COG (Chip On Glass) liquid crystal display equipment, antistatic device thereof and electric energy meter

Abstract

The utility model discloses a COG liquid crystal display device, an antistatic device thereof and an electric energy meter, and relates to the technical field of liquid crystal displays, the antistatic device of the COG liquid crystal display device comprises an electrostatic absorption assembly and an electrostatic discharge assembly; the static electricity absorption assembly is arranged in a non-display area of a liquid crystal setting face of the COG liquid crystal display device and used for absorbing static electricity of the COG liquid crystal display device. The electrostatic discharge assembly is arranged adjacent to an external signal pin of a COG chip in the COG liquid crystal display device, and the electrostatic discharge assembly is connected with the electrostatic absorption assembly and used for discharging static electricity absorbed by the electrostatic absorption assembly. According to the COG liquid crystal display device, the antistatic capacity of the COG liquid crystal display device can be improved, and normal work of the COG liquid crystal display device is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to liquid crystal display technical field especially, relates to a COG liquid crystal display device and its antistatic device, electric energy meter. BACKGROUND

[0002] COG LCD: Chip-on-Glass LCD (Liquid Crystal Display), it is a kind of liquid crystal display technology, under the liquid crystal display technology, driving chip will be directly installed on glass substrate, instead of being connected to PCB (Printed Circuit Board) substrate by wire.

[0003] At present, such electronic products with shell and using COG LCD display technology, namely COG liquid crystal display device, generally exist the problem of poor antistatic ability.The antistatic ability often cannot meet the requirement of standard regulation, thereby leading to its during operation, it is vulnerable to suffer from the interference of static electricity, and leads to equipment unable to work normally. UTILITY MODEL CONTENTS

[0004] The utility model is mainly aimed at providing a kind of antistatic device of COG liquid crystal display device, to improve the antistatic ability of COG liquid crystal display device, to ensure the normal work of COG liquid crystal display device.

[0005] To realize the above-mentioned purpose, the utility model provides a kind of antistatic device of COG liquid crystal display device, comprising:

[0006] Static electricity absorption component, the static electricity absorption component is located in the non-display area of the liquid crystal setting surface of COG liquid crystal display device, for absorbing the static electricity of the COG liquid crystal display device;

[0007] Static electricity discharge component, the static electricity discharge component is adjacent to the external signal pin of COG chip in the COG liquid crystal display device, the static electricity discharge component is connected with the static electricity absorption component, for discharging the static electricity absorbed by the static electricity absorption component.

[0008] In an embodiment, the shape and size of the static electricity absorption component are same with the shape and size of the display area periphery of the liquid crystal setting surface, the static electricity absorption component is attached to the edge of the display area with the display area as center, to be located in the non-display area.

[0009] In an embodiment, the static electricity absorption component is attached to the surface shell cover of liquid crystal display in the COG liquid crystal display device, to be located in the non-display area.

[0010] In an embodiment, the static electricity absorbing component is attached to a liquid crystal support of the liquid crystal display in the COG liquid crystal display device, so as to be arranged in the non-display area.

[0011] In an embodiment, the static electricity absorbing component is a metal sheet.

[0012] In an embodiment, the static electricity discharging component comprises a first static electricity discharging leg and a second static electricity discharging leg.

[0013] The first static electricity discharging leg and the second static electricity discharging leg are respectively arranged on two sides of the external signal leg of the COG chip, and the first static electricity discharging leg and the second static electricity discharging leg are both grounded and connected with the static electricity absorbing component.

[0014] In an embodiment, the anti-static device of the COG liquid crystal display device further comprises a connecting piece arranged on the static electricity discharging component, and the connecting piece is used for connecting the static electricity discharging component and the static electricity absorbing component.

[0015] In an embodiment, the connecting piece is a metal spring.

[0016] In addition, in order to achieve the above object, the utility model provides a COG liquid crystal display device, the COG liquid crystal display device includes device body, liquid crystal display, COG chip and the anti-static device of COG liquid crystal display device as described above.

[0017] The liquid crystal display, the COG chip and the anti-static device are arranged in the device body.

[0018] In addition, in order to achieve the above object, the utility model further provides an electric energy meter, and the electric energy meter comprises the COG liquid crystal display device as described above.

[0019] The utility model provides a kind of anti-static device of COG liquid crystal display device, and the device includes static electricity absorbing component and static electricity discharging component;Static electricity absorbing component is arranged in the non-display area of the liquid crystal setting surface of COG liquid crystal display device, for absorbing the static electricity of COG liquid crystal display device;Static electricity discharging component is adjacent to the external signal leg of COG chip in COG liquid crystal display device, and static electricity discharging component connects static electricity absorbing component, for discharging static electricity absorbed by static electricity absorbing component.

[0020] Therefore, the anti-static device of the COG liquid crystal display device is provided, and the anti-static device is used for absorbing static electricity of the COG liquid crystal display device, and the static electricity absorbed by the anti-static device is discharged through the static electricity discharge component, so that the static interference of the COG liquid crystal display device is reduced or even eliminated, and the anti-static capability of the COG liquid crystal display device is improved, and the normal work of the COG liquid crystal display device is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained according to the structures shown in the drawings without creative labor for those skilled in the art.

[0022] Figure 1 The anti-static device of the COG liquid crystal display device provided by the first embodiment of the present application is shown in the exploded structure diagram.

[0023] Figure 2 When the periphery of the liquid crystal display in the COG liquid crystal display device provided by the first embodiment of the present application is completely covered by the static electricity absorbing component, the structure diagram of the COG liquid crystal display device is shown.

[0024] Figure 3 When the static electricity discharge component provided by the first embodiment of the present application includes the first static electricity discharge foot and the second static electricity discharge foot, the structure diagram of the COG liquid crystal display device is shown.

[0025] Figure 4 The structure diagram of the anti-static device of the COG liquid crystal display device provided by the second embodiment of the present application is shown.

[0026] The purposes, functional features and advantages of the present application will be further illustrated with reference to the embodiments and the drawings.

[0027] Explanation of the drawings:

[0028] 10, static electricity absorbing component; 20, static electricity discharge component; 30, connecting piece; ESD1, first static electricity discharge foot; ESD2, second static electricity discharge foot; S1-S4, external signal foot of COG chip; L1, liquid crystal display; U1, COG chip; 11, watch case upper cover; 12, liquid crystal support. DETAILED DESCRIPTION

[0029] It should be understood that the specific embodiments described herein are merely exemplary and do not limit the present application.

[0030] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0031] It should be noted that the description of "first", "second" and the like in the present application is only for the purpose of description and cannot be understood as indicating or implying the relative importance of the technical features or implicitly indicating the number of the technical features. Therefore, the features with "first", "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the fact that a person skilled in the art can realize it. When the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist and is not within the scope of protection required by the present application.

[0032] COG LCD: Chip-on-Glass LCD is a liquid crystal display technology, under which the driving chip is directly mounted on the glass substrate, instead of being connected to the PCB substrate through wires. This design enables the segment code wiring of the LCD to be completed directly through the LCD glass plate, so that the electronic product with LCD display can be lighter and smaller; and when the LCD display segment code is more, it can also effectively reduce the product cost.

[0033] At present, electronic products such as electric energy meters with shells and using COG LCD display technology, i.e. COG liquid crystal display equipment, generally have poor anti-static ability. The anti-static ability often cannot meet the requirements of the standard, so that it is easy to be disturbed by static electricity during operation, causing damage to the liquid crystal display or COG chip in the COG liquid crystal display equipment, and further causing the equipment to work abnormally.

[0034] For example, in the case that the COG liquid crystal display device uses a spacer transparent glass with a thickness of 1.1 mm to install the COG chip, the anti-static capability of the COG liquid crystal display device in the non-contact state is about 14 kV, while the standard anti-static capability in the non-contact state is usually required to be above 15 kV, thus the anti-static capability of the COG liquid crystal display device does not meet the requirement of the standard. In this case, when the static electricity test of 16 kV is conducted on the upper cover surface above the liquid crystal display of the COG liquid crystal display device, the COG liquid crystal display device will be turned off due to the interference of the static electricity, and after the test is stopped, the COG liquid crystal display device will still maintain the turned-off state until the normal display is conducted after being powered on again; and after the static electricity test of 16 kV is conducted repeatedly for many times, the liquid crystal display or the COG chip in the COG liquid crystal display device is easily damaged due to the long-time interference of the static electricity, at this time, even if being powered on again, the COG liquid crystal display device can not be able to conduct the normal display.

[0035] Based on this, the utility model provides a kind of anti-static device of COG liquid crystal display device, in the first embodiment of the utility model, please refer to Figure 1 , the anti-static device of COG liquid crystal display device can include: static electricity absorption component 10 and static electricity discharge component 20;Static electricity absorption component 10 is located in the non-display area of the liquid crystal setting surface of COG liquid crystal display device, static electricity discharge component 20 is adjacent to the external signal pin of COG chip U1 in COG liquid crystal display device, and static electricity discharge component 20 is connected to static electricity absorption component 10.

[0036] Static electricity absorption component 10 is used to absorb the static electricity of COG liquid crystal display device.

[0037] Static electricity discharge component 20 is used to discharge the static electricity absorbed by static electricity absorption component.

[0038] It should be noted that the liquid crystal setting surface is the surface of the COG liquid crystal display device in which the liquid crystal display L1 is arranged, i.e., the front surface of the COG liquid crystal display device. The area in which the display screen of the liquid crystal display L1 is located in the liquid crystal setting surface is the display area, and the other area is the non-display area. The static electricity absorption component 10 can be a metal sheet, a wire rubber or other devices with static electricity absorption function, and the embodiment does not make specific limitation thereto.

[0039] In actual use, in order to simultaneously consider the low cost and the good electrostatic absorption effect, the metal sheet is usually selected as the electrostatic absorption assembly 10. In addition, in order to ensure the good electrostatic absorption effect, the thickness of the metal sheet needs to be greater than or equal to 0.5 mm, and the metal sheet can adopt a copper foil material with good electrical conductivity and flexibility, so as to enhance the electrostatic absorption capacity and durability thereof. The thicker the metal sheet is, the stronger the electrostatic absorption capacity is, and thus the better the electrostatic absorption effect is. In addition, in order to prolong the service life of the metal sheet, an anti-oxidation coating layer can be added to the surface of the metal sheet, so as to prevent the metal sheet from being oxidized in the long-term use process, and thus the electrostatic absorption capacity and the electrostatic conduction capacity of the metal sheet are affected.

[0040] In a feasible embodiment, in order to ensure that the electrostatic absorption assembly 10 can better absorb the static electricity received by the COG liquid crystal display device, the shape and size of the electrostatic absorption assembly 10 can be set to be the same as the shape and size of the display area periphery of the liquid crystal display surface, and the electrostatic absorption assembly 10 is attached to the edge of the display area with the display area as the center, and is arranged in the non-display area. Thus, it can be ensured that the non-display area can be completely covered by the electrostatic absorption assembly 10, and the periphery of the liquid crystal display L1 in the COG liquid crystal display device can be completely surrounded by the electrostatic absorption assembly 10. The effects of completely covering the non-display area and completely surrounding the periphery of the liquid crystal display L1 can be referred to Figure 2 .

[0041] In addition, it should be noted that the electrostatic discharge assembly 20 can include at least one device with an electrostatic discharge function, which can be an electrostatic discharge pin, an electrostatic discharge device or other devices with an electrostatic discharge function, and the present embodiment does not make specific limitations thereto.

[0042] In actual use, in order to simultaneously consider the low cost and the good electrostatic discharge effect, the electrostatic discharge assembly 20 is usually composed of two electrostatic discharge pins. Thus, in a feasible embodiment, please refer to Figure 3 , the electrostatic discharge assembly 20 can include a first electrostatic discharge pin ESD1 and a second electrostatic discharge pin ESD2. In the figure, S1-S4 are external signal pins of the COG chip U1. The first electrostatic discharge pin ESD1 can be arranged on the left side of the external signal pin S1, and the second electrostatic discharge pin ESD2 can be arranged on the right side of the external signal pin S4. The first electrostatic discharge pin ESD1 and the second electrostatic discharge pin ESD2 are both grounded, and the first electrostatic discharge pin ESD1 and the second electrostatic discharge pin ESD2 are both in contact with the electrostatic absorption assembly 10.

[0043] In order to ensure that the electrostatic discharge foot can quickly discharge static electricity, in actual use, the material of the electrostatic discharge foot can be selected from high-conductivity metals such as copper or silver, and the embodiment is not limited in this regard. The structure of the electrostatic discharge foot can also be selected from structures with a large contact area with the metal sheet, for example, the end of the electrostatic discharge foot can be designed to be flat or have multiple branches, etc., to increase the contact area between the electrostatic discharge foot and the metal sheet. In addition, in order to prolong the service life of the electrostatic discharge foot, a layer of anti-oxidation and corrosion plating such as gold or nickel can also be plated on the surface of the electrostatic discharge foot, and the embodiment is not limited in this regard.

[0044] In addition, when the electrostatic absorption assembly 10 is arranged in the non-display area of the liquid crystal display surface of the COG liquid crystal display device, in one possible implementation, the electrostatic absorption assembly 10 can be arranged in the non-display area of the liquid crystal display surface of the COG liquid crystal display device by adhering to the surface cover 11 of the liquid crystal display L1 in the COG liquid crystal display device. In this case, the height of the top of the electrostatic absorption assembly 10 is consistent with the height of the top of the surface cover 11 of the liquid crystal display L1.

[0045] In addition, the liquid crystal display L1 can be adhered to the surface cover 11 of the liquid crystal display L1 in the COG liquid crystal display device in other ways, and the embodiment is not limited in this regard.

[0046] In another possible implementation, the electrostatic absorption assembly 10 can also be arranged in the non-display area of the liquid crystal display surface of the COG liquid crystal display device by adhering to the liquid crystal support 12 of the liquid crystal display L1 in the COG liquid crystal display device. Since the height of the top of the liquid crystal support 12 to which the electrostatic absorption assembly 10 adheres is generally higher than the height of the top of the surface cover 11 of the liquid crystal display L1, in this case, the height of the top of the electrostatic absorption assembly 10 is generally higher than the height of the top of the surface cover 11 of the liquid crystal display L1.

[0047] In addition, the liquid crystal display L1 can be adhered to the surface cover 11 of the liquid crystal display L1 in the COG liquid crystal display device in other ways, and the embodiment is not limited in this regard.

[0048] The above are only two possible embodiments of the present application for arranging the static electricity absorbing component 10 in the non-display area of the liquid crystal display surface of the COG liquid crystal display device. The present application is not limited to the specific embodiments of arranging the static electricity absorbing component 10 in the non-display area of the liquid crystal display surface of the COG liquid crystal display device.

[0049] The present application provides an anti-static device for a COG liquid crystal display device. The device comprises a static electricity absorbing component 10 and a static electricity discharging component 20. The static electricity absorbing component 10 is arranged in the non-display area of the liquid crystal display surface of the COG liquid crystal display device, and is used to absorb static electricity of the COG liquid crystal display device. The static electricity discharging component 20 is arranged adjacent to the external signal pin of the COG chip U1 in the COG liquid crystal display device. The static electricity discharging component 20 is connected to the static electricity absorbing component 10, and is used to discharge the static electricity absorbed by the static electricity absorbing component 10.

[0050] Therefore, the present application arranges the static electricity absorbing component 10 in the non-display area of the liquid crystal display surface of the COG liquid crystal display device, and arranges the static electricity discharging component 20 adjacent to the external signal pin of the COG chip U1 in the COG liquid crystal display device. The static electricity discharging component 20 is connected to the static electricity absorbing component 10. Thus, when the COG liquid crystal display device is interfered by static electricity, the static electricity absorbing component 10 can absorb the static electricity received by the COG liquid crystal display device, and the static electricity absorbed by the static electricity absorbing component 10 can be discharged by the static electricity discharging component 20. Thus, the static electricity interference received by the COG liquid crystal display device can be reduced or even eliminated, and the anti-static capability of the COG liquid crystal display device is improved, so as to ensure the normal operation of the COG liquid crystal display device.

[0051] Exemplarily, to help understand the principle of improving the anti-static capability of the COG liquid crystal display device after the anti-static device of the present embodiment is used. The above-mentioned example of the anti-static capability of the COG liquid crystal display device being about 14 kV in the non-contact state when the spacer transparent glass with a thickness of 1.1 mm is used to install the COG chip can be continued. In this case, if the anti-static device of the COG liquid crystal display device provided by the present embodiment is arranged on the COG liquid crystal display device, when the static electricity test of 18 kV is conducted on the surface of the upper cover above the liquid crystal display of the COG liquid crystal display device or the periphery of the liquid crystal display, the static electricity interference suffered by the COG liquid crystal display device can be absorbed and discharged by the anti-static device, so that the COG liquid crystal display device can work normally, and thus the liquid crystal display in the COG liquid crystal display device can display normally. Therefore, the COG liquid crystal display device can successfully pass the static electricity test of 18 kV, and the anti-static capability is improved from at least 14 kV to 18 kV, thereby meeting the requirement of the standard for the anti-static capability.

[0052] Based on the above-mentioned first embodiment, the second embodiment of the anti-static device of the COG liquid crystal display device is provided, in which please refer to Figure 4 The anti-static device of the COG liquid crystal display device can further comprise a connecting piece 30 arranged on the static electricity discharging assembly 20, and the connecting piece 30 is used to connect the static electricity discharging assembly 20 and the static electricity absorbing assembly 10.

[0053] It should be noted that the connecting piece 30 can be a metal spring piece, a conductive rubber spring piece or other devices with conductive capability, and the present embodiment does not make specific limitation thereto.

[0054] In the present embodiment, the connecting piece 30 is arranged on the static electricity discharging assembly to connect the static electricity discharging assembly 20 and the static electricity absorbing assembly 10, so as to ensure the close connection of the static electricity discharging assembly 20 and the static electricity absorbing assembly 10, thereby improving the efficiency and stability of the static electricity conduction, and effectively improving the anti-static capability of the COG liquid crystal display device to ensure the normal work of the COG liquid crystal display device.

[0055] The present embodiment further provides a COG liquid crystal display device, which comprises a device body, a liquid crystal display, a COG chip and the anti-static device of the COG liquid crystal display device. The liquid crystal display, the COG chip and the anti-static device are arranged on the device body. The structure of the anti-static device of the COG liquid crystal display device can refer to the above-mentioned embodiments, and will not be described here again.

[0056] In an embodiment, the COG liquid crystal display device can be an electric energy meter.

[0057] The COG liquid crystal display device provided by the embodiment can improve the anti-static capability of the COG liquid crystal display device, so as to ensure the normal work of the COG liquid crystal display device.

[0058] The utility model embodiment further provides a kind of electric energy meter, and electric energy meter includes above-mentioned COG liquid crystal display device, the structure of this COG liquid crystal display device can refer to above-mentioned embodiment, and this will not be repeated here.

[0059] The electric energy meter provided by the embodiment can improve the anti-static capability of the COG liquid crystal display device, so as to ensure the normal work of the COG liquid crystal display device. Since the electric energy meter of the embodiment includes all the technical solutions of all the embodiments of the above COG liquid crystal display device, and the technical effects achieved are also exactly the same, they will not be repeated here.

[0060] The above is only the preferred embodiment of the utility model, and does not limit the patent range of the utility model, and equivalent structure or equivalent process transformation using the content of the utility model specification and drawings, or direct or indirect application in other related technical fields, are also included in the patent protection range of the utility model.

Claims

1. An antistatic device for a COG liquid crystal display device, characterized in that, The application relates to a static electricity absorbing component and a static electricity discharging component. The static electricity absorbing component is in the shape and size of the periphery of the display area of the liquid crystal setting surface, and is attached to the edge of the display area and arranged in the non-display area. The static electricity absorbing component is attached to the surface shell cover of the liquid crystal display in the COG liquid crystal display device and arranged in the non-display area.

2. The anti-static device for COG liquid crystal display apparatus according to claim 1, wherein The static electricity absorbing component is attached to the liquid crystal support of the liquid crystal display in the COG liquid crystal display device and arranged in the non-display area.

3. The anti-static device for COG liquid crystal display apparatus according to claim 1, wherein The static electricity absorbing component is a metal sheet.

4. The anti-static device for COG liquid crystal display apparatus according to claim 1, wherein The static electricity discharging component comprises a first static electricity discharging pin and a second static electricity discharging pin.

5. The antistatic device for a COG liquid crystal display apparatus according to any one of claims 1 to 4, wherein The first static electricity discharging pin and the second static electricity discharging pin are respectively arranged on the two sides of the external signal pin of the COG chip, and are grounded and connected with the static electricity absorbing component.

6. The antistatic device for a COG liquid crystal display apparatus according to any one of claims 1 to 4, wherein The anti-static device of the COG liquid crystal display device further comprises a connecting piece arranged on the static electricity discharging component, which is used for connecting the static electricity discharging component and the static electricity absorbing component. The connecting piece is a metal spring.

7. The antistatic device for a COG liquid crystal display device according to any one of claims 1 to 4, wherein The COG liquid crystal display device comprises a device body, a liquid crystal display, a COG chip and the anti-static device of the COG liquid crystal display device.

8. The anti-static device for COG liquid crystal display apparatus according to claim 7, wherein The liquid crystal display, the COG chip and the anti-static device are arranged in the device body.

9. A COG liquid crystal display device, characterized by comprising: The electric energy meter comprises the COG liquid crystal display device. ​ 10. An electric energy meter, characterized by ​

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