Display module and display device

Abstract

The display module and the display device are provided. The display module comprises a back plate, a light guide plate (2) fixed on the back plate, a rubber frame (1) covering the back plate, and a display panel on the rubber frame (1). The rubber frame (1) is in the shape of a ring frame, and comprises a bearing surface (11), a bottom surface opposite to the bearing surface (11), and an inner ring surface perpendicular to the bottom surface. The display panel covers the bearing surface (11), the bottom surface abuts against the back plate, and the light guide plate (2) is fixed in a fixing space surrounded by the inner ring surface. A first position of the bearing surface (11) of the rubber frame (1) is a curved surface, which is curved away from the display panel, so that the warping degree of the curved surface is a first warping degree. The first position is opposite to a second position of the bearing surface (11) and the display panel, and the second position is where light leakage of the display panel occurs. The first warping degree is consistent with the warping degree of the display panel in the curved condition. In this way, the stress of the display panel at the corners can be reduced, and the light leakage of the display module can be improved.

Description

Technical Field

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

[0002] With the continuous development of display modules, curved display modules have become a trend. Curved display modules typically mount the display panel on a backlight with a specific curvature. The curvature of the display module depends on the curvature of the backlight, which is mainly determined by the metal backplate and plastic frame in the backlight.

[0003] However, when the display panel is pressed or squeezed, the periphery of the display panel will undergo slight deformation, causing stress to concentrate at the corners of the display panel. This causes the liquid crystal of the display panel to be locally distorted at the corners, resulting in dark light leakage at the corners of the display panel, which in turn affects the display effect of the display module. Summary of the Invention

[0004] This invention provides a display module and display device to solve the problem of dark light leakage at the corners of the display panel in related technologies.

[0005] To solve the above-mentioned technical problems, the present invention is implemented as follows: In a first aspect, embodiments of the present invention provide a display module, including a back plate, a light guide plate fixed to the back plate, a frame covering the back plate, and a display panel located on the frame. The frame is annular and includes a bearing surface, a bottom surface opposite to the bearing surface, and an inner ring surface perpendicular to the bottom surface. The display panel covers the bearing surface, the bottom surface abuts against the back plate, and the light guide plate is fixed in the fixed space enclosed by the inner ring surface; The first position of the bearing surface of the frame is a curved surface, which is bent away from the display panel so that the warpage of the curved surface is a first warpage. The first position is the position where the bearing surface and the second position of the display panel are opposite each other. The second position is the position where the light leakage area of ​​the display panel is located. The first warpage is consistent with the warpage of the display panel when it is bent.

[0006] Optionally, the frame is a square frame, and at least one curved corner is included at each of the four corners of the frame. The bearing surface of the curved corner is a curved surface, and the length of the two intersecting sides of the curved corner is a first length, wherein the first length is the distance between two opposite sides of the area where light leakage occurs on the display panel.

[0007] Optionally, the curved surface angle includes a first warped surface and a second warped surface; The first warped surface and the second warped surface intersect. The projection of the first warped surface along the direction perpendicular to the display surface of the display panel is located at the position of the long side of the display panel. The projection of the second warped surface along the direction perpendicular to the display surface of the display panel is located at the position of the short side of the display panel. The long side and the short side are the two intersecting sides of the display panel, and the length of the long side is greater than the length of the short side. Both the first warped surface and the second warped surface are curved in a direction away from the display panel.

[0008] Optionally, when the light leakage of the display module is a first light leakage, the warp of the first warped surface is a second warp. When the light leakage of the display panel is the second light leakage, the warp of the first warped surface is the third warp. When the light leakage of the display panel is the third light leakage amount, the warp of the first warped surface is the fourth warp, wherein the second light leakage amount is within the preset range of light leakage of the display panel, the first light leakage amount is less than the second light leakage amount, and the third light leakage amount is greater than the second light leakage amount. The second warp is less than the third warp, and the third warp is less than the fourth warp.

[0009] Optionally, when the light leakage of the display panel is the first light leakage amount, the brightness of the light leakage point in the area where light leakage occurs on the display panel is less than 0.4 nits. When the light leakage of the display panel is the second light leakage amount, the brightness of the light leakage point in the area where light leakage occurs on the display panel is greater than or equal to 0.4 nits and less than 0.6 nits. When the light leakage of the display panel is the third light leakage amount, the brightness of the light leakage point in the area where light leakage occurs on the display panel is greater than or equal to 0.6 nits.

[0010] Optionally, when the warp of the first warped surface is the second warp, the line connecting the end of the curved surface and the end of the plane of the bearing surface is the first curve; when the warp of the first warped surface is the fourth warp, the line connecting the end of the curved surface and the end of the plane of the bearing surface is the second curve. Wherein, both the first curve and the second curve are tangent to the end of the plane of the bearing surface, and the curvature of the first curve is less than the curvature of the second curve. The plane of the bearing surface is any surface other than the curved surface. The end of the plane is the end of the plane that is close to the curved surface, and the end of the curved surface is the end of the curved surface that is away from the plane.

[0011] Optionally, when the warp of the first warped surface is the third warp, the line connecting the end of the curved surface and the end of the plane of the bearing surface is a first straight line. Wherein, the plane of the bearing surface is any surface other than the curved surface, the end of the plane is the end of the plane that is close to the curved surface, and the end of the curved surface is the end of the curved surface that is away from the plane.

[0012] Optionally, when the warp of the first warped surface is a second warp, the distance between the end of the curved surface and the plane is a first distance; When the warp of the first warped surface is the third warp, the distance between the end of the curved surface and the plane is the second distance; When the warp of the first warped surface is the fourth warp, the distance between the end of the curved surface and the plane is the third distance; Wherein, the first distance is less than the second distance, the second distance is less than the third distance, the end of the plane is the end of the plane that is close to the curved surface, and the end of the curved surface is the end of the curved surface that is far away from the plane.

[0013] Optionally, the second distance is equal to the first value, wherein the first value is the offset of the bearing surface in the direction away from the display panel when the light leakage of the display panel is within the preset range of light leakage.

[0014] Optionally, if the light leakage of the display panel is a first light leakage, the warp of the second warped surface is a fifth warp. When the light leakage of the display panel is the second light leakage, the warp of the second warped surface is the sixth warp. When the light leakage of the display panel is the third light leakage amount, the warp of the second warped surface is the seventh warp, wherein the second light leakage amount is the average light leakage amount when the display panel experiences light leakage, the first light leakage amount is less than the second light leakage amount, and the third light leakage amount is greater than the second light leakage amount. The fifth warp is less than the sixth warp, and the sixth warp is less than the seventh warp.

[0015] Optionally, when the warp of the second warped surface is the fifth warp, the line connecting the end of the curved surface and the end of the plane of the bearing surface is the third curve; when the warp of the second warped surface is the seventh warp, the line connecting the end of the curved surface and the end of the plane of the bearing surface is the fourth curve. Wherein, both the third curve and the fourth curve are tangent to the end of the plane of the bearing surface, and the curvature of the third curve is less than the curvature of the fourth curve. The plane of the bearing surface is any surface other than the curved surface. The end of the plane is the end of the plane that is close to the curved surface, and the end of the curved surface is the end of the curved surface that is far away from the plane.

[0016] Optionally, when the warp of the second warped surface is a sixth warp, the line connecting the end of the curved surface and the end of the plane of the bearing surface is a second straight line; Wherein, the plane of the bearing surface is any surface other than the curved surface, the end of the plane is the end of the plane that is close to the curved surface, and the end of the curved surface is the end of the curved surface that is away from the plane.

[0017] Optionally, when the warp of the second warped surface is a fifth warp, the distance between the end of the surface and the plane is a fourth distance; When the warp of the second warped surface is the sixth warp, the distance between the end of the surface and the plane is the fifth distance; When the warp of the second warped surface is the seventh warp, the distance between the end of the surface and the plane is the sixth distance; Wherein, the fourth distance is less than the fifth distance, the fifth distance is less than the sixth distance, the end of the plane is the end of the plane that is close to the curved surface, and the end of the curved surface is the end of the curved surface that is far away from the plane.

[0018] Optionally, the sixth distance is equal to the second value, which is the offset of the bearing surface in the direction away from the display panel when the light leakage of the display panel is within the preset range of light leakage.

[0019] Optionally, the warp of the first warped surface is equal to the warp of the second warped surface.

[0020] Optionally, all four corners of the frame are curved surface corners.

[0021] Secondly, embodiments of the present invention also provide a display device, the display device comprising the display module described in any embodiment of the first aspect.

[0022] As can be seen from the above embodiments, in this embodiment of the invention, since the first position of the bearing surface of the frame is curved, and the curved surface bends away from the display panel, so that the warpage of the curved surface is a first warpage, the first position is the position opposite to the second position of the bearing surface and the display panel, and the second position is the position between the two opposite sides of the area of ​​light leakage of the display panel, thus making the curved surface of the bearing surface of the frame and the area of ​​light leakage of the display panel in a relative position. In this way, when the display panel is deformed by pressing or squeezing, the stress can be dispersed by the curved surface of the bearing surface of the frame at the first position, avoiding stress concentration, thereby reducing the stress of the display panel at the corners, thus improving the light leakage problem of the display module, and improving the display effect of the display module. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This diagram illustrates a partial assembly of a display module according to an embodiment of the present invention. Figure 2 This is a schematic diagram illustrating the structure of a curved angle provided in an embodiment of the present invention; Figure 3 This indicates that the first warped surface of the frame provided in the embodiment of the present invention is along... Figure 2 One of the schematic diagrams of the cross-section along the AA direction; Figure 4 This indicates that the first warped surface of the frame provided in the embodiment of the present invention is along... Figure 2 The second schematic diagram of the cross-section along the AA direction; Figure 5 This indicates that the first warped surface of the frame provided in the embodiment of the present invention is along... Figure 2 The third schematic diagram of the cross-section along the AA direction; Figure 6 This indicates that the second warped surface of the frame provided in the embodiment of the present invention is along... Figure 2 One of the schematic diagrams of the cross-section in the BB direction; Figure 7 This indicates that the second warped surface of the frame provided in the embodiment of the present invention is along... Figure 2 The second schematic diagram of the cross-section in the BB direction; Figure 8 This indicates that the second warped surface of the frame provided in the embodiment of the present invention is along... Figure 2The third schematic diagram of the cross-section in the BB direction.

[0025] Figure label: 1: Frame; 2: Light guide plate; 11: Bearing surface; 111: Curved angle; 1111: First warped surface; 1112: Second warped surface; 11111: First curve; 11112: Second curve; 11113: First straight line; 11114: First distance; 11115: Second distance; 11116: Third distance; 11121: Third curve; 11122: Fourth curve; 11123: Second straight line; 11124: Fourth distance; 11125: Fifth distance; 11126: Sixth distance. Detailed Implementation

[0026] 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, not all, of the embodiments of the present invention. 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.

[0027] It should be understood that the phrase "one embodiment" or "an embodiment" throughout the specification means that a specific feature, structure, or characteristic related to the embodiment is included in at least one embodiment of the invention. Therefore, "in one embodiment" or "in an embodiment" appearing throughout the specification do not necessarily refer to the same embodiment. Furthermore, these specific features, structures, or characteristics can be combined in any suitable manner in one or more embodiments.

[0028] Reference Figure 1 , Figure 2 and Figure 3 This invention provides a display module, including a back plate, a light guide plate 2 fixed to the back plate, a frame 1 covering the back plate, and a display panel located on the frame 1. The frame 1 is annular and includes a bearing surface 11, a bottom surface opposite to the bearing surface 11, and an inner ring surface perpendicular to the bottom surface. The display panel covers the bearing surface 11, and the bottom surface abuts against the back plate. The light guide plate 2 is fixed in the fixed space enclosed by the inner ring surface. The bearing surface 11 of the frame 1 is curved at a first position, and the curved surface bends away from the display panel so that the warp of the curved surface is a first warp. The first position is the position where the bearing surface 11 and the second position of the display panel are opposite each other. The second position is the position where the light leakage area of ​​the display module is located. The first warp is consistent with the warp of the display panel when it is bent.

[0029] The backplate is a device that provides support for the display module. In this embodiment of the invention, the backplate may include any one of a stamped metal backplate, a glass backplate, and a composite material backplate. To ensure good heat dissipation, the backplate can be made of a composite material. During installation, it is necessary to control the gap between the heat-generating components in the display module and the backplate to ensure heat transfer.

[0030] The light guide plate 2 uses optical-grade acrylic sheet as the basic raw material, and then uses a material with extremely high reflectivity and no light absorption to print light guide points on the bottom surface of the optical-grade acrylic sheet, so that the light guide plate 2 can absorb the light emitted from the light-emitting component.

[0031] When the display panel is pressed or squeezed, the periphery of the display panel will undergo slight deformation, which will cause local distortion of the liquid crystal in the display panel, resulting in dark light leakage when the display panel is black.

[0032] Based on this, in this embodiment of the invention, the frame 1 includes a supporting surface 11, a bottom surface opposite to the supporting surface 11, and a side surface perpendicular to the bottom surface. It should be noted that the supporting surface 11 is the surface of the frame 1 that supports the display panel, and the bottom surface is the surface that abuts against the back panel. The frame 1 can be circular, square, or other irregularly shaped. The shape of the frame 1 is determined according to the shape of the light guide plate 2, and this embodiment of the invention does not limit this. The fixed space enclosed by the inner ring surface of the frame 1 is determined according to the shape of the frame 1. For example, when the light guide plate 2 is a square light guide plate, the frame 1 is a square ring-shaped frame, the inner ring surface of the frame 1 is rectangular, and the space enclosed by the inner ring surface of the frame 1 is a cuboid; when the light guide plate 2 is a circular light guide plate, the frame 1 is a circular ring-shaped frame, the inner ring surface of the frame 1 is circular, and the space enclosed by the inner ring surface of the frame 1 is cylindrical.

[0033] Furthermore, the bearing surface 11, perpendicular to the inner ring surface of the frame 1, is the surface on which the frame 1 supports the display panel, meaning the bearing surface 11 of the frame 1 is in contact with the display panel. The bearing surface 11 of the frame 1 has a curved surface at its first position, curving away from the display panel to achieve a first degree of warpage. Since the first position is the location of the second position of the display panel relative to the bearing surface 11, and the second position is where the light leakage area of ​​the display panel is located, the curved surface on the bearing surface 11 of the frame 1 and the light leakage area of ​​the display panel are in a relative position. This allows the bearing surface 11 of the frame 1 to absorb deformation of the display panel caused by pressure or compression.

[0034] As can be seen from the above embodiments, in this embodiment of the invention, since the first position of the bearing surface 11 of the frame 1 is a curved surface, the curved surface bends away from the display panel, so that the warpage of the curved surface is a first warpage. The first position is the position opposite to the second position of the bearing surface 11 and the display panel. The second position is the position between the two opposite sides of the area where light leakage occurs on the display panel. Therefore, the curved surface on the bearing surface 11 of the frame and the area where light leakage occurs on the display panel are in relative positions. In this way, when the display panel is deformed by pressing or squeezing, the stress can be dispersed by the curved surface of the bearing surface 11 of the frame 1, avoiding stress concentration, thereby reducing the stress on the display panel at the corners, thus improving the light leakage problem of the display module and improving the display effect of the display module.

[0035] Next, taking a square frame 1 as an example, we will introduce the bearing surface 11 of the frame 1 in detail as follows: In some embodiments, the frame 1 is a square frame, and the four corners of the frame 1 include at least one curved corner 111. The bearing surface 11 of the curved corner 111 is a curved surface, and the length of the two sides where the curved corner 111 intersects is a first length, wherein the first length is the distance between two opposite sides of the area where light leakage occurs in the display panel.

[0036] It should be noted that when the frame 1 is square, the area opposite to the light leakage area of ​​the display panel is located at one of the four corners of the frame 1. That is, ensuring that at least one corner of the frame 1 is a curved corner 111 can improve the light leakage problem of the display panel. The four corners of the frame 1 are the four intersection points between the two long sides and the two short sides of the frame 1. The lengths of the two intersecting sides of the curved corner 111 are equal to the distance between the two opposite sides of the light leakage area of ​​the display panel. This ensures that the curved corner 111 and the area where the light leakage occurs are in a relative position. Thus, the curved corner 111 disperses stress, avoids stress concentration, and reduces stress on the display panel at the corners, thereby improving the light leakage problem of the display module and enhancing the display effect. The first length is as follows: Figures 3 to 8 The length L in the figure represents.

[0037] Specifically, the curved angle 111 includes a first warped surface 1111 and a second warped surface 1112; the first warped surface 1111 and the second warped surface 1112 intersect, the projection of the first warped surface 1111 along the direction perpendicular to the display surface of the display panel is located at the position of the long side of the display panel, and the projection of the second warped surface 1112 along the direction perpendicular to the display surface of the display panel is located at the position of the short side of the display panel. The long side and the short side are the two intersecting sides of the display panel, and the length of the long side is greater than the length of the short side; both the first warped surface 1111 and the second warped surface 1112 are curved in a direction away from the display panel.

[0038] It should be noted that the projection of the first warped surface 1111 along the direction perpendicular to the display surface of the display panel is located at the position of the long side of the display panel, that is, the position of the first warped surface 1111 and the position of the long side of the display panel are opposite. The projection of the second warped surface 1112 along the direction perpendicular to the display surface of the display panel is located at the position of the short side of the display panel, that is, the position of the second warped surface 1112 and the position of the short side of the display panel are opposite. In this way, it can be ensured that the curved angle 111 formed by the first warped surface 1111 and the second warped surface 1112 is opposite to the corner of the display panel, thereby ensuring that the light leakage problem occurring at the corner of the display panel is improved.

[0039] Optional, such as Figure 3 As shown, when the light leakage of the display panel is the first light leakage amount, the warpage of the first warpage surface 1111 is the second warpage; as Figure 4 As shown, when the light leakage of the display panel is the second light leakage amount, the warpage of the first warpage surface 1111 is the third warpage; as Figure 5 As shown, when the light leakage of the display panel is the third light leakage, the warp of the first warp surface 1111 is the fourth warp. The second light leakage is within the preset range of light leakage of the display panel, the first light leakage is less than the second light leakage, and the third light leakage is greater than the second light leakage; the second warp is less than the third warp, and the third warp is less than the fourth warp.

[0040] It should be noted that the preset range is the range of light leakage of the display panel under average conditions, that is, when the display panel is in a state of moderate light leakage. Thus, when the light leakage of the display panel is the second light leakage amount, the warp of the first warp surface 1111 is the third warp, that is, when the display panel is in a state of moderate light leakage, the warp of the first warp surface 1111 is the third warp. Since the first light leakage amount is less than the second light leakage amount, and the third light leakage amount is greater than the second light leakage amount, therefore, when the light leakage of the display panel is the first light leakage amount, the warp of the first warp surface 1111 is the second warp, that is, when the display panel is in a state of slight light leakage, the warp of the first warp surface 1111 is the second warp, and when the display panel is in a state of severe light leakage, the warp of the first warp surface 1111 is the fourth warp. Furthermore, since the second warp is less than the third warp, and the third warp is less than the fourth warp, the display panel has a first warp surface 1111 with different warp degrees when the light leakage degree is different, which is more conducive to the targeted improvement of the light leakage problem of the display panel.

[0041] Furthermore, when the light leakage of the display panel 2 is the first light leakage amount, the brightness of the light leakage point in the area where light leakage occurs on the display panel 2 is less than 0.4 nits; when the light leakage of the display panel 2 is the second light leakage amount, the brightness of the light leakage point in the area where light leakage occurs on the display panel 2 is greater than or equal to 0.4 nits and less than 0.6 nits; when the light leakage of the display panel 2 is the third light leakage amount, the brightness of the light leakage point in the area where light leakage occurs on the display panel 2 is greater than or equal to 0.6 nits.

[0042] It should be noted that nits represent the luminous intensity per unit area. A higher nit value indicates a higher luminous intensity and a more severe degree of light leakage in the display panel 2. Specifically, in cases of mild light leakage, the brightness of the light leakage point in the affected area of ​​the display panel 2 is less than 0.4 nits. In cases of moderate light leakage, the brightness of the light leakage point in the affected area of ​​the display panel 2 is greater than or equal to 0.4 nits. In cases of severe light leakage, the brightness of the light leakage point in the affected area of ​​the display panel 2 is greater than or equal to 0.6 nits.

[0043] Optional, such as Figure 3 As shown, when the warp of the first warped surface 1111 is the second warp, the line connecting the end of the curved surface and the end of the plane of the bearing surface 11 is the first curve 11111, as shown. Figure 5As shown, when the warp of the first warped surface 1111 is the fourth warp, the line connecting the end of the curved surface and the end of the plane of the bearing surface 11 is the second curve 11112; wherein, both the first curve 11111 and the second curve 11112 are tangent to the end of the plane of the bearing surface 11, and the curvature of the first curve 11111 is less than the curvature of the second curve 11112. The plane of the bearing surface 11 is any surface of the bearing surface 11 other than the curved surface. The end of the plane is the end of the plane that is close to the curved surface, and the end of the curved surface is the end of the curved surface that is far away from the plane.

[0044] It should be noted that curvature refers to the rate of rotation of the tangent direction angle about a point on a curve with respect to the arc length. It is defined by differentiation and indicates the degree to which the curve deviates from a straight line. Since the curvature of the first warped surface 1111 is the second warp, the line connecting the end of the curved surface and the end of the plane of the bearing surface 11 is the first curve 11111. When the curvature of the first warped surface 1111 is the fourth warp, the line connecting the end of the curved surface and the end of the plane of the bearing surface 11 is the second curve 11112. Therefore, when the display panel is in a state of slight light leakage, the curvature of the first warped surface 1111 is less than the curvature of the display panel in a state of severe light leakage. Furthermore, since the stress on the display panel when it has only slight light leakage is less than the stress when it has severe light leakage, when the stress on the display panel increases, a bearing surface 11 with a greater degree of curvature is needed to disperse the stress. This allows the stress components to be distributed to the maximum extent on the first warped surface 1111, thereby ensuring that the stress on the display panel is reduced even when severe light leakage occurs. For example, Figure 3 , Figure 4 and Figure 5 As shown, the end of the curved surface is the location of point E, and the end of the flat surface of the bearing surface 11 is the location of point P. The bearing surface 11 at the corner of the frame 1 without curved surface treatment is as follows. Figure 3 , Figure 4 and Figure 5 The plane containing M is shown.

[0045] In other embodiments, such as Figure 4 As shown, when the warp of the first warped surface 1111 is the third warp, the line connecting the end of the curved surface and the end of the plane of the bearing surface 11 is the first straight line 11113; wherein, the plane of the bearing surface 11 is any surface of the bearing surface 11 other than the curved surface, the end of the plane is the end of the plane close to the curved surface, and the end of the curved surface is the end of the curved surface away from the plane.

[0046] It should be noted that when the warp of the first warp surface 1111 is the third warp, that is, when the display panel is in a state of moderate light leakage, the stress on the display panel when it is pressed or squeezed is at an average level, that is, the angle between the stress and the stress component on the bearing surface 11 is also at an average value. Thus, when the line connecting the end of the curved surface and the end of the flat surface of the bearing surface 11 is the first straight line 11113, the first warp surface 1111 is an inclined surface and tilts towards the end of the frame 1. In this way, once stress concentration occurs in the display panel, the stress can be dispersed towards the end of the frame 1, thereby dispersing the stress to the outside of the frame 1, which can also play the role of avoiding stress concentration.

[0047] Furthermore, in some embodiments, such as Figure 3 As shown, when the warp of the first warped surface 1111 is the second warp, the distance between the end of the curved surface and the plane is the first distance 11114; as Figure 4 As shown, when the warp of the first warped surface 1111 is the third warp, the distance between the end of the curved surface and the plane is the second distance 11115; as Figure 5 As shown, when the warp of the first warped surface 1111 is the fourth warp, the distance between the end of the curved surface and the plane is the third distance 11116; wherein, the first distance 11114 is less than the second distance 11115, the second distance 11115 is less than the third distance 11116, the end of the plane is the end of the plane close to the curved surface, and the end of the curved surface is the end of the curved surface away from the plane.

[0048] It should be noted that because the first distance 11114 is smaller than the second distance 11115, the distance between the end of the curved surface and the flat surface of the display panel under moderate light leakage is greater than the distance between the end of the curved surface and the flat surface of the display panel under slight light leakage. Thus, under increased stress, the distance for buffering the deformation of the display panel caused by pressing or squeezing towards the bearing surface 11 increases, thereby increasing the space for stress relief. Similarly, because the second distance 11115 is smaller than the third distance 11116, the distance between the end of the curved surface and the flat surface of the display panel under moderate light leakage is smaller than the distance between the end of the curved surface and the flat surface of the display panel under severe light leakage. Thus, under increased stress, the distance for buffering the deformation of the display panel caused by pressing or squeezing towards the bearing surface 11 increases, thereby increasing the space for stress relief. In summary, by ensuring the buffering distance for the deformation of the display panel caused by pressing or squeezing towards the bearing surface 11, sufficient space for stress relief can be ensured, and stress can be dispersed.

[0049] Furthermore, the second distance 11115 is equal to the first value, where the first value is the offset of the bearing surface 11 in the direction away from the display panel when the light leakage of the display panel is within the preset range of light leakage.

[0050] It should be noted that since the first value is the amount of offset of the bearing surface 11 away from the display panel when the light leakage of the display panel is within the preset range of light leakage, that is, the first value is the amount of offset of the bearing surface 11 away from the display panel when the display panel has moderate light leakage, in this way, when the first distance 11114 is less than the second distance 11115 and the second distance 11115 is less than the third distance 11116, it can be ensured that there is a suitable space for stress relief when the display panel is in a moderate light leakage condition and when the display panel is in a severe light leakage condition.

[0051] Similarly, such as Figure 6 As shown, when the light leakage of the display module is the first light leakage amount, the warpage of the second warped surface 1112 is the fifth warpage; as Figure 7 As shown, when the light leakage of the display module is the second light leakage amount, the warpage of the second warped surface 1112 is the sixth warpage; as Figure 8 As shown, when the light leakage of the display module is the third light leakage, the warp of the second warped surface 1112 is the seventh warp. The second light leakage is the average value of the light leakage when the display module has light leakage. The first light leakage is less than the second light leakage, and the third light leakage is greater than the second light leakage. The fifth warp is less than the sixth warp, and the sixth warp is less than the seventh warp.

[0052] It should be noted that the preset range is the range of light leakage of the display panel under the average condition, that is, the display panel is under the condition of moderate light leakage. Thus, when the light leakage of the display panel is the second light leakage amount, the warp of the second warp surface 1112 is the sixth warp, that is, the warp of the second warp surface 1112 is the sixth warp when the display panel is under the condition of moderate light leakage. Since the first light leakage amount is less than the second light leakage amount, and the third light leakage amount is greater than the second light leakage amount, therefore, when the light leakage of the display panel is the first light leakage amount, the warp of the second warp surface 1112 is the fifth warp, that is, when the display panel is under the condition of slight light leakage, the warp of the second warp surface 1112 is the fifth warp, and when the display panel is under the condition of severe light leakage, the warp of the second warp surface 1112 is the seventh warp. Furthermore, since the fifth warp is less than the sixth warp, and the sixth warp is less than the seventh warp, the display panel has a second warp surface 1112 with different warp degrees when the light leakage degree is different, which is more conducive to the targeted improvement of the light leakage problem of the display panel.

[0053] It should also be noted that when the first warp and the second warp have the same degree of light leakage, the brightness of the light leakage points in the area where light leakage occurs on the display panel 2 is equal. That is, when the light leakage amount of the display panel 2 is the first light leakage amount, the brightness of the light leakage points in the area where light leakage occurs on the display panel 2 is less than 0.4 nits; when the light leakage amount of the display panel 2 is the second light leakage amount, the brightness of the light leakage points in the area where light leakage occurs on the display panel 2 is greater than or equal to 0.4 nits and less than 0.6 nits; when the light leakage amount of the display panel 2 is the third light leakage amount, the brightness of the light leakage points in the area where light leakage occurs on the display panel 2 is greater than or equal to 0.6 nits.

[0054] Specifically, in some embodiments, such as Figure 6 As shown, when the warp of the second warped surface 1112 is the fifth warp, the line connecting the end of the curved surface and the end of the plane of the bearing surface 11 is the third curve 11121, as follows. Figure 8 As shown, when the warp of the second warped surface 1112 is the seventh warp, the line connecting the end of the curved surface and the end of the plane of the bearing surface 11 is the fourth curve 11122; wherein, the third curve 11121 and the fourth curve 11122 are both tangent to the end of the plane of the bearing surface 11, and the curvature of the third curve 11121 is less than the curvature of the fourth curve 11122. The plane of the bearing surface 11 is any surface of the bearing surface 11 other than the curved surface. The end of the plane is the end of the plane that is close to the curved surface, and the end of the curved surface is the end of the curved surface that is far away from the plane.

[0055] It should be noted that curvature refers to the rate of rotation of the tangent direction angle about a point on a curve with respect to the arc length. It is defined by differentiation and indicates the degree to which the curve deviates from a straight line. Since the line connecting the end of the curved surface 1112 to the end of the plane of the bearing surface 11 is the third curve 11121 when the curvature of the second curved surface 1112 is the fifth curvature, and the line connecting the end of the curved surface to the end of the plane of the bearing surface 11 is the fourth curve 11122 when the curvature of the second curved surface 1112 is the seventh curvature, the degree of curvature of the second curved surface 1112 when the display panel has a slight light leakage is less than the degree of curvature when the display panel has a severe light leakage. Furthermore, since the stress on the display panel when it has a slight light leakage is less than the stress on the display panel when it has a severe light leakage, when the stress on the display panel increases, a bearing surface 11 with a greater degree of curvature is needed to disperse the stress, so that the stress components can be dispersed to the greatest extent on the second warped surface 1112, thereby ensuring that the stress on the display panel is reduced when a severe light leakage occurs.

[0056] In some other embodiments, when the warp of the second warped surface 1112 is the sixth warp, the line connecting the end of the curved surface and the end of the plane of the bearing surface 11 is the second straight line 11123; wherein, the plane of the bearing surface 11 is any surface of the bearing surface 11 other than the curved surface, the end of the plane is the end of the plane close to the curved surface, and the end of the curved surface is the end of the curved surface away from the plane.

[0057] It should be noted that when the warp of the second warp surface 1112 is the sixth warp, that is, when the display panel is in a state of moderate light leakage, the stress on the display panel when it is pressed or squeezed is at an average level, that is, the angle between the stress and the stress component on the bearing surface 11 is also at an average value. Thus, when the line connecting the end of the curved surface and the end of the flat surface of the bearing surface 11 is the second straight line 11123, the second warp surface 1112 is an inclined surface and tilts towards the end of the frame 1. In this way, once stress concentration occurs in the display panel, the stress can be dispersed towards the end of the frame 1, thereby dispersing the stress to the outside of the frame 1, which can also play the role of avoiding stress concentration.

[0058] Optional, such as Figure 6 As shown, when the warp of the second warped surface 1112 is the fifth warp, the distance between the end of the curved surface and the plane is the fourth distance 11124; Figure 7 As shown, when the warp of the second warped surface 1112 is the sixth warp, the distance between the end of the curved surface and the plane is the fifth distance 11125; as Figure 8 As shown, when the warp of the second warped surface 1112 is the seventh warp, the distance between the end of the curved surface and the plane is the sixth distance 11126; wherein, the fourth distance 11124 is less than the fifth distance 11125, the fifth distance 11125 is less than the sixth distance 11126, the end of the plane is the end of the plane close to the curved surface, and the end of the curved surface is the end of the curved surface away from the plane.

[0059] It should be noted that, because the fourth distance 11124 is smaller than the fifth distance 11125, the distance between the end of the curved surface and the plane of the display panel under moderate light leakage is greater than the distance between the end of the curved surface and the plane of the display panel under slight light leakage. Thus, under increased stress, the distance for buffering the deformation of the display panel caused by pressing or squeezing towards the bearing surface 11 increases, thereby increasing the space for stress relief. Similarly, because the fifth distance 11125 is smaller than the sixth distance 11126, the distance between the end of the curved surface and the plane of the display panel under moderate light leakage is smaller than the distance between the end of the curved surface and the plane of the display panel under severe light leakage. Thus, under increased stress, the distance for buffering the deformation of the display panel caused by pressing or squeezing towards the bearing surface 11 increases, thereby increasing the space for stress relief. In summary, by ensuring the buffering distance for the deformation of the display panel caused by pressing or squeezing towards the bearing surface 11, sufficient space for stress relief can be ensured, ensuring that stress can be dispersed. For example, Figure 6 , Figure 7 and Figure 8 As shown, the end of the curved surface is the location of point E, and the end of the flat surface of the bearing surface 11 is the location of point Q. The bearing surface 11 at the corner of the frame 1 without curved surface treatment is as follows. Figure 6 , Figure 7 and Figure 8 The plane containing M is shown.

[0060] Optionally, the sixth distance 11126 is equal to the second value, which is the offset of the bearing surface 11 in the direction away from the display panel when the light leakage of the display module is within the preset range of light leakage.

[0061] It should be noted that since the second value is the amount of offset of the bearing surface 11 away from the display panel when the light leakage of the display panel is within the preset range of light leakage, that is, the second value is the amount of offset of the bearing surface 11 away from the display panel when the display panel has moderate light leakage, in this way, when the fifth distance 11125 is less than the sixth distance 11126, and the sixth distance 11126 is less than the seventh distance, it can be ensured that there is a suitable space for stress relief when the display panel has moderate light leakage and when the display panel has severe light leakage.

[0062] Furthermore, the warp of the first warped surface 1111 is equal to the warp of the second warped surface 1112.

[0063] It should be noted that since the warp of the first warp surface 1111 is equal to the warp of the second warp surface 1112, it can be ensured that the stress dispersion effect of the first warp surface 1111 and the second warp surface 1112 on the display panel is equal under any light leakage condition, thereby ensuring the improvement of the light leakage problem of the display panel.

[0064] Optionally, all four corners of the frame 1 are curved angles 111.

[0065] It should be noted that with all four corners of the frame 1 being curved (111°), the light leakage problem at the four corners of the display panel can be improved, further enhancing the display effect of the display module. As can be seen from the above embodiments, in this embodiment of the invention, since the first position of the bearing surface 11 of the frame 1 is a curved surface, the curved surface bends away from the display panel, so that the warpage of the curved surface is a first warpage. The first position is the position opposite to the second position of the bearing surface 11 and the display panel. The second position is the position between the two opposite sides of the area where light leakage occurs on the display panel. Therefore, the curved surface on the bearing surface 11 of the frame and the area where light leakage occurs on the display panel are in relative positions. In this way, when the display panel is deformed by pressing or squeezing, the stress can be dispersed by the curved surface of the bearing surface 11 of the frame 1, avoiding stress concentration, thereby reducing the stress on the display panel at the corners, thus improving the light leakage problem of the display module and improving the display effect of the display module.

[0066] Furthermore, embodiments of the present invention also provide a display device, which includes the display module described in any of the above embodiments. The beneficial effects of this display device are the same as those of the display module described in the above embodiments, and will not be repeated here.

[0067] It should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0068] Although alternative embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make further changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the alternative embodiments as well as all changes and modifications falling within the scope of the embodiments of the present invention.

[0069] Finally, it should be noted that in this document, relational terms such as "first" and "second" are used merely to distinguish one entity from another, and do not necessarily require or imply any such actual relationship or order between these entities. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that an article or terminal device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such an article or terminal device. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the article or terminal device that includes that element.

[0070] The technical solution provided by the present invention has been described in detail above. Specific examples have been used to illustrate the principle and implementation of the present invention. At the same time, for those skilled in the art, there will be changes in the specific implementation and application scope based on the principle and implementation of the present invention. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. A display module, comprising a back plate, a light guide plate fixed to the back plate, a frame covering the back plate, and a display panel located on the frame, characterized in that, The frame is annular, and includes a bearing surface, a bottom surface opposite to the bearing surface, and an inner ring surface perpendicular to the bottom surface. The display panel covers the bearing surface, the bottom surface abuts against the back plate, and the light guide plate is fixed in the fixed space enclosed by the inner ring surface; The first position of the bearing surface of the frame is a curved surface, which bends away from the display panel so that the warpage of the curved surface is a first warpage. The first position is the position where the bearing surface and the second position of the display panel are opposite each other. The second position is the position where the light leakage area of ​​the display panel is located. The first warpage is consistent with the warpage of the display panel when it is bent. The frame is a square frame, and at least one curved corner is included at each of the four corners of the frame. The bearing surface of the curved corner is a curved surface, and the length of the two sides where the curved corners intersect is a first length. The first length is the distance between two opposite sides of the area where light leakage occurs on the display panel. The curved surface angle includes a first warped surface and a second warped surface; The first warped surface and the second warped surface intersect. The projection of the first warped surface along the direction perpendicular to the display surface of the display panel is located at the position of the long side of the display panel. The projection of the second warped surface along the direction perpendicular to the display surface of the display panel is located at the position of the short side of the display panel. The long side and the short side are the two intersecting sides of the display panel, and the length of the long side is greater than the length of the short side. Both the first warped surface and the second warped surface are curved in a direction away from the display panel.

2. The display module according to claim 1, characterized in that, When the light leakage of the display module is a first light leakage, the warp of the first warped surface is a second warp. When the light leakage of the display panel is the second light leakage, the warp of the first warped surface is the third warp. When the light leakage of the display panel is the third light leakage amount, the warp of the first warped surface is the fourth warp, wherein the second light leakage amount is within the preset range of light leakage of the display panel, the first light leakage amount is less than the second light leakage amount, and the third light leakage amount is greater than the second light leakage amount. The second warp is less than the third warp, and the third warp is less than the fourth warp.

3. The display module according to claim 1, characterized in that, When the light leakage of the display panel is the first light leakage amount, the brightness of the light leakage point in the area where light leakage occurs on the display panel is less than 0.4 nits; When the light leakage of the display panel is the second light leakage amount, the brightness of the light leakage point in the area where light leakage occurs on the display panel is greater than or equal to 0.4 nits and less than 0.6 nits. When the light leakage of the display panel is the third light leakage amount, the brightness of the light leakage point in the area where light leakage occurs on the display panel is greater than or equal to 0.6 nits.

4. The display module according to claim 2, characterized in that, When the warp of the first warped surface is the second warp, the line connecting the end of the curved surface and the end of the plane of the bearing surface is the first curve; when the warp of the first warped surface is the fourth warp, the line connecting the end of the curved surface and the end of the plane of the bearing surface is the second curve. Wherein, both the first curve and the second curve are tangent to the end of the plane of the bearing surface, and the curvature of the first curve is less than the curvature of the second curve. The plane of the bearing surface is any surface other than the curved surface. The end of the plane is the end of the plane that is close to the curved surface, and the end of the curved surface is the end of the curved surface that is away from the plane.

5. The display module according to claim 2, characterized in that, When the warp of the first warped surface is the third warp, the line connecting the end of the curved surface and the end of the plane of the bearing surface is the first straight line; Wherein, the plane of the bearing surface is any surface other than the curved surface, the end of the plane is the end of the plane that is close to the curved surface, and the end of the curved surface is the end of the curved surface that is away from the plane.

6. The display module according to claim 4, characterized in that, When the warp of the first warped surface is the second warp, the distance between the end of the curved surface and the plane is the first distance; When the warp of the first warped surface is the third warp, the distance between the end of the curved surface and the plane is the second distance; When the warp of the first warped surface is the fourth warp, the distance between the end of the curved surface and the plane is the third distance; Wherein, the first distance is less than the second distance, the second distance is less than the third distance, the end of the plane is the end of the plane that is close to the curved surface, and the end of the curved surface is the end of the curved surface that is far away from the plane.

7. The display module according to claim 6, characterized in that, The second distance is equal to the first value, wherein the first value is the offset of the bearing surface in the direction away from the display panel when the light leakage of the display panel is within the preset range of light leakage.

8. The display module according to claim 4, characterized in that, When the light leakage of the display panel is the first light leakage, the warp of the second warped surface is the fifth warp. When the light leakage of the display panel is the second light leakage, the warp of the second warped surface is the sixth warp. When the light leakage of the display panel is the third light leakage amount, the warp of the second warped surface is the seventh warp, wherein the second light leakage amount is the average light leakage amount when the display panel experiences light leakage, the first light leakage amount is less than the second light leakage amount, and the third light leakage amount is greater than the second light leakage amount. The fifth warp is less than the sixth warp, and the sixth warp is less than the seventh warp.

9. The display module according to claim 8, characterized in that, When the warp of the second warped surface is the fifth warp, the line connecting the end of the curved surface and the end of the plane of the bearing surface is the third curve; when the warp of the second warped surface is the seventh warp, the line connecting the end of the curved surface and the end of the plane of the bearing surface is the fourth curve. Wherein, both the third curve and the fourth curve are tangent to the end of the plane of the bearing surface, and the curvature of the third curve is less than the curvature of the fourth curve. The plane of the bearing surface is any surface other than the curved surface. The end of the plane is the end of the plane that is close to the curved surface, and the end of the curved surface is the end of the curved surface that is far away from the plane.

10. The display module according to claim 8, characterized in that, When the warp of the second warped surface is the sixth warp, the line connecting the end of the curved surface and the end of the plane of the bearing surface is the second straight line; Wherein, the plane of the bearing surface is any surface other than the curved surface, the end of the plane is the end of the plane that is close to the curved surface, and the end of the curved surface is the end of the curved surface that is away from the plane.

11. The display module according to claim 8, characterized in that, When the warp of the second warped surface is the fifth warp, the distance between the end of the surface and the plane is the fourth distance; When the warp of the second warped surface is the sixth warp, the distance between the end of the surface and the plane is the fifth distance; When the warp of the second warped surface is the seventh warp, the distance between the end of the surface and the plane is the sixth distance; Wherein, the fourth distance is less than the fifth distance, the fifth distance is less than the sixth distance, the end of the plane is the end of the plane that is close to the curved surface, and the end of the curved surface is the end of the curved surface that is far away from the plane.

12. The display module according to claim 11, characterized in that, The sixth distance is equal to the second value, which is the offset of the bearing surface away from the display panel when the light leakage of the display panel is within the preset range of light leakage.

13. The display module according to claim 1, characterized in that, The warp of the first warped surface is equal to the warp of the second warped surface.

14. The display module according to claim 1, characterized in that, The four corners of the frame are all curved surface angles.

15. A display device, characterized in that, The display device includes the display module according to any one of claims 1-14.

Images