Display panel, preparation method of display panel and electronic device

Abstract

The embodiment of the present application provides a display panel, a preparation method of the display panel and electronic equipment, and relates to the technical field of display. The display panel comprises an array substrate, a light-emitting layer, a refractive layer and a shielding layer. The light-emitting layer is located on one side of the array substrate. The light-emitting layer comprises at least one first light-emitting sub-pixel and at least one second light-emitting sub-pixel. The refractive layer is located on a side of the light-emitting layer away from the array substrate. The refractive layer comprises a first refractive part and a second refractive part, and the refractive indexes of the first refractive part and the second refractive part are different. The shielding layer is located on a side of the refractive layer away from the array substrate. The shielding layer comprises at least one shielding strip. In the case of guaranteeing normal display of light emission at a front viewing angle, the specific target object arranged in the display panel can be visible at a side.

Description

Technical Field

[0001] This application relates to the field of display technology, and more specifically, to a display panel, a method for manufacturing the display panel, and an electronic device. Background Technology

[0002] With the development of display technology, logos or other target objects can be added to the display area of ​​display products. When the display product is displayed, these logos or other target objects will be observed by users, which can promote the brand of the screen manufacturing company.

[0003] Furthermore, in existing technologies, adding logos or other target objects to the display area of ​​a display product can affect the normal use of the display product. Summary of the Invention

[0004] To overcome the technical problems mentioned in the background, this application provides a display panel, which includes:

[0005] Array substrate;

[0006] A light-emitting layer located on one side of the array substrate; the light-emitting layer includes at least one first light-emitting sub-pixel and at least one second light-emitting sub-pixel;

[0007] A refractive layer located on the side of the light-emitting layer away from the array substrate; the refractive layer includes a first refractive portion and a second refractive portion, wherein the orthographic projection of the first refractive portion on the array substrate at least partially coincides with the orthographic projection of the first light-emitting sub-pixel on the array substrate; the orthographic projection of the second refractive portion on the array substrate at least partially coincides with the orthographic projection of the second light-emitting sub-pixel on the array substrate; the refractive indices of the first refractive portion and the second refractive portion are different.

[0008] A shielding layer located on the side of the refractive layer away from the array substrate; the shielding layer includes at least one shielding strip, the orthographic projection of the shielding strip on the array substrate at least partially surrounding the orthographic projection of at least one of the first light-emitting sub-pixel and the second light-emitting sub-pixel on the array substrate.

[0009] In one possible implementation, the refractive layer includes an organic encapsulation layer;

[0010] Preferably, the display panel further includes a first inorganic encapsulation layer located on the side of the organic encapsulation layer closer to the array substrate and a second inorganic encapsulation layer located on the side of the organic encapsulation layer away from the array substrate.

[0011] In one possible implementation, the shielding strip includes touch electrode traces.

[0012] In one possible implementation, the occlusion layer includes a black matrix layer; the occlusion strips are provided in multiple forms, and the multiple occlusion strips are interwoven to form the black matrix layer.

[0013] In one possible implementation, the absolute value of the difference between the refractive index of the first refractive portion and the refractive index of the second refractive portion is in the range of 0.05-0.3;

[0014] Preferably, the refractive index of the refractive layer is in the range of 1.4-1.7.

[0015] In one possible implementation, the thickness of the first refractive portion is equal to the thickness of the second refractive portion along a direction perpendicular to the array substrate;

[0016] Preferably, the thickness of the refractive layer is in the range of 5μm-20μm along the direction perpendicular to the array substrate.

[0017] In one possible implementation, the ratio of the width of the orthographic projection of the blocking strip on the array substrate to the width of the orthographic projection of the first light-emitting sub-pixel or the second light-emitting sub-pixel on the array substrate is 0.05-1.5.

[0018] Preferably, the ratio of the width of the orthographic projection of the shielding strip on the array substrate to the width of the orthographic projection of the first light-emitting sub-pixel or the second light-emitting sub-pixel on the array substrate is 1-1.5.

[0019] In one possible implementation, the minimum distance between the orthographic projection of the edge of the shielding strip on the array substrate and the orthographic projection of the edge of the first light-emitting sub-pixel on the array substrate is equal to the minimum distance between the orthographic projection of the edge of the shielding strip on the array substrate and the orthographic projection of the edge of the second light-emitting sub-pixel on the array substrate.

[0020] Preferably, the minimum distance between the orthographic projection of the edge of the shielding strip on the array substrate and the orthographic projection of the edge of the first light-emitting sub-pixel and / or the edge of the second light-emitting sub-pixel on the array substrate is 0-12 μm.

[0021] In one possible implementation, this application also provides a method for manufacturing a display panel, the method comprising:

[0022] Provide an array substrate;

[0023] A light-emitting layer is formed on one side of the array substrate; the light-emitting layer includes at least one first light-emitting sub-pixel and at least one second light-emitting sub-pixel;

[0024] A refractive layer is formed on the side of the light-emitting layer away from the array substrate; the refractive layer includes a first refractive portion and a second refractive portion, wherein the orthographic projection of the first refractive portion on the array substrate at least partially coincides with the orthographic projection of the first light-emitting sub-pixel on the array substrate; the orthographic projection of the second refractive portion on the array substrate at least partially coincides with the orthographic projection of the second light-emitting sub-pixel on the array substrate; the refractive indices of the first refractive portion and the second refractive portion are different;

[0025] A shielding layer is formed on the side of the refractive layer away from the array substrate; the shielding layer includes at least one shielding strip, the orthographic projection of the shielding strip on the array substrate at least partially surrounds the orthographic projection of at least one of the first light-emitting sub-pixel and the second light-emitting sub-pixel on the array substrate;

[0026] Preferably, the step of forming a refractive layer on the side of the light-emitting layer away from the array substrate includes:

[0027] A first inorganic encapsulation layer, an organic encapsulation layer, and a second inorganic encapsulation layer are sequentially formed on the side of the light-emitting layer away from the array substrate; the refractive layer includes an organic encapsulation layer;

[0028] During the organic encapsulation layer curing stage, the organic encapsulation layer is treated by heating or ultraviolet light to make the refractive index of the first refractive part different from that of the second refractive part.

[0029] Alternatively, the step of forming a refractive layer on the side of the light-emitting layer away from the array substrate includes:

[0030] A first inorganic encapsulation layer, an organic encapsulation layer, and a second inorganic encapsulation layer are sequentially formed on the side of the light-emitting layer away from the array substrate; the refractive layer includes an organic encapsulation layer;

[0031] During the organic encapsulation layer curing stage, a heating plate or a cooling plate is provided on the side of the organic encapsulation layer away from the array substrate so that the refractive index of the first refractive part is different from that of the second refractive part.

[0032] In one possible implementation, this application also provides an electronic device, which includes the display panel described in this application or a display panel prepared by the method described in this application.

[0033] Compared with the prior art, this application has the following beneficial effects:

[0034] This application provides a display panel, a method for manufacturing the display panel, and an electronic device. By setting the refractive layer as a first refractive part and a second refractive part with different refractive indices, and setting a shielding strip at the position of the first refractive part and / or the second refractive part, a specific target object set in the display panel can be seen from the side while ensuring normal display of light output at the front viewing angle. Attached Figure Description

[0035] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0036] Figure 1 This is a schematic diagram of the structure of a display panel that displays a target object in the front view, as provided in the embodiments of this application.

[0037] Figure 2 A cross-sectional schematic diagram showing that the refractive index of the first refractive portion of the display panel provided in this embodiment is less than the refractive index of the second refractive portion;

[0038] Figure 3 A schematic diagram of a structure in which the target object cannot be seen from the frontal view of the display panel provided in this embodiment of the application;

[0039] Figure 4 This is a schematic diagram of the structure of the target object that can be seen from the side view display panel provided in the embodiments of this application;

[0040] Figure 5 A cross-sectional schematic diagram showing that the refractive index of the first refractive portion of the display panel provided in this application embodiment is greater than the refractive index of the second refractive portion;

[0041] Figure 6 A cross-sectional schematic diagram of the refractive layer including the inorganic encapsulation layer provided in the embodiments of this application;

[0042] Figure 7 A top view of the refractive strip and the first light-emitting sub-pixel provided in an embodiment of this application;

[0043] Figure 8 One of the line graphs showing the brightness difference between a target object and a non-target object from different viewing angles in the display panel provided in the embodiments of this application;

[0044] Figure 9 A schematic diagram showing the first light-emitting sub-pixel being blocked when viewed from the side at 36°, as provided in an embodiment of this application;

[0045] Figure 10A schematic diagram showing the second light-emitting sub-pixel being blocked when viewed from the side at 36°, as provided in an embodiment of this application;

[0046] Figure 11 A schematic diagram showing the first light-emitting sub-pixel being occluded when viewed from the side at 68°, as provided in an embodiment of this application;

[0047] Figure 12 A schematic diagram showing the second light-emitting sub-pixel being occluded when viewed from the side at 68°, as provided in an embodiment of this application;

[0048] Figure 13 A schematic diagram showing the first light-emitting sub-pixel being occluded when viewed from the side at 78°, as provided in an embodiment of this application;

[0049] Figure 14 A schematic diagram showing the second light-emitting sub-pixel being blocked when viewed from the side at 78°, as provided in an embodiment of this application;

[0050] Figure 15 This is the second line graph showing the brightness difference between a target object and a non-target object in a display panel from different viewing angles, as provided in the embodiments of this application.

[0051] Figure 16 A schematic diagram showing the first light-emitting sub-pixel being occluded when the viewing angle is 0°, as provided in an embodiment of this application;

[0052] Figure 17 A schematic diagram showing the second light-emitting sub-pixel being occluded when the viewing angle is 0°, as provided in an embodiment of this application;

[0053] Figure 18 A schematic diagram showing the first light-emitting sub-pixel being occluded when viewed from the side at 90°, as provided in an embodiment of this application;

[0054] Figure 19 A schematic diagram showing the second light-emitting sub-pixel being blocked when viewed from the side at 90°, as provided in an embodiment of this application;

[0055] Figure 20 A schematic flowchart illustrating a method for manufacturing a display panel according to an embodiment of this application;

[0056] Figure 21 This is one of the flowcharts illustrating the specific execution method of step S12 provided in the embodiments of this application;

[0057] Figure 22 This is the second flowchart illustrating the specific execution method of step S12 provided in the embodiments of this application.

[0058] Reference numerals: 1. Display panel; 11. Target object; 2. Array substrate; 3. Light-emitting layer; 31. First light-emitting sub-pixel; 32. Second light-emitting sub-pixel; 4. Refractive layer; 41. First refractive part; 42. Second refractive part; 5. Shielding layer; 51. Shielding strip; 6. First inorganic encapsulation layer; 7. Organic encapsulation layer; 8. Second inorganic encapsulation layer. Detailed Implementation

[0059] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0060] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0061] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0062] In the description of this application, it should be noted that the terms "center," "upper," "lower," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of the invention is in use. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. In addition, the terms "first," "second," and "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0063] It should be noted that, where there is no conflict, different features in the embodiments of this application can be combined with each other.

[0064] Display panels typically feature a target object on the back of the product or on the power-on screen. This target object can be a company logo or other personalized icons and text, facilitating manufacturer identification and promotion. However, the brands of the various components used often lack promotional channels and fail to attract consumer attention. To increase consumer awareness, a target object can be added to the front of the display panel. However, please see... Figure 1 In related technologies, when viewing the display panel 1 directly, the user can also see the target object 11 added to the front of the display panel 1, which affects the normal use of the display panel 1.

[0065] In view of this, this embodiment provides a solution that can reduce the impact of the target object 11 on the normal use of the display panel 1 when viewed directly. The solution provided in this embodiment will be described in detail below.

[0066] Please see Figure 2 This embodiment provides a display panel 1, which includes an array substrate 2, a light-emitting layer 3, a refractive layer 4, and a shielding layer 5.

[0067] The array substrate 2 includes a back plate and an electrode located on one side of the back plate. The back plate may include multiple metal traces and / or multiple driving units for transmitting signals or electrical energy. The metal traces and / or driving units are electrically connected to the electrodes. The electrodes are electrically connected to the light-emitting layer 3. The metal traces and driving units can be used to drive the light-emitting layer 3 to emit light.

[0068] The light-emitting layer 3 is located on one side of the array substrate 2; the light-emitting layer 3 includes at least one first light-emitting sub-pixel 31 and at least one second light-emitting sub-pixel 32. The display panel 1 also includes a pixel defining layer located on one side of the array substrate 2. The pixel defining layer has multiple pixel openings. The first light-emitting sub-pixel 31 and the second light-emitting sub-pixel 32 are located in different pixel openings. The light-emitting layer 3 emits light under the voltage difference control generated by the anode and cathode of the display panel 1. The first light-emitting sub-pixel 31 can emit light of the same color or light of different colors.

[0069] The refractive layer 4 is located on the side of the light-emitting layer 3 away from the array substrate 2. The refractive layer 4 includes a first refractive portion 41 and a second refractive portion 42. The orthographic projection of the first refractive portion 41 on the array substrate 2 at least partially coincides with the orthographic projection of the first light-emitting sub-pixel on the array substrate 2. The orthographic projection of the second refractive portion 42 on the array substrate 2 at least partially coincides with the orthographic projection of the second light-emitting sub-pixel on the array substrate 2. The refractive indices of the first refractive portion 41 and the second refractive portion 42 are different. The first refractive portion 41 is a target object 11 disposed in the display panel 1.

[0070] The shielding layer 5 is located on the side of the refractive layer 4 away from the array substrate 2; the shielding layer 5 includes at least one shielding strip 51, the orthographic projection of the shielding strip 51 on the array substrate 2 at least partially surrounds the orthographic projection of at least one of the first light-emitting sub-pixel 31 and the second light-emitting sub-pixel 32 on the array substrate 2, and the shielding strip 51 has the function of shielding light.

[0071] Since the blocking strip 51 at least partially surrounds the first light-emitting sub-pixel 31 and / or the second light-emitting sub-pixel 32, and the blocking strip 51 is not positioned in the frontal viewing direction of the first light-emitting sub-pixel 31 or the second light-emitting sub-pixel 32, and the blocking strip 51 has a light-blocking function, when viewing the display panel 1 directly, the amount of light emitted from the first light-emitting sub-pixel 31 after passing through the first refraction part 41 and the amount of light emitted from the second light-emitting sub-pixel 32 after passing through the second refraction part 42 are basically equivalent. The brightness difference between the light passing through the first refraction part 41 and the second refraction part 42 is relatively small; a brightness difference greater than 2% is required to distinguish the target object 11 positioned on the display panel 1. Therefore, please refer to... Figure 3 In this embodiment, the target object 11 cannot be seen when the user looks directly at the display panel 1, thus not affecting the normal use of the display panel 1 when the user looks directly at it. That is, when the display panel 1 is actually displaying a screen, the area where the target object 11 is located is part of the actual screen displayed by the display panel.

[0072] Please see again Figure 2 In some embodiments, the refractive index of the first refractive portion 41 is less than that of the second refractive portion 42. The angle of refraction of light emitted from the first light-emitting sub-pixel 31 into the first refractive portion 41 is α1, and the angle of refraction of light emitted from the second light-emitting sub-pixel 32 into the second refractive portion 42 is β. Since the refractive index of the first refractive portion 41 is less than that of the second refractive portion 42, α1 > β. Therefore, during the change of viewing angle from a frontal view to a side view, the light emitted from the first light-emitting sub-pixel 31 is blocked by the blocking strip 51 after passing through the first refractive portion 41. This creates a difference in the lateral transmission distance between the light emitted from the first light-emitting sub-pixel 31 and the light emitted from the second light-emitting sub-pixel 32 on the display panel 1, resulting in less light reaching the side of the display panel 1 within a certain angle range after passing through the first refractive portion 41 compared to the amount of light reaching the side of the display panel 1 within the same angle range after passing through the second refractive portion 42. Therefore, please refer to... Figure 4 Within this angle range, when viewing the display panel 1 from the side, the brightness of the target object 11 set in the display panel 1 will be darker than the non-target object part of the display panel 1, and the brightness difference between the target object 11 and the non-target object part of the display panel 1 is greater than 2%. Therefore, while ensuring normal light output and display from the front viewing angle, the target object 11 set in the display panel 1 can be seen from this angle range on the side.

[0073] Please see Figure 5 In some embodiments, the refractive index of the first refractive portion 41 is greater than that of the second refractive portion 42. The angle of refraction of light emitted from the first light-emitting sub-pixel 31 into the first refractive portion 41 is α2, and the angle of refraction of light emitted from the second light-emitting sub-pixel 32 into the second refractive portion 42 is β. Since the refractive index of the first refractive portion 41 is greater than that of the second refractive portion 42, α2 < β. It is evident that the light emitted from the first light-emitting sub-pixel 31 is delayed after being blocked by the blocking strip 51 after passing through the first refractive portion 41. This creates a difference in the lateral transmission distance between the light emitted from the first light-emitting sub-pixel 31 and the light emitted from the second light-emitting sub-pixel 32 on the display panel 1, resulting in a greater amount of light illuminating the side of the display panel 1 within a certain angle range after passing through the first refractive portion 41 than the amount of light illuminating the side of the display panel 1 within that angle range after passing through the second refractive portion 42. Therefore, please refer to... Figure 4 Within this angle range, when viewing the display panel 1 from the side, the brightness of the target object 11 set in the display panel 1 will be brighter than the non-target object part of the display panel 1, and the brightness difference between the target object 11 and the non-target object part of the display panel 1 is greater than 2%. Therefore, under the condition of ensuring normal light output and display from the frontal view, the target object 11 set in the display panel 1 can be seen from this angle range on the side.

[0074] Based on the above design, this embodiment sets the refractive layer 4 as a first refractive part 41 and a second refractive part 42 with different refractive indices, and sets a shielding strip 51 at the position of the first refractive part 41 and / or the second refractive part 42, so that the target object 11 set in the display panel 1 can only be seen from the side, thereby reducing the impact on the normal use of the display panel 1.

[0075] In one possible implementation, please refer to Figure 6 The refractive layer 4 includes an organic encapsulation layer 7, a first inorganic encapsulation layer 6 is provided on the side of the organic encapsulation layer 7 close to the array substrate 2, and a second inorganic encapsulation layer 8 is provided on the side of the organic encapsulation layer 7 away from the array substrate 2.

[0076] The first inorganic encapsulation layer 6 and the second inorganic encapsulation layer 8 can be made of inorganic materials such as silicon nitride. The organic encapsulation layer 7 can be made of curable organic materials (including photocuring or thermal curing). For example, the organic encapsulation layer 7 can be made of at least one of epoxy resin-based organic materials, acrylate-based organic materials, and organosilicon-based materials. The organic encapsulation layer 7 can be prepared using IJP (Ink Jet Printing) technology. The first inorganic encapsulation layer 6 and the second inorganic encapsulation layer 8 can be prepared using CVD (Chemical Vapor Deposition) or ALD (Atomic Layer Deposition).

[0077] In this embodiment, the organic encapsulation layer 7 in the encapsulation layer is used as the refractive layer 4, and the refractive indices of the first refractive portion 41 and the second refractive portion 42 of the organic encapsulation layer 7 are set to be different. Under otherwise unchanged conditions, the thicker the refractive layer 4, the greater the brightness difference between the target object 11 and the rest of the display panel 1. The thicker the organic encapsulation layer 7, the stronger its flexible bending capability. Therefore, using the organic encapsulation layer 7 as the refractive layer 4 makes it easier to see the target object 11 from the side of the display panel 1 and also makes it easier to install the refractive layer 4.

[0078] In one possible implementation, the shielding strip 51 includes touch electrode traces. Since the touch electrode traces have light-shielding properties, using the touch electrode traces in the display panel 1 as the shielding strip 51 eliminates the need for an additional shielding strip 51 in the display panel 1. This reduces the complexity of the film layers in the display panel 1 and lowers the manufacturing cost of the display panel 1.

[0079] In one possible implementation, the shielding layer 51 includes a black matrix layer; multiple shielding strips 51 are provided, and the multiple shielding strips 51 are interwoven to form the black matrix layer. The material of the shielding strips 51 includes black adhesive, which has the characteristic of blocking light. Therefore, by using the black adhesive that makes up the black adhesive matrix in the display panel 1 as the shielding strips 51, it is not necessary to set additional shielding strips 51 in the display panel 1, thereby reducing the complexity of the film layers in the display panel 1 and reducing the manufacturing cost of the display panel 1.

[0080] In one possible implementation, the refractive index of the refractive layer 4 is in the range of 1.4-1.7. For example, the refractive index of the refractive layer 4 can be 1.4, 1.5, 1.6 or 1.7. By reasonably setting the refractive index of the refractive layer 4, the target object 11 can be seen from the side of the display panel 1 without affecting the normal display of the display panel 1 at the front viewing angle.

[0081] Preferably, the absolute value of the difference between the refractive index of the first refractive part 41 and the refractive index of the second refractive part 42 is in the range of 0.05-0.3.

[0082] The difference in refractive index between the first refractive part 41 and the second refractive part 42 can affect the prominence of the target object 11 when viewed from the side of the display panel 1. Specifically, the greater the difference in refractive index between the first refractive part 41 and the second refractive part 42, the greater the difference in the lateral transmission distance between the target object 11 and the non-target part of the display panel 1 on the display panel 1, and the greater the prominence of the target object 11. Therefore, the target object 11 can be seen more clearly from the side of the display panel 1. Thus, given a fixed range of refractive index of the refractive layer 4, a reasonable setting of the difference in refractive index between the first refractive part 41 and the second refractive part 42 allows the target object 11 to be seen more clearly from the side of the display panel 1. It is worth noting that the difference in refractive index between the first refractive part 41 and the second refractive part 42 should not be too large. If it is too large, the target object 11 may also be visible when viewing the image displayed on the display panel from a direct angle, thus affecting the display effect.

[0083] In one possible implementation, please refer again. Figure 2 Along the direction perpendicular to the array substrate 2, the thickness D of the refractive layer 4 ranges from 5μm to 20μm. For example, the thickness D can be 5μm, 7μm, 10μm, 15μm, 18μm, or 20μm. If the thickness D of the refractive layer 4 is set too small, the target object 11 will not be prominent enough. If the thickness D of the refractive layer 4 is set too large, the thickness of the display panel 1 will be increased. Therefore, by reasonably setting the thickness D of the refractive layer 4, the target object 11 can be made more prominent when viewed from the side of the display panel 1 without increasing the thickness of the display panel 1, so that the target object 11 can be seen more clearly.

[0084] Preferably, please see again. Figure 2 Along a direction perpendicular to the array substrate 2, the thickness of the first refractive portion 41 is equal to the thickness of the second refractive portion 42. By setting the thickness of the first refractive portion 41 and the thickness of the second refractive portion 42 to be equal, the first refractive portion 41 and the second refractive portion 42 can be provided in the same film layer, thus making it easier to provide the first refractive portion 41 and the second refractive portion 42.

[0085] In one possible implementation, please refer to Figure 7The ratio a / b of the width 'a' of the orthographic projection of the shielding strip 51 onto the array substrate 2 and the width 'b' of the orthographic projection of the first light-emitting sub-pixel 31 or the second light-emitting sub-pixel 32 onto the array substrate 2 is 0.05-1.5. This width ratio a / b can affect the angular range of the target object 11 seen from the side of the display panel 1. Specifically, the smaller the width ratio a / b, the smaller the angular range of the target object 11 seen from the side of the display panel 1; the larger the width ratio a / b, the larger the angular range of the target object 11 seen from the side of the display panel 1. Therefore, by reasonably setting this width ratio a / b, different angular ranges of the target object 11 seen from the side of the display panel 1 can be adjusted according to the user's actual requirements.

[0086] Preferably, please see again. Figure 7 The ratio a / b of the width 'a' of the orthographic projection of the shielding strip 51 onto the array substrate 2 and the width 'b' of the orthographic projection of the first light-emitting sub-pixel 31 or the second light-emitting sub-pixel 32 onto the array substrate 2 is 1-1.5. When this width ratio a / b is 1-1.5, within a certain angle range when viewed from the side of the display panel 1, the brightness difference between the target object 11 portion and the non-target object portion of the display panel 1 is not significant, yet the target object 11 is still visible. Thus, the target object 11 affects the clarity of the non-target object 11 portion of the display panel 1, thereby providing a privacy protection effect for the display panel 1 within a certain angle range when viewed from the side.

[0087] In one possible implementation, please refer again. Figure 7 The minimum distance c between the orthographic projection of the edge of the shielding strip 51 onto the array substrate 2 and the orthographic projection of the edge of the first light-emitting sub-pixel 31 and / or the edge of the second light-emitting sub-pixel 32 onto the array substrate 2 ranges from 0 to 12 μm. For example, the minimum distance c can be 0 μm, 1 μm, 3 μm, 6 μm, 10 μm, 11 μm, or 12 μm. This minimum distance c affects the initial angle at which the target object 11 can be seen from the side of the display panel 1. Specifically, the smaller the minimum distance c, the smaller the initial angle at which the target object 11 can be seen from the side of the display panel 1; the larger the minimum distance c, the larger the initial angle at which the target object 11 can be seen from the side of the display panel 1. Therefore, by reasonably setting the range of this minimum distance c, the initial angle at which the target object 11 can be seen from the side of the display panel 1 can be adjusted according to the user's actual needs.

[0088] Preferably, the minimum distance between the orthographic projection of the edge of the shielding strip 51 on the array substrate 2 and the orthographic projection of the edge of the first light-emitting sub-pixel 31 on the array substrate 2 is equal to the minimum distance between the orthographic projection of the edge of the shielding strip 51 on the array substrate 2 and the orthographic projection of the edge of the second light-emitting sub-pixel 32 on the array substrate 2. In this way, the light emission from the display panel 1 at the front viewing angle is more uniform, thereby improving the display effect of the display panel 1 at the front viewing angle.

[0089] It is worth noting that the angles mentioned in this application refer to the angle between the emitted light from the display panel 1 and the normal.

[0090] Based on the above scheme, in some embodiments, the ratio a / b of the width a of the orthogonal projection of the shielding strip 51 on the array substrate 2 and the width b of the orthogonal projection of the first light-emitting sub-pixel 31 on the array substrate 2 is 0.2, the minimum distance c between the orthogonal projection of the edge of the shielding strip 51 on the array substrate 2 and the orthogonal projection of the edge of the first light-emitting sub-pixel 31 on the array substrate 2 is 6μm, the thickness D of the refractive layer 4 is 10μm, the refractive index of the first refractive part 41 is 1.6, and the refractive index of the second refractive part 42 is 1.5.

[0091] Please see Figure 8 , Figure 8 The horizontal axis represents the side-view angle of display panel 1, in degrees, and the vertical axis represents the brightness difference between the target object 11 and the non-target object portion of display panel 1. The initial highlight angle of target object 11 is 36°, meaning that when the side-view angle of display panel 1 is 36°, target object 11 is already highlighted, but the user cannot see target object 11 from this viewing angle. For this viewing angle, please refer to [link / reference needed]. Figure 9 The light emitted by the first light-emitting pixel 31 after passing through the first refractive part 41 is partially blocked; please refer to [link to relevant documentation]. Figure 10 The light emitted by the second light-emitting pixel 32 after passing through the second refractive part 42 is partially blocked.

[0092] When the side viewing angle of the display panel 1 is 43°, the brightness difference between the target object 11 and the non-target object is greater than 2%, and the user can see the target object 11 set in the display panel 1 from this viewing angle.

[0093] When the viewing angle of display panel 1 is 68°, the brightness difference between the target object 11 and the non-target object displayed on display panel 1 is the largest, reaching 4.6%. Please refer to [link / reference needed] for this viewing angle. Figure 11 The light emitted by the first light-emitting pixel 31 after passing through the first refractive part 41 is partially and continuously blocked; please refer to Figure 12 The partial blocking of light emitted by the second light-emitting pixel 32 after passing through the second refractive part 42 ends, and complete blocking begins.

[0094] When the side viewing angle of the display panel 1 is 74°, the brightness difference between the target object 11 and the non-target object part of the display panel 1 is less than 2%. The user can no longer see the target object 11 set in the display panel 1, but the target object 11 has not disappeared from the display panel 1.

[0095] When the side viewing angle of display panel 1 is 78°, the target object 11 becomes prominent and disappears. For this viewing angle, please refer to [link / reference needed]. Figure 13 The partial blocking of light emitted by the first light-emitting pixel 31 after passing through the first refractive part 41 ends, and complete blocking begins; please refer to Figure 14 The light emitted by the second light-emitting pixel 32 after passing through the second refractive part 42 is completely blocked for a continuous period of time.

[0096] In other embodiments, the ratio a / b of the width a of the orthogonal projection of the shielding strip 51 on the array substrate 2 to the width b of the orthogonal projection of the first light-emitting sub-pixel 31 on the array substrate 2 is 1, the minimum distance c between the orthogonal projection of the edge of the shielding strip 51 on the array substrate 2 and the orthogonal projection of the edge of the first light-emitting sub-pixel 31 on the array substrate 2 is 0 μm, the thickness D of the refractive layer 4 is 18 μm, the refractive index of the first refractive part 41 is 1.7, and the refractive index of the second refractive part 42 is 1.4.

[0097] Please see Figure 15 , Figure 15 The horizontal axis represents the side-view angle of display panel 1, in degrees, and the vertical axis represents the brightness difference between the target object 11 and non-target objects on display panel 1. The initial prominence angle of the target object 11 is 0°, meaning that when the side-view angle of display panel 1 is 0°, the target object 11 is already prominent, but the user cannot see the target object 11 from this viewing angle. For this viewing angle, please refer to [link / reference needed]. Figure 16 The light emitted by the first light-emitting sub-pixel 31 after passing through the first refractive part 41 is partially blocked; please refer to Figure 17 The light emitted by the second light-emitting pixel 32 after passing through the second refractive part 42 is partially blocked.

[0098] When the side viewing angle of the display panel 1 is 9°, the brightness difference between the target object 11 and the non-target object is greater than 2%, and the user can see the target object 11 set in the display panel 1 from this viewing angle.

[0099] When the side viewing angle of the display panel 1 is 64°, the brightness difference between the target object 11 and the non-target object displayed on the display panel 1 reaches more than 100%.

[0100] When the side viewing angle of display panel 1 is 90°, the brightness difference between the target object 11 and the non-target object displayed on display panel 1 is the greatest, and the brightness difference can increase to 15 times. Please refer to [link / reference needed] for this viewing angle. Figure 18The light emitted by the first light-emitting pixel 31 after passing through the first refractive part 41 is partially blocked relatively slowly; please refer to Figure 19 The light emitted by the second light-emitting pixel 32 after passing through the second refractive part 42 is partially blocked relatively quickly.

[0101] In summary, this application, by setting the refractive layer 4 as a first refractive part 41 and a second refractive part 42 with different refractive indices, and by setting a shielding strip 51 at the position of the first refractive part 41 and / or the second refractive part 42, allows the target object 11 placed on the display panel 1 to be visible from the side while ensuring normal light output and display at the front viewing angle, thereby reducing the impact on the normal use of the display panel 1. Therefore, this display panel 1 can achieve the effect of not affecting normal use while promoting the screen manufacturing company, etc., and can also set personalized target objects 11 for other customers, thereby adding new product competitiveness to the display panel 1 and becoming a personalized trend.

[0102] In one possible implementation, please refer to Figure 20 This application also provides a method for manufacturing a display panel 1, the method comprising:

[0103] S10: Provide an array substrate 2.

[0104] The array substrate 2 includes a back plate and an electrode located on one side of the back plate. The back plate may include multiple metal traces and / or multiple driving units for transmitting signals or electrical energy. The metal traces and / or driving units are electrically connected to the electrodes. The electrodes are electrically connected to the light-emitting layer 3. The metal traces and driving units can be used to drive the light-emitting layer 3 to emit light.

[0105] S11: A light-emitting layer 3 is formed on one side of the array substrate 2; the light-emitting layer 3 includes at least one first light-emitting sub-pixel 31 and at least one second light-emitting sub-pixel 32.

[0106] The light-emitting layer 3 emits light under the voltage difference control of the voltage generated by the anode and cathode of the display panel 1. The first light-emitting sub-pixel 31 can emit light of the same color or light of different colors.

[0107] S12: A refractive layer 4 is formed on the side of the light-emitting layer 3 away from the array substrate 2; the refractive layer 4 includes a first refractive portion 41 and a second refractive portion 42, the orthographic projection of the first refractive portion 41 on the array substrate 2 at least partially coincides with the orthographic projection of the first light-emitting sub-pixel 31 on the array substrate 2; the orthographic projection of the second refractive portion 42 on the array substrate 2 at least partially coincides with the orthographic projection of the second light-emitting sub-pixel 32 on the array substrate 2; the refractive indices of the first refractive portion 41 and the second refractive portion 42 are different.

[0108] The first refractive part 41 is a target object 11 disposed in the display panel 1. The refractive index of the first refractive part 41 is greater than the refractive index of the second refractive part 42, or the refractive index of the first refractive part 41 is less than the refractive index of the second refractive part 42.

[0109] S13: A shielding layer 5 is formed on the side of the refractive layer 4 away from the array substrate 2; the shielding layer 5 includes at least one shielding strip 51, the orthographic projection of the shielding strip 51 on the array substrate 2 at least partially surrounds the orthographic projection of at least one of the first light-emitting sub-pixel 31 and the second light-emitting sub-pixel 32 on the array substrate 2.

[0110] Since the blocking strip 51 at least partially surrounds the first light-emitting sub-pixel 31 and / or the second light-emitting sub-pixel 32, and the blocking strip 51 is not positioned in the frontal viewing direction of the first light-emitting sub-pixel 31 or the second light-emitting sub-pixel 32, and the blocking strip 51 has a light-blocking function, the amount of light emitted from the first light-emitting sub-pixel 31 after passing through the first refraction part 41 and the amount of light emitted from the second light-emitting sub-pixel 32 after passing through the second refraction part 42 are substantially equivalent in the frontal viewing direction of the display panel 1. The brightness difference between the light passing through the first refraction part 41 and the second refraction part 42 is relatively small; a brightness difference greater than 2% is required to distinguish the target object 11 positioned in the display panel 1. Therefore, please refer to... Figure 3 In this embodiment, the target object 11 set in the display panel 1 cannot be seen when the user looks directly at the display panel 1, so it does not affect the normal use of the display panel 1 when the user looks directly at it.

[0111] In this embodiment, the refractive layer 4 is configured as a first refractive part 41 and a second refractive part 42 with different refractive indices by means of the above method, and a shielding strip 51 is provided at the position of the first refractive part 41 and / or the second refractive part 42. While ensuring normal display of light output from the front viewing angle, the target object 11 set in the display panel 1 can be seen from the side, thereby reducing the impact on the normal use of the display panel 1.

[0112] Preferably, in one embodiment, please refer to Figure 21 The step of forming a refractive layer 4 on the side of the light-emitting layer 3 away from the array substrate 2 includes:

[0113] S121: A first inorganic encapsulation layer 6, an organic encapsulation layer 7, and a second inorganic encapsulation layer 8 are sequentially formed on the side of the light-emitting layer 3 away from the array substrate 2; the refractive layer 4 includes the organic encapsulation layer 7.

[0114] The organic encapsulation layer 7 can be prepared using IJP (Ink Jet Printing) technology. The first inorganic encapsulation layer 6 and the second inorganic encapsulation layer 8 can be prepared using CVD (Chemical Vapor Deposition) or ALD (Atomic Layer Deposition).

[0115] S122: During the curing stage of the organic encapsulation layer 7, the organic encapsulation layer 7 is treated by heating or ultraviolet light to make the refractive index of the first refractive part 41 different from that of the second refractive part 42.

[0116] During the curing stage of the inkjet-printed organic encapsulation layer 7, a mechanically automated precision heating device or ultraviolet irradiation device is used to heat or irradiate the first refractive portion 41, causing a significant difference in refractive index between the first refractive portion 41 and its surroundings. This method can meet the personalized design needs of customers, such as displaying different text and different images (customer's personal photos or beautiful landscapes). In other embodiments, during the curing stage of the organic encapsulation layer 7, a patterned mask can be provided on the side of the organic encapsulation layer 7 away from the array substrate 2. The patterned mask allows different areas to be heated or irradiated at different degrees, thereby causing different refractive indices in different areas.

[0117] The step of forming a shielding layer 5 on the side of the refractive layer 4 away from the array substrate 2 includes:

[0118] S131: A shielding layer 5 is formed on the side of the second inorganic encapsulation layer 8 away from the array substrate 2.

[0119] In this embodiment, by heating or irradiating the part of the organic encapsulation layer 7 where the target object 11 needs to be set (the first refractive part 41), the target object 11 can be set in the display panel 1 according to different user needs, and the refractive index of the target object 11 part is different from the refractive index of the rest of the display panel 1.

[0120] Alternatively, please see Figure 22 The step of forming a refractive layer 4 on the side of the light-emitting layer 3 away from the array substrate 2 includes:

[0121] S121: A first inorganic encapsulation layer 6, an organic encapsulation layer 7, and a second inorganic encapsulation layer 8 are sequentially formed on the side of the light-emitting layer 3 away from the array substrate 2; the refractive layer 4 includes the organic encapsulation layer 7.

[0122] S123: During the curing stage of the organic encapsulation layer 7, a heating plate or a cooling plate is provided on the side of the organic encapsulation layer 7 away from the array substrate 2 so that the refractive index of the first refractive part 41 formed is different from the refractive index of the second refractive part 42.

[0123] Normally, heating the organic encapsulation layer 7 increases the refractive index of the heated portion, while cooling the organic encapsulation layer 7 decreases the refractive index of the cooled portion.

[0124] The step of forming a shielding layer 5 on the side of the refractive layer 4 away from the array substrate 2 includes:

[0125] S131: A shielding layer 5 is formed on the side of the second inorganic encapsulation layer 8 away from the array substrate 2.

[0126] In this embodiment, during the curing stage of the inkjet-printed organic encapsulation layer 7, a patterned heating plate or cooling plate (the heating plate or cooling plate has the same shape as the target object 11 to be placed on the display panel 1) is used, and then the second inorganic encapsulation layer 8 is prepared, so that the refractive index value at the target object 11 position on the display panel 1 is significantly different from the surrounding area. Thus, the method of setting the target object 11 in the display panel 1 using a heating plate or cooling plate is more efficient and relatively more economical.

[0127] In one possible implementation, this application also provides an electronic device, which includes the display panel 1 described in this application or a display panel 1 prepared by the method described in this application. The electronic device may include a device with image processing capabilities, such as a server, personal computer, laptop computer, etc. Since the electronic device includes the display panel 1 described in this application, after a target object 11 is placed in the electronic device, the target object 11 can be seen from the side while ensuring normal display at the front viewing angle, without affecting the normal use of the electronic device when viewed directly.

[0128] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0129] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A display panel, characterized in that, The display panel includes: Array substrate; A light-emitting layer located on one side of the array substrate; the light-emitting layer includes at least one first light-emitting sub-pixel and at least one second light-emitting sub-pixel; A refractive layer located on the side of the light-emitting layer away from the array substrate; the refractive layer includes a first refractive portion and a second refractive portion, wherein the orthographic projection of the first refractive portion on the array substrate at least partially coincides with the orthographic projection of the first light-emitting sub-pixel on the array substrate; the orthographic projection of the second refractive portion on the array substrate at least partially coincides with the orthographic projection of the second light-emitting sub-pixel on the array substrate; the refractive indices of the first refractive portion and the second refractive portion are different. A shielding layer located on the side of the refractive layer away from the array substrate; the shielding layer includes at least one shielding strip, the orthographic projection of the shielding strip on the array substrate at least partially surrounding the orthographic projection of at least one of the first light-emitting sub-pixel and the second light-emitting sub-pixel on the array substrate; the absolute value of the difference between the refractive index of the first refractive portion and the refractive index of the second refractive portion is in the range of 0.05-0.3, the ratio of the width of the orthographic projection of the shielding strip on the array substrate to the width of the orthographic projection of the first light-emitting sub-pixel or the second light-emitting sub-pixel on the array substrate is 0.05-1.5, and the brightness difference between the target object and the non-target object of the display panel is greater than 2%, so that the target object is visible when the display panel is viewed from the side.

2. The display panel according to claim 1, characterized in that, The refractive index of the refractive layer is in the range of 1.4-1.

7.

3. The display panel according to claim 1, characterized in that, Along a direction perpendicular to the array substrate, the thickness of the first refractive portion is equal to the thickness of the second refractive portion.

4. The display panel according to claim 1, characterized in that, Along a direction perpendicular to the array substrate, the thickness of the refractive layer ranges from 5 μm to 20 μm.

5. The display panel according to claim 1, characterized in that, The ratio of the width of the obscuring strip's orthogonal projection on the array substrate to the width of the orthogonal projection of the first or second light-emitting sub-pixel on the array substrate is 1-1.

5.

6. The display panel according to claim 1, characterized in that, The refractive layer includes an organic encapsulation layer.

7. The display panel according to claim 6, characterized in that, The display panel further includes a first inorganic encapsulation layer located on the side of the organic encapsulation layer closer to the array substrate and a second inorganic encapsulation layer located on the side of the organic encapsulation layer away from the array substrate.

8. The display panel according to claim 1, characterized in that, The shielding strip includes touch electrode traces.

9. The display panel according to claim 1, characterized in that, The occlusion layer includes a black matrix layer; multiple occlusion strips are provided, and the multiple occlusion strips interweave to form the black matrix layer.

10. The display panel according to claim 1, characterized in that, The minimum distance between the orthographic projection of the edge of the shielding strip on the array substrate and the orthographic projection of the edge of the first light-emitting sub-pixel on the array substrate is equal to the minimum distance between the orthographic projection of the edge of the shielding strip on the array substrate and the orthographic projection of the edge of the second light-emitting sub-pixel on the array substrate.

11. The display panel according to claim 10, characterized in that, The minimum distance between the orthographic projection of the edge of the shielding strip on the array substrate and the orthographic projection of the edge of the first light-emitting sub-pixel and / or the edge of the second light-emitting sub-pixel on the array substrate is 0-12 μm.

12. A method for manufacturing a display panel, characterized in that, The method includes: Provide an array substrate; A light-emitting layer is formed on one side of the array substrate; the light-emitting layer includes at least one first light-emitting sub-pixel and at least one second light-emitting sub-pixel; A refractive layer is formed on the side of the light-emitting layer away from the array substrate; the refractive layer includes a first refractive portion and a second refractive portion, wherein the orthographic projection of the first refractive portion on the array substrate at least partially coincides with the orthographic projection of the first light-emitting sub-pixel on the array substrate; the orthographic projection of the second refractive portion on the array substrate at least partially coincides with the orthographic projection of the second light-emitting sub-pixel on the array substrate; the refractive indices of the first refractive portion and the second refractive portion are different; A shielding layer is formed on the side of the refractive layer away from the array substrate; the shielding layer includes at least one shielding strip, the orthographic projection of the shielding strip on the array substrate at least partially surrounds the orthographic projection of at least one of the first light-emitting sub-pixel and the second light-emitting sub-pixel on the array substrate; the absolute value of the difference between the refractive index of the first refractive portion and the refractive index of the second refractive portion is in the range of 0.05-0.3, the ratio of the width of the orthographic projection of the shielding strip on the array substrate to the width of the orthographic projection of the first light-emitting sub-pixel or the second light-emitting sub-pixel on the array substrate is 0.05-1.5, and the brightness difference between the target object and the non-target object of the display panel is greater than 2%, so that the target object is visible when the display panel is viewed from the side.

13. The method for manufacturing a display panel according to claim 12, characterized in that, The step of forming a refractive layer on the side of the light-emitting layer away from the array substrate includes: A first inorganic encapsulation layer, an organic encapsulation layer, and a second inorganic encapsulation layer are sequentially formed on the side of the light-emitting layer away from the array substrate; the refractive layer includes an organic encapsulation layer; During the organic encapsulation layer curing stage, the organic encapsulation layer is treated by heating or ultraviolet light to make the refractive index of the first refractive part different from that of the second refractive part. Alternatively, the step of forming a refractive layer on the side of the light-emitting layer away from the array substrate includes: A first inorganic encapsulation layer, an organic encapsulation layer, and a second inorganic encapsulation layer are sequentially formed on the side of the light-emitting layer away from the array substrate; the refractive layer includes an organic encapsulation layer; During the organic encapsulation layer curing stage, a heating plate or a cooling plate is provided on the side of the organic encapsulation layer away from the array substrate so that the refractive index of the first refractive part is different from that of the second refractive part.

14. An electronic device, characterized in that, This includes the display panel as described in any one of claims 1-11 or the display panel prepared by the method for preparing the display panel as described in claim 12 or 13.

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