# US 11,307,348 B2 · Backlight module and display device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,307,348 B2 - Document ID: US11307348B2 - Status: Granted - Kind: B2 - Application number: 16/605,407 - Filed: 2019-04-26 - Published: 2021-12-30 - Granted: 2022-04-19 - Earliest claimed: 2018-05-30 - Assignees: Beijing BOE Technology Development Co., Ltd.; Boe Technology Group Co., Ltd. - Applicants: Beijing Boe Technology Development Co., Ltd.; Boe Technology Group Co., Ltd. - Inventors: Jian Xu; Jianbo Xian; Yong Qiao - Web page: https://patentgrep.com/patent/US11307348B2 ## CPC - G02B 6/0088: {of the light guide or other optical sheets in the package} - G02B 6/005: {provided by one optical element, or plurality thereof, placed on the light output side of the light guide} - G02F 1/133308: {Support structures for LCD panels, e.g. frames or bezels} - G02F 1/133317: {Intermediate frames, e.g. between backlight housing and front frame} - G02F 1/133322: {Mechanical guidance or alignment of LCD panel support components} - G02B 6/0068: {Arrangements of plural sources, e.g. multi-colour light sources} - G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS - 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 A backlight module and a display device are provided. The backlight module includes a back plate, an optical film, a light guide plate, and a fixing component. The optical film is provided at a light exiting side of the light guide plate, the back plate includes a bottom plate and a side plate located at least one end of the bottom plate, and the light guide plate is provided between the optical film and the bottom plate. The fixing component includes a first fixing subcomponent provided on the side plate and a second fixing subcomponent provided on the optical film, the first fixing subcomponent being clamped with the second fixing subcomponent. ## Claims ### Claim 1 A backlight module, comprising: a back plate comprising a bottom plate and a side plate provided at at least one end of the bottom plate; a light guide plate provided on the bottom plate and comprising a light exiting surface; an optical film provided at the light exiting surface of the light guide plate; a fixing component comprising a first fixing subcomponent and a second fixing subcomponent; wherein the first fixing subcomponent is provided on the side plate, the second fixing subcomponent is provided on the optical film, the first fixing subcomponent and the second fixing subcomponent being cooperated to fix the optical film; the side plate is provided with a first opening, the first fixing subcomponent comprises a fixing structure fixedly provided at the side plate through the first opening and a positioning structure connected with the fixing structure; the second fixing subcomponent comprises a lug formed at at least one end of the optical film integrally, each lug being provided with at least one through hole, and the positioning structure passing through the through hole; and wherein the fixing structure comprises a first strip structure passing through the first opening, and a second strip structure and a third strip structure respectively located at two sides of the side plate, the second strip structure being connected with an end of the first strip structure away from the light guide plate, the second strip structure being attached to the side plate, the third strip structure being connected with another end of the first strip structure near the light guide plate, and the third strip structure being attached to the side plate. ### Claim 2 (depends on 1) The backlight module according to claim 1, wherein the fixing structure further comprises a fourth strip structure and a fifth strip structure connected with each other, the fourth strip structure being parallel to the light exiting surface of the light guide plate, and the fifth strip structure being parallel to the third strip structure; and the positioning structure is fixedly provided on the fifth strip structure along an extension direction of the fifth strip structure. ### Claim 3 (depends on 2) The backlight module according to claim 2, wherein the second strip structure has a length greater than that of the third strip structure. ### Claim 4 (depends on 3) The backlight module according to claim 3, wherein the first opening is a blind hole, the fixing structure comprises the first strip structure, and a part of the first strip structure is clamped in the first opening. ### Claim 5 (depends on 4) The backlight module according to claim 4, wherein the end of the first strip structure is provided with a buckle, the part of the first strip structure is clamped in the first opening by the buckle. ### Claim 6 (depends on 5) The backlight module according to claim 5, wherein the positioning structure is fixedly provided at the fixing structure along a direction perpendicular to the light guide plate. ### Claim 7 (depends on 6) The backlight module according to claim 6, wherein two side plates are provided at two ends of the bottom plate, respectively; two fixing components are correspondingly provided at the two side plates, respectively; and each second fixing subcomponent comprises lugs provided at opposite ends of the optical film, each of the lugs being provided with two through holes. ### Claim 8 (depends on 7) The backlight module according to claim 7, further comprising a sealant frame, the sealant frame comprising: a strip frame and a strip extension structure inside the strip frame and extending inward, each lug is provided in a bent region surrounded by a side of the strip frame and a side of the strip extension structure, an end of the positioning structure being abutted with the strip extension structure; a first frame strip and a second frame strip provided at a side of the strip extension structure near the light guide plate, the first frame strip having an orthographic projection on the strip frame not overlapping with that of the second frame strip on the strip frame; wherein the strip frame and the first frame strip are configured to clamp the side plate; the strip frame and the second frame strip are configured to clamp the side plate and the fixing structure; and a surface of the strip extension structure near the light guide plate is provided with a second opening, an end of the positioning structure is clamped in and connected with the second opening. ### Claim 9 (depends on 8) A display device, comprising, the backlight module according to claim 8, a display panel provided in a bent area surrounded by a side of the strip extension structure away from the optical film and an inner side of the strip frame. ### Claim 10 (depends on 1) The backlight module according to claim 1, wherein the first opening has an aperture size in a first direction greater than a thickness of the first strip structure in the first direction, the first direction being perpendicular to the light exiting surface of the light guide plate. ### Claim 11 (depends on 1) The backlight module according to claim 1, wherein the second fixing subcomponent comprises lugs provided at opposite ends of the optical film, each of the lugs being provided with two through holes. ### Claim 12 (depends on 1) The backlight module according to claim 1, further comprising a sealant frame, the sealant frame comprising a strip frame and a strip extension structure inside the strip frame and extending inward, each lug is provided in a bent region surrounded by a side of the strip frame and a side of the strip extension structure, an end of the positioning structure being abutted with the strip extension structure. ### Claim 13 (depends on 12) The backlight module according to claim 12, wherein the sealant frame further comprises a first frame strip and a second frame strip provided at a side of the strip extension structure near the light guide plate, the first frame strip having an orthographic projection on the strip frame not overlapping with that of the second frame strip on the strip frame; the strip frame and the first frame strip being configured to clamp the side plate; and the strip frame and the second frame strip being configured to clamp the side plate and the fixing structure. ### Claim 14 (depends on 12) The backlight module according to claim 12, wherein a surface of the strip extension structure near the light guide plate is provided with a second opening, an end of the positioning structure being clamped in and connected with the second opening. ### Claim 15 (depends on 14) The backlight module according to claim 14, wherein the second opening is a through hole or a blind hole. ### Claim 16 (depends on 1) The backlight module according to claim 1, wherein the second strip structure has a thickness substantially equal to that of the third strip structure. ### Claim 17 A display device, comprising a backlight module, wherein the backlight module comprises: a back plate comprising a bottom plate and a side plate provided at at least one end of the bottom plate; a light guide plate provided on the bottom plate and comprising a light exiting surface; an optical film provided at the light exiting surface of the light guide plate; a fixing component comprising a first fixing subcomponent and a second fixing subcomponent; wherein the first fixing subcomponent is provided on the side plate, the second fixing subcomponent is provided on the optical film, the first fixing subcomponent and the second fixing subcomponent being cooperated to fix the optical film; the side plate is provided with a first opening, the first fixing subcomponent comprises a fixing structure fixedly provided at the side plate through the first opening and a positioning structure connected with the fixing structure; the second fixing subcomponent comprises a lug formed at at least one end of the optical film integrally, each lug being provided with at least one through hole, and the positioning structure passing through the through hole; and wherein the fixing structure comprises a first strip structure passing through the first opening, and a second strip structure and a third strip structure respectively located at two sides of the side plate, the second strip structure being connected with an end of the first strip structure away from the light guide plate, the second strip structure being attached to the side plate, the third strip structure being connected with another end of the first strip structure near the light guide plate, and the third strip structure being attached to the side plate. ### Claim 18 (depends on 17) The display device according to claim 17, wherein the backlight module comprises a sealant frame, the sealant frame being provided at a side surface of the optical film, the sealant frame comprising a strip frame and a strip extension structure disposed inside the strip frame and extending inward; the display device further comprises: a display panel provided in a bent area surrounded by a side of the strip extension structure away from the optical film and an inner side of the strip frame.