# US 12,114,420 B2 · Display module having polygon shaped flexible circuit board > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,114,420 B2 - Document ID: US12114420B2 - Status: Granted - Kind: B2 - Application number: 17/889,092 - Filed: 2022-08-16 - Published: 2024-01-18 - Granted: 2024-10-08 - Earliest claimed: 2022-07-18 - Assignees: Dell Products L.P. - Applicants: Dell Products L.P. - Inventors: Tsung-Chin Cheng; Chin-Chung Wu; Hong-Ji Huang - Web page: https://patentgrep.com/patent/US12114420B2 ## CPC - H05K 1/023: {using auxiliary mounted passive components or auxiliary substances (printed passive components H05K1/16)} - G02F 1/13306: {Circuit arrangements or driving methods for the control of single liquid crystal cells (G02F1/132, G02F1/133382 take precedence)} - G02F 1/133334: {Electromagnetic shields} - G02F 1/13452: {Conductors connecting driver circuitry and terminals of panels} - G06F 1/1637: {Details related to the display arrangement, including those related to the mounting of the display in the housing} - H05K 1/14: Structural association of two or more printed circuits (providing electric connection to or between printed circuits H05K1/11, H01R12/00) - 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 9/0024: {Shield cases mounted on a PCB, e.g. cans or caps or conformal shields} - G02F 1/133302: {Rigid substrates, e.g. inorganic substrates} - G09G 2330/06: Handling electromagnetic interferences [EMI], covering emitted as well as received electromagnetic radiation - H05K 2201/09027: Non-rectangular flat PCB, e.g. circular - H05K 2201/10136: Liquid Crystal display [LCD] - H05K: PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS - 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 - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) - 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 An LCD display module includes a polygon flexible printed circuit to produce a thinner display. The polygon flexible printed circuit connects a driver integrated circuit to a printed circuit board assembly and a glass substrate. The polygon flexible printed circuit has a narrow minor end connected to the glass substrate and a wider major end connected to the printed circuit board assembly. Because the polygon flexible printed circuit has different end widths, the polygon flexible printed circuit permits reduced spacing of electronic components in proximity of the narrower minor end. The LCD display module also includes a shielding can in physical communication with the printed circuit board assembly to reduce electromagnetic interference between the printed circuit board and the polygon flexible printed circuit. ## Claims ### Claim 1 A liquid crystal display (LCD) module, comprising: a liquid crystal material sandwiched between glass substrates; a printed circuit board assembly; first and second polygon flexible printed circuits, the first polygon flexible printed circuit including a driver integrated circuit, the first polygon flexible printed circuit having a minor end connected to one of the glass substrates and a major end connected to the printed circuit board assembly; and a shielding can in physical communication with the printed circuit board assembly, the shielding can including a minor end and a major end, wherein the minor end of the shielding can is located in between the major end of both of the first and second polygon flexible printed circuits and the major end of the shielding can is located in between the minor ends of both of the first and second polygon flexible printed circuits, the shielding can to reduce electromagnetic interference between the printed circuit board and the first polygon flexible printed circuit, wherein the shielding can covers multiple circuitry components of the printed circuit board assembly; wherein the printed circuit board assembly controls the driver integrated circuit via the first polygon flexible printed circuit. ### Claim 2 (depends on 1) The LCD module of claim 1, wherein the minor end of the first polygon flexible printed circuit has a shorter width than the major end. ### Claim 3 (depends on 1) The LCD module of claim 1, wherein the first polygon flexible printed circuit comprises a signal routing region connected to the printed circuit board assembly. ### Claim 4 (depends on 1) The LCD module of claim 1, wherein the first polygon flexible printed circuit comprises a signal routing region connected to the driver integrated circuit. ### Claim 5 (depends on 1) The LCD module of claim 1, wherein the first polygon flexible printed circuit comprises a conductive trace connected from the printed circuit board assembly to the driver integrated circuit. ### Claim 6 (depends on 1) The LCD module of claim 1, wherein the printed circuit board assembly includes a notch structure to accommodate the driver integrated circuit of the first polygon flexible printed circuit. ### Claim 7 (depends on 1) The LCD module of claim 1, wherein the first polygon flexible printed circuit has a bonding region along the minor end. ### Claim 8 (depends on 1) The LCD module of claim 1, wherein the minor end of the first polygon flexible printed circuit is bonded to one of the glass substrates. ### Claim 9 An information handling system, comprising: a processor; and a liquid crystal display (LCD) module interfacing with the hardware processor, the LCD module including: a liquid crystal material disposed between glass substrates; a printed circuit board assembly; first and second polygon flexible printed circuits, the first polygon flexible printed circuit including a driver integrated circuit, the first polygon flexible printed circuit having a minor end connected to one of the glass substrates and a major end connected to the printed circuit board assembly; and a shielding can in physical communication with the printed circuit board assembly, the shielding can including a minor end and a major end, wherein the minor end of the shielding can is located in between the major end of both of the first and second polygon flexible printed circuits and the major end of the shielding can is located in between the minor ends of both of the first and second polygon flexible printed circuits, the shielding can to reduce electromagnetic interference between the printed circuit board and the first polygon flexible printed circuit, wherein the shielding can covers multiple circuitry components of the printed circuit board assembly; wherein the printed circuit board assembly controls the driver integrated circuit via the first polygon flexible printed circuit. ### Claim 10 (depends on 9) The information handling system of claim 9, wherein the minor end of the first polygon flexible printed circuit has a shorter width than the major end. ### Claim 11 (depends on 9) The information handling system of claim 9, wherein the printed circuit board assembly includes a notch structure to accommodate the driver integrated circuit of the first polygon flexible printed circuit. ### Claim 12 (depends on 9) The information handling system of claim 9, wherein the first polygon flexible printed circuit comprises a signal routing region connected to the driver integrated circuit. ### Claim 13 (depends on 9) The information handling system of claim 9, wherein the first polygon flexible printed circuit comprises a conductive trace connected from the printed circuit board assembly to the driver integrated circuit. ### Claim 14 (depends on 9) The information handling system of claim 9, wherein the first polygon flexible printed circuit has a generally trapezoidal exterior shape. ### Claim 15 (depends on 9) The information handling system of claim 9, wherein the first polygon flexible printed circuit has a bonding region along the minor end. ### Claim 16 (depends on 9) The information handling system of claim 9, wherein the minor end of the first polygon flexible printed circuit is bonded to one of the glass substrates. ### Claim 17 An information handling system, comprising: a processor; and a liquid crystal display (LCD) module interfacing with the hardware processor, the LCD module including: a liquid crystal material disposed between glass substrates; a printed circuit board assembly; first and second polygon flexible printed circuits, the first polygon flexible printed circuit including a driver integrated circuit, the first polygon flexible printed circuit having a minor end connected to one of the glass substrates and a major end connected to the printed circuit board assembly; and a shielding can in physical communication with the printed circuit board assembly, the shielding can including a minor end and a major end, wherein the minor end of the shielding can is located in between the major end of both of the first and second polygon flexible printed circuits and the major end of the shielding can is located in between the minor ends of both of the first and second polygon flexible printed circuits, the shielding can to reduce electromagnetic interference between the printed circuit board and the first polygon flexible printed circuit, wherein the shielding can covers multiple circuitry components of the printed circuit board assembly; wherein the printed circuit board assembly controls the driver integrated circuit via the first polygon flexible printed circuit; wherein the minor end of the first polygon flexible printed circuit has a shorter width than the major end; and wherein the first polygon flexible printed circuit comprises a signal routing region connected to the printed circuit board assembly. ### Claim 18 (depends on 17) The information handling system of claim 17, wherein the first polygon flexible printed circuit comprises a signal routing region connected to the driver integrated circuit. ### Claim 19 (depends on 17) The information handling system of claim 17, wherein the printed circuit board assembly includes a notch structure to accommodate the driver integrated circuit of the first polygon flexible printed circuit. ### Claim 20 (depends on 17) The information handling system of claim 17, wherein the first polygon flexible printed circuit has a generally trapezoidal exterior shape.