# US 10,502,992 B2 · Liquid crystal display device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,502,992 B2 - Document ID: US10502992B2 - Status: Granted - Kind: B2 - Application number: 15/663,664 - Filed: 2017-07-28 - Published: 2018-02-01 - Granted: 2019-12-10 - Earliest claimed: 2016-07-29 - Assignees: LG Display Co., Ltd. - Applicants: LG Display Co., Ltd. - Inventors: Sungwoo Kim; Jookwan Han; Jiho Son; Minji Kim; Dongtack Shin - Web page: https://patentgrep.com/patent/US10502992B2 ## CPC - G02F 1/133308: {Support structures for LCD panels, e.g. frames or bezels} - G02F 1/133345: {Insulating layers (G02F1/1335, G02F1/1337, G02F1/135, G02F1/136 take precedence)} - G02F 1/133514: {Colour filters} - G02F 1/13452: {Conductors connecting driver circuitry and terminals of panels} - G02F 1/133314: {Back frames} - G02F 2201/46: Fixing elements - G02F 2202/28: Adhesive materials or arrangements - 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 ## Abstract A liquid crystal display device includes: a liquid crystal panel; a driving PCB connected to the liquid crystal panel; and a PCB fixing bracket protruding from a cover bottom disposed below the liquid crystal panel, and having a PCB accommodating portion. Owing to the PCB fixing bracket, problems such as a line defect or separation of a fixing tape that occur when a PCB is attached, may be prevented. ## Claims ### Claim 1 A liquid crystal display device, comprising: a liquid crystal panel; a cover bottom disposed below the liquid crystal panel; and a single piece PCB fixing bracket protruding from the cover bottom, configured to accommodate at least a portion of a driving PCB for the liquid crystal panel, the single piece PCB fixing bracket including a lower horizontal portion, an upper horizontal portion and a vertical side surface portion directly connecting the lower horizontal portion and the upper horizontal portion to one another, the lower horizontal portion, the upper horizontal portion and the vertical side surface portion configured to enclose a respective one of three surfaces of the portion of the driving PCB, including an upper surface and a bottom surface of the portion of the driving PCB, the upper horizontal portion being shorter than the lower horizontal portion in a horizontal direction; wherein the driving PCB includes a first PCB ground region directly on the upper surface of the driving PCB and directly contacting the upper horizontal portion of the PCB fixing bracket, and a second PCB ground region directly on the lower surface of the driving PCB and directly contacting the lower horizontal portion of the PCB fixing bracket. ### Claim 2 (depends on 1) The liquid crystal display device of claim 1, wherein: the lower horizontal portion protrudes from the cover bottom; the upper horizontal portion is spaced apart from the lower horizontal portion by a distance and faces the lower horizontal portion; and the lower horizontal portion, the upper horizontal portion and the vertical side surface portion forms a PCB accommodation portion. ### Claim 3 (depends on 2) The liquid crystal display device of claim 2, wherein the PCB accommodation portion includes an inner side surface of the upper horizontal portion including a plurality of embossed portions. ### Claim 4 (depends on 1) The liquid crystal display device of claim 1, wherein the lower horizontal portion, the upper horizontal portion, and the vertical side surface portion of the PCB fixing bracket are integrally formed with the cover bottom. ### Claim 5 (depends on 1) The liquid crystal display device of claim 1, wherein the first or second PCB ground region is formed of a metallic material including gold (Au). ### Claim 6 (depends on 1) The liquid crystal display device of claim 1, wherein the upper horizontal portion including a plurality of convex portions and concave portions. ### Claim 7 (depends on 1) The liquid crystal display device of claim 1, wherein the upper horizontal portion including a clip structure. ### Claim 8 A liquid crystal display device, comprising: a liquid crystal (LC) panel; a backlight unit and a cover bottom disposed on a rear surface of the LC panel; a printed circuit board (PCB) bracket extending from a side surface of the cover bottom; a source PCB electrically connected to the LC panel, disposed on an upper surface of the PCB bracket, and having a ground region on an upper surface of the source PCB, the upper surface of the source PCB being opposite to and further away from the upper surface of the PCB bracket than a lower surface of the source PCB; a metal cover shield attached to the LC panel and the cover bottom, the metal cover shield having a horizontal upper inner surface, a horizontal lower inner surface, and a vertical side inner surface enclosing, respectively, the upper surface of the source PCB, the lower surface of the source PCB and a side surface of the source PCB that directly connects the upper surface and the lower surface of source PCB to one another, the horizontal upper inner surface of the metal cover shield directly and electrically contacting the ground region of the source PCB; an insulation sheet positioned directly on the vertical side inner surface and the horizontal lower inner surface of the metal cover shield, the insulating sheet including a contact hole, through which the upper inner surface of the metal cover shield is directly and electrically connected to the ground region of the source PCB, and a conductive adhesion portion disposed directly on the horizontal upper inner surface or the horizontal lower inner surface of the metal cover shield at one or both of an upper side and a lower side of the insulating sheet. ### Claim 9 (depends on 8) The liquid crystal display device of claim 8, wherein the metal cover shield is bent to cover from an upper surface of the LC panel to a lower surface of the cover bottom. ### Claim 10 (depends on 8) The liquid crystal display device of claim 8, wherein a non-conductive adhesion tape is interposed between the source PCB and the PCB bracket. ### Claim 11 A liquid crystal display device, comprising: a source printed circuit board (PCB) connected to a liquid crystal (LC) panel, and having one or more ground regions on a first surface of the source PCB, a cover bottom for accommodating and supporting the LC panel and a backlight unit; a conductive cover shield attached to the LC panel and the cover bottom, the conductive cover shield having a horizontal first inner surface, a horizontal second inner surface and a vertical third inner surface enclosing, respectively, an upper surface of the source PCB, an lower surface of the source PCB and a side surface of the source PCB, the horizontal first inner surface facing the horizontal second inner surface, the vertical third inner surface extending between the horizontal first inner surface and the horizontal second inner surface, and at least a portion of the horizontal first inner surface directly and electrically contacting a ground region of the one or more ground regions of the source PCB; and an insulation layer directly positioned on the horizontal second inner surface and the vertical third inner surface of the conductive cover shield and exposing the at least a portion the horizontal first inner surface of the conductive cover shield, and the insulation layer including a first upper insulating film having no viscosity, a first lower insulating film having no viscosity, and a second insulating film having a viscosity and disposed between the first upper insulating film and the first lower insulating film. ### Claim 12 (depends on 11) The liquid crystal display device of claim 11, wherein a circuit component is mounted to a second surface of the source PCB. ### Claim 13 (depends on 11) The liquid crystal display device of claim 11, wherein the first upper insulating film being attached to a first upper part of the conductive cover shield, which faces the ground region of the source PCB. ### Claim 14 (depends on 13) The liquid crystal display device of claim 13, wherein the second insulating film being attached to a second upper part of the conductive cover shield. ### Claim 15 (depends on 14) The liquid crystal display device of claim 14, wherein the second insulating film is separated into a plurality of regions in a manner that the at least a portion of the horizontal first inner surface is exposed to outside. ### Claim 16 (depends on 15) The liquid crystal display device of claim 15, wherein the first lower insulating film being attached to a lower part of the conductive cover shield which faces a circuit component. ### Claim 17 (depends on 16) The liquid crystal display device of claim 16, wherein the first upper insulating film and the first lower insulating films are each partially overlapped with the second insulating film. ### Claim 18 (depends on 16) The liquid crystal display device of claim 16, wherein the conductive cover shield includes a plurality of cutting lines configured for bending at a middle part of the conductive cover shield between an upper part and the lower part. ### Claim 19 (depends on 16) The liquid crystal display device of claim 16, wherein the first lower insulating film directly contacts the vertical third inner surface of the conductive cover shield without contacting a lower end of the conductive cover shield, and the lower end of the conductive cover shield being attached to the cover bottom. ### Claim 20 (depends on 16) The liquid crystal display device of claim 16, wherein the first lower insulating film is disposed on a rear surface of the cover bottom. ### Claim 21 (depends on 13) The liquid crystal display device of claim 13, wherein the first upper insulating film directly contacts the horizontal first inner surface of the conductive cover shield without contacting an upper end of the conductive cover shield, and the upper end of the conductive cover shield being attached to the LC panel. ### Claim 22 (depends on 13) The liquid crystal display device of claim 13, further comprising a flat type chip-on-film (COF) for connecting the LC panel and the source PCB with one another. ### Claim 23 (depends on 22) The liquid crystal display device of claim 22, wherein the COF is attached to a pad region of an array substrate of the LC panel, and the pad region including a pad for compensating for a stair-stepped portion from a color filter substrate. ### Claim 24 (depends on 23) The liquid crystal display device of claim 23, wherein the first upper insulating film is disposed on the pad.