# US 10,121,422 B2 · Display device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,121,422 B2 - Document ID: US10121422B2 - Status: Granted - Kind: B2 - Application number: 15/095,353 - Filed: 2016-04-11 - Published: 2017-03-23 - Granted: 2018-11-06 - Earliest claimed: 2015-09-18 - Assignees: Boe Technology Group Co., Ltd. - Applicants: Boe Technology Group Co., Ltd. - Inventors: Wenbin Jia; Ronggang Shangguan; Xinwei Gao; Guangcai Yuan - Web page: https://patentgrep.com/patent/US10121422B2 ## CPC - G09G 3/36: using liquid crystals - G02F 1/0128: {based on electro-mechanical, magneto-mechanical, elasto-optic effects} - G02F 1/133: Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements (arrangements or circuits for control of liquid crystal elements in a matrix, not structurally associated with these elements G09G3/36) - G02F 1/0131: {based on photo-elastic effects, e.g. mechanically induced birefringence} - G02F 2203/12: spatial light modulator - G02F 2203/62: Switchable arrangements whereby the element being usually not switchable - G09G 2300/0426: Layout of electrodes and connections - G09G: ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION (arrangements for transferring data between digital computers and displays G06F3/14; static indicating arrangements comprising an association of a number of separate sources or light control cells G09F9/00; static indicating arrangements comprising integral associations of a number of light sources H01J, H01K, H10H, H05B33/12; scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission, details thereof H04N1/00) - 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 ## Abstract A display device includes: a plurality of pixel units, where each pixel unit includes two suppression color changing sub-pixel units configured for exciting light waves of different colors. Each suppression color changing sub-pixel unit includes: a first transparent electrostatic sheet and a second transparent electrostatic sheet which are disposed opposite to each other and insulated from each other, where the first transparent electrostatic sheet is disposed on a substrate and the second transparent electrostatic sheet is disposed on the first transparent electrostatic sheet. The display device further includes: a suppression color changing light emitting layer disposed between the first transparent electrostatic sheet and the second transparent electrostatic sheet; and a transparent pressure deformation sensor disposed at a side of the second transparent electrostatic that is away from the substrate. ## Claims ### Claim 1 A display device, comprising: a plurality of pixel units, wherein each pixel unit comprises two suppression color changing sub-pixel units configured for exciting light waves of different colors, each suppression color changing sub-pixel unit comprises: a first transparent electrostatic sheet and a second transparent electrostatic sheet which are disposed opposite to each other and insulated from each other, wherein the first transparent electrostatic sheet is disposed on a substrate and the second transparent electrostatic sheet is disposed on the first transparent electrostatic sheet; a suppression color changing light emitting layer, disposed between the first transparent electrostatic sheet and the second transparent electrostatic sheet, and configured to emit a corresponding light wave according to an imposed stress; and a transparent pressure deformation sensor, disposed at a side of the second transparent electrostatic sheet that is away from the substrate, and configured to sense and feedback the imposed stress for controlling a wavelength of the emitted corresponding light wave. ### Claim 2 (depends on 1) The display device according to claim 1, wherein the suppression color changing light emitting layer is a reversible suppression color changing light emitting layer. ### Claim 3 (depends on 1) The display device according to claim 1, wherein the two suppression color changing sub-pixel units of each pixel unit comprise two reversible suppression color changing light emitting layers, and wavelengths of lights emitted from the two reversible suppression color changing light emitting layers are between 430 nm and 550 nm and between 550 nm and 630 nm respectively. ### Claim 4 (depends on 1) The display device according to claim 1, further comprising a black matrix, wherein the suppression color changing light emitting layer is disposed in a grid hole of the black matrix. ### Claim 5 (depends on 1) The display device according to claim 1, wherein each suppression color changing sub-pixel unit further comprises an insulation layer disposed between the first transparent electrostatic sheet and the second transparent electrostatic sheet, wherein the suppression color changing light emitting layer is disposed between the insulation layer and the second transparent electrostatic sheet. ### Claim 6 (depends on 5) The display device according to claim 5, further comprising: data signal lines and scan signal lines that extend across each other, wherein the data signal lines and the scan signal lines extend across each other to form a checkerboard shape, and each checkerboard grid corresponds to a region of a pixel unit; and in each region, a control switch is configured to control the suppression color changing sub-pixel unit and to connect with a data signal line and a scan signal line corresponding to the region. ### Claim 7 (depends on 1) The display device according to claim 1, further comprising an excitation light source for providing lights to the suppression color changing sub-pixel units. ### Claim 8 (depends on 7) The display device according to claim 7, wherein the excitation light source is an excitation light source that emits short wave lights. ### Claim 9 (depends on 8) The display device according to claim 8, wherein the excitation light source is an ultraviolet LED. ### Claim 10 (depends on 8) The display device according to claim 8, wherein the excitation light source is a blue LED. ### Claim 11 (depends on 2) The display device according to claim 2, wherein material of the suppression color changing light emitting layer includes a four styrenic class PAIE (piezofluorochromic aggregation-induced emission materials) compound, a cyano ethylene class PAIE compound or a silolo class PAIE compound. ### Claim 12 (depends on 1) The display device according to claim 1, wherein the first transparent electrostatic sheet in each suppression color changing sub-pixel unit is formed by a same transparent electrostatic sheet. ### Claim 13 (depends on 5) The display device according to claim 5, wherein the insulation layer in each suppression color changing sub-pixel unit is formed with a same insulation layer. ### Claim 14 (depends on 7) The display device according to claim 7, wherein the suppression color changing light emitting layer transforms a light emitted from the excitation light source into a light wave with a certain wavelength. ### Claim 15 (depends on 2) The display device according to claim 2, wherein each suppression color changing sub-pixel unit further comprises an insulation layer disposed between the first transparent electrostatic sheet and the second transparent electrostatic sheet, wherein the suppression color changing light emitting layer is disposed between the insulation layer and the second transparent electrostatic sheet. ### Claim 16 (depends on 3) The display device according to claim 3, wherein each suppression color changing sub-pixel unit further comprises an insulation layer disposed between the first transparent electrostatic sheet and the second transparent electrostatic sheet, wherein the suppression color changing light emitting layer is disposed between the insulation layer and the second transparent electrostatic sheet. ### Claim 17 (depends on 4) The display device according to claim 4, wherein each suppression color changing sub-pixel unit further comprises an insulation layer disposed between the first transparent electrostatic sheet and the second transparent electrostatic sheet, wherein the suppression color changing light emitting layer is disposed between the insulation layer and the second transparent electrostatic sheet.