AUO G121SN01-V.4 12.1 Inch TFT LCD Panel

The AUO G121SN01-V.4 LCD Panel is a 12.1-inch industrial TFT-LCD module designed for industrial PCs, automation equipment, HMI systems, machine control interfaces, medical equipment, embedded systems, and LCD replacement applications. It features an 800 × 600 SVGA resolution with a traditional 4:3 aspect ratio and approximately 82 PPI pixel density.

The panel uses a-Si TFT-LCD technology with TN, normally white, transmissive display mode. It provides a typical luminance of 450 cd/m² and a 700:1 contrast ratio, delivering clear and readable display performance for machine parameters, control interfaces, monitoring information, and graphical content.

The G121SN01-V.4 uses a 1-channel LVDS, 6/8-bit interface with a 20-pin connector and operates from a typical 3.3V supply. It incorporates a 9S2P WLED backlight with an integrated LED driver and a specified backlight life of approximately 50,000 hours. The panel also supports a wide operating temperature range of -30°C to 85°C, making it suitable for demanding industrial environments.

Key Features

·        Brand: AUO

·        Model: G121SN01-V.4

·        Display Size: 12.1 inches

·        Panel Technology: a-Si TFT-LCD

·        Resolution: 800 × 600 pixels (SVGA)

·        Pixel Density: Approximately 82 PPI

·        Aspect Ratio: 4:3

·        Display Mode: TN, Normally White, Transmissive

·        Brightness: 450 cd/m² typical

·        Contrast Ratio: 700:1 typical

·        Supported Colors: 262K / 16.2M

·        Color Gamut: 55% NTSC

·        Viewing Angle: 80/80/65/75° typical

·        Viewing Direction: 6 o'clock

·        Response Time: 25/10 ms typical

·        Interface: LVDS, 1 channel, 6/8-bit

·        Connector: 20-pin

·        Refresh Rate: 60 Hz

·        LCD Supply Voltage: 3.3V typical

·        Backlight: WLED, 9S2P

·        LED Driver: Integrated

·        Backlight Life: 50,000 hours

·        Surface Treatment: Antiglare, 3H hard coating

·        Active Area: 246 × 184.5 mm

·        Outline Dimensions: 279 × 209 × 9 mm

·        Operating Temperature: -30°C to 85°C

·        Storage Temperature: -30°C to 85°C

·        Touch Screen: No

·        Orientation: Landscape

·        Maximum Weight: Approximately 580 g

·        Condition: New

·        Warranty: 3 Months

Technical Specifications

The technical specifications are supported by AUO-related documentation and available product references for the G121SN01-V.4.

12.1-Inch SVGA Industrial Display

The AUO G121SN01-V.4 features a 12.1-inch screen with an 800 × 600 SVGA resolution and a traditional 4:3 aspect ratio. Its active display area measures approximately 246 × 184.5 mm, providing a practical viewing area for industrial interfaces, equipment monitoring, machine parameters, control menus, and graphical information.

The 4:3 display format makes this panel suitable for industrial and legacy systems designed around conventional SVGA display dimensions.

450 cd/m² Brightness and 700:1 Contrast

The G121SN01-V.4 provides a typical luminance of 450 cd/m² and a 700:1 contrast ratio. These specifications allow text, graphics, status indicators, and machine-control information to be displayed with good separation between bright and dark areas.

The panel supports 262K or 16.2 million colors, depending on the input configuration, with approximately 55% NTSC color coverage.

TN Normally White Display Technology

The G121SN01-V.4 uses TN, normally white, transmissive TFT-LCD technology. Its typical viewing angles are approximately 80° left, 80° right, 65° upward, and 75° downward at CR≥10.

The specified optimum viewing direction is 6 o'clock, which should be considered when integrating the panel into equipment or replacing an existing display.

Antiglare Surface with 3H Hard Coating

The panel features an antiglare surface with 3H hard coating. The antiglare treatment helps reduce reflections from ambient lighting, while the hard coating provides additional surface protection during handling and normal operation.

This combination can be useful for industrial control panels, machine interfaces, and embedded equipment installed in environments with varying lighting conditions.

LVDS Interface with 20-Pin Connector

The AUO G121SN01-V.4 uses a 1-channel LVDS, 6/8-bit interface through a 20-pin connector. The typical LCD supply voltage is 3.3V.

The original technical documentation also states that the LVDS input is compatible with the G121SN01 V3 interface. However, compatibility should always be confirmed against the specific equipment, pin assignment, and electrical requirements before installation.

WLED Backlight with Integrated LED Driver

The G121SN01-V.4 incorporates a 9S2P WLED backlight with an integrated LED driver. The specified backlight life is approximately 50,000 hours. The available AUO documentation also indicates that the LED unit is replaceable.

The LED backlight configuration provides a long-life illumination solution for industrial display applications.

Wide Operating Temperature Range

The G121SN01-V.4 supports an operating temperature range of -30°C to 85°C and a storage temperature range of -30°C to 85°C.

This wide temperature range makes the panel suitable for industrial equipment that may experience significant temperature variations during operation.

Compact 9 mm Panel Design

The G121SN01-V.4 has overall dimensions of approximately 279 × 209 × 9 mm, with an active display area of 246 × 184.5 mm.

Its relatively slim profile can be useful for industrial control systems, embedded equipment, HMI panels, and replacement applications where installation depth needs to be considered.

Industrial Applications

The AUO G121SN01-V.4 is designed for industrial display applications and can be used in systems requiring a 12.1-inch SVGA TFT-LCD with LVDS connectivity.

Typical applications include:

·        Industrial PCs

·        Industrial automation equipment

·        HMI systems

·        Machine control interfaces

·        CNC equipment

·        Control panels

·        Factory automation systems

·        Process monitoring equipment

·        Instrumentation systems

·        Medical equipment

·        Medical monitoring systems

·        Manufacturing equipment

·        Embedded display systems

·        Operator control stations

·        Industrial control systems

·        OEM equipment

·        Legacy equipment refurbishment

·        LCD replacement applications

Available technical references specifically identify applications including industrial control, medical equipment, solar equipment, flow meters, fire alarms, elevators, and industrial machines.

Compatibility and Replacement Note

The AUO G121SN01-V.4 can be considered for replacement applications where the original display requires compatible electrical, mechanical, optical, and backlight specifications.

Before ordering, compare the following details with the existing LCD:

·        Exact model number

·        Display dimensions

·        Active display area

·        Mounting arrangement

·        Connector type

·        20-pin connector configuration

·        Pin assignment

·        LVDS channel configuration

·        6-bit/8-bit signal configuration

·        LCD supply voltage

·        Backlight type

·        LED driver configuration

·        Display resolution

·        Viewing direction

·        Operating temperature range

A 12.1-inch 800 × 600 LVDS display is not automatically a direct replacement for the G121SN01-V.4. Always verify the complete electrical, mechanical, optical, interface, and backlight specifications before installation.

Product Details

Product: AUO G121SN01-V.4 LCD Panel
Brand: AUO
Model: G121SN01-V.4
Display Size: 12.1 Inch
Resolution: 800 × 600 SVGA
Panel Type: a-Si TFT-LCD
Display Mode: TN, Normally White, Transmissive
Interface: LVDS, 1 channel, 6/8-bit
Connector: 20-pin
Backlight: WLED, 9S2P
LED Driver: Integrated
Backlight Life: 50,000 hours
Surface: Antiglare, 3H Hard Coating
Touch Screen: No
Operating Temperature: -30°C to 85°C
Storage Temperature: -30°C to 85°C
Orientation: Landscape
Condition: New
Warranty: 3 Months

Handling and Installation Precautions

LCD modules are delicate electronic components and should be handled carefully during transportation and installation.

·        Do not apply excessive pressure to the LCD surface.

·        Avoid scratching or damaging the front polarizer.

·        Switch off the equipment before connecting or disconnecting the display.

·        Handle the 20-pin connector carefully.

·        Do not bend, twist, or force the connector during installation.

·        Verify the LVDS pin configuration before applying power.

·        Confirm the required 3.3V supply before connecting the module.

·        Keep the display away from water and excessive moisture.

·        Do not drop or impact the LCD module.

·        Do not attempt to modify or disassemble the panel.

·        Follow appropriate ESD precautions when handling the display.

Frequently Asked Questions

What is the AUO G121SN01-V.4?

The AUO G121SN01-V.4 is a 12.1-inch a-Si TFT-LCD module featuring 800 × 600 SVGA resolution, TN normally white transmissive display technology, and a 1-channel LVDS 6/8-bit interface.

What is the resolution of G121SN01-V.4?

The G121SN01-V.4 has an 800 × 600 pixel SVGA resolution with approximately 82 PPI pixel density.

What is the screen size of G121SN01-V.4?

The AUO G121SN01-V.4 has a 12.1-inch diagonal display size with an active area of approximately 246 × 184.5 mm.

What is the brightness of AUO G121SN01-V.4?

The typical luminance of the G121SN01-V.4 is 450 cd/m².

What is the contrast ratio of G121SN01-V.4?

The panel has a typical 700:1 contrast ratio.

What interface does the G121SN01-V.4 use?

The G121SN01-V.4 uses a 1-channel LVDS interface supporting 6-bit/8-bit input through a 20-pin connector.

What type of backlight does G121SN01-V.4 use?

The display uses a 9S2P WLED backlight with an integrated LED driver. The specified backlight life is approximately 50,000 hours.

Does the G121SN01-V.4 have a touch screen?

No. The G121SN01-V.4 is an LCD module without an integrated touch screen.

What is the operating temperature of G121SN01-V.4?

The specified operating temperature range is -30°C to 85°C, with the storage temperature range also specified as -30°C to 85°C.

Is G121SN01-V.4 suitable for industrial applications?

Yes. The G121SN01-V.4 is designed for industrial applications and can be used in industrial PCs, automation systems, HMI equipment, machine interfaces, control panels, instrumentation, medical equipment, and other industrial systems.

Is the AUO G121SN01-V.4 a new LCD panel?

The supplied product listing identifies the G121SN01-V.4 as a new LCD module and lists a 3-month warranty.

What is the supply voltage of G121SN01-V.4?

The typical LCD supply voltage is 3.3V.

Can G121SN01-V.4 be used as a replacement LCD?

It can be used as a replacement when the existing equipment requires compatible specifications. Before installation, verify the exact model, dimensions, mounting arrangement, 20-pin connector, LVDS configuration, pin assignment, power requirements, and WLED backlight specifications.