A structure for avoiding ESD failure and noise on a display screen backlight

Abstract

The utility model discloses a structure can avoid ESD failure and not produce abnormal sound on display screen backlight, including backlight casing, backlight muscle position, single -sided adhesive, backlight boss, printed wiring board, screw and support, wherein, backlight muscle position set up on backlight casing, single -sided adhesive set up in the four around of backlight boss, the backlight boss sets up on the backlight casing, printed wiring board detachably set up on the backlight casing. Thus, through the advantage that the amount of compression of the back -to -back bubble cotton single -sided adhesive is bigger, printed wiring board is easier to with the backlight metal ground, also can play the supporting action and avoid the abnormal sound that printed wiring board and backlight hard contact produce, also can play the supporting action and avoid the problem that printed wiring board deformation amount is too big, and because can with the backlight boss metal ground, increased ground area.

Description

Technical Field

[0001] This utility model relates to the technical field of automotive displays and central control screens, and in particular to a structure on the backlight of a display screen that can avoid ESD failure and does not produce abnormal noise. Background Technology

[0002] With the development of technology, cars are becoming increasingly intelligent. For consumers, cars are no longer just simple means of transportation, but also a carrier of entertainment and lifestyle. Users are pursuing products with increasingly diverse functions and higher cost-effectiveness. In recent years, automakers have been tirelessly innovating components, pursuing cost reduction, rich functionality, and compact and stable designs. However, in previous designs, a single piece of foam adhesive was pasted onto the backlight. The compression of a single piece of foam adhesive is smaller than that of a rectangular piece of foam adhesive, making it difficult for the ribs on the backlight to have a large contact area with the exposed copper or immersion gold areas of the printed circuit board, posing a risk of ESD failure. Utility Model Content

[0003] This utility model aims to solve one of the technical problems in related technologies to a certain extent.

[0004] Therefore, the purpose of this utility model is to propose a structure for the backlight of a display screen that can avoid ESD failure and generate abnormal noise. By utilizing the advantage of the larger compression of the single-sided adhesive of the U-shaped foam, the printed circuit board is more easily grounded to the backlight metal. At the same time, it avoids abnormal noise caused by hard contact between the printed circuit board and the backlight. It can also play a supporting role to avoid the problem of excessive deformation of the printed circuit board. Furthermore, because it can be grounded to the backlight boss metal, the grounding area is increased.

[0005] To achieve the above objectives, this utility model proposes a structure for a display screen backlight that can avoid ESD failure and prevent abnormal noise, including a backlight housing, backlight ribs, single-sided adhesive, backlight bosses, and a printed circuit board. The backlight ribs are disposed on the backlight housing; the single-sided adhesive is disposed around the backlight bosses; the backlight bosses are disposed on the backlight housing; and the printed circuit board is detachably disposed on the backlight housing.

[0006] This invention relates to a structure for display screen backlights that avoids ESD failure and generates abnormal noise. Utilizing the advantage of greater compression of the U-shaped foam single-sided adhesive, the printed circuit board (PCB) is more easily grounded to the backlight metal. This avoids noise caused by hard contact between the PCB and the backlight, and also provides support to prevent excessive deformation of the PCB. Furthermore, the raised backlight section in the center of the U-shaped foam single-sided adhesive increases the grounding area.

[0007] In addition, the structure for avoiding ESD failure and producing abnormal noise on the backlight of a display screen as proposed above may also have the following additional technical features: Specifically, the backlight housing is provided with a plurality of positioning posts, and the printed circuit board is provided with a bracket that matches the positioning posts. The bracket is mounted on the printed circuit board through the positioning posts.

[0008] Specifically, the printed circuit board and the bracket are respectively provided with through holes, and are fixed to the backlight housing by screws passing through the through holes.

[0009] Specifically, the single-sided adhesive is a U-shaped foam single-sided adhesive, the backlight housing has raised metal parts for backlight bosses and backlight ribs, the single-sided adhesive is a U-shaped foam single-sided adhesive, the end face of the printed circuit board relative to the backlight bosses and backlight ribs has a grounding area such as an exposed copper area or an immersion gold area, the compressed U-shaped foam single-sided adhesive can be grounded with the backlight boss in the middle of the U-shaped foam single-sided adhesive, and at the same time can ensure the contact area between the printed circuit board and the backlight ribs for grounding.

[0010] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0011] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, in which: Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the structure of the present invention with a printed circuit board attached; Figure 3 A schematic diagram of the printed circuit board and bracket structure of this utility model; Figure 4 This is an enlarged view of the single-sided adhesive and the backlight boss of this utility model; Figure 5 This is a partial cross-sectional view of the single-sided adhesive and backlight protrusion of this utility model.

[0012] As shown in the figure: 1. Backlight housing; 2. Backlight ribs; 3. Single-sided adhesive; 4. Backlight boss; 5. Printed circuit board; 6. Screws; 7. Bracket. Detailed Implementation

[0013] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention. Rather, the embodiments of the present invention include all variations, modifications, and equivalents falling within the appended spirit and connotation.

[0014] The following description, in conjunction with the accompanying drawings, describes a structure on the backlight of a display screen that can prevent ESD failure and avoid abnormal noise.

[0015] like Figure 1-5 As shown in the figure, a structure for a display screen backlight that can avoid ESD failure and does not produce abnormal noise according to an embodiment of the present invention includes a backlight housing 1, a backlight rib 2, a single-sided adhesive 3, a backlight boss 4, and a printed circuit board 5.

[0016] Among them, the backlight rib 2 is set on the backlight housing 1, the single-sided adhesive 3 is set around the backlight boss 4, the backlight boss 4 is set on the backlight housing 1, and the printed circuit board 5 is detachably set on the backlight housing 1.

[0017] It should be noted that when the backlight rib 2 is on the backlight housing 1 and the printed circuit board 5 is installed on the backlight housing 1, the backlight protrusion 4 on the backlight housing 1 is already surrounded by single-sided adhesive 3. The grounding contact surface between the printed circuit board 5 and the backlight rib 2 is ensured by the single-sided adhesive 3, so there is no need to use additional grounding foam.

[0018] In one embodiment of this utility model, such as Figure 3 As shown, the backlight housing 1 is provided with multiple positioning posts. The printed circuit board 5 is first mounted on the backlight housing 1 through the positioning posts. The printed circuit board 5 is provided with a bracket 7 that matches the positioning posts. The bracket 7 is positioned and mounted on the backlight housing 1 through the positioning posts.

[0019] A positioning post is provided on the backlight housing 1, and a bracket 7 is provided on the printed circuit board 5. The bracket 7 is installed on the printed circuit board 5 and is fixed to the backlight housing 1 by screws 6 passing through the through holes of the printed circuit board 5 and the bracket 7. During installation, the printed circuit board 5 presses down on the single-sided adhesive 3, which effectively enhances the stability of the printed circuit board 5 during installation.

[0020] In one embodiment of this utility model, such as Figure 1 As shown, the single-sided adhesive 3 is a U-shaped foam single-sided adhesive. Compressing the U-shaped foam single-sided adhesive 3 allows it to be grounded with the backlight protrusion 4 in the middle of the U-shaped foam single-sided adhesive. At the same time, it ensures the contact area between the printed circuit board 5 and the backlight rib position 2 for grounding.

[0021] It should be noted that the single-sided adhesive 3 can be any one of the following: a U-shaped single-sided foam adhesive, a U-shaped double-sided foam adhesive, a square-shaped single-sided foam adhesive, or a square-shaped double-sided foam adhesive. The specific shape is set according to the actual application requirements. The shape of the backlight protrusion 4 is not limited to that shown in the figure and is set according to actual needs. It is also not limited to the display screen mentioned in the text; the same applies to the central control screen, etc.

[0022] Specifically, the steps for installing the printed circuit board (PCB) on the backlight housing are as follows: First, the PCB 5 is positioned and installed on the backlight housing 1 using the positioning posts. Then, the bracket 7 is positioned and installed using the positioning posts. Subsequently, screws 6 are used to fix the PCB to the backlight housing 1 through the through holes in the bracket 7 and the PCB 5. During installation, the grounding contact area between the PCB 5 and the backlight rib 2 is ensured by single-sided adhesive tape 3, which can replace grounding foam. This design saves space, is compact, structurally stable, less prone to rattling, and reduces costs.

[0023] In summary, the present invention provides a structure for a display screen backlight that can avoid ESD failure and generate abnormal noise. By utilizing the advantage of greater compression of the U-shaped foam single-sided adhesive, the printed circuit board is more easily grounded to the backlight metal, while avoiding abnormal noise caused by hard contact between the printed circuit board and the backlight. The backlight protrusion in the middle of the single-sided adhesive can also play a supporting role to avoid excessive deformation of the printed circuit board, while increasing the grounding area.

[0024] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A structure for a display screen backlight that can prevent ESD failure and generate abnormal noise, characterized in that, It includes a backlight housing (1), a backlight rib (2), a single-sided adhesive (3), a backlight boss (4), and a printed circuit board (5), wherein, The backlight rib (2) is disposed on the backlight housing (1); The single-sided adhesive (3) is disposed around the backlight protrusion (4); The backlight protrusion (4) is disposed on the backlight housing (1); The printed circuit board (5) is detachably mounted on the backlight housing (1).

2. The structure for a display screen backlight that can avoid ESD failure and generate abnormal noise according to claim 1, characterized in that, The backlight housing (1) is provided with multiple positioning posts, and the printed circuit board (5) is provided with a bracket (7) that matches the positioning posts. The bracket (7) is positioned and installed on the printed circuit board (5) by the positioning posts.

3. The structure for a display screen backlight that can avoid ESD failure and generate abnormal noise according to claim 2, characterized in that, The printed circuit board (5) and the bracket (7) are respectively provided with through holes, and the printed circuit board (5) and the bracket (7) are fixed to the backlight housing (1) by screws (6).

4. The structure for a display screen backlight that can avoid ESD failure and generate abnormal noise according to claim 1, characterized in that, The single-sided adhesive (3) is a U-shaped foam single-sided adhesive. The backlight boss (4) is a metal protrusion on the backlight housing (1). The printed circuit board (5) has a copper exposed area or immersion gold area grounded on the end face of the backlight boss (4) and the backlight rib (2). The compressed single-sided adhesive (3) can be grounded with the backlight boss (4) in the middle of the single-sided adhesive. At the same time, the contact area between the printed circuit board (5) and the backlight rib (2) can be guaranteed by the single-sided adhesive (3).

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