Display panel and display device

Abstract

According to the display panel and the display device, the display panel comprises a first shading part and a second shading part which are located on the side, away from a pixel layer, of a packaging layer, and the first shading part is not overlapped with a first type of sub-pixels and is close to the first side of the first type of sub-pixels; the second shading part is not overlapped with the first type of sub-pixels and is close to the second side of the first type of sub-pixels. According to the display panel, the emergent angle a of emergent light which can be shielded by the first shading part is set to be larger than or equal to theta1 and smaller than or equal to theta2, and the emergent angle a of emergent light which can be shielded by the second shading part is set to be larger than or equal to theta3 and smaller than or equal to theta4, so that the brightness of small-angle light which is emitted towards the first side and the second side of the display panel is symmetrical; and the brightness of the light rays in the wide-angle range emitted by the first type of sub-pixels is still kept in a normal attenuation ratio, so that the display uniformity and the peep-proof performance of the display panel are improved, the risk of a'dark and light screen phenomenon 'is reduced, and the visual effect of watching the display panel is improved.

Description

Technical Field

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

[0002] In display panel applications, there are situations where display panels need to be used to prevent privacy concerns, such as in automotive displays. The display panel on the passenger side can be observed by the passenger, but for driving safety reasons, the light intensity reaching the driver's eyes from the passenger-side display panel can be reduced while the car is in motion, thus preventing the passenger-side display from affecting the driver's vision. To achieve privacy for the driver, a device is usually added to the display panel to reduce the light intensity on the side facing the driver, i.e., single-sided privacy. In this case, the light from the display panel towards the driver is weaker, but the light intensity towards the passenger side is relatively normal. However, research has found that in this case, the display panel provides inconsistent light intensity to the passenger in several areas. Generally, the area closer to the driver is darker, while the middle and passenger-side areas are brighter, resulting in a poor viewing experience for the passenger. Summary of the Invention

[0003] In view of this, this application provides a display panel and a display device to help solve the above problems.

[0004] This application provides a display panel, the display panel comprising: The pixel layer includes multiple sub-pixels, among which a first type of sub-pixels are included. The first type of sub-pixels includes a first side and a second side opposite to each other in a first direction; the first direction is parallel to the plane where the display panel is located. The encapsulation layer is located on the side of the pixel layer furthest from the substrate; The first light-shielding part is located on the side of the encapsulation layer away from the pixel layer; in the direction perpendicular to the plane where the display panel is located, the first light-shielding part does not overlap with the first type of sub-pixel and is close to the first side of the first type of sub-pixel; The second light-shielding part is located on the side of the encapsulation layer away from the pixel layer; in the direction perpendicular to the plane where the display panel is located, the second light-shielding part does not overlap with the first type of sub-pixel and is close to the second side of the first type of sub-pixel; Wherein, the emission angle of the emitted light from the first type of sub-pixel is α; the emission angle α of the emitted light that can be blocked by the first light-blocking part is in the range of θ1≤a≤θ2; the emission angle α of the emitted light that can be blocked by the second light-blocking part is in the range of θ3≤a≤θ4. θ1≤θ3<θ2, and θ4<θ2.

[0005] Secondly, embodiments of this application provide a display device, including a display panel as provided in the first aspect.

[0006] In this embodiment, the first type of sub-pixel in the display panel that requires privacy protection is protected on both sides, that is, a first light-blocking part and a second light-blocking part are provided. The range of the emission angle of the first type of sub-pixel that the second light-blocking part can block can be adjusted according to the viewing effect when the passenger views the display panel. This makes the brightness of the small-angle light emitted from the display panel toward the first side and toward the second side symmetrical, and ensures that the brightness of the large-angle light emitted from the first type of sub-pixel still maintains a normal attenuation ratio. This improves the display uniformity and privacy protection performance of the display panel, improves the brightness consistency of the screen when the passenger views the display panel, reduces the risk of "yin-yang screen phenomenon", and improves the viewing effect of the display panel. Attached Figure Description

[0007] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0008] Figure 1 This is a schematic diagram of the structure of a display panel provided in an embodiment of this application; Figure 2 This application provides a schematic diagram of a display panel application in a related technology. Figure 3 A method provided for this application Figure 2 A schematic diagram of the viewing angle brightness distribution curve of the display panel shown; Figure 4 A schematic diagram of the structure of another display panel provided in this application; Figure 5 A plan view of a display panel in a related art provided in this application embodiment; Figure 6 A schematic diagram of the structure of another display panel provided in this application; Figure 7 A schematic diagram of the structure of another display panel provided in this application; Figure 8 A schematic diagram of the structure of another display panel provided in this application; Figure 9 A schematic diagram of the structure of another display panel provided in this application; Figure 10 A schematic diagram of the structure of another display panel provided in this application; Figure 11 A schematic diagram of the structure of another display panel provided in this application; Figure 12 A schematic diagram of the structure of another display panel provided in this application; Figure 13 A schematic diagram of the structure of another display panel provided in this application; Figure 14 A schematic diagram of the structure of another display panel provided in this application; Figure 15 A schematic diagram of the structure of another display panel provided in this application; Figure 16 A schematic diagram of the structure of another display panel provided in this application; Figure 17 This application provides a schematic diagram of the structure of another display panel. Figure 18 A partial plan view of a display panel provided in this application; Figure 19 A planar schematic diagram of a first type of sub-pixel in a related art provided in this application; Figure 20 This application provides a schematic diagram of the structure of another display panel. Figure 21 A partial plan view of another display panel provided in this application; Figure 22 This application provides a schematic diagram of the structure of another display panel. Figure 23 A schematic diagram of the structure of another display panel provided in this application; Figure 24 This application provides a schematic diagram of the structure of another display panel. Figure 25 A schematic diagram of the working mode of a display panel provided in this application; Figure 26 A partial plan view of another display panel provided in this application; Figure 27 A partial plan view of another display panel provided in this application; Figure 28 A partial plan view of another display panel provided in this application; Figure 29 This is a plan view of a display device provided in this application. Detailed Implementation

[0009] To better understand the technical solution of this application, the embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0010] It should be understood that the described embodiments are merely some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort, including new embodiments obtained by combining the various embodiments mentioned in this application without technical conflict, are within the scope of protection of this application.

[0011] The terminology used in the embodiments of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. The singular forms “a,” “this,” and “the” used in the embodiments of this application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise.

[0012] It should be understood that the term "and / or" used in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0013] In the description of this specification, it should be understood that the terms "substantially", "approximately", "about", "about", "generally", "largely" used in the claims and embodiments of this application refer to values ​​that can be generally agreed upon within a reasonable range of process operations or tolerances, rather than a precise value.

[0014] It should be understood that although terms such as "first," "second," etc., may be used to describe directions, pixels, light-shielding parts, etc., in the embodiments of this application, these should not be limited to these terms. These terms are only used to distinguish directions, pixels, light-shielding parts, etc., from each other. For example, without departing from the scope of the embodiments of this application, a first direction may also be referred to as a second direction, and similarly, a second direction may also be referred to as a first direction. Through meticulous and in-depth research, the applicant of this application has provided a solution to the problems existing in the prior art.

[0015] Figure 1 This is a schematic diagram of the structure of a display panel provided in an embodiment of this application. Figure 2 This application provides a schematic diagram of a display panel application in a related technology. Figure 3 A method provided for this application Figure 2 The diagram shows the viewing angle brightness distribution curve of the display panel. Figure 4 This is a schematic diagram of the structure of another display panel provided in this application.

[0016] This application provides a display panel 100, such as Figure 1As shown, the display panel 100 includes a pixel layer 10, which includes a plurality of sub-pixels 101. Among the sub-pixels 101, there is a first type of sub-pixel 101A. The first type of sub-pixel 101A includes a first side C1 and a second side C2 opposite to each other in a first direction X1. The first direction X1 is parallel to the plane of the display panel 100, and the first side C1 and the second side C2 are two opposite edges of the first type of sub-pixel 101A in the first direction X1. It should be noted that the sub-pixel 101 includes a plurality of functional film layers, including a light-emitting layer for emitting light, an anode layer for providing holes to the light-emitting layer, and a cathode layer for providing electrons to the light-emitting layer. Optionally, the edge position of the first type of sub-pixel 101A can be specified to the edge position of a certain film layer, such as: taking the edge position of the light-emitting layer as a reference, defining the first side C1 and the second side C2 of the first type of sub-pixel 101A in the first direction X1; such as: taking the edge position of the anode layer as a reference, defining the first side C1 and the second side C2 of the first type of sub-pixel 101A in the first direction X1.

[0017] The display panel 100 also includes an encapsulation layer 20, which is located on the side of the pixel layer 10 away from the substrate 30. The encapsulation layer 20 can be used to protect the sub-pixels 101 in the pixel layer 10 from damage such as water and oxygen erosion.

[0018] As can be seen from the background technology, there are cases in related technologies where privacy protection is implemented on one side of sub-pixels in a display panel. For example... Figure 2 As shown, the example given is a display panel 100' used in the automotive field. Figure 2 It includes two perspectives: driver's seat 1 and passenger's seat 2. Figure 2 The arrows "View" pointing from the driver's seat 1 and the passenger's seat 2 to the display panel 100' are shown as a line of sight. For the display panel 100' installed from the passenger's seat 2's direct view, the market requires weakening the light emitted from the display panel 100' towards the driver's seat 1. Therefore, devices such as shielding structures are typically provided on the side of the sub-pixels 101' facing the driver's seat 1 to reduce the light intensity. This weakens the brightness of the display panel 100' viewed from the driver's seat 1, reducing the impact of the display panel 100' on the driver's seat 1's driving experience. Therefore, in related technologies, unilateral privacy protection on the sub-pixels 101' is sufficient to achieve the privacy purpose.

[0019] However, research has found that from the perspective of passenger seat 2, the viewing angle is approximately between -15° and 15°, which roughly covers the entire display panel 100'. Of course, this range is an illustrative example based on experience; in practical applications, the viewing angle of passenger seat 2 towards the display panel 100' can be appropriately widened or narrowed. Combined with... Figure 3 Let's take a look. Figure 3 The vertical axis represents luminance, and the horizontal axis represents the viewing angle (Angle) of the display panel at 100'. Figure 3 The curve in the first quadrant represents the brightness from the viewing angle of the display panel 100', which is closer to the passenger seat 2. The curve in the second quadrant represents the brightness from the viewing angle of the display panel 100', which is closer to the driver seat 1. From the light emission of the display panel 100', almost all light rays perpendicular to the plane of the display panel 100' are emitted, resulting in high brightness at a normal viewing angle. However, the intensity of the light emitted from the display panel 100' towards the driver seat 1 shows a significant attenuation, while the intensity of the light emitted from the display panel 100' towards the passenger seat 1 maintains a relatively normal attenuation. Figure 3 It is clearly visible that the light emitted from the display panel 100' with the single-sided privacy setting has the highest intensity near 0°. The light intensity at smaller angles (e.g., -5° to -20°) towards the driver's seat 1 is significantly lower than that at smaller angles (e.g., 5° to 20°) towards the passenger seat 2. Therefore, continuing to combine... Figure 2 As shown, for the passenger seat 2, with a viewing angle range of approximately (-15°) to 15°, when the passenger seat 2 views the display panel 100', the area of ​​the display panel 100' closest to the driver's seat 1 is the darkest, the central area of ​​the display panel 100' is the brightest, and the area of ​​the display panel 100' closest to the passenger seat 2 has a moderate brightness. This results in a significant difference in brightness between different areas of the display panel 100' viewed from the passenger seat 2, also known as the "yin-yang screen phenomenon." This negatively impacts the visual experience for the user primarily viewing the display panel from the passenger seat position, thus hindering the overall user experience of the display panel 100'.

[0020] Therefore, to address the aforementioned problems discovered in the research, this application proposes to further include a first light-shielding portion 40 and a second light-shielding portion 50 in the display panel 100. Combined with... Figure 1 , Figure 4As shown, the first light-shielding part 40 is located on the side of the encapsulation layer 20 away from the pixel layer 10. In the direction perpendicular to the plane of the display panel 100, the first light-shielding part 40 does not overlap with the first type of sub-pixel 101A and is close to the first side C1 of the first type of sub-pixel 101A. The second light-shielding part 50 is located on the side of the encapsulation layer 20 away from the pixel layer 10. In the direction perpendicular to the plane of the display panel 100, the second light-shielding part 50 does not overlap with the first type of sub-pixel 101A and is close to the second side C2 of the first type of sub-pixel 101A. Therefore, it can be concluded that both the first light-shielding part 40 and the second light-shielding part 50 are devices that do not affect the light-emitting area of ​​the first type of sub-pixel 101A, which is beneficial to ensuring the normal brightness of the light emitted from the first type of sub-pixel 101A at the front viewing angle.

[0021] It should be noted that, based on the above, sub-pixel 101 includes multiple functional film layers, among which the light-emitting layer included in sub-pixel 101 is a film layer directly related to the display of light. For example, the edge position of the first type of sub-pixel 101A is defined by the edge position of the light-emitting layer, defining the first side C1 and the second side C2 of the first type of sub-pixel 101A opposite each other in the first direction X1. The first side C1 of the first type of sub-pixel 101A can be specifically considered as the boundary position of the light-emitting layer of the first type of sub-pixel 101A. The first light-blocking portion 40 not overlapping with the first type of sub-pixel 101A and being close to the first side C1 of the first type of sub-pixel 101A can be considered as the first light-blocking portion 40 at least not overlapping with the light-emitting layer of the first type of sub-pixel 101A and being close to the first side C1 of the light-emitting layer of the first type of sub-pixel 101A. Furthermore, when the first light-shielding portion 40 is close to the first side C1 of the first type of sub-pixel 101A, in a direction parallel to the plane where the display panel 100 is located, the distance between the first light-shielding portion 40 and the first side C1 of the light-emitting layer among the multiple film layers of the first type of sub-pixel 101A is ≥0. Similarly, the second side C2 of the first type of sub-pixel 101A can be specifically considered as the other boundary position of the light-emitting layer of the first type of sub-pixel 101A. The second light-shielding portion 50 not overlapping with the first type of sub-pixel 101A and close to the second side C2 of the first type of sub-pixel 101A can be considered as the second light-shielding portion 50 not overlapping with the light-emitting layer of the first type of sub-pixel 101A and close to the second side C2 of the light-emitting layer of the first type of sub-pixel 101A. Furthermore, when the second light-shielding portion 50 is close to the second side C2 of the first type of sub-pixel 101A, in a direction parallel to the plane where the display panel 100 is located, the distance between the second light-shielding portion 50 and the second side C2 of the light-emitting layer in the plurality of film layers of the first type of sub-pixel 101A is ≥0.

[0022] In this embodiment, the application of the display panel 100 in the automotive display field will continue to be described. For example, the display panel 100 is mounted near the passenger seat 2. The first side C1 of the aforementioned first type sub-pixel 101A is the side near the driver's seat 1, and the second side C2 of the first type sub-pixel 101A is the side near the passenger seat 2. It is understood that light-shielding portions are provided at both the first side C1 and the second side C2 of the first type sub-pixel 101A.

[0023] Further, refer to Figure 4 As shown, the emission angle of the emitted light from the first type of sub-pixel 101A is α. The emission angle α of the emitted light that can be blocked by the first light-blocking part 40 is in the range of θ1≤a≤θ2, and the emission angle α of the emitted light that can be blocked by the second light-blocking part 50 is in the range of θ3≤a≤θ4. Furthermore, θ1≤θ3<θ2, and θ4<θ2, so the light-blocking range of the first light-blocking part 40 is relatively large, which is beneficial to achieving the privacy protection effect of the display panel 100 for the driver's seat 1 when displaying. This is in conjunction with the related technologies proposed... Figure 3 As can be seen, the first type of sub-pixel 101A has strong brightness at a direct viewing angle and at a small angle towards the second side C1, while the intensity of the light emitted by the first type of sub-pixel 101A at a small angle towards the first side C1 is significantly attenuated. This is the main reason for the "yin-yang screen" phenomenon observed when viewing the display panel 100' from the passenger seat 2. Therefore, we adaptively blocked the small-angle light emitted by the first type of sub-pixel 101A towards the second side C2, so that the second light-blocking part 50 can block light within the range of θ3≤a≤θ4.

[0024] Figure 5 This is a plan view of a display panel in a related art provided in an embodiment of this application.

[0025] In one embodiment of this application, θ1 = 0°, and 45° ≤ θ2 ≤ 60°. Exemplarily, this allows the range of light blocked by the first light-shielding part 40 to be within the range of 0° ≤ θ ≤ 60°. Combined with... Figures 3-5As shown, in related technologies, regarding the light emission angle of the display panel 100', the light intensity in the range of 0°-(45°) towards the driver's seat 1 is significantly attenuated. Since the viewing angle of the passenger seat 2 is approximately within ±15°, the brightness of the first area E1 of the display panel 100 seen by the passenger seat 2 is relatively dim, the brightness of the second area E2 of the display panel 100 seen by the passenger seat 2 is the highest, and the brightness of the third area E3 of the display panel 100 seen by the passenger seat 2 is at an intermediate value. Therefore, the light seen by the passenger seat 2 when viewing the third area E3 of the display panel 100 is small-angle light emitted from the first type of sub-pixel 101A, so this portion of light needs to be processed. This improves the uniformity of the light emission brightness of the display panel and enhances the visual effect for the passenger seat 2.

[0026] It should be noted that when the light-blocking angle of the first light-blocking part 40 is 0°, the first light-blocking part 40 may block the positive angle light emitted from the first side C1 near the first type of sub-pixel 101A, but the first light-blocking part 40 does not block the first type of sub-pixel 101A in the vertical direction.

[0027] In one embodiment of this application, a second light-shielding part 50 is positioned close to the second side C2 of the first type of sub-pixel 101A, such that the second light-shielding part 50 can block light emitted from the first type of sub-pixel 101A within a light emission angle range of 15° to 20°. The second light-shielding part 50 can be at a distance from the second side C2 of the first type of sub-pixel 101A, allowing light emitted from the first type of sub-pixel 101A at angles of 0° to 15° to be output normally without obstruction, thereby ensuring the brightness of the first type of sub-pixel 101A at a normal viewing angle. The second light-shielding part 50 blocks light emitted from the first type of sub-pixel 101A within a 15° to 20° emission angle range, which helps to reduce the difference in light intensity between the first type of sub-pixel 101A emitted towards the first side C1 and towards the second side C2.

[0028] Alternatively, θ3 = 0° and θ4 = 20° can be set so that the second light-shielding part 50 can block light within the range of 0° to 20°. In this case, the second light-shielding part 50 can be closer to the second side C2 of the first type of sub-pixel 101A, so that the 0° light emitted from the first type of sub-pixel 101A at the second side C2 position can be captured by the second light-shielding part 50. In this case, the second light-shielding part 50 can better block the small-angle light emitted from the first type of sub-pixel 101A towards the second side C2, which helps to further reduce the difference in light intensity between the first type of sub-pixel 101A towards the first side C1 and towards the second side C2, further reducing the risk of "yin-yang screen phenomenon" when viewing the display panel 100 from the perspective of the passenger seat 2, and improving the visual effect when the passenger seat 2 views the display panel 100.

[0029] In this embodiment, the first type of sub-pixel 101A in the display panel 100 that requires privacy protection is protected on both sides, that is, a first light-blocking part 40 and a second light-blocking part 50 are provided. The second light-blocking part 50 can adjust the range of the emission angle of the first type of sub-pixel 101A that it can block according to the viewing effect when the passenger seat 2 looks at the display panel 100. This makes the brightness of the small-angle light emitted by the display panel 100 toward the first side C1 and the second side C2 symmetrical, and makes the brightness of the large-angle light emitted by the first type of sub-pixel 101A maintain a normal attenuation ratio. This improves the display uniformity and privacy protection performance of the display panel 100, improves the brightness consistency of the screen when the passenger seat 2 looks at the display panel 100, reduces the risk of "yin-yang screen phenomenon", and improves the viewing effect of the display panel 100.

[0030] It should be noted that "passenger seat 2" here refers to the name used when display panel 100 is applied in the automotive field, and is used here for illustrative purposes. Of course, in other application scenarios, "passenger seat 2" can be replaced with any subject from which there is no need for privacy when viewing display panel 100.

[0031] In one embodiment of this application, reference continues to be made to... Figure 1 As shown, in the first direction X1, the side of the first light-shielding part 40 that is close to the first type of sub-pixel 101A that it blocks tends to align with the first side C1 of the first type of sub-pixel 101A. The side of the second light-shielding part 50 that is close to the first type of sub-pixel 101A that it blocks tends to align with the second side C2 of the first type of sub-pixel 101A. This allows the first light-shielding part 40 to block the light emitted from the first type of sub-pixel 101A towards the first side C1 as much as possible, ensuring the privacy effect of the light emitted from the first type of sub-pixel 101A and ensuring driving safety. In addition, the small-angle light emitted from the first type of sub-pixel 101A towards the second side C2 by the second light-shielding part 50 can reduce the brightness difference of the small-angle light emitted from the first type of sub-pixel 101A towards the first side C1 and the second side C2, improve the brightness uniformity of different areas of the display panel 100, and improve the visibility of the passenger seat 2 while achieving privacy protection of the display panel 100. In one embodiment of this application, reference continues to be made to... Figure 1As shown, the width of the first light-shielding part 40 in the first direction X1 is W1, and the width of the second light-shielding part 50 in the first direction X1 is W2, where W1 > W2. During car driving, the first direction X1 is the direction in which the driver's seat 1 and the passenger seat 2 are arranged, meaning that the first type of sub-pixel 101A has a privacy requirement in the first direction X1. In this embodiment, the first light-shielding part 40 is set to have a larger width in the first direction X1, which is beneficial to increasing the light-shielding range of the first light-shielding part 40. The second light-shielding part 50 is set to have a smaller width W2 in the first direction X1, which is beneficial to ensure that the second light-shielding part 50 blocks the small-angle light emitted by the first type of sub-pixel 101A in the second side C2 direction, and does not block the large-angle light emitted by the first type of sub-pixel 101A in the second side C2 direction, so that the display panel 100 has a certain display brightness.

[0032] In one embodiment of this application, reference continues to be made to... Figure 1 , Figure 4 As shown, the distance between the surface of pixel layer 10 facing the first light-shielding part 40 and the surface of the first light-shielding part 40 facing the pixel layer 10 is h1. The side of the first light-shielding part 40 closest to the first type of sub-pixel 101A in the first direction X1 is aligned with the first side C1. Furthermore, we need the light angle range blocked by the first light-shielding part 40 to be between θ1≤a≤θ2, and the maximum light emission angle that the first light-shielding part 40 can block is θ2. Therefore, on the light path emitted from the first type of sub-pixel 101A at an angle of θ2 towards the driver's seat 1, this light needs to be blocked by the first light-shielding part 40 to prevent it from escaping outside the display panel 100. At this time, the first light-shielding part 40 needs to have a certain length to block the light emitted at an angle of θ2 towards the driver's seat 1. (Continue referring to...) Figure 1 As shown, when setting the first light-shielding part 40, it can be determined according to W1=tanθ2. The preparation of h1 is beneficial to ensure that the length of the first light-shielding part 40 is sufficient to block the light emitted from the first type of sub-pixel 101A in the range of θ1≤a≤θ2, thus ensuring the light-shielding effect of the first light-shielding part 40.

[0033] Similarly, combined Figure 1 , Figure 4As shown, the distance between the surface of pixel layer 10 facing the second light-shielding part 50 and the surface of the second light-shielding part 50 facing the pixel layer 10 is h2. The side of the second light-shielding part 50 closest to the first type of sub-pixel 101A in the first direction X1 is aligned with the second side C2. Furthermore, we need the light angle range blocked by the second light-shielding part 50 to be between θ3≤a≤θ4, and the maximum light emission angle that the second light-shielding part 50 can block is θ4. Therefore, on the light path emitted from the first type of sub-pixel 101A at an angle of θ4 towards the passenger seat 2, this light needs to be blocked by the second light-shielding part 50 to prevent it from escaping outside the display panel 100. At this time, the second light-shielding part 50 needs to have a certain length to block the light emitted at an angle of θ4 towards the passenger seat 2. When setting the second light-shielding part 50, we can use W2=tanθ4. The preparation of h2 is beneficial to ensure that the length of the second light-shielding part 50 is sufficient to block the light emitted from the first type of sub-pixel 101A in the range of θ3≤a≤θ4, thus ensuring the light-shielding effect of the second light-shielding part 50.

[0034] In one embodiment of this application, W1 ≥ 15 μm and 0 < W2 ≤ 5 μm can be set to provide some reference parameters for the implementation of the technical solution of this application. This is beneficial to improving the feasibility of the technical solution of this application, and to ensuring that the first light-shielding part 40 can effectively block the light emitted by the first type of sub-pixel 101A toward the first side C1 direction; it is also beneficial to ensure that the second light-shielding part 50 can effectively block the small-angle light emitted by the first type of sub-pixel 101A toward the second side C2 direction, and to avoid the second light-shielding part 50 blocking a larger range of light and causing light waste.

[0035] Figure 6 This is a schematic diagram of the structure of another display panel provided in this application.

[0036] In one embodiment of this application, such as Figure 6 As shown, the display panel 100 also includes a privacy layer 60, which is located on the side of the encapsulation layer 20 away from the pixel layer 10. In this embodiment, both the first light-blocking portion 40 and the second light-blocking portion 50 are located within the privacy layer 60, and both the first light-blocking portion 40 and the second light-blocking portion 50 comprise a non-transparent material. Furthermore, in this embodiment, reference continues... Figure 6 As shown, the panel provided in this application has a structure that does not include the black matrix layer BM. A polarizer POL is also included on the side of the privacy shield 60 away from the substrate 30 to prevent reflection of ambient light.

[0037] In some other embodiments, the display panel 100 may be configured to include a black matrix layer BM, and a first light-shielding part 40 and a second light-shielding part 50 may be prepared in the black matrix layer BM. However, the light-shielding structure in the black matrix layer BM is not an integrally formed structure that only includes the hollow part corresponding to the sub-pixel 101 and seals all other places to block light. Instead, it includes multiple light-shielding parts with separate structures as provided in this application, so as to achieve the functions of the first light-shielding part 40 and the second light-shielding part 50 provided in this application.

[0038] Figure 7 This is a schematic diagram of the structure of another display panel provided in this application.

[0039] In one embodiment of this application, such as Figure 7 As shown, the display panel 100 also includes a touch layer 70, which is located between the privacy layer 60 and the encapsulation layer 20. The touch layer 70 can be used to fabricate a metal trace structure, and the touch layer 70 is used to receive and transmit touch signals from the display panel 100.

[0040] The display panel 100 also includes a third light-shielding part 80. The third light-shielding part 80 is located in the touch layer 70, which is beneficial to use the metal trace film layer in the touch layer 70 to prepare the third light-shielding part 80 and avoid the third light-shielding part 80 occupying other trace film layers. In this embodiment, in the plane perpendicular to the display panel 100, the third light-shielding part 80 does not overlap with the first type of sub-pixel 101A and is close to the second side of the first type of sub-pixel 101A. The third light-shielding part 80 is also used to block the light emitted by the first type of sub-pixel 101A toward the passenger seat 2. The side of the third light-shielding part 80 near the first type of sub-pixel 101A and the second side C2 of the first type of sub-pixel 101A are separated by a first gap D1. At this time, the third light-shielding part 80 is not aligned with the second side C2 of the first type of sub-pixel 101A like the second light-shielding part 50, but there is a certain gap between the third light-shielding part 80 and the second side C2 of the first type of sub-pixel 101A. In this way, the third light-shielding part 80 can block large-angle light, while small-angle light is still blocked by the second light-shielding part 50. It is beneficial to combine the second light-shielding part 50 and the third light-shielding part 80 to achieve the purpose of blocking light at different angles, and it is beneficial to reduce the fabrication width of the second light-shielding part 50 and the third light-shielding part 80 in the first direction X1, and avoid the structural crowding of the second light-shielding part 50 and the third light-shielding part 80.

[0041] Similarly, by way of example, the first light-shielding part 40 for privacy protection can also be designed in a similar way. The fabrication length of the first light-shielding part 40 in the privacy layer 60 can be shortened, and another light-shielding part can be fabricated in the touch layer 70 to block the large-angle light emitted by the first type of sub-pixel 101A toward the driver's seat 1, thereby achieving the privacy protection effect.

[0042] Figure 8 This is a schematic diagram of the structure of another display panel provided in this application.

[0043] In one embodiment of this application, such as Figure 8 As shown, the display panel 100 also includes a privacy layer 60, which is located on the side of the encapsulation layer 20 away from the pixel layer 10. The display panel 100 also includes a touch layer 70, which is located between the privacy layer 60 and the encapsulation layer 20. The touch layer 70 can be used to fabricate a metal trace structure, and the touch layer 70 is used to receive and transmit touch signals from the display panel 100.

[0044] In this embodiment, the first light-shielding part 40 is located on the privacy layer 60, and the second light-shielding part 50 is located on the touch layer 70. From the structure of the display panel 100 provided in this application, in the direction perpendicular to the plane of the display panel 100, the distance between the privacy layer 60 and the pixel layer 10 is greater than the distance between the touch layer 70 and the pixel layer 10. Considering the light emission from the first type of sub-pixel 101A from the pixel opening towards the light-emitting side of the display panel 100, with a fixed length of light-shielding structure, a greater distance from the pixel layer 10 is more beneficial for improving the blocking range of light from different angles. Therefore, placing the first light-shielding part 40 on the privacy layer 60 is beneficial for increasing the range of light that the first light-shielding part 40 can block, thereby avoiding a large fabrication length for the first light-shielding part 40. Furthermore, since the light-shielding range requirement of the second light-shielding part 50 is relatively small, the second light-shielding part 50 can be prepared on the touch layer 70, which is beneficial to reuse the touch layer 70 to prepare the second light-shielding part 50, improve the film utilization rate of the touch layer 70, and improve the preparation efficiency. Figure 9 This is a schematic diagram of the structure of another display panel provided in this application.

[0045] In one embodiment of this application, such as Figure 9 As shown, the touch layer 70 includes a first trace L1, at least a portion of which is reused as a second light-shielding portion 50. The first trace L1 may be a trace extending in a first direction X1 or a second direction X2. In this embodiment, the first trace L1 is taken as an example as a trace extending in the second direction X2. When fabricating the first trace L1, it can be positioned close to the first type of sub-pixel 101A as needed, so that the portion of the first trace L1 close to the first type of sub-pixel 101A can be reused as the second light-shielding portion 50. This helps to reduce the process steps, reduce the fabrication cost, and improve the fabrication efficiency of the light-shielding portion.

[0046] In addition, in some other embodiments, a certain length of the first light-shielding portion 40 and the second light-shielding portion 50 can be made into the touch layer 70 as needed, which helps to avoid the light-shielding portion occupying the film layer alone and helps to reduce the manufacturing cost.

[0047] Figure 10 This is a schematic diagram of the structure of another display panel provided in this application. Figure 11 This is a schematic diagram of the structure of another display panel provided in this application.

[0048] In one embodiment of this application, such as Figure 10 As shown, both the first light-shielding portion 40 and the second light-shielding portion 50 are located within the privacy layer 60. The display panel 100 also includes a transparent additional film layer 90, which is located between the privacy layer 60 and the pixel layer 10. This transparent additional film layer 90 can be used to increase the distance between the first light-shielding portion 40 and the second light-shielding portion 50 and the first type of sub-pixel 101A in a direction perpendicular to the plane of the display panel 100, thereby increasing the light-shielding range of the first light-shielding portion 40 and the second light-shielding portion 50 while maintaining a constant width. This is beneficial for further improving the light-shielding effect of the first light-shielding portion 40 and the second light-shielding portion 50, and reducing the width that the first light-shielding portion 40 and the second light-shielding portion 50 need to be fabricated in the first direction X1.

[0049] Or, such as Figure 11 As shown, the first light-shielding part 40 is located within the privacy layer 60, and the second light-shielding part 50 is located within the touch layer 70. The display panel 100 also includes a transparent additional film layer 90, which is located between the privacy layer 60 and the pixel layer 10. The transparent additional film layer 90 can be used to increase the distance between the first light-shielding part 40 and the first type of sub-pixel 101A in the direction perpendicular to the plane of the display panel 100. This is beneficial to increasing the light-shielding range of the first light-shielding part 40 while keeping its width unchanged, and further improving the privacy effect of the first light-shielding part 40. This is beneficial to reducing the width of the first light-shielding part 40 that needs to be manufactured. Figure 12 This is a schematic diagram of the structure of another display panel provided in this application. Figure 13 This is a schematic diagram of the structure of another display panel provided in this application.

[0050] In one embodiment of this application, such as Figure 12 As shown, both the first light-shielding part 40 and the second light-shielding part 50 are located in the privacy layer 60. The display panel 100 also includes a lens A10, which is located in the privacy layer 60 and includes a surface protruding in a direction away from the pixel layer 10. The lens A10 has a certain light-gathering ability, and in this embodiment, the lens A10 is arranged to overlap with the first type of sub-pixel 101A. This allows the light emitted from the first type of sub-pixel 101A toward the light-emitting side of the display panel 100 to be gathered by the lens A10, thereby improving the brightness of the first type of sub-pixel 101A when viewed from a normal angle, reducing the divergence of the light emitted from the first type of sub-pixel 101A, and improving the privacy effect of the display panel 100.

[0051] Or, such as Figure 13 As shown, the first light-shielding part 40 is located within the privacy layer 60, and the second light-shielding parts 50 are both located within the touch layer 70. The display panel 100 also includes a lens A10, which is located within the privacy layer 60 and includes a surface protruding in a direction away from the pixel layer 10. The lens A10 has a certain light-gathering capability, and in this embodiment, the lens A10 overlaps with the first type of sub-pixel 101A. This allows the light emitted from the first type of sub-pixel 101A toward the light-emitting side of the display panel 100 to be gathered by the lens A10, thereby improving the brightness of the first type of sub-pixel 101A when viewed from a normal angle, reducing the divergence of the light emitted from the first type of sub-pixel 101A, and improving the privacy effect of the display panel 100.

[0052] Figure 14 This is a schematic diagram of the structure of another display panel provided in this application. Figure 15 This is a schematic diagram of the structure of another display panel provided in this application. Figure 16 This is a schematic diagram of the structure of another display panel provided in this application. Figure 17 This is a schematic diagram of the structure of another display panel provided in this application.

[0053] In one embodiment of this application, such as Figure 14 As shown, both the first light-shielding portion 40 and the second light-shielding portion 50 are located on the privacy layer 60. The display panel 100 also includes a lens A10, which is located on the side of the privacy layer 60 away from the pixel layer 10, and the lens A10 includes a surface that protrudes in a direction away from the pixel layer 10. The lens A10 has a certain light-gathering ability. In this embodiment, it is disposed in a direction perpendicular to the plane of the display panel 100. The lens A10 covers the first type of sub-pixel 101A and at least partially covers the edge of the first light-shielding portion 40. This design ensures there is no gap between the first light-shielding part 40 and the lens A10. Thus, in the light emitted from the first type of sub-pixel 101A towards the light-emitting surface of the display panel 100, the large-angle light rays emanating towards the driver's seat 1 can be at least partially blocked by the first light-shielding part 40. The small-angle light rays emanating towards the first side C1 can be at least partially blocked by the first light-shielding part 40 and are at least partially focused by the lens A10, improving the brightness of the emitted light at a normal viewing angle. The small-angle light rays emanating from the first type of sub-pixel 101A towards the second side C2 can also be at least partially focused by the lens A10, and some small-angle light rays can be blocked by the second light-shielding part 50. This further improves the reliability of focusing the light rays emanating from the first type of sub-pixel 101A towards the first side C1.

[0054] For example, such as Figure 15As shown, both the first light-shielding part 40 and the second light-shielding part 50 are located in the privacy layer 60. A certain distance can be provided between the first light-shielding part 40 and the first side C1 of the first type of sub-pixel 101A, and a certain distance can also be provided between the second light-shielding part 50 and the second side C2 of the first type of sub-pixel 101A. These two distances can be the same or different. When setting the lens A10, the lens A10 covers the first type of sub-pixel 101A, and the lens A10 covers the edge of the first light-shielding part 40 near the first side C1. This helps reduce the degree to which small-angle light emitted from the first type of sub-pixel 101A towards the first side C1 is also blocked and reflected. It also helps to use the lens A10 to focus the small-angle light emitted from the first type of sub-pixel 101A towards the first side C1 towards the normal viewing angle, achieving both privacy protection for the driver's seat 1 and improving the light output and efficiency of the first type of sub-pixel 101A. Similarly, a lens can be configured to cover the first type of sub-pixel 101A and the edge of the second light-shielding part 50 near the second side C2. This helps reduce the degree to which small-angle light emitted from the first type of sub-pixel 101A towards the second side C2 is blocked and reflected. The lens A10 concentrates the small-angle light emitted from the first type of sub-pixel 101A towards the second side C2 towards the normal viewing angle. This improves the balance between the brightness of the light emitted from the first type of sub-pixel 101A towards the first side C1 and the second side C2, and also improves the light output and light output efficiency of the first type of sub-pixel 101A. This, in turn, helps increase the light output of the display panel 100 and improves the viewing effect of the display panel 100 from the passenger seat 2.

[0055] Or, such as Figure 16 As shown, the first light-shielding part 40 is located in the privacy layer 60, and the second light-shielding part 50 is located in the touch layer 70. The display panel 100 also includes a lens A10, which is located on the side of the privacy layer 60 away from the pixel layer 10, and the lens A10 includes a surface that protrudes in a direction away from the pixel layer 10. The lens A10 has a certain light-gathering ability. In this embodiment, it is disposed in a direction perpendicular to the plane of the display panel 100. The lens A10 covers the first type of sub-pixel 101A and at least partially covers the edge of the first light-shielding part 40. This ensures that there is no gap between the first light-shielding part 40 and the lens A10, which is beneficial to further improve the reliability of focusing the light emitted from the first type of sub-pixel 101A toward the driver's seat 1.

[0056] For example, such as Figure 17As shown, the first light-shielding part 40 is located in the privacy layer 60, and the second light-shielding part 50 is located in the touch layer 70. A certain distance can be provided between the first light-shielding part 40 and the first side C1 of the first type of sub-pixel 101A, and a certain distance can also be provided between the second light-shielding part 50 and the second side C2 of the first type of sub-pixel 101A. These two distances can be the same or different. When setting the lens A10, the lens A10 covers the first type of sub-pixel 101A, and the lens A10 covers the edge of the first light-shielding part 40 near the first side C1. This helps to reduce the degree to which small-angle light emitted from the first type of sub-pixel 101A towards the first side C1 is also blocked and reflected. It also helps to use the lens A10 to focus the small-angle light emitted from the first type of sub-pixel 101A towards the first side C1 towards the normal viewing angle, achieving both a privacy effect for the driver's seat 1 direction and improving the light output and light output efficiency of the first type of sub-pixel 101A. Similarly, a lens can be configured to cover the first type of sub-pixel 101A and overlap with the edge of the second light-shielding part 50 near the second side C2. This helps reduce the degree to which small-angle light emitted from the first type of sub-pixel 101A towards the second side C is blocked and reflected. The lens A10 concentrates the small-angle light emitted from the first type of sub-pixel 101A towards the second side C2 towards the normal viewing angle. This improves the balance between the brightness of the light emitted from the first type of sub-pixel 101A towards the first side C1 and the second side C2, and also improves the light output and light output efficiency of the first type of sub-pixel 101A. This, in turn, helps increase the light output of the display panel 100 and improves the viewing effect of the display panel 100 from the passenger seat 2.

[0057] Figure 18 This is a partial planar schematic diagram of a display panel provided in this application. Figure 19 A planar schematic diagram of a first type of sub-pixel in a related technology provided in this application.

[0058] In one embodiment of this application, such as Figure 18 As shown, the length of the first type of sub-pixel 101A in the second direction X2 is greater than its width in the first direction X1. The second direction X2 is also parallel to the plane where the display panel 100 is located, and the first direction X1 intersects with the second direction X2. Based on the above embodiments, it is clear that when using the display panel 100, there is a need for privacy protection in the first direction X1. Therefore, it is necessary to reduce the amount of light distributed by the first type of sub-pixel 101A in the first direction X1.

[0059] In related technologies, such as Figure 19As shown, a first type of sub-pixel 101A' requiring privacy protection in the first direction X1 extends along the first direction X1, meaning its length in the first direction X1 is greater than its width in the second direction X2. In this case, the amount of light emitted from the first type of sub-pixel 101A' is relatively large in the first direction X1. Furthermore, when setting up the privacy protection device 40' corresponding to the first type of sub-pixel 101A', privacy protection devices 40' need to be set at multiple positions of the first type of sub-pixel 101A', such as both sides and the middle, to reduce the amount of light dispersed by the first type of sub-pixel 101A' in the first direction X1. Research has found that this arrangement easily leads to a decrease in the pixel aperture area of ​​the first type of sub-pixel 101A', significantly affecting the emitted brightness of the first type of sub-pixel 101A'.

[0060] Therefore, in this embodiment of the application, in response to the privacy requirement in the first direction X1, the first type of sub-pixel 101A is set to extend in the second direction X2. The length of the first type of sub-pixel 101A in the second direction X2 is greater than its width in the first direction X1, so that the light emitted by the first type of sub-pixel 101A mainly diverges in the second direction X2. Only the first light-blocking part 40 and the second light-blocking part 50 need to be set on both sides of the first type of sub-pixel 101A in the first direction X1, which helps to reduce the complexity of setting up privacy protection for the first type of sub-pixel 101A.

[0061] Figure 20 This is a schematic diagram of the structure of another display panel provided in this application.

[0062] In one embodiment of this application, such as Figure 20 As shown, the distance between the surface of the pixel layer 10 facing the first light-shielding part 40 and the surface of the first light-shielding part 40 facing the pixel layer 10 is h1. In the direction perpendicular to the plane of the display panel 100, the side of the privacy layer 60 away from the pixel layer 10 includes a first medium J1, the refractive index of the first medium J1 being n1. The refractive index of the privacy layer 60 is n2. Light will exit to the display panel 100 after passing through the privacy layer 60. Since the light emitted by the first type of sub-pixel 101A is divergent, the light emitted from the positions near the first side C1 and near the second side C2 of the first type of sub-pixel 101A includes light emitted towards the driver's seat 1, and the light emitted towards the driver's seat 1 from the position near the first side C1 can be easily blocked by the first light-shielding part 40. However, as Figure 20As shown, it is difficult for the first light-shielding part 40 to block the light emitted from the position of the first type of sub-pixel 101A near the second side C2 towards the driver's seat 1, especially when the width of the first type of sub-pixel 101A in the first direction X1 is large. In such cases, the light emitted from the position of the second side C2 towards the driver's seat 1 may not be captured by the first light-shielding part 40, affecting the privacy protection effect. Therefore, to improve the privacy protection effect of the first type of sub-pixel 101A, the width of the first type of sub-pixel 101A in the first direction X1 is further limited according to the refractive index of the film layer and the required emission angle.

[0063] like Figure 20 As shown, the maximum exit angle of light emitted from the privacy layer 60 into the first medium J1 is θ5. θ5 is the maximum angle of light that the first type of sub-pixel 101A can emit towards the driver's seat 1, which is acceptable according to actual privacy requirements. Light rays with an angle greater than θ5 emitted towards the driver's seat 1 will affect the privacy effect. Corresponding to the maximum exit angle θ5 of light emitted from the privacy layer 60 into the first medium J1, the maximum acceptable incident angle of light within the privacy layer 60 is θ6. The light with the maximum incident angle θ6 is emitted from the second side C2 position of the first type of sub-pixel 101A towards the driver's seat 1.

[0064] In one embodiment of this application, the privacy layer 60 includes a transparent material, the first medium J1 is air, and optionally, the first light-blocking part 40 and the second light-blocking part 50 in the privacy layer 60 are non-transparent materials, and the other transparent materials used to fill the privacy layer 60 are glass.

[0065] Based on the above structure, parameters, and the law of refraction, the maximum incident angle θ6 = arcsin((n1) is proposed as acceptable for the first type of sub-pixel 101A to emit light towards the privacy layer 60. sinθ5) / n2). Therefore, it can be concluded that the width of the first type of sub-pixel 101A in the first direction is W3, W3=tanθ6 h1. Thus, the maximum width W3 that the first type of sub-pixel 101A can be set in the first direction X1 can be obtained while meeting the privacy protection requirements, which is conducive to more accurately realizing the privacy protection requirements of the display panel 100 and improving the privacy protection reliability of the display panel 100.

[0066] For example, the maximum acceptable emission angle θ5 from the first type of sub-pixel 101A towards the driver's seat 1 is 45°. Then, based on the above structure and parameters and the law of refraction, the maximum acceptable incident angle θ6 when the first type of sub-pixel 101A emits light towards the privacy layer 60 is proposed to be arcsin((n1) sin45°) / n2). This leads to the maximum width W3 of the first type of sub-pixel 101A in the first direction X1, W3 = tanθ6. h1.

[0067] Figure 21 A partial plan view of another display panel provided in this application.

[0068] In one embodiment of this application, such as Figure 21 As shown, the plurality of sub-pixels 101 also includes a sub-pixel group Z101, which includes a first type sub-pixel 101A and a second type sub-pixel 101B. Within the same sub-pixel group Z101, the first type sub-pixel 101A and the second type sub-pixel 101B have the same emission color and the same length in the second direction X2. The width of the second type sub-pixel 101B in the first direction X1 is greater than or equal to the width of the first type sub-pixel 101A in the first direction X1. The inclusion of a first type sub-pixel 101A with a privacy protection effect within the same sub-pixel group Z101 facilitates the selective activation of the first type sub-pixel 101A when privacy protection is required. Optionally, in cases where privacy protection requirements are low, activating the second type sub-pixel 101B within the sub-pixel group Z101 can improve the usability of the display panel 100.

[0069] On the other hand, the first type of sub-pixel 101A is set to achieve the privacy protection of the display panel 100. Setting the width of the first type of sub-pixel 101A in the first direction X1 is smaller, which helps to reduce the amount of light dispersed by the first type of sub-pixel 101A in the first direction X1, thereby improving the privacy protection effect of the first type of sub-pixel 101A.

[0070] In this embodiment, within the same sub-pixel group Z101, a first type of sub-pixel 101A and a second type of sub-pixel 101B are arranged along a first direction X1, with the second type of sub-pixel 101B located on the side C2 of the first type of sub-pixel 101A away from the first side C1. Taking the display panel 100 as an example in the automotive display field, the first side C1 of the first type of sub-pixel 101A is close to the driver's seat 1 in the car, and the second side C2 of the first type of sub-pixel 101A is close to the passenger seat 2 in the car. By arranging the first type of sub-pixel 101A with privacy protection capabilities closer to the driver's seat C1 when setting the sub-pixel group Z101, it is beneficial to ensure that when the first type of sub-pixel 101A and the second type of sub-pixel 101B are working simultaneously, the first type of sub-pixel 101A with privacy protection capabilities can be closer to the driver's seat 1, reducing the amount of light emitted from the sub-pixel group Z101 towards the driver's seat 1.

[0071] Figure 22 This is a schematic diagram of the structure of another display panel provided in this application.

[0072] In one embodiment of this application, such as Figure 22 As shown, the second type of sub-pixel 101B includes a third side C3 and a fourth side C4 opposite each other in the first direction X1. In the same sub-pixel group Z101, the third side C3 is closer to the second side C2. In the same sub-pixel group Z101, the first type of sub-pixel 101A and the second type of sub-pixel 101B are arranged in the first direction X1, and the first type of sub-pixel 101A is closer to the driver's seat 1 in the first direction X1. Therefore, the third side C3 of the second type of sub-pixel 101B is closer to the driver's seat 1 in the first direction X1, and the fourth side C4 of the second type of sub-pixel 101B is closer to the passenger seat 2 in the first direction X1.

[0073] The third side C3 and the fourth side C4 are two opposite edge positions of the second type of sub-pixel 101B in the first direction X1. Analogous to the first type of sub-pixel 101A, optionally, the edge position of the second type of sub-pixel 101B can be specific to the edge position of a certain film layer. For example, the third side C3 and the fourth side C4 of the second type of sub-pixel 101B in the first direction X1 can be defined based on the edge position of the light-emitting layer; or the third side C3 and the fourth side C4 of the second type of sub-pixel 101B in the first direction X1 can be defined based on the edge position of the anode layer. It should be noted that when the edge position of sub-pixel 101 is defined by the boundary of a certain film layer, the first type of sub-pixel 101A and the second type of sub-pixel 101B use the same type of film layer to define the first side C1, the second side C2, the third side C3, and the fourth side C4, respectively.

[0074] In the embodiments of this application, reference continues to be made to Figure 22 As shown, the display panel 100 also includes a fourth light-shielding portion A20, which is located on the side of the encapsulation layer 20 away from the pixel layer 10. In the direction perpendicular to the plane of the display panel 100, the fourth light-shielding portion A20 does not overlap with the second type of sub-pixel 101B and is close to the third side C3 of the second type of sub-pixel 101B. The display panel 100 also includes a fifth light-shielding portion A30, located on the side of the encapsulation layer 20 away from the pixel layer 10. In a direction perpendicular to the plane of the display panel 100, the fifth light-shielding portion A30 does not overlap with the second type of sub-pixel 101B and is close to the fourth side C4 of the second type of sub-pixel 101B. In this embodiment, a light-shielding portion is also provided for the second type of sub-pixel 101B, which is beneficial for blocking light emitted from the second type of sub-pixel 101B towards the third side C3. Furthermore, the display panel 100 provides a fourth light-shielding portion A20 and a fifth light-shielding portion A30, which is beneficial for blocking at least a portion of the light emitted from the second type of sub-pixel 101B towards the fourth side C4.

[0075] It should be noted that, based on the above, sub-pixel 101 includes multiple functional film layers, among which the light-emitting layer included in sub-pixel 101 is a film layer directly related to the display of light. For example, the edge position of the second type of sub-pixel 101B is defined relative to the edge position of the light-emitting layer, defining the third side C3 and the fourth side C4 of the second type of sub-pixel 101B opposite each other in the first direction X1. The third side C3 of the second type of sub-pixel 101B can be specifically considered as the boundary position of the light-emitting layer of the second type of sub-pixel 101B. The fact that the fourth light-shielding portion A20 does not overlap with the second type of sub-pixel 101B and is close to the third side C3 of the second type of sub-pixel 101B can be considered as the fourth light-shielding portion A20 at least not overlapping with the light-emitting layer of the second type of sub-pixel 101B and being close to the third side C3 of the light-emitting layer of the second type of sub-pixel 101B. Furthermore, when the fourth light-shielding portion A20 is close to the third side C3 of the second type sub-pixel 101B, in the direction parallel to the plane where the display panel 100 is located, the distance between the fourth light-shielding portion A20 and the third side C3 of the light-emitting layer among the multiple film layers of the second type sub-pixel 101B is ≥0. Similarly, the fourth side C4 of the second type sub-pixel 101B can be specifically considered as another boundary position of the light-emitting layer of the second type sub-pixel 101B. The fifth light-shielding portion A30 not overlapping with the second type sub-pixel 101B and close to the fourth side C4 of the second type sub-pixel 101B can be considered as the fifth light-shielding portion A30 not overlapping with the light-emitting layer of the second type sub-pixel 101B and close to the fourth side C4 of the light-emitting layer of the second type sub-pixel 101B. Furthermore, when the fifth light-shielding portion A30 is close to the fourth side C4 of the second type sub-pixel 101B, in a direction parallel to the plane where the display panel 100 is located, the distance between the fifth light-shielding portion A30 and the fourth side C4 of the light-emitting layer in the plurality of film layers of the second type sub-pixel 101B is ≥0.

[0076] Optionally, such as Figure 22 As shown, the width of the fourth light-shielding part A20 in the first direction X1 can be set to be greater than the width of the fifth light-shielding part A30 in the first direction X1, so that the light-shielding range of the fourth light-shielding part A20 is greater than the light-shielding range of the fifth light-shielding part A30. The setting of the fifth light-shielding part A30 can reduce the brightness difference between different areas of the display panel 100 and avoid the "yin-yang screen phenomenon". In this way, setting both the first type of sub-pixel 101A and the second type of sub-pixel 101B to include light-shielding parts is beneficial to adapt to the situation where the first type of sub-pixel 101A and the second type of sub-pixel 101B in the sub-pixel group Z101 are simultaneously turned on, and also gives the display panel 100 a certain degree of privacy protection.

[0077] Furthermore, after implementing privacy protection for the sub-pixels 101 in the display panel 100, the light emission efficiency of the sub-pixels 101 is reduced to some extent, thereby lowering the display effect of the display panel 100. In this case, setting two sub-pixels 101 of the same color in the same sub-pixel group Z101 increases the pixel density. Although both types of sub-pixels 101 are protected against privacy, the increased number of sub-pixels 101 also compensates for the reduced display effect of the display panel 100 to some extent.

[0078] The fourth light-shielding part C4 includes a second gap D2 between the side of the second type sub-pixel 101B it blocks and the third side C3. In other words, the fourth light-shielding part C4 and the third side C3 of the second type sub-pixel 101B are not approximately aligned. This is beneficial for using the fourth light-shielding part C4 to block the large-angle light emitted by the second type sub-pixel 101B towards the third side C3 as much as possible, thereby achieving the privacy protection performance. This reduces the degree of blocking of the small-angle light emitted by the fourth light-shielding part C4 towards the third side C3 of the second type sub-pixel 101B, thus ensuring the light emission effect of the second type sub-pixel 101B. Meanwhile, the fifth light-shielding part A30 includes a third gap D3 between the side of the second type sub-pixel 101B that it blocks and the third side C3. Therefore, the fifth light-shielding part A30 and the fourth side A30 of the second type sub-pixel 101B are not approximately aligned. This also helps to reduce the degree of obstruction of the fifth light-shielding part A30 on the small-angle light emitted by the second type sub-pixel 101B toward the fourth side C4.

[0079] In some other embodiments, the fourth light-shielding portion A20 and the fifth light-shielding portion A30 may be configured to have the same width in the first direction X1, and the second spacing D2 and the third spacing D3 may also have the same width in the first direction X1. By including the third spacing D3 between the fifth light-shielding portion A30 and the fourth side C4, the fourth light-shielding portion A20 and the fifth light-shielding portion A30 can achieve a certain degree of symmetry relative to the same second-type sub-pixel 101B. This is beneficial for improving the symmetry of the light range emitted by the second-type sub-pixel 101B and reducing the risk of "yin-yang screen phenomenon" caused by setting a light-shielding structure for the second-type sub-pixel 101B.

[0080] In one embodiment of this application, reference continues to be made to... Figure 22 As shown, setting the second spacing D2 to be less than or equal to the third spacing D3 is beneficial to make the light-blocking range of the third light-blocking part A20 larger, reducing the amount of light emitted towards the driver's seat 1 when the second type of sub-pixel 101B is turned on, and improving the anti-spy effect when both the first type of sub-pixel 101A and the second type of sub-pixel 101B are turned on.

[0081] In one embodiment of this application, reference continues to be made to... Figure 22As shown, the distance between two adjacent sub-pixels 101 in the first direction X1 is c. The width of the fourth light-blocking part A20 in the first direction X1 is greater than the width of the fifth light-blocking part A30 in the first direction X1, thereby increasing the light-blocking range of the fourth light-blocking part A20. Furthermore, the widths of both the fourth light-blocking part A20 and the fifth light-blocking part A30 in the first direction X1 are set to be less than c. Neither the fourth light-blocking part A20 nor the fifth light-blocking part A30 completely blocks the space between two adjacent first-type sub-pixels 101A and second-type sub-pixels 101B, which helps to reserve a certain amount of outgoing space for light and ensure the amount of light emitted from the sub-pixels 101.

[0082] Figure 23 This is a schematic diagram of the structure of another display panel provided in this application. Figure 24 This is a schematic diagram of the structure of another display panel provided in this application. In one embodiment of this application, such as Figure 23 As shown, the display panel 100 also includes a touch layer 70, which is located between the privacy layer 60 and the encapsulation layer 20. Taking an example where both the first light-shielding portion 40 and the second light-shielding portion 50 are located within the privacy layer 60.

[0083] In this embodiment, the fourth light-shielding part A20 and the fifth light-shielding part A30 are both located on the privacy layer 60 or the touch layer 70. For example... Figure 23 As shown, the fourth light-shielding portion A20 and the fifth light-shielding portion A30 are exemplaryly disposed in the privacy layer 60. This facilitates increasing the distance between the fourth light-shielding portion A20 and the fifth light-shielding portion A30 and the pixel layer 10, thereby ensuring that the light-shielding range of the fourth light-shielding portion A20 and the fifth light-shielding portion A30 can be increased while maintaining the same width, which is beneficial for reducing the fabrication width of the fourth light-shielding portion A20 and the fifth light-shielding portion A30.

[0084] In some other embodiments, the fourth light-shielding part A20 and the fifth light-shielding part A30 may both be located in the touch layer 70.

[0085] Alternatively, one of the fourth light-shielding part A20 and the fifth light-shielding part A30 may be located in the privacy layer 60, and the other in the touch layer 70. For example, as shown... Figure 24 As shown, the fourth light-shielding part A20 is located in the privacy layer 60, and the fifth light-shielding part A30 is located in the touch layer 70. This is beneficial to increasing the light-shielding range of the fourth light-shielding part A20 and improving the film utilization rate of the touch layer 70.

[0086] Figure 25 This is a schematic diagram of the working mode of a display panel provided in this application.

[0087] In one embodiment of this application, such as Figure 25As shown, the operating modes of the display panel 100 include a privacy mode M1 and a non-privacy mode M2. Taking the application of the display panel 100 in the automotive field as an example, the privacy mode M1 is used when it is necessary to reduce the amount of light emitted by the display panel 100 towards the driver's seat 1 to prevent the light emitted by the display panel 100 from affecting the driving of the driver's seat 1; the non-privacy mode M2 ​​is used when the need to reduce the amount of light emitted by the display panel 100 towards the driver's seat 1 is smaller, such as when the vehicle is stopped. In this case, the amount of light emitted by the display panel 100 can be appropriately increased to improve the display effect of the display panel 100.

[0088] In the privacy mode M1, the first type of sub-pixel 101A emits light while the second type of sub-pixel 101B does not emit light, or both the first type of sub-pixel 101A and the second type of sub-pixel 101B emit light. In the privacy mode M1, at least the first type of sub-pixel 101A, which has good privacy protection performance, is activated to ensure the privacy protection performance of the display panel 100 when it is emitting light.

[0089] In non-spy mode M2, the second type of subpixel 101B emits light while the first type of subpixel 101A does not, or both the first type of subpixel 101A and the second type of subpixel 101B emit light. In non-spy mode M1, at least the second type of subpixel 101B with a larger light emission range is activated to ensure the light emission effect of the display panel 100.

[0090] Figure 26 A partial plan view of another display panel provided in this application.

[0091] In one embodiment of this application, such as Figure 26 As shown, the lengths of the first light-shielding portion 40 and the second light-shielding portion 50 in the second direction X2 are both greater than or equal to the length of the first type of sub-pixel 101A in the second direction X2. In this application, the display panel 100 has a privacy requirement in the first direction X1. It is necessary to use light-shielding portions to effectively block the light emitted by the first type of sub-pixel 101A in the first direction X1. This helps ensure the light-shielding reliability of the first light-shielding portion 40 and the second light-shielding portion 50, and avoids situations where the lengths of the first light-shielding portion 40 and the second light-shielding portion 50 in the second direction X2 are too small, causing some positions of the first type of sub-pixel 101A to not correspond to the light-shielding structure in the first direction X1.

[0092] Figure 27 A partial plan view of another display panel provided in this application. Figure 28 A partial plan view of another display panel provided in this application.

[0093] In one embodiment of this application, reference continues to be made to... Figure 27As shown, a plurality of first-type sub-pixels 101A are arranged in the second direction X2; in the first direction X1, the first light-blocking portion 40 overlaps simultaneously with at least two adjacent first-type sub-pixels 101A in the second direction X2, and the second light-blocking portion 50 overlaps simultaneously with at least two adjacent first-type sub-pixels 101A in the second direction X2. For example, the arrangement of the plurality of sub-pixels 101 on the display panel is as follows: Figure 27 As shown. The multiple sub-pixels 101 include a red sub-pixel R, a green sub-pixel G, and a blue sub-pixel B. Furthermore, the multiple sub-pixels 101 can be divided into three sub-pixel groups: one consisting of a red first-type sub-pixel 101A and a red second-type sub-pixel 101B; another consisting of a green first-type sub-pixel 101A and a green second-type sub-pixel 101B; and yet another consisting of a blue first-type sub-pixel 101A and a blue second-type sub-pixel 101B. The first light-shielding part 40 and the second light-shielding part 50 are both structures with a certain continuity in the second direction X2, so that the first light-shielding part 40 and the second light-shielding part 50 overlap with at least two first type sub-pixels 101A that are adjacent in the second direction X2 in the first direction X1. This helps to reduce the manufacturing difficulty of the first light-shielding part 40 and the second light-shielding part 50, and improves the reliability of the first light-shielding part 40 and the second light-shielding part 50 in blocking the light emitted by the first type sub-pixel 101A in the first direction X1.

[0094] Or, such as Figure 28 As shown, a plurality of first-type sub-pixels 101A are arranged in the second direction X2. Exemplarily, the arrangement of the plurality of sub-pixels 101 on the display panel is as follows: Figure 28As shown. The plurality of sub-pixels 101 includes a red sub-pixel R, a green sub-pixel G, and a blue sub-pixel B. Furthermore, the plurality of sub-pixels 101 can be divided into three sub-pixel groups Z101: one consisting of a red first-type sub-pixel 101A and a red second-type sub-pixel 101B; another consisting of a green first-type sub-pixel 101A and a green second-type sub-pixel 101B; and yet another consisting of a blue first-type sub-pixel 101A and a blue second-type sub-pixel 101B. In the first direction X1, the first light-blocking portion 40 simultaneously overlaps with at least two adjacent first-type sub-pixels 101A in the second direction X2, and the plurality of second light-blocking portions 50 overlap with the first-type sub-pixels 101A one-to-one in the first direction X1. The first light-shielding portion 40 is configured with a certain continuity in the second direction X2, allowing it to overlap with at least two adjacent first-type sub-pixels 101A in the second direction X2 in the first direction X1. This reduces the fabrication difficulty of the first light-shielding portion 40 and improves the reliability of its blocking of light emitted from the first-type sub-pixels 101A in the first direction X1. The second light-shielding portion 50 is configured to correspond one-to-one with the first-type sub-pixels 101A in the first direction X1. This facilitates the blocking of small-angle light with the second light-shielding portion 50 and avoids blocking a wider range of light, thereby improving the light extraction efficiency of the first-type sub-pixels 101A.

[0095] Figure 29 This is a plan view of a display device provided in this application.

[0096] This application provides a display device 200, such as... Figure 29 As shown, the display device 200 includes the display panel 100 as provided in the above embodiments. Optionally, the display device 200 is a display device with privacy protection requirements used in fields such as automobiles and aerospace.

[0097] In the display device 200, the first type of sub-pixel 101A in the display panel 100 that requires privacy protection is protected on both sides, that is, a first light-blocking part 40 and a second light-blocking part 50 are provided. The second light-blocking part 50 can adjust the range of the emission angle of the first type of sub-pixel 101A that it can block according to the viewing effect when the passenger seat 2 looks at the display panel 100. This makes the brightness of the small-angle light emitted by the display panel 100 toward the first side C1 and the second side C2 symmetrical, and makes the brightness of the large-angle light emitted by the first type of sub-pixel 101A maintain a normal attenuation ratio. This improves the display uniformity and privacy protection performance of the display panel 100, improves the brightness consistency of the screen when the passenger seat 2 looks at the display panel 100, reduces the risk of "yin-yang screen phenomenon", and improves the viewing effect of the display panel 100.

[0098] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A display panel, characterized in that, include: A pixel layer includes multiple sub-pixels, among which a first type of sub-pixels are included. The first type of sub-pixels includes a first side and a second side opposite to each other in a first direction; the first direction is parallel to the plane where the display panel is located. An encapsulation layer is located on the side of the pixel layer away from the substrate; The first light-shielding part is located on the side of the encapsulation layer away from the pixel layer; in the plane direction perpendicular to the display panel, the first light-shielding part does not overlap with the first type of sub-pixel and is close to the first side of the first type of sub-pixel; The second light-shielding part is located on the side of the encapsulation layer away from the pixel layer; in the plane direction perpendicular to the display panel, the second light-shielding part does not overlap with the first type of sub-pixel and is close to the second side of the first type of sub-pixel; Wherein, the emission angle of the emitted light from the first type of sub-pixel is α; the emission angle α of the emitted light that can be blocked by the first light-blocking part is in the range of θ1≤a≤θ2; the emission angle α of the emitted light that can be blocked by the second light-blocking part is in the range of θ3≤a≤θ4. θ1≤θ3<θ2, and θ4<θ2.

2. The display panel according to claim 1, characterized in that, θ1=0°, 45°≤θ2≤60°.

3. The display panel according to claim 1, characterized in that, θ3 = 15° or θ3 = 0°; θ4 = 20°.

4. The display panel according to claim 1, characterized in that, In the first direction, the side of the first light-shielding portion near the first type of sub-pixel it blocks tends to align with the first side of the first type of sub-pixel; the side of the second light-shielding portion near the first type of sub-pixel it blocks tends to align with the second side of the first type of sub-pixel.

5. The display panel according to claim 4, characterized in that, The width of the first light-shielding part in the first direction is W1, and the width of the second light-shielding part in the first direction is W2, where W1 > W2.

6. The display panel according to claim 5, characterized in that, The distance between the surface of the pixel layer facing the first light-shielding part and the surface of the first light-shielding part facing the pixel layer is h1; the distance between the surface of the pixel layer facing the second light-shielding part and the surface of the second light-shielding part facing the pixel layer is h2; Where W1=tanθ2 h1,W2=tanθ4 h2.

7. The display panel according to claim 5, characterized in that, W1≥15μm, 0<W2≤5μm.

8. The display panel according to claim 4, characterized in that, The display panel further includes a privacy shield layer located on the side of the encapsulation layer away from the pixel layer; Both the first light-blocking part and the second light-blocking part are located in the privacy layer.

9. The display panel according to claim 8, characterized in that, The display panel further includes a touch layer located between the privacy layer and the encapsulation layer; the display panel also includes a third light-shielding portion located within the touch layer; Wherein, in the direction perpendicular to the plane where the display panel is located, the third light-shielding part does not overlap with the first type of sub-pixel and is close to the second side of the first type of sub-pixel; there is a first gap between the side of the third light-shielding part that is close to the first type of sub-pixel it blocks and the second side of the first type of sub-pixel.

10. The display panel according to claim 4, characterized in that, The display panel also includes: A privacy shield is located on the side of the encapsulation layer away from the pixel layer; A touch layer is located between the privacy layer and the encapsulation layer; The first light-shielding part is located in the privacy layer, and the second light-shielding part is located in the touch layer.

11. The display panel according to claim 10, characterized in that, The touch layer includes a first trace, at least a portion of which is multiplexed as the second light-shielding portion.

12. The display panel according to claim 8 or 10, characterized in that, The display panel further includes a transparent additional film layer, which is located between the privacy layer and the pixel layer and can be used to increase the distance between the first light-shielding part and / or the second light-shielding part and the first type of sub-pixel in a direction perpendicular to the plane of the display panel.

13. The display panel according to claim 8 or 10, characterized in that, The display panel further includes a lens located in the privacy layer, and the lens includes a surface that protrudes in a direction away from the pixel layer; The lens overlaps with the first type of sub-pixel.

14. The display panel according to claim 8 or 10, characterized in that, The display panel further includes a lens located on the side of the privacy layer away from the pixel layer, and the lens includes a surface that protrudes in a direction away from the pixel layer; Wherein, in a direction perpendicular to the plane where the display panel is located, the lens covers the first type of sub-pixel and at least partially covers the edge of the first light-shielding part.

15. The display panel according to claim 8, characterized in that, The length of the first type of sub-pixel in the second direction is greater than its width in the first direction; the second direction is also parallel to the plane where the display panel is located, and the first direction intersects the second direction.

16. The display panel according to claim 15, characterized in that, The distance between the surface of the pixel layer facing the first light-shielding part and the surface of the first light-shielding part facing the pixel layer is h1; in the direction perpendicular to the plane of the display panel, the side of the privacy layer away from the pixel layer includes a first medium, the refractive index of the first medium is n1; the refractive index of the privacy layer is n2; the maximum exit angle of light when it exits the privacy layer into the first medium is θ5, and the maximum incident angle of light within the privacy layer is θ6. Where, θ6=arcsin((n1) sinθ5) / n2);The width of the first type of sub-pixel in the first direction is W3, W3=tanθ6) h1.

17. The display panel according to claim 16, characterized in that, The privacy layer comprises a transparent material, and the first medium is air.

18. The display panel according to claim 16, characterized in that, The plurality of sub-pixels further includes a sub-pixel group, the sub-pixel group including a first type of sub-pixel and a second type of sub-pixel; in the same sub-pixel group, the first type of sub-pixel and the second type of sub-pixel have the same emission color and the same length in the second direction; the width of the second type of sub-pixel in the first direction is greater than or equal to the width of the first type of sub-pixel in the first direction; In the same sub-pixel group, the first type of sub-pixels and the second type of sub-pixels are arranged along the first direction, and the second type of sub-pixels are located on the second side of the first type of sub-pixels away from the first side.

19. The display panel according to claim 18, characterized in that, The second type of sub-pixels includes a third side and a fourth side opposite to each other in the first direction; in the same group of sub-pixels, the third side is closer to the second side; The display panel also includes: The fourth light-shielding part is located on the side of the encapsulation layer away from the pixel layer; in the direction perpendicular to the plane where the display panel is located, the fourth light-shielding part does not overlap with the second type of sub-pixel and is close to the third side of the second type of sub-pixel; The fifth light-shielding part is located on the side of the encapsulation layer away from the pixel layer; in the direction perpendicular to the plane where the display panel is located, the fifth light-shielding part does not overlap with the second type of sub-pixel and is close to the fourth side of the second type of sub-pixel; Wherein, the fourth light-shielding part includes a second gap between the side of the second type of sub-pixel it blocks and the third side; the fifth light-shielding part includes a third gap between the side of the second type of sub-pixel it blocks and the third side.

20. The display panel according to claim 19, characterized in that, The second spacing is less than or equal to the third spacing.

21. The display panel according to claim 19, characterized in that, The distance between two adjacent sub-pixels in the first direction is c. The width of the fourth light-blocking part in the first direction is greater than the width of the fifth light-blocking part in the first direction, and the widths of both the fourth light-blocking part and the fifth light-blocking part in the first direction are less than c.

22. The display panel according to claim 19, characterized in that, The display panel also includes: A touch layer, located between the privacy layer and the encapsulation layer; The fourth light-shielding part and the fifth light-shielding part are both located in the privacy layer or the touch layer; Alternatively, one of the fourth light-shielding part and the fifth light-shielding part may be located in the privacy layer and the other may be located in the touch layer.

23. The display panel according to claim 19, characterized in that, The display panel has two operating modes: privacy mode and non-privacy mode. In the privacy mode, the first type of sub-pixel emits light while the second type of sub-pixel does not emit light, or both the first type of sub-pixel and the second type of sub-pixel emit light. In the non-peeping mode, the second type of sub-pixel emits light while the first type of sub-pixel does not emit light, or both the first type of sub-pixel and the second type of sub-pixel emit light.

24. The display panel according to claim 15, characterized in that, The lengths of the first light-blocking portion and the second light-blocking portion in the second direction are both greater than or equal to the lengths of the first type of sub-pixel in the second direction.

25. The display panel according to claim 24, characterized in that, Multiple first-type sub-pixels are arranged in the second direction; in the first direction, the first light-shielding portion overlaps with at least two first-type sub-pixels adjacent in the second direction, and / or, the second light-shielding portion overlaps with at least two first-type sub-pixels adjacent in the second direction.

26. A display device, characterized in that, Includes the display panel as described in any one of claims 1-25.

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