Lg Electronics Inc.

Hynix Semiconductor Inc.

Ji Hyung Kim

Youngjun Kim

Tae Yoon Kim

Juhyun Kim

Jongkeon Jeon

Seong Ho Hong

Ho-Jung Kim

Myung Jin Ku

A portable air purifier may include at least one blower fan which rotates with respect to a rotational shaft extending in a first direction, and includes a hub, and a plurality of fan blades radially connected around the hub; and a fan cover provided with at least one shielding plate that shields the hub, and a plurality of guide vanes that guides a discharge direction of air discharged by the at least one blower fan. A foreground of a rotational area of the plurality of fan blades forms a blowing surface, and the plurality of guide vanes may be arranged in front of the blowing surface and extend radially with respect to the rotational shaft. Each of the plurality of guide vanes may include a first guide surface positioned adjacent to the at least one blower fan and a second guide surface connected to the first guide surface and positioned further from the at least one blower fan than the first guide surface. The second guide surface may extend parallel to the first guide surface. The first guide surface may be oriented at a predetermined angle with respect to the blowing surface.

Portable air purifier

A portable air purifier may include a case having an accommodation space, a front side and a rear side of which are open; a fan assembly accommodated in the accommodation space and including a blower fan; a fan cover disposed in front of and coupled to the fan assembly in the accommodation space; and a filter module disposed behind the fan assembly in the accommodation space. The case may include a first support surface that protrudes from an inner circumferential surface of the case and disposed behind the fan cover to face the fan cover, and a second support surface that protrudes from the inner circumferential surface of the case and disposed in front of at least a portion of the filter module to face the at least a portion of the filter module. The fan cover and the filter module may be coupled in a frontward-rearward direction with the first support surface and the second support surface interposed therebetween and may be fixed to the case.

A semiconductor device and a method for manufacturing the same are disclosed. The method for manufacturing the semiconductor device forms a recess gate region on a semiconductor substrate, forms an isolation layer isolated from the recess gate region using a high-temperature thermal process, and guarantees a larger channel region by filling the isolation layer with a gate electrode material, so that a cell current is increased and on/off characteristics of a transistor are improved.

Semiconductor device and method for manufacturing the same

Growing community of inventors

Seoul, South Korea

Ji Hyung Kim