Aluminum plate attached high heat dissipation liquid crystal display back plate

Abstract

This invention discloses an aluminum plate-bonded high-heat-dissipation liquid crystal display back panel, including a frame. A substrate is embedded in a groove on the back side of the frame. An aluminum sheet structure is fixedly connected to the center of the front side of the substrate. A display panel is bonded to the front side of the aluminum sheet structure, and the display panel is fitted into the groove on the front side of the frame. A gap channel is formed between the aluminum sheet structure, the frame, the substrate, and the display panel. An adapter plate is connected to the back side of the substrate. Electronic and optical components are fixedly connected to the back side of the adapter plate. Several adjustment components are distributed on the adapter plate to adjust the unevenness of the top contact points on the substrate. The aluminum sheet structure constitutes a desensitization transfer layer between the substrate and the display panel. This invention achieves high load-bearing capacity and lightweight design of the liquid crystal display panel back panel, obtains high heat dissipation performance, and ensures simple flatness adjustment operation.

Description

Technical Field

[0001] This invention relates to the field of liquid crystal display backplate technology, and in particular to aluminum plate laminated high heat dissipation liquid crystal display backplate. Background Technology

[0002] The LCD panel is an important structural component of LCD TVs. Its back panel mainly serves to support the display panel and fix electronic and optical components. It is usually made of metal or plastic. Among them, aluminum, as a metal with excellent thermal conductivity, is theoretically the preferred material for the back panel. However, considering the requirements of lightweighting, the back panel structure needs to be processed to be thin. This makes the thin aluminum back panel have low load-bearing capacity of the display panel and difficult to adjust the flatness. Summary of the Invention

[0003] Purpose of the invention: In order to overcome the shortcomings of the prior art, the present invention provides an aluminum plate bonded to a high heat dissipation liquid crystal display back panel, which achieves high load-bearing capacity and lightweight of the liquid crystal display panel back panel, obtains high heat dissipation performance, and ensures simple flatness adjustment operation.

[0004] Technical solution: To achieve the above objective, the present invention provides an aluminum plate bonded high heat dissipation liquid crystal display back panel, including a frame, a substrate is embedded in the back groove of the frame, an aluminum sheet structure is fixedly connected to the center of the front side of the substrate, a display panel is bonded to the front side of the aluminum sheet structure, and the edge of the display panel is fitted into the front groove of the frame.

[0005] A gap channel is formed between the aluminum sheet structure and the frame, substrate and display panel;

[0006] The back side of the substrate is connected to an adapter plate, and electronic and optical components are fixedly connected to the back side of the adapter plate. Several adjustment components are distributed on the adapter plate to adjust the unevenness of the top contact point on the substrate.

[0007] Furthermore, the aluminum sheet structure constitutes a desensitization transfer layer between the substrate and the display panel.

[0008] Furthermore, the frame includes an outer frame and a limiting inner frame. The front and rear ends of the limiting inner frame form front and rear grooves with the inner ring surface of the outer frame, respectively. The two sides and the upper edge of the substrate are bonded to the rear end face of the limiting inner frame through flexible pads. The ring edge of the display panel is bonded to the front end face of the limiting inner frame through the flexible pads.

[0009] Furthermore, the adapter plate includes several bonding areas, which are bonded to the back side of the substrate. The bonding areas are fixedly connected to the substrate through multiple threaded mating points; the multiple threaded mating points are arranged in a rectangular array.

[0010] Furthermore, the lower edge of the adapter plate is fixedly connected to the lower frame of the limiting inner frame, and the adapter plate and the limiting inner frame clamp and fix the lower edge of the substrate.

[0011] Furthermore, the area of ​​the adapter plate other than the bonding area is a raised area, which includes a mesh-like ridge structure and a number of boss structures. The bonding area is located within the mesh of the mesh-like ridge structure, and the boss structures are distributed in the bonding area.

[0012] Furthermore, the raised area is provided with a number of high protrusions, and the electronic and optical components are fixedly installed in contact with the end face of the high protrusions, so that a gap is formed between the electronic and optical components and the raised area.

[0013] Furthermore, the adjustment assembly includes an adjustment bolt that engages with an adjustment screw hole distributed within the raised area, and the adjustment bolt is perpendicular to the substrate.

[0014] Furthermore, the adjusting screw holes on the mesh-like convex ridge structure are large-sized screw holes, and the large-sized screw holes are distributed on the transverse convex ridges; the adjusting screw holes on the boss structure are small-sized screw holes, and the boss structure with the adjusting screw holes is located at the center of the area surrounded by four adjacent points in the thread mating point array.

[0015] Furthermore, it includes the following steps:

[0016] S1. Adjust the large-size adjustment components layer by layer from bottom to top, with each layer of the large-size adjustment components adjusted sequentially from both sides towards the center;

[0017] S2. Adjust the small-sized adjustment components corresponding to the uneven area. When there are multiple small-sized adjustment components, adjust them layer by layer from the outer ring to the inner ring until the surface is completely flat.

[0018] Beneficial effects: The aluminum plate of the present invention is bonded to the back panel of the high heat dissipation liquid crystal display screen, and the display panel and the substrate are connected by a thin aluminum sheet, forming a large-area heat dissipation channel between them. The high heat dissipation performance of the thin aluminum sheet and its large-area contact with the flowing airflow are used to achieve a highly efficient cooling effect for the display panel. By setting an adjustment component on the back side of the substrate, the unevenness of the substrate plane can be adjusted, thereby indirectly adjusting the flatness of the display panel. The thin aluminum sheet structure forms an adjustable desensitization transfer layer, making the flatness adjustment easier to control and enabling more precise micro-adjustments. Attached Figure Description

[0019] Figure 1 This is a side cross-sectional view of the upper edge structure of the back panel of the liquid crystal display screen of the present invention.

[0020] Figure 2 This is a schematic diagram of the back side structure and adapter plate structure according to an embodiment of the present invention. Detailed Implementation

[0021] The invention will now be further described with reference to the accompanying drawings.

[0022] As attached Figure 1-2 The aluminum plate-bonded high-heat-dissipation LCD back panel includes a frame 1. A substrate 2 is embedded in a groove on the back side of the frame 1. An aluminum sheet structure 3 is fixedly connected to the center of the front side of the substrate 2. A display panel 7 is bonded to the front side of the aluminum sheet structure 3, and the edge of the display panel 7 is fitted into the groove on the front side of the frame 1. An adapter plate 4 is connected to the back side of the substrate 2, and electronic and optical components are fixedly connected to the back side of the adapter plate 4. The frame can be a splicing structure, with any one of its four sides being detachable, thus forming an opening on one side. When assembling the display panel 7, the display panel 7 can be first bonded to the aluminum sheet structure in the center of the substrate, then inserted through the opening, and finally the complete frame is installed. This avoids the panel and aluminum sheet structure being bonded together during the installation process; bonding first ensures the quality of the bond and makes the connection relatively firm. Furthermore, the assembly method can be changed from installation and fitting to insertion installation, which avoids damage to the display panel 7. After installation, the flatness of the display panel 7 can be closer to flatness, making subsequent adjustments easier and faster.

[0023] The main structure of the back panel consists of a frame and a substrate. Aluminum sheet structures and transition plates are added before and after the substrate. Both the aluminum sheet structures and transition plates are aluminum stampings, which enhance the substrate's strength and improve overall load-bearing capacity. The entire structure is made of lightweight aluminum, achieving a lightweight back panel. The aluminum sheet structures and transition plates respectively house the display panel 7 and optoelectronic components, and respectively construct heat dissipation channels between the display panel 7, optoelectronic components, and the main back panel structure. The high heat dissipation performance of the aluminum sheet combined with the high contact area of ​​the air channels achieves high overall heat dissipation performance. Adjustment components are arranged on the back side of the substrate. By adjusting the unevenness of the substrate's surface, the flatness of the display panel 7 is indirectly adjusted, reducing the direct impact on the display back panel. A thin aluminum sheet structure forms an anti-sensitivity transfer layer for adjustment, making flatness adjustment easier to control and enabling more precise micro-adjustments. This comprehensively achieves high load-bearing capacity and lightweight design of the LCD display panel 7 back panel, while obtaining high heat dissipation performance and ensuring easy flatness adjustment operation.

[0024] A gap channel 8 is formed between the aluminum sheet structure 3 and the frame 1, the substrate 2, and the display panel 7. The gap channel 8 includes multiple strip gaps between the aluminum sheet structure and the display panel 7, which are parallel to each other and arranged laterally. It also includes a crisscrossing mesh gap between the aluminum sheet structure and the substrate. The front and rear gaps of the aluminum sheet structure are connected by the annular gaps on its outer ring. Finally, through holes are opened on the substrate and the adapter plate to allow air to flow. The relatively thin aluminum sheet structure can quickly absorb the heat generated by the display panel 7 and also quickly release the absorbed heat. The heat is expelled with the airflow on its front and rear sides, thereby achieving an excellent heat dissipation effect.

[0025] Preferably, the aluminum sheet structure can be formed by stamping aluminum sheet material. A thin aluminum sheet is selected, and multiple long, transverse protrusions are stamped forward on the original flat surface of the aluminum sheet. Between these long protrusions, multiple short, transverse protrusions are stamped in the opposite direction, thus forming parallel gaps and a mesh-like gap at the front and back of the aluminum sheet structure, respectively. This creates a difference in the direction and velocity of gas flow between the front and back sides, making the airflow at the rear side more complex and variable. The relative turbulence between the front and back sides accelerates the transfer of heat through the aluminum sheet, further improving heat dissipation efficiency and enhancing the heat dissipation effect. Furthermore, the strength of the stamped aluminum sheet is increased to a certain extent, enhancing its load-bearing capacity for the actual panel.

[0026] The adapter plate 4 is provided with several adjustment components 5. The movable ends of the adjustment components 5 abut against the back side of the substrate 2 to adjust the unevenness of the abutment points on the substrate 2. Since the substrate and the display panel 7 are connected as a whole, the deformation generated by adjusting the unevenness of each point on the substrate through multiple adjustment components can be transmitted to the display panel 7, thus adjusting the slight flatness differences of the panel. Since the adjustment components act on the back side of the substrate and do not directly act on the display panel 7, damage to the panel structure caused by excessive adjustment is avoided. The substrate can be made of aluminum plate with moderate thickness and a certain degree of flexibility. Through single-point pressure excitation, it can spread from the low abutment point to the edge to form a curved surface structure with a small angle curvature, thereby transmitting forward and pushing the corresponding part of the display panel 7 forward. Through multi-point adjustment, the flatness of the display panel 7 is finally made to meet the requirements.

[0027] The aluminum sheet structure 3 constitutes a desensitization and transfer layer between the substrate 2 and the display panel 7. It can reduce the speed and extent of substrate deformation acting on the display panel 7. Preferably, the top contact point of the adjustment component is set corresponding to the gap channel on the back side of the aluminum sheet. The existence of the gap channel provides some space for small-amplitude deformation of the substrate. When a certain degree of curvature deformation is reached, the aluminum sheet structure body will be pushed forward, thus acting on the back side of the display panel 7. This avoids excessive top pressure during adjustment, preventing over-adjustment and achieving desensitization. It also results in a smaller flatness adjustment amount generated by a longer stroke thrust, making manual adjustment easier to control and enabling more precise flatness adjustment operations.

[0028] The frame 1 includes an outer frame 11 and a limiting inner frame 12. The front and rear ends of the limiting inner frame 12 form front and rear grooves with the inner ring surface of the outer frame 11, respectively. The two sides and the upper edge of the substrate 2 are bonded to the rear end face of the limiting inner frame 12 through flexible pads 6. The annular edge of the display panel 7 is bonded to the front end face of the limiting inner frame 12 through the flexible pads 6. The lower edge of the adapter plate 4 is fixedly connected to the lower frame of the limiting inner frame 12, and the adapter plate 4 and the limiting inner frame 12 clamp and fix the lower edge of the substrate 2.

[0029] The inner frame serves to constrain the relative positions of the substrate and display panel 7 with respect to the frame in the front-back direction. Connected by elastic pads, the connection between the substrate and display panel 7 and the frame maintains a connection while allowing for a certain degree of angular movement. During flatness adjustment, the pads are stretched or compressed in localized areas to achieve self-adaptation and prevent stress concentration. The outer frame of the frame provides greater stability to the assembled back panel structure. Since the frame is a relatively fixed structural component in the assembly with other TV parts, the bottom edge of the adapter plate is directly bolted to the frame, clamping the bottom edge of the substrate. This forces the bottom edges of both the substrate and the adapter plate to be relatively fixed and fixed to the frame structure. Furthermore, by relying on the connection between the substrate and the display panel 7, the lower edge of the display panel 7 is basically fixed in position with the frame. When adjusting the flatness, the lower edge of the display panel 7 is used as a reference point to adjust the other parts of the display panel 7 until they are flush with the surface of the lower edge area. This ensures both the flatness adjustment and the relative positional relationship between the plane of the display panel 7 and the frame after adjustment, thereby achieving the expected flatness requirements.

[0030] The adapter plate 4 includes several mating areas 41, which are mated to the back side of the substrate 2. The mating areas 41 are fixedly connected to the substrate 2 via multiple threaded engagement points 42. Preferably, the multiple threaded engagement points 42 are arranged in a rectangular array. The area of ​​the adapter plate 4 other than the mating areas 41 is a raised area 43, which includes a mesh-like ridge structure and several boss structures. The mating areas 41 are located within the mesh of the mesh-like ridge structure, and the boss structures are dispersed within the mating areas 41.

[0031] The adapter plate can be made of thicker aluminum plate through stamping. On the original flat plate, a mesh-like ridge and boss structure is stamped. The ridges play a role in strengthening the structural strength, thereby further improving the load-bearing capacity of the overall back plate. The unformed protruding areas are attached to the base plate and fixed with multiple bolts. This creates a distributed multi-point connection between the adapter plate and the base plate. The areas between these connection points can be slightly deformed by external force, thereby separating them and creating gaps.

[0032] Preferably, the adjustment component 5 includes an adjustment bolt that engages with adjustment screw holes distributed within the raised area 43. The adjustment bolt is perpendicular to the substrate 2. This structure is easy to manufacture and operate. During adjustment, for the relatively concave area, rotating the adjustment bolt causes its front end to press against the back side of the substrate, pushing it relatively away from the adapter plate. Since the substrate is more flexible than the adapter plate, the area of ​​the substrate being pushed forward slightly deforms, thereby achieving the purpose of adjusting the flatness.

[0033] Preferably, the adjusting screw holes on the mesh-like ridge structure are large-sized screw holes, distributed on the transverse ridges; the adjusting screw holes on the boss structure are small-sized screw holes, and the boss structure with the adjusting screw holes is located at the center of the area surrounded by four adjacent points in the threaded mating point 42 array. The large-sized screw holes, in conjunction with large-sized adjusting bolts, form a large-sized adjusting component 5, and the small-sized screw holes, in conjunction with small-sized adjusting bolts, form a small-sized adjusting component 5. The large-sized adjusting component 5 has a wider coverage area and is used for overall coarse adjustment, while the small-sized adjusting component 5 is used for fine adjustment in localized areas. By placing the large-sized adjusting components 5 at the transverse ridges and equidistantly arranging them on each transverse ridge, the coarse adjustment of the display panel 7 can be divided into multiple layers in the vertical direction, achieving a smoother surface through layer-by-layer adjustment. The small-sized adjusting component 5, located at the center of four adjacent fastening points, defines the adjustment area through these four fastening points, limiting its deformation range and reducing the adjustment amplitude, thus achieving more precise adjustment.

[0034] The raised area 43 is provided with a plurality of high protrusions 44. The electronic and optical components are fixedly mounted against the end faces of the high protrusions 44, thereby creating a gap between the electronic and optical components and the raised area 43. Heat transferred from the display panel 7 can pass through the gap, avoiding impact on the electronic and optical components, while ensuring the heat dissipation effect of both the display panel 7 and the electronic and optical components. The mounting height of different electronic and optical components can be varied, allowing adjacent components to be arranged in layers for better heat dissipation.

[0035] The above-mentioned method for adjusting the flatness of the aluminum plate bonded to the back panel of a high-heat-dissipation LCD display includes the following steps:

[0036] S1. Adjust the large-size adjustment components 5 layer by layer from bottom to top. Each layer of the large-size adjustment components 5 is adjusted sequentially from both sides to the middle. Using the lower edge as a reference, first adjust the flatness of the lowest layer area so that the plane of the lower edge area of ​​the display panel is parallel to the front surface of the frame, or perpendicular to the inner side of the frame. The specific adjustment is determined based on the method of measuring the flatness during adjustment. After determining the flatness of the lower layer, adjust layer by layer upwards, using the adjacent lower layer as a reference, until the overall flatness is roughly parallel to the front surface of the frame, achieving coarse adjustment. Then, by measuring the flatness, find the areas with small flatness errors for fine adjustment.

[0037] S2. Adjust the small adjustment component 5 corresponding to the uneven area. If there is only a single adjustment component in the area, adjust it directly. If there are multiple small adjustment components 5, adjust them layer by layer from the outer ring to the inner ring until it is completely flat.

[0038] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the above principles of the present invention, and these improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. An aluminum plate bonded to a high-heat-dissipation LCD screen back panel, characterized in that: Includes a frame (1), a substrate (2) is embedded in the back groove of the frame (1), an aluminum sheet structure (3) is fixedly connected to the middle of the front side of the substrate (2), a display panel (7) is bonded to the front side of the aluminum sheet structure (3), and the edge of the display panel (7) is fitted into the front groove of the frame (1). A gap channel (8) is formed between the aluminum sheet structure (3), the frame (1), the substrate (2), and the display panel (7); The gap channel (8) includes multiple strip gaps between the aluminum sheet structure (3) and the display panel (7), and also includes crisscrossing mesh gaps between the aluminum sheet structure (3) and the substrate (2); The aluminum sheet structure (3) is formed using aluminum sheet material. On the basis of the original aluminum sheet plane, multiple transverse long protrusions are formed on the front side, and multiple transverse short protrusions are formed in the opposite direction between the long protrusions, so as to form the strip gap and the mesh gap at the front and back of the aluminum sheet structure respectively. The substrate (2) is connected to a transition plate (4) on the back side. Electronic and optical components are fixedly connected to the back side of the transition plate (4). Several adjustment components (5) are distributed on the transition plate (4) to adjust the unevenness of the top contact point on the substrate (2). The frame (1) includes an outer frame (11) and a limiting inner frame (12). The front and rear ends of the limiting inner frame (12) form front and rear grooves with the inner ring surface of the outer frame (11), respectively. The two sides and the upper edge of the substrate (2) are bonded to the rear end face of the limiting inner frame (12) through a flexible pad (6). The ring edge of the display panel (7) is bonded to the front end face of the limiting inner frame (12) through the flexible pad (6).

2. The aluminum plate laminated high heat dissipation liquid crystal display backplate according to claim 1, characterized in that: The aluminum sheet structure (3) forms the desensitization transfer layer between the substrate (2) and the display panel (7).

3. The aluminum plate laminated high heat dissipation liquid crystal display backplate according to claim 2, characterized in that: The adapter plate (4) includes several bonding areas (41), which are bonded to the back side of the substrate (2). The bonding areas (41) are fixedly connected to the substrate (2) through multiple threaded mating points (42). The multiple threaded mating points (42) are arranged in a rectangular array.

4. The aluminum plate laminated high heat dissipation liquid crystal display backplate according to claim 3, characterized in that: The lower edge of the adapter plate (4) is fixedly connected to the lower frame of the limiting inner frame (12), and the adapter plate (4) and the limiting inner frame (12) clamp and fix the lower edge of the base plate (2).

5. The aluminum plate laminated high heat dissipation liquid crystal display backplate according to claim 4, characterized in that: The area of ​​the adapter plate (4) other than the bonding area (41) is a raised area (43). The raised area (43) includes a mesh ridge structure and a number of boss structures. The mesh of the mesh ridge structure is the bonding area (41), and the boss structures are distributed in the bonding area (41).

6. The aluminum plate laminated high heat dissipation liquid crystal display backplate according to claim 5, characterized in that: The raised area (43) is provided with a number of high bumps (44), and the electronic and optical components are fixedly installed in contact with the end face of the high bumps (44) so ​​that a gap is formed between the electronic and optical components and the raised area (43).

7. The aluminum plate laminated high heat dissipation liquid crystal display backplate according to claim 6, characterized in that: The adjustment component (5) includes an adjustment bolt that engages with an adjustment screw hole, which is distributed within the raised area (43). The adjustment bolt is perpendicular to the substrate (2).

8. The aluminum plate laminated high heat dissipation liquid crystal display backplate according to claim 7, characterized in that: The adjusting screw hole on the mesh convex structure is a large-sized screw hole, and the large-sized screw hole is distributed on the transverse convex rib; the adjusting screw hole on the boss structure is a small-sized screw hole, and the boss structure with the adjusting screw hole is located at the center of the area surrounded by four adjacent points in the thread mating point (42) array.

9. The method for adjusting the flatness of an aluminum plate bonded to the back panel of a high-heat-dissipation liquid crystal display screen according to any one of claims 1-8, characterized in that, Includes the following steps: S1. Adjust the large-size adjustment components (5) layer by layer from bottom to top, and adjust the large-size adjustment components (5) of each layer from both sides to the middle in sequence; S2. Adjust the small-sized adjustment components (5) corresponding to the uneven area. When there are multiple small-sized adjustment components (5), adjust them layer by layer from the outer ring to the inner ring until they are completely flat.

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