CN106556953B

CN106556953B - Liquid crystal display panel

Info

Publication number: CN106556953B
Application number: CN201710049919.3A
Authority: CN
Inventors: 李金磊
Original assignee: Wuhan China Star Optoelectronics Technology Co Ltd
Current assignee: Wuhan China Star Optoelectronics Technology Co Ltd
Priority date: 2017-01-23
Filing date: 2017-01-23
Publication date: 2020-03-17
Anticipated expiration: 2037-01-23
Also published as: CN106556953A

Abstract

The invention provides a liquid crystal display panel, which comprises a plurality of data lines, a plurality of scanning lines, a plurality of first pixels and a plurality of second pixels, wherein the first pixels and the second pixels are defined by the data lines and the scanning lines in a crossed mode and are alternately arranged, the first pixels comprise red sub-pixels, green sub-pixels, blue sub-pixels and white sub-pixels, and the second pixels comprise red sub-pixels, green sub-pixels and blue sub-pixels. The liquid crystal display panel greatly improves the brightness and the picture quality when displaying a pure color picture.

Description

Liquid crystal display panel

Technical Field

The invention relates to the technical field of displays, in particular to a liquid crystal display panel.

Background

Currently, many liquid crystal display panels adopt an RGBW type pixel structure, that is, each pixel includes sub-pixels of four colors of red, green, blue and white, and such liquid crystal display panels have the advantages of low power consumption and the like compared with the liquid crystal display panels of the conventional RGB type pixel structure. However, the liquid crystal display panel adopting the RGBW type pixel structure is liable to have a problem of insufficient luminance when displaying a pure color picture.

Therefore, it is necessary to provide a liquid crystal display panel to solve the problems of the prior art.

Disclosure of Invention

The invention provides a liquid crystal display panel, which aims to solve the technical problem of insufficient brightness when a pure color picture is displayed in the liquid crystal display panel with a GRBW type pixel structure.

The invention provides a liquid crystal display panel, which comprises a plurality of data lines, a plurality of scanning lines, a plurality of first pixels and a plurality of second pixels, wherein the first pixels and the second pixels are defined by the data lines and the scanning lines in a crossed mode and are alternately arranged, the first pixels comprise red sub-pixels, green sub-pixels, blue sub-pixels and white sub-pixels, and the second pixels comprise red sub-pixels, green sub-pixels and blue sub-pixels.

In the liquid crystal display panel of the present invention, the four sub-pixels of the first pixel and the three sub-pixels of the second pixel are arranged in a strip shape, and the first pixel and the second pixel are alternately arranged along a row direction.

In the liquid crystal display panel of the invention, two white sub-pixels in two adjacent first pixels in the same column are in different sub-pixel columns.

In the liquid crystal display panel of the invention, one or two second pixels are arranged between two adjacent first pixels in the same row.

In the liquid crystal display panel of the present invention, four sub-pixels of the first pixel are arranged in a field shape, three sub-pixels of the second pixel are arranged in a strip shape, and the first pixel and the second pixel are alternately arranged in a row direction.

In the liquid crystal display panel of the invention, one second pixel is arranged between two adjacent first pixels in the same row, and the height of the second pixel is the same as that of the first pixel.

In the liquid crystal display panel, two second pixels are arranged between two adjacent first pixels in the same row, the two second pixels are arranged in the column direction, and the height of the two second pixels is the same as that of the first pixels.

In the liquid crystal display panel of the present invention, the width of the second pixel is the same as the width of the first pixel.

In the liquid crystal display panel of the present invention, the red sub-pixel and the green sub-pixel in the first pixel are located in a first row of a matrix, and the blue sub-pixel and the white sub-pixel in the first pixel are located in a second row of the matrix.

In the liquid crystal display panel of the present invention, the first pixel includes a first subpixel pair including a red subpixel and a green subpixel and a second subpixel pair including a white subpixel and a blue subpixel, and the first subpixel pair and the second subpixel pair are alternately arranged in a row direction and a column direction.

The invention provides a liquid crystal display panel. The liquid crystal display panel comprises a first pixel with four sub-pixels of a red sub-pixel, a green sub-pixel, a blue sub-pixel and a white sub-pixel and a second pixel with three sub-pixels of the red sub-pixel, the green sub-pixel and the blue sub-pixel, and the first pixel and the second pixel are alternately arranged, so that the brightness of the whole liquid crystal display panel is greatly improved when a pure color picture is displayed, and the picture quality is improved.

Drawings

Fig. 1 to fig. 5 are schematic structural diagrams of a first pixel and a second pixel in a liquid crystal display panel according to an embodiment of the invention.

Detailed Description

The following description of the embodiments refers to the accompanying drawings for illustrating the specific embodiments in which the invention may be practiced. In the present invention, directional terms such as "up", "down", "front", "back", "left", "right", "inner", "outer", "side", etc. refer to directions of the attached drawings. Accordingly, the directional terms used are used for explanation and understanding of the present invention, and are not used for limiting the present invention.

In fig. 1 to 5, elements having similar structures are denoted by the same reference numerals.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a pixel in a liquid crystal display panel in the embodiment. The liquid crystal display panel in the present embodiment includes a plurality of data lines, a plurality of scan lines, and a plurality of first pixels 10 and a plurality of second pixels 20 defined by the plurality of data lines crossing the plurality of scan lines.

Only the arrangement of the plurality of first pixels 10 and the plurality of second pixels 20 is shown in fig. 1, and the data lines and the scan lines are not shown. Typically, each data line is connected to a column of sub-pixels for inputting data voltage signals to the column of sub-pixels. Each scanning line is connected with a row of sub-pixels and is used for controlling the on-off state of the row of sub-pixels. In addition, the liquid crystal display panel may further include other components such as a control circuit and the like.

In the present embodiment, the first pixel 10 includes four sub-pixels, which are a red sub-pixel, a green sub-pixel, a blue sub-pixel and a white sub-pixel. The second pixel 20 includes three sub-pixels, which are a red sub-pixel, a green sub-pixel, and a blue sub-pixel.

In order to maintain the uniformity of the brightness throughout the liquid crystal display panel, the first pixels 10 and the second pixels 20 are alternately arranged. Since the second pixel 20 does not have a white sub-pixel, and the distance between the adjacent first pixel 10 and second pixel 20 is small, when displaying a picture, human eyes may perform integration processing on the luminance of the first pixel 10 and second pixel 20, which is equivalent to that the white sub-pixel in the first pixel 10 is shared by the adjacent first pixel 10 and second pixel 20.

Meanwhile, compared with a liquid crystal display panel which simply adopts an RGBW pixel structure, the number of the white sub-pixels is greatly reduced, so that when a pure color picture (such as a pure red picture, a pure green picture and the like) is displayed, the brightness of the pure color picture is greatly increased, and the quality of the pure color picture is improved.

In the present embodiment, each of the sub-pixels in the first pixel 10 and the second pixel 20 is arranged in a long stripe shape, as shown in fig. 1.

In fig. 1, the respective sub-pixels in the first pixel 10 are arranged in the order of red, green, blue and white sub-pixels, and the respective sub-pixels in the second pixel 20 are arranged in the order of red, green and blue sub-pixels, and the first pixel 10 and the second pixel 20 are alternately arranged in a row direction, that is, in a direction of a horizontal scanning line.

In the first pixel 10 shown in fig. 1, since the white sub-pixels in the first pixels 10 in the same column are all in the same sub-pixel column, the lcd panel is prone to have a sawtooth edge defect when displaying a picture, which seriously affects the picture quality.

In order to reduce the undesirable phenomenon of jagged edges, the white sub-pixels need to be evenly distributed, that is, the two white sub-pixels in the two adjacent first pixels 10 in the same column are in different sub-pixel columns, as shown in fig. 2.

In fig. 2, the first pixel may be divided into a first sub-pixel pair including a red sub-pixel and a green sub-pixel and a second sub-pixel pair including a white sub-pixel and a blue sub-pixel, the first sub-pixel pair and the second sub-pixel pair being alternately arranged in a row direction and a column direction.

When the first pixels 10 adopt the arrangement mode shown in fig. 2, in the adjacent first pixels 10 in the same row, the white sub-pixels are all distributed in different sub-pixel rows, which greatly reduces the bad phenomenon of the sawtooth edge of the display picture and improves the display quality of the picture.

It is understood that the arrangement of the long stripes of the four sub-pixels in the first pixels 10 is not limited to the case shown in fig. 1 and 2, and the four sub-pixels in the first pixels 10 in the same column may be arranged in the same manner or in different manners, for example, the arrangement of the four sub-pixels in the first pixel 10 in the third row in fig. 2 may be arranged in a manner different from the arrangement of the four sub-pixels in the first pixels 10 in the first row.

In fig. 1 and 2, the first pixels 10 and the second pixels 20 are alternately arranged in a row direction according to a ratio of 1:1, that is, one second pixel 20 is arranged between two adjacent first pixels 10 in the same row, and similarly, one first pixel 10 is arranged between two adjacent second pixels 20 in the same row.

As shown in fig. 3, in other embodiments, the first pixels 10 and the second pixels 20 are alternately arranged in a row direction according to a ratio of 1:2, that is, two second pixels 20 are disposed between two adjacent first pixels 10 in the same row.

It is understood that the ratio between the first pixel 10 and the second pixel 20 can be other values, and the larger the ratio of the first pixel 10 is, the higher the brightness of the liquid crystal display panel is under the same power consumption, or the lower the power consumption is under the same brightness. The larger the proportion of the second pixels 20 is, the larger the brightness of the pure color picture is when the liquid crystal display panel displays the pure color picture, and the purer the color is. Therefore, the ratio between the first pixel 10 and the second pixel 20 can be set according to the actual use of the liquid crystal display panel.

For example, in the liquid crystal display panel for teaching use, since a screen such as characters is mainly displayed during teaching use, the ratio of the first pixel 10 to the second pixel 20 may be adjusted to be larger than the ratio of the first pixel 10 to the second pixel 20, for example, the ratio of the first pixel 10 to the second pixel 20 is 2:1, 3:1, or the like. In the case of a television or the like with high requirements for display colors, the first pixel 10 duty ratio may be adjusted to be smaller than the second pixel 20 duty ratio, for example, the ratio of the first pixel 10 to the second pixel is 1:2, 1:3, or the like.

In addition, in the present embodiment, the height H of the first pixel 10 is the same as the height of the second pixel 20, so that the scan lines can be prevented from being folded and overlapped due to different heights, and further the parasitic capacitance can be prevented from increasing.

Meanwhile, the first pixels 10 and the second pixels 20 are alternately arranged in the row direction, and in the column direction, the pixels in the same column are of the same type, that is, the pixels in the same column are either the first pixels 10 or the second pixels 20, so that the widths of the sub-pixels in the same sub-pixel column are the same, and the situation that data lines are bent and overlapped due to the fact that the widths of the sub-pixels are different, and further parasitic capacitance is increased can be effectively avoided.

In the present embodiment, the width L of the first pixel 10 is the same as the width of the second pixel 20, and since the number of sub-pixels in the first pixel 10 is one more than the number of sub-pixels in the second pixel 20, the width of each sub-pixel in the first pixel 10 is smaller than the width of each sub-pixel in the second pixel 20, thereby ensuring that the width L of the first pixel 10 is the same as the width of the second pixel 20.

Of course, in other embodiments, the width L of the first pixel 10 may be different from the width of the second pixel 20, for example, the width of each sub-pixel in the first pixel 10 is the same as the width of each sub-pixel in the second pixel 20, so that the width L of the first pixel 10 is one sub-pixel width larger than the width of the second pixel 20.

In an embodiment, in order to make the white sub-pixels in the plurality of first pixels 10 uniformly distributed, the four sub-pixels in the first pixels 10 may also be arranged in a shape of a Chinese character 'tian', as shown in fig. 4.

In fig. 4, the red sub-pixel and the green sub-pixel in the first pixel 10 are a sub-pixel pair, i.e., a first sub-pixel pair, the blue sub-pixel and the white sub-pixel are a sub-pixel pair, i.e., a second sub-pixel pair, and the first sub-pixel pair is located in a first row of a field shape and the second sub-pixel pair is located in a second row of the field shape, thereby forming the structure of the first pixel 10 in fig. 4.

In the schematic structural diagram of the first pixel 10 and the second pixel 20 shown in fig. 4, three sub-pixels in the second pixel 20 are arranged in a long stripe shape, and the first pixel 10 and the second pixel 20 are alternately arranged along the row direction.

In order to avoid the overlapping of the scanning lines, in the present embodiment, the height of the first pixel 10 is the same as the height of the second pixel 20, i.e. the sum of the heights of two sub-pixels in the first pixel 10 is the same as the height of one sub-pixel in the second pixel 20.

Since the first pixels 10 and the second pixels 20 are alternately arranged in the row direction, the width of the first pixels 10 may be the same as the width of the second pixels 20, and at this time, the area of the first pixels 10 is the same as the area of the second pixels 20. Of course, in other embodiments, the width of the first pixel 10 may be different from the width of the second pixel 20, and is not limited herein.

As can be seen from the structure shown in fig. 4, one second pixel 20 is disposed between two adjacent first pixels 10 in the same row, i.e. the ratio of the first pixel 10 to the second pixel 20 is 1: 1.

in other embodiments, the ratio between the first pixel 10 and the second pixel 20 may be other ratios. Referring to fig. 5, in the structure shown in fig. 5, a ratio between the first pixels 10 and the second pixels 20 is 1:2, that is, two second pixels 20 are disposed between two adjacent first pixels 10 in the same row, the two second pixels 20 are stacked and arranged in a column direction, an intersection line between the two second pixels 20 is aligned with an intersection line between two pairs of upper and lower pairs of sub-pixels in the first pixels 10, and at this time, heights of the two second pixels 20 are the same as a height of the first pixels 10.

It is understood that the ratio between the first pixel 10 and the second pixel 20 can be set according to the actual requirements for the color, brightness, power consumption, etc. of the image display, and is not limited in particular.

The embodiment provides a liquid crystal display panel, which comprises a first pixel with four sub-pixels of a red sub-pixel, a green sub-pixel, a blue sub-pixel and a white sub-pixel, and a second pixel with three sub-pixels of the red sub-pixel, the green sub-pixel and the blue sub-pixel, wherein the first pixel and the second pixel are alternately arranged, so that the brightness of the whole liquid crystal display panel is greatly improved when a pure color picture is displayed, and the picture quality is improved.

In summary, although the present invention has been described with reference to the preferred embodiments, the above-described preferred embodiments are not intended to limit the present invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, therefore, the scope of the present invention shall be determined by the appended claims.

Claims

1. A liquid crystal display panel comprising a plurality of data lines, a plurality of scan lines, and a plurality of first pixels and a plurality of second pixels defined by the data lines crossing the scan lines, the first pixels and the second pixels being alternately arranged, wherein the first pixels comprise red, green, blue, and white sub-pixels, and the second pixels comprise red, green, and blue sub-pixels;

four sub-pixels of the first pixel are arranged in a shape of Chinese character 'tian';

the red sub-pixels and the green sub-pixels in the first pixels are positioned in a first row of a Chinese character 'tian', the blue sub-pixels and the white sub-pixels in the first pixels are positioned in a second row of the Chinese character 'tian', three sub-pixels of the second pixels are arranged in a long strip shape, and the first pixels and the second pixels are alternately arranged along the row direction;

when two second pixels are arranged between two adjacent first pixels in the same row, the two second pixels are arranged in the column direction, the height of the two second pixels is the same as that of the first pixels, and the boundary line between the two second pixels is aligned with the boundary lines of the upper pair of sub-pixels and the lower pair of sub-pixels in the first pixels.

2. The liquid crystal display panel according to claim 1, wherein when one of the second pixels is provided between two adjacent first pixels in the same row, the height of the second pixel is the same as the height of the first pixel.

3. The liquid crystal display panel according to claim 2, wherein a width of the second pixel is the same as a width of the first pixel.