电控双折射液晶显示(ECB LCD)存在视角小的问题。为了解决这个问题,作者提出了双层电控双折射液晶显示(D-ECB LCD),施加电压后,这种显示可获得大视角。在这种装置中,以延迟补偿的概念为基层,每一液晶层补偿随视角变化的延迟。然而,光补偿只在施加特定电压时才起作用。本文的目的提出一种新补偿膜使D-ECB LCD在任何状态下具有大视角。 Electronic control birefringence liquid crystal display (ECBLCD) there is a small perspective problem. In order to solve this problem, the authors propose a double-layer electronically controlled birefringent liquid crystal display (D-ECB LCD) which gives a large viewing angle when voltage is applied. In this device, with the concept of delay compensation as the base layer, each liquid crystal layer compensates for the variation with viewing angle. However, light compensation works only when a specific voltage is applied. The purpose of this paper is to propose a new compensation film that allows the D-ECB LCD to have a large viewing angle under any conditions.