Application of Kyocera 6.2-inch LCD screen TCG062HVLDA-G20 in transdermal testing equipment

Medical electronic devices are evolving from simply being “functionally usable” to offering “visually precise and user-friendly” experiences. Whether it’s ward monitors, ultrasound imaging systems, or transcutaneous transluminal imaging devices, their common characteristics are: real-time display, continuous operation, and zero-error reading. In these devices, the display screen is no longer an accessory but the central hub of system interaction.

Among LEEHON Technology’s many LCD screen cases, one transcutaneous transluminal transluminal imaging device uses a 6.2-inch TFT-LCD screen from Kyocera, the TCG062HVLDA-G20. Thanks to its excellent optical performance, stable industrial structure, and moderate power consumption, it is widely used in medical monitoring instruments.

I. What is a Transcutaneous Blood Gas Analyzer?
A transcutaneous blood gas analyzer is a medical device used for non-invasive monitoring of blood gas parameters (such as partial pressure of oxygen pO₂, partial pressure of carbon dioxide pCO₂, and oxygen saturation SpO₂) and related physiological indicators. It uses skin electrode sensing and infrared detection technology to acquire real-time changes in gas concentrations on the patient’s skin, thereby calculating blood gas parameters.

Compared to traditional blood gas analyzers, which require blood draws and are cumbersome to operate, transcutaneous blood gas analyzers offer the following advantages:

Non-invasive operation: Skin detection avoids the risk of infection;

Real-time monitoring: Records trends continuously for hours or even 24/7;

High sensitivity: Maintains accuracy even in environments with weak signals, such as those affecting newborns and post-operative patients;

Portability: Some models integrate batteries and wireless transmission modules, facilitating bedside or outdoor use.

These characteristics place stringent requirements on the display system: the device must remain clear, stable, low-power, and flicker-free under various lighting, temperature, and usage duration conditions. This is the fundamental reason for choosing an industrial-grade LCD screen.

Application Solution of Kyocera 6.2-inch LCD Screen in Transcutaneous Microsurgical Equipment (TCG062HVLDA-G20)

II. Requirements of Transcutaneous Microsurgical Equipment for LCD Screens
The selection process is essentially a matching of “medical display needs” with “industrial LCD performance.” For transcutaneous microsurgical equipment, the following six indicators are most critical:

1. Brightness and Contrast Ratio
   The equipment may be used in bright wards, operating rooms, or even mobile nursing carts. The screen brightness needs to be high enough to resist external light interference. Generally, ≥300 cd/m² and a contrast ratio ≥400:1 are recommended to ensure clear and distinct data display.
2. Resolution and Screen Ratio
   Transcutaneous microsurgical equipment mainly displays curves, values, trend graphs, and warning information. The widescreen design of a 6.2-inch LCD screen (640×240) has a significant advantage in horizontal information display, allowing for the simultaneous display of three to four parameter curves, avoiding frequent interface switching.
3. Wide Temperature Range and Anti-interference Capability
   Medical equipment may operate for extended periods in incubators, air-conditioned wards, or laboratories. The LCD screen must have a wide temperature range (recommended -20°C to 70°C) and pass EMI electromagnetic compatibility design to prevent signal drift or data flicker.
4. Power Consumption and Lifespan: 24-hour operation places a severe strain on the backlight system. Industrial screens typically have an LED lifespan of ≥40,000 hours and independent drive circuitry to ensure stable brightness and minimal degradation.
5. Surface Treatment and Viewing Angle: Medical equipment is often observed by multiple people simultaneously, requiring a wide viewing angle and anti-glare design. Mirrored screens enhance color contrast but may reflect light in strong light; matte screens have less reflection but slightly softer colors. A balance must be struck based on the application scenario.
6. Supply Stability and Certification System: Medical equipment has a long lifespan (typically 5-10 years), requiring a guaranteed long-term supply of LCD modules and a strict quality traceability system (ISO13485, RoHS, REACH, etc.).

Among these specifications, the Kyocera TCG 062HVLDA-G20 almost perfectly meets the requirements of transcutaneous radiography.

III. Detailed Specifications of Kyocera TCG062HVLDA-G20 LCD Screen

Project	Technical Specifications
Brand	Kyocera
Model	TCG062HVLDA-G20
Size	6.2-inch TFT-LCD module
Resolution	640(RGB)×240(HVGA), 109PPI
Display Area	147.84×55.44mm
Dimensions	173×70×7.2mm
Brightness	300cd/m²
Contrast Ratio	500:1
Viewing Angle	80° left/right/up/down (CR≥5)
Operating Mode	TN constant white display, transmissive
Display Colors	262K colors (47% NTSC)
Response Time	15ms rise/20ms fall
Backlight System	White WLED, 40,000-hour lifespan, including LED driver
Interface Type	ParallelRGB (1ch, 6-bit), 40 Pins
Drive Voltage	3.3V (Typ.)
Surface Finish	Mirror finish (Haze 0%)
Operating temperature	-20°C to +70°C
Storage temperature	-30°C to +80°C
Weight	Approx. 105g
Applications	Medical monitoring, industrial instruments, control terminals

Behind these data lies an industrial-grade LCD module designed for long-term operation and precise display.

IV. Why Choose This LCD Screen?

1. Long Lifespan and High Reliability Designed for Instrumentation Scenarios
   This model utilizes Kyocera’s proprietary LCD materials and LED backlight system, ensuring stable brightness output even in high-temperature environments. The backlight lifespan reaches 40,000 hours, meeting the continuous operation requirements of transcutaneous transluminal radiography.
2. Ultra-Wide Aspect Ratio, Optimized Medical Data Layout
   Traditional 4:3 or 16:9 screens tend to be crowded when displaying multi-parameter waveforms. The TCG062HVLDA-G20 uses a more 21:9 aspect ratio, allowing blood gas trend lines, real-time curves, and text blocks to be displayed simultaneously without page turning, reducing the probability of doctor errors.
3. Mirror Surface + 300cd/m² Brightness
   The mirror design ensures a clear, sharp image with saturated colors. Combined with medium-brightness backlighting, it resists ward lighting without causing eye strain. For medical personnel continuously monitoring equipment, this visual balance is particularly important.
4. Wide Temperature Range and Anti-interference Design
   In environments such as laboratories and intensive care units, equipment often needs to be placed near heat sources or air conditioning vents. Its wide temperature range of -20°C to 70°C ensures that the liquid crystal molecules can still respond quickly under extreme conditions, without “slow shadows” or “reaction lag.”

Simultaneously, the screen’s ParallelRGB interface structure has good anti-interference properties, making it suitable for the EMC design of medical motherboards.

5. Low Power Consumption and Standardized Interface

3.3V low-voltage drive means less heat generation and power consumption. The 40-pin standard interface is directly compatible with motherboards from multiple brands, facilitating overall system design and future maintenance.

V. Features and Advantages for Transcutaneous Imaging Systems
The significance of applying TFT-LCD to transcutaneous imaging systems lies in providing doctors with a real-time, intuitive, and comparable data display platform.

1. Parallel Display of Digital and Waveform Data
   The 640×240 resolution is sufficient to simultaneously display multiple values, alarm icons, and waveform curves. 1. Doctors can simultaneously monitor oxygen and carbon dioxide trends, facilitating timely assessment of the patient’s condition.
2. Stable Image and Rapid Response: A 15/20ms response time ensures smooth waveform display without delay or ghosting. This parameter is crucial for rapidly changing blood gas curves.
3. All-Weather Visual Performance: Clearly visible under bright daylight and soft image under low light conditions at night. Properly controlled reflection from the mirror surface prevents data loss under strong light.
4. Slim and Lightweight Design for Easy Integration: Measuring only 7.2mm thick and weighing 105g, it can be easily installed in portable or embedded transcutaneous transluminal scanners. The smaller overall thickness facilitates portability or inclusion in mobile testing carts.
5. Reliable Operation and Long-Life Backlight: Transcutaneous transluminal scanners typically operate continuously for over 12 hours. The LCD screen’s LED backlight employs a constant current design with a low decay rate, ensuring consistent color temperature over the long term and reducing visual distortion caused by brightness reduction.

Application Solution of Kyocera 6.2-inch LCD Screen TCG062HVLDA-G20 in Transdermal Imaging Equipment

VI. Installation and Usage Precautions

Although this screen has a robust structure and stable performance, the following points should still be noted during the integration into medical equipment:

1. Electrical Compatibility: Confirm that the motherboard signal interface is ParallelRGB and the output bit width is 6-bit; otherwise, screen distortion or color deviation may occur.
2. Backlight Driver Matching: Although the screen has a built-in LED driver, the external current should be limited within the specifications to avoid backlight attenuation due to excessive current.
3. Anti-static Protection: Anti-static mats and wrist straps should be used in the medical device assembly environment to avoid damaging the LCD driver IC.
4. Heat Dissipation and Structural Installation: Although the backlight module has low power consumption, it will still accumulate heat during long-term operation; the heat dissipation path should be kept unobstructed.
5. Cleaning and Maintenance: Do not use cleaning agents with high concentrations of ammonia or alcohol on the mirror screen. Use medical wipes or pure water to gently wipe it.
6. Long-term storage: Keep dry and well-ventilated during storage, avoiding direct sunlight; recommended temperature: 0-40°C, relative humidity: ≤70%.

These seemingly insignificant details directly affect the stability and lifespan of medical equipment.

VII. Development Trends of Medical Displays

LCD technology in the medical device field has entered a stage of “refinement and humanization.” Future transdermal diagnostic instrument display modules will exhibit the following trends:

High resolution and high contrast: Gradually transitioning from 640×240 to 800×480 or even Full-HD levels;

1. Integrated touch control: Utilizing capacitive screens or antibacterial touch glass to improve operational efficiency;
2. Low-power energy-saving design: Supporting dynamic backlight adjustment and intelligent sleep mode;
3. Integrated medical information display: Connectable to hospital systems, enabling multi-screen interaction and data sharing;
4. Environmentally friendly materials and long supply cycles: Compliant with RoHS and REACH standards, reducing replacement risks.

Kyocera, a manufacturer with a long history of expertise in industrial and medical displays, has incorporated these new technologies into its product lines, giving its LCD modules a significant advantage in reliability and lifespan.

The value of medical device displays lies not only in “seeing” but also in “seeing accurately.” Kyocera’s TCG062HVLDA-G20, with its superior industrial-grade stability, mirror-like visual experience, low power consumption, and wide-temperature performance, perfectly meets the multiple requirements of transcutaneous transdermal imaging systems for real-time performance, clarity, and reliability.

It provides more than just a screen; it offers a guarantee for the secure transmission of medical information.

1. In the eyes of doctors, it means clearer blood gas curves;
2. In the eyes of engineers, it means a more stable system structure;
3. In the eyes of patients, it represents precision and trust.

High-quality LCD screens like the TCG062HVLDA-G20 will continue to play a crucial role in the medical display field—making “visualized medicine” more accurate and ensuring that every minute change in data is clearly visible.

Hangzhou LEEHON Technology Co., Ltd., as a provider of LCD display driver solutions for the industrial field, has established in-depth cooperative relationships with many leading global LCD panel manufacturers such as BOE, TIANMA, IVO, AUO, Innolux, and Kyocera, and professionally supplies multi-brand, full-series industrial-grade LCD displays and customized solutions.