CN110047875B - Display panel and display device - Google Patents
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- CN110047875B CN110047875B CN201910172789.1A CN201910172789A CN110047875B CN 110047875 B CN110047875 B CN 110047875B CN 201910172789 A CN201910172789 A CN 201910172789A CN 110047875 B CN110047875 B CN 110047875B
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- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
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- H10K59/12—Active-matrix OLED [AMOLED] displays
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Abstract
The invention relates to the technical field of display panels, and discloses a display panel and a display device. The display panel comprises a display area, wherein a plurality of sub-pixels arranged in an array form are arranged in the display area, and a pixel opening is arranged in each sub-pixel; the display area comprises a conventional display area and an abnormal-shaped display area which are adjacent, the abnormal-shaped display area is positioned at the edge of the conventional display area, and the area of a single pixel opening of at least part of sub-pixels in the abnormal-shaped display area is smaller than that of the single pixel opening in the conventional display area. Through the mode, the display panel can weaken the saw tooth feeling of the edge of the display area of the display panel.
Description
Technical Field
The present invention relates to the field of display panel technologies, and in particular, to a display panel and a display device.
Background
Conventional display panels have an effective display area defined by a contour line along which corresponding pixels or sub-pixels are arranged to fit the shape of the contour line. When the contour line has a non-linear portion, the arrangement structure of the pixels or sub-pixels arranged along the contour line is generally stepped or jagged for the non-linear portion of the contour line, so that the edge of the display panel has a strong jaggy feeling in the display effect, and the use experience of a user is adversely affected.
Disclosure of Invention
In view of the above, the present invention provides a display panel and a display device, which can reduce the jaggy of the edge of the display area of the display panel.
In order to solve the technical problems, the invention adopts a technical scheme that: providing a display panel, wherein the display panel comprises a display area, a plurality of sub-pixels arranged in an array form are arranged in the display area, and a pixel opening is arranged in each sub-pixel; the display area comprises a conventional display area and an irregular display area which are adjacent, the irregular display area is positioned at the edge of the conventional display area, and the area of a single pixel opening of at least part of sub-pixels in the irregular display area is smaller than that of the single pixel opening in the conventional display area.
In an embodiment of the invention, in the shaped display area, the area of the individual pixel openings within at least part of the sub-pixels located in the same row and/or in the same column decreases gradually in a direction away from the regular display area.
In an embodiment of the invention, in the special-shaped display area, the difference of the areas of the pixel openings of the adjacent sub-pixels positioned in the same row and/or the same column is less than or equal to 20% of the area of the pixel opening of the sub-pixel in the conventional display area.
In an embodiment of the invention, each sub-pixel in the special-shaped display area has a plurality of pixel openings with the same light-emitting color, and the number of the pixel openings in each sub-pixel in the special-shaped display area is larger than that in each sub-pixel in the conventional display area.
In an embodiment of the invention, in the special-shaped display area, the number of pixel openings in the sub-pixels far away from the regular display area is larger than the number of pixel openings in the sub-pixels near the regular display area.
In an embodiment of the invention, in the special-shaped display area, the total area of the pixel openings of the sub-pixels is equal to or smaller than the total area of the pixel openings of the sub-pixels in the conventional display area.
In an embodiment of the invention, the center-to-center distance between adjacent sub-pixels in the special-shaped display area is equal to the center-to-center distance between corresponding adjacent sub-pixels in the conventional display area.
In an embodiment of the invention, in the normal display area, the sub-pixels corresponding to the three primary colors of red, green and blue form a first type of pixel unit, and in the special-shaped display area, the sub-pixels corresponding to the three primary colors of red, green and blue form a second type of pixel unit, and the size of the second type of pixel unit is smaller than that of the first type of pixel unit.
In an embodiment of the invention, at the edge of the normal display area, a plurality of first-type pixel units are formed into a step structure, and the second-type pixel units are positioned in the concave part of the step structure.
In order to solve the technical problem, the invention adopts another technical scheme that: a display device is provided, which includes a driving circuit and a display panel as set forth in the above embodiments, wherein the driving circuit is coupled to the display panel for driving the display panel to realize the display function thereof.
The invention has the beneficial effects that: different from the prior art, the present invention provides a display panel, wherein a plurality of sub-pixels arranged in an array form are disposed in a display region of the display panel, and a pixel opening is disposed in each sub-pixel for realizing a light emitting function of the sub-pixel. The display area comprises a conventional display area and an abnormal display area which are adjacent, and the abnormal display area is positioned at the edge of the conventional display area. The area of a single pixel opening of at least part of sub-pixels in the special-shaped display area is smaller than that of a single pixel opening in the conventional display area, so that the luminous intensity of the sub-pixels in the special-shaped display area is lower than that of the sub-pixels in the conventional display area, the luminous intensity of the special-shaped display area is reduced, and the sawtooth feeling of the edge of the display area of the display panel is reduced.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts. Wherein:
FIG. 1 is a schematic partial structure diagram of a display panel according to a first embodiment of the present invention;
FIG. 2 is a schematic diagram of a portion of a second embodiment of a display panel according to the present invention;
FIG. 3 is a schematic diagram of a portion of a display panel according to a third embodiment of the present invention;
FIG. 4 is a schematic diagram of a portion of a display panel according to a fourth embodiment of the present invention;
FIG. 5 is a schematic partial structure diagram of a display panel according to a fifth embodiment of the present invention;
FIG. 6 is a schematic partial structure diagram of a display panel according to a sixth embodiment of the present invention;
FIG. 7 is a schematic structural diagram of a display device according to an embodiment of the invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not to be construed as limiting the invention. It should be further noted that, for the convenience of description, only some structures related to the present invention are shown in the drawings, not all of them. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
The terms "first", "second", etc. in the present invention are used for distinguishing different objects, and are not used for describing a specific order. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the invention. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.
In order to solve the technical problem that the edge of a display area of a display panel in the prior art has a strong sawtooth sense, an embodiment of the invention provides a display panel, which comprises a display area, wherein a plurality of sub-pixels arranged in an array form are arranged in the display area, and a pixel opening is arranged in each sub-pixel; the display area comprises a conventional display area and an irregular display area which are adjacent, the irregular display area is positioned at the edge of the conventional display area, and the area of a single pixel opening of at least part of sub-pixels in the irregular display area is smaller than that of the single pixel opening in the conventional display area. As described in detail below.
With the widespread use of electronic devices having display panels, the demands of consumers on the display panels are increasing, including the demands on the display appearances of the display panels. In order to meet the demands of consumers and have sufficient market competitiveness, manufacturers design display panels with rounded display edges, so that the display appearance of the display panel is different from that of a conventional rectangular display area, and instead, the corner positions of the display edges are rounded instead of the conventional right-angle design, thereby making the display panel stand in appearance to meet the increasing demands of consumers on the display appearance of the display panel.
The display panel with the display area having the circular arc chamfer means that the display area of the display panel has a circular arc contour line at the chamfer, and pixels or sub-pixels at the chamfer are arranged along the contour line to fit the shape of the contour line. Because the contour lines at the chamfer angles are arc-shaped, the arrangement structure of pixels or sub-pixels arranged along the contour lines for fitting the shape of the contour lines usually presents a step shape or a saw-tooth shape. Therefore, when the pixels or sub-pixels in the display panel emit light with the same light intensity, the pixels or sub-pixels at the chamfered edge of the display area of the display panel cause the chamfered edge of the display area to be in a step shape or a saw-tooth shape and have strong saw-tooth feeling, which causes adverse effects on the display effect of the display panel and is not beneficial to improving the use experience of users.
In view of the above, an embodiment of the invention provides a display panel capable of reducing a jaggy feeling of an edge of a display area of the display panel, which is described in detail below.
Referring to fig. 1, fig. 1 is a schematic partial structure diagram of a display panel according to a first embodiment of the invention.
In one embodiment, the display panel includes a display area 1 (also referred to as AA area), and the display area 1 is a human-computer interaction window presented to the user by the display panel. A plurality of sub-pixels 2 arranged in an array form are disposed in the display region 1, and the display region 1 on the display panel is defined by the arrangement of the sub-pixels 2. The pixels are generally composed of red (R), green (G), and blue (B) sub-pixels, and the pixels are realized to emit light of different colors by adjusting the specific gravity of the three primary colors.
A pixel opening 21 is provided in each sub-pixel 2. For an OLED (organic light emitting diode) display panel, the pixel opening 21 may be understood as an opening region defined by a pixel defining layer (or a pixel defining layer) in the display panel for forming a light emitting structure. The size (e.g., area) of the pixel aperture 21 has an important influence on the emission intensity of the sub-pixel 2.
The display area 1 comprises a conventional display area 11 and an irregular display area 12 which are adjacent, and the irregular display area 12 is positioned at the edge of the conventional display area 11. The regular display area 11 is defined as a regular figure whose display area 1 appears as a rectangle or is composed of several rectangular sides and side-by-side borders. The irregular display area 12 is defined as a display area having at least one edge whose contour is non-linear (in this embodiment, the contour of the outer edge 121 of the irregular display area 12 is non-linear), and may be, for example, an arc as described above. The sub-pixels 2 in the irregular display area 12 are arranged in a staircase or zigzag pattern for fitting the non-linear edge contour. Fig. 1 shows a case where the edge contour of the irregular display area 12 is a circular arc shape, and the irregular display area 12 is located at a corner position of the edge of the conventional display area 11, so that the display area of the display panel has a circular arc-shaped chamfered design in appearance.
It should be noted that the area of the single pixel opening 21 of at least part of the sub-pixels 2 in the special-shaped display region 12 in the present embodiment is smaller than the area of the single pixel opening 21 in the conventional display region 11. In this way, the luminous intensity of the sub-pixels 2 in the special-shaped display area 12 is lower than that of the sub-pixels 2 in the normal display area 11, so that the luminous intensity of the special-shaped display area 12 is lower than that of the sub-pixels 2 in the normal display area 11 (at least, the luminous intensity of the sub-pixels 2 arranged in a stair-shaped or zigzag shape is reduced), and the jaggy feeling of the edge of the display area 1 of the display panel is reduced.
Referring to fig. 2, fig. 2 is a schematic partial structure diagram of a display panel according to a second embodiment of the invention.
In one embodiment, the sub-pixels 2 in the display region 1 are arranged in an array along the row direction and the column direction. In the odd-shaped display area 12, at least some of the sub-pixels 2 located in the same row and/or the same column are divided into at least one transition pixel group 22. The area of the single pixel opening 21 in each sub-pixel 2 in the transition pixel group 22 is gradually reduced along the direction away from the conventional display area 11, so that the display uniformity of the special-shaped display area 12 is improved on the basis that the area of the single pixel opening 21 in the special-shaped display area 12 is smaller than the area of the single pixel opening 21 in the conventional display area 11, and the light intensity of the sub-pixels 2 in the special-shaped display area 12 is reduced. The area of the single pixel opening 21 in each sub-pixel 2 in the transition pixel group 22 is gradually reduced along the direction far away from the normal display area 11, instead of sudden change, so that the display uniformity of the special-shaped display area 12 can be ensured, and the situation that the difference of the luminous intensity of the adjacent sub-pixels 2 is large and the display unevenness is macroscopically caused due to the large difference of the areas of the pixel openings 21 of the adjacent sub-pixels 2 is avoided. For example, when the area of the pixel aperture 21 in each sub-pixel 2 in the transition pixel group 22 decreases in an equal difference manner in a direction away from the normal display region 11, the difference in area of the pixel aperture 21 between the adjacent red (or green or blue) sub-pixels 2 in the transition pixel group 22 is 20% of the area of the pixel aperture 21 of the red sub-pixel 2 in the normal display region 11. Through the mode, the transition of the display effect of the special-shaped display area 12 is smoother macroscopically, and the condition that the display in the special-shaped display area 12 is uneven can be almost avoided.
In an embodiment, the area of the pixel aperture 21 in each sub-pixel 2 in the transition pixel group 22 may also decrease proportionally in a direction away from the normal display area 11. The proportionally decreasing means that the area of the pixel aperture 21 in each sub-pixel 2 in the transition pixel group 22 decreases in turn in a direction away from the regular display area 11 by a certain common ratio α, preferably 5%, 10%, 20%, etc. For example, in the N sub-pixels of the transition pixel group 22 (N is an integer not less than 2), and in a direction away from the normal display region 11, the pixel opening area of the nth sub-pixel is S N The pixel aperture area of the N-1 st sub-pixel is S N-1 (the Nth sub-pixel is far from the normal display region 11 with respect to the (N-1) th sub-pixel), wherein S N ＝S N-1 *(1-α)，(0<α<1). Thus, on the premise of weakening the jaggy feeling of the edge of the display area 1, the display area is regularThe arrangement of the sub-pixels 2 is more beneficial to the arrangement of the sub-pixels 2 and the design work of the corresponding mask plate.
In the above-mentioned embodiment of the proportional decrease, the proportional decrease is understood as that the area difference of the pixel opening 21 between the sub-pixel 2 and the next sub-pixel 2 along the decreasing direction of the area of the pixel opening 21 is obtained by multiplying the above-mentioned common ratio based on the area of the sub-pixel 2 in the transition pixel group 22. Specifically, of the N sub-pixels of the transition pixel group 22 (N is an integer not less than 2), and in the direction away from the normal display region 11, the pixel openings of the adjacent nth red (may also be green or blue) sub-pixel and the N-1 st red sub-pixel have the areas S, respectively N 、S N-1 In which S is N ＝S N-1 (1-α)，(0<α<1). At this time, since the area of the pixel aperture 21 of each sub-pixel 2 is gradually reduced and the area values corresponding to the same ratio are different, the proportional decrease in this case is not an arithmetic decrease. In this way, the luminous intensity of the special-shaped display area 12 can be made smaller than that of the sub-pixels 2 in the conventional display area 11, and the jaggy feeling of the edge of the display area 1 of the display panel is reduced. Meanwhile, the transition of the display effect of the special-shaped display area 12 is smoother, which is beneficial to improving the display uniformity of the special-shaped display area 12. In addition, regular arrangement of the sub-pixels 2 is more beneficial to arrangement of the sub-pixels 2 and design work of corresponding mask plates.
Further, in the transition pixel group 22, the difference in the areas of the pixel openings 21 of the adjacent sub-pixels 2 located in the same row and/or the same column is not larger than the threshold value. The threshold is defined as the maximum pixel aperture 21 area difference allowed to ensure that the shaped display area 12 displays uniformity. The area difference of the pixel openings 21 of the adjacent sub-pixels 2 in the same row and/or the same column in the transition pixel group 22 is not larger than the threshold value, i.e. is smaller than or equal to the threshold value, so as to avoid the problem that the area difference of the pixel openings 21 of the adjacent sub-pixels 2 is too large to cause display unevenness.
It should be noted that, in the same group of transition pixel groups 22, the difference in the areas of the pixel openings 21 of the adjacent sub-pixels 2 located in the same row and/or the same column is not greater than the threshold value. In the different sets of transition pixel groups 22, the difference in area of the pixel openings 21 of the adjacent sub-pixels 2 also needs to be not greater than the threshold value. That is, the difference in the areas of the pixel openings 21 of the adjacent sub-pixels 2 located in the same row and/or the same column in the irregularly shaped display area 12 is not greater than the threshold value.
Of course, in other embodiments of the present invention, for the sub-pixels 2 with reduced areas of the pixel openings 21 in the irregular display area 12, the area difference of the pixel openings 21 between the adjacent sub-pixels 2 may not be a fixed value or have a certain rule, and may be any value, but it needs to satisfy not greater than the threshold.
Specifically, the above threshold value is 20% of the area of the pixel opening 21 of the sub-pixel 2 in the normal display region 11. That is, in the transition pixel group 22, the difference in the area of the pixel openings 21 of the adjacent sub-pixels 2 located in the same row and/or the same column is not more than 20% of the area of the pixel openings 21 of the sub-pixels 2 in the normal display region 11.
It should be noted that, on the premise that the areas of the pixel openings 21 in the sub-pixels 2 in the transition pixel group 22 are gradually decreased in the direction away from the normal display region 11, it is also required that the difference in the areas of the pixel openings 21 of the adjacent sub-pixels 2 located in the same row and/or the same column is not greater than the threshold value. Therefore, there is a case where the area of the pixel opening 21 of the adjacent sub-pixel 2 located in the same row and/or the same column in the irregular-shaped display area 12 is not gradually decreased in the direction away from the regular display area 11, and even the area of the pixel opening 21 of the adjacent sub-pixel 2 is increased in the direction away from the regular display area 11. This occurs more often between adjacent sub-pixels 2 of the same row and/or column and belonging to different sets of transition pixels 22. As shown in fig. 2, on the same row, the sub-pixel A1 in the transition pixel group a is adjacent to the sub-pixel B1 in the transition pixel group B, and the sub-pixel A1 in the transition pixel group a is close to the normal display region 11 relative to the sub-pixel B1 in the transition pixel group B, and the area of the pixel opening 21 of the sub-pixel A1 in the row direction where the two are located and in the direction away from the normal display region 11 is smaller than the area of the pixel opening 21 of the sub-pixel B1.
Referring to fig. 3, fig. 3 is a schematic partial structure diagram of a display panel according to a third embodiment of the invention.
In an embodiment, the center-to-center distance between adjacent sub-pixels 2 in the shaped display area 12 is equal to the center-to-center distance between corresponding adjacent sub-pixels 2 in the regular display area 11. That is, the center-to-center distance between the adjacent red sub-pixels and green sub-pixels in the shaped display region 12 is equal to the center-to-center distance between the adjacent red sub-pixels and green sub-pixels in the regular display region 11; the center distance between the adjacent red sub-pixels and blue sub-pixels in the special-shaped display area 12 is equal to the center distance between the adjacent red sub-pixels and blue sub-pixels in the conventional display area 11; the center-to-center distance between the adjacent green and blue sub-pixels in the abnormal-shaped display area 12 is equal to the center-to-center distance between the adjacent green and blue sub-pixels in the conventional display area 11. Fig. 3 shows a case where a center-to-center distance D1 between adjacent red and green sub-pixels R and G in the irregular display area 12 is equal to a center-to-center distance D1 between adjacent red and green sub-pixels R and G in the conventional display area 11.
That is, although the area of each sub-pixel 2 in the irregular display region 12 is gradually reduced in a direction away from the regular display region 11 (in which at least the area of the pixel opening 21 in the sub-pixel 2 is gradually reduced in a direction away from the regular display region 11), the reduced sub-pixels 2 are each reduced in a certain ratio centered on the center of the original sub-pixel 2 (the reduction ratio may be a ratio of the reduced ratio explained in the above-mentioned embodiment). Therefore, on the premise of weakening the jaggy feeling of the edge of the display area 1, the original design of the pixel circuit is not required to be changed, which is beneficial to reducing the cost of the display panel. If the reduced sub-pixel 2 is not reduced with the center of the original sub-pixel as the center, that is, the center of the reduced sub-pixel 2 is deviated from the center of the original sub-pixel, the pixel circuit corresponding to the sub-pixel 2 needs to be shifted correspondingly, which requires to re-program the pixel circuit, and the cost of the display panel is undoubtedly increased.
Furthermore, the sub-pixels 2 of the irregular display area 12 are preferably 4-5 rows and/or columns of sub-pixels 2 far away from the regular display area 11, and are reduced by a certain proportion by taking the center of the original design as the center, so as to reduce the luminous intensity of the irregular display area 12 and further reduce the saw tooth feeling of the edge of the display area 1 of the display panel.
It should be noted that the sub-pixels 2 in the irregular display region 12 are gradually reduced in the direction away from the regular display region 11. Correspondingly, the mask area on the mask for preparing the sub-pixels 2 is also adjusted correspondingly.
Referring to fig. 4, fig. 4 is a schematic partial structure diagram of a display panel according to a fourth embodiment of the invention.
In one embodiment, the area of the single pixel opening 21 in each sub-pixel 2 in the shaped display region 12 is smaller than the area of the single pixel opening 21 in each sub-pixel 2 in the regular display region 11, but the number of pixel openings 21 in each sub-pixel 2 in the shaped display region 12 is larger than the number of pixel openings 21 in each sub-pixel 2 in the regular display region 11.
Typically, only one pixel is open in one sub-pixel. In contrast, each sub-pixel 2 in the irregular-shaped display region 12 of the present embodiment has a plurality of pixel openings 21 having the same emission color. While there is still only one pixel opening 21 in each sub-pixel 2 in the conventional display area 11.
That is, the area of the single pixel opening 21 within each sub-pixel 2 in the irregularly shaped display region 12 is reduced, but the number of pixel openings 21 is increased, as compared with the conventional display region 11. The area of the single pixel opening 21 is reduced, so that the pixel openings 21 in the sub-pixels 2 can be arranged along the contour line of the outer edge 121 of the special-shaped display area 12 as much as possible, the contour line of the outer edge 121 of the special-shaped display area 12 can be better fitted, and the jaggy feeling of the edge of the display area 1 is reduced. For example, the pixel opening 21 may be rounded to follow the shape of the curved outer edge 121 of the shaped display area 12. The increased number of pixel openings 21 in each sub-pixel 2 enables each sub-pixel 2 to have a sufficient light-emitting area to ensure the normal light-emitting function of the sub-pixel 2.
Further, in the irregular display region 12, the number of pixel openings 21 in the sub-pixel 2 distant from the regular display region 11 is larger than the number of pixel openings 21 in the sub-pixel 2 close to the regular display region 11. By the above way, the effect of the pixel opening 21 of the sub-pixel 2 fitting the contour line of the outer edge 121 of the special-shaped display area 12 can be improved, and the jaggy feeling can be further reduced.
Further, the number of pixel openings 21 in each sub-pixel 2 in the irregular display area 12 is gradually increased in a direction away from the regular display area 11. Since the closer to the outer edge of the irregular display region 12, the pixel openings 21 in the sub-pixels 2 are required to be arranged closer to the shape corresponding to the contour line of the outer edge 121 of the irregular display region 12, the number of the pixel openings 21 in each sub-pixel 2 in the irregular display region 12 gradually increases along the direction away from the regular display region 11, i.e., the more the number of the pixel openings 21 in the sub-pixels 2 farther away from the regular display region 11, the more it is possible to allow the sub-pixels to fit the shape corresponding to the contour line of the outer edge 121 of the irregular display region 12 as much as possible. Moreover, the number of the pixel openings 21 in each sub-pixel 2 in the special-shaped display area 12 is not increased suddenly, but is increased gradually along the direction away from the normal display area 11, and the fitting effect of the sub-pixels 2 on the contour line of the outer edge 121 of the special-shaped display area 12 is further improved by means of gradual transition, so that the saw-tooth feeling is reduced.
Correspondingly, the area of the single pixel opening 21 within each sub-pixel 2 in the special-shaped display region 12 gradually decreases in a direction away from the normal display region 11, so that the total area of the pixel openings 21 of each sub-pixel 2 in the special-shaped display region 12 is equal to or smaller than the total area of the pixel openings 21 of each sub-pixel 2 in the normal display region 11. It should be noted that the case where the total area of the pixel openings 21 of the sub-pixels 2 in the irregular display region 12 is larger than the total area of the pixel openings 21 of the sub-pixels 2 in the regular display region 11 is disadvantageous to reduce the jaggy feeling of the edge of the display region 1. The total area of the pixel openings 21 of the sub-pixels 2 in the special-shaped display area 12 is equal to the total area of the pixel openings 21 of the sub-pixels 2 in the conventional display area 11, so that the sub-pixels 2 in the special-shaped display area 12 can have enough light-emitting areas and can emit light normally; and because the number of the pixel openings 21 in the sub-pixel 2 is increased, the contour line of the outer edge 121 of the special-shaped display area 12 can be well fitted, and the effect of reducing the saw-tooth feeling of the edge of the display area 1 can be achieved without reducing the luminous intensity of the sub-pixel 2. And the total area of the pixel openings 21 of the sub-pixels 2 in the special-shaped display area 12 is smaller than the total area of the pixel openings 21 of the sub-pixels 2 in the normal display area 11, so that the luminous intensity of the sub-pixels 2 in the special-shaped display area 12 can be further reduced on the basis, and the sawtooth feeling of the edge of the display area 1 can be further reduced.
Alternatively, the difference in the number of pixel openings 21 between adjacent sub-pixels 2 in the shaped display area 12 is preferably not more than 3, such as 1, 2, etc. For example, in the adjacent sub-pixels E and F, the number of pixel openings in the sub-pixel E is 2, the number of pixel openings in the sub-pixel F is 3, and the difference between the numbers of pixel openings in the sub-pixels E and F is 1, as shown in fig. 4. And the number of rows or columns in which the number of pixel openings 21 is increased is preferably not less than 2, e.g., 3, 4, etc. The inventors have found that the sub-pixels 2 in the irregular display area 12 are designed to improve the effect of the pixel openings 21 fitting the contour of the outer edge 121 of the irregular display area 12, improve the display uniformity of the irregular display area 12 and facilitate the layout of the sub-pixels 2.
Optionally, the shape of the pixel opening 21 in each sub-pixel 2 in the irregular display area 12 may be selected from a circle, an ellipse, and any polygon such as a triangle, a quadrangle, a pentagon, etc., as required, so as to better fit the contour line of the outer edge 121 of the irregular display area 12 through the pixel opening 21.
Referring to fig. 5, fig. 5 is a schematic partial structure diagram of a display panel according to a fifth embodiment of the present invention.
In one embodiment, the sub-pixels 2 in the display region 1 are arranged in an array along the row direction and the column direction. In the normal display region 11, the sub-pixels 2 corresponding to the three primary colors of red, green and blue constitute a first-type pixel unit 111. In the special-shaped display area 12, the sub-pixels 2 corresponding to the three primary colors of red, green and blue constitute a second type of pixel unit 122. The size of the second type of pixel unit 122 is smaller than the size of the first type of pixel unit 111, so as to reduce the light emitting intensity of the second type of pixel unit 122 in the special-shaped display area 12, thereby reducing the light emitting intensity of the special-shaped display area 12, and further reducing the jaggy feeling of the edge of the display area.
Further, at the edge of the regular display region 11, a plurality of first-type pixel units 111 are formed as a stair structure 112, and a second-type pixel unit 122 is located in a concave portion 113 of the stair structure 112, typically, the stair structure 112 has a plurality of concave portions 113. By filling the second-type pixel unit 122 with smaller size in the concave part 113 of the stair structure 112 formed by the first-type pixel unit 111, the concave part 113 of the stair structure 112 can emit light and correspondingly display, so that the jaggy feeling of the edge of the display area is further reduced on the basis of reducing the luminous intensity of the special-shaped display area 12.
The area of each recess 113 of the stair-step structure 112 is not sufficient to design therein a pixel cell (composed of RGB three-color sub-pixels 22, such as the first-type pixel cell 111 described above) of conventional size. I.e., the area of each recess 113 of the stair-step structure 112 is smaller than the area required for a conventionally sized pixel cell. In the conventional design, the concave portion 113 of the step structure 112 cannot be applied to the light emitting display, resulting in a severe jaggy feeling at the edge of the special-shaped display region 12.
In view of this, the present embodiment provides at least the sub-pixels 2 having the reduced size of the pixel openings 21 therein, i.e., the smaller size of the pixel units of the second type, at the respective inner recesses 113 of the staircase structure of the conventional display region 11. In this way, the concave part of the stepped structure can be applied to light emitting display to improve the saw tooth feeling of the edge of the special-shaped display area 12.
Further, the second type of pixel unit is a full pixel structure (composed of RGB three-color sub-pixels). Meanwhile, the size of the second type of pixel unit is determined by the size of the concave 113 where the second type of pixel unit is located, so that the concave of the stepped structure is fully utilized to participate in light emitting display, and the saw tooth feeling of the edge of the special-shaped display area 12, namely the saw tooth feeling of the edge of the display area 1 of the display panel, is further improved.
The pixel arrangement of the sub-pixels 2 in the second type of pixel unit may be the same as the pixel arrangement of the sub-pixels 2 in the first type of pixel unit, and may include a form of sharing pixels or not sharing pixels, and the like. However, the sub-pixel 2 in the second type of pixel unit and the sub-pixel 2 in the first type of pixel unit may not have a common-pixel relationship therebetween, so as not to affect the display effect of the display panel. Of course, the pixel arrangement of the sub-pixels 2 in the second type of pixel unit may also be different from the pixel arrangement of the sub-pixels 2 in the first type of pixel unit, as long as the sub-pixels 2 in the second type of pixel unit can emit light to display as required. The sizes of the second type pixel units in the respective concave portions 113 of the stair structure may be the same or different, and are not limited herein.
Referring to fig. 6, fig. 6 is a schematic partial structure diagram of a display panel according to a sixth embodiment of the present disclosure.
In an alternative embodiment, in the second-type pixel unit 122 located in the inner recess 113 of the stair-step structure 112, the size of the pixel opening 21 in each sub-pixel 2 is gradually decreased in a direction away from the regular display region 11. Through the mode, the display uniformity of the special-shaped display area 12 can be improved, so that the display effect transition of the special-shaped display area 12 is smoother, and the condition that the display in the special-shaped display area 12 is uneven can be almost avoided.
In summary, in the display panel provided by the present invention, the area of the single pixel opening of at least part of the sub-pixels in the special-shaped display region is smaller than the area of the single pixel opening in the conventional display region, so that the light emitting intensity of the sub-pixels in the special-shaped display region is lower than the light emitting intensity of the sub-pixels in the conventional display region, thereby reducing the light emitting intensity of the special-shaped display region, and further reducing the jaggy feeling of the edge of the display region of the display panel.
Referring to fig. 7, fig. 7 is a schematic structural diagram of a display device according to an embodiment of the invention.
In an embodiment, the display device 3 includes a driving circuit 31 and a display panel 32, wherein the driving circuit 31 is coupled to the display panel 32 for driving the display panel 32 to implement its display function. The display panel 32 is the display panel described in the above embodiments, and is not described herein again.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present specification and drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (6)
1. A display panel, comprising:
the display device comprises a display area, a plurality of sub-pixels and a plurality of pixel units, wherein the plurality of sub-pixels are arranged in an array form and a pixel opening is arranged in each sub-pixel;
the display area comprises a conventional display area and an irregular display area which are adjacent, the irregular display area is positioned at the edge of the conventional display area, and the area of a single pixel opening of at least part of the sub-pixels in the irregular display area is smaller than that of the single pixel opening in the conventional display area;
the special-shaped display area is provided with a plurality of pixel openings with the same light-emitting color in each sub-pixel, the number of the pixel openings in each sub-pixel in the special-shaped display area is larger than that of the pixel openings in each sub-pixel in the conventional display area, the number of the pixel openings in each sub-pixel in the special-shaped display area is gradually increased along the direction far away from the conventional display area, and the number of the pixel openings in each sub-pixel in the special-shaped display area is gradually transited along the direction far away from the conventional display area and is not abrupt;
the center distance between adjacent sub-pixels in the special-shaped display area is equal to the center distance between corresponding adjacent sub-pixels in the conventional display area;
in the special-shaped display area, the area of single pixel openings in at least part of the sub-pixels in the same row and/or the same column is reduced in an equal proportion along the direction far away from the conventional display area, and the equal proportion is reduced by a certain common ratio alpha along the direction far away from the conventional display area.
2. The display panel according to claim 1, wherein in the irregular display regions, the difference in area of the pixel openings of the adjacent sub-pixels positioned in the same row and/or the same column is less than or equal to 20% of the area of the pixel openings of the sub-pixels in the regular display regions.
3. The display panel according to claim 1, wherein in the irregular display region, the total area of the pixel openings of the sub-pixels is equal to or smaller than the total area of the pixel openings of the sub-pixels in the regular display region.
4. The display panel according to claim 1, wherein in the regular display region, the sub-pixels corresponding to the three primary colors of red, green and blue constitute a first type of pixel unit, and in the irregular display region, the sub-pixels corresponding to the three primary colors of red, green and blue constitute a second type of pixel unit, and the size of the second type of pixel unit is smaller than that of the first type of pixel unit.
5. The display panel according to claim 4, wherein a plurality of the first type pixel cells are formed in a stair structure at the edge of the normal display area, and the second type pixel cells are located at inner recesses of the stair structure.
6. A display device, comprising a driving circuit and the display panel of any one of claims 1 to 5, wherein the driving circuit is coupled to the display panel for driving the display panel to realize its display function.
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| CN110928024B (en) * | 2019-11-26 | 2021-07-23 | 武汉华星光电技术有限公司 | Display panel and display device |
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| CN208271899U (en) * | 2018-05-14 | 2018-12-21 | 昆山国显光电有限公司 | Display screen and display device |
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