Sharp LQ121S1LG41 12.1 Inch TFT LCD Panel

The Sharp LQ121S1LG41 is a 12.1-inch industrial TFT-LCD module designed for equipment requiring an 800 × 600 SVGA display. It uses amorphous silicon TFT-LCD technology with a TN, Normally White, Transmissive display mode and supports 262,144 colors through a 6-bit LVDS interface. The panel provides a 246.0 × 184.5 mm active display area and a traditional 4:3 format, making it suitable for a range of legacy industrial and embedded display systems.

The display offers a typical luminance of 370 cd/m² and a typical contrast ratio of 450:1 according to the supplied product listing and supporting technical references. It provides viewing angles of approximately 70° left, 70° right, 50° up, and 60° down under the specified contrast-ratio condition. The panel surface has antiglare treatment and 3H hard coating for reduced reflections and improved surface resistance.

The LQ121S1LG41 uses a single-channel, 6-bit LVDS interface through a 20-pin connector and supports a typical 3.3V/5.0V VCC supply. It uses CCFL backlighting with a specified 50,000-hour lamp life, while the backlight-driving DC/AC inverter is not built into the module. The supplied product page lists the panel as refurbished with a 3-month warranty, making it relevant for replacement applications where an original LQ121S1LG41 or a fully compatible display is required.

Key Features

• Sharp LQ121S1LG41 industrial TFT-LCD module
• 12.1-inch diagonal display
• 800 × 600 SVGA resolution
• Approximately 82 PPI pixel density
• a-Si TFT-LCD technology
• TN, Normally White, Transmissive display mode
• 4:3 display format
• 246.0 × 184.5 mm active display area
• 370 cd/m² typical luminance
• 450:1 typical contrast ratio
• 262K supported colors
• Approximately 50% NTSC color coverage
• Antiglare surface treatment
• 3H hard coating
• LVDS interface
• 1-channel, 6-bit configuration
• 20-pin connector
• 60 Hz frame rate
• 3.3V/5.0V typical VCC
• CCFL backlight
• 50,000-hour specified backlight life
• External backlight inverter required
• -30°C to 70°C operating temperature according to the supplied product listing
• Refurbished condition
• 3-month warranty

Technical Specifications

The physical dimensions, active area, color depth, connector configuration, electrical interface, and manufacturer electrical specifications are supported by the Sharp technical documentation. The supplied product page is used for the listed condition, warranty, optical values, and product-specific configuration.

Temperature specification note: The supplied product page lists -30°C to 70°C operating temperature and -10°C to 65°C storage temperature. Sharp's technical documentation specifies an absolute operating range of -10°C to +65°C and storage from -30°C to +70°C. For temperature-critical installations, the manufacturer's specification should be followed rather than treating the product-page values as interchangeable with the manufacturer's operating and storage ratings.

12.1 Inch 800 × 600 SVGA Display

The Sharp LQ121S1LG41 features a 12.1-inch display with an 800 × 600 SVGA resolution. Its 246.0 × 184.5 mm active area provides the traditional 4:3 format commonly used in industrial PCs, HMI systems, measuring instruments, and other legacy equipment.

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

The 800 × 600 format is particularly relevant when replacing an existing industrial display designed around SVGA output. However, screen size and resolution alone do not establish compatibility. The active area, outline dimensions, mounting arrangement, interface, connector, pinout, voltage, backlight system, and controller requirements should all be compared with the original panel.

Display Technology

The LQ121S1LG41 uses amorphous silicon TFT-LCD technology with a TN, Normally White, Transmissive display mode. The module incorporates the TFT-LCD panel, driver ICs, control circuitry, power supply circuitry, and backlight unit.

The display uses 6-bit RGB data per color channel, providing 64 gray levels for each of red, green, and blue. The resulting 18-bit color configuration supports 262,144 colors.

The TN technology and 6 o'clock viewing direction are important characteristics when replacing the original panel. A different LCD technology may have different optical behavior even if the replacement has the same screen size and resolution.

Brightness and Contrast

The LQ121S1LG41 has a typical luminance of 370 cd/m² and a typical contrast ratio of 450:1 according to the supplied product page and supporting technical references. The manufacturer's specification also documents a minimum contrast ratio of 150:1 under its defined measurement conditions.

The typical viewing angles listed for the module are 70° left, 70° right, 50° up, and 60° down under the CR ≥ 10 condition. The optimum viewing direction is specified as 6 o'clock.

The panel has an antiglare surface and 3H hard coating. These treatments can be useful in industrial environments where ambient reflections and routine handling are considerations.

Interface and Connector

The Sharp LQ121S1LG41 uses a single-channel LVDS interface with 6-bit RGB signaling and a 20-pin connector. The manufacturer's documentation identifies the display connector as a JAE FI-SE20M or FI-S20S compatible connection.

The 20-pin interface carries LVDS differential data, LVDS clock, power, ground, and display orientation control signals. The documented connector includes VCC, GND, RXIN0, RXIN1, RXIN2, RXCLK, R/L, and U/D connections.

The panel supports a typical VCC of 3.3V or 5.0V. The exact voltage configuration must be confirmed against the equipment's controller before installation.

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

This is particularly important for legacy LCD replacements because displays with the same connector count can use different pin assignments and electrical configurations.

Backlight

The LQ121S1LG41 uses CCFL backlighting. The supplied product page identifies two CCFL lamps with a specified 50,000-hour life and no integrated driver.

Sharp's technical documentation describes the backlight as a CCFT system and provides lamp operating requirements including a typical lamp current of 6.0 mArms, approximately 3.5 W lamp power, and a 50,000-hour reference life. The document also states that the DC/AC inverter is not built into the module.

The backlight requires an appropriate external inverter. Sharp specifically notes that inverter characteristics can significantly affect backlight performance and recommends suitable protection and lamp monitoring circuitry.

For replacement applications, verify the existing CCFL inverter against the panel's requirements. An LED-backlit LCD should not be assumed to be a direct replacement for this CCFL-based module simply because the screen size and resolution are similar.

Mechanical Dimensions

The LQ121S1LG41 has an active display area of 246.0 × 184.5 mm. The manufacturer's specification lists overall dimensions of 276.0 × 209.0 mm with a maximum depth of 11.0 mm and a maximum mass of 660 g.

These dimensions are important when installing the LCD into an existing industrial enclosure. The mounting holes, panel thickness, connector position, cable routing, and available clearance should all be compared with the original display.

Two 12.1-inch SVGA LCDs can have the same resolution and similar active area while differing in overall dimensions or mounting arrangements. Such differences can prevent a physically direct replacement.

Operating Temperature

The supplied product page lists an operating temperature range of -30°C to 70°C and a storage range of -10°C to 65°C.

Sharp's technical documentation specifies an absolute operating range of -10°C to +65°C and a storage temperature range of -30°C to +70°C. It also documents humidity limitations, including a maximum 95% RH at temperatures up to 40°C, with no condensation.

For equipment operating close to environmental limits, use the manufacturer's specified operating and storage ranges and consider the temperature limitations of the controller, CCFL inverter, power supply, enclosure, and other system components.

Industrial Applications

The Sharp LQ121S1LG41 is suitable for industrial and embedded systems that require a 12.1-inch SVGA TFT display with a single-channel LVDS interface. Its specifications make it relevant to legacy equipment where the original display uses the same or compatible electrical and mechanical configuration.

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
• Medical equipment with compatible display electronics
• Operator interface terminals
• Legacy industrial machinery
• Industrial monitoring equipment

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

Compatibility and Replacement Note

The Sharp LQ121S1LG41 is a legacy TFT-LCD module and 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 RGB signaling
• Display timing requirements
• LCD supply voltage
• R/L and U/D orientation control requirements
• 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 identifies the LQ121S1LG41 as a 20-pin single-LVDS module and provides the specific connector pin assignments, including power, differential LVDS data, clock, and orientation control signals.

For legacy replacement applications, compare the model number printed on the original LCD with LQ121S1LG41 and verify the complete technical specifications before ordering.

Product Details

Product: Sharp LQ121S1LG41 LCD Module
Brand: Sharp
Model: LQ121S1LG41
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: 370 cd/m² typical
Contrast Ratio: 450:1 typical
Supply Voltage: 3.3V/5.0V typical
Backlight: CCFL
Backlight Life: 50,000 hours
Backlight Driver: External DC/AC inverter required
Operating Temperature: -10°C to +65°C according to manufacturer specification
Storage Temperature: -30°C to +70°C according to manufacturer specification
Touch Screen: Not specified
Condition: Refurbished
Warranty: 3 months

Handling and Installation Precautions

The LQ121S1LG41 contains delicate LCD glass, a front polarizer, driver electronics, and high-voltage CCFL backlight circuitry. Careful handling is required during removal and installation.

• Avoid applying pressure directly to the LCD glass.
• Do not scratch 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 the required 3.3V or 5.0V supply configuration.
• Verify LVDS signal mapping and timing.
• Confirm R/L and U/D orientation control requirements where applicable.
• Use a suitable external CCFL inverter.
• Do not connect or disconnect the backlight while power is applied.
• Be aware that the CCFL backlight circuit contains high-voltage components.
• 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 mechanical stress on the rear circuit board or connectors.
• Do not open or modify the module assembly unnecessarily.
• Ensure the cabinet does not introduce excessive stress, warping, or twisting to the LCD.
• Provide sufficient clearance for the connector, signal cable, and CCFL wiring.
• Confirm that the operating environment is within the applicable temperature range.

Frequently Asked Questions

What is the Sharp LQ121S1LG41?

The Sharp LQ121S1LG41 is a 12.1-inch color TFT-LCD module with an 800 × 600 SVGA resolution, TN Normally White display mode, single-channel LVDS interface, and CCFL backlight.

What is the resolution of the LQ121S1LG41?

The LQ121S1LG41 has an 800 × 600 pixel SVGA resolution.

What is the screen size of the LQ121S1LG41?

The Sharp LQ121S1LG41 has a 12.1-inch diagonal display with a 246.0 × 184.5 mm active display area.

What type of display is the LQ121S1LG41?

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

What is the brightness of the LQ121S1LG41?

The typical luminance listed for the LQ121S1LG41 is 370 cd/m².

What is the contrast ratio of the LQ121S1LG41?

The typical contrast ratio listed for the panel is 450:1. The manufacturer's documentation also specifies a minimum contrast ratio of 150:1 under its defined measurement conditions.

What interface does the LQ121S1LG41 use?

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

How many pins does the LQ121S1LG41 connector have?

The LQ121S1LG41 uses a 20-pin LVDS connector. The manufacturer documentation identifies JAE FI-SE20M or FI-S20S as corresponding connector types.

What type of backlight does the LQ121S1LG41 use?

The panel uses a CCFL backlight system. The supplied product page lists two CCFL lamps with a specified 50,000-hour life and no integrated driver.

Does the LQ121S1LG41 have a touchscreen?

No integrated touchscreen is specified for the LQ121S1LG41. It is supplied as a TFT-LCD module rather than a touchscreen assembly.

What are the dimensions of the LQ121S1LG41?

The active display area is 246.0 × 184.5 mm, while 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 660 g.

What is the operating temperature of the LQ121S1LG41?

The manufacturer's specification gives an operating range of -10°C to +65°C and a storage range of -30°C to +70°C.

Can the LQ121S1LG41 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, voltage, timing, orientation signals, CCFL backlight requirements, inverter, and controller compatibility. A similar size, resolution, or connector does not automatically guarantee direct compatibility.