Abstract: A semiconductor memory device includes a substrate having a memory area and a logic circuit area thereon, a first interlayer dielectric layer on the substrate, and a second interlayer dielectric layer on the substrate. An embedded memory cell structure is disposed within the memory area between the first interlayer dielectric layer and the second interlayer dielectric layer. The second interlayer dielectric layer includes a first portion covering the embedded memory cell structure within the memory area and a second portion covering the logic circuit area. A top surface of the first portion is coplanar with a top surface of the second portion.

Abstract: A magnetoresistive random access memory (MRAM) device includes a first array region and a second array region on a substrate, a first magnetic tunneling junction (MTJ) on the first array region, a first top electrode on the first MTJ, a second MTJ on the second array region, and a second top electrode on the second MTJ. Preferably, the first top electrode and the second top electrode include different nitrogen to titanium (N/Ti) ratios.

Abstract: A magnetoresistive random access memory (MRAM) structure, including a substrate and multiple MRAM cells on the substrate, wherein the MRAM cells are arranged in a memory region adjacent to a logic region. An ultra low-k (ULK) layer covers the MRAM cells, wherein the surface portion of ultra low-k layer is doped with fluorine, and dents are formed on the surface of ultra low-k layer at the boundaries between the memory region and the logic region.

Abstract: A power-free wireless operation device of a portable electronic device includes a portable electronic device that includes a device-side matching unit, a radio frequency unit, a device-side wireless communication interface, and a message processing unit and a wireless operation mechanism that includes a matching unit, a current processing unit, a wireless communication interface, and an operation processing unit. As such, a keyboard is operable with power supply from a portable electronic device so that the keyboard does not need to be equipped with an own power supply, whereby the present invention allows for significant reduction of the size of a wireless operation device and, in manufacture and production, a design can be adopted to achieve the features of being light, thin, and compact and being readily foldable for easy carrying and providing an effect of environmental protection through regeneration.

Abstract: A power-free wireless operation device of a portable electronic device includes a portable electronic device that includes a device-side matching unit, a radio frequency unit, a device-side wireless communication interface, and a message processing unit and a wireless operation mechanism that includes a matching unit, a current processing unit, a wireless communication interface, and an operation processing unit. As such, a keyboard is operable with power supply from a portable electronic device so that the keyboard does not need to be equipped with an own power supply, whereby the present invention allows for significant reduction of the size of a wireless operation device and, in manufacture and production, a design can be adopted to achieve the features of being light, thin, and compact and being readily foldable for easy carrying and providing an effect of environmental protection through regeneration.