Abstract: A clock structure enabling highly uniform distribution of illuminating light includes a case frame, a dial, a movement having a shaft extended through the dial, and a set of hands connected to the movement shaft. The clock structure further includes a round acrylic plate located below the dial and having an annular blind groove formed around a peripheral area, a sheet of light uniforming paper attached to an upper surface of the acrylic plate, a silk-screen printing ink layer formed on a lower surface of the acrylic plate, a flexible circuit board mounted in the blind groove, and LED lights equally spaced on the circuit board to emit light toward a radially inner surface of the blind groove. The silk-screen printing ink layer diffusely reflects the light and the light uniforming paper enables uniform distribution of the light over the dial to make the clock structure a high-end product.