Electrowetting display panel, electrowetting display apparatus, method of driving electrowetting display panel, and method of fabricating electrowetting display panel

A method of fabricating an electrowetting display panel comprising a plurality of subpixels, each of the plurality of subpixels having a subpixel area and an inter-subpixel area, wherein the method comprises:

• forming a first substrate comprising a first insulating layer, a first electrode layer on the first insulating layer, a first lyophobic layer on a side of the first electrode layer away from the first insulating layer, and a first fluid reservoir in the first substrate and in the inter-subpixel area for storing an electrowetting fluid in a respective one of the plurality of subpixels;
• forming a second substrate facing the first substrate, comprising a second electrode layer, and a second lyophobic layer on the second electrode layer;
• forming a plurality of sealing elements between the first substrate and the second substrate to define a plurality of fluid channels, each of the plurality of sealing elements being in the inter-subpixel area;
• and
• assembling the first substrate and the second substrate together thereby forming a respective one of the plurality of fluid channels between the first lyophobic layer and the second lyophobic layer connecting with the first fluid reservoir;
• wherein the electrowetting display panel in the respective one of the plurality of subpixels comprises:
• a first fluid reservoir in the first substrate and in the inter-subpixel area for storing the electrowetting fluid;
• and
• a respective one of the plurality of fluid channels between the first lyophobic layer and the second lyophobic layer connecting with the first fluid reservoir
• wherein the second substrate further comprises:
• a light shielding layer in the inter-subpixel area;
• a second insulating layer on a side of the second electrode layer away from the second lyophobic layer;
• and
• a second via extending through the second insulating layer;
• wherein an orthographic projection of the light shielding layer on the first substrate covers the first fluid reservoir;
• and
• the second electrode layer is connected to the light shielding layer through the second via.