# US 12,604,526 B2 · Display panel and fabrication method thereof, and display apparatus > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,604,526 B2 - Document ID: US12604526B2 - Status: Granted - Kind: B2 - Application number: 17/989,342 - Filed: 2022-11-17 - Published: 2024-02-01 - Granted: 2026-04-14 - Earliest claimed: 2022-07-29 - Assignees: Shanghai Tianma Micro-Electronics Co., Ltd. - Applicants: Shanghai Tianma Micro-Electronics Co., Ltd. - Inventors: Xiaoli Liu; Yuqin Li; Cao Liu - Web page: https://patentgrep.com/patent/US12604526B2 ## CPC - H10D 86/60: wherein the TFTs are in active matrices - H10D 86/0231: {using masks, e.g. half-tone masks} - H10D 86/451: {characterised by the compositions or shapes of the interlayer dielectrics} - H10W 72/072: {of bump connectors} - H10W 72/90: Bond pads, in general - H10W 90/00: Package configurations - H10D 86/441: {Interconnections, e.g. scanning lines} - H10D 86/481: {integrated with passive devices, e.g. auxiliary capacitors} - H10W 72/07204: {using temporary auxiliary members, e.g. sacrificial coatings} - H10W 72/07236: {Soldering or alloying} - H10W 72/20: Bump connectors, e.g. solder bumps or copper pillars; Dummy bumps; Thermal bumps - H10W 72/242: {relative to the surface, e.g. recessed, protruding} - H10W 72/252: {comprising solid metals or solid metalloids, e.g. PbSn, Ag or Cu} - H10W 72/923: {Bond pads having multiple stacked layers} - H10W 72/9415: {relative to the surface, e.g. recessed, protruding} - H10W 72/952: {comprising metals or metalloids, e.g. PbSn, Ag or Cu} - H10W 90/722: {between stacked chips} - H10D: INORGANIC ELECTRIC SEMICONDUCTOR DEVICES - H10W: GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10 ## Abstract A display panel, a fabrication method of the display panel, and a display apparatus are provided in the present disclosure. The display panel includes a substrate; a drive substrate on the substrate, where the drive substrate includes a first film layer; and the first film layer includes a first opening; and a light-emitting element on the drive substrate, where the light-emitting element is disposed corresponding to the first opening. The drive substrate further includes an auxiliary film layer; and the auxiliary film layer includes a thickened part, a thinned part, or a hollow part overlapped with the first opening. ## Claims ### Claim 1 A display panel, comprising: a substrate; a drive substrate on the substrate, wherein the drive substrate includes a first film layer; and the first film layer includes a first opening; and a light-emitting element on the drive substrate, wherein the light-emitting element is disposed corresponding to the first opening, wherein: the drive substrate further includes an auxiliary film layer; and the auxiliary film layer includes a thickened part, a thinned part, or a hollow part overlapped with the first opening, and the drive substrate further includes a connection part disposed between the first film layer and the substrate and electrically connected to a thin film transistor, wherein the first opening exposes at least a first portion of the connection part and the first film layer covers at least a second portion of the connection part. ### Claim 2 (depends on 1) The display panel according to claim 1, wherein: the first film layer includes an organic material. ### Claim 3 (depends on 1) The display panel according to claim 1, wherein: the first film layer includes a negative photoresist. ### Claim 4 (depends on 1) The display panel according to claim 1, wherein: the first film layer includes a light-absorbing material. ### Claim 5 (depends on 1) The display panel according to claim 1, wherein: the auxiliary film layer is adjacent to the first film layer. ### Claim 6 (depends on 1) The display panel according to claim 1, wherein: the auxiliary film layer includes a first auxiliary layer on a side of the first film layer away from the substrate; and/or the auxiliary film layer includes a second auxiliary layer on a side of the first film layer facing toward the substrate. ### Claim 7 (depends on 6) The display panel according to claim 6, wherein: the first auxiliary layer is made of an organic material. ### Claim 8 (depends on 6) The display panel according to claim 6, wherein: a density of the first auxiliary layer is higher than a density of the first film layer. ### Claim 9 (depends on 6) The display panel according to claim 6, wherein: the first auxiliary layer is overlapped with at least a part of sidewalls of the first opening. ### Claim 10 (depends on 6) The display panel according to claim 6, wherein: the first auxiliary layer includes a first hollow part; and the first hollow part is within a coverage region of the first opening. ### Claim 11 (depends on 6) The display panel according to claim 6, wherein: the drive substrate includes a plurality of electrodes exposed by the first opening; and the plurality of electrodes corresponds to different hollow parts included in the hollow part, respectively. ### Claim 12 (depends on 6) The display panel according to claim 6, wherein: the drive substrate includes a plurality of electrodes exposed by the first opening; and the first auxiliary layer includes a separation element between adjacent electrodes of the plurality of electrodes. ### Claim 13 (depends on 12) The display panel according to claim 12, wherein: a distance from a top surface of the separation element to a top surface of the adjacent electrodes is L, wherein L≤4 μm is satisfied. ### Claim 14 (depends on 12) The display panel according to claim 12, wherein: a thickness h of the separation element is greater than a thickness d1 of the first auxiliary layer in an upper region of the first film layer. ### Claim 15 (depends on 12) The display panel according to claim 12, wherein: a sum of thicknesses of the first film layer and the first auxiliary layer is H, and a thickness of the separation element is h, wherein h≤½*H is satisfied. ### Claim 16 (depends on 6) The display panel according to claim 6, wherein: a sum of thicknesses of the first film layer and the first auxiliary layer is H, wherein H≤4 μm is satisfied. ### Claim 17 (depends on 12) The display panel according to claim 12, wherein: a width of the separation element is D, wherein D≤5 μm is satisfied; and a width direction points from an electrode adjacent of the plurality of electrodes to one side of the separation element to another electrode adjacent of the plurality of electrodes to another side of the separation element. ### Claim 18 (depends on 12) The display panel according to claim 12, wherein: the second auxiliary layer includes a second thinned part; and the separation element is overlapped with the second thinned part. ### Claim 19 (depends on 6) The display panel according to claim 6, wherein: the second auxiliary layer includes a second thickened part in the first opening. ### Claim 20 (depends on 6) The display panel according to claim 6, wherein: the drive substrate includes a plurality of electrodes exposed by the first opening; and at least a part of the plurality of electrodes is on the thickened part. ### Claim 21 (depends on 6) The display panel according to claim 6, wherein: the second auxiliary layer includes a plurality of thickened parts; and the plurality of thickened parts are in a one-to-one correspondence with at least a part of light-emitting elements. ### Claim 22 (depends on 6) The display panel according to claim 6, wherein: the second auxiliary layer includes a plurality of thickened parts; and at least a part of the plurality of thickened parts corresponding to different light-emitting elements is continuous. ### Claim 23 (depends on 1) The display panel according to claim 1, wherein: the drive substrate includes a plurality of electrodes exposed by the first opening; and an electrode of the plurality of electrodes includes a groove. ### Claim 24 (depends on 23) The display panel according to claim 23, wherein: the groove passes through or does not pass through the electrode of the plurality of electrodes. ### Claim 25 (depends on 23) The display panel according to claim 23, wherein: an edge of the groove passes through a portion of an edge of the electrode of the plurality of electrodes. ### Claim 26 (depends on 25) The display panel according to claim 25, wherein: in electrodes of the plurality of electrodes corresponding to a same light-emitting element, the electrode of the plurality of electrodes includes a first edge facing away from another electrode of the plurality of electrodes, and the groove passes through a portion of the first edge. ### Claim 27 (depends on 23) The display panel according to claim 23, wherein: the groove is not overlapped with a connection position of the light-emitting element. ### Claim 28 (depends on 1) The display panel according to claim 1, wherein: the display panel includes a light-transmitting region and a non-light-transmitting region; and the non-light-transmitting region includes a light-emitting element configuration region; and the first film layer further includes a second opening; and the second opening defines a pixel light-transmitting region of a pixel. ### Claim 29 A display apparatus, comprising: a display panel, comprising: a substrate; a drive substrate on the substrate, wherein the drive substrate includes a first film layer; and the first film layer includes a first opening; and a light-emitting element on the drive substrate, wherein the light-emitting element is disposed corresponding to the first opening, wherein: the drive substrate further includes an auxiliary film layer; and the auxiliary film layer includes a thickened part, a thinned part, or a hollow part overlapped with the first opening, and the drive substrate further includes a connection part disposed between the first film layer and the substrate and electrically connected to a thin film transistor, wherein the first opening exposes at least a first portion of the connection part and the first film layer covers at least a second portion of the connection part.