Display panel

Abstract

A display area of the display panel comprises a first area and a second area, each of the first area and the second area is provided with a plurality of pixels, and a light sensing device is arranged in the first area. A first sub-region between at least two pixels in the first region is provided with a first opening, the first opening penetrates through a first part of film layer of the display panel, and light emitted to the light sensing device from the external environment of the display panel penetrates through the first opening. A second hole is formed in the second sub-region between at least two pixels in the second region, the second hole penetrates through a second part of the film layer of the display panel, and the metal wire located in the second sub-region is arranged outside the second hole under the view angle of overlooking the display panel. The second opening is formed in the second area, and the metal wiring layout is optimized, so that the first area and the second area have similar optical characteristics in a screen-off state, and the visual difference between the two areas is eliminated.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of display, in particular to a display panel. BACKGROUND

[0002] A conventional Pol less organic light-emitting diode (OLED) display panel is integrated with a light sensor device, and a light transmission area is arranged at a position corresponding to the light sensor device in the OLED display panel. The light transmission area is usually arranged on at least one side of a camera hole of the OLED display panel. The light transmission area is provided with an opening, and the opening penetrates through light-absorbing film layers such as a light shielding layer and a pixel definition layer to transmit light.

[0003] When the OLED display panel is in a screen-off state, there is a significant visual effect difference between the light transmission area of the OLED display panel and the area other than the light transmission area in the display area of the OLED display panel, which affects the visual consistency and aesthetics of the OLED display panel as a whole, resulting in poor user experience.

[0004] Therefore, it is necessary to provide a new technical solution to solve the above technical problems. SUMMARY

[0005] An embodiment of the present application provides a display panel, which aims to solve the technical problem that the light transmission area of the display panel has a significant visual effect difference with the area other than the light transmission area in the display area of the display panel when the display panel is in a screen-off state.

[0006] An embodiment of the present application provides a display panel, which aims to solve the technical problem that the light transmission area of the display panel has a significant visual effect difference with the area other than the light transmission area in the display area of the display panel when the display panel is in a screen-off state.

[0007] In the above display panel, at least one metal trace in the second sub-area is interrupted at the second opening under the viewing angle of the display panel.

[0008] In the display panel, at least one of the metal traces in the second sub-region bypasses the second opening at a viewing angle looking down on the display panel.

[0009] In the display panel, at least one of the metal traces in a part of the second sub-region bypasses the second opening, and at least one of the metal traces in another part of the second sub-region passes through the second opening at a viewing angle looking down on the display panel.

[0010] In the display panel, at least one of the metal traces in a part of the second sub-region is interrupted at the second opening, and at least one of the metal traces in another part of the second sub-region passes through the second opening at a viewing angle looking down on the display panel.

[0011] In the display panel, the first part of the film layer and the second part of the film layer each at least include an optical shielding layer and a pixel defining layer.

[0012] In the display panel, the second opening is filled with a light-transmitting material, and the light-transmitting material has a light transmittance substantially equal to that of the display panel in the first sub-region.

[0013] In the display panel, a reinforcing ring is arranged around the second opening, and the reinforcing ring is located outside the edge of the second opening.

[0014] In the display panel, the thickness of the reinforcing ring is greater than that of the pixel defining layer of the display panel.

[0015] In the display panel, the surface of the reinforcing ring is provided with a groove.

[0016] The display panel provided in the present application can effectively solve the technical problem that the visual effect difference between the first region and the second region of the display panel is obvious in the screen-off state by arranging the second opening in the second sub-region of the second region and arranging the metal trace outside the second opening.

[0017] Specifically, the technical solution of the present application sets the second opening in the second sub-region between at least two pixels in the second region, so that the second region has similar optical properties to the first region. In the conventional technology, the first region has obvious differences in optical properties from the second region which is not provided with an opening, because the first opening is set to allow light to pass through to the light sensor device, resulting in different reflectivity and visual effects of the two regions in the screen-off state. The present application sets the second opening in the second region, so that the optical structure of the second region is consistent with that of the first region, thereby reducing the difference in optical properties between the two regions. When the display panel is in the screen-off state, the first region and the second region have similar reflection characteristics to ambient light, thus presenting a consistent appearance effect in vision, eliminating the original visual difference problem.

[0018] In addition, the present application further optimizes the optical properties of the second region by setting the metal trace outside the second opening. The metal trace has strong light reflection ability, and if the metal trace passes through the area below the second opening, it will significantly affect the optical properties of the area, causing the reflectivity of the area of the second opening to differ from that of the area of the first opening. The present application sets the metal trace outside the second opening, avoiding the interference of the metal trace with the optical properties of the second opening, ensuring that the area of the second opening can maintain similar optical properties to the area of the first opening, i.e., the optical properties of the second sub-region can better match the optical properties of the first sub-region, further improving the visual consistency between the two regions.

[0019] The technical solution of the present application eliminates the visual difference between the first region and the second region, and the display panel presents a more uniform appearance in the screen-off state, avoiding problems caused by the visual prominence of local regions.

[0020] The first opening of the first region continues to effectively pass external ambient light to the light sensor device, ensuring that the ambient light sensing function of the display panel is not affected. Although the second opening of the second region changes the optical properties of the region to some extent, it does not negatively affect the basic display function of the display panel, ensuring the overall performance of the display panel. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is a schematic diagram of a display panel provided by an embodiment of the present application.

[0022] Figure 2 is Figure 1 is a schematic diagram of a part of the display panel in the first region.

[0023] Figure 3 is Figure 1 is a schematic diagram of a part of the display panel in the second region.

[0024] Figure 4 FIG. 1 is a schematic view of a first embodiment of a portion of a display panel in a second sub-region provided by the present application.

[0025] Figure 5 FIG. 2 is a schematic view of a second embodiment of a portion of a display panel in a second sub-region provided by the present application.

[0026] Figure 6 FIG. 3 is a schematic view of a third embodiment of a portion of a display panel in a second sub-region provided by the present application.

[0027] Figure 7 FIG. 4 is a schematic view of a fourth embodiment of a portion of a display panel in a second sub-region provided by the present application. DETAILED DESCRIPTION

[0028] The specific embodiments of the present application will be described below in detail with reference to the accompanying drawings.

[0029] The terms "first", "second", and similar terms do not denote any order, quantity, or importance, but are used to distinguish different technical features. The term "multiple" and similar terms mean two or more, unless otherwise explicitly limited.

[0030] Embodiments of the present application can be combined with each other.

[0031] In the prior art, there is an inconsistency in the visual effect between a first region Z1 (a light-transmitting area of a light-sensing device) and a second region Z2 of a polarizer-free organic light-emitting diode display panel in an off-screen state. Due to the difference in optical properties between the aperture portion (first aperture H1) in the first sub-region Z11 and the non-aperture portion in the second region Z2, the reflectivity of the first region Z1 is higher than that of the second region Z2, which affects the user experience. The present application effectively solves this technical problem by providing a second aperture H2 at a specific position of the second region Z2, optimizing the layout of the metal trace, and filling the light-transmitting material TM.

[0032] Embodiments of the present application provide a display panel, which may, for example, be a polarizer-free organic light-emitting diode display panel. The display panel includes a display region AA and a non-display region located at the periphery of the display region AA. As shown in FIGS. 1, 2, 3, and 4, the display region AA of the display panel includes a first region Z1 and a second region Z2 other than the first region Z1, and the first region Z1 and the second region Z2 are both provided with a plurality of pixels PX. Figure 1 、 Figure 2 and Figure 3 As shown in FIGS. 1, 2, 3, and 4, the display region AA of the display panel includes a first region Z1 and a second region Z2 other than the first region Z1, and the first region Z1 and the second region Z2 are both provided with a plurality of pixels PX.

[0033] The display panel comprises an organic light-emitting diode array substrate, an encapsulation layer, a touch device, a light-shielding layer, a color film layer, an optical adhesive layer and a cover glass. The organic light-emitting diode array substrate comprises a substrate, a buffer layer disposed on the substrate, a semiconductor layer disposed on the buffer layer, a gate insulating layer disposed on the semiconductor layer, a first metal layer disposed on the gate insulating layer, an interlayer insulating layer disposed on the first metal layer, a second metal layer disposed on the interlayer insulating layer, a planarization layer disposed on the second metal layer, a first electrode layer disposed on the planarization layer, a pixel definition layer (black pixel definition layer) disposed on the planarization layer and / or the first electrode layer, an organic light-emitting layer disposed in an opening region defined by the pixel definition layer, and a second electrode layer disposed on the organic light-emitting layer. The encapsulation layer is disposed on the second electrode layer. The touch device is disposed on the encapsulation layer. The light-shielding layer is disposed on the touch device, the light-transmitting region of the light-shielding layer corresponds to the position of the organic light-emitting layer, the non-light-transmitting region (light-shielding region) of the light-shielding layer corresponds to the position of the pixel definition layer (black pixel definition layer), the light-shielding layer is a black matrix layer for preventing optical cross talk between adjacent pixels PX. The color film layer, acting as a polarizer, is disposed on the touch device, and the color film layer is disposed in the light-transmitting region of the light-shielding layer. The optical adhesive layer is disposed on the light-shielding layer and the color film layer. The cover glass is disposed on the dry adhesive layer. The first metal layer comprises gate lines (GE1, GE2) and gates, and the second metal layer comprises source-drain lines (SD1-1, SD1-2, SD1-3, SD1-4, SD1-5, SD1-6), sources and drains. The encapsulation layer is sealingly connected to the organic light-emitting diode array substrate.

[0034] The display panel is provided with a light sensor device in a first region Z1. The first region Z1 is arranged on at least one side of the camera aperture O-cut, for allowing ambient light to pass through at least part of the film layers of the display panel to reach the light sensor device, so that the display panel can realize ambient light sensing functions, including automatic brightness adjustment, color calibration and the like. The light sensor device detects the illumination intensity and color temperature information of the external environment by receiving light passing through the first opening H1.

[0035] Each pixel PX comprises a pixel driving circuit and a light-emitting device. The pixel driving circuit comprises at least two transistors and at least one storage capacitor. One of the transistors acts as a switching transistor, with its gate electrically connected to a gate line (GE1, GE2) and its source electrically connected to a source-drain line (SD1-1, SD1-2, SD1-3, SD1-4, SD1-5, SD1-6); the other transistor acts as a driving transistor, with its gate electrically connected to the drain of the switching transistor, its source electrically connected to a first power supply line, and its drain electrically connected to the anode of the light-emitting device. One end of the storage capacitor is electrically connected to the gate of the driving transistor, and the other end is electrically connected to the source or drain of the driving transistor. The cathode of the light-emitting device is electrically connected to a second power supply line.

[0036] As Figure 2 shown, the first sub-region Z11 between the at least two pixels PX in the first region Z1 is provided with a first opening H1, the first opening H1 penetrates through a first part of the film layers of the display panel, and the first opening H1 transmits the light from the external environment of the display panel to the light sensor device. The first part of the film layers at least includes the light shielding layer and the pixel defining layer, that is, the first opening H1 at least penetrates through the light shielding layer and the pixel defining layer to form a light transmission channel, so that the external environment light can directly reach the light sensor device.

[0037] As Figure 3 shown, the second sub-region Z21 between the at least two pixels PX in the second region Z2 is provided with a second opening H2, and the second opening H2 penetrates through a second part of the film layers of the display panel. The second part of the film layers at least includes the light shielding layer and the pixel defining layer. For example, the second opening H2 penetrates through the light shielding layer and the pixel defining layer, and the second opening H2 does not penetrate through other transparent film layers in the display panel except the light shielding layer and the pixel defining layer. By setting the opening structure similar to the first sub-region Z11 in the second region Z2, the first region Z1 and the second region Z2 tend to be consistent in optical properties, thereby eliminating the visual difference in the mute state.

[0038] The second opening H2 is filled with a light-transmitting material TM, and the light transmittance of the light-transmitting material TM is substantially equal to the light transmittance of the part of the display panel located in the first sub-region Z11. The light-transmitting material TM can be a transparent organic material, a transparent inorganic material, or a transparent composite material. The second sub-region Z21 filled with the light-transmitting material TM is consistent with the first sub-region Z11 in reflectivity, transmittance, and other optical properties.

[0039] The display panel further includes a plurality of gate lines (GE1, GE2), a plurality of source-drain lines (SD1-1, SD1-2, SD1-3, SD1-4, SD1-5, SD1-6), a plurality of light-emitting control signal lines, a light-emitting control circuit, and a gate drive circuit. The plurality of gate lines (GE1, GE2) and the plurality of light-emitting control signal lines extend along a first direction and are arranged along a second direction, and the plurality of source-drain lines (SD1-1, SD1-2, SD1-3, SD1-4, SD1-5, SD1-6) extend along the second direction and are arranged along the first direction, the first direction being perpendicular to the second direction. The light-emitting control circuit is arranged in the non-display region and is electrically connected to the plurality of light-emitting control signal lines, and is used for controlling the light-emitting timing of the pixels PX. The gate drive circuit is arranged in the non-display region and is electrically connected to the plurality of gate lines (GE1, GE2). The gate drive circuit includes a plurality of cascaded gate drive sub-circuits, each gate drive sub-circuit being electrically connected to one gate line (GE1, GE2). The gate drive sub-circuits sequentially output scan signals to scan each row of pixels PX of the display region AA row by row, thereby realizing row-by-row display of the image.

[0040] The metal traces include gate lines (GE1, GE2) or source-drain lines (SD1-1, SD1-2, SD1-3, SD1-4, SD1-5, SD1-6). Gate lines (GE1, GE2) are used to control the switching on and off of the thin-film transistor, while source-drain lines (SD1-1, SD1-2, SD1-3, SD1-4, SD1-5, SD1-6) are used to transmit data signals and power signals.

[0041] From a top-down view of the display panel, the metal traces (SD1-1, SD1-2, SD1-3, SD1-4, SD1-5, SD1-6, GE1, GE2) located in the second sub-region Z21 are positioned outside the second opening H2. By adjusting the relative positional relationship between the metal traces (SD1-1, SD1-2, SD1-3, SD1-4, SD1-5, SD1-6, GE1, GE2) and the second opening H2, the influence of the metal traces on the optical characteristics of the second opening H2 is avoided.

[0042] In the first implementation, such as Figure 4 As shown, from a top-down view of the display panel, at least one metal trace SD1-2 located in the second sub-region Z21 is interrupted at the second opening H2. Preferably, all second sub-regions Z21 in the second region Z2 are provided with a second opening H2 to ensure the consistency of the optical characteristics of the entire second region Z2. The metal trace SD1-2, which was originally intended to pass through the area below the second opening H2 in the second sub-region Z21 in a direction perpendicular to the plane of the display panel, is interrupted at the periphery of the second opening H2. No metal trace is provided at or below the second opening H2 to avoid the overlap of the metal trace SD1-2 with the second opening H2, ensuring that the optical characteristics of the second sub-region Z21 are completely consistent with those of the first sub-region Z11, achieving the best visual effect matching.

[0043] In the second implementation, such as Figure 5 As shown, from a top-view perspective of the display panel, at least one metal trace SD1-3 located in the second sub-region Z21 bypasses the second opening H2. Preferably, all second sub-regions Z21 in the second region Z2 are provided with a second opening H2 to ensure the consistency of the optical characteristics of the entire second region Z2. The metal trace SD1-3, which would originally pass through the area below the second opening H2 in the direction perpendicular to the plane of the display panel in the second sub-region Z21, bypasses the second opening H2 on one side. The metal trace SD1-3 is not interrupted at the second opening H2 but changes its routing path. This method maintains the continuity of the metal trace SD1-3 while ensuring that the optical effect of the second opening H2 is not affected by the metal trace SD1-3 by bypassing the second opening H2, thus balancing the requirements of circuit performance and optical effect.

[0044] In the third implementation, such as Figure 6 As shown, from a top-down view of the display panel, at least one metal trace SD1-5 located in a portion of the second sub-region Z21 bypasses the second opening H2, and at least one metal trace SD1-4 and SD2 located in another portion of the second sub-region Z21 pass through the second opening H2 in the area below in the direction perpendicular to the plane where the display panel is located.

[0045] In the fourth embodiment, such as Figure 7 As shown, from a top-down view of the display panel, at least one metal trace SD1-6 located in a portion of the second sub-region Z21 is interrupted at the second opening H2, and at least one metal trace SD1-4 and SD2 located in another portion of the second sub-region Z21 pass through the second opening H2 in the area below in the direction perpendicular to the plane where the display panel is located.

[0046] Through the above technical solution, the difference in reflectivity between the portion of the display panel located in the first sub-region Z11 and the portion of the display panel located in the second sub-region Z21 is within a preset range. The preset range is a numerical range that makes the difference in reflectivity imperceptible to the naked eye, thereby achieving visual consistency of the display panel when the screen is off.

[0047] The technical solution of this application effectively solves the problem of inconsistent visual effects when the screen of a polarizer-free organic light-emitting diode display panel is off by setting a second opening H2 similar to that in the first region Z1 in the second region Z2, filling it with an appropriate light-transmitting material TM, and optimizing the layout of the metal traces (SD1-1, SD1-2, SD1-3, SD1-4, SD1-5, SD1-6, GE1, GE2). Through the setting of the second opening H2 and the filling with the light-transmitting material TM, the optical characteristics of the second region Z2 are kept consistent with those of the first region Z1; by interrupting or bypassing the metal traces (SD1-1, SD1-2, SD1-3, SD1-4, SD1-5, SD1-6, GE1, GE2) at the second opening H2, the adverse effects of the metal traces on the optical effect are avoided. The technical solution of this application achieves good optical effects and visual consistency, significantly improving the user experience.

[0048] The setting of the second opening H2 will weaken the mechanical strength of the display panel. When the display panel is subjected to external impact or bending, the film layer around the second opening H2 is prone to cracks or breakage, affecting the reliability and service life of the display panel.

[0049] To solve the above technical problems, the present application provides a reinforcing ring around the second opening H2, the reinforcing ring is located outside the edge of the second opening H2, and the thickness of the reinforcing ring is greater than the thickness of the pixel defining layer. The reinforcing ring is made of the same material as the pixel defining layer. The reinforcing ring disperses stress concentration by increasing the film layer thickness of the area around the second opening H2, and can effectively transfer and disperse stress when the display panel is subjected to external force, avoiding stress concentration phenomenon in the area around the second opening H2.

[0050] The geometric shape of the reinforcing ring is a ring structure, and the inner diameter is greater than the diameter of the second opening H2. The width of the reinforcing ring is 0.1 to 0.3 times the diameter of the second opening H2, and the specific values include 0.12, 0.15, 0.18, 0.20, 0.22, 0.25, 0.28 times the diameter of the second opening H2. The distance between the reinforcing ring and the second opening H2 is 0.05 to 0.15 times the diameter of the second opening H2, and the specific values include 0.06, 0.08, 0.10, 0.12, 0.14 times the diameter of the second opening H2. This spacing setting can not only ensure the reinforcing effect of the reinforcing ring, but also will not significantly affect the optical properties of the second opening H2.

[0051] The thickness of the reinforcing ring is set to 1.2 to 2.0 times the thickness of the pixel defining layer, and the specific thickness values include 1.3, 1.5, 1.7, 1.8 times the thickness of the pixel defining layer. The cross-sectional shape of the reinforcing ring can be rectangular, trapezoidal or circular arc, among which the reinforcing ring with trapezoidal cross-section has better stress dispersion effect, and the bottom edge of the trapezoid is directed towards the direction of the second opening H2, and the top edge is directed towards the outside direction.

[0052] The manufacturing process of the reinforcing ring includes photoresist coating, exposure, development, etching and other steps. First, after the pixel defining layer is formed, the same material as the pixel defining layer is coated on the entire substrate surface, and the coating thickness is the required reinforcing ring thickness. Then, a reinforcing ring pattern is formed on the polyimide layer using a photolithography process, and the thickness of the photoresist is 1 to 3 microns.

[0053] When the display panel is subjected to external force, stress will cause stress concentration phenomenon around the second opening H2, and the stress concentration coefficient can reach 2 to 4 times. The reinforcing ring disperses the concentrated stress into a larger area by increasing the material volume around the second opening H2 and changing the stress transfer path. The presence of the reinforcing ring changes the stress transfer path from the original direct through the edge of the second opening H2 to gradual transfer through the reinforcing ring, and the stress concentration coefficient is reduced to less than 1.5 times.

[0054] To further enhance the reinforcing effect of the reinforcing ring, the surface of the reinforcing ring can be provided with grooves. The grooves include radial grooves and annular grooves, the radial grooves are distributed along the radial direction of the reinforcing ring, and the annular grooves are distributed along the annular direction of the reinforcing ring. The depth of the grooves is 0.1 to 0.3 times the thickness of the reinforcing ring, and the width of the grooves is 1 to 5 microns. These grooves can further improve the stress dispersion effect and improve the mechanical properties of the reinforcing ring.

[0055] The light-transmitting material TM filled in the second opening H2 may be aged or discolored due to environmental factors such as ultraviolet radiation and temperature changes during long-term use, causing changes in the optical properties of the light-transmitting material TM, reducing the optical property matching degree between the second sub-region Z21 and the first sub-region Z11, and reappearing visual differences.

[0056] To solve the above technical problems, the anti-aging additive is added to the light-transmitting material TM, and the anti-aging additive includes ultraviolet absorbers and antioxidants. The ultraviolet absorbers are used to absorb the incident ultraviolet light to avoid damage to the molecular chain of the light-transmitting material TM, and the antioxidants are used to prevent the light-transmitting material TM from changing the molecular structure in the oxidation environment.

[0057] The ultraviolet absorbers use benzotriazole compounds or benzophenone compounds. The benzotriazole compounds include 2-(2-hydroxy-5-methylphenyl) benzotriazole, 2-(2-hydroxy-3,5-di-tert-butylphenyl) benzotriazole, etc. The benzophenone compounds include 2-hydroxy-4-methoxybenzophenone, 2,2'-dihydroxy-4-methoxybenzophenone, etc. These ultraviolet absorbers can effectively absorb ultraviolet light with a wavelength of 280 to 400 nanometers. The molecular structure of the ultraviolet absorber contains a conjugated system, when the ultraviolet light is irradiated, the electrons in the conjugated system will undergo a transition, converting the ultraviolet light energy into heat energy or other forms of energy, thereby protecting the main molecules of the light-transmitting material TM from being damaged by ultraviolet light.

[0058] The antioxidants use phenolic antioxidants or amine antioxidants. The phenolic antioxidants include 2,6-di-tert-butyl-4-methylphenol, tetra-methylene-3-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] methane, etc. The amine antioxidants include N,N'-diphenyl-1,4-phenylenediamine, 4,4'-dioctyl diphenylamine, etc. These antioxidants neutralize free radicals by providing active hydrogen atoms or electrons to block the oxidation reaction chain and prevent the light-transmitting material TM from being oxidized and degraded. The phenolic antioxidant mainly provides hydrogen atoms through the hydroxyl group to neutralize peroxide radicals, and the amine antioxidant mainly provides electrons through the amino group to neutralize free radicals.

[0059] The anti-aging additive is added in an amount of 0.5% to 2% of the total weight of the light-transmitting material TM, and specific amounts include 0.6%, 0.8%, 1.0%, 1.2%, 1.5%, 1.8%, etc. of the total weight of the light-transmitting material TM. The weight ratio of the ultraviolet absorber to the antioxidant is 1:1 to 3:1, and specific ratios include 1.2:1, 1.5:1, 2:1, 2.5:1, etc. When the total weight of the light-transmitting material TM is 100 grams, the total amount of the anti-aging additive added is 0.5 grams to 2 grams, of which the amount of the ultraviolet absorber added is 0.25 grams to 1.5 grams, and the amount of the antioxidant added is 0.25 grams to 0.75 grams.

[0060] The light-transmitting material TM also includes a stabilizer for maintaining the stability of the optical properties of the light-transmitting material TM under different temperature conditions. The stabilizer is an organic tin compound or an organic aluminum compound. The organic tin compound includes dibutyl tin dilaurate, dibutyl tin maleate, etc. The organic aluminum compound includes aluminum isopropylate, aluminum acetylacetonate, etc. The stabilizer is added in an amount of 0.1% to 0.5% of the total weight of the light-transmitting material TM, and specific amounts include 0.15%, 0.2%, 0.3%, 0.4%, etc. of the total weight of the light-transmitting material TM.

[0061] The preparation process of the light-transmitting material TM includes the steps of raw material mixing, dissolution, filtration, and degassing. First, the light-transmitting material TM matrix, ultraviolet absorber, antioxidant, and stabilizer are mixed according to the set ratio, the mixing temperature is controlled at 60 to 80 degrees Celsius, and the mixing time is 30 to 60 minutes. Then, an appropriate amount of organic solvent is added for dissolution, and the organic solvent can be acetone, methyl ethyl ketone, or cyclohexanone, and the solvent is added in an amount of 2 to 5 times the total weight of the solid components. The dissolution process uses magnetic stirring, the stirring speed is 200 to 500 revolutions per minute, and the dissolution time is 2 to 4 hours. Next, a filter with a pore size of 0.2 microns is used to filter the solution to remove undissolved particles and impurities. Finally, degassing is performed under vacuum conditions, the vacuum degree is -0.08 to -0.09 megapascals, and the degassing time is 15 to 30 minutes.

[0062] The above describes the embodiments of the present application in detail, and the content of the specification should not be understood as limiting the scope of protection of the present application.

Claims

1. A display panel, characterized by The display area of the display panel includes a first area and a second area other than the first area, and the first area and the second area are both provided with a plurality of pixels; The display panel is provided with a light sensor device in the first area; A first sub-area between at least two of the pixels in the first area is provided with a first opening, the first opening penetrates through a first part of film layers of the display panel, and the first opening transmits light from an external environment of the display panel to the light sensor device; A second sub-area between at least two of the pixels in the second area is provided with a second opening, the second opening penetrates through a second part of film layers of the display panel, and metal traces in the second sub-area are located outside the second opening in a top view of the display panel.

2. The display panel of claim 1, wherein, At least one of the metal traces in the second sub-area is interrupted at the second opening in the top view of the display panel.

3. The display panel of claim 1, wherein, At least one of the metal traces in the second sub-area bypasses the second opening in the top view of the display panel.

4. The display panel of claim 1, wherein, At least one of the metal traces in a part of the second sub-area bypasses the second opening, and at least one of the metal traces in another part of the second sub-area penetrates through the second opening in the top view of the display panel.

5. The display panel of claim 1, wherein, At least one of the metal traces in a part of the second sub-area is interrupted at the second opening, and at least one of the metal traces in another part of the second sub-area penetrates through the second opening in the top view of the display panel.

6. The display panel of claim 1, wherein, The first part of film layers and the second part of film layers both include at least a light shielding layer and a pixel defining layer.

7. The display panel of claim 1, wherein, The second opening is filled with a light-transmitting material, and the light-transmitting rate of the light-transmitting material is substantially equal to the light-transmitting rate of the part of the display panel located in the first sub-area.

8. The display panel of claim 1, wherein, The second opening is provided with a reinforcing ring outside the edge of the second opening.

9. The display panel of claim 8, wherein, The thickness of the reinforcing ring is greater than the thickness of the pixel defining layer of the display panel.

10. The display panel of claim 8, wherein, The surface of the reinforcing ring is provided with a groove.

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