CN103323990A - Liquid crystal display panel and liquid crystal display device - Google Patents
Liquid crystal display panel and liquid crystal display device Download PDFInfo
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- CN103323990A CN103323990A CN201310269534XA CN201310269534A CN103323990A CN 103323990 A CN103323990 A CN 103323990A CN 201310269534X A CN201310269534X A CN 201310269534XA CN 201310269534 A CN201310269534 A CN 201310269534A CN 103323990 A CN103323990 A CN 103323990A
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- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 29
- 239000000758 substrate Substances 0.000 claims abstract description 61
- 230000000694 effects Effects 0.000 claims abstract description 15
- 239000010409 thin film Substances 0.000 claims description 11
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 238000007599 discharging Methods 0.000 abstract 2
- 230000000007 visual effect Effects 0.000 description 13
- 238000000034 method Methods 0.000 description 5
- 206010047571 Visual impairment Diseases 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 241001637516 Polygonia c-album Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
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- 238000010586 diagram Methods 0.000 description 1
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
- G02F1/1362—Active matrix addressed cells
- G02F1/13624—Active matrix addressed cells having more than one switching element per pixel
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1343—Electrodes
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
- G09G3/3611—Control of matrices with row and column drivers
- G09G3/3648—Control of matrices with row and column drivers using an active matrix
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
- G09G3/3611—Control of matrices with row and column drivers
- G09G3/3648—Control of matrices with row and column drivers using an active matrix
- G09G3/3659—Control of matrices with row and column drivers using an active matrix the addressing of the pixel involving the control of two or more scan electrodes or two or more data electrodes, e.g. pixel voltage dependant on signal of two data electrodes
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1343—Electrodes
- G02F1/134309—Electrodes characterised by their geometrical arrangement
- G02F1/134318—Electrodes characterised by their geometrical arrangement having a patterned common electrode
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1343—Electrodes
- G02F1/134309—Electrodes characterised by their geometrical arrangement
- G02F1/134345—Subdivided pixels, e.g. for grey scale or redundancy
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2300/00—Aspects of the constitution of display devices
- G09G2300/04—Structural and physical details of display devices
- G09G2300/0439—Pixel structures
- G09G2300/0443—Pixel structures with several sub-pixels for the same colour in a pixel, not specifically used to display gradations
- G09G2300/0447—Pixel structures with several sub-pixels for the same colour in a pixel, not specifically used to display gradations for multi-domain technique to improve the viewing angle in a liquid crystal display, such as multi-vertical alignment [MVA]
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2300/00—Aspects of the constitution of display devices
- G09G2300/08—Active matrix structure, i.e. with use of active elements, inclusive of non-linear two terminal elements, in the pixels together with light emitting or modulating elements
- G09G2300/0809—Several active elements per pixel in active matrix panels
- G09G2300/0814—Several active elements per pixel in active matrix panels used for selection purposes, e.g. logical AND for partial update
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2300/00—Aspects of the constitution of display devices
- G09G2300/08—Active matrix structure, i.e. with use of active elements, inclusive of non-linear two terminal elements, in the pixels together with light emitting or modulating elements
- G09G2300/0809—Several active elements per pixel in active matrix panels
- G09G2300/0842—Several active elements per pixel in active matrix panels forming a memory circuit, e.g. a dynamic memory with one capacitor
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0257—Reduction of after-image effects
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Mathematical Physics (AREA)
- Computer Hardware Design (AREA)
- Optics & Photonics (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Liquid Crystal (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The invention discloses a liquid crystal display panel and a liquid crystal display device. Each pixel unit of a first substrate of the liquid crystal display panel comprises a first pixel electrode and a second pixel electrode, charging scanning lines and data lines respectively drive the first pixel electrodes and the second pixel electrodes via first switches and second switches to display images, third switches are connected with discharging scanning lines, input ends of the third switches are connected with the first pixel electrodes or the second pixel electrodes, output ends of the third switches are connected with discharging circuits, a second substrate of the liquid crystal display panel comprises a first common electrode and a second common electrode, the first common electrode corresponds to the first pixel electrodes to provide first common voltages, and the second common electrode corresponds to the second pixel electrodes to provide second common voltages. Owing to the mode, the liquid crystal display panel and the liquid crystal display device have the advantages that a low color shift effect at a large viewing angle can be improved, and image sticking is reduced advantageously.
Description
Technical field
The present invention relates to the display technique field, particularly relate to a kind of display panels and liquid crystal indicator.
Background technology
Many merits such as the TFT-LCD liquid crystal display is little with its volume, thin thickness, lightweight, picture flicker free and enjoy consumers welcomed replace gradually traditional CRT monitor and occupy most of monitor market.Yet in TFT-LCD, ubiquity with great visual angle colour cast (Low ColorShift) problem, and namely color distortion is larger under larger viewing angle, and color distortion is comparatively serious, especially adopts the large scale liquid crystal display panel of VA display technique more outstanding.In order to address the above problem, common way is that a pixel region in the array base palte is divided into main pixel region and time pixel region, makes two districts present different Gamma(gammas) curve.Subtense angle is different less under with great visual angle with just for the synthetic Gamma curve in two districts, obviously improves with great visual angle colour cast problem.
The pixel electrode that public electrode on colorized optical filtering (CF) substrate is used for the pair array substrate provides common electric voltage.But, public electrode on the CF substrate normally connects together, when employing is divided into the design of two pixel regions with a pixel region, main pixel region and time pixel region share the same common electrode voltage of colored optical filtering substrates side, can't independently control the required common electric voltage of main pixel region and time pixel region, bring difficulty for the control of the Gamma curve of two pixel regions, reduce the with great visual angle effect of colour cast.In addition, the common electric voltage that main pixel region and time pixel region are shared may all not be the best common electrode voltage of main pixel region and time pixel region, might cause main pixel region and time pixel region to produce electric charge residual, causes the image residue problem.
Summary of the invention
The technical matters that the present invention mainly solves provides a kind of display panels and liquid crystal indicator, can effectively reduce colour cast with great visual angle, reduces color distortion, can reduce image residue simultaneously.
For solving the problems of the technologies described above, the technical scheme that the present invention adopts is: a kind of display panels is provided, comprises first substrate, second substrate and the liquid crystal layer between first substrate and second substrate; First substrate comprises the pixel cell of many charging sweep traces, many discharges sweep trace, many data lines and a plurality of arrayed, the corresponding charging sweep trace of each pixel cell, a discharge sweep trace and a data line; Each pixel cell comprises the first pixel electrode, the second pixel electrode and act on respectively the first pixel electrode and the first switch and the second switch of the second pixel electrode, each pixel cell also comprises the 3rd switch and discharge circuit, each switch includes control end, input end and output terminal, the first switch, the control end of second switch all connects with the charging sweep trace of corresponding this pixel cell, the first switch, the input end of second switch all connects with the data line of corresponding this pixel cell, the output terminal of the first switch is connected with the first pixel electrode, the output terminal of second switch is connected with the second pixel electrode, the control end of the 3rd switch is connected with the discharge sweep trace, the input end of the 3rd switch is connected with the first pixel electrode or the second pixel electrode, the output terminal of the 3rd switch is connected with discharge circuit, with when driving the first pixel electrode and the second pixel electrode and show, make the non-vanishing predeterminated voltage of formation between the first pixel electrode and the second pixel electrode poor; Second substrate comprises the first public electrode and the second public electrode, and the first public electrode is corresponding with the first pixel electrode, and so that the first common electric voltage to be provided, the second public electrode is corresponding with the second pixel electrode, so that the second common electric voltage to be provided.
Wherein, the first public electrode and the second public electrode are separate, the first public electrode comprises a plurality of first sub-public electrode, the second public electrode comprises a plurality of second sub-public electrode, the first sub-public electrode and the second sub-public electrode are separate, the length direction of each the first sub-public electrode is identical with the orientation of a plurality of the first pixel electrodes that continuous adjacent arranges, so that each first sub-public electrode is corresponding with a row or column the first pixel electrode, cooperate the first pixel electrode required first common electric voltage when showing image to provide, the length direction of each the second sub-public electrode is identical with the orientation of a plurality of the second pixel electrodes that continuous adjacent arranges, so that each second sub-public electrode is corresponding with a row or column the second pixel electrode, cooperate the second pixel electrode required second common electric voltage when showing image to provide.
Wherein, the zone of all the described first sub-public electrode peripheries, viewing area of corresponding described display panels in second substrate is electrically connected, all described second sub-public electrodes correspondence described in second substrate the zone of the periphery, viewing area of corresponding described display panels be electrically connected.
Wherein, the described first sub-public electrode and the second sub-public electrode are strip.
Wherein, described display panels comprises the first common electrode drive device and the second common electrode drive device, described the first common electrode drive device is connected that with described the first public electrode described the first public electrode is inputted the first common electric voltage, and described the second common electrode drive device is connected that with described the second public electrode described the second public electrode is inputted the second common electric voltage.
Wherein, first substrate also comprises one the 3rd public electrode, discharge circuit comprises the first electric capacity and the second electric capacity, at the input end of the 3rd switch when one of them pixel electrode in the first pixel electrode, the second pixel electrode is connected, one end of the first electric capacity is connected with the one other pixel electrode, the other end of the first electric capacity is connected with an end of the second electric capacity, and the other end of the second electric capacity connects the 3rd public electrode of first substrate, and the output terminal of the 3rd switch is connected between the first electric capacity and the second electric capacity; Wherein, to charging sweep trace input scan signal to control the first switch and second switch conducting, the data line input data signal is shown to drive the first pixel electrode and the second pixel electrode, stop subsequently charging sweep trace input scan signal, to discharge sweep trace input scan signal controlling the 3rd switch conduction, under the effect of the first electric capacity and the second electric capacity to form predeterminated voltage between the first pixel electrode and the second pixel electrode poor.
Wherein, first substrate also comprises one the 3rd public electrode, discharge circuit is a discharge capacity, the input end of the 3rd switch is connected with the first pixel electrode or the second pixel electrode, the output terminal of the 3rd switch is connected with an end of discharge capacity, and the other end of discharge capacity connects the 3rd public electrode of first substrate; Wherein, to charging sweep trace input scan signal to control the first switch and second switch conducting, the data line input data signal is shown to drive the first pixel electrode and the second pixel electrode, stop subsequently charging sweep trace input scan signal, to control the 3rd switch conduction, the size of controlled discharge electric capacity is poor so that form predeterminated voltage between the first pixel electrode and the second pixel electrode to discharge sweep trace input scan signal.
Wherein, charging sweep trace, discharge sweep trace, the first switch, second switch, the 3rd switch and discharge circuit are all between the first pixel electrode and the second pixel electrode.
Wherein, the first switch, second switch and the 3rd switch are thin film transistor (TFT), and the control end of switch corresponds to the grid of thin film transistor (TFT), and the input end of switch corresponds to the source electrode of thin film transistor (TFT), and the output terminal of switch corresponds to the drain electrode of thin film transistor (TFT).
For solving the problems of the technologies described above, another technical solution used in the present invention is: a kind of liquid crystal indicator is provided, comprises above-mentioned each display panels.
The invention has the beneficial effects as follows: the situation that is different from prior art, display panels of the present invention, in first substrate, each pixel cell comprises the first pixel electrode and the second pixel electrode, the charging sweep trace of corresponding this pixel cell and data line drive the first pixel electrode by the first switch and second switch respectively and the second pixel electrode shows, the 3rd switch connects with the discharge sweep trace of corresponding this pixel cell, the input end of the 3rd switch is connected with the first pixel electrode or the second pixel electrode, the output terminal of the 3rd switch is connected with discharge circuit, when driving the demonstration of the first pixel electrode and the second pixel electrode, effect by discharge circuit makes the non-vanishing predeterminated voltage of formation between described the first pixel electrode and the second pixel electrode poor, namely so that the voltage of the first pixel electrode and the second pixel electrode is not identical, thereby so that the Liquid Crystal Molecules Alignment direction of corresponding the first pixel electrode and the liquid crystal layer of the second pixel electrode is not identical yet, the color distortion under can reducing thus with great visual angle.In addition, comprise the first public electrode and the second public electrode in the second substrate, the first public electrode is corresponding with the first pixel electrode, cooperate the first pixel electrode required first common electric voltage when showing image to provide, the second public electrode and the second pixel electrode are corresponding, cooperate the second pixel electrode required second common electric voltage when showing image to provide, can control respectively thus common electric voltage required when cooperating the first pixel electrode and the second pixel electrode to show image, low colour cast effect can be further improved thus, image residue can be effectively reduced simultaneously.
Description of drawings
Fig. 1 is the structural representation of display panels one embodiment of the present invention;
Fig. 2 is the structural representation of first substrate among Fig. 1;
Fig. 3 is the structural representation of the public electrode of the pixel electrode of first substrate among Fig. 1 and second substrate;
Fig. 4 is the schematic diagram of liquid crystal layer liquid crystal deflecting element under the control of the public electrode of the pixel electrode of first substrate and second substrate among Fig. 1;
Fig. 5 is in another embodiment of display panels of the present invention, the structural representation of first substrate.
Embodiment
The present invention is described in detail below in conjunction with concrete embodiment and accompanying drawing.
Consult Fig. 1-Fig. 3, in the embodiment of display panels of the present invention, that display panels comprises is first basic 10, second substrate 11 and the liquid crystal layer 12 between first substrate 10 and second substrate 11.Wherein, first substrate 10 is the array base palte in the display panels, and second substrate 11 is the colored optical filtering substrates in the display panels.
Further combined with Fig. 2, Fig. 2 is the structural representation of present embodiment first substrate 10.First substrate 10 comprises many charging sweep traces 101, many discharges sweep trace 102, many data lines 103 and a plurality of pixel cells 104 that are arrayed.Many charging sweep traces 101 and the sweep trace 102 that discharges are in alternately arrangement of column direction.Each pixel cell 104 is corresponding with a charging sweep trace 101, a discharge sweep trace 102 and a data line 103.Pixel cell 104 comprises the first pixel electrode 1041 and the second pixel electrode 1042, and the first switch 1043 and the second switch 1044 that act on respectively the first pixel electrode 1041 and the second pixel electrode 1042.The first pixel electrode 1041 and the second pixel electrode 1042 are arranged along column direction.Pixel cell 104 also comprises the 3rd switch 1045 and discharge circuit 1046.Wherein, the first pixel electrode 1041 and the second pixel electrode 1042 are arranged along column direction.Each switch includes control end, input end and output terminal.The control end that the control end of the first switch 1043 is connected with second switch all is connected with charging sweep trace 101, the input end that the input end of the first switch 1043 is connected with second switch all is connected with data line 103, the output terminal of the first switch 1043 is connected with the first pixel electrode 1041, and the output terminal of second switch 1044 is connected with the second pixel electrode 1042.The control end of the 3rd switch 1045 is connected with discharge sweep trace 102, and the input end of the 3rd switch 1045 is connected with the second pixel electrode 1042, and the output terminal of the 3rd switch 1045 is connected with discharge circuit.In the present embodiment, first substrate 10 also comprises the 3rd public electrode 105.Discharge circuit is that the output terminal of a discharge capacity 1046, the three switches 1045 is connected with an end of discharge capacity 1046, and the other end of discharge capacity is connected with the 3rd public electrode 105 on the first substrate 10.
In conjunction with Fig. 3, Fig. 3 is the structural representation of the public electrode of the pixel electrode of present embodiment first substrate 10 and second substrate 11.Second substrate 11 comprises that mutually independently the quantity of the first public electrode 111 and the second public electrode 112, the first public electrodes 111 and the second public electrode 112 is one.The first public electrode 111 is corresponding with the first pixel electrode 1041, and so that the first common electric voltage to be provided, the second public electrode 112 is corresponding with the second pixel electrode 1042, so that the second common electric voltage to be provided.Particularly, the first public electrode 111 comprise among a plurality of the first sub-public electrode 1111(figure that are strip only mark two), the second public electrode 112 comprise among a plurality of the second sub-public electrode 1121(figure that are strip only mark two).The length direction of each the first sub-public electrode 1111 is identical with the orientation of delegation's the first pixel electrode 1041, the length direction that is each the first sub-public electrode 1111 is line direction, so that the first pixel electrode 1041 corresponding first sub-public electrodes 1111 of the delegation in every delegation pixel cell 104; The length direction of each the second sub-public electrode 1121 is identical with the orientation of delegation's the second pixel electrode 1042, the length direction that is each the second sub-public electrode 1121 is line direction, so that the second pixel electrode 1042 corresponding second sub-public electrodes 1121 of the delegation in every delegation pixel cell 104.The first sub-public electrode 1111 and the second sub-public electrode 1121 mutually insulateds are independent, and its orientation is identical with the orientation of the first pixel electrode 1041 and the second pixel electrode 1042.On column direction, the first pixel electrode 1041 and the second pixel electrode 1042 alternative arrangements, the first sub-public electrode 1111 and the second sub-public electrode 1121 are also along the column direction alternative arrangement.In addition, the zone of all first sub-public electrode 1111 peripheries, viewing area of corresponding display panels in second substrate 11 is electrically connected, and all that are electrically connected the first sub-public electrode 1111 integral body are as first public electrode 111; The zone of all second sub-public electrode 1121 peripheries, viewing area of corresponding display panels in second substrate 11 is electrically connected, and all that are electrically connected the second sub-public electrode 1121 integral body are as second public electrode 112.In actual applications, when the first public electrode 111 of making present embodiment and the second public electrode 112, for example, when making the first public electrode 111, can use a monoblock transparency electrode to make, part corresponding to the viewing area of display panels in the monoblock transparency electrode is divided into a plurality of strip electrodes, obtain a plurality of first sub-public electrode 1111 with correspondence, then do not do corresponding to the zone of the periphery, viewing area of display panels in the monoblock transparency electrode and cut apart, so that the transparency electrode of a plurality of first sub-public electrode 1111 by corresponding viewing area periphery is electrically connected.And the second public electrode 112 also can adopt similar method for making to obtain.
In the alternative, all first sub-public electrodes also can be electrically connected in the zone of the viewing area of corresponding display panels in second substrate, all second sub-public electrodes also can be electrically connected in the zone of the viewing area of corresponding display panels, do not limit herein.In addition, the first sub-public electrode and the second sub-public electrode also can be other shapes such as cylindricality or triangle, and are not limited to above-mentioned strip.
Display panels also comprises the first common electrode drive device and the second common electrode drive device.Wherein, the first common electrode drive device is connected with the first public electrode 111, is specially, and the first common electrode drive device is connected with the first sub-public electrode 1111, so that the first sub-public electrode 1111 is inputted the first common electric voltage.The second common electrode drive device is connected with the second public electrode 112, is specially, and the second common electrode drive device is connected with the second sub-public electrode 1121, so that the second sub-public electrode is inputted the second common electric voltage.Wherein, the first common electrode drive device and the second common electrode drive device can adopt integrated driving IC chip to realize.In the alternative, also can apply corresponding common electric voltage to the first public electrode and the second public electrode respectively by the driving circuit that uses discrete component to consist of, this not done restriction.In addition, also can obstructedly overdrive device or driving circuit drive the first public electrode and the second public electrode, but respectively the first public electrode and the second public electrode are applied corresponding constant voltage signal by two reference voltage sources.
Present embodiment forms non-vanishing voltage difference by the effect of discharge capacity 1046 between first pixel electrode 1041 that can make and the second pixel electrode 1042, thereby reaches low colour cast effect.And provide respectively common electric voltage required when cooperating the first pixel electrode 1041 and the second pixel electrode 1042 to show image by the first public electrode 111 and the second public electrode 112, can further improve the low colour cast effect of display panels, and be conducive to reduce afterimage phenomenon.
Particularly, when driving the display panels demonstration, adopt the mode of lining by line scan to carry out the scanning of sweep trace.At first charging sweep trace 101 is applied sweep signal, to control the first switch 1043 and second switch 1044 conductings, data line 103 is respectively by the first switch 1043 and 1044 pairs of the first pixel electrodes 1041 of second switch and the second pixel electrode 1042 input data signals, and this moment, the first pixel electrode 1041 was identical with the second pixel electrode 1042 current potentials.And, demand according to the first pixel electrode 1041 and the second pixel electrode 1042 demonstration images, by the first common electrode drive device the first sub-public electrode 1111 on the second substrate 11 is applied the first common electric voltage, cooperate the first pixel electrode 1041 required first common electric voltage when showing image to provide, and by the second common electrode drive device the second sub-public electrode 1121 is applied the second common electric voltage, cooperate the second pixel electrode 1042 required second common electric voltage when showing image to provide.By the first sub-public electrode 1111 on charging sweep trace 101, data line 103 and the second substrate 11 and the acting in conjunction of the second sub-public electrode 1121, thereby drive the first pixel electrode 1041 and 1042 demonstrations of the second pixel electrode.Subsequently, stop charging sweep trace 101 input scan signals, to discharge sweep trace 102 input scan signals to control 1045 conductings of the 3rd switch.And because the input end of the 3rd on-off element 1045 connects the second pixel electrode 1042, output terminal connects discharge capacity 1046, and when 1045 conducting of the 3rd switch, the second pixel electrode 1042 and discharge capacity 1046 are electrically connected.According to the visual angle demand, the current potential size of controlled discharge electric capacity 1046, for example make the current potential of discharge capacity 1046 be lower than the current potential of the second pixel electrode 1042, thereby when the second pixel electrode 1042 and discharge capacity 1046 electric connection, the Partial charge of the second pixel electrode 1042 shifts, so that the current potential of the second pixel electrode 1042 is lower than the current potential of the first pixel electrode 1041, and then so that form non-vanishing voltage difference between the first pixel electrode 1041 and the second pixel electrode 1042.And the current potential of the first pixel electrode 1041 and the second pixel electrode 1042 is not identical, as shown in Figure 4, so that the deflection of the liquid crystal molecule in the liquid crystal layer 103 of corresponding the first pixel electrode 1041 of difference and the second pixel electrode 1042 is not identical yet, thereby the heterochromia under can reducing with great visual angle reaches the effect that bends down with great visual angle colour cast.
Further, demonstration demand according to different visual angles, the common electric voltage possibility of the first pixel electrode 1041 and the second pixel electrode 1042 required cooperation when showing image is identical may be not identical yet, and the first sub-public electrode 1111 and the second sub-public electrode 1121 by present embodiment, the best common electric voltage of required cooperation separately when can be respectively providing it to show image to the first pixel electrode 1041 and the second pixel electrode 1042, rather than adopt the same public electrode of traditional use the first pixel electrode and the second pixel electrode to be provided the mode of identical common electric voltage, thus can be not identical with voltage difference between the second pixel electrode 1042 and the second sub-public electrode 112 according to the voltage difference that the visual angle demand is controlled between the first pixel electrode 1041 and the first sub-public electrode 1111 better, so that the yawing moment of the liquid crystal molecule of corresponding the first pixel electrode 1041 is not identical with the yawing moment of the liquid crystal molecule of corresponding the second pixel electrode 1042, with the low colour cast effect of further raising.In addition, the best common electric voltage of required cooperation when the first pixel electrode 1041 and the second pixel electrode 1042 all can obtain to show image, the electric charge that can effectively reduce the first pixel electrode 1041 and the second pixel electrode 1042 is residual, thereby reduces afterimage phenomenon.
The charging sweep trace 101 of present embodiment, discharge sweep trace 102, the first switch 1043, second switch 1044, the 3rd switch 1045 and discharge capacity 1046 be the light tight zone between the first pixel electrode 1041 and the second pixel electrode 1042 all, can improve thus the aperture opening ratio of display panels.In other embodiments, also charging sweep trace, discharge sweep trace and switch can be arranged on the light tight zone between the pixel cell.For example, for adjacent two pixel cells along column direction, the charging sweep trace of corresponding this pixel cell, discharge sweep trace, three switches and discharge capacity are all between this pixel cell and a upper pixel cell adjacent with this pixel cell.
In addition, the first switch 1043, second switch 1044 and the 3rd switch 1045 are film transistor device, the control end of switch corresponds to the grid of thin film transistor (TFT), and the input end of switch corresponds to the source electrode of thin film transistor (TFT), and the output terminal of switch corresponds to the drain electrode of thin film transistor (TFT).Certainly, in other embodiments, three switches 1043,1045,1046 also can be the gauge tap such as Darlington transistor, triode.
In alternative embodiment, the input end of the 3rd switch also can be connected pixel electrode and connect, effect by discharge capacity so that the current potential of the first pixel electrode change, and then so that have non-vanishing voltage difference between the first pixel electrode and the second pixel electrode, can reach equally low colour cast effect.
In addition, in the alternate embodiment, the first pixel electrode and the second pixel electrode also can follow direction and arrange, and this moment, the length direction of the first sub-public electrode was column direction, each first sub-public electrode is corresponding with row the first pixel electrode, so that the first common electric voltage to be provided; The length direction of the second sub-public electrode also is column direction, and each second sub-public electrode is corresponding with row the second pixel electrode, so that the second common electric voltage to be provided.In addition, second substrate also can comprise a plurality of independently the first public electrodes and a plurality of independently the second public electrode, and the first public electrode and the second public electrode are separate.At this moment, the corresponding row of each first public electrode or delegation's the first pixel electrode (orientation by the first pixel electrode and the second pixel electrode determines), each first public electrode is connected with first a common electrode drive device; Corresponding row or delegation's second pixel electrode of each second public electrode, each second public electrode is connected with second a common electrode drive device.Can realize equally by the way separately the first pixel electrode and the second pixel electrode being applied corresponding common electric voltage.
In other alternate embodiment, the first public electrode and the second public electrode also can be to be electrically connected, both the first public electrode and the second public electrode are electrically connected, so that can obtain respectively the first common electric voltage and the second common electric voltage simultaneously by rational reduction voltage circuit or booster circuit.In such cases, only need a driver or a reference voltage source to apply voltage signal.For example, by a driving circuit or reference voltage source the first public electrode is applied the first common electric voltage, so that the first common electric voltage that cooperates the first pixel electrode required the best when showing image to be provided.Suppose that the second required common electric voltage of the second pixel electrode is less than the first common electric voltage, the first public electrode and the second public electrode are electrically connected by divider resistance, so when driving circuit applies the first common electric voltage to the first public electrode, the first common electric voltage is voltage decreases after the process step-down of divider resistance, and the resistance size of divider resistance is set according to required the best the second common electric voltage of the second pixel electrode, thereby so that the second public electrode obtains the second required common electric voltage, so that the second common electric voltage that cooperates the second pixel electrode required the best when showing image to be provided.By the way, also can apply corresponding common electric voltage to the first public electrode and the second public electrode respectively, so that the best common electric voltage of the first pixel electrode and the second pixel electrode required cooperation all can obtain to show image the time.
In the above-described embodiment, discharge circuit is realized by a discharge capacity, is consulted Fig. 5, in another embodiment of display panels of the present invention, discharge circuit adopts two series capacitances to realize, the second basic structure is identical with the structure of the second substrate of above-mentioned embodiment.The discharge circuit of present embodiment comprises the first electric capacity 2046 and the second electric capacity 2045.Wherein, the input end of the 3rd switch 2045 connects the second pixel electrode, and an end of the first electric capacity 2046 is connected with the first pixel electrode 2041, the other end of the first electric capacity 2046 is connected with an end of the second electric capacity 2047, and the other end of the second electric capacity 2047 is connected with the 3rd public electrode 205 on the first substrate 20.The output terminal of the 3rd switch 2045 is connected between the first electric capacity 2046 and the second electric capacity 2047.
When driving the display panels demonstration, charging sweep trace 201 input scan signals are to control the first switch 2043 and second switch 2044 conductings, data line 203 is respectively by the first switch 2043 and 2044 pairs of the first pixel electrodes 2041 of second switch and the second pixel electrode 2042 input data signals, and this moment, the first pixel electrode 2041 was identical with the current potential of the second pixel electrode 2042.Type of drive for second substrate is identical with above-mentioned embodiment, does not give unnecessary details one by one herein.Subsequently, stop charging sweep trace 201 input scan signals, to discharge sweep trace 202 input scan signals controlling 2045 conductings of the 3rd switch, thereby so that the second pixel electrode 2042 be electrically connected with discharge circuit.The first electric capacity 2046 be connected electric capacity 2047 with the series connection mode be connected with the first pixel electrode 2041, when data line 203 provided voltage signal (being data-signal) to give the first pixel electrode 2041, this voltage signal was applied in the branch road that the first electric capacity 2046 and the second electric capacity 2047 consists of equally.According to the circuit theory of capacitances in series dividing potential drop as can be known, voltage between the first electric capacity 2046 and the second electric capacity 2047 is lower than the voltage that data line 203 is inputted, namely the voltage between the first electric capacity 2046 and the second electric capacity 2047 is lower than the voltage of the first pixel electrode 2041, also namely the voltage between the first electric capacity 2046 and the second electric capacity 2047 is lower than the voltage of the second pixel electrode 2041, thereby when 2045 conducting of the 3rd switch, the Partial charge of the second pixel electrode 2041 occurs to shift and so that the current potential of the second pixel electrode 2041 is lower than the current potential of the first pixel electrode 2041, so that the yawing moment of corresponding the first pixel electrode 2041 of difference and the liquid crystal molecule of the second pixel electrode 2042 is not identical, hang down the colour cast effect thereby reach thus.
In addition, the structure of present embodiment second substrate and above-mentioned embodiment are similar, namely comprise the first separate public electrode and the second public electrode, cooperate the first pixel electrode 2041 and the second pixel electrode 2042 required best common electric voltage separately when showing image to provide respectively, can further control the deflection of corresponding liquid crystal molecule according to the visual angle demand, thereby the low colour cast effect under further improving with great visual angle is conducive to reduce afterimage phenomenon simultaneously.
In other alternate embodiment, discharge circuit also can be a divider resistance, makes the input end of the 3rd switch connect the first pixel electrode, and output terminal connects an end of divider resistance, the other end ground connection of divider resistance.When the 3rd switch conduction, so that the first pixel electrode and divider resistance are electrically connected, the voltage of the first pixel electrode is reducing through after the dividing potential drop of divider resistance, thereby so that has non-vanishing voltage difference between the first pixel electrode and the second pixel electrode.
The present invention also provides an embodiment of liquid crystal indicator, comprises the display panels of above-mentioned arbitrary embodiment.
The above only is embodiments of the present invention; be not so limit claim of the present invention; every equivalent structure or equivalent flow process conversion that utilizes instructions of the present invention and accompanying drawing content to do; or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present invention.
Claims (10)
1. a display panels is characterized in that, comprises first substrate, second substrate and the liquid crystal layer between described first substrate and second substrate;
Described first substrate comprises the pixel cell that many charging sweep traces, many discharge sweep traces, many data lines and a plurality of ranks are arranged, the corresponding charging sweep trace of each described pixel cell, a discharge sweep trace and a data line;
Each described pixel cell comprises the first pixel electrode, the second pixel electrode and the first switch and the second switch that act on respectively described the first pixel electrode and the second pixel electrode, each described pixel cell also comprises the 3rd switch and discharge circuit, each described switch includes control end, input end and output terminal, described the first switch, the control end of second switch all connects with the charging sweep trace of corresponding this pixel cell, described the first switch, the input end of second switch all connects with the data line of corresponding this pixel cell, the output terminal of described the first switch is connected with described the first pixel electrode, the output terminal of described second switch is connected with described the second pixel electrode, the control end of described the 3rd switch is connected with described discharge sweep trace, the input end of described the 3rd switch is connected with described the first pixel electrode or the second pixel electrode, the output terminal of described the 3rd switch is connected with described discharge circuit, with when driving described the first pixel electrode and the second pixel electrode and show, make the non-vanishing predeterminated voltage of formation between described the first pixel electrode and the second pixel electrode poor;
Described second substrate comprises the first public electrode and the second public electrode, described the first public electrode is corresponding with described the first pixel electrode, so that the first common electric voltage to be provided, described the second public electrode is corresponding with described the second pixel electrode, so that the second common electric voltage to be provided.
2. display panels according to claim 1 is characterized in that,
Described the first public electrode and the second public electrode are separate, described the first public electrode comprises a plurality of first sub-public electrode, described the second public electrode comprises a plurality of second sub-public electrode, the described first sub-public electrode and the described second sub-public electrode are separate, the length direction of each described the first sub-public electrode is identical with the orientation of a plurality of described the first pixel electrode that continuous adjacent arranges, so that each described first sub-public electrode is corresponding with described the first pixel electrode of a row or column, cooperate described the first pixel electrode required first common electric voltage when showing image to provide, the length direction of each described the second sub-public electrode is identical with the orientation of a plurality of described the second pixel electrode that continuous adjacent arranges, so that each described second sub-public electrode is corresponding with described the second pixel electrode of a row or column, cooperate described the second pixel electrode required second common electric voltage when showing image to provide.
3. display panels according to claim 2 is characterized in that,
The zone of all the described first sub-public electrode peripheries, viewing area of corresponding described display panels in second substrate is electrically connected, all described second sub-public electrodes correspondence described in second substrate the zone of the periphery, viewing area of corresponding described display panels be electrically connected.
4. display panels according to claim 2 is characterized in that,
The described first sub-public electrode and the second sub-public electrode are strip.
5. display panels according to claim 1 is characterized in that,
Described display panels comprises the first common electrode drive device and the second common electrode drive device, described the first common electrode drive device is connected that with described the first public electrode described the first public electrode is inputted the first common electric voltage, and described the second common electrode drive device is connected that with described the second public electrode described the second public electrode is inputted the second common electric voltage.
6. display panels according to claim 1 is characterized in that,
Described first substrate also comprises one the 3rd public electrode, described discharge circuit comprises the first electric capacity and the second electric capacity, at the input end of described the 3rd switch when one of them pixel electrode in described the first pixel electrode, the second pixel electrode is connected, one end of described the first electric capacity is connected with the one other pixel electrode, the other end of described the first electric capacity is connected with an end of described the second electric capacity, the other end of described the second electric capacity connects the 3rd public electrode of described first substrate, and the output terminal of described the 3rd switch is connected between described the first electric capacity and the second electric capacity;
Wherein, to described charging sweep trace input scan signal to control described the first switch and second switch conducting, described data line input data signal is shown to drive described the first pixel electrode and the second pixel electrode, stop subsequently described charging sweep trace input scan signal, to described discharge sweep trace input scan signal controlling described the 3rd switch conduction, under the effect of described the first electric capacity and the second electric capacity to form predeterminated voltage between described the first pixel electrode and the second pixel electrode poor.
7. display panels according to claim 1 is characterized in that,
Described first substrate also comprises one the 3rd public electrode, described discharge circuit is a discharge capacity, the input end of described the 3rd switch is connected with described the first pixel electrode or the second pixel electrode, the output terminal of described the 3rd switch is connected with an end of described discharge capacity, and the other end of described discharge capacity connects the 3rd public electrode of described first substrate;
Wherein, to described charging sweep trace input scan signal to control described the first switch and second switch conducting, described data line input data signal is shown to drive described the first pixel electrode and the second pixel electrode, stop subsequently described charging sweep trace input scan signal, to control described the 3rd switch conduction, the size of controlling described discharge capacity is poor so that form predeterminated voltage between described the first pixel electrode and the second pixel electrode to described discharge sweep trace input scan signal.
8. display panels according to claim 1 is characterized in that,
Described charging sweep trace, discharge sweep trace, the first switch, second switch, the 3rd switch and discharge circuit are all between described the first pixel electrode and the second pixel electrode.
9. display panels according to claim 1 is characterized in that, comprising:
Described the first switch, second switch and the 3rd switch are thin film transistor (TFT), the control end of described switch corresponds to the grid of described thin film transistor (TFT), the input end of described switch corresponds to the source electrode of described thin film transistor (TFT), and the output terminal of described switch corresponds to the drain electrode of thin film transistor (TFT).
10. a liquid crystal indicator is characterized in that, comprises each described display panels of claim 1-9.
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| CN201310269534.XA CN103323990B (en) | 2013-06-28 | 2013-06-28 | A kind of display panels and liquid crystal indicator |
| PCT/CN2013/078649 WO2014205862A1 (en) | 2013-06-28 | 2013-07-02 | Liquid crystal display panel and liquid crystal display device |
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| CN112684641A (en) * | 2021-01-12 | 2021-04-20 | Tcl华星光电技术有限公司 | Display panel |
| CN113064299A (en) * | 2021-03-16 | 2021-07-02 | 深圳市华星光电半导体显示技术有限公司 | Liquid crystal display panel, preparation method thereof and liquid crystal display device |
| CN113189807A (en) * | 2021-05-14 | 2021-07-30 | 长沙惠科光电有限公司 | Array substrate, display device and driving method of array substrate |
| CN113189807B (en) * | 2021-05-14 | 2022-06-03 | 长沙惠科光电有限公司 | Array substrate, display device and driving method of array substrate |
| CN113406831A (en) * | 2021-06-21 | 2021-09-17 | 深圳市华星光电半导体显示技术有限公司 | Array substrate and display panel |
| CN115755472A (en) * | 2022-11-29 | 2023-03-07 | 惠科股份有限公司 | Array substrate, liquid crystal display panel, driving method and liquid crystal display device |
| CN115808818A (en) * | 2022-11-29 | 2023-03-17 | 惠科股份有限公司 | Liquid crystal display panel, liquid crystal display panel driving method and liquid crystal display device |
| CN115755472B (en) * | 2022-11-29 | 2023-11-14 | 惠科股份有限公司 | Array substrate, liquid crystal display panel, driving method and liquid crystal display device |
| CN115808818B (en) * | 2022-11-29 | 2024-01-26 | 惠科股份有限公司 | Liquid crystal display panel, liquid crystal display panel driving method and liquid crystal display device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103323990B (en) | 2016-02-03 |
| WO2014205862A1 (en) | 2014-12-31 |
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