LQ104V1DG81 Overview
Sharp LQ104V1DG81 is a 10.4-inch color active-matrix TFT-LCD module built with amorphous silicon (a-Si) Thin Film Transistor (TFT) technology. It integrates a TFT-LCD panel, driver ICs, control circuits, power supply circuits, and a White LED backlight into a complete display solution. With a 640 × 480 VGA resolution, support for approximately 262K colors, and a CMOS interface, the module delivers clear graphics and text while operating with a 3.3V DC panel supply.
Designed with a low-reflection surface and high color saturation, the LQ104V1DG81 provides clear image quality for outdoor applications. The panel features an optimal 6 o'clock viewing direction and minimizes grayscale inversion when viewed from the 12 o'clock direction.
LQ104V1DG81 Key Specifications
This section mainly introduces the key technical specifications of the LQ104V1DG81 LCD module, including dimensions, resolution, optical performance, electrical characteristics, operating environment and interface standards. Detailed parameters are shown in the table below.
TYPE | DESCRIPTION |
Brand | |
Model | LQ104V1DG81 |
Size | |
Composition | LCM |
Resolution | 640(RGB)×480, VGA 76PPI |
Luminance | 450 cd/m² (Typ.) |
Contrast Ratio | 800 : 1 (Typ.) (TM) |
Viewangle | 80/80/65/80 |
Color Depth | 262K 50% NTSC |
Light Source | WLED , 50K hours , With LED Driver |
Interface Type | CMOS (1 ch, 6-bit) , 31 pins Connector |
Pixel Format | RGB Vertical Stripe |
Active Area | 214.6(W)×162.4(H) mm |
Frame Rate | 60Hz |
Touchscreen | Without |
Voltage Supply | 3.3V (Typ.) |
Weight | 500g |
Outline Size | 246.5(H)×179.3(V) ×13(D) mm |
Max Ratings | Operating Temperature:-30 ~ 80 °C ; Storage Temperature: -30 ~ 80°C |
LQ104V1DG81 Structure and Principle
The LQ104V1DG81 consists of a TFT-LCD panel, driver ICs, control circuits, power supply circuits, and a White LED backlight. It features a compact outline size of 246.5×179.3×13 mm, with a 640×480 VGA resolution and RGB vertical stripe pixel arrangement. The panel adopts a TN normally white transmissive mode with an integrated WLED backlight.
Based on amorphous silicon TFT active matrix technology, the LQ104V1DG81 receives image signals through a CMOS interface. The driver IC controls individual TFT switches to adjust liquid crystal alignment, delivering 640 × 480 resolution and 262K colors. The built-in WLED backlight provides uniform illumination and stable brightness output.
With a 60Hz refresh rate, integrated timing control, voltage management, and wide-temperature compensation, the module ensures reliable image performance. Combined with independent pixel control, an 800:1 contrast ratio, and 450 cd/m² brightness, it delivers clear, stable, and low-blur images for industrial applications.
LQ104V1DG81 Display Performance and Image Quality
The LQ104V1DG81 delivers stable and clear image performance with industrial-grade optical design. It ensures reliable viewing in various environments.
l 640 × 480 VGA resolution provides clear image details for industrial interfaces, control systems, and embedded applications.
l RGB vertical stripe pixel arrangement enables accurate color reproduction and consistent image quality.
l 0.33 mm pixel pitch balances display clarity and readability for a 10.4-inch screen size.
l 450 cd/m² brightness ensures good visibility in industrial environments with different lighting conditions.
l 800:1 contrast ratio improves text readability and enhances the distinction between graphics and background images.
l Anti-glare surface with 3H hard coating reduces reflections while improving durability and scratch resistance.
LQ104V1DG81 Optical Characteristics
This display delivers a typical brightness of 450 cd/m² (minimum 360 cd/m²) and a typical contrast ratio of 800 at optimized viewing angles, paired with a 35ms total response time covering white-to-black and black-to-white switching. For viewing angles, it reaches a horizontal viewing range of 80°, an upward vertical angle of 65°and a downward vertical angle of 80°when the contrast ratio stays above 10.
LQ104V1DG81 Interface and Electrical Design
The Sharp LQ104V1DG81 adopts a 31-pin CMOS interface and supports 6-bit RGB parallel signal transmission for stable image data input. The module operates with a 3.3V power supply and integrates an LED Driver, simplifying system design while improving backlight control stability. It is suitable for industrial control systems, embedded devices, and other display applications.
When designing a replacement board or developing a driver board, engineers should carefully verify the ENAB signal timing and backlight power parameters to ensure proper data transmission, backlight operation, and display refresh synchronization, preventing issues such as black screens, flickering, or abnormal display performance.
Typical Industrial Applications of LQ104V1DG81
The LQ104V1DG81 LCD offers stable display performance and excellent readability, making it widely used in various industrial display applications. The main applications include:
1. Industrial Automation Systems
Benefiting from stable display performance and dependable operation, the LQ104V1DG81 is ideal for human-machine interfaces (HMIs), control panels and equipment monitoring terminals in industrial automation machinery. Its native 640×480 VGA resolution clearly presents parameter readings, operation menus and real-time status data to support long-duration continuous operation of production line equipment.
2. Medical Equipment Displays
Display panels for medical devices demand sharp visuals, consistent performance and long-term operational stability. The LQ104V1DG81 features high brightness and decent contrast ratio, enabling medical staff to read test results, equipment status and operation interfaces with clarity. It fits patient monitors, diagnostic instruments and portable medical systems perfectly.
3. POS Terminals and Kiosk Systems
The compact form factor and standard VGA output of the LQ104V1DG81 make it a great match for POS cash registers, self-service inquiry kiosks and commercial display units. Its crisp text rendering optimizes user interaction, meeting visual requirements for menus, transaction records and interactive touch interfaces.
4. Industrial PCs and Embedded Systems
Equipped with a CMOS signal interface and 3.3V power supply compatibility, the LQ104V1DG81 integrates seamlessly with embedded control boards, industrial computers and custom dedicated hardware. Its robust TFT display architecture delivers steady long-term data output, suiting space-limited industrial deployment scenarios.
5. Transportation and Outdoor Equipment
With a typical brightness of 450 cd/m² and anti-glare surface coating, the LQ104V1DG81 can be deployed in traffic control hardware, ticketing terminals and outdoor information display systems. It maintains strong screen readability under complicated lighting conditions, allowing operators to access critical data quickly.
6. Industrial Measurement Instruments
The LQ104V1DG81 serves industrial measuring equipment, test benches and monitoring instrumentation well. Consistent color reproduction, a reliable interface scheme and excellent image rendering accurately showcase data curves, technical parameters and device operating states, improving overall equipment operating efficiency.
LQ104V1DG81 Datasheet
Design Considerations for Engineers
1) Strictly follow the specified power-up timing sequence for the 3.3V supply voltage to avoid damaging the internal drive IC of the LQ104V1DG81 module.
2) Complete the power supply of the main display circuit first, then power on the WLED backlight to prevent abnormal flicker or startup failure of the screen.
3) Maintain stable and clean driving level for the ENAB enable signal, and avoid frequent rapid switching to prevent unexpected screen blackout.
4) Reserve sufficient heat dissipation space around the LCD module and add auxiliary heat conduction structures if the equipment needs to operate continuously under high-temperature conditions.
5) Route signal cables and power wires separately with proper grounding treatment to reduce EMI interference that causes screen noise and color distortion.
Mega Source: Explore Standard LCD Display Solutions
Mega Source is a reliable supplier of electronic components and LCD display solutions, offering a broad selection of high-quality modules for industrial, commercial, and professional applications.
Our LCD products are designed for stable performance, clear image quality, and seamless system integration, helping engineers and manufacturers develop dependable and efficient solutions. Whether you are upgrading existing systems or designing new products, Mega Source provides flexible sourcing options and responsive support tailored to your project requirements.
With competitive pricing and an experienced team available via email or phone, Mega Source ensures a smooth and efficient procurement process. For all your LCD display needs, Mega Source is your trusted sourcing partner.
