# US 2014/0153266 A1 · Display device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0153266 A1 - Document ID: US20140153266A1 - Status: Published application - Kind: A1 - Application number: 13/919,033 - Filed: 2013-06-17 - Published: 2014-06-05 - Earliest claimed: 2012-12-04 - Assignees: Samsung Display Co., Ltd. - Inventors: Hyeong-Gwon KIM - Web page: https://patentgrep.com/patent/US20140153266A1 ## CPC - H04M 1/0268: {including a flexible display panel} - G09F 9/301: {flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED} - H04M 1/0277: {for a printed circuit board assembly} - H05K 1/118: {specially for flexible printed circuits, e.g. using folded portions} - H05K 1/147: {at least one of the printed circuits being bent or folded, e.g. by using a flexible printed circuit (H05K1/148 takes precedence)} - H05K 1/185: associated with components encapsulated in the insulating substrate of the PCBs; associated with components incorporated in internal layers of multilayer circuit boards - H05K 3/4691: {Rigid-flexible multilayer circuits comprising rigid and flexible layers, e.g. having in the bending regions only flexible layers} - H05K 2201/05: Flexible printed circuits [FPCs] - H05K 2201/10: Details of components or other objects attached to or integrated in a printed circuit board - H05K 2201/10681: Tape Carrier Package [TCP]; Flexible sheet connector - H04M: TELEPHONIC COMMUNICATION (circuits for controlling other apparatus via a telephone cable and not involving telephone switching apparatus G08) - G09F: DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS - H05K: PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS ## Abstract A display device includes a flexible display panel for displaying an image, and a printed circuit board electrically connected with the flexible display panel through a circuit film. The printed circuit board may include a plurality of boards in a stack, the boards being respectively provided with integrated circuits, driving chips, and circuit wires, and a conducting portion connecting circuit wires of at least two boards among the plurality of boards. ## Claims ### Claim 1 A display device, comprising: a flexible display panel for displaying an image; and a printed circuit board electrically connected with the flexible display panel through a circuit film, wherein the printed circuit board includes: a plurality of boards in a stack, the boards being respectively provided with integrated circuits, driving chips, and circuit wires, and a conducting portion connecting circuit wires of at least two boards among the plurality of boards. ### Claim 2 (depends on 1) The display device as claimed in claim 1, wherein the conducting portion includes: a conductive filler penetrating one of the plurality of boards, a wiring layer formed on the conductive filler, and a conductive member provided between a circuit wire formed in another board among the plurality of boards and the wiring layer. ### Claim 3 (depends on 2) The display device as claimed in claim 2, wherein the conductive filler and the conductive member are provided in plural in a thickness direction of the printed circuit board, and a plurality of the conducting portions connect circuit wires provided in three or more boards among the plurality of boards. ### Claim 4 (depends on 2) The display device as claimed in claim 2, wherein the conductive member is formed of an anisotropic conductive film. ### Claim 5 (depends on 1) The display device as claimed in claim 1, wherein the printed circuit board includes an insulation filler filling a space between two neighboring boards among the plurality of boards. ### Claim 6 (depends on 1) The display device as claimed in claim 1, wherein the two outermost boards of the plurality of boards have the integrated circuit and the driving chip at a single side that faces an inner side of the printed circuit board, and other boards among the plurality of boards have the integrated circuit and the driving chip at any side thereof. ### Claim 7 (depends on 6) The display device as claimed in claim 6, wherein two neighboring boards among the plurality of boards have the integrated circuit and the driving chip at sides that face each other, and the integrated circuit and the driving chip of one of the two neighboring boards are formed in a location that is different from a location of the integrated circuit and the driving chip of the other of the two neighboring boards. ### Claim 8 (depends on 6) The display device as claimed in claim 6, wherein the printed circuit board includes a connection board disposed as one of the outermost boards among the plurality of boards, and the connection board has a plurality of pad electrodes for connection with the circuit film and a connector for receiving an external signal. ### Claim 9 (depends on 8) The display device as claimed in claim 8, wherein the connection board has a plurality of circuit wires connected with the circuit wires of other boards among the plurality of boards in addition to the circuit wire formed at the side that faces the inner side of the printed circuit board. ### Claim 10 (depends on 9) The display device as claimed in claim 9, wherein the plurality of pad electrodes are formed at an outer side of the connection board, and the plurality of circuit wires formed in the connection board are respectively connected to the plurality of pad electrodes by a conductive filler penetrating the connection board. ### Claim 11 (depends on 1) The display device as claimed in claim 1, wherein the integrated circuit includes one or more of a timing controller, a power management, a DC-DC converter, a level shifter, an EEPROM, or a gamma IC, and the driving chip includes one or more of a resistor, an inductor, or a capacitor. ### Claim 12 (depends on 1) The display device as claimed in claim 1, wherein: the flexible display panel has a display side, the printed circuit board is disposed overlapping the flexible display panel at a side opposite of the display side, and the circuit film is bent toward the opposite side of the flexible display panel. ### Claim 13 (depends on 1) The display device as claimed in claim 1, wherein the flexible display panel is an organic light emitting display panel that includes an organic light emitting diode.