# US 11,112,651 B1 · Liquid crystal display device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,112,651 B1 - Document ID: US11112651B1 - Status: Granted - Kind: B1 - Application number: 16/976,438 - Filed: 2020-05-11 - Granted: 2021-09-07 - Earliest claimed: 2020-04-14 - Assignees: Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd. - Applicants: Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd. - Inventors: Xin Zhang; Hu Dou; Chunchi Chen - Web page: https://patentgrep.com/patent/US11112651B1 ## CPC - G02F 1/133524: {Light-guides, e.g. fibre-optic bundles, louvered or jalousie light-guides} - G02F 1/133606: {including a specially adapted diffusing, scattering or light controlling members} - G02F 1/133504: {Diffusing, scattering, diffracting elements (associated to illuminating devices G02F1/133606)} - G02F 1/133565: {inside the LC elements, i.e. between the cell substrates} - G02F 1/1336: {Illuminating devices} - G02F 1/133607: {the light controlling member including light directing or refracting elements, e.g. prisms or lenses} - G02F 1/133707: {Structures for producing distorted electric fields, e.g. bumps, protrusions, recesses, slits in pixel electrodes} - G02F 2202/42: Materials having a particular dielectric constant - 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 liquid crystal display device provided by the present invention includes a backlight source, a light path modulation box and a liquid crystal display panel. The light path modulation box is disposed on the backlight source. The light path modulation box is configured to modulate light emitted out from the backlight source such that backlight is emitted out along a direction perpendicular to the light path modulation box. The liquid crystal display panel is disposed on the light path modulation box. The backlight emitted by the backlight source passes through the light path modulation box and enters the liquid crystal display panel. ## Claims ### Claim 1 A liquid crystal display device, comprising: a backlight source; a light path modulation box, disposed on the backlight source, wherein the light path modulation box is configured to modulate backlight emitted by the backlight source such that the backlight is emitted out along a direction perpendicular to the light path modulation box, the light path modulation box comprises a first substrate, a second substrate, and a liquid crystal layer disposed between the first substrate and the second substrate, wherein the first substrate comprises a first base, a pixel electrode layer disposed on the first base, and a dielectric layer disposed on the pixel electrode layer, and the second substrate comprises a second base and a common electrode layer disposed on the second base; and a liquid crystal display panel, disposed on the light path modulation box, wherein the backlight emitted by the backlight source enters the liquid crystal display panel through the light path modulation box, and two polarizers are disposed respectively on a surface of the light path modulation box near the liquid crystal display panel and a surface of the light path modulation box near the backlight source; wherein the pixel electrode layer comprises a plurality of pixel electrodes disposed at intervals, a gap is defined between adjacent two of the pixel electrodes, and the dielectric layer forms a curved structure in the gap; wherein the curved structure comprises a first portion and a second portion disposed symmetrically opposite to each other in the gap, and both the first portion and the second portion are curved and are substantially quarter-circular in shape. ### Claim 2 (depends on 1) The liquid crystal display device as claimed in claim 1, wherein the liquid crystal layer comprises a plurality of liquid crystal molecules, and the liquid crystal molecules are arranged in an array. ### Claim 3 (depends on 2) The liquid crystal display device as claimed in claim 2, wherein a refractive index of the dielectric layer is greater than a normal refractive index of the liquid crystal molecules, and the refractive index of the dielectric layer is equal to an abnormal refractive index of the liquid crystal molecules. ### Claim 4 (depends on 1) The liquid crystal display device as claimed in claim 1, wherein a thickness of the liquid crystal layer is greater than or equal to a thickness of the dielectric layer. ### Claim 5 (depends on 1) The liquid crystal display device as claimed in claim 1, wherein the dielectric layer comprises a plurality of dielectric blocks, the pixel electrodes correspond to the dielectric blocks, and each of the pixel electrodes is disposed in one of the dielectric blocks; and in adjacent two of the dielectric blocks, both the two dielectric blocks extend into the gap to form the curved structures. ### Claim 6 (depends on 2) The liquid crystal display device as claimed in claim 2, wherein the liquid crystal display device comprises a normal display status and an abnormal modulation status; when the liquid crystal display device is in the normal display status, a longitudinal axis of the liquid crystal molecules is parallel to a first direction, and the first direction is a direction parallel to a boundary line between the liquid crystal layer and the second substrate; and when the liquid crystal display device is in the abnormal modulation status, the longitudinal axis of the liquid crystal molecules is parallel to a second direction, the second direction is a direction perpendicular to the boundary line between the liquid crystal layer and the second substrate.