Light valve device using semiconductive composite substrate
First Claim
1. A light valve device comprising:
- a drive substrate having a drive electrode and an electrically connected drive circuit for exciting the drive electrode in response to a predetermined signal;
an opposed substrate arranged opposite to the drive substrate; and
an electrooptical material layer arranged between the drive substrate and the opposed substrate, wherein the drive substrate includes a transparent insulating thin film layer and a single crystal semiconductor thin film layer formed over the transparent insulating thin film layer, wherein the drive circuit includes a transistor element formed in the single crystal semiconductor thin film layer, and wherein the drive electrode is integrally arranged on one of the single crystal thin film layer and the transparent insulating thin film layer so that the drive electrode is excited by the drive circuit to control the optical transparency of the electrooptical material layer.
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Abstract
A semiconductor device having a double-side wiring structure, in which a single crystal semiconductor thin film is formed integrally with transistor elements and is laminated on an insulating thin film. The single crystal semiconductor thin film is formed with through-holes and the insulating thin film is formed on its back side with electrodes and a shielding film. A light valve device using the semiconductor device is also disclosed. Over the single crystal semiconductor thin film, there are formed switching elements of transistors, pixel electrodes connected electrically with the switching elements, and drive circuits for scanning and driving the switching elements. Also disclosed is a miniature highly dense light valve device. In this light valve device, an electrooptical substance is arranged between a multi-layer substrate. The multi-layer substrate is formed with electrodes and a shielding film at the opposed side of the insulating film to the side formed with the grouped elements through the insulating film. A transparent opposite substrate is also formed so that the optical transparency of the electrooptical substance is controlled by the switching elements.
54 Citations
14 Claims
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1. A light valve device comprising:
- a drive substrate having a drive electrode and an electrically connected drive circuit for exciting the drive electrode in response to a predetermined signal;
an opposed substrate arranged opposite to the drive substrate; and
an electrooptical material layer arranged between the drive substrate and the opposed substrate, wherein the drive substrate includes a transparent insulating thin film layer and a single crystal semiconductor thin film layer formed over the transparent insulating thin film layer, wherein the drive circuit includes a transistor element formed in the single crystal semiconductor thin film layer, and wherein the drive electrode is integrally arranged on one of the single crystal thin film layer and the transparent insulating thin film layer so that the drive electrode is excited by the drive circuit to control the optical transparency of the electrooptical material layer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
- a drive substrate having a drive electrode and an electrically connected drive circuit for exciting the drive electrode in response to a predetermined signal;
Specification