US-20260130087-A1 - DISPLAY DEVICE

US20260130087A1US 20260130087 A1US20260130087 A1US 20260130087A1US-20260130087-A1

Abstract

A display device includes a display module, a flexible circuit film, a sensor controller, and a cover layer. The display module includes a display panel and an input sensor including a sensing electrode. The flexible circuit film includes a first conductive pattern, a second conductive pattern receiving a reference voltage, and a signal line electrically connected to the sensing electrode. The sensor controller is electrically connected to the signal line and the second conductive pattern and is disposed on the flexible circuit film. The cover layer is disposed on the flexible circuit film and includes a first conductive layer electrically connected to the first conductive pattern and overlapping the signal line, a second conductive layer disposed on the first conductive layer, electrically connected to the second conductive pattern, and overlapping the signal line, and a first insulating layer disposed between the first conductive layer and the second conductive layer.

Inventors

BONGIL KANG
GAYEON YUN

Assignees

SAMSUNG DISPLAY CO., LTD.

Dates

Publication Date: 20260507
Application Date: 20260105
Priority Date: 20210709

Claims (7)

1 . A display device comprising: a display module comprising a display panel and an input sensor comprising a sensing electrode and disposed on the display panel; a flexible circuit film electrically connected to the display module; a sensor controller disposed on the flexible circuit film; and a cover layer disposed on the flexible circuit film, the cover layer comprising a connection pattern and a conductive layer insulated from the connection pattern and disposed on the connection pattern, wherein the flexible circuit film comprising: a first conductive line electrically connected to the sensor controller; a second conductive line electrically connected to the sensing electrode; and a conductive pattern receiving a reference voltage, and wherein the connection pattern electrically connects the first conductive line to the second conductive line, and the conductive layer is electrically connected to the conductive pattern and overlaps the connection pattern.
2 . The display device of claim 1 , wherein the flexible circuit film further comprises a signal line electrically connected to the sensor controller and the sensing electrode, and wherein the conductive layer overlaps the signal line.
3 . The display device of claim 1 , further comprising a conductive adhesive layer disposed between the cover layer and the flexible circuit film to electrically connect the first conductive line to the connection pattern or to electrically connect the conductive pattern to the conductive layer.
4 . The display device of claim 1 , further comprising: a first insulating layer disposed between the connection pattern and the conductive layer; and a second insulating layer disposed on the conductive layer.
5 . The display device of claim 1 , wherein the flexible circuit film comprises: a first contact portion electrically connecting the first conductive line to the connection pattern; and a second contact portion electrically connecting the second conductive line to the connection pattern.
6 . The display device of claim 1 , wherein the connection pattern has a line shape and each of the sensing electrode, the first conductive line, the second conductive line, and the connection pattern is provided in plural.
7 . The display device of claim 1 , wherein each of the first conductive line, the second conductive line, and the connection pattern is provided in plural, the connection patterns are disposed on different layers from each other, and each of the connection patterns is electrically connected to a corresponding first conductive line among the first conductive lines and a corresponding second conductive line among the second conductive lines.

Description

CROSS-REFERENCE TO RELATED APPLICATION This U.S. Non-provisional Patent Application is a Divisional Application of Non-provisional Patent Application U.S. 17/698,153 filed on March 18, 2022, which claims priority under 35 U.S.C. § 119 to Korean Patent Application No. 10-2021-0090515, filed on July 9, 2021, the contents of which are hereby incorporated by reference in their entirety. BACKGROUND 1. Field of disclosure The present disclosure relates to a display device. More particularly, the present disclosure relates to a display device having improved sensing reliability. 2. Description of the Related Art Multimedia electronic devices, such as televisions, mobile phones, tablet computers, navigation units, and game units, include a display device to display images. The display device includes an input sensor that provides a touch-based input method allowing users to easily and intuitively input information or commands in addition to the usual input methods using a button, a keyboard, a mouse, etc. The input sensor senses a touch event or an input generated by user’s body. SUMMARY The present disclosure provides a display device having improved sensing reliability. Embodiments of the inventive concept provide a display device including a display module including a display panel and an input sensor including a sensing electrode and disposed on the display panel, a flexible circuit film electrically connected to the display module and including a first conductive pattern, a second conductive pattern receiving a reference voltage, and a signal line electrically connected to the sensing electrode, a sensor controller electrically connected to the signal line and the second conductive pattern and disposed on the flexible circuit film, and a cover layer disposed on the flexible circuit film and including a first conductive layer electrically connected to the first conductive pattern and overlapping the signal line, a second conductive layer disposed on the first conductive layer, electrically connected to the second conductive pattern, and overlapping the signal line, and a first insulating layer disposed between the first conductive layer and the second conductive layer. The display device further includes a conductive adhesive layer disposed between the cover layer and the flexible circuit film to electrically connect the first conductive pattern to the first conductive layer or to electrically connect the second conductive pattern to the second conductive layer. The first conductive pattern has a line shape and extends along a portion of the signal line. The first conductive pattern includes a first line portion electrically connected to the sensor controller, a second line portion electrically connected to the first conductive layer, and an electrode portion disposed between the first line portion and the second line portion, and a width of the electrode portion is greater than a width of the first line portion. The width of the electrode portion is greater than or equal to about 50 micrometers. The electrode portion overlaps the signal line in a plan view. The first line portion is disposed on a layer different from a layer on which the electrode portion is disposed. The signal line is disposed between the electrode portion and the first conductive layer. The cover layer further includes a second insulating layer disposed on the second conductive layer. The flexible circuit film further includes an insulating layer disposed on the first conductive pattern, the second conductive pattern, and the signal line. The insulating layer is provided with a first contact portion defined therethrough to expose a portion of the first conductive pattern, and the first conductive layer is electrically connected to the first conductive pattern through the first contact portion. The insulating layer is provided with a second contact portion defined therethrough to expose a portion of the second conductive pattern, and the second conductive layer is electrically connected to the second conductive pattern through the second contact portion. The sensing electrode is provided in plural, and the sensing electrodes include a first sensing electrode and a second sensing electrode insulated from the first sensing electrode to form a mutual capacitance. Embodiments of the inventive concept provide a display device including a display module including a display panel and an input sensor including a sensing electrode and disposed on the display panel, a flexible circuit film electrically connected to the display module, a sensor controller disposed on the flexible circuit film, and a cover layer disposed on the flexible circuit film and including a connection pattern and a conductive layer insulated from the connection pattern and disposed on the connection pattern. The flexible circuit film includes a first conductive line electrically connected to the sensor controller, a second conductive line electrically connected to the sensing el