Sharp LQ084V1DG22 | Engineered for Legacy Industrial HMI Durability
The Sharp LQ084V1DG22 is a purpose-built 8.4-inch TFT-LCD panel designed for applications where reliability, consistency, and long-term availability are paramount. Rather than chasing the latest specifications, this display delivers proven performance, making it the definitive choice for maintaining and extending the life of critical industrial equipment. It is engineered as a direct-fit replacement for a wide range of Human-Machine Interfaces (HMIs), control panels, and embedded systems that were designed around its specific technical footprint.
- Proven Industrial Reliability: Built by Sharp, this panel is designed to withstand the operational demands of industrial environments, offering stable performance across a wide temperature range.
- Seamless System Integration: Featuring a standard VGA (640x480) resolution and a 6-bit CMOS interface, the LQ084V1DG22 ensures drop-in compatibility with legacy host systems, eliminating the need for costly driver board or software redesigns.
- Consistent Optical Performance: The panel's specifications for brightness and contrast are tailored for indoor industrial settings, providing excellent clarity for numerical data, status indicators, and basic graphical interfaces.
- Long-Lifecycle Support: This model is a key component for the maintenance, repair, and overhaul (MRO) market, ensuring that valuable, field-deployed assets can remain operational for years to come.
Key Technical Specifications
This table provides at-a-glance parameters for system engineers and technicians evaluating the LQ084V1DG22 for repair or system integration. For a comprehensive list of electrical and optical characteristics, you can Download the LQ084V1DG22 Datasheet.
| Parameter | Specification |
|---|---|
| Manufacturer | Sharp |
| Screen Diagonal | 8.4 inches |
| Resolution | 640(RGB)×480, VGA |
| Display Technology | a-Si TFT-LCD |
| Brightness | 250 cd/m² (Typ.) |
| Contrast Ratio | 250:1 (Typ.) |
| Signal Interface | CMOS (1 ch, 6-bit) |
| Backlight | Single CCFL |
| Operating Temperature | -10 ~ 65 °C |
| Outline Dimensions | 199.5(W) × 149.5(H) × 12(D) mm |
Application Scenarios & Engineering Value
The true value of the Sharp LQ084V1DG22 lies not in pushing performance boundaries, but in providing stability for established systems. Its design directly addresses the pain points of engineers managing long-term industrial assets.
- CNC Machinery and PLC Panels: Many computer numerical control (CNC) and programmable logic controller (PLC) systems deployed in the last two decades were designed around VGA resolution displays with CMOS interfaces. The LQ084V1DG22 serves as a direct, form-fit-function replacement, minimizing downtime and validation efforts during repairs.
- Medical and Laboratory Instruments: Equipment with long certification cycles, such as patient monitors or diagnostic analyzers, cannot easily be updated with new display technologies. This panel ensures that these certified systems can be maintained with original-spec components, preserving their regulatory approval.
- Test and Measurement Equipment: For oscilloscopes, spectrum analyzers, and other test gear, clarity and reliability are more critical than high definition. This display provides a clear, stable canvas for waveforms and readings in environments where it needs to just work, every time. Exploring the fundamentals of TFT-LCD technology reveals why its maturity is an advantage in these fields.
Technical Deep Dive: The Advantage of Proven Technology
For engineers focused on maintenance and system longevity, the "legacy" technology in the LQ084V1DG22 is a strategic asset. The choice of an Amorphous Silicon (a-Si) TFT structure is a testament to its manufacturing maturity, cost-effectiveness, and proven durability in thermally demanding applications.
Critically, the combination of a CCFL backlight and a CMOS data interface is key to its role as a replacement part. A modern LED-backlit display with an LVDS interface would require a completely different backlight inverter and signal controller. Attempting such an upgrade in the field is often impractical and economically unfeasible. The LQ084V1DG22 eliminates this challenge, allowing technicians to restore a machine to its original operating condition with minimal electronic rework.
Frequently Asked Questions (FAQ)
Is the LQ084V1DG22 a good choice for brand-new product designs?
While technically possible, the LQ084V1DG22 is primarily optimized for supporting existing systems. For new designs, we would typically recommend exploring more modern industrial LCD displays that feature LED backlights for higher energy efficiency and LVDS or eDP interfaces for greater bandwidth. However, for projects that must interface with a specific legacy chipset, this panel remains a viable option. For expert advice on your specific application, please contact our technical team.
What are the considerations for the CCFL backlight's lifespan?
CCFL backlights have a defined operational life, typically rated in tens of thousands of hours to half-brightness. A key advantage for maintainability is that the CCFL assembly in many panels, including this one, is a replaceable component. This allows for refurbishment of the display unit, further extending the life of the host equipment. Proper industrial display maintenance and operating within the specified temperature range can help maximize its service life.
