# US 2020/0401234 A1 · Input Device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2020/0401234 A1 - Document ID: US20200401234A1 - Status: Published application - Kind: A1 - Application number: 16/896,561 - Filed: 2020-06-09 - Published: 2020-12-24 - Earliest claimed: 2019-06-18 - Assignees: Lite-On Electronics (Guangzhou) Limited; Lite-On Technology Corporation - Applicants: Lite-On Electronics (Guangzhou) Limited; LITE-ON Technology Corporation - Inventors: Shih-Wen CHIU; Yi-Wen CHEN - Web page: https://patentgrep.com/patent/US20200401234A1 ## CPC - G02B 6/0021: {for housing at least a part of the light source, e.g. by forming holes or recesses} - G02B 6/0031: {Reflecting element, sheet or layer} - G02B 6/0036: {2-D arrangement of prisms, protrusions, indentations or roughened surfaces} - G02B 6/0055: {Reflecting element, sheet or layer} - G06F 3/0202: {Constructional details or processes of manufacture of the input device} - H01H 3/125: {using a scissor mechanism as stabiliser} - H01H 13/14: Operating parts, e.g. push-button - H01H 13/704: characterised by the layers, e.g. by their material or structure (H01H13/703 takes precedence) - H01H 13/705: characterised by construction, mounting or arrangement of operating parts, e.g. push-buttons or keys - H01H 13/7057: characterised by the arrangement of operating parts in relation to each other, e.g. pre-assembled groups of keys - H01H 13/785: characterised by the material of the contacts, e.g. conductive polymers - H01H 13/83: characterised by legends, e.g. Braille, liquid crystal displays, light emitting or optical elements - G02B 6/0073: {Light emitting diode [LED]} - G02B 6/0088: {of the light guide or other optical sheets in the package} - G02B 6/009: {of the light source in the package (G02B6/0021 takes precedence)} - G02B 6/0091: {of the light source relative to the light guide (G02B6/0021 takes precedence)} - H01H 2203/052: for backlighted keyboards - H01H 2219/039: Selective or different modes of illumination - H01H 2219/056: Diffuser; Uneven surface - H01H 2219/06: Reflector - H01H 2219/062: Light conductor - H01H 2221/058: to avoid tilting or skewing of contact area or actuator - H01H 2221/066: replaceable - H01H 2229/044: Injection moulding - G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) - H01H: ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES (contact cables H01B7/10; electrolytic self-interrupters H01G9/18; emergency protective circuit arrangements H02H; switching by electronic means without contact-making H03K17/00) ## Abstract The present disclosure provides an input device including a housing, a keyboard assembly, and a first light source. The housing comprises a body and a plurality of sidewalls. The plurality of sidewalls is disposed along the body, forming an accommodating space. The keyboard assembly is disposed in the accommodating space. The first light source is disposed in the body. The light emitted from the first light source emits from the plurality of sidewalls, creating a glowing effect on the periphery of the keyboard assembly. By configuring computer using modes corresponding to the light emitting states, it is possible for users to intuitively discriminate the using patterns. ## Claims ### Claim 1 An input device, comprising: a housing comprising a body and a plurality of sidewalls, wherein the plurality of sidewalls disposed along the body, and connecting to the body, thereby forming an accommodating space; a keyboard assembly disposed in the accommodating space; and a first light source disposed in the body, the light emitted from the first light source emitting through the plurality of sidewalls. ### Claim 2 (depends on 1) The input device according to claim 1, wherein the keyboard assembly comprises: a baseplate; and a plurality of keyswitches disposed on the baseplate; wherein the plurality of sidewalls extends toward the baseplate from the body. ### Claim 3 (depends on 2) The input device according to claim 2, wherein the keyboard assembly further comprises a second light source disposed below the plurality of keyswitches; the light emitted from the second light source emit from the plurality of keyswitches. ### Claim 4 (depends on 1) The input device according to claim 1, wherein the first light source comprises at least one first light emitting element and at least one first light source circuit board; the at least one first light emitting element is disposed on the at least one first light source circuit board. ### Claim 5 (depends on 4) The input device according to claim 4, wherein the at least one first light source circuit board disposed below the body is separated from the body by a distance. ### Claim 6 (depends on 5) The input device according to claim 5, wherein the first light source further comprises at least one light guiding element disposed on the light exit path of the at least one first light emitting element; the light emitted from the at least one first light emitting element is guided by the at least one light guiding element to emit to the plurality of sidewalls. ### Claim 7 (depends on 6) The input device according to claim 6, wherein the number of the at least one first light emitting element is plural; a reflective layer is provided on a surface of the body opposite to the plurality of first light emitting elements. ### Claim 8 (depends on 6) The input device according to claim 6, wherein the at least one light guiding element comprises a light incident surface, a light exit surface, a side surface, and a bottom surface; the light exit surface is opposite to the bottom surface; the light incident surface is connected to the light exit surface; the side surface is connected to the bottom surface; wherein the side surface is provided with a reflective layer or a light shielding layer. ### Claim 9 (depends on 4) The input device according to claim 4, wherein the at least one first light source circuit board disposed below the body is connected to the body. ### Claim 10 (depends on 9) The input device according to claim 9, wherein the number of the at least one first light emitting element is plural; a reflective layer is provided below the plurality of first light emitting elements.