CN102109719B - Method for driving liquid crystal display device by four-line-based multi-line addressing technology - Google Patents
Method for driving liquid crystal display device by four-line-based multi-line addressing technology Download PDFInfo
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- CN102109719B CN102109719B CN2009102623951A CN200910262395A CN102109719B CN 102109719 B CN102109719 B CN 102109719B CN 2009102623951 A CN2009102623951 A CN 2009102623951A CN 200910262395 A CN200910262395 A CN 200910262395A CN 102109719 B CN102109719 B CN 102109719B
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Abstract
The invention discloses a method for driving a liquid crystal display device by a four-line-based multi-line addressing technology. The method comprises the following steps of: at first frame time, sending a unit of negative voltage, a unit of positive voltage and a unit of negative voltage to panel pixels in a row -m and a line n, panel pixels in a row -m+1 and a line n, and panel pixels in a row -m+2 and a line n of a liquid display panel unit of the liquid crystal display device by a row driving unit of the liquid crystal display device; analogously, at second frame time, sending a unit of positive voltage, a unit of negative voltage, and a unit of negative voltage; at third frame time, sending a unit of negative voltage, a unit of negative voltage and a unit of positive voltage; and at fourth frame time, sending a unit of positive voltage, a unit of positive voltage and a unit of positive voltage. The types of the voltages sent by a line driving unit of the liquid crystal display device to the panel pixels are four units of positive voltage, four units of negative voltage and zero voltage.
Description
Technical field
The invention relates to a kind of method of driving liquid crystal device, particularly a kind of method of the multi-line addressing technology driving liquid crystal device based on four lines.
Background technology
Multi-line addressing technology (Multi-Line Addressing abbreviates MLA usually as) is a kind of technology of driving liquid crystal device, and is wherein common based on the multi-line addressing technology of four lines again.Please refer to Fig. 1, it is the liquid crystal indicator calcspar based on the multi-line addressing technology driving of four lines.One liquid crystal indicator 10 comprises a LCD Controller unit 100, a multi-line addressing mathematical computations unit 200, delegation's driver element 300, a row driver element 400 and a display panels unit 500.This row driver element 300 comprises at least one column electrode 302; This row driver element comprises one first row electrode 402, a secondary series electrode 404, one the 3rd row electrode 406 and one the 4th row electrode 408; This display panels unit 500 comprises a plurality of panel element 500a～500n.
The signal that this LCD Controller unit 100 will be carried out; These multi-line addressing mathematical computations unit 200 computings of process earlier become to meet after the form of multi-line addressing output; Deliver to this row driver element 300 and this row driver element 400 again, drive those panel elements 500a～500n of this display panels unit 500 again with this column electrode 302, this first row electrode 402, this secondary series electrode 404, the 3rd row electrode 406 and the 4th row electrode 408.
Generally when discussing, all can represent with the form of matrix with multi-line addressing technology driving liquid crystal device.Please refer to Fig. 2, it is known row driver element output voltage matrix table diagrammatic sketch.For instance; In one first subframe time, this first row electrode 402, this secondary series electrode 404, the 3rd row electrode 406 and the 4th row electrode 408 respectively to this m be listed as that n is capable, this m+1 is listed as that n is capable, this m+2 is listed as capable and this m+3 of n and is listed as positive voltage, the positive voltage of a unit, the negative voltage of a unit and the positive voltage of a unit that capable those panel elements 500a～500n of n exports a unit.By that analogy, can clearly by the form of matrix learn that output voltage is big or small.
Please refer to Fig. 3, it is known display panels display matrix presentation graphs.Fig. 3 representative is in the middle of those panel elements 500a～500n; This m is listed as n capable (being shown as-1), this m+1 and is listed as n capable (being shown as 1), this m+2 and is listed as those panel elements 500a～500n that n capable (being shown as 1) and this m+3 be listed as n capable (being shown as-1) (abovely open for-1 representative, 1 represents and closes in order to open, close, close and to open; Can certainly open with 1 representative ,-1 representative is closed, and then this moment is for closing, open, open and closing).The unlatching of those panel elements 500a～500n or close, the signal deciding that will carry out by this LCD Controller unit 100 is seen off is just determined by the user.In other words, Fig. 3 is the matrix table diagrammatic sketch that this display panels unit 500 will manifest state at last.
During at present based on the multi-line addressing technology driving liquid crystal device of four lines, all use matrix as shown in Figure 2 mostly at the output voltage matrix of this row driver element 400.Moreover, in conjunction with display panels display matrix shown in Figure 3, do matrix operation mutually, can calculate the voltage matrix of these column electrode 302 required outputs of this row driver element 300.That is to say; One of work of this multi-line addressing mathematical computations unit 200 is promptly being done matrix operation mutually to these row driver element 400 output voltage matrixes and this display panels unit 500 display matrixes, with the voltage matrix of these column electrode 302 required outputs of calculating this row driver element 300.
Please refer to Fig. 4, it is the synoptic diagram after Fig. 2 and Fig. 3 do matrix operation.Can obtain the voltage matrix of these column electrode 302 required outputs after the matrix operation.In the example of Fig. 4, the matrix operation result show this column electrode 302 this first subframe time to this m be listed as that n is capable, this m+1 is listed as that n is capable, this m+2 is listed as capable and this m+3 of n and is listed as the negative voltage that capable those panel elements 500a～500n of n exports two units; In other words, this column electrode 302 is exported the negative voltage of two units in this first subframe time.In like manner, this column electrode 302 is exported the positive voltage of two units, the negative voltage of two units and the positive voltage of two units respectively in this second subframe time, the 3rd subframe time and the 4th subframe time.
In sum; Can know the method for at present known multi-line addressing technology driving liquid crystal device based on four lines; These row driver element 400 output voltage matrixes with Fig. 2; Cooperate this display panels unit 500 of Fig. 3 for example will manifest the matrix of state at last, do the computing of matrix, with the anti-voltage matrix figure that will export that extrapolates like 302 of this column electrodes of Fig. 4.Yet Fig. 3 and Fig. 4 are merely one of them embodiment, in fact based on the multi-line addressing technology of four lines have 16 kinds of embodiment (because each those panel elements 500a～500n have 1 with-1 two kind of selection, equal 16 kinds so four lines are two biquadratic).These 16 kinds of embodiment such as Fig. 5 and shown in Figure 6.
Can learn that from the matrix operation result of Fig. 5 and Fig. 6 this column electrode 302 also only need be exported the positive voltage of two units or the negative voltage of two units not as Fig. 4.In fact, known output voltage kind based on this technological column electrode 302 of the multi-line addressing of four lines comprises: the positive voltage of the positive voltage of no-voltage, two units, the negative voltage of two units, four units and the negative voltage of four units, five kinds of voltage kinds altogether.
Because in the known multi-line addressing technology based on four lines; The output voltage kind one of this column electrode 302 has more than five kinds of voltage kinds; So the known common shortcoming of multi-line addressing technology based on four lines is that circuit is comparatively complicated, and direct current is comparatively obvious to the unbalanced situation of direct current.
Summary of the invention
For improving the shortcoming of above-mentioned known technology, the object of the present invention is to provide a kind of based on method based on the multi-line addressing of four lines technology driving liquid crystal device.
For reaching above-mentioned purpose of the present invention, of the present inventionly be applied to a liquid crystal indicator based on method based on the multi-line addressing technology driving liquid crystal device of four lines; This liquid crystal indicator comprises delegation's driver element, a row driver element and a display panels unit; This row driver element comprises at least one column electrode; This row driver element comprises one first row electrode, a secondary series electrode, one the 3rd row electrode and one the 4th row electrode; This display panels unit comprises a plurality of panel elements; One preset panel subunit comprises that a m is listed as that n is capable, a m+1 is listed as the capable and m+2 of n and is listed as those capable panel elements of n.Should comprise based on method based on the multi-line addressing of four lines technology driving liquid crystal device: in one first subframe time, this first row electrode, this secondary series electrode and the 3rd row electrode respectively to this m be listed as that n is capable, this m+1 is listed as capable and this m+2 of n and is listed as those capable panel elements of n and exports the negative voltage of a unit, the positive voltage of a unit and the negative voltage of a unit; In one second subframe time, this first row electrode, this secondary series electrode and the 3rd row electrode respectively to this m be listed as that n is capable, this m+1 is listed as capable and this m+2 of n and is listed as those capable panel elements of n and exports the positive voltage of a unit, the negative voltage of a unit and the negative voltage of a unit; In one the 3rd subframe time, this first row electrode, this secondary series electrode and the 3rd row electrode respectively to this m be listed as that n is capable, this m+1 is listed as capable and this m+2 of n and is listed as those capable panel elements of n and exports the negative voltage of a unit, the negative voltage of a unit and the positive voltage of a unit; And in one the 4th subframe time, this first row electrode, this secondary series electrode and the 3rd row electrode respectively to this m be listed as that n is capable, this m+1 is listed as capable and this m+2 of n and is listed as those capable panel elements of n and exports the positive voltage of a unit, the positive voltage of a unit and the positive voltage of a unit.
Description of drawings
Fig. 1 is the liquid crystal indicator calcspar that drives based on the multi-line addressing technology based on four lines.
Fig. 2 is known row driver element output voltage matrix table diagrammatic sketch.
Fig. 3 is known display panels display matrix presentation graphs.
Fig. 4 is the synoptic diagram after Fig. 2 and Fig. 3 do matrix operation.
Fig. 5 and Fig. 6 are the matrix operation embodiment based on the multi-line addressing technology of four lines.
Fig. 7 is the output voltage matrix table diagrammatic sketch of row driver element of the present invention.
Fig. 8 is matrix operation of the present invention and form synoptic diagram.
Fig. 9 is of the present invention based on the technological row driver element output voltage matrix process flow diagram of the multi-line addressing of four lines.
Description of reference numerals
10 liquid crystal indicators
100 LCD Controller unit
200 multi-line addressing mathematical computations unit
300 row driver elements
400 row driver elements
500 display panels unit
302 column electrodes
402 first row electrodes
404 secondary series electrodes
406 the 3rd row electrodes
408 the 4th row electrodes
502 preset panel subunit
500a～500n panel element
Embodiment
The method of the multi-line addressing technology driving liquid crystal device based on four lines of the present invention is applied to the liquid crystal indicator that drives based on the multi-line addressing technology of four lines like Fig. 1.The present invention improves the output voltage matrix of this known row driver element 400 as shown in Figure 2; And the output voltage matrix of this row driver element 400 of the present invention is as shown in Figure 7.Moreover, known multi-line addressing technology single treatment four lines based on four lines, and single treatment of the present invention is three-way.
Please refer to Fig. 8, it is matrix operation of the present invention and form synoptic diagram.The left side four of the first half of Fig. 8 takes advantage of four matrixes to be the output voltage matrix of this row driver element 400 of the present invention shown in Figure 7; Four take advantage of one matrix to be the matrix that this display panels unit 500 will manifest state at last in the middle of Fig. 8 first half; Both do matrix operation mutually and can obtain taking advantage of one matrix, the voltage matrix of these column electrode 302 required outputs promptly of the present invention like Fig. 8 first half the right four.
Fig. 8 first half is merely one embodiment of the invention, and in fact the present invention one has eight kinds of embodiment, and tabular is shown in Fig. 8 Lower Half.Wherein the embodiment of Fig. 8 first half is at the 5th row of Fig. 8 Lower Half.Because single treatment of the present invention is three-way, but, will produce a dummy unit (Dummy) for meeting the matrix operation rule.For instance, four to take advantage of one matrix (this display panels unit 500 will manifest the matrix of state at last) be 1 ,-1 ,-1 and 1 in regular turn in the middle of Fig. 8 first half; But the present invention only handles the front three 1 ,-1 and-1, and last 1 is referred to as dummy unit (Dummy), is merely to meet matrix operation and exist.
In sum, the present invention adopts the output voltage matrix like this row driver element 400 of Fig. 7; And single treatment is three-way, and can be learnt that by Fig. 8 this column electrode 302 of the present invention will only have the positive voltage of no-voltage, four units and the negative voltage of four units, and totally three kinds of voltages are selected.Therefore the circuit that improves known this column electrode 302 that five kinds of voltages outputs are arranged greatly and cause is comparatively complicated, and direct current is to the unbalanced situation of direct current significant disadvantages comparatively.
Below will make details with regard to the method for the multi-line addressing technology driving liquid crystal device based on four lines of the present invention.Please refer to Fig. 9, it is of the present invention based on the technological row driver element output voltage matrix process flow diagram of the multi-line addressing of four lines.And please refer to Fig. 1, a preset panel subunit 502 comprises that this m is listed as that n is capable, this m+1 is listed as capable and this m+2 of n and is listed as capable those panel elements 500a～500n of n.
Step S10, in this first subframe time, this first row electrode 402, this secondary series electrode 404 and the 3rd row electrode 406 respectively to this m be listed as that n is capable, this m+1 is listed as capable and this m+2 of n and is listed as capable those panel elements 500a～500n of n and exports the negative voltage of a unit, the positive voltage of a unit and the negative voltage of a unit.
Step S20, in this second subframe time, this first row electrode 402, this secondary series electrode 404 and the 3rd row electrode 406 respectively to this m be listed as that n is capable, this m+1 is listed as capable and this m+2 of n and is listed as capable those panel elements 500a～500n of n and exports the positive voltage of a unit, the negative voltage of a unit and the negative voltage of a unit.
Step S30, in the 3rd subframe time, this first row electrode 402, this secondary series electrode 404 and the 3rd row electrode 406 respectively to this m be listed as that n is capable, this m+1 is listed as capable and this m+2 of n and is listed as capable those panel elements 500a～500n of n and exports the negative voltage of a unit, the negative voltage of a unit and the positive voltage of a unit.
Step S40, in the 4th subframe time, this first row electrode 402, this secondary series electrode 404 and the 3rd row electrode 406 respectively to this m be listed as that n is capable, this m+1 is listed as capable and this m+2 of n and is listed as capable those panel elements 500a～500n of n and exports the positive voltage of a unit, the positive voltage of a unit and the positive voltage of a unit.
Then, below explain orally please in the lump form with reference to figure 8 Lower Halves.
In this first subframe time, this second subframe time, the 3rd subframe time and the 4th subframe time, 302 pairs of this column electrodes should be preset the positive voltage that panel subunit 502 is exported no-voltage, no-voltage, no-voltage and four units respectively; This m is listed as that n is capable, this m+1 is listed as capable and this m+2 of n and is listed as capable those panel elements 500a～500n of n and will be shown as 1 (closing), 1 (closing) and 1 (closing).
In this first subframe time, this second subframe time, the 3rd subframe time and the 4th subframe time, 302 pairs of this column electrodes should be preset negative voltage and the no-voltage that panel subunit 502 is exported no-voltage, no-voltage, four units respectively; This m is listed as that n is capable, this m+1 is listed as capable and this m+2 of n and is listed as capable those panel elements 500a～500n of n and will be shown as 1 (closing), 1 (closing) and-1 (unlatching).
In this first subframe time, this second subframe time, the 3rd subframe time and the 4th subframe time, 302 pairs of this column electrodes should be preset negative voltage, no-voltage, no-voltage and the no-voltage that panel subunit 502 is exported four units respectively; This m is listed as that n is capable, this m+1 is listed as capable and this m+2 of n and is listed as capable those panel elements 500a～500n of n and will be shown as 1 (closing) ,-1 (unlatching) and 1 (closing).
In this first subframe time, this second subframe time, the 3rd subframe time and the 4th subframe time, 302 pairs of this column electrodes should be preset negative voltage, no-voltage and the no-voltage that panel subunit 502 is exported no-voltage, four units respectively; This m is listed as that n is capable, this m+1 is listed as capable and this m+2 of n and is listed as capable those panel elements 500a～500n of n and will be shown as-1 (unlatching), 1 (closing) and 1 (closing).
In this first subframe time, this second subframe time, the 3rd subframe time and the 4th subframe time, 302 pairs of this column electrodes should be preset positive voltage, no-voltage and the no-voltage that panel subunit 502 is exported no-voltage, four units respectively; This m is listed as that n is capable, this m+1 is listed as capable and this m+2 of n and is listed as capable those panel elements 500a～500n of n and will be shown as 1 (closing) ,-1 (unlatching) and-1 (unlatching).
In this first subframe time, this second subframe time, the 3rd subframe time and the 4th subframe time, 302 pairs of this column electrodes should be preset positive voltage, no-voltage, no-voltage and the no-voltage that panel subunit 502 is exported four units respectively; This m is listed as that n is capable, this m+1 is listed as capable and this m+2 of n and is listed as capable those panel elements 500a～500n of n and will be shown as-1 (unlatching), 1 (closing) and-1 (unlatching).
In this first subframe time, this second subframe time, the 3rd subframe time and the 4th subframe time, 302 pairs of this column electrodes should be preset positive voltage and the no-voltage that panel subunit 502 is exported no-voltage, no-voltage, four units respectively; This m is listed as that n is capable, this m+1 is listed as capable and this m+2 of n and is listed as capable those panel elements 500a～500n of n and will be shown as-1 (unlatching) ,-1 (unlatching) and 1 (closing).
In this first subframe time, this second subframe time, the 3rd subframe time and the 4th subframe time, 302 pairs of this column electrodes should be preset the negative voltage that panel subunit 502 is exported no-voltage, no-voltage, no-voltage and four units respectively; This m is listed as that n is capable, this m+1 is listed as capable and this m+2 of n and is listed as capable those panel elements 500a～500n of n and will be shown as-1 (unlatching) ,-1 (unlatching) and-1 (unlatching).
But the method based on the multi-line addressing technology driving liquid crystal device of four lines by the invention of above explanation knowledge capital with known technology different features and advantage is:
1. the output voltage matrix of this row driver element 400 is as shown in Figure 7.
2. single treatment is three-way.
Therefore 3. this column electrode 302 only has three kinds of voltage kinds, improves greatly that known this column electrode 302 has five kinds of voltages outputs and the circuit that causes is comparatively complicated, and direct current is to the unbalanced situation of direct current significant disadvantages comparatively.
In sum, when knowledge capital invention has had industry applications, novelty and creativeness, structure of the present invention again be not shown in like product and public use yet, met the application for a patent for invention important document fully, filed an application according to Patent Law.
Certainly; The present invention also can have other various embodiments; Under the situation that does not deviate from spirit of the present invention and essence thereof; Being familiar with those of ordinary skill in the art ought can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection domain of the appended claim of the present invention.
Claims (1)
1. method based on the multi-line addressing of four lines technology driving liquid crystal device; Be applied to a liquid crystal indicator; This liquid crystal indicator comprises delegation's driver element, a row driver element and a display panels unit; This row driver element comprises at least one column electrode, and this row driver element comprises one first row electrode, a secondary series electrode, one the 3rd row electrode and one the 4th row electrode, and this display panels unit comprises a plurality of panel elements; One preset panel subunit comprises that a m is listed as that n is capable, a m+1 is listed as the capable and m+2 of n and is listed as those capable panel elements of n, and this method comprises:
Step a. is in one first subframe time, this first row electrode, this secondary series electrode and the 3rd row electrode respectively to this m be listed as that n is capable, this m+1 is listed as capable and this m+2 of n and is listed as those capable panel elements of n and exports the negative voltage of a unit, the positive voltage of a unit and the negative voltage of a unit;
Step b. is in one second subframe time, this first row electrode, this secondary series electrode and the 3rd row electrode respectively to this m be listed as that n is capable, this m+1 is listed as capable and this m+2 of n and is listed as those capable panel elements of n and exports the positive voltage of a unit, the negative voltage of a unit and the negative voltage of a unit;
Step c is in one the 3rd subframe time, this first row electrode, this secondary series electrode and the 3rd row electrode respectively to this m be listed as that n is capable, this m+1 is listed as capable and this m+2 of n and is listed as those capable panel elements of n and exports the negative voltage of a unit, the negative voltage of a unit and the positive voltage of a unit;
Steps d. in one the 4th subframe time, this first row electrode, this secondary series electrode and the 3rd row electrode respectively to this m be listed as that n is capable, this m+1 is listed as capable and this m+2 of n and is listed as those capable panel elements of n and exports the positive voltage of a unit, the positive voltage of a unit and the positive voltage of a unit; And step e. is in this first subframe time, this second subframe time, the 3rd subframe time and the 4th subframe time; This column electrode is exported the positive voltage of no-voltage, no-voltage, no-voltage and four units respectively to this preset panel subunit; Or export the negative voltage and the no-voltage of no-voltage, no-voltage, four units respectively; Or export negative voltage, no-voltage, no-voltage and the no-voltage of four units respectively; Or export negative voltage, no-voltage and the no-voltage of no-voltage, four units respectively, or export positive voltage, no-voltage and the no-voltage of no-voltage, four units respectively, or export positive voltage, no-voltage, no-voltage and the no-voltage of four units respectively; Or export the positive voltage and the no-voltage of no-voltage, no-voltage, four units respectively, or export the negative voltage of no-voltage, no-voltage, no-voltage and four units respectively.
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| JP3096836B2 (en) * | 1994-03-03 | 2000-10-10 | セイコーインスツルメンツ株式会社 | Display device |
| CN1457032A (en) * | 2002-05-08 | 2003-11-19 | 中颖电子(上海)有限公司 | Multiwire addressing driving mode of display device |
| CN101197113A (en) * | 2006-12-08 | 2008-06-11 | 晶宏半导体股份有限公司 | Excess driving method of LCD |
| CN101366069A (en) * | 2005-12-30 | 2009-02-11 | X-莫提夫有限公司 | Method for triggering matrix displays |
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2009
- 2009-12-24 CN CN2009102623951A patent/CN102109719B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3096836B2 (en) * | 1994-03-03 | 2000-10-10 | セイコーインスツルメンツ株式会社 | Display device |
| CN1457032A (en) * | 2002-05-08 | 2003-11-19 | 中颖电子(上海)有限公司 | Multiwire addressing driving mode of display device |
| CN101366069A (en) * | 2005-12-30 | 2009-02-11 | X-莫提夫有限公司 | Method for triggering matrix displays |
| CN101197113A (en) * | 2006-12-08 | 2008-06-11 | 晶宏半导体股份有限公司 | Excess driving method of LCD |
Non-Patent Citations (1)
| Title |
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| JP特许第3096836号B2 2000.10.10 |
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