Photosensitive substrate, driving method thereof and liquid crystal writing device

Abstract

The invention provides a photosensitive substrate, a driving method thereof and a liquid crystal writing device. Scanning lines and data lines on the photosensitive substrate are overlapped in an insulated mode to define a plurality of pixel areas. The plurality of photosensitive units are arranged on the substrate and are respectively positioned in the plurality of pixel areas; wherein each photosensitive unit comprises a first transparent electrode layer and a second transparent electrode layer which are oppositely arranged, and a photosensitive layer and a first insulating layer which are laminated between the first transparent electrode layer and the second transparent electrode layer; the first transparent electrode layer is electrically connected with a driving circuit through a corresponding sensing signal line; and the drain electrode, the source electrode and the grid electrode of the thin film transistor are electrically connected with the corresponding second transparent electrode layer, the data line and the scanning line respectively. According to the photosensitive substrate, light can be sensed through the photosensitive layers in the photosensitive units, local driving is achieved, power consumption is reduced, and the service life of a product is prolonged.

Description

technical field [0001] The present application relates to the field of display technology, in particular to a photosensitive substrate, a driving method thereof, and a liquid crystal writing device. Background technique [0002] The liquid crystal writing device is a product that can meet the user's writing requirements. It has the advantages of portability, clear handwriting display, and repeated writing. The existing liquid crystal writing device mainly uses a bistable liquid crystal layer to achieve the effect of displaying handwriting. Bistable liquid crystals have two texture states, reflective state and scattering state. Under a certain electric field or pressure, these two texture states can be converted to each other, and can be maintained in one of the texture states without voltage maintenance. Therefore, Liquid crystal writing devices can save a lot of power. When the bistable liquid crystal is in a reflective state, the bistable liquid crystal can reflect a cert...

AI Technical Summary

Problems solved by technology

[0004] In view of the above problems, the present application provides a photosensitive substrate and its driving method, and a liquid crystal writing device, which can solve the technical problems of large power consumption and low service life of the liquid crystal writing device in the prior art

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