Patent ID: 7976741

Claim:
A method of manufacturing a light guide plate of a keypad, comprising: (a) preparing a screen plate having a plurality of areas, each area comprising a plurality of meshes; (b) preparing a carrier; (c) mixing a baking type ink and a glass microbead to produce a mixture; (d) attaching a first side of the screen plate to a surface of the carrier; (e) pouring the mixture on a second side of the screen plate opposite the first side of the screen plate; (f) using a smoothing tool to level the surface of the carrier, such that the mixture can be permeated into a mesh and attached onto the surface of the carrier; and (g) performing a baking process to cure the mixture onto the carrier, so as to complete manufacturing the light guide plate, wherein the light guide plate being is able to converge light and able to change a light distribution density from its density at a light source.