# US 8,786,814 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 8,786,814 B2 - Document ID: US8786814B2 - Status: Granted - Kind: B2 - Application number: 13/410,493 - Filed: 2012-03-02 - Published: 2013-03-28 - Granted: 2014-07-22 - Earliest claimed: 2011-09-22 - Assignees: Samsung Display Co., Ltd. - Applicants: Hun-Bae Kim; Jong-Seok Chae - Inventors: Hun-Bae Kim; Jong-Seok Chae - Web page: https://patentgrep.com/patent/US8786814B2 ## CPC - G02F 1/13452: {Conductors connecting driver circuitry and terminals of panels} - 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 apparatus includes a liquid crystal panel with a pad portion area, the pad portion area having an input pad portion, the input pad portion including a plurality of input pads and a plurality of dummy pads, an output pad portion, and a conducting wire portion, the conducting wire portion electrically connecting two dummy pads of the plurality of dummy pads in the input pad portion, a driving integrated circuit (IC) on the pad portion area, the driving IC including an input bump portion corresponding to the input pad portion and an output bump portion corresponding to the output pad portion, and a flexible printed circuit (FPC) electrically connected to the driving IC. ## Claims ### Claim 1 A liquid crystal display apparatus, comprising: a liquid crystal panel with a pad portion area, the pad portion area including: an input pad portion, the input pad portion including a plurality of input pads and a plurality of dummy pads, an output pad portion, and a conducting wire portion, the conducting wire portion electrically connecting two dummy pads of the plurality of dummy pads in the input pad portion; a driving integrated circuit (IC) on the pad portion area, the driving IC including an input bump portion corresponding to the input pad portion and an output bump portion corresponding to the output pad portion; and a flexible printed circuit (FPC) electrically connected to the driving IC, the FPC including a diode. ### Claim 2 (depends on 1) The liquid crystal display apparatus of claim 1, wherein the FPC further comprises at least one test pattern. ### Claim 3 (depends on 1) The liquid crystal display apparatus of claim 1, wherein the dummy pad and the input pad are spaced apart from each other. ### Claim 4 A liquid crystal display apparatus, comprising: a liquid crystal panel with a pad portion area, the pad portion area including: an input pad portion, the input pad portion including a plurality of input pads and a plurality of dummy pads, an output pad portion, and a conducting wire portion, the conducting wire portion electrically connecting two dummy pads of the plurality of dummy pads in the input pad portion; a driving integrated circuit (IC) on the pad portion area, the driving IC including an input bump portion corresponding to the input pad portion and an output bump portion corresponding to the output pad portion; and a flexible printed circuit (FPC) electrically connected to the driving IC, wherein the input pad includes a first power voltage (VCI) input pad, a gate high voltage (VGH) input pad, and a gate low voltage (VGL) input pad. ### Claim 5 (depends on 4) The liquid crystal display apparatus of claim 4, wherein the input pad includes a plurality of VCI input pads, a plurality of VGH input pads, and a plurality of VGL input pads. ### Claim 6 (depends on 5) The liquid crystal display apparatus of claim 5, wherein the plurality of dummy pads are disposed adjacent at least two outermost input pads from among the plurality of VCI input pads, adjacent at least two outermost input pads from among the plurality of VGH input pads, and adjacent at least two outermost input pads from among the plurality of VGL input pads. ### Claim 7 (depends on 6) The liquid crystal display apparatus of claim 6, wherein the conducting wire portion electrically connects the dummy pad adjacent the VCI input pads and the dummy pad adjacent the VGL input pads. ### Claim 8 (depends on 7) The liquid crystal display apparatus of claim 7, wherein the FPC includes a diode, the diode being electrically connected to one of the dummy pads adjacent the VGL input pads. ### Claim 9 (depends on 8) The liquid crystal display apparatus of claim 8, wherein the VGL input pads are commonly connected to circuit patterns of the FPC, and one terminal of the diode being connected to the electrical connection between the VGL input pads and the circuit patterns of the FPC. ### Claim 10 (depends on 8) The liquid crystal display apparatus of claim 8, wherein at least one of the dummy pads adjacent the VCI input pads is electrically connected to the dummy pad adjacent the VGL input pads, the VGL input pads being electrically connected to the diode through the conducting wire portion. ### Claim 11 (depends on 8) The liquid crystal display apparatus of claim 8, wherein the FPC includes a test pattern, at least one of the dummy pads not electrically connected to the diode being connected to the test pattern. ### Claim 12 A liquid crystal display apparatus, comprising: a liquid crystal panel with a pad portion area, the pad portion area including: an input pad portion, the input pad portion including a plurality of input pads and a plurality of dummy pads, an output pad portion, and a conducting wire portion, the conducting wire portion electrically connecting two dummy pads of the plurality of dummy pads in the input pad portion; a driving integrated circuit (IC) on the pad portion area, the driving IC including an input bump portion corresponding to the input pad portion and an output bump portion corresponding to the output pad portion; and a flexible printed circuit (FPC) electrically connected to the driving IC, wherein the input pads include: a plurality of VCI input pads between two first dummy pads, a plurality of VGH input pads between two second dummy pads, and a plurality of VGL input pads being between two third dummy pads. ### Claim 13 (depends on 12) The liquid crystal display apparatus of claim 12, wherein the conducting wire portion a first portion electrically connects one first dummy pad and one second dummy pad, and a second portion electrically connecting another first dummy pad and another second dummy pad, the first and second portions being separated from each other. ### Claim 14 (depends on 13) The liquid crystal display apparatus of claim 13, wherein: the VGL input pads are commonly connected to a circuit pattern of the FPC, and the FPC includes a diode connected between the circuit pattern and the one second dummy pad. ### Claim 15 (depends on 12) The liquid crystal display apparatus of claim 12, wherein the FPC includes a diode connected between VGL input pads and VCI input pads, the diode being configured to block current flow from the VGL input pads.