An electrostatic shielded display device

Abstract

This utility model relates to the field of display device technology, specifically disclosing an electrostatic shielding display device, comprising: a display panel, the display panel including a panel body and a conductive film attached to the front side of the panel body; a conductive plate located on the back side of the panel body; and a plurality of conductive connectors, one end of each conductive connector being connected to the edge of the conductive film and the other end being connected to the edge of the conductive plate; wherein the conductive film, each conductive connector, and the conductive plate together constitute a Faraday cage structure accommodating the panel body, thereby shielding the panel body from changing electromagnetic fields outside the panel body. The electrostatic shielding display device provided by this utility model can effectively solve the problem that internal components on the panel body are easily damaged during electrostatic discharge testing.

Description

Technical Field

[0001] This utility model relates to the field of display device technology, and in particular to an electrostatic shielding display device. Background Technology

[0002] In the research and development and production of display devices, electrostatic discharge (ESD) testing is a critical reliability verification step, used to assess the device's ability to resist external electrostatic shocks. In certain testing scenarios, such as when the display panel is required to be placed face down directly on a metal test platform for testing, and the entire device is not powered on, the protection of the internal integrated circuits (ICs) faces severe challenges.

[0003] In this test scenario, when ESD discharge is applied to the metal housing or screws of the display device, electrostatic charge easily accumulates around the metal housing, creating a strong electric field environment between it and the grounded metal test platform below. The drastic change in electric field generated during discharge induces a transient current (induced current) within the display device's internal space. The display panel typically contains precision signal traces connecting IC chips, and these traces are extremely sensitive to transient currents. Once the induced current couples into these traces, it can easily flow to and damage critical components such as IC chips, causing the display to malfunction.

[0004] Therefore, existing display devices need to be improved to address the problem that their internal components are easily damaged during electrostatic discharge testing.

[0005] The information disclosed in this background section is included only to enhance the understanding of the context of this disclosure, and therefore may contain information that does not constitute prior art known to those skilled in the art. Utility Model Content

[0006] One objective of this invention is to provide an electrostatic shielded display device that can effectively solve the problem that internal components are easily damaged during electrostatic discharge testing.

[0007] To achieve the above objectives, this utility model provides an electrostatic shielded display device, comprising:

[0008] The display panel includes a panel body and a conductive film attached to the front side of the panel body.

[0009] A conductive plate, the conductive plate being located on the back side of the panel body;

[0010] A plurality of conductive connectors, one end of each conductive connector being connected to the edge of the conductive film and the other end being connected to the edge of the conductive plate;

[0011] The conductive film, each of the conductive connectors, and the conductive plate together constitute a Faraday cage structure that houses the panel body, thereby shielding the panel body from changing electromagnetic fields outside the panel body.

[0012] Optionally, the conductive film is an ITO film.

[0013] Optionally, the conductive plate is a backlight sheet metal part used to support the display panel.

[0014] Optionally, the conductive connector is a continuously extending strip structure that extends from one end of the conductive film and the conductive plate to the other end of the conductive film and the conductive plate.

[0015] Optionally, the conductive connector is EMI tape.

[0016] Optionally, the conductive film is a conductive copper foil, and both the conductive film and the conductive plate are connected to the conductive copper foil by conductive adhesive.

[0017] Optionally, the panel body is provided with an IC chip;

[0018] The edge of the conductive film includes a conductive edge for connecting to each of the conductive connectors, and a bonding edge corresponding to the IC chip. Only each of the conductive edges is provided with a conductive connector.

[0019] Optionally, the top, left, and right edges of the conductive film are all conductive edges, and the bottom edge of the conductive film is a bonding edge.

[0020] Optional, also includes:

[0021] The housing has an open cavity, the display panel and the conductive plate are both located in the cavity, and the conductive plate is located on the side of the display panel away from the opening of the cavity.

[0022] Optional, also includes:

[0023] A cover frame, located at the opening of the housing, is used to cooperate with the housing to fix the display panel and the conductive plate.

[0024] The beneficial effects of this utility model are as follows: It provides an electrostatic shielding display device, which, through the combination and connection of the conductive film, the plurality of conductive connectors, and the conductive plate, encloses and completely surrounds the panel body. This structure is physically equivalent to a continuously conductive metal closed shell, which, based on the Faraday cage principle, can effectively shield the changing electromagnetic field outside the panel body, thereby protecting the panel body during electrostatic discharge testing and preventing damage to the panel body due to excessive induced current.

[0025] Specifically, in strong electric field environments such as electrostatic discharge (ESD) testing, the drastically changing external electric field is blocked by the conductive layer formed by the conductive film, the conductive plate, and their connecting structures. This protects the internal space of the panel body (especially the area containing precision signal traces) from the intrusion of external transient electric fields. It significantly suppresses harmful transient currents (induced currents) induced within the panel body by changes in the external electric field.

[0026] Therefore, the electrostatic shielding display device provided by this utility model can effectively solve the problem that the internal components on the panel body are easily damaged during electrostatic discharge testing. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 A side view of the electrostatic shielded display device provided in the embodiment.

[0029] Figure 2 This is a front view of the display panel provided in an embodiment.

[0030] 1. Display panel; 101. Panel body; 1011. IC chip; 102. Conductive film;

[0031] 2. Conductive plate;

[0032] 3. Conductive connectors; 3a. Top edge EMI tape; 3b. Left edge EMI tape; 3c. Right edge EMI tape;

[0033] 4. Outer shell;

[0034] 5. Cover plate frame. Detailed Implementation

[0035] In this utility model, the reference to "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment can be included in at least one embodiment of this utility model. The term "embodiment" appearing in various places throughout the specification does not necessarily refer to the same embodiment, nor does it specifically limit its independence or connection with other embodiments. In principle, in this utility model, as long as there are no technical contradictions or conflicts, the technical features mentioned in each embodiment can be combined in any way to form corresponding implementable technical solutions.

[0036] Unless otherwise defined, the technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the use of related terms herein is merely for the purpose of describing particular embodiments and is not intended to limit the invention.

[0037] In the description of this utility model, the term "and / or" is used to describe the logical relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A exists, B exists, and A and B exist simultaneously. Additionally, the character " / " generally indicates that the preceding and following objects have an "or" logical relationship.

[0038] In this invention, terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any actual quantity, hierarchy, or order between these entities or operations.

[0039] Without further limitations, the use of terms such as “comprising,” “including,” “having,” or other similar expressions in this invention is intended to cover non-exclusive inclusion, which does not exclude the presence of additional elements in a process, method, or product that includes the stated elements, such that a process, method, or product that includes a series of elements may include not only those defined elements but also other elements not expressly listed, or elements inherent to such a process, method, or product.

[0040] Similar to the understanding in the Examination Guidelines, in this utility model, expressions such as "greater than," "less than," and "exceeding" are understood to exclude the stated number; expressions such as "above," "below," and "within" are understood to include the stated number. Furthermore, in the description of the embodiments of this utility model, "multiple" means two or more (including two), and similar expressions related to "multiple" are also understood in this way, such as "multiple groups" and "multiple times," unless otherwise explicitly specified.

[0041] In the description of the embodiments of this utility model, the space-related expressions used, such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "vertical," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," indicate the orientation or positional relationship based on the orientation or positional relationship shown in the specific embodiments or drawings. They are only for the convenience of describing the specific embodiments of this utility model or for the reader's understanding, and do not indicate or imply that the device or component referred to must have a specific position, a specific orientation, or be constructed or operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model.

[0042] Unless otherwise expressly specified or limited, the terms "installation," "connection," "linking," "fixing," and "setting," as used in the description of the embodiments of this utility model, should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two components or the interaction between two components. For those skilled in the art to which this utility model pertains, the specific meaning of the above terms in the embodiments of this utility model can be understood according to the specific circumstances.

[0043] The direct drive mechanism in this invention can be a linear motor, a cylinder, a hydraulic cylinder, or a motor lead screw and slider assembly, etc.; the rotary drive mechanism can be a servo motor, a stepper motor, or a rotary cylinder, etc.

[0044] This invention provides an electrostatic shielded display device that can effectively solve the problem that internal components are easily damaged during electrostatic discharge testing.

[0045] See Figure 1 and Figure 2 The electrostatic shielded display device provided in this embodiment includes:

[0046] Display panel 1, the display panel 1 includes panel body 101 and conductive film 102 attached to the front side of panel body 101;

[0047] Conductive plate 2, the conductive plate 2 is located on the back side of the panel body 101;

[0048] A plurality of conductive connectors 3, one end of each conductive connector 3 being connected to the edge of the conductive film 102 and the other end being connected to the edge of the conductive plate 2;

[0049] The conductive film 102, each of the conductive connectors 3, and the conductive plate 2 together constitute a Faraday cage structure that accommodates the panel body 101, so as to shield the panel body 101 from changing electromagnetic fields outside the panel body 101.

[0050] Optionally, the electrostatic shielded display device also includes:

[0051] The outer casing 4 has an open cavity, the display panel 1 and the conductive plate 2 are both located in the cavity, and the conductive plate 2 is located on the side of the display panel 1 away from the opening of the cavity.

[0052] Cover frame 5, located at the opening of the outer casing 4, is used to fix the display panel 1 and the conductive plate 2 in conjunction with the outer casing 4.

[0053] Mechanical support is provided by the outer shell 4 and the cover frame 5. The accommodating cavity of the outer shell 4 and the internal components of the fixing device of the cover frame 5 ensure that the Faraday cage structure is not affected by displacement or vibration during ESD testing. At the same time, the outer shell 4 itself acts as an additional grounding layer, working with the Faraday cage to attenuate the external electric field, thereby improving the structural stability of the device and the overall ESD protection capability.

[0054] The electrostatic shielding display device provided in this embodiment encloses and completely surrounds the panel body 101 through the combined connection of the conductive film 102, the plurality of conductive connectors 3, and the conductive plate 2. This structure is physically equivalent to a continuously conductive metal closed shell, which can effectively shield the changing electromagnetic field outside the panel body 101 according to the Faraday cage principle, thereby protecting the panel body 101 during electrostatic discharge testing and preventing damage to the panel body 101 due to excessive induced current.

[0055] Specifically, in strong electric field environments such as electrostatic discharge (ESD) testing, the rapidly changing external electric field is blocked by the conductive layer formed by the conductive film 102, the conductive plate 2, and their connecting structures. This protects the internal space of the panel body 101 (especially the area containing precision signal traces) from the intrusion of external transient electric fields. It significantly suppresses harmful transient currents (induced currents) induced within the panel body 101 by changes in the external electric field.

[0056] Therefore, the electrostatic shielding display device provided by this utility model can effectively solve the problem that the internal components on the panel body 101 are easily damaged during electrostatic discharge testing.

[0057] Optionally, the conductive film 102 is an ITO film, and the conductive plate 2 is a backlight sheet metal part used to support the display panel 1.

[0058] It should be noted that the ITO (Indium Tin Oxide) film is a standard component that must be present in the liquid crystal display panel 1 (LCD) or touch screen to realize electrode functions (such as driving liquid crystal deflection) or touch sensing functions. It is already an inherent structural layer on the front side of the display panel 1. In this embodiment, the ITO film is used as the conductive thin film 102, eliminating the need to add an additional conductive layer. The existing ITO layer is directly reused as the front shielding layer of the Faraday cage. This avoids both additional material costs (such as separately attaching metal foil) and occupying limited internal space of the device.

[0059] Similarly, backlight sheet metal components are essential support and heat dissipation structures in LCD displays. They are typically made of metals such as aluminum alloy or stainless steel and are used to fix the backlight source (such as LED strips), reflective film, and provide mechanical strength for the entire device. In this embodiment, existing backlight sheet metal components are directly reused as the back shielding layer of the Faraday cage, eliminating the need for additional metal shielding plates and saving material, processing, and assembly costs.

[0060] By reusing the functions of the ITO film and backlight sheet metal parts, essential optical layers and structural components in display devices are transformed into electromagnetic shielding layers of Faraday cages. This design achieves critical protection functions at extremely low cost (requiring only conductive connectors such as EMI tape), serving as a model of hardware integration innovation and perfectly meeting the engineering demands for miniaturization, low cost, and high reliability in electronic devices.

[0061] In this embodiment, the conductive connector 3 is a continuously extending strip structure, extending from one end of both the conductive film 102 and the conductive plate 2 to the other end of both. For example, the conductive connector 3 is EMI tape; or, the conductive film 102 is conductive copper foil, and both the conductive film 102 and the conductive plate 2 are connected to the conductive copper foil by conductive adhesive.

[0062] The continuously extending strip structure design optimizes the edge shielding integrity of the Faraday cage. By maximizing the coverage of the gap between the conductive film 102 and the conductive plate 2 through the continuous strip structure (such as EMI tape), combined with the high conductivity of the conductive copper foil and the reliable adhesion of the conductive adhesive, electromagnetic leakage paths are eliminated, providing seamless electric field blocking in ESD testing, and significantly suppressing transient current generation at the opening, thereby enhancing the shielding effectiveness and durability of the overall device.

[0063] For example, in this embodiment, the panel body 101 is provided with an IC chip 1011. The edge of the conductive film 102 includes a conductive edge for connecting with each of the conductive connectors 3, and a bonding edge corresponding to the IC chip 1011. The conductive connectors 3 are only provided on each of the conductive edges. Since the IC chip 1011 needs to be placed on the bonding edge, it is difficult to attach the conductive connectors 3. Therefore, it is only necessary to provide the conductive connectors 3 on the conductive edge, and the bonding edge does not need to be provided with conductive connectors 3, thereby forming a Faraday cage structure with an opening at the bonding edge.

[0064] Furthermore, the upper, left, and right edges of the conductive film 102 are all conductive edges, and the lower edge of the conductive film 102 is a bonding edge. By placing the bonding edge at the lower edge of the conductive film 102, the opening of the Faraday cage structure faces downwards, minimizing the adverse effects caused by the opening.

[0065] The EMI tape at the top edge is referred to as "top edge EMI tape 3a", the EMI tape at the left edge is referred to as "left edge EMI tape 3b", and the EMI tape at the right edge is referred to as "right edge EMI tape 3c".

[0066] The upper edge of the EMI tape 3a extends from the left end of the upper edge of both the conductive film 102 and the conductive plate 2 to the right end of the upper edge of both, so as to completely cover the upper opening of both.

[0067] The EMI tape 3b extends from the upper end of the left edge of both the conductive film 102 and the conductive plate 2 to the lower end of the left edge of both, so as to completely cover the left-side openings of both.

[0068] The EMI tape 3c extends from the upper end of the right edge of both the conductive film 102 and the conductive plate 2 to the lower end of the right edge of both, so as to completely cover the right-side openings of both.

[0069] In summary, the electrostatic shielded display device provided in this embodiment has the following advantages:

[0070] ① The conductive film 102, the conductive connector 3 and the conductive plate 2 are combined to form a Faraday cage structure, which shields the external changing electromagnetic field and protects the panel body 101 from damage caused by electrostatic discharge (ESD) induced current.

[0071] ② Reusing the ITO film as the conductive film 102 avoids the need for an additional conductive layer, saving material costs and internal space of the equipment.

[0072] ③ The backlight sheet metal part is reused as the conductive plate 2, eliminating the need to add a metal shielding plate and saving processing and assembly costs.

[0073] ④ Use continuously extending strip-shaped conductive connectors 3 (such as EMI tape) to eliminate electromagnetic leakage paths, enhance shielding integrity and durability, and suppress ESD transient currents.

[0074] ⑤ Only set the conductive connector 3 on the conductive edge and make the opening of the binding edge face downward to reduce the adverse effects of the Faraday cage opening and significantly suppress the internal transient current in ESD test.

[0075] Finally, it should be noted that although the above embodiments have been described in the text and drawings of this application, this should not limit the scope of patent protection of this application. Any technical solutions that are based on the essential concept of this application and utilize the content described in the text and drawings of this application, resulting in equivalent structural or procedural substitutions or modifications, as well as the direct or indirect application of the technical solutions of the above embodiments to other related technical fields, are all included within the scope of patent protection of this application.

Claims

1. An electrostatic shielded display device, characterized in that, include: Display panel (1), the display panel (1) includes panel body (101) and conductive film (102) attached to the front position of panel body (101). Conductive plate (2), the conductive plate (2) is located on the back side of the panel body (101); A plurality of conductive connectors (3), one end of each conductive connector (3) is connected to the edge of the conductive film (102) and the other end is connected to the edge of the conductive plate (2); The conductive film (102), each of the conductive connectors (3), and the conductive plate (2) together constitute a Faraday cage structure that accommodates the panel body (101) to shield the changing electromagnetic field outside the panel body (101).

2. The electrostatic shielded display device according to claim 1, characterized in that, The conductive film (102) is an ITO film.

3. The electrostatic shielded display device according to claim 1, characterized in that, The conductive plate (2) is a backlight sheet metal part used to support the display panel (1).

4. The electrostatic shielded display device according to claim 1, characterized in that, The conductive connector (3) is a continuously extending strip structure that extends from one end of the conductive film (102) and the conductive plate (2) to the other end of the conductive film (102) and the conductive plate (2).

5. The electrostatic shielded display device according to claim 4, characterized in that, The conductive connector (3) is EMI tape.

6. The electrostatic shielded display device according to claim 4, characterized in that, The conductive film (102) is a conductive copper foil, and both the conductive film (102) and the conductive plate (2) are connected to the conductive copper foil by conductive adhesive.

7. The electrostatic shielded display device according to claim 1, characterized in that, The panel body (101) is provided with an IC chip (1011). The edge of the conductive film (102) includes a conductive edge for connecting to each of the conductive connectors (3) and a bonding edge corresponding to the IC chip (1011), and the conductive connectors (3) are provided only for each of the conductive edges.

8. The electrostatic shielded display device according to claim 7, characterized in that, The upper edge, left edge, and right edge of the conductive film (102) are all conductive edges, and the lower edge of the conductive film (102) is a bonding edge.

9. The electrostatic shielded display device according to claim 1, characterized in that, Also includes: The outer casing (4) has an open cavity, the display panel (1) and the conductive plate (2) are both located in the cavity, and the conductive plate (2) is located on the side of the display panel (1) away from the opening of the cavity.

10. The electrostatic shielded display device according to claim 9, characterized in that, Also includes: Cover frame (5), the cover frame (5) is located at the opening of the outer shell (4) and is used to fix the display panel (1) and the conductive plate (2) in conjunction with the outer shell (4).

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