Socket for testing semiconductor device

1 . A socket for testing a semiconductor package, the socket comprising:

a body having an internal space configured to accommodate a wafer level package; and

a plurality of spacers on the body and positioned to contact a first surface of the wafer level package when the wafer level package is placed on the body,

wherein the body includes a lower socket portion provided with through-holes, configured through which to receive meter reading pins that contact external connection terminals of the wafer level package, and an upper socket portion disposed above the lower socket portion,

wherein the plurality of spacers are disposed on a first surface of the lower socket portion that faces the first surface of the wafer level package when the wafer level package is placed on the body, and

wherein a first surface of the upper socket portion faces the first surface of the lower socket portion so that the plurality of spacers are between the first surface of the upper socket portion and the first surface of the lower socket portion.

2 . The socket of claim 1 , wherein the plurality of spacers are disposed spaced apart from each other on the first surface of the lower socket portion.

3 . The socket of claim 2 , wherein the plurality of spacers are disposed at corners of the first surface of the lower socket portion.

4 . The socket of claim 1 , wherein the plurality of spacers each have a height above the first surface of the lower socket portion of 100 μm or more.

5 . The socket of claim 1 , wherein the lower socket portion and the upper socket portion are detachably configured.

6 . The socket of claim 1 , wherein when the wafer level package is tested, the external connection terminals are disposed in the through-holes and contact the meter reading pins.

7 . The socket of claim 1 , wherein the plurality of spacers are disposed spaced apart from each other on the first surface of the lower socket portion, and wherein the plurality of spacers are disposed at a central portion and at edges of the first surface of the lower socket portion.

8 . The socket of claim 1 , wherein the upper socket portion includes a sidewall part connected to an edge of the lower socket portion and a cover part disposed above the sidewall part.

9 . The socket of claim 1 , wherein the lower socket portion has a plate shape.

10 . The socket of claim 1 , wherein the plurality of spacers each have a cylindrical or polygonal column shape.

11 . The socket of claim 1 , wherein the wafer level package is provided with an under bump metallurgy (UBM) layer disposed between connection pads and the external connection terminals.

12 . The socket of claim 1 , wherein the plurality of spacers have a strip shape.

13 . The socket of claim 12 , wherein the plurality of spacers include a first spacer disposed at an edge of the first surface of the lower socket portion and disposed at a corner of a rectangular strip shape, and a second spacer disposed at a central portion of the first surface of the lower socket portion and disposed at a corner of a rectangular strip shape.

14 . A socket for testing a semiconductor package, the socket comprising:

a body including a lower socket portion having a lower surface and an upper surface opposite the lower surface and provided with a through-hole through which, during testing, a meter reading pin in contact with a solder ball provided in a wafer level package penetrates, and an upper socket portion having an upper surface and having a lower surface facing the upper surface of the lower socket portion, the upper socket portion disposed above the lower socket portion; and

a plurality of spacers installed on the upper surface of the lower socket portion, to be disposed between the upper surface of the lower socket portion and the lower surface of the upper socket portion, and positioned to contact one surface of the wafer level package during testing,

wherein the plurality of spacers are disposed spaced apart from each other on the upper surface of the lower socket portion, and

wherein each spacer has a cylindrical or polygonal column shape.

15 . The socket of claim 14 , wherein the plurality of spacers are disposed at an edge of the upper surface of the lower socket portion.

16 . The socket of claim 14 , wherein the plurality of spacers include a first spacer disposed at a central portion of the upper surface of the lower socket portion and a second spacer disposed at an edge of the upper surface of the lower socket portion.

17 . A socket for testing a semiconductor package, the socket comprising:

a body having an internal space configured to accommodate a semiconductor package; and

at least a first spacer on the body and positioned to contact a first surface of the semiconductor package when the semiconductor package is placed on the body,

wherein the body includes a lower socket portion provided with through-holes, configured through which to receive meter reading pins that contact external connection terminals of the semiconductor package, and an upper socket portion disposed above the lower socket portion, and

wherein the first spacer is disposed on an upper surface of the lower socket portion that faces a lower surface of the upper socket portion and faces the first surface of the semiconductor package when the semiconductor package is placed on the body.

18 . The socket of claim 17 , wherein the first spacer is one of a plurality of spacers disposed on the upper surface of the lower socket portion, which spacers separate the upper surface of the lower socket portion from the first surface of the semiconductor package by a distance of at least 100 μm.

19 . The socket of claim 17 , wherein the external connection terminals are solder balls or bumps.