Sharp LQ121S1LG88 12.1 Inch TFT LCD Panel

The Sharp LQ121S1LG88 is a 12.1-inch industrial color TFT-LCD module designed for equipment requiring an 800 × 600 SVGA display. It uses amorphous silicon TFT-LCD technology with a Normally White, Transmissive display mode and a traditional 4:3 aspect ratio. The panel provides a 246 × 184.5 mm active display area and approximately 82 PPI pixel density, making it suitable for compact industrial and embedded display applications.

The display offers a typical luminance of 450 cd/m² and a typical contrast ratio of 800:1. It supports approximately 262,144 colors and provides viewing angles of 80° left, 80° right, 60° up, and 80° down under the specified CR ≥ 10 condition. The front surface uses antiglare treatment with a 3H hard coating.

The LQ121S1LG88 uses a single-channel, 6-bit LVDS interface with a 20-pin connector and a typical 3.3V supply. It incorporates a white LED backlight with an integrated LED driver and PWM backlight control circuitry. The manufacturer specifies a 50,000-hour reference backlight life.

The supplied product listing identifies this particular LQ121S1LG88 unit as refurbished. The model can be considered for compatible industrial PCs, HMI systems, automation equipment, embedded control systems, instrumentation, and legacy equipment where the original display requires the same electrical and mechanical configuration.

Key Features

• Sharp LQ121S1LG88 industrial TFT-LCD module
• 12.1-inch diagonal display
• 800 × 600 SVGA resolution
• Approximately 82 PPI pixel density
• 4:3 aspect ratio
• a-Si TFT-LCD technology
• Normally White, Transmissive display mode
• 246 × 184.5 mm active display area
• 450 cd/m² typical luminance
• 800:1 typical contrast ratio
• Approximately 262K colors
• 53% NTSC color coverage
• RGB vertical stripe pixel configuration
• Antiglare surface
• 3H hard coating
• Single-channel, 6-bit LVDS interface
• 20-pin connector
• 60 Hz frame rate
• 3.3V typical supply
• White LED backlight
• Integrated LED driver
• PWM backlight control
• 50,000-hour specified backlight life
• -15°C to +70°C operating temperature
• -30°C to +80°C storage temperature
• Refurbished condition

Technical Specifications

The mechanical and electrical specifications above are based on the Sharp technical specification for LQ121S1LG88, with condition information taken from the supplied product listing.

12.1 Inch 800 × 600 SVGA Display

The Sharp LQ121S1LG88 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 format commonly found in industrial computers, control systems, instrumentation, and legacy embedded equipment.

With approximately 82 PPI, the display can provide clear rendering of machine parameters, numerical values, menus, alarms, status information, measurement data, and graphical control interfaces.

For replacement applications, the 12.1-inch size and 800 × 600 resolution should only be considered part of the compatibility assessment. The active area, physical dimensions, mounting arrangement, interface, pinout, supply voltage, backlight configuration, and controller requirements must also be checked.

Display Technology

The LQ121S1LG88 uses amorphous silicon TFT-LCD technology with a Normally White, Transmissive operating mode. The module incorporates the TFT-LCD panel, driver ICs, control circuitry, power circuitry, and white LED backlight unit.

The panel uses a vertical RGB stripe configuration and supports approximately 262,144 colors through its 6-bit LVDS interface. The manufacturer specifies independent RGB gamma adjustment functionality for grayscale reproduction.

The TN display technology determines the panel's viewing characteristics. A replacement LCD using another technology, such as IPS, should not automatically be considered equivalent even when its screen size and resolution match.

Brightness and Contrast

The LQ121S1LG88 provides a typical luminance of 450 cd/m² and a typical contrast ratio of 800:1. These specifications describe the panel's light output and ability to distinguish between darker and brighter areas of an image.

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

The display has an antiglare surface with 3H hard coating. This surface treatment is relevant in industrial installations where ambient reflections and routine handling can affect display usability.

Interface and Connector

The Sharp LQ121S1LG88 uses a single-channel, 6-bit LVDS interface through a 20-pin connector. The panel uses a typical 3.3V supply and operates at a 60 Hz frame rate.

The manufacturer's documentation identifies the CN1 display interface as a 20-pin connection and specifies compatible connector types including FI-SE20M and FI-S20S. The LVDS receiver is built into the control IC.

The interface carries the LVDS display signals together with power and ground connections. The exact pin assignment must be verified against the applicable technical documentation before connecting the panel.

A 20-pin connector alone does not guarantee compatibility. Another LCD with a 20-pin connector may use a different LVDS pinout, signal mapping, voltage arrangement, timing configuration, or controller requirement.

Before installation, verify:

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

Backlight

The LQ121S1LG88 uses a white LED backlight. The manufacturer specifies a backlight life of 50,000 hours and incorporates the LED driver circuit and PWM control circuit into the module.

The integrated LED driver is an important part of the panel's electrical configuration. The equipment's backlight power and control arrangement should still be checked before installation.

Unlike older Sharp 12.1-inch displays that use CCFL lamps, the LQ121S1LG88 uses a white LED backlight. A different LED-backlit LCD should nevertheless not be assumed to be a direct replacement simply because it has the same screen size and resolution.

Mechanical Dimensions

The LQ121S1LG88 has an active area of 246 × 184.5 mm and a viewing area of approximately 249.0 × 187.5 mm. The manufacturer's outline dimensions are approximately 276.0 × 209.0 × 9.1 mm, with a maximum specified mass of 750 g.

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

Two 12.1-inch SVGA displays can have identical resolution and similar active areas while differing in physical dimensions or mounting arrangements. Physical measurements should therefore be checked before ordering a replacement.

Operating Temperature

The product listing specifies an operating temperature range of -15°C to +70°C and a storage temperature range of -30°C to +80°C.

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

For installations exposed to demanding temperatures, the complete display assembly should be evaluated against the applicable specifications rather than relying only on the LCD panel rating.

Industrial Applications

The Sharp LQ121S1LG88 is a 12.1-inch SVGA TFT-LCD module with an LVDS interface and integrated white LED driver. Its compact 4:3 format makes it relevant to equipment where a specific legacy LCD configuration needs to be maintained.

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
• Operator interface terminals
• Industrial monitoring equipment
• Legacy automation machinery
• Compatible control and monitoring systems

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

Compatibility and Replacement Note

The Sharp LQ121S1LG88 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
• Viewing 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
• 3.3V supply requirement
• White LED backlight configuration
• Integrated LED driver requirements
• PWM backlight control
• Controller compatibility
• Operating temperature requirements
• Mechanical clearance

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, dimensions, mounting, LVDS pinout, voltage, timing, backlight configuration, and controller compatibility should all be verified.

The Sharp specification specifically identifies the LQ121S1LG88 as a 20-pin, single-channel LVDS display using a 3.3V supply and integrated LED driver circuitry. These characteristics should be matched with the original equipment before installation.

For legacy replacement applications, compare the model number printed on the original LCD with LQ121S1LG88 and verify the complete technical specifications before ordering.

Product Details

Product: Sharp LQ121S1LG88 LCD Module
Brand: Sharp
Model: LQ121S1LG88
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, 6-bit
Connector: 20-pin
Brightness: 450 cd/m² typical
Contrast Ratio: 800:1 typical
Supply Voltage: 3.3V typical
Backlight: White LED
Backlight Life: 50,000 hours
Backlight Driver: Integrated LED driver
Backlight Control: PWM
Operating Temperature: -15°C to +70°C
Storage Temperature: -30°C to +80°C
Touch Screen: Not included
Condition: Refurbished
Warranty: Not specified

Handling and Installation Precautions

The LQ121S1LG88 contains delicate LCD glass, polarizer material, 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 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 supply before installation.
• Verify LVDS signal mapping and timing.
• Confirm the LED backlight power and PWM control requirements.
• 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 adequate clearance for the connector and wiring.
• Confirm that the equipment operates within the specified temperature range.

Frequently Asked Questions

What is the Sharp LQ121S1LG88?

The Sharp LQ121S1LG88 is a 12.1-inch a-Si TFT-LCD module with an 800 × 600 SVGA resolution, Normally White Transmissive display mode, single-channel 6-bit LVDS interface, and white LED backlight.

What is the resolution of the LQ121S1LG88?

The LQ121S1LG88 has an 800 × 600 pixel SVGA resolution.

What is the screen size of the LQ121S1LG88?

The Sharp LQ121S1LG88 has a 12.1-inch diagonal display with a 246 × 184.5 mm active area.

What type of display is the LQ121S1LG88?

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

What is the brightness of the LQ121S1LG88?

The typical luminance is 450 cd/m².

What is the contrast ratio of the LQ121S1LG88?

The typical contrast ratio is 800:1.

What interface does the LQ121S1LG88 use?

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

How many pins does the LQ121S1LG88 connector have?

The LQ121S1LG88 uses a 20-pin connector. Connector count alone does not establish compatibility, so the complete LVDS pinout and electrical configuration should be verified before installation.

What type of backlight does the LQ121S1LG88 use?

The panel uses a white LED backlight with an integrated LED driver and PWM control circuitry. The specified backlight life is 50,000 hours.

Does the LQ121S1LG88 have a touchscreen?

No. The standard LQ121S1LG88 is specified as an LCD module without an integrated touchscreen.

What are the dimensions of the LQ121S1LG88?

The active area is 246 × 184.5 mm and the manufacturer's outline dimensions are approximately 276.0 × 209.0 × 9.1 mm. The maximum specified mass is 750 g.

What is the operating temperature of the LQ121S1LG88?

The supplied product listing specifies an operating temperature range of -15°C to +70°C and a storage range of -30°C to +80°C.

Can the LQ121S1LG88 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 6-bit LVDS interface and white LED backlight. Before installation, verify the exact model and suffix, dimensions, mounting, 20-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.