IP Library Granted Patent US 12,050,752
Granted Patent B2
US 12,050,752 · App. 18/077,163 · Granted Jul 30, 2024

Display device

Inventors: Hyunwoong Kim (Gwangmyeong-si, KR); Kwang-min Kim (Seoul, KR); Kiwook Kim (Hwaseong-si, KR); Yangwan Kim (Hwaseong-si, KR); Jisu Na (Yongin-si, KR)
Assignee: Samsung Display Co., Ltd.
G06F3/0446G06F3/0443H10K59/40G06F2203/04111
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Quick Facts
Patent No.
US 12,050,752
App. No.
18/077,163
Granted
Jul 30, 2024
Kind
B2
Abstract

A display device including a display panel and an input sensor including a sensing region and a wiring region, the input sensor including a first sensing electrode, a second sensing electrode, a first signal line electrically connected to a first end of the first sensing electrode, a second end thereof being electrically isolated, and second and third signal lines electrically connected to ends of the second sensing electrode, respectively, in which a total distance between the ends of the second sensing electrode is greater than that between the ends of the first sensing electrode, the second sensing electrode includes sensor parts formed from a same layer as the first sensing electrode and bridge patterns formed from a different layer from the sensor parts, and each of the first end and the second end of the second sensing electrode is configured to receive a sinusoidal signal.

Claims (22)

1. A display device comprising:

a display panel comprising a base layer, a circuit element layer disposed on the base layer, a display element layer disposed on the circuit element layer, and an upper insulating layer disposed on the display element layer; and

an input sensor disposed on the display panel and including a sensing region and a wiring region outside the sensing region, the input sensor comprising:

a first sensing electrode disposed in the sensing region extended along a second direction;

a second sensing electrode disposed in the sensing region extended along a first direction crossing the second direction;

a first signal line electrically connected to a first end of the first sensing electrode, a second end of the first sensing electrode opposite to the first end of the first sensing electrode in the second direction is electrically isolated;

a second signal line electrically connected to a first end of the second sensing electrode; and

a third signal line electrically connected to a second end of the second sensing electrode opposite to the first end of the second sensing electrode in the first direction,

wherein a total distance between the first end and the second end of the second sensing electrode is greater than a total distance between the first end and the second end of the first sensing electrode,

the first sensing electrode has a single body shape,

the second sensing electrode comprises sensor parts formed from a same layer as the first sensing electrode and bridge patterns formed from a different layer from the sensor parts, the sensor parts arranged in the first direction, and each of the bridge patterns connects two neighboring sensor parts among the sensor parts,

the display device further includes a signal transmission region in which at least a part of the base layer, the circuit element layer, the display element layer, and the upper insulating layer is removed, and

each of the first end and the second end of the second sensing electrode is configured to receive a sinusoidal signal.

2. The display device of claim 1 , wherein the first sensing electrode is configured to provide a sensing signal corresponding to the sinusoidal signal to a sensing circuit.

3. The display device of claim 1 , wherein:

the display panel comprises a display region corresponding to the sensing region and a non-display region corresponding to the wiring region;

the display region comprises light emission regions and non-light emission regions; and

the first sensing electrode has openings that correspond to the light emission regions.

4. The display device of claim 1 , wherein the first sensing electrode and the second sensing electrode are formed from a same layer.

5. The display device of claim 1 , wherein the input sensor further comprises an insulating layer disposed between the bridge patterns and the sensor parts.

6. The display device of claim 1 , wherein the display device further includes a notch region recessed inwardly in a plan view.

7. The display device of claim 1 , wherein the input sensor is directly disposed on the display panel.

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Apr 16, 2024
From: KIM, HYUNWOONG; KIM, KWANG-MIN; KIM, KIWOOK; KIM, YANGWAN; NA, JISU
To: SAMSUNG DISPLAY CO., LTD.
Reel/Frame 067119/0151 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Apr 16, 2024
From: KIM, HYUNWOONG; KIM, KWANG-MIN; KIM, KIWOOK; KIM, YANGWAN; NA, JISU
To: SAMSUNG DISPLAY CO., LTD.
Reel/Frame 067129/0852 →
Priority Claims (2)
KR 10-2018-0127515 · Oct 24, 2018 · national
KR 10-2018-0145486 · Nov 22, 2018 · national
Continuity (2)
Continuation 16551641 · Aug 26, 2019
Related Publication 20230104063A1 · Apr 6, 2023