CN111477111A - Display panel and display device - Google Patents
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- CN111477111A CN111477111A CN202010430697.1A CN202010430697A CN111477111A CN 111477111 A CN111477111 A CN 111477111A CN 202010430697 A CN202010430697 A CN 202010430697A CN 111477111 A CN111477111 A CN 111477111A
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Abstract
The invention discloses a display panel and a display device, wherein along the bending direction of an auxiliary display area, the brightness attenuation of first color sub-pixels under different angles is inconsistent, so that the orthographic projection of the first color sub-pixels on a substrate is provided with a first boundary close to one side of a plane display area, the orthographic projection of a grid where the first color sub-pixels are located on the substrate is provided with a second boundary adjacent to the first boundary, the second boundary is positioned at one side of the first boundary close to the display area, the distance between the first boundary and the second boundary is D1, the light intensity of the first color sub-pixels under different bending angles is changed by setting the distance between a light shading element and a pixel opening in the first color sub-pixels, namely D1, under different bending angles, the color cast caused by the inconsistent brightness attenuation of each sub-pixel is improved, and the display uniformity of the auxiliary display area under a positive viewing angle is improved, the display quality of the panel is improved.
Description
Technical Field
The present invention relates to the field of display, and particularly to a display panel and a display device.
Background
Display technologies are widely used in the fields of televisions, mobile phones, and public displays, and display panels for displaying pictures are also diversified. Along with the development of displays, pictures which can be displayed by the displays are more and more abundant, and the displays are developing towards thin and light directions such as narrow frames, high contrast, high resolution, full-color display, low power consumption, high reliability, long service life and the like. In addition, the development of flexible display greatly enriches the requirements of people on display pictures, and for the bendable flexible display, pictures can be displayed in a bending area, so that the flexible display has higher screen occupation ratio and narrower frame, and the user experience is greatly improved.
However, under a normal viewing angle, the brightness of the curved region changes with the change of the curved viewing angle, and a color shift phenomenon occurs, so that the display effect is reduced. Therefore, the problem of improving the color shift in the bending region is a problem to be solved by those skilled in the art.
Disclosure of Invention
The embodiment of the invention provides a display panel and a display device, which are used for solving the problem of color cast of a bent display area in the prior art.
In a first aspect, an embodiment of the present invention provides a display panel, where the display panel includes a planar display area and at least one auxiliary display area, where the auxiliary display area is located on one side of the planar display area and is bent in a direction away from a light exit surface of the planar display area, and has a plurality of bending angles, where the bending angles are included angles between a normal line of the auxiliary display area and a normal line of the planar display area; the auxiliary display area includes:
a substrate base plate;
the display function layer is positioned on one side, facing the light emitting surface, of the substrate base plate and comprises a plurality of pixels, each pixel comprises a plurality of sub-pixels, and each sub-pixel comprises a first color sub-pixel;
the shading element is positioned on one side, away from the bottom sinking substrate, of the display function layer and comprises a plurality of grid lines; the orthographic projection of the grid lines on the substrate base plate is positioned between the adjacent sub-pixel opening areas;
along the bending direction of the auxiliary display area, the orthographic projection of the first color sub-pixel on the substrate base plate has a first boundary close to one side of the planar display area, the orthographic projection of the grid where the first color sub-pixel is located on the substrate base plate has a second boundary adjacent to the first boundary, the second boundary is located on one side of the first boundary close to the display area, and the distance between the first boundary and the second boundary is D1, wherein:
d1 is positively correlated with the bend angle;
in a second aspect, an embodiment of the present invention provides a display device, including the display panel described in the first aspect.
In the embodiment of the present invention, since the luminance decays at different angles of the first color sub-pixel are not uniform along the bending direction of the auxiliary display area, the orthographic projection of the first color sub-pixel on the substrate is set to have a first boundary close to one side of the planar display area, the orthographic projection of the grid where the first color sub-pixel is located on the substrate has a second boundary adjacent to the first boundary, the second boundary is located on one side of the first boundary close to the display area, and the distance between the first boundary and the second boundary is D1, wherein: d1 is positively correlated with the bend angle; through under different bending angles, the distance between the shading element and the pixel opening in the first color sub-pixel, namely the difference of D1, is set, the light intensity of the first color sub-pixel under different bending angles is changed, and the color cast caused by inconsistent brightness attenuation of each sub-pixel is improved, so that the display uniformity of the auxiliary display area under the display panel is observed at the front view angle, the display quality of the panel is improved, and the use experience of a user is improved.
The features and advantages of the present invention will become more apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.
Drawings
Fig. 1 is a schematic structural diagram of a display panel according to an embodiment of the present invention;
fig. 2 is a schematic top view of a display panel according to an embodiment of the present invention;
FIG. 3 is an enlarged schematic view of the area S1 in FIG. 2;
FIG. 4 is a schematic cross-sectional view of BB' in FIG. 3;
FIG. 5 is a graph illustrating luminance attenuation ratio and a curve illustrating a variation of a bending angle of a first color sub-pixel blocked by a grid line under a first gradient and a second gradient according to an embodiment of the present invention;
FIG. 6 is a graph illustrating a luminance attenuation ratio and a curve of a bend angle variation of a first color sub-pixel blocked by a grid line under a third gradient according to an embodiment of the present invention;
fig. 7 is a schematic view of an auxiliary display area structure of a display panel according to an embodiment of the present invention;
FIG. 8 is a schematic diagram of an auxiliary display area of another display panel according to an embodiment of the present invention;
fig. 9 is a schematic view of an auxiliary display area structure of another display panel according to an embodiment of the present invention;
FIG. 10 is a schematic cross-sectional view of BB' in FIG. 3;
fig. 11 is a schematic structural diagram of a display device according to an embodiment of the present invention.
Detailed Description
A detailed description will be given below of a specific implementation of a display panel and a display device according to an embodiment of the present invention with reference to the accompanying drawings. It should be noted that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The inventor has found that, according to the conventional product, when viewing a screen in a front view, that is, when viewing an image displayed in a display region along a direction perpendicular to a planar display region (that is, along a direction indicated by an arrow in fig. 1), an auxiliary display region is in a viewing range of a large viewing angle, and at this time, luminance attenuation of each color of the auxiliary display region at different angles is inconsistent, so that a color shift of a curved display region at the large viewing angle is caused, that is, the display region is displayed unevenly at the large viewing angle, that is, a visual difference is caused, but a large viewing angle optimization may cause a color shift at a small viewing angle to be deteriorated due to a simple debugging of a microcavity structure, so that the defect that the color shift can be improved by only microcavity adjustment of an organic light emitting (E L.
Based on this, the present invention provides a display panel, fig. 1 is a schematic structural diagram of a display panel provided in an embodiment of the present invention, fig. 2 is a schematic structural diagram of a top view of a display panel provided in an embodiment of the present invention, fig. 3 is an enlarged structural diagram of an area S1 in fig. 2, referring to fig. 1, fig. 2 and fig. 3, the display panel includes a planar display area a1 and at least one auxiliary display area a2, the auxiliary display area a2 is located on one side of the planar display area a1, and is bent in a direction away from a light exit surface of the planar display area, and has a plurality of bending angles θ 1, the bending angles θ 1 are included angles between a normal Nl2 where the auxiliary display area is located and a normal Nl1 where the planar display area is located, and along a bending direction of the display panel, the bending angles θ 1 range from 0 ° to θ n (θ n is less than or equal to 90 °), the definitions of θ 1 and θ n appearing hereinafter are the same as those herein, and will not be described in detail later. Fig. 1 shows only one structure of the display panel, and in other embodiments, of course, three or more auxiliary display areas a2 may be included, and the auxiliary display areas a2 are used for displaying, so as to increase the area of the display area, and implement a high screen ratio and a narrow bezel design, which is not limited by the invention. The auxiliary display area a2 comprises a substrate base plate 01 and a display function layer 02, the display function layer 02 is positioned on one side of the substrate base plate 01 facing a light emergent surface, the display function layer 02 comprises a plurality of pixels P0, the pixels P0 comprise a plurality of sub-pixels P00, and the sub-pixels P00 comprise first color sub-pixels P01; fig. 4 is a schematic cross-sectional view of BB' in fig. 3, and referring to fig. 4 in combination with fig. 1 to 3, the auxiliary display area a2 may further include a light shielding element 03, the light shielding element 03 is located on a side of the display functional layer 02 away from the substrate 01, and the light shielding element 03 includes a plurality of grid lines 030; grid lines 030 are positioned between opening areas of adjacent sub-pixels P00 in the orthographic projection of the substrate base plate, and the first color sub-pixel P00 is positioned in a grid surrounded by the grid lines 030 along the direction perpendicular to the substrate base plate; along the bending direction of the auxiliary display area a2, the orthographic projection of the first color sub-pixel P01 on the substrate base plate 01 has a first boundary B1 close to one side of the planar display area, the orthographic projection of the grid on which the first color sub-pixel P01 is located on the substrate base plate 01 has a second boundary B2 adjacent to the first boundary B1, the second boundary B2 is located on one side of the first boundary B1 close to the planar display area a1, and the distance between the first boundary B1 and the second boundary B2 is D1, wherein: d1 is positively correlated with the bend angle θ 1.
In the embodiment of the present invention, the substrate 01 may be a hard glass substrate or a flexible plastic substrate, and the embodiment is not particularly limited. In addition, in the present embodiment, only the sub-pixel P00 is described as a rectangle, and the shape of the sub-pixel P00 may be various, for example, a circle, a quadrangle, or another polygonal shape. The display panel may further include a pixel defining layer 05 located on a side of the substrate 01 facing the light blocking member 03, the plurality of sub-pixels P00 being located within openings of the pixel defining layer 05, and an orthogonal projection of the light blocking member 03 on the substrate 01 being located within an orthogonal projection of the pixel defining layer 05 on the substrate 01. The sub-pixel P00 may further include a cathode, an anode, an organic light emitting unit, and the like, and the display panel may be an organic light emitting panel. In other embodiments, the display panel may also be a liquid crystal display panel, and the invention is not limited thereto.
The inventors have found, through research, that the luminance decays differently at different bending angles θ 1 due to the differences of different microcavity systems and materials of the first color sub-pixel P01, as shown in table 1 (see D1 in the table, i.e. the distance between the first boundary B1 and the second boundary B2):
| D1 | bending angle theta 1 corresponding to large brightness attenuation |
| 2.24 | 15° |
| 5.26 | 30° |
| 10.25 | 65° |
TABLE 1
Further, the inventors further studied the relationship between the luminance attenuation ratio and the bending angle generated by the grid line 030 blocking the first color sub-pixel P01. For example, due to the difference in materials and processes used by the sub-pixels P00 with different colors, and the brightness attenuation degrees at the same bending angle are not the same, in the present application, the grid line 030 is used to shield the brightness influence generated by the first color sub-pixel P01 as the green sub-pixel, and the exemplary description is given by using the grid line 030 to shield the brightness influence generated by the first color sub-pixel P01 as the green sub-pixel. In the research process, it is convenient to further express the relationship of the luminance influence change generated by the grid line 030 blocking the first color sub-pixel P01, and the bending angle is divided into three gradients, namely a first gradient: a bend angle of 10 ° or less; a second gradient: a bending angle of greater than 10 ° and 60 ° or less; a third gradient: a bending angle of more than 60 deg.. As shown in fig. 5, fig. 5 is a schematic diagram of a luminance attenuation ratio and a curve of a change of a bending angle of the first color sub-pixel shielded by the grid line under the first gradient and the second gradient, and it can be seen that, under different bending angles of the first gradient, an opening distance between the grid line 030 and the first color sub-pixel P01 is adjusted, and before and after the adjustment, a luminance attenuation improvement range is small, that is, under a bending angle of 10 ° or less, a luminance attenuation degree of the first color sub-pixel P01 is small, a color cast degree is small, and under a condition that a user observes a display screen, the bending angle of 10 ° or less may not be adjusted. Of course, it is understood that if more accurate picture display effect is desired, the bending angle of 10 ° or less may be adjusted, and the present invention is not further limited. Adjusting the opening distance between grid line 030 and first color sub-pixel P01 at different bend angles in the second gradient, wherein the brightness attenuation of first color sub-pixel P01 has a certain improvement before and after adjustment, and illustratively, at a bend angle of 40 degrees, the brightness attenuation ratio of sub-pixel P00 at the bend angle is 53% before adjustment, the brightness attenuation ratio of first color sub-pixel P01 at the bend angle after adjustment is 49%, and the brightness attenuation is improved by 4% at the bend angle of 40 degrees; at a bending angle of 50 degrees, the brightness attenuation ratio of the sub-pixel P00 at the bending angle is 44% before adjustment, the brightness attenuation ratio of the first color sub-pixel P01 at the bending angle is 41% after adjustment, and the brightness attenuation is improved by 3% at the bending angle of 40 degrees; in a third gradient, as shown in fig. 6, fig. 6 is a graph illustrating a luminance attenuation ratio of the grid line shielding the first color sub-pixel and a curve illustrating a change of the bending angle under the third gradient, where it can be seen that, at different bending angles, the opening distance between the grid line 030 and the first color sub-pixel P01 is adjusted, and before and after the adjustment, the luminance attenuation of the first color sub-pixel P01 has a certain improvement, for example, at a bending angle of 70 degrees, before the adjustment, the luminance attenuation ratio of the sub-pixel P00 under the bending angle is 20%, after the adjustment, the luminance attenuation ratio of the first color sub-pixel P01 under the bending angle is 18%, and the luminance attenuation is improved by 2% at the bending angle of 70 degrees. Thus, the color shift of the curved display region a2 can be optimized by adjusting the opening distance between the grid line 030 and the first color sub-pixel P01 at different curved angles.
Therefore, by setting the first color sub-pixel P01 at different bending angles θ 1 and setting the distance D1 between the first boundary B1 and the second boundary B2 to be different, the shielding degree of the grid lines 030 to the first color sub-pixel P01 is different at different bending angles θ 1, and the color cast phenomenon of the auxiliary display area a2 is further improved. Further, studies have shown that the distance D1 between the first boundary B1 and the second boundary B2 is in positive correlation with the bending angle θ 1 in the auxiliary display area a2, i.e., the distance D1 between the first boundary B1 and the second boundary B2 increases with the increase of the bending angle θ 1 in the auxiliary display area a 2. Referring to fig. 3, exemplarily, the distance between the first boundary B1 and the second boundary B2 along the bending direction of the first color sub-pixel P01 at different bending angles θ 1 is D11, D12, D13, wherein: d11 < D12 < D13. It is understood that the distance D1 between the first boundary B1 and the second boundary B2 can be adjusted according to the actual requirement for different bending angles θ 1, and the example is not limited. With the arrangement, when the image displayed in the auxiliary display area is viewed on the front-view screen, the auxiliary display area is in the viewing range of a large viewing angle, and because the shielding degrees of the first color sub-pixel P01 at different bending angles theta 1 are inconsistent, the emergent light intensity of the first color sub-pixel P01 at different bending angles theta 1 is changed, and further the brightness attenuation of the first color sub-pixel P01 at different angles is improved, so that the difference of display pictures is reduced, the color cast phenomenon is improved, and the display quality is improved.
In some alternative embodiments, referring to fig. 7, the pixel includes a second color sub-pixel P02, and the second color sub-pixel P02 is located in a grid surrounded by grid lines 030;
along the bending direction of the auxiliary display area, the orthographic projection of the second color sub-pixel P02 on the substrate base plate 01 has a third boundary B3 close to one side of the planar display area, the orthographic projection of the grid where the second color sub-pixel P02 is located on the substrate base plate 01 has a fourth boundary B4 adjacent to the third boundary B3, the fourth boundary B4 is located on one side of the third boundary B3 close to the display area, the distance between the fourth boundary B4 and the third boundary B3 is D2, and D2 is positively correlated with the bending angle theta 1, wherein: d1 ≠ D2 for the same bending angle theta 1.
In the embodiment of the present invention, the adjustment of the second color sub-pixel P02 is further added on the basis of the adjustment of the first color sub-pixel P01. It can be understood that, the luminance attenuation is different for different microcavity systems and materials of the second color sub-pixel P02 under different bending angles θ 1, and therefore, by setting the second color under different bending angles θ 1, the distance D2 between the third boundary B3 and the fourth boundary B4 is different, that is, the shielding degree of the grid line 030 for the second color sub-pixel P02 under different bending angles θ 1 is different, and further the color shift phenomenon of the auxiliary display area a2 is further improved. The distance D2 between the third boundary B3 and the fourth boundary B4 is in positive correlation with the bending angle θ 1 in the auxiliary display area a2, i.e., the distance D2 between the third boundary B3 and the fourth boundary B4 increases with the increase of the bending angle θ 1 in the auxiliary display area a 2. Referring to fig. 7, exemplarily, the distances between the third boundary B3 and the fourth boundary B4 along the bending direction of the second color sub-pixel P02 at different bending angles θ 1 are D21, D22, and D23, respectively, where: d21 < D22 < D23. It is understood that, according to practical needs, the distance D2 between the third boundary B3 and the fourth boundary B4 can be adjusted for different bending angles θ 1, and this example is not limited. Furthermore, due to the difference between the materials of the first color sub-pixel P01 and the second color sub-pixel P02 and the manufacturing process, the luminance decays inconsistently under the same bending angle θ 1, and therefore, the distance D1 between the first boundary B1 and the second boundary B2 is not equal to the distance D2 between the third boundary B3 and the fourth boundary B4. According to the actually occurring color cast condition and the influence curve of the shielding on the brightness, the relative distance between D1 and D2 under the same bending angle theta 1 is further adjusted,
optionally, in an implementation manner, in order to implement setting of the first color sub-pixel P at different bending angles θ 1, and different distances D between the first boundary B and the second boundary B, for example, referring to fig. 3 again, along the bending direction of the auxiliary display area, the orthogonal projection of the grid where the first color sub-pixel P is located on the substrate 01 has a second pair of sides B ' opposite to the second boundary B, the second pair of sides B ' is located on the side of the second boundary B close to the plane display area a, and in the orthogonal projection of the plane display area a and the auxiliary display area a on the substrate 01, the second pair of sides B ' is at a distance (not shown) from the plane display area a, the distance D between the second pair of sides B ' and the plane display area a is kept constant, and the distance W between the second pair of sides B ' is changed to form the D according to-be-shielded distance requirements, that the distance D between the first boundary B and the second boundary B is changed, that the distance W is equal to the first boundary B, the distance W is changed, and the width of the first boundary B is further adjusted by the simple process, the width of the first color sub-pixel P is changed, and the width of the second boundary B, the width of the angle W1, and the width of the grid B is changed, and the width of the grid W1.
Alternatively, in another practical manner, in order to implement the setting of the first color sub-pixel P01 under different bending angles θ 1 and different distances D1 between the first boundary B1 and the second boundary B2, refer to fig. 8, where fig. 8 is a schematic view of an auxiliary display area structure of another display panel provided in the embodiment of the present invention. Along the bending direction of the auxiliary display area, the orthographic projection of the grid where the first color sub-pixel P01 is located on the substrate 01 has a second pair of sides B2 'opposite to a second boundary B2, the second pair of sides B2' is located on the side of the second boundary B2 close to the planar display area a1, the distance W between the second pair of sides B2 'and the second boundary B2 is kept unchanged according to the distance requirement to be shielded, and the D1 is formed by translating the second pair of sides B2' and the second boundary B2 along the bending direction of the auxiliary display area, that is, the change of the distance D1 between the first boundary B1 and the second boundary B2 is formed. It is illustrated that shifting the second pair of edges B2 'and the second boundary B2 towards the side of the flat display area increases the light intensity of the first color sub-pixel P01, it being understood that if it is desired to decrease the light intensity of the first color sub-pixel P01 relative to the flat display area a1, the second pair of edges B2' and the second boundary B2 are shifted along the side away from the flat display area a 1. In this embodiment, the distance W between the second pair of edges B2' and the second boundary B2, i.e. the line width W of the grid line 030 at the side of the flat display area a1, is not changed, so that the distance D1 between the first boundary B1 and the second boundary B2 of the first color sub-pixel P01 is correspondingly changed under different bending angles θ 1. The adjusting method in the embodiment has high flexibility, and the process is simple and easy to implement.
In some alternative embodiments, the pixel P0 includes a red pixel, a green pixel, and a blue pixel, the first color sub-pixel P01 is green, or the first color sub-pixel P01 is red. Referring again to fig. 8, for example, the first color sub-pixel P01 is red, when the user looks at the screen to view the image displayed in the auxiliary display area, the displayed image is bluish, and according to the color coordinate measured by the measured color coordinate, the red color can be adjusted to increase the intensity of the red color, thereby improving the color shift caused by the inconsistent brightness attenuation of the pixel P0. Specifically, for example, the distance W between the second pair of edges B2 'and the second boundary B2 is kept constant, and the second pair of edges B2' and the second boundary B2 are translated along the bending direction of the auxiliary display area, i.e., a change in the distance D1 between the first boundary B1 and the second boundary B2 is formed. Illustratively, the first color sub-pixel P01 has distances between the first boundary B1 and the second boundary B2 along the bending direction at different bending angles θ 1 of D11, D12 and D13, respectively, wherein: d11 < D12 < D13. It is understood that the distance D1 between the first boundary B1 and the second boundary B2 can be adjusted according to the actual requirement for different bending angles θ 1, and the example is not limited. In another alternative embodiment, the corresponding change of the distance D1 between the first boundary B1 and the second boundary B2 of the first color sub-pixel P01 at different bending angles θ 1 can be realized by changing the line width W of the grid lines 030 on the side of the flat display area a1, and the description thereof is omitted here.
Optionally, when the user views the image displayed in the auxiliary display area on the front screen, the displayed image becomes red, and according to the measured color coordinates, the red color can be adjusted to reduce the intensity of the red color, thereby improving the color shift caused by the inconsistent brightness attenuation of the pixel P0. The method is similar to the above, and is not described in detail here.
Specifically, in the forward projection of the substrate 01 on the substrate 01, the second opposite side B ' is at a distance from the plane display area a (not shown), the distance between the second opposite side B ' and the plane display area a is kept constant, the distance W between the second opposite side B ' and the second opposite side B ' is changed according to the requirement of the distance to be shielded, that is, the distance D between the first edge B and the second edge B is changed, that is, the distance W between the first color sub-pixel P and the second edge B ' is changed, that is, the distance W between the first edge B and the second edge B is changed, that is, the distance W1 and the second edge B is not changed, that the distance W between the first edge B and the second edge B is equal to the distance W1, that the distance W is equal to the distance W1, and the distance W1 is equal to the distance W1, that the distance W1 is equal to the second edge B, and the distance W1, that is equal to the distance W1.
In some alternative embodiments, the pixel P0 includes a red pixel, a green pixel, and a blue pixel, the first color sub-pixel P01 is green, and the second color sub-pixel P02 is blue. When the user watches the image displayed in the auxiliary display area in front of the screen, the displayed image is bluish, the green color can be adjusted according to the measured color coordinates, and then the blue color can be further adjusted for optimization. Referring again to fig. 7, for example, the first color sub-pixel P01 is green, and the second color sub-pixel P02 is blue. In actual manufacturing, since the generated color shift is closely related to the material and the process of the sub-pixel P00, if the specification requirement of the color shift cannot be met even when the first color sub-pixel P01 is adjusted to be green, according to the above-mentioned inventor's research on the relationship between the luminance attenuation ratio and the bending angle generated when the grid line 030 blocks the first color sub-pixel P01, the second color sub-pixel P02 is adjusted synchronously, that is, the ratio of the first color sub-pixel P01 and the second color sub-pixel P02 at a certain color shift angle is adjusted according to the relationship between the luminance attenuation ratio and the bending angle generated when the grid line 030 blocks the first color sub-pixel P01 and the second color sub-pixel P02, and the adjustment here is still any adjustment manner, which is not described herein again, so as to achieve the purpose of improving the color shift.
Optionally, fig. 9 is a schematic view of an auxiliary display area structure of another display panel provided in an embodiment of the present invention. Illustratively, referring to fig. 9, the first color sub-pixel P01 is green, the second color sub-pixel P02 is blue, and the third color sub-pixel P03 is red. In actual manufacturing, since the generated color shift is closely related to the material and process of the sub-pixel P00, if the specification requirement of color shift can not be satisfied when the first color sub-pixel P01 and the second color sub-pixel P02 are adjusted, according to the above-mentioned research of the relationship between the luminance degradation ratio and the bending angle generated by the grid line 030 blocking the first color sub-pixel P01, the third color sub-pixel P03 can be adjusted in synchronization, that is, the ratio of the first color sub-pixel P01, the second color sub-pixel P02 and the third color sub-pixel P03 under a certain color shift angle is adjusted according to the relationship between the luminance attenuation ratio and the bending angle generated by shielding the first color sub-pixel P01, the second color sub-pixel P02 and the third color sub-pixel P03 by the grid line 030, and the adjustment here is still any adjustment manner described above and is not described herein again, so that the purpose of improving the color shift is achieved.
Furthermore, in the orthographic projection of the sub-pixel P00 and the grid line 030 on the substrate 01 along the bending direction of the auxiliary display area, the inventor further studied the relationship between the opening distance of the grid line 030 and the sub-pixel P00 and the bending angle. It should be further noted that, for operability, the distance between the eyes and the panel is about 50cm, the width of the display area of the panel is generally 7-15cm, and the maximum angle of the color shift of the viewing angle in the panel is 4-9 °.
Referring to fig. 4 again, fig. 4 is a schematic cross-sectional view of BB' in fig. 3, and an encapsulation layer (not shown) is further included between the light shielding element 03 and the display functional layer 02 in fig. 4, and exemplarily includes a first inorganic layer (not shown), a first organic layer (not shown), and a second inorganic layer (not shown), and may further include other film layers, which is not limited in the present invention.
Along the bending direction of the auxiliary display area A2, the orthographic projection of the first color sub-pixel P01 on the substrate base plate 01 has a first boundary B1 close to one side of the plane display area, the orthographic projection of the grid on which the first color sub-pixel P01 is located on the substrate base plate 01 has a second boundary B2 adjacent to the first boundary B1, the second boundary B2 is located on one side of the first boundary B1 close to the plane display area A1, and the distance between the first boundary B1 and the second boundary B2 is D1; the orthographic projection of the second color sub-pixel P02 on the substrate base plate 01 is provided with a third boundary B3 close to one side of the plane display area, the orthographic projection of a grid where the second color sub-pixel P02 is located on the substrate base plate 01 is provided with a fourth boundary B4 adjacent to the third boundary B3, the fourth boundary B4 is located on one side of the third boundary B3 close to the display area, the distance between the fourth boundary B4 and the third boundary B3 is D2, the refractive index and the thickness of a film layer are traversed by a comprehensive light emitting path, theoretical simulation calculation shows that the D1 and the D2 both satisfy a unitary quadratic linear relation with a bending angle thetan, and the D1 and the D2 are both expressed by D, wherein: d comprises D1 and D2; d and the bending angle θ n satisfy the following relationship:
θn＝a*D^2+b*D+c
a. b and c are constants larger than zero; and thetan is a bending angle.
In an exemplary microcavity system, θ n obtained through theoretical calculation is 0.3615(D ' - △ X) × 2+2.9798 (D ' - △ X) +7.037, where D ' is a distance between an opening of the sub-pixel P00 and the nearest grid line 030 along the bending direction of the auxiliary display area a2, and △ X is a variation of a distance between the grid line 030 and an opening of the sub-pixel P00, so that the display effect can be improved by adjusting the color shift at different bending angles by a variation △ X from a preset value.
The inventor further researches and discovers that according to theoretical calculation and offset (offset) compensation of actual data, when D is greater than 12 micrometers, brightness attenuation is not limited by the distance between the grid line 030 and the opening of the sub-pixel P00, that is, when the distance D between the grid line 030 and the opening of the sub-pixel P00 is adjusted to be greater than 12 micrometers, the brightness attenuation improvement amplitude of the first color sub-pixel P01 is very small or even is not improved continuously, so that the first color sub-pixel P01 can be adjusted within a preset range through the relationship, and the adjustment is still the adjustment manner, which is not repeated herein, so as to achieve the purpose of improving color shift.
In some alternative embodiments, referring to fig. 3 again, along the bending direction of the auxiliary display area, the orthographic projection of the first color sub-pixel P01 on the substrate base plate 01 has a fifth boundary B5 adjacent to the first boundary B1, the orthographic projection of the grid where the first color sub-pixel P01 is located on the substrate base plate 01 has a sixth boundary B6 adjacent to the fifth boundary and having the shortest distance, and the fifth boundary B5 and the sixth boundary B6 are a fixed distance D3, wherein: d3 is more than or equal to 1 mu m and less than or equal to 15 mu m. In this embodiment, for any one of the first color sub-pixels P01 in the auxiliary display area a2, along the bending direction of the auxiliary display area, the range of the distance D3 between the fifth boundary B5 of the orthographic projection of the first color sub-pixel P01 on the substrate 01 and the sixth boundary B6 adjacent to the orthographic projection of the grid on which the first color sub-pixel P01 is located on the substrate 01 and having the shortest distance to the fifth boundary is 1 μm to 15 μm. For example, in an embodiment provided by the present invention, the distance D3 between the fifth boundary B5 of the orthographic projection of the first color sub-pixel P01 on the substrate 01 and the sixth boundary B6 adjacent to the fifth and having the shortest distance from the orthographic projection of the grid where the first color sub-pixel P01 is on the substrate 01 is 5 μm, that is, the fifth boundary B5 and the sixth boundary B6 on both sides adjacent to the first boundary B1 are both 5 μm, so that the light emitted from the first color sub-pixel P01 is not emitted in a direction completely perpendicular to the substrate 01, and the emitted light is in multiple directions, and therefore the first color sub-pixel P01 is arranged symmetrically in the non-bending direction, so that the uniformity of the display effect is better, and the light adjusted in the bending direction is not interfered. Moreover, the value of D3 should not be too small, and less than 1 μm would make the distance between the grid line 030 and the first color sub-pixel P01 too close, and the light emitted from the first color sub-pixel P01 would be blocked by the grid line 030, thereby reducing the aperture ratio of the display panel; the value of D3 should not be too large, and a value greater than 15 μm may increase the distance between the grid lines 030 and the first color sub-pixel P01, and the aperture ratio of the display panel may be reduced when the grid lines 030 need to satisfy a certain width. Therefore, the value range of D3 is set to be 1-15 μm, and the color cast is further improved on the premise of ensuring the aperture opening ratio of the display panel.
In some optional embodiments, the light shielding element 03 includes one or both of a grid-shaped touch electrode and a black matrix.
For example, fig. 4 is a schematic cross-sectional view of BB' in fig. 3, referring to fig. 4, the light shielding element 03 includes a touch electrode 031, and the touch electrode 031 is a metal material, which has good electrical conductivity but poor light transmittance. In this embodiment, the touch electrode 031 includes a grid-shaped touch electrode line, that is, the grid line 030 is a touch electrode line in this embodiment. In the figure, the touch electrode 031 is located between the cover plate 04 and the substrate 01, and is integrated inside the display panel, so that the thickness of the display panel is reduced compared with the case that the touch electrode 031 is located outside the display panel.
Alternatively, fig. 10 is another schematic cross-sectional structure diagram of BB' in fig. 3, and referring to fig. 10, the light shielding element 03 includes a grid-shaped black matrix 032. The black matrix 032 is located between the touch electrode 031 and the cover plate 04, and the vertical projection of the touch electrode 031 on the cover plate 04 is located within the vertical projection of the black matrix 032 on the cover plate 04. The black matrix 032 can be used to shield the touch electrode 031 from reflecting the external ambient light, thereby improving the display effect. In other embodiments, the light shielding element 03 may include only the black matrix 032 instead of the touch electrode 031, and the invention is not limited thereto.
Based on the same inventive concept, an embodiment of the present invention provides a display device, and fig. 11 is a schematic structural diagram of the display device according to the embodiment of the present invention. Referring to fig. 11, the display device includes any one of the display panels 100 provided in the embodiments of the present invention, and repeated descriptions are omitted. In a specific implementation, the display device may be: any product or component with a display function, such as a mobile phone (as shown in fig. 11), a tablet computer, a television, a display, a notebook computer, a digital photo frame, and a navigator.
It should be noted that the present invention is only exemplified by one auxiliary display area, and other auxiliary display areas including any number of auxiliary display areas are included in the present invention. As can be seen from the above embodiments, the display panel and the display device provided by the present invention at least achieve the following beneficial effects:
setting an orthographic projection of a first color sub-pixel on a substrate to have a first boundary close to one side of the planar display area, setting an orthographic projection of a grid where the first color sub-pixel is located on the substrate to have a second boundary adjacent to the first boundary, wherein the second boundary is located on one side of the first boundary close to the display area, and the distance between the first boundary and the second boundary is D1, wherein: d1 is positively correlated with the bend angle; under the angle of buckling through the difference promptly, shading element is different with the distance of sub-pixel open-ended in setting up the first colour sub-pixel, changes the light intensity of first colour sub-pixel, improves the colour cast that leads to because of each sub-pixel luminance decay is inconsistent to improve the demonstration homogeneity of auxiliary display area under the positive visual angle, promote panel display quality, promote user's use and experience.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. A display panel is characterized in that the display panel comprises a plane display area and at least one auxiliary display area, the auxiliary display area is positioned on one side of the plane display area and is bent towards a direction away from a light emergent surface of the plane display area, and the auxiliary display area is provided with a plurality of bending angles, and the bending angles are included angles between a normal line of the auxiliary display area and a normal line of the plane display area; the auxiliary display area includes:
a substrate base plate;
the display function layer is positioned on one side, facing the light emitting surface, of the substrate base plate and comprises a plurality of pixels, each pixel comprises a plurality of sub-pixels, and each sub-pixel comprises a first color sub-pixel;
the shading element is positioned on one side, away from the bottom sinking substrate, of the display function layer and comprises a plurality of grid lines; the orthographic projection of the grid lines on the substrate base plate is positioned between the adjacent sub-pixel opening areas;
along the bending direction of the auxiliary display area, the orthographic projection of the first color sub-pixel on the substrate base plate has a first boundary close to one side of the planar display area, the orthographic projection of the grid where the first color sub-pixel is located on the substrate base plate has a second boundary adjacent to the first boundary, the second boundary is located on one side of the first boundary close to the display area, and the distance between the first boundary and the second boundary is D1, wherein:
d1 is positively correlated with the bend angle.
2. The display panel according to claim 1,
the pixel comprises a second color sub-pixel which is positioned in a grid formed by the grid lines;
along the bending direction of the auxiliary display area, the orthographic projection of the second color sub-pixel on the substrate base plate has a third boundary close to one side of the planar display area, the orthographic projection of the grid where the second color sub-pixel is located on the substrate base plate has a fourth boundary adjacent to the third boundary, the fourth boundary is located on one side of the third boundary close to the display area, the distance between the fourth boundary and the third boundary is D2, and D2 is positively correlated with the bending angle, wherein: under the same bending angle, D1 ≠ D2.
3. The display panel according to claim 1,
and along the bending direction of the auxiliary display area, the orthographic projection of the grid where the first color sub-pixel is located on the substrate has a second opposite side opposite to the second boundary, the second opposite side is located on one side, close to the planar display area, of the second boundary, the distance between the second opposite side and the planar display area is kept unchanged, and the distance between the second boundary and the second opposite side is changed to form the D1.
4. The display panel according to claim 1,
and along the bending direction of the auxiliary display area, the orthographic projection of the grid where the first color sub-pixel is located on the substrate has a second opposite side opposite to the second boundary, the second opposite side is located on one side, close to the planar display area, of the second boundary, the distance between the second opposite side and the second boundary is kept unchanged, and the second opposite side and the second boundary are translated to form the D1.
5. The display panel according to any one of claims 2 to 4,
the pixels comprise red pixels, green pixels and blue pixels, and the first color sub-pixels are green or red.
6. The display panel according to any one of claims 2 to 4,
the pixels comprise red pixels, green pixels and blue pixels, the first color sub-pixels are green, and the second color sub-pixels are blue.
7. The display panel according to any one of claims 1 or 2,
the D1 and the D2 satisfy a one-dimensional quadratic linear relationship with the bending angle thetan, and the D1 and the D2 are both denoted by D, the following relationship with the bending angle thetan can be satisfied:
θn＝a*D^2+b*D+c
a. b and c are constants larger than zero; and thetan is a bending angle.
8. The display panel according to claim 1, further comprising:
along the bending direction of the auxiliary display area, the orthographic projection of the first color sub-pixel on the substrate base plate has a fifth boundary adjacent to the first boundary, the orthographic projection of the grid where the first color sub-pixel is located on the substrate base plate has a sixth boundary adjacent to the fifth boundary and having the shortest distance, and the fifth boundary and the sixth boundary are a fixed distance D3, wherein:
1μm≤D3≤15μm 。
9. the display panel according to claim 1,
the shading element comprises any one or two of a latticed touch electrode and a black matrix.
10. A display device characterized by comprising the display panel according to any one of claims 1 to 9.
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