CN102354477A - Gate circuit with two-way scanning function - Google Patents
Gate circuit with two-way scanning function Download PDFInfo
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- CN102354477A CN102354477A CN2011102480620A CN201110248062A CN102354477A CN 102354477 A CN102354477 A CN 102354477A CN 2011102480620 A CN2011102480620 A CN 2011102480620A CN 201110248062 A CN201110248062 A CN 201110248062A CN 102354477 A CN102354477 A CN 102354477A
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Abstract
The invention provides a gate circuit with a two-way scanning function, which consists of a plurality of shift registers sequentially connected in series and is characterized in that any shift register in the gate circuit comprises an upward pushing control circuit, an upward pushing output circuit, a downward pulling control circuit and two downward pulling output circuit connected in parallel, wherein scanning direction control signal ends, i.e., the input signal ends of the upward pushing control circuit and the downward pulling control circuit are respectively connected with two input voltages, and the scanning direction of a gate scanning circuit is controlled by means of the two input voltages. In the invention, two signals V1 and V2 are respectively used as control signals for scanning from top to bottom and scanning from bottom to top to achieve the two-way scanning function, and the downward pulling output circuit is additionally provided so as to maintain the output characteristic; and for providing more diversified panel structures, the gate circuit has the two-way scanning function so as to conveniently develop more varieties of products.
Description
Technical field
The present invention relates to the panel gate drive circuit of flat-panel screens, especially a kind of gate circuit of tool bilateral scanning function.
Background technology
At present; In general gate sweep circuit, can only accomplish the simple scanning function; Simple and easy signal gate sweep circuit as figure one is depicted as; Mainly constitute by the displacement working storage; Figure two is the inner illustrative circuitry of displacement working storage of wherein one-level; Push away on wherein having control circuit, on push away output circuit, pull-down control circuit and the drop-down circuit of publishing books, be that the assembly of its each thin portion circuit constitutes like figure three, the circuit framework that this assembly is formed can only reach the function of simple scanning.For the panel framework of more diversification is provided, so need provide panel in order to exploitation more products kind with bilateral scanning function.
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Summary of the invention
The objective of the invention is to reach the problem of simple scanning function, propose a kind of gate circuit of tool bilateral scanning function to the framework of present gate circuit.
Technical scheme of the present invention is:
A kind of gate circuit of tool bilateral scanning function; It is made up of a plurality of displacement working storages of serial connection successively; In the described gate circuit arbitrary displacement working storage include push away control circuit, on push away the drop-down output circuits of output circuit, pull-down control circuit and two parallel connections; On push away control circuit and pull-down control circuit direction of scanning control signal end be that the input signal end is connected two input voltages respectively, by the direction of scanning of two input voltage control grid sweep circuits.
The direction of scanning control signal end that pushes away control circuit and pull-down control circuit on of the present invention is that the input signal end is connected input voltage V1, V2 respectively, and when input voltage V1 is a high level, when V2 was low level, the gate circuit scanned from top to bottom; When input voltage V1 is a low level, when V2 was high level, the gate circuit scanned from lower to upper.
Push away control circuit on of the present invention and comprise field effect transistor T1, on push away output circuit and comprise field effect transistor T2, pull-down control circuit comprises field effect transistor T3, two drop-down output circuits comprise field effect transistor T4 and field effect transistor T4A respectively; The input signal end that pushes away control circuit on described is that the drain electrode of field effect pipe T1 connects input voltage V1; The grid of field effect transistor T1 as on push away control circuit the input control signal end connect the output of higher level's displacement working storage; The source electrode of field effect transistor T1 as on push away control circuit signal output part to connect the input control signal end that pushes away output circuit be the grid of field effect pipe T2; Simultaneously, the signal output part of the grid of field effect transistor T2 connection pull-down control circuit is the drain electrode of field effect pipe T3; The source electrode of field effect transistor T3 connects input voltage V2 as the input signal end of pull-down control circuit, and the grid of field effect transistor T3 connects the output of secondary displacement working storage as the input control signal end of pull-down control circuit; The drain electrode of field effect transistor T2 as on push away output circuit clock signal input terminal connect clock signal, the source electrode of field effect transistor T2 as on push away output circuit the signal output part signal output part that connects the drop-down output circuit of two parallel connections be the tie point of the drain electrode of field effect pipe T4 and T4A; The tie point of the drain electrode of field effect transistor T4, T4A and field effect transistor T2 source electrode is as the output of gate circuit; The grid of field effect transistor T4 and T4A is connected secondary displacement working storage and higher level's displacement working storage as the input control signal end of drop-down output circuit respectively; The source electrode of field effect transistor T4 and T4A also connects, and connects stabilized voltage supply.
The source electrode of field effect transistor T1-T4 of the present invention and T4A, the drain electrode all interchangeable.
Beneficial effect of the present invention:
Gate circuit of the present invention has the bilateral scanning function, and the more panel framework of diversification is provided, and the panel with bilateral scanning function is provided, in order to exploitation more products kind.
The present invention utilizes two signal V1 and V2 to reach the bilateral scanning function as the controlling signal of scanning from top to bottom and scanning from lower to upper respectively, and increases a drop-down output circuit in order to keeping output characteristics.
Description of drawings
Fig. 1 is existing gate sweep circuit figure.
Fig. 2 is the structural representation of displacement working storage in the existing gate sweep circuit.
Fig. 3-a is the circuit diagram of displacement working storage in the existing gate sweep circuit.
Fig. 3-b is the sequential chart of displacement working storage in the existing gate sweep circuit.
Fig. 4 be tool bilateral scanning function of the present invention the structural representation of gate circuit.
Fig. 5-a is the circuit diagram that the displacement working storage scans from top to bottom among the present invention.
Fig. 5-b is the circuit diagram that the displacement working storage scans from lower to upper among the present invention.
Fig. 6-a is displacement working storage timing for scanning figure from top to bottom among the present invention.
Fig. 6-b is displacement working storage timing for scanning figure from lower to upper among the present invention.
Embodiment
The present invention is further illustrated below in conjunction with accompanying drawing and embodiment.
As shown in Figure 4, for the panel framework of more diversification is provided, so need provide panel in order to exploitation more products kind with bilateral scanning function.The gate circuit of described tool bilateral scanning function; It is made up of a plurality of displacement working storages of serial connection successively; In the described gate circuit arbitrary displacement working storage include push away control circuit, on push away the drop-down output circuits of output circuit, pull-down control circuit and two parallel connections; On push away control circuit and pull-down control circuit the input signal end be connected input voltage V1, V2 respectively; When input voltage V1 is a high level; When V2 was low level, the gate circuit scanned from top to bottom; When input voltage V1 is a low level, when V2 was high level, the gate circuit scanned from lower to upper.
Push away control circuit on of the present invention and comprise field effect transistor T1, on push away output circuit and comprise field effect transistor T2, pull-down control circuit comprises field effect transistor T3, two drop-down output circuits comprise field effect transistor T4 and field effect transistor T4A respectively; The input signal end that pushes away control circuit on described is that the drain electrode (or source electrode) of field effect pipe T1 connects input voltage V1; The grid of field effect transistor T1 as on push away control circuit the input control signal end connect the output of higher level's displacement working storage; The source electrode of field effect transistor T1 (or drain electrode) as on push away control circuit signal output part to connect the input control signal end that pushes away output circuit be the grid of field effect pipe T2; Simultaneously, the signal output part of the grid of field effect transistor T2 connection pull-down control circuit is the drain electrode (or source electrode) of field effect pipe T3; The source electrode of field effect transistor T3 (or drain electrode) connects input voltage V2 as the input signal end of pull-down control circuit, and the grid of field effect transistor T3 connects the output of secondary displacement working storage as the input control signal end of pull-down control circuit; The drain electrode of field effect transistor T2 (or source electrode) as on push away output circuit clock signal input terminal connect clock signal, the source electrode of field effect transistor T2 (or drain electrode) as on push away output circuit the signal output part signal output part that connects the drop-down output circuit of two parallel connections be the tie point of the drain electrode (or source electrode) of field effect pipe T4 and T4A; The tie point of the drain electrode of field effect transistor T4, T4A (or source electrode) and field effect transistor T2 source electrode (or drain electrode) is as the output of gate circuit; The grid of field effect transistor T4 and T4A is connected secondary displacement working storage and higher level's displacement working storage as the input control signal end of drop-down output circuit respectively; The source electrode of field effect transistor T4 and T4A (or drain electrode) also connects, and connects stabilized voltage supply VGL.
During practical implementation:
Overall architecture connects as shown in Figure 4, reaches the bilateral scanning function as the controlling signal of scanning from top to bottom and scanning from lower to upper respectively by two controlling signal V1 and V2.
This motion invention will utilize two signal V1 and V2 to reach the bilateral scanning function as the controlling signal of scanning from top to bottom and scanning from lower to upper respectively, and increase a drop-down output circuit T4A in order to keeping output characteristics.
The assembly of motion is formed circuit description for this reason shown in Fig. 5-a, 5-b; Connect a controlling signal V1 outside the control circuit and connect a V2 signal in last pushing away in the pull-down control signal; Wherein newly-increased one group of one drop-down output circuit and this newly-increased drop-down output circuit is to be controlled by the upper level output signal; In the time will realizing scanning from top to bottom; Shown in Fig. 6-a; V1 is set at High voltage, and V2 is set at Low voltage, so just can realize the function that scans from top to bottom.Shown in Fig. 6-b, be the setting sequential explanation that ought scan from lower to upper, this moment, V1 need be set at Low and V2 need be set at High and can reach the trip function of scanning up down.
The present invention does not relate to all identical with the prior art prior art that maybe can adopt of part and realizes.
Claims (4)
1. the gate circuit of a tool bilateral scanning function; It is made up of a plurality of displacement working storages of serial connection successively; It is characterized in that arbitrary displacement working storage in the described gate circuit include push away control circuit, on push away the drop-down output circuits of output circuit, pull-down control circuit and two parallel connections; On push away control circuit and pull-down control circuit direction of scanning control signal end be that the input signal end is connected two input voltages respectively, by the direction of scanning of two input voltage control grid sweep circuits.
2. the gate circuit of tool bilateral scanning function according to claim 1; The direction of scanning control signal end that it is characterized in that pushing away on described control circuit and pull-down control circuit is that the input signal end is connected input voltage V1, V2 respectively; When input voltage V1 is a high level; When V2 was low level, the gate circuit scanned from top to bottom; When input voltage V1 is a low level, when V2 was high level, the gate circuit scanned from lower to upper.
3. the gate circuit of tool bilateral scanning function according to claim 1; It is characterized in that pushing away control circuit on described comprises field effect transistor T1; On push away output circuit and comprise field effect transistor T2; Pull-down control circuit comprises field effect transistor T3, and two drop-down output circuits comprise field effect transistor T4 and field effect transistor T4A respectively; The input signal end that pushes away control circuit on described is that the drain electrode of field effect pipe T1 connects input voltage V1; The grid of field effect transistor T1 as on push away control circuit the input control signal end connect the output of higher level's displacement working storage; The source electrode of field effect transistor T1 as on push away control circuit signal output part to connect the input control signal end that pushes away output circuit be the grid of field effect pipe T2; Simultaneously, the signal output part of the grid of field effect transistor T2 connection pull-down control circuit is the drain electrode of field effect pipe T3; The source electrode of field effect transistor T3 connects input voltage V2 as the input signal end of pull-down control circuit, and the grid of field effect transistor T3 connects the output of secondary displacement working storage as the input control signal end of pull-down control circuit; The drain electrode of field effect transistor T2 as on push away output circuit clock signal input terminal connect clock signal, the source electrode of field effect transistor T2 as on push away output circuit the signal output part signal output part that connects the drop-down output circuit of two parallel connections be the tie point of the drain electrode of field effect pipe T4 and T4A; The tie point of the drain electrode of field effect transistor T4, T4A and field effect transistor T2 source electrode is as the output of gate circuit; The grid of field effect transistor T4 and T4A is connected secondary displacement working storage and higher level's displacement working storage as the input control signal end of drop-down output circuit respectively; The source electrode of field effect transistor T4 and T4A also connects, and connects stabilized voltage supply.
4. the gate circuit of tool bilateral scanning function according to claim 3, it is characterized in that described field effect transistor T1-T4 and T4A source electrode, the drain electrode all interchangeable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102480620A CN102354477A (en) | 2011-08-26 | 2011-08-26 | Gate circuit with two-way scanning function |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102480620A CN102354477A (en) | 2011-08-26 | 2011-08-26 | Gate circuit with two-way scanning function |
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| CN102354477A true CN102354477A (en) | 2012-02-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011102480620A Pending CN102354477A (en) | 2011-08-26 | 2011-08-26 | Gate circuit with two-way scanning function |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102708818A (en) * | 2012-04-24 | 2012-10-03 | 京东方科技集团股份有限公司 | Shift register and display |
| CN104123905A (en) * | 2014-07-11 | 2014-10-29 | 昆山龙腾光电有限公司 | Shifting register and gate drive circuit |
| CN104240643A (en) * | 2014-09-30 | 2014-12-24 | 上海和辉光电有限公司 | Scanning structure capable of driving active matrix organic light emitting diode pixel circuit |
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| CN1681047A (en) * | 2004-02-06 | 2005-10-12 | 三星电子株式会社 | Shift register and display device therewith |
| US20060001637A1 (en) * | 2004-06-30 | 2006-01-05 | Sang-Jin Pak | Shift register, display device having the same and method of driving the same |
| CN1755765A (en) * | 2004-10-01 | 2006-04-05 | 三星电子株式会社 | Shift register, the gate driver circuit that possesses it and display board and method thereof |
| US20060256066A1 (en) * | 2002-06-10 | 2006-11-16 | Seung-Hwan Moon | Shift register, liquid crystal display device having the shift register and method of driving scan lines using the same |
| JP2008193545A (en) * | 2007-02-07 | 2008-08-21 | Mitsubishi Electric Corp | Semiconductor device and shift register circuit |
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2011
- 2011-08-26 CN CN2011102480620A patent/CN102354477A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060256066A1 (en) * | 2002-06-10 | 2006-11-16 | Seung-Hwan Moon | Shift register, liquid crystal display device having the shift register and method of driving scan lines using the same |
| CN1681047A (en) * | 2004-02-06 | 2005-10-12 | 三星电子株式会社 | Shift register and display device therewith |
| US20060001637A1 (en) * | 2004-06-30 | 2006-01-05 | Sang-Jin Pak | Shift register, display device having the same and method of driving the same |
| CN1755765A (en) * | 2004-10-01 | 2006-04-05 | 三星电子株式会社 | Shift register, the gate driver circuit that possesses it and display board and method thereof |
| JP2008193545A (en) * | 2007-02-07 | 2008-08-21 | Mitsubishi Electric Corp | Semiconductor device and shift register circuit |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102708818A (en) * | 2012-04-24 | 2012-10-03 | 京东方科技集团股份有限公司 | Shift register and display |
| CN102708818B (en) * | 2012-04-24 | 2014-07-09 | 京东方科技集团股份有限公司 | Shift register and display |
| US9064592B2 (en) | 2012-04-24 | 2015-06-23 | Boe Technology Group Co., Ltd. | Shift register and a display |
| CN104123905A (en) * | 2014-07-11 | 2014-10-29 | 昆山龙腾光电有限公司 | Shifting register and gate drive circuit |
| CN104123905B (en) * | 2014-07-11 | 2016-11-16 | 昆山龙腾光电有限公司 | Shift register and gate driver circuit |
| CN104240643A (en) * | 2014-09-30 | 2014-12-24 | 上海和辉光电有限公司 | Scanning structure capable of driving active matrix organic light emitting diode pixel circuit |
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Application publication date: 20120215 |