LCD anti-static device for vehicle heater control buttons

Abstract

The present invention relates to an LCD electrostatic discharge prevention device for a vehicle heater control button. An electrostatic discharge transmission means, formed by applying conductive metal powder to an elastic sponge, is formed on the upper surface of an FPC board equipped with an LCD. By causing the electrostatic discharge transmission means to come into contact with a shield plate, static electricity transferred from the body due to a touch of the LCD cap is absorbed by the shield cover and then transmitted to the electrostatic discharge transmission means. Since the static electricity transmitted to the electrostatic discharge transmission means is removed through an LCD driving terminal equipped with a grounding terminal mounted on the PCB board, it is not necessary to form a shield plate on the shield cover to transmit static electricity to the grounding terminal as in conventional methods. Consequently, the manufacturing cost of the shield cover can be significantly reduced. Furthermore, since a through hole through which the shield plate penetrates the LCD holder is not required as in conventional methods, the manufacturing of the LCD holder can be facilitated. Additionally, regarding the concept of a contact structure, it is difficult to reflect the structure in the operating component, and the difficulty in processing the contact shape due to the small size of the shield can be resolved. Since the electrostatic discharge transmission means is composed by applying conductive metal powder to a sponge, the elastic sponge The electrostatic transmission means is configured such that it can maintain a constant state of contact with the shield plate, thereby increasing the contact area. The electrostatic transmission means forms a guide portion with a movable hole in the central part on the upper surface of a ground connection terminal provided on an FPC board, forms a guide groove communicating with the movable hole on the lower inner side of the guide portion, provides a movable projection fitted into the inner side of the guide groove at the bottom, forms a movable portion that moves up and down along the movable hole on the guide portion, and forms a contact plate that contacts the shield plate on the upper part of the movable portion. By forming a resilient spring that maintains the contact plate in contact with the shield plate through the generated elastic force, the contact plate is configured not only to maintain a constant state of contact due to the elastic force of the resilient spring, but also to remove a maximum amount of static electricity through the ground terminal due to the increased contact area between the shield cover and the contact plate.

Description

Technology Field

[0001] The present invention relates to an LCD electrostatic discharge prevention device for a vehicle heater control button. More specifically, an electrostatic discharge transmission means is formed on the upper surface of a Flexible Printed Circuit Board (FPC) equipped with an LCD by coating conductive metal powder onto an elastic sponge. By causing the electrostatic discharge transmission means to come into contact with a shield plate, static electricity transferred from the body due to a touch of the LCD cap is absorbed by the shield cover and then transmitted to the electrostatic discharge transmission means. Since the static electricity transmitted to the electrostatic discharge transmission means is removed through an LCD driving terminal equipped with a ground terminal mounted on the PCB board, it is not necessary to form a shield plate on the shield cover to transmit static electricity to the ground terminal as in conventional methods. Consequently, the manufacturing cost of the shield cover can be significantly reduced. Furthermore, since a through hole through which the shield plate passes is not formed in the LCD holder as in conventional methods, the manufacturing of the LCD holder can be facilitated. Additionally, regarding the concept of a contact structure, it is difficult to reflect the structure in the operating component, and the difficulty in processing the contact shape due to the small size of the shield can be resolved. The electrostatic discharge transmission means is conductive on the sponge. The present invention relates to an LCD anti-static device for an electrostatic vehicle heater control button, configured such that by applying metal powder, the electrostatic transmission means can maintain constant contact with the shield plate through an elastic sponge, thereby increasing the contact area. Background Technology

[0003] Generally, an air conditioning panel equipped with a heater control button that allows the air conditioning unit mounted inside the vehicle to be controlled with simple operation is installed.

[0004] Recently, LCDs are being applied to heater control buttons.

[0005] Figures 8 and 9 illustrate a heater control button with a conventional LCD applied.

[0006] As shown in FIG. 6, the heater control button is composed of a PCB board (10), an LCD holder (20) mounted on the PCB board (10), an LCD (30) equipped with an FPC board (Flexible Printed Circuit Board: 31) mounted on the upper surface of the LCD holder (20), a shield cover (40) covering the edge of the LCD (30), and an LCD cap (50) coupled to the LCD holder (20) to cover the shield cover (40).

[0007] A ground terminal (11) is mounted on the upper surface of the PCB board (10), and an LCD driving terminal (12) that contacts the FPC board (31) is mounted on the rear surface of the PCB board (10).

[0008] A shield plate (41) connected to a ground terminal (11) is formed in the longitudinal direction on the lower side of one side of the shield cover (40).

[0009] In the LCD holder (20) to which the above shield cover (40) is attached, a first through hole (21) through which an FPC substrate (31) passes is formed, and a second through hole (22) is formed in the LCD holder (20) spaced apart from the first through hole (21), so that the shield plate (41) passing through the second through hole (22) comes into contact with the ground terminal (11).

[0011] The operating state of the conventional technology formed in this way is explained as follows.

[0012] First, by touching the LCD cap (5), static electricity transferred from the body is absorbed by the shield cover (40), and the static electricity absorbed by the shield cover (40) is transmitted to the ground terminal (11) through the shield plate (41) so that the static electricity absorbed by the shield cover (40) can be removed, thereby preventing the LCD (30) from being damaged by static electricity.

[0013] However, the problem with the conventional LCD anti-static device for vehicle heater control buttons is that the manufacturing cost of the shield cover (40) increases because a shield cover (40) equipped with a shield plate (41) must be manufactured.

[0014] In addition, conventionally, since a first through-hole (21) through which an FPC board (31) passes and a second through-hole (22) through which a shield plate (41) passes must be formed in the LCD holder (20) to which the LCD (30) is mounted, not only is it difficult to manufacture the LCD holder (20), but in the case of a contact structure concept, a problem has arisen in that it is difficult to reflect the structure in the operating part. The problem to be solved

[0016] Accordingly, the present invention, designed to solve the above problems, forms an electrostatic transmission means on the upper surface of an FPC substrate equipped with an LCD by coating conductive metal powder onto an elastic sponge, thereby causing the electrostatic transmission means to come into contact with a shield plate. This allows static electricity transferred from the body due to the touch of the LCD cap to be absorbed by the shield cover and then transferred to the electrostatic transmission means. Since the static electricity transferred to the electrostatic transmission means is removed through an LCD driving terminal equipped with a grounding terminal mounted on the PCB substrate, it is not necessary to form a shield plate on the shield cover to transfer static electricity to the grounding terminal as in the conventional method. Consequently, the manufacturing cost of the shield cover can be significantly reduced, and since a through hole through which the shield plate penetrates the LCD holder is not necessary as in the conventional method, the manufacturing of the LCD holder can be facilitated. Furthermore, regarding the concept of a contact structure, it is difficult to reflect the structure in the operating component, and the difficulty in processing the contact shape due to the small size of the shield can be resolved. Since the electrostatic transmission means is composed by coating conductive metal powder onto a sponge, the electrostatic transmission means is formed by the elastic sponge The electrostatic transmission means can maintain a state of constant contact with the shield plate while increasing the contact area, and the electrostatic transmission means forms a guide portion having a movable hole in the central part on the upper surface of a ground connection terminal provided on an FPC board, forms a guide groove communicating with the movable hole on the lower inner side of the guide portion, has a movable projection fitted into the inner side of the guide groove provided at the bottom, forms a movable portion that moves up and down along the movable hole on the guide portion, and forms a contact plate that contacts the shield plate on the upper part of the movable portion, and forms a spring that allows the contact plate to maintain a state of contact with the shield plate by means of the generated elastic force.The purpose is to provide an LCD anti-static device for a vehicle heater control button, configured such that the contact plate can not only maintain a constant contact state due to the elastic force of a spring, but also remove the maximum amount of static electricity through the grounding terminal by increasing the contact area between the shield cover and the contact plate. means of solving the problem

[0018] The present invention for achieving the above objective is,

[0019] An LCD holder mounted on a PCB board;

[0020] An FPC board is provided, the lower end of which is coupled to a PCB board, and an LCD is mounted on the upper surface of an LCD holder;

[0021] An LCD electrostatic discharge prevention device for a vehicle heater control button comprising a shield cover coupled to surround the edge of the LCD,

[0022] It is characterized by configuring an electrostatic transmission means that contacts the shield cover on the top of the FPC board so that when a user touches the LCD cap, static electricity transferred from the body is absorbed by the shield cover, transmitted to the electrostatic transmission means, and removed through a grounding terminal. Effects of the invention

[0024] According to the present invention, an electrostatic transmission means formed by applying conductive metal powder to an elastic sponge is formed on the upper surface of an FPC substrate equipped with an LCD, and the electrostatic transmission means is made to come into contact with a shield plate. As a result, electrostatic electricity transferred from the body due to the touch of the LCD cap is absorbed by the shield cover and then transferred to the electrostatic transmission means. Since the electrostatic electricity transferred to the electrostatic transmission means is removed through an LCD driving terminal equipped with a ground terminal mounted on the PCB substrate, it is not necessary to form a shield plate that transmits electrostatic electricity to a ground terminal on the shield cover as in the conventional method. Consequently, the manufacturing cost of the shield cover can be significantly reduced, and it is not necessary to form a through hole through which the shield plate passes in the LCD holder as in the conventional method, thereby facilitating the manufacturing of the LCD holder. Furthermore, in the case of a contact structure concept, it is not easy to reflect the structure in the operating part, and the small size of the shield makes it difficult to process the contact shape.

[0025] In addition, since the electrostatic transmission means is configured by applying conductive metal powder to a sponge, the electrostatic transmission means can maintain a state of constant contact with the shield plate due to the elastic sponge, and the effect of increasing the contact area between the shield plate and the electrostatic transmission means can be expected.

[0026] Furthermore, the electrostatic transmission means comprises forming a guide portion having a movable hole in the central part on the upper surface of a ground connection terminal provided on an FPC board, forming a guide groove communicating with the movable hole on the lower inner side of the guide portion, and having a movable projection fitted into the inner side of the guide groove provided at the bottom, forming a movable portion that moves up and down along the movable hole on the guide portion, and forming a contact plate that contacts the shield plate on the upper side of the movable portion, and forming a resilient spring that maintains the contact plate in contact with the shield plate by means of the generated elastic force, thereby allowing the contact plate to always maintain a contact state by the elastic force of the resilient spring, and also enabling the maximum possible amount of electrostatic charge to be removed through the ground terminal due to the increased contact area between the shield cover and the contact plate. Brief explanation of the drawing

[0028] FIG. 1 is an exploded perspective view of an LCD anti-static device for a vehicle heater control button according to the present invention. FIG. 2 is a combined cross-sectional view of the LCD anti-static device of the vehicle heater control button of the present invention. FIG. 3 is a drawing illustrating that an electrostatic transfer means is formed on an FPC substrate of the present invention. FIGS. 4 and FIGS. 5 are drawings of the actual product of the LCD anti-static device for a vehicle heater control button according to the present invention. FIG. 6 is a drawing illustrating another embodiment of the LCD anti-static device of a vehicle heater control button according to the present invention. FIG. 7 is an operating state diagram of another embodiment of the LCD anti-static device for a vehicle heater control button of the present invention. FIG. 8 is a cross-sectional view illustrating an LCD anti-static device for a conventional vehicle heater control button. FIG. 9 is a perspective view illustrating a shield cover equipped with a conventional shield plate. Specific details for implementing the invention

[0029] Hereinafter, a preferred embodiment of the present invention will be described using the attached FIGS. 1 to 7.

[0030] First, prior to describing the present invention, the same reference numerals are used for components identical to those in the prior art, so the description of duplicate reference numerals will be omitted.

[0031] According to the drawings above, the present invention is,

[0032] An LCD holder (20) mounted on a PCB board (10);

[0033] An FPC board (Flexible Printed Circuit Board: 100) is provided, the lower end of which is combined with a PCB board (Printed Circuit Board: 10), and an LCD (30) is mounted on the upper surface of an LCD holder (20);

[0034] An LCD anti-static device for a vehicle heater control button comprising a shield cover (140) that is coupled to surround the edge of the LCD (30),

[0035] The electrostatic transmission means (130) that contacts the shield cover (140) is configured on the upper side of the FPC board (100), so that when the user touches the LCD cap (50), the electrostatic charge transferred from the body is absorbed by the shield cover (140), then transferred to the electrostatic transmission means (130) and removed through the ground terminal (11).

[0036] And the above electrostatic transmission means (130) is,

[0037] It is characterized by forming a ground connection terminal (120) on the top of the PFC substrate (100) and mounting it on the upper surface of the ground connection terminal (120).

[0038] And the above electrostatic transmission means (130) is,

[0039] It is characterized by being formed by applying conductive metal powder to an elastic sponge.

[0041] FIG. 1 is an exploded perspective view of an LCD anti-static device for a vehicle heater control button of the present invention, FIG. 2 is a combined cross-sectional view of an LCD anti-static device for a vehicle heater control button of the present invention, and FIG. 3 illustrates an electrostatic transmission means formed on an FPC substrate of the present invention.

[0043] The electrostatic transmission means (130) is formed on the upper side of the FPC board (100) as shown in FIG. 1, so that even if the FPC board (100) is penetrated through the first through hole (21) provided in the LCD holder (20), the electrostatic transmission means (130) comes into contact with the inner upper surface of the shield cover (140) as shown in FIG. 2.

[0044] Since an electrostatic transfer means (130) is formed on the upper side of the FPC board (100) to remove electrostatic charge absorbed by the shield cover (140), it is not necessary to form a shield plate (41) on the shield cover (40) as in the conventional method, and thus a shield cover (140) without a shield plate (41) can be manufactured, thereby reducing the manufacturing cost of the shield plate (41).

[0045] In addition, since it is not necessary to form a second through hole (22) through which the shield plate (41) passes in the LCD holder (20), the manufacturing of the LCD holder (20) can be made easier.

[0046] The electrostatic transmission means (130) is formed on the top of the FPC substrate (100) at a height higher than that of the LCD (30), and the electrostatic transmission means (130) is formed by applying conductive metal powder to a sponge.

[0047] By applying conductive metal powder to the above sponge to form an electrostatic transmission means (130), the electrostatic transmission means (130) can maintain contact with the inner upper surface of the shield cover (140) due to the elastic force of the sponge, and the contact area with the shield cover (140) is increased.

[0048] The above electrostatic transmission means (130) is formed on a ground connection terminal (11) provided on the upper surface of an FPC board (31) as shown in FIG. 3, so that the electrostatic charge transmitted to the ground connection terminal (11) through the electrostatic transmission means (130) is removed through an LCD driving terminal (12) to which the end of the FPC board (100) is connected.

[0049] It is noted that the LCD driving terminal (12) above is equipped with a terminal for removing static electricity, although not shown in the drawing.

[0050] Therefore, when the user touches the LCD cap (50), the static electricity on the body is absorbed by the shield cover (140) and the static electricity transmission means (130) is transmitted.

[0051] The static electricity transmitted by the above-mentioned static electricity transmission means (130) is transmitted to a ground connection terminal (120) provided on the upper surface of the FPC board (100), and the static electricity transmitted to the ground connection terminal (120) is removed through a terminal provided on the LCD driving terminal (12) to which the FPC board (100) is connected, thereby maximally preventing the LCD (30) from being damaged or malfunctioning due to static electricity.

[0053] Meanwhile, FIGS. 6 and 7 illustrate other embodiments of the electrostatic transmission means of the present invention, and the same reference numerals are used for the same components, so the description of duplicate reference numerals will be omitted.

[0054] Another embodiment of the electrostatic transfer means (130) of the present invention is,

[0055] A guide hole (201) is provided in the central part, and a guide portion (200) is formed on the upper surface of the ground connection terminal (120);

[0056] A guide groove (202) formed in the inner lower part of the guide portion (200) so as to be in communication with the guide hole (201);

[0057] A moving projection (212) protruding inwardly into the guide groove (202) is provided at the bottom, and a moving part (210) that moves up and down along the guide hole (201) is provided;

[0058] A contact plate (212) formed on the upper end of the moving part (210) to contact the shield cover (140);

[0059] It is characterized by being composed of a spring (220) formed between the contact plate (212) and the ground connection terminal (120) so that the contact plate (212) can be maintained in a state of contact with the shield cover (140) by means of elastic force.

[0061] The electrostatic transmission means (130) of the present invention forms a resilient spring (220) between a contact plate (212) that contacts the inner upper surface of a shield cover (140) and a ground connection terminal (120), so that the contact plate (212) can always maintain contact with the inner upper surface of the shield cover (140) by means of the elastic force of the resilient spring (220).

[0062] The above contact plate (212) is formed horizontally on the upper part of the moving part (210) that moves up and down.

[0063] The above moving part (210) is configured to move up and down along the guide hole (201) provided in the guide part (200).

[0064] A guide groove (202) communicating with a guide hole (201) is formed in the inner lower portion of the guide portion (200), and a movable projection (211) that is fitted into the inner portion of the guide groove (202) is formed on the lower outer surface of the movable portion (210).

[0065] The guide part (200), moving part (210), contact plate (212), and elastic spring (220) constituting the above electrostatic transmission means (130) are formed of a conductive metal to increase the contact area with the ground connection terminal (120) provided on the FPC board (100).

[0067] The operating state of another embodiment of the present invention combined in this manner is described as follows.

[0068] First, static electricity absorbed by the shield cover (140) due to the touch of the LCD cap (50) is transferred to the contact plate (212) constituting the static electricity transfer means (130), and the static electricity transferred to the contact plate (212) is transferred to the ground connection terminal (120) by means of the moving part (210) and guide part (200) and the elastic spring (220) that are in contact with the ground connection terminal (120).

[0069] The static electricity transmitted to the ground connection terminal (120) is removed through a terminal provided in the LCD driving terminal (12) to which the FPC board (100) is connected. Explanation of the symbols

[0071] 10: PCB board, 11: Ground terminal, 12: LCD driving terminal, 20: LCD holder, 21: First through-hole, 22: Second through-hole, 30: LCD, 31: FPC board, 40: Shield cover, 41: Shield plate, 50: LCD cap, 100: FPC board, 120: Ground connection terminal, 130: Electrostatic transmission means, 140: Shield cover, 200: Guide part, 201: Guide hole, 202: Guide groove, 210: Moving part, 211: Moving projection, 212: Contact plate, 220: Resilient spring,

Claims

Claim 1 An LCD holder (20) mounted on a PCB board (10); an FPC board (Flexible Printed Circuit Board: 100) having a lower end coupled to the PCB board (Printed Circuit Board: 10) and an LCD (30) mounted on the upper surface of the LCD holder (20); An LCD electrostatic discharge prevention device for a vehicle heater control button comprising a shield cover (140) that is coupled to surround the edge of an LCD (30), wherein an electrostatic discharge transmission means (130) that contacts the shield cover (140) is configured on the upper surface of an FPC board (100), so that when a user touches the LCD cap (50), electrostatic discharge transferred from the body is absorbed by the shield cover (140) and then transmitted to the electrostatic discharge transmission means (130) and removed through a ground terminal (11), and wherein the electrostatic discharge transmission means (130) is characterized by having a ground connection terminal (120) formed on the upper surface of the PFC board (100) and being mounted on the upper surface of the ground connection terminal (120). Claim 2 delete Claim 3 delete Claim 4 delete

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