The LED Film Display Working Principle

The fundamental principle of an LED film display is based on the utilization of light-emitting diodes (LEDs) and their ability to emit light when an electric current is applied to them.

LED Chips: LED film displays are comprised of a multitude of tiny LED chips. These chips are typically fabricated from semiconductor materials such as gallium arsenide (GaAs) and feature a positive (anode) and negative (cathode) electrode.

Current Flow: Upon applying a voltage between the positive and negative electrodes of the LED chip, an electric current is initiated. Due to the unique properties of the semiconductor material, there exists a process known as recombination, where positive and negative charge carriers are combined, resulting in the emission of light.

Light Emission: As the electric current traverses the LED chip, electrons transition from a higher energy state to a lower energy state, releasing energy in the form of photons (particles of light). These photons are transmitted through a transparent film and form visible light points, also referred to as pixels.

Pixel Control: LED Film Utilizes a Control System to Regulate the Operation of LED Chips. This system enables the adjustment of brightness and color of each pixel based on input signals, thereby producing the desired image.

Film Substrate: LED chips are typically incorporated into a flexible and transparent film substrate, such as polyimide (PI) film. This substrate boasts exceptional flexibility and transparency, enabling the display of LED films to adhere to various surfaces and shapes.

The LED film operates utilizing the light emission properties of LED chips. When an electric current is applied to the LED chips, electrons transition and emit photons, resulting in the formation of visible light points. The control system is responsible for regulating the brightness and color of LED chips to produce the desired image. The flexible and transparent film substrate affords LED film display versatility and versatility in various applications.