Blog

In the field of monochrome passive LCD technology, Vertical Alignment (VA) technology is highly favored for its excellent contrast ratio and deep black background effect.   I. Technical Principle of VATN LCD   VA technology is a liquid crystal display technology that utilizes the electric field effect. Its principle mainly involves controlling the voltage magnitude and direction of LC(liquid crystal) cells to alter the arrangement of liquid crystal molecules. VATN-type LCDs employ vertically aligned liquid crystal molecules. Their working principle is as follows: OFF state: The liquid crystal molecules in the VATN LCD are vertically aligned on the glass substrate, resulting in a deep black state. ON state: When a voltage is applied, these molecules tilt, allowing light to pass through and displaying a clear white state. Therefore, VATN LCDs can achieve a deep black background effect. When paired with a white backlight, they offer a high black-and-white contrast ratio, delivering clear and vivid visual effects, making them appear high-end and stylish when used in premium electronic products.   II. Limitations of Ordinary VATN LCDs   VATN LCD is featured of deep dark black backgound and high contrast ratio, but these dominant performance will become worse as the number of segments (drive duty) increases:   Weakened deep black background effect: As the number of segments increases, the blackness of the background becomes lighter, the contrast ratio decreases, and the display effect is compromised. Narrowed viewing angle: The viewing angle of standard VATN LCDs significantly become narrower as the number of segments increases. For example,  At 1/1 duty, the viewing angle can reach up to 170°, which is close to a full viewing angle.  At 1/4 or 1/8 duty, the viewing angle is reduced to around 100°, limiting the multi-angle viewing experience.   III. Wide-View VATN LCD   To meet customer demand for wider viewing angles, we have introduced the full-view VATN LCD through technological innovation. Our R&D team has made special process and material improvements to enable liquid crystal molecules to control and guide light more effectively at different angles. While maintaining the original advantages of contrast ratio and black performance, the viewing angle has been significantly enhanced. Compared to standard VATN LCDs, the viewing angle of wide-view VATN LCDs has been greatly improved. At ≤1/4 duty, the maximum horizontal viewing angle of the full-view VATN LCD can reach 170°, and the vertical viewing angle can reach 110°, which is nearly double that of ordinary VA LCDs. However, the production of full-view VATN LCDs is more difficult with lower yield rate, and the cost is 10%-20% higher than that of standard VATN LCDs. Additionally, due to its lower light transmittance of full-view VA LCDs, the white color of the displayed characters may not be bright enough, which may have a certain impact on the contrast ratio.   IV. Selection Recommendations   Since VATN LCDs do not perform well at high duty cycles, we usually recommend that customers choose them for ≤1/4 duty to achieve good display effects. Therefore, VATN LCDs are mostly recommended for segment-type display products.   1/1duty VA segment LCD:   Ordinary VATN LCDs are the best choice due to their excellent display effect, near-full viewing angle, and high cost-effectiveness. 1/4 duty VA segment LCD: Single viewing: If the main viewing direction is 6:00 or 12:00, and customers pursue a high contrast effect with deep black and bright white, it is recommended to choose ordinary VATN LCDs. Multi-angle viewing: For the application scenarios requiring multi-angle viewing, such as medical equipment, industrial control panels, and vehicle displays, and if customers are willing to pay extra for a wider viewing angle, it is recommended to choose full-view VATN LCDs.   V. Conclusion： Ordinary VATN LCDs and full view VATN LCDs each have their unique advantages and application scenarios. Through this analysis, we hope you can better understand the technical differences between them and make more informed decisions when purchasing. If you are interested in VATN LCDs, please feel free to contact us for more information. Automotive VATN LCD   Medical VATN LCD Automotive VATN LCD Energy Managment VATN LCD Home Appliance VATN LCD

In the fast - evolving world of touch - enabled devices, capacitive touch panels (CTPs) have become the standard interface for a wide range of applications. Understanding the different CTP structures, such as G+G, G+F, and G+FF, is crucial for both device manufacturers and consumers. Here we will delve into the characteristics, advantages, disadvantages, and suitable application scenarios of each structure.   1. G+G (Glass + Glass) Structure   The G+G (Glass + Glass) structure is composed of two layers of glass. The surface cover, known as the Cover Lens, is made of tempered glass, which is enhanced mechanical /physical strength, providing robust protection against external forces. The inner layer is the Sensor Glass, which is typically ITO glass. The two glass layers are bonded together using Optically Clear Adhesive (OCA).  Advantages:    √ Durability:  With the outer cover glass acting as a shield, the G+G structure is highly resistant to scratches, abrasions, and impacts.     √ High - Quality Visuals: The use of glass in both layers results in high transmittance, ensuring that colors are vivid, and images are sharp.     √ Precise Touch Sensing: The two - glass construction, along with the conductive ITO layer in the Sensor Glass, provides a stable and reliable touch - sensing environment, enabling smooth and responsive multi - touch interactions.    √ Long - lasting:  Due to its robust construction, the G+G touch panels can withstand years of use without significant degradation in performance, making them suitable for industrial and automotive applications where reliability is crucial. Disadvantages:     × Heavy and Thick: The two glass layers makes G+G touch panels relatively heavier and thicker compared to other structures.    × Higher Cost: The manufacturing process for G+G panels is more complex and requires high - quality glass materials. As a result, they tend to be more expensive. Applications: Automotive Displays:  G+G touch panels can withstand the vibrations and temperature variations inside a vehicle and offer a high - quality visual experience for drivers and passengers. Industrial Control Panels: The durability of G+G touch panels ensures that they can operate reliably in harsh environments, where they may be subject to accidental impacts or rough handling.   2. G+F (Glass + Film) Structure   The G+F (Glass + Film) structure, the outer cover lens layer is Tempered Glass, and the inner senor layer is a flexible film, typically made of Polyethylene terephthalate (PET). This film is coated with a transparent conductive material, such as ITO or a more flexible alternative like silver nanowires.  Advantages:     √ Lightweight and Slim: The replacement of the inner layer with a flexible film makes the G+F type CTP significantly lighter and thinner.     √ Flexible Possibility:  The flexibility of the film also allows for some degree of bending, which can be an advantage in certain applications.    √ Cost - Effective:  Using a film instead of glass in one layer reduces the manufacturing cost and material cost.     √ Good Touch Sensitivity: Despite the use of a film, G+F touch panels can still provide accurate touch sensing.  Disadvantages:     × Lower Durability:  Compared to G+G panels, G+F panels are less durable. The film layer is more prone to scratches and damage.     × Slightly Reduced Optical Quality: The film layer have lower transmittance, which may affect the visual quality of the display. Applications: Smartphones: Their cost - effectiveness of G+F touch panels allows it at an affordable price point without sacrificing too much on functionality. Tablets: The lightweight design of G+F touch panels is beneficial for users who want a portable and easy - to - hold device.   3. G+FF (Glass + Film + Film) Structure   The G+FF (Glass + Film + Film) structure starts with the outer layer of glass as the protective Cover Glass,  Beneath the glass, there are two layers of flexible films. Each film is typically made of a material like PET and is coated with a transparent conductive material. The conductive coatings can be ITO or other advanced conductive materials. The two films are laminated together, and then this film stack is adhered to the glass using a high - quality adhesive.  Advantages:    √ Enhanced Flexibility: The addition of an extra film layer in the G+FF structure compared to G+F further increases the flexibility of the touch panel.     √ Improved Touch Performance: The two - film layers can be optimized to provide better touch performance due to its a lower resistance.    √ Cost - Balance: While G+FF panels are more complex than G+F panels, they are still generally more cost - effective than G+G type. Disadvantages:    × Durability Concerns:  Similar to G+F panels, the film layers in G+FF panels are not as durable as glass. They are more likely to get scratched or damaged over time.    × Complex Manufacturing: The addition of an extra film layer increases the complexity of the manufacturing process and higher production costs. Applications: Flexible and Foldable Devices: to require a touch - screen solution that can withstand the repeated bending and folding associated with their unique form factor.   In conclusion, each capacitive touch panel structure - G+G, G+F, and G+FF - has its own set of characteristics, advantages, disadvantages, and ideal application scenarios. Device manufacturers need to carefully consider these factors when choosing the right touch - panel technology for their products. Whether it's the durability of G+G for industrial use, the cost - effectiveness and portability of G+F for consumer electronics, or the flexibility of G+FF for emerging flexible device designs, there is a CTP structure to meet every need.    

Selecting the ideal display for your project is a crucial decision that can significantly influence user experience, functionality, and overall success. With a plethora of display technologies available, understanding their unique characteristics and applications is essential. This guide delves into key factors to consider when choosing a display, highlighting specific modules like the 3.95 inch TFT LCD, Graphic COG LCD Module, and 1.3 inch OLED COG Module.   1. Understand Your Project Requirements Begin by clearly defining the purpose of your project. Is it a wearable device, industrial equipment, or a consumer gadget? The application's nature dictates the display's size, resolution, and technology. For instance, wearable devices benefit from compact displays like the 1.3 inch OLED COG Module, offering vibrant visuals in a small form factor.   2. Display Size and Resolution The display's size should harmonize with your device's overall design and user interface. A 3.95 inch TFT LCD is suitable for handheld devices, providing ample screen real estate without compromising portability. Resolution, measured in pixels per inch (PPI), determines image clarity. Higher PPI ensures sharper visuals, crucial for applications requiring detailed imagery.   3. Color vs. Monochrome Displays Decide between color and monochrome displays based on your project's visual requirements. Color displays, such as the 3.95 inch TFT LCD, are ideal for rich graphical interfaces, while monochrome displays, like certain Graphic COG LCD Modules, suffice for text-based or simple graphic applications, often consuming less power.   4. Display Technology: TFT LCD, OLED, and COG Modules Understanding different display technologies aids in making an informed choice: TFT LCD (Thin-Film Transistor Liquid Crystal Display): Offers vibrant colors and is widely used in devices like smartphones and tablets. The 3.95 inch TFT LCD provides a balance between size and visual quality, suitable for various applications. OLED (Organic Light-Emitting Diode): Each pixel emits light, resulting in deeper blacks and higher contrast ratios. The 1.3 inch OLED COG Module is energy-efficient and ideal for devices where display thickness and power consumption are critical. COG (Chip-On-Glass) Modules: Integrate the driver IC directly onto the glass substrate, reducing space and enhancing reliability. Both the Graphic COG LCD Module and 1.3 inch OLED COG Module exemplify this integration, beneficial for compact designs.   5. Power Consumption For battery-powered devices, display power consumption is a pivotal factor. OLED displays, like the 1.3 inch OLED COG Module, are known for their energy efficiency, as they only consume power for lit pixels. Conversely, TFT LCDs require constant backlighting, potentially leading to higher power usage.   6. Environmental Considerations Assess the environmental conditions where the device will operate: Outdoor Visibility: Displays exposed to sunlight need high brightness levels. TFT LCDs often struggle in direct sunlight, whereas OLEDs maintain better visibility. Temperature Range: Extreme temperatures can affect display performance. Ensure the chosen display operates reliably within your project's anticipated temperature range.   7. Interface and Compatibility Ensure the display's interface aligns with your system's capabilities. Common interfaces include SPI, I2C, and parallel connections. Modules like the Graphic COG LCD often come with integrated controllers, simplifying integration.   8. Viewing Angles and User Experience Consider the display's viewing angles, especially for devices viewed from various positions. OLED displays typically offer wider viewing angles compared to traditional LCDs, enhancing user experience.   9. Cost and Availability Budget constraints play a significant role. While OLEDs provide superior visuals, they may come at a higher cost than LCDs. Evaluate the cost-benefit ratio in the context of your project's requirements.   10. Longevity and Durability OLED displays can experience burn-in over time, affecting longevity. If durability is paramount, especially in industrial applications, certain LCDs might offer longer lifespans.   Spotlight on Specific Modules 3.95 inch TFT LCD: Ideal for applications needing a balance between size and visual clarity, such as handheld devices and control panels. Graphic COG LCD Module: Suitable for devices requiring reliable monochrome displays with compact integration, often used in industrial equipment. 1.3 inch OLED COG Module: Perfect for wearable technology and compact devices, offering high contrast and energy efficiency.   Selecting the right display necessitates a comprehensive understanding of your project's unique demands. By evaluating factors like size, technology, power consumption, and environmental suitability, you can choose a display that not only meets technical specifications but also enhances the overall user experience.  

TFT LCD modules have revolutionized the way we interact with technology, offering high-resolution displays, vibrant colors, and reliable performance. Their adaptability makes them indispensable across a wide range of industries. Whether you’re designing a compact wearable device or a large industrial control panel, TFT LCD modules provide the perfect solution. Let’s explore some of the most common applications and how different types, such as the 2.4 inch TFT LCD or the 1.45 inch circular IPS TFT, are utilized in real-world scenarios.   1. Consumer Electronics In the world of consumer electronics, TFT LCD modules are ubiquitous. From smartphones and tablets to smartwatches and gaming devices, these displays deliver crisp visuals and responsive touch interfaces. For instance, the 2.4 inch TFT LCD is a popular choice for portable gaming consoles and handheld devices. Its compact size and excellent image quality make it ideal for applications where space is limited but performance cannot be compromised. The vibrant colors and sharp resolution ensure an immersive user experience, even on smaller screens.   2. Automotive Displays The automotive industry has embraced TFT LCD modules for infotainment systems, instrument clusters, and rear-seat entertainment. Displays like the 7 inch TFT LCD are commonly integrated into car dashboards, providing drivers with clear and accessible information. These modules are engineered to withstand extreme temperatures and vibrations, ensuring reliable performance in demanding environments. Additionally, advancements in IPS technology have improved viewing angles, making them suitable for multi-passenger vehicles where visibility from different angles is crucial.   3. Industrial Control Systems In industrial settings, TFT LCD modules are essential for human-machine interfaces (HMIs) and control panels. Their durability and ability to operate in harsh conditions make them perfect for factory automation, machinery control, and monitoring systems. For example, a 5 inch TFT LCD with a rugged design and high brightness is often used in outdoor or high-ambient-light environments. These displays ensure that critical data remains visible, even in challenging conditions, helping operators maintain efficiency and safety.   4. Medical Devices The medical industry relies on the precision and reliability of TFT LCD modules for devices such as patient monitors, diagnostic equipment, and portable medical tools. The 1.45 inch circular IPS TFT is particularly useful in compact medical devices where space is limited but high-quality visuals are essential. Its circular shape and IPS technology provide accurate color reproduction and wide viewing angles, ensuring that healthcare professionals can rely on the display for critical information. This combination of form and function makes it a standout choice for modern medical applications.   Watch   Thermostat   Washing Machine   Robot Sweeper   Smart Voice Control     5. Wearable Technology Wearable devices, such as fitness trackers and smartwatches, often utilize smaller TFT LCD modules to deliver information in a compact and energy-efficient manner. The 1.45 inch circular IPS TFT is a prime example, offering a unique shape that fits seamlessly into wearable designs. Its low power consumption and high-resolution display make it ideal for devices that require long battery life and clear visuals. Whether it’s tracking fitness metrics or displaying notifications, this type of display ensures a seamless user experience.   Why Choose TFT LCD Modules? TFT LCD modules are highly customizable, allowing manufacturers to tailor them to specific applications. Whether you need a 2.4 inch TFT LCD for a handheld device or a 7 inch TFT LCD for an automotive dashboard, these displays can be adapted to meet your requirements. Their versatility, combined with advancements in IPS technology, ensures that they remain a top choice for industries worldwide.   As technology continues to evolve, TFT LCD modules will play an even greater role in shaping the future of display solutions. From consumer electronics to industrial applications, their ability to deliver high-quality visuals in various sizes and shapes makes them indispensable. Whether you’re designing a cutting-edge wearable or a robust industrial control system, TFT LCD modules offer the performance and reliability you need.  

When selecting a display module for your product, quality is a key factor. Thin-Film Transistor Liquid Crystal Display (TFT LCD) technology has become a popular choice due to its vibrant colors, sharp visuals, and reliable performance. But is a TFT LCD truly good quality? The answer is a resounding yes. TFT LCDs deliver exceptional performance across industries, from consumer electronics to industrial automation.   High-Resolution and Full-Color Display   TFT LCDs are well-known for their superior image quality. Unlike traditional LCDs, they use an active matrix technology that enhances brightness and contrast, making them ideal for applications requiring a clear and vivid display. A 2” TFT Full Colour Touchscreen is a great example of how these displays deliver an immersive and responsive user experience, making them suitable for industrial controls, medical devices, and consumer electronics.   Durability and Performance   A 2.0 inch TFT LCD offers excellent durability and stability, even in demanding environments. These displays are built with robust materials, ensuring resistance to temperature fluctuations, shocks, and vibrations. Whether integrated into handheld devices or automotive dashboards, they provide long-lasting performance without compromising visual clarity.   Versatile Applications   The versatility of TFT LCD technology allows it to be used in various industries, from medical instruments to smart home devices. A 2.0 inch TFT LCD display module is particularly popular in compact electronic gadgets where space efficiency and high resolution are essential. These displays support multiple interfaces, making them easy to integrate into different systems.   Why Choose Our TFT LCD Solutions?   The versatility of TFT LCD technology allows it to be used in various industries, from medical instruments to smart home devices. A 2.0 inch TFT LCD display module is particularly popular in compact electronic gadgets where space efficiency and high resolution are essential. These displays support multiple interfaces, making them easy to integrate into different systems.   If you are looking for a 2.0 inch TFT LCD or a 2” TFT Full Colour Touchscreen, our team is ready to provide tailored solutions to fit your specific requirements. Contact us today to explore our premium TFT LCD products and enhance your display experience!    

With the thriving global two-wheeler market, various types of vehicles, including electric bicycles, motorcycles, and scooters, are undergoing unprecedented intelligent transformations. As the "neural hub" of two-wheelers, their instrumentation's intelligence and durability have become a common focus for both consumers and manufacturers. As a renowned LCD supplier of electric bicycle instrumentation displays in China Market, Shengfeng specializes in providing cost-effective, highly durable, and highly customizable LCD display solutions for the two-wheeler sector, collaborating with brand clients to create products with stronger market competitiveness. What Kind of Professional LCD Displays are Needed for Two-Wheeler Instrumentation Display?   Extreme Environmental Adaptability Two-wheelers are exposed to outdoor environments throughout the year and must endure challenges such as high temperatures, low temperatures, rain, and vibrations. Our LCD displays employ a wide Operating Temp. range of -30°C to 85°C, combined with the client's dustproof and waterproof design above IP65, ensuring stable operation of the instrumentation under various harsh conditions. Visibility in Bright Light Even under direct sunlight, the display must maintain high clarity to ensure drivers can accurately read key information such as speed, battery life, and mileage. For instance, we utilize VATN LCD technology. Customized Designs and Irregular-Shape LCD Some two-wheeler instrument panels have limited space, such as motorcycle LCD customization, requiring LCD displays with high customization and irregular shape adaptability to perfectly integrate into various compact designs.   Shengfeng's Customized VATN LCD Display Solutions for Two-Wheeler Instrumentation Screens   Solution 1: VATN LCD + Custom Silkscreen/Color Film Process Technology Highlights: VATN LCD Technology: Achieves a pure black background with white text, with a contrast ratio of over 500:1 and a wide viewing angle of over 160°, ensuring readability in bright light. Customized LCD Design: Designs LCD size, shape, and display pattern according to customers' personalized requirements to create unique display interfaces. Color Outprinting/color film:  process with customized multi-color or gradient-color icons, enriching the display effect and enhancing the visual grade of the instrumentation. Application Advantages: Suitable for mid-to-high-end models, achieving the best balance between display effect and cost.   Solution 2: VATN LCD + Optical Bonding with Glass Cover  Technology Advantages: Optical Bonding: Seamlessly laminates the VATN screen with a tempered glass cover plate using OCA optical adhesive, eliminating air layer reflection and increasing light transmittance by 30%. Impact Resistance and Scratch Resistance: The cover glass has a hardness of over 6H, resisting debris impact and daily wear during rides, thereby extending the life of the LCD instrumentation screen. Design Features: Integrated Design: The surface is smooth and seamless, supporting surface treatments such as AF(anti-fingerprint）coating and AG anti-glare, satisfying the dual pursuit of refined appearance and user experience for high-end smart models.   Why Choose Shengfeng?   Rich Industry Experience:  Serving renowned domestic two-wheeler manufacturers, covering fields such as electric bicycles, motorcycles, and shared transportation. Full-Process Technical Support:  Providing one-stop display solutions from the design and production of LCD and cover glass to optical lamination. Strict Quality Control Standards:  Certified by ISO 9001, with 100% full inspection and aging tests, and a defect rate below 0.2%, ensuring exceptional quality. Rapid Response and Delivery:  A sampling cycle of 15 days, supporting small-batch customization, flexibly meeting customer needs.   Collaborate with Shengfeng to Shape the New Future of Two-Wheeler Instrumentation Displays Whether you are pursuing the cost-effective VATN + color printing, or the VATN LCD + cover glass optical bonding favored by high-end models, Shengfeng can provide you with highly reliable, cost-effective, and quickly delivered display solutions. Please contact us immediately to embark on your two-wheeler instrumentation display solution upgrade journey.

When used outdoors, devices face severe challenges from complex outdoor environments. To ensure stable and reliable operation of these devices in outdoor environments, LCD displays need to meet a series of special requirements and adopt corresponding solutions.   I. Outdoor Application Characteristics:   Intense and Variable Ambient Light: Under different lighting conditions such as direct sunlight, cloudy days, and nighttime, there are significant differences in ambient brightness, placing higher demands on the screen's brightness and contrast. Wide Temperature Range: Outdoor environments experience significant temperature variations, from high temperatures and intense sunlight in summer to low temperatures and severe cold in winter. The outdoor LCD displays need to have good wide-temperature operating performance. Impact of Adverse Weather: The outdoor environment is complex, and LCD displays need to have high reliability to withstand the erosion of natural factors such as rain, snow, dust, and salt fog.   II. Requirements for Outdoor LCD Displays:   Sunlight Readability： Due to the intense and variable outdoor lighting, outdoor LCD displays need high brightness (typically ≥800cd/m²) and high contrast (typically ≥500:1) to ensure clear visibility in bright environments. Wide Operating Temperature Range: Given the large outdoor temperature variations, LCD displays need wide-temperature operating performance (typically from -30°C to 80°C) to adapt to extreme high and low temperatures. High Reliability and Stability: In complex outdoor environments, LCD displays need high reliability to withstand the erosion of natural factors such as rain, snow, dust, salt fog, and vibration. Low Power Consumption: If outdoor devices are powered by batteries, LCD displays need low power consumption characteristics to extend device runtime.   III. Outdoor LCD Displays Solutions   To overcome the challenges of outdoor applications, LCD displays need to be optimized in the following areas:   Solutions for Sunlight Readable LCD: Reflective/Transmissive-Reflective Mode:  At outdoor environments with sufficient natural light, use the reflective mode LCD to display content without needing backlight, saving energy and being environmentally friendly. Such as Monochrome LCD TN, STN, FSTN LCD. Transmissive Mode/High Brightness: When backlight needs to be on continuously, use high-brightness LED backlight modules to increase the screen's surface brightness to ensure clear visibility in bright environments. For example, high-brightness TFT modules with surface brightness of 800cd/m² or 1000cd/m². High Contrast: Due to the intense outdoor natural light, outdoor LCD displays need to achieve high contrast (e.g., ＞500:1) to ensure that screen content is clearly distinguishable. Choose high-contrast LCD technologies such as VATN LCD and IPS TFT LCD.   Solutions for Wide-Temperature Operation: Use wide-temperature material and components, such as liquid crystal, polarizer, and drive ICs to ensure the outdoor LCD display module operates normally at extreme temperatures. Adopt wide-temperature backlight modules to ensure stable backlight operation at extreme temperatures.   Solutions for High Durability: Use high-quality materials and components to improve the reliability and lifespan of outdoor LCD displays. Assemble protective cases outside the display or add high-strength tempered glass as a protective layer on the surface to enhance the screen's impact resistance, wear resistance, and corrosion resistance.   Intelligent Dimming and Energy Conservation: Equip with ambient light sensors to automatically adjust screen brightness based on ambient light, reducing energy consumption. Use low-power LED backlight and drive ICs to further reduce screen power consumption.   III. Applications   Outdoor LCD displays are widely used in the following fields: - Outdoor measurement and detection equipment: Such as environmental monitors and water quality detectors, used to display measurement data and device status. - Electric meters, water meters, gas meters, and other electrical products: Used to display information such as electricity consumption, water usage, and gas consumption. - Charging stations: Used to display charging status, charging time, charging costs, and other information. - Outdoor power supplies: Used to display battery life, output power, operating status, and other information. - Two-wheeled and three-wheeled vehicles: Used to display speed, battery life, mileage, and other information. - Lawn mowers and other agricultural vehicles: Used to display operating status, fault information, and more. Gas MeterFSTN Reflective Graphic LCD InterphoneHigh-brightness TFT LCD Measuring deviceHigh-brightness TFT LCD Lawn mowerHigh-contrast  VATN LCD Charging pileHigh-brightness TFT LCD