# US 2025/0098482 A1 · Display module 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 2025/0098482 A1 - Document ID: US20250098482A1 - Status: Published application - Kind: A1 - Application number: 18/558,228 - Filed: 2023-06-30 - Published: 2025-03-20 - Earliest claimed: 2022-11-25 - Assignees: Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd. - Applicants: Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd. - Inventors: Xiaojing HU - Web page: https://patentgrep.com/patent/US20250098482A1 ## CPC - H10K 59/8722: {Peripheral sealing arrangements, e.g. adhesives, sealants} - F16F 15/08: with rubber springs {(grommet- or bushing-type resilient mountings F16F1/3732, F16F1/38); with springs made of rubber and metal (arrangement of internal-combustion or jet-propulsion units B60K5/12; mounting of propulsion plants on vessels B63H21/30; mounting of vehicle drivers' cabs B62D33/0604)} - G09F 9/30: in which the desired character or characters are formed by combining individual elements (panels comprising a number of electrodes in a single cell controlling light arriving from an independent light source, e.g. electro-optical or magneto-optical cell, G02F1/00) - G09F 9/33: being semiconductor devices, e.g. diodes - H10K 77/111: {Flexible substrates} - H10K 2102/311: {Flexible OLED} - Y02E 10/549: Organic PV cells - H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES - F16F: SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION - G09F: DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS - Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION ## Abstract The present application discloses a display module and a display device. An end of a bending portion is connected to a display portion, and the other end of the bending portion is bent toward a side of the display portion close to a binding portion and is connected to the binding portion. A composite functional layer includes a buffer sublayer attached to a side of the display portion close to the binding portion, and a support sublayer attached to a side of the buffer sublayer away from the display portion. The binding portion is attached to a side of the support sublayer away from the buffer sublayer, and the buffer sublayer includes a polyurethane rubber material containing silicon. ## Claims ### Claim 1 A display module, wherein the display module comprises a display panel and a composite functional layer, and the display panel comprises: a display portion; a binding portion provided on a side of the display unit; and a bending portion, wherein an end of the bending portion is connected to the display portion, and another end of the bending portion is bent toward a side of the display portion close to the binding portion and is connected to the binding portion; wherein the composite functional layer comprises a buffer sublayer attached to the side of the display portion close to the binding portion, and a support sublayer attached to a side of the buffer sublayer away from the display portion; the binding portion is attached to a side of the support sublayer away from the buffer sublayer; and the buffer sublayer comprises a polyurethane rubber material containing silicon. ### Claim 2 (depends on 1) The display module of claim 1, wherein a distance between the binding portion and the display portion in a thickness direction of the composite functional layer is less than 260 μm. ### Claim 3 (depends on 1) The display module of claim 1, wherein a distance between the binding portion and the display portion in a thickness direction of the composite functional layer is greater than or equal to 128 μm, and less than or equal to 248 μm. ### Claim 4 (depends on 1) The display module of claim 1, wherein a thickness of the buffer sublayer is greater than or equal to 40 μm, and less than or equal to 150 μm; and elastic modulus of the buffer sublayer is greater than or equal to 50 kPa, and less than or equal to 500 kPa. ### Claim 5 (depends on 1) The display module of claim 1, wherein elastic modulus of the support sublayer is greater than or equal to 50 GPa, and less than or equal to 250 GPa. ### Claim 6 (depends on 1) The display module of claim 1, wherein the support sublayer has a thickness greater than or equal to 30 μm, and less than or equal to 150 μm. ### Claim 7 (depends on 1) The display module of claim 1, wherein the composite functional layer further comprises a first adhesive layer disposed between the buffer sublayer and the display portion, and a second adhesive layer disposed between the buffer sublayer and the support sublayer; wherein a thickness of the first adhesive layer is greater than or equal to 13 μm, and less than or equal to 50 μm; and a thickness of the second adhesive layer is greater than or equal to 35 μm, and less than or equal to 50 μm. ### Claim 8 (depends on 7) The display module of claim 7, wherein at least one of the first adhesive layer and the second adhesive layer comprises a black adhesive material, and at least one of the first adhesive layer and the second adhesive layer is doped with carbon powder particles. ### Claim 9 (depends on 1) The display module of claim 1, wherein the support sublayer comprises a first sub-portion, and a second sub-portion disposed on a side of the first sub-portion close to the bending portion; the second sub-portion has a thickness less than the first sub-portion; a distance from a side surface of the second sub-portion away from the display portion to the display portion is less than a distance from a side surface of the first sub-portion away from the display portion to the display portion; wherein the binding portion is attached to a side of the second sub-portion away from the display portion. ### Claim 10 (depends on 9) The display module of claim 9, wherein the composite functional layer at least comprises a third adhesive layer disposed between the binding portion and the support sublayer, the binding portion is attached to the side of the second sub-portion away from the display portion by the third adhesive layer; wherein a thickness of the third adhesive layer is greater than or equal to a difference between a thickness of the first sub-portion and a thickness of the second sub-portion. ### Claim 11 (depends on 10) The display module of claim 10, wherein the thickness of the third adhesive layer is greater than or equal to 50 μm, and less than or equal to 100 μm. ### Claim 12 (depends on 10) The display module of claim 10, wherein the third adhesive layer comprises a first adhesive disposed between the binding portion and the support sublayer, and a second adhesive attached to a side of the bending portion close to the composite functional layer; and the second adhesive is connected to the first adhesive. ### Claim 13 (depends on 10) The display module of claim 10, wherein at least one of the buffer sublayer and the third adhesive layer is doped with carbon powder particles. ### Claim 14 (depends on 9) The display module of claim 9, wherein a distance from the binding portion to the first sub-portion is greater than or equal to 0, and less than or equal to 300 μm in a direction along the second sub-portion toward the first sub-portion. ### Claim 15 A display device, wherein the display device comprises a display module with a display panel and a composite functional layer, and the display panel comprises: a display portion; a binding portion provided on a side of the display unit; and a bending portion, wherein an end of the bending portion is connected to the display portion, and another end of the bending portion is bent toward a side of the display portion close to the binding portion and is connected to the binding portion; wherein the composite functional layer comprises a buffer sublayer attached to the side of the display portion close to the binding portion, and a support sublayer attached to a side of the buffer sublayer away from the display portion; the binding portion is attached to a side of the support sublayer away from the buffer sublayer; and the buffer sublayer comprises a polyurethane rubber material containing silicon. ### Claim 16 (depends on 15) The display device of claim 15, wherein a distance between the binding portion and the display portion in a thickness direction of the composite functional layer is less than 260 μm. ### Claim 17 (depends on 15) The display device of claim 15, wherein the composite functional layer further comprises a first adhesive layer disposed between the buffer sublayer and the display portion, and a second adhesive layer disposed between the buffer sublayer and the support sublayer; wherein a thickness of the first adhesive layer is greater than or equal to 13 μm, and less than or equal to 50 μm; and a thickness of the second adhesive layer is greater than or equal to 35 μm, and less than or equal to 50 μm. ### Claim 18 (depends on 17) The display device of claim 17, wherein at least one of the first adhesive layer and the second adhesive layer comprises a black adhesive material, and at least one of the first adhesive layer and the second adhesive layer is doped with carbon powder particles. ### Claim 19 (depends on 15) The display device of claim 15, wherein the support sublayer comprises a first sub-portion, and a second sub-portion disposed on a side of the first sub-portion close to the bending portion; the second sub-portion has a thickness less than the first sub-portion; a distance from a side surface of the second sub-portion away from the display portion to the display portion is less than a distance from a side surface of the first sub-portion away from the display portion to the display portion; wherein the binding portion is attached to a side of the second sub-portion away from the display portion. ### Claim 20 (depends on 19) The display device of claim 19, wherein the composite functional layer at least comprises a third adhesive layer disposed between the binding portion and the support sublayer, the binding portion is attached to the side of the second sub-portion away from the display portion by the third adhesive layer; wherein a thickness of the third adhesive layer is greater than or equal to a difference between a thickness of the first sub-portion and a thickness of the second sub-portion.