NL322BC35-20R LCD Panel for NEC
- Industrial LCD display
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Industrial Products
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HMI Full Machine Whole unit
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Name: NL322BC35-20R.pdfNLT NL3224BC35-20R 5.5-Inch TFT LCD Panel
The NL3224BC35-20R is a 5.5-inch a-Si TFT (amorphous Silicon Thin Film Transistor) Active Matrix LCD module with dual-mode display capability. This panel was originally developed and specified by NEC Corporation and is now manufactured by NLT Technologies, Ltd. — a company formed from the spin-off of NEC's LCD manufacturing operations, which retained the right to manufacture and sell certain NEC-designed LCD panels under the NLT brand. The NL3224BC35-20R is the NLT-branded equivalent of the original NEC NL3224BC35-20, using the same datasheet (EN0556EJ3V0DS00) and the same product specifications. The invshop listing correctly identifies this as an "Original NEC" heritage product — NLT is the direct technical and manufacturing successor to NEC for these LCD panel lines.
About NLT Technologies and NEC LCD History
NLT Technologies, Ltd. is a Japanese company that originated from NEC Corporation's LCD display division. In the early 2000s, NEC spun off its LCD manufacturing operations into a separate entity, which eventually became NLT Technologies. NLT continues to manufacture LCD modules originally designed by NEC, including the NL3224BC35 series and many other NL/NEC series panels. NLT panels are widely used in industrial, medical, automotive, and instrumentation applications globally. The NL3224BC35-20R is part of this legacy product line — it carries the NLT model number but is built to the same NEC-developed specifications as the original NEC NL3224BC35-20, and uses the same datasheet and dimensional standards.
Dual-Mode Display Architecture
The NL3224BC35-20R supports two display modes selectable by the host system:
QVGA mode (320x240): At the panel's native dot resolution, each LCD dot corresponds to one pixel — maximum sharpness. QVGA mode is the most common operating mode for this panel at 60Hz vertical frequency.
VGA mode (640x480): The panel scales a 640x480 input across the 320x240 physical dot array, effectively 2x pixel doubling in each direction. The NEC signal processing board inside the module handles the scaling internally.
This dual-mode capability was a feature of NEC's NL3224 series panels, giving system designers flexibility to use either the native QVGA resolution (for best sharpness) or standard VGA output from common graphics controllers (for broader software compatibility).
Technical Specifications
| Specification | Value |
|---|---|
| Brand | NLT Technologies (NEC LCD heritage) |
| Model | NL3224BC35-20R |
| Display Size | 5.5 inches diagonal (13.9 cm) |
| Display Area | 111.4(W) x 83.5(H) mm |
| Resolution (native dot) | 320 x 240 (QVGA) |
| VGA Scaling Mode | 640 x 480 input, displayed on 320x240 dot array |
| Display Colors | 262,144 (RGB 6-bit, 64 gray levels per color) |
| Pixel Arrangement | RGB Vertical Stripe |
| Dot Pitch | 0.1160(W) x 0.3480(H) mm |
| Pixel Pitch | 0.3480(W) x 0.3480(H) mm (square) |
| Display Mode | a-Si TFT Active Matrix, Transmissive |
| Module Size | 134.0(W) x 104.5(H) x 12.5(D) mm |
| Weight | 210g (typ.) |
| Contrast Ratio | 400:1 (typ.) |
| Viewing Angle | Min. 80 deg all directions (CR>=10) |
| Signal Interface | 6-bit digital RGB signals |
| Scan Direction | Reversible (software-selectable) |
| Backlight Type | Edge-light CCFL (CCFT), replaceable lamp, inverter-less |
| Power Supply (logic) | 5.0V DC |
| Operating Temperature | -20 to +70 degC |
| Storage Temperature | -25 to +75 degC |
| Certifications | UL/c-UL (File E170632) |
| Quality | Test OK before shipment |
| RMA Period | 3 months |
| Stock | 130 units |
Applications
Industrial PC Displays: The NL3224BC35-20R was specifically listed in the NEC datasheet under "Industrial PC" as a primary application. The panel's rugged construction, wide temperature range (-20 to +70 degC), and UL certification make it suitable for factory automation and industrial computing terminals.
Control System Display Terminals: The reversible scan direction and QVGA/VGA dual-mode capability made this panel popular for industrial HMI and control system operator interfaces. The 5.5-inch size fits compact control panel designs.
POS (Point-of-Sale) Terminals: Retail checkout displays and restaurant ordering terminals. The panel's proven reliability and UL certification facilitated POS equipment qualification.
Medical Device Displays: Patient monitoring and diagnostic equipment requiring UL-certified display modules with consistent color and wide viewing angles.
Automotive Displays: In-vehicle information displays, GPS navigation units, and rear-seat entertainment equipment from the era when NLT/NEC panels were specified by automotive OEMs.
Legacy Equipment Replacement: The NL3224BC35-20R is a mature, established product — suitable for maintaining and repairing industrial equipment, POS terminals, and medical instruments that use this specific panel as a replacement spare.
Key Features and Design Notes
Inverter-less Edge-light CCFL: The NL3224BC35-20R uses an edge-light (rather than direct) CCFL backlight configuration, which NEC termed "inverter-less" — meaning the inverter electronics are built into the module's signal processing board, eliminating the need for a separate external inverter module. This simplifies system integration compared to panels requiring a separate inverter.
Replaceable Lamp: The CCFL backlight lamp is user-replaceable, extending the panel's useful life. When the CCFL eventually degrades, it can be replaced without replacing the entire LCD module.
Reversible Scan Direction: The panel supports software-selectable scan direction, allowing the system designer to flip the display image vertically without hardware changes — useful for different mounting orientations in equipment.
NLT = NEC Manufacturing Line: The NLT NL3224BC35-20R is not a third-party clone or compatible panel — it is manufactured by the same company that produced the original NEC NL3224BC35-20, using identical specifications and the same NEC datasheet EN0556EJ3V0DS00. Customers specifying NEC NL3224BC35-20 can substitute the NLT NL3224BC35-20R directly.
Frequently Asked Questions
| Question | Answer |
|---|---|
| Is this an NEC panel or a NLT panel? The listing says 'Original NEC'. | The NL3224BC35-20R is an NLT Technologies panel that is the direct successor to the NEC NL3224BC35-20. NLT Technologies was formed when NEC spun off its LCD manufacturing operations. NLT now manufactures LCD panels that were originally designed by NEC, using the same specifications, datasheets, and manufacturing processes. The NLT NL3224BC35-20R and the NEC NL3224BC35-20 are effectively the same panel — the NLT part number is the re-branded version of the original NEC design. Both are valid substitutes for each other in industrial applications. |
| What is the difference between QVGA and VGA modes? | The panel has 320x240 physical LCD dots. In QVGA mode, the host system sends a 320x240 signal and each dot displays one pixel — maximum sharpness. In VGA mode, the host system sends the standard 640x480 VGA signal and the panel's internal signal processing board scales it 2x in each direction (each input pixel becomes a 2x2 block of dots), filling the 320x240 dot array. QVGA mode is sharper; VGA mode uses a standard video format that most graphics controllers support natively. |
| What does 'inverter-less' CCFL mean? | Most CCFL-backlit LCD panels require a separate, external CCFL inverter module to provide the high voltage needed to start and operate the CCFL tube. The NL3224BC35-20R is designed as inverter-less — the CCFL inverter electronics are integrated into the panel's signal processing board. This simplifies system design: you only need to provide 5V power — no separate inverter module is required. The CCFL backlight is powered directly from the integrated inverter circuit on the panel module. |
| Can the CCFL backlight be replaced when it fails? | Yes — the CCFL backlight lamp in the NL3224BC35-20R is designed to be replaceable, which extends the useful life of the panel. When the CCFL degrades (typically after 15,000-30,000 hours of operation), a replacement CCFL of the same type can be installed. This is a specialized repair procedure requiring disassembly of the panel. CCFL replacement is commonly performed by companies specializing in industrial LCD repair. |
| What is the weight and size of this panel? | The NL3224BC35-20R module dimensions are 134.0(W) x 104.5(H) x 12.5(D) mm and the weight is approximately 210g (typical). This is a compact 5.5-inch panel — the 111.4x83.5mm active display area fits within the module outline. The invshop listing does not show a weight value separately, but the 210g specification from the official datasheet is the correct weight for this module. |
NLT NL3224BC35-20R 5.5-Inch TFT LCD Panel
The NL3224BC35-20R is a 5.5-inch a-Si TFT (amorphous Silicon Thin Film Transistor) Active Matrix LCD module with dual-mode display capability. This panel was originally developed and specified by NEC Corporation and is now manufactured by NLT Technologies, Ltd. — a company formed from the spin-off of NEC's LCD manufacturing operations, which retained the right to manufacture and sell certain NEC-designed LCD panels under the NLT brand. The NL3224BC35-20R is the NLT-branded equivalent of the original NEC NL3224BC35-20, using the same datasheet (EN0556EJ3V0DS00) and the same product specifications. The invshop listing correctly identifies this as an "Original NEC" heritage product — NLT is the direct technical and manufacturing successor to NEC for these LCD panel lines.
About NLT Technologies and NEC LCD History
NLT Technologies, Ltd. is a Japanese company that originated from NEC Corporation's LCD display division. In the early 2000s, NEC spun off its LCD manufacturing operations into a separate entity, which eventually became NLT Technologies. NLT continues to manufacture LCD modules originally designed by NEC, including the NL3224BC35 series and many other NL/NEC series panels. NLT panels are widely used in industrial, medical, automotive, and instrumentation applications globally. The NL3224BC35-20R is part of this legacy product line — it carries the NLT model number but is built to the same NEC-developed specifications as the original NEC NL3224BC35-20, and uses the same datasheet and dimensional standards.
Dual-Mode Display Architecture
The NL3224BC35-20R supports two display modes selectable by the host system:
QVGA mode (320x240): At the panel's native dot resolution, each LCD dot corresponds to one pixel — maximum sharpness. QVGA mode is the most common operating mode for this panel at 60Hz vertical frequency.
VGA mode (640x480): The panel scales a 640x480 input across the 320x240 physical dot array, effectively 2x pixel doubling in each direction. The NEC signal processing board inside the module handles the scaling internally.
This dual-mode capability was a feature of NEC's NL3224 series panels, giving system designers flexibility to use either the native QVGA resolution (for best sharpness) or standard VGA output from common graphics controllers (for broader software compatibility).
Technical Specifications
| Specification | Value |
|---|---|
| Brand | NLT Technologies (NEC LCD heritage) |
| Model | NL3224BC35-20R |
| Display Size | 5.5 inches diagonal (13.9 cm) |
| Display Area | 111.4(W) x 83.5(H) mm |
| Resolution (native dot) | 320 x 240 (QVGA) |
| VGA Scaling Mode | 640 x 480 input, displayed on 320x240 dot array |
| Display Colors | 262,144 (RGB 6-bit, 64 gray levels per color) |
| Pixel Arrangement | RGB Vertical Stripe |
| Dot Pitch | 0.1160(W) x 0.3480(H) mm |
| Pixel Pitch | 0.3480(W) x 0.3480(H) mm (square) |
| Display Mode | a-Si TFT Active Matrix, Transmissive |
| Module Size | 134.0(W) x 104.5(H) x 12.5(D) mm |
| Weight | 210g (typ.) |
| Contrast Ratio | 400:1 (typ.) |
| Viewing Angle | Min. 80 deg all directions (CR>=10) |
| Signal Interface | 6-bit digital RGB signals |
| Scan Direction | Reversible (software-selectable) |
| Backlight Type | Edge-light CCFL (CCFT), replaceable lamp, inverter-less |
| Power Supply (logic) | 5.0V DC |
| Operating Temperature | -20 to +70 degC |
| Storage Temperature | -25 to +75 degC |
| Certifications | UL/c-UL (File E170632) |
| Quality | Test OK before shipment |
| RMA Period | 3 months |
| Stock | 130 units |
Applications
Industrial PC Displays: The NL3224BC35-20R was specifically listed in the NEC datasheet under "Industrial PC" as a primary application. The panel's rugged construction, wide temperature range (-20 to +70 degC), and UL certification make it suitable for factory automation and industrial computing terminals.
Control System Display Terminals: The reversible scan direction and QVGA/VGA dual-mode capability made this panel popular for industrial HMI and control system operator interfaces. The 5.5-inch size fits compact control panel designs.
POS (Point-of-Sale) Terminals: Retail checkout displays and restaurant ordering terminals. The panel's proven reliability and UL certification facilitated POS equipment qualification.
Medical Device Displays: Patient monitoring and diagnostic equipment requiring UL-certified display modules with consistent color and wide viewing angles.
Automotive Displays: In-vehicle information displays, GPS navigation units, and rear-seat entertainment equipment from the era when NLT/NEC panels were specified by automotive OEMs.
Legacy Equipment Replacement: The NL3224BC35-20R is a mature, established product — suitable for maintaining and repairing industrial equipment, POS terminals, and medical instruments that use this specific panel as a replacement spare.
Key Features and Design Notes
Inverter-less Edge-light CCFL: The NL3224BC35-20R uses an edge-light (rather than direct) CCFL backlight configuration, which NEC termed "inverter-less" — meaning the inverter electronics are built into the module's signal processing board, eliminating the need for a separate external inverter module. This simplifies system integration compared to panels requiring a separate inverter.
Replaceable Lamp: The CCFL backlight lamp is user-replaceable, extending the panel's useful life. When the CCFL eventually degrades, it can be replaced without replacing the entire LCD module.
Reversible Scan Direction: The panel supports software-selectable scan direction, allowing the system designer to flip the display image vertically without hardware changes — useful for different mounting orientations in equipment.
NLT = NEC Manufacturing Line: The NLT NL3224BC35-20R is not a third-party clone or compatible panel — it is manufactured by the same company that produced the original NEC NL3224BC35-20, using identical specifications and the same NEC datasheet EN0556EJ3V0DS00. Customers specifying NEC NL3224BC35-20 can substitute the NLT NL3224BC35-20R directly.
Frequently Asked Questions
| Question | Answer |
|---|---|
| Is this an NEC panel or a NLT panel? The listing says 'Original NEC'. | The NL3224BC35-20R is an NLT Technologies panel that is the direct successor to the NEC NL3224BC35-20. NLT Technologies was formed when NEC spun off its LCD manufacturing operations. NLT now manufactures LCD panels that were originally designed by NEC, using the same specifications, datasheets, and manufacturing processes. The NLT NL3224BC35-20R and the NEC NL3224BC35-20 are effectively the same panel — the NLT part number is the re-branded version of the original NEC design. Both are valid substitutes for each other in industrial applications. |
| What is the difference between QVGA and VGA modes? | The panel has 320x240 physical LCD dots. In QVGA mode, the host system sends a 320x240 signal and each dot displays one pixel — maximum sharpness. In VGA mode, the host system sends the standard 640x480 VGA signal and the panel's internal signal processing board scales it 2x in each direction (each input pixel becomes a 2x2 block of dots), filling the 320x240 dot array. QVGA mode is sharper; VGA mode uses a standard video format that most graphics controllers support natively. |
| What does 'inverter-less' CCFL mean? | Most CCFL-backlit LCD panels require a separate, external CCFL inverter module to provide the high voltage needed to start and operate the CCFL tube. The NL3224BC35-20R is designed as inverter-less — the CCFL inverter electronics are integrated into the panel's signal processing board. This simplifies system design: you only need to provide 5V power — no separate inverter module is required. The CCFL backlight is powered directly from the integrated inverter circuit on the panel module. |
| Can the CCFL backlight be replaced when it fails? | Yes — the CCFL backlight lamp in the NL3224BC35-20R is designed to be replaceable, which extends the useful life of the panel. When the CCFL degrades (typically after 15,000-30,000 hours of operation), a replacement CCFL of the same type can be installed. This is a specialized repair procedure requiring disassembly of the panel. CCFL replacement is commonly performed by companies specializing in industrial LCD repair. |
| What is the weight and size of this panel? | The NL3224BC35-20R module dimensions are 134.0(W) x 104.5(H) x 12.5(D) mm and the weight is approximately 210g (typical). This is a compact 5.5-inch panel — the 111.4x83.5mm active display area fits within the module outline. The invshop listing does not show a weight value separately, but the 210g specification from the official datasheet is the correct weight for this module. |
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