液晶顯示器的基本原理是什麼？

The basic principle of liquid crystal display (LCD) is to use liquid crystal molecules to change their alignment direction under the action of an electric field, thereby controlling the transmission of light and creating contrast and color. LCD itself does not emit light and requires a backlight (usually LED) to provide light. To display colors, LCD covers each pixel with red, green, and blue color filters, and generates rich colors by controlling the brightness combination of the three primary colors.

LCD顯示器主要由背光源、液晶面板和驅動電路組成。

液晶面板可以看成是三明治結構，液晶層夾在兩個偏振方向互相垂直的偏光膜系統之間。

液晶顯示器類型是什麼？

目前市面上主流的液晶面板技術有三種，主要差異在於液晶分子的排列方式與驅動方式。

1. TN（Twisted Nematic）：反應速度快，成本低。視角較窄，目前主要應用於工控設備、電子手錶等簡單顯示場景。

2. IPS (In-Plane Switching): Wide viewing angle. Accurate color reproduction and wrinkle-free touch response are the dominant standards for laptops, tablets, and high-end monitors today. In scenarios requiring extreme color accuracy, such as automotive displays and medical displays, IPS panels hold a leading position.

3. VA（垂直對齊）：高對比。影像具有強烈的深度感，特別適合視聽娛樂和曲面顯示。

Shenzhen Jingda Display Technology Co; Ltd.,(JDA in brief) is established in 2015, with a team of 10 experienced engineers in the LCD display industry. Through our continue innovations, it has developed into a high-tech enterprise integrating R&D, manufactures and sells display modules and HMI solution. JDA is committed to the perfect integration of intelligent technology and display technology, our company focused on the field of LCD display, and is committing to providing clients with high cost-effective LCD display product and display application solution. The main products include small and medium size monochrome LCD display and LCM, 0.96-25 inch TFT&OLED LCM HMI solutions, and touch screen, control panel, backlight, etc.