# US 10,374,026 B2 · Display device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,374,026 B2 - Document ID: US10374026B2 - Status: Granted - Kind: B2 - Application number: 15/678,918 - Filed: 2017-08-16 - Published: 2018-04-26 - Granted: 2019-08-06 - Earliest claimed: 2016-10-25 - Assignees: Samsung Display Co., Ltd. - Applicants: Samsung Display Co., Ltd. - Inventors: Kwang Sae Lee; Myeong Hee Seo; Ki Myeong Eom; Jung Bae Bae - Web page: https://patentgrep.com/patent/US10374026B2 ## CPC - H10K 59/1216: {the pixel elements being capacitors} - H10K 59/122: Pixel-defining structures or layers, e.g. banks - H10K 59/131: Interconnections, e.g. wiring lines or terminals - H10K 59/805: {Electrodes} - H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES ## Abstract A display device includes first, second, and third insulating layers sequentially disposed on a substrate, a scan line disposed on the first insulating layer, an auxiliary power source line disposed on the second insulating layer, a data line disposed on the third insulating layer, a power source line disposed on the third insulating layer, a pixel circuit unit that includes transistors connected to the scan line, the data line, and the power source line, a bridge pattern disposed on the third insulating layer, and a light emitting diode connected to the pixel circuit unit through the bridge pattern, wherein the bridge pattern and the auxiliary power source line overlap each other to form an additional capacitor with the third insulating layer interposed therebetween. ## Claims ### Claim 1 A display device, comprising: first, second, and third insulating layers sequentially disposed on a substrate; a scan line disposed on the first insulating layer; an auxiliary power source line disposed on the second insulating layer; a data line disposed on the third insulating layer; a power source line disposed on the third insulating layer; a pixel circuit unit that includes transistors connected to the scan line, the data line, and the power source line; a bridge pattern disposed on the third insulating layer; and a light emitting diode connected to the pixel circuit unit through the bridge pattern, wherein the bridge pattern and the auxiliary power source line overlap each other to form an additional capacitor with the third insulating layer interposed therebetween. ### Claim 2 (depends on 1) The display device of claim 1, wherein the auxiliary power source line extends in a first direction, the power source line extends in a second direction crossing the first direction, and the power source line is connected to the auxiliary power source line through a contact hole in the third insulating layer. ### Claim 3 (depends on 2) The display device of claim 2, wherein the bridge pattern extends in the second direction to overlap the auxiliary power source line. ### Claim 4 (depends on 1) The display device of claim 1, wherein the transistors include a driving transistor and a switching transistor, and a gate electrode of the driving transistor overlaps the auxiliary power source line to form a storage capacitor with the second insulating layer interposed therebetween. ### Claim 5 (depends on 4) The display device of claim 4, wherein the bridge pattern is disposed on a same layer as the data line and the power source line. ### Claim 6 (depends on 1) The display device of claim 1, further comprising a light emitting control line disposed on the first insulating layer and connected to the pixel circuit unit. ### Claim 7 (depends on 6) The display device of claim 6, wherein the auxiliary power source line covers the light emitting control line when viewed from a plane. ### Claim 8 (depends on 6) The display device of claim 6, further comprising: an initialization power source line disposed on the second insulating layer and connected to the pixel circuit unit. ### Claim 9 (depends on 8) The display device of claim 8, wherein the light emitting diode includes a first electrode connected to the pixel circuit unit, a light emitting layer disposed on the first electrode, and a second electrode disposed on the light emitting layer. ### Claim 10 (depends on 9) The display device of claim 9, wherein the pixel circuit unit comprises: a first transistor that includes a source electrode connected to the power source line via a fifth transistor, a drain electrode connected to the first electrode of the light emitting diode via a sixth transistor, and a gate electrode connected to a first node; a second transistor that includes a source electrode connected to the data line, a drain electrode connected to the source electrode of the first transistor, and a gate electrode connected to the scan line; a third transistor that includes a source electrode connected to the drain electrode of the first transistor, a drain electrode connected to the first node, and a gate electrode connected to the scan line; a fourth transistor that includes a source electrode connected to the initialization power source line, a drain electrode connected to the first node, and a gate electrode connected to a scan line of a previous stage; the fifth transistor that includes a source electrode connected to the power source line, a drain electrode connected to the source electrode of the first transistor, and a gate electrode connected to the light emitting control line; the sixth transistor that includes a source electrode connected to the drain electrode of the first transistor, a drain electrode connected to the first electrode of the light emitting diode, and a gate electrode connected to the light emitting control line; and a seventh transistor that includes a source electrode connected to the first electrode of the light emitting diode, a drain electrode connected to the initialization power source line, and a gate electrode connected to the scan line of the previous stage. ### Claim 11 A display device, comprising: an auxiliary power source line connected to a power source line and that extends in a first direction; a pixel circuit unit that includes transistors connected to a scan line, a data line, and the power source line; a bridge pattern connected to the pixel circuit unit with an insulating layer interposed therebetween; and a light emitting diode connected to the transistors through the bridge pattern, wherein the bridge pattern overlaps the auxiliary power source line and forms an additional capacitor with the auxiliary power source line. ### Claim 12 (depends on 11) The display device of claim 11, wherein the transistors include a driving transistor and a switching transistor, and a gate electrode of the driving transistor overlaps the auxiliary power source line to form a storage capacitor. ### Claim 13 (depends on 11) The display device of claim 11, wherein the scan line extends in the first direction, the data line extends in a second direction crossing the first direction, and the power source line extends in the second direction. ### Claim 14 (depends on 11) The display device of claim 11, further comprising a light emitting control line disposed on the first insulating layer and connected to the pixel circuit unit, wherein the auxiliary power source line covers the light emitting control line when viewed from the plane. ### Claim 15 A display device, comprising: a first transistor that includes a source electrode connected to a power source line via a fifth transistor, a drain electrode connected to a first electrode of a light emitting diode via a sixth transistor, and a gate electrode connected to a first node; a second transistor that includes a source electrode connected to a data line, a drain electrode connected to the source electrode of the first transistor, and a gate electrode connected to a scan line; a third transistor that includes a source electrode connected to the drain electrode of the first transistor, a drain electrode connected to the first node, and a gate electrode connected to the scan line; a fourth transistor that includes a source electrode connected to an initialization power source line, a drain electrode connected to the first node, and a gate electrode connected to a scan line of a previous stage; the fifth transistor that includes a source electrode connected to the power source line, a drain electrode connected to the source electrode of the first transistor, and a gate electrode connected to a light emitting control line; the sixth transistor that includes a source electrode connected to the drain electrode of the first transistor, a drain electrode connected to the first electrode of the light emitting diode, and a gate electrode connected to the light emitting control line; a seventh transistor that includes a source electrode connected to the first electrode of the light emitting diode, a drain electrode connected to the initialization power source line, and a gate electrode connected to the scan line of the previous stage; a storage capacitor connected between the power source line and the first node; and an additional capacitor connected between the power source line and the first electrode of the light emitting diode. ### Claim 16 (depends on 15) The display device of claim 15, further comprising: first, second, and third insulating layers sequentially disposed on a substrate; an auxiliary power source line disposed on the second insulating layer; and a bridge pattern disposed on the third insulating layer, wherein the scan line is disposed on the first insulating layer, the data line is disposed on the third insulating layer, the power source line is disposed on the third insulating layer, the light emitting control line is disposed on the first insulating layer, and the initialization power source line is disposed on the second insulating layer. ### Claim 17 (depends on 16) The display device of claim 16, wherein the drain electrode of the sixth transistor is connected to the first electrode of the light emitting diode through a bridge pattern, and the auxiliary power source line and the bridge pattern form the additional capacitor. ### Claim 18 (depends on 16) The display device of claim 16, wherein the first transistor is a driving transistor, and a gate electrode of the driving transistor overlaps the auxiliary power source line to form the storage capacitor. ### Claim 19 (depends on 16) The display device of claim 16, wherein the gate electrodes of the first to seventh transistors are disposed on a same layer as the scan line. ### Claim 20 (depends on 15) The display device of claim 15, wherein the light emitting diode includes the first electrode connected to the drain electrode of the first transistor, a light emitting layer disposed on the first electrode, and a second electrode disposed on the light emitting layer.