Content last revised on January 14, 2026
Kyocera KG057QV1CA-G20 | Robust QVGA Display for Demanding Industrial Environments
The Kyocera KG057QV1CA-G20 is a 5.7-inch QVGA display engineered for longevity and consistent performance in applications where reliability is non-negotiable. This is not a display for consumer electronics; it is a purpose-built component for industrial HMIs, test and measurement equipment, and legacy system upgrades that demand unwavering operational stability over a long lifecycle. Its design prioritizes durability and clarity under challenging conditions over raw pixel density.
Product Highlights: Engineering for Endurance
- Exceptional Durability: Built to withstand the rigors of industrial settings, featuring a robust mechanical design and components selected for their long-term stability.
- Wide Operating Temperature Range: With an operational range of -20°C to 70°C, the KG057QV1CA-G20 performs reliably in unconditioned environments, from cold storage facilities to factory floors.
- Sunlight Readability: The transflective display technology ensures clear visibility in both high ambient light and low-light conditions, a critical feature for outdoor or field-use equipment.
- Integrated CCFL Backlight System: Includes an integrated CCFL inverter, simplifying the system design process and reducing the need for external driver components.
Key Parameter Overview
For engineers requiring at-a-glance technical data, the following table outlines the core specifications of the KG057QV1CA-G20. A more detailed datasheet is available for comprehensive design review. Download the KG057QV1CA-G00 Datasheet (Reference).
| Parameter | Specification |
|---|---|
| Manufacturer | Kyocera |
| Model | KG057QV1CA-G20 |
| Screen Size | 5.7 inch |
| Resolution | 320(RGB)×240, QVGA |
| Display Technology | CSTN-LCD, Transflective |
| Brightness | 150 cd/m² (Typ.) |
| Contrast Ratio | 40:1 (Typ.) (Transmissive) |
| Viewing Angle | 40/40/25/40 (Typ.)(CR≥4) |
| Operating Temperature | -20 ~ 70 °C |
| Storage Temperature | -30 ~ 80 °C |
| Backlight | CCFL with Integrated Inverter |
Application Scenarios & Value Proposition
The true value of the Kyocera KG057QV1CA-G20 is revealed in its target applications, where its specific features solve critical engineering problems.
- Industrial Process Control: On factory floors, where temperatures fluctuate and ambient lighting varies, the display's wide thermal range and transflective properties ensure operators always have a clear, readable HMI. This directly impacts operational efficiency and reduces user error.
- Portable Test & Measurement Equipment: For field technicians, a device's utility is defined by its performance outdoors. The transflective screen is a significant advantage, providing excellent sunlight readability without draining battery life on maximum backlight brightness.
- Medical Monitoring Devices: In medical environments, long-term operational reliability is paramount. The KG057QV1CA-G20's proven design and stable component sourcing make it a trusted choice for vital sign monitors and diagnostic equipment.
- Legacy System Retrofits: The standard QVGA resolution and straightforward interface make this display an ideal drop-in replacement for aging or discontinued panels in long-life industrial machinery, extending the usable life of valuable capital equipment.
Technical Deep-Dive: The Engineering Behind the Reliability
CSTN (Color Super-Twist Nematic) Technology
While modern TFT-LCD technology dominates consumer markets, the CSTN technology in the KG057QV1CA-G20 offers distinct advantages for industrial use. Its simpler pixel structure, provided by major manufacturers like AUO, is inherently robust and less susceptible to the types of pixel defects that can affect more complex displays in high-vibration or high-shock environments. This translates to a lower total cost of ownership through enhanced durability and longevity.
Transflective Display Layer
The core of its versatility is the transflective property. This is achieved through a display layer that is partially transmissive and partially reflective. In dark conditions, the CCFL backlight transmits through the layer to illuminate the screen. In bright ambient light, the external light is reflected off the rear of the layer, using the ambient light itself to illuminate the display. This dual-mode operation is key to its utility in variable lighting and is far more power-efficient than simply overpowering sunlight with a high-nit backlight.
Frequently Asked Questions (FAQ)
Q1: Is the KG057QV1CA-G20 a direct replacement for older Kyocera or other manufacturer's 5.7" QVGA panels?
A: In many cases, yes. Its standard QVGA resolution, physical footprint, and integrated inverter are designed to align with common industrial standards. However, it is critical to verify the connector type, pinout, and signaling logic against your existing system's requirements. If you need assistance with cross-referencing, please contact our technical team for a compatibility analysis.
Q2: What are the long-term availability prospects for a CCFL-based display?
A: Kyocera has a long history of supporting industrial product lines for extended periods. The KG057QV1CA-G20 is designed for long-lifecycle equipment. While LED is the newer standard, CCFL technology is mature and stable, ensuring a reliable supply chain for committed industrial applications for years to come. This makes it a safe choice for products with a 10+ year service life expectancy.
