# US 2017/0256583 A1 · Display apparatus and electronic device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2017/0256583 A1 - Document ID: US20170256583A1 - Status: Published application - Kind: A1 - Application number: 15/440,329 - Filed: 2017-02-23 - Published: 2017-09-07 - Earliest claimed: 2016-03-07 - Assignees: Samsung Display Co., Ltd. - Applicants: Samsung Display Co., Ltd. - Inventors: Sukho CHOI; Euttum KIM; Joonsam KIM - Web page: https://patentgrep.com/patent/US20170256583A1 ## CPC - G02F 1/13452: {Conductors connecting driver circuitry and terminals of panels} - H05K 3/323: {by applying an anisotropic conductive adhesive layer over an array of pads} - H05K 2201/0266: Size distribution - H05K 2201/10128: Display - H10W 72/07252: {changes in structures or sizes} - H10W 72/227: {Multiple bumps having different sizes} - H10W 72/354: {comprising polymers} - H10W 74/15: on active surfaces of flip-chip devices, e.g. underfills - H10W 90/722: {between stacked chips} - H10W 90/724: {between a chip and a stacked insulating package substrate, interposer or RDL} - H10W 90/731: {of die-attach connectors} - H10W 90/734: {between a chip and a stacked insulating package substrate, interposer or RDL} - 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 - H10W: GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10 ## Abstract A display apparatus includes a display panel, a driving integrated circuit (IC), and an anisotropic conductive film. The display panel includes a non-display area adjacent to a display area and an upper substrate and a lower substrate. The driving IC overlaps the non-display area. The anisotropic conductive film attaches the driving IC to the lower substrate and includes conductive balls with diameters that gradually increase toward the display area. ## Claims ### Claim 1 A display apparatus, comprising: a display panel including a non-display area adjacent to a display area, the display panel including a display substrate; a driving integrated circuit (IC) overlapping the non-display area on a plane and on the display substrate; and an anisotropic conductive film between the display substrate and the driving IC, the anisotropic conductive film attaching the driving IC to the display substrate, wherein the anisotropic conductive film includes a first conductive ball group which includes conductive balls having diameters that gradually increase toward the display area. ### Claim 2 (depends on 1) The display apparatus as claimed in claim 1, wherein the anisotropic conductive film includes a second ball group that is farther away from the display area than the first conductive ball group. ### Claim 3 (depends on 2) The display apparatus as claimed in claim 2, wherein the second conductive ball group includes conductive balls having a same diameter. ### Claim 4 (depends on 3) The display apparatus as claimed in claim 3, wherein the driving IC includes: a driving chip to drive the display panel; output bumps between the driving chip and the display substrate and contacting the first conductive ball group; and input bumps between the driving chip and the display substrate and contacting the second conductive ball group, wherein the output bumps are in a plurality of columns in a first side direction of the driving chip and wherein the input bumps are in a line in the first side direction of the driving chip. ### Claim 5 (depends on 2) The display apparatus as claimed in claim 2, wherein the second conductive ball group includes conductive balls having diameters that gradually increase in a direction away from the display area. ### Claim 6 (depends on 5) The display apparatus as claimed in claim 5, wherein the driving IC includes: a driving chip to drive the display panel; output bumps between the driving chip and the display substrate and contacting the first conductive ball group; and input bumps between the driving chip and the display substrate and contacting the second conductive ball group, wherein the input bumps and the output bumps are arranged in a plurality of columns in a first side direction of the driving chip. ### Claim 7 (depends on 2) The display apparatus as claimed in claim 2, wherein the driving IC includes: a driving chip to drive the display panel; output bumps between the driving chip and the display substrate and contacting the first conductive ball group; and input bumps between the driving chip and the display substrate and contacting the second conductive ball group. ### Claim 8 (depends on 7) The display apparatus as claimed in claim 7, wherein a number of output bumps is greater than a number of input bumps. ### Claim 9 (depends on 7) The display apparatus as claimed in claim 7, wherein the display panel includes: output pads facing the output bumps with the first conductive ball group therebetween; and input pads facing the input bumps with the second conductive ball group therebetween. ### Claim 10 (depends on 2) The display apparatus as claimed in claim 2, wherein distances between centers of adjacent conductive balls of the second conductive ball group are equal. ### Claim 11 (depends on 1) The display apparatus as claimed in claim 1, wherein distances between centers of adjacent conductive balls of the first conductive ball group are equal. ### Claim 12 (depends on 1) The display apparatus as claimed in claim 1, wherein the anisotropic conductive film includes an adhesion resin to adhere the driving IC to the display substrate. ### Claim 13 A display apparatus, comprising: a display panel including a non-display area adjacent to a display area, the display panel including a display substrate; a flexible circuit board attached to the display substrate; a driving integrated circuit (IC) overlapping the flexible circuit board and on the flexible circuit board; and an anisotropic conductive film between the flexible circuit board and the driving IC and attaching the driving IC to the flexible circuit board, wherein the anisotropic conductive film includes a first conductive ball group and wherein the first conductive ball group includes conductive balls having diameters that gradually increase toward the display area. ### Claim 14 (depends on 13) The display apparatus as claimed in claim 13, wherein the anisotropic conductive film includes a second conductive ball group that is farther away from the display area than the first conductive ball group. ### Claim 15 (depends on 14) The display apparatus as claimed in claim 14, wherein the second conductive ball group includes conductive balls having a same diameter. ### Claim 16 (depends on 14) The display apparatus as claimed in claim 14, wherein the second conductive ball group includes conductive balls having diameters that gradually increase in a direction away from the display area. ### Claim 17 An electronic device, comprising: a base substrate; a driving integrated circuit (IC) on the base substrate; and an anisotropic conductive film between the base substrate and the driving IC and attaching the driving IC to the base substrate, wherein the driving IC includes an input to receive an external signal and an output to apply a signal to the base substrate, wherein the anisotropic conductive film includes a first conductive ball group between the output and the base substrate, and wherein the first conductive ball group includes conductive balls having diameters that gradually increase in a direction away from the input. ### Claim 18 (depends on 17) The electronic device as claimed in claim 17, wherein the anisotropic conductive film includes a second conductive ball group between the input and the base substrate. ### Claim 19 (depends on 18) The electronic device as claimed in claim 18, wherein the second conductive ball group includes conductive balls having a same diameter. ### Claim 20 (depends on 18) The electronic device as claimed in claim 18, wherein the second conductive ball group includes conductive balls having diameters that gradually increase in a direction away from the output.