Anti-peeping display screen and electronic equipment

Abstract

The present application provides an anti-peeping display screen and an electronic device. The anti-peeping display screen includes a substrate, an OLED device layer and an encapsulation layer stacked in sequence. A plurality of pixels are arranged in an array in the OLED device layer, and the pixels emit light outward through pixel openings. By arranging an anti-peeping layer on the encapsulation layer, the anti-peeping layer includes a basic light absorbing layer and a flat layer. The basic light absorbing layer is provided with a plurality of first openings arranged in an array, each first opening corresponds to each pixel opening, and the flat layer covers the basic light absorbing layer to achieve the flattening of the anti-peeping layer. In this way, the basic light absorbing layer is arranged around the periphery of each pixel opening, and will not block the pixel opening. The basic light absorbing layer can absorb the large-angle light emitted from the pixel opening without affecting the small-angle light emission of the pixel opening, so as to realize the anti-peeping function of the anti-peeping display screen. In addition, the anti-peeping layer has a simple structure and a small thickness, does not affect the overall thickness of the anti-peeping display screen, and can achieve the thinness of the electronic device.

Description

Technical Field

[0001] The present application relates to the field of electronic equipment, and in particular to an anti-peeping display screen and electronic equipment. Background Art

[0002] With the development of technology, people are paying more and more attention to the privacy and security issues of electronic consumer products (such as mobile phones, tablets, etc.). In some scenarios, users need the display screen of the device to have a narrow viewing angle so that people around cannot observe the content displayed on the display screen, and hope that the display screen has an anti-peeping function.

[0003] In the prior art, a privacy film (such as a shutter array module) can be added to the display screen to filter out light at a large viewing angle and only retain light at a small angle under a normal viewing angle, so that other people at a large viewing angle cannot observe the content displayed on the display screen. However, the thickness of the existing privacy film is usually large, which increases the thickness of the device and is not conducive to the thin design of the device. Summary of the invention

[0004] The present application provides an anti-peeping display screen and an electronic device. The anti-peeping display screen can realize an anti-peeping function and has a small thickness, which is conducive to the lightweight and thinning of the electronic device.

[0005] One aspect of the present application provides an anti-peeping display screen, comprising: a substrate, an OLED device layer, an encapsulation layer and an anti-peeping layer, wherein the OLED device layer and the encapsulation layer are sequentially stacked on the substrate, and the anti-peeping layer is arranged on the encapsulation layer;

[0006] The OLED device layer array is arranged with multiple pixels, the anti-peep layer includes a basic light-absorbing layer and a flat layer, the basic light-absorbing layer is provided with multiple first openings arranged in an array, each first opening is opposite to the pixel opening of each pixel, and the flat layer covers the basic light-absorbing layer; wherein the basic light-absorbing layer can absorb light emitted by the corresponding pixel.

[0007] The anti-peeping display screen provided by the present application includes a substrate, an OLED device layer and an encapsulation layer stacked in sequence, wherein a plurality of pixels are arranged in an array in the OLED device layer, and the pixels emit light outward through pixel openings. By arranging an anti-peeping layer on the encapsulation layer, the anti-peeping layer includes a basic light-absorbing layer and a flat layer, and the basic light-absorbing layer is provided with a plurality of first openings arranged in an array, each first opening corresponds to each pixel opening, and the flat layer covers the basic light-absorbing layer to achieve the flattening of the anti-peeping layer. In this way, the basic light-absorbing layer is arranged around the periphery of each pixel opening, and will not block the pixel opening. The basic light-absorbing layer can absorb the large-angle light emitted from the pixel opening without affecting the small-angle light emission of the pixel opening, so as to realize the anti-peeping function of the anti-peeping display screen. In addition, the anti-peeping layer has a simple structure and a small thickness, which does not affect the overall thickness of the anti-peeping display screen, and can realize the thinning of the electronic device.

[0008] In a possible implementation, the basic light-absorbing layer includes a light-shielding layer, and the light-shielding layer is opaque to light.

[0009] By setting the basic light-absorbing layer as a light-shielding layer, the light-shielding layer is opaque and can absorb light of all colors, and can absorb light of large angles emitted by corresponding pixels, thereby realizing the anti-peeping function of the anti-peeping display screen. Pixels of different colors can all be provided with the same light-shielding layer, and the light-shielding layer can be a mesh-shaped integrated structure.

[0010] In a possible implementation, the basic light absorbing layer includes a filter layer, the color of the filter layer is different from the color of the corresponding pixel, and the filter layer is used to absorb the light emitted by the corresponding pixel.

[0011] By setting the basic light-absorbing layer as a filter layer, and the color of the filter layer is different from the color of the corresponding pixel, the large-angle light emitted by the pixel is absorbed by the corresponding light-shielding layer, thereby realizing the anti-peeping function of the anti-peeping display screen. Since the colors of the filter layers surrounding the pixels of different colors are different, the basic light-absorbing layer as a whole can be composed of multiple filter layers of different colors arranged in an array.

[0012] In a possible implementation manner, the difference between the distance from the center to the edge of the first opening and the distance from the center to the edge of the pixel opening is -1 μm to 3 μm.

[0013] In a possible implementation, the anti-peeping layer further includes a transparent first isolation layer, the first isolation layer is disposed on the encapsulation layer, and the basic light absorbing layer is disposed on the first isolation layer.

[0014] By setting a first isolation layer on the encapsulation layer, setting a basic light absorbing layer on the first isolation layer, and increasing the distance between the basic light absorbing layer and the OLED device, it is ensured that the basic light absorbing layer is located on the optical path of the large-angle light emitted by the pixel, and the basic light absorbing layer can effectively play a role. Among them, by setting the first isolation layer to be transparent, the light emitted by the pixel can pass through the first isolation layer to prevent the first isolation layer from affecting the light emission of the pixel and avoid affecting the light transmittance of the anti-peeping display screen.

[0015] In a possible implementation manner, the thickness of the first isolation layer is 8 μm-20 μm.

[0016] By setting the thickness of the first isolation layer between 8μm-20μm, it is ensured that the first isolation layer has sufficient thickness to ensure that the distance between the basic light absorbing layer and the OLED device is controlled within an appropriate range, and the thickness of the first isolation layer is avoided to be too large to prevent affecting the overall thickness of the anti-peep display screen.

[0017] In a possible implementation, the first isolation layer is a transparent ink layer.

[0018] In a possible implementation, the anti-peeping display screen further includes a touch layer, the touch layer covers the encapsulation layer, and the first isolation layer is disposed on the touch layer.

[0019] By covering the encapsulation layer with a touch layer, when the user touches the anti-peeping display screen, the touch layer will generate a touch signal, thereby realizing the touch function of the electronic device.

[0020] In a possible implementation, the anti-peeping layer further includes a high folding layer, the high folding layer is located on the encapsulation layer, the first isolation layer covers the high folding layer, and the refractive index of the high folding layer is higher than the refractive index of the first isolation layer;

[0021] Among them, the high-folding layer includes a plurality of high-folding portions arranged in an array, each high-folding portion is opposite to each pixel opening; the edge of the top surface of the high-folding portion has a focusing area, at least part of the focusing area is exposed in the first opening, and the focusing area is an arc surface protruding toward the outer periphery of the high-folding portion.

[0022] By arranging a high fold layer on the encapsulation layer, and arranging a plurality of high fold portions in an array and corresponding to each pixel opening in the high fold layer, the first isolation layer covers the high fold layer. By making the refractive index of the high fold layer greater than the refractive index of the first isolation layer, and setting the top surface edge of the high fold layer as an arc surface convex to the periphery, the arc surface forms a light-gathering area, so that the light transmitted to the light-gathering area can be refracted at the interface between the high fold layer and the first isolation layer, forming a small-angle light and emitting from the first opening of the basic light-absorbing layer. Thus, the light emission loss of the pixel is reduced, and the proportion of light emitted at a small angle is increased, so that the front view brightness of the anti-peeping display screen can be improved.

[0023] In a possible implementation manner, the high-refractive portion is a filter portion, and the color of the filter portion is the same as the color of the corresponding pixel.

[0024] By setting the high-folding portion as a filter portion of the same color as the corresponding pixel, the high-folding portion can absorb large-angle light emitted by pixels of other colors around it, so as to prevent cross-light and light leakage between adjacent pixels. In addition, the high-folding portion can also absorb light of other colors from the outside world to reduce the reflectivity of the anti-peeping display screen.

[0025] In a possible implementation, the touch layer has a plurality of second openings arranged in an array, each second opening is opposite to each pixel opening, the first isolation layer covers the touch layer and fills each second opening, and the refractive index of the touch layer is lower than that of the first isolation layer.

[0026] By opening a plurality of second openings arranged in an array on the touch layer and corresponding to each pixel opening, and making the refractive index of the touch layer lower than that of the first isolation layer, part of the high-angle light transmitted to the side wall of the second opening of the touch layer can be totally reflected at the interface between the first isolation layer and the touch layer to become low-angle light, thereby reducing the light loss of the pixel and improving the front-view brightness of the anti-peeping display screen.

[0027] In a possible implementation, the privacy protection layer further includes a second isolation layer and a first low-folding layer;

[0028] The touch layer is provided with a plurality of second openings arranged in an array, each second opening is directly opposite to each pixel opening, the second isolation layer covers the touch layer and fills each second opening, and the refractive index of the touch layer is lower than the refractive index of the second isolation layer;

[0029] The first low-fold layer covers the second isolation layer, the first low-fold layer is provided with a plurality of third openings arranged in an array, each third opening is directly opposite to each pixel opening, the first isolation layer covers the first low-fold layer and fills each third opening, and the refractive index of the first low-fold layer is lower than the refractive index of the first isolation layer.

[0030] By adding a second isolation layer and a first low-fold layer, the second isolation layer covers the touch layer and fills the second openings of the touch layer, and the first low-fold layer covers the second isolation layer and has a plurality of third openings arranged in an array and corresponding to the pixel openings. By making the refractive index of the touch layer lower than that of the second isolation layer, and the refractive index of the first low-fold layer lower than that of the first isolation layer, the interface between the second isolation layer and the touch layer, and the interface between the first isolation layer and the first low-fold layer can fully reflect part of the large-angle light emitted by the pixel, which can further reduce the light loss of the pixel and further improve the front view brightness of the anti-peeping display screen.

[0031] In a possible implementation, the anti-peeping display screen further includes an optical adhesive layer, a circular polarizer, and a cover plate, and the optical adhesive layer, the circular polarizer, and the cover plate are sequentially stacked on the anti-peeping layer.

[0032] In a possible implementation, the anti-peeping layer further includes a colored photoresist layer, the colored photoresist layer includes a plurality of photoresist portions arranged in an array, each photoresist portion is provided corresponding to each first opening, and the color of each photoresist portion is the same as the color of the corresponding pixel.

[0033] By setting a colored photoresist layer, each light-resisting portion of the colored photoresist layer corresponds to each first opening of the basic light-absorbing layer, and the color of each light-resisting portion is the same as the color of the corresponding pixel. The light-resisting portion can absorb light of other colors from the outside, reduce the reflectivity of the anti-peeping display screen, and improve the contrast of the anti-peeping display screen. It can also absorb large-angle light from other colored pixels around it, thereby preventing cross-light and light leakage.

[0034] In a possible implementation manner, each light blocking portion is filled in each first opening.

[0035] In a possible implementation, the anti-peeping layer further includes a second low-fold layer, the second low-fold layer covers the base light-absorbing layer and the sidewalls of each first opening, and the refractive index of the second low-fold layer is lower than the refractive index of the color photoresist layer;

[0036] The second low-folding layer is provided with a plurality of fourth openings, each fourth opening is located in each first opening, and each light-blocking portion is filled in each fourth opening.

[0037] By forming a second low-fold layer on the basic light-absorbing layer, a fourth opening is opened in the portion of the second low-fold layer located within each first opening of the basic light-absorbing layer, and each light-resisting portion is filled in each fourth opening. In addition, by making the refractive index of the second low-fold layer lower than the refractive index of the color light-resisting layer, part of the large-angle light emitted by the pixel can be refracted or totally reflected at the interface between the color light-resisting layer and the second low-fold layer, forming a small-angle light that can be emitted outward, thereby reducing the light loss of the pixel and improving the front-view brightness and anti-peeping effect of the anti-peeping display screen.

[0038] In a possible implementation, the anti-peep layer further includes a third low-fold layer, the third low-fold layer is provided with a plurality of fifth openings, each fifth opening is directly opposite to a pixel opening of each pixel, each light blocking portion is filled in each fifth opening, and the basic light absorbing layer is arranged on the third low-fold layer.

[0039] By forming a third low-fold layer, a plurality of fifth openings arranged in an array and corresponding to the openings of each pixel are opened on the third low-fold layer, each light-resisting portion of the color light-resisting layer is filled in each fifth opening, and the basic light-absorbing layer is arranged on the third low-fold layer. In addition, by making the refractive index of the third low-fold layer lower than the refractive index of the color light-resisting layer, part of the large-angle light emitted by the pixel can be refracted or totally reflected at the interface between the color light-resisting layer and the third low-fold layer, forming a small-angle light that can be emitted outward, so as to reduce the light loss of the pixel and improve the front view brightness and anti-peeping effect of the anti-peeping display screen.

[0040] In a possible implementation, the basic light absorption layer includes a first filter layer, and the color of the first filter layer is different from the color of the corresponding pixel.

[0041] In a possible implementation, the basic light absorbing layer further includes a second filter layer, which covers the first filter layer, and the color of the second filter layer is different from the color of the corresponding pixel, and the color of the second filter layer is different from the color of the first filter layer.

[0042] In a possible implementation manner, each light blocking portion extends outside the fifth opening and covers the third low-folding layer, and the basic light absorbing layer covers the light blocking portion.

[0043] In a possible implementation, the anti-peeping display screen further includes an optical adhesive layer and a cover plate, and the optical adhesive layer and the cover plate are sequentially stacked on the anti-peeping layer.

[0044] In a possible implementation, the anti-peeping display screen further includes an additional light absorbing layer, which is disposed on the light emitting side of the pixel, and is located on a side of the basic light absorbing layer facing the substrate;

[0045] The additional light absorbing layer is provided with a plurality of sixth openings arranged in an array, and the orthographic projections of the sixth openings on the flat layer cover the orthographic projections of the first openings on the flat layer.

[0046] An additional light absorbing layer is added between the OLED device and the basic light absorbing layer, and a plurality of sixth openings arranged in an array and corresponding to the pixel openings are opened on the additional light absorbing layer, so that the additional light absorbing layer is located on the optical path of the large-angle light of crosstalk between pixels. The large-angle light of crosstalk between pixels is absorbed by the additional light absorbing layer, thereby preventing crosstalk and light leakage between pixels.

[0047] In a possible implementation manner, a difference between a distance from a center to an edge of the sixth opening and a distance from a center to an edge of the pixel opening is 1 μm-6 μm.

[0048] In a possible implementation manner, the additional light absorbing layer is disposed on the encapsulation layer, and the first isolation layer covers the additional light absorbing layer.

[0049] By disposing an additional light absorbing layer on the encapsulation layer and making the first isolation layer cover the additional light absorbing layer, sufficient spacing is provided between the additional light absorbing layer and the basic light absorbing layer, ensuring that the additional light absorbing layer can block the optical path of large-angle light from adjacent pixels (which can crosstalk to the pixel), thereby ensuring that the additional light absorbing layer can function effectively.

[0050] A second aspect of the present application provides an electronic device, including a housing and the anti-peeping display screen as described above, wherein the anti-peeping display screen is mounted on the housing.

[0051] The electronic device provided by the present application includes a shell and an anti-peeping display screen mounted on the shell, and the anti-peeping display screen includes a substrate, an OLED device layer and an encapsulation layer stacked in sequence, and a plurality of pixels are arranged in an array in the OLED device layer, and the pixels emit light outward through the pixel openings. By arranging an anti-peeping layer on the encapsulation layer, the anti-peeping layer includes a basic light-absorbing layer and a flat layer, and the basic light-absorbing layer is provided with a plurality of first openings arranged in an array, each first opening corresponds to each pixel opening, and the flat layer covers the basic light-absorbing layer to achieve the flattening of the anti-peeping layer. In this way, the basic light-absorbing layer is arranged around the periphery of each pixel opening, and will not block the pixel opening. The large-angle light emitted from the pixel opening can be absorbed by the basic light-absorbing layer without affecting the small-angle light emission of the pixel opening, so as to realize the anti-peeping function of the anti-peeping display screen. In addition, the anti-peeping layer has a simple structure and a small thickness, does not affect the overall thickness of the anti-peeping display screen, and can achieve the thinness of the electronic device. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] Figure 1 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application;

[0053] Figure 2 for Figure 1 an exploded structural diagram of the electronic device shown;

[0054] Figure 3 It is a schematic diagram of the structure of the LAF membrane in the related art;

[0055] Figure 4 A schematic diagram of the structure of the anti-peeping display screen provided in Example 1 of the present application;

[0056] Figure 5 A schematic diagram of the structure of the anti-peeping display screen provided in Example 2 of the present application;

[0057] Figure 6 A schematic diagram of the structure of the anti-peeping display screen provided in Embodiment 3 of the present application;

[0058] Figure 7 A schematic diagram of the structure of the anti-peeping display screen provided in the fourth embodiment of the present application;

[0059] Figure 8 A schematic diagram of the structure of the anti-peeping display screen provided in Embodiment 5 of the present application;

[0060] Fig. 9 A schematic diagram of the structure of an anti-peeping display screen provided in Example 6 of the present application;

[0061] Fig.10 A schematic diagram of the structure of an anti-peeping display screen provided in Embodiment 7 of the present application;

[0062] Fig.11 A schematic diagram of the structure of another anti-peeping display screen provided in Embodiment 7 of the present application;

[0063] Fig.12 A schematic diagram of the structure of an anti-peeping display screen provided in Embodiment 8 of the present application;

[0064] Fig.13 This is an optical simulation comparison diagram of the anti-peeping display screen provided in an embodiment of the present application.

[0065] Description of reference numerals:

[0066] 1- Electronic equipment;

[0067] 100-display screen; 100a-anti-peeping display screen;

[0068] 110-substrate; 120-OLED device layer; 130-encapsulation layer; 140-touch layer; 150-peepproof layer; 160-optical adhesive layer; 170-circular polarizer; 180-cover plate; 190-additional light absorbing layer;

[0069] 111-TFT driving layer; 121-pixel definition layer; 122-OLED device; 131-first inorganic layer; 132-organic layer; 133-second inorganic layer; 141-second opening; 151-basic light absorption layer; 151a-light shielding layer; 151b-light filter layer; 152-flat layer; 153-first isolation layer; 154-high folding layer; 154a-high folding portion; 155-second isolation layer; 156-first low folding layer; 157-color light blocking layer; 157a-light blocking portion; 158-second low folding layer; 159-third low folding layer; 191-sixth opening;

[0070] 1221-anode layer; 1222-functional layer; 1223-cathode layer; 1511-first opening; 1512-first filter layer; 1513-second filter layer; 1541-light-gathering area; 1561-third opening; 1581-fourth opening; 1591-fifth opening;

[0071] 200-housing;

[0072] 210-middle frame; 220-back cover;

[0073] 211-middle plate portion; 212-frame portion;

[0074] 10-LAF film; 11-anti-peeping layer; 11a-prism; 12-support layer; 13-protective layer; 14-hardening layer. DETAILED DESCRIPTION

[0075] The terms used in the implementation section of this application are only used to explain the specific embodiments of this application and are not intended to limit this application.

[0076] The embodiment of the present application provides an electronic device, which can be a consumer electronic product. Exemplarily, the electronic device includes but is not limited to a mobile phone, a portable android device (PAD), a notebook computer (NoteBook Computer, referred to as NoteBook), an ultra-mobile personal computer (UMPC), a walkie-talkie, a netbook, a POS (Point of sales) machine, a personal digital assistant (PDA), a wearable device, a virtual reality (VR) device, an augmented reality (AR) device, etc.

[0077] Figure 1 This is a schematic diagram of the structure of an electronic device provided in an embodiment of the present application. Figure 1As shown, taking the electronic device 1 as a mobile phone as an example, the electronic device 1 may include a display screen 100 and a housing 200. One side surface of the display screen 100 is used to display image information, and the side surface of the display screen 100 is usually defined as its front side, and the other side surface opposite to its front side is its back side. The housing 200 is arranged around the side and back side of the display screen 100, and is used to support and fix the display screen 100 and provide protection. The front side of the display screen 100 is exposed outside the housing 200, so that the user can view the content displayed on the display screen 100, or perform input operations on the electronic device 1.

[0078] Figure 2 for Figure 1 An exploded view of the electronic device is shown. Figure 2 As shown, the housing 200 of the electronic device 1 may include a middle frame 210 and a back cover 220, wherein the middle frame 210 is connected between the display screen 100 and the back cover 220, the display screen 100 is supported on one side surface of the middle frame 210, and the back cover 220 is connected to the other side surface of the middle frame 210. The display screen 100 is usually mounted on the middle frame 210 as a whole to ensure the strength and stability of the display screen 100 and meet the use requirements of the display screen 100. The back cover 220 is usually connected to the middle frame 210 in an overlapping manner, and the middle frame 210 and the back cover 220 together form a receiving cavity, and the receiving cavity is used to install circuit boards, batteries, cameras, microphones (circuit boards, batteries, cameras, microphones are not shown in the figure) and other devices.

[0079] The middle frame 210 may include a middle plate portion 211 and a frame portion 212. The middle plate portion 211 is located between the display screen 100 and the back cover 220, and is usually arranged parallel to the display screen 100 and the back cover 220. The frame portion 212 is arranged around the periphery of the middle plate portion 211. The frame portion 212 may be perpendicular to the plate surface of the middle plate portion 211 and extend to both sides of the middle plate portion 211. Exemplarily, the frame portion 212 and the middle plate portion 211 may be an integrally formed structure.

[0080] The display screen 100 is usually mounted on the middle plate portion 211 of the middle frame 210 in an integrally bonded manner. For example, the display screen 100 is bonded to the middle plate portion 211 as a whole. The middle plate portion 211 supports the display screen 100, which ensures that the display screen 100 is supported stably and firmly, and that the display screen 100 has sufficient strength to meet the use requirements of the display screen 100 being frequently pressed. The frame portion 212 is arranged around the display screen 100 to protect the side of the display screen 100, helping the display screen 100 to resist risk scenarios such as collision and falling, and protecting the display screen 100 from damage.

[0081] The edge of the back cover 220 is connected to the frame portion 212 of the middle frame 210, for example, the edge of the back cover 220 is bonded to the frame portion 212. There is a gap between the middle plate portion 211 of the middle frame 210 and the back cover 220, and the gap forms a receiving cavity as described above, so that a device can be installed in the receiving cavity between the middle plate portion 211 of the middle frame 210 and the back cover 220.

[0082] It should be stated that Figure 1 and Figure 2 The electronic device 1 shown in the figure is a straight-type electronic device, and specifically takes the electronic device 1 as a straight-type mobile phone as an example. In other embodiments, the electronic device 1 may also be a foldable electronic device, for example, the electronic device 1 may be a foldable mobile phone.

[0083] When the electronic device 1 is a foldable electronic device, the display screen 100 carried by the electronic device 1 is a foldable display screen 100, and the display screen 100 can be made of flexible material. In other words, the display screen 100 is a flexible screen, so that the display screen 100 has the ability to bend and deform, so that the display screen 100 can switch between a folded state and an unfolded state.

[0084] Regardless of whether it is a straight-type electronic device or a foldable electronic device, in the application of the electronic device 1, in some scenarios, for example, when processing private information, processing work content involving commercial secrets, entering account passwords and other private scenarios, the user hopes that the information displayed by the electronic device 1 cannot be known by other users around. At this time, the electronic device 1 needs to have an anti-peeping function.

[0085] In order to make the display screen 100 of the electronic device 1 have an anti-peeping function, in the related art, an anti-peeping film can be attached to the display screen 100 of the electronic device 1, so as to adjust the light output angle of the display screen 100 through the anti-peeping film to achieve an anti-peeping effect. At present, the commonly used anti-peeping film on the market is mainly a Louver Array Film (LAF).

[0086] Figure 3 Schematic diagram of the structure of the LAF membrane in the related art. Figure 3As shown, the core structural layer of the LAF film 10 is the anti-peeping layer 11, on which a plurality of prisms 11a are arranged, and the spacing between adjacent prisms 11a is very small (similar to a shutter structure), so that only light within a small angle range can pass through, such as the 50° range shown in the figure, to achieve an anti-peeping effect. In addition, in order to support and protect the anti-peeping layer 11, support layers 12 are provided on both sides of the anti-peeping layer 11, and the material constituting the support layer 12 is, for example, polyethylene terephthalate (PET), and protective layers 13 are provided on both sides of the support layer 12, and the material constituting the protective layer 13 is, for example, polyethylene (PE for short). A hardening layer 14 can also be provided between the support layer 12 and the protective layer 13 on the light-emitting side of the anti-peeping layer 11 to enhance the strength of the LAF film 10. Among them, an adhesive layer (not shown in the figure) can be provided between adjacent film layers in the LAF film 10, and each film layer is bonded together in sequence through the adhesive layer.

[0087] However, due to the presence of film layers such as the protective layer 13 and the adhesive layer in the LAF film 10, the thickness of the LAF film 10 is relatively large, and the thickness of the LAF film 10 is generally around 200μm-400μm. Therefore, the LAF film 10 will increase the thickness of the display screen 100, and cannot be used in thin electronic devices 1, and will also increase the production cost of the electronic device 1. In addition, the structure of the anti-peep layer 11 that controls the viewing angle in the LAF film 10 is complex, and the current process cannot directly apply the anti-peep layer 11 to the display screen 100 of a thin product. In addition, since the LAF film 10 has many stacked film layers, it has a certain impact on the light transmittance of the display screen 100. If the brightness of the display screen 100 is to be increased, the power consumption of the electronic device 1 will increase.

[0088] In view of this, the embodiment of the present application improves the display screen 100 carried by the electronic device 1, and sets the display screen 100 as an anti-peeping display screen. The anti-peeping display screen includes a substrate, an OLED device layer and an encapsulation layer stacked in sequence, and a plurality of pixels are arranged in an array in the OLED device layer, and the pixels emit light outward through the pixel openings. By arranging an anti-peeping layer on the encapsulation layer, the anti-peeping layer includes a basic light-absorbing layer and a flat layer, and the basic light-absorbing layer is provided with a plurality of first openings arranged in an array, each first opening corresponds to each pixel opening, and the flat layer covers the basic light-absorbing layer to achieve the flattening of the anti-peeping layer. In this way, the basic light-absorbing layer is arranged around the periphery of each pixel opening, and will not block the pixel opening. The large-angle light emitted from the pixel opening can be absorbed by the basic light-absorbing layer without affecting the small-angle light emission of the pixel opening, so as to realize the anti-peeping function of the anti-peeping display screen. In addition, the anti-peeping layer has a simple structure and a small thickness, does not affect the overall thickness of the anti-peeping display screen, and can achieve the thinning of the electronic device 1.

[0089] Embodiment 1

[0090] Figure 4 This is a schematic diagram of the structure of the anti-peeping display screen provided in Example 1 of the present application. Figure 4 As shown, in this embodiment, the anti-peeping display screen 100a is an OLED (Organic Light-Emitting Diode) display screen 100, that is, the display module carried in the anti-peeping display screen 100a is an OLED display module.

[0091] Specifically, the OLED display module of the anti-peeping display screen 100a may include a substrate 110 and an OLED device layer 120. The substrate 110 is located at the bottom layer of the OLED display module, and is mainly used to support the structural layer located thereon to ensure the overall structural strength and stability of the anti-peeping display screen 100a. The OLED device layer 120 is disposed on the substrate 110, and the OLED device layer 120 is used to emit light so that the anti-peeping display screen 100a displays an image.

[0092] As a basic supporting structure, the substrate 110 has a certain thickness, and the structural strength meets the requirements, and the substrate 110 has good barrier properties to water vapor in the environment. Exemplarily, the material of the substrate 110 can be quartz, glass, resin, metal, etc., wherein the resin includes but is not limited to polymethyl methacrylate (PMMA for short), polyethylene terephthalate (PET for short), polyethylene naphthalate di formic acid glycol ester (PBN for short), polycarbonate (PC for short), etc. Among them, for a bendable flexible screen, the substrate 110 can be made of polyimide (PI for short).

[0093] The OLED device layer 120 has a plurality of pixels arranged in an array, and the pixels may include, for example, red pixels, green pixels, and blue pixels, and each adjacent group of red pixels, green pixels, and blue pixels may constitute a pixel unit. By controlling the luminous flux of pixels of different colors in each pixel unit, in other words, by adjusting the luminous ratio of pixels of different colors in each pixel unit, each pixel unit displays a color, and the colors displayed by all pixel units together constitute the image displayed by the anti-peeping display screen 100a.

[0094] It should be noted that in this embodiment and the following embodiments, the cross-sectional structure of a certain pixel (smallest unit) in the anti-peeping display screen 100a is mainly shown.

[0095] The OLED device layer 120 includes a pixel definition layer 121 and a plurality of OLED devices 122. The pixel definition layer 121 is used to define the position, shape and size of the pixel. The pixel definition layer 121 may be, for example, a mesh structure. The pixel definition layer 121 surrounds a plurality of pixel openings arranged in an array. Each OLED device 122 is arranged corresponding to each pixel opening surrounded by the pixel definition layer 121. The pixel definition layer 121 surrounds the periphery of each OLED device 122. Each OLED device 122 is, for example, arranged in an array on the substrate 110. Each OLED device 122 emits light to form each pixel.

[0096] The pixel definition layer 121 should be able to block light, so as to prevent light leakage from the pixels, prevent cross-color and short circuit between adjacent pixels, and ensure the display effect of the anti-peeping display screen 100a on the basis of defining the position, shape and size of the pixels. Exemplarily, the pixel definition layer 121 can be made of a light-shielding material, for example, the pixel definition layer 121 is made of a material such as black acrylic or polyimide.

[0097] The OLED device 122 generally includes an anode layer 1221, a functional layer 1222, and a cathode layer 1223 sequentially stacked on the substrate 110, and the anode layer 1221, the functional layer 1222, and the cathode layer 1223 form a sandwich structure. The anode layer 1221 is generally a metal layer. For example, the material constituting the anode layer 1221 may include a single substance or an alloy of metal elements such as aluminum, magnesium, silver, chromium, gold, platinum, nickel, copper, and tungsten. The cathode layer 1223 is generally made of a transparent material so that the cathode layer 1223 can transmit the light emitted by the functional layer 1222 to avoid the loss of light flux. The material constituting the cathode layer 1223 is, for example, indium tin oxide (ITO).

[0098] The functional layer 1222 includes a hole transport layer (HTL), a light-emitting layer (EL) and an electron transport layer (ETL) stacked in sequence (the hole transport layer, the light-emitting layer and the electron transport layer are not shown in the figure). The voltage between the anode layer 1221 and the cathode layer 1223 acts on the functional layer 1222, and the positive holes and the cathode charges combine in the light-emitting layer to make the light-emitting layer emit light. Depending on the materials constituting the light-emitting layer, different light-emitting layers can produce the three primary colors of red, green and blue, so that the corresponding OLED devices 122 form red pixels, green pixels and blue pixels respectively.

[0099] Exemplarily, when forming the OLED device layer 120, the anode layer 1221 may be formed on the substrate 110 first, and then the pixel definition layer 121 may be formed on the substrate 110. Each pixel opening surrounded by the pixel definition layer 121 is provided corresponding to each anode layer 1221, and the opening area of ​​the pixel opening may be smaller than the surface area of ​​the anode layer 1221. The pixel definition layer 121 covers the edge of the anode layer 1221. Then, the functional layer 1222 and the cathode layer 1223 are sequentially formed in the pixel opening surrounded by the pixel definition layer 121, and the functional layer 1222 and the cathode layer 1223 are sequentially stacked on the anode layer 1221 to form the OLED device 122.

[0100] Furthermore, the thickness of the pixel definition layer 121 may be greater than the thickness of the OLED device 122, the functional layer 1222 is completely contained within the pixel opening surrounded by the pixel definition layer 121, and the top surface of the pixel definition layer 121 is higher than the top surface of the functional layer 1222 to ensure that adjacent pixels are completely separated by the pixel definition layer 121 to avoid crosstalk between adjacent pixels.

[0101] Continue to refer to Figure 4 A TFT (Thin Film Transistor) driving layer 111 is also provided on the substrate 110. The TFT driving layer 111 includes a plurality of thin film transistors provided on the substrate 110. The thin film transistors can be connected to the OLED device 122 to drive the OLED device 122 to work. In other words, the thin film transistors are used to turn pixels on and off.

[0102] Taking the pixel structure shown in the figure as an example, the anode layer 1221 of each pixel is independently separated, which is equivalent to that each pixel is composed of an independent OLED device 122. At this time, the pixel driving mode can be active driving (active driving), and each pixel is configured with a thin film transistor, and the thin film transistor array is arranged, and each pixel can emit light independently.

[0103] In other examples, the anode layer 1221 and the cathode layer 1223 of the OLED device 122 may be arranged in a longitudinal and transverse cross-arrangement, the functional layer 1222 is arranged corresponding to the intersection of each anode layer 1221 and each cathode layer 1223, the thin film transistor is arranged at one end of the anode layer 1221 and the cathode layer 1223, each row (column) of the anode layer 1221 (or each column (row) of the cathode layer 1223) is controlled by the same thin film transistor, the OLED device 122 is scanned row by row and column by column in sequence, and each pixel emits light in turn.

[0104] In addition, refer to Figure 4As shown, in order to protect the OLED device 122, an encapsulation layer 130 is usually provided on the OLED device layer 120, and the encapsulation layer 130 is used to isolate water vapor and oxygen in the external environment to prevent water / oxygen from penetrating into the OLED device 122 and affecting its life. Among them, the encapsulation layer 130 can be implemented by an inorganic / organic multiple alternating thin film structure. The main function of the inorganic layer is to block water and oxygen to prevent water vapor or oxygen from invading the OLED device 122 and causing the light to dim. The thickness of the organic layer is usually large, which helps to flatten the surface of the substrate 110, and can cover the contamination particles introduced during the film layer molding process. In addition, for flexible screens, the organic layer can also relieve the stress of the adjacent inorganic layer when the anti-peep display screen 100a is bent.

[0105] Exemplarily, the encapsulation layer 130 may include a first inorganic layer 131, an organic layer 132, and a second inorganic layer 133 stacked in sequence. The material used for the first inorganic layer 131 and the second inorganic layer 133 is, for example, one of SiNx, SiOx, SiON, or Al2O3. The material constituting the first inorganic layer 131 and the material constituting the second inorganic layer 133 may be the same or different. The first inorganic layer 131 and the second inorganic layer 133 may be deposited by processes such as CVD (Chemical Vapor Deposition), ALD (Atomic layer deposition), or PVD (Physical Vapor Deposition). The material used for the organic layer 132 may be one of acrylate, hexamethyldisiloxane, polyacrylate, polycarbonate, and polystyrene, or other materials with similar properties. The organic layer 132 may be formed by processes such as inkjet printing (IJP for short) or CVD.

[0106] The OLED display module may further include a touch layer 140, which covers the encapsulation layer 130. The touch layer 140 is used to implement the touch function of the electronic device 1. When the user touches the anti-peeping display screen 100a, a touch signal is generated. After the touch signal is received by the controller in the electronic device 1, the touch position is detected, and a signal is input according to the touch position to implement the touch operation of the electronic device 1.

[0107] Continue to refer to Figure 4In the anti-peeping display screen 100a, an anti-peeping layer 150 is further provided on the OLED display module. In other words, an anti-peeping layer 150 is further provided on the encapsulation layer 130. Exemplarily, in this embodiment, the anti-peeping layer 150 may cover the touch layer 140. The anti-peeping layer 150 is used to adjust the light emission angle range of each pixel in the OLED display module. For example, the light emission angle range of each pixel is 0°-50° (the light emission angle completely perpendicular to the anti-peeping display screen 100a is defined as 0° here), so that the content displayed on the anti-peeping display screen 100a is visible only within a small viewing angle range (for example, 0°-50°), and the content on the anti-peeping display screen 100a cannot be observed from the side of the electronic device 1, so as to realize the anti-peeping function of the anti-peeping display screen 100a.

[0108] The anti-peeping layer 150 may include a basic light absorbing layer 151 and a flat layer 152. The basic light absorbing layer 151 is disposed on the encapsulation layer 130. The basic light absorbing layer 151 is provided with a plurality of first openings 1511, which are arranged in an array. Each first opening 1511 corresponds to a pixel opening of each pixel. In other words, the basic light absorbing layer 151 exposes each pixel opening and surrounds the periphery of each pixel opening. The flat layer 152 covers the basic light absorbing layer 151. The flat layer 152 is used to flatten the anti-peeping layer 150 to form a flat anti-peeping layer 150, which is convenient for setting the film layer on the anti-peeping layer 150, and also helps to improve the overall flatness of the anti-peeping display screen 100a, and improve the structural strength and stability of the anti-peeping display screen 100a.

[0109] The basic light absorption layer 151 can absorb the light emitted by the corresponding pixel. In other words, for a certain pixel, the basic light absorption layer 151 surrounding the periphery of the sub-pixel can absorb the light emitted by the sub-pixel. Figure 4 For example, light with an angle of 0°-50° can be emitted from the first opening 1511 of the basic light absorbing layer 151, and a user at a small viewing angle (the viewing angle is roughly perpendicular to the anti-peeping display screen 100a) can receive the small-angle light emitted by the pixel, and the user at a small viewing angle can see the content displayed on the anti-peeping display screen 100a; while the large-angle light emitted by the pixel ( Figure 4 As shown by the dotted arrow in the figure, for example, light with an angle greater than 50° is transmitted to the basic light absorbing layer 151 and absorbed by the basic light absorbing layer 151. Other people at a large viewing angle (for example, the angle between the viewing angle and the perpendicular line of the anti-peeping display screen 100a is greater than 50°) cannot receive the light emitted by the pixel, and other people at a large viewing angle cannot see the content displayed on the anti-peeping display screen 100a.

[0110] Taking the red pixel as an example, the basic light absorption layer 151 surrounding the red pixel can absorb the red light emitted by the red pixel. In other words, the basic light absorption layer 151 surrounding the red pixel cannot transmit the red light. The small-angle red light emitted by the red pixel is emitted through the corresponding first opening 1511 of the basic light absorption layer 151, and the user at a small viewing angle can receive the red light. The large-angle red light emitted by the red pixel is emitted to the basic light absorption layer 151 surrounding its periphery, and the large-angle red light is absorbed by the basic light absorption layer 151, and other people at a large viewing angle cannot receive the red light.

[0111] Therefore, by arranging the anti-peeping layer 150 on the OLED display module, in other words, arranging the anti-peeping layer 150 on the light-emitting side of the OLED display module, the small-angle light emitted by the pixel can be emitted through the first opening 1511 opened by the basic light-absorbing layer 151, while the large-angle light emitted by the pixel is transmitted to the basic light-absorbing layer 151 and absorbed by the basic light-absorbing layer 151. Thus, the content displayed by the anti-peeping display screen 100a is visible to users at a small viewing angle, but invisible to other people at a large viewing angle, thereby realizing the anti-peeping function of the anti-peeping display screen 100a.

[0112] Continue to refer to Figure 4 On the basis of setting the basic light absorbing layer 151 and the flat layer 152, the anti-peeping layer 150 can also include a first isolation layer 153, and the first isolation layer 153 is arranged on the encapsulation layer 130. In this embodiment, the first isolation layer 153 can cover the touch layer 140, and the basic light absorbing layer 151 is arranged on the first isolation layer 153.

[0113] By providing the first isolation layer 153, the distance between the basic light absorbing layer 151 and the OLED device 122 is increased, and in the thickness direction of the anti-peeping display screen 100a, a sufficient distance is ensured between the basic light absorbing layer 151 and the pixel definition layer 121 arranged around the periphery of the functional layer 1222, so as to ensure that the basic light absorbing layer 151 is located on the optical path of the large-angle light emitted by the pixel (for example, light greater than 50°), so as to avoid the basic light absorbing layer 151 avoiding the optical path of the large-angle light emitted by the pixel due to the basic light absorbing layer 151 being too close to the OLED device 122, causing the basic light absorbing layer 151 to fail to function effectively.

[0114] The first isolation layer 153 may be transparent, and the light emitted by the pixel may pass through the first isolation layer 153 and be emitted from the first opening 1511 opened in the basic light absorption layer 151, or be transmitted to the basic light absorption layer 151 and absorbed by the basic light absorption layer 151, so as to prevent the first isolation layer 153 from affecting the light emission of the pixel and avoid affecting the light transmittance of the anti-peeping display screen 100a. Exemplarily, the first isolation layer 153 may be a transparent ink layer, and the first isolation layer 153 may be printed on the encapsulation layer 130 (for example, on the surface of the encapsulation layer 130) by inkjet printing to form the first isolation layer 153.

[0115] Exemplarily, the thickness of the first isolation layer 153 may be in the range of 8 μm-20 μm. In this way, the first isolation layer 153 can be ensured to have a sufficient thickness, ensuring that the first isolation layer 153 can control the distance between the basic light absorbing layer 151 and the OLED device 122 within a suitable range; and the first isolation layer 153 is prevented from being too thick, which can prevent the first isolation layer 153 from affecting the overall thickness of the anti-peeping display screen 100a, so that the anti-peeping display screen 100a can be applied to the thin design of the electronic device 1.

[0116] For example, the thickness of the first isolation layer 153 may be 9 μm, 10 μm, 11 μm, 12 μm, 13 μm, 14 μm, 15 μm, 16 μm, 17 μm, 18 μm, 19 μm, etc.

[0117] Reference Figure 4 As shown, in this embodiment, the basic light absorption layer 151 is directly formed on the first isolation layer 153, the flat layer 152 covers the basic light absorption layer 151 and fills the first opening 1511 of the basic light absorption layer 151, and the portion of the flat layer 152 located in the first opening 1511 can be formed on the first isolation layer 153. At this time, the basic light absorption layer 151 directly formed on the first isolation layer 153 can have a certain thickness, and the thickness of the basic light absorption layer 151 can be in the range of 0.5μm-5μm, for example, the thickness of the basic light absorption layer 151 is 1μm, 1.5μm, 2μm, 2.5μm, 3μm, 3.5μm, 4μm, 4.5μm, etc. The thickness of the flat layer 152 should be greater than the thickness of the base light absorbing layer 151 to ensure that the flat layer 152 can completely cover the base light absorbing layer 151. The thickness of the flat layer 152 may be in the range of 2 μm-6 μm. For example, the thickness of the flat layer 152 is 2.5 μm, 3 μm, 3.5 μm, 4 μm, 4.5 μm, 5 μm, 5.5 μm, etc.

[0118] Exemplarily, a whole layer of the basic light absorbing layer 151 can be coated on the first isolation layer 153 first, and then, by exposure and development, a plurality of array-arranged first openings 1511 are etched on the basic light absorbing layer 151. For a basic light absorbing layer 151 having a certain thickness, the first openings 1511 formed are usually inverted trapezoids due to the conditions of the etching process, and the cone angle of the basic light absorbing layer 151 at the bottom end of the first opening 1511 (the end close to the first isolation layer 153) can be 30°-85°. The flat layer 152 can be made of an optical resin material, and a resin layer can be coated on the basic light absorbing layer 151 by spin coating, and the resin layer covers the basic light absorbing layer 151 and fills each first opening 1511 to form a flat layer 152.

[0119] In order to limit the light emission angle of the anti-peeping display screen 100a to a small angle range, the opening area of ​​the first opening 1511 opened by the basic light absorbing layer 151 cannot be too large, and the first opening 1511 can be set to match the pixel opening, and the shape of the first opening 1511 can be roughly consistent with the shape of the pixel opening, and the opening area of ​​the first opening 1511 can be roughly consistent with the opening area of ​​the pixel opening. For the basic light absorbing layer 151 set on the first isolation layer 153, since there is a sufficient distance between the basic light absorbing layer 151 and the OLED device 122, the opening area of ​​the first opening 1511 of the basic light absorbing layer 151 can be slightly larger than the opening area of ​​the pixel opening, and can be designed according to the anti-peeping angle required by the anti-peeping layer 150 (the angle range of light that the anti-peeping layer 150 needs to pass through).

[0120] For example, the difference between the distance from the center to the edge of the first opening 1511 on the basic light absorbing layer 151 and the distance from the center to the edge of the pixel opening can be between -1μm and 3μm. In other words, the opening area of ​​the first opening 1511 can also be slightly smaller than the opening area of ​​the pixel opening, allowing a certain error when the basic light absorbing layer 151 and the pixel definition layer 121 are each formed, which also helps to reduce the light output angle range of the anti-peeping display screen 100a and enhance the anti-peeping effect of the anti-peeping display screen 100a.

[0121] For example, the difference between the center-to-edge distance of the first opening 1511 of the base light absorbing layer 151 and the center-to-edge distance of the pixel opening may be -0.5 μm, 0 μm, 0.5 μm, 1.0 μm, 1.5 μm, 2.0 μm, 2.5 μm, etc.

[0122] As for the specific arrangement of the basic light absorbing layer 151, in some embodiments, the basic light absorbing layer 151 may include a light shielding layer 151a, which is opaque, that is, the light shielding layer 151a can absorb light of all colors, and the light shielding layer 151a can absorb red light emitted by red pixels, green light emitted by green pixels, and blue light emitted by blue pixels. At this time, pixels of different colors can be provided with the same light shielding layer 151a, and for each pixel arranged in an array, the light shielding layer 151a can be a mesh-shaped integrated structure.

[0123] For the light shielding layer 151a serving as the basic light absorbing layer 151, the light shielding layer 151a may be made of a light shielding material. For example, the light shielding layer 151a may be a black matrix (BM for short). The materials used to make the black matrix may include photosensitive resin, pigment, solvent and other components.

[0124] In other embodiments, the basic light absorption layer 151 may include a filter layer 151b, and the color of the filter layer 151b is different from the color of the corresponding pixel. In this way, when the large-angle light emitted by the pixel is transmitted to the filter layer 151b, the filter layer 151b cannot transmit the light, but absorbs the large-angle light emitted by the pixel, thereby realizing the anti-peeping function of the anti-peeping display screen 100a.

[0125] Taking the red pixel as an example, for the filter layer 151b as the basic light absorption layer 151 and arranged around the red pixel, the filter layer 151b can be set as a filter layer 151b of a color other than red, for example, the filter layer 151b arranged around the red pixel is a green filter layer or a blue filter layer. In this way, corresponding to pixels of different colors, the basic light absorption layer 151 often needs to be set as a filter layer 151b of different colors, that is, the basic light absorption layer 151 arranged around the pixels of different colors has different colors. For the anti-peeping display screen 100a including multiple array-arranged pixels, the basic light absorption layer 151 in the anti-peeping display screen 100a can be composed of multiple array-arranged filter layers 151b of different colors spliced ​​together.

[0126] Continue to refer to Figure 4 As shown, in the anti-peeping display screen 100a of this embodiment, an optical adhesive layer 160, a circular polarizer 170 and a cover plate 180 are further provided on the anti-peeping layer 150, and the optical adhesive layer 160, the circular polarizer 170 and the cover plate 180 are sequentially stacked on the flat layer 152 of the anti-peeping layer 150.

[0127] The optical adhesive layer 160 is used to bond the circular polarizer 170 and the cover plate 180 to the anti-peeping layer 150, which can ensure the connection strength between the circular polarizer 170 and the cover plate 180, and the optical adhesive layer 160 has a high light transmittance and will not affect the light transmittance of the anti-peeping display screen 100a. The circular polarizer 170 is used to solve the problem of reflection of the external ambient light by the anti-peeping display screen 100a, and improve the contrast of the anti-peeping display screen 100a in a bright environment. The cover plate 180 is located on the outer surface of the entire anti-peeping display screen 100a, and is used to protect the anti-peeping layer 150 and the OLED display module below it, and prevent impurities such as water vapor and dust in the external environment from entering the anti-peeping display screen 100a, so as not to affect the OLED device 122, and the cover plate 180 can improve the overall structural strength of the anti-peeping display screen 100a, and ensure the reliability of the anti-peeping display screen 100a.

[0128] Embodiment 2

[0129] Figure 5 This is a schematic diagram of the structure of the anti-peeping display screen provided in the second embodiment of the present application. Figure 5 As shown, similar to the first embodiment, the anti-peeping display screen 100a provided in the second embodiment also includes an OLED display module and an anti-peeping layer 150 stacked on the OLED display module. The structure of the OLED display module is the same as that of the OLED display module in the first embodiment, and the anti-peeping layer 150 in the second embodiment also includes a basic light absorbing layer 151 and a flat layer 152. The basic light absorbing layer 151 is arranged on the encapsulation layer 130 of the OLED display module. When the OLED display module has a touch layer 140, the basic light absorbing layer 151 can be arranged on the touch layer 140, and the flat layer 152 covers the basic light absorbing layer 151, which will not be described in detail here.

[0130] In addition, similar to the first embodiment, the anti-peeping layer 150 of this embodiment also includes a first isolation layer 153, the first isolation layer 153 is arranged on the OLED display module, and the basic light absorption layer 151 is arranged on the first isolation layer 153. Specifically, in this embodiment, the first isolation layer 153 can cover the touch layer 140 of the OLED display module, the basic light absorption layer 151 is directly formed on the first isolation layer 153, the flat layer 152 covers the basic light absorption layer 151 and fills the first opening 1511 of the basic light absorption layer 151, and the part of the flat layer 152 located in the first opening 1511 is formed on the first isolation layer 153.

[0131] Reference Figure 5As shown, on the basis of the first isolation layer 153, the basic light absorption layer 151 and the flat layer 152 being provided on the anti-peeping layer 150, in this embodiment, the anti-peeping layer 150 further includes a high folding layer 154, and the high folding layer 154 is located on the encapsulation layer 130 of the OLED display module. For example, the high folding layer 154 is formed on the touch layer 140 of the OLED display module. The first isolation layer 153 covers the high folding layer 154, and the high folding layer 154 includes a plurality of high folding portions 154a arranged in an array, each high folding portion 154a is arranged directly opposite to each pixel opening, and the first isolation layer 153 covers each high folding portion 154a.

[0132] Taking the thickness of the first isolation layer 153 as 8μm-20μm as an example, in order to make the first isolation layer 153 completely cover each high-folding portion 154a, the thickness of each high-folding portion 154a can be set between 2μm-8μm, for example, the thickness of the high-folding portion 154a can be 3μm, 4μm, 5μm, 6μm, 7μm, etc. The high-folding layer 154 can be made of optical resin material. When forming the high-folding layer 154 on the touch layer 140, the high-folding layer 154 can be coated to form a whole layer first, and then, after exposure and development processes, the high-folding layer 154 is patterned into a plurality of high-folding portions 154a arranged in an array.

[0133] The refractive index of the high-fold layer 154 is higher than that of the first isolation layer 153. Exemplarily, the refractive index of the high-fold layer 154 may be in the range of 1.56-1.80, for example, the refractive index of the high-fold layer 154 is 1.58, 1.60, 1.62, 1.64, 1.66, 1.68, 1.70, 1.72, 1.74, 1.76, 1.78, etc. The refractive index of the first isolation layer 153 may be in the range of 1.4-1.55, for example, the refractive index of the first isolation layer 153 may be 1.42, 1.44, 1.46, 1.48, 1.50, 1.52, 1.54, etc.

[0134] And, refer to Figure 5, the edge of the top surface (the side surface away from the first isolation layer 153) of the high-folding portion 154a has a light-gathering area 1541, at least part of the light-gathering area 1541 is exposed in the first opening 1511 of the basic light-absorbing layer 151, and the light-gathering area 1541 is an arc surface protruding toward the outer periphery of the high-folding portion 154a. In this way, similar to the first embodiment, the small-angle light (indicated by the small solid arrow in the figure) emitted by the pixel can sequentially pass through the high-folding layer 154 and the first isolation layer 153, and pass through the first opening 1511 of the basic light-absorbing layer 151 to irradiate outward; the large-angle light (indicated by the dotted arrow in the figure) emitted by the pixel is transmitted to the basic light-absorbing layer 151 and absorbed by the basic light-absorbing layer 151. On this basis, part of the larger-angle light emitted by the pixel (indicated by the large solid arrow in the figure) is transmitted to the focusing area 1541 of the high-refractive portion 154a, and is refracted at the interface between the high-refractive portion 154a and the first isolation layer 153, and becomes a small-angle light after refraction. The small-angle light can pass through the first opening 1511 of the basic light-absorbing layer 151 and irradiate outward.

[0135] With such a configuration, part of the high-angle light transmitted to the light-collecting area 1541 of the high-folding layer 154 can be refracted through the interface between the high-folding layer 154 and the first isolation layer 153 to form small-angle light, which is emitted from the first opening 1511 of the basic light-absorbing layer 151. In this way, the light emission loss of the pixel is reduced, the light emission efficiency of the pixel is improved, and since the proportion of small-angle light emission of the pixel is increased, the front-view brightness of the anti-peeping display screen 100a can be improved, and the display effect of the anti-peeping display screen 100a can be improved.

[0136] Among them, the surface area of ​​the high-folding portion 154a can be basically consistent with the opening area of ​​the first opening 1511 of the basic light absorbing layer 151, or the surface area of ​​the high-folding portion 154a can be slightly larger than the opening area of ​​the first opening 1511, so that the high-folding portion 154a can basically cover the first opening 1511, and the focusing area 1541 at the edge of the high-folding portion 154a basically corresponds to the edge of the first opening 1511, so as to increase the light exit area of ​​the small-angle light after refracting through the focusing area 1541 of the high-folding portion 154a, so that the light refracted after passing through the focusing area 1541 covers the edge of the first opening 1511 of the basic light absorbing layer 151 as much as possible, so as to ensure that the high-folding portion 154a plays an effective role.

[0137] Exemplarily, each high-folding portion 154a can be set as a filter portion, and the color of each filter portion can be the same as the color of the corresponding pixel. For example, the high-folding portion 154a set above the red pixel can be a red filter portion. In this way, the high-folding portion 154a uses the focusing area 1541 to refract the large-angle light into small-angle light to improve the front-view brightness of the anti-peeping display screen 100a, and can also absorb (filter out) the large-angle light of other colors that crosstalks to the pixel. For example, when the large-angle light emitted by the green pixel adjacent to the red pixel enters the high-folding portion 154a (red filter portion) above the red pixel, the high-folding portion 154a can absorb the green light emitted by the green pixel, thereby preventing crosstalk and light leakage. Moreover, when external ambient light enters the anti-peeping display screen 100a, the high-folding portion 154a of the corresponding color arranged above the pixel can also absorb light of other colors from the outside. For example, the high-folding portion 154a (red filter portion) arranged above the red pixel can absorb external green light, blue light, etc., to reduce the reflectivity of the anti-peeping display screen 100a.

[0138] Continue to refer to Figure 5 Similar to the first embodiment, the anti-peeping display screen 100a in this embodiment is further provided with an optical adhesive layer 160, a circular polarizer 170 and a cover plate 180 on the anti-peeping layer 150. The optical adhesive layer 160, the circular polarizer 170 and the cover plate 180 are sequentially stacked on the flat layer 152 of the anti-peeping layer 150, which will not be described in detail here.

[0139] Embodiment 3

[0140] Figure 6 This is a schematic diagram of the structure of the anti-peeping display screen provided in Example 3 of the present application. Figure 6 As shown, the anti-peeping display screen 100a provided in the third embodiment also includes an OLED display module and an anti-peeping layer 150 stacked on the OLED display module. The structure of the OLED display module is similar to that of the OLED display module in the first embodiment, and the anti-peeping layer 150 in the third embodiment also includes a basic light absorbing layer 151, a flat layer 152 and a first isolation layer 153, which will not be described in detail here.

[0141] Different from the first embodiment, in this embodiment, the touch layer 140 is a patterned touch layer 140, and the touch layer 140 is provided with a plurality of second openings 141 arranged in an array, each second opening 141 is opposite to each pixel opening, and the first isolation layer 153 covers the touch layer 140 and fills each second opening 141, and the portion of the first isolation layer 153 located in the second opening 141 is formed on the encapsulation layer 130.

[0142] It should be noted that the base material of the touch layer 140 may be an optical resin material, and a circuit is arranged in the base material to realize the touch function of the touch layer 140. When forming the touch layer 140, the overall touch layer 140 may be first coated, and then the touch layer 140 may be patterned through exposure and development processes to form a plurality of second openings 141 arranged in an array in the touch layer 140. Exemplarily, the thickness of the touch layer 140 may be set between 3 μm and 5 μm, for example, the thickness of the touch layer 140 may be 3.5 μm, 4 μm, 4.5 μm, etc.

[0143] The touch layer 140 may be made of a material with a low refractive index, and the first isolation layer 153 may be made of a material with a high refractive index, and the refractive index of the touch layer 140 is less than that of the first isolation layer 153. Exemplarily, the refractive index of the touch layer 140 may be 1.4-1.55, for example, the refractive index of the touch layer 140 is 1.42, 1.44, 1.46, 1.48, 1.5, 1.52, 1.54, etc. The refractive index of the first isolation layer 153 may be 1.6-1.8, for example, the refractive index of the first isolation layer 153 is 1.62, 1.64, 1.66, 1.68, 1.7, 1.72, 1.74, 1.76, 1.78, etc.

[0144] Reference Figure 6 As shown, similar to the first embodiment, the small-angle light (indicated by the small solid arrow in the figure) emitted by the pixel can pass through the first isolation layer 153 and pass through the first opening 1511 of the basic light absorption layer 151 to irradiate outward; the large-angle light (indicated by the dotted arrow in the figure) emitted by the pixel can be transmitted to the basic light absorption layer 151 through the touch layer 140 and absorbed by the basic light absorption layer 151. On this basis, part of the light with a larger angle (indicated by the large solid arrow in the figure) emitted by the pixel is transmitted to the side wall of the second opening 141 of the touch layer 140, and is totally reflected at the interface between the first isolation layer 153 and the touch layer 140, and becomes a small-angle light after reflection, which can pass through the first opening 1511 of the basic light absorption layer 151 to irradiate outward.

[0145] With such a configuration, part of the high-angle light transmitted to the side wall of the second opening 141 of the touch layer 140 can be totally reflected at the interface between the first isolation layer 153 and the touch layer 140, and then form a small-angle light, which is emitted from the first opening 1511 of the basic light absorption layer 151. In this way, the light loss of the pixel is reduced, the light-emitting efficiency of the pixel is improved, and since the proportion of the small-angle light emitted by the pixel is increased, the front-view brightness of the anti-peeping display screen 100a can be improved, and the display effect of the anti-peeping display screen 100a can be improved.

[0146] The second opening 141 of the touch layer 140 can be arranged to match the pixel opening, the shape of the second opening 141 can be roughly consistent with the shape of the pixel opening, and the opening area of ​​the second opening 141 can be roughly consistent with the opening area of ​​the pixel opening, or the opening area of ​​the second opening 141 can be slightly larger than the opening area of ​​the pixel opening. Exemplarily, the difference between the center-to-edge distance of the second opening 141 opened on the touch layer 140 and the center-to-edge distance of the pixel opening can be between -1μm and 4μm.

[0147] Continue to refer to Figure 6 Similar to the first embodiment, the anti-peeping display screen 100a in this embodiment is further provided with an optical adhesive layer 160, a circular polarizer 170 and a cover plate 180 on the anti-peeping layer 150. The optical adhesive layer 160, the circular polarizer 170 and the cover plate 180 are sequentially stacked on the flat layer 152 of the anti-peeping layer 150, which will not be described in detail here.

[0148] Embodiment 4

[0149] Figure 7 This is a schematic diagram of the structure of the anti-peeping display screen provided in the fourth embodiment of the present application. Figure 7 As shown, the anti-peeping display screen 100a provided in the fourth embodiment also includes an OLED display module and an anti-peeping layer 150 stacked on the OLED display module. The structure of the OLED display module is similar to that of the OLED display module in the first embodiment, and the anti-peeping layer 150 in the fourth embodiment also includes a basic light absorbing layer 151, a flat layer 152 and a first isolation layer 153, which will not be described in detail here.

[0150] Similar to the third embodiment, in this embodiment, the touch layer 140 is also a patterned touch layer 140, and the touch layer 140 is provided with a plurality of second openings 141 arranged in an array, and each second opening 141 is directly opposite to each pixel opening. Figure 7 As shown, in this embodiment, the privacy protection layer 150 further includes a second isolation layer 155 and a first low-fold layer 156. The second isolation layer 155 covers the touch layer 140 and fills the second openings 141 of the touch layer 140. The first low-fold layer 156 covers the second isolation layer 155, and the first low-fold layer 156 is provided with a plurality of third openings 1561 arranged in an array, each third opening 1561 is opposite to each pixel opening, and the first isolation layer 153 covers the first low-fold layer 156 and fills the third openings 1561 of the first low-fold layer 156.

[0151] Taking the thickness of the touch layer 140 as 3μm-5μm as an example, in order to make the second isolation layer 155 completely cover the touch layer 140, the thickness of the second isolation layer 155 can be slightly larger than the thickness of the touch layer 140. The thickness of the second isolation layer 155 can be between 4μm and 7μm. For example, the thickness of the second isolation layer 155 can be 4.5μm, 5μm, 5.5μm, 6μm, 6.5μm, etc.

[0152] The second isolation layer 155 and the first low-fold layer 156 can both be made of optical resin materials. After coating, exposing and developing on the encapsulation layer 130 to form a patterned touch layer 140, the second isolation layer 155 is coated on the touch layer 140, and then, the first low-fold layer 156 is coated on the second isolation layer 155, exposed and developed, and then, the first isolation layer 153 is formed by inkjet printing on the first low-fold layer 156.

[0153] The touch layer 140 and the first low-fold layer 156 may be made of a material with a low refractive index, and the first isolation layer 153 and the second isolation layer 155 may be made of a material with a high refractive index, so that the refractive index of the touch layer 140 is lower than that of the second isolation layer 155, and the refractive index of the first low-fold layer 156 is lower than that of the first isolation layer 153. Exemplarily, the refractive index of the touch layer 140 and the first low-fold layer 156 may be 1.4-1.55, for example, the refractive index of the touch layer 140 and the first low-fold layer 156 is 1.42, 1.44, 1.46, 1.48, 1.5, 1.52, 1.54, etc. The refractive index of the first isolation layer 153 and the second isolation layer 155 may be 1.6-1.8. For example, the refractive index of the first isolation layer 153 and the second isolation layer 155 is 1.62, 1.64, 1.66, 1.68, 1.7, 1.72, 1.74, 1.76, 1.78, etc.

[0154] Reference Figure 7As shown, similar to the first embodiment, the small-angle light emitted by the pixel (indicated by the small dotted arrow in the figure) can pass through the second isolation layer 155 and the first isolation layer 153 in sequence, and pass through the first opening 1511 of the basic light absorption layer 151 to irradiate outward; the large-angle light emitted by the pixel (indicated by the large dotted arrow in the figure) can pass through the touch layer 140, the second isolation layer 155, the first low-folding layer 156 and the first isolation layer 153 in sequence, and be transmitted to the basic light absorption layer 151 and absorbed by the basic light absorption layer 151. On this basis, part of the larger-angle light emitted by the pixel (indicated by the small solid arrow in the figure) is transmitted to the side wall of the second opening 141 of the touch layer 140, and is totally reflected at the interface between the second isolation layer 155 and the touch layer 140, and becomes a small-angle light after reflection. The small-angle light can pass through the first opening 1511 of the basic light absorption layer 151 to irradiate outward; similarly, part of the larger-angle light emitted by the pixel (indicated by the large arrow in the figure) is transmitted to the side wall of the third opening 1561 of the first low-fold layer 156, and is totally reflected at the interface between the first isolation layer 153 and the first low-fold layer 156, and becomes a small-angle light after reflection. The small-angle light can pass through the first opening 1511 of the basic light absorption layer 151 to irradiate outward.

[0155] With such a configuration, the interface between the second isolation layer 155 and the touch layer 140 can totally reflect part of the large-angle light emitted by the pixel, and the interface between the first isolation layer 153 and the first low-refractive layer 156 can also totally reflect part of the large-angle light emitted by the pixel. There are two layers of high-low refraction interfaces that totally reflect the large-angle light to form small-angle light, which can further reduce the luminous loss of the pixel, improve the luminous efficiency of the pixel, and further increase the proportion of small-angle light emitted by the pixel, further improve the front-view brightness of the anti-peeping display screen 100a, and enhance the display effect of the anti-peeping display screen 100a.

[0156] Among them, similar to the second opening 141 of the touch layer 140, the third opening 1561 of the first low-fold layer 156 can also be matched and set according to the pixel opening, and the shape of the third opening 1561 of the first low-fold layer 156 can be roughly consistent with the shape of the pixel opening, and the opening area of ​​the third opening 1561 can be roughly consistent with the opening area of ​​the pixel opening, or the opening area of ​​the third opening 1561 can be slightly larger than the opening area of ​​the pixel opening. Exemplarily, the difference between the center-to-edge distance of the third opening 1561 opened on the first low-fold layer 156 and the center-to-edge distance of the pixel opening can be between -1μm and 4μm.

[0157] Continue to refer to Figure 7Similar to the first embodiment, the anti-peeping display screen 100a in this embodiment is further provided with an optical adhesive layer 160, a circular polarizer 170 and a cover plate 180 on the anti-peeping layer 150. The optical adhesive layer 160, the circular polarizer 170 and the cover plate 180 are sequentially stacked on the flat layer 152 of the anti-peeping layer 150, which will not be described in detail here.

[0158] Embodiment 5

[0159] Figure 8 This is a schematic diagram of the structure of the anti-peeping display screen provided in Example 5 of the present application. Figure 8 As shown, the anti-peeping display screen 100a provided in the fifth embodiment also includes an OLED display module and an anti-peeping layer 150 stacked on the OLED display module. The structure of the OLED display module is similar to that of the OLED display module in the first embodiment, and the anti-peeping layer 150 in the fifth embodiment also includes a basic light absorbing layer 151, a flat layer 152 and a first isolation layer 153, which will not be described in detail here.

[0160] Reference Figure 8 As shown, on the basis of providing the basic light absorption layer 151, the privacy protection layer 150 of this embodiment may further include a color photoresist layer 157, the color photoresist layer 157 may be formed on the first isolation layer 153, and the flat layer 152 covers the color photoresist layer 157. The color photoresist layer 157 includes a plurality of light-resisting portions 157a arranged in an array, each light-resisting portion 157a is provided corresponding to each first opening 1511 of the basic light absorption layer 151, which is equivalent to each light-resisting portion 157a being provided corresponding to each pixel opening.

[0161] In order to allow the flat layer 152 to completely cover the color photoresist layer 157, the thickness of the color photoresist layer 157 should be less than the thickness of the flat layer 152. Taking the thickness of the flat layer 152 as 2 μm-6 μm, the thickness of the color photoresist layer 157 (photoresist portion 157a) can be 2 μm-5 μm, for example, the thickness of the color photoresist layer 157 is 2.5 μm, 3 μm, 3.5 μm, 4 μm, 4.5 μm, etc.

[0162] Specifically, in this embodiment, the basic light absorbing layer 151 directly covers the first isolation layer 153, and each light resist portion 157a of the color photoresist layer 157 fills each first opening 1511 of the basic light absorbing layer 151. After coating, exposing, and developing to form a patterned basic light absorbing layer 151, a whole layer of the color photoresist layer 157 can be coated on the basic light absorbing layer 151, and then the color photoresist layer 157 is patterned by exposing and developing to form the light resist portion 157a filled in each first opening 1511.

[0163] Since the basic light absorbing layer 151 can absorb the light emitted by the corresponding pixel, each light blocking portion 157a can be filled only in each first opening 1511, or, on the basis of each light blocking portion 157a filling the first opening 1511, the light blocking portion 157a can also extend to cover the top surface of the basic light absorbing layer 151, and the light blocking portion 157a will not affect the light absorption (or shading) effect of the basic light absorbing layer 151.

[0164] The color of each light blocking portion 157a is the same as the color of the corresponding pixel. Taking the red pixel as an example, the color of the light blocking portion 157a arranged above the red pixel can be red. In other words, the light blocking portion 157a arranged above the red pixel can be a red light blocking portion. With such a configuration, when the external ambient light enters the anti-peeping display screen 100a, the light blocking portion 157a above the pixel can absorb light of other colors from the outside, and the light absorption effect of the basic light absorption layer 151 arranged around its periphery can reduce the reflectivity of the anti-peeping display screen 100a and improve the contrast of the anti-peeping display screen 100a. In addition, when the large-angle light emitted by the surrounding pixels of other colors is transmitted to the light blocking portion 157a above the pixel, the light blocking portion 157a can absorb the large-angle light, thereby preventing cross-light and light leakage.

[0165] Continue to refer to Figure 8 Similar to the first embodiment, the privacy protection display screen 100a in this embodiment is further provided with an optical adhesive layer 160 and a cover plate 180 on the privacy protection layer 150, and the optical adhesive layer 160 and the cover plate 180 are sequentially stacked on the flat layer 152 of the privacy protection layer 150. Since the color photoresist layer 157 is additionally provided on the first isolation layer 153 in this embodiment, the color photoresist layer 157 can reduce the reflectivity of the privacy protection display screen 100a and improve the contrast of the privacy protection display screen 100a, and therefore, there is no need to provide a circular polarizer 170 under the cover plate 180.

[0166] It should be stated that Figure 8 1 shows a method in which the touch layer 140 is provided with a plurality of second openings 141 arranged in an array, that is, this embodiment is based on the third embodiment, and a color photoresist layer 157 is further provided on the first isolation layer 153. It can be understood that the method of adding the color photoresist layer 157 in this embodiment and subsequent embodiments can also be an improvement based on the aforementioned first embodiment, second embodiment or fourth embodiment, and will not be described in detail.

[0167] Embodiment 6

[0168] Fig. 9 This is a schematic diagram of the structure of the anti-peeping display screen provided in Example 6 of the present application. Fig. 9As shown, the anti-peeping display screen 100a provided in the sixth embodiment also includes an OLED display module and an anti-peeping layer 150 stacked on the OLED display module. The structure of the OLED display module is similar to that of the OLED display module in the first embodiment, and the anti-peeping layer 150 in the sixth embodiment also includes a basic light absorbing layer 151, a flat layer 152 and a first isolation layer 153, which will not be described in detail here.

[0169] Similar to the fifth embodiment, the privacy protection layer 150 of this embodiment also includes a colored photoresist layer 157, which is formed on the first isolation layer 153, and each light-resisting portion 157a of the colored photoresist layer 157 fills each first opening 1511 of the basic light-absorbing layer 151. On the basis of the fifth embodiment, the privacy protection layer 150 of this embodiment also includes a second low-folding layer 158, which is formed on the basic light-absorbing layer 151. In other words, the second low-folding layer 158 covers the basic light-absorbing layer 151 and the sidewalls of each first opening 1511, and the second low-folding layer 158 is provided with a plurality of fourth openings 1581, each fourth opening 1581 is located in each first opening 1511, and each light-resisting portion 157a fills each fourth opening 1581.

[0170] The thickness of the second low-fold layer 158 can be relatively small, and the thickness of the second low-fold layer 158 can be between 0.5 μm and 2 μm. For example, the thickness of the second low-fold layer 158 is 0.8 μm, 1 μm, 1.2 μm, 1.5 μm, 1.8 μm, etc. The second low-fold layer 158 can be made of an optical resin material. After forming a patterned basic light absorption layer 151, a whole layer of the second low-fold layer 158 can be coated on the basic light absorption layer 151. Then, the second low-fold layer 158 is exposed and developed to form a plurality of fourth openings 1581 arranged in an array and located in each first opening 1511 of the basic light absorption layer 151 on the second low-fold layer 158. Then, a color photoresist layer 157 is formed on the second low-fold layer 158.

[0171] The second low-fold layer 158 may be made of a low-refractive material, and the color photoresist layer 157 may be made of a high-refractive material. The refractive index of the second low-fold layer 158 is lower than that of the color photoresist layer 157. Exemplarily, the refractive index of the second low-fold layer 158 may be 1.4-1.55, for example, the refractive index of the second low-fold layer 158 is 1.42, 1.44, 1.46, 1.48, 1.5, 1.52, 1.54, etc. The refractive index of the color photoresist layer 157 may be 1.58-1.8, for example, the refractive index of the color photoresist layer 157 is 1.60, 1.62, 1.64, 1.66, 1.68, 1.7, 1.72, 1.74, 1.76, 1.78, etc.

[0172] Reference Fig. 9As shown, part of the large-angle light emitted by the pixel (indicated by the solid arrow in the figure) passes through the first isolation layer 153 and the color photoresist layer 157 in turn, and is transmitted to the side wall of the fourth opening 1581 of the second low-fold layer 158, and is refracted or totally reflected at the interface between the color photoresist layer 157 and the second low-fold layer 158, forming a small-angle light, which is emitted outward through the color photoresist layer 157. In this way, the luminous loss of the pixel can be reduced, the luminous efficiency of the pixel can be improved, and the small-angle light emission ratio of the pixel is increased, thereby improving the front-view brightness of the anti-peeping display screen 100a. In addition, it is also helpful to narrow the light emission angle range of the anti-peeping display screen 100a and improve the anti-peeping effect of the anti-peeping display screen 100a.

[0173] Continue to refer to Figure 8 Similar to the fifth embodiment, the anti-peeping display screen 100a in this embodiment is further provided with an optical adhesive layer 160 and a cover plate 180 on the anti-peeping layer 150. The optical adhesive layer 160 and the cover plate 180 are sequentially stacked on the flat layer 152 of the anti-peeping layer 150, which will not be described in detail here.

[0174] Embodiment 7

[0175] Fig.10 A schematic diagram of the structure of an anti-peeping display screen provided in Embodiment 7 of the present application; Fig.11 This is a schematic diagram of the structure of another anti-peeping display screen provided in Example 7 of the present application. Fig.10 or Fig.11 As shown, the anti-peeping display screen 100a provided in the seventh embodiment also includes an OLED display module and an anti-peeping layer 150 stacked on the OLED display module. The structure of the OLED display module is similar to that of the OLED display module in the first embodiment, and the anti-peeping layer 150 in the seventh embodiment also includes a basic light absorbing layer 151, a flat layer 152 and a first isolation layer 153, which will not be described in detail here.

[0176] Similar to the fifth embodiment, the privacy protection layer 150 of this embodiment also includes a color photoresist layer 157, and the color photoresist layer 157 is formed on the first isolation layer 153. Fig.10 or Fig.11As shown, different from the fifth embodiment, in this embodiment, the anti-peeping layer 150 further includes a third low-folding layer 159, which can be directly formed on the first isolation layer 153, and the basic light absorption layer 151 is formed on the third low-folding layer 159. The third low-folding layer 159 is provided with a plurality of fifth openings 1591, each fifth opening 1591 is arranged opposite to the pixel opening of each pixel, each light blocking portion 157a of the color light blocking layer 157 is filled in each fifth opening 1591, each first opening 1511 of the basic light absorption layer 151 located on the third low-folding layer 159 corresponds to each fifth opening 1591 of the third low-folding layer 159, and the light blocking portion 157a located in the fifth opening 1591 is exposed outside the basic light absorption layer 151, and the flat layer 152 covers the basic light absorption layer 151 and the color light blocking layer 157.

[0177] Exemplarily, the shape of the fifth opening 1591 on the third low-folding layer 159 may match the shape of the pixel opening, and the opening area of ​​the fifth opening 1591 may also be greater than or equal to the opening area of ​​the pixel opening.

[0178] Since the third low-fold layer 159 is formed on the first isolation layer 153, the thickness of the third low-fold layer 159 can be relatively large, and the thickness of the third low-fold layer 159 can be between 0.5 μm and 3 μm, for example, the thickness of the third low-fold layer 159 can be 1.0 μm, 1.5 μm, 2.0 μm, 2.5 μm, etc. The basic light absorption layer 151 is formed on the third low-fold layer 159, and the thickness of the basic light absorption layer 151 can be relatively small, and the thickness of the basic light absorption layer 151 can be between 0.5 μm and 1 μm, for example, the thickness of the basic light absorption layer 151 can be 0.6 μm, 0.7 μm, 0.8 μm, 0.9 μm, etc.

[0179] The third low-fold layer 159 can be made of an optical resin material. The entire third low-fold layer 159 can be coated on the first isolation layer 153. Then, the third low-fold layer 159 is exposed and developed to form a plurality of fifth openings 1591 arranged in an array and corresponding to each pixel opening on the third low-fold layer 159. In particular, limited by the conditions of the etching process, the fifth openings 1591 of the third low-fold layer 159 can be in an inverted trapezoidal shape, and the taper angle of the bottom end of the third low-fold layer 159 can be 30°-85°. Then, the color photoresist layer 157 is coated, exposed, and developed on the third low-fold layer 159, so that each light-resisting portion 157a of the color photoresist layer 157 is filled in each fifth opening 1591 of the third low-fold layer 159. Then, the third low-fold layer 159 is coated, exposed, and developed to form a basic light-absorbing layer 151.

[0180] Exemplarily, the light blocking portion 157a of the color light blocking layer 157 may only fill the fifth opening 1591 of the third low-fold layer 159. Alternatively, the light blocking portion 157a may also extend outside the fifth opening 1591 and cover the top surface of the third low-fold layer 159. In this case, the basic light absorbing layer 151 may cover the color light blocking layer 157 (light blocking portion 157a). The following description is based on the example that the light blocking portion 157a extends to cover the top surface of the third low-fold layer 159 and the basic light absorbing layer 151 covers the color light blocking layer 157, and no further description is given.

[0181] The third low-fold layer 159 may be made of a low-refractive material, the color photoresist layer 157 may be made of a high-refractive material, and the refractive index of the third low-fold layer 159 is lower than the refractive index of the color photoresist layer 157. Exemplarily, the refractive index of the third low-fold layer 159 may be 1.4-1.55, for example, the refractive index of the third low-fold layer 159 is 1.42, 1.44, 1.46, 1.48, 1.5, 1.52, 1.54, etc. The refractive index of the color photoresist layer 157 may be 1.58-1.8, for example, the refractive index of the third color photoresist layer 157 is 1.60, 1.62, 1.64, 1.66, 1.68, 1.7, 1.72, 1.74, 1.76, 1.78, etc.

[0182] Reference Fig.10 or Fig.11 As shown, part of the large-angle light emitted by the pixel (indicated by the solid arrow in the figure) passes through the first isolation layer 153 and the color photoresist layer 157 in turn, and is transmitted to the side wall of the fifth opening 1591 of the third low-fold layer 159, and is refracted or totally reflected at the interface between the color photoresist layer 157 and the third low-fold layer 159, forming a small-angle light, which is emitted outward through the color photoresist layer 157. In this way, the luminous loss of the pixel can be reduced, the luminous efficiency of the pixel can be improved, and the small-angle light emission ratio of the pixel is increased, thereby improving the front-view brightness of the anti-peeping display screen 100a. In addition, it is also helpful to narrow the light emission angle range of the anti-peeping display screen 100a and improve the anti-peeping effect of the anti-peeping display screen 100a.

[0183] As for the basic light absorption layer 151 formed on the third low-folding layer 159, similar to the basic light absorption layer 151 in the first embodiment, the basic light absorption layer 151 can be a light shielding layer 151a, and the basic light absorption layer 151 can absorb light of all colors; or, the basic light absorption layer 151 can also be a filter layer 151b, and the color of the basic light absorption layer 151 is different from the color of the corresponding pixel, and the basic light absorption layer 151 can absorb the large-angle light emitted by the corresponding pixel, which will not be repeated here.

[0184] Taking the basic light absorption layer 151 as a filter layer 151b of other colors as an example, refer to Fig.10As shown, the basic light absorption layer 151 may include only one filter layer 151b. In this embodiment, the single filter layer 151b is defined as a first filter layer 1512. The color of the first filter layer 1512 is different from the color of the corresponding pixel. Taking a red pixel as an example, the first filter layer 1512 disposed above the red pixel and serving as the basic light absorption layer 151 may be a green filter layer or a blue filter layer.

[0185] When the first filter layer 1512 covers the color photoresist layer 157, since the color of the first filter layer 1512 is different from that of the color photoresist layer 157, the first filter layer 1512 can absorb the light emitted by the corresponding pixel, and the color photoresist layer 157 can absorb the large-angle light emitted by the surrounding pixels of different colors. Therefore, by superimposing the first filter layer 1512 on the color photoresist layer 157, the effects of preventing cross-light and light leakage can also be achieved, and the display effect of the anti-peeping display screen 100a can be improved.

[0186] Reference Fig.11 As shown, the basic light absorption layer 151 may also include two filter layers 151b stacked in sequence. In other words, a second filter layer 1513 is further provided on the first filter layer 1512. The color of the first filter layer 1512 and the color of the second filter layer 1513 are both different from the color of the corresponding pixel, and the color of the first filter layer 1512 and the color of the second filter layer 1513 are different. Continuing to take the red pixel as an example, in the basic light absorption layer 151 provided above the red pixel, one of the first filter layer 1512 and the second filter layer 1513 may be a green filter layer, and the other may be a blue filter layer.

[0187] When the first filter layer 1512 and the second filter layer 1513 are stacked on the color photoresist layer 157 in sequence, since the colors of the color photoresist layer 157, the first filter layer 1512 and the second filter layer 1513 are different, for example, the colors of the color photoresist layer 157, the first filter layer 1512 and the second filter layer 1513 are red, green and blue respectively, which constitute the three primary colors and can absorb light emitted by pixels of all colors, and can play a better role in preventing cross-light and light leakage, so as to further improve the display effect of the anti-peeping display screen 100a.

[0188] Continue to refer to Fig.10 or Fig.11 Similar to the fifth embodiment, the anti-peeping display screen 100a in this embodiment is further provided with an optical adhesive layer 160 and a cover plate 180 on the anti-peeping layer 150. The optical adhesive layer 160 and the cover plate 180 are sequentially stacked on the flat layer 152 of the anti-peeping layer 150, which will not be described in detail here.

[0189] Embodiment 8

[0190] Fig.12This is a schematic diagram of the structure of the anti-peeping display screen provided in Example 8 of the present application. Fig.12 As shown, the figure shows the structure of two adjacent pixels. The colors of the two adjacent pixels can be different. For example, the two adjacent pixels are a red pixel and a green pixel respectively.

[0191] The anti-peeping display screen 100a provided in this embodiment also includes an OLED display module and an anti-peeping layer 150 stacked on the OLED display module. The structure of the OLED display module is similar to that of the OLED display module in the first embodiment, and the anti-peeping layer 150 in the fourth embodiment also includes a basic light absorbing layer 151, a flat layer 152 and a first isolation layer 153, which will not be described in detail here.

[0192] Reference Fig.12 As shown, different from the first embodiment, the peep screen 100a of this embodiment further includes an additional light absorbing layer 190, which is disposed on the light-emitting side of the pixel, and is located on the side of the basic light absorbing layer 151 facing the substrate 110. That is, in the thickness direction of the peep screen 100a, the additional light absorbing layer 190 is located between the OLED device 122 and the basic light absorbing layer 151. The additional light absorbing layer 190 is provided with a plurality of sixth openings 191 arranged in an array, and each sixth opening 191 corresponds to each pixel opening.

[0193] The additional light absorption layer 190 is mainly used to improve the crosstalk phenomenon of large-angle light between pixels. To this end, the additional light absorption layer 190 can be located on the optical path of large-angle light that will crosstalk to the pixel from adjacent pixels. For example, the additional light absorption layer 190 is located on the optical path of the light that will pass through the first opening 1511 of the basic light absorption layer 151 of the pixel among the large-angle light emitted by the adjacent pixels. Thus, the additional light absorption layer 190 can absorb the large-angle light that crosstalks from adjacent pixels to the pixel, and play a role in preventing crosstalk and light leakage.

[0194] In order to ensure that the additional light absorbing layer 190 can prevent the light crosstalk between adjacent pixels, a certain distance may be provided between the additional light absorbing layer 190 and the basic light absorbing layer 151 in the thickness direction of the anti-peeping display screen 100a, so as to ensure that the additional light absorbing layer 190 can block the optical path of the large-angle light of the adjacent pixel (which can crosstalk to the pixel). Exemplarily, the additional light absorbing layer 190 may be disposed in the encapsulation layer 130 (e.g., the organic layer 132) of the OLED display module, or the additional light absorbing layer 190 may also be disposed on the encapsulation layer 130, for example, the additional light absorbing layer 190 is disposed on the touch layer 140, and the first isolation layer 153 covers the additional light absorbing layer 190 (e.g., the touch layer 140). Fig.12 shown).

[0195] Taking the first isolation layer 153 covering the additional light absorbing layer 190 as an example, in order to enable the first isolation layer 153 to completely cover the additional light absorbing layer 190, the thickness of the additional light absorbing layer 190 should be less than the thickness of the first isolation layer 153. Exemplarily, the thickness of the additional light absorbing layer 190 can be roughly consistent with the thickness of the basic light absorbing layer 151, and the thickness of the additional light absorbing layer 190 can be between 0.5 μm and 5 μm. For example, the thickness of the additional light absorbing layer 190 can be 1 μm, 1.5 μm, 2 μm, 2.5 μm, 3 μm, 3.5 μm, 4 μm, 4.5 μm, etc.

[0196] Reference Fig.12 As shown, for a certain pixel, the small-angle light emitted by the pixel (indicated by the large solid arrow in the figure) can pass through the first isolation layer 153 and irradiate outward through the first opening 1511 of the basic light absorption layer 151; the large-angle light emitted by the pixel (indicated by the small solid arrow in the figure) is transmitted to the basic light absorption layer 151 and absorbed by the basic light absorption layer 151; and the extra-large-angle light emitted by the pixel that will crosstalk to adjacent pixels (indicated by the solid arrow + dotted arrow extending sequentially in the figure) will be transmitted to the additional light absorption layer 190 and absorbed by the additional light absorption layer 190.

[0197] As for the specific arrangement of the additional light absorbing layer 190, similar to the basic light absorbing layer 151, the additional light absorbing layer 190 can be a light shielding layer, and the additional light absorbing layer 190 can absorb light of all colors. It should be noted that since the extremely large angle light emitted by a pixel that will crosstalk to adjacent pixels may pass through the additional light absorbing layer 190 arranged above the pixel, it may also pass through the additional light absorbing layer 190 arranged above the adjacent pixel, and the colors of adjacent pixels are usually different, therefore, for the convenience of arrangement, the additional light absorbing layer 190 can be arranged as a light shielding layer that can absorb light of all colors.

[0198] In addition, for the additional light absorbing layer 190 that blocks large-angle light crosstalk between pixels, the opening area of ​​the sixth opening 191 of the additional light absorbing layer 190 can be slightly larger than the opening area of ​​the first opening 1511 of the basic light absorbing layer 151. In other words, the orthographic projection of the sixth opening 191 of the additional light absorbing layer 190 on the flat layer 152 can completely cover the orthographic projection of the first opening 1511 of the basic light absorbing layer 151 on the flat layer 152. It is only necessary to ensure that the additional light absorbing layer 190 can block the light path of large-angle light that causes crosstalk between pixels.

[0199] In this regard, the opening area of ​​the sixth opening 191 of the additional light absorption layer 190 may be greater than the opening area of ​​the pixel opening. Exemplarily, the difference between the distance from the center to the edge of the sixth opening 191 and the distance from the center to the edge of the pixel opening may be between 1 μm and 6 μm, for example, the difference may be 1.5 μm, 2 μm, 2.5 μm, 3 μm, 3.5 μm, 4 μm, 4.5 μm, 5 μm, 5.5 μm, etc.

[0200] It should be noted that when the additional light absorbing layer 190 is provided in the anti-peeping display screen 100a, the color photoresist layer 157 (eg, Fig.12 As shown in FIG. 1 , the additional light absorbing layer 190 absorbs the large-angle light that crosstalks between pixels, thereby preventing crosstalk and light leakage. Of course, a color light-blocking layer 157 may also be provided (corresponding to the first opening 1511 of the basic light-absorbing layer 151). In this case, the main function of the color light-blocking layer 157 is to absorb light of other colors from the outside and reduce the reflectivity of the anti-peeping display screen 100a.

[0201] Fig.13 This is an optical simulation comparison diagram of the anti-peeping display screen provided in the embodiment of the present application. Fig.13 As shown in the figure, the anti-peeping display screen 100a provided in the third embodiment is taken as an example to compare the brightness of the anti-peeping display screen 100a of the embodiment of the present application with the brightness of the traditional OLED display screen 100.

[0202] As can be seen from the figure, the present embodiment provides an anti-peeping layer 150 to absorb (block) the large-angle light emitted by the pixel, so that the brightness of the anti-peeping display screen 100a decreases sharply with the increase of the viewing angle. Among them, at a viewing angle of 45°, the brightness of the anti-peeping display screen 100a is 5% lower than the brightness at a viewing angle of 0° (a completely vertical front viewing angle); when the viewing angle increases to 50°, the brightness of the anti-peeping display screen 100a is almost 0. It can be seen that the anti-peeping display screen 100a of the present embodiment has a good anti-peeping effect.

[0203] The optical simulation results of the anti-peeping display screen 100a provided in other embodiments can be similar to the optical simulation results of the anti-peeping display screen 100a in the third embodiment, and will not be described in detail.

[0204] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, or it can be an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0205] The terms "first", "second", "third", "fourth", etc. (if any) in the description and claims of the embodiments of the present application and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

Claims

1. An anti-peeping display screen, characterized in that: include: A substrate, an OLED device layer, a packaging layer and an anti-peeping layer, wherein the OLED device layer and the packaging layer are sequentially stacked on the substrate, and the anti-peeping layer is arranged on the packaging layer; The OLED device layer array is arranged with a plurality of pixels, the anti-peep layer includes a basic light-absorbing layer and a flat layer, the basic light-absorbing layer is provided with a plurality of first openings arranged in an array, each of the first openings is directly opposite to a pixel opening of each of the pixels, and the flat layer covers the basic light-absorbing layer; wherein the basic light-absorbing layer can absorb light emitted by the corresponding pixel; The anti-peeping layer further comprises a transparent first isolation layer, the first isolation layer is arranged on the encapsulation layer, and the basic light absorption layer is arranged on the first isolation layer; It also includes a touch layer, which covers the packaging layer, and the first isolation layer is arranged on the touch layer; the touch layer is provided with a plurality of second openings arranged in an array, each of the second openings is directly opposite to each of the pixel openings, the first isolation layer covers the touch layer and fills each of the second openings, and the refractive index of the touch layer is lower than the refractive index of the first isolation layer.

2. The anti-peeping display screen according to claim 1, characterized in that: The basic light-absorbing layer includes a light-shielding layer, and the light-shielding layer is light-proof.

3. The anti-peeping display screen according to claim 1, characterized in that: The basic light absorption layer includes a filter layer, the color of the filter layer is different from the color of the corresponding pixel, and the filter layer is used to absorb the light emitted by the corresponding pixel.

4. The anti-peeping display screen according to claim 1, characterized in that: The difference between the distance from the center to the edge of the first opening and the distance from the center to the edge of the pixel opening is -1 μm to 3 μm.

5. The anti-peeping display screen according to claim 1, characterized in that: The thickness of the first isolation layer is 8 μm-20 μm.

6. The anti-peeping display screen according to claim 1, characterized in that: The first isolation layer is a transparent ink layer.

7. The anti-peeping display screen according to claim 1, characterized in that: The anti-peep layer further includes a high fold layer, the high fold layer is located on the encapsulation layer, the first isolation layer covers the high fold layer, and the refractive index of the high fold layer is higher than the refractive index of the first isolation layer; Wherein, the high-folding layer includes a plurality of high-folding portions arranged in an array, each of the high-folding portions is directly opposite to each of the pixel openings; the edge of the top surface of the high-folding portion has a focusing area, at least part of the focusing area is exposed in the first opening, and the focusing area is an arc surface protruding toward the periphery of the high-folding portion.

8. The anti-peeping display screen according to claim 7, characterized in that: The high-refractive portion is a filter portion, and the color of the filter portion is the same as the color of the corresponding pixel.

9. The anti-peeping display screen according to claim 1, characterized in that: The anti-peep layer also includes a second isolation layer and a first low-folding layer; The touch layer is provided with a plurality of second openings arranged in an array, each of the second openings is directly opposite to each of the pixel openings, the second isolation layer covers the touch layer and fills each of the second openings, and the refractive index of the touch layer is lower than the refractive index of the second isolation layer; The first low-fold layer covers the second isolation layer, the first low-fold layer is provided with a plurality of third openings arranged in an array, each of the third openings is directly opposite to each of the pixel openings, the first isolation layer covers the first low-fold layer and fills each of the third openings, and the refractive index of the first low-fold layer is lower than the refractive index of the first isolation layer.

10. The anti-peeping display screen according to any one of claims 1 to 9, characterized in that: It also includes an optical adhesive layer, a circular polarizer and a cover plate, wherein the optical adhesive layer, the circular polarizer and the cover plate are sequentially stacked on the anti-peeping layer.

11. The anti-peeping display screen according to any one of claims 1 to 9, characterized in that: The anti-peeping layer further includes a color photoresist layer, which includes a plurality of light-resistance portions arranged in an array, each of which is provided corresponding to each of the first openings, and the color of each of the light-resistance portions is the same as the color of the corresponding pixel.

12. The anti-peeping display screen according to claim 11, characterized in that: Each of the light blocking portions is filled in each of the first openings.

13. The anti-peeping display screen according to claim 12, characterized in that: The anti-peeping layer further includes a second low-fold layer, the second low-fold layer covers the basic light-absorbing layer and the sidewalls of each of the first openings, and the refractive index of the second low-fold layer is lower than the refractive index of the color light-resisting layer; The second low-folding layer is provided with a plurality of fourth openings, each of the fourth openings is located in each of the first openings, and each of the light blocking portions is filled in each of the fourth openings.

14. The anti-peeping display screen according to claim 11, characterized in that: The anti-peeping layer also includes a third low-folding layer, the third low-folding layer is provided with a plurality of fifth openings, each of the fifth openings is directly opposite to a pixel opening of each of the pixels, each of the light blocking portions is filled in each of the fifth openings, and the basic light absorbing layer is arranged on the third low-folding layer.

15. The anti-peeping display screen according to claim 14, characterized in that: The basic light absorption layer includes a first filter layer, and the color of the first filter layer is different from the color of the corresponding pixel.

16. The anti-peeping display screen according to claim 15, characterized in that: The basic light absorbing layer also includes a second filter layer, which covers the first filter layer. The color of the second filter layer is different from the color of the corresponding pixel, and the color of the second filter layer is different from the color of the first filter layer.

17. The anti-peeping display screen according to any one of claims 14 to 16, characterized in that: Each of the light blocking portions extends out of the fifth opening and covers the third low-folding layer, and the basic light absorbing layer covers the light blocking portion.

18. The anti-peeping display screen according to any one of claims 14 to 16, characterized in that: It also includes an optical adhesive layer and a cover plate, and the optical adhesive layer and the cover plate are sequentially stacked on the anti-peeping layer.

19. The anti-peeping display screen according to any one of claims 1 to 9, characterized in that: It also includes an additional light absorbing layer, which is arranged on the light emitting side of the pixel, and the additional light absorbing layer is located on a side of the basic light absorbing layer facing the substrate; The additional light absorbing layer is provided with a plurality of sixth openings arranged in an array, and the orthographic projection of each of the sixth openings on the flat layer covers the orthographic projection of each of the first openings on the flat layer.

20. The anti-peeping display screen according to claim 19, characterized in that: A difference between a distance from a center to an edge of the sixth opening and a distance from a center to an edge of the pixel opening is 1 μm-6 μm.

21. The anti-peeping display screen according to claim 19, characterized in that: The additional light absorbing layer is disposed on the encapsulation layer, and the first isolation layer covers the additional light absorbing layer.

22. An electronic device, characterized in that: It comprises a shell and the anti-peeping display screen according to any one of claims 1 to 21, wherein the anti-peeping display screen is attached to the shell.

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