CN106782408B - Display panel, GOA circuit and its driving capability regulating device - Google Patents
Display panel, GOA circuit and its driving capability regulating device Download PDFInfo
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- CN106782408B CN106782408B CN201710084197.5A CN201710084197A CN106782408B CN 106782408 B CN106782408 B CN 106782408B CN 201710084197 A CN201710084197 A CN 201710084197A CN 106782408 B CN106782408 B CN 106782408B
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
- G09G3/3611—Control of matrices with row and column drivers
- G09G3/3674—Details of drivers for scan electrodes
- G09G3/3677—Details of drivers for scan electrodes suitable for active matrices only
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
- G09G3/3611—Control of matrices with row and column drivers
- G09G3/3696—Generation of voltages supplied to electrode drivers
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- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The invention discloses a kind of driving capability regulating devices of array substrate gate driving GOA circuit, comprising: cut-in voltage generates unit, and the cut-in voltage generates the cut-in voltage that unit is used to generate thin film transistor (TFT) in GOA circuit；Unit is adjusted, the adjusting unit is for receiving adjustment signal, and the adjusting voltage changed according to adjustment signal output；Superpositing unit, the superpositing unit can be realized the driving capability adjust automatically of GOA circuit, substantially increase the display effect of Panel for the adjusting voltage superposition of the variation to the cut-in voltage to be adjusted with the driving capability to the GOA circuit.The invention also discloses a kind of GOA circuit and a kind of display panels.
Description
Technical field
The present invention relates to technical field of liquid crystal display, in particular to a kind of GOA (Gate Driver on Array, array
Substrate gate driving) circuit driving capability regulating device, a kind of with the GOA circuit of the driving capability regulating device and one
Kind display panel.
Background technique
As the resolution ratio of display Panel (control panel) arrives UHD from HD (High Definition, high definition) is gradually derivative
(Ultra High Definition, ultra high-definition), refreshing frequency is also gradually derived by 60Hz to 144Hz, even higher, therewith
It is charging problems for GOA product bring.
Since high resolution and refreshing frequency accelerate the problem that can bring the charging time short, in order to solve this problem
Bring influences, it is necessary to improve the driving capability of GOA circuit to guarantee the picture quality of Panel.However, in the related technology
The driving capability of GOA circuit is generally difficult to accomplish to automatically adjust.
Summary of the invention
The present invention is directed to solve one of the technical problem in above-mentioned technology at least to a certain extent.For this purpose, of the invention
First purpose is to propose that a kind of driving capability regulating device of GOA circuit, the driving capability that can be realized GOA circuit are automatic
Adjustment, substantially increases the display effect of Panel.
Second object of the present invention is to propose a kind of GOA circuit.Third object of the present invention is to propose one kind
Display panel.
In order to achieve the above objectives, a kind of array substrate gate driving GOA circuit that first aspect present invention embodiment proposes
Driving capability regulating device, comprising: cut-in voltage generates unit, and the cut-in voltage generates unit for generating GOA circuit
The cut-in voltage of middle thin film transistor (TFT)；Unit is adjusted, the adjusting unit is believed for receiving adjustment signal, and according to the adjusting
Number output variation adjusting voltage；Superpositing unit, the superpositing unit are used for the adjusting voltage superposition of the variation described in
Cut-in voltage is adjusted with the driving capability to the GOA circuit.
The driving capability regulating device of GOA circuit according to an embodiment of the present invention, by the tune for adjusting unit output variation
Voltage is saved, and the adjusting voltage superposition of the variation to cut-in voltage V to carry out the driving capability of GOA circuit by superpositing unit
It adjusts, to automatically adjust the driving capability of GOA circuit by the VGH for adjusting GOA circuit, substantially increases the aobvious of Panel
Show effect, guarantees the picture quality of Panel.
According to one embodiment of present invention, the driving capability regulating device further includes voltage follow unit, described
Voltage follow unit is used to carry out steady pressure treatment to the adjusting voltage of the cut-in voltage and the variation, and will be after steady pressure treatment
Cut-in voltage and adjust voltage be applied to the superpositing unit.
Wherein, it includes first resistor, second resistance and DC-DC converter that the cut-in voltage, which generates unit, and described first
One end of resistance is connected with the first end of one end of the second resistance and the DC-DC converter respectively, the first resistor
The other end be connected with the second end of the DC-DC converter after as cut-in voltage generate unit output end, described second
The other end of resistance is grounded.
According to one embodiment of present invention, the voltage follow unit includes: first voltage follower, first electricity
The output end for pressing the first end of follower to generate unit with the cut-in voltage is connected, the second end of the first voltage follower
It is connected with the third end of the first voltage follower, the third end of the first voltage follower and the superpositing unit phase
Even, the first voltage follower is used to carry out steady pressure treatment to the cut-in voltage；Second voltage follower, second electricity
The first end of follower is pressed to be connected with the output end for adjusting unit, the first end of the second voltage follower and described the
The third ends of two voltage followers is connected, and the second end of the second voltage follower is connected with the superpositing unit, and described the
Two voltage followers are used to carry out steady pressure treatment to the adjusting voltage of the variation.
According to one embodiment of present invention, the superpositing unit includes: 3rd resistor, one end of the 3rd resistor with
The second end of the second voltage follower is connected；One end of 4th resistance, the 4th resistance is followed with the first voltage
The third end of device is connected；Tertiary voltage follower, the first end of the tertiary voltage follower respectively with the 3rd resistor
The other end is connected with the other end of the 4th resistance, and the unlatching after the three-polar output of the tertiary voltage follower is adjusted is electric
Pressure；One end of 5th resistance, the 5th resistance is connected with the second end of the tertiary voltage follower, the 5th resistance
Other end ground connection；6th resistance, the 6th resistance are connected to the second end and third electricity of the tertiary voltage follower
Between the third end for pressing follower.
According to one embodiment of present invention, the adjusting unit includes: the first triode, the base of first triode
Pole receives the adjustment signal, the emitter ground connection of first triode；7th resistance, the 7th resistance are connected to described
Between the emitter and collector of first triode；8th resistance, the power supply of one end connection predeterminated voltage of the 8th resistance,
The other end of 8th resistance is connected with the collector of first triode；Second triode, second triode
Base stage is connected with the collector of first triode, the emitter ground connection of second triode, second triode
Collector is connected by the 9th resistance with the power supply of the predeterminated voltage, and the collector of second triode exports the variation
Adjusting voltage.
In some embodiments of the invention, the driving capability regulating device further include: adjustment signal generates unit,
The adjustment signal generates unit and is used for according to the output signal of the GOA circuit and preset upper limit voltage and lower voltage limit
The adjustment signal is generated, and the adjustment signal is exported to the adjusting unit.
Specifically, it includes comparator that the adjustment signal, which generates unit, and the adjustment signal generates unit and passes through the ratio
It is acted on compared with output signal of the device to the GOA circuit to export high electricity between the lower voltage limit and the upper limit voltage
Flat adjustment signal.
In order to achieve the above objectives, second aspect of the present invention embodiment proposes a kind of GOA circuit comprising above-mentioned driving
Ability adjustment mechanism.
GOA circuit according to an embodiment of the present invention being capable of adjust automatically difference by above-mentioned driving capability regulating device
Driving capability under refreshing frequency, for high-res and high refreshing frequency product, GOA driving capability can
It is effectively promoted, substantially increases the display effect of Panel, guarantee the picture quality of Panel.
In addition, the embodiment of the present invention also proposed a kind of display panel comprising above-mentioned GOA circuit.
The display panel of the embodiment of the present invention can be greatly improved aobvious by the self-adjustable GOA circuit of driving capability
Show effect, guarantees the picture quality of the display devices such as liquid crystal display.
Detailed description of the invention
Fig. 1 is the block diagram according to the driving capability regulating device of the GOA circuit of one embodiment of the invention；
Fig. 2 is the circuit diagram according to the driving capability regulating device of the GOA circuit of one embodiment of the invention；
Fig. 3 is the structural schematic diagram that unit is generated according to the adjustment signal of one embodiment of the invention；
Fig. 4 is the generation schematic diagram according to the adjustment signal CTL of one embodiment of the invention；
Fig. 5 is the structural schematic diagram according to the GOA circuit of one embodiment of the invention；
Fig. 6 is the block diagram according to the GOA circuit of one embodiment of the invention；
Fig. 7 is the block diagram according to the display panel of one embodiment of the invention.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to is used to explain the present invention, and is not considered as limiting the invention.
Below with reference to the accompanying drawings driving capability regulating device, the GOA of the GOA circuit proposed according to embodiments of the present invention described
Circuit and display panel.
As shown in Figure 1, the driving capability regulating device of the GOA circuit of one embodiment of the invention includes that cut-in voltage generates
Unit 10 adjusts unit 20 and superpositing unit 30.
Wherein, cut-in voltage generates unit 10 for generating thin film transistor (TFT) (Thin Film in GOA circuit
Transistor, TFT) cut-in voltage VGH '；Unit 20 is adjusted for receiving adjustment signal CTL, and according to adjustment signal CTL
Export the adjusting voltage VGH " of variation；Superpositing unit 30 is used for cut-in voltage VGH ' that the adjusting voltage VGH " of variation is added to,
To obtain the cut-in voltage VGH of the alterable TFT adjusted, it is adjusted with the driving capability to GOA circuit.
Influence generally for the driving capability of GOA circuit mainly has the cut-in voltage VGH of TFT and closes voltage VGL, and
The present invention is mainly to enhance the driving capability of GOA circuit by adjusting VGH, to meet the quality requirements of liquid crystal display product.
Therefore, the driving capability regulating device of GOA circuit according to an embodiment of the present invention, by adjusting unit output variation
Adjusting voltage, and the adjusting voltage superposition of the variation to cut-in voltage V is carried out the driving capability to GOA circuit by superpositing unit
It is adjusted, to automatically adjust the driving capability of GOA circuit by the VGH for adjusting GOA circuit, substantially increases Panel
Display effect, guarantee the picture quality of Panel.
According to one embodiment of present invention, as shown in Fig. 2, the driving capability regulating device of above-mentioned GOA circuit is also wrapped
Voltage follow unit 40 is included, voltage follow unit 40 is used to carry out pressure stabilizing to the adjusting voltage VGH " of cut-in voltage VGH ' and variation
Processing, and the cut-in voltage after steady pressure treatment is applied to superpositing unit 30 with voltage is adjusted.
Specifically, as shown in Fig. 2, it includes first resistor R1, second resistance R2 and DC-DC change that cut-in voltage, which generates unit 10,
Parallel operation 101, one end of first resistor R1 are connected with the first end of one end of second resistance R2 and DC-DC converter 101 respectively, the
The other end of one resistance R1 generates the output of unit 101 as cut-in voltage after being connected with the second end of DC-DC converter 101
End, the other end ground connection of second resistance R2.
That is, cut-in voltage, which generates unit 10, passes through first resistor R1, second resistance R2 and DC-DC converter 101
Stable VGH ' can be generated.
In one embodiment of the invention, as shown in Fig. 2, voltage follow unit 40 includes: first voltage follower OP1
With second voltage follower OP2, the first end of first voltage follower OP1 generates the output end phase of unit 10 with cut-in voltage
Even, the second end of first voltage follower OP1 is connected with the third end of first voltage follower OP1, first voltage follower OP1
Third end be connected with superpositing unit 30, first voltage follower OP1 be used for cut-in voltage VGH ' carry out steady pressure treatment.Second
The first end of voltage follower OP2 is connected with the output end for adjusting unit 20, the first end and second of second voltage follower OP2
The third end of voltage follower OP2 is connected, and the second end of second voltage follower OP2 is connected with superpositing unit 30, second voltage
Follower OP2 is used to carry out steady pressure treatment to the adjusting voltage VGH " of variation.
Therefore it says, voltage follow unit 40 includes two voltage followers OP1, OP2, and main function is stable output, is prevented
Only interfere.
According to one embodiment of present invention, as shown in Fig. 2, superpositing unit 30 includes: 3rd resistor R3, the 4th resistance
R4, tertiary voltage follower OP3, the 5th resistance R5 and the 6th resistance R6.
Wherein, one end of 3rd resistor R3 is connected with the second end of second voltage follower OP2；One end of 4th resistance R4
It is connected with the third end of first voltage follower OP1；The first end of tertiary voltage follower OP3 is another with 3rd resistor R3 respectively
One end is connected with the other end of the 4th resistance R4, the cut-in voltage after the three-polar output adjusting of tertiary voltage follower OP3
VGH；One end of 5th resistance R5 is connected with the second end of tertiary voltage follower OP3, the other end ground connection of the 5th resistance R5；The
Six resistance R6 are connected between the second end of tertiary voltage follower OP3 and the third end of tertiary voltage follower OP3.
In other words, tertiary voltage follower OP3 and resistance R3, R4, R5, R6 constitute adder, be mainly used for by VGH ' with detect
Voltage VGH " the superposition for surveying fluctuation obtains the cut-in voltage VGH of TFT in GOA circuit, so as to improve VGH, improves GOA electricity
The driving capability on road.
In one embodiment of the invention, as shown in Fig. 2, adjusting unit 20 includes: the first triode Q1, the 7th resistance
R7, the 8th resistance R8, the second triode Q2.
The base stage of first triode Q1 receives adjustment signal CTL, the emitter ground connection of the first triode Q1, the 7th resistance R7
It is connected between the emitter and collector of the first triode Q1, the electricity of one end connection predeterminated voltage such as 5V of the 8th resistance R8
Source, the other end of the 8th resistance R8 are connected with the collector of the first triode Q1；The base stage of second triode Q2 and the one or three pole
The collector of pipe Q1 is connected, and the emitter ground connection of the second triode Q2, the collector of the second triode Q2 passes through the 9th resistance R9
It is connected with the power supply of predeterminated voltage such as 5V, the adjusting voltage VGH " of the collector output variation of the second triode Q2.
Wherein, the principle that VGH " is realized is as follows: CTL is adjustment signal, can be generated by adjustment signal described below single
Member generates, and is " L " in the state of default, and VGH " output at this time is 0V, and VGH keeps the original output of DC-DC converter 101, energy
Enough meet the driving of GOA circuit；When resolution ratio increases or refreshing frequency increases, the output of CTL signal is " H ", and VGH " is defeated at this time
It is out 5V, VGH is increased, and enhances the driving capability of GOA circuit.
Therefore, the size of VGH " is changed according to adjustment signal CTL.
In one embodiment of the invention, as shown in figure 3, the driving capability regulating device of above-mentioned GOA circuit is also wrapped
Include: adjustment signal generates unit 50, and adjustment signal generates unit 50 and is used for according to the output signal Output of GOA circuit and pre-
If upper limit voltage V1 and lower voltage limit V2 generate adjustment signal CTL, and by adjustment signal CTL export to adjust unit 20.
Wherein, it includes comparator that adjustment signal, which generates unit 50, and adjustment signal generates unit 50 by comparator to GOA electricity
The output signal Output on road is acted on to export high level adjustment signal between lower voltage limit V2 and upper limit voltage V1.
That is, Output is the output signal of GOA circuit, as shown in figure 4, V1 and V2 are upper limit voltage respectively under
Voltage limit, Output export high level by the effect realization of comparator between V1~V2, are other than V1~V2 range
Low level, so that CTL signal is generated, it is specific as shown in Figure 5.
As shown in fig. 6, the embodiment of the present invention proposes a kind of GOA circuit 100 comprising the driving of above-described embodiment description
Ability adjustment mechanism 200.
GOA circuit according to an embodiment of the present invention being capable of adjust automatically difference by above-mentioned driving capability regulating device
Driving capability under refreshing frequency, for high-res and high refreshing frequency product, GOA driving capability can
It is effectively promoted, substantially increases the display effect of Panel, guarantee the picture quality of Panel.
As shown in fig. 7, the embodiment of the present invention also proposed a kind of display panel 300 comprising above-mentioned GOA circuit 100.
The display panel of the embodiment of the present invention can be greatly improved aobvious by the self-adjustable GOA circuit of driving capability
Show effect, guarantees the picture quality of the display devices such as liquid crystal display.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside", " up time
The orientation or positional relationship of the instructions such as needle ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " be orientation based on the figure or
Positional relationship is merely for convenience of description of the present invention and simplification of the description, rather than the device or element of indication or suggestion meaning must
There must be specific orientation, be constructed and operated in a specific orientation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include at least one this feature.In the description of the present invention, the meaning of " plurality " is at least two, such as two, three
It is a etc., unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc.
Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be mechanical connect
It connects, is also possible to be electrically connected；It can be directly connected, can also can be in two elements indirectly connected through an intermediary
The interaction relationship of the connection in portion or two elements, unless otherwise restricted clearly.For those of ordinary skill in the art
For, the specific meanings of the above terms in the present invention can be understood according to specific conditions.
In the present invention unless specifically defined or limited otherwise, fisrt feature in the second feature " on " or " down " can be with
It is that the first and second features directly contact or the first and second features pass through intermediary mediate contact.Moreover, fisrt feature exists
Second feature " on ", " top " and " above " but fisrt feature be directly above or diagonally above the second feature, or be merely representative of
First feature horizontal height is higher than second feature.Fisrt feature can be under the second feature " below ", " below " and " below "
One feature is directly under or diagonally below the second feature, or is merely representative of first feature horizontal height less than second feature.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not
It must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be in office
It can be combined in any suitable manner in one or more embodiment or examples.In addition, without conflicting with each other, the skill of this field
Art personnel can tie the feature of different embodiments or examples described in this specification and different embodiments or examples
It closes and combines.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is not considered as limiting the invention, those skilled in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, modifies, replacement and variant.
Claims (9)
1. a kind of driving capability regulating device of array substrate gate driving GOA circuit characterized by comprising
Adjustment signal generates unit, and the adjustment signal generates unit and is used for according to the output signal of the GOA circuit and pre-
If upper limit voltage and lower voltage limit generate the adjustment signal, and the adjustment signal is exported to adjusting unit；
Cut-in voltage generates unit, and the cut-in voltage generates the unlatching electricity that unit is used to generate thin film transistor (TFT) in GOA circuit
Pressure；
Unit is adjusted, the adjusting unit is for receiving adjustment signal, and the adjusting electricity changed according to adjustment signal output
Pressure；
Superpositing unit, the superpositing unit are used for the adjusting voltage superposition of the variation to the cut-in voltage to described
The driving capability of GOA circuit is adjusted.
2. driving capability regulating device as described in claim 1, which is characterized in that further include voltage follow unit, the electricity
Pressure follows unit to carry out steady pressure treatment for the adjusting voltage to the cut-in voltage and the variation, and will be after steady pressure treatment
Cut-in voltage and adjusting voltage are applied to the superpositing unit.
3. driving capability regulating device as claimed in claim 2, which is characterized in that it includes that the cut-in voltage, which generates unit,
One resistance, second resistance and DC-DC converter, one end of the first resistor respectively with one end of the second resistance and described
The first end of DC-DC converter is connected, and the other end of the first resistor is made after being connected with the second end of the DC-DC converter
The output end of unit, the other end ground connection of the second resistance are generated for cut-in voltage.
4. driving capability regulating device as claimed in claim 3, which is characterized in that the voltage follow unit includes:
First voltage follower, the first end of the first voltage follower generate the output end phase of unit with the cut-in voltage
Even, the second end of the first voltage follower is connected with the third end of the first voltage follower, the first voltage with
It is connected with the third end of device with the superpositing unit, the first voltage follower is used to carry out at pressure stabilizing the cut-in voltage
Reason；
Second voltage follower, the first end of the second voltage follower is connected with the output end for adjusting unit, described
The first end of second voltage follower is connected with the third end of the second voltage follower, and the of the second voltage follower
Two ends are connected with the superpositing unit, and the second voltage follower is used to carry out at pressure stabilizing the adjusting voltage of the variation
Reason.
5. driving capability regulating device as claimed in claim 4, which is characterized in that the superpositing unit includes:
3rd resistor, one end of the 3rd resistor are connected with the second end of the second voltage follower；
One end of 4th resistance, the 4th resistance is connected with the third end of the first voltage follower；
Tertiary voltage follower, the first end of the tertiary voltage follower respectively with the other end of the 3rd resistor and described
The other end of 4th resistance is connected, the cut-in voltage after the three-polar output adjusting of the tertiary voltage follower；
One end of 5th resistance, the 5th resistance is connected with the second end of the tertiary voltage follower, the 5th resistance
The other end ground connection；
6th resistance, the 6th resistance be connected to the tertiary voltage follower second end and the tertiary voltage follower
Third end between.
6. driving capability regulating device as claimed in claim 4, which is characterized in that the adjusting unit includes:
The base stage of first triode, first triode receives the adjustment signal, and the emitter of first triode connects
Ground；
7th resistance, the 7th resistance are connected between the emitter and collector of first triode；
8th resistance, the 8th resistance one end connection predeterminated voltage power supply, the other end of the 8th resistance with it is described
The collector of first triode is connected；
Second triode, the base stage of second triode are connected with the collector of first triode, the two or three pole
The emitter of pipe is grounded, and the collector of second triode is connected by the 9th resistance with the power supply of the predeterminated voltage, institute
The collector for stating the second triode exports the adjusting voltage of the variation.
7. driving capability regulating device as described in claim 1, which is characterized in that the adjustment signal generate unit include than
Compared with device, the adjustment signal generates unit and is acted on by output signal of the comparator to the GOA circuit in institute
State output high level adjustment signal between lower voltage limit and the upper limit voltage.
8. a kind of GOA circuit, which is characterized in that including driving capability regulating device such as of any of claims 1-7.
9. a kind of display panel, which is characterized in that including GOA circuit as claimed in claim 8.
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| CN201710084197.5A CN106782408B (en) | 2017-02-16 | 2017-02-16 | Display panel, GOA circuit and its driving capability regulating device |
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| CN201710084197.5A CN106782408B (en) | 2017-02-16 | 2017-02-16 | Display panel, GOA circuit and its driving capability regulating device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3665670A4 (en) * | 2017-08-07 | 2021-04-28 | BOE Technology Group Co., Ltd. | Driving circuit of display panel, driving method thereof, and display panel |
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|---|---|---|---|---|
| CN107978266B (en) * | 2018-01-22 | 2021-03-30 | 京东方科技集团股份有限公司 | Driving signal generation circuit and method and display system |
| CN108550352B (en) * | 2018-07-26 | 2021-05-18 | 京东方科技集团股份有限公司 | Grid voltage control circuit, grid driving circuit and display device |
| CN108877638B (en) * | 2018-09-21 | 2021-06-04 | 重庆惠科金渝光电科技有限公司 | Drive circuit, boost chip and display device |
| CN114627822A (en) * | 2022-03-24 | 2022-06-14 | 武汉华星光电技术有限公司 | Driving method of GOA circuit, gate driver and display panel |
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| CN105206210A (en) * | 2014-06-23 | 2015-12-30 | 乐金显示有限公司 | Scan driver adn display device using the same |
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| EP3665670A4 (en) * | 2017-08-07 | 2021-04-28 | BOE Technology Group Co., Ltd. | Driving circuit of display panel, driving method thereof, and display panel |
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| Publication number | Publication date |
|---|---|
| CN106782408A (en) | 2017-05-31 |
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