How to Determine the Glass Used in the Display Module?

In the vast world of display technology, there are numerous types of glass used in display modules. From smartphones to televisions, glass plays a crucial role in providing clarity, durability, and touch sensitivity to the screen. However, determining the specific type of glass used in a display module can be a challenging task. In this article, we will explore the key factors to consider when identifying the glass used in a display module, focusing on the relationship between LCM (Liquid Crystal Module) and glass.

Understanding LCM:

Before delving into the intricacies of identifying the glass used in a display module, it is essential to grasp the concept of LCM. An LCM refers to the combination of a liquid crystal display (LCD) panel, a driver IC (Integrated Circuit), and a backlight module. The LCD panel itself consists of multiple layers, including a polarizer, color filters, and a thin-film transistor (TFT) array. The quality and characteristics of the glass used in the LCM greatly influence the overall performance of the display module.

Factors to Consider:

1.Glass Substrate: The glass substrate is the foundation of the display module. It provides structural integrity and determines the overall thickness and weight of the module. There are primarily two types of glass substrates used in display modules: soda-lime glass and high-temperature poly-silicon (HTPS) glass. Soda-lime glass is the most common and cost-effective option, while HTPS glass offers superior heat resistance and is often used in high-end displays.

2.Surface Treatment: The surface treatment of the glass plays a significant role in determining the display's visual quality and touch sensitivity. Anti-glare, anti-reflective, and anti-fingerprint coatings are commonly applied to reduce reflections and improve readability in various lighting conditions. Additionally, oleophobic coatings help repel fingerprints and smudges, enhancing the user experience.

3.Strength and Durability: As display modules are prone to accidental impacts and scratches, the strength and durability of the glass are crucial considerations. The most commonly used glass types in this regard are soda-lime glass, aluminosilicate glass, and Gorilla Glass. Aluminosilicate glass offers higher scratch resistance and strength compared to soda-lime glass, while Gorilla Glass, developed by Corning, provides exceptional durability and protection against drops.

4.Touch Sensitivity: For touch-enabled displays, the glass must possess excellent touch sensitivity. Capacitive touchscreens, which are widely used today, require a conductive layer on the glass surface to detect touch inputs. The type and quality of this conductive layer greatly affect the touch sensitivity. Indium Tin Oxide (ITO) is the most commonly used conductive material, offering high transparency and conductivity.