Display panel and display device

Abstract

The invention discloses a display panel and a display device. The display panel further comprises a substrate, a pixel definition layer, display sub-pixels, peep-proof sub-pixels, a packaging layer and a shading layer. The packaging layer comprises an organic packaging layer and a first inorganic packaging layer, and the first inorganic packaging layer is arranged on the side, away from the substrate, of the organic packaging layer; in the area where the peep-proof sub-pixels are located, a refraction face is arranged on the side, close to the first inorganic packaging layer, of the organic packaging layer, and the refraction face is used for refracting part of light emitted by the peep-proof sub-pixels to the light shielding layer and then emitting the light out of the opening area. By arranging the refracting surface, the utilization rate of peep-proof light is improved, and the peep-proof effect of the display panel is improved.

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 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 is also a hot topic of discussion recently.

[0003] In an anti-peeping technology of adding anti-peeping pixels, an anti-peeping sub-pixel can be set between two adjacent display sub-pixels. The anti-peeping light emitted by the anti-peeping sub-pixel will interfere with the display effect at a large viewing angle, thereby achieving an anti-peeping effect. However, the utilization rate of the anti-peeping light is currently low, resulting in a poor anti-peeping effect. 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 a side viewing angle 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 one 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 to block the outgoing light of the light-shielding layer perpendicular to the base substrate; wherein the encapsulation layer comprises 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 arranged 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.

[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 at a position of the organic encapsulation layer 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-peeping 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 a refractive index of the first organic refractive layer is higher than a refractive index 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 layer interface of the first organic refractive layer close to the anti-peep sub-pixel is consistent with a shape of the refractive surface.

[0013] Optionally, in the area where the anti-peeping sub-pixel is located, the thickness of the light shielding layer gradually decreases in a direction 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 layer interface between the first inorganic encapsulation layer and the organic encapsulation layer in the encapsulation layer without adding additional structures, so that the film layer interface between the first inorganic encapsulation layer and the organic encapsulation layer forms a refractive surface, and part of the light emitted by the anti-peeping sub-pixel to the light shielding layer can be refracted and emitted from the opening area, thereby improving the brightness and anti-peeping effect of the anti-peeping sub-pixel at 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 ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the drawings: Figure 1 is a schematic top view of a display panel according to a first embodiment of the present application; Figure 2 is a schematic cross-sectional view of a display panel according to a first embodiment of the present application; Figure 3 It is a schematic diagram of the luminous intensity of the anti-peeping sub-pixel without a refractive surface and the display sub-pixel at different angles of the present application; Figure 4 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 5 is a schematic diagram of another display panel of the first embodiment of the present application; Figure 6 is a schematic diagram of another display panel of the first embodiment of the present application; Figure 7 is a schematic diagram of a display panel according to a second embodiment of the present application; Figure 8 is a schematic diagram of another display panel according to the second embodiment of the present application; Fig. 9 is a schematic diagram of a display panel according to a third embodiment of the present application; Fig.10 is a schematic diagram of a display device of the present application.

[0017] 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, shading layer; 200, display device; 210, driving circuit. DETAILED DESCRIPTION

[0018] 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, but the present application can be implemented in many alternative forms and should not be construed as being limited to only the embodiments described herein.

[0019] In the description of the present application, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating relative importance or implicitly indicating the number of technical features indicated. Therefore, unless otherwise specified, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features; "multiple" means two or more. In addition, the terms "upper", "lower", "left", "right", "vertical", "horizontal", etc. indicating orientation or positional relationships are described based on the orientation or relative positional relationships shown in the accompanying drawings, and are only for the convenience of describing the simplified description of the present 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 the present application. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0020] The present application is described in detail below with reference to the accompanying drawings and optional embodiments.

[0021] Figure 1 is a schematic top view of a display panel of the first embodiment of the present application, Figure 2 is a cross-sectional schematic diagram of a display panel of the first embodiment of the present application, see Figure 1 to Figure 2As shown, the present application discloses a display panel 100, the display panel 100 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, 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, 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 shading layer 150 is arranged on the anti-peeping sub-pixel 130, and is used to block the outgoing light of the shading layer 150 that is 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 a 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 arranged on a 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 shading layer 150 and then emit it from the opening area 101.

[0022] The present application sets a refractive surface 1421 in the area of ​​the anti-peeping sub-pixel 130. When the anti-peeping light of the anti-peeping sub-pixel 130 is emitted, as much anti-peeping light as possible can be emitted from the opening area 101 through the refraction effect of the refractive surface 1421. That is, the emitted light of the anti-peeping sub-pixel 130 perpendicular to the base substrate 111 is refracted to be emitted from the opening area 101, thereby forming an anti-peeping effect, thereby 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, and the light emitted from part of the anti-peeping sub-pixel 130 toward the light-shielding layer 150 can be refracted and emitted from the area in the opening area 101 or the non-opening area 102 that is not blocked by the light-shielding layer 150, 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.

[0023] Generally speaking, the direction perpendicular to the base substrate 111 is the normal direction of the display panel 100, and 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 reach up to 80 degrees at most. 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 reach up to 60 degrees at most. For anti-peeping, it is necessary to interfere when the angle between the outgoing light and the normal direction of the display panel 100 exceeds 25 degrees, that is, the angle between the outgoing light and the normal direction of the display panel 100 is in the range of 0 to 25 degrees as the positive viewing angle, and the range exceeding 25 degrees is the anti-peeping viewing angle. The light of the anti-peeping sub-pixel 130 is emitted in the range exceeding 25 degrees, so that the display sub-pixel under the anti-peeping viewing angle has different grayscales and mixed colors, so that the display content cannot be seen clearly under the anti-peeping viewing angle, thereby achieving anti-peeping. However, since most of the vertically emitted light of the anti-peeping sub-pixel 130 is blocked by the light shielding layer 150, the light utilization rate under the anti-peeping viewing angle is low. It is worth mentioning that the above-mentioned light shielding layer 150 needs to completely block the vertically emitted light of the anti-peeping sub-pixel 130, so the area of ​​the light shielding layer 150 is larger than the light emitting area of ​​the anti-peeping sub-pixel 130, but 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, so the above-mentioned anti-peeping light can be emitted from the opening area 101 or the area in the non-opening area 102 that is not blocked by the light shielding layer 150 after refraction.

[0024] 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 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 the angle. At present, when the anti-peeping sub-pixel 130 and the display sub-pixel 120 both adopt the structure of the light-emitting unit, and are respectively formed at the opening position of the pixel definition layer 112, that is, 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 both evaporated at the same time, 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. Since the present application uses 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.

[0025] Continue to see Figure 2As shown, the present application improves the film refractive index and the film interface in the encapsulation layer 140, so that, for example, the film interface between the first inorganic encapsulation layer 141 and the organic encapsulation layer 142 forms a refractive surface 1421, thereby enhancing the anti-peeping light of the anti-peeping sub-pixel 130 at 25 to 45 degrees. Generally speaking, the organic encapsulation layer 142 in the encapsulation layer 140 is formed of an organic insulating material, which is thicker, and the film interface close to the first inorganic encapsulation layer 141 is relatively flat, and the film interface is substantially parallel to the base substrate 111. The refractive surface 1421 in this embodiment needs to be non-parallel to the base substrate 111, and form an angle with the outgoing light (which can be referred to as the vertical outgoing light) of the anti-peeping sub-pixel 130 perpendicular to the base substrate, and then the part of the vertical outgoing light can be refracted to the opening area 101 through the effect of refraction, so as to enhance the outgoing brightness of the anti-peeping sub-pixel 130 at 25 to 45 degrees, thereby improving the anti-peeping capability.

[0026] Specifically, the angle between the refractive surface 1421 and the outgoing light of the anti-peeping sub-pixel 130 perpendicular to the base substrate 111 is within a first angle range, and the first angle range is greater than 0 degrees and less than 90 degrees. When there is an angle incident between the vertical outgoing light of the anti-peeping sub-pixel 130 and the refractive surface 1421, due to the different refractive indices of the organic encapsulation layer 142 and the first inorganic encapsulation layer 141, the vertical outgoing light of the anti-peeping sub-pixel 130 will be refracted by the refractive surface 1421, thereby changing the outgoing angle, so that it can be emitted from the opening area 101 where the adjacent display sub-pixel 120 is located, thereby forming an anti-peeping function.

[0027] 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 relatively large, when the light enters the first inorganic encapsulation layer 141 from the organic encapsulation layer 142, the light will be offset close to the normal direction of the refractive surface 1421. If it is necessary to make this part of the light emerge 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 emerge from the opening area 101, thereby increasing the light intensity at the anti-peeping viewing angle between 25 degrees and 45 degrees.

[0028] 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, so it is 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.

[0029] 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.

[0030] 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 at this refractive index can also refract the vertically emitted light of the anti-peeping sub-pixel 130 to the opening area 101.

[0031] 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.

[0032] 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.

[0033] In this embodiment, a groove 1423 is provided at a position of the organic encapsulation layer 142 corresponding to the opening area 101, and 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 side wall of the groove 1423 is inclined toward the direction of the anti-peep sub-pixel 130, and the side wall is the refractive surface 1421.

[0034] In this solution, the organic encapsulation layer 142 can be provided with a groove 1423 at the position of the opening area 101 so that the side wall of the groove 1423 has a certain inclination angle to act as a refraction 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 refraction surface 1421 needs to pass through the flat layer to enter the air, because this part of the anti-peeping light is not vertically incident on the flat layer. Therefore, 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 ability with an anti-peeping viewing angle between 25 degrees and 45 degrees.

[0035] Figure 4 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, see Figure 4 As shown, a refractive surface 1421 is formed by setting a groove 1423 in the organic encapsulation layer 142, and the angle between the refractive surface 1421 and the base substrate 111 is in the range of 30 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 between 1.4 and 1.5. It can be seen that when the anti-peeping viewing angle is in the range of 30 to 45 degrees, the light output brightness of the anti-peeping sub-pixel 130 is greatly enhanced, so that the anti-peeping capability under this anti-peeping viewing angle is greatly improved.

[0036] 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 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.

[0037] 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.

[0038] In this embodiment, the organic encapsulation layer 142 in the area where the anti-peeping sub-pixel 130 is located is formed into refractive surfaces 1421 that are inclined toward the anti-peeping sub-pixel 130, and the inclination directions of two adjacent refractive surfaces 1421 are different, but the normal extension directions of both pass through the anti-peeping sub-pixel 130. When the angle between the refractive surface 1421 and the base substrate 111 is larger, the required thickness of the organic encapsulation layer 142 is larger, which is of course related to the area of ​​the anti-peeping sub-pixel 130.

[0039] Figure 6 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 a plurality of refractive surfaces 1421 .

[0040] Compared with the above-mentioned embodiment, when the side wall of the groove 1423 is used as the refractive surface 1421, the utilization rate of the vertically emitted light of the anti-peeping sub-pixel 130 is also low, and 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 to the light shielding layer 150, and the film layer interface of the organic encapsulation layer 142 in the area where the anti-peeping sub-pixel 130 is located is set to an inclined plane, so that 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, so as to avoid 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.

[0041] Figure 7 is a schematic diagram of a display panel of 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 surface or an arc surface so that the normal direction of each position gradually changes, thereby achieving more uniform light emission. The normal directions of the refractive surface 1421 at different positions are different, so that the vertical emission light of the anti-peeping sub-pixel 130 has different offsets at different positions, so that the light of the anti-peeping sub-pixel 130 is more strongly divergent after passing through, and the light at each anti-peeping angle is more uniform, achieving a better anti-peeping effect.

[0042] Specifically, in the area where the anti-peeping sub-pixel 130 is located, a protrusion 1422 is provided on the organic encapsulation layer 142, and the side of the protrusion 1422 close to the first inorganic encapsulation layer 141 is a curved surface as a refractive surface 1421. Since the normal direction of each curved surface is different, and the normal direction changes gradually. When the vertically emitted light is irradiated to 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, it means that the offset of the vertical emission direction to the normal remains unchanged, but the normal direction gradually changes, so that the final emission direction of the vertically emitted light also gradually changes, making the anti-peeping light more uniform. And by setting the curvature of the protrusion 1422, the anti-peeping light enhancement of the changing angle can be achieved. The setting of the protrusion 1422 can be one or more. In this embodiment, two protrusions 1422 are provided as an example, and the refractive surface 1421 of the protrusion 1422 is a curved surface, and the curvature can be designed according to actual conditions.

[0043] 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-peeping light.

[0044] For the light shielding layer 150 in this embodiment, in the area where the anti-peeping sub-pixel 130 is located, the thickness of the light shielding layer 150 gradually decreases from the middle area toward the surrounding areas.

[0045] 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 emitted light, so that the cross-sectional view 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 effect of shading. 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. A reflective layer can also be set on the side of the light shielding layer 150 close to the anti-peeping sub-pixel 130, so that part of the vertically emitted light that cannot be refracted by the refractive surface 1421 can be reflected to the opening area 101, thereby realizing the brightness enhancement of the anti-peeping light. It is also necessary to add an additional reflective layer, which is difficult to achieve and makes the film layer more complicated. 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 by the black matrix.

[0046] Figure 8is a schematic diagram of another display panel of 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, and on the orthographic projection of the base substrate 111, the groove 1423 partially overlaps with the light shielding layer 150; the side wall of the groove 1423 is provided on a concave arc surface, which is a refractive surface 1421 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 side wall 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.

[0047] Fig. 9 is a schematic diagram of a display panel of the third embodiment of the present application, see Fig. 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, it is necessary to use a thicker first inorganic encapsulation layer 141 to flatten this part of the film. However, when the film thickness of the first inorganic encapsulation layer 141 is thick, cracks are prone to occur, which leads to water and oxygen invading the encapsulation layer 140, and there is a risk of poor encapsulation.

[0048] In this regard, in this embodiment, the encapsulation layer 140 further includes a first organic refractive layer 144 , which is disposed between the organic encapsulation layer 142 and the first inorganic encapsulation layer, and has a refractive index higher than that of the organic encapsulation layer 142 .

[0049] In this embodiment, the first organic refractive layer 144 may be made of an organic insulating material, but its refractive index needs to be higher than that of the organic encapsulation layer 142, so that when the light is emitted, the light can be deviated from the direction of the normal line, so that the light can be emitted from the opening area 101. The first organic refractive layer 144 has a certain buffering capacity, and can cover the uneven refractive surface 1421 of the film layer formed by the organic encapsulation layer 142, thereby improving the cracks between the refractive surface 1421 and the first inorganic encapsulation layer 141, thereby improving the quality of the first inorganic encapsulation layer 141.

[0050] In a specific embodiment, the refractive index of the first organic refractive layer 144 is between the refractive indexes of the organic encapsulation layer 142 and the first inorganic encapsulation layer 141, so that a refraction 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.

[0051] Fig.10 is a schematic diagram of the display device of the present application, see Fig.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, and the driving circuit 210 is used to drive the display panel 100 to display.

[0052] It should be noted that the inventive concept of the present 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 embodiments or technical features described above can be arbitrarily combined to form new embodiments. After the embodiments or technical features are combined, the original technical effects will be enhanced.

[0053] The above content is a further detailed description of the present application in combination with specific optional implementation methods, and it cannot be determined that the specific implementation of the present application is limited to these descriptions. For ordinary technicians in the technical field to which the present application belongs, several simple deductions or substitutions can be made without departing from the concept of the present application, which should be deemed 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 substrate; A pixel definition layer is disposed 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 comprises 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 one 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.

2. The display panel according to claim 1, characterized in that: 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 0 degrees and less than 90 degrees.

3. The display panel according to claim 1, characterized in that: 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; 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.

4. The display panel according to claim 2, characterized in that: The organic encapsulation layer is provided with a groove 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 anti-peeping sub-pixel, and the side wall is the refractive surface.

5. The display panel according to claim 2, characterized in that: The refractive surface is a curved surface; the normal directions at different positions of the refractive surface are different.

6. The display panel according to claim 5, characterized in that: In the area where the anti-peeping sub-pixel is located, a protrusion is arranged 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.

7. The display panel according to claim 2, characterized in that: 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 the refractive index of the first organic refractive layer is higher than the refractive index of the organic encapsulation layer.

8. The display panel according to claim 7, characterized in that: A side of the first organic refractive layer close to the first inorganic encapsulation layer is a plane; The film layer interface of the first organic refractive layer close to the anti-peeping sub-pixel has the same shape as the refractive surface.

9. The display panel according to claim 2, characterized in that: In the area where the anti-peeping sub-pixel is located, the thickness of the light shielding layer gradually decreases in the direction from the middle area toward the surrounding areas.

10. A display device, characterized in that: It comprises a driving circuit and the display panel according to any one of claims 1 to 9, wherein the driving circuit is used to drive the display panel to display.

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