| 摘要 |
A key with efficiency of depth and scattered light has a key body and a light-shading layer. The key body has a key surface and a key back surface opposite to the key surface, and a pattern is formed on the key surface. The light-shading layer is partially light transmissible and covers over the key back surface. The light-shading layer has a first transparent pattern area, which is located corresponding to the patter. The area of first transparent pattern area is greater than or equal to that of the pattern.
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