NEC NL6448BC33-54 10.4 Inch TFT LCD Panel

The NEC NL6448BC33-54 is a 10.4-inch industrial TFT-LCD panel designed for equipment requiring a 640 × 480 VGA resolution. It uses a-Si TFT-LCD technology with a traditional 4:3 aspect ratio and a TN, Normally White, Transmissive display configuration. The panel provides a 211.2 × 158.4 mm active display area and supports 262K colors.

The NL6448BC33-54 provides a typical luminance of 220 cd/m² and a typical contrast ratio of 350:1. Its 76 PPI pixel density and 4:3 VGA format make it suitable for industrial control interfaces, machine displays, process monitoring systems, industrial PCs and other legacy equipment requiring a compatible 10.4-inch display.

For connectivity, the panel uses a 31-pin CMOS interface with 1-channel, 6-bit RGB signaling and supports a typical LCD supply of 3.3V or 5.0V. The backlight uses two CCFL lamps in an edge-light configuration and requires a compatible external inverter. These characteristics are important when using the NL6448BC33-54 as a replacement for an existing industrial LCD.

The supplied product listing identifies this particular unit as new and specifies a 3-month warranty. The exact model and specifications should still be matched against the original LCD before installation.

Key Features

• NEC NL6448BC33-54 TFT-LCD panel
• 10.4-inch diagonal display
• 640 × 480 VGA resolution
• 4:3 aspect ratio
• Approximately 76 PPI pixel density
• a-Si TFT-LCD technology
• TN, Normally White, Transmissive display mode
• 211.2 × 158.4 mm active display area
• 220 cd/m² typical brightness
• 350:1 typical contrast ratio
• 262K colors
• Approximately 40% NTSC color gamut
• 31-pin CMOS connector
• 1-channel, 6-bit RGB interface
• 60 Hz frame rate
• 3.3V / 5.0V typical LCD supply
• Two CCFL backlight lamps
• Edge-light backlight configuration
• External CCFL inverter required
• Replaceable backlight lamps
• Antiglare surface characteristics
• 3H hard coating
• 10°C to +70°C operating temperature
• -20°C to +80°C storage temperature
• Without integrated touchscreen
• New condition
• 3-month warranty

Technical Specifications

The product-specific specifications, including 220 cd/m² luminance, 350:1 contrast ratio, 31-pin CMOS interface, 2-CCFL backlight, 10°C to +70°C operating temperature and new condition, are listed on the supplied product page.

The NEC technical documentation confirms the 10.4-inch, 640 × 480 display, 211.2 × 158.4 mm active area, 262K colors, 6-bit digital RGB interface, 3.3V/5.0V supply configuration and two-lamp CCFL edge-light system.

10.4 Inch 640 × 480 VGA Display

The NL6448BC33-54 features a 10.4-inch diagonal display with a 640 × 480 VGA resolution and a 4:3 aspect ratio. The active area measures 211.2 × 158.4 mm, resulting in approximately 76 pixels per inch.

The 640 × 480 format is particularly useful for older industrial equipment where the display controller was designed around standard VGA output. It provides adequate screen space for machine parameters, menus, alarms, process values, status indicators and basic graphical interfaces.

For replacement applications, matching the resolution and screen size is only one part of the compatibility check. The interface, pinout, power requirements, backlight, physical dimensions and mounting arrangement should also match the original display.

Display Technology

The NL6448BC33-54 uses amorphous silicon TFT-LCD technology with a TN, Normally White, Transmissive display configuration. The panel uses an RGB vertical-stripe pixel arrangement.

The panel supports 262K colors through its 6-bit digital RGB interface and has a typical color gamut of approximately 40% NTSC.

The Normally White configuration is an important consideration when selecting a replacement LCD. Another 10.4-inch VGA panel may have a different optical configuration or electrical interface even when its resolution is identical.

Brightness and Contrast

The NL6448BC33-54 has a typical luminance of 220 cd/m² and a typical contrast ratio of 350:1.

Its specified viewing angles are approximately 45° left, 45° right, 30° upward and 20° downward under the applicable contrast-ratio measurement condition.

The panel uses a clear surface with 3H hard coating. These optical characteristics should be considered when replacing an existing LCD, particularly when the original equipment was designed around the same viewing conditions.

Interface and Connector

The NL6448BC33-54 uses a CMOS parallel RGB interface with 1-channel, 6-bit RGB signaling and a 31-pin connector. The interface includes RGB data, clock, synchronization and data-enable signals.

The panel supports a typical LCD supply voltage of 3.3V or 5.0V. The correct voltage configuration should be confirmed before connecting the display to the target equipment.

Before installation, verify:

• Complete 31-pin connector pinout
• RGB signal assignment
• R0 to R5, G0 to G5 and B0 to B5 signals
• Pixel clock
• Hsync
• Vsync
• Data-enable signal
• LCD supply voltage
• Connector orientation
• Display timing
• Controller compatibility

A 31-pin connector alone does not guarantee compatibility. The function and electrical characteristics of the individual pins must match the original equipment.

Backlight

The NL6448BC33-54 uses an edge-light configuration with two CCFL lamps. The lamps are replaceable, and the original NEC documentation identifies compatible inverter options for the backlight.

The panel does not include an integrated backlight driver, so a suitable external CCFL inverter is required for operation.

This is particularly important for legacy replacement applications. A modern LED-backlit 10.4-inch LCD with the same VGA resolution should not automatically be treated as a direct replacement because its backlight power, driver and control requirements may be different.

CCFL inverter circuits operate at high voltage, so appropriate precautions should be taken during installation and servicing.

Mechanical Dimensions

The NL6448BC33-54 has an active display area of 211.2 × 158.4 mm and typical module dimensions of approximately 243.0 × 185.1 × 10.5 mm. The typical module weight is approximately 465 g.

These dimensions are important when installing the panel into an existing industrial enclosure, HMI assembly or display housing.

Before replacement, verify:

• Overall width
• Overall height
• Panel thickness
• Active area
• Bezel opening
• Mounting-hole locations
• Connector position
• CCFL cable routing
• External inverter location
• Rear clearance

Another 10.4-inch VGA LCD may have different mounting dimensions even when its screen size and resolution are the same.

Operating Temperature

The NL6448BC33-54 is specified for an operating temperature range of 10°C to +70°C and a storage temperature range of -20°C to +80°C according to the supplied product specifications.

The LCD module's temperature range should not be treated as the temperature rating of the complete display assembly. The controller, CCFL inverter, power supply, cables and enclosure may have different operating limits.

For equipment operating near these temperature limits, the complete display system should be evaluated.

Industrial Applications

The NL6448BC33-54 is a legacy industrial TFT-LCD designed around a 10.4-inch VGA format, CMOS RGB interface and CCFL backlight. NEC documentation identifies applications such as control-system display terminals and industrial PCs.

Potential applications include:

• Industrial PCs
• HMI systems
• Control-system display terminals
• Process-controller monitors
• CNC machine interfaces
• Industrial control panels
• Factory automation equipment
• Machine monitoring systems
• Process control equipment
• Industrial instrumentation
• Embedded computer systems
• Operator terminals
• Measurement equipment
• Legacy industrial machinery

The actual suitability depends on the electrical, mechanical, environmental, controller and backlight requirements of the target equipment.

Compatibility and Replacement Note

The NEC NL6448BC33-54 should be selected as a replacement only after comparing its complete specifications with the original LCD.

Before purchasing or installing the panel, verify:

• Exact original LCD model and suffix
• 10.4-inch screen size
• 640 × 480 resolution
• Active display area
• Overall dimensions
• Panel thickness
• Mounting arrangement
• Connector type and location
• 31-pin connector configuration
• Complete pinout
• CMOS RGB interface
• 1-channel, 6-bit configuration
• Pixel clock
• Hsync and Vsync
• Data-enable signal
• LCD supply voltage
• Two-CCFL backlight configuration
• CCFL lamp requirements
• External inverter compatibility
• Backlight wiring
• Controller compatibility
• Operating temperature requirements

The NL6448BC33 series includes multiple variants, and similar model numbers should not automatically be considered interchangeable. Variants can differ in brightness, contrast, viewing angle, display mode, electrical configuration and other characteristics.

A similar 10.4-inch size, 640 × 480 resolution or 31-pin connector does not automatically mean another LCD is a direct replacement.

Connector type alone does not guarantee compatibility. The exact model and suffix, dimensions, mounting, pinout, interface, voltage, timing, backlight, driver and controller compatibility should all be verified before installation.

Product Details

Product: NEC NL6448BC33-54 LCD Panel
Brand: NEC
Model: NL6448BC33-54
Display Size: 10.4 inches
Resolution: 640 × 480 pixels, VGA
Panel Type: a-Si TFT-LCD
Display Type: Color TFT-LCD Module
Display Mode: TN, Normally White, Transmissive
Interface: CMOS, 1 channel, 6-bit RGB
Connector: 31-pin
Brightness: 220 cd/m² typical
Contrast Ratio: 350:1 typical
Supply Voltage: 3.3V / 5.0V typical
Backlight: 2 × CCFL, edge light
Backlight Life: Not specified
Backlight Driver: External inverter
Operating Temperature: 10°C to +70°C
Storage Temperature: -20°C to +80°C
Touch Screen: Without touchscreen
Condition: New
Warranty: 3 months

Handling and Installation Precautions

The NL6448BC33-54 contains delicate LCD glass, polarizer material, driver electronics and CCFL backlight components. Handle the module carefully during installation.

• Avoid applying pressure directly to the LCD glass.
• Do not scratch or damage the front polarizer.
• Keep sharp tools and hard objects away from the display surface.
• Power off the equipment before connecting or disconnecting the LCD.
• Handle the 31-pin connector carefully.
• Do not force or tilt the connector during insertion or removal.
• Verify the complete CMOS RGB pinout before applying power.
• Confirm the required LCD supply voltage.
• Verify RGB signal mapping and display timing.
• Confirm pixel clock, Hsync, Vsync and DE requirements.
• Verify the two-CCFL backlight configuration.
• Use a compatible external CCFL inverter.
• Do not connect or disconnect CCFL wiring while power is applied.
• Be aware that CCFL inverter circuits generate high voltage.
• Follow appropriate ESD precautions when handling the module.
• Keep the display away from moisture and condensation.
• Wipe off water or liquid immediately to help prevent discoloration or spots.
• Avoid dropping, bending, twisting or striking the panel.
• Do not attempt to open or modify the module assembly.
• Protect the signal and CCFL cables from excessive bending.
• Provide sufficient clearance around the connector and inverter.
• Ensure mounting hardware does not place stress on the LCD glass.
• Confirm that the equipment operates within the specified environmental range.

Frequently Asked Questions

What is the NEC NL6448BC33-54?

The NEC NL6448BC33-54 is a 10.4-inch color TFT-LCD panel with a 640 × 480 VGA resolution, 6-bit CMOS RGB interface and two-lamp CCFL backlight. It was designed for industrial and control-system display applications.

What is the resolution of the NL6448BC33-54?

The NL6448BC33-54 has a 640 × 480 pixel VGA resolution.

What is the screen size of the NL6448BC33-54?

The panel has a 10.4-inch diagonal display with a 211.2 × 158.4 mm active display area.

What type of display is the NL6448BC33-54?

It is an a-Si TFT-LCD using a TN, Normally White, Transmissive display configuration.

How many colors does the NL6448BC33-54 support?

The panel supports 262K colors through its 6-bit RGB interface.

What is the brightness of the NL6448BC33-54?

The typical brightness is 220 cd/m².

What is the contrast ratio of the NL6448BC33-54?

The typical contrast ratio is 350:1.

What interface does the NL6448BC33-54 use?

The panel uses a CMOS parallel RGB interface with 1-channel, 6-bit RGB data.

How many pins does the NL6448BC33-54 connector have?

The NL6448BC33-54 uses a 31-pin connector. The complete pinout should be verified before installation because connector count alone does not establish compatibility.

What type of backlight does the NL6448BC33-54 use?

The panel uses two CCFL lamps in an edge-light configuration. A compatible external inverter is required because the panel is specified without an integrated backlight driver.

Does the NL6448BC33-54 have a touchscreen?

The standard NL6448BC33-54 is specified as an LCD module without an integrated touchscreen.

What are the dimensions of the NL6448BC33-54?

The module is approximately 243.0 × 185.1 × 10.5 mm, with a 211.2 × 158.4 mm active display area.

What is the operating temperature of the NL6448BC33-54?

The supplied product specification lists an operating temperature range of 10°C to +70°C, with a storage temperature range of -20°C to +80°C.

Is the NL6448BC33-54 new?

The supplied product listing identifies the available NL6448BC33-54 unit as new.

What warranty is provided for the NL6448BC33-54?

The supplied product listing specifies a 3-month warranty.

Can the NL6448BC33-54 be used as a replacement LCD?

It can be considered for compatible equipment designed around the NL6448BC33-54 specification. Before installation, verify the exact model and suffix, dimensions, mounting, 31-pin pinout, CMOS RGB interface, supply voltage, display timing, CCFL configuration and external inverter requirements. A similar screen size, resolution or connector does not automatically guarantee direct compatibility.