Display panel and electronic device

Abstract

The present application relates to a display panel and an electronic device. The display panel comprises: a display layer, wherein the display layer comprises a plurality of pixel units, the plurality of pixel units comprise first sub-pixels and second sub-pixels, the first sub-pixels emit light of a first color, and the second sub-pixels emit light of a second color; and an anti-reflection layer, wherein the anti-reflection layer is arranged on a light emitting side of the second sub-pixels, and the anti-reflection layer is used for transmitting the light of the second color and reflecting the light of the first color. When the light of the first color leaks out in the second sub-pixels, the light emitted outwards by the second sub-pixels is mixed-color light, thereby affecting purity; and because the anti-reflection layer can transmit the light of the second color and reflect the light of the first color, when the anti-reflection layer is attached to the second sub-pixels, the light of the second color emitted is purer.

Description

Display panels and electronic devices Technical Field

[0001] The present application relates to the field of display, and in particular to a display panel and an electronic device. Background Art

[0002] With the development of technology, the applications of display panels are becoming more and more extensive and the scenarios of their use are increasing. The required light purity is also becoming more and more important.

[0003] Currently, sub-pixels of existing panels have partial light leakage, especially light leakage from the sides of the sub-pixels, which makes the light emitted from the sub-pixels mixed colors, thereby affecting color purity.

[0004] Summary of the Invention

[0005] The purpose of this application is to provide a display panel and an electronic device, which can improve the color purity of the display panel.

[0006] According to a first aspect of an embodiment of the present application, a display panel is provided, comprising: a display layer, the display layer comprising a plurality of pixel units, the plurality of pixel units comprising a first sub-pixel and a second sub-pixel, the first sub-pixel emitting light of a first color, and the second sub-pixel emitting light of a second color; and an anti-reflection layer, the anti-reflection layer being arranged on a light-emitting side of the second sub-pixel, the anti-reflection layer being used to transmit light of the second color and reflect light of the first color.

[0007] In some embodiments, the anti-reflection layer includes a first substrate, a second substrate, and a liquid crystal pattern configured between the first substrate and the second substrate, the orthographic projection of the liquid crystal pattern on the first substrate overlaps with the orthographic projection of the second sub-pixel on the first substrate, and has no overlap with the orthographic projection of the first sub-pixel on the first substrate, and the liquid crystal pattern is configured to transmit light of the second color and reflect light of the first color.

[0008] In some embodiments, the pixel unit further includes a third sub-pixel, which emits light of a third color. The orthographic projection of the third sub-pixel on the liquid crystal pattern is located within the liquid crystal pattern, and the liquid crystal pattern is configured to transmit light of the third color and reflect light of the first color.

[0009] In some embodiments, the liquid crystal pattern is a cholesteric liquid crystal, the chiral agent content of the cholesteric liquid crystal is greater than or equal to 2% and less than or equal to 4%, the monomer concentration is greater than or equal to 10% and less than or equal to 15%, and the initial reflection color of the cholesteric liquid crystal is adjusted to the blue-violet band.

[0010] In some embodiments, the thickness of the liquid crystal pattern is greater than or equal to 5 micrometers and less than or equal to 15 micrometers.

[0011] In some embodiments, the first substrate and the second substrate are transparent conductive film glass, and the thickness of the transparent conductive film glass is greater than or equal to 0.8 mm and less than or equal to 1.5 mm.

[0012] In some embodiments, the anti-reflection layer includes a third substrate and a material film on the side of the third substrate close to the display layer, the orthographic projection of the material film on the third substrate overlaps with the orthographic projection of the second sub-pixel on the first substrate, and the material film is used to transmit light of the second color and reflect light of the first color.

[0013] In some embodiments, the pixel unit further includes a third sub-pixel, the third sub-pixel emits light of a third color, an orthographic projection of the third sub-pixel on the material film is located within the material film, and the material film is configured to transmit light of the third color.

[0014] In some embodiments, there are multiple material films, and the multiple material films and the third substrate are sequentially covered on the second sub-pixel.

[0015] In some embodiments, the material film is one or more of a MgF2 film, a ZnS film, a TiO2 film, or a SiO2 film.

[0016] In some embodiments, the material film includes a ZnS film and a MgF2 film, the thickness of the ZnS film is greater than or equal to 50 nanometers and less than or equal to 80 nanometers, and the thickness of the MgF2 film is greater than or equal to 80 nanometers and less than or equal to 150 nanometers.

[0017] In some embodiments, the anti-reflection layer includes a fourth substrate and nanocolumns located on the side of the fourth substrate close to the display layer, the orthographic projection of the second sub-pixel on the fourth substrate and the orthographic projection of the nanocolumns on the fourth substrate overlap, and the nanocolumns are used to transmit light of the second color and reflect light of the first color.

[0018] In some embodiments, the inclination of the nanocolumns is greater than or equal to 5° and less than or equal to 15°, the diameter of the nanocolumns is greater than or equal to 60 nanometers and less than or equal to 100 nanometers, and the height is greater than or equal to 200 nanometers and less than or equal to 300 nanometers.

[0019] In some embodiments, the display layer includes a circuit layer, a light-emitting layer, an encapsulation layer, a scattering particle layer, and a color film layer arranged in sequence, wherein the light-emitting layer includes multiple blue light sources, and the color film layer includes a blue color film corresponding to the first sub-pixel and a red color film or a green color film corresponding to the second sub-pixel; the display layer also includes a quantum dot conversion layer corresponding to the second sub-pixel, and the quantum dot conversion layer is a red quantum dot conversion film or a green quantum dot conversion film.

[0020] A second aspect of the embodiments of the present application provides an electronic device, comprising any one of the display panels described above.

[0021] The beneficial technical effect brought about by the technical solution provided by the embodiment of the present application is: when the light of the first color leaks out of the second sub-pixel, the light emitted outward is mixed light, which affects its purity. Since the anti-reflection layer can transmit the light of the second color and reflect the light of the first color, when the anti-reflection layer is attached to the second sub-pixel, the second color light can be emitted more purely. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0023] FIG1 is a schematic structural diagram of an original display panel according to an embodiment of the present application.

[0024] FIG2 is a schematic structural diagram of a display panel according to an embodiment of the present application.

[0025] FIG3 is a schematic structural diagram of a display panel according to an embodiment of the present application.

[0026] FIG4 is a schematic structural diagram of a display panel according to an embodiment of the present application.

[0027] FIG. 5 is a schematic diagram illustrating the arrangement of cholesteric liquid crystal molecules according to an embodiment of the present application.

[0028] FIG6 is a schematic diagram showing light beam propagation according to an embodiment of the present application.

[0029] FIG. 7 is a schematic diagram illustrating Bragg reflection according to an embodiment of the present application.

[0030] FIG8 is a performance diagram showing a comparison curve of reflectivity of a glass cover with and without an anti-reflection film according to an embodiment of the present application.

[0031] FIG9A and FIG9B are graphs showing the reflectivity and transmittance performance of films at different tilt angles according to an embodiment of the present application.

[0032] 10A and 10B are performance diagrams of reflectivity and transmittance at different viewing angles when a green light nanorod with a wavelength of 532 nm and a tilt angle of 10° is shown according to an embodiment of the present application.

[0033] FIG11 is a graph showing transmittance performance of thin films of different thicknesses with a nanorod tilt angle of 10° according to an embodiment of the present application.

[0034] FIG. 12 is a graph showing transmittance performance of thin films corresponding to different nanorod diameters according to an embodiment of the present application.

[0035] 13A and 13B are respectively a schematic diagram and a working principle diagram of an inclined angle deposition technology device according to an embodiment of the present application.

[0036] Description of Reference Numerals DETAILED DESCRIPTION

[0037] Exemplary embodiments will be described in detail herein, with examples illustrated in the accompanying drawings. In the following description, when referring to the drawings, identical numerals in different figures represent identical or similar elements, unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.

[0038] The terms used in this application are for the purpose of describing specific embodiments only and are not intended to limit this application. Unless otherwise defined, technical or scientific terms used in this application should have the ordinary meaning understood by a person of ordinary skill in the art to which this application belongs. The use of "a" or "an," and similar terms in this specification and claims does not indicate a limitation of quantity, but rather indicates the presence of at least one. "Multiple" means two or more. "Include" or "comprising," and similar terms mean that the elements or objects listed before "include" or "comprising" include the elements or objects listed after "include" or "comprising," and their equivalents, and do not exclude other elements or objects. "Connected" or "connected," and similar terms are not limited to physical or mechanical connections and can include electrical connections, whether direct or indirect. "On" and / or "below," and similar terms are for convenience only and are not limited to a single position or spatial orientation. As used in this specification and the appended claims, the singular forms "a," "the," and "the" are intended to include the plural forms unless the context clearly indicates otherwise. It will also be understood that the term "and / or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

[0039] Currently, existing panels have partial light leakage, especially light leakage from the sides of sub-pixels, which makes the light emitted from the sub-pixels mixed color light, thereby affecting the purity of the color gamut.

[0040] As shown in Figures 1 to 4, the present application provides a display panel comprising a display layer and an anti-reflection layer 200. The display layer comprises a plurality of pixel units 100, each of which comprises a first sub-pixel 110 and a second sub-pixel 120. The first sub-pixel 110 emits light of a first color, and the second sub-pixel 120 emits light of a second color. The anti-reflection layer 200 is disposed on the light-emitting side of the second sub-pixel 120 and is configured to transmit the second color light and reflect the first color light.

[0041] It should be noted that the first sub-pixel 110 emits a first color light, and the second sub-pixel 120 emits a second color light, which are two different colors of light. The first color light and the second color light can be any two of blue, red, and green.

[0042] When the light of the first color leaks out of the second sub-pixel 120, the light emitted outward is mixed light, which affects its purity. Since the anti-reflection layer 200 can transmit the light of the second color and reflect the light of the first color, when the anti-reflection layer 200 is attached to the second sub-pixel 120, the light emitted by the second color can be made purer.

[0043] In one embodiment, referring to Figures 1-4, a quantum dot panel is provided with a circuit layer 310, a light-emitting layer 320, an encapsulation layer 330, a quantum dot conversion layer 340, a color filter layer 350, and a scattering particle layer 360. The blue sub-pixel comprises the circuit layer 310, the light-emitting layer 320, the encapsulation layer 330, the scattering particle layer 360, and the color filter layer 350, arranged in sequence; the red and green sub-pixels comprise the circuit layer 310, the light-emitting layer 320, the encapsulation layer 330, the quantum dot conversion layer 340, and the color filter layer 350, arranged in sequence. The circuit layer 310 controls circuit connectivity, the light-emitting layer 320 emits quantum dot light energy, the encapsulation layer 330 protects the light-emitting layer 320, the quantum dot conversion layer 340 generates light of a corresponding color when excited by the quantum dot light energy emitted by the light-emitting layer 320, the color filter layer 350 filters the emitted light, and the scattering particle layer 360 scatters the emitted blue light to increase the viewing angle.

[0044] Among them, the light-emitting layer 320 is often a blue light source, and the quantum dot conversion layer 340 is usually provided with green and red quantum dot conversion films, so that under the excitation of the blue light source, green and red light sources can be obtained plus the original blue light source, thus forming the three primary colors.

[0045] In this embodiment, the light-emitting layer 320 of the first sub-pixel 110 is a blue light-emitting source, the encapsulation layer 330 is N2 or Ar protective gas, the color film layer 350 is a blue color film, and the first color light is blue light; the light-emitting layer 320 of the second sub-pixel 120 is a blue light-emitting source, the encapsulation layer 330 is N2 or Ar protective gas, the quantum dot conversion layer 340 is a red quantum dot conversion film or a green quantum dot conversion film, the color film layer 350 is set in conjunction with the quantum dot conversion layer 340 to set a red color film or a green color film, and the second color light is red light or green light.

[0046] When the blue quantum dot conversion film excites the red or green color filter of the second sub-pixel 120, some blue light fails to excite successfully, and some blue light leaks out from the sides of the second sub-pixel 120. Therefore, under normal circumstances, the red or green light emitted by the second sub-pixel 120 is mixed with some blue light, resulting in less pure color and a narrower color gamut. In addition, the leakage of blue light increases the panel's energy consumption.

[0047] When the anti-reflection layer 200 is provided on the second sub-pixel 120, the anti-reflection layer 200 is used to transmit light of the second color and reflect light of the first color. That is, the anti-reflection layer 200 transmits red light and green light and reflects blue light. Furthermore, the blue light reflected back to the second sub-pixel 120 can again excite the red quantum dot conversion film or the green quantum dot conversion film of the second sub-pixel 120, thereby converting it into red light or green light. Therefore, providing the anti-reflection layer 200 on the second sub-pixel 120 has the following effects: 1. Red and green light are enhanced, thereby obtaining a wider color gamut. 2. The amount of doped blue light is correspondingly reduced, thereby obtaining a purer color. 3. Blue light is fully utilized, thereby reducing the power consumption of the panel.

[0048] Of course, in other embodiments, other conventional LEDs may be selected as the pixel unit 100, and the present application can still achieve the effect of reducing stray light and obtaining purer light.

[0049] In one embodiment, as shown in Figure 2, the anti-reflection layer 200 includes a first substrate 240, a second substrate 250, and a liquid crystal pattern 210 arranged between the first substrate 240 and the second substrate 250. The orthographic projection of the liquid crystal pattern 210 on the first substrate 240 overlaps with the orthographic projection of the second sub-pixel 120 on the first substrate 240, and does not overlap with the orthographic projection of the first sub-pixel 110 on the first substrate 240. The liquid crystal pattern 210 is configured to transmit light of the second color and reflect light of the first color.

[0050] The orthographic projection of the second sub-pixel 120 on the liquid crystal pattern 210 is located within the liquid crystal pattern 210, while the orthographic projection of the first sub-pixel 110 on the liquid crystal pattern 210 is located outside the liquid crystal pattern 210. Thus, the second sub-pixel 120 is shielded by the liquid crystal pattern 210, while the first sub-pixel 110 is not. Furthermore, the liquid crystal pattern 210 transmits light of the second color and reflects light of the first color. Therefore, with the help of the liquid crystal pattern 210, the second sub-pixel 120 can emit purer light.

[0051] In combination with the above embodiments, in a quantum dot panel, the liquid crystal pattern 210 can help obtain purer green light or red light, reduce noise in the green light or red light, and reduce the power consumption of the panel.

[0052] In this embodiment, the pixel unit 100 further includes a third sub-pixel 130, which emits light of a third color. The orthographic projection of the third sub-pixel 130 on the liquid crystal pattern 210 is located within the liquid crystal pattern 210, and the liquid crystal pattern 210 is configured to transmit light of the third color and reflect light of the first color.

[0053] The second sub-pixel 120 and the third sub-pixel 130 are shielded by the liquid crystal pattern 210, while the first sub-pixel 110 is not shielded by the liquid crystal pattern 210. The liquid crystal pattern 210 can transmit the second color light and the third color light and reflect the first color light. Therefore, the second color light and the third color light can be made purer.

[0054] The light emitted by the first sub-pixel 110, the second sub-pixel 120, and the third sub-pixel 130 can be arranged in order between blue, red, and green. For example, the first sub-pixel 110 emits blue light, the second sub-pixel 120 emits red light, and the third sub-pixel 130 emits green light. Alternatively, the first sub-pixel 110 emits red light, the second sub-pixel 120 emits blue light, and the third sub-pixel 130 emits green light. Alternatively, the first sub-pixel 110 emits blue light, the second sub-pixel 120 emits green light, and the third sub-pixel 130 emits red light. As long as one of the light sources is reflected and the other two are transmitted, it should fall within the scope of protection of this application.

[0055] As shown in Figures 5 through 7, cholesteric liquid crystals (CLCs), also known as helical liquid crystals, are arranged layer by layer, with the long axis of the liquid crystal molecules parallel to the plane of each layer. The direction of the long axis varies slightly between layers, resulting in a helical structure aligned along the layer normal. These characteristics characterize CLCs. This periodic helical structure imparts CLCs with optical properties such as optical rotation, selective reflection, and circular dichroism.

[0056] This embodiment uses the selective reflection effect of CLC. CLC will appear rainbow-colored when illuminated by white light. This is because certain wavelengths of light are selectively reflected by the CLC, and this reflection pattern follows the Bragg reflection law of the crystal.

[0057] As shown in Figure 7, when a beam of white light strikes different crystal faces, multiple reflections occur. The optical path difference is 2dcosφ, where d is the distance between the crystal layers and φ is the angle between the incident light and the crystal face normal. When the optical path difference is an integer multiple of the wavelength of the light, constructive interference occurs between the reflected light rays, which is the Bragg reflection law, as shown in the following formula: 2dcosφ = nλ (n is an integer).

[0058] Planar cholesteric liquid crystals (PTCLCs) exhibit the strongest selective reflection for the wavelength of incident light when visible light is incident along the helical axis of the liquid crystal. The reflection wavelength formula is λ = NP. When the incident light is incident at a certain angle θ, the incident wavelength is λ = NPcosθ. Where λ is the central wavelength of Bragg reflection, N is the average birefringence of the PTCLC—the average of the ordinary and extraordinary refractive indices of the liquid crystal—and P is the helical pitch of the PTCLC.

[0059] Specifically, the liquid crystal pattern 210 is a cholesteric liquid crystal, the chiral agent content of the cholesteric liquid crystal is greater than or equal to 2% and less than or equal to 4%, the monomer concentration is greater than or equal to 10% and less than or equal to 15%, and the initial reflection color of the cholesteric liquid crystal is adjusted to the blue-violet band.

[0060] When the chiral agent content of the cholesteric liquid crystal is less than or equal to 2% or greater than or equal to 4%, or when the monomer concentration is less than or equal to 10% and greater than or equal to 15%, the cholesteric liquid crystal reflects very little blue light, and the transmittance of red and green light is also small. Only when the chiral agent content of the cholesteric liquid crystal is greater than or equal to 2% and less than or equal to 4%, and the monomer concentration is greater than or equal to 10% and less than or equal to 15%, can the cholesteric liquid crystal achieve better transmission and reflection effects. Through a large number of experiments, the inventors found that when the chiral agent content of the cholesteric liquid crystal is 3.14% and the monomer concentration is 12%, and when the initial reflection color of the cholesteric liquid crystal is adjusted to the blue-violet band, the best transmission and reflection effect can be obtained.

[0061] In order to improve the overall color uniformity of the device, a high-frequency alternating current can be applied to the cholesteric liquid crystal before exposing it to ultraviolet light at 19.3 mW / cm2 for 4 minutes to weaken the texture state of the liquid crystal system.

[0062] Furthermore, the thickness of the liquid crystal pattern 210 is greater than or equal to 5 micrometers and less than or equal to 15 micrometers.

[0063] When the thickness of the liquid crystal pattern 210 is 5 microns or less, it is difficult to manufacture. When the thickness of the liquid crystal pattern 210 is 15 microns or greater, the thickness of the anti-reflection layer 200 is too large, resulting in an overall excessive thickness of the panel. Through extensive experiments, the inventors found that the best results are achieved when the liquid crystal pattern 210 is 10 microns thick.

[0064] The first substrate 240 and the second substrate 250 are transparent conductive film glass, and the thickness of the transparent conductive film glass is greater than or equal to 0.8 mm and less than or equal to 1.5 mm.

[0065] When no voltage is applied to the cholesteric liquid crystal, the device reflects light at a central wavelength of 453.6 nanometers and has a reflectivity of 85.5%. Meanwhile, the device transmits light at wavelengths of 520 nanometers and 630 nanometers with transmittances of approximately 86% and 88%, respectively. Since the transmittance of ordinary glass (UV encapsulation) is approximately 80%, conductive film glass was selected in this embodiment.

[0066] When the thickness of the transparent conductive film glass is less than or equal to 0.8 mm, it is difficult to manufacture. When the thickness of the transparent conductive film glass is greater than or equal to 1.5 mm, the thickness of the antireflection layer 200 is too large, resulting in an overall thick panel. Through extensive experiments, the inventors found that the best performance is achieved when the thickness of the conductive film glass is 1.1 mm.

[0067] In summary, the introduction of the liquid crystal pattern 210 increases the reflectivity of the blue light spectrum, reduces the transmittance of blue light, and increases the transmittance of red light and green light.

[0068] In one embodiment, as shown in Figure 3, the anti-reflection layer 200 includes a material film 220 and a third substrate 260, and the orthographic projection of the second sub-pixel 120 on the material film 220 is located within the material film 220, and the material film 220 is used to transmit light of the second color and reflect light of the first color.

[0069] The orthographic projection of the second sub-pixel 120 on the material film 220 is located within the material film 220, while the orthographic projection of the first sub-pixel 110 on the material film 220 is located outside the material film 220. Thus, the second sub-pixel 120 is shielded by the material film 220, while the first sub-pixel 110 is not. Furthermore, the material film 220 transmits the second color light and reflects the first color light. Therefore, with the help of the material film 220, purer light can be obtained.

[0070] Furthermore, the pixel unit 100 further includes a third sub-pixel 130 , which emits light of a third color. The orthographic projection of the third sub-pixel 130 on the material film 220 is located within the material film 220 , and the material film 220 is used to transmit light of the third color.

[0071] The second sub-pixel 120 and the third sub-pixel 130 are shielded by the material film 220, while the first sub-pixel 110 is not shielded by the material film 220. The material film 220 can transmit the second color light and the third color light and reflect the first color light. Therefore, the second color light and the third color light can become purer.

[0072] In combination with the above embodiments, in a quantum dot panel, the material film 220 can help obtain purer green light or red light, reduce noise in the green light or red light, and reduce the power consumption of the panel.

[0073] Through extensive experiments, the inventors have determined that the material film 220 is one or more of a MgF2 film, a ZnS film, a TiO2 film, or a SiO2 film. MgF2 film, ZnS film, TiO2 film, or SiO2 film all have excellent transmission and reflection capabilities for one color of light.

[0074] In this embodiment, there are multiple material films 220, and the multiple material films 220 and the third substrate 260 are sequentially disposed on the second sub-pixel 120. The MgF2 film, ZnS film, TiO2 film, or SiO2 film, when cooperatively disposed on the second sub-pixel 120, can achieve the function of transmitting light of one color and reflecting light of another color.

[0075] Preferably, the material film 220 includes a ZnS film and a MgF2 film, the thickness of the ZnS film is greater than or equal to 50 nanometers and less than or equal to 80 nanometers, and the thickness of the MgF2 film is greater than or equal to 80 nanometers and less than or equal to 150 nanometers.

[0076] The inventors have found through experiments that when the thickness of the ZnS film is less than or equal to 50 nanometers or greater than or equal to 80 nanometers, and when the thickness of the MgF2 film is less than or equal to 80 nanometers or greater than or equal to 150 nanometers, the transmittance of the ZnS film or the MgF2 film is low.

[0077] As shown in Figure 8, ZnS is a wide bandgap material with excellent mechanical and optical properties. MgF2 is a low-refractive index material (n=1.38) with good transmittance within the wavelength range of 120 to 8000 nanometers.

[0078] According to TFCalc thin-film design and analysis software, when the ZnS film thickness is 67.86 nanometers and the MgF2 film thickness is 119.14 nanometers, the reflectivity of the ZnS / MgF2 dual-layer anti-reflection and anti-reflection coating at wavelengths of 520 nanometers and 620 nanometers is approximately 1.2% and 2.1%, respectively. This dual-layer film effectively improves the transmittance of green light (G) (approximately 98.8%) and red light (R) (approximately 97.9%) in the device. Therefore, it is well-suited for sub-pixels emitting red or green light.

[0079] In summary, the introduction of the material film 220 increases the reflectivity of the blue light spectrum, reduces the transmittance of blue light, and increases the transmittance of red light and green light.

[0080] In one embodiment, as shown in Figure 4, the anti-reflection layer 200 includes a fourth substrate 270 and a nanocolumn 230 located on the side of the fourth substrate 270 close to the display layer, the orthographic projection of the second sub-pixel 120 on the fourth substrate 270 and the orthographic projection of the nanocolumn 230 on the fourth substrate 270 overlap, and the nanocolumn 230 is used to transmit light of the second color and reflect light of the first color.

[0081] The nanopillars 230 here can be ALN nanopillars. The orthographic projection of the second sub-pixel 120 on the nanopillars 230 is located within the nanopillars 230, while the orthographic projection of the first sub-pixel 110 on the nanopillars 230 is located outside the nanopillars 230. In this way, the second sub-pixel 120 is blocked by the nanopillars 230, while the first sub-pixel 110 is not blocked by the nanopillars 230. Furthermore, the liquid crystal pattern 210 is configured to transmit light of the second color and reflect light of the first color. Therefore, with the help of the nanopillars 230, the second sub-pixel 120 can emit purer light.

[0082] Furthermore, the inclination of the nanorods 230 is greater than or equal to 5° and less than or equal to 15°. The inventors have found through experiments that when the inclination of the nanorods 230 is less than or equal to 5° or greater than or equal to 15°, its reflectivity is greater.

[0083] Figures 9A and 9B show that, based on FDTD Solution simulation results, the tilted AlN nanopillar film exhibits lower reflectivity and higher transmittance compared to the dense AlN film. When the tilt angle of the AlN nanopillars is 10°, the maximum transmittance reaches 97.5%.

[0084] Figures 10A and 10B show the reflectivity and transmittance of ALN nanorods at different tilt angles for an output wavelength of 532 nanometers. The anti-reflection effect is optimal when the ALN nanorods are tilted at a 10° angle. The transmittance varies slightly across viewing angles, indicating stable performance.

[0085] Furthermore, the diameter of the nanopillars 230 is greater than or equal to 60 nanometers and less than or equal to 100 nanometers. The inventors have experimentally determined that when the diameter of the nanopillars 230 is less than or equal to 60 nanometers or greater than or equal to 100 nanometers, the reflectivity is greater. Furthermore, the inventors have found that when the diameter of the nanopillars 230 is 80 nanometers, a lower reflectivity can be achieved.

[0086] Meanwhile, the height of nanopillars 230 is greater than or equal to 200 nanometers and less than or equal to 300 nanometers. The inventors have experimentally determined that when the thickness of nanopillars 230 is less than or equal to 200 nanometers or greater than or equal to 300 nanometers, its reflectivity is higher. Furthermore, the inventors have found that when the thickness of nanopillars 230 is 260 nanometers, a lower reflectivity can be achieved.

[0087] Figure 11 shows the reflectivity and transmittance of ALN nanopillars at different tilt angles for an output wavelength of 532 nm. The anti-reflection effect is optimal when the ALN nanopillars are tilted at a 10° angle. Transmittance differences at different viewing angles are minimal, indicating stable performance.

[0088] Figure 12 shows the transmittance at 532 nm for different ALN nanorod thicknesses when the ALN tilt angle is 10°. Simulation results show that the highest transmittance is achieved when the thickness is 260 nm.

[0089] 13A and 13B simulate the effect of ALN nanopillar diameter on transmittance when the ALN tilt angle is 10° and the thickness is 260 nm. The simulation results show that when the ALN nanopillar diameter is 80 nm, the film transmittance reaches a maximum of 98.5%.

[0090] Reference Figures 13A and 13B are diagrams of the system device for the tilted angle deposition technology and the working principle of the tilted growth, respectively. During the film preparation process, it is necessary to ensure that α is as large as possible. For magnetron sputtering, it is necessary to ensure that α is greater than 70° to ensure that the prepared films have obvious tilted nanocolumns. Inclined growth is the shadow effect. Due to the deposition angle, some of the sputtered atoms successfully reach the substrate surface, while the other part of the sputtered atoms collide and cannot reach the substrate surface in a straight line, forming a sputtering blind area. As a result, the atoms cannot be closely arranged into a dense film, and a nanocolumn film with obvious gaps is formed.

[0091] In summary, the introduction of the nanorods 230 increases the reflectivity of the blue light spectrum, reduces the transmittance of blue light, and increases the transmittance of green light.

[0092] This application also provides an electronic device including the display panel described in the above embodiments. Therefore, the electronic device includes all embodiments of the display panel described above, and any infringement of the display panel described in the above embodiments falls within the protection scope of this electronic device.

[0093] In this application, the structural embodiments and method embodiments may complement each other if they do not conflict.

[0094] In this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. The terms "plurality" and "several" refer to two or more, unless otherwise clearly defined.

[0095] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present application that fall within the general scope of this application and include common knowledge or customary techniques in the art not disclosed herein. The description and examples are to be considered as exemplary only, and the true scope and spirit of the present application are indicated by the following claims.

[0096] It should be understood that the present application is not limited to the exact structures described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.

Claims

1. A display panel, characterized in that: include: A display layer, the display layer comprising a plurality of pixel units, the plurality of pixel units comprising a first sub-pixel and a second sub-pixel, the first sub-pixel emitting light of a first color, and the second sub-pixel emitting light of a second color; An anti-reflection layer is disposed on the light-emitting side of the second sub-pixel, and is used for transmitting light of the second color and reflecting light of the first color.

2. The display panel according to claim 1, wherein: The anti-reflection layer includes a first substrate, a second substrate, and a liquid crystal pattern arranged between the first substrate and the second substrate, the orthographic projection of the liquid crystal pattern on the first substrate overlaps with the orthographic projection of the second sub-pixel on the first substrate, and has no overlap with the orthographic projection of the first sub-pixel on the first substrate, and the liquid crystal pattern is configured to transmit light of a second color and reflect light of a first color.

3. The display panel according to claim 2, wherein: The pixel unit further includes a third sub-pixel, which emits light of a third color. The orthographic projection of the third sub-pixel on the liquid crystal pattern is located within the liquid crystal pattern. The liquid crystal pattern is configured to transmit light of the third color and reflect light of the first color.

4. The display panel according to claim 2, wherein: The liquid crystal pattern is a cholesteric liquid crystal, the chiral agent content of the cholesteric liquid crystal is greater than or equal to 2% and less than or equal to 4%, the monomer concentration is greater than or equal to 10% and less than or equal to 15%, and the initial reflection color of the cholesteric liquid crystal is adjusted to the blue-violet band.

5. The display panel according to claim 2, wherein: The thickness of the liquid crystal pattern is greater than or equal to 5 micrometers and less than or equal to 15 micrometers.

6. The display panel according to claim 2, wherein: The first substrate and the second substrate are transparent conductive film glass, and the thickness of the transparent conductive film glass is greater than or equal to 0.8 mm and less than or equal to 1.5 mm.

7. The display panel according to claim 1, wherein: The anti-reflection layer includes a third substrate and a material film on the side of the third substrate close to the display layer, the orthographic projection of the material film on the third substrate overlaps with the orthographic projection of the second sub-pixel on the first substrate, and the material film is used to transmit light of the second color and reflect light of the first color.

8. The display panel according to claim 7, wherein: The pixel unit further includes a third sub-pixel, which emits light of a third color. The orthographic projection of the third sub-pixel on the material film is located within the material film, and the material film is used to transmit light of the third color.

9. The display panel according to claim 7, wherein: There are multiple material films, and the multiple material films and the third substrate are sequentially covered on the second sub-pixel.

10. The display panel according to claim 9, wherein: The material film is one or more of a MgF2 film, a ZnS film, a TiO2 film or a SiO2 film.

11. The display panel according to claim 10, wherein: The material film includes a ZnS film and a MgF2 film, the thickness of the ZnS film is greater than or equal to 50 nanometers and less than or equal to 80 nanometers, and the thickness of the MgF2 film is greater than or equal to 80 nanometers and less than or equal to 150 nanometers.

12. The display panel according to claim 1, wherein: The anti-reflection layer includes a fourth substrate and a nanocolumn located on a side of the fourth substrate close to the display layer, the orthographic projection of the second sub-pixel on the fourth substrate overlaps with the orthographic projection of the nanocolumn on the fourth substrate, and the nanocolumn is used to transmit light of a second color and reflect light of a first color.

13. The display panel according to claim 12, wherein: The inclination of the nanocolumn is greater than or equal to 5° and less than or equal to 15°, the diameter of the nanocolumn is greater than or equal to 60 nanometers and less than or equal to 100 nanometers, and the height of the nanocolumn is greater than or equal to 200 nanometers and less than or equal to 300 nanometers.

14. The display panel according to claim 1, wherein: The display layer includes a circuit layer, a light-emitting layer, a packaging layer, a scattering particle layer, and a color filter layer arranged in sequence, wherein the light-emitting layer includes a plurality of blue light sources, and the color filter layer includes a blue color filter corresponding to the first sub-pixel and a red color filter or a green color filter corresponding to the second sub-pixel; The display layer further includes a quantum dot conversion layer corresponding to the second sub-pixel, and the quantum dot conversion layer is a red quantum dot conversion film or a green quantum dot conversion film.

15. An electronic device, characterized in that: A display panel comprising any one of claims 1-14.

Images