Display panel and display device

Abstract

Disclosed in embodiments of the present application is a display panel, comprising: a plurality of light-emitting devices, wherein the light-emitting devices are configured to emit blue light; a color conversion layer provided on the side of the light-emitting devices distant from a substrate; and a transparent conductive layer provided on the side of the color conversion layer distant from the substrate, wherein the transmittance of the transparent conductive layer for blue light is lower than the transmittance of the transparent conductive layer for red light and green light, and the transparent conductive layer is configured as an auxiliary cathode for the plurality of light-emitting devices.

Description

Display panels and display devices

[0001] This application claims priority to Chinese patent application No. 202510142165.0, filed on February 8, 2025, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of display technology, specifically to a display panel and display device. Background Technology

[0003] In existing LED display panels, blue LED devices are typically used to emit blue light to excite quantum dot color conversion materials to present high-purity three primary colors, with the conversion efficiencies of red quantum dots and green quantum dots being 45% and 44.6%, respectively.

[0004] In the process of researching and practicing existing technologies, the inventors of this application discovered that during the color conversion process, blue light inevitably passes through the quantum dot color conversion layer, causing blue light leakage and resulting in a decrease in display effect. Invention Overview

[0005] This application provides a display panel and display device that can reduce the risk of blue light leakage and improve display performance.

[0006] In a first aspect, embodiments of this application provide a display panel, which includes:

[0007] substrate;

[0008] Multiple light-emitting devices are disposed on the substrate, and the light-emitting devices are configured to emit blue light;

[0009] A color conversion layer is disposed on the side of the light-emitting device away from the substrate; and

[0010] A transparent conductive layer is disposed on the side of the color conversion layer away from the substrate. The transmittance of the transparent conductive layer to blue light is less than the transmittance of the transparent conductive layer to red light and green light. The transparent conductive layer is configured as an auxiliary cathode for a plurality of light-emitting devices.

[0011] Secondly, embodiments of this application also provide a display device, which includes a display panel as described in any of the above embodiments. Attached Figure Description

[0012] Figure 1 is a schematic diagram of the structure of the display panel provided in an embodiment of this application;

[0013] Figure 2 is a schematic diagram of another structure of the display panel provided in an embodiment of this application. Embodiments of the present invention

[0014] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application. In addition, it should be understood that the specific implementation methods described herein are only for illustration and explanation of this application and are not intended to limit this application. In this application, the embodiments can be combined with each other but will not be described in detail one by one. Unless otherwise stated, the directional terms such as "upper" and "lower" generally refer to the upper and lower in the actual use or working state of the device, specifically the drawing direction in the accompanying drawings; while "inner" and "outer" refer to the outline of the device; the terms "first", "second", "third", etc. are only used as markings and do not impose numerical requirements or establish a sequence.

[0015] This application provides a display panel and a display device, which will be described in detail below.

[0016] This application provides a display panel, which includes:

[0017] substrate;

[0018] Multiple light-emitting devices are disposed on the substrate, and the light-emitting devices are configured to emit blue light;

[0019] A color conversion layer is disposed on the side of the light-emitting device away from the substrate; and

[0020] A transparent conductive layer is disposed on the side of the color conversion layer away from the substrate. The transmittance of the transparent conductive layer to blue light is less than the transmittance of the transparent conductive layer to red light and green light. The transparent conductive layer is configured as an auxiliary cathode for a plurality of light-emitting devices.

[0021] Optionally, in some embodiments of this application, the band gap of the transparent conductive layer is between 3.5 eV and 4.3 eV.

[0022] Optionally, in some embodiments of this application, the thickness tolerance of the transparent conductive layer is less than or equal to 25 nanometers.

[0023] Optionally, in some embodiments of this application, the display panel further includes an inorganic protective layer that covers and encapsulates the color conversion layer and is located on the side of the transparent conductive layer near the substrate.

[0024] Optionally, in some embodiments of this application, the thickness tolerance of the inorganic protective layer is less than or equal to 5 nanometers.

[0025] Optionally, in some embodiments of this application, the display panel further includes a color filter layer disposed on the side of the transparent conductive layer away from the substrate, the color filter layer including a first filter portion and a second filter portion; the color conversion layer includes a first color conversion portion and a second color conversion portion, the color of the first filter portion is consistent with the color of the light excited by the first color conversion portion, and the color of the second filter portion is consistent with the color of the light excited by the second color conversion portion;

[0026] The first filter is disposed on the light-emitting side of the first color conversion unit, and the second filter is disposed on the light-emitting side of the second color conversion unit.

[0027] Optionally, in some embodiments of this application, the first filter section is provided with a first photoluminescent material configured to absorb blue light, and the color of the light excited by the first photoluminescent material is consistent with the color of the light excited by the first color conversion section; the second filter section is provided with a second photoluminescent material configured to absorb blue light, and the color of the light excited by the second photoluminescent material is consistent with the color of the light excited by the second color conversion section.

[0028] Optionally, in some embodiments of this application, the refractive index of the inorganic protective layer is less than the refractive index of the transparent conductive layer.

[0029] Optionally, in some embodiments of this application, the light-emitting surfaces of the first color conversion section and the second color conversion section are convex arc surfaces, and the areas of the inorganic protective layer covering the first color conversion section and the second color conversion section each form a first convex arc section.

[0030] Optionally, in some embodiments of this application, the portion of the transparent conductive layer covering the first convex arc portion of the inorganic protective layer forms a second convex arc portion.

[0031] Optionally, in some embodiments of this application, the first color conversion unit is configured to absorb blue light to excite red light, the second color conversion unit is configured to absorb blue light to excite green light, the color conversion layer further includes a transparent portion, one of the transparent portions is disposed on the side of the light-emitting device away from the substrate, the display panel further includes a pixel definition layer disposed on the substrate, the pixel definition layer has a plurality of first openings, one of the light-emitting devices is disposed in one of the first openings, and any one of the first color conversion unit, the second color conversion unit, and the transparent portion is correspondingly disposed in one of the first openings and covers the light-emitting device;

[0032] The color filter layer further includes a black matrix layer and a third filter layer. The first filter layer is a red filter layer, the second filter layer is a green filter layer, and the third filter layer is a blue filter layer. The third filter layer is disposed on the side of the transparent portion away from the substrate.

[0033] The black matrix layer has multiple second openings, and the black matrix layer is correspondingly disposed on the side of the pixel definition layer away from the substrate. Any one of the first filter, the second filter, and the third filter is correspondingly disposed in a second opening.

[0034] Accordingly, this application also provides a display device, which includes a display panel as described in any of the above embodiments.

[0035] The display panel of this application embodiment includes a plurality of light-emitting devices, which are configured to emit blue light; a color conversion layer is disposed on the side of the light-emitting devices away from the substrate; a transparent conductive layer is disposed on the side of the color conversion layer away from the substrate, the transmittance of the transparent conductive layer to blue light is less than the transmittance of the transparent conductive layer to red light and green light, and the transparent conductive layer is configured as an auxiliary cathode for the plurality of light-emitting devices.

[0036] The display panel of this application reduces the blue light transmittance by setting a transparent conductive layer on the color conversion layer, thereby reducing the risk of blue light leakage and improving the display effect. In addition, the transparent conductive layer serves as an auxiliary cathode for multiple light-emitting devices, reducing the voltage drop of the light-emitting devices and shielding them from external signal interference.

[0037] It should be noted that the order of description of the following embodiments is not intended to limit the preferred order of the embodiments.

[0038] Referring to Figure 1, this application embodiment provides a display panel 100, which includes a substrate 11, a light-emitting device 12, a color conversion layer 13, and a transparent conductive layer 14.

[0039] Multiple light-emitting devices 12 are disposed on a substrate 11. The light-emitting devices 12 are configured to emit blue light. A color conversion layer 13 is disposed on the side of the light-emitting devices 12 away from the substrate 11. A transparent conductive layer 14 is disposed on the side of the color conversion layer 13 away from the substrate 11. The transmittance of the transparent conductive layer 14 to blue light is less than its transmittance to red and green light. The transparent conductive layer 14 is configured as an auxiliary cathode for the multiple light-emitting devices 12.

[0040] It is understandable that the transparent conductive layer 14 has a lower transmittance for blue light than for red and green light, resulting in a lower proportion of blue light transmission among the three colors. Based on this, the display panel 100 of this embodiment reduces the blue light transmittance by providing a transparent conductive layer 14 on the color conversion layer 13, thereby reducing the risk of blue light leakage and improving the display effect. Furthermore, the transparent conductive layer 14 serves as an auxiliary cathode for the multiple light-emitting devices 12, reducing the voltage drop of the light-emitting devices 12 and shielding them from external signal interference.

[0041] Optionally, substrate 11 may be a driving circuit board including thin-film transistors. Substrate 11 is configured to drive light-emitting device 12 to emit light.

[0042] Optionally, the light-emitting device 12 can be a miniature light-emitting diode or a sub-millimeter-sized light-emitting diode.

[0043] Optionally, the color conversion layer 13 can be an upconversion luminescent material, such as a fluorescent material, perovskite material, or quantum dot material. This embodiment uses a quantum dot material as an example of color conversion layer 13, but is not limited thereto.

[0044] Optionally, the transparent conductive layer 14 may be made of metal oxide materials, such as indium tin oxide or indium zinc oxide.

[0045] Optionally, the transmittance of blue, red, and green light can be adjusted by changing the proportion of metal oxides in the transparent conductive layer 14.

[0046] Optionally, the light transmittance of the transparent conductive layer 14 is greater than or equal to 90% to avoid the light emission efficiency of the display panel 100 being too low. The light transmittance of the transparent conductive layer 14 can be 90%, 91%, 92%, 93%, 94%, 95%, or 96%, etc.

[0047] Optionally, in some embodiments of this application, the band gap of the transparent conductive layer 14 is between 3.5 eV and 4.3 eV.

[0048] Understandably, the size of the band gap determines whether electrons can be excited from the valence band to the conduction band to participate in electrical conduction. When the energy of a photon is greater than the band gap, electrons in the valence band can be excited to the conduction band. Since the energy of blue photons is approximately between 2.5 eV and 3.1 eV, which is close to or slightly smaller than the band gap of the transparent conductive layer 14, some blue photons can be absorbed and excited to excite electrons. However, the energy of green and red photons is lower and insufficient to excite electrons in the valence band of the transparent conductive layer to the conduction band; therefore, most green and red light can pass through the transparent conductive layer 14.

[0049] Optionally, in some embodiments of this application, the transparent conductive layer 14 is grounded to reduce the impact of electrons generated by its absorption of blue light on the light-emitting device 12, and to make the transparent conductive layer 14 have better electrical shielding and antistatic effects.

[0050] Optionally, in some embodiments of this application, the thickness tolerance of the transparent conductive layer 14 is less than or equal to 25 nanometers.

[0051] It is understandable that thickness tolerance refers to the difference between the maximum and minimum thickness of the film layer. The smaller the thickness tolerance, the better the thickness uniformity of the film layer. A film layer with good thickness uniformity can improve light leakage. For example, poor thickness uniformity means that the film layer is likely to have more uneven structures, and these uneven structures can easily increase the light emission angle and cause scattering, resulting in large-angle light leakage. Therefore, the thickness tolerance of the transparent conductive layer 14 is set to be less than or equal to 25 nanometers to improve the thickness uniformity of the transparent conductive layer 14, thereby reducing the risk of large-angle light leakage.

[0052] Optionally, the thickness uniformity of the transparent conductive layer 14 can be further improved by adjusting the process of preparing the transparent conductive layer 14. For example, by using vacuum sputtering, the growth rate, quality and uniformity of the transparent conductive layer 14 can be further optimized by precisely adjusting parameters such as sputtering power and working gas pressure, so that the thickness tolerance of the transparent conductive layer 14 is less than or equal to 15 nanometers.

[0053] Optionally, the thickness tolerance of the transparent conductive layer 14 can be 25 nanometers, 20 nanometers, 15 nanometers, 10 nanometers or 5 nanometers.

[0054] Optionally, the thickness of the transparent conductive layer 14 is between 155 nanometers and 205 nanometers, for example, it can be 155 nanometers, 160 nanometers, 165 nanometers, 170 nanometers, 175 nanometers, 180 nanometers, 185 nanometers, 195 nanometers, 200 nanometers or 205 nanometers.

[0055] It should be noted that the process flow is described using an indium tin oxide film as the transparent conductive layer 14 as an example, as follows:

[0056] First, select a suitable indium tin oxide target.

[0057] Then, in a vacuum environment, the indium tin oxide target material is deposited onto the inorganic protective layer 15 by sputtering or laser ablation. The film thickness is controlled by precisely adjusting parameters such as sputtering power and working gas pressure, and monitoring the deposition time.

[0058] Next, the film is subjected to heat treatment or plasma treatment to improve its electrical conductivity and light transmittance. Improving the electrical conductivity of the ITO film can enhance its conductivity in electronic devices, allowing current to pass through more smoothly, thereby reducing energy consumption and improving device response speed and efficiency.

[0059] Finally, surface analysis instruments were used to test the uniformity and optical properties of the film to ensure that the thickness uniformity and light transmittance of the ITO film layer met the standards.

[0060] Optionally, in some embodiments of this application, the display panel 100 further includes an inorganic protective layer 15, which covers the encapsulated color conversion layer 13 and is located on the side of the transparent conductive layer 14 near the substrate 11.

[0061] Understandably, an inorganic protective layer 15 is used to encapsulate the color conversion layer 13 to protect it from oxidation. The inorganic protective layer 15 can improve the optical stability and photon yield of quantum dots, while enhancing their dispersibility and stability in solution, preventing aggregation and precipitation, thereby indirectly reducing light leakage.

[0062] Optionally, the material of the inorganic protective layer 15 may include silicon oxide, aluminum oxide, titanium oxide, or magnesium oxide, etc.

[0063] Optionally, in some embodiments of this application, the thickness tolerance of the inorganic protective layer 15 is less than or equal to 5 nanometers, such as 5 nanometers, 4 nanometers, 3 nanometers, 2 nanometers or 1 nanometer, etc.

[0064] Understandably, the thickness tolerance of the inorganic protective layer 15 is less than or equal to 5 nanometers in order to improve the thickness uniformity of the inorganic protective layer 15 and thus reduce the risk of light leakage at large angles.

[0065] Optionally, the thickness of the inorganic protective layer 15 is between 20 nanometers and 30 nanometers, for example, it can be 20 nanometers, 21 nanometers, 22 nanometers, 23 nanometers, 24 nanometers, 25 nanometers, 26 nanometers, 27 nanometers, 28 nanometers, 29 nanometers or 30 nanometers.

[0066] It should be noted that the process flow is described using a silicon oxide film as the inorganic protective layer 15 as an example, as follows:

[0067] Silicon oxide is deposited on the color conversion layer 13 using either chemical vapor deposition or physical vapor deposition. Deposition is performed in a vacuum or atmospheric environment, with parameters such as temperature, pressure, and gas flow rate controlled, and deposition time monitored to control film thickness. Next, the film is heat-treated to improve film performance and relieve stress, thereby enhancing film properties and stability. Finally, film thickness is measured and surface treatment is performed; if necessary, surface planarization can be carried out to further improve film thickness uniformity.

[0068] Optionally, in some embodiments of this application, the display panel 100 further includes a color filter layer 16 disposed on the side of the transparent conductive layer 14 away from the substrate 11. The color filter layer 16 includes a first light filter portion 161 and a second light filter portion 162. The color conversion layer 13 includes a first color conversion portion 131 and a second color conversion portion 132. The color of the first light filter portion 161 is consistent with the color of the light excited by the first color conversion portion 131. The color of the second light filter portion 162 is consistent with the color of the light excited by the second color conversion portion 132.

[0069] The first filter 161 is disposed on the light-emitting side of the first color conversion unit 131, and the second filter 162 is disposed on the light-emitting side of the second color conversion unit 132.

[0070] It is understood that the first filter portion 161 and the second filter portion 162 are both non-blue in color, so the first filter portion 161 and the second filter portion 162 can block and / or absorb blue light to reduce the risk of blue light leakage.

[0071] Optionally, the first filter 161 is a red filter and the second filter 162 is a green filter.

[0072] Optionally, in some embodiments of this application, the first color conversion section 131 is configured to absorb blue light and excite red light. The second color conversion section 132 is configured to absorb blue light and excite green light. The color conversion layer 13 also includes a transparent section 133, which is disposed on the side of the light-emitting device 12 away from the substrate 11.

[0073] Understandably, a transparent portion 133 is used to cover the light-emitting device 12 to form a blue-light-emitting device, a first color conversion portion 131 is used to cover the light-emitting device 12 to form a red-light-emitting device, and a second color conversion portion 132 is used to cover the light-emitting device 12 to form a green-light-emitting device. Subsequently, a first filter portion 161 is used corresponding to the first color conversion portion 131 to filter out light of colors other than red light, thereby reducing the emission of non-red light and reducing the leakage of blue light, thus improving the luminous purity of the red light device. Similarly, a second filter portion 162 is used corresponding to the second color conversion portion 132 to filter out light of colors other than green light, thereby reducing the emission of non-green light and reducing the leakage of blue light, thus improving the luminous purity of the green light device.

[0074] Optionally, in some embodiments of this application, the display panel 100 further includes a pixel definition layer 17 disposed on the substrate 11, the pixel definition layer 17 having a plurality of first openings 171. A light-emitting device 12 is disposed within a first opening 171. Any one of a first color conversion part 131, a second color conversion part 132, and a transparent part 133 is correspondingly disposed within a first opening 171 and covers the light-emitting device 12.

[0075] The pixel definition layer 17 reduces the risk of mutual interference between the color conversion units 131. Optionally, the pixel definition layer 17 can be a black pixel definition layer 17 to reduce the risk of crosstalk between the colored lights of adjacent pixels.

[0076] Optionally, a reflective layer may be formed on the sidewall of the first opening 171 to reduce the risk of crosstalk between the color lights of adjacent pixels while improving the utilization of light.

[0077] Optionally, in some embodiments of this application, the color filter layer 16 further includes a black matrix layer 164 and a third filter portion 163. The third filter portion 163 is a blue filter portion. The third filter portion 163 is disposed on the side of the transparent portion 133 away from the substrate 11.

[0078] The black matrix layer 164 has a plurality of second openings 16a. The black matrix layer 164 is disposed on the side of the pixel definition layer 17 away from the substrate 11. Any one of the first filter part 161, the second filter part 162 and the third filter part 163 is disposed in a second opening 16a.

[0079] Understandably, the black matrix layer 164 can absorb light at large angles, absorbing the large-angle blue light leaked from red and green light devices while further reducing the risk of light crosstalk.

[0080] Optionally, in some embodiments of this application, a first photoluminescent material configured to absorb blue light is disposed in the first filter section 161, and the color of the light excited by the first photoluminescent material is the same as the color of the light excited by the first color conversion section 131. A second photoluminescent material configured to absorb blue light is disposed in the second filter section 162, and the color of the light excited by the second photoluminescent material is the same as the color of the light excited by the second color conversion section 132.

[0081] Understandably, by providing a first photoluminescent material in the first filter section 161, the blue light leaking from the first color conversion section 131 can be converted into red light, thereby reducing blue light leakage and improving the light extraction efficiency of the red light device. Similarly, by providing a second photoluminescent material in the second filter section 162, the blue light leaking from the second color conversion section 132 can be converted into green light, thereby reducing blue light leakage and improving the light extraction efficiency of the green light device.

[0082] Alternatively, the photoluminescent material can be phosphor, perovskite, or quantum dot, etc.

[0083] Optionally, in some embodiments of this application, the refractive index of the inorganic protective layer 15 is less than the refractive index of the transparent conductive layer 14.

[0084] It is understandable that the refractive index of the inorganic protective layer 15 is less than that of the transparent conductive layer 14, which reduces the exit angle of light when it enters the transparent conductive layer 14 from the inorganic protective layer 15, thereby reducing the risk of large-angle blue light leakage and allowing more light to radiate into the second opening 16a, thus improving the light extraction efficiency and blue light conversion efficiency.

[0085] Optionally, in some embodiments of this application, based on the low refractive index of the inorganic protective layer 15, the inorganic protective layer 15 and the transparent conductive layer 14 are stacked to form a Bragg reflection structure, which is configured to reflect a certain wavelength of the blue light band to reduce the risk of blue light leakage.

[0086] It should be noted that the refractive index and thickness of the inorganic protective layer 15 and the transparent conductive layer 14 can be adjusted to achieve the reflection of a certain wavelength in the blue light band.

[0087] Figure 2 shows another structural schematic diagram of the display panel 100 according to an embodiment of this application. In Figure 2, the parts that differ from the above embodiments will be described to avoid redundant explanation.

[0088] It should be noted that the difference between the embodiment corresponding to Figure 2 and the embodiment corresponding to Figure 1 lies in the shape of the light-emitting surface of the color conversion layer 13.

[0089] In Figure 2, in some embodiments of this application, the light-emitting surfaces of the first color conversion section 131 and the second color conversion section 132 are convex arc surfaces. The inorganic protective layer 15 covers the areas of the first color conversion section 131 and the second color conversion section 132, respectively forming a first convex arc section 15a.

[0090] Understandably, the setting of the first convex arc portion 15a reduces the emission angle of light, decreases the risk of large-angle blue light leakage, and allows more light to radiate into the second opening 16a, thereby improving the light emission efficiency and blue light conversion efficiency.

[0091] Optionally, the light-emitting surface of the transparent portion 133 is also a convex arc surface. The area of ​​the transparent portion 133 covered by the inorganic protective layer 15 also forms a first convex arc portion 15a, which reduces the risk of blue light crosstalk and narrows the emission angle of blue light, reduces the risk of leakage of large-angle blue light, and at the same time allows more light to radiate into the second opening 16a, thereby improving the light emission efficiency.

[0092] Optionally, in some embodiments of this application, the portion of the transparent conductive layer 14 covering the first convex arc portion 15a of the inorganic protective layer 15 forms a second convex arc portion 14a.

[0093] Understandably, the setting of the second convex arc portion 14a reduces the emission angle of light, decreases the risk of large-angle blue light leakage, and allows more light to radiate into the second opening 16a, thereby improving the light emission efficiency and blue light conversion efficiency.

[0094] Accordingly, this application also provides a display device, which includes a display panel as described in any of the above embodiments.

[0095] The display panel 100 in the display device of this application embodiment includes a plurality of light-emitting devices 12, which are configured to emit blue light. A color conversion layer is disposed on the side of the light-emitting device 12 away from the substrate 11. A transparent conductive layer is disposed on the side of the color conversion layer 13 away from the substrate 11. The transmittance of the transparent conductive layer 14 to blue light is less than the transmittance of the transparent conductive layer 14 to red and green light, and the transparent conductive layer 14 is configured as an auxiliary cathode for the plurality of light-emitting devices 12.

[0096] The display device of this application embodiment reduces the blue light transmittance by providing a transparent conductive layer 14 on the color conversion layer 13, thereby reducing the risk of blue light leakage and improving the display effect. In addition, the transparent conductive layer 14 serves as an auxiliary cathode for the multiple light-emitting devices 12, which can reduce the voltage drop of the light-emitting devices 12 and shield interference from external signals.

[0097] The above provides a detailed description of a display panel and display device provided in the embodiments of this application. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A display panel, comprising: substrate; Multiple light-emitting devices are disposed on the substrate, and the light-emitting devices are configured to emit blue light; A color conversion layer is disposed on the side of the light-emitting device away from the substrate; as well as A transparent conductive layer is disposed on the side of the color conversion layer away from the substrate. The transmittance of the transparent conductive layer to blue light is less than the transmittance of the transparent conductive layer to red light and green light. The transparent conductive layer is configured as an auxiliary cathode for a plurality of light-emitting devices.

2. The display panel according to claim 1, wherein, The band gap of the transparent conductive layer is between 3.5 eV and 4.3 eV.

3. The display panel according to claim 2, wherein, The thickness tolerance of the transparent conductive layer is less than or equal to 25 nanometers.

4. The display panel according to claim 3, wherein, The thickness tolerance of the transparent conductive layer is less than or equal to 15 nanometers.

5. The display panel according to claim 2, wherein, The light transmittance of the transparent conductive layer is greater than or equal to 90%.

6. The display panel according to claim 2, wherein, The transparent conductive layer is grounded.

7. The display panel according to claim 2, wherein, The display panel further includes an inorganic protective layer that covers and encapsulates the color conversion layer and is located on the side of the transparent conductive layer near the substrate.

8. The display panel according to claim 7, wherein, The thickness tolerance of the inorganic protective layer is less than or equal to 5 nanometers.

9. The display panel according to claim 7, wherein, The display panel further includes a color filter layer disposed on the side of the transparent conductive layer away from the substrate, the color filter layer including a first filter portion and a second filter portion; the color conversion layer includes a first color conversion portion and a second color conversion portion, the color of the first filter portion is consistent with the color of the light excited by the first color conversion portion, and the color of the second filter portion is consistent with the color of the light excited by the second color conversion portion. The first filter is disposed on the light-emitting side of the first color conversion unit, and the second filter is disposed on the light-emitting side of the second color conversion unit.

10. The display panel according to claim 9, wherein, The first filter section contains a first photoluminescent material configured to absorb blue light, and the color of the light emitted by the first photoluminescent material is the same as the color of the light emitted by the first color conversion section; the second filter section contains a second photoluminescent material configured to absorb blue light, and the color of the light emitted by the second photoluminescent material is the same as the color of the light emitted by the second color conversion section.

11. The display panel according to claim 10, wherein, The refractive index of the inorganic protective layer is less than that of the transparent conductive layer.

12. The display panel according to claim 10, wherein, The light-emitting surfaces of the first color conversion section and the second color conversion section are convex arc surfaces, and the areas of the inorganic protective layer covering the first color conversion section and the second color conversion section each form a first convex arc section.

13. The display panel according to claim 12, wherein, The portion of the transparent conductive layer that covers the first convex arc portion of the inorganic protective layer forms the second convex arc portion.

14. The display panel according to any one of claims 9-13, wherein, The first color conversion unit is configured to absorb blue light and excite red light, and the second color conversion unit is configured to absorb blue light and excite green light. The color conversion layer further includes a transparent portion, one of which is disposed on the side of the light-emitting device away from the substrate. The display panel further includes a pixel definition layer disposed on the substrate. The pixel definition layer has a plurality of first openings, and the light-emitting device is disposed in one of the first openings. Any one of the first color conversion unit, the second color conversion unit, and the transparent portion is correspondingly disposed in one of the first openings and covers the light-emitting device. The color filter layer further includes a black matrix layer and a third filter layer. The first filter layer is a red filter layer, the second filter layer is a green filter layer, and the third filter layer is a blue filter layer. The third filter layer is disposed on the side of the transparent portion away from the substrate. The black matrix layer has multiple second openings, and the black matrix layer is correspondingly disposed on the side of the pixel definition layer away from the substrate. Any one of the first filter, the second filter, and the third filter is correspondingly disposed in a second opening.

15. A display device, comprising a display panel, the display panel comprising: substrate; Multiple light-emitting devices are disposed on the substrate, and the light-emitting devices are configured to emit blue light; A color conversion layer is disposed on the side of the light-emitting device away from the substrate; as well as A transparent conductive layer is disposed on the side of the color conversion layer away from the substrate. The transmittance of the transparent conductive layer to blue light is less than the transmittance of the transparent conductive layer to red light and green light. The transparent conductive layer is configured as an auxiliary cathode for a plurality of light-emitting devices.

16. The display device according to claim 15, wherein, The band gap of the transparent conductive layer is between 3.5 eV and 4.3 eV.

17. The display device according to claim 16, wherein, The thickness tolerance of the transparent conductive layer is less than or equal to 15 nanometers.

18. The display device according to claim 16, wherein, The transparent conductive layer is grounded.

19. The display device according to claim 16, wherein, The display panel further includes an inorganic protective layer that covers and encapsulates the color conversion layer and is located on the side of the transparent conductive layer near the substrate.

20. The display device according to claim 19, wherein, The refractive index of the inorganic protective layer is less than that of the transparent conductive layer.

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