Sharp LQ121S1LG75 12.1 Inch TFT LCD Panel

The Sharp LQ121S1LG75 is a 12.1-inch industrial color TFT-LCD module designed for applications requiring an 800 × 600 SVGA display. It uses a-Si TFT-LCD technology with a TN, Normally White, Transmissive display mode and a traditional 4:3 format. The panel provides a 246 × 184.5 mm active display area and approximately 82 PPI pixel density.

The display offers a typical luminance of 330 cd/m² and a typical contrast ratio of 800:1. It supports 16.2 million colors and provides viewing angles of approximately 80° left, 80° right, 60° up, and 80° down under the CR ≥ 10 condition. The front surface features antiglare treatment and 3H hard coating.

The LQ121S1LG75 uses a single-channel, 8-bit LVDS interface with a 30-pin connector and a typical 3.3V LCD supply. It incorporates a white LED backlight with an integrated LED driver and a typical backlight life of 50,000 hours. The display is listed as refurbished with a 3-month warranty on the supplied product page.

The LQ121S1LG75 is suitable for compatible industrial and medical equipment, control systems, embedded computers, monitoring equipment, and other applications requiring a specific 12.1-inch SVGA LCD configuration. Exact electrical and mechanical compatibility should always be verified before replacement.

Key Features

• Sharp LQ121S1LG75 industrial TFT-LCD module
• 12.1-inch diagonal display
• 800 × 600 SVGA resolution
• Approximately 82 PPI
• 4:3 aspect ratio
• a-Si TFT-LCD technology
• TN, Normally White, Transmissive display mode
• 246 × 184.5 mm active display area
• 330 cd/m² typical luminance
• 800:1 typical contrast ratio
• 16.2 million supported colors
• 100% sRGB listed on the supplied product page
• Antiglare surface
• 3H hard coating
• Single-channel, 8-bit LVDS interface
• 30-pin connector
• 60 Hz frame rate
• 3.3V typical LCD supply
• White LED backlight
• Integrated LED driver
• 50,000-hour typical backlight life
• 180-degree reverse display capability
• Landscape orientation
• -10°C to +75°C operating temperature according to technical references
• -30°C to +75°C storage temperature according to technical references
• Refurbished condition
• 3-month warranty

Technical Specifications

The specifications above have been cross-checked against available technical references for the exact LQ121S1LG75 model and the supplied product page.

Temperature note: The supplied product page contains inconsistent operating and storage temperature labels in different sections. Available technical references specify -10°C to +75°C for operation and -30°C to +75°C for storage, which are used above.

12.1 Inch 800 × 600 SVGA Display

The Sharp LQ121S1LG75 features a 12.1-inch diagonal screen with an 800 × 600 SVGA resolution. Its 246 × 184.5 mm active area provides the traditional 4:3 display format commonly used in industrial computers, medical equipment, control systems, and legacy embedded applications.

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

For replacement applications, the screen size and resolution should only be considered part of the compatibility check. Active area, overall dimensions, mounting arrangement, connector, LVDS configuration, pinout, supply voltage, backlight system, and controller compatibility should also be verified.

Display Technology

The LQ121S1LG75 uses amorphous silicon TFT-LCD technology with a TN, Normally White, Transmissive display configuration. It uses an RGB vertical stripe pixel arrangement and supports 16.2 million colors.

The panel uses a single-channel, 8-bit LVDS signal configuration. This is important when matching the display to an existing controller because a panel with the same resolution but a different LVDS configuration may not operate correctly.

The TN display technology also determines the optical characteristics of the panel. Replacing it with an LCD based on another technology should not be assumed to provide identical viewing characteristics or electrical compatibility.

Brightness and Contrast

The LQ121S1LG75 has a typical brightness of 330 cd/m² and a typical contrast ratio of 800:1. These specifications describe the panel's luminance and its ability to distinguish between darker and brighter image areas.

The viewing angles are approximately 80° left, 80° right, 60° up, and 80° down under the specified CR ≥ 10 measurement condition. The specified viewing direction is 6 o'clock.

The panel has a matte antiglare surface with 3H hard coating. These surface characteristics can be useful in equipment where ambient reflections and routine handling need to be considered.

Interface and Connector

The Sharp LQ121S1LG75 uses a single-channel, 8-bit LVDS interface through a 30-pin connector. The LCD supply voltage is typically 3.3V and the specified frame rate is 60 Hz.

Available technical references identify the connector as a JAE FI-XPB30SRL-HF11 type.

The exact LVDS signal mapping, power connections, connector orientation, and timing requirements should be checked against the applicable technical documentation before installation.

A 30-pin connector does not automatically guarantee compatibility. Another 30-pin LCD can have a different LVDS pinout, signal mapping, voltage configuration, timing, or control arrangement.

Before connecting the LQ121S1LG75, verify:

• Complete connector pinout
• LVDS channel configuration
• 8-bit signal configuration
• LVDS signal mapping
• LCD supply voltage
• Connector orientation
• Display timing
• Controller compatibility

Backlight

The LQ121S1LG75 uses a white LED backlight with an integrated LED driver. The typical specified backlight life is 50,000 hours. The backlight interface is integrated with the panel signal interface.

The integrated LED driver is an important characteristic when replacing an older display. The existing equipment's backlight power and control arrangement should still be checked to ensure it is compatible with the panel.

Unlike older 12.1-inch Sharp panels that use CCFL lamps, the LQ121S1LG75 uses WLED backlighting. A different LED-backed LCD should still not be considered a direct replacement solely because it has the same screen size and resolution.

Mechanical Dimensions

The LQ121S1LG75 has a 246 × 184.5 mm active display area and approximately 265 × 205 × 10 mm overall dimensions according to available panel references. The maximum panel weight is approximately 550 g.

The physical dimensions are important when installing the display inside an existing industrial or medical equipment enclosure. Width, height, depth, mounting holes, connector location, and cable clearance should all be compared with the original LCD.

Two 12.1-inch SVGA panels can have identical resolution and similar active areas but different physical dimensions or mounting arrangements.

Operating Temperature

Technical references specify an operating temperature range of -10°C to +75°C and a storage temperature range of -30°C to +75°C for the LQ121S1LG75. A maximum vibration level of 1.0G is also specified.

These environmental specifications apply to the LCD module itself. The display controller, power supply, cables, enclosure, and other electronics may have different temperature and vibration limitations.

For equipment exposed to demanding environmental conditions, the complete display assembly should be evaluated rather than relying only on the LCD panel rating.

Industrial Applications

The LQ121S1LG75 is a 12.1-inch SVGA TFT-LCD module with an LVDS interface and integrated WLED driver. Available product references identify industrial and medical applications for this panel.

Potential applications include:

• Industrial PCs
• HMI systems
• Industrial control panels
• CNC machine interfaces
• Factory automation equipment
• Machine monitoring systems
• Process control equipment
• Medical equipment
• Medical monitoring systems
• Measuring instruments
• Industrial instrumentation
• Embedded computing systems
• 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 LQ121S1LG75 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
• 12.1-inch screen size
• 800 × 600 resolution
• Active display area
• Overall dimensions
• Panel thickness
• Mounting holes and mounting arrangement
• Connector type and location
• 30-pin connector configuration
• Complete LVDS pinout
• Single-channel LVDS configuration
• 8-bit signal configuration
• Display timing requirements
• 3.3V supply requirement
• WLED backlight configuration
• Integrated LED driver requirements
• Backlight power and control signals
• Controller compatibility
• Operating temperature requirements
• Mechanical clearance

A similar 12.1-inch size, 800 × 600 resolution, or 30-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 configuration, and controller compatibility should all be verified.

The LQ121S1LG75 is identified as a discontinued Sharp display in some component references, making exact model verification particularly important when sourcing it for legacy equipment.

Product Details

Product: Sharp LQ121S1LG75 LCD Module
Brand: Sharp
Model: LQ121S1LG75
Display Size: 12.1 inches
Resolution: 800 × 600 pixels, SVGA
Panel Type: a-Si TFT-LCD
Display Type: Color TFT-LCD Module
Display Mode: TN, Normally White, Transmissive
Interface: LVDS, 1 channel, 8-bit
Connector: 30-pin
Brightness: 330 cd/m² typical
Contrast Ratio: 800:1 typical
Supply Voltage: 3.3V typical
Backlight: WLED
Backlight Life: 50,000 hours typical
Backlight Driver: Integrated LED driver
Operating Temperature: -10°C to +75°C
Storage Temperature: -30°C to +75°C
Touch Screen: No
Condition: Refurbished
Warranty: 3 months

Handling and Installation Precautions

The LQ121S1LG75 contains delicate LCD glass, a front polarizer, driver electronics, and LED 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 30-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 supply before installation.
• Verify LVDS signal mapping and timing.
• Confirm the LED backlight power and control connections.
• Follow appropriate ESD precautions when handling the module.
• Keep the display away from moisture.
• Wipe away water drops immediately to help prevent discoloration or spots.
• Avoid dropping, bending, twisting, or striking the panel.
• Do not place excessive pressure on the rear circuit board.
• Protect the connector and cable from excessive bending.
• Do not attempt to open or modify the LCD module.
• Provide sufficient clearance for the connector and wiring.
• Confirm that the equipment operates within the specified temperature range.

Frequently Asked Questions

What is the Sharp LQ121S1LG75?

The Sharp LQ121S1LG75 is a 12.1-inch a-Si TFT-LCD module with an 800 × 600 SVGA resolution, TN Normally White display mode, single-channel 8-bit LVDS interface, and WLED backlight.

What is the resolution of the LQ121S1LG75?

The LQ121S1LG75 has an 800 × 600 pixel SVGA resolution.

What is the screen size of the LQ121S1LG75?

The Sharp LQ121S1LG75 has a 12.1-inch diagonal display with a 246 × 184.5 mm active display area.

What type of display is the LQ121S1LG75?

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

What is the brightness of the LQ121S1LG75?

The typical brightness is 330 cd/m².

What is the contrast ratio of the LQ121S1LG75?

The typical contrast ratio is 800:1.

What interface does the LQ121S1LG75 use?

The panel uses a single-channel, 8-bit LVDS interface.

How many pins does the LQ121S1LG75 connector have?

The LQ121S1LG75 uses a 30-pin LVDS connector. Connector count alone does not establish compatibility, so the complete pinout and electrical configuration should be verified before installation.

What type of backlight does the LQ121S1LG75 use?

The panel uses a white LED backlight with an integrated LED driver and a typical specified life of 50,000 hours.

Does the LQ121S1LG75 have a touchscreen?

No. The standard LQ121S1LG75 is specified as a display module without a touchscreen.

What are the dimensions of the LQ121S1LG75?

The active area is 246 × 184.5 mm, while the listed overall dimensions are approximately 265 × 205 × 10 mm. The maximum panel weight is approximately 550 g.

What is the operating temperature of the LQ121S1LG75?

Available technical references specify an operating temperature range of -10°C to +75°C and a storage range of -30°C to +75°C.

Can the LQ121S1LG75 be used as a replacement LCD?

It can be considered for compatible equipment requiring a 12.1-inch 800 × 600 TFT-LCD with a single-channel 8-bit LVDS interface and WLED backlight. Before installation, verify the exact model and suffix, dimensions, mounting, 30-pin LVDS pinout, 3.3V supply, display timing, backlight connections, and controller compatibility. A similar screen size, resolution, or connector does not automatically guarantee direct compatibility.