# US 2023/0265992 A1 · 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 2023/0265992 A1 - Document ID: US20230265992A1 - Status: Published application - Kind: A1 - Application number: 18/114,793 - Filed: 2023-02-27 - Published: 2023-08-24 - Earliest claimed: 2022-02-24 - Assignees: Changsha Hkc Optoelectronics Co., Ltd.; Hkc Corporation Limited - Applicants: Changsha HKC Optoelectronics Co., Ltd.; Hkc Corporation Limited - Inventors: Hu LIU; Haoxuan ZHENG - Web page: https://patentgrep.com/patent/US20230265992A1 ## CPC - F21V 19/003: {Fastening of light source holders, e.g. of circuit boards or substrates holding light sources} - G02F 1/133603: {with LEDs} - F21V 7/28: characterised by coatings - G02F 1/133608: {including particular frames or supporting means} - F21Y 2105/10: comprising a two-dimensional [2D] array of point-like light-generating elements - F21Y 2115/10: Light-emitting diodes [LED] - F21V: FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR - 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 - F21Y: INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED ## Abstract Disclosed are a display device and a backlight module comprising a backplane and a backlight part provided on the backplane, in which a seam is provided between the two adjacent backlight parts; an adjustment part is installed at the seam; the adjustment part comprises: a connecting portion, an end of which is installed on the backplane through the seam, in which a depth at which the connecting portion is installed in the backplane is adjustable; and an adjustment portion provided at an end of the connecting portion away from the backplane, in which an outer diameter of the adjustment portion tapers along a direction toward the backplane, and an end of the adjustment portion enters the seam. ## Claims ### Claim 1 A backlight module comprising a backplane and a plurality of backlight parts provided on the backplane, in which a seam is provided between the two adjacent backlight parts, wherein an adjustment part is installed at the seam, the adjustment part comprising: a connecting portion, an end of which is installed on the backplane through the seam; and an adjustment portion provided at an end of the connecting portion away from the backplane, in which an outer diameter of the adjustment portion tapers along a direction toward the backplane, an end of the adjustment portion enters the seam, a degree to which the adjustment portion enters the seam is adjusted by adjusting a depth at which the connecting portion is installed in the backplane, and a width of the seam is adjusted by adjusting the degree to which the adjustment portion enters the seam. ### Claim 2 (depends on 1) The backlight module according to claim 1, wherein a first surface of the backplane is provided with an assembly hole corresponding to the connecting portion, the assembly hole is provided with an inner thread, the connecting portion is provided with an outer thread corresponding to the inner thread, and a width of the assembly hole is smaller than the width of the seam. ### Claim 3 (depends on 2) The backlight module according to claim 2, wherein the backlight part comprises a base plate and a plurality of light-emitting units, a surface of the base plate is installed on the first surface of the backplane, and a plurality of the light-emitting units are installed in an array on a surface of the base plate facing away from the backplane. ### Claim 4 (depends on 3) The backlight module according to claim 3, wherein a length of the adjustment portion along an axial direction of the assembly hole is h2, a thickness of the base plate is h4, and h2 and h4 satisfy the following relationship: h2>h4. ### Claim 5 (depends on 3) The backlight module according to claim 3, wherein an edge of the base plate is provided with an avoidance groove corresponding to the adjustment portion of the adjustment part. ### Claim 6 (depends on 5) The backlight module according to claim 5, wherein the adjustment part further comprises a kit made of an elastic insulating material and provided in the seam; and the adjustment part is installed on the backplane through the kit. ### Claim 7 (depends on 6) The backlight module according to claim 6, wherein the kit comprises: a first portion provided in the seam; and a second portion comprising a first end facing the backplane and a second end facing away from the backplane, in which the first end is connected to the first portion, and an outer diameter of the second portion tapers along a direction toward the backplane; the second end is provided with an accommodating groove corresponding to the adjustment portion, and an inner diameter of the accommodating groove tapers along a direction toward the backplane; a bottom of the accommodating groove is provided with a through hole, the connecting portion passes through the through hole, and an inner surface of the through hole is provided with an inner thread corresponding to the connecting portion. ### Claim 8 (depends on 7) The backlight module according to claim 7, wherein a side of the base plate is coated with an insulating buffer layer. ### Claim 9 (depends on 1) The backlight module according to claim 1, wherein the adjustment portion has an inverted cone structure, and an upper end face of the adjustment portion is coated with a reflective material. ### Claim 10 (depends on 3) The backlight module according to claim 3, wherein an edge of the base plate is coated with a reflective material. ### Claim 11 (depends on 8) The backlight module according to claim 8, wherein a side of the insulating buffer layer facing away from the backplane is coated with a reflective material. ### Claim 12 (depends on 1) The backlight module according to claim 1, wherein an upper end face of the adjustment portion is connected to a reflecting portion comprising a plurality of reflecting surfaces. ### Claim 13 (depends on 1) The backlight module according to claim 1, wherein an upper end face of the adjustment portion is provided with a slotted pattern or a cross pattern. ### Claim 14 (depends on 5) The backlight module according to claim 5, wherein the avoidance groove is a semi-circular groove, an inner diameter of a hole formed by the two opposite avoidance grooves of the two adjacent base plates is smaller than a diameter of an upper end face of the adjustment portion and larger than a diameter of a bottom end face of the adjustment portion. ### Claim 15 (depends on 5) The backlight module according to claim 5, wherein avoidance groove is a semi-conical groove, and an inner diameter of the avoidance groove tapers along a direction toward the backplane; a maximum inner diameter of a hole formed by the two opposite avoidance grooves of the two adjacent base plates is smaller than a diameter of an upper end face of the adjustment portion and larger than a diameter of a bottom end face of the adjustment portion. ### Claim 16 (depends on 2) The backlight module according to claim 2, wherein a length of a thread section of the connecting portion is h1, a depth of the assembly hole is h3, and h1 and h3 satisfy the following relationship: h3≥h1. ### Claim 17 (depends on 1) The backlight module according to claim 1, wherein the connecting portion and the adjustment portion are formed integrally. ### Claim 18 (depends on 3) The backlight module according to claim 3, wherein the base plate is a glass base plate or a PCB base plate. ### Claim 19 (depends on 3) The backlight module according to claim 3, wherein the light-emitting unit is a Mini LED. ### Claim 20 (depends on 1) A display device comprising: a housing; a backlight module which is the backlight module according to claim 1 and installed in the housing; and a display panel installed on the housing and located on a light-emitting side of the backlight module.