# US 2021/0240300 A1 · Electroluminescent device, touch panel, and touch display device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2021/0240300 A1 - Document ID: US20210240300A1 - Status: Published application - Kind: A1 - Application number: 16/098,477 - Filed: 2018-01-09 - Published: 2021-08-05 - Earliest claimed: 2017-05-12 - Assignees: Boe Technology Group Co., Ltd. - Applicants: Boe Technology Group Co., Ltd. - Inventors: Xinbin HAN; Hui ZHAO - Web page: https://patentgrep.com/patent/US20210240300A1 ## CPC - G06F 3/0412: {Digitisers structurally integrated in a display} - G06F 3/04144: {using an array of force sensing means (position sensing using the local deformation of sensor cells G06F3/0447)} - G06F 3/0443: {using a single layer of sensing electrodes} - G06F 3/045: using resistive elements, e.g. a single continuous surface or two parallel surfaces put in contact - H10K 59/40: OLEDs integrated with touch screens - G06F 2203/04105: Pressure sensors for measuring the pressure or force exerted on the touch surface without providing the touch position - G06F 2203/04106: Multi-sensing digitiser, i.e. digitiser using at least two different sensing technologies simultaneously or alternatively, e.g. for detecting pen and finger, for saving power or for improving position detection - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) - H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES ## Abstract The present disclosure relates to an electroluminescent device, a touch panel and a touch display device. The electroluminescent device includes: an array substrate, a first electrode layer, an electroluminescent layer and a second electrode layer. The electroluminescent device further includes a force sensing layer electrically coupled to the first electrode layer and the second electrode layer; wherein the force sensing layer is a strain resistance material layer which outputs a voltage signal under driving of a power supply voltage provided by the first and second electrode layers. ## Claims ### Claim at position 1 1-12. (canceled) ### Claim 13 An electroluminescent device, comprising an array substrate, a first electrode layer, an electroluminescent layer and a second electrode layer; wherein the electroluminescent device further comprises: a force sensing layer electrically coupled to the first electrode layer and the second electrode layer; wherein the force sensing layer is a strain resistance material layer which outputs a voltage signal under driving of a power supply voltage provided by the first and second electrode layers. ### Claim 14 (depends on 13) The electroluminescent device according to claim 13, wherein: the force sensing layer is disposed between the array substrate and the first electrode layer; or the force sensing layer is disposed between the first electrode layer and the electroluminescent layer; or the force sensing layer is disposed between the electroluminescent layer and the second electrode layer. ### Claim 15 (depends on 14) The electroluminescent device according to claim 14, wherein the strain resistance material layer comprises: a first strain resistance material layer electrically coupled to the first electrode layer and the second electrode layer; a second strain resistance material layer which mirrors the first strain resistance material layer, is isolated from the first strain resistance material layer and is electrically coupled to the first electrode layer and the second electrode layer. ### Claim 16 (depends on 15) The electroluminescent device according to claim 15, further comprising: a voltage output end electrically coupled to the first strain resistance material layer and the second strain resistance material layer for outputting the voltage signal which correspondingly changes according to a change in a resistance value of the strain resistance material layer, wherein the resistance value changes when the strain resistance material layer is subjected to a force applied by an external touch operation. ### Claim 17 (depends on 16) The electroluminescent device according to claim 16, wherein the voltage output end comprises: a first output port electrically coupled to the first strain resistance material layer; and a second output port electrically coupled to the second strain resistance material layer and isolated from the first output port. ### Claim 18 (depends on 15) The electroluminescent device according to claim 15, wherein the first strain resistance material layer and the second strain resistance material layer comprise the same geometric pattern. ### Claim 19 (depends on 18) The electroluminescent device according to claim 18, wherein the geometric pattern comprises two sub-geometric patterns that are symmetric with each other. ### Claim 20 (depends on 19) The electroluminescent device according to claim 19, wherein each of the sub-geometric patterns is a geometric pattern formed by the strain resistance material layer extending in an axial direction and then turning to extend in a radial direction for a predetermined number of times. ### Claim 21 (depends on 20) The electroluminescent device according to claim 20, further comprising: an encapsulation layer stacked on the second electrode layer. ### Claim 22 A touch display panel, comprising an electroluminescent device; wherein the electroluminescent device comprises an array substrate, a first electrode layer, an electroluminescent layer and a second electrode layer; wherein the electroluminescent device further comprises: a force sensing layer electrically coupled to the first electrode layer and the second electrode layer; wherein the force sensing layer is a strain resistance material layer which outputs a voltage signal under driving of a power supply voltage provided by the first and second electrode layers. ### Claim 23 (depends on 22) The touch display panel according to claim 22, wherein: the force sensing layer is disposed between the array substrate and the first electrode layer; or the force sensing layer is disposed between the first electrode layer and the electroluminescent layer; or the force sensing layer is disposed between the electroluminescent layer and the second electrode layer. ### Claim 24 (depends on 22) The touch display panel according to claim 22, wherein the strain resistance material layer comprises: a first strain resistance material layer electrically coupled to the first electrode layer and the second electrode layer; a second strain resistance material layer which mirrors the first strain resistance material layer, is isolated from the first strain resistance material layer and is electrically coupled to the first electrode layer and the second electrode layer. ### Claim 25 (depends on 24) The touch display panel according to claim 24, further comprising: a voltage output end electrically coupled to the first strain resistance material layer and the second strain resistance material layer for outputting the voltage signal which correspondingly changes according to a change in a resistance value of the strain resistance material layer, wherein the resistance value changes when the strain resistance material layer is subjected to a force applied by an external touch operation. ### Claim 26 (depends on 25) The touch display panel according to claim 25, wherein the voltage output end comprises: a first output port electrically coupled to the first strain resistance material layer; and a second output port electrically coupled to the second strain resistance material layer and isolated from the first output port. ### Claim 27 (depends on 24) The touch display panel according to claim 24, wherein the first strain resistance material layer and the second strain resistance material layer comprise the same geometric pattern. ### Claim 28 (depends on 27) The touch display panel according to claim 27, wherein the geometric pattern comprises two sub-geometric patterns that are symmetric with each other. ### Claim 29 (depends on 28) The touch display panel according to claim 28, wherein each of the sub-geometric patterns is a geometric pattern formed by the strain resistance material layer extending in an axial direction and then turning to extend in a radial direction for a predetermined number of times. ### Claim 30 (depends on 29) The electroluminescent device according to claim 29, further comprising: an encapsulation layer stacked on the second electrode layer. ### Claim 31 (depends on 22) A touch display device, comprising the touch display panel of claim 22. ### Claim 32 (depends on 31) The touch display device according to claim 31, further comprising: a controller configured to determine, according to the voltage signal, a corresponding force value.