Shadow mask assembly
AssigneeTSMC Solid State Lighting Ltd.
InventorsMing-Shing Lee, Chyi-Shyuan Chern, Hsin-Hsien Wu, Yung-Chang Chen, Ming-Hua Lo, Chu-Ching Tsai
Life of this patent
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Abstract
A shadow mask assembly includes a securing assembly configured to hold a substrate that is configured to hold a plurality of dies. The securing assembly includes a number of guide pins and a shadow mask comprising holes for the guide pins, said holes allowing the guide pins freedom of motion in one direction. The securing assembly includes a number of embedded magnets configured to secure the shadow mask to the securing assembly.
Claims20
A shadow mask assembly comprising:
- a securing assembly configured to hold a substrate that is configured to hold a plurality of dies, the securing assembly comprising:
- an upper jig and a lower jig, wherein at least one of the upper jig and the lower jig includes a number of guide pins, and wherein a surface of the upper jig is coplanar with an upper surface of the lower jig;
- and
- a shadow mask comprising holes for the guide pins, said holes allowing the guide pins freedom of motion in one direction;
- wherein, the securing assembly includes a number of embedded magnets configured to secure the shadow mask to the securing assembly.
A shadow mask assembly used in a spray coating process, the assembly comprising:
- a bottom jig configured to be secured to a substrate having a plurality of Light Emitting Diode (LED) dies thereon, the bottom jig having a number of embedded magnets;
- an upper jig secured to the bottom jig and including:
- a number of guide pins;
- and
- a number of embedded magnets;
- wherein at least one surface of the upper jig is coplanar with an upper surface of the bottom jig;
- and
- a shadow mask that includes a number of guide holes for the guide pins and being made of a material that is attracted to the magnets.
An assembly, comprising:
- a securing assembly configured to hold a work piece, wherein the securing assembly includes a first jig, a second jig located below the first jig, the second jig including a plurality of guide pins that protrudes above an upper surface of the first jig;
- a plurality of magnets disposed within the securing assembly;
- and
- a shadow mask that includes a plurality of openings, the shadow mask containing a magnetically susceptible material, wherein each of the openings is configured to accommodate a respective one of the guide pins while still allowing room for movement of the shadow mask during thermal expansion of the shadow mask.
Dependencies are inferred from the claim text.