Hangzhou Leehon Technology Co., Ltd. Display Solutions
News 2025-04-08
Hangzhou Leehon Technology Co., Ltd. (www.leehonlcd.com), as a provider of display solutions, excels in understanding the specific needs of human-machine interaction interfaces in different industries and offering corresponding display modules. From simple segment and character monochrome displays to complex graphic dot-matrix monochrome displays, and from colorful and interactive TFT color LCDs to OLED displays with high contrast and low power consumption, Leehon’s product line covers a wide range of technologies. This diversity enables their products to penetrate numerous fields, including industrial control, medical equipment, smart home, consumer electronics, communication devices, and automotive electronics. Below, we will select several representative product types and analyze their application scenarios in detail.
Product 1: Medium-sized TFT LCD Modules (Taking 7-inch 800×480 / 1024×600 resolution TFT as an example)
These modules are one of the most widely used color display solutions, balancing display area, resolution, cost, and power consumption.
Core Technical Features and Advantages
- Full-color display: Capable of displaying 16.7M or 262K colors, providing rich color expressiveness suitable for graphical user interfaces (GUI).
- Moderate size and resolution: The 7-inch screen offers sufficient display space for showing charts, images, complex menu structures, and virtual keyboards. Resolutions of 800×480 or 1024×600 ensure good clarity.
- Diverse interfaces: Typically supporting RGB, LVDS, or MIPI interfaces, facilitating connection with various main control platforms.
- Optional touch screen: Can be integrated with resistive touch screens (RTP) or capacitive touch screens (CTP) for human-machine interaction.
- Mature technology and supply chain: TFT LCD technology is highly mature, with relatively controllable costs and a stable supply chain.
- Customizability: Brightness, viewing angles (TN/IPS), and operating temperature ranges can be customized according to application needs.
Detailed Application Scenario Analysis
A. Industrial Control and Human-Machine Interface (HMI – Human Machine Interface)
- Specific devices: Control panels of PLCs (Programmable Logic Controllers), operation terminals of CNC (Computer Numerical Control) machines, teaching pendants of industrial robots, and process automation monitoring systems.
- Application details: In these scenarios, the 7-inch TFT screen is used to display real-time production process diagrams, equipment operating status parameters (temperature, pressure, speed, output, etc.), alarm messages, historical data trend charts, etc. Operators can use the interface (usually with a touch screen) to set parameters, select programs, control start/stop, and diagnose faults.
- Why it is suitable:
- Information visualization: Colorful graphic interfaces can more intuitively present complex industrial processes and equipment status compared to traditional numeric displays or monochrome screens. Different colors can be used to distinguish normal/alarm states, and animations can simulate equipment operation.
- Convenient interaction: With a touch screen, intuitive click, drag, and zoom operations can replace a large number of physical buttons and knobs, simplifying the panel design and improving operational efficiency.
- Environmental adaptability: Leehon can provide modules with wide temperature ranges (e.g., -20°C to +70°C, or even wider) and rugged designs to cope with temperature fluctuations, vibrations, and electromagnetic interference in industrial settings. High-brightness versions (e.g., 800-1000 cd/m²) are available to handle strong light environments.
- Data display requirements: The 7-inch size is sufficient to display multiple data channels, trend charts, and simplified process diagrams, meeting the needs for monitoring and basic control.
B. Medical Equipment
- Specific devices: Portable monitors (displaying ECG, SpO₂, blood pressure waveforms and values), control panels of ventilators, infusion pumps, blood analyzers, and portable ultrasound diagnostic devices (as auxiliary displays or operation interfaces).
- Application details: Displaying physiological parameter waveforms (e.g., ECG), real-time values, setting menus, alarm messages, and patient information. Doctors or nurses monitor patient conditions and adjust equipment parameters through the screen. Color display helps distinguish different waveforms or parameters, enhancing readability.
- Why it is suitable:
- Clear display: Medical information, especially waveforms, needs to be displayed clearly and accurately. The color and resolution of TFT meet this requirement. The wide viewing angle characteristic of IPS technology is particularly important, allowing multiple medical staff to observe the screen clearly from different angles.
- Reliability requirements: Medical equipment has extremely high demands for stability and reliability. Industrial-grade or medical-grade modules provided by Leehon must undergo strict testing to ensure long-term stable operation.
- Easy to clean: With appropriate touch screen and housing design, a flat and easily disinfected surface can be achieved.
- Information density: The 7-inch screen can display multiple parameters and waveforms simultaneously, meeting the needs for multi-parameter monitoring.
C. Smart Home Control Panel
- Specific devices: Smart home central control screens, indoor units of video intercom systems, and intelligent building control terminals.
- Application details: Serving as the control center of the home environment, displaying indoor temperature, humidity, air quality, lighting status, and security camera footage. Users control home appliances (lighting, curtains, air conditioning, audio-visual systems) through the touch screen, set scene modes, answer visitor calls, and view surveillance footage.
- Why it is suitable:
- Aesthetic and modern feel: Colorful TFT screens, combined with excellent UI design, can enhance the technological and aesthetic appeal of the home environment.
- Centralized control: The 7-inch screen provides enough space to integrate various control functions, simplifying user operations.
- Multimedia capabilities: Capable of displaying images (e.g., weather icons, security snapshots) and even playing simple videos (e.g., visitor call footage).
- Network connectivity: Typically integrated with embedded systems, it connects with various smart devices through the network, with the screen being the core of interaction.
D. POS (Point of Sale) Terminals / Self-Service Terminals
- Specific devices: Retail POS machines, restaurant ordering machines, self-service inquiry machines, and self-service ticketing/ticket collection machines.
- Application details: On POS machines, the main screen (facing the cashier) or customer display screen (facing the customer) uses a 7-inch TFT to show product information, prices, payment QR codes, advertisements, etc. On self-service devices, users browse information, select services, enter data, and complete payments through the touch screen.
- Why it is suitable:
- Information display and interaction: Clearly displaying product lists, menus, and operation instructions. The touch function is the core interaction method for self-service.
- Durability: High usage frequency in commercial environments requires the screen to be durable (e.g., surface hardness, scratch resistance).
- Viewing angle: The customer display screen needs a good viewing angle for easy viewing by customers.
- Cost-effectiveness: Compared to larger screens, the 7-inch size offers better cost-effectiveness while meeting basic functions.
E. Test and Measurement Instruments
- Specific devices: Oscilloscopes, spectrum analyzers, network analyzers, power test equipment.
- Application details: Displaying complex waveforms, spectrum charts, network parameters (e.g., S-parameters), measurement results, and setting menus. Color display helps distinguish multiple curves or different measurement modes.
- Why it is suitable:
- Waveform/graph display: TFT can finely display various graphics and data measured by the instruments.
- Data analysis: The screen needs to clearly display a large number of data points and analysis results.
- Operation interface: Instrument settings and function selections are made through the screen menu and (possible) touch functions.
Product 2: Monochrome Graphic Dot-Matrix LCD Modules (Taking 128×64 / 192×64 resolution FSTN/STN as an example)
These modules are cost-effective and low-power display solutions, suitable for applications where information display is relatively simple, color is not required, and power consumption is a concern.
Core Technical Features and Advantages
- Low power consumption: Compared to TFT LCDs, they have extremely low power consumption, making them particularly suitable for battery-powered devices.
- Cost-effective: The technology is mature and the manufacturing cost is low.
- High contrast (FSTN/ASTN): They can provide good readability in specific viewing angles, especially with backlighting.
- Multiple backlight options: Available in various LED backlight colors such as yellow-green, white, and blue, which can adapt to different product design styles and ambient lighting conditions.
- Simple interface: Typically using parallel or SPI interfaces, they are easy to connect with various microcontrollers (MCUs).
- Wide temperature operation: It is easy to achieve a wide operating temperature range.
- Sunlight readability (reflective/transflective types): Certain types of monochrome LCDs (such as reflective or transflective) remain readable in strong light without the need for high-power backlighting.
Detailed Application Scenario Analysis
A. Industrial Instruments and Sensor Displays
- Specific devices: Digital multimeters, clamp meters, temperature and humidity recorders, flow meters, pressure transmitters, electricity meters, water meters, gas detectors.
- Application details: Displaying measured values, units, simple status icons (such as battery level, connection status), and menu items. The 128×64 or 192×64 resolution is sufficient to show a few lines of text and simple graphic symbols.
- Why it is suitable:
- Power-sensitive: Many handheld or field-installed instruments are battery-powered, so low power consumption is a key requirement.
- Cost control: For instruments with relatively single functions and high production volumes, the cost advantage of monochrome LCDs is significant.
- Simple information: Mainly displaying numbers and a small amount of text/symbols, with no need for color display.
- Environmental adaptability: Industrial sites may have varying light conditions. The option of transflective types can improve outdoor readability, and the wide temperature characteristics can adapt to outdoor or harsh environments.
- Reliability: With a simple structure, they are relatively less prone to damage compared to TFTs.
B. Medical and Health Devices (Simple Types)
- Specific devices: Digital thermometers (high-end models), blood glucose meters, blood pressure monitors (arm/wrist types), simple breathing trainers, some infusion pumps (displaying rate, total volume, and other basic information).
- Application details: Displaying measurement results (body temperature, blood glucose value, blood pressure value), historical records, operation prompts, units, battery level, etc. Simple graphics can be used to indicate operation steps or status.
- Why it is suitable:
- Portability and power consumption: These devices are mostly handheld or portable and battery-powered, so low power consumption is crucial.
- Cost: In the highly competitive consumer medical market, cost is an important consideration.
- Clear information: For critical numerical readings, high-contrast monochrome displays (especially with backlighting) are very clear and easy to read.
- Ease of use: The displayed information is relatively fixed and simple, making it easy for users to understand.
C. Office Equipment and Consumer Electronics
- Specific devices: Fax machine control panels, printer status displays, telephones (especially IP phones), remote controls (high-end models), electronic dictionaries, graphic calculators.
- Application details: Displaying device status (such as ink level, paper status), menu options, incoming call numbers, contact entries, dictionary definitions, calculation processes, etc.
- Why it is suitable:
- Functional display: Satisfying basic information display and menu navigation functions is sufficient.
- Cost-effectiveness: In these products, the display screen is usually not the core function, so cost control is important.
- Power consumption: For battery-powered remote controls or portable devices, low power consumption is advantageous.
D. White Goods Control Panels
- Specific devices: Washing machines, refrigerators (some models with displays on the door), microwave ovens, ovens, air conditioner indoor units.
- Application details: Displaying operating modes, set temperatures, remaining time, appointment time, fault codes, etc. Simple graphic icons (such as washing mode icons, snowflake icons) can assist in display.
- Why it is suitable:
- Human-machine interaction: Providing richer information interaction compared to numeric displays or LED lights.
- Cost: Compared to color screens, monochrome screens are cheaper and more suitable for mass-produced home appliances.
- Reliability: The relatively stable usage environment of home appliances means that the reliability of monochrome screens is sufficient.
Product 3: TFT LCD Modules with Capacitive Touch Screens (CTP) (e.g., 5-inch / 7-inch IPS CTP)
This is the mainstream choice for modern interactive devices, combining the excellent display performance of TFT with the precise and multi-touch capabilities of capacitive touch screens.
Core Technical Features and Advantages
- High-quality display: Typically using IPS or other wide-viewing-angle technologies, they offer excellent color reproduction and wide viewing angles.
- Multi-touch: Capacitive touch screens support multi-touch (usually 2-10 points), enabling complex gestures such as zooming and rotating.
- High sensitivity and precision: CTP responds quickly and accurately.
- Durability: The surface is usually covered with a layer of protective glass (Cover Glass), which is hard and scratch-resistant.
- Aesthetic appeal: They can achieve a pure flat design, with a more modern and minimalist appearance.
- Customizable Cover Glass: The thickness, shape, silk-screen patterns, and surface treatments (AG anti-glare, AR anti-reflection, AF anti-fingerprint) of the Cover Glass can all be customized.
- Multiple interfaces: The display screen typically uses MIPI DSI or LVDS interfaces, while the touch screen uses I2C or USB interfaces.
Detailed Application Scenario Analysis
A. High-end Industrial HMI and Smart Terminals
- Specific devices: Advanced PLC control panels, data acquisition terminals, mobile work tablets, intelligent factory information boards.
- Application details: Users interact smoothly with complex industrial applications through touch operations, monitoring data, adjusting parameters, designing processes, and viewing reports. The IPS screen ensures accurate data observation from various angles, and multi-touch allows for chart zooming and process diagram dragging.
- Why it is suitable:
- Modern interaction experience: CTP provides a smooth interaction experience similar to smartphones/tablets, enhancing operational efficiency and user satisfaction.
- Complex interfaces: High resolution and IPS screens are suitable for displaying detailed graphic interfaces and large amounts of data.
- Ruggedness: Industrial-grade CTP solutions can be made waterproof, dustproof (IP-rated), impact-resistant, and capable of operating with gloves, adapting to harsh environments. Leehon can provide corresponding customization options.
- Design flexibility: The customization capability of the Cover Glass allows brands to achieve unique appearance designs and functional requirements (such as specific openings, button areas).
B. Medical Diagnostic and Treatment Equipment
- Specific devices: Bedside monitors, ultrasound diagnostic systems, endoscope system displays, laboratory analyzers, rehabilitation training devices.
- Application details: Doctors operate the equipment through the touch screen, reviewing patient records, selecting imaging modes, measuring lesion sizes (using multi-touch for marking and measurement), and adjusting treatment parameters. The IPS screen ensures accurate image color and no deviation when viewed from different angles.
- Why it is suitable:
- Precise operation: The high precision of CTP is crucial for medical operations (such as marking and measurement).
- Image quality: The color and viewing angle of the IPS screen are vital for interpreting medical images.
- Ease of cleaning and disinfection: The flat glass surface is easy to clean and disinfect, meeting the requirements of medical environments. The AF coating can reduce fingerprint residue.
- Reliability: Medical equipment requires high reliability, and CTP+TFT modules must undergo strict EMC (electromagnetic compatibility) and safety tests.
C. Intelligent Transportation and In-Vehicle Systems
- Specific devices: In-vehicle infotainment systems (IVI), smart rearview mirrors, bus stop announcement and fare terminals, charging station operation interfaces.
- Application details: Drivers or passengers operate navigation, music playback, vehicle settings, air conditioning control, etc., through the touch screen. Charging station users select charging modes, view fees, and make payments through the screen.
- Why it is suitable:
- Intuitive interaction: Touch operation conforms to modern user habits, especially in driving environments where quick and convenient operations are needed.
- Environmental adaptability: Automotive-grade modules must meet requirements for wide temperature ranges, vibration resistance, and interference resistance. High brightness (to cope with daylight) and AG (anti-glare) coatings are very important.
- Safety: CTP can be designed to be more robust, reducing the risk of breakage.
- Multimedia needs: TFT screens are suitable for displaying navigation maps, videos, and other content.
D. High-end Smart Home and Building Automation
- Specific devices: Advanced smart home central control screens, smart door locks with displays, smart speakers with screens, high-end hotel room control panels.
- Application details: Users control all smart home devices through an elegant graphic interface and smooth touch gestures, setting scenes, controlling audio-visual entertainment, and monitoring security. The IPS screen provides a better visual experience.
- Why it is suitable:
- User experience: CTP+IPS screens offer the best visual and interaction experience, in line with high-end positioning.
- Design sense: The flat design and customizable Cover Glass help integrate into home design.
- Functional integration: The screen serves as the entry point, integrating a rich set of functional controls.
Product 4: OLED Display Modules (Taking 0.96-inch and 1.3-inch 128×64 resolution PMOLED as examples)
OLED (Organic Light Emitting Diode) display technology, characterized by its self-luminous nature, offers significant advantages in terms of high contrast, wide viewing angles, fast response times, and low power consumption, making it highly suitable for small-sized, low-power applications that require excellent display quality.
Core Technical Features and Advantages
- Self-luminous: Each pixel emits light independently, eliminating the need for a backlight and allowing for a thinner structure.
- High contrast: Extremely high contrast ratios (often >10000:1) due to deep blacks (no light emission) and vibrant colors.
- Wide viewing angle: Minimal color and brightness variation across a wide viewing angle (up to 160° or more), ensuring clear visibility from various angles.
- Fast response: Pixel response times are in the microsecond range, making it ideal for dynamic content.
- Low power consumption: Particularly efficient when displaying dark or black content.
- Wide temperature range: Typically operates between -40°C to 85°C, making it suitable for various environmental conditions.
Detailed Application Scenario Analysis
A. Wearable Devices
- Specific devices: Smartwatches, fitness trackers, portable GPS trackers.
- Application details: Displaying time, steps, heart rate, notifications, and sports modes. These devices require small, lightweight, power-efficient screens that remain readable in outdoor conditions.
- Why it is suitable:
- High contrast and readability: OLED screens remain clear and visible in various lighting conditions.
- Low power consumption: Ideal for battery-constrained wearable devices.
- Thin and lightweight: The absence of a backlight allows for ultra-thin designs.
B. Portable Medical Devices
- Specific devices: Pulse oximeters, portable ECG monitors, smart pillboxes.
- Application details: Displaying key medical data such as SpO₂ levels, heart rate, ECG waveforms, and medication reminders.
- Why it is suitable:
- Clear display: High contrast ensures that critical medical data is easily readable.
- Low power consumption: Extends battery life for devices that need to operate for extended periods.
- Compact design: Small form factor fits into portable medical devices.
C. Consumer Electronics and IoT Devices
- Specific devices: Smart thermostats, environmental sensors, remote controls.
- Application details: Displaying temperature, humidity, air quality, device status, and control menus.
- Why it is suitable:
- Energy efficiency: Low power consumption is crucial for battery-powered IoT devices.
- High visibility: Wide viewing angles and high contrast make the displays easy to read.
- Aesthetic appeal: Thin and sleek design enhances the appearance of consumer electronics.
D. Smart Home and Industrial Applications
- Specific devices: Smart home control panels, industrial meters, and small control panels.
- Application details: Showing device status, control options, and real-time data in a compact and efficient manner.
- Why it is suitable:
- Cost-effective: Monochrome OLED displays offer a balance between performance and cost.
- Durability: Wide operating temperature range and low power consumption make them suitable for industrial environments.
Optional Product 5: Special Application LCD Modules (e.g., High Brightness TFT / Wide Temperature Monochrome LCD)
Leehon, as a solution provider, likely offers customized modules tailored for specific harsh environments or unique requirements.
Core Technical Features and Advantages (Taking High Brightness TFT as an example)
- High brightness: Brightness levels can reach 800 cd/m², 1000 cd/m², or higher, significantly exceeding standard indoor TFT displays.
- Sunlight readability: Combined with low reflectivity treatments (such as optical bonding or AR coating), these modules ensure clear visibility in outdoor environments.
- Thermal management: High brightness backlights generate more heat, necessitating thoughtful thermal design.
- Increased power consumption: Higher brightness levels result in higher power requirements.
Detailed Application Scenario Analysis (High Brightness TFT)
A. Outdoor Handheld Devices
- Specific devices: Surveying instruments (total stations, GPS handhelds), logistics terminals (PDAs), and outdoor inspection equipment.
- Application details: Users need to clearly see maps, measurement data, task instructions, and scan results in direct sunlight.
- Why it is suitable: Standard screens are nearly illegible in sunlight, making high brightness a necessity for outdoor use.
B. Automotive and Marine Instruments
- Specific devices: Motorcycle dashboards, agricultural machinery displays, and marine navigation systems.
- Application details: Drivers need to clearly see speed, RPM, fuel levels, navigation information, etc., in various weather and lighting conditions.
- Why it is suitable: Safety requires that instrument information is always readable. High brightness combined with wide temperature ranges and vibration resistance is essential.
C. Outdoor Advertising and Information Kiosks
- Specific devices: Digital signage, bus stop information screens, and outdoor self-service terminals.
- Application details: Displaying advertisements, notifications, and service information to the public in outdoor environments.
- Why it is suitable: High ambient light levels make standard brightness screens ineffective. High brightness is crucial for effective information dissemination.
Conclusion
Leehon Technology’s diverse range of LCD and OLED display modules, backed by robust customization capabilities, plays a vital role in modern electronics across various industries. Medium-sized TFT modules offer balanced performance and cost, making them ideal for industrial control, medical, and smart home applications. Monochrome graphic LCD modules continue to be essential for simple instrumentation and battery-powered devices due to their low power consumption and cost-effectiveness. TFT modules with capacitive touch screens represent the mainstream of modern interaction, providing excellent display quality and multi-touch capabilities for high-end industrial, medical, automotive, and smart devices. OLED modules, with their unique advantages of high contrast, wide viewing angles, and thin profiles, show great potential in wearables, portable devices, and applications requiring premium display quality.
Special application modules, such as high-brightness displays, meet specific needs in challenging environments like outdoor settings. Leehon’s ability to offer customized solutions ensures that clients can integrate display modules seamlessly into their final products, enhancing functionality, user experience, and adaptability to specific application requirements.
