Aluminum plate attached high-heat-dissipation liquid crystal display back plate

Abstract

The invention discloses an aluminum plate attached high-heat-dissipation liquid crystal display back plate which comprises a frame, a substrate is embedded in a back side embedding groove of the frame, an aluminum sheet structure is fixedly connected to the middle of the front side face of the substrate, a display panel adheres to the front side of the aluminum sheet structure, and the display panel is embedded in a front side embedding groove of the frame; a gap channel is formed among the aluminum sheet structure, the frame, the substrate and the display panel; the back side of the substrate is connected with an adapter plate, the back side of the adapter plate is fixedly connected with electronic and optical components, and a plurality of adjusting assemblies are distributed on the adapter plate and used for adjusting the concave-convex degree of abutting point positions on the substrate. The aluminum sheet structure forms a desensitization transmission layer between the substrate and the display panel. According to the invention, high bearing capacity and light weight of the back plate of the liquid crystal display panel are realized, high heat dissipation performance is obtained, and simple flatness adjusting operation is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of liquid crystal display screen back panels, in particular to an aluminum plate bonded to a high-heat dissipation liquid crystal display screen back panel. Background Art

[0002] The liquid crystal display panel is an important structural component of LCD TVs. The backplane of the liquid crystal display panel mainly supports the display panel and fixes electronic and optical components. It is usually made of metal or plastic. Among them, aluminum, as a metal material with excellent thermal conductivity, is theoretically a more preferred backplane material. However, considering the lightweight requirements, the backplane structure needs to be processed to be thinner, which makes the thin aluminum backplane have low load-bearing capacity on the display panel and difficult to adjust the flatness. Summary of the invention

[0003] Purpose of the invention: In order to overcome the deficiencies in the prior art, the present invention provides an aluminum plate bonded to a high-heat dissipation liquid crystal display backplane, thereby achieving high load-bearing capacity and lightness of the liquid crystal display panel backplane, obtaining high heat dissipation performance, and ensuring simple flatness adjustment operation.

[0004] Technical solution: To achieve the above purpose, the aluminum plate of the present invention is bonded to the back plate of a high heat dissipation liquid crystal display screen, comprising a frame, a substrate is embedded in the embedding groove on the back side of the frame, an aluminum sheet structure is fixedly connected to the middle 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 embedded in the embedding groove on the front side of the frame;

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

[0006] The back side of the substrate is connected to a transfer plate, the back side of the transfer plate is fixedly connected to electronic and optical components, and a plurality of adjustment components are distributed on the transfer plate to adjust the concave and convex degree of the supporting point on the substrate;

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

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

[0009] Furthermore, the adapter plate includes a plurality of fitting areas, the fitting areas are fitted with the back side of the substrate, and the fitting areas are fixedly connected to the substrate via a plurality of threaded fitting points; the plurality of threaded fitting points are distributed in a rectangular array.

[0010] Furthermore, the lower edge of the adapter plate is fixedly connected to the lower frame body 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 fitting area is a raised area, the raised area includes a mesh convex ridge structure and a plurality of boss structures, the mesh of the mesh convex ridge structure is the fitting area, and the boss structures are dispersed in the fitting area.

[0012] Furthermore, the raised area is distributed with a plurality of high protrusions, and the electronic and optical components are fixedly installed by adhering to the end faces of the high protrusions, so as to form a gap between the electronic and optical components and the raised area.

[0013] Furthermore, the adjustment assembly includes an adjustment bolt, the adjustment bolt cooperates with an adjustment screw hole, the adjustment screw holes are distributed in the raised area, and the adjustment bolt is relatively perpendicular to the base plate.

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

[0015] Further, the following steps are included:

[0016] S1. Adjust the large-sized adjustment components layer by layer from bottom to top, and adjust the large-sized adjustment components of each layer from both sides to the middle in sequence;

[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 circle to the inner circle until it is completely flat.

[0018] Beneficial effects: The aluminum plate of the present invention is bonded to the back plate of a high-heat dissipation liquid crystal display screen, and the display panel and the substrate are connected by a thin aluminum sheet, and a large-area heat dissipation channel is formed between the two. The high heat dissipation performance of the thin aluminum sheet and its large-area contact with the flowing airflow are used to achieve an efficient cooling effect of the display panel; an adjustment component is set on the back side of the substrate to adjust the degree of concavity of the plane of the substrate, thereby indirectly adjusting the flatness of the display panel; the thin aluminum sheet structure constitutes an adjustable desensitizing transfer layer, so that the flatness adjustment is easier to control and can achieve higher-precision micro-adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic side cross-sectional view of the upper edge structure of the back plate of the liquid crystal display screen of the present invention;

[0020] Figure 2 The figure is a schematic diagram of the back structure and the adapter plate structure of an embodiment of the present invention. DETAILED DESCRIPTION

[0021] The present invention will be further described below in conjunction with the accompanying drawings.

[0022] As attached Figure 1-2 The aluminum plate bonded high heat dissipation liquid crystal display backplane comprises 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 embedded in the front groove of the frame 1; a transfer 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 transfer plate 4. Among them, the frame can adopt a splicing structure, and any one of the four sides of the frame is set as a detachable structure, so as to form an opening on one side. When assembling the display panel 7, the display panel 7 can be bonded to the aluminum sheet structure in the middle of the substrate first, and then inserted from the opening, and finally the complete frame is installed. Avoiding the panel and the aluminum sheet structure from being bonded during the process of embedding and installing the display panel 7, bonding first can ensure the quality of bonding and make the connection between the two relatively firm. The assembly method can also be changed from installation and insertion to insertion installation, thereby avoiding 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 backplane is composed of a frame and a substrate. By adding an aluminum sheet structure and a transfer plate before and after the substrate, the aluminum sheet structure and the transfer plate are both aluminum stamping parts, which can enhance the strength of the substrate and improve the overall bearing capacity. The overall structure is made of aluminum with light weight, which realizes lightweight backplane. The aluminum sheet structure and the transfer plate are responsible for installing the display panel 7 and the optoelectronic components respectively, and respectively construct the heat dissipation duct between the display panel 7, the optoelectronic components and the main structure of the backplane, and the high heat dissipation performance of the aluminum sheet is combined with the high contact area of ​​the duct to achieve the overall high heat dissipation performance. The adjustment component is arranged on the back side of the substrate, and the flatness of the display panel 7 is indirectly adjusted by adjusting the concave and convex degree of the plane of the substrate, reducing the direct effect on the display backplane, and the desensitization transfer layer is formed by the thin aluminum sheet structure, so that the flatness adjustment is easier to control, and more accurate micro-adjustment can be achieved. Then the high bearing capacity and lightweight of the backplane of the liquid crystal display panel 7 are comprehensively realized, and high heat dissipation performance is obtained, and simple flatness adjustment operation is ensured.

[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 a plurality of strip gaps between the aluminum sheet structure and the display panel 7, and the plurality of strip gaps are parallel to each other and arranged horizontally; it also includes a criss-cross mesh gap between the aluminum sheet structure and the substrate, and the front and rear gaps of the aluminum sheet structure are connected through the annular gaps of its outer circle. Finally, holes are opened on the substrate and the adapter plate to allow gas to circulate. The relatively thin aluminum sheet structure can quickly absorb the heat generated by the display panel 7, and can also quickly release the absorbed heat. The heat is removed along 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, and a thin aluminum sheet is selected. On the basis of the original aluminum sheet plane, multiple long transverse ridges are stamped toward the front side, and multiple short transverse ridges are stamped in the reverse direction between these long ridges, so that parallel gaps and mesh gaps are formed in the front and back of the aluminum sheet structure, respectively, so that the gas flow direction and flow rate on the front and back sides are different, and the airflow on the back side is more complex and changeable. The relative turbulence of the front and back can accelerate the speed of heat transfer through the aluminum sheet to the outside, further improve the heat dissipation efficiency, and enhance the heat dissipation effect. In addition, the strength of the aluminum plate after stamping is strengthened to a certain extent, which can enhance its bearing capacity for the actual panel.

[0026] Several adjustment components 5 are distributed on the adapter plate 4; the movable ends of the plurality of adjustment components 5 are all against the back side of the substrate 2, and are used to adjust the degree of concavity and convexity of the abutting points on the substrate 2; since the substrate and the display panel 7 are connected as a whole, the degree of concavity and convexity of each point on the substrate is adjusted by multiple adjustment components, and the deformation generated can be transmitted to the display panel 7, so as to adjust the slight flatness difference of the panel. Since the adjustment component acts on the back of the substrate and does not directly act on the display panel 7, the damage to the panel structure caused by transitional adjustment is avoided. The substrate can adopt an aluminum plate structure with moderate thickness and certain flexibility. Through the top pressure excitation of a single point, it can diffuse from the low abutment point to the edge to form a curved surface structure with a small angle of curvature, and then be transmitted forward, so as to push the corresponding part of the display panel 7 forward, and finally make the flatness of the display panel 7 meet the requirements through multi-point adjustment.

[0027] The aluminum sheet structure 3 constitutes a desensitizing transmission layer between the substrate 2 and the display panel 7. It can reduce the speed and degree of the deformation of the substrate on the display panel 7. Preferably, the top point of the adjustment component is set to correspond to the gap channel on the back of the aluminum sheet. The existence of the gap channel provides a certain space for the small deformation of the substrate. When the deformation amount reaches a certain arc, the aluminum sheet structure body will be pushed forward, thereby acting on the back of the display panel 7, which can avoid excessive top pressure at the moment of adjustment and over-adjustment, achieving the purpose of desensitization, making the flatness adjustment amount generated by the longer stroke thrust smaller, thereby making it easier to control during manual adjustment, and realizing a flatness adjustment operation with more precise errors.

[0028] The frame 1 includes an outer frame body 11 and a limiting inner frame 12. The front and rear end faces of the limiting inner frame 12 respectively form front and rear embedding grooves with the inner annular surface of the outer frame body 11. 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 the flexible pad 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 pad 6. The lower edge of the adapter plate 4 is fixedly connected to the lower frame body of the limiting inner frame 12. The adapter plate 4 and the limiting inner frame 12 clamp and fix the lower edge of the substrate 2.

[0029] Among them, the limiting inner frame plays the role of constraining the relative position of the substrate and the display panel 7 in the front-to-back direction relative to the frame. The connection is made through elastic pads, so that the connection between the substrate and the display panel 7 and the frame can maintain a mutual connection relationship and produce a certain degree of angle floating. In the process of adjusting the flatness, the adaptive effect is achieved by stretching or compressing the local area of ​​the pad to avoid stress concentration. The outer frame of the frame can make the overall structure of the assembled backplane more stable. The frame is a relatively fixed structural member when assembled with other TV components, so the bottom edge of the adapter plate is directly bolted to the frame, and the bottom edge of the substrate is clamped, forcing the bottom edges of the substrate and the adapter plate to be relatively fixed and fixed to the frame structure. Then, by relying on the connection between the substrate and the display panel 7, the lower edge of the display panel 7 is basically fixed with the frame. When debugging the flatness, the lower edge of the display panel 7 is used as a reference, and the other parts of the display panel 7 are adjusted to be flush with the surface of the lower edge area, which not only ensures the adjustment of the flatness, but also ensures the relative position relationship between the plane of the display panel 7 and the frame after adjustment. Thus, the expected flatness requirement is achieved.

[0030] The adapter plate 4 includes a plurality of fitting areas 41, the fitting areas 41 are fitted with the back side of the substrate 2, and the fitting areas 41 are fixedly connected with the substrate 2 via a plurality of threaded fitting points 42. Preferably, the plurality of threaded fitting points 42 are arranged in a rectangular array. The area of ​​the adapter plate 4 other than the fitting area 41 is a raised area 43, the raised area 43 includes a mesh convex ridge structure and a plurality of boss structures, the mesh of the mesh convex ridge structure is the fitting area 41, and the boss structures are dispersed in the fitting area 41.

[0031] The adapter plate can be made of a thicker aluminum plate by stamping. On the basis of the plane of the original plate, a mesh of ridges and boss structures are stamped. The ridges play a role in strengthening the structural strength to further improve the bearing capacity of the overall back panel. The unformed raised area is installed against the base plate and fixed with multi-point bolts to form a distributed multi-point connection relationship between the adapter plate and the base plate. The area between these connection points can be slightly deformed by external force, thereby separating from each other to create gaps.

[0032] Preferably, the adjustment assembly 5 includes an adjustment bolt, the adjustment bolt cooperates with the adjustment screw hole, the adjustment screw hole is distributed in the convex area 43, and the adjustment bolt is relatively perpendicular to the substrate 2. This structure is easy to produce and easy to operate. When adjusting, for the relatively concave area, by rotating the adjustment bolt, the front end of the adjustment bolt is pressed against the back side of the substrate and pushed relatively away from the adapter plate. Since the substrate is more flexible than the adapter plate, the top area of ​​the substrate is slightly convex and deformed forward, thereby achieving the purpose of adjusting the flatness.

[0033] Preferably, the adjustment screw holes on the mesh convex rib structure are large-sized screw holes, which are distributed on the transverse convex ribs; the adjustment screw holes on the boss structure are small-sized screw holes, and the boss structure provided with the adjustment screw holes is located at the center of the area surrounded by four adjacent points in the array of threaded matching points 42. The large-sized screw holes cooperate with the large-sized adjustment bolts to form a large-sized adjustment component 5, and the small-sized screw holes cooperate with the small-sized adjustment bolts to form a small-sized adjustment component 5. The large-sized adjustment component 5 has a wider range of influence and is used for coarse adjustment of the overall range, while the small-sized adjustment component 5 is used for fine adjustment of the local range. The large-sized adjustment component 5 is arranged at the transverse convex rib position and arranged horizontally and equidistantly on each transverse convex rib, so that the coarse adjustment of the display panel 7 can be divided into multiple layers in the upper and lower directions, and it can be made flat by adjusting layer by layer. The small-sized adjustment component 5 is located at the center of the four adjacent fastening points, and the adjustment area is demarcated by the four fastening points, so that its adjustment deformation area is limited, and the adjustment range is also smaller, thereby achieving a more precise adjustment.

[0034] The raised area 43 is provided with a plurality of high convex points 44, and the electronic and optical components are fixedly installed in contact with the end faces of the high convex points 44, so as to form a gap between the electronic and optical components and the raised area 43. The heat transferred from the display panel 7 can be transmitted through the gap to avoid affecting the electronic and optical components, while ensuring the heat dissipation effect of the display panel 7 and the electronic and optical components. The padding heights of different electronic and optical components can be differentiated, so that adjacent components are arranged in layers with each other, and the heat dissipation effect is better.

[0035] The above-mentioned method for adjusting the flatness of the aluminum plate attached to the back plate of the high-heat dissipation liquid crystal display screen comprises the following steps:

[0036] 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; take the lower side edge as the reference, first adjust the flatness of the lowermost area, so that the plane of the lower side edge area of ​​the display panel remains parallel to the front end surface of the frame, or remains perpendicular to the inner side surface of the frame. The specific judgment and adjustment are determined according to the measurement method of the flatness during adjustment. After the flatness of the lower layer is determined, adjust it upward layer by layer, and adjust it with the adjacent lower layers as the reference in sequence, so that the overall flatness is finally kept roughly parallel to the front end surface of the frame to achieve coarse adjustment, and then measure the flatness to find out the area with slight flatness error for fine adjustment.

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

[0038] The above description is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the above principles of the present invention. These improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. Aluminum plate is bonded to the back panel of high heat dissipation LCD display, which is characterized by: It comprises a frame (1), a substrate (2) is embedded in a back side embedding 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 embedded in the front side embedding 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 back side of the substrate (2) is connected to an adapter plate (4), the back side of the adapter plate (4) is fixedly connected to electronic and optical components, and a plurality of adjustment components (5) are distributed on the adapter plate (4) for adjusting the degree of concavity and convexity of the supporting points on the substrate (2).

2. The aluminum plate bonded high heat dissipation liquid crystal display backplane according to claim 1 is characterized in that: The aluminum sheet structure (3) constitutes a desensitizing transfer layer between the substrate (2) and the display panel (7).

3. The aluminum plate bonded high heat dissipation liquid crystal display backplane according to claim 2, characterized in that: The frame (1) comprises an outer frame body (11) and a limiting inner frame (12); the front and rear end faces of the limiting inner frame (12) respectively form front and rear embedding grooves with the inner annular surface of the outer frame body (11); 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); and the annular edge of the display panel (7) is bonded to the front end face of the limiting inner frame (12) through the flexible pad (6).

4. The aluminum plate bonded high heat dissipation liquid crystal display backplane according to claim 3 is characterized in that: The adapter plate (4) comprises a plurality of fitting areas (41), wherein the fitting areas (41) fit with the back side of the substrate (2), and the fitting areas (41) are fixedly connected to the substrate (2) via a plurality of threaded fitting points (42); the plurality of threaded fitting points (42) are distributed in a rectangular array.

5. The aluminum plate bonded high heat dissipation liquid crystal display backplane according to claim 4, characterized in that: The lower edge of the adapter plate (4) is fixedly connected to the lower frame body 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).

6. The aluminum plate bonded high heat dissipation liquid crystal display backplane according to claim 5, characterized in that: The area of ​​the adapter plate (4) other than the fitting area (41) is a raised area (43), and the raised area (43) includes a mesh convex ridge structure and a plurality of boss structures. The mesh of the mesh convex ridge structure is the fitting area (41), and the boss structures are dispersed in the fitting area (41).

7. The aluminum plate bonded high heat dissipation liquid crystal display backplane according to claim 6, characterized in that: The raised area (43) is provided with a plurality of high protrusions (44) distributed thereon, and the electronic and optical components are fixedly installed by adhering to the end faces of the high protrusions (44) so ​​as to form a gap between the electronic and optical components and the raised area (43).

8. The aluminum plate bonded high heat dissipation liquid crystal display backplane according to claim 7, characterized in that: The adjustment assembly (5) comprises an adjustment bolt, the adjustment bolt cooperates with an adjustment screw hole, the adjustment screw hole is distributed in the raised area (43), and the adjustment bolt is relatively perpendicular to the base plate (2).

9. The aluminum plate bonded high heat dissipation liquid crystal display backplane according to claim 8, characterized in that: The adjusting screw holes on the mesh ridge structure are large-sized screw holes, and the large-sized screw holes are distributed on the transverse ridges; the adjusting screw holes on the boss structure are small-sized screw holes, and the boss structure provided with the adjusting screw holes is located at the center of an area surrounded by four adjacent points in the threaded fitting point (42) array.

10. The method for adjusting the flatness of an aluminum plate bonded to a high heat dissipation liquid crystal display backplane according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1, adjusting the large-sized adjustment components (5) layer by layer from bottom to top, and adjusting the large-sized 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 circle to the inner circle until they are completely flat.

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