Sharp LQ121S1LG72 12.1 Inch TFT LCD Display

The Sharp LQ121S1LG72 is a 12.1-inch color TFT-LCD module designed around an 800 × 600 SVGA resolution. It uses a-Si TFT-LCD technology with a TN, Normally White, Transmissive display mode and a traditional 4:3 format. The panel has a 246.0 × 184.5 mm active display area and approximately 82 PPI pixel density, making it suitable for systems that require a compact industrial-format display.

The display provides a typical brightness of 300 cd/m² and a typical contrast ratio of 900:1. It supports 16.2 million colors and provides viewing angles of approximately 80° left, 80° right, 60° up, and 80° down under the specified CR ≥ 10 condition. The panel has a matte, antiglare surface with 3H hard coating.

The LQ121S1LG72 uses a single-channel, 8-bit LVDS interface with a 30-pin connector and a typical 3.3V supply. It incorporates a white LED backlight and an integrated LED driver, with a specified backlight life of approximately 50,000 hours. The module also supports 180-degree reverse display operation.

The LQ121S1LG72 can be relevant for compatible industrial computers, control equipment, embedded systems, monitoring equipment, and legacy display applications. Because this is a model-specific LCD module, the exact electrical and mechanical configuration should be verified before using it as a replacement.

Key Features

• Sharp LQ121S1LG72 TFT-LCD module
• 12.1-inch diagonal display
• 800 × 600 SVGA resolution
• 4:3 aspect ratio
• Approximately 82 PPI
• a-Si TFT-LCD technology
• TN, Normally White, Transmissive display mode
• 246.0 × 184.5 mm active area
• 300 cd/m² typical brightness
• 900:1 typical contrast ratio
• 16.2 million colors
• Approximately 76% color gamut according to available panel references
• Matte antiglare surface
• 3H hard coating
• Single-channel, 8-bit LVDS interface
• 30-pin connector
• 60 Hz frame rate
• 3.3V typical input voltage
• 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
• -30°C to +75°C storage temperature
• Maximum panel weight of approximately 550 g

Technical Specifications

The specifications above are based on available technical references for the exact Sharp LQ121S1LG72 model.

12.1 Inch 800 × 600 SVGA Display

The Sharp LQ121S1LG72 features a 12.1-inch display with an 800 × 600 pixel SVGA resolution. Its 246.0 × 184.5 mm active area provides a conventional 4:3 display format.

The approximately 82 PPI pixel density provides sufficient detail for displaying machine parameters, numerical values, menus, alarms, status indicators, control interfaces, measurement data, and graphical operating screens.

For replacement applications, the resolution and diagonal size should only be treated as part of the compatibility assessment. The active area, outline dimensions, mounting arrangement, connector, LVDS pinout, voltage, backlight configuration, and controller requirements should also be checked.

Display Technology

The LQ121S1LG72 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 an 8-bit LVDS signal configuration. This allows the display to reproduce a higher number of color levels than older 6-bit configurations. The exact controller output must nevertheless match the panel's LVDS configuration.

A replacement panel using the same resolution but a different TFT technology may have different viewing characteristics and electrical requirements. Therefore, the exact LQ121S1LG72 model should be compared with the original display before replacement.

Brightness and Contrast

The LQ121S1LG72 has a typical brightness of 300 cd/m² and a typical contrast ratio of 900:1. These specifications describe the panel's luminance and its ability to distinguish darker and brighter image areas.

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

The matte surface and 3H hard coating help define the optical and physical surface characteristics of the display and can be useful where ambient reflections need to be controlled.

Interface and Connector

The Sharp LQ121S1LG72 uses a single-channel, 8-bit LVDS interface through a 30-pin connector. The panel has a typical 3.3V input supply and operates at a 60 Hz frame rate.

Available technical references identify the connector as a 30-pin JAE FI-XPB30SRL-HF11 type.

The connector provides the LVDS display signals along with power and other required connections. The exact pin assignment should be verified against the applicable technical documentation before connecting the panel to a controller.

A 30-pin connector alone does not guarantee compatibility. Another LCD can use the same number of pins while having a different pinout, LVDS mapping, power arrangement, timing configuration, or control requirements.

Before installation, verify:

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

Backlight

The LQ121S1LG72 uses a white LED backlight with an integrated LED driver. The specified backlight life is approximately 50,000 hours.

The integrated driver is an important part of the panel's electrical configuration. The backlight connection and control requirements should still be checked against the equipment's existing display controller.

The LQ121S1LG72 differs from older Sharp 12.1-inch panels that use CCFL backlighting. Therefore, a CCFL-to-LED replacement should not be assumed to be electrically interchangeable simply because the screen size and resolution are the same.

Mechanical Dimensions

The LQ121S1LG72 has an active display area of 246.0 × 184.5 mm. Available technical references list an outline size of approximately 265 × 205 × 10 mm, with a maximum weight of approximately 550 g.

The bezel area is approximately 249.6 × 188.1 mm. The module also uses side mounting holes, with references identifying four M2 mounting holes on the upper and lower bezel areas.

These dimensions are important when replacing an LCD inside an existing enclosure. The width, height, depth, active area, mounting locations, connector position, and cable clearance should all be compared with the original panel.

A different 12.1-inch 800 × 600 LCD may have substantially different mechanical dimensions even when the resolution is identical.

Operating Temperature

The LQ121S1LG72 is specified for an operating temperature range of -10°C to +75°C and a storage temperature range of -30°C to +75°C. Available references also identify a maximum vibration level of approximately 1.0G.

These specifications apply to the LCD module. The controller, power supply, cables, enclosure, and other electronics may have different environmental limits.

For equipment operating in demanding environments, the complete display assembly should be evaluated rather than relying solely on the LCD panel's temperature specification.

Industrial Applications

The LQ121S1LG72 is a 12.1-inch SVGA TFT-LCD module with an LVDS interface and integrated WLED driver. Its compact 4:3 format makes it relevant to equipment where an existing display requires this particular 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
• Monitoring equipment
• Operator interface terminals
• Legacy industrial machinery
• Control and automation equipment
• Compatible gaming and amusement equipment

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

Compatibility and Replacement Note

The Sharp LQ121S1LG72 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
• Bezel dimensions
• 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 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 another LCD is a direct replacement.

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

The LQ121S1LG72 is also identified in available panel databases as a discontinued model, so exact model verification is particularly important when sourcing it for legacy equipment.

Product Details

Product: Sharp LQ121S1LG72 LCD Display
Brand: Sharp
Model: LQ121S1LG72
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: 300 cd/m² typical
Contrast Ratio: 900:1 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: Without touchscreen
Condition: Not specified
Warranty: Not specified

Handling and Installation Precautions

The LQ121S1LG72 contains delicate LCD glass, polarizer material, driver electronics, and LED backlight circuitry. Careful handling is required during 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 30-pin LVDS connector carefully.
• Do not force the connector into position.
• Verify the complete pinout before applying power.
• Confirm the required 3.3V supply.
• Verify LVDS signal mapping and timing.
• Confirm the 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 apply excessive pressure to the rear circuit board.
• Protect the connector and cable from excessive bending.
• Provide adequate clearance for the rear connector and wiring.
• Confirm that the equipment operates within the specified temperature range.

Frequently Asked Questions

What is the Sharp LQ121S1LG72?

The Sharp LQ121S1LG72 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 LQ121S1LG72?

The LQ121S1LG72 has an 800 × 600 pixel SVGA resolution.

What is the screen size of the LQ121S1LG72?

The Sharp LQ121S1LG72 has a 12.1-inch diagonal display with a 246.0 × 184.5 mm active display area.

What type of display is the LQ121S1LG72?

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

What is the brightness of the LQ121S1LG72?

The typical brightness is 300 cd/m².

What is the contrast ratio of the LQ121S1LG72?

The typical contrast ratio is 900:1.

What interface does the LQ121S1LG72 use?

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

How many pins does the LQ121S1LG72 connector have?

The LQ121S1LG72 uses a 30-pin LVDS connector. However, the connector count alone does not guarantee compatibility. The complete pinout and electrical configuration should be verified before installation.

What type of backlight does the LQ121S1LG72 use?

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

Does the LQ121S1LG72 have a touchscreen?

The standard LQ121S1LG72 specification identifies it as a display without a touchscreen.

What are the dimensions of the LQ121S1LG72?

The active area is 246.0 × 184.5 mm. The listed outline dimensions are approximately 265 × 205 × 10 mm, with a maximum weight of approximately 550 g.

What is the operating temperature of the LQ121S1LG72?

The specified operating temperature range is -10°C to +75°C, while the storage temperature range is -30°C to +75°C.

Can the LQ121S1LG72 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.