What Is the LQ084V1DG43?
LQ084V1DG43 is an 8.4-inch LCD panel from Sharp. This module is a color active matrix LCD module incorporating amorphous silicon TFT (Thin Film Transistor). It is composed of a color TFT-LCD panel, driver ICs, control circuit, power supply circuit and a backlight unit.
Graphics and texts can be displayed on a 640×3×480 dots panel with 262,144 colors by supplying an 18-bit data signal (6-bit/color), four timing signals, +3.3V/5.0V DC supply voltage for TFT-LCD panel driving, and supply voltage for backlight. The viewing angle is 12 o'clock. A backlight-driving LED controller is built into this module.
LQ084V1DG43 Technical Specifications
The LQ084V1DG43 LCD has 8.4 inch display size and mature, stable industrial-grade performance. The following detailed specifications will provide you with a quick overview of this LCD module's core characteristics.
TYPE | DESCRIPTION |
Brand | |
Model | LQ084V1DG43 |
Size | |
Composition | LCM |
Resolution | 640(RGB)×480, VGA 95PPI |
Luminance | 300 cd/m² (Typ.) |
Contrast Ratio | 600:1 (Typ.) (TM) |
Viewangle | 70/70/60/50 |
Color Depth | 262K |
Light Source | WLED , 70K hours , With LED Driver |
Interface Type | Parallel RGB (1 ch, 6-bit) , 31 pins Connector |
Pixel Format | RGB Vertical Stripe |
Active Area | 154.6(W)×93.64(H) mm |
Frame Rate | 60Hz |
Touchscreen | Without |
Voltage Supply | 3.3/5.0V (Typ.)(VCC) |
Weight | 340g (Max.) |
Outline Size | 221(H)×152.4(V) ×9.8(D) mm |
Max Ratings | Operating Temperature:-10 ~ 70 °C ; Storage Temperature: -25 ~ 70°C |
LQ084V1DG43 Mechanical Structure
The mechanical structure of the LQ084V1DG43 is designed for durability and long-term industrial use. Below is a brief overview of its structural design and components.
1. Outline Dimensions & Active Area
l Outline Dimensions: Approximately 221.0(W) × 152.0(H) × 9.0(D) mm
l Active Area: 170.88(W) × 128.16(H) mm with an 8.4-inch diagonal size and standard 4:3 aspect ratio.
2. Frame Material & Structural Strength
The module uses a high-strength SECC galvanized steel or stainless-steel frame. This metal housing protects the internal glass panel and backlight system while also providing excellent EMI shielding performance.
3. Mounting Structure
l Mounting Holes: Standard screw holes are located around the module for secure installation into industrial equipment.
l Bezel Design: The front bezel features a precise opening structure, making it suitable for adding resistive or capacitive touch panels.
4. Rear Components & Interface Layout
The T-CON board is mounted on the rear side of the module, while signal input is provided through a traditional 31-pin connector. Since the module uses a CCFL backlight, the high-voltage lamp cable is routed separately with insulated protection for connection to an external inverter.
LQ084V1DG43 Key Performance Advantages
A stable and reliable LCD panel not only influences display quality but also directly impacts the operational stability. The LQ084V1DG43 offers multiple key performance advantages:
Long-Life WLED Backlight System
Featuring an integrated WLED backlight with a built-in LED driver, the system boasts a backlight lifespan exceeding 70,000 hours.
Wide Operating Temperature Range
Supports an operating temperature range of -10°C to 70°C, as well as a storage temperature range of -25°C to 70°C.
Excellent Vibration Resistance
Capable of withstanding vibration levels of up to 1.0G (9.8 m/s²) for use in industrial automation equipment, in-vehicle terminals, and mechanical control systems.
Multi-Directional Mounting Support
Features Up/Down (U/D) and Left/Right (L/R) display inversion functions, allowing for flexible adaptation to various device structures.
Anti-Glare (Matte) Surface Design
The screen features a matte anti-glare finish that effectively minimizes reflections from ambient light.
Modular Backlight Maintenance
Supports a Lamp Replaceable design, allowing for easy maintenance or replacement of the backlight system should it degrade over time.
LQ084V1DG43 Typical Application Scenarios
Due to its industrial-grade performance, the LQ084V1DG43 is widely used across multiple industrial application fields.
1. Industrial Automation Control Systems
One of the most common applications is in industrial HMI operator panels, widely used in PLC control cabinets, production line terminals, and equipment operation interfaces.
l Real-time display of system status (temperature, pressure, speed, etc.)
l Supports parameter setting and process monitoring
l Suitable for 24/7 continuous operation environments
l VGA resolution ensures compatibility with many mature industrial motherboards
2. Industrial Testing and Measurement Equipment
In high-precision testing systems, this display is used to present waveforms, data curves, and measurement results.
l Oscilloscopes and signal analyzers
l Electronic test benches and calibration equipment
l Data acquisition and analysis systems (DAQ)
3. Medical Electronic Devices and Monitoring Systems
This model is also commonly used in medical-grade human-machine interface display modules.
l Patient monitors
l Blood analysis equipment
l Portable diagnostic devices
4. Transportation and Rail Industrial Control Systems
In rail and industrial transport systems, the display is used in control and monitoring terminals.
l Subway/light rail control panels
l Vehicle-mounted industrial terminals
l Signal monitoring and dispatch systems
5. Energy and Power Monitoring Systems
In energy management and power dispatch systems, this display is used for critical data visualization.
l Power distribution cabinet interfaces
l SCADA system terminals
l Energy management and monitoring equipment
LQ084V1DG43 Datasheet
What to Consider When Purchasing LQ084V1DG43?
When purchasing the LQ084V1DG43, the key focus should be on identifying genuine new units and evaluating the backlight condition. This model uses a CCFL backlight, and there are many refurbished or pulled units in the market. If used or aged parts are mistakenly adopted, issues such as reduced brightness, yellowing, or high-voltage failure may occur.
Original new units typically show no scratches or screw marks, and the backlight remains in full service life. In contrast, refurbished units often have already consumed a significant portion of their lifespan (around 20,000–50,000 hours for new units), resulting in noticeably lower stability. Therefore, for bulk procurement, suppliers should provide OQC inspection reports and conduct power-on testing, focusing on brightness, white balance, and power consumption.
In addition, this model is a mature industrial LCD product and may face EOL (End-of-Life) risks or supply shortages. Industrial control and medical applications usually require a stable 5–10 year supply guarantee. It is recommended to confirm inventory stability in advance and consider Pin-to-Pin replacement options or CCFL-to-LED backlight upgrades to reduce supply chain risks.
Handling Precautions
1. Always turn off the power before connecting or disconnecting cables.
2. Avoid twisting, bending, or applying extra stress during installation.
3. Protect the front polarizer from scratches and impact damage.
4. Remove water drops immediately to prevent discoloration or stains.
5. Clean the panel only with soft cloth or absorbent cotton.
6. Handle the glass LCD panel carefully to avoid cracks or breakage.
7. Use proper anti-static protection when handling the module.
8. Do not apply pressure to the rear circuit board during assembly.
9. Peel off the protective film slowly before use and avoid static buildup.
10. Avoid direct sunlight exposure to prevent display degradation.
11. Connect mounting hole GND points properly for EMI protection.
12. Turn off power before servicing the high-voltage backlight area.
13. Do not dismantle the module or remove original insulating tapes.
14. Avoid displaying fixed images for long periods to reduce afterimage risk.
15. CCFL backlight performance may decrease rapidly under long-term low-temperature operation.
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