CN103123423B - Display panels and image element driving method thereof - Google Patents
Display panels and image element driving method thereof Download PDFInfo
- Publication number
- CN103123423B CN103123423B CN201110368975.6A CN201110368975A CN103123423B CN 103123423 B CN103123423 B CN 103123423B CN 201110368975 A CN201110368975 A CN 201110368975A CN 103123423 B CN103123423 B CN 103123423B
- Authority
- CN
- China
- Prior art keywords
- liquid crystal
- voltage
- pixel
- kinds
- display panels
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Liquid Crystal (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
A kind of display panels and image element driving method thereof.This display panels comprises a substrate, a subtend substrate and a liquid crystal layer.Substrate has a common electrode.Subtend substrate is configured at the subtend of substrate, and has the pixel that multiple pixel electrode corresponds to display panels.Liquid crystal layer is configured between substrate and subtend substrate, and has multiple liquid crystal molecule.When liquid crystal molecule transition, pixel electrode is bestowed the voltage of two kinds of varying levels, and common electrode is bestowed the common voltage of a particular level.The common voltage of particular level is between the voltage of two kinds of varying levels.In addition, a kind of image element driving method being suitable for above-mentioned display panels is also suggested.
Description
Technical field
The present invention relates to a kind of display panel and image element driving method thereof, and in particular to a kind of display panels and image element driving method thereof.
Background technology
Generally speaking, the substrate that display panels is configured by two subtends is jointly seized layer of liquid crystal molecule on both sides by the arms and formed.This liquid crystal molecule has the characteristic of double refractive inde (Birefringence), under different electric fields, has different arrangement modes.Therefore, namely liquid crystal display is by an additional shared electric field, the liquid crystal molecule in display panels is turned to, and then changes the arrangement of liquid crystal molecule, makes each pixel on display panels have different transmittances, to reach the object of video picture.
When extra electric field is closed, long axis of liquid crystal molecule is got back to by rotation status when having electric field and is called slack time (relaxationtime) without the time required for virgin state during electric field.With regard to nematic (nematic) liquid crystal molecule, its slack time for long, there is no additional any electric field to promote it get back to original state when its reason is that liquid crystal molecule is naturally lax far beyond Data writing time (addressingtime).This effect can produce far-reaching influence to field color sequential liquid crystal display (fieldsequentialcolorLCD).Such as, the picture update rate (framerate) of this effect meeting limiting field color sequential liquid crystal display, and cause look segregation phenomenon (colorbreakup).
Therefore, provide the slack time that can shorten liquid crystal molecule, and the image element driving method promoting its reaction velocity there is its necessity.
Summary of the invention
The invention provides a kind of image element driving method, it effectively can shorten the slack time of liquid crystal molecule, and promotes the reaction velocity of display panels.
The invention provides a kind of display panels, it utilizes above-mentioned image element driving method, effectively can shorten the slack time of liquid crystal molecule, and promote its reaction velocity.
The present invention proposes a kind of display panels, and it has multiple with the pixel of array way arrangement, and comprises a substrate, a subtend substrate and a liquid crystal layer.Substrate has common electrode.Subtend substrate is configured at substrate subtend, and has multiple pixel electrode corresponding to pixel.Liquid crystal layer is configured between substrate and subtend substrate, and has multiple liquid crystal molecule.When liquid crystal molecule transition, pixel electrode is imparted to the voltage of few two kinds of varying levels, common electrode is bestowed the common voltage of particular level (commonvoltage), and the common voltage of particular level is between the voltage of two kinds of varying levels of pixel electrode.
In one embodiment of this invention, when liquid crystal molecule transition, the pixel electrode with one-row pixels is bestowed the voltage of same level.
In one embodiment of this invention, when liquid crystal molecule transition, the pixel electrode of one of them row of pixel electrode of adjacent rows pixel is imparted to one of them of few two kinds of varying level voltages; The pixel electrode of another row is wherein imparted to wherein another of few two kinds of varying level voltages.
The present invention proposes a kind of image element driving method, in order to drive above-mentioned display panels.Image element driving method comprises the following steps:, when multiple liquid crystal molecule transition of liquid crystal layer, multiple pixel electrodes of subtend substrate to be bestowed the voltage of at least two kinds of varying levels; And when liquid crystal molecule transition, bestow the common voltage (commonvoltage) of particular level at the common electrode of substrate.Wherein, the common voltage of particular level is between the voltage of two kinds of varying levels of pixel electrode.
In one embodiment of this invention, the above-mentioned voltage bestowing at least two kinds of varying levels comprises in the step of pixel electrode: when liquid crystal molecule transition, bestows the voltage of same level in the pixel electrode of same one-row pixels.
In one embodiment of this invention, the above-mentioned common voltage bestowing particular level comprises in the step of common electrode: when liquid crystal molecule transition, and one of them bestowing at least two kinds of varying level voltages is in the pixel electrode of one of them row of pixel electrode of adjacent rows pixel; And wherein another bestowing at least two kinds of varying level voltages is in the pixel electrode of another row wherein.
In one embodiment of this invention, the voltage of common voltage system at least two kinds of varying levels of above-mentioned particular level and the half of absolute value.
In one embodiment of this invention, the cell gap of above-mentioned liquid crystal layer is d, and the Pixel Dimensions of pixel electrode is p, and wherein d, p meet p < 4d.
In one embodiment of this invention, the voltage of at least two kinds of above-mentioned varying levels bestows the time length of pixel electrode, and the time length that the common voltage of particular level bestows common electrode is decided by following at least one of them factor: the voltage of at least two kinds of varying levels, the common voltage of particular level, the cell gap of liquid crystal layer and the Pixel Dimensions of pixel electrode.
Based on above-mentioned, in exemplary embodiment of the present invention, image element driving method bestows the voltage of varying level to the pixel electrode of display panels when liquid crystal molecule transition, make to produce a marginal electric field between neighbor, and then promotes the reaction velocity of display panels.
For above-mentioned feature and advantage of the present invention can be become apparent, special embodiment below, and coordinate accompanying drawing to be described in detail below.
Accompanying drawing explanation
Fig. 1 illustrates the upper schematic diagram of the display panels of one embodiment of the invention.
Fig. 2 illustrates the diagrammatic cross-section of the display panels of one embodiment of the invention.
Fig. 3 illustrates the time dependent schematic diagram of light transmittance of the liquid crystal molecule of one embodiment of the invention.
Fig. 4 illustrates the diagrammatic cross-section of the display panels of Fig. 2 embodiment, and its pixel electrode and common voltage are bestowed specific voltage.
Fig. 5 illustrates the flow chart of steps of the image element driving method of one embodiment of the invention.
[main element symbol description]
100: display panels
110: substrate
112: common electrode
120: subtend substrate
122,122_i-1,122_i, 122_i+1: pixel electrode
130: liquid crystal layer
D: the cell gap of liquid crystal layer is
P: the Pixel Dimensions of pixel electrode
P: pixel
P_0, P_1, P_i-1, P_i, P_i+1, P_N-1, P_N: pixel column
LC: liquid crystal molecule
S500, S510: the step of image element driving method
Vcom, Vcom ': common voltage
Vp, Vp1, Vp2: pixel voltage
Tr: during transition
Tw, tb: period
E: marginal electric field
Embodiment
In exemplary embodiment of the present invention, image element driving method resets liquid crystal molecule rapidly in the time interval lower than millisecond (sub-milliseconds), it utilizes the marginal electric field produced between neighbor to accelerate the relaxation of liquid crystal molecule, to promote the reaction velocity of display panels.Accordingly, the picture update rate (framerate) of liquid crystal display can be promoted, and then improves look segregation phenomenon (colorbreakup).But it should be noted that the present invention is not limited to apply color sequential liquid crystal display on the scene.
Fig. 1 illustrates the upper schematic diagram of the display panels of one embodiment of the invention.Fig. 2 illustrates the diagrammatic cross-section of the display panels of one embodiment of the invention.Please refer to Fig. 1 and Fig. 2, the display panels 100 of the present embodiment has multiple pixel P, arranges in an array mode.Display panels 100 comprises substrate 110, subtend substrate 120 and a liquid crystal layer 130.Substrate 110 has at least one common electrode 112 and configures thereon.Subtend substrate 120 is configured at the subtend of substrate 110, and has multiple pixel electrode 122 corresponding to pixel P.The Pixel Dimensions of each pixel electrode is p.Liquid crystal layer 130 is configured at substrate 110 and subtend substrate 120, and has multiple liquid crystal molecule LC.The cell gap of liquid crystal layer is d.
Fig. 3 illustrates the time dependent schematic diagram of light transmittance of the liquid crystal molecule of one embodiment of the invention.Please refer to Fig. 1 to Fig. 3, in the present embodiment, display panels 100 is such as the display panels of a twisted nematic mode (twistednematicmode, TNmode), and it operates in normal white mode (normallywhitemode) usually.Therefore, during tb, when common electrode 112 and pixel electrode 122 are bestowed the pixel voltage Vp of common voltage Vcom and correspondence respectively, liquid crystal molecule LC can be reversed, and the long axis direction of partial liquid crystal molecule L C in fact can perpendicular to substrate 110 and subtend substrate 120.Now, light source cannot pass through liquid crystal molecule LC, and its light transmittance (transmission) levels off to 0%.
Then, during tw, when the pixel voltage Vp of correspondence is removed by pixel electrode 122, namely represent that liquid crystal molecule LC gets back to without virgin state during electric field by rotation status when having electric field, its slack time, the reaction time impact on display panels 100 was very remarkable.Therefore, relax to accelerate liquid crystal molecule LC, promote its reaction time, in the present embodiment, when liquid crystal molecule LC transition (such as during tr), the pixel electrode 122 of adjacent rows is bestowed voltage Vp1 and Vp2 of two kinds of varying levels respectively.Common electrode 112 is bestowed the common voltage Vcom ' of particular level, and its level is between voltage Vp1 and Vp2.
Specifically, Fig. 4 illustrates the diagrammatic cross-section of the display panels of Fig. 2 embodiment, and its pixel electrode and common voltage are bestowed specific voltage.Please refer to Fig. 4, for pixel column P_i-1, P_i and P_i+1, at liquid crystal molecule LC transition period tr, the pixel electrode system with one-row pixels is bestowed the voltage of same level.Such as, the pixel electrode 122_i-1 of pixel column P_i-1 and the pixel electrode 122_i+1 of pixel column P_i+1 is bestowed the voltage Vp1 of same level; And the pixel electrode 122_i of pixel column P_i is bestowed the voltage Vp2 of same level.That is, at liquid crystal molecule LC transition period tr, the pixel electrode 122_i of one of them row of pixel electrode 122_i and 122_i+1 of adjacent rows pixel is bestowed one of them of two kinds of varying level voltage Vp1 and Vp2; The pixel electrode 122_i+1 of another row is wherein bestowed wherein another of two kinds of varying level voltage Vp1 and Vp2.
Now, because the pixel electrode of adjacent rows has voltage difference | Vp1-Vp2|, its can set up in liquid crystal layer 130 arrow as Fig. 4 the marginal electric field E that indicates, its cross stream component can accelerate the lax of liquid crystal molecule LC, make it comparatively return to virgin state without additional any electric field, and then effectively promote the reaction time.In the present embodiment, the level of voltage Vp1 is greater than voltage Vp2, to produce marginal electric field E.In practice application, voltage Vp1 is such as 5 volts (V), and voltage Vp2 is such as 0V, but the present invention is not limited to this.
On the other hand, in the present embodiment, voltage Vp1 and Vp2 bestow Pixel Dimensions p that pixel electrode 122 and common voltage Vcom ' bestow the level of time length tr by voltage Vp1 and Vp2 of common electrode 110, the level of common voltage Vcom ', the cell gap d of liquid crystal layer and pixel electrode at least one of them factor decide.At this, the time length of tr is such as about 0.5 millisecond, that is the display panels 100 of the present embodiment is in the time interval lower than millisecond (sub-milliseconds), and its liquid crystal molecule is reset rapidly.In addition, in the present embodiment, Pixel Dimensions p that is excessive or too small due to common voltage Vcom ' and pixel electrode crosses the decay that big city causes marginal electric field E, and causes the less effective accelerating liquid crystal molecule rotation.Therefore, in the present embodiment, the common voltage Vcom ' be applied on common electrode 110 be set as voltage Vp1's and Vp2 and the half of absolute value, that is Vcom '=| Vp1+Vp2|/2.Further, the Pixel Dimensions p of pixel electrode is less than four times of the cell gap d of liquid crystal layer, and namely d, p meet the condition of p < 4d.In the case, can guarantee that marginal electric field E effectively can accelerate liquid crystal molecule LC transition, and then promote the reaction velocity of display panels 100.
Fig. 5 illustrates the flow chart of steps of the image element driving method of one embodiment of the invention.Please refer to Fig. 4 and Fig. 5, the image element driving method of the present embodiment is such as suitable for the display panels 100 driving Fig. 4, and it comprises the following steps.In step S500, when liquid crystal molecule LC transition, bestow voltage Vp1 and Vp2 of at least two kinds of varying levels at multiple pixel electrodes 122 of subtend substrate 120.Then, in step S510, when liquid crystal molecule LC transition, the common voltage Vcom ' of particular level is bestowed at the common electrode 112 of substrate 110.Wherein, the level of common voltage Vcom ' is between voltage Vp1 and Vp2 of pixel electrode.
It should be noted, though the present embodiment describes the image element driving method of the present embodiment with two steps, for reaching the object producing marginal electric field E, on Practical Operation, step S500 and S510 can carry out simultaneously, and both do not have a precedence relationship.That is when liquid crystal molecule transition, voltage Vp1 and Vp2 and common voltage Vcom ' bestows pixel electrode 122 and common electrode 112 respectively simultaneously.
In addition, the image element driving method of embodiments of the invention can obtain enough teachings, suggestion and implementation by the describing of Fig. 1 to Fig. 4 embodiment, and therefore repeats no more.
In sum, in exemplary embodiment of the present invention, image element driving method bestows the voltage of varying level on adjacent pixel electrode, and has identical voltage level with a line pixel electrode.Therefore make row in liquid crystal layer, produce marginal electric field with adjacent pixel electrode in the ranks, it can shorten the slack time of liquid crystal molecule, and then can effectively accelerate liquid crystal reaction velocity, promotes the display quality of display panels.
Although the present invention with embodiment openly as above; so itself and be not used to limit the present invention; without departing from the spirit and scope of the present invention, when doing a little change and retouching, therefore protection scope of the present invention is when being as the criterion depending on the appended claims person of defining for those skilled in the art.
Claims (12)
1. a display panels, has multiple pixel, arranges in an array mode, and this display panels comprises:
One first substrate, has a common electrode;
One second substrate, is configured at this first substrate subtend, has multiple pixel electrode and corresponds to these pixels; And
One liquid crystal layer, is configured between this first substrate and this second substrate, has multiple liquid crystal molecule,
Wherein when these liquid crystal molecule transitions, these pixel electrodes are imparted to the voltage of few two kinds of varying levels, and this common electrode is bestowed the common voltage of a particular level, and the common voltage of this particular level is between the voltage of these at least two kinds of varying levels;
Wherein liquid crystal molecule transition is that liquid crystal molecule is got back to without virgin state during electric field by rotation status when having electric field.
2. display panels as claimed in claim 1, wherein when these liquid crystal molecule transitions, these pixel electrodes with one-row pixels are bestowed the voltage of same level.
3. display panels as claimed in claim 2, wherein when these liquid crystal molecule transitions, the pixel electrode of these one of them row of pixel electrode of adjacent rows pixel is bestowed one of them of this at least two kinds of varying level voltages; The pixel electrode of another row is wherein bestowed wherein another of these at least two kinds of varying level voltages.
4. display panels as claimed in claim 3, wherein the common voltage of this particular level be the voltage of these at least two kinds of varying levels and the half of absolute value.
5. display panels as claimed in claim 1, wherein the cell gap of this liquid crystal layer is d, and the Pixel Dimensions of these pixel electrodes is p, and wherein d, p meet p<4d.
6. display panels as claimed in claim 1, wherein the voltage of these at least two kinds of varying levels bestows the time length of these pixel electrodes, and the time length that the common voltage of this particular level bestows this common electrode is decided by following at least one of them factor: the voltage of these at least two kinds of varying levels, the common voltage of this particular level, the cell gap of this liquid crystal layer and the Pixel Dimensions of these pixel electrodes.
7. an image element driving method, in order to drive a display panels, this display panels has multiple pixel, arranges in an array mode, and this display panels comprises a first substrate, a second substrate and a liquid crystal layer, and this image element driving method comprises:
When multiple liquid crystal molecule transition of this liquid crystal layer, bestow the multiple pixel electrodes of voltage in this second substrate of at least two kinds of varying levels; And
When these liquid crystal molecule transitions, bestow the common electrode of common voltage in this first substrate of a particular level,
Wherein the common voltage of this particular level is between the voltage of these at least two kinds of varying levels;
Wherein liquid crystal molecule transition is that liquid crystal molecule is got back to without virgin state during electric field by rotation status when having electric field.
8. image element driving method as claimed in claim 7, the voltage wherein bestowing these at least two kinds of varying levels comprises in the step of these pixel electrodes:
When these liquid crystal molecule transitions, bestow voltage these pixel electrodes in same one-row pixels of same level.
9. image element driving method as claimed in claim 8, the common voltage wherein bestowing this particular level comprises in the step of this common electrode:
When these liquid crystal molecule transitions, one of them bestowing these at least two kinds of varying level voltages is in the pixel electrode of these one of them row of pixel electrode of adjacent rows pixel; And
Bestow wherein another of these at least two kinds of varying level voltages in the pixel electrode of another row wherein.
10. image element driving method as claimed in claim 9, wherein the common voltage of this particular level be the voltage of these at least two kinds of varying levels and the half of absolute value.
11. image element driving methods as claimed in claim 7, wherein the cell gap of this liquid crystal layer is d, and the Pixel Dimensions of these pixel electrodes is p, and wherein d, p meet p<4d.
12. image element driving methods as claimed in claim 7, wherein the voltage of these at least two kinds of varying levels bestows the time length of these pixel electrodes, and the time length that the common voltage of this particular level bestows this common electrode is decided by following at least one of them factor: the voltage of these at least two kinds of varying levels, the common voltage of this particular level, the cell gap of this liquid crystal layer and the Pixel Dimensions of these pixel electrodes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110368975.6A CN103123423B (en) | 2011-11-18 | 2011-11-18 | Display panels and image element driving method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110368975.6A CN103123423B (en) | 2011-11-18 | 2011-11-18 | Display panels and image element driving method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103123423A CN103123423A (en) | 2013-05-29 |
| CN103123423B true CN103123423B (en) | 2016-03-02 |
Family
ID=48454463
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110368975.6A Active CN103123423B (en) | 2011-11-18 | 2011-11-18 | Display panels and image element driving method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103123423B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10685619B2 (en) * | 2017-05-10 | 2020-06-16 | Himax Display, Inc. | Display apparatus and related driving method utilizing common voltage modulation |
| CN107492356A (en) | 2017-08-25 | 2017-12-19 | 惠科股份有限公司 | Liquid crystal display device and its driving method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85101696A (en) * | 1985-04-01 | 1987-01-31 | 菲利浦光灯制造公司 | Liquid crystal display device |
| JPH09146070A (en) * | 1995-11-27 | 1997-06-06 | Matsushita Electric Ind Co Ltd | Driving method for liquid crystal display device |
| CN1184534A (en) * | 1995-05-19 | 1998-06-10 | 先进显示体系股份有限公司 | Ultra fast response, multistable, reflective cholesteric liquid crystal displays |
| CN1359480A (en) * | 1999-12-24 | 2002-07-17 | 皇家菲利浦电子有限公司 | Indication containing display window |
| CN1532800A (en) * | 2001-02-19 | 2004-09-29 | ������������ʽ���� | Active matrix liquid crystal display device with lin/row reverse driver and electronic device thereof |
-
2011
- 2011-11-18 CN CN201110368975.6A patent/CN103123423B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85101696A (en) * | 1985-04-01 | 1987-01-31 | 菲利浦光灯制造公司 | Liquid crystal display device |
| CN1184534A (en) * | 1995-05-19 | 1998-06-10 | 先进显示体系股份有限公司 | Ultra fast response, multistable, reflective cholesteric liquid crystal displays |
| JPH09146070A (en) * | 1995-11-27 | 1997-06-06 | Matsushita Electric Ind Co Ltd | Driving method for liquid crystal display device |
| CN1359480A (en) * | 1999-12-24 | 2002-07-17 | 皇家菲利浦电子有限公司 | Indication containing display window |
| CN1532800A (en) * | 2001-02-19 | 2004-09-29 | ������������ʽ���� | Active matrix liquid crystal display device with lin/row reverse driver and electronic device thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103123423A (en) | 2013-05-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7956832B2 (en) | Liquid crystal display device | |
| JP4331192B2 (en) | Liquid crystal display device and driving method thereof | |
| US8743043B2 (en) | Method for driving scan lines on display device | |
| US7106284B2 (en) | Liquid crystal display device | |
| US8477127B2 (en) | Liquid crystal display device and method of driving the same | |
| US7880716B2 (en) | Liquid crystal display device | |
| KR20040010372A (en) | Liquid-crystal display device and driving method thereof | |
| US20130016137A1 (en) | Liquid crystal display device | |
| TWI408648B (en) | Field sequential lcd driving method | |
| JP5121334B2 (en) | Liquid crystal display device and driving method of liquid crystal display device | |
| CN110728959A (en) | Liquid crystal display device having a plurality of pixel electrodes | |
| CN101527124B (en) | Method for driving liquid crystal display | |
| JP4342538B2 (en) | Liquid crystal display device and driving method of liquid crystal display device | |
| US20080158125A1 (en) | Liquid crystal display device | |
| CN103123423B (en) | Display panels and image element driving method thereof | |
| KR100749851B1 (en) | Driving method of liquid crystal display device and liquid crystal display device | |
| JP3918399B2 (en) | Liquid crystal element | |
| JP3913040B2 (en) | Method for driving liquid crystal display device and liquid crystal display device | |
| TW201227693A (en) | Driving method for liquid crystal display device and related device | |
| JP2008268436A (en) | Liquid crystal display device | |
| US20100165445A1 (en) | Displaying Method for Electrophoretic Display and Electrophoretic Display using the same | |
| JP2008276116A (en) | Liquid crystal display device and method for driving liquid crystal display device | |
| JP3815212B2 (en) | Electro-optical device, electronic apparatus, and method of adjusting electro-optical device | |
| JP2002169514A (en) | Liquid crystal display and display method for the same | |
| TW202142938A (en) | Driving module and driving method thereof for active matrix driving cholesteric liquid crystal display device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |