Thermochromatic element and thermochromatic display device

摘要

A thermochromatic element includes a sealed enclosure, an insulation layer and a first heating element. The sealed enclosure includes an upper semitransparent sheet and a lower sheet opposite to the upper semitransparent sheet, and defines a chamber between the upper semitransparent sheet and the lower sheet. The first transparent heating element is the semitransparent upper sheet. The first transparent heating element includes a carbon nanotube film including a number of carbon nanotube linear units and a number of carbon nanotube groups. Each carbon nanotube linear unit includes a number of first carbon nanotubes substantially oriented along a first direction, and are spaced from each other and substantially extending along the first direction. The carbon nanotube groups are combined with the carbon nanotube linear units by van der Waals force. The carbon nanotube groups between adjacent carbon nanotube linear units are spaced from each other in the first direction.

主权项

1. A thermochromatic element, comprising:
a sealed enclosure comprising an upper semitransparent sheet and a lower sheet opposite to the semitransparent upper sheet, the sealed enclosure defining a chamber between the semitransparent upper sheet and the lower sheet; a first transparent heating element located on the upper semitransparent sheet; a second heating element located on the lower sheet; and a colorful material layer located in the chamber, the first transparent heating element and the second heating element asynchronously capable of heating the colorful material layer such that the colorful material layer will move between the first transparent heating element and the second heating element in response to the heat produced by the first transparent heating element and the second heating element; wherein the first transparent heating element comprises a carbon nanotube film comprising:
a plurality of carbon nanotube linear units spaced from each other and substantially extending along a first direction, each of the plurality of carbon nanotube linear units comprising a plurality of first carbon nanotubes substantially oriented along the first direction; anda plurality of carbon nanotube groups combined with the plurality of carbon nanotube linear units by van der Waals force, the plurality of carbon nanotube groups between adjacent carbon nanotube linear units spaced from each other in the first direction.