WO2020082436A1

WO2020082436A1 - Display panel

Info

Publication number: WO2020082436A1
Application number: PCT/CN2018/114758
Authority: WO
Inventors: 纪飞林
Original assignee: 惠科股份有限公司
Priority date: 2018-10-22
Filing date: 2018-11-09
Publication date: 2020-04-30
Also published as: CN208969390U

Abstract

A display panel, comprising a plurality of pixel rows, the plurality of pixel rows comprising a plurality of pixel groups (300), the pixel groups (300) comprising an even number of pixel units (310), the number of positive polarity sub-signals received by first sub-pixels (311), second sub-pixels (312), third sub-pixels (313) and fourth sub-pixels (314) of the pixel units (310) being the same as the number of negative polarity sub-signals.

Description

Display panel

Technical field

The present application relates to the field of display technology, in particular to a display panel.

Background technique

With the increasing awareness of energy saving and emission reduction, the energy saving advantages of RGBW technology are increasingly prominent and appearing in the development of liquid crystal panels. The market demand for RGBW technology is also increasing. While RGBW technology brings consumers high brightness and high contrast under a white screen, it can also reduce the brightness of the backlight, reduce the energy consumption of the entire LCD panel, and achieve energy-saving effects.

However, for a display panel using this RGBW technology, if a conventional driving method is also used, each color sub-pixel will be driven by data of the same polarity in the same frame. In the single-color display, the common electrode will have a voltage offset due to the coupling effect of the data signal of the same polarity in the previous frame. However, after the polarity of the offset common electrode is reversed in the next frame of data signal, there will be a problem of flickering the picture.

Application content

Based on this, it is necessary to provide a display panel that can effectively prevent flicker in response to the above technical problems.

A display panel, including:

Multiple scanning lines, extending in the first direction, set to provide scanning signals line by line;

A plurality of data lines extending in the second direction and crossing the scan line are arranged to provide a data signal. The data signal includes a plurality of sub-signals. When the scan line provides a scan signal, the data line provides a Sub-signal

Data drive, connected to the data line, set to control the output of the data signal;

A plurality of pixel rows, the pixel row includes a plurality of pixel groups, the pixel group includes an even number of pixel units; the pixel unit includes a first sub-pixel, a second sub-pixel, a third sub-pixel, and a fourth sub-pixel, The first sub-pixel, the second sub-pixel, the third sub-pixel and the fourth sub-pixel are all connected to the scan line and the data line and each receives a sub-signal within a frame time; within a frame time, The number of sub-signals with positive polarity and the number of sub-signals with negative polarity received by the first, second, third and fourth sub-pixels in one pixel group the same;

The first sub-pixel, the second sub-pixel, the third sub-pixel, and the fourth sub-pixel of the plurality of pixel rows are arranged to form a plurality of pixel columns, and the data signals received by the same pixel column include sub-signals with positive polarity And the sub-signals in negative polarity.

In one of the embodiments, the data signals received by the same pixel column are divided into a plurality of signal groups, the data signals in the signal group include an even number of sub-signals, and the even number of sub-signals are at positive The number of sexual sub-signals is the same as the number of negative sub-signals.

In one of the embodiments, the number of the sub-signals included in each of the signal groups is the same.

In one of the embodiments, a plurality of the signal groups are periodically arranged to form several signal periods.

In one of the embodiments, one signal period includes one signal group.

In one embodiment, the sub-signals in the first half of the signal period have the same polarity, the sub-signals in the second half of the signal period have the same polarity, and the first half of the signal period The polarity of the sub-signal in the signal period is opposite to the polarity of the sub-signal in the second half of the signal period.

In one of the embodiments, the first half of the signal period has one sub-signal, and the second half of the signal period has one sub-signal.

In one embodiment, the polarities of adjacent sub-signals received in each pixel unit are opposite, and the polarities of adjacent sub-signals received by adjacent pixel units of the same pixel group are the same.

In one of the embodiments, the polarities of adjacent sub-signals received in each of the pixel groups are opposite.

In one of the embodiments, each pixel group in the same pixel row is periodically arranged.

In one embodiment, the arrangement of the first sub-pixel, the second sub-pixel, the third sub-pixel, and the fourth sub-pixel in each pixel group of the same pixel row The same, the polar distribution of the sub-signals received in each pixel group of the same pixel row is different.

In one embodiment, the polarity distribution of the sub-signals received in each pixel group of the same pixel row is different, the first sub-pixel in each pixel group of the same pixel row, The second sub-pixel, the third sub-pixel, and the fourth sub-pixel are arranged in the same manner.

In one embodiment, the first sub-pixel, the second sub-pixel, the third sub-pixel and the fourth sub-pixel in each pixel unit of the same pixel group are arranged in the same order.

In one embodiment, the first sub-pixel, the second sub-pixel, the third sub-pixel, and the fourth sub-pixel in each pixel unit of the same pixel row are arranged in the same order.

In one of the embodiments, the first sub-pixel, the second sub-pixel, the third sub-pixel and the fourth sub-pixel in the pixel unit of the odd-numbered pixel rows are all arranged according to the first arrangement manner, the even-numbered rows The first sub-pixel, the second sub-pixel, the third sub-pixel and the fourth sub-pixel in the pixel unit of the pixel row are all arranged according to the second arrangement manner.

In one embodiment, the first arrangement is that the first subpixel, the second subpixel, the third subpixel, and the fourth subpixel are all in accordance with the first subpixel, the second subpixel, the third The sub-pixels and the fourth sub-pixels are arranged in sequence; the second arrangement is that the first, second, third and fourth sub-pixels are all in accordance with the third and fourth sub-pixels The pixels, the first sub-pixel, and the second sub-pixel are arranged in this order.

In one of the embodiments, the fourth sub-pixel is a brightening sub-pixel.

In one of the embodiments, the fourth sub-pixel is a white sub-pixel.

In one embodiment, the first subpixel is a red subpixel; the second subpixel is a green subpixel; and the third subpixel is a blue subpixel.

In one embodiment, the first sub-pixel, the second sub-pixel, the third sub-pixel, and the fourth sub-pixel in the pixel unit of all pixel rows are arranged in the same order.

The above display panel can effectively prevent the voltage deviation of the common electrode due to the coupling effect of the data signal during the single-color display within a frame time. Furthermore, when the polarity of the data signals of the upper and lower frames is reversed, the problem of flickering on the screen can be effectively improved. At the same time, the polarities of the data signals received on the pixel columns of the same column are not completely the same, preventing the voltage shift of the column due to the coupling effect of the corresponding common electrode, thereby preventing the data signals of the column from reversing the polarity of the upper and lower frames In the case of rotation, vertical stripes are generated. Furthermore, the display performance is further improved.

The details of one or more embodiments of the application are set forth in the drawings and description below. Other features, objects, and advantages of this application will become apparent from the description, drawings, and claims.

BRIEF DESCRIPTION

In order to better describe and explain the embodiments or examples of those inventions disclosed herein, reference may be made to one or more drawings. The additional details or examples used to describe the drawings should not be considered as limiting the scope of any of the disclosed inventions, the presently described embodiments or examples, and the best modes of these inventions currently understood.

FIG. 1 is a schematic diagram of the display panel in the previous frame in an embodiment;

FIG. 2 is a schematic view showing the display panel shown in FIG. 1 in the next frame.

detailed description

In order to make the purpose, technical solutions and advantages of the present application clearer, the following describes the present application in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application, and are not intended to limit the present application.

The display panel provided by the present application may be set in a liquid crystal display device or a liquid crystal display device, for example, a liquid crystal display, a liquid crystal television, and so on. The panel of the present application may be a twisted nematic (TN) panel, an in-pane switching (IPS) panel, a multi-quadrant vertical alignment technology (Multi-domain Vertica Aignment, VA) panel. Of course, other types of panels can also be used.

As shown in FIGS. 1 and 2, in one embodiment, a display panel is provided, including a plurality of scan lines 100, a plurality of data lines 200, a data drive (unlabeled), and a plurality of pixel rows (unlabeled)

The plurality of scan lines 100 extend in a first direction (for example, a horizontal direction), and are provided to provide scan signals line by line.

A plurality of data lines 200, which extend in a second direction (for example, the vertical direction) and cross the scan line 100, are arranged to provide data signals. The data signal includes multiple sub-signals. When the scan line 100 provides a scan signal, the data line 200 provides a sub-signal.

The data driver is connected to the data line 200 and is set to control the output of the data signal.

The pixel row includes a plurality of pixel groups 300. The pixel group 300 includes an even number of pixel units 310. The pixel unit 310 includes a first sub-pixel 311, a second sub-pixel 312, a third sub-pixel 313, and a fourth sub-pixel 314. The first sub-pixel 311, the second sub-pixel 312, the third sub-pixel 313, and the fourth sub-pixel 314 are all connected to the data line 200 and the scan line 100 and each receives a sub-signal within a frame time. Moreover, the first sub-pixel 311, the second sub-pixel 312, the third sub-pixel 313, and the fourth sub-pixel 314 are all turned on by the scan signal on the scan line 100, and are charged by the data signal of the data line 200.

In the embodiment of the present application, within a frame time, within a pixel group 300, the positive sub-pixels received by the first sub-pixel 311, the second sub-pixel 312, the third sub-pixel 313, and the fourth sub-pixel 314 The number of signals is the same as the number of sub-signals in negative polarity. Therefore, during single-color display, it is possible to effectively prevent the common electrode from generating a voltage shift due to the coupling effect of the data signal within a frame time. Furthermore, when the polarity of the data signals of the upper and lower frames is reversed, the problem of flickering on the screen can be effectively improved.

Meanwhile, the first sub-pixel 311, the second sub-pixel 312, the third sub-pixel 313, and the fourth sub-pixel 314 of the plurality of pixel rows of the present application are arranged into a plurality of pixel columns. The data signals received by the same pixel column include sub-signals with positive polarity and sub-signals with negative polarity, which can make the polarity of the data signals received on the pixel column of the same column not exactly the same and prevent the column from The corresponding common electrode generates a voltage offset due to the coupling effect, thereby preventing the column from generating vertical stripes when the polarity of the data signal of the upper and lower frames is reversed. Furthermore, the display performance is further improved.

In a specific embodiment of the present application, it may be provided that the pixel row includes a plurality of pixel groups 300, and the pixel group 300 includes an even number of pixel units 310. At this time, it may be set that the pixel group 300 includes two pixel units 310, and the polarity distribution of the data signal in the pixel group 300 may be +,-, +,-,-, +,-, +. Of course, this application is not limited to this.

In one embodiment, the data signals received by the same pixel column are divided into multiple signal groups. The data signal in a signal group includes an even number of sub-signals. And in the even number of sub-signals, the number of sub-signals with positive polarity is the same as the number of sub-signals with negative polarity. Therefore, it is beneficial to make the coupling effect of the positive sub-signal and the negative sub-signal on the common electrode cancel each other, thereby effectively preventing the generation of vertical stripes. In order to make the display more uniform, the same number of sub-signals included in each signal group may be set.

The more regular the data signals on the same pixel column, the easier it is to set up. In addition, the smaller the number of sub-signals included in each signal group, the greater the number of signal groups, and the more beneficial it is to make the properties of each pixel column more uniform throughout. Therefore, the number of signal groups can be set to multiple groups, and the multiple signal groups are arranged periodically to form several signal cycles. The signals are arranged periodically, that is, cyclically arranged, so that the properties of each pixel column are more uniform throughout. Of course, in the embodiment of the present application, when the number of data signals is set to multiple groups, the data signals of each group may not be arranged periodically, and the number of sub-signals included in each signal group may be the same or different.

In one embodiment, the number of signal groups is set to multiple groups, and the multiple signal groups are periodically arranged. In order to further enhance the regularity of the data signals on the pixel column of the same column, one signal period may include one signal group. The polarities of the sub-signals in the first half of the signal period are the same, and the polarities of the sub-signals in the second half of the signal period are the same. And the polarity of the sub-signal in the first half of the signal period is opposite to that of the sub-signal in the second half of the signal period. This makes the data signal application more regular, and thus facilitates the output setting of the data signal. Of course, one signal period may also include more than one signal group, and the comparison in this application is not limited.

More specifically, in one embodiment, it may be set that the first half of the signal period has one sub-signal, the second half of the signal period has one sub-signal, the sub-signal in the first half signal period and the sub-signal in the second half signal period The opposite. At this time, the polarity of the data signals on the pixel columns of the same column alternates positively and negatively, which can effectively prevent mutual cancellation of the coupling effect on the common electrode.

In one embodiment, the adjacent sub-signals received by each pixel column have opposite polarities, and thus the positive and negative data signals in the column direction of the pixel column can cancel the coupling effect on the common electrode in time . At the same time, the adjacent sub-signals received in each pixel unit can be set to have opposite polarities, so that the positive and negative data signals in the pixel unit can cancel the coupling effect on the common electrode in time. Adjacent sub-signals received by adjacent pixel units of the same pixel group have the same polarity, thereby facilitating the realization of sub-pixels of the same color on the same pixel row (first sub-pixel 311 or second sub-pixel 312 or third sub-pixel 313 or the fourth sub-pixel 314) receives the same number of sub-signals in positive polarity as the number of sub-signals in negative polarity.

Of course, when the order of the first sub-pixel 311, the second sub-pixel 312, the third sub-pixel 313, and the fourth sub-pixel 314 is reasonable, the adjacent sub-signals received in each pixel group 300 can also be set The polarity is reversed. For example, the arrangement order of the first subpixel 311, the second subpixel 312, the third subpixel 313, and the fourth subpixel 314 in one pixel group 300 is: the first subpixel 311, the second subpixel 312, the third Sub-pixel 313, fourth sub-pixel 314, second sub-pixel 312, third sub-pixel 313, fourth sub-pixel 314, first sub-pixel 311, then the polarity distribution of the received sub-signals in the pixel group 300 can be +,-, +,-, +,-, +,-.

In one embodiment, each pixel group 300 in the same pixel row is periodically arranged, that is, the same pixel group 300 is cyclically arranged, which can effectively improve the display uniformity on the pixel row. The same pixel group 300 indicates that the first sub-pixel 311, the second sub-pixel 312, the third sub-pixel 313, and the fourth sub-pixel 314 in the pixel group are arranged in the same way, and the polarity distribution of the sub-signals received in the pixel group The same.

In the embodiment of the present application, each pixel group 300 in the same pixel row may not be arranged periodically, and this application does not limit this. For example, the first subpixel 311, the second subpixel 312, the third subpixel 313, and the fourth subpixel 314 in each pixel group in the same pixel row are arranged in the same manner, and each pixel group 300 in the same pixel row receives The sub-signal polarity distribution is different. Or, the polarity distribution of the sub-signals received in each pixel group 300 of the same pixel row is the same, and the first sub-pixel 311, the second sub-pixel 312, and the third sub-pixel 313 in each pixel group 300 of the same pixel row 3. The arrangement of the fourth sub-pixels 314 is different. Or, the polarity distribution of the sub-signals received in each pixel group 300 of the same pixel row is different. The first sub-pixel 311, the second sub-pixel 312, the third sub-pixel 313, the third The arrangement of the four sub-pixels 314 is also different.

In the embodiment of the present application, the first subpixel 311 may be a red subpixel R, the second subpixel 312 may be a green subpixel G, the third subpixel 313 may be a blue subpixel B, and the fourth subpixel 314 may be white Subpixel W. Alternatively, the first sub-pixel, the second sub-pixel 312, the third sub-pixel 313, and the fourth sub-pixel 314 may also be sub-pixels of other colors, which is not limited in this application. However, since the first sub-pixel 311, the second sub-pixel 312, the third sub-pixel 313, and the fourth sub-pixel 314 are sub-pixels of different colors, their performances are different.

Therefore, in one embodiment, the first sub-pixel 311, the second sub-pixel 312, the third sub-pixel 313, and the fourth sub-pixel 314 in each pixel unit 310 of the same pixel group 300 are arranged in the same order, so that Consistency of performance of each pixel unit.

Further, each pixel group 300 in the same pixel row may be periodically arranged, and the first sub-pixel 311, the second sub-pixel 312, the third sub-pixel 313, and the fourth in each pixel unit 310 of the same pixel row The sub-pixels 314 are arranged in the same order, thereby facilitating design.

Of course, this application does not limit this. The first sub-pixel 311, the second sub-pixel 312, the third sub-pixel 313, and the fourth sub-pixel 314 in each pixel unit 310 of the same pixel group 300 may also be in different orders arrangement. Alternatively, the first sub-pixel 311, the second sub-pixel 312, the third sub-pixel 313, and the fourth sub-pixel 314 in each pixel unit 310 of the same pixel group 300 may be arranged in the same order, but different in the same pixel row The first sub-pixel 311, the second sub-pixel 312, the third sub-pixel 313, and the fourth sub-pixel 314 in the pixel group 300 may be arranged in different orders.

Specifically, in an embodiment, the first sub-pixel 311, the second sub-pixel 312, the third sub-pixel 313, and the fourth sub-pixel 314 in the pixel unit 310 of all pixel rows are arranged in the same order, for example, according to The order of the first sub-pixel 311, the second sub-pixel 312, the third sub-pixel 313, and the fourth sub-pixel 314 is arranged in sequence, thereby making the layout simple.

In another embodiment, the first sub-pixel 311, the second sub-pixel 312, the third sub-pixel 313, and the fourth sub-pixel 314 in the pixel units of the odd-numbered pixel rows are all arranged according to the first arrangement manner, for example, according to The first subpixel 311, the second subpixel 312, the third subpixel 313, and the fourth subpixel 314 are arranged in this order. The first sub-pixel 311, the second sub-pixel 312, the third sub-pixel 313, and the fourth sub-pixel 314 in the pixel units of the even-numbered pixel rows are arranged according to the second arrangement manner The four sub-pixels 314, the first sub-pixels 311, and the second sub-pixels 312 are arranged in order, so that the brightness of the display panel is uniform everywhere.

The fourth sub-pixel 314 may be a brightening sub-pixel (for example, a white sub-pixel). Therefore, in this embodiment, the brightening sub-pixels are not located in the same pixel column, so that the display panel is evenly brightened everywhere.

Of course, in the embodiment of the present application, the arrangement order of the first sub-pixel 311, the second sub-pixel 312, the third sub-pixel 313, and the fourth sub-pixel 314 in the pixel unit 310 of each pixel row may also be the same as the above two Examples are different. This application does not limit this.

The technical features of the above embodiments can be arbitrarily combined. To simplify the description, all possible combinations of the technical features in the above embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, all It is considered as the scope described in this specification.

The above-mentioned embodiment only expresses several implementation manners of the present application, and its description is more specific and detailed, but it should not be understood as limiting the scope of the patent application. It should be noted that, for those of ordinary skill in the art, without departing from the concept of the present application, a number of modifications and improvements can also be made, which all fall within the protection scope of the present application. Therefore, the protection scope of the patent of this application shall be subject to the appended claims.

Claims

A display panel, including:

Multiple scanning lines, extending in the first direction, set to provide scanning signals line by line;

A plurality of data lines extending in the second direction and crossing the scan line are arranged to provide a data signal. The data signal includes a plurality of sub-signals. When the scan line provides a scan signal, the data line provides a Sub-signal

Data drive, connected to the data line, set to control the output of the data signal;

A plurality of pixel rows, the pixel row includes a plurality of pixel groups, the pixel group includes an even number of pixel units; the pixel unit includes a first sub-pixel, a second sub-pixel, a third sub-pixel, and a fourth sub-pixel, The first sub-pixel, the second sub-pixel, the third sub-pixel and the fourth sub-pixel are all connected to the scan line and the data line and each receives a sub-signal within a frame time; within a frame time, The number of sub-signals with positive polarity and the number of sub-signals with negative polarity received by the first, second, third and fourth sub-pixels in one pixel group the same;

The first sub-pixel, the second sub-pixel, the third sub-pixel, and the fourth sub-pixel of the plurality of pixel rows are arranged to form a plurality of pixel columns, and the data signals received by the same pixel column include sub-signals with positive polarity And the sub-signals in negative polarity.
The display panel according to claim 1, wherein the data signals received by the same pixel column are divided into a plurality of signal groups, the data signals in the signal group include an even number of sub-signals, and the even number of sub-signals In the signal, the number of sub-signals with positive polarity is the same as the number of sub-signals with negative polarity.
The display panel according to claim 2, wherein the number of the sub-signals included in each of the signal groups is the same.
The display panel according to claim 3, wherein a plurality of the signal groups are periodically arranged to form several signal periods.
The display panel according to claim 4, wherein one of the signal periods includes one of the signal groups.
The display panel according to claim 5, wherein the polarities of the sub-signals in the first half of the signal period are the same, and the polarities of the sub-signals in the second half of the signal period are the same, and The polarity of the sub-signal in the first half of the signal period is opposite to the polarity of the sub-signal in the second half of the signal period.
The display panel according to claim 5, wherein the first half of the signal period has one sub-signal, and the second half of the signal period has one sub-signal.
The display panel according to claim 1, wherein the adjacent sub-signals received in each pixel unit have opposite polarities, and the adjacent sub-signals received by adjacent pixel units of the same pixel group The polarities are the same.
The display panel according to claim 1, wherein the adjacent sub-signals received in the pixel groups have opposite polarities.
The display panel according to claim 1, wherein each of the pixel groups in the same pixel row is periodically arranged.
The display panel according to claim 1, wherein the first sub-pixel, the second sub-pixel, the third sub-pixel, the fourth in each pixel group of the same pixel row The arrangement of the sub-pixels is the same, and the polar distribution of the sub-signals received in the pixel groups in the same pixel row is different.
The display panel according to claim 1, wherein the polarity distribution of the sub-signals received in each pixel group of the same pixel row is different, and the The first sub-pixel, the second sub-pixel, the third sub-pixel, and the fourth sub-pixel are arranged in the same manner.
The display panel according to claim 1, wherein the first subpixel, the second subpixel, the third subpixel, and the fourth subpixel in each pixel unit of the same pixel group are in the same order arrangement.
The display panel according to claim 1, wherein the first subpixel, the second subpixel, the third subpixel, and the fourth subpixel in each pixel unit of the same pixel row are in the same order arrangement.
The display panel according to claim 14, wherein the first sub-pixel, the second sub-pixel, the third sub-pixel, and the fourth sub-pixel in the pixel units of the odd-numbered pixel rows are arranged according to the first type Arranged in a manner, the first sub-pixel, the second sub-pixel, the third sub-pixel and the fourth sub-pixel in the pixel units of the even-numbered pixel rows are all arranged in the second arrangement manner.
The display panel according to claim 15, wherein the first arrangement is that the first sub-pixel, the second sub-pixel, the third sub-pixel, and the fourth sub-pixel are all in accordance with the first sub-pixel, the second The sub-pixel, the third sub-pixel, and the fourth sub-pixel are arranged in this order; the second arrangement is that the first sub-pixel, the second sub-pixel, the third sub-pixel, and the fourth sub-pixel all follow the third sub-pixel The pixels, the fourth sub-pixel, the first sub-pixel, and the second sub-pixel are arranged in this order.
The display panel of claim 16, wherein the fourth sub-pixel is a brightening sub-pixel.
The display panel according to claim 17, wherein the fourth sub-pixel is a white sub-pixel.
The display panel of claim 18, wherein the first sub-pixel is a red sub-pixel; the second sub-pixel is a green sub-pixel; and the third sub-pixel is a blue sub-pixel.
The display panel according to claim 14, wherein the first subpixel, the second subpixel, the third subpixel, and the fourth subpixel in the pixel unit of all pixel rows are arranged in the same order.