# US 10,768,483 B2 · Optical sheet tensioning device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,768,483 B2 - Document ID: US10768483B2 - Status: Granted - Kind: B2 - Application number: 16/250,649 - Filed: 2019-01-17 - Published: 2019-05-23 - Granted: 2020-09-08 - Earliest claimed: 2015-09-01 - Assignees: Manufacturing Resources International, Inc. - Applicants: Manufacturing Resources International, Inc. - Inventors: Mike Brown; Michael LeCave - Web page: https://patentgrep.com/patent/US10768483B2 ## CPC - G02F 1/133608: {including particular frames or supporting means} - G02F 1/133308: {Support structures for LCD panels, e.g. frames or bezels} - G02F 1/133385: {with cooling means, e.g. fans} - G02F 1/133603: {with LEDs} - G02F 1/133606: {including a specially adapted diffusing, scattering or light controlling members} - G02F 1/133311: {Environmental protection, e.g. against dust or humidity} - G02F 1/133322: {Mechanical guidance or alignment of LCD panel support components} - G02F 1/133331: {Cover glasses} - G02F 1/133628: {with cooling means} - G02F 2201/36: Airflow channels, e.g. constructional arrangements facilitating the flow of air - G02F 2201/38: Anti-reflection arrangements - G02F 2201/50: Protective arrangements - 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 ## Abstract An assembly for an electronic display is disclosed. An optical sheet is located behind the electronic display and adjacent to a backlight. A housing for said backlight, said optical sheet, and said electronic display is provided. An aperture is positioned along the perimeter of said optical sheet. A spring assembly is connected to said aperture and is configured to exert tensioning forces on said optical sheet. ## Claims ### Claim 1 An assembly for an electronic display comprising: a backlight; an optical sheet located adjacent to the electronic display and the backlight; a housing for said backlight, said optical sheet, and said electronic display; an aperture located in said optical sheet and positioned along a perimeter edge of said optical sheet; and a spring assembly having a first component which extends through said aperture and a second component which is connected to said first component and said housing, wherein said spring assembly is configured to exert tensioning forces on said optical sheet. ### Claim 2 (depends on 1) The assembly of claim 1 wherein: said electronic display comprises a liquid crystal display. ### Claim 3 (depends on 1) The assembly of claim 1 wherein: said first component of said spring assembly comprises an intermediary element; said second component of said spring assembly comprises a leaf spring; and said intermediary element is attached to said leaf spring. ### Claim 4 (depends on 3) The assembly of claim 3 further comprising: a post extending through said optical sheet and engaging a first portion of the leaf spring such that said first portion of said leaf spring extends substantially parallel to an adjacent edge of said optical sheet. ### Claim 5 (depends on 4) The assembly of claim 4 further comprising: a locating post extending through said optical sheet and engaging an end of said leaf spring. ### Claim 6 (depends on 5) The assembly of claim 5 wherein: said optical sheet has a perimeter and is substantially rectangular in shape; and at least three spring assemblies are located on each side of the perimeter of said optical sheet. ### Claim 7 (depends on 1) The assembly of claim 1 wherein: the optical sheet comprises a brightness enhancement film. ### Claim 8 (depends on 1) The assembly of claim 1 wherein: the optical sheet comprises light diffusion elements. ### Claim 9 (depends on 1) The assembly of claim 1 further comprising: an intake aperture in said housing for accepting ambient air; an exhaust aperture in said housing for discharging ambient air; a transparent protective plate positioned in front of said electronic display; a heat exchanger located within said housing; and a closed loop of circulating gas pathways which extend in the space between the protective plate and the electronic display and through the heat exchanger. ### Claim 10 (depends on 9) The assembly of claim 9 further comprising: a front thermal plate located behind the electronic display; a rear thermal plate located behind the front thermal plate; and a corrugated layer sandwiched between the front and rear thermal plates, wherein the corrugated layer is configured to accept the ambient air. ### Claim 11 (depends on 1) The assembly of claim 1 wherein: the backlight comprises a number of lighting elements arranged in a direct backlighting arrangement. ### Claim 12 An assembly for an electronic display comprising: a backlight panel positioned behind the electronic display; a plurality of lighting elements located on the backlight panel and positioned to illuminate the electronic display; an optical sheet located between the backlight panel and the electronic display, said optical sheet comprising a number of apertures positioned along a perimeter edge of said optical sheet; a housing for said backlight panel, said optical sheet, and said electronic display; a number of members, each extending from said housing; a number of tensioning leaf springs, each engaging one of said number of members and comprising a hook; and a plurality of intermediary elements, each extending through one of said number of apertures and comprising an opening for said hook. ### Claim 13 (depends on 12) The assembly of claim 12 wherein: said lighting elements comprise light emitting diodes. ### Claim 14 (depends on 12) The assembly of claim 12 wherein: each of said number of members extend through the optical sheet; a first portion of each tensioning spring extends substantially parallel to an adjacent edge of the optical sheet. ### Claim 15 (depends on 14) The assembly of claim 14 further comprising: a locating post extending through said optical sheet and engaging a first end of said tensioning spring. ### Claim 16 (depends on 12) The assembly of claim 12 further comprising: a number of post apertures located along the perimeter of said optical sheet; and a number of securing posts extending through said post apertures and connecting said optical sheet to said backlight panel. ### Claim 17 An assembly for an electronic display comprising: a transparent protective plate positioned in front of said electronic display; an optical sheet positioned behind the electronic display; a number of apertures positioned along the perimeter of said optical sheet; a backlight comprising a plurality of lighting elements, wherein said backlight is positioned adjacent to said optical sheet; a housing for said backlight, said optical sheet, and said electronic display; a heat exchanger located within said housing; an intake located on said housing configured to accept ambient air; an exhaust located on said housing configured to discharge ambient air; a plurality of leaf springs, each positioned along a perimeter wall of said optical sheet and engaging said optical sheet; a plurality of posts extending through the optical sheet and engaging a first portion of each respective leaf spring such that the first portion of said leaf spring extends substantially parallel to the adjacent edge of the optical sheet; a closed loop of circulating gas pathways comprising a space between the transparent protective plate and the electronic display and the heat exchanger; a front thermal plate located behind the electronic display; a rear thermal plate located behind the front thermal plate; and a corrugated layer sandwiched between the front and rear thermal plates, wherein the corrugated layer is configured to accept ambient air.