US-20260126880-A1 - DISPLAY APPARATUS

US20260126880A1US 20260126880 A1US20260126880 A1US 20260126880A1US-20260126880-A1

Abstract

A display apparatus includes a substrate having an active area and a non-active area adjacent to the active area defined thereon; a first touch line in the non-active area and a second touch line on the first touch line; and a front member on the first and second touch lines, the front member being in at least a part of the non-active area, and including a transmissive part and a blocking part, wherein the first touch line is in an area overlapping the transmissive part, and the first touch lines includes at least two patterns.

Inventors

Geonwoo Lee
Geon Jang

Assignees

LG DISPLAY CO., LTD.

Dates

Publication Date: 20260507
Application Date: 20251229
Priority Date: 20211230

Claims (16)

1 . A display apparatus, comprising: a substrate including an active area and a non-active area adjacent to the active area; a transistor disposed on the substrate; a planarization layer disposed on the transistor; a light emitting diode layer disposed on the transistor, and including an anode electrode electrically connected to the transistor, an emission layer disposed on the anode electrode and a cathode electrode disposed on the emission layer; a protection layer disposed on the light emitting diode layer, and including a first protection layer, a third protection layer and a second protection layer between the first protection layer and the third protection layer; a touch buffer layer disposed on the protection layer; a first touch connection electrode and a first touch line disposed on the touch buffer layer; a touch insulating layer disposed on the first touch connection electrode and the first touch line; a first touch electrode, a second touch electrode, a second touch connection electrode and a second touch line disposed on the touch insulating layer; and a touch planarization layer disposed on the first touch electrode, the second touch electrode, the second touch connection electrode and the second touch line, wherein the first touch line overlaps with the second touch line in the non-active area, wherein the cathode electrode overlaps with at least one of the first touch line or the second touch line in the non-active area, and wherein the first touch line and the second touch line extend in a same direction and are parallel to each other within non-active area.
2 . The display apparatus according to claim 1 , wherein the protection layer, the touch buffer layer, the first touch line, the touch insulating layer and the second touch line include an inclined surface overlapped the non-active area.
3 . The display apparatus according to claim 2 , wherein the inclined surface is disposed on at least three sides of the non-active area.
4 . The display apparatus according to claim 2 , wherein the inclined surface is disposed between a touch driver and the active area.
5 . The display apparatus according to claim 1 , wherein the first protection layer is inorganic layer, and wherein the second protection layer is organic layer.
6 . The display apparatus according to claim 1 , wherein the first touch connection electrode, the first touch line, the first touch electrode, the second touch electrode, the second touch connection electrode and the second touch line include same material.
7 . The display apparatus according to claim 6 , wherein the material includes at least one of molybdenum(Mo), silver(Ag), titanium(Ti), copper(Cu), aluminum(Al), titanium/aluminum/titanium(Ti/Al/Ti) and molybdenum/aluminum/molybdenum(Mo/Al/Mo).
8 . The display apparatus to claim 2 , wherein a one end portion of the touch planarization is disposed on the inclined surface of the second touch line, in the non-active area, and wherein the one end portion of the touch planarization is formed a step on the inclined surface.
9 . The display apparatus to claim 1 , further comprising: an adhesive layer disposed on the touch planarization layer; a polarizer disposed on the adhesive layer; and a front member disposed on the polarizer.
10 . The display apparatus to claim 9 , wherein the polarizer overlaps a one end portion of the touch planarization layer in the non-active area.
11 . The display apparatus to claim 9 , wherein the front member comprises: a transmissive part overlapped the active area and at least some of the non-active area; and a blocking part overlapped the non-active area.
12 . The display apparatus to claim 11 , wherein the blocking part overlaps a one end portion of the touch planarization layer.
13 . The display apparatus to claim 11 , wherein at least some of the first touch line overlaps the transmissive part.
14 . The display apparatus to claim 11 , wherein the first touch line comprises at least two patterns in the area overlapping the transmissive part.
15 . The display apparatus to claim 14 , wherein each of the at least two patterns have a smaller width than the first touch line in the area overlapping the blocking part.
16 . The display apparatus to claim 14 , wherein at least two patterns are electrically connected to each other.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS This is a continuation of U.S. application Ser. No. 18/799,995, filed Aug. 9, 2024, which is a continuation of U.S. application Ser. No. 18/078,703, filed Dec. 9, 2022, and also claims the priority of Korean Patent Application No. 10-2021-0192381 filed on Dec. 30, 2021, in the Korean Intellectual Property Office, all of which are hereby incorporated herein by reference. BACKGROUND Technical Field The present disclosure relates to a display apparatus, and more particularly, to a display apparatus which provides a uniform contrast ratio to the display apparatus. Discussion of the Related Art Recently, as it enters an information era, display technology to visually express electrical information signals has rapidly developed, and in response to this, various display apparatuses having excellent performances, such as thin profile, low weight, and low power consumption have been developed. Specific examples of the display apparatus may include a liquid crystal display apparatus (LCD), an organic light emitting display apparatus (OLED), and a quantum dot display apparatus. To provide more various functions to users, as the display apparatus, a touch display apparatus having a touch based input method for users to intuitively and easily input information or instructions by breaking away from the usual input methods, such as a button, a keyboard, or a mouse is being studied. The display apparatus may include a plurality of touch electrodes which is disposed on the display panel or embedded in the display panel. Further, the display apparatus may detect the presence of touch or the touch coordinate based on the change in the capacitance formed in the plurality of touch lines formed on a substrate by the touch of the user. The touch electrode included in the display panel is electrically connected to a touch driving circuit by the touch line and is driven. The touch electrode is disposed in the active area in which the image is displayed and the touch line is disposed in the non-active area in the display panel in which the image is not displayed. The touch electrode and the touch line may be configured using an opaque conductive material. When the touch electrode disposed in the active area is formed of an opaque conductive material, light emitted from the plurality of sub pixels disposed below the touch electrode is blocked so as not to be transmitted to the upper portion so that the touch electrode may be disposed in a non-emission area disposed between the sub pixels in the active area. Accordingly, the touch electrode may be designed to have a small line width so as to be disposed in the non-emission area between the sub pixels disposed in the active area. The touch line disposed in the non-active area may electrically connect the touch driving circuit and the touch electrode to transmit a signal from the touch driving circuit to the touch electrode. When the number of touch lines and the length of the touch line are increased to transmit the signal of the touch driving circuit disposed in a part of the non-active area to the touch electrode, there may be a problem in that the resistance of the touch line or RC delay is increased. Therefore, the touch line needs to be designed with a width larger than that of the touch electrode in the active area to reduce the resistance of the touch line or the RC delay. When the display apparatus does not operate, external light may be incident into the display apparatus. The external light incident into the display apparatus is reflected by various metal electrodes and wiring lines formed in the display apparatus. Light reflected by the metal electrode and the wiring line in the display apparatus may be transmitted to the outside again. When the reflected light is transmitted, reflected light may not be transmitted to the outside of the display apparatus, but may be blocked, by the touch electrode and the touch line disposed in an upper portion of the display apparatus. The touch line in the non-active area is formed thicker than the touch electrode in the active area so that an amount of reflected light transmitted to the outside may be smaller than that of the surrounding area. By doing this, when the user watches the display apparatus, there is a problem in that an area in which the touch line is formed appears darker than the surround area. Accordingly, improved reliability of the product to improve the contrast ratio difference in a partial non-active area of the display apparatus may be desired. Various studies are being made to reduce the contrast ratio difference generated when the display apparatus does not operate, but it is still insufficient so that development thereof is urgently required. SUMMARY Accordingly, embodiments of the present disclosure are directed to a display apparatus that substantially obviates one or more of the problems due to limitations and disadvantages of the related art. An aspect of the present disc