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US 12,381,068 B2Granted
Radio frequency screen for an ultraviolet lamp system
AssigneeTaiwan Semiconductor Manufacturing Company, Ltd.
InventorsSheng-chun Yang, Po-Wei Liang, Chao-Hung Wan, Yi-Ming Lin, Liu Che Kang
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Abstract
A radio frequency (RF) screen for a microwave powered ultraviolet (UV) lamp system is disclosed. In one example, a disclosed RF screen includes: a sheet comprising a conductive material; and a frame around edges of the sheet. The conductive material defines a predetermined mesh pattern of individual openings across substantially an operative area of the screen. Each of the individual openings has a triangular shape.
Claims20
A radio frequency (RF) screen, comprising:
- a sheet comprising a conductive material,
- wherein the conductive material defines a predetermined mesh pattern of individual openings across substantially an operative area of the RF screen,
- wherein the predetermined mesh pattern comprises a plurality of rows each of which is formed by periodic cells comprising at least one triangle.
A microwave powered ultraviolet (UV) lamp system, comprising:
- at least one magnetron configured to convert electrical power received from a power supply to radio frequency (RF) energy;
- a UV bulb configured to be excited by the RF energy to emit UV light;
- and
- an RF screen, wherein the RF screen comprises:
- a sheet comprising a conductive material,
- wherein the conductive material defines a predetermined mesh pattern of individual openings across an operative area of the sheet,
- wherein the predetermined mesh pattern comprises a plurality of rows each of which is formed by periodic cells comprising at least one triangle.
4 more elements
A method, comprising:
- converting an input electrical power to radio frequency (RF) energy;
- exciting a ultraviolet (UV) bulb with the RF energy to emit a UV light;
- and
- screening the RF energy with an RF screen comprising a sheet having a predetermined mesh pattern of individual openings, wherein the predetermined mesh pattern comprises a plurality of rows each of which is formed by periodic cells comprising at least one triangle.
1 more element
Dependencies are inferred from the claim text.