Display panel, manufacturing method thereof and display device

Abstract

The invention discloses a display panel, a manufacturing method thereof and a display device, and relates to the technical field of display, 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, and the pixel units are arranged at intervals in an array mode in the 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 which are arranged at an interval along 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 rays sequentially irradiate the surfaces of the first film layer and the second film layer, and light rays reflected by the second film layer interfere with light rays reflected by the first film layer. According to the display panel, constructive interference and destructive interference of light rays are utilized, the problem that an existing display panel displays dim light under strong light is solved, and the display effect is improved.

Description

Technical Field

[0001] The present invention relates to the field of display technology, and in particular to a display panel and a manufacturing method thereof, and a display device. Background Art

[0002] As one of the most advanced display technologies, Organic Light-Emitting Diode (OLED) has been widely used in many fields due to its unique advantages. OLED screens provide users with excellent visual experience with their fast response time, wide viewing angle, high contrast, and energy-saving and environmentally friendly characteristics.

[0003] However, despite the excellent performance of OLED technology in many aspects, OLED display panels also have obvious defects compared with other types of display panels on the market: OLED screens are usually low in brightness, which is particularly obvious in strong light environments. When an OLED screen is exposed to direct sunlight or other strong light sources, the screen brightness is not enough to provide a clear visual experience, causing the screen content to appear dim, affecting the user's viewing experience, which limits the application of OLED technology in outdoor or high-brightness demand scenes. Summary of the invention

[0004] The main purpose of the present invention is to provide a display panel and a manufacturing method thereof, as well as a display device, in order to solve the problem that the existing display panel displays dimly in a strong light environment.

[0005] In order to achieve the above-mentioned object, the present invention provides a display panel, wherein the display panel comprises:

[0006] substrate;

[0007] A light emitting module, the light emitting module is disposed on the surface of the substrate, the light emitting module comprises a plurality of pixel units, and the pixel units are arranged in an array at intervals along a direction parallel to the substrate; and

[0008] A plurality of adjustment modules, each of which is disposed between two adjacent pixel units, and the adjustment module comprises a first film layer and a second film layer spaced apart along a first direction, the first film layer is a semi-transmissive and semi-reflective film, and the second film layer is a fully reflective film;

[0009] External light is sequentially irradiated onto 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 one embodiment of the present invention, the regulating module further comprises two electrode layers, one of the electrode layers is located on a side of the first film layer facing away from the substrate, and the other of the electrode layers is located on a side of the second film layer facing the substrate;

[0011] At least part of at least one of the first film layer and the second film layer is made of a deformable metal material. The first film layer and the second film layer move closer to or farther from each other under the action of the electric field of the two electrode layers to adjust the distance between the first film layer and the second film layer.

[0012] In one embodiment of the present invention, the material of the second film layer at two ends close to the two pixel units is a deformable metal material, and the material of the remaining portion is a non-deformable metal material.

[0013] In one embodiment of the present invention, each of the pixel units comprises a light emitting layer, a thin film layer and a filter layer arranged in sequence along the first direction;

[0014] A light shielding layer is disposed between the two filter layers of any two adjacent pixel units, and each of the adjustment modules is disposed in one of the light shielding layers and exposed on a side of the light shielding layer away from the film layer.

[0015] In one embodiment of the present invention, the light shielding layer is provided with an interference groove, the adjustment module is embedded in the interference groove, and both sides of the first film layer and the second film layer are connected to opposite side walls of the interference groove.

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

[0017] In one embodiment of the present invention, the longitudinal cross-section of the interference groove is trapezoidal, triangular or arc-shaped.

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

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

[0020] A first film layer and a second film layer which are spaced apart are sequentially deposited between every two pixel units to form an adjustment module.

[0021] In one embodiment of the present invention, the step of sequentially depositing a first film layer and a second film layer spaced apart between every two pixel units to form an adjustment module includes:

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

[0023] Depositing 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 in sequence;

[0024] The first sacrificial layer and the second sacrificial layer are etched away by wet etching, and an optical microcavity is formed between the first film layer and the second film layer.

[0025] The present invention further provides a display device, comprising any one of the display panels described above.

[0026] The display panel proposed by the present invention includes a substrate, a light-emitting module and a plurality of adjustment modules, wherein the light-emitting module is encapsulated on the surface of the substrate, and the light-emitting module includes at least an anode layer, an organic light-emitting layer and a cathode layer, and the organic light-emitting layer generates visible light under the action of the electric field of the anode layer and the cathode layer. The light-emitting module can be split into a plurality of pixel units, each of which can be individually controlled to emit light, and a plurality of pixel units are arranged in an array on the surface of the substrate in a direction parallel to the substrate. Each adjustment module is respectively arranged between two adjacent pixel units, and the adjustment module includes a first film layer and a second film layer which are sequentially spaced apart along a first direction (i.e., a direction perpendicular to the surface of the substrate). The first film layer is a half-head and half-reflective film, and the second film layer is a full-reflective film, and an optical microcavity is formed between the first film layer and the second film layer.

[0027] When external light shines on the surface of the display panel, the light first shines on the surface of the first film layer, and some wavelengths of light are reflected by the first film layer, and the remaining wavelengths of light are transmitted into the optical microcavity by the first film layer, and then are completely 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 will interfere with each other, among which some wavelengths of light will interfere constructively, and the remaining wavelengths of light will interfere destructively. Through constructive interference, the human eye will receive a color of a specific wavelength, including red, green and blue, to improve penetration, and can reduce the power consumption of the display panel at the same time. Through destructive interference, black will be generated to improve the contrast and color gamut of the display panel. This solves the problem that the existing display panel displays dimly under strong light, improves the user experience, and increases the application scenarios of OLED display panels. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0029] Figure 1 A schematic structural diagram of an embodiment of a display panel provided by the present invention;

[0030] Figure 2A schematic structural diagram of an embodiment of a light shielding layer and an adjustment module in a display panel provided by the present invention;

[0031] Figure 3 A schematic structural diagram of another embodiment of a light shielding layer and an adjustment module in a display panel provided by the present invention;

[0032] Figure 4 A schematic structural diagram of another embodiment of a light shielding layer and an adjustment module in a display panel provided by the present invention;

[0033] Figure 5 A schematic structural diagram of another embodiment of a light shielding layer and an adjustment module in a display panel provided by the present invention;

[0034] Figure 6 A flow chart of an embodiment of a method for manufacturing a display panel provided by the present invention;

[0035] Figure 7 The present invention is a flow chart of another embodiment of the method for manufacturing a display panel provided by the present invention.

[0036] Description of Figure Numbers:

[0037] 10. Substrate; 11. Underlying layer; 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. Adjustment module; 31. First film layer; 32. Second film layer; 33. Optical microcavity; 34. Electrode layer; 40. Shading layer; 50. Pixel isolation layer; 60. Transparent adhesive layer; 70. Glass cover.

[0038] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] It should be noted that if the embodiments of the present invention 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 status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0041] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0042] The invention provides a display panel.

[0043] Combination Figure 1 As shown, in one embodiment of the present invention, the display panel includes a substrate 10, a light-emitting module 20 and a plurality of adjustment modules 30; the light-emitting module 20 is arranged on the surface of the substrate 10, and the light-emitting module 20 includes a plurality of pixel units 21, and each pixel unit 21 is arranged in an array spaced apart in a direction parallel to the substrate 10; each adjustment module 30 is respectively arranged between two adjacent pixel units 21, and the adjustment module 30 includes a first film layer 31 and a second film layer 32 spaced apart 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 fully reflective film; external light is sequentially irradiated on the surfaces 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 may be an LCD, LED or OLED display panel. Since the brightness of the OLED display panel is relatively low, the technical solution proposed in this application will have a more obvious improvement effect on the low brightness of the OLED in a strong light environment.

[0045] In this embodiment, the substrate 10 includes 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. The layers in the light-emitting module 20 are sequentially deposited on the substrate 10, and generate visible light under the drive of the driving circuit 12. Each pixel unit 21 in the light-emitting module 20 can be individually controlled to emit light to present images of different colors on the display panel. The pixel units 21 are separated and spaced apart by a pixel isolation layer 50 to avoid light mixing between adjacent pixel units 21 and improve the contrast of the display panel. The first direction is Figure 1 Middle X direction.

[0046] The adjustment module 30 provided in the present application utilizes the principle of light interference to improve the problem of whitening, graying, and low brightness of the screen surface. Specifically, the first film layer 31 in the adjustment module 30 is a semi-transparent and semi-reflective film, such as a thin layer of titanium dioxide, silicon dioxide, or zinc oxide. The second film layer 32 is a fully reflective film, which is made of silver or aluminum, or is plated with silver or aluminum. When strong light from the outside is irradiated on the display panel, the light is irradiated on the first film layer 31. Since the first film layer 31 is a semi-transparent and semi-reflective film, the light waves will be transmitted and reflected on the first film layer 31. The light waves transmitted from the first film layer 31 are fully reflected when passing through the second film layer 32, and are transmitted from the first film layer 31 to the outside of the display panel.

[0047] Therefore, the distance between the first film layer 31 and the second film layer 32 can be controlled so that the light waves reflected by the first film layer 31 and the light waves reflected by the second film layer 32 will interfere with each other, wherein some wavelengths of light will interfere constructively, and the remaining wavelengths of light will interfere destructively. Through constructive interference, the human eye will receive a color of a specific wavelength, including red, green and blue, to improve penetration, and can also reduce the power consumption of the display panel at the same time. Through destructive interference, black will be generated to improve the contrast and color gamut of the display panel. This solves the problem that the existing display panel is dim under strong light, improves the user experience and increases the application scenarios of OLED display panels.

[0048] Furthermore, the first film layer 31 is formed by stacking multiple layers of thin films, each layer of which is made of different materials and therefore has different refractive indices. When light waves are incident on such a multilayer film structure, multiple reflections and transmissions will occur. Therefore, light waves between different layers will also interfere with each other. Depending on the phase difference of the light waves, light of certain wavelengths will interfere constructively, while light of other wavelengths will interfere destructively.

[0049] Furthermore, the adjustment module 30 is arranged between any two adjacent pixel units 21 of the display panel to prevent the reflectivity of the first film layer 31 and the second film layer 32 from affecting the light emission of each pixel unit 21. Of course, an adjustment module 30 can also be arranged between every two adjacent pixel units 21. The adjustment module is arranged between each pixel unit 21. When the light waves reflected by the first film layer 31 and the second film layer 32 undergo destructive interference, the surface of the first film layer 31 displays a black state, which can further prevent the two adjacent pixel units 21 from mixing colors, so as to improve the contrast and color gamut of the display panel. By adjusting the distance between the first film layer 31 and the second film layer 32, it is possible to achieve constructive interference of light of a specific wavelength to improve the brightness of the display panel.

[0050] Combination Figures 2 to 5As shown, in one embodiment of the present invention, the adjustment module 30 further includes two electrode layers 34, one electrode layer 34 is located on a side of the first film layer 31 away from the substrate 10, and the other electrode layer 34 is located on a side of the second film layer 32 facing the substrate 10;

[0051] At least part of at least one of the first film layer 31 and the second film layer 32 is made of a deformable metal material. The first film layer 31 and the second film layer 32 move closer to or farther from each other under the action of the electric field of the two electrode layers 34 to adjust the distance between the first film layer 31 and the second film layer 32 .

[0052] In order to achieve the purpose of adjusting the distance between the first film layer 31 and the second film layer 32, in this 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 layers 34 are made of transparent conductive oxide (Transparent Conductive Oxides, TCO) materials, such as indium tin oxide (ITO) or doped zinc oxide, and have good visible light transmittance and conductivity. These materials have high transparency in the visible spectrum range and can effectively conduct current, so that it can ensure that light can be smoothly injected from the electrode layer 34 into the first film layer 31, and an electric field can be 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, and applying voltage between the two electrode layers 34, the first film layer 31 and the second film layer 32 can be designed to be partially made of deformable metal material, or one of them can be designed to be partially made of 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 or away from each other, thereby adjusting the distance between the first film layer 31 and the second film layer 32 to achieve dynamic color and brightness control.

[0054] By controlling the voltage applied to the two electrode layers 34, the film layer spacing can be precisely adjusted to achieve dynamic control of the color and brightness of the display panel. This electric field regulation mechanism enables the display panel to maintain high brightness, high contrast and color accuracy under different ambient lighting conditions.

[0055] In one embodiment of the present invention, the material of the second film layer 32 at two ends close to the two pixel units 21 is a deformable metal material, and the material of the remaining portion is a non-deformable metal material.

[0056] In this embodiment, both ends of the second film layer 32 are made of deformable metal materials, such as an alloy with shape memory function, so that the second film layer 32 can undergo micron-level or nano-level deformation under the action of an electric field, thereby finely adjusting the distance between the second film layer 32 and the first film layer 31 to achieve smoother color transitions and higher display resolution.

[0057] The material of the rest of the second film layer 32 is a non-deformable or non-deformable metal material, such as aluminum or silver, so that after the second film layer 32 is deformed toward the first film layer 31, the side of the middle of the second film layer 32 facing the first film layer 31 remains flat, so as to accurately control the propagation path of the light wave without changing the size and shape of the light beam, thereby improving the control accuracy of the above-mentioned light wave interference.

[0058] Combination Figure 1 As shown, in one embodiment of the present invention, 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 shielding layer 40 is disposed between the two filter layers 214 of any two adjacent pixel units 21 . Each adjustment module 30 is disposed in a light shielding layer 40 and exposed at a side of the light shielding layer 40 away from the film layer 212 .

[0060] In the present embodiment, each pixel unit 21 is composed of a multi-layer structure, 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 highly transparent material, such as silicon oxide, which is used to protect the light-emitting layer 211, isolate water and oxygen, and provide the necessary physical strength. The filter layer 214 uses a color filter to selectively filter and transmit light of a specific color to achieve a full-color display. At the same time, a touch layer 213 is also provided between the thin film layer 212 and the filter layer 214 to meet the requirements of certain display panels for touch operations. Of course, the present application uses the OLED display panel as an example to illustrate the technical solution. When the display panel is an LED or LCD, the composition of its pixel unit 21 can also be adjusted accordingly.

[0061] A light shielding layer 40 is disposed between each pixel unit 21 to prevent light crosstalk and improve the contrast of the display panel. The adjustment module 30 is disposed in the light shielding layer 40 to prevent the adjustment module 30 from 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 shielding layer 40 can be made of a material that absorbs light, such as a carbon black-doped polymer, which is also the black matrix (BM) in the OLED display panel. It prevents light leakage and cross-interference between pixels, and absorbs excess ambient light entering from outside the display panel. In other embodiments, the adjustment module 30 can also be set on the pixel isolation layer 50, which can improve the contrast, and can also be set above the light shielding layer 40, that is, in the transparent adhesive layer 60 (Optically Clear Adhesive, OCA).

[0063] Combination Figures 1 to 5 As shown, in one embodiment of the present invention, the light shielding layer 40 is provided with an interference groove, the adjustment module 30 is embedded in the interference groove, and both sides of the first film layer 31 and the second film layer 32 are connected to the opposite side walls of the interference groove.

[0064] In this embodiment, the interference groove is designed so that the adjustment module 30 is embedded in the light shielding layer 40, providing a space for the adjustment module 30 to be set, and at the same time, the first film layer 31 and the second film layer 32 are enclosed with the groove wall of the interference groove to form an optical microcavity 33. This integrated design helps to improve the integration and structural stability of the display panel. Light propagates in the optical microcavity 33, and the optical microcavity 33 can reduce the influence of other light on the interference light; at the same time, the optical microcavity 33 also has the effect of limiting the propagation path of light in the cavity and reducing the scattering of light, so as to improve the control of the light propagation path and improve the interference effect.

[0065] Combination Figures 3 to 5 As shown, in one embodiment of the present invention, the cross-sectional dimension of the interference groove gradually increases in a direction away from the substrate 10 .

[0066] In this embodiment, the design of the interference groove makes its cross-sectional size gradually increase 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 light in the groove, and at the same time increases the angle range of light incident on the optical microcavity 33, so that light of different wavelengths incident on the interference groove from different angles can effectively interfere in the optical microcavity 33, thereby improving the color saturation and contrast of the display panel.

[0067] like Figure 3 As shown, the shape of the interference groove is a trapezoid. Light is incident into the adjustment module 30 from the opening of the interference groove. Some light waves pass through the electrode layer 34 and the first film layer 31 and are reflected out of the display panel. Some light waves pass through the electrode layer 34, the first film layer 31, the optical microcavity 33, and the second film layer 32 in sequence, and are reflected to pass through the first film layer 31, the electrode layer 34, and finally emitted from the display panel. The light waves reflected by the first film layer 31 and the second film layer 32 undergo constructive interference or destructive interference. Figure 4 , Figure 5 As shown, the interference groove can also be designed to be an arc shape or a triangle shape, both of which can achieve the above-mentioned effect of expanding the incident angle range of external light, thereby further improving the brightness and contrast of the display panel.

[0068] The present invention also proposes a method for manufacturing a display panel, wherein the specific structure of the display panel refers to the above-mentioned embodiment. Since this manufacturing method adopts all the technical solutions of all 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 one by one.

[0069] Among them, combined Figure 6 As shown, the production method comprises the steps of:

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

[0071] S20 : ​​sequentially depositing a first film layer 31 and a second film layer 32 that are spaced apart between every two pixel units 21 to form an adjustment module 30 .

[0072] In this embodiment, taking the OLED display panel as an example, the light-emitting module 20 includes a light-emitting layer 211, a pixel isolation layer 50, a thin film layer 212, a touch layer 213 and a filter layer 214 deposited in sequence 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, grooves are formed between every two pixel units 21, and a light shielding layer 40 is deposited to prevent light mixing between the pixel units 21. Then, interference grooves are etched on the surface of the light shielding layer 40, and the second film layer 32 and the first film layer 31 are sequentially deposited in the interference grooves to form the adjustment module 30. Finally, a transparent adhesive is applied to the surface of the filter layer 214 to form a transparent adhesive layer 60, and then a glass cover plate 70 is attached to the transparent adhesive layer 60 to complete the packaging of the display panel.

[0074] Combination Figure 7 As shown, in one embodiment of the present invention, the step of sequentially depositing a first film layer 31 and a second film layer 32 spaced apart between every two pixel units 21 to form the adjustment module 30 includes:

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

[0076] S22: 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 sequence in the interference groove;

[0077] S23 : etching away 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 shielding layer 40 by dry etching. Dry etching forms the interference groove by ion bombardment. Compared with the wet etching process using a corrosive solvent, the dimensional accuracy of the interference groove can be improved.

[0079] After the interference groove is formed, the electrode layer 34, the sacrificial layer, the second film layer 32, another sacrificial layer and the first film layer 31 are deposited in sequence at the bottom of the groove, and 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 retain the electrode layer 34, the first film layer 31 and the second film layer 32, such as photoresist, polymer or other organic solvent soluble materials. The sacrificial layer is removed by wet etching to form an optical microcavity 33, and a gap is formed between the second film layer 32 and the other electrode layer 34 to meet the requirement that the second film layer 32 can move toward the first film layer 31 under the action of the electric field.

[0080] The present invention also proposes a display device, which includes a display panel. The specific structure of the display panel refers to the above-mentioned embodiment. Since the display device adopts all the technical solutions of all the above-mentioned embodiments, it has at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be described one by one here.

[0081] The display device may be a smart phone, a tablet computer, a television or other display device. The display device also includes a necessary driving circuit 12, a control unit and an interface to achieve connection with an external device and data transmission. By integrating the display panel proposed in the present application, the display device can provide high contrast, high color accuracy, high brightness and low power consumption in a strong light environment.

[0082] The above description is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention and the drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A display panel, characterized in that: The display panel comprises: substrate; A light emitting module, the light emitting module is disposed on the surface of the substrate, the light emitting module comprises a plurality of pixel units, and the pixel units are arranged in an array at intervals along a direction parallel to the substrate; and A plurality of adjustment modules, each of which is disposed between two adjacent pixel units, and the adjustment module comprises a first film layer and a second film layer spaced apart along a first direction, the first film layer is a semi-transmissive and semi-reflective film, and the second film layer is a fully reflective film; External light is sequentially irradiated onto 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.

2. The display panel according to claim 1, wherein: The regulating module further comprises two electrode layers, one of the electrode layers is located on a side of the first film layer facing away from the substrate, and the other of the electrode layers is located on a side of the second film layer facing the substrate; At least part of at least one of the first film layer and the second film layer is made of a deformable metal material. The first film layer and the second film layer move closer to or farther from each other under the action of the electric field of the two electrode layers to adjust the distance between the first film layer and the second film layer.

3. The display panel according to claim 2, wherein: The material of the second film layer at two ends close to the two pixel units is a deformable metal material, and the material of the remaining part is a non-deformable metal material.

4. The display panel according to any one of claims 1 to 3, characterized in that: Each of the pixel units comprises a light emitting layer, a thin film layer and a filter layer sequentially arranged along the first direction; A light shielding layer is disposed between the two filter layers of any two adjacent pixel units, and each of the adjustment modules is disposed in one of the light shielding layers and exposed on a side of the light shielding layer away from the film layer.

5. The display panel according to claim 4, wherein: The light shielding layer is provided with an interference groove, the adjustment module is embedded in the interference groove, and both sides of the first film layer and the second film layer are connected to opposite side walls of the interference groove.

6. The display panel according to claim 5, wherein: The cross-sectional dimension of the interference groove gradually increases along a direction away from the substrate.

7. The display panel according to claim 6, wherein: The longitudinal section of the interference groove is in the shape of a trapezoid, a triangle or an arc.

8. A method for manufacturing a display panel, characterized in that: The production method comprises the steps of: Depositing a light-emitting module including a plurality of pixel units on a surface of a substrate; A first film layer and a second film layer which are spaced apart are sequentially deposited between every two pixel units to form an adjustment module.

9. The method for manufacturing a display panel according to claim 8, wherein: The step of sequentially depositing a first film layer and a second film layer spaced apart between every two pixel units to form an adjustment module includes: Etching an interference groove on the light shielding layer between two adjacent pixel units; Depositing 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 in sequence; The first sacrificial layer and the second sacrificial layer are etched away by wet etching, and an optical microcavity is formed between the first film layer and the second film layer.

10. A display device, characterized in that: The display device comprises the display panel according to any one of claims 1 to 7.

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