Display device

Patent metadata

Field	Value
Publication number	US-2023069851-A1
Application number	US-202217986718-A
Country	US
Kind code	A1
Filing date	Nov 14, 2022
Priority date	Mar 21, 2016
Publication date	Mar 9, 2023
Grant date	—

Abstract

A display device includes a display substrate in which a plurality of sub-pixel areas is defined, a light-emitting diode (“LED”) on the display substrate, a touch sensor electrode on the display substrate and including at least one touch electrode, and a bank separating the plurality of the sub-pixel areas, where each of the plurality of the sub-pixel areas may include a first area in which the LED is disposed and a second area in which the touch sensor electrode is disposed.

First claim

What is claimed is:

1 . A light-emitting diode (“LED”) device, comprising:
a substrate in which a plurality of sub-pixel areas is defined;
an LED structure on the substrate;
a plurality of thin film transistors (“TFT”) on the substrate, the thin film transistor comprising an active layer, a gate electrode, a source electrode and a drain electrode;
a bank separating the plurality of the sub-pixel areas;
a touch sensor including first sensor electrodes and second sensor electrodes on the substrate;
a connecting wire on the substrate;
a dummy pattern on the substrate;
a color filter on the LED structure; and
a black matrix on a circumference of the color filter,
wherein the LED structure includes:
a first electrode;
an LED connected to the first electrode; and
a second electrode connected to the LED,
wherein a pair of first sensor electrodes is electrically connected to each other via the connecting wire,
wherein the connecting wire, the source electrode and drain electrode are formed of same materials,
wherein the touch sensor senses a capacitance change generated between one of the first sensor electrodes and one of the second sensor electrodes,
wherein the first sensor electrodes, the second sensor electrodes and the dummy pattern are arranged on the same layer,
wherein the first sensor electrodes, the second sensor electrodes and the dummy pattern are formed of same materials,
wherein the dummy pattern is in a floating state,
wherein the touch sensor, the connecting wire, the source electrode, the drain electrode and the dummy pattern include metallic materials,
wherein the bank partially exposes the first electrode,
wherein the bank is opaque,
wherein the black matrix covers a top surface and a side surface of the touch sensor,
wherein the color filter contacts a side surface of the black matrix,
wherein a first portion of the one of the first sensor electrodes mainly extends in a first direction and a second portion of the one of the first sensor electrodes mainly extends in a second direction intersecting the first direction,
wherein the first portion of the one of the first sensor electrodes is disposed between a pair of the LEDs,
wherein the second portion of the one of the second sensor electrodes is disposed between a pair of the LEDs, and
wherein the touch sensor is in a mesh shape in a plan view.

2 . The display device of claim 1 , wherein the bank includes a light absorbing material.

3 . A light-emitting diode (“LED”) device, comprising:
a flexible polymer substrate;
a buffer layer on the flexible polymer substrate, substantially totally covering a top surface of the flexible polymer substrate;
a plurality of thin film transistors (“TFT”) on the buffer layer, the thin film transistor comprising an active layer, a gate electrode, a source electrode and a drain electrode;
an LED structure disposed on the plurality of thin film transistors;
a touch sensor including first sensor electrodes and second sensor electrodes on the flexible polymer substrate;
a connecting wiring on the flexible polymer substrate, including a plurality of connecting wirings;
a dummy pattern disposed on the flexible polymer substrate; and
a bank layer on the flexible polymer substrate,
wherein the LED structure includes:
a first electrode; and
an LED connected to the first electrode,
wherein the LED includes a plurality of LEDs,
wherein the plurality of LEDs and the touch sensor do not overlap in a plan view,
wherein the bank layer is disposed on the first electrode and partially exposes the first electrode,
wherein a pair of first sensor electrodes is electrically connected to each other via the connecting wire,
wherein the connecting wire is arranged in a different layer from the pair of first sensor electrodes,
wherein the connecting wire, the source electrode and the drain electrode are formed of same materials,
wherein the touch sensor senses a capacitance change generated between one of the first sensor electrodes and one of the second sensor electrodes,
wherein the first sensor electrodes, the second sensor electrodes and the dummy pattern are arranged on the same layer,
wherein the dummy pattern is in a floating state,
wherein the touch sensor, the connecting wire, the source electrode, the drain electrode and the dummy pattern include metallic materials,
wherein a first portion of the one of the first sensor electrodes mainly extends in a first direction and a second portion of the one of the first sensor electrodes mainly extends in a second direction intersecting the first direction,
wherein the first portion of the one of the first sensor electrodes is disposed between a pair of LEDs which are involved in a different light-emitting, and
wherein the first sensor electrodes and the second sensor electrodes are in a mesh shape in a plan view.

4 . The LED device of claim 3 , wherein the connecting wire, the dummy pattern and the touch sensor are formed of same materials.

5 . The LED device of claim 3 , wherein the connecting wire, the dummy pattern and the touch sensor are arranged on a same layer.

6 . The LED device of claim 3 , wherein the source electrode, the drain electrode, the connecting wire, the dummy pattern and the touch sensor are formed of same materials.

7 . A light emitting diode (“LED”) device, comprising:
a flexible polymer substrate including a pixel region and a touch region;
a buffer layer on the flexible polymer substrate, substantially totally covering a top surface of the flexible polymer substrate;
an LED structure disposed in the pixel region on the flexible polymer substrate;
a plurality of thin film transistors (“TFT”) on the buffer layer, the thin film transistor comprising an active layer, a gate electrode, a source electrode and a drain electrode;
a touch sensor including first sensor electrodes and second sensor electrodes disposed in the touch region on the flexible polymer substrate;
a connecting wiring in the touch region on the flexible polymer substrate; and
a dummy pattern disposed in the touch region on the flexible polymer substrate;
wherein the LED structure includes:
a first electrode;
a LED connected to the first electrode;
a second electrode connected to the LED; and
a bank layer on the first electrode,
wherein the bank layer partially exposes the first electrode,
wherein the LED and the touch sensor do not overlap in a plan view,
wherein a pair of first sensor electrodes are electrically connected to each other via the connecting wire,
wherein the connecting wire, the source electrode and the drain electrode are formed of same materials,
wherein the touch sensor senses a capacitance change generated between one of the first sensor electrodes and one of the second sensor electrodes,
wherein the first sensor electrodes, the second sensor electrodes, and the dummy pattern are arranged on the same layer,
wherein the first sensor electrodes and the second sensor electrodes are not overlapped in a plan view,
wherein the dummy pattern is in a floating state,
wherein the touch sensor, the connecting wire, the source electrode, the drain electrode and the dummy pattern include metallic materials,
wherein a first portion of the one of the first sensor electrodes mainly extends in a first direction and a second portion of the one of the first sensor electrodes mainly extends in a second direction intersecting the first direction,
wherein the first portion of the one of the first sensor electrodes is disposed between a pair of LEDs, and
wherein the second portion of the one of the second sensor electrode is disposed adjacent to one of a pair of LEDs.

8 . The LED device of claim 7 , wherein the connecting

Assignees

• Samsung Display Co Ltd

Inventors

• BOK Seunglyong
• Kim Mugyeom

Classifications

• H10W90/00

  Package configurations · CPC title

• H04M1/725

  Cordless telephones (user interfaces specially adapted therefor H04M1/724) · CPC title

• H10D86/451

  characterised by the compositions or shapes of the interlayer dielectrics · CPC title

• H10D86/60

  wherein the TFTs are in active matrices · CPC title

• H10H29/142

  Two-dimensional arrangements, e.g. asymmetric LED layout · CPC title