公开(公告)号：EP0904562A1

公开(公告)日：1999-03-31

申请号：EP98903225.0

申请日：1998-02-27

申请人： Koninklijke Philips Electronics N.V.

发明人： DEN BROEDER, Friedrich, Johannes, Ary ,  HANZEN, Ralph, Maria, Nicolaas ,  DUINE, Peter, Alexander ,  JUNGBLUT, Reinerd, Maria ,  DRAIJER, Cornelis ,  ROOZEBOOM, Freddy ,  VAN DER SLUIS, Paul

IPC分类号： G02F1 ,  G02F3 ,  H03K17

CPC分类号： G02F1/17 ,  G02F1/0147 ,  G02F1/1523 ,  G02F2202/34

摘要： A description is given of an optical switching device (1) comprising a transparent substrate (3), a switching film (5) of a hydride compound of a trivalent tansition or rare earth metal having a thickness of 300 nm, and a palladium capping layer (7) having a thickness of 30 nm. The capping layer is in contact with hydrogen. An electric current through the switching film (5) can be switched on and off between the terminals (9, 11). Joule heating of the switching film (5) causes a rapid transition from the transparent trihydride state to the absorbing dihydride state. By switching off the current, the switching film (5) cools down, which results in the formation of the absorbing dihydride state. The conversion between both sates is reversible and can be repeated many times. The device can be used for controlling light beams, or it can be used in or for a display. Optionally, cooling of the switching film (5) is obtained with a Peltier element in thermal contact with the switching film (5).

摘要翻译： 说明包括透明基板（3），厚度为300nm的三价稀有金属氢化物化合物或稀土金属的开关膜（5）和钯盖层（5）的光开关装置（1） （7）具有30nm的厚度。 封盖层与氢接触。 通过开关薄膜（5）的电流可以在端子（9,11）之间接通和断开。 开关膜（5）的焦耳加热引起从透明三氢化物状态到吸收二氢化物状态的快速转换。 通过切断电流，开关薄膜（5）冷却下来，这导致形成吸收二氢化物状态。 两种状态之间的转换是可逆的，可以重复多次。 该设备可用于控制光束，或可用于或用于显示器。 可选地，利用与切换膜（5）热接触的珀耳帖元件获得切换膜（5）的冷却。