CN101144954B - Liquid crystal display and liquid crystal display panel - Google Patents
Liquid crystal display and liquid crystal display panel Download PDFInfo
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- CN101144954B CN101144954B CN200710188136XA CN200710188136A CN101144954B CN 101144954 B CN101144954 B CN 101144954B CN 200710188136X A CN200710188136X A CN 200710188136XA CN 200710188136 A CN200710188136 A CN 200710188136A CN 101144954 B CN101144954 B CN 101144954B
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Abstract
The present invention discloses a liquid crystal display panel and a liquid crystal display, the LCD panel comprises a plurality of pixel units, a first common voltage region and a second common voltage region. A plurality of pixel units comprise a first group of pixel units and a second group of pixel units, and the pixel units are in array-like arrangement. The first common voltage region is carried with a first AC voltage, and connected with the first group of pixel units by electricity. The second common voltage region is carried with a second AC voltage, and connected with the second group of pixel units by electricity.
Description
Technical field
The present invention relates to a kind of display panels, and relate in particular to a kind of display panels with two kinds of common voltages.
Background technology
The tradition display panels is to arrange institute by pixel unit array to constitute.Please refer to Fig. 1, it is the vertical view of traditional display panels.The tradition display panels comprises many gate lines 102 and signal wire 104, arrangement intersected with each other and mark off a plurality of pixel cells 106.The tradition display panels comprises a common voltage region 108 in addition, in order to provide DC voltage or alternating voltage to each pixel cell.The pixel cell of tradition display panels has different reversing mode, for example row counter-rotatings (row inversion), row counter-rotating (column inversion) and some counter-rotating (dot inversion).When common voltage was DC voltage, source electrode driver need use high-pressure process to satisfy the amplitude that is produced when signal voltage is stated from common voltage last.For example, please refer to Figure 1A, it illustrates signal is the synoptic diagram of DC voltage position standard with the common voltage.When common voltage Vcom was 5V, data-signal Data then needed to vibrate up and down in 5V.Therefore source electrode driver must have the driving force of 10V at least.This high-pressure process can improve the price of chip, and the temperature when causing the source electrode driver start raises and power consumption.
Moreover, if common voltage is an alternating voltage, then can in the reversing mode of row counter-rotating, reach the effect of counter-rotating with less voltage amplitude.Please refer to Figure 1B, it illustrates signal is the synoptic diagram of alternating voltage position standard with the common voltage.Shown in Figure 1B, with X pixel cell behavior example, when at N picture, the polarity of common voltage and signal is just opposite, so only need the amplitude range of 5V then can reach counter-rotating.For example, when common voltage when N+1 picture is 0V, voltage data signal can be 5V, then the cross-pressure of actual pixels electric capacity is 5V.When common voltage when N picture is 5V, if the required cross-pressure of pixel capacitance is-5V that then voltage data signal only needs 0V to get final product.This shows, adopt alternating voltage can make the voltage level scope that needs 10V originally just can reach the panel of counter-rotating, now only need the voltage level of 5V just can reverse.
Yet, list can only provide all pixel cells a same alternating voltage with a common voltage region simultaneously, therefore only be applicable to the reversing mode of row counter-rotating, if but desire when adopting the reversing mode of row counter-rotating or some counter-rotating then can't dwindle the accurate scope in driving voltage position.Please refer to Fig. 1 C, row counter-rotating or some counter-rotating are to input in the signal wire the signal of two kinds of opposite polarities is staggered, therefore, the accurate scope in driving voltage position that the X pixel cell is capable can be dwindled (for example 5V) by an alternating voltage, but the signal polarity that the capable signal of adjacent X+1 pixel cell and X pixel cell are capable is opposite, also be that common voltage not only can't make the reduction of voltage level scope, make the accurate scope in driving voltage position increase (for example 10V is to the voltage level scope of-15V that 5V produces) on the contrary, cause minus effect.
Therefore, can't under the situation of the accurate scope in reduction driving voltage position, reverse with single common voltage region at present with the reversing mode of row counter-rotating or some counter-rotating.
Summary of the invention
Technical matters to be solved by this invention is to provide a kind of panel of LCD and LCD, reverses under the reversing mode of can be expert at counter-rotating or some counter-rotating, and does not increase the accurate scope in output voltage position of source electrode driver.
For achieving the above object, panel of LCD provided by the present invention comprises a plurality of pixel cells, first common voltage region, and second common voltage region.A plurality of pixel cells comprise the first sets of pixels unit and the second sets of pixels unit, and pixel cell is arrayed.First common voltage region is loaded with first alternating voltage, and electrically connects with the first sets of pixels unit.Second common voltage region is loaded with second alternating voltage, and electrically connects with the second sets of pixels unit.
And, for achieving the above object, the invention provides a kind of LCD, comprising: a panel of LCD comprises: a plurality of pixel cells, comprise one first sets of pixels unit and one second sets of pixels unit, those pixel cells are arrayed; One first common voltage region is loaded with one first alternating voltage, electrically connects with this first sets of pixels unit; And one second common voltage region, be loaded with one second alternating voltage, electrically connect with this second sets of pixels unit; And a plurality of common voltage drivers, in order to this first alternating voltage and this second alternating voltage to be provided respectively.
One embodiment of the invention adopt two common voltage region, with common voltage that two opposite polarities are provided to pairing pixel cell.Therefore, when the signal of two kinds of opposite polarities inputed to the first and second sets of pixels unit, the common voltage of two opposite polarities then can be avoided the expansion of the accurate scope in driving voltage position.
Describe the present invention below in conjunction with the drawings and specific embodiments, but not as a limitation of the invention.
Description of drawings
Fig. 1 is the vertical view of traditional display panels;
It is the synoptic diagram of DC voltage position standard with the common voltage that Figure 1A illustrates signal; It is the synoptic diagram of alternating voltage position standard with the common voltage that Figure 1B illustrates signal;
Fig. 1 C illustrates the synoptic diagram of the capable driving voltage position standard of X pixel cell;
Fig. 2 A and Fig. 2 B are the vertical views that illustrates one embodiment of the invention; And
Fig. 3 A and Fig. 3 B illustrate the common voltage of embodiments of the invention and the synoptic diagram of signal.
Wherein, Reference numeral:
102: gate line 104: signal wire
106: pixel cell 108: common voltage region
200: panel of LCD 202: pixel cell
202A: the first sets of pixels unit 202B: the second sets of pixels unit
203A: the first electric capacity common electrode 203B: the second electric capacity common electrode
204: the first common voltage region 204A: first conductive material
206: the second common voltage region 206A: second conductive material
208a, 208b, 208c, 208d, 208e, 208f, 208g: switching pad
Embodiment
Please refer to Fig. 2 A and Fig. 2 B, it illustrates the vertical view of one embodiment of the invention.Panel of LCD 200 comprises a plurality of pixel cells 202, first common voltage region 204 and second common voltage region 206.Among Fig. 2 A, pixel cell 202 comprises the first sets of pixels unit 202A and the second sets of pixels unit 202B, and pixel cell 202 is an arrayed.First common voltage region 204 that Fig. 2 B illustrates the upper strata that is positioned at pixel cell 202 is loaded with first alternating voltage (Vcom1), and electrically connects with the first sets of pixels unit 202A.Second common voltage region 206 is loaded with second alternating voltage (Vcom2), and electrically connects with the second sets of pixels unit 202B.
In the present embodiment, the first sets of pixels unit 202A can with the second sets of pixels unit 202B arrangement that intermeshes.That is to say that the pixel cell around the pixel cell among the first sets of pixels unit 202A all belongs to the second sets of pixels unit 202B.Therefore, non-conterminous mutually with the pixel cell of group.More detailed, per two adjacent pixel cells 202 one first electric capacity common electrode 203A wherein can electrically connect with first conductive material, and the second electric capacity common electrode 203B of another pixel cell 202 then can electrically connect with second conductive material.This kind pixel cell arranged in groups mode is the reversing mode for the corresponding point counter-rotating.
First common voltage region 204 can be electrically connected at the electric capacity common electrode of the first sets of pixels unit 202A by the first conductive material 204A mutually.First common voltage region 204 can be an electro-conductive glass.The first conductive material 204A can be a plain conductor.When the first conductive material 204A was loaded with Vcom1,204 of first common voltage region were loaded with Vcom1, and the first sets of pixels unit 202A all with Vcom1 as its common voltage.Same, second common voltage region 206 can be electrically connected at the electric capacity common electrode of the second sets of pixels unit 202B by the second conductive material 206A mutually.Second common voltage region 206 can be an electro-conductive glass.The second conductive material 206A can be a plain conductor.When the second conductive material 206A was loaded with Vcom2,206 of second common voltage region were loaded with Vcom2, and the second sets of pixels unit 202B all with Vcom2 as its common voltage.Wherein first and second common voltage region 204,206 can be electrically connected at the corresponding first conductive material 204A and the second conductive material 206A with switching pad 208a, 208b, 208c, 208d, 208e, 208f, 208g.
In addition, first common voltage region 204 and second common voltage region 206 can lay respectively at the different metal level of panel of LCD, and electrical isolation each other.First common voltage region 204 and second common voltage region 206 can be staggered on the first sets of pixels unit 202A of correspondence and the second sets of pixels unit 202B.
The arrangement connected mode of first common voltage region 204 and second common voltage region 206 and the first sets of pixels unit 202A and the second sets of pixels unit 202B also can be gone and be reversed or be listed as the reversing mode of reversing is that benchmark is provided with.For example, the first sets of pixels unit 202A can comprise the pixel cell 202 of all odd-numbered lines, and the second sets of pixels unit 202B can comprise the pixel cell 202 of all even number lines.In other words, per two adjacent pixel cells capable (row) the first electric capacity common electrode 203A and this first conductive material wherein electrically connects, and the second electric capacity common electrode 203B of another row (row) then electrically connects with this second conductive material.
Please be simultaneously with reference to Fig. 3 A and Fig. 3 B, it illustrates the synoptic diagram of embodiments of the invention common voltage and signal.With the capable and adjacent X+1 pixel cell behavior example of X pixel cell that corresponds to Fig. 3 A and Fig. 3 B respectively, when N picture, Vcom1 can be a cathode voltage (for example 5V), and Vcom2 can be a cathode voltage (for example 0V or a following voltage).Be noted that in other embodiment, Vcom1 and Vcom2 also can be respectively cathode voltage and cathode voltage, embodiments of the present invention are not exceeded with above-mentioned situation.Have the signal Data1 of opposite polarity and Data2 and can interlock respectively and be sent among Fig. 2 A, switching pad 208a, 208c, 208e, 208g, and signal wire that 208b, 208d, 208f connected.That is to say that Data1 can be sent to the first sets of pixels unit 202A, and Data2 can be sent to the second sets of pixels unit 202B.With reference to figure 3A, Vcom1 that the X pixel cell is capable in N picture and the polarity of Data1 are opposite, therefore can dwindle the voltage level scope (for example amplitude in 0～-when the Data1 of 5V was stated from the Vcom1 of 5V, actual Data1 was an amplitude between 0～5V).Vcom2 that X+1 pixel cell is capable in N picture and the polarity of Data2 are opposite, so the voltage level scope can remain in the amplitude between 0～5V.
With reference to figure 3B, when N+1 picture, the reversal of poles of Vcom1 and Vcom2, and the reversal of poles of Data1 and Data2, voltage level scope that therefore also can be less is reversed.This shows, be loaded with the alternating voltage (Vcom1 of opposite polarity when use two, Vcom2) in two common voltage region (204,206) on and when being connected to corresponding pixel cell, then can in less voltage level scope, reverse, avoid using the source electrode driver of high voltage level scope, the temperature during with reduction cost of manufacture and chip start.
Display panels of the present invention can be arranged in pairs or groups and is applied to LCD.LCD can comprise above-mentioned display panels and common voltage driver, in order to first alternating voltage and second alternating voltage to be provided respectively.
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; those of ordinary skill in the art work as 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 (8)
1. a panel of LCD is characterized in that, comprising:
A plurality of pixel cells comprise the first sets of pixels unit and the second sets of pixels unit, and those pixel cells are arrayed, and have the electric capacity common electrode;
First common voltage region is loaded with first alternating voltage, is electrically connected at the electric capacity common electrode of this first sets of pixels unit by first conductive material; And
Second common voltage region is loaded with second alternating voltage, is electrically connected at the electric capacity common electrode of this second sets of pixels unit by second conductive material;
Per two an adjacent pixel cells pixel cell wherein is this first sets of pixels unit, and another pixel cell is this second sets of pixels unit;
This first common voltage region and this second common voltage region lay respectively at the different metal level of panel of LCD, this metal level electrical isolation; This first common voltage region and this second common voltage region are staggered on this first sets of pixels unit of correspondence and this second sets of pixels unit;
The polarity of this first alternating voltage and this second alternating voltage is opposite.
2. panel of LCD according to claim 1 is characterized in that, other comprises a switching pad, and this first and second common voltage region is electrically connected at first and second corresponding conductive material with this switching pad.
3. panel of LCD according to claim 1 is characterized in that, this first conductive material and second conductive material are staggered on those pixel cells that first common voltage region of correspondence and this second common voltage region are connected.
4. panel of LCD according to claim 1 is characterized in that, this first common voltage region and second common voltage region system respectively are an electro-conductive glass.
5. a LCD is characterized in that, comprising:
One panel of LCD comprises:
A plurality of pixel cells comprise one first sets of pixels unit and one second sets of pixels unit, and those pixel cells are arrayed, and have the electric capacity common electrode;
One first common voltage region is loaded with one first alternating voltage, is electrically connected at the electric capacity common electrode of this first sets of pixels unit by first conductive material; And
One second common voltage region is loaded with one second alternating voltage, is electrically connected at the electric capacity common electrode of this second sets of pixels unit by second conductive material; And
A plurality of common voltage drivers are in order to provide this first alternating voltage and this second alternating voltage respectively;
Per two an adjacent pixel cells pixel cell wherein is this first sets of pixels unit, and another pixel cell is this second sets of pixels unit;
This first common voltage region and this second common voltage region lay respectively at the different metal level of panel of LCD, this metal level electrical isolation; This first common voltage region and this second common voltage region are staggered on this first sets of pixels unit of correspondence and this second sets of pixels unit; The polarity of this first alternating voltage and this second alternating voltage is opposite.
6. LCD according to claim 5 is characterized in that, other comprises a switching pad, and this first and second common voltage region is electrically connected at this corresponding first and second conductive material with this switching pad.
7. LCD according to claim 5 is characterized in that, this first conductive material and this second conductive material are staggered on those pixel cells that this first common voltage region of correspondence and this second common voltage region are connected.
8. LCD according to claim 5 is characterized in that, this first common voltage region and second common voltage region are electro-conductive glass.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710188136XA CN101144954B (en) | 2007-11-09 | 2007-11-09 | Liquid crystal display and liquid crystal display panel |
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| CN200710188136XA CN101144954B (en) | 2007-11-09 | 2007-11-09 | Liquid crystal display and liquid crystal display panel |
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| CN101144954B true CN101144954B (en) | 2010-06-02 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP5643422B2 (en) * | 2011-03-18 | 2014-12-17 | シャープ株式会社 | Liquid crystal display |
| CN103745704B (en) * | 2013-12-30 | 2016-06-01 | 合肥京东方光电科技有限公司 | Liquid crystal display drive circuit, Liquid Crystal Display And Method For Driving |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030095091A1 (en) * | 2001-11-16 | 2003-05-22 | Fujitsu Limited | Liquid crystal display |
| WO2003083815A2 (en) * | 2002-03-28 | 2003-10-09 | Koninklijke Philips Electronics N.V. | Liquid crystal display driving with dot-inversion |
| US20040115851A1 (en) * | 1998-11-17 | 2004-06-17 | Semiconductor Energy Laboratory Co., Ltd. | Active matrix type semiconductor display device |
| CN1549035A (en) * | 2003-05-12 | 2004-11-24 | 友达光电股份有限公司 | Liquid crystal display device with homogeneous shared voltage and producing method thereof |
| US20050001807A1 (en) * | 2003-07-03 | 2005-01-06 | Lee Jae Kyun | Method for driving in-plane switching mode liquid crystal display device |
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2007
- 2007-11-09 CN CN200710188136XA patent/CN101144954B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040115851A1 (en) * | 1998-11-17 | 2004-06-17 | Semiconductor Energy Laboratory Co., Ltd. | Active matrix type semiconductor display device |
| US20030095091A1 (en) * | 2001-11-16 | 2003-05-22 | Fujitsu Limited | Liquid crystal display |
| WO2003083815A2 (en) * | 2002-03-28 | 2003-10-09 | Koninklijke Philips Electronics N.V. | Liquid crystal display driving with dot-inversion |
| CN1549035A (en) * | 2003-05-12 | 2004-11-24 | 友达光电股份有限公司 | Liquid crystal display device with homogeneous shared voltage and producing method thereof |
| US20050001807A1 (en) * | 2003-07-03 | 2005-01-06 | Lee Jae Kyun | Method for driving in-plane switching mode liquid crystal display device |
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