Display module and display device

Abstract

The utility model discloses a display module and a display device, and belongs to the technical field of display. The display module comprises a backlight module, a liquid crystal display panel and a bonding part. The bonding part is provided with at least one ventilation gap, an area defined by the first optical film, the first polaroid and the bonding part is not a sealed space, and gas in the area communicates with gas in the external environment through the ventilation gap. After the backlight module and the liquid crystal display panel are assembled, the process of attaching the protective cover plate to the display side of the liquid crystal display panel needs to be carried out in a vacuum environment, the liquid crystal display panel is placed in a normal environment after assembly is completed, and the process of vacuumizing and vacuum breaking needs to be carried out in the process of attaching the protective cover plate. In the vacuumizing and vacuum breaking process, air can be exhausted from the area or enter the area, so that the air pressure of the area is kept consistent with the external environment, the first optical film and the first polaroid are prevented from being attached together, and the display effect of the liquid crystal display panel is good.

Description

Technical Field

[0001] This application relates to the field of display technology, and in particular to a display module and display device. Background Technology

[0002] Liquid crystal displays (LCDs) are characterized by their small size, low power consumption, and lack of radiation, and therefore dominate the current display market.

[0003] The liquid crystal display device includes a backlight module and a liquid crystal display panel, which are bonded together by light-shielding tape. Furthermore, the edges of the prism sheet in the backlight module and the polarizer in the liquid crystal display panel are also bonded together with light-shielding tape, thus forming a sealed space.

[0004] However, after the backlight module and the LCD panel are assembled, the process of attaching the protective cover to the display side of the LCD panel needs to be carried out in a vacuum environment. The air pressure inside the assembled backlight module and LCD panel changes with the air pressure in the external environment. This causes the prism sheet, polarizer, and light-shielding adhesive to be affected by the external air pressure, resulting in the prism sheet and polarizer adhering together and the display effect of the LCD device being poor. Utility Model Content

[0005] This application provides a display module and a display device. It can solve the problem of poor display effect in existing display modules. The technical solution is as follows:

[0006] On the one hand, a display module is provided, including: a backlight module, a liquid crystal display panel, and an adhesive part;

[0007] The backlight module includes: a frame, and a light source component located within the frame; the light-emitting side of the light source component has a first optical film;

[0008] The liquid crystal display panel has a first polarizer on the side facing the backlight module;

[0009] The adhesive portion is located between the frame and the liquid crystal display panel, and the adhesive portion is distributed around the display area of ​​the liquid crystal display panel; a portion of the adhesive portion is bonded to the edge portion of the first polarizer and the edge portion of the first optical film respectively; another portion of the adhesive portion is bonded to the edge portion of the liquid crystal display panel and the frame respectively.

[0010] The adhesive portion has at least one ventilation gap, one end of which is connected to the area enclosed by the adhesive portion, and the other end of which is located on the outer boundary of the adhesive portion.

[0011] Optionally, the adhesive portion has a plurality of ventilation gaps, and the adhesive portion includes: a plurality of sub-adhesive strips distributed around the display area of ​​the liquid crystal display panel, and a ventilation gap is distributed between the ends of two adjacent sub-adhesive strips.

[0012] Optionally, the plurality of sub-adhesive strips include: two first sub-adhesive strips disposed opposite each other in a first direction, and two second sub-adhesive strips disposed opposite each other in a second direction; the extension direction of the first sub-adhesive strips is parallel to the second direction, and the extension direction of the second sub-adhesive strips is parallel to the first direction; the first direction and the second direction intersect.

[0013] There is a ventilation gap between the ends of the first sub-adhesive strip and the ends of the second sub-adhesive strip that are adjacent to each other.

[0014] Optionally, for the adjacent first sub-adhesive strip and the second sub-adhesive strip, the first sub-adhesive strip has a first protrusion and a first notch distributed in the first direction at the end near the second sub-adhesive strip, and the second sub-adhesive strip has a second protrusion and a second notch distributed in the first direction at the end near the first sub-adhesive strip.

[0015] Wherein, at least a portion of the first protrusion is located within the second notch, and the first protrusion is separated from the position where the second notch is located in the second sub-adhesive strip; at least a portion of the second protrusion is located within the first notch, and the second protrusion is separated from the position where the first notch is located in the first sub-adhesive strip; the first protrusion and the second protrusion are separated.

[0016] Optionally, the ventilation gap includes: a first sub-gap, a second sub-gap, and a third sub-gap connected in sequence; the first sub-gap is located in the second direction between the first protrusion and the position where the second notch is provided in the second sub-adhesive strip; the second sub-gap is located in the first direction between the first protrusion and the second protrusion; the third sub-gap is located in the second direction between the second protrusion and the position where the first notch is provided in the first sub-adhesive strip.

[0017] Optionally, the extension direction of the first sub-gap is parallel to the extension direction of the third sub-gap, and both are parallel to the first direction; the extension direction of the second sub-gap is parallel to the second direction.

[0018] Optionally, the frame has at least one first opening, which corresponds to the at least one ventilation gap, and the first opening is distributed on the frame at a position opposite to the corresponding ventilation gap.

[0019] Optionally, the frame includes: a connected base plate and an annular side plate, wherein the light source component is located on the base plate and distributed within the area enclosed by the annular side plate;

[0020] The annular side plate has at least one first opening, which communicates with the area enclosed by the annular side plate.

[0021] Optionally, the light source component includes: a side-lit light source, a light guide plate, and a plurality of optical films located within the frame; the light-emitting surface of the light source faces the side of the light guide plate, and the plurality of optical films are stacked on the light-emitting side of the light guide plate, wherein the first optical film is the optical film furthest from the light guide plate among the plurality of optical films;

[0022] The adhesive portion has at least one through groove that penetrates the adhesive portion in the thickness direction, and one end of the through groove is connected to the area enclosed by the adhesive portion; the orthographic projection of the through groove on the bottom plate in the frame overlaps with the orthographic projection of the light source on the bottom plate.

[0023] Optionally, the adhesive portion has a plurality of through grooves, which are arranged along the length direction of the light source.

[0024] Optionally, the light source includes: a support circuit section, an external circuit section, and a plurality of light-emitting units; the plurality of light-emitting units are fixed on the support circuit section, and the extending direction of the support circuit section is parallel to the arrangement direction of the plurality of light-emitting units; the first end of the external circuit section is connected to the support circuit section, and the extending direction of the external circuit section intersects the extending direction of the support circuit section.

[0025] The frame has a second opening, through which the second end of the external circuit section can pass through the second opening;

[0026] The orthographic projections of the plurality of through grooves on the base plate overlap with the orthographic projections of the support circuit portion on the base plate; and in the extending direction of the external circuit portion, the plurality of through grooves are distributed on the adhesive portion at positions opposite to the first end of the external circuit portion.

[0027] Optionally, the backlight module further includes: a reflective strip; the reflective strip is located on the side of the light source away from the base plate, a portion of the reflective strip is bonded to the edge of the light guide plate on the side away from the base plate, and another portion of the reflective strip is bonded to the frame;

[0028] The reflective strip has multiple through holes that penetrate the reflective strip in the thickness direction; and in the extension direction of the external circuit section, the multiple through holes are distributed on the reflective strip at positions opposite to the first end of the external circuit section.

[0029] Optionally, the reflective strip includes: a first reflective portion, a second reflective portion, and a third reflective portion connected together;

[0030] The first reflective portion is bonded to the edge of the light guide plate on the side opposite to the base plate, the third reflective portion is bonded to the frame, and the second reflective portion is located between the first reflective portion and the third reflective portion;

[0031] The second reflective portion has the plurality of through holes.

[0032] Optionally, the adhesive portion includes: a first adhesive portion, a second adhesive portion, and a third adhesive portion connected together;

[0033] The first adhesive portion is bonded to the edge portion of the first polarizer and the edge portion of the first optical film, respectively; the third adhesive portion is bonded to the edge portion of the liquid crystal display panel and the frame, respectively; and the second adhesive portion is located between the first adhesive portion and the third adhesive portion.

[0034] The through grooves are distributed on the first adhesive portion and the second adhesive portion, and the through grooves are located outside the third adhesive portion.

[0035] On the other hand, a display device is provided, comprising: a housing, and a display module connected to the housing, wherein the display module is any of the display modules described above.

[0036] The beneficial effects of the technical solutions provided in this application include at least the following:

[0037] The display module provided in this embodiment has at least one ventilation gap in the adhesive portion 300. Therefore, the area enclosed by the first optical film, the first polarizer, and the adhesive portion is no longer a sealed space. Gas in this area can circulate with the external environment through the ventilation gap. Since the process of attaching a protective cover to the display side of the liquid crystal display panel after assembly of the backlight module and the liquid crystal display panel needs to be performed in a vacuum environment, and then placed in a normal environment after assembly, the process of attaching the protective cover requires vacuuming and devastating. Therefore, the area enclosed by the first optical film, the first polarizer, and the adhesive portion is affected by external air pressure. Because the air in this area can circulate with the external environment through the ventilation gap, air can be discharged or enter this area during vacuuming and devastating, ensuring that the air pressure in this area is consistent with the external environment. This prevents the first optical film and the first polarizer from adhering together, resulting in a better display effect for the liquid crystal display panel. Attached Figure Description

[0038] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0039] Figure 1 This is a top view of a display module provided in an embodiment of this application;

[0040] Figure 2 yes Figure 1 The diagram shows the film structure of the display module at point A-A'.

[0041] Figure 3 This is a schematic diagram of the film layer structure of a display panel provided in an embodiment of this application;

[0042] Figure 4 yes Figure 1 The diagram shows the film structure of the display module at B-B'.

[0043] Figure 5 This is a partially enlarged top view of a display module according to an embodiment of this application;

[0044] Figure 6 This is a partially enlarged top view of another display module proposed in an embodiment of this application;

[0045] Figure 7 This is a partially enlarged top view of another display module provided in the embodiments of this application;

[0046] Figure 8 This is a partially enlarged top view of another display module provided in the embodiments of this application. Detailed Implementation

[0047] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0048] Please refer to Figure 1 and Figure 2 , Figure 1 This is a top view of a display module provided in an embodiment of this application. Figure 2 yes Figure 1 The diagram shows the film layer structure of the display module at point A-A'. The display module 000 includes: a backlight module 100, a liquid crystal display panel 200, and an adhesive portion 300.

[0049] The backlight module 100 in the display module 000 may include a frame 110 and a light source component 120 located within the frame 110. The light-emitting side of the light source component 120 has a first optical film 121. The first optical film 121 can adjust the light emitted from the backlight module 000, so that the light subsequently incident on the liquid crystal display panel 200 is more uniform.

[0050] The liquid crystal display panel 200 in the display module 000 has a first polarizer 210 on the side facing the backlight module 100.

[0051] The adhesive portion 300 in the display module 000 is located between the frame 110 and the liquid crystal display panel 200, and the adhesive portion 300 is distributed around the display area of ​​the liquid crystal display panel 200. A portion of the adhesive portion 300 is bonded to the edge portion of the first polarizer 210 and the edge portion of the first optical film 121, respectively; another portion of the adhesive portion 300 is bonded to the edge portion of the liquid crystal display panel 200 and the frame 110, respectively. That is, the backlight module 100 and the liquid crystal display panel 200 can be assembled together through the adhesive portion 300. Here, the adhesive portion 300 in the display module 000 can have a light-absorbing function to prevent light from leaking out of the display module 000, so that there is no light leakage at the edge of the liquid crystal display device.

[0052] The adhesive portion 300 has at least one ventilation gap 301, one end of which is connected to the area enclosed by the adhesive portion 300, and the other end of which is located on the outer boundary of the adhesive portion 300.

[0053] In this situation, the area enclosed by the first optical film 121, the first polarizer 210, and the adhesive portion 300 is no longer a sealed space. Gas within this area can circulate with the external environment through at least one ventilation gap 301. Since the process of attaching a protective cover to the display side of the liquid crystal display panel 200 after the backlight module 100 and the liquid crystal display panel 200 are assembled requires a vacuum environment, and the panel is then placed in a normal environment after assembly, the process of attaching the protective cover involves vacuuming and breaking the vacuum. Therefore, the area enclosed by the first optical film 121, the first polarizer 210, and the adhesive portion 300 is affected by external air pressure. Since the air in this area can circulate with the gas in the external environment through at least one ventilation gap 301, air can be discharged from or enter this area during the vacuuming and vacuum breaking process, so that the air pressure in this area is consistent with the external environment, avoiding the first optical film 121 and the first polarizer 210 from sticking together, and thus the display effect of the liquid crystal display panel 200 is better.

[0054] It should be noted that the external environment here refers to the environment outside the assembled backlight module 000 and liquid crystal display panel 200. In this case, the air in the space enclosed by the frame 110, the adhesive part 300 and the light source component 120 can also circulate with the outside through at least one ventilation gap 301.

[0055] In summary, the display module provided in this application embodiment, due to the presence of at least one ventilation gap in the adhesive portion, means that the area enclosed by the first optical film, the first polarizer, and the adhesive portion is no longer a sealed space. Gas within this area can circulate with the external environment through the at least one ventilation gap. Since the process of attaching a protective cover to the display side of the liquid crystal display panel after assembly of the backlight module and the liquid crystal display panel needs to be performed in a vacuum environment, and then placed in a normal environment after assembly, the process of attaching the protective cover requires vacuuming and devastating. Therefore, the area enclosed by the first optical film, the first polarizer, and the adhesive portion is affected by external air pressure. Because the air in this area can circulate with the external environment through at least one ventilation gap, air can be discharged or enter this area during vacuuming and devastating, ensuring that the air pressure in this area remains consistent with the external environment. This prevents the first optical film and the first polarizer from adhering together, resulting in a better display effect for the liquid crystal display panel.

[0056] In the embodiments of this application, please refer to Figure 3 , Figure 3This is a schematic diagram of the film layer structure of a display panel provided in an embodiment of this application. The liquid crystal display panel 200 in the display module 000 may further include: an array substrate 220 and a color filter substrate 230 disposed opposite to each other, and a second polarizer 240 located on the side of the color filter substrate 230 facing away from the array substrate 220. The first polarizer 210 is located on the side of the array substrate 220 facing away from the color filter substrate 230. It should be noted that the polarization direction of the first polarizer 210 may be perpendicular to the polarization direction of the second polarizer 240.

[0057] In the embodiments of this application, such as Figure 3 As shown, the liquid crystal display panel 200 in the display module 000 may further include a protective cover plate 400, which is located on the side of the second polarizer 240 opposite to the color filter substrate 230. When the light-emitting side of the liquid crystal display panel 200 is subjected to an impact force, the protective cover plate 400 can protect the liquid crystal display panel 200.

[0058] In the embodiments of this application, please refer to Figure 3 and Figure 4 , Figure 4 yes Figure 1 The diagram shows the film structure of the display module at B-B'. The frame 110 in the backlight module 100 may further include a bottom plate 111 and an annular side plate 112 connected to each other. The light source component 120 is located on the bottom plate 111 and distributed in the area enclosed by the annular side plate 112. The bottom plate 111 can effectively support the light source component 120 in the backlight module 100.

[0059] The light source component 120 in the backlight module 100 may include: a side-lit light source 122 located within the frame 110, a light guide plate 123, multiple optical films 124, and a reflector 125. The light-emitting surface of the light source 122 faces the side of the light guide plate 123. The multiple optical films 124 are stacked on the light-emitting side of the light guide plate 123, that is, the multiple optical films 124 are located on the side of the light guide plate 123 away from the base plate 111. The first optical film 121 is the optical film farthest from the light guide plate 123 among the multiple optical films 124. The reflector 125 is located between the light guide plate 123 and the base plate 111.

[0060] Here, light emitted from the light-emitting surface of the light source 122 can enter the interior of the light guide plate 123 from its side, and the light entering the interior of the light guide plate 123 can be guided by the light guide plate 123 to its light-emitting side before exiting. The light emitted from the backlight module 100 can be directed toward the liquid crystal display panel 200, enabling the liquid crystal display panel to display images normally. The reflective sheet 125 can reflect the light emitted from the side of the light guide plate 123 facing the base plate 111 back to the light guide plate 123, so that the light reflected back to the light guide plate 123 can be emitted from the side of the light guide plate 123 toward the optical film 124, thereby improving the light emission efficiency of the backlight module 100. The optical film 124 can adjust the light emitted from the light guide plate 123, making the light directed toward the liquid crystal display panel 200 more uniform.

[0061] It should be noted that, as Figure 1 and Figure 4 As shown, the light source 122 in the light source component 120 may include: a support circuit section 122a, an external circuit section 122b, and a plurality of light-emitting units 122c. The plurality of light-emitting units 122c are fixed to the support circuit section 122a, and the extending direction of the support circuit section 122a is parallel to the arrangement direction of the plurality of light-emitting units 122c. The first end of the external circuit section 122b is connected to the support circuit section 122a, and the extending direction of the external circuit section 122b intersects the extending direction of the support circuit section 122a. In this case, the frame 100 in the display module 000 has a second opening K2, through which the second end of the external circuit section 122b can pass.

[0062] For example, the second opening K2 connects the external environment and the interior of the display module 000. Thus, after air in the area enclosed by the first optical film 121, the first polarizer 210, and the adhesive portion 300 is discharged through the ventilation gap 301, this air can also be discharged into the external environment through the second opening K2. Before the air enters the area enclosed by the first optical film 121, the first polarizer 210, and the adhesive portion 300 through the ventilation gap 301, this air can enter the display module 000 from the external environment through the second opening K2, and then enter the area enclosed by the first optical film 121, the first polarizer 210, and the adhesive portion 300. That is, the area enclosed by the first optical film 121, the first polarizer 210, and the adhesive portion 300 is affected by external air pressure. The air in this area can circulate with the external environment through the ventilation gap 301 and the second opening K2, so that the air pressure in this area is consistent with the external environment, avoiding the first optical film 121 and the first polarizer 210 from sticking together, thus resulting in a better display effect of the liquid crystal display panel 200.

[0063] Here, the light-emitting surfaces of all the multiple light-emitting units 220 need to face the side of the light guide plate 300, and it is necessary to ensure that the light-emitting surfaces of the multiple light-emitting units 220 are in contact with the side of the light guide plate 300. For example, each light-emitting unit 220 can be a light-emitting diode (LED).

[0064] like Figure 4 As shown, the backlight module 100 in the display panel 000 may further include a reflective strip 130. The reflective strip 130 is located on the side of the light source 122 away from the base plate 111. A portion of the reflective strip 130 is bonded to the edge of the light guide plate 123 on the side away from the base plate 111, and another portion of the reflective strip 130 is bonded to the frame 100. Light rays with a wide viewing angle emitted from the light source 122 can be reflected back into the light guide plate 123 by the reflective strip 123, and then emitted from the light-emitting side of the light guide plate 123, further improving the light emission efficiency of the backlight module 100.

[0065] In the embodiments of this application, such as Figure 1 As shown, the adhesive portion 300 in the display module 000 has a plurality of ventilation gaps 301. The adhesive portion 300 includes a plurality of sub-adhesive strips 310 distributed around the display area of ​​the liquid crystal display panel 200, and a ventilation gap 301 is distributed between the ends of two adjacent sub-adhesive strips 310.

[0066] For example, such as Figure 1 As shown, the display module 000 is typically rectangular, and the adhesive portion 300 has four ventilation gaps 301, which are located at the four corners of the display module 000. The plurality of sub-adhesive strips 310 include two first sub-adhesive strips 311 arranged opposite each other in a first direction x, and two second sub-adhesive strips 312 arranged opposite each other in a second direction y; the extension direction of the first sub-adhesive strips 311 is parallel to the second direction y, and the extension direction of the second sub-adhesive strips 312 is parallel to the first direction x. The first direction x and the second direction y intersect. Furthermore, the relatively regular shapes of the two first sub-adhesive strips 311 and the two second sub-adhesive strips 312 effectively reduce the difficulty of splicing the four sub-adhesive strips 310.

[0067] There is a ventilation gap 301 between the ends of the adjacent first sub-adhesive strip 311 and the ends of the second sub-adhesive strip 312.

[0068] In this situation, the gas in the area enclosed by the first optical film 121, the first polarizer 210, and the adhesive portion 300 can circulate with the gas in the external environment through multiple ventilation gaps 301, and these gaps accelerate the flow of gas between the area and the external environment. Since the process of attaching a protective cover to the display side of the liquid crystal display panel 200 after the backlight module 100 and the liquid crystal display panel 200 are assembled needs to be carried out in a vacuum environment, and then placed in a normal environment after assembly, the process of attaching the protective cover requires vacuuming and breaking the vacuum. Therefore, the area enclosed by the first optical film 121, the first polarizer 210, and the adhesive portion 300 will be affected by external air pressure. Because the air in this area can circulate with the gas in the external environment through multiple ventilation gaps 301, during the vacuuming and vacuum breaking process, air can be quickly discharged from or enter this area, so that the air pressure in this area is consistent with the external environment, avoiding the first optical film 121 and the first polarizer 210 from sticking together, thus resulting in a better display effect of the liquid crystal display panel 200.

[0069] It should be noted that, please refer to Figure 5 , Figure 5 This is a partially enlarged top view of a display module according to an embodiment of this application. For the adjacent first sub-adhesive strip 311 and second sub-adhesive strip 312, the end of the first sub-adhesive strip 311 near the second sub-adhesive strip 312 has: a first protrusion 311a and a first notch 311b distributed in the first direction x, and the end of the second sub-adhesive strip 312 near the first sub-adhesive strip 311 has: a second protrusion 312a and a second notch 312b distributed in the first direction x.

[0070] At least a portion of the first protrusion 311a is located within the second notch 312b, and the first protrusion 311a is separated from the position where the second notch 312b is located in the second sub-adhesive strip 312; at least a portion of the second protrusion 312a is located within the first notch 311b, and the second protrusion 312a is separated from the position where the first notch 311b is located in the first sub-adhesive strip 311; the first protrusion 311a and the second protrusion 312a are separated. This ensures that a ventilation gap 301 can be formed between the ends of the adjacent first sub-adhesive strips 311 and the ends of the second sub-adhesive strips 312.

[0071] In this configuration, the ventilation gap 301 in the adhesive portion 300 includes: a first sub-gap 301a, a second sub-gap 301b, and a third sub-gap 301c connected sequentially. The first sub-gap 301a is located in the second direction y between the first protrusion 311a and the position where the second notch 312b is provided in the second sub-adhesive strip 312. The second sub-gap 301b is located in the first direction x between the first protrusion 311a and the second protrusion 312a. The third sub-gap 301c is located in the second direction y between the second protrusion 312a and the position where the first notch 311b is provided in the first sub-adhesive strip 311. That is, the extension direction of the first sub-gap 301a intersects the extension direction of the second sub-gap 301b, and the extension direction of the third sub-gap 301c intersects the extension direction of the second sub-gap 301b. In this way, a portion of the light emitted from the backlight module 100 may enter the ventilation gap 301 in the adhesive portion 300. The light entering the first sub-gap 301a can be blocked by the first protrusion 311a or the second protrusion 312a, thereby effectively preventing light leakage from the display module 000 and preventing light leakage from the edges of the liquid crystal display device. In addition, to avoid bright lines appearing in the ventilation gap 301 in the adhesive portion 300, the width of the ventilation gap 301 is less than or equal to 0.15 mm.

[0072] For example, the extension direction of the first sub-slit 301a is parallel to the extension direction of the third sub-slit 301c, and both are parallel to the first direction x; the extension direction of the second sub-slit 301b is parallel to the second direction y.

[0073] Here, the second opening K2 connects the external environment and the interior of the display module 000. In this way, after the air in the area enclosed by the first optical film 121, the first polarizer 210 and the adhesive part 300 is discharged through the multiple ventilation gaps 301, this air can be discharged to the external environment through the second opening K2. Before the air enters the area enclosed by the first optical film 121, the first polarizer 210 and the adhesive part 300 through the multiple ventilation gaps 301, this air can enter the display module 000 from the external environment through the second opening K2, and then enter the area enclosed by the first optical film 121, the first polarizer 210 and the adhesive part 300.

[0074] In the embodiments of this application, please refer to Figure 6 , Figure 6 This is a partially enlarged top view of another display module proposed in an embodiment of this application. It should be noted that... Figure 3 It can be Figure 6The diagram shows the film structure of the display module at C-C'. The frame 110 has at least one first opening K1, which corresponds to at least one ventilation gap 301. The first openings K1 are distributed on the frame 110 at positions opposite to the corresponding ventilation gaps 301. When the adhesive portion 300 has multiple ventilation gaps 301, the frame 110 may have multiple first openings K1 corresponding one-to-one with the multiple ventilation gaps 301.

[0075] In this configuration, the ventilation gaps 301 and the corresponding first openings K1 form ventilation channels, and the distance between these channels is very small. This allows the area enclosed by the first optical film 121, the first polarizer 210, and the adhesive portion 300 to connect with the external environment through the ventilation gaps 301 and the corresponding first openings K1. Thus, the gas in the area enclosed by the first optical film 121, the first polarizer 210, and the adhesive portion 300 can directly circulate with the gas in the external environment through the multiple ventilation gaps 301 and the corresponding first openings K1, thereby effectively accelerating the gas exchange rate between the area and the external environment.

[0076] Since the process of attaching a protective cover to the display side of the LCD panel 200 after the backlight module 100 and the LCD panel 200 are assembled needs to be carried out in a vacuum environment, and then placed in a normal environment after assembly, the process of attaching the protective cover requires vacuuming and devastating. Therefore, the area enclosed by the first optical film 121, the first polarizer 210, and the adhesive part 300 will be affected by the external air pressure. Since the air in this area can circulate with the external environment through multiple ventilation gaps 301 and corresponding first openings K1, air can be quickly discharged from or enter this area during the vacuuming and devastating process, so that the air pressure in this area is consistent with the external environment, preventing the first optical film 121 and the first polarizer 210 from sticking together, thus resulting in a better display effect of the LCD panel 200.

[0077] In the embodiments of this application, please refer to Figure 7 , Figure 7 This is a partially enlarged top view of another display module provided in the embodiments of this application. It should be noted that... Figure 4 It can be Figure 7 The diagram shows the film layer structure of the display module at point D-D'. The adhesive portion 300 in the display module 000 may also have at least one through groove O, which penetrates the adhesive portion 300 in the thickness direction, and one end of the through groove 300 communicates with the area enclosed by the adhesive portion 300; the orthographic projection of the through groove O on the base plate 111 in the frame 110 overlaps with the orthographic projection of the light source 122 on the base plate 111.

[0078] In this configuration, the gas in the area enclosed by the first optical film 121, the first polarizer 210, and the adhesive portion 300 can directly circulate with the gas in the external environment through at least one through-slot O and at least one ventilation gap 301, further accelerating the gas flow between the area and the external environment. Since the process of attaching a protective cover to the display side of the liquid crystal display panel 200 after the backlight module 100 and the liquid crystal display panel 200 are assembled requires a vacuum environment, and the panel is then placed in a normal environment after assembly, meaning the process of attaching the protective cover involves vacuuming and breaking the vacuum. Therefore, the area enclosed by the first optical film 121, the first polarizer 210, and the adhesive portion 300 will be affected by external air pressure. Since the air in this area can circulate with the gas in the external environment through at least one through slot O and at least one ventilation gap 301, air can be quickly discharged from or enter this area during the vacuuming and vacuum breaking process, so that the air pressure in this area is consistent with the external environment, avoiding the first optical film 121 and the first polarizer 210 from sticking together, and thus the display effect of the liquid crystal display panel 200 is better.

[0079] It should be noted that when the adhesive portion 300 has multiple through slots O, the multiple through slots O are arranged along the length direction of the light source 122. In this way, the gas in the area enclosed by the first optical film 121, the first polarizer 210 and the adhesive portion 300 can directly circulate with the gas in the external environment through the multiple through slots O, further accelerating the gas circulation speed between the area and the external environment.

[0080] In the embodiments of this application, please refer to Figure 4 and Figure 8 , Figure 8 This is a partially enlarged top view of another display module provided in an embodiment of this application. It should be noted that... Figure 4 It can be Figure 8 The diagram shows the film structure of the display module at E-E'. The reflective strip 130 in the backlight module 100 may have multiple through holes G, which penetrate the reflective strip 130 in the thickness direction. Furthermore, in the extension direction of the external circuit section 122b, the multiple through holes G are distributed on the reflective strip 130 at positions opposite to the first end of the external circuit section 122b.

[0081] Furthermore, the orthographic projections of the multiple through slots O on the base plate 111 overlap with the orthographic projections of the support circuit section 122a on the base plate 111. In the extending direction of the external circuit section 122b, the multiple through slots O are distributed on the adhesive section 300 at positions opposite to the first end of the external circuit section 122b. Thus, in the extending direction of the external circuit section 122b, the multiple through slots O, the multiple through holes G, and the second opening K2 can form a ventilation channel, and the short distance of this ventilation channel facilitates faster gas flow between the area enclosed by the first optical film 121, the first polarizer 210, and the adhesive section 300 and the external environment.

[0082] Since the process of attaching a protective cover to the display side of the LCD panel 200 after the backlight module 100 and the LCD panel 200 are assembled needs to be carried out in a vacuum environment, and then placed in a normal environment after assembly, the process of attaching the protective cover requires vacuuming and devastating. Therefore, the area enclosed by the first optical film 121, the first polarizer 210, and the adhesive part 300 will be affected by the external air pressure. Since the air in this area can circulate with the external environment through multiple through slots O, multiple through holes G, and the second opening K2, air can be quickly discharged from or enter this area during the vacuuming and devastating process, so that the air pressure in this area is consistent with the external environment, preventing the first optical film 121 and the first polarizer 210 from adhering together, thus resulting in a better display effect of the LCD panel 200.

[0083] It should be noted that, as Figure 4 As shown, when the reflective strip 130 has multiple through holes G, the reflective strip 130 may include a first reflective portion 131, a second reflective portion 132, and a third reflective portion 133 connected to each other. The first reflective portion 131 of the reflective strip 130 is bonded to the edge of the light guide plate 123 on the side opposite to the base plate 111, the third reflective portion 133 of the reflective strip 130 is bonded to the frame 110, and the second reflective portion 132 of the reflective strip 130 is located between the first reflective portion 131 and the third reflective portion 133.

[0084] The second reflective portion 132 has multiple through holes G. Since the second reflective portion 132 is not bonded to other structures in the backlight module 100, the multiple through holes G in the second reflective portion 132 can effectively connect the space on the side of the second reflective portion 132 away from the base plate 111 with the space on the side of the second reflective portion 132 facing the base plate 111, thereby forming a smooth ventilation channel and further accelerating the gas flow between the area enclosed by the first optical film 121, the first polarizer 210 and the adhesive portion 300 and the external environment.

[0085] In this case, the adhesive portion 300 may include a first adhesive portion 300a, a second adhesive portion 300b, and a third adhesive portion 300c that are connected to each other.

[0086] The first adhesive portion 300a is bonded to the edge portion of the first polarizer 210 and the edge portion of the first optical film 121, respectively. The third adhesive portion 300c is bonded to the edge portion of the liquid crystal display panel 200 and the frame 110, respectively. The second adhesive portion 300b is located between the first adhesive portion 300a and the third adhesive portion 300c.

[0087] The through-slots O are distributed on the first bonding portion 300a and the second bonding portion 300b, and are located outside the third bonding portion 300c. In this case, the orthographic projection of the through-slots O on the base plate 111 overlaps with the orthographic projection of the multiple through holes on the base plate 111. Thus, the length of the through-slots O is relatively long in the extension direction of the external circuit portion 122b, resulting in better gas flow at the location of the through-slots O. This ensures that the gas in the area enclosed by the first optical film 121, the first polarizer 210, and the bonding portion 300 can enter or exit quickly through the through-slots O. The through-slots O are located outside the third bonding portion 300c, resulting in better bonding between the third bonding portion 300c and the frame 100. This ensures better bonding between the backlight module 100 and the liquid crystal display panel 200, and effectively prevents light leakage from the display module 000, so that there is no light leakage at the edge of the liquid crystal display device.

[0088] In summary, the display module provided in this application embodiment, due to the presence of at least one ventilation gap in the adhesive portion, means that the area enclosed by the first optical film, the first polarizer, and the adhesive portion is no longer a sealed space. Gas within this area can circulate with the external environment through the at least one ventilation gap. Since the process of attaching a protective cover to the display side of the liquid crystal display panel after assembly of the backlight module and the liquid crystal display panel needs to be performed in a vacuum environment, and then placed in a normal environment after assembly, the process of attaching the protective cover requires vacuuming and devastating. Therefore, the area enclosed by the first optical film, the first polarizer, and the adhesive portion is affected by external air pressure. Because the air in this area can circulate with the external environment through at least one ventilation gap, air can be discharged or enter this area during vacuuming and devastating, ensuring that the air pressure in this area remains consistent with the external environment. This prevents the first optical film and the first polarizer from adhering together, resulting in a better display effect for the liquid crystal display panel.

[0089] This application provides a display device, including: a housing, and a display module connected to the housing, wherein the housing can protect the display module. The display module is the one described above.

[0090] For example, the display device can be any product or component with display function, such as electronic paper, mobile phone, tablet computer, television, monitor, laptop computer, digital photo frame, navigator, etc.

[0091] It should be noted that the dimensions of layers and regions may be exaggerated in the accompanying drawings for clarity. Furthermore, it is understood that when an element or layer is referred to as being "on" another element or layer, it can be directly on the other element, or there may be intermediate layers. Additionally, it is understood that when an element or layer is referred to as being "below" another element or layer, it can be directly below the other element, or there may be more than one intermediate layer or element. Furthermore, it is also understood that when a layer or element is referred to as being "between" two layers or two elements, it can be the only layer between the two layers or two elements, or there may be more than one intermediate layer or element. Similar reference numerals throughout indicate similar elements.

[0092] In this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The term "multiple" refers to two or more unless otherwise expressly defined.

[0093] The above description is merely an optional embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A display module, characterized by The application relates to a backlight module, a liquid crystal display panel and a bonding part. The backlight module comprises a frame and light source components in the frame; the light source components have a first optical film on the light emitting side; The liquid crystal display panel has a first polarizer on the side facing the backlight module; The bonding part is between the frame and the liquid crystal display panel and is distributed around the display area of the liquid crystal display panel; part of the bonding part is bonded with the edge of the first polarizer and the edge of the first optical film respectively; another part of the bonding part is bonded with the edge of the liquid crystal display panel and the frame respectively; The bonding part has at least one air passage gap, one end of the air passage gap is communicated with the area surrounded by the bonding part, and the other end of the air passage gap is on the outer boundary of the bonding part. The bonding part has a plurality of air passage gaps, and the bonding part comprises a plurality of sub-bonding strips distributed around the display area of the liquid crystal display panel; one air passage gap is distributed between the ends of two adjacent sub-bonding strips.

2. The display module of claim 1, wherein, The plurality of sub-bonding strips comprises two first sub-bonding strips arranged opposite in a first direction and two second sub-bonding strips arranged opposite in a second direction; the extension direction of the first sub-bonding strips is parallel to the second direction, the extension direction of the second sub-bonding strips is parallel to the first direction; the first direction and the second direction intersect; 3. The display module of claim 2, wherein, One air passage gap is distributed between the ends of the first sub-bonding strips and the second sub-bonding strips arranged adjacent. For the first sub-bonding strips and the second sub-bonding strips arranged adjacent, the end of the first sub-bonding strip close to the second sub-bonding strip has a first protruding part and a first notch distributed in the first direction, and the end of the second sub-bonding strip close to the first sub-bonding strip has a second protruding part and a second notch distributed in the first direction; 4. The display module of claim 3, wherein, At least part of the first protruding part is located in the second notch, and the first protruding part is separated from the position of the second sub-bonding strip where the second notch is arranged; at least part of the second protruding part is located in the first notch, and the second protruding part is separated from the position of the first sub-bonding strip where the first notch is arranged; the first protruding part is separated from the second protruding part. The air passage gap comprises a first sub-gap, a second sub-gap and a third sub-gap communicated in sequence; the first sub-gap is located between the first protruding part and the position of the second sub-bonding strip where the second notch is arranged in the second direction; the second sub-gap is located between the first protruding part and the second protruding part in the first direction; the third sub-gap is located between the second protruding part and the position of the first sub-bonding strip where the first notch is arranged in the second direction.

5. The display module of claim 4, wherein, The extension direction of the first sub-gap is parallel to the extension direction of the third sub-gap, and both are parallel to the first direction; the extension direction of the second sub-gap is parallel to the second direction.

6. The display module of claim 5, wherein, ​ 7. The display module of any of claims 1-6, wherein, The frame body has at least one first opening corresponding to the at least one ventilation gap, the first opening being distributed on the frame body at positions opposite to the corresponding ventilation gaps.

8. The display module of claim 7, wherein, The frame body comprises a bottom plate and a ring-shaped side plate connected to each other, the light source component being located on the bottom plate and distributed within an area enclosed by the ring-shaped side plate; The ring-shaped side plate has the at least one first opening, the first opening being in communication with the area enclosed by the ring-shaped side plate.

9. The display module of any of claims 1-6, 8, wherein, The light source component comprises a side-in light source, a light guide plate and a plurality of optical films located within the frame body; a light emitting surface of the light source faces a side surface of the light guide plate; the plurality of optical films are arranged in layers on a light emitting side of the light guide plate; and the first optical film is the optical film farthest from the light guide plate among the plurality of optical films. The adhesive portion has at least one through groove penetrating the adhesive portion in a thickness direction of the adhesive portion, and one end of the through groove is in communication with an area enclosed by the adhesive portion; a normal projection of the through groove on the bottom plate of the frame body overlaps a normal projection of the light source on the bottom plate.

10. The display module of claim 9, wherein, The adhesive portion has a plurality of through grooves arranged along a length direction of the light source.

11. The display module of claim 10, wherein, The light source comprises a support circuit portion, an external circuit portion and a plurality of light emitting units; the plurality of light emitting units are fixed on the support circuit portion, and an extension direction of the support circuit portion is parallel to an arrangement direction of the plurality of light emitting units; a first end of the external circuit portion is connected to the support circuit portion, and an extension direction of the external circuit portion intersects the extension direction of the support circuit portion; The frame body has a second opening through which a second end of the external circuit portion can pass out; A normal projection of the plurality of through grooves on the bottom plate overlaps a normal projection of the support circuit portion on the bottom plate; and in the extension direction of the external circuit portion, the plurality of through grooves are distributed on the adhesive portion at positions opposite to the first end of the external circuit portion.

12. The display module of claim 11, wherein, The backlight module further comprises a reflective strip; the reflective strip is located on a side of the light source away from the bottom plate; a part of the reflective strip is adhered to an edge of a side of the light guide plate away from the bottom plate; and another part of the reflective strip is adhered to the frame body; The reflective strip has a plurality of through holes penetrating the reflective strip in a thickness direction of the reflective strip; and in the extension direction of the external circuit portion, the plurality of through holes are distributed on the reflective strip at positions opposite to the first end of the external circuit portion.

13. The display module of claim 12, wherein, The reflective strip comprises a first reflective portion, a second reflective portion and a third reflective portion connected to each other; The first reflective portion is adhered to the edge of the side of the light guide plate away from the bottom plate; the third reflective portion is adhered to the frame body; and the second reflective portion is located between the first reflective portion and the third reflective portion; The second reflective portion has the plurality of through holes.

14. The display module of any of claims 10-13, wherein, The bonding part comprises a first bonding part, a second bonding part and a third bonding part connected with each other; The first bonding part is bonded with the edge part of the first polarizer and the edge part of the first optical film respectively, the third bonding part is bonded with the edge part of the liquid crystal display panel and the frame respectively, and the second bonding part is located between the first bonding part and the third bonding part; The through grooves are distributed on the first bonding part and the second bonding part, and the through grooves are located outside the third bonding part.

15. A display device comprising: The display module comprises a shell and a display module connected with the shell, and the display module is any one of claims 1-14.

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