Touch display panel, display screen, and electronic device

Abstract

The present application provides a touch display panel, comprising a display layer, a touch layer, and a black matrix layer. The display layer comprises a plurality of pixel units arranged in rows and columns, and the plurality of pixel units comprise a plurality of first-type pixel units and second-type pixel units. The touch layer is stacked on the display layer, and comprises a plurality of metal wires arranged in rows and columns, the metal wires intersecting to form light-transmitting regions. The black matrix layer is stacked on the touch layer, the black matrix layer and the metal wires of the touch layer shield some of light exit paths of the first-type pixel units, thereby limiting a display viewing angle range of the first-type pixel units. The present application further provides a display screen and an electronic device, which can effectively achieve the privacy protection effect.

Description

Touch display panels, displays and electronic devices

[0001] This application claims priority to the invention patent application filed on December 23, 2024, with application number "2024119128053" and title "Touch Display Panel, Display Screen and Electronic Device". Technical Field

[0002] This application relates to the field of displays, and more particularly to a touch display panel and a display screen and electronic device having said touch display panel. Background Technology

[0003] Currently, with the development of technology, the functions of mobile phones and other electronic devices are becoming increasingly rich, and people are becoming more and more dependent on them in their daily lives. Due to various needs, people often use mobile phones and other electronic devices in crowded places. However, in situations with many people around, the content displayed on these devices can be seen by others, exposing privacy. Privacy screen protectors are now available on the market. These protectors are applied to mobile phones and other electronic devices to prevent others from peeping and to protect personal privacy. However, privacy screen protectors are based on the principle of venetian blinds, blocking some light. For example, their transmittance is low, only about 70% when viewing the screen directly. This results in a decrease in display brightness under the same luminous intensity of the electronic device. To increase display brightness, the phone's own luminous intensity must be increased, leading to increased luminous power and worsened power consumption. Furthermore, privacy screen protectors often have poor clarity, with noticeable graininess, making screen text blurry and affecting the user's viewing experience. Additionally, the thickness of the privacy screen protector can cause fingerprint recognition to fail, resulting in low fingerprint recognition efficiency and often requiring multiple attempts to succeed, impacting the user experience of unlocking and making payments with fingerprint recognition. Summary of the Invention

[0004] This application provides a touch display panel, a display screen, and an electronic device to solve the above-mentioned problems.

[0005] In a first aspect, a touch display panel is provided, comprising a display layer, a touch layer, and a black matrix layer. The display layer includes a plurality of pixel units arranged in rows and columns, the plurality of pixel units including a plurality of first-type pixel units and a plurality of second-type pixel units. The touch layer is stacked on the display layer, and the touch layer includes a plurality of metal traces arranged in rows and columns. The black matrix layer is stacked on the touch layer, wherein the black matrix frame and the metal traces of the touch layer partially block the light emission paths of the first-type pixel units, thereby limiting the display viewing angle range of the first-type pixel units, wherein the display viewing angle range of the first-type pixel units is smaller than the display viewing angle range of the second-type pixel units.

[0006] Secondly, a display screen is provided, comprising a glass cover and a touch display panel. The touch display panel includes a display layer, a touch layer, and a black matrix layer. The display layer includes a plurality of pixel units arranged in rows and columns, comprising a plurality of first-type pixel units and a plurality of second-type pixel units. The touch layer is stacked on the display layer and includes a plurality of metal traces arranged in rows and columns. The black matrix layer is stacked on the touch layer, wherein the black matrix frame and the metal traces of the touch layer partially block the light emission paths of the first-type pixel units, thereby limiting the display viewing angle range of the first-type pixel units, wherein the display viewing angle range of the first-type pixel units is smaller than that of the second-type pixel units.

[0007] Thirdly, an electronic device is also provided, comprising a display screen, the display screen including a glass cover and a touch display panel. The touch display panel includes a display layer, a touch layer, and a black matrix layer. The display layer includes a plurality of pixel units arranged in rows and columns, the plurality of pixel units including a plurality of first-type pixel units and a plurality of second-type pixel units. The touch layer is stacked on the display layer, the touch layer including a plurality of metal traces arranged in rows and columns. The black matrix layer is stacked on the touch layer, wherein the black matrix frame and the metal traces of the touch layer block part of the light emission path of the first-type pixel units, thereby limiting the display viewing angle range of the first-type pixel units, wherein the display viewing angle range of the first-type pixel units is smaller than the display viewing angle range of the second-type pixel units. Attached Figure Description

[0008] To more clearly illustrate the technical solutions in the embodiments of this application or the background art, the accompanying drawings used in the embodiments of this application or the background art will be described below.

[0009] Figure 1 is a schematic diagram showing the stacking of some partial structures of a touch display panel in one embodiment of this application.

[0010] Figure 2 is a schematic diagram of the light emission path of the touch display panel in some embodiments of this application.

[0011] Figure 3 is a planar schematic diagram of the black matrix layer of the touch display panel in some embodiments of this application.

[0012] Figure 4 is a plan view of the display layer of a touch display panel in some embodiments of this application.

[0013] Figure 5 is a further planar schematic diagram of the black matrix layer of the touch display panel in some embodiments of this application.

[0014] Figure 6 is a further planar schematic diagram of the black matrix layer of the touch display panel in some embodiments of this application.

[0015] Figure 7 is a plan view of the touch layer of the touch display panel in some embodiments of this application.

[0016] Figure 8 is a schematic diagram showing the stacking of multiple layers in a touch display panel according to some embodiments of this application.

[0017] Figure 9 is another planar schematic diagram of the display layer of the touch display panel in some embodiments of this application.

[0018] Figure 10 is a partial top view illustrating a portion of the structure of a touch display panel in some embodiments of this application.

[0019] Figure 11 is a schematic diagram of the stacking of displays in some embodiments of this application.

[0020] Figure 12 is a plan view of an electronic device in some embodiments of this application.

[0021] Figure 13 is a schematic diagram comparing the brightness attenuation curves of an electronic device and a reference electronic device in some embodiments of this application.

[0022] Figure 14 is a structural block diagram of an electronic device in some embodiments of this application. Detailed Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] In the description of the embodiments of this invention, it should be understood that the terms "upper," "lower," "thickness," "width," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not imply or indicate that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. The term "connection" in this application includes physical structural connection, electrical connection, direct connection, or indirect connection, etc., and can be specifically determined according to the required connection situation. In the description of the embodiments of this invention, the terms "first," "second," etc., are not specific, but are used to distinguish objects with the same name. Where there is a specification, the objects with the same name referred to by the terms "first," "second," etc., may be the same objects.

[0025] Please refer to Figure 1, which is a schematic diagram showing the stacked structure of a partial part of the touch display panel 100 in one embodiment of this application. As shown in Figure 1, the touch display panel 100 includes a display layer 1, a touch layer 2, and a black matrix layer 3. The display layer 1 includes a plurality of pixel units 11 arranged in rows and columns, each pixel unit 11 including a plurality of first-type pixel units 12 and a plurality of second-type pixel units 13. The touch layer 2 is stacked on the display layer 1. The black matrix frame 31 and the metal traces 21 of the touch layer 2 partially block the light emission path of the first-type pixel units 12, thus limiting the display viewing angle range of the first-type pixel units 12. The display viewing angle range of the first-type pixel units 12 is smaller than that of the second-type pixel units 13.

[0026] Therefore, the touch display panel 100 of this application, by using the metal traces 21 of the black matrix layer 3 and the touch layer 2 to block part of the light emission path of the first type of pixel unit 12, limits the display viewing angle range of the first type of pixel unit 12, thereby making the display viewing angle range of the first type of pixel unit 12 smaller than that of the second type of pixel unit 13. Thus, the touch display panel 100 can emit light and display only through the first type of pixel unit 12 when needed. Since the display viewing angle range of the first type of pixel unit 12 is small, a better privacy protection effect can be achieved. Furthermore, in this application, by using the metal traces 21 of the black matrix layer 3 and the touch layer 2 to block part of the light emission path of the first type of pixel unit 12, a larger range of blocking can be achieved, effectively improving the privacy protection effect.

[0027] In this application, the display layer 1 includes a plurality of pixel units 11 arranged in rows and columns. Each pixel unit 11 includes a plurality of first-type pixel units 12 and a plurality of second-type pixel units 13. Thus, the plurality of first-type pixel units 12 and the plurality of second-type pixel units 13 are arranged in an array, i.e., distributed in various areas of the display layer 1. Therefore, when the touch display panel 100 emits light only through the first-type pixel units 12 when needed, the user can normally view the displayed content of the touch display panel 100 within the display viewing angle range of the first-type pixel units 12.

[0028] In this application, the statement that the display viewing angle range of the first type of pixel unit 12 is smaller than that of the second type of pixel unit 13 can mean that the display viewing angle range of the first type of pixel unit 12 is a portion of the display viewing angle range of the second type of pixel unit 13.

[0029] In this application, layer "A" is stacked on top of layer "B". This includes situations where layer "A" and layer "B" are in direct contact and directly stacked on top of layer "B". It also includes situations where layer "C" is disposed between layer "A" and layer "B", allowing layer "C" to be indirectly stacked on top of layer "B". In this application, "above" or "above a certain layer" refers to the side of that layer facing the light-emitting surface of the touch display panel 100. In this application, the areas of each layer of the touch display panel 100 are approximately the same; that is, the projections of each layer of the touch display panel 100 along the stacking direction approximately overlap, forming a multi-layered touch display panel 100.

[0030] In some embodiments, as shown in FIG1, the light-emitting port K1 of the plurality of pixel units 11 faces the touch layer 2, and the angle between the display viewing angle within the display viewing angle range of each pixel unit 11 and the normal L1 direction of the light-emitting port K1 is included, wherein the display viewing angle within the display viewing angle range of each pixel unit 11 includes a 0° viewing angle.

[0031] That is, in some embodiments, the display viewing angle range of the pixel unit 11, namely the first type of pixel unit 12 or the second type of pixel unit 13, is the range of angles including 0° with the normal L1 of the plane where the light outlet K1 of the pixel unit 11 is located, that is, the viewing angle range including the viewing angle in the direction of the normal L1. For example, as shown in FIG1, the display viewing angle range of the first type of pixel unit 12 includes the viewing angle within the angle θ1 less than or equal to the normal L1, and the display viewing angle range of the second type of pixel unit 13 includes the viewing angle less than or equal to θ0 with the angle of the normal L1.

[0032] The surface where the light-emitting port K1 of the pixel unit 11 is located is the display surface or light-emitting surface of the display layer 1. The direction of the normal L1 of the light-emitting port K1 of the pixel unit 11 can also refer to the direction that is perpendicular to the display surface of the display layer 1 and faces the display surface.

[0033] In some embodiments, the display viewing angle within the display viewing angle range of each pixel unit 11 can specifically be the angle between the unobstructed emitted light rays of the pixel unit 11 and the normal L1 direction of the light outlet K1. That is, the display viewing angle range of each pixel unit 11 is the angle range formed by the angles between all emitted light rays of the pixel unit 11 that are not obstructed by the black matrix layer 3 and the touch layer 2 and the normal L1.

[0034] The display viewing angle range of the pixel unit 11 is the visible viewing angle range that can be seen by the viewer, that is, the visible viewing angle range when the viewer looks directly at the display surface of the touch display panel 100. When the viewer is directly in front of the touch display panel 100 and the direction of their line of sight is parallel to the normal L1, the user's viewing angle and display viewing angle are 0°, and the content displayed on the touch display panel 100 can be clearly seen by the user. When the user looks at the touch display panel 100 from the side, the user's viewing angle is the angle between the user's line of sight to the position of the pixel unit 11 and the normal L1. When the user's viewing angle is outside the display viewing angle range of the pixel unit 11, the user's eyes cannot receive the emitted light from the pixel unit 11, and therefore cannot see the display content at the position of the corresponding pixel unit 11. Therefore, by limiting the display viewing angle of the first type of pixel unit 12 to a small range, and controlling only the first type of pixel unit 12 to emit light as needed, it is possible to effectively ensure that the display content of the touch display panel 100 cannot be viewed from an angle exceeding a certain range from the side, thus effectively achieving privacy protection.

[0035] Please refer to Figure 2, which is a schematic diagram of the light emission path of the touch display panel 100 in some embodiments of this application.

[0036] As shown in Figure 2, each pixel unit 11 emits light rays from the light-emitting port in various directions to form multiple light-emitting paths L2. In some embodiments, the black matrix layer 3 blocks part of the light-emitting paths L2 of the first type of pixel unit 12, thus covering a first preset viewing angle range of the first type of pixel unit 12. The metal traces 21 of the touch layer 2 block part of the light-emitting paths of the first type of pixel unit 12, thus covering a second preset viewing angle range of the first type of pixel unit 12. The first preset viewing angle range and the second preset viewing angle range at least coincide at their boundaries. The viewing angles in both the first and second preset viewing angle ranges are angles with the normal direction L1 of the light-emitting port K1, that is, the angles between the emitted light rays of the pixel unit 11 and the normal direction L1 of the light-emitting port K1.

[0037] Wherein, the first preset viewing angle interval and the second preset viewing angle interval are the range between one viewing angle greater than 0° and another viewing angle.

[0038] Therefore, in some embodiments, the first preset viewing angle range of the first type of pixel unit 12 is covered by the black matrix layer 3 blocking part of the light emission path L2 of the first type of pixel unit 12, and the second preset viewing angle range of the first type of pixel unit 12 is covered by the metal trace 21 of the touch layer 2 blocking part of the light emission path of the first type of pixel unit 12, and the first preset viewing angle range and the second preset viewing angle range at least overlap at their boundaries. Thus, a wider viewing angle range of the first type of pixel unit 12 can be covered, so that the touch display panel 100 can only see the display content of the first type of pixel unit 12 within the corresponding display viewing angle range.

[0039] In some embodiments, the black matrix layer 3 and the metal traces 21 of the touch layer 2 block part of the light emission path of the first type of pixel unit 12. Alternatively, the black matrix layer 3 and the metal traces 21 of the touch layer 2 may work together to block part of the light emission path of the first type of pixel unit 12. For example, the first preset viewing angle range and the second preset viewing angle range at least overlap in boundary. Therefore, they work together to form a continuous blocking viewing angle range, ensuring that the touch display panel 100 can only display content of the first type of pixel unit 12 within the corresponding viewing angle range.

[0040] In this application, compared to simply using the black matrix layer 3 for occlusion, the combination of the black matrix layer 3 and the metal trace 21 can block a wider viewing area and achieve a better anti-spy effect.

[0041] In this application, multiple rows and columns of metal traces 21 intersect to form a light-transmitting area Q1, allowing light from the pixel unit 11 to pass through.

[0042] In some embodiments, as shown in FIG1, the black matrix layer 3 includes a plurality of black matrix frames 31, each black matrix frame 31 corresponding to a first type of pixel unit 12, and the projection on the display layer 1 surrounds the corresponding first type of pixel unit 12.

[0043] In some embodiments, the black matrix layer 3 has a plurality of through holes distributed thereon, each through hole corresponding to each first type pixel unit 12, and a portion of the light from the first type pixel unit 12 is emitted through the corresponding through hole. That is, in some embodiments, the black matrix layer 3 may also be a full-layer black masking layer, and the black matrix layer 3 has a plurality of through holes distributed thereon, each through hole corresponding to each first type pixel unit 12. In some embodiments, the structure in which the black matrix layer 3 has a plurality of through holes distributed thereon can also be understood as including the black matrix frame 31. In this case, the plurality of black matrix frames 31 may be frames formed by the black matrix layer 3 around the area of ​​the through holes.

[0044] In this application, the black matrix layer 3 mainly includes multiple black matrix frames 31. In some embodiments, the black matrix layer 3 may only include the black matrix frames 31 that are projected onto the display layer 1 and surround the corresponding first type of pixel unit 12. That is, in some embodiments, the black matrix layer 3 and the metal traces 21 of the touch layer 2 block part of the light emission path of the first type of pixel unit 12. This can refer to the black matrix frames 31 of the black matrix layer 3 and the metal traces 21 of the touch layer 2 blocking part of the light emission path of the first type of pixel unit 12.

[0045] Regardless of whether the black matrix layer 3 has multiple through holes distributed on it and each through hole corresponds to each first type pixel unit 12, or the black matrix layer 3 includes multiple black matrix frames 31, the black matrix layer 3 forms a light-transmitting area Q2 corresponding to the first type pixel unit 12 as shown in FIG1. ​​The light-transmitting area Q2 is the area corresponding to each through hole or the area formed by the black matrix frames 31.

[0046] Since the projection of the black matrix frame 31 onto the display layer 1 surrounds the corresponding first type of pixel unit 12, the black matrix frame 31 also forms a light-transmitting area Q2 to allow light from the first type of pixel unit 12 to pass through further. Therefore, for the first type of pixel unit 12, the light emitted from the first type of pixel unit 12 at a small angle with the normal L1 can pass through the light-transmitting area Q1 formed by the intersection of multiple row-and-column distributed metal traces 21 on the touch layer 2 and the light-transmitting area Q2 formed by the black matrix frame 31. Furthermore, the black matrix frame 31 and the metal traces 21 of the touch layer 2 can block the light emitted at a larger angle, which is beneficial for privacy protection.

[0047] In some embodiments, in this application, the normal L1 of the pixel unit 11 can be regarded as the center line of the light emission port of the pixel unit 11. Since the pixel unit 11 is small, in this application, the pixel unit 11 is regarded as a point light source, and the emitted light of the pixel unit 11 is emitted towards the touch layer 2 in a direction parallel to or at an angle to the normal L1.

[0048] Figures 1 and 2 only show partial structures, and only show partial structures of some layers. In Figures 1 and 2, only one first type pixel unit 12 and one second type pixel unit are shown, and the first type pixel unit 12 and the second type pixel unit are arranged adjacent to each other.

[0049] In some embodiments, at least a portion of the viewing angles in the first preset viewing angle range are smaller than the viewing angles in the second preset viewing angle range.

[0050] That is, in some embodiments, as shown in Figures 1 and 2, since the touch layer 2 is disposed on the display layer 1, and the black matrix layer 3 is disposed on the touch layer 2, the distance between the black matrix layer 3 and the display layer 1 will be greater than the distance between the touch layer 2 and the display layer 1. Furthermore, the multiple row-and-column distributed metal traces 21 on the touch layer 2 intersect to form a light-transmitting area Q1, allowing light from the pixel unit 11 to pass through. Therefore, the projection of the metal traces 21 on the touch layer 2 onto the display layer 1 will surround each pixel unit 11, that is, it will also surround the first type of pixel unit 12. Since the projection of the black matrix frame 31 onto the display layer 1 surrounds the corresponding first-type pixel unit 12, the projection of the metal trace 21 on the display layer 1 and the projection of the black matrix frame 31 of the black matrix layer 3 onto the display layer 1 will at least partially overlap. That is, as shown in Figures 1 and 2, the distances between the side of the metal trace 21 closest to the normal L1 and the side of the black matrix frame 31 closest to the normal L1 and the normal L1 of the first-type pixel unit 12 are approximately equal. Therefore, the black matrix frame 31 of the black matrix layer 3 is more suitable for blocking emitted light with a relatively smaller viewing angle than the metal trace 21 on the touch layer 2.

[0051] Therefore, in this application, by using the black matrix frame 31 to block part of the light emission path L2 of the first type of pixel unit 12, a first preset viewing angle range with a smaller viewing angle is covered. The metal traces 21 of the touch layer 2 block part of the light emission path of the first type of pixel unit 12, thus covering a second preset viewing angle range with a larger viewing angle. This allows for more efficient use of the layout of the metal traces 21 in the touch layer 2. Furthermore, by combining the black matrix frame 31 with the metal traces 21, the width of the black matrix frame 31 can be smaller, and both the metal traces 21 and the black matrix frame 31 can be positioned as close as possible to the first type of pixel unit 12. Therefore, for example, as shown in Figures 1 and 2, when the pixel unit 11 adjacent to the first type of pixel unit 12 is the second type of pixel unit 13, the second type of pixel unit 13 will be less obstructed by the black matrix frame 31 and the metal traces 21, which is beneficial for improving the display viewing angle range of the second type of pixel unit 13.

[0052] Figures 1 and 2 are specifically cross-sectional schematic diagrams taken along a target direction of the touch display panel 100. The display viewing angle range of the first type of pixel unit 12 includes the viewing angle range to the left and right of the normal L1 shown in Figures 1 and 2, thereby forming a roughly symmetrical viewing angle range centered on the normal L1. For example, as shown in Figure 2, the display viewing angle range of the first type of pixel unit 12 includes a viewing angle range from 0° to θ1. The 0° viewing angle coincides with the direction of the normal L1, and the display viewing angle range on one side of the target direction is 0° to θ1, while the display viewing angle range on the other side of the target direction is also 0° to θ1; that is, the display viewing angle ranges on both sides of the target direction are the same. In some embodiments, the display viewing angle range on one side of the first type of pixel unit 12 in the target direction may also be different from the display viewing angle range on the other side of the target direction. In some embodiments, the display viewing angle range of the second type of pixel unit 13 includes a viewing angle range from 0° to θ0. The display viewing angle range of the second type of pixel unit 13 on one side of the target direction may be the same as the display viewing angle range on the other side of the target direction, for example, both being a viewing angle range from 0° to θ0. Alternatively, they may be different, for example, only the display viewing angle range on the left side shown in Figures 1 and 2 is 0° to θ0, while the right side may not be the first type of pixel unit 12 and does not have a corresponding black matrix frame 31. The display viewing angle range on the right side may be larger.

[0053] Figure 2 illustrates the frame edges 310 of the black matrix frame 31. As shown in Figure 2, each frame edge 310 of the black matrix frame 31 includes a first end 31a close to the normal L1 of the first type of pixel unit 12 and a second end 31b away from the normal L1. The width of the frame edge 310 of the black matrix frame 31, that is, the distance between the first end 31a and the second end 31b of the frame edge 310, satisfies the condition that the angle θ2 between the line L11 connecting the first end 31a and the light outlet K1 and the line L12 connecting the second end 31b and the light outlet K1 is within the angle range covered by the first preset viewing angle range.

[0054] In some embodiments, as shown in FIG2, the metal trace 21 of the touch layer 2 is located in the line L12 connecting the second end 31b of the frame edge 310 of the black matrix frame 31 and the light outlet K1. The metal trace 21 also includes a first end 21a and a second end 21b along the width direction. The first end 21a is close to the normal L1. For example, the first end 21a of the metal trace 21, or a non-end position, close to the normal L1 can be located in the line L12, thereby cooperating with the black matrix frame 31 to form continuous occlusion, so that the first preset viewing angle range and the second preset viewing angle range at least coincide at their boundaries.

[0055] As shown in Figure 2, the distance between the first end 21a and the second end 21b of the metal trace 21 of the touch layer 2, which is close to the normal L1, satisfies the condition that the angle θ3 between the line L13 connecting the first end 21a and the light outlet K1 and the line L14 connecting the second end 21b and the light outlet K1 is within the angle range covered by the second preset viewing angle range.

[0056] In Figure 2, the first end 21a of the metal trace 21, which is close to the normal line L1, is located at the connecting line L12. At this time, the connecting line L12 between the second end 31b and the light outlet K1 and the connecting line L13 between the first end 21a and the light outlet K1 coincide.

[0057] In this application, the width of the metal trace 21, that is, the distance between the first end 21a and the second end 21b near the normal L1, is not limited. The width of the black matrix frame 31, that is, the distance between the first end 31a and the second end 31b of the frame edge 310 of the black matrix frame 31, is also not limited, as long as it can cover the corresponding preset viewing angle range.

[0058] In some embodiments, the black matrix layer 3 is provided only at the position corresponding to the first type of pixel unit 12. That is, in some embodiments, the black matrix layer 3 only includes the black matrix frame 31 that projects onto the display layer 1 and surrounds the first type of pixel unit 12, while the second type of pixel unit 13 is not provided with the corresponding black matrix frame 31. This ensures that while limiting the display viewing angle range of the first type of pixel unit 12, it is also beneficial to increase the display viewing angle range of the second type of pixel unit 13.

[0059] Please refer to Figure 3, which is a planar schematic diagram of the black matrix layer 3 of the touch display panel 100 in some embodiments of this application.

[0060] Figure 3 is a top view of the black matrix layer 3 from the side opposite to the display layer 1. The first type of pixel unit 12 and the second type of pixel unit 13 are also indicated by dashed lines in Figure 3.

[0061] As shown in Figure 3, in some embodiments, the black matrix frame 31 is provided only at the position corresponding to the first type of pixel unit 12. That is, the projection of each black matrix frame 31 of the black matrix layer 3 onto the display layer 1 only surrounds the corresponding first type of pixel unit 12.

[0062] As shown in Figure 3, due to the arrangement of adjacent first-type pixel units 12 and second-type pixel units 13, although the projection of each black matrix frame 31 of the black matrix layer 3 onto the display layer 1 only surrounds the corresponding first-type pixel unit 12, the projection of part of the frame edge 310 of the black matrix frame 31 onto the display layer 1 will be located between the first-type pixel unit 12 and the second-type pixel unit 13, and will also be close to the second-type pixel unit 13 to a certain extent. Therefore, in this application, the width of the frame edge 310 of the black matrix frame 31 can be smaller, and the black matrix frames 31 can be as close as possible to the first-type pixel unit 12. Therefore, when the pixel unit 11 adjacent to the first-type pixel unit 12 is the second-type pixel unit 13, the second-type pixel unit 13 will be less obstructed by the black matrix frame 31, which is beneficial to improving the display viewing angle range of the second-type pixel unit 13. Due to the cooperation of the metal traces 21 of the touch layer 2, even if the width of the frame edge 310 of the black matrix frame 31 becomes smaller, it can still ensure coverage of a wider viewing angle range, thereby achieving the effect of privacy protection.

[0063] Therefore, as shown in Figures 1-2, the light emitted L3 from the second type of pixel unit 13 will be less obstructed, and the display viewing angle of the second type of pixel unit 13 will be larger. Thus, when privacy protection is not required, at least the second type of pixel unit 13 can be controlled to emit light, that is, the second type of pixel unit 13 can be controlled to emit light, or the second type of pixel unit 13 and the first type of pixel unit 12 can be controlled to emit light simultaneously, thereby achieving a better display effect.

[0064] In some embodiments, the width of the frame edge 310 of the black matrix frame 31, that is, the distance between the first end 31a and the second end 31b of the frame edge 310 of the black matrix frame 31 as described above, can be 3 to 5 μm (micrometers), which is about half of the conventional 7 to 10 μm.

[0065] Obviously, as mentioned above, the width of the black matrix frame 31, that is, the distance between the first end 31a and the second end 31b of the frame edge 310 of the black matrix frame 31, can also be other values, as long as it can cover the corresponding preset viewing angle range.

[0066] In some embodiments, the first preset viewing angle range is at least a portion of the viewing angle range between 25° and 42°, and the second preset viewing angle range is at least a portion of the viewing angle range between 40° and 65°.

[0067] That is, in some embodiments, the first preset viewing angle range covered by the black matrix frame 31 blocking part of the light emission path L2 of the first type of pixel unit 12 can be part or all of the viewing angle range within the range of 25° to 42°, and the second preset viewing angle range covered by the metal trace 21 of the touch layer 2 blocking part of the light emission path L2 of the first type of pixel unit 12 can be part or all of the viewing angle range within the range of 40° to 65°, and it is sufficient to ensure that the boundaries of the two at least coincide.

[0068] For example, the first preset viewing angle range can be 30° to 40°, and the second preset viewing angle range can be 40° to 60°; or, the first preset viewing angle range can be 30° to 45°, and the second preset viewing angle range can be 42° to 65°; or, the first preset viewing angle range can be 25° to 42°, and the second preset viewing angle range can be 40° to 65°, and so on.

[0069] In some embodiments, the first preset viewing angle range may be 30° to 42°, and the second preset viewing angle range may be 40° to 60°.

[0070] In this application, “A” to “B” generally refers to the range that is greater than or equal to “A” and less than or equal to “B”.

[0071] Therefore, in some embodiments, with the cooperation of the black matrix frame 31 and the metal trace 21 of the touch layer 2, the light emitted by the first type of pixel unit 12 with the normal L1 at least partially within a range of 25° to 65° can be blocked. Thus, at least a portion of the viewing angle range of the first type of pixel unit 12 within the viewing angle range of 25° to 65° is not visible, while the display viewing angle range of the first type of pixel unit 12 is within the range of 0° to 25°.

[0072] In some embodiments, for viewing angles greater than 65°, the angle between the viewpoint and the normal L1 is already quite large. Generally, it is difficult to clearly see the display content of the touch display panel 100 from an angle greater than 65°. Therefore, in this application, by cooperating with the black matrix frame 31 and the metal traces 21 of the touch layer 2, a viewing angle range of up to 25° to 65° can be covered. This makes the display viewing angle range of the touch display panel 100, that is, the viewing angle range, only within a small viewing angle range, such as 0° to 25°. Therefore, the privacy protection effect can be effectively achieved.

[0073] In some embodiments, the display viewing angle within the aforementioned display viewing angle range includes the viewing angle located on both sides of the normal L1 direction along the row direction, or further includes the viewing angle located on both sides of the normal direction along the column direction.

[0074] That is, in some embodiments, the display viewing angle range of the first type of pixel unit 12 and the display viewing angle range of the second type of pixel unit 13 both include the viewing angle located on both sides of the normal direction along the row direction, that is, the range located on both sides of the normal L1 along the row direction and within a certain angle of the normal L1.

[0075] In some embodiments, Figures 1 and 2 are specifically cross-sectional schematic diagrams taken along the row direction of the touch display panel 100, and as mentioned above, Figures 1 and 2 illustrate two adjacent pixel units 13: a first type of pixel unit 12 and a second type of pixel unit 13. As shown in Figures 1 and 2, and as mentioned above, the display viewing angle range of the first type of pixel unit 12 includes the viewing angle to the left and right of the normal L1 shown in Figures 1 and 2, thus forming a roughly symmetrical viewing angle range centered on the normal L1.

[0076] In this application, the row direction refers to the arrangement direction of each row of pixel units 11 in the plurality of row-column distributed pixel units 11, and also refers to the extension direction of each row of metal traces 21 in the plurality of row-column distributed metal traces 21. In this application, the column direction refers to the arrangement direction of each column of pixel units 11 in the plurality of row-column distributed pixel units 11, and also refers to the extension direction of each column of metal traces 21 in the plurality of row-column distributed metal traces 21.

[0077] In some embodiments, when the touch display panel 100 is applied to an electronic device such as a mobile phone, the row direction of the touch display panel 100 can be the normal holding state of the electronic device such as a mobile phone, for example, the left-right direction when a user holds the electronic device with one hand and normally views the electronic device, while the column direction can be the normal holding state of the electronic device such as a mobile phone, for example, the up-down direction when a user holds the electronic device with one hand and normally views the electronic device, that is, the direction perpendicular to the left-right direction.

[0078] In some embodiments, the row direction may also be the left-right direction of the displayed content when the touch display panel 100 displays the corresponding content and the content is displayed upright. That is, the row direction may not depend on the holding state of the electronic device, but may be the left-right direction of the displayed content / display screen when it is displayed upright in any holding state.

[0079] Therefore, in some embodiments, the aforementioned display viewing angle range includes viewing angles located on both sides of the normal L1 direction along the row direction, which can limit the display viewing angle range of the first type of pixel unit 12 at least in the row direction, thereby enabling privacy protection on both sides, and allowing the user to normally view the display content of the touch display panel 100 within the display viewing angle range on both sides. In some embodiments, when the aforementioned display viewing angle range further includes viewing angles located on both sides of the normal direction along the column direction, the display viewing angle range of the first type of pixel unit 12 can be limited at least in the column direction, thereby enabling privacy protection on both the top and bottom sides, and allowing the user to normally view the display content of the touch display panel 100 within the display viewing angle range on both the top, bottom, and right sides.

[0080] In some embodiments, the display viewing angle range of each pixel unit 11, that is, the display viewing angle range of the first type of pixel unit 12 and the display viewing angle range of the second type of pixel unit 13, may also be the viewing angle located on both sides of the normal direction along any direction of the touch display panel 100. For example, it may include the angle between the emitted light from any unobstructed direction of the pixel unit 11 and the normal direction L1 of the light outlet K1.

[0081] Please refer to Figures 4 and 5 together. Figure 4 is a plan view of the display layer 1 of the touch display panel 100 in some embodiments of this application. Figure 5 is a further plan view of the black matrix layer 3 of the touch display panel 100 in some embodiments of this application.

[0082] In some embodiments, as shown in FIG4, each first type pixel unit 12 includes three first type sub-pixel units 121. As shown in FIG5, each black matrix frame 31 includes at least one black matrix sub-frame 311. Each black matrix sub-frame 311 corresponds to one of the first type sub-pixel units 121 in the corresponding first type pixel unit 12, and the projection on the display layer 1 surrounds the corresponding first type sub-pixel unit 121.

[0083] That is, in some embodiments, each pixel unit 11 may include three sub-pixel units. For example, the first type of pixel unit 12 includes three first type of sub-pixel units 121, and each black matrix frame 31 includes at least one black matrix sub-frame 311. Each black matrix sub-frame 311 corresponds to one of the first type of sub-pixel units 121 in the corresponding first type of pixel unit 12, and the projection on the display layer 1 surrounds the corresponding first type of sub-pixel unit 121.

[0084] In some embodiments, as shown in FIG5, each black matrix frame 31 includes three black matrix sub-frames 311, each black matrix sub-frame 311 corresponds to a first type of sub-pixel unit 121, and the projection on the display layer 1 surrounds the corresponding first type of sub-pixel unit 121, thereby enabling partial occlusion of the light emission path of each first type of sub-pixel unit 121.

[0085] Therefore, in some embodiments, each black matrix frame 31 also includes three black matrix sub-frames 311, each black matrix sub-frame 311 corresponding to a first type of sub-pixel unit 121, and the projection on the display layer 1 surrounds the corresponding first type of sub-pixel unit 121. Thus, the light emission path of each first type of sub-pixel unit 121 can be partially blocked, and the display viewing angle range of each first type of sub-pixel unit 121 can be limited, thereby limiting the display viewing angle range of the first type of pixel unit 12.

[0086] In some embodiments, each pixel unit 11 may include three sub-pixel units. For example, the first type of pixel unit 12 includes three first type of sub-pixel units 121, wherein the first type of sub-pixel unit 121 is the smallest pixel unit. The three first type of sub-pixel units 121 correspond to the three primary colors of red, green and blue. By controlling the light emission of different combinations of the first type of sub-pixel units 121 and / or controlling the light emission brightness of the currently emitting first type of sub-pixel unit 121, different colors can be mixed, so that the first type of pixel unit 12 can present the corresponding color, that is, emit light of the corresponding color.

[0087] In this application, the pixel unit 12 can also be a light-emitting unit. The three sub-pixel units, such as the first type of sub-pixel unit 121, can be three light-emitting elements for emitting different colors of light, such as three OLEDs (Organic Light-Emitting Diodes). By controlling the light emission of different combinations of light-emitting elements in the pixel unit 12 and / or controlling the brightness of the currently emitting light-emitting element, different colors can be mixed, so that the pixel unit 11 can present the corresponding color, that is, emit light of the corresponding color.

[0088] Specifically, the light-emitting port K1 of the aforementioned pixel unit 11 may include the light-emitting ports of the sub-pixel units included in the pixel unit 11. The first type of pixel unit 12 shown in Figures 1 and 2 is actually one of the first type of sub-pixel units 121 corresponding to the black matrix frame 31 within the first type of pixel unit 12.

[0089] Figures 3-5 are merely schematic diagrams and do not represent the actual number or arrangement of pixel units 11 in the touch display panel 100.

[0090] Please refer to Figure 6, which is a further planar schematic diagram of the black matrix layer 3 of the touch display panel 100 in some embodiments of this application.

[0091] In some embodiments, as shown in Figures 5 and 6, the three first-class sub-pixel units 121 include a first-class R (Red) pixel unit 121a, a first-class G (Green) pixel unit 121b, and a first-class B (Blue) pixel unit 121c, with at least the first-class G pixel unit 121b corresponding to a black matrix sub-frame 311.

[0092] That is, in some embodiments, each black matrix frame 31 includes at least one black matrix sub-frame 311 corresponding to the first type G pixel unit 121b, and the projection on the display layer 1 surrounds the corresponding first type G pixel unit 121b.

[0093] In a touch display panel 100, the number of green sub-pixel units, i.e. G-pixel units, is usually the largest, and the size of green sub-pixel units, i.e. G-pixel units, is usually also relatively large. Therefore, limiting the display viewing angle of the first type of pixel unit 12 can also mean limiting the first type of G-pixel unit 121b. When the display viewing angle of the first type of G-pixel unit 121b is limited, many areas will be unviewable when viewed from that viewing angle, resulting in missing or unclear display content, thus achieving the purpose of preventing peeping.

[0094] In Figure 6, the example is given where only the first type of G pixel unit 121b corresponds to a black matrix sub-frame 311, and each black matrix frame 31 only includes the black matrix sub-frame 311 corresponding to the first type of G pixel unit 121b.

[0095] In some embodiments, the first type G pixel unit 121b may correspond to the first type R pixel unit 121a with a black matrix sub-frame 311, or the first type G pixel unit 121b may correspond to the first type B pixel unit 121c with a black matrix sub-frame 311. Alternatively, as shown in FIG5, the first type R pixel unit 121a, the first type G pixel unit 121b, and the first type B pixel unit 121c may all correspond to a black matrix sub-frame 311.

[0096] Please also refer to Figure 7, which is a planar schematic diagram of the touch layer 2 of the touch display panel 100 in some embodiments of this application.

[0097] In some embodiments, as shown in FIG. 4 above, each second type pixel unit 13 also includes three second type sub-pixel units 131. That is, as shown in FIG. 4, each first type pixel unit 12 includes three first type sub-pixel units 121, and each second type pixel unit 13 also includes three second type sub-pixel units 131. As shown in FIG. 7, the multiple row-column distributed metal traces 21 include multiple first metal traces 211 extending along the row direction and spaced apart from each other, and multiple second metal traces 212 extending along the column direction and spaced apart from each other. The multiple first metal traces 211 and multiple second metal traces 212 intersect and enclose to form multiple light-transmitting regions Q1, wherein each light-transmitting region Q1 corresponds to a sub-pixel unit for light emission from the corresponding sub-pixel unit. The area of ​​the light-transmitting region Q1 corresponding to the first type sub-pixel unit 121 is smaller than the area of ​​the light-transmitting region Q1 corresponding to the second type sub-pixel unit 131.

[0098] Therefore, in some embodiments, the area of ​​the light-transmitting region Q1 corresponding to the first type of sub-pixel unit 121 is smaller than the area of ​​the light-transmitting region Q1 corresponding to the second type of sub-pixel unit 131. This allows the first type of sub-pixel unit 121 to be blocked by more light by the row-and-column distributed metal traces 21. Consequently, the display viewing angle range of each first type of sub-pixel unit 121 in the first type of pixel unit 12 is smaller than the display viewing angle range of each corresponding second type of sub-pixel unit 131 in the second type of pixel unit 13, thus ensuring that the display viewing angle range of the first type of pixel unit 12 is smaller than the display viewing angle range of the second type of pixel unit 13.

[0099] In some embodiments, as shown in FIG4, as previously described, the three first-type sub-pixel units 121 include a first-type R-pixel unit 121a, a first-type G-pixel unit 121b, and a first-type B-pixel unit 121c. As shown in FIG4, the three second-type sub-pixel units 131 include a second-type R-pixel unit 131a, a second-type G-pixel unit 131b, and a second-type B-pixel unit 131c. The area of ​​the light-transmitting region Q1 corresponding to the first-type R-pixel unit 121a is smaller than the area of ​​the light-transmitting region Q1 of the second-type R-pixel unit 131a; the area of ​​the light-transmitting region Q1 corresponding to the first-type G-pixel unit 121b is smaller than the area of ​​the light-transmitting region Q1 of the second-type G-pixel unit 131b; and the area of ​​the light-transmitting region Q1 corresponding to the first-type B-pixel unit 121c is smaller than the area of ​​the light-transmitting region Q1 of the second-type B-pixel unit 131c.

[0100] That is, in some embodiments, the area of ​​the light-transmitting region Q1 corresponding to the first type of sub-pixel unit 121 is smaller than the area of ​​the light-transmitting region Q1 corresponding to the second type of sub-pixel unit 131, and the area of ​​the light-transmitting region Q1 corresponding to the first type of sub-pixel unit 121 of a certain color is smaller than the area of ​​the light-transmitting region Q1 of the second type of sub-pixel unit 131 of the same color.

[0101] In general, the sizes of red, green, and blue sub-pixel units are different. For example, the size of red sub-pixel units is often smaller than that of green and blue sub-pixel units. Regardless of the size relationship of these sub-pixel units, as long as the area of ​​the light-transmitting region Q1 corresponding to the first type of sub-pixel unit 121 of a certain color is smaller than the area of ​​the light-transmitting region Q1 of the second type of sub-pixel unit 131 of the same color, the display viewing angle range of the first type of sub-pixel unit 121 of a certain color can be smaller than the display viewing angle range of the second type of sub-pixel unit 131 of the corresponding color, thus ensuring that the display viewing angle range of the first type of pixel unit 12 is smaller than that of the second type of pixel unit 13.

[0102] In some embodiments, as described above, the plurality of first metal traces 211 and the plurality of second metal traces 212 intersect to form a plurality of light-transmitting regions Q1, wherein each light-transmitting region Q1 corresponds to a sub-pixel unit for light emission from the corresponding sub-pixel unit, as shown in FIG7. The plurality of light-transmitting regions Q1 are also generally arranged in a row-column pattern. As shown in FIG7, in some embodiments, the size of the light-transmitting region Q1 corresponding to the first type of sub-pixel unit 121 along the column direction is equal to the size of the light-transmitting region Q1 corresponding to the second type of sub-pixel unit 131 along the column direction, while the size of the light-transmitting region Q1 corresponding to the first type of sub-pixel unit 121 along the row direction is smaller than the size of the light-transmitting region Q1 corresponding to the second type of sub-pixel unit 131 along the row direction.

[0103] That is, in some embodiments, the light-transmitting area Q1 corresponding to the first type of sub-pixel unit 121 may simply have a smaller size along the row direction than the size along the row direction of the light-transmitting area Q1 corresponding to the second type of sub-pixel unit 131, so that the area of ​​the light-transmitting area Q1 corresponding to the first type of sub-pixel unit 121 is smaller than the area of ​​the light-transmitting area Q1 corresponding to the second type of sub-pixel unit 131.

[0104] As mentioned above, the row direction is mainly left and right. Therefore, the multiple first metal traces 211 and multiple second metal traces 212 can make the size of the light-transmitting area Q1 of the first type of sub-pixel unit 121 smaller in the left and right direction, thereby blocking more light from the first type of sub-pixel unit 121 in the left and right direction, and effectively achieving left and right privacy protection.

[0105] Obviously, in some embodiments, the size of the light-transmitting area Q1 of the first type of sub-pixel unit 121 along the column direction may also be smaller than the size of the light-transmitting area Q1 of the second type of sub-pixel unit 131 along the column direction. This allows more light from different angles in the vertical direction of the first type of sub-pixel unit 121 to be blocked, effectively achieving vertical privacy protection.

[0106] In some embodiments, when the size of the light-transmitting area Q1 corresponding to the first type of sub-pixel unit 121 along the column direction is also smaller than the size of the light-transmitting area Q1 corresponding to the second type of sub-pixel unit 131 along the column direction, the first metal trace 211 extending along the row direction at the position of the light-transmitting area Q1 corresponding to the first type of sub-pixel unit 121 can be widened toward the inside of the light-transmitting area Q1 it surrounds, thereby making the size of the light-transmitting area Q1 corresponding to the first type of sub-pixel unit 121 along the column direction smaller.

[0107] For example, in some embodiments, the width of the first metal trace and the second metal trace 212 that enclose the light-transmitting area Q1 corresponding to the second type of sub-pixel unit 131 can be 3 to 4 μm (micrometers), which is approximately the same as the width of the metal trace 211 of a conventional touch layer. The width of the first metal trace and the second metal trace 212 that enclose the light-transmitting area Q1 corresponding to the first type of sub-pixel unit 121 can be increased to 6 to 9 μm (micrometers). For example, it can be widened to 6 to 9 μm (micrometers) towards the inside of the light-transmitting area Q1 it encloses, thereby reducing the size of the light-transmitting area Q1 corresponding to the first type of sub-pixel unit 121 in the column direction.

[0108] Obviously, as mentioned above, the width of the metal trace 21, namely the first metal trace and the second metal trace 212, can be any suitable width. For example, the width of the first metal trace and the second metal trace 212 that enclose the light-transmitting area Q1 corresponding to the first type of sub-pixel unit 121 can be sufficient to block the second preset viewing angle range.

[0109] Therefore, in this application, no new process is required. A better privacy protection effect can be achieved simply by adjusting the width of the metal trace 21 of the touch layer 2 and the width of the frame edge 310 of the black matrix frame 31 of the black matrix layer 3. The process is simple.

[0110] In some embodiments, the multiple first metal traces 211 extending along the row direction and spaced apart from each other, and the multiple second metal traces 212 extending along the column direction and spaced apart from each other, are located in different layers of the touch layer 2. The multiple first metal traces 211 and the multiple second metal traces 212 intersect to form multiple light-transmitting areas Q1, meaning that the projection of the multiple first metal traces 211 onto the layer containing the multiple second metal traces 212 intersects with the multiple second metal traces 212. The touch layer 2 is a capacitive touch structure. Each intersection point of the first metal trace 211 and the second metal trace 212 corresponds to a touch point. When a press is applied to a certain position on the touch display panel 100, the distance between the first metal trace 211 and the second metal trace 212 at that position changes, causing a corresponding capacitance change at that position, thus reflecting that a touch has occurred and realizing the touch function.

[0111] Please refer to Figure 8, which is a schematic diagram showing the stacked structure of a touch display panel 100 in some embodiments of this application, illustrating a multi-layered structure.

[0112] As shown in Figure 8, an optical adhesive 32 is provided in the area outside the black matrix frame 31 of the black matrix layer 3. The black matrix layer 3 is fixedly connected to the touch layer 2 by the optical adhesive 32. The optical adhesive 32 is a light-transmitting adhesive that allows light to pass through.

[0113] That is, in some embodiments, the black matrix layer 3 and the optical adhesive 32 form a co-layer, thereby simultaneously realizing the light-shielding function of the black matrix and the bonding and fixing function of the optical adhesive.

[0114] The thickness of the black matrix frame 31 can be the same as or less than the thickness of the black matrix layer 3. For example, the thickness of the black matrix frame 31 can be the same as the thickness of the black matrix layer 3, and an optical adhesive 32 of the same thickness is applied to the area outside the black matrix frame 31 in the black matrix layer 3 to form a complete black matrix layer 3. Alternatively, the thickness of the black matrix frame 31 can be less than the thickness of the black matrix layer 3, and the optical adhesive 32 can be layered with the black matrix frame 31 so that the thickness of the area containing the black matrix frame 31 is the same as the thickness of the black matrix layer 3. Furthermore, other areas are filled with optical adhesive 32 of the same thickness as the black matrix layer 3 to form a complete black matrix layer 3.

[0115] In some embodiments, as shown in FIG8, the touch display panel 100 further includes an encapsulation layer 4, which is disposed between the display layer 1 and the touch layer 2. The encapsulation layer 4 is used to encapsulate the display layer 1 and to bond and fix the display layer 1 and the touch layer 2 together.

[0116] In some embodiments, as shown in FIG8, the touch display panel 100 further includes a driving layer 5, which is disposed on the side of the display layer 1 opposite to the touch layer 2, and is used to drive the pixel unit 11 of the display layer 1 to emit light.

[0117] That is, in some embodiments, the touch display panel 100 may further include a driving layer 5 to drive the pixel units 11 of the display layer 1 to emit light.

[0118] In some embodiments, the driving layer 5 may include a TFT thin-film transistor array. The driving layer 5 is connected between the driving circuit and the pixel units 11 arranged in rows and columns, and is used to apply the driving voltage provided by the driving circuit to the corresponding pixel unit 11 to drive the pixel unit 11 to emit light and display.

[0119] As mentioned above, the sub-pixel units included in the pixel unit 11 may be OLEDs. The cathode of the OLED is grounded, and the anode is connected to the driving layer 5. The driving layer 5 is used to control the application of the driving voltage provided by the driving circuit to the anode of at least some of the sub-pixel units in the corresponding pixel unit 11, so that at least some of the sub-pixel units in the corresponding pixel unit 11 are powered on and emit light. Thus, the light-emitting at least some sub-pixel units generate light of the corresponding color, which is mixed to form the final color presented by the corresponding pixel unit 11, thereby making the pixel unit 11 display the corresponding color.

[0120] In some embodiments, the driving layer 5, from the perspective of the stacking structure, includes structural layers such as a planarization layer and a buffer layer, which will not be described in detail here.

[0121] In some embodiments, the driving layer 5 is used to drive at least the second type of pixel unit 13 of the display layer 1 to emit light, or to drive only the first type of pixel unit 12 to emit light.

[0122] That is, in some embodiments, the driving layer 5 can drive the second type of pixel unit 13 of the display layer 1 to emit light, or both the second type of pixel unit 13 and the first type of pixel unit 12 of the display layer 1 can emit light. Therefore, since the second type of pixel unit 13 has a larger viewing angle, it is suitable for scenarios where privacy is not required, thus improving the display effect. Alternatively, the driving layer 5 can drive only the first type of pixel unit 12 of the display layer 1 to emit light. Since the first type of pixel unit 12 has a smaller viewing angle, in scenarios requiring privacy, only the first type of pixel unit 12 of the display layer 1 can be driven to emit light, effectively achieving privacy protection.

[0123] As shown in Figure 8, the touch display panel 100 further includes a polarizer layer 6, which is stacked on the side of the black matrix layer 3 opposite to the touch layer 2.

[0124] As shown in Figure 8, the touch display panel 100 further includes a first optical adhesive layer 7, which is disposed between the polarizer layer 6 and the black matrix layer 3, and is used to bond and fix the polarizer layer 6 and the black matrix layer 3.

[0125] As shown in Figure 8, the touch display panel 100 also includes a protective layer 8, which is stacked on the side of the polarizer layer 6 facing away from the black matrix layer 3, and can serve as the outermost layer of the touch display panel 100.

[0126] The side of the protective layer 8 that faces away from the polarizer layer 6 is the light-emitting surface of the touch display panel 100, which is also the display surface.

[0127] In some embodiments, as shown in FIG8, the touch display panel 100 further includes a second optical adhesive layer 23, which is disposed between the touch layer 2 and the black matrix layer 3 for bonding and fixing the touch layer 2 and the black matrix layer 3.

[0128] As shown in Figure 8, the touch display panel 100 also includes a base layer 9, which is disposed on the side of the driving layer 5 opposite to the display layer 1. The base layer 9 serves as the base of the touch display panel 100 and supports the other layers of the touch display panel 100.

[0129] Please refer back to Figure 4. In some embodiments, the plurality of pixel units 11 constitute a plurality of repeating units 10, that is, the plurality of first-type pixel units 12 and the plurality of second-type pixel units 13 constitute a plurality of repeating units 10. As shown in Figure 4, the plurality of repeating units 10 are arranged in rows and columns, and each repeating unit 10 includes at least one first-type pixel unit 12 and at least one second-type pixel unit 13, and the at least one first-type pixel unit 12 and at least one second-type pixel unit 13 in each repeating unit 10 are arranged along the row direction.

[0130] That is, in some embodiments, the display layer 1 may include a plurality of repeating units 10, each repeating unit 10 including at least one first type pixel unit 12 and at least one second type pixel unit 13, wherein the at least one first type pixel unit 12 and at least one second type pixel unit 13 in each repeating unit 10 are arranged along a row direction. Thus, this method facilitates the manufacturing of the display layer 1.

[0131] In some embodiments, as described above, each first-class pixel unit 12 includes three first-class sub-pixel units 121, and each second-class pixel unit 13 includes three second-class sub-pixel units 131. As shown in FIG4, the three first-class sub-pixel units 121 are arranged along the column direction, and the three second-class sub-pixel units 131 are also arranged along the column direction.

[0132] That is, in some embodiments, three first-class sub-pixel units 121 in the same first-class pixel unit 12 are arranged along the column direction, and three second-class sub-pixel units 131 in the same second-class pixel unit 13 are also arranged along the column direction.

[0133] Thus, through the above arrangement, as shown in Figure 4, in the same column of the touch display panel 100, all are either the first type of sub-pixel units 121 or all are either the second type of sub-pixel units 131. In the same row of the touch display panel 100, the first type of sub-pixel units 121 and the second type of sub-pixel units 131 are interspersed. Therefore, when only the first type of pixel units 121 are illuminated, better privacy protection in the left and right directions can be achieved, and when at least the second type of sub-pixel units 131 are illuminated, a better display effect can be achieved.

[0134] In some embodiments, as described above, the three first-type sub-pixel units 121 include a first-type R pixel unit 121a, a first-type G pixel unit 121b, and a first-type B pixel unit 121c, and the three second-type sub-pixel units 131 include a second-type R pixel unit 131a, a second-type G pixel unit 131b, and a second-type B pixel unit 131c. In some embodiments, as shown in FIG4, the first-type R pixel unit 12a, the first-type G pixel unit 121b, and the first-type B pixel unit 121c in each first-type pixel unit 12 are arranged sequentially along the column direction, and the second-type B pixel unit 131b, the second-type R pixel unit 131a, and the second-type G pixel unit 131c in each second-type pixel unit 13 are arranged sequentially along the column direction.

[0135] That is, in some embodiments, the three sub-pixel units in each first type pixel unit 12 are arranged along the column direction, specifically the first type R pixel unit 121a, the first type G pixel unit 121b, and the first type B pixel unit 121c are arranged sequentially along the column direction, and the three sub-pixel units in each second type pixel unit 13 are also arranged along the column direction, specifically the second type B pixel unit 131b, the second type R pixel unit 131a, and the second type G pixel unit 131c are arranged sequentially along the column direction.

[0136] Figure 4 illustrates an example where each repeating unit 10 includes one first-type pixel unit 12 and one second-type pixel unit 13, with the first-type and second-type pixel units in each repeating unit 10 arranged alternately along the row direction. Therefore, the pixel arrangement shown in Figure 4 employs 2 / 3 SPR subpixel rendering technology, enabling two pixel units 11 in the row direction to achieve the display effect of three pixels through the SPR algorithm, effectively improving the overall pixel aperture ratio.

[0137] Obviously, in some embodiments, each repeating unit 10 may also include other numbers of first-type pixel units 12 and second-type pixel units 13. For example, each repeating unit 10 may include two first-type pixel units 12 and one second-type pixel unit 13, and along the row direction, the second-type pixel unit 13 in each repeating unit 10 is located between the two first-type pixel units 12. As another example, each repeating unit 10 may also include one first-type pixel unit 12 and two second-type pixel units 13, and along the row direction, the first-type pixel unit 12 in each repeating unit 10 is located between the two second-type pixel units 13, and so on.

[0138] Figure 4 and the above examples are merely illustrations. The first type of pixel unit 12 and the second type of pixel unit 13, as well as their included sub-pixel units, can have other arrangements, as long as they can achieve privacy protection in certain directions and normal viewing within the display viewing angle range when only the first type of pixel unit 12 emits light. For example, in some embodiments, the at least one first type of pixel unit 12 and at least one second type of pixel unit 13 in each repeating unit 10 are arranged along the column direction, and each first type of pixel unit 12 includes three first type of sub-pixel units 121, and each second type of pixel unit 13 includes three second type of sub-pixel units 131. The three first type of sub-pixel units 121 are arranged along the row direction, and the three second type of sub-pixel units 131 are also arranged along the row direction.

[0139] In some embodiments, in addition to the repeating unit 10, the display layer 1 further includes multiple first-type G-pixel units 121b and multiple second-type G-pixel units 131b. Generally, the display layer 1 has more green sub-pixel units, including the first-type G-pixel units 121b and the second-type G-pixel units 131b, and these green sub-pixel units are also larger in size. Therefore, as mentioned above, the first-type G-pixel units 121b can be limited. When the display viewing angle of the first-type G-pixel units 121b is restricted, many areas will be invisible when viewed from that viewing angle, resulting in missing or unclear display content, thus achieving the purpose of preventing peeping. That is, only the first-type G-pixel units 121b may correspond to a black matrix sub-frame 311; that is, each black matrix frame 31 may only include a black matrix sub-frame 311 corresponding to the first-type G-pixel unit 121b.

[0140] Please refer to Figure 9, which is another planar schematic diagram of the display layer 1 of the touch display panel 100 in some embodiments of this application.

[0141] In some embodiments, the plurality of pixel units 11 on the display layer 1 may not constitute repeating units, and the plurality of first-type pixel units 12 and second-type pixel units 13 may be arranged arbitrarily in rows and columns, as long as the distribution of first-type pixel units 12 and second-type pixel units 13 in each area of ​​the display layer 1 meets the display requirements. That is, it is sufficient that when only the first-type pixel units 12 are illuminated, the complete and clear display content can be viewed within the display viewing angle range of the first-type pixel units 12, and when at least the second-type pixel units 13 are illuminated, the complete and clear display content can be viewed within the corresponding display viewing angle range.

[0142] For example, as shown in Figure 9, each row of the display layer 1 contains a plurality of first-type pixel units 12 and a plurality of second-type pixel units 13, and the arrangement of the plurality of first-type pixel units 12 and the plurality of second-type pixel units 13 in different rows may be different.

[0143] In some embodiments, the shape of the sub-pixel units included in the pixel unit 11 in FIG4 and other figures, namely the shape of the first type of sub-pixel unit 121 and the second type of sub-pixel unit 131, is the shape of the light outlet K1 of the sub-pixel units included in the pixel unit 11.

[0144] In this application, the light-emitting port K1 of the sub-pixel unit included in the pixel unit 11 is an opening formed on the (Pixel Definition Layer, PDL), that is, it can also be the opening of the sub-pixel unit.

[0145] As shown in Figure 4, the openings of the first type of sub-pixel units 121 and the second type of sub-pixel units 131 are square. Obviously, the openings of the first type of sub-pixel units 121 and the second type of sub-pixel units 131 can also be other shapes such as circles, ellipses, polygons, or rhombuses.

[0146] The shape of the black matrix sub-frame 311 corresponding to the first type of sub-pixel unit 121 can be the same as the shape of the first type of sub-pixel unit 121. That is, when the opening of the first type of sub-pixel unit 121 is square, the shape of the black matrix sub-frame 311 corresponding to the first type of sub-pixel unit 121 is also square. When the opening of the first type of sub-pixel unit 121 is circular, elliptical, polygonal or rhomboid, the shape of the black matrix sub-frame 311 corresponding to the first type of sub-pixel unit 121 is also circular, elliptical, polygonal or rhomboid.

[0147] The shape of the black matrix sub-frame 311 corresponding to the first type of sub-pixel unit 121 is the shape of the projection of the black matrix sub-frame 311 of the first type of sub-pixel unit 121 onto the display layer 1.

[0148] In some embodiments, when the opening of the first type of sub-pixel unit 121 and the shape of the black matrix sub-frame 311 corresponding to the first type of sub-pixel unit 121 are circular or the like, the screenshots in Figures 1-2 can be screenshots in any direction, and the size of the light-transmitting area Q1 of the first type of sub-pixel unit 121 along any direction is smaller than the size of the light-transmitting area Q1 of the second type of sub-pixel unit 131 along the corresponding direction.

[0149] In some embodiments, an encapsulation layer formed using COE (color filter on encapsulation) technology can also be disposed above the black matrix layer 3. Since the encapsulation layer formed using COE technology can achieve the effect of the polarizer layer 6, the polarizer layer 6 can be omitted in this case. Furthermore, since the COE encapsulation layer itself has a black matrix structure, it can accelerate the attenuation at large viewing angles, thus improving the privacy protection effect. The black matrix structure in the COE encapsulation layer is located at the position corresponding to the first type of pixel unit 12; that is, the projection of the black matrix structure in the COE encapsulation layer onto the display layer 1 can also surround the corresponding first type of pixel unit 12, and specifically, it can surround the first type of sub-pixel unit 121 within the corresponding first type of pixel unit 12.

[0150] In some embodiments, an MLA (microlens array) structure layer with different refractive indices can be added above the black matrix layer 3. This MLA structure layer may include multiple MLA structures, which can further improve the privacy protection effect and reduce power consumption by 12%. The multiple MLA structures included in the MLA structure layer are located at positions corresponding to the first type of pixel unit 12. That is, the projection of the multiple MLA structures included in the MLA structure layer onto the display layer 1 can also surround the corresponding first type of pixel unit 12, specifically surrounding the first type of sub-pixel unit 121 within the corresponding first type of pixel unit 12.

[0151] In some embodiments, an MLA (microlens array) structure and a COE (coating over encapsulation) layer can be stacked on top of the black matrix layer 3 simultaneously. For example, the COE layer and the MLA structure can be stacked sequentially on top of the black matrix layer 3, thereby improving the privacy protection effect.

[0152] Please refer to Figure 10, which is a partial top view illustrating a portion of the structure of a touch display panel 100 in some embodiments of this application.

[0153] Figure 10 illustrates a schematic diagram showing the projection of multiple MLA structures S1 onto the display layer 1, surrounding the first type of sub-pixel unit 121 in the corresponding first type of pixel unit 12.

[0154] As shown in Figure 10, the shape of the first type of sub-pixel unit 121 is illustrated as a circle, the shape of the MLA structure S1 is illustrated as a square, and the hollow area formed by the MLA structure S1 is also circular, which is consistent with the shape of the first type of sub-pixel unit 121 and surrounds the first type of sub-pixel unit 121.

[0155] As mentioned above, the MLA structure layer may include multiple MLA structures S1, which can further improve the privacy protection effect and reduce power consumption by 12%.

[0156] Therefore, the touch display panel 100 of this application, through the black matrix layer 3 including multiple black matrix frames 31, each black matrix frame 31 corresponding to a first type of pixel unit 12, and the projection on the display layer 1 surrounding the corresponding first type of pixel unit 12, and through the cooperation of the black matrix frame 31 and the metal traces 21 of the touch layer 2 to block part of the light emission path of the first type of pixel unit 12, limits the display viewing angle range of the first type of pixel unit 12, thereby making the display viewing angle range of the first type of pixel unit 12 smaller than that of the second type of pixel unit 13. Thus, the touch display panel 100 can emit light and display only through the first type of pixel unit 12 when needed. Since the display viewing angle range of the first type of pixel unit 12 is small, a better privacy protection effect can be achieved. Furthermore, in this application, by using the black matrix frame 31 and the metal traces 21 of the touch layer 2 to block part of the light emission path of the first type of pixel unit 12, a larger range of blocking can be achieved, effectively improving the privacy protection effect. Furthermore, in this application, no new process is required. A better privacy protection effect can be achieved simply by adjusting the width of the metal trace 21 of the touch layer 2 and the width of the frame edge 310 of the black matrix frame 31 of the black matrix layer 3. The process is simple.

[0157] In some embodiments, the light-emitting port K1 of the first type of pixel unit 12 is smaller than the light-emitting port K1 of the second type of pixel unit 13.

[0158] Although the pixel units 11, namely the first type of pixel unit 12 and the second type of pixel unit 13, are relatively small and can be considered as point light sources, the size of the light emission port K1 of the first type of pixel unit 12 and the second type of pixel unit 13 still affects the divergence angle of the emitted light to some extent. Therefore, in some embodiments, the light emission port K1 of the first type of pixel unit 12 is smaller than the light emission port K1 of the second type of pixel unit 13, thereby ensuring that the display viewing angle range of the first type of pixel unit 12 is smaller, and further improving the privacy protection effect.

[0159] In some embodiments, as described above, the first type of pixel unit 12 includes three first type of sub-pixel units 121, specifically including a first type of R pixel unit 121a, a first type of G pixel unit 121b, and a first type of B pixel unit 121c. As mentioned above, as shown in FIG. 4, the second type of pixel unit 13 includes three second type of sub-pixel units 131, and the three second type of sub-pixel units 131 include a second type of R pixel unit 131a, a second type of G pixel unit 131b, and a second type of B pixel unit 131c. Specifically, the size of the light-emitting port K1 of the first type of R pixel unit 121a is smaller than the size of the light-emitting port K1 of the second type of R pixel unit 131a; the size of the light-emitting port K1 of the first type of G pixel unit 121b is smaller than the size of the light-emitting port K1 of the second type of G pixel unit 131b; and the size of the light-emitting port K1 of the first type of B pixel unit 121c is smaller than the size of the light-emitting port K1 of the second type of B pixel unit 131c.

[0160] That is, in some embodiments, the size of the light-emitting port K1 corresponding to the first type of sub-pixel unit 121 is smaller than the size of the light-emitting port K1 corresponding to the second type of sub-pixel unit 131. In other words, the area of ​​the light-emitting port K1 of the first type of sub-pixel unit 121 of a certain color is smaller than the size of the light-emitting port K1 of the second type of sub-pixel unit 131 of the same color.

[0161] In some embodiments, the size of the light-emitting port K1 of the pixel unit 11 may refer to the size of the light-emitting port K1 of the pixel unit 11 along certain directions, that is, specifically the size of the light-emitting port K1 of the sub-pixel units included in the pixel unit 11 along certain directions, such as the size in the row direction. In some embodiments, the size of the light-emitting port K1 of the pixel unit 11 may also refer to the area of ​​the light-emitting port K1 of the pixel unit 11, that is, specifically the area of ​​the light-emitting port K1 of the sub-pixel units included in the pixel unit 11.

[0162] Please refer to Figure 11, which is a schematic diagram of the stacking of the display screen 110 in some embodiments of this application.

[0163] The display screen 110 includes the touch display panel 100 in any of the preceding embodiments, and also includes a glass cover plate 111.

[0164] The glass cover plate 111 is stacked on the light-emitting surface of the touch display panel 100, that is, one side of the display surface, and serves as a protective plate for the touch display screen 110.

[0165] Please refer to Figure 12, which is a plan view of an electronic device 200 in some embodiments of this application.

[0166] The electronic device 200 includes the aforementioned display screen 110, that is, it also includes the touch display panel 100 in any of the aforementioned embodiments. Specifically, the display screen 110 can be a touch display screen of the electronic device 200, thereby realizing the functions of touch input and display output.

[0167] As shown in Figure 12, the electronic device 200 includes a top end D1, a bottom end D2, and two side ends D3.

[0168] In some embodiments, when the electronic device 200 is in normal use, the top end D1 is generally located at the top or at the end furthest from the user.

[0169] In some embodiments, the aforementioned row direction may refer to the direction from one side end D3 to the other side end D3 of the electronic device 200 when the touch display panel 100 is installed in the electronic device 200, and the aforementioned column direction may refer to the direction from the top D1 to the bottom D2 or from the bottom D2 to the top D1 of the electronic device 200 when the touch display panel 100 is installed in the electronic device 200.

[0170] In some embodiments, the row direction can also be the left-right direction of the displayed content when the touch display panel 100 displays the corresponding content and the content is displayed upright. That is, the row direction is not dependent on the holding state of the electronic device, but can be the left-right direction of the displayed content / screen when it is displayed upright in any holding state. For example, when the electronic device 200 is currently held with the top D1 at the top and the bottom D2 at the bottom, the direction from one side D3 to the other side D3 of the electronic device 200 can be the aforementioned row direction. And when the electronic device 200 is currently held with one side D3 at the top and the other at the bottom, the direction from the top D1 to the bottom D2 of the electronic device 200 can be the aforementioned row direction.

[0171] In this application, the use of directional terms such as "top" and "bottom" when describing the electronic device 200 is primarily based on the orientation of the device when held and used by the user. "Top" refers to the position facing the top of the electronic device 200, and "bottom" refers to the position facing the bottom. This does not imply that the device or component must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation on the orientation of the electronic device 200 in a real-world application scenario. In some embodiments, the bottom end D2 of the electronic device 200 is the end with a headphone jack and a USB port, and the top end D1 is the opposite end to the end with the headphone jack and USB port, or it may refer to the end with a camera, receiver, etc.

[0172] In some embodiments, the display modes of the electronic device 200 include a normal display mode and a privacy display mode. In the normal display mode, at least the second type of pixel unit 13 of the touch display panel 100 emits light. In the privacy display mode, only the first type of pixel unit 12 in the touch display panel 100 emits light.

[0173] As mentioned above, when the display is illuminated solely by the first type of pixel unit 12, a good privacy protection effect can be achieved due to the small display viewing angle range of the first type of pixel unit 12. Furthermore, in this application, by using the black matrix frame 31 in conjunction with the metal traces 21 of the touch layer 2 to block part of the light emission path of the first type of pixel unit 12, a larger area of ​​obstruction can be achieved, effectively improving the privacy protection effect. Moreover, in this application, no new manufacturing process is required; a superior privacy protection effect can be achieved simply by adjusting the width of the metal traces 21 of the touch layer 2 and the width of the frame edge 310 of the black matrix frame 31 of the black matrix layer 3, resulting in a simple manufacturing process.

[0174] When at least the second type of pixel unit 13 of the touch display panel 100 emits light, that is, when only the second type of pixel unit 13 emits light, or when both the second type of pixel unit 13 and the first type of pixel unit 12 emit light, the second type of pixel unit 13 has less viewing angle obstruction and can be displayed normally with a larger display viewing angle range.

[0175] The structure of the touch display panel 100 included in the electronic device 200 is described in more detail in the aforementioned introduction of the touch display panel 100, and will not be repeated here.

[0176] Please refer to Figure 13, which is a schematic diagram comparing the brightness attenuation curves of the electronic device 200 and the reference electronic device in some embodiments of this application.

[0177] The reference electronic device can be a regular electronic device without a privacy display mode. Figure 13 shows the brightness attenuation curve S11 of the reference electronic device at various viewing angles, the brightness attenuation curve S12 of the electronic device 200 of this application when it is working in normal display mode at various viewing angles, and the brightness attenuation curve S13 of the electronic device 200 of this application when it is working in privacy display mode at various viewing angles.

[0178] In Figure 13, the horizontal axis represents the viewing angle, and the vertical axis represents the display brightness of the electronic device. As mentioned earlier, the viewing angle can also be the angle between the line of sight and the normal L1 of the pixel unit 11, which is equivalent to the display angle of the electronic device.

[0179] As shown in Figure 13, the reference electronic device still has 40% to 70% display brightness within a viewing angle range of 30° to 50°, thus allowing the display content of the reference electronic device to be viewed relatively clearly from the side, resulting in poor privacy protection. However, as shown in Figure 13, when the electronic device 200 of this application is operating in privacy display mode, the display brightness at a viewing angle greater than 30° is close to zero, almost completely invisible. This indicates that the display viewing angle range of the electronic device does not include this viewing angle / display angle, meaning that the light emitted by the touch display panel 100 is essentially invisible at this viewing angle / display angle. Therefore, the display content of the electronic device 200 cannot be viewed from the side at a viewing angle greater than 30°, resulting in excellent privacy protection. Furthermore, the display brightness exceeds 80% within a viewing angle range of less than 10°, satisfying normal viewing requirements. When the electronic device 200 of this application is working in normal display mode, the display brightness exceeds 50% at a viewing angle of less than 30° and is close to 90% at a viewing angle of less than 10°. This is sufficient to meet the display brightness requirements when viewing the display content of the electronic device 200 normally, without affecting the normal display of the electronic device 200.

[0180] Therefore, it can be seen that the electronic device 200 of this application, when equipped with the touch display panel 100, can achieve a good privacy protection effect without affecting the normal use of the electronic device 200.

[0181] Please refer to Figure 14, which is a structural block diagram of an electronic device 200 in some embodiments of this application.

[0182] As shown in Figure 14, the electronic device 200 includes the touch display panel 100 and a processor 101.

[0183] The processor 101 can be used to control the display mode of the electronic device 200 to switch to the normal display mode or the privacy display mode.

[0184] For example, the processor 101 can respond to a privacy protection activation operation and control the electronic device 200 to enter a privacy protection display mode. For instance, the processor 101 can control the driving layer 5 of the touch display panel 100 to only conduct the electrical connection between the driving circuit and the first type of pixel unit 12, thereby driving only the first type of pixel unit 12 to emit light. Alternatively, the processor 101 can respond to a privacy protection deactivation operation and control the electronic device 200 to enter a normal display mode. For instance, the processor 101 can control the driving layer 5 of the touch display panel 100 to conduct the electrical connection between the driving circuit and the second type of pixel unit 13, or conduct the connection between the driving circuit and all pixel units 11, thereby driving the second type of pixel unit 13 to emit light, or drive all pixel units 11, i.e., all the first type of pixel units 12 and the second type of pixel units 13, to emit light.

[0185] In some embodiments, as shown in FIG14, the electronic device 200 further includes an input unit 102. The privacy protection activation and deactivation operations can be input via the input unit 102.

[0186] In some embodiments, the privacy protection activation or deactivation operation may be an operation of accessing the function menu options through the input unit 102 and selecting the "activate detection" or "deactivate detection" function option.

[0187] In some embodiments, the input unit 102 is the touch display panel 100. The detection on operation and the detection off operation can be touch gesture operations with specific touch trajectories input on the touch display panel 100. For example, the detection on operation can be a touch gesture operation with a "√" shaped trajectory input on the touch screen, while the detection off operation can be a touch gesture operation with an "×" shaped trajectory input on the touch screen, and so on.

[0188] In some embodiments, the input unit 102 may also include physical buttons, such as a power button and / or volume buttons located on the side frame of the electronic device 200. The detection on operation and the detection off operation may be specific pressing operations performed on the physical buttons. For example, the detection on operation and the detection off operation may both be operations of pressing the volume button and the power button simultaneously. When the detection function is currently on, pressing the volume button and the power button simultaneously is the detection off operation, and when the detection function is currently off, pressing the volume button and the power button simultaneously is the detection on operation, and so on.

[0189] The electronic device 200 also includes a memory, a battery, etc., which are not relevant to the improvements in this application and will not be described in detail.

[0190] The electronic device 200 described in this application may be a mobile phone, tablet computer, laptop computer, or other electronic device.

[0191] By utilizing the touch display panel 100, touch display screen 110, and electronic device 200 described in this application, the black matrix layer 3 and the metal traces 21 of the touch layer 2 work together to partially block the light emission path of the first type of pixel unit 12, thereby limiting the display viewing angle range of the first type of pixel unit 12. This results in the display viewing angle range of the first type of pixel unit 12 being smaller than that of the second type of pixel unit 13. Consequently, the touch display panel 100 can emit light only through the first type of pixel unit 12 when needed. Since the display viewing angle range of the first type of pixel unit 12 is relatively small, a good privacy protection effect can be achieved. Furthermore, in this application, by using the black matrix layer 3 and the metal traces 21 of the touch layer 2 to block part of the light emission path of the first type of pixel unit 12, a larger area of ​​obstruction can be achieved, effectively improving the privacy protection effect. Furthermore, in this application, no new process is required. A better privacy protection effect can be achieved simply by adjusting the width of the metal trace 21 of the touch layer 2 and the width of the frame edge 310 of the black matrix frame 31 of the black matrix layer 3. The process is simple.

[0192] 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.

[0193] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Where there is no conflict, the embodiments and features in the embodiments of this application can be combined with each other. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A touch display panel, characterized in that, include: The display layer includes a plurality of pixel units arranged in rows and columns, the plurality of pixel units including a plurality of first type pixel units and a plurality of second type pixel units; A touch layer is stacked on the display layer, and the touch layer includes multiple metal traces distributed in rows and columns; A black matrix layer is stacked on top of the touch layer; The black matrix layer and metal traces partially block the light emission path of the first type of pixel unit to limit the display viewing angle range of the first type of pixel unit, wherein the display viewing angle range of the first type of pixel unit is smaller than that of the second type of pixel unit.

2. The touch display panel according to claim 1, characterized in that, The light-emitting ports of the plurality of pixel units face the touch layer, and the display viewing angle within the display viewing angle range is the angle between the light-emitting port and the normal direction of the light-emitting port.

3. The touch display panel according to claim 2, characterized in that, The black matrix layer blocks part of the light emission path of the first type of pixel unit, thereby covering the first preset viewing angle range of the first type of pixel unit. The metal trace of the touch layer blocks part of the light emission path of the first type of pixel unit, thereby covering the second preset viewing angle range of the first type of pixel unit. The first preset viewing angle range and the second preset viewing angle range at least coincide at their boundaries. The viewing angles in both the first preset viewing angle range and the second preset viewing angle range are angles with the normal direction of the light emission port.

4. The touch display panel according to claim 3, characterized in that, At least a portion of the viewing angles in the first preset viewing angle range are smaller than the viewing angles in the second preset viewing angle range.

5. The touch display panel according to claim 2, characterized in that, The first preset viewing angle range is at least a portion of the viewing angle range between 25° and 42°, and the second preset viewing angle range is at least a portion of the viewing angle range between 40° and 65°.

6. The touch display panel according to claim 2, characterized in that, The display viewing angle within the range of the display viewing angle includes the viewing angle located on both sides of the normal direction along the row direction, or further includes the viewing angle located on both sides of the normal direction along the column direction.

7. The touch display panel according to claim 3, characterized in that, The first preset viewing angle interval and the second preset viewing angle interval include viewing angles located on both sides of the normal direction along the row direction, or further include viewing angles located on both sides of the normal direction along the column direction.

8. The touch display panel according to claim 1, characterized in that, The black matrix layer has multiple through holes distributed on it. Each through hole corresponds to each first type of pixel unit, and part of the light from the first type of pixel unit is transmitted out through the corresponding through hole.

9. The touch display panel according to claim 1, characterized in that, The black matrix layer includes multiple black matrix frames, each black matrix frame corresponding to a first type of pixel unit, and the projection on the display layer surrounds the corresponding first type of pixel unit.

10. The touch display panel according to claim 9, characterized in that, Each first-class pixel unit includes three first-class sub-pixel units, each black matrix frame includes at least one black matrix sub-frame, each black matrix sub-frame corresponds to one of the first-class sub-pixel units in the corresponding first-class pixel unit, and the projection on the display layer surrounds the corresponding first-class sub-pixel unit.

11. The touch display panel according to claim 10, characterized in that, The three first-type sub-pixel units include a first-type R-pixel unit, a first-type G-pixel unit, and a first-type B-pixel unit, with at least the first-type G-pixel unit corresponding to a black matrix sub-frame.

12. The touch display panel according to claim 10, characterized in that, Each first-class pixel unit includes three first-class sub-pixel units, each black matrix frame includes three black matrix sub-frames, each black matrix sub-frame corresponds to a first-class sub-pixel unit, and the projection on the display layer surrounds the corresponding first-class sub-pixel unit.

13. The touch display panel according to claim 1, characterized in that, Each first-class pixel unit includes three first-class sub-pixel units, and each second-class pixel unit includes three second-class sub-pixel units. The multiple row-column distributed metal traces include multiple first metal traces extending along the row direction and spaced apart from each other, and multiple second metal traces extending along the column direction and spaced apart from each other. The multiple first metal traces and multiple second metal traces intersect and enclose to form multiple light-transmitting areas. Each light-transmitting area corresponds to a sub-pixel unit so that the corresponding sub-pixel unit can emit light. The area of ​​the light-transmitting area corresponding to the first-class sub-pixel unit is smaller than the area of ​​the light-transmitting area corresponding to the second-class sub-pixel unit.

14. The touch display panel according to claim 12, characterized in that, The three first-type sub-pixel units include a first-type R pixel unit, a first-type G pixel unit, and a first-type B pixel unit; the three second-type sub-pixel units include a second-type R pixel unit, a second-type G pixel unit, and a second-type B pixel unit; the area of ​​the light-transmitting region corresponding to the first-type R pixel unit is smaller than the area of ​​the light-transmitting region of the second-type R pixel unit, the area of ​​the light-transmitting region corresponding to the first-type G pixel unit is smaller than the area of ​​the light-transmitting region of the second-type G pixel unit, and the area of ​​the light-transmitting region corresponding to the first-type B pixel unit is smaller than the area of ​​the light-transmitting region of the second-type B pixel unit.

15. The touch display panel according to claim 9, characterized in that, Optical adhesive is provided in the area outside the black matrix frame of the black matrix layer, and the black matrix layer is fixedly connected to the touch layer through the optical adhesive.

16. The touch display panel according to claim 1, characterized in that, The plurality of pixel units constitute a plurality of repeating units, the plurality of repeating units are arranged in rows and columns, and each repeating unit includes at least one first type pixel unit and at least one second type pixel unit, the at least one first type pixel unit and at least one second type pixel unit in each repeating unit are arranged along the row direction.

17. The touch display panel according to claim 16, characterized in that, Each first-class pixel unit includes three first-class sub-pixel units, and each second-class pixel unit includes three second-class sub-pixel units. The three first-class sub-pixel units are arranged along the column direction, and the three second-class sub-pixel units are also arranged along the column direction.

18. A display screen, characterized in that, The display screen includes a glass cover and a touch display panel as described in any one of claims 1-17.

19. An electronic device, characterized in that, The electronic device includes the display screen as described in claim 18.

20. The electronic device according to claim 19, characterized in that, The electronic device has two display modes: a normal display mode and a privacy display mode. In the normal display mode, at least the second type of pixel units in the touch display panel emit light. In the privacy display mode, only the first type of pixel units in the touch display panel emit light.

Images