# US 11,994,759 B2 · Liquid crystal display apparatus > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,994,759 B2 - Document ID: US11994759B2 - Status: Granted - Kind: B2 - Application number: 18/056,384 - Filed: 2022-11-17 - Published: 2023-03-09 - Granted: 2024-05-28 - Earliest claimed: 2020-07-14 - Assignees: Hisense Visual Technology Co., Ltd. - Applicants: Hisense Visual Technology Co., Ltd. - Inventors: Chao Chen; Jinlong Li; Zhiqiang Tang; Xiaolong Hu; Delin Cui; Yanquan Zhang; Wenping Yao; Jiong Wang; Fuyuan Wang - Web page: https://patentgrep.com/patent/US11994759B2 ## CPC - G02F 1/133314: {Back frames} - B23P 15/00: Making specific metal objects by operations not covered by a single other subclass or a group in this subclass - B25B 27/02: for connecting objects by press fit or detaching same {(B25D1/16 takes precedence)} - G02F 1/133317: {Intermediate frames, e.g. between backlight housing and front frame} - G02F 1/1339: Gaskets; Spacers; Sealing of cells - G09F 9/00: Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements (in which the variable information is permanently attached to a movable support G09F11/00; abacus G06C1/00; slide-rules G06G1/00) - 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 - B23P: METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS (arrangements for copying or controlling B23Q) - B25B: TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING, OR HOLDING - G09F: DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS ## Abstract A liquid crystal display apparatus is provided. The liquid crystal display apparatus comprises a backplane having a second step portion and a first step portion used for supporting a liquid crystal panel, that is, the assembly of optical parts such as a light homogenizing element and an optical film to the liquid crystal panel is implemented in the present application via the backplane without a middle frame. ## Claims ### Claim 1 A television, comprising: a liquid crystal panel, including a display region and a circuit board, and configured to display an image driven by the circuit board; a backlight source, configured to provide back light for the liquid crystal panel; a light homogenizing element, configured to homogenize light rays from the backlight source, wherein the liquid crystal panel is located on a light emitting side of the light homogenizing element; and a backplane, comprising a first side, a second side opposite to the first side, a third side and a fourth side opposite to the third side, wherein the fourth side has a second structure different from a first structure which the first side, the second side and the third side all have, and the first side comprises a first step portion and a second step portion, wherein the second step portion is configured to support the liquid crystal panel, and the first step portion is configured to support the light homogenizing element; wherein the television further comprises: an inner frame, disposed on a surface of a side of the second step portion facing the first step portion; and a sealing member disposed on a surface of a side of the inner frame facing the first step portion. ### Claim 2 (depends on 1) The television according to claim 1, further comprises: an optical film, configured to brighten the light rays from the backlight source; and a film bonding element disposed between the light homogenizing element and the optical film; wherein the film bonding element is located on an edge of the light homogenizing element at a same side with the optical film. ### Claim 3 (depends on 1) The television according to claim 1, wherein the inner frame comprises a first surface and a second surface opposite to the first surface, the first surface is fixed on the surface of the side of the second step portion facing the first step portion, and at least one first positioning part is provided on the first surface of the inner frame. ### Claim 4 (depends on 1) The television according to claim 1, wherein the inner frame comprises a first surface and a second surface opposite to the first surface, the first surface is fixed on the surface of the side of the second step portion facing the first step portion, and at least one second positioning part is provided on the second surface of the inner frame. ### Claim 5 (depends on 3) The television according to claim 3, wherein one of the at least one first positioning part is a recess. ### Claim 6 (depends on 1) The television according to claim 1, wherein the inner frame is an integrally extrusion-molded soft frame. ### Claim 7 (depends on 1) The television according to claim 1, wherein the inner frame comprises a first part made of a first material and a second part made of a second material different from the first material; wherein the second material is softer than the first material, and the first part is fixed to the surface of the side of the second step portion facing the first step portion. ### Claim 8 (depends on 7) The television according to claim 7, wherein the first material comprises Polypropylene (PP), and the second material comprises Thermoplastic Vulcanizate (TPV) or Thermoplastic Elastomer (TPE). ### Claim 9 (depends on 1) The television according to claim 1, wherein the sealing member comprises a foam tape, the foam tape is of a three-layer structure which comprises a first layer, a second layer and a third layer between the first layer and the second layer, the first layer is made of a base material and the second layer is made of an abrasion-resistant material and the third layer is made of foam. ### Claim 10 (depends on 1) The television according to claim 1, wherein the first side further comprises a side wall for connecting the first step portion and the second step portion, an accommodating space is formed by the first step portion, the side wall and the second step portion, and edges of the light homogenizing element and an optical film are placed in the accommodating space. ### Claim 11 (depends on 10) The television according to claim 10, wherein the first step portion, the second step portion and the side wall for connecting the first step portion and the second step portion are configured to form a C shape. ### Claim 12 (depends on 10) The television according to claim 10, wherein the first step portion, the side wall and the second portion are of an integrated structure. ### Claim 13 (depends on 1) The television according to claim 1, wherein the inner frame is configured to attach to the first side, the second side and the third side of the backplane. ### Claim 14 (depends on 1) The television according to claim 1, wherein the liquid crystal panel comprises an in-plane switching panel.