# US 12,225,700 B2 · Display panel, display module and communication device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,225,700 B2 - Document ID: US12225700B2 - Status: Granted - Kind: B2 - Application number: 18/419,131 - Filed: 2024-01-22 - Published: 2024-05-16 - Granted: 2025-02-11 - Earliest claimed: 2024-01-22 - Assignees: Chengdu Boe Optoelectronics Technology Co., Ltd.; Boe Technology Group Co., Ltd. - Applicants: Chengdu Boe Optoelectronics Technology Co., Ltd.; Boe Technology Group Co., Ltd. - Inventors: Chao Wang; Binfeng Feng; Yonghui Luo; Fei Li; Yupeng Chen; Jiaxiang Wang; Zijie Zhang; Qifeng Li - Web page: https://patentgrep.com/patent/US12225700B2 ## CPC - H05K 9/0081: {Electromagnetic shielding materials, e.g. EMI, RFI shielding (H05K9/0003 takes precedence)} - H10D 86/441: {Interconnections, e.g. scanning lines} - G02F 1/133334: {Electromagnetic shields} - H01Q 1/243: {with built-in antennas} - H01Q 1/52: Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure (absorbing means H01Q17/00) - H05K 7/20963: {Heat transfer by conduction from internal heat source to heat radiating structure (H05K7/20972 takes precedence)} - H10D 86/60: wherein the TFTs are in active matrices - G02F 1/13452: {Conductors connecting driver circuitry and terminals of panels} - H05K: PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS - H10D: INORGANIC ELECTRIC SEMICONDUCTOR DEVICES - 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 - H01Q: ANTENNAS, i.e. RADIO AERIALS (radiators or antennas for microwave heating H05B6/72) ## Abstract A display panel, a display module and a manufacture method thereof, and a communication device are provided. The display panel includes a display substrate and a multiplexing circuit arranged on a first surface of the display substrate. The display panel further includes a wave-absorbing material layer arranged on a second surface of the display substrate. The wave-absorbing material layer is configured to absorb electromagnetic wave interference signals. The second surface is a surface opposite to the first surface. ## Claims ### Claim 1 A display panel, comprising a display substrate and pixel units, wherein a multiplexing circuit and the pixel units are arranged on a first surface of the display substrate, the display panel further comprises a wave-absorbing material layer arranged on a second surface of the display substrate, the wave-absorbing material layer is configured to absorb electromagnetic wave interference signals; the second surface is a surface opposite to the first surface; the multiplexing circuit comprises N input pins and M output pins, N is different from M, and N and M both are positive integers; and the input pins are connected to a driver integrated circuit and the output pins are connected to the pixel units; wherein the first surface comprises a display region and a peripheral region at a periphery of the display region; the second surface comprises a first region and a second region; an orthographic projection of the display region onto the second surface overlaps the first region, and an orthographic projection of the peripheral region onto the second surface overlaps the second region; the multiplexing circuit is arranged in the peripheral region; the display panel further comprises a first back film layer arranged in the first region of the second surface; and the wave-absorbing material layer is arranged on a side of the first back film layer that is far away from the display panel. ### Claim 2 (depends on 1) The display panel according to claim 1, further comprising a first heat-dissipation film layer, wherein the first heat-dissipation film layer and the wave-absorbing material layer are arranged at a same level, and an orthographic projection of the first heat-dissipation film layer onto the second surface and an orthographic projection of the wave-absorbing material layer onto the second surface are both in the first region. ### Claim 3 (depends on 2) The display panel according to claim 2, further comprising a second heat-dissipation film layer, wherein the second heat-dissipation film layer is arranged on a side of the first heat-dissipation film layer that is far away from the first back film layer; an orthographic projection of the second heat-dissipation film layer onto the second surface at least covers the orthographic projection of the first heat-dissipation film layer onto the second surface and the orthographic projection of the wave-absorbing material layer onto the second surface. ### Claim 4 (depends on 3) The display panel according to claim 3, wherein a thickness of the first heat-dissipation film layer is substantially equal to a thickness of the wave-absorbing material layer, the thickness of the first heat-dissipation film layer is substantially equal to a thickness of the first back film layer, the thickness of the first heat-dissipation film layer is greater than a thickness of the second heat-dissipation film layer, and the thickness of the second heat-dissipation film layer is greater than a thickness of the display substrate; and/or, a thickness of the first back film layer is greater than or equal to 0.05 mm and less than or equal to 0.1 mm, a thickness of the wave-absorbing material layer is greater than or equal to 0.03 mm and less than or equal to 0.15 mm, a thickness of the first heat-dissipation film layer is greater than or equal to 0.08 mm and less than or equal to 0.15 mm, a thickness of the second heat-dissipation film layer is greater than or equal to 0.03 mm and less than or equal to 0.05 mm, and a thickness of the display substrate is greater than or equal to 0.02 mm and less than or equal to 0.05 mm. ### Claim 5 (depends on 1) The display panel according to claim 1, further comprising a first heat-dissipation film layer and a second heat-dissipation film layer, wherein the first heat-dissipation film layer is arranged between the first back film layer and the wave-absorbing material layer; the second heat-dissipation film layer and the wave-absorbing material layer are arranged at a same level, and an orthographic projection of the first heat-dissipation film layer onto the second surface at least covers an orthographic projection of the second heat-dissipation film layer onto the second surface and an orthographic projection of the wave-absorbing material layer onto the second surface. ### Claim 6 (depends on 5) The display panel according to claim 5, wherein a thickness of the wave-absorbing material layer is substantially equal to a thickness of the second heat-dissipation film layer, a thickness of the first heat-dissipation film layer is substantially equal to a thickness of the first back film layer, the thickness of the first heat-dissipation film layer is greater than the thickness of the second heat-dissipation film layer, and the thickness of the second heat-dissipation film layer is greater than a thickness of the display substrate; and/or, a thickness of the wave-absorbing material layer is greater than or equal to 0.03 mm and less than or equal to 0.15 mm, a thickness of the second heat-dissipation film layer is greater than or equal to 0.03 mm and less than or equal to 0.05 mm, a thickness of the first heat-dissipation film layer is greater than or equal to 0.08 mm and less than or equal to 0.15 mm, a thickness of the first back film layer is greater than or equal to 0.05 mm and less than or equal to 0.1 mm, and a thickness of the display substrate is greater than or equal to 0.02 mm and less than or equal to 0.05 mm. ### Claim 7 (depends on 1) The display panel according to claim 1, wherein the wave-absorbing material layer comprises one or more of a ferrite layer, a magnetic ferrous nanomaterial layer, a carbon fiber layer, a carbon nanotube layer, or a silicon carbide layer. ### Claim 8 (depends on 1) The display panel according to claim 1, wherein the display substrate is a flexible display substrate; the first surface comprises a display region and a peripheral region at a periphery of the display region; the second surface comprises a first region and a second region; an orthographic projection of the display region onto the second surface overlaps the first region, an orthographic projection of the peripheral region onto the second surface overlaps the second region; the multiplexing circuit is arranged in the peripheral region; the second region comprises a bent region and a non-bent region; the bent region is arranged between the non-bent region and the first region; and the wave-absorbing material layer is arranged in the non-bent region. ### Claim 9 (depends on 1) The display panel according to claim 1, further comprising an upper antenna, a lower antenna and a plurality of data lines longitudinally arranged on the display substrate; wherein the upper antenna is arranged above the display substrate and the lower antenna is arranged below the display substrate; data voltage signals provided by the multiplexing circuit are output through the data lines, and the wave-absorbing material layer is used to absorb the electromagnetic wave interference signals generated by the multiplexing circuit. ### Claim 10 (depends on 1) A display module, comprising a multiplexing circuit and the display panel according to claim 1; wherein the multiplexing circuit is arranged on the first surface of the display substrate comprised in the display panel. ### Claim 11 (depends on 10) The display module according to claim 10, further comprising a driver integrated circuit, wherein the driver integrated circuit is arranged on a side of the multiplexing circuit that is far away from the display substrate. ### Claim 12 (depends on 10) The display module according to claim 10, further comprising a bottom adhesive tape layer, a polarizer layer, a top adhesive tape layer, and a cover plate, wherein the bottom adhesive tape layer, the polarizer layer, the top adhesive tape layer, and the cover plate are arranged sequentially on a side of the display substrate that is far away from the first back film layer. ### Claim 13 (depends on 10) A communication device, comprising the display module according to claim 10.