# US 10,504,449 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 10,504,449 B2 - Document ID: US10504449B2 - Status: Granted - Kind: B2 - Application number: 16/253,247 - Filed: 2019-01-22 - Published: 2019-05-23 - Granted: 2019-12-10 - Earliest claimed: 2015-04-16 - Assignees: Samsung Display Co., Ltd. - Applicants: Samsung Display Co., Ltd. - Inventors: Seung Woo Sung; Hyun-Chol Bang - Web page: https://patentgrep.com/patent/US10504449B2 ## CPC - 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 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 2300/0426: Layout of electrodes and connections - 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 2330/12: Test circuits or failure detection circuits included in a display system, as permanent part thereof - 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) ## Abstract A display device is disclosed. In one aspect, the display device includes a data driver configured to generate an output signal corresponding to input image data, a signal divider configured to divide the output signal into a plurality of data signals, and provide the data signals to a plurality of pixels and a display unit including a matrix of pixels configured to receive the data signals. The signal divider includes a first via hole formed over a first source/drain wire configured to receive a driving voltage of each pixel, a second via hole formed over a second source/drain wire of the pixel and a pixel wire electrically connecting the first and second source/drain wires to each other respectively through the first via hole and the second via hole. ## Claims ### Claim 1 A display device, comprising: a data driver configured to generate an output signal corresponding to input image data; a demultiplexer configured to divide the output signal into a plurality of data signals; a display unit including a plurality of pixels, wherein each of the pixels has a driving transistor applied to a driving voltage from a power source; a test unit connected to the driving transistor and configured to apply the data signals to the pixels according to a control signal, wherein the test unit is disposed between the demultiplexer and the display unit; a first power wire disposed between the display unit and the test unit; a second power wire disposed between the test unit and the data driver; a bridge disposed between the first power wire and the second power wire, and the driving voltage applied to the pixels though the first power wire, the second power wire, and the bridge. ### Claim 2 (depends on 1) The display device of claim 1, further comprising a first via hole and a second via hole, wherein the first power wire is connected to the bridge through the first via hole, and the second power wire is connected to the bridge through the second via hole. ### Claim 3 (depends on 2) The display device of claim 2, wherein the first power wire and the second power wire are formed of titanium and aluminum. ### Claim 4 (depends on 3) The display device of claim 3, wherein the first power wire is connected to the source electrode or the drain electrode of the driving transistor, and the source electrode and the drain electrode of the driving transistor are formed of titanium and aluminum. ### Claim 5 (depends on 4) The display device of claim 4, wherein the bridge is formed to be triple layers of a transparent electrode, a silver electrode, and a transparent electrode, and the transparent electrode is formed of an ITO layer. ### Claim 6 (depends on 5) The display device of claim 5, further comprising a third power wire formed below the bridge in a depth dimension of the display device. ### Claim 7 (depends on 6) The display device of claim 6, further comprising a planarization layer formed over a portion of the first power wire and a portion of the second power wire, wherein the bridge directly contacts the first power wire through the first via hole where the planarization layer is not formed, and wherein the bridge directly contacts the second power wire through the second via hole where the planarization is not formed. ### Claim 8 (depends on 1) The display device of claim 1, further comprising a signal controller configured to provide the control signal. ### Claim 9 A display device, comprising: a display unit including a matrix of pixels, wherein each of the pixels has a driving transistor applied a driving voltage from a power source; a data driver configured to generate an output signal corresponding to input image data; a demultiplexer configured to divide the output signal into a plurality of data signals; a test unit connected to the driving transistor and configured to apply the data signals to the pixels according to a control signal, wherein the test unit is disposed between the demultiplexer and the display unit; a first wire disposed between the display unit and the test unit; a second wire disposed between the test unit and the data driver; a third wire disposed between the first wire and the second wire, and the driving voltage applied to the pixels though the first wire, the power wire, and third wire. ### Claim 10 (depends on 9) The display device of claim 9, further comprising a fourth wire formed below the third wire in a depth dimension of the display device. ### Claim 11 (depends on 10) The display device of claim 10, further comprising: a plurality of thin-film transistors (TFT) including a TFT layer; and an insulating layer formed between the TFT layer and the first and second wires to electrically insulate the TFT layer from the first and second wires. ### Claim 12 (depends on 10) The display device of claim 10, wherein the first and second wires have substantially the same thickness. ### Claim 13 (depends on 12) The display device of claim 12, wherein the third wire is thinner than the first and second wires.