Display module

Abstract

The invention provides a display module. The display module comprises a display panel; the middle frame comprises a first side frame and a first top frame which are connected with each other; the middle frame is connected to the bottom frame in a clamping manner; one end of the elastic connecting piece is fixedly connected with the lower surface of the first top frame, the other end of the elastic connecting piece is arranged on the lower side of the display panel, and in the first direction, the first top frame and the display panel are arranged in a spaced mode; and the optical film group is positioned in the bottom frame, and the optical film group is positioned on the lower side of the elastic connecting piece. According to the display module, by changing the structure of the middle frame and the elastic connecting piece, one end of the elastic connecting piece is fixed to the lower side of the middle frame, the other end of the elastic connecting piece is arranged on the lower side of the display panel, the distance between the display panel and the optical film set is effectively reduced, the thickness of the whole display module is improved, and risks caused by middle frame assembling are reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of display devices, and particularly to a display module. Background Art

[0002] With the development of technology, display devices are widely used in many electronic products, such as mobile phones, tablet computers, automobiles, etc. Taking the in-vehicle display module as an example, there are two conventional structures. The first one is shown in Figure 1 , the display module includes a display panel 1', a middle frame 2', a foam 4', and an optical film group 5', etc. Among them, the foam 4' is located on the lower side of the lower polarizer of the display panel 1', and at the same time, the foam 4' is located on the upper side of the middle frame 2', and the optical film group 5' is located on the lower side of the middle frame 2'. At this time, the cover plate is fixedly connected to the middle frame 2' through a VHB double-sided adhesive. The thickness selection of the VHB double-sided adhesive is limited, and the distance between the lower polarizer and the top surface of the optical film group 5' is large, thereby increasing the thickness of the entire display module.

[0003] The second one is shown in Figure 2 , similar to the architecture of Figure 1 , further, the middle frame 2' is provided with a bent connecting portion 21'. The foam 4' is located on the lower side of the lower polarizer of the display panel 1', and at the same time, the foam 4' is located on the upper side of the bent connecting portion 21'. The optical film group 5' is located on the lower side of the bent connecting portion 21'. The thickness selection of the VHB double-sided adhesive is limited, and since the bent connecting portion 21' is designed as an L-shaped bending structure and needs to be formed through a punching process, the manufacturing difficulty is increased, and the size of the bent connecting portion 21' in the thickness direction of the display module is small, which will cause problems in the assembly when the middle frame 2' is engaged with other frames, and further easily cause the risk of the display panel 1' being broken.

[0004] Therefore, there is an urgent need to provide a new display module at present to solve the problems existing in the existing structure. Summary of the Invention

[0005] In view of the above technical problems, the present invention provides a display module, including:

[0006] A display panel;

[0007] A middle frame, the middle frame includes a connected first side frame and a first top frame;

[0008] A bottom frame, the middle frame is snap-fitted and connected to the bottom frame;

[0009] An elastic connecting member, one end of the elastic connecting member is fixedly connected to the lower surface of the first top frame, the other end of the elastic connecting member is disposed on the lower side of the display panel, and in a first direction, the first top frame and the display panel are spaced apart; and

[0010] Optical film stack, the optical film stack is located within the bottom frame and the optical film stack is located below the elastic connecting member.

[0011] In some embodiments, in the thickness direction of the display module, the elastic connecting member and the optical film stack located below it are spaced apart.

[0012] In some embodiments, in the thickness direction of the display module, the elastic connecting member has a first thickness H1, and there is a first gap H2 between the elastic connecting member and the optical film stack. The first thickness H1 is greater than the first gap H2, where H2 / H1 is between 0.2 - 0.4.

[0013] In some embodiments, the elastic connecting member includes a foam and a PET film that are adhered together, and the PET film faces the optical film stack.

[0014] In some embodiments, the bottom frame includes a vertically erected side plate portion and a horizontally arranged bottom plate portion. The side plate portion includes a first step portion and a second step portion. The first step portion is higher than the second step portion, and the first step portion abuts against the lower side of the first top frame.

[0015] In some embodiments, in the first direction, the first step portion has a first dimension A, the first top frame has a third dimension C, and the second dimension B of the elastic connecting member fixed to the lower surface of the first top frame is greater than half of the first dimension A and less than half of the third dimension C.

[0016] In some embodiments, in the first direction, the first top frame has a third dimension C, there is a fourth dimension D between the first top frame and the display panel, and the third dimension C of the first top frame is greater than the fourth dimension D, where D / C is between 0.3 - 0.5.

[0017] In some embodiments, in the first direction, the display panel has a display area and a peripheral area. The peripheral area is located outside the display area. The elastic connecting member has a fifth dimension E, and the first distance D1 between the side of the elastic connecting member close to the display area of the display panel and the display area is less than the fifth dimension E of the elastic connecting member, where D1 / E is between 0.25 - 0.35.

[0018] In some embodiments, the display module further includes:

[0019] A cover plate, the display panel is fixedly connected to the bottom surface of the cover plate;

[0020] Another elastic connecting member, which is fixed to the bottom surface of the cover plate surrounding the display panel;

[0021] Wherein, the cover plate and the first top frame are fixedly connected via the other elastic connecting member.

[0022] In some embodiments, the elastic connecting member further includes an adhesive layer, and the adhesive layer is only disposed at the first end, so that the elastic connecting member is fixedly connected to the first top frame via the adhesive layer.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] The display module provided by the present invention effectively reduces the distance between the display panel and the optical film group, improves the thickness of the entire display module and reduces the risk brought by the middle frame assembly by changing the settings of the middle frame and the elastic connecting member structure, fixing one end of the elastic connecting member to the lower side of the middle frame and setting the other end to the lower side of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention, and those of ordinary skill in the art can obtain other drawings based on these drawings without creative efforts.

[0026] Figure 1 FIG. 20 is a schematic structural diagram of a display module in the prior art;

[0027] Figure 2 FIG. 24 is another schematic structural diagram of a display module in the prior art;

[0028] Figure 3 FIG. 28 is a schematic structural diagram of the display module shown in the embodiment of the present invention;

[0029] Wherein:

[0030] 1, 1'-display panel;

[0031] 2, 2'-middle frame;

[0032] 21'-bending connection part;

[0033] 4-elastic connecting member;

[0034] 4'-foam;

[0035] 7-another elastic connecting member;

[0036] 21-first side frame;

[0037] 22-first top frame;

[0038] 3-bottom frame;

[0039] 31 - Side plate part;

[0040] 311 - First - order part;

[0041] 312 - Second - order part;

[0042] 32 - Bottom plate part;

[0043] 33 - Lamp board;

[0044] 41 - Foam;

[0045] 42 - PET film;

[0046] 5, 5’ - Optical film group;

[0047] 6 - Cover plate;

[0048] H1 - First thickness;

[0049] H2 - First gap;

[0050] A - First dimension;

[0051] C - Third dimension;

[0052] B - Second dimension;

[0053] D Fourth dimension;

[0054] E - Fifth dimension;

[0055] D1 - First distance;

[0056] AA - Display area;

[0057] m - m - First direction;

[0058] n - n - Thickness direction of the display module. Detailed implementation mode

[0059] The technical solution of the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments to further understand the purpose, solution and efficacy of the present invention, but it is not intended to limit the protection scope of the appended claims of the present invention.

[0060] In the specification and the subsequent claims, certain terms are used to refer to specific components or parts. Those of ordinary skill in the art should understand that technology users or manufacturers may use different nouns or terms to refer to the same component or part. The specification and the subsequent claims do not use the difference in names as a way to distinguish components or parts, but use the difference in the functions of components or parts as the criterion for distinction. The terms "comprising" and "including" mentioned throughout the specification and the subsequent claim items are open-ended terms, and should therefore be interpreted as "including but not limited to". In addition, the term "connected" herein includes any direct and indirect electrical connection means. Indirect electrical connection means include connection through other devices.

[0061] It should be noted that in the description of the present invention, the orientation or positional relationship or parameters indicated by terms such as "lateral", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "about", "substantially", "around", etc. are all based on the orientation or positional relationship shown in the drawings. This is only for the convenience of describing the present invention and simplifying the description content, and does not indicate or imply that the device or element referred to must have a specific orientation, a specific size, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention.

[0062] Refer to Figure 3 , Figure 3 is a schematic structural diagram of the display module shown in the embodiment of the present invention. An embodiment of the present invention provides a display module, which is, for example, applied to an in-vehicle display device, but is not limited thereto. It includes: a display panel 1, a middle frame 2, a bottom frame 3, an elastic connecting member 4, and an optical film group 5; the middle frame 2 includes a connected first side frame 21 and a first top frame 22; the middle frame 2 is snap-connected to the bottom frame 3; one end of the elastic connecting member 4 is fixedly connected to the lower surface of the first top frame 22, the other end of the elastic connecting member 4 is disposed on the lower side of the display panel 1, and in the first direction m-m, the first top frame 22 and the display panel 1 are spaced apart; the optical film group 5 is located within the bottom frame 3 and the optical film group 5 is located below the elastic connecting member 4. In one embodiment, the first direction m-m is the horizontal direction.

[0063] In the display module of the present invention, the elastic connecting member 4 is no longer located above the middle frame 2, but instead one end is fixedly connected to the lower surface of the first top frame 22, and the other end is disposed on the lower side of the display panel 1. In this way, the distance between the display panel 1 and the optical film group 5 can be effectively reduced, thereby effectively reducing the thickness of the display module, meeting the trend of thinning. In addition, the middle frame 2 does not need to be stamped to form a bent connecting portion, ensuring the structural stability of the display module and avoiding the risks brought by the assembly of the middle frame.

[0064] In one embodiment, in the thickness direction n-n of the display module, the elastic connecting member 4 is spaced apart from the optical film group 5 located below it. Thus, in the normal state, the elastic connecting member 4 does not contact the optical film group 5, providing a certain degree of freedom of movement for the thermal expansion and contraction of the optical film group 5 in the thickness direction n-n.

[0065] Further, in one embodiment, in the thickness direction n-n of the display module, the elastic connecting member 4 has a first thickness H1, and the distance between the elastic connecting member 4 and the optical film group 5 is a first gap H2. The first thickness H1 is greater than the first gap H2, where H2 / H1 is between 0.2 and 0.4. In this way, by defining a suitable first gap H2, it can not only provide a certain degree of freedom of movement for the thermal expansion and contraction of the optical film group 5, but also limit the movement range of the optical film group 5 (or press the optical film group 5), avoiding problems such as the optical film group 5 jumping off.

[0066] In one embodiment, in the thickness direction n-n, the lower surface of the display panel 1 is lower than the upper surface of the first top frame 22, for example, flush with the lower surface of the first top frame 22. At this time, the other end of the elastic connecting member 4 abuts against the lower side of the display panel 1 to play a dust-proof role. The elastic connecting member 4 includes a foam 41 and a PET film 42 that are bonded together, and the PET film 42 faces the optical film group 5. In this way, through the setting of the PET film, the stiffness of the foam combination is enhanced, which can not only ensure the restriction of the optical film group 5, but also keep the elastic connecting member 4 abutting against the lower side of the display panel 1 to ensure the dust-proof effect, etc. In addition, even if the elastic connecting member 4 contacts the optical film group 5 due to transportation or other activities, the smooth surface of the PET film can also reduce the friction risk between the elastic connecting member 4 and the optical film group 5, avoiding damage to the edges of the optical film group 5 due to friction and ensuring the quality of the display module.

[0067] In one embodiment, the elastic connecting member 4 further includes an adhesive layer (not shown), and the adhesive layer is only provided on the first end (upper surface) of the elastic connecting member 4 so that the elastic connecting member 4 is fixedly connected to the first top frame 22 via the adhesive layer. Further, since the adhesive layer is only provided at the first end, that is, the other areas of the upper surface of the elastic connecting member 4 are not provided with the adhesive layer, the second end of the elastic connecting member 4 can be movably disposed on the lower side of the display panel 1, providing free space for the two due to thermal expansion and contraction, manufacturing tolerances, etc., and ensuring the quality of the display module.

[0068] In one embodiment, the bottom frame 3 includes a side plate portion 31 erected vertically and a bottom plate portion 32 disposed horizontally. The side plate portion 31 and the bottom plate portion 32 are connected. Further, the side plate portion 31 is in a stepped shape and includes a first stepped portion 311 and a second stepped portion 312 connected to each other. The first stepped portion 311 is higher than the second stepped portion 312, and the first stepped portion 311 abuts against the lower side of the first top frame 22. In one embodiment, a light board 33 is further provided on the bottom plate portion 32 of the bottom frame 3. The light board 33 may include a circuit board and a plurality of light-emitting elements arranged in an array on the circuit board. The light board 33 is, for example, adhered to the bottom plate portion 32 by double-sided tape, but is not limited thereto. The optical film stack 5 is carried on the second stepped portion 312. Light emitted by the plurality of light-emitting elements on the light board 33 irradiates the optical film stack 5 and then enters the display panel 1 after diffusion and light homogenization by the optical film stack 5.

[0069] In one embodiment, in the first direction m-m, the first stepped portion 311 has a first dimension A, the first top frame 22 has a third dimension C, and a second dimension B of the elastic connecting member 4 fixed to the lower surface of the first top frame 22 is greater than half of the first dimension A and less than half of the third dimension C, that is, A / 2 < B < C / 2. Thus, since B > A / 2, there is sufficient fixed connection area between the elastic connecting member 4 and the first top frame 22 (for example, fixed by bonding), ensuring the bonding effect between the elastic connecting member 4 and the middle frame 2. Moreover, the dimension of the first top frame 22 extending into the display module from the first stepped portion 311 is not less than the fixed connection area between the elastic connecting member 4 and the first top frame 22, thereby also ensuring the bonding effect between the middle frame and the bottom frame. Also, since B < C / 2, while ensuring the bonding effect, the fixed connection area between the elastic connecting member 4 and the first top frame 22 and the dimension of the first top frame 22 extending into the display module from the first stepped portion 311 are limited, effectively limiting the border dimension of the display module here and meeting the narrow border trend.

[0070] In one embodiment, in the first direction m-m, the first top frame 22 has a third dimension C, the first top frame 22 is spaced from the display panel 1 by a fourth dimension D, and the third dimension C of the first top frame 22 is greater than the fourth dimension D. Among them, D / C is between 0.3 and 0.5. Thus, by setting the fourth dimension D, not only can an assembly and manufacturing tolerance space be provided to ensure that the middle frame 2 (the first top frame 22 thereof) does not interfere with the display panel 1 and prevent the display panel 1 from being damaged, but also the upper limit of the interval between the two can be defined within the process capability range, thereby effectively limiting the border dimension of the display module here and meeting the narrow border trend.

[0071] In one embodiment, in the first direction m-m, the display panel 1 has a display area AA and a peripheral area. The peripheral area is located outside the display area AA. The elastic connecting member 4 has a fifth dimension E. The first distance D1 between the side of the elastic connecting member 4 close to the display area AA of the display panel 1 and the display area AA is less than the fifth dimension E of the elastic connecting member 4. Among them, D1 / E is between 0.25 and 0.35. In this way, due to the existence of the first distance D1, a free space for thermal expansion and contraction, manufacturing and assembly tolerances, etc. of the edge of the elastic connecting member 4 (corresponding to the edge of the display panel 1) can be provided, avoiding the edge of the elastic connecting member 4 from entering the display area AA due to thermal expansion and contraction, manufacturing and assembly tolerances, etc., which affects the normal display of the display module. In addition, since there is no middle frame structure below the display panel 1, in addition to playing a role in dust prevention, etc., the edge light is mainly blocked by the elastic connecting member 5. By limiting the upper limit of the interval between the display area AA of the display panel 1 and the edge of the elastic connecting member 4, the problem that the elastic connecting member 4 cannot effectively block / limit the edge light and the display module has large-angle light leakage due to the excessive interval between the edge of the elastic connecting member 4 and the display area AA is avoided. In one embodiment, when the elastic connecting member 5 includes the PET film 42, the PET film 42 can be a dark-colored PET film, such as a black PET film, to assist in blocking the edge light.

[0072] In one embodiment, the display module further includes a cover plate 6 and another elastic connecting member 7. The display panel 1 is fixedly connected to the bottom surface of the cover plate 6. The another elastic connecting member 7 surrounds the display panel 1 and is fixedly connected to the bottom surface of the cover plate 6. Wherein, the cover plate 6 and the first top frame 22 are fixedly connected via the another elastic connecting member 7. Specifically, one side of the another elastic connecting member 7 is fixedly connected to the bottom surface of the cover plate 6, and the other side is fixedly connected to the first top frame 22. In one embodiment, when assembling the display module, first fixedly connect the display panel 1 to the cover plate 6. At this time, the position between the display panel 1 and the cover plate 6 is fixed. When the cover plate 6 is fixedly connected to the first top frame 22, the position of the display panel 1 relative to the first top frame 22 is fixed. The fixed connection between the cover plate 6 and the first top frame 22 depends on the position of the another elastic connecting member 7 relative to the first top frame 22. In actual operation, the another elastic connecting member 7 and the first top frame 22 can be assembled according to the foregoing second dimension B, etc. In this embodiment, through the position setting of the another elastic connecting member 7, while realizing the fixed connection between the cover plate 6 and the first top frame 22, the first top frame 22 and the display panel 1 are also spaced apart in the horizontal direction. In one embodiment, the another elastic connecting member 7 is a foam or a VHB double-sided tape, etc. Even if a VHB double-sided tape similar to the prior art is used between the cover plate 6 and the first top frame 22, in the present invention, one end of the elastic connecting member 4 is fixed to the lower side of the middle frame 2 (the first top frame 22), and the other end is arranged on the lower side of the display panel 1, the distance between the display panel 1 and the optical film group 5 can still be effectively reduced, and the thickness of the display module can still be reduced compared with the prior art.

[0073] In the technical solution provided by the present invention, in the display module, the elastic connecting member is no longer located on the upper side of the middle frame, but instead one end thereof is fixedly connected to the lower surface of the first top frame, and the other end is arranged on the lower side of the display panel. In this way, the distance between the display panel and the optical film group can be effectively reduced. Therefore, compared with the assembly method of the foam and the middle frame in the prior art, the structural setting of the middle frame and the elastic connecting member in the present invention effectively reduces the thickness of the display module, meeting the trend of thinning; in addition, the middle frame does not need to be stamped to form a bending connecting portion, reducing the risk brought by the assembly of the middle frame.

[0074] The above are only the preferred embodiments of the present invention, and are not limitations on the present invention in other forms. Any person skilled in the art may use the technical content disclosed above to make changes or modifications into equivalent embodiments with equivalent changes and apply them to other fields. However, as long as it does not depart from the technical solution content of the present invention, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention still belong to the protection scope of the technical solution of the present invention.

Claims

1. A display module, characterized in that: include: Display panel; A middle frame, the middle frame comprising a first side frame and a first top frame connected to each other; A bottom frame, the middle frame being snap-connected to the bottom frame; an elastic connecting member, one end of which is fixedly connected to the lower surface of the first top frame, and the other end of which is disposed at the lower side of the display panel, and in a first direction, the first top frame and the display panel are spaced apart; as well as An optical film group, wherein the optical film group is located in the bottom frame and the optical film group is located at the lower side of the elastic connecting member.

2. The display module according to claim 1, characterized in that: In the thickness direction of the display module, the elastic connecting member is spaced apart from the optical film set located therebelow.

3. The display module according to claim 2, characterized in that: In the thickness direction of the display module, the elastic connector has a first thickness H1, and a first gap H2 exists between the elastic connector and the optical film assembly. The first thickness H1 is greater than the first gap H2, wherein H2 / H1 is between 0.2-0.

4.

4. The display module according to claim 2, characterized in that: The elastic connecting member comprises foam and PET film which are in contact with each other, and the PET film faces the optical film set.

5. The display module according to claim 1, characterized in that: The bottom frame includes a vertically erected side plate portion and a horizontally arranged bottom plate portion, the side plate portion includes a first step portion and a second step portion, the first step portion is higher than the second step portion, and the first step portion abuts against the lower side of the first top frame.

6. The display module according to claim 5, characterized in that: In the first direction, the first step has a first dimension A, the first top frame has a third dimension C, and the second dimension B of the elastic connector fixed to the lower surface of the first top frame is greater than half of the first dimension A and less than half of the third dimension C.

7. The display module according to claim 1, characterized in that: In the first direction, the first top frame has a third dimension C, the first top frame is spaced apart from the display panel by a fourth dimension D, the third dimension C of the first top frame is greater than the fourth dimension D, wherein D / C is between 0.3-0.

5.

8. The display module according to claim 1, characterized in that: In the first direction, the display panel has a display area and a peripheral area, the peripheral area is located outside the display area, the elastic connector has a fifth dimension E, and a first distance D1 between a side of the elastic connector close to the display area of ​​the display panel and the display area is smaller than the fifth dimension E of the elastic connector, wherein D1 / E is between 0.25-0.

35.

9. The display module according to claim 1, characterized in that: Also includes: A cover plate, the display panel being fixedly connected to the bottom surface of the cover plate; another elastic connecting member, surrounding the display panel and fixedly connected to the bottom surface of the cover plate; Wherein, the cover plate and the first top frame are fixedly connected via the other elastic connecting member.

10. The display module according to claim 1, characterized in that: The elastic connector further includes an adhesive layer, and the adhesive layer is only disposed at the first end, so that the elastic connector is fixedly connected to the first top frame via the adhesive layer.

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