CN105607362B - A kind of shift register cell, gate driving circuit and display base plate - Google Patents
A kind of shift register cell, gate driving circuit and display base plate Download PDFInfo
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- CN105607362B CN105607362B CN201610005439.2A CN201610005439A CN105607362B CN 105607362 B CN105607362 B CN 105607362B CN 201610005439 A CN201610005439 A CN 201610005439A CN 105607362 B CN105607362 B CN 105607362B
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- shift register
- electrode
- capacitor
- display
- register unit
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- 239000003990 capacitor Substances 0.000 claims abstract description 61
- 239000000758 substrate Substances 0.000 claims abstract description 59
- 238000004146 energy storage Methods 0.000 claims abstract description 16
- 238000005516 engineering process Methods 0.000 abstract description 5
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 abstract description 3
- 239000004020 conductor Substances 0.000 abstract 2
- 238000000034 method Methods 0.000 description 12
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 238000007740 vapor deposition Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1345—Conductors connecting electrodes to cell terminals
- G02F1/13454—Drivers integrated on the active matrix substrate
-
- 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
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C19/00—Digital stores in which the information is moved stepwise, e.g. shift registers
- G11C19/28—Digital stores in which the information is moved stepwise, e.g. shift registers using semiconductor elements
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- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Mathematical Physics (AREA)
- Optics & Photonics (AREA)
- Computer Hardware Design (AREA)
- Theoretical Computer Science (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The present invention discloses a kind of shift register cell, gate driving circuit and display base plate, it is related to field of display technology, area for solution capacitor as included by the energy-storage module part in shift register cell is larger, the problem of caused shift register cell occupies biggish space, is unfavorable for narrow frameization development.The shift register cell includes: input module, reseting module, output module and the capacitor as energy-storage module；Input module, reseting module and output module are respectively positioned on the non-display area of display base plate, and capacitor is located at the display area of display base plate；Capacitor includes first electrode and second electrode, and first electrode is a grid line in the display area of array substrate；Second electrode is the contact conductor opposite with first electrode, and contact conductor is connected by connecting lead wire with the upper drawknot node in shift register cell.Shift register cell provided by the invention is used to provide driving signal for display base plate.
Description
Technical Field
The invention relates to the technical field of display, in particular to a shift register unit, a gate drive circuit and a display substrate.
Background
With the continuous development of display technologies, more and more display devices adopt a Gate On Array (GOA) technology, in which a Gate driver circuit is directly integrated in a non-display area of an array substrate, thereby reducing the frame width of the array substrate to a great extent; in addition, the GOA technology avoids connecting the gate drive circuit with the array substrate through a flexible connecting piece, so that the corresponding manufacturing process of the display device is reduced in the manufacturing process, and the productivity of enterprises is improved.
At present, referring to fig. 1, a gate driving circuit generally includes a plurality of shift register units, and an energy storage module portion in each shift register unit includes an energy storage capacitor 1 connected to a gate line 2 on an array substrate, and since the area of the energy storage capacitor 1 is relatively large, the shift register unit occupies a large space, which is not favorable for the development of narrow frame of the array substrate.
Disclosure of Invention
The invention aims to provide a shift register unit, a gate driving circuit and a display substrate, which are used for solving the problems that the shift register unit occupies a larger space and is not beneficial to narrow-frame development due to the larger area of a capacitor included in an energy storage module part in the shift register unit.
In order to achieve the above purpose, the invention provides the following technical scheme:
a shift register unit, the shift register unit is arranged on a display substrate, the shift register unit comprises: the device comprises an input module, a reset module, an output module and a capacitor serving as an energy storage module; the input module, the reset module and the output module are all positioned in a non-display area of the display substrate, and the capacitor is positioned in a display area of the display substrate; the capacitor comprises a first electrode and a second electrode, the first electrode is a grid line positioned in a display area of the array substrate, and the grid line is connected with the output end of the shift register unit; the second electrode is an electrode lead opposite to the first electrode, and the electrode lead is connected with a pull-up node in the shift register unit through a connecting lead.
The invention also provides a grid driving circuit which comprises a plurality of shift register units.
The invention also provides a display substrate which comprises the grid drive circuit.
Compared with the prior art, the invention has the beneficial effects that:
in the shift register unit provided by the invention, the first electrode of the capacitor as the energy storage module is connected with the output end of the shift register unit, and the output end of the shift register unit is directly connected with the grid line positioned on the display area of the array substrate; the second electrode of the capacitor is connected with a pull-up node in the shift register unit; therefore, when the capacitor is introduced into the display area of the display substrate, one grid line positioned in the display area of the array substrate can be directly used as a first electrode of the capacitor; an electrode lead wire opposite to the first electrode is arranged to serve as a second electrode of the capacitor, and the second electrode is connected with a pull-up node in the shift register unit through a connecting lead wire, so that the capacitor is moved from a non-display area of the display substrate to a display area of the display substrate; because the connection mode of the capacitor when the capacitor is arranged in the display area of the display substrate is the same as the connection mode of the capacitor when the capacitor is arranged in the non-display area of the display substrate, namely, the function of the capacitor is not changed, the capacitor is integrated in the display area of the display substrate from the non-display area of the display substrate while the function of the capacitor is not changed, the space occupied by the shift register is reduced, and the display substrate can realize the design of a narrower frame.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic diagram of a prior art storage capacitor located in a non-display region of a display substrate;
FIG. 2 is a schematic diagram illustrating a positional relationship between a shift register unit and a display substrate according to an embodiment of the present invention;
fig. 3 is an enlarged view of the structure of the portion a in fig. 2.
Reference numerals:
1-an energy storage capacitor, 2-a gate line,
3-electrode lead, 4-connecting lead,
5-via hole, 6-output module,
7-the display area of the display substrate, 8-the non-display area of the display substrate.
Detailed Description
In order to further explain the shift register unit, the gate driving circuit and the display substrate provided by the embodiment of the invention, the following detailed description is made with reference to the accompanying drawings.
Referring to fig. 2 and fig. 3, in a shift register unit provided in an embodiment of the present invention, the shift register unit is disposed on a display substrate, and the shift register unit includes: the device comprises an input module, a reset module, an output module 6 and a capacitor serving as an energy storage module; the input module, the reset module and the output module 6 are all positioned in a non-display area 8 of the display substrate, and the capacitor is positioned in a display area 7 of the display substrate; the capacitor comprises a first electrode and a second electrode, the first electrode is a grid line 2 positioned in a display area of the array substrate, and the grid line 2 is connected with the output end of the shift register unit; the second electrode is an electrode lead 3 opposite to the first electrode, and the electrode lead 3 is connected with a pull-up node in the shift register unit through a connecting lead 4.
When the shift register unit works, the input module sequentially provides a first line scanning signal to an ith line scanning signal (i is an integer more than or equal to 1), when the first row scanning signal drives the output module 6 corresponding to the first row scanning signal, the first row scanning signal simultaneously charges the energy storage module corresponding to the second row scanning signal, when the second line scanning signal arrives, the energy storage module corresponding to the second line scanning signal turns on the output module 6 corresponding to the second line scanning signal, so that the second line scanning signal drives the output module 6 corresponding to the second line scanning signal, meanwhile, the second line scanning signal controls the reset unit to reset the pull-up node corresponding to the first line scanning signal so as to close the output module 6 corresponding to the first line scanning signal, the second line scanning signal also charges an energy storage module corresponding to the third line scanning signal; and by analogy, the driving of each row of scanning signals to the output module 6 is completed.
In the shift register unit provided in the embodiment of the present invention, the first electrode of the capacitor serving as the energy storage module is connected to the output end of the shift register unit, and the output end of the shift register unit is directly connected to the gate line 2 located on the display region of the array substrate; the second electrode of the capacitor is connected with a pull-up node in the shift register unit; therefore, when the capacitor is introduced into the display area 7 of the display substrate, one gate line 2 in the display area of the array substrate can be directly used as a first electrode of the capacitor; then, an electrode lead 3 opposite to the first electrode is arranged to serve as a second electrode of the capacitor, and the second electrode is connected with a pull-up node in the shift register unit through a connecting lead 4, so that the capacitor is moved from a non-display area 8 of the display substrate to a display area 7 of the display substrate; because the connection mode of the capacitor when the capacitor is arranged in the display area 7 of the display substrate is the same as the connection mode of the capacitor when the capacitor is arranged in the non-display area 8 of the display substrate, namely, the function of the capacitor is not changed, the capacitor is integrated in the display area 7 of the display substrate from the non-display area 8 of the display substrate while the function of the capacitor is not changed, the space occupied by the shift register is reduced, and the design of a narrower frame of the display substrate can be realized.
It should be noted that the electrode lead 3 provided in the above embodiment is used as a second electrode of a capacitor, and needs to be parallel to the gate line 2 used as a first electrode and have a facing area, so that the electrode lead 3 and the gate line 2 can form a capacitor; and the position of the electrode lead 3 can be arranged on the array substrate or the color film substrate according to actual needs, as long as the electrode lead and the gate line 2 can form a capacitor.
In addition, the shift register unit provided by the embodiment is not only suitable for the twisted nematic display screen, but also suitable for a touch full-embedded display screen, a super-high-level super-dimensional field switch technology display screen and the like.
The electrode lead 3 and the connection lead 4 provided in the above embodiment may be an integral structure, or two separate structures connected to each other; in the practical application process, preferably, the electrode lead 3 and the connecting lead 4 are of an integral structure, and because no connecting part exists between the electrode lead 3 and the connecting lead 4 of the integral structure, the capacitor is not easy to damage in the working process and has long service life; further, the electrode lead 3 and the connection lead 4 are selected as an integral structure, and when the electrode lead 3 and the connection lead 4 are formed, the electrode lead 3 and the connection lead 4 can be formed at one time by a vapor deposition method without increasing an extra operation. There are various methods of forming the electrode lead 3 and the connection lead 4 at one time, and the method is not limited to the above vapor deposition method.
The electrode lead 3 and the connection lead 4 are made of various materials, for example: metals, indium tin oxide, and the like; when metal is selected as the electrode lead 3 and the connecting lead 4, according to actual needs, metal with good conductivity such as platinum and copper can be selected, or metal with relatively low cost which can meet the conductivity can be selected; when the indium tin oxide is selected as the electrode lead 3 and the connecting lead 4, since the indium tin oxide has good conductivity and can cut off electron radiation, ultraviolet rays, far infrared rays and the like harmful to human bodies, and the pixel electrode in the display device generally adopts the material, the indium tin oxide is selected as the electrode lead 3 and the connecting lead 4, so that the normal work of the capacitor can be ensured, the electrode lead 3 and the connecting lead 4 can be formed together when the pixel electrode is formed, and the corresponding process is not required to be added for manufacturing the electrode lead 3 and the connecting lead 4; specifically, when the pixel electrode, the electrode lead 3, and the connection lead 4 are formed, an appropriate mask plate may be selected, and the pixel electrode, the electrode lead 3, and the connection lead 4 may be manufactured by one evaporation operation, but the method is not limited to this.
Because the capacitance values of the capacitors serving as the energy storage modules in different shift register units are different, in order to meet the requirements of different shift register units on the capacitance values of the capacitors, the capacitance values of the capacitors are required to be adjusted according to the requirements of the shift register units in which the capacitors are arranged; in the capacitor provided in the above embodiment, the first electrode is the gate line 2 located on the display region of the array substrate, and the second electrode is the electrode lead 3 opposite to the first electrode; because the length of the grid line 2 is generally a fixed length, and the length of the electrode lead 3 is not fixed, the electrode lead 3 with different lengths can be manufactured according to the requirement on capacitance value of the capacitor in the actual shift register unit; namely, when the capacitance value of the required capacitance is larger, the electrode lead 3 with longer length is manufactured, and when the capacitance value of the required capacitance is smaller, the electrode lead 3 with shorter length is manufactured; in addition, when the electrode lead 3 with different lengths is manufactured, only a proper mask plate needs to be selected, and other operations are the same as the forming process of the electrode lead 3.
With reference to fig. 2, the capacitance formed by the electrode lead 3 and the gate line 2 provided in the above embodiment is a parallel plate capacitance, that is, the size of the facing area of the electrode lead 3 and the gate line 2 may have a certain influence on the capacitance value of the parallel plate capacitance, and there are many factors that influence the facing area of the electrode lead 3 and the gate line 2, wherein a common factor is that the placement position of the mask plate is deviated in the formation process of the electrode lead 3; when the position of the mask plate is deviated, the corresponding electrode lead 3 formed by the mask plate and the grid line 2 are staggered, and the actual facing area of the electrode lead 3 and the grid electrode is smaller than the required facing area of the parallel plate capacitor due to the staggered phenomenon, so that the capacitance value of the formed parallel plate capacitor is small, and the requirement of a shift register unit cannot be met.
In order to avoid the influence on the capacitance value of the capacitor caused by the size of the facing area, the width of the electrode lead 3 can be made to be smaller than that of the gate line 2 in the process of forming the electrode lead 3, so that even if the placing position of the mask plate has deviation in the forming process of the electrode lead 3, the whole area of the electrode lead 3 can be ensured to be the facing area formed by the electrode lead 3 and the gate line 2, and the influence on the capacitance value of the parallel plate capacitor caused by the deviation in the placing position of the mask plate is well avoided.
The electrode lead 3 provided in the above embodiment is used as a second electrode of a capacitor, and needs to be connected to a pull-up node in a shift register unit, and according to the actual position relationship between the pull-up node and the electrode lead 3, the pull-up node and the electrode lead 3 generally do not lie on the same plane, in this case, the connection lead 4 needs to be connected to the electrode lead 3 through the via hole 5, and the connection between the pull-up node and the electrode lead 3 is realized through the via hole 5, so that the connection lead 4 can occupy a larger space, and the problem of interference caused by the fact that the connection lead 4 is parallel to or directly intersected with a trace on a display substrate or a shift register unit is well avoided.
The embodiment of the invention also provides a gate driving circuit, which comprises a plurality of shift register units provided by the embodiment, and the gate driving circuit comprises a plurality of shift register units, namely all capacitors serving as storage modules in the gate driving circuit are positioned in a display area 7 of a display substrate, so that the space occupied by the gate driving circuit on the display substrate is reduced, and the narrow-frame development of the display substrate is well realized.
The embodiment of the invention also provides a display substrate, which comprises the gate driving circuit provided by the embodiment, and the beneficial effects of the display substrate are the same as those of the gate driving circuit, and are not repeated herein.
In the foregoing description of embodiments, the particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (7)
1. A shift register unit, wherein the shift register unit is disposed on a display substrate, the shift register unit comprising: the device comprises an input module, a reset module, an output module and a capacitor serving as an energy storage module; wherein,
the input module, the reset module and the output module are all positioned in a non-display area of the display substrate, and the capacitor is positioned in a display area of the display substrate;
the capacitor comprises a first electrode and a second electrode, the first electrode is a grid line positioned in a display area of the array substrate, and the grid line is connected with the output end of the shift register unit; the second electrode is an electrode lead opposite to the first electrode, and the electrode lead is connected with a pull-up node in the shift register unit through a connecting lead;
the width of the electrode lead is smaller than that of the gate line.
2. The shift register unit according to claim 1, wherein the second electrode is located on an array substrate or a color filter substrate.
3. The shift register cell of claim 1, wherein the electrode leads and the connecting leads are of a unitary structure.
4. The shift register unit according to claim 3, wherein the electrode leads and the connecting leads are made of ITO.
5. The shift register cell of any one of claims 1-4, wherein the connecting leads are connected to the pull-up nodes by vias.
6. A gate drive circuit comprising a plurality of shift register cells according to any one of claims 1 to 5.
7. A display substrate comprising the gate driver circuit as claimed in claim 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610005439.2A CN105607362B (en) | 2016-01-04 | 2016-01-04 | A kind of shift register cell, gate driving circuit and display base plate |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610005439.2A CN105607362B (en) | 2016-01-04 | 2016-01-04 | A kind of shift register cell, gate driving circuit and display base plate |
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| CN105607362A CN105607362A (en) | 2016-05-25 |
| CN105607362B true CN105607362B (en) | 2019-01-04 |
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| CN110727149B (en) * | 2019-11-20 | 2022-08-23 | 京东方科技集团股份有限公司 | Display substrate, preparation method and display device |
| CN114283746B (en) * | 2021-12-29 | 2023-05-23 | 上海中航光电子有限公司 | Display panel and display device |
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| US20120161820A1 (en) * | 2010-12-27 | 2012-06-28 | Bon-Yong Koo | Gate drive circuit, display substrate having the same and method of manufacturing the display substrate |
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