Display devices and electronic devices

Abstract

This application provides a display device and an electronic device, relating to the field of optoelectronic technology. The display device includes a substrate, a light-emitting device located on the substrate, and a color filter layer. The light-emitting device includes multiple light-emitting layers arranged in an array, among which at least one is a blue light-emitting layer. The color filter layer includes multiple color filters arranged in an array, each color filter having the same color as one of the light-emitting layers, and the orthographic projection of the color filter onto the substrate at least partially overlaps with the orthographic projection of the light-emitting layer of the same color onto the substrate. The color filter whose orthographic projection onto the substrate at least partially overlaps with the orthographic projection of the blue light-emitting layer onto the substrate is the blue color filter. The blue color filter is made of organic and inorganic materials that transmit blue wavelengths. The inorganic material has a bandgap range of 2.72 eV to 3.06 eV and is used to absorb blue light emitted by the blue light-emitting layer with a center wavelength range of 400 nm to 455 nm. Thus, the display device can absorb blue light in the 400 nm to 455 nm range, thereby reducing the emission of harmful blue light.

Description

Technical Field

[0001] This application relates to the field of optoelectronic technology, and more particularly to a display device and an electronic device. Background Technology

[0002] With the development of technology, organic light-emitting diode (OLED) display devices are being researched and applied more and more widely. Currently, the blue light emitted by the blue light-emitting units in OLED display devices is mainly distributed in the 430nm to 520nm wavelength range. Within this range, short-wavelength, high-energy blue light in the 430nm to 450nm range can directly enter the human eye, causing irreversible damage to the physiological structure of the eye. This portion of blue light is known as harmful blue light.

[0003] However, current OLED display devices and their various film layers cannot effectively absorb harmful blue light, resulting in a transmittance that is usually greater than 90%, causing damage to the human eye and a poor user experience.

[0004] Therefore, there is an urgent need to provide an OLED display device to solve the above problems. Summary of the Invention

[0005] This application provides a display device and an electronic device. In the display device, a blue color filter is disposed on the light-emitting side of the blue light-emitting layer. The blue color filter contains quantum dots and / or perovskites added to an organic material that transmits blue wavelengths. The added quantum dots and / or perovskites have small particle sizes, which can fully absorb blue light. At the same time, the core-shell structured semiconductor nanocrystal material can absorb blue light with a center wavelength range of 400nm to 455nm and convert harmful blue light in this blue light into beneficial blue light, thereby reducing the harm of harmful blue light to the human eye and providing a better user experience.

[0006] To achieve the above objectives, the embodiments of this application adopt the following technical solutions:

[0007] In a first aspect, a display device is provided, comprising: a substrate, and a light-emitting device and a color filter layer disposed on the substrate, the color filter layer being disposed on the light-emitting side of the light-emitting device, the light-emitting device comprising a plurality of light-emitting layers arranged in an array, the plurality of light-emitting layers having at least one blue light-emitting layer; the color filter layer comprising a plurality of color filters arranged in an array, each color filter having the same color as a light-emitting layer, and the orthographic projection of the color filter on the substrate at least partially overlapping the orthographic projection of the light-emitting layer on the substrate, wherein the color filter whose orthographic projection on the substrate partially overlaps with the orthographic projection of the blue light-emitting layer on the substrate is a blue color filter, the material of the blue color filter comprising organic materials and inorganic materials that transmit blue wavelengths, the bandgap Eg of the inorganic material being in the range of 2.72eV to 3.06eV, and being used to absorb blue light emitted by the blue light-emitting layer with a center wavelength range of 400nm to 455nm.

[0008] This application provides a light-emitting device in which organic and inorganic materials that transmit blue wavelengths are disposed in a blue color filter. The inorganic material is a semiconductor nanomaterial with a band gap Eg ranging from 2.72 eV to 3.06 eV, which can absorb high-energy light with a band gap greater than its Eg. When light shines on the inorganic material, valence band (VB) electrons are excited to the conduction band (CB), and then the electrons return to the valence band (VB), emitting light with a longer wavelength, i.e., a redshift of the emission wavelength. This allows the absorption of blue light with a center wavelength range of 400 nm to 455 nm emitted by the blue light-emitting layer, achieving a healthy display of OLED screens that reduces harmful blue light, without the need for additional processes, making it simple and easy to implement.

[0009] In one possible implementation of the first aspect, the multiple light-emitting layers include a red light-emitting layer, a green light-emitting layer, and a blue light-emitting layer, and the multiple color filters include a red color filter, a green color filter, and a blue color filter, wherein no inorganic materials are provided in the material of the red color filter or the material of the green color filter.

[0010] In this implementation, inorganic materials are placed only in the blue color filter. These inorganic materials are semiconductor nanomaterials with a bandgap Eg ranging from 2.72 eV to 3.06 eV. They can absorb high-energy light with a bandgap greater than Eg. When light shines on the inorganic material, valence band (VB) electrons are excited to the conduction band (CB), and then the electrons return to the valence band (VB), emitting light with a longer wavelength, i.e., a redshift in the emission wavelength. This allows the absorption of blue light with a center wavelength range of 400 nm to 455 nm emitted by the blue light-emitting layer. This achieves a healthy OLED display that reduces harmful blue light without requiring additional processes and saving costs, making it a valuable application.

[0011] In one possible implementation of the first aspect, the orthographic projection of the blue emitting layer on the substrate lies within the orthographic projection of the blue color filter on the substrate and the orthographic projection of the emitting layer on the substrate.

[0012] In this implementation, by placing the blue color filter on the light-emitting side of the blue light-emitting layer, and ensuring that the area of ​​the blue color filter is larger than that of the blue light-emitting layer, it is possible to ensure that the quantum dots in the blue color filter effectively absorb harmful blue light with a center wavelength range of 400nm to 455nm. This allows the harmful blue light in the 400nm to 455nm range to be converted into beneficial blue light, which reduces the harm of harmful blue light to people and avoids the loss of harmful blue light, thus helping to reduce the power consumption of the display device.

[0013] In one possible implementation of the first aspect, along the OX direction, the first boundary of the orthogonal projection of the blue color filter onto the substrate exceeds the first boundary of the orthogonal projection of the blue emitting layer onto the substrate by a value d1 greater than or equal to 1 μm, and the second boundary of the orthogonal projection of the blue color filter onto the substrate exceeds the second boundary of the orthogonal projection of the blue emitting layer onto the substrate by a value d2 greater than or equal to 1 μm.

[0014] In this implementation, by placing the blue color filter on the light-emitting side of the blue emitting layer, and ensuring that the area of ​​the blue color filter is larger than that of the blue emitting layer, it is possible to ensure that the quantum dots in the blue color filter effectively absorb harmful blue light with a center wavelength range of 400nm to 455nm. This allows the harmful blue light in the 400nm to 455nm range to be converted into beneficial blue light, reducing the harm of harmful blue light to people while avoiding the loss of harmful blue light. This also helps to reduce the power consumption of the display device. Furthermore, the two sides of the orthographic projection of the blue color filter onto the substrate can be the same or different from the two sides of the orthographic projection of the blue emitting layer onto the substrate, thus providing display devices with various structures.

[0015] In one possible implementation of the first aspect, the first boundary of the orthogonal projection of the blue color filter onto the substrate exceeds the first boundary of the orthogonal projection of the blue emitting layer onto the substrate by a value d1, which may be the same as or different from the second boundary of the orthogonal projection of the blue color filter onto the substrate exceeding the second boundary of the orthogonal projection of the blue emitting layer onto the substrate by a value d2.

[0016] In this implementation, by placing the blue color filter on the light-emitting side of the blue emitting layer, and ensuring that the area of ​​the blue color filter is larger than that of the blue emitting layer, it is possible to ensure that the quantum dots in the blue color filter effectively absorb harmful blue light with a center wavelength range of 400nm to 455nm. This allows the harmful blue light in the 400nm to 455nm range to be converted into beneficial blue light, reducing the harm of harmful blue light to people while avoiding the loss of harmful blue light. This also helps to reduce the power consumption of the display device. Furthermore, the two sides of the orthographic projection of the blue color filter onto the substrate can be the same or different from the two sides of the orthographic projection of the blue emitting layer onto the substrate, thus providing display devices with various structures.

[0017] In one possible implementation of the first aspect, the first boundary of the orthogonal projection of the blue color filter on the substrate extends beyond the first boundary of the orthogonal projection of the blue emitting layer on the substrate by a value d1 ranging from 1.5 μm to 3.5 μm; the second boundary of the orthogonal projection of the blue color filter on the substrate extends beyond the second boundary of the orthogonal projection of the blue emitting layer on the substrate by a value d2 ranging from 1.5 μm to 3.5 μm.

[0018] In this implementation, by placing the blue color filter on the light-emitting side of the blue emitting layer, and ensuring that the area of ​​the blue color filter is larger than that of the blue emitting layer, it is possible to ensure that the quantum dots in the blue color filter effectively absorb harmful blue light with a center wavelength range of 400nm to 455nm. This allows the harmful blue light in the 400nm to 455nm range to be converted into beneficial blue light, reducing the harm of harmful blue light to people while avoiding the loss of harmful blue light. This also helps to reduce the power consumption of the display device. Furthermore, the two sides of the orthographic projection of the blue color filter onto the substrate exceed the two sides of the orthographic projection of the blue emitting layer onto the substrate by 1.5μm to 3.5μm, enabling the realization of display devices with various structures.

[0019] In one possible implementation of the first aspect, the inorganic material may include quantum dots and / or perovskites, wherein the quantum dots may be core-shell structured quantum dot particles.

[0020] In this implementation, organic materials and quantum dots and / or perovskites that transmit blue wavelengths are incorporated into the blue color filter. These quantum dots and / or perovskites are semiconductor nanomaterials, and their band gaps (Eg) range from 2.72 eV to 3.06 eV, allowing them to absorb high-energy light with band gaps exceeding their Eg. When light irradiates the inorganic material, valence band (VB) electrons are excited to the conduction band (CB), and then the electrons return to the valence band (VB), emitting longer wavelength light, i.e., a redshift in the emission wavelength. This allows the absorption of blue light with a center wavelength range of 400 nm to 455 nm emitted by the blue light-emitting layer, achieving a healthy OLED display that reduces harmful blue light. This is simple and easy to implement without requiring additional processes.

[0021] In one possible implementation of the first aspect, the quantum dots that absorb blue light are semiconductor nanocrystal particles, including at least one of silicon (Si) nanocrystals, II-VI compound nanocrystals, III-V compound nanocrystals, III-VI compound nanocrystals, IV-VI compound nanocrystals, I-III-VI compound nanocrystals, II-IV-VI compound nanocrystals, and IV elemental nanocrystals.

[0022] In this implementation, organic materials and semiconductor nanocrystal particles that transmit blue wavelengths are incorporated into the blue color filter. The band gap Eg of the semiconductor nanocrystal particles ranges from 2.72 eV to 3.06 eV, allowing them to absorb high-energy light with a band gap greater than Eg. When light irradiates the inorganic material, valence band (VB) electrons are excited to the conduction band (CB), and then the electrons return to the valence band (VB), emitting light with a longer wavelength, i.e., a redshift in the emission wavelength. This allows the absorption of blue light with a center wavelength range of 400 nm to 455 nm emitted by the blue light-emitting layer, achieving a healthy OLED display that reduces harmful blue light. This is simple and easy to implement without requiring additional processes.

[0023] In one possible implementation of the first aspect, the semiconductor nanocrystal particle having a core-shell structure includes a core layer and a shell layer, wherein the shell layer covers the core layer; wherein the core layer includes any one of cadmium selenide (CdSe), cadmium telluride (CdTe), cadmium sulfide (CdS), and indium phosphide (InP), and the shell layer includes zinc sulfide (ZnS).

[0024] In this implementation, organic materials that transmit blue wavelengths and core-shell semiconductor nanocrystal particles are disposed in the blue color film. The band gap Eg of the core-shell semiconductor nanocrystal particles ranges from 2.72eV to 3.06eV, which can absorb high-energy light with a band gap greater than its Eg. When light shines on the inorganic material, valence band (VB) electrons are excited to the conduction band (CB), and then the electrons return to the valence band (VB), emitting light with a longer wavelength, i.e., a redshift of the emission wavelength. This allows the blue light emitted by the blue light-emitting layer, with a center wavelength range of 400nm to 455nm, to be absorbed, thus achieving a healthy OLED screen display that reduces harmful blue light. This is simple and easy to implement without the need for additional processes.

[0025] In one possible implementation of the first aspect, the quantum dot material may include spherical quantum dot material, plate-shaped quantum dot material, rod-shaped quantum dot material, or other quantum dot materials of any arbitrary shape.

[0026] In this implementation, organic materials that transmit blue wavelengths and various quantum dots of different shapes are incorporated into the blue color film. The band gaps (Eg) of these quantum dots range from 2.72 eV to 3.06 eV, allowing them to absorb high-energy light with band gaps exceeding their Eg. When this light shines on the inorganic material, valence band (VB) electrons are excited to the conduction band (CB), and then the electrons return to the valence band (VB), emitting longer wavelength light—a redshift. This allows the absorption of blue light with a center wavelength range of 400 nm to 455 nm emitted by the blue light-emitting layer, achieving a healthy OLED display that reduces harmful blue light. This is simple and easy to implement without requiring additional processing steps.

[0027] In one possible implementation of the first aspect, the perovskite absorbing blue light is an inorganic perovskite with the general structural formula AMX3; where A represents a cesium ion. ( Cs + ) M represents a divalent metal cation, including lead ions (Pb). 2+ Tin ions (Sn) 2+ Copper ions (Cu) 2+ Nickel ions (Ni) 2+ ), cadmium ions (Cd) 2+ ), chromium ions (Cr 2+ ), manganese ions (Mn) 2+ ), cobalt ions (Co) 2 + ), iron ions (Fe) 2+ germanium ions (Ge) 2+ ), ytterbium ions (Yb 2+ europium ions (Eu) 2+ Any one of the following; X is a halide anion, including chloride ions (Cl... - ), bromide ions (Br) - ) and iodide ions (I - Any one of them.

[0028] In this implementation, organic materials and inorganic perovskite that transmit blue wavelengths are incorporated into the blue color filter. The inorganic perovskite has a bandgap Eg range of 2.72 eV to 3.06 eV, which can absorb high-energy light with a bandgap greater than its Eg. When light shines on the inorganic material, valence band (VB) electrons are excited to the conduction band (CB), and then the electrons return to the valence band (VB), emitting light with a longer wavelength, i.e., a redshift in the emission wavelength. This allows the absorption of blue light with a center wavelength range of 400 nm to 455 nm emitted by the blue light-emitting layer, achieving a healthy OLED display that reduces harmful blue light. This is simple and easy to implement without requiring additional processes.

[0029] In one possible implementation of the first aspect, the perovskite absorbing blue light is an inorganic-organic hybrid perovskite with the general structural formula BMX3; wherein B is an organic amine cation, including NH3(CH2). n NH3 2+ M is a divalent metal cation, including Pb. 2+ Sn 2+ Cu 2+ Ni 2+ Cd 2+ Cr 2+ Mn 2+ Co 2+ Fe 2+ 、Ge 2+ Yb 2+ Eu 2+ Any of the following; X is a halide anion, including Cl... - ,Br - and I - Any one of them.

[0030] In this implementation, an organic material and an inorganic-organic hybrid perovskite that transmit blue wavelengths are incorporated into the blue color filter. The band gap (Eg) of this inorganic-organic hybrid perovskite ranges from 2.72 eV to 3.06 eV, allowing it to absorb high-energy light with a band gap greater than its Eg. When light irradiates the inorganic material, valence band (VB) electrons are excited to the conduction band (CB), and then the electrons return to the valence band (VB), emitting longer wavelength light, i.e., a redshift in the emission wavelength. This allows the absorption of blue light with a center wavelength range of 400 nm to 455 nm emitted by the blue light-emitting layer, achieving a healthy OLED display that reduces harmful blue light. This is simple and easy to implement without requiring additional processes.

[0031] In one possible implementation of the first aspect, the particle size range of the inorganic material includes 1.5 nm to 10 nm.

[0032] In this implementation, inorganic materials are added to the organic materials that transmit blue wavelengths in the current blue color filter. The particle size of the added inorganic materials is distributed between 1.5 nm and 10 nm. The small particle size of the inorganic materials allows for sufficient absorption of blue light. At the same time, the inorganic materials are semiconductor nanocrystal materials with a core-shell structure. As the particle size changes, they have different band structures. The smaller the particle size, the blue shift in the emission spectrum. Thus, the inorganic materials can absorb high-energy light with a band gap greater than its width Eg. When light shines on the inorganic materials, valence band (VB) electrons are excited to the conduction band (CB), and then the electrons return to the valence band (VB), emitting light with a longer wavelength, i.e., a red shift in the emission wavelength. Therefore, it can not only absorb harmful blue light with a center wavelength range of 400 nm to 455 nm emitted by the blue light-emitting layer, but also convert this harmful blue light into beneficial blue light, reducing the harm of harmful blue light to the human eye, and even reducing harmful blue light to almost zero, resulting in a better user experience.

[0033] In one possible implementation of the first aspect, the particle size range of the inorganic material includes 2.0 nm to 2.5 nm.

[0034] In this implementation, the absorption of harmful blue light and UV light, as well as the uniformity of the blue color film, are taken into account. This makes it possible for inorganic materials to absorb short-wavelength harmful blue light in the wavelength range of 400nm to 455nm, while also reducing the agglomeration problem of inorganic materials when dispersed in the blue color film.

[0035] In one possible implementation of the first aspect, the diameter of the inorganic material ranges from 1 nm to 15 nm.

[0036] In this implementation, an inorganic material is added to the organic material that transmits blue wavelengths in the current blue color filter. The diameter of the added inorganic material ranges from 1 nm to 15 nm. The small diameter of the inorganic material allows it to fully absorb blue light. Simultaneously, the inorganic material is a semiconductor nanocrystal material with a core-shell structure. As the particle size changes, it exhibits different band structures; the smaller the particle size, the blue shift in the emission spectrum. Therefore, the inorganic material can absorb high-energy light higher than its band gap (Eg). When light irradiates the inorganic material, valence band (VB) electrons are excited to the conduction band (CB), and then the electrons return to the valence band (VB), emitting light with a longer wavelength—a red shift in the emission wavelength. This not only absorbs harmful blue light emitted by the blue emitting layer in the center wavelength range of 400 nm to 455 nm, but also converts this harmful blue light into beneficial blue light, reducing the harm of harmful blue light to the human eye, and even reducing harmful blue light to almost zero, resulting in a superior user experience.

[0037] In one possible implementation of the first aspect, the diameter of the inorganic material ranges from 1.8 nm to 4 nm.

[0038] In this implementation, the absorption of harmful blue light and UV light, as well as the uniformity of the blue color film, are taken into account. This makes it possible for inorganic materials to absorb short-wavelength harmful blue light in the wavelength range of 400nm to 455nm, while also reducing the agglomeration problem of inorganic materials when dispersed in the blue color film.

[0039] In one possible implementation of the first aspect, the blue color filter is a single-layer structure, which is a mixture of organic and inorganic materials that transmit blue wavelengths, with the concentration ratio of inorganic materials to organic materials that transmit blue wavelengths ranging from 30% to 50%.

[0040] In this implementation, when the concentration of quantum dots in the monolayer structure relative to the organic material transmitting blue wavelengths is too low, the absorption effect of quantum dots on harmful blue light emitted by the blue emitting layer in the center wavelength range of 400nm to 455nm is weak. Conversely, when the concentration of quantum dots in the monolayer structure relative to the organic material transmitting blue wavelengths is too high, the quantum dots may cause the organic material transmitting blue wavelengths to become too brittle, potentially leading to cracks when the display device is completed. Therefore, setting the concentration ratio of inorganic materials relative to the organic material transmitting blue wavelengths to 30% to 50% achieves both good absorption of harmful blue light in the 400nm to 455nm range and prevents cracks from appearing when the display device is completed.

[0041] In one possible implementation of the first aspect, the blue color film is divided into multiple sub-layers along the OY direction, and the material of at least one sub-layer includes organic materials and inorganic materials that transmit blue wavelengths, and the organic materials that transmit blue wavelengths are mixed with the inorganic materials; along the direction away from the blue light-emitting layer, the concentration ratio of inorganic materials to organic materials that transmit blue wavelengths decreases in the multiple sub-layers; wherein, the OY direction is perpendicular to the substrate.

[0042] In this implementation, by setting different concentrations of quantum dots in each sublayer of the multilayer structure relative to the organic material that transmits blue wavelengths, the distribution of quantum dots along the direction away from the blue light-emitting layer is made into a concentration gradient distribution. Specifically, the concentration of quantum dots is high near the OLED blue light-emitting layer and low far from the OLED blue light-emitting layer. Thus, the absorption of harmful blue light with a center wavelength range of 400nm to 455nm emitted by the blue light-emitting layer can be effectively achieved through different structures, without causing cracks to appear when the display device is completed.

[0043] In one possible implementation of the first aspect, multiple sublayers increase in thickness along a direction perpendicular to the substrate, away from the blue emitting layer.

[0044] In this implementation, by setting different concentrations and thicknesses of quantum dots in each sublayer of the multilayer structure relative to the organic material that transmits blue wavelengths, the distribution of quantum dots along the direction away from the blue light-emitting layer exhibits a concentration gradient distribution. Specifically, the concentration of quantum dots is high near the OLED blue light-emitting layer and low far from the OLED blue light-emitting layer, and the thickness is inversely proportional to the concentration of quantum dots. Thus, different structures can be used to effectively absorb harmful blue light with a center wavelength range of 400nm to 455nm emitted by the blue light-emitting layer without causing cracks to appear when the display device is completed.

[0045] In one possible implementation of the first aspect, the blue color filter is divided into a first sublayer and a second sublayer along the OY direction. The first sublayer is disposed between the blue emitting layer and the second sublayer. The material of the first sublayer includes a first organic material and a first inorganic material that transmit blue wavelengths. The material of the second sublayer includes a second organic material and a second inorganic material that transmit blue wavelengths. The concentration ratio of the first inorganic material to the first organic material that transmits blue wavelengths ranges from 30% to 50%, and the thickness of the first sublayer along the direction perpendicular to the substrate ranges from 0.1 μm to 1.5 μm. The concentration ratio of the second inorganic material to the second organic material that transmits blue wavelengths ranges from 5% to 20%, and the thickness of the second sublayer along the direction perpendicular to the substrate is greater than or equal to 1.5 μm.

[0046] In this implementation, by setting the concentration of quantum dots in the first sublayer relative to the organic material that transmits blue wavelengths to be greater than that in the second sublayer relative to the organic material that transmits blue wavelengths, and by setting the thickness of the first sublayer to be less than that of the second sublayer, the quantum dots are distributed in a concentration gradient. Thus, different structures can be used to effectively absorb harmful blue light emitted by the blue light-emitting layer in the center wavelength range of 400nm to 455nm, without causing cracks to appear when the display device is completed.

[0047] In one possible implementation of the first aspect, the blue color filter is divided into a first sublayer and a second sublayer along the OY direction. The first sublayer is disposed between the blue light-emitting layer and the second sublayer. The material of the first sublayer includes a first organic material and a first inorganic material that transmit blue wavelengths. The material of the second sublayer includes a second organic material that transmits blue wavelengths. The concentration ratio of the first inorganic material to the first organic material that transmits blue wavelengths ranges from 30% to 50%, and the thickness of the first sublayer along the direction perpendicular to the substrate ranges from 0.1 μm to 1.5 μm. The concentration ratio of the second inorganic material to the second organic material that transmits blue wavelengths is 0%, and the thickness of the second sublayer along the direction perpendicular to the substrate is greater than or equal to 1.5 μm.

[0048] In this implementation, quantum dots are not placed in the second sub-layer. That is, the concentration of quantum dots in the organic material that transmits blue wavelengths in the first sub-layer is greater than that in the organic material that transmits blue wavelengths in the second sub-layer, and the thickness of the first sub-layer is less than that of the second sub-layer. This makes the distribution of quantum dots present as a concentration gradient. Thus, different structures can be used to effectively absorb harmful blue light emitted by the blue light-emitting layer in the center wavelength range of 400nm to 455nm, without causing cracks to appear when the display device is completed.

[0049] In a second aspect, an electronic device is provided, including a display device as described in the first aspect or any possible implementation thereof.

[0050] This application provides an electronic device that can effectively reduce harmful blue light in the 400nm-455nm range from entering the human eye, or even reduce harmful blue light to almost zero, thereby reducing the damage of harmful blue light in the electronic device to the human eye, achieving healthy display, and providing a better user experience.

[0051] This application provides a display device in which the inorganic material disposed in the blue color filter is quantum dot and / or perovskite material. The band gap of the quantum dot and / or perovskite material is 2.72 eV to 3.06 eV, which can absorb high-energy light with a band gap greater than its width. Therefore, when light shines on the quantum dot and / or perovskite material, valence band (VB) electrons are excited to the conduction band (CB), and then the electrons return to the valence band (VB), emitting light with a longer wavelength, i.e., a redshift in the emission wavelength. This allows the device to absorb blue light emitted by the blue light-emitting layer with a center wavelength range of 400 nm to 455 nm, achieving a healthy OLED screen display that reduces harmful blue light. Furthermore, no additional processes are required, making it simple and easy to implement. Attached Figure Description

[0052] Figure 1 This is a schematic diagram of the overall structure of an electronic device provided in an embodiment of this application;

[0053] Figure 2 for Figure 1 A schematic diagram of the disassembled structure of an electronic device;

[0054] Figure 3 A blue light spectrum provided for an embodiment of this application;

[0055] Figure 4 This is a schematic diagram of the structure of a display device provided in an embodiment of this application;

[0056] Figure 5 This is a schematic diagram of another display device provided in an embodiment of this application;

[0057] Figure 6 This is a schematic diagram of the structure of another display device provided in an embodiment of this application;

[0058] Figure 7 This is a schematic diagram of another display device provided in an embodiment of this application;

[0059] Figure 8 A schematic diagram illustrating the transmittance of an OCA for different wavelengths of light, provided as an embodiment of this application;

[0060] Figure 9 An absorption diagram of blue light wavelength provided in an embodiment of this application;

[0061] Figure 10 This is a partial structural diagram of an electronic device provided in an embodiment of this application.

[0062] Figure label:

[0063] 01-Mobile phone; 100-Display screen; 101-Mid-frame; 102-Back cover; 103-Circuit board assembly; 1031-Main circuit board; 1032-Electronic components; 104-Battery;

[0064] 02-Display device; 500-Substrate; 11-Driving circuit; 12-Emitting layer; 13-Encapsulation layer; 131-First inorganic layer; 132-Organic layer; 133-Second inorganic layer; 14-Touch layer; 15-Color filter layer; 151-Black matrix; 1521-Red color filter; 1522-Green color filter; 1523-Blue color filter; 201-First sublayer; 202-Second sublayer; 16-Organic material that transmits blue wavelength; 161-First organic material that transmits blue wavelength; 162-Organic material that transmits blue wavelength. Second organic material; 17-Inorganic material; 171-First inorganic material; 172-Second inorganic material; 18-Adhesive layer; 19-Cover plate; EL-Light-emitting device; 512-Pixel defining layer; 51-Red light-emitting layer; 52-Green light-emitting layer; 53-Blue light-emitting layer; d1-The value by which the first boundary of the orthographic projection of the blue color filter on the substrate exceeds the first boundary of the orthographic projection of the blue light-emitting layer on the substrate; d2-The value by which the second boundary of the orthographic projection of the blue color filter on the substrate exceeds the second boundary of the orthographic projection of the blue light-emitting layer on the substrate. The values ​​are: M11 - First boundary of the orthographic projection of the blue color filter on the substrate; M12 - Second boundary of the orthographic projection of the blue color filter 1523 on the substrate; M21 - First boundary of the orthographic projection of the blue emitting layer on the substrate; M22 - Second boundary of the orthographic projection of the blue emitting layer on the substrate; h1 - Thickness of the second sublayer perpendicular to the substrate; h2 - Thickness of the first sublayer perpendicular to the substrate; 200 - Red emitting device; 300 - Green emitting device; 400 - Blue emitting device; 501 - Buffer layer; 50 2-Active layer; 503-Gate insulating layer; 504-Gate; 505-First electrode; 506-Insulating layer; 507-Second electrode; 508-Interlayer dielectric layer; 509-Source; 510-Drain; 511-Planing layer; 513-September; 1-Anode; 2-Hole injection layer; 3-Hole transport layer; 4-Electron blocking layer; 6-Hole blocking layer; 7-Electron transport layer; 8-Electron injection layer; 9-Cathode; 21-First electrode; 22-Second electrode; 600-Support film; 601-First pressure-sensitive adhesive. Detailed Implementation

[0065] Unless otherwise defined, the technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having” and variations thereof in the specification, claims and drawings of this application are intended to cover non-exclusive inclusion.

[0066] In the description of the embodiments of this application, the technical terms "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly indicating the number, specific order, or primary and secondary relationship of the indicated technical features.

[0067] The term "embodiment" in this document means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment that is mutually exclusive with other embodiments.

[0068] In the embodiments of this application, the term "and / or" is only a description of the relationship between related objects, indicating that there can be three kinds of relationships. For example, A and / or B can represent three situations: A exists alone, A and B exist at the same time, and B exists alone.

[0069] Additionally, the character " / " in this article generally indicates that the objects before and after it are in an "or" relationship.

[0070] In this application embodiment, "multiple" means two or more (including two), similarly, "multiple groups" means two or more (including two groups), and "multiple layers" means two or more (including two layers), unless otherwise explicitly specified and limited.

[0071] In the embodiments of this application, "at least one" means one or more.

[0072] In the embodiments of this application, the technical terms "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation or be constructed in a specific orientation, etc., and should not be construed as a limitation on the embodiments of this application.

[0073] In the embodiments of this application, the technical terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application according to the specific circumstances.

[0074] In modern life, electronic devices such as laptops and mobile phones are playing an increasingly important role and are gradually becoming one of the necessities of people's lives.

[0075] This application provides an electronic device, without limiting the specific type of the electronic device. In some embodiments, the electronic device may include consumer electronics terminal products, home electronics products, automotive electronics products, financial terminal electronics products, and communication electronics products, etc.

[0076] Consumer electronics terminal products can include laptops, tablets, laptops, handheld computers, personal computers (PCs), mobile phones, e-readers, desktop monitors, cellular phones, drones, personal digital assistants (PDAs), smart wearable devices (e.g., smart bracelets, smartwatches, headphones), ultra-mobile personal computers (UMPCs), augmented reality (AR) / virtual reality (VR) devices, and other Internet of Things (IoT) devices. Home electronics products can include televisions, smart door locks, remote controls, refrigerators, rechargeable small household appliances (e.g., soymilk makers, robot vacuum cleaners), printers, projectors, etc. In-vehicle electronics products can include in-vehicle navigation systems, in-vehicle high-density digital video discs (DVDs), etc. Financial terminal electronics products can include automated teller machines (ATMs) and self-service terminals. Communication electronics products can include servers, storage devices, base stations, and other communication equipment.

[0077] This application does not limit the specific form of the above-described electronic device. For ease of explanation, a mobile phone will be used as an example below.

[0078] Please refer to Figure 1 and Figure 2 , Figure 1 This is a schematic diagram of an electronic device to which some embodiments of this application are applicable. Figure 2 for Figure 1 The diagram shows a disassembled electronic device.

[0079] in, Figure 1 and Figure 2 The electronic devices shown are illustrated using tablet phones as an example. In other embodiments, the electronic device may be other types of mobile phones, such as foldable phones.

[0080] exist Figure 1 and Figure 2 In the example, the electronic device may include a display screen 100, a mid-frame 101, a back cover 102, a circuit board assembly 103, and a battery 104, etc. It is understood that... Figure 1 and Figure 2 The accompanying drawings below only schematically illustrate some components of the electronic device; the actual shape, size, location, and structure of these components are not subject to change. Figure 1 and Figure 2 And the limitations of the figures below.

[0081] The specific structure of the electronic device to which the embodiments of this application apply will be further described below.

[0082] Please refer to Figure 1 and Figure 2 Taking a mobile phone 01 as an example, the mobile phone 01 may include a display screen 100 and a mid-frame 101, with the display screen 100 located on one side of the mid-frame 101.

[0083] In the application, the display screen 100 can be used to display images, videos, etc. The display screen 100 here can be an OLED display, etc.

[0084] exist Figure 1 In the illustrated embodiment, the electronic device can be a rectangular flat plate. Of course, the electronic device can also be any other shape, depending on the actual application.

[0085] like Figure 2 As shown, the mobile phone 01 may also include structures such as a back cover 102, a circuit board assembly 103, and a battery 104.

[0086] The back cover 102 can be located on the side of the middle frame 101 away from the display screen 100, and the back cover 102 and the middle frame 101 can form an internal accommodating space for the mobile phone 01, which can accommodate structures such as the circuit board assembly 103 and the battery 104.

[0087] The aforementioned circuit board assembly 103 may include a main circuit board 1031 and electronic components 1032, etc. The main circuit board 1031 can be used to carry the electronic components 1032 and to perform signal interaction with the electronic components 1032. Figure 2 The following explanation uses circuit board assembly 103, which includes two electronic components 1032, as an example. Of course, the number of electronic components 1032 is not limited to two; the specific number depends on the actual application.

[0088] In applications, the main circuit board 1031 may include printed circuit boards (PCBs), flexible printed circuit boards (FPCs), etc.

[0089] In applications, electronic components 1032 may include, but are not limited to, chips, resistors, capacitors, inductors, potentiometers, electron tubes, heat sinks, electromechanical components, connectors, semiconductor discrete devices, sensors, power supplies, switches, micro motors, electronic transformers, relays, subscriber identity modules (SIM) cards, etc.

[0090] The aforementioned battery 104 can be used to provide power to structures within the mobile phone 01, such as the display screen 100 and the circuit board assembly 103.

[0091] Of course, the aforementioned mobile phone 01 may also include other structures such as microphone, speaker, and camera, which will not be described in detail here.

[0092] Existing OLED display devices primarily utilize driving circuits to control the emission of multiple light-emitting units to form a display technology. Taking a blue light-emitting unit as an example, the blue light emitted by the blue light-emitting unit in current OLED display devices exhibits a spectrum as follows: Figure 3 As shown, the main emission wavelengths are distributed in the range of 400nm to 520nm, among which... Figure 3 The horizontal axis represents wavelength in nanometers (nm), and the vertical axis represents luminous intensity (SR) in w / m². 2 ( / nm / sr). In the 430nm to 520nm wavelength range, blue light in the 430nm to 450nm range has a short wavelength and high energy, which can directly enter the human eye and cause irreversible damage to the physiological structure of the human eye. This part of blue light is called harmful blue light.

[0093] Traditional OLED display devices, such as the currently used top-emitting OLED display devices, cannot effectively absorb harmful blue light in the 430nm-450nm range from the display screen to the various film layers. This results in a transmittance of more than 90% for harmful blue light in the 430nm-450nm range, allowing it to penetrate the film layers and enter the human eye, causing damage.

[0094] Therefore, harmful blue light in the 430nm-450nm range is one of the main problems affecting the health of OLED displays.

[0095] In view of this, embodiments of this application provide a display device in which organic and inorganic materials that transmit blue wavelengths are disposed in a blue color filter. The inorganic material is a quantum dot and / or a perovskite material, and the band gap Eg of the quantum dot and / or perovskite material is in the range of 2.72eV to 3.06eV, which can absorb high-energy light with a band gap greater than its Eg. Thus, when light shines on the quantum dot and / or perovskite material, valence band (VB) electrons are excited to the conduction band (CB), and then the electrons return to the valence band (VB), emitting light with a longer wavelength, i.e., a redshift in the emission wavelength. This allows the device to absorb blue light with a center wavelength range of 400nm to 455nm emitted by the blue light-emitting layer, achieving a healthy OLED screen display that reduces harmful blue light. In addition, no additional processes are required, making it simple and easy to implement.

[0096] Therefore, when this display device is applied to electronic devices, an electronic device with an integrated color filter for health display can be obtained. This electronic device can effectively reduce the amount of blue light in the 400nm-455nm range that enters the human eye, and even reduce harmful blue light to almost zero, thereby reducing the damage of harmful blue light in electronic devices to the human eye and providing a better user experience.

[0097] Please refer to the following: Figures 4 to 10 The display device 02 provided in the embodiments of this application will be described in detail.

[0098] like Figures 4 to 9 As shown, the display device 02 provided in this application embodiment includes: a substrate 500, and a light-emitting device EL and a color filter layer 15 located on the substrate 500. The color filter layer 15 is disposed on the light-emitting side of the light-emitting device EL. The light-emitting device EL includes multiple light-emitting layers arranged in an array, and at least one blue light-emitting layer is among the multiple light-emitting layers.

[0099] like Figures 4 to 9 As shown, the color filter layer 15 includes multiple color filters arranged in an array. The color of each color filter is the same as the color of a light-emitting layer, and the orthographic projection of the color filter on the substrate 500 at least partially overlaps with the orthographic projection of the light-emitting layer on the substrate 500. Among all the color filters, the color filter whose orthographic projection on the substrate 500 partially overlaps with the orthographic projection of the blue light-emitting layer on the substrate 500 is the blue color filter. The material of the blue color filter includes organic material 16 and inorganic material 17 that transmit blue wavelengths. The band gap Eg of the inorganic material 17 ranges from 2.72 eV to 3.06 eV and is used to absorb blue light emitted by the blue light-emitting layer with a center wavelength range of 400 nm to 455 nm.

[0100] In applications, the material of the substrate is not specifically limited, and it may include flexible materials, such as polyimide (PI).

[0101] For a light-emitting device comprising multiple light-emitting layers arranged in an array, these light-emitting layers can include a first-color light-emitting layer, a second-color light-emitting layer, and a third-color light-emitting layer. The first-color light-emitting layer can be red, the second-color light-emitting layer can be green, and the third-color light-emitting layer can be blue. Of course, the light-emitting layers can also be any other color, depending on the specific application. Furthermore, the light-emitting layers can simultaneously include red, green, or blue light-emitting layers, or they can include only one color, such as only blue. The specific number of light-emitting layers is not specifically limited.

[0102] Figures 4 to 7 The illustration is given by taking the example of a light-emitting layer 12 comprising multiple light-emitting layers arranged in an array, wherein the multiple light-emitting layers include a red light-emitting layer 51, a green light-emitting layer 52, and a blue light-emitting layer 53.

[0103] The blue luminescent layer contains blue luminescent materials, which may include pyrene derivatives, anthracene derivatives, fluorene derivatives, perylene derivatives, styrene-amine derivatives, metal complexes, etc. For example, the blue luminescent material can be N1,N6-bis([1,1'-biphenyl]-2-yl)-N1,N6-bis([1,1'-biphenyl]-4-yl)pyrene-1,6-diamine; ADN, the Chinese name of ADN is 9,10-bis-(2-naphthyl)anthracene; MADN, the Chinese name of MADN is 2-methyl-9,10-bis-2-naphthylanthracene; TBPe, the Chinese name of TBPe is 2,5,8,11-tetratert-butylperylene; BDAVBi, the Chinese name of BDAVBi is 4,4'-bis[4-(diphenylamino)styryl]biphenyl; DPAVBi, the Chinese name of DPAVBi is 4,4'-bis[4-(di-p-tolylamino)styryl]biphenyl; FIrpic, the Chinese name of FIrpic is bis(4,6-difluorophenylpyridine-C2,N)pyridinecarboxyiridium.

[0104] The green luminescent layer contains a green luminescent material, which may include coumarin dyes, quinacridine copper derivatives, polycyclic aromatic hydrocarbons, diamine anthracene derivatives, carbazole derivatives, metal complexes, etc. For example, the green luminescent material may be C-6 (coumarin 6); C-525T (coumarin 545T); QA (quinacridine copper); DMQA (N,N'-dimethylquinacridone); DPT (5,12-diphenylnaphthonaphthalene); BA-NPB (N10,N10'). -Diphenyl-N10,N10'-Diphenyldicarboxyl-9,9'-Dianthracene-10,10'-Diamine; Alq3, the Chinese name of Alq3 is tris(8-hydroxyquinoline)aluminum(III); Ir(ppy)3, the Chinese name of Ir(ppy)3 is tris(2-phenylpyridine)iridium; Ir(ppy)2(acac), the Chinese name of Ir(ppy)2(acac) is acetylacetonate di(2-phenylpyridine)iridium.

[0105] The red luminescent layer contains red luminescent materials, which may include DCM series materials, metal complexes, etc. For example, the red luminescent material can be DCM, whose Chinese name is 4-(dicyanomethylene)-2-methyl-6-(4-dimethylaminostyryl)-4H-pyran; DCJTB, whose Chinese name is 4-(dicyanomethylene)-2-tert-butyl-6-(1,1,7,7-tetramethyljulonidin-9-enyl)-4H-pyran; Ir(piq)2(acac), whose Chinese name is bis(1-phenylisoquinoline)(acetylacetone)iridium(III); PtOEP, whose Chinese name is octaethylporphyrin platinum; Ir(btp)2(acac), whose Chinese name is bis(2-(2'-benzothiophene)pyridine-N,C3')(acetylacetone)iridium, etc.

[0106] In applications, the structure of the color filter layer is not specifically limited. For example, the color filter layer may include a black matrix and multiple color filters arranged in an array, with the color filters spaced apart. The black matrix is ​​positioned between all the color filters. These color filters may include a first color filter, a second color filter, and a third color filter. The first color filter may be red, the second color filter may be green, and the third color filter may be blue. Of course, the color filters can also be any other color, depending on the actual application. Furthermore, the color filter layer may simultaneously include red, green, or blue color filters, or it may include only one color filter, such as only blue. The specific number can be determined according to actual requirements. Moreover, the number of color filters included in the color filter layer is not specifically limited; for example, the number of color filters can be determined based on the number of light-emitting layers.

[0107] Figures 4 to 7 The illustration is based on an example where the color filter layer 15 includes a black matrix 151 and multiple color filters arranged in an array, with the multiple color filters spaced apart. The black matrix 151 is positioned between all adjacent color filters, and the color filters include a red color filter 1521, a green color filter 1522, and a blue color filter 1523.

[0108] It should be understood that the orthographic projection of the color filter on the substrate and the orthographic projection of the emissive layer on the substrate at least partially coincide means that the orthographic projection of the color filter on the substrate and the orthographic projection of the emissive layer on the substrate completely coincide; or, the orthographic projection of the emissive layer on the substrate is located within the orthographic projection of the color filter on the substrate and the orthographic projection of the emissive layer on the substrate.

[0109] In applications, the bandgap width Eg of inorganic materials is not specifically limited. For example, the Eg of inorganic materials can be 2.72eV, 2.8eV, 2.85eV, 2.9eV, 3.0eV, or 3.05eV, etc.

[0110] There is no specific limitation on the type of inorganic material. For example, inorganic materials may include quantum dots (also known as QDs), perovskites, etc. In this case, the quantum dots can be core-shell structured quantum dot particles. It should be noted that when quantum dots are selected as the inorganic material, the display device is a quantum dot light-emitting diode (QLED) display device.

[0111] In one or more embodiments, the quantum dots that absorb blue light can be semiconductor nanocrystal particles, such as at least one of silicon (Si) nanocrystals, II-VI compound nanocrystals, III-V compound nanocrystals, III-VI compound nanocrystals, IV-VI compound nanocrystals, I-III-VI compound nanocrystals, II-IV-VI compound nanocrystals, and IV elemental nanocrystals.

[0112] Furthermore, the semiconductor nanocrystal particles with a core-shell structure include a core layer and a shell layer, with the shell layer covering the core layer. The core layer includes any one of cadmium selenide (CdSe), cadmium telluride (CdTe), cadmium sulfide (CdS), and indium phosphide (InP); the shell layer includes zinc sulfide (ZnS), etc.

[0113] The shape of quantum dot materials is not specifically limited. For example, quantum dot materials may include spherical quantum dot materials, plate-shaped quantum dot materials, rod-shaped quantum dot materials, or other quantum dot materials of any shape.

[0114] In one or more embodiments, the blue light-absorbing perovskite can be at least one of inorganic perovskite, inorganic-organic hybrid perovskite, etc.

[0115] When the perovskite is inorganic, the general structural formula of inorganic perovskite is AMX3; where A represents a cesium ion. ( Cs + ) M represents a divalent metal cation, including lead ions (Pb). 2+ ), tin ions (Sn) 2+ ), copper ions (Cu) 2+ Nickel ions (Ni) 2 + ), cadmium ions (Cd) 2+ ), chromium ions (Cr 2+ ), manganese ions (Mn) 2+ ), cobalt ions (Co) 2+ ), iron ions (Fe) 2+ germanium ions (Ge) 2+ ), ytterbium ions (Yb 2+ europium ions (Eu) 2+ Any one of the following; X is a halide anion, including chloride ions (Cl... - ), bromide ions (Br) - ) and iodide ions (I - Any one of them.

[0116] When the perovskite is an inorganic-organic hybrid perovskite, the general structural formula of the inorganic-organic hybrid perovskite is BMX3; where B is an organic amine cation, including NH3(CH2). n NH3 2+ M is a divalent metal cation, including Pb. 2+ Sn 2+ Cu 2 + Ni 2+ Cd 2+ Cr 2+ Mn 2+ Co 2+ Fe 2+ 、Ge 2+ Yb 2+ Eu 2+ Any of the following; X is a halide anion, including Cl... - ,Br - and I - Any one of them.

[0117] In applications, there are no specific restrictions on the type of light-emitting device. Depending on the direction of light emission, the light-emitting device can be a top-emitting device or a bottom-emitting device.

[0118] In addition, such as Figures 4 to 6 As shown, the display device 02 also includes a driving circuit 11, an encapsulation layer 13, a touch layer 14, an adhesive layer 18, and a cover plate 19. The driving circuit 11 is disposed between the substrate 500 and the light-emitting layer 12, the encapsulation layer 13 is disposed between the light-emitting layer 12 and the touch layer 14, the touch layer 14 is disposed between the encapsulation layer 13 and the color filter layer 15, and the adhesive layer 18 is disposed between the color filter layer 15 and the cover plate 19 and is used to bond the cover plate 19 to the color filter layer 15.

[0119] In application, the material of the adhesive layer is not specifically limited. For example, the material of the adhesive layer may include optically clear adhesive (OCA), etc. Figure 8 This is a graph showing the transmittance of OCA as a function of wavelength. Figure 8 In the diagram, the horizontal axis represents wavelength in nanometers (nm), and the vertical axis represents transmittance in percentage (%). OCA is an optically transparent adhesive that can seamlessly bond the cover plate to the color filter layer, and... Figure 8 As shown, OCA has a transmittance of nearly 100% for both ultraviolet (UV) and visible light, which will not affect the display.

[0120] In applications, the type of driving circuit is not specifically limited. For example, the driving circuit may include transistors, such as thin-film transistors (TFTs). The type of transistor is not limited; it can be a top-gate transistor (the gate is located above the source and drain) or a bottom-gate transistor (the gate is located below the source and drain). OLED display devices can control the light-emitting devices to emit light through the driving circuit to form a display technology.

[0121] In applications, the type of touch layer is not specifically limited. For example, the touch layer is located on the light-emitting side of the light-emitting device, and this structure belongs to the on-cell touch structure; or, the display device may also include a touch substrate. Figures 4 to 6 (Not shown), the touch layer is located on the side of the touch substrate away from the light-emitting layer. The touch layer and the light-emitting device can be an integral structure. The touch layer can be directly coated with an indium tin oxide (ITO) layer on the outer side of the touch substrate of the light-emitting device. Alternatively, the touch layer can be externally attached to the light-emitting device. Specifically, a layer of transparent polyethylene terephthalate (PET) can be first deposited on the outer side of the touch substrate of the light-emitting device, and then an ITO layer can be formed on the transparent PET as a substrate. The PET can be bonded to the light-emitting device using optical adhesive, which can be OCA adhesive. The touch substrate can be a glass substrate; there is no specific limitation on this.

[0122] In application, the type of cover is not specifically limited. For example, the cover may include a glass cover, etc., so as to play a protective role.

[0123] In application, the structure of the encapsulation layer is not specifically limited; for example, such as Figures 4 to 7 As shown, the encapsulation layer 13 includes a first inorganic layer 131, an organic layer 132, and a second inorganic layer 133. The first inorganic layer 131 is disposed between the light-emitting layer 12 and the organic layer 132, and the organic layer 132 is disposed between the first inorganic layer 131 and the second inorganic layer 133. Therefore, the first inorganic layer 131, organic layer 132, and second inorganic layer 133 in this thin-film encapsulation layer can perform an encapsulation function, protecting the light-emitting device and extending its service life.

[0124] The materials of the first inorganic layer and the second inorganic layer are not specifically limited. For example, the materials of the first inorganic layer and the second inorganic layer may include silicon nitride, etc.

[0125] It should be noted that, in order to improve light extraction efficiency and reduce external reflection, the display device in this embodiment integrates the color filter layer on the thin-film encapsulation layer. In this way, by forming the red, green, and blue color filters on the corresponding red, green, and blue light-emitting layers, respectively, the light extraction efficiency of the OLED light-emitting device can be increased by approximately 60%, while maintaining a low reflectivity.

[0126] Based on the above, the specific structure of the display device in the embodiments of this application is not limited. The following will use... Figure 7 The following example will be used to illustrate this.

[0127] For example, a display device may include a display substrate and light-emitting devices. The display substrate includes a plurality of pixel units arranged in an array, and the light-emitting devices include red light-emitting devices, green light-emitting devices, and blue light-emitting devices arranged in an array. Each pixel unit includes a red sub-pixel, a green sub-pixel, and a blue sub-pixel, wherein the red sub-pixel is electrically connected to the red light-emitting device, the green sub-pixel is electrically connected to the green light-emitting device, and the blue sub-pixel is electrically connected to the blue light-emitting device.

[0128] refer to Figure 7 As shown, in display device 02, the red sub-pixel is electrically connected to the red light-emitting device 200, the green sub-pixel is electrically connected to the green light-emitting device 300, and the blue sub-pixel is electrically connected to the blue light-emitting device 400.

[0129] Taking the leftmost red sub-pixel as an example, the specific structure of the red sub-pixel includes: a buffer layer 501, an active layer 502, a gate insulating layer 503, a gate metal layer (including a gate 504 and a first electrode 505), an insulating layer 506, an electrode layer (including a second electrode 507), an interlayer dielectric layer 508, a source / drain metal layer (including a source 509 and a drain 510), a planarization layer 511, and a pixel defining layer 512, all stacked sequentially on the substrate 500. The first electrode 505 and the second electrode 507 are used to form a storage capacitor. The pixel defining layer 512 includes an opening, within which a red light-emitting device 200 is disposed. The anode 1 of the red light-emitting device 200 is electrically connected to the drain 510 of the thin-film transistor. The display substrate also includes a spacer 513 located above the pixel defining layer 512.

[0130] The material of the active layer is not specifically limited. It can be an oxide semiconductor material, such as indium gallium zinc oxide (IGZO), indium tin zinc oxide (ITZO), indium zinc oxide (IZO), etc.; it can also be low-temperature polysilicon (LTPS); and of course, it can also be single-crystal silicon and other materials.

[0131] It should be noted that in the display substrate, spacers may be provided on some of the pixel boundary layers or on all of the pixel boundary layers; there is no limitation here.

[0132] The red light-emitting device 200 includes an anode 1, and a hole injection layer 2, a hole transport layer 3, an electron blocking layer 4, a red light-emitting layer 51, a hole blocking layer 6, an electron transport layer 7, an electron injection layer 8, and a cathode 9, which are sequentially stacked on the anode 1. Here, the first electrode 21 can be the anode and the second electrode 22 can be the cathode; alternatively, the first electrode 21 can be the cathode and the second electrode 22 can be the anode. The specific configuration can be determined based on the actual situation and is not limited here. It should be noted that this explanation uses the first electrode 21 as the cathode and the second electrode 22 as the anode, and the display device is a top-emitting type, as an example.

[0133] It should be understood that the color filter layer being set on the light-emitting side of the light-emitting device means that light emitted from the anode passes through the light-emitting layer into the cathode, and then exits from one side of the cathode. The side from which the cathode emits light is the light-emitting side of the light-emitting device.

[0134] It should be noted that, Figure 7 The light-emitting layers of the green light-emitting device 300 and the blue light-emitting device 400 shown are made of different materials than the light-emitting layer of the red light-emitting device 200. The light-emitting layer of the green light-emitting device is used to emit green light, the light-emitting layer of the blue light-emitting device is used to emit blue light, and the light-emitting layer of the red light-emitting device is used to emit red light. Furthermore, the electron blocking layers of the green and blue light-emitting devices are also made of different materials than the electron blocking layer of the red light-emitting device. Apart from the light-emitting layer and the electron blocking layer, the other film layers included in the green and blue light-emitting devices are the same as those in the red light-emitting device, and will not be described further here.

[0135] The aforementioned display device can be a flexible display device (also known as a flexible screen), or any health and eye-protection product or component with display function such as a mobile phone, watch, television, digital camera, or tablet computer, or the next generation, and can be any foldable or bendable product or component with display function. In addition, the above can form an RGB full-color OLED display device.

[0136] The display device provided in this application embodiment has organic and inorganic materials that transmit blue wavelengths disposed in the blue color filter. The inorganic material is a semiconductor nanomaterial with a band gap Eg ranging from 2.72 eV to 3.06 eV, which can absorb high-energy light with a band gap greater than its Eg. When light shines on the inorganic material, valence band (VB) electrons are excited to the conduction band (CB), and then the electrons return to the valence band (VB), emitting light with a longer wavelength, i.e., a redshift in the emission wavelength, thereby achieving the desired effect. Figure 9 As shown, blue light emitted by the blue emitting layer with a center wavelength range of 400nm to 455nm can be absorbed, achieving a healthy display of OLED screens that reduces harmful blue light; in addition, no additional processes are required, making it simple and easy to implement.

[0137] Therefore, when this display device is applied to electronic devices, an electronic device with an integrated color filter for health display can be obtained. This electronic device can effectively reduce the amount of blue light in the 400nm-455nm range that enters the human eye, and even reduce harmful blue light to almost zero, thereby reducing the damage of harmful blue light in electronic devices to the human eye and providing a better user experience.

[0138] Please refer to the following: Figures 4 to 10 To illustrate this, we take a color filter layer that includes three colors: red, green, and blue, and a light-emitting layer that includes three colors: red, green, and blue. In this case, the material of the red color filter only transmits organic materials with red wavelengths, the material of the green color filter only transmits organic materials with green wavelengths, and the material of the blue color filter includes organic materials and inorganic materials that transmit blue wavelengths, with the inorganic materials being core-shell structured spherical quantum dots.

[0139] Alternatively, as an achievable approach, the particle size range of core-shell structured spherical quantum dots includes 1.5 nm to 10 nm.

[0140] In applications, there is no specific limitation on the particle size of spherical quantum dots. For example, the particle size of spherical quantum dots can be 1.5nm, 2nm, 4nm, 6nm, 8nm, or 10nm, etc.

[0141] Furthermore, the absorption of blue light by quantum dots at different wavelengths can be tunable. Specifically, the size of the quantum dots can be adjusted, because smaller quantum dots are more conducive to absorbing short-wavelength blue light. However, if the particle size of the quantum dots is too small, they are more likely to agglomerate when dispersed in the blue color filter. Therefore, considering the absorption of harmful blue light and UV light as well as the uniformity of the blue color filter, the particle size range of spherical quantum dots includes 1.8 nm to 4 nm. For example, the particle size of spherical quantum dots can be 1.8 nm, 2.1 nm, 3 nm, 3.4 nm, 3.8 nm, or 4 nm, etc.

[0142] The display device provided in this application adds quantum dots to the organic material that transmits blue wavelengths in the current blue color filter. The particle size of the added quantum dots is distributed between 1.5nm and 10nm. The small particle size of the quantum dots can fully absorb blue light. At the same time, quantum dots are semiconductor nanocrystal materials with a core-shell structure. As the particle size changes, they have different band structures. The smaller the particle size, the blue shift of the emission spectrum. Thus, quantum dots can absorb high-energy light with a band gap greater than their band width Eg. When light shines on the quantum dot material, valence band (VB) electrons are excited to the conduction band (CB), and then the electrons return to the valence band (VB), emitting light with a longer wavelength, i.e., a red shift of the emission wavelength. Therefore, it can not only absorb harmful blue light with a center wavelength range of 400nm to 455nm emitted by the blue light-emitting layer, but also convert this harmful blue light into beneficial blue light. This provides an OLED screen for health display, reducing the harm of harmful blue light to the human eye, and can even reduce harmful blue light to almost zero, achieving a zero-harmful blue light eye-protection screen with a better user experience.

[0143] Alternatively, as an achievable approach, the diameter of the core-shell structured spherical quantum dots ranges from 1 nm to 15 nm.

[0144] In applications, there is no specific limitation on the diameter of spherical quantum dots. For example, the diameter of spherical quantum dots can be 1nm, 3nm, 7nm, 10nm, 12nm, or 15nm, etc.

[0145] Furthermore, the diameter of the spherical quantum dots ranges from 1.8 nm to 4 nm. For example, the diameter of the spherical quantum dots can be 1.8 nm, 2 nm, 2.5 nm, 3 nm, 3.5 nm, or 4 nm, etc.

[0146] The display device provided in this application adds quantum dots to the organic material that transmits blue wavelengths in the current blue color filter. The diameter of the added quantum dots is distributed between 1nm and 15nm. The small diameter of the quantum dots can fully absorb blue light. At the same time, quantum dots are semiconductor nanocrystal materials with a core-shell structure. With the change of particle size, they have different band structures. The smaller the particle size, the blue shift of the emission spectrum. Thus, quantum dots can absorb high-energy light with a band gap greater than their band width Eg. When light shines on the quantum dot material, valence band (VB) electrons are excited to the conduction band (CB), and then the electrons return to the valence band (VB), emitting light with a longer wavelength, i.e., a red shift of the emission wavelength. Therefore, it can not only absorb harmful blue light with a center wavelength range of 400nm to 455nm emitted by the blue light-emitting layer, but also convert this harmful blue light into beneficial blue light. This provides an OLED screen for health display, reducing the harm of harmful blue light to the human eye, and can even reduce harmful blue light to almost zero, achieving a zero-harmful blue light eye-protection screen with a better user experience.

[0147] Alternatively, as one possible approach, such as Figure 4 As shown, the blue color filter 1523 has a single-layer structure, which is a mixture of organic material 16 and inorganic material 17 that transmit blue wavelengths. The concentration ratio of inorganic material 17 to organic material 16 that transmits blue wavelengths ranges from 30% to 50%.

[0148] In applications, there is no specific limitation on the concentration of inorganic materials in the monolayer structure relative to the organic materials that transmit blue wavelengths. For example, the concentration of inorganic materials in the monolayer structure relative to the organic materials that transmit blue wavelengths can be 30%, 35%, 39%, 40%, 45%, or 50%, etc.

[0149] The display device provided in this application has the following characteristics: When the concentration of quantum dots in the monolayer structure relative to the organic material transmitting blue wavelengths is too low, the absorption effect of quantum dots on harmful blue light emitted by the blue emitting layer in the center wavelength range of 400nm to 455nm is weak. Conversely, when the concentration of quantum dots in the monolayer structure relative to the organic material transmitting blue wavelengths is too high, the quantum dots may cause the organic material transmitting blue wavelengths to become too brittle, potentially leading to cracks when the display device is completed. Therefore, setting the concentration ratio of inorganic materials relative to the organic material transmitting blue wavelengths to 30% to 50% achieves both good absorption of harmful blue light in the 400nm to 455nm range and prevents cracks from appearing when the display device is completed.

[0150] Alternatively, as one possible approach, such as Figure 5 and Figure 6 As shown, the blue color film 1523 is along the first direction ( Figure 5 and Figure 6The substrate 500 is divided into multiple sub-layers (OY direction). At least one sub-layer is composed of organic material 16 and inorganic material 17 that transmit blue wavelengths. The organic material 16 and inorganic material 17 that transmit blue wavelengths are mixed together. Along the direction away from the blue light-emitting layer 53, the concentration ratio of inorganic material 17 to organic material 16 that transmits blue wavelengths decreases in the multiple sub-layers. The OY direction is perpendicular to the substrate 500.

[0151] In application, the formation process of each sublayer is not specifically limited. For example, each sublayer can be formed by spin coating. Specifically, different materials are spin-coated to form each sublayer.

[0152] It should be understood that the material of at least one sublayer including organic and inorganic materials that transmit blue wavelengths means: it can be that the material of all sublayers includes organic and inorganic materials that transmit blue wavelengths, wherein the organic materials that transmit blue wavelengths in each sublayer can be the same or different, and the inorganic materials in each sublayer can be the same or different; or, it can be that the blue color film is divided into m sublayers along the OY direction (m is an integer greater than or equal to 2), and along the direction away from the blue light-emitting layer, the material of m-1 sublayers includes organic and inorganic materials that transmit blue wavelengths, and the material of the sublayer furthest from the blue light-emitting layer is only organic materials that transmit blue wavelengths, wherein the organic materials that transmit blue wavelengths in each sublayer can be the same or different, and the inorganic materials in each sublayer can be the same or different.

[0153] The thickness of each sublayer is not specifically limited. For example, along the direction away from the blue light-emitting layer, the thickness of multiple sublayers increases in a direction perpendicular to the substrate.

[0154] The following explanation uses the example of a blue colored film being divided into two sub-layers along the first direction.

[0155] As an example, such as Figure 5 As shown, the blue color filter 1523 is divided into a first sublayer 201 and a second sublayer 202 along the OY direction. The first sublayer 201 is disposed between the blue light-emitting layer 53 and the second sublayer 202. The material of the first sublayer 201 includes a first organic material 161 and a first inorganic material 171 that transmit blue wavelengths. The material of the second sublayer 202 includes a second organic material 162 and a second inorganic material 172 that transmit blue wavelengths. The concentration ratio of the first inorganic material 171 to the first organic material 161 that transmits blue wavelengths ranges from 30% to 50%. At this time, the thickness h2 of the first sublayer 201 along the direction perpendicular to the substrate 500 ranges from 0.1 μm to 1.5 μm. The concentration ratio of the second inorganic material 172 to the second organic material 162 that transmits blue wavelengths ranges from 5% to 20%. At this time, the thickness h1 of the second sublayer 202 along the direction perpendicular to the substrate 500 is greater than or equal to 1.5 μm.

[0156] In applications, the first organic material that transmits blue wavelengths and the second organic material that transmits blue wavelengths can be the same or different, and the first inorganic material and the second inorganic material can be the same or different. For example, the first inorganic material can be a quantum dot and the second inorganic material can be a perovskite; or, the first inorganic material and the second inorganic material can be the same quantum dot; or, the first inorganic material and the second inorganic material can be different quantum dots.

[0157] The concentration ratio of the first inorganic material to the first organic material that transmits the blue wavelength is not specifically limited. For example, the concentration ratio of the first inorganic material to the first organic material that transmits the blue wavelength can be 30%, 35%, 40%, 45%, 48%, or 50%, etc.

[0158] The thickness h2 of the first sublayer along the direction perpendicular to the substrate is not specifically limited. For example, h2 can be 0.1μm, 0.4μm, 0.7μm, 1μm, 1.2μm, or 1.5μm, etc.

[0159] There is no specific limitation on the concentration ratio of the second inorganic material to the second organic material that transmits the blue wavelength. For example, the concentration ratio of the second inorganic material to the second organic material that transmits the blue wavelength can be 5%, 8%, 10%, 15%, 18%, or 20%, etc.

[0160] The thickness h1 of the second sublayer along the direction perpendicular to the substrate is not specifically limited. For example, h1 can be 1.5μm, 1.6μm, 1.7μm, 1.8μm, 1.9μm, or 2.0μm, etc.

[0161] As another example, such as Figure 6 As shown, the blue color filter 1523 is divided into a first sublayer 201 and a second sublayer 202 along the OY direction. The first sublayer 201 is disposed between the blue light-emitting layer 53 and the second sublayer 202. The material of the first sublayer 201 includes a first organic material 161 and a first inorganic material 171 that transmit blue wavelengths. The material of the second sublayer 202 includes a second organic material 162 that transmits blue wavelengths. The concentration ratio of the first inorganic material 171 to the first organic material 161 that transmits blue wavelengths ranges from 30% to 50%. At this time, the thickness h2 of the first sublayer 201 along the direction perpendicular to the substrate 500 ranges from 0.1 μm to 1.5 μm. The concentration ratio of the second inorganic material 172 to the second organic material 162 that transmits blue wavelengths is 0%. At this time, the thickness h1 of the second sublayer 202 along the direction perpendicular to the substrate 500 is greater than or equal to 1.5 μm.

[0162] In applications, the first organic material that transmits blue wavelengths and the second organic material that transmits blue wavelengths can be the same or different.

[0163] The concentration ratio of the first inorganic material to the first organic material that transmits the blue wavelength is not specifically limited. For example, the concentration ratio of the first inorganic material to the first organic material that transmits the blue wavelength can be 30%, 35%, 40%, 45%, 48%, or 50%, etc.

[0164] The thickness h2 of the first sublayer along the direction perpendicular to the substrate is not specifically limited. For example, h2 can be 0.1μm, 0.4μm, 0.7μm, 1μm, 1.2μm, or 1.5μm, etc.

[0165] The thickness h1 of the second sublayer along the direction perpendicular to the substrate is not specifically limited. For example, h1 can be 1.5μm, 1.6μm, 1.7μm, 1.8μm, 1.9μm, or 2.0μm, etc.

[0166] The display device provided in this application embodiment, by setting the concentration and thickness of quantum dots in each sub-layer of the organic material that transmits blue wavelengths to be different, makes the distribution of quantum dots along the direction away from the blue light-emitting layer present a concentration gradient distribution. Specifically, the concentration of quantum dots is high near the OLED blue light-emitting layer and low far from the OLED blue light-emitting layer, and the thickness is inversely proportional to the concentration of quantum dots. Thus, the harmful blue light emitted by the blue light-emitting layer in the center wavelength range of 400nm to 455nm can be effectively absorbed through different structures, without causing cracks to appear when the display device is completed.

[0167] Alternatively, as one possible approach, such as Figures 4 to 6 As shown, the orthogonal projection of the blue emitting layer 53 on the substrate 500 is located within the orthogonal projection of the blue color filter 1523 on the substrate.

[0168] In applications, the shape of the blue colored film is not specifically limited. For example, the shape of the blue colored film may include a cube, a tetrahedron, a regular trapezoid, an inverted trapezoid, etc.

[0169] The shape of the blue emitting layer is not specifically limited. For example, the shape of the blue emitting layer may include a cube, a tetrahedron, etc.

[0170] Figures 4 to 6 The illustrations are all based on the example of a blue colored film being an inverted trapezoid and a blue luminescent layer being a tetrahedron.

[0171] In application, along the second direction ( Figures 4 to 6In the OX direction (the OX direction is perpendicular to the OY direction), the first boundary M11 of the orthogonal projection of the blue color filter 1523 on the substrate 500 exceeds the first boundary M21 of the orthogonal projection of the blue light-emitting layer 53 on the substrate 500 by a value d1 greater than or equal to 1 μm, and the second boundary M12 of the orthogonal projection of the blue color filter 1523 on the substrate 500 exceeds the second boundary M22 of the orthogonal projection of the blue light-emitting layer 53 on the substrate 500 by a value d2 greater than or equal to 1 μm.

[0172] In applications, the relationship between the value d1, where the first boundary of the orthogonal projection of the blue color filter on the substrate exceeds the first boundary of the orthogonal projection of the blue emitting layer on the substrate, and the value d2, where the second boundary of the orthogonal projection of the blue color filter on the substrate exceeds the second boundary of the orthogonal projection of the blue emitting layer on the substrate, is not specifically limited. For example, d1 can be greater than, less than, or equal to d2.

[0173] Furthermore, the first boundary of the orthogonal projection of the blue color filter on the substrate may be set to exceed the first boundary of the orthogonal projection of the blue emitting layer on the substrate by a value d1 ranging from 1.5 μm to 3.5 μm, and the second boundary of the orthogonal projection of the blue color filter on the substrate may exceed the second boundary of the orthogonal projection of the blue emitting layer on the substrate by a value d2 ranging from 1.5 μm to 3.5 μm.

[0174] The value d1 for the first boundary of the orthogonal projection of the blue color filter on the substrate exceeding the first boundary of the orthogonal projection of the blue light-emitting layer on the substrate is not specifically limited. For example, d1 can be 1.5μm, 1.8μm, 2μm, 2.5μm, 3μm or 3.5μm, etc.

[0175] The value d2 for the second boundary of the orthogonal projection of the blue color filter on the substrate exceeding the second boundary of the orthogonal projection of the blue light-emitting layer on the substrate is not specifically limited. For example, d2 can be 1.5μm, 1.8μm, 2μm, 2.5μm, 3μm or 3.5μm, etc.

[0176] The display device provided in this application embodiment, by placing the blue color filter on the light-emitting side of the blue light-emitting layer, and by making the area of ​​the blue color filter larger than the area of ​​the blue light-emitting layer, can ensure that the quantum dots in the blue color filter effectively absorb harmful blue light with a center wavelength range of 400nm to 455nm, so that the harmful blue light in the range of 400nm to 455nm can be converted into beneficial blue light. This reduces the harm of harmful blue light to people and avoids the loss of harmful blue light, which helps to reduce the power consumption of the display device.

[0177] The OLED display device provided in the embodiments of this application will now be assembled to form the following... Figure 10 The electronic device shown.

[0178] like Figure 10 As shown, the electronic device includes a back film 600, a first pressure-sensitive adhesive (PSA) 601 and a display device 02, which are sequentially stacked on the back film 600.

[0179] The aforementioned electronic devices can be flexible or rigid. They can be any health-protecting eye-care product or component with a display function, such as mobile phones, watches, televisions, digital cameras, or tablets, or next-generation products or components with a display function that can be folded or bent in any way.

[0180] It should be understood that the above description is merely to help those skilled in the art better understand the embodiments of this application, and is not intended to limit the scope of the embodiments of this application. Based on the examples given above, those skilled in the art can obviously make various equivalent modifications or changes. For example, some steps in various embodiments of the method may be optional, or new steps may be added; or any combination of two or more of the above embodiments. Such modifications, changes, or combinations also fall within the scope of the embodiments of this application.

[0181] It should also be understood that the above description of the embodiments of this application focuses on highlighting the differences between the various embodiments. Any similarities or differences not mentioned can be referred to each other. For the sake of brevity, they will not be repeated here.

[0182] It should also be understood that the sequence number of each process does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

[0183] It should also be understood that the methods, situations, categories, and classifications of embodiments in this application are for the convenience of description only and should not constitute a special limitation. Various methods, categories, situations, and features in embodiments can be combined without contradiction.

[0184] It should also be understood that, in the various embodiments of this application, unless otherwise specified or in case of logical conflict, the terms and / or descriptions between different embodiments are consistent and can be referenced by each other, and the technical features in different embodiments can be combined to form new embodiments according to their inherent logical relationships.

[0185] Finally, it should be noted that the above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A display device, characterized in that, The device includes a substrate, a light-emitting device and a color filter layer located on the substrate, the color filter layer being disposed on the light-emitting side of the light-emitting device, the light-emitting device including a plurality of light-emitting layers arranged in an array, and at least one of the plurality of light-emitting layers having a blue light-emitting layer; The color filter layer includes multiple color filters arranged in an array. The color of each color filter is the same as the color of a light-emitting layer, and the orthographic projection of the color filter on the substrate at least partially overlaps with the orthographic projection of the light-emitting layer of the same color on the substrate. Among all the color filters, the color filter whose orthographic projection on the substrate at least partially overlaps with the orthographic projection of the blue light-emitting layer on the substrate is the blue color filter. The material of the blue color filter includes organic materials and inorganic materials that transmit blue wavelengths. The band gap of the inorganic material is in the range of 2.72 eV to 3.06 eV, and it is used to absorb blue light emitted by the blue light-emitting layer with a center wavelength range of 400 nm to 455 nm. The inorganic material includes at least one of quantum dots and perovskite, wherein the quantum dots are nanocrystalline particles with a core-shell structure.

2. The display device according to claim 1, characterized in that, The plurality of light-emitting layers include a red light-emitting layer, a green light-emitting layer, and a blue light-emitting layer, and the plurality of color filters include a red color filter, a green color filter, and a blue color filter. Neither the material of the red color filter nor the material of the green color filter contains the inorganic material.

3. The display device according to claim 1, characterized in that, The particle size range of the inorganic material includes 1.5 nm to 10 nm; and / or, the diameter range of the inorganic material includes 1 nm to 15 nm.

4. The display device according to any one of claims 1 to 3, characterized in that, The blue color filter has a single-layer structure, which is formed by mixing the organic material that transmits blue wavelengths with the inorganic material. The concentration ratio of the inorganic material to the organic material that transmits blue wavelengths ranges from 30% to 50%.

5. The display device according to any one of claims 1 to 3, characterized in that, The blue color film is divided into multiple sub-layers along the first direction, and the material of at least one sub-layer includes the organic material that transmits blue wavelengths and the inorganic material, wherein the organic material that transmits blue wavelengths and the inorganic material are mixed together. The plurality of sublayers are arranged in a direction away from the blue emitting layer, and the concentration ratio of inorganic material to organic material that transmits blue wavelength decreases in each sublayer; wherein, the first direction is perpendicular to the substrate.

6. The display device according to claim 5, characterized in that, The plurality of sublayers are arranged in a direction away from the blue emitting layer, and the thickness of each sublayer increases in a direction perpendicular to the substrate.

7. The display device according to claim 5, characterized in that, The blue color film is divided into a first sub-layer and a second sub-layer along the first direction, and the first sub-layer is disposed between the blue light-emitting layer and the second sub-layer. The material of the first sublayer includes a first organic material and a first inorganic material that transmit blue wavelengths, and the material of the second sublayer includes a second organic material and a second inorganic material that transmit blue wavelengths; or, the material of the first sublayer includes a first organic material and a first inorganic material that transmit blue wavelengths, and the material of the second sublayer includes a second organic material that transmits blue wavelengths.

8. The display device according to claim 7, characterized in that, In the case where the material of the first sublayer includes a first organic material and a first inorganic material that transmits blue wavelengths, and the material of the second sublayer includes a second organic material and a second inorganic material that transmits blue wavelengths, the concentration ratio of the first inorganic material to the first organic material that transmits blue wavelengths ranges from 30% to 50%, and the concentration ratio of the second inorganic material to the second organic material that transmits blue wavelengths ranges from 5% to 20%.

9. The display device according to claim 8, characterized in that, Along the first direction, the thickness of the first sublayer ranges from 0.1 μm to 1.5 μm, and the thickness of the second sublayer is greater than or equal to 1.5 μm.

10. The display device according to any one of claims 1 to 3, characterized in that, The orthographic projection of the blue emitting layer on the substrate is within the orthographic projection of the blue color filter on the substrate.

11. The display device according to claim 10, characterized in that, Along the second direction, the boundary of the orthogonal projection of the blue color film onto the substrate extends beyond the boundary of the orthogonal projection of the blue emitting layer onto the substrate by a value greater than or equal to 1 μm; wherein, the second direction is perpendicular to the first direction.

12. The display device according to any one of claims 1 to 3, characterized in that, Nanocrystalline particles with a core-shell structure include at least one of silicon nanocrystals, group II-VI compound nanocrystals, group III-V compound nanocrystals, group II-V compound nanocrystals, group III-VI compound nanocrystals, group IV-VI compound nanocrystals, group I-III-VI compound nanocrystals, group II-IV-VI compound nanocrystals, and group IV elemental nanocrystals.

13. The display device according to claim 12, characterized in that, The nanocrystalline particles with a core-shell structure include a core layer and a shell layer, wherein the shell layer covers the core layer; The core layer includes at least one of cadmium selenide, cadmium telluride, cadmium sulfide, and indium phosphide; The shell comprises zinc sulfide.

14. The display device according to any one of claims 1 to 3, characterized in that, Perovskites include inorganic perovskites, the general structural formula of which is AMX3; Where A is Cs + ion; M is a divalent metal cation, including Pb. 2+ Sn 2+ Cu 2+ Ni 2+ Cd 2+ Cr 2+ Mn 2+ Co 2+ Fe 2+ 、Ge 2+ Yb 2+ and Eu 2 + any one of them; X is a halide anion, including Cl-. - ,Br - and I - Any one of them.

15. The display device according to any one of claims 1 to 3, characterized in that, Perovskites include inorganic-organic hybrid perovskites, the general structural formula of which is BMX3; Wherein, B is an organic amine cation, including NH3(CH2). n NH3 2+ ; M is a divalent metal cation, Pb 2+ Sn 2+ Cu 2+ Ni 2+ Cd 2+ Cr 2+ Mn 2+ Co 2+ Fe 2+ 、Ge 2+ Yb 2+ and Eu 2+ any one of them; X is a halide anion, including Cl-. - ,Br - and I - Any one of them.

16. An electronic device, characterized in that, Includes the display device as described in any one of claims 1 to 15.

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