NEC NL6448BC26-09 8.4 Inch TFT LCD Panel

The NEC NL6448BC26-09 is an 8.4-inch industrial color TFT-LCD panel designed for equipment requiring a 640 × 480 VGA resolution. It uses amorphous silicon TFT active-matrix technology and a traditional 4:3 display format. The panel provides a 170.88 × 128.16 mm active display area and supports 262,144 colors through a 6-bit digital RGB interface.

The NL6448BC26-09 offers a typical brightness of 450 cd/m² and a 600:1 typical contrast ratio, along with wide viewing angles of approximately 80° left, 80° right, 80° upward and 60° downward. These characteristics make it suitable for industrial equipment where clear viewing from different positions is important.

For connectivity, the panel uses a CMOS parallel RGB interface with 6-bit RGB data and a 31-pin connector. It supports either 3.3V or 5.0V operation for the LCD signal-processing board, depending on the applicable configuration. The backlight uses two CCFL lamps in an edge-light configuration, and the lamps are replaceable. The panel itself does not include the recommended external inverter.

The NL6448BC26-09 was designed for industrial applications and can be relevant to industrial PCs, HMI systems, control equipment, instrumentation, machine interfaces and other compatible legacy systems. Exact electrical and mechanical compatibility should always be verified before using it as a replacement.

Key Features

• NEC NL6448BC26-09 industrial TFT-LCD panel
• 8.4-inch diagonal display
• 640 × 480 VGA resolution
• 4:3 aspect ratio
• a-Si TFT active-matrix technology
• TN, Normally White, Transmissive display mode
• 170.88 × 128.16 mm active display area
• 450 cd/m² typical brightness
• 600:1 typical contrast ratio
• 262,144 colors
• RGB vertical stripe pixel arrangement
• Wide viewing angles
• 6-bit digital RGB interface
• 31-pin connector
• 60 Hz vertical frequency
• 3.3V / 5.0V LCD supply configuration
• Two CCFL backlight lamps
• Edge-light backlight configuration
• Replaceable backlight lamps
• External inverter recommended
• Reversible scan direction
• Landscape orientation
• Wide operating temperature range
• Designed for industrial applications
• No integrated touchscreen

Technical Specifications

The NEC documentation identifies the NL6448BC26-09 as an 8.4-inch industrial TFT-LCD with 640 × 480 resolution, 262K colors, 450 cd/m² typical luminance, 600:1 contrast, 31-pin CMOS RGB interface and two CCFL lamps.

8.4 Inch 640 × 480 VGA Display

The NL6448BC26-09 features an 8.4-inch diagonal display with a 640 × 480 VGA resolution. Its 4:3 aspect ratio is characteristic of many older industrial computers, control terminals and embedded display systems.

The active display area measures 170.88 × 128.16 mm, while the pixel pitch is 0.267 × 0.267 mm. With approximately 95 pixels per inch, the panel is suitable for displaying machine parameters, menus, numerical information, alarms, status screens and basic graphics.

The 640 × 480 resolution is particularly relevant when replacing a legacy LCD in equipment designed around VGA output. However, resolution and screen size should not be used as the only compatibility criteria.

Display Technology

The NL6448BC26-09 uses amorphous silicon TFT active-matrix technology. It has a TN, Normally White, Transmissive display configuration and an RGB vertical stripe pixel arrangement.

The panel supports 262,144 colors using 6-bit digital RGB signals. Its active-matrix construction allows individual pixels to be controlled through the TFT array, making it suitable for graphical industrial interfaces.

The Normally White configuration is important when selecting a replacement. Another 8.4-inch VGA LCD may use a different display mode, interface or electrical configuration despite having the same resolution.

Brightness and Contrast

The NL6448BC26-09 has a typical luminance of 450 cd/m² and a typical contrast ratio of 600:1.

The specified viewing angles are approximately 80° left, 80° right, 80° upward and 60° downward at the specified contrast-ratio condition. The panel's designed viewing direction is 6 o'clock.

The clear polarizer surface has a specified minimum 3H pencil hardness. These characteristics should be considered when evaluating the panel for equipment with specific viewing or environmental requirements.

Interface and Connector

The NL6448BC26-09 uses a CMOS parallel RGB interface with a 1-channel, 6-bit configuration. The panel has a 31-pin connector and supports RGB data along with clock, horizontal synchronization, vertical synchronization and data-enable signals.

The LCD signal-processing board supports either a 3.3V or 5.0V supply, with the applicable voltage configuration needing to be verified before connection.

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 electrical function of the pins must match the original equipment.

Backlight

The NL6448BC26-09 uses two CCFL lamps in an edge-light configuration. The lamps are replaceable, and the original documentation identifies the lamp holder set as 84LHS06.

The typical lamp voltage is 435V, with a typical lamp current of 5.0 mA per lamp. The panel documentation identifies recommended external inverter options including 84PW031 and 84PW041.

The typical backlight life is approximately 50,000 hours according to technical references.

Because this is a CCFL-backlit panel, it should not automatically be replaced with an LED-backlit 8.4-inch display simply because the replacement has the same resolution and physical size. The backlight driver and electrical configuration can be substantially different.

Mechanical Dimensions

The NL6448BC26-09 has an active display area of 170.88 × 128.16 mm. The typical module dimensions are approximately 200.0 × 152.0 × 10.5 mm, with a typical weight of 330 g and maximum specified weight of 350 g.

The panel also has four face-mounting holes of approximately 2.8 mm diameter according to available technical references.

Before installing the LCD into existing equipment, verify:

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

Another 8.4-inch 640 × 480 display can have different mounting dimensions even if its resolution is identical.

Operating Temperature

The NL6448BC26-09 is specified for an operating temperature range of -20°C to +70°C and a storage temperature range of -30°C to +80°C.

The humidity requirements also vary with temperature, and the documentation specifies conditions intended to avoid condensation. For industrial equipment operating in demanding environments, the complete display assembly should be evaluated rather than relying only on the LCD's temperature rating.

Industrial Applications

The NL6448BC26-09 was developed for industrial use and combines a VGA resolution, wide viewing angle, wide temperature range and replaceable CCFL backlight.

Potential applications include:

• Industrial PCs
• HMI systems
• Industrial control panels
• Machine interfaces
• CNC equipment
• Factory automation systems
• Process control equipment
• Industrial instrumentation
• Machine monitoring systems
• Measurement equipment
• Embedded computer systems
• Operator terminals
• Control and monitoring 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 NL6448BC26-09 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
• 8.4-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
• 6-bit RGB configuration
• Pixel clock
• Hsync and Vsync
• Data-enable signal
• DPS configuration
• LCD supply voltage
• Two-CCFL backlight configuration
• Lamp voltage and current
• Inverter compatibility
• Backlight wiring
• Controller compatibility
• Operating temperature requirements

The NL6448BC26-09 should not be confused with other NEC 8.4-inch LCD models that may have similar VGA resolutions. Even panels from the same manufacturer can use different connector arrangements, pinouts, backlight systems and electrical specifications.

A similar 8.4-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 and controller compatibility should all be verified before installation.

Product Details

Product: NEC NL6448BC26-09 LCD Panel
Brand: NEC
Model: NL6448BC26-09
Display Size: 8.4 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 RGB, 1 channel, 6-bit
Connector: 31-pin
Brightness: 450 cd/m² typical
Contrast Ratio: 600:1 typical
Supply Voltage: 3.3V / 5.0V
Backlight: 2 × CCFL, edge light
Backlight Life: Approximately 50,000 hours typical
Backlight Driver: External inverter
Lamp Voltage: 435V typical
Lamp Current: 5.0 mA typical per lamp
Operating Temperature: -20°C to +70°C
Storage Temperature: -30°C to +80°C
Touch Screen: Without touchscreen
Condition: Not specified
Warranty: Not specified

Handling and Installation Precautions

The NL6448BC26-09 contains delicate LCD glass, polarizer material, driver electronics and CCFL backlight components. Careful handling is required 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 the connector into position.
• Verify the complete CMOS RGB pinout before applying power.
• Confirm whether the equipment requires the 3.3V or 5.0V configuration.
• Verify RGB signal mapping and display timing.
• Confirm pixel clock, Hsync, Vsync and DE connections.
• Verify the DPS configuration.
• Confirm the two-CCFL backlight configuration.
• Use a compatible external CCFL inverter.
• Verify lamp voltage and current requirements.
• 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 LCD 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 RGB 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 NL6448BC26-09?

The NEC NL6448BC26-09 is an 8.4-inch color TFT-LCD module designed for industrial applications. It has a 640 × 480 VGA resolution, 6-bit CMOS RGB interface and two-CCFL backlight.

What is the resolution of the NL6448BC26-09?

The NL6448BC26-09 has a 640 × 480 pixel VGA resolution.

What is the screen size of the NL6448BC26-09?

The panel has an 8.4-inch diagonal display with a 170.88 × 128.16 mm active display area.

What type of display is the NL6448BC26-09?

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

How many colors does the NL6448BC26-09 support?

The panel supports 262,144 colors through its 6-bit RGB interface.

What is the brightness of the NL6448BC26-09?

The typical brightness is 450 cd/m².

What is the contrast ratio of the NL6448BC26-09?

The typical contrast ratio is 600:1.

What interface does the NL6448BC26-09 use?

The panel uses a CMOS parallel RGB interface with 1-channel, 6-bit RGB data. It also uses clock, synchronization and data-enable signals.

How many pins does the NL6448BC26-09 connector have?

The NL6448BC26-09 uses a 31-pin connector for its RGB interface. The complete pinout should be verified before installation.

What type of backlight does the NL6448BC26-09 use?

The panel uses two CCFL lamps in an edge-light configuration. The lamps are replaceable, and an external compatible inverter is required.

What is the backlight life of the NL6448BC26-09?

Technical references specify a typical backlight life of approximately 50,000 hours.

Does the NL6448BC26-09 have a touchscreen?

The standard NL6448BC26-09 is specified as a display module without an integrated touchscreen.

What are the dimensions of the NL6448BC26-09?

The module is approximately 200.0 × 152.0 × 10.5 mm, with a 170.88 × 128.16 mm active display area.

What is the operating temperature of the NL6448BC26-09?

The specified operating temperature range is -20°C to +70°C, while the storage temperature range is -30°C to +80°C.

Can the NL6448BC26-09 be used as a replacement LCD?

It can be considered for compatible equipment designed around the NL6448BC26-09 specification. Before installation, verify the exact model, dimensions, mounting, 31-pin pinout, CMOS RGB interface, supply voltage, display timing, CCFL configuration and inverter requirements. A matching screen size, resolution or connector does not by itself guarantee direct compatibility.