# US 11,309,380 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 11,309,380 B2 - Document ID: US11309380B2 - Status: Granted - Kind: B2 - Application number: 16/880,459 - Filed: 2020-05-21 - Published: 2021-03-25 - Granted: 2022-04-19 - Earliest claimed: 2019-09-25 - Assignees: Samsung Display Co., Ltd. - Applicants: Samsung Display Co., LTD. - Inventors: Ki Wook Kim; Joong-Soo Moon - Web page: https://patentgrep.com/patent/US11309380B2 ## CPC - 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)} - H10K 59/131: Interconnections, e.g. wiring lines or terminals - G02F 1/13452: {Conductors connecting driver circuitry and terminals of panels} - G02F 1/13458: {Terminal pads} - G09G 3/20: for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix {no fixed position being assigned to or needed to be assigned to the individual characters or partial characters} - H05K 1/0268: {for electrical inspection or testing} - H05K 1/189: characterised by the use of flexible or folded printed circuits - H10K 59/121: characterised by the geometry or disposition of pixel elements - G02F 1/136254: {Checking; Testing} - G02F 1/13629: {Multilayer wirings} - G09G 2300/0426: Layout of electrodes and connections - H05K 2201/10128: Display - 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 - G02F: OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS - H05K: PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS ## Abstract A display panel includes pixels and a driver IC pad area; a driver IC on the driver IC pad area of the display panel; first input pads and first output pads that overlap the driver IC pad area; a flexible printed circuit adjacent to the driver IC pad area on the display panel; first output test pads that overlap the flexible printed circuit, and are respectively extended to the first output pads; and first input extending wires that overlap the flexible printed circuit, are respectively extended to the first input pads, and are between the first output test pads. ## Claims ### Claim 1 A display device comprising: a display panel including pixels and a driver IC pad area; a driver IC disposed on the driver IC pad area of the display panel; first input pads and first output pads that overlap the driver IC pad area; a flexible printed circuit disposed adjacent to the driver IC pad area on the display panel; first output test pads that overlap the flexible printed circuit, and are respectively connected to the first output pads; and first input extending wires that overlap the flexible printed circuit, are respectively extended to the first input pads, and are disposed between the first output test pads. ### Claim 2 (depends on 1) The display device of claim 1, further comprising second input pads and second output pads that overlap the driver IC pad area, wherein the first input pads and the second input pads are symmetric with respect to an imaginary line disposed between the first input pads and the second input pads, and the first output pads and the second output pads are symmetric with respect to an imaginary line disposed between the first output pads and the second output pads. ### Claim 3 (depends on 2) The display device of claim 2, wherein the first input pads and the second input pads are linearly arranged and adjacent to the flexible printed circuit, and the first output pads and the second output pads are linearly arranged at a distance from the first input pads and the second input pads. ### Claim 4 (depends on 2) The display device of claim 2, comprising: second output test pads that overlap the flexible printed circuit, and are respectively connected to the second output pads; and second input extending wires that overlap the flexible printed circuit, and are extended to the second input pads and disposed between the second output test pads. ### Claim 5 (depends on 4) The display device of claim 4, further comprising: first output extending wires that are respectively connected to the first output pads and the first output test pads; and second output extending wires that are respectively connected to the second output pads and the second output test pads. ### Claim 6 (depends on 2) The display device of claim 2, comprising: second input test pads that overlap the flexible printed circuit, and are respectively connected to the second input pads; and second output extending wires that overlap the flexible printed circuit, and are respectively extended to the second output pads and are disposed between the second input test pads. ### Claim 7 (depends on 6) The display device of claim 6, further comprising: first output extending wires that are respectively connected to the first output pads and the first output test pads; and second input extending wires that are respectively connected to the second input pads and the second input test pads. ### Claim 8 (depends on 1) The display device of claim 1, wherein a constant voltage is applied to the first output test pads. ### Claim 9 A display device comprising: a display panel including pixels; a driver IC pad area including a drive IC disposed on the display panel; first input pads and first output pads that overlap the driver IC pad area; a flexible printed circuit disposed adjacent to the driver IC pad area on the display panel; first input test pads that overlap the flexible printed circuit, and are respectively connected to the first input pads; and first output extending wires that overlap the flexible printed circuit, and are respectively connected to the first output pads and are disposed between the first input test pads. ### Claim 10 (depends on 9) The display device of claim 9, further comprising second input pads and second output pads that overlap the driver IC pad area, wherein the first input pads and the second input pads are symmetric with respect to an imaginary line disposed between the first input pads and the second input pads, and the first output pads and the second output pads are symmetric with respect to an imaginary line disposed between the first output pads and the second output pads. ### Claim 11 (depends on 10) The display device of claim 10, wherein the first input pads and the second input pads are disposed linearly and adjacent to the flexible printed circuit, and the first output pads and the second output pads are linearly arranged at a distance from the first input pads and the second input pads. ### Claim 12 (depends on 10) The display device of claim 10, comprising: second input test pads that overlap the flexible printed circuit, and are respectively connected to the second input pads; and second output extending wires that overlap the flexible printed circuit, and are respectively extended to the second output pads and disposed between the second input test pads. ### Claim 13 (depends on 12) The display device of claim 12, further comprising: first input extending wires that are respectively connected to the first input pads and the first input test pads; and second input extending wires that are respectively connected to the second input pads and the second input test pads. ### Claim 14 (depends on 10) The display device of claim 10, comprising: second output test pads that overlap the flexible printed circuit, and are respectively connected to the second output pads; and second input extending wires that overlap the flexible printed circuit, and are respectively extended to the second input pads and are disposed between the second output test pads. ### Claim 15 (depends on 14) The display device of claim 14, further comprising: first input extending wires that are respectively connected to the first input pads and the first input test pads; and second output extending wires that are respectively connected to the second output pads and the second output test pads. ### Claim 16 (depends on 9) The display device of claim 9, wherein a constant voltage is applied to the first input test pads. ### Claim 17 A display device comprising: a display panel including pixels; first pads disposed on the display panel; second pads disposed apart from the first pads on the display panel; first test pads respectively connecting to the first pads; second test pads respectively connecting to the second pads; first extending wires connecting to the first pads and the first test pads; and second extending wires connecting to the second pads and the second test pads, wherein the second test pads are disposed at an edge of the display panel, and the second extending wires are disposed between the first test pads. ### Claim 18 (depends on 17) The display device of claim 17, wherein the first test pads are linearly arranged along a first direction, and the second test pads are linearly arranged along the first direction at a distance from the first test pads. ### Claim 19 (depends on 18) The display device of claim 18, wherein the display panel includes a cutting line between the first test pads and the second test pads. ### Claim 20 (depends on 18) The display device of claim 18, wherein the first test pads are symmetric with respect to an imaginary line that extends in a second direction perpendicular to the first direction, and the second test pads are symmetrical with respect to the imaginary line. ### Claim 21 (depends on 18) The display device of claim 18, wherein the first pads are linearly arranged along the first direction, and the second pads are linearly arranged along the first direction at a distance from the first pads. ### Claim 22 (depends on 21) The display device of claim 21, wherein the first pads are symmetric with respect to an imaginary line that extends in a second direction perpendicular to the first direction, and the second pads are symmetric with respect to the imaginary line.