Sharp LQ121S1LG61 12.1 Inch TFT LCD Panel

The Sharp LQ121S1LG61 is a 12.1-inch industrial TFT-LCD module designed for equipment requiring an 800 × 600 SVGA display. It uses a-Si TFT-LCD technology with a TN, Normally White, Transmissive display mode and supports 262,144 colors through a single-channel 6-bit LVDS interface. The panel provides a 246.0 × 184.5 mm active display area and follows the traditional 4:3 display format used in many industrial and embedded systems.

The display offers a typical luminance of 450 cd/m² and a typical contrast ratio of 600:1. It provides viewing angles of approximately 70° left, 70° right, 50° up, and 60° down under the specified CR ≥ 10 condition. The panel also features an antiglare surface and 3H hard coating, making these optical and surface characteristics relevant when replacing an original industrial display.

The LQ121S1LG61 uses a 20-pin LVDS connector and supports a typical 3.3V or 5.0V panel supply. It uses two CCFL backlight lamps with a specified 50,000-hour reference life, and the backlight-driving DC/AC inverter is not built into the module. The supplied product page identifies this particular unit as new.

Key Features

• Sharp LQ121S1LG61 industrial TFT-LCD module
• 12.1-inch diagonal display
• 800 × 600 SVGA resolution
• Approximately 82 PPI pixel density
• 4:3 display format
• a-Si TFT-LCD technology
• TN, Normally White, Transmissive display mode
• 246.0 × 184.5 mm active display area
• 450 cd/m² typical luminance
• 600:1 typical contrast ratio
• 262,144 supported colors
• Approximately 45% NTSC color coverage
• RGB vertical stripe pixel arrangement
• Antiglare surface treatment
• 3H hard coating
• Single-channel, 6-bit LVDS interface
• 20-pin connector
• 60 Hz frame rate
• 3.3V/5.0V typical panel supply
• Two CCFL backlight lamps
• 50,000-hour specified backlight life
• External CCFL inverter required
• -30°C to 80°C operating temperature
• -30°C to 80°C storage temperature
• New condition

Technical Specifications

The specifications are based primarily on the original Sharp technical documentation and cross-checked against technical references for the exact LQ121S1LG61 model.

Important specification note: The supplied product page currently mentions a 120 Hz refresh rate and lists storage temperature as 30°C to 80°C. The Sharp technical specification identifies a 60 Hz frame rate and an operating/storage temperature range of -30°C to +80°C. The manufacturer documentation has therefore been used for these specifications.

12.1 Inch 800 × 600 SVGA Display

The Sharp LQ121S1LG61 features a 12.1-inch diagonal display with an 800 × 600 SVGA resolution. Its 246.0 × 184.5 mm active area provides the traditional 4:3 format commonly found in industrial computers, HMI systems, measuring equipment, machine interfaces, and other legacy applications.

The approximately 82 PPI pixel density is suitable for displaying machine parameters, numerical readings, menus, alarms, status information, control interfaces, measurement data, and graphical operating screens.

For replacement applications, the 12.1-inch screen size and 800 × 600 resolution should only be considered part of the compatibility assessment. Active area, overall dimensions, mounting arrangement, LVDS configuration, connector pinout, voltage, backlight, and controller requirements must also be checked.

Display Technology

The LQ121S1LG61 uses amorphous silicon TFT-LCD technology with a TN, Normally White, Transmissive display configuration. The module incorporates the TFT-LCD panel, driver ICs, control circuitry, power supply circuitry, and backlight unit.

The panel uses a 6-bit digital RGB configuration over a single-channel LVDS interface, providing 64 gray levels per RGB channel and a total of 262,144 supported colors.

The TN technology provides the optical characteristics specified for this model. When replacing the display with another LCD technology, such as IPS, the viewing behavior, signal requirements, and other characteristics may differ even when the screen size and resolution are the same.

Brightness and Contrast

The Sharp LQ121S1LG61 provides a typical luminance of 450 cd/m² and a typical contrast ratio of 600:1. These specifications describe the display's light output and its ability to differentiate between darker and brighter areas of an image.

The specified viewing angles are approximately 70° left, 70° right, 50° upward, and 60° downward under the CR ≥ 10 measurement condition. The specified viewing direction is 6 o'clock.

The display surface uses antiglare treatment and 3H hard coating. These surface characteristics are relevant for industrial installations where ambient reflections and normal handling are considerations.

Interface and Connector

The LQ121S1LG61 uses a single-channel, 6-bit LVDS interface through a 20-pin connector. The manufacturer documentation identifies compatible connectors including JAE FI-SE20ME and FI-S20S.

The 20-pin connector carries the panel supply, ground, three LVDS differential data pairs, an LVDS clock pair, and R/L and U/D display orientation control signals. The manufacturer's pinout identifies pins 1 and 2 for VCC, multiple ground connections, RXIN0, RXIN1, RXIN2, RXCLK, R/L, and U/D.

The panel supports a typical supply of 3.3V or 5.0V. The exact voltage configuration must be confirmed against the target equipment before installation.

A 20-pin connector does not automatically make another LCD compatible. The complete LVDS pinout, signal mapping, channel configuration, voltage requirements, timing, connector orientation, and controller compatibility must be verified.

This is particularly important for legacy LCD replacement because panels with the same connector count can have different electrical configurations.

Backlight

The Sharp LQ121S1LG61 uses two CCFL backlight lamps. The specified reference backlight life is 50,000 hours, and the backlight-driving DC/AC inverter is not built into the LCD module.

The manufacturer's documentation specifies an edge-lighting arrangement using two CCFT lamps. For each lamp, the documented typical lamp current is 6.0 mArms and typical lamp power consumption is 3.5 W. The documented kick-off voltage can reach 1300 Vrms at the inverter output.

Because CCFL systems require appropriate high-voltage drive circuitry, the existing inverter should be checked carefully before installing the panel. An LED-backlit LCD should not be assumed to be a direct replacement simply because it has the same screen size and resolution.

Mechanical Dimensions

The LQ121S1LG61 has an active display area of 246.0 × 184.5 mm. The manufacturer's specified outline dimensions are 276.0 × 209.0 mm with a maximum depth of 11.0 mm. The maximum specified mass is 800 g, excluding backlight cables.

These dimensions are important when installing the LCD into an existing industrial enclosure. The original equipment should be checked for sufficient clearance around the panel, mounting points, connector, and CCFL wiring.

Two 12.1-inch SVGA LCDs can have the same resolution and similar active area while differing in overall dimensions, thickness, mounting arrangement, or connector location. Therefore, physical measurements should be compared before ordering.

Operating Temperature

The Sharp LQ121S1LG61 is specified for an operating temperature range of -30°C to +80°C and a storage temperature range of -30°C to +80°C. The manufacturer also specifies humidity conditions, including a maximum of 95% RH at temperatures up to 40°C, with no condensation.

These environmental specifications apply to the LCD module. The controller, power supply, CCFL inverter, cables, and equipment enclosure may have different operating limits.

For installations exposed to temperature extremes, the complete display assembly and surrounding electronics should be evaluated against their respective specifications.

Industrial Applications

The Sharp LQ121S1LG61 is suitable for industrial and embedded equipment requiring a 12.1-inch SVGA TFT-LCD with a single-channel LVDS interface and CCFL backlight.

Potential applications include:

• Industrial PCs
• HMI systems
• Industrial control panels
• CNC machine interfaces
• Factory automation equipment
• Machine monitoring systems
• Process control equipment
• Measuring instruments
• Industrial instrumentation
• Embedded computing systems
• Industrial monitoring equipment
• Operator interface terminals
• Legacy industrial machinery
• Control and automation equipment
• Equipment requiring replacement of an original 12.1-inch SVGA LCD

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

Compatibility and Replacement Note

The Sharp LQ121S1LG61 should be selected as a replacement only after comparing its complete specifications with the original display.

Before purchasing or installing the panel, verify:

• Exact original LCD model and suffix
• 12.1-inch screen size
• 800 × 600 resolution
• Active display area
• Overall dimensions
• Panel thickness
• Mounting holes and mounting arrangement
• Connector type and location
• 20-pin connector configuration
• Complete LVDS pinout
• Single-channel LVDS configuration
• 6-bit signal configuration
• Display timing requirements
• LCD supply voltage
• R/L and U/D orientation signals
• CCFL backlight configuration
• CCFL inverter requirements
• Backlight current and voltage requirements
• Controller compatibility
• Operating temperature requirements
• Mechanical clearance inside the equipment

A similar 12.1-inch size, 800 × 600 resolution, or 20-pin connector does not automatically mean that another LCD is a direct replacement.

Connector type alone is not sufficient to establish compatibility. The exact model and suffix, active area, dimensions, mounting, LVDS pinout, voltage, timing, backlight system, inverter, and controller compatibility should all be verified.

The Sharp documentation provides a specific 20-pin pinout for the LQ121S1LG61, including power, ground, LVDS data pairs, LVDS clock, and display orientation signals. These details should be compared with the original equipment before connection.

For legacy replacement applications, compare the model number printed on the original LCD with LQ121S1LG61 and verify the complete technical specifications before ordering.

Product Details

Product: Sharp LQ121S1LG61 LCD Module
Brand: Sharp
Model: LQ121S1LG61
Display Size: 12.1 inches
Resolution: 800 × 600 pixels, SVGA
Panel Type: a-Si TFT-LCD, LCM
Display Type: Color TFT-LCD Module
Display Mode: TN, Normally White, Transmissive
Interface: LVDS, 1 channel, 6-bit
Connector: 20-pin
Brightness: 450 cd/m² typical
Contrast Ratio: 600:1 typical
Supply Voltage: 3.3V / 5.0V typical
Backlight: 2 × CCFL
Backlight Life: 50,000 hours
Backlight Driver: External DC/AC inverter required
Operating Temperature: -30°C to +80°C
Storage Temperature: -30°C to +80°C
Touch Screen: Not specified
Condition: New
Warranty: Not specified

Handling and Installation Precautions

The LQ121S1LG61 contains delicate LCD glass, a front polarizer, driver electronics, and CCFL backlight circuitry. Handle the module carefully during removal, inspection, and 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 20-pin LVDS connector carefully.
• Do not rotate or tilt the connector during insertion or removal.
• Verify the complete LVDS pinout before applying power.
• Confirm whether the equipment requires 3.3V or 5.0V panel supply.
• Verify LVDS signal mapping and timing.
• Confirm the R/L and U/D orientation control requirements.
• Use a suitable external CCFL inverter.
• Do not connect or disconnect the backlight while power is applied.
• Be aware that CCFL backlight circuits involve high-voltage drive circuitry.
• Follow appropriate ESD precautions when handling the module.
• Keep water and moisture away from the display.
• Wipe off water drops immediately to help prevent discoloration or spots.
• Avoid dropping, bending, or striking the LCD panel.
• Do not place excessive mechanical stress on the rear circuit board or connectors.
• Do not open or modify the LCD module unnecessarily.
• Provide adequate clearance for the LVDS connector and CCFL cables.
• Confirm that the equipment operates within the specified temperature range.

Frequently Asked Questions

What is the Sharp LQ121S1LG61?

The Sharp LQ121S1LG61 is a 12.1-inch a-Si TFT-LCD module with an 800 × 600 SVGA resolution, TN Normally White display mode, single-channel 6-bit LVDS interface, and two-CCFL backlight system.

What is the resolution of the LQ121S1LG61?

The LQ121S1LG61 has an 800 × 600 pixel SVGA resolution.

What is the screen size of the LQ121S1LG61?

The Sharp LQ121S1LG61 has a 12.1-inch diagonal display with a 246.0 × 184.5 mm active area.

What type of display is the LQ121S1LG61?

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

What is the brightness of the LQ121S1LG61?

The typical luminance is 450 cd/m².

What is the contrast ratio of the LQ121S1LG61?

The typical contrast ratio is 600:1.

What interface does the LQ121S1LG61 use?

The panel uses a single-channel, 6-bit LVDS interface.

How many pins does the LQ121S1LG61 connector have?

The LQ121S1LG61 uses a 20-pin connector. The manufacturer identifies compatible connector types including JAE FI-SE20ME and FI-S20S.

What type of backlight does the LQ121S1LG61 use?

The panel uses two CCFL backlight lamps with a specified 50,000-hour reference life. The backlight-driving DC/AC inverter is not built into the module and requires suitable external circuitry.

Does the LQ121S1LG61 have a touchscreen?

No touchscreen is specified for the LQ121S1LG61. It is supplied as a TFT-LCD module rather than an integrated touchscreen assembly.

What are the dimensions of the LQ121S1LG61?

The active display area is 246.0 × 184.5 mm, while the manufacturer's specified overall dimensions are 276.0 × 209.0 × 11.0 mm maximum. The maximum specified mass is 800 g, excluding backlight cables.

What is the operating temperature of the LQ121S1LG61?

The specified operating temperature range is -30°C to +80°C, with the same -30°C to +80°C range specified for storage.

What is the refresh rate of the LQ121S1LG61?

The manufacturer's technical documentation specifies a 60 Hz frame rate. The supplied product page contains a 120 Hz reference, but the manufacturer specification has been used here for accuracy.

Can the LQ121S1LG61 be used as a replacement LCD?

It can be considered for compatible industrial and embedded equipment requiring a 12.1-inch 800 × 600 TFT-LCD with a single-channel LVDS interface. Before installation, verify the exact model and suffix, dimensions, mounting, 20-pin LVDS pinout, supply voltage, timing, orientation signals, CCFL backlight requirements, inverter, and controller compatibility. A similar screen size, resolution, or connector does not automatically guarantee direct compatibility.