CN101425272A - Active element array for reducing scanning signal delay and planar display thereof - Google Patents
Active element array for reducing scanning signal delay and planar display thereof Download PDFInfo
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- CN101425272A CN101425272A CNA2007101850198A CN200710185019A CN101425272A CN 101425272 A CN101425272 A CN 101425272A CN A2007101850198 A CNA2007101850198 A CN A2007101850198A CN 200710185019 A CN200710185019 A CN 200710185019A CN 101425272 A CN101425272 A CN 101425272A
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- pixel
- sweep trace
- bar
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- scanning line
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Abstract
The invention relates to an array of active components used for reducing the delay of scanning signals and a flat-panel monitor using the array of active components. The array of active components comprises a plurality of pixels, scanning lines, data wires and auxiliary scanning lines, wherein each pixel is electrically connected with a corresponding scanning line and a data wire. Each scanning line is provided with a first end and a second end, and the first end is used for inputting scanning signals. The auxiliary scanning lines are corresponding to the scanning lines. One end of each auxiliary scanning line is electrically connected with the first end of the corresponding scanning line, and the other end of each auxiliary scanning line is electrically connected with the second end of the corresponding scanning line.
Description
Technical field
The invention relates to a kind of flat display apparatus, and particularly relevant for a kind of active cell array and use its flat-panel screens.
Background technology
In recent years, because the existing very big progress and development of image display technique, therefore traditional cathode-ray tube is replaced by so-called panel display gradually.Panel display is Thin Film Transistor-LCD (thin-film transistor liquid crystal display commonly generally, TFT-LCD), because have advantages such as low consumpting power, slimming, high-res, make it be promoted as the main flow of present display.
Fig. 1 illustrates the Organization Chart into conventional liquid crystal 100.Please refer to Fig. 1, LCD 100 comprises display panel 110, gate drivers 120 and source electrode driver 130.Gate drivers 120 has N drive end and M transmission ends respectively with source electrode driver 130, and is electrically connected to display panel 110 by drive end and transmission ends respectively.Display panel 110 comprises N bar sweep trace SL
1～SL
N, M bar data line DL
1～DL
MWith M*N pixel U
11～U
MN, wherein each pixel is electrically connected to its corresponding scanning beam and data line.
Please continue obviously to find out by the LCD among Fig. 1 100 that the N of gate drivers 120 drive end is electrically connected to corresponding scanning line SL separately with reference to Fig. 1
1～SL
N, and in regular turn to each sweep trace output one scan signal, so that can corresponding scanning beam SL
1～SL
NOn pixel U
11～U
MNYet, in the process that 120 pairs of pixels of gate drivers enable, because the late effect that dead resistance, electric capacity bring on the sweep trace makes the waveform generation of sweep signal change.
It is one to have the equivalent circuit diagram of the sweep trace of dead resistance, stray capacitance that Fig. 2 A illustrates.Fig. 2 B illustrates the wave form varies figure that transmits signal for the sweep trace that utilizes Fig. 2 A.Please also refer to Fig. 2 A and Fig. 2 B, the operator imports a signal SC in the terminal A of sweep trace, and from its terminal B measuring-signal SC, and the wave form varies of signal SC is shown in Fig. 2 B.Therefore, can learn by Fig. 2 A and Fig. 2 B, in the time of must elongating because of design requirement when sweep trace, the dead resistance on the sweep trace, electric capacity will certainly increase, and make the situation more obviously (voltage needs through arriving current potential V2 by current potential V1 one period time delay) of signal delay.That is to say that when design large scale liquid crystal display, because sweep trace is long, the situation of signal delay can be more serious than small-size display, cause the pixel of its back segment in time to be switched on and receive data-signal.This will make pixel influence its display quality because of undercharge.
So in order to solve the problem that above-mentioned conventional liquid crystal 100 is caused, it is to adopt bilateral driving circuit to drive the mode of pixel that a kind of technology is arranged at present.Fig. 3 illustrates the Organization Chart for the LCD 300 that adopts bilateral gate drivers.Please refer to Fig. 3, LCD 300 comprises display panel 110, two gate drivers 320,321 and source electrode drivers 330.The connected mode of LCD 300 and conventional liquid crystal 100 are similar, and difference is that display panel 110 is to be disposed between two gate drivers 320,321, whereby to receive the sweep signal at two ends.
This technology is in order to solve the late effect that dead resistance on the sweep trace, electric capacity are brought, and it utilizes gate drivers 320 and 321 to send sweep signal simultaneously, whereby with the pixel on the while driven sweep line.Therefore, 320 need of gate drivers are responsible on the driven sweep line pixel of half, and gate drivers 321 is responsible for driving second half pixels.In other words, on a sweep trace, a gate drivers is reduced to by a driving M pixel originally and drives M/2, makes the influence of late effect reduce to half.Similarly, another gate drivers also is so, so this technology can lower the influence of late effect effectively.
Though note that at this this technology can reduce the influence of late effect effectively, it still can derive other problem.For example, this technology must be considered the sweep signal problem of output synchronously.Because this technology is to send sweep signal simultaneously by two gate drivers, so when signal was asynchronous output, the two ends of sweep trace can produce potential difference (PD).That is to say that when an end of sweep trace is a high voltage level, the other end is that the low-voltage position is punctual, then sweep trace can produce an electric current, and this situation will cause extra power consumption.In addition, compare with conventional liquid crystal 100, LCD 300 needs many one times gate drivers, and gate drivers is not cheap, certainly will cause the rising of cost thus.
Summary of the invention
Purpose of the present invention is providing a kind of active cell array exactly, in order to solving the enabling in the process of panel pixel, since the resistance-capacitance effect on the sweep trace, the problem that causes voltage waveform to change.
A further object of the present invention provides a kind of flat-panel screens, avoids prior art because of adopting bilateral type of drive, causes system must bear extra power consumption and the rising of cost in manufacture process.
Based on above-mentioned purpose, the present invention proposes a kind of active cell array, and it comprises a plurality of pixels, multi-strip scanning line, many data lines and many sub-scanning lines.Wherein, each pixel is electrically connected to its pairing sweep trace and data line.Each bar sweep trace has first end and second end, and its first end is in order to the input scan signal.The sub-scanning line is man-to-man corresponding with sweep trace, and wherein an end of sub-scanning line is electrically connected to first end of its corresponding scanning beam, and the other end is electrically connected to second end of its corresponding scanning beam.
From another viewpoint, the present invention proposes a kind of flat-panel screens, and it comprises gate drivers, a plurality of pixel, multi-strip scanning line, many data lines and many sub-scanning lines.Wherein, each pixel is electrically connected to its pairing sweep trace and data line.Gate drivers comprises a plurality of drive ends, each drive end output one scan signal.Each bar sweep trace has first end and second end, and its first end is in order to the input scan signal.The sub-scanning line is man-to-man corresponding with sweep trace, and wherein an end of sub-scanning line is electrically connected to first end of its corresponding scanning beam, and the other end is electrically connected to second end of its corresponding scanning beam.
In one embodiment of this invention, the number of above-mentioned pixel is M * N, and the number of sweep trace is the N bar, and each bar sweep trace electrically connects M pixel, and wherein M, N are natural number.
In one embodiment of this invention, each above-mentioned pixel comprises thin film transistor (TFT) and pixel capacitance.Wherein, thin film transistor (TFT) is electrically connected to its corresponding scanning beam and data line.One end of pixel capacitance and thin film transistor (TFT) electrically connect, and its other end is electrically connected to a common electric potential.
In one embodiment of this invention, above-mentioned the i * j pixel electrically connects i bar data line and j bar sweep trace.
In one embodiment of this invention, an end of above-mentioned j bar sub-scanning line is electrically connected to the 1st * j pixel, and its other end is electrically connected to the M * j pixel.
The present invention inputs to the two ends of sweep trace because of utilizing many sub-scanning lines simultaneously with sweep signal, so can improve owing to the resistance-capacitance effect on the sweep trace, the problem that causes voltage waveform to change.In addition, the present invention adopts many sub-scanning lines can reach the effect of existing bilateral type of drive, so system need not bear extra power consumption, and can reduce expending of cost in manufacture process.
Description of drawings
For above-mentioned purpose of the present invention, feature and advantage can be become apparent, below in conjunction with accompanying drawing the specific embodiment of the present invention is elaborated, wherein:
Fig. 1 illustrates the Organization Chart into conventional liquid crystal 100.
It is one to have the equivalent circuit diagram of the sweep trace of dead resistance, stray capacitance that Fig. 2 A illustrates.
Fig. 2 B illustrates the wave form varies figure that transmits signal for the sweep trace that utilizes Fig. 2 A.
Fig. 3 illustrates the Organization Chart for the LCD 300 that adopts bilateral gate drivers.
Fig. 4 illustrates and is the synoptic diagram according to the active cell array 400 of one embodiment of the invention.
Fig. 5 illustrates and is the circuit diagram according to the flat-panel screens 500 of another embodiment of the present invention.
Fig. 6 A illustrates and is the sweep trace SL in the conventional liquid crystal 100 of Fig. 1
1Signal waveforms.
Fig. 6 B illustrates and is the sweep trace SL in the flat-panel screens 500 of Fig. 5
1Signal waveforms.
The main element symbol description:
100,300: LCD
110: display panel
120,320,321,510: gate drivers
130,330: source electrode driver
400: active cell array
500: flat-panel screens
SL
1～SL
N: sweep trace
DL
1～DL
M: data line
ASL
1～ASL
N: the sub-scanning line
U
11～U
MN: pixel
T
11～T
MN: transistor
C, C
11～C
MN: electric capacity
R: resistance
V1, V2, VC: current potential
SC: signal
A
1～A
N: first end of sweep trace
B
1～B
N: second end of sweep trace
Embodiment
Fig. 4 illustrates and is the synoptic diagram according to the active cell array 400 of one embodiment of the invention.Please refer to Fig. 4, active cell array 400 comprises M*N pixel (M, N are natural number) U
11～U
MN, N bar sweep trace SL
1～SL
N, N bar sub-scanning line ASL
1～ASL
NAnd M bar data line DL
1～DL
MWherein, pixel U
11～U
MNBe electrically connected to its corresponding scanning beam SL separately
1～SL
NWith data line DL
1～DL
M, for example the i * j pixel (is pixel U
Ij, 1 ≦ i ≦ M, 1 ≦ j ≦ N and i, j are natural number) and be electrically connected to corresponding i bar data line (data line DL
i) and j bar sweep trace (sweep trace SL
j).Sweep trace SL
1～SL
NHas the first end A
1～A
NWith the second end B
1～B
N, sub-scanning line ASL wherein
1～ASL
NTwo ends be electrically connected to its corresponding scanning beam SL respectively
1～SL
NThe first end A
1～A
NWith the second end B
1～B
NThat is to say j bar sub-scanning line ASL
jAn end be electrically connected to j bar sweep trace SL
jThe first end A
j, its other end then is electrically connected to j bar sweep trace SL
jThe second end B
j
In present embodiment, pixel U
11～U
MNComprise thin film transistor (TFT) T
11～T
MNWith pixel capacitance C
11～C
MN, thin film transistor (TFT) T wherein
11～T
MNGrid be electrically connected to corresponding scanning line separately, its source electrode also is electrically connected to corresponding data line separately.For example, pixel U
IjIn thin film transistor (TFT) T
Ij, its grid is electrically connected to j bar sweep trace, and its source electrode then is electrically connected to i bar data line.And pixel U
IjIn pixel capacitance C
Ij, the one end is electrically connected to thin film transistor (TFT) T
IjDrain electrode, its other end then is electrically connected to common electric potential VC.So, by being electrically connected to transistor T
11～T
MNThe pixel electrode (not illustrating) of drain electrode can drive corresponding liquid crystal molecule.
In addition, j bar sub-scanning line (sweep trace ASL
j) an end be electrically connected to the 1st * j pixel (pixel U
1j) thin film transistor (TFT) T
1jGrid, its other end is electrically connected to the M * j pixel (pixel U
Mj) thin film transistor (TFT) T
MjGrid.
Please continue with reference to Fig. 4, now with article one sweep trace (sweep trace SL
1) set forth spirit of the present invention for example.Behind the first end A1 of sweep trace SL1 input one scan signal, sweep signal can be passed through sweep trace SL
1Begin to drive pixel U
11～U
M1, in addition, by the sub-scanning line ASL that electrically connects
1, sweep signal just can be passed through this sub-scanning line ASL
1And from sweep trace SL
1The second end B
1Enter, to drive pixel U
11～U
M1In other words, because sweep trace SL
1With sub-scanning line ASL
1The mode that is connected in parallel, sweep signal can be simultaneously from sweep trace SL
1The first end A
1With the second end B
1Enter and drive pixel U
11～U
M1Thus, sweep trace SL
1The sweep signal of two ends input will only need to be responsible for driven sweep line SL
1Go up the pixel of half, and sweep trace SL
1The pixel of last back segment is (promptly near sweep trace SL
1The second end B
1Pixel) can in time be switched on and receive data-signal, therefore need not adopt bilateral type of drive can reach its effect.
Fig. 5 illustrates and is the circuit diagram according to the flat-panel screens 500 of another embodiment of the present invention.Please refer to Fig. 5, flat-panel screens 500 comprises gate drivers 510, a M*N pixel (M, N are natural number) U
11～U
MN, N bar sweep trace SL
1～SL
N, N bar sub-scanning line ASL
1～ASL
NAnd M bar data line DL
1～DL
MWherein, pixel U
11～U
MNBe electrically connected to its corresponding scanning beam SL separately
1～SL
NWith data line DL
1～DL
MSweep trace SL
1～SL
NHas the first end A
1～A
NWith the second end B
1～
BN, wherein sub-scanning line ASL
1～ASL
NTwo ends be electrically connected to its corresponding scanning beam SL respectively
1～SL
NThe first end A
1～A
NWith the second end B
1～B
NThat is to say j bar sub-scanning line ASL
jAn end be electrically connected to j bar sweep trace SL
jThe first end A
j, its other end then is electrically connected to j bar sweep trace SL
jThe second end B
jGate drivers 510 comprises N drive end, is electrically connected to its corresponding scanning beam SL respectively
1～SL
NThe first end A
1～A
N
In the present embodiment, pixel U
11～U
MNComprise thin film transistor (TFT) T
11～T
MNWith pixel capacitance C
11～C
MN, its coupling mode is similar to the above embodiments, so do not repeating at this.In addition, j bar sub-scanning line (sweep trace ASL
j) an end be electrically connected to the 1st * j pixel (pixel U
1j) thin film transistor (TFT) T
1jGrid, its other end is electrically connected to the M * j pixel (pixel U
Mj) thin film transistor (TFT) T
MjGrid.
Please continue with reference to Fig. 5, when N drive end of gate drivers 510 exported the one scan signal respectively to its corresponding scanning beam SL
1～SL
N, sweep signal can be passed through sweep trace SL
1～SL
NBegin to drive pixel U
11～U
MN, and by separately with sweep trace SL
1～SL
NThe sub-scanning line ASL that is connected in parallel
1～ASL
N, make the sweep signal can be from sweep trace SL
1～SL
NSecond end B1～BN enter and drive pixel U
11～U
MNTherefore, similar to the above embodiments, the pixel that sweep signal is responsible for driving reduces to original half and sweep trace SL
1～SL
NThe pixel of last back segment can in time be switched on and receive data-signal, therefore need not adopt bilateral type of drive can reach its effect.
Fig. 6 A illustrates and is the sweep trace SL in Fig. 1 conventional liquid crystal 100
1Signal waveforms.Fig. 6 B illustrates and is the sweep trace SL in Fig. 5 flat-panel screens 500
1Signal waveforms.Comparison diagram 6A and Fig. 6 B can learn, the signal waveform of Fig. 6 B is more near ideal waveform, and this is meaning late effect that dead resistance on the sweep trace, electric capacity bring has significantly and improve.
In sum, spirit of the present invention is to be, sweep trace connects the sub-scanning line with parallel way, whereby sweep signal is inputed to simultaneously first end and second end of sweep trace, so the sweep signal of two ends input will only need to be responsible for driving the pixel of half, can improve the late effect of dead resistance on the sweep trace, electric capacity thus.In addition, the present invention adopts the mode of sweep trace sub-scanning line in parallel can reach the effect of existing bilateral type of drive, and can also solve the extra power consumption that existing bilateral type of drive derives and the problem of manufacturing cost.
Though the present invention discloses as above with preferred embodiment; right its is not in order to qualification the present invention, any those skilled in the art, without departing from the spirit and scope of the present invention; when can doing a little modification and perfect, so protection scope of the present invention is when with being as the criterion that claims were defined.
Claims (10)
1. active cell array is characterized in that comprising:
A plurality of pixels;
Multi-strip scanning line and many data lines, itself and those pixel electrically connects, and wherein each sweep trace comprises one first end and one second end, and first end of each sweep trace is in order to input one scan signal; And
Many sub-scanning lines, its corresponding respectively those sweep trace configurations, wherein first end of an end of each sub-scanning line and its corresponding scanning beam electrically connects, and second end of the other end of each sub-scanning line and its corresponding scanning beam electrically connects.
2. active cell array as claimed in claim 1 is characterized in that, the number of those pixels is M * N, and the number of those sweep traces is the N bar, and each sweep trace electrically connects M pixel, and wherein M, N are natural number.
3. active cell array as claimed in claim 2 is characterized in that, each pixel comprises:
One thin film transistor (TFT), it is electrically connected to its corresponding scanning beam and data line; And
One pixel capacitance, one end and this thin film transistor (TFT) electrically connect, and its other end is electrically connected to a common electric potential.
4. active cell array as claimed in claim 2 is characterized in that, the i * j pixel and i bar data line and j bar sweep trace electrically connect.
5. active cell array as claimed in claim 4 is characterized in that, an end of j bar sub-scanning line and the 1st * j pixel electrically connect, and the other end of j bar sub-scanning line and the M * j pixel electrically connect.
6. flat-panel screens is characterized in that comprising:
At least one gate drivers comprises a plurality of drive ends, respectively in order to output one scan signal;
A plurality of pixels;
Multi-strip scanning line and many data lines, itself and those pixel electrically connects, and wherein each sweep trace comprises one first end and one second end, and the drive end of first end of each sweep trace and this gate drivers electrically connects; And
Many sub-scanning lines, its corresponding respectively those sweep trace configurations, wherein first end of an end of each sub-scanning line and its corresponding scanning beam electrically connects, and second end of the other end of each sub-scanning line and its corresponding scanning beam electrically connects.
7. flat-panel screens as claimed in claim 6 is characterized in that, the number of those pixels is M * N, and the number of those sweep traces is the N bar, and each sweep trace electrically connects M pixel, and wherein M, N are natural number.
8. flat-panel screens as claimed in claim 7 is characterized in that, each pixel comprises:
One thin film transistor (TFT), it is electrically connected to its corresponding scanning beam and data line; And
One pixel capacitance, one end and this thin film transistor (TFT) electrically connect, and its other end electrically connects a common electric potential.
9. flat-panel screens as claimed in claim 7 is characterized in that, the i * j pixel and i bar data line and j bar sweep trace electrically connect.
10. flat-panel screens as claimed in claim 9 is characterized in that, an end of j bar sub-scanning line and the 1st * j pixel electrically connect, and the other end of j bar sub-scanning line and the M * j pixel electrically connect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101850198A CN101425272A (en) | 2007-10-31 | 2007-10-31 | Active element array for reducing scanning signal delay and planar display thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101850198A CN101425272A (en) | 2007-10-31 | 2007-10-31 | Active element array for reducing scanning signal delay and planar display thereof |
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| Publication Number | Publication Date |
|---|---|
| CN101425272A true CN101425272A (en) | 2009-05-06 |
Family
ID=40615847
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007101850198A Pending CN101425272A (en) | 2007-10-31 | 2007-10-31 | Active element array for reducing scanning signal delay and planar display thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102110685A (en) * | 2010-11-05 | 2011-06-29 | 友达光电股份有限公司 | Pixel structure and display panel |
| US20120105784A1 (en) * | 2010-10-29 | 2012-05-03 | Au Optronics Corporation | Pixel structure and display panel |
| CN103236241A (en) * | 2013-04-18 | 2013-08-07 | 京东方科技集团股份有限公司 | Display panel driving method, driving device and display device |
| CN107610646A (en) * | 2017-10-31 | 2018-01-19 | 云谷（固安）科技有限公司 | A kind of display screen, image element driving method and display device |
| CN111243476A (en) * | 2018-11-28 | 2020-06-05 | 中华映管股份有限公司 | Display device |
| CN112327551A (en) * | 2020-10-30 | 2021-02-05 | 厦门天马微电子有限公司 | Array substrate, display panel and display device |
-
2007
- 2007-10-31 CN CNA2007101850198A patent/CN101425272A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120105784A1 (en) * | 2010-10-29 | 2012-05-03 | Au Optronics Corporation | Pixel structure and display panel |
| TWI424238B (en) * | 2010-10-29 | 2014-01-21 | Au Optronics Corp | Pixel structure and display panel |
| CN102110685A (en) * | 2010-11-05 | 2011-06-29 | 友达光电股份有限公司 | Pixel structure and display panel |
| CN103236241A (en) * | 2013-04-18 | 2013-08-07 | 京东方科技集团股份有限公司 | Display panel driving method, driving device and display device |
| CN107610646A (en) * | 2017-10-31 | 2018-01-19 | 云谷（固安）科技有限公司 | A kind of display screen, image element driving method and display device |
| CN107610646B (en) * | 2017-10-31 | 2019-07-26 | 云谷（固安）科技有限公司 | A kind of display screen, image element driving method and display device |
| US10755629B2 (en) | 2017-10-31 | 2020-08-25 | Yungu (Gu'an) Technology Co., Ltd. | Display screen, pixel driving method and display device |
| CN111243476A (en) * | 2018-11-28 | 2020-06-05 | 中华映管股份有限公司 | Display device |
| CN112327551A (en) * | 2020-10-30 | 2021-02-05 | 厦门天马微电子有限公司 | Array substrate, display panel and display device |
| CN112327551B (en) * | 2020-10-30 | 2022-08-23 | 厦门天马微电子有限公司 | Array substrate, display panel and display device |
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Open date: 20090506 |