Granted Patent B2

US 12,510,212 · App. 18/688,157 · Granted Dec 30, 2025

Inventors: Jun Lu (Shanghai, CN); Hang Li (Shanghai, CN)

Assignee: SIGNIFY HOLDING B.V.

F21K9/00F21V5/007F21V7/0083F21V7/041F21V19/0025F21Y2105/12F21Y2113/13F21Y2115/10

Abstract

Claims (45)

1 . A lighting device comprising:

a substrate;

at least two modules provided on the substrate, wherein each module comprises:

an array of LED chip connection pads;

interconnections between the chip connection pads to implement a plurality of groups of connection pads, each group comprising a plurality of connection pads in parallel, and the groups being in series with each other;

LED chips mounted on the connection pads, with at least two LED chips of different color points mounted on respective connection pads of each group;

an optical unit for shaping the light output from the LED chips; and

wherein the array of LED chip connection pads comprises a rectangular grid of chip connection pads,

wherein the rectangular grid is a 3×4 grid;

wherein a first group is a 2×2 sub-array in one corner of the grid, a third group is a 2×2 sub-array in an adjacent corner of the grid, and a second group is the remaining 4×1 sub-array;

wherein over the first, 2×2, sub-array, there are two warm white LED chips and one cyan LED chip;

over the second, 4×1, sub-array, there are one warm white LED chip and two cool white LED chips; and

over the third, 2×2, sub-array, there are two warm white LED chips, one cool white LED chip and one cyan LED chip.

2 . The lighting device of claim 1 , wherein the two cyan LED chips are at a central portion of the module.

3 . The lighting device of claim 1 , wherein the LED chips mounted on different groups include at least two different sets of LED color points.

4 . The lighting device of claim 1 , comprising a linear row of the modules.

5 . The lighting device of claim 4 comprising four modules.

6 . The lighting device of claim 1 , wherein the optical unit comprises a reflector around the outside of the array of LED chips.

7 . The lighting device of claim 6 , wherein the reflector comprises a truncated square or rectangular based pyramid shape.

8 . The lighting device of claim 6 , wherein the optical unit comprises a lens.

9 . A lighting device comprising:

a substrate;

at least two modules provided on the substrate, wherein each module comprises:

an array of LED chip connection pads;

interconnections between the chip connection pads to implement a plurality of groups of connection pads, each group comprising a plurality of connection pads in parallel, and the groups being in series with each other;

LED chips mounted on the connection pads, with at least two LED chips of different color points mounted on respective connection pads of each group;

an optical unit for shaping the light output from the LED chips;

an optical unit for shaping the light output from the LED chips; wherein:

there are LED chips on each LED connection pad; or

within each group of LED connection pads, there is one vacant connection pad; or

within each group of LED connection pads, there are two vacant connection pads; or

different groups of LED connection pads have different numbers of vacant connection pads.

10 . A lighting device comprising:

a substrate;

at least two modules provided on the substrate, wherein each module comprises:

an array of LED chip connection pads;

interconnections between the chip connection pads to implement a plurality of groups of connection pads, each group comprising a plurality of connection pads in parallel, and the groups being in series with each other;

LED chips mounted on the connection pads, with at least two LED chips of different color points mounted on respective connection pads of each group;

an optical unit for shaping the light output from the LED chips;

an optical unit for shaping the light output from the LED chips;

wherein the LED chips mounted on all groups have the same set of LED color points; and

wherein the at least two different color points of the LED chips mounted over each group of LED connection pads comprise two of:

warm white;

cool white; and

cyan.

Assignments (1)

Priority Claims (2)

Continuity (1)

References Cited (28)