# US 12,181,746 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 12,181,746 B2 - Document ID: US12181746B2 - Status: Granted - Kind: B2 - Application number: 17/779,205 - Filed: 2022-05-18 - Published: 2024-05-23 - Granted: 2024-12-31 - Earliest claimed: 2022-04-20 - Assignees: Tcl China Star Optoelectronics Technology Co., Ltd. - Applicants: TCL China Star Optoelectronics Technology Co., Ltd. - Inventors: Ze Cao - Web page: https://patentgrep.com/patent/US12181746B2 ## CPC - G02F 1/133608: {including particular frames or supporting means} - G02F 1/133603: {with LEDs} - G02F 1/133605: {including specially adapted reflectors} - G02F 1/133606: {including a specially adapted diffusing, scattering or light controlling members} - H05K 7/20963: {Heat transfer by conduction from internal heat source to heat radiating structure (H05K7/20972 takes precedence)} - 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 - H05K: PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS ## Abstract The present application discloses a backlight module and a display device. The present application disposes a supporting portion, configured to support the diffuser plate, on a bottom board of a backplate. The supporting portion needs no connection with a light emitting diode (LED) lamp board. Compared to a conventional backlight module using a structure of a support bracket connected to an LED lamp board, the supporting portion of the present application can be formed during manufacturing the bottom board of the backplate to reduce fabrication processes of the backlight module and lower installation difficulty and a cost. ## Claims ### Claim 1 A backlight module, comprising: a backplate, comprising a bottom board, wherein the bottom board comprises at least two installation portions and a supporting portion, and the supporting portion is directly connected between the adjacent ones of the installation portions; and a light emitting diode (LED) lamp board, wherein the LED lamp board is disposed on a side surface of the installation portions; wherein the supporting portion protrudes along a light exiting direction of the LED lamp board; wherein a step is disposed on a surface of a protruding portion of the supporting portion protruding along the light exiting direction of the LED lamp board. ### Claim 2 (depends on 1) The backlight module according to claim 1, wherein the installation portions and the supporting portion are formed integrally. ### Claim 3 (depends on 1) The backlight module according to claim 1, wherein an engagement recess or an engagement block is formed on a surface of each of the installation portions connected to the supporting portion engagement recess or engagement block, and an engagement block which matches the engagement recess or an engagement recess which matches the engagement block is formed on the supporting portion and is fit-connected to the engagement recess or the engagement block of the installation portion. ### Claim 4 (depends on 1) The backlight module according to claim 1, wherein a first connection portion is disposed on the installation portions, a second connection portion is disposed on the supporting portion, and the first connection portion and the second connection portion bonded and connected to each other. ### Claim 5 (depends on 1) The backlight module according to claim 1, wherein a surface of the supporting portion contacting a diffuser plate is an arc-shaped and curved surface. ### Claim 6 (depends on 1) The backlight module according to claim 1, wherein an optical reflection layer is disposed on a surface of a protruding portion of the supporting portion protruding along the light exiting direction of the LED lamp board. ### Claim 7 (depends on 1) The backlight module according to claim 1, wherein an accommodation chamber is defined in a side of the supporting portion away from the LED lamp board. ### Claim 8 (depends on 7) The backlight module according to claim 7, wherein a heat dissipation layer is disposed on a chamber wall of the accommodation chamber. ### Claim 9 (depends on 7) The backlight module according to claim 7, wherein a heat dissipation material is filled in the accommodation chamber. ### Claim 10 (depends on 1) The backlight module according to claim 1, wherein the supporting portion comprises a curved plate, an end of the curved plate is connected to one of adjacent ones of the installation portions, and another end of the curved plate is connected to another of the adjacent ones of the installation portions. ### Claim 11 (depends on 1) The backlight module according to claim 1, wherein the bottom board comprises a through hole, the through hole is surrounded and defined by adjacent ones of the installation portions, and the supporting portion is disposed on the through hole and is directly connected to adjacent ones of the installation portions. ### Claim 12 (depends on 11) The backlight module according to claim 11, wherein the supporting portion comprises a column-shaped body, and an accommodation chamber is defined in a side of the column-shaped body away from the LED lamp board. ### Claim 13 A display device, comprising: a display panel and a backlight module, wherein the display panel is disposed opposite to the backlight module, and the backlight module comprises: a backplate, comprising a bottom board, wherein the bottom board comprises at least two installation portions and a supporting portion, and the supporting portion is directly connected between the adjacent ones of the installation portions; and a light emitting diode (LED) lamp board, wherein the LED lamp board is disposed on a side surface of the installation portions; wherein the supporting portion protrudes along a light exiting direction of the LED lamp board; wherein a step is disposed on a surface of a protruding portion of the supporting portion protruding along the light exiting direction of the LED lamp board. ### Claim 14 (depends on 13) The display device according to claim 13, wherein the installation portions and the supporting portion are formed integrally. ### Claim 15 (depends on 13) The display device according to claim 13, wherein an engagement recess or an engagement block is formed on a surface of each of the installation portions connected to the supporting portion, and an engagement block which matches the engagement recess or an engagement recess which matches the engagement block is formed on the supporting portion and is fit-connected to the engagement recess or the engagement block of the installation portion. ### Claim 16 (depends on 13) The display device according to claim 13, wherein a first connection portion is disposed on the installation portions, a second connection portion is disposed on the supporting portion, and the first connection portion and the second connection portion bonded and connected to each other. ### Claim 17 (depends on 13) The display device according to claim 13, wherein a surface of the supporting portion contacting a diffuser plate is an arc-shaped and curved surface. ### Claim 18 (depends on 13) The display device according to claim 13, wherein an optical reflection layer is disposed on a surface of a protruding portion of the supporting portion protruding along the light exiting direction of the LED lamp board.