Display panel and display device

Abstract

The invention provides a display panel and a display device, the display panel comprises a visible area, a light guide plate and a reflection part, the light guide plate comprises a first side face and a second side face adjacent to a light emitting face, the first side face is located on the side, close to a light source, of the light guide plate, and at least part of the reflection part is located on the side, close to the edge of the light guide plate, of the visible area. The reflection part and the second side face are at least partially overlapped in the direction parallel to the plane where the display panel is located. According to the design, light emitted from the second side face can be effectively reduced through the reflection part, and the edge light leakage phenomenon of the display panel is weakened; in addition, the light reflected by the reflecting part can be emitted out of the light guide plate through the light emitting surface, and the light emitted out of the second side surface is adjusted to be emitted out through the light emitting surface, so that the design is beneficial to improving the light utilization efficiency of the light guide plate.

Description

Technical Field

[0001] This application relates to the field of display technology, specifically to a display panel and display device. Background Technology

[0002] With the continuous development of display technology, light guide plate structures are increasingly being used in display backlighting. Besides the light-emitting surface that emits light uniformly, the edges of the light guide plate structure also tend to emit light, which can easily cause light leakage at the edges. To solve this problem, existing technologies often employ the method of attaching reflective tape to the edges of the light guide plate structure to reduce light leakage. However, reflective tape has limited light-reflecting ability and is difficult to effectively reduce edge light leakage, thus hindering the improvement of light utilization efficiency. Summary of the Invention

[0003] This application provides a display panel and display device to solve the problem of poor reduction of light leakage at the edge of the light guide plate.

[0004] In view of this, this application provides a display panel including a viewable area.

[0005] It also includes a light guide plate and a reflector. The light guide plate includes a first side and a second side adjacent to the light-emitting surface. The first side is located on the side of the light guide plate closer to the light source. At least a portion of the reflector is located on the side of the visible area closer to the edge of the light guide plate.

[0006] Along a direction parallel to the plane of the display panel, the reflective portion at least partially overlaps with the second side surface.

[0007] Based on the same inventive concept, this application also provides a display device, including the above-mentioned display panel.

[0008] Compared with the prior art, the display module and display device provided by the present invention achieve at least the following beneficial effects: After the light generated by the light source enters the light guide plate through the first side, some of the light can propagate towards the second side. When there is an overlap between the reflective part and the second side, the overlapping portion of the reflective part can intercept and reflect this portion of light, preventing it from continuing to reach the second side and reducing the amount of light emanating from the light guide plate through the second side. Therefore, the design of this application can effectively reduce the light emanating from the second side by utilizing the reflective part, thus mitigating the edge light leakage phenomenon of the display panel. In addition, the light reflected by the reflective part can exit the light guide plate through the light-emitting surface, thus adjusting the light that should have been emitted through the second side to be emitted through the light-emitting surface. This design helps to improve the light utilization efficiency of the light guide plate. Attached Figure Description

[0009] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0010] Figure 1 A schematic diagram of a partial structure of a display panel provided in this application; Figure 2 for Figure 1 The diagram shows a partial cross-sectional view of the display panel along AA'. Figure 3 for Figure 1 A schematic diagram of the light guide plate and light source in the display panel shown; Figure 4 for Figure 3 The diagram shows a partial structure of the light guide plate and a cross-sectional view of the light source along section line BB'. Figure 5 This is a schematic diagram of a partial structure of a light guide plate provided in this application; Figure 6 for Figure 5 A cross-sectional schematic diagram of part of the light guide plate structure along section line CC'. Figure 7 A top view schematic diagram of a partial structure of a light guide plate provided in this application; Figure 8 for Figure 7 A cross-sectional schematic diagram of part of the light guide plate structure along section line DD'. Figure 9 A top view schematic diagram of a partial structure of a light guide plate provided in this application; Figure 10 A schematic diagram of a partial structure of a light guide plate provided in this application; Figure 11 for Figure 10 A top view of part of the structure of the light guide plate shown; Figure 12 Another schematic diagram of a partial structure of a light guide plate provided in this application; Figure 13 for Figure 12 A top view of part of the structure of the light guide plate shown; Figure 14 A schematic diagram of a partial structure of a light guide plate provided in this application; Figure 15 for Figure 14 A top view of part of the structure of the light guide plate shown; Figure 16A schematic diagram of a partial structure of a light guide plate provided in this application; Figure 17 for Figure 16 A top view of part of the structure of the light guide plate shown; Figure 18 for Figure 16 A cross-sectional schematic diagram of part of the light guide plate structure along section line EE'. Figure 19 A top view schematic diagram of a partial structure of a light guide plate provided in this application; Figure 20 A top view schematic diagram of a partial structure of a light guide plate provided in this application; Figure 21 for Figure 20 A cross-sectional schematic diagram of part of the light guide plate structure along section line FF'. Figure 22 A top view schematic diagram of a partial structure of a light guide plate provided in this application; Figure 23 Another top view schematic diagram of a partial structure of a light guide plate provided in this application; Figure 24 A top view schematic diagram of a partial structure of a light guide plate provided in this application; Figure 25 A schematic diagram of a partial structure of a light guide plate provided in this application; Figure 26 This is a schematic diagram of a display device provided in this application. Detailed Implementation

[0011] To better understand the technical solution of this application, the embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0012] It should be understood that the described embodiments are merely some, not all, of the embodiments in this application. All other embodiments obtained by those skilled in the art based on the embodiments in this application without inventive effort are within the scope of protection of this application.

[0013] The terminology used in the embodiments of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. The singular forms “a,” “the,” and “the” used in the embodiments of this application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise.

[0014] It should be understood that the term "and / or" used in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0015] Figure 1 This is a schematic diagram of a partial structure of a display panel provided in this application. Figure 2 for Figure 1 The diagram shows a partial cross-sectional view of the display panel along AA'.

[0016] In response to the above problems, combined with Figure 1 and Figure 2 This application provides a display panel 10, which may include a cover plate 01 and a liquid crystal layer 02. The liquid crystal layer 02 may be located on one side of the cover plate 01, and the liquid crystal layer 02 contains liquid crystal molecules 021 that can be deflected under the coverage of an electric field.

[0017] like Figure 1 As shown, the display panel 10 includes a viewable area VA, and may also include a display area AA. The orthographic projection of the display area AA onto the cover plate 01 can completely fall within the orthographic projection range of the viewable area VA onto the cover plate 01. When the display panel 10 is displaying, the portion of the display panel 10 corresponding to the display area AA can display an image. The edge of the orthographic projection of the viewable area VA onto the cover plate 01 can at least partially surround the edge of the orthographic projection of the display area AA onto the cover plate 01. Considering that no light-shielding structure (e.g., ink) may be provided within the viewable area VA, this design helps to prevent the light-shielding structure located in the edge region of the display panel 10 from obstructing the display area AA.

[0018] Figure 3 for Figure 1 The diagram shown is a structural illustration of the light guide plate and light source in the display panel. (For ease of understanding) Figure 3 The internal structure of the light source was not shown in detail. Figure 3 This is only to illustrate part of the structure of the light guide plate and the positional relationship between the light guide plate and the light source.

[0019] Combination Figure 2 and Figure 3 The display panel 10 also includes a light guide plate 03 and a reflective portion 04. The light guide plate 03 includes a first side surface 03b and a second side surface 03c adjacent to the light emitting surface 03a.

[0020] When the display panel 10 is on, the light-emitting surface 03a of the light guide plate 03 can be regarded as a surface light source, that is, the light emitted from each area on the light-emitting surface 03a is similar or the same.

[0021] The first side 03b is located on the side of the light guide plate 03 closest to the light source 05. The light emitted by the light source 05 can enter the interior of the light guide plate 03 through the first side 03b. After being reflected, the light entering the interior of the light guide plate 03 can exit the light guide plate 03 through the light-emitting surface 03a.

[0022] At least a portion of the reflective part 04 is located on the side of the visible area VA near the edge of the light guide plate 03. It should be noted that after the light generated by the light source 05 enters the interior of the light guide plate 03 through the first side 03b, it undergoes multiple reflections. This portion of the light can propagate towards the edge of the light guide plate 03. The purpose of the reflective part 04 is to prevent this portion of the light from propagating further towards the edge of the light guide plate 03, thereby reducing the amount of light emitted from the edge of the light guide plate 03.

[0023] Figure 4 for Figure 3 The diagram shows a partial structure of the light guide plate and a cross-sectional view of the light source along section line BB'.

[0024] Combination Figure 3 and Figure 4 Along a direction parallel to the plane of the display panel 10, the reflective portion 04 at least partially overlaps with the second side surface 03c. After the light generated by the light source 05 enters the light guide plate 03 via the first side surface 03b, this portion of the light can propagate towards the second side surface 03c. When there is an overlap between the reflective portion 04 and the second side surface 03c, the portion of the reflective portion 04 that overlaps with the second side surface 03c can intercept and reflect this portion of light, preventing it from continuing to reach the second side surface 03c and reducing the amount of light emitted from the light guide plate 03 via the second side surface 03c. Therefore, the design of this embodiment can effectively reduce the light emitted from the second side surface 03c by utilizing the reflective portion 04, thus mitigating the edge light leakage phenomenon of the display panel 10. Furthermore, the light reflected by the reflective portion 04 can exit the light guide plate 03 via the light-emitting surface 03a, thus adjusting the light that should have been emitted from the second side surface 03c to be emitted via the light-emitting surface 03a. This design helps improve the light utilization efficiency of the light guide plate 03.

[0025] In one embodiment of this application, combined with Figure 3 and Figure 4 The light guide plate 03 includes multiple grooves 031, which are located on the side of the visible area VA near the edge of the light guide plate 03.

[0026] The reflective part 04 includes a first part 041, at least a portion of which is located in the groove 031. Since the first part 041 can fill the groove 031, the shape of the first part 041 can be set by setting the shape structure of the groove 031, so as to improve the light blocking effect of the reflective part 04 while adapting to the light guide plate 03.

[0027] Along the direction X perpendicular to the second side surface 03c, at least a portion of the first part 041 overlaps with the second side surface 03c.

[0028] In this embodiment of the application, the portion of the first part 041 that overlaps with the second side 03c can block the propagation of light in the light guide plate 03 to the second side 03c, and helps to reflect the light to the light-emitting surface 03a. That is, the first part 041 helps to reduce the edge light leakage phenomenon and enhance the light utilization rate of the light guide plate 03.

[0029] Figure 5 This is a schematic diagram of a portion of the light guide plate structure provided in this application. Figure 6 for Figure 5 The diagram shows a partial cross-sectional view of the light guide plate along section line CC'.

[0030] In one embodiment of this application, combined with Figure 5 and Figure 6 The plurality of grooves 031 include a first type of groove 311 and a second type of groove 312. The first type of groove 311 is located on the light-emitting surface 03a side of the light guide plate 03, and the second type of groove 312 is located on the opposite surface 03d side of the light guide plate 03, with the opposite surface 03d opposite to the light-emitting surface 03a. In this case, it can be regarded as having grooves 031 for filling the first part 041 respectively on the light-emitting surface 03a and the opposite surface 03d.

[0031] If the first type of groove 311 and the second type of groove 312 do not overlap in the direction perpendicular to the plane where the display panel 10 is located, then the first type of groove 311 and the second type of groove 312 can be regarded as being staggered in the vertical direction.

[0032] In this embodiment, both the first portion 041 in the first type of groove 311 and the first portion 041 in the second type of groove 312 can hinder the propagation of light to the second side surface 03c. Considering that light easily propagates to the second side surface 03c after entering the light guide plate 03 via the first side surface 03b, and is reflected on both the light-emitting surface 03a and the opposite surface 03d, the arrangement of the first type of groove 311 and the second type of groove 312 helps to provide the first portion 041 on both the light-emitting surface 03a and the opposite surface 03d, thereby increasing the interference effect of the first portion 041 on the reflection and propagation process of light on the light-emitting surface 03a and the opposite surface 03d. On the other hand, the first type of groove 311 and the second type of groove 312 can be regarded as being staggered in the vertical direction, which helps to realize that the first part 041 in the first type of groove 311 and the first part 041 in the second type of groove 312 can form a staggered blocking structure. Under this design, when light propagates in a direction parallel to the plane of the display panel 10, the probability of this part of the light being blocked after irradiating the first part 041 increases, further reducing the amount of light emitted from the second side 03c and improving the weakening effect on edge light leakage.

[0033] Figure 7 This is a top view schematic diagram of a partial structure of a light guide plate provided in this application. Figure 8 for Figure 7 The diagram shows a partial cross-sectional view of the light guide plate along section line DD'.

[0034] In one embodiment of this application, combined with Figure 7 and Figure 8 Along the direction X perpendicular to the second side 03c, the orthographic projection of the first type of groove 311 on the cover plate 01 overlaps with the orthographic projection of the second type of groove 312 on the cover plate 01.

[0035] In this embodiment, during the propagation of light toward the second side surface 03c, at least a portion of the light can propagate along a direction X perpendicular to the second side surface 03c. Considering the overlap of the first type of groove 311 and the second type of groove 312, the aforementioned portion of light is easily blocked successively by the first part 041 in the second type of groove 312 and the first part 041 in the first type of groove 311. This design helps to further enhance the blocking effect of the reflective part 04 on the aforementioned portion of light, increase the amount of light emitted from the light-emitting surface 03a due to reflection by the first part 041, and improve light utilization while reducing edge light leakage.

[0036] Figure 9 This is a top view schematic diagram of a partial structure of a light guide plate provided in this application.

[0037] In one embodiment of this application, such as Figure 9As shown, along the direction X perpendicular to the second side 03c, the orthographic projections of the first type of groove 311 on the cover plate 01 and the orthographic projections of the second type of groove 312 on the cover plate 01 are arranged alternately.

[0038] In the embodiments of this application, please refer to the appendix. Figure 9 There may be gaps between adjacent second-type grooves 312. During the propagation of light towards the second side 03c, some light propagating to the first part 041 in the second-type groove 312 is blocked, while some light propagating to the gap between adjacent second-type grooves 312 can continue to propagate towards the second side 03c. At this time, since the first-type grooves 311 and second-type grooves 312 are arranged alternately, the gap between adjacent second-type grooves 312 can overlap with the first-type groove 311. Therefore, some light passing through the gap can be blocked by the first part 041 in the first-type groove 311. Thus, the design of this embodiment can increase the settable area of ​​the first part 041, maximize the light-blocking area of ​​the first part 041, reduce the amount of light illuminating the second side 03c, and further reduce the edge light leakage phenomenon.

[0039] In one embodiment of this application, combined with Figure 6 and Figure 8 The depth of the first type of groove 311 is h1, the depth of the second type of groove 312 is h2, and the thickness of the light guide plate 03 is H, where H < h1 + h2.

[0040] In this embodiment, H < h1 + h2 means that the sum of the heights of the first portion 041 filled in the first type of groove 311 and the first portion 041 filled in the second type of groove 312 can be greater than the thickness of the light guide plate 03. For example... Figure 8 As shown, along the direction X perpendicular to the second side 03c, when the orthographic projection of the first type of groove 311 overlaps with the orthographic projection of the second type of groove 312, there can also be an overlap between the first part 041 in the first type of groove 311 and the first part 041 in the second type of groove 312. This design allows the first part 041 in both types of grooves 031 to achieve a "complete blocking" effect on light in the thickness direction of the light guide plate 03, further reducing the amount of light illuminating the second side 03c and reducing edge light leakage.

[0041] Figure 10 This is a schematic diagram of a partial structure of a light guide plate provided in this application. Figure 11 for Figure 10 A top view of part of the structure of the light guide plate shown. Figure 12 Another schematic diagram of a partial structure of a light guide plate provided in this application. Figure 13 for Figure 12 A top view of part of the structure of the light guide plate shown.

[0042] In one embodiment of this application, combined with Figure 10 and Figure 11 , Figure 12 and Figure 13 Multiple first-type grooves 311 are arranged along the first path S1 and adjacent first-type grooves 311 are interconnected. Multiple second-type grooves 312 are arranged along the second path S2 and adjacent second-type grooves 312 are interconnected. The extension direction of the first path S1 and the extension direction of the second path S2 are parallel to the second side surface 03c and the light-emitting surface 03a, respectively.

[0043] In one possible implementation, such as Figure 10 , Figure 11 , Figure 12 and Figure 13 As shown, the orthographic projections corresponding to the first type of groove 311 and the second type of groove 312 can be arc-shaped. Therefore, the orthographic projections of the entire groove composed of multiple first type of grooves 311 and the entire groove composed of multiple second type of grooves 312 on the cover plate 01 can both be wavy.

[0044] In this embodiment, adjacent first-type grooves 311 are interconnected, meaning that multiple first-type grooves 311 together form a single groove. This single groove can extend continuously along the first path S1. Compared to the case where gaps are set between adjacent grooves 031, this design achieves "seamless blocking" of light by the first portion 041 of the first-type groove 311 along the first path S1, further reducing the amount of light irradiated onto the second side 03c. Furthermore, another single groove formed by the interconnection of adjacent second-type grooves 312 can also achieve the same light-blocking effect as the single groove formed by the first-type grooves 311. Under the combined effect of the single grooves formed by the two types of grooves 031, the amount of light irradiated onto the second side 03c can be further reduced, effectively mitigating edge light leakage and improving light utilization efficiency.

[0045] Figure 14 This is a schematic diagram of a partial structure of a light guide plate provided in this application. Figure 15 for Figure 14 A top view of part of the structure of the light guide plate shown.

[0046] In one possible implementation, combining Figure 14 and Figure 15Multiple first-type grooves 311 are arranged along a first path S1, and adjacent first-type grooves 311 are interconnected. Multiple second-type grooves 312 are arranged along a second path S2, and adjacent second-type grooves 312 are interconnected. Specifically, along a direction perpendicular to the plane of the display panel 10, the first path S1 and the second path S2 coincide, and the entire groove formed by the first-type grooves 311 overlaps with the entire groove formed by the second-type grooves 312.

[0047] Figure 16 This is a schematic diagram of a partial structure of a light guide plate provided in this application. Figure 17 for Figure 16 A top view of part of the structure of the light guide plate shown. Figure 18 for Figure 16 The diagram shows a partial cross-sectional view of the light guide plate along section line EE'.

[0048] In one embodiment of this application, combined with Figure 16 , Figure 17 and Figure 18 Among the multiple grooves 031, there is a third type of groove 313. The third type of groove 313 penetrates the light guide plate 03. The first part 041 filled in the third type of groove 313 can penetrate the light guide plate 03. This design helps to improve the light blocking effect of the reflective part 04 in the thickness direction of the light guide plate 03.

[0049] The third type of groove 313 includes a first groove 3131 and a second groove 3132, which are arranged alternately along the direction X perpendicular to the second side surface 03c.

[0050] In this embodiment, a gap may exist between adjacent first grooves 3131. During the propagation of light toward the second side 03c, some light propagating to the first portion 041 in the first groove 3131 is blocked, while some light propagating to the gap between adjacent first grooves 3131 can continue to propagate toward the second side 03c. At this time, since the first grooves 3131 and the second grooves 3132 are arranged alternately, the gap between adjacent first grooves 3131 can overlap with the second groove 3132. Thus, some light passing through the gap can be blocked by the first portion 041 in the second groove 3132. Therefore, the design of this embodiment, by increasing the settable area of ​​the first portion 041 and combining it with the through-type design of the third type of groove 313, helps to maximize the light-blocking area of ​​the first portion 041, reduce the amount of light illuminating the second side 03c, and further reduce the edge light leakage phenomenon.

[0051] Figure 19 This is a top view schematic diagram of a partial structure of a light guide plate provided in this application.

[0052] In one possible implementation, such as Figure 19 As shown, from a top-down view, the projected shape corresponding to the third type of groove 313 can be arc-shaped, and along the direction X perpendicular to the second side surface 03c, the first groove 3131 and the second groove 3132 are arranged alternately.

[0053] Figure 20 This is a top view schematic diagram of a partial structure of a light guide plate provided in this application. Figure 21 for Figure 20 The diagram shows a partial cross-sectional view of the light guide plate along section line FF'.

[0054] In one embodiment of this application, combined with Figure 20 and Figure 21 The reflective portion 04 includes a second portion 042 and a third portion 043. The second portion 042 covers at least a portion of the second side surface 03c, wherein the second portion 042 may be located on the side of the second side surface 03c away from the visible area VA and may be in contact with the second side surface 03c. When light is emitted from the second side surface 03c, the second portion 042 can reflect that portion of the light, hindering its further propagation after it exits the light guide plate 03 from the second side surface 03c, thus suppressing edge light leakage.

[0055] Along a direction parallel to the plane of the display panel 10, the third portion 043 overlaps with the light-emitting surface 03a, and the third portion 043 is located on the side of the visible area VA near the edge of the light guide plate 03. The third portion 043 can be located on the side of the light-emitting surface 03a away from the opposite surface 03d, and the third portion 043 can be in contact with the light-emitting surface 03a. Since the third portion 043 can be located near the edge of the light guide plate 03, the light irradiated from inside the light guide plate 03 onto the third portion 043 can be light emitted from the light-emitting surface 03a at a large angle. This light can be reflected by the third portion 043, and its further propagation after exiting the light guide plate 03 is hindered by the third portion 043. Therefore, the arrangement of the third portion 043 can also reduce the large-angle light emission of the light guide plate 03, narrow the light emission range of the light-emitting surface 03a, and further improve light utilization efficiency.

[0056] In one possible implementation, such as Figure 21 As shown, the third part 043 can contact both the light-emitting surface 03a and the opposing surface 03d, and the third part 043 and the second part 042 can be an integrated structure. In this case, the third part 043 and the second part 042 can form a "slot-like" structure, which can then fit into the surface of the light guide plate 03. This design helps to enhance the adhesion strength between the reflective part 04 and the light guide plate 03, and also simplifies the manufacturing process.

[0057] In one embodiment of this application, such as Figure 21As shown, the display panel 10 also includes a protective structure 06, which is located on the side of the reflective part 04 away from the light guide plate 03.

[0058] The protective structure 06 at least partially covers the reflective part 04. In this case, the protective structure 06 can protect the reflective part 04.

[0059] In this embodiment of the application, by providing a protective structure 06 to protect the reflective part 04, it helps to improve the structural integrity of the light guide plate 03 when subjected to impact or friction.

[0060] In one embodiment of this application, the protective structure 06 includes tungsten carbide. It should be noted that tungsten carbide has high hardness, and adding tungsten carbide as a component to the protective structure 06 helps improve its wear resistance and enhances its protective effect on the reflective part 04.

[0061] In one embodiment of this application, such as Figure 21 As shown, the thickness w of the protective structure 06 satisfies: 5um ≤ w ≤ 20um.

[0062] In this embodiment, the thickness of the protective structure 06 must ensure optimal protective performance. Since the protective effect of the protective structure 06 is positively correlated with its thickness, the thickness of the protective structure 06 should not be too small. Therefore, a minimum thickness of the protective structure 06 can be defined, which satisfies w ≥ 5 μm. Furthermore, considering the limited space available for the display panel 10, the thickness w of the protective structure 06 needs to be limited to a certain size. Experimental verification shows that w ≤ 20 μm is a suitable thickness range for the protective structure 06.

[0063] Figure 22 This is a top view schematic diagram of a partial structure of a light guide plate provided in this application. Figure 23 Another top view schematic diagram of a partial structure of a light guide plate provided in this application.

[0064] In one embodiment of this application, combined with Figure 22 and Figure 23 The second side surface 03c is curved, and the orthographic projection of the edge of the second side surface 03c onto the cover plate 01 is wavy.

[0065] The light guide plate 03 includes multiple grooves 031, among which a third groove 310 is located between the second side 03c and the visible area VA.

[0066] The reflective part 04 includes a fourth part 044 and a fifth part 045. At least a portion of the fourth part 044 is located within the third groove 310, and the fifth part 045 is located on the side of the second side 03c away from the visible area VA.

[0067] Along the direction away from the visible area VA, the fourth part 044 and the fifth part 045 respectively overlap at least partially with the second side 03c.

[0068] In this embodiment, the combination of the fourth portion 044 and the fifth portion 045, along a direction parallel to the plane of the light guide plate 03 and away from the visible area VA, can completely cover the second side surface 03c, which helps to reduce the amount of light emitted from the second side surface 03c. Furthermore, the wavy design of the edge of the second side surface 03c allows light irradiated from inside the light guide plate 03 onto the second side surface 03c to illuminate the fourth portion 044 and the fifth portion 045 at a larger incident angle, thus improving the light reflection effect of the reflective portion 04.

[0069] Figure 24 This is a top view schematic diagram of a partial structure of a light guide plate provided in this application.

[0070] In one embodiment of this application, such as Figure 24 As shown, the light guide plate 03 also includes a notch 032, which is provided on the second side 03c and recessed in the direction of the visible area VA. At least a portion of the reflective part 04 is filled in the notch 032.

[0071] In this embodiment, considering that the notch 032 can be provided on the second side surface 03c, the manufacturing difficulty corresponding to providing the notch 032 can be reduced. Furthermore, during the manufacturing of the reflective portion 04, the constituent material of the reflective portion 04 can be coated onto the second side surface 03c and the notch 032. Therefore, compared to providing a groove 031 on the light-emitting surface 03a to fill the reflective portion 04, the difficulty of filling the reflective portion 04 in the notch 032 on the second side surface 03c can be reduced.

[0072] In one embodiment of this application, such as Figure 24 As shown, the width of the notch 032 gradually decreases along the direction close to the visible area VA.

[0073] In this embodiment, the notch 032 is designed with a decreasing width along the direction close to the visible area VA, such that the orthographic projection of the notch 032 on the cover plate 01 has an inclined edge 32a, and the extending direction of the inclined edge 32a can intersect with the second side surface 03c. Under this design, light propagating from inside the light guide plate 03 to the second side surface 03c can illuminate the reflective portion 04 corresponding to the inclined edge 32a at a larger incident angle.

[0074] In one embodiment of this application, combined with Figure 3 and Figure 4 The distance ΔL between the reflective part 04 and the visible area VA satisfies: ΔL≥0.2mm.

[0075] In this embodiment of the application, considering that the reflective part 04 can block the light irradiated onto it, in order to avoid the reflective part 04 blocking the light emitted from the visible area VA, it is necessary to have a certain distance between the reflective part 04 and the visible area VA. Therefore, ΔL≥0.2mm is a more suitable distance range.

[0076] Figure 25 This is a schematic diagram of a partial structure of a light guide plate provided in this application.

[0077] In one embodiment of this application, such as Figure 25 As shown, the reflective part 04 has a stacked structure. In this embodiment, the reflective part 04 can be formed by combining multiple film layers. This multi-layer stacked structure design helps to enhance the light blocking ability of the reflective part 04 and further improve the edge light leakage phenomenon.

[0078] In one embodiment of this application, the reflective part 04 comprises at least one of metallic silver and metallic aluminum.

[0079] Figure 26 This is a schematic diagram of a display device provided in this application.

[0080] This application provides a display device 20, such as... Figure 26 As shown, the display device 20 includes the aforementioned display panel 10. The display device 20 can be a mobile phone, or it can also be an electronic device such as a computer or television.

[0081] The edge light leakage phenomenon in the display device 20 provided in this application embodiment has been greatly improved, and the light utilization efficiency of the display device 20 during display has also been significantly improved.

[0082] The same or similar parts between the various embodiments in this specification can be referred to mutually. In particular, the device embodiments and terminal embodiments are basically similar to the method embodiments, so the description is relatively simple, and the relevant parts can be referred to the description in the method embodiments.

Claims

1. A display panel, characterized in that, Including the visible area; The display panel further includes a light guide plate and a reflective portion; the light guide plate includes a first side and a second side adjacent to the light emitting surface, the first side being located on the side of the light guide plate closer to the light source; at least a portion of the reflective portion is located on the side of the visible area closer to the edge of the light guide plate; Along a direction parallel to the plane of the display panel, the reflective portion at least partially overlaps with the second side surface.

2. The display panel according to claim 1, characterized in that, The light guide plate includes multiple grooves, which are located on the side of the visible area near the edge of the light guide plate; The reflective portion includes a first part, at least a portion of which is located within the groove along a direction perpendicular to the second side surface, and at least a portion of the first part overlaps with the second side surface.

3. The display panel according to claim 2, characterized in that, The plurality of grooves includes a first type of groove and a second type of groove. The first type of groove is disposed on the light-emitting surface side of the light guide plate, and the second type of groove is disposed on the opposite side of the light guide plate. The opposite side is disposed opposite to the light-emitting surface. Along a direction perpendicular to the plane where the display panel is located, the first type of groove and the second type of groove do not overlap.

4. The display panel according to claim 3, characterized in that, Along a direction perpendicular to the second side, the orthographic projection of the first type of groove on the cover plate overlaps with the orthographic projection of the second type of groove on the cover plate.

5. The display panel according to claim 3, characterized in that, Along a direction perpendicular to the second side, the orthographic projections of the first type of groove on the cover plate and the orthographic projections of the second type of groove on the cover plate are arranged alternately.

6. The display panel according to claim 3, characterized in that, The depth of the first type of groove is h1, the depth of the second type of groove is h2, and the thickness of the light guide plate is H, where H < h1 + h2.

7. The display panel according to claim 3, characterized in that, Multiple first-type grooves are arranged along a first path and adjacent first-type grooves are interconnected; multiple second-type grooves are arranged along a second path and adjacent second-type grooves are interconnected; wherein, the extension direction of the first path and the extension direction of the second path are parallel to the second side surface and the light-emitting surface, respectively.

8. The display panel according to claim 2, characterized in that, The plurality of grooves includes a third type of groove, which penetrates the light guide plate; The third type of groove includes a first groove and a second groove, and the first groove and the second groove are arranged alternately along a direction perpendicular to the second side.

9. The display panel according to claim 1, characterized in that, The reflective portion includes a second part and a third part; the second part covers at least a portion of the second side surface; the third part overlaps with the light-emitting surface along a direction parallel to the plane of the display panel, and the third part is located on the side of the visible area near the edge of the light guide plate.

10. The display panel according to claim 9, characterized in that, The display panel further includes a protective structure located on the side of the reflective portion away from the light guide plate; The protective structure at least partially covers the reflective part.

11. The display panel according to claim 10, characterized in that, The protective structure includes tungsten carbide.

12. The display panel according to claim 10, characterized in that, The thickness w of the protective structure satisfies: 5um ≤ w ≤ 20um.

13. The display panel according to claim 1, characterized in that, The second side is curved, and the orthographic projection of the edge of the second side onto the cover plate is wavy. The light guide plate includes a plurality of grooves, among which a third groove is located between the second side and the visible area; The reflective portion includes a fourth part and a fifth part; at least a portion of the fourth part is located within the third groove, and the fifth part is located on the second side away from the visible area; Along a direction away from the visible area, the fourth portion and the fifth portion respectively at least partially overlap with the second side surface.

14. The display panel according to claim 1, characterized in that, The light guide plate also includes a notch, which is located on the second side and recessed toward the visible area; at least a portion of the reflective portion fills the notch.

15. The display panel according to claim 14, characterized in that, The width of the notch gradually decreases along the direction close to the visible area.

16. The display panel according to claim 1, characterized in that, The distance ΔL between the reflective part and the visible area satisfies: ΔL≥0.2mm.

17. The display panel according to claim 1, characterized in that, The reflective part has a layered structure.

18. The display panel according to claim 1, characterized in that, The reflective component comprises at least one of metallic silver and metallic aluminum.

19. A display device, characterized in that, Includes the display panel as described in any one of claims 1-18.

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