Anti-disassembly touch display screen

Abstract

The utility model relates to an anti-disassembly touch display screen which solves the problems that an existing display screen cannot recognize whether a screen of a whole machine is disassembled or not, and safety is low. Comprising a display screen body, a panel and a touch panel, a circle of first conductive film is arranged at the joint of the panel and the display screen body, the first conductive film is electrically connected with a control mainboard, a circle of second conductive film is arranged at the joint of the panel and the touch panel, and the second conductive film is electrically connected with the control mainboard. When the screen is lighted up for the first time, the control mainboard tests, calculates and stores impedance information of the first conductive film and the second conductive film, when the screen is lighted up every time, the control mainboard firstly tests and calculates the impedance information of the first conductive film and the second conductive film, when the display screen is disassembled, the first conductive film and the second conductive film can be damaged, and the first conductive film and the second conductive film cannot be damaged. And when the impedance information is inconsistent with the information measured for the first time, the display screen cannot be lightened, so that the display screen is prevented from being disassembled, and the safety is high.

Description

Technical Field

[0001] The utility model relates to the field of electronic products, and particularly relates to an anti-disassembly touch display screen. Background Art

[0002] With the development of liquid crystal display, the industry has more and more and higher requirements for liquid crystal screens. Especially in new application fields such as POS machines, cash dispensers, intelligent locks and other security-related fields, the requirements for the security and confidentiality of display screens are very high.

[0003] In order to meet the increasingly stringent functional requirements, the anti-disassembly of touch display screens, this functional requirement related to the safety of the whole machine, becomes very important. The existing liquid crystal display touch modules cannot identify whether the screen of the whole machine is original, whether the parts have been replaced, and whether it has been violently disassembled. As long as the correct power supply and signal are input, it can be normally lit, without any security. Content of the Utility Model

[0004] The purpose of the utility model is to solve the problem that the existing display screen cannot identify whether the screen of the whole machine has been disassembled and has low security.

[0005] The anti-disassembly touch display screen of the utility model includes a display screen main body, a panel arranged on the display screen main body, and a touch panel arranged on the panel. A circle of first conductive film is arranged at the connection between the panel and the display screen main body. The first conductive film is electrically connected to the control main board. A circle of second conductive film is arranged at the connection between the panel and the touch panel. The second conductive film is electrically connected to the control main board.

[0006] The technical solutions for further limiting the utility model include:

[0007] The first conductive film is electrically connected to the control main board through a first resistor.

[0008] The second conductive film is electrically connected to the control main board through a second resistor.

[0009] The first conductive film is electrically connected to the control IC of the control main board.

[0010] The second conductive film is electrically connected to the control IC of the control main board.

[0011] The first conductive film is made of conductive glue.

[0012] The second conductive film is made of conductive glue.

[0013] The first conductive film is provided with first lead-out contacts, and the second conductive film is provided with second lead-out contacts.

[0014] Through the above technical solution, the beneficial effects of the present utility model are as follows: The anti-disassembly touch display screen of the present utility model includes a display screen main body, a panel provided on the display screen main body, and a touch panel provided on the panel. A first conductive film is provided around the connection between the panel and the display screen main body, and the first conductive film is electrically connected to the control main board. A second conductive film is provided around the connection between the panel and the touch panel, and the second conductive film is electrically connected to the control main board. When the screen is lit for the first time, the control main board tests and calculates the impedance information of the first conductive film and the second conductive film and stores it. Each time the screen is lit, the control main board first tests and calculates the impedance information of the first conductive film and the second conductive film. When the display screen is disassembled, the first conductive film and the second conductive film will be damaged, thus affecting the impedance information of the first conductive film and the second conductive film. When it is inconsistent with the information measured for the first time, the display screen cannot be lit, thereby preventing the display screen from being disassembled and having high safety. Description of the Drawings

[0015] Figure 1 It is a schematic structural diagram of an anti-disassembly touch display screen of the present utility model. Detailed Embodiments

[0016] The structure of the present utility model will be further described below with reference to the drawings.

[0017] Refer to Figure 1, the anti-disassembly touch display screen of the present utility model includes a display screen main body 1, a panel 2 provided on the display screen main body, and a touch panel 3 provided on the panel. A first conductive film 4 is provided around the connection between the panel and the display screen main body, and the first conductive film is electrically connected to the control main board 5. A second conductive film 6 is provided around the connection between the panel and the touch panel, and the second conductive film is electrically connected to the control main board. In this embodiment, the first conductive film is made of conductive glue, and the second conductive film is made of conductive glue. Specifically, in implementation, the first conductive film and the second conductive film can also be made of other conductive materials such as conductive metal. In this embodiment, the first conductive film is electrically connected to the control main board through a first resistor 7. The second conductive film is electrically connected to the control main board through a second resistor 8. Specifically, in implementation, a first resistor can be connected in series between the first conductive film and the control main board according to the needs of the actual circuit voltage, and a second resistor can be connected in series between the second conductive film and the control main board. In this embodiment, the first conductive film is electrically connected to the control IC of the control main board. The second conductive film is electrically connected to the control IC of the control main board. A first lead contact is provided on the first conductive film and denoted as A, and a second lead contact is provided on the second conductive film and denoted as B. When the screen is lit for the first time during startup, the control IC detects the voltage between the first lead contact of the first conductive film and the contact point of the control IC, thereby calculating the resistance of the first conductive film, and storing the impedance information of the first conductive film into the ID register of the control through the OTP programming method, denoted as ID1 and ID2. Similarly, the resistance of the second conductive film is calculated, and the impedance information of the second conductive film is stored into the ID register of the control through the OTP programming method. Each time the device is powered on subsequently, the control IC first detects the impedance information of the first conductive film and the second conductive film, and compares it with the programmed ID1 and ID2. If they are the same, the screen can be lit normally; otherwise, the screen cannot be lit normally.

[0018] Once the product is disassembled or violently damaged later, the impedance information of the first conductive film and the second conductive film will change, and there will be a difference compared with the pre-programmed ID1 and ID2. Before the product is powered on and used subsequently, the control IC first detects the impedance information of the first conductive film and the second conductive film and compares it with ID1 and ID2. If the comparison result is consistent, the device powers on and displays normally; if the comparison values are different, it is determined that the display has been disassembled. Then, the application environment or scenario of the product is regarded as a dangerous scenario, and the product will not power on and work, greatly improving the security and confidentiality of products involving security and confidentiality.

[0019] Although the specific implementation manners of the present utility model have been described in detail with reference to the accompanying drawings, it should not be construed as a limitation to the protection scope of the present utility model. Within the scope described in the claims, various modifications and deformations that can be made by those skilled in the art without creative efforts still fall within the protection scope of the present utility model.

Claims

1. An anti-disassembly touch display screen, comprising a display screen main body, a panel disposed on the display screen main body, and a touch panel disposed on the panel, wherein: A first conductive film is provided in a circle at the connection between the panel and the display screen body, and the first conductive film is electrically connected to the control main board. A second conductive film is provided in a circle at the connection between the panel and the touch panel, and the second conductive film is electrically connected to the control main board.

2. The anti-disassembly touch display screen according to claim 1, wherein: The first conductive film is electrically connected to the control main board through a first resistor.

3. The anti-disassembly touch display screen according to claim 1, wherein: The second conductive film is electrically connected to the control main board through a second resistor.

4. The anti-disassembly touch display screen according to claim 1, wherein: The first conductive film is electrically connected to the control IC of the control main board.

5. The anti-disassembly touch display screen according to claim 1, wherein: The second conductive film is electrically connected to the control IC of the control main board.

6. The anti-disassembly touch display screen according to claim 1, wherein: The first conductive film is made of conductive glue.

7. The anti-disassembly touch display screen according to claim 1, characterized in that: The second conductive film is made of conductive glue.

8. The anti-disassembly touch display screen according to claim 1, characterized in that: First lead contacts are provided on the first conductive film, and second lead contacts are provided on the second conductive film.

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