NEC NL6448BC33-31 10.4 Inch TFT LCD Panel

The NEC NL6448BC33-31 is a 10.4-inch industrial TFT-LCD panel designed for equipment requiring a 640 × 480 VGA resolution. Manufactured by NEC, the panel uses a-Si TFT-LCD technology with a traditional 4:3 aspect ratio and a TN, Normally White, Transmissive display configuration. It provides a 211.2 × 158.4 mm active display area and supports 262K colors.

The NL6448BC33-31 offers a typical brightness of 350 cd/m² and a typical contrast ratio of 300:1. Its 640 × 480 resolution and 76 PPI pixel density make it suitable for displaying machine parameters, control screens, menus, alarms, measurements and other industrial interface information.

The panel uses a 31-pin CMOS interface with 1-channel, 6-bit RGB signaling and supports a 3.3V or 5.0V typical supply configuration. It uses two CCFL backlight lamps, with an external driver required. These specifications are particularly important when considering the panel for legacy equipment replacement.

The supplied product listing identifies the available unit as refurbished. The product page uses the designation NL6448BC33-31D, while the technical references identify the base panel as NL6448BC33-31. The specifications below focus on the NL6448BC33-31 panel and the characteristics listed for the supplied product.

Key Features

• NEC NL6448BC33-31 TFT-LCD panel
• 10.4-inch diagonal display
• 640 × 480 VGA resolution
• 4:3 aspect ratio
• Approximately 76 PPI
• a-Si TFT-LCD technology
• TN, Normally White, Transmissive display mode
• 211.2 × 158.4 mm active display area
• 350 cd/m² typical brightness
• 300:1 typical contrast ratio
• 262K colors
• 43% NTSC color gamut
• Antiglare and antireflection surface treatment
• 31-pin CMOS connector
• 1-channel, 6-bit RGB interface
• 60 Hz frame rate
• 3.3V / 5.0V typical supply
• Two CCFL backlight lamps
• External CCFL driver required
• Landscape orientation
• 180° reverse display capability
• Suitable for compatible industrial and legacy equipment
• Refurbished condition

Technical Specifications

The supplied product page specifies the 10.4-inch size, 640 × 480 resolution, 211.2 × 158.4 mm active area, 243 × 185.1 × 11.5 mm outline, 350 cd/m² brightness, 300:1 contrast ratio, 31-pin CMOS interface and refurbished condition.

The original NEC documentation for NL6448BC33-31 confirms the 10.4-inch, 640 × 480, 262K-color TFT-LCD architecture, 6-bit digital RGB interface and two-lamp edge-light CCFL configuration.

10.4 Inch 640 × 480 VGA Display

The NL6448BC33-31 features a 10.4-inch diagonal display with a 640 × 480 VGA resolution and a 4:3 aspect ratio.

Its active display area measures 211.2 × 158.4 mm, providing approximately 76 pixels per inch. This format is particularly relevant to older industrial computers, machine interfaces and control systems that were designed around standard VGA output.

The 640 × 480 resolution provides sufficient space for displaying control menus, machine status, numerical values, alarms, measurements, process information and basic graphics.

For replacement applications, however, matching the screen size and resolution is not enough. The original controller interface, connector pinout, supply voltage, backlight and physical mounting arrangement should also be checked.

Display Technology

The NL6448BC33-31 uses amorphous silicon TFT-LCD technology with a TN, Normally White, Transmissive display mode. It uses an RGB vertical-stripe pixel arrangement.

The panel supports 262K colors through its 6-bit RGB interface and provides approximately 43% NTSC color gamut according to the supplied product specifications.

The Normally White configuration is an important consideration when selecting a replacement LCD. A different 10.4-inch VGA panel may use a different display mode, signal configuration or electrical interface even when its resolution is identical.

Brightness and Contrast

The NL6448BC33-31 is specified with a typical brightness of 350 cd/m² and a typical contrast ratio of 300:1.

The specified typical viewing angles are approximately 50° left, 50° right, 40° upward and 45° downward under the applicable contrast-ratio condition.

The panel also uses antiglare and antireflection surface treatments, which can be useful in equipment exposed to ambient lighting.

Interface and Connector

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

The supplied product information specifies a typical LCD supply of 3.3V or 5.0V. The correct supply configuration must be verified against the actual equipment and panel documentation before applying power.

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
• Supply voltage
• Connector orientation
• Display timing
• Controller compatibility

A 31-pin connector alone does not guarantee compatibility. Every relevant signal and power connection should be matched.

Backlight

The NL6448BC33-31 uses a two-lamp CCFL edge-light backlight. The original NEC documentation identifies the backlight as an incorporated two-lamp system with replaceable long-life lamps.

The supplied product listing specifies that an external driver is required for the CCFL backlight.

This is an important consideration for replacement applications. A modern LED-backlit 10.4-inch LCD with the same 640 × 480 resolution should not automatically be considered a direct replacement because the backlight driver and electrical requirements can be completely different.

CCFL inverter systems operate at high voltage, so appropriate precautions are required during installation and servicing.

Mechanical Dimensions

The NL6448BC33-31 has an active display area of 211.2 × 158.4 mm and an overall outline of approximately 243 × 185.1 × 11.5 mm according to the supplied product information.

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

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

A different 10.4-inch VGA LCD may have different mounting dimensions even when the display resolution is the same.

Operating Temperature

The NL6448BC33-31 is specified for an operating temperature range of 0°C to +50°C and a storage temperature range of -20°C to +60°C in the available technical references.

These limits apply to the LCD module. The controller, CCFL driver, power supply, cables and surrounding equipment may have separate operating limitations.

For equipment operating close to these temperature limits, the complete display assembly should be evaluated.

Industrial Applications

The NL6448BC33-31 was designed for industrial applications and combines a 10.4-inch VGA format with a digital RGB interface and CCFL backlight. The original NEC documentation specifically identifies applications including control-system display terminals and process-controller monitors.

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 NL6448BC33-31 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 driver compatibility
• Backlight wiring
• Controller compatibility
• Operating temperature requirements

The product listing uses the designation NL6448BC33-31D, while the NEC technical documentation identifies NL6448BC33-31. If your original equipment specifically identifies the panel as NL6448BC33-31D, match the complete marking and revision before ordering.

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 NL6448BC33-31 LCD Panel
Brand: NEC
Model: NL6448BC33-31
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: 350 cd/m² typical
Contrast Ratio: 300:1 typical
Supply Voltage: 3.3V / 5.0V typical
Backlight: 2 × CCFL, edge light
Backlight Life: Not specified
Backlight Driver: External driver required
Operating Temperature: 0°C to +50°C
Storage Temperature: -20°C to +60°C
Touch Screen: Without touchscreen
Condition: Refurbished
Warranty: Not specified

Handling and Installation Precautions

The NL6448BC33-31 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 supply voltage before connection.
• 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 driver.
• Do not connect or disconnect CCFL wiring while power is applied.
• Be aware that CCFL driver circuits generate high voltage.
• Follow appropriate ESD precautions when handling the module.
• Keep the display away from moisture.
• Wipe off water or liquid immediately to 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 driver.
• Ensure mounting hardware does not place stress on the LCD glass.
• Confirm that the equipment operates within the specified temperature range.

Frequently Asked Questions

What is the NEC NL6448BC33-31?

The NEC NL6448BC33-31 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 display applications.

What is the resolution of the NL6448BC33-31?

The NL6448BC33-31 has a 640 × 480 pixel VGA resolution.

What is the screen size of the NL6448BC33-31?

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 NL6448BC33-31?

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

How many colors does the NL6448BC33-31 support?

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

What is the brightness of the NL6448BC33-31?

The typical brightness is 350 cd/m².

What is the contrast ratio of the NL6448BC33-31?

The typical contrast ratio is 300:1 according to the supplied product specification.

What interface does the NL6448BC33-31 use?

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

How many pins does the NL6448BC33-31 connector have?

The panel 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 NL6448BC33-31 use?

The panel uses two CCFL lamps in an edge-light configuration. An external driver is required for the backlight according to the supplied product information.

Does the NL6448BC33-31 have a touchscreen?

The standard LCD module is specified without an integrated touchscreen. A separate touch panel may be installed where required.

What are the dimensions of the NL6448BC33-31?

The module outline is approximately 243 × 185.1 × 11.5 mm, with an active display area of 211.2 × 158.4 mm.

What is the operating temperature of the NL6448BC33-31?

The specified operating temperature range is 0°C to +50°C, while the storage temperature range is -20°C to +60°C.

Is the NL6448BC33-31 refurbished?

The supplied product listing identifies the available unit as refurbished.

Can the NL6448BC33-31 be used as a replacement LCD?

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

The original NEC technical information identifies the NL6448BC33-53 as a 10.4-inch, 640 × 480 industrial TFT-LCD with 380 cd/m² typical luminance, 500:1 contrast ratio, 262K colors, 85° viewing angles, CMOS RGB 6-bit input and a two-CCFL edge-light backlight.

10.4 Inch 640 × 480 VGA Display

The NL6448BC33-53 features a 10.4-inch diagonal display with a 640 × 480 VGA resolution and a 4:3 aspect ratio. Its active display area is 211.2 × 158.4 mm, giving the panel approximately 76 pixels per inch.

The VGA format is particularly relevant for older industrial equipment where the display controller or host system was designed specifically around 640 × 480 output. It provides sufficient resolution for machine parameters, menus, alarms, measurements, status indicators and basic graphical interfaces.

For replacement applications, however, screen size and resolution should not be treated as the only compatibility requirements. The NL6448BC33-53 uses a specific 6-bit CMOS RGB interface and CCFL backlight arrangement that must also match the target equipment.

Display Technology

The NL6448BC33-53 uses amorphous silicon TFT active-matrix technology with SA-SFT, Normally Black, Transmissive display operation. The panel uses an RGB vertical-stripe pixel arrangement.

SA-SFT is designed to provide a wide viewing angle. The NL6448BC33-53 offers approximately 85° viewing angles in all four directions under the specified contrast-ratio measurement condition.

The panel supports 262K colors through its 6-bit digital RGB interface. Its Normally Black configuration is an important consideration when selecting a replacement, since another 10.4-inch VGA LCD may use a different optical configuration.

Brightness and Contrast

The NL6448BC33-53 has a typical brightness of 380 cd/m² and a typical contrast ratio of 500:1.

Its wide viewing angle specification is approximately 85° left, 85° right, 85° upward and 85° downward under the specified contrast-ratio condition. This makes the panel suitable for equipment where operators may view the display from different positions.

The panel uses a clear surface with a specified 3H hard coating. These optical and surface characteristics should be considered when selecting a replacement for an existing industrial display.

Interface and Connector

The NL6448BC33-53 uses a CMOS parallel RGB interface with 1-channel, 6-bit RGB data and a 31-pin connector. The interface includes RGB data, clock, horizontal synchronization, vertical synchronization and data-enable signals.

The specified LCD supply supports 3.3V or 5.0V operation, depending on the applicable configuration. The exact voltage arrangement should be verified against the panel documentation and target equipment before applying power.

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
• DPS configuration
• 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 connections must match.

Backlight

The NL6448BC33-53 uses a two-lamp CCFL edge-light backlight. The original NEC documentation describes the lamp as replaceable and identifies the backlight as an edge-light type.

The panel is designed to work with a backlight inverter, with technical references identifying the inverter as an external component rather than an integrated part of the LCD module.

This is important when replacing the panel in older equipment. A modern LED-backlit 10.4-inch VGA panel should not automatically be considered a direct replacement because its backlight power, driver and control requirements can be completely different.

CCFL inverter circuits operate at high voltage, so appropriate safety precautions are necessary during installation and servicing.

Mechanical Dimensions

The NL6448BC33-53 has an active display area of 211.2 × 158.4 mm and an overall module size of approximately 243.0 × 185.1 × 10.5 mm. The typical panel weight is approximately 475 g, with a maximum listed weight of 500 g.

These mechanical dimensions are important when replacing an existing panel inside an industrial enclosure.

Before installation, verify:

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

Another 10.4-inch VGA LCD may have different mounting dimensions even if its active area and resolution are similar.

Operating Temperature

The NL6448BC33-53 is specified for an operating temperature range of -10°C to +70°C and a storage temperature range of -20°C to +80°C.

These ratings apply to the LCD module. The controller, CCFL inverter, power supply, cables and surrounding equipment may have separate environmental limits.

For industrial equipment operating near the specified temperature limits, the complete display assembly should be evaluated.

Industrial Applications

The NL6448BC33-53 was designed for industrial display applications. NEC documentation specifically lists display terminals for control systems and industrial PCs among its applications.

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 NL6448BC33-53 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
• DPS configuration
• LCD supply voltage
• Two-CCFL backlight configuration
• CCFL lamp requirements
• External inverter compatibility
• Backlight wiring
• Controller compatibility
• Operating temperature requirements

The NL6448BC33 series contains several different variants, including models such as NL6448BC33-31, NL6448BC33-54, NL6448BC33-59 and NL6448BC33-64. Although they share the 10.4-inch, 640 × 480 format, their brightness, contrast, viewing angles, interface and other characteristics can differ.

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 NL6448BC33-53 LCD Panel
Brand: NEC
Model: NL6448BC33-53
Display Size: 10.4 inches
Resolution: 640 × 480 pixels, VGA
Panel Type: a-Si TFT-LCD
Display Type: Color TFT-LCD Module
Display Mode: SA-SFT, Normally Black, Transmissive
Interface: CMOS, 1 channel, 6-bit RGB
Connector: 31-pin
Brightness: 380 cd/m² typical
Contrast Ratio: 500:1 typical
Supply Voltage: 3.3V / 5.0V
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: Not specified
Warranty: Not specified

Handling and Installation Precautions

The NL6448BC33-53 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.
• Avoid dropping, bending, twisting or striking the panel.
• Do not apply excessive pressure to the rear circuit board.
• 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 NL6448BC33-53?

The NEC NL6448BC33-53 is a 10.4-inch industrial color TFT-LCD panel with a 640 × 480 VGA resolution, 6-bit CMOS RGB interface and two-lamp CCFL backlight.

What is the resolution of the NL6448BC33-53?

The NL6448BC33-53 has a 640 × 480 pixel VGA resolution.

What is the screen size of the NL6448BC33-53?

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 NL6448BC33-53?

It is an a-Si TFT active-matrix LCD using SA-SFT, Normally Black, Transmissive display technology.

How many colors does the NL6448BC33-53 support?

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

What is the brightness of the NL6448BC33-53?

The typical brightness is 380 cd/m².

What is the contrast ratio of the NL6448BC33-53?

The typical contrast ratio is 500:1.

What interface does the NL6448BC33-53 use?

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

How many pins does the NL6448BC33-53 connector have?

The NL6448BC33-53 uses a 31-pin connector. The complete pinout should be verified before installation.

What type of backlight does the NL6448BC33-53 use?

The panel uses two CCFL lamps in an edge-light configuration and requires a compatible backlight inverter.

Does the NL6448BC33-53 have a touchscreen?

The standard NL6448BC33-53 is specified as an LCD module without an integrated touchscreen.

What are the dimensions of the NL6448BC33-53?

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 NL6448BC33-53?

The specified operating temperature range is -10°C to +70°C, while the storage temperature range is -20°C to +80°C.

Can the NL6448BC33-53 be used as a replacement LCD?

It can be considered for compatible equipment designed around the NL6448BC33-53 specification. Before installation, verify the exact model and suffix, dimensions, mounting, 31-pin pinout, CMOS RGB interface, supply voltage, display timing, CCFL configuration and inverter requirements. A similar screen size, resolution or connector does not automatically guarantee direct compatibility.