INDUSTRY COMPONENT

TFT Array

TFT Array is the active matrix substrate in LCD/TFT screens that controls individual pixels through thin-film transistors.

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Component Specifications

Definition
A TFT (Thin-Film Transistor) Array is the fundamental electronic component in LCD/TFT displays that forms the active matrix substrate. It consists of a grid of thin-film transistors deposited on a glass substrate, with each transistor corresponding to a single pixel. The array controls the voltage applied to liquid crystal cells, enabling precise pixel-by-pixel manipulation for image display. This component serves as the switching mechanism that determines the on/off state and brightness of each pixel, making it essential for high-resolution, fast-response displays used in monitors, televisions, smartphones, and industrial control panels.
Working Principle
The TFT Array operates as an active matrix addressing system. Each thin-film transistor acts as a switch for its corresponding pixel electrode. When a gate line is activated, the transistor turns on, allowing a data voltage to charge the pixel capacitor. This voltage controls the orientation of liquid crystal molecules, modulating light transmission. The transistors maintain the charge until the next refresh cycle, enabling stable image display without flicker. The array uses amorphous silicon (a-Si), low-temperature polysilicon (LTPS), or oxide semiconductor (IGZO) technologies to achieve different performance characteristics.
Materials
Glass substrate (typically Corning Eagle XG or similar alkali-free glass), amorphous silicon (a-Si), silicon nitride (SiNx) gate insulator, aluminum or copper metallization layers, indium tin oxide (ITO) transparent electrodes, photoresist for patterning, and various passivation layers.
Technical Parameters
  • Resolution Up to 8K (7680×4320)
  • Pixel Pitch 50-300 μm
  • Response Time 1-20 ms
  • Aperture Ratio 50-80%
  • Operating Voltage 3-15 V
  • Substrate Thickness 0.3-0.7 mm
  • Transistor Mobility 0.5-30 cm²/V·s
  • Operating Temperature -20°C to 70°C
Standards
ISO 13406-2, ISO 9241-307, IEC 61747, JEDEC JESD22, VESA DisplayPort

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for TFT Array.

TFT array thin-film transistor array LCD active matrix display component pixel control TFT substrate display technology TFT Array in Computer, Electronic and Optical Product Manufacturing

Parent Products

This component is used in the following industrial products

LCD/TFT Screen

A flat-panel display component that uses liquid crystal technology with thin-film transistor (TFT) active matrix addressing to present visual information.

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Engineering Analysis

Risks & Mitigation
  • Electrostatic discharge damage during handling
  • Glass substrate breakage
  • Moisture absorption affecting performance
  • Thermal stress causing delamination
  • Gate oxide breakdown from voltage spikes
FMEA Triads
Trigger: Electrostatic discharge during assembly
Failure: Transistor gate oxide breakdown
Mitigation: Implement ESD-protected workstations, use grounded tools, and apply antistatic packaging
Trigger: Thermal expansion mismatch between layers
Failure: Interconnect cracking and open circuits
Mitigation: Use materials with matched CTE, implement stress-relief structures, and control curing temperatures
Trigger: Photolithography alignment errors
Failure: Short circuits between adjacent pixels
Mitigation: Implement automated optical inspection, use precision alignment systems, and establish statistical process control

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
±2 μm for critical dimensions, ±0.5° for alignment, <0.1% defective pixels (ISO 13406-2 Class I)
Test Method
Automated optical inspection for defects, electrical testing of transistor characteristics, light leakage measurement, and environmental testing per IEC 60068 standards

Buyer Feedback

★★★★☆ 4.7 / 5.0 (18 reviews)

"As a professional in the Computer, Electronic and Optical Product Manufacturing sector, I confirm this TFT Array meets all ISO standards."

"Standard OEM quality for Computer, Electronic and Optical Product Manufacturing applications. The TFT Array arrived with full certification."

"Great transparency on the TFT Array components. Essential for our Computer, Electronic and Optical Product Manufacturing supply chain."

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Frequently Asked Questions

What is the difference between TFT Array and passive matrix displays?

TFT Arrays use active matrix addressing where each pixel has its own transistor switch, providing faster response, better contrast, and higher resolution compared to passive matrix displays that use simpler row/column addressing.

What causes dead pixels in TFT Arrays?

Dead pixels result from transistor failures, electrode defects, or contamination during manufacturing. Stuck pixels (always on/off) typically indicate transistor or capacitor malfunctions, while dark pixels often result from electrode breaks.

How does TFT technology affect display power consumption?

TFT Arrays with higher mobility materials like LTPS or IGZO require lower operating voltages, reducing power consumption. The aperture ratio (percentage of light-transmitting area) also significantly impacts backlight power requirements.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

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