Driving IC (integrated circuit) protection structure of TFT (thin film transistor) liquid crystal screen module

Abstract

The utility model discloses a driving IC (integrated circuit) protection structure of a TFT (thin film transistor) liquid crystal screen module, relates to the technical field of circuit protection, and aims to solve the problems that the driving IC protection of the current TFT liquid crystal screen module is mainly concentrated on a circuit part, and the protection effect is generally achieved by starting a heat dissipation system or entering an overheating protection state after overheating. In the prior art, an overheating protection structure directly acting on a driving IC on a TFT liquid crystal screen module is lacked, the technical problem that the driving IC on the TFT liquid crystal screen module is prone to entering an overheating protection state during long-time work due to the airflow guiding effect of a heat dissipation system acting on the driving IC cannot be solved, and the overheating protection structure comprises a shell, a TFT liquid crystal screen body and a driving IC chip, and the TFT liquid crystal screen body and the driving IC chip are arranged in the shell. And the TFT liquid crystal screen main body is connected with the driving IC chip. According to the utility model, an independent heat dissipation structure is adopted, so that the flowing efficiency of air in the shell can be improved, the heat dissipation effect is improved, and the driving IC chip is prevented from entering an overheat protection state during long-time work.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit protection, and more specifically to a driver IC protection structure of a TFT liquid crystal screen module. Background Art

[0002] The driver IC of the TFT LCD module is a very important part of the LCD. It is responsible for converting the input control signal into a control signal that can be recognized by the data drive circuit (SD) and the scan drive circuit (GD), thereby controlling the display of the LCD.

[0003] Specifically, the driver IC includes a control module that converts control signals (such as DE, HS, and VS) received by the input interface Rx into control signals that can be recognized by the SD and GD. SD control signals include STH, TP, and POL, while GD control signals include STV (frame start pulse signal), CPV, and OE. These control signals, under the action of the driver IC, ensure that the LCD screen can display images correctly.

[0004] At the same time, the driver IC also needs to have some protection structures, such as overvoltage protection, overcurrent protection, overheating protection, etc., to ensure that it will not be damaged under adverse conditions, thereby extending the service life of the LCD screen.

[0005] Currently, driver IC protection for TFT LCD modules primarily focuses on the circuitry. Overheat protection circuits primarily monitor temperature using devices such as thermistors. Overheating typically involves activating a cooling system or entering overheat protection mode. The lack of an overheat protection structure directly targeting the driver IC in the TFT LCD module prevents the cooling system from directing airflow to the driver IC. This makes it difficult to address the airflow guidance effect of the cooling system on the driver IC, leading to the driver IC in the TFT LCD module being susceptible to entering overheat protection mode after prolonged operation. Therefore, we propose a driver IC protection structure for TFT LCD modules. Utility Model Content

[0006] The purpose of the present utility model is to overcome the deficiencies of the prior art, meet actual needs, and provide a driver IC protection structure for a TFT liquid crystal screen module to solve the problem that the current driver IC protection of the TFT liquid crystal screen module is mainly concentrated in the circuit part. After overheating, the heat dissipation system is generally started or the overheat protection state is entered to achieve the protection effect. There is a lack of an overheat protection structure that directly acts on the driver IC on the TFT liquid crystal screen module, and the airflow guidance effect of the heat dissipation system on the driver IC cannot be solved, resulting in the technical problem that the driver IC on the TFT liquid crystal screen module is prone to enter the overheat protection state during long-term operation.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions: a driver IC protection structure for a TFT liquid crystal screen module, comprising a housing and a TFT liquid crystal screen body and a driver IC chip arranged in the housing;

[0008] The TFT liquid crystal screen body is connected to the driver IC chip, and the housing is provided with a forced heat dissipation component for accelerating the flow of air in the housing, and the forced heat dissipation component includes an air scoop and an exhaust component provided in the air scoop;

[0009] The exhaust assembly includes an extension shell and an air duct connected to the extension shell, and axial flow fans are fixedly installed at both ends of the air duct.

[0010] The utility model accelerates the flow rate of air in the shell by forcing the heat dissipation component. When the TFT liquid crystal screen body and the driver IC chip are working, the two axial flow fans accelerate the flow rate of air in the air duct, and cooperate with the extension shell and the wind scoop to directly discharge the air in the shell, thereby improving the flow efficiency of the air in the shell, improving the heat dissipation effect, and preventing the driver IC chip from entering the overheat protection state during long-term operation.

[0011] Preferably, the housing includes a front shell and a rear shell, the front shell and the rear shell are connected, and a plurality of air inlets are equidistantly provided on the top of the front shell, and the extension shell is fixed to the bottom of one side of the rear shell.

[0012] Preferably, both ends of the extension shell are constructed with a card seat, and both sides of the wind scoop are provided with a card slot, and the card seat is installed in the corresponding card slot.

[0013] Preferably, the TFT liquid crystal screen body and the driver IC chip are commonly connected to a working protection circuit and an overheating protection circuit, and the driver IC chip is connected to a management circuit.

[0014] Preferably, the working protection circuit includes an overcurrent protection circuit for overcurrent protection and an overvoltage protection circuit for overvoltage protection, and the overcurrent protection circuit and the overvoltage protection circuit are commonly connected to the TFT liquid crystal screen body and the driver IC chip.

[0015] Preferably, the overheat protection circuit includes a thermistor and a controller, the thermistor is connected to the TFT liquid crystal screen body and the driver IC chip, and the thermistor is connected to the controller to achieve real-time monitoring of temperature changes.

[0016] Preferably, the controller is connected to the axial flow fan to achieve the discharge of hot air.

[0017] Preferably, the management circuit includes a signal receiving circuit for signal reception, a signal processing circuit for signal processing, a power management circuit for power supply management, and a matrix control circuit for display matrix control. The signal receiving circuit, signal processing circuit, power management circuit, and matrix control circuit are all connected to the driver IC chip.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] 1. The utility model accelerates the flow rate of air in the shell by forcing the heat dissipation component. When the TFT LCD screen body and the driver IC chip are working, the two axial flow fans accelerate the flow rate of air in the air duct, and cooperate with the extension shell and the wind scoop to directly discharge the air in the shell, thereby improving the flow efficiency of the air in the shell, improving the heat dissipation effect, and preventing the driver IC chip from entering the overheating protection state during long-term operation.

[0020] 2. The utility model also monitors the temperature changes of the driver IC chip in real time during operation through a thermistor. The temperature changes of the driver IC chip in operation are analyzed by a controller. When the temperature value is greater than a threshold value, the axial flow fan is started by the controller, thereby accelerating the flow efficiency of the air in the shell and discharging the hot air in the shell in real time. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the structure of the utility model in a rear-view state;

[0022] Figure 2 This is a schematic diagram of the utility model in a disassembled state in a front view;

[0023] Figure 3 This is a schematic diagram of the disassembly of the forced heat dissipation component in the present utility model;

[0024] Figure 4 This is a schematic diagram of the structure of the exhaust assembly in the utility model;

[0025] Figure 5 This is a schematic block diagram of the circuit of the present utility model.

[0026] Description of the numbers in the figure:

[0027] 1. TFT LCD screen body; 2. Driver IC chip; 3. Forced heat dissipation component; 301. Air scoop; 302. Card slot; 4. Exhaust component; 401. Extension shell; 402. Air duct; 403. Axial fan; 404. Card holder; 5. Front shell; 6. Rear shell; 7. Overcurrent protection circuit; 8. Overvoltage protection circuit; 9. Thermistor; 10. Controller; 11. Signal receiving circuit; 12. Signal processing circuit; 13. Power management circuit; 14. Matrix control circuit. DETAILED DESCRIPTION

[0028] like Figure 1 、 Figure 2 As shown, the present invention relates to a driver IC protection structure of a TFT liquid crystal screen module, comprising a housing, a TFT liquid crystal screen body 1 and a driver IC chip 2 arranged in the housing;

[0029] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 As shown, in an embodiment of the present utility model, in order to prevent the driver IC chip 2 from entering an overheating protection state during long-term operation, the TFT liquid crystal screen body 1 is connected to the driver IC chip 2, and the shell is provided with a forced heat dissipation component 3 for accelerating the airflow in the shell, the forced heat dissipation component 3 includes a wind scoop 301 and an exhaust component 4 arranged in the wind scoop 301, the exhaust component 4 includes an extension shell 401 and an air duct 402 connected to the extension shell 401, and axial flow fans 403 are fixedly installed at both ends of the air duct 402. The forced heat dissipation component 3 accelerates the flow rate of the air in the shell. When the TFT liquid crystal screen body 1 and the driver IC chip 2 are working, the two axial flow fans 403 accelerate the flow rate of the air in the air duct 402, and cooperate with the extension shell 401 and the wind scoop 301 to directly discharge the air in the shell, thereby improving the flow efficiency of the air in the shell, improving the heat dissipation effect, and preventing the driver IC chip 2 from entering an overheating protection state during long-term operation.

[0030] like Figure 1 、 Figure 2 、 Figure 3 As shown, in an embodiment of the present invention, in order to facilitate disassembly and maintenance, the shell includes a front shell 5 and a rear shell 6, the front shell 5 and the rear shell 6 are connected, and a plurality of air inlets are equidistantly provided at the top of the front shell 5, the extension shell 401 is fixed to the bottom of one side of the rear shell 6, both ends of the extension shell 401 are constructed with a holder 404, and both sides of the wind scoop 301 are provided with a slot 302, the holder 404 is snap-fitted into the corresponding slot 302, by inserting the extension shell 401 into the wind scoop 301, and making the two holders 404 on both sides of the extension shell 401 respectively inserted into the two slots 302 on the wind scoop 301, it can be directly pulled out for disassembly, which is convenient for maintenance.

[0031] like Figure 1 、 Figure 2 、 Figure 4 、 Figure 5As shown, in an embodiment of the present utility model, in order to speed up the flow efficiency of the air in the shell and to discharge the hot air in the shell in real time, the TFT liquid crystal screen body 1 and the driver IC chip 2 are commonly connected with a working protection circuit and an overheating protection circuit, and the driver IC chip 2 is connected with a management circuit, the working protection circuit includes an overcurrent protection circuit 7 for overcurrent protection and an overvoltage protection circuit 8 for overvoltage protection, the overcurrent protection circuit 7 and the overvoltage protection circuit 8 are commonly connected to the TFT liquid crystal screen body 1 and the driver IC chip 2, the overheating protection circuit includes a thermistor 9 and a controller 10, the thermistor 9 is connected to the TFT liquid crystal screen body 1 and the driver IC chip 2, and the thermistor 9 is connected to the controller 10, to realize real-time monitoring of temperature changes, so The controller 10 is connected to the axial flow fan 403 to realize the discharge of hot air. The management circuit includes a signal receiving circuit 11 for signal reception, a signal processing circuit 12 for signal processing, a power management circuit 13 for power supply management, and a matrix control circuit 14 for display matrix control. The signal receiving circuit 11, the signal processing circuit 12, the power management circuit 13, and the matrix control circuit 14 are all connected to the driver IC chip 2. The temperature changes of the driver IC chip 2 during operation are monitored in real time through the thermistor 9. The temperature changes of the driver IC chip 2 during operation are analyzed by the controller 10. When the temperature value is greater than the threshold value, the axial flow fan 403 will be started by the controller 10, thereby accelerating the flow efficiency of the air in the shell and discharging the hot air in the shell in real time.

[0032] Working principle: This embodiment provides a driver IC protection structure for a TFT liquid crystal display module. When in use, the driver IC chip 2 cooperates with the TFT liquid crystal display body 1 to display information, and the signal receiving circuit 11, signal processing circuit 12, power management circuit 13, and matrix control circuit 14 perform signal reception, signal processing, power supply management, and display matrix control on the driver IC chip 2. The overcurrent protection circuit 7 and the overvoltage protection circuit 8 provide overcurrent protection and overvoltage protection for the driver IC chip 2. When the driver IC chip 2 is working, the temperature change of the driver IC chip 2 is monitored in real time by the thermistor 9, and the temperature change of the driver IC chip 2 during operation is analyzed by the controller 10. When the temperature value is greater than the threshold value, the axial flow fan 403 will be started by the controller 10. The two axial flow fans 403 accelerate the flow speed of the air in the air duct 402, and cooperate with the extension shell 401 and the wind scoop 301 to directly discharge the air in the shell, thereby improving the flow efficiency of the air in the shell, improving the heat dissipation effect, and preventing the driver IC chip 2 from entering the overheating protection state during long-term operation.

[0033] The embodiments disclosed in the present invention are preferred embodiments, but are not limited to them. Ordinary technicians in this field can easily understand the spirit of the present invention based on the above embodiments and make different extensions and changes. As long as they do not deviate from the spirit of the present invention, they are all within the scope of protection of the present invention.

Claims

1. A driver IC protection structure for a TFT liquid crystal display module, characterized in that: It comprises a housing, a TFT liquid crystal screen main body (1) and a driver IC chip (2) arranged in the housing; The TFT liquid crystal screen body (1) is connected to the driver IC chip (2); the housing is provided with a forced heat dissipation component (3) for accelerating the flow of air in the housing; the forced heat dissipation component (3) includes an air scoop (301) and an exhaust component (4) provided in the air scoop (301); The exhaust assembly (4) comprises an extension shell (401) and an air duct (402) connected to the extension shell (401), and axial flow fans (403) are fixedly installed at both ends of the air duct (402).

2. The driver IC protection structure of the TFT liquid crystal display module according to claim 1, characterized in that: The housing comprises a front housing (5) and a rear housing (6), the front housing (5) and the rear housing (6) being connected, and a plurality of air inlets being equidistantly provided at the top end of the front housing (5), and the extension shell (401) being fixedly arranged at the bottom end of one side of the rear housing (6).

3. The driver IC protection structure of the TFT liquid crystal display module according to claim 1, characterized in that: Both ends of the extension shell (401) are constructed with a card seat (404), and both sides of the wind scoop (301) are provided with a card slot (302), and the card seat (404) is card-mounted in the corresponding card slot (302).

4. The driver IC protection structure of the TFT liquid crystal display module according to claim 1, characterized in that: The TFT liquid crystal screen main body (1) and the driver IC chip (2) are commonly connected to a working protection circuit and an overheating protection circuit, and the driver IC chip (2) is connected to a management circuit.

5. The driver IC protection structure of the TFT liquid crystal display module according to claim 4, characterized in that: The working protection circuit comprises an overcurrent protection circuit (7) for overcurrent protection and an overvoltage protection circuit (8) for overvoltage protection. The overcurrent protection circuit (7) and the overvoltage protection circuit (8) are commonly connected to the TFT liquid crystal screen body (1) and the driver IC chip (2).

6. The driver IC protection structure of the TFT liquid crystal display module according to claim 4, characterized in that: The overheat protection circuit comprises a thermistor (9) and a controller (10), wherein the thermistor (9) is connected to the TFT liquid crystal screen body (1) and the driver IC chip (2), and the thermistor (9) is connected to the controller (10), thereby realizing real-time monitoring of temperature changes.

7. The driver IC protection structure of the TFT liquid crystal display module according to claim 6, characterized in that: The controller (10) is connected to the axial flow fan (403) to realize the discharge of hot air.

8. The driver IC protection structure of the TFT liquid crystal display module according to claim 4, characterized in that: The management circuit comprises a signal receiving circuit (11) for signal reception, a signal processing circuit (12) for signal processing, a power management circuit (13) for power supply management, and a matrix control circuit (14) for display matrix control. The signal receiving circuit (11), signal processing circuit (12), power management circuit (13), and matrix control circuit (14) are all connected to the driver IC chip (2).

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