Sharp LQ121K1LG59 12.1 Inch TFT LCD Panel

The Sharp LQ121K1LG59 is a 12.1-inch industrial TFT-LCD module designed for equipment requiring a high-resolution WXGA display. It provides a 1280 × 800 pixel resolution with a 4:3-class industrial panel size and uses a-Si TFT-LCD technology with a TN, Normally White, Transmissive display mode. The panel has a 261.12 × 163.2 mm active display area and a pixel density of approximately 124 PPI.

The display provides a typical luminance of 400 cd/m² and a typical contrast ratio of 800:1. It supports 262K/16.7M colors with approximately 70% NTSC color coverage. The panel uses an antiglare surface with 3H hard coating and provides viewing angles of 80° left, 80° right, 65° up, and 80° down under the specified CR ≥ 10 measurement condition.

The LQ121K1LG59 uses a 1-channel LVDS interface supporting 6/8-bit signaling through a 30-pin connector. It operates from a typical 3.3V supply and incorporates a white LED backlight with a specified 50,000-hour life and built-in LED driver. The panel is listed as refurbished on the supplied product page and is suitable for compatible industrial PCs, control panels, embedded systems, instrumentation, and legacy equipment requiring this exact display configuration.

Key Features

·        Sharp LQ121K1LG59 industrial TFT-LCD module

·        12.1-inch diagonal display

·        1280 × 800 WXGA resolution

·        Approximately 124 PPI pixel density

·        a-Si TFT-LCD technology

·        TN, Normally White, Transmissive display mode

·        261.12 × 163.2 mm active display area

·        400 cd/m² typical luminance

·        800:1 typical contrast ratio

·        262K/16.7M supported colors

·        Approximately 70% NTSC color coverage

·        Antiglare surface treatment

·        3H hard coating

·        LVDS interface

·        1-channel, 6/8-bit signaling

·        30-pin connector

·        60 Hz frame rate

·        3.3V typical supply

·        WLED backlight

·        Built-in LED backlight driver

·        50,000-hour specified backlight life

·        -30°C to 80°C operating temperature

·        -30°C to 80°C storage temperature

·        Refurbished condition

Technical Specifications

The specifications above are based primarily on the supplied product page and cross-checked against available technical references for the exact LQ121K1LG59 model.

12.1 Inch 1280 × 800 WXGA Display

The Sharp LQ121K1LG59 features a 12.1-inch display with a 1280 × 800 WXGA resolution. Its 261.12 × 163.2 mm active area provides a relatively large viewing area while maintaining a compact overall module size.

With approximately 124 pixels per inch, the panel can display detailed graphical interfaces, machine parameters, status information, measurement data, menus, charts, and other visual information used in industrial systems.

The 1280 × 800 resolution is particularly relevant when replacing a legacy or existing industrial display that was designed around the same WXGA format. Screen size and resolution alone, however, do not establish compatibility. The active area, physical dimensions, mounting arrangement, interface, pinout, voltage, backlight system, and controller must also be verified.

Display Technology

The LQ121K1LG59 uses amorphous silicon TFT-LCD technology with a TN, Normally White, Transmissive display configuration. The TFT architecture provides individual pixel control for displaying text, graphics, images, and equipment interfaces.

The TN panel configuration provides the optical characteristics specified for this model and should be considered when replacing the original LCD with a panel based on a different technology such as IPS.

The display supports 262K/16.7M colors depending on the signaling configuration and provides approximately 70% NTSC color coverage.

Brightness and Contrast

The LQ121K1LG59 has a typical luminance of 400 cd/m² and a typical contrast ratio of 800:1. These specifications indicate the panel's light output and its ability to distinguish between dark and bright image areas.

The specified viewing angles are 80° left, 80° right, 65° up, and 80° down under the CR ≥ 10 condition. The specified viewing direction is 6 o'clock.

The display surface uses antiglare treatment and 3H hard coating. These characteristics are relevant in industrial installations where reflected ambient light and routine handling may affect display usability.

Interface and Connector

The Sharp LQ121K1LG59 uses an LVDS interface with 1-channel, 6/8-bit signaling and a 30-pin connector. The panel operates from a typical 3.3V supply and supports a 60 Hz frame rate.

LVDS is a differential digital display interface commonly used in industrial and embedded LCD systems. The exact LVDS channel configuration, bit depth, timing, pin assignment, and power connections must be matched to the equipment's display controller.

A 30-pin connector does not automatically make another LCD compatible. Two panels can use the same connector count while having different pinouts, signal assignments, power requirements, or timing characteristics.

Before connecting the LQ121K1LG59, verify the complete connector pinout and compare it with the original LCD and controller documentation.

Backlight

The LQ121K1LG59 uses a white LED backlight with a specified life of 50,000 hours. The module includes a built-in LED backlight driver, reducing the need for a separate external LED driver.

The integrated driver is an important part of the module's configuration. When replacing an LCD, the backlight power and control requirements should still be checked against the equipment's original wiring.

A different LED-backlit LCD should not be assumed to be a direct replacement simply because it has the same screen size and resolution. The LED driver arrangement, connector pinout, voltage, and control signals must also be compatible.

Mechanical Dimensions

The LQ121K1LG59 has an active area of 261.12 × 163.2 mm. Its listed outline dimensions are 278 × 184 × 9.6 mm, with a typical weight of approximately 550 g. The listed bezel opening is 264.3 × 167.2 mm.

These dimensions are important for replacement installations because an LCD must physically fit within the original equipment enclosure.

Before ordering, compare the original panel's width, height, thickness, active area, bezel opening, mounting locations, connector position, and cable clearance. Another 12.1-inch WXGA LCD may have different mechanical dimensions even when its resolution is identical.

Operating Temperature

The Sharp LQ121K1LG59 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 wide specified temperature range can be relevant to industrial equipment operating in demanding environments. However, the LCD's rating should not be treated as the rating of the complete system.

The controller, enclosure, cables, power supply, and other electronics may have different operating limits. These components should be evaluated separately when the equipment operates at temperature extremes.

Industrial Applications

The Sharp LQ121K1LG59 is designed around a 12.1-inch WXGA industrial display format and is suitable for systems using a compatible LVDS display interface.

Potential applications include:

·        Industrial PCs

·        HMI systems

·        Industrial control panels

·        Machine control systems

·        CNC equipment

·        Factory automation systems

·        Process monitoring equipment

·        Instrumentation systems

·        Industrial monitoring equipment

·        Embedded computing systems

·        Medical equipment with compatible display electronics

·        Operator interface terminals

·        Legacy industrial machinery

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

Compatibility and Replacement Note

The Sharp LQ121K1LG59 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

·        1280 × 800 resolution

·        Active display area

·        Bezel opening

·        Overall dimensions

·        Panel thickness

·        Mounting holes and mounting arrangement

·        Connector type and position

·        30-pin connector configuration

·        Complete connector pinout

·        LVDS interface

·        1-channel, 6/8-bit configuration

·        Display timing requirements

·        LCD supply voltage

·        LED backlight configuration

·        Built-in LED driver requirements

·        Backlight power and control signals

·        Controller compatibility

·        Operating temperature requirements

·        Mechanical clearance inside the equipment

A similar 12.1-inch size, WXGA 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, dimensions, mounting, LVDS pinout, signal configuration, voltage, backlight arrangement, timing, and controller compatibility should all be verified.

The LQ121K1LG59 is also identified as a discontinued model in Sharp-related product documentation, making exact model verification particularly important when sourcing a replacement for legacy equipment.

For replacement applications, compare the model number printed on the original LCD with LQ121K1LG59 and verify the complete technical specifications before ordering.

Product Details

Product: Sharp LQ121K1LG59 LCD Module
Brand: Sharp
Model: LQ121K1LG59
Display Size: 12.1 inches
Resolution: 1280 × 800 pixels, WXGA
Panel Type: a-Si TFT-LCD, LCM
Display Type: TFT-LCD
Display Mode: TN, Normally White, Transmissive
Interface: LVDS, 1 channel, 6/8-bit
Connector: 30-pin
Brightness: 400 cd/m² typical
Contrast Ratio: 800:1 typical
Supply Voltage: 3.3V typical
Backlight: WLED
Backlight Life: 50,000 hours
Backlight Driver: Built-in LED driver
Operating Temperature: -30°C to 80°C
Storage Temperature: -30°C to 80°C
Touch Screen: No touchscreen specified
Condition: Refurbished
Warranty: Not specified

Handling and Installation Precautions

The LQ121K1LG59 contains delicate LCD glass, polarizer material, and interface circuitry. Careful handling is important during removal, inspection, 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 30-pin LVDS connector carefully.

·        Do not rotate or tilt the connector during insertion or removal.

·        Verify the complete pinout before applying power.

·        Confirm the required 3.3V supply before installation.

·        Verify LVDS signal configuration and timing.

·        Confirm the LED backlight power and control connections.

·        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 panel against hard surfaces.

·        Do not open or modify the LCD module unnecessarily.

·        Provide sufficient clearance for the connector and cables.

·        Confirm that the complete equipment operates within the required temperature range.

Frequently Asked Questions

What is the Sharp LQ121K1LG59?

The Sharp LQ121K1LG59 is a 12.1-inch a-Si TFT-LCD module with a 1280 × 800 WXGA resolution, TN Normally White display mode, LVDS interface, and WLED backlight.

What is the resolution of the LQ121K1LG59?

The LQ121K1LG59 has a 1280 × 800 pixel WXGA resolution.

What is the screen size of the LQ121K1LG59?

The Sharp LQ121K1LG59 has a 12.1-inch diagonal display.

What type of display is the LQ121K1LG59?

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

What is the brightness of the LQ121K1LG59?

The specified typical luminance is 400 cd/m².

What is the contrast ratio?

The LQ121K1LG59 has a typical contrast ratio of 800:1.

What interface does the LQ121K1LG59 use?

The display uses an LVDS interface with 1-channel, 6/8-bit signaling.

How many pins does the LQ121K1LG59 connector have?

The LQ121K1LG59 uses a 30-pin connector. However, connector count alone does not establish compatibility. The complete LVDS pinout and electrical configuration must be verified before installation.

What type of backlight does the LQ121K1LG59 use?

The panel uses a white LED backlight with a specified 50,000-hour life and a built-in LED backlight driver.

Does the LQ121K1LG59 have a touchscreen?

No touchscreen is specified for the LQ121K1LG59. It is supplied as an LCD display module without an integrated touch panel.

What are the dimensions of the LQ121K1LG59?

The active area is 261.12 × 163.2 mm, while the listed overall dimensions are 278 × 184 × 9.6 mm. The typical weight is approximately 550 g.

What is the operating temperature of the LQ121K1LG59?

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

Can the LQ121K1LG59 be used as a replacement LCD?

It can be considered for compatible industrial and embedded equipment requiring a 12.1-inch 1280 × 800 LVDS TFT-LCD. Before installation, verify the exact model and suffix, dimensions, mounting, 30-pin pinout, LVDS configuration, supply voltage, display timing, LED backlight connections, and controller compatibility. A similar size, resolution, or connector does not automatically guarantee direct compatibility.