Backlight module and display device
By adopting the split rubber frame structure and buffer design of multiple elastic parts in the backlight module, the problem of glass vulnerability in the test of the backlight module is solved, the yield rate and usage quality are improved, and the stability of the display device is ensured. and durability.
Patent Information
- Application Number
- CN202421034355.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-13
- Publication Date
- 2024-12-24
- Estimated Expiration
- 2034-05-13
AI Technical Summary
In the dynamic and static pressure test and hinge durability test, the reduction of the bearing area of the adhesive frame leads to an increase in pressure, the glass is easily damaged or broken, and the weak adhesive bond during the test leads to structural damage, affecting yield and use. quality.
Adopt a separate rubber frame structure, the first rubber frame is located above the second rubber frame, and multiple elastic parts, such as spring, foam and shrapnel structures, are arranged between the two for buffering and bearing, and to increase the glass Displacement amount and stability to reduce the risk of local deformation and fragmentation.
Through the buffering effect of the elastic parts, the testing pressure is shared, the risk of local deformation and fragmentation of the glass is reduced, the yield rate and usage quality of the backlight module are improved, the bearing capacity range is increased, and the stability and durability of the display device are ensured.
Smart Images
Figure CN222232838U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of display technology, in particular to a backlight module and a display device. Background Art
[0002] Liquid crystal display (LCD) has many advantages such as being thin, light, energy-saving, and radiation-free. It is widely used in electronic devices such as high-definition digital televisions, desktop computers, personal digital assistants (PDAs), laptops, mobile phones, digital cameras, etc. Most of the liquid crystal display devices in the related art are backlit liquid crystal display devices, which include a liquid crystal panel and a backlight module. The working principle of the liquid crystal panel is to place liquid crystal molecules between two parallel glass substrates. There are many vertical and horizontal thin wires between the two glass substrates. The liquid crystal molecules are controlled to change direction by powering on or off, and the light from the backlight module is refracted to produce a picture. Since the liquid crystal panel itself does not emit light, it needs to rely on the light source provided by the backlight module to display the image normally. Therefore, the backlight module is one of the key structures of the liquid crystal display device.
[0003] like Figure 1As shown, the backlight module in the related art generally includes a back plate 100', a plastic frame 200' and a glass 300'. The back plate 100' is provided with a receiving space for receiving the optical film. The plastic frame 200' is provided in the back plate 100' and is arranged around the optical film. The glass 300' is supported on the upper surface of the plastic frame 200' and is bonded to the plastic frame 200' using adhesive. The adhesive is double-sided adhesive, single-sided adhesive or foam adhesive. After the LCD display device is assembled, it is necessary to undergo dynamic and static pressure tests and hinge durability tests. The static pressure test simulates the pressure on the display device in a static state, thereby evaluating the durability and reliability of the display device when it bears a fixed load for a long time; the dynamic pressure test simulates various dynamic pressure scenarios that the display device may encounter during use, to evaluate the adaptability and stability of the display device under complex and dynamic environmental conditions; the hinge durability test is used to evaluate the stability and durability of the glass 300' during repeated opening and closing. However, when performing dynamic and static pressure tests and hinge durability tests, it is necessary to apply pressure on the glass 300'. As the prior art requires narrow borders for display devices, the area on the rubber frame 200' used to support the glass 300' becomes smaller, resulting in a greater pressure on the rubber frame 200' under the same pressure specifications, which in turn leads to a disguised tightening of the mechanical specifications of the display device. In addition, since the pressure head area used in the test is small, the local deformation of the rubber frame 200' is large, and the foam used as the adhesive is thin, which increases the probability of damage to the internal structure of the glass 300' during the test, and it is easy to cause fragments due to deformation. In response to the above technical problems, the solution in the related art is to increase the thickness of the adhesive between the glass 300' and the rubber frame 200', and select a soft foam with a low foaming density. However, this solution has certain limitations on the selection of foam, resulting in increased processing costs.
[0004] Therefore, there is an urgent need to provide a backlight module to solve the above problems. Utility Model Content
[0005] The utility model aims to provide a backlight module and a display device, which can reduce the breakage rate during the testing process and increase the load-bearing range during use, thereby ensuring the yield rate and use quality of the display device.
[0006] As conceived above, the technical solution adopted by the utility model is:
[0007] A backlight module, comprising:
[0008] A back plate having a receiving space therein;
[0009] A plastic frame is arranged in the accommodating space, the plastic frame comprises a first plastic frame and a second plastic frame, and the first plastic frame is located above the second plastic frame;
[0010] Glass, carried on the first plastic frame;
[0011] The buffer structure includes a first elastic member arranged between the first rubber frame and the second rubber frame.
[0012] Preferably, the first elastic member is adhered to the first plastic frame; and / or the first elastic member is adhered to the second plastic frame.
[0013] Preferably, there are a plurality of the first elastic members, and the plurality of the first elastic members are distributed at intervals along the circumference of the first rubber frame.
[0014] Preferably, the first elastic member includes one of a spring, foam and a first elastic sheet structure.
[0015] Preferably, the first elastic member comprises springs and foams alternately arranged along the circumference of the first rubber frame; or
[0016] The first elastic member includes a spring and a first elastic sheet structure alternately arranged along the circumference of the first rubber frame; or
[0017] The first elastic member includes foam and a first elastic sheet structure alternately arranged along the circumference of the first rubber frame; or
[0018] The first elastic member includes a spring, a foam and a first elastic sheet structure alternately arranged along the circumference of the first rubber frame.
[0019] Preferably, the plastic frame further includes a telescopic connecting member, and the telescopic connecting member is connected between the first plastic frame and the second plastic frame.
[0020] Preferably, the buffer structure further includes a second elastic member, and the second elastic member is arranged between the second rubber frame and the back plate.
[0021] Preferably, the second elastic member is a second elastic sheet structure integrally formed on the back plate.
[0022] Preferably, the second elastic member has a thickness of 0.15 mm to 0.35 mm.
[0023] The utility model also provides a display device, comprising a liquid crystal panel and the backlight module as described above, wherein the backlight module is used to carry the liquid crystal panel and provide a backlight source for the liquid crystal panel.
[0024] The beneficial effects of the utility model are:
[0025] The utility model provides a backlight module. By dividing a glue frame into a first glue frame and a second glue frame arranged up and down, and arranging a first elastic member between the first glue frame and the second glue frame, when the glass is subjected to force, the first glue frame can have a displacement amount that can move toward a back plate through the first elastic member, that is, when the dynamic and static pressure tests and hinge durability tests are performed on the backlight module, when the glass is subjected to force, the first glue frame can move toward the back plate through the first elastic member, so that the entire glue frame can share the pressure of the test, avoiding excessive local deformation of the glass, resulting in damage to its internal structure or even breakage, thereby improving the yield rate of the backlight module; in addition, when the glass is not subjected to force, the first glue frame can also provide a stable bearing force for the glass under the elastic action of the first elastic member.
[0026] The utility model also provides a display device, which can reduce the breakage rate during the test process and increase the load-bearing range during use by applying the backlight module, thereby ensuring the yield rate and use quality of the display device. BRIEF DESCRIPTION OF THE DRAWINGS
[0027] Figure 1 It is a structural schematic diagram of a backlight module provided by the prior art;
[0028] Figure 2 It is a structural schematic diagram of a backlight module provided in Embodiment 1 of the present utility model;
[0029] Figure 3 It is a structural schematic diagram of the first spring sheet structure provided in the first embodiment of the utility model;
[0030] Figure 4 It is a structural schematic diagram of a backlight module provided in the second embodiment of the utility model;
[0031] Figure 5 It is a structural schematic diagram of the backlight module provided in the third embodiment of the present utility model.
[0032] In the figure:
[0033] 100', back panel; 200', plastic frame; 300', glass;
[0034] 100, back panel; 101, storage space;
[0035] 200, plastic frame; 210, first plastic frame; 220, second plastic frame;
[0036] 300, glass;
[0037] 410, first elastic member; 411, first spring sheet; 412, second spring sheet; 413, third spring sheet; 420, second elastic member. DETAILED DESCRIPTION
[0038] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.
[0039] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0040] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.
[0041] In the description of this embodiment, the terms "upper", "lower", "left", "right" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.
[0042] Embodiment 1
[0043] Figure 2 FIG. 2 shows a schematic diagram of the structure of the backlight module provided in this embodiment. Figure 2As shown, this embodiment provides a backlight module, which includes a back panel 100, a plastic frame 200, a glass 300 and a buffer structure. A accommodating space 101 is set in the back panel 100; the plastic frame 200 is set in the accommodating space 101, and the plastic frame 200 includes a first plastic frame 210 and a second plastic frame 220, and the first plastic frame 210 is located above the second plastic frame 220; the glass 300 is supported on the first plastic frame 210; the buffer structure includes a first elastic member 410 arranged between the first plastic frame 210 and the second plastic frame 220.
[0044] The backlight module provided in the present embodiment is configured by splitting the glue frame 200 into a first glue frame 210 and a second glue frame 220 arranged vertically, and arranging a first elastic member 410 between the first glue frame 210 and the second glue frame 220, so that when the glass 300 is subjected to force, the first glue frame 210 can have a displacement amount that can move toward the back plate 100 through the first elastic member 410, that is, when the dynamic and static pressure tests and hinge durability tests are performed on the backlight module, if the glass 300 is subjected to force, the first glue frame 210 can move toward the back plate 100 through the first elastic member 410, so that the entire glue frame 200 can share the pressure of the test, avoiding excessive local deformation of the glass 300, resulting in damage to its internal structure or even breakage, thereby improving the yield rate of the backlight module; in addition, when the glass 300 is not subjected to force, the first glue frame 210 can also provide a stable bearing force for the glass 300 under the elastic action of the first elastic member 410.
[0045] Optionally, the first elastic member 410 is adhered to the first rubber frame 210, which is convenient for assembly and has a better fixing effect. Of course, in other embodiments, the first elastic member 410 can also be connected to the first rubber frame 210 by other connection methods such as screw connection and clamp connection. Optionally, the first elastic member 410 is adhered to the second rubber frame 220, which is convenient for assembly and has a better fixing effect. Of course, in other embodiments, the first elastic member 410 can also be connected to the second rubber frame 220 by other connection methods such as screw connection and clamp connection.
[0046] In one example, the first elastic member 410 is a spring, which has a large elastic force, a good buffering effect, and is easy to obtain, which can reduce the processing cost of the backlight module. This example does not limit the type of spring. For example, the first elastic member 410 can be a coil spring, a disc spring, a disk spring, or a diaphragm spring.
[0047] In the second example, the first elastic member 410 is foam, which has good elastic effect, large elastic recovery force, is light and easy to process, has low cost and long service life.
[0048] In the third example, the first elastic member 410 is a first elastic sheet structure. Figure 3FIG. 4 shows a schematic diagram of the structure of the first elastic sheet structure provided in this embodiment. Figure 3 Combined with Figure 2 As shown, the first spring sheet structure includes a first spring sheet 411, a second spring sheet 412 and a third spring sheet 413 connected in sequence, the first spring sheet 411 and the third spring sheet 413 are arranged in parallel and spaced apart, and are respectively connected to the first plastic frame 210 and the second plastic frame 220, the two ends of the second spring sheet 412 are respectively connected to the first spring sheet 411 and the third spring sheet 413, and the second spring sheet 412 is arranged at an angle with the first spring sheet 411, and the second spring sheet 412 is arranged at an angle with the third spring sheet 413. When the glass 300 is subjected to force, a buffering effect can be provided by the change of the angle between the second spring sheet 412 and the first spring sheet 411 and / or between the second spring sheet 412 and the third spring sheet 413. Optionally, the first spring sheet structure can be made of plastic material or metal material.
[0049] When the first elastic member 410 is a spring, foam or a first spring sheet structure, the number of the first elastic members 410 can be set to multiple, and the multiple first elastic members 410 are distributed at intervals along the circumference of the first rubber frame 210. This design can further improve the buffering effect of the first rubber frame 210 to increase the force range of the display device and ensure the quality of use of the display device.
[0050] In the fourth example, the first elastic member 410 may be a spring and a foam alternately arranged along the circumference of the first rubber frame 210, and the two work together to provide a buffering effect on the first rubber frame 210. It should be noted that this example does not limit the distribution of the springs and the foam, and it may adopt a method of arranging n1 foams between two adjacent springs, or a method of arranging n2 springs between two adjacent foams, wherein n1≥1, n2≥1, and n1 and n2 are both integers.
[0051] In the fifth example, the first elastic member 410 may be a spring and a first elastic sheet structure alternately arranged along the circumference of the first rubber frame 210, and the two work together to buffer the first rubber frame 210. It should be noted that this example does not limit the distribution of the spring and the first elastic sheet structure, and it may adopt a method of arranging n3 first elastic sheet structures between two adjacent springs, or a method of arranging n4 springs between two adjacent first elastic sheet structures, wherein n3≥1, n4≥1, and n3 and n4 are both integers.
[0052] In the sixth example, the first elastic member 410 may be a foam and a first elastic sheet structure alternately arranged along the circumference of the first rubber frame 210, and the two work together to provide a buffering effect on the first rubber frame 210. It should be noted that this example does not limit the distribution of the foam and the first elastic sheet structure, and it may adopt a method of arranging n5 first elastic sheet structures between two adjacent foams, or a method of arranging n6 foams between two adjacent first elastic sheet structures, wherein n5≥1, n6≥1, and n5 and n6 are both integers.
[0053] In the seventh example, the first elastic member 410 may be a spring, foam and first elastic sheet structure alternately arranged along the circumference of the first rubber frame 210, and the three work together to provide a buffering effect on the first rubber frame 210. It should be noted that this example does not limit the number and distribution of the spring, foam and first elastic sheet structure, and the designer can adjust the distribution of the spring, foam and first elastic sheet structure according to actual needs.
[0054] In order to improve the stability of the first rubber frame 210 and the second rubber frame 220, in the present embodiment, the rubber frame 200 further includes a telescopic connector (not shown in the figure), and the first rubber frame 210 and the second rubber frame 220 are connected with the telescopic connector. Specifically, the telescopic connector includes a connecting sleeve and a connecting column slidably disposed in the connecting sleeve, and the end of the connecting sleeve away from the connecting column is connected to the first rubber frame 210, and the end of the connecting column away from the connecting sleeve is connected to the second rubber frame 220. When the glass 300 is subjected to force, when the first rubber frame 210 moves toward the direction of the back plate 100 through the first elastic member, the connecting column can slide relative to the connecting sleeve. By setting the telescopic connector, the stability of the first rubber frame 210 when it moves relative to the second rubber frame 220 can be ensured, and the two can be prevented from being misaligned in the horizontal direction.
[0055] In this embodiment, the glass 300 is bonded to the first adhesive frame 210 by adhesive, which facilitates assembly and provides a stable connection.
[0056] Embodiment 2
[0057] This embodiment provides a backlight module, the structure of which is substantially the same as that of the backlight module in the first embodiment, except that the specific structure of the buffer structure is different.
[0058] Figure 4 FIG. 2 shows a schematic diagram of the structure of the backlight module provided in this embodiment. Figure 4As shown, in this embodiment, the buffer structure further includes a second elastic member 420, and the second elastic member 420 is disposed between the second rubber frame 220 and the back plate 100. By arranging the second elastic member 420 between the second rubber frame 220 and the back plate 100, when the backlight module is subjected to a dynamic and static pressure test and a hinge durability test, if the glass 300 is subjected to force, the first rubber frame 210 can move toward the back plate 100 through the first elastic member 410, and the second rubber frame 220 can move toward the back plate 100 through the second elastic member 420, so that the entire rubber frame 200 shares the pressure of the test, further increasing the load-bearing range of the backlight module and improving the use quality of the backlight module.
[0059] Optionally, one end of the second elastic member 420 is adhered to the back plate 100, which is convenient for assembly and has a better fixing effect. Of course, in other embodiments, one end of the second elastic member 420 can also be connected to the back plate 100 by other connection methods such as screw connection and clamping. Optionally, the other end of the second elastic member 420 is adhered to the second rubber frame 220, which is convenient for assembly and has a better fixing effect. Of course, in other embodiments, the other end of the first elastic member 410 can also be connected to the second rubber frame 220 by other connection methods such as screw connection and clamping.
[0060] It can be understood that the structure and material of the second elastic member 420 are the same as those of the first elastic member 410 , and the structure and material of the second elastic member 420 are not described in detail in this embodiment.
[0061] Embodiment 3
[0062] This embodiment provides a backlight module, the structure of which is substantially the same as that of the backlight module in the second embodiment, except that the connection method between the second elastic member 420 and the back plate 100 is different.
[0063] Figure 5 FIG. 2 shows a schematic diagram of the structure of the backlight module provided in this embodiment. Figure 5 As shown, in this embodiment, the second elastic member 420 is a second elastic sheet structure integrally formed on the back plate 100. Specifically, the back plate 100 includes a bottom plate and a side plate surrounding the bottom plate, the bottom plate includes a first plate body and a second plate body, one end of the second plate body is connected to the first plate body, and the other end is bent toward the inside of the accommodating space 101, thereby forming the second elastic member 420. This design is not only convenient for processing and saves materials, but also can improve the heat dissipation effect of the backlight module due to the hollow setting of the bottom plate.
[0064] Optionally, the thickness of the second elastic member 420 is 0.15 mm to 0.35 mm. This thickness design can not only ensure the use strength of the back plate 100, but also ensure that the second elastic member 420 has a good elastic effect.
[0065] Optionally, there are multiple second elastic members 420 , which are spaced apart along the circumference of the second plastic frame 220 to improve their stability bearing on the second plastic frame 220 and ensure the stability of the second plastic frame 220 in the up and down movement.
[0066] Embodiment 4
[0067] This embodiment provides a display device, which includes a liquid crystal panel and a backlight module, wherein the backlight module is used to carry the liquid crystal panel and provide a backlight source for the liquid crystal panel. The backlight module can adopt any one of the backlight modules in the above embodiments, and by using the above backlight module, the breakage rate during the test process can be reduced, and the load-bearing range during use can be increased, thereby ensuring the yield rate and use quality of the display device.
[0068] The above embodiments are only to illustrate the basic principles and characteristics of the present invention. The present invention is not limited by the above embodiments. Without departing from the spirit and scope of the present invention, the present invention may be subject to various changes and modifications, which are within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.
Claims
1. A backlight module, characterized in that: include: A back plate (100) having a receiving space (101) disposed therein; A plastic frame (200) is arranged in the accommodating space (101), the plastic frame (200) comprising a first plastic frame (210) and a second plastic frame (220), the first plastic frame (210) being located above the second plastic frame (220); Glass (300), supported on the first plastic frame (210); The buffer structure comprises a first elastic member (410) arranged between the first rubber frame (210) and the second rubber frame (220).
2. The backlight module according to claim 1, characterized in that: The first elastic member (410) is adhered to the first plastic frame (210); and / or the first elastic member (410) is adhered to the second plastic frame (220).
3. The backlight module according to claim 1, characterized in that: There are a plurality of the first elastic members (410), and the plurality of the first elastic members (410) are distributed at intervals along the circumference of the first rubber frame (210).
4. The backlight module according to claim 1, characterized in that: The first elastic member (410) comprises one of a spring, a foam and a first elastic sheet structure.
5. The backlight module according to claim 1, characterized in that: The first elastic member (410) comprises springs and foams alternately arranged along the circumference of the first rubber frame (210); or The first elastic member (410) comprises a spring and a first elastic sheet structure alternately arranged along the circumference of the first rubber frame (210); or The first elastic member (410) comprises foam and a first elastic sheet structure alternately arranged along the circumference of the first rubber frame (210); or The first elastic member (410) comprises a spring, foam and a first elastic sheet structure which are alternately arranged along the circumference of the first rubber frame (210).
6. The backlight module according to claim 1, characterized in that: The plastic frame (200) further comprises a telescopic connecting member, and the telescopic connecting member is connected between the first plastic frame (210) and the second plastic frame (220).
7. The backlight module according to any one of claims 1 to 6, characterized in that: The buffer structure further comprises a second elastic member (420), wherein the second elastic member (420) is arranged between the second rubber frame (220) and the back plate (100).
8. The backlight module according to claim 7, characterized in that: The second elastic member (420) is a second elastic sheet structure integrally formed on the back plate (100).
9. The backlight module according to claim 8, characterized in that: The thickness of the second elastic member (420) is 0.15 mm to 0.35 mm.
10. A display device, characterized in that: It comprises a liquid crystal panel and a backlight module as described in any one of claims 1 to 9, wherein the backlight module is used for carrying the liquid crystal panel and providing a backlight source for the liquid crystal panel.