US 12,415,417 B2
Three-dimensional touch device and manufacturing method thereof
Chia Tsun Huang, Hsinchu County (TW); Hsuan Yao, Hsinchu County (TW); Chun-Ling Huang, Hsinchu County (TW); and Chia-Hung Liu, Hsinchu County (TW)
Assigned to DARWIN PRECISIONS CORPORATION, Hsinchu County (TW)
Filed by DARWIN PRECISIONS CORPORATION, Hsinchu County (TW)
Filed on Oct. 12, 2023, as Appl. No. 18/379,175.
Claims priority of application No. 112113311 (TW), filed on Apr. 10, 2023.
Prior Publication US 2024/0336135 A1, Oct. 10, 2024
Int. Cl. H05K 1/18 (2006.01); B60K 35/00 (2006.01); B60K 35/10 (2024.01); B60K 35/60 (2024.01)
CPC B60K 35/00 (2013.01) [H05K 1/189 (2013.01); B60K 35/10 (2024.01); B60K 35/60 (2024.01); B60K 2360/1446 (2024.01); B60K 2360/782 (2024.01)] 20 Claims
OG exemplary drawing
 
1. A three-dimensional touch device, comprising:
a first flexible circuit board structure, comprising a first flexible circuit substrate and a plurality of first touch electrodes, wherein the first flexible circuit substrate is provided with an outer surface and an inner surface opposite to each other; the plurality of first touch electrodes are disposed on the outer surface; the first flexible circuit substrate comprises a plurality of folded lines, and at least two of the plurality of folded lines are not parallel to each other; a contour of the first flexible circuit structure is formed by bending the first flexible circuit substrate, and the first flexible circuit substrate is suitable for having a main body portion and a plurality of bending portions; each of the plurality of bending portions is connected to the main body portion through each of the plurality of folded lines; and
an in-mold formed film, encapsulating the inner surface, the outer surface and the plurality of first touch electrodes, and comprising an exterior film layer covering the outer surface and the plurality of first touch electrodes, wherein the contour of the first flexible circuit structure approaches at least a first-part contour of the exterior film layer.