Display panel and display device

Abstract

Embodiments of the present application disclose a display panel and a display device. The display panel comprises a substrate, a plurality of light emitting units, a plurality of light shielding units and a plurality of color filter units arranged in sequence on one side of the substrate; the light shielding unit is located between two adjacent color filter units, the color filter unit covers the light emitting unit along the thickness direction of the display panel; the display panel further comprises a light adjusting unit, the light adjusting unit is in contact with the color filter unit, the refractive index of the light adjusting unit is greater than that of the color filter unit; the light adjusting unit at least covers the sidewall of the light shielding unit and comprises an adjusting sidewall, the plane where the adjusting sidewall is located intersects with the plane where the substrate is located. By setting the light adjusting unit, the light path of the external ambient light incident to the display panel and the light path of the light emitted by the light emitting unit are adjusted, the emission rate of the external ambient light is reduced, the side viewing angle light emission of the display panel is improved, and the display effect of the display panel is ensured.

Description

Technical Field

[0001] Embodiments of the present invention relate to the technical field of display panels, and more particularly to a display panel and a display device. Background Art

[0002] OLED (Organic Light Emitting Diode) display panels are self-luminous display devices that do not require a backlight. Compared to traditional LCD panels, OLED display panels are lighter and thinner. They also offer advantages such as high brightness, low power consumption, wide viewing angles, fast response times, and a wide operating temperature range. Although OLED display panels have high color purity and color gamut, they are prone to color separation during the display process, which affects the display quality. Summary of the Invention

[0003] Embodiments of the present invention provide a display panel and a display device, which improve the display effect of the display panel by adding a light adjustment unit to adjust the light path of external ambient light incident on the display panel and adjust the light path of light emitted by the light emitting unit.

[0004] In a first aspect, an embodiment of the present invention provides a display panel, comprising a base substrate, and a plurality of light-emitting units, a plurality of light-shielding units, and a plurality of color filter units sequentially located on one side of the base substrate; the light-shielding unit is located between two adjacent color filter units, and along the thickness direction of the display panel, the color filter unit covers the light-emitting unit;

[0005] The display panel also includes a light adjustment unit, which is in contact with the color filter unit and has a refractive index greater than that of the color filter unit; the light adjustment unit at least covers the side wall of the shading unit and includes an adjustment side wall, and the plane where the adjustment side wall is located intersects with the plane where the base substrate is located.

[0006] In a second aspect, an embodiment of the present invention further provides a display device, comprising the display panel described in any one of the first aspects.

[0007] The display panel provided by the present invention includes a plurality of light-emitting units, a plurality of shading units, and a plurality of color filter units sequentially arranged along the thickness direction of the display panel; the shading unit is located between two adjacent color filter units to avoid light crosstalk between emitted light of different colors; the color filter unit covers the light-emitting unit to ensure the color purity of the light emitted by the light-emitting unit. The display panel also includes a light adjustment unit, which at least covers the side walls of the shading unit and contacts the color filter unit. The plane where the adjustment side walls of the light adjustment unit are located intersects with the plane where the substrate is located. Part of the light emitted by the light-emitting unit enters the adjustment side walls of the light adjustment unit. Since the refractive index of the light adjustment unit is greater than that of the color filter unit, the light is deflected, increasing the side view of the light output and avoiding the color separation phenomenon of the display panel output. At the same time, the external ambient light incident on the light adjustment unit through the color filter unit is also deflected, reducing the reflection of the external ambient light and ensuring the display effect of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, although the drawings described below are some specific embodiments of the present invention, for those skilled in the art, the basic concepts of the device structure, driving method and manufacturing method disclosed and suggested by the various embodiments of the present invention can be expanded and extended to other structures and drawings. Undoubtedly, these should all be within the scope of the claims of the present invention.

[0009] Figure 1 This is a schematic structural diagram of a display panel in the prior art;

[0010] Figure 2 A schematic structural diagram of a display panel provided by an embodiment of the present invention;

[0011] Figure 3 A schematic diagram of a top view of a display panel provided by an embodiment of the present invention

[0012] Figure 4 A schematic structural diagram of another display panel provided by an embodiment of the present invention;

[0013] Figure 5 A schematic structural diagram of another display panel provided by an embodiment of the present invention;

[0014] Figure 6 A schematic structural diagram of another display panel provided by an embodiment of the present invention;

[0015] Figure 7 A schematic structural diagram of another display panel provided by an embodiment of the present invention;

[0016] Figure 8 A schematic structural diagram of another display panel provided by an embodiment of the present invention;

[0017] Figure 9 A schematic structural diagram of a display device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0018] To make the objectives, technical solutions, and advantages of the present invention more clear, the following will refer to the accompanying drawings of the embodiments of the present invention to clearly and completely describe the technical solutions of the present invention through implementation methods. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the basic concepts disclosed and suggested by the embodiments of the present invention, all other embodiments obtained by those skilled in the art are within the scope of protection of the present invention.

[0019] Figure 1 FIG. 1 is a schematic diagram of a structure of a display panel in the prior art. Figure 1 As shown, along the thickness direction of the display panel 10, the display panel 10 includes, in sequence, a substrate 11, a light emitting unit 12 located on one side of the substrate 11, a color resist unit 13, and a light shielding unit 14 located between adjacent color resist units 13. In the display panel 10 of the prior art, the light emitted by the light emitting unit 12 passes through the light shielding unit 14 having a certain thickness, which will hinder the light from being emitted at a large angle, affecting the display brightness of the display panel 10 at a large viewing angle. At the same time, for the external ambient light incident on the display panel 10, when it is reflected in the display panel 10, it is easy to cause unilateral diffraction at the light shielding unit 14. The diffracted light and the reflected light exist at the same time, which is easy to cause color separation, seriously affecting the display effect of the display panel 10.

[0020] In view of the problems of the background technology, an embodiment of the present invention provides a display panel including a base substrate and a plurality of light-emitting units, a plurality of shading units, and a plurality of color filter units sequentially located on one side of the base substrate; the shading unit is located between two adjacent color filter units, and along the thickness direction of the display panel, the color filter unit covers the light-emitting unit; the display panel also includes a light adjustment unit, the light adjustment unit is in contact with the color filter unit, and the refractive index of the light adjustment unit is greater than the refractive index of the color filter unit; the light adjustment unit at least covers the side wall of the shading unit and the light adjustment unit includes an adjustment side wall, and the plane where the adjustment side wall is located intersects with the plane where the base substrate is located. By setting the light adjustment unit to adjust the optical path of the external ambient light incident on the display panel and the optical path of the light emitted by the light-emitting unit, the emission probability of the external ambient light is reduced, and at the same time, the side view light emission of the display panel is improved, thereby ensuring the display effect of the display panel.

[0021] The above is the core concept of this application. The following will be combined with the accompanying 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0022] Figure 2 A schematic structural diagram of a display panel provided by an embodiment of the present invention is shown in FIG. Figure 3 A schematic diagram of a top view structure of a display panel provided by an embodiment of the present invention, as shown in FIG. Figure 3 As shown, the display panel 100 includes a base substrate 101 and a plurality of light emitting units 102, a plurality of light shielding units 103 and a plurality of color filter units 104 sequentially located on one side of the base substrate 101; the light shielding unit 103 is located between two adjacent color filter units 104, and is arranged along the thickness direction of the display panel 100 (e.g., Figure 2 ), the color filter unit 104 covers the light-emitting unit 102; the display panel 100 further includes a light adjustment unit 105, which is in contact with the color filter unit 104, and the refractive index of the light adjustment unit 105 is greater than the refractive index of the color filter unit 104; the light adjustment unit 105 at least covers the side wall of the shading unit 103 and includes an adjustment sidewall 106, and the plane on which the adjustment sidewall 106 is located intersects with the plane on which the base substrate 101 is located.

[0023] Among them, the base substrate 101 can be a rigid material such as glass or silicon wafer, or a flexible material such as ultra-thin glass, metal foil or polymer plastic material. The light-emitting unit 102 can be a red light-emitting unit, a green light-emitting unit or a blue light-emitting unit with different light-emitting colors, and the light-emitting unit 102 can also be a white light-emitting unit with the same light-emitting color. The color selection of the specific light-emitting unit 102 can be selected according to actual design requirements, and the embodiment of the present invention does not make specific limitations. The light-emitting unit 102 can be an organic light-emitting diode, which includes a stacked structure of an anode, a common organic light-emitting layer, and a cathode in sequence along the light-emitting direction. At the same time, a pixel driving circuit is also provided between the base substrate 101 and the light-emitting unit 102 to output a driving signal to ensure normal light emission of the light-emitting unit 102. A pixel definition layer 1021 is also included between adjacent light-emitting units 102, and a pixel opening area of ​​the light-emitting unit is formed between adjacent pixel definition layers 1021 for the light-emitting unit 102 to emit light. To ensure the color purity of the light emitted by the light-emitting unit 102, a color filter unit 104 is further provided in the light-emitting direction of the light-emitting unit 102. The color filter unit 104 covers the light-emitting unit 102. The projected area of ​​the color filter unit 104 on the base substrate 101 is larger than the projected area of ​​the light-emitting unit 102 on the base substrate 101. The color filter unit 104 can receive the light emitted by the corresponding light-emitting unit 102 and filter the light of a different color from the color filter unit 104, so that the color purity of the light after passing through the color filter unit 104 is significantly improved, thereby ensuring the display effect of the display panel 100. A shading unit 103 is also provided between adjacent color filter units 104 of different colors. The shading unit 103 is used to prevent optical crosstalk between adjacent light rays of different colors, thereby ensuring the display effect of the display panel 100. The shading unit 103 can be a black matrix or other black material to absorb light incident on the shading unit 103. The display panel 100 also includes a light adjustment unit 105, which can be formed of a transparent material with a high refractive index. The light adjustment unit 105 at least covers the side wall of the shading unit 103 and includes an adjustment side wall 106. The plane where the adjustment side wall 106 is located intersects with the plane where the base substrate 101 is located. The light adjustment unit 105 is in contact with the color filter unit 104. The refractive index of the light adjustment unit 105 is greater than the refractive index of the color filter unit 104. Therefore, after the external ambient light incident on the display panel 100 is incident on the adjustment side wall 106 of the light adjustment unit 105, due to the different refractive indices of the light adjustment unit 105 and the color filter unit 104, the external ambient light will be deflected at the junction of the light adjustment unit 105 and the color filter unit 104, and there is a certain angle between the adjustment side wall 106 of the light adjustment unit 105 and the plane where the base substrate 101 is located, so that the external ambient light is deflected toward the direction away from the pixel opening area of ​​the light-emitting unit 102, that is, deflected into the pixel definition layer 1021 of the adjacent light-emitting unit 102.Furthermore, by reasonably controlling and adjusting the size of the angle between the side wall 106 and the plane where the base substrate 101 is located, the external ambient light is prevented from entering the reflective metal layer, such as the anode layer, located in the light-emitting unit 102 as much as possible, thereby reducing the external ambient light reflected by the reflective metal layer and then emitted. The reflected external ambient light will undergo diffraction at the edge of the shading unit 103, and the diffracted light and the reflected light will undergo more complex light interference, presenting color patterns of various colors with a certain period, resulting in color separation in the color of the light. At the same time, it avoids the mixing of part of the reflected external ambient light with the light normally emitted by the light-emitting unit 102, thereby reducing the impact on the display effect of the display panel 100. Part of the light emitted by the light-emitting unit 102 will be incident on the light adjustment unit 105. Since the refractive index of the light adjustment unit 105 is different from that of the color filter unit 104, and the refractive index of the light adjustment unit 105 is greater than that of the color filter unit 104, the light will also be deflected at the junction of the light adjustment unit 105 and the color filter unit 104, thereby increasing the side-view light output, helping to alleviate the brightness attenuation of the display panel 100 under a wide viewing angle, and ensuring the overall display effect of the display panel 100. For example, a light extraction unit can be further provided on the side of the color filter unit 104 away from the base substrate 101. The material, morphology, and position of the light extraction unit and the light adjustment unit 105 are reasonably matched, so that the light extraction unit can be used as a micro lens pattern (MLP). The micro mirror structure can adjust the light originally propagating along a large angle direction emitted by the light-emitting unit 102 to propagate along a small angle direction, thereby improving the light extraction efficiency of the light-emitting unit 102 and increasing the brightness of the light output in the normal viewing direction of the display panel 100.

[0024] In an embodiment of the present invention, a light adjustment unit is provided, the light adjustment unit is in contact with the color filter unit, and the refractive index of the light adjustment unit is controlled to be greater than the refractive index of the color filter unit, so that the optical paths of the external ambient light incident on the adjustment side wall of the light adjustment unit and the light emitted by the light-emitting unit can both be adjusted, thereby ensuring the overall display effect of the display panel.

[0025] Based on the above embodiment, the positional relationship between the light adjustment unit 105 and the light shielding unit 103 will be described below.

[0026] As an implementable method, continue to refer to Figure 2 and Figure 3 Optionally, the light adjustment unit 105 includes a first adjustment section 1051 , the first adjustment section 1051 covers the side wall of the shading unit 103 , and the adjustment sidewall 106 is the side wall of the first adjustment section 1051 .

[0027] The light adjustment unit 105 includes a first adjustment section 1051. Figure 3As an example, the first adjustment section 1051 of the light adjustment unit 105 is arranged around the shading unit 103. This increases the amount of ambient light received by the light adjustment unit 105 and the amount of light emitted by the light emitting unit 102, ensuring the light adjustment function of the light adjustment unit 105 and thus maintaining the display quality of the display panel. The light adjustment unit 105 can cover the sidewalls of the shading unit 103 and can be formed using an etching process to prevent ambient light from diffracting at the edges of the shading unit 103, causing color separation and affecting the display quality of the display panel 100. By properly setting the coverage thickness and coverage angle of the light adjustment unit 105, the first adjustment section 1051 can receive ambient light for light adjustment, preventing ambient light from entering the light emitting unit 102. The first adjustment section 1051 can also adjust the light emitted by the light emitting unit 102, increasing the side-view light output, ensuring the display brightness of the display panel 100 at a wide viewing angle, and thus ensuring the overall display uniformity of the display panel 100.

[0028] As another possible implementation, Figure 4 A structural diagram of another display panel provided by an embodiment of the present invention is shown in FIG. Figure 4 As shown, optionally, the light adjustment unit 105 also includes a second adjustment section 1052, which is connected to the first adjustment section 1051 and is located on a side of the first adjustment section 1051 away from the base substrate 101, and the adjustment side wall 106 includes a side wall of the first adjustment section 1051 and a side wall of the second adjustment section 1052; the shading unit 103 includes a first surface 1031 on a side away from the base substrate 101, and the second adjustment section 1052 covers at least a portion of the first surface 1031.

[0029] The light adjustment unit 105 further includes a second adjustment section 1052, which is connected to the first adjustment section 1051. The second adjustment section 1052 and the first adjustment section 1051 are made by the same manufacturing process and the same material. The second adjustment section 1052 is located on a side of the first adjustment section 1051 away from the base substrate 101 and at least covers the first surface 1031 of the light shielding unit 103. The second adjustment section 1052 can partially cover the first surface 1031, or the second adjustment section 1052 can completely cover the first surface 1031. Figure 4As shown, the second adjustment section 1052 partially covers the first surface 1031 of the light shielding unit 103. Since the light adjustment unit 105 is made of a transparent material, the second adjustment section 1052 has an opening on the first surface 1031. This can reduce the probability that some light will be emitted through the second adjustment section 1052 at the gap between adjacent color filter units 104 and not through the color filter units 104, thereby ensuring the display effect of the display panel 100. The adjustment sidewall 106 of the light adjustment unit 105 includes the sidewall of the first adjustment section 1051 and the sidewall of the second adjustment section 1052, increasing the area for receiving external ambient light and light emitted by the light-emitting unit 102, improving the adjustment of light from more angles, and ensuring the display effect of the display panel 100.

[0030] As another possible implementation, Figure 5 A structural diagram of another display panel provided by an embodiment of the present invention is shown in FIG. Figure 5 As shown, optionally, the second adjustment section 1052 covers the first surface 1031 .

[0031] The second adjustment portion 1052 covers the first surface 1031 of the light shielding unit 103 . Only the sidewall of the first adjustment portion 1051 needs to be etched, and the second adjustment portion 1052 does not need to be additionally etched to form an opening, thereby simplifying the complexity of the preparation process. The second adjustment section 1052 completely covers the first surface 1031, so that the second adjustment section 1052 is added between the shading unit 103 and the color filter unit 104. Compared with the external ambient light directly entering the shading unit 103 through the gap between the adjacent color filter units 104, it is easy to be reflected in the inorganic insulating layer between the shading unit 103 and the gap between the adjacent color filter units 104, affecting the display effect of the display panel. Since the second adjustment section 1052 covers the first surface 1031 and the light adjustment unit 105 is a transparent material with a high refractive index and a low reflectivity, the external ambient light can easily pass through the second adjustment section 1052 of the light adjustment unit 105, enter the shading unit 103 and be absorbed, effectively reducing the reflectivity of the external ambient light incident on the display panel 100, thereby ensuring the display effect of the display panel 100.

[0032] Continue to refer Figure 4 Optionally, at least one first opening 107 is provided in the second adjustment section 1052 , and the first opening 107 exposes a portion of the first surface 1031 .

[0033] As shown in Figure 4, a first opening 107 is provided in the second adjustment section 1052, and the first opening 107 exposes a portion of the first surface 1031. The number of the first openings 107 can be selected according to actual design requirements and is not specifically limited in the embodiment of the present invention. By providing the first opening 107, a portion of the second adjustment section 1052 located at the adjacent color filter unit 104 is etched away, thereby preventing the light adjustment unit 105 from being made of a material with a high refractive index and low reflectivity, so that some light at a specific angle emitted by the light-emitting unit 102 is easily emitted from the gap between the adjacent color filter units 104 through the second adjustment section 1052 instead of the color filter unit 104, thereby affecting the display effect of the display panel. Reasonable setting of the extension length of the first opening 107 along the first direction (the Y direction in the figure) can effectively reduce the probability of light emitting from the gap between the adjacent color filter units 104, improve the color purity of the light emitted by the display panel 100, and thus ensure the display effect of the display panel 100.

[0034] Continue to refer Figure 4 Optionally, the diameter d of the first opening 107 satisfies d≤2μm.

[0035] The first opening 107 is formed by an etching process. In the prior art, the first surface 1031 of the light shielding unit 103 has a dimension of approximately 2 μm along the first direction. The maximum aperture of the first opening 107 is such that the light adjustment unit 105 does not cover the first surface 1031 of the light shielding unit 103. The aperture of the first opening 107 is appropriately set to reduce the probability of light escaping from the gaps between adjacent color filter units 104. The aperture of the first opening 107 can be selected based on actual design requirements and is not specifically limited in the embodiments of the present invention.

[0036] Continue to refer Figure 4 Optionally, the shading unit 103 is located between a first color filter unit 1041 and a second color filter unit 1042 of different colors; the first color filter unit 1041 contacts a portion of the first surface 1031 through the first opening 107, and the second color filter unit 1042 contacts a portion of the first surface 1031 through the first opening 107.

[0037] Among them, Figure 4As shown, the light shielding unit 103 is located between the first color filter unit 1041 and the second color filter unit 1042 of different colors, thereby preventing optical crosstalk between the light emitted by the first color filter unit 1041 and the second color filter unit 1042 of different colors, which could affect the display quality of the display panel 100. The first color filter unit 1041 contacts a portion of the first surface 1031 through the first opening 107, and the second color filter unit 1042 contacts a portion of the first surface 1031 through the first opening 107. This prevents light emitted by the light-emitting unit 102 from directly exiting the gap between adjacent color filter units 104 via the light adjustment unit 105 with a high refractive index and low reflectivity, thereby ensuring the display quality of the display panel 100. At the same time, the contact area between the first color filter unit 1041 and the light shielding unit 103 and the contact area between the second color filter unit 1042 and the light shielding unit 103 are increased, thereby ensuring the stability of the film structure of the display panel 100 and increasing the service life of the display panel 100.

[0038] Continue to refer Figure 2 Optionally, the angle α between the plane where the side wall 1051 is located and the plane where the base substrate 101 is located is adjusted to meet 10°≤α≤65°.

[0039] Among them, the angle between the plane where the side wall 106 is located and the plane where the base substrate 101 is located is reasonably set, so that the external ambient light is incident on the adjustment side wall through the color filter unit 104, 1051. Due to the different refractive indices of the light adjustment unit 105 and the color filter unit 104, the light is deflected at the junction of the adjustment side wall 106 and the color filter unit 104, in conjunction with the angle between the plane where the side wall 106 is located and the plane where the base substrate 101 is located, so that the external ambient light is deflected to the pixel definition layer 1021 as much as possible, and the external ambient light is prevented from being deflected to the opening area of ​​the light-emitting unit 102, affecting the normal display effect of the display panel 100. At the same time, for the light emitted from the light-emitting unit 102 to the light adjustment unit 105, due to the different refractive indices of the light adjustment unit 105 and the color filter unit 104, by adjusting the junction of the side wall 106 and the color filter unit 104, and coordinating the adjustment of the angle between the plane where the side wall 106 is located and the plane where the base substrate 101 is located, the light is deflected, so that the emitted light is deflected outward as much as possible, increasing the side viewing angle of light, alleviating the brightness attenuation of the display panel 100 at a large viewing angle, and ensuring the overall display effect of the display panel 100.

[0040] Optionally, the refractive index of the light adjustment unit 105 is n1, and the refractive index of the color filter unit 104 is n2, wherein n1≥n2.

[0041] For example, 1.8≤n1≤2.0; 1.4≤n2≤1.6.

[0042] By properly setting the refractive index of the light adjustment unit 105 and the refractive index of the color filter unit 104, the refractive index of the light adjustment unit 105 is greater than or equal to the refractive index of the color filter unit 104. Ambient light incident on the display panel 100 passes through the color filter unit 104 and enters the light adjustment unit 105. It is then deflected at the junction of the adjustment sidewall 106 and the color filter unit 104. The outgoing light is deflected toward the normal direction, with a refraction angle smaller than the incident angle. This ensures that the ambient light is deflected as much as possible into the pixel definition layer 1021 corresponding to the light adjustment unit 105, thereby preventing the ambient light from affecting the display effect of the display panel 100. The light emitted from the light-emitting unit 102 is incident on the color filter unit 104 through the light adjustment unit 105, and is deflected at the junction of the adjustment side wall 106 and the color filter unit 104. The emitted light is deflected away from the normal direction, and the refraction angle is greater than the incident angle, ensuring that the light is deflected toward a large angle, increasing the side viewing angle of light emission, and ensuring the display uniformity of the display panel 100.

[0043] Figure 6 A structural diagram of another display panel provided by an embodiment of the present invention is shown in FIG. Figure 6 As shown, optionally, along a first direction, the first direction is a direction perpendicular to the thickness direction of the display panel 100 (eg Figure 6 ), the distance between two adjacent shading units 103 is a, and the extension length of the light adjustment unit 105 located on one side of the shading unit 103 is b, wherein,

[0044] Among them, along the first direction, the extension length of the light adjustment unit 105 located on one side of the shading unit 103 can be selected according to actual design requirements, and the embodiment of the present invention does not make any specific restrictions. Figure 6 As shown, the exemplary The maximum extension length of the light adjustment unit 105 located on one side of the shading unit 103 is half the distance between two adjacent shading units 103, effectively increasing the area receiving the external ambient light incident on the display panel 100 and the area of ​​the light emitted by the light-emitting unit 102, thereby achieving greater optical path adjustment of the light and ensuring the display effect of the display panel 100.

[0045] Continue to refer Figure 2 、 Figure 4 、 Figure 5 and Figure 6 Optionally, the light emitting unit 102 further includes a reflective electrode 108 , and along the thickness direction of the display panel 100 , the light adjustment unit 105 at least covers the edge of the reflective electrode 108 .

[0046] The light-emitting unit 102 further includes a reflective electrode 108. The reflective layer 108 is a film layer in the anode layer of the light-emitting unit 102. The reflective electrode 108 is used to reflect ambient light incident on the light-emitting unit 102 to avoid affecting the normal light emission of the light-emitting unit 102. The reflective electrode 108 can be a metal with high reflectivity, such as silver (Ag). The light adjustment unit 105 at least covers the edge of the reflective electrode 108. Since the external ambient light incident on the display panel 100 is deflected at the junction of the color filter unit 104 and the light adjustment unit 105, the light is deflected to the pixel definition layer 1021. The component material of the pixel definition layer 1021 is a transparent inorganic insulating material. The light will pass through the pixel definition layer 1021. There are metal traces such as the pixel driving circuit within the projection range of the pixel definition layer 1021 toward the base substrate 101. The metal traces will reflect the external ambient light incident on the projection range of the pixel definition layer 1021. However, the reflection effect is weaker than that of the reflective electrode 108, and it is easy to generate more different reflected light, which will affect the display effect of the display panel 100 after being emitted from the display panel 100. Therefore, the light adjustment unit 105 covers at least the edge of the reflective electrode 108. As a result, the ambient light incident on the display panel 100 is adjusted by the light adjustment unit 105 and then partially incident on the reflective electrode 108. After being reflected by the reflective electrode 108, part of the ambient light is reflected into the adjacent light shielding unit 103 and absorbed by the light shielding unit 103. This reduces the risk of ambient light being emitted and ensures the display effect of the display panel 100.

[0047] Figure 7 A structural diagram of another display panel provided by an embodiment of the present invention is shown in FIG. Figure 7 As shown, optionally, the display panel 100 further includes an isolation layer 109 located between the film layer where the shading unit 103 is located and the film layer where the light-emitting unit 102 is located, and the isolation layer 109 is in contact with the light adjustment unit 105; the refractive index of the isolation layer 109 is less than the refractive index of the light adjustment unit 105.

[0048] Among them, the isolation layer 109 located between the film layer where the light-shielding unit 103 is located and the film layer where the light-emitting unit 102 is located can be made of an inorganic insulating material. The isolation layer 109 isolates and protects the light-emitting unit 102 to ensure the normal operation of the light-emitting unit 102. The isolation layer 109 is in contact with the light-adjusting unit 105. The refractive index of the isolation layer 109 is less than the refractive index of the light-adjusting unit 105. The refractive index of the isolation layer 109 is about 1.5. Therefore, the external ambient light emitted by the light-adjusting unit 105 is deflected away from the normal direction at the junction of the light-adjusting unit 105 and the isolation layer 109, so that the external ambient light is deflected to the pixel definition layer 1021, thereby preventing a large amount of external ambient light from being reflected by the reflective electrode 108 and then emitted, affecting the display effect of the display panel 100. For the light emitted by the light-emitting unit 102, the refractive index of the isolation layer 109 is smaller than the refractive index of the light adjustment unit 105, so that the light emitted through the isolation layer 109 is deflected toward the normal direction at the junction of the light adjustment unit 105 and the isolation layer 109, making it easier for the light to be emitted at a side angle, thereby meeting the display brightness requirements under a large viewing angle.

[0049] Continue to refer Figure 7 Optionally, the display panel 100 further includes an encapsulation function layer 110 located between the film layer where the light-shielding unit 103 is located and the film layer where the light-emitting unit 102 is located, and the encapsulation function layer 110 includes an isolation layer 109 .

[0050] The display panel 100 further includes an encapsulation functional layer 110 located between the film layer containing the light-shielding unit 103 and the film layer containing the light-emitting unit 102. A layer of the encapsulation functional layer 110 serves as an isolation layer 109 in contact with the light-adjusting unit 105. The refractive index of the isolation layer 109 differs from that of the other film layers in the encapsulation functional layer 110, ensuring that ambient light is significantly deflected at the interface between the light-adjusting unit 105 and the isolation layer 109, thereby ensuring the adjustment effect on the ambient light and the display quality of the display panel 100. At the same time, the angle of light emitted by the light-emitting unit 102 is adjusted to prevent brightness attenuation of the display panel 100 at wide viewing angles, thereby ensuring the overall display quality of the display panel 100.

[0051] Figure 8 A structural diagram of another display panel provided by an embodiment of the present invention is shown in FIG. Figure 8 As shown, optionally, the display panel 100 further includes a touch function layer 111 located between the film layer where the light shielding unit 103 is located and the film layer where the light emitting unit 102 is located, and the touch function layer 111 includes an isolation layer 109 .

[0052] Among them, the display panel 100 also includes a touch function layer 111 located between the film layer where the shading unit 103 is located and the film layer where the light-emitting unit 102 is located. The touch hole function layer includes a touch electrode 112, an inorganic insulating layer 113 and an isolation layer 109. The film layer in the touch function layer 111 is reused as the isolation layer 109. On the premise of ensuring the normal touch function, the refractive index of the isolation layer 109 in the touch function layer 111 is controlled to be less than the refractive index of the light adjustment unit 105, so as to ensure the adjustment of the optical path of the light and the display effect of the display panel 100.

[0053] Optionally, the material of the light adjustment unit 105 includes at least one of an inorganic material, a resin material, and a polymer material of mixed metal oxides.

[0054] Inorganic materials may include silicon nitride, silicon oxide, and other inorganic materials, and mixed metal oxide polymer materials may include polymer materials containing metal oxide nanoparticles such as titanium dioxide and zirconium dioxide. Light adjustment unit 105 is made of a transparent material with a high refractive index to ensure that light entering light adjustment unit 105 can be properly emitted without affecting the light propagation effect.

[0055] Based on the above invention concept, Figure 9 A schematic structural diagram of a display device provided by an embodiment of the present invention is shown in FIG. Figure 9 As shown, the display device 200 includes the display panel 100 described in the above embodiment.

[0056] It should be noted that since the display device provided in this embodiment has the same or corresponding beneficial effects as the display panel of the above embodiment, no further description is given here. The display device 200 provided in this embodiment of the present invention can be Figure 9 The mobile phone shown can also be any electronic product with a display function, including but not limited to the following categories: televisions, laptops, desktop monitors, tablet computers, digital cameras, smart bracelets, smart glasses, car displays, medical equipment, industrial control equipment, touch interactive terminals, etc. The embodiments of the present invention do not specifically limit this.

[0057] Note that the above are only preferred embodiments of the present invention and the technical principles employed. Those skilled in the art will appreciate that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments, combinations, and substitutions are possible for those skilled in the art without departing from the scope of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments and may include many other equivalent embodiments without departing from the scope of the present invention. The scope of the present invention is determined by the scope of the appended claims.

Claims

1. A display panel, characterized in that: The display panel comprises a base substrate and a plurality of light-emitting units, a plurality of light-shielding units, and a plurality of color filter units sequentially located on one side of the base substrate; the light-shielding unit is located between two adjacent color filter units, and along the thickness direction of the display panel, the color filter unit covers the light-emitting unit; and the color filter unit and the light-shielding unit at least partially overlap; The display panel further includes a light adjustment unit, the light adjustment unit is in contact with the color filter unit, and the refractive index of the light adjustment unit is greater than the refractive index of the color filter unit; the light adjustment unit at least covers the side wall of the light shielding unit and includes an adjustment side wall, and the plane where the adjustment side wall is located intersects with the plane where the base substrate is located; The light adjustment unit further includes a first adjustment sub-section and a second adjustment sub-section, wherein the second adjustment sub-section is connected to the first adjustment sub-section and is located on a side of the first adjustment sub-section away from the substrate, and the adjustment sidewall includes a sidewall of the first adjustment sub-section and a sidewall of the second adjustment sub-section; The light shielding unit includes a first surface away from the substrate, and the second adjustment portion covers at least a portion of the first surface.

2. The display panel according to claim 1, wherein: The first adjustment section covers the side wall of the light shielding unit, and the adjustment side wall is the side wall of the first adjustment section.

3. The display panel according to claim 1, wherein: The second adjusting section covers the first surface.

4. The display panel according to claim 1, wherein: At least one first opening is provided in the second adjustment section, and the first opening exposes a portion of the first surface.

5. The display panel according to claim 4, wherein: The light shielding unit is located between the first color filter unit and the second color filter unit of different colors; The first color filter unit contacts a portion of the first surface through the first opening, and the second color filter unit contacts a portion of the first surface through the first opening.

6. The display panel according to claim 4, wherein: The diameter d of the first opening satisfies d≤2 μm.

7. The display panel according to claim 1, wherein: An included angle α between a plane where the adjustment sidewall is located and a plane where the base substrate is located satisfies 10°≤α≤65°.

8. The display panel according to claim 1, wherein: The refractive index of the light adjustment unit is n1, and the refractive index of the color filter unit is n2, wherein n1>n2.

9. The display panel according to claim 1, wherein: Along a first direction, which is a direction perpendicular to the thickness direction of the display panel, the distance between two adjacent shading units is a, and the extension length of the light adjustment unit located on one side of the shading unit is b, wherein, 10. The display panel according to claim 1, wherein The light emitting unit further includes a reflective electrode, and along the thickness direction of the display panel, the light adjustment unit at least covers an edge of the reflective electrode.

11. The display panel according to claim 1, wherein The display panel further includes an isolation layer located between the film layer where the light shielding unit is located and the film layer where the light emitting unit is located, and the isolation layer is in contact with the light adjustment unit; The refractive index of the isolation layer is smaller than the refractive index of the light adjustment unit.

12. The display panel according to claim 11, wherein: The display panel further includes an encapsulation function layer located between the film layer where the light-shielding unit is located and the film layer where the light-emitting unit is located, and the encapsulation function layer includes the isolation layer.

13. The display panel according to claim 11, wherein: The display panel further includes a touch function layer located between the film layer where the light shielding unit is located and the film layer where the light emitting unit is located, and the touch function layer includes the isolation layer.

14. The display panel according to claim 1, wherein The material of the light adjustment unit includes at least one of an inorganic material, a resin material, and a polymer material of mixed metal oxides.

15. A display device, characterized in that: include: The display panel according to any one of claims 1 to 14.

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