# US 10,504,424 B2 · Organic light-emitting display panel and 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 10,504,424 B2 - Document ID: US10504424B2 - Status: Granted - Kind: B2 - Application number: 15/833,036 - Filed: 2017-12-06 - Published: 2018-06-21 - Granted: 2019-12-10 - Earliest claimed: 2016-12-21 - Assignees: LG Display Co., Ltd. - Applicants: LG Display Co., Ltd. - Inventors: YuSok Lim - Web page: https://patentgrep.com/patent/US10504424B2 ## CPC - G09G 3/3225: using an active matrix - G09G 3/006: {Electronic inspection or testing of displays and display drivers, e.g. of LED or LCD displays (testing individual LED's G01R31/2635; testing lamps G01R31/44; testing of optical features of LCD displays G02F1/1309)} - G09G 3/3208: organic, e.g. using organic light-emitting diodes [OLED] - H10K 59/131: Interconnections, e.g. wiring lines or terminals - G09G 3/3291: in which the data driver supplies a variable data voltage for setting the current through, or the voltage across, the light-emitting elements - G09G 2300/0426: Layout of electrodes and connections - G09G 2300/043: Compensation electrodes or other additional electrodes in matrix displays related to distortions or compensation signals, e.g. for modifying TFT threshold voltage in column driver - G09G 2300/0819: used for counteracting undesired variations, e.g. feedback or autozeroing - G09G 2310/0248: Precharge or discharge of column electrodes before or after applying exact column voltages - G09G 2320/0204: Compensation of DC component across the pixels in flat panels - G09G 2320/0233: Improving the luminance or brightness uniformity across the screen - G09G 2320/0242: Compensation of deficiencies in the appearance of colours - G09G 2330/12: Test circuits or failure detection circuits included in a display system, as permanent part thereof - H10D 86/441: {Interconnections, e.g. scanning lines} - H10D 86/60: wherein the TFTs are in active matrices - H10K 59/1213: {the pixel elements being TFTs} - H10K 59/35: comprising red-green-blue [RGB] subpixels - G09G: ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION (arrangements for transferring data between digital computers and displays G06F3/14; static indicating arrangements comprising an association of a number of separate sources or light control cells G09F9/00; static indicating arrangements comprising integral associations of a number of light sources H01J, H01K, H10H, H05B33/12; scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission, details thereof H04N1/00) - H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES - H10D: INORGANIC ELECTRIC SEMICONDUCTOR DEVICES ## Abstract In an organic light-emitting display panel and an organic light-emitting display device, lighting lines arranged in the organic light-emitting display panel to be used for lighting inspection are connected to portions of power lines arranged in the organic light-emitting display panel, in which a voltage drop occurs. In a display driving period, a voltage the same as a voltage applied to the power lines is applied to the lighting lines. Then, the lighting lines can be used as auxiliary power lines, so that additional lines for compensating for the voltage drop are not required. Power compensation is enabled without increasing the voltage applied to the power lines. The uniformity of images can be improved without increasing power consumption. ## Claims ### Claim 1 An organic light-emitting display device, comprising: an organic light-emitting display panel; a plurality of data lines arranged in the organic light-emitting display panel; a plurality of first power lines arranged in the organic light-emitting display panel to be parallel to the plurality of data lines; a second power line arranged along an outer peripheral portion of the organic light-emitting display panel; a lighting line arranged along the outer peripheral portion of the organic light-emitting display panel, except for a top portion of the organic light-emitting display panel; lighting transistors connected between the plurality of data lines and the lighting line, whereby the lighting line is electrically connected to the plurality of data lines through the lighting transistors; and first transistors connected between the plurality of first power lines and the lighting line, whereby the lighting line is electrically connected to the plurality of first power lines through the first transistors, wherein, in a bottom portion of the organic light-emitting display panel, the lighting line is electrically connected to the plurality of data lines and is electrically connected to the plurality of first power lines or the second power line, and wherein, in a display driving period, the lighting transistors are in an off state, and the first transistors are in an on state. ### Claim 2 (depends on 1) The organic light-emitting display device according to claim 1, further comprising a first auxiliary driving line connected to gate nodes of the first transistors, wherein a signal for turning the first transistors on is applied to the first auxiliary driving line in the display driving period. ### Claim 3 (depends on 1) The organic light-emitting display device according to claim 1, wherein a same voltage is applied to the plurality of first power lines and the lighting line in the display driving period. ### Claim 4 (depends on 1) The organic light-emitting display device according to claim 1, further comprising: a first horizontal line arranged in the top portion of the organic light-emitting display panel to connect one ends of the plurality of first power lines to each other; and a second horizontal line arranged in the bottom portion of the organic light-emitting display panel to connect the other ends of the plurality of first power lines to each other, wherein the lighting line is connected to nodes at which the plurality of first power lines and the second horizontal line are connected. ### Claim 5 An organic light-emitting display device comprising: an organic light-emitting display panel; a plurality of data lines arranged in the organic light-emitting display panel; a plurality of first power lines arranged in the organic light-emitting display panel to be parallel to the plurality of data lines; a second power line arranged along an outer peripheral portion of the organic light-emitting display panel; a lighting line arranged along the outer peripheral portion of the organic light-emitting display panel, except for a top portion of the organic light-emitting display panel; lighting transistors connected between the plurality of data lines and the lighting line, whereby the lighting line is electrically connected to the plurality of data lines through the lighting transistors; and a second transistor connected between the second power line and the lighting line, whereby the lighting line is electrically connected to the second power line through the second transistor, wherein, in a bottom portion of the organic light-emitting display panel, the lighting line is electrically connected to the plurality of data lines and is electrically connected to the plurality of first power lines or the second power line, and wherein a same voltage is applied to the second power line and the lighting line in a display driving period. ### Claim 6 (depends on 5) The organic light-emitting display device according to claim 5, further comprising a second auxiliary driving line connected to a gate node of the second transistor, wherein a signal for turning the second transistor on is applied to the second auxiliary driving line in the display driving period. ### Claim 7 An organic light-emitting display panel, comprising: a plurality of data lines arranged in a display area of the display panel; a plurality of first power lines arranged in the display area to be parallel to the plurality of data lines; a lighting line arranged along an outer peripheral portion of the display area, except for a top portion of the display area; lighting transistors connected between the plurality of data lines and the lighting line, whereby the lighting line is electrically connected to the plurality of data lines through the lighting transistors; first transistors connected between the plurality of first power lines and the lighting line, whereby the lighting line is electrically connected to the plurality of first power lines through the first transistors; and a first auxiliary driving line connected to gate nodes of the first transistors, wherein the lighting line is electrically connected to the plurality of data lines and the plurality of first power lines in a bottom portion of the display area, and wherein, in a display driving period, the lighting transistors are in an off state, and the first transistors are turned on by a signal applied through the first auxiliary driving line. ### Claim 8 (depends on 7) The organic light-emitting display panel according to claim 7, wherein a same voltage is applied to the plurality of first power lines and the lighting line in the display driving period. ### Claim 9 An organic light-emitting display panel, comprising: a plurality of data lines arranged in a display area of the display panel; a second power line arranged along an outer peripheral portion of the display area; a lighting line arranged along the outer peripheral portion of the display area, except for a top portion of the display area; lighting transistors connected between the plurality of data lines and the lighting line, whereby the lighting line is electrically connected to the plurality of data lines through the lighting transistors; a second transistor connected between the second power line and the lighting line, whereby the lighting line is electrically connected to the second power line through the second transistor; and a second auxiliary driving line connected to a gate node of the second transistor, wherein the lighting line is electrically connected to the plurality of data lines and the second power line in a bottom portion of the display area, and wherein, in a display driving period, the lighting transistors are in an off state, and the second transistor remains turned on by a signal applied through the second auxiliary driving line. ### Claim 10 (depends on 9) The organic light-emitting display panel according to claim 9, wherein a same voltage is applied to the second power line and the lighting line in the display driving period. ### Claim 11 (depends on 5) The organic light-emitting display device according to claim 5, wherein the lighting transistors are in an off state and the second transistor is in an on state in the display driving period.