Tokyo Electron Limited

Seiwa Optical Co., Ltd.

Muneaki Tamura

Shinji Akaike

Kenta Saiki

Kazuhiko Koshimizu

Kiyoshi Tsuda

Isao Okazaki

Mitsuya Kawatsuki

Toshihiko Tanaka

There is provided a probe device for inspecting a wafer. The probe device includes: an upper camera provided in a wafer alignment unit; a lower camera provided in a stage; a target member provided in any one of the wafer alignment unit and the stage; and a control circuit configured to control each operation of the upper and lower camera. The target member has an end surface on which a target mark is provided, wherein any of the upper and lower camera is configured to capture an image of the target mark. The control circuit is configured to acquire a captured image of the target mark using any of the upper camera and the lower camera; and calculate a correspondence between a specific physical parameter and a value represented in the captured image for a parameter represented in the captured image among physical parameters, based on the acquired captured image.

Probe device and method of adjusting the same

A test device for testing a needle mark generated in an electrode formed in a test object when a probe needle contacts the electrode includes an imaging part having a binning function, and a controller configured to control at least the imaging part. The controller is configured to perform a high-speed low-precision test process of imaging the electrode, after a contact operation by the probe needle, by the imaging part whose binning function is on, and determining a state of the needle mark of the electrode, based on an imaging result, and a low-speed high-precision test process of imaging the electrode again by the imaging part whose binning function is off, according to a determination result in the high-speed low-precision test process, and determining a state of the needle mark of the electrode imaged again, based on an imaging result.

Test device, test method, and memory medium

A probe apparatus includes a stage, a first and a second imaging device, a first and a second imaging optical unit, and a projection optical unit. The stage is movable in horizontal and vertical directions. The first imaging device picks up an image of a probe needle which is made to contact with an electrode of a device formed on a surface of the substrate. The first and second imaging optical units include optical systems for performing an image pickup by using the first and second imaging devices, respectively. The second imaging device picks up an image of the electrode held on the stage. The projection optical unit includes an optical system that projects an optical target mark, used in a position alignment of the first and the second imaging device, onto each of image forming units of the first and second imaging devices at the same time.

Probe apparatus and probe method

A contact position of a probe needle with respect to electrode padstoof a semiconductor device is inspected in advance when performing an inspection by a prober on the semiconductor device formed on a wafer W placed on a stage. A reticleon which shapestoindicating positions of the probe needles are formed is placed instead of the probe needles at a position where the probe needles are arranged. The semiconductor device formed on the wafer W is imaged by the imaging unitthrough the reticle. A positional relationship between the shapes formed on the reticleand the electrode padstois analyzed from the image. When necessary, a position of the stageis adjusted such that centers of the shapestoand centers of the electrode padtoare coincident.

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Nirasaki, Japan

Muneaki Tamura