Display panel and display device

Abstract

This application discloses a display panel and a display device. The display panel also includes a base substrate, a pixel definition layer, display sub-pixels, anti-peeping sub-pixels, an encapsulation layer, and a light-shielding layer. The encapsulation layer includes an organic encapsulation layer and a first inorganic encapsulation layer, the first inorganic encapsulation layer being disposed on a side of the organic encapsulation layer away from the base substrate. In the region where the anti-peeping sub-pixels are located, a refractive surface is disposed on a side of the organic encapsulation layer closer to the first inorganic encapsulation layer. The refractive surface is configured to refract a portion of light emitted from the anti-peeping sub-pixels toward the light-shielding layer and then emit it out through the opening. By providing the refractive surface, this application improves the utilization rate of the anti-peeping light, thereby enhancing the anti-peeping effect of the display panel.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to a display panel and a display device. Background Art

[0002] At present, OLED organic light-emitting display technology is gradually maturing, and as a self-luminous display technology, it is being used in more and more products. As people in modern society pay more attention to their own privacy, the anti-peeping function of the display panel has also become a necessary function of the product. Therefore, OLED anti-peeping technology has also been a hot topic of discussion recently.

[0003] One anti-peeping technology involves adding anti-peeping pixels. These pixels can be placed between two adjacent display sub-pixels. The anti-peeping light emitted by these pixels interferes with the display at wide viewing angles, thus achieving an anti-peeping effect. However, the current utilization rate of the anti-peeping light is low, resulting in poor anti-peeping effects. Summary of the Invention

[0004] The purpose of the present application is to provide a display panel and a display device, which improve the utilization rate of anti-peeping light at side viewing angles by setting a refractive surface, thereby improving the anti-peeping effect of the display panel.

[0005] The present application discloses a display panel, which includes an opening area and a non-opening area, and further includes a base substrate, a pixel definition layer, a display sub-pixel, an anti-peeping sub-pixel, an encapsulation layer and a light-shielding layer; the pixel definition layer is arranged on the base substrate and is located in the non-opening area; the display sub-pixel is arranged in the opening area, and two adjacent display sub-pixels are separated by the pixel definition layer; the anti-peeping sub-pixel is arranged in the non-opening area, and at least one anti-peeping sub-pixel is arranged in a pixel, and the anti-peeping sub-pixel and the display sub-pixel are separated by the pixel definition layer; the encapsulation layer is arranged on the pixel definition layer, The display sub-pixel and the anti-peeping sub-pixel are used to seal the display sub-pixel and the anti-peeping sub-pixel; and the light-shielding layer is arranged on the anti-peeping sub-pixel, used to block the outgoing light of the light-shielding layer perpendicular to the base substrate; wherein, the encapsulation layer includes an organic encapsulation layer and a first inorganic encapsulation layer, and the first inorganic encapsulation layer is arranged on the side of the organic encapsulation layer away from the base substrate; in the area where the anti-peeping sub-pixel is located, a refractive surface is provided on the side of the organic encapsulation layer close to the first inorganic encapsulation layer, and the refractive surface is used to refract part of the light emitted from the anti-peeping sub-pixel to the light-shielding layer and then emit it from the opening area.

[0006] Optionally, an angle between the refractive surface and an outgoing light ray of the anti-peeping sub-pixel perpendicular to the base substrate is within a first angle range, and the first angle range is greater than 0 degrees and less than 90 degrees.

[0007] Optionally, in the area where the anti-peep sub-pixel is located, the refractive index of the first inorganic encapsulation layer is greater than the refractive index of the organic encapsulation layer; wherein the refractive index of the first inorganic encapsulation layer is between 1.7 and 1.9, and the refractive index of the organic encapsulation layer is between 1.4 and 1.5.

[0008] Optionally, a groove is provided in the organic encapsulation layer at a position corresponding to the opening area, the width of the groove is greater than the width of the opening area, and on the orthographic projection of the base substrate, the groove partially overlaps with the light-shielding layer; the side wall of the groove is inclined toward the direction of the anti-peep sub-pixel, and the side wall is the refractive surface.

[0009] Optionally, the refractive surface is a curved surface; and the normal directions at different positions of the refractive surface are different.

[0010] Optionally, in the area where the anti-peep sub-pixel is located, a protrusion is provided on the organic encapsulation layer, and a side of the protrusion close to the first inorganic encapsulation layer is a curved surface serving as a refractive surface.

[0011] Optionally, the encapsulation layer further includes a first organic refractive layer, which is disposed between the organic encapsulation layer and the first inorganic encapsulation layer, and has a refractive index higher than that of the organic encapsulation layer.

[0012] Optionally, a side of the first organic refractive layer close to the first inorganic encapsulation layer is a plane; and a film interface of the first organic refractive layer close to the anti-peep sub-pixel has a shape consistent with that of the refractive surface.

[0013] Optionally, in the area where the anti-peeping sub-pixels are located, the thickness of the light shielding layer gradually decreases from the middle area toward the surrounding areas.

[0014] The present application discloses a display device, comprising a driving circuit and the above-mentioned display panel, wherein the driving circuit is used to drive the display panel to display.

[0015] The present application sets a refractive surface in the anti-peeping sub-pixel area. When the anti-peeping light of the anti-peeping sub-pixel is emitted, the refractive effect of the refractive surface allows as much anti-peeping light as possible to be emitted from the opening area. That is, the outgoing light of the anti-peeping sub-pixel perpendicular to the substrate is refracted to be emitted from the opening area, forming an anti-peeping effect, thereby improving the light utilization rate of the anti-peeping sub-pixel. Moreover, the present application improves the film interface between the first inorganic encapsulation layer and the organic encapsulation layer in the encapsulation layer without adding additional structures, so that the film interface between the first inorganic encapsulation layer and the organic encapsulation layer forms a refractive surface, which can refract part of the light emitted by the anti-peeping sub-pixel to the light-shielding layer and emit it from the opening area, thereby improving the brightness and anti-peeping effect of the anti-peeping sub-pixel under the anti-peeping viewing angle, and reducing the improvement cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The included drawings are used to provide a further understanding of the embodiments of the present application, which constitute a part of the specification, are used to illustrate the implementation methods of the present application, and together with the text description, explain the principles of the present application. Obviously, the drawings described below are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without inventive work. In the drawings:

[0017] Figure 1 is a schematic top view of a display panel according to the first embodiment of the present application;

[0018] Figure 2 is a schematic cross-sectional view of a display panel according to a first embodiment of the present application;

[0019] Figure 3 Schematic diagram of the luminous intensity of the anti-peeping sub-pixel without a refractive surface and the display sub-pixel at different angles in the present application;

[0020] Figure 4 is a schematic diagram of the luminous intensity of the anti-peeping sub-pixel and the display sub-pixel at different angles according to the first embodiment of the present application;

[0021] Figure 5 is a schematic diagram of another display panel according to the first embodiment of the present application;

[0022] Figure 6 is a schematic diagram of another display panel according to the first embodiment of the present application;

[0023] Figure 7 is a schematic diagram of a display panel according to a second embodiment of the present application;

[0024] Figure 8 is a schematic diagram of another display panel according to the second embodiment of the present application;

[0025] Figure 9 is a schematic diagram of a display panel according to a third embodiment of the present application;

[0026] Figure 10 is a schematic diagram of a display device of the present application.

[0027] Among them, 100, display panel; 101, opening area; 102, non-opening area; 111, base substrate; 112, pixel definition layer; 120, display sub-pixel; 130, anti-peep sub-pixel; 140, encapsulation layer; 141, first inorganic encapsulation layer; 142, organic encapsulation layer; 1421, refractive surface; 1422, protrusion; 1423, groove; 143, second inorganic encapsulation layer; 144, first organic refractive layer; 150, light-shielding layer; 200, display device; 210, driving circuit. DETAILED DESCRIPTION

[0028] It should be understood that the terms used herein, the specific structures and functional details disclosed are only for describing specific embodiments and are representative. However, the present application can be implemented in many alternative forms and should not be construed as being limited to the embodiments described herein.

[0029] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as indicating relative importance or implicitly indicating the number of technical features indicated. Therefore, unless otherwise specified, features defined as "first" and "second" may explicitly or implicitly include one or more of such features; "multiple" means two or more. In addition, terms indicating orientation or positional relationships such as "upper", "lower", "left", "right", "vertical", and "horizontal" are based on the orientation or relative positional relationships shown in the accompanying drawings and are only for the convenience of describing a simplified description of this application, rather than indicating that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0030] The present application is described in detail below with reference to the accompanying drawings and optional embodiments.

[0031] Figure 1 is a schematic top view of a display panel according to the first embodiment of the present application, Figure 2 is a schematic cross-sectional view of a display panel according to the first embodiment of the present application, see Figures 1 to 2As shown, the present application discloses a display panel 100, which includes an opening area 101 and a non-opening area 102. The display panel 100 also includes a base substrate 111, a pixel definition layer 112, a display sub-pixel 120, an anti-peeping sub-pixel 130, an encapsulation layer 140 and a light shielding layer 150; the pixel definition layer 112 is arranged on the base substrate 111 and is located in the non-opening area 102; the display sub-pixel 120 is arranged in the opening area 101, and two adjacent display sub-pixels are separated by the pixel definition layer 112; the anti-peeping sub-pixel 130 is arranged in the non-opening area 102, and at least one anti-peeping sub-pixel 130 is arranged in one pixel, and the anti-peeping sub-pixel 130 is separated from the display sub-pixel 120 by the pixel definition layer 112; the encapsulation layer 140 is arranged in the pixel definition layer 112. The layer 112, the display sub-pixel 120, and the anti-peeping sub-pixel 130 are used to seal the display sub-pixel 120 and the anti-peeping sub-pixel 130; and the light-shielding layer 150 is arranged on the anti-peeping sub-pixel 130, for blocking the outgoing light of the light-shielding layer 150 perpendicular to the base substrate 111; wherein the encapsulation layer 140 includes an organic encapsulation layer 142 and a first inorganic encapsulation layer 141, and the first inorganic encapsulation layer 141 is arranged on the side of the organic encapsulation layer 142 away from the base substrate 111; in the area where the anti-peeping sub-pixel 130 is located, a refractive surface 1421 is provided on the side of the organic encapsulation layer 142 close to the first inorganic encapsulation layer 141, and the refractive surface 1421 is used to refract part of the light emitted from the anti-peeping sub-pixel 130 to the light-shielding layer 150 and then emit it from the opening area 101.

[0032] The present application provides a refractive surface 1421 in the area of the anti-peeping sub-pixel 130. When the anti-peeping light from the anti-peeping sub-pixel 130 is emitted, the refractive effect of the refractive surface 1421 allows as much of the anti-peeping light as possible to be emitted from the opening area 101. That is, the light emitted from the anti-peeping sub-pixel 130 perpendicular to the base substrate 111 is refracted and thus emitted from the opening area 101, thereby achieving an anti-peeping effect and improving the light utilization rate of the anti-peeping sub-pixel 130. Moreover, the present application improves the film interface between the first inorganic encapsulation layer 141 and the organic encapsulation layer 142 in the encapsulation layer 140 without adding additional structures, so that the film interface between the first inorganic encapsulation layer 141 and the organic encapsulation layer 142 forms a refractive surface 1421, which can refract some of the light emitted from the anti-peeping sub-pixel 130 toward the light-shielding layer 150 and emit it from the area not blocked by the light-shielding layer 150 in the opening area 101 or the non-opening area 102, thereby improving the brightness and anti-peeping effect of the anti-peeping sub-pixel 130 at the anti-peeping viewing angle and reducing the improvement cost.

[0033] Generally speaking, with the direction perpendicular to the base substrate 111 as the normal direction of the display panel 100, the display angle of the wide-angle display panel 100 is about 160 degrees, that is, the angle between the outgoing light and the normal direction of the display panel 100 can be up to 80 degrees. The display viewing angle of the general display panel 100 is also about 120, that is, the angle between the outgoing light and the normal direction of the display panel 100 can be up to 60 degrees. For privacy protection, interference needs to be performed when the angle between the outgoing light and the normal direction of the display panel 100 exceeds 25 degrees. Even if the angle between the outgoing light and the normal direction of the display panel 100 is in the range of 0 to 25 degrees, it is a normal viewing angle, and the angle exceeding 25 degrees is an anti-peeping viewing angle. The light emitted from the anti-peeping sub-pixel 130 in the range exceeding 25 degrees causes the display sub-pixels under the anti-peeping viewing angle to have different grayscales and mixed colors, making it impossible to see the displayed content under the anti-peeping viewing angle, thus achieving privacy protection. However, since most of the vertically emitted light from the anti-peeping sub-pixel 130 is blocked by the light-shielding layer 150, the light utilization efficiency under the anti-peeping viewing angle is low. It is worth mentioning that the light-shielding layer 150 needs to completely block the vertically emitted light from the anti-peeping sub-pixel 130. Therefore, the area of the light-shielding layer 150 is larger than the light-emitting area of the anti-peeping sub-pixel 130. However, the area of the light-shielding layer 150 can be reduced to be smaller than the area of the non-opening area 102. That is, on the orthographic projection of the base substrate 111, the projection of the light-shielding layer 150 is within the projection range of the pixel definition layer 112. Therefore, after refraction, the anti-peeping light can be emitted from the opening area 101 or the area within the non-opening area 102 that is not blocked by the light-shielding layer 150.

[0034] Figure 3 This is a schematic diagram of the luminous intensity of the anti-peep sub-pixel without a refractive surface and the display sub-pixel at different angles of the present application, see Figure 3 As shown, the horizontal axis represents the angle between the outgoing light of the anti-peeping sub-pixel 130 and the display sub-pixel 120 and the normal of the display panel 100, and the vertical axis represents the intensity of the outgoing light of the anti-peeping sub-pixel 130 and the display sub-pixel 120 at this angle. Currently, when the anti-peeping sub-pixel 130 and the display sub-pixel 120 both adopt the structure of a light-emitting unit and are respectively formed at the opening position of the pixel definition layer 112, that is, when the light-emitting film layer of the anti-peeping sub-pixel 130 and the light-emitting film layer of the display sub-pixel 120 are simultaneously evaporated, the luminous efficiency of the two is similar. When the above-mentioned angle gradually increases, the luminous intensity of the anti-peeping sub-pixel 130 also gradually decreases. However, since the present application utilizes the outgoing light of the anti-peeping sub-pixel 130 at the anti-peeping angle, especially the anti-peeping light between 25 degrees and 45 degrees is seriously insufficient, resulting in a poor anti-peeping effect.

[0035] Continue to see Figure 2As shown, the present application improves the film refractive index and film interface within the encapsulation layer 140, such that, for example, a refractive surface 1421 is formed at the film interface between the first inorganic encapsulation layer 141 and the organic encapsulation layer 142, thereby enhancing the privacy protection of the anti-peeping sub-pixel 130 at angles between 25 and 45 degrees. Generally, the organic encapsulation layer 142 in the encapsulation layer 140 is formed of an organic insulating material and is relatively thick. The film interface near the first inorganic encapsulation layer 141 is relatively flat, and this film interface is substantially parallel to the base substrate 111. In this embodiment, the refractive surface 1421 is not parallel to the base substrate 111 and forms an angle with the outgoing light of the anti-peeping sub-pixel 130 perpendicular to the base substrate (hereinafter referred to as the perpendicular outgoing light). This refraction can then refract this perpendicular outgoing light toward the opening area 101, thereby enhancing the brightness of the anti-peeping sub-pixel 130 at angles between 25 and 45 degrees, thereby improving privacy protection.

[0036] Specifically, the angle between the refractive surface 1421 and the light emitted from the anti-peeping sub-pixel 130 perpendicular to the base substrate 111 is within a first angle range, which is greater than 0 degrees and less than 90 degrees. When the vertically emitted light from the anti-peeping sub-pixel 130 is incident at an angle with the refractive surface 1421, due to the different refractive indices of the organic encapsulation layer 142 and the first inorganic encapsulation layer 141, the vertically emitted light from the anti-peeping sub-pixel 130 will be refracted by the refractive surface 1421, thereby changing the emission angle so that it can be emitted from the opening area 101 where the adjacent display sub-pixel 120 is located, thereby achieving privacy protection.

[0037] In one embodiment, in the area where the anti-peeping sub-pixel 130 is located, the refractive index of the first inorganic encapsulation layer 141 is greater than the refractive index of the organic encapsulation layer 142. When the refractive index of the first inorganic encapsulation layer 141 is larger, when light enters the first inorganic encapsulation layer 141 from the organic encapsulation layer 142, the light will be offset in the direction close to the normal of the refractive surface 1421. If it is necessary to make this part of the light exit from the opening area 101, the angle of the refractive surface 1421 can be adjusted. For example, the refractive surface 1421 is tilted toward the direction of the anti-peeping sub-pixel 130, so that the angle between the normal of the refractive surface 1421 and the base substrate 111 is within the range of 30 degrees to 60 degrees, so that part of the vertically emitted light of the anti-peeping sub-pixel 130 can exit from the opening area 101, thereby increasing the light intensity at an anti-peeping viewing angle between 25 degrees and 45 degrees.

[0038] Specifically, in thin film encapsulation technology, the encapsulation layer 140 is generally formed by stacking inorganic insulating materials and organic insulating materials. The encapsulation layer 140 generally includes a first inorganic encapsulation layer 141, an organic encapsulation layer 142, and a second inorganic encapsulation layer 143. The second inorganic encapsulation layer 143 is arranged on the anti-peeping sub-pixel 130 and the display sub-pixel 120, and the organic encapsulation layer 142 is arranged on the second inorganic encapsulation layer 143. The first inorganic encapsulation layer 141 and the second inorganic encapsulation layer 143 are respectively formed of inorganic insulating materials, and the organic encapsulation layer 142 is formed of organic insulating materials. In this embodiment, the refractive index between the organic encapsulation layer 142 and the first inorganic encapsulation layer 141 is different, and the thickness of the organic encapsulation layer 142 is relatively thick, which makes it easy to form a refractive surface 1421 on the organic encapsulation layer 142, thereby enhancing the wide-angle anti-peeping light of the anti-peeping sub-pixel 130.

[0039] Specifically, the refractive index of the first inorganic encapsulation layer 141 is between 1.7 and 1.9, and the refractive index of the organic encapsulation layer 142 is between 1.4 and 1.5.

[0040] In another embodiment, when the material used makes the refractive index of the organic encapsulation layer 142 higher than that of the first inorganic encapsulation layer 141, the inclination angle of the refractive surface 1421 can be changed so that the inclination angle of the refractive surface 1421 deviates from the direction of the anti-peeping sub-pixel 130, so that the refractive surface 1421 under this refractive index can also refract the vertically emitted light of the anti-peeping sub-pixel 130 to the opening area 101.

[0041] Specifically, the refractive surface 1421 in this embodiment can be a plane with a single slope or a curved surface with a variable slope, etc., so as to achieve fixed angle or variable angle anti-peeping light enhancement.

[0042] Continue to see Figure 2 As shown, in this embodiment, the refractive surface 1421 is a plane, and the normal direction at each position of the refractive surface 1421 is the same.

[0043] In this embodiment, a groove 1423 is provided at a position of the organic encapsulation layer 142 corresponding to the opening area 101. The width of the groove 1423 is greater than the width of the opening area 101. On the orthographic projection of the base substrate 111, the groove 1423 partially overlaps with the light shielding layer 150. The sidewall of the groove 1423 is inclined toward the direction of the anti-peep sub-pixel 130, and the sidewall is the refractive surface 1421.

[0044] In this solution, a groove 1423 can be provided in the organic encapsulation layer 142 at the position of the opening area 101 so that the sidewall of the groove 1423 has a certain tilt angle to act as a refractive surface 1421, thereby refracting the vertically emitted light of the anti-peeping sub-pixel 130. It is understandable that the anti-peeping light emitted by the anti-peeping sub-pixel 130 after being refracted by the refractive surface 1421 needs to pass through the flat layer to enter the air. Since this part of the anti-peeping light is not vertically incident on the flat layer, this part of the anti-peeping light will also pass through the flat layer at a certain angle, especially when the flat layer enters the air, it will be refracted again, thereby improving the anti-peeping capability at an anti-peeping viewing angle between 25 degrees and 45 degrees.

[0045] Figure 4 This is a schematic diagram of the luminous intensity of the anti-peeping sub-pixel and the display sub-pixel at different angles in the first embodiment of the present application. Figure 4 As shown, by providing a groove 1423 in the organic encapsulation layer 142 to form a refractive surface 1421, and making the angle between the refractive surface 1421 and the base substrate 111 range from 30 degrees to 60 degrees, the refractive index of the first inorganic encapsulation layer 141 is set between 1.7 and 1.9, and the refractive index of the organic encapsulation layer 142 is set between 1.4 and 1.5. It can be seen that when the anti-peeping viewing angle ranges from 30 degrees to 45 degrees, the light output brightness of the anti-peeping sub-pixel 130 is greatly enhanced, significantly improving the anti-peeping capability at this anti-peeping viewing angle.

[0046] It is worth mentioning that in actual design, the thickness of the organic encapsulation layer 142, the depth of the groove 1423, the inclination of the side wall of the groove 1423, and the refractive index, etc. can be comprehensively considered. By adjusting the above parameters, the intensity of the anti-peeping light in the anti-peeping viewing angle range of 25 degrees to 60 degrees can be greatly improved.

[0047] Figure 5 is a schematic diagram of another display panel of the first embodiment of the present application, see Figure 5 As shown, in another design, the sidewalls of the grooves 1423 can be improved so that the sidewalls of two adjacent grooves 1423 in the area where the anti-peep sub-pixel 130 is located can be connected, so that more vertically emitted light can be emitted from the opening area 101 through refraction.

[0048] In this embodiment, the organic encapsulation layer 142 in the area where the privacy protection sub-pixel 130 is located is formed into refractive surfaces 1421 that are tilted toward the privacy protection sub-pixel 130. While the tilt directions of two adjacent refractive surfaces 1421 are different, the normals of both refractive surfaces extend through the privacy protection sub-pixel 130. As the angle between the refractive surface 1421 and the base substrate 111 increases, the required thickness of the organic encapsulation layer 142 increases, which of course is also related to the area of the privacy protection sub-pixel 130.

[0049] Figure 6 This is a schematic diagram of another display panel of the first embodiment of the present application, see Figure 6 As shown, in the anti-peep sub-pixel 130 area, the film layer of the organic encapsulation layer 142 close to the first inorganic encapsulation layer 141 can be arranged in a triangle, that is, a triangular convex surface is arranged on the organic encapsulation layer 142 to form multiple refractive surfaces 1421.

[0050] Compared to the above embodiment, when the sidewall of the groove 1423 is formed as a refractive surface 1421, the utilization rate of the vertically emitted light of the anti-peeping sub-pixel 130 is also low. Only the vertically emitted light of the outer circle of the anti-peeping sub-pixel 130 can be refracted, while the vertically emitted light of the middle area of the anti-peeping sub-pixel 130 will still be emitted onto the light shielding layer 150. By setting all the film layer interfaces of the organic encapsulation layer 142 in the area where the anti-peeping sub-pixel 130 is located to inclined planes, the emitted light of the anti-peeping sub-pixel 130 is diverged. Generally speaking, under the orthographic projection of the base substrate 111, the projection range of the refractive surface 1421 should be within the projection range of the light shielding layer 150, thereby avoiding the problem of light leakage. In this embodiment, it can be formed by a template method, that is, after pre-curing the organic encapsulation layer 142, a triangular film layer is formed by transfer.

[0051] Figure 7 is a schematic diagram of a display panel according to the second embodiment of the present application, see Figure 7 As shown, in this embodiment, the refractive surface 1421 can be set as a curved or arcuate surface so that the normal direction of each position thereof gradually changes, thereby achieving more uniform light emission. The normal directions at different positions of the refractive surface 1421 are different, so that the vertical outgoing light of the anti-peeping sub-pixel 130 has different offsets at different positions. This makes the light of the anti-peeping sub-pixel 130 more divergent after passing through it, and the light at all angles of the anti-peeping is more uniform, achieving a better anti-peeping effect.

[0052] Specifically, in the area where the privacy-preventing sub-pixel 130 is located, a protrusion 1422 is provided on the organic encapsulation layer 142. The side of the protrusion 1422 closest to the first inorganic encapsulation layer 141 is a curved surface, serving as a refractive surface 1421. Because the normal direction of each curved surface is different and gradually changes, when vertically emitted light strikes the refractive surface 1421 at different positions, although the refractive index ratio between the organic encapsulation layer 142 and the first inorganic encapsulation layer 141 remains unchanged, meaning that the offset of the vertical emission direction from the normal remains unchanged, the gradual change in the normal direction causes the final emission direction of the vertically emitted light to also gradually change, making the privacy-preventing light more uniform. Furthermore, by setting the curvature of the protrusion 1422, it is possible to achieve an enhanced privacy-preventing light with an adjusted angle. The protrusion 1422 can be provided in one or more positions. In this embodiment, two protrusions 1422 are provided as an example, and the refractive surface 1421 of the protrusion 1422 is a curved surface. The curvature can be designed according to actual conditions.

[0053] The arc surface of the protrusion 1422 can be realized by half-mask photolithography technology, so that the upper surface of the protrusion 1422 is an arc surface or a curved surface, thereby realizing the refraction effect of the anti-peek light.

[0054] For the light shielding layer 150 in this embodiment, in the area where the anti-peeping sub-pixels 130 are located, the thickness of the light shielding layer 150 gradually decreases from the middle area toward the surrounding areas.

[0055] Considering that the anti-peeping light is emitted at a certain angle, in practice, the bottom of the light-shielding layer 150 can be designed with an inclination angle according to the angle of the outgoing light, so that the cross-section of the light-shielding layer 150 is an inverted triangle. Of course, the edge position of the light-shielding layer 150 also has a certain thickness, which is sufficient to achieve the light-shielding effect. For the solution with a thinner light-shielding layer 150, the thickness of the light-shielding layer 150 can be appropriately increased so that the thickness of the light-shielding layer 150 gradually decreases from the middle area to the surrounding area in the area where the anti-peeping sub-pixel 130 is located. It is also possible to provide a reflective layer on the side of the light-shielding layer 150 close to the anti-peeping sub-pixel 130 so that the part of the vertically emitted light that cannot be refracted by the refractive surface 1421 can be reflected to the opening area 101, thereby enhancing the brightness of the anti-peeping light. However, an additional reflective layer is required, which is difficult to implement and makes the film layer more complex. Of course, this solution can be applied to the display panel 100 of any of the above embodiments. When the display panel 100 is an OLED (Organic Light-Emitting Diode) display panel 100 using the COE (Color Filter on Encapsulation) technology, the light shielding layer 150 of this embodiment is shared with the black matrix.

[0056] Figure 8is a schematic diagram of another display panel according to the second embodiment of the present application, see Figure 8 As shown, in this embodiment, the organic encapsulation layer 142 is provided with a groove 1423 at a position corresponding to the opening area 101. The width of the groove 1423 is greater than the width of the opening area 101. On the orthographic projection of the base substrate 111, the groove 1423 partially overlaps with the light shielding layer 150. The sidewall of the groove 1423 is provided on a concave arc surface, which is a refractive surface 1421.

[0057] Different from the previous embodiment, the present embodiment does not provide a protrusion 1422. Instead, a groove 1423 is provided on the organic encapsulation layer 142 of the opening area 101. The sidewall of the groove 1423 is etched to have an arc surface with a certain curvature, thereby forming a refractive surface 1421 of the arc surface, thereby refraction of the vertically emitted light, so that this part of the light is emitted from the opening area 101 at an angle.

[0058] Figure 9 is a schematic diagram of a display panel according to the third embodiment of the present application, see Figure 9 As shown, considering that after the refractive surface 1421 is formed on the organic encapsulation layer 142, the film interface of the organic encapsulation layer 142 close to the first inorganic encapsulation layer 141 will inevitably no longer be smooth, a thicker first inorganic encapsulation layer 141 needs to be selected to flatten this part of the film layer. However, when the film thickness of the first inorganic encapsulation layer 141 is thicker, cracks are prone to occur, which leads to water and oxygen invading the encapsulation layer 140, and there is a risk of poor encapsulation.

[0059] In this regard, in this embodiment, the encapsulation layer 140 further includes a first organic refractive layer 144 . The first organic refractive layer 144 is disposed between the organic encapsulation layer 142 and the first inorganic encapsulation layer. The refractive index of the first organic refractive layer 144 is higher than that of the organic encapsulation layer 142 .

[0060] In this embodiment, the first organic refractive layer 144 can be made of an organic insulating material, but its refractive index must be higher than that of the organic encapsulation layer 142. This allows the light to deviate from the normal direction when emitted, thereby allowing the light to be emitted from the opening area 101. The first organic refractive layer 144 has a certain degree of buffering capacity and can cover the uneven refractive surface 1421 formed by the organic encapsulation layer 142. This can improve cracks between the refractive surface 1421 and the first inorganic encapsulation layer 141, thereby improving the quality of the first inorganic encapsulation layer 141.

[0061] In a specific embodiment, the refractive index of the first organic refractive layer 144 is between the refractive indices of the organic encapsulation layer 142 and the first inorganic encapsulation layer 141, so that a refractive effect is generated again between the first organic refractive layer 144 and the first inorganic encapsulation layer 141, thereby increasing the brightness of the anti-peeping light at the anti-peeping viewing angle.

[0062] Figure 10 is a schematic diagram of the display device of this application, see Figure 10 As shown, the present application further discloses a display device, wherein the display device 200 includes a driving circuit 210 and the display panel 100 in any of the above embodiments. The driving circuit 210 is used to drive the display panel 100 to display.

[0063] It should be noted that the inventive concept of this application can form a large number of embodiments, but the length of the application document is limited and it is impossible to list them one by one. Therefore, under the premise of no conflict, the various embodiments or technical features described above can be arbitrarily combined to form new embodiments. After the various embodiments or technical features are combined, the original technical effects will be enhanced.

[0064] The above content is a further detailed description of the present application in conjunction with specific optional implementation methods, and the specific implementation of the present application cannot be considered to be limited to these descriptions. For ordinary technicians in the technical field to which the present application belongs, they can make several simple deductions or substitutions without departing from the concept of the present application, which should be considered to fall within the scope of protection of the present application.

Claims

1. A display panel, characterized in that: The display panel includes an opening area and a non-opening area, and further includes: substrate; A pixel definition layer is provided on the base substrate and is located in the non-opening area; Display sub-pixels are arranged in the opening area, and two adjacent display sub-pixels are separated by the pixel definition layer; An anti-peeping sub-pixel is arranged in the non-opening area, at least one anti-peeping sub-pixel is arranged in one pixel, and the anti-peeping sub-pixel is separated from the display sub-pixel by a pixel definition layer; an encapsulation layer, disposed on the pixel definition layer, the display sub-pixel, and the anti-peeping sub-pixel, and used for sealing the display sub-pixel and the anti-peeping sub-pixel; and a light shielding layer, disposed on the anti-peeping sub-pixel, for shielding the light emitted from the light shielding layer perpendicular to the base substrate; Wherein, the encapsulation layer includes an organic encapsulation layer and a first inorganic encapsulation layer, and the first inorganic encapsulation layer is arranged on a side of the organic encapsulation layer away from the base substrate; In the area where the anti-peeping sub-pixel is located, a refractive surface is provided on a side of the organic encapsulation layer close to the first inorganic encapsulation layer, and the refractive surface is used to refract part of the light emitted from the anti-peeping sub-pixel to the light shielding layer and then emit it from the opening area; The organic encapsulation layer is provided with a groove at a position corresponding to the opening area, wherein the width of the groove is greater than the width of the opening area, and in an orthographic projection of the base substrate, the groove partially overlaps with the light shielding layer; a sidewall of the groove is inclined toward the direction of the anti-peep sub-pixel, and the sidewall is the refractive surface; The angle between the refractive surface and the outgoing light of the anti-peeping sub-pixel perpendicular to the base substrate is within a first angle range, and the first angle range is greater than or equal to 30 degrees and less than or equal to 60 degrees; In the area where the anti-peeping sub-pixel is located, the refractive index of the first inorganic encapsulation layer is greater than the refractive index of the organic encapsulation layer; wherein the refractive index of the first inorganic encapsulation layer is between 1.7 and 1.9, and the refractive index of the organic encapsulation layer is between 1.4 and 1.5, and the refractive surface is used to enhance the output brightness of the anti-peeping sub-pixel at an angle of 25 degrees to 45 degrees; The light-emitting film layer of the anti-peeping sub-pixel and the light-emitting film layer of the display sub-pixel are formed in the same process, and as the angle formed by the outgoing light of the anti-peeping sub-pixel and the normal of the display panel gradually increases, the light-emitting intensity of the anti-peeping sub-pixel gradually decreases; In the area where the anti-peeping sub-pixels are located, the thickness of the light shielding layer gradually decreases from the middle area toward the surrounding areas.

2. The display panel according to claim 1, wherein: The refractive surface is a curved surface; and the normal directions at different positions of the refractive surface are different.

3. The display panel according to claim 2, wherein: In the area where the anti-peep sub-pixel is located, a protrusion is provided on the organic encapsulation layer, and a side of the protrusion close to the first inorganic encapsulation layer is a curved surface serving as a refractive surface.

4. The display panel according to claim 1, wherein: The encapsulation layer further includes a first organic refractive layer, which is disposed between the organic encapsulation layer and the first inorganic encapsulation layer. The refractive index of the first organic refractive layer is higher than that of the organic encapsulation layer.

5. The display panel according to claim 4, wherein: A side of the first organic refractive layer close to the first inorganic encapsulation layer is a plane; The film interface of the first organic refractive layer close to the anti-peeping sub-pixel has the same shape as the refractive surface.

6. A display device, characterized in that: The device comprises a driving circuit and the display panel according to any one of claims 1 to 5, wherein the driving circuit is used to drive the display panel to display.

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