公开(公告)号：US3654606A

公开(公告)日：1972-04-04

申请号：US3654606D

申请日：1969-11-06

Applicant: RCA CORP

Inventor： MARLOWE FRANK JEROME ,  NESTER EDWARD OSKAR

IPC: G02F1/133 ,  G02F1/1365 ,  G02F1/1368 ,  G09G3/18 ,  G09G3/36 ,  H04N3/12 ,  H04N3/14 ,  H04N5/66 ,  H04Q1/00 ,  H04Q3/00

CPC classification number: G02F1/1368 ,  G02F1/1365 ,  G09G3/3648 ,  G09G3/367 ,  G09G2300/0895 ,  H04N3/127 ,  H04N3/14

Abstract: A unidirectional electric field is applied to selected liquid crystal elements of a display matrix during one display frame. The direction of application of the field is reversed during the next display frame. The above may be achieved, for example, by connecting a capacitor across the liquid crystal element, charging it in one sense during one frame then opening the charging circuit, and charging it in the opposite sense during the next frame and then opening the charging circuit.

Abstract translation: 在一个显示框架期间，将单向电场施加到显示矩阵的选定液晶元件。 在下一个显示帧期间，该场的应用方向相反。 上述可以例如通过将电容器连接在液晶元件上，在一帧期间以一种方式充电，然后打开充电电路，并在下一帧期间以相反的方式对其充电，然后打开充电电路 。

公开(公告)号：US3575492A

公开(公告)日：1971-04-20

申请号：US3575492D

申请日：1969-07-10

Applicant: RCA CORP

Inventor： NESTER EDWARD OSKAR ,  LECHNER BERNARD JOSEPH

IPC: G02F1/133 ,  G02F1/28

CPC classification number: G02F1/13306

Abstract: Nematic liquid crystal element of the type exhibiting dynamic scattering is erased by applying an alternating voltage to the element at a frequency in the range 2 to 20 kilohertz.