# US 2014/0198022 A1 · Driving module with common control node > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0198022 A1 - Document ID: US20140198022A1 - Status: Published application - Kind: A1 - Application number: 13/870,187 - Filed: 2013-04-25 - Published: 2014-07-17 - Earliest claimed: 2013-01-15 - Assignees: Giantplus Technology Co., Ltd - Applicants: Giantplus Technology Co., Ltd. - Inventors: KAI-JU CHOU; CHE-YAO WU; KU-HUANG LAI; PO-CHUN HUANG - Web page: https://patentgrep.com/patent/US20140198022A1 ## CPC - G09G 3/3677: {suitable for active matrices only} - G09G 2310/0283: Arrangement of drivers for different directions of scanning - G09G 2310/0286: Details of a shift registers arranged for use in a driving circuit - G09G: ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION (arrangements for transferring data between digital computers and displays G06F3/14; static indicating arrangements comprising an association of a number of separate sources or light control cells G09F9/00; static indicating arrangements comprising integral associations of a number of light sources H01J, H01K, H10H, H05B33/12; scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission, details thereof H04N1/00) ## Abstract A driving module with a common control node according to the present invention is revealed. The driving module comprises a plurality of output units, a forward input unit and a reverse input unit. The output units are all coupled to a control node to share the control node. The output units output forward scanning signals sequentially according to the charge of the control node when the control node is charged by the forward input unit. The output units output reverse scanning signals sequentially according to the charge of the control node when the control node is charged by the reverse input unit. Thus, the present invention is provided to output forward or reverse scanning signals from the output units by sharing the control node so as to decrease the circuit area in the driving module. ## Claims ### Claim 1 A n-th stage driving module with a common control node, producing a plurality of scanning signals sequentially and outputting to a display panel sequentially, receiving a plurality of clock signals and receiving a first input voltage and a second input voltage, respectively, and the n-th stage driving module comprising: a plurality of output units, all coupled to a control node, and receiving said plurality of clock signals; a forward input unit, coupled to said control node, receiving said first input voltage and a front forward scanning signal of said output unit of any driving module lower than or equal to the (n−1)th stage, and charging and discharging said control node according to said first input voltage and said front forward scanning signal; and a reverse input unit, coupled to said control node, receiving said second input voltage and a back reverse scanning signal of said output unit of any driving module higher than or equal to the (n+1)th stage, and charging and discharging said control node according to said second input voltage and said back reverse scanning signal; where said forward input unit charges said control node according to said first input voltage and said front forward scanning signal, and produces and forward outputs a plurality of forward scanning signals sequentially according to said plurality of clock signals and said control node, respectively; and said reverse input unit charges said control node according to said second input voltage and said back reverse scanning signal, and produces and reversely outputs a plurality of reverse scanning signals sequentially according to said plurality of clock signals and said control node, respectively. ### Claim 2 (depends on 1) The driving module of claim 1, and further comprising a noise free unit coupled to said forward input unit, said reverse input unit, and said plurality of output units, receiving said first clock signal, and filtering out the noises at said control node of said plurality of output units. ### Claim 3 (depends on 2) The driving module of claim 2, wherein said noise free unit comprises: a control capacitor, having a first terminal for receiving said first clock signal, and producing a control level according to said first clock signal; a first transistor, having a first terminal coupled to a second terminal of said control capacitor; said first transistor having a second terminal coupled to said forward input unit, said reverse input unit and said control node; and a second transistor, having a first terminal coupled to said forward input unit, said reverse input unit, and said control node; said second transistor having a second terminal coupled to said first terminal of said first transistor and said second terminal of said control capacitor; and a third terminal of said first transistor and a third terminal of said second transistor coupled to a reference level. ### Claim 4 (depends on 1) The driving module of claim 1, wherein said plurality of clock signals include said first clock signal, a second clock signal, a third clock signal, and a fourth clock signal output to said driving module cyclically. ### Claim 5 (depends on 1) The driving module of claim 1, and further comprising a plurality of output capacitors, having a first terminal coupled to said control node, respectively, and having a second terminal coupled to said third terminals of said plurality of output units, respectively. ### Claim 6 (depends on 1) The driving module of claim 1, wherein when said forward input unit charges said control node according to said first input voltage and said front forward scanning signal, said reverse input unit discharges said control nodes after said plurality of output units produce one of said plurality of forward scanning signals. ### Claim 7 (depends on 1) The driving module of claim 1, wherein when said reverse input unit charges said plurality of output units according to said second input voltage and said back reverse scanning signal, said forward input unit discharges said control nodes after said plurality of output units produce one of said plurality of reverse scanning signals. ### Claim 8 (depends on 1) The driving module of claim 1, wherein said plurality of output units are a plurality of transistors each having a first terminal coupled to said control node, a second terminal receiving said plurality of clock signals, and a third terminal outputting said plurality of scanning signals.