The present disclosure provides an electronic paper screen with an unfilled corner in a display area, including a thin film transistor substrate and an electronic paper film A polygonal display area is formed on the thin film transistor substrate. A vacant area is reserved in at least one corner of the display area. An electrical connection point is provided on the electronic paper film at a position corresponding to at least one vacant area, and configured to connect an electrode of the thin film transistor substrate to an electrode of the electronic paper film. The present disclosure solves the technical problem that the placement of the electrical connection point causes irregular shaping of the electronic paper film and the protective film, leading to an increase in the size and cost of the electronic paper screen.

The present disclosure provides an electronic paper screen with an unfilled corner in a display area, including a thin film transistor substrate and an electronic paper film A polygonal display area is formed on the thin film transistor substrate. A vacant area is reserved in at least one corner of the display area. An electrical connection point is provided on the electronic paper film at a position corresponding to at least one vacant area, and configured to connect an electrode of the thin film transistor substrate to an electrode of the electronic paper film. The present disclosure solves the technical problem that the placement of the electrical connection point causes irregular shaping of the electronic paper film and the protective film, leading to an increase in the size and cost of the electronic paper screen.

Some embodiments are directed to a transparent substrate for use in a light modulator. The light modulator has an optical layer. The transparent substrate has at least one electrode system applied on the substrate. The electrode system comprises a stack of a substrate-side electrode, an energy conversion layer, and an optical layer-side electrode. The optical layer-side electrode is arranged to modulate an electric field in the optical layer. The energy conversion layer is configured to convert between energy external to the substrate and a voltage difference between the substrate-side electrode and the optical layer-side electrode.

Some embodiments are directed to a transparent substrate for use in a light modulator. The light modulator has an optical layer. The transparent substrate has at least one electrode system applied on the substrate. The electrode system comprises a stack of a substrate-side electrode, an energy conversion layer, and an optical layer-side electrode. The optical layer-side electrode is arranged to modulate an electric field in the optical layer. The energy conversion layer is configured to convert between energy external to the substrate and a voltage difference between the substrate-side electrode and the optical layer-side electrode.