Display panel, preparation method thereof and display device

Abstract

The invention provides a display panel, a preparation method thereof and a display device. The display panel comprises a substrate, a light-emitting layer and a peep-proof layer. The light-emitting layer is arranged on one side of the substrate and comprises a light-emitting area and a non-light-emitting area. The anti-peeping layer is arranged on the side, back on to the substrate, of the light-emitting layer and comprises an anti-peeping part and a non-peeping part, the anti-peeping part is arranged around the non-peeping part, the orthographic projection of the light-emitting area on the substrate is located in the orthographic projection of the non-peeping part on the substrate, and the orthographic projection of the anti-peeping part on the substrate and the orthographic projection of the non-light-emitting area on the substrate are arranged in an overlapped mode. Wherein the peep-proof part comprises a first function part, the non-peep-proof part comprises a second function part, and the refractive index of the second function part is larger than that of the first function part. The peep-proof performance of the display panel can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of display devices, and in particular to a display panel and a method for preparing the same, and a display device. Background Art

[0002] Flat display panels such as Liquid Crystal Display (LCD) panels, Organic Light Emitting Display (OLED) panels and display panels using Light Emitting Diode (LED) devices are widely used in various consumer electronic products such as mobile phones, televisions, personal digital assistants, digital cameras, laptops, desktop computers, etc. due to their advantages such as high image quality, power saving, thin body and wide application range, becoming the mainstream in display devices. Summary of the invention

[0003] Embodiments of the present application provide a display panel and a method for manufacturing the same, and a display device, which can improve the anti-peeping performance of the display panel.

[0004] In a first aspect, an embodiment of the present application provides a display panel, which includes a substrate, a light-emitting layer, and an anti-peep layer. The light-emitting layer is arranged on one side of the substrate, and the light-emitting layer includes a light-emitting area and a non-light-emitting area. The anti-peep layer is arranged on the side of the light-emitting layer facing away from the substrate, and the anti-peep layer includes an anti-peep portion and a non-anti-peep portion, the anti-peep portion is arranged around the non-anti-peep portion, the orthographic projection of the light-emitting area on the substrate is located within the orthographic projection of the non-anti-peep portion on the substrate, and the orthographic projection of the anti-peep portion on the substrate overlaps with the orthographic projection of the non-light-emitting area on the substrate. The anti-peep portion includes a first functional portion, the non-anti-peep portion includes a second functional portion, and the refractive index of the second functional portion is greater than the refractive index of the first functional portion.

[0005] In some embodiments, the second functional part is surrounded by the first functional part, the second functional part is arranged in contact with the first functional part, or the second functional part is arranged at a distance from the first functional part. In some embodiments, the first functional part includes one of an electrochromic material and a liquid crystal.

[0006] In some embodiments, the display panel further includes a touch layer located on the side of the anti-peeping layer away from the substrate, the touch layer includes a touch electrode, and the orthographic projection of the touch electrode on the substrate and the orthographic projection of the anti-peeping portion on the substrate are at least partially overlapped.

[0007] In some embodiments, the anti-peeping portion also includes a first electrode located in the first functional portion close to the substrate and a second electrode located in the first functional portion away from the substrate, and the orthographic projections of the first functional portion and the first electrode on the substrate are within the orthographic projection range of the second electrode on the substrate.

[0008] In some embodiments, an orthographic projection of the second electrode of the privacy protection portion on the substrate and an orthographic projection of the second functional portion on the substrate are arranged to be non-overlapping.

[0009] In some embodiments, at least a portion of the second electrode of the privacy protection portion covers a side of the second functional portion facing away from the substrate.

[0010] In some embodiments, a hollow space is provided in the second electrode, and part of the touch electrode is located in the hollow space.

[0011] In some embodiments, the touch electrode includes a first touch electrode, a second touch electrode and a bridge electrode. The first touch electrode and the second touch electrode are arranged in the same layer, and the bridge electrode is arranged in the hollow space.

[0012] In some embodiments, the first electrode encloses a plurality of electrode openings, the first functional portion encloses a plurality of functional openings, the orthographic projections of the functional openings on the substrate cover the orthographic projections of the electrode openings on the substrate, and the second functional portion is located within the electrode openings and the functional openings.

[0013] In some embodiments, the first touch electrode, the second touch electrode and the first electrode are disposed in the same layer.

[0014] In some embodiments, an insulating layer is provided between the anti-peep layer and the light-emitting layer, the insulating layer includes a recess, the orthographic projection of the light-emitting area on the substrate is located within the orthographic projection of the recess on the substrate, and part of the non-peep-proof portion is provided in the recess.

[0015] In some embodiments, the recess is disposed through the insulating layer.

[0016] In some embodiments, along the direction from the substrate to the anti-peeping layer, the size of the non-anti-peeping portion in the first direction gradually decreases, and the first direction is perpendicular to the thickness direction of the substrate.

[0017] In some embodiments, the display panel further includes an encapsulation layer, and the encapsulation layer is disposed between the light-emitting layer and the anti-peeping layer. Alternatively, the anti-peeping layer is disposed between the light-emitting layer and the encapsulation layer.

[0018] In some embodiments, the non-peeping portion further includes a third functional portion, the third functional portion is located on at least one side of the second functional portion, one side wall of the third functional portion contacts the first functional portion, and the other side wall contacts the second functional portion. The refractive index of the third functional portion is less than that of the first functional portion.

[0019] In some embodiments, in a direction away from the substrate, a surface of the third functional portion facing away from the substrate is higher than a surface of the privacy protection portion facing away from the substrate.

[0020] In some embodiments, the third functional portion encloses a receiving opening, and the second functional portion is located in the receiving opening.

[0021] In some embodiments, the display panel further includes a buffer layer located on one side of the anti-peep layer, and the second functional portion is provided in the same layer and with the same material as the buffer layer.

[0022] In some embodiments, the non-peeping portion further includes a first electrode located on a side of the second functional portion close to the substrate, a second electrode located on a side of the second functional portion away from the substrate, and the second electrode covers a side of the third functional portion away from the substrate.

[0023] In some embodiments, the second electrode is disposed as a whole layer, and a portion of the second electrode is located between the buffer layer and the third functional portion.

[0024] In the second aspect, the embodiment of the present application provides a method of forming a light-emitting layer on a substrate, wherein the light-emitting layer includes a light-emitting area and a non-light-emitting area. A first conductive layer and a first functional material layer are sequentially formed on the side of the light-emitting layer facing away from the substrate. The first functional material layer and the first conductive layer are patterned to form a first electrode and a first functional portion and an opening between the first electrode and the first functional portion. A non-peeping portion is prepared in the opening. A second electrode is formed on the side of the first functional portion facing away from the substrate, and the first electrode, the first functional portion and the second electrode form a peeping portion, which is arranged around the non-peeping portion, and the orthographic projection of the light-emitting area on the substrate is located within the orthographic projection of the non-peeping portion on the substrate, and the orthographic projection of the peeping portion on the substrate overlaps with the orthographic projection of the non-light-emitting area on the substrate. Wherein, the non-peeping portion includes a second functional portion, and the refractive index of the second functional portion is greater than the refractive index of the first functional portion.

[0025] In some embodiments, before the step of sequentially forming the first conductive layer and the first functional material layer on the side of the light-emitting layer facing away from the substrate, the step includes: forming an insulating material layer on the side of the light-emitting layer facing away from the substrate. The step of patterning the first functional material layer and the first conductive layer to form the first electrode and the first functional portion and the opening between the first electrode and the first functional portion includes: the opening penetrates the insulating material layer so that the insulating material layer forms an insulating layer.

[0026] In some embodiments, the step of preparing the non-peep-proof portion in the opening includes: forming a third functional material layer at least in the opening and patterning the third functional material layer to form a third functional portion and a receiving opening between the third functional portions. Preparing the second functional portion at least in the receiving opening.

[0027] In a third aspect, an embodiment of the present application provides a display device, comprising a display panel in any of the aforementioned embodiments.

[0028] The embodiments of the present application provide a display panel and a method for preparing the same, and a display device. A voltage is applied to a first functional portion through a first electrode and a second electrode, so that the anti-peeping portion changes the transmittance according to functional requirements, thereby causing the anti-peeping portion to reduce the range of light emitted by a light-emitting area in an anti-peeping state, thereby blocking the light under a preset viewing angle, and improving the anti-peeping performance of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solution of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0030] Figure 1 A schematic cross-sectional structure diagram of a display panel provided in an embodiment of the present application;

[0031] Figure 2 for Figure 1 Schematic diagram of the enlarged structure of P;

[0032] Figure 3 A schematic cross-sectional structure diagram of a display panel provided in an embodiment of the present application;

[0033] Figure 4 for Figure 3 Schematic diagram of the enlarged structure of the middle Q;

[0034] Figure 5 A schematic diagram of a top view structure of a display panel provided in an embodiment of the present application;

[0035] Figure 6 A schematic cross-sectional structure diagram of a display panel provided in an embodiment of the present application;

[0036] Figure 7 for Figure 6 Schematic diagram of the enlarged structure of R;

[0037] Figure 8 A schematic cross-sectional structure diagram of a display panel provided in an embodiment of the present application;

[0038] Fig. 9 for Figure 8 Schematic diagram of the enlarged structure of T;

[0039] Fig.10 A schematic cross-sectional structure diagram of a display panel provided in an embodiment of the present application;

[0040] Fig.11 for Fig.10 Schematic diagram of the enlarged structure of U in the middle;

[0041] Fig.12 A flow chart of a method for preparing a display panel provided in an embodiment of the present application;

[0042] Figures 13 to 23 A schematic diagram of the process structure of a method for preparing a display panel provided in an embodiment of the present application.

[0043] Marking Description:

[0044] 10. Substrate;

[0045] 20. luminescent layer; 21. luminescent area; 22. non-luminescent area;

[0046] 30. Encapsulation layer;

[0047] 40. insulating layer; 41. recess;

[0048] 50, anti-peeping layer; 51, anti-peeping portion; 511, first electrode; 512, first functional portion; 513, second electrode; 52, non-anti-peeping portion; 521, second functional portion; 522, third functional portion;

[0049] 60. touch layer; 61. bridge electrode; 70. buffer layer;

[0050] E1, hollow space;

[0051] TH1, first conductive layer; TH2, first functional material layer;

[0052] MK1, the first mask plate; MK2, the second mask plate. DETAILED DESCRIPTION

[0053] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only intended to explain the present application, rather than to limit the present application. For those skilled in the art, the present application can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present application by illustrating the examples of the present application.

[0054] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "include..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0055] Figure 1A schematic diagram of the cross-sectional structure of a display panel provided in an embodiment of the present application. Figure 2 for Figure 1 Schematic diagram of the enlarged structure of P.

[0056] In view of this, first of all, please refer to Figure 1 and Figure 2 The embodiment of the present application provides a display panel, which includes a substrate 10, a light-emitting layer 20 and an anti-peeping layer 50. The light-emitting layer 20 is arranged on one side of the substrate 10, and the light-emitting layer 20 includes a light-emitting area 21 and a non-light-emitting area 22. The anti-peeping layer 50 is arranged on the side of the light-emitting layer 20 facing away from the substrate 10, and the anti-peeping layer 50 includes an anti-peeping portion 51 and a non-anti-peeping portion 52. The anti-peeping portion 51 is arranged around the non-anti-peeping portion 52, and the orthographic projection of the light-emitting area 21 on the substrate 10 is located within the orthographic projection of the non-anti-peeping portion 52 on the substrate 10, and the orthographic projection of the anti-peeping portion 51 on the substrate 10 overlaps with the orthographic projection of the non-light-emitting area 22 on the substrate 10. Among them, the anti-peeping portion 51 includes a first electrode 511, a first functional portion 512 and a second electrode 513 which are sequentially arranged in a direction away from the substrate 10, and the display panel includes an anti-peeping state. In the anti-peeping state, the first electrode 511 and the second electrode 513 apply a voltage to the first functional portion 512 to change the light transmittance of the anti-peeping portion 51.

[0057] In some embodiments of the present application, the display panel provided in the embodiments of the present application may be an organic light emitting diode (OLED) display panel.

[0058] Optionally, the substrate 10 may include an array substrate 10 , and the array substrate 10 may include a substrate 10 and an array layer disposed on the substrate 10 .

[0059] Exemplarily, the substrate 10 can be a hard substrate 10, such as a glass substrate 10; it can also be a flexible substrate 10, whose material can be polyimide, polystyrene, polyethylene terephthalate, polyparaxylene, polyethersulfone or polyethylene naphthalate. The substrate 10 is mainly used to support the device arranged thereon.

[0060] The array layer may include a pixel driving circuit. For example, the array layer may include a first conductive layer TH1, a second conductive layer, and a third conductive layer that are disposed on one side of the substrate 10 and are stacked. An insulating layer 40 is disposed between adjacent conductive layers. Exemplarily, the pixel driving circuit disposed in the array layer includes a transistor and a storage capacitor. The transistor includes an active layer, a gate, a source, and a drain. The storage capacitor includes a first plate and a second plate. As an example, the gate and the first plate may be located in the first conductive layer TH1, the second plate may be located in the second conductive layer, and the source and the drain may be located in the third conductive layer.

[0061] The light-emitting layer 20 is disposed on the substrate 10. For example, the light-emitting layer 20 can be disposed on the side of the array layer facing away from the substrate 10. The light-emitting layer 20 can also include a light-emitting unit. The number of light-emitting units can include multiple light-emitting units. The light emitted by the multiple light-emitting units can be different. For example, the light-emitting unit can include a red light-emitting unit, a green light-emitting unit, and a blue light-emitting unit. The light-emitting unit can include an anode layer, a light-emitting functional layer, and a cathode layer, wherein the anode layer is located on the side of the light-emitting functional layer facing the substrate 10, and the cathode layer is located on the side of the light-emitting functional layer facing away from the substrate 10.

[0062] There may be multiple light-emitting areas 21, and the number of light-emitting areas 21 and the number of light-emitting units may be set in a one-to-one correspondence. For example, one light-emitting unit is provided in each light-emitting area 21. Of course, multiple light-emitting units may also be provided in each light-emitting area 21, and the distance between adjacent light-emitting areas 21 is greater than the distance between the light-emitting units.

[0063] Optionally, the non-luminous area 22 may be arranged around the luminous area 21. Exemplarily, the non-luminous area 22 is in a grid shape, and a plurality of luminous areas 21 are arranged in the grid.

[0064] Optionally, the number of the non-peeping parts 52 may include multiple ones, and the number of the non-peeping parts 52 and the number of the light-emitting areas 21 may be set in a one-to-one correspondence. For example, the orthographic projection of each light-emitting area 21 on the substrate 10 is located within the orthographic projection of each non-peeping part 52 on the substrate 10. Of course, the orthographic projections of multiple light-emitting areas 21 on the substrate 10 are located within the orthographic projection of one non-peeping part 52 on the substrate 10.

[0065] Optionally, the anti-peeping portion 51 is arranged around the non-anti-peeping portion 52. Exemplarily, the anti-peeping portion 51 is in a grid shape, and a plurality of non-anti-peeping portions 52 are arranged in the grid.

[0066] Optionally, the orthographic projection of the privacy protection portion 51 on the substrate 10 is located within the orthographic projection of the non-luminous area 22 on the substrate 10 .

[0067] In the embodiment of the present application, the anti-peeping portion 51 includes a first functional portion 213, and the non-anti-peeping portion 52 includes a second functional portion 521. The refractive index of the second functional portion 521 is greater than the refractive index of the first functional portion 512. The light passing through the anti-peeping portion 51 is more easily scattered or reflected, so that the content displayed on the display panel becomes blurred or invisible when viewed from an anti-peeping perspective (for example, from the side), thereby enhancing the privacy protection function. In addition, since the refractive index of the non-anti-peeping portion 52 is higher, the light propagates forward more concentratedly, thereby improving the brightness and contrast provided at a preset viewing angle (for example, from the front) and reducing the brightness when viewed from an anti-peeping perspective (for example, from the side), thereby improving the anti-peeping performance and focusing effect of the display panel.

[0068] In some optional embodiments, as shown in the figure, the second functional portion 521 is surrounded by the first functional portion 512 , the second functional portion 521 is arranged in contact with the first functional portion 512 , or the second functional portion 521 is arranged at a distance from the first functional portion 512 .

[0069] In some examples, the second functional portion 521 is enclosed around the first functional portion 512, that is, the second functional portion 521 is arranged in the surrounding area of ​​the first functional portion 512. Optionally, the orthographic projection of the second functional portion 521 on the substrate may be a continuous closed shape, that is, the second functional portion 521 surrounds one or more independent first functional portions 512. The orthographic projection shape of the second functional portion 521 on the substrate may also be discontinuous, that is, two different first functional portions 512 enclosed by two adjacent second functional portions 521 may be arranged in contact.

[0070] In some examples, the second functional portion 521 is disposed in contact with the first functional portion 512. In other examples, the second functional portion 521 is disposed at intervals from the first functional portion 512. Here, "contact" and "interval" refer to the first functional portion 512 and the second functional portion 521 being disposed in contact or at intervals in the first direction. Optionally, the first direction is perpendicular to the thickness direction.

[0071] The above configuration of the embodiment of the present application is beneficial to improving the arrangement flexibility of the first functional portion 512 and the second functional portion 521 and improving the application range of the display panel.

[0072] Optionally, the first functional portion 512 includes one of an electrochromic material and a liquid crystal.

[0073] In some optional embodiments, the first functional portion 512 includes one of an electrochromic material and a liquid crystal.

[0074] Optionally, the electrochromic material includes at least one of tungsten oxide (WO3), niobium oxide (Nb2O5), and titanium oxide (TiO2). The electrochromic material may have a reduced transmittance as the applied voltage increases, or may have an increased transmittance as the applied voltage increases. In short, the present application does not limit the specific material of the electrochromic material, as long as its transmittance can change with the applied voltage.

[0075] Optionally, the liquid crystal is a polymer liquid crystal (PDLC). When a polymer liquid crystal is used, the anti-peeping part 51 uses the dielectric anisotropy of the polymer liquid crystal to obtain an electro-optical response characteristic, and freely switches between a scattering state and a transparent state. The polymer liquid crystal (PDLC) mixes droplets with a polymer, and the droplets include a plurality of low-molecular liquid crystals, and the low-molecular liquid crystals are dispersed into a plurality of droplets through the polymer. The low-molecular liquid crystal can be a nematic liquid crystal whose arrangement changes by the vertical electric field of the first electrode 511 and the second electrode 513, but is not limited thereto. When no electric field is applied, the low-molecular liquid crystal is freely arranged in the droplets, and all the droplets are also disorderly arranged, and scattering occurs between the polymer and the low-molecular liquid crystal, forming a dark state; when an electric field is applied, the low-molecular liquid crystal will present a consistent parallel arrangement, so that the refractive index of the polymer is consistent with the light refractive index of the low-molecular liquid crystal, and there is no scattering between the polymer and the low-molecular liquid crystal, presenting a bright state. When the liquid crystal in the first functional portion 512 forms a dark state, light of a preset viewing angle cannot pass through the anti-peeping portion 51, thereby achieving anti-peeping; when the liquid crystal in the first functional portion 512 forms a bright state, light of a preset viewing angle can pass through the anti-peeping portion 51, thereby achieving a shared state of the display panel.

[0076] Optionally, the material of the first functional portion 512 includes semi-alicyclic polyimide, optical adhesive doped with titanium dioxide nanoparticles, polystyrene (PS), and the like.

[0077] Optionally, the material of the second functional portion 521 includes polymethyl methacrylate (PMMA), polyethylene terephthalate (PET), polycarbonate (PC), and the like.

[0078] In some optional embodiments, Figure 1 As shown, the display panel further includes a touch layer 60 located on the side of the anti-peeping layer away from the substrate. The touch layer 60 includes touch electrodes. The orthographic projection of the touch electrode on the substrate 10 and the orthographic projection of the anti-peeping portion 51 on the substrate 10 are at least partially overlapped.

[0079] Optionally, the touch layer 60 may be located on a side of the anti-peeping layer 50 facing away from the substrate 10 .

[0080] Optionally, the orthographic projection of the touch electrode on the substrate 10 is located within the orthographic projection of the anti-peeping portion 51 on the substrate 10, or the orthographic projection of the anti-peeping portion 51 on the substrate 10 is located within the orthographic projection of the touch electrode on the substrate 10, or the orthographic projection of the touch electrode on the substrate 10 and the orthographic projection of the anti-peeping portion 51 on the substrate 10 are overlapped.

[0081] Optionally, the orthographic projection of the touch electrode on the substrate 10 is located within the orthographic projection of the non-luminous area 22 on the substrate 10, or, the orthographic projection of the non-luminous area 22 on the substrate 10 is located within the orthographic projection of the touch electrode on the substrate 10, or, the orthographic projection of the touch electrode on the substrate 10 and the orthographic projection of the non-luminous area 22 on the substrate 10 are overlapped.

[0082] In these optional embodiments, through the above configuration, the touch electrode and the non-peeping portion 52 at least partially share a portion of the space, thereby reducing the shielding of the light from the light-emitting area 21 by the touch electrode and improving space utilization.

[0083] Figure 3 A schematic diagram of the cross-sectional structure of a display panel provided in an embodiment of the present application. Figure 4 for Figure 3 Schematic diagram of the amplified structure of medium Q.

[0084] In some optional embodiments, Figures 1 to 4 As shown, the anti-peeping portion 51 also includes a first electrode 511 located in the first functional portion 512 close to the substrate 10 and a second electrode 513 located in the first functional portion 512 away from the substrate 10. The orthographic projections of the first functional portion 512 and the first electrode 511 on the substrate 10 are within the orthographic projection range of the second electrode 513 on the substrate 10.

[0085] Optionally, the first electrode 511 and the second electrode 513 may be transparent electrodes. For example, the materials of the first electrode 511 and the second electrode 513 include silver oxide, aluminum oxide, tungsten oxide, magnesium oxide, molybdenum oxide, zinc oxide, tin oxide, indium oxide, chromium oxide, antimony oxide, titanium oxide, nickel oxide, copper oxide, vanadium oxide, cobalt oxide, iron oxide, niobium oxide, indium tin oxide, indium zinc oxide, aluminum-doped zinc oxide, aluminum tin oxide, or antimony tin oxide, but are not limited thereto. The materials of the first electrode 511 and the second electrode 513 may be the same, or may be different.

[0086] Optionally, the display panel may include an anti-peeping state, when the display panel is in the anti-peeping state, the light emitted by the light emitting area 21 cannot be observed from a preset viewing angle. For example, the observation of the display panel includes a main viewing angle and a side viewing angle, and the preset viewing angle includes a side viewing angle.

[0087] Specifically, the anti-peeping portion 51 includes a first electrode 511, a first functional portion 512 and a second electrode 513. The first electrode 511 and the second electrode 513 can apply a voltage to the first functional portion 512, and the transmittance of the first functional portion 512 changes with the applied voltage. When the display panel is in the anti-peeping state, the voltage applied by the first electrode 511 and the second electrode 513 is a first range voltage, the transmittance of the first functional portion 512 decreases, and the brightness of the light emitted by the light-emitting area 21 from the first functional portion 512 decreases or even cannot be emitted from the first functional portion 512, and the light emitted by the light-emitting area 21 cannot be observed from a side viewing angle; the display panel also includes a sharing state. When the display panel is in the sharing state, the voltage applied by the first electrode 511 and the second electrode 513 is a second range voltage, the transmittance of the first functional portion 512 is improved, and the light emitted by the light-emitting area 21 can be emitted from the first functional portion 512, so that the light emitted by the light-emitting area 21 can be observed regardless of whether it is at a main viewing angle or a side viewing angle.

[0088] It can be understood that the range of light emitted from the light-emitting area 21 to the display surface of the display panel is larger than the area of ​​the orthographic projection of the light-emitting area 21 on the substrate 10, and the light range may include a first light range area and a second light range area, the orthographic projection of the first light range area on the substrate 10 and the orthographic projection of the light-emitting area 21 on the substrate 10 are overlapped, and the second light range area surrounds the first light range area, the first light-emitting range area is formed by emitting through the non-peeping portion 52, and the second light-emitting range area is formed by emitting through the anti-peeping portion 51. When the display panel is in the anti-peeping state, the transmittance of the anti-peeping portion 51 decreases, so that the brightness of the light emitted from the light-emitting area 21 after passing through the anti-peeping portion 51 is weakened or even cannot be emitted from the anti-peeping portion 51, so that the area of ​​the second light-emitting range area is reduced or even the second light-emitting range area is eliminated, so that the anti-peeping portion 51 reduces the light range emitted by the light-emitting area 21 in the anti-peeping state, thereby blocking the light at a preset viewing angle, thereby improving the anti-peeping performance of the display panel.

[0089] The orthographic projections of the first functional portion 512 and the first electrode 511 on the substrate 10 are located within the orthographic projection range of the second electrode 513 on the substrate 10, that is, the orthographic projection of the first functional portion 512 on the substrate 10 is located within the orthographic projection range of the second electrode 513 on the substrate 10, and the orthographic projection of the first electrode 511 on the substrate 10 is located within the orthographic projection range of the second electrode 513 on the substrate 10.

[0090] In some embodiments, Figure 1 and Figure 2 As shown, the orthographic projection of the second electrode 513 of the privacy protection portion 51 on the substrate 10 does not overlap with the orthographic projection of the second functional portion 521 on the substrate 10 . In other words, the second electrode 513 does not cover the side of the second functional portion 521 facing away from the substrate 10 .

[0091] like Figure 3 and Figure 4 As shown, at least a portion of the second electrode 513 of the privacy protection portion 51 covers the side of the second functional portion 521 facing away from the substrate 10 .

[0092] As an example, the second electrode 513 of one privacy protection portion 51 covers the side of the second functional portion 521 in the non-privacy protection portion 52 on the periphery of the privacy protection portion 51 that is away from the substrate 10. Furthermore, the second electrodes 513 in two adjacent privacy protection portions 51 are connected to form a whole, and the second electrodes 513 in two adjacent privacy protection portions 51 cover the side of the second functional portion 521 between the two adjacent privacy protection portions 51 that is away from the substrate 10.

[0093] The second electrode 513 covers the side of the second functional portion 521 facing away from the substrate 10 . It can be understood that a portion of the second electrode 513 is located on the side of the second functional portion 521 facing away from the substrate 10 .

[0094] It is understandable that for controlling the first functional part 512 , the second electrode 513 can be used as a common electrode (eg, a cathode), and the common electrodes of multiple anti-peeping parts 51 can be connected to form a whole, thereby reducing the preparation steps of the anti-peeping parts 51 and improving production efficiency.

[0095] Optionally, the second electrodes 513 of all the privacy protection parts 51 are interconnected to form a whole-layer structure, that is, the second electrodes 513 are surface electrodes; or, the second electrodes 513 of a part of the privacy protection parts 51 are interconnected to form an integral structure.

[0096] In some optional embodiments, Figure 5 As shown, a hollow space E1 is defined in the second electrode 513 , and part of the touch electrodes are located in the hollow space E1 .

[0097] For example, taking the second electrode 513 as a whole surface electrode, a hollow space E1 is provided in the second electrode 513, and the hollow space E1 can be set through the second electrode 513. Optionally, the orthographic projection of the hollow space E1 on the substrate 10 can be located within the orthographic projection of the non-luminous area 22 on the substrate 10.

[0098] In these optional embodiments, a portion of the touch electrodes are disposed in the hollow space E1, so that a portion of the touch electrodes and the second electrode 513 are disposed in the same layer, thereby reducing the number of touch electrode film layers, thereby reducing the overall thickness of the touch layer 60, and achieving a thinner display panel.

[0099] Figure 5 A schematic diagram of the top structure of a display panel provided in an embodiment of the present application.

[0100] In some optional embodiments, Figure 5As shown, the touch electrode includes a first touch electrode, a second touch electrode and a bridge electrode 61 . The first touch electrode and the second touch electrode are arranged in the same layer, and the bridge electrode 61 is arranged in the hollow space E1 .

[0101] Optionally, the first touch electrode and the second touch electrode are arranged in the same layer, and the bridge electrode 61 and the first touch electrode are arranged in different layers. Optionally, the bridge electrode 61 is located on a side of the first touch electrode facing the substrate 10 .

[0102] Optionally, two adjacent first touch control electrodes are electrically connected via a bridge electrode 61 ; and / or, two adjacent second touch control electrodes are electrically connected via a bridge electrode 61 .

[0103] Optionally, the bridge electrode 61 may be extended along a single direction.

[0104] In these optional embodiments, by disposing the bridge electrode 61 in the hollow space E1 , it is beneficial to reduce the space occupied by the touch electrode in the film layer where the second electrode 513 is located, and at the same time reduce the number of film layers of the touch layer 60 .

[0105] In some optional embodiments, the first electrode 511 encloses a plurality of electrode openings, the first functional portion 512 encloses a plurality of functional openings, the orthographic projections of the functional openings on the substrate 10 cover the orthographic projections of the electrode openings on the substrate 10, and the second functional portion 521 is located within the electrode openings and the functional openings.

[0106] As an example, a portion of the second functional portion 521 is located in the electrode opening, and another portion of the second functional portion 521 is located in the functional opening.

[0107] Optionally, the plurality of electrode openings and the plurality of functional openings are arranged in one-to-one correspondence.

[0108] Optionally, the first touch electrode, the second touch electrode and the first electrode 511 are arranged in the same layer.

[0109] Optionally, the first electrodes 511 of each peep-proof portion 51 are arranged independently of each other.

[0110] In the embodiment of the present application, the first touch electrode, the second touch electrode and the first electrode 511 are arranged in the same layer, so that the conductive film layer in the anti-peeping layer 50 and the conductive film layer in the touch layer 60 can be prepared in one preparation process, thereby reducing process links and improving production efficiency.

[0111] In some other examples, the touch control electrodes are multiplexed as the first electrodes 511 . For example, the first touch control electrodes are multiplexed as the first electrodes 511 ; or the second touch control electrodes are multiplexed as the first electrodes 511 ; or the bridge electrodes 61 are multiplexed as the first electrodes 511 .

[0112] Figure 6 A schematic diagram of the cross-sectional structure of a display panel provided in an embodiment of the present application. Figure 7 for Figure 6 Schematic diagram of the enlarged structure of R.

[0113] In some optional embodiments, Figure 6 and Figure 7 As shown, an insulating layer 40 is provided between the anti-peeping layer 50 and the light-emitting layer 20 , the insulating layer 40 includes a recess 41 , the orthographic projection of the light-emitting area 21 on the substrate 10 is located within the orthographic projection of the recess 41 on the substrate 10 , and part of the non-peeping portion 52 is provided in the recess 41 .

[0114] Optionally, the material of the insulating layer 40 includes a light-transmitting material.

[0115] Optionally, the material of the insulating layer 40 includes a photoresist material.

[0116] Optionally, the display panel may further include an encapsulation layer 30 , and the encapsulation layer 30 , the insulating layer 40 , the anti-peeping layer 50 and the touch layer 60 are sequentially disposed on the side of the light emitting layer 20 facing away from the substrate 10 .

[0117] Optionally, the material of the first functional portion 512 may be a flowable material, and the insulating layer 40 and the non-peep-proof portion 52 together limit the area where the first functional portion 512 is located, thereby reducing the risk of the material of the first functional portion 512 overflowing and causing a decrease in the reliability of the display panel.

[0118] Optionally, a portion of the second functional portion 521 is disposed in the recess 41 .

[0119] In these optional embodiments, by setting part of the non-peep portion 52 in the recess 41, the distance between the non-peep portion 52 and the light-emitting area 21 is shortened, and the range of light passing through the non-peep portion 52 is increased, thereby increasing the brightness of light emitted from the non-peep portion 52, thereby improving the display effect of the display panel.

[0120] Optionally, the recess 41 is disposed through the insulating layer 40 to further shorten the distance between the non-peeping portion 52 and the light-emitting area 21 , thereby further increasing the brightness of light emitted from the non-peeping portion 52 and improving the display effect of the display panel.

[0121] Optionally, along the direction from the substrate 10 to the privacy layer 50 , the size of the non-privacy portion 52 in the first direction gradually decreases, so that the cross-sectional shape of the non-privacy portion 52 in the thickness direction may be an inverted trapezoid.

[0122] In some optional embodiments, Figure 6As shown, the display panel further includes an encapsulation layer 30 , and the encapsulation layer 30 is disposed between the light emitting layer 20 and the anti-peeping layer 50 ; or, the anti-peeping layer 50 is disposed between the light emitting layer 20 and the encapsulation layer 30 .

[0123] In some examples, the encapsulation layer 30 is located between the light emitting layer 20 and the privacy protection layer 50. In other examples, the privacy protection layer 50 is located between the light emitting layer 20 and the encapsulation layer 30.

[0124] The above configuration of the embodiment of the present application is helpful to improve the arrangement flexibility of the anti-peeping layer 50 and increase the application range of the display panel.

[0125] In some optional embodiments, Figures 8 to 11 As shown, the non-peeping portion 52 further includes a third functional portion 522, which is located on at least one side of the second functional portion 521, and one side wall of the third functional portion 522 contacts the first functional portion 512, and the other side wall contacts the second functional portion 521. The refractive index of the third functional portion 522 is less than that of the first functional portion 512.

[0126] As an example, the first functional portion 512 and the second functional portion 521 are arranged side by side along the first direction, and the third functional portion 522 is located on one side or both sides of the second functional portion 521 along the first direction. One side wall of the third functional portion 522 contacts the first functional portion 512, and the other side wall contacts the second functional portion 521, that is, the third functional portion 522 is located between the first functional portion 512 and the second functional portion 521.

[0127] In the embodiment of the present application, the third functional portion 522 is provided to further reduce the light emitted from the anti-peeping viewing angle (such as the side), thereby improving the focusing effect of the display panel.

[0128] In some embodiments, in the direction away from the substrate 10, the surface of the third functional portion 522 on the side facing away from the substrate 10 is higher than the surface of the anti-peep portion 51 on the side facing away from the substrate 10. In other words, the third functional portion 522 is arranged to protrude from the anti-peep portion 51 in the direction away from the substrate 10, so as to reduce the possibility of the non-anti-peep portion 52 prepared in the opening enclosed by the third functional portion 522 overflowing to the area where the anti-peep portion 51 is located, thereby reducing the effective refractive index of the area where the anti-peep portion 51 is located, and improving the anti-peep performance of the display panel.

[0129] In some embodiments, the third functional portion 522 encloses a receiving opening, and the second functional portion 521 is located in the receiving opening.

[0130] In some embodiments, the display panel further includes a buffer layer 70 located on one side of the anti-peep layer 50 , and the second functional portion 521 is provided in the same layer and with the same material as the buffer layer 70 .

[0131] As an example, at least a portion of the buffer layer 70 is located on the side of the second electrode 513 facing away from the substrate 10. For example, the buffer layer 70 is entirely located on the side of the second electrode 513 facing away from the substrate 10. Optionally, the buffer layer 70 is spaced apart from the second functional portion 521. Of course, the buffer layer 70 and the second functional portion 521 may also be connected.

[0132] As an example, a portion of the buffer layer 70 is located on a side of the second electrode 513 facing away from the substrate 10 , and another portion of the buffer layer 70 is located on a side of the third functional portion 522 facing away from the substrate 10 .

[0133] In the embodiment of the present application, the buffer layer 70 is provided to increase the arrangement area of ​​the second functional portion 521 during preparation, thereby reducing the preparation accuracy of the second functional portion 521 and improving the preparation yield of the display panel.

[0134] In some embodiments, the non-peeping portion 52 also includes a first electrode 511 located on the side of the second functional portion 521 close to the substrate 10, and a second electrode 513 located on the side of the second functional portion 521 away from the substrate 10, and the second electrode 513 covers the side of the third functional portion 522 away from the substrate 10.

[0135] In some examples, a portion of the second electrode 513 covers a side of the first functional portion 512 facing away from the substrate 10 , and another portion of the second electrode 513 covers a side of the third functional portion 522 facing away from the substrate 10 .

[0136] Furthermore, the second electrode 513 is arranged as a whole layer, that is, the second electrodes 513 of multiple anti-peep parts 51 are interconnected to form a whole, and a part of the second electrode 513 is located between the buffer layer 70 and the third functional part 522, so as to improve the design flexibility of the second electrode 513 and improve the application range of the display panel.

[0137] Fig.12 A flow chart of a method for preparing a display panel provided in an embodiment of the present application. Figures 13 to 23 A schematic diagram of the process structure of a method for preparing a display panel provided in an embodiment of the present application.

[0138] like Fig.12 As shown, the embodiment of the second aspect of the present application further provides a method for preparing a display panel. The method for preparing a display panel comprises the following steps:

[0139] S100 , forming a light-emitting layer 20 on a substrate 10 , wherein the light-emitting layer 20 includes a light-emitting region 21 and a non-light-emitting region 22 .

[0140] Alternatively, if Fig.13As shown, the display panel may include an OLED display panel, the light-emitting layer 20 may include light-emitting units, the light-emitting units form a light-emitting area 21 , and the area between two adjacent light-emitting units forms a non-light-emitting area 22 .

[0141] S200 , sequentially forming a first conductive layer TH1 and a first functional material layer TH2 on a side of the light emitting layer 20 facing away from the substrate 10 .

[0142] Specifically, Fig.13 As shown, a first conductive layer TH1 and a first functional material layer TH2 may be formed in sequence on the side of the light emitting layer 20 facing away from the substrate 10 .

[0143] S300 , patterning the first functional material layer TH2 and the first conductive layer TH1 to form a first electrode 511 , a first functional portion 512 , and an opening between the first electrode 511 and the first functional portion 512 .

[0144] Specifically, the patterning of the first functional material layer TH2 and the first conductive layer TH1 can be formed by one mask process, and of course, can also be formed by two mask processes.

[0145] For example, Fig.14 and Fig.15 As shown, when the patterning of the first functional material layer TH2 and the first conductive layer TH1 can be prepared by a mask process, after the first functional material layer TH2 and the first conductive layer TH1 are prepared, a first mask plate MK1 is set on the side of the first functional material layer TH2 facing away from the substrate 10, and different etching materials are used to etch the first functional material layer TH2 and the first conductive layer TH1 respectively to form a first electrode 511, a first functional portion 512 and an opening located between the first electrode 511 and the first functional portion 512.

[0146] For example, Fig.16 As shown, when the patterning of the first functional material layer TH2 and the first conductive layer TH1 can be prepared by two mask processes, after the first conductive layer TH1 is prepared, a second mask MK2 is set on the side of the first conductive layer TH1 facing away from the substrate 10, and the first conductive layer TH1 is etched to form the first electrode 511 and the electrode opening penetrating the first electrode 511, and then the first functional material layer TH2 is formed on the side of the first electrode 511 facing away from the substrate 10 and above the electrode opening. A third mask is set on the side of the first functional material layer TH2 facing away from the substrate 10, and the first functional material layer TH2 is etched to form the first functional portion 512 and the functional opening penetrating the first functional portion 512, and the electrode opening and the functional opening are connected to form an opening.

[0147] S400, preparing a non-peep-proof portion 52 in the opening.

[0148] Alternatively, if Fig.17 As shown, the non-privacy portion 52 can be prepared by ink jet printing (ijp).

[0149] S500, forming a second electrode 513 on the side of the first functional portion 512 facing away from the substrate 10, the first electrode 511, the first functional portion 512 and the second electrode 513 form an anti-peeping portion 51, the anti-peeping portion 51 is arranged around the non-anti-peeping portion 52, the orthographic projection of the luminous area 21 on the substrate 10 is located within the orthographic projection of the non-anti-peeping portion 52 on the substrate 10, the orthographic projection of the anti-peeping portion 51 on the substrate 10 is overlapped with the orthographic projection of the non-luminous area 22 on the substrate 10; wherein, the non-anti-peeping portion 52 includes a second functional portion 521, and the refractive index of the second functional portion 521 is greater than the refractive index of the first functional portion 512.

[0150] Specifically, Fig.18 As shown, a whole layer of the second electrode 513 can be formed on the side of the first functional layer facing away from the substrate 10 and on the side of the non-peep-proof portion 52 facing away from the substrate 10, thereby reducing the difficulty of preparing the second electrode 513 and reducing the process steps.

[0151] In some optional embodiments, Fig.19 As shown, before the step of sequentially forming the first conductive layer TH1 and the first functional material layer TH2 on the side of the light emitting layer 20 facing away from the substrate 10, the steps include:

[0152] S600, forming an insulating material layer on the side of the light emitting layer 20 facing away from the substrate 10;

[0153] The step of patterning the first functional material layer TH2 and the first conductive layer TH1 to form the first electrode 511 and the first functional portion 512 and an opening between the first electrode 511 and the first functional portion 512 includes:

[0154] S310 , openings are formed through the insulating material layer so that the insulating material layer forms an insulating layer 40 .

[0155] During the patterning process of the opening, the opening penetrates the insulating material layer, so that a portion of the non-peeping portion 52 and the insulating material layer can be in the same layer during the preparation process.

[0156] In some other embodiments, the opening only penetrates the first conductive layer TH1 and the first functional material layer TH2 , and the insulating material layer entirely covers the encapsulation layer 30 to form the insulating layer 40 .

[0157] In some optional embodiments, Fig. 20 As shown, the steps of preparing the non-peeping portion 52 in the opening include:

[0158] S410 , forming a third functional material layer at least in the opening and patterning the third functional material layer to form third functional portions 522 and receiving openings located between the third functional portions 522 .

[0159] Specifically, Figure 20 to Figure 22 As shown, a fourth mask is arranged on the side of the third functional material layer facing away from the substrate 10, and the third functional material layer is etched to form a third functional portion 522 and a receiving opening penetrating the third functional portion 522. Optionally, the preparation of the first functional material layer TH2 can be performed after the patterning process of the third functional material layer, so that the third functional layer plays a role in separating the first functional portion 512 and the second functional portion 521. For example, after the first electrode 511 is prepared, the third functional layer is prepared first and then the first functional layer is prepared. Of course, the third functional layer can also be prepared first and then the first electrode 511 and the first functional layer, or the first electrode 511 and the first functional layer can be prepared first and then the third functional layer.

[0160] S420, preparing a second functional portion 521 at least in the receiving opening.

[0161] Specifically, Fig.23 As shown, the second functional portion 521 can be prepared after the second electrode 513 is prepared, thereby reducing the possibility that the material of the second functional portion 521 remains on the side of the first functional portion 512 facing away from the substrate 10. Optionally, the buffer layer 70 can also be prepared when the second functional portion 521 is prepared.

[0162] The embodiment of the third aspect of the present application also provides a display device, including the display panel of any of the first aspect embodiments. Since the display device provided by the embodiment of the third aspect of the present application includes the display panel of any of the first aspect embodiments, the display device provided by the embodiment of the third aspect of the present application has the beneficial effects of the display panel of any of the first aspect embodiments, which will not be described in detail here.

[0163] The display device in the embodiments of the present application includes but is not limited to mobile phones, personal digital assistants (PDAs), tablet computers, e-books, televisions, access control systems, smart landline phones, consoles, and other devices with display functions.

[0164] Although the embodiments disclosed in this application are as above, the contents described are only embodiments adopted for facilitating the understanding of this application and are not intended to limit the present invention. Any technician in the technical field to which this application belongs can make any modifications and changes in the form and details of implementation without departing from the spirit and scope disclosed in this application, but the scope of protection of this application shall still be subject to the scope defined in the attached claims.

[0165] The above is only a specific implementation of the present application. Those skilled in the art can clearly understand that for the convenience and simplicity of description, the replacement of other connection methods described above can refer to the corresponding process in the aforementioned method embodiment, and will not be repeated here. It should be understood that the protection scope of the present application is not limited to this. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed in this application, and these modifications or replacements should be included in the protection scope of the present application.

Claims

1. A display panel, characterized in that: include: substrate; A light-emitting layer is disposed on one side of the substrate, and the light-emitting layer includes a light-emitting area and a non-light-emitting area; an anti-peeping layer, arranged on a side of the light-emitting layer facing away from the substrate, the anti-peeping layer comprising an anti-peeping portion and a non-anti-peeping portion, the anti-peeping portion being arranged around the non-anti-peeping portion, the orthographic projection of the light-emitting area on the substrate being located within the orthographic projection of the non-anti-peeping portion on the substrate, and the orthographic projection of the anti-peeping portion on the substrate being arranged to overlap with the orthographic projection of the non-light-emitting area on the substrate; The anti-peeping portion includes a first functional portion, the non-anti-peeping portion includes a second functional portion, and a refractive index of the second functional portion is greater than a refractive index of the first functional portion.

2. The display panel according to claim 1, characterized in that: The second functional part is surrounded by the first functional part, the second functional part is arranged in contact with the first functional part, or the second functional part is arranged at a distance from the first functional part; Preferably, the first functional portion includes one of an electrochromic material and a liquid crystal.

3. The display panel according to claim 1, characterized in that: The display panel further includes a touch layer located on a side of the anti-peeping layer away from the substrate, the touch layer includes a touch electrode, and an orthographic projection of the touch electrode on the substrate and an orthographic projection of the anti-peeping portion on the substrate are at least partially overlapped.

4. The display panel according to claim 3, characterized in that: The privacy protection portion further comprises a first electrode disposed in the direction of the first functional portion close to the substrate and a second electrode disposed in the direction of the first functional portion away from the substrate, wherein the orthographic projections of the first functional portion and the first electrode on the substrate are within the orthographic projection range of the second electrode on the substrate; Preferably, the orthographic projection of the second electrode of the anti-peeping portion on the substrate does not overlap with the orthographic projection of the second functional portion on the substrate; Preferably, at least part of the second electrode of the anti-peeping portion covers a side of the second functional portion away from the substrate; Preferably, a hollow space is provided in the second electrode, and part of the touch electrodes are located in the hollow space; Preferably, the touch electrode comprises a first touch electrode, a second touch electrode and a bridge electrode, the first touch electrode and the second touch electrode are arranged in the same layer, and the bridge electrode is arranged in the hollow space; Preferably, the first electrodes enclose a plurality of electrode openings, the first functional parts enclose a plurality of functional openings, the orthographic projections of the functional openings on the substrate cover the orthographic projections of the electrode openings on the substrate, and the second functional parts are located within the electrode openings and the functional openings; Preferably, the first touch electrode, the second touch electrode and the first electrode are arranged in the same layer.

5. The display panel according to claim 1, characterized in that: An insulating layer is provided between the anti-peeping layer and the light-emitting layer, the insulating layer includes a concave portion, the orthographic projection of the light-emitting area on the substrate is located within the orthographic projection of the concave portion on the substrate, and part of the non-peeping portion is provided in the concave portion; Preferably, the recess is arranged through the insulating layer; Preferably, along the direction from the substrate to the anti-peeping layer, the size of the non-anti-peeping portion in a first direction gradually decreases, and the first direction is perpendicular to the thickness direction of the substrate.

6. The display panel according to claim 1, characterized in that: The display panel further includes an encapsulation layer, and the encapsulation layer is disposed between the light-emitting layer and the anti-peeping layer; or, The anti-peep layer is arranged between the light-emitting layer and the encapsulation layer.

7. The display panel according to claim 1, characterized in that: The non-peeping portion further includes a third functional portion, the third functional portion is located on at least one side of the second functional portion, one side wall of the third functional portion contacts the first functional portion, and the other side wall contacts the second functional portion; The refractive index of the third functional portion is smaller than the refractive index of the first functional portion; Preferably, in a direction away from the substrate, a surface of the third functional portion facing away from the substrate is higher than a surface of the privacy protection portion facing away from the substrate; Preferably, the third functional portion encloses to form a receiving opening, and the second functional portion is located in the receiving opening; Preferably, the display panel further comprises a buffer layer located on one side of the anti-peep layer, and the second functional portion and the buffer layer are provided in the same layer and with the same material; Preferably, the non-peeping portion further comprises a first electrode located on a side of the second functional portion close to the substrate, and a second electrode located on a side of the second functional portion away from the substrate, and the second electrode covers a side of the third functional portion away from the substrate; Preferably, the second electrode is provided as a whole layer, and a portion of the second electrode is located between the buffer layer and the third functional portion.

8. The display panel according to claim 1, characterized in that: include; forming a light-emitting layer on a substrate, wherein the light-emitting layer includes a light-emitting area and a non-light-emitting area; forming a first conductive layer and a first functional material layer in sequence on a side of the light-emitting layer facing away from the substrate; Patterning the first functional material layer and the first conductive layer to form a first electrode and a first functional portion and an opening between the first electrode and the first functional portion; preparing a non-peeping portion in the opening; A second electrode is formed on a side of the first functional portion facing away from the substrate, and the first electrode, the first functional portion and the second electrode form an anti-peeping portion, the anti-peeping portion is arranged around the non-anti-peeping portion, the orthographic projection of the luminous area on the substrate is located within the orthographic projection of the non-anti-peeping portion on the substrate, and the orthographic projection of the anti-peeping portion on the substrate overlaps with the orthographic projection of the non-luminous area on the substrate; wherein the non-anti-peeping portion includes a second functional portion, and a refractive index of the second functional portion is greater than a refractive index of the first functional portion.

9. The preparation method according to claim 8, characterized in that: Before the step of sequentially forming a first conductive layer and a first functional material layer on a side of the light-emitting layer facing away from the substrate, the step includes: forming an insulating material layer on a side of the light-emitting layer facing away from the substrate; The step of patterning the first functional material layer and the first conductive layer to form a first electrode and a first functional portion and an opening between the first electrode and the first functional portion comprises: The opening penetrates the insulating material layer so that the insulating material layer forms an insulating layer; Preferably, the step of preparing the non-peep-proof portion in the opening includes: forming a third functional material layer at least in the opening and patterning the third functional material layer to form a third functional portion and a receiving opening located between the third functional portions; A second functional part is prepared at least in the receiving opening.

10. A display device, characterized in that: Comprising the display panel as claimed in any one of claims 1 to 7.

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