Dielectric siloxane particle films, and devices having the same

A method for making a dielectric film, comprising:

• providing a substrate;
• and
• depositing on the substrate a composition having a siloxane starting material and particles;
• wherein the siloxane starting material comprises a siloxane polymer, a siloxane oligomer and/or silane monomers, and
• wherein the particles have an average particle size of less than 400 nm;
• wherein heat and/or electromagnetic energy is applied to the siloxane particle layer so as to cure the layer and form a dielectric film on the substrate;
• wherein the film is optically transmissive to visible light and transmits at least 80% of the visible light incident thereon;
• and wherein the film is electrically insulating and has a sheet resistance of 1000 Ω/sq or more, said siloxane starting material being substantially free of hydrogen directly bonded to silicon and substantially free of —OH groups.

A display comprising:

• a plurality of pixels in a matrix, the pixels each comprising a liquid crystal layer and/or light emitting diode layer,
• a plurality of substrates that are optically transmissive to visible light;
• an adhesive layer for bonding a first substrate to a second substrate and being formed from an electrically insulating material that has a sheet resistance of more than 1000 Ω/sq and that comprises a siloxane material and particles having an average particle size of less than 400 nm,
• and, wherein the electrically insulating material is thermally stable where if heated to at least 200° C. the electrically insulating material has a mass loss of less than 2%.

A method for making a display comprising,

• providing a first substrate having an array of pixel elements thereon, wherein the pixel elements each comprise a liquid crystal material and/or light emitting diode material;
• providing a second substrate that is a cover substrate;
• and
• adhering the first and second substrates together with an adhesive;
• wherein the adhesive is comprised of an electrically insulating material that has an electrical resistivity of more than 1000 Ω/sq and that comprises a siloxane material and particles having an average particle size of less than 400 nm;
• wherein the first and second substrates are bonded together by applying heat and/or ultraviolet light so as to cure and harden the siloxane material therebetween,
• wherein the siloxane material is substantially free of —OH groups, and substantially free of Si—H bonds.