# US 11,444,066 B2 · Display apparatus and manufacturing method thereof > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,444,066 B2 - Document ID: US11444066B2 - Status: Granted - Kind: B2 - Application number: 16/984,216 - Filed: 2020-08-04 - Published: 2021-02-11 - Granted: 2022-09-13 - Earliest claimed: 2019-08-09 - Assignees: Samsung Electronics Co., Ltd. - Applicants: Samsung Electronics Co., Ltd. - Inventors: Youngki Jung; Jihoon Kang; Jinho Kim; Sangmin Shin - Web page: https://patentgrep.com/patent/US11444066B2 ## CPC - H10W 90/00: Package configurations - 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 3/3233: with pixel circuitry controlling the current through the light-emitting element - H10H 20/01: Manufacture or treatment - H10P 74/232: {comprising connection or disconnection of parts of a device in response to a measurement} - G01R 31/2635: {Testing light-emitting diodes, laser diodes or photodiodes} - G09G 2300/0804: Sub-multiplexed active matrix panel, i.e. wherein one active driving circuit is used at pixel level for multiple image producing elements - G09G 2310/0297: Special arrangements with multiplexing or demultiplexing of display data in the drivers for data electrodes, in a pre-processing circuitry delivering display data to said drivers or in the matrix panel, e.g. multiplexing plural data signals to one D/A converter or demultiplexing the D/A converter output to multiple columns - G09G 2330/08: Fault-tolerant or redundant circuits, or circuits in which repair of defects is prepared - G09G 2330/10: Dealing with defective pixels - H10H 20/0364: {of interconnections} - H10H 20/857: Interconnections, e.g. lead-frames, bond wires or solder balls - H10W 72/07332: {Compression bonding, e.g. thermocompression bonding} - H10W 72/07336: {Soldering or alloying} - H10W 72/074: {of anisotropic conductive adhesives} - H10W: GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10 - 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) - H10H: INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS - H10P: GENERIC PROCESSES OR APPARATUS FOR THE MANUFACTURE OR TREATMENT OF DEVICES COVERED BY CLASS H10 - G01R: MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES (indicating correct tuning of resonant circuits H03J3/12) ## Abstract A display apparatus is provided. The display apparatus includes a plurality of anode pads disposed on a substrate and spaced apart from each other along a first direction; a cathode pad disposed on the substrate and spaced apart from the plurality of anode pads along a second direction that crosses the first direction; a plurality of repair anode pads disposed on the substrate, spaced apart from each other along the first direction, and spaced apart from the plurality of anode pads and the cathode pad along the second direction; and a plurality of light emitting diodes (LEDs) disposed on the substrate and spaced apart from each other along the first direction, each of the plurality of LEDs including an anode that is electrically connected to a corresponding anode pad from among the plurality of anode pads and a cathode that is electrically connected to the cathode pad. ## Claims ### Claim 1 A display apparatus comprising: a substrate; a plurality of light emitting diodes (LEDs) disposed on the substrate to form a pixel, and spaced apart from each other along a width direction of one of the plurality of LEDs; a plurality of anode pads disposed on the substrate and spaced apart from each other along the width direction; at least one cathode pad disposed on the substrate and spaced apart from the plurality of anode pads along a length direction that crosses the width direction; a plurality of repair anode pads disposed on the substrate, spaced apart from each other along the width direction, and spaced apart from the plurality of anode pads and the at least one cathode pad along the length direction; and wherein each of the plurality of LEDs comprises an anode that is electrically connected to a corresponding anode pad from among the plurality of anode pads and a cathode that is electrically connected to the at least one cathode pad, wherein the anode is formed on one end of an LED of the plurality of LEDs and the cathode is formed on the other end of the LED of the plurality of LEDs in the length direction, and wherein the at least one cathode pad is interposed between the plurality of anode pads and the plurality of repair anode pads. ### Claim 2 (depends on 1) The display apparatus of claim 1, wherein the at least one cathode pad comprises a single cathode pad commonly connected to the cathode of each of the plurality of LEDs. ### Claim 3 (depends on 1) The display apparatus of claim 1, wherein the at least one cathode pad comprises a shared cathode pad commonly connected to the cathode of at least two of the plurality of LEDs. ### Claim 4 (depends on 3) The display apparatus of claim 3, wherein the plurality of LEDs comprises a red LED, a green LED and a blue LED, wherein the plurality of anode pads comprises a first anode pad corresponding to the red LED, a second anode pad corresponding to the green LED and a third anode pad corresponding to the blue LED, wherein the plurality of repair anode pads comprises a first repair anode pad corresponding to the red LED, a second repair anode pad corresponding to the green LED and a third repair anode pad corresponding to the blue LED, and wherein the at least one cathode pad comprises: a first cathode pad electrically connected to the green LED and the blue LED, interposed between the second anode pad and the second repair anode pad, and interposed between the third anode pad and the third repair anode pad; and a second cathode pad electrically connected to the cathode of the red LED, and interposed between the first anode pad and the first repair anode pad. ### Claim 5 (depends on 4) The display apparatus of claim 4, wherein a first reference voltage is provided to the first cathode pad and a second reference voltage, which is higher than the first reference voltage, is provided to the second cathode pad. ### Claim 6 (depends on 4) The display apparatus of claim 4, further comprising: an upper insulating layer disposed on the plurality of anode pads and the plurality of repair anode pads, wherein a connection hole is formed through the upper insulating layer to expose the plurality of anode pads and the plurality of repair anode pads. ### Claim 7 (depends on 6) The display apparatus of claim 6, wherein the anode of each of the plurality of LEDs is electrically connected to the corresponding anode pad exposed through the connection hole. ### Claim 8 The display apparatus of 6, further comprising: a repair LED corresponding to a defective LED from among the red LED, the green LED and the blue LED, wherein a repair anode pad, from among the first repair anode pad, the second repair anode pad and the third repair anode pad corresponding to the defective LED, from among the plurality of repair anode pads, is electrically connected to a part of the repair anode pad which is exposed through the connection hole. ### Claim 9 (depends on 1) The display apparatus of claim 1, wherein each of the plurality of LEDs is configured to emit light toward away from the substrate. ### Claim 10 A display apparatus comprising: a substrate; a plurality of light emitting diodes (LEDs) disposed on the substrate to form a pixel, and spaced apart from each other along a width direction of one of the plurality of LEDs; a plurality of anode pads disposed on the substrate and spaced apart from each other along the width direction; at least one cathode pad disposed on the substrate and spaced apart from the plurality of anode pads along a length direction that crosses the width direction; and at least one repair cathode pad disposed on the substrate and spaced apart front the plurality of anode pads and the at least one cathode pad along the length direction; wherein each of the plurality of LEDs comprising an anode that is electrically connected to a corresponding anode pad from among the plurality of anode pads and a cathode that is electrically connected to the at least one cathode pad, wherein the anode is formed on one end of an LED of the plurality of LEDs and the cathode is formed on the other end of the LED of the plurality of LEDs in the length direction, and wherein the plurality of anode pads is interposed between the at least one cathode pad and the at least one repair cathode pad. ### Claim 11 (depends on 10) The display apparatus of claim 10, further comprising: a plurality of driving transistors disposed on an upper side of the substrate and corresponding to the plurality of LEDs, respectively, wherein each of the plurality of anode pads is electrically connected to a drain electrode of a corresponding driving transistor from among the plurality of driving transistors, and wherein the at least one cathode pad is connected to a reference voltage. ### Claim 12 (depends on 10) The display apparatus of claim 10, further comprising: an upper insulating layer disposed on the plurality of anode pads, the at least one cathode pad and the at least one repair cathode pad, wherein a connection hole is formed through the upper insulating layer to expose the plurality of anode pads, the at least one cathode pad, and the at least one repair cathode pad. ### Claim 13 (depends on 12) The display apparatus of claim 12, wherein the anode of each of the plurality of LEDs is electrically connected to the plurality of anode pads exposed through the connection hole, and wherein the cathode of each of the plurality of LEDs is electrically connected to the at least one cathode pad exposed through the connection hole. ### Claim 14 (depends on 13) The display apparatus of claim 13, further comprising a repair LED corresponding to a defective LED, wherein a cathode of the repair LED is electrically connected to the at least one repair cathode pad, which is exposed through the connection hole, corresponding to the defective LED, and wherein an anode of the repair LED is electrically connected to the corresponding anode pad, which is exposed through the connection hole, from among the plurality of anode pads that corresponds to the defective LED. ### Claim 15 (depends on 12) The display apparatus of claim 12, further comprising a plurality of driving transistors disposed on an upper side of the substrate and corresponding to the plurality of LEDs, respectively, wherein the at least one cathode pad is electrically connected to a drain electrode of each of the plurality of driving transistors, and wherein the plurality of anode pads is connected to a power voltage. ### Claim 16 (depends on 15) The display apparatus of claim 15, wherein the power voltage comprises a first power voltage and a second power voltage that is lower than the first power voltage, wherein the plurality of LEDs comprises a red LED, a green LED and a blue LED, wherein the first power voltage is provided to the anode of the green LED and the anode of the blue LED, and wherein the second power voltage is provided to the anode of the red LED.