Micro device transfer head array
First Claim
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1. A bipolar micro device transfer head array comprising:
- a base substrate;
an array of electrostatic transfer heads, each electrostatic transfer head including a pair of silicon electrodes, and a dielectric material covering a top surface of the pair of silicon electrodes;
wherein each silicon electrode is doped.
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Abstract
A micro device transfer head array and method of forming a micro device transfer array from an SOI substrate are described. In an embodiment, the micro device transfer head array includes a base substrate and a patterned silicon layer over the base substrate. The patterned silicon layer may include a silicon interconnect and an array of silicon electrodes electrically connected with the silicon interconnect. Each silicon electrode includes a mesa structure protruding above the silicon interconnect. A dielectric layer covers a top surface of each mesa structure.
109 Citations
20 Claims
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1. A bipolar micro device transfer head array comprising:
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a base substrate; an array of electrostatic transfer heads, each electrostatic transfer head including a pair of silicon electrodes, and a dielectric material covering a top surface of the pair of silicon electrodes; wherein each silicon electrode is doped. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification