KEY TOP AND KEYBOARD
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United States of America Patent
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Issued Date -
Jan 11, 2018
app pub date -
Jun 13, 2017
filing date -
Jul 5, 2016
priority date (Note) -
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Abstract
A key top including: a transparent substrate that includes a ceiling part, and a side wall part; a first layer having a chromatic color with transparency that is formed on a top face of the ceiling part and an outer wall of the side wall part or a bottom face of the ceiling part and an inner wall of the side wall part; and a second layer that is a whitish color, white, silver or gold, is formed on the first layer, and shields a light from a light source, a part of the second layer corresponding to a character part being removed; wherein a contrast ratio between colors of the first and the second layers at the time of non-lighting is 3:1 or more, and a luminance of the light passing through the character part at the time of lighting is 3 cd/cm2 or more.
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