| 摘要 |
PURPOSE: A light emitting device of a card is provided to maximize effects of image advertisements of companies by emphasizing a marketing point. CONSTITUTION: A light emitting device of a card includes a base sheet (1), a transparent core sheet (2), and an upper sheet (3). The base sheet arranges a flexible printed circuit board (FPCB) with an LED module (21) connected with a power circuit and a loop antenna (30) connected with the power circuit. The base sheet includes a first reflective plate (40) selected from characters or figures set in a light area of the LED module. The transparent core sheet is installed on the base sheet and shares the first reflective plate with a part of the LED module. The upper sheet is installed on the transparent core sheet and prints light guide ink (70) having the same shape as the first reflective plate's on a bottom side corresponding to the first reflective plate. |
