CN107145020B - Vertical orientation type liquid crystal display panel based on visual angle compensation driving mode - Google Patents
Vertical orientation type liquid crystal display panel based on visual angle compensation driving mode Download PDFInfo
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- G02F1/139—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 characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering based on orientation effects in which the liquid crystal remains transparent
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Abstract
The embodiment of the invention discloses a vertical orientation type liquid crystal display panel based on a visual angle compensation driving mode, which comprises: a plurality of scan lines extending in a row direction; a plurality of data lines extending in a column direction; the pixel regions are defined by the data lines and the scanning lines in a crossed mode, pixels are arranged in each pixel region, and each pixel comprises a pixel electrode; each pixel forms M regions, wherein M is a positive integer; two adjacent pixels of any row of pixels are divided into a main pixel and a sub-pixel, and the gray scale of the main pixel is larger than that of the sub-pixel; in any row of pixels, the polarities of all the main pixels are the same, the polarities of all the sub-pixels are the same, and the polarities of the main pixels and the sub-pixels are different; wherein Cpd1/Ctotal1 of the primary pixel is greater than Cpd2/Ctotal2 of the secondary pixel. The invention has the advantage of improving horizontal crosstalk.
Description
Technical Field
The invention relates to the technical field of display, in particular to a vertical alignment type liquid crystal display panel based on a visual angle compensation driving mode.
Background
With the push-out of large-sized lcd panels, the lcd panels must have wide viewing angle characteristics to meet the requirements of use. Therefore, a multi-domain vertical alignment (MVA) lcd panel with wide viewing angle has become a mainstream product of a large-sized flat panel display panel.
An array substrate (array substrate) of a vertical alignment liquid crystal display panel has patterned pixel electrodes, and a color filter substrate (CF substrate) usually includes a plurality of bumps correspondingly disposed at the center of the pixel electrodes. The inversion of the liquid crystal molecules is induced by a fringe electric field effect (fringe electric field effect) of the pixel electrode and the geometry of the bump, so that the negative-type liquid crystal molecules fall down when a voltage is applied to the pixel, and different display regions (domains) are formed according to the difference in the falling direction of the liquid crystal molecules to obtain the characteristic of a wide viewing angle.
In the current pixel design, there are two main types, one is a quad-partition (4-domain) and the other is an octant-partition (8-domain), and the two pixel structures have advantages and disadvantages, wherein the quad-partition pixels have relatively high aperture ratio but have relatively poor viewing angle characteristics compared with the octant pixels, and the octant pixels have relatively good viewing angle characteristics but have much lower aperture ratio compared with the quarter-partition pixels, in order to obtain higher pixel aperture ratio and relatively good viewing angle characteristics, the pixel structure adopting the quad-partition is proposed, and simultaneously the viewing angle characteristics are improved by matching with the driving manner of View Angle Compensation (VAC), and the structural characteristics of main pixels (main-pixel) and sub-pixels (sub-pixel) in the octant pixels are achieved by the adjacent two quarter-partition pixel groups, so as to achieve the viewing angle characteristics similar to the octant pixels, one of the driving modes of VAC is shown in fig. 1, in which signs represent different polarities of pixels, and pixels distinguished by two different colors correspond to signals of high and low gray scales, where a pixel at a high gray scale signal corresponds to a main pixel (main-pixel)121, and a pixel at a low gray scale signal corresponds to a sub-pixel (sub-pixel) 122. Based on the driving method like this, when the value of the parasitic capacitance Cpd between the pixel electrode and the Data line (Data line) adjacent to the pixel electrode and not charging the pixel is small, the Coupling Effect (Coupling Effect) caused by the difference of the Data line signals is negligible, and has no great influence on the display screen, but in order to further increase the aperture ratio of the pixel, the pixel electrode is expanded towards the Data line direction, so that the capacitance value of the parasitic capacitance Cpd is increased, at this time, the Coupling Effect is not negligible, and this driving method of the high and low gray levels of the adjacent pixels will affect the display screen, and for the driving method shown in fig. one, the large parasitic capacitance Cpd will cause the occurrence of horizontal crosstalk, and the phenomenon is shown in fig. 2.
Specifically, it can be understood that the coupling effect due to the signal difference of the data lines is that a voltage variation Δ V | Vdata-Vcom | Cpd/Ctotal, where Vdata is a voltage on the data line adjacent to the pixel electrode without charging the pixel, Vcom is a voltage on the common electrode, Cpd is a parasitic capacitance between the pixel electrode and the data line adjacent thereto without charging the pixel, Ctotal is a total parasitic capacitance of the pixel electrode, it can be seen that, when Cpd/Ctotal is constant, the value of Δ V depends on the magnitude of Vdata, the voltage variation Δ V of the high gray-scale pixel is relatively small and the voltage variation Δ V of the low gray-scale pixel is relatively large for the VAC driving manner, and the polarities of the high gray-scale or low gray-scale pixels on the same voltage horizontal line are the same for the liquid crystal display panel shown in fig. 1, thereby causing the voltage variation Δ V of the high and low gray-scale pixel to be not completely cancelled, which in turn causes differences in coupling effects among the overall horizontally adjacent pixels, which in turn causes horizontal crosstalk to occur.
Disclosure of Invention
An embodiment of the present invention is directed to a vertical alignment liquid crystal display panel with viewing angle compensation. Horizontal crosstalk can be improved.
In order to solve the above technical problem, an embodiment of the present invention provides a vertical alignment type liquid crystal display panel with viewing angle compensation, including:
a plurality of scan lines extending in a row direction;
a plurality of data lines extending in a column direction;
the pixel regions are defined by the data lines and the scanning lines in a crossed mode, pixels are arranged in each pixel region, and each pixel comprises a pixel electrode; each pixel forms M regions, wherein M is a positive integer; two adjacent pixels of any row of pixels are divided into a main pixel and a sub-pixel, and the gray scale of the main pixel is larger than that of the sub-pixel; in any row of pixels, the polarities of all the main pixels are the same, the polarities of all the sub-pixels are the same, and the polarities of the main pixels and the sub-pixels are different; wherein the content of the first and second substances,
the main pixel Cpd1/Ctotal1 is greater than the sub pixel Cpd2/Ctotal2, wherein the main parasitic capacitance Cpd1 is a parasitic capacitance between a main pixel electrode of the main pixel and a data line adjacent to the main pixel electrode and not charging the main pixel, the main total parasitic capacitance Ctotal1 is a total parasitic capacitance of the main pixel electrode, the sub parasitic capacitance Cpd2 is a parasitic capacitance between a sub pixel electrode of the sub pixel and a data line adjacent to the sub pixel electrode and not charging the sub pixel electrode, and the sub total parasitic capacitance Ctotal2 is a total parasitic capacitance of the sub pixel electrode.
In an embodiment of the present invention, the primary parasitic capacitance Cpd1 is larger than the secondary parasitic capacitance Cpd2 to reduce the occurrence of horizontal crosstalk.
In an embodiment of the invention, an overlapping width of a projection of the main pixel electrode and a data line adjacent thereto and not charging the main pixel on a horizontal plane is larger than an overlapping width of a projection of the sub pixel electrode and a data line adjacent thereto and not charging the sub pixel on a horizontal plane.
In an embodiment of the present invention, an overlapping width of a projection of the main pixel electrode and the data line adjacent thereto and not charging the main pixel on a horizontal plane is 1 μm to 6 μm larger than an overlapping width of a projection of the sub pixel electrode and the data line adjacent thereto and not charging the sub pixel on a horizontal plane.
In an embodiment of the invention, the overlapping width of the projection of the sub-pixel electrode and the data line adjacent to the sub-pixel electrode and not charging the sub-pixel on the horizontal plane is-3 μm to 6 μm.
In an embodiment of the invention, the overlapping width of the projection of the main pixel electrode and the data line adjacent thereto and not charging the main pixel on the horizontal plane is 1-15 μm.
In an embodiment of the present invention, the width of the main pixel electrode in the row direction is greater than the width of the sub pixel electrode in the row direction; alternatively, the width of a portion corresponding to the data line adjacent to the main pixel and not charging the main pixel and the main pixel is larger than the width of a portion corresponding to the data line adjacent to the sub pixel and not charging the sub pixel and the sub pixel.
In an embodiment of the present invention, M is a positive integer less than or equal to 4.
In an embodiment of the invention, any two adjacent pixels in the column direction are the main pixel and the sub-pixel.
In an embodiment of the present invention, M regions are formed by protrusions or/and gaps per pixel.
The embodiment of the invention has the following beneficial effects:
the vertical orientation type liquid crystal display panel with the visual angle compensation comprises a plurality of pixel areas, each pixel forms M areas, two adjacent pixels of any row of pixels are divided into a main pixel and a sub-pixel, and the gray scale of the main pixel is larger than that of the sub-pixel; in any row of pixels, the polarities of all the main pixels are the same, the polarities of all the sub-pixels are the same, and the polarities of the main pixels and the sub-pixels are different; moreover, Cpd1/Ctotal1 of the main pixel is larger than Cpd2/Ctotal2 of the sub-pixel, so that the difference between the voltage variation of the main pixel and the voltage variation of the sub-pixel can be reduced, and the problem that the voltage variation Δ V of the high-low gray-scale pixel cannot be offset in the prior art can be improved, so that the coupling effect difference of the whole horizontal adjacent pixels is smaller, and the probability of occurrence of horizontal crosstalk is lower.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic diagram of a prior art LCD panel with a viewing angle compensation driving method;
FIG. 2 is a prior art schematic showing the occurrence of horizontal crosstalk;
FIG. 3 is a schematic diagram of a liquid crystal display panel with a viewing angle compensation driving method according to an embodiment of the present invention;
FIG. 4a is a schematic diagram of the foremost primary pixel and the adjacent secondary pixels in the third row of pixels in FIG. 3;
FIG. 4b is a cross-sectional view of the square area in FIG. 4 a;
FIG. 5a is a schematic diagram of the foremost primary pixel and adjacent secondary pixels in the third row of pixels in FIG. 3;
FIG. 5b is a cross-sectional view of the square area in FIG. 5 a;
FIG. 6 is a schematic diagram of a liquid crystal display panel with a viewing angle compensation driving method according to another embodiment of the present invention;
reference numbers of the drawings:
200-pixel area; 210-a thin film transistor; 220-pixels; 121. 221-a main pixel; 122. 222-sub-pixel; 223-main pixel electrode; 224-sub-pixel electrodes; SL1, SL2, SL3, … -scan lines; DL1, DL2, DL3, … -data lines; d1-first paragraph; d2-second segment; d3-linker.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The terms "comprising" and "having," and any variations thereof, as appearing in the specification, claims and drawings of this application, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus. Furthermore, the terms "first," "second," and "third," etc. are used to distinguish between different objects and are not used to describe a particular order.
An embodiment of the present invention provides a Vertical Alignment liquid crystal display panel with viewing angle compensation, wherein the Vertical Alignment liquid crystal display panel is a liquid crystal display panel of an MVA (Multi-domain Vertical Alignment) mode to improve viewing angle characteristics, and the liquid crystal display panel is equipped with a Viewing Angle Compensation (VAC) driving manner to further improve viewing angle characteristics, as shown in fig. 3, and the liquid crystal display panel includes a plurality of scan lines SL1, SL2, SL3, … extending along a row direction, a plurality of data lines DL1, DL2, DL3, … extending along a column direction, and a plurality of pixel regions 200.
In the present embodiment, the plurality of scan lines SL1, SL2, SL3, … are parallel to each other and extend in the row direction, respectively, and the scan lines SL1, SL2, SL3, … transmit a turn-on voltage for turning on the thin film transistor 210 and a turn-off voltage for turning off the thin film transistor 210.
In this embodiment, the data lines DL1, DL2, DL3, … are parallel to each other and extend along the column direction, the extending direction of the data lines DL1, DL2, DL3, … is perpendicular to the extending direction of the scan lines, and the data lines DL1, DL2, DL3, … are arranged to intersect with the scan lines SL1, SL2, SL3, …. In the present embodiment, each data line is divided into a plurality of segments including a first segment D1 corresponding to the later-mentioned main pixel 221, a second segment D2 corresponding to the later-mentioned sub-pixel 222, and a connecting segment D3, the connecting segment D3 is used for connecting the first segment D1 and the second segment D2, the first segment D1 and the first segment D1, the second segment D2 and the second segment D2, and the first segment D1 and the second segment D2 are referred to the pixels 220 in the left column of the corresponding data line.
In the present embodiment, a plurality of pixel regions 200 are defined by the data lines DL1, DL2, DL3, … intersecting the scan lines SL1, SL2, SL3, …, and each pixel region 200 is provided with a pixel 220 and a thin film transistor 210, wherein a gate of the thin film transistor 210 is electrically connected to the corresponding scan line, a source thereof is electrically connected to the corresponding data line, and a drain thereof is electrically connected to the corresponding pixel 220. In the present embodiment, the pixel 220 includes a pixel electrode, a common electrode, and a liquid crystal layer interposed therebetween. Each pixel 220 forms M regions (domains), where M is a positive integer, for example, each pixel 220 forms 2 regions, 3 regions, 4 regions, 5 regions, 6 regions, etc., preferably, M is a positive integer less than or equal to 4, the M regions are realized by forming protrusions (protrus) and slits (slit) on the pixel electrode and/or the common electrode, and after the pixel 220 is charged, the liquid crystal of the liquid crystal layer of the same pixel 220 is tilted in M directions.
In order to obtain a higher aperture ratio of the pixels 220 and a relatively good viewing angle characteristic, in the embodiment, the pixels 220 adopt a pixel 220 structure of M regions (domains), and a Viewing Angle Compensation (VAC) driving mode is simultaneously used to improve the viewing angle characteristic, so that the structural characteristics of a main pixel 221(main-pixel) and a sub-pixel 222(sub-pixel) in 2 × M region pixels 220 are achieved by combining two adjacent pixels 220 having M regions, thereby achieving the viewing angle characteristic similar to the 2 × M region pixels 220. Specifically, in the present embodiment, two adjacent pixels 220 of any row of pixels 220 are divided into a main pixel 221 and a sub-pixel 222, the gray scale of the main pixel 221 is greater than the gray scale of the sub-pixel 222, specifically, the gray scale of the main pixel 221 is a high gray scale, and the gray scale of the sub-pixel 222 is a low gray scale, where the high gray scale and the low gray scale are intermediate gray scales, for example, when the liquid crystal display panel is divided into 256 gray scales, which are respectively 0-255 gray scales, and the intermediate gray scale is generally 127 gray scales, and the required gray scale is realized by matching the main pixel 221 displaying the high gray scale and the sub-pixel 222 displaying the low gray scale. In the present embodiment, in any row of the pixels 220, all the main pixels 221 have the same polarity, for example, all the main pixels 221 of the row in a frame (frame) are in + polarity (see the third row of pixels in fig. 3), and all the sub-pixels 222 have the same polarity, for example, all the sub-pixels 222 of the row in a frame (frame) are in-polarity (see the third row of pixels in fig. 3). However, the present invention is not limited thereto, and in other embodiments of the present invention, the polarities of the primary and secondary pixels in different rows may be different, for example, the polarity of all primary pixels in the first row of pixels in a frame is + the polarity of all secondary pixels is-, the polarity of all primary pixels in the second row of pixels is-the polarity of all secondary pixels is + …. In this embodiment, the polarities of the main pixels 221 and the sub-pixels 222 in the same row of pixels 220 are different, for example, the polarities of all the main pixels 221 in the same row are + and the polarities of all the sub-pixels 222 in the same row are-, and vice versa.
In order to improve the problem that in the prior art, the voltage variation Δ V of the high-low gray-scale pixels cannot be completely offset, so that the coupling effect of the whole horizontal adjacent pixels is different, and further the occurrence of horizontal crosstalk is caused. In the present embodiment, the data voltage Vdata is a charging voltage on a data line adjacent to the pixel electrode and not charging the pixel 220, the common voltage Vcom is a voltage on a common electrode, Cpd is a parasitic capacitance between the pixel electrode and a data line adjacent thereto and not charging the pixel electrode, and the total parasitic capacitance Ctotal is a total parasitic capacitance of the pixel electrode, which includes a parasitic capacitance between the pixel electrode and the data line, a parasitic capacitance between the pixel electrode and the scan line, and the like, according to a formula Δ V ═ Vdata-Vcom | Cpd/Ctotal. Since the data voltage Vdata corresponding to the main pixel 221 is the voltage on the data line charging the adjacent sub-pixel 222, and the data Vdata corresponding to the sub-pixel 222 is the voltage on the data line charging the adjacent sub-pixel 221, and the common voltage Vcom on the common electrode is the same, the absolute value of (Vdata-Vcom) included in the voltage variation Δ V1 of the main pixel 221 of the liquid crystal display panel is smaller than the absolute value of (Vdata-Vcom) included in the voltage variation Δ V2 of the sub-pixel 222, so that, in order to reduce the difference of the voltage variation Δ V of the main pixel 221 and the sub-pixel 222 to improve the horizontal crosstalk, in the present embodiment, the main parasitic capacitance Cpd1 is the parasitic capacitance 223 between the main pixel electrode 223 of the main pixel 221 and the data line 223 adjacent to the main pixel 221 and not charging the main pixel electrode, by making Cpd1/Ctotal1 of the main pixel 221 larger than Cpd2/Ctotal2 of the sub-pixel 222, the main total parasitic capacitance Ctotal1 is the total parasitic capacitance of the main pixel electrode 223, the sub parasitic capacitance Cpd2 is the parasitic capacitance between the sub pixel electrode 224 of the sub pixel 222 and the data line adjacent to the sub pixel electrode 224 and not charging the sub pixel electrode 224, and the sub total parasitic capacitance Ctotal2 is the total parasitic capacitance of the sub pixel electrode 224. In combination with the fact that the | Vdata-Vcom | of the main pixel 221 is smaller than the | Vdata-Vcom | of the sub-pixel 222, the product of the two can reduce the difference between the voltage variation Δ V1 of the main pixel 221 and the voltage variation Δ V2 of the sub-pixel 222, so that the problem that the voltage variation Δ V of the high and low gray-scale pixel 220 in the prior art cannot be offset can be solved, the coupling effect difference of the whole horizontal adjacent pixel 220 is smaller, and the possibility of occurrence of horizontal crosstalk is reduced.
In this embodiment, since the total parasitic capacitance Ctotal of the pixel 220 is the total parasitic capacitance of the pixel electrode, including the parasitic capacitance between the pixel electrode and the data line, the parasitic capacitance between the pixel electrode and the scan line, the parasitic capacitance between the pixel electrodes, and the like, the total parasitic capacitance Ctotal of the pixel 220 is much larger than the parasitic capacitance Cpd, so that even if the parasitic capacitance Cpd varies, the total parasitic capacitance Ctotal of the pixel 220 is not greatly affected, and generally speaking, the main total parasitic capacitance Ctotal1 of the main pixel 221 and the sub total parasitic capacitance Ctotal2 of the sub-pixel 222 can be regarded as equal. In order to realize that Cpd1/Ctotal1 of the main pixel 221 is larger than Cpd2/Ctotal2 of the sub-pixel 222, and thus the main parasitic capacitance Cpd1 of the main pixel 221 is designed to be larger than the sub-parasitic capacitance Cpd2 of the sub-pixel 222, it is possible to achieve a reduction in the difference between the voltage variation Δ V1 of the main pixel 221 and the voltage variation Δ V2 of the sub-pixel 222.
Specifically, referring to fig. 3, fig. 4a, fig. 4b, fig. 5a, and fig. 5b (taking the first two pixels of the third row of pixels in fig. 3 as an example for illustration), an overlapping width W1 of the projection of the main pixel electrode 223 of the main pixel 221 and the data line DL2 adjacent thereto and not charging the main pixel 221 on the horizontal plane is greater than an overlapping width W2 of the projection of the sub-pixel electrode 224 of the sub-pixel 222 and the data line DL3 adjacent thereto and not charging the sub-pixel 222 on the horizontal plane, so that the main parasitic capacitance Cpd1 of the main pixel 221 is greater than the sub-parasitic capacitance Cpd2 of the sub-pixel 222. In the present embodiment, the overlap width W1 of the projection of the main pixel electrode 223 of the main pixel 221 and the data line DL2 adjacent thereto and not charging the main pixel 221 on the horizontal plane is 1 μm to 6 μm larger than the overlap width W2 of the projection of the sub pixel electrode 224 of the sub pixel 222 and the data line DL3 adjacent thereto and not charging the sub pixel 222 on the horizontal plane, for example, the overlap width W1 of the projection of the main pixel electrode 223 of the main pixel 221 and the data line DL2 adjacent thereto and not charging the main pixel 221 on the horizontal plane is 1 μm, 2 μm, 3 μm, 3.5 μm, 4 μm, 5 μm, 6 μm, and the like larger than the overlap width W2 of the projection of the sub pixel electrode 224 of the sub pixel 222 and the data line DL3 adjacent thereto and not charging the sub pixel 222 on the horizontal plane. In the present embodiment, the overlapping width W2 of the projection of the sub-pixel electrode 224 of the sub-pixel 222 and the data line DL3 adjacent thereto and not charging the sub-pixel 222 on the horizontal plane is-3 μm to 6 μm, for example, the overlap width W2 of the projection of the sub-pixel electrode 224 of the sub-pixel 222 and the data line DL3 adjacent thereto and not charging the sub-pixel 222 on the horizontal plane is-3 μm, -2 μm, -1 μm, 0 μm, 1 μm, 2 μm, 3 μm, 4 μm, 5 μm, 6 μm, etc., here, the negative overlap width means that the sub-pixel electrode 224 of the sub-pixel 222 and the data line DL3 adjacent thereto and not charging the sub-pixel 222 do not overlap in projection on a horizontal plane, for example, an overlap width W2 of-2 μm indicates that there is a gap of 2 μm between the projection of the sub-pixel electrode 224 of the sub-pixel 222 and the data line DL3 adjacent thereto and not charging the sub-pixel 222 on the horizontal plane. In the present embodiment, the overlapping width W1 of the projection on the horizontal plane of the main pixel electrode 223 of the main pixel 221 and the data line DL2 adjacent thereto and not charging the main pixel 221 is 1 to 15 μm, and the overlapping width W1 of the projection on the horizontal plane of the main pixel electrode 223 of the main pixel 221 and the data line DL2 adjacent thereto and not charging the main pixel 221 is 1 μm, 2 μm, 3 μm, 4 μm, 5 μm, 6 μm, 7 μm, 8 μm, 9 μm, 10 μm, 11 μm, 12 μm, 13 μm, 14 μm, 15 μm, or the like, for example.
Compared with the prior art, in the present embodiment, the width of the main pixel electrode 223 in the row direction is greater than the width of the sub pixel electrode 224 in the row direction (horizontal direction), and the width of the data line is unchanged, that is, the width of the main pixel electrode 223 is widened, so that both horizontal crosstalk can be reduced, and the performance when a voltage signal is transmitted on the data line is consistent, for example, RCdelay performance. In addition, in another embodiment of the present invention, the width of the main pixel electrode 223 in the row direction is equal to the width of the sub pixel electrode 224 in the row direction, but the widths of the data lines are not equal, for example, the width of the data line DL2 adjacent to the main pixel 221 and not charging the main pixel 221 and the width of the portion corresponding to the main pixel 221 are greater than the width of the data line DL3 adjacent to the sub pixel 222 and not charging the sub pixel 222 and the portion corresponding to the sub pixel 222, that is, the width of the first segment D1 of the data line DL2 adjacent to the main pixel 221 and not charging the main pixel 221 is greater than the width of the first segment D1 of the data line DL3 adjacent to the sub pixel 222 and not charging the sub pixel 222.
In addition, in the present embodiment, please refer to fig. 3, any two adjacent pixels 220 in the column direction are the main pixel 221 and the sub-pixel 222, the polarity of the main pixel 221 is the same, and the polarity of the sub-pixel 222 is the same on the same row. However, the present invention is not limited thereto, and in other embodiments of the present invention, any two adjacent pixels 220 in the column direction are both the primary pixel 221 or both the secondary pixels 222, as shown in fig. 6.
In addition, with continuing reference to fig. 3, in the present embodiment, the same data line includes both the first segment D1 and the second segment D2, and of course, includes the connection terminal D3, but the invention is not limited thereto, and in other embodiments of the invention, with reference to fig. 6, the same data line may also include only the first segment and the connection segment, or only the second segment and the connection segment.
It should be noted that, in the present specification, the embodiments are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments may be referred to each other. For the device embodiment, since it is basically similar to the method embodiment, the description is simple, and for the relevant points, refer to the partial description of the method embodiment.
Through the description of the above embodiments, the present invention has the following advantages:
the vertical orientation type liquid crystal display panel with the visual angle compensation comprises a plurality of pixel areas, each pixel forms M areas, two adjacent pixels of any row of pixels are divided into a main pixel and a sub-pixel, and the gray scale of the main pixel is larger than that of the sub-pixel; in any row of pixels, the polarities of all the main pixels are the same, the polarities of all the sub-pixels are the same, and the polarities of the main pixels and the sub-pixels are different; moreover, Cpd1/Ctotal1 of the main pixel is larger than Cpd2/Ctotal2 of the sub-pixel, so that the difference between the voltage variation of the main pixel and the voltage variation of the sub-pixel can be reduced, and the problem that the voltage variation Δ V of the high-low gray-scale pixel cannot be offset in the prior art can be improved, so that the coupling effect difference of the whole horizontal adjacent pixels is smaller, and the probability of occurrence of horizontal crosstalk is lower.
The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention, and it is therefore to be understood that the invention is not limited by the scope of the appended claims.
Claims (10)
1. A vertical alignment liquid crystal display panel based on a viewing angle compensation driving method, comprising:
a plurality of scan lines extending in a row direction;
a plurality of data lines extending in a column direction;
the pixel regions are defined by the data lines and the scanning lines in a crossed mode, pixels are arranged in each pixel region, and each pixel comprises a pixel electrode; each pixel forms M regions, wherein M is a positive integer; two adjacent pixels of any row of pixels are divided into a main pixel and a sub-pixel, and the gray scale of the main pixel is larger than that of the sub-pixel; in any row of pixels, the polarities of all the main pixels are the same, the polarities of all the sub-pixels are the same, and the polarities of the main pixels and the sub-pixels are different;
according to a voltage change amount formula Δ V ═ Vdata-Vcom | _ Cpd/Ctotal, the | Vdata-Vcom | included in the voltage change amount of the main pixel is smaller than the | Vdata-Vcom | included in the voltage change amount of the sub-pixel, and Cpd1/Ctotal1 of the main pixel is larger than Cpd2/Ctotal2 of the sub-pixel; wherein Vdata is a voltage on a data line adjacent to the pixel electrode and not charging the pixel, Vcom is a voltage on the common electrode, main parasitic capacitance Cpd1 is a parasitic capacitance between the main pixel electrode of the main pixel and the data line adjacent thereto and not charging the main pixel, main total parasitic capacitance Ctotal1 is a total parasitic capacitance of the main pixel electrode, sub parasitic capacitance Cpd2 is a parasitic capacitance between a sub-pixel electrode of the sub-pixel and the data line adjacent thereto and not charging the sub-pixel electrode, and sub total parasitic capacitance Ctotal2 is a total parasitic capacitance of the sub-pixel electrode.
2. The vertically aligned liquid crystal display panel of claim 1, wherein the primary parasitic capacitance Cpd1 is larger than the secondary parasitic capacitance Cpd2 to reduce the occurrence of horizontal crosstalk.
3. The vertically aligned liquid crystal display panel according to claim 2, wherein the overlapping width of the projection in the horizontal plane of the main pixel electrode and the data line adjacent thereto and not charging the main pixel is larger than the overlapping width of the projection in the horizontal plane of the sub pixel electrode and the data line adjacent thereto and not charging the sub pixel.
4. The vertically aligned liquid crystal display panel according to claim 2, wherein the overlapping width of the projection on the horizontal plane of the main pixel electrode and the data line adjacent thereto and not charging the main pixel is 1 μm to 6 μm larger than the overlapping width of the projection on the horizontal plane of the sub pixel electrode and the data line adjacent thereto and not charging the sub pixel.
5. The vertically aligned liquid crystal display panel according to claim 4, wherein a width of overlap of a projection on a horizontal plane of the subpixel electrode and a data line adjacent thereto and not charging the subpixel electrode is from-3 μm to 6 μm.
6. The vertically aligned liquid crystal display panel according to claim 4, wherein a width of overlap of a projection on a horizontal plane of the main pixel electrode and a data line adjacent thereto and not charging the main pixel is 1 to 15 μm.
7. The vertically aligned liquid crystal display panel according to any one of claims 3 to 6, wherein the width of the main pixel electrode in the row direction is larger than the width of the sub pixel electrode in the row direction; alternatively, the width of a portion corresponding to the data line adjacent to the main pixel and not charging the main pixel and the main pixel is larger than the width of a portion corresponding to the data line adjacent to the sub pixel and not charging the sub pixel and the sub pixel.
8. The vertically aligned liquid crystal display panel according to any one of claims 1 to 6, wherein M is a positive integer of 4 or less.
9. The vertically aligned liquid crystal display panel according to any one of claims 1 to 6, wherein any two adjacent pixels in a column direction are the main pixel and the sub pixel.
10. The vertically aligned liquid crystal display panel according to any one of claims 1 to 6, wherein M regions are formed per pixel by protrusions and/or gaps.
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| KR100884996B1 (en) * | 2002-11-11 | 2009-02-20 | 엘지디스플레이 주식회사 | Liquid crystal display panel |
| KR20050000653A (en) * | 2003-06-24 | 2005-01-06 | 엘지.필립스 엘시디 주식회사 | Liquid crystal display panel |
| JP4394512B2 (en) * | 2004-04-30 | 2010-01-06 | 富士通株式会社 | Liquid crystal display device with improved viewing angle characteristics |
| KR20070020742A (en) * | 2005-08-16 | 2007-02-22 | 삼성전자주식회사 | Liquid crystal display |
| KR20070051037A (en) * | 2005-11-14 | 2007-05-17 | 삼성전자주식회사 | Liquid crystal display |
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| KR101330393B1 (en) * | 2007-04-02 | 2013-11-15 | 엘지디스플레이 주식회사 | Liquid crystal display |
| CN100562791C (en) * | 2007-12-12 | 2009-11-25 | 友达光电股份有限公司 | LCD and LCD drive method |
| KR101430639B1 (en) * | 2008-03-17 | 2014-08-18 | 삼성디스플레이 주식회사 | Thin film transistor substrate and display device having the same |
| KR101668380B1 (en) * | 2009-05-19 | 2016-10-24 | 삼성디스플레이 주식회사 | Liquid crsytal display |
| KR20110101894A (en) * | 2010-03-10 | 2011-09-16 | 삼성전자주식회사 | Liquid crsytal display |
| KR20120083163A (en) * | 2011-01-17 | 2012-07-25 | 삼성전자주식회사 | Liquid crystal display |
| CN103760726A (en) * | 2013-12-31 | 2014-04-30 | 深圳市华星光电技术有限公司 | Liquid crystal display panel, pixel structure of liquid crystal display panel and driving method of liquid crystal display panel |
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Address after: 9-2 Tangming Avenue, Guangming New District, Shenzhen City, Guangdong Province Patentee after: TCL Huaxing Photoelectric Technology Co.,Ltd. Address before: 9-2 Tangming Avenue, Guangming New District, Shenzhen City, Guangdong Province Patentee before: Shenzhen China Star Optoelectronics Technology Co.,Ltd. |