CN109493823A - Control circuit and display panel applying same - Google Patents
Control circuit and display panel applying same Download PDFInfo
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- CN109493823A CN109493823A CN201811572095.9A CN201811572095A CN109493823A CN 109493823 A CN109493823 A CN 109493823A CN 201811572095 A CN201811572095 A CN 201811572095A CN 109493823 A CN109493823 A CN 109493823A
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- 230000008878 coupling Effects 0.000 claims description 129
- 238000010168 coupling process Methods 0.000 claims description 129
- 238000005859 coupling reaction Methods 0.000 claims description 129
- 239000000758 substrate Substances 0.000 claims description 24
- 230000005856 abnormality Effects 0.000 claims description 23
- 238000005259 measurement Methods 0.000 claims description 13
- 239000004973 liquid crystal related substance Substances 0.000 description 16
- 238000010586 diagram Methods 0.000 description 13
- 230000005611 electricity Effects 0.000 description 10
- 239000010409 thin film Substances 0.000 description 10
- 230000008859 change Effects 0.000 description 6
- 239000010408 film Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000003491 array Methods 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000002096 quantum dot Substances 0.000 description 1
Classifications
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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
- G09G3/3648—Control of matrices with row and column drivers using an active matrix
-
- 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
- G09G3/006—Electronic inspection or testing of displays and display drivers, e.g. of LED or LCD displays
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The application provides a control circuit and display panel who uses thereof, control circuit includes multistage shift register, and each shift register includes: a first switch, a control terminal of the first switch being electrically coupled to a control signal, a first terminal of the first switch being electrically coupled to the control signal, and a second terminal of the first switch being electrically coupled to a first node; a control terminal of the second switch is electrically coupled to the first node, a first terminal of the second switch is electrically coupled to a clock signal, and a second terminal of the second switch is electrically coupled to an output pulse signal; the first switch and the second switch are respectively electrically coupled with a measuring pad and used for measuring whether the control circuit has circuit abnormity.
Description
Technical field
This application involves display fields, more particularly to a kind of control circuit and its display panel of application.
Background technique
Liquid crystal display (Liquid Crystal Display, LCD) is to show image using the characteristic of liquid crystal material
A kind of panel display apparatus, compared to having many advantages, such as frivolous, low driving voltage and low-power consumption for other display devices.
And flat liquid crystal display driving circuit is mainly formed by connecting IC outside panel at present, but the method can not be by product
Cost reduces, can not also panel be made more to be thinned.
Usually there is gate driving circuit, source electrode drive circuit and pixel array in liquid crystal display.In pixel array
With multiple pixel circuits, each pixel circuit is opened and closed according to the scanning signal that gate driving circuit provides, and according to
According to the data-signal that source electrode drive circuit provides, data display is shown.For gate driving circuit, gate driving circuit is usual
It is swept with multi-stage shift register, and by level-one shift register propagation to the mode of next stage shift register to export
Signal is retouched into pixel array, to open pixel circuit in order, pixel circuit is made to receive data-signal.
Therefore in the processing procedure of driving circuit, just directly gate driving circuit is produced in array substrate, come replace by
The driving chip of outer connection IC production, such application for being referred to as grid array driving (Gate On Array, GOA) technology can
It is directly made in around panel, reduces production process, reduces product cost and be thinned panel more.
In shift register circuit, every thin film transistor (TFT) (Thin-Film Transistor, TFT) is allowed by design
It works in generate required wave mode in a default timing, but component characteristic can be under long-time use for TFT component
Change, so that deviateing the preset timing when component operation causes circuit abnormality, circuit is after working long hours, film crystal
11 volts or more of the blanking voltage drift of tube assembly.
Summary of the invention
The purpose of the application is, provides a kind of control circuit, including multi-stage shift register, each shift register packet
Include: a control terminal electric property coupling one of a first switch, the first switch controls signal, a first end of the first switch
Signal, one first node of a second end electric property coupling of the first switch are controlled described in electric property coupling；And a second switch,
First node described in one control terminal electric property coupling of the second switch, one frequency of a first end electric property coupling of the second switch
Rate signal, one output pulse signal of a second end electric property coupling of the second switch；The wherein first switch and described
Two switches respectively pad by the measurement of electric property coupling one, to measure whether the control circuit has circuit abnormality.
The another object of the application is a kind of control circuit, including multi-stage shift register, each shift register include:
One first switch, a control terminal electric property coupling one of the first switch control signal, the first end electricity of the first switch
Property the coupling control signal, one first node of a second end electric property coupling of the first switch；One second switch, described
First node described in one control terminal electric property coupling of two switches, one frequency of the first end electric property coupling letter of the second switch
Number, one output pulse signal of a second end electric property coupling of the second switch；One third switch, a control of the third switch
Electric property coupling one second node in end processed, output pulse signal described in a first end electric property coupling of third switch, described the
The low preset potential of a second end electric property coupling one of three switches；One the 4th switch, a control terminal electrical property coupling of the 4th switch
Connect the second node, first node described in a first end electric property coupling of the 4th switch, the one the of the 4th switch
Low preset potential described in two end electric property couplings；One sub- pull-down circuit, be electrically coupled to the control circuit the first node,
The output pulse signal and the low preset potential；And a sub- pull-down circuit controller, it is electrically coupled to the control electricity
The low preset potential on road and the sub- pull-down circuit；Wherein the first switch, the second switch, the third are opened
Pass, the 4th switch and the sub- pull-down circuit difference electric property coupling one measurement pad, whether to measure the control circuit
There is circuit abnormality.
The further object of the application is a kind of display panel, comprising: first substrate；And the second substrate, with described first
Substrate is oppositely arranged；It further include a kind of control circuit, including multi-stage shift register, each shift register includes: one first
One control terminal electric property coupling one of switch, the first switch controls signal, a first end electric property coupling of the first switch
The control signal, one first node of a second end electric property coupling of the first switch；One second switch, the second switch
A control terminal electric property coupling described in first node, one frequency signal of a first end electric property coupling of the second switch is described
One output pulse signal of a second end electric property coupling of second switch；One third switch, the control terminal electricity of the third switch
Property one second node of coupling, output pulse signal described in a first end electric property coupling of third switch, the third switch
The low preset potential of a second end electric property coupling one；One the 4th switchs, described in a control terminal electric property coupling of the 4th switch
Second node, it is described 4th switch a first end electric property coupling described in first node, it is described 4th switch a second end electricity
Property the coupling low preset potential；One sub- pull-down circuit is electrically coupled to the first node, described defeated of the control circuit
Pulse signal and the low preset potential out；And a sub- pull-down circuit controller, it is electrically coupled to the institute of the control circuit
State low preset potential and the sub- pull-down circuit；Wherein the first switch, the second switch, the third switch, are described
4th switch and the sub- pull-down circuit difference electric property coupling one measurement pad, to measure whether the control circuit has circuit different
Often.
It the purpose of the application and solves its technical problem and adopts the following technical solutions to realize.
In the embodiment of the application, third switch, a control terminal electric property coupling of the third switch are further included
One second node, output pulse signal described in a first end electric property coupling of third switch, the one the of the third switch
The low preset potential of two end electric property coupling one.
In the embodiment of the application, the third switch electric property coupling one measurement pad, to measure the control electricity
Whether road has circuit abnormality.
In the embodiment of the application, one the 4th switch, a control terminal electric property coupling of the 4th switch are further included
The second node, it is described 4th switch a first end electric property coupling described in first node, it is described 4th switch one second
Hold low preset potential described in electric property coupling.
In the embodiment of the application, the 4th switch electric property coupling one measurement pad, to measure the control electricity
Whether road has circuit abnormality.
In the embodiment of the application, a sub- pull-down circuit is further included, the described of the control circuit is electrically coupled to
First node, the output pulse signal and the low preset potential.
In the embodiment of the application, a sub- pull-down circuit controller is further included, the control circuit is electrically coupled to
The low preset potential and the sub- pull-down circuit.
In the embodiment of the application, the sub- measurement of pull-down circuit controller electric property coupling one pad, to measure
State whether control circuit has circuit abnormality.
The application is conducive to the circuit abnormality that parsing drives in grid array, therefore every thin film transistor (TFT) on circuit is all
Measurement pad is added, whether has circuit abnormality to measure.
Detailed description of the invention
Fig. 1 is electric current and blanking voltage schematic diagram on the thin film transistor (TFT) of exemplary control circuit；
Fig. 2 a is exemplary liquid crystal display schematic diagram；
Fig. 2 b is the liquid crystal display schematic diagram of one embodiment of the application；
Fig. 2 c is exemplary thompson circuit diagram；
Fig. 3 is the control circuit schematic diagram of one embodiment of the application；
Fig. 4 a is the control circuit schematic diagram in exemplary array substrate；
Fig. 4 b is the control circuit schematic diagram in the array substrate of one embodiment of the application.
Specific embodiment
The explanation of following embodiment is to can be used to the particular implementation of implementation to illustrate the application with reference to additional schema
Example.The direction term that the application is previously mentioned, such as "upper", "lower", "front", "rear", "left", "right", "inner", "outside", " side "
Deng being only the direction with reference to annexed drawings.Therefore, the direction term used be to illustrate and understand the application, rather than to
Limit the application.
Attached drawing and explanation are considered inherently illustrative, rather than restrictive.The similar list of structure in the figure
Member is to be given the same reference numerals.In addition, in order to understand and be convenient for description, the size and thickness of each component shown in the accompanying drawings are
It is arbitrarily shown, but the application is without being limited thereto.
In the accompanying drawings, for clarity, the thickness in layer, film, panel, region etc. is exaggerated.In the accompanying drawings, in order to understand
With convenient for description, the thickness of some layer and region is exaggerated.It will be appreciated that ought such as layer, film, region or substrate component quilt
Referred to as " " another component "upper" when, the component can be directly on another component, or there may also be middle groups
Part.
In addition, in the description, unless explicitly described as opposite, otherwise word " comprising " will be understood as meaning to wrap
The component is included, but is not excluded for any other component.In addition, in the description, " above " means to be located at target group
Part either above or below, and be not intended to must be positioned on the top based on gravity direction.
Further to illustrate that the application is the technical means and efficacy reaching predetermined goal of the invention and being taken, below in conjunction with
Attached drawing and specific embodiment, it is specific real to the display panel of a kind of control circuit and its application that are proposed according to the application
Mode, structure, feature and its effect are applied, detailed description is as follows.
In shift register circuit, every thin film transistor (TFT) (Thin-Film Transistor, TFT) is allowed by design
It works in generate required wave mode in a default timing, but component characteristic can be under long-time use for TFT component
Change (as shown in Figure 1), so that deviateing the preset timing when component operation causes circuit abnormality, circuit is working long hours
Afterwards, 11 volts or more of the blanking voltage drift of thin-film transistor component.
Fig. 2 a is exemplary liquid crystal display schematic diagram, please refers to Fig. 2 a, a kind of exemplary liquid crystal display 10, including
One colored filter substrate 100, array basal plate 110 and a driving chip 103, to driving circuit.
Fig. 2 b is the liquid crystal display schematic diagram of one embodiment of the application, Fig. 2 b is please referred to, in the embodiment of the application
In, it is a kind of with grid array driving liquid crystal display 11, including a colored filter substrate 100, array basal plate 110 and
One grid array driving 105, gate driving circuit to be produced in array substrate 110.
Fig. 2 c is exemplary thompson circuit diagram.Please refer to Fig. 2 c, a kind of thompson circuit 12, including an input
Pulse signal circuit 120 and a frequency signal circuit 130, the input pulse signal circuit 120 to provide preliminary filling power supply to
The thompson circuit 12, and when the frequency signal circuit 130 provides frequency signal coupling, so that hoist point reaches high
The quasi- current potential of voltage.
Fig. 3 is the control circuit schematic diagram of one embodiment of the application, Fig. 4 a is that displacement in exemplary array substrate is temporary
It deposits circuit diagram and Fig. 4 b is the control circuit schematic diagram in the array substrate of one embodiment of the application.Please refer to Fig. 3 and figure
4b, in the embodiment of the application, a kind of control circuit (citing: shift scratch circuit) 13, including multi-stage shift register,
Each shift register includes: a control terminal 101a electric property coupling one control of first switch a T10, the first switch T10
Signal ST is controlled described in a first end 101b electric property coupling of signal ST, the first switch T10, the first switch T10's
One second end 101c electric property coupling, one first node P1 (n)；And a second switch T20, a control of the second switch T20
Hold first node P1 (n) described in 201a electric property coupling, one frequency of the first end 201b electric property coupling letter of the second switch T20
Number CK, the one output pulse signal G (n) of a second end 201c electric property coupling of the second switch T20；The wherein first switch
T10 and second switch T20 difference electric property coupling one measures pad 400, to measure whether the control circuit 13 has circuit
It is abnormal.
In the embodiment of the application, a third switch T30, a control terminal of the third switch T30 are further included
Pulse is exported described in a first end 301b electric property coupling of 301a electric property coupling one second node P2 (n), the third switch T30
The low preset potential Vss of a second end 301c electric property coupling one of signal G (n), the third switch T30.
In the embodiment of the application, the third switch T30 electric property coupling one measures pad 400, described to measure
Whether control circuit 13 has circuit abnormality.
In the embodiment of the application, one the 4th switch T40, a control terminal of the 4th switch T40 are further included
First segment described in a first end 401b electric property coupling of second node P2 (n) described in 401a electric property coupling, the 4th switch T40
Low preset potential Vss described in a second end 401c electric property coupling of point P1 (n), the 4th switch T40.
In the embodiment of the application, the 4th switch T40 electric property coupling one measures pad 400, described to measure
Whether control circuit 13 has circuit abnormality.
In the embodiment of the application, a sub- pull-down circuit 310 is further included, the control circuit 13 is electrically coupled to
The first node P1 (n), the output pulse signal G (n) and the low preset potential Vss.
In the embodiment of the application, a sub- pull-down circuit controller 320 is further included, is electrically coupled to the control electricity
The low preset potential Vss on road 13 and the sub- pull-down circuit 310.
In the embodiment of the application, sub- 320 electric property coupling one of pull-down circuit controller measures pad 400, to
Measure whether the control circuit 13 has circuit abnormality.
Fig. 3 and Fig. 4 b is please referred to, in the embodiment of the application, a kind of control circuit (citing: shift scratch circuit)
13, including multi-stage shift register, each shift register include: a first switch T10, a control of the first switch T10
End 101a electric property coupling one processed controls signal ST, controls letter described in a first end 101b electric property coupling of the first switch T10
Number ST, the one first node P1 (n) of a second end 101c electric property coupling of the first switch T10；And a second switch T20,
The one of first node P1 (n) described in a control terminal 201a electric property coupling of the second switch T20, the second switch T20
A second end 201c electric property coupling one of one end 201b electric property coupling one frequency signal CK, the second switch T20 export pulse
Signal G (n)；The one second node P2 (n) of a control terminal 301a electric property coupling of one third switch T30, the third switch T30,
Output pulse signal G (n) described in a first end 301b electric property coupling of the third switch T30, the one of the third switch T30
The low preset potential Vss of second end 301c electric property coupling one；One the 4th switch T40, a control terminal 401a of the 4th switch T40
First node P1 described in a first end 401b electric property coupling of second node P2 (n) described in electric property coupling, the 4th switch T40
(n), low preset potential Vss described in a second end 401c electric property coupling of the 4th switch T40；One sub- pull-down circuit 310, electricity
Property is coupled to the first node P1 (n), the output pulse signal G (n) and the low default electricity of the control circuit 13
Position Vss；And a sub- pull-down circuit controller 320, be electrically coupled to the control circuit 13 the low preset potential Vss and
The sub- pull-down circuit 310；Wherein the first switch T10, the second switch T20, the third switch T30, described
Four switch T40 and the sub- pull-down circuit 310 difference electric property coupling one measure pad 400, are to measure the control circuit 13
It is no to have circuit abnormality.
Fig. 3 and Fig. 4 b is please referred to, in the embodiment of the application, a kind of display panel, comprising: (figure is not for first substrate
Show)；And the second substrate (not shown), it is oppositely arranged with the first substrate；It further include a kind of control circuit (citing: displacement
Buffering circuit) 13, including multi-stage shift register, each shift register include: a first switch T10, the first switch
A control terminal 101a electric property coupling one of T10 controls signal ST, a first end 101b electric property coupling institute of the first switch T10
State control signal ST, the one first node P1 (n) of a second end 101c electric property coupling of the first switch T10；And one second
First node P1 (n) described in a control terminal 201a electric property coupling of switch T20, the second switch T20, the second switch
A second end 201c electric property coupling one of a first end 201b electric property coupling one the frequency signal CK, the second switch T20 of T20
Output pulse signal G (n)；One second section of a control terminal 301a electric property coupling of one third switch T30, the third switch T30
Output pulse signal G (n) described in a first end 301b electric property coupling of point P2 (n), the third switch T30, the third are opened
Close the low preset potential Vss of a second end 301c electric property coupling one of T30；One the 4th switch T40, the one of the 4th switch T40
Described in a first end 401b electric property coupling of second node P2 (n) described in control terminal 401a electric property coupling, the 4th switch T40
Low preset potential Vss described in a second end 401c electric property coupling of first node P1 (n), the 4th switch T40；One son drop-down
Circuit 310 is electrically coupled to the first node P1 (n), the output pulse signal G (n) and institute of the control circuit 13
State low preset potential Vss；And a sub- pull-down circuit controller 320, it is electrically coupled to the described low pre- of the control circuit 13
If current potential Vss and the sub- pull-down circuit 310；Wherein the first switch T10, the second switch T20, third switch
T30, the 4th switch T40 and the sub- pull-down circuit 310 difference electric property coupling one measure pad 400, to measure the control
Whether circuit 13 processed has circuit abnormality.
Fig. 4 a and Fig. 4 b is please referred to, the control electricity in the embodiment of the application, in a kind of exemplary array substrate
Control circuit 16 its discrepancy in road 15 and a kind of array substrate, each of in the control circuit 16 in the array substrate
Thin film transistor (TFT) all electric property couplings one measure pad 400, to measure whether the control circuit 16 has circuit abnormality.
In some embodiments of the application, display panel may include liquid crystal display (Liquid Crystal Display,
LCD) panel, wherein liquid crystal display (Liquid Crystal Display, LCD) panel includes: switch arrays (thin film
Transistor, TFT) substrate, liquid crystal chromatic filter layer (color filter, CF) substrate and be formed between two substrates
Layer, display panel or be Organic Light Emitting Diode (Organic Light-Emitting Diode, OLED) panel or quantum
Point luminescent diode (Quantum Dots Light-Emitting Diode, QLED) panel.
The application is conducive to the circuit abnormality that parsing drives in grid array, therefore every thin film transistor (TFT) on circuit is all
Measurement pad is added, whether has circuit abnormality to measure.
" in some embodiments " and " in various embodiments " terms are used repeatedly etc..The term is not usually
Refer to identical embodiment；But it may also mean that identical embodiment.The words such as "comprising", " having " and " comprising " are synonymous
Word, unless its context meaning shows other meanings.
The above is only embodiments herein, not makes any form of restriction to the application, although the application
It is disclosed above with specific embodiment, however it is not limited to the application, any person skilled in the art, not
It is detached within the scope of technical scheme, when the technology contents using the disclosure above make a little change or are modified to equivalent change
The equivalent embodiment of change, but all contents without departing from technical scheme, the technical spirit according to the application is to the above reality
Any simple modification, equivalent change and modification made by example are applied, in the range of still falling within technical scheme.
Claims (10)
1. a kind of control circuit, which is characterized in that including multi-stage shift register, each shift register includes:
One first switch, a control terminal electric property coupling one control signal of the first switch, the one first of the first switch
Signal, one first node of a second end electric property coupling of the first switch are controlled described in the electric property coupling of end；And
One second switch, first node described in a control terminal electric property coupling of the second switch, the one of the second switch
One frequency signal of one end electric property coupling, one output pulse signal of a second end electric property coupling of the second switch；
The wherein first switch and the second switch difference measurement pad of electric property coupling one are to measure the control circuit
It is no to have circuit abnormality.
2. control circuit as described in claim 1, which is characterized in that it further includes a third and switchs, the one of the third switch
One second node of control terminal electric property coupling, output pulse signal described in a first end electric property coupling of third switch are described
The low preset potential of a second end electric property coupling one of third switch.
3. control circuit as claimed in claim 2, which is characterized in that the third switch electric property coupling one measurement pad, to
Measure whether the control circuit has circuit abnormality.
4. control circuit as claimed in claim 2, which is characterized in that it further includes one the 4th and switchs, the one of the 4th switch
Second node described in control terminal electric property coupling, first node described in a first end electric property coupling of the 4th switch, described the
Low preset potential described in one second end electric property coupling of four switches.
5. control circuit as claimed in claim 4, which is characterized in that the 4th switch electric property coupling one measurement pad, to
Measure whether the control circuit has circuit abnormality.
6. control circuit as claimed in claim 2, which is characterized in that further include a sub- pull-down circuit, be electrically coupled to described
The first node, the output pulse signal and the low preset potential of control circuit.
7. control circuit as claimed in claim 6, which is characterized in that further include a sub- pull-down circuit controller, electric property coupling
The low preset potential and the sub- pull-down circuit in the control circuit.
8. control circuit as claimed in claim 7, which is characterized in that the sub- pull-down circuit controller electric property coupling one measures
Pad, to measure whether the control circuit has circuit abnormality.
9. a kind of control circuit, which is characterized in that including multi-stage shift register, each shift register includes:
One first switch, a control terminal electric property coupling one control signal of the first switch, the one first of the first switch
Signal, one first node of a second end electric property coupling of the first switch are controlled described in the electric property coupling of end；
One second switch, first node described in a control terminal electric property coupling of the second switch, the one of the second switch
One frequency signal of one end electric property coupling, one output pulse signal of a second end electric property coupling of the second switch；
One third switch, one second node of a control terminal electric property coupling of the third switch, the one first of the third switch
Hold output pulse signal described in electric property coupling, the low preset potential of a second end electric property coupling one of the third switch；
One the 4th switch, second node described in a control terminal electric property coupling of the 4th switch, the one the of the 4th switch
First node described in the electric property coupling of one end, it is described 4th switch a second end electric property coupling described in low preset potential；
One sub- pull-down circuit is electrically coupled to the first node of the control circuit, the output pulse signal and described
Low preset potential；And
One sub- pull-down circuit controller, the low preset potential and the sub- drop-down for being electrically coupled to the control circuit are electric
Road；
The wherein first switch, the second switch, third switch, the 4th switch and the sub- pull-down circuit point
The other measurement of electric property coupling one pad, to measure whether the control circuit has circuit abnormality.
10. a kind of display panel characterized by comprising
First substrate；And
The second substrate is oppositely arranged with the first substrate；
It is characterized by also including a kind of control circuit, including multi-stage shift register, each shift register includes:
One first switch, a control terminal electric property coupling one control signal of the first switch, the one first of the first switch
Signal, one first node of a second end electric property coupling of the first switch are controlled described in the electric property coupling of end；
One second switch, first node described in a control terminal electric property coupling of the second switch, the one of the second switch
One frequency signal of one end electric property coupling, one output pulse signal of a second end electric property coupling of the second switch；
One third switch, one second node of a control terminal electric property coupling of the third switch, the one first of the third switch
Hold output pulse signal described in electric property coupling, the low preset potential of a second end electric property coupling one of the third switch；
One the 4th switch, second node described in a control terminal electric property coupling of the 4th switch, the one the of the 4th switch
First node described in the electric property coupling of one end, it is described 4th switch a second end electric property coupling described in low preset potential；
One sub- pull-down circuit is electrically coupled to the first node of the control circuit, the output pulse signal and described
Low preset potential；And
One sub- pull-down circuit controller, the low preset potential and the sub- drop-down for being electrically coupled to the control circuit are electric
Road；
The wherein first switch, the second switch, third switch, the 4th switch and the sub- pull-down circuit point
The other measurement of electric property coupling one pad, to measure whether the control circuit has circuit abnormality.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811572095.9A CN109493823A (en) | 2018-12-21 | 2018-12-21 | Control circuit and display panel applying same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811572095.9A CN109493823A (en) | 2018-12-21 | 2018-12-21 | Control circuit and display panel applying same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109493823A true CN109493823A (en) | 2019-03-19 |
Family
ID=65711254
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811572095.9A Pending CN109493823A (en) | 2018-12-21 | 2018-12-21 | Control circuit and display panel applying same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109493823A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02127615A (en) * | 1988-11-08 | 1990-05-16 | Sanyo Electric Co Ltd | Driving method for liquid crystal display device |
| CN1299124A (en) * | 1999-12-09 | 2001-06-13 | 精工爱普生株式会社 | Photoelectric device, clock signal regulation method and circuit therefor, and prodn. method therefor |
| JP2002116423A (en) * | 2000-10-10 | 2002-04-19 | Sharp Corp | Liquid crystal display device and its inspecting method |
| CN1497512A (en) * | 2002-09-27 | 2004-05-19 | ������������ʽ���� | Signal transmission circuit and display equipment |
| CN103714770A (en) * | 2012-09-28 | 2014-04-09 | 乐金显示有限公司 | Shift register and flat panel display device having the same |
| CN107146584A (en) * | 2017-05-05 | 2017-09-08 | 惠科股份有限公司 | Shift register circuit, waveform generation method thereof and display panel applying same |
-
2018
- 2018-12-21 CN CN201811572095.9A patent/CN109493823A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02127615A (en) * | 1988-11-08 | 1990-05-16 | Sanyo Electric Co Ltd | Driving method for liquid crystal display device |
| CN1299124A (en) * | 1999-12-09 | 2001-06-13 | 精工爱普生株式会社 | Photoelectric device, clock signal regulation method and circuit therefor, and prodn. method therefor |
| JP2002116423A (en) * | 2000-10-10 | 2002-04-19 | Sharp Corp | Liquid crystal display device and its inspecting method |
| CN1497512A (en) * | 2002-09-27 | 2004-05-19 | ������������ʽ���� | Signal transmission circuit and display equipment |
| CN103714770A (en) * | 2012-09-28 | 2014-04-09 | 乐金显示有限公司 | Shift register and flat panel display device having the same |
| CN107146584A (en) * | 2017-05-05 | 2017-09-08 | 惠科股份有限公司 | Shift register circuit, waveform generation method thereof and display panel applying same |
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Application publication date: 20190319 |