CN205282052U - GOA circuit, display panel and display device - Google Patents
GOA circuit, display panel and display device Download PDFInfo
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- CN205282052U CN205282052U CN201521140830.0U CN201521140830U CN205282052U CN 205282052 U CN205282052 U CN 205282052U CN 201521140830 U CN201521140830 U CN 201521140830U CN 205282052 U CN205282052 U CN 205282052U
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Abstract
The utility model discloses a GOA circuit, display panel and display device for the GOA unit cascades the problem that too much causes the obvious decay of output signal in solving traditional GOA circuit. The GOA circuit includes: the signal output part of the capable GOA unit of n connects the signal input part of the capable GOA unit of n+k, and the output of the capable GOA unit of n+k is connected to the signal reset terminal of the capable GOA unit of n and the signal input part of the capable GOA unit of n+2k, the GOA circuit still includes the gating unit, and this gating unit is connected the 1st and is walked to the capable GOA unit of k, wherein, scanning signal is exported according to organizing the grid line from the 1st group to k in proper order to gating unit control GOA circuit, in x group, the GOA circuit walks to the capable scanning signal that exports in proper order of m k+x from x. The utility model discloses a display field mainly is applied to to the embodiment.
Description
Technical field
The utility model relates to field of display, particularly relates to a kind of GOA circuit, display panel and display unit.
Background technology
The development of indicating meter in the last few years presents high integration, the development trend of low cost. Wherein extremely important technology is exactly the realization of the technology mass production of GOA (English: GateDriveronArray, Chinese: array substrate row cutting). GOA technology is utilized to be integrated on the array substrate of display panel by gate switch circuit, such that it is able to save grid-driving integrated circuit part, to reduce product cost from material cost and manufacture craft two aspect. This kind utilizes the gate switch circuit of GOA Integration ofTechnology on array substrate also referred to as GOA circuit or stepping register circuit.
GOA circuit comprises some GOA unit, it is (English: ThinFilmTransistor that each GOA unit comprises some TFT, Chinese: thin film transistor, it is called for short: transistor), wherein, the corresponding a line grid line of each GOA unit, the output terminal of concrete each GOA unit connects a line grid line; Due to GOA circuit need large-scale unicircuit (English: integratedcircuit, be called for short: IC) realize, therefore how to become the developing direction of GOA circuit in the usage quantity of the same control IC ensureing GOA performance.
In prior art, GOA circuit is realized by multiple GOA unit cascade usually, and the output of next stage GOA unit is usually triggered by the output signal of upper one-level GOA circuit, but along with the lifting that display is differentiated, require that the GOA unit of cascade gets more and more, therefore output signal in transmittance process, there will be obvious decay, therefore the impact outputed signal by one-level GOA unit in GOA circuit cascade GOA unit more rearward is more serious, finally has influence on display effect.
Practical novel content
Embodiment of the present utility model provides a kind of GOA circuit, display panel and display unit, too much causes the problem of the obvious decay of output signal for solving GOA cascade in tradition GOA circuit.
For achieving the above object, embodiment of the present utility model adopts following technical scheme:
First aspect, it provides a kind of GOA circuit, comprising:
Many row GOA unit of cascade, wherein often the signal output terminal of row GOA unit connects a grid line;
Wherein, the signal output terminal of n-th line GOA unit connects the signal input terminus of the n-th capable GOA unit of+k, and the output terminal of the described n-th capable GOA unit of+k is connected to the signal reset end of described n-th line GOA unit and the signal input terminus of the capable GOA unit of the n-th+2k;
Described GOA circuit also comprises gating unit, and described gating unit connects the 1st and walks to row k GOA unit;
Wherein, GOA circuit described in described gating unit control exports sweep signal successively according to from the 1st group to kth group grid line; In xth group, described GOA circuit walks to from xth that m �� k+x is capable exports sweep signal successively, 1��x��k.
Optionally, in adjacent two groups of grid lines, after described gating unit exports sweep signal for the GOA unit that last a line grid line of upper one group of grid line to be detected corresponding, the GOA unit triggering the first row grid line of next group grid line corresponding exports sweep signal.
Optionally, described gating unit comprises the first gating subelement and the 2nd gating subelement;
Wherein, described first gating subelement connects the GOA unit of the first row grid line of odd number group grid line; Described 2nd gating subelement connects the GOA unit of the first row grid line of even number set grid line.
Optionally, in adjacent two groups of odd number group grid lines, after described first gating subelement exports sweep signal for the GOA unit that last a line grid line of upper one group of odd number group grid line to be detected corresponding, the GOA unit triggering the first row grid line of next group odd number group grid line corresponding exports sweep signal;
In adjacent two groups of even number set grid lines, after described 2nd gating subelement exports sweep signal for the GOA unit that last a line grid line of upper one group of even number set grid line to be detected corresponding, the GOA unit triggering the first row grid line of next group even number set grid line corresponding exports sweep signal.
Second aspect, it provides the scan method of GOA circuit as described in relation to the first aspect, comprising:
Control described GOA circuit and export sweep signal successively according to from the 1st group to kth group grid line;
In xth group, described GOA circuit walks to from xth that m �� k+x is capable exports sweep signal successively.
Optionally, the described GOA circuit of described control exports sweep signal successively according to from the 1st group to kth group grid line, comprising:
In adjacent two groups of grid lines, after detecting that the GOA unit that last a line grid line of one group of grid line is corresponding exports sweep signal, trigger the GOA unit output sweep signal that the first row grid line of next group grid line is corresponding.
Optionally, control described GOA circuit and export sweep signal successively according to from the 1st group to kth group grid line; Comprise:
In adjacent two groups of odd number group grid lines, after detecting that the GOA unit that last a line grid line of one group of odd number group grid line is corresponding exports sweep signal, trigger the GOA unit output sweep signal that the first row grid line of next group odd number group grid line is corresponding;
In adjacent two groups of even number set grid lines, after detecting that the GOA unit that last a line grid line of one group of even number set grid line is corresponding exports sweep signal, trigger the GOA unit output sweep signal that the first row grid line of next group even number set grid line is corresponding.
The third aspect, it provides comprise the display panel of GOA circuit as described in relation to the first aspect.
Fourth aspect, it provides comprise the display unit of the display panel as described in the third aspect.
GOA circuit provided by the utility model, display panel and display unit, interior cascade is organized after the GOA unit in GOA circuit being divided into groups, and trigger often group successively by gating unit and export sweep signal to grid line, reduce the progression of GOA unit cascade, decrease signal attenuation, for solving the problem that in tradition GOA circuit, GOA unit cascade too much causes output signal obviously to decay.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, it is briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
The structure iron of a kind of display panel that Fig. 1 provides for embodiment of the present utility model;
The structural representation of a kind of GOA circuit that Fig. 2 provides for embodiment of the present utility model;
The sequential chart of a kind of GOA circuit that Fig. 3 provides for embodiment of the present utility model;
The structural representation of a kind of GOA circuit that Fig. 4 provides for another embodiment of the present utility model;
The sequential chart of a kind of GOA circuit that Fig. 5 provides for another embodiment of the present utility model.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that described embodiment is only the utility model part embodiment, instead of whole embodiments. Based on the embodiment in the utility model, those of ordinary skill in the art are not making other embodiments all obtained under creative work prerequisite, all belong to the scope of the utility model protection.
The utility model is by the GOA unit to serial cascade direct in original GOA circuit, it is divided into k group and the GOA unit in group is carried out cascade, the signal output terminal of a front GOA unit in organizing is made to be connected to the signal input terminus of the interior next GOA unit of group, add gating unit in addition and it is used for each group of gating respectively, operationally, gating unit is (English: StartVertical with STV, Chinese: frame start signal) signal triggers in first group the 1st GOA unit and carries out exporting sweep signal, the signal input terminus being input to next GOA unit with the signal of a front GOA unit triggers this next one GOA unit, analogize successively, all GOA unit in first group are triggered output line by line, after first group of end of output, gating unit triggers the 1st GOA unit in the 2nd group by STV signal to carry out exporting sweep signal, afterwards as the processing mode of each GOA unit in first group carries out. realize triggering all GOA unit with this and export sweep signal.
As shown in Figure 1, being the structure iron of the display panel that embodiment of the present utility model is suitable for, this display panel comprises display unit and GOA circuit, and GOA circuit is for driving the display of display unit.
Embodiment of the present utility model provides a kind of GOA circuit, is applied to above-mentioned display panel, as shown in Figure 2, comprising:
Multiple GOA unit of cascade, exemplarily, each GOA unit has signal output terminal OUT, signal input terminus IN and reset end RST, wherein, signal output terminal OUT connects a line grid line G1��G (n+2k) for exporting sweep signal, signal input terminus IN is used for this GOA unit and starts to export sweep signal, and reset end RST is used for making this GOA unit stop exporting sweep signal.
Concrete, with reference to Fig. 2, multiple GOA unit is divided into k group, GOA unit capable for interval k is divided into one group. in other words, using the 1st, the capable GOA unit of 1+k, 1+2k...... as first group, using the 2nd, the capable GOA unit of 2+k, 2+2k...... as the 2nd group, the rest may be inferred, until kth, 2k, 3k...... are capable of kth group. wherein, the signal output terminal OUT of n-th line GOA unit 201 is connected to the signal input terminus IN of the n-th capable GOA unit 202 of+k, and the signal output terminal OUT of the n-th capable GOA unit of+k 202 is connected to the signal input terminus IN of the signal capable GOA unit 203 of reset end RST and the n-th+2k of described n-th line GOA unit 201, the rest may be inferred, to realize the cascade of GOA unit in a group, then the 1st group of the 1st GOA unit to kth group is respectively the 1st and walks to row k GOA unit, in each group, other GOA unit are after level is associated in the signal output terminal of the 1st row GOA unit of each group respectively, wherein k and n be more than or equal to 1 positive integer.
GOA circuit also comprises gating unit 204, that is gating unit 204 connects the 1st in each group GOA unit, gating unit 204 connects the signal input terminus IN that the 1st walks to row k GOA unit, after because of other GOA unit in each group, level is associated in each group of the 1st GOA unit successively again, so being just equivalent to control all GOA unit by gating unit 204.
Gating unit 204 controls GOA circuit and exports sweep signal successively according to from the 1st group to kth group grid line; In xth group, GOA circuit walks to from xth that m �� k+x is capable exports sweep signal successively. That is, the first gating one group of gating unit 204, then the GOA unit in this group is traveled through successively to export sweep signal successively, after completing all GOA unit of this group and exporting sweep signal, selecting next group again, the rest may be inferred, exports sweep signal finally to realize controlling all GOA unit, wherein 1��x��k, m be more than or equal to 1 positive integer.
Wherein optional, gating unit 204 can connect STV signal input terminus, and driven the first row GOA unit of each group by the frame start signal of this STV signal input terminus input.
GOA circuit provided by the utility model, interior cascade is organized after the GOA unit in GOA circuit being divided into groups, and trigger often group successively by gating unit 204 and export sweep signal to grid line, reduce the progression of GOA unit cascade, decrease signal attenuation, for solving the problem that in tradition GOA circuit, GOA unit cascade too much causes output signal obviously to decay.
Concrete, in adjacent two groups of grid lines, gating unit 204 as shown in Figure 2 also for, after detecting that GOA unit corresponding to last a line grid line of one group of grid line exports sweep signal, the GOA unit triggering the first row grid line of next group grid line corresponding exports sweep signal. With reference to the sequential chart of the present embodiment shown in Fig. 3. STV signal triggers x group the 1st row GOA unit and exports sweep signal, and the output of this x group the 1st row GOA unit triggers the output sweep signal of x group the 2nd row GOA unit, until the last a line GOA unit of x group exports sweep signal. After gating unit 204 detects that the last a line GOA unit of x group exports sweep signal, gating (x+1)th group, triggers x+1 group the 1st row GOA unit with STV signal and exports sweep signal, analogize with this. Fig. 2 wherein also show the group system clock signal clk that GOA unit connects, and at least one level signal VSS, here it is only a kind of example, can also be driven by the system clock of two or more and multiple level signal with reference to prior art GOA unit.
Embodiment of the present utility model provides another kind of GOA circuit, does following improvement with reference to shown in Fig. 4 on the GOA circuit shown in Fig. 2:
Gating unit 204 comprises the first gating subelement 401 and the 2nd gating subelement 402;
First gating subelement 401 connects the signal input terminus IN of the GOA unit of the first row grid line of odd number group grid line; 2nd gating subelement 402 connects the signal input terminus IN of the GOA unit of the first row grid line of even number set grid line. That is, managing the odd number group in all k group GOA unit by the first gating subelement 401, manage the even number set in all k group GOA unit by the 2nd gating subelement 402, wherein, k group described herein is the k group described in the GOA circuit shown in Fig. 2.
Now, gating unit 204 can connect two STV signal input terminuss, and namely the first gating subelement 401 connects STV1, and the 2nd gating subelement 402 connects STV2. And the first row GOA unit that the first gating subelement 401 is respectively organized by STV1 signal driving even number, the first row GOA unit that the 2nd gating subelement 402 is respectively organized by STV2 signal driving odd number.
Specifically, as shown in Figure 4, the first gating subelement 401 connects the 1st GOA unit of 2i-1 group, and the 2nd gating subelement 402 connects the 1st GOA unit of 2i group, and wherein, i meets 1��2i-1��k, 1��2i��k, and i is integer.
Further, in adjacent two groups of odd number group grid lines, after first sub-gating unit 401 exports sweep signal for the GOA unit that last a line grid line of upper one group of odd number group grid line to be detected corresponding, the GOA unit triggering the first row grid line of next group odd number group grid line corresponding exports sweep signal.
Specifically, with reference to the sequential chart of the present embodiment shown in Fig. 5. STV1 signal triggers 2i-1 group the 1st row GOA unit and exports sweep signal, and the output of this 2i-1 group the 1st row GOA unit triggers the output sweep signal of 2i-1 group the 2nd row GOA unit, until the last a line GOA unit of 2i-1 group exports sweep signal. After the first gating subelement 401 detects that the last a line GOA unit of 2i-1 group exports sweep signal, gating 2i+1 group, triggers 2i+1 group the 1st row GOA unit with STV1 signal and exports sweep signal, analogizing with this, wherein, i meets 1��2i-1��k, 1��2i��k, and i is integer.
In addition, in adjacent two groups of even number set grid lines, after 2nd gating subelement 402 exports sweep signal for the GOA unit that last a line grid line of upper one group of even number set grid line to be detected corresponding, the GOA unit triggering the first row grid line of next group even number set grid line corresponding exports sweep signal.
Specifically, with reference to the sequential chart of the present embodiment shown in Fig. 5. STV2 signal triggers 2i group the 1st row GOA unit and exports sweep signal, and the output of this 2i group the 1st row GOA unit triggers the output sweep signal of 2i group the 2nd row GOA unit, until the last a line GOA unit of 2i group exports sweep signal. After the first gating subelement 401 detects that the last a line GOA unit of 2i group exports sweep signal, gating 2i+2 group, triggers 2i+2 group the 1st row GOA unit with STV2 signal and exports sweep signal, analogizing with this, wherein, i meets 1��2i-1��k, 1��2i��k, and i is integer.
GOA circuit provided by the utility model, interior cascade is organized after the GOA unit in GOA circuit being divided into groups, and trigger often group successively by gating unit and export sweep signal to grid line, reduce the progression of GOA unit cascade, decrease signal attenuation, for solving the problem that in tradition GOA circuit, GOA cascade too much causes output signal obviously to decay, in addition, by the GOA unit after grouping is further divided into odd number group and even number set, odd number group and even number set is driven respectively by two gating subelements, odd number group and even number set can be driven simultaneously, improve the refreshing frequency of every frame display frame doublely. it should be appreciated that embodiment of the present utility model be not limited to by grouping after GOA unit only point odd even two groups only adopt two gating subelements to drive respectively, also comprise and be divided into many groups, adopt multiple gating subelement to drive.
Embodiment of the present utility model also provides the scan method of a kind of GOA circuit as described by Fig. 2 to Fig. 5, comprising:
Controlling described GOA circuit and export sweep signal successively according to from the 1st group to kth group grid line, wherein k is positive integer;
Optionally, in adjacent two groups of grid lines, after detecting that the GOA unit that last a line grid line of one group of grid line is corresponding exports sweep signal, trigger the GOA unit output sweep signal that the first row grid line of next group grid line is corresponding.
Optional in addition, in adjacent two groups of odd number group grid lines, after detecting that the GOA unit that last a line grid line of one group of odd number group grid line is corresponding exports sweep signal, trigger the GOA unit output sweep signal that the first row grid line of next group odd number group grid line is corresponding;
And in adjacent two groups of even number set grid lines, after detecting that the GOA unit that last a line grid line of one group of even number set grid line is corresponding exports sweep signal, trigger the GOA unit output sweep signal that the first row grid line of next group even number set grid line is corresponding.
In addition, in xth group so that described GOA circuit walks to from xth that m �� k+x is capable exports sweep signal successively, wherein 1��x��k, m be more than or equal to 1 positive integer.
The scan method of GOA circuit provided by the utility model, interior cascade is organized after the GOA unit in GOA circuit being divided into groups, and trigger often group successively by gating unit and export sweep signal to grid line, reduce the progression of GOA unit cascade, decrease signal attenuation, for solving the problem that in tradition GOA circuit, GOA unit cascade too much causes output signal obviously to decay.
Of the present utility model embodiment still provides a kind of display unit, adopt display panel as above. Here display unit can be: any product or parts with display function such as Electronic Paper, mobile phone, panel computer, televisor, indicating meter, notebook computer, digital phase frame, navigating instrument.
The above; it is only embodiment of the present utility model; but protection domain of the present utility model is not limited thereto; any it is familiar with those skilled in the art in the technical scope that the utility model discloses; change can be expected easily or replace, all should be encompassed within protection domain of the present utility model. Therefore, protection domain of the present utility model should be as the criterion with the protection domain of described claim.
Claims (6)
1. a GOA circuit, it is characterised in that, comprising: multiple GOA unit of cascade, wherein the signal output terminal of each GOA unit connects a line grid line;
Wherein, the signal output terminal of n-th line GOA unit connects the signal input terminus of the n-th capable GOA unit of+k, and the signal output terminal of the described n-th capable GOA unit of+k is connected to the signal reset end of described n-th line GOA unit and the signal input terminus of the capable GOA unit of the n-th+2k;
Described GOA circuit also comprises gating unit, and described gating unit connects the 1st and walks to row k GOA unit;
Wherein, GOA circuit described in described gating unit control exports sweep signal successively according to from the 1st group to kth group grid line; In xth group, described GOA circuit walks to from xth that m �� k+x is capable exports sweep signal successively, 1��x��k.
2. GOA circuit according to claim 1, it is characterised in that,
In adjacent two groups of grid lines, after described gating unit exports sweep signal for the GOA unit that last a line grid line of upper one group of grid line to be detected corresponding, the GOA unit triggering the first row grid line of next group grid line corresponding exports sweep signal.
3. GOA circuit according to claim 1, it is characterised in that, described gating unit comprises the first gating subelement and the 2nd gating subelement;
Wherein, described first gating subelement connects the GOA unit of the first row grid line of odd number group grid line; Described 2nd gating subelement connects the GOA unit of the first row grid line of even number set grid line.
4. GOA circuit according to claim 3, it is characterised in that,
In adjacent two groups of odd number group grid lines, after described first gating subelement exports sweep signal for the GOA unit that last a line grid line of upper one group of odd number group grid line to be detected corresponding, the GOA unit triggering the first row grid line of next group odd number group grid line corresponding exports sweep signal;
In adjacent two groups of even number set grid lines, after described 2nd gating subelement exports sweep signal for the GOA unit that last a line grid line of upper one group of even number set grid line to be detected corresponding, the GOA unit triggering the first row grid line of next group even number set grid line corresponding exports sweep signal.
5. a display panel, it is characterised in that, comprise the GOA circuit described in the arbitrary item of claim 1-4.
6. a display unit, it is characterised in that, comprise display panel according to claim 5.
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| CN201521140830.0U CN205282052U (en) | 2015-12-31 | 2015-12-31 | GOA circuit, display panel and display device |
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| CN201521140830.0U CN205282052U (en) | 2015-12-31 | 2015-12-31 | GOA circuit, display panel and display device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105405385A (en) * | 2015-12-31 | 2016-03-16 | 京东方科技集团股份有限公司 | GOA (Gate Driver on Array) circuit, GOA (Gate Driver on Array) circuit scanning method, display panel and display apparatus |
| CN109920387A (en) * | 2019-02-22 | 2019-06-21 | 合肥京东方卓印科技有限公司 | Shift register cell and its driving method, gate driving circuit and its driving method and display device |
| CN113257171A (en) * | 2021-06-17 | 2021-08-13 | 北京京东方显示技术有限公司 | Grid driving circuit and method, display panel and time sequence controller |
| CN114078447A (en) * | 2021-11-25 | 2022-02-22 | 京东方科技集团股份有限公司 | Display driving circuit and method, display panel and display device |
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2015
- 2015-12-31 CN CN201521140830.0U patent/CN205282052U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105405385A (en) * | 2015-12-31 | 2016-03-16 | 京东方科技集团股份有限公司 | GOA (Gate Driver on Array) circuit, GOA (Gate Driver on Array) circuit scanning method, display panel and display apparatus |
| WO2017113914A1 (en) * | 2015-12-31 | 2017-07-06 | 京东方科技集团股份有限公司 | Gate driver on array circuit and scanning method therefor, display panel and display apparatus |
| CN109920387A (en) * | 2019-02-22 | 2019-06-21 | 合肥京东方卓印科技有限公司 | Shift register cell and its driving method, gate driving circuit and its driving method and display device |
| US11200825B2 (en) | 2019-02-22 | 2021-12-14 | Hefei Boe Joint Technology Co., Ltd. | Shift register unit with reduced transistor count and method for driving the same, gate driving circuit and method for driving the same, and display apparatus |
| CN113257171A (en) * | 2021-06-17 | 2021-08-13 | 北京京东方显示技术有限公司 | Grid driving circuit and method, display panel and time sequence controller |
| CN114078447A (en) * | 2021-11-25 | 2022-02-22 | 京东方科技集团股份有限公司 | Display driving circuit and method, display panel and display device |
| CN114078447B (en) * | 2021-11-25 | 2023-11-14 | 京东方科技集团股份有限公司 | Display driving circuit, method, display panel and display device |
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