# US 11,994,777 B2 · Display panel 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 11,994,777 B2 - Document ID: US11994777B2 - Status: Granted - Kind: B2 - Application number: 17/440,185 - Filed: 2021-07-21 - Published: 2024-02-01 - Granted: 2024-05-28 - Earliest claimed: 2021-07-12 - Assignees: Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd. - Applicants: Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd. - Inventors: Baolin Chi - Web page: https://patentgrep.com/patent/US11994777B2 ## CPC - G02F 1/136209: {Light shielding layers, e.g. black matrix, incorporated in the active matrix substrate, e.g. structurally associated with the switching element} - G02F 1/136218: {Shield electrodes} - G02F 1/133377: {Cells with plural compartments or having plurality of liquid crystal microcells partitioned by walls, e.g. one microcell per pixel} - G02F 1/133512: {Light shielding layers, e.g. black matrix (G02F1/136209 takes precedence)} - G02F 1/134309: {characterised by their geometrical arrangement} - G02F 1/134363: {for applying an electric field parallel to the substrate, i.e. in-plane switching [IPS]} - G02F 1/136286: {Wiring, e.g. gate line, drain line} - 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 The present application discloses a display panel and a display device. The display panel includes a plurality of pixel electrodes and a common electrode arranged correspondingly, and a plurality of light shielding electrodes, by opening holes on the common electrode corresponding to the light-shielding electrode or adjust a preset voltage on the light-shielding electrode, a vertical electric field is formed between the common electrode and the corresponding light-shielding electrode, which hinders a lateral movement of impurity ions and relieves a problem of line residue of currently LCD panels. ## Claims ### Claim 1 A display panel, comprising: a first substrate, a second substrate disposed opposite to the first substrate, and a liquid crystal layer disposed between the first substrate and the second substrate, wherein the display panel further comprises: a plurality of pixel electrodes disposed in an array on a side of the first substrate facing the second substrate, wherein adjacent pixel electrodes are disposed with intervals; a plurality of light shielding electrodes disposed in a same layer as the plurality of pixel electrodes, wherein each light-shielding electrode is correspondingly arranged in the interval; and a common electrode disposed on a side of the second substrate facing the first substrate; wherein an edge of the first substrate is provided with a binding terminal, the plurality of light shielding electrodes are electrically connected to the binding terminal, and the binding terminal is configured to provide a preset voltage to the plurality of light shielding electrodes to form electric field between the common electrode and the corresponding light-shielding electrode; wherein the preset voltage of the light-shielding electrode is equal to a voltage of the common electrode, and the common electrode is provided with an opening in a region opposite to the light-shielding electrode to form a vertical electric field between the common electrode and the corresponding light-shielding electrode. ### Claim 2 (depends on 1) The display panel according to claim 1, wherein the display panel is divided into a plurality of partitions, each of the partitions includes a plurality of pixel electrodes, and the common electrode corresponding to the light shielding electrode at a junction of adjacent partitions is provided with the opening. ### Claim 3 (depends on 2) The display panel according to claim 2, wherein an orthographic projection of the opening on the first substrate falls within a range of an orthographic projection of the light shielding electrode on the first substrate. ### Claim 4 (depends on 3) The display panel according to claim 3, wherein a number of the openings provided on the common electrode corresponding to each of the light shielding electrodes ranges from 2 to 20. ### Claim 5 (depends on 4) The display panel according to claim 4, wherein a width of the opening ranges from 6 micrometers to 15 micrometers, and a length of the opening ranges from 6 micrometers to 100 micrometers. ### Claim 6 (depends on 4) The display panel according to claim 4, wherein the plurality of the openings are uniformly arranged on the corresponding common electrode. ### Claim 7 (depends on 3) The display panel according to claim 3, wherein a shape of the opening comprises at least one shape selected from a square, a circle, a diamond, a triangle, and a trapezoid. ### Claim 8 (depends on 1) The display panel according to claim 1, wherein the display panel further comprises a plurality of data lines arranged in parallel and spaced along a first direction and a plurality of gate scan lines arranged in parallel and spaced along a second direction, the plurality of data lines and the plurality of gate scan lines are intersected to define a plurality of pixel regions, the plurality of pixel electrodes are respectively arranged in different pixel regions, the plurality of light shielding electrodes are disposed corresponding to the data line and/or the gate scan line, and a width of the light shielding electrode is greater than a width of the data line and a width of the gate scan line. ### Claim 9 A display device comprising a display panel, and a backlight module disposed opposite to the display panel, wherein the display panel comprises a first substrate, a second substrate disposed opposite to the first substrate, and a liquid crystal layer disposed between the first substrate and the second substrate, and wherein the display panel further comprises: a plurality of pixel electrodes disposed in an array on a side of the first substrate facing the second substrate, wherein adjacent pixel electrodes are disposed with intervals; a plurality of light shielding electrodes disposed in a same layer as the plurality of pixel electrodes, wherein each light-shielding electrode is correspondingly arranged in the interval; and a common electrode disposed on a side of the second substrate facing the first substrate; wherein an edge of the first substrate is provided with a binding terminal, the plurality of light-shielding electrode are electrically connected to the binding terminal, and the binding terminal is configured to provide a preset voltage to the plurality of light shielding electrodes to form electric field between the common electrode and the corresponding light-shielding electrode; wherein the preset voltage of the light-shielding electrode is equal to a voltage of the common electrode, and the common electrode is provided with an opening in a region opposite to the light-shielding electrode to form a vertical electric field between the common electrode and the corresponding light-shielding electrode. ### Claim 10 (depends on 9) The display device according to claim 9, wherein the display panel is divided into a plurality of partitions, each of the partitions includes a plurality of pixel electrodes, and the common electrode corresponding to the light shielding electrode at a junction of adjacent partitions is provided with the opening. ### Claim 11 (depends on 10) The display device according to claim 10, wherein an orthographic projection of the opening on the first substrate falls within a range of an orthographic projection of the light shielding electrode on the first substrate. ### Claim 12 (depends on 11) The display device according to claim 11, wherein a number of the openings provided on the common electrode corresponding to each of the light shielding electrodes ranges from 2 to 20. ### Claim 13 (depends on 12) The display device according to claim 12, wherein a width of the opening ranges from 6 micrometers to 15 micrometers, and a length of the opening ranges from 6 micrometers to 100 micrometers. ### Claim 14 (depends on 12) The display device according to claim 12, wherein the plurality of the openings are uniformly arranged on the corresponding common electrode. ### Claim 15 (depends on 11) The display device according to claim 11, wherein a shape of the opening comprises at least one shape selected from a square, a circle, a diamond, a triangle, and a trapezoid. ### Claim 16 (depends on 9) The display device according to claim 9, wherein the display panel further comprises a plurality of data lines arranged in parallel and spaced along a first direction and a plurality of gate scan lines arranged in parallel and spaced along a second direction, the plurality of data lines and the plurality of gate scan lines are intersected to define a plurality of pixel regions, the plurality of pixel electrodes are respectively arranged in different pixel regions, the plurality of light shielding electrodes are disposed corresponding to the data line and/or the gate scan line, and a width of the light shielding electrode is greater than a width of the data line and a width of the gate scan line.