Display panel, manufacturing method thereof, and display device

Abstract

The application discloses a display panel and a manufacturing method thereof, and a display device, and relates to the technical field of display, wherein the display panel comprises a substrate, a light-emitting module and a plurality of adjusting modules; the light-emitting module is arranged on the surface of the substrate and comprises a plurality of pixel units, each pixel unit is arranged in an array along a direction parallel to the substrate; each adjusting module is arranged between two adjacent pixel units and comprises a first film layer and a second film layer arranged in a first direction, the first film layer is a semi-transparent and semi-reflective film, and the second film layer is a full-reflective film; external light is sequentially irradiated on the surfaces of the first film layer and the second film layer, and the light reflected by the second film layer and the light reflected by the first film layer interfere with each other. The display panel provided by the application utilizes constructive interference and destructive interference of light, solves the problem that the existing display panel displays dimly under strong light, and improves the display effect.

Description

TECHNICAL FIELD

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

[0002] Organic Light-Emitting Diode (OLED) is one of the most advanced display technologies at present, and has been widely used in many fields due to its unique advantages. OLED screen provides users with excellent visual experience with its fast response time, wide viewing angle, high contrast ratio and energy-saving environmental characteristics.

[0003] However, although OLED technology performs well in many aspects, OLED display panel also has more obvious defects compared with other types of display panels on the market: the brightness of OLED screen is usually low, which is particularly evident in strong light environment. When the OLED screen is exposed to direct sunlight or other strong light sources, the brightness of the screen is not enough to provide a clear visual experience, resulting in dim screen content, which affects the viewing effect of users, which limits the application of OLED technology in outdoor or high brightness demand scenarios. SUMMARY

[0004] The main purpose of the present application is to provide a display panel, a manufacturing method thereof and a display device, which aims to solve the problem of dim display of the existing display panel in strong light environment.

[0005] To achieve the above purpose, the display panel provided by the present application comprises:

[0006] a substrate;

[0007] a light emitting module arranged on the surface of the substrate, the light emitting module comprising a plurality of pixel units, each of the pixel units being arranged in an array along a direction parallel to the substrate; and

[0008] a plurality of adjusting modules, each of the adjusting modules being arranged between two adjacent pixel units, the adjusting module comprising a first film layer and a second film layer arranged in a first direction, the first film layer being a semi-transparent and semi-reflective film, and the second film layer being a full-reflective film;

[0009] external light successively irradiates the surfaces of the first film layer and the second film layer, and the light reflected by the second film layer interferes with the light reflected by the first film layer.

[0010] In an embodiment of the present application, the adjusting module further comprises two electrode layers, one of the electrode layers being located on the side of the first film layer away from the substrate, and the other of the electrode layers being located on the side of the second film layer facing the substrate.

[0011] At least part of the material of at least one of the first film layer and the second film layer is a deformable metal material, and the first film layer and the second film layer are close to or away from each other under the electric field of the two electrode layers to adjust the distance between the first film layer and the second film layer.

[0012] In an embodiment of the present application, the material of the second film layer close to the two ends of the two pixel units is a deformable metal material, and the material of the rest is a non-deformable metal material.

[0013] In an embodiment of the present application, each pixel unit comprises, in sequence along the first direction, a light-emitting layer, a film layer, and a filter layer.

[0014] The two filter layers of any two adjacent pixel units are provided with a light-shielding layer, and each adjusting module is arranged in the light-shielding layer and exposed on the side of the light-shielding layer away from the film layer.

[0015] In an embodiment of the present application, the light-shielding layer is provided with an interference groove, the adjusting module is embedded in the interference groove, and the two sides of the first film layer and the second film layer are connected with the opposite two side walls of the interference groove.

[0016] In an embodiment of the present application, the cross-sectional dimension of the interference groove gradually increases in the direction away from the substrate.

[0017] In an embodiment of the present application, the longitudinal cross-sectional shape of the interference groove is trapezoidal, triangular, or circular arc-shaped.

[0018] The present application also provides a manufacturing method of a display panel, comprising the following steps:

[0019] Depositing a light-emitting module comprising a plurality of pixel units on the surface of a substrate;

[0020] Depositing a first film layer and a second film layer arranged in sequence and spaced apart between each two pixel units to form an adjusting module.

[0021] In an embodiment of the present application, the step of depositing a first film layer and a second film layer arranged in sequence and spaced apart between each two pixel units to form an adjusting module comprises:

[0022] Etching an interference groove on the light-shielding layer between two adjacent pixel units;

[0023] Depositing, in sequence, an electrode layer, a first sacrificial layer, the second film layer, a second sacrificial layer, the first film layer, and another electrode layer in the interference groove;

[0024] The first and second sacrificial layers are etched away by wet etching to form an optical microcavity between the first and second film layers.

[0025] The display device comprises the display panel according to any one of the above.

[0026] The display panel comprises a substrate, a light-emitting module and a plurality of adjusting modules. The light-emitting module is encapsulated on the surface of the substrate. The light-emitting module comprises at least an anode layer, an organic light-emitting layer and a cathode layer. The organic light-emitting layer generates visible light under the electric field of the anode layer and the cathode layer. The light-emitting module can be divided into a plurality of pixel units. Each pixel unit can be controlled to emit light individually. The plurality of pixel units are arranged in an array on the surface of the substrate in a direction parallel to the substrate. Each adjusting module is arranged between two adjacent pixel units. The adjusting module comprises a first film layer and a second film layer arranged in sequence and spaced apart in a first direction (i.e. a direction perpendicular to the surface of the substrate). The first film layer is a half-head half-reflection film, and the second film layer is a full-reflection film. An optical microcavity is formed between the first film layer and the second film layer.

[0027] When external light is incident on the surface of the display panel, the light is first incident on the surface of the first film layer. Part of the light is reflected by the first film layer, and the rest of the light is transmitted into the optical microcavity and then reflected by the second film layer and emitted from the first film layer. The light reflected by the first film layer and the light reflected by the second film layer interfere with each other. Part of the light undergoes constructive interference, and the rest of the light undergoes destructive interference. Through the constructive interference, the human eye receives a specific wavelength of color, including red, green and blue, to improve the penetration and reduce the power consumption of the display panel. Through the destructive interference, black color is generated to improve the contrast ratio and color gamut of the display panel. Thus, the problem of poor display of the existing display panel in strong light is solved, the user experience is improved, and the application scenarios of the OLED display panel are increased. BRIEF DESCRIPTION OF DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application. Those skilled in the art can obtain other drawings according to the structures shown in these drawings without any creative effort.

[0029] Figure 1 The structural schematic diagram of an embodiment of the display panel provided by the present application;

[0030] Figure 2Structure schematic view of the light shielding layer and the adjusting module in the display panel provided by the present application;

[0031] Figure 3 Structure schematic view of the light shielding layer and the adjusting module in the display panel provided by the present application;

[0032] Figure 4 Structure schematic view of the light shielding layer and the adjusting module in the display panel provided by the present application;

[0033] Figure 5 Structure schematic view of the light shielding layer and the adjusting module in the display panel provided by the present application;

[0034] Figure 6 Flow chart of the manufacturing method of the display panel provided by the present application;

[0035] Figure 7 Flow chart of the manufacturing method of the display panel provided by the present application.

[0036] Brief Description of the Drawings:

[0037] 10, substrate; 11, base; 12, driving circuit; 20, light emitting module; 21, pixel unit; 211, light emitting layer; 212, thin film layer; 213, touch layer; 214, filter layer; 30, adjusting module; 31, first film layer; 32, second film layer; 33, optical microcavity; 34, electrode layer; 40, light shielding layer; 50, pixel isolation layer; 60, transparent adhesive layer; 70, glass cover plate.

[0038] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0039] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0040] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement condition, etc. between the components in a certain posture, and if the certain posture changes, the directional indications also change accordingly.

[0041] In addition, if the description of "first", "second" and the like is involved in the embodiments of the present application, the description of "first", "second" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can be explicitly or implicitly included at least one of the features. In addition, if "and / or" or "and / or" appears throughout the text, it means that the three parallel schemes are included, for example, "A and / or B" includes A scheme, or B scheme, or A and B scheme. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of the ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor in the protection scope required by the present application.

[0042] The present application provides a display panel.

[0043] In combination Figure 1 As shown in the embodiment of the present application, the display panel comprises a substrate 10, a light emitting module 20 and a plurality of adjusting modules 30; the light emitting module 20 is arranged on the surface of the substrate 10, and the light emitting module 20 comprises a plurality of pixel units 21, each of which is arranged in an array along the direction parallel to the substrate 10; each adjusting module 30 is arranged between two adjacent pixel units 21, and the adjusting module 30 comprises a first film layer 31 and a second film layer 32 arranged in a first direction, the first film layer 31 is a semi-transparent and semi-reflective film, and the second film layer 32 is a full-reflective film; external light is sequentially irradiated on the surface of the first film layer 31 and the second film layer 32, and the light reflected by the second film layer 32 interferes with the light reflected by the first film layer 31.

[0044] The display panel can be an LCD, LED or OLED display panel, wherein the OLED display panel has relatively low brightness, and the technical solution proposed in the present application can improve the low brightness of the OLED in the strong light environment more obviously.

[0045] In the embodiment, the substrate 10 comprises a substrate 11 and a driving circuit 12, which can be a silicon-based substrate 10, a glass substrate 10 or a plastic substrate 10, etc. Each layer in the light emitting module 20 is deposited on the substrate 10 in turn, and visible light is generated under the driving of the driving circuit 12. Each pixel unit 21 in the light emitting module 20 can be controlled to emit light individually to present different color images on the display panel. Each pixel unit 21 is separated and arranged by a pixel isolation layer 50 to avoid the problem of light mixing between adjacent pixel units 21 and improve the contrast of the display panel. The first direction is Figure 1 X direction in the middle.

[0046] The adjusting module 30 is configured to improve the problems of screen surface whitening, greying and low brightness by using the principle of light interference. Specifically, the first film layer 31 in the adjusting module 30 is a semi-transparent and semi-reflective film, for example, thin layer of titanium dioxide, silicon dioxide or zinc oxide. The second film layer 32 is a full-reflective film, which is made of silver or aluminum, or has a silver or aluminum coating on the surface. When the external strong light is incident on the display panel, the light is incident on the first film layer 31. Since the first film layer 31 is a semi-transparent and semi-reflective film, the light wave is transmitted and reflected on the first film layer 31. The light wave transmitted from the first film layer 31 is totally reflected by the second film layer 32 and then transmitted to the outside of the display panel from the first film layer 31.

[0047] Therefore, the distance between the first film layer 31 and the second film layer 32 can be controlled to make the light wave reflected by the first film layer 31 interfere with the light wave reflected by the second film layer 32. Some wavelengths of light interfere constructively, and the rest of the wavelengths interfere destructively. Through constructive interference, the human eye receives a specific wavelength of color, including red, green and blue, to improve the penetration and reduce the power consumption of the display panel. Through destructive interference, black color is generated to improve the contrast ratio and color gamut of the display panel. Thus, the problem of dim display of the existing display panel under strong light is solved, the user experience is improved, and the application scenarios of the OLED display panel are increased.

[0048] Further, the first film layer 31 is formed by stacking multiple thin films, and each thin film is made of different material and thus has different refractive index. When the light wave is incident on the multiple film structure, multiple reflection and transmission occur. Therefore, the light waves between different layers interfere with each other. According to the phase difference of the light waves, some wavelengths of light interfere constructively, and the rest of the wavelengths interfere destructively.

[0049] Further, the adjusting module 30 is arranged between any two adjacent pixel units 21 of the display panel to avoid the reflection of the first film layer 31 and the second film layer 32 affecting the light emission of the pixel units 21. Of course, an adjusting module 30 can also be arranged between each two adjacent pixel units 21. By arranging the adjusting module between the pixel units 21, when the light waves reflected by the first film layer 31 and the second film layer 32 interfere destructively, the surface of the first film layer 31 displays black state, which can further prevent color mixing between the two adjacent pixel units 21 to improve the contrast ratio and color gamut of the display panel. By adjusting the distance between the first film layer 31 and the second film layer 32, the specific wavelengths of light can be made to interfere constructively to improve the brightness of the display panel.

[0050] In combination Figures 2 to 5As shown, in an embodiment of the present application, the adjusting module 30 further comprises two electrode layers 34, one electrode layer 34 is located on the side of the first film layer 31 away from the substrate 10, and the other electrode layer 34 is located on the side of the second film layer 32 facing the substrate 10.

[0051] At least part of the material of at least one of the first film layer 31 and the second film layer 32 is a deformable metal material, and the first film layer 31 and the second film layer 32 are close to or away from each other under the action of the electric field of the two electrode layers 34, so as to adjust the distance between the first film layer 31 and the second film layer 32.

[0052] In order to achieve the above-mentioned purpose of adjusting the distance between the first film layer 31 and the second film layer 32, in the embodiment, two electrode layers 34 are arranged on both sides of the first film layer 31 and the second film layer 32, wherein the electrode layer 34 is made of a transparent conductive oxide (TCO) material, such as indium tin oxide (ITO) or doped zinc oxide, which has good visible light transmittance and electrical conductivity. These materials have high transparency in the visible light spectrum and can effectively conduct current, so that light can smoothly enter the first film layer 31 from the electrode layer 34, and an electric field is formed between the two electrode layers 34.

[0053] By connecting the two electrode layers 34 to the positive and negative electrodes of the driving circuit 12 respectively, a voltage is applied between the two electrode layers 34, and the first film layer 31 and the second film layer 32 can be designed to have a part of the position as a deformable metal material, or one of them can be designed to have a part of the position as a deformable metal material. Therefore, under the action of the electric field force, the first film layer 31 and the second film layer 32 will move towards the direction of approaching or moving away from each other, thereby adjusting the distance between the first film layer 31 and the second film layer 32, and realizing dynamic color and brightness control.

[0054] By controlling the voltage applied to the two electrode layers 34, the distance between the film layers can be accurately adjusted, and dynamic control of the color and brightness of the display panel can be realized. This electric field regulation mechanism enables the display panel to maintain high brightness, high contrast and color accuracy under different environmental light conditions.

[0055] In an embodiment of the present application, the material of the second film layer 32 near the two ends of the two pixel units 21 is a deformable metal material, and the material of the remaining part is a non-deformable metal material.

[0056] In the embodiment, the two ends of the second film layer 32 are made of a deformable metal material, such as an alloy with shape memory function, so that the second film layer 32 deforms at the micron or nanometer level under the action of the electric field, thereby finely adjusting the distance between the first film layer 31 and the second film layer 32, and realizing smoother color transition and higher display resolution.

[0057] The rest of the second film layer 32 is made of a non-deformable or less deformable metal material, such as aluminum or silver, so that the middle part of the second film layer 32 remains flat after the deformation of the second film layer 32 towards the first film layer 31, thereby facilitating the accurate control of the propagation path of the light wave without changing the size and shape of the light beam, and further improving the control accuracy of the light wave interference.

[0058] In combination Figure 1 As shown in an embodiment of the present application, each pixel unit 21 includes a light-emitting layer 211, a thin film layer 212, and a filter layer 214 arranged in sequence along a first direction.

[0059] A light-blocking layer 40 is arranged between the filter layers 214 of any two adjacent pixel units 21, and each adjustment module 30 is arranged in the light-blocking layer 40 and exposed on the side of the light-blocking layer 40 away from the thin film layer 212.

[0060] In the embodiment, each pixel unit 21 is composed of multiple layers, in which the light-emitting layer 211 is composed of an anode layer, an organic light-emitting diode (OLED layer), and a cathode layer, and is responsible for generating light. The thin film layer 212 is made of a high-transparency material, such as silicon oxide, and is used for protecting the light-emitting layer 211, isolating water and oxygen, and providing necessary physical strength. The filter layer 214 is made of a color filter, and is used for selectively filtering and transmitting light of a specific color to achieve full-color display. Meanwhile, a touch layer 213 is arranged between the thin film layer 212 and the filter layer 214 to meet the needs of touch operation of some display panels. Of course, the present application is described by taking an OLED display panel as an example, and the composition of the pixel unit 21 can be adjusted accordingly when the display panel is an LED or an LCD.

[0061] A light-blocking layer 40 is arranged between each pixel unit 21 to prevent light crosstalk and improve the contrast of the display panel. The adjustment module 30 is arranged in the light-blocking layer 40 to avoid affecting the display of the pixel unit 21 and improve the effect of preventing light crosstalk, thereby improving the contrast of the display panel.

[0062] The light-blocking layer 40 can be made of a material that absorbs light, such as carbon black-doped polymer, i.e., the black matrix (BM) in the OLED display panel. It can prevent light leakage and cross interference between pixels, and also absorb excess ambient light entering from the outside of the display panel. In other embodiments, the adjustment module 30 can be arranged on the pixel isolation layer 50 to improve the contrast, or arranged above the light-blocking layer 40, i.e., in the optically clear adhesive (OCA) layer.

[0063] In combinationFigures 1 to 5 As shown in the embodiment of the present application, the light shielding layer 40 is provided with an interference groove, and the adjusting module 30 is embedded in the interference groove, and the first film layer 31 and the second film layer 32 are connected with the opposite two sidewalls of the interference groove.

[0064] In the embodiment, the interference groove is designed to embed the adjusting module 30 in the light shielding layer 40, so as to provide a space for the adjusting module 30, and meanwhile, the first film layer 31 and the second film layer 32 are enclosed with the groove wall of the interference groove to form the optical microcavity 33. The integrated design helps to improve the integration and structural stability of the display panel. The light propagates in the optical microcavity 33, and the optical microcavity 33 can reduce the influence of other light on the interference light. Meanwhile, the optical microcavity 33 also has the effect of limiting the propagation path of the light in the cavity and reducing the scattering of the light, so as to improve the control of the light propagation path and improve the interference effect.

[0065] In combination with Figures 3 to 5 As shown in the embodiment of the present application, the cross-sectional size of the interference groove gradually increases along the direction away from the substrate 10.

[0066] In the embodiment, the interference groove is designed to gradually increase the cross-sectional size from one end close to the substrate 10 to the other end away from the substrate 10, forming a wedge-like structure. This design helps to reduce the reflection loss of the light in the groove, and at the same time, increases the angle range of the light incident to the optical microcavity 33, so that the light of different wavelengths from different angles incident to the interference groove can all effectively interfere in the optical microcavity 33, thereby improving the color saturation and contrast of the display panel.

[0067] As Figure 3 As shown, the shape of the interference groove is trapezoidal, the light is incident into the adjusting module 30 from the opening of the interference groove, part of the light wave is reflected out of the display panel after passing through the electrode layer 34 and the first film layer 31, and part of the light wave passes through the electrode layer 34, the first film layer 31, the optical microcavity 33 and the second film layer 32 in turn, and is reflected to pass through the first film layer 31, the electrode layer 34, and finally out of the display panel. The light wave reflected by the first film layer 31 and the second film layer 32 undergoes constructive interference or destructive interference. As Figure 4 、 Figure 5 As shown, the interference groove can also be designed in a circular arc shape or a triangular shape, which can also achieve the effect of expanding the angle range of the external light, thereby further improving the brightness and contrast of the display panel.

[0068] The present application also provides a manufacturing method of a display panel, wherein the specific structure of the display panel refers to the above-mentioned embodiments. Since the manufacturing method adopts all the technical solutions of the above-mentioned display panel embodiments, it at least has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be repeated here.

[0069] As shown in Figure 6 The manufacturing method comprises the steps of:

[0070] S10: depositing a light-emitting module 20 comprising a plurality of pixel units 21 on the surface of the substrate 10;

[0071] S20: sequentially depositing a first film layer 31 and a second film layer 32 arranged in intervals between each two pixel units 21 to form an adjustment module 30.

[0072] In this embodiment, taking an OLED display panel as an example, the light-emitting module 20 comprises a light-emitting layer 211, a pixel isolation layer 50, a thin film layer 212, a touch layer 213 and a filter layer 214 sequentially deposited on the surface of the substrate 10. The deposition process can adopt physical vapor deposition (PVD) or chemical vapor deposition (CVD) technology to ensure the uniformity and adhesion of the film layer.

[0073] On the filter layer 214, and between each two pixel units 21, a slot is formed, and a light-blocking layer 40 is deposited to prevent light mixing between the pixel units 21. Then, an interference groove is etched on the surface of the light-blocking layer 40, and the second film layer 32 and the first film layer 31 are sequentially deposited in the interference groove to form the adjustment module 30. Finally, a transparent adhesive is coated on the surface of the filter layer 214 to form a transparent adhesive layer 60, and a glass cover plate 70 is attached to the transparent adhesive layer 60 to complete the packaging of the display panel.

[0074] As shown in Figure 7 In an embodiment of the present application, the step of sequentially depositing a first film layer 31 and a second film layer 32 arranged in intervals between each two pixel units 21 to form an adjustment module 30 comprises:

[0075] S21: etching an interference groove on the light-blocking layer 40 between two adjacent pixel units 21;

[0076] S22: sequentially depositing an electrode layer 34, a first sacrificial layer, a second film layer 32, a second sacrificial layer, a first film layer 31 and another electrode layer 34 in the interference groove;

[0077] S23: etching the first sacrificial layer and the second sacrificial layer by wet etching, and forming an optical microcavity 33 between the first film layer 31 and the second film layer 32.

[0078] In this embodiment, the interference groove can be formed on the light-blocking layer 40 by a dry etching process. The dry etching forms the interference groove by ion bombardment, which can improve the size accuracy of the interference groove compared with the wet etching process by etching solvent.

[0079] After the formation of the interference groove, the electrode layer 34, the sacrificial layer, the second film layer 32, another sacrificial layer and the first film layer 31 are sequentially deposited at the bottom of the groove. The deposition process includes physical vapor deposition (PVD) or chemical vapor deposition (CVD) or atomic layer deposition (ALD). The selection of the sacrificial layer needs to consider that the etching solvent can dissolve the sacrificial layer and leave the electrode layer 34, the first film layer 31 and the second film layer 32, for example, photoresist, polymer or other organic solvent-soluble materials. The sacrificial layer is removed by wet etching to form the optical microcavity 33 and form a gap between the second film layer 32 and the other electrode layer 34 to meet the requirement that the second film layer 32 can move towards the first film layer 31 under the action of the electric field.

[0080] The application further provides a display device, which comprises a display panel. The display panel has the specific structure as described in the above embodiments. Since the display device adopts all the technical solutions of the above embodiments, it has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here.

[0081] The display device can be a smart phone, a tablet computer, a television or other display equipment. The display device further comprises necessary driving circuit 12, control unit and interface to realize connection and data transmission with external equipment. By integrating the display panel provided in the application, the display device can provide high contrast, high color accuracy, high brightness, low power consumption and other effects in strong light environment.

[0082] The above description is only exemplary embodiments of the application, and does not limit the patent scope of the application. Any equivalent structural transformation made by using the content of the specification and drawings, or direct / indirect application in other related technical fields is included in the patent protection scope of the application.

Claims

1. A display panel, characterized by, The display panel comprises: a substrate; a light-emitting module disposed on a surface of the substrate, the light-emitting module comprising a plurality of pixel units, each of the pixel units being arranged in an array along a direction parallel to the substrate; and a plurality of adjusting modules, each of the adjusting modules being disposed between two adjacent pixel units, each of the adjusting modules comprising a first film layer and a second film layer disposed in a first direction, the first film layer being a semi-transparent and semi-reflective film, and the second film layer being a full-reflective film. Each of the adjusting modules further comprises two electrode layers, one of the electrode layers being disposed on a side of the first film layer away from the substrate, and the other of the electrode layers being disposed on a side of the second film layer facing the substrate. At least part of a material of at least one of the first film layer and the second film layer is a deformable metal material, and the first film layer and the second film layer are capable of moving closer to or farther away from each other under an electric field generated by the two electrode layers, so as to adjust a distance between the first film layer and the second film layer. A material of the second film layer near two ends of the two pixel units is a deformable metal material, and a material of a remaining part of the second film layer is a non-deformable metal material. External light is sequentially incident on surfaces of the first film layer and the second film layer, and light reflected by the second film layer interferes with light reflected by the first film layer.

2. The display panel of claim 1, wherein, Each of the pixel units comprises, in sequence along the first direction, a light-emitting layer, a thin film layer, and a filter layer. Each of the adjusting modules is disposed in a light-shielding layer and exposed on a side of the light-shielding layer away from the thin film layer.

3. The display panel of claim 2, wherein, The light-shielding layer is provided with an interference groove, and each of the adjusting modules is embedded in the interference groove, and two sides of the first film layer and the second film layer are connected to opposite sidewalls of the interference groove.

4. The display panel of claim 3, wherein, A cross-sectional dimension of the interference groove gradually increases in a direction away from the substrate.

5. The display panel of claim 4, wherein, A longitudinal cross-sectional shape of the interference groove is trapezoidal, triangular, or circular arc-shaped.

6. A method for manufacturing the display panel according to any one of claims 1 to 5, characterized by, The manufacturing method comprises the following steps: depositing, on a surface of a substrate, a light-emitting module comprising a plurality of pixel units; etching an interference groove in a light-shielding layer between two adjacent pixel units; sequentially depositing, in the interference groove, an electrode layer, a first sacrificial layer, a second film layer, a second sacrificial layer, a first film layer, and another electrode layer; etching away the first sacrificial layer and the second sacrificial layer by wet etching, and forming an optical microcavity between the first film layer and the second film layer, the first film layer, the second film layer, and the two electrode layers forming an adjusting module, the first film layer being a semi-transparent and semi-reflective film, and the second film layer being a full-reflective film, external light being sequentially incident on surfaces of the first film layer and the second film layer, and light reflected by the second film layer interfering with light reflected by the first film layer.

7. A display device, characterized by comprising: The display device comprises the display panel according to any one of claims 1 to 5.

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