# US 10,768,463 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 10,768,463 B2 - Document ID: US10768463B2 - Status: Granted - Kind: B2 - Application number: 15/814,623 - Filed: 2017-11-16 - Published: 2018-06-07 - Granted: 2020-09-08 - Earliest claimed: 2016-12-05 - Assignees: Samsung Display Co., Ltd. - Applicants: Samsung Display Co., Ltd. - Inventors: Yun Jong Yeo; Seon Il Kim; Ji Hun Kim; Sung Won Cho; Sang Youn Han - Web page: https://patentgrep.com/patent/US10768463B2 ## CPC - G02F 1/13338: {Input devices, e.g. touch panels} - G02F 1/133514: {Colour filters} - G02F 1/133602: {Direct backlight} - G02F 1/133617: {Illumination with ultraviolet light; Luminescent elements or materials associated to the cell} - G06F 3/0412: {Digitisers structurally integrated in a display} - G06F 3/042: by opto-electronic means - G02F 2203/11: involving infrared radiation - 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 - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) ## Abstract Provided herein may be a display device. The display device may include a first substrate including a first substrate having a plurality of pixel areas; a second substrate having a second base substrate facing the first substrate, first to third color filters provided on the second base substrate, the first to third color filters being respectively disposed on locations corresponding to respective pixel areas of the plurality of pixel areas and embodying different colors, and an infrared sensor disposed between the plurality of pixel areas in a plan view and configured to sense infrared light; a liquid crystal layer disposed between the first substrate and the second substrate; and a backlight unit configured to provide single-color light to the liquid crystal layer. At least one of the first to third color filters may include infrared quantum dot material which converts light provided from the backlight unit into infrared light. ## Claims ### Claim 1 A display device comprising: a first substrate comprising a plurality of pixel areas; a second substrate comprising a second base substrate facing the first substrate, first to third color filters provided on the second base substrate, the first to third color filters being respectively disposed on locations corresponding to respective pixel areas of the plurality of pixel areas and each embodying different colors from each other, and an infrared sensor disposed between the plurality of pixel areas and configured to sense infrared light; and a light source configured to provide single-color light to the second substrate, wherein at least one of the first to third color filters includes, in a portion embodying one of the different colors, infrared quantum dot material which is configured to convert visible light provided from the light source into infrared light. ### Claim 2 (depends on 1) The display device of claim 1, wherein the light source provides blue light, wherein the first color filter includes red quantum dot material which converts the blue light into red light, wherein the second color filter includes green quantum dot material which converts the blue light into green light, and wherein the third color filter allows the blue light to pass therethrough. ### Claim 3 (depends on 2) The display device of claim 2, wherein each of the first to third color filters includes the infrared quantum dot material. ### Claim 4 (depends on 2) The display device of claim 2, wherein the third color filter includes scattering particles which scatters the blue light. ### Claim 5 (depends on 2) The display device of claim 2, wherein the first color filter comprises a red quantum dot area including the red quantum dot material, and a first infrared quantum dot area including the infrared quantum dot material, and wherein the second color filter comprises a green quantum dot area including the green quantum dot material, and a second infrared quantum dot area including the infrared quantum dot material. ### Claim 6 (depends on 2) The display device of claim 2, wherein any one of the first to third color filters includes first infrared quantum dot material which converts the blue light into first infrared light, wherein another one of the first to third color filters includes second infrared quantum dot material which converts the blue light into second infrared light, and wherein the first infrared light and the second infrared light have different wavelength bands. ### Claim 7 (depends on 6) The display device of claim 6, wherein the infrared sensor comprises: a first infrared sensor configured to sense the first infrared light, and a second infrared sensor configured to sense the second infrared light. ### Claim 8 (depends on 7) The display device of claim 7, wherein the first infrared sensor and the second infrared sensor are alternately arranged. ### Claim 9 (depends on 1) The display device of claim 1, wherein the second substrate further comprises: a light blocking pattern disposed on the second base substrate, and configured to expose the first to third color filters. ### Claim 10 (depends on 1) The display device of claim 1, wherein the first substrate comprises a first base substrate, and a first driving layer including a pixel electrode disposed on a first surface of the first base substrate, and wherein the second substrate further comprises a second driving layer including a common electrode. ### Claim 11 (depends on 10) The display device of claim 10, further comprising: a liquid crystal layer disposed between the first substrate and the second substrate, wherein the light source is a backlight unit configured to provide the single-color light to the liquid crystal layer. ### Claim 12 (depends on 10) The display device of claim 10, further comprising: a first polarizing layer disposed on a second surface of the first base substrate; and a second polarizing layer disposed between the second base substrate and the second driving layer. ### Claim 13 A display device comprising: a first substrate comprising a plurality of pixel areas; a second substrate facing the first substrate; a light source configured to provide single-color light to the second substrate, and a light blocking pattern disposed between the plurality of pixel areas, wherein the second substrate includes an infrared light emitting area which includes infrared quantum dot material which is configured to convert visible light provided from the light source into infrared light, and wherein the light blocking pattern does not overlap any infrared quantum dot materials in a plan view. ### Claim 14 (depends on 13) The display device of claim 13, wherein the infrared light emitting area further includes a quantum dot material which converts the single-color light provided from the light source into a specific color light. ### Claim 15 (depends on 13) The display device of claim 13, further comprising: a liquid crystal layer disposed between the first substrate and the second substrate, wherein the light source is a backlight unit configured to provide the single-color light to the liquid crystal layer.