# US 12,225,742 B2 · Detection module and display device having the same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,225,742 B2 - Document ID: US12225742B2 - Status: Granted - Kind: B2 - Application number: 18/435,669 - Filed: 2024-02-07 - Published: 2024-07-25 - Granted: 2025-02-11 - Earliest claimed: 2020-04-10 - Assignees: Samsung Display Co., Ltd. - Applicants: Samsung Display Co., Ltd. - Inventors: Junghak Kim; Youngsik Kim; Kyowon Ku; Jaehyung Jo - Web page: https://patentgrep.com/patent/US12225742B2 ## CPC - G06F 3/042: by opto-electronic means - G06V 40/1318: {using electro-optical elements or layers, e.g. electroluminescent sensing} - H10F 39/8057: {Optical shielding} - H10K 59/65: OLEDs integrated with inorganic image sensors - H10W 90/00: Package configurations - H10F 39/80373: {characterised by the gate of the transistor} - H10F 39/811: {Interconnections} - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) - G06V: IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING - H10F: INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION - H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES - H10W: GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10 ## Abstract According to one aspect of the invention, a detection module for a display device, the detection module includes: a substrate; a detector disposed on the substrate to detect an external signal; a sensor driving circuit disposed on the substrate to drive the detector; and a light shielding layer to block an external light from entering the sensor driving circuit and to receive a light blocking voltage. ## Claims ### Claim 1 A detection module, the detection module comprising: a substrate; a detector disposed on the substrate to detect an external signal; a sensor driving circuit disposed on the substrate to drive the detector; and a light shielding layer to block an external light from entering the sensor driving circuit and to receive a light blocking voltage, wherein the light shielding layer comprises: a lower light shielding layer disposed between the substrate and the sensor driving circuit; and an upper light shielding layer disposed on the sensor driving circuit, the upper light shielding layer comprising an opening part overlapping the detector. ### Claim 2 (depends on 1) The detection module of claim 1, wherein the sensor driving circuit comprises at least one transistor. ### Claim 3 (depends on 2) The detection module of claim 2, wherein the transistor comprises: an active layer; a control electrode disposed on the active layer and overlapping the active layer; and an input electrode and an output electrode spaced apart from each other on the control electrode, and wherein the lower light shielding layer is disposed between the active layer and the substrate. ### Claim 4 (depends on 2) The detection module of claim 2, wherein the transistor comprises: an active layer; a control electrode disposed under the active layer and overlapping the active layer; and an input electrode and an output electrode spaced apart from each other on the active layer, and wherein the lower light shielding layer is disposed between the control electrode and the substrate. ### Claim 5 (depends on 4) The detection module of claim 4, wherein the lower light shielding layer comprises an opening at least partially overlapping the control electrode. ### Claim 6 (depends on 1) The detection module of claim 1, further comprising a power supply line to supply the light blocking voltage to the light shielding layer, the light blocking voltage being a ground voltage or a substantially constant voltage. ### Claim 7 (depends on 1) The detection module of claim 1, wherein at least one of the lower light shielding layer or the upper light shielding layer is configured to receive the light blocking voltage. ### Claim 8 (depends on 7) The detection module of claim 7, wherein the sensor driving circuit comprises at least one transistor, and wherein the detector overlaps the transistor. ### Claim 9 (depends on 8) The detection module of claim 8, wherein the transistor comprises: an active layer; a control electrode disposed on the active layer and overlapping the active layer; and an input electrode and an output electrode spaced apart from each other on the active layer, and wherein the opening part overlaps a position where the output electrode of the transistor and the detector are connected. ### Claim 10 (depends on 1) The detection module of claim 1, wherein an area of the lower light shielding layer is larger than an area of the upper light shielding layer. ### Claim 11 (depends on 1) The detection module of claim 1, wherein the detector comprises a detection element including a photoelectric conversion element. ### Claim 12 (depends on 11) The detection module of claim 11, further comprising an optical system including a plurality of transmission parts and a light absorbing part provided around the plurality of transmission parts, wherein the detection element is disposed under the optical system to receive light passing through the plurality of transmission parts. ### Claim 13 A display device comprising: a display module including a light emitting element to generate light, and a display panel to display an image using the light; and a detection module disposed under the display module to receive an external signal, wherein the detection module comprises: a substrate; a detector disposed on the substrate to detect the external signal; a sensor driving circuit disposed on the substrate to drive the detector; and a light shielding layer to block an external light from entering the sensor driving circuit and to receive a light blocking voltage, wherein the light shielding layer comprises: a lower light shielding layer disposed between the substrate and the sensor driving circuit; and an upper light shielding layer disposed on the sensor driving circuit, the upper light shielding layer comprising an opening part overlapping the detector. ### Claim 14 (depends on 13) The display device of claim 13, wherein the sensor driving circuit comprises at least one transistor. ### Claim 15 (depends on 14) The display device of claim 14, wherein the transistor comprises: an active layer; a control electrode disposed on the active layer and overlapping the active layer; and an input electrode and an output electrode spaced apart from each other on the control electrode, and wherein the lower light shielding layer is disposed between the active layer and the substrate or between the control electrode and the substrate. ### Claim 16 (depends on 14) The display device of claim 14, wherein the light blocking voltage is applied to at least one of the lower light shielding layer or the upper light shielding layer. ### Claim 17 (depends on 13) The display device of claim 13, wherein the sensor driving circuit comprises at least one transistor connected to the detector, wherein the transistor comprises: an active layer; a control electrode disposed on the active layer and overlapping the active layer; and an input electrode and an output electrode spaced apart from each other on the active layer, and wherein the opening part is provided corresponding to a position where the output electrode of the transistor and the detector are connected. ### Claim 18 (depends on 17) The display device of claim 17, wherein an area of the lower light shielding layer is larger than an area of the upper light shielding layer. ### Claim 19 (depends on 13) The display device of claim 13, wherein the detector comprises a detection element including a photoelectric conversion element. ### Claim 20 (depends on 19) The display device of claim 19, wherein the detection module further comprises an optical system including a plurality of transmission parts and a light absorbing part provided around the plurality of transmission parts, and wherein the detection element and the sensor driving circuit overlap the plurality of transmission parts. ### Claim 21 An electronic device comprising: a display module including a light emitting element to generate light, and a display panel to display an image using the light; a detection module disposed under the display module to receive an external signal; and a housing accommodating the display module and the detection module, wherein the detection module comprises: a substrate; a detector disposed on the substrate to detect the external signal; a sensor driving circuit disposed on the substrate to drive the detector; and a light shielding layer to block an external light from entering the sensor driving circuit and to receive a light blocking voltage, wherein the light shielding layer comprises: a lower light shielding layer disposed between the substrate and the sensor driving circuit; and an upper light shielding layer disposed on the sensor driving circuit, the upper light shielding layer comprising an opening part overlapping the detector.