# US 2017/0285358 A1 · Display Substrate And Manufacturing Method Thereof, Display Driving Method, 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 2017/0285358 A1 - Document ID: US20170285358A1 - Status: Published application - Kind: A1 - Application number: 15/511,134 - Filed: 2016-04-05 - Published: 2017-10-05 - Earliest claimed: 2015-05-13 - Assignees: Boe Technology Group Co., Ltd.; Beijing Boe Display Technology Co., Ltd. - Applicants: Boe Technology Group Co., Ltd.; Beijing Boe Display Technology Co., Ltd. - Inventors: Chunbing ZHANG - Web page: https://patentgrep.com/patent/US20170285358A1 ## CPC - G02B 30/24: involving temporal multiplexing, e.g. using sequentially activated left and right shutters - 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 1/1333: Constructional arrangements; {Manufacturing methods}(G02F1/135, G02F1/136 take precedence) - G02F 1/133342: {for double-sided displays} - G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS - 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 Embodiments of the present disclosure provide a display substrate and a manufacturing method thereof, a display driving method and a display device. The display substrate includes: a transparent base; a bidirectional light emitting element array emitting light in a first direction and a second direction perpendicular to the transparent base; a first variable grating array transmits or blocks the light emitted by odd-numbered columns of bidirectional light emitting elements in the first direction; a second variable grating array transmits or blocks the light emitted by odd-numbered columns of bidirectional light emitting elements in the second direction; a third variable grating array transmits or blocks the light emitted by even-numbered columns of bidirectional light emitting elements in the first direction; and a fourth variable grating array transmits or blocks the light emitted by even-numbered columns of bidirectional light emitting elements in the second direction. Multiple display modes can be realized. ## Claims ### Claim 1 A display substrate comprising: a transparent base; a bidirectional light emitting element array formed on the transparent base, wherein the bidirectional light emitting element array comprises a plurality of bidirectional light emitting elements configured to emit light in a first direction and a second direction perpendicular to the transparent base; a first variable grating array configured to transmit or block the light emitted by odd-numbered columns of bidirectional light emitting elements in the first direction; a second variable grating array configured to transmit or block the light emitted by odd-numbered columns of bidirectional light emitting elements in the second direction; a third variable grating array configured to transmit or block the light emitted by even-numbered columns of bidirectional light emitting elements in the first direction; and a fourth variable grating array configured to transmit or block the light emitted by even-numbered columns of bidirectional light emitting elements in the second direction; wherein the variable grating arrays are configured to realize the transition between a transparent state and an opaque state under the control of a control signal to transmit or block the emitted light. ### Claim 2 (depends on 1) The display substrate according to claim 1, wherein the odd-numbered columns of bidirectional light emitting elements are formed on the first direction side of the transparent base, and wherein the even-numbered columns of bidirectional light emitting elements are formed on the second direction side of the transparent base. ### Claim 3 (depends on 2) The display substrate according to claim 2, wherein the second variable grating array is formed on the surface of the transparent base toward the first direction, wherein the odd-numbered columns of bidirectional light emitting elements are formed on the surface of the second variable grating array toward the first direction, wherein the third variable grating array is formed on the surface of the transparent base toward the second direction, and wherein the even-numbered columns of bidirectional light emitting elements are formed on the surface of the third variable grating array toward the second direction; and wherein the display substrate further comprises a first transparent cover plate and a second transparent cover plate, wherein the first transparent cover plate is arranged on the first direction side of the odd-numbered columns of bidirectional light emitting elements, wherein the first variable grating array is formed on the first transparent cover plate, wherein the second transparent cover plate is arranged on the second direction side of the even-numbered columns of bidirectional light emitting elements, and wherein the fourth variable grating array is formed on the second transparent cover plate. ### Claim 4 (depends on 1) The display substrate according to claim 1, wherein each variable grating array comprises a plurality of strip-shaped electrode cases, and wherein the strip-shaped electrode case comprises a transparent case body, a first pair of electrode plates and a second pair of electrode plates formed on the inner side walls of the transparent case body, a transparent liquid filled in the transparent case body, and opaque charged particles mixed in the transparent liquid; and wherein the first pair of electrode plates are perpendicular to the transparent base and are configured to form an electric field parallel to the transparent base, and wherein the second pair of electrode plates are parallel to the transparent base and are configured to form an electric field perpendicular to the transparent base. ### Claim 5 (depends on 4) The display substrate according to claim 4, wherein in each variable grating array, every strip-shaped electrode case is connected to the same control signal input terminal. ### Claim 6 (depends on 1) The display substrate according to claim 1, wherein the bidirectional light emitting element comprises a first transparent electrode, a second transparent electrode, and a light emitting layer positioned between the first transparent electrode and the second transparent electrode. ### Claim 7 (depends on 1) The display substrate according to claim 1, wherein the bidirectional light emitting element is a color photoelectroluminescent element, and wherein the bidirectional light emitting element array comprises bidirectional light emitting elements of N colors; wherein among any N consecutive columns of bidirectional light emitting elements, the color of light emitted by each column of bidirectional light emitting elements is different from the colors of light emitted by other columns of bidirectional light emitting elements, wherein for the odd-numbered columns of bidirectional light emitting elements, among any N consecutive columns of bidirectional light emitting elements, the color of light emitted by each column of bidirectional light emitting elements is different from the colors of light emitted by other columns of bidirectional light emitting elements; and wherein for the even-numbered columns of bidirectional light emitting elements, among any N consecutive columns of bidirectional light emitting elements, the color of light emitted by each column of bidirectional light emitting elements is different from the colors of light emitted by other columns of bidirectional light emitting elements. ### Claim 8 (depends on 1) A display driving method for driving the display substrate according to claim 1, comprising: applying a control signal to make the first variable grating array and the third variable grating array transparent and make other variable grating arrays opaque to perform single-sided 2D display in the first direction; applying a control signal to make the second variable grating array and the fourth variable grating array transparent and make other variable grating arrays opaque to perform single-sided 2D display in the second direction; and applying a control signal to make the first variable grating array and the fourth variable grating array transparent and make other variable grating arrays opaque to perform double-sided 2D display. ### Claim 9 (depends on 8) The display driving method according to claim 8, further comprising: applying a control signal to make the third variable grating array transparent and make other variable grating arrays opaque to perform 3D display in the first direction; and applying a control signal to make the second variable grating array transparent and make other variable grating arrays opaque to perform 3D display in the second direction. ### Claim 10 A manufacturing method for a display substrate, comprising: forming a transparent base; and forming a bidirectional light emitting element array and a plurality of variable grating arrays on the transparent base; wherein the bidirectional light emitting element array comprises a plurality of bidirectional light emitting elements configured to emit light in a first direction and a second direction perpendicular to the transparent base; wherein the plurality of variable grating arrays comprise a first variable grating array, a second variable grating array, a third variable grating array, and a fourth variable grating array, wherein the first variable grating array is configured to transmit or block the light emitted by odd-numbered columns of bidirectional light emitting elements in the first direction, wherein the second variable grating array is configured to transmit or block the light emitted by odd-numbered columns of bidirectional light emitting elements in the second direction, wherein the third variable grating array is configured to transmit or block the light emitted by even-numbered columns of bidirectional light emitting elements in the first direction, wherein the fourth variable grating array is configured to transmit or block the light emitted by even-numbered columns of bidirectional light emitting elements in the second direction, and wherein the variable grating arrays are configured to realize the transition between a transparent state and an opaque state under the control of a control signal to transmit or block the emitted light. ### Claim 11 (depends on 10) The method according to claim 10, wherein forming a bidirectional light emitting element array on the transparent base comprises: forming odd-numbered columns of bidirectional light emitting elements on the first direction side of the transparent base, and forming even-numbered columns of bidirectional light emitting elements on the second direction side of the transparent base. ### Claim 12 (depends on 1) A display device comprising the display substrate according to claim 1. ### Claim 13 (depends on 2) The display substrate according to claim 2, wherein each variable grating array comprises a plurality of strip-shaped electrode cases, and wherein the strip-shaped electrode case comprises a transparent case body, a first pair of electrode plates and a second pair of electrode plates formed on the inner side walls of the transparent case body, a transparent liquid filled in the transparent case body, and opaque charged particles mixed in the transparent liquid; and wherein the first pair of electrode plates are perpendicular to the transparent base and are configured to form an electric field parallel to the transparent base, and wherein the second pair of electrode plates are parallel to the transparent base and are configured to form an electric field perpendicular to the transparent base. ### Claim 14 (depends on 3) The display substrate according to claim 3, wherein each variable grating array comprises a plurality of strip-shaped electrode cases, and wherein the strip-shaped electrode case comprises a transparent case body, a first pair of electrode plates and a second pair of electrode plates formed on the inner side walls of the transparent case body, a transparent liquid filled in the transparent case body, and opaque charged particles mixed in the transparent liquid; and wherein the first pair of electrode plates are perpendicular to the transparent base and are configured to form an electric field parallel to the transparent base, and wherein the second pair of electrode plates are parallel to the transparent base and are configured to form an electric field perpendicular to the transparent base. ### Claim 15 (depends on 8) The display driving method according to claim 8, wherein the odd-numbered columns of bidirectional light emitting elements are formed on the first direction side of the transparent base, and wherein the even-numbered columns of bidirectional light emitting elements are formed on the second direction side of the transparent base. ### Claim 16 (depends on 8) The display driving method according to claim 8, wherein the second variable grating array is formed on the surface of the transparent base toward the first direction, wherein the odd-numbered columns of bidirectional light emitting elements are formed on the surface of the second variable grating array toward the first direction, wherein the third variable grating array is formed on the surface of the transparent base toward the second direction, and wherein the even-numbered columns of bidirectional light emitting elements are formed on the surface of the third variable grating array toward the second direction; and wherein the display substrate further comprises a first transparent cover plate and a second transparent cover plate, wherein the first transparent cover plate is arranged on the first direction side of the odd-numbered columns of bidirectional light emitting elements, wherein the first variable grating array is formed on the first transparent cover plate, wherein the second transparent cover plate is arranged on the second direction side of the even-numbered columns of bidirectional light emitting elements, and wherein the fourth variable grating array is formed on the second transparent cover plate. ### Claim 17 (depends on 8) The display driving method according to claim 8, wherein each variable grating array comprises a plurality of strip-shaped electrode cases, and wherein the strip-shaped electrode case comprises a transparent case body, a first pair of electrode plates and a second pair of electrode plates formed on the inner side walls of the transparent case body, a transparent liquid filled in the transparent case body, and opaque charged particles mixed in the transparent liquid; and wherein the first pair of electrode plates are perpendicular to the transparent base and are configured to form an electric field parallel to the transparent base, and wherein the second pair of electrode plates are parallel to the transparent base and are configured to form an electric field perpendicular to the transparent base. ### Claim 18 (depends on 8) The display driving method according to claim 8, wherein in each variable grating array, every strip-shaped electrode case is connected to the same control signal input terminal. ### Claim 19 (depends on 8) The display driving method according to claim 8, wherein the bidirectional light emitting element comprises a first transparent electrode, a second transparent electrode, and a light emitting layer positioned between the first transparent electrode and the second transparent electrode. ### Claim 20 (depends on 8) The display driving method according to claim 8, wherein the bidirectional light emitting element is a color photoelectroluminescent element, and wherein the bidirectional light emitting element array comprises bidirectional light emitting elements of N colors; wherein among any N consecutive columns of bidirectional light emitting elements, the color of light emitted by each column of bidirectional light emitting elements is different from the colors of light emitted by other columns of bidirectional light emitting elements, wherein for the odd-numbered columns of bidirectional light emitting elements, among any N consecutive columns of bidirectional light emitting elements, the color of light emitted by each column of bidirectional light emitting elements is different from the colors of light emitted by other columns of bidirectional light emitting elements; and wherein for the even-numbered columns of bidirectional light emitting elements, among any N consecutive columns of bidirectional light emitting elements, the color of light emitted by each column of bidirectional light emitting elements is different from the colors of light emitted by other columns of bidirectional light emitting elements.