A grounding structure of LCM iron frame

Abstract

The utility model provides a grounding structure of an LCM iron frame. A metal copper hole connected to GND is opened on a first FPC connected to an LCD display screen, and a convex portion is opened on the back of a lower iron frame to be aligned and connected to the metal copper hole, so that the iron frame and GND are connected. Static electricity or noise current generated inside the LCM can be safely introduced into the ground wire through this channel, and the LCM structure is fully utilized for grounding, thereby improving the anti-ESD performance of the LCM. The second FPC and the backlight FPC are connected to the first FPC, so that the FPC of the LCM is connected to the iron frame grounding through the first FPC, which helps to quickly ground the current when an electrical fault or short circuit occurs, thereby reducing the risk of damage to equipment and personnel.

Description

Technical Field

[0001] The utility model relates to the technical field of LCM grounding, in particular to the technical field of grounding of an LCM iron frame. Background Art

[0002] The iron frame of the display module is grounded mainly to discharge the static electricity in the frame, to prevent the display module from being damaged due to the inability to quickly discharge the static electricity, thereby increasing the service life of the display module. The industry usually sticks conductive double-sided tape on the back of the module FPC to ensure that the FPC fits tightly with the backlight iron frame after bending, and at the same time ensures that the FPC and the iron frame are effectively electrically connected. However, after the conductive double-sided tape is attached to the FPC, the leaking copper position can be released through the FPC grounding, but at the non-leaking copper position, since other lines of the FPC can still be connected to the backlight iron frame through the conductive double-sided tape, static electricity can easily randomly crosstalk to the display wiring or backlight wiring, resulting in abnormal conditions such as screen distortion and backlight LED damage, which increases the ESD risk to the display module monomer. Utility Model Content

[0003] The purpose of the utility model is to overcome the shortcomings of the prior art and provide a grounding structure designed to improve the anti-ESD performance by utilizing the LCM's own iron frame and FPC.

[0004] The purpose of this utility model is achieved through the following technical solutions:

[0005] A grounding structure of an LCM iron frame comprises an LCD display, an upper iron frame, a lower iron frame, a first FPC and a second FPC, wherein the upper iron frame and the lower iron frame are buckled together and wrap the LCD display and its backlight inside, the first FPC is attached to the back of the lower iron frame and connected to the LCD display, a protrusion is provided on the back of the lower iron frame, the first FPC is provided with a metal copper hole, the protrusion is connected to the metal copper hole, and the second FPC is connected to the first FPC.

[0006] Furthermore, the first FPC is bent and attached to the back side of the lower iron frame.

[0007] Furthermore, there is at least one protrusion, and the protrusion is integrally formed with the lower iron frame, so that the protrusion has stability by relying on the lower iron frame.

[0008] Preferably, the protrusion is concave in shape, which helps to reduce movement and misalignment during welding and improve the accuracy and quality of welding.

[0009] Furthermore, the height of the protrusion is greater than the thickness of the first FPC.

[0010] Preferably, the protrusion is made of metal alloy.

[0011] Furthermore, the metal copper hole includes a copper-exposed area and a through hole, the protrusion is aligned with the through hole, passes through the metal copper hole and is welded thereto, and the solder joint is connected to the copper-exposed area, so that the protrusion is effectively connected to the copper-exposed area, thereby connecting to GND.

[0012] Furthermore, the protrusion of the lower iron frame is connected to the metal copper hole by soldering, so that the iron frame and the first FPC are fixed together.

[0013] Furthermore, one end of the second FPC is welded to the first FPC, and the other end is connected to the terminal device.

[0014] Furthermore, the grounding structure also includes a backlight FPC, and the backlight FPC is connected to the first FPC.

[0015] The beneficial effects of the utility model are:

[0016] 1. By opening a metal copper hole connected to GND on the first FPC connected to the LCD display, a raised part is opened on the back of the lower iron frame to align with the metal copper hole to achieve conduction between the iron frame and GND. The static electricity or noise current generated inside the LCM can be safely introduced into the ground wire through this channel, making full use of the LCM structure for grounding, thereby improving the anti-ESD performance of the LCM.

[0017] 2. The second FPC connected to the terminal device and the backlight FPC connected to the backlight are connected to the first FPC, so that the FPC assembly of the LCM is connected to the iron frame ground through the first FPC, providing a low-impedance current loop, which helps to quickly conduct current to the ground when an electrical fault or short circuit occurs, thereby reducing the risk of damage to equipment and personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 This is the front view of the grounding structure of the LCM iron frame;

[0020] Figure 2 This is the rear view of the grounding structure of the LCM iron frame;

[0021] Figure 3 This is the rear view of the LCM lower iron frame;

[0022] Figure 4 This is a side view of the lower iron frame of the LCM. DETAILED DESCRIPTION

[0023] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively with reference to the relevant drawings. The drawings provide preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thoroughly and comprehensively understood.

[0024] It should be noted that when an element is considered to be "connected" to another element, it may be directly connected to another element or there may be an intermediate element at the same time. The terms "back", "upper", "lower" and similar expressions used herein are only for illustrative purposes and do not represent the only implementation method.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0026] See also Figure 1 , Figure 2 In the first embodiment of the utility model, the grounding structure of the LCM iron frame includes an LCD display screen 1, an upper iron frame 2, a lower iron frame 3, a first FPC4 and a second FPC5. The upper iron frame 2 and the lower iron frame 3 are buckled together, and the LCD display screen 1 and its backlight are wrapped inside. The first FPC4 is attached to the back of the lower iron frame 3 and connected to the LCD display screen 1. A protrusion 31 is provided on the back of the lower iron frame 3. The first FPC4 is provided with a metal copper hole 41. The protrusion is connected to the metal copper hole 41, and the second FPC5 is connected to the first FPC4.

[0027] In this embodiment, the upper iron frame 2 and the lower iron frame 3 are combined together by buckling to form a closed structure, which wraps the LCD display screen 1 and its backlight inside. The first FPC4 is attached to the back of the lower iron frame 3 and connected to the LCD display screen 1, serving as a signal transmission medium between the LCD display screen 1 and the circuit board or other external components. The second FPC5 is connected to the first FPC4 to further expand the signal transmission path or connect other functional modules. The lower iron frame 3 is provided with a protrusion 31 on the back, and is connected to the metal copper hole 41 connected to the GND (ground wire) on the first FPC4 to form a stable grounding channel. In this way, the static electricity or noise current generated inside the LCM can be safely introduced into the ground wire through this channel to avoid interference or damage to the normal operation of the LCM.

[0028] See also Figure 2 , Figure 3 , Figure 4 In the second embodiment of the utility model, the lower iron frame 3 is made of aluminum alloy. The lower iron frame 3 is provided with a concave protrusion 31, which is integrally formed with the lower iron frame 3. The height of the protrusion 31 is greater than the thickness of the first FPC 4. The first FPC 4 is bent and attached to the back of the lower iron frame 3. The first FPC 4 is provided with a metal copper hole 41. The metal copper hole 41 includes a copper-exposed area and a through hole. The protrusion 31 is aligned with the through hole and passes through. The two are connected by soldering, and the solder joint connects the copper-exposed area. In this way, the protrusion 31 and the metal copper hole 41 form an effective connection, thereby connecting GND.

[0029] In this embodiment, the lower iron frame 3 is made of aluminum alloy, which can not only provide sufficient mechanical support, but also effectively dissipate heat to maintain the stable operation of the LCM. The protrusion 31 thereon is formed integrally with it, so that the protrusion 31 relies on the lower iron frame for stability, avoiding loose welding or LCM shaking and causing it to fall off, affecting grounding.

[0030] In this embodiment, one end of the second FPC5 is welded to the first FPC4, and the other end is connected to the terminal device. The grounding structure also includes a backlight FPC6, which is also connected to the first FPC4, so that the FPC of the LCM is grounded to the lower iron frame 3 through the first FPC4, providing a low-impedance current loop, which helps to quickly ground the current when an electrical fault or short circuit occurs.

[0031] It should be noted that this embodiment does not limit the second FPC and the backlight FPC to be grounded in other ways.

[0032] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A grounding structure of an LCM iron frame, comprising an LCD display, an upper iron frame, a lower iron frame, a first FPC and a second FPC, characterized in that: The upper iron frame and the lower iron frame are buckled together, and the LCD display screen and its backlight are wrapped inside. The first FPC is attached to the back of the lower iron frame and connected to the LCD display screen. A protrusion is provided on the back of the lower iron frame. The first FPC is provided with a metal copper hole. The protrusion is connected to the metal copper hole. The second FPC is connected to the first FPC.

2. The grounding structure of the LCM iron frame according to claim 1, characterized in that: The first FPC is bent and attached to the back side of the lower iron frame.

3. The grounding structure of the LCM iron frame according to claim 1, characterized in that: There is at least one protrusion, and the protrusion is integrally formed with the lower iron frame.

4. The grounding structure of the LCM iron frame according to claim 1, characterized in that: The protrusion is in a concave shape.

5. The grounding structure of the LCM iron frame according to claim 1, characterized in that: The height of the protrusion is greater than the thickness of the first FPC.

6. The grounding structure of the LCM iron frame according to claim 1, characterized in that: The protrusion is made of metal alloy.

7. The grounding structure of the LCM iron frame according to claim 1, characterized in that: The metal copper hole comprises a copper-exposed area and a through hole. The protrusion is aligned with the through hole, passes through the metal copper hole and is welded thereto, and the welding point is connected to the copper-exposed area.

8. The grounding structure of the LCM iron frame according to claim 1, characterized in that: The protrusion of the lower iron frame is connected to the metal copper hole by soldering, so that the iron frame is fixed to the first FPC.

9. The grounding structure of the LCM iron frame according to claim 1, characterized in that: One end of the second FPC is welded to the first FPC, and the other end is connected to the terminal device.

10. The grounding structure of the LCM iron frame according to claim 1, characterized in that: It also includes a backlight FPC, and the backlight FPC is bonded to the first FPC.

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