A display screen cover plate, display screen assembly and electronic device

Abstract

This application relates to a display cover, a display assembly, and an electronic device. The display cover includes a first surface and a second surface distributed along a first direction, the first surface being oriented towards the human eye. The first surface includes a first face and a second face, the first face being perpendicular to the first direction, and the second face being located on at least one side of the first face in the second direction, which is perpendicular to the first direction. At least a portion of the second surface is configured as a curved surface, which is used to refract light emitted from the display panel into parallel light, allowing the parallel light to enter the human eye. The second surface is configured as a curved surface, meaning that the corner positions of the outer surface of the display cover are configured as curved surfaces, such that obliquely incident light is refracted at the second surface into outgoing light parallel to the first direction, allowing outgoing light from the edge region to propagate to the human eye, reducing the area of ​​the black border region, thereby improving the display effect and viewing experience.

Description

Technical Field

[0001] This application relates to the field of electronic equipment technology, and in particular to a display cover, a display assembly, and an electronic device. Background Technology

[0002] Electronic devices include a display panel and a display cover that covers the display panel. The display panel emits light to the outside world, and some of the light is refracted by the display cover and enters the human eye, so that the human eye can see the content displayed on the display panel through the display cover.

[0003] Typically, the size of the display panel is smaller than the size of the display cover, allowing the display cover to completely cover the display panel and enhance its protective function.

[0004] Because of the size difference between the display panel and the display cover, the light emitted by the display panel cannot enter the human eye after being refracted by the display cover at the edge of the display cover. This makes the display area of ​​the electronic device smaller than the area of ​​the display cover, that is, there is a black border at the edge of the display cover, which affects the display effect and viewing experience of the electronic device.

[0005] Therefore, reducing the black borders of electronic devices is an important problem that needs to be solved in this field. Utility Model Content

[0006] In view of this, this application provides a display cover, a display assembly, and an electronic device that can reduce black borders and improve display effect and viewing experience.

[0007] A first aspect of this application provides a display screen cover, including a first surface and a second surface distributed along a first direction, the first surface being oriented toward a human eye. The first surface includes a first face and a second face, the first face being perpendicular to the first direction, and the second face being located on at least one side of the first face in a second direction perpendicular to the first direction. At least a portion of the second surface is configured as a curved surface, the second surface being configured to refract light emitted from the display screen into parallel light, so that the parallel light enters the human eye.

[0008] In this application, the second surface is constructed as a curved surface, that is, the corner position of the outer surface of the display cover is constructed as a curved surface, the projection of the display panel in the first direction and the projection of the first surface in the first direction overlap, and the projection of the display panel in the first direction and the projection of the second surface in the first direction overlap, so that the light emitted by the display panel can be obliquely propagated to the second surface.

[0009] The second surface is constructed as a curved surface, so that incident light incident at an angle is refracted at the second surface into outgoing light parallel to the first direction, allowing outgoing light from the edge area to propagate to the human eye, thereby reducing the area of ​​the black border region and improving the display effect and viewing experience.

[0010] In one possible design, the second surface includes a first end connected to the second surface. The second surface has a first position located on the side of the second surface away from the first surface. Light from a first light source on the display panel propagating to the first position is a first ray. The second surface refracts the first ray into a first outgoing light propagating along a first direction, which is the edge ray of the display area. The perpendicular distance H between the first position and the first light source in the second direction satisfies: 0.16mm ≤ H ≤ 1.54mm.

[0011] In this application, the vertical distance H is the dimension of the black border area in the second direction. 0.16mm≤H≤1.54mm can reduce the width of the black border area, thereby increasing the area of ​​the display area, and can reduce the distance between the first position and the first light source, so as to reduce the overall size of the display cover.

[0012] In one possible design, the angle between the tangent of the second face at various locations and the second direction gradually decreases along the direction closer to the first face.

[0013] In this application, the angle between the tangent of the second surface and the first direction gradually decreases, so that the second surface can refract some light into light parallel to the first direction at various positions, thereby increasing the amount of light transmitted to the human eye and improving the display effect and viewing experience.

[0014] In one possible design, the projection shape of the second surface in the plane enclosed by the first and second directions is constructed as part of a circle, or the projection shape of the second surface in the plane enclosed by the first and second directions is constructed as part of an ellipse, or the second surface is constructed as a freeform surface.

[0015] In this application, the projection shape of the second surface in the plane enclosed by the first and second directions is constructed as part of a circle, so that the second surface is constructed as an arc surface, which simplifies the shape of the second surface, reduces the processing difficulty of the second surface, and helps to reduce the cost of the display cover.

[0016] The projection shape of the second surface within the plane enclosed by the first and second directions is constructed as part of an ellipse, thus making the second surface an elliptical surface. Constructing the second surface as an elliptical or freeform surface allows the obliquely incident light from multiple light sources between the first and fourth light sources to also reach the human eye, enabling the human eye to see more light emitted from the light sources between the first and fourth light sources, thereby improving the display effect and viewing experience of the screen cover.

[0017] In one possible design, the propagation distance S of the first ray within the display cover plate satisfies: 1mm ≤ S ≤ 2mm.

[0018] In this application, the emitted light of the first ray is the light from the outermost edge of the display area. The greater the propagation distance of the first ray within the display cover, the greater the reduction in the size of the black border area. Therefore, with the first included angle being a fixed value, the propagation distance of the first ray within the display cover can also affect the reduction effect of the black border area. 1mm≤S≤2mm can improve the reduction effect of the black border area while reducing the overall size of the display cover, thus facilitating the thinning of the display cover.

[0019] In one possible design, the second surface includes a third surface and a fourth surface, with the third surface distributed along a first direction along with the first surface, and the fourth surface distributed along the first direction along with the second surface. The third surface is constructed as a curved surface, and the fourth surface is constructed as a plane.

[0020] In this application, the second surface is constructed as a curved surface, that is, the entire second surface is constructed as a curved surface, or a portion of the second surface is constructed as a curved surface, such that the portion or the entire second surface bends inward toward the display cover along the first direction, which can reduce the volume of the display cover, thereby reducing the material cost of the display cover, and at the same time, can reduce the weight of the display cover.

[0021] In one possible design, the third surface is constructed as a circular arc.

[0022] In this application, the third surface can be constructed as an arc surface to simplify the structure of the second surface, thereby reducing the processing cost of the display cover.

[0023] In one possible design, in the first direction, the distance between the first and third faces is greater than the distance between the second and fourth faces.

[0024] In this application, the edge thickness of the display cover is greater than the center thickness, which can reduce the overall weight of the display cover and increase the size of the edge position. This is beneficial to increasing the propagation distance of the first light within the display cover, further reducing the black border area, increasing the display area of ​​the display cover, and improving the display effect and viewing experience.

[0025] In one possible design, the distance L between the second and fourth surfaces in the first direction satisfies: 0.3mm ≤ L ≤ 1.5mm.

[0026] In this application, 0.3mm≤L≤1.5mm can increase the strength of the display cover, reduce the risk of damage to the display cover during processing, assembly, transportation, use and carrying, and help extend the service life of the display cover. At the same time, it can reduce the overall weight of the display cover.

[0027] In one possible design, the first surface further includes a second end connected to the second surface. The second end is located at the first position, or the second end is located on the side of the first position opposite to the first end.

[0028] In this application, when the second end is configured as the first position described above, the edge of the display area is the edge of the display cover, which reduces the size of the display cover, which is beneficial to reducing the overall size of the display assembly and electronic device, and facilitates the miniaturization of electronic device.

[0029] The first position is located between the first end and the second end, which expands the viewing angle of the display content of the display panel and improves the viewing experience of the display cover, the display assembly with the display cover, and electronic devices.

[0030] In one possible design, the display cover also includes a third surface, one end of which is connected to the second surface, and the other end of which is connected to the second surface. The third surface is configured as a plane or a curved surface.

[0031] In this application, the third surface is constructed as a plane, which simplifies the processing of the third surface and helps to reduce the processing cost of the display cover, thereby reducing the cost of the display assembly and electronic device having the display cover.

[0032] The third surface is constructed as a curved surface, which allows for a smooth connection between the second end and the second surface. This reduces the risk of sharp points on the display cover and the risk of damage to the display cover due to stress concentration at the sharp points, thereby improving the lifespan of the display cover.

[0033] A second aspect of this application provides a display screen assembly, including a display screen cover and a display panel as described in any of the preceding claims. In a first direction, the display panel is located on the side of the second surface facing away from the first surface, and the display panel is used to emit light toward the display screen cover. The projection of the display panel in the first direction overlaps with the projection of the first surface in the first direction, and the projection of the display panel in the first direction overlaps with the projection of the second surface in the first direction.

[0034] In this application, the second side of the display cover is constructed as a curved surface, which can reduce the area of ​​the black border region to improve the display effect and viewing experience of the display component.

[0035] In one possible design, the display panel includes a body portion and a curved portion, the curved portion being distributed along a first direction with the first surface, and the body portion being distributed along a second surface with the first direction.

[0036] In this application, the display panel is partially bent to form a curved portion, which increases the contact area between the display panel and the second surface, thereby improving the connection stability between the display panel and the display cover. Simultaneously, it allows for an increase in the size of the display panel, thus increasing the display area.

[0037] A third aspect of this application provides an electronic device comprising a display cover as described in any of the preceding claims. Alternatively, the electronic device comprises a display assembly as described in any of the preceding claims.

[0038] In this application, the second side of the display cover is constructed as a curved surface, which can reduce the area of ​​the black border region to improve the display effect and viewing experience of electronic devices. Attached Figure Description

[0039] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0040] Figure 1 This is a schematic diagram of the structure of an electronic device in some embodiments;

[0041] Figure 2 This is a schematic diagram of the stacked structure of a display assembly in some implementations.

[0042] Figure 3 for Figure 2 A schematic diagram of the optical path of the display screen component in the diagram;

[0043] Figure 4 This is a structural schematic diagram of the display screen cover in some embodiments;

[0044] Figure 5 for Figure 4 A partial optical path diagram of the display cover in some embodiments;

[0045] Figure 6 This is a schematic diagram showing the angles of incidence and exit of light rays when the second surface is constructed as an arc.

[0046] Figure 7 for Figure 4 A partial optical path diagram of the display cover in some other embodiments;

[0047] Figure 8This is a schematic diagram showing the angles of incidence and exit of light rays when the second surface is constructed as an elliptical surface.

[0048] Figure 9 This is a schematic diagram of the propagation path of the first ray within the display screen cover.

[0049] Figure 10 This is a schematic diagram of the stacked structure of the display assembly in some other implementations;

[0050] Figure 11 This is a schematic diagram of the stacked structure of the display assembly in some further embodiments;

[0051] Figure 12 This is a schematic diagram of the stacked structure of the display assembly in some further embodiments;

[0052] Figure 13 for Figure 12 A schematic diagram of the structure of the display screen cover in some embodiments;

[0053] Figure 14 This is a schematic diagram of the stacked structure of the display assembly in some further embodiments;

[0054] Figure 15 for Figure 14 A schematic diagram of the structure of the display panel in some embodiments;

[0055] Figure 16 This is a structural schematic diagram of the display screen cover in some embodiments;

[0056] Figure 17 This is a partial optical path diagram of the display cover in some embodiments.

[0057] Figure label:

[0058] 10-Shell;

[0059] 20 - Display assembly; 210 - Display cover; 220 - Display panel; 221 - First light source; 222 - Second light source; 223 - Third light source; 224 - Fourth light source; 225 - Fifth light source; 226 - Body; 227 - Bending section; 230 - Connecting layer; 240 - Support layer; 250 - Polarizing layer; 260 - Display area; 270 - Black border area;

[0060] 1-First surface; 11-First face; 12-Second face; 121-First position; 122-Second position; 123-Third position; 124-First end; 125-Second end;

[0061] 2-Second surface; 21-Third surface; 22-Fourth surface;

[0062] 3-First normal; 4-Second normal; 5-Third surface. Detailed Implementation

[0063] To better understand the technical solution of this application, the embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0064] It should be understood that the described embodiments are merely some, not all, of the embodiments in this application. All other embodiments obtained by those skilled in the art based on the embodiments in this application without inventive effort are within the scope of protection of this application.

[0065] The terminology used in the embodiments of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. The singular forms “a,” “the,” and “the” used in the embodiments of this application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise.

[0066] It should be understood that the term "and / or" used in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0067] This application provides an electronic device, which includes, but is not limited to, mobile phones, tablets, laptops, televisions, and displays with image display functions. This application does not specifically limit the type of electronic device.

[0068] Figure 1 This is a schematic diagram of the structure of an electronic device in some embodiments. Figure 1 The example electronic device is a mobile phone. Figure 1 As shown, the electronic device includes a housing 10 and a display assembly 20. The housing 10 surrounds the outer periphery of the display assembly 20. For example, when the electronic device is a mobile phone, the housing 10 can be the mid-frame of the mobile phone, and the display assembly 20 is the display screen of the mobile phone.

[0069] For ease of explanation, we introduce the first direction Z, the second direction X, and the third direction Y, such as Figure 1 As shown, the first direction Z is the thickness direction of the electronic device, and the second direction X and the third direction Y are both perpendicular to the first direction Z. For example, the second direction X is the width direction of the mobile phone, and the third direction Y is the length direction of the mobile phone.

[0070] Figure 2 This is a schematic diagram of the stacked structure of a display assembly in some implementations. For example... Figure 2As shown, the display assembly 20 includes a display cover plate 210 and a display panel 220 stacked along the first direction Z. The display cover plate 210 includes a first surface 1 and a second surface 2 distributed along the first direction Z. The display panel 220 is located on the side where the second surface 2 is located. That is, the first surface 1 is constructed as an outer surface that can contact the outside world, and the second surface 2 is constructed as an inner surface located inside the electronic device.

[0071] like Figure 2 As shown, the display assembly 20 also includes a connecting layer 230 located between the display cover 210 and the display panel 220. The connecting layer 230 is made of a light-transmitting material and has adhesive properties, so that the display cover 210 and the display panel 220 are bonded and fixed through the connecting layer 230.

[0072] like Figure 2 As shown, the display assembly 20 also includes a support layer 240, which is located on the side of the display panel 220 away from the display cover plate 210. The support layer 240 is used to cover the surface of the display panel 220 and can provide support and protection for the display panel 220.

[0073] like Figure 2 As shown, the display assembly 20 also includes a polarizing layer 250. The polarizing layer 250 can be located between the display cover 210 and the connecting layer 230, or between the connecting layer 230 and the display panel 220. The polarizing layer 250 is used to improve the display effect and contrast of the electronic device, thereby enhancing the user experience of the electronic device.

[0074] The display panel 220 has multiple arrayed light sources that can emit light into the display cover 210. After the light enters the display cover 210 from the second surface 2, the light will propagate to the first surface 1 and be refracted at the first surface 1 before leaving the display cover 210. Finally, the light will be transmitted to the human eye so that the human eye can see the content displayed on the display panel 220.

[0075] The first surface 1 of the display cover 210 can be constructed as a plane or a curved surface, and the second surface 2 can also be constructed as a plane or a curved surface.

[0076] In some embodiments, such as Figure 2 As shown, the first surface 1 and the second surface 2 of the display cover 210 are both constructed as planes, and the first surface 1 and the second surface 2 are both perpendicular to the first direction Z.

[0077] Figure 3 for Figure 2 A schematic diagram of the optical path of the display component in the diagram. Figure 3The incident light is represented by a short line followed by a dot, with an arrow indicating the direction of its propagation. The outgoing light is represented by a solid line, with an arrow indicating the direction of its propagation. For example... Figure 3 As shown, when light emitted from the display panel 220 is incident perpendicularly onto the second surface 2 along the first direction Z, the light also exits perpendicularly onto the first surface 1. That is, a portion of the incident light is perpendicular to the second surface 2, and the exiting light is perpendicular to the first surface 1. When a person's eye looks at the display assembly along the first direction Z, the exiting light propagating along the first direction Z can enter the eye, allowing the eye to see the content displayed on the display panel 220. The area with displayed content seen by the eye through the display cover 210 is the display area 260 of the electronic device. Figure 3 The area 260 is indicated by a dashed box, as shown in the image. Figure 3 As shown, the area of ​​display area 260 is the same as the area of ​​display panel 220.

[0078] Continue to refer to Figure 3 In the edge area of ​​the display cover 210, the light emitted by the edge light source of the display panel 220 is obliquely incident on the second surface 2, and the light is also obliquely exited on the first surface 1. This part of the light cannot reach the human eye, that is, the human eye cannot see the display content through the edge area of ​​the display cover 210, making the edge area of ​​the display cover 210 a black border area 270 of the electronic device. Figure 3 The area within the black border of 270 is indicated by a dashed box. Figure 3 As shown, the black border area 270 is located outside the display area 260.

[0079] The presence of the black border area 270 limits the size of the display area 260, based on Figure 2 and Figure 3 The structure shown requires increasing the overall size of the display assembly or the size of the display panel 220 in order to expand the display area 260, which would result in a larger overall size of the electronic device.

[0080] In view of this, it can be based on Figure 3 The structure shown adjusts the first surface 1 of the display cover 210, making the edge area of ​​the first surface 1 curved. By utilizing the principle of light refraction, the incident light incident at an angle is refracted at the curved surface into outgoing light parallel to the first direction X, so that the outgoing light in the edge area can propagate to the human eye, thereby visually reducing the area of ​​the black border area and improving the display effect and viewing experience.

[0081] Figure 4 This is a structural schematic diagram of the display cover in some embodiments. For example... Figure 4As shown, the first surface 1 includes a first surface 11 and a second surface 12. The first surface 11 is constructed as a plane and is perpendicular to the first direction Z. The second surface 12 is located on at least one side of the first surface 11 in the second direction X. The second surface 12 includes a first end 124, which is connected to the first surface 11. The second surface 12 is tangent to the first surface 11 at the first end 124, so that the second surface 12 is smoothly connected to the first surface 11, reducing the risk of sharp points on the first surface 1 and improving the display effect of the display cover and electronic device.

[0082] like Figure 4 As shown, the second surface 12 is constructed as a curved surface, that is, the corner position of the outer surface of the display cover is constructed as a curved surface. The projection of the display panel in the first direction Z overlaps with the projection of the first surface 11 in the first direction Z, and the projection of the display panel in the first direction Z overlaps with the projection of the second surface 12 in the first direction Z, so that the light emitted by the display panel can be obliquely propagated to the second surface 12.

[0083] In this embodiment, the second surface 12 is constructed as a curved surface, so that the incident light incident at an angle is refracted at the second surface 12 into outgoing light parallel to the first direction Z, so that the outgoing light in the edge area can propagate to the human eye, thereby reducing the area of ​​the black border area to improve the display effect and viewing experience.

[0084] Figure 5 for Figure 4 The diagram shows a partial optical path of the display cover in some embodiments. The display panel 220 has multiple light sources arranged in an array, for example, such as... Figure 5 As shown, the display panel 220 includes a first light source 221, a fourth light source 224, and a fifth light source 225 arranged sequentially along the second direction X. The first light source 221 is the outermost light source of the display panel 220 in the second direction X, and the first light source 221 is blocked by the second surface 12 in the first direction Z. The fifth light source 225 is blocked by the first surface 11 in the first direction Z. The fourth light source 224 is located between the first light source 221 and the fifth light source 225 in the second direction X. The fourth light source 224 can be blocked by the second surface 12 or by the first surface 11 in the first direction Z. The specific position of the fourth light source 224 is not specifically limited in this embodiment. In the design of the display cover, the light source on the display panel 220 can be flexibly selected as the fourth light source 224 according to actual needs.

[0085] A first ray emitted by the first light source 221 propagates obliquely to a first position 121 of the second surface 12, where the second surface 12 refracts the first ray into an outgoing light parallel to the first direction Z. A fourth ray emitted by the fourth light source 224 propagates obliquely to a first end 124 of the second surface 12, where the second surface 12 refracts the fourth ray into an outgoing light parallel to the first direction Z. A fifth ray emitted by the fifth light source 225 propagates perpendicularly to the first surface 11, allowing the fifth ray to pass perpendicularly through the display screen cover.

[0086] When the human eye looks at the display assembly along the first direction Z, the first ray, the fourth ray, and the fifth ray, which are incident at an angle, can all propagate to the human eye. The edge light of the display area seen by the human eye is the outgoing light of the first ray, such as... Figure 5 As shown, in the second direction X, the emitted light of the first ray is located outside the first light source 221, meaning that the size of the display area seen by the human eye in the second direction X is larger than the size of the display panel 220. Figure 3 Compared to the structure shown, the area of ​​the display area is significantly increased. The vertical distance H between the first position 121 and the first light source 221 in the second direction X is the single-sided dimension of the increased display area in the second direction X.

[0087] The vertical distance H satisfies: 0.16mm ≤ H ≤ 1.54mm. For example, the vertical distance between the first position 121 and the first light source 221 in the second direction X can be 0.16mm, 0.17mm, 0.18mm, 0.19mm, 0.2mm, 0.21mm, 0.22mm, 0.23mm, 0.24mm, 0.25mm, 0.26mm, 0.27mm, 0.28mm, 0.29mm, 0.3mm, 0.31mm, 0.32mm, 0.33mm, 0.34mm, 0.35mm, 0.36mm, 0.37mm, 0.38mm, 0.39mm, 0.4mm, 0.41mm, 0.42mm, 0.4mm. 3mm, 0.44mm, 0.45mm, 0.46mm, 0.47mm, 0.48mm, 0.49mm, 0.5mm, 0.51mm, 0.52mm, 0.53mm, 0.54mm, 0.55mm, 0.56mm, 0.57mm, 0.58mm, 0.59mm, 0.6mm, 0.6 1mm, 0.62mm, 0.63mm, 0.64mm, 0.65mm, 0.66mm, 0.67mm, 0.68mm, 0.69mm, 0.7mm, 0.71mm, 0.72mm, 0.73mm, 0.74mm, 0.75mm, 0.76mm, 0.77mm, 0.78mm, 0.7 9mm, 0.8mm, 0.81mm, 0.82mm, 0.83mm, 0.84mm, 0.85mm, 0.86mm, 0.87mm, 0.88mm, 0.89mm, 0.9mm, 0.91mm, 0.92mm, 0.93mm, 0.94mm, 0.95mm, 0.96mm, 0.9 7mm, 0.98mm, 0.99mm, 1mm, 1.1mm, 1.2mm, 1.3mm, 1.4mm, 1.5mm, 1.6mm, 1.7mm, 1.8mm, 1.9mm, 1.1mm, 1.11mm, 1.12mm, 1.13mm, 1.14mm, 1.15mm, 1.16mm, 1 .17mm, 1.18mm, 1.19mm, 1.2mm, 1.21mm, 1.22mm, 1.23mm, 1.24mm, 1.25mm, 1.26mm, 1.27mm, 1.28mm, 1.29mm, 1.3mm, 1.31mm, 1.32mm, 1.33mm, 1.34mm, 1 .35mm, 1.36mm, 1.37mm, 1.38mm, 1.39mm, 1.4mm, 1.41mm, 1.42mm, 1.43mm, 1.44mm, 1.45mm, 1.46mm, 1.47mm, 1.48mm, 1.49mm, 1.5mm, 1.51mm, 1.52mm, 1.53mm, 1.54mm, etc.

[0088] If the vertical distance is small, the reduction in the width of the black border area will be smaller, resulting in a smaller display area, which in turn affects the display effect and viewing experience.

[0089] If the vertical distance is large, the distance between the first position 121 and the first light source 221 in the second direction X will be large, resulting in a large overall size of the display cover, which is not conducive to the miniaturization of the display cover, display components and electronic devices.

[0090] Therefore, 0.16mm≤H≤1.54mm can reduce the width of the black border area, thereby increasing the area of ​​the display area, and can also reduce the distance between the first position and the first light source, so as to reduce the overall size of the display cover.

[0091] The second surface can be constructed as an arc surface, that is, the projection shape of the second surface in the plane enclosed by the first and second directions is part of a circle.

[0092] The second surface can also be constructed as an elliptical surface, that is, the projection shape of the second surface in the plane bounded by the first and second directions is part of an ellipse.

[0093] The second surface can also be constructed as a freeform surface. Freeform surfaces are characterized by asymmetry and non-rotational symmetry, which can provide a higher level of design freedom and performance optimization capabilities. By using freeform surfaces, higher optical performance can be achieved in a compact space, such as improving image quality, reducing chromatic aberration and distortion.

[0094] In some embodiments, such as Figure 5 As shown, the second surface 12 is constructed as a regularly shaped arc surface, that is, the display cover plate 210 is cut along the plane enclosed by the first direction Z and the second direction X, and the cross-sectional profile of the resulting second surface 12 is part of a circle.

[0095] Figure 6 This is a schematic diagram showing the angles of incidence and exit of light rays. (Refer to...) Figure 6 When the second surface 12 is constructed as a regularly shaped arc surface, the design steps for the arc surface are as follows.

[0096] S11: The light source at the outermost edge of the display panel 220 is designated as the first light source 221, and a fourth light source 22 is selected on the display panel 220.

[0097] S12: Based on parameters such as the overall size of the display cover, the size of the black border area, and the size of the black border reduction, determine the first angle α1 between the propagation direction of the first light ray within the display cover and the first direction Z. The outgoing light of the first light ray must be parallel to the first direction Z, that is, the angle between the propagation direction of the incident light and the propagation direction of the outgoing light of the first light ray is α1. Thus, the incident angle α1 of the incident light and the incident angle θ2 of the outgoing light satisfy: θ2=α1+θ1.

[0098] S13: According to Snell's law: sinθ2 / sinθ1=n1 / n2, n1 is the refractive index of the display cover, and n2 is the refractive index of air. Substituting θ2=α1+α1 into the above formula, we get: sin(α1+θ1) / sinθ1=n1 / n2. Since n1, n2 and α1 are all known quantities, we can calculate the incident angle α1 and the exit angle θ2 of the first ray, and thus determine the first normal 3 when the first ray is refracted on the arc surface.

[0099] S14: Based on the above steps S11 to S13, the second normal 4 when the fourth ray is refracted on the arc surface can also be determined.

[0100] S15: Determine the center of the arc based on the intersection of the first normal 3 and the second normal 4.

[0101] S16: Based on the vertical distance between the display panel 220 and the first surface in the first direction Z, and combined with the propagation direction of the fourth ray in the display cover, determine the position of the first end. Draw an arc based on the position of the first end and the center of the circle, so that the arc intersects the first ray and the fourth ray in sequence. The position where the arc intersects the first ray is the first position, and the position where the arc intersects the fourth ray is the first end, thus obtaining the arc-shaped second surface.

[0102] In this embodiment, the second surface 12 is constructed as an arc surface, which simplifies the shape of the second surface 12 and reduces the processing difficulty of the second surface 12, thereby helping to reduce the cost of the display cover 210 and the display assembly and electronic device having the display cover.

[0103] In other embodiments, the second surface 12 is constructed as an elliptical surface or a freeform surface. For example, by cutting the display cover 210 along the plane enclosed by the first direction Z and the second direction X, the cross-sectional profile of the resulting second surface 12 can be a part of an ellipse or other irregular curves.

[0104] Figure 7 for Figure 4 A partial optical path diagram of the display cover in some other embodiments. Figure 7 The example shows that the second face 12 is constructed as an elliptical surface. (See example...) Figure 7As shown, the display panel 220 includes a first light source 221, a second light source 222, a third light source 223, a fourth light source 224, and a fifth light source 225 arranged sequentially along the second direction X.

[0105] The first light source 221 is the outermost light source of the display panel 220 in the second direction X. The first light source 221 is blocked by the second surface 12 in the first direction Z. The fifth light source 225 is blocked by the first surface 11 in the first direction Z.

[0106] The second light source 222 is located between the first light source 221 and the fifth light source 225 in the second direction X. The third light source 223 is located between the second light source 222 and the fifth light source 225 in the second direction X. The fourth light source 224 is located between the third light source 223 and the fifth light source 225 in the second direction X.

[0107] The second light source 222 and the third light source 223 are blocked by the second surface 12 in the first direction Z. The fourth light source 224 can be blocked by the second surface 12 in the first direction Z or by the first surface 11 in the first direction Z. The specific position of the fourth light source 224 is not specifically limited in this embodiment. In the process of designing the display cover, the light source on the display panel 220 can be flexibly selected as the fourth light source 224 according to actual needs.

[0108] like Figure 7 As shown, the first light emitted by the first light source 221 propagates obliquely to the first position 121 of the second surface 12. The second surface 12 refracts the first light at the first position 121 into an outgoing light parallel to the first direction Z. The propagation direction of the first light in the display cover has a first angle α1 with the first direction Z.

[0109] The second light emitted by the second light source 222 propagates obliquely to the second position 122 of the second surface 12. The second surface 12 refracts the second light at the second position 122 into an outgoing light parallel to the first direction Z. The propagation direction of the second light within the display cover has a second angle α2 with the first direction Z.

[0110] The third light emitted by the third light source 223 propagates obliquely to the third position 123 of the second surface 12. The second surface 12 refracts the third light at the third position 123 into an outgoing light parallel to the first direction Z. The propagation direction of the third light within the display cover has a third angle α3 with the first direction Z.

[0111] The fourth light emitted by the fourth light source 224 propagates obliquely to the first end 124 of the second surface 12. The second surface 12 refracts the fourth light at the first end 124 into an outgoing light parallel to the first direction Z. The propagation direction of the fourth light within the display cover has a fourth angle α4 with the first direction Z.

[0112] The fifth ray emitted by the fifth light source 225 propagates vertically to the first surface 11, enabling the fifth ray to penetrate the display cover plate vertically. The angle between the propagation direction of the fifth ray in the display cover plate and the first direction Z is 0.

[0113] Furthermore, 0 < α4 < α3 < α2 < α1, and the angle between the tangent of the second surface 12 at each position and the second direction X gradually decreases along the direction closer to the first surface 11, so that the second surface can refract some light into light parallel to the first direction Z at each position, thereby increasing the amount of light transmitted to the human eye, thus improving the display effect and viewing experience.

[0114] In this embodiment, the second surface 12 is constructed as an elliptical surface or a freeform surface, so that the obliquely incident light emitted by the second light source 222 and the third light source 223 between the first light source 221 and the fourth light source 224 can also be transmitted to the human eye, so that the human eye can see more light emitted by the light sources between the first light source 221 and the fourth light source 224, thereby improving the display effect and viewing experience of the display cover, the display assembly with the display cover, and the electronic device.

[0115] Figure 8 This is a schematic diagram showing the angles of incidence and exit of light rays. (Refer to...) Figure 8 When the second surface 12 is constructed as an elliptical surface or a freeform surface, the design steps for the second surface 12 are as follows.

[0116] S21: The light source at the outermost edge of the display panel 220 is designated as the first light source 221, and the second light source 222, the third light source 223, and the fourth light source 22 are selected sequentially on the display panel 220.

[0117] S22: Based on parameters such as the overall size of the display cover, the size of the black border area, and the size of the reduced black border, determine the first angle α1 between the propagation direction of the first light ray within the display cover and the first direction Z.

[0118] S23: Based on parameters such as display effect and saturation, determine the second angle α2 between the propagation direction of the second light ray in the display cover and the first direction Z, the third angle α3 between the propagation direction of the third light ray in the display cover and the first direction Z, and the fourth angle α4 between the propagation direction of the fourth light ray in the display cover and the first direction Z. The first angle, the second angle, the third angle and the fourth angle decrease periodically.

[0119] S24: Determine the position of the first end based on the vertical distance between the display panel 220 and the first surface in the first direction Z, combined with the propagation direction of the fourth light ray within the display cover.

[0120] S25: Based on the distribution patterns of the first light source 221, the second light source 222, the third light source 223, and the fourth light source 224 in the second direction X, determine the distribution patterns of the emitted light of the first ray, the second ray, the third ray, and the fourth ray in the second direction X, so that the distribution patterns of the emitted light are the same as the distribution patterns of the light sources. For example, when the first light source 221, the second light source 222, the third light source 223, and the fourth light source 224 are equidistantly and uniformly distributed in the second direction X, the first included angle α1, the second included angle α2, the third included angle α3, and the fourth included angle α4 are uniformly varied so that the emitted light of the first ray, the second ray, the third ray, and the fourth ray are also equidistantly and uniformly distributed in the second direction X.

[0121] S26: Based on the distribution patterns of the emitted light from the first, second, third, and fourth rays, and considering that the propagation direction of the emitted light is parallel to the first direction Z, and taking into account the already determined position of the first end, draw the emitted light from the first, second, third, and fourth rays. The intersection of the emitted and incident light of the first ray is the first position, the intersection of the emitted and incident light of the second ray is the second position, and the intersection of the emitted and incident light of the third ray is the third position.

[0122] S27: Connect the first position, the second position, the third position and the first end with a smooth curve to form the outline of the second surface, thus obtaining the arc-shaped second surface.

[0123] In this implementation, the distribution pattern of the emitted light is the same as that of the light source, which can reduce the risk of the displayed content being distorted or incomplete as seen by the human eye, thereby improving the display effect and viewing experience.

[0124] Continue to refer to Figure 8 The emitted light of the first ray is the light at the very edge of the display area. Therefore, the position of the emitted light of the first ray affects the reduction effect of the black border area, and the position of the emitted light of the first ray is affected by the first included angle α1.

[0125] Therefore, the first included angle α1 satisfies: 10°≤α1≤50°. For example, the first included angle can be 10°, 15°, 20°, 25°, 30°, 35°, 40°, 45°, 50°, etc.

[0126] If the first included angle is small, the vertical distance between the emitted light of the first ray and the first light source in the second direction X is small, that is, the reduction of the black edge area is small, and the reduction effect of the black edge area is poor.

[0127] If the first included angle is large, the vertical distance between the emitted light of the first ray and the first light source in the second direction X is large, which makes the size of the display cover in the second direction X larger, which is not conducive to the miniaturization of the display cover, the display assembly and electronic devices having the display cover.

[0128] Therefore, 10°≤α1≤50° can improve the reduction effect of the black border area while reducing the overall size of the display cover, the display assembly with the display cover, and the electronic device, so as to facilitate the miniaturization of the display cover, the display assembly with the display cover, and the electronic device.

[0129] Figure 9 This is a schematic diagram of the propagation path of the first ray within the display screen cover, as shown below. Figure 9 As shown, the greater the propagation distance S of the first light ray within the display cover, the greater the reduction size H of the black border area. Therefore, with the first included angle being a fixed value, the propagation distance S of the first light ray within the display cover can also affect the reduction effect of the black border area. The propagation distance S of the first light ray within the display cover is affected by the thickness of the display cover.

[0130] Therefore, the propagation distance S of the first light ray within the display cover plate satisfies: 1mm≤S≤2mm. For example, the propagation distance of the first light ray within the display cover plate can be 1mm, 1.1mm, 1.2mm, 1.3mm, 1.4mm, 1.5mm, 1.6mm, 1.7mm, 1.8mm, 1.9mm, 2mm, etc.

[0131] If the propagation distance of the first light ray within the display cover is short, the reduction of the black border area will be small, and the reduction effect of the black border area will be poor.

[0132] If the propagation distance of the first light ray within the display cover is large, the size of the display cover in the first direction Z will be large, which is not conducive to the thinning and lightening of the display cover, the display assembly with the display cover, and electronic devices.

[0133] Therefore, 1mm≤S≤2mm can improve the reduction effect of the black border area while reducing the overall size of the display cover, the display assembly with the display cover, and the electronic device, so as to achieve the thinning and lightening of the display cover, the display assembly with the display cover, and the electronic device.

[0134] Based on the fact that the corner position of the first surface is constructed as a curved surface, the second surface can be constructed as a plane or as a curved surface that bends inward along the first direction Z towards the inside of the display cover.

[0135] Figure 10This is a schematic diagram of the stacked structure of a display assembly in some implementations. In some embodiments, such as Figure 10 As shown, the second surface 2 is constructed as a plane and is perpendicular to the first direction Z to simplify the overall structure of the display cover 210, thereby reducing the processing cost of the display cover 210 and thus reducing the cost of display components and electronic devices having the display cover 210.

[0136] For example, when the second surface 2 is constructed as a plane, the distance between the second surface and the second surface in the first direction Z is 2mm, and when the first angle between the first light ray and the first direction Z is 28.5°, the propagation distance S of the first light ray in the display cover plate 210 is 0.6mm, so that the single-sided reduction size of the black border area is 0.28mm.

[0137] Figure 11 This is a schematic diagram of the stacked structure of the display assembly in some other embodiments. In other embodiments, such as Figure 11 As shown, the second surface 2 is constructed as a curved surface, such that the thickness of the display cover 210 gradually decreases from the edge position to the middle position along the second direction X. The thickness of the display cover 210 refers to the dimension of the display cover 210 in the first direction Z.

[0138] Figure 12 This is a schematic diagram of the stacked structure of the display assembly in some other embodiments. Figure 13 for Figure 12 The diagram shows the structure of the display cover in some embodiments. In yet other embodiments, a portion of the second surface 2 is constructed as a curved surface, such as... Figure 12 and Figure 13 As shown, the second surface 2 includes a third surface 21 and a fourth surface 22. The third surface 21 is distributed along the first direction Z with the first surface 11, and the fourth surface 22 is distributed along the first direction Z with the second surface 12. The third surface 21 is constructed as a curved surface, and the fourth surface 22 is constructed as a plane. The fourth surface 22 is perpendicular to the first direction Z.

[0139] The third surface 21 can be constructed as an arc surface to simplify the structure of the second surface 2, thereby reducing the processing cost of the display cover 210. The third surface 21 can also be constructed as an elliptical surface or a freeform surface.

[0140] In this embodiment, the second surface 2 is constructed as a curved surface, that is, the entire second surface 2 is constructed as a curved surface, or a portion of the second surface 2 is constructed as a curved surface, such that the portion or the entire second surface 2 bends inward along the first direction Z towards the inside of the display cover, which can reduce the volume of the display cover, thereby reducing the material cost of the display cover. At the same time, it can reduce the weight of the display cover, thereby reducing the weight of the display assembly and electronic device having the display cover.

[0141] Continue to refer to Figure 13 In the first direction Z, the distance between the first surface 11 and the third surface 21 is greater than the distance between the second surface 12 and the fourth surface 22, which makes the thickness of the display cover 210 at the first surface 11 greater than the thickness at the second surface 12. That is, the edge thickness of the display cover 210 is larger and the middle thickness is smaller.

[0142] For example, the third surface 21 is constructed as a curved surface and the fourth surface 22 is constructed as a flat surface, so that the edge thickness of the display cover 210 is larger and the middle thickness is smaller. When the first angle between the first light and the first direction Z is 28.5°, the propagation distance S of the first light in the display cover 210 can be increased to 1.5mm, so that the single-sided reduction size of the black border area is 0.72mm.

[0143] In this embodiment, the edge thickness of the display cover 210 is greater than the center thickness, which reduces the overall weight of the display cover 210 by 2 / 3. Simultaneously, increasing the size of the edge position helps to increase the propagation distance of the first light within the display cover 210, further reducing the black border area and increasing the display area of ​​the display cover, the display assembly with the display cover, and the electronic device, thereby improving the display effect and viewing experience.

[0144] The distance L between the second surface 12 and the fourth surface 22 in the first direction Z satisfies: 0.3mm≤L≤1.5mm. For example, the distance between the second surface 12 and the fourth surface 22 in the first direction Z can be 0.3mm, 0.4mm, 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm, 1mm, 1.1mm, 1.2mm, 1.3mm, 1.4mm, 1.5mm, etc.

[0145] If the distance between the second surface 12 and the fourth surface 22 in the first direction Z is small, the thickness of the middle part of the display cover 210 is small, the strength of the display cover 210 is poor, and the risk of cracking and damage to the display cover 210 is high during processing, assembly, transportation, use and carrying.

[0146] If the distance between the second surface 12 and the fourth surface 22 in the first direction Z is large, the thickness of the middle part of the display cover 210 will be large, and the overall weight of the display cover 210 will be large, which is not conducive to achieving lightweighting of the display cover 210 and the display components and electronic devices with the display cover 210.

[0147] Therefore, a thickness of 0.3mm ≤ L ≤ 1.5mm can increase the strength of the display cover 210 and reduce the risk of damage during processing, assembly, transportation, use, and carrying, thereby extending the service life of the display cover 210 and the display components and electronic devices incorporating it. Simultaneously, it can reduce the overall weight of the display cover 210, facilitating the lightweighting of the display cover 210 and the display components and electronic devices incorporating it.

[0148] When the second surface is constructed as a whole or in part as a curved surface, the display panel connected to the second surface can be constructed as a flat panel, or the display panel connected to the second surface can be partially bent so that the display panel fits into the second surface.

[0149] In some embodiments, such as Figure 12 As shown, a portion of the second surface 2 is constructed as a curved surface, and the display panel is constructed as a flat panel. That is, the display panel 220 is fixed to the fourth surface 22 of the second surface 2. In the first direction Z, the display panel 220 is located in the projection area of ​​the fourth surface 22, and the projection of the display panel 220 and the third surface 21 do not overlap.

[0150] In this embodiment, the display panel 220 is constructed as a flat panel, which simplifies the processing of the display panel 220 and thus reduces the processing cost of the display panel 220.

[0151] Figure 14 This is a schematic diagram of the stacked structure of the display assembly in some other embodiments. Figure 15 for Figure 14 The diagram shows the structure of the display panel 220 in some embodiments. Please also refer to... Figure 14 and Figure 15 The display panel 220 includes a body portion 226 and a curved portion 227. The curved portion 227 is distributed along a first direction Z with the first surface 11 and the third surface 21. The body portion 226 is distributed along a first direction Z with the second surface 12 and the fourth surface 222. In the first direction Z, a portion of the structure of the display panel 220 is located in the projection area of ​​the first surface 11, and a portion of the structure of the display panel 220 is located in the projection area of ​​the second surface 12.

[0152] In this embodiment, the display panel 220 is partially bent to form a curved portion 227, which increases the contact area between the display panel 220 and the second surface 2, thereby improving the connection stability between the display panel 220 and the display cover plate 210. Simultaneously, it allows for an increase in the size of the display panel 220, thereby increasing the area of ​​the display region.

[0153] Figure 16 This is a structural schematic diagram of the display cover in some embodiments. For example... Figure 16 As shown, the first surface 11 includes a first end 124 and a second end 125. The first end 124 is connected to the second surface 12, and the first surface 11 is tangent to the second surface 12 at the first end 124. The second end 125 is connected to the second surface 2. The second end 125 can be configured as the first position described above, or it can be located on the side of the first position away from the first end 124.

[0154] In this embodiment, when the second end 125 is configured as the first position described above, the edge of the display area is the edge of the display cover 210, thereby reducing the size of the display cover 210, which is beneficial to reducing the overall size of the display assembly and electronic device, and facilitating the miniaturization of electronic devices.

[0155] When the second end 125 is located on the side opposite to the first end 124 in the first position, that is, when the first position is located between the first end 124 and the second end 125, at this time, Figure 17 A partial optical path diagram of the display cover in some embodiments is illustrated. For example... Figure 17 As shown, the light emitted by the display panel 220 can be refracted into the air through the area between the second end 125 and the first position 121 and propagated to the human eye on the side of the display cover 210, so that the human eye can see the content displayed by the display panel 220 from the side of the display cover 210.

[0156] In this embodiment, the first position 121 is located between the first end 124 and the second end 125, which expands the viewing angle of the display content of the display panel 220, thereby improving the viewing experience of the display cover 210 and the display assembly and electronic device having the display cover 210.

[0157] In some embodiments, the second end is directly connected to the second surface.

[0158] In other implementations, please refer to [the relevant documentation / reference]. Figure 17 The display cover 210 also includes a third surface 5, one end of which is connected to the second end 125, and the other end of which is connected to the second surface 2. The third surface 5 can be constructed as a plane or as a curved surface. Figure 17 The example shows that the third surface 5 is constructed as a plane.

[0159] In this embodiment, the third surface 5 is constructed as a plane, which simplifies the processing of the third surface 5 and helps to reduce the processing cost of the display cover 210, thereby reducing the cost of the display assembly and electronic device having the display cover 210.

[0160] The third surface 5 is constructed as a curved surface, so that the second end 125 is smoothly connected to the second surface 2, thereby reducing the risk of the display cover 210 having a sharp point, and further reducing the risk of the display cover 210 being damaged due to stress concentration at the sharp point, so as to improve the life of the display cover 210 and the display assembly and electronic equipment having the display cover 210.

[0161] For the same or similar parts among the various embodiments in this specification, please refer to each other.

Claims

1. A cover plate for a display screen, characterized in that The display screen cover includes a first surface and a second surface distributed along a first direction, wherein the first surface is oriented toward the human eye; The first surface includes a first surface and a second surface, the first surface being perpendicular to the first direction, and the second surface being located on at least one side of the first surface in a second direction, the second direction being perpendicular to the first direction; At least a portion of the second surface is constructed as a curved surface; The second surface is constructed as a curved surface, which is used to refract the light emitted by the display panel into parallel light so that the parallel light enters the human eye.

2. The cover plate for a display screen of claim 1, wherein, The second surface includes a first end, which is connected to the second surface; The second surface has a first position, which is located on the side of the second surface away from the first surface. The light from the first light source on the display panel that propagates to the first position is a first light ray. The second surface is used to refract the first light ray into a first outgoing light that propagates along the first direction. The first outgoing light ray is the edge light of the display area. The vertical distance H between the first position and the first light source in the second direction satisfies: 0.16mm≤H≤1.54mm.

3. The cover plate for a display screen of claim 2, wherein, The propagation distance S of the first light within the display screen cover satisfies: 1mm ≤ S ≤ 2mm.

4. The cover plate for a display screen of claim 1, wherein, The angle between the tangent of the second surface at each position and the second direction gradually decreases along the direction closer to the first surface.

5. The cover plate for a display screen of claim 4, wherein, The projection shape of the second surface in the plane enclosed by the first direction and the second direction is constructed as part of a circle, or the projection shape of the second surface in the plane enclosed by the first direction and the second direction is constructed as part of an ellipse, or the second surface is constructed as a freeform surface.

6. The cover plate for a display screen according to any one of claims 1 to 5, characterized in that The second surface includes a third surface and a fourth surface, wherein the third surface and the first surface are distributed along the first direction, and the fourth surface and the second surface are distributed along the first direction; The third surface is constructed as a curved surface, and the fourth surface is constructed as a plane.

7. The cover plate for a display screen of claim 6, wherein, The third surface is constructed as an arc surface.

8. The cover plate for a display screen of claim 6, wherein, In the first direction, the distance between the first surface and the third surface is greater than the distance between the second surface and the fourth surface.

9. The cover plate for a display screen of claim 8, wherein, The distance L between the second surface and the fourth surface in the first direction satisfies: 0.3mm ≤ L ≤ 1.5mm.

10. The cover plate for a display screen according to any one of claims 1 to 5, wherein The second surface includes a first end, which is connected to the second surface; The second surface has a first position, which is located on the side of the second surface away from the first surface. The light from the first light source on the display panel that propagates to the first position is a first light ray. The second surface is used to refract the first light ray into a first outgoing light that propagates along the first direction. The first outgoing light ray is the edge light of the display area. The first surface also includes a second end, which is connected to the second surface; The second end is located at the first position, or the second end is located on the side of the first position away from the first end.

11. The cover plate for a display screen of claim 10, wherein, The display cover also includes a third surface, one end of which is connected to the second end, and the other end of which is connected to the second surface; The third surface is constructed as a plane or a curved surface.

12. A display screen assembly characterized by, The display screen assembly includes: The display cover plate according to any one of claims 1 to 11; In the first direction, the display panel is located on the side of the second surface opposite to the first surface, and the display panel is used to emit light toward the display cover plate; The projection of the display panel in the first direction overlaps with the projection of the first surface in the first direction. The projection of the display panel in the first direction overlaps with the projection of the second surface in the first direction.

13. The display screen assembly of claim 12, wherein, The display panel includes a body portion and a curved portion, the curved portion being distributed along the first direction with the first surface, and the body portion being distributed along the first direction with the second surface.

14. An electronic device, comprising: The electronic device includes a display cover as described in any one of claims 1 to 11; or, the electronic device includes a display assembly as described in claim 12 or 13.

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