CN102262326A - Side internally tangent liquid crystal display panel - Google Patents
Side internally tangent liquid crystal display panel Download PDFInfo
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- CN102262326A CN102262326A CN201110219421XA CN201110219421A CN102262326A CN 102262326 A CN102262326 A CN 102262326A CN 201110219421X A CN201110219421X A CN 201110219421XA CN 201110219421 A CN201110219421 A CN 201110219421A CN 102262326 A CN102262326 A CN 102262326A
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Abstract
A side internally tangent liquid crystal display panel comprises a color light filter substrate; a thin film transistor substrate which is arranged opposite to the color light filter substrate, and a liquid crystal layer is arranged between the color light filter substrate and the thin film transistor substrate; a plurality of scanning lines and a plurality of data lines which are crisscross distributed on the thin film transistor substrate; a plurality of pixels arranged among the crisscross distributed plurality of scanning lines and data lines, wherein the pixels comprises an edge pixel and a central pixel, and every pixel further comprises a plurality of common electrode bar, wherein the amount of the common electrode bar of the edge pixel is less than the amount of the common electrode bar of the central pixel.
Description
[technical field]
The invention relates to a kind of interior switch type liquid crystal display panel, especially, relate to a kind of interior switch type liquid crystal display panel of arranging by the peripheral common electrode bar of change of face, improvement produces peripheral light leak problem because of electric field influence.
[background technology]
In recent years, LCD (LCD) has obtained using widely and general approval because of its advantageous characteristic.LCD is a kind of by the liquid crystal that has liquid fluidity and optical characteristics is simultaneously applied the display that electric field changes its light transmittance, as a kind of new display that can substitute the cathode ray tube (CRT) display, because of its slim body, in light weight, power consumption is little, radiation is low enjoys high praise.
The LCD device has polytype according to the attribute of its liquid crystal and patterning.More specifically, the LCD device is divided into: twisted nematic (TN) type, and control liquid crystal and reverse by applying voltage; The multiple domain type obtains wide visual angle by a pixel is divided into a plurality of territories; Light compensated birefringence (OCB) type by forming compensate film on the outside surface of substrate, comes to compensate according to the direct of travel of the light phase change to light; Switch (IPS) type in the face, form parallel transverse electric field by on arbitrary substrate, forming two electrodes; And vertical orientation (VA) type, by using negative type liquid crystal and homeotropic alignment layer, make the plane of the longitudinal axis of liquid crystal molecule perpendicular to both alignment layers.
In these types, IPS type LCD device comprises: colored filter (CF) substrate, thin film transistor (TFT) (TFT) substrate and liquid crystal layer.At this moment, colored filter substrate and thin film transistor base plate and form liquid crystal layer toward each other between these two substrates.Colored filter substrate comprises: be used to prevent black matrix" (black matrix) layer that light leaks and be used to realize versicolor R, G and B filter layer.In addition, thin film transistor base plate comprises: most bar sweep traces and plurality of data lines are crisscross, most picture elements be positioned at those scannings and data line staggered between.Each picture element includes pixel electrode and common electrode.
Below, will be described below IPS type LCD device according to prior art.
Fig. 1 is the planimetric map according to the unit pixel of the IPS type LCD device of prior art.As shown in Figure 1, the IPS type LCD device according to prior art includes a tft array substrate.On tft array substrate, have: multi-strip scanning line 110, many data lines 120, common electrode wire 115, a plurality of common electrode 116, a plurality of pixel electrode 130 and a plurality of thin film transistor (TFT) TFT.At this moment, form multi-strip scanning line 110 in one direction with fixing spacing, and be formed generally perpendicularly many data lines 120, define a plurality of pixel regions thus with described sweep trace 110.Simultaneously, form common electrode wire 115 abreast with sweep trace.In addition, form common electrode 116 in each pixel region, wherein common electrode 116 is connected with common electrode wire 115 by second contact hole 119, so that receive the Vcom signal from external drive circuit.And common electrode includes a plurality of electrode strips 117.Pixel electrode 130 is arranged in the common electrode below and is insulated layer (figure does not illustrate) isolates, and forms transverse electric field with common electrode 116 in pixel region.In addition, the infall at sweep trace and data line forms a plurality of thin film transistor (TFT) TFT.Thin film transistor (TFT) is sent to pixel electrode 130 according to the sweep signal conducting of sweep trace with the data-signal with data line 120.When picture element when closing (off) state, liquid crystal molecule is arranged along the diagram alignment direction of picture element, when picture element when opening (on) state, produce transverse electric field between pixel electrode 130 and the common electrode 116, make liquid crystal molecule rotate, arrange perpendicular to the direction of an electric field of electrode strip 117 along diagram.
Yet, a plurality of picture elements of on TFT substrate 111, arranging as shown in Figure 2, except being positioned at the outermost two row picture elements of substrate, the picture element of other each row all can be subjected to the picture element electric field effects of its left and right sides, but be positioned at two row picture elements of outermost both sides, because have only the picture element electric field of a side that it is exerted an influence, the picture element that is row of the leftmost side has only the picture element on the right can influence this row picture element, a row picture element that is positioned at the rightmost side then has only the picture element on the left side can influence this row picture element, then arranging when making the dark attitude of liquid crystal is identical because the left and right sides all can exert an influence thereby other are positioned at the picture element of central authorities, the two row picture elements that are positioned at both sides on the limit then can produce liquid crystal and arrange unusually when dark attitude, that is boundary effect.As shown in Figure 3, be arranged in a picture element that forms by sweep trace 110 and data line 120 of the leftmost side, common electrode lines 115 and common electrode 116 are electrical connected, common electrode bar 117 is positioned on the pixel electrode 130, and unusual the arranging and light leak when having caused dark attitude of the liquid crystal that produces during near the dark attitude of liquid crystal between the common electrode bar 117 in left side at this picture element.
Therefore, under existing IPS picture element design, because the influence of boundary effect has caused arranging unusually of outermost two row picture element liquid crystal, make light leak under dark attitude, the width that solves this phenomenon usually and all be the black matrix" (Black matrix) by increasing TFT substrate offside blocks outermost two row picture elements.And such way can reduce the light transmittance of panel.Make the width of peripheral non-display area increase, obviously such design is the designer trends that do not meet present narrow frame.
[summary of the invention]
The present invention is for being applied to IPS display technique panel, avoid its panel periphery picture element zone liquid crystal to be subjected to the electric field influence of edge effect and the anglec of rotation, only do not rely on the alignment film inter-molecular attraction and arrange when dark attitude picture assembly drives down liquid crystal, the present invention carries out peripheral picture element the special design of common electrode, under the situation of the penetrance of avoiding losing panel light, utilize this electrode strip special pattern and arrange to force the rotation of liquid crystal angle to reach the design of avoiding the unusual rotation of liquid crystal.
Most bar sweep traces and most bar common electrode wire have been comprised on the TFT substrate.Plurality of data lines is arranged along the direction broken line of approximate vertical sweep trace.The sweep trace of most bars and the data line of most bars are arranged in length and breadth and have been formed most picture element, and each picture element links to each other with data line with sweep trace by the thin film transistor switch of the infall of sweep trace and data line.
Each picture element comprises a common electrode, wherein common electrode is that pectination has more comprised most common electrode bars, the direction of common electrode bar is parallel to data line, direction broken line along the approximate vertical sweep trace is arranged, common electrode electrically connects by connecting hole and common electrode wire, and inserts outside Vcom voltage by common electrode wire.Common electrode in each picture element also is connected with each other by illustrated connecting portion.Each picture element also comprises a pixel electrode, and this pixel electrode is positioned under the common electrode in picture element zone, and passes through an insulation course electrical isolation with common electrode.Pixel electrode in each picture element covers whole picture element zone, is connected with the TFT switch by contact hole, feeds the voltage signal of data line after the TFT switch opens, and forms the rotation that a transverse electric field drives liquid crystal between the electrode strip of common electrode.
The common electrode bar of edge picture element is less than the common electrode bar of central picture element among the present invention, and more specifically, the common electrode bar in the edge picture element lacks one than the common electrode bar of central picture element.Wherein the common electrode bar in the edge picture element has more comprised outermost two sub-electrode bars and other central electrode bar.
Therein among the embodiment, the impartial spacing arrangement of those central electrode bars and sub-electrode bar, the spacing of the electrode strip in the edge picture element is greater than the spacing of central picture element.
In another embodiment, those central electrode bars and sub-electrode bar are that non-equidistance is arranged, and be equidistant between the central electrode bar, and spacing is identical between the sub-electrode bar and between the primary and secondary electrode strip.
In another embodiment, connecting by most electrode branches between this sub-electrode bar, is equidistantly to arrange between the central electrode bar.
In a word, the present invention by change common electrode in the edge picture element arrange and intensity that shape changes electric field makes that the liquid crystal molecule in the liquid crystal molecule and central picture element is arranged in the edge picture element and reaches unanimity.
[description of drawings]
Fig. 1 is that IPS drives synoptic diagram
Fig. 2 edge picture element display abnormality synoptic diagram
Fig. 3 edge picture element boundary effect synoptic diagram
Fig. 4 first embodiment diagram
Fig. 5 second embodiment diagram
Fig. 6 the 3rd embodiment diagram
[embodiment]
For allowing the present invention become apparent, preferred embodiment cited below particularly is introduced in detail.The present invention's preferred embodiment all is equipped with corresponding shown by reference numeral.
Embodiment one, please refer to Fig. 4, comprised most bar sweep trace 410 along continuous straight runs on the TFT substrate and arranged, and most bars that also have of Xing Chenging are parallel to the common electrode wire 415 of sweep trace 410 simultaneously.Plurality of data lines 420 is arranged along the direction broken line of approximate vertical sweep trace.The sweep trace 410 of most bars and the data line 420 of most bars are arranged in length and breadth and have been formed most picture element 400, each picture element 400 includes a thin film transistor switch and it is arranged on the infall of sweep trace 410 and data line 420, and links to each other with data line 420 with sweep trace 410.
Each picture element 400 comprises a common electrode 416, wherein common electrode 416 has more comprised most common electrode bars 417 for pectination, the direction of common electrode bar 417 is parallel to data line 420, direction broken line along approximate vertical sweep trace 410 is arranged, common electrode 416 electrically connects by connecting hole 431 and common electrode wire 415, and inserts outside Vcom voltage by common electrode wire 415.Common electrode 416 in each picture element 400 also is connected with each other by illustrated connecting portion 408.Each picture element 400 also comprises a pixel electrode 430, and this pixel electrode 430 is positioned under the common electrode 416 in picture element zone, and and common electrode 416 by an insulation course (not illustrating among the figure) electrical isolation.Pixel electrode 430 in each picture element 400 covers whole picture element zone, be connected with the TFT switch by contact hole, after the TFT switch opens, feed the voltage signal of data line 420, and form the rotation that a transverse electric field drives liquid crystal between the electrode strip 417 of common electrode 416.
Because be arranged on the substrate beyond the outermost two column border picture element 400a of all picture elements, the central picture element 400b of other each row can be subjected to the picture element electric field effects of its left and right sides.For make liquid crystal molecule among the edge picture element 400a arrange and central picture element 400b in liquid crystal molecule arrange and reach unanimity, the common electrode bar 417 of edge picture element 400a is less than the common electrode bar 417 of central picture element 400b among the present invention, more specifically, the common electrode bar 417 among the edge picture element 400a lacks one than the common electrode bar 417 of central picture element 400b.Show among the figure that wherein the common electrode bar 417 among the edge picture element 400a has more comprised outermost several sub-electrode bar 417a and other central electrode bar 417b, such as two sub-electrode bars, but be not limited thereto, and in the present embodiment, the impartial spacing arrangement of those central electrode bar 417b and sub-electrode bar 417a, and the electrode strip that is less than central picture element 400b because of the electrode strip 417 among the edge picture element 400a, such as, comprise 9 common electrode bars among the picture element 400b of central authorities, and only comprised 8 strip electrode bars among the edge picture element 400a.Therefore when the electrode strip 417 among edge picture element 400a and the central picture element 400b was equidistant arrangement, the spacing of the electrode strip 417 among the edge picture element 400a was greater than the spacing of central picture element 400b.So, thus reaching liquid crystal molecule in the edge picture element 400a and the liquid crystal molecule in the central picture element 400b by the intensity that changes spacing between the electrode and influence electric field arranges and reaches unanimity.
Embodiment two, please refer to Fig. 5, comprised most bar sweep trace 510 along continuous straight runs on the TFT substrate and arranged, and most bars that also have of Xing Chenging are parallel to the common electrode wire 515 of sweep trace 510 simultaneously.Plurality of data lines 520 is arranged along the direction broken line of approximate vertical sweep trace.The sweep trace 510 of most bars and the data line 520 of most bars are arranged in length and breadth and have been formed most picture element 500, each picture element 500 includes a thin film transistor switch and it is arranged on the infall of sweep trace 510 and data line 520, and links to each other with data line 520 with sweep trace 510.
Each picture element 500 comprises a common electrode 516, wherein common electrode 516 has more comprised most common electrode bars 517 for pectination, the direction of common electrode bar 517 is parallel to data line, direction broken line along the approximate vertical sweep trace is arranged, common electrode electrically connects by connecting hole 531 and common electrode wire 515, and inserts outside Vcom voltage by common electrode wire.Common electrode in each picture element 500 also is connected with each other by illustrated connecting portion 518.Each picture element 500 also comprises a pixel electrode 530, and this pixel electrode 530 is positioned under the common electrode 516 in picture element zone, and and common electrode 516 by an insulation course (not illustrating among the figure) electrical isolation.Pixel electrode 530 in each picture element 500 covers whole picture element zone, be connected with the TFT switch by contact hole, after the TFT switch opens, feed the voltage signal of data line, and form the rotation that a transverse electric field drives liquid crystal between the electrode strip 517 of common electrode 516.
Because be arranged on the substrate beyond the outermost two column border picture element 500a of all picture elements, the central picture element 500b of other each row can be subjected to the picture element electric field effects of its left and right sides.For make liquid crystal molecule among the edge picture element 500a arrange and central picture element 500b in liquid crystal molecule arrange and reach unanimity, the common electrode bar 517 of edge picture element 500a is less than the common electrode bar 517 of central picture element 500b among the present invention, more specifically, the common electrode bar 517 among the edge picture element 500a lacks one than the common electrode bar 517 of central picture element 500b.Wherein the common electrode bar among the edge picture element 500a has more comprised outermost several sub-electrode bar 517a and other central electrode bar 517b, such as 2 sub-electrode bars, but be not limited thereto, and in the present embodiment, those central electrode bar 517b and sub-electrode bar 517a are that non-equidistance is arranged, wherein, be equidistantly to arrange between the central electrode bar, the spacing of common electrode bar 517 equates among this spacing and the central picture element 500b, spacing between this sub-electrode bar 517a and the spacing between the primary and secondary electrode equate, and the electrode strip that is less than central picture element 500b because of the electrode strip 517 among the edge picture element 500a, such as, comprise 9 common electrode bars among the picture element 500b of central authorities, and only comprised 8 strip electrode bars among the edge picture element 50a.Therefore when the central electrode bar 517b of edge picture element 500a and the central electrode bar 517b among the central picture element 500b were equidistant arrangement, the spacing of the sub-electrode bar 517a among the edge picture element 500a and the spacing between the primary and secondary electrode were then greater than the spacing between the electrode strip 516 among the central picture element 500b.So, thus reaching liquid crystal molecule in the edge picture element 500a and the liquid crystal molecule in the central picture element 500b by the intensity that changes spacing between the sub-electrode 517a and primary and secondary electrode separation and influence electric field arranges and reaches unanimity.
Embodiment three, please refer to Fig. 6, comprised most bar sweep trace 610 along continuous straight runs on the TFT substrate and arranged, and most bars that also have of Xing Chenging are parallel to the common electrode wire 615 of sweep trace 610 simultaneously.Plurality of data lines 620 is arranged along the direction broken line of approximate vertical sweep trace.The sweep trace 610 of most bars and the data line 620 of most bars are arranged in length and breadth and have been formed most picture element 600, and each picture element 600 includes a thin film transistor switch and its infall that is arranged on sweep trace 610 and data line 620 also links to each other with data line 620 with sweep trace 610.
Each picture element 600 comprises a common electrode 616, wherein common electrode 616 has more comprised most common electrode bars 617 for pectination, the direction of common electrode bar 617 is parallel to data line, direction broken line along the approximate vertical sweep trace is arranged, common electrode electrically connects by connecting hole 631 and common electrode wire 615, and inserts outside Vcom voltage by common electrode wire.Common electrode in each picture element 600 also is connected with each other by illustrated connecting portion 618.Each picture element 600 also comprises a pixel electrode 630, and this pixel electrode 630 is positioned under the common electrode 616 in picture element zone, and and common electrode 616 by an insulation course (not illustrating among the figure) electrical isolation.Pixel electrode 630 in each picture element 600 covers whole picture element zone, be connected with the TFT switch by contact hole, after the TFT switch opens, feed the voltage signal of data line, and form the rotation that a transverse electric field drives liquid crystal between the electrode strip 617 of common electrode 616.
Because be arranged on the substrate beyond the outermost two column border picture element 600a of all picture elements, the central picture element 600b of other each row can be subjected to the picture element electric field effects of its left and right sides.For make liquid crystal molecule among the edge picture element 600a arrange and central picture element 600b in liquid crystal molecule arrange and reach unanimity, the common electrode bar 617 of edge picture element 600a is less than the common electrode bar 617 of central picture element 600b among the present invention, more specifically, the common electrode bar 617 among the edge picture element 600a lacks one than the common electrode bar 617 of central picture element 600b.Wherein the common electrode bar among the edge picture element 600a has more comprised outermost 617a of electrode strip several times and other central electrode bar 617b, such as 2 sub-electrode bars, but be not limited thereto, and in the present embodiment, those central electrode bars 617b is that the spacing between the electrode strip 617 of equidistant arrangement and spacing and central picture element 600b is identical, and because of two sub-electrode bar 617a among the edge picture element 600a link to each other by most electrode branches 619, and those electrode branches are parallel to sweep trace.So, thus reaching liquid crystal molecule in the edge picture element 600a and the liquid crystal molecule in the central picture element 600b by the intensity that changes shape between the sub-electrode bar 617a and influence electric field arranges and reaches unanimity.
In a word, the present invention by change common electrode in the edge picture element 600a arrange and intensity that shape changes electric field makes that the liquid crystal molecule in the liquid crystal molecule and central picture element 600b is arranged in the edge picture element 600a and reaches unanimity.
Those of ordinary skill in the art should be appreciated that it still can make amendment to the technical scheme that aforementioned each embodiment put down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (9)
1. switch type liquid crystal display panel in the face comprises:
One colored filter substrate;
One thin film transistor base plate is oppositely arranged with colored filter substrate, and inserts and puts a liquid crystal layer in wherein;
Most bar sweep traces and plurality of data lines, this majority bar sweep trace and plurality of data lines are crisscross to be arranged on this thin film transistor base plate;
A most picture element, be arranged at crisscross of this majority bar sweep trace and plurality of data lines, wherein this picture element comprises edge picture element and central picture element, and each picture element more comprises most common electrode bars, and wherein the common electrode bar of this edge picture element is less than the common electrode bar of central picture element.
2. as claimed in claim 1 interior switch type liquid crystal display panel, described edge picture element are two row picture elements about outermost on this thin film transistor base plate, and this central authorities' picture element is between two column border picture elements.
3. as claimed in claim 1 interior switch type liquid crystal display panel, the common electrode bar of described edge picture element comprise most bar central electrode bars and most bar sub-electrode bar, and wherein the central electrode bar is positioned at the side near central picture element.
4. as claimed in claim 1 interior switch type liquid crystal display panel, the common electrode bar sum of described edge picture element lack one than the common electrode bar sum of central picture element at least.
5. as claimed in claim 4 interior switch type liquid crystal display panel, the central electrode bar of the picture element of described edge picture element and sub-electrode bar are equidistantly to arrange.
6. as claimed in claim 4 interior switch type liquid crystal display panel, the central electrode bar of described edge picture element and sub-electrode bar are that non-equidistance is arranged.
7. as claimed in claim 6 interior switch type liquid crystal display panel, described central electrode bar is equidistantly arranged, and less than with the spacing of sub-electrode bar.
8. as claimed in claim 6 interior switch type liquid crystal display panel, the sub-electrode bar of described edge picture element more comprise most electrode branches.
9. as claimed in claim 8 interior switch type liquid crystal display panel, described electrode branches is parallel to sweep trace.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110219421.XA CN102262326B (en) | 2011-08-02 | 2011-08-02 | Side internally tangent liquid crystal display panel |
| TW100137793A TWI479242B (en) | 2011-08-02 | 2011-10-18 | An in-plane switching type liquid crystal display panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110219421.XA CN102262326B (en) | 2011-08-02 | 2011-08-02 | Side internally tangent liquid crystal display panel |
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| CN102262326A true CN102262326A (en) | 2011-11-30 |
| CN102262326B CN102262326B (en) | 2014-08-13 |
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| CN201110219421.XA Active CN102262326B (en) | 2011-08-02 | 2011-08-02 | Side internally tangent liquid crystal display panel |
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| TW (1) | TWI479242B (en) |
Cited By (4)
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| CN104122713A (en) * | 2013-05-09 | 2014-10-29 | 深超光电（深圳）有限公司 | Manufacturing method of liquid crystal displayer array substrate |
| CN104765209A (en) * | 2015-04-07 | 2015-07-08 | 深圳市华星光电技术有限公司 | Array substrate and liquid crystal display equipment |
| WO2015192393A1 (en) * | 2014-06-19 | 2015-12-23 | 深圳市华星光电技术有限公司 | Pixel structure and liquid crystal display device |
| JP6380597B1 (en) * | 2017-04-12 | 2018-08-29 | Jnc株式会社 | Liquid crystal display element |
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| TWI499847B (en) * | 2013-06-28 | 2015-09-11 | Innolux Corp | Pixel array substrate and liquid crystal display |
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Also Published As
| Publication number | Publication date |
|---|---|
| TWI479242B (en) | 2015-04-01 |
| TW201307971A (en) | 2013-02-16 |
| CN102262326B (en) | 2014-08-13 |
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