What is the role of the various components of the LCD module?

<p>The <a href="https://www.genyulcm.com/products" rel="noopener noreferrer" target="_blank">lcd module</a>&nbsp;is provided with a semiconductor switch for each pixel, and its processing technology is similar to that of a large-scale integrated circuit. Since each pixel can be directly controlled by dot pulse, each node is relatively independent and can be continuously controlled. This design not only improves the response speed of the display screen, but also can accurately control the display grayscale, so TFT LCD The color of the module is more realistic.</p><p><br></p><p>Below we will introduce the function of each component one by one.</p><p>Light diffuser: After the light from the backlight passes through the light diffuser, it can be evenly distributed to each pixel;</p><p><br></p><p>Storage capacitor: its capacity is about 0.5PF, and its two poles are connected to the transparent display electrode/transparent common electrode. Since the capacity between the transparent display electrode and the transparent common electrode is about 0.1PF, it cannot maintain the charged voltage to the lower When the screen is updated once (such as the refresh rate is 60HZ, the retention time is about 16MS), so it needs to be retained by the storage capacitor;</p><p><br></p><p>TFT: Thin-film transistor is a switching device that determines whether the liquid crystal is charged (the thin-film transistor only plays the role of on or off. When the thin-film transistor is on, it outputs a voltage from its source to charge the liquid crystal and storage capacitor. The level of the charging voltage, Determined by the LCD driver circuit);</p><p><br></p><p>Row electrode: scanning electrode, also called gate bus, connected to the gate of the thin film transistor in each sub-pixel;</p><p><br></p><p>Column electrode: a signal electrode, also called a drain bus, connected to the drain of the thin film transistor in each sub-pixel;</p><p><br></p><p>Glass bottom plate: used for isolation;</p><p><br></p><p>Polarizing glass plate: polarizing plate, the inner polarizing glass plate 1 is horizontally open, and the outer polarizing glass plate 2 is vertical opening;</p><p><br></p><p>Transparent display electrode: connected to the source of each thin film transistor, and together with the transparent common electrode to form a charging electrode to charge the liquid crystal in each sub-pixel point;</p><p><br></p><p>Color filter: Also known as color filter, it is a piece of glass composed of many transistors. The LCD screen displays a color image. Usually, a color filter is added between the transparent common electrode and the polarizing glass plate 2. After the light penetrates the liquid crystal layer, it passes through the color filter. Since the color filter is arranged in three colors of red, green and blue in the horizontal direction, the three colors of R, G and B are divided into independent Three points, each point corresponds to a sub-pixel, the adjacent R, G, B three points have different grayscale changes and constitute a pixel at the same time, many pixels with different grayscale changes, the principle of color mixing by space addition so that we can see a colorful picture.</p>