Low-temperature-resistant liquid crystal display module

Abstract

The utility model provides a low-temperature-resistant liquid crystal display module, and belongs to the technical field of liquid crystal display modules. Comprising a circuit board and a liquid crystal display screen electrically connected to the circuit board, the liquid crystal display screen is fixed to the circuit board through a fixing frame, each heating assembly comprises a plurality of heating parts, the heating parts are distributed on the side face of the fixing frame and electrically connected with the circuit board through wires, and the heating parts are electrically connected with the circuit board through wires. And the bottoms of the plurality of electric heating plates are attached to the circuit board. By arranging the heating piece, when the environment temperature is low, the heating piece is started, and the fixing frame is heated through the heating piece, so that the liquid crystal display screen is heated, the situation that the movement speed of liquid crystal molecules is reduced after the temperature of the liquid crystal display screen is too low is avoided, and normal use of the liquid crystal display screen is guaranteed; abnormality or temporary failure of the liquid crystal display screen is avoided, and the use stability of the liquid crystal display screen when the environment temperature is low is improved.

Description

Technical Field

[0001] This utility model relates to the field of liquid crystal display module technology, and in particular to a low-temperature resistant liquid crystal display module. Background Technology

[0002] A liquid crystal display module is a display component that integrates a liquid crystal display panel, a driving circuit, a backlight, a polarizer, and other components. It displays images and text by controlling the arrangement of liquid crystal molecules to adjust the light transmittance. The driving circuit transmits electrical signals to control the pixels, the backlight provides illumination, and the polarizer filters the light. It is widely used in various electronic devices.

[0003] When the ambient temperature is low, the movement speed of liquid crystal molecules in the liquid crystal display module slows down, resulting in a longer response time. This can cause ghosting and stuttering in the image. In addition, the viscosity of the liquid crystal material increases, the light transmittance decreases, the screen brightness decreases, and the color contrast deteriorates. Low temperature may also reduce the luminous efficiency of the backlight, further affecting the display effect. Extreme low temperatures may even cause abnormal liquid crystal molecule arrangement, resulting in abnormal screen display or temporary failure. There is a need for further optimization of the low temperature resistance of liquid crystal display modules. Therefore, this application provides a low temperature resistant liquid crystal display module to meet the needs. Summary of the Invention

[0004] This invention provides a low-temperature resistant liquid crystal display module to solve the problem of abnormal display or temporary failure of the liquid crystal display module when the ambient temperature is low.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0006] A low-temperature resistant liquid crystal display module includes a circuit board and a liquid crystal display screen electrically connected to the circuit board, wherein the liquid crystal display screen is fixed to the circuit board by a fixing frame, and further includes:

[0007] Two sets of heating components, each set of heating components includes several heating elements, which are distributed on the side of the fixed frame. The heating elements are electrically connected to the circuit board through wires, and the bottom of the heating plates are attached to the circuit board.

[0008] Preferably, the top of the heating element has an inclined surface, a guide plate is fixed to the heating element at the inclined surface, the bottom of the guide plate is attached to the surface of the circuit board, a through hole is opened near the circuit board on the guide plate, a blower is fixed on the guide plate, the air outlet of the blower is connected to the through hole, and the blower is electrically connected to the circuit board through a wire.

[0009] Preferably, the top of the guide plate is provided with a horizontal part, which is located above the fixed frame.

[0010] Preferably, the plurality of heating elements are arranged at equal intervals.

[0011] Preferably, the heating element is a heating plate.

[0012] Compared with the prior art, this utility model has at least the following beneficial effects:

[0013] In the above solution, by setting up a heating element, when the ambient temperature is low, the heating element is activated to heat the fixed frame, thereby heating the LCD screen. This prevents the liquid crystal molecules from slowing down due to low screen temperature, ensuring the normal use of the LCD screen, preventing abnormalities or temporary failures, and improving the stability of the LCD screen when used in low ambient temperatures.

[0014] By incorporating inclined surfaces, guide plates, through holes, and a blower, when the ambient temperature is low, the blower and heating elements are activated. While the heating elements heat the sides of the LCD screen, the airflow from the blower enters between the heating elements through the through holes. Through heat exchange with the heating elements, the airflow is heated. The heated airflow is then guided by the guide plate and blown out from the top of the guide plate. A portion of the airflow passes over the top of the LCD screen, transferring heat to the top of the screen, achieving comprehensive heating and further improving the LCD screen's low-temperature resistance. When the ambient temperature is high, the heating elements are not activated and act as heat dissipation fins. The heat from the LCD screen is transferred to the heating elements, increasing the contact area with the air and thus improving the LCD screen's heat dissipation capacity. Furthermore, the airflow from the blower carries away heat from the heating elements, accelerating the cooling of the LCD screen. Additionally, the airflow blowing onto the LCD screen also provides comprehensive heat dissipation to the top of the screen, preventing overheating and ensuring optimal performance.

[0015] By incorporating a horizontal section, when the ambient temperature is low, the airflow blowing from the top of the guide plate is guided by the horizontal section, allowing more airflow to contact the top of the LCD screen, further enhancing the heating capacity of the LCD screen and thus further strengthening the LCD screen's low-temperature resistance. When the ambient temperature is high, the horizontal section can also allow more airflow to blow onto the surface of the LCD screen, accelerating the heat dissipation of the LCD screen. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a cross-sectional view of the liquid crystal display screen of this utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the guide plate of this utility model;

[0019] Figure 4 This is a schematic diagram of the heating element structure of this utility model;

[0020] Figure 5 This is a schematic diagram of the horizontal part of the present invention.

[0021] In the diagram: 1. Circuit board; 2. LCD screen; 3. Fixing frame; 4. Heating component; 5. Heating element; 6. Guide plate; 7. Through hole; 8. Blower; 9. Horizontal section; 10. Sloping surface.

[0022] As shown in the figure, specific structures and devices are marked in the figure to clearly illustrate the structure of the embodiments of this utility model. However, this is only for illustrative purposes and is not intended to limit this utility model to the specific structure, device and environment. According to specific needs, those skilled in the art can adjust or modify these devices and environments, and such adjustments or modifications are still included in the scope of the appended claims. Detailed Implementation

[0023] The low-temperature resistant liquid crystal display module provided by this utility model will be described in detail below with reference to the accompanying drawings and specific embodiments. It should also be noted that, to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art can use other alternative methods to implement some known technologies; moreover, the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit this utility model.

[0024] like Figures 1-5 As shown, an embodiment of this utility model provides a low-temperature resistant liquid crystal display module, including a circuit board 1 and a liquid crystal display screen 2 electrically connected to the circuit board 1. The liquid crystal display screen 2 is fixed to the circuit board 1 by a fixing frame 3, and further includes:

[0025] Two sets of heating components 4, each including several heating elements 5, are distributed on the sides of the fixed frame 3. These heating elements 5 are electrically connected to the circuit board 1 via wires. The bottoms of several heating plates are attached to the circuit board 1. In low-temperature environments, the heating elements 5 in the two sets of heating components 4 obtain power through electrical connection to the circuit board 1 and start working. With their bottoms attached to the circuit board 1 and their sides surrounding the fixed frame 3, they can quickly transfer heat to the fixed frame 3 and the LCD screen 2 via thermal conduction, effectively increasing the overall temperature of the module and preventing the LCD screen 2 from experiencing slowed liquid crystal molecule movement and response delays due to low temperatures, thus ensuring normal display. In high-temperature environments, the heating elements 5 stop heating and, with their large surface area, act as heat dissipation fins, absorbing the heat generated by the LCD screen 2 and the circuit board 1 and dissipating it into the air, helping to cool the module.

[0026] like Figures 1-5As shown, in this embodiment, the top of the heating element 5 is provided with an inclined surface 10. A guide plate 6 is fixed to the heating element 5 at the inclined surface 10. The bottom of the guide plate 6 is attached to the surface of the circuit board 1. A through hole 7 is provided on the guide plate 6 near the circuit board 1. A blower 8 is fixed on the guide plate 6. The air outlet of the blower 8 is connected to the through hole 7. The blower 8 is electrically connected to the circuit board 1 through a wire. In a low-temperature environment, after the blower 8 is started, the airflow enters through the through hole 7 and fully contacts the inclined surface 10 at the top of the heating element 5 for heat exchange. The heated airflow flows down the inclined surface 10... The upward flow guided by the guide plate 6 achieves efficient heating and guidance of the airflow, enabling the hot airflow to be precisely blown onto the LCD screen 2 for three-dimensional heating. In high-temperature environments, the airflow generated by the blower 8 can quickly remove the heat from the surface of the heating element 5, accelerating module heat dissipation. At the same time, the airflow directly acts on the LCD screen 2, enhancing the heat dissipation effect. The end of the guide plate 6 is provided with a protrusion, which is connected to the heating element 5 at both ends, so that the guide plate 6 forms a closed space on one side of the heating element 5, allowing the airflow to flow better from the top of the guide plate 6.

[0027] like Figure 5 As shown in this embodiment, a horizontal part 9 is provided on the top of the guide plate 6. The horizontal part 9 is located above the fixed frame 3. In low-temperature environments, the horizontal part 9 on the top of the guide plate 6 can change the direction of the hot airflow, guide more hot airflow to evenly cover the top of the LCD screen 2, prolong the contact time between the hot airflow and the screen, improve the heat transfer efficiency, enhance the heating effect, and further improve the low-temperature resistance of the LCD screen 2. In high-temperature environments, the horizontal part 9 can better guide the airflow blown by the blower 8 to the surface of the LCD screen 2, increase the airflow coverage area, accelerate the heat dissipation speed, and ensure that the screen operates stably at high temperatures.

[0028] like Figure 4 As shown in this embodiment, several heating elements 5 are arranged at equal intervals. The heating elements 5 arranged at equal intervals can provide a uniform heat distribution for the fixed frame 3 and the liquid crystal display screen 2 in a low-temperature environment, avoid local overheating or insufficient heating, ensure that the entire liquid crystal display module is heated evenly, and stably increase the module temperature. When acting as heat dissipation fins in a high-temperature environment, the evenly distributed heating elements 5 can also make the heat generated by the liquid crystal display screen 2 and the circuit board 1 evenly dissipate into the air, improving the uniformity and effectiveness of heat dissipation.

[0029] like Figure 4As shown in this embodiment, the heating element 5 is a heating plate. As a heating element 5, the heating plate has stable heating performance and a large heat dissipation area. In low-temperature environments, it can quickly generate and transfer heat, providing reliable heating protection for the liquid crystal display module. In high-temperature environments, its large heat dissipation area helps to efficiently absorb and dissipate the heat generated by the liquid crystal display screen 2 and the circuit board 1, ensuring that the display module works stably in different temperature environments.

[0030] Working principle: When the ambient temperature is low, the circuit board 1 is powered on and the heating element 5 in the two sets of heating components 4 is activated. The bottom of the heating element 5 is attached to the circuit board 1 and the side is surrounded by the fixed frame 3. The fixed frame 3 and the side of the LCD screen 2 are heated by heat conduction. At the same time, the blower 8 is started. The airflow blown out enters between the heating elements 5 through the through holes 7 on the guide plate 6 and contacts the heating elements 5 to exchange heat. The heated airflow flows upward along the guide plate 6 and is guided by the top horizontal part 9 to blow evenly to the top of the LCD screen 2, thereby heating the LCD screen 2 and slowing down the decrease in the movement speed of liquid crystal molecules caused by low temperature, thus ensuring normal display.

[0031] When the ambient temperature is high, the heating element 5 stops working and is used as a heat dissipation fin. The heat generated by the LCD screen 2 is conducted to the heating element 5, increasing the contact area with the air to assist in heat dissipation. The blower 8 continues to run, and the airflow blown out carries away the heat on the surface of the heating element 5, accelerating heat dissipation. At the same time, the airflow blows directly onto the top of the LCD screen 2 and is guided by the horizontal part 9 of the guide plate 6, so that more airflow covers the surface of the screen, accelerating the cooling speed of the LCD screen 2 and avoiding the impact of high temperature on display performance.

[0032] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A low-temperature resistant liquid crystal display module, comprising a circuit board (1) and a liquid crystal display screen (2) electrically connected to the circuit board (1), wherein the liquid crystal display screen (2) is fixed to the circuit board (1) by a fixing frame (3), characterized in that, Also includes: Two sets of heating components (4), each set of heating components (4) includes several heating elements (5), several heating elements (5) are distributed on the side of the fixed frame (3), several heating elements (5) are electrically connected to the circuit board (1) through wires, and the bottom of several heating plates are attached to the circuit board (1).

2. The low-temperature resistant liquid crystal display module according to claim 1, characterized in that, The top of the heating element (5) is provided with a slope (10), and a guide plate (6) is fixed on the slope (10). The bottom of the guide plate (6) is attached to the surface of the circuit board (1). A through hole (7) is provided on the guide plate (6) near the circuit board (1). A blower (8) is fixed on the guide plate (6). The air outlet of the blower (8) is connected to the through hole (7). The blower (8) is electrically connected to the circuit board (1) through a wire.

3. The low-temperature resistant liquid crystal display module according to claim 2, characterized in that, The top of the guide plate (6) is provided with a horizontal part (9), which is located above the fixed frame (3).

4. The low-temperature resistant liquid crystal display module according to claim 1, characterized in that, Several of the heating elements (5) are arranged at the same intervals.

5. The low-temperature resistant liquid crystal display module according to claim 1, characterized in that, The heating element (5) is a heating plate.

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