Display panel and display device

Abstract

This application discloses a display panel and a display device. The display panel includes a light-emitting layer and at least two light-shielding layers. The light-emitting layer includes a plurality of privacy-protecting light-emitting parts, and each light-shielding layer includes a light-shielding part. The display panel has a plurality of sensor openings. By making the minimum distance between the same sensor opening and the orthographic projection of the adjacent light-shielding parts in the at least two light-shielding layers on the reference plane unequal, the starting angles at which the at least two light-shielding layers block the sensor openings are staggered. This allows some light to pass through the projection gaps between the edges of each layer and be received by the sensor even at a large tilt angle, preventing the light flux from dropping sharply to zero. This improves the overall light flux of the sensor openings of the display panel over a large angle range.

Description

Technical Field

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

[0002] Compared to traditional liquid crystal display (LCD) technology, organic light-emitting diode (OLED) display technology boasts advantages such as fast response time, high contrast ratio, wide color gamut, and thinness and flexibility. These characteristics make it a promising candidate for flexible wearable devices, including smartwatches, virtual reality devices, mobile phones, and portable computers. With the continuous development and maturation of OLED display technology, the market share of OLED display panels is steadily increasing, especially in the mobile phone display panel market.

[0003] In the digital age, mobile phones carry a wealth of personal privacy: chat logs, financial information, private photos, etc. The security features they provide are becoming an "invisible defense" against privacy threats. With the increasing importance of secure information, privacy protection technology has become a key tool for protecting the privacy of individuals and businesses. A common approach is to designate half of the pixels as privacy pixels and place a light-blocking structure above them to limit the light emission angle, thus achieving the privacy effect. These light-blocking structures are typically arranged continuously or periodically across the entire screen or within specific functional areas of the display panel. Because the light-blocking structure itself is made of light-absorbing or low-transmittance materials and has a certain height and thickness, when it extends to cover the vicinity of the sensor opening, it inevitably blocks some incident light, leading to a reduction in the transmittance of the sensor opening.

[0004] Therefore, it is necessary to provide a display panel and display device to improve this deficiency. Summary of the Invention

[0005] This application provides a display panel and display device that can improve the overall luminous flux of the display panel over a wide viewing angle range.

[0006] To achieve the above objectives, according to a first aspect of this application, a display panel is provided, comprising: The light-emitting layer includes multiple privacy-protecting light-emitting components; At least two light-shielding layers are disposed on the light-emitting side of the light-emitting layer. Each light-shielding layer includes a light-shielding part. The orthographic projection of the light-shielding part on the reference plane surrounds the orthographic projection of the privacy light-emitting part on the reference plane. The reference plane is parallel to the light-emitting surface of the display panel. The display panel has multiple sensor openings, and the minimum distance between a sensor opening and the orthographic projection of an adjacent light-shielding part in one of the light-shielding layers onto the reference plane is not equal to the minimum distance between the same sensor opening and the orthographic projection of at least one adjacent light-shielding part in at least another light-shielding layer onto the reference plane.

[0007] Optionally, the at least two light-shielding layers include: A first light-shielding layer, wherein the light-shielding portion includes a first light-shielding portion located in the first light-shielding layer; The second light-shielding layer is disposed on the side of the first light-shielding layer away from the light-emitting layer, and the light-shielding part includes a second light-shielding part located in the second light-shielding layer; The minimum distance between the sensor opening and the orthographic projection edge of the adjacent first light-shielding part on the reference plane is not equal to the minimum distance between the sensor opening and the orthographic projection of the adjacent second light-shielding part on the reference plane.

[0008] Optionally, the minimum distance between the sensor opening and the orthographic projection edge of the adjacent first light-shielding part on the reference plane is a first distance, and the minimum distance between the sensor opening and the orthographic projection of the adjacent second light-shielding part on the reference plane is a second distance, wherein the first distance is less than the second distance.

[0009] Optionally, the display panel includes a pixel definition layer, the pixel definition layer is provided with the sensor opening, the first light-shielding layer is disposed on the pixel definition layer, the distance between the first light-shielding layer and the pixel definition layer in the thickness direction of the display panel is a first height, and the distance between the second light-shielding layer and the pixel definition layer in the thickness direction is a second height; Where h1 / d1≤h2 / d2, h1 is the first height, h2 is the second height, d1 is the first distance, and d2 is the second distance.

[0010] Optionally, a reference plane is defined as the virtual surface passing through the edge of the sensor opening near the adjacent second light-shielding part and the edge of the second light-shielding part near the adjacent sensor opening, and the edge of the first light-shielding part near the sensor opening is located on the side of the reference plane near the second light-shielding part.

[0011] Optionally, the angle between the reference plane and the reference surface is less than 45 degrees.

[0012] Optionally, the at least two light-shielding layers further include: A third light-shielding layer is disposed between the first light-shielding layer and the second light-shielding layer, and the light-shielding part includes a third light-shielding part located in the third light-shielding layer; The minimum distance between the sensor opening and the orthographic projection of the adjacent second light-shielding part on the reference plane is not equal to the minimum distance between the sensor opening and the orthographic projection of the adjacent third light-shielding part on the reference plane.

[0013] Optionally, the minimum distance between the sensor opening and the orthographic projection of the adjacent second light-shielding part on the reference plane is the second distance, and the minimum distance between the sensor opening and the orthographic projection of the adjacent third light-shielding part on the reference plane is the third distance, wherein the second distance is greater than the third distance.

[0014] Optionally, the display panel includes a pixel definition layer, the pixel definition layer is provided with the sensor opening, the first light-shielding layer is disposed on the pixel definition layer, the distance between the second light-shielding layer and the pixel definition layer in the thickness direction of the display panel is a second height, and the distance between the third light-shielding layer and the pixel definition layer in the thickness direction is a third height; Where h3 / d3≤h2 / d2, h2 is the second height, h3 is the third height, d2 is the second distance, and d3 is the third distance.

[0015] Optionally, a reference plane is defined as the virtual surface passing through the edge of the sensor opening near the adjacent second light-shielding part and the edge of the second light-shielding part near the adjacent sensor opening, and the edge of the third light-shielding part near the sensor opening is located on the side of the reference plane near the second light-shielding part.

[0016] Optionally, the minimum distance between the sensor opening and the orthographic projection edge of the adjacent first light-shielding part on the reference plane is the first distance, and the minimum distance between the sensor opening and the orthographic projection of the adjacent third light-shielding part on the reference plane is the third distance, wherein the third distance is greater than or equal to the first distance.

[0017] Optionally, the display panel includes a pixel definition layer, the pixel definition layer is provided with the sensor opening, the first light-shielding layer is disposed on the pixel definition layer, the distance between the first light-shielding layer and the pixel definition layer in the thickness direction of the display panel is a first height, and the distance between the third light-shielding layer and the pixel definition layer in the thickness direction is a third height; Where h1 / d1≤h3 / d3, h1 is the first height, d1 is the first distance, and d3 is the third distance.

[0018] Optionally, the orthographic projection of the light-shielding part onto the reference plane is a closed pattern that fully surrounds the corresponding privacy-protecting light-emitting part.

[0019] Optionally, the plurality of privacy-blocking light-emitting parts include a first privacy-blocking light-emitting part, a second privacy-blocking light-emitting part, and a third privacy-blocking light-emitting part, wherein the orthographic projection of the light-blocking part on the reference plane surrounds at least one side of the first privacy-blocking light-emitting part, the second privacy-blocking light-emitting part, and the third privacy-blocking light-emitting part; The first privacy light-emitting part, the second privacy light-emitting part, and the third privacy light-emitting part each emit different colors, and are respectively one of red, green and blue; And / or, adjacent first privacy light-emitting parts, second privacy light-emitting parts and third privacy light-emitting parts constitute a privacy pixel unit; And / or, the light-shielding part has three display openings in its orthogonal projection on the reference plane, the three display openings respectively surrounding the first privacy light-emitting part, the second privacy light-emitting part and the third privacy light-emitting part.

[0020] According to a second aspect of this application, a display device is provided, including a display panel as described above.

[0021] In the display panel of this application embodiment, the display panel and display device include a light-emitting layer and at least two light-shielding layers. The light-emitting layer includes a plurality of privacy-proof light-emitting parts, and each light-shielding layer includes a light-shielding part. The display panel has a plurality of sensor openings. By making the minimum distance between the same sensor opening and the orthographic projection of the adjacent light-shielding parts in the at least two light-shielding layers on the reference plane unequal, the starting angles at which the at least two light-shielding layers block the sensor openings are staggered. This allows some light to pass through the projection gaps between the edges of each layer and be received by the sensor even at a large tilt angle, preventing the light flux from dropping sharply to zero. This improves the overall light flux of the sensor openings of the display panel over a large angle range.

[0022] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of 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.

[0023] To gain a more complete understanding of this application and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings, wherein the same reference numerals in the following description denote the same parts.

[0024] Figure 1 A top view of a display panel provided for an embodiment of this application; Figure 2 An enlarged schematic diagram of point a in the first type of display panel provided for embodiments of this application; Figure 3 A cross-sectional view of a first type of display panel provided for embodiments of this application along the A-A' direction; Figure 4 A cross-sectional view of a first type of display panel provided for an embodiment of this application along the B-B' direction; Figure 5 A cross-sectional view of a second display panel provided for an embodiment of this application along the B-B' direction; Figure 6 An enlarged schematic diagram of point a in the third type of display panel provided for an embodiment of this application; Figure 7 A cross-sectional view along the B-B' direction of a third type of display panel provided for an embodiment of this application; Figure 8 A cross-sectional view of a fourth display panel along the B-B' direction provided for embodiments of this application; Figure 9 A cross-sectional view along the B-B' direction of a fifth type of display panel provided for embodiments of this application; Figure 10 This is a schematic diagram of the structure of a display device provided in an embodiment of this application. Detailed Implementation

[0025] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the protection scope of this application.

[0026] An embodiment of this application provides a display panel, which includes a light-emitting layer and at least two light-shielding layers. The light-emitting layer includes a plurality of privacy-protecting light-emitting parts disposed on the light-emitting side of the light-emitting layer. Each light-shielding layer includes a light-shielding part, and the orthographic projection of the light-shielding part on a reference plane surrounds the orthographic projection of the privacy-protecting light-emitting part on the reference plane. The display panel has a plurality of sensor openings, and the minimum distance between a sensor opening and the orthographic projection of an adjacent light-shielding part in one of the light-shielding layers on the reference plane is not equal to the minimum distance between the same sensor opening and the orthographic projection of at least one other adjacent light-shielding part in at least another light-shielding layer on the reference plane.

[0027] In the embodiments of this application, by making the minimum distance between the same sensor opening and the orthographic projection of adjacent light-shielding parts in at least two light-shielding layers on the reference plane unequal, the starting angles at which the at least two light-shielding layers block the sensor opening are staggered, so that even at a large tilt angle, some light can still pass through the projection gap between the edges of each layer and be received by the sensor, avoiding a sharp drop in light flux to zero, thereby improving the overall light flux of the sensor opening of the display panel over a large angle range.

[0028] Please see Figure 1 , Figure 1 The above view is a top view of a display panel provided in an embodiment of this application. The display panel 100 has a display area AA, which is an area used to display a screen.

[0029] In some embodiments, such as Figure 1 As shown, the display panel 100 also includes a non-display area NA, which is located around the display area AA. The non-display area NA is an area for placing peripheral circuits, which may include, but are not limited to, gate drive circuits.

[0030] Please see Figure 2 and Figure 3 , Figure 2 An enlarged schematic diagram of point a in the first type of display panel provided for an embodiment of this application. Figure 3 A cross-sectional view of a first type of display panel provided in the embodiments of this application along the A-A' direction. The display panel 100 includes a light-emitting layer 1 and at least two light-shielding layers 2. The light-emitting layer 1 includes a plurality of normal pixel units PU1 and privacy pixel units PU2. The normal pixel unit PU1 includes a light-emitting part 11, and the privacy pixel unit PU2 includes a privacy light-emitting part 12.

[0031] The light-shielding layer 2 is disposed on the light-emitting side of the light-emitting layer 1. Each light-shielding layer includes a light-shielding part. The orthographic projection of the light-shielding part on the reference plane surrounds the orthographic projection of the privacy light-emitting part 12 on the reference plane. The reference plane is parallel to the light-emitting surface of the display panel.

[0032] In some embodiments, please refer to Figure 2 The light-emitting layer 1 includes a patterned plurality of light-emitting parts 11 and a plurality of privacy light-emitting parts 12. Each light-emitting part 11 can be regarded as a normal sub-pixel, and each privacy light-emitting part 12 can be regarded as a privacy sub-pixel. The plurality of light-emitting parts 11 and the plurality of privacy light-emitting parts 12 can be arranged in the display area AA according to the existing pixel arrangement.

[0033] In some embodiments, please refer to Figure 2The plurality of light-emitting parts 11 include a first light-emitting part 111, a second light-emitting part 112, and a third light-emitting part 113. The first light-emitting part 111, the second light-emitting part 112, and the third light-emitting part 113 emit different colors, namely red, green, and blue. For example, the first light-emitting part 111 emits green light, the second light-emitting part 112 emits red light, and the third light-emitting part 113 emits blue light. An adjacent first light-emitting part 111, a second light-emitting part 112, and a third light-emitting part 113 can constitute a normal pixel unit PU1.

[0034] In some embodiments, please refer to Figure 2 The plurality of privacy-protecting light-emitting parts 12 include a first privacy-protecting light-emitting part 121, a second privacy-protecting light-emitting part 122, and a third privacy-protecting light-emitting part 123. The first privacy-protecting light-emitting part 121, the second privacy-protecting light-emitting part 122, and the third privacy-protecting light-emitting part 123 emit different colors, namely red, green, and blue. For example, the first privacy-protecting light-emitting part 121 emits green light, the second privacy-protecting light-emitting part 122 emits red light, and the third privacy-protecting light-emitting part 123 emits blue light; or the first privacy-protecting light-emitting part 121 emits green light, the second privacy-protecting light-emitting part 122 emits blue light, and the third privacy-protecting light-emitting part 123 emits red light. An adjacent first privacy-protecting light-emitting part 121, a second privacy-protecting light-emitting part 122, and a third privacy-protecting light-emitting part 123 constitute a privacy-protecting pixel unit PU2.

[0035] In some embodiments, please refer to Figure 2 Multiple normal pixel units PU1 and multiple privacy pixel units PU2 are arranged alternately along the row direction X, and alternately along the column direction Y. The row direction X and column direction Y can be the extension directions of different sides of the display panel 100, with the row direction X perpendicular to the column direction Y. For example... Figure 1 As shown, the row direction X is the direction of the short side of the display panel 100, and the column direction Y is the direction of the long side of the display panel 100.

[0036] In some embodiments, please refer to Figure 2 The first light-emitting part 111 and the first privacy light-emitting part 121 are alternately arranged in the first sub-pixel row along the row direction X. The third light-emitting part 113 and the third privacy light-emitting part 123 are alternately arranged in the second sub-pixel row along the row direction X. The second light-emitting part 112 and the second privacy light-emitting part 122 are alternately arranged in the third sub-pixel row along the row direction X. The first sub-pixel row, the second sub-pixel row and the third sub-pixel row are alternately arranged in the column direction Y. The light-emitting parts and privacy light-emitting parts in two adjacent sub-pixel rows are staggered.

[0037] In some embodiments, please refer to Figure 2The first light-emitting part 111, the second light-emitting part 112, the first privacy light-emitting part 121 and the second privacy light-emitting part 122 are arranged alternately along the second direction Y in the first sub-pixel column. The third light-emitting part 113 and the third privacy light-emitting part 123 are arranged alternately along the second direction Y in the second sub-pixel column. The first sub-pixel column and the second sub-pixel column are arranged alternately along the first direction X. The light-emitting parts and privacy light-emitting parts in two adjacent sub-pixel columns are staggered.

[0038] In the embodiments of this application, the display panel has a privacy mode. The privacy light-emitting part can be a viewing angle control light-emitting part for the privacy mode. The side brightness of the privacy light-emitting part perceived by the user from the side can be less than the front brightness of the privacy light-emitting part perceived by the user from the front. When the privacy mode is not activated, both the light-emitting part 11 and the privacy light-emitting part 12 can emit light; when the privacy mode is activated, the light-emitting part 11 does not emit light, and the privacy light-emitting part 12 emits light, so that the image of the display panel 100 can be well perceived from the front, but not well perceived from the side, achieving the privacy effect and thus protecting the user's privacy.

[0039] In some embodiments, please refer to Figure 3 The display panel includes a substrate and, sequentially stacked on the substrate, a driving circuit layer, an anode layer, a pixel definition layer 3, a light-emitting layer 1, a cathode layer, an encapsulation layer 4, a touch layer 5, a first planarization layer 6, and at least two light-shielding layers 2 disposed on the first planarization layer. It should be noted that the film layer structures of the substrate, driving circuit layer, anode layer, cathode layer, etc., are not shown in the diagram and can be replaced with the film layer structures of existing display panels to achieve the same or similar functions.

[0040] In some embodiments, please refer to Figures 2 to 4 , Figure 4 The first type of display panel provided in this application is a cross-sectional view along the B-B' direction. The display panel 100 has multiple sensor openings 31. The pixel definition layer 3 can be a transparent pixel definition layer or a light-shielding pixel definition layer. Specifically, the light-shielding pixel definition layer can be a black pixel definition layer. The pixel definition layer 3 has multiple pixel openings 32 and multiple sensor openings 31 located in the display area AA. Multiple light-emitting parts 11 and multiple privacy-proof light-emitting parts 12 are respectively disposed in the corresponding pixel openings 32. The sensor openings 31 can be disposed between adjacent pixel openings. The sensor openings 31 are used to provide an optical path channel for an optical sensor disposed on the side of the display surface away from the display panel. The optical sensor can include, but is not limited to, an infrared sensor, a laser sensor, or a camera.

[0041] In some embodiments, please refer to Figure 2In at least one sensor opening 31 and at least two light-shielding portions 21 of at least two light-shielding layers 2, at least two light-shielding portions 21 surround the same privacy light-emitting portion 12 and are adjacent to at least one sensor opening 31, and the minimum distance between the sensor opening 31 and the orthographic projection of the light-shielding portion of one of the light-shielding layers on the reference plane is not equal to the minimum distance between the same sensor opening 31 and the orthographic projection of at least one light-shielding portion of at least another light-shielding layer on the reference plane.

[0042] By making the minimum distance between the same sensor opening 31 and the orthographic projection of at least two light-shielding layers 2 on the reference plane unequal, the starting angles at which the at least two light-shielding layers block the sensor opening are staggered, so that even at a large tilt angle, some light can still pass through the projection gap between the edges of each layer and be received by the sensor, avoiding a sharp drop in light flux to zero, thereby improving the overall light flux of the sensor opening of the display panel over a large angle range.

[0043] In some embodiments, please refer to Figure 2 The light-shielding part 21 forms a closed pattern on the reference plane by projection. The closed pattern forms a fully enclosed structure on the privacy light-emitting part 12 to block the wide-angle light emitted by the privacy light-emitting part 12 in all directions, thereby achieving a 360-degree privacy effect.

[0044] In some embodiments, please refer to Figures 2 to 4 At least two light-shielding layers 2 include a first light-shielding layer 201 and a second light-shielding layer 202, with the second light-shielding layer 202 disposed on the side of the first light-shielding layer 201 away from the light-emitting layer.

[0045] The display panel also includes a second planarization layer 7, a third planarization layer 8, and a fourth planarization layer 9. A first light-shielding layer 201 is disposed on the first planarization layer 6. The second planarization layer 7 and the third planarization layer 8 are stacked sequentially on the first planarization layer 6 and cover the first light-shielding layer 201. A second light-shielding layer 202 is disposed on the third planarization layer 8. The fourth planarization layer 9 is disposed on the third planarization layer 8 and covers the second light-shielding layer 202.

[0046] In some embodiments, please refer to Figure 2 and Figure 4 The light-shielding part 21 includes a first light-shielding part 211 located in the first light-shielding layer 201, and a second light-shielding part 212 located in the second light-shielding layer 202. The orthographic projections of the first light-shielding part 211 and the corresponding second light-shielding part 212 on the reference plane surround the same privacy-protecting light-emitting part. The minimum distance between the sensor opening 31 and the edge of the orthographic projection of the adjacent first light-shielding part 211 on the reference plane is not equal to the minimum distance between the sensor opening 31 and the orthographic projection of the adjacent second light-shielding part 212 on the reference plane.

[0047] In some embodiments, please refer to Figure 2 The first light-shielding layer 201 includes a plurality of first light-shielding parts 211 spaced apart. Each first light-shielding part 211 is provided with three display openings 22. The three display openings 22 respectively surround the first privacy light-emitting part 121, the second privacy light-emitting part 122 and the third privacy light-emitting part 123 in the same privacy pixel unit PU2.

[0048] In some embodiments, the orthographic projections of the light-emitting portion 11 and the privacy light-emitting portion 12 on the reference plane are circular. The outer edge of the portion of the first light-shielding portion 211 corresponding to the portion of the first privacy light-emitting portion 121, the second privacy light-emitting portion 122 and the third privacy light-emitting portion 123 is an outwardly protruding arc shape to adapt to the shape of the display opening 22 and the privacy light-emitting portion 12. The outer edge of the portion of the first light-shielding portion 211 corresponding to the portion between adjacent privacy light-emitting portions is an inwardly concave arc shape to smoothly transition with the outer edge of the portion of the first light-shielding portion 211 corresponding to the privacy light-emitting portion.

[0049] In some embodiments, the first light-shielding layer 201 includes a plurality of spaced-apart first light-shielding portions 211, each first light-shielding portion 211 having only one display opening 22, one display opening 22 surrounding a corresponding privacy light-emitting portion, each privacy pixel unit having three corresponding first light-shielding portions 211, and the three first light-shielding portions 211 in the same privacy pixel unit being spaced apart from each other.

[0050] In some embodiments, please refer to Figure 2 and Figure 3 The minimum distance between the sensor opening 31 and the edge of the orthographic projection of the adjacent first light-shielding part 211 on the reference plane is the first distance d1, and the minimum distance between the sensor opening 31 and the orthographic projection of the adjacent second light-shielding part 212 on the reference plane is the second distance d2. The first distance d1 is less than the second distance d2.

[0051] It should be noted that, compared to the first light-shielding part 211, the second light-shielding part 212 is farther from the sensor opening 31 in the thickness direction of the display panel. By making the distance between the sensor opening 31 and the second light-shielding part 212 greater than the distance between the sensor opening 31 and the first light-shielding part 211, the light incident at a large angle can be prevented from being blocked by the second light-shielding part 212, thereby increasing the overall light flux of the sensor opening of the display panel in the large angle range.

[0052] In some embodiments, please refer to Figure 5 , Figure 5 A cross-sectional view of a second display panel along the B-B' direction provided for embodiments of this application, the structure of which is similar to... Figures 1 to 4The structures of the display panels shown are roughly the same, except that: the distance between the first light-shielding layer 201 and the pixel definition layer 3 in the thickness direction of the display panel is the first height h1, and the distance between the second light-shielding layer 202 and the pixel definition layer 3 in the thickness direction is the second height h2, h1 / d1≤h2 / d2, d1 is the first distance, and d2 is the second distance.

[0053] By making the ratio of the first height h1 to the first distance d1 less than or equal to the ratio of the second height h2 to the second distance d2, and by adjusting the first height h1, the second height h2, the first distance d1, and the second distance d2, the large-angle incident light passing through the second light-shielding part 212 is prevented from being blocked by the first light-shielding part 211, thereby further improving the overall light flux of the sensor opening of the display panel in the large-angle range.

[0054] It should be noted that the distance between the first light-shielding layer 201 and the pixel definition layer 3 in the thickness direction of the display panel is the distance between the side surface of the first light-shielding layer 201 closest to the pixel definition layer 3 and the side surface of the pixel definition layer 3 closest to the first light-shielding layer 201 in the thickness direction of the display panel, and the distance between the second light-shielding layer 202 and the pixel definition layer 3 in the thickness direction of the display panel is the distance between the side surface of the second light-shielding layer 202 closest to the pixel definition layer 3 and the side surface of the pixel definition layer 3 closest to the second light-shielding layer 202 in the thickness direction of the display panel.

[0055] In some embodiments, please refer to Figure 5 The virtual surface of the sensor opening 31 near the adjacent second light-shielding part 212 and the second light-shielding part 212 near the adjacent sensor opening 31 is defined as the reference surface DP. The edge of the first light-shielding part 211 near the sensor opening 31 is located on the side of the reference surface DP near the second light-shielding part 212. This can prevent the large-angle incident light passing through the second light-shielding part 212 from being blocked by the first light-shielding part 211, thereby further improving the overall light flux of the sensor opening of the display panel in the large angle range.

[0056] In some embodiments, please refer to Figure 5 The angle between the reference plane DP and the reference plane SP is the first angle a1, which is less than 45 degrees. For example, the first angle a1 can be 44 degrees, 42 degrees, 40 degrees, 38 degrees, 35 degrees, 33 degrees or 30 degrees, etc. This can prevent the large-angle incident light passing through the second light-shielding part 212 from being blocked by the first light-shielding part 211.

[0057] In some embodiments, please refer to Figure 4The edge of the first light-shielding part 211 near the sensor opening 31 can also be located on the side of the reference plane DP near the sensor opening 31. As long as the first light-shielding part 211 is spaced apart from the sensor opening 31 and does not cover the sensor opening 31, the overall light flux of the sensor opening of the display panel can also be improved over a wide angle range.

[0058] In some embodiments, please refer to Figure 2 and Figure 4 The first light-shielding layer 201 is a film structure formed over the entire surface, and the second light-shielding layer 202 is a patterned film structure. The first light-shielding layer 201 has display openings in the areas corresponding to the light-emitting part 11 and the privacy-protecting light-emitting part 12 to expose them. The first light-shielding layer 201 also has a first light-transmitting opening 23 in the area corresponding to the sensor opening 31. The area of ​​the first light-transmitting opening 23 is larger than the area of ​​the sensor opening 31, and the orthographic projection of the sensor opening 31 onto the reference plane lies within the orthographic projection of the first light-transmitting opening 23 onto the reference plane, thus facilitating the exposure of the sensor opening 31. The first light-shielding part 211 can be considered as the portion of the first light-shielding layer 201 surrounding the privacy-protecting pixel unit PU2 and located between the privacy-protecting pixel unit PU2 and the sensor opening 31. The edge of the first light-shielding part 211 near the sensor opening 31 is the edge of the first light-transmitting opening 23, and the first distance d1 is the minimum distance between the edge of the first light-transmitting opening 23 and the edge of the sensor opening 31.

[0059] In some embodiments, the first light-shielding layer 201 and the second light-shielding layer 202 can both be patterned film structures. The first light-shielding portion 211 and the second light-shielding portion 212 can have the same shape. The edge of the second light-shielding portion 212 is contracted towards the center of the second light-shielding portion 212 relative to the edge of the first light-shielding portion 211, so that the edge of the orthographic projection of the second light-shielding portion 212 on the reference plane is located within the orthographic projection of the first light-shielding portion 211 on the reference plane. This ensures that the minimum distance between the sensor opening 31 and the orthographic projection of the adjacent first light-shielding portion 211 on the reference plane is less than the minimum distance between the sensor opening 31 and the orthographic projection of the adjacent second light-shielding portion 212 on the reference plane, thereby improving the overall light flux of the sensor opening of the display panel over a large angle range.

[0060] Please see Figure 6 and Figure 7 , Figure 6 An enlarged schematic diagram of point a in the third type of display panel provided for an embodiment of this application. Figure 7 A cross-sectional view of a third type of display panel provided in an embodiment of this application along the B-B' direction, the structure of which is similar to... Figures 1 to 4 The display panels shown have roughly the same structure, the difference being: The display panel also includes a third light-shielding layer 203, which is disposed between the first light-shielding layer 201 and the second light-shielding layer 202, and at least two light-shielding portions include a third light-shielding portion 213 located in the third light-shielding layer 203.

[0061] In some embodiments, please refer to Figure 6 The third light-shielding layer 203 includes a plurality of patterned third light-shielding parts 213, each of which has three display openings. The three display openings respectively surround the first privacy light-emitting part 121, the second privacy light-emitting part 122 and the third privacy light-emitting part 123 in the same privacy pixel unit PU2.

[0062] In some embodiments, the orthographic projections of the light-emitting portion 11 and the privacy light-emitting portion 12 on the reference plane are circular. The outer edge of the portion of the third light-shielding portion 213 corresponding to the portion of the first privacy light-emitting portion 121, the second privacy light-emitting portion 122, and the third privacy light-emitting portion 123 is an outwardly protruding arc shape to adapt to the shape of the display opening and the privacy light-emitting portion 12. The outer edge of the portion of the third light-shielding portion 213 corresponding to the portion between adjacent privacy light-emitting portions is an inwardly concave arc shape to smoothly transition with the outer edge of the portion of the third light-shielding portion 213 corresponding to the privacy light-emitting portion.

[0063] In some embodiments, the minimum distance between the sensor opening 31 and the orthographic projection of the adjacent second light-shielding part 212 on the reference plane is not equal to the minimum distance between the sensor opening 31 and the orthographic projection of the adjacent third light-shielding part 213 on the reference plane. By making the minimum distances between the same sensor opening 31 and the orthographic projections of adjacent light-shielding parts in the light-shielding layers of the adjacent second light-shielding part 212 and third light-shielding part 213 unequal on the reference plane, the starting angles at which at least the second and third light-shielding parts block the sensor opening are staggered from each other. This allows some light to pass through the projection gaps between the edges of each layer and be received by the sensor even at larger tilt angles, preventing the light flux from plummeting to zero. This improves the overall light flux of the sensor opening of the display panel over a wide angle range.

[0064] Please see Figure 6 and Figure 7 The minimum distance between the sensor opening 31 and the orthographic projection of the adjacent second light-shielding part 212 on the reference plane is the second distance d2, and the minimum distance between the sensor opening 31 and the orthographic projection of the adjacent third light-shielding part 213 on the reference plane is the third distance d3. The second distance d2 is greater than the third distance d3. In this way, light incident at large angles can be prevented from being blocked by the second light-shielding part 212, thereby improving the overall luminous flux of the sensor opening of the display panel over a large angle range.

[0065] In some embodiments, please refer to Figure 7The third distance d3 is greater than the first distance d1. The edge of the third light-shielding part 213 near the sensor opening 31 is contracted towards the center of the third light-shielding part 213 relative to the edge of the first light-shielding part 211 near the sensor opening 31. That is, the outer edge of the third light-shielding part 213 on the side near the sensor opening 31 of the orthogonal projection on the reference plane is located within the orthogonal projection of the first light-shielding layer 201 on the reference plane. This can prevent large-angle incident light from being blocked by the third light-shielding part 213.

[0066] In some embodiments, the third distance d3 is equal to the first distance d1, that is, the edge of the third light-shielding part 213 near the sensor opening 31 is flush with the edge of the first light-shielding part 211 near the sensor opening 31.

[0067] In some embodiments, please refer to Figure 6 The second light-shielding part 212 and the third light-shielding part 213 can have the same shape. The edge of the second light-shielding part 212 is narrowed towards the center of the second light-shielding part 212 relative to the edge of the third light-shielding part 213, so that the edge of the orthographic projection of the second light-shielding part 212 on the reference plane is located within the orthographic projection of the third light-shielding part 213 on the reference plane. This ensures that the minimum distance between the sensor opening 31 and the orthographic projection of the adjacent first light-shielding part 211 on the reference plane is less than the minimum distance between the sensor opening 31 and the orthographic projection of the adjacent third light-shielding part 213 on the reference plane, thereby improving the overall light flux of the sensor opening of the display panel in a large angle range.

[0068] In some embodiments, the third light-shielding layer 203 includes a plurality of spaced-apart first light-shielding portions 211, each third light-shielding portion 213 may have only one display opening, one display opening surrounds a corresponding privacy light-emitting portion, each privacy pixel unit has three corresponding third light-shielding portions 213, and the three third light-shielding portions 213 in the same privacy pixel unit are spaced apart from each other.

[0069] In some embodiments, the first light-shielding layer 201 is a film structure that is disposed on the entire surface as described in the foregoing embodiments, and the second light-shielding layer 202 and the third light-shielding layer 203 are both patterned film structures.

[0070] In some embodiments, please refer to Figure 8 , Figure 8 A cross-sectional view of a fourth display panel along the B-B' direction provided in the embodiments of this application, the structure of which is similar to... Figure 7 The structures of the display panels shown are roughly the same, except that the distance between the third light-shielding layer 203 and the pixel definition layer 3 in the thickness direction is the third height h3, and h3 / d3≤h2 / d2.

[0071] By making the ratio of the third height h3 to the third distance d3 less than or equal to the ratio of the second height h2 to the second distance d2, and by adjusting the second height h2, the third height h3, the second distance d2, and the third distance d3, the large-angle incident light passing through the second light-shielding part 212 is prevented from being blocked by the third light-shielding part 213, thereby further improving the overall light flux of the sensor opening of the display panel in the large-angle range.

[0072] In some embodiments, please refer to Figure 8 The edge of the third light-shielding part 213 near the sensor opening 31 is located on the side of the reference plane DP near the second light-shielding part 212. This can prevent the large-angle incident light passing through the second light-shielding part 212 from being blocked by the third light-shielding part 213, thereby further improving the overall light flux of the sensor opening of the display panel in the large-angle range.

[0073] In some embodiments, the edge of the third light-shielding part 213 near the sensor opening 31 can also be located on the side of the reference plane DP near the sensor opening 31. As long as the third light-shielding part 213 is spaced apart from the sensor opening 31 and does not cover the sensor opening 31, the overall light flux of the sensor opening of the display panel can also be improved over a wide angle range.

[0074] In some embodiments, the display panel further includes a polarizer disposed on the side of the fourth planarization layer away from the light-emitting layer, which can reduce the reflectivity of ambient light and improve contrast.

[0075] In some embodiments, please refer to Figure 9 , Figure 9 A cross-sectional view along the B-B' direction of the fifth type of display panel provided in the embodiments of this application, the structure of which is similar to... Figure 7 and Figure 8 The structures of the display panels shown are roughly the same, the difference being that the display panel 100 also includes a color filter layer 10, which includes multiple filter parts 101. The first light-shielding layer 201 is provided with multiple display openings, and each filter part 101 is disposed in the corresponding display opening. By utilizing the depolarization structure formed by the first light-shielding layer 201 and the color filter layer 10, ambient light can be absorbed, the reflectivity of ambient light can be reduced, and stray light can be filtered, thereby improving contrast while reducing costs.

[0076] In some embodiments, please refer to Figure 2The plurality of sensor openings 31 include a plurality of first sensor openings 311 and a plurality of second sensor openings 312. The first sensor openings 311 are disposed near the first privacy light-emitting part 121, and the second sensor openings 312 are disposed near the second privacy light-emitting part 122 and the third privacy light-emitting part 123. The embodiments of this application are described using the first sensor opening 311 as an example. The relative positional relationship between the second sensor opening 312 and the adjacent light-shielding part in the light-shielding layer can be set with reference to the first sensor opening 311, and will not be described in detail here.

[0077] In some embodiments, please refer to Figure 2 The minimum distance between the first sensor opening 311 and the orthographic projection of the second light-shielding part 212 corresponding to the nearest privacy light-emitting part on the reference plane is not equal to the minimum distance between the second sensor opening 312 and the second light-shielding part 212 corresponding to the nearest privacy light-emitting part on the reference plane. This allows the first sensor opening 311 and the second sensor opening 312 to be arranged asymmetrically, so that the first sensor opening 311 and the second sensor opening 312 form complementary sensing areas under a wide viewing angle, eliminating the sensing blind zone under a wide viewing angle in a single uniformly arranged sensor opening scheme, thereby improving the overall light flux of the sensor openings over a wide viewing angle.

[0078] In some embodiments, please refer to Figure 2 The minimum distance between the first sensor opening 311 and the second light-shielding part 212 corresponding to the nearest privacy light-emitting part on the reference plane is the first distance d1. The minimum distance between the second sensor opening 312 and the second light-shielding part 212 corresponding to the nearest privacy light-emitting part on the reference plane is the fourth distance d4. The first distance d1 is greater than the fourth distance d4. This allows the first sensor opening 311 to be farther away from the light-shielding part, so that the first sensor opening 311 can obtain more large-angle light and improve the light transmittance of the first sensor opening 311. By making the distance between the second sensor opening 312 and the light-shielding part smaller, it is beneficial to improve the pixel density of the display panel.

[0079] In some embodiments, please refer to Figure 6 When the display panel has three light-shielding layers, the minimum distance between the second sensor opening 312 and the third light-shielding part 213 corresponding to the nearest privacy light-emitting part on the reference plane is the fifth distance d5. The fifth distance d5 is greater than the fourth distance d4, so that the edge of the second light-shielding part 212 on the side of the second sensor opening 312 contracts away from the edge of the third light-shielding part 213 relative to the edge of the second sensor opening 312, so as to avoid the second light-shielding part 212 blocking the light incident at a large angle, thereby improving the transmittance of the second sensor opening 312.

[0080] Based on the display panel provided in the above embodiments of this application, embodiments of this application also provide a display device. Please refer to [link to relevant documentation]. Figure 10 , Figure 10 The diagram below shows the structure of a display device provided in an embodiment of this application. The display device 1000 includes a display panel 100 and a housing 200. The display panel 100 is disposed on the housing 200. The display panel 100 can be any of the display panels provided in the above embodiments and can achieve the same technical effects as the display panels provided in the above embodiments. Further details are omitted here.

[0081] The beneficial effects of the embodiments of this application are as follows: The embodiments of this application provide a display panel and a display device. The display panel includes a light-emitting layer and at least two light-shielding layers. The light-emitting layer includes a plurality of privacy-proof light-emitting parts, and each light-shielding layer includes a light-shielding part. The display panel has a plurality of sensor openings. By making the minimum distance between the same sensor opening and the orthographic projection of the adjacent light-shielding parts in the at least two light-shielding layers on the reference plane unequal, the starting angles at which the at least two light-shielding layers block the sensor openings are staggered. This allows some light to pass through the projection gaps between the edges of each layer and be received by the sensor even at a large tilt angle, preventing the light flux from dropping sharply to zero. This improves the overall light flux of the sensor openings of the display panel over a large angle range.

[0082] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0083] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0084] The embodiments, implementation methods, and related technical features of this application can be combined and substituted for each other without conflict.

[0085] The above are merely preferred embodiments of this application and are not intended to limit this application in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this application without departing from the scope of the technical solution of this application shall still fall within the scope of the technical solution of this application.

Claims

1. A display panel, characterized by, include: The light-emitting layer includes multiple privacy-protecting light-emitting components; At least two light-shielding layers are disposed on the light-emitting side of the light-emitting layer. Each light-shielding layer includes a light-shielding part. The orthographic projection of the light-shielding part on the reference plane surrounds the orthographic projection of the privacy light-emitting part on the reference plane. The reference plane is parallel to the light-emitting surface of the display panel. The display panel has multiple sensor openings, and the minimum distance between the sensor opening and the orthographic projection of an adjacent light-shielding part in one of the light-shielding layers on the reference plane is not equal to the minimum distance between the same sensor opening and the orthographic projection of at least one adjacent light-shielding part in at least another light-shielding layer on the reference plane.

2. The display panel as described in claim 1, characterized in that, The at least two light-shielding layers include: A first light-shielding layer, wherein the light-shielding portion includes a first light-shielding portion located in the first light-shielding layer; The second light-shielding layer is disposed on the side of the first light-shielding layer away from the light-emitting layer, and the light-shielding part includes a second light-shielding part located in the second light-shielding layer; The minimum distance between the sensor opening and the orthographic projection edge of the adjacent first light-shielding part on the reference plane is not equal to the minimum distance between the sensor opening and the orthographic projection of the adjacent second light-shielding part on the reference plane.

3. The display panel as described in claim 2, characterized in that, The minimum distance between the sensor opening and the orthographic projection edge of the adjacent first light-shielding part on the reference plane is the first distance, and the minimum distance between the sensor opening and the orthographic projection of the adjacent second light-shielding part on the reference plane is the second distance, and the first distance is less than the second distance.

4. The display panel as described in claim 3, characterized in that, The display panel includes a pixel definition layer, the pixel definition layer is provided with the sensor opening, the first light-shielding layer is disposed on the pixel definition layer, the distance between the first light-shielding layer and the pixel definition layer in the thickness direction of the display panel is a first height, and the distance between the second light-shielding layer and the pixel definition layer in the thickness direction is a second height; Where h1 / d1≤h2 / d2, h1 is the first height, h2 is the second height, d1 is the first distance, and d2 is the second distance.

5. The display panel as described in claim 2, characterized in that, A reference plane is defined as the virtual surface passing through the edge of the sensor opening near the adjacent second light-shielding part and the edge of the second light-shielding part near the adjacent sensor opening. The edge of the first light-shielding part near the sensor opening is located on the side of the reference plane near the second light-shielding part.

6. The display panel as described in claim 5, characterized in that, The angle between the reference plane and the reference surface is less than 45 degrees.

7. The display panel as described in any one of claims 2 to 6, characterized in that, The at least two light-shielding layers also include: A third light-shielding layer is disposed between the first light-shielding layer and the second light-shielding layer, and the light-shielding part includes a third light-shielding part located in the third light-shielding layer; The minimum distance between the sensor opening and the orthographic projection of the adjacent second light-shielding part on the reference plane is not equal to the minimum distance between the sensor opening and the orthographic projection of the adjacent third light-shielding part on the reference plane.

8. The display panel as described in claim 7, characterized in that, The minimum distance between the sensor opening and the orthographic projection of the adjacent second light-shielding part on the reference plane is the second distance, and the minimum distance between the sensor opening and the orthographic projection of the adjacent third light-shielding part on the reference plane is the third distance. The second distance is greater than the third distance.

9. The display panel as described in claim 8, characterized in that, The display panel includes a pixel definition layer, the pixel definition layer is provided with the sensor opening, the first light-shielding layer is disposed on the pixel definition layer, the distance between the second light-shielding layer and the pixel definition layer in the thickness direction of the display panel is a second height, and the distance between the third light-shielding layer and the pixel definition layer in the thickness direction is a third height; Where h3 / d3≤h2 / d2, h2 is the second height, h3 is the third height, d2 is the second distance, and d3 is the third distance.

10. The display panel as claimed in claim 7, characterized in that, A reference plane is defined as the virtual surface passing through the edge of the sensor opening near the adjacent second light-shielding part and the edge of the second light-shielding part near the adjacent sensor opening. The edge of the third light-shielding part near the sensor opening is located on the side of the reference plane near the second light-shielding part.

11. The display panel as claimed in claim 7, characterized in that, The minimum distance between the sensor opening and the orthographic projection edge of the adjacent first light-shielding part on the reference plane is the first distance, and the minimum distance between the sensor opening and the orthographic projection of the adjacent third light-shielding part on the reference plane is the third distance, wherein the third distance is greater than or equal to the first distance.

12. The display panel as claimed in claim 11, characterized in that, The display panel includes a pixel definition layer, the pixel definition layer is provided with the sensor opening, the first light-shielding layer is disposed on the pixel definition layer, the distance between the first light-shielding layer and the pixel definition layer in the thickness direction of the display panel is a first height, and the distance between the third light-shielding layer and the pixel definition layer in the thickness direction is a third height; Where h1 / d1≤h3 / d3, h1 is the first height, d1 is the first distance, and d3 is the third distance.

13. The display panel as claimed in claim 1, characterized in that, The orthographic projection of the light-shielding part onto the reference plane is a closed pattern that fully surrounds the privacy light-emitting part.

14. The display panel as claimed in claim 1, characterized in that, The plurality of privacy-blocking light-emitting parts include a first privacy-blocking light-emitting part, a second privacy-blocking light-emitting part, and a third privacy-blocking light-emitting part, wherein the orthographic projection of the light-blocking part on the reference plane surrounds at least one side of the first privacy-blocking light-emitting part, the second privacy-blocking light-emitting part, and the third privacy-blocking light-emitting part; The first privacy light-emitting part, the second privacy light-emitting part, and the third privacy light-emitting part each emit different colors, and are respectively one of red, green and blue; And / or, adjacent first privacy light-emitting parts, second privacy light-emitting parts and third privacy light-emitting parts constitute a privacy pixel unit; And / or, the light-shielding part has three display openings in its orthogonal projection on the reference plane, the three display openings respectively surrounding the first privacy light-emitting part, the second privacy light-emitting part and the third privacy light-emitting part.

15. A display device, characterized in that, Includes the display panel as described in any one of claims 1 to 14.

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