# US 12,009,369 B2 · Display panel and display device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,009,369 B2 - Document ID: US12009369B2 - Status: Granted - Kind: B2 - Application number: 17/423,956 - Filed: 2021-05-24 - Published: 2022-11-03 - Granted: 2024-06-11 - Earliest claimed: 2021-04-29 - Assignees: Tcl China Star Optoelectronics Technology Co., Ltd. - Applicants: Tcl China Star Optoelectronics Technology Co., Ltd. - Inventors: Daobing Hu - Web page: https://patentgrep.com/patent/US12009369B2 ## CPC - H10D 86/60: wherein the TFTs are in active matrices - H10D 86/441: {Interconnections, e.g. scanning lines} - H10D 30/6741: {Group IV materials, e.g. germanium or silicon carbide (TFTs having oxide semiconductors H10D30/6755)} - H10D 62/8325: {Silicon carbide} - H10D 62/8503: {Nitride Group III-V materials, e.g. AlN or GaN} - H10D: INORGANIC ELECTRIC SEMICONDUCTOR DEVICES ## Abstract A display panel and a display device are provided. A sub-pixel unit of the display panel includes at least one light-transmitting region, and each light-transmitting region is provided with at least one driving transistor. At least part of a source wiring of the driving transistor is disposed at a boundary of the light-transmitting region and parallel to an extension direction of data signal lines, and a drain wiring is disposed in the light-transmitting region. The light-transmitting region of the sub-pixel unit occupied by the driving transistor is reduced to alleviate a problem of low aperture ratio of a backplane of current display products. ## Claims ### Claim 1 A display panel, comprising: gate scan lines extending along a first direction; and data signal lines extending along a second direction, wherein the data signal lines intersect the gate scan lines to define a plurality of sub-pixel units, each of the sub-pixel units comprises at least one light-transmitting region, each of the at least one light-transmitting regions is provided with at least one driving transistor, and the driving transistor comprises a source wiring and a drain wiring; and wherein at least part of the source wiring of the driving transistor is disposed at a boundary of the at least one light-transmitting region and parallel to an extension direction of the data signal lines, and the drain wiring is disposed in the at least one light-transmitting region, wherein the drain wiring is parallel to the second direction, and the drain wiring coincides with a centerline of the at least one light-transmitting region, wherein the source wiring comprises two first sub-source lines disposed at the boundary of the at least one light-transmitting region and parallel to the extension direction of the data signal lines and a second sub-source line connecting the two first sub-source lines, and wherein the two first sub-source lines are symmetrical with respect to the drain wiring. ### Claim 2 (depends on 1) The display panel according to claim 1, wherein the second sub-source line is parallel to the first direction, and the second sub-source line coincides with a dividing line of two adjacent light-transmitting regions. ### Claim 3 (depends on 1) The display panel according to claim 1, wherein one of the two first sub-source lines is electrically connected to an adjacent data signal line. ### Claim 4 (depends on 3) The display panel according to claim 3, wherein an interval between the first sub-source line and the adjacent data signal line is less than or equal to 1.5 micrometers. ### Claim 5 (depends on 1) The display panel according to claim 1, wherein the source wiring comprises a first sub-source line and a second sub-source line, the first sub-source line is disposed at the boundary of the at least one light-transmitting region and parallel to the extension direction of the data signal lines, one end of the second sub-source line is connected to the first sub-source line, and another end of the second sub-source line is connected to one of the data signal lines away from the first sub-source line. ### Claim 6 (depends on 1) The display panel according to claim 1, wherein a line width of the source wiring and/or the drain wiring is greater than or equal to 1.5 micrometers. ### Claim 7 (depends on 1) The display panel according to claim 1, wherein the driving transistor further comprises a gate disposed on a same layer as the gate scan lines and connected to one of the gate scan lines, and the gate corresponds to the at least one light-transmitting region. ### Claim 8 (depends on 7) The display panel according to claim 7, wherein a material of the gate comprises indium tin oxide. ### Claim 9 (depends on 7) The display panel according to claim 7, wherein the driving transistor further comprises an active layer disposed apart from the gate. ### Claim 10 (depends on 9) The display panel according to claim 9, wherein the active layer comprises a channel region and doped regions, a portion of the active layer corresponding to the channel region overlaps the gate in a vertical direction, and portions of the active layer corresponding to the doped regions are connected to the source wiring and the drain wiring. ### Claim 11 (depends on 10) The display panel according to claim 10, wherein a material of the active layer comprises silicon carbide and gallium nitride. ### Claim 12 A display device comprising a display panel, wherein the display panel comprises: gate scan lines extending along a first direction; and data signal lines extending along a second direction, wherein the data signal lines intersect the gate scan lines to define a plurality of sub-pixel units, each of the sub-pixel units comprises at least one light-transmitting region, each of the at least one light-transmitting regions is provided with at least one driving transistor, and the driving transistor comprises a source wiring and a drain wiring; and wherein at least part of the source wiring of the driving transistor is disposed at a boundary of the at least one light-transmitting region and parallel to an extension direction of the data signal lines, and the drain wiring is disposed in the at least one light-transmitting region, wherein the drain wiring is parallel to the second direction, and the drain wiring coincides with a centerline of the at least one light-transmitting region, wherein the source wiring comprises two first sub-source lines disposed at the boundary of the at least one light-transmitting region and parallel to the extension direction of the data signal lines and a second sub-source line connecting the two first sub-source lines, and wherein the two first sub-source lines are symmetrical with respect to the drain wiring. ### Claim 13 (depends on 12) The display device according to claim 12, wherein the second sub-source line is parallel to the first direction, and the second sub-source line coincides with a dividing line of two adjacent light-transmitting regions. ### Claim 14 (depends on 12) The display device according to claim 12, wherein one of the two first sub-source lines is electrically connected to an adjacent data signal line. ### Claim 15 (depends on 14) The display device according to claim 14, wherein an interval between the first sub-source line and the adjacent data signal line is less than or equal to 1.5 micrometers. ### Claim 16 (depends on 12) The display device according to claim 12, wherein the source wiring comprises a first sub-source line and a second sub-source line, the first sub-source line is disposed at the boundary of the at least one light-transmitting region and parallel to the extension direction of the data signal lines, one end of the second sub-source line is connected to the first sub-source line, and another end of the second sub-source line is connected to one of the data signal lines away from the first sub-source line.