the disclosure of the present application, the components and settings of specific examples are described below. Of course, they are only examples, and are not intended to limit the application. This application may repeat reference numerals and/or reference letters in different examples. Such repetition is for the purpose of simplification and clarity, and does not indicate the relationship between the various embodiments and/or settings discussed. In addition, this application provides examples of various specific processes and materials, but those of ordinary skill in the art may be aware of the application of other processes and/or the use of other materials.

This application uses the different diffusion effects of the Rayleigh scattering model on the polarized light, and applies the polarized light with the diffusion effect to the quantum dot display to improve the large-view role deviation and enhance the visual taste. The quantum dot display of the present application includes a display panel; the quantum dot display also includes a first polarizer disposed above the display panel; the quantum dot display further includes a first polarizer disposed above the display panel; and a second polarizer disposed on the Below the display panel; a quantum dot film arranged below the second polarizer; the absorption axis of the first polarizer forms a first angle with the vertical polarized light in the incident light, so as to absorb the vertical polarized light; The absorption axis of the second polarizer forms a second angle with the vertically polarized light in the incident light to absorb horizontally polarized light, wherein the second angle is greater than the first angle, and the vertically polarized light diffuses The effect is greater than the light diffusion effect of the horizontally polarized light. Among them, the direction of the absorption axis is the polarization angle of the polarizer. The light at the position parallel to the absorption axis will be absorbed by the polarizer, and the light at the vertical position of the absorption axis can pass through. Preferably, the first angle is 0 degrees, and the second angle is 90 degrees. This application restricts the relationship between the absorption axis of the polarizer and the direction of polarized light, adjusts the microstructure of the polarizer, and controls the polarizer to absorb polarized light without diffusion effect, transmit polarized light with diffusion effect, and finally achieve diffusion The effect of blue light. Therefore, the quantum dot display of the present application can effectively increase the viewing angle of blue light, improve the common problem of large viewing angle deviation, and achieve the effects of high brightness, large viewing angle, and low color shift.

The display panel may include an array substrate, and a color filter substrate disposed above the array substrate; the first polarizer is disposed above the color filter substrate, and the second polarizer is disposed below the array substrate ; By limiting the polarization direction of the polarizer on the array substrate side to 90 degrees (that is, the absorption axis of the second polarizer is parallel to the horizontally polarized light), the polarization direction of the polarizer on the color film substrate side is limited to 0 degrees (that is, the first The absorption axis of a polarizer is parallel to the vertical polarized light), which can effectively improve the brightness of the polarizer of the quantum dot display, effectively increase the viewing angle of blue light, and improve the problem of large-view role deviation.

The quantum dot film includes a light-emitting core, an inorganic protective shell layer and an organic layer. The green light material in the light-emitting core includes _{one or more combinations of ZnCdSe 2} , InP, and Cd ₂ SSe; the red light material in the light-emitting core includes one or more combinations of _{CdSe, Cd 2 SeTe, and InAs;} The inorganic protective shell layer material includes _{one or more combinations of CdS, ZnSe, ZnCdS 2} , ZnS, and ZnO; the organic layer adopts a transparent resin material. The quantum dot film may also include other high-stability composite quantum dots (for example, hydrogel loaded QD structure, QD@MOFs, CdSe-SiO _2, etc.). The quantum dot film may comprise II-VI _A further quantum dots nanorods fluorescence polarization properties, III-V _A quantum dot nanorods, Dot-in-rod core-shell quantum dot structure nanorods, dual emission quantum dot material, Three-emitting quantum dot materials, as well as perovskite quantum dots, etc.

Preferably, the quantum dot display of the present application further includes: a plurality of diffusion particles for diffusing incident light. The brightness of the quantum dot display can be effectively improved by adjusting the microstructure of the polarizer, and the light diffusion function can be improved by diffusing particles. The diffusion particles can be mixed in the film layer of the quantum dot film, or can be placed in a resin system outside the quantum dot film to improve the light diffusion function. The high-efficiency quantum dot display combined with the light expansion design can make the quantum dot display achieve better effects of high brightness, large viewing angle, and low color shift. The material of the diffusion particles is an organic material or an inorganic material, the size of the diffusion particles is nanometer or micrometer, and the diffusion particles can be isotropic or anisotropic.

More preferably, the quantum dot display of the present application can be further equipped with a reflective polarizing brightness enhancement film (Dual Brightness Enhancement Film, DBEF for short). DBEF converts part of the horizontally polarized light into vertically polarized light, which further improves the transmittance of the polarizer while maintaining the diffusion effect. The high-efficiency quantum dot display combined with the light expansion and brightness enhancement film design can make the quantum dot display achieve better effects of high brightness, large viewing angle, and low color shift.

Please refer to Figures 1A-1C, in which Figure 1A is a schematic diagram of the second polarizer absorption axis setting and incident light diffusion simulation model of the quantum dot display of the application, Figure 1B is the horizontally polarized light diffusion simulation model, and Figure 1C is the vertically polarized light diffusion simulation model model. This embodiment illustrates the second polarizer 12 of the quantum dot display, and the quantum dot display further includes diffusion particles 13.

This application utilizes the different diffusion effects of the Rayleigh scattering model on the polarized light, and applies the polarized light with the diffusion effect to the quantum dot display to improve the large-view role deviation and enhance the visual taste. Specifically, incident light (natural light) can be divided into horizontal (observation angle of 0 degrees) and vertical (observation angle of 90 degrees) polarized light, with horizontally polarized light 111 as the x axis, and vertical polarized light 112 as The z-axis, with the light wave's advancing direction 113 as the y-axis, defines a spatial rectangular coordinate system, as shown in Fig. 1A. The relationship between the scattered light intensity i _x and the observation angle θ is: i _x =((α ² ^· π ² ^· E ² )/(λ ² ^· r ² )) ^· sin ² θ; where α is the direction of the scattered light, E Scattered light energy, λ is the wavelength of incident light, and r is the radius of the diffused particle.

The polarization effects of the diffuser particles 13 on the two types of polarized light are quite different: the horizontally polarized light 111 has almost no diffuse effect after passing through the diffuser particle 13, that is, the horizontally polarized light 111 passes through the diffuser particle 13. The light diffusion intensity of the zx plane is close to 0, as shown in FIG. 1B; the vertically polarized light 112 passes through the diffusion particles 13 and the diffused light is spherical, which has a good light diffusion effect, as shown in FIG. 1C. That is, the light diffusion effect of the vertically polarized light 112 is greater than the light diffusion effect of the horizontally polarized light 111. By restricting the relationship between the absorption axis of the polarizer and the polarization direction, the polarizer only absorbs polarized light without diffusion effect, and transmits polarized light with diffusion effect, and finally achieves the effect of diffusing blue light.

1A, this embodiment illustrates the second polarizer 12 of the quantum dot display, the absorption axis of which is 90 degrees to the vertical polarized light 112 in the incident light (that is, the absorption axis is parallel to the horizontally polarized light 111). In order to absorb the horizontally polarized light 111 and pass through the vertically polarized light 112; the vertically polarized light 112 with better diffusion effect can pass through the second polarizer 12, therefore, the incident light passes through the The diffusion effect behind the second polarizer 12 can be reflected. Correspondingly, in the first polarizer (not shown in the figure) of the quantum dot display of this embodiment, its absorption axis is 0 degrees with respect to the vertical polarized light 112 in the incident light (that is, the absorption axis and the vertical polarized light 112 parallel) to absorb the vertically polarized light 112 and transmit the horizontally polarized light 111; the vertically polarized light 112 with better diffusion effect is absorbed, so the incident light passes through the first polarizer There is no polarization effect afterwards. That is, by limiting the relationship between the absorption axis of the polarizer and the polarization direction, the microstructure of the polarizer is adjusted, and the polarizer is controlled to absorb polarized light without diffusion effect and transmit polarized light with diffusion effect, and finally achieve The effect of diffusing blue light. Therefore, the quantum dot display of the present application can effectively increase the viewing angle of blue light, improve the common problem of large viewing angle deviation, and realize a quantum dot display with high brightness, large viewing angle, and low color shift.

Please refer to FIGS. 2A-2C, in which FIG. 2A is a schematic diagram of a part of the film structure of the first embodiment of a quantum dot display of this application, and FIG. 2B is a schematic diagram of a part of the film structure of the second embodiment of a quantum dot display of this application, and FIG. 2C This is a schematic diagram of a part of the film structure of the third embodiment of the quantum dot display of the present application.

As shown in FIG. 2A, a part of the film structure of the quantum dot display in this embodiment includes a water-proof oxygen layer (Barrier Layer) 21a, a quantum dot film 22a, a second polarizer 23a, a display panel 27a, and a first polarizer 28a. The water-blocking oxygen layer 21a is disposed below the quantum dot film 22a, the second polarizer 23a is disposed above the quantum dot film 22a, and a plurality of diffusing particles 20a for diffusing incident light are disposed thereon. The quantum dot film 22a. That is, the diffusion particles 20a are mixed in the film layer of the quantum dot film 22a to improve the light diffusion function. A protective layer 24a may also be disposed between the second polarizer 23a and the quantum dot film 22a.

Further, the display panel 27a is disposed above the second polarizer 23a, and the first polarizer 28a is disposed above the display panel 27a. Specifically, an array substrate of the display panel 27a is provided on the second polarizer 23a, a color filter substrate is provided on the side of the display panel 27a opposite to the array substrate, and the color filter substrate is provided with Regarding the first polarizer 28a, the arrangement and working principle of these film structures can be referred to the prior art, which will not be repeated here. However, unlike the prior art, the absorption axis of the second polarizer 23a of this embodiment forms a second angle with the vertical polarized light in an incident light to absorb horizontally polarized light; the first polarized light of this embodiment The absorption axis of the sheet is at a first angle with the vertically polarized light in the incident light to absorb the vertically polarized light. Therefore, the quantum dot display of the present application can effectively increase the viewing angle of blue light, improve the common problem of large viewing angle deviation, and achieve the effects of high brightness, large viewing angle, and low color shift.

As shown in FIG. 2B, the difference from the embodiment shown in FIG. 2A is that a part of the film structure of the quantum dot display in this embodiment includes a water-blocking oxygen layer 21b, a quantum dot film, which are sequentially arranged along the light emitting direction. 22b, a diffusion layer 29b, and a second polarizer 23b. The water and oxygen blocking layer 21b is disposed below the quantum dot film 22b, the diffusion layer 29b is disposed above the quantum dot film 22b, and the second polarizer 23b is disposed above the diffusion layer 29b for A plurality of diffusion particles 20b that diffuse incident light are arranged in the diffusion layer 29b. That is, the diffusion particles 20b are placed in the resin system outside the quantum dot film 22b to improve the light diffusion function. A protective layer 24b may also be disposed between the second polarizer 23b and the quantum dot film 22b.

As shown in FIG. 2C, the difference from the embodiment shown in FIG. 2A is that part of the film structure of the quantum dot display in this embodiment includes a diffusion layer 29c, a quantum dot film 22c and A second polarizer 23c. The diffusion layer 29c is arranged below the quantum dot film 22c, the second polarizer 23c is arranged above the quantum dot film 22c, and a plurality of diffusion particles 20c for diffusing incident light are arranged on the diffuser In layer 29c. That is, the diffusion particles 20c are placed in the resin system outside the quantum dot film 22c to improve the light diffusion function; at the same time, the diffusion layer 29c disposed under the quantum dot film 22c also replaces water and oxygen. Layer to protect the quantum dot film 22c. A protective layer 24c may also be disposed between the second polarizer 23c and the quantum dot film 22c.

Please refer to FIGS. 3A-3C, in which FIG. 3A is a schematic diagram of a partial film structure of the fourth embodiment of a quantum dot display of the present application, and FIG. 3B is a schematic diagram of a partial film structure of the fifth embodiment of a quantum dot display of the present application, and FIG. 3C This is a schematic diagram of a part of the film structure of the sixth embodiment of the quantum dot display of the present application.

As shown in FIG. 3A, the difference from the embodiment shown in FIG. 2A is that the film structure of the quantum dot display in this embodiment further includes: disposed between the quantum dot film 22a and the second polarizer 23a Between a reflective polarizing brightness enhancement film 31a. The reflective polarizing brightness enhancement film 31a can convert part of the horizontally polarized light into vertically polarized light, which further improves the transmittance of the polarizer while maintaining the diffusion effect.

As shown in FIG. 3B, the difference from the embodiment shown in FIG. 2B is that the film structure of the quantum dot display in this embodiment further includes: being arranged between the diffusion layer 29b and the second polarizer 23b A reflective polarizing brightness enhancement film 31b. The reflective polarizing brightness enhancement film 31b can convert part of the horizontally polarized light into vertically polarized light, which further improves the transmittance of the polarizer while maintaining the diffusion effect.

As shown in FIG. 3C, the difference from the embodiment shown in FIG. 2C is that the film structure of the quantum dot display in this embodiment further includes: disposed between the quantum dot film 22c and the second polarizer 23c Between a reflective polarizing brightness enhancement film 31c. The reflective polarizing brightness enhancement film 31c can convert part of the horizontally polarized light into vertically polarized light, which further improves the transmittance of the polarizer while maintaining the diffusion effect.

Industrial applicability

The subject of this application can be manufactured and used in industry and has industrial applicability.

Claims

A quantum dot display includes a display panel; wherein, the quantum dot display further includes: a first polarizer arranged above the display panel; and a second polarizer arranged below the display panel A quantum dot film, disposed under the second polarizer; the absorption axis of the first polarizer and a vertical polarized light in an incident light at a first angle, so as to absorb vertically polarized light; the second The absorption axis of the polarizer forms a second angle with the vertically polarized light in the incident light to absorb horizontally polarized light, and wherein the second angle is greater than the first angle, and the light diffusion effect of the vertically polarized light Greater than the light diffusion effect of the horizontally polarized light; a plurality of diffusion particles for diffusing the incident light; and a reflective polarizing brightness enhancement film disposed between the quantum dot film and the second polarizer between.
The quantum dot display of claim 1, wherein the first angle is 0 degrees, and the second angle is 90 degrees.
8. The quantum dot display of claim 1, wherein the plurality of diffusion particles are arranged in the quantum dot film, and a water and oxygen blocking layer is disposed under the quantum dot film.
The quantum dot display of claim 1, wherein the plurality of diffusion particles are arranged in a diffusion layer; the diffusion layer is arranged above the quantum dot film, and a water-blocking oxygen is arranged below the quantum dot film. Layer; or the diffusion layer is disposed under the quantum dot film.
The quantum dot display of claim 4, wherein when the diffusion layer is provided above the quantum dot film, the reflective polarization brightness enhancement film is provided above the diffusion layer; when the diffusion layer is provided When under the quantum dot film, the reflective polarizing brightness enhancement film is arranged above the quantum dot film.
The quantum dot display of claim 1, wherein the material of the diffusion particles is an organic material or an inorganic material, and the size of the diffusion particles is nanometer or micrometer.
8. The quantum dot display of claim 1, wherein the quantum dot film includes a light-emitting core, an inorganic protective shell layer, and an organic layer.
The quantum dot display of claim 7, wherein the green light material in the light-emitting core includes one or more combinations of ZnCdSe 2 , InP, and Cd 2 SSe; the red light material in the light-emitting core includes CdSe, Cd 2 One or more combinations of SeTe and InAs; the inorganic protective shell material includes one or more combinations of CdS, ZnSe, ZnCdS 2 , ZnS, and ZnO; the organic layer is made of transparent resin materials.
A quantum dot display includes a display panel; wherein, the quantum dot display further includes: a first polarizer arranged above the display panel; and a second polarizer arranged below the display panel A quantum dot film disposed under the second polarizer; the absorption axis of the first polarizer is at a first angle with the vertical polarized light in an incident light to absorb the vertical polarized light; and the first polarizer The absorption axis of the two polarizers forms a second angle with the vertically polarized light in the incident light to absorb horizontally polarized light, and wherein the second angle is greater than the first angle, and the vertically polarized light diffuses The effect is greater than the light diffusion effect of the horizontally polarized light.
9. The quantum dot display of claim 9, wherein the first angle is 0 degrees and the second angle is 90 degrees.
9. The quantum dot display of claim 9, wherein the quantum dot display further comprises: a plurality of diffusion particles for diffusing the incident light.
11. The quantum dot display of claim 11, wherein the plurality of diffusion particles are arranged in the quantum dot film, and a water and oxygen blocking layer is disposed under the quantum dot film.
The quantum dot display of claim 11, wherein the plurality of diffusion particles are arranged in a diffusion layer, the diffusion layer is arranged above the quantum dot film, and a water-blocking oxygen is arranged below the quantum dot film. Floor.
15. The quantum dot display of claim 13, wherein the quantum dot display further comprises: a reflective polarizing brightness enhancement film disposed above the diffusion layer.
11. The quantum dot display of claim 11, wherein the plurality of diffusion particles are arranged in a diffusion layer, and the diffusion layer is disposed under the quantum dot film.
15. The quantum dot display of claim 15, wherein the quantum dot display further comprises: a reflective polarizing brightness enhancement film disposed above the quantum dot film.
9. The quantum dot display of claim 9, wherein the quantum dot display further comprises: a reflective polarizing brightness enhancement film disposed between the quantum dot film and the second polarizer.
11. The quantum dot display of claim 11, wherein the diffusion particle material is an organic material or an inorganic material, and the size of the diffusion particle is nanometer or micrometer.
9. The quantum dot display of claim 9, wherein the quantum dot film includes a light-emitting core, an inorganic protective shell layer, and an organic layer.
The quantum dot display according to claim 17, wherein the green light material in the light-emitting core includes one or more combinations of ZnCdSe 2 , InP, and Cd 2 SSe; the red light material in the light-emitting core includes CdSe, Cd 2 One or more combinations of SeTe and InAs; the inorganic protective shell material includes one or more combinations of CdS, ZnSe, ZnCdS 2 , ZnS, and ZnO; the organic layer is made of transparent resin materials.