Display device and method of manufacturing the same

Abstract

The application provides a display device and a manufacturing method thereof, relates to the technical field of display, and aims to improve the distance unevenness problem of a display area and a shielding area. The display device comprises a display module, the display module comprises a display panel and a functional layer located on the light-emitting side of the display panel, the display panel comprises a display area and a first non-display area surrounding the display area, and the functional layer comprises a first part, the first part overlaps the first non-display area in the thickness direction of the display panel, the first part is light-shielding and comprises a photosensitive material.

Description

Technical Field

[0001] This invention relates to the field of display technology, and in particular to a display device and its manufacturing method. Background Technology

[0002] As the bezel width of display panels continues to shrink, defects caused by manufacturing precision are significantly amplified. For example, due to the influence of the positional accuracy of the light-shielding ink and the alignment accuracy between the cover plate and the display panel, the distance between the display area and the shielding area of ​​the display panel exhibits a noticeable asymmetrical distribution around the perimeter, resulting in visually visible defects in the size of the bezels. Summary of the Invention

[0003] This invention provides a display device and its manufacturing method to improve the problem of uneven distance between the display area and the obstruction area.

[0004] In a first aspect, embodiments of the present invention provide a display device, including a display module, the display module including a display panel and a functional layer located on the light-emitting side of the display panel, wherein the display panel includes a display area and a first non-display area surrounding the display area; the functional layer includes a first portion, which overlaps with the first non-display area in the thickness direction of the display panel, the first portion being light-shielding and including a photosensitive material.

[0005] Secondly, based on the same inventive concept, embodiments of the present invention also provide a method for manufacturing a display device, including forming a display module. The process of forming the display module includes: manufacturing a display panel, the display panel including a display area and a first non-display area surrounding the display area; and distributing a functional layer on the light-emitting side of the display panel, the functional layer including a first portion, the first portion overlapping the first non-display area in the thickness direction of the display panel, wherein the first portion is light-shielding and includes a photosensitive material.

[0006] The technical solution provided by the embodiments of the present invention has the following beneficial effects: In this embodiment of the invention, a first portion formed of photosensitive material can be used to replace traditional light-shielding ink to form the shielding area. The photosensitive material is formed with high precision; for example, it can be formed at a specific location through a printing process with high precision, reaching tens of micrometers. Furthermore, the precision of the photosensitive position during light irradiation is also very high, similarly reaching tens of micrometers. Therefore, the first portion formed using the photosensitive material can have high positional accuracy, with very small positional deviation of the shielding area. This significantly reduces the impact of the shielding area positional deviation on the distance between the display area and the shielding area on different sides (e.g., opposite sides).

[0007] Moreover, the positional offset of the obscuring area is reduced, and the safety distance reserved between the obscuring area and the display area can be reduced. With a certain distance from the display area to the edge of the cover plate, the width ratio of the obscuring area is increased, which can also weaken the visual perception of the distance difference between the display area and the obscuring area on different sides and reduce the visual difference between the size sides.

[0008] Furthermore, reducing the positional offset of the shielding area also helps to reduce the attachment misalignment between the cover plate and the display panel. For example, before attaching the cover plate to the display panel, the photosensitive material can be light-treated to form all or part of the first part. Because the positional accuracy of this shielding part is high, it can be used for positioning when attaching the cover plate to the display panel, thereby improving the alignment accuracy between the cover plate and the display panel, effectively reducing the attachment misalignment between the cover plate and the display panel, and thus significantly reducing the impact of the attachment misalignment on the distance between the display area and the shielding area on different sides.

[0009] In summary, the technical solution provided by the embodiments of the present invention can effectively improve the problem of uneven distance between the display area and the obstruction area on different sides, thereby mitigating the defects of large and small bezels and improving product performance. This technical solution is well-suited for narrow-bezel products, reducing the proportion of obstruction area position offset and cover plate / display panel attachment misalignment in the bezel width, and maximizing the width proportion of the obstruction area, making the distance between the display area and the obstruction area on different sides more consistent, or making the distance difference between the display area and the obstruction area on different sides visually invisible. Attached Figure Description

[0010] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0011] Figure 1 A schematic diagram illustrating the distance distribution between the display area and the obstruction area provided in an embodiment of the present invention; Figure 2 A schematic diagram of a display device provided in an embodiment of the present invention; Figure 3 Another schematic diagram of the display device provided in the embodiment of the present invention; Figure 4 This is another schematic diagram of a display device provided in an embodiment of the present invention; Figure 5 This is another schematic diagram of a display device provided in an embodiment of the present invention; Figure 6This is another schematic diagram of a display device provided in an embodiment of the present invention; Figure 7 This is another schematic diagram of a display device provided in an embodiment of the present invention; Figure 8 This is a schematic diagram illustrating the fabrication of a display device provided in an embodiment of the present invention; Figure 9 This is another schematic diagram of a display device provided in an embodiment of the present invention; Figure 10 This is another schematic diagram of a display device provided in an embodiment of the present invention; Figure 11 This is another schematic diagram of a display device provided in an embodiment of the present invention; Figure 12 This is another process schematic diagram of the display device provided in an embodiment of the present invention; Figure 13 This is another process schematic diagram of the display device provided in an embodiment of the present invention; Figure 14 This is a schematic diagram of another manufacturing process of the display device provided in an embodiment of the present invention; Figure 15 This is another process schematic diagram of the display device provided in an embodiment of the present invention; Figure 16 This is another schematic diagram of a display device provided in an embodiment of the present invention; Figure 17 This is another schematic diagram of a display device provided in an embodiment of the present invention; Figure 18 This is another schematic diagram of a display device provided in an embodiment of the present invention; Figure 19 This is another schematic diagram of a display device provided in an embodiment of the present invention; Figure 20 This is another schematic diagram of a display device provided in an embodiment of the present invention; Figure 21 A schematic diagram of a display panel in an unfolded state according to an embodiment of the present invention; Figure 22 This is another schematic diagram of a display device provided in an embodiment of the present invention; Figure 23 This is another schematic diagram of a display device provided in an embodiment of the present invention; Figure 24 This is another schematic diagram of a display device provided in an embodiment of the present invention; Figure 25 This is another process schematic diagram of the display device provided in an embodiment of the present invention; Figure 26 This is another process schematic diagram of the display device provided in an embodiment of the present invention; Figure 27 This is another process schematic diagram of the display device provided in an embodiment of the present invention; Figure 28 This is another schematic diagram of a display device provided in an embodiment of the present invention; Figure 29 This is another schematic diagram illustrating the fabrication of the display device provided in an embodiment of the present invention. Detailed Implementation

[0012] To better understand the technical solution of the present invention, the embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0013] It should be understood that the described embodiments are merely some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0014] The terminology used in the embodiments of this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention. The singular forms “a,” “the,” and “the” used in the embodiments of this invention are also intended to include the plural forms unless the context clearly indicates otherwise.

[0015] 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, and B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0016] In traditional display modules, a ring of light-shielding ink is first printed on one side of the cover plate. Then, the cover plate with light-shielding ink is attached to the display panel. After attachment, the light-shielding ink forms a black shielding area around the display area of ​​the display panel, which is used to shield the metal traces of the display panel in the bezel area.

[0017] However, the current positional accuracy of the light-shielding ink and the alignment accuracy between the cover plate and the display panel are both relatively low. In the pad printing process, the printing accuracy of the light-shielding ink is only 0.1mm, resulting in a positional offset of approximately 0.1mm. The accuracy of the bonding equipment also causes a bonding misalignment of approximately 0.1mm between the cover plate and the display panel. The combination of these two misalignments results in a noticeable asymmetrical distribution of the distance between the display area and the shielding area on different sides. See, for example... Figure 1 , Figure 1This is a schematic diagram of the distance distribution between the display area and the obstruction area provided in an embodiment of the present invention. The distance between the display area AA and the obstruction area VA on the left and right sides is significantly different. The distance r1 on one side is significantly smaller than the distance r2 on the other side. This uneven distance will cause the display device to exhibit visually visible defects in the size of the edges.

[0018] Furthermore, in order to avoid the light-shielding ink from obstructing the display area after application, a sufficient safety distance needs to be reserved between the preset position of the light-shielding ink and the display area. This safety distance must provide leeway for both the positional offset of the light-shielding ink and the attachment misalignment between the cover plate and the display panel. This will significantly compress the width of the obstructed area, making the obstructed area narrower and making the aforementioned uneven distance problem more visually obvious.

[0019] Especially with the continuous development of narrow bezel technology, the bezel width of the display panel is getting smaller and smaller. When the design distance between the display area and the edge of the cover plate is narrowed to 1mm or less, the above problems will become more obvious.

[0020] In response to this, this invention proposes a technical solution that utilizes photosensitive materials to replace traditional light-blocking inks to form a blocking area, thereby effectively improving the issue of uneven edges.

[0021] This invention provides a display device. Figure 2 This is a schematic diagram of a display device provided in an embodiment of the present invention. Figure 3 Another schematic diagram of the display device provided in the embodiment of the present invention, such as... Figure 2 and Figure 3 As shown, the display device includes a display module 100, which includes a display panel 1 and a functional layer 2 located on the light-emitting side of the display panel 1.

[0022] The display panel 1 includes a display area 3 and a first non-display area 4 surrounding the display area 3.

[0023] The functional layer 2 includes a first part 5, which overlaps with the first non-display area 4 in the thickness direction of the display panel 1. The first part 5 is light-shielding and includes a photosensitive material.

[0024] It should be noted that "the first part 5 is light-shielding and includes photosensitive material" means that the light-shielding property of the first part 5 is formed by the photosensitive material it includes becoming darker (e.g., blackening) during the manufacturing process. Alternatively, it can be described as "the first part 5 is light-shielding and includes photosensitive material that has become blackened by light" or "the first part 5 is light-shielding and includes photosensitive material that has become darker by light".

[0025] In this embodiment of the invention, a first portion 5 formed of photosensitive material can be used to replace traditional light-shielding ink to form the shielding area. The photosensitive material is formed with high precision. For example, the photosensitive material can be formed at a specific position through a printing process with high precision, reaching tens of micrometers. Similarly, when the photosensitive material is subjected to light irradiation, the precision of the photosensitive position is also very high, reaching tens of micrometers. Therefore, the first portion 5 formed using the photosensitive material can have high positional accuracy, and the positional deviation of the shielding area is very small. This can significantly reduce the impact of the positional deviation of the shielding area on the distance between the display area 3 on different sides (e.g., opposite sides) and the shielding area.

[0026] Moreover, the positional offset of the obscuring area is reduced, and the safety distance reserved between the obscuring area and the display area 3 can be reduced. With a certain distance from the display area 3 to the edge of the cover plate, the width ratio of the obscuring area is increased, which can also weaken the visual perception of the distance difference between the display area 3 and the obscuring area on different sides and reduce the visual difference between the size sides.

[0027] Furthermore, reducing the positional offset of the shielding area will also help reduce the attachment misalignment between the cover plate and the display panel 1. For example, the functional layer 2 can be formed on the cover plate side. Before the cover plate is attached to the display panel 1, the photosensitive material can be light-treated to form all or part of the first part 5. Because the positional accuracy of the formed light-shielding part is high, it can be used for positioning when the cover plate is attached to the display panel 1, thereby improving the alignment accuracy between the cover plate and the display panel 1, effectively reducing the attachment misalignment between the cover plate and the display panel 1, and thus significantly reducing the impact of the attachment misalignment on the distance between the display area 3 and the shielding area on different sides.

[0028] In summary, the technical solution provided by the embodiments of the present invention can effectively improve the problem of uneven distance between the display area 3 and the obscuring area on different sides, thereby mitigating the defects of large and small edges and improving product performance. This technical solution is well-suited for narrow-bezel products, reducing the proportion of obscuring area position offset and cover plate and display panel 1 attachment misalignment in the bezel width, and maximizing the width proportion of the obscuring area, so that the distance between the display area 3 and the obscuring area on different sides tends to be consistent, or makes the distance difference between the display area 3 and the obscuring area on different sides visually invisible.

[0029] In this embodiment of the invention, the application of light-shielding ink on the cover plate side can be eliminated. After eliminating the light-shielding ink, when the functional layer is formed on the panel side, the distance between the display area and the shielding area is determined after the functional layer is formed. This distance is only affected by the positional accuracy of the shielding area and is no longer affected by the subsequent misalignment between the cover plate and the display panel. Therefore, the influence of the misalignment between the cover plate and the display panel on the uneven distance between the display area and the shielding area on different sides can be eliminated.

[0030] Alternatively, light-shielding ink can be applied to the side of the cover plate. Figure 4 This is another schematic diagram of the display device provided in an embodiment of the present invention. Figure 5 Another schematic diagram of the display device provided in the embodiment of the present invention, such as... Figure 4 and Figure 5 As shown, the display module also includes a cover plate 15 and a light-shielding ink 40. The cover plate 15 is located on the side of the functional layer 2 away from the display panel 1, and the light-shielding ink 40 is located on the surface of the cover plate 15 close to the display panel 1.

[0031] The light-shielding ink 40 includes a first shielding edge 41 near the display area 3, and the first part 5 includes a second shielding edge 42 near the display area 3. The second shielding edge 42 is located on the side of the first shielding edge 41 near the display area 3. That is, the boundary of the shielding area near the display area 3 is defined by the position of the second shielding edge 42. The light-shielding ink 40 has a small width, which can reduce the influence of the attachment misalignment between the cover plate 15 and the display panel 1 on the position of the boundary of the shielding area near the display area 3, thereby reducing the influence of the attachment misalignment on the distance between the display area 3 and the shielding area on different sides.

[0032] In some embodiments, to prevent light leakage from the edge of the panel to the edge of the cover plate, the light-shielding ink 40 overlaps with the first portion 5 in the thickness direction of the display panel, and the width h of the overlapping portion is greater than or equal to 0.1 mm.

[0033] In some implementations, see again Figure 2 and Figure 3 The functional layer 2 also includes a second part 6, which overlaps with the display area 3 in the thickness direction of the display panel 1. The first part 5 and the second part 6 are connected, and the first part 5 is light-transmitting.

[0034] It should be noted that the connection between the first part 5 and the second part 6 means that the first part 5 and the second part 6 are an integral structure, with no breaks, gaps, or physical separation between them.

[0035] When the functional layer 2 also includes a second part 6 that overlaps with the display area 3, the area where the first part 5 is located is a photosensitive color-changing area, while the area where the second part 6 is located can serve as a supporting transparent functional area. This transparent functional area can help to make the width range of the photosensitive color-changing area more flexibly set, or it can be used to reduce step differences, etc.

[0036] For example, in some structures, the second part 6 is light-transmitting and includes a photosensitive material. It should be noted that "the second part 6 is light-transmitting and includes a photosensitive material" means that the photosensitive material in the second part 6 is not subjected to light treatment during the preparation process and remains in a light-transmitting state, thus giving the second part 6 light-transmitting properties. Alternatively, it can be described as "the second part 6 is light-transmitting and includes a photosensitive material that does not change color under light."

[0037] This structure means that a large area of ​​photosensitive material is formed in functional layer 2 before light treatment. This allows functional layer 2 to meet the width requirements of the blocking area for various sizes of display panels 1. For example, when applied to a display panel with a narrow bezel, only the narrowest ring of the photosensitive material can be illuminated to darken it, making the resulting blocking area compatible with the narrow bezel display panel. When applied to a display panel with a wide bezel, the wider ring of the photosensitive material can be illuminated to darken it, making the resulting blocking area compatible with the wide bezel display panel. In particular, when functional layer 2 is formed on the cover plate side, this cover plate with a large area of ​​photosensitive material can be adapted to display panels 1 with various bezel sizes, improving the versatility of the cover plate. During the manufacturing process, the portion of photosensitive material that has been darkened by light exposure forms the first light-blocking portion 5, while the portion of photosensitive material that has not been darkened by light exposure forms the second light-transmitting portion 6.

[0038] Alternatively, in some structures, the second part 6 does not include photosensitive material. For example, the functional layer 2 is a full-coverage film layer, but only includes photosensitive material in the area where the first part 5 is located. Such a full-coverage functional film layer can be used to reduce step differences or reused as an adhesive layer to achieve the attachment of some structures.

[0039] In some implementations... Figure 6 Another schematic diagram of the display device provided in the embodiment of the present invention, such as... Figure 6 As shown, the second part 6 is a ring structure, and in the thickness direction of the display panel 1, the second part 6 only overlaps with a portion of the display area 3. This shape of the second part 6 can focus more on providing a certain margin for the width range of the photosensitive color-changing area. The second part 6 does not cover the display area 3, which can improve the transmittance at the location of the display area 3.

[0040] Or, see again Figure 2 In the thickness direction of the display panel 1, the second part 6 covers the display area 3. In this design, the functional layer 2 is a full-film layer, which can be more focused on reducing step differences or reused as an adhesive layer to achieve the attachment of some structures.

[0041] In some implementations... Figure 7 Another schematic diagram of the display device provided in the embodiment of the present invention, such as... Figure 7 As shown, the functional layer 2 includes a first sub-layer 7, which includes a light-transmitting substrate 8. In the thickness direction of the display panel 1, the light-transmitting substrate 8 overlaps with the display area 3 and the first non-display area 4.

[0042] The light-transmitting substrate 8 includes a first substrate portion 9, and the first portion 5 of the first sublayer 7 includes the first substrate portion 9 and photosensitive particles 10 filled in the first substrate portion 9. That is, the photosensitive material in the first sublayer 7 includes photosensitive particles 10, and the light-blocking properties of the first portion 5 in the first sublayer 7 are formed by the photosensitive particles 10 turning black when exposed to light.

[0043] The filling of photosensitive particles 10 into the light-transmitting substrate 8 can be achieved in the following ways. Figure 8 This is a schematic diagram illustrating the fabrication of a display device provided in an embodiment of the present invention, such as... Figure 8 As shown, firstly, a light-transmitting substrate 8 is formed on one side of the display panel 1. Then, at least at the position where the light-transmitting substrate 8 overlaps with the first non-display area 4, a solution containing photosensitive particles 10 (hereinafter referred to as photosensitive particle solution) is printed, such as by inkjet printing. Then, the photosensitive particle solution is allowed to penetrate into the light-transmitting substrate 8 by means of pressure or the like. Then, at at least a portion of the position where it overlaps with the first non-display area 4, the photosensitive particles 10 are irradiated with light to make them black, forming the first part 5.

[0044] Among them, it can be like Figure 8 As shown, the photosensitive particle solution is printed only at least a portion of the area overlapping with the first non-display area 4. Afterwards, pressure is applied to allow it to penetrate the light-transmitting substrate 8, and all the photosensitive particles 10 are then illuminated, causing them to darken and form the first portion 5. Compared to the printing precision of light-blocking ink, the printing precision is very high, reaching the 10μm-30μm range. Therefore, the positional precision of the photosensitive particle solution is very high, resulting in a high positional precision for the formed first portion 5. The positional offset of the blocking area has minimal impact on the distance between the display area 3 on different sides and the blocking area, thus effectively improving the issue of large and small edges.

[0045] Alternatively, photosensitive particles 10 can be printed simultaneously at the overlapping portion with the display area 3. After subsequent pressure is applied to allow them to penetrate the light-transmitting substrate 8, the photosensitive particles 10 are only illuminated at least a portion overlapping with the first non-display area 4, causing some of the photosensitive particles 10 to darken and form the first portion 5. Compared to the printing precision of light-blocking ink, the positional precision of the light-sensitive ink is also very high, reaching tens of micrometers. Therefore, the positional precision of the formed first portion 5 is also high, and the positional deviation of the blocking area has little impact on the distance between the display area 3 and the blocking area on different sides, thus effectively improving the issue of large and small edges.

[0046] In this structure, the first part 5 in the first sub-layer 7 can replace the traditional light-shielding ink to form a shielding area. Therefore, the light-shielding ink can be eliminated on the cover side. The attachment misalignment between the cover and the display panel 1 will not affect the distance between the display area 3 and the shielding area on different sides, thus eliminating the effect of attachment misalignment on the uneven distance on different sides.

[0047] Furthermore, based on the precision advantage of printing or light-sensing position at the tens of micrometer level, the reserved safety distance between the occlusion area and the display area 3 can be greatly reduced, the width ratio of the occlusion area can be greatly increased, the visual perception of the large and small sides can be weakened simultaneously, and the occlusion performance of the occlusion area can be effectively improved.

[0048] In some implementations, see Figure 7 The light-transmitting substrate 8 also includes a second substrate portion 11, which is connected to the first substrate portion 9. The first sublayer 7 includes a second portion 6, which only includes the second substrate portion 11 and does not contain photosensitive particles 10. The fabrication method of this structure can be found in [reference needed]. Figure 8 The photosensitive particle solution is printed only at least a portion of the location overlapping with the first non-display area 4. After being pressurized and allowed to penetrate the light-transmitting substrate 8, all the photosensitive particles 10 are irradiated to turn them black and form the first part 5.

[0049] As mentioned earlier, due to the high printing precision, the impact of the positional offset of the obscuring area on the distance between the display area 3 and the obscuring area on different sides can be reduced. On the other hand, in this structure, the position of the photosensitive particles 10 is confined to the location of the first part 5, thus eliminating the restriction on the illumination area. Even if the entire area of ​​the light-transmitting substrate 8 is illuminated, the first sub-layer 7 will not obscure the display area 3. In some embodiments, photosensitive particles 10 with a color-changing response band in the visible light band can be selected, and then the photosensitive particles 10 can be illuminated by the light emitted from the display panel through screen dotting. When the display panel is dotted, the light emitted by the light-emitting element in the display panel 1 obliquely enters the photosensitive particles 10, photoexcites the photosensitive particles 10, and makes the photosensitive particles 10 black. This not only eliminates the need for an external light source, but also allows the photoexcitation process of the photosensitive particles 10 to be synchronized with the screen dotting test process, saving time. On the other hand, since the second part 6 does not contain photosensitive particles 10, it can also avoid the photosensitive particles 10 affecting the light output of the display area 3 and optimize the display performance.

[0050] In some implementations, see again Figure 7 The photosensitive particle 10 includes a photosensitive particle body 12 and a black outer layer 13 covering the photosensitive particle body 12.

[0051] The black outer layer 13 can be formed by the reaction of the chromogenic layer. In some structures, the unexposed photosensitive particle 10 includes a photosensitive particle body 12 and a chromogenic layer covering the photosensitive particle body 12. After the photosensitive particle 10 is exposed to light, the photosensitive particle body 12 absorbs light, and valence band electrons are excited to the conduction band, forming electron-hole pairs. Electrons transfer to the chromogenic layer molecules on the surface of the photosensitive particle body 12, while holes undergo oxidation reactions with the chromogenic layer, thereby achieving molecular structure rearrangement and forming a quinone structure with conjugated large π bonds, which absorbs light significantly, achieving black display, thus making the photosensitive particle 10 black after exposure to light.

[0052] The color developer layer may include azo compounds, which are colorless or light-colored. When the photosensitive particles 10 are exposed to light, the azo compounds react to form a stable structure that can maintain a long-term black state.

[0053] The photosensitive particle body 12 may include photosensitive nanoparticles, such as at least one of inorganic photosensitive semiconductor nanoparticles (gallium nitride / cadmium sulfide), organic-inorganic hybrid nanoparticles (titanium dioxide / polypyrrole hybrid), and organic photochromic nanoparticles (stilbene-based). The size of the photosensitive particle body 12 may be greater than or equal to 20 nm-100 nm, which can be understood as the diameter of the photosensitive particle body 12.

[0054] In some implementations... Figure 9 Another schematic diagram of the display device provided in the embodiment of the present invention, such as... Figure 9 As shown, the edge of the first part 5 near the display area 3 is a non-straight edge.

[0055] When the photosensitive particle solution is formed on one side of the light-transmitting substrate 8 by inkjet printing, the edge of the photosensitive particle solution will be non-flush due to slight overflow. When pressure is applied to make it penetrate into the light-transmitting substrate 8 and the photosensitive particles 10 are blackened by light to form the first part 5, the edge of the first part 5 near the display area 3 will also be non-straight.

[0056] However, it should be noted that the printing precision of the photosensitive particle solution is very high and the overflow amplitude is also small. Therefore, the degree of "non-straightness" of its edge will also be very small. This kind of edge non-straightness has little impact on the distance between the display area 3 and the light-shielding area on different sides, and is far less than the impact of the positional accuracy of traditional light-shielding ink.

[0057] In some implementations, see again Figure 9 The maximum distance k between the edge of the first part 5 near the display area 3 and the display area 3 is less than or equal to 30 μm. In other words, the maximum distance between the display area 3 and the photosensitive particles 10 in the first part 5 is less than or equal to 30 μm.

[0058] 30μm provides sufficient margin for printing accuracy. The maximum distance between the edge of the first part 5 near the display area 3 and the display area 3 is less than or equal to 30μm. This means that at different positions, the distance between the edge of the first part 5 near the display area 3 and the display area 3 is less than or equal to 30μm. At this distance level, the unevenness of the distance on different sides is difficult to be visually visible. Moreover, when the distance between the display area 3 and the edge of the cover plate is constant, the distance between the display area 3 and the obscuring area is very small, and the width of the obscuring area is greatly increased, which can further reduce the visual perception of uneven distance on different sides.

[0059] In some implementations... Figure 10 Another schematic diagram of the display device provided in the embodiment of the present invention, such as... Figure 10 As shown, the display module 100 also includes a polarizer 14 and a cover plate 15, with the cover plate 15 located on the side of the polarizer 14 away from the display panel 1.

[0060] The light-transmitting substrate 8 includes a first optical adhesive layer 16, which is located between the polarizer 14 and the cover plate 15.

[0061] The optical adhesive layer is a full-coverage film layer with superior optical properties. The translucent substrate 8 is reused with the optical adhesive layer, allowing it to simultaneously form a shielding area and bond the polarizer 14 and the cover plate 15, thus eliminating the need for an additional adhesive layer, saving costs and reducing thickness. Furthermore, as mentioned earlier, the photosensitive particles 10 can be photoexcited by dotting the display panel. By reusing the translucent substrate 8 as the optical adhesive layer between the polarizer 14 and the cover plate 15, and ensuring a sufficient distance between the translucent substrate 8 and the display panel 1, the light emitted by the light-emitting element can enter the translucent substrate 8 obliquely over a wider area, enhancing the photochromic effect of the photosensitive particles 10.

[0062] The orthographic projection of the polarizer 14 on the plane of the display panel 1 and the orthographic projection of the first optical adhesive layer 16 on the plane of the display panel 1 can coincide. That is, in the manufacturing process, the polarizer 14 and the first optical adhesive layer 16 can be supplied as a whole. The polarizer 14 and the first optical adhesive layer 16 supplied as a whole are attached to the display panel 1 together. This can avoid the alignment deviation generated when the first optical adhesive layer 16 and the polarizer 14 are attached, which will affect the positional accuracy of the first part 5.

[0063] In some implementations, see again Figure 10 The display module 100 further includes a second optical adhesive layer 17, which is located between the display panel 1 and the polarizer 14 and is in contact with and bonded to the polarizer 14. The polarizer 14 covers the second optical adhesive layer 17, and there is a gap between the edge of the second optical adhesive layer 17 and the edge of the polarizer 14.

[0064] In conventional manufacturing processes, the polarizer 14 and the pressure-sensitive adhesive (PSA) attached to its lower surface are supplied as a single unit. In this embodiment of the invention, the PSA is eliminated, and a second optical adhesive layer 17 is used to bond the polarizer 14 and the display panel 1. In the manufacturing process, the second optical adhesive layer 17 is first attached to one side of the display panel 1. Then, the integrally supplied polarizer 14 and the first optical adhesive layer 16 are attached above the second optical adhesive layer 17. Subsequently, light-shielding photosensitive particles 10 are formed in the first optical adhesive layer 16 through processes such as printing a photosensitive particle solution, pressure infiltration, and photocuring.

[0065] In the original structure where the polarizer 14 and pressure-sensitive adhesive are integrally supplied, the edges of the pressure-sensitive adhesive and the polarizer 14 are flush. In this embodiment of the invention, the pressure-sensitive adhesive is eliminated, and a separate second optical adhesive layer 17 is pre-attached to one side of the display panel 1. The size of the selected second optical adhesive layer 17 can be more flexible. For example, see... Figure 10 The size of the second optical adhesive layer 17 can be smaller than that of the polarizer 14. The edge of the second optical adhesive layer 17 is recessed relative to the edge of the polarizer 14, so that there is a certain gap between the edge of the second optical adhesive layer 17 and the edge of the polarizer 14, thereby achieving bonding. Figure 28 This gap can be used to fill the subsequent black encapsulating adhesive 300 to prevent light leakage at the edges.

[0066] In some implementations... Figure 11 Another schematic diagram of the display device provided in the embodiment of the present invention, such as... Figure 11 As shown, the display module 100 also includes a cover plate 15.

[0067] Functional layer 2 includes a second sublayer 18, which is located on the side of cover plate 15 facing display panel 1. The first portion 5 of the second sublayer 18 includes photosensitive ink 19. That is, the photosensitive material in the second sublayer 18 includes photosensitive ink 19, and the light-blocking properties of the first portion 5 in the second sublayer 18 are formed by the photosensitive ink 19 turning black when exposed to light.

[0068] Compared to the printing precision of traditional light-blocking inks, the light-sensing positional precision is very high, around 30μm-50μm. Therefore, the positional precision of the first part 5 in the second sub-layer 18 is relatively high. Reducing the positional offset of the blocking area has little impact on the distance deviation between the display areas 3 on both sides and the blocking area, effectively improving the issue of large and small edges. In addition, based on the advantage of the light-sensing positional precision at the tens of micrometer level, the safety distance between the preset position of the blocking area and the display area 3 can be significantly reduced, and the proportion of the width of the blocking area is greatly increased. This not only simultaneously weakens the visual perception of large and small edges but also effectively improves the blocking performance of the blocking area.

[0069] Furthermore, the second sub-layer 18 is formed on the cover plate side. After the photosensitive material is coated on one side of the cover plate 15, and before the cover plate 15 is attached to the display panel 1, the photosensitive material can be light-treated to form all or part of the first part 5. Since the positional accuracy of the formed light-shielding part is high, the light-shielding part can be used for positioning when the cover plate 15 is attached to the display panel 1, thereby improving the alignment accuracy between the cover plate 15 and the display panel 1, effectively reducing the attachment misalignment between the cover plate 15 and the display panel 1, and thus significantly reducing the impact of the attachment misalignment on the distance between the display area 3 and the shielding area on different sides.

[0070] Furthermore, after the cover plate 15 is attached to the display panel 1, the position of the display area 3 can be detected to determine the misalignment between the cover plate 15 and the display panel 1. Then, the photosensitive material can be light-treated according to the misalignment to form all or part of the first part 5, thereby automatically setting the boundary position of the occlusion area and compensating for the impact of the attachment misalignment between the cover plate 15 and the display panel 1 on the distance between the display area 3 and the occlusion area on different sides.

[0071] The following example illustrates this.

[0072] 1. In one embodiment, a light treatment can be performed before the cover plate 15 is attached to the display panel 1 and after the cover plate 15 is attached to the display panel 1, and the two light treatments together form the first part 5.

[0073] Figure 12 This is another process schematic diagram of the display device provided in an embodiment of the present invention. Figure 13 This is another process schematic diagram of the display device provided in an embodiment of the present invention, such as... Figure 12 and Figure 13As shown, after applying photosensitive ink 19 to one side of the cover plate 15, the photosensitive ink 19 is first subjected to light treatment, causing part of the photosensitive ink 19 to turn black and form the first sub-masking portion 20. Then, the cover plate 15 is aligned and attached to the display panel 1. During the attachment process, the first sub-masking portion 20 can be used for positioning. Because the positional accuracy of the first sub-masking portion 20 is high, the alignment accuracy of the cover plate 15 and the display panel 1 can be effectively improved and reduced, thus reducing their misalignment. Next, the position of the display area 3 is detected to determine the misalignment between the cover plate 15 and the display panel 1. For example, the position of the display area 3 can be detected by an automatic optical inspection (AOI) device to determine whether the distance between the display area 3 and the edge of the cover plate 15 and the first sub-masking portion 20 is consistent on both sides. This type of device has high detection accuracy, reaching about 50μm, and the detection of the position of the display area 3 will be more accurate. Next, based on the misalignment, the photosensitive ink 19 undergoes another light treatment, causing a portion of the photosensitive ink 19 to darken and form a second sub-masking portion 21. The positions of both the first sub-masking portion 20 and the second sub-masking portion 21 correspond to the first non-display area 4, and the second sub-masking portion 21 is located on the side of the first sub-masking portion 20 closer to the display area 3. The first sub-masking portion 20 and the second sub-masking portion together constitute the first part 5. The second light treatment can set the boundary of the masking area based on the misalignment between the cover plate 15 and the display panel 1 to compensate for the uneven distance between the display area 3 and the masking area on different sides due to the attachment misalignment between the cover plate 15 and the display panel 1. After the second light treatment, the distance between the display area 3 and the masking area on different sides, for example, on opposite sides, can be made more consistent, thereby effectively improving the issue of large and small edges. Moreover, in this structure, because the light sensing position accuracy is high, the safety distance reserved between the boundary of the occluded area and the display area 3 can be smaller when the second light is applied. The width ratio of the occluded area is increased, and the visual perception of the large and small sides can be weakened at the same time.

[0074] In the above process, when there is an attachment misalignment between the cover plate 15 and the display panel 1, the width of the second sub-blocking portion 21 can be different on different sides of the display area 3, such as on opposite sides of the display area 3, thereby making the width of the first portion 5 different. When the cover plate 15 and the display panel 1 are precisely aligned, the width of the second sub-blocking portion 21 can be the same on different sides of the display area 3, such as on opposite sides of the display area 3, thereby making the width of the first portion 5 the same.

[0075] Second, in one embodiment, the first part 5 can be formed by a single light treatment process after the cover plate 15 is attached to the display panel 1.

[0076] Figure 14 This is another process schematic diagram of the display device provided in the embodiments of the present invention, such as... Figure 14As shown, after applying photosensitive ink 19 to one side of the cover plate 15, the cover plate 15 is first aligned and attached to the display panel 1. Then, the position of the display area 3 is detected to determine the misalignment between the cover plate 15 and the display panel 1. As mentioned earlier, the position of the display area 3 can be detected by an automatic optical inspection device to determine whether the distance between the display area 3 and the edge of the cover plate 15 and the first sub-shielding part 20 is consistent on both sides. Then, based on the misalignment, the photosensitive ink 19 is subjected to light treatment, causing some of the photosensitive ink 19 to turn black and form the first part 5. This light treatment can set the boundary of the shielding area according to the misalignment between the cover plate 15 and the display panel 1 to compensate for the problem of uneven distance between the display area 3 and the shielding area on different sides due to the attachment misalignment of the cover plate 15 and the display panel 1. After this light treatment, the distance between the display area 3 and the shielding area on different sides, such as on both sides, can tend to be consistent, thereby effectively improving the problem of large and small edges. Moreover, in this structure, because the light sensing position accuracy is high, the safety distance reserved between the boundary of the occluded area and the display area 3 can be smaller when the second light is applied. The width ratio of the occluded area is increased, and the visual perception of the large and small sides can be weakened at the same time.

[0077] During the above process, when there is an attachment misalignment between the cover plate 15 and the display panel 1, the width of the first portion 5 may be different on different sides of the display area 3, such as on opposite sides of the display area 3. When the cover plate 15 and the display panel 1 are precisely aligned, the width of the first portion 5 may be the same on different sides of the display area 3, such as on opposite sides of the display area 3.

[0078] Third, in one embodiment, the first part 5 can also be formed by a light treatment process before the cover plate 15 is attached to the display panel 1.

[0079] Figure 15 This is another process schematic diagram of the display device provided in the embodiments of the present invention, such as... Figure 15 As shown, after applying photosensitive ink 19 to one side of the cover plate 15, the photosensitive ink 19 is first subjected to light treatment, causing a portion of the photosensitive ink 19 to turn black and form the first part 5. Then, the cover plate 15 is attached to the display panel 1. During the attachment process, the first part 5 can be used for positioning. Because the positional accuracy of the first part 5 is high, the alignment accuracy of the cover plate 15 and the display panel 1 can be effectively improved, reducing the impact of their misalignment on the distance between the display area 3 and the obstruction area on different sides, thus improving the size difference between the large and small edges. Moreover, in this structure, because the light-sensing positional accuracy is high, the safety distance reserved between the boundary of the obstruction area and the display area 3 can be smaller, increasing the width ratio of the obstruction area and simultaneously weakening the visual perception of the large and small edges.

[0080] In this structure, the width of the first part 5 can be the same on both sides of the display area 3.

[0081] In some implementations... Figure 16 This is another schematic diagram of a display device provided in an embodiment of the present invention. Figure 17 Another schematic diagram of the display device provided in the embodiment of the present invention, such as... Figure 16 and Figure 17 As shown, the second sub-layer 18 further includes a second portion 6, which overlaps with the display area 3 in the thickness direction of the display panel 1. The first portion 5 and the second portion 6 in the second sub-layer 18 are connected. The second portion 6 in the second sub-layer 18 is light-transmitting and includes photosensitive ink 19.

[0082] It should be noted that "the second part 6 is light-transmitting and includes photosensitive ink 19" means that the photosensitive ink 19 in the second part 6 is not subjected to light treatment during the preparation process and remains in a light-transmitting state, thus giving the second part 6 light-transmitting properties. Alternatively, it can be described as "the second part 6 is light-transmitting and includes photosensitive ink 19 that does not change color when exposed to light".

[0083] The above structure means that a large area of ​​photosensitive ink 19 is coated on one side of the cover plate 15, thus providing a larger margin for the area of ​​the photosensitive color-changing zone. For example, in Figure 12 and Figure 13 In the illustrated manufacturing method, when misalignment between the cover plate 15 and the display panel 1 is detected, sufficient width of photosensitive ink 19 can still be provided for illumination to form the second sub-masking portion 21. Moreover, this cover plate 15 with a large area of ​​photosensitive material can be adapted to display panels 1 with various bezel sizes, improving the versatility of the cover plate 15.

[0084] In some structures, see Figure 16 The second part 6 in the second sub-layer 18 can be a ring structure. While providing sufficient margin for the range of the photosensitive color-changing area, the second part 6 does not cover the display area 3, which can improve the transmittance at the location of the display area 3.

[0085] Or, in some structures, see Figure 17 In the thickness direction of the display panel 1, the second portion 6 of the second sub-region covers the display area 3. At this time, the second sub-layer 18 is a full-film layer, which can be used to reduce step differences.

[0086] In some implementations... Figure 18 Another schematic diagram of the display device provided in the embodiment of the present invention, such as... Figure 18 As shown, the display module 100 includes at least two second sub-layers 18, which are stacked in a direction perpendicular to the plane of the cover plate 15. This increases the total thickness of the photosensitive ink 19, giving the area that is blackened by light a stronger light-blocking ability.

[0087] In some implementations... Figure 19 This is another schematic diagram of a display device provided in an embodiment of the present invention. Figure 19 Display panel 1 is in the unfolded state. Figure 20 This is another schematic diagram of a display device provided in an embodiment of the present invention. Figure 20 The display panel 1 in the middle is in a bent state. Figure 21 This is a schematic diagram of the display panel 1 in an unfolded state according to an embodiment of the present invention, in conjunction with... Figures 19-21 The first non-display area 4 includes a first sub-non-display area 23, a corner sub-non-display area 24, and a second sub-non-display area 25.

[0088] The first non-display area 23 includes a first region 26, a first bent region 27, and a second region 28. The first region 26 is located on one side of the display area 3 in the first direction x and is located between the display area 3 and the first bent region 27. The first bent region 27 is located between the first region 26 and the second region 28. The second region 28 is located on the backlight side of the display panel 1.

[0089] At least a portion of the second sub-non-display area 25 is located on one side of the display area 3 in the second direction y, which intersects with the first direction x. At least one second sub-non-display area 25 includes a third region 30, a second bent region 31, and a fourth region 32. The third region 30 is located between the display area 3 and the second bent region 31, the second bent region 31 is located between the third region 30 and the fourth region 32, and the fourth region 32 is located on the backlight side of the display panel 1.

[0090] The corner sub-non-display area 24 connects the first sub-non-display area 23 and the second sub-non-display area 25. It should be noted that the corner sub-non-display area 24 is the front border area of ​​the display panel 1. Specifically, the corner sub-non-display area 24 connects the front border of the first sub-non-display area 23 and the front border of the second sub-non-display area 25. For example, at least a portion of the corner non-display area 3 connects between the first region 26 of the first sub-non-display area 23 and the third region 30 of the second sub-non-display area 25.

[0091] In this embodiment of the invention, the first sub-non-display area 23 can be understood as the non-display area on the left and right sides of the display panel 1. The first sub-non-display area 23 may include a shift circuit, and at least a portion of the shift circuit is located in the second area 28. The second sub-non-display area 25 can be understood as the non-display area on the upper and lower sides of the display panel 1. The second sub-non-display area 25 corresponding to the lower non-display area may include a third area 30, a second bending area 31, and a fourth area 32. The fourth area 32 includes a bonding portion for bonding and connecting with the driver chip.

[0092] The technical solution provided in this embodiment of the invention can be applied to this type of three-sided bendable panel structure. This panel structure can achieve a three-sided ultra-narrow bezel design. For example, its bezel width can be compressed to 500μm or less. If traditional light-shielding ink is still used to form the shielding area, in order to reserve sufficient safety distance between the shielding area and the display area 3 to provide leeway for the positional offset of the light-shielding ink and the attachment misalignment of the cover plate 15 and the display panel 1, the width of the shielding area will be reduced to a narrower size, increasing the visibility of the large and small edges. However, after adopting the technical solution provided in this embodiment of the invention, the positional accuracy of the shielding area and the alignment accuracy of the cover plate 15 and the display panel 1 can be significantly improved. Therefore, it can effectively improve the problem of the large and small edges of this type of display panel 1 and achieve a better design for an ultra-narrow bezel display panel.

[0093] In some implementations... Figure 22 This is another schematic diagram of a display device provided in an embodiment of the present invention. Figure 22 Display panel 1 is in the unfolded state. Figure 23 This is another schematic diagram of a display device provided in an embodiment of the present invention. Figure 23 The display panel 1 in the middle is in a bent state, such as Figure 22 and Figure 23 As shown, the first non-display area 4 includes a first sub-non-display area 23, a corner sub-non-display area 24, and a second sub-non-display area 25. The first sub-non-display area 23 is located on one side of the display area 3 in the first direction x. One of the second sub-non-display areas 25 is located on one side of the display area 3 in the second direction y. The other second sub-non-display area 25 includes a third region 30, a second bending region 31, and a fourth region 32. The third region 30 is located on one side of the display area 3 in the second direction y and is located between the display area 3 and the second bending region 31. The second bending region 31 is located between the third region 30 and the fourth region 32. The fourth region 32 is located on the backlight side of the display panel 1. The corner sub-non-display area 24 connects the first sub-non-display area 23 and the second sub-non-display area 25.

[0094] The technical solution provided in this embodiment of the invention can also be applied to this type of single-sided bendable panel structure. By adopting the technical solution provided in this embodiment of the invention, the positional accuracy of the obscuring area and the alignment accuracy between the cover plate 15 and the display panel 1 can be significantly improved. Therefore, the issue of the large and small edges of this type of display panel 1 can be effectively addressed, achieving a better design for this type of display panel 1.

[0095] In some embodiments, the photosensitive material includes an irreversible photochromic photosensitive material. For example, the photosensitive ink 19 in the second sublayer 18 is a photosensitive, post-photosensitive, irreversible photochromic ink, such as a UA101 type photochromic ink.

[0096] Photosensitive materials include irreversible photochromic photosensitive materials, which means that the photosensitive materials included in Part 1, 5, which turn black after being exposed to light, will not fade or return to a transparent state due to light or other reasons, and their light-blocking effect remains constant over a long period of time.

[0097] And / or, the color-changing response band of the photosensitive material is located in the ultraviolet light band. For example, the photosensitive ink 19 in the second sublayer 18 changes color when excited by ultraviolet light at 365 nm.

[0098] When the functional layer 2 includes a second part 6, which is light-transmitting and includes a photosensitive material, by selecting a photosensitive material that changes color in response to ultraviolet light, this photosensitive material in the second part 6 will not change color due to the irradiation of panel light during the panel usage stage, thus maintaining the stability of its light transmission performance.

[0099] And / or, the light threshold of the photosensitive material is greater than or equal to 100 mJ / cm². For example, the light threshold of the photosensitive ink 19 in the second sublayer 18 is greater than or equal to 100 mJ / cm².

[0100] The light threshold of photosensitive materials is greater than or equal to 100 mJ / cm², meaning that the photosensitive material needs to accumulate more than 100 mJ / cm² of light energy to react and change color. Currently, the power of processing equipment is between 2000 mW / cm² and 10000 mW / cm², which can normally complete the blackening of photosensitive materials. However, the power of sunlight is relatively low, only around 100 mW / cm², which cannot meet this condition and therefore will not cause false color changes. In addition, the curing energy of the optical adhesive layer and other films between the cover plate 15 and the display panel 1 is usually around 4000 mJ / cm², which is much greater than the light threshold of the photosensitive material. Therefore, when the photosensitive material is exposed to light, these films will not be damaged.

[0101] In some implementations, see again Figure 16 The first part 5 includes a first sub-part 33 and a second sub-part 34, which are located on opposite sides of the display area 3.

[0102] The distance between the first sub-part 33 and the display area 3 is d1, and the distance between the second sub-part 34 and the display area 3 is d2. Wherein, d1 = d2, and / or, 30μm ≤ d1 ≤ 50μm, 30μm ≤ d2 ≤ 50μm. For example, d1 can be 30μm, 35μm, 40μm, 45μm, or 50μm, and d2 can be 30μm, 35μm, 40μm, 45μm, or 50μm.

[0103] As mentioned earlier, after the cover plate 15 is attached to the display panel 1, the position of the display area 3 can be detected to determine the misalignment between the cover plate 15 and the display panel 1. Then, based on the misalignment, the photosensitive material is light-treated to form all or part of the first part 5, thereby automatically setting the boundary position of the shielding area to compensate for the impact of the attachment misalignment between the cover plate 15 and the display panel 1 on the distance between the display area 3 and the shielding area on different sides. This ensures that the distance between the display area 3 and the first sub-part 33 and the second sub-part 34 remains consistent, or that the distance between the display area 3 and the first sub-part 33 and the second sub-part 34 is within a smaller range of 30μm-50μm, effectively improving the issue of large and small edges.

[0104] In some implementations, see again Figure 16 The first part 5 includes a first sub-part 33 and a second sub-part 34, which are located on opposite sides of the display area 3, and the widths of the first sub-part 33 and the second sub-part 34 are not equal.

[0105] As mentioned earlier, after the cover plate 15 is attached to the display panel 1, the position of the display area 3 can be detected to determine the misalignment between the cover plate 15 and the display panel 1. Then, the photosensitive material is illuminated according to the misalignment to form all or part of the first part 5, thereby automatically setting the boundary position of the shielding area to compensate for the impact of the attachment misalignment between the cover plate 15 and the display panel 1 on the distance between the display area 3 and the shielding area on different sides. When an attachment misalignment is detected between the cover plate 15 and the display panel 1, the widths of the first sub-part 33 and the second sub-part 34 are different so that the distance between the display area 3 and the first sub-part 33 and the second sub-part 34 can be made more consistent, effectively improving the problem of large and small edges.

[0106] In some implementations, see again Figure 9 The display panel 1 includes a first side 35. In the thickness direction of the display panel 1, a first portion 5 overlaps with the first side 35, and the side of the first portion 5 that is away from the display area 3 has a gap with the first side 35.

[0107] Taking the first sub-layer 7 as an example, when printing the photosensitive particle solution on one side of the light-transmitting substrate 8, the printing area can overflow the first side 35 so that the edges of the display panel 1 can be correspondingly provided with photosensitive particles 10, preventing dotted white spots or linear white edges from appearing at the edges of the display panel 1 due to the lack of photosensitive particles 10.

[0108] Wherein, the aforementioned first side 35 can be the edge of the non-bent side of the frame in the display panel 1, for example, Figure 21 The edge extending along the first direction x in the second non-display area 25 on the upper side, as shown in the diagram, can be the first edge 35, or... Figure 22In the upper part of the second sub-non-display area 25, the edge extending along the first direction x can be the first edge 35, and the edges extending along the second direction y in the first sub-non-display areas 23 on the left and right sides can also be the first edge 35.

[0109] In some implementations... Figure 24 Another schematic diagram of the display device provided in the embodiment of the present invention, such as... Figure 24 As shown, the display panel 1 also includes a hole area 36 and a second non-display area 37 surrounding the hole area 36, ​​with the display area 3 surrounding the second non-display area 37.

[0110] The hole area 36 can be equipped with components such as a camera to enable video recording. In this embodiment of the invention, the position of the hole area 36 is not limited; for example, the hole area 36 can be located in the middle of the upper side or at the top corner of the upper side.

[0111] The functional layer 2 also includes a third part 38, which overlaps with the second non-display area 37 in the thickness direction of the display panel 1. The third part 38 is light-shielding and includes photosensitive material.

[0112] It should be noted that "Part 38 is light-shielding and includes photosensitive material" means that the light-shielding property of Part 38 is formed by the photosensitive material it includes becoming darker (e.g., blackening) during the manufacturing process. Alternatively, it can be described as "Part 38 is light-shielding and includes photosensitive material that has become blackened by light" or "Part 38 is light-shielding and includes photosensitive material that has become darker by light".

[0113] When the display panel 1 also includes a hole area 36, ​​a photosensitive material is used to replace the light-shielding ink to form a shielding area around the hole area 36. This can improve the positional accuracy of the shielding area and effectively reduce the misalignment between the hole area 36 and the shielding area. The distance between the hole area 36 and the shielding area can be kept consistent around the perimeter.

[0114] In this embodiment of the invention, the third part 38 can be formed before the cover plate 15 is attached to the display panel 1. Then, during the attachment process of the cover plate 15 and the display panel 1, the third part 38 is used for positioning to further improve the alignment accuracy of the cover plate 15 and the display panel 1 and reduce the impact of their misalignment on the large and small sides.

[0115] For example, Figure 25 This is another process schematic diagram of the display device provided in the embodiment of the present invention. Figure 26 This is another process schematic diagram of the display device provided in the embodiments of the present invention, such as... Figure 25 and Figure 26As shown, when a light treatment is performed before the cover plate 15 is attached to the display panel 1 and after the cover plate 15 is attached to the display panel 1, and the two light treatments together form the first part 5, the third part 38 can be formed simultaneously with the formation of the first sub-shielding part 20. Therefore, during the attachment process of the cover plate 15 to the display panel 1, the first sub-shielding part 20 and the third part 38 can be used for positioning simultaneously, further reducing the attachment misalignment between the cover plate 15 and the display panel 1. Alternatively, Figure 27 This is another process schematic diagram of the display device provided in the embodiments of the present invention, such as... Figure 27 As shown, when the first part 5 is formed by only one light treatment process after the cover plate 15 is attached to the display panel 1, the photosensitive ink 19 can be light treated once before the cover plate 15 is attached to the display panel 1 to form the third part 38. Then, during the attachment process of the cover plate 15 to the display panel 1, the edge of the cover plate 15 and the third part 38 can be used for positioning at the same time. Since the positional accuracy of the third part 38 is high, the attachment misalignment between the cover plate 15 and the display panel 1 can be effectively reduced.

[0116] In some implementations... Figure 28 Another schematic diagram of the display device provided in the embodiment of the present invention, such as... Figure 28 As shown, the display device also includes a mid-frame 200 and black encapsulating adhesive 300.

[0117] The middle frame 200 includes a connected bottom 201 and a side 202.

[0118] At least a portion of the black encapsulating adhesive 300 is filled between the display module 100 and the side portion 202 of the mid-frame 200. The black encapsulating adhesive 300 includes a first encapsulation portion 301, which is located between the functional layer 2 and the side portion 202 of the mid-frame 200.

[0119] The black encapsulating adhesive 300 can be formed after the display panel 1 is bent. The black encapsulating adhesive 300 may include black LIPO (Low Injection Pressure Overmolding) adhesive, which has high light-shielding properties. After sealing and filling with it, the shading performance at the bezel position can be further improved.

[0120] The black encapsulating adhesive 300 includes a first encapsulation portion 301 located between the functional layer 2 and the side portion 202 of the middle frame 200. The first encapsulation portion 301 can seal and fill the gap between the functional layer 2 and the edge of the cover plate 15, which can not only prevent light leakage at the edge, but also improve the integrated black display effect and reduce the visual difference of the bezel.

[0121] For example, the functional layer 2 includes a first sub-layer 7, and a first encapsulation portion 301 is located between the first sub-layer 7 and the side portion 202 of the middle frame 200.

[0122] In addition, see Figure 28 The display device may also include a support 400, an ultra-clean foam composite layer 500, a prosthetic tape 600, etc. located on the backlight side of the display panel 1, which will not be described in detail here.

[0123] Based on the same concept, embodiments of the present invention also provide a method for manufacturing a display device, combined with Figure 2 and Figure 3 The manufacturing method includes forming a display module 100.

[0124] The process of forming the display module 100 includes: fabricating a display panel 1, which includes a display area 3 and a first non-display area 4 surrounding the display area 3. A functional layer 2 is disposed on the light-emitting side of the display panel 1. The functional layer 2 includes a first portion 5, which overlaps with the first non-display area 4 in the thickness direction of the display panel 1. The first portion 5 is light-shielding and includes a photosensitive material.

[0125] It should be noted that "setting the functional layer 2 on the light-emitting side of the display panel 1" is a positional definition, which only limits the final location of the layer on the light-emitting side of the panel and does not restrict the manufacturing sequence. For example, in the embodiments of the present invention, the functional layer 2 can be directly formed on the light-emitting side of the display panel 1, or the functional layer 2 can be first formed on one side of the cover plate 15, and the functional layer 2 will be located on the light-emitting side of the display panel 1 as the cover plate 15 is attached.

[0126] The above-described manufacturing method utilizes a first portion 5 formed of photosensitive material to replace traditional light-blocking ink in forming the blocking area. The photosensitive material is formed with high precision; for example, it can be formed at a specific location using a printing process with high precision, reaching the tens of micrometers level. Furthermore, the precision of the photosensitive position during light irradiation is also very high, similarly reaching the tens of micrometers level. Therefore, the first portion 5 formed using the photosensitive material can have very high positional accuracy, with minimal positional shift in the blocking area. This significantly reduces the impact of the blocking area's positional shift on the distance between the display area 3 on different sides (e.g., opposite sides) and the blocking area.

[0127] Moreover, the positional offset of the obscuring area is reduced, and the safety distance reserved between the obscuring area and the display area 3 can be reduced. With a fixed distance between the display area 3 and the edge of the cover plate 15, the width ratio of the obscuring area is increased, which can also weaken the visual perception of the distance difference between the display area 3 and the obscuring area on different sides and reduce the visual difference between the size sides.

[0128] Furthermore, reducing the positional offset of the shielding area will also help reduce the attachment misalignment between the cover plate 15 and the display panel 1, or eliminate the impact of the attachment misalignment on the uneven distance between different sides. For example, the functional layer 2 can be formed on the cover plate side. Before the cover plate 15 is attached to the display panel 1, the photosensitive material can be light-treated to form all or part of the first part 5. Because the positional accuracy of the formed light-shielding part is high, it can be used for positioning when the cover plate 15 is attached to the display panel 1, thereby improving the alignment accuracy between the cover plate 15 and the display panel 1, effectively reducing the attachment misalignment between the cover plate 15 and the display panel 1, and thus significantly reducing the impact of the attachment misalignment on the distance between the display area 3 and the shielding area on different sides. Alternatively, the functional layer 2 can be formed on the panel side. Since the first part 5 in the functional layer 2 can replace the traditional light-shielding ink to form the shielding area, the light-shielding ink can be eliminated on the cover side. The attachment offset between the cover 15 and the display panel 1 will not affect the distance between the display area 3 and the shielding area on different sides, thus eliminating the effect of attachment offset on the uneven distance on different sides.

[0129] In summary, the above manufacturing method can effectively improve the problem of uneven distance between the display area 3 and the obstruction area on different sides of the display device, thereby weakening the defects of large and small sides and improving product performance.

[0130] In some implementations, combined Figure 7 The functional layer 2 includes a first sublayer 7, which includes a light-transmitting substrate 8. In the thickness direction of the display panel 1, the light-transmitting substrate 8 overlaps with the display area 3 and the first non-display area 4. The light-transmitting substrate 8 includes a first substrate portion 9. The first portion 5 in the first sublayer 7 includes the first substrate portion 9 and photosensitive particles 10 filled in the first substrate portion 9.

[0131] See Figure 8 The formation process of the first sublayer 7 includes: S1: A light-transmitting substrate 8 is provided on the light-emitting side of the display panel 1.

[0132] S2: At at least a portion of the location overlapping with the first non-display area 4, a solution containing photosensitive particles 10 is printed on the light-transmitting substrate 8, and the solution is allowed to penetrate the light-transmitting substrate 8, for example, by applying pressure. The photosensitive particles 10 include a photosensitive particle body 12 and a color developer layer covering the photosensitive particle body 12.

[0133] S3: At least a portion of the location overlapping with the first non-display area 4, the photosensitive particles 10 are illuminated, causing the color developer layer in the illuminated photosensitive particles 10 to turn black, forming a black outer layer 13.

[0134] Compared to the printing precision of light-blocking ink, the printing precision is very high, reaching the level of 10μm-30μm. Therefore, the positional precision of the photosensitive particle solution is very high, resulting in a high positional precision of the first part 5. The positional offset of the blocking area has little impact on the distance between the display area 3 on different sides and the blocking area, thus effectively improving the problem of large and small edges.

[0135] Moreover, in this structure, the first part 5 in the first sub-layer 7 can replace the traditional light-shielding ink to form a shielding area. Therefore, the light-shielding ink can be eliminated on the cover plate side. The attachment offset between the cover plate 15 and the display panel 1 will not affect the distance between the display area 3 and the shielding area on different sides, thus eliminating the effect of attachment offset on the uneven distance on different sides.

[0136] Furthermore, based on the precision advantage of printing at the tens of micrometer level, the reserved safety distance between the occlusion area and the display area 3 can be greatly reduced, the width ratio of the occlusion area can be greatly increased, the visual perception of the large and small sides can be weakened simultaneously, and the occlusion performance of the occlusion area can be effectively improved.

[0137] In some implementations, combined Figure 10 The light-transmitting substrate 8 includes a first optical adhesive layer 16.

[0138] Figure 29 This is another schematic diagram illustrating the fabrication of the display device provided in an embodiment of the present invention, such as... Figure 29 As shown, the process of setting the first optical adhesive layer 16 on the light-emitting side of the display panel 1 includes: attaching the integrally supplied polarizer 14 and the first optical adhesive layer 16 to the display panel 1. After attachment, the first optical adhesive layer 16 is located on the side of the polarizer 14 away from the display panel 1.

[0139] The optical adhesive layer is a full-coverage film layer with superior optical properties. The light-transmitting substrate 8 and the optical adhesive layer are reused, which allows it to serve the functions of forming a shielding area and bonding the polarizer 14 and the cover plate 15, thereby eliminating the need for an adhesive layer, saving costs and reducing thickness.

[0140] Moreover, in the manufacturing process, the polarizer 14 and the first optical adhesive layer 16 are supplied as a single unit, and this single unit is directly attached to the display panel 1. This can avoid the alignment deviation caused when the first optical adhesive layer 16 and the polarizer 14 are attached, which may affect the positional accuracy of the first part 5.

[0141] In some implementations, combined Figure 10 See you again Figure 29 Before attaching the integrally supplied polarizer 14 and the first optical adhesive layer 16 to the display panel 1, the second optical adhesive layer 17 is first attached to one side of the light-emitting surface of the display panel 1.

[0142] After the polarizer 14 is attached, the polarizer 14 comes into contact with and is bonded to the second optical adhesive layer 17. The polarizer 14 covers the second optical adhesive layer 17, and there is a gap between the edge of the second optical adhesive layer 17 and the edge of the polarizer 14.

[0143] In traditional manufacturing processes, the polarizer 14 and the pressure-sensitive adhesive attached to its lower surface are supplied as a single unit. In this embodiment of the invention, the pressure-sensitive adhesive is eliminated, and a second optical adhesive layer 17 is used to bond the polarizer 14 and the display panel 1. In the manufacturing process, the second optical adhesive layer 17 is first attached to one side of the display panel 1. Then, the integrally supplied polarizer 14 and the first optical adhesive layer 16 are attached above the second optical adhesive layer 17. Subsequently, light-shielding photosensitive particles 10 are formed in the first optical adhesive layer 16 through processes such as printing a photosensitive particle solution, pressure infiltration, and photocuring.

[0144] In the original structure where the polarizer 14 and pressure-sensitive adhesive are integrally supplied, the edges of the pressure-sensitive adhesive and the polarizer 14 are flush. In this embodiment of the invention, the pressure-sensitive adhesive is eliminated, and a separate second optical adhesive layer 17 is pre-attached to one side of the display panel 1. The size of the selected second optical adhesive layer 17 can be more flexible. For example, see... Figure 10 The size of the second optical adhesive layer 17 can be smaller than that of the polarizer 14. The edge of the second optical adhesive layer 17 is recessed relative to the edge of the polarizer 14, so that there is a certain gap between the edge of the second optical adhesive layer 17 and the edge of the polarizer 14, thereby achieving bonding. Figure 28 This gap can be used to fill the subsequent black encapsulating adhesive 300 to prevent light leakage at the edges.

[0145] In some implementations, combined Figure 11 The display module also includes a cover plate 15. The functional layer 2 includes a second sub-layer 18, which is located on the side of the cover plate 15 facing the display panel 1. The first portion 5 of the second sub-layer 18 includes photosensitive ink 19.

[0146] See Figures 12-14 The process of forming the second sub-layer 18 includes: providing a cover plate 15 and coating one side of the cover plate 15 with photosensitive ink 19; attaching the cover plate 15 to the display panel 1 such that the photosensitive ink 19 is located between the cover plate 15 and the display panel 1, and in the thickness direction of the display panel 1, the photosensitive ink 19 overlaps at least with the first non-display area 4; and irradiating the photosensitive ink 19 with light at at least a portion of the location where it overlaps with the first non-display area 4 to make it black.

[0147] Compared to the printing precision of traditional light-blocking inks, the light-sensing positional precision is very high, around 30μm-50μm. Therefore, the positional precision of the first part 5 in the second sub-layer 18 is relatively high. Reducing the positional offset of the blocking area has little impact on the distance deviation between the display areas 3 on both sides and the blocking area, effectively improving the issue of large and small edges. In addition, based on the advantage of the light-sensing positional precision at the tens of micrometer level, the safety distance between the preset position of the blocking area and the display area 3 can be significantly reduced, and the proportion of the width of the blocking area is greatly increased. This not only simultaneously weakens the visual perception of large and small edges but also effectively improves the blocking performance of the blocking area.

[0148] In some implementations, see Figures 12-14 After attaching the cover plate 15 to the display panel 1, the alignment of the cover plate 15 and the display panel 1 is first checked. Then, based on the alignment, the photosensitive ink 19 is irradiated with light at least part of the position where it overlaps with the first non-display area 4 to make it turn black.

[0149] After the cover plate 15 is attached to the display panel 1, the position of the display area 3 can be detected to determine the misalignment between the cover plate 15 and the display panel 1. Then, the photosensitive material can be light-treated according to the misalignment to form all or part of the first part 5, thereby automatically setting the boundary position of the occlusion area and compensating for the impact of the attachment misalignment between the cover plate 15 and the display panel 1 on the distance between the display area 3 and the occlusion area on different sides.

[0150] In some implementations, see Figure 12 and Figure 13 After the photosensitive ink 19 is applied to the cover plate 15 and before the cover plate 15 is attached, the photosensitive ink 19 is first exposed to light in the first sub-area to turn it black. The position of the first sub-area corresponds to the position of the first sub-blocking part 20. After the cover plate 15 is attached, the first sub-area overlaps with the first non-display area 4, and there is a gap between the first sub-area and the display area 3.

[0151] Depending on the alignment, the process of illuminating the photosensitive ink 19 to darken it at least a portion of the first non-display area 4 includes: illuminating the photosensitive ink 19 to darken it at a second sub-area, depending on the alignment. The second sub-area is located on the side of the first sub-area closer to the display area 3, and overlaps with the first non-display area 4 in the thickness direction of the display panel 1. The position of the second sub-area corresponds to the position of the second sub-blocking portion 21.

[0152] The first part 5 in the second sub-layer 18 includes a part located in the first sub-region and a part located in the second sub-region. That is, the first sub-blocking part 20 and the second sub-blocking part 21 together constitute the first part 5 in the second sub-layer 18.

[0153] In this manufacturing process, after applying photosensitive ink 19 to one side of the cover plate 15, the photosensitive ink 19 is first subjected to light treatment, causing part of the photosensitive ink 19 to turn black and form the first sub-masking part 20. Then, the cover plate 15 is aligned and attached to the display panel 1. During the attachment process, the first sub-masking part 20 can be used for positioning. Because the positional accuracy of the first sub-masking part 20 is high, the alignment accuracy between the cover plate 15 and the display panel 1 can be effectively improved and reduced, thus reducing their misalignment. Next, the position of the display area 3 is detected to determine the misalignment between the cover plate 15 and the display panel 1. For example, the position of the display area 3 can be detected by an automatic optical inspection device to determine whether the distance between the display area 3 and the edge of the cover plate 15 and the first sub-masking part 20 is consistent on both sides. This type of device has high detection accuracy, reaching about 50μm, and the detection of the position of the display area 3 will be more accurate. Next, based on the misalignment, the photosensitive ink 19 undergoes another light treatment, causing a portion of the photosensitive ink 19 to darken and form a second sub-masking portion 21. The positions of both the first sub-masking portion 20 and the second sub-masking portion 21 correspond to the first non-display area 4, and the second sub-masking portion 21 is located on the side of the first sub-masking portion 20 closer to the display area 3. The first sub-masking portion 20 and the second sub-masking portion together constitute the first part 5. The second light treatment can set the boundary of the masking area based on the misalignment between the cover plate 15 and the display panel 1 to compensate for the uneven distance between the display area 3 and the masking area on different sides due to the attachment misalignment between the cover plate 15 and the display panel 1. After the second light treatment, the distance between the display area 3 and the masking area on different sides, for example, on opposite sides, can be made more consistent, thereby effectively improving the issue of large and small edges. Moreover, in this structure, because the light sensing position accuracy is high, the safety distance reserved between the boundary of the occluded area and the display area 3 can be smaller when the second light is applied. The width ratio of the occluded area is increased, and the visual perception of the large and small sides can be weakened at the same time.

[0154] In some implementations, combined Figure 24 The display panel 1 also includes a hole area 36 and a second non-display area 37 surrounding the hole area 36, ​​with the display area 3 surrounding the second non-display area 37.

[0155] See Figures 25-27 The manufacturing method of the display module 100 also includes attaching the cover plate 15.

[0156] Before bonding the cover plate 15, the manufacturing method of the display module 100 further includes: irradiating the photosensitive material at the third sub-area to make it black, so that the formed functional layer 2 also includes a third part 38, the third part 38 corresponds to the third sub-area, and in the thickness direction of the display panel 1, the third part 38 overlaps with the second non-display area 37, the third part 38 blocks light and includes the photosensitive material.

[0157] When the display panel 1 also includes a hole area 36, ​​a photosensitive material is used to replace the light-shielding ink to form a shielding area around the hole area 36. This can improve the positional accuracy of the shielding area and effectively reduce the misalignment between the hole area 36 and the shielding area. The distance between the hole area 36 and the shielding area can be kept consistent around the perimeter.

[0158] Moreover, in the above manufacturing method, the third part 38 is formed before the cover plate 15 is attached to the display panel 1. Then, during the attachment process of the cover plate 15 and the display panel 1, the third part 38 is used for positioning to further improve the alignment accuracy of the cover plate 15 and the display panel 1 and reduce the impact of their misalignment on the large and small sides.

[0159] For example, such as Figure 25 and Figure 26 As shown, when a light treatment is performed before the cover plate 15 is attached to the display panel 1 and after the cover plate 15 is attached to the display panel 1, and the two light treatments together form the first part 5, the third part 38 can be formed simultaneously with the formation of the first sub-shielding part 20. Therefore, during the attachment process of the cover plate 15 to the display panel 1, the first sub-shielding part 20 and the third part 38 can be used for positioning simultaneously, further reducing the attachment misalignment between the cover plate 15 and the display panel 1. Or, as... Figure 27 As shown, when the first part 5 is formed by only one light treatment process after the cover plate 15 is attached to the display panel 1, the photosensitive ink 19 can be light treated once before the cover plate 15 is attached to the display panel 1 to form the third part 38. Then, during the attachment process of the cover plate 15 to the display panel 1, the edge of the cover plate 15 and the third part 38 can be used for positioning at the same time. Since the positional accuracy of the third part 38 is high, the attachment misalignment between the cover plate 15 and the display panel 1 can be effectively reduced.

[0160] In some embodiments, the display panel 1 includes a light-emitting element.

[0161] See Figure 8 In the fabrication of functional layer 2, the process of illuminating the photosensitive material to make it black includes: controlling the light-emitting element to emit light, so that the photosensitive material turns black under the action of the light emitted by the light-emitting element.

[0162] In one manufacturing method, the photosensitive material is confined to the location of the first part 5, thus eliminating restrictions on the illumination area. Even if the entire area is illuminated, the photosensitive material will not obstruct the display area 3. Therefore, a photosensitive material with a color-changing response band in the visible light band can be selected. Then, by tapping the display panel 1, the photosensitive material is illuminated using light emitted from the panel. When the display panel 1 is tapped, the light emitted by the light-emitting elements in the display panel 1 obliquely enters the photosensitive material, photoexciting it and causing it to darken. This not only eliminates the need for an external light source but also allows the photoexcitation process of the photosensitive material to be synchronized with the tapping test process, saving time and effort.

[0163] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

[0164] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A display device, characterized in that, The display module includes a display panel and a functional layer located on the light-emitting side of the display panel. The display panel includes a display area and a first non-display area surrounding the display area; The functional layer includes a first portion that overlaps with the first non-display area in the thickness direction of the display panel. The first portion is light-shielding and includes a photosensitive material.

2. The display device according to claim 1, characterized in that, The functional layer further includes a second part, which overlaps with the display area in the thickness direction of the display panel, wherein the first part and the second part are connected, and the first part is light-transmitting.

3. The display device according to claim 2, characterized in that, The second part is a ring structure, or, in the thickness direction of the display panel, the second part covers the display area.

4. The display device according to claim 1, characterized in that, The functional layer includes a first sub-layer, which includes a light-transmitting substrate. In the thickness direction of the display panel, the light-transmitting substrate overlaps with the display area and the first non-display area. The light-transmitting substrate includes a first substrate portion, and the first portion of the first sublayer includes the first substrate portion and photosensitive particles filled in the first substrate portion.

5. The display device according to claim 4, characterized in that, The photosensitive particle includes a photosensitive particle body and a black outer layer covering the photosensitive particle body.

6. The display device according to claim 4, characterized in that, The edge of the first part closest to the display area is a non-linear edge.

7. The display device according to claim 4, characterized in that, The maximum distance between the edge of the first part closest to the display area and the display area is less than or equal to 30 μm.

8. The display device according to claim 4, characterized in that, The display module also includes a polarizer and a cover plate, the cover plate being located on the side of the polarizer away from the display panel; The light-transmitting substrate includes a first optical adhesive layer, which is located between the polarizer and the cover plate.

9. The display device according to claim 8, characterized in that, The display module further includes a second optical adhesive layer, which is located between the display panel and the polarizer and is in contact with and bonded to the polarizer. The polarizer covers the second optical adhesive layer, and there is a gap between the edge of the second optical adhesive layer and the edge of the polarizer.

10. The display device according to claim 1, characterized in that, The display module also includes a cover plate; The functional layer includes a second sub-layer located on the side of the cover plate facing the display panel, and the first portion of the second sub-layer includes photosensitive ink.

11. The display device according to claim 10, characterized in that, The second sub-layer further includes a second portion, which overlaps with the display area in the thickness direction of the display panel, and the first portion and the second portion in the second sub-layer are connected. The second portion of the second sub-layer is light-transmitting and includes the photosensitive ink.

12. The display device according to claim 10, characterized in that, The display module includes at least two second sub-layers, which are stacked in a direction perpendicular to the plane of the cover plate.

13. The display device according to claim 1, characterized in that, The first non-display area includes a first sub-non-display area, a corner sub-non-display area, and a second sub-non-display area; The first non-display area includes a first region, a first bent region, and a second region. The first region is located on one side of the display area in a first direction and between the display area and the first bent region. The first bent region is located between the first region and the second region. The second region is located on the backlight side of the display panel. At least a portion of the second sub-non-display area is located on one side of the display area in a second direction, which intersects with the first direction; at least one second sub-non-display area includes a third area, a second bent area, and a fourth area, wherein the third area is located between the display area and the second bent area, the second bent area is located between the third area and the fourth area, and the fourth area is located on the backlight side of the display panel; The corner sub-non-display area connects the first sub-non-display area and the second sub-non-display area.

14. The display device according to claim 1, characterized in that, The photosensitive material includes an irreversible photochromic photosensitive material, and / or, the color-changing response band of the photosensitive material is located in the ultraviolet light band, and / or, the light threshold of the photosensitive material is greater than or equal to 100 mJ / cm².

15. The display device according to claim 1, characterized in that, The first part includes a first sub-part and a second sub-part, which are located on opposite sides of the display area; The distance between the first sub-part and the display area is d1, and the distance between the second sub-part and the display area is d2, wherein d1=d2, and / or 30μm≤d1≤50μm, 30μm≤d2≤50μm.

16. The display device according to claim 1, characterized in that, The first part includes a first sub-part and a second sub-part, which are located on opposite sides of the display area, and the widths of the first sub-part and the second sub-part are not equal.

17. The display device according to claim 1, characterized in that, The display panel includes a first side, and in the thickness direction of the display panel, a first portion overlaps with the first side, and the side of the first portion away from the display area is spaced apart from the first side.

18. The display device according to claim 1, characterized in that, The display panel further includes a hole area and a second non-display area surrounding the hole area, the display area surrounding the second non-display area; The functional layer further includes a third part, which overlaps with the second non-display area in the thickness direction of the display panel. The third part is light-shielding and includes the photosensitive material.

19. The display device according to claim 1, characterized in that, The display device further includes a mid-frame and black encapsulating adhesive, the mid-frame including a connected bottom and side portions, and at least a portion of the black encapsulating adhesive filling the space between the display module and the side portions of the mid-frame; The black encapsulating adhesive includes a first encapsulation portion, which is located between the functional layer and the side portion of the middle frame.

20. A method for manufacturing a display device, characterized in that, This includes forming a display module, the process of forming the display module including: A display panel is manufactured, the display panel including a display area and a first non-display area surrounding the display area; A functional layer is provided on the light-emitting side of the display panel. The functional layer includes a first part, which overlaps with the first non-display area in the thickness direction of the display panel. The first part is light-shielding and includes a photosensitive material.

21. The method for manufacturing a display device according to claim 20, characterized in that, The functional layer includes a first sub-layer, the first sub-layer including a light-transmitting substrate, and in the thickness direction of the display panel, the light-transmitting substrate overlaps with the display area and the first non-display area, wherein the light-transmitting substrate includes a first substrate portion, and the first portion of the first sub-layer includes the first substrate portion and photosensitive particles filled in the first substrate portion. The formation process of the first sublayer includes: A light-transmitting substrate is provided on the light-emitting side of the display panel; At least a portion of the location overlapping with the first non-display area, a solution containing photosensitive particles is printed on the light-transmitting substrate, and the solution is allowed to penetrate the light-transmitting substrate, wherein the photosensitive particles include a photosensitive particle body and a color developer layer covering the photosensitive particle body. At least a portion of the location overlapping with the first non-display area, the photosensitive particles are illuminated, causing the color developer layer in the illuminated photosensitive particles to turn black, forming a black outer layer.

22. The method for manufacturing a display device according to claim 21, characterized in that, The light-transmitting substrate includes a first optical adhesive layer; The process of setting the first optical adhesive layer on the light-emitting side of the display panel includes: attaching the integrally supplied polarizer and the first optical adhesive layer to the display panel. After attachment, the first optical adhesive layer is located on the side of the polarizer away from the display panel.

23. The method for manufacturing a display device according to claim 22, characterized in that, Before attaching the polarizer and the first optical adhesive layer, which are integrally supplied, to the display panel, a second optical adhesive layer is first attached to one side of the light-emitting surface of the display panel. After the polarizer is attached, the polarizer comes into contact with and adheres to the second optical adhesive layer, the polarizer covers the second optical adhesive layer, and there is a gap between the edge of the second optical adhesive layer and the edge of the polarizer.

24. The method for manufacturing a display device according to claim 20, characterized in that, The display module further includes a cover plate, and the functional layer includes a second sub-layer located on the side of the cover plate facing the display panel. The first portion of the second sub-layer includes photosensitive ink. The formation process of the second sublayer includes: A cover plate is provided, and a photosensitive ink is coated on one side of the cover plate; The cover plate is attached to the display panel, such that the photosensitive ink is located between the cover plate and the display panel, and the photosensitive ink overlaps with the first non-display area at least in the thickness direction of the display panel; At least a portion of the location overlapping the first non-display area, the photosensitive ink is exposed to light to turn it black.

25. The method for manufacturing a display device according to claim 24, characterized in that, After attaching the cover plate to the display panel, the alignment of the cover plate and the display panel is first checked. Then, based on the alignment, the photosensitive ink is exposed to light at at least a portion of the location overlapping with the first non-display area to turn it black.

26. The method for manufacturing a display device according to claim 25, characterized in that, After the photosensitive ink is applied to the cover plate and before the cover plate is attached, the photosensitive ink is first exposed to light in the first sub-area to turn it black; after the cover plate is attached, the first sub-area overlaps with the first non-display area, and there is a gap between the first sub-area and the display area. Depending on the alignment, the process of illuminating the photosensitive ink to darken it at at least a portion of the first non-display area includes: illuminating the photosensitive ink to darken it at a second sub-area, depending on the alignment, wherein the second sub-area is located on the side of the first sub-area closer to the display area, and the second sub-area overlaps with the first non-display area in the thickness direction of the display panel, and the first portion of the second sub-layer includes the portion located in the first sub-area and the portion located in the second sub-area.

27. The method for manufacturing a display device according to claim 20, characterized in that, The display panel further includes a hole area and a second non-display area surrounding the hole area, the display area surrounding the second non-display area; The method for manufacturing the display module also includes attaching a cover plate; Before attaching the cover plate, the method for manufacturing the display module further includes: irradiating the photosensitive material at the third sub-area to make it black, so that the formed functional layer further includes a third part, the third part corresponding to the third sub-area, the third part overlapping the second non-display area in the thickness direction of the display panel, the third part blocking light and including the photosensitive material.

28. The method for manufacturing a display device according to claim 20, characterized in that, The display panel includes light-emitting elements; During the fabrication of the functional layer, the process of illuminating the photosensitive material to make it black includes: controlling the light-emitting element to emit light, so that the photosensitive material turns black under the action of the light emitted by the light-emitting element.

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