CN108732812B - Display panel and display device - Google Patents
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- G02F1/00—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
- G02F1/01—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
- G02F1/13—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
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
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- G02F1/133514—Colour filters
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- G—PHYSICS
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- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
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Abstract
The invention discloses a display panel and a display device. A display panel, comprising: the display device comprises a display area and a plurality of pixel units, wherein each pixel unit comprises at least one first color sub-pixel, at least one second color sub-pixel, at least one third color sub-pixel, at least one fourth color sub-pixel and at least one white sub-pixel; the opening area of the first color sub-pixel is the same as that of the second color sub-pixel, and is the same as that of the third color sub-pixel; the opening area of the fourth color sub-pixel is smaller than that of the first color sub-pixel, and the opening area of the white sub-pixel is smaller than that of the first color sub-pixel. The invention can simultaneously improve the color gamut range and the contrast of the display panel.
Description
Technical Field
The present invention relates to the field of display technologies, and in particular, to a display panel and a display device.
Background
In the conventional display device technology, the display panel is mainly divided into two mainstream technologies, namely a liquid crystal display panel and an organic self-luminous display panel. The liquid crystal display panel forms an electric field capable of controlling the deflection of liquid crystal molecules by applying voltage to two ends of the liquid crystal molecules, so that the transmission of light rays is controlled to realize the display function of the display panel; the organic self-luminous display panel adopts an organic electroluminescent material, and when current passes through the organic electroluminescent material, the luminescent material can emit light, so that the display function of the display panel is realized.
In a conventional display panel, a pixel unit includes a red sub-pixel, a green sub-pixel and a blue sub-pixel, and the three sub-pixels with different colors realize the display of different gray scales of the pixel unit by controlling the brightness variation of the sub-pixels. At present, along with the improvement of the user on the requirement of visual experience, the performance requirement on the display effect in the technical field of display panels is higher and higher.
Therefore, it is an urgent problem in the art to provide a display panel and a display device with high contrast and wide color gamut.
Disclosure of Invention
In view of the above, the present invention provides a display panel and a display device, which solve the technical problems of high contrast and wide color gamut.
In order to solve the above technical problem, the present invention provides a display panel, including: the display device comprises a display area and a plurality of pixel units, wherein each pixel unit comprises at least one first color sub-pixel, at least one second color sub-pixel, at least one third color sub-pixel, at least one fourth color sub-pixel and at least one white sub-pixel; wherein,
the opening area of the first color sub-pixel is the same as that of the second color sub-pixel, and is the same as that of the third color sub-pixel;
the opening area of the fourth color sub-pixel is smaller than that of the first color sub-pixel, and the opening area of the white sub-pixel is smaller than that of the first color sub-pixel.
Further, in order to solve the above technical problem, the present invention provides a display device including any one of the display panels.
Compared with the prior art, the display panel and the display device provided by the invention have the beneficial effects that:
in the invention, the pixel unit comprises at least one first color sub-pixel, at least one second color sub-pixel, at least one third color sub-pixel, at least one fourth color sub-pixel and at least one white sub-pixel. The first color sub-pixel, the second color sub-pixel and the third color sub-pixel have the same opening area and can be respectively used as a red primary color sub-pixel, a green primary color sub-pixel and a blue primary color sub-pixel, and normal color display of the display panel can be realized. The fourth color sub-pixel is added in the pixel unit, the purity of the fourth color displayed by the pixel unit can be improved, and the more real fourth color is displayed, so that the color gamut range of the display panel can be enlarged, the opening area of the fourth color sub-pixel is smaller than that of the first color sub-pixel, the color cast phenomenon of the display panel is avoided, and meanwhile, the situation that the ratio of the fourth color sub-pixel in the display panel is too large, so that the ratio of the first color sub-pixel, the second color sub-pixel and the third color sub-pixel is too small, and the brightness of the display panel when a pure color picture is displayed is influenced is avoided. In addition, the white sub-pixel is added in the pixel unit to improve the brightness of the display panel and further improve the contrast of the display panel, the opening area of the white sub-pixel is smaller than that of the first color sub-pixel, and the situation that the ratio of the first color sub-pixel, the second color sub-pixel and the third color sub-pixel is too small due to too large ratio of the white sub-pixel in the display panel, so that the brightness of the display panel when the display panel displays a pure color picture is influenced is avoided. The design of the pixel unit in the display panel provided by the invention can realize the improvement of the color gamut range and the contrast of the display panel and simultaneously ensure the brightness when a pure color picture is displayed.
Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.
Fig. 1 is a schematic view of a display panel according to an embodiment of the invention;
fig. 2 is a schematic diagram of an alternative implementation of an arrangement of pixel units in a display panel according to an embodiment of the present invention;
fig. 3 is a schematic diagram of another alternative implementation of the arrangement of pixel units in the display panel according to the embodiment of the present invention;
fig. 4 is a schematic diagram of another alternative implementation of the arrangement of pixel units in the display panel according to the embodiment of the present invention;
fig. 5 is a schematic diagram of another alternative implementation of a pixel unit in a display panel according to an embodiment of the present invention;
fig. 6 is a schematic diagram of another alternative implementation of a pixel unit in a display panel according to an embodiment of the present invention;
fig. 7 is a schematic diagram of another alternative implementation of a pixel unit in a display panel according to an embodiment of the present invention;
FIG. 8 is a schematic diagram of another alternative embodiment of a display panel according to an embodiment of the present invention;
FIG. 9 is a schematic diagram of another alternative embodiment of a display panel according to an embodiment of the present invention;
FIG. 10 is a schematic diagram of another alternative embodiment of a display panel according to an embodiment of the present invention;
FIG. 11 is a schematic diagram of another alternative embodiment of a display panel according to an embodiment of the present invention;
FIG. 12 is a schematic diagram of another alternative embodiment of a display panel according to an embodiment of the present invention;
FIG. 13 is a schematic diagram of another alternative embodiment of a display panel according to an embodiment of the present invention;
fig. 14 is a schematic view of a display device according to an embodiment of the invention.
Detailed Description
Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.
The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.
Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.
In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
The invention provides a display panel and a display device.A pixel unit of a display area is designed to comprise at least five colors of sub-pixels, a fourth color sub-pixel is added in the pixel unit to improve the color gamut range displayed by the display panel, and a white sub-pixel is added to improve the contrast of the display panel. While improving the display panel contrast and gamut range.
Fig. 1 is a schematic view of a display panel according to an embodiment of the present invention, and as shown in fig. 1, the display panel includes a display area AA, where the display area AA includes a plurality of pixel units S, and each pixel unit S includes at least one first-color sub-pixel sp1, at least one second-color sub-pixel sp2, at least one third-color sub-pixel sp3, at least one fourth-color sub-pixel sp4, and at least one white sub-pixel sp 5. The number of sub-pixels in one pixel unit S is at least five, that is, five sub-pixels with different colors, but the number of sub-pixels in one pixel unit S may be greater than five, and one pixel unit may also include a plurality of sub-pixels with the same color. The shape and arrangement of the sub-pixels in the pixel unit S in fig. 1 are only schematic representations, and do not limit the present invention. The opening area of the first color sub-pixel sp1 is the same as that of the second color sub-pixel sp2, and is the same as that of the third color sub-pixel sp 3; the opening area of the fourth color sub-pixel sp4 is smaller than that of the first color sub-pixel sp1, and the opening area of the white sub-pixel sp5 is smaller than that of the first color sub-pixel sp 1.
In the invention, the pixel unit comprises at least one first color sub-pixel, at least one second color sub-pixel, at least one third color sub-pixel, at least one fourth color sub-pixel and at least one white sub-pixel. The first color sub-pixel, the second color sub-pixel and the third color sub-pixel have the same opening area and can be respectively used as a red primary color sub-pixel, a green primary color sub-pixel and a blue primary color sub-pixel, and normal color display of the display panel can be realized. The fourth color sub-pixel is added in the pixel unit, so that the purity of the fourth color displayed by the pixel unit can be improved, the more real fourth color is displayed, and the color gamut range of the display panel can be enlarged. In addition, a white sub-pixel is added in the pixel unit to improve the brightness of the display panel, thereby improving the contrast of the display panel. The design of the pixel unit in the display panel provided by the invention can realize high contrast and wide color gamut simultaneously. In addition, the opening area of the fourth color sub-pixel is too large, which may cause the color to be biased to the color of the light emitted by the fourth color sub-pixel when the display panel displays, and the opening area of the fourth color sub-pixel is set to be smaller than the opening area of the first color sub-pixel, so that the color cast phenomenon of the display panel is avoided, and meanwhile, the situation that the ratio of the fourth color sub-pixel to the first color sub-pixel, the second color sub-pixel and the third color sub-pixel is too small due to too large proportion in the display panel, which affects the brightness of the display panel when the display panel displays a pure color picture, is avoided; according to the invention, the opening area of the white sub-pixel is smaller than that of the first color sub-pixel, so that the influence on the brightness of the display panel when the pure color picture is displayed by the display panel due to too small ratio of the first color sub-pixel, the second color sub-pixel and the third color sub-pixel caused by too large ratio of the white sub-pixel in the display panel is avoided. The display panel may be a liquid crystal display panel, for example. When the liquid crystal display panel is used, the liquid crystal display panel comprises an array substrate, a color film substrate and a liquid crystal layer positioned between the array substrate and the color film substrate. The array substrate includes a substrate, and a thin film transistor, a common electrode, a pixel electrode, a gate line, a data line, and the like formed on the substrate, wherein the thin film transistor serves as a switching device of a sub-pixel in the display panel. The grid electrode of the thin film transistor is connected with the grid line of the display panel and is connected with the grid scanning circuit through the grid line, the source electrode of the thin film transistor is connected with the data line and is connected with an integrated circuit chip (IC) through the data line, the drain electrode of the thin film transistor is connected with the pixel electrode, voltage is loaded to the pixel electrode through the data line, an electric field is formed between the pixel electrode and the common electrode, and then liquid crystal molecules of the liquid crystal layer deflect in the electric field, so that whether light is emitted or not is controlled. The color film substrate is provided with a color resistance layer, the color resistance layer comprises color resistances of different colors such as a first color resistance layer, a second color resistance layer, a third color resistance layer, a fourth color resistance layer and the like, and the color resistance layer can also comprise a white color resistance layer, and the light penetrates through the color resistance layer to realize color display of the display panel.
The display panel may be an organic light emitting display panel, for example. When the organic light emitting display panel is used, the organic light emitting display panel comprises an array substrate, wherein the array substrate comprises a substrate and a thin film transistor formed on the substrate; the display layer is positioned on the array substrate and comprises a plurality of light-emitting devices, and each light-emitting device comprises an anode, a light-emitting layer and a cathode, wherein each light-emitting layer comprises a first color light-emitting layer, a second color light-emitting layer, a third color light-emitting layer, a fourth color light-emitting layer and a white light-emitting layer; and an encapsulation structure is arranged on the display layer and used for preventing the light-emitting device from being damaged by water and oxygen and prolonging the service life of the light-emitting device.
Further, fig. 2 is a schematic diagram of an alternative implementation of the arrangement of the pixel unit in the display panel according to the embodiment of the present invention. Fig. 3 is a schematic diagram of another alternative implementation of the arrangement of the pixel unit in the display panel according to the embodiment of the present invention. In the display area of the display panel provided by the invention, the arrangement mode of the sub-pixels in the pixel unit can be changed in various ways. Fig. 4 is a schematic diagram of another alternative implementation of the arrangement of the pixel unit in the display panel according to the embodiment of the present invention. As shown in fig. 4, the pixel unit includes two first color sub-pixels sp1, two second color sub-pixels sp2, two third color sub-pixels sp3, two fourth color sub-pixels sp4, and two white sub-pixels sp 5. It is within the scope of the present invention that one pixel unit includes at least five sub-pixels with different colors, and the opening area of the sub-pixels meets the design requirements of the present invention, and the details are not repeated herein.
Optionally, the first color sub-pixel, the second color sub-pixel, and the third color sub-pixel are any one of a red sub-pixel, a green sub-pixel, and a blue sub-pixel, and the colors of the first color sub-pixel, the second color sub-pixel, and the third color sub-pixel are different from each other. The fourth color sub-pixel is any one of a yellow sub-pixel, a violet sub-pixel, or a cyan sub-pixel. When the fourth color sub-pixel is a yellow sub-pixel, the purity of yellow displayed by the pixel unit can be improved, and the yellow color gamut of the display panel is increased; when the fourth color sub-pixel is a purple sub-pixel, the pureness of purple displayed by the pixel unit can be improved, and the purple color gamut of the display panel is increased; when the fourth color sub-pixel is a cyan sub-pixel, the purity of cyan displayed by the pixel unit can be improved, and the cyan color gamut of the display panel can be increased.
In some optional embodiments, in a display panel provided by an embodiment of the present invention, in a pixel unit, a ratio of an opening area of a sub-pixel of a fourth color to an opening area of a sub-pixel of a white color is M, where M is greater than or equal to 0.25 and less than or equal to 3. The fourth color sub-pixel is arranged in the pixel unit, the color gamut range of the display panel can be enlarged, the white sub-pixel is arranged, the contrast of the display panel can be improved, the influence of the fourth color sub-pixel and the white sub-pixel on the color gamut and the contrast of the display panel is comprehensively considered, the influence of the arrangement of the fourth color sub-pixel and the white sub-pixel on the opening area of the three primary color sub-pixels in the display panel is considered, M is set to be more than or equal to 0.25 and less than or equal to 3, and in the range set by the embodiment, the brightness of a pure color picture of the display panel is ensured, and the contrast and the color gamut range of the display panel are improved.
In some optional embodiments, the influence degree of the fourth color sub-pixel on the color gamut range and the influence degree of the white sub-pixel on the contrast improvement are comprehensively considered, the ratio of the opening area of the fourth color sub-pixel to the opening area of the white sub-pixel is set to be 1:2, that is, M is 0.5, the size relationship between the opening areas of the fourth color sub-pixel and the white sub-pixel in the pixel unit is reasonably set, and the situation that the contrast is improved by a lot and the color gamut range is increased insignificantly or the situation that the color gamut is increased and the contrast is improved is unobvious is avoided. And the opening area of the fourth color sub-pixel is smaller, so that the color of the light emitted by the fourth color sub-pixel can be prevented from being deviated when the display panel displays, namely, the color deviation phenomenon is avoided.
Further, in some alternative embodiments, the sum of the opening area of the fourth color sub-pixel and the opening area of the white sub-pixel is equal to the opening area of the first color sub-pixel. Taking an example in which one pixel unit includes five sub-pixels different in color, the ratio of the sum of the aperture areas of the fourth color sub-pixel and the white sub-pixel to the total aperture area of one pixel unit is only a quarter, as compared with the case in which one pixel unit includes three sub-pixels different in color in the related art, under the condition of ensuring that the number of pixel units in the display panel is unchanged (namely, the image density is unchanged), the aperture area of a single three-primary-color sub-pixel is reduced by only one twelfth (N/3-N/4 is equal to N/12, wherein N is the total aperture area of one pixel unit).
Taking the fourth color sub-pixel as the yellow sub-pixel as an example, applying the technical scheme of the present invention to a liquid crystal display panel, and examining the change of the white luminance and the color gamut of the display panel with the opening area of the yellow sub-pixel and the opening area of the white sub-pixel when the sum of the opening area of the fourth color sub-pixel and the opening area of the white sub-pixel is equal to the opening area of the first color sub-pixel. The color gamut is evaluated by the ntsc (national Television Standards committee) color gamut standard.
In the comparative example (related art), the pixel unit includes three kinds of sub-pixels including a first color sub-pixel, a second color sub-pixel, and a third color sub-pixel having the same aperture area, and the aperture areas of the sub-pixels are all a. In the embodiment of the invention, the pixel unit comprises five sub-pixels including a first color sub-pixel, a second color sub-pixel, a third color sub-pixel, a fourth color sub-pixel and a white sub-pixel, wherein the opening areas of the first color sub-pixel, the second color sub-pixel and the third color sub-pixel are the same, and the opening areas are all A; the sum of the opening area of the fourth color sub-pixel and the opening area of the white sub-pixel is equal to the opening area A of the first color sub-pixel. The data of the white luminance and color gamut in the display panels provided by the comparative example and the example of the present invention are shown in table 1 below.
[ Table 1]
Referring to the data in table 1, in the embodiment of the present invention, the sum of the opening area of the fourth color sub-pixel and the opening area of the white sub-pixel is equal to the opening area a of the first color sub-pixel, the ratio M of the opening area of the fourth color sub-pixel to the opening area of the white sub-pixel varies in the range of 1:9 to 9, the white luminance gradually increases as the opening area of the white sub-pixel gradually increases, and the color gamut NTSC gradually increases as the opening area of the fourth color sub-pixel gradually increases. In comparison with the comparative examples, the white luminance of the inventive examples was greater than that of the comparative examples, and the NTSC of the inventive examples was greater than that of the comparative examples. The fourth color sub-pixel and the white sub-pixel are added in the pixel unit, so that the white brightness and the color gamut range can be increased simultaneously.
In some alternative embodiments, the sum of the opening area of the fourth color sub-pixel and the opening area of the white sub-pixel is equal to the opening area of the first color sub-pixel, and the ratio of the opening area of the fourth color sub-pixel to the opening area of the white sub-pixel is 1: 1. Referring to the data in table 1, the display panel provided in this embodiment can improve the white luminance by about 612nit to 530nit to 82nit compared to the related art, and significantly improve the contrast of the display panel; meanwhile, the increased color gamut size is about 83% -72%, which is 11%, and the display color gamut range of the display panel is obviously increased.
In some alternative embodiments, the sum of the opening area of the fourth color sub-pixel and the opening area of the white sub-pixel is equal to the opening area of the first color sub-pixel, and the ratio of the opening area of the fourth color sub-pixel to the opening area of the white sub-pixel is 1: 2. This embodiment considers the effect of the opening area of the fourth color sub-pixel on the gamut range and the effect of the opening area of the white sub-pixel on the contrast in combination. Referring to the data in table 1, the display panel provided in this embodiment can improve the white luminance by about 645nit to 530nit to 115nit compared to the related art, thereby significantly improving the contrast of the display panel; meanwhile, the increased color gamut size is about 80% -72%, which is 8%, and the display color gamut range of the display panel is obviously increased. Further, in the display panel provided by the embodiment of the present invention, a pixel unit includes a first color sub-pixel, a second color sub-pixel, a third color sub-pixel, a fourth color sub-pixel and a white sub-pixel. In this embodiment, the colors of the sub-pixels in the pixel unit are different from each other, and the configuration of the pixel unit is relatively simple, which is advantageous for the design of the driving circuit.
Further, in the pixel unit, the first color sub-pixel, the second color sub-pixel and the third color sub-pixel are sequentially arranged along a first direction to form a first row, the fourth color sub-pixel and the white sub-pixel are adjacently arranged along the first direction to form a second row, and the first row and the second row are adjacently arranged along a second direction, wherein the second direction is crossed with the first direction.
In an implementation manner, fig. 5 is a schematic diagram of another alternative implementation manner of a pixel unit in a display panel according to an embodiment of the present invention. As shown in fig. 5, one pixel unit S includes one first-color sub-pixel sp1, one second-color sub-pixel sp2, one third-color sub-pixel sp3, one fourth-color sub-pixel sp4, and one white sub-pixel sp 5. In the pixel unit S, a first row H1 is formed by sequentially arranging a first color sub-pixel sp1, a second color sub-pixel sp2 and a third color sub-pixel sp3 in a first direction a, and a second row H2 is formed by adjacently arranging a fourth color sub-pixel sp4 and a white sub-pixel sp5 in the first direction a, wherein the fourth color sub-pixel sp4 and the white sub-pixel sp5 are sequentially arranged in the second row H2, and the first row H1 and the second row H2 are adjacent in a second direction b, wherein the second direction b intersects with the first direction a. In the embodiment, the shape of the pixel unit is close to a rectangle or a square, the sub-pixels with five colors are arranged and concentrated, the distance between any two sub-pixels is small, and the color mixing effect of any two sub-pixels or a plurality of sub-pixels is good when the pixel unit performs color mixing display; and the pixel units are basically square, which is beneficial to the tight arrangement of the pixel units of the display panel and ensures the pixel density of the display panel.
In another implementation, fig. 6 is a schematic diagram of another alternative implementation of a pixel unit in a display panel according to an embodiment of the present invention. As shown in fig. 6, in the pixel unit S, a first row H1 is formed by sequentially arranging a first color sub-pixel sp1, a second color sub-pixel sp2 and a third color sub-pixel sp3 in a first direction a, and a second row H2 is formed by adjacently arranging a fourth color sub-pixel sp4 and a white sub-pixel sp5 in the first direction a, wherein the white sub-pixel sp5 and the fourth color sub-pixel sp4 are sequentially arranged, and a first row H1 and a second row H2 are adjacent in a second direction b, wherein the second direction b intersects with the first direction a. In the embodiment, the shape of the pixel unit is close to a rectangle or a square, the sub-pixels with five colors are arranged and concentrated, the distance between any two sub-pixels is small, and the color mixing effect of any two sub-pixels or a plurality of sub-pixels is good when the pixel unit performs color mixing display; and the pixel units are basically square, which is beneficial to the tight arrangement of the pixel units of the display panel and ensures the pixel density of the display panel.
In another implementation, fig. 7 is a schematic diagram of another alternative implementation of a pixel unit in a display panel according to an embodiment of the present invention. As shown in fig. 7, in the pixel unit S, the first color sub-pixel sp1, the second color sub-pixel sp2 and the third color sub-pixel sp3 are sequentially arranged in the first direction a to form a first row H1, the fourth color sub-pixel sp4 and the white sub-pixel sp5 are adjacently disposed in the first direction a to form a second row H2, only the case where the white sub-pixel sp5 and the fourth color sub-pixel sp4 are sequentially arranged is shown in fig. 7, and the first row H1 and the second row H2 are adjacent in the second direction b, wherein the second direction b intersects with the first direction a.
Further, as shown in fig. 5 and 6, in some alternative embodiments, the long sides of the first color sub-pixel sp1, the second color sub-pixel sp2 and the third color sub-pixel sp3 all extend along the second direction b. In this embodiment, the long sides of the first color sub-pixel, the second color sub-pixel and the third color sub-pixel are arranged along the same direction, so that the three sub-pixels are arranged to form a regular rectangular shape, and the length difference between the long side and the short side of the rectangular shape formed by arrangement is small, which is beneficial to the arrangement design of the fourth color sub-pixel and the white sub-pixel in the pixel unit, and ensures that the shape of the pixel unit is close to the regular rectangle or square.
Further, fig. 8 is a schematic diagram of another alternative implementation of the display panel according to the embodiment of the present invention. As shown in fig. 8, in the display area AA, a plurality of pixel units S are arranged in a first direction a to form a pixel row SH, and a plurality of pixel units S are arranged in a second direction b to form a pixel column SL. In the display area of the display panel, the pixel units are regularly arranged, which is beneficial to simplifying the design of the pixel driving circuit of the display panel.
Further, fig. 9 is a schematic view of another alternative implementation of the display panel according to the embodiment of the present invention, as shown in fig. 9, the display panel includes a plurality of gate lines G extending along a first direction a and a plurality of data lines D extending along a second direction b, where the gate lines G provide gate scanning signals for sub-pixels in the display panel, and the data lines D provide data signals for the sub-pixels. When the display panel is a liquid crystal display panel, the color film substrate in the liquid crystal display panel further comprises a black matrix, and the black matrix separates sub-pixels in the display panel. And in the direction vertical to the panel surface of the display panel, the grid lines and the data lines are positioned in the area where the black matrix is positioned. The display panel provided by the invention is characterized in that in one pixel unit: the fourth color sub-pixel and the white sub-pixel are connected to the same gate line, the gate line can control the fourth color sub-pixel and the white sub-pixel to be turned on and off simultaneously, when the display panel displays a pure color picture, the fourth color sub-pixel and the white sub-pixel need to be controlled to be turned off, the pixel driving circuit can control the fourth color sub-pixel and the white sub-pixel conveniently, and the design of the pixel circuit can be relatively simplified. Two sub-pixels adjacent to the same pixel unit in the first direction are connected to the same data line, so that the number of the data lines is reduced, the occupied area of the driving wiring in the display panel is reduced, and the aperture opening ratio of the display panel can be improved.
In an alternative implementation, fig. 10 is a schematic diagram of another alternative implementation of the display panel according to the embodiment of the invention, as shown in fig. 10, the gate line G includes a first gate line G1, a second gate line G2, and a third gate line G3, and the data line D includes a first data line D1 and a second data line D2; in one pixel unit S: the first color sub-pixel sp1 and the third color sub-pixel sp3 are connected to the first gate line G1, the second color sub-pixel sp2 is connected to the second gate line G2, the fourth color sub-pixel sp4 and the white sub-pixel sp5 are connected to the third gate line G3, and the second color sub-pixel sp2 is connected to the first data line D1, or the second color sub-pixel sp2 is connected to the second data line D2, as exemplified in fig. 10 only by the connection of the second color sub-pixel sp2 to the first data line D1; two sub-pixels adjacent to the same pixel unit S in the first direction a are connected to the same data line, and in this embodiment, a first color sub-pixel sp1 and a white sub-pixel sp5 are connected to the first data line D1, and a third color sub-pixel sp3 and a fourth color sub-pixel sp4 are connected to the second data line D2.
In another alternative implementation, fig. 11 is a schematic diagram of another alternative implementation of the display panel according to the embodiment of the present invention, and as shown in fig. 11, in one pixel unit S: the first color sub-pixel sp1 and the third color sub-pixel sp3 are connected to the first gate line G1, the second color sub-pixel sp2 is connected to the second gate line G2, the fourth color sub-pixel sp4 and the white sub-pixel sp5 are connected to the third gate line G3, and the second color sub-pixel sp2 is connected to the first data line D1, or the second color sub-pixel sp2 is connected to the second data line D2, as exemplified in fig. 11 only by the connection of the second color sub-pixel sp2 to the first data line D1; the first and fourth color sub-pixels sp1 and sp4 are connected to the first data line D1, and the third and white color sub-pixels sp3 and sp5 are connected to the second data line D2.
In the embodiments corresponding to fig. 10 and 11, five sub-pixels in one pixel unit S are controlled and driven by five wires including three gate lines and two data lines, the number of driving wires is small, which is beneficial to improving the aperture ratio of the display panel, and the fourth color sub-pixel and the white sub-pixel are controlled by the same gate line, which is convenient to separately control the fourth color sub-pixel and the white sub-pixel.
In another alternative implementation, fig. 12 is a schematic diagram of another alternative implementation of the display panel according to the embodiment of the invention, as shown in fig. 12, the gate line G includes a first gate line G1 and a second gate line G2, and the data line D includes a first data line D1, a second data line D2 and a third data line D3; in one pixel unit S: the first color sub-pixel sp1, the second color sub-pixel sp2 and the third color sub-pixel sp3 are connected to the first gate line G1, the fourth color sub-pixel sp4 and the white sub-pixel sp5 are connected to the second gate line G2, and the second color sub-pixel sp2 is connected to the third data line D3; two sub-pixels adjacent to the same pixel unit S in the first direction a are connected to the same data line, and in this embodiment, a first color sub-pixel sp1 and a white sub-pixel sp5 are connected to the first data line D1, and a third color sub-pixel sp3 and a fourth color sub-pixel sp4 are connected to the second data line D2.
In another alternative implementation, fig. 13 is a schematic diagram of another alternative implementation of the display panel according to the embodiment of the present invention, and as shown in fig. 13, in one pixel unit S: the first color sub-pixel sp1, the second color sub-pixel sp2 and the third color sub-pixel sp3 are connected to the first gate line G1, the fourth color sub-pixel sp4 and the white sub-pixel sp5 are connected to the second gate line G2, and the second color sub-pixel sp2 is connected to the third data line D3; the first and fourth color sub-pixels sp2 and sp4 are connected to the first data line D1, and the third and white color sub-pixels sp3 and sp5 are connected to the second data line D2.
In the embodiment corresponding to fig. 12 and 13, five sub-pixels in one pixel unit S are controlled and driven by five wires including two gate lines and three data lines, the number of driving wires is small, which is beneficial to improving the aperture ratio of the display panel, and the fourth color sub-pixel and the white sub-pixel are controlled by the same gate line, which is convenient to separately control the fourth color sub-pixel and the white sub-pixel.
Further, the present invention further provides a display device, fig. 14 is a schematic view of the display device provided in the embodiment of the present invention, and as shown in fig. 14, the display device provided in the present invention includes any one of the display panels 100 provided in the embodiment of the present invention. The display device provided by the embodiment of the invention can be any electronic product with a display function, including but not limited to the following categories: the mobile terminal comprises a television, a notebook computer, a desktop display, a tablet computer, a digital camera, a mobile phone, an intelligent bracelet, intelligent glasses, a vehicle-mounted display, medical equipment, industrial control equipment, a touch interaction terminal and the like.
According to the embodiment, the display panel and the display device of the invention have the following beneficial effects:
the fourth color sub-pixel is added in the pixel unit, the purity of the fourth color displayed by the pixel unit can be improved, and the more real fourth color is displayed, so that the color gamut range of the display panel can be enlarged, the opening area of the fourth color sub-pixel is smaller than that of the first color sub-pixel, the color cast phenomenon of the display panel is avoided, and meanwhile, the situation that the ratio of the fourth color sub-pixel in the display panel is too large, so that the ratio of the first color sub-pixel, the second color sub-pixel and the third color sub-pixel is too small, and the brightness of the display panel when a pure color picture is displayed is influenced is avoided. In addition, the white sub-pixel is added in the pixel unit to improve the brightness of the display panel and further improve the contrast of the display panel, the opening area of the white sub-pixel is smaller than that of the first color sub-pixel, and the situation that the ratio of the first color sub-pixel, the second color sub-pixel and the third color sub-pixel is too small due to too large ratio of the white sub-pixel in the display panel, so that the brightness of the display panel when the display panel displays a pure color picture is influenced is avoided. The design of the pixel unit in the display panel provided by the invention can simultaneously realize the improvement of the color gamut range and the contrast of the display panel.
Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.
Claims (10)
1. A display panel, comprising: a display area comprising a plurality of pixel units, one of the pixel units comprising at least one first color sub-pixel, at least one second color sub-pixel, at least one third color sub-pixel, at least one fourth color sub-pixel, and at least one white sub-pixel; wherein,
the opening area of the first color sub-pixel is the same as that of the second color sub-pixel, and is the same as that of the third color sub-pixel;
the opening area of the fourth color sub-pixel is smaller than that of the first color sub-pixel, and the opening area of the white sub-pixel is smaller than that of the first color sub-pixel;
one said pixel unit comprises a first color sub-pixel, a second color sub-pixel, a third color sub-pixel, a fourth color sub-pixel and a white sub-pixel; in the pixel unit, the first color sub-pixel, the second color sub-pixel and the third color sub-pixel are sequentially arranged along a first direction to form a first row, the fourth color sub-pixel and the white sub-pixel are adjacently arranged along the first direction to form a second row, and the first row and the second row are adjacent along a second direction, wherein the second direction is crossed with the first direction;
the display panel includes a gate line extending in the first direction and a data line extending in the second direction, and in one of the pixel units: the fourth color sub-pixel and the white sub-pixel are connected to the same gate line, and two sub-pixels adjacent to the same pixel unit in the first direction are connected to the same data line.
2. The display panel of claim 1, wherein the ratio of the opening area of the fourth color sub-pixel to the opening area of the white sub-pixel is M, wherein M is greater than or equal to 0.25 and less than or equal to 3.
3. The display panel according to claim 2, wherein M is 0.5.
4. The display panel according to claim 1,
the sum of the opening area of the fourth color sub-pixel and the opening area of the white sub-pixel is equal to the opening area of the first color sub-pixel.
5. The display panel according to claim 1,
the first color sub-pixel, the second color sub-pixel and the third color sub-pixel are respectively any one of a red sub-pixel, a green sub-pixel and a blue sub-pixel, and the fourth color sub-pixel is any one of a yellow sub-pixel, a purple sub-pixel or a cyan sub-pixel.
6. The display panel according to claim 1,
the long sides of the first color sub-pixel, the second color sub-pixel, and the third color sub-pixel extend along the second direction.
7. The display panel according to claim 1,
in the display area, a plurality of pixel units are arranged along the first direction to form pixel rows, and a plurality of pixel units are arranged along the second direction to form pixel columns.
8. The display panel according to claim 1,
the gate lines include a first gate line, a second gate line and a third gate line, and the data lines include a first data line and a second data line;
in one of the pixel cells:
the first color sub-pixel and the third color sub-pixel are connected to the first gate line, the second color sub-pixel is connected to the second gate line, the fourth color sub-pixel and the white sub-pixel are connected to the third gate line, the second color sub-pixel is connected to the first data line, or the second color sub-pixel is connected to the second data line;
the first color sub-pixel and the white sub-pixel are connected to the first data line, the third color sub-pixel and the fourth color sub-pixel are connected to the second data line, or,
the first color sub-pixel and the fourth color sub-pixel are connected to the first data line, and the third color sub-pixel and the white sub-pixel are connected to the second data line.
9. The display panel according to claim 1,
the gate lines include a first gate line and a second gate line, and the data lines include a first data line, a second data line, and a third data line;
in one of the pixel cells:
the first, second and third color sub-pixels are connected to the first gate line, the fourth and white sub-pixels are connected to the second gate line, and the second color sub-pixel is connected to the third data line;
the first color sub-pixel and the white sub-pixel are connected to the first data line, the third color sub-pixel and the fourth color sub-pixel are connected to the second data line, or,
the first color sub-pixel and the fourth color sub-pixel are connected to the first data line, and the third color sub-pixel and the white sub-pixel are connected to the second data line.
10. A display device characterized by comprising the display panel according to any one of claims 1 to 9.
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| CN112305797A (en) * | 2019-07-30 | 2021-02-02 | 瀚宇彩晶股份有限公司 | Reflective display panel and its pixel structure |
| US11587983B2 (en) * | 2019-07-31 | 2023-02-21 | Chengdu Boe Optoelectronics Technology Co., Ltd. | Electroluminescent display module and display device with reduced color cast |
| CN110444574B (en) * | 2019-08-14 | 2022-01-25 | 昆山工研院新型平板显示技术中心有限公司 | Display panel and display device |
| EP4131455A4 (en) * | 2021-03-19 | 2023-06-14 | BOE Technology Group Co., Ltd. | DISPLAY SUBSTRATE, DISPLAY PANEL AND IMAGE DISPLAY PROCESS |
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