CN100381930C - Liquid crystal display device - Google Patents
Liquid crystal display device Download PDFInfo
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- CN100381930C CN100381930C CNB2005100897450A CN200510089745A CN100381930C CN 100381930 C CN100381930 C CN 100381930C CN B2005100897450 A CNB2005100897450 A CN B2005100897450A CN 200510089745 A CN200510089745 A CN 200510089745A CN 100381930 C CN100381930 C CN 100381930C
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- pixel cell
- pixel
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Abstract
The present invention relates to a liquid crystal display apparatus which comprises a plurality of sweeping electrodes, a plurality of data electrodes, storage capacitance electrodes, a pixel unit and an external extension electrode, wherein the sweeping electrodes are configured in sequence by the first direction, and the data electrodes are configured in sequence by the second direction and are mutually staggered with the sweeping electrodes. The storage capacitance electrodes are arranged between the two adjacent sweeping electrodes. The pixel unit is respectively configured between the two adjacent sweeping electrodes which are mutually staggered and between the two adjacent data electrodes and has pixel electrodes. The external extension electrode is arranged outside the pixel unit and is electrically connected with one of the two corresponding sweeping electrodes and the storage capacitance electrode.
Description
Technical field
The present invention relates to a kind of liquid crystal indicator, particularly relate to a kind of structure of pixel cell.
Background technology
Thin Film Transistor-LCD (thin film transistor liquid crystal display, to call TFT-LCD in the following text) the array of display kenel, along with reservior capacitor (storage capacitor, the Cs) difference of framework, and form different array kenels.General common reservior capacitor framework can be divided into two kinds, is respectively that reservior capacitor utilizes last scan electrode (Cs on gate) and the framework that forms utilizes common electrode wire (Cs on common) and the framework of formation with reservior capacitor.Two kinds of main difference of framework are that reservior capacitor is between pixel electrode and last scan electrode, or between pixel electrode and common electrode wire, the reference potential that is reservior capacitor is the current potential of last scan electrode, or the current potential of common electrode wire.
Fig. 1 represents the existing formed LCD array of capacitor architecture of utilizing last scan electrode (Cs on gate).LCD array 1 is by crisscross data electrode D
1To D
2And scan electrode G
1To G
3Constitute.Each staggered scan electrode and data electrode defines a pixel cell.Each pixel cell has transistor, liquid crystal capacitance and reservior capacitor, and reservior capacitor is coupled between pixel electrode and last the scan electrode.For example, data electrode D
2With scan electrode G
3Define a pixel cell 100, pixel cell 100 has transistor T FT, liquid crystal capacitance Clc and reservior capacitor Cs.As shown in Figure 1, the grid of transistor T FT is coupled to scan electrode G
3, and reservior capacitor Cs is coupled to pixel electrode PE and last scan electrode G
2Between.Be arranged in the pixel cell of same row, transistor is coupled to the same scan electrode, and reservior capacitor all is coupled between separately the pixel electrode and last scan electrode.
Fig. 2 represents the existing formed LCD array of capacitor architecture of utilizing common electrode wire (Cs on common).LCD array 2 is by crisscross data electrode D
1To D
2And scan electrode G
1To G
2Constitute.Each staggered scan electrode and data electrode defines a pixel cell.Each pixel cell has transistor, liquid crystal capacitance and reservior capacitor, and reservior capacitor is coupled between pixel electrode and the common electrode wire.For example, data electrode D
2With scan electrode G
2Define a pixel cell 200, pixel cell 200 has transistor T FT, liquid crystal capacitance Clc and reservior capacitor Cs.As shown in Figure 2, the grid of transistor T FT is coupled to scan electrode G
2, and reservior capacitor Cs couples between pixel electrode PE and the common electrode wire com.At the reservior capacitor of the pixel cell of same column, be coupled between pixel electrode and the identical common electrode wire separately.
Fig. 3 represents existing pixel cell planimetric map with common electrode wire utilized (Cs on common) capacitor architecture.With pixel cell 200 is example, and common electrode com is disposed between two adjacent scan electrode G
1And G
2Between, and common electric voltage Vcom is provided.Two adjacent scan electrode G
1And G
2With two adjacent data electrode D
1And D
2Define pixel cell 200.Pixel electrode PE is covered in the top of common electrode com.Reservior capacitor Cs is formed between pixel electrode PE and the common electrode com.With transistor T FT is that the N type is an example, and its grid is coupled to scan electrode G
2, its drain electrode couples data electrode D
2, and its source electrode couples pixel electrode PE.
(multidomain vertical alignment, in liquid crystal indicator MVA), the array of display kenel is many to utilize common electrode wire (Cs on common) capacitor architecture to dispose at multiregional vertical align.Consult Fig. 2, as scan electrode G
2When driving pixel cell 200, transistor T FT conducting, data electrode D
2Then transmit the corresponding image data to pixel electrode PE.At this moment, pixel electrode PE has the voltage Vdata for image data.And stored electric charge is Q=Cs * Δ V in the reservior capacitor Cs, again Δ V=|Vdata-Vcom|.Because common electric voltage Vcom is generally 5V, therefore, Δ V is less.Relative, the quantity of electric charge that reservior capacitor Cs can store is less, can cause the quantity of electric charge deficiency of pixel cell eventually, makes that the liquid crystal reaction time is longer, causes picture inhomogeneous.
Summary of the invention
In view of this, in order to address the above problem, fundamental purpose of the present invention is to provide a kind of liquid crystal indicator, comprises multi-strip scanning electrode, many data electrodes, storage capacitors electrode, pixel cell and outside extension electrodes.The multi-strip scanning electrode disposes in regular turn with first direction, and many data electrodes dispose in regular turn with second direction, and interlaced with the multi-strip scanning electrode.The storage capacitors electrode is configured between the two adjacent scan electrodes.Pixel cell is disposed between interlaced two adjacent scan electrodes and the two adjacent data electrodes, and has pixel electrode.Outside extension electrode is disposed at the outside of pixel cell, and is electrically connected one and storage capacitors electrode of two corresponding scan electrodes.
In certain embodiments, pixel cell comprises an auxiliary electrode, is configured in the pixel cell, and is electrically connected the scan electrode that the storage capacitors electrode is electrically connected with this outside extension electrode.
The present invention also proposes a kind of liquid crystal indicator, comprises multi-strip scanning electrode, many data electrodes, pixel cell and outside extension electrodes.The multi-strip scanning electrode disposes in regular turn with first direction, and many data electrodes dispose in regular turn with second direction, and interlaced with many scan electrodes.Pixel cell is disposed between interlaced two adjacent scan electrodes and the two adjacent data electrodes, and has pixel electrode.Outside extension electrode is disposed at the outside of pixel cell, and is electrically connected of two corresponding scan electrodes.Wherein, pixel cell comprises an auxiliary electrode, is electrically connected the scan electrode that outside extension electrode is electrically connected with outside extension electrode.
For above-mentioned purpose of the present invention, feature and advantage can be become apparent, a preferred embodiment cited below particularly, and conjunction with figs. is described in detail below.
Description of drawings
Fig. 1 represents the formed LCD array of capacitor architecture of existing last scan electrode (Cs on gate).
Fig. 2 represents the existing formed LCD array of capacitor architecture of utilizing common electrode wire (Cs on common).
Fig. 3 represents existing pixel cell planimetric map with common electrode wire utilized (Cs on common) capacitor architecture.
Fig. 4 represents the framework planimetric map of pixel cell of the liquid crystal indicator of first embodiment of the invention.
Fig. 5 A to 5C represents to have according to first embodiment framework planimetric map of the pixel cell of auxiliary electrode.
Fig. 6 represents the framework planimetric map of pixel cell of the liquid crystal indicator of second embodiment of the invention.
The simple symbol explanation
1,2～LCD array; 40,60～outside extension electrode; 41,61～pixel cell row; 42,62～auxiliary electrode; 100,200,400,600～pixel cell; CE～storage capacitors electrode Clc～liquid crystal capacitance; Cs～reservior capacitor; D
1... D
m～data electrode; G
1... G
3～scan electrode; PE～pixel electrode; TFT～transistor.
Embodiment
First embodiment:
Fig. 4 represents the framework planimetric map of pixel cell of the liquid crystal indicator of first embodiment of the invention.Scan electrode G
1And G
2Dispose with column direction (first direction).Data electrode D
1And D
mWith line direction (second direction) configuration, and with scan electrode G
1And G
2Staggered.Scan electrode defines a pixel cell with the two adjacent data electrodes that interlock, for instance, and scan electrode G
1And G
2With data electrode D
1And D
2Define pixel cell 400.One storage capacitors electrode CE is disposed at adjacent scan electrode G
1And G
2Between.Pixel electrode PE is covered in storage capacitors electrode CE top.In the present embodiment, scan electrode G
1And G
2With data electrode D
1And D
mForm many pixel cells of row, the pixel cell of multiple row then forms an array of display.For convenience of description, Fig. 4 only represents pixel cell row 41.
Consult Fig. 4, pixel cell 400 has transistor T FT and reservior capacitor Cs.In the present embodiment, transistor T FT is an example with the N transistor npn npn.The control electrode of transistor T FT (grid) is electrically connected scan electrode G
2, its first electrode (drain electrode) is electrically connected data electrode D
2, its second electrode (source electrode) is electrically connected pixel electrode PE.Storage capacitors Cs is formed between this storage capacitors electrode CE and the pixel electrode PE.In the present embodiment, also have outside extension electrode 40, be disposed at the outside of pixel cell 400, and be electrically connected scan electrode G
1With storage capacitors electrode CE.In other words, scan electrode G
1, outside extension electrode 40 and storage capacitors electrode CE be loaded with identical signal, promptly has identical current potential.When driving pixel cell 400, scan electrode G
1Current potential be generally negative value (approximately-6V), therefore, the Δ V in Q=Cs * Δ V formula increase, and makes the storable quantity of electric charge of reservior capacitor Cs increase, and accelerates the reaction time of liquid crystal by this and improves the phenomenon of flicker.
In this embodiment, outside extension electrode 40 is electrically connected scan electrode G by the pixel cell 400 that is positioned at first in pixel cell row 41
1With storage capacitors electrode CE.But when actual disposition,, can use according to structural arrangements, and outside extension electrode 40 is electrically connected scan electrode G by be positioned at the most last pixel cell in pixel cell row 41 not as restriction
1With storage capacitors electrode CE.In addition, in this embodiment, outside extension electrode 40 and scan electrode G
1And G
2Be metal with one deck.
In order to increase reservior capacitor Cs stability of structure, in each pixel cell, dispose auxiliary electrode, and auxiliary electrode is overlapped at least with corresponding pixel electrode.Consult Fig. 5 A, in pixel cell 400, auxiliary electrode 42 can be along one side of pixel electrode PE and is extended, and makes scan electrode G
1CE is electrically connected with the storage capacitors electrode.Consult Fig. 5 B, auxiliary electrode 42 also can be along the both sides of pixel electrode PE and is extended, and makes scan electrode G
1CE is electrically connected with the storage capacitors electrode.Perhaps, consult Fig. 5 C, auxiliary electrode 42 also can be along three limit of pixel electrode PE and is extended.
Consult Fig. 4 and Fig. 5 A to 5C, outside extension electrode 40 is electrically connected scan electrode G
1With storage capacitors electrode CE, auxiliary electrode 42 couples scan electrode G again
1With storage capacitors electrode CE.In other words, auxiliary electrode 42 is electrically connected outside extension electrode 40.
Second embodiment:
Fig. 6 represents the framework planimetric map of pixel cell of the liquid crystal indicator of second embodiment of the invention.Scan electrode G
1And G
2Dispose with column direction (first direction).Data electrode D
1And D
mWith line direction (second direction) configuration, and with scan electrode G
1And G
2Staggered.Scan electrode defines a pixel cell with the two adjacent data electrodes that interlock, for instance, and scan electrode G
1And G
2With data electrode D
1And D
2Define pixel cell 600.In the present embodiment, scan electrode G
1And G
2With data electrode D
1And D
mForm many pixel cells of row, the pixel cell of multiple row then forms array of display.For convenience of description, Fig. 6 only represents pixel cell row 61.
Consult Fig. 6, in the present embodiment, also have outside extension electrode 60, be disposed at the outside of pixel cell 600, and be electrically connected scan electrode G
1In addition, have auxiliary electrode in each pixel cell, and auxiliary electrode and the pixel electrode PE that covers are above it overlapped.In pixel cell 600, auxiliary electrode 62 can be along the extending of pixel electrode PE at least on one side, and be electrically connected scan electrode G
1With outside extension electrode 60.In the embodiment of Fig. 6, with auxiliary electrode 62 along three limits of pixel electrode PE and extend to example.
As shown in Figure 6, pixel cell 600 has transistor T FT and reservior capacitor Cs.In the present embodiment, transistor T FT is an example with the N transistor npn npn.The control electrode of transistor T FT (grid) is electrically connected scan electrode G
2, its first electrode (drain electrode) is electrically connected data electrode D
2, its second electrode (source electrode) is electrically connected pixel electrode PE.Storage capacitors Cs is formed between auxiliary electrode 62 and the pixel electrode PE.Because auxiliary electrode 62 and scan electrode G
1Be electrically connected auxiliary electrode 62 and scan electrode G
1Has identical current potential.When driving pixel cell 600, scan electrode G
1Current potential be generally negative value (approximately-6V), therefore, the Δ V in Q=Cs * Δ V formula increase, and makes the storable quantity of electric charge of reservior capacitor Cs increase, and improves the reaction time of liquid crystal by this and improves the phenomenon of flicker.
In this embodiment, outside extension electrode 60 is electrically connected scan electrode G by the pixel cell 600 that is positioned at first in pixel cell row 61
1With auxiliary electrode 62.But when actual disposition,, can use according to structural arrangements, and outside extension electrode 60 is electrically connected scan electrode G by be positioned at the most last pixel cell in pixel cell row 61 not as restriction
1With auxiliary electrode 62.
Though the present invention discloses as above with preferred embodiment; yet it is not in order to limit the present invention; those skilled in the art can do a little change and retouching without departing from the spirit and scope of the present invention, thus protection scope of the present invention should with accompanying Claim the person of being defined be as the criterion.
Claims (5)
1. liquid crystal indicator comprises:
The multi-strip scanning electrode disposes in regular turn with a first direction;
Many data electrodes dispose in regular turn with a second direction, and interlaced with these scan electrodes;
One pixel cell is disposed between interlaced two adjacent these scan electrodes and two adjacent these data electrodes, and has a pixel electrode;
One storage capacitors electrode is configured between two adjacent these scan electrodes and overlaps with the middle part of this pixel electrode;
One outside extension electrode is disposed at the outside of this pixel cell, and is electrically connected one of these corresponding scan electrodes and this storage capacitors electrode.
2. liquid crystal indicator as claimed in claim 1, wherein, this outside extension electrode is with one deck metal with corresponding this scan electrode.
3. liquid crystal indicator as claimed in claim 1, wherein, this pixel cell comprises an auxiliary electrode, is configured within this pixel cell, is electrically connected this scan electrode that this storage capacitors electrode is electrically connected with this outside extension electrode.
4. liquid crystal indicator as claimed in claim 3, wherein, this auxiliary electrode disposes at least on one side along this pixel electrode.
5. liquid crystal indicator as claimed in claim 4, wherein, this auxiliary electrode and this pixel electrode are overlapped at least.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100897450A CN100381930C (en) | 2005-08-05 | 2005-08-05 | Liquid crystal display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100897450A CN100381930C (en) | 2005-08-05 | 2005-08-05 | Liquid crystal display device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1719324A CN1719324A (en) | 2006-01-11 |
| CN100381930C true CN100381930C (en) | 2008-04-16 |
Family
ID=35931192
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100897450A Expired - Fee Related CN100381930C (en) | 2005-08-05 | 2005-08-05 | Liquid crystal display device |
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| Country | Link |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019015077A1 (en) * | 2017-07-20 | 2019-01-24 | 深圳市华星光电半导体显示技术有限公司 | Array substrate, manufacturing method therefor and liquid crystal display device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5517341A (en) * | 1992-06-01 | 1996-05-14 | Samsung Electronics Co., Ltd. | Liquid crystal display with TFT and capacitor electrodes with redundant connection |
| CN1314608A (en) * | 2000-03-17 | 2001-09-26 | 精工爱普生株式会社 | Electrooptics device |
| CN1366653A (en) * | 2000-04-24 | 2002-08-28 | 松下电器产业株式会社 | Display unit and drive method therefor |
| CN1564073A (en) * | 2004-03-30 | 2005-01-12 | 友达光电股份有限公司 | LCD array and LCD panel |
-
2005
- 2005-08-05 CN CNB2005100897450A patent/CN100381930C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5517341A (en) * | 1992-06-01 | 1996-05-14 | Samsung Electronics Co., Ltd. | Liquid crystal display with TFT and capacitor electrodes with redundant connection |
| CN1314608A (en) * | 2000-03-17 | 2001-09-26 | 精工爱普生株式会社 | Electrooptics device |
| CN1366653A (en) * | 2000-04-24 | 2002-08-28 | 松下电器产业株式会社 | Display unit and drive method therefor |
| CN1564073A (en) * | 2004-03-30 | 2005-01-12 | 友达光电股份有限公司 | LCD array and LCD panel |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019015077A1 (en) * | 2017-07-20 | 2019-01-24 | 深圳市华星光电半导体显示技术有限公司 | Array substrate, manufacturing method therefor and liquid crystal display device |
| US10365526B2 (en) | 2017-07-20 | 2019-07-30 | Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd | Array substrate, manufacturing method thereof, and display device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1719324A (en) | 2006-01-11 |
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