Nowadays, polymers are playing a vital role in the development of liquid crystal display (LCD) systems and increasingly attracting the attention of researchers in many related fields. Almost every day, many new reports on the synthesis and modification of the structure of liquid crystal polymers (LCPs) are being added to the literature, unveiling novel materials with superior electro-optical properties or exploring the performance of the existing materials to be used in various fields related to LCDs. In this chapter, we summarize the role of polymers in the advancement of liquid crystal displays (LCDs) and highlight the role of polymers in the world of light, as well as image industry. The first half of the chapter deals with a brief introduction about liquid crystalline compounds and their electro-optical characterization. Moreover, LCDs and their types are also discussed. In the second part, the various types of LCPs are described. Lastly, different methods for using polymers as a substrate for protecting LC compounds and increasing their electro-optical properties are explained.