# US 2017/0284883 A1 · Display substrate and display device, pressure detection system and detection method thereof > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2017/0284883 A1 - Document ID: US20170284883A1 - Status: Published application - Kind: A1 - Application number: 15/314,467 - Filed: 2016-02-29 - Published: 2017-10-05 - Earliest claimed: 2015-09-24 - Assignees: Boe Technology Group Co., Ltd.; Beijing Boe Optoelectronics Technology Co., Ltd. - Applicants: Boe Technology Group Co., Ltd.; Beijing Boe Optoelectronics Technology Co., Ltd. - Inventors: Jiuxia YANG; Yun QIU; Zhidong WANG - Web page: https://patentgrep.com/patent/US20170284883A1 ## CPC - G01L 9/0072: {using variations in capacitance} - G01L 9/08: by making use of piezoelectric devices {, i.e. electric circuits therefor} - G01L 9/12: by making use of variations in capacitance {, i.e. electric circuits therefor} - H10K 59/1213: {the pixel elements being TFTs} - H10K 59/131: Interconnections, e.g. wiring lines or terminals - H10K 59/38: comprising colour filters or colour changing media [CCM] - H10K 59/8792: {comprising light absorbing layers, e.g. black layers} - G01L 19/083: {electrical} - H10K 59/1201: {Manufacture or treatment} - H10K 59/124: Insulating layers formed between TFT elements and OLED elements - H10K 59/35: comprising red-green-blue [RGB] subpixels - H10K 59/805: {Electrodes} - G01L: MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE (weighing G01G) - H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES ## Abstract Embodiments of the present invention provide a display substrate, a display device, a pressure detection system and a detection method thereof, which relate to the field of display technologies and is able to integrate the ambient pressure testing function in the display substrate for the convenience of being carried by people when going out, wherein the display substrate comprises a base substrate and a pressure sensing structure located on the base substrate configured to test the ambient pressure. The pressure sensing structure comprises a first pressure sensitive electrode and a second pressure sensitive electrode arranged opposite to each other, and a plurality of insulating pillars arranged at intervals between the first pressure sensitive electrode and the second pressure sensitive electrode, wherein the first pressure sensitive electrode is in contact with the base substrate. ## Claims ### Claim 1 A display substrate integrated in a display panel, comprising a base substrate, wherein the display substrate further comprises a pressure sensing structure located on the base substrate configured to test an ambient pressure, the pressure sensing structure comprising a first pressure sensitive electrode and a second pressure sensitive electrode arranged opposite to each other, and a plurality of insulating pillars arranged at intervals between the first pressure sensitive electrode and the second pressure sensitive electrode; the first pressure sensitive electrode is in contact with the base substrate. ### Claim 2 (depends on 1) The display substrate according to claim 1, wherein the display substrate is a color film substrate and further comprises a color film layer and a black matrix located on the base substrate; the pressure sensing structure is located between the base substrate and at least one of the color film layer or black matrix. ### Claim 3 (depends on 1) The display substrate according to claim 1, wherein the display substrate is a color film substrate and further comprises a color film layer composed of a first color pattern, a second color pattern and a third color pattern; the display substrate comprises a display area and a non-display area located in the periphery of the display area; the pressure sensing structure is located in the non-display area. ### Claim 4 (depends on 3) The display substrate according to claim 3, wherein the display substrate further comprises a black matrix, the insulating pillar and the black matrix having a same material, and being located in a same layer or formed by using a same patterning process. ### Claim 5 (depends on 4) The display substrate according to claim 4, wherein the display substrate further comprises a common electrode layer located above the second pressure sensitive electrode and the color film layer, and there are materials between the common electrode layer and the second pressure sensitive electrode, which materials compose at least one of the first color pattern, the second color pattern or the third color pattern. ### Claim 6 (depends on 3) The display substrate according to claim 3, wherein the display substrate further comprises a common electrode layer, the second pressure sensitive electrode and the common electrode layer having a same material, and being located in a same layer or formed by using a same patterning process; the insulating pillar is formed by successively superposing materials that compose at least one of the first color pattern, the second color pattern, the third color pattern or the black matrix. ### Claim 7 (depends on 1) The display substrate according to claim 1, wherein the display substrate is an array substrate, the base substrate is provided with a thin film transistor array, the thin film transistor is a bottom gate type transistor, the first pressure sensitive electrode and a gate of the thin film transistor have a same material, and are located in a same layer or formed by using a same patterning process, and the insulating pillar and a gate insulating layer covering the gate have a same material, and are located in a same layer or formed by using a same patterning process. ### Claim 8 (depends on 1) The display substrate according to claim 1, wherein the display substrate is an array substrate, the base substrate is provided with a thin film transistor array, the thin film transistor is a top gate type transistor, and a metal light-shielding layer and a buffer layer covering the metal light-shielding layer are arranged between the thin film transistor and the base substrate; the first pressure sensitive electrode and the metal light-shielding layer have a same material, and are located in a same layer or formed by using a same patterning process; the insulating pillar and the buffer layer have a same material, and are located in a same layer or formed by using a same patterning process. ### Claim 9 (depends on 7) The display substrate according to claim 7, wherein each thin film transistor in the thin film transistor array corresponds to one pixel unit, and the pressure sensing structure is located in an area to which the pixel unit corresponds or located in an area outside the area to which the pixel unit corresponds. ### Claim 10 (depends on 9) The display substrate according to claim 9, wherein one pressure sensing structure is provided for a plurality of pixel units. ### Claim 11 (depends on 1) The display substrate according to claim 1, wherein the display substrate is used for an OLED display panel and comprises an electrode insulating layer arranged at one side of the second pressure sensitive electrode away from the base substrate, the second pressure sensitive electrode is in contact with the electrode insulating layer, and one side of the electrode insulating layer away from the base substrate is provided with an OLED light-emitting element. ### Claim 12 (depends on 2) The display substrate according to claim 2, wherein the display substrate further comprises a common electrode layer located at one side of the color film layer and the black matrix away from the base substrate; an insulating layer is provided between the second pressure sensitive electrode and at least one of the color film layer, the black matrix or the common electrode layer. ### Claim 13 (depends on 1) The display substrate according to claim 1, wherein a material that composes the first pressure sensitive electrode or the second pressure sensitive electrode comprises at least one of graphene, carbon nanotubes, nano-silver, indium tin oxide or indium zinc oxide. ### Claim 14 (depends on 1) A display device comprising the display substrate according to claim 1. ### Claim 15 (depends on 14) A pressure detection system comprising the display device according to claim 14, further comprising a pressure signal collector, a data processor; the pressure signal collector being connected to the first pressure sensitive electrode, the second pressure sensitive electrode in the pressure sensing structure of the display device and the data processor, and being configured to collect a capacitance value between the first pressure sensitive electrode and the second pressure sensitive electrode and output a collection result to the data processor; the data processor being further connected to the display device, and being configured to convert the capacitance value collected by the pressure signal collector into a pressure value and output it to the display device such that the display device displays the pressure value. ### Claim 16 (depends on 15) The pressure detection system according to claim 15, further comprising a memory and a comparator; the comparator being connected to the data processor, the memory and the display device, and being configured to receive the pressure value outputted by the data processor and compare the pressure value with a pressure threshold stored in the memory, and when the pressure value outputted by the data processor is greater than the pressure threshold, send a prompt signal to the display device such that that the display device displays a prompt message according to the prompt signal. ### Claim 17 (depends on 14) A method of detecting a pressure using the display device of claim 14, the method comprising: collecting a capacitance value between a first pressure sensitive electrode and a second pressure sensitive electrode in the display device; converting the capacitance value into a pressure value; displaying the pressure value on said display device. ### Claim 18 (depends on 17) The method according to claim 17, further comprising: comparing the pressure value with a pressure threshold, and when the pressure value is greater than the pressure threshold, sending a prompt signal to the display device such that the display device displays a prompt message according to the prompt signal. ### Claim 19 (depends on 8) The display substrate according to claim 8, wherein each thin film transistor in the thin film transistor array corresponds to one pixel unit, and the pressure sensing structure is located in an area to which the pixel unit corresponds or located in an area outside the area to which the pixel unit corresponds. ### Claim 20 (depends on 19) The display substrate according to claim 19, wherein one pressure sensing structure is provided for a plurality of pixel units.