Display panel and manufacturing method thereof, and display device

Abstract

The present invention relates to the field of display technology, and proposes a display panel and a method for preparing the same, and a display device. The display panel has a first area and a second area, and includes a substrate, a light-emitting layer, a first electrode, and a plurality of transparent suppression patterns; the light-emitting layer is arranged on one side of the substrate, and the light-emitting layer includes a plurality of light-emitting patterns, and the plurality of light-emitting patterns do not overlap each other; a plurality of transparent suppression patterns are arranged on one side of the substrate, and are located between at least part of adjacent light-emitting patterns, and are located in the first area, and the plurality of transparent suppression patterns are arranged at intervals; the first electrode is arranged on the side of the light-emitting layer away from the substrate, and a plurality of through holes are arranged on the first electrode, and the orthographic projection of the through holes on the substrate coincides with the orthographic projection of the transparent suppression pattern on the substrate. The display panel does not have a first electrode arranged on the transparent suppression pattern to avoid the first electrode from blocking light, thereby improving the light transmittance of the first area.

Description

Technical Field

[0001] The present invention relates to the field of display technology, and in particular to a display panel, a method for preparing the display panel, and a display device including the display panel. Background Art

[0002] With the development of full-screen technology, the screen-to-body ratio of mobile phones is moving towards the extreme direction. The higher the screen-to-body ratio, the more shocking the visual experience. After the bangs screen and water drop screen, the "hole screen" appeared, but these are not true full screens. For full-screen technology, it is necessary to achieve the effect of full display screen. The first problem to be solved is the "hiding" of the front camera, so the camera under the display is the ultimate solution, that is, to truly "hide" the front camera like the screen fingerprint technology. The under-screen camera solution has certain requirements on the transmittance of the display screen in the under-screen camera display area. The truly translucent part of the OLED (Organic Light-Emitting Diode) display panel is the gap between the light-emitting diodes (sub-pixels).

[0003] At present, the mainstream approach is the "low pixel density solution", which is to reduce the pixel density of the camera display area under the screen, so as to increase the gap between the sub-pixels in the camera display area under the screen, thereby improving the light transmittance. However, the sparse pixel density in this area will cause a difference in display with the surrounding normal display area, reducing the viewing experience. Therefore, how to improve the light transmittance of the display panel in the camera display area under the screen while ensuring no difference in display is a difficult problem.

[0004] The above information disclosed in the Background section is only for enhancement of understanding of the background of the present disclosure and therefore it may include information that does not constitute the prior art that is already known to one of ordinary skill in the art. Summary of the invention

[0005] The object of the present invention is to overcome the shortcoming of the above-mentioned prior art that the transmittance of the under-screen camera display area is low, and to provide a display panel with high transmittance in the under-screen camera display area, a method for preparing the display panel, and a display device including the display panel.

[0006] Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

[0007] According to one aspect of the present disclosure, a display panel is provided, having a first area and a second area, the display panel comprising:

[0008] substrate substrate;

[0009] A light-emitting layer is disposed on one side of the base substrate, the light-emitting layer includes a plurality of light-emitting patterns, and the orthographic projections of the plurality of light-emitting patterns on the base substrate do not overlap with each other;

[0010] A plurality of transparent inhibition patterns are provided on one side of the base substrate and are located between at least part of the adjacent light-emitting patterns, and the transparent inhibition patterns are located in the first area, and the plurality of transparent inhibition patterns are arranged at intervals;

[0011] The first electrode is arranged on a side of the light-emitting layer away from the base substrate. A plurality of through holes are arranged on the first electrode. The orthographic projection of the through holes on the base substrate coincides with the orthographic projection of the transparent inhibition pattern on the base substrate.

[0012] In an exemplary embodiment of the present disclosure, the pixel density of the first area is the same as the pixel density of the second area.

[0013] In an exemplary embodiment of the present disclosure, the display panel further includes:

[0014] A planarization layer, disposed on one side of the base substrate, wherein the planarization layer is provided with a first via hole;

[0015] A pixel definition layer, disposed on a side of the planarization layer away from the base substrate, wherein a third via hole and a fourth via hole are disposed on the pixel definition layer, and the third via hole is connected to the first via hole;

[0016] The transparent suppression pattern is disposed in the first and third via holes that are connected, and the light emitting pattern is disposed in the fourth via hole.

[0017] In an exemplary embodiment of the present disclosure, the material of the transparency inhibition pattern is a strong polar inorganic material or a strong polar organic material, and the material of the first electrode is a conductive metal.

[0018] In an exemplary embodiment of the present disclosure, the display panel further comprises pixel units arranged in an array, the pixel units comprising a first light emitting pattern, a second light emitting pattern and two third light emitting patterns, and peripheral tangent lines of the pixel units form a rectangle;

[0019] In the first direction, corners of two adjacent rectangles are arranged opposite to each other, and a plurality of rectangles are arranged to form a plurality of rows, and two adjacent rows are staggered; and a transparent suppression pattern is arranged between at least two adjacent pixel units.

[0020] In an exemplary embodiment of the present disclosure, the transparent inhibition pattern includes a middle area and four edge areas connected to the middle area, the middle area is circular, and the edge areas are long strips.

[0021] In an exemplary embodiment of the present disclosure,

[0022] In a first direction, the first light-emitting patterns and the second light-emitting patterns are alternately arranged to form a first row, and the third light-emitting patterns are arranged to form a second row;

[0023] In a second direction, the first rows and the second rows are arranged alternately, and the first direction and the second direction are substantially perpendicular;

[0024] The two first light-emitting patterns and the two second light-emitting patterns distributed in two adjacent rows and two columns form a virtual quadrilateral, and the third light-emitting pattern is located in the virtual quadrilateral;

[0025] The transparent suppression pattern is disposed between two adjacent third light-emitting patterns, and the transparent suppression pattern is disposed between adjacent first light-emitting pattern and second light-emitting pattern.

[0026] In an exemplary embodiment of the present disclosure, the display panel further includes pixel units arranged in an array, the pixel units include a first light-emitting pattern, a second light-emitting pattern and two third light-emitting patterns, the two third light-emitting patterns are arranged in the second direction, one first light-emitting pattern and one second light-emitting pattern are arranged in the first direction, and the first light-emitting pattern and the second light-emitting pattern are located on a center line of a line connecting center points of the two third light-emitting patterns;

[0027] In the first direction, a plurality of the pixel units are arranged to form a row, the pixel units in two adjacent rows are staggered, and the first direction is substantially perpendicular to the second direction;

[0028] The transparency suppression pattern is disposed between two adjacent rows of adjacent first light emitting patterns, second light emitting patterns, and two third light emitting patterns.

[0029] In an exemplary embodiment of the present disclosure, the transparent inhibition pattern is set to be an ellipse.

[0030] In an exemplary embodiment of the present disclosure, the first light emitting pattern is a red light emitting pattern, the second light emitting pattern is a blue light emitting pattern, and the third light emitting pattern is a green light emitting pattern.

[0031] According to one aspect of the present disclosure, a display device is provided, comprising any one of the display panels described above.

[0032] According to one aspect of the present disclosure, there is provided a method for preparing a display panel, comprising:

[0033] Providing a substrate, the substrate having a first area and a second area;

[0034] forming a light-emitting layer on one side of the base substrate, wherein the light-emitting layer includes a plurality of light-emitting patterns, and the orthographic projections of the plurality of light-emitting patterns on the base substrate do not overlap with each other;

[0035] In the first area, a plurality of transparent inhibition patterns are formed on one side of the base substrate, wherein the transparent inhibition patterns are located between at least part of the adjacent light emitting patterns, and the plurality of transparent inhibition patterns are arranged at intervals;

[0036] A first electrode is formed on a side of the light emitting layer away from the base substrate, and a plurality of through holes are formed on the first electrode, wherein the orthographic projection of the through holes on the base substrate coincides with the orthographic projection of the transparent suppression pattern on the base substrate.

[0037] In an exemplary embodiment of the present disclosure, the preparation method further comprises:

[0038] Forming a planarization layer on one side of the base substrate, and forming a first via hole on the planarization layer;

[0039] forming a pixel definition layer on a side of the planarization layer away from the base substrate, and forming a third via hole and a fourth via hole on the pixel definition layer, wherein the third via hole is connected to the first via hole;

[0040] The light emitting pattern is formed in the third via hole, and the transparency suppressing pattern is formed in the communicating first via hole and the third via hole.

[0041] It can be seen from the above technical solution that the present invention has at least one of the following advantages and positive effects:

[0042] The display panel and preparation method thereof of the present invention are as follows: a light-emitting layer is arranged on one side of a substrate, the light-emitting layer includes a plurality of light-emitting patterns, and the orthographic projections of the plurality of light-emitting patterns on the substrate do not overlap with each other; in a first zone, a plurality of transparent inhibition patterns are also arranged on one side of the substrate, the transparent inhibition patterns are located between at least part of adjacent light-emitting patterns, and the plurality of transparent inhibition patterns are arranged at intervals; a first electrode is arranged on a side of the light-emitting layer away from the substrate, a plurality of through holes are arranged on the first electrode, and the orthographic projections of the through holes on the substrate coincide with the orthographic projections of the transparent inhibition patterns on the substrate, that is, the first electrode is not arranged on the transparent inhibition pattern, thereby avoiding the first electrode from blocking light and improving the transmittance of the first zone, thereby improving the pixel density of the first zone while ensuring the transmittance, making the pixel density of the first zone the same as the pixel density of the normal display zone, without causing display differences, and meeting the display requirements of higher resolution; and the plurality of transparent inhibition patterns are arranged at intervals, so that the first electrode is still connected as a whole and will not affect the normal display of the first zone. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] The above and other features and advantages of the present invention will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings.

[0044] Figure 1 is a schematic structural diagram of an exemplary embodiment of a display panel of the present invention;

[0045] Figure 2 yes Figure 1 A structural schematic diagram of an exemplary embodiment of a pixel arrangement of a display panel;

[0046] Figure 3 is Figure 2 A schematic diagram of the structure after a transparent inhibition pattern is formed;

[0047] Figure 4 yes Figure 1 A schematic structural diagram of another exemplary embodiment of a pixel arrangement of a display panel;

[0048] Figure 5 is Figure 4 A schematic diagram of the structure after a transparent inhibition pattern is formed;

[0049] Figure 6 yes Figure 1 A structural diagram of another exemplary embodiment of a pixel arrangement of a display panel;

[0050] Figure 7 is Figure 6 A schematic diagram of the structure after a transparent inhibition pattern is formed;

[0051] Figure 8 is a schematic flow chart of an exemplary embodiment of a method for manufacturing a display panel of the present invention;

[0052] Fig. 9 It is a schematic diagram of the structure after forming a pixel dielectric layer in the method for preparing a display panel of the present invention;

[0053] Fig.10 is a schematic structural diagram of a fine metal mask having an opening;

[0054] Fig.11 This is a schematic diagram of the effect of evaporating the cathode in the camera display area under the screen;

[0055] Fig.12 FIG. 4 is a schematic structural diagram of another exemplary embodiment of a display panel of the present invention.

[0056] The main components in the figure are described as follows:

[0057] 1. Base substrate; 2. Organic film layer; 3. Barrier layer;

[0058] 4. Array substrate; 41. Insulation layer; 42. Metal wiring; 43. Interlayer dielectric layer; 44. Source and drain;

[0059] 5. planarization layer; 51. first via hole; 52. second via hole;

[0060] 6. pixel interposing layer; 61. third via hole; 62. fourth via hole;

[0061] 7. Anode (second electrode);

[0062] 8. Luminous pattern; 81. Red luminous pattern; 82. Blue luminous pattern; 83. Green luminous pattern; 84. Coverage area of ​​luminescent material; 85. Actual luminous area;

[0063] 9. cathode (first electrode); 901. through hole;

[0064] 10. Transparent suppression pattern; 11. Encapsulation layer; 12. Fine metal mask; 13. Opening;

[0065] 141. Under-screen camera display area; 142. Normal display area. DETAILED DESCRIPTION

[0066] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that the present invention will be comprehensive and complete and fully convey the concepts of the example embodiments to those skilled in the art. The same reference numerals in the figures represent the same or similar structures, and thus their detailed description will be omitted.

[0067] This exemplary embodiment first provides a display panel, referring to Figure 1 , Fig. 9 and Fig.12 The structure schematic diagram of an exemplary embodiment of a display panel of the present invention is shown, the display panel has a first area and a second area, the display panel may include a base substrate 1, a light-emitting layer, a transparent suppression pattern 10 and a first electrode 9; the light-emitting layer is arranged on one side of the base substrate 1, the light-emitting layer includes a plurality of light-emitting patterns, and the orthographic projections of the plurality of light-emitting patterns on the base substrate 1 do not overlap with each other; a plurality of transparent suppression patterns 10 are arranged on one side of the base substrate 1 and are located between at least part of adjacent light-emitting patterns, and the transparent suppression patterns 10 are located in the first area, and the plurality of transparent suppression patterns 10 are arranged at intervals; the first electrode 9 is arranged on a side of the light-emitting layer away from the base substrate 1, a plurality of through holes 901 are arranged on the first electrode 9, and the orthographic projections of the through holes 901 on the base substrate 1 coincide with the orthographic projections of the transparent suppression patterns 10 on the base substrate 1.

[0068] The first area can be used for under-screen camera display, and can also be used for fingerprint recognition, infrared camera and other functions. The following takes the first area as the under-screen camera display area 141 used for under-screen camera display, and the second area as the normal display area 142 as an example for explanation.

[0069] The display panel and the manufacturing method thereof of the present invention are characterized in that, in the under-screen camera display area 141, a plurality of transparent suppression patterns 10 are further arranged on one side of the base substrate 1, the transparent suppression patterns 10 are located between at least part of the adjacent light-emitting patterns, and the plurality of transparent suppression patterns 10 are arranged at intervals; a first electrode 9 is arranged on the side of the light-emitting layer away from the base substrate 1, and a plurality of through holes 901 are arranged on the first electrode 9, and the orthographic projection of the through holes 901 on the base substrate 1 coincides with the orthographic projection of the transparent suppression pattern 10 on the base substrate 1, that is, there is no transparent suppression pattern 10 on the transparent suppression pattern 10. A first electrode 9 is provided to avoid blocking of light by the first electrode 9, thereby improving the light transmittance of the camera display area 141 under the screen. Therefore, the pixel density of the camera display area 141 under the screen can be improved while ensuring the light transmittance, so that the pixel density of the camera display area 141 under the screen is less than or equal to the pixel density of the normal display area 142, which will not cause display differences and can meet the display requirements of higher resolution. Moreover, a plurality of transparent suppression patterns 10 are arranged at intervals, so that the first electrode 9 is still connected as a whole, which will not affect the normal display of the camera display area 141 under the screen.

[0070] In this exemplary embodiment, the substrate 1 may be a glass substrate, or a flexible substrate. The substrate 1 has an under-screen camera display area 141 and a normal display area 142 surrounding the under-screen camera display area 141. In the under-screen camera display area 141, a camera may be provided on one side of the substrate 1.

[0071] An organic film layer 2 is arranged on the other side of the base substrate 1, that is, an organic film layer 2 is arranged on the other side of the base substrate 1 where the camera is arranged. The material of the organic film layer 2 may be polyimide resin. A barrier layer 3 is arranged on the side of the organic film layer 2 away from the base substrate 1. An array substrate 4 is arranged on the side of the barrier layer 3 away from the base substrate 1. The array substrate 4 may include a plurality of thin film transistors arranged in an array. The thin film transistor is used as a switch component to control the switch of each sub-pixel, that is, to control whether each sub-pixel is displayed. The thin film transistor may include an insulating layer 41, a metal wiring 42, a gate, a gate insulating layer (not shown in the figure due to the sectioning position), an interlayer dielectric layer 43 and a source and drain 44. The thin film transistor may be a top gate type, a bottom gate type or a double gate type. The specific structure of the thin film transistor is a mature technology, so it will not be repeated here.

[0072] Reference Fig. 9As shown, in this example embodiment, in the under-screen camera display area 141, a planarization layer 5 is provided on the side of the array substrate 4 away from the base substrate 1, and a first via hole 51 and a second via hole 52 are provided on the planarization layer 5; a second electrode 7 is provided on the side of the planarization layer 5 away from the base substrate 1, and the area of ​​the second electrode 7 is relatively small and is only provided in the pixel area. The second electrode 7 can be an anode 7, and the second electrode 7 is connected to the thin film transistor through the second via hole 52.

[0073] In the normal display area 142, a planarization layer 5 is arranged on the side of the array substrate 4 away from the base substrate 1, and a second via hole 52 is arranged on the planarization layer 5; a second electrode 7 is arranged on the side of the planarization layer 5 away from the base substrate 1, and the second electrode 7 can be an anode 7, and the second electrode 7 is connected to the thin film transistor through the second via hole 52.

[0074] Reference Fig. 9 As shown, in the under-screen camera display area 141, a pixel definition layer 6 is provided on the side of the planarization layer 5 and the second electrode 7 away from the substrate 1, and a third via 61 and a fourth via 62 are provided on the pixel definition layer 6. The third via 61 is connected to the first via 51, that is, the orthographic projection of the third via 61 on the substrate 1 coincides with the orthographic projection of the first via 51 on the substrate 1; no thin film transistors and various wirings are provided at the positions of the third via 61 and the first via 51, that is, the orthographic projection of the third via 61 on the substrate 1 does not overlap with the orthographic projection of the thin film transistors and various wirings on the substrate 1, so as to avoid the thin film transistors and various wirings affecting the transmittance. The fourth via 62 is connected to the second electrode 7, so that the second electrode 7 is exposed.

[0075] In the normal display area 142, a pixel definition layer 6 is provided on the side of the planarization layer 5 and the second electrode 7 away from the base substrate 1, and a fourth via hole 62 is provided on the pixel definition layer 6. The fourth via hole 62 is connected to the second electrode 7, so that the second electrode 7 is exposed. In the normal display area 142, the layout of the thin film transistor and various wirings does not need to be considered, because the transmittance of the entire display panel does not need to be considered in the normal display area 142.

[0076] Reference Figure 1 As shown, in the under-screen camera display area 141, a light-emitting pattern 8 is arranged on the side of the second electrode 7 away from the base substrate 1, and the light-emitting pattern 8 is formed in the fourth via hole 62. The orthographic projections of each light-emitting pattern 8 on the base substrate 1 do not overlap each other, that is, multiple light-emitting patterns 8 are arranged at intervals, or two adjacent light-emitting patterns 8 are arranged on the same edge or tangent to each other. A light-emitting pattern 8 and a switch component controlling the light-emitting pattern 8 form a sub-pixel. Multiple light-emitting patterns 8 form a light-emitting layer.

[0077] Please continue to refer to Figure 1As shown, in the under-screen camera display area 141, transparent suppression patterns 10 are provided in the third via hole 61 and the first via hole 51, and multiple transparent suppression patterns 10 are provided at intervals; the material of the transparent suppression pattern 10 is a strong polar inorganic material or a strong polar organic material, for example, Liq (8-hydroxyquinoline-lithium), Alq3 (8-hydroxyquinoline aluminum), LiF (lithium fluoride), which has a strong repulsive effect on metal magnesium. Therefore, the first electrode 9 will not be generated on the transparent suppression pattern 10 later.

[0078] In the normal display area 142 , no transparent suppression pattern 10 is provided.

[0079] The arrangement of sub-pixels is described in detail below.

[0080] In the following example implementation, the first light-emitting pattern is a red light-emitting pattern 81, the second light-emitting pattern is a blue light-emitting pattern 82, and the third light-emitting pattern is a green light-emitting pattern 83. The light-emitting pattern is the coverage area 84 of the light-emitting material, and the area of ​​the actual light-emitting area 85 is smaller than the area of ​​the coverage area 84 of the light-emitting material. In the following example implementation, the light-emitting pattern is set to be circular. The blue light-emitting pattern 82 that emits blue light has the shortest life among the red light-emitting pattern 81, the blue light-emitting pattern 82 and the green light-emitting pattern 83. Therefore, the blue light-emitting pattern 82 has a larger light-emitting area than the red light-emitting pattern 81 and the green light-emitting pattern 83, thereby avoiding the reduction of the life of the OLED display, that is, the optimized pixel arrangement structure of the OLED display can provide a longer life. The light-emitting pattern can also be set to a variety of shapes such as ellipse, rectangle, polygon, etc.

[0081] Reference Figure 2 and Figure 3As shown, in this exemplary embodiment, the display panel includes pixel units arranged in an array, and the pixel units include a red light-emitting pattern 81, a blue light-emitting pattern 82, and two green light-emitting patterns 83, a total of four light-emitting patterns, and the four light-emitting patterns can be set to be circular, and two adjacent ones of the four light-emitting patterns are set to be circumscribed to each other. The peripheral tangents of the pixel unit form a rectangle, so that the four light-emitting patterns are respectively located at the four corners of the rectangle, wherein the two green light-emitting patterns 83 are arranged oppositely, that is, the two green light-emitting patterns 83 are arranged at two opposite corners of the rectangle; a red light-emitting pattern 81 and a blue light-emitting pattern 82 are arranged oppositely. Since the area of ​​the blue light-emitting pattern 82 is the largest, the area of ​​the red light-emitting pattern 81 is the second largest, and the red light-emitting pattern 81 and the blue light-emitting pattern 82 are arranged oppositely, therefore, the peripheral tangents of the pixel unit are the two tangents of the red light-emitting pattern 81 and the two tangents of the blue light-emitting pattern 82, and the four tangents intersect to form a rectangle. In the first direction, the corners of two adjacent rectangles are arranged opposite to each other, that is, the diagonals of the two adjacent rectangles are on a straight line, and multiple rectangles are arrayed according to the above rule to form multiple rows, and the two adjacent rows are staggered, that is, the rectangles in one of the two adjacent rows are located within the angle between the side lines of the two adjacent rectangles in the other row.

[0082] The virtual centers of the rectangles of the five pixel units are arranged at the four corners and the center of the virtual large rectangle, respectively. The virtual large rectangle is a square, and the side length of the virtual large rectangle is the size of two pixel pitches.

[0083] In this example implementation, in order to avoid inconsistency in design and inconsistency in various auxiliary jigs and process flows in the preparation process, the pixel arrangement rule of the under-screen camera display area 141 is the same as the pixel arrangement rule of the normal display area 142. Therefore, the pixel arrangement rule of the normal display area 142 is not described in detail here. Of course, in other example implementations of the present invention, the pixel arrangement rule of the under-screen camera display area 141 and the pixel arrangement rule of the normal display area 142 may also be different, as long as the pixel density remains the same.

[0084] Please continue to refer to Figure 2 and Figure 3 As shown, a transparent suppression pattern 10 is disposed between at least two adjacent pixel units in the under-screen camera display area 141. Since the space inside the pixel unit is too small to accommodate the transparent suppression pattern 10, the transparent suppression pattern 10 is disposed between at least two adjacent pixel units.

[0085] Specifically, the transparent suppression pattern 10 may include a middle area and four edge areas connected to the middle area. The middle area may be circular, and the edge area may be a long strip. A rounded chamfer is provided at the connection between the middle area and the edge area to make a smooth transition between the middle area and the edge area. A rounded chamfer is also provided at one end of the long strip away from the middle area. The middle area is located between four adjacent pixel units, and one edge area is located between two adjacent pixel units. Of course, at the edge, the transparent suppression pattern 10 may be provided between two or three adjacent pixel units. The middle area may also be a square, a polygon, etc., and the edge area may be an ellipse, a rectangle, etc.

[0086] exist Figure 2 and Figure 3 In the example implementation shown, the light transmittance of the under-screen camera display area 141 can reach 38%.

[0087] Reference Figure 4 and Figure 5 As shown, in this example embodiment, in the first direction, the first light-emitting pattern and the second light-emitting pattern are alternately arranged to form a first row, and the third light-emitting pattern is arranged to form a second row; in the second direction, the first row and the second row are alternately arranged; that is, a plurality of red light-emitting patterns 81 and a plurality of blue light-emitting patterns 82 are alternately arranged in the first direction to form a plurality of first rows, that is, a blue light-emitting pattern 82 is arranged between two adjacent red light-emitting patterns 81, a red light-emitting pattern 81 is arranged between two adjacent blue light-emitting patterns 82, and a first gap is arranged between adjacent red light-emitting patterns 81 and blue light-emitting patterns 82; a plurality of green light-emitting patterns 83 are alternately arranged in the first direction to form a plurality of second rows, that is, a second gap is arranged between two adjacent green light-emitting patterns 83; the second row is located between two adjacent first rows.

[0088] The two first luminous patterns and the two second luminous patterns distributed in two adjacent rows and two columns form a virtual quadrilateral, and the third luminous pattern is located in the virtual quadrilateral. Specifically, the adjacent red luminous patterns 81 and the blue luminous patterns 82 of two adjacent first rows form a virtual quadrilateral, and the green luminous pattern 83 is set at the center of the virtual quadrilateral. The center line of the green luminous pattern 83 is colinear with the center line of the line connecting the blue luminous pattern 82 and the green luminous pattern 83, so that the multiple red luminous patterns 81 and the multiple blue luminous patterns 82 are still alternately arranged in the second direction to form multiple first columns, and the multiple green luminous patterns 83 are still alternately arranged in the second direction to form multiple second columns, and the second columns are located between two adjacent first columns. The second direction is substantially perpendicular to the first direction.

[0089] The five luminous patterns are located at the four corners and the center of the virtual small square, and the four virtual small squares form a virtual large square, the side length of the virtual large square is the size of two pixel pitches. Each virtual large square contains eight complete luminous patterns.

[0090] In this example implementation, in order to avoid inconsistency in design and inconsistency in various auxiliary jigs and process flows in the preparation process, the pixel arrangement rule of the under-screen camera display area 141 is the same as the pixel arrangement rule of the normal display area 142. Therefore, the pixel arrangement rule of the normal display area 142 is not described in detail here. Of course, in other example implementations of the present invention, the pixel arrangement rule of the under-screen camera display area 141 and the pixel arrangement rule of the normal display area 142 may also be different, as long as the pixel density remains the same.

[0091] Please continue to refer to Figure 4 and Figure 5 As shown, in the under-screen camera display area 141, a transparent suppression pattern 10 is arranged between the adjacent red light-emitting pattern 81 and the blue light-emitting pattern 82, that is, a transparent suppression pattern 10 is arranged in the first gap, and the transparent suppression pattern 10 is the first transparent suppression pattern; a transparent suppression pattern 10 is arranged between two adjacent green light-emitting patterns 83, that is, a transparent suppression pattern 10 is arranged in the second gap, and the transparent suppression pattern 10 is the second transparent suppression pattern. The transparent suppression patterns 10 arranged at the two positions can both be elliptical. It is just that the long axis of the first transparent suppression pattern is arranged along the second direction, and the long axis of the second transparent suppression pattern is arranged along the first direction. In addition, the structure of the transparent suppression pattern 10 is not limited to the above description. For example, the transparent suppression pattern 10 can also be set to a variety of shapes such as polygonal, circular, rectangular, and oval.

[0092] exist Figure 4 and Figure 5 In the example implementation shown, the light transmittance of the under-screen camera display area 141 can reach 38.9%.

[0093] Reference Figure 6 and Figure 7As shown, in this example embodiment, the display panel includes pixel units arranged in an array, and the pixel units include a red light-emitting pattern 81, a blue light-emitting pattern 82, and two green light-emitting patterns 83. Among them, the two green light-emitting patterns 83 are arranged in the second direction, and the two green light-emitting patterns 83 are arranged tangentially; a red light-emitting pattern 81 and a blue light-emitting pattern 82 are arranged in the first direction, and the red light-emitting pattern 81 and the blue light-emitting pattern 82 are arranged tangentially. The red light-emitting pattern 81 and the blue light-emitting pattern 82 are located on the center line of the line connecting the center points of the two green light-emitting patterns 83, that is, the center line of the red light-emitting pattern 81 and the blue light-emitting pattern 82 is colinear with the center line of the line connecting the center points of the two green light-emitting patterns 83, so that the red light-emitting pattern 81, the blue light-emitting pattern 82, and the two green light-emitting patterns 83 form a "T" shape. The red light-emitting pattern 81 is closer to the green light-emitting pattern 83 than the blue light-emitting pattern 82, and a gap may be provided between the red light-emitting pattern 81 and the green light-emitting pattern 83. The second direction is substantially perpendicular to the first direction.

[0094] Multiple pixel units are arranged in a first direction to form a row, multiple rows are arranged in a second direction, and the pixel units in two adjacent rows are staggered so that the center line of the two green light-emitting patterns 83 in one row is roughly collinear with the center line of the line connecting the center point of the red light-emitting pattern 81 and the center point of the blue light-emitting pattern 82 in another adjacent row.

[0095] It should be noted that the arrangement of the pixel units is not limited to the above description. For example, the blue light-emitting pattern 82 may be closer to the green light-emitting pattern 83 than the red light-emitting pattern 81, and a gap may be provided between the blue light-emitting pattern 82 and the green light-emitting pattern 83; or no gap may be provided between the blue light-emitting pattern 82 and the green light-emitting pattern 83, or no gap may be provided between the red light-emitting pattern 81 and the green light-emitting pattern 83.

[0096] The side length of the small virtual square is equal to four pixel pitches. Each small virtual square contains eight complete light patterns. Four small virtual squares form a large virtual square.

[0097] In this example implementation, in order to avoid inconsistency in design and inconsistency in various auxiliary jigs and process flows in the preparation process, the pixel arrangement rule of the under-screen camera display area 141 is the same as the pixel arrangement rule of the normal display area 142. Therefore, the pixel arrangement rule of the normal display area 142 is not described in detail here. Of course, in other example implementations of the present invention, the pixel arrangement rule of the under-screen camera display area 141 and the pixel arrangement rule of the normal display area 142 may also be different, as long as the pixel density remains the same.

[0098] Please continue to refer to Figure 6 and Figure 7 As shown, in the under-screen camera display area 141, a transparent suppression pattern 10 is provided between two adjacent rows of adjacent red light-emitting patterns 81, blue light-emitting patterns 82 and two green light-emitting patterns 83. The transparent suppression pattern 10 may be elliptical, with both ends of the long axis of the transparent suppression pattern 10 being tangent to the two green light-emitting patterns 83, and both ends of the short axis of the transparent suppression pattern 10 being tangent to the red light-emitting pattern 81 and the blue light-emitting pattern 82. In addition, the structure of the transparent suppression pattern 10 is not limited to the above description, for example, the transparent suppression pattern 10 may also be provided in various shapes such as polygon, circle, rectangle, oval, etc.

[0099] exist Figure 6 and Figure 7 In the example implementation shown, the light transmittance of the under-screen camera display area 141 can reach 36%.

[0100] The arrangement of pixels is described in detail above through three example implementations. Those skilled in the art will understand that the arrangement of pixels is not limited to the above description. As long as the pixel density is guaranteed, any arrangement of pixels that can provide a larger area of ​​transparent suppression pattern 10 is feasible and falls within the scope of protection of the present invention.

[0101] Please continue to refer to Figure 1 As shown, in the under-screen camera display area 141, a first electrode 9 is provided on the side of the light-emitting layer away from the base substrate 1. The first electrode 9 may be a cathode 9. The material of the first electrode 9 is a conductive metal, specifically metal-modified magnesium. A plurality of through holes 901 are provided on the first electrode 9. The number of through holes 901 is the same as the number of transparent suppression patterns 10. The orthographic projection of the through holes 901 on the base substrate 1 coincides with the orthographic projection of the transparent suppression pattern 10 on the base substrate 1. That is, the first electrode 9 is not provided on the side of the transparent suppression pattern 10 away from the base substrate 1, but a through hole 901 is formed to increase the light transmittance of the under-screen camera display area 141.

[0102] The display panel may be a top emission type display panel or a bottom emission type display panel.

[0103] In addition, in other example embodiments of the present invention, the first via 51 may not be provided on the planarization layer, and the third via 61 may not be provided on the pixel definition layer, and the transparent suppression pattern may be directly provided on the pixel definition layer; a fifth via may also be provided on the insulating layer, the fifth via is connected to the first via 51 and the third via 61, and the transparent suppression pattern is formed in the fifth via, the first via 51 and the third via 61; or the third via 61 may be provided only on the pixel definition layer, the first via 51 may not be provided on the planarization layer, and the transparent suppression pattern may be formed in the third via 61.

[0104] Furthermore, this exemplary embodiment also provides a display device, which may include any one of the display panels described above. The specific structure of the display panel has been described in detail above, so it will not be repeated here.

[0105] The specific type of the display device is not particularly limited, and any type of display device commonly used in the field can be used, such as mobile devices such as mobile phones, wearable devices such as watches, VR devices, etc. Technical personnel in this field can make corresponding choices based on the specific purpose of the display device, which will not be repeated here.

[0106] It should be noted that, in addition to the display panel, the display device also includes other necessary components and components, such as a housing, a circuit board, a power cord, etc. Taking the display as an example, technical personnel in this field can make corresponding supplements based on the specific usage requirements of the display device, which will not be repeated here.

[0107] Compared with the prior art, the beneficial effects of the display device provided by the exemplary embodiment of the present invention are the same as the beneficial effects of the display panel provided by the above exemplary embodiment, which will not be described in detail herein.

[0108] Furthermore, this exemplary embodiment also provides a method for preparing a display panel, referring to Figure 8 The schematic flow chart of the method for preparing a display panel of the present invention is shown in FIG. 1 , and the method for preparing a display panel may include the following steps:

[0109] In step S10 , a base substrate 1 is provided. The base substrate 1 has a first region and a second region.

[0110] Step S20 , forming a light-emitting layer on one side of the base substrate 1 , wherein the light-emitting layer includes a plurality of light-emitting patterns, and the orthographic projections of the plurality of light-emitting patterns on the base substrate 1 do not overlap with each other.

[0111] Step S30 , forming a plurality of transparent inhibition patterns 10 in the first area and on one side of the base substrate 1 , wherein the transparent inhibition patterns 10 are located between at least part of the adjacent light emitting patterns, and the plurality of transparent inhibition patterns 10 are arranged at intervals.

[0112] In step S40, a first electrode 9 is formed on a side of the light-emitting layer away from the base substrate 1, and a plurality of through holes 901 are formed on the first electrode 9, wherein the orthographic projection of the through holes 901 on the base substrate 1 coincides with the orthographic projection of the transparent suppression pattern 10 on the base substrate 1.

[0113] The following is a detailed description of the method for preparing the display panel.

[0114] Reference Fig. 9 shown.

[0115] A substrate 1 is provided, wherein the substrate 1 has an under-screen camera display area 141 and a normal display area 142 surrounding the under-screen camera display area 141 .

[0116] An organic film layer 2 is formed on one side of the base substrate 1. The organic film layer 2 is a flexible film layer used as a substrate for the array substrate (the base substrate 1 can be peeled off in the subsequent process to leave the organic film layer 2 as a flexible substrate). A barrier layer 3 is formed on the side of the organic film layer 2 away from the base substrate 1. The barrier layer 3 is used to block the influence of water vapor and impurity ions (such as excess H+, etc.) in the organic film layer 2 on the semiconductor pattern (polysilicon active layer) formed subsequently; a buffer layer (not shown in the figure) can also be formed on the side of the barrier layer 3 away from the base substrate 1. The buffer layer plays a role in further blocking water vapor and impurity ions in the organic film layer 2, and plays a role in adding hydrogen ions to the semiconductor pattern formed subsequently.

[0117] An array substrate 4 is formed on a side of the barrier layer 3 away from the base substrate 1 . The array substrate 4 is prepared by a method in the prior art, which will not be described in detail herein.

[0118] A planarization layer 5 is formed on the side of the array substrate away from the base substrate 1 by evaporation, deposition, sputtering and other processes; and the planarization layer 5 is etched to form a first via hole 51 and a second via hole 52. The first via hole 51 is only formed in the under-screen camera display area 141, and the second via hole 52 is present on the entire display panel.

[0119] An anode material layer is formed on the side of the planarization layer 5 away from the base substrate 1 by evaporation, deposition, sputtering or other processes, and the anode material layer is etched to form an anode 7 (second electrode 7 ).

[0120] A pixel definition layer 6 is formed on the side of the anode 7 and the planarization layer 5 away from the base substrate 1 by evaporation, deposition, sputtering and other processes, and the pixel definition layer 6 is etched to form a third via hole 61 and a fourth via hole 62, the third via hole 61 is connected to the first via hole 51, and the fourth via hole 62 is connected to the anode 7 (second electrode 7).

[0121] Reference Figure 1 As shown, then, the organic light-emitting material is evaporated through the RGB fine metal mask to form a plurality of light-emitting patterns 8.

[0122] Reuse Fig.10The fine metal mask plate 12 with an opening 13 shown is used to evaporate the non-luminous area of ​​the under-screen camera display area 141. The shape and position of the opening 13 are consistent with the shape and position of the transparent suppression pattern 10. The evaporated material is a highly polar inorganic material or a highly polar organic material, which has been described in detail above and will not be repeated here.

[0123] Finally, an open mask is used to evaporate the cathode material, which is metal-modified magnesium. Fig.11 As shown, since the strong polar inorganic material or the strong polar organic material can effectively inhibit the film formation of metal-modified magnesium, the metal magnesium will not form a film but form a through hole 901 where the transparent inhibition pattern 10 is formed, thereby ensuring the light transmittance of the camera display area 141 under the screen; in the place where the transparent inhibition pattern 10 is not formed, the metal magnesium can be completely formed into a film to form the cathode 9, thereby realizing the cathode 9 evaporation in the light-emitting area, thereby ensuring the normal operation of the display panel.

[0124] Reference Fig.12 As shown, an encapsulation layer 11 is formed on the side of the cathode 9 away from the base substrate 1. From the figure, it can be seen that the cathode 9 is not formed on the transparent suppression pattern 10 of the under-screen camera display area 141, which improves the light transmittance of the under-screen camera display area 141.

[0125] The features, structures or characteristics described above may be combined in one or more embodiments in any suitable manner, and if possible, the features discussed in each embodiment are interchangeable. In the above description, many specific details are provided to provide a full understanding of the embodiments of the present invention. However, those skilled in the art will appreciate that the technical solution of the present invention may be practiced without one or more of the specific details, or other methods, components, materials, etc. may be adopted. In other cases, known structures, materials or operations are not shown or described in detail to avoid blurring various aspects of the present invention.

[0126] The terms "about" and "approximately" used in this specification generally mean within 20%, preferably within 10%, and more preferably within 5% of a given value or range. The numbers given here are approximate numbers, which means that in the absence of specific instructions, the meanings of "about", "approximately", "roughly" and "approximately" can still be implied.

[0127] Although relative terms such as "upper" and "lower" are used in this specification to describe the relative relationship of one component of the illustration to another component, these terms are used in this specification only for convenience, such as the orientation of the examples described in the drawings. It is understood that if the device of the illustration is turned over so that it is upside down, the component described as being "upper" will become the component "lower". Other relative terms, such as "high", "low", "top", "bottom", etc., are also used to have similar meanings. When a structure is "on" other structures, it may mean that the structure is formed integrally on the other structure, or that the structure is "directly" disposed on the other structure, or that the structure is "indirectly" disposed on the other structure through another structure.

[0128] In this specification, the terms "a", "an", "the", "said" and "at least one" are used to indicate the presence of one or more elements / components / etc.; the terms "comprising", "including" and "having" are used to express an open-ended inclusion and mean that additional elements / components / etc. may exist in addition to the listed elements / components / etc.; the terms "first", "second" and "third" etc. are used only as labels and are not intended to limit the quantity of their objects.

[0129] It should be understood that the present invention is not limited in its application to the detailed structure and arrangement of the components proposed in this specification. The present invention can have other embodiments and can be implemented and executed in a variety of ways. The aforementioned variations and modifications fall within the scope of the present invention. It should be understood that the present invention disclosed and defined in this specification extends to all alternative combinations of two or more individual features mentioned or evident in the text and / or the drawings. All these different combinations constitute multiple alternative aspects of the present invention. The embodiments described in this specification illustrate the best mode known for implementing the present invention and will enable those skilled in the art to utilize the present invention.

Claims

1. A display panel having a first area and a second area, It is characterized in that The display panel comprises: substrate substrate; A light-emitting layer is provided on one side of the base substrate, the light-emitting layer comprises a plurality of light-emitting patterns, and the orthographic projections of the plurality of light-emitting patterns on the base substrate do not overlap with each other; A plurality of transparent inhibition patterns are provided on one side of the base substrate and are located between at least part of the adjacent light-emitting patterns, and the transparent inhibition patterns are located in the first area, and the plurality of transparent inhibition patterns are arranged at intervals; A first electrode is disposed on a side of the light-emitting layer away from the base substrate, the first electrode is provided with a plurality of through holes, and the orthographic projection of the through holes on the base substrate coincides with the orthographic projection of the transparent inhibition pattern on the base substrate; The display panel further includes pixel units arranged in an array, the pixel units including a first light-emitting pattern, a second light-emitting pattern and two third light-emitting patterns, the peripheral tangent lines of the pixel units form a rectangle; in a first direction, the corners of two adjacent rectangles are arranged opposite to each other, and a plurality of the rectangles are arranged to form a plurality of rows, and two adjacent rows are staggered; a transparent suppression pattern is arranged between at least two adjacent pixel units; Alternatively, in a first direction, the first light-emitting pattern and the second light-emitting pattern are alternately arranged to form a first row, and the third light-emitting pattern is arranged to form a second row; in a second direction, the first row and the second row are alternately arranged, and the first direction and the second direction are substantially perpendicular; two of the first light-emitting patterns and two of the second light-emitting patterns distributed in two adjacent rows and columns form a virtual quadrilateral, and the third light-emitting pattern is located in the virtual quadrilateral; the transparent suppression pattern is arranged between two adjacent third light-emitting patterns, and the transparent suppression pattern is arranged between adjacent first light-emitting patterns and second light-emitting patterns; Alternatively, the display panel also includes pixel units arranged in an array, the pixel units including a first light-emitting pattern, a second light-emitting pattern and two third light-emitting patterns, the two third light-emitting patterns are arranged in the second direction, one first light-emitting pattern and one second light-emitting pattern are arranged in the first direction, the first light-emitting pattern and the second light-emitting pattern are located on the center line of a line connecting the center points of the two third light-emitting patterns; in the first direction, a plurality of the pixel units are arranged to form a row, the pixel units in two adjacent rows are staggered, and the first direction and the second direction are approximately perpendicular; the transparent inhibition pattern is arranged between adjacent first light-emitting patterns, the second light-emitting patterns and two third light-emitting patterns in two adjacent rows.

2. The display panel according to claim 1, It is characterized in that The pixel density of the first area is the same as the pixel density of the second area.

3. The display panel according to claim 1, It is characterized in that The display panel further includes: A planarization layer, disposed on one side of the base substrate, wherein the planarization layer is provided with a first via hole; A pixel definition layer, disposed on a side of the planarization layer away from the base substrate, wherein a third via hole and a fourth via hole are disposed on the pixel definition layer, and the third via hole is connected to the first via hole; The transparent suppression pattern is disposed in the first and third via holes that are connected, and the light emitting pattern is disposed in the fourth via hole.

4. The display panel according to claim 1, It is characterized in that The material of the transparency suppression pattern is a strong polar inorganic material or a strong polar organic material, and the material of the first electrode is a conductive metal.

5. The display panel according to claim 1, It is characterized in that The transparent inhibition pattern includes a middle area and four edge areas connected to the middle area, the middle area is circular, and the edge areas are long strips.

6. The display panel according to claim 1, It is characterized in that The transparent suppression pattern is configured in an elliptical shape.

7. The display panel according to any one of claims 1, 5 to 6, It is characterized in that The first light emitting pattern is a red light emitting pattern, the second light emitting pattern is a blue light emitting pattern, and the third light emitting pattern is a green light emitting pattern.

8. A display device, It is characterized in that A display panel comprising any one of claims 1 to 7.

9. A method for preparing a display panel, for preparing the display panel according to any one of claims 1 to 7, It is characterized in that include: Providing a substrate, the substrate having a first area and a second area; forming a light-emitting layer on one side of the base substrate, wherein the light-emitting layer includes a plurality of light-emitting patterns, and the orthographic projections of the plurality of light-emitting patterns on the base substrate do not overlap with each other; In the first area, a plurality of transparent inhibition patterns are formed on one side of the base substrate, wherein the transparent inhibition patterns are located between at least part of the adjacent light emitting patterns, and the plurality of transparent inhibition patterns are arranged at intervals; A first electrode is formed on a side of the light emitting layer away from the base substrate, and a plurality of through holes are formed on the first electrode, wherein the orthographic projection of the through holes on the base substrate coincides with the orthographic projection of the transparent suppression pattern on the base substrate.

10. The method for preparing a display panel according to claim 9, It is characterized in that The preparation method further comprises: Forming a planarization layer on one side of the base substrate, and forming a first via hole on the planarization layer; forming a pixel definition layer on a side of the planarization layer away from the base substrate, and forming a third via hole and a fourth via hole on the pixel definition layer, wherein the third via hole is connected to the first via hole; The light emitting pattern is formed in the third via hole, and the transparency suppressing pattern is formed in the communicating first via hole and the third via hole.

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