# US 2010/0164906 A1 · Display panel, module, and electronic device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2010/0164906 A1 - Document ID: US20100164906A1 - Status: Published application - Kind: A1 - Application number: 12/643,598 - Filed: 2009-12-21 - Published: 2010-07-01 - Earliest claimed: 2008-12-25 - Assignees: Sony Corporation - Inventors: Yoko Fukunaga; Tetsuro Ochi; Daisuke Takama; Yasuyuki Matsui - Web page: https://patentgrep.com/patent/US20100164906A1 ## CPC - G06F 3/0412: {Digitisers structurally integrated in a display} - G06F 3/042: by opto-electronic means - H10K 59/40: OLEDs integrated with touch screens - H10K 59/38: comprising colour filters or colour changing media [CCM] - H10K 59/60: OLEDs integrated with inorganic light-sensitive elements, e.g. with inorganic solar cells or inorganic photodiodes - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) - H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES ## Abstract A display panel, ensuring high photo-detection accuracy in a region near a frame area, is provided. The display panel includes: image display elements disposed in an effective display area of a display screen; a light-shielding layer disposed in a frame area around the effective display area; and photo-detection elements disposed in the effective display area or in both of the effective display area and the frame area. The photo-detection elements detect the invisible light. The light-shielding layer transmits invisible light, while shields visible light. ## Claims ### Claim 1 A display panel, comprising: image display elements disposed in an effective display area of a display screen; a light-shielding layer disposed in a frame area around the effective display area, the light-shielding layer transmitting invisible light while shielding visible light; and photo-detection elements disposed in the effective display area or in both of the effective display area and the frame area, the photo-detection elements detecting the invisible light. ### Claim 2 (depends on 1) The display panel according to claim 1, wherein the photo-detection elements are disposed in both the effective display area and the frame area. ### Claim 3 (depends on 1) The display panel according to claim 1, wherein the image display elements are configured of liquid crystal elements. ### Claim 4 (depends on 3) The display panel according to claim 3, wherein the liquid crystal elements includes: a plurality of display pixel electrodes; a common electrode provided facing the display pixel electrodes; and a liquid crystal layer performing image display based on the visible light. ### Claim 5 (depends on 3) The display panel according to claim 3, further comprising, in the frame area, a liquid crystal layer, and a pair of electrodes applying a voltage to the liquid crystal layer to achieve black display. ### Claim 6 (depends on 1) The display panel according to claim 1, further comprising, in the effective display area, a color filter layer of a plurality of colors, and a second light-shielding layer transmitting invisible light while shielding visible light, wherein the photo-detection elements disposed below the second light-shielding layer. ### Claim 7 (depends on 3) The display panel according to claim 3, further comprising, in the effective display area, a color filter layer of a plurality of colors, and a second light-shielding layer transmitting invisible light while shielding visible light, wherein the photo-detection elements are disposed below the second light-shielding layer, and a liquid crystal layer, and a pair of electrodes applying a voltage to the liquid crystal layer are disposed in a region corresponding to the second light-shielding layer, thereby to achieve black display. ### Claim 8 (depends on 1) The display panel according to claim 1, wherein each of the image display elements has an organic EL (Electro Luminescence) layer emitting the visible light. ### Claim 9 (depends on 1) The display panel according to claim 1, wherein the invisible light is infrared light. ### Claim 10 (depends on 1) The display panel according to claim 1, wherein each of the image display elements has an organic EL layer emitting the invisible light, and a color conversion layer converting part of the invisible light emitted from the organic EL layer into the visible light is disposed on a light outgoing side of the organic EL layer. ### Claim 11 (depends on 10) The display panel according to claim 10, wherein the invisible light is ultraviolet light. ### Claim 12 (depends on 1) The display panel according to claim 1, wherein the light-shielding layer includes a resin layer dispersed with an organic pigment. ### Claim 13 (depends on 1) The display panel according to claim 1, wherein the light-shielding layer is configured of a plurality of stacked color filter layers which are different in color from one another. ### Claim 14 (depends on 1) The display panel according to claim 1, further comprising a position determination section determining a position of an object in contact with or close to the display screen based on outputs from the photo-detection elements. ### Claim 15 (depends on 14) The display panel according to claim 14, wherein the position determination section calculates barycentric coordinates of the object based on intensity distribution of invisible light detected by the photo-detection elements, thereby to determine the position of the object. ### Claim 16 (depends on 15) The display panel according to claim 15, wherein the photo-detection elements are disposed only in the effective display area, and the position determination section corrects the calculated barycentric coordinates by using information on size or a shape of the object. ### Claim 17 A module, comprising: a light source emitting invisible light and visible light; image display elements disposed in an effective display area of a display screen; a light-shielding layer disposed in a frame area around the effective display area, the light-shielding layer transmitting the invisible light from the light source while shielding the visible light from the light source; and photo-detection elements disposed in the effective display area or in both of the effective display area and the frame area, the photo-detection elements detecting the invisible light. ### Claim 18 An electronic device, comprising: a light source emitting invisible light and visible light; image display elements disposed in an effective display area of a display screen; a light-shielding layer disposed in a frame area around the effective display area, the light-shielding layer transmitting the invisible light from the light source while shielding the visible light from the light source; and photo-detection elements disposed in the effective display area or in both of the effective display area and the frame area, the photo-detection elements detecting the invisible light.