Backlight casting structure for reducing foreign matter movement
By attaching a PI film to the bottom wall of the backlight casting and using a uniform bonding element, the problem of foreign object movement during the backlight casting manufacturing process was solved, thereby improving the backlight lighting effect and protecting the film.
Patent Information
- Application Number
- CN202423305908.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-31
- Publication Date
- 2025-12-16
- Estimated Expiration
- 2034-12-31
AI Technical Summary
Metal shavings and film powder foreign objects generated during the manufacturing process of backlight castings can easily move into the backlight film, affecting the backlight lighting effect.
A PI film is attached to the bottom wall of the backlit casting body. Through the cooperation of evenly applied elements such as left and right evenly pressed foam blocks and rigid diaphragms, the PI film is ensured to be tightly attached to the bottom wall of the casting body, covering foreign objects and reducing their movement.
It effectively reduces the entry of foreign objects into the backlight film, improves the backlight illumination effect, and protects the PI film from damage caused by rigid contact.
Smart Images
Figure CN223679486U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to backlight technical field especially relates to a backlight casting structure for reducing foreign matter movement. BACKGROUND
[0002] Backlight is a form of illumination in the electronics industry, often used in LCD displays. Backlighting differs from front lighting in that it is illuminated from the side or back, while front lighting, as the name suggests, is illuminated from the front. They are used to increase the brightness in low light environments and the brightness of computer monitors, LCD screens, and to produce light in a similar way to CRT displays.
[0003] The common materials of the backlight casting are magnesium alloy and aluminum alloy, and the process flow of the backlight casting is: die casting, rough punching, hot pressing, CNC, deburring, polishing and passivation. The CNC, deburring and polishing posts will produce metal debris, and it is impossible to completely remove the metal debris. After passivation, a film is formed on the surface of the casting, and a small amount of powder foreign matter will be generated in the subsequent process. The above two kinds of foreign matter will move into the backlight film in the backlight module, which will cause the backlight to light up and affect the actual lighting effect of the backlight. Therefore, a backlight casting structure for improving the lighting effect of the backlight is provided. CONTENT OF THE UTILITY MODEL
[0004] Therefore, it is necessary to provide a backlight casting structure for reducing foreign matter movement by attaching a PI film to the bottom wall of the backlight casting body to hinder the movement of foreign matter on the bottom wall.
[0005] In order to solve the above technical problems, the utility model adopts the following technical scheme:
[0006] A backlight casting structure for reducing foreign matter movement, comprising a casting body, the casting body is composed of an inner casting body and an outer casting body, a PI film body is attached to the bottom wall of the inner casting body, the outer side of the PI film body is close to the side wall of the inner casting body, and the PI film body can cover the foreign matter on the bottom wall of the inner casting body.
[0007] The top of the PI film body is further provided with a uniform attachment element.
[0008] Further, the top of the PI film body is provided with a hard film, and the hard film on the top of the PI film body is used to connect the uniform attachment element.
[0009] Further, the top and bottom of the hard film are respectively provided with an upper adhesive surface and a lower adhesive surface.
[0010] The upper adhesive surface and the lower adhesive surface both have adhesion, and the hard film is attached to the surface of the PI film body through the lower adhesive surface.
[0011] Further, the hard diaphragm is in a frame type, and the frame type hard diaphragm is attached to the edge of the PI film body.
[0012] Further, the uniform attachment element comprises a left uniform pressure foam block and a right uniform pressure foam block.
[0013] The left uniform pressure foam block and the right uniform pressure foam block are combined and adapted to the size of the bottom wall of the casting inner body.
[0014] Further, the right uniform pressure foam block extends a connecting portion towards the left uniform pressure foam block, and the left uniform pressure foam block has a clamping portion corresponding to the position of the connecting portion.
[0015] The left uniform pressure foam block and the right uniform pressure foam block are assembled by inserting the connecting portion into the clamping portion, and the assembled left uniform pressure foam block and the right uniform pressure foam block are attached to the upper attachment surface of the top of the hard diaphragm.
[0016] Further, the top of the left uniform pressure foam block and the right uniform pressure foam block is attached with a first double-sided adhesive and a second double-sided adhesive respectively, and the first double-sided adhesive and the second double-sided adhesive located at the periphery avoid the corresponding clamping portion and the connecting portion.
[0017] Further, the uniform attachment element further comprises a uniform pressing plate, and the uniform pressing plate is attached to the left uniform pressure foam block and the right uniform pressure foam block through the first double-sided adhesive and the second double-sided adhesive.
[0018] Further, the uniform pressing plate is larger than the combined left uniform pressure foam block and right uniform pressure foam block, and the thickness of the left uniform pressure foam block and the right uniform pressure foam block is greater than the depth of the casting inner body.
[0019] Further, a fold line groove is formed at the center of the uniform pressing plate, and the two sides of the uniform pressing plate can be flipped and folded along the fold line groove.
[0020] Compared with the prior art, the utility model has the following beneficial effects:
[0021] The utility model discloses a backlight casting structure for reducing the movement of foreign matters, which realizes the coverage of foreign matters and reduces the movement of foreign matters by attaching the PI film body to the bottom wall of the conventional backlight casting inner body to cover most of the effective area of the bottom wall of the casting body, thereby reducing the problem that the foreign matters falling into the backlight diaphragm affect the backlight lighting due to the movement of the foreign matters.
[0022] The cooperation of the left uniform pressure foam block, the right uniform pressure foam block and the hard diaphragm can make the PI film body fully adhere to the bottom wall of the casting body after the PI film body is adhered by pressing the left uniform pressure foam block and the right uniform pressure foam block, and the left uniform pressure foam block and the right uniform pressure foam block have elasticity, so that the PI film body is not rigidly resisted when being pressed, and the PI film body is protected.
[0023] The uniform pressure plate is manually pressed from outside, the pressure is further transmitted to the PI film body through the left uniform pressure foam block and the right uniform pressure foam block, the hand of the operator is facilitated to exert force, and the left uniform pressure foam block and the right uniform pressure foam block are uniformly distributed, and the PI film body is more facilitated to be adhered. BRIEF DESCRIPTION OF DRAWINGS
[0024] Figure 1 A structure diagram of the backlight casting structure for reducing movement of foreign matters is provided.
[0025] Figure 2 A casting body structure diagram of the backlight casting structure for reducing movement of foreign matters is provided.
[0026] Figure 3 A PI film body structure diagram of the backlight casting structure for reducing movement of foreign matters is provided.
[0027] Figure 4 A uniform adhering element structure diagram of the backlight casting structure for reducing movement of foreign matters is provided.
[0028] Figure 5 A uniform adhering element structure diagram of the backlight casting structure for reducing movement of foreign matters is provided.
[0029] Figure 6 A hard diaphragm structure diagram of the backlight casting structure for reducing movement of foreign matters is provided.
[0030] Figure 7 A split structure diagram of the backlight casting structure for reducing movement of foreign matters is provided.
[0031] Figure 8 A left uniform pressure foam block and a right uniform pressure foam block assembly structure diagram of the backlight casting structure for reducing movement of foreign matters is provided.
[0032] The mark in the drawing is explained as follows:
[0033] Casting body 1, casting inner body 11, casting outer body 12;
[0034] PI membrane 2;
[0035] 3. Evenly applied component, 31. Left evenly pressed foam block, 32. Right evenly pressed foam block, 33. Connecting part, 34. Insertion part, 35. First double-sided adhesive, 36. Second double-sided adhesive, 37. Evenly pressed plate;
[0036] 370mm zigzag groove;
[0037] Rigid film 4, upper adhesive surface 41, lower adhesive surface 42. Detailed Implementation
[0038] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.
[0039] As described in the background section, foreign objects can easily move into the backlight film within the backlight module, causing the backlight to illuminate the foreign object and affecting the actual lighting effect of the backlight.
[0040] To solve this technical problem, this utility model provides a backlight casting structure for reducing the movement of foreign objects, which is applied to backlights.
[0041] For details, please refer to Figures 1-8 The backlight casting structure for reducing foreign object movement specifically includes a casting body 1, which is composed of an inner casting body 11 and an outer casting body 12. A PI film 2 is attached to the bottom wall of the inner casting body 11, and the outer side of the PI film 2 is close to the side wall of the inner casting body 11. The PI film 2 can cover foreign objects on the bottom wall of the inner casting body 11.
[0042] The top of the PI film 2 is also provided with a uniform bonding element 3.
[0043] This utility model provides a backlight casting structure for reducing the movement of foreign objects. By attaching a PI film 2 to the bottom wall of the inner body 11 of a conventional backlight casting, the film covers most of the effective area of the bottom wall of the casting body 1, thereby covering foreign objects and reducing their movement. This helps to reduce the problem of foreign objects falling into the backlight film and affecting the backlight illumination.
[0044] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.
[0045] It should be noted that the embodiments in the utility model and the features and technical solutions in the embodiments can be combined with each other without conflict.
[0046] It should be noted that: similar labels and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.
[0047] Embodiment one
[0048] Please refer to Figures 1-8 A backlight casting structure for reducing the movement of foreign matter, comprising a casting body 1, the casting body 1 is jointly constituted by a casting inner body 11 and a casting outer body 12, the bottom wall of the casting inner body 11 is attached with a PI film body 2, the outer side of the PI film body 2 is close to the side wall of the casting inner body 11, and the PI film body 2 can cover the foreign matter on the bottom wall of the casting inner body 11, wherein the top of the PI film body 2 is also provided with a uniform pasting element 3.
[0049] The top of the PI film body 2 is provided with a hard film sheet 4, and the hard film sheet 4 arranged on the top of the PI film body 2 is used to connect the uniform pasting element 3.
[0050] The top and bottom of the hard film sheet 4 are respectively provided with an upper adhesive surface 41 and a lower adhesive surface 42, wherein the upper adhesive surface 41 and the lower adhesive surface 42 are both adhesive, and the hard film sheet 4 is pasted to the surface of the PI film body 2 through the lower adhesive surface 42.
[0051] The hard film sheet 4 is in a frame type, and the frame type hard film sheet 4 is pasted to the edge of the PI film body 2.
[0052] Through the design of the hard film sheet 4, the PI film body 2 can be pasted and connected at the four corners, so that the flatness of the overall PI film body 2 in the overall pasting process can be improved, and the difficulty of pasting alignment and the pasting skew caused by the too soft PI film body 2 can be avoided.
[0053] Specifically, the PI film body 2 is pasted to the bottom wall of the casting inner body 11, and the design of the PI film body 2 can cover the bottom wall of the casting inner body 11, thereby reducing the movement of foreign matter inside, which is conducive to reducing the problem that foreign matter moves and falls into the backlight film and affects the backlight lighting.
[0054] Embodiment two
[0055] The backlight casting structure for reducing the movement of foreign matter provided by embodiment one is further optimized, specifically, as Figure 7As shown, the uniform pasting element 3 comprises a left uniform pressing foam block 31 and a right uniform pressing foam block 32, wherein the left uniform pressing foam block 31 and the right uniform pressing foam block 32 are combined to be suitable for the bottom wall of the inner casting body 11;
[0056] The right uniform pressing foam block 32 extends in the direction of the left uniform pressing foam block 31 and has a connecting part 33, and the left uniform pressing foam block 31 has a clamping part 34 corresponding to the position of the connecting part 33;
[0057] The left uniform pressing foam block 31 and the right uniform pressing foam block 32 are assembled by placing the connecting part 33 into the clamping part 34, and the assembled left uniform pressing foam block 31 and the right uniform pressing foam block 32 are both connected with the upper pasting surface 41 of the top of the hard film 4;
[0058] Through the cooperation of the connecting part 33 and the clamping part 34, the connecting part 33 can be placed into the corresponding clamping part 34 to realize the assembly of the left uniform pressing foam block 31 and the right uniform pressing foam block 32. The assembled left uniform pressing foam block 31 and the right uniform pressing foam block 32 are connected with the hard film 4 below through the upper pasting surface 41. Thus, after the PI film body 2 is attached, the left uniform pressing foam block 31 and the right uniform pressing foam block 32 can be pressed, and the pressing force can further ensure the integrity of the attachment of the PI film body 2 to the bottom wall of the inner casting body 11;
[0059] At the same time, since the left uniform pressing foam block 31 and the right uniform pressing foam block 32 have a certain softness, they will not produce rigid resistance with the PI film body 2 during pressing, which is conducive to the protection of the PI film body 2 during attachment.
[0060] Example Three
[0061] The backlight casting structure for reducing the movement of foreign matters provided in Example One or Two is further optimized, as shown in Figure 7 As shown, the top of the left uniform pressing foam block 31 and the right uniform pressing foam block 32 is respectively pasted with a first double-sided adhesive 35 and a second double-sided adhesive 36, and the first double-sided adhesive 35 and the second double-sided adhesive 36 located at the periphery avoid the corresponding clamping part 34 and the connecting part 33;
[0062] The uniform pasting element 3 further comprises a uniform pressing plate 37, which is connected with the left uniform pressing foam block 31 and the right uniform pressing foam block 32 through the first double-sided adhesive 35 and the second double-sided adhesive 36;
[0063] As shown in Figure 4As shown, after the attachment, the uniform pressing plate 37 is located outside the casting body 1, and since the uniform pressing plate 37 is a hard structure, the surface of the uniform pressing plate 37 can be pressed downward, and the pressing force can be uniformly dispersed through the left uniform pressing foam block 31 and the right uniform pressing foam block 32, thereby promoting the overall attachment of the PI film body 1.
[0064] Embodiment Four
[0065] The backlight casting structure for reducing the movement of foreign matters provided in Embodiment Three is further optimized, as shown in Figure 4 As shown, the uniform pressing plate 37 is larger than the combined left uniform pressing foam block 31 and right uniform pressing foam block 32, and the thickness of the left uniform pressing foam block 31 and right uniform pressing foam block 32 is greater than the depth of the casting inner body 11.
[0066] The center of the uniform pressing plate 37 is formed with a fold line groove 370, and the two sides of the uniform pressing plate 37 can be flipped and folded along the fold line groove 370. Through the design of the fold line groove 370, after the PI film body 2 is attached and pressed, the two sides of the uniform pressing plate 37 are flipped, which is separated from the lower first double-sided adhesive 35, and is beneficial for orderly taking out, only the PI film body 2 is reserved.
[0067] The use process of the backlight casting structure for reducing the movement of foreign matters provided by the utility model is as follows: the left uniform pressing foam block 31 and right uniform pressing foam block 32 on the uniform pressing plate 37 are aligned with the bottom wall of the casting body 1, and are placed in it, at this time, the hard film sheet 4 on the left uniform pressing foam block 31 and right uniform pressing foam block 32 and the PI film body 2 thereon are also placed synchronously, so that the PI film body 2 is attached to the bottom wall of the casting body 1, at this time, the uniform pressing plate 37 is pressed from the outside, the uniform pressing plate 37 under the action of pressure transmits the pressure to the left uniform pressing foam block 31 and right uniform pressing foam block 32, and finally transmits the pressure to the PI film body 2, so that the PI film body 2 is better attached to the bottom wall of the casting body 1, then the uniform pressing plate 37 on the two sides is flipped, so that it is separated from the surface of the left uniform pressing foam block 31 and right uniform pressing foam block 32, and is taken out, then the left uniform pressing foam block 31 and right uniform pressing foam block 32 are buckled through the connecting column 33 and the clamping part 34, and finally the hard film sheet 4 is taken out, only the PI film body 2 is reserved to cover the foreign matters on the bottom wall of the casting body 1.
[0068] In the utility model, unless another definite provision and limitation, the terms "mount", "link", "connect", "fix" and so on terms should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or be integrated;Can be mechanical connection, also can be electric connection or each other can communicate;Can be direct connection, also can indirectly connect through intermediate medium, can be two element internal communication or two element mutual action relation, unless another definite limitation.For ordinary skilled person in the art, can understand the concrete meaning of above-mentioned terms in the utility model according to specific circumstances.
[0069] Obviously, the above-described embodiments are only a part of the embodiments of the utility model, and not all the embodiments, and the preferred embodiments of the utility model are given in the drawings, but do not limit the patent range of the utility model.The utility model can be realized in many different forms, and contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the utility model more thorough and comprehensive.Although the utility model is described in detail with reference to the foregoing embodiments, for those skilled in the art, the technical scheme recorded in the foregoing each specific embodiment can be modified, or part of the technical features can be replaced equivalently.For equivalent structure made by using the contents of the utility model specification and drawings, direct or indirect use in other related technical fields, are also within the patent protection range of the utility model.
Claims
1. A back light casting structure for reducing foreign matter movement, comprising a casting body (1) which is composed of a casting inner body (11) and a casting outer body (12), characterized in that, The bottom wall of the casting inner body (11) is attached with a PI film body (2), and the outer side of the PI film body (2) is close to the side wall of the casting inner body (11), and the PI film body (2) can cover the foreign matter on the bottom wall of the casting inner body (11); The top of the PI film body (2) is further provided with a uniform attachment element (3).
2. A backlit casting structure for reducing foreign object movement according to claim 1, wherein, The top of the PI film body (2) is provided with a hard diaphragm (4), and the hard diaphragm (4) provided on the top of the PI film body (2) is used to connect the uniform attachment element (3).
3. A backlit casting structure for reducing foreign object movement according to claim 2, wherein, The top and bottom of the hard diaphragm (4) have an upper adhesive surface (41) and a lower adhesive surface (42), respectively. The upper adhesive surface (41) and the lower adhesive surface (42) are both adhesive, and the hard diaphragm (4) is attached to the surface of the PI film body (2) through the lower adhesive surface (42).
4. A backlit casting structure for reducing foreign object movement according to claim 2, wherein, The hard diaphragm (4) is in a frame shape, and the frame-shaped hard diaphragm (4) is attached to the edge of the PI film body (2).
5. A backlit casting structure for reducing foreign object movement according to claim 3, wherein, The uniform attachment element (3) includes a left uniform pressure foam block (31) and a right uniform pressure foam block (32). The left uniform pressure foam block (31) and the right uniform pressure foam block (32) are combined to match the size of the bottom wall of the casting inner body (11).
6. A backlit casting structure for reducing foreign object movement according to claim 5, wherein, The right uniform pressure foam block (32) extends in the direction of the left uniform pressure foam block (31) and has a connecting portion (33), and the left uniform pressure foam block (31) has a clamping portion (34) corresponding to the position of the connecting portion (33). The left uniform pressure foam block (31) and the right uniform pressure foam block (32) are assembled by inserting the connecting portion (33) into the clamping portion (34), and the assembled left uniform pressure foam block (31) and the right uniform pressure foam block (32) are both attached to the upper adhesive surface (41) of the top of the hard diaphragm (4).
7. A backlit casting structure for reducing foreign object movement as defined in claim 5, wherein, The top of the left uniform pressure foam block (31) and the right uniform pressure foam block (32) is respectively attached with a first double-sided adhesive (35) and a second double-sided adhesive (36), and the first double-sided adhesive (35) and the second double-sided adhesive (36) located at the periphery avoid the corresponding clamping portion (34) and the connecting portion (33).
8. A backlit casting structure for reducing foreign object movement according to claim 7, wherein, The uniform attachment element (3) further includes a uniform pressure plate (37), and the uniform pressure plate (37) is attached to the left uniform pressure foam block (31) and the right uniform pressure foam block (32) through the first double-sided adhesive (35) and the second double-sided adhesive (36).
9. A backlit casting structure for reducing foreign object movement according to claim 8, wherein, The uniform pressure plate (37) is larger than the combined left uniform pressure foam block (31) and right uniform pressure foam block (32), and the thickness of the left uniform pressure foam block (31) and the right uniform pressure foam block (32) is greater than the depth of the casting inner body (11).
10. A backlit casting structure for reducing foreign object movement according to claim 8, wherein, A fold line groove (370) is formed at the center of the uniform pressure plate (37), and the two sides of the uniform pressure plate (37) can be flipped and folded along the fold line groove (370).