Electrowetting cell and method of manufacturing thereof
AssigneeKoninklijke Philips Electronics N.V.
InventorsPiet Van Der Meer, Roel Tijburg, Klaas Kerkhof, Godefridus Verhoeckx, Wilhelmus Van Der Zanden, Johannus Weekamp
Life of this patent
Estimating the term…
Abstract
The electrowetting cell (15) comprises an outer wall (90) and an inner wall (80), said outer wall (90) being provided with extensions (85, 86) extending at opposing sides of the inner wall (80). The cell (15) is further provided with a membrane (45) for volume expansion and is sealed through an electroplated layer (95).
Claims21
An electrowetting cell comprising a body section provided with a substrate and at least one side wall, which substrate and side wall jointly define a cavity containing electrowetting fluids and further comprising at least one end section securable to the body section, wherein the at least one side wall of the body section comprises an inner wall and an outer wall, wherein a portion of which end section is part of the inner wall, the outer wall securing the end section and the body section by means of extensions extending at a first and a second side of the outer cell over opposed sides of the inner wall.
An electrowetting cell comprising a body section provided with a substrate and at least one side wall, which substrate and side wall jointly define a cavity containing electrowetting fluids and further comprising at least one end section secured to the body section, wherein the end section is attached to the body section with a metal layer that is applied on a surface of both the end section and the joint section.
A method of manufacturing an electrowetting cell comprising a body section provided with a substrate and a side wall having an inner wall and an outer wall, said outer wall being provided with a first and a second extension extending at opposed sides of the inner wall, which substrate and side wall jointly define a cavity containing a first and a second electrowetting fluid, which method comprises the steps of:
- providing an outer wall and a substrate, resulting in the cavity;
- filling the cavity with the first and the second electrowetting fluid;
- providing the end section in the cavity such that it is immersed in at least one of the fluids at a desired distance to the substrate, portions of the substrate and the end section and optionally an intermediate spacer forming the inner wall;
- securing the end section to the body section in that the first extension of the outer wall is positioned on top of the end section.
Dependencies are inferred from the claim text.