# US 2022/0046784 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 2022/0046784 A1 - Document ID: US20220046784A1 - Status: Published application - Kind: A1 - Application number: 17/240,888 - Filed: 2021-04-26 - Published: 2022-02-10 - Earliest claimed: 2020-08-06 - Assignees: Samsung Display Co., Ltd. - Applicants: Samsung Display Co., Ltd. - Inventors: WONTAE KIM; JAE-HAN LEE - Web page: https://patentgrep.com/patent/US20220046784A1 ## CPC - 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 1/0204: {using means for thermal conduction connection in the thickness direction of the substrate (H05K1/0207 takes precedence)} - H05K 1/181: associated with surface mounted components - H05K 1/189: characterised by the use of flexible or folded printed circuits - H05K 3/323: {by applying an anisotropic conductive adhesive layer over an array of pads} - H10K 59/8794: {Arrangements for heating and cooling} - G06F 3/0412: {Digitisers structurally integrated in a display} - H05K 2201/066: Heatsink mounted on the surface of the printed circuit board [PCB] - H05K 2201/09409: Multiple rows of pads, lands, terminals or dummy patterns; Multiple rows of mounted components - H05K 2201/09445: Pads for connections not located at the edge of the PCB, e.g. for flexible circuits - H05K 2201/10128: Display - H10W 90/00: Package configurations - H05K: PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS - H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) - H10W: GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10 ## Abstract Provided is a display device including a display panel including a plurality of first pads, and a plurality of second pads spaced apart from the first pads, a first circuit board including first circuit pads respectively bonded to the first pads, a first driving chip electrically connected to the first circuit pads, and a first heat radiation member, and a second circuit board including second circuit pads respectively bonded to the second pads, and a second driving chip electrically connected to the second circuit pads, wherein the first heat radiation member overlaps the first driving chip and the second driving chip. ## Claims ### Claim 1 A display device comprising: a display panel comprising a plurality of first pads, and a plurality of second pads spaced apart from the first pads; a first circuit board comprising first circuit pads respectively bonded to the first pads, a first driving chip electrically connected to the first circuit pads, and a first heat radiation member; and a second circuit board comprising second circuit pads respectively bonded to the second pads, and a second driving chip electrically connected to the second circuit pads, wherein the first heat radiation member overlaps the first driving chip and the second driving chip. ### Claim 2 (depends on 1) The display device of claim 1, wherein the first driving chip and the first heat radiation member are on different layers, and wherein the second driving chip directly faces the first heat radiation member. ### Claim 3 (depends on 1) The display device of claim 1, wherein the first heat radiation member entirely overlaps the first driving chip and the second driving chip in a plan view, and wherein the second driving chip contacts the first heat radiation member. ### Claim 4 (depends on 1) The display device of claim 1, wherein the second circuit board further comprises a second heat radiation member at a layer that is different from the second driving chip, and entirely overlapping the second driving chip. ### Claim 5 (depends on 4) The display device of claim 4, wherein the second driving chip is between the first heat radiation member and the second heat radiation member. ### Claim 6 (depends on 4) The display device of claim 4, wherein the first heat radiation member has a planar area that is greater than that of the second heat radiation member, and wherein the second heat radiation member entirely overlaps the first heat radiation member. ### Claim 7 (depends on 1) The display device of claim 1, wherein the first circuit board further comprises a first substrate having a first bottom surface facing the display panel, and a first top surface opposite to the first bottom surface, wherein the first circuit pads and the first driving chip are on the first bottom surface, and wherein the first heat radiation member is on the first top surface. ### Claim 8 (depends on 7) The display device of claim 7, wherein the second circuit board further comprises a second substrate having a second bottom surface facing the first circuit board, and a second top surface opposite to the second bottom surface, and wherein the second circuit pads and the second driving chip are on the second bottom surface. ### Claim 9 (depends on 8) The display device of claim 8, wherein the second circuit board further comprises a second heat radiation member that overlaps the second driving chip, and that is on the second top surface, and wherein the second driving chip is between the first heat radiation member and the second heat radiation member. ### Claim 10 (depends on 1) The display device of claim 1, wherein the first heat radiation member defines at least one opening that does not overlap the first driving chip or the second driving chip. ### Claim 11 (depends on 10) The display device of claim 10, wherein the first driving chip is spaced apart from the second driving chip in one direction in a plan view, wherein the at least one opening is of a plurality of openings that are arranged in a different direction that is perpendicular to the one direction, and wherein the first heat radiation member is bent with respect to the different direction in an area in which the openings are defined. ### Claim 12 (depends on 10) The display device of claim 10, wherein the opening is defined between the first driving chip and the second driving chip in a plan view. ### Claim 13 (depends on 1) The display device of claim 1, wherein the first pads are arranged in a first row, and wherein the second pads are arranged in a second row spaced apart from the first row in one direction. ### Claim 14 (depends on 1) The display device of claim 1, wherein the first circuit board and the second circuit board are bent from one end of the display panel, and wherein the first circuit board and the second circuit board have one end facing a top surface of the display panel, on which the first pads and the second pads are located, and another end facing a bottom surface of the display panel, which is opposite to the top surface. ### Claim 15 (depends on 1) The display device of claim 1, wherein the first heat radiation member does not overlap the first circuit pads or the second circuit pads. ### Claim 16 A display device comprising: a display panel; a first circuit board comprising a first base layer having a first bottom surface and a first top surface, a first driving chip that is electrically connected to the display panel and is on the first bottom surface, and a first heat radiation member that entirely overlaps the first driving chip and is on the first top surface; and a second circuit board comprising a second base layer having a second top surface and a second bottom surface that faces the first heat radiation member, a second driving chip that is electrically connected to the display panel and is between the first heat radiation member and the second bottom surface, and a second heat radiation member that entirely overlaps the second driving chip and is on the second top surface. ### Claim 17 (depends on 16) The display device of claim 16, wherein the first heat radiation member has a planar area that is greater than that of the second heat radiation member, and wherein the first driving chip, the second driving chip, and the second heat radiation member entirely overlap the first heat radiation member. ### Claim 18 (depends on 16) The display device of claim 16, wherein the first circuit board is defined by a first portion facing a top surface of the display panel, a second portion facing a bottom surface of the display panel, and a third portion between the first portion and the second portion, and wherein the first heat radiation member and the first driving chip overlap the third portion. ### Claim 19 (depends on 16) The display device of claim 16, wherein the second heat radiation member does not overlap the first driving chip. ### Claim 20 A display device comprising: a display panel; a first circuit board comprising a first driving chip, and a heat radiation member that entirely overlaps the first driving chip; and a second circuit board on the first circuit board to cover the first driving chip and the heat radiation member, and comprising a second driving chip, wherein the heat radiation member is between the first driving chip and the second driving chip, and entirely overlaps the first driving chip and the second driving chip.