Anti-peeping device, display panel and display device

Abstract

The invention relates to a peep-proof device, a display panel and a display device. The peep-proof device comprises a peep-proof film layer which is provided with a first light incident surface and a first light emergent surface, and the peep-proof film layer can reduce the emitting angle of light emitted from the first light emergent surface; the light adjusting layer is located on the side, away from the first light inlet face, of the first light outlet face, the light adjusting layer is provided with a second light inlet face and a second light outlet face, and light emitted from the first light outlet face enters the light adjusting layer through the second light inlet face; the wavelength corresponding to the transmission spectrum peak value of the light emitted from the second light emitting surface along the first direction is greater than the wavelength corresponding to the emission spectrum peak value of the light of at least one color emitted by the light emitting device; the wavelength corresponding to the transmission spectrum peak value of the light emitted from the second light emitting surface is reduced from the light emitted along the first direction to the light emitted along the second direction; wherein the first direction is perpendicular to the second light emitting surface, and the second direction is perpendicular to the first direction. The peep-proof device has a good peep-proof effect, and the display effect of the display panel can be improved.

Description

Technical Field

[0001] The present disclosure relates to the field of display technologies, and in particular, to an anti-peeping device, a display panel, and a display device. Background Art

[0002] Currently, in the field of display technologies, the anti-peeping performance of existing anti-peeping devices is poor, and the brightness at a small viewing angle is insufficient, seriously affecting the user experience.

[0003] It should be noted that the information disclosed in the above background art section is only used to enhance the understanding of the background of the present disclosure, and thus may include information that does not constitute the prior art known to those of ordinary skill in the art. Summary of the Invention

[0004] The purpose of the present disclosure is to provide an anti-peeping device, a display panel, and a display device, which can improve the anti-peeping effect and the display effect.

[0005] On the one hand, the present disclosure provides an anti-peeping device, including:

[0006] An anti-peeping film layer, having a first light incident surface and a first light exit surface, and the anti-peeping film layer can reduce the emission angle of the light emitted from the first light exit surface;

[0007] A light adjustment layer, located on a side of the first light exit surface away from the first light incident surface, the light adjustment layer having a second light incident surface and a second light exit surface, and the light emitted from the first light exit surface enters the light adjustment layer from the second light incident surface; the wavelength corresponding to the peak value of the transmission spectrum of the light emitted from the second light exit surface along a first direction is greater than the wavelength corresponding to the peak value of the emission spectrum of at least one color light emitted by the light emitting device, and the wavelength corresponding to the peak value of the transmission spectrum of the light emitted from the second light exit surface decreases from the light emitted along the first direction to the light emitted along a second direction;

[0008] Wherein, the first direction is perpendicular to the second light exit surface, and the second direction is perpendicular to the first direction.

[0009] In an exemplary embodiment of the present disclosure, the wavelength corresponding to the peak value of the transmission spectrum of the light emitted from the second light exit surface along a third direction is the same as the wavelength corresponding to the peak value of the emission spectrum of at least one color light emitted by the light emitting device;

[0010] Wherein, the third direction is located between the first direction and the second direction, and the third direction has a first included angle with the first direction, and the first included angle is 15° to 45°.

[0011] In an exemplary embodiment of the present disclosure, the light emitting device can emit blue light, green light, and red light;

[0012] The wavelength corresponding to the peak value of the transmittance spectrum of the light emitted from the second light-emitting surface along the first direction is located between the wavelengths corresponding to the peak values of the emission spectra of any two of the color lights;

[0013] Alternatively, the wavelength corresponding to the peak value of the transmittance spectrum of the light emitted from the second light-emitting surface along the first direction is greater than the wavelength corresponding to the peak value of the emission spectrum of the red light.

[0014] In an exemplary embodiment of the present disclosure, the transmittance spectrum of the light emitted from the second light-emitting surface along the first direction has a first peak value, a second peak value, and a third peak value;

[0015] Wherein, the wavelength corresponding to the first peak value is greater than the wavelength corresponding to the peak value of the emission spectrum of the blue light; the wavelength corresponding to the second peak value is greater than the wavelength corresponding to the peak value of the emission spectrum of the green light; the wavelength corresponding to the third peak value is greater than the wavelength corresponding to the peak value of the emission spectrum of the red light.

[0016] In an exemplary embodiment of the present disclosure, the light regulating layer is configured to reflect light with a first circular polarization direction and transmit light with a second circular polarization direction;

[0017] Wherein, the rotation directions of the first circular polarization direction and the second circular polarization direction are opposite.

[0018] In an exemplary embodiment of the present disclosure, the light regulating layer includes:

[0019] A liquid crystal structure, including multiple layers of liquid crystals stacked along the first direction, the arrangement directions of the liquid crystal molecules in each layer of liquid crystal are the same, and the arrangement directions of the liquid crystal molecules in any two adjacent layers of liquid crystals have an included angle, so that the liquid crystal structure is arranged in a spiral shape in the first direction;

[0020] Wherein, the rotation direction of the liquid crystal structure is the same as the rotation direction of the first circular polarization direction.

[0021] In an exemplary embodiment of the present disclosure, the light regulating layer is configured to change the wavelength corresponding to the peak value of the transmittance spectrum of the light emitted from the second light-emitting surface along the first direction by adjusting the average refractive index and / or the pitch of the liquid crystal structure, so that the wavelength corresponding to the peak value of the transmittance spectrum of the light emitted from the second light-emitting surface along the first direction is greater than the wavelength corresponding to the peak value of the emission spectrum of at least one color light emitted by the light-emitting device;

[0022] Wherein, the pitch of the liquid crystal structure is: in the first direction, the height corresponding to the liquid crystal structure rotating 360°.

[0023] In an exemplary embodiment of the present disclosure, the light regulating layer includes:

[0024] Three layers of the liquid crystal structures arranged in a stacked manner, and the three layers of the liquid crystal structures are respectively used for reflecting red light with a first helicity, green light with a first helicity, and blue light with a first helicity.

[0025] In an exemplary embodiment of the present disclosure, the light regulating layer includes:

[0026] Two layers of the liquid crystal structures arranged in a stacked manner, and the two layers of the liquid crystal structures are used for reflecting any two of red light with a first helicity, green light with a first helicity, and blue light with a first helicity, and the colors of the light reflected by each layer of the liquid crystal structures are different.

[0027] In an exemplary embodiment of the present disclosure, the two layers of the liquid crystal structures are respectively used for reflecting green light with a first helicity and blue light with a first helicity.

[0028] In an exemplary embodiment of the present disclosure, the anti-peeking film layer includes:

[0029] A barrier layer, including: a planarization layer and a plurality of barrier blocks arranged at intervals along the second direction, and the planarization layer covers the barrier blocks.

[0030] In an exemplary embodiment of the present disclosure, the anti-peeking film layer further includes:

[0031] A first alignment layer, disposed between the barrier layer and the light regulating layer, and the first alignment layer includes: a first filling layer and a plurality of reflection blocks arranged at intervals along the second direction, the first filling layer covers the reflection blocks, and the refractive index of the reflection blocks is less than the refractive index of the first filling layer, so that light can be totally reflected on the surface of the reflection blocks.

[0032] In an exemplary embodiment of the present disclosure, the anti-peeking film layer further includes:

[0033] A second alignment layer, disposed between the barrier layer and the light regulating layer, and the second alignment layer includes: a second filling layer and a plurality of light condensing structures arranged at intervals along the second direction, the second filling layer covers the light condensing structures, and the refractive index of the light condensing structures is greater than the refractive index of the second filling layer, so as to converge light by using the light condensing structures.

[0034] Another aspect of the present disclosure provides a display panel, including:

[0035] A light emitter;

[0036] An anti-peeking device, disposed on one side of the light emitting device, and the anti-peeking device is the anti-peeking device provided in some of the above embodiments, and the anti-peeking film layer is closer to the light emitting device than the light regulating layer.

[0037] In yet another aspect, the present disclosure provides a display device, characterized in that the display device includes the display panel provided in some of the above embodiments.

[0038] The technical solutions provided by the present disclosure can achieve the following beneficial effects:

[0039] The present disclosure provides an anti-peeping device, which can utilize an anti-peeping film layer to narrow the emission angle of the emitted light, so that the light will not be emitted at a large angle, thereby realizing the anti-peeping effect of the anti-peeping device.

[0040] Meanwhile, the anti-peeping device is provided with a light adjustment layer. By making the wavelength corresponding to the peak value of the transmission spectrum of the light emitted by the light adjustment layer in the first direction greater than the wavelength corresponding to the peak value of the emission spectrum of at least one color light emitted by the light-emitting device, and by making the wavelength corresponding to the peak value of the transmission spectrum of the light emitted from the light adjustment layer decrease from the light emitted in the first direction to the light emitted in the second direction, it is possible to make the wavelength corresponding to the peak value of the transmission spectrum of the light emitted from the light adjustment layer gradually approach the wavelength corresponding to the peak value of the emission spectrum of the light emitted by the light-emitting device.

[0041] Since the transmittance of the light adjustment layer rises slowly at the beginning, the reflectivity of the light adjustment layer decreases slowly at this stage, so that the weakening rate of the light emission brightness can be slowed down, the brightness of the light emitted at a small angle can be increased, and thus the brightness of the user viewing at a small viewing angle can be increased, improving the display effect.

[0042] As the light emission angle further increases, when the wavelength corresponding to the peak value of the transmission spectrum of the light emitted from the light adjustment layer is almost close to the wavelength corresponding to the peak value of the emission spectrum of the light emitted by the light-emitting device, the transmittance of the light adjustment layer will rise sharply, causing the reflectivity of the light adjustment layer to drop sharply at this stage. At this time, the light emission brightness will be sharply weakened. Until the wavelength corresponding to the peak value of the transmission spectrum of the light emitted from the light adjustment layer coincides with the wavelength corresponding to the peak value of the emission spectrum of the light emitted by the light-emitting device, the deterioration of the light emission brightness is the most serious, and the light emission brightness is the lowest at this time.

[0043] Since the reflectivity of the light adjustment layer drops sharply at this stage, when the light has a small emission angle, the wavelength corresponding to the peak value of the transmission spectrum of the light emitted by the light adjustment layer can coincide with the wavelength corresponding to the peak value of the emission spectrum of the light emitted by the light-emitting device, and thus the lowest light emission brightness can be obtained at a small emission angle, and therefore the cut-off angle of the anti-peeping device can be reduced, achieving a better anti-peeping effect.

[0044] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] The accompanying drawings here are incorporated into the specification and constitute a part of this specification, showing embodiments consistent with the present disclosure, and are used together with the specification to explain the principles of the present disclosure. Obviously, the accompanying drawings in the following description are only some embodiments of the present disclosure, and those of ordinary skill in the art can obtain other drawings based on these drawings without creative efforts.

[0046] Figure 1 Shows a schematic structural diagram of a display panel according to an exemplary embodiment of the present disclosure;

[0047] Figure 2 Shows a schematic structural diagram of a display panel according to another exemplary embodiment of the present disclosure;

[0048] Figure 3 Shows a schematic structural diagram of a display panel according to still another exemplary embodiment of the present disclosure;

[0049] Figure 4 Shows a schematic curve diagram of the transmittance spectrum wavelength of a light modulation layer and the emission spectrum wavelength of a light-emitting device according to an exemplary embodiment of the present disclosure;

[0050] Figure 5 Shows a schematic curve diagram of the brightness attenuation of red light when a light modulation layer is provided and when it is not provided according to an exemplary embodiment of the present disclosure;

[0051] Figure 6 Shows a schematic curve diagram of the brightness attenuation of green light when a light modulation layer is provided and when it is not provided according to an exemplary embodiment of the present disclosure;

[0052] Figure 7 Shows a schematic curve diagram of the brightness attenuation of blue light when a light modulation layer is provided and when it is not provided according to an exemplary embodiment of the present disclosure;

[0053] Figure 8 Shows a schematic flow diagram of a method for manufacturing an anti-peeping device according to an exemplary embodiment of the present disclosure;

[0054] Figure 9 Shows a schematic flow diagram of a method for manufacturing a display panel according to an exemplary embodiment of the present disclosure.

[0055] Explanation of reference numerals:

[0056] 1. Anti-peeping device; 11. Anti-peeping film layer; 111. Barrier layer; 1111. Planarization layer; 1112. Barrier block; 112. First barrier layer; 1121. First planarization layer; 1122. First barrier block; 113. Second barrier layer; 1131. Second planarization layer; 1132. Second barrier block; 114. First alignment layer; 1141. First filling layer; 1142. Reflective block; 115. Second alignment layer; 1151. Second filling layer; 1152. Light condensing structure; 12. Light adjustment layer; 121. Liquid crystal structure; 13. Polarizing layer;

[0057] 2. Light-emitting device; 21. Substrate; 22. Buffer layer; 23. First electrode; 24. Gate layer; 25. Source-drain electrode; 26. Interlayer dielectric layer; 27. Third planarization layer; 28. Pixel definition layer; 29. Second electrode layer; 30. Fourth planarization layer;

[0058] 3. Display panel;

[0059] X. First direction; Y. Second direction; Z. Third direction. Detailed implementation manners

[0060] Example embodiments will now be described more fully with reference to the accompanying drawings. However, the example embodiments can be implemented in various forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the example embodiments to those skilled in the art. Like reference numerals in the figures denote like or similar structures, and thus their detailed descriptions will be omitted.

[0061] Although relative terms such as "upper" and "lower" are used in this specification to describe the relative relationship of one component of an icon to another component, these terms are used in this specification only for convenience, for example, according to the directions of the examples described in the accompanying drawings. It can be understood that if the device of the icon is turned upside down, the component described as "upper" will become the component described as "lower". When a structure is "on" another structure, it may mean that a structure is integrally formed on another structure, or that a structure is "directly" disposed on another structure, or that a structure is "indirectly" disposed on another structure through another structure.

[0062] The terms "a", "an", "the", and "said" are used to denote the presence of one or more elements / components / etc.; the terms "comprising" and "having" are used to mean an open inclusion and mean that there may be additional elements / components / etc. in addition to the listed elements / components / etc.; the terms "first" and "second", etc. are used only as labels and are not a limitation on the quantity of their objects.

[0063] Some embodiments of the present disclosure provide a privacy protection device 1, such as Figures 1 to 3 shown. The privacy protection device 1 can be applied to a display panel 3 to enable the display panel 3 to have a privacy protection effect, and can improve the display effect and cut-off angle of the display panel 3.

[0064] The privacy protection device 1 may include: a privacy protection film layer 11. The privacy protection film layer 11 may have a first light incident surface and a first light exit surface. The privacy protection film layer 11 can narrow the emission angle of the light emitted from the first light exit surface, so that the light will not be emitted at a large angle, thereby realizing the privacy protection effect of the privacy protection device 1.

[0065] In some embodiments, the privacy protection film layer 11 may include: a barrier layer 111. The barrier layer 111 may include a plurality of barrier blocks 1112 arranged at intervals along a second direction Y. The second direction Y may be perpendicular to a first direction X, and the first direction X may be perpendicular to the first light exit surface. In this embodiment, light can only pass through the gaps between the barrier blocks 1112, so that the barrier blocks 1112 can be used to block the light emitted at a large angle, reduce the emission angle of the light that can be emitted from the first light exit surface, thereby narrowing the viewing angle range of the user to view the picture, and improving the privacy protection effect of the privacy protection film layer 11. The barrier blocks 1112 may be a patterned black matrix, but are not limited thereto. The material of the barrier blocks may be a black photoresist, but is not limited thereto. The material of the barrier blocks may also be ink, etc.

[0066] It should be noted that the emission angle of the light described herein refers to the included angle between the emission direction of the light and the first direction X. When the emission angle of the light decreases, the emission direction of the light can approach the first direction X. When the emission angle of the light increases, the emission direction of the light can approach the second direction Y.

[0067] In some embodiments, when the privacy protection device 1 is disposed on the light-emitting device 2, the projection of the barrier blocks 1112 in the first direction X and the projection of the light-emitting area of the light-emitting device 2 in the first direction X have at most an overlap, so as to avoid excessive blocking of the small-angle light emitted by the light-emitting device 2 by the barrier blocks 1112. Further, the projection of the barrier blocks 1112 in the first direction X and the projection of the light-emitting area of the light-emitting device 2 in the first direction X do not have an overlap, so as to further avoid blocking of the small-angle light emitted by the light-emitting device 2 by the barrier blocks 1112, and further ensure the light output effect of the display panel 3.

[0068] The barrier layer 111 may further include a planarization layer 1111. The planarization layer 1111 may cover the barrier blocks 1112 to make the surface of the barrier layer 111 flat, facilitating the setting of subsequent film layers.

[0069] The anti-peeping film layer 11 may include at least two barrier layers 111 arranged in a stacked manner. The at least two barrier layers 111 may include: a first barrier layer 112 and a second barrier layer 113. At this time, one side of the first barrier layer 112 facing away from the second barrier layer 113 may be a first light incident surface, and one side of the second barrier layer 113 facing away from the first barrier layer 112 may be a first light exit surface.

[0070] The first barrier layer 112 may include: a first planarization layer 1121 and a plurality of first barrier blocks 1122 arranged at intervals along the second direction Y. The first planarization layer 1121 may cover the first barrier blocks 1122. The second barrier layer 113 may be disposed on the surface of the first planarization layer 1121. The second barrier layer 113 may include: a second planarization layer 1131 and a plurality of second barrier blocks 1132 arranged at intervals along the second direction Y. The second planarization layer 1131 may cover the second barrier blocks 1132. With such an arrangement, the first barrier layer 112 can be used to block the light emitted at a large angle. At this time, the light emitted at a smaller angle will pass through the gaps between the first barrier blocks 1122. The second barrier layer 113 can block some of the light emitted at a smaller angle, further reducing the exit angle of the light that can exit from the first light exit surface. In this way, the viewing angle range that the user can view the picture can be further narrowed, and the anti-peeping effect of the anti-peeping film layer 11 can be further improved.

[0071] In some embodiments, as Figure 2 shown, the anti-peeping film layer 11 may further include: a first light direction adjusting layer 114. The first light direction adjusting layer 114 may be disposed on the light exit side of the barrier layer 111. At this time, one side of the barrier layer 111 facing away from the first light direction adjusting layer 114 may be a first light incident surface, and one side of the first light direction adjusting layer 114 facing away from the barrier layer 111 may be a first light exit surface.

[0072] The first light direction adjusting layer 114 may include: a first filling layer 1141 and a plurality of reflection blocks 1142 arranged at intervals along the second direction Y. The first filling layer 1141 may cover the reflection blocks 1142 to make the surface of the first light direction adjusting layer 114 flat, facilitating the setting of subsequent film layers.

[0073] The refractive index of the reflection block 1142 can be less than that of the first filling layer 1141, so that light can undergo total internal reflection on the surface of the reflection block 1142. With such a setting, light rays with a relatively large exit angle can be deflected towards the direction closer to the first direction X after total internal reflection by the reflection block 1142. Therefore, the exit angle of the light can be reduced, thereby further narrowing the viewing angle range that the user can view the picture, and further improving the anti-peeping effect of the anti-peeping film layer 11. Moreover, since the light rays reflected by the reflection block 1142 converge towards the first direction X, the amount of light rays exiting at a small angle can be increased, thereby increasing the intensity of the light rays exiting at a small angle, improving the small-angle light-emitting efficiency of the anti-peeping device 1, and enhancing the viewing effect of the user.

[0074] The refractive index range of the reflection block 1142 can be from 1.45 to 1.55, for example: 1.45, 1.46, 1.47, 1.48, 1.49, 1.50, 1.51, 1.52, 1.53, 1.54, 1.55, etc. The refractive index range of the first filling layer 1141 can be 1.65 - 1.75, for example: 1.65, 1.66, 1.67, 1.68, 1.69, 1.70, 1.71, 1.72, 1.73, 1.74, 1.75, etc. However, it is not limited to this. The refractive indices of the reflection block 1142 and the first filling layer 1141 can also be other refractive indices, which can be selected and set according to the actual situation.

[0075] The materials of the reflection block 1142 and the first filling layer 1141 can both be photoresist, and the refractive index of the photoresist used for the reflection block 1142 is less than that of the photoresist used for the first filling layer 1141. However, it is not limited to this. The reflection block 1142 and the first filling layer 1141 can also use other materials, which are all within the protection scope of the present disclosure.

[0076] In some embodiments, when the anti-peeping device 1 is disposed on the light-emitting device 2, the projection of the reflection block 1142 in the first direction X and the projection of the light-emitting area of the light-emitting device 2 in the first direction X have at most an overlap, so as to avoid excessive blocking of the small-angle light rays emitted by the light-emitting device 2 by the reflection block 1142. Further, the projection of the reflection block 1142 in the first direction X and the projection of the light-emitting area of the light-emitting device 2 in the first direction X do not have an overlap, so as to further avoid blocking of the small-angle light rays emitted by the light-emitting device 2 by the reflection block 1142, and further ensure the light-emitting effect of the display panel 3.

[0077] In some other embodiments, such as Figure 3As shown, the anti-peeping film layer 11 may further include: a second alignment layer 115. The second alignment layer 115 may be disposed on the light-emitting side of the blocking layer 111. At this time, one side of the blocking layer 111 facing away from the second alignment layer 115 may be the first light-incident surface, and one side of the second alignment layer 115 facing away from the blocking layer 111 may be the first light-emitting surface.

[0078] The second alignment layer 115 may include: a second filling layer 1151 and a plurality of light-concentrating structures 1152 spaced apart along the second direction Y. The second filling layer 1151 may cover the light-concentrating structures 1152 to make the surface of the second alignment layer 115 flat, facilitating the setting of subsequent film layers.

[0079] The refractive index of the light-concentrating structure 1152 may be greater than the refractive index of the second filling layer 1151. By using the light-concentrating structure 1152 to converge light, light with a relatively large emission angle can be deflected towards the direction close to the first direction X after being converged by the light-concentrating structure 1152. Therefore, the emission angle of the light can be reduced, further narrowing the viewing angle range of the user, and further improving the anti-peeping effect of the anti-peeping film layer 11. Moreover, since the light-concentrating structure 1152 can converge light towards the first direction X, the amount of light emitted at a small angle can be increased, thereby enhancing the intensity of the light emitted at a small angle and improving the small-angle light-emitting efficiency of the anti-peeping device 1, enhancing the viewing effect of the user.

[0080] The light-concentrating structure 1152 may be a convex lens structure, and a plurality of light-concentrating structures 1152 may form a convex lens array to improve its light-converging effect. However, it is not limited thereto. The light-concentrating structure 1152 may not be a convex lens and may also be other structures with a light-converging effect, which can be selected and set according to actual needs, and all are within the protection scope of the present disclosure.

[0081] The material of the light-concentrating structure 1152 and the material of the second filling layer 1151 may both be photoresist, and the refractive index of the photoresist used for the light-concentrating structure 1152 is greater than the refractive index of the photoresist used for the second filling layer 1151. However, it is not limited thereto. The light-concentrating structure 1152 and the second filling layer 1151 may also use other materials, and all are within the protection scope of the present disclosure.

[0082] In some embodiments, when the anti-peeping device 1 is disposed on the light-emitting device 2, the projection of the light-concentrating structure 1152 in the first direction X and the projection of the light-emitting area of the light-emitting device 2 in the first direction X at least overlap to ensure that the light emitted by the light-emitting device 2 can enter the light-concentrating structure 1152 for convergence, thereby ensuring the amount of light emitted at a small angle, ensuring the intensity of the light emitted at a small angle, improving the small-angle light-emitting efficiency of the anti-peeping device 1, and enhancing the viewing effect of the user.

[0083] In some embodiments, as Figures 1 to 4 shown, the anti-peeping device 1 may further include: a light adjustment layer 12. The light adjustment layer 12 may be located on the side of the first light-emitting surface of the anti-peeping film layer 11 away from the first light-incident surface. When the anti-peeping device 1 includes a first blocking layer 112 and a second blocking layer 113, the light adjustment layer 12 may be located on the side of the second blocking layer 113 facing away from the first blocking layer 112; when the anti-peeping device 1 includes a blocking layer 111 and a first light-directing layer 114, the first light-directing layer 114 may be located between the blocking layer 111 and the light adjustment layer 12, that is: the light adjustment layer 12 may be located on the side of the first light-directing layer 114 facing away from the blocking layer 111; when the anti-peeping device 1 includes a blocking layer 111 and a second light-directing layer 115, the second light-directing layer 115 may be located between the blocking layer 111 and the light adjustment layer 12, that is: the light adjustment layer 12 may be located on the side of the second light-directing layer 115 facing away from the blocking layer 111.

[0084] The light adjustment layer 12 may have a second light-incident surface and a second light-emitting surface. The light emitted from the first light-emitting surface may enter the light adjustment layer 12 through the second light-incident surface to perform light adjustment within the light adjustment layer 12, so that the wavelength corresponding to the peak of the transmission spectrum ( Figure 4 the curve indicated by W in Figure 4 of the light emitted from the second light-emitting surface along the first direction X) is greater than the wavelength corresponding to the peak of the emission spectrum of at least one color of light emitted by the light-emitting device 2. For example: the light-emitting device 2 can emit blue light, green light, and red light. The wavelength corresponding to the peak of the transmission spectrum of the light emitted from the second light-emitting surface along the first direction X may be greater than the wavelength corresponding to the peak of the emission spectrum of blue light ( Figure 4 the curve indicated by B in Figure 4 ; or, the wavelength corresponding to the peak of the transmission spectrum of the light emitted from the second light-emitting surface along the first direction X may be greater than the wavelength corresponding to the peak of the emission spectrum of green light (

[0085] the curve indicated by G in

[0086] ; or, the wavelength corresponding to the peak of the transmission spectrum of the light emitted from the second light-emitting surface along the first direction X may be greater than the wavelength corresponding to the peak of the emission spectrum of red light ( Figure 4 the curve indicated by R in

[0085] ). By setting it in this way, the brightness of the light emitted along the first direction X can be increased, and thus the brightness of the user viewing at a small viewing angle can be increased, improving the display effect.

[0086] Moreover, after being adjusted by the light adjustment layer 12, the wavelength corresponding to the peak of the transmission spectrum of the light emitted from the light adjustment layer 12 decreases from the light emitted along the first direction X to the light emitted along the second direction Y, and thus it can be made that the wavelength corresponding to the peak of the transmission spectrum of the light emitted from the light adjustment layer 12 gradually approaches the wavelength corresponding to the peak of the emission spectrum of the light-emitting device 2.

[0086] Since the transmittance of the light modulation layer 12 rises slowly at the beginning, the reflectivity of the light modulation layer 12 decreases slowly at this stage, so that the rate of decrease in the light output brightness can be slowed down, the brightness of the light emitted at a small angle can be increased, and thus the brightness of the user viewing at a small viewing angle can be increased, improving the display effect.

[0087] As the light emission angle further increases, when the wavelength corresponding to the peak of the transmittance spectrum of the light emitted from the light modulation layer 12 is close to the wavelength corresponding to the peak of the emission spectrum of the light emitting device 2, the transmittance of the light modulation layer 12 will increase sharply, causing the reflectivity of the light modulation layer 12 to decrease sharply at this stage. At this time, the light output brightness will decrease sharply. Until the wavelength corresponding to the peak of the transmittance spectrum of the light emitted from the light modulation layer 12 coincides with the wavelength corresponding to the peak of the emission spectrum of the light emitting device 2, the deterioration of the light output brightness is the most serious, and the light output brightness is the lowest at this time.

[0088] Since the reflectivity of the light modulation layer 12 decreases sharply at this stage, when the light has a small emission angle, the wavelength corresponding to the peak of the transmittance spectrum of the light emitted from the light modulation layer 12 can coincide with the wavelength corresponding to the peak of the emission spectrum of the light emitting device 2, and thus the lowest light output brightness can be achieved at a small emission angle, and therefore the cut-off angle of the anti-peeping device 1 can be reduced, achieving a better anti-peeping effect.

[0089] In some embodiments, as Figure 4 shown, the wavelength corresponding to the peak of the transmittance spectrum of the light emitted from the second light emitting surface along the first direction X can be located between the wavelengths corresponding to the peaks of the emission spectra of any two colors of light. Or, the wavelength corresponding to the peak of the transmittance spectrum of the light emitted from the second light emitting surface along the first direction X is greater than the wavelength corresponding to the peak of the emission spectrum of red light.

[0090] Furthermore, the transmittance spectrum of the light emitted from the second light emitting surface along the first direction X has a first peak V1, a second peak V2, and a third peak V3. Among them, the wavelength corresponding to the first peak V1 is greater than the wavelength corresponding to the peak of the emission spectrum of blue light. The wavelength corresponding to the second peak V2 is greater than the wavelength corresponding to the peak of the emission spectrum of green light. The wavelength corresponding to the third peak V3 is greater than the wavelength corresponding to the peak of the emission spectrum of red light. That is: the wavelength corresponding to the first peak V1 can be located between the wavelength corresponding to the peak of the emission spectrum of blue light and the wavelength corresponding to the peak of the emission spectrum of green light, and the wavelength corresponding to the second peak V2 can be located between the wavelength corresponding to the peak of the emission spectrum of green light and the wavelength corresponding to the peak of the emission spectrum of red light. Such a setting can reduce the color deviation of the emitted light. And, the brightness of the light emitted at a small angle can be further increased, and thus the brightness of the user viewing at a small viewing angle can be further increased, improving the display effect. As Figures 5 to 7R1, G1, and B1 therein respectively represent the change curves of red light, green light, and blue light emitted from the light adjustment layer 12 after the light adjustment layer 12 is set. As Figures 5 to 7 R2, G2, and B2 therein respectively represent the change curves of red light, green light, and blue light emitted from the anti-peeping film layer 11 when the light adjustment layer 12 is not set. From Figure 5 and Figure 7 the above technical effects can be seen.

[0091] In some embodiments, the first direction X may also be perpendicular to the second light-emitting surface.

[0092] The wavelength corresponding to the peak value of the transmission spectrum of the light emitted from the second light-emitting surface along the third direction Z may be the same as the wavelength corresponding to the peak value of the emission spectrum of at least one color of light emitted by the light-emitting device 2. Among them, the third direction Z may be located between the first direction X and the second direction Y, and the third direction Z and the first direction X may have a first included angle β, and the first included angle β is 15° to 45°. For example, the first included angle β may be 15°, 20°, 25°, 30°, 35°, 40°, 45°, etc. With such a setting, when the emission angle of the light is 15° to 45°, the wavelength corresponding to the peak value of the transmission spectrum of the light emitted from the light adjustment layer 12 can coincide with the wavelength corresponding to the peak value of the emission spectrum of the light-emitting device 2. Furthermore, the light emission brightness can be the lowest at the emission angle of 15° to 45°. Therefore, the cut-off angle of the anti-peeping device 1 can be further reduced, and the anti-peeping effect can be further improved.

[0093] Furthermore, the first included angle β may be 20° to 30°. For example, the first included angle β may be 20°, 21°, 22°, 23°, 24°, 25°, 26°, 27°, 28°, 29°, 30°, etc. With such a setting, good anti-peeping effect and good viewing effect can be ensured. In some embodiments, when the transmission spectrum of the light emitted from the second light-emitting surface along the first direction X has a first peak value V1, a second peak value V2, and a third peak value V3, and the emission direction of the light is the third direction, the wavelength corresponding to the first peak value V1 may be the same as the wavelength corresponding to the peak value of the emission spectrum of blue light, the wavelength corresponding to the second peak value V2 may be the same as the wavelength corresponding to the peak value of the emission spectrum of green light, and the wavelength corresponding to the third peak value V3 may be the same as the wavelength corresponding to the peak value of the emission spectrum of red light.

[0094] In some embodiments, the light regulating layer 12 may be configured to reflect light with a first circular polarization and transmit light with a second circular polarization. The first circular polarization and the second circular polarization may be opposite to each other. That is, it can be understood that the light with the second circular polarization can directly pass through the light regulating layer 12 and exit. The light with the first circular polarization will be reflected back by the light regulating layer 12 and then reflected again by the light emitting device 2, so that the light with the first circular polarization can be converted into the light with the second circular polarization and then exit through the light regulating layer 12. Thus, by adjusting the reflectivity of the light regulating layer 12 to the light with the first circular polarization, the light output efficiency of the anti-peeping device 1 can be adjusted. When the reflectivity of the light regulating layer 12 to the light with the first circular polarization is higher, the light output efficiency of the anti-peeping device 1 is higher.

[0095] The light regulating layer 12 may include: a liquid crystal structure 121. The liquid crystal structure 121 may be a cholesteric liquid crystal, but is not limited thereto. The liquid crystal structure 121 may include multiple layers of liquid crystals stacked along a first direction X. The arrangement directions of the liquid crystal molecules in each layer of liquid crystal are the same, and the arrangement directions of the liquid crystal molecules in any two adjacent layers of liquid crystals have an included angle, so that the liquid crystal structure 121 is arranged in a spiral shape in the first direction X. Wherein, the rotation direction of the liquid crystal structure 121 is the same as the rotation direction of the first circular polarization. Thus, the liquid crystal structure 121 can be used to reflect the light with the first circular polarization and transmit the light with the second circular polarization.

[0096] In some embodiments, the wavelength corresponding to the peak value of the transmission spectrum of the light exiting from the second light output surface of the light regulating layer 12 along the first direction X may be:

[0097] λ = nPcosα;

[0098] Wherein, λ is the wavelength corresponding to the peak value of the transmission spectrum of the light exiting from the second light output surface of the light regulating layer 12 along the first direction X; n is the average refractive index of the liquid crystal structure 121; P is the pitch of the liquid crystal structure 121. The pitch P of the liquid crystal structure 121 is: in the first direction X, the height corresponding to the rotation of the liquid crystal structure 121 by 360°; α is the exit angle of the light. It should be noted that the wavelength corresponding to the transmission spectrum is also the wavelength corresponding to the reflection spectrum of the liquid crystal structure 121.

[0099] When the average refractive index n of the liquid crystal and the pitch P of the liquid crystal structure 121 remain unchanged, the wavelength corresponding to the transmission spectrum decreases as the exit angle α of the light increases. As a result, the transmittance of the liquid crystal structure 121 increases and the reflectivity decreases, thereby weakening the brightness of the light exiting from the second light exit surface at the exit angle α. Conversely, the wavelength λ corresponding to the transmission spectrum increases as the exit angle α of the light decreases. As a result, the transmittance of the liquid crystal structure 121 decreases and the reflectivity increases, thereby increasing the brightness of the light exiting from the second light exit surface at the exit angle α. Thus, through the above settings, the user can see a brighter display screen when viewing at a small angle and cannot see the display screen when viewing at a large angle, thereby further improving the anti-peeping effect.

[0100] The light adjustment layer 12 can be configured to change the wavelength λ corresponding to the peak value of the transmission spectrum of the light exiting from the second light exit surface along the first direction X by adjusting the average refractive index n and / or the pitch P of the liquid crystal structure 121, so that the wavelength λ corresponding to the peak value of the transmission spectrum of the light exiting from the second light exit surface along the first direction X is greater than the wavelength corresponding to the peak value of the emission spectrum of at least one color light emitted by the light emitting device 2.

[0101] With such settings, the present disclosure can quickly and simply change the wavelength λ corresponding to the peak value of the transmission spectrum by adjusting the average refractive index n and / or the pitch P of the liquid crystal structure 121.

[0102] In some embodiments, the light adjustment layer 12 may include: three layers of liquid crystal structures 121 arranged in a stack, and the three layers of liquid crystal structures 121 can be respectively used to reflect red light with the first helicity, green light with the first helicity, and blue light with the first helicity. With such settings, the light extraction efficiency of the light adjustment layer 12 can be improved, and the light extraction efficiency gain of white light can exceed 40%.

[0103] In other embodiments, the light adjustment layer 12 may include: two layers of liquid crystal structures 121 arranged in a stack, and the two layers of liquid crystal structures 121 can be used to reflect any two of red light with the first helicity, green light with the first helicity, and blue light with the first helicity, and the colors of the light reflected by each layer of liquid crystal structure 121 are different.

[0104] Since the light adjustment layer 12 in the previous embodiment has three layers of liquid crystal structures 121, any two layers of liquid crystal structures 121 need to be connected by a glue material, resulting in a relatively complex manufacturing process, a relatively thick overall thickness, and a relatively large haze. At the same time, when the light adjustment layer 12 has only one layer of liquid crystal structure 121, its light extraction efficiency gain for white light is relatively low, seriously affecting the viewing experience.

[0105] Thus, through the above settings, the present disclosure can select the liquid crystal structure 121 that can reflect light of a specific color, and form the light adjustment layer 12 with two layers of liquid crystal structures 121 through a pairwise combination method. For example: two layers of liquid crystal structures 121 that can reflect red light with the first helicity and green light with the first helicity can be selected to form the light adjustment layer 12; alternatively, two layers of liquid crystal structures 121 that can reflect red light with the first helicity and blue light with the first helicity can be selected to form the light adjustment layer 12; alternatively, two layers of liquid crystal structures 121 that can reflect green light with the first helicity and blue light with the first helicity can be selected to form the light adjustment layer 12. In this way, while ensuring that the light adjustment layer 12 has a high light extraction efficiency, the process difficulty and the thickness of the light adjustment layer 12 can be reduced, the manufacturing cost can be effectively controlled, and a low haze can be achieved.

[0106] In some embodiments, the two layers of liquid crystal structures 121 can be respectively used to reflect green light with the first helicity and blue light with the first helicity. With such a setting, the light extraction efficiency of the finally emitted white light can be greatly improved, and the white light efficiency gain can be greater than or equal to 30%, which is much higher than other combination methods (the white light efficiency gains of other combination methods are all between 28% and 29%).

[0107] At the same time, when the anti-peeping device 1 includes the anti-peeping film layer 11 with the first alignment layer 114 and the light adjustment layer 12 with two layers of liquid crystal structures 121 stacked, while ensuring that the anti-peeping device 1 has a high light extraction efficiency, the first alignment layer 114 can be used to improve the lifetime color shift problem of the light adjustment layer 12, so as to balance the improvement ratio of the light extraction efficiency of each color sub-pixel and improve the display effect and the viewing experience of users.

[0108] In some embodiments, the anti-peeping film layer 11 may further include: a polarizing layer 13. The polarizing layer 13 can be disposed on the side of the second light-emitting surface away from the second light-incident surface, and is used to convert the light with the second helicity transmitted through the light adjustment layer 12 into linearly polarized light.

[0109] Some embodiments of the present disclosure provide a manufacturing method of an anti-peeping device 1. The manufacturing method of the anti-peeping device 1 can be used to manufacture the anti-peeping device 1 described above, such as Figures 1 to 4 , and Figure 8 As shown, the manufacturing method of the anti-peeping device 1 may include:

[0110] Step S10: Manufacture the anti-peeping film layer 11, and the anti-peeping film layer 11 has a first light-incident surface and a first light-emitting surface.

[0111] Step S20: Form the light adjustment layer 12 on the side of the first light-emitting surface away from the first light-incident surface.

[0112] Among them, the anti-peeping film layer 11 can narrow the emission angle of the light emitted from the first light-emitting surface; the light adjustment layer 12 can have a second light-incident surface and a second light-emitting surface, and the light emitted from the first light-emitting surface can enter the light adjustment layer 12 through the second light-incident surface; the wavelength corresponding to the peak value of the transmission spectrum of the light emitted from the second light-emitting surface along the first direction X is greater than the wavelength corresponding to the peak value of the emission spectrum of at least one color of light emitted by the light-emitting device 2, and the wavelength corresponding to the peak value of the transmission spectrum of the light emitted from the second light-emitting surface decreases from the light emitted along the first direction X to the light emitted along the second direction Y; the first direction X is perpendicular to the second light-emitting surface, and the second direction Y is perpendicular to the first direction X.

[0113] It should be noted that since the beneficial effects of the structure of the anti-peeping device 1 have been described in detail in the previous theme of the present disclosure. Therefore, the beneficial effects of the structure of the anti-peeping device 1 will not be elaborated in this theme, and reference can be made to the above description, which is also within the protection scope of the present disclosure.

[0114] Some embodiments of the present disclosure provide a manufacturing method of an anti-peeping device 1. The anti-peeping device 1 manufactured by this manufacturing method of the anti-peeping device 1 can use the anti-peeping film layer 11 to narrow the emission angle of the emitted light, so that the light will not be emitted at a large angle, thereby achieving the anti-peeping effect of the anti-peeping device 1.

[0115] Moreover, the anti-peeping device 1 is provided with a light adjustment layer 12. The light adjustment layer 12 can have a second light-incident surface and a second light-emitting surface, and the light emitted from the first light-emitting surface can enter the light adjustment layer 12 through the second light-incident surface to perform light adjustment within the light adjustment layer 12, so that the wavelength corresponding to the peak value of the transmission spectrum ( Figure 4 the curve indicated by W in) of the light emitted from the second light-emitting surface along the first direction X is greater than the wavelength corresponding to the peak value of the emission spectrum of at least one color of light emitted by the light-emitting device 2. For example: the light-emitting device 2 can emit blue light, green light, and red light. The wavelength corresponding to the peak value of the transmission spectrum of the light emitted from the second light-emitting surface along the first direction X can be greater than the wavelength corresponding to the peak value of the emission spectrum ( Figure 4 the curve indicated by B in) of the blue light; or, the wavelength corresponding to the peak value of the transmission spectrum of the light emitted from the second light-emitting surface along the first direction X can be greater than the wavelength corresponding to the peak value of the emission spectrum ( Figure 4 the curve indicated by G in) of the green light; or, the wavelength corresponding to the peak value of the transmission spectrum of the light emitted from the second light-emitting surface along the first direction X can be greater than the wavelength corresponding to the peak value of the emission spectrum ( Figure 4 the curve indicated by R in) of the red light. With such a setting, the brightness of the light emitted along the first direction X can be improved, and thus the brightness of the user's viewing at a small viewing angle can be improved, and the display effect can be improved.

[0116] Moreover, after the adjustment by the light adjustment layer 12, the wavelength corresponding to the peak value of the transmittance spectrum of the light emitted from the light adjustment layer 12 decreases from the light emitted in the first direction X to the light emitted in the second direction Y, which can make the wavelength corresponding to the peak value of the transmittance spectrum of the light emitted from the light adjustment layer 12 gradually approach the wavelength corresponding to the peak value of the emission spectrum emitted by the light-emitting device 2.

[0117] Since the transmittance of the light adjustment layer 12 rises slowly near the initial stage, the reflectivity of the light adjustment layer 12 decreases slowly at this stage, so that the weakening rate of the light output brightness can be slowed down, the brightness of the light emitted at a small angle can be increased, and thus the brightness of the user viewing at a small viewing angle can be increased, improving the display effect.

[0118] As the light emission angle further increases, when the wavelength corresponding to the peak value of the transmittance spectrum of the light emitted from the light adjustment layer 12 is about to coincide with the wavelength corresponding to the peak value of the emission spectrum emitted by the light-emitting device 2, the transmittance of the light adjustment layer 12 will rise sharply, making the reflectivity of the light adjustment layer 12 decrease sharply at this stage. At this time, the light output brightness will decrease sharply. Until the wavelength corresponding to the peak value of the transmittance spectrum of the light emitted from the light adjustment layer 12 coincides with the wavelength corresponding to the peak value of the emission spectrum emitted by the light-emitting device 2, the deterioration of the light output brightness is the most serious, and the light output brightness is the lowest at this time.

[0119] Since the reflectivity of the light adjustment layer 12 decreases sharply at this stage, when the light has a small emission angle, the wavelength corresponding to the peak value of the transmittance spectrum of the light emitted from the light adjustment layer 12 can coincide with the wavelength corresponding to the peak value of the emission spectrum emitted by the light-emitting device 2, and thus the lowest light output brightness can be obtained at a small emission angle, so that the cut-off angle of the anti-peeping device 1 can be reduced, and a better anti-peeping effect can be achieved.

[0120] In step S10, a blocking layer 111 can be formed. For example, a first blocking layer 112 can be formed, and a second blocking layer 113 can be formed on the surface of the first blocking layer 112. Specifically, a plurality of first blocking blocks 1122 arranged at intervals in the second direction Y can be formed, and a first planarization layer 1121 covering the first blocking blocks 1122 can be formed. Moreover, a second blocking block 1132 can be formed on the surface of the first planarization layer 1121, and a second planarization layer 1131 covering the second blocking blocks 1132 can be formed, thereby forming the blocking layer 111.

[0121] In some embodiments, a first alignment layer 114 can be formed on the surface of the blocking layer 111. Specifically, a plurality of reflection blocks 1142 arranged at intervals in the second direction Y can be formed on the surface of the blocking layer 111, and a first filling layer 1141 covering the reflection blocks 1142 can be formed to form the first alignment layer 114.

[0122] In some other embodiments, a second alignment layer 115 may be formed on the surface of the blocking layer 111. Specifically, a plurality of light condensing structures 1152 spaced along the second direction Y may be formed on the surface of the blocking layer 111, and a second filling layer 1151 may be formed to cover the light condensing structures 1152, so as to form the second alignment layer 115.

[0123] In step S20, the light regulating layer 12 may include a liquid crystal structure 121. By adjusting the average refractive index n and / or the pitch P of the liquid crystal structure 121, the wavelength λ corresponding to the peak value of the transmission spectrum of the light emitted from the second light emitting surface along the first direction X can be changed, so that the wavelength λ corresponding to the peak value of the transmission spectrum of the light emitted from the second light emitting surface along the first direction X is greater than the wavelength corresponding to the peak value of the emission spectrum of at least one color light emitted by the light emitting device 2.

[0124] In some embodiments, the manufacturing method of the anti-peeping device 1 may further include: forming a polarizing layer 13 on the side of the second light emitting surface away from the second light incident surface, so as to convert the light with the second circular polarization direction transmitted through the light regulating layer 12 into linearly polarized light.

[0125] Some embodiments of the present disclosure provide a display panel 3, as Figures 1 to 4 shown, the display panel 3 may include: a light emitting device 2 and an anti-peeping device 1. The light emitting device 2 may be an OLED (Organic Light-Emitting Diode), a QLED (Quantum Dot Light Emitting Diodes), an LCD (Liquid Crystal Display), etc. The anti-peeping device 1 is disposed on the side of the light emitting device 2 away from the substrate 21. The anti-peeping device 1 may be the anti-peeping device 1 described above. The anti-peeping film layer 11 may be closer to the light emitting device 2 than the light regulating layer 12.

[0126] It should be noted that since the structural beneficial effects of the anti-peeping device 1 have been elaborated in detail in the previous topic of the present disclosure. Therefore, the structural beneficial effects of the anti-peeping device 1 will not be elaborated again in this topic, and reference may be made to the above description, which is also within the protection scope of the present disclosure.

[0127] Some embodiments of the present disclosure provide a display panel 3 including an anti-peeping device 1. The anti-peeping device 1 is provided with a light regulating layer 12. The light regulating layer 12 may have a second light incident surface and a second light emitting surface. The light emitted from the first light emitting surface may enter the light regulating layer 12 through the second light incident surface, so as to perform light regulation within the light regulating layer 12, so that the transmission spectrum of the light emitted from the second light emitting surface along the first direction X ( Figure 4The wavelength corresponding to the peak of the curve indicated by W in ) is greater than the wavelength corresponding to the peak of the emission spectrum of at least one color of light emitted by the light-emitting device 2. For example, the light-emitting device 2 can emit blue light, green light, and red light. The wavelength corresponding to the peak of the transmission spectrum of the light emitted from the second light-emitting surface along the first direction X can be greater than the wavelength corresponding to the peak of the emission spectrum of blue light ( Figure 4 the curve shown by B in ); or, the wavelength corresponding to the peak of the transmission spectrum of the light emitted from the second light-emitting surface along the first direction X can be greater than the wavelength corresponding to the peak of the emission spectrum of green light ( Figure 4 the curve shown by G in ); or, the wavelength corresponding to the peak of the transmission spectrum of the light emitted from the second light-emitting surface along the first direction X can be greater than the wavelength corresponding to the peak of the emission spectrum of red light ( Figure 4 the curve shown by R in ). By setting it in this way, the brightness of the light emitted along the first direction X can be improved, and thus the brightness that the user views at a small viewing angle can be improved, and the display effect can be improved.

[0128] Moreover, after being adjusted by the light adjustment layer 12, the wavelength corresponding to the peak of the transmission spectrum of the light emitted from the light adjustment layer 12 decreases from the light emitted along the first direction X to the light emitted along the second direction Y, and thus it can be made that the wavelength corresponding to the peak of the transmission spectrum of the light emitted from the light adjustment layer 12 gradually approaches the wavelength corresponding to the peak of the emission spectrum of the light emitted by the light-emitting device 2.

[0129] Since the transmittance of the light adjustment layer 12 rises slowly in the initial stage, the reflectivity of the light adjustment layer 12 decreases slowly in this stage, so that the weakening rate of the light emission brightness can be slowed down, the brightness of the light emitted at a small angle can be improved, and thus the brightness that the user views at a small viewing angle can be improved, and the display effect can be improved.

[0130] As the light emission angle further increases, when the wavelength corresponding to the peak of the transmission spectrum of the light emitted from the light adjustment layer 12 is about to coincide with the wavelength corresponding to the peak of the emission spectrum of the light emitted by the light-emitting device 2, the transmittance of the light adjustment layer 12 will rise sharply, making the reflectivity of the light adjustment layer 12 decrease sharply in this stage. At this time, the light emission brightness will decrease sharply. Until the wavelength corresponding to the peak of the transmission spectrum of the light emitted from the light adjustment layer 12 coincides with the wavelength corresponding to the peak of the emission spectrum of the light emitted by the light-emitting device 2, the deterioration of the light emission brightness is the most serious, and the light emission brightness is the lowest at this time.

[0131] Since the reflectivity of the light adjustment layer 12 decreases sharply in this stage, when the light has a small emission angle, the wavelength corresponding to the peak of the transmission spectrum of the light emitted from the light adjustment layer 12 can coincide with the wavelength corresponding to the peak of the emission spectrum of the light emitted by the light-emitting device 2, and thus the lowest light emission brightness can be obtained at a small emission angle, and therefore the cut-off angle of the anti-peeping device 1 can be reduced, and a better anti-peeping effect can be achieved.

[0132] In some embodiments of the present disclosure, the light-emitting device 2 may include: a substrate 21, a buffer layer 22, a first electrode 23, a gate layer 24, source / drain electrodes 25, an interlayer dielectric layer 26, a third planarization layer 27, a pixel definition layer 28, a second electrode layer 29, and a fourth planarization layer 30. Among them, the first electrode 23 layer may be located on one side of the substrate 21, the buffer layer 22 may cover the first electrode 23 layer, the gate layer 24 may be located on the side of the buffer layer 22 away from the substrate 21, and the interlayer dielectric layer 26 may be located on the side of the gate layer 24 away from the substrate 21. The source / drain electrodes 25 may be disposed on one side of the interlayer dielectric layer 26 and electrically connected to the gate layer 24 through the interlayer dielectric layer 26. The third planarization layer 27 may cover the source / drain electrodes 25, and the pixel definition layer 28 and the second electrode layer 29 may be disposed on the third planarization layer 27. The second electrode layer 29 may be electrically connected to the source / drain electrodes 25. The fourth planarization layer 30 may cover the pixel definition layer 28 and the second electrode layer 29. The anti-peeking device 1 may be located on the side of the fourth planarization layer 30 away from the substrate 21.

[0133] Some embodiments of the present disclosure provide a method for manufacturing a display panel 3. The method for manufacturing the display panel 3 can be used to manufacture the above-mentioned display panel 3, such as Figures 1 to 4 and Figure 9 as shown, the method for manufacturing the display panel 3 may include:

[0134] Step S110, forming the light-emitting device 2.

[0135] Step S120, forming the anti-peeking device 1 on the light-emitting side of the light-emitting device 2 and making the anti-peeking film layer 11 closer to the light-emitting device 2 than the light adjustment layer 12.

[0136] It should be noted that since the structure and beneficial effects of the display panel 3 have been elaborated in detail in the previous topic of the present disclosure. Therefore, the structure and beneficial effects of the display panel 3 will not be repeated in this topic and can be referred to the above description, which is also within the protection scope of the present disclosure.

[0137] Some embodiments of the present disclosure provide a method for manufacturing a display panel 3. The display panel 3 manufactured by this method for manufacturing the display panel 3 can use the anti-peeking film layer 11 to reduce the emission angle of the emitted light, so that the light will not be emitted at a large angle, thereby achieving the anti-peeking effect of the display panel 3.

[0138] Moreover, the anti-peeking device 1 is provided with a light adjustment layer 12. The light adjustment layer 12 may have a second light incident surface and a second light exit surface. The light emitted from the first light exit surface may enter the light adjustment layer 12 through the second light incident surface to perform light adjustment within the light adjustment layer 12, so that the transmission spectrum of the light emitted from the second light exit surface along the first direction X (Figure 4 The wavelength corresponding to the peak of the curve indicated by W in ) is greater than the wavelength corresponding to the peak of the emission spectrum of at least one color of light emitted by the light-emitting device 2. For example, the light-emitting device 2 can emit blue light, green light, and red light. The wavelength corresponding to the peak of the transmission spectrum of the light emitted from the second light-emitting surface along the first direction X can be greater than the wavelength corresponding to the peak of the emission spectrum of blue light ( Figure 4 the curve shown by B in ); or, the wavelength corresponding to the peak of the transmission spectrum of the light emitted from the second light-emitting surface along the first direction X can be greater than the wavelength corresponding to the peak of the emission spectrum of green light ( Figure 4 the curve shown by G in ); or, the wavelength corresponding to the peak of the transmission spectrum of the light emitted from the second light-emitting surface along the first direction X can be greater than the wavelength corresponding to the peak of the emission spectrum of red light ( Figure 4 the curve shown by R in ). With such a setting, the brightness of the light emitted along the first direction X can be increased, and thus the brightness that the user views at a small viewing angle can be increased, improving the display effect.

[0139] Moreover, after being adjusted by the light adjustment layer 12, the wavelength corresponding to the peak of the transmission spectrum of the light emitted from the light adjustment layer 12 decreases from the light emitted along the first direction X to the light emitted along the second direction Y, and thus it can be made that the wavelength corresponding to the peak of the transmission spectrum of the light emitted from the light adjustment layer 12 gradually approaches the wavelength corresponding to the peak of the emission spectrum of the light emitted by the light-emitting device 2.

[0140] Since the transmittance of the light adjustment layer 12 rises slowly in the initial stage, the reflectivity of the light adjustment layer 12 decreases slowly at this stage, so that the weakening rate of the light emission brightness can be slowed down, the brightness of the light emitted at a small angle can be increased, and thus the brightness that the user views at a small viewing angle can be increased, improving the display effect.

[0141] As the light emission angle further increases, when the wavelength corresponding to the peak of the transmission spectrum of the light emitted from the light adjustment layer 12 is about to coincide with the wavelength corresponding to the peak of the emission spectrum of the light emitted by the light-emitting device 2, the transmittance of the light adjustment layer 12 will rise sharply, making the reflectivity of the light adjustment layer 12 decrease sharply at this stage. At this time, the light emission brightness will be weakened sharply. Until the wavelength corresponding to the peak of the transmission spectrum of the light emitted from the light adjustment layer 12 coincides with the wavelength corresponding to the peak of the emission spectrum of the light emitted by the light-emitting device 2, the deterioration of the light emission brightness is the most serious, and the light emission brightness is the lowest at this time.

[0142] Since the reflectivity of the light adjustment layer 12 drops sharply at this stage, when the light has a small exit angle, the wavelength corresponding to the peak value of the transmission spectrum of the light emitted from the light adjustment layer 12 can coincide with the wavelength corresponding to the peak value of the emission spectrum emitted by the light-emitting device 2. Furthermore, the lowest light-emitting brightness can be achieved at a small exit angle, and thus the cut-off angle of the anti-peeping device 1 can be reduced, thereby achieving a better anti-peeping effect.

[0143] In step S110, a first electrode 23 layer can be formed on one side of the substrate 21, a buffer layer 22 can be formed to cover the first electrode 23 layer, a gate layer 24 can be formed on the side of the buffer layer 22 away from the substrate 21, and an interlayer dielectric layer 26 can be formed on the side of the gate layer 24 away from the substrate 21. A source-drain electrode 25 can be formed on one side of the interlayer dielectric layer 26, and the source-drain electrode 25 can pass through the interlayer dielectric layer 26 and be electrically connected to the gate layer 24. A third planarization layer 27 can be formed to cover the source-drain electrode 25, and a pixel definition layer 28 and a second electrode layer 29 can be formed on the third planarization layer 27, and the second electrode layer 29 can be electrically connected to the source-drain electrode 25. A fourth planarization layer 30 can be formed to cover the pixel definition layer 28 and the second electrode layer 29.

[0144] In step S120, the anti-peeping device 1 can be formed on the side of the fourth planarization layer 30 away from the substrate 21. The formation method of the anti-peeping device 1 can refer to the above steps S10 and S20, and will not be elaborated in this embodiment.

[0145] Some embodiments of the present disclosure provide a display device, and the display device may include the display panel 3 described above.

[0146] It should be noted that since the structure and beneficial effects of the display panel 3 have been elaborated in detail in the previous topic of the present disclosure. Therefore, the structure and beneficial effects of the display panel 3 will not be elaborated in this topic, and reference can be made to the above description, which is also within the protection scope of the present disclosure.

[0147] Some embodiments of the present disclosure provide a display device, as Figures 1 to 4 shown, the display device includes a display panel 3 provided with an anti-peeping device 1, the anti-peeping device 1 is provided with a light adjustment layer 12, the light adjustment layer 12 can have a second light incident surface and a second light exit surface, and the light emitted from the first light exit surface can enter the light adjustment layer 12 from the second light incident surface to perform light adjustment within the light adjustment layer 12, so that the transmission spectrum of the light emitted from the second light exit surface along the first direction X ( Figure 4The wavelength corresponding to the peak of the curve indicated by W in ) is greater than the wavelength corresponding to the peak of the emission spectrum of at least one color of light emitted by the light-emitting device 2. For example, the light-emitting device 2 can emit blue light, green light, and red light. The wavelength corresponding to the peak of the transmission spectrum of the light emitted from the second light-emitting surface along the first direction X can be greater than the wavelength corresponding to the peak of the emission spectrum of blue light ( Figure 4 the curve indicated by B in ); or, the wavelength corresponding to the peak of the transmission spectrum of the light emitted from the second light-emitting surface along the first direction X can be greater than the wavelength corresponding to the peak of the emission spectrum of green light ( Figure 4 the curve indicated by G in ); or, the wavelength corresponding to the peak of the transmission spectrum of the light emitted from the second light-emitting surface along the first direction X can be greater than the wavelength corresponding to the peak of the emission spectrum of red light ( Figure 4 the curve indicated by R in ). By setting it like this, the brightness of the light emitted along the first direction X can be improved, and thus the brightness of the user's viewing at a small viewing angle can be improved, and the display effect can be improved.

[0148] Moreover, after being adjusted by the light adjustment layer 12, the wavelength corresponding to the peak of the transmission spectrum of the light emitted from the light adjustment layer 12 decreases from the light emitted along the first direction X to the light emitted along the second direction Y, and thus it can be made that the wavelength corresponding to the peak of the transmission spectrum of the light emitted from the light adjustment layer 12 will gradually approach the wavelength corresponding to the peak of the emission spectrum of the light emitted by the light-emitting device 2.

[0149] Since the transmittance of the light adjustment layer 12 rises slowly in the early stage, the reflectivity of the light adjustment layer 12 decreases slowly at this stage, so that the weakening rate of the light emission brightness can be slowed down, the brightness of the light emitted at a small angle can be improved, and thus the brightness of the user's viewing at a small viewing angle can be improved, and the display effect can be improved.

[0150] As the light emission angle further increases, when the wavelength corresponding to the peak of the transmission spectrum of the light emitted from the light adjustment layer 12 is about to coincide with the wavelength corresponding to the peak of the emission spectrum of the light emitted by the light-emitting device 2, the transmittance of the light adjustment layer 12 will rise sharply, making the reflectivity of the light adjustment layer 12 decrease sharply at this stage. At this time, the light emission brightness will be weakened sharply. Until the wavelength corresponding to the peak of the transmission spectrum of the light emitted from the light adjustment layer 12 coincides with the wavelength corresponding to the peak of the emission spectrum of the light emitted by the light-emitting device 2, the deterioration of the light emission brightness is the most serious, and the light emission brightness is the lowest at this time.

[0151] Since the reflectivity of the light adjustment layer 12 decreases sharply at this stage, when the light has a small emission angle, the wavelength corresponding to the peak of the transmission spectrum of the light emitted from the light adjustment layer 12 can coincide with the wavelength corresponding to the peak of the emission spectrum of the light emitted by the light-emitting device 2, and thus the lowest light emission brightness can be obtained at a small emission angle, and therefore the cut-off angle of the anti-peeping device 1 can be reduced, so as to achieve a better anti-peeping effect.

[0152] Other embodiments of the present disclosure will be readily apparent to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. The present disclosure is intended to cover any variations, uses, or adaptations of the present disclosure that follow the general principles of the present disclosure and include known common general knowledge or conventional technical means in the technical field not disclosed by the present disclosure. The specification and examples are only to be considered as exemplary, and the true scope and spirit of the present disclosure are pointed out by the appended claims.

Claims

1. A privacy protection device, characterized in that: include: An anti-peep film layer, having a first light incident surface and a first light emitting surface, wherein the anti-peep film layer can reduce an emission angle of light emitted from the first light emitting surface; a light adjustment layer, located on a side of the first light emitting surface away from the first light incident surface, the light adjustment layer having a second light incident surface and a second light emitting surface, the light emitted from the first light emitting surface enters the light adjustment layer from the second light incident surface; the wavelength corresponding to the transmission spectrum peak of the light emitted from the second light emitting surface along the first direction is greater than the wavelength corresponding to the emission spectrum peak of at least one color light emitted by the light emitting device, and the wavelength corresponding to the transmission spectrum peak of the light emitted from the second light emitting surface decreases from the light emitted along the first direction to the light emitted along the second direction; The first direction is perpendicular to the second light emitting surface, and the second direction is perpendicular to the first direction.

2. The anti-peeping device according to claim 1, characterized in that: The wavelength corresponding to the peak of the transmission spectrum of the light emitted from the second light emitting surface along the third direction is the same as the wavelength corresponding to the peak of the emission spectrum of at least one color of light emitted by the light emitting device; The third direction is located between the first direction and the second direction, and the third direction has a first angle with the first direction, and the first angle is 15° to 45°.

3. The anti-peeping device according to claim 1 or 2, characterized in that: The light emitting device can emit blue light, green light and red light; The wavelength corresponding to the transmission spectrum peak of the light emitted from the second light emitting surface along the first direction is between the wavelengths corresponding to the emission spectrum peaks of the any two colors of light; Alternatively, a wavelength corresponding to a peak value of a transmission spectrum of light emitted from the second light emitting surface along the first direction is greater than a wavelength corresponding to a peak value of a light emitting spectrum of the red light.

4. The anti-peeping device according to claim 3, characterized in that: The transmission spectrum of the light emitted from the second light emitting surface along the first direction has a first peak, a second peak and a third peak; Among them, the wavelength corresponding to the first peak is greater than the wavelength corresponding to the peak of the blue light emission spectrum; the wavelength corresponding to the second peak is greater than the wavelength corresponding to the peak of the green light emission spectrum; the wavelength corresponding to the third peak is greater than the wavelength corresponding to the peak of the red light emission spectrum.

5. The anti-peeping device according to any one of claims 1 or 2, characterized in that: The light adjustment layer is configured to reflect light having a first handedness and transmit light having a second handedness; The first rotation direction and the second rotation direction have opposite rotation directions.

6. The anti-peeping device according to claim 5, characterized in that: The light adjustment layer comprises: A liquid crystal structure, comprising multiple layers of liquid crystal stacked along the first direction, wherein the liquid crystal molecules in each layer of liquid crystal are arranged in the same direction, and the arrangement directions of the liquid crystal molecules in any two adjacent layers of liquid crystal have an angle, so that the liquid crystal structure is arranged in a spiral shape in the first direction; The rotation direction of the liquid crystal structure is the same as the rotation direction of the first rotation direction.

7. The anti-peeping device according to claim 6, characterized in that: The light adjustment layer is configured to change the wavelength corresponding to the transmission spectrum peak of the light emitted from the second light emitting surface along the first direction by adjusting the average refractive index and / or the pitch of the liquid crystal structure, so that the wavelength corresponding to the transmission spectrum peak of the light emitted from the second light emitting surface along the first direction is greater than the wavelength corresponding to the emission spectrum peak of at least one color light emitted by the light emitting device; The pitch of the liquid crystal structure is: the height corresponding to the rotation of the liquid crystal structure by 360° in the first direction.

8. The anti-peeping device according to claim 6, characterized in that: The light adjustment layer comprises: The three layers of the liquid crystal structure are stacked and arranged, and the three layers of the liquid crystal structure are respectively used to reflect red light with a first hand direction, green light with a first hand direction, and blue light with a first hand direction.

9. The anti-peeping device according to claim 6, characterized in that: The light adjustment layer comprises: The two layers of the stacked liquid crystal structure are used to reflect any two of red light with a first hand-direction, green light with a first hand-direction, and blue light with a first hand-direction, and the colors of the light reflected by each layer of the liquid crystal structure are different.

10. The anti-peeping device according to claim 9, characterized in that: The two layers of the liquid crystal structure are used to reflect green light with a first hand-direction and blue light with a first hand-direction respectively.

11. The anti-peeping device according to claim 5, characterized in that: The anti-peep film layer comprises: The blocking layer includes a planarization layer and a plurality of blocking blocks spaced apart along the second direction, wherein the planarization layer covers the blocking blocks.

12. The anti-peeping device according to claim 11, characterized in that: The anti-peep film layer also includes: A first direction-adjusting layer is arranged between the blocking layer and the light-adjusting layer, and the first direction-adjusting layer includes: a first filling layer and a plurality of reflection blocks arranged at intervals along the second direction, the first filling layer covers the reflection blocks, and the refractive index of the reflection blocks is smaller than the refractive index of the first filling layer, so that light can be totally reflected on the surface of the reflection blocks.

13. The anti-peeping device according to claim 11, characterized in that: The anti-peep film layer also includes: A second direction-adjusting layer is arranged between the blocking layer and the light-adjusting layer, and the second direction-adjusting layer includes: a second filling layer and a plurality of light-focusing structures arranged at intervals along the second direction, the second filling layer covers the light-focusing structure, and the refractive index of the light-focusing structure is greater than the refractive index of the second filling layer, so as to utilize the light-focusing structure to converge light.

14. A display panel, characterized in that: include: Light emitting device; The anti-peeping device is arranged on one side of the light-emitting device, and the anti-peeping device is the anti-peeping device according to any one of claims 1 to 13, and the anti-peeping film layer is close to the light-emitting device relative to the light regulating layer.

15. A display device, characterized in that: The display device comprises the display panel according to claim 14.

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