CN109830183B - Display panel and display device - Google Patents
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- CN109830183B CN109830183B CN201910130086.2A CN201910130086A CN109830183B CN 109830183 B CN109830183 B CN 109830183B CN 201910130086 A CN201910130086 A CN 201910130086A CN 109830183 B CN109830183 B CN 109830183B
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Abstract
The embodiment of the invention discloses a display panel and a display device, wherein the display panel comprises: the display device comprises a display area and a non-display area, wherein the non-display area surrounds the display area, and the display area comprises a bending area and a non-bending area; the display device comprises a first substrate, a plurality of pixel defining structures arranged on the first substrate and a plurality of supporting columns arranged on the pixel defining structures, wherein a first surface of each supporting column in a bending area is located between a first surface of each supporting column in a non-bending area and the pixel defining structure, and the first surface of each supporting column is a side surface of each supporting column far away from the pixel defining structure. In the embodiment of the invention, the first surface of the supporting column in the bending area is positioned between the first surface of the supporting column in the non-bending area and the pixel limiting structure, so that the display panel is convenient to bend in the bending area, the defects of the display panel under pressure are reduced, and the display effect is improved.
Description
Technical Field
The present invention relates to display technologies, and in particular, to a display panel and a display device.
Background
The flexible screen is generally referred to as a flexible organic light emitting display panel, can be folded along a horizontal axis or a vertical axis, has low power consumption and is flexible, and is particularly suitable for wearable devices.
The conventional flexible organic light-emitting display panel is provided with a spacer, and the spacer can be formed on a pixel defining layer of the flexible organic light-emitting display panel through a mask, a photoetching process and other processes. The spacer arranged on the pixel limiting layer has a certain height, and can play a role in supporting and buffering after the flexible organic light-emitting display panel is folded.
The folding effect of the flexible organic light emitting display panel has an important influence on the display quality. At present, the shock insulator arranged in the flexible organic light-emitting display panel easily causes the flexible organic light-emitting display panel to be stressed when being folded, and causes the display panel in a folding area to generate bad results, thereby influencing the display effect.
Disclosure of Invention
The embodiment of the invention provides a display panel and a display device, and aims to solve the problem of poor bending.
An embodiment of the present invention provides a display panel, including:
the display device comprises a display area and a non-display area, wherein the non-display area surrounds the display area and comprises a bending area and a non-bending area;
the display device comprises a first substrate, a plurality of pixel defining structures arranged on the first substrate and a plurality of supporting columns arranged on the pixel defining structures, wherein a first surface of the supporting column in the bending area is positioned between a first surface of the supporting column in the non-bending area and the pixel defining structures, and the first surface of the supporting column is a side surface of the supporting column far away from the pixel defining structures.
Based on the same inventive concept, the embodiment of the invention also provides a display device, which comprises the display panel.
In the embodiment of the invention, the first surface of the supporting column in the bending area is positioned between the first surface of the supporting column in the non-bending area and the pixel limiting structure, so that the height of the supporting column in the bending area is reduced, the compressive stress of the supporting column on the packaging film layer is reduced, the supporting column is prevented from damaging the packaging film layer, the packaging effect and the display effect are improved, the display panel is convenient to bend in the bending area, and the phenomenon of poor bending of the display panel is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, a brief description will be given below of the drawings required for the embodiments or the technical solutions in the prior art, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic diagram of a display panel according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a display panel according to an embodiment of the present invention;
FIG. 3 is a cross-sectional view taken along A-A' of FIG. 2;
FIG. 4 is a schematic diagram of a display panel according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of a display panel according to an embodiment of the present invention;
FIG. 6 is a schematic diagram of a display panel according to an embodiment of the present invention;
FIG. 7 is a schematic diagram of a display panel according to an embodiment of the present invention;
FIG. 8 is a schematic diagram of a display panel provided by an embodiment of the invention;
FIG. 9 is a schematic diagram of a display panel provided by an embodiment of the invention;
FIG. 10 is a schematic diagram of a display panel provided by an embodiment of the invention;
fig. 11 is a partial schematic view of a bending region of a display panel according to an embodiment of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described through embodiments with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. 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.
Referring to fig. 1 to 3, schematic views of a display panel according to an embodiment of the present invention are shown, and fig. 3 is a cross-sectional view taken along a-a' of fig. 2. The display panel provided by the embodiment is suitable for any flexible display panel, such as a flexible organic light emitting display panel.
The display panel provided by the embodiment comprises: the display device comprises a display area 10 and a non-display area 11, wherein the non-display area 11 surrounds the display area 10, and the display area 10 comprises a bending area 12 and a non-bending area 13; the display device includes a first substrate 20, a plurality of pixel defining structures 21 disposed on the first substrate 20, and a plurality of supporting pillars 22 disposed on the plurality of pixel defining structures 21, wherein a first surface of the supporting pillar 22 of the bending region 12 is located between a first surface of the supporting pillar 22 of the non-bending region 13 and the pixel defining structures 21, and the first surface of the supporting pillar 22 is a side surface of the supporting pillar 22 away from the pixel defining structures 21.
In this embodiment, the selectable display panel is any flexible display panel, such as a flexible organic light emitting display panel. The non-display area 11 of the display panel surrounds the display area 10, and in other embodiments, the display panel shown in fig. 4 may be selected to be a circular hole screen (where the circular hole is marked as 1), or the display panel shown in fig. 5 may be selected to be a special-shaped screen, and specifically, the display panel may be selected to be a rectangular special-shaped screen or other. As will be understood by those skilled in the art, the display area shape of the display panel is not particularly limited in the embodiments of the present invention on the basis of satisfying the flexible display panel.
In this embodiment, the display area 10 includes a bending area 12 and a non-bending area 13, the bending area 12 has a bending axis YZ, the bending axis YZ of the selectable display area 10 is parallel to a short side direction of the display area 10, the selectable bending area 12 is located in the middle of the display area 10, the non-bending areas 13 are respectively located on two sides of the bending area 12, and the display panel realizes flexible bending with the bending axis YZ as an axis. An electronic device based on the display panel of the present invention may be configured to bend the bending axis YZ axially inward or outward, where the inner portion is a display surface of the electronic device and the outer portion is a back surface of the electronic device. In other embodiments, the short side of the bending region near the display area may be selected, but the specific position of the bending region is not limited in the present invention.
In this embodiment, the first substrate 20 may be an array substrate of a display panel, a pixel defining layer is disposed on the first substrate 20, the pixel defining layer is a mesh structure having a plurality of openings, light emitting units are disposed in the openings of the pixel defining layer, the pixel defining layer defining one light emitting unit is defined as a pixel defining structure 21, that is, the pixel defining structure 21 defines a pixel region, a supporting pillar 22 is further disposed on the pixel defining structure 21, and a first surface of the supporting pillar 22 of the bending region 12 is located between a first surface of the supporting pillar 22 of the non-bending region 13 and the pixel defining structure 21. A plurality of supporting columns 22 can be arranged on one optional pixel limiting structure 21, and the supporting columns 22 play a supporting role in supporting a mask used in the process of evaporating the organic light-emitting layer in the process, so that the problem that the mask scratches the organic light-emitting layer to influence the display effect is avoided. It can be understood by those skilled in the art that, as shown in fig. 6, the first substrate 20 at least includes a substrate 20a, a driving TFT20b, an anode 20c, a light emitting layer 20d, a cathode 20e, and the like, a pixel defining layer 20f is further disposed on the first substrate 20, and the display panel further includes an encapsulation film layer 20g, and it should be noted that fig. 6 only shows a partial structure of the display panel.
When the display panel is bent, the bending stress is concentrated in the bending area, the inner film layer is extruded and the outer film layer is stretched in the bending area. The display panel at least further includes an encapsulation film layer (as shown in fig. 6) disposed on the support pillars, and the height of the support pillars in different areas in the conventional display panel is the same, and the display panel is designed for high support pillars. To display panel with the axle of buckling as the condition of buckling in the axial, in the region of buckling, inboard rete is the encapsulation rete promptly by the extrusion, high support column still impress the encapsulation rete simultaneously, so make the support column that the region of buckling corresponds too big to the compressive stress of encapsulation rete, and then the support column destroys the encapsulation rete by the extrusion easily, causes encapsulation rete crackle to lead to display panel encapsulation to become invalid, influence display effect. To display panel with the axle of buckling as the condition of the outer bending of axial, in the bending region, outside rete is promptly encapsulated the rete and is stretched, high support column still impression encapsulation rete simultaneously, so make the support column that the bending region corresponds too big to the compressive stress of encapsulation rete, and then the support column destroys the encapsulation rete by tensile easily, cause encapsulation rete crackle to lead to display panel encapsulation inefficacy, influence display effect.
In this embodiment, the first surface of the supporting pillar 22 of the bending region 12 is lower than the first surface of the supporting pillar 22 of the non-bending region 13, so that the display panel is bent in the bending region 12, and the poor bending of the display panel is improved. Specifically, for the display panel with the axle of buckling as the condition of buckling in the axial, at the highly reduced of the support column 22 of the regional 12 of buckling, so can reduce the compressive stress of support column 22 to the encapsulation rete by the extrusion, and then avoid support column 22 to destroy by the extruded encapsulation rete, compare with prior art, improved encapsulation effect and display effect, improved the bad problem of buckling. For the display panel use the axle of buckling as the condition of the outer bending of axial, highly reduce at the support column 22 of bending zone 12, so can reduce support column 22 to the compressive stress of the encapsulation rete by tensile, and then avoid support column 22 to destroy the encapsulation rete by tensile, compare with prior art, improved encapsulation effect and display effect, improved the bad problem of buckling.
In this embodiment, the first surface of the supporting pillar 22 of the non-bending region 13 is higher than the first surface of the supporting pillar 22 of the bending region 12, and the supporting pillar 22 of the non-bending region 13 plays an effective mask supporting role to support a mask used when an organic light emitting layer is evaporated in a process, so as to avoid the problem that the mask scratches the organic light emitting layer to affect a display effect.
In this embodiment, the first surface of the support column in the bending region is located between the first surface of the support column in the non-bending region and the pixel limiting structure, then the height of the support column in the bending region is reduced, the compressive stress of the support column on the packaging film layer is reduced, the support column is prevented from damaging the packaging film layer, the packaging effect and the display effect are improved, the display panel is convenient to bend in the bending region, the bad bending phenomenon of the display panel is improved, the support column in the non-bending region can also be used for achieving the effect of supporting the mask, and the problem that the display effect is affected by the mask scratching of the organic light emitting layer is avoided.
Illustratively, based on the above technical solution, as shown in fig. 2, the selectable bending area 12 includes a bending axis YZ, and a plurality of supporting columns 22 are arranged in a plurality of rows, a row direction of any row of supporting columns 22 is parallel to the bending axis YZ, and first surfaces of a row of supporting columns 22 are flush. In this embodiment, the supporting pillars 22 are arranged in multiple rows, and the row direction is parallel to the bending axis YZ, and the first surfaces of the supporting pillars 22 are flush, so that the heights of the supporting pillars 22 are the same, and the compressive stress of the corresponding bent supporting pillars 22 on the packaging film is uniform. In this embodiment, the height of the supporting column 22 of the bending region 12 is reduced, so that the compressive stress of the supporting column 22 on the packaging film is reduced, the supporting column 22 is prevented from damaging the packaging film, the packaging effect and the display effect are improved, and the poor bending is improved.
As shown in fig. 3, the selectable bending region 12 includes a first supporting column row 121 and a second supporting column row 122, the second supporting column row 122 is disposed adjacent to a bending axis YZ, the first supporting column row 121 is disposed adjacent to a first edge of the bending region 12, the first edge of the bending region 12 is disposed parallel to the bending axis YZ, and Hz1 is ≦ 2Hz2, where Hz1 is a vertical distance from a first surface of the first supporting column row 121 to a first surface of the pixel defining structure 21, Hz2 is a vertical distance from the first surface of the second supporting column row 122 to the first surface of the pixel defining structure 21, and the first surface of the pixel defining structure 21 is a side surface of the pixel defining structure 21 away from the supporting columns 22.
In this embodiment, the perpendicular distance Hz1 from the first surface of the row of support posts (i.e., the first support post row 121) of the bending region 12 adjacent to the first edge to the first surface of the pixel defining structure 21 is the largest, and the perpendicular distance Hz2 from the first surface of the row of support posts (i.e., the second support post row 122) of the bending region 12 adjacent to the bending axis YZ to the first surface of the pixel defining structure 21 is the smallest. If Hz1 is greater than 2Hz2, the supporting pillars in the vicinity of the bending axes YZ after bending may be too high due to the supporting effect of the supporting pillars, and the packaging film layer may be squeezed, which may affect the reliability of the display panel and cause uneven display. Therefore, the Hz1 is set to be less than or equal to 2Hz2, so that the organic light-emitting layer is prevented from being scratched, the phenomenon that the packaging film layer is damaged due to the fact that the supporting columns in the bending area are too high when the display panel is bent can be avoided, the packaging effect and the display effect are improved, and the problem of poor bending is solved.
The alternative bending region 12 as shown in FIGS. 3 and 7 comprises a bending axis YZ, the bending region 12 comprises a first support column 22a and a second support column 22b, the second support column 22b is located between the first support column 22a and the bending axis YZ, H1 ≧ H2, wherein H1 is the perpendicular distance from the first surface of the first support column 22a to the first surface of the pixel defining structure 21, H2 is the perpendicular distance from the first surface of the second support column 22b to the first surface of the pixel defining structure 21, and the first surface of the pixel defining structure 21 is the side surface of the pixel defining structure 21 away from the support columns 22. In the present embodiment, for any two support columns 22 in the bending region 12 that are different in vertical distance from the bending axis YZ, one of the support columns that is far from the bending axis YZ is defined as a first support column 22a, and one of the support columns that is near the bending axis YZ is defined as a second support column 22b, and then the second support column 22b is located between the first support column 22a and the bending axis YZ.
As shown in fig. 3, H1 of the first support column 22a far from the bending axis YZ is greater than H2 of the second support column 22b near the bending axis YZ, or as shown in fig. 7, H1 of the first support column 22a far from the bending axis YZ is equal to H2 of the second support column 22b near the bending axis YZ, and in the direction of the non-bending region 13 toward the bending region 12, the first surfaces of the plurality of support columns 22 at one side of the bending region 12 are not completely flush and are arranged in a trend from high to low, so that the display panel is bent in the bending region 12, the display panel is protected, the compressive stress of the support columns on the packaging film is reduced, the packaging film is prevented from being damaged by the support columns, the packaging effect and the display effect are improved, and the poor bending phenomenon of the display panel is improved.
The rows of the first support columns 22a and the rows of the second support columns 22b may be arranged adjacent to each other as shown in fig. 3 and 7. In the bending region 12, the first surfaces of at least two adjacent rows of the supporting posts on the same side of the bending axis YZ are not flush, i.e., H1 of the first supporting post 22a far away from the bending axis YZ is larger than H2 of the second supporting post 22b near the bending axis YZ, so that the supporting posts are arranged from high to low. In other embodiments, however, there may be instances where the first surfaces of two adjacent rows of support posts located on the same side of the bending axis YZ are flush in the selectable bending region 12. It should be noted that on the basis of ensuring that the support columns in the bending region on the same side of the bending axis YZ are arranged according to the trend from high to low, the height and other parameters of the support columns can be reasonably set according to the product requirements.
The vertical distance between the first surface of the first support column 22a and the first surface of the second support column 22b may be selected to be a first predetermined distance M as shown in fig. 3. Given that the row where the first supporting column 22a is located and the row where the second supporting column 22b is located are arranged in adjacent rows, the distance between the first surfaces of any two adjacent rows of supporting columns in the bending region 12, which are located on the same side of the bending axis YZ, is the same, that is, the equal distance changes from high to low, so that the display panel is convenient to bend in the bending region 12, the display panel is protected, the defects when the display panel is pressed are reduced, the problem that the stress of the bending region caused by the high supporting columns is too large is also solved, the bending effect of the bending region is improved, and the display effect is further improved.
As shown in fig. 3, the thicknesses of the pixel defining structures 21 corresponding to the supporting columns 22 in the alternative display panel are the same, and the thickness of the first supporting column 22a is greater than that of the second supporting column 22 b. In this embodiment, the thicknesses of the pixel defining structures 21 corresponding to the supporting pillars 22 are the same, and the adjustment of the first surfaces of any row of the supporting pillars 22 located on the same side of the bending axis YZ in the bending region 12 is realized by adjusting the thicknesses of the supporting pillars 22, so that H1 is greater than or equal to H2. In an embodiment of the present invention, the thickness of the supporting pillar is specifically a vertical distance from a first surface of the supporting pillar to a side surface of the supporting pillar facing the pixel defining structure, and the thickness of the pixel defining structure is specifically a vertical distance from a side surface of the pixel defining structure facing the supporting pillar to the first surface of the pixel defining structure.
As shown in fig. 8, the support columns 22 in the alternative display panel have the same thickness, and the thickness of the pixel defining structure 21 corresponding to the first support column 22a is greater than the thickness of the pixel defining structure 21 corresponding to the second support column 22 b. In this embodiment, the thicknesses of the supporting pillars 22 are the same, and the adjustment of the first surfaces of any row of supporting pillars 22 located on the same side of the bending axis YZ in the bending region 12 is implemented by adjusting the thicknesses of the pixel defining structures 21 corresponding to the supporting pillars 22, so that H1 is greater than or equal to H2.
Optionally, the thickness of the first supporting column is greater than that of the second supporting column, and the thickness of the pixel defining structure corresponding to the first supporting column is greater than that of the pixel defining structure corresponding to the second supporting column. In this embodiment, the thickness of the supporting columns and the pixel defining structures corresponding to the supporting columns are adjusted to adjust the first surfaces of any row of supporting columns located on the same side of the bending axis in the bending region, so that H1 is greater than or equal to H2.
As shown in fig. 9, at least two rows of support posts 22 located on either side of the bending axis YZ in the selectable bending area 12 have a high arrangement density of the rows of support posts 22 away from the bending axis YZ and a low arrangement density of the rows of support posts 22 near the bending axis YZ. The higher the arrangement density of the support columns is, the better the support effect is, the lower the arrangement density of the support columns is, and the smaller the compressive stress is. In this embodiment, the row of support pillars 22 far away from the bending axis YZ has a high arrangement density, and can play a role of effective mask support to support a mask used in the process of evaporating an organic light emitting layer, thereby avoiding the problem that the mask scratches the organic light emitting layer and affects the display effect. Therefore, the support columns in the bending areas can protect the display panel, reduce the defects of the display panel when the display panel is pressed, improve the bending effect of the bending areas, and improve the supporting effect and the packaging effect of the bending areas through the support columns with different arrangement densities.
As shown in fig. 10, the arrangement density of the support pillars 22 in the optional non-bending region 13 is high, and the arrangement density of the support pillars 22 in the bending region 12 is low. In this embodiment, the higher the arrangement density of the support columns is, the better the support effect is, the support columns 22 of the non-bending regions 13 mainly play a role in supporting masks, so that the support columns 22 of the non-bending regions 13 have high density, and can effectively play a role in supporting masks, thereby preventing the organic light emitting layers of the non-bending regions 13 from being scratched by masks, and improving the display effect.
As shown in fig. 11, the plurality of pixel defining structures 21 may define a plurality of sub-pixels 23, the plurality of sub-pixels 23 include a plurality of red sub-pixels R, a plurality of green sub-pixels G, and a plurality of blue sub-pixels B, and in the bending region 12, a minimum distance between a supporting pillar 22 and an adjacent red sub-pixel R is smaller than a minimum distance between the supporting pillar 22 and an adjacent green sub-pixel G. Those skilled in the art will appreciate that the color of the sub-pixel includes, but is not limited to R, G, B, and in other embodiments the color of the sub-pixel may alternatively include RGBW or RGBY. And (4) selecting.
Fig. 11 is a schematic diagram of a local bending region 12, where a supporting pillar 22 is adjacent to at least one sub-pixel 23, a vertical distance between the supporting pillar 22 and each adjacent sub-pixel 23 is calculated, and a minimum vertical distance of the at least one vertical distance is defined as a minimum distance between the supporting pillar 22 and the adjacent sub-pixel 23. Specifically, taking a supporting pillar 22 as an example, it is calculated that the vertical distance between the supporting pillar 22 and the adjacent red sub-pixel R is K1, the vertical distance between the supporting pillar 22 and the adjacent green sub-pixel G is K2, the vertical distance between the supporting pillar 22 and the adjacent blue sub-pixel B is K3, K1 < K2 < K3, and then the minimum distance between the supporting pillar 22 and the adjacent sub-pixel 23 is K1.
In this embodiment, the minimum distance between the supporting pillar 22 and the adjacent red sub-pixel R in the bending region 12 is smaller than the minimum distance between the supporting pillar 22 and the adjacent green sub-pixel G, and the light emitting effect of the sub-pixels is not affected. When the display panel is bent, the inner film layer of the bending area is extruded and the outer film layer is stretched. Specifically, when the display panel is bent inward, the support pillars of the bending region are located at the inner side and may displace under extrusion, which may affect the luminance of the adjacent sub-pixels; or, when the display panel is bent outward, the support posts of the bending region are located at the outer side and may be displaced under stretching, which may affect the light emitting brightness of the adjacent sub-pixels. The luminance of the red sub-pixel R is usually lower than the luminance of the green sub-pixel G, so the influence of the displacement of the supporting column 22 on the luminance of the red sub-pixel R is smaller than the influence on the luminance of the green sub-pixel G, and in this embodiment, the minimum distance between the supporting column 22 and the adjacent red sub-pixel R in the bending region 12 is set to be smaller than the minimum distance between the supporting column 22 and the adjacent green sub-pixel G, so that the influence of the displacement of the supporting column on the luminance of the sub-pixel can be reduced, and further, the influence of the displacement of the supporting column on the display can be reduced.
The film layer in the non-bending area is not extruded or stretched, so that the support columns in the non-bending area cannot generate displacement to influence the light emitting brightness of adjacent sub-pixels. As can be understood by those skilled in the art, the minimum distance between the supporting column and the adjacent sub-pixel can be reasonably set on the basis of ensuring the mask supporting effect of the supporting column in the non-bending area.
In other embodiments, the minimum distance between the support pillar and the adjacent blue sub-pixel in the bending region is smaller than the minimum distance between the support pillar and the adjacent red sub-pixel, and/or the minimum distance between the support pillar and the adjacent blue sub-pixel in the bending region is smaller than the minimum distance between the support pillar and the adjacent green sub-pixel.
Based on the same inventive concept, embodiments of the present invention further provide a display device, which includes the display panel according to any of the above embodiments. The display device can be selected to be a flexible display device, the flexible display device is made of a flexible substrate and a flexible material, the flexible display device is any flexible display device, such as a flexible organic light emitting display device, and the type of the flexible display device is not specifically limited in the invention. The optional display device in the embodiment can be applied to electronic equipment such as a smart phone and a tablet computer.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious modifications, rearrangements, combinations and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (13)
1. A display panel, comprising:
the display device comprises a display area and a non-display area, wherein the non-display area surrounds the display area and comprises a bending area and a non-bending area;
the display device comprises a first substrate, a plurality of pixel defining structures arranged on the first substrate and a plurality of supporting columns arranged on the pixel defining structures, wherein a first surface of the supporting column in the bending area is positioned between a first surface of the supporting column in the non-bending area and the pixel defining structures, and the first surface of the supporting column is a side surface of the supporting column far away from the pixel defining structures.
2. The display panel according to claim 1, wherein the bending region comprises a bending axis, the plurality of supporting pillars are arranged in a plurality of rows, a row direction of any row of the supporting pillars is parallel to the bending axis, and first surfaces of one row of the supporting pillars are flush.
3. The display panel of claim 2, wherein the bending region comprises a first support column row and a second support column row, the second support column row is disposed adjacent to the bending axis, the first support column row is disposed adjacent to a first edge of the bending region, the first edge of the bending region is disposed parallel to the bending axis,
Hz1≤2Hz2，
wherein Hz1 is the perpendicular distance from the first surface of the first support column row to the first surface of the pixel defining structure, Hz2 is the perpendicular distance from the first surface of the second support column row to the first surface of the pixel defining structure, and the first surface of the pixel defining structure is the surface of the side of the pixel defining structure away from the support columns.
4. The display panel according to claim 2, wherein at least two rows of the support columns in the bending region are located on either side of the bending axis, a row of the support columns far away from the bending axis has a high arrangement density, and a row of the support columns near the bending axis has a low arrangement density.
5. The display panel of claim 1, wherein the bending region comprises a bending axis, wherein the bending region comprises a first support column and a second support column, and wherein the second support column is located between the first support column and the bending axis,
H1≥H2，
wherein H1 is a vertical distance from the first surface of the first support column to the first surface of the pixel defining structure, H2 is a vertical distance from the first surface of the second support column to the first surface of the pixel defining structure, and the first surface of the pixel defining structure is a side surface of the pixel defining structure away from the support columns.
6. The display panel according to claim 5, wherein the first support column is disposed in a row adjacent to the second support column.
7. The display panel of claim 6, wherein the first surface of the first support column and the first surface of the second support column are vertically separated by a first predetermined distance.
8. The display panel according to claim 5, wherein the pixel defining structures corresponding to the support columns in the display panel have the same thickness, and the thickness of the first support column is greater than that of the second support column.
9. The display panel according to claim 5, wherein the support columns in the display panel have the same thickness, and the pixel defining structure corresponding to the first support column has a thickness greater than that of the pixel defining structure corresponding to the second support column.
10. The display panel according to claim 5, wherein the thickness of the first support column is greater than the thickness of the second support column, and the thickness of the pixel defining structure corresponding to the first support column is greater than the thickness of the pixel defining structure corresponding to the second support column.
11. The display panel according to claim 1, wherein the support columns in the non-bending region are arranged at a high density, and the support columns in the bending region are arranged at a low density.
12. The display panel of claim 1, wherein the plurality of pixel defining structures define a plurality of sub-pixels, the plurality of sub-pixels including a plurality of red sub-pixels, a plurality of green sub-pixels, and a plurality of blue sub-pixels, and wherein in the bending region, a minimum distance between the support pillar and an adjacent red sub-pixel is less than a minimum distance between the support pillar and an adjacent green sub-pixel.
13. A display device characterized by comprising the display panel according to any one of claims 1 to 12.
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| CN109950285B (en) * | 2019-03-28 | 2021-05-25 | 京东方科技集团股份有限公司 | Array substrate, manufacturing method thereof and display device |
| CN110931527A (en) * | 2019-11-25 | 2020-03-27 | 昆山工研院新型平板显示技术中心有限公司 | Flexible display panel, manufacturing method thereof and flexible display terminal |
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Effective date of registration: 20211101 Address after: No.8, liufangyuan Henglu, Donghu New Technology Development Zone, Wuhan City, Hubei Province Patentee after: WUHAN TIANMA MICRO-ELECTRONICS Co.,Ltd. Patentee after: Wuhan Tianma Microelectronics Co.,Ltd. Shanghai Branch Address before: Room 509, building 1, No. 6111, Longdong Avenue, Pudong New Area, Shanghai, 200120 Patentee before: SHANGHAI TIANMA AM-OLED Co.,Ltd. |