Display device

Abstract

The utility model provides a display device which comprises a backlight module which comprises a backlight source and a supporting structure located on the periphery of the backlight source. The liquid crystal display panel is located on the light emitting side of the backlight module, and the liquid crystal display panel is polygonal and comprises a display area and a peripheral area surrounding the display area; the buffer layer is located between the supporting structure and the liquid crystal display panel and is opposite to the peripheral area; the buffer layer comprises a plurality of first buffer pads and at least one second buffer pad, the first buffer pads are located at the corner positions of the liquid crystal display panel, and the second buffer pads are located between every two adjacent first buffer pads; the first buffer pad comprises at least one buffer strip, and the buffer strip is arranged opposite to the side edge of the liquid crystal display panel; the thickness of the first buffer pad is gradually reduced in the direction away from the second buffer pad located on the same side edge with the buffer strip; the hardness of the first buffer pad is larger than that of the second buffer pad and smaller than that of the supporting structure.

Description

Technical Field

[0001] This disclosure belongs to the field of display technology, and specifically relates to a display device. Background Technology

[0002] In a liquid crystal display device, the liquid crystal display panel is located on the light-emitting side of the backlight module. By controlling the deflection state of the liquid crystal in each pixel area of ​​the liquid crystal display panel, the amount of light emitted from the pixel area can be controlled, thereby realizing the display.

[0003] Current LCD displays are prone to light leakage in dark states. Utility Model Content

[0004] This disclosure provides a display device to solve the dark-state light leakage problem of the aforementioned liquid crystal display device.

[0005] This disclosure provides a display device, including:

[0006] A backlight module, the backlight module including a backlight source and a support structure located around the backlight source;

[0007] A liquid crystal display panel is located on the light-emitting side of the backlight module. The liquid crystal display panel is polygonal and includes a display area and a peripheral area surrounding the display area.

[0008] A buffer layer is located between the support structure and the liquid crystal display panel, and is disposed opposite to the peripheral area;

[0009] The buffer layer includes: a plurality of first buffer pads and at least one second buffer pad, wherein the first buffer pads are located at the corners of the liquid crystal display panel, and the second buffer pads are located between two adjacent first buffer pads; the first buffer pads include at least one buffer strip, which is disposed opposite to the side of the liquid crystal display panel; the thickness of the buffer strip gradually decreases along the direction away from the second buffer pad located on the same side as the buffer strip;

[0010] The hardness of the buffer strip is greater than that of the second buffer pad, but less than that of the support structure.

[0011] In some embodiments, the first buffer pad includes a plurality of buffer strips, and the plurality of buffer strips in the same first buffer pad are respectively disposed opposite to two adjacent sides of the liquid crystal display panel.

[0012] In some embodiments, the surface of the liquid crystal display panel facing the backlight module and the surface away from the backlight module are both curved surfaces, and the curved surfaces are bent toward the backlight module.

[0013] In some embodiments, an adhesive layer is provided between the first buffer pad and the liquid crystal display panel, and between the first buffer pad and the support structure.

[0014] In some embodiments, the Shore hardness of the buffer strip is between 40 and 70.

[0015] In some embodiments, the first cushioning pad is made of silicone, and the second cushioning pad is made of foam.

[0016] In some embodiments, the buffer strip extends along the corresponding side of the liquid crystal display panel, and the length of the buffer strip is 0.1 to 0.2 times the length of the corresponding side of the liquid crystal display panel.

[0017] In some embodiments, the difference between the maximum and minimum thickness of the buffer strip is between 1 and 1.5 mm.

[0018] In some embodiments, both the first cushioning pad and the second cushioning pad are made of light-shielding material.

[0019] In some embodiments, the orthographic projection of the buffer layer onto the support structure is a closed ring shape.

[0020] In some embodiments, the second cushioning pad and the cushioning strip have an overlapping projection on the support structure.

[0021] In some embodiments, the first buffer pad further includes a first protrusion integrally connected to the buffer strip, wherein the first protrusion overlaps with the orthographic projection of the second buffer pad on the reference plane;

[0022] And / or,

[0023] The second buffer pad includes a buffer pad body and a second protrusion integrally connected to the buffer pad body, wherein the second protrusion overlaps with the orthographic projection of the first buffer pad on the reference plane;

[0024] The reference surface is a plane that extends along the thickness direction of the liquid crystal display panel and is parallel to the side where the buffer strip and the second buffer pad are located.

[0025] In some embodiments, the first cushioning pad includes a first protrusion, the second cushioning pad includes a cushioning pad body and a second protrusion, the second protrusion overlaps with the orthographic projection of the first protrusion on the reference plane, and the thickness of either the first protrusion or the second protrusion is less than or equal to the maximum thickness of the cushioning pad body.

[0026] In some embodiments, the maximum thickness of the second cushioning pad is 0.9 to 1.1 times the maximum thickness of the cushioning strip.

[0027] In some embodiments, the support structure includes: a retaining wall and a support platform connected to the retaining wall, the retaining wall being arranged around the backlight, the support platform being arranged opposite to the peripheral area, and the buffer layer being disposed on the support platform. Attached Figure Description

[0028] Figure 1 This is a plan view of a liquid crystal display panel provided in some embodiments.

[0029] Figure 2 For along Figure 1 A cross-sectional view of line A-A' in the middle.

[0030] Figure 3 This is a schematic diagram of an LCD panel supported on a backlight module.

[0031] Figure 4 This is a schematic diagram of a display device provided in some embodiments of the present disclosure.

[0032] Figure 5 This is a plan view of the liquid crystal display panel and buffer layer provided in some embodiments of this disclosure.

[0033] Figure 6A For along Figure 5 A cross-sectional view of line C-C' in the middle.

[0034] Figure 6B For along Figure 5 A magnified view of region B in the middle.

[0035] Figure 7 This is another schematic diagram of a display device provided in some embodiments of the present disclosure.

[0036] Figure 8 This is a perspective view of a liquid crystal display panel provided in some embodiments of the present disclosure when the panel is a curved panel.

[0037] Figure 9 This is a schematic diagram of the support platform of the support structure provided in some embodiments of this disclosure. Detailed Implementation

[0038] To enable those skilled in the art to better understand the technical solutions of this disclosure, the disclosure will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0039] Unless otherwise defined, the technical or scientific terms used in this disclosure shall have the ordinary meaning understood by one of ordinary skill in the art to which this disclosure pertains. The terms “a,” “an,” “an,” “the,” and similar words used in this disclosure do not indicate quantity limitation and may indicate singular or plural. The terms “comprising,” “including,” “having,” and any variations thereof used in this disclosure are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or device that includes a series of steps or modules (units) is not limited to the listed steps or units, but may also include steps or units not listed, or may include other steps or units inherent to such processes, methods, products, or devices. The terms “connected,” “linked,” “coupled,” and similar words used in this disclosure are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. “Multiple” in this disclosure refers to two or more. “And / or” describes the relationship between related objects, indicating that three relationships may exist; for example, “A and / or B” can indicate: A alone, A and B simultaneously, or B alone. The character " / " generally indicates that the preceding and following objects are in an "or" relationship. The terms "first," "second," "third," etc., used in this disclosure are merely to distinguish similar objects and do not represent a specific ordering of objects. "Above," "below," "left," "right," etc., are only used to indicate relative positional relationships; when the absolute position of the described objects changes, the relative positional relationship may also change accordingly.

[0040] In the embodiments of this disclosure, the description of the numerical range "m~n" includes the endpoint values ​​m and n.

[0041] Figure 1 This is a plan view of a liquid crystal display panel provided in some embodiments. Figure 2 For along Figure 1 A sectional view of line A-A' in the middle. Figure 3 This is a schematic diagram of an LCD panel supported on a backlight module, as shown. Figures 1 to 3As shown, a backlight module provides backlight for a liquid crystal display panel 10, which is located on the light-emitting side of the backlight module. The liquid crystal display panel 10 has a display area AA and a peripheral area NA surrounding the display area AA. The display area AA includes multiple pixel areas, such as multiple red pixel areas, multiple green pixel areas, and multiple blue pixel areas. The liquid crystal display panel 10 includes an array substrate 11, a cell substrate 12, and a liquid crystal layer 13 and a sealant (not shown) disposed opposite to each other, with the sealant surrounding the liquid crystal layer 13. The array substrate 11 includes a first substrate 111 and a driving structure layer 112 on the first substrate 111. The driving structure layer 112 may include structures such as thin-film transistors, signal lines, and pixel electrodes. The cell substrate 12 includes a second substrate 121 and a color filter layer 122, a black matrix, and other structures on the second substrate 121. The color filter layer 122 may include color filters corresponding to each pixel area. Both the first substrate 111 and the second substrate 121 may be glass substrates. In addition, alignment layers are provided on both the side of the array substrate 11 facing the liquid crystal layer 13 and the side of the cell substrate 12 facing the liquid crystal layer 13 for aligning the liquid crystal molecules in the liquid crystal layer. The display area AA can be regarded as the area where multiple pixel areas are located.

[0042] In the liquid crystal display panel 10, the brightness of light emitted from the pixel area can be controlled by controlling the deflection of liquid crystal molecules in each pixel area, thereby realizing the display of the image.

[0043] For example, the backlight module includes a back plate 31, a light-emitting element 50, an optical film assembly 40, and a frame 20. The back plate 31 includes a bottom wall 311 and a side wall 312, which are connected and define a receiving space Va1. The light-emitting element 50 and the optical film assembly 40 are located in the receiving space Va1. The optical film assembly 40 may include, for example, a light guide plate 41, a diffuser sheet 42, a prism sheet 43, etc. The light-emitting element 50 is located on the light-incident surface side of the light guide plate 41, and the diffuser sheet 42 and the prism sheet 43 are located on the light-emitting surface side of the light guide plate 41. The frame 20 is located around the periphery of the back plate 31. For example, the frame 20 includes a baffle 21 and a support platform 22. The baffle 21 surrounds the back plate 31, and the support platform 22 is connected to the baffle 21. The support platform 22 is disposed opposite to the peripheral area NA of the liquid crystal display panel 10. The liquid crystal display panel 10 is supported on the support platform 22. To prevent the liquid crystal display panel 10 from being bumped or knocked, a foam layer 60 can be provided between the support platform 22 and the liquid crystal display panel 10. The foam layer 60 is bonded to the frame 20 and the liquid crystal display panel 10.

[0044] The inventors discovered that because the liquid crystal display panel 10 is bonded to foam layers 60 in two directions at the corners, while the foam layers 60 bonded to the liquid crystal display panel 10 at the sides away from the corners are strip-shaped structures extending in one direction, such as extending along the long side or the short side of the liquid crystal display panel 10, under the influence of gravity, the liquid crystal display panel 10 experiences stress in one direction at the sides away from the corners and stress in two directions at the corners, resulting in stress concentration at the corners. When stress concentration occurs in the array substrate 11 and the cell substrate 12 under pressure or tension, the properties of the liquid crystal layer 13 at the corresponding locations are also affected. For example, the dielectric constant and refractive index of the liquid crystal layer 13 of the corresponding molecules change, thus exhibiting optical anisotropy, which is the photoelastic effect (also known as stress birefringence). This can easily lead to dark light leakage at the corners of the liquid crystal display panel 10.

[0045] In addition, when the LCD panel 10 is a curved panel, the stress concentration problem at the corners is more obvious, and dark light leakage is more likely to occur.

[0046] Related technologies address the issue of light leakage in the dark state by thinning the glass substrate, but this increases the chance of screen breakage, and the thinning process significantly increases product costs.

[0047] To address the aforementioned technical problems, this disclosure provides a display device. Figure 4 This is a schematic diagram of a display device provided in some embodiments of the present disclosure, such as... Figure 4 As shown, the display device includes a backlight module, a liquid crystal display panel 10, and a buffer layer 90. The backlight module includes a backlight source for providing backlight to the liquid crystal display panel 10 and a support structure 2 located around the backlight source. The liquid crystal display panel 10 is located on the light-emitting side of the backlight module. The liquid crystal display panel 10 is polygonal and includes a display area AA and a peripheral area NA surrounding the display area AA. In this embodiment, a rectangular liquid crystal display panel 10 is used as an example for illustration.

[0048] The buffer layer 90 is located between the support structure 2 and the liquid crystal display panel 10, and is positioned opposite to the peripheral area NA. Figure 5 This is a plan view of the liquid crystal display panel and buffer layer provided in some embodiments of this disclosure. Figure 6A For along Figure 5 A sectional view of line C-C' in the middle. Figure 6B For along Figure 5 A magnified view of region B in the middle, as shown below. Figures 5 to 6BAs shown, the buffer layer 90 includes a plurality of first buffer pads 91 and at least one second buffer pad 92. The first buffer pads 91 are located at the corners of the liquid crystal display panel 10, and the second buffer pads 92 are located between two adjacent first buffer pads 91. Each first buffer pad 91 includes at least one buffer strip 911, and each buffer strip 911 is disposed opposite to one side of the liquid crystal display panel 10. The thickness of the buffer strip 911 gradually decreases along the direction away from the second buffer pad 92 located on the same side as the buffer strip 911. That is, if the second buffer pad 92 located on the same side of the liquid crystal display panel 10 as the buffer strip 911 is considered as a reference buffer pad, then the thickness of the buffer strip 911 gradually decreases along the direction away from the reference buffer pad.

[0049] In addition, the hardness of the buffer strip 911 is greater than that of the second buffer pad 92, but less than that of the support structure 2.

[0050] In this embodiment of the disclosure, the support structure 2 can be a plastic frame 20 or other structures, such as a support structure formed by bending the side wall of the back plate.

[0051] In this embodiment, a first buffer pad 91 with higher hardness is provided at the corner of the liquid crystal display panel 10, and a second buffer pad 92 with lower hardness is provided between two adjacent first buffer pads 91. The thickness of the first buffer pad 91 decreases the further away from the second buffer pad 92 (i.e., the closer to the corner of the liquid crystal display panel 10). This allows for more effective mitigation of stress concentration issues closer to the corner, eliminating the need to thin the glass substrate of the liquid crystal display panel 10 and reducing the risk of screen breakage. Furthermore, it improves the supporting strength of the liquid crystal display panel 10.

[0052] In some examples, such as Figure 5 As shown, each corner of the liquid crystal display panel 10 is provided with the aforementioned first buffer pad 91, thereby improving the light leakage at the corner positions.

[0053] In some examples, such as Figure 5 As shown, the first buffer pad 91 includes multiple buffer strips 911, and the multiple buffer strips 911 in the same first buffer pad 91 are respectively arranged opposite to two adjacent sides of the liquid crystal display panel 10. Figure 5 The first buffer pad 91 includes two buffer strips 911 as an example for illustration. Of course, the first buffer pad 91 may also include more buffer strips 911, such as 4 or 6.

[0054] In some examples, the liquid crystal display panel 10 can be a planar product, that is, the surface of the liquid crystal display panel 10 away from the backlight module and the surface facing the backlight module are both planar; preferably, embodiments of this disclosure are particularly applicable to curved products, wherein, as Figure 8 As shown, both the surface of the liquid crystal display panel 10 facing the backlight module and the surface away from the backlight module are curved, with the curved surfaces curving towards the backlight module. This curved surface can be a portion of a cylindrical surface.

[0055] In some embodiments, the Shore hardness of the buffer strip 911 is between 40 and 70 to prevent insufficient cushioning force and breakage of the liquid crystal display panel 10 due to excessive hardness of the first buffer pad 91; at the same time, it prevents unstable support of the liquid crystal display panel 10 due to insufficient hardness of the buffer strip 911. For example, the Shore hardness of the buffer strip 911 is 40, 45, 50, 55, 60, 65, or 70.

[0056] In some embodiments, the Shore hardness of the second buffer pad 92 is less than 40, for example, less than 25, thereby providing a buffering force for the liquid crystal display panel 10 and preventing the liquid crystal display panel 10 from being damaged.

[0057] For example, the first cushioning pad 91 is made of silicone, and the second cushioning pad 92 is made of foam.

[0058] In some embodiments, an adhesive layer is provided between the first buffer pad 91 and the support structure 2, thereby improving the connection stability between the first buffer pad 91 and the support structure 2. For example, the adhesive layer has a viscosity of not less than 1800 gf / 25 mm to ensure reliable bonding.

[0059] In some embodiments, an adhesive layer may also be provided between the first buffer pad 91 and the liquid crystal display panel 10 to improve the connection stability between the first buffer pad 91 and the liquid crystal display panel 10. Of course, an adhesive layer may not be provided between the first buffer pad 91 and the liquid crystal display panel 10, and the liquid crystal display panel 10 and the first buffer pad 91 may be fixed together by the housing of the display device (e.g., the front frame described below).

[0060] In some embodiments, such as Figure 5 As shown, each buffer strip 911 extends along the corresponding side of the liquid crystal display panel 10. For example, if the liquid crystal display panel 10 is rectangular, the first buffer pad 91 includes two buffer strips 911. One buffer strip 911 is adjacent to and extends along the long side of the liquid crystal display panel 10; the other buffer strip 911 is adjacent to and extends along the short side of the liquid crystal display panel 10. The length of the buffer strip 911 is 0.1 to 0.2 times the length of the corresponding side of the liquid crystal display panel 10, thereby ensuring that the buffer layer 90 as a whole can buffer the liquid crystal display panel 10 while improving the problem of stress concentration at the corners of the liquid crystal display panel 10. For example, the length of the buffer strip 911 is 0.1 times, 0.15 times, or 0.2 times the length of the corresponding side.

[0061] For example, the width of the buffer strip 911 may be equal to or approximately equal to the width of the second buffer pad 92.

[0062] For example, multiple buffer strips 911 of the same first buffer pad 91 can be spliced ​​together; or they can be connected into a single structure for ease of production.

[0063] In some embodiments, the difference between the maximum and minimum thickness of the buffer strip 911 is between 1 and 1.5 mm, thereby improving the stress concentration problem at the corner of the liquid crystal display panel 10 while preventing any impact on the curvature of the liquid crystal display panel 10.

[0064] For example, the difference between the maximum and minimum thickness of the buffer strip 911 is between 1 and 1.1 mm, or between 1.1 and 1.2 mm, or between 1.2 and 1.3 mm, or between 1.4 and 1.5 mm, or between 1.3 and 1.5 mm.

[0065] For example, the maximum thickness of the buffer strip 911 is 1.5 mm, and the minimum thickness is 0.3 mm. In practical applications, when the liquid crystal display panel 10 is a curved panel, the difference between the maximum and minimum thickness of the buffer strip 911 can be set according to the curvature of the liquid crystal display panel 10.

[0066] Among them, such as Figure 6A As shown, the buffer strip 911 is wedge-shaped and has a first longitudinal section that is parallel to both the extension direction of the buffer strip 911 and the thickness direction of the backlight module. In one example, the first longitudinal section of the buffer strip 911 is trapezoidal, or approximately trapezoidal.

[0067] In some embodiments, both the first buffer pad 91 and the second buffer pad 92 are made of light-shielding material to reduce or prevent light leakage from the backlight module. For example, the first buffer pad 91 and the second buffer pad 92 can be made of dark-colored material such as black.

[0068] In some embodiments, such as Figure 5 As shown, the orthographic projection of the buffer layer 90 onto the support structure 2 is a closed ring shape.

[0069] In some embodiments, such as Figure 6A As shown, the second buffer pad 92 and the buffer strip 911 overlap on the support structure 2, thereby preventing the light from the backlight module from leaking out in the vertical direction due to the gap between the first buffer pad 91 and the second buffer pad 92.

[0070] In some embodiments, such as Figure 6BAs shown, the orthographic projections of the second buffer pad 92 and the buffer strip 911 on the reference plane overlap, thereby preventing light leakage in the horizontal direction due to gaps between the first buffer pad 91 and the second buffer pad 92. The reference plane is a plane extending along the thickness direction of the liquid crystal display panel 10 and parallel to the side edges where the buffer strip 911 and the second buffer pad 92 are located.

[0071] In some embodiments, the second buffer pad 92 and the buffer strip 911 can simultaneously satisfy the following: the orthographic projections of the second buffer pad 92 and the buffer strip 911 on the reference plane overlap (see...). Figure 6B As shown), and the orthographic projections of the second buffer pad 92 and the buffer strip 911 onto the support structure 2 overlap (see...). Figure 6A (As shown).

[0072] In some embodiments, such as Figure 6B As shown, the first buffer pad 91 further includes a first protrusion 912 integrally connected to the buffer strip 911, and the first protrusion 912 overlaps with the orthographic projection of the second buffer pad 92 on the reference plane. And / or, the second buffer pad 92 includes a buffer pad body 921 and a second protrusion 922 integrally connected to the buffer pad body 921, and the second protrusion 922 overlaps with the orthographic projection of the first buffer pad 91 on the reference plane.

[0073] In one example, the first buffer pad 91 includes a first protrusion 912 corresponding to each buffer strip 911, and the second buffer pad 92 includes a buffer pad body 921 and second protrusions 922 located at both ends of the buffer pad body 921. The orthographic projections of the second protrusions 922 and the first protrusions 912 on the reference plane overlap. For example, the first protrusion 912 may be located on the side of the second protrusion 922 closer to the central axis of the liquid crystal display panel 10, or the first protrusion 912 may be located on the side of the second protrusion 922 away from the central axis of the liquid crystal display panel 10. For example, the orthographic projections of the first protrusion 912 and the second protrusion 922 on the reference plane may coincide. For example, a portion of the second protrusion 922 overlaps with the orthographic projection of the first protrusion 912 on the reference plane, and another portion of the second protrusion 922 overlaps with the orthographic projection of the first protrusion 912 on the support structure 2. In this case, the orthographic projections of the first protrusion 912 and the second protrusion 922 on the reference plane do not completely coincide.

[0074] In some embodiments, the maximum thickness of the second buffer pad 92 is 0.9 to 1.1 times the maximum thickness of the buffer strip 911, thereby preventing significant step differences in the buffer layer 90 and ensuring stable support of the liquid crystal display panel 10. For example, the maximum thickness of the second buffer pad 92 is equal to the maximum thickness of the first buffer pad 91. Exemplarily, the first buffer pad 91 includes the aforementioned first protrusion 912, and the second buffer pad 92 includes the aforementioned buffer pad body 921 and the second protrusion 922. The orthographic projections of the first protrusion 912 and the second protrusion 922 on the reference plane overlap, and the thickness of the buffer pad body 921 is uniformly distributed at various positions. The maximum thickness of the second buffer pad 92 is the same as the thickness of the buffer pad body 921. In one example, the thickness of the second protrusion 922 is the same as the thickness of the buffer pad body 921, that is, the overall thickness of the second buffer pad 92 is uniform. In another example, a portion of the second protrusion 922 overlaps with the orthographic projection of the buffer strip 911 on the support structure 2 (e.g., Figure 6A As shown), the maximum thickness of the second protrusion 922 is less than the maximum thickness of the buffer pad body 921.

[0075] For example, the thickness of each of the first protrusion 912 and the second protrusion 922 is less than or equal to the maximum thickness of the cushioning pad body 921. For instance, the thickness of each of the first protrusion 912 and the second protrusion 922 is equal to the maximum thickness of the cushioning pad body 921.

[0076] In some embodiments, such as Figure 4 As shown, the backlight includes a backplate 31, a light-emitting element 50, and an optical film assembly 40. The backplate 31 includes a bottom wall 311 and a side wall 312 connected to the bottom wall 311. For example, the side wall 312 is integrated with the bottom wall 311. The bottom wall 311 and the side wall 312 define a receiving space Va1, within which the light-emitting element 50 and the optical film assembly 40 are located.

[0077] In some embodiments, the backplate 31 may be formed of a material with high thermal conductivity, thereby improving the heat dissipation effect of the display module.

[0078] In some embodiments, such as Figure 4 As shown, multiple reinforcing ribs 32 are provided on the bottom wall 311 of the back plate 31 to improve the strength of the back plate 31.

[0079] For example, the reinforcing rib 32 has an annular boundary, which can be a rectangular ring, an elliptical ring, or an irregular ring. There can be multiple reinforcing ribs 32; for example, multiple reinforcing ribs 32 include a first reinforcing rib and multiple second reinforcing ribs. The first reinforcing rib is located at the edge of the bottom wall 311, thereby improving the overall strength of the bottom wall 311. The annular boundary of each second reinforcing rib is located within the area surrounded by the annular boundary of the first reinforcing rib. Each reinforcing rib 32 can be formed by stamping the bottom wall 311. For example, a portion of the bottom wall 311 is stamped away from the liquid crystal display panel 10 to form a second reinforcing rib; a portion of the bottom wall 311 is stamped towards the liquid crystal display panel 10 to form a first reinforcing rib.

[0080] In some embodiments, such as Figure 4 As shown, the optical film assembly 40 may include a light guide plate 41, a diffuser plate 42, and a prism sheet 43. The light guide plate 41 includes a light-emitting surface and a bottom surface disposed opposite each other, and a light-incident surface connecting the light-emitting surface and the bottom surface. A light-emitting element 50 is located on the light-incident surface side of the light guide plate 41 to emit light towards the light guide plate 41. The light-emitting element 50 may include a light-emitting diode disposed on a lamp plate 51. The light guide plate 41 is used to internally reflect the light emitted by the light-emitting element 50 before it exits from the light-emitting surface. After the light guide effect of the light guide plate 41, the light emitted by the light-emitting element forms a surface light source. The diffuser plate 42 is located on the light-emitting surface side of the light guide plate 41 to diffuse the light emitted by the light guide plate 41, thereby improving the uniformity of light distribution. The prism sheet 43 is located on the side of the diffuser plate 42 away from the bottom wall 311 of the backplate 31, and is used to improve the forward light emission brightness of the backlight module.

[0081] The light guide plate 41 may have one light incident surface, and a light emitting element 50 is provided on one side of the light guide plate 41; or, the light guide plate 41 may have two light incident surfaces, and a light emitting element 50 may be provided on both sides of the light guide plate 41, so that the light from the light emitting element 50 enters the light guide plate 41 from both sides.

[0082] In one example, the optical film assembly 40 may also include a reflective sheet (not shown) located on the side of the light guide plate 41 away from the liquid crystal display panel 10, for reflecting light emitted from the bottom surface of the light guide plate 41, thereby improving light utilization.

[0083] In some embodiments, such as Figure 4As shown, the support structure 2 is a frame 20, which includes a retaining wall 21 and a support platform 22 connected to the retaining wall 21. The retaining wall 21 is arranged around the backlight, specifically, it is arranged around the side wall 312. The support platform 22 is located on the side of the side wall 312 and the optical film group 40 facing the liquid crystal display panel 10, and the support platform 22 is arranged opposite to the peripheral area NA. That is, the orthographic projection of the display area AA on the bottom wall 311 is outside the orthographic projection of the support platform 22 on the bottom wall 311, and the orthographic projection of the peripheral area NA on the bottom wall 311 overlaps with the orthographic projection of the support platform 22 on the bottom wall 311. A buffer layer 90 is provided on the support platform 22. For example, an adhesive layer is provided between the buffer layer 90 and the support platform 22, and between the buffer layer 90 and the liquid crystal display panel 10.

[0084] Among them, such as Figure 4 As shown, a third buffer pad 53 may be provided between the support platform 22 and the optical film assembly 40 to prevent the optical film assembly 40 from being damaged by the pressure of the support platform 22. The third buffer pad 53 may include a foam pad, and an adhesive layer may be provided between the third buffer pad 53 and the support platform 22 and the optical film assembly 40.

[0085] The liquid crystal display panel 10 includes an array substrate 11 and a counter substrate 12 disposed opposite to each other, and a liquid crystal layer 13 located between them. The array substrate 11 is located on the side of the counter substrate 12 closer to the optical film group 40, and includes a first substrate and devices such as thin-film transistors and pixel electrodes disposed on the first substrate. The counter substrate 12 includes a second substrate and a color filter layer, a black matrix, etc. disposed on the second substrate. For example, both the first substrate and the second substrate are glass substrates. In addition, the liquid crystal display panel 10 also includes a first polarizer 15 and a second polarizer 14. The first polarizer 15 is located on the side of the array substrate 11 away from the counter substrate 12, and the second polarizer 14 is located on the side of the counter substrate 12 away from the array substrate 11. The orthographic projection of the first polarizer 15 on the bottom wall 311 of the back plate 31 can be outside the orthographic projection of the support stage 22 on the bottom wall 311, thereby reducing the overall thickness of the display module.

[0086] As described above, the liquid crystal display panel 10 in this embodiment can be a curved panel. In this case, the support surface of the support platform 22 for supporting the liquid crystal display panel 10 is approximately located on the curved surface, thereby ensuring the shape stability of the liquid crystal display panel 10. Figure 9 This is a schematic diagram of the support platform of the support structure provided in some embodiments of this disclosure. Taking the liquid crystal display panel 10 as a rectangle as an example, as shown... Figure 9As shown, the support structure 2's support platform 22 includes two first support platforms 221 and two second support platforms 222 arranged opposite to each other. For example, the first support platforms 221 are located on the long side of the liquid crystal display panel 10, and the second support platforms 222 are located on the short side of the liquid crystal display panel 10. Both the first support platforms 221 and the second support platforms 222 have a support sub-surface for supporting the liquid crystal display panel 10. The support sub-surfaces of the two first support platforms 221 are curved surfaces, and the support sub-surfaces of the two second support platforms 222 are approximately inclined slopes.

[0087] Figure 7 This is another schematic diagram of a display device provided in some embodiments of the present disclosure. In one example, such as Figure 7 As shown, the display device includes, in addition to Figure 4 In addition to the structure in the back panel 311, the device may also include a flexible circuit board 71 and a driving circuit board 70. The driving circuit board 70 is located on the side of the bottom wall 311 away from the liquid crystal display panel 10. One end of the flexible circuit board 71 is electrically connected to the liquid crystal display panel 10, and the other end is electrically connected to the driving circuit board 70. The driving circuit board 70 provides driving signals to the liquid crystal display panel 10, and the flexible circuit board 71 transmits the driving signals provided by the driving circuit board 70 to the liquid crystal display panel 10 to drive the liquid crystal display panel 10 to display. Furthermore, the display device may also include a protective housing 72, which, together with the back plate 31, defines a protective space Va2. The driving circuit board 70 is located within this protective space Va2, thereby protecting the driving circuit board 70.

[0088] In one example, such as Figure 7 As shown, the display device may further include a front frame 80, which may include a side wall portion 82 and a blocking portion 81. The side wall portion 82 is disposed around the support structure 2, and the blocking portion 81 is connected to the side wall portion 81, for example, the two are connected as a single structure. The blocking portion 82 is located on the side of the liquid crystal display panel 10 away from the backlight module and is disposed opposite to the peripheral area NA of the liquid crystal display panel 10.

[0089] The side wall 312 of the front frame 80 is connected to the back plate 31. For example, the side wall 312 of the front frame 80 can be connected to the side wall 312 of the back plate 31 by fasteners such as screws. The retaining wall 21 of the support structure 2 is provided with a clearance hole, through which the fastener passes.

[0090] It is understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of this disclosure, and this disclosure is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and substance of this disclosure, and these modifications and improvements are also considered to be within the scope of protection of this disclosure.

Claims

1. A display device, characterized in that, include: A backlight module, the backlight module including a backlight source and a support structure located around the backlight source; A liquid crystal display panel is located on the light-emitting side of the backlight module. The liquid crystal display panel is polygonal and includes a display area and a peripheral area surrounding the display area. A buffer layer is located between the support structure and the liquid crystal display panel, and is disposed opposite to the peripheral area; The buffer layer includes: a plurality of first buffer pads and at least one second buffer pad, wherein the first buffer pads are located at the corners of the liquid crystal display panel, and the second buffer pads are located between two adjacent first buffer pads; the first buffer pads include at least one buffer strip, which is disposed opposite to the side of the liquid crystal display panel; the thickness of the buffer strip gradually decreases along the direction away from the second buffer pad located on the same side as the buffer strip; The hardness of the buffer strip is greater than that of the second buffer pad, but less than that of the support structure.

2. The display device according to claim 1, characterized in that, The first buffer pad includes a plurality of buffer strips, and the plurality of buffer strips in the same first buffer pad are respectively disposed opposite to two adjacent sides of the liquid crystal display panel.

3. The display device according to claim 1, characterized in that, The surface of the liquid crystal display panel facing the backlight module and the surface away from the backlight module are both curved surfaces, and the curved surfaces are bent toward the backlight module.

4. The display device according to claim 1, characterized in that, An adhesive layer is provided between the first buffer pad and the supporting structure.

5. The display device according to any one of claims 1 to 4, characterized in that, The Shore hardness of the buffer strip is between 40 and 70.

6. The display device according to any one of claims 1 to 4, characterized in that, The first cushioning pad is made of silicone, and the second cushioning pad is made of foam.

7. The display device according to any one of claims 1 to 4, characterized in that, The buffer strip extends along the corresponding side of the liquid crystal display panel, and the length of the buffer strip is 0.1 to 0.2 times the length of the corresponding side of the liquid crystal display panel.

8. The display device according to any one of claims 1 to 4, characterized in that, The difference between the maximum and minimum thickness of the buffer strip is between 1 and 1.5 mm.

9. The display device according to any one of claims 1 to 4, characterized in that, Both the first and second cushioning pads are made of light-shielding material.

10. The display device according to any one of claims 1 to 4, characterized in that, The orthographic projection of the buffer layer onto the support structure is a closed ring shape.

11. The display device according to claim 10, characterized in that, The second buffer pad and the buffer strip overlap in their orthogonal projections onto the support structure.

12. The display device according to any one of claims 1 to 4, characterized in that, The first buffer pad also includes a first protrusion integrally connected to the buffer strip, and the first protrusion overlaps with the orthographic projection of the second buffer pad on the reference plane; And / or, The second buffer pad includes a buffer pad body and a second protrusion integrally connected to the buffer pad body, wherein the second protrusion overlaps with the orthographic projection of the first buffer pad on the reference plane; The reference surface is a plane that extends along the thickness direction of the liquid crystal display panel and is parallel to the side where the buffer strip and the second buffer pad are located.

13. The display device according to claim 12, characterized in that, The first buffer pad includes a first protrusion, and the second buffer pad includes a buffer pad body and a second protrusion. The second protrusion overlaps with the orthographic projection of the first protrusion on the reference plane. The thickness of either the first protrusion or the second protrusion is less than or equal to the maximum thickness of the buffer pad body.

14. The display device according to any one of claims 1 to 4, characterized in that, The maximum thickness of the second buffer pad is 0.9 to 1.1 times the maximum thickness of the buffer strip.

15. The display device according to any one of claims 1 to 4, characterized in that, The supporting structure includes: a retaining wall and a support platform connected to the retaining wall. The retaining wall is arranged around the backlight, the support platform is arranged opposite to the peripheral area, and the buffer layer is arranged on the support platform.

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