# US 10,371,885 B2 · Backlight module and display apparatus > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,371,885 B2 - Document ID: US10371885B2 - Status: Granted - Kind: B2 - Application number: 14/650,609 - Filed: 2015-04-15 - Published: 2017-02-09 - Granted: 2019-08-06 - Earliest claimed: 2015-03-30 - Assignees: Shenzhen China Star Optoelectronics Technology Co., Ltd.; Wuhan China Star Optoelectronics Technology Co., Ltd. - Applicants: Shenzhen China Star Optoelectronics Technology Co., Ltd.; Wuhan China Star Optoelectronics Technology Co., Ltd. - Inventors: Jie Zeng; Wei Guo - Web page: https://patentgrep.com/patent/US10371885B2 ## CPC - G02B 6/0088: {of the light guide or other optical sheets in the package} - G02B 6/0051: {Diffusing sheet or layer} - G02B 6/0053: {Prismatic sheet or layer; Brightness enhancement element, sheet or layer} - G02B 6/0055: {Reflecting element, sheet or layer} - G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS ## Abstract A backlight module is disclosed. The backlight module includes a reflection sheet including a first body and a second body; a light guide plate disposed on the first body of the reflection sheet; an optical film set disposed on the light guide plate; a plastic frame inside of which the reflection sheet, the light guide plate, and the optical film set are all disposed; and a connecting member configured to fixedly bond the second body to an inner side surface of the plastic frame. The present invention can ensure that the reflection sheet is fixedly bonded on the plastic frame well so that not only can a narrow frame design be achieved, but also the optical films can meet the requirement of fixing strength. ## Claims ### Claim 1 A backlight module comprising: a reflection sheet including a first body and a second body formed integrally, the second body being disposed on a side of the first body, and the first body and the second body defining and embracing an upwardly-opened cavity; a light guide plate disposed on the first body of the reflection sheet; an optical film set disposed on the light guide plate; a plastic frame inside of which the reflection sheet, the light guide plate, and the optical film set are all disposed; and a connecting member configured to fixedly bond the second body to an inner side surface of the plastic frame, wherein the reflection sheet further comprises a third body formed by extending the second body toward a topmost surface of the plastic frame, and the third body is fixedly bonded to the topmost surface of the plastic frame by the connecting member. ### Claim 2 (depends on 1) The backlight module according to claim 1, wherein the reflection sheet further comprises a fourth body formed by extending the second body toward an outer surface of the plastic frame and the fourth body is fixedly bonded to the outer surface of the plastic frame by the connecting member. ### Claim 3 (depends on 2) The backlight module according to claim 2, wherein the first body, the second body, the third body and the fourth body are integrally formed. ### Claim 4 (depends on 2) The backlight module according to claim 2, wherein the second body, the third body and the fourth body define a semi-enclosed structure with a downward opening and sides of the plastic frame are all boned to inside of the semi-enclosed structure by the connecting member. ### Claim 5 (depends on 1) The backlight module according to claim 1, wherein the light guide plate and the optical film are disposed in the cavity defined by the first body and the second body. ### Claim 6 (depends on 1) The backlight module according to claim 1, wherein the connecting member comprises a double-sided adhesive or glue. ### Claim 7 (depends on 1) The backlight module according to claim 1, wherein the optical film set comprises a diffusion sheet, a lower prism, and an upper prism, the diffusion sheet is disposed on the light guide plate, the lower prism is disposed on the diffusion sheet, and the upper prism is disposed on the lower prism. ### Claim 8 (depends on 1) The backlight module according to claim 1, wherein the backlight module further comprises a light emitting diode disposed on the side of the light guide plate. ### Claim 9 A display apparatus including a display panel and a backlight module, in which the display panel is disposed relative to the backlight module, and the backlight module comprising: a reflection sheet including a first body and a second body formed integrally, the second body being disposed on a side of the first body, and the first body and the second body defining and embracing an upwardly-opened cavity; a light guide plate disposed on the first body of the reflection sheet; an optical film set disposed on the light guide plate; a plastic frame inside of which the reflection sheet, the light guide plate, and the optical film set are all disposed; and a connecting member configured to fixedly bond the second body to an inner side surface of the plastic frame, wherein the reflection sheet further comprises a third body formed by extending the second body toward a topmost surface of the plastic frame and the third body is fixedly bonded to the topmost surface of the plastic frame by the connecting member. ### Claim 10 (depends on 9) The display apparatus according to claim 9, wherein the reflection sheet further comprises a fourth body formed by extending the second body toward an outer surface of the plastic frame and the fourth body is fixedly bonded to the outer surface of the plastic frame by the connecting member. ### Claim 11 (depends on 10) The display apparatus according to claim 10, wherein the first body, the second body, the third body, and the fourth body are integrally formed. ### Claim 12 (depends on 10) The display apparatus according to claim 10, wherein the second body, the third body and the fourth body define a semi-enclosed structure with a downward opening and sides of the plastic frame are all boned to inside of the semi-enclosed structure by the connecting member. ### Claim 13 (depends on 9) The display apparatus according to claim 9, wherein the light guide plate and the optical film are disposed in the cavity defined by the first body and the second body. ### Claim 14 (depends on 9) The display apparatus according to claim 9, wherein the connecting member comprises a double-sided adhesive or glue. ### Claim 15 (depends on 9) The display apparatus according to claim 9, wherein the optical film set comprises a diffusion sheet, a lower prism, and an upper prism, the diffusion sheet is disposed on the light guide plate, the lower prism is disposed on the diffusion sheet, and the upper prism is disposed on the lower prism. ### Claim 16 (depends on 9) The display apparatus according to claim 9, wherein the backlight module further comprises a light emitting diode disposed on the side of the light guide plate.