Limiting support structure of hard backboard without surrounding edge and integral deep-drawing free and manufacturing method thereof

Abstract

This invention discloses a limiting and supporting structure for a rigid backplate without edge circumference and without deep drawing, belonging to the technical field of display device structural components. The backplate body is a one-piece, uniformly thick plate without a full-circumference edge or overall sidewall stretching, formed using a non-integral deep drawing process, maintaining the original thickness and shape of the plate material. The lower end of the backplate body is formed into a limiting component through partial shallow stamping or partial bending. The limiting component has a horizontal supporting surface and a vertical protective edge, which can cover the exposed COF (Chip-on-Foil) film area on the side of the display screen. This invention adds a dedicated limiting and shielding structure, suitable for assembling both flat and curved display panels.

Description

Technical Field

[0001] This invention relates to the field of structural components technology for display devices, specifically to a limiting and supporting structure for a rigid backplate without edge protection and without deep drawing, and its manufacturing method.

[0002] Process Definitions: Deep Drawing: The sheet metal undergoes extensive radial flow, resulting in continuous edge and sidewall thinning, requiring specialized multi-stage drawing dies. Shallow Punching, Local Bending: Plastic deformation occurs only in localized areas, resulting in a flat backplate surface with no overall material flow or extensive thinning. No Deep Drawing: The backplate body does not have an overall edge or undergo overall stretching, allowing for minor deformation of local functional structures. Background Technology

[0003] Existing display back panels mostly adopt a structure with a full-circle edge and overall deep drawing, and the COF flip-chip film on the side is mostly exposed without a dedicated shielding structure. Summary of the Invention

[0004] Purpose of the invention: The present invention aims to solve the technical problems of existing display backplates with COF flip-chip film lacking protection, high cost of overall deep drawing process, and limited panel compatibility specifications, and provides a limiting support structure for a rigid backplate without edge banding and without deep drawing, and its manufacturing method.

[0005] Technical Solution: A limiting and supporting structure for a rigid backplate without edge edging and requiring no deep drawing, comprising an integral rigid backplate body. The backplate body is a uniform thickness plate without a full-circle edge or overall sidewall tensile deformation, maintaining the original uniform thickness and shape of the original plate material. A limiting component is provided at the lower end of the backplate body, which is made by local shallow stamping or local bending, and consists of a horizontal supporting surface and a vertical protective edge; the protective edge forms a shielding structure for the exposed area of ​​the COF flip-chip film. The limiting component can be integrally formed or externally assembled; the external limiting component is fixed to the backplate body by snap-fit, hot-melt, adhesive, screw fastening, or riveting. The limiting component only forms a small local deformation at the lower edge of the backplate, and the main plate surface does not undergo overall tensile deformation. The backplate body is provided with a clearance structure, stamped protrusions / rivet posts, differential signal through holes, and base mounting holes, all of which are locally machined and do not undergo overall tensile deformation. This invention also provides a method for manufacturing a rigid back panel without edge protection and without deep drawing: a flat or curved rigid sheet material is selected as the base material, and the traditional integral deep drawing process is abandoned; a limiting component is formed at the lower end of the sheet material by local shallow stamping or local bending; various functional structures are formed by local fine processing, and finally a display back panel with uniform thickness and no tensile deformation is obtained.

[0006] Beneficial effects: This invention eliminates the overall edge structure of the back panel and adopts a non-integral deep-drawn structure; an integrated or assembled limiting component is set at the lower end of the back panel, which has both support and side shielding structure; the back panel can be set in a flat or curved form, and the sheet material maintains its original thickness. Attached Figure Description

[0007] Figure 1 This is a front view of the overall structure of the present invention; Figure 2 This is a schematic diagram of the side view of the flat backplate structure of the present invention; Figure 3 This is a side view of the curved backplate structure of the present invention; Figure 4 This is a partial enlarged view of the avoidance structure of the present invention; Figure 5 This is a partially enlarged schematic diagram of the limiting component of the present invention.

[0008] Figure label: 1—Backplane body; 2—Limiting components; 3—Avoidance structure; 4—Stamped protrusions / rivet posts; 5—Differential signal via; 6—Base mounting holes.

[0009] Detailed Implementation: The technical solution of the present invention will be further described in detail below with reference to specific embodiments, but the implementation of the present invention is not limited thereto.

[0010] Example 1: Flat Screen Integrated Back Panel Structure This example is adapted to a 27-inch flat screen. The back panel body (1) is made of 5052 aluminum alloy flat plate with a thickness of 1.2mm. It has no full-circle edging and does not use the overall deep drawing process. The lower end of the back panel body (1) is partially bent to form an integral limiting component (2). The vertical protective edge of the limiting component (2) covers the exposed area of ​​the COF flip-chip film on the side of the screen. The back panel body (1) is partially processed to form an avoidance structure (3), a stamped protrusion / rivet post (4), a differential signal through hole (5), and a base assembly mounting hole (6).

[0011] Example 2: Flat screen external limiting back plate structure This example is adapted to a 32-inch flat display panel. The back plate body (1) is made of DC06 cold-rolled steel plate with a thickness of 1.5mm. The lower end of the back plate body (1) is equipped with an external limiting component (2) and fixed by riveting. The limiting component (2) supports the panel and blocks the COF film on the side.

[0012] Example 3: Integrated Curved Screen Back Panel Structure without Deep Drawing This example is adapted to a 34-inch curved display panel. The back panel body (1) is made of SGCC galvanized sheet with a thickness of 1.5mm. It is formed into a continuous curved surface by room temperature bending without overall deep drawing. The lower end of the back panel body (1) is formed with a limiting component (2). The limiting component (2) fits the curved surface of the panel. The protective edge is covered with COF film on the side. The panel surface is provided with a clearance structure (3) and stamped protrusions / rivets (4).

[0013] Example 4: External limiting backplate structure for curved screen This example is adapted to a 49-inch ultra-wide curved display panel. The backplate body (1) is made of SECE electrolytic plate curved panel with a thickness of 1.8mm. The lower end of the backplate body (1) is fitted with a limiting component (2) through a buckle. The angle can be finely adjusted to adapt to the curved panel, so as to achieve support and COF film shielding protection.

[0014] Example 5: The backplate manufacturing method selects conventional hard metal sheet material and prefabricates it into a flat or curved shape; only the limiting component (2) is formed locally at the lower end of the plate body, and then the avoidance structure (3), stamped protrusion / rivet post (4), differential signal through hole (5) and base assembly mounting hole (6) are processed by local stamping, drilling and riveting. No overall deep drawing and large-area side wall stretching are performed throughout the process.

[0015] This invention is not limited to the above-described embodiments. Any equivalent modifications and substitutions made based on the structure and process disclosed in this invention shall fall within the protection scope of this invention.

Claims

1. A limiting and supporting structure for a rigid backplate without edge protection and requiring no deep drawing, comprising an integral rigid backplate body, characterized in that: The back panel body is a uniform thickness plate without a full-circle edge or overall sidewall stretching deformation. The back panel is formed by a non-integral deep drawing process, and the plate surface maintains the original plate shape and uniform thickness. The lower end of the back panel body is formed into a limiting component by local shallow stamping or local bending. The limiting component includes a horizontal support surface and a vertical protective edge. The protective edge covers the exposed area of ​​the COF flip-chip film on the side of the display screen.

2. The limiting and supporting structure of the integral rigid back panel without edge protection and without deep drawing as described in claim 1, characterized in that: The limiting component is integrally bent and formed with the back plate body, or it is an external component that is fixed to the back plate body by snap-fit, hot-melt, adhesive, screw fastening or riveting.

3. The limiting and supporting structure of the integral rigid back panel without edge protection and without deep drawing as described in claim 1, characterized in that: The backplate body has a flat structure or a continuous curved surface structure.

4. The limiting and supporting structure of the integral rigid back panel without edge protection and without deep drawing as described in claim 1, characterized in that: The backplate body is provided with locally machined avoidance structure, stamped protrusion / rivet post, differential signal through hole and base assembly mounting hole. Each structure is locally machined and there is no overall tensile deformation.

5. The limiting and supporting structure of the edgeless, integral, non-deep-drawing rigid back panel according to claim 1, characterized in that: The limiting component is located at the lower edge of the back panel, keeping the main body of the back panel intact and flat.

6. A method for manufacturing a rigid backplate without edge protection and without deep drawing, characterized in that: Includes the following steps: S1. Select a flat or curved rigid metal sheet as the base material and prefabricate it into a preset flat shape or continuous curved shape; S2. Abandon the overall deep drawing process and only form the limiting component by local shallow stamping or local bending at the lower end of the base material; S3. Through local precision stamping, drilling, and riveting, form the avoidance structure, stamped protrusions / rivet posts, differential signal through holes, and base assembly holes on the back plate body; S4. Do not perform overall deep drawing or large-area sidewall stretching throughout the process to obtain a display rigid back plate of uniform thickness and without stretching deformation.

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