Display device

Abstract

The present invention relates to the field of display technology, and discloses a display device comprising: a backlight module; a display panel, the display panel being located on the light-emitting surface of the backlight module, the display panel comprising a main body region and a step region located at least on one side of the main body region; a bonding structure, the bonding structure being bonded between the backlight module and the display panel, the bonding structure comprising a light-shielding adhesive layer and a first light-shielding adhesive tape, the light-shielding adhesive layer being located on a side of the backlight module close to the display panel, the two sides of the first light-shielding adhesive tape being bonded to the light-shielding adhesive layer and the display panel, respectively; and at least one blocking portion, the blocking portion being located between the first light-shielding adhesive tape and the display panel, the blocking portion being non-adhesive, and the vertical projection of the blocking portion on the plane where the display panel is located being at least partially located in the step region. The present invention is conducive to improving the display effect of the display device.

Description

Technical Field

[0001] The present invention relates to the field of display technology, and more particularly, to a display device. Background Art

[0002] A liquid crystal display device includes a backlight module and a display panel. A light-shielding tape is provided on the top layer of the backlight module. The light-shielding tape prevents light leakage from the surrounding area of the backlight module. Furthermore, in the liquid crystal display device, the light-shielding tape bonds the display panel and the backlight module together.

[0003] However, since the thickness of the step area in the display panel is relatively small, the step area in the display panel is easily deformed by the pulling of the light-shielding tape during the fixing process or later use, which can easily have an adverse effect on the display effect of the display panel and cause uneven display problems. Summary of the Invention

[0004] In view of this, the present invention provides a display device, which is beneficial to improving the display effect of the display device.

[0005] The present invention provides a display device, comprising: a backlight module; a display panel, the display panel being located on a light-emitting surface of the backlight module, the display panel comprising a main area and a step area at least located on one side of the main area; a bonding structure, the bonding structure being bonded between the backlight module and the display panel, the bonding structure comprising a light-shielding adhesive layer and a first light-shielding adhesive tape, the light-shielding adhesive layer being located on a side of the backlight module close to the display panel, the two sides of the first light-shielding adhesive tape being bonded to the light-shielding adhesive layer and the display panel, respectively; and at least one blocking portion, the blocking portion being located between the first light-shielding adhesive tape and the display panel, the blocking portion being non-sticky, and a vertical projection of the blocking portion on the plane where the display panel is located being at least partially located in the step area.

[0006] Compared with the prior art, the display device provided by the present invention achieves at least the following beneficial effects:

[0007] The display device provided by the present invention includes a backlight module and a display panel. The display panel includes a main body area and a step area located at least on one side of the main body area. Since only part of the film layer structure in the display panel extends to the step area, the thickness of the portion of the display panel located in the step area is less than the thickness of the portion located in the main body area along the direction perpendicular to the plane where the display panel is located. The display device also includes a bonding structure, which is bonded between the backlight module and the display panel, that is, the backlight module and the display panel are bonded by the bonding structure. The bonding structure includes a light-shielding adhesive layer and a first light-shielding adhesive tape. The light-shielding adhesive layer is located on the side of the backlight module close to the display panel. The two sides of the first light-shielding adhesive tape are bonded to the light-shielding adhesive layer and the display panel respectively, so that the backlight module and the display panel are bonded by the light-shielding adhesive layer and the first light-shielding adhesive tape. At the same time, the light-shielding adhesive layer and the first light-shielding adhesive tape can play a light-shielding role to prevent the occurrence of light leakage around the display device. When the display device is subjected to external forces, the first light-shielding tape will generate tensile stress on the area of the display panel to which it is bonded. Because the thickness of the portion of the display panel located in the step area is thinner than the thickness of the portion located in the main area in a direction perpendicular to the plane of the display panel, the portion of the display panel located in the step area is easily deformed by the pull of the first light-shielding tape, which can easily adversely affect the display quality of the display panel. The display device also includes at least one blocking portion, which is located between the first light-shielding tape and the display panel. The blocking portion is non-adhesive, and its perpendicular projection to the plane of the display panel is at least partially located in the step area. The provision of the blocking portion can reduce the tensile stress of the first light-shielding tape on the portion of the display panel located in the step area when the display device is subjected to external forces, thereby reducing deformation of the portion of the display panel located in the step area, which is beneficial for improving the display quality of the display device. At the same time, by attaching a non-sticky barrier portion on the side of the first light-shielding tape close to the display panel, it is possible to reduce the pulling stress of the first light-shielding tape on the portion of the display panel located in the step area when the display device is subjected to external force. The manufacturing process is simple, which is conducive to reducing production costs.

[0008] Of course, any product implementing the present invention does not necessarily need to achieve all of the above-mentioned technical effects at the same time.

[0009] Further features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.

[0011] Figure 1 is a planar schematic diagram of a display device provided by the present invention;

[0012] Figure 2 yes Figure 1 A cross-sectional view of the display device along line AA';

[0013] Figure 3 yes Figure 1 Another cross-sectional view of the display device along line AA';

[0014] Figure 4 yes Figure 1 Another cross-sectional view of the display device along line AA';

[0015] Figure 5 This is a schematic structural diagram of a first light-shielding adhesive layer provided by the present invention;

[0016] Figure 6 yes Figure 1 Another cross-sectional view of the display device along line AA';

[0017] Figure 7 is a schematic structural diagram of another first light-shielding adhesive layer provided by the present invention;

[0018] Figure 8 is a planar schematic diagram of another display device provided by the present invention;

[0019] Figure 9 yes Figure 8 A cross-sectional view of the display device along BB';

[0020] Figure 10 is a planar schematic diagram of another display device provided by the present invention;

[0021] Figure 11 yes Figure 10 A cross-sectional view of the display device along CC';

[0022] Figure 12 yes Figure 10 A cross-sectional view of the display device along line DD'. DETAILED DESCRIPTION

[0023] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that unless otherwise specifically stated, the relative arrangement of components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention.

[0024] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.

[0025] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0026] In all examples shown and discussed herein, any specific values should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0027] It should be noted that like reference numerals and letters refer to like items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0028] Figure 1 is a planar schematic diagram of a display device provided by the present invention, Figure 2 yes Figure 1 A cross-sectional view of the display device along AA', referring to Figure 1 and Figure 2 This embodiment provides a display device, which includes a backlight module 10 and a display panel 20. The backlight module 10 and the display panel 20 are arranged relative to each other, and the display panel 20 is located on the light-emitting surface of the backlight module 10. The light emitted by the backlight module 10 is incident on the display panel 20, so that the display panel 20 can display an image.

[0029] The display panel 20 includes a main body area 21 and a step area 22 located at least on one side of the main body area 21. Since only a portion of the film layer structure in the display panel 20 extends to the step area 22, the thickness of the portion of the display panel 20 located in the step area 22 is less than the thickness of the portion located in the main body area 21 along the direction perpendicular to the plane of the display panel.

[0030] The display device also includes a bonding structure 30, which is bonded between the backlight module 10 and the display panel 20. Specifically, the bonding structure 30 bonds the backlight module 10 and the display panel 20. The bonding structure 30 includes a light-shielding adhesive layer 31 and a first light-shielding tape 32. The light-shielding adhesive layer 31 is located on the side of the backlight module 10 closest to the display panel 20. The first light-shielding tape 32 has two sides bonded to the light-shielding adhesive layer 31 and the display panel 20, respectively. Thus, the light-shielding adhesive layer 31 and the first light-shielding tape 32 bond the backlight module 10 and the display panel 20 together. Furthermore, the light-shielding adhesive layer 31 and the first light-shielding tape 32 provide light shielding, preventing light leakage from the periphery of the display device.

[0031] When the display device is subjected to external force, the first light-shielding tape 32 will generate tensile stress on the area of the display panel 20 where it is bonded to it. Since the thickness of the portion of the display panel 20 located in the step area 22 is smaller than the thickness of the portion located in the main area 21 in the direction perpendicular to the plane where the display panel is located, the portion of the display panel 20 located in the step area 22 is prone to deformation under the pulling of the first light-shielding tape 32, which can easily have an adverse effect on the display effect of the display panel 20.

[0032] The display device provided in this embodiment also includes at least one barrier portion 40, which is positioned between the first light-shielding tape 32 and the display panel 20. The barrier portion 40 is non-adhesive, and its perpendicular projection onto the plane of the display panel 20 is at least partially positioned within the step region 22. The provision of the barrier portion 40 reduces the tensile stress exerted by the first light-shielding tape 32 on the portion of the display panel 20 located within the step region 22 when the display device is subjected to external forces, thereby reducing deformation of the portion of the display panel 20 located within the step region 22 and facilitating improved display quality. Furthermore, by attaching the non-adhesive barrier portion 40 to the side of the first light-shielding tape 32 closest to the display panel 20, the tensile stress exerted by the first light-shielding tape 32 on the portion of the display panel 20 located within the step region 22 when the display device is subjected to external forces can be reduced. This simplifies the manufacturing process and helps reduce production costs.

[0033] Optionally, the barrier portion 40 may be made of PET (Polyethylene terephthalate), a commonly used material in display devices, which is low-cost and non-sticky. Of course, in other embodiments of the present invention, the barrier portion 40 may also be made of other non-stick materials, which will not be further detailed herein.

[0034] Continue to refer Figure 1 and Figure 2 In some optional embodiments, the display panel 20 includes a first substrate 23 and a second substrate 24 disposed opposite each other, a first polarizer 25 and a second polarizer 26. The first substrate 23 is located between the second substrate 24 and the backlight module 10. The first polarizer 25 is located on a side of the first substrate 23 away from the second substrate 24. The second polarizer 26 is located on a side of the second substrate 24 away from the first substrate 23. Exemplarily, the display panel 20 is a liquid crystal display panel, the first substrate 23 is an array substrate, and the second substrate 24 is a color filter substrate. The array substrate and the color filter substrate are disposed opposite each other, and a liquid crystal layer (not shown in the figure) is disposed between the array substrate and the color filter substrate.

[0035] In a direction perpendicular to the plane where the display panel 20 is located, the second substrate 24, the first polarizer 25, the second polarizer 25 and the step area 22 do not overlap, that is, in the display panel 20, the first substrate 23 extends outward relative to the second substrate 24 and is located in the step area 22, so that the first substrate 23 is partially located in the step area 22, and the blocking portion 40 is in contact with the first substrate 23, that is, the blocking portion 40 is located between the first substrate 23 and the first light-shielding tape 32. Through the setting of the blocking portion 40, when the display device is subjected to external force, the pulling stress of the first light-shielding tape 32 on the portion of the first substrate 23 located in the step area 22 can be reduced, thereby reducing the deformation of the portion of the first substrate 23 located in the step area 22, which is beneficial to improving the display effect of the display device.

[0036] Figure 3 yes Figure 1 Another cross-sectional view of the display device along line AA', referring to Figure 1 and Figure 3 In some optional embodiments, the light shielding adhesive layer 31 includes a first light shielding adhesive layer 311 , the first light shielding adhesive layer 311 includes a protrusion 313 , and the protrusion 313 is located on a side of the first light shielding adhesive layer 311 close to the display panel 20 ;

[0037] The vertical projection of the protrusion 313 on the plane where the display panel 20 is located is located in the main body area 21;

[0038] The first light-shielding tape 32 covers the side of the first light-shielding tape layer 311 close to the display panel 20. The portion of the first light-shielding tape 32 covering the raised portion 313 is embedded between the first polarizer 25 and the blocking portion 40, and the portion of the first light-shielding tape 32 covering the raised portion 313 is at least partially in contact with the first substrate 23.

[0039] Specifically, the light-shielding adhesive layer 31 includes a first light-shielding adhesive layer 311, and a protrusion 313 is provided on the side of the first light-shielding adhesive layer 311 close to the display panel 20. The vertical projection of the protrusion 313 on the plane where the display panel 20 is located is located in the main area 21, so that the setting of the protrusion 313 will not affect the setting of the blocking part 40.

[0040] The first light-shielding tape 32 covers the side of the first light-shielding adhesive layer 311 close to the display panel 20, and a protrusion 313 is provided on the side of the first light-shielding adhesive layer 311 close to the display panel 20, so that the part of the first light-shielding tape 32 covered by the protrusion 313 forms a structure bent toward the direction close to the display panel 20, and the part of the first light-shielding tape 32 covered by the protrusion 313 is embedded between the first polarizer 25 and the blocking portion 40. The part of the first light-shielding tape 32 covered by the protrusion 313 is at least partially in contact with the first substrate 23. The setting of the protrusion 313 effectively improves the bonding strength between the first light-shielding tape 32 and the first substrate 23, the first polarizer 25, and the first light-shielding adhesive layer 311, which is beneficial to improving the fixing stability of the backlight module 10 and the display panel 20, and at the same time, effectively reducing the risk of peripheral light leakage.

[0041] Figure 4 yes Figure 1 Another cross-sectional view of the display device along line AA', referring to Figure 1 and Figure 4 In some optional embodiments, the first light-shielding adhesive layer 311 includes at least two overlapping adhesive layer sub-portions 3110 , that is, the first light-shielding adhesive layer 311 may be formed by multiple adhesive layer sub-portions 3110 .

[0042] It should be noted that Figure 4 The first light shielding adhesive layer 311 is shown as an example including two overlapping adhesive layer sub-parts 3110. In other embodiments of the present invention, the first light shielding adhesive layer 311 may be an integral structure. For example, referring to FIG. Figure 3 Of course, the first light shielding adhesive layer 311 can also be formed by other numbers of adhesive layer sub-parts 3110, and the present invention will not go into details here.

[0043] refer to Figure 1 and Figure 4 In some optional embodiments, the glue layer sub-portion 3110 includes a first glue layer sub-portion 3111 and a second glue layer sub-portion 3112 , and the second glue layer sub-portion 3112 is located on a side of the first glue layer sub-portion 3111 close to the display panel 20 ;

[0044] In the direction from the main area 21 to the step area 22 , the width of the second adhesive layer sub-portion 3112 is smaller than the width of the first adhesive layer sub-portion 3111 ;

[0045] The second adhesive layer sub-portion 3112 is a protruding portion 313 .

[0046] Specifically, the first light-shielding adhesive layer 311 includes a first adhesive layer sub-portion 3111 and a second adhesive layer sub-portion 3112. Along the direction from the main area 21 to the step area 22, the width of the second adhesive layer sub-portion 3112 is smaller than the width of the first adhesive layer sub-portion 3111, and the second adhesive layer sub-portion 3112 is located on the side of the first adhesive layer sub-portion 3111 close to the display panel 20, so that the second adhesive layer sub-portion 3112 is the raised portion 313 of the adhesive layer sub-portion 3110. The size of the raised portion 313 to be formed as needed can be used to set the second adhesive layer sub-portion 3112 of the corresponding size on the first adhesive layer sub-portion 3111. The setting method is simple, which helps to reduce the difficulty of the process.

[0047] It should be noted that Figure 4 exemplarily shows the positional relationship between the first adhesive layer sub-portion 3111 and the second adhesive layer sub-portion 3112 in the first light-shielding adhesive layer 311 when the second adhesive layer sub-portion 3112 is a protrusion 313. In other embodiments of the present invention, reference is made to FIG. Figure 5 , Figure 5 This is a schematic diagram of the structure of a first light-shielding adhesive layer provided by the present invention. The positional relationship between the first adhesive layer sub-part 3111 and the second adhesive layer sub-part 3112 can be adopted. Figure 5 Of course, the first adhesive layer sub-portion 3111 and the second adhesive layer sub-portion 3112 may also adopt other positional relationships according to actual production needs, and the present invention will not elaborate on them one by one here.

[0048] Figure 6 yes Figure 1 Another cross-sectional view of the display device along line AA', referring to Figure 1 and Figure 6 In some optional embodiments, the glue layer sub-portion 3110 includes a first glue layer sub-portion 3111 and a second glue layer sub-portion 3112 , and the second glue layer sub-portion 3112 is located on a side of the first glue layer sub-portion 3111 close to the display panel 20 ;

[0049] In the direction from the main area 21 to the step area 22 , the width of the second adhesive layer sub-portion 3112 is greater than the width of the first adhesive layer sub-portion 3111 ;

[0050] The portion of the second adhesive layer sub-portion 3112 covering the first adhesive layer sub-portion 3111 is a protrusion 313 .

[0051] Specifically, the first light-shielding adhesive layer 311 includes a first adhesive layer sub-portion 3111 and a second adhesive layer sub-portion 3112. Along the direction from the main area 21 to the step area 22, the width of the second adhesive layer sub-portion 3112 is greater than the width of the first adhesive layer sub-portion 3111. The second adhesive layer sub-portion 3112 is located on the side of the first adhesive layer sub-portion 3111 closer to the display panel 20. As a result, the portion of the second adhesive layer sub-portion 3112 that covers the first adhesive layer sub-portion 3111 forms the raised portion 313. Furthermore, because the second adhesive layer sub-portion 3112 covers the entire first adhesive layer sub-portion 3111 and a portion of the second adhesive layer sub-portion 3112 forms the raised portion 313, this helps improve the fixing stability of the raised portion 313 and the remaining portions of the first light-shielding adhesive layer 311.

[0052] It should be noted that Figure 6 exemplarily shows the positional relationship between the first adhesive layer sub-portion 3111 and the second adhesive layer sub-portion 3112 in the first light-shielding adhesive layer 311 when the portion of the second adhesive layer sub-portion 3112 covering the first adhesive layer sub-portion 3111 is the protrusion 313. In other embodiments of the present invention, reference is made to Figure 7 , Figure 7 This is a schematic diagram of the structure of another first light-shielding adhesive layer provided by the present invention. The positional relationship between the first adhesive layer sub-part 3111 and the second adhesive layer sub-part 3112 can be adopted. Figure 7 Of course, the first adhesive layer sub-portion 3111 and the second adhesive layer sub-portion 3112 may also adopt other positional relationships according to actual production needs, and the present invention will not elaborate on them one by one here.

[0053] Continue to refer Figure 1 and Figure 3 In some optional embodiments, the light-shielding adhesive layer 31 also includes a second light-shielding adhesive layer 312, and the vertical projection of the second light-shielding adhesive layer 312 on the plane where the display panel 20 is located is located in the step area 22, so that the first light-shielding adhesive tape 32 is partially located between the blocking portion 40 and the second light-shielding adhesive layer 312.

[0054] In a direction perpendicular to the plane where the display panel 20 is located, the distance between the raised portion 313 and the first substrate 23 is equal to the thickness of the first light-shielding tape 32, and the distance between the second light-shielding adhesive layer 312 and the first substrate 23 is equal to the sum of the thicknesses of the first light-shielding tape 32 and the blocking portion 40. That is, in a direction perpendicular to the plane where the display panel 20 is located, the distance between the raised portion 313 and the first substrate 23 is smaller than the distance between the second light-shielding adhesive layer 312 and the first substrate 23, and the blocking portion 40 is located between the first substrate 23 and the first light-shielding tape 32, so that the portion of the first light-shielding tape 32 covering the raised portion 313 forms a structure bent toward the direction close to the display panel 20, and the portion of the first light-shielding tape 32 covering the raised portion 313 is completely embedded between the first polarizer 25 and the blocking portion 40, effectively improving the bonding strength between the first light-shielding tape 32 and the first substrate 23 and the raised portion 313, thereby facilitating improving the fixing stability of the backlight module 10 and the display panel 20.

[0055] Figure 8 is a planar schematic diagram of another display device provided by the present invention, Figure 9 yes Figure 8 A cross-sectional view of the display device along BB', referring to Figure 8 and Figure 9 In some optional embodiments, the vertical projection of the blocking portion 40 on the plane where the display panel 20 is located is partially located in the main area 21 and partially located in the step area 22;

[0056] In a direction perpendicular to the plane of the display panel 20 , the blocking portion 40 and the first polarizer 25 do not overlap, and the surface of the blocking portion 40 in contact with the first light-shielding tape 32 and the surface of the first polarizer 25 in contact with the first light-shielding tape 32 are located in the same plane;

[0057] A second light shielding tape 33 is embedded on a side of the blocking portion 40 close to the display panel 20 .

[0058] Specifically, the vertical projection of the blocking portion 40 on the plane where the display panel 20 is located is partially located in the main area 21, and partially located in the step area 22, that is, the blocking portion 40 can be partially set in the area where the main area 21 is located, and partially set in the area where the step area 22 is located, that is, the setting area of the blocking portion 40 is large, and the surface where the blocking portion 40 contacts the first light-shielding tape 32 and the surface where the first polarizer 25 contacts the first light-shielding tape 32 are located in the same plane, which can increase the supporting area of the blocking portion 40 between the first light-shielding tape 32 and the first substrate 23, so that the first light-shielding tape 32 is a planar structure, which is beneficial to reduce the tensile stress generated by the first light-shielding tape 32 on the area where the display panel 20 is bonded to it.

[0059] The blocking portion 40 and the first polarizer 25 are arranged on the same side of the first substrate 23. In a direction perpendicular to the plane where the display panel 20 is located, the blocking portion 40 and the first polarizer 25 do not overlap, so that the settings of the blocking portion 40 and the first polarizer 25 do not affect each other.

[0060] By setting the blocking portion 40, when the display device is subjected to external force, the tensile stress of the first light-shielding tape 32 on the portion of the display panel 20 located in the step area 22 can be reduced, thereby reducing the deformation of the portion of the display panel 20 located in the step area 22, which is beneficial to improving the display effect of the display device. At the same time, since the second light-shielding tape 33 is embedded on the side of the blocking portion 40 close to the display panel 20, the second light-shielding tape 33 is used to bond the blocking portion 40 and the first substrate 23, so that the first substrate 23 and the backlight module 10 can be bonded together through the second light-shielding tape 33, the first light-shielding tape 32 and the light-shielding adhesive layer 31, thereby avoiding the large setting area of the blocking portion 40 affecting the fixing stability of the backlight module 10 and the display panel 20.

[0061] Continue to refer Figure 8 and Figure 9 In some optional embodiments, a vertical projection of the second light-shielding tape 33 on the plane where the display panel 20 is located is located within the main body area 21 .

[0062] Specifically, since the thickness of the portion of the display panel 20 located in the main area 21 is relatively large in the direction perpendicular to the plane where the display panel 20 is located, the tensile stress of the first light-shielding tape 32 on the portion of the display panel 20 located in the main area 21 has little effect on the portion of the display panel 20 located in the main area 21. The vertical projection of the second light-shielding tape 33 on the plane where the display panel 20 is located is located in the main area 21, which can improve the fixing stability of the backlight module 10 and the display panel 20. At the same time, through the setting of the blocking part 40, when the display device is subjected to external force, the tensile stress of the first light-shielding tape 32 on the portion of the display panel 20 located in the step area 22 can be reduced, thereby reducing the deformation of the portion of the display panel 20 located in the step area 22.

[0063] Figure 10 is a planar schematic diagram of another display device provided by the present invention, Figure 11 yes Figure 10 A cross-sectional view of the display device along CC', Figure 12 yes Figure 10 A cross-sectional view of the display device along DD', referring to Figure 10-12 In some optional embodiments, the vertical projection of the second light-shielding tape 33 on the plane where the display panel 20 is located is partially located in the main area 21 and partially located in the step area 22;

[0064] The step area 22 extends along the first direction X, and the second light shielding tape 33 extends along the second direction Y. The second light shielding tape 33 is arranged along the first direction X, wherein the first direction X and the second direction Y intersect. Optionally, the first direction X and the second direction Y are perpendicular.

[0065] Specifically, the step area 22 extends along the first direction X, so that the tensile stress of the first light-shielding tape 32 on the portion of the display panel 20 located in the step area 22 is mainly concentrated in the first direction X. The second light-shielding tape 33 is provided to extend along the second direction Y, and the second light-shielding tape 33 is arranged along the first direction X. Accordingly, the area on the blocking portion 40 where the second light-shielding tape 33 is not provided is also arranged along the first direction X. When the display device is subjected to external force, the tensile stress of the first light-shielding tape 32 on the portion of the display panel 20 located in the step area 22 in the first direction X is effectively reduced, thereby reducing the deformation of the portion of the display panel 20 located in the step area 22.

[0066] At the same time, the second light-shielding tape 33 extends along the second direction Y, and the vertical projection of the second light-shielding tape 33 on the plane where the display panel 20 is located is partially located in the main area 21, and partially located in the step area 22, which can increase the setting area of the second light-shielding tape 33, thereby facilitating improving the fixing stability of the backlight module 10 and the display panel 20.

[0067] Continue to refer Figure 8 and Figure 9 In some optional embodiments, the light-shielding adhesive layer 31 also includes a second light-shielding adhesive layer 312, and the vertical projection of the second light-shielding adhesive layer 312 on the plane where the display panel 20 is located is located in the step area 22, so that the first light-shielding adhesive tape 32 is partially located between the blocking portion 40 and the second light-shielding adhesive layer 312.

[0068] Along the direction perpendicular to the plane where the display panel 20 is located, the distance between the first light-shielding adhesive layer 311 and the first substrate 23 is equal to the distance between the second light-shielding adhesive layer 312 and the first substrate 23, so that the first light-shielding adhesive tape 32 is a planar structure, which is beneficial to reducing the tensile stress generated by the first light-shielding adhesive tape 32 on the area where the display panel 20 is bonded to it.

[0069] Continue to refer Figure 1 and Figure 2In some optional embodiments, the backlight module 10 includes an iron shell 11, a light guide plate 12, and a support layer 13. The iron shell 11 includes a bottom 111 and a bent portion 112 disposed around the bottom 111. The bent portion 112 is bent toward the main body area 21, thereby forming an accommodating space in the iron shell 11. The light guide plate 12 is located within the accommodating space formed by the iron shell 11, and the support layer 13 is located on the side of the light guide plate 12 close to the display panel 20. It should be noted that the backlight module 10 may also include an optical film assembly 14, such as, but not limited to, a brightness enhancement film or a diffuser. Of course, the backlight module 10 may also include other structures, which will not be described in detail herein.

[0070] The first light-shielding adhesive layer 311 is located between the supporting layer 13 and the first light-shielding tape 32, that is, the first light-shielding adhesive layer 311 bonds the supporting layer 13 and the first light-shielding tape 32, and the second light-shielding adhesive layer 312 is located between the bending portion 112 and the first light-shielding tape 32, that is, the second light-shielding adhesive layer 312 bonds the bending portion 112 and the first light-shielding tape 32, and then is bonded to the display panel 20 through the first light-shielding tape 32, so that the backlight module 10 and the display panel 20 can be bonded and fixed.

[0071] It should be noted that the display device provided in the above embodiments of the present invention is described only by taking a mobile phone as an example. It can be understood that the display device provided in the embodiments of the present invention can also be other display devices with display functions such as computers, televisions, and car-mounted display devices, and the present invention does not impose specific restrictions on this.

[0072] It can be seen from the above embodiments that the display device provided by the present invention achieves at least the following beneficial effects:

[0073] The display device provided by the present invention includes a backlight module and a display panel. The display panel includes a main body area and a step area located at least on one side of the main body area. Since only part of the film layer structure in the display panel extends to the step area, the thickness of the portion of the display panel located in the step area is less than the thickness of the portion located in the main body area along the direction perpendicular to the plane where the display panel is located. The display device also includes a bonding structure, which is bonded between the backlight module and the display panel, that is, the backlight module and the display panel are bonded by the bonding structure. The bonding structure includes a light-shielding adhesive layer and a first light-shielding adhesive tape. The light-shielding adhesive layer is located on the side of the backlight module close to the display panel. The two sides of the first light-shielding adhesive tape are bonded to the light-shielding adhesive layer and the display panel respectively, so that the backlight module and the display panel are bonded by the light-shielding adhesive layer and the first light-shielding adhesive tape. At the same time, the light-shielding adhesive layer and the first light-shielding adhesive tape can play a light-shielding role to prevent the occurrence of light leakage around the display device. When the display device is subjected to external forces, the first light-shielding tape will generate tensile stress on the area of the display panel to which it is bonded. Because the thickness of the portion of the display panel located in the step area is thinner than the thickness of the portion located in the main area in a direction perpendicular to the plane of the display panel, the portion of the display panel located in the step area is easily deformed by the pull of the first light-shielding tape, which can easily adversely affect the display quality of the display panel. The display device also includes at least one blocking portion, which is located between the first light-shielding tape and the display panel. The blocking portion is non-adhesive, and its perpendicular projection to the plane of the display panel is at least partially located in the step area. The provision of the blocking portion can reduce the tensile stress of the first light-shielding tape on the portion of the display panel located in the step area when the display device is subjected to external forces, thereby reducing deformation of the portion of the display panel located in the step area, which is beneficial for improving the display quality of the display device. At the same time, by attaching a non-sticky barrier portion on the side of the first light-shielding tape close to the display panel, it is possible to reduce the pulling stress of the first light-shielding tape on the portion of the display panel located in the step area when the display device is subjected to external force. The manufacturing process is simple, which is conducive to reducing production costs.

[0074] Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present invention. It should be understood by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A display device, characterized in that: include: Backlight module; A display panel, the display panel being located on the light-emitting surface of the backlight module, the display panel comprising a main body area and a step area at least located on one side of the main body area; a bonding structure bonded between the backlight module and the display panel, the bonding structure comprising a light-shielding adhesive layer and a first light-shielding adhesive tape, the light-shielding adhesive layer being located on a side of the backlight module close to the display panel, and two sides of the first light-shielding adhesive tape being bonded to the light-shielding adhesive layer and the display panel, respectively; At least one blocking portion is located between the first light-shielding tape and the display panel, the blocking portion is non-adhesive, and a vertical projection of the blocking portion on the plane where the display panel is located is at least partially located in the step area.

2. The display device according to claim 1, wherein The display panel includes a first substrate and a second substrate arranged opposite to each other, a first polarizer and a second polarizer, the first substrate is located between the second substrate and the backlight module, the first polarizer is located on a side of the first substrate away from the second substrate, and the second polarizer is located on a side of the second substrate away from the first substrate; Along a direction perpendicular to the plane where the display panel is located, the second substrate, the first polarizer, the second polarizer and the step area do not overlap; The first substrate is partially located in the step area, and the blocking portion is in contact with the first substrate.

3. The display device according to claim 2, wherein: The light-shielding adhesive layer includes a first light-shielding adhesive layer, the first light-shielding adhesive layer includes a protrusion, and the protrusion is located on a side of the first light-shielding adhesive layer close to the display panel; The vertical projection of the protrusion on the plane where the display panel is located is located in the main body area; The first light-shielding tape covers the side of the first light-shielding tape layer close to the display panel, the portion of the first light-shielding tape covering the raised portion is embedded between the first polarizer and the blocking portion, and the portion of the first light-shielding tape covering the raised portion is at least partially in contact with the first substrate.

4. The display device according to claim 3, wherein: The first light-shielding adhesive layer includes at least two overlapping adhesive layer sub-parts.

5. The display device according to claim 4, wherein: The glue layer sub-portion includes a first glue layer sub-portion and a second glue layer sub-portion, wherein the second glue layer sub-portion is located on a side of the first glue layer sub-portion close to the display panel; In a direction from the main area to the step area, the width of the second adhesive layer sub-portion is smaller than the width of the first adhesive layer sub-portion; The second adhesive layer sub-portion is the convex portion.

6. The display device according to claim 4, wherein: The glue layer sub-portion includes a first glue layer sub-portion and a second glue layer sub-portion, wherein the second glue layer sub-portion is located on a side of the first glue layer sub-portion close to the display panel; In a direction from the main area to the step area, the width of the second adhesive layer sub-portion is greater than the width of the first adhesive layer sub-portion; The portion of the second adhesive layer sub-portion covering the first adhesive layer sub-portion is the convex portion.

7. The display device according to claim 3, wherein: The light-shielding adhesive layer further includes a second light-shielding adhesive layer, wherein a vertical projection of the second light-shielding adhesive layer on the plane where the display panel is located is located in the step area; The first light-shielding adhesive tape portion is located between the blocking portion and the second light-shielding adhesive layer; Along the direction perpendicular to the plane where the display panel is located, the distance between the raised portion and the first substrate is equal to the thickness of the first light-shielding tape, and the distance between the second light-shielding tape layer and the first substrate is equal to the sum of the thicknesses of the first light-shielding tape and the blocking portion.

8. The display device according to claim 3, wherein The vertical projection of the blocking portion on the plane where the display panel is located is partially located in the main area, and partially located in the step area; Along a direction perpendicular to the plane of the display panel, the blocking portion and the first polarizer do not overlap, and a surface of the blocking portion in contact with the first light-shielding tape and a surface of the first polarizer in contact with the first light-shielding tape are located in the same plane; A second light-shielding tape is embedded on one side of the blocking portion close to the display panel.

9. The display device according to claim 8, wherein: The vertical projection of the second light-shielding tape on the plane where the display panel is located is located in the main body area.

10. The display device according to claim 8, wherein The vertical projection of the second light-shielding tape on the plane where the display panel is located is partially located in the main area, and partially located in the step area; The step area extends along a first direction, the second light-shielding tape extends along a second direction, and the second light-shielding tape is arranged along the first direction, wherein the first direction and the second direction intersect.

11. The display device according to claim 8, wherein The light-shielding adhesive layer further includes a second light-shielding adhesive layer, wherein a vertical projection of the second light-shielding adhesive layer on the plane where the display panel is located is located in the step area; The first light-shielding adhesive tape portion is located between the blocking portion and the second light-shielding adhesive layer; Along a direction perpendicular to the plane where the display panel is located, the distance between the first light-shielding adhesive layer and the first substrate is equal to the distance between the second light-shielding adhesive layer and the first substrate.

12. The display device according to claim 7 or 11, characterized in that: The backlight module includes an iron shell, a light guide plate, and a support layer. The iron shell includes a bottom and a bent portion arranged around the bottom, the bent portion bends toward the direction close to the main body area. The light guide plate is located in the accommodating space formed by the iron shell. The support layer is located on a side of the light guide plate close to the display panel. The second light-shielding adhesive layer is located between the supporting layer and the first light-shielding adhesive tape, and the first light-shielding adhesive layer is located between the bending portion and the first light-shielding adhesive tape.

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