| 摘要 |
PROBLEM TO BE SOLVED: To provide a keyboard capable of displaying three-dimensional(3D) characters by arranging plural keys on a substrate. SOLUTION: Each key has an outer frame and a 3D character embedded in the outer frame. When a light emitting module arranged between the substrate and the key to supply light is combined, a 3D character can be displayed so as to be clearly identified by utilizing the density of a color corresponding to light between a transparent and light 3D character and a thick or opaque outer frame.
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