# US 2023/0409131 A1 · Illuminated touch module > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2023/0409131 A1 - Document ID: US20230409131A1 - Status: Published application - Kind: A1 - Application number: 18/331,959 - Filed: 2023-06-09 - Published: 2023-12-21 - Earliest claimed: 2022-06-16 - Assignees: Chicony Power Technology Co., Ltd. - Applicants: Chicony Power Technology Co., Ltd. - Inventors: Chen-Hao CHIU - Web page: https://patentgrep.com/patent/US20230409131A1 ## CPC - G06F 1/1684: {Constructional details or arrangements related to integrated I/O peripherals not covered by groups G06F1/1635 - G06F1/1675} - G06F 1/169: {the I/O peripheral being an integrated pointing device, e.g. trackball in the palm rest area, mini-joystick integrated between keyboard keys, touch pads or touch stripes (G06F1/1643 takes precedence; constructional details of pointing devices G06F3/033)} - G02B 6/0036: {2-D arrangement of prisms, protrusions, indentations or roughened surfaces} - G02B 6/0055: {Reflecting element, sheet or layer} - G02B 6/006: {to produce indicia, symbols, texts or the like} - G06F 3/03547: {Touch pads, in which fingers can move on a surface} - G06F 3/042: by opto-electronic means - G06F 3/033: Pointing devices displaced or positioned by the user {, e.g. mice, trackballs, pens or joysticks}; Accessories therefor (digitisers characterised by the transducing means G06F3/041) - G06F 3/04895: Guidance during keyboard input operation, e.g. prompting - G06F 2203/04107: Shielding in digitiser, i.e. guard or shielding arrangements, mostly for capacitive touchscreens, e.g. driven shields, driven grounds - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) - G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS ## Abstract An illuminated touch module includes a base sheet, a light-shielding sheet, a light guide plate, a light-emitting element, and a cover plate. The base sheet is disposed on a circuit board and has a light reflection area. The light-shielding sheet is disposed above the base sheet and has a side surface and a notch recessed from the side surface. An opening of the notch is aligned with an edge of the base sheet. The light guide plate is embedded in the notch and located above the light reflection area. The light guide plate has a light guide pattern formed by microstructures and has a light incident surface. The light-emitting element is disposed on the circuit board and has a light outputting surface facing the light incident surface and the light guide pattern. The cover plate covers above the light guide plate and the light-shielding sheet. ## Claims ### Claim 1 An illuminated touch module, comprising: a base sheet disposed on a circuit board and having a top surface, the top surface having a light reflection area; a light-shielding sheet disposed above the base sheet and having a side surface and a notch recessed from the side surface, an opening of the notch being aligned with an edge of the base sheet; a light guide plate embedded in the notch and located above the light reflection area, wherein the light guide plate has a light guide pattern formed by a plurality of microstructures and has a light incident surface; a light-emitting element disposed on the circuit board and having a light outputting surface facing the light incident surface and the light guide pattern; and a cover plate covering above the light guide plate and the light-shielding sheet. ### Claim 2 (depends on 1) The illuminated touch module of claim 1, wherein the light guide pattern is spaced apart from the opening of the notch by a first distance, the light guide pattern is spaced apart from the light-emitting element by a second distance, and the second distance is greater than the first distance. ### Claim 3 (depends on 2) The illuminated touch module of claim 2, wherein the light-shielding sheet has a light blocking portion at a side of the opening of the notch. ### Claim 4 (depends on 3) The illuminated touch module of claim 3, wherein the light guide plate has a light-shielding area disposed corresponding to the opening of the notch. ### Claim 5 (depends on 1) The illuminated touch module of claim 1, further comprising a light-shielding element at least covers the edge of the base sheet. ### Claim 6 (depends on 5) The illuminated touch module of claim 5, wherein the light-shielding element is disposed on a surface of the cover plate facing the base sheet. ### Claim 7 (depends on 6) The illuminated touch module of claim 6, wherein the light-shielding element further extends to a surface of the circuit board away from the cover plate. ### Claim 8 (depends on 1) The illuminated touch module of claim 1, wherein the light-shielding sheet is adhered to the circuit board through an adhesive layer and spaced apart from the base sheet. ### Claim 9 (depends on 1) The illuminated touch module of claim 1, wherein the light-shielding sheet further has an air passage communicating the notch to the side surface. ### Claim 10 (depends on 9) The illuminated touch module of claim 9, wherein the air passage extends curvedly from the notch to the side surface. ### Claim 11 An illuminated touch module, comprising: a base sheet disposed on a circuit board and having a top surface, the top surface having a first light reflection area and a second light reflection area; a light-shielding sheet disposed above the base sheet and having a side surface, a first notch, and a second notch, the first notch and the second notch being recessed from the side surface, an opening of the first notch and an opening of the second notch being aligned with an edge of the base sheet; a light guide plate comprising a first light guide region and a second light guide region respectively embedded in the first notch and the second notch and respectively located above the first light reflection area and the second light reflection area, wherein the first light guide region has a first light guide pattern formed by a plurality of microstructures and has a light incident surface, and the second light guide region has a second light guide pattern formed by a plurality of microstructures and has a light incident surface; a first light-emitting element disposed on the circuit board and having a light outputting surface facing the light incident surface and the first light guide pattern of the first light guide region; a second light-emitting element disposed on the circuit board and having a light outputting surface facing the light incident surface and the second light guide pattern of the first light guide region; and a cover plate covering above the first light guide region, the second light guide region, and the light-shielding sheet and having a first pattern and a second pattern disposed corresponding to the first light guide pattern and the second light guide pattern respectively, wherein the first light guide pattern is spaced apart from the opening of the first notch by a first distance, the first light guide pattern is spaced apart from the first light-emitting element by a second distance, and the second distance is greater than the first distance. ### Claim 12 (depends on 11) The illuminated touch module of claim 11, wherein the first light guide region has a light-shielding area disposed corresponding to the opening of the first notch. ### Claim 13 (depends on 11) The illuminated touch module of claim 11, wherein the first notch has a bottom opposite to the opening of the first notch, and a width of the opening of the first notch is smaller than a width of the bottom. ### Claim 14 (depends on 11) The illuminated touch module of claim 11, further comprising a light-shielding element at least covers the edge of the base sheet. ### Claim 15 (depends on 14) The illuminated touch module of claim 14, wherein the light-shielding element is disposed on a surface of the cover plate facing the base sheet. ### Claim 16 (depends on 15) The illuminated touch module of claim 15, wherein the light-shielding element further extends to a surface of the circuit board away from the cover plate. ### Claim 17 (depends on 11) The illuminated touch module of claim 11, wherein the light-shielding sheet is adhered to the circuit board through an adhesive layer and spaced apart from the base sheet. ### Claim 18 (depends on 11) The illuminated touch module of claim 11, wherein the light-shielding sheet further has an air passage communicating the first notch to the side surface. ### Claim 19 (depends on 18) The illuminated touch module of claim 18, wherein the air passage extends curvedly from the first notch to the side surface. ### Claim 20 (depends on 18) The illuminated touch module of claim 18, wherein the light guide plate further comprises a connecting portion connected to the first light guide region and the second light guide region.