# US 12,181,769 B2 · Display device and vehicle > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,181,769 B2 - Document ID: US12181769B2 - Status: Granted - Kind: B2 - Application number: 17/875,603 - Filed: 2022-07-28 - Published: 2024-01-04 - Granted: 2024-12-31 - Earliest claimed: 2022-06-30 - Assignees: Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd. - Applicants: Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd. - Inventors: Haiyan Shen; Zhimeng Luo; Le Zhang; Wenxu Xianyu; Chunpeng Zhang - Web page: https://patentgrep.com/patent/US12181769B2 ## CPC - G02F 1/1685: Operation of cells; Circuit arrangements affecting the entire cell - B60K 35/00: Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles - B60K 35/415: {Glare prevention} - G02F 1/13394: {spacers regularly patterned on the cell subtrate, e.g. walls, pillars (G02F1/133377 takes precedence)} - G02F 1/134309: {characterised by their geometrical arrangement} - G02F 1/167: by electrophoresis - G02F 1/1676: Electrodes - G02F 1/1677: Structural association of cells with optical devices, e.g. reflectors or illuminating devices - G02F 1/1679: Gaskets; Spacers; Sealing of cells; Filling or closing of cells - H10K 59/50: OLEDs integrated with light modulating elements, e.g. with electrochromic elements, photochromic elements or liquid crystal elements - B60K 35/22: Display screens - B60K 2360/33: Illumination features - G02F 1/13439: {characterised by their electrical, optical, physical properties; materials therefor; method of making} - G02F 1/16756: Insulating layers - G02F 2201/44: Arrangements combining different electro-active layers, e.g. electrochromic, liquid crystal or electroluminescent layers - G02F 2203/30: Gray scale - H10K 59/90: Assemblies of multiple devices comprising at least one organic light-emitting element - 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 - B60K: ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES - H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES ## Abstract A display device and a vehicle are disclosed. The display device includes a display panel and an electrophoretic color changing layer disposed on one side of the display panel. The electrophoretic color changing layer includes a plurality of electrophoretic color changing devices, the electrophoretic color changing devices are disposed corresponding to transparent sub areas, and the electrophoretic color changing devices can transition between transparent and opaque states. ## Claims ### Claim 1 A display device, having a display area and a non-display area surrounding at least a part of the display area, wherein the display area comprises a plurality of display sub areas and a plurality of transparent sub areas arranged in an array, and the display device comprises: a display panel comprising a substrate and a plurality of light-emitting devices disposed on the substrate, wherein the light-emitting devices are disposed corresponding to the display sub areas; and an electrophoretic color changing layer disposed on one side of the display panel; wherein the electrophoretic color changing layer comprises a plurality of electrophoretic color changing devices, the electrophoretic color changing devices are disposed corresponding to the transparent sub areas, and the electrophoretic color changing devices transition between a transparent state and an opaque state; wherein the electrophoretic color changing layer comprises a first substrate, a second substrate, and barrier walls; wherein the electrophoretic color changing layer further comprises a first electrode layer, the first electrode layer comprises first electrodes and second electrodes corresponding to the electrophoretic color changing devices one to one, and the first electrodes and the second electrodes in a same electrophoretic color changing device are spaced apart from each other; and each of the electrophoretic color changing devices further comprises charged particles disposed on one side of the first electrodes and the second electrodes, and the charged particles move in the electrophoretic color changing devices according to a voltage change between the first electrodes and the second electrodes; and wherein at least three light-emitting devices having different colors are disposed in one display sub area, the transparent sub areas are disposed between adjacent display sub areas, and in the same electrophoretic color changing device, each of the second electrodes is disposed on at least one side of each of the first electrodes. ### Claim 2 (depends on 1) The display device according to claim 1, wherein the electrophoretic color changing layer further comprises a plurality of transmission units, and the transmission units are disposed corresponding to the display sub areas and between adjacent electrophoretic color changing devices. ### Claim 3 (depends on 1) The display device according to claim 1, wherein the electrophoretic color changing layer further comprises a sealant attached between the first substrate and the second substrate, and the sealant is disposed between the first substrate and the second substrate and in the non-display area. ### Claim 4 (depends on 1) The display device according to claim 1, wherein the first electrode layer is disposed on the first substrate or the second substrate. ### Claim 5 (depends on 4) The display device according to claim 4, wherein the first electrodes are transparent electrodes, and the first electrodes are disposed corresponding to the transparent sub areas. ### Claim 6 (depends on 5) The display device according to claim 5, wherein the display area further comprises non-transparent sub areas between the display sub areas and the transparent sub areas, and the second electrodes are at least partially disposed corresponding to the non-transparent sub areas. ### Claim 7 (depends on 6) The display device according to claim 6, wherein the electrophoretic color changing layer further comprises a second electrode layer and an isolation insulating layer disposed on the first substrate or the second substrate, the second electrode layer is disposed between the first electrode layer and the first substrate or between the first electrode layer and the second substrate, the isolation insulating layer is disposed between the first electrode layer and the second electrode layer, and the first electrode layer and the second electrode layer are disposed on a same substrate; the first electrode layer further comprises connection electrodes connected between adjacent first electrodes; and the second electrode layer further comprises first wirings, and the second electrodes are electrically connected to each other by the first wirings. ### Claim 8 (depends on 4) The display device according to claim 4, wherein the barrier walls are at least partially disposed on the first electrodes or the second electrodes. ### Claim 9 (depends on 4) The display device according to claim 4, wherein the display panel further comprises an encapsulation layer disposed on one side of the light-emitting devices away from the substrate, and the first substrate is the substrate of the display panel or the encapsulation layer of the display panel. ### Claim 10 (depends on 9) The display device according to claim 9, wherein the first substrate is the encapsulation layer, and both the first electrodes and the second electrodes are disposed on the encapsulation layer. ### Claim 11 (depends on 9) The display device according to claim 9, wherein the barrier walls are organic materials formed on the first substrate. ### Claim 12 (depends on 1) The display device according to claim 1, wherein the display panel further comprises an encapsulation layer and transistors and openings disposed between the substrate and the encapsulation layer, the light-emitting devices are disposed on the transistors, the encapsulation layer is disposed on the light-emitting devices, the openings are defined corresponding to the transparent sub areas and penetrate at least inorganic material film layers of the transistors, and a filling material in the openings comprises an organic material. ### Claim 13 (depends on 1) The display device according to claim 1, wherein when a first voltage is applied between the first electrodes and the second electrodes, the charged particles are gathered on the first electrodes, and the transparent sub areas are in the opaque state; when a second voltage is applied between the first electrodes and the second electrodes, the charged particles are gathered on the second electrodes, and the transparent sub areas are in the transparent state; and wherein the first voltage and the second voltage are reverse voltages. ### Claim 14 (depends on 13) The display device according to claim 13, wherein when a third voltage is applied between the first electrodes and the second electrodes, the charged particles are distributed on the first electrodes and the second electrodes, the transparent sub areas are in a grayscale state, and an absolute value of the third voltage is less than an absolute value of the first voltage and an absolute value of the second voltage. ### Claim 15 (depends on 1) A vehicle, comprising the display device according to claim 1. ### Claim 16 (depends on 1) The display device according to claim 1, wherein the barrier walls comprise a first sub barrier wall layer and a second sub barrier wall layer, the first sub barrier wall layer is disposed on the first substrate, the second sub barrier wall layer is disposed on the first sub barrier wall layer, and the second sub barrier wall layer is attached with the second substrate, wherein an orthographic projection of the second sub barrier wall layer on the first substrate is in an orthographic projection of the first sub barrier wall layer on the first substrate. ### Claim 17 A display device, having a display area and a non-display area surrounding at least a part of the display area, wherein the display area comprises a plurality of display sub areas and a plurality of transparent sub areas arranged in an array, and the display device comprises: a display panel comprising a substrate and a plurality of light-emitting devices disposed on the substrate, wherein the light-emitting devices are disposed corresponding to the display sub areas; and an electrophoretic color changing layer disposed on one side of the display panel; wherein the electrophoretic color changing layer comprises a plurality of electrophoretic color changing devices, the electrophoretic color changing devices are disposed corresponding to the transparent sub areas, and the electrophoretic color changing devices transition between a transparent state and an opaque state; wherein the electrophoretic color changing layer further comprises a first electrode layer, the first electrode layer comprises first electrodes and second electrodes corresponding to the electrophoretic color changing devices one to one, and the first electrodes and the second electrodes in a same electrophoretic color changing device are spaced apart from each other; and each of the electrophoretic color changing devices further comprises charged particles disposed on one side of the first electrodes and the second electrodes, and the charged particles move in the electrophoretic color changing devices according to a voltage change between the first electrodes and the second electrodes; wherein the display area further comprises non-transparent sub areas between the display sub areas and the transparent sub areas, and the second electrodes are at least partially disposed corresponding to the non-transparent sub areas. ### Claim 18 A display device, having a display area and a non-display area surrounding at least a part of the display area, wherein the display area comprises a plurality of display sub areas and a plurality of transparent sub areas arranged in an array, and the display device comprises: a display panel comprising a substrate and a plurality of light-emitting devices disposed on the substrate, wherein the light-emitting devices are disposed corresponding to the display sub areas; and an electrophoretic color changing layer disposed on one side of the display panel; wherein the electrophoretic color changing layer comprises a plurality of electrophoretic color changing devices, the electrophoretic color changing devices are disposed corresponding to the transparent sub areas, and the electrophoretic color changing devices transition between a transparent state and an opaque state; wherein the electrophoretic color changing layer further comprises a first electrode layer, the first electrode layer comprises first electrodes and second electrodes corresponding to the electrophoretic color changing devices one to one, and the first electrodes and the second electrodes in a same electrophoretic color changing device are spaced apart from each other; and each of the electrophoretic color changing devices further comprises charged particles disposed on one side of the first electrodes and the second electrodes, and the charged particles move in the electrophoretic color changing devices according to a voltage change between the first electrodes and the second electrodes; when a first voltage is applied between the first electrodes and the second electrodes, the charged particles are gathered on the first electrodes, and the transparent sub areas are in the opaque state; when a second voltage is applied between the first electrodes and the second electrodes, the charged particles are gathered on the second electrodes, and the transparent sub areas are in the transparent state; and wherein the first voltage and the second voltage are reverse voltages; and when a third voltage is applied between the first electrodes and the second electrodes, the charged particles are distributed on the first electrodes and the second electrodes, the transparent sub areas are in a grayscale state, and an absolute value of the third voltage is less than an absolute value of the first voltage and an absolute value of the second voltage.