CN105093656B - A kind of liquid crystal display panel and its driving method, liquid crystal display device - Google Patents

A kind of liquid crystal display panel and its driving method, liquid crystal display device Download PDF

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Publication number
CN105093656B
CN105093656B CN201510541274.6A CN201510541274A CN105093656B CN 105093656 B CN105093656 B CN 105093656B CN 201510541274 A CN201510541274 A CN 201510541274A CN 105093656 B CN105093656 B CN 105093656B
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China
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sub
pixel
area
liquid crystal
crystal display
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CN201510541274.6A
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Chinese (zh)
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CN105093656A (en
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方丽婷
张沼栋
沈柏平
吴玲
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厦门天马微电子有限公司
天马微电子股份有限公司
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Publication of CN105093656A publication Critical patent/CN105093656A/en
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Abstract

The present invention discloses a kind of liquid crystal display panel and its driving method, liquid crystal display device.The liquid crystal display panel includes: the first substrate being oppositely arranged and the second substrate;The first substrate surface opposite with the second substrate is equipped with the drive array that multiple sub-pixel driving units are formed;The second substrate surface opposite with the first substrate is equipped with the array of sub-pixels that multiple sub-pixels are formed, it include black matrix between each sub-pixel, the sub-pixel and the sub-pixel driving unit correspond, each sub-pixel includes: the first sub-pixel area, and the first sub-pixel area is colored sub-pixels area;Second sub-pixel area, second sub-pixel area are white sub-pixels area;The drive array controls the first sub-pixel area and second sub-pixel area respectively;Layer of liquid crystal molecule is set between the first substrate and the second substrate.

Description

A kind of liquid crystal display panel and its driving method, liquid crystal display device

Technical field

The present invention relates to field of display technology, in particular to a kind of liquid crystal display panel and its driving method and have should The liquid crystal display device of liquid crystal display panel.

Background technique

Now, consumer is just stepping up the display grade of portable mobile terminal, and high PPI (Pixel Per Inch, often Inch pixel) display the big hot spot designed and developed as display industry.The product of 800PPI or more has already appeared at this stage, But there are many problems for the display panel of high PPI product: manufacturing process requirement is high, leads to the display panel of the product of high PPI Manufacturing yield promotes difficulty, and cost is also difficult to decrease;Aperture opening ratio is smaller, and penetrance is relatively low;The width of black matrix is smaller, aligns color It is partially more serious.

In this context, (low PPI product makes it by pixel rendering by pixel order of rationally arranging for sub-pixel rendering Display effect with high PPI) technology comes into being, a shortcut is provided for the high technical market PPI.

Summary of the invention

For the defects in the prior art, the object of the present invention is to provide a kind of liquid crystal display panel and its driving methods. The liquid crystal display panel can promote the brightness of liquid crystal display panel in the case where guaranteeing color saturation.

A kind of liquid crystal display panel is provided according to an aspect of the present invention characterized by comprising be oppositely arranged One substrate and the second substrate;The first substrate surface opposite with the second substrate is equipped with multiple sub-pixel driving units The drive array of formation;The second substrate surface opposite with the first substrate is equipped with the sub- picture that multiple sub-pixels are formed Pixel array includes black matrix between each sub-pixel, and the sub-pixel and the sub-pixel driving unit correspond, often A sub-pixel includes: the first sub-pixel area, and the first sub-pixel area is colored sub-pixels area;Second sub-pixel area, institute Stating the second sub-pixel area is white sub-pixels area;The drive array controls the first sub-pixel area and described second respectively Sub-pixel area;Layer of liquid crystal molecule is set between the first substrate and the second substrate.

Optionally, in each sub-pixel, shared by the second sub-pixel area occupied area and the first sub-pixel area The ratio of area is less than or equal to 1/3.

Optionally, the shape of the sub-pixel is rectangle, and multiple sub-pixels are arranged in arrays.

Optionally, second sub-pixel area in each sub-pixel is respectively arranged at the first sub-pixel area Two sides.

Optionally, in same sub-pixel, positioned at the face of second sub-pixel area of the first sub-pixel area two sides Product is equal.

Optionally, in same sub-pixel, the area positioned at the second sub-pixel area of the first sub-pixel area side is big Area in the second sub-pixel area of its other side.

Optionally, the first sub-pixel area is in red sub-pixel area, green sub-pixels area and blue subpixels area It is any.

Optionally, the red sub-pixel area is equipped with Red lightscreening plate, and the green sub-pixels area is equipped with green color filter And the blue subpixels area is equipped with blue color filter.

Optionally, the first sub-pixel area of three sub-pixels of arbitrary neighborhood is red in every a line of the array of sub-pixels The permutation and combination in sub-pixels area, green sub-pixels area and blue subpixels area, and two sub- pictures of each column in every adjacent rows The first sub-pixel area of element is different.

Optionally, in the array of sub-pixels the first sub-pixel area of every row sub-pixel respectively with red sub-pixel area, green Sub-pixels area, blue subpixels area cycle arrangement, and in odd-numbered line the sub-pixel of same row the first sub-pixel area color phase Together, the first sub-pixel area color of the sub-pixel of same row is identical in even number line.

Optionally, the arrangement of subpixels of even number line is expert at relative to the arrangement of subpixels of odd-numbered line in the array of sub-pixels It offsets to one side on direction.

Optionally, the distance of the offset is less than or equal to the 3/4 of spacing distance of each sub-pixel on offset direction.

Optionally, in the array of sub-pixels, the sub-pixel of every three rows and four columns forms a display unit, and every lateral phase Two adjacent display units share two column sub-pixels, and two row sub-pixels are shared per two longitudinally adjacent display units.

Optionally, in the array of sub-pixels, the sub-pixel of every three rows and four columns forms a display unit, and every lateral phase Two adjacent display units share two column sub-pixels, and two row sub-pixels are shared per two longitudinally adjacent display units, wherein every In a display unit, the luminance distribution coefficient positioned at the sub-pixel of two column of centre is the brightness point of the two column sub-pixels positioned at two sides Twice of distribution coefficient.

Optionally, the drive array includes: a plurality of first grid polar curve being set on the first substrate, a plurality of data Line and the multiple sub-pixel driving units limited by the first grid polar curve and data line;The sub-pixel driving unit packet Include pixel electrode and first film transistor;The pixel electrode is corresponding with the position of the first sub-pixel area, and described first The grid of thin film transistor (TFT) is electrically connected with the first grid polar curve, and source electrode is electrically connected with the data line, drain electrode and the pixel Electrode electrical connection;A plurality of second gate line, multiple supplement electrodes and multiple second films being set on the first substrate are brilliant Body pipe;The supplement electrode is set between the pixel electrode, and corresponding with the position of the black matrix;Each described second The grid of thin film transistor (TFT) is electrically connected with the corresponding second gate line, and source electrode is electrically connected with the corresponding data line, Drain electrode is electrically connected with the corresponding supplement electrode;The first control circuit being electrically connected with the first grid polar curve, described first Control circuit is by controlling opening or closing for the first film transistor, to control the voltage of the pixel electrode;With institute The second control circuit of second gate line electrical connection is stated, the second control circuit is by controlling second thin film transistor (TFT) It opens or closes, to control the voltage of the supplement electrode.

Optionally, the first film transistor is constituted J-shaped with second thin film transistor (TFT);The first grid polar curve It insulate and is arranged in parallel with the second gate line.

Optionally, the liquid crystal display panel further includes detection module, and the detection module detects the entire liquid crystal Show the brightness of all the first sub-pixel areas on panel.

According to another aspect of the present invention, a kind of liquid crystal display device is also provided, which is characterized in that including above-mentioned liquid crystal Display panel.

According to a further aspect of the invention, a kind of driving method is also provided, it is special for above-mentioned liquid crystal display panel Sign is, includes the following steps: that the first sub-pixel area of the sub-pixel driving unit driving sub-pixel in drive array shines;Inspection Survey the brightness for all the first sub-pixel areas that module detects on the entire liquid crystal display panel;Sub-pixel in drive array drives Moving cell drives the second sub-pixel area of sub-pixel to shine.

Optionally, when the brightness and all green sub-pixels in all red sub-pixel areas on the liquid crystal display panel Area, all blue subpixels areas brightness it is equal when, the sub-pixel driving unit in drive array drives the second sub-pixel area hair Light.

Optionally, the driving voltage of second sub-pixel area is identical as the driving voltage of the first sub-pixel area.

Compared with the prior art, liquid crystal display panel and liquid crystal display device provided in an embodiment of the present invention, every height picture Element includes the first sub-pixel area and the second sub-pixel area, wherein the first sub-pixel area is colored sub-pixels area, the second sub-pixel area For white sub-pixels area, by the luminous increasing opening rate and penetrance in white sub-pixels area, and the arrangement for passing through sub-pixel And rendering, high PPI display effect is obtained with lower practical PPI design, reduces high PPI display panel manufacturing process difficulty, Save the cost.In addition, the setting in white sub-pixels area can also increase adjacent the distance between colored sub-pixels area, improve contraposition Colour cast.In addition, the present invention also controls the first sub-pixel area and by drive array that sub-pixel driving unit is formed respectively Two sub-pixel areas shine, and avoid the second sub-pixel area with the first sub-pixel area while the color saturation for shining and occurring is decayed sternly Weight promotes the brightness of liquid crystal display panel in the case where guaranteeing color saturation.

Detailed description of the invention

Upon reading the detailed description of non-limiting embodiments with reference to the following drawings, other feature of the invention, Objects and advantages will become more apparent upon:

Fig. 1 is the vertical section structure schematic diagram of liquid crystal display panel of the invention;

Fig. 2 is the pixel arrangement schematic diagram for the liquid crystal display panel that one embodiment of the present of invention provides;

Fig. 3 be another embodiment of the present invention provides liquid crystal display panel pixel arrangement schematic diagram;

Fig. 4 is the brightness between the display unit sub-pixel for the liquid crystal display panel that one embodiment of the present of invention provides Distribution coefficient relation schematic diagram;

Fig. 5 is a kind of structural schematic diagram for first substrate that one embodiment of the present of invention provides;

Fig. 6 is the structural schematic diagram of the sub-pixel driving unit in first substrate shown in fig. 5;

Fig. 7 is the partial enlarged view of sub-pixel driving unit shown in fig. 6;

Fig. 8 is the schematic diagram of the section structure of the sub-pixel driving unit in Fig. 7 along the direction aa ';

Fig. 9 is the schematic diagram of the section structure of the sub-pixel driving unit in Fig. 7 along the direction bb ';And

Figure 10 is the flow chart of the driving method for the liquid crystal display panel that one embodiment of the present of invention provides.

Specific embodiment

Technology contents of the invention are described further with reference to the accompanying drawings and examples.

Referring to Figure 1 and Fig. 2, which respectively show the vertical section structure schematic diagram of liquid crystal display panel of the invention and The pixel arrangement schematic diagram for the liquid crystal display panel that one embodiment of the present of invention provides.In the preferred embodiment of the present invention In, liquid crystal display panel includes: first substrate 1, the second substrate 2 and layer of liquid crystal molecule 3.

As shown in Figure 1, the second substrate 2 is oppositely arranged with first substrate 1.Layer of liquid crystal molecule 3 is set to first substrate 1 and Between two substrates 2.

The surface opposite with first substrate 1 of the second substrate 2 is equipped with the array of sub-pixels that multiple sub-pixels 21 are formed, each It include black matrix 22 between sub-pixel 21.Fig. 2 is by taking a part of array of sub-pixels (column of the five-element six) in liquid crystal display panel as an example It is illustrated.As shown in Fig. 2, each sub-pixel 21 includes: the first sub-pixel area 211 and the second sub-pixel area 212.

The first sub-pixel area 211 is colored sub-pixels area.As shown in Fig. 2, optionally, which refers to red Any one of sub-pixel area R, green sub-pixels area G and blue subpixels area B.In one embodiment of the invention, red The formation of sub-pixel area R, green sub-pixels area G and blue subpixels area B are by being provided with colo(u)r filter on second substrate 2 It realizes, specifically, the formation of the red sub-pixel area R in the second substrate 2 is the scheduled sub- picture of red on second substrate 2 Red lightscreening plate is arranged in the position of plain area R;The formation of green sub-pixels area G in the second substrate 2 is predetermined on second substrate 2 Green sub-pixels area G position be arranged green color filter;The formation of blue subpixels area B in the second substrate 2 is second Blue color filter is arranged in the position of scheduled blue subpixels area B on substrate 2.

Optionally, in every a line of the array of sub-pixels three sub-pixels 21 of arbitrary neighborhood the first sub-pixel area 211 be the permutation and combination of red sub-pixel area R, green sub-pixels area G and blue subpixels area B, and same in every adjacent rows The first sub-pixel area 211 of the two sub-pixels 21 of column is different.

Optionally, in array of sub-pixels the first sub-pixel area 211 of every row sub-pixel 21 respectively with red sub-pixel area R, Green sub-pixels area G, blue subpixels area B cycle arrangement, and odd-numbered line (is with the first row, the third line and the fifth line in Fig. 2 Example) in same row sub-pixel 21 211 color of the first sub-pixel area it is identical, even number line is (with the second row and fourth line in Fig. 2 For) in same row sub-pixel 21 211 color of the first sub-pixel area it is identical.The sub-pixel that the five-element six shown in Fig. 2 arrange In array, the first sub-pixel area 211 of the sub-pixel 21 of the first row of the array of sub-pixels, the third line and fifth line from a left side to The right side is successively with the arrangement mode cycle arrangement of red sub-pixel area R, green sub-pixels area G, blue subpixels area B;And institute The first sub-pixel area 211 for stating the second row of array of sub-pixels and the sub-pixel 21 of fourth line is successively with blue son from left to right The arrangement mode cycle arrangement of pixel region B, red sub-pixel area R, green sub-pixels area G.

Second sub-pixel area 212 is white sub-pixels area.The formation in white sub-pixels area can be pre- on second substrate 2 The position setting transparent filter in fixed white sub-pixels area or the mode for being not provided with any optical filter are realized.Optionally, often 211 occupied area of the first sub-pixel area in a sub-pixel 21 is equal.In order to not influence only driving the first sub-pixel area 211 The brightness of liquid crystal display panel when (the second sub-pixel area 211 does not drive), in each sub-pixel 21, the second sub-pixel area The ratio of 212 occupied areas and 211 occupied area of the first sub-pixel area is less than or equal to 1/3.

Further, in the preferred embodiment shown in figure 2, the shape of each sub-pixel 21 is rectangle, and multiple sub- pictures It is arranged in arrays between element 21.The first sub-pixel area 211 and the second sub-pixel area 212 are substantially rectangle.Each sub-pixel 21 In the second sub-pixel area 212 be respectively arranged at the two sides of the first sub-pixel area 211, i.e., the second sub- picture in each sub-pixel 21 Plain area 212 is divided into two parts by the first sub-pixel area 211.In same sub-pixel 21, it is located at 211 two sides of the first sub-pixel area The second sub-pixel area 212 area equation.In some change case, in same sub-pixel 21, it is located at the first sub-pixel area The area of second sub-pixel area 212 of 211 two sides be also possible to it is unequal, such as positioned at 211 side of the first sub-pixel area The area of second sub-pixel area 212 is greater than the area of the second sub-pixel area 212 of the other side.In addition, the shape of each sub-pixel 21 Shape can change, such as can be circle, triangle etc., the second sub-pixel area can be around setting in these change case Outside the first sub-pixel area, it will not be described here.

Further, refer to Fig. 3, it illustrates another embodiment of the present invention provides liquid crystal display panel son Pixel arrangement schematic diagram.In the embodiment shown in fig. 3, even number line (may refer to the second row in Fig. 3 in the array of sub-pixels And fourth line) sub-pixel 21 arrangement can be relative to odd-numbered line (may refer to the first row, the third line and the fifth line in Fig. 3) Sub-pixel 21 arrangement offset to one side in the row direction.Optionally, the distance of the offset is less than or equal to each sub-pixel 21 3/4 of spacing distance on offset direction makes the line of display so that sawtooth occurs in the picture for preventing liquid crystal display panel from showing Item is smoother, the picture of display is softer.

Further, in a preferred embodiment of the invention, in the array of sub-pixels of the liquid crystal display panel, every three row The sub-pixel of four column forms a display unit.And two column sub-pixels, every longitudinal direction are shared per two laterally adjacent display units Two adjacent display units share two row sub-pixels, so that array of sub-pixels be made to promote 1.5 times along the PPI of line direction.In Fig. 2 Shown in the five-element six arrange array of sub-pixels in, altogether include six display units 61,62,63,64,65 and 66.Such as Fig. 2 institute Show, between display unit 61 and 62, between display unit 63 and 64 and be to share the sub- picture between display unit 65 and 66 The sub-pixel 21 of third column and the 4th column in pixel array;Between display unit 61 and 63 and between display unit 62 and 64 For the sub-pixel 21 for sharing the second row and the third line in the array of sub-pixels;Between display unit 63 and 65 and display unit It is the sub-pixel 21 for sharing the third line and fourth line in the array of sub-pixels between 64 and 66.

In alternative embodiment of the invention, for a display unit of the sub-pixel formation of above-mentioned every three rows and four columns In, the luminance distribution coefficient positioned at the sub-pixel 21 of two column of centre is the luminance distribution coefficient of the two column sub-pixels 21 positioned at two sides Twice.Wherein, luminance distribution coefficient refers to that each sub-pixel is assigned into each display unit for sharing the sub-pixel The weight of brightness.Fig. 4 is referred to, it illustrates in the display unit of the liquid crystal display panel of one embodiment of the present of invention offer Luminance distribution Relationship of Coefficients schematic diagram between sub-pixel.It is illustrated by taking a display unit as an example in Fig. 4.As shown in figure 4, If the luminance distribution coefficient of the sub-pixel 21 of the first row of each display unit from top to bottom be respectively a, b, c, the 4th column The luminance distribution coefficient of sub-pixel 21 is from top to bottom also a, b, c, the brightness point of secondary series and tertial sub-pixel 21 respectively Distribution coefficient is from top to bottom respectively 2a, 2b, 2c.Wherein, luminance distribution coefficient a, b, c can be equal.Positioned at the liquid crystal display Each sub-pixel 21 of display unit (in addition to the display unit for being located at liquid crystal display panel edge) among panel is needed by six A display unit shares, by taking the tertial sub-pixel of the third line in Fig. 2 as an example, according to the brightness point of above-mentioned each display unit The relationship of distribution coefficient, brightness point of the sub-pixel in the luminance distribution coefficient in display unit 61 for 2c, in display unit 62 Distribution coefficient be c, the luminance distribution coefficient in display unit 63 be 2b, the luminance distribution coefficient in display unit 64 be b, Luminance distribution coefficient in display unit 65 is 2a, the luminance distribution coefficient in display unit 66 is a.If each sub-pixel 21 Maximum brightness be x, then: each sub-pixel is distributed in the total brightness 3a+3b+3c=x in six display units, therefore, often Relationship between luminance distribution coefficient a, b, c that a sub-pixel is distributed in six display units and its maximum brightness x meets a + b+c=x/3.

The surface opposite with the second substrate 2 of first substrate 1 is equipped with the drive array that multiple sub-pixel driving units are formed. Wherein, sub-pixel driving unit and sub-pixel 21 correspond, and the drive array can be controlled separately the first sub-pixel area 211 And second sub-pixel area 212.

The vertical view signal of the first substrate of liquid crystal display panel of the invention is shown please also refer to Fig. 5 and Fig. 6, Fig. 5 Figure;Fig. 6 is the partial enlarged view of Fig. 5.

As shown in figure 5, first substrate 1 can be the flexible base boards such as glass substrate or plastic base;It is set to the first base It a plurality of first grid polar curve 10, multiple data lines 11 on plate 1 and is limited by a plurality of first grid polar curve 10 and multiple data lines 11 Multiple sub-pixel driving units 12 out.The structure of the sub-pixel driving unit 12 can be one-domain structure, or double farmlands Structure etc., the present invention is defined not to this.

Wherein, sub-pixel driving unit 12 includes pixel electrode 120 and first film transistor 121.Pixel electrode 120 with The position of the first sub-pixel area 211 is corresponding.The grid of first film transistor 121 is electrically connected with first grid polar curve 10, source electrode with Data line 11 is electrically connected, and drain electrode is electrically connected with pixel electrode 120.

It further include a plurality of second gate line 13, a plurality of supplement electrode 14 and multiple second thin film transistor (TFT)s on first substrate 1 15, for the second thin film transistor (TFT) 15, grid is electrically connected with corresponding second gate line 13, source electrode and corresponding data line 11 electrical connections, drain electrode are electrically connected with corresponding supplement electrode 14.

Wherein, supplement electrode 14 is arranged between pixel electrode 120, corresponding with the position of black matrix 22 (reference can be made to figure 1), that is to say, that on the direction perpendicular to first substrate 1, the projection covering supplement electrode of black matrix 22 on first substrate 1 14 projection, the projection of the projection and data line 11 that supplement electrode 14 are at least partly overlapping.It is described at least partly overlapping including portion Divide overlapping and completely overlapping, wherein when supplement electrode 14 and data line 11 shift to install, the throwing of the partial region of supplement electrode 14 The projection of shadow and data line 11 is overlapping;When the projection of the projection and data line 11 that supplement electrode 14 is all overlapping, electrode 14 is supplemented Width on 10 extending direction of first grid polar curve (line direction in corresponding above-mentioned Fig. 2) is more than or less than data line 11 first Width on 10 extending direction of grid line, at this point, the projection of supplement electrode 14 is completely covered in the projection of data line 11, alternatively, mending The projection of data line 11 is completely covered in the projection of charging pole 14.

In the present embodiment, first grid polar curve 10 is electrically connected with first control circuit (not shown), the first control electricity Road direction first grid polar curve 10 inputs first control signal, due to first grid polar curve 10 and the grid of first film transistor 121 electricity Connection, therefore, the high level or low level of first control signal can control opening or closing for first film transistor 121.When When first control circuit controls the unlatching of first film transistor 121, the source electrode and drain electrode conducting of first film transistor 121, with Driving signal in the data line 11 of 121 source electrode of first film transistor electrical connection is transmitted to pixel electrode 120, is pixel electrode 120 provide the voltage of driving liquid crystal.

Second gate line 13 is electrically connected with second control circuit (not shown), and the second control circuit is to second grid Line 13 inputs second control signal, since second gate line 13 is electrically connected with the grid of the second thin film transistor (TFT) 15, second Control circuit can control opening or closing for the second thin film transistor (TFT) by second control signal.When second control circuit control the When two thin film transistor (TFT)s 15 are opened, the source electrode and drain electrode of the second thin film transistor (TFT) 15 is connected, and the driving signal in data line 11 is logical It crosses source electrode and drain electrode and is transmitted to supplement electrode 14, provide the voltage of driving liquid crystal for supplement electrode 14.

It optionally, can be by adjusting the input timing of first control signal and second control signal, respectively to pixel electricity Pole 120 and supplement electrode 14 provide control signal, to control 211 corresponding region of the first sub-pixel area and the second sub-pixel area respectively The overturning of the liquid crystal of 212 corresponding regions, and then can control shining for the first sub-pixel area 211 and the second sub-pixel area 212.

Certainly, public electrode 124 is also set up on first substrate 1, the public electrode 124 and multiple sub-pixel driving units 12 It is correspondingly arranged, provides common voltage for sub-pixel driving unit 12, and by between public electrode 124 and pixel electrode 120 Voltage difference carrys out the overturning of the liquid crystal between driving pixel electrode 120 and the first sub-pixel area 211.Equally, public electrode 124 and benefit Voltage difference between charging pole 14 can drive the overturning of the liquid crystal between supplement electrode 14 and the second sub-pixel area 212, to have The liquid crystal between pixel electrode 120 is utilized in effect, and aperture opening ratio and penetrance is effectively promoted.

In the present embodiment, since pixel electrode 120 and supplement electrode 14 are driven respectively by different control circuits, Therefore, the fluorescent lifetime of the first sub-pixel area 211 and the second sub-pixel area 212 can be controlled separately.In order to make the liquid crystal Show that panel lights the second sub-pixel in the case where the decaying of achromatization saturation degree or color saturation decay within an acceptable range Area 212, in alternative embodiment of the invention, the liquid crystal display panel further includes detection module (not shown), described Detection module is used to detect the brightness of all the first sub-pixel areas 211 on the entire liquid crystal display panel.It is predetermined when reaching Driving supplement electrode 14 makes the second sub-pixel area 212 shine in the case where condition.The present invention also provides a kind of preferred drives thus Dynamic method, reference can be made to Figure 10.

In order to save substrate space, first film transistor 121 and the second thin film transistor (TFT) 15 can be arranged to it is J-shaped, Meanwhile first grid polar curve 10 and second gate line 13 can insulate and be arranged in parallel.Based on this, first film transistor 121 The grid of grid and the second thin film transistor (TFT) 15 can be set in same layer, the source electrode and drain electrode of first film transistor 121 with The source electrode and drain electrode of second thin film transistor (TFT) 15 also can be set in same layer.

Optionally, the first film transistor 121 in the present embodiment is double gate thin-film transistor, the second thin film transistor (TFT) 15 For single gate thin-film transistors.It is the enlarged drawing of first film transistor 121 and the second thin film transistor (TFT) 15 with reference to Fig. 7, Fig. 7.The The drain electrode 1212 of one thin film transistor (TFT) 121 is electrically connected with pixel electrode 120, the first grid 1210 of first film transistor 121 It is electrically connected with second grid 1211 with first grid polar curve 10, optionally, first grid 1210 and second grid 1211 are respectively the Two parts that one grid line 10 is overlapped with active layer 123;The source electrode of first film transistor 121 and the second thin film transistor (TFT) 15 Source electrode be same source electrode, that is, source electrode 152, which is electrically connected with data line 11;The grid 150 of second thin film transistor (TFT) 15 It is electrically connected with second gate line 13, optionally, grid 150 is the part that second gate line 13 and active layer 123 overlap, and second is thin The drain electrode 151 of film transistor 15 is electrically connected with supplement electrode 14.

It is the schematic diagram of the section structure of Fig. 7 sub-pixel driving unit along the direction aa ', 1 table of first substrate with reference to Fig. 8, Fig. 8 Active layer 123, the gate dielectric layer 1230, second grid that face has buffer layer 1231 and is sequentially located on buffer layer 1231 1211, gate insulation layer 1214, the first insulating layer 1215, public electrode 124, second insulating layer 1216 and pixel electrode 120, In, pixel electrode 120 is electrically connected by the first via hole 1213 with drain electrode 1212, and drain electrode 1212 is located at the first insulating layer 1215 and grid Between insulating layer 1214, and drain electrode 1212 is electrically connected through gate insulation layer 1214 and gate dielectric layer 1230 with active layer 123, and first Insulating layer 1215 is for being isolated public electrode 124 and drain electrode 1212, and second insulating layer 1216 is for being isolated public electrode 124 and picture Plain electrode 120.

It is the schematic diagram of the section structure of Fig. 7 sub-pixel driving unit along the direction bb ', 1 table of first substrate with reference to Fig. 9, Fig. 9 Face has buffer layer 1231 and is sequentially located at the active layer 123 on 1231 surface of buffer layer, gate dielectric layer 1230, first grid 1210 and grid 150, gate insulation layer 1214, the first insulating layer 1215, public electrode 124, second insulating layer 1216 and supplement Electrode 14, wherein supplement electrode 14 is electrically connected by the second via hole 140 with drain electrode 151, and drain electrode 151 is located at the first insulating layer Between 1215 and gate insulation layer 1214, and it is electrically connected through gate insulation layer 1214 and gate dielectric layer 1230 with active layer 123, this Outside, also there is source electrode 152, which is electrically connected with data line 11, can between the first insulating layer 1215 and gate insulation layer 1214 Choosing, source electrode 152 is the part that data line 11 and active layer 123 overlap, and source electrode 152 runs through gate insulation layer 1214 and gate dielectric layer 1230 are electrically connected with active layer 123.

In the present embodiment, supplements electrode 14 and pixel electrode 120 is located on the same floor, certainly, the present invention is not limited to this, In other embodiments, supplement electrode 14 can be located at different layers with pixel electrode 120, as long as supplement electrode 14 and public electrode Voltage difference between 124 can drive the overturning of liquid crystal.

Specifically, supplement electrode 14 can be single strip shaped electric poles, or the strip shaped electric poles with double joint bifurcated, It can also be the single strip shaped electric poles with pierced pattern, the present invention is not defined the concrete shape of pierced pattern.

In the present embodiment, in order to improve the penetrance of pixel electrode, pixel electrode 120 be can be set to the picture for carving seam Plain electrode, with reference to Fig. 5 and Fig. 6, pixel electrode 120 includes the first strip shaped electric poles 1201, the second strip shaped electric poles 1202, third strip Electrode 1203, the first quarter between the first strip shaped electric poles 1201 and the second strip shaped electric poles 1202 stitch 1204, are located at Article 2 The second quarter between shape electrode 1202 and third strip shaped electric poles 1203 stitches 1205.

It should be noted that the structure of above-mentioned Fig. 5 to drive array shown in Fig. 9 is to realize the first son of control in the present invention A kind of mode that pixel region and the second sub-pixel area shine respectively, but it is not limited to this.In some embodiments, some can be right Other drive arrays that the first sub-pixel area and the second sub-pixel area are controlled respectively are in combination with the sub- picture in the present embodiment Plain arrangement architecture is achieved, and it will not be described here.

A kind of liquid crystal display device is additionally provided in another embodiment of the present invention, which includes upper The liquid crystal display panel of embodiment offer is provided.

Liquid crystal display panel and liquid crystal display device provided in this embodiment, each sub-pixel include the first sub-pixel area and Second sub-pixel area, wherein the first sub-pixel area is colored sub-pixels area, and the second sub-pixel area is white sub-pixels area, is passed through The luminous increasing opening rate and penetrance in white sub-pixels area, and pass through the arrangement and rendering of sub-pixel, with lower reality PPI design obtains high PPI display effect, reduces high PPI display panel manufacturing process difficulty, save the cost.In addition, white The setting of pixel region can also increase adjacent the distance between colored sub-pixels area, improve contraposition colour cast.In addition, the present invention is also logical The drive array for crossing the formation of sub-pixel driving unit shines to control the first sub-pixel area and the second sub-pixel area respectively, avoids the The color saturation that two sub-pixel areas shine with the first sub-pixel area simultaneously and occurred is decayed seriously, is guaranteeing color saturation In the case of promoted liquid crystal display panel brightness.

Referring to Figure 10, the flow chart of the driving method of liquid crystal display panel of the invention is shown.Specifically, this hair It is bright that a kind of driving method of liquid crystal display panel is also provided.The driving method of the liquid crystal display panel includes the following steps:

Step S100: the first sub-pixel area of the sub-pixel driving unit driving sub-pixel in drive array shines.At this In the embodiment of invention, driving the first sub-pixel area of all sub-pixels to shine is to control the first film by first control circuit After transistor is opened, the driving signal in data line is transmitted to pixel electrode, provides the voltage of driving liquid crystal for pixel electrode What mode was realized.

Step S200: detection module detects the brightness of all the first sub-pixel areas on entire liquid crystal display panel.

Step S300: the second sub-pixel area of the sub-pixel driving unit driving sub-pixel in drive array shines.It is optional Ground, brightness and all green sub-pixels area G, all sub- pictures of blue as all red sub-pixel area R on liquid crystal display panel When the brightness of plain area B is equal, drive array drives the second sub-pixel area to shine.Optionally, the driving voltage of the second sub-pixel area It is identical as the driving voltage of the first sub-pixel area.

The driving method of above-mentioned liquid crystal display panel can make the case where decaying of liquid crystal display panel achromatization saturation degree The lower brightness for promoting liquid crystal display panel.

Although the present invention is disclosed as above with preferred embodiment, it is not intended to limit the invention.Belonging to the present invention Those skilled in the art, without departing from the spirit and scope of the present invention, when various change and modification can be made.Therefore, Protection scope of the present invention is subject to the range defined depending on claims.

Claims (20)

1. a kind of liquid crystal display panel characterized by comprising
The first substrate and the second substrate being oppositely arranged;
The first substrate surface opposite with the second substrate is equipped with the driving battle array that multiple sub-pixel driving units are formed Column;
The second substrate surface opposite with the first substrate is equipped with the array of sub-pixels that multiple sub-pixels are formed, each It include black matrix between the sub-pixel, the sub-pixel and the sub-pixel driving unit correspond, each sub- picture Element includes:
The first sub-pixel area, the first sub-pixel area are colored sub-pixels area;
Second sub-pixel area, second sub-pixel area are white sub-pixels area;
Wherein, second sub-pixel area in each sub-pixel is respectively arranged at the two sides of the first sub-pixel area
The drive array controls the first sub-pixel area and second sub-pixel area respectively;
Layer of liquid crystal molecule is set between the first substrate and the second substrate.
2. liquid crystal display panel as described in claim 1, which is characterized in that in each sub-pixel, the second sub-pixel The ratio of area's occupied area and the first sub-pixel area occupied area is less than or equal to 1/3.
3. liquid crystal display panel as described in claim 1, which is characterized in that the shape of the sub-pixel is rectangle, and multiple The sub-pixel is arranged in arrays.
4. liquid crystal display panel as described in claim 1, which is characterized in that in same sub-pixel, be located at first son The area equation of second sub-pixel area of pixel region two sides.
5. liquid crystal display panel as described in claim 1, which is characterized in that in same sub-pixel, be located at first son The area of second sub-pixel area of pixel region side is greater than the area of the second sub-pixel area of its other side.
6. liquid crystal display panel as described in claim 1, which is characterized in that the first sub-pixel area is red sub-pixel Any one of area, green sub-pixels area and blue subpixels area.
7. liquid crystal display panel as claimed in claim 6, which is characterized in that the red sub-pixel area is equipped with red filter Piece, the green sub-pixels area is equipped with green color filter and the blue subpixels area is equipped with blue color filter.
8. liquid crystal display panel as claimed in claim 6, which is characterized in that any phase in every a line of the array of sub-pixels The first sub-pixel area of three adjacent sub-pixels is the arrangement group in red sub-pixel area, green sub-pixels area and blue subpixels area Close, and in every adjacent rows same row two sub-pixels the first sub-pixel area it is different.
9. liquid crystal display panel as claimed in claim 8, which is characterized in that the of every row sub-pixel in the array of sub-pixels One sub-pixel area is and same in odd-numbered line respectively with red sub-pixel area, green sub-pixels area, blue subpixels area cycle arrangement The first sub-pixel area color of the sub-pixel of column is identical, the first sub-pixel area color phase of the sub-pixel of same row in even number line Together.
10. liquid crystal display panel as described in claim 1, which is characterized in that the sub- picture of even number line in the array of sub-pixels Element arrangement offsets to one side in the row direction relative to the arrangement of subpixels of odd-numbered line.
11. liquid crystal display panel as claimed in claim 10, which is characterized in that the distance of the offset is less than or equal to every height The 3/4 of spacing distance of the pixel on offset direction.
12. liquid crystal display panel as claimed in claim 8, which is characterized in that in the array of sub-pixels, every three rows and four columns Sub-pixel forms a display unit, and two column sub-pixels are shared per two laterally adjacent display units, per longitudinally adjacent Two display units share two row sub-pixels.
13. liquid crystal display panel as claimed in claim 9, which is characterized in that in the array of sub-pixels, every three rows and four columns Sub-pixel forms a display unit, and two column sub-pixels are shared per two laterally adjacent display units, per longitudinally adjacent Two display units share two row sub-pixels, wherein in each display unit, positioned at the luminance distribution of the sub-pixel of two column of centre Coefficient is twice of the luminance distribution coefficient of the two column sub-pixels positioned at two sides.
14. the liquid crystal display panel as described in any one of claims 1 to 13, which is characterized in that the drive array includes:
It is set to a plurality of first grid polar curve on the first substrate, multiple data lines and by the first grid polar curve and data Multiple sub-pixel driving units that line limits;The sub-pixel driving unit includes pixel electrode and first film transistor; The pixel electrode is corresponding with the position of the first sub-pixel area, the grid of the first film transistor and the first grid Polar curve electrical connection, source electrode are electrically connected with the data line, and drain electrode is electrically connected with the pixel electrode;
A plurality of second gate line, multiple supplement electrodes and multiple second thin film transistor (TFT)s being set on the first substrate;Institute It states supplement electrode to be set between the pixel electrode, and corresponding with the position of the black matrix;Each second film is brilliant The grid of body pipe is electrically connected with the corresponding second gate line, and source electrode is electrically connected with the corresponding data line, drain electrode and The corresponding supplement electrode electrical connection;
The first control circuit being electrically connected with the first grid polar curve, the first control circuit is by controlling the first film Transistor opens or closes, to control the voltage of the pixel electrode;
The second control circuit being electrically connected with the second gate line, the second control circuit is by controlling second film Transistor opens or closes, to control the voltage of the supplement electrode.
15. liquid crystal display panel as claimed in claim 14, which is characterized in that the first film transistor and described second Thin film transistor (TFT) constitutes J-shaped;The first grid polar curve insulate and is arranged in parallel with the second gate line.
16. liquid crystal display panel as described in claim 1, which is characterized in that the liquid crystal display panel further includes detection mould Block, the detection module detect the brightness of all the first sub-pixel areas on the entire liquid crystal display panel.
17. a kind of liquid crystal display device, which is characterized in that including the liquid crystal display as described in any one of claims 1 to 16 Panel.
18. a kind of driving method is used for liquid crystal display panel as described in claim 1, which is characterized in that including walking as follows It is rapid:
The first sub-pixel area of sub-pixel driving unit driving sub-pixel in drive array shines;
Detection module detects the brightness of all the first sub-pixel areas on the entire liquid crystal display panel;
Second sub-pixel area of the sub-pixel driving unit driving sub-pixel in drive array shines.
19. driving method as claimed in claim 18, which is characterized in that when all red sons on the liquid crystal display panel Sub- picture when the brightness of pixel region is equal with the brightness in all green sub-pixels areas, all blue subpixels areas, in drive array Plain driving unit drives the second sub-pixel area to shine.
20. driving method as claimed in claim 18, which is characterized in that the driving voltage of second sub-pixel area with it is described The driving voltage of the first sub-pixel area is identical.
CN201510541274.6A 2015-08-28 2015-08-28 A kind of liquid crystal display panel and its driving method, liquid crystal display device CN105093656B (en)

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CN106597772A (en) * 2017-02-06 2017-04-26 京东方科技集团股份有限公司 Display substrate and display device
CN107450241A (en) * 2017-09-22 2017-12-08 惠科股份有限公司 Display panel and a liquid crystal display
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