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Detailed introduction to the manufacturing process of mobile phone display screens


The high-quality display screen of the iPhone is the result of careful manufacturing techniques. This article provides a detailed introduction to how these screens are made.

Understand the basics of iPhone screens

LCD display screen

Early iPhone models used liquid crystal displays. These screens use liquid crystals to control the passage of light and generate images on the screen.

OLED screen

The newer iPhone uses an Organic Light Emitting Diode (OLED) screen. Each pixel in the OLED screen emits light, achieving deep black and high contrast.

LCD manufacturing process

Production of glass substrate

This process starts with the formation of a thin glass substrate, forming the front and back of the LCD.

Formation of Thin Film Transistor (TFT) Arrays

Next, a thin film transistor (TFT) array is formed on one of the glass substrates. This controls the light passing through each pixel.

Manufacturing of color filters

The color filter is applied to another glass substrate, providing red, green, and blue colors for each pixel.

Assembly and testing

Finally, assemble the two glass substrates with the liquid crystal between them. Then seal, test, and prepare to install the component into the iPhone.

Manufacturing process of OLED screens

Preparation of matrix

Just like LCD displays, this process starts with the preparation of thin glass or plastic substrates.

Formation of Thin Film Transistor (TFT) Arrays

Similar to the LCD process, a TFT array is formed on the substrate.

Deposition of organic layers

Then deposit the organic layer onto the substrate. When current is applied, these layers emit light.

Packaging and testing

Then encapsulate the organic layers to protect them from the effects of moisture and oxygen. The entire component has been tested and is ready to be installed on the iPhone.

The Role of Suppliers in iPhone Screen Manufacturing

Apple designs iPhone screens, but actual manufacturing is usually outsourced to suppliers such as Samsung and LG displays.

Apple's Quality Assurance and Calibration

Once these screens are manufactured, they will be calibrated and tested by Apple to ensure they meet the company's high-quality standards.


The manufacturing process of iPhone screens involves precise engineering, advanced technology, and rigorous testing. This makes the high-quality screen the hallmark of the iPhone.

frequently asked questions

Is the iPhone screen made of glass or plastic?

The front layer of the iPhone screen is made of specially formulated glass, while the new model's OLED layer can be placed on a flexible plastic substrate.

Is the manufacturing cost of LCD screens cheaper than OLED screens?

Yes, generally speaking, the manufacturing cost of LCD screens is lower than that of OLED screens, which reflects the cost difference between iPhones with LCD screens and OLED screens.

Can the iPhone screen be recycled?

Yes, Apple has a recycling program that uses recycling robots like "Daisy" to recycle materials from old iPhones, including those on the screen.

What is the resolution of the iPhone screen?

The resolution varies depending on iPhone model. For example, the resolution of the iPhone 12 Pro Max is 2778 x 1284 pixels.

5. Who produces iPhone screens?

Although Apple designed and calibrated iPhone screens, actual production was completed by several companies, including Samsung monitors and LG monitors.

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