# US 10,120,260 B2 · Viewing angle controlling light source device and display apparatus > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,120,260 B2 - Document ID: US10120260B2 - Status: Granted - Kind: B2 - Application number: 15/541,978 - Filed: 2016-11-17 - Published: 2017-12-28 - Granted: 2018-11-06 - Earliest claimed: 2016-01-08 - 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: Chenru Wang; Xue Dong; Haiwei Sun; Ruijun Dong; Lu Yu; Lili Chen - Web page: https://patentgrep.com/patent/US10120260B2 ## CPC - G02F 1/29: for the control of the position or the direction of light beams, i.e. deflection - G02B 30/27: involving lenticular arrays - G02F 1/1323: {Arrangements for providing a switchable viewing angle} - G02F 1/133606: {including a specially adapted diffusing, scattering or light controlling members} - H04N 13/305: using lenticular lenses, e.g. arrangements of cylindrical lenses - G02F 1/291: {Two-dimensional analogue deflection} - G02F 2201/44: Arrangements combining different electro-active layers, e.g. electrochromic, liquid crystal or electroluminescent layers - G02F 2203/24: beam steering - G02F 2203/58: Multi-wavelength, e.g. operation of the device at a plurality of wavelengths - 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 - G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS - H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION ## Abstract A viewing angle controlling light source device and a display apparatus are provided. The viewing angle controlling light source device includes a base substrate; a light emitting array arranged on the base substrate, wherein the light emitting array includes a plurality of light emitting units; at least one liquid crystal lens array arranged on the light emitting array, wherein the liquid crystal lens array includes a plurality of liquid crystal lens units corresponding to the light emitting units one by one, each liquid crystal lens unit includes a first electrode and a second electrode, and a liquid crystal layer arranged between the first electrode and the second electrode, a light emergent direction of light emitted by the light emitting unit after the light transmitting through the liquid crystal lens unit by regulating a voltage difference between the first electrode and the second electrode. ## Claims ### Claim 1 A viewing angle controlling light source device, comprising: a base substrate; a light emitting array arranged on the base substrate, wherein the light emitting array comprises a plurality of light emitting units; and at least one liquid crystal lens array arranged on the light emitting array, wherein the liquid crystal lens array comprises a plurality of liquid crystal lens units corresponding to the light emitting units one by one; wherein each of the liquid crystal lens units comprises a first electrode disposed on a first base, a second electrode disposed on a second base, and a liquid crystal layer arranged between the first electrode and the second electrode; the first electrode and the second electrode are oppositely arranged; the first electrode and the second electrode are configured to apply voltages respectively; and each of the liquid crystal lens units is configured to adjust a light emergent direction of light emitted by the light emitting units after the light transmitting through the liquid crystal lens unit by regulating a voltage difference between the first electrode and the second electrode. ### Claim 2 (depends on 1) The viewing angle controlling light source device according to claim 1, wherein a plurality of liquid crystal lens arrays are arranged on the light emitting array. ### Claim 3 (depends on 2) The viewing angle controlling light source device according to claim 2, wherein the first electrode and the second electrode of the liquid crystal lens unit of each liquid crystal lens array are configured to generate a voltage difference, so that in a direction perpendicular to the base substrate, refractive indexes of the liquid crystal layers of the liquid crystal lens units of the plurality of liquid crystal lens arrays present gradient change. ### Claim 4 (depends on 3) The viewing angle controlling light source device according to claim 3, wherein a refractive index of a liquid crystal layer of a liquid crystal lens unit closer to a light emergent side is less than that of a liquid crystal layer of a liquid crystal lens unit farther away from the light emergent side. ### Claim 5 (depends on 1) The viewing angle controlling light source device according to claim 1, wherein the plurality of light emitting units comprise electroluminescence chips capable of emitting light of different wave lengths. ### Claim 6 (depends on 5) The viewing angle controlling light source device according to claim 5, wherein the electroluminescence chips capable of emitting light of different wave lengths comprise: a red light emitting chip, a green light emitting chip and a blue light emitting chip. ### Claim 7 (depends on 1) The viewing angle controlling light source device according to claim 1, wherein the plurality of light emitting units are white light emitting chips. ### Claim 8 (depends on 1) The viewing angle controlling light source device according to claim 1, wherein the base substrate is composed of a base made of glass or copper material, and graphene, gallium nitride or silicon material disposed on the base. ### Claim 9 (depends on 1) A display apparatus, comprising the viewing angle controlling light source device according to claim 1. ### Claim 10 (depends on 9) The display apparatus according to claim 9, further comprising a display module arranged on a side of the light emergent surface of the viewing angle controlling light source device. ### Claim 11 (depends on 10) The display apparatus according to claim 10, wherein the display module comprises a pixel array, and the pixel array comprises pixel units corresponding to the light emitting units one by one. ### Claim 12 (depends on 10) The display apparatus according to claim 10, wherein the plurality of light emitting units in the viewing angle controlling light source device comprise electroluminescence chips capable of emitting light of different wave lengths, and the display module comprises an array substrate and an opposed substrate which are oppositely arranged. ### Claim 13 (depends on 10) The display apparatus according to claim 10, wherein the plurality of light emitting units in the viewing angle controlling light source device are white light emitting chips, and the display module comprises an array substrate and a color film substrate which are oppositely arranged. ### Claim 14 (depends on 2) The viewing angle controlling light source device according to claim 2, wherein the plurality of light emitting units comprise electroluminescence chips capable of emitting light of different wave lengths. ### Claim 15 (depends on 3) The viewing angle controlling light source device according to claim 3, wherein the plurality of light emitting units comprise electroluminescence chips capable of emitting light of different wave lengths. ### Claim 16 (depends on 4) The viewing angle controlling light source device according to claim 4, wherein the plurality of light emitting units comprise electroluminescence chips capable of emitting light of different wave lengths. ### Claim 17 (depends on 2) The viewing angle controlling light source device according to claim 2, wherein the plurality of light emitting units are white light emitting chips. ### Claim 18 (depends on 3) The viewing angle controlling light source device according to claim 3, wherein the plurality of light emitting units are white light emitting chips. ### Claim 19 (depends on 2) The viewing angle controlling light source device according to claim 2, wherein the base substrate is composed of a base made of glass or copper material, and graphene, gallium nitride or silicon material disposed on the base. ### Claim 20 (depends on 3) The viewing angle controlling light source device according to claim 3, wherein the base substrate is composed of a base made of glass or copper material, and graphene, gallium nitride or silicon material disposed on the base. ### Claim 21 (depends on 1) The viewing angle controlling light source device according to claim 1, wherein the liquid crystal layer is made of cholesteric liquid crystal, nematic liquid crystal or smectic liquid crystal.