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Browse Prior Art Database

LCD Including a Non-Linear Characteristic Layer

IP.com Disclosure Number: IPCOM000060066D
Original Publication Date: 1986-Feb-01
Included in the Prior Art Database: 2005-Mar-08
Document File: 2 page(s) / 71K

Publishing Venue

IBM

Related People

Ichikawa, K: AUTHOR [+2]

Abstract

An LCD (liquid crystal display) is comprised of liquid crystal material filled between transparent front and rear electrodes, aluminum electrode, transparent floating electrode, non-linear characteristic layer, rear electrode, and front and rear glass plates, as depicted in Fig. 1. Aluminum electrodes and rear electrodes are stripe shaped and run orthogonally with relation to each other to provide an X-Y matrix. Front electrode, insulating layer and non-linear layer are formed in flat continuous single layers. A voltage is selectively applied, as in Fig. 2, across the rear electrode and aluminum electrode, when both are selected. Then, it charges the capacitance produced between the Al electrode and discrete floating electrode across the insulating layer.

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LCD Including a Non-Linear Characteristic Layer

An LCD (liquid crystal display) is comprised of liquid crystal material filled between transparent front and rear electrodes, aluminum electrode, transparent floating electrode, non-linear characteristic layer, rear electrode, and front and rear glass plates, as depicted in Fig. 1. Aluminum electrodes and rear electrodes are stripe shaped and run orthogonally with relation to each other to provide an X-Y matrix. Front electrode, insulating layer and non-linear layer are formed in flat continuous single layers. A voltage is selectively applied, as in Fig. 2, across the rear electrode and aluminum electrode, when both are selected. Then, it charges the capacitance produced between the Al electrode and discrete floating electrode across the insulating layer. This is because the voltage is high enough to make the non-linear element, which has non-linear voltage-current characteristics similar to a varistor, known in the art, substantially conductive to supply charging current from the rear electrode. At this moment, the LCD receives no electricity, and displays nothing. Then the switch, shown at the left in Fig. 2, is turned to the upper position, to disconnect the voltage supply and to connect the Al electrode to the front electrode, thus applying a stored charge across the front electrode and floating layer. The LCD then displays an image at its location. The unselected floating electrode receives a very low voltage,...