# US 8,786,322 B2 · Gate driver circuit and operating method thereof > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,786,322 B2 - Document ID: US8786322B2 - Status: Granted - Kind: B2 - Application number: 13/772,537 - Filed: 2013-02-21 - Published: 2014-06-26 - Granted: 2014-07-22 - Earliest claimed: 2012-12-21 - Assignees: Samsung Electro-Mechanics Co., Ltd. - Applicants: Samsung Electro-Mechanics Co., Ltd. - Inventors: Chang Jae Heo; Sung Man Pang - Web page: https://patentgrep.com/patent/US8786322B2 ## CPC - H03K 17/693: Switching arrangements with several input- or output-terminals, e.g. multiplexers, distributors (logic circuits H03K19/00; code converters H03M5/00, H03M7/00) - H03K 17/164: {using parallel switching arrangements} - H03K: PULSE TECHNIQUE (measuring pulse characteristics G01R; modulating sinusoidal oscillations with pulses H03C; transmission of digital information H04L; discriminator circuits detecting phase difference between two signals by counting or integrating cycles of oscillation H03D3/04; automatic control, starting, synchronisation or stabilisation of generators of electronic oscillations or pulses where the type of generator is irrelevant or unspecified H03L; coding, decoding or code conversion, in general H03M) ## Abstract There are provided a gate driver circuit and an operating method thereof. The gate driver circuit includes an output signal generating unit including a plurality of switch devices generating output signals, a selecting circuit unit generating a plurality of control signals according to a set selection state, and a plurality of driving circuit units receiving a reference signal and the plurality of control signals to control the plurality of switch devices, wherein the plurality of switch devices determine a level of the output signal by the plurality of control signal. ## Claims ### Claim 1 A gate driver circuit comprising: an output signal generating unit including a plurality of switch devices generating output signals; a selecting circuit unit generating a plurality of control signals according to a set selection state; and a plurality of driving circuit units receiving a reference signal and the plurality of control signals to control the plurality of switch devices, wherein the plurality of switch devices determine a level of the output signal by the plurality of control signals, and wherein each of the plurality of driving circuit units includes at least one of a three-phase inverter circuit and a plurality of analog switch circuits. ### Claim 2 (depends on 1) The gate driver circuit of claim 1, wherein the plurality of switch devices include a plurality of inverter circuits. ### Claim 3 A gate driver circuit comprising: an output signal generating unit including a plurality of switch devices generating output signals; a selecting circuit unit generating a plurality of control signals according to a set selection state; and a plurality of driving circuit units receiving a reference signal and the plurality of control signals to control the plurality of switch devices, wherein the plurality of switch devices determine a level of the output signal by the plurality of control signals, the selecting circuit unit generates the plurality of control signals according to a connection state of each of a plurality of bonding pads, and the selecting circuit unit determines that values of control signals corresponding to bonding pads connected to a predetermined reference voltage among the plurality of bonding pads have a low level and determines that values of remaining control signals corresponding to remaining bonding pads that are floated among the plurality of bonding pads have a high level. ### Claim 4 (depends on 3) The gate driver circuit of claim 3, wherein a driving circuit unit receiving the control signal having the low level among the plurality of driving circuit units controls a switch device connected thereto to be turned off. ### Claim 5 (depends on 3) The gate driver circuit of claim 3, wherein a driving circuit unit receiving the control signal having the high level among the plurality of driving circuit units controls a switch device connected thereto to be turned on. ### Claim 6 (depends on 3) The gate driver circuit of claim 3, wherein each of the plurality of driving circuit units includes: a P-channel metal oxide semiconductor (PMOS) transistor pull-up connected when the value of the control signal has the low level; and an N-channel MOS (NMOS) transistor pull-down connected when the value of the control signal has the low level. ### Claim 7 (depends on 6) The gate driver circuit of claim 6, wherein the PMOS transistor and the NMOS transistor output the reference signal when the value of the control signal has the high level. ### Claim 8 (depends on 3) The gate driver circuit of claim 3, wherein the plurality of switch devices include a plurality of inverter circuits. ### Claim 9 An operating method of a gate driver circuit, comprising: generating a plurality of control signals according to a set selection state; controlling turning-on and turning-off of each of a plurality of switch devices using a reference signal and the plurality of control signals; and determining a level of an output signal by turning-on and turning-off operations of each of the plurality of switch devices, wherein in the generating of the plurality of control signals, the plurality of control signals are generated according to a connection state of each of a plurality of bonding pads, and in the generating of the plurality of control signals, values of control signals corresponding to bonding pads that are connected to a predetermined reference voltage among the plurality of bonding pads are determined to have a low level, and values of remaining control signals corresponding to remaining bonding pads that are floated among the plurality of bonding pads are determined to have a high level. ### Claim 10 (depends on 9) The operating method of claim 9, wherein in the controlling, a switch device to which a control signal having the low level value is input is turned on. ### Claim 11 (depends on 9) The operating method of claim 9, wherein in the controlling, a switch device to which a control signal having the high level value is input is turned off.