# US 2017/0288010 A1 · Organic Light Emitting Display Device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2017/0288010 A1 - Document ID: US20170288010A1 - Status: Published application - Kind: A1 - Application number: 15/620,795 - Filed: 2017-06-12 - Published: 2017-10-05 - Earliest claimed: 2015-08-28 - Assignees: LG Display Co., Ltd. - Applicants: LG Display Co., Ltd. - Inventors: Joonsoo HAN; JaeHee PARK; JeongHyeon CHOI - Web page: https://patentgrep.com/patent/US20170288010A1 ## CPC - H10K 59/80522: {combined with auxiliary electrodes} - H10D 30/6729: {characterised by the electrodes} - H10K 59/1315: {comprising structures specially adapted for lowering the resistance} - H10K 59/80515: {characterised by their shape} - H10K 59/1201: {Manufacture or treatment} - H10K 59/122: Pixel-defining structures or layers, e.g. banks - H10K 59/123: Connection of the pixel electrodes to the thin film transistors [TFT] - H10K 59/131: Interconnections, e.g. wiring lines or terminals - H10K 59/80518: {Reflective anodes, e.g. ITO combined with thick metallic layers} - H10K 59/80524: {Transparent cathodes, e.g. comprising thin metal layers} - H10K 2102/3026: {Top emission} - H10W 72/923: {Bond pads having multiple stacked layers} - H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES - H10D: INORGANIC ELECTRIC SEMICONDUCTOR DEVICES - H10W: GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10 ## Abstract Disclosed is an organic light emitting display device that may include first and second pads on a pad area of a substrate, wherein the first pad includes a first bonding region and a first link region, and the second pad includes a second bonding region, a contact region, and a second link region. A first bonding electrode in the first bonding region is electrically connected to one or more signal lines in the active area of the device through contact holes in the first bonding region. A second bonding electrode is electrically connected to one or more signal lines of the device through contact holes in the contact region. The contact region is closer to the active area than the first bonding region. ## Claims ### Claim 1 A display device comprising: a substrate with an active area and a pad area; a first anode electrode in the active area of the substrate; a second anode electrode on the first anode electrode, the second anode electrode being electrically connected to the first anode electrode; an organic emitting layer on the second anode electrode; a cathode electrode on the organic emitting layer; a first auxiliary electrode in a same layer as the first anode electrode; and a second auxiliary electrode in a same layer as the second anode electrode, the second auxiliary electrode being electrically connected to the first auxiliary electrode and the cathode electrode. ### Claim 2 (depends on 1) The display device of claim 1, further comprising a planarization layer between the first anode electrode and the second anode electrode, and between the first auxiliary electrode and the second auxiliary electrode, wherein the second anode electrode is electrically connected to the first anode electrode via a first contact hole provided in the planarization layer, and the second auxiliary electrode is electrically connected to the first auxiliary electrode via a second contact hole provided in the planarization layer. ### Claim 3 (depends on 1) The display device of claim 1, wherein a width of the first auxiliary electrode is larger than a width of the first anode electrode. ### Claim 4 (depends on 1) The display device of claim 1, wherein the first auxiliary electrode is overlapped with the second anode electrode. ### Claim 5 (depends on 1) The display device of claim 1, further comprising a bank covering a lateral surface of the second auxiliary electrode to expose an upper surface of the second auxiliary electrode, and a partition on the upper surface of the second auxiliary electrode, the partition having an interval from the bank, wherein the second auxiliary electrode and the cathode electrode are electrically connected with each other through a space between the partition and the bank. ### Claim 6 (depends on 1) The display device of claim 1, wherein the first anode electrode includes a first lower anode electrode, a first upper anode electrode on the first lower anode electrode, and a first cover anode electrode covering upper and lateral surfaces of the first upper anode electrode, wherein the first upper anode electrode is formed of a metal material whose resistance is lower than that in each of the first lower anode electrode and the first cover anode electrode, and wherein an oxidation degree of each of the first lower anode electrode and the first cover anode electrode is lower than an oxidation degree of the first upper anode electrode. ### Claim 7 (depends on 1) The display device of claim 1, wherein the second anode electrode includes a second lower anode electrode, a second central anode electrode on the second lower anode electrode, and a second upper anode electrode on the second central anode electrode, wherein the second central anode electrode is formed of a metal material whose resistance is lower than that in each of the second lower anode electrode and the second upper anode electrode, and wherein an oxidation degree of each of the second lower anode electrode and the second upper anode electrode is lower than an oxidation degree of the second central anode electrode. ### Claim 8 (depends on 1) The display device of claim 1, wherein the first auxiliary electrode is formed of the same material as the first anode electrode, and the second auxiliary electrode is formed of the same material as the second anode electrode. ### Claim 9 (depends on 1) The display device of claim 1, further comprising: a first signal line and a second signal line in the active area; and a first pad in the pad area and connected to the first signal line, wherein the first pad comprises: a link region electrically connected to the first signal line; and a first bonding region having a first bonding electrode for bonding to an external circuit, the first bonding region including one or more first contact holes through which the first bonding electrode is electrically connected to the link region; and a second pad in the pad area and connected to the second signal line, wherein the second pad comprises: a second bonding region having a second bonding electrode for bonding to the external circuit; and a contact region electrically connected with the second bonding region, the contact region having one or more second contact holes through which the second bonding electrode is electrically connected to the second signal line, the contact region being closer to the active area than the first bonding region. ### Claim 10 (depends on 9) The display device of claim 9, wherein a width of the first bonding region of the first pad is greater than a width of the contact region of the second pad. ### Claim 11 (depends on 9) The display device of claim 9, wherein a number of the first contact holes in the first bonding region is greater than a number of the second contact holes in the contact region of the second pad. ### Claim 12 (depends on 9) The display device of claim 9, wherein a width of the second bonding region in the second pad is smaller than a width of the contact region in the second pad. ### Claim 13 (depends on 9) The display device of claim 9, wherein a width of the second bonding region in the second pad is greater than a width of the link region in the first pad. ### Claim 14 (depends on 9) The display device of claim 9, wherein the cross-sectional structure of the first bonding region is substantially identical to a cross-sectional structure of the contact region. ### Claim 15 (depends on 9) The display device of claim 9, wherein the second bonding electrode is on an insulating layer having the one or more second contact holes, and the second bonding electrode is electrically connected to the second signal line through the one or more second contact holes in the insulating layer. ### Claim 16 (depends on 9) The display device of claim 9, further comprising a short preventing layer covering the contact region of the second pad. ### Claim 17 (depends on 9) The display device of claim 9, wherein the second pad further comprises: a bridge region electrically connecting the second bonding region and the contact region. ### Claim 18 (depends on 17) The display device of claim 17, wherein a width of the bridge region is smaller than a width of the second bonding region and a width of the contact region. ### Claim 19 (depends on 9) The display device of claim 9, further comprising a thin film transistor having an active layer, a gate electrode, a source electrode, and a drain electrode, wherein at least one of the contact region of the second pad or the first bonding region of the first pad comprises: a first signal pad in a same layer as the gate electrode; a second signal pad in a same layer as the source electrode and the drain electrode, the second signal pad in the one or more second contact holes; and a pad electrode in a same layer as the first anode electrode or the second anode electrode. ### Claim 20 (depends on 19) The display device of claim 19, wherein the second signal pad comprises a lower signal pad and an upper signal pad on the lower signal pad, the lower signal pad having a lower oxidation degree than the upper signal pad, and the upper signal pad having a lower resistance than the lower signal pad, and wherein the pad electrode comprises a first layer, a second layer on the first layer, and a third layer on the second layer, the first layer and the third layer having a lower oxidation degree than the second layer, and the second layer having a lower resistance than the first layer and the third layer.