Illuminated keyswitch structure

Abstract

An illuminated keyswitch structure includes a base plate, a keycap, and a light-emitting die package. The keycap is movably disposed above the base plate in a vertical direction. The light-emitting die package is disposed under the keycap and includes a plurality of light-emitting dies generating light of at least three colors. The plurality of light-emitting dies are distributed in a plane and are monochromatic light-emitting dies. Therein, among the plurality of light-emitting dies, adjacent two light-emitting dies that are arranged in a first arrangement direction perpendicular to the vertical direction emit light of different colors. Among the plurality of light-emitting dies, adjacent two light-emitting dies that are arranged in a second arrangement direction perpendicular to the vertical direction emit light of different colors. The first arrangement direction and the second arrangement direction are non-parallel.

What is claimed is: 
     
         1 . An illuminated keyswitch structure, comprising:
 a base plate;   a keycap, movably disposed above the base plate in a vertical direction; and   a light-emitting die package, disposed under the keycap and comprising a plurality of light-emitting dies, the plurality of light-emitting dies generating light of at least three colors, the plurality of light-emitting dies being distributed in a plane and being monochromatic light-emitting dies, wherein among the plurality of light-emitting dies, adjacent two light-emitting dies that are arranged in a first arrangement direction perpendicular to the vertical direction emit light of different colors, and among the plurality of light-emitting dies, adjacent two light-emitting dies that are arranged in a second arrangement direction perpendicular to the vertical direction emit light of different colors, and the first arrangement direction and the second arrangement direction are non-parallel.   
     
     
         2 . The illuminated keyswitch structure according to  claim 1 , wherein the light-emitting die package comprises a permeable package material that covers the plurality of light-emitting dies, and the permeable package material has a side surface that is parallel to the first arrangement direction and the vertical direction. 
     
     
         3 . The illuminated keyswitch structure according to  claim 1 , wherein at least two of the plurality of light-emitting dies are arranged adjacent to a side surface of the light-emitting die package. 
     
     
         4 . The illuminated keyswitch structure according to  claim 1 , wherein the light-emitting die package comprises a carrier, the carrier has side walls to form an accommodating space, and the plurality of light-emitting dies are accommodated in the accommodating space. 
     
     
         5 . The illuminated keyswitch structure according to  claim 1 , wherein the plurality of light-emitting dies are arranged in a rectangular ring, and any two adjacent light-emitting dies along the rectangular ring emit light of different colors. 
     
     
         6 . The illuminated keyswitch structure according to  claim 1 , further comprising a switch circuit board that is light-transmitting and disposed above the light-emitting die package, wherein the switch circuit board comprises a permeable carrying plate structure and circuitry carried on the permeable carrying plate structure, and the switch circuit board and the light-emitting die package do not overlap in the vertical direction. 
     
     
         7 . The illuminated keyswitch structure according to  claim 1 , further comprising a switch circuit board that is light-transmitting and disposed above the light-emitting die package, wherein the switch circuit board comprises a switch contact pad, the switch contact pad has a flat edge, and at least two of the plurality of light-emitting dies are arranged adjacent to and parallel to the flat edge. 
     
     
         8 . The illuminated keyswitch structure according to  claim 7 , wherein the switch circuit board is placed on the base plate, the base plate has an upper surface and a through hole communicating with the upper surface, vertical projections of the switch contact pad and the light-emitting die package on the base plate fall within the through hole, the light-emitting die package does not exceed the upper surface in the vertical direction, the through hole has a straight hole edge, and at least two of the plurality of light-emitting dies are arranged adjacent to and parallel to the straight hole edge. 
     
     
         9 . The illuminated keyswitch structure according to  claim 1 , further comprising a switch circuit board, wherein the switch circuit board and the base plate are stacked, the switch circuit board is disposed above the light-emitting die package, the base plate a through hole, the switch circuit board comprises a switch contact pad, and vertical projections of the switch contact pad and the light-emitting die package on the base plate fall within the through hole. 
     
     
         10 . The illuminated keyswitch structure according to  claim 9 , wherein the through hole comprises a main hole portion and an extension portion extending from a side of the main hole portion, the vertical projection of the switch contact pad on the base plate falls within the main hole portion, and the vertical projection of the light-emitting die package on the base plate falls within the extension portion. 
     
     
         11 . The illuminated keyswitch structure according to  claim 1 , further comprising a switch circuit board that is light-transmitting, wherein the switch circuit board and the base plate are stacked, the switch circuit board is disposed above the light-emitting die package, the base plate has a through hole, the switch circuit board comprises a switch contact pad, a vertical projection of the light-emitting die package on the base plate falls within the through hole, and a vertical projection of the switch contact pad on the base plate is located outside the through hole. 
     
     
         12 . The illuminated keyswitch structure according to  claim 1 , further comprising a switch circuit board that is light-transmitting, wherein the switch circuit board and the base plate are stacked, the switch circuit board is disposed above the light-emitting die package, the switch circuit board a trace segment extending straight, and at least two of the plurality of light-emitting dies are arranged adjacent to and parallel to the trace segment. 
     
     
         13 . The illuminated keyswitch structure according to  claim 1 , wherein the keycap has a permeable indicator area, the permeable indicator area has a lengthwise direction, the permeable indicator area comprises a plurality of permeable characters arranged along the lengthwise direction, and the permeable indicator area and the light-emitting die package at least partially overlap in the vertical direction. 
     
     
         14 . The illuminated keyswitch structure according to  claim 1 , wherein the keycap has a permeable indicator area, the permeable indicator area has a lengthwise direction, at least two of the plurality of light-emitting dies are arranged parallel to the lengthwise direction, and at least two adjacent ones of the plurality of light-emitting dies have edges perpendicular to the lengthwise direction. 
     
     
         15 . The illuminated keyswitch structure according to  claim 1 , further comprising a light-guiding sheet that is disposed under the base plate, wherein the light-guiding sheet has an accommodating recess, the light-emitting die package is located in the accommodating recess, and light emitted by the light-emitting die package enters the light-guiding sheet from an inner wall surface of the accommodating recess. 
     
     
         16 . The illuminated keyswitch structure according to  claim 1 , further comprising a mask layer that is disposed directly above the light-emitting die package and covers the light-emitting die package. 
     
     
         17 . The illuminated keyswitch structure according to  claim 1 , further comprising a mask layer that covers the light-emitting die package, wherein the mask layer has at least one permeable area disposed on a periphery of a projection of the light-emitting die package on the mask layer. 
     
     
         18 . The illuminated keyswitch structure according to  claim 17 , wherein the base plate has a through hole, and a vertical projection of the permeable area on the base plate falls within the through hole. 
     
     
         19 . The illuminated keyswitch structure according to  claim 17 , wherein the base plate has a through hole, and a vertical projection of an impermeable area of the mask layer on the base plate at least partially falls within the through hole. 
     
     
         20 . The illuminated keyswitch structure according to  claim 1 , wherein the base plate has a through hole, the through hole has a straight hole edge, at least two adjacent ones of the plurality of light-emitting dies are arranged parallel to the straight hole edge, and at least two adjacent ones of the plurality of light-emitting dies are arranged perpendicular to the straight hole edge.