US 12,336,415 B2Granted

Touch panel

AssigneeSemiconductor Energy Laboratory Co., Ltd.

InventorsShunpei Yamazaki, Yoshiharu Hirakata, Hiroyuki Miyake

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Abstract

A flexible touch panel is provided. Both reduction in thickness and high sensitivity of a touch panel are achieved. The touch panel includes a first flexible substrate, a first insulating layer over the first substrate, a transistor and a light-emitting element over the first insulating layer, a color filter over the light-emitting element, a pair of sensor electrodes over the color filter, a second insulating layer over the sensor electrodes, a second flexible substrate over the second insulating layer, and a protective layer over the second substrate. A first bonding layer is between the light-emitting element and the color filter. The thickness of the first substrate and the second substrate is each 1 μm to 200 μm inclusive. The first bonding layer includes a region with a thickness of 50 nm to 10 μm inclusive.

Claims9

Dependent claims

A touch panel comprising:

a display portion over a first adhesive layer;
a second adhesive layer over the display portion;
a touch sensor over the second adhesive layer;
a third adhesive layer over the touch sensor;
a first flexible printed circuit electrically connected to the display portion through a first conductive layer;
an IC mounted on the first flexible printed circuit, the IC functioning as a signal line driver circuit;
and
a second flexible printed circuit electrically connected to the touch sensor through a second conductive layer,
wherein the display portion comprises:
a first insulating layer over the first adhesive layer;
a transistor over the first insulating layer;
a second insulating layer over the transistor;
and
a light-emitting element over the second insulating layer,
wherein the touch sensor comprises a sensor electrode,
wherein, when seen from above, the first flexible printed circuit faces the second flexible printed circuit with the display portion and the touch sensor therebetween, and
wherein a bottom surface of the first conductive layer and a bottom surface of the second conductive layer are in contact with the first insulating layer.

14 more elements

Dependencies are inferred from the claim text.

Facts

Application: 18/376,464Filed 4 Oct 2023 · continuation
Priority: JP 2013-24539727 Nov 2013
Published: US 2024/0049555 A18 Feb 2024
Granted: 17 Jun 2025
Term ends: Not estimatedThe source records don’t support an estimate.

Classification15 codes

H10K 59/40
Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00: oLEDs…
G06F 1/1652
Details related to the display arrangement, including those related to the mounting of the display in the housing: the display being flexible,…
G06F 3/0412
Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means: digitisers structurally integrated in a display
G06F 3/04164
Control or interface arrangements specially adapted for digitisers: connections between sensors and controllers, e.g. routing lines between…

Family

Application14/551,955Parent of this continuation · filed 24 Nov 2014
Application15/819,017Parent of this continuation · filed 21 Nov 2017
US 9,847,380 B2Parent of this continuation · filed 19 Dec 2017
Application17/521,925Parent of this continuation · filed 9 Nov 2021
US 11,177,328 B2Parent of this continuation · filed 16 Nov 2021
US 2024/0049555 A1Pre-grant publication · published 8 Feb 2024
US 11,785,826 B2Parent of this continuation
US 2015/0144920 A1Published application
US 2018/0097040 A1Published application
US 2022/0069020 A1Published application
US 12,336,415 B2This patent

From the US filing history. Foreign family members aren’t listed.