LMG7420PLFC-X REV.B KOE 5.1" 240×128 FSTN-LCD Panel Display Screen for IndustrialLMG7420PLFC-X REV.B is a 5.1-inch LCD display module manufactured by KOE, featuring a resolution of 240 × 128 pixels. This compact and reliable monochrome graphic display offers high contrast, clear readability, and stable performance for a range of industrial and commercial applications. It is commonly used in instrumentation panels, handheld data terminals, basic control interfaces, and medical monitoring devices where straightforward alphanumeric or graphical information is displayed. Engineered for durability in demanding environments, this direct-fit KOE component ensures seamless compatibility and serves as a practical replacement or upgrade, effectively restoring sharp and functional visual output to equipment designed for this specific model.
| Brand |
KOE |
| Model |
LMG7420PLFC-X REV.B |
| Panel-type |
LCM , FSTN-LCD |
| Size |
5.1" |
| Resolution |
240×128 |
| Display Area |
119.97(H) × 63.97(V) mm |
| Bezel Opening |
124.0(H) × 70.0(V) mm
|
| Outline Size |
159.4(W)×101(H)×12(D) mm
|
| Display Mode |
STN, Black/White (Negative), Transmissive |
| Brightness |
150 cd/m² (Typ.) |
| Contrast Ratio |
20:1 (Typ.) (TM) |
| Response Time |
160/110 (Typ.)(Tr/Td) |
| Viewing Angle |
40/40/40/40 (Typ.)(CR≥2) |
| Best View on |
6 o'clock |
| Display Colors |
Monochrome |
| Frequency |
75Hz |
| Lamp Type |
CCFL [1 pcs] , 50K hours , W/O Driver |
| Signal Interface |
8-bit parallel 20 pins Connector |
| Touch Screen |
Without |
| Input Voltage |
5.0V (Typ.) |
| Operating Temp |
0 ~ 50 °C |
| Storage Temp |
-20 ~ 60 °C |
KOE
Specific applications include:
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1. Industrial Automation & Control Panels (HMI):
This is the primary application sector for the LMG7420PLFC-X. It is extensively used in Human-Machine Interfaces (HMIs) for factory automation systems, PLC (Programmable Logic Controller) programming terminals, and CNC machine operation panels. The high-contrast FSTN technology ensures clear visibility of status data, error codes, and process parameters under varying factory lighting conditions, including direct sunlight or dimly lit control rooms.
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2. Medical Instrumentation:
The module is frequently integrated into patient monitoring systems, infusion pumps, and clinical diagnostic analyzers. Its monochrome display is ideal for presenting vital signs, numerical data, and waveforms with high stability and low power consumption. The lack of color reduces distraction for medical staff, while the long-life CCFL backlight (common in this series) ensures continuous operation without frequent maintenance in sterile environments.
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3. Telecommunications & Network Equipment:
Historically, this display has been a standard component in telecom switching systems, base station controllers, and network management terminals. It provides operators with essential system status information, alarm logs, and configuration menus. Its resistance to electromagnetic interference (EMI) makes it suitable for installation within dense telecom racks.
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4. Test and Measurement Instruments:
Engineers utilize the LMG7420PLFC-X in portable and benchtop test equipment such as oscilloscopes, multimeters, and spectrum analyzers. The 240×128 resolution offers sufficient detail for displaying measurement graphs and numerical readouts, while the rugged module design withstands the vibrations and shocks common in field testing scenarios.
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5. Legacy System Maintenance & Retrofitting:
Given its age and continued availability in the secondary market, a significant application today is the maintenance and repair of legacy industrial systems. Many factories and infrastructure facilities still operate machinery designed in the 1990s and early 2000s that specifically requires the form factor, pinout, and timing characteristics of the LMG7420PLFC-X. It serves as a critical replacement part to extend the lifecycle of expensive capital equipment without requiring a full system overhaul.
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6. Transportation & Aviation Ground Support:
The display is also found in vehicle-mounted computers for logistics fleets and aviation ground support equipment. Its ability to operate reliably within a defined temperature range and withstand vibration makes it fit for use in dashboard displays, ticketing machines, and cargo handling systems.
Q: May I ask what kind of packaging you use?
A: We use anti-static packaging and shock-resistant packaging.Anti-static packaging: Ensure that the packaging materials used comply with ESD standards, including anti-static bags and foam.Shock-resistant packaging: Use custom foam and sturdy outer boxes to ensure that they can pass through regular transportation tests (such as dropping and vibration).So the goods arrive at your hands in perfect condition.
Q: Do you conduct tests before shipment?
A: Yes, we strictly follow 100% pre-shipment testing procedures.Our testing process is standardized to ensure that every LCD panel sent to you is in compliance with specifications and is fully functional.
