CN102073182A - Display and pixel circuit thereof - Google Patents
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- CN102073182A CN102073182A CN2010105636566A CN201010563656A CN102073182A CN 102073182 A CN102073182 A CN 102073182A CN 2010105636566 A CN2010105636566 A CN 2010105636566A CN 201010563656 A CN201010563656 A CN 201010563656A CN 102073182 A CN102073182 A CN 102073182A
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Abstract
The invention relates to a display and a pixel circuit thereof. The display comprises the pixel circuit and a drive circuit, wherein the drive circuit is used for providing a drive voltage to the pixel circuit, the pixel circuit belongs to a two-data-line and one-grid-line framework and at least comprises two pixel electrodes, and the two pixel electrodes belong to the same pixel type and are arranged adjacently.
Description
Technical field
The invention relates to a kind of display and image element circuit thereof.Particularly, the invention relates to and a kind ofly have two and belong to the same pixel kenel together and face the display and the image element circuit thereof of the pixel electrode of setting mutually.
Background technology
Along with LCD constantly develops towards large-sized demonstration specification, in order to overcome the visual angle problem under the large scale demonstration, the wide viewing angle technology of display panels also must ceaselessly improve and break through.Wherein, multidomain vertical alignment type (Multi-domain Vertical Alignment, MVA) (Polymer stabilized alignment, PSA) display panels is existing common wide viewing angle technology for display panels and polymer-stabilized alignment.
In order to improve the colour cast problem (color washout) in the display panels, having into, rank type multidomain vertical alignment type (Advanced-MVA) display panels is suggested, it mainly is each pixel region to be divided into main viewing area (main display region) promptly main pixel and sub-viewing area (sub-displayregion) is sub-pixel, and by suitable circuit design and driving method, make main pixel and sub-pixel in the same pixel have different cross-pressures respectively, to improve the colour cast problem.Therefore, import single pixel region and had the design that two data lines (data line) and one scan line (or claiming gate line gate line) or single pixel region have a data line and two sweep traces, be called 2D1G or 2G1D structure again.With the 2D1G structure is example, and a pixel region comprises two sub-pixels, is controlled by different data lines respectively.
In addition, see also Fig. 1, it is the synoptic diagram of an image element circuit, and generally speaking, the pixel electrode of above-mentioned MVA LCD and data line have two kinds of different electric connection structures usually: one is eurymeric (positive; P) pixel electrode, another is minus (negative; N) pixel electrode, and these two kinds of pixel electrodes are to be crisscross arranged with PNPNPN or NPNPNP mode in image element circuit, produce the phenomenon of colour cast by the formed image of image element circuit when only this mode of being crisscross arranged will cause showing specific picture easily, and then influence the display quality of LCD.
Particularly, on behalf of green pixel electrode and B, red pixel electrode, G in the R represent pixel electrode of Fig. 1 represent the blue pixel electrode, wherein on behalf of this pixel, white background show bright attitude, on behalf of this pixel, black matrix show dark attitude, by among Fig. 1 as can be known, when showing a picture and have each R, G and B pixel electrode during simultaneously for bright attitude with simultaneously for dark attitude, when data line to go reversed polarity (column inversion) when driving, can cause the colour cast situation to produce.Pixel electrode arrangement mode with Fig. 1 is an example, and when showing a gridiron pattern pattern picture, among main pixel column A, B and the C, the polarity of green main pixel is all positive pole.
In detail, please refer to Fig. 2, it is pulled away from the synoptic diagram of DC level originally for the common electrode signal by the data line signal of positive-negative polarity, when data line signal changes, the common electrode voltage (VCOM) of pel array side can be pullled by data line signal (VData), causes waveform as shown in Figure 2.When the rising of data line signal current potential, VCOM can up be lifted and be drawn, and when the decline of data line signal current potential, VCOM can be pullled downwards.Therefore when data line when going reversed polarity (column inversion) driving, among main pixel column A, B and the C, the polarity of green main pixel is all positive pole, polarity red and blue main pixel is all negative pole, cause the VCOM signal to pull toward the polar orientation of red (or blue) main pixel, therefore demonstration is gone up green than the GTG height that defines originally, and all the other dichromatisms are then low than the GTG that defines originally, and therefore the phenomenon of aforementioned colour cast (green partially) just produces.In addition, when the pixel electrode color alignment changes, all can cause different color offset phenomenons.
In sum, how effectively to avoid the formed image of image element circuit to produce the phenomenon of colour cast, and then promote the display quality of LCD, and increase the surcharge of this industry, the problem that need solve for dealer's utmost point in this field.
Summary of the invention
A purpose of the present invention is to provide a kind of image element circuit that belongs to one or two data lines, one gate line framework and be used for a display, this display comprises one drive circuit, be electric connection and provide a driving voltage with this image element circuit to this image element circuit, this image element circuit can effectively improve the phenomenon of display frame colour cast by the set-up mode of pixel electrode.
For reaching above-mentioned purpose, this image element circuit comprises a data line group, one first pixel electrode and one second pixel electrode.This data line group and this driving circuit are electric connection, this first pixel electrode and this data line group are electric connection, and when presenting a conducting state, receive this driving voltage by this data line group, this second pixel electrode and this first pixel electrode belong to a pixel kenel and adjacent this first pixel electrode setting, this second pixel electrode more is electric connection and when presenting this conducting state, receives this driving voltage by this data line group with this data line group.
In addition, for reaching above-mentioned purpose, this display comprises a plurality of pixel electrodes, one first polarity data line and one second polarity data line, this first polarity data line is electrically connected to each those pixel electrode, this second polarity data line is electrically connected to each those pixel electrode, the main pixel of at least two adjacent pixel regions in those pixel regions is electrically connected to this first polarity data line respectively, is electrically connected to this second polarity data line respectively with the sub-pixel of at least two adjacent pixel regions in this pixel region.
In sum, two pixel electrodes that the present invention will belong to same pixel kenel face setting mutually, by this, the common electrode signal is pullled toward same polar orientation in the time of can effectively suppressing the waveform transformation in driving voltage, make and show that going up red, green, blue three looks can meet the GTG of definition originally, this will help to improve the phenomenon of specific display frame colour cast, and increase the surcharge of this industry.
After consulting embodiment graphic and that describe subsequently, those skilled in the art just can understand other purpose of the present invention, and technological means of the present invention and enforcement aspect.
Description of drawings
Fig. 1 is the synoptic diagram of known pixel circuit;
Fig. 2 is the signal waveforms of known pixel circuit;
Fig. 3 is the synoptic diagram of first embodiment of the invention; And
Fig. 4 is the synoptic diagram of the image element circuit of first embodiment.
[main element label declaration]
1: display 11: image element circuit
111: the first pixel electrode 111a: the first main pixel
111b: 113: the second pixel electrodes of first sub-pixel
113a: the second main pixel 113b: second sub-pixel
115: the three pixel electrode 115a: the 3rd main pixel
115b: 117: the four pixel electrodes of the 3rd sub-pixel
117a: the 4th main pixel 117b: the 4th sub-pixel
119a: the first main pixel data line 119b: first sub-pixel data line
119c: the second main pixel data line 119d: second sub-pixel data line
119f: the 3rd main pixel data line 119e: the 3rd sub-pixel data line
119h: the 4th main pixel data line 119g: the 4th sub-pixel data line
119i: grid line groups 13: driving circuit
A, B, C: main pixel column N: minus pixel electrode
P: eurymeric pixel electrode
Embodiment
Below will explain content of the present invention by embodiment, embodiments of the invention are not must can implement as the described any particular environment of embodiment, application or particular form in order to restriction the present invention.Therefore, only be explaination purpose of the present invention about the explanation of embodiment, but not in order to restriction the present invention.Must the expositor, following examples and graphic in, omit and do not illustrate with the non-directly related element of the present invention, and in graphic each interelement size relationship only for asking easy understanding, non-in order to limit actual ratio.
The first embodiment of the present invention as shown in Figure 3, it is the synoptic diagram of a display 1, by among Fig. 3 as can be known, display 1 comprises an image element circuit 11 and one drive circuit 13, image element circuit 11 belongs to one or two data lines, one gate line (two data lines one gate line; 2D1G) framework and be electric connection with driving circuit 13, driving circuit 13 can show in response to driving voltage in order to do it in order to provide a driving voltage to image element circuit 11.
Particularly, the image element circuit 11 of present embodiment comprises a data line group, a grid line groups 119i, one first pixel electrode 111, one second pixel electrode 113, one the 3rd pixel electrode 115 and one the 4th pixel electrode 117, grid line groups 119i is electric connection with first pixel electrode 111, second pixel electrode 113, the 3rd pixel electrode 115 and the 4th pixel electrode 117 respectively, to control the conducting state of those pixel electrodes.The person of noting, image element circuit 11 comprises the visual actual operating position of number of pixel electrode and does increase and decrease, and those skilled in the art can understand how to realize the present invention in the pixel electrode of other number easily according to the explanation of present embodiment, do not add at this and give unnecessary details.
Moreover, this data line group is electric connection with driving circuit 13, first pixel electrode 111, second pixel electrode 113, the 3rd pixel electrode 115 and the 4th pixel electrode 117 respectively, when being conducting state, can receive this driving voltage by this data line group in order to do first pixel electrode 111, second pixel electrode 113, the 3rd pixel electrode 115 and the 4th pixel electrode 117.
For avoiding image element circuit 11 formed images to produce the phenomenon of colour cast, present embodiment has been done following setting with first pixel electrode 111, second pixel electrode 113, the 3rd pixel electrode 115 and the 4th pixel electrode 117.First pixel electrode 111 of present embodiment and second pixel electrode 113 belong to a pixel kenel (for example eurymeric pixel kenel) together, and are close to 113 settings of second pixel electrode as shown in Figure 3.In addition, the 3rd pixel electrode 115 of present embodiment and the 4th pixel electrode 117 also belong to a pixel kenel (for example minus pixel kenel) together, and as shown in Figure 3, the 3rd pixel electrode 115 is provided with respect to first pixel electrode 111 and adjacent second pixel electrode 113, and the 4th pixel electrode 117 is provided with respect to second pixel electrode 113 and adjacent the 3rd pixel electrode 115.
The person of noting, in the present invention, the 3rd pixel electrode 115 and the 4th pixel electrode 117 can be eurymeric pixel kenel and minus pixel kenel one of them, but must be different with the pixel kenel under first pixel electrode 111 and second pixel electrode 113.More particularly, when first pixel electrode 111 and second pixel electrode 113 are eurymeric pixel kenel, the 3rd pixel electrode 115 and the 4th pixel electrode 117 must be minus pixel kenel, when first pixel electrode 111 and second pixel electrode 113 were minus pixel kenel, the 3rd pixel electrode 115 and the 4th pixel electrode 117 must be eurymeric pixel kenel.
Again by among Fig. 3 as can be known, first pixel electrode 111 comprises one first main pixel 111a and one first sub-pixel 111b; Second pixel electrode 113 comprises one second main pixel 113a and one second sub-pixel 113b; The 3rd pixel electrode 115 comprises one the 3rd main pixel 115a and one the 3rd sub-pixel 115b; The 4th pixel electrode 117 comprises one the 4th main pixel 117a and one the 4th sub-pixel 117b.Data line group comprises one first main pixel data line 119a, one first sub-pixel data line 119b, one second main pixel data line 119c, one second sub-pixel data line 119d, one the 3rd main pixel data line 119f, one the 3rd sub-pixel data line 119e, one the 4th main pixel data line 119h and one the 4th sub-pixel data line 119g.
The first main pixel 111a and the first main pixel data line 119a are electric connection, the first sub-pixel 111b and the first sub-pixel data line 119b are electric connection, the second main pixel 113a and the second main pixel data line 119c are electric connection, the second sub-pixel 113b and the second sub-pixel data line 119d are electric connection, the 3rd main pixel 115a and the 3rd main pixel data line 119f are electric connection, the 3rd sub-pixel 115b and the 3rd sub-pixel data line 119e are electric connection, the 4th main pixel 117a and the 4th main pixel data line 119h are electric connection, and the 4th sub-pixel 117b and the 4th sub-pixel data line 119g are electric connection.
Again as shown in Figure 3, the first sub-pixel data line 119b is that the next-door neighbour second main pixel data line 119c is provided with, the second sub-pixel data line 119d is that next-door neighbour the 3rd main pixel data line 119f is provided with, and the 3rd sub-pixel data line 119e is that next-door neighbour the 4th main pixel data line 119h is provided with.By aforementioned arrangements, those main pixels and those sub-pixels can receive the driving voltage that driving circuit 13 is provided, to move according to driving voltage respectively by the preceding data line that connects.
Again by the angle of circuit layout, the first main pixel data line 119a, the second main pixel data line 119c, the 3rd main pixel data line 119f and the 4th main pixel data line 119h can be considered one first polarity data line, the first sub-pixel data line 119b, the second sub-pixel data line 119d, the 3rd sub-pixel data line 119e and the 4th sub-pixel data line 119g can be considered one second polarity data line, for effectively improving the phenomenon of display frame colour cast, driving circuit 13 will pass through this first polarity data line and this second polarity data, provides the different driving voltage of polarity to each main pixel and sub-pixel.
Particularly, when transmitting an anodal driving voltage by this first polarity data line to main pixel 111a, main pixel 113a, sub-pixel 115b and sub-pixel 117b, driving circuit 13 transmits a negative pole driving voltage to sub-pixel 111b, sub-pixel 113b, main pixel 115a and main pixel 117a by this second polarity data line, by the mode with a polarity driven, the main pixel of image element circuit and sub-pixel will present polarity as shown in Figure 4.
See also Fig. 4, it is the synoptic diagram of image element circuit, in Fig. 4, red pixel electrode in the R represent pixel electrode, on behalf of green pixel electrode and B, G represent the blue pixel electrode, wherein on behalf of this pixel, white background show bright attitude, on behalf of this pixel, black matrix show dark attitude, by among Fig. 4 as can be known, the pixel electrode that will belong to same pixel kenel by present embodiment faces the mode that is provided with and the dissimilar polarities driving voltage is provided mutually, main pixel column A, the polarity of the green main pixel of B and C will have just having negative, and the main pixel tool identical polar that faces mutually must be arranged, but not as known technology master pixel column A, the polarity of the green main pixel of B and C is all for just, and the main pixel of facing mutually must possess opposed polarity.By this, when data-switching, the waveform of data can positive and negatively be cancelled out each other, with the green partially phenomenon of effective elimination display frame.
In other words, circuit layout with Fig. 3 is seen it, in the pixel electrode that image element circuit 11 is comprised, have at least the main pixel of two adjacent pixel electrodes to be electrically connected to the first polarity data line respectively, and the sub-pixel that has two adjacent pixel electrodes at least is electrically connected to the second polarity data line respectively, the main pixel and the pixel electrode of at least two adjacent pixel electrodes in those pixel electrodes, be electrically connected to this second polarity data line and this first polarity data line respectively, by this circuit arrangement mode, can effectively eliminate the phenomenon of display frame colour cast.
In sum, two pixel electrodes that the present invention will belong to same pixel kenel face setting mutually, by this, the VCOM signal is pullled toward the polar orientation of red (or blue) main pixel in the time of can effectively avoiding the waveform transformation in driving voltage, make and show that going up red, green, blue three looks can meet the GTG of definition originally, this will help to improve the phenomenon of display frame colour cast, and increase the surcharge of this industry.
The above embodiments only are used for exemplifying enforcement aspect of the present invention, and explain technical characterictic of the present invention, are not to be used for limiting protection category of the present invention.Any those skilled in the art can unlabored change or the arrangement of the isotropism scope that all belongs to the present invention and advocated, and the scope of the present invention should be as the criterion with the claim scope.
Claims (8)
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| CN2010105636566A CN102073182A (en) | 2010-11-24 | 2010-11-24 | Display and pixel circuit thereof |
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| CN2010105636566A CN102073182A (en) | 2010-11-24 | 2010-11-24 | Display and pixel circuit thereof |
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| CN201410709463.5A Division CN104391409A (en) | 2010-11-24 | 2010-11-24 | Display and pixel circuit thereof |
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| CN103258490A (en) * | 2012-02-17 | 2013-08-21 | 联咏科技股份有限公司 | Display driving device and driving method |
| CN104167194A (en) * | 2014-08-18 | 2014-11-26 | 深圳市华星光电技术有限公司 | Liquid crystal display panel gray-scale value setting method and liquid crystal display |
| US9443487B2 (en) | 2012-02-07 | 2016-09-13 | Novatek Microelectronics Corp. | Display driving apparatus and driving method thereof |
| CN108022564A (en) * | 2017-12-12 | 2018-05-11 | 友达光电股份有限公司 | Display device and driving method of display panel |
| CN110120190A (en) * | 2019-04-10 | 2019-08-13 | 深圳康佳电子科技有限公司 | A kind of Micro LED display panel and its control method |
| WO2020077712A1 (en) * | 2018-10-15 | 2020-04-23 | 惠科股份有限公司 | Display panel and display device |
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Application publication date: 20110525 |