Display panel, manufacturing method thereof and display device

Abstract

The invention provides a display panel, a manufacturing method thereof and a display device, relates to the technical field of display, and is used for optimizing the stability of peep-proof performance. The display panel comprises a substrate, a display layer and a peep-proof layer located on the side, away from the substrate, of the display layer. Wherein the peep-proof layer comprises a supporting layer, a peep-proof layer, a peep-proof layer and a peep-proof layer, the flexible cover plate layer is located on the side, away from the substrate, of the supporting layer; the first film layer is located on the side, away from the substrate, of the flexible cover plate layer and at least covers the peep-proof groove.

Description

Technical Field

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

[0002] The anti-peeping display technology is a special display technology that restricts the viewing angle of the screen to prevent others from peeping at the screen content from the side. Electronic products adopting the anti-peeping display technology can make the screen content clearly visible only within a limited viewing angle directly facing the screen, while presenting a blurred, darkened, or completely invisible effect at other viewing angles.

[0003] However, the structure of the current display panel with anti-peeping function still needs to be further optimized. Summary of the Invention

[0004] Embodiments of the present invention provide a display panel, a manufacturing method thereof, and a display device, which are used to optimize the stability of the anti-peeping performance.

[0005] In a first aspect, embodiments of the present invention provide a display panel, including a substrate, a display layer, and an anti-peeping layer located on a side of the display layer away from the substrate; wherein, the anti-peeping layer includes: A support layer having anti-peeping grooves, and electrophoresis liquid is included in the anti-peeping grooves; A flexible cover layer located on a side of the support layer away from the substrate; A first film layer located on a side of the flexible cover layer away from the substrate and at least covering the anti-peeping grooves.

[0006] In a second aspect, based on the same inventive concept, embodiments of the present invention further provide a manufacturing method of a display panel for forming the above display panel, including: Forming a first structure, the first structure includes at least one panel area, and one panel area corresponds to one display panel; the panel area includes a substrate, a display layer, and a support layer, the support layer is located on a side of the display layer away from the substrate, the support layer has anti-peeping grooves, and electrophoresis liquid is included in the anti-peeping grooves; Placing a rigid substrate carrying a flexible cover layer on one side of the first structure, such that the flexible cover layer is located between the rigid substrate and the first structure; Peeling off the rigid substrate; Forming a first film layer on a side of the flexible cover layer away from the substrate, and the first film layer at least covers the anti-peeping grooves.

[0007] In a third aspect, based on the same inventive concept, embodiments of the present invention further provide a display device including the above display panel.

[0008] The technical solutions provided by the embodiments of the present invention have the following beneficial effects: By adopting the technical solution provided by the embodiment of the present invention, after peeling off the rigid substrate, a first film layer can be further formed above the flexible cover layer. Even if the flexible cover layer is damaged and has a notch during the process of peeling off the rigid substrate and the notch is located above the anti-peeping groove, this part of the notch will be covered by the first film layer, thereby effectively preventing the electrophoresis liquid from being exposed and volatilized, and further effectively avoiding the problem of anti-peeping failure of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those skilled in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0010] Figure 1 FIG. 10 is a schematic structural diagram of a display panel provided by an embodiment of the present invention; Figure 2 FIG. 13 is a schematic diagram of a display panel provided by an embodiment of the present invention in an anti-peeping mode; Figure 3 FIG. 16 is another schematic diagram of a display panel provided by an embodiment of the present invention in an anti-peeping mode; Figure 4 FIG. 19 is a schematic diagram of a display panel provided by an embodiment of the present invention in a non-anti-peeping mode; Figure 5 FIG. 22 is a process flow diagram of a display panel provided by an embodiment of the present invention; Figure 6 FIG. 25 is another schematic structural diagram of a display panel provided by an embodiment of the present invention; Figure 7 FIG. 28 is another schematic structural diagram of a display panel provided by an embodiment of the present invention; Figure 8 FIG. 31 is another process flow diagram of a display panel provided by an embodiment of the present invention; Figure 9 FIG. 34 is another schematic structural diagram of a display panel provided by an embodiment of the present invention; Figure 10 FIG. 37 is another schematic structural diagram of a display panel provided by an embodiment of the present invention; Figure 11 FIG. 40 is another schematic structural diagram of a display panel provided by an embodiment of the present invention; Figure 12 FIG. 43 is another schematic structural diagram of a display panel provided by an embodiment of the present invention; Figure 13Another structural schematic diagram of the display panel provided by the embodiment of the present invention; Figure 14 Another structural schematic diagram of the display panel provided by the embodiment of the present invention; Figure 15 Another process schematic diagram of the display panel provided by the embodiment of the present invention; Figure 16 Another structural schematic diagram of the display panel provided by the embodiment of the present invention; Figure 17 Another process schematic diagram of the display panel provided by the embodiment of the present invention; Figure 18 Another structural schematic diagram of the display panel provided by the embodiment of the present invention; Figure 19 Another structural schematic diagram of the display panel provided by the embodiment of the present invention; Figure 20 A structural schematic diagram of the display device provided by the embodiment of the present invention. Detailed implementation manners

[0011] For a better understanding of 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.

[0012] It should be clear that the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the scope of protection of the present invention.

[0013] The terms used in the embodiments of the present invention are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. The singular forms of "a", "the" and "said" used in the embodiments of the present invention and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise.

[0014] It should be understood that the term " / and" used herein is only a description of the associated relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " herein generally represents an "or" relationship between the associated objects before and after.

[0015] The embodiment of the present invention provides a display panel, as Figure 1 shown, Figure 1 A structural schematic diagram of the display panel provided by the embodiment of the present invention. The display panel includes a substrate 1, a display layer 2 and a privacy layer 3.

[0016] Among them, the substrate 1 is a flexible substrate, which may include materials such as yellow polyimide (YPI).

[0017] The display layer 2 is located on one side of the substrate 1, and specifically may include a circuit device layer 4, a light-emitting device layer 5, and a packaging layer 6 stacked in a direction away from the substrate 1. Among them, the circuit device layer 4 includes a plurality of pixel circuits 7, and the light-emitting device layer 5 includes a plurality of light-emitting devices 8.

[0018] The anti-peeking layer 3 is located on the side of the display layer 2 away from the substrate 1.

[0019] The anti-peeking layer 3 includes a support layer 9, the support layer 9 has anti-peeking grooves 10, the anti-peeking grooves 10 include electrophoresis liquid 11, electrophoresis particles 12 are distributed in the electrophoresis liquid 11, and the electrophoresis particles 12 may be dark light-absorbing particles such as black, for example, including graphite carbon particles.

[0020] In a more specific structure, the light-emitting device layer 5 includes a plurality of light-emitting units 13, and each light-emitting unit 13 includes at least one light-emitting device 8. The support layer 9 includes a plurality of support structures 14, one support structure 14 corresponds to one light-emitting unit 13, the support structure 14 is located on the side of its corresponding light-emitting unit 13 away from the substrate 1, and anti-peeking grooves 10 are spaced between adjacent support structures 14, and the anti-peeking grooves 10 are in a mesh structure. In the anti-peeking mode, the electrophoresis liquid 11 in the anti-peeking grooves 10 is used to block the large-angle light emitted by adjacent light-emitting units 13 so that it cannot be emitted.

[0021] In the embodiment of the present invention, referring to Figure 1 , the light-emitting unit 13 may include three light-emitting devices 8, and these three light-emitting devices 8 are respectively used to emit red light, green light, and blue light. Alternatively, the light-emitting unit 13 may also include one light-emitting device 8.

[0022] To achieve the anti-peeking function, the anti-peeking layer 3 may further include electrodes. By applying a voltage to the electrodes, the electric field distribution in the anti-peeking grooves 10 is changed, and then the distribution of the electrophoresis particles 12 in the electrophoresis liquid 11 is changed to regulate the light-emitting angle of the display panel. For example, in one structure, the anti-peeking layer 3 includes a first electrode 15 and a second electrode 16, and the first electrode 15 and the second electrode 16 are respectively located on opposite sides of the electrophoresis liquid 11. In the anti-peeking mode, as Figure 2 and Figure 3 shown, Figure 2 is a schematic diagram of the display panel provided by the embodiment of the present invention in the anti-peeking mode, Figure 3 is another schematic diagram of the display panel provided by the embodiment of the present invention in the anti-peeking mode. By controlling the distribution of the electrophoresis particles 12 throughout the anti-peeking grooves 10, the large-angle light emitted by the light-emitting unit 13 will be absorbed by the electrophoresis particles 12 and cannot be emitted, and only the light at a small angle can be normally emitted. In the non-anti-peeking mode, as Figure 4 shown,Figure 4 This is a schematic diagram of the display panel provided by the embodiment of the present invention in the non-anti-peeking mode. The electrophoretic particles 12 are controlled to be distributed only at the bottom of the anti-peeking groove 10. The large-angle light emitted by the light-emitting unit 13 does not pass through the electrophoretic particles 12, and both small-angle and large-angle light can be normally emitted.

[0023] The anti-peeking layer 3 further includes a flexible cover layer 18, and the flexible cover layer 18 is located on the side of the support layer 9 away from the substrate 1, and may specifically include materials such as transparent polyimide (CPI).

[0024] The inventors have found that as Figure 5 shown, Figure 5 This is a process flow chart of the display panel provided by the embodiment of the present invention. The flexible cover layer 18 is generally pre-fabricated on a rigid substrate 19. When the flexible cover layer 18 needs to be transferred to the panel structure, the flexible cover layer 18 and the rigid substrate 19 are transferred together, and then the rigid cover plate is peeled off by laser lift-off.

[0025] During the process of laser lift-off of the rigid substrate 19, the laser irradiates the rigid substrate 19, and the flexible cover layer 18 absorbs the laser energy, forming stress at the interface between the flexible cover layer 18 and the rigid substrate 19, and then the rigid substrate 19 and the flexible cover layer 18 can be peeled off subsequently. However, during the laser lift-off process, if impurities 20 such as dust adhere to the rigid substrate 19, the impurities 20 will affect the absorption of laser energy by the flexible cover layer 18 at this position, resulting in less stress generated at this position. Then, when the rigid substrate 19 is peeled off subsequently, mechanical damage is likely to occur to the flexible cover layer 18 at this position, forming a notch 21. Among them, the position of the notch 21 is related to the attachment position of the impurities 20, and the size of the notch 21 is related to the size of the attached impurities 20.

[0026] If a notch 21 is generated above the anti-peeking groove 10, it will cause the electrophoresis liquid 11 in the anti-peeking groove 10 to be exposed and volatilize. For example, after the panel manufacturing process is completed, other module manufacturing processes such as attaching other components, chip bonding, or printed circuit board assembly will be carried out subsequently. If a notch 21 is generated above the anti-peeking groove 10, it will cause the electrophoresis liquid 11 to be continuously exposed through the notch 21, thereby causing the electrophoresis liquid 11 to volatilize, affecting the realization of the anti-peeking function, and in severe cases, even causing the anti-peeking function to fail.

[0027] To avoid this problem, the inventors tried to use the method of increasing the laser energy for compensation, but it was also found that too large laser energy would cause serious ashing on the surface of the flexible cover layer 18, and then have an adverse effect on the normal light emission of the display panel.

[0028] In response to this, the present invention further proposes that as Figure 6 and Figure 7As shown Figure 6 FIG. Figure 6 is another schematic structural diagram of the display panel provided by the embodiment of the present invention Figure 7 FIG. Figure 7 is yet another schematic structural diagram of the display panel provided by the embodiment of the present invention. The anti-peeping layer 3 further includes a first film layer 22. The first film layer 22 is located on the side of the flexible cover layer 18 away from the substrate 1 and can be in contact with the flexible cover layer 18. The first film layer 22 at least covers the anti-peeping groove 10

[0029] Wherein, "the first film layer 22 at least covers the anti-peeping groove 10" means that the first film layer 22 is at least placed above the anti-peeping groove 10. In another way of expression, it can also be said that in the unfolded state of the display panel, the orthographic projection of the first film layer 22 on the plane where the substrate 1 is located covers the orthographic projection of the anti-peeping groove 10 on the plane where the substrate 1 is located

[0030] Based on this structure, as Figure 8 shown Figure 8 FIG. Figure 8 is another process flow chart of the display panel provided by the embodiment of the present invention. After peeling off the rigid substrate 19, a first film layer 22 that at least covers the anti-peeping groove 10 can be further formed above the flexible cover layer 18. In this way, even if the flexible cover layer 18 is damaged and a notch 21 appears above the anti-peeping groove 10 when peeling off the rigid substrate 19, this part of the notch 21 will be covered by the first film layer 22, thereby effectively preventing the electrophoresis liquid 11 from being exposed and volatilized, and avoiding the problem of anti-peeping failure

[0031] In the embodiment of the present invention, the first film layer 22 is a light-transmitting film layer that does not actively regulate the light path. When light passes through the first film layer 22, it exits naturally without changes in polarization state, phase, etc. Moreover, the formation process of the first film layer 22 belongs to the panel manufacturing process. That is, the first film layer 22 will be immediately formed after peeling off the rigid substrate 19. After the panel manufacturing process, it will enter the subsequent module manufacturing processes such as component attachment, chip bonding, and printed circuit board assembly in other production lines

[0032] In a feasible implementation manner, referring again to Figure 7 , the flexible cover layer 18 has a notch 21. The notch 21 penetrates at least part of the thickness of the flexible cover layer 18. For example, the notch 21 can penetrate the flexible cover layer 18 to form an opening in the flexible cover layer 18. The first film layer 22 covers at least part of the notch 21

[0033] That is, this structure is the case where the flexible cover layer 18 has a notch 21. "The first film layer 22 covers at least part of the notch 21" means that the first film layer 22 is placed above at least part of the notch 21. In another way of expression, it can also be said that in the unfolded state of the display panel, the orthographic projection of the first film layer 22 on the plane where the substrate 1 is located covers at least part of the orthographic projection of the notch 21 on the plane where the substrate 1 is located

[0034] It should be noted that since the first film layer 22 covers the anti-peeping groove 10, when some of the notches 21 are located above the anti-peeping groove 10, the first film layer 22 will at least cover this part of the notches 21, thereby preventing the electrophoresis liquid 11 from being exposed and volatilized.

[0035] Furthermore, referring again to Figure 7 , the notch 21 includes a first notch 23, the first notch 23 corresponds to the position where the anti-peeping groove 10 is located, and the first film layer 22 covers the first notch 23, thereby using the first film layer 22 to prevent the electrophoresis liquid 11 in the anti-peeping groove 10 from being exposed and volatilized in the first notch 23.

[0036] Among them, "the first notch 23 corresponds to the position where the anti-peeping groove 10 is located" means that the first notch 23 is located above the anti-peeping groove 10. In another two expressions, it can also be said that in the unfolded state of the display panel, in the direction perpendicular to the plane where the substrate 1 is located, the first notch 23 overlaps with the anti-peeping groove 10, or it can also be said that the display panel includes a first area and a second area, the first notch 23 and the anti-peeping groove 10 are located in the first area, and the light-emitting unit 13 is located in the second area.

[0037] In a feasible implementation manner, as Figure 9 shown, Figure 9 is another structural schematic diagram of the display panel provided by the embodiment of the present invention. The thickness of the first film layer 22 at the notch position is greater than the thickness at the non-notch position.

[0038] When the first film layer 22 is formed by coating, when the material of the first film layer 22 is coated on one side of the flexible cover layer 18, the material will fill in the notch 21 during the flow, and then after curing the material to form the first film layer 22, the thickness of the first film layer 22 at the notch position will be greater.

[0039] And / or, as Figure 10 shown, Figure 10 is another structural schematic diagram of the display panel provided by the embodiment of the present invention. The first film layer 22 includes an upper surface far from the substrate 1, and the upper surface is recessed toward the substrate 1 at the notch position.

[0040] When the first film layer 22 is formed by attaching, after attaching the first film layer 22 on one side of the flexible cover layer 18, the first film layer 22 will be recessed downward in the notch 21, thereby causing the upper surface of the first film layer 22 to be recessed toward the substrate 1 at this position.

[0041] In a feasible implementation manner, the first film layer 22 is an optically transparent coating, that is, an OC layer.

[0042] When the first film layer 22 is an optically transparent coating, after peeling off the rigid substrate 19, an optically transparent material is first coated on one side of the flexible cover plate layer 18, and then cured to form an optically transparent coating. Such an optically transparent coating is not sticky and will not adhere to the electrophoretic particles 12 in the electrophoretic liquid 11, and thus will not affect the distribution of the electrophoretic particles 12 in different modes. Moreover, such an optically transparent coating is a single-layer structure and has high light transmittance, and will not affect the normal light emission of the display panel.

[0043] It should be noted that this OC layer is different from the OCA layer, and this OC layer is not sticky. After the display panel manufacturing process is completed, if other components need to be attached to the surface of the display panel, an OCA layer needs to be attached on the OC layer, and then the components are attached on the OCA layer, and the OCA layer is used to realize the adhesion between the components and the display panel. That is, when other components are attached above the display panel with such a structure, at least an OC layer and an OCA layer are spaced between the other components and the flexible cover plate layer 18 of the display panel.

[0044] In a feasible implementation manner, the first film layer 22 is an optical adhesive, that is, an OCA layer.

[0045] In this structure, the first film layer 22 is a sticky OCA layer. At this time, the first film layer 22 can be used to prevent the evaporation of the electrophoretic liquid 11, and can also be used to attach other components above the display panel in the subsequent module manufacturing process. Moreover, the OCA layer is also a single-layer structure and has high light transmittance, and will not affect the normal light emission of the display panel.

[0046] It should be noted that in the related art, when the display panel needs to be attached to other components in the subsequent module manufacturing process, the provided display panel does not have an OCA layer above the cover plate, and the OCA layer will be formed on one side of the display panel when attaching other components. However, in the above embodiment, the OCA layer belongs to the display panel. When the display panel needs to be attached to other components in the subsequent module manufacturing process, the provided display panel already includes an OCA layer on its outermost side, and the other components can be directly attached to the display panel.

[0047] In a manufacturing process, after peeling off the rigid substrate 19, first tear off the first release film on one side of the first surface of the OCA layer, and bond the first surface to the flexible cover plate layer 18. The second release film on the second surface side of the OCA layer can be retained first and taken out when attaching other components later, so as to prevent the second surface of the optical adhesive from being exposed for too long and adhering to dust, etc.

[0048] In a feasible implementation manner, as Figure 11 shown, Figure 11Another structural schematic diagram of the display panel provided by the embodiment of the present invention. The first film layer 22 includes an adhesive layer 24 and a protective layer 25, and the adhesive layer 24 is located between the protective layer 25 and the flexible cover layer 18.

[0049] In this embodiment, the first film layer 22 is a protective film directly attached to the flexible cover layer 18. The process of the first film layer 22 is simple, and it can also protect the panel structure.

[0050] In a feasible embodiment, the material of the first film layer 22 is the same as that of the flexible cover layer 18. For example, both the first film layer 22 and the flexible cover layer 18 include CPI material.

[0051] In other words, as Figure 12 shown, Figure 12 Another structural schematic diagram of the display panel provided by the embodiment of the present invention. The aforementioned flexible cover layer 18 is the first flexible cover layer 26, and a second flexible cover layer 27 is further included on the side of the first flexible cover layer 26 away from the substrate 1. The second flexible cover layer 27 is the first film layer 22.

[0052] The formation method of the second flexible cover layer 27 is the same as that of the first flexible cover layer 26. It is also transferred together with a rigid substrate and then the rigid substrate is peeled off. However, as analyzed above, the position of the notch on the flexible cover layer is related to the attachment position of impurities, so the notch position is random. Therefore, when the display panel includes the second flexible cover layer 27, even if the second flexible cover layer 27 also has a notch due to impurity attachment, the position of the notch on the second flexible cover layer 27 hardly coincides with the position of the notch on the first flexible cover layer 26. Furthermore, the notch on the first flexible cover layer 26 can be covered by the second flexible cover layer 27.

[0053] In a feasible embodiment, the thickness of the first film layer 22 is d, 0.5μm ≤ d ≤ 10μm, and / or the transmittance of the first film layer 22 is greater than or equal to 90%. At this time, the light transmittance of the first film layer 22 is relatively good and will not affect the normal light emission of the display panel.

[0054] In a feasible embodiment, as Figure 13 shown, Figure 13 Another structural schematic diagram of the display panel provided by the embodiment of the present invention. The display panel includes a display area AA and a non-display area NA surrounding the display area AA. The first film layer 22 at least covers the display area AA.

[0055] The first film layer 22 in this structure covers the entire surface. Whether the first film layer 22 is formed by coating or attachment, the process will be relatively simple. Moreover, regardless of how random the positions of the notches are, the first film layer 22 can cover all the notches 21 in the display area AA, thereby achieving a better anti-volatilization effect on the electrophoresis liquid 11.

[0056] Further, as Figure 14 shown, Figure 14 is another schematic structural view of the display panel provided by the embodiment of the present invention. The edge of the first film layer 22 is flush with the edge of the flexible cover plate layer 18.

[0057] In a manufacturing process of the display panel, the display panel can be manufactured by a large-sheet route. As Figure 15 shown, Figure 15 is still another schematic flow view of the display panel provided by the embodiment of the present invention. First, a first structure 28 is formed. The first structure 28 is a large-size structure. For example, its size can be 1.5 m × 2 m. The first structure 28 includes a plurality of panel areas 29, and each panel area 29 corresponds to a display panel. The panel area 29 includes a substrate 1, a display layer 2, and a support layer 9; then, a rigid substrate 19 carrying the flexible cover plate layer 18 is placed on one side of the first structure 28. In this process, the provided rigid substrate 19 and the flexible cover plate layer 18 are also large-size structures corresponding to the size of the first structure 28; then, the rigid substrate 19 is peeled off by a laser lift-off process; then, a first film layer 22 is formed on the side of the flexible cover plate layer 18 away from the substrate 1. The first film layer 22 formed in this process is a large-size structure corresponding to the size of the first structure 28; finally, the first structure 28 is cut to form a plurality of independent display panels.

[0058] In the display panel formed by adopting this large-sheet route, the first film layer 22 does not shrink inward relative to the flexible cover plate layer 18, and the edge of the first film layer 22 is flush with the edge of the flexible cover plate layer 18. The process corresponding to this structure is relatively simple, and there is no need to separately form the first film layer 22 for each display panel one by one.

[0059] Or, as Figure 16 shown, Figure 16 is another schematic structural view of the display panel provided by the embodiment of the present invention. The covering area of the first film layer 22 is smaller than the covering area of the flexible cover plate layer 18, and there is a gap between the edge of the first film layer 22 and the edge of the flexible cover plate layer 18.

[0060] In another manufacturing process of the display panel, the display panel can also be manufactured by a small-particle route. As Figure 17 shown, Figure 17Another process schematic diagram of the display panel provided by the embodiment of the present invention. First, a first structure 28 is formed. The first structure 28 only includes a panel area 29, corresponding to a display panel. The panel area 29 includes a substrate 1, a display layer 2, and a support layer 9. Then, a rigid substrate 19 carrying a flexible cover layer 18 is placed on one side of the first structure 28. In this process, both the provided rigid substrate 19 and the flexible cover layer 18 are also small-sized structures corresponding to the size of a display panel. Then, the rigid substrate 19 is peeled off by a laser lift-off process. Then, a first film layer 22 is formed on the side of the flexible cover layer 18 away from the substrate 1.

[0061] In the display panel formed by adopting this small-particle route, when forming the first film layer 22, if the coating area or attachment area of the first film layer 22 is set to coincide with the flexible cover layer 18, it will not provide a certain margin for the coating accuracy or attachment accuracy. If there is a deviation in the coating position or attachment position, the first film layer 22 will protrude from the flexible cover layer 18 on at least one side. Therefore, in the embodiment of the present invention, the coating area or attachment area of the first film layer 22 can be set smaller to provide a certain margin for the coating accuracy or attachment accuracy. In this way, the formed first film layer 22 is retracted relative to the flexible cover layer 18, and the first film layer 22 does not completely cover the coverage area of the flexible cover layer 18.

[0062] In a feasible implementation manner, as Figure 18 and Figure 19 shown, Figure 18 Another structure schematic diagram of the display panel provided by the embodiment of the present invention, Figure 19 Another structure schematic diagram of the display panel provided by the embodiment of the present invention. The display panel includes a first area 30 and a second area 31. The anti-peeping groove 10 is located in the first area 30, and the light-emitting unit 13 and the support structure 14 are located in the second area 31.

[0063] Among them, referring to Figure 18 , the film thickness of the part of the first film layer 22 located in the second area 31 is less than the film thickness of the part of the first film layer 22 located in the first area 30. In this structure, the light extraction efficiency of the display panel can be improved by thinning the thickness of this part of the first film layer 22 above the light-emitting unit 13.

[0064] Or, referring to Figure 19 , the first film layer 22 has a hollow in the second area 31. In this structure, the first film layer 22 does not cover the light-emitting unit 13, and the light extraction efficiency of the display panel can also be improved. In one implementation manner, the optical transparent material can be coated only in the first area 30 to form the first film layer 22, or the optical transparent material can be coated on the whole surface and then the part in the second area 31 is removed.

[0065] It should be noted that even if there is a notch 21 in the flexible cover layer 18 in the second region 31, this part of the notch 21 does not correspond to the position of the anti-peeping groove 10, so it will not cause the exposure and volatilization of the electrophoresis liquid 11. Even if the first film layer 22 has a hollow in the second region 31, it will not affect the anti-volatilization effect on the electrophoresis liquid 11.

[0066] In a feasible implementation manner, the display layer 2 includes an OLED light-emitting device, that is, the aforementioned light-emitting device 8 is an organic light-emitting diode. The display panel provided by the present invention is an OLED display panel, and further is an OLED flexible inlaid display panel adopting an electrophoresis anti-peeping technology, which can have the advantages of OLED display, anti-peeping, flexibility and high integration.

[0067] Based on the same inventive concept, an embodiment of the present invention further provides a manufacturing method of a display panel, and this manufacturing method is used to manufacture and form the above display panel.

[0068] Combined with Figures 5 - 8 and, combined with Figure 15 and Figure 17 This manufacturing method includes: forming a first structure 28, the first structure 28 includes at least one panel area 29, and one panel area 29 corresponds to one display panel; the panel area 29 includes a substrate 1, a display layer 2 and a support layer 9, the support layer 9 is located on the side of the display layer 2 away from the substrate 1, the support layer 9 has an anti-peeping groove 10, and the anti-peeping groove 10 includes an electrophoresis liquid 11; placing a rigid substrate 19 carrying a flexible cover layer 18 on one side of the first structure 28, so that the flexible cover layer 18 is located between the rigid substrate 19 and the first structure 28; peeling off the rigid substrate 19; forming a first film layer 22 on the side of the flexible cover layer 18 away from the substrate 1, and the first film layer 22 at least covers the anti-peeping groove 10.

[0069] Combined with the foregoing analysis, it can be seen that the display panel formed by using this manufacturing method can avoid the problem of volatilization of the electrophoresis liquid 11 caused by the breakage of the flexible cover layer 18, and achieve a better anti-peeping function.

[0070] In a feasible implementation manner, within 2 minutes after the rigid substrate 19 is peeled off, the material of the first film layer 22 is coated on one side of the flexible cover layer 18 or the first film layer 22 is attached.

[0071] That is to say, in the process of manufacturing the display panel, the upper surface of the flexible cover layer 18 away from the substrate is only exposed for at most 2 minutes and then will be covered with the first film layer 22. Thus, when the flexible cover layer 18 is damaged with a notch 21, the exposure time of the electrophoresis liquid 11 is reduced, and it is quickly covered by the first film layer 22, preventing its volatilization from affecting the anti-peeping performance to a greater extent.

[0072] In a feasible implementation, the first film layer 22 is an optically transparent coating. The process of forming the first film layer 22 includes: coating an optically transparent material on one side of the flexible cover plate layer 18 and curing to form the first film layer 22.

[0073] This kind of optically transparent coating is not sticky and will not adhere to the electrophoresis particles 12 in the electrophoresis solution 11, and thus will not affect the distribution of the electrophoresis particles 12 in different modes. Moreover, this kind of optically transparent coating has a single-layer structure and high light transmittance, and will not affect the normal light emission of the display panel.

[0074] In a feasible implementation, the first film layer 22 can be a protective film and is directly attached to the first structure 28. When the display panel enters the subsequent module manufacturing process or after completing the subsequent module manufacturing process, the first film layer 22 can also be torn off to avoid occupying the module thickness, which helps to realize the thinning of the module.

[0075] In a feasible implementation, combining Figure 14 and Figure 15 , the first structure 28 includes a plurality of panel regions 29.

[0076] After forming the first film layer 22, the manufacturing method further includes: cutting the first structure 28 to form a plurality of independent display panels.

[0077] This kind of process is a large-sheet route. Combining the foregoing analysis, it can be seen that in the display panel formed by this process, the first film layer 22 does not shrink inward relative to the flexible cover plate layer 18, and the edge of the first film layer 22 is flush with the edge of the flexible cover plate layer 18. This process is relatively simple and does not require forming the first film layer 22 one by one for each display panel.

[0078] In a feasible implementation, combining Figure 16 and Figure 17 , the first structure 28 includes a single panel region 29.

[0079] When forming the first film layer 22, the area of the formation region of the first film layer 22 is smaller than the area of the flexible cover plate layer 18, and there is a gap between the edge of the formation region and the edge of the flexible cover plate layer 18.

[0080] This process is a small-particle route. Combining the foregoing analysis, it can be seen that if the coating area or attachment area of the first film layer 22 is set to coincide with the flexible cover plate layer 18 when using this process, it will not provide a certain margin for the coating accuracy or attachment accuracy. If there is a deviation in the coating position or attachment position, the first film layer 22 will protrude from the flexible cover plate layer 18 on at least one side. Therefore, in the embodiments of the present invention, the coating area or attachment area of the first film layer 22 can be set smaller to provide a certain margin for the coating accuracy or attachment accuracy. In this way, the formed first film layer 22 is retracted relative to the flexible cover plate layer 18, and the first film layer 22 does not completely cover the coverage area of the flexible cover plate layer 18.

[0081] Based on the same inventive concept, the embodiments of the present invention also provide a display device, as Figure 20 shown, Figure 20 is a schematic structural diagram of the display device provided by the embodiments of the present invention. The display device includes the above-mentioned display panel 100. Of course, Figure 20 the display device shown is only for illustrative purposes. The display device can be any electronic device with a display function, such as a mobile phone, a tablet computer, a laptop computer, an e-book reader, or a television.

[0082] The foregoing is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the scope of protection of the present invention.

[0083] 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 they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements 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 panel, characterized in that, It includes a substrate, a display layer, and a privacy layer located on the side of the display layer away from the substrate; wherein, the privacy layer includes: A support layer having privacy grooves, and electrophoresis liquid is included in the privacy grooves; A flexible cover layer located on the side of the support layer away from the substrate; A first film layer located on the side of the flexible cover layer away from the substrate and covering at least the privacy grooves.

2. The display panel according to claim 1, wherein The flexible cover layer has a notch that penetrates at least part of the thickness of the flexible cover layer, and the first film layer covers at least part of the notch.

3. The display panel according to claim 2, wherein The notch includes a first notch corresponding to the position where the privacy groove is located, and the first film layer covers the first notch.

4. The display panel according to claim 2, wherein The thickness of the first film layer at the notch position is greater than that at the non-notch position; And / or, the first film layer includes an upper surface away from the substrate, and the upper surface is recessed towards the substrate at the notch position.

5. The display panel according to claim 1, wherein The first film layer is an optically transparent coating.

6. The display panel according to claim 1, wherein The first film layer is an optical adhesive.

7. The display panel according to claim 1, wherein The first film layer includes an adhesive layer and a protective layer, and the adhesive layer is located between the protective layer and the flexible cover layer.

8. The display panel according to claim 1, wherein The material of the first film layer is the same as that of the flexible cover layer.

9. The display panel according to claim 1, wherein The thickness of the first film layer is d, 0.5μm ≤ d ≤ 10μm, and / or the transmittance of the first film layer is greater than or equal to 90%.

10. The display panel according to claim 1, wherein The display panel includes a display area and a non-display area surrounding the display area, and the first film layer covers at least the display area.

11. The display panel according to claim 10, wherein The edge of the first film layer is flush with the edge of the flexible cover layer.

12. The display panel according to claim 10, wherein The covering area of the first film layer is smaller than that of the flexible cover layer, and there is a gap between the edge of the first film layer and the edge of the flexible cover layer.

13. The display panel according to claim 1, wherein The display panel includes a first area and a second area, and the privacy groove is located in the first area; The film thickness of the part of the first film layer located in the second area is smaller than that of the part of the first film layer located in the first area; Or, the first film layer has a hollow in the second area.

14. The display panel according to claim 1, wherein The display layer includes an OLED light-emitting device.

15. A method for manufacturing a display panel, which is used to form the display panel according to any one of claims 1 to 14, characterized in that, It includes: Form a first structure, the first structure including at least one panel area, one panel area corresponding to one display panel; the panel area includes a substrate, a display layer, and a support layer, the support layer being located on a side of the display layer away from the substrate, the support layer having a privacy groove, and the privacy groove including electrophoretic liquid; Place a rigid substrate carrying a flexible cover layer on one side of the first structure, such that the flexible cover layer is located between the rigid substrate and the first structure; Peel off the rigid substrate; Form a first film layer on a side of the flexible cover layer away from the substrate, the first film layer at least covering the privacy groove.

16. The manufacturing method of the display panel according to claim 15, wherein, Within 2 minutes after peeling off the rigid substrate, apply a material of the first film layer or attach the first film layer on one side of the flexible cover layer.

17. The manufacturing method of the display panel according to claim 15, wherein, The first film layer is an optically transparent coating, and the process of forming the first film layer includes: applying an optically transparent material on one side of the flexible cover layer and curing to form the first film layer.

18. The manufacturing method of the display panel according to claim 15, wherein, The first structure includes a plurality of the panel areas; After forming the first film layer, the manufacturing method further includes: cutting the first structure to form a plurality of independent display panels.

19. The manufacturing method of the display panel according to claim 15, wherein, The first structure includes one panel area; When forming the first film layer, an area of a formation region of the first film layer is smaller than an area of the flexible cover layer, and there is a gap between an edge of the formation region and an edge of the flexible cover layer.

20. A display device, characterized in that, Including the display panel according to any one of claims 1 to 14.

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