US 11,732,881 B1Granted

Leather workpiece and manufacturing method thereof

AssigneeHiroca Automotive Trim Corporation

InventorChe-Ming Yu

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Abstract

A leather workpiece is adapted to emit a light at a surface pattern, and includes a first light-transmitting substrate, a first adhesive layer, a second light-transmitting substrate, a circuit board, and a light-emitting element group. The first adhesive layer is disposed between the first light-transmitting substrate and the second light-transmitting substrate. The circuit board is fixed on the second light-transmitting substrate. The light-emitting element group is disposed on the circuit board and is configured to emit an illumination beam. The first light-transmitting substrate has the surface pattern on a surface opposite to the first adhesive layer. The illumination beam sequentially passes through the first adhesive layer and the surface pattern of the first light-transmitting substrate, so that the leather workpiece emits the light at the surface pattern. A manufacturing method of the leather workpiece is also provided.

Claims26

Dependent claims

A leather workpiece adapted to emit a light at a surface pattern, comprising:

a first light-transmitting substrate;
a first adhesive layer;
a second light-transmitting substrate, wherein the first adhesive layer is disposed between the first light-transmitting substrate and the second light-transmitting substrate;
a light-transmitting intermediate layer, disposed between the first light-transmitting substrate and the first adhesive layer, wherein the first adhesive layer is disposed between the light-transmitting intermediate layer and the second light-transmitting substrate, so that the second light-transmitting substrate is bonded to the light-transmitting intermediate layer;
a circuit board fixed on the second light-transmitting substrate;
and
a light-emitting element group disposed on the circuit board to emit an illumination beam,
wherein the first light-transmitting substrate has the surface pattern on a surface opposite to the first adhesive layer, or the light-transmitting intermediate layer has the surface pattern on a surface toward the first adhesive layer,
wherein the illumination beam sequentially passes through the first adhesive layer and the surface pattern of the first light-transmitting substrate or the light-transmitting intermediate layer, so that the leather workpiece emits the light at the surface pattern.

6 more elements

A manufacturing method of a leather workpiece, comprising:

disposing a light-transmitting intermediate layer on a first light-transmitting substrate;
forming a first adhesive layer on one side of the light-transmitting intermediate layer opposite to the first light-transmitting substrate, or forming the first adhesive layer on a second light-transmitting substrate;
using a fixture to fix the first light-transmitting substrate and the light-transmitting intermediate layer, and attaching the second light-transmitting substrate to the light-transmitting intermediate layer through the first adhesive layer;
fixing a circuit board on the second light-transmitting substrate, wherein a light-emitting element group is disposed on the circuit board, and an illumination beam emitted by the light-emitting element group sequentially passes through the first adhesive layer and a surface pattern of the first light-transmitting substrate or the light-transmitting intermediate layer, so that the leather workpiece emits a light at the surface pattern;
and
enabling a plurality of first fixing members to pass through the first light-transmitting substrate, the light-transmitting intermediate layer, the first adhesive layer, and the second light-transmitting substrate at a tail end of the leather workpiece away from the surface pattern.

3 more elements

Dependencies are inferred from the claim text.