US 10,310,643 B2 · Touch panel and junction structure of touch panel and flexible printed circuit board

Abstract

A touch panel includes: an adhesive layer formed on a base film; a protective layer formed on the adhesive layer; a touch sensor portion formed on the protective layer; a bonding pad portion comprising a plurality of unit bonding pads formed on the protective layer as electrically connected to the touch sensor portion; and a first insulating layer formed on the protective layer to extend from a unit bonding pad while filling separation regions between the unit bonding pads. Since the deformations in the elements of the touch panel during the process of bonding the touch panel and the flexible printed circuit board are prevented, there are effects that the degradation in the performance of the touch panel is prevented, and the structural stability of the junction structure of the touch panel and the flexible printed circuit board is secured.

Claims16

Dependent claims

A touch panel comprising:

an adhesive layer formed on a base film;
a protective layer formed on the adhesive layer;
a touch sensor portion formed on the protective layer;
a bonding pad portion comprising a plurality of unit bonding pads formed on the protective layer as electrically connected to the touch sensor portion;
and
a first insulating layer formed on the protective layer to extend from the unit bonding pads while filling separation regions between the unit bonding pads,
wherein the unit bonding pad comprises a plurality of insulating columns having a height corresponding to the first insulating layer or an insulating pattern portion having a height corresponding to the first insulating layer and formed with a plurality of holes.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application

15/466,449Filed 22 Mar 2017

Priority

KR 10-2016-003951231 Mar 2016

Published

US 2017/0285779 A15 Oct 2017

Granted

4 Jun 2019

Term ends

Not estimatedThe source records don’t support an estimate.

Classification14 codes

G06F 3/04164
Control or interface arrangements specially adapted for digitisers: connections between sensors and controllers, e.g. routing lines between…
G06F 3/041
Arrangements for converting the position or the displacement of a member into a coded form: digitisers, e.g. for touch screens or touch pads,…
G06F 3/0446
By capacitive means: using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes
H05K 1/117
Printed elements for providing electric connections to or between printed circuits: pads along the edge of rigid circuit boards, e.g. for…

Touch panel and junction structure of touch panel and flexible printed circuit board

Life of this patent

Touch panel and junction structure of touch panel and flexible printed circuit board

Life of this patent

Abstract

Claims16