# US 10,502,892 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 10,502,892 B2 - Document ID: US10502892B2 - Status: Granted - Kind: B2 - Application number: 15/766,144 - Filed: 2017-08-04 - Published: 2019-04-25 - Granted: 2019-12-10 - Earliest claimed: 2017-01-05 - Assignees: Boe Technology Group Co., Ltd. - Applicants: Boe Technology Group Co., Ltd. - Inventors: Yongda Ma; Xinyin Wu; Yong Qiao - Web page: https://patentgrep.com/patent/US10502892B2 ## CPC - G02B 6/0088: {of the light guide or other optical sheets in the package} - G02B 6/0016: {Grooves, prisms, gratings, scattering particles or rough surfaces} - G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS ## Abstract Disclosed are a backlight module and a display device. The backlight module includes a back plate; at least one positioning mechanism is disposed inside the bottom plate of the back plate, each positioning mechanism includes at least one positioning stud, each positioning stud includes a main body and a flexible sleeve wrapping the main body. The backlight module further includes a light guide plate; a groove matched with at least one positioning mechanism is provided on the light guide plate, an inner wall of the groove is in contact with the flexible sleeve of the main body. ## Claims ### Claim 1 A backlight module, comprising: a back plate, at least one positioning mechanism, provided inside a bottom plate of the back plate, each positioning mechanism comprising at least one positioning stud and a flexible gasket, the flexible gasket being connected with the bottom plate of the back plate, and each positioning stud comprising a main body and a flexible sleeve wrapping the main body; and a light guide plate provided with a first groove, the first groove being matched with the at least one positioning mechanism, and an inner wall of the first groove being in contact with the flexible sleeve. ### Claim 2 (depends on 1) The backlight module according to claim 1, further comprising: an optical film, wherein the optical film is provided with a notch matched with the at least one positioning mechanism. ### Claim 3 (depends on 1) The backlight module according to claim 1, wherein a shape of a cross-section of the main body in a plane parallel to the bottom plate is in regular geometric shape. ### Claim 4 (depends on 1) The backlight module according to claim 1, wherein the flexible sleeve of the at least one positioning stud and the flexible gasket are integral structure. ### Claim 5 (depends on 1) The backlight module according to claim 1, wherein the bottom plate of the back plate comprises a protrusion, and the flexible gasket comprises a hole matched with the protrusion. ### Claim 6 (depends on 1) The backlight module according to claim 1, wherein the bottom plate of the back plate comprises a second groove, and the flexible gasket comprises a protrusion matched with the second groove. ### Claim 7 (depends on 1) The backlight module according to claim 1, wherein the flexible sleeve is a rubber sleeve, and the flexible gasket is a rubber gasket. ### Claim 8 (depends on 1) The backlight module according to claim 1, wherein the at least one positioning mechanism comprises a plurality of positioning studs, and the plurality of positioning studs are arranged in a straight line. ### Claim 9 (depends on 1) The backlight module according to claim 1, wherein the at least one positioning mechanism comprises at least two positioning mechanisms, and the at least two positioning mechanisms are disposed respectively on two opposite non-light-incident sides of the back plate. ### Claim 10 (depends on 1) A display device, comprising: the backlight module according to claim 1. ### Claim 11 (depends on 2) The backlight module according to claim 2, wherein the main body is in columnar shape, and the main body has same shape and same size at any cross-section in a plane parallel to the bottom plate of the backplane. ### Claim 12 (depends on 2) The backlight module according to claim 2, wherein the main body is in stepped columnar shape, and comprises a first portion proximal to the light guide plate and a second portion proximal to the optical film; wherein an orthographic projection of the first portion is greater than an orthographic projection of the second portion in a plane parallel to the bottom plate of the back plate. ### Claim 13 (depends on 2) The backlight module according to claim 2, wherein the main body is in tapered shape, and the main body is tapered in a direction from the light guide plate to the optical film. ### Claim 14 (depends on 2) The backlight module according to claim 2, wherein the main body is in tapered shape and has a flat head. ### Claim 15 (depends on 3) The backlight module according to claim 3, wherein the regular geometric shape is one of oval, circle and regular polygon. ### Claim 16 (depends on 11) The backlight module according to claim 11, wherein the flexible sleeve is in stepped tube shape, and comprises a first portion proximal to the light guide plate and a second portion proximal to the optical film; a thickness of the first portion is greater than a thickness of the second portion in a direction perpendicular to the bottom plate.