Liquid crystal display module with environment self-adaptive energy-saving control function

Abstract

The utility model relates to the technical field of display, in particular to a liquid crystal display module with an environment self-adaptive energy-saving control function, which comprises a liquid crystal display screen, a main control board, an environment sensing unit, an energy-saving control module, a backlight adjusting circuit and a power management unit. The environment sensing unit comprises an illumination sensor and a temperature sensor and is used for acquiring environment parameters; the main control board is connected with the energy-saving control module and dynamically adjusts the brightness and the running state of the display screen according to the environmental parameters; the backlight adjusting circuit adjusts the brightness of the backlight source according to the output signal of the energy-saving control module; the power management unit is used for switching to standby power supply when the main power supply is powered off. Compared with the prior art, the running state of the liquid crystal display module can be automatically adjusted according to the change of the external environment, the display effect is improved, the power consumption is reduced, and the intelligent energy-saving performance and the environment adaptability are good.

Description

Technical Field

[0001] This utility model relates to the technical field of liquid crystal display modules, and in particular to a liquid crystal display module with environmental adaptive energy-saving control function. Background Technology

[0002] With the development of liquid crystal display technology, liquid crystal display modules (LCMs) have been widely used in various fields such as public information dissemination, traffic guidance, smart terminals, and advertising media. Especially in outdoor or semi-open environments, LCD modules have become an important carrier for visual information output. However, existing LCD modules typically use a fixed brightness backlight control method, which cannot automatically adjust according to changes in ambient light intensity. This results in unclear display under strong outdoor light and excessive power consumption in low light, affecting visual experience and energy efficiency.

[0003] In addition, traditional LCD modules still operate at default power when the temperature environment changes drastically. They do not have an effective thermal control mechanism and cannot sense the current lighting or temperature status of the device. Long-term operation will lead to a decrease in display effect, an increase in power consumption, and even affect system stability.

[0004] To adapt to the trends of intelligentization and energy conservation, some existing products have begun to incorporate light sensors or timers. However, most of these products use a single control logic to adjust brightness, lacking deep integration with the main control unit and dynamic power consumption management. Overall control accuracy and adaptability still need improvement. Therefore, there is an urgent need for a liquid crystal display module with environmental awareness, capable of dynamically adjusting its operating status according to external conditions, and equipped with energy-saving control functions. This would improve display performance, extend device lifespan, and reduce energy consumption.

[0005] In view of this, the inventors have specifically designed a liquid crystal display module with environmental adaptive energy-saving control function, which leads to this invention. Utility Model Content

[0006] (a) Technical problems to be solved

[0007] The purpose of this application is to provide a liquid crystal display module with environmental adaptive energy-saving control function, which at least solves the problems of unclear display, high energy consumption and lack of intelligent adjustment mechanism of existing liquid crystal display modules under different ambient brightness / temperature conditions.

[0008] (II) Technical Solution

[0009] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0010] This application provides a liquid crystal display module with environmental adaptive energy-saving control function, comprising:

[0011] LCD screen;

[0012] The main control board controls the driving of the LCD screen;

[0013] An ambient sensing unit, including a light sensor and a temperature sensor, is used to acquire ambient light intensity and temperature data;

[0014] An energy-saving control module is connected to the main control board and adjusts the operating parameters of the LCD screen according to the data obtained by the environmental sensing unit.

[0015] A backlight adjustment circuit, connected to the energy-saving control module, is used to adjust the backlight brightness of the LCD screen;

[0016] The power management unit is used to supply power and maintain the module's standby operation in a low-power state.

[0017] In a further embodiment, the environmental sensing unit is connected to the main control board via I²C communication.

[0018] In a further embodiment, the energy-saving control module includes a PWM dimming chip and a current-driven amplifier, used to provide dimming signals to the backlight adjustment circuit.

[0019] In a further embodiment, the main control board is equipped with a timer module, which triggers the power management unit to enter a low-power standby state when the ambient brightness is continuously lower than a set threshold.

[0020] In a further embodiment, the main control board and the liquid crystal display screen are connected via an LCD driver chip, which is an SPI or RGB interface chip.

[0021] In a further embodiment, a wireless communication module is also included, which is connected to the main control board and is used to upload the real-time data collected by the environmental sensing unit to a remote server.

[0022] In a further embodiment, the wireless communication module is a Wi-Fi or LoRa wireless communication module.

[0023] In a further embodiment, the backlight adjustment circuit includes an LED backlight source and a constant current drive chip, wherein the constant current drive chip receives the pulse width signal output by the PWM dimming chip.

[0024] In a further embodiment, the power management unit includes a main power input port and a backup battery, and automatically switches to backup battery power when the main power is disconnected.

[0025] In a further embodiment, the main control board is a control chip that integrates an ARM Cortex-M series processor.

[0026] (III) Beneficial Effects

[0027] Compared with the prior art, the present invention has the following advantages:

[0028] This invention incorporates an environmental sensing unit, including a light sensor and a temperature sensor, to collect environmental parameters in real time. Combined with an energy-saving control module built into the main control board, it intelligently adjusts the brightness, refresh rate, and power supply mode of the LCD module. Compared to existing LCD modules that use fixed brightness or single-timer control, this invention automatically enters a low-power mode based on changes in the external environment, effectively improving display clarity in outdoor or complex lighting environments and reducing unnecessary energy consumption. Simultaneously, it achieves refined brightness control through a backlight adjustment circuit, enhancing the user's visual experience. When the main power supply is interrupted, the system automatically switches to a backup power supply to ensure stable operation. Therefore, this invention not only possesses stronger environmental adaptability and intelligent energy-saving effects but also features a simple overall structure, easy integration, and suitability for various display application scenarios.

[0029] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0030] in:

[0031] Figure 1 This is a schematic diagram of the structure of the liquid crystal display module of this utility model;

[0032] Figure 2 This is a flowchart illustrating the energy-saving control process of the liquid crystal display module of this utility model.

[0033] Figure 3 This is a schematic diagram of the backlight adjustment circuit structure in this utility model;

[0034] Figure 4 This is a switching logic diagram of the power management module in this utility model;

[0035] Figure 5 This is a diagram showing the electrical connection structure between the environmental sensing unit and the main control board of this utility model.

[0036] Label Explanation:

[0037] 1. LCD screen; 2. Main control board; 3. Ambient sensing unit; 31. Light sensor; 32. Temperature sensor; 4. Energy-saving control module; 41. PWM dimming chip; 42. Current drive amplifier; 5. Backlight adjustment circuit; 6. Power management unit; 61. Main power supply; 62. Backup battery; 7. Wireless communication module. Detailed Implementation

[0038] To make the technical problem to be solved, the technical solution, and the beneficial effects of this utility model clearer and more understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0039] like Figure 1 As shown, this utility model provides a liquid crystal display module with environmental adaptive energy-saving control function, which mainly includes a liquid crystal display screen 1, a main control board 2, an environmental sensing unit 3, an energy-saving control module 4, a backlight adjustment circuit 5, a power management unit 6, and an optional wireless communication module 7. The modules work together through electrical connection or communication protocol.

[0040] The LCD display 1 is a conventional LCD module used to display images, text, video, and other information. The LCD driver chip receives display data from the main control board 2 and performs refresh control. This display is connected to the main control board 2, which uses an integrated embedded control chip, such as an ARM Cortex-M series MCU, which has strong data processing capabilities and low power consumption, and is used to control the overall operation of the module.

[0041] like Figure 5 As shown, to enable the LCD module to adjust its display according to environmental changes, this invention includes an environmental sensing unit 3, comprising a light sensor 31 and a temperature sensor 32. The light sensor 31 senses changes in ambient light intensity, and the temperature sensor 32 detects the temperature level of the environment in which the module is located. Both are connected to the main control board 2 via an I²C communication bus. After collecting light and temperature data, the main control board 2 calls its internal dimming algorithm to analyze the current operating status.

[0042] like Figure 3 As shown, based on environmental sensing data, the energy-saving control module 4 adjusts the operating parameters of the LCD module. The energy-saving control module 4 internally incorporates a PWM dimming chip 41 and a driver amplifier. It receives control commands from the main control board 2 and outputs corresponding pulse width modulation signals to the backlight adjustment circuit 5, adjusting the operating current of the backlight LEDs to achieve linear or multi-level brightness adjustment. The backlight adjustment circuit 5 preferably uses a constant current LED driver chip to ensure uniform and stable display during brightness changes.

[0043] like Figure 4As shown, to further reduce energy consumption, a power management unit 6 is provided in this utility model. The unit includes a main power input port 61 and a backup power module (such as a lithium battery pack or supercapacitor), and power switching control logic is set. When the main power supply is abnormal or fails, the main control board 2 automatically switches to the backup battery 62 for power supply through the power management module to ensure that the module continues to operate or enters a low-power maintenance state, avoiding system black screen or sudden shutdown.

[0044] In a preferred embodiment, the LCD display module is further provided with a wireless communication module 7, which can be a Wi-Fi module or a LoRa module, for uploading environmental data, current operating mode and power consumption information collected by the module to a remote server in real time, so as to realize background visual management and statistical analysis, which is especially suitable for multiple application scenarios such as smart buses, building terminals, and electric vehicle charging piles.

[0045] To improve the compatibility and ease of assembly of the module in different terminal products, the main control board 2, the environmental sensing unit 3, and the energy-saving control module 4 are preferably integrated into a single circuit board for wiring, reducing interference between components and improving system stability. In other embodiments, the environmental sensing unit 3 can also be installed as a plug-in at the edge of the module for easy maintenance and replacement. The backlight adjustment circuit 5 and the LED backlight can be connected to the back of the LCD screen assembly via an FPC cable, using a flexible board + metal shell packaging structure to meet the requirements of module thinness and lightness, suitable for space-constrained scenarios such as portable terminals and automotive screens.

[0046] like Figure 2 As shown, in another embodiment, the main control board 2 can also incorporate a brightness adjustment strategy based on a preset curve. This involves establishing a brightness change model based on historical time periods and light intensity. When the perceived data fluctuations are not significant, the system prioritizes using a curve interpolation algorithm for brightness adjustment, thereby reducing the computational load from real-time data analysis and improving response speed and control accuracy. Furthermore, the energy-saving control module 4 can also incorporate a dynamic temperature response mechanism to automatically limit the backlight current peak in high-temperature environments, preventing LED aging or burnout due to insufficient heat dissipation and enhancing the long-term safety of the module's operation.

[0047] To enhance the module's adaptability to outdoor or high-dust, high-humidity environments, the LCD module housing features a waterproof frame-sealed design, and a light-transmitting dustproof cover is provided around the light sensor 31. This cover is made of high-transmittance acrylic material and has UV anti-aging treatment to ensure stable light absorption by the sensor over a long period. The module's back panel has pre-drilled multi-functional mounting holes, compatible with standard VESA mounting holes or sliding rail mounts, adapting to the installation requirements of different terminal devices and supporting portrait and landscape orientation switching, thus improving usability.

[0048] This utility model is applicable to the following typical scenarios: in bus stop signs or outdoor advertising screens, it can automatically adjust brightness according to morning and evening times and weather changes, extending equipment life and avoiding glare at night; in electric vehicle charging pile displays, it automatically enters a low-power standby mode at night, saving energy and protecting the environment; in meeting room entrances or shopping mall signage systems, it can combine time and light adjustment strategies to improve user experience; in smart community or campus terminals, it can achieve stable operation without human intervention by remotely uploading environmental status and operation logs. The energy-saving control module 4 includes a PWM dimming chip 41 and a current-driven amplifier 42, used to provide dimming signals to the backlight adjustment circuit 5.

[0049] In summary, this invention, through the coordinated operation of the aforementioned units, can dynamically adjust the operating state of the LCD module according to environmental changes, significantly reducing energy consumption and extending module lifespan while ensuring good visibility. Furthermore, the system architecture is compact, the control logic is clear, and it is suitable for mass embedding into various smart terminals, demonstrating significant practical value.

[0050] The present invention has been described above with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvements made using the inventive concept and technical solution of the present invention, or the direct application of the inventive concept and technical solution to other situations without modification, are all within the protection scope of the present invention.

Claims

1. A liquid crystal display module with environmental adaptive energy-saving control function, characterized in that, include: LCD screen; The main control board controls the driving of the LCD screen; An ambient sensing unit, including a light sensor and a temperature sensor, is used to acquire ambient light intensity and temperature data; An energy-saving control module is connected to the main control board and adjusts the operating parameters of the LCD screen based on the data obtained by the environmental sensing unit. A backlight adjustment circuit, connected to the energy-saving control module, is used to adjust the backlight brightness of the LCD screen; The power management unit is used to supply power and maintain the module's standby operation in a low-power state.

2. A liquid crystal display module with environmental adaptive energy-saving control function according to claim 1, characterized in that, The environmental sensing unit is connected to the main control board via I²C communication.

3. A liquid crystal display module with environmental adaptive energy-saving control function according to claim 1, characterized in that, The energy-saving control module includes a PWM dimming chip and a current-driven amplifier, which are used to provide dimming signals to the backlight adjustment circuit.

4. A liquid crystal display module with environmental adaptive energy-saving control function according to claim 1, characterized in that, The main control board is equipped with a timer module, which triggers the power management unit to enter a low-power standby state when the ambient brightness is continuously lower than a set threshold.

5. A liquid crystal display module with environmental adaptive energy-saving control function according to claim 1, characterized in that, The main control board is connected to the LCD screen via an LCD driver chip, which is an SPI or RGB interface chip.

6. A liquid crystal display module with environmental adaptive energy-saving control function according to claim 1, characterized in that, It also includes a wireless communication module, which is connected to the main control board and is used to upload the real-time data collected by the environmental sensing unit to a remote server.

7. A liquid crystal display module with environmental adaptive energy-saving control function according to claim 6, characterized in that, The wireless communication module is a Wi-Fi or LoRa wireless communication module.

8. A liquid crystal display module with environmental adaptive energy-saving control function according to claim 3, characterized in that, The backlight adjustment circuit includes an LED backlight source and a constant current drive chip, wherein the constant current drive chip receives the pulse width signal output by the PWM dimming chip.

9. A liquid crystal display module with environmental adaptive energy-saving control function according to claim 1, characterized in that, The power management unit includes a main power input port and a backup battery. When the main power is disconnected, it automatically switches to backup battery power.

10. A liquid crystal display module with environmental adaptive energy-saving control function according to claim 1, characterized in that, The main control board is a control chip that integrates an ARM Cortex-M series processor.

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