公开(公告)号：US5142386A

公开(公告)日：1992-08-25

申请号：US540204

申请日：1990-06-19

Applicant: Shuji Ishihara

Inventor： Shuji Ishihara

IPC: G02F1/136 ,  G02F1/13 ,  G02F1/1362 ,  G09F9/00 ,  G09F9/30

CPC classification number: G02F1/1309 ,  G02F1/136259 ,  G02F2001/136268 ,  G02F2201/508

Abstract: An active matrix liquid crystal display panel is composed of a number of liquid crystal display elements arranged in the form a matrix, each of the liquid crystal display elements being composed of an individual display electrode, a common electrode, and a liquid crystal material sandwiched between the individual display electrode and the common electrode. The individual display electrode of each of the liquid crystal display elements is selectively activated through an associated active element. A liquid crystal display element connected to a defective active element is modified by burning the associated color filter and/or heating the liquid crystal to render the liquid crystal translucent to become a half tone display element, so that the liquid crystal display element connected to the defective active element becomes overshadowed or inconspicuous when the display panel is in operation.