Display panel and display device

Abstract

The invention provides a display panel and a display device, the display panel comprises a display area, and the display area comprises a first area and a second area. The display panel further comprises a substrate, and a display function layer, an isolation structure, a shielding structure and a plurality of light recognition units which are located on the substrate. The display function layer comprises a light-emitting unit located in the display area, the light recognition unit is located in the second area, the isolation structure is located in the first area and defines a plurality of isolation openings, the isolation openings limit the light-emitting unit, and the shielding structure is located in the second area and located between the light recognition unit and the light-emitting unit. At least part of the shielding structure and at least part of the isolation structure are in the same layer and made of the same material. Therefore, the use performance of the display panel can be improved.

Description

Technical Field

[0001] The present disclosure relates to the field of display technology, and in particular, to a display panel and a display device. Background Art

[0002] Organic Light-Emitting Diode (OLED) is an organic thin film electroluminescent unit. It has attracted great attention and is widely used in electronic display products due to its advantages such as simple preparation process, low cost, low power consumption, high brightness, wide viewing angle, high contrast and flexible display.

[0003] Electronic display products can be applied to scenarios such as optical fingerprint recognition. However, current electronic display products need to further improve their performance. For example, electronic display products are limited by their own structural design. While increasing pixel density, they need to alleviate the impact of interfering light on recognition accuracy and control production costs. Summary of the invention

[0004] In a first aspect, the present disclosure provides a display panel, which includes a display area, and the display area includes a first area and a second area. The display panel also includes a substrate and a display function layer, an isolation structure, a shielding structure, and a plurality of light recognition units located on the substrate. The display function layer includes a light-emitting unit located in the display area, the light recognition unit is located in the second area, the isolation structure is located in the first area and defines a plurality of isolation openings, the isolation openings limit the light-emitting unit, the shielding structure is located in the second area and is located between the light recognition unit and the light-emitting unit, and at least a portion of the shielding structure is in the same layer and made of the same material as at least a portion of the isolation structure.

[0005] In the above solution, at least part of the shielding structure can be prepared while preparing the isolation structure, thereby reducing or avoiding the increase in the display panel preparation process due to the provision of the shielding structure, thereby reducing the preparation cost of the display panel.

[0006] In a specific embodiment of the first aspect of the present disclosure, the orthographic projection of the end of the isolation structure facing the substrate on the substrate is located within the orthographic projection of the end of the isolation structure facing away from the substrate on the substrate.

[0007] In the above scheme, the isolation structure is roughly wide at the top and narrow at the bottom, so that during the preparation process of the light-emitting unit, the evaporation range of the relevant evaporated film layer can be limited to ensure the electrical performance of the light-emitting unit (such as the connection of the second electrode described below) while having an isolation effect on some film layers in the light-emitting unit (such as the light-emitting functional layer described below).

[0008] Optionally, the projection of the substrate-facing end of the shielding structure on the substrate is located within the projection of the substrate-facing end of the shielding structure on the substrate.

[0009] In a specific embodiment of the first aspect of the present disclosure, the substrate-facing end of the isolation structure includes a first conductive portion, the substrate-facing end of the shielding structure includes a second conductive portion, the light-emitting unit includes a first electrode, a light-emitting functional layer, and a second electrode stacked in sequence on the substrate. In the first region, the second electrode is connected to the first conductive portion, and in the second region, the second electrode is connected to the second conductive portion. The light recognition unit includes a third electrode, a recognition functional layer, and a fourth electrode stacked in sequence on the substrate. In the second region, the fourth electrode is connected to the second conductive portion.

[0010] In the above solution, while the isolation structure and the shielding structure partition the light-emitting unit and the light recognition unit, the first conductive portion and the second conductive portion can ensure the continuity of the electrical connection between the second electrode and the fourth electrode, so as to eliminate the influence on the electrical functions of the second electrode and the fourth electrode due to the arrangement of the isolation structure and the shielding structure.

[0011] Optionally, the first conductive portion and the second conductive portion are of the same layer and the same material. In this way, the manufacturing process flow of the display panel increased due to the arrangement of the shielding structure can be further reduced, so as to further reduce the manufacturing cost of the display panel.

[0012] Optionally, the second electrode and the fourth electrode are of the same layer and the same material. In this way, the manufacturing process flow of the display panel increased due to the arrangement of the light recognition unit can be reduced, so as to further reduce the manufacturing cost of the display panel.

[0013] Optionally, the first electrode and the third electrode are of the same layer and the same material. In this way, the manufacturing process flow of the display panel increased due to the arrangement of the light recognition unit can be further reduced, so as to further reduce the manufacturing cost of the display panel.

[0014] In a specific embodiment of the first aspect of the present disclosure, the isolation structure includes a first support portion and a first crown portion. The first support portion is located between the first crown portion and the substrate, and the projection of the first support portion on the substrate is located within the projection of the first crown portion on the substrate. The shielding structure includes a second support portion and a second crown portion. The second support portion is located between the second crown portion and the substrate, and the projection of the second support portion on the substrate is located within the projection of the second crown portion on the substrate.

[0015] Optionally, the first support portion and the second support portion are of the same layer and the same material; and / or, the first crown portion and the second crown portion are of the same layer and the same material.

[0016] Optionally, the first support portion is the first conductive portion, and the second support portion is the second conductive portion.

[0017] Optionally, the first support portion includes a first sub-support layer and a second sub-support layer. The second sub-support layer is located between the first sub-support layer and the first crown portion. The orthographic projection of the second sub-support layer on the substrate is located within the orthographic projection of the first sub-support layer on the substrate. The second support portion includes a third sub-support layer and a fourth sub-support layer. The third sub-support layer is located between the fourth sub-support layer and the substrate. The fourth sub-support layer is located between the third sub-support layer and the second crown portion. The orthographic projection of the fourth sub-support layer on the substrate is located within the orthographic projection of the third sub-support layer on the substrate.

[0018] In the above solution, the portion of the surface of the first sub-support layer facing away from the substrate that is not covered by the second sub-support layer can be used to contact the second electrode, and can enable the second electrode to have a relatively large deposition thickness on the first sub-support layer, so as to reduce the impedance at the connection between the second electrode and the first support portion; correspondingly, the portion of the surface of the third sub-support layer facing away from the substrate that is not covered by the fourth sub-support layer can be used to contact the fourth electrode, and can enable the fourth electrode to have a relatively large deposition thickness on the third sub-support layer, so as to reduce the impedance at the connection between the fourth electrode and the third sub-support layer.

[0019] In a specific implementation manner of the first aspect of the present disclosure, the display panel may further include a pixel defining layer, which is located between the isolation structure and the substrate and between the shielding structure and the substrate. The pixel defining layer defines a plurality of pixel openings, and the pixel openings limit the light-emitting unit or the light recognition unit. The pixel openings and the isolation openings limiting the same light-emitting unit communicate with each other.

[0020] Optionally, the pixel defining layer is an inorganic layer.

[0021] Optionally, the pixel defining layer covers the edges of the first electrode and the third electrode.

[0022] In the above solution, the pixel defining layer can enable the first electrode and the third electrode to have a relatively large design area, so as to increase the light-emitting area of the light-emitting unit and the area of the portion of the light recognition unit for recognizing optical signals.

[0023] In a specific implementation manner of the first aspect of the present disclosure, the light-emitting units are at least divided into a first light-emitting unit, a second light-emitting unit, and a third light-emitting unit with different light-emitting colors. A shielding structure is provided between the first light-emitting unit and the light recognition unit and between the third light-emitting unit and the light recognition unit.

[0024] Optionally, the wavelengths of the emitted light rays of the first light-emitting unit, the second light-emitting unit, and the third light-emitting unit decrease in sequence.

[0025] Optionally, the second light-emitting unit emits green light. For example, further optionally, the first light-emitting unit and the third light-emitting unit sequentially emit red light and blue light.

[0026] In a specific implementation of the first aspect of the present disclosure, the display panel includes a plurality of pixel repeating units. Each pixel repeating unit includes at least one first light-emitting unit, at least one second light-emitting unit, and at least one third light-emitting unit. In the second region, at least one pixel repeating unit further includes at least one light recognition unit.

[0027] In the above solution, one type of light-emitting unit in the pixel repeating unit, such as the second light-emitting unit, can be used both for displaying an image and for recognition (emitting an optical signal for recognition), so as to simplify the structure of the display panel and increase the pixel density PPI of the display panel.

[0028] Optionally, the light-blocking structure includes a plurality of light-blocking units. The light-blocking units are in the shape of line segments and are arranged between the first light-emitting unit and the light recognition unit, and between the third light-emitting unit and the light recognition unit. In this way, while the light emitted by the second light-emitting unit can be reflected and then enter the light recognition unit, the light reflected after being emitted by the first light-emitting unit and the third light-emitting unit can be blocked, thereby preventing the light emitted by the first light-emitting unit and the third light-emitting unit from interfering with the light recognition unit.

[0029] Optionally, the distance from the centroid of the second light-emitting unit to the centroid of the adjacent light recognition unit is less than the distance from the centroid of any one of the first light-emitting unit and the third light-emitting unit to the centroid of the adjacent light recognition unit.

[0030] In the above solution, by controlling the distance difference between each light-emitting unit and the light recognition unit, more light emitted by the second light-emitting unit can enter (enter after reflection) the light recognition unit, while less light emitted by the first light-emitting unit and the third light-emitting unit can enter (enter after reflection) the light recognition unit.

[0031] For example, optionally, the light-blocking structure includes a plurality of light-blocking units. The light-blocking units are in the shape of line segments and are arranged between the first light-emitting unit and the light recognition unit, and between the third light-emitting unit and the light recognition unit.

[0032] For example, in one implementation, under the above design of the centroid, the region between the adjacent second light-emitting unit and the light recognition unit is outside the region where the light-blocking unit is located, that is, no light-blocking unit is provided between the second light-emitting unit and the light recognition unit. In this way, the light flux emitted by the second light-emitting unit and entering the light recognition unit can be further increased to improve the accuracy of light recognition.

[0033] For example, in another embodiment, under the design regarding the above centroid, an occlusion unit is arranged between the second light-emitting unit and the light recognition unit. In this way, the occlusion unit can be used to prepare (equivalent to an isolation structure) adjacent second light-emitting units and light recognition units.

[0034] For example, optionally, the occlusion structure includes a plurality of occlusion units, the occlusion units are annular, and surround the light recognition unit.

[0035] For example, optionally, the occlusion structure is in a grid shape to have a plurality of first openings and a plurality of second openings. The first openings limit the light-emitting units, and the second openings limit the light recognition units; further optionally, the occlusion structure and the isolation structure are connected to each other and integrally formed.

[0036] Optionally, the first light-emitting unit, the second light-emitting unit, and the third light-emitting unit are strip-shaped, and the length directions of the first light-emitting unit and the third light-emitting unit point to the adjacent light recognition units, and the width direction of the second light-emitting unit points to the adjacent light recognition units.

[0037] Optionally, the light recognition unit is located between two second light-emitting units. In this way, the light flux emitted from the second light-emitting unit and incident on the light recognition unit can be increased.

[0038] In another specific embodiment of the first aspect of the present disclosure, the display panel includes a plurality of pixel repeating units. In the second region, at least one pixel repeating unit includes at least one first light-emitting unit, at least four second light-emitting units, at least one third light-emitting unit, and at least two light recognition units. And in the pixel repeating units including light recognition units in the second region, at least two second light-emitting units are second-type light-emitting units, and at least two other second light-emitting units are first-type light-emitting units. In the above solution, the first-type light-emitting units in the pixel repeating units can be used to display images, and the second-type light-emitting units are used for recognition (emitting optical signals for recognition), thereby reducing the aging rate of the light-emitting units and increasing the lifespan of the display panel.

[0039] Optionally, the occlusion structure includes a plurality of occlusion units, the occlusion units are in a line shape, and are arranged between the first light-emitting unit and the light recognition unit and between the third light-emitting unit and the light recognition unit.

[0040] For example, in one embodiment, under the design that the above occlusion unit is in a line shape, the region between the adjacent first-type light-emitting unit and the light recognition unit is outside the region where the occlusion unit is located, that is, no occlusion unit is provided between the first-type light-emitting unit and the light recognition unit. In this way, the light emitted by the first-type light-emitting unit can be used for optical signal recognition to improve the accuracy of light recognition.

[0041] For example, in another embodiment, under the design where the above-mentioned shielding unit is in the shape of a line segment, a shielding unit is arranged between the first type of light-emitting unit and the light recognition unit. In this way, the shielding unit can be used to prepare (equivalent to an isolation structure) adjacent first type of light-emitting units and light recognition units.

[0042] Optionally, the distance from the centroid of the second type of light-emitting unit to the centroid of the adjacent light recognition unit is less than the distance from the centroid of any one of the first light-emitting unit, the first type of light-emitting unit, and the third light-emitting unit to the centroid of the adjacent light recognition unit.

[0043] In the above solution, by controlling the distance difference between each light-emitting unit and the light recognition unit, more light emitted by the second type of light-emitting unit can be incident (after reflection) into the light recognition unit, while less light emitted by other light-emitting units can be incident (after reflection) into the light recognition unit.

[0044] For example, optionally, the shielding structure includes a plurality of shielding units, the shielding units are in the shape of line segments, and are arranged between the first light-emitting unit and the light recognition unit and between the third light-emitting unit and the light recognition unit.

[0045] For example, in one embodiment, under the design regarding the above-mentioned centroid and the shielding unit being in the shape of a line segment, the area between adjacent first type of light-emitting units and light recognition units is located outside the area where the shielding unit is located, that is, no shielding unit is provided between the first type of light-emitting units and the light recognition units. In this way, the light emitted by the first type of light-emitting units can be used for optical signal recognition to improve the accuracy of optical recognition.

[0046] For example, in another embodiment, under the design regarding the above-mentioned centroid and the shielding unit being in the shape of a line segment, a shielding unit is arranged between the first type of light-emitting units and the light recognition units. In this way, the shielding unit can be used to prepare (equivalent to an isolation structure) adjacent first type of light-emitting units and light recognition units.

[0047] For example, optionally, the shielding structure includes a plurality of shielding units, the shielding units are in the shape of a ring, and surround the light recognition unit.

[0048] For example, optionally, the shielding structure is grid-shaped to have a plurality of first openings and a plurality of second openings. The first openings limit the light-emitting units, and the second openings limit the light recognition units; further optionally, the shielding structure and the isolation structure are connected to each other and integrally formed.

[0049] Optionally, the first light-emitting unit, the first type of light-emitting unit, the second type of light-emitting unit, and the third light-emitting unit are strip-shaped, and the length directions of the first light-emitting unit, the first type of light-emitting unit, and the third light-emitting unit point to the adjacent light recognition unit, and the width direction of the second type of light-emitting unit points to the adjacent light recognition unit.

[0050] Optionally, in the pixel repeating unit, the number ratio of the first light-emitting unit, the second type of light-emitting unit, the first type of light-emitting unit, the third light-emitting unit, and the light recognition unit is 1:2:2:1:2.

[0051] Optionally, when the display panel is in the recognition state, the first light-emitting unit, the second light-emitting unit, the third light-emitting unit, and the light recognition unit are turned on; and / or, when the display panel is in the non-recognition state (only for display), the light recognition unit is turned off, and the second type of light-emitting unit is turned off, or the light-emitting brightness of the second type of light-emitting unit is less than that of the first type of light-emitting unit. In this way, regardless of whether the display panel is in the recognition state, the display panel can maintain the display function.

[0052] Optionally, when the pixel repeating unit includes the second type of light-emitting unit, the light recognition unit is located between two second light-emitting units. In this way, the light flux emitted from the second light-emitting unit and incident on the light recognition unit can be increased.

[0053] In a specific embodiment of the first aspect of the present disclosure, the display panel may further include a first encapsulation layer, which is located on the side of the display function layer away from the substrate and covers the light-emitting unit and the light recognition unit.

[0054] Optionally, the first encapsulation layer includes a plurality of spaced-apart encapsulation units, and at least some of the encapsulation units respectively correspond to the isolation openings to cover the light-emitting units limited in the isolation openings. The light-emitting unit and the light recognition unit are prepared in batches. During the preparation process of each batch, the encapsulation unit can protect the prepared light-emitting unit and / or light recognition unit. Correspondingly, during these preparation processes, the first encapsulation layer will be formed into a plurality of spaced-apart encapsulation units.

[0055] Optionally, the display panel further includes a second encapsulation layer and a third encapsulation layer covering the first encapsulation layer. The second encapsulation layer is located between the first encapsulation layer and the third encapsulation layer. The first encapsulation layer covers the light recognition unit and the light-emitting unit. The third encapsulation layer covers the first encapsulation layer and the second encapsulation layer, and the second encapsulation layer is a planarization layer.

[0056] Optionally, the first encapsulation layer and the third encapsulation layer are inorganic layers, and the second encapsulation layer is an organic layer.

[0057] The second aspect of the present disclosure provides a display panel, which includes a display area. The display area includes a second area. In the second area, the display panel includes a plurality of pixel repeating units. The pixel repeating unit includes a first light-emitting unit, at least two second light-emitting units, a third light-emitting unit, and at least one light recognition unit. The light recognition unit and at least some of the second light-emitting units are alternately arranged.

[0058] In a specific embodiment of the second aspect of the present disclosure, the pixel repetition unit includes two light recognition units and four second light-emitting units. In the pixel repetition unit, two of the second light-emitting units are light signal emitting units, and the other two second light-emitting units are non-light signal emitting units.

[0059] Optionally, the two light recognition units and the two non-light signal emitting units are arranged alternately.

[0060] In a specific embodiment of the second aspect of the present disclosure, the light recognition units in the pixel repetition unit are arranged between two second-type light-emitting units that are adjacent to each other and are respectively located in two pixel repetition units.

[0061] Optionally, in each pixel repetition unit, one light recognition unit is located between two first-type light-emitting units in the pixel repetition unit where it is located, and the other light recognition unit is arranged between two first-type light-emitting units that are adjacent to each other and are respectively located in two pixel repetition units.

[0062] In a specific embodiment of the second aspect of the present disclosure, when the display panel is in the recognition state, the first light-emitting unit, the second light-emitting unit, the third light-emitting unit, and the light recognition unit are turned on; and / or, when the display panel is in the non-recognition state, the light recognition unit is turned off, and the second-type light-emitting unit is turned off, or the light recognition unit is turned off, and the light-emitting brightness of the second-type light-emitting unit is less than the light-emitting brightness of the first-type light-emitting unit.

[0063] In a specific embodiment of the second aspect of the present disclosure, in the second region, the first light-emitting unit, the first-type light-emitting unit, the second-type light-emitting unit, the third light-emitting unit, and the light recognition unit are arranged in multiple rows and multiple columns. The first light-emitting unit and the third light-emitting unit are arranged in different columns. Light recognition units are arranged in the columns corresponding to the first light-emitting unit and the third light-emitting unit. The first-type light-emitting unit and the second-type light-emitting unit are arranged in the same column. The column in which the first-type light-emitting unit is arranged is located between the column in which the first light-emitting unit is arranged and the column in which the third light-emitting unit is arranged. The first light-emitting unit, the third light-emitting unit, and the second-type light-emitting unit are arranged in the same row. The first-type light-emitting unit and the light recognition unit are arranged in the same row. The rows in which the second-type light-emitting unit is arranged and the rows in which the first-type light-emitting unit is arranged are arranged alternately.

[0064] In another specific embodiment of the second aspect of the present disclosure, in the second region, at least one second light-emitting unit in the pixel repetition unit is a second type of light-emitting unit, and at least another second light-emitting unit is a first type of light-emitting unit. The first light-emitting unit, the first type of light-emitting unit, the second type of light-emitting unit, the third light-emitting unit, and the light recognition unit are arranged in multiple rows and multiple columns. The first light-emitting unit, the third light-emitting unit, and the light recognition unit are arranged in the same column. The first type of light-emitting unit and the second type of light-emitting unit are arranged in the same column. The columns in which the first light-emitting unit is arranged and the columns in which the first type of light-emitting unit is arranged are alternately arranged. The first light-emitting unit, the third light-emitting unit, and the second type of light-emitting unit are arranged in the same row. The first type of light-emitting unit and the light recognition unit are arranged in the same row. The rows in which the first type of light-emitting unit is arranged and the rows in which the second type of light-emitting unit is arranged are alternately arranged.

[0065] In another specific embodiment of the second aspect of the present disclosure, the wavelengths of the emitted light rays of the first light-emitting unit, the second light-emitting unit, and the third light-emitting unit decrease in sequence.

[0066] In another specific embodiment of the second aspect of the present disclosure, the second light-emitting unit emits green light rays, and the first light-emitting unit and the third light-emitting unit emit red light rays and blue light rays in sequence.

[0067] In another specific embodiment of the second aspect of the present disclosure, the distance from the centroid of the second type of light-emitting unit to the centroid of the adjacent light recognition unit is less than the distance from the centroid of any one of the first light-emitting unit, the first type of light-emitting unit, and the third light-emitting unit to the centroid of the adjacent light recognition unit.

[0068] In a specific embodiment of the second aspect of the present disclosure, the first light-emitting unit, the first type of light-emitting unit, the second type of light-emitting unit, and the third light-emitting unit are strip-shaped, and the length directions of the first light-emitting unit, the first type of light-emitting unit, and the third light-emitting unit point to the adjacent light recognition unit, and the width direction of the second type of light-emitting unit points to the adjacent light recognition unit.

[0069] In a specific embodiment of the second aspect of the present disclosure, the display panel includes a substrate and an isolation structure and a shielding structure located on the substrate. The light recognition unit, the first light-emitting unit, the second light-emitting unit, and the third light-emitting unit are located on the substrate; the isolation structure is located in the first region and defines a plurality of isolation openings, and the isolation openings limit the light recognition unit, the first light-emitting unit, the second light-emitting unit, and the third light-emitting unit; the shielding structure is located in the second region and on the substrate, and is located between the light recognition unit and the light-emitting unit, and at least part of the shielding structure is on the same layer and of the same material as at least part of the isolation structure.

[0070] In a specific embodiment of the second aspect of the present disclosure, the display panel further includes a substrate and an occlusion structure located on the substrate. The light recognition unit, the first light-emitting unit, the second light-emitting unit, and the third light-emitting unit are located on the substrate. The occlusion structure is located in the second region and on the substrate, and the occlusion structure is located between the light recognition unit and the light-emitting unit.

[0071] In a specific embodiment of the second aspect of the present disclosure, the display area further includes a first region, and the first light-emitting unit, the second light-emitting unit, and the third light-emitting unit are arranged in the first region. The display panel further includes an isolation structure, the isolation structure is located in the first region and on the substrate, the isolation structure defines a plurality of isolation openings, and the isolation openings limit the first light-emitting unit, the second light-emitting unit, and the third light-emitting unit. At least part of the occlusion structure and at least part of the isolation structure are of the same layer and the same material.

[0072] The third aspect of the present disclosure provides a display device, and the display device may include the display panel in any one of the embodiments of the first aspect and the second aspect described above. Description of the Drawings

[0073] Figure 1 It is a schematic plan view of a display panel provided by an embodiment of the present disclosure.

[0074] Figure 2 It is Figure 1 An enlarged view of region S1 of the shown display panel in a design.

[0075] Figure 3A It is Figure 2 A cross-sectional view of the shown display panel along M1-N1 in a design.

[0076] Figure 3B It is Figure 2 A cross-sectional view of the shown display panel along M2-N2 in a design.

[0077] Figure 4A It is Figure 2 A cross-sectional view of the shown display panel along M1-N1 in another design.

[0078] Figure 4B It is Figure 2 A cross-sectional view of the shown display panel along M2-N2 in another design.

[0079] Figure 5 It is Figure 1 An enlarged view of region S1 of the shown display panel in another design.

[0080] Figure 6 It is Figure 1 An enlarged view of region S1 of the shown display panel in another design.

[0081] Figure 7 For Figure 1 An enlarged view of region S1 of the display panel shown under another design.

[0082] Figure 8 A schematic plan view of a partial region of a second region of a display panel provided by an embodiment of the present disclosure under another design.

[0083] Figure 9 A schematic plan view of a partial region of a second region of a display panel provided by an embodiment of the present disclosure under another design.

[0084] Figure 10 A schematic plan view of a partial region of a second region of a display panel provided by an embodiment of the present disclosure under another design.

[0085] Figure 11 A schematic plan view of a partial region of a second region of a display panel provided by an embodiment of the present disclosure under another design.

[0086] Figure 12 A schematic plan view of a partial region of a second region of a display panel provided by an embodiment of the present disclosure under another design.

[0087] Figure 13A For Figure 2 A cross-sectional view of the display panel shown along M1-N1 under one design.

[0088] Figure 13B For Figure 2 A cross-sectional view of the display panel shown along M2-N2 under one design.

[0089] Figure 14A , Figure 14B , Figure 15A , Figure 15B , Figure 16A , Figure 16B , Figure 17A And Figure 17B A process diagram of a manufacturing method provided by an embodiment of the present disclosure for forming a display panel as shown in Figure 3A And Figure 3B shown.

[0090] Explanation of reference numerals:

[0091] 10 - Display panel; 11 - Display area; 11a - First area; 11b - Second area; 12 - Border area; 100 - Substrate; 200 - Light-emitting unit; 210 - First electrode; 220 - Light-emitting functional layer; 221 - First functional layer; 222 - Light-emitting layer; 223 - Second functional layer; 230 - Second electrode; 200a - Light recognition unit; 210a - Third electrode; 220a - Recognition functional layer; 230a - Fourth electrode; 300 - Isolation structure; 300a - Occlusion structure; 301 - Isolation opening; 302 - Pixel opening; 310 - First support portion; 311 - First sub-support layer; 312 - Second sub-support layer; 320 - First crown portion; 310a - Second support portion; 311a - Third sub-support layer; 312a - Fourth sub-support layer; 320a - Second crown portion; 330 - Pixel defining layer; 510 - First encapsulation layer; 511 - Encapsulation unit; 520 - Second encapsulation layer; 530 - Third encapsulation layer; 600 - Photoresist pattern. Detailed implementation manners

[0092] Next, the technical solutions in the embodiments of this specification will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of this specification. Obviously, the described embodiments are only a part of the embodiments of this specification, rather than all the embodiments. Based on the embodiments in this specification, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of this specification.

[0093] In a display product, in a fingerprint recognition area, both the fingerprint recognition function and the display function are considered. However, the light of some sub-pixels used for display is reflected by fingerprints and the like and then enters the element for fingerprint recognition (such as the light recognition unit described below), which will interfere with fingerprint recognition and thus affect the accuracy of fingerprint recognition. Therefore, an occlusion structure can be provided in the fingerprint recognition area to occlude the light emitted at a large inclination angle by these sub-pixels. However, the setting of the occlusion structure will increase the manufacturing process flow of the display product, resulting in a relatively high cost.

[0094] In addition, in display products, some functional film layers in the light-emitting unit are formed by evaporation, and there are multiple functional film layers in the light-emitting unit, and the materials of some functional film layers (such as the light-emitting layer) in the light-emitting units that emit different light are different. Therefore, when evaporating these functional film layers through a mask plate (such as a fine mask plate), multiple alignments are required. In order to solve the position offset problem caused by the alignment accuracy error, sufficient space (and the safety margin related to the alignment error) needs to be reserved between different light-emitting units to ensure that the position of the actual light-emitting area of ​​the light-emitting unit can have a certain overlap rate with the designed position (design area), which is equivalent to compressing the design area of ​​the light-emitting area of ​​the light-emitting unit, which not only limits the light-emitting area of ​​the light-emitting unit, but also prevents the arrangement density of the light-emitting unit from being further increased, thereby making it difficult to further improve the PPI (pixel density) of the display panel.

[0095] In the present disclosure, an isolation structure is provided at the gap between the light-emitting units to separate the functional film layers of the adjacent light-emitting units. Thus, in the evaporation process of the functional film layer, it is only necessary to perform evaporation on the entire surface of the display panel without using a fine mask plate to separately prepare the functional film layer of the light-emitting unit. The process does not need to consider the alignment accuracy during evaporation, so that the gap between the light-emitting units can be designed to be smaller in size to increase the PPI (the principle of which can be referred to in the following and Figures 14A to 17B (See also the relevant description in the relevant embodiments).

[0096] It should be noted that when preparing the light-emitting unit through the isolation structure, because the light-emitting unit is prepared in batches according to different light-emitting colors, after the preparation of the previous batch of light-emitting units is completed, a packaging structure will be formed thereon for protection, so as to reduce the damage to the previous batch of light-emitting units caused by the preparation process when preparing the next batch of light-emitting units. Therefore, the packaging effect of the packaging structure will directly affect the preparation yield of the light-emitting unit. However, due to the setting of the isolation structure, the packaging structure will form an open space (the chamber mentioned below) at the edge of the isolation structure. In this space, the thickness of the packaging structure is limited and the film quality is low. In the subsequent preparation process of the light-emitting unit, the space may also store a large amount of corrosive liquid (or etching gas, such as for removing photoresist), thereby damaging the packaging structure at the space, which will not only lead to poor packaging, but also may cause damage to the light-emitting unit to cause poor display.

[0097] Embodiments of the present disclosure provide a display panel and a display device. By simultaneously providing an isolation structure and a shielding structure, and arranging the isolation structure and the shielding structure to be prepared at least partially in the same layer, the manufacturing process of the display panel is simplified, thereby at least solving the above technical problems. The display panel includes a display area, and the display area includes a first area and a second area. The display panel further includes a substrate, and a display function layer, an isolation structure, a shielding structure, and a plurality of light recognition units located on the substrate. The display function layer includes light-emitting units located in the display area, the light recognition units are located in the second area, the isolation structure is located in the first area and defines a plurality of isolation openings, the isolation openings limit the light-emitting units, the shielding structure is located in the second area and between the light recognition units and the light-emitting units, and at least a part of the shielding structure is in the same layer and of the same material as at least a part of the isolation structure. In this way, at least a part of the shielding structure can be prepared simultaneously while preparing the isolation structure, thereby reducing or avoiding the manufacturing process flow of the display panel increased due to the provision of the shielding structure, so as to reduce the manufacturing cost of the display panel.

[0098] Next, the structure of the display panel according to at least one embodiment of the present disclosure will be described in detail with reference to the drawings. In addition, in these drawings, a spatial rectangular coordinate system is established based on the substrate to more intuitively present the positional relationship of the relevant structures in the display panel. In this spatial rectangular coordinate system, the X-axis and the Y-axis are parallel to the plane of the substrate, and the Z-axis is perpendicular to the plane of the substrate.

[0099] As Figure 1 、 Figure 2 、 Figure 3A and Figure 3B shown, the planar area of the display panel 10 can be divided into a display area 11 and a border area 12 surrounding the display area 11. Sub-pixels (which can be referred to as sub-pixels, etc.) can be arranged in the display area 11. For example, R, G, and B sub-pixels. The physical structure of the sub-pixels can be light-emitting units. Adjacent sub-pixels with different emitted light colors form a pixel (which can be referred to as a pixel unit, a large pixel, etc.). The arrangement density of the pixels in the display area 11 represents the pixel density PPI. It should be noted that in some embodiments of the present disclosure, some of the traces in the border area 12 can be arranged into the display area 11, so that the border area 12 can be designed as a single-sided border. The display area 11 includes a first area 11a and a second area 11b, and the second area 11b can be used for fingerprint recognition.

[0100] The physical structure of the display panel 10 can include a substrate 100, and a display function layer, an isolation structure 300, a shielding structure 300a, and a plurality of light recognition units 200a located on the substrate 100. The display function layer includes a plurality of light-emitting units 200.

[0101] The display functional layer includes light-emitting units 200 located in the display area 11. The light-emitting units 200 are arranged in both the first area 11a and the second area 11b. The optical recognition unit 200a is located in the second area 11b to receive the optical signal reflected by the fingerprint, so as to perform fingerprint recognition. The isolation structure 300 is located in the first area 11a and defines a plurality of isolation openings 301. That is, the planar shape of the isolation structure 300 presents a grid pattern, and the isolation openings 301 are the meshes of the grid pattern. The isolation openings 301 limit the light-emitting units 200. The shielding structure 300a is located in the second area 11b and between the optical recognition unit 200a and the light-emitting units 200. At least part of the shielding structure 300a and at least part of the isolation structure 300 are on the same layer and made of the same material. In this way, at least part of the shielding structure 300a can be prepared simultaneously while preparing the isolation structure 300, thereby reducing the manufacturing cost of the display panel.

[0102] In at least one embodiment of the present disclosure, as Figure 3A shown, the orthographic projection of the end of the isolation structure 300 facing the substrate 100 on the substrate 100 is located within the orthographic projection of the end of the isolation structure 300 facing away from the substrate 100 on the substrate 100. In this way, the isolation structure 300 is generally wider at the top and narrower at the bottom, so that during the preparation process of the light-emitting units 200, the evaporation range of the relevant evaporation coating layer can be limited to ensure the electrical performance of the light-emitting units 200 (such as the connection of the following second electrode 230), while achieving the isolation effect on some layers in the light-emitting units 200 (such as the following light-emitting functional layer 220). For example, the shielding structure 300a can also be set to be generally wider at the top and narrower at the bottom, that is, the orthographic projection of the end of the shielding structure 300a facing the substrate 100 on the substrate 100 is located within the orthographic projection of the end of the shielding structure 300a facing away from the substrate 100 on the substrate 100. In this way, the optical recognition unit 200a can be prepared by the process of preparing the light-emitting units 200.

[0103] In at least one embodiment of the present disclosure, as Figure 3A and Figure 3BAs shown, the end of the isolation structure 300 facing the substrate 100 includes a first conductive portion (such as the first support portion mentioned in the following embodiments), the end of the shielding structure 300a facing the substrate 100 includes a second conductive portion (such as the second support portion mentioned in the following embodiments), the light-emitting unit 200 includes a first electrode 210, a light-emitting functional layer 220, and a second electrode 230 stacked in sequence on the substrate 100. In the first region 11a, the second electrode 230 is connected to the first conductive portion, and in the second region 11b, the second electrode 230 is connected to the second conductive portion. The light recognition unit 200a includes a third electrode 210a, a recognition functional layer 220a, and a fourth electrode 230a stacked in sequence on the substrate 100. In the second region 11b, the fourth electrode 230a is connected to the second conductive portion. In this way, while the isolation structure 300 and the shielding structure 300a separate the light-emitting unit 200 and the light recognition unit 200a, the first conductive portion and the second conductive portion can ensure the continuity of the electrical connection of the second electrode 230 and the fourth electrode 230a, so as to eliminate the influence on the electrical functions of the second electrode 230 and the fourth electrode 230a due to the setting of the isolation structure 300 and the shielding structure 300a.

[0104] For example, during the evaporation process of the light-emitting functional layer 220 and the second electrode 230, by controlling the evaporation angle of each film layer, under the blocking action of the isolation structure 300, while ensuring that the edge of the second electrode 230 can be connected to the first conductive portion of the isolation structure 300, it is possible to avoid the light-emitting functional layer 220 or some of its film layers (such as the film layer including the hole material) from contacting the isolation structure 300. Thus, while blocking the light-emitting functional layer 220 or some of its film layers (including electrical blocking, the light-emitting functional layers 220 or some of their film layers of adjacent light-emitting units 200 will not be directly or indirectly electrically connected), it is ensured that the second electrode 230 can be connected to the first conductive portion of the isolation structure 300 to still form a common electrode (or called a common cathode) or be connected to other related circuits (such as a common electrode line or a pixel driving circuit, etc.).

[0105] For example, the light-emitting functional layer 220 may further include a first functional layer 221, a light-emitting layer 222, and a second functional layer 223, which are sequentially stacked on the first electrode 210. The first functional layer 221 may include a hole injection layer, a hole transport layer, an electron blocking layer, etc. The second functional layer 223 may include an electron injection layer, an electron transport layer, a hole blocking layer, etc. It should be noted that since carriers (holes, electrons) mainly crosstalk between adjacent light-emitting units 200 through the first functional layer 221, the isolation structure 300 needs to be arranged such that the first functional layers 221 of the respective light-emitting units 200 are electrically disconnected from each other. Since the isolation structure 300 has an upper-wide and lower-narrow shape, the first functional layer 221 will be disconnected at the edge of the crown portion 320 during the evaporation process, that is, the first functional layer 221 will not be connected to the conductive part (such as the support portion 310) of the isolation structure 300 to cause crosstalk between adjacent light-emitting units 200. Similarly, by controlling the evaporation angle of the identification functional layer 220a and the fourth electrode 230a, the fourth electrode 230a can be connected to the second conductive part of the shielding structure 300a while preventing the identification functional layer 220a from being connected to the second conductive part of the shielding structure 300a, thereby avoiding the leakage current of the light identification unit 200a being affected by the surrounding light-emitting units 200.

[0106] For example, in at least one embodiment of the present disclosure, the first conductive part and the second conductive part are on the same layer and made of the same material. In this way, the manufacturing process flow of the display panel increased due to the arrangement of the shielding structure 300a can be further reduced, so as to further reduce the manufacturing cost of the display panel.

[0107] For example, in at least one embodiment of the present disclosure, as Figure 3A and Figure 3B shown, the second electrode 230 and the fourth electrode 230a are on the same layer and made of the same material. In this way, the manufacturing process flow of the display panel increased due to the arrangement of the light identification unit 200a can be reduced, so as to further reduce the manufacturing cost of the display panel.

[0108] For example, in at least one embodiment of the present disclosure, as Figure 3A and Figure 3B shown, the first electrode 210 and the third electrode 210a are on the same layer and made of the same material. In this way, the manufacturing process flow of the display panel increased due to the arrangement of the light identification unit 200a can be further reduced, so as to further reduce the manufacturing cost of the display panel. For example, the first electrode 210 may be set as an anode, and the second electrode 230 may be set as a cathode. The first electrode 210 may be set as a reflective electrode. In this way, the third electrode 230a can have a light-reflecting characteristic, thereby increasing the absorption rate of the identification functional layer 220a for the optical signal (the light reflected by the fingerprint), so as to increase the accuracy and sensitivity of fingerprint identification.

[0109] In the embodiments of the present disclosure, without further limitation on the specific structure of the isolation structure while ensuring that the isolation structure is wider at the top and narrower at the bottom. Below, several setting methods of the isolation structure will be described in different embodiments.

[0110] In some embodiments of the present disclosure, as Figure 3A and Figure 3B shown, the isolation structure 300 includes a first support portion 310 and a first crown portion 320. The first support portion 310 is located between the first crown portion 320 and the substrate 100. The orthographic projection of the first support portion 310 on the substrate 100 is located within the orthographic projection of the first crown portion 320 on the substrate 100. The shielding structure 300a includes a second support portion 310a and a second crown portion 320a. The second support portion 310a is located between the second crown portion 320a and the substrate 100, and the orthographic projection of the second support portion 310a on the substrate 100 is located within the orthographic projection of the second crown portion 320a on the substrate 100.

[0111] For example, the first support portion 310 and the second support portion 310a are on the same layer and made of the same material; and / or, the first crown portion 320 and the second crown portion 320a are on the same layer and made of the same material. Optionally, the first support portion 310 is a first conductive part, and the second support portion 310a is a second conductive part.

[0112] For example, in the display panel as Figure 3A and Figure 3B shown, the first support portion 310 is formed of a conductive material such as metal. On this basis, the first crown portion 320 can be formed of a conductive material such as metal, or the first crown portion 320 can be formed of an insulating material. It should be noted that when the first crown portion 320 is formed of a conductive material, the impedance of the structure formed by the second electrode 230 and the isolation structure 300 can be reduced; or, when the first crown portion 320 is formed of an insulating material, the bonding strength between the first encapsulation layer 410 and the first crown portion 320 (for example, the surface of the first crown portion 320 facing the substrate 100) can be increased to improve the film forming quality of the first encapsulation layer 510 (for example, the encapsulation unit 511 included therein), thereby improving the yield of the display panel.

[0113] For example, as Figure 3A and Figure 3BAs shown, in a cross-section perpendicular to the substrate 100, the cross-sectional shape of the portion of the first support portion 310 located between adjacent isolation openings 301 is a regular trapezoid. The first support portion 310 is provided as a conductive structure, and the second electrode 230 is connected to the side wall of the first support portion 310. In this way, the requirement for the width difference between the first crown portion 320 and the first support portion 310 can be reduced, so as to reduce the design width of the portion of the isolation structure 300 between two isolation openings, thereby improving the pixel density PPI of the display panel. Correspondingly, in the case where the isolation structure 300 and the shielding structure 300a are prepared on the same layer, in a cross-section perpendicular to the substrate 100, the cross-sectional shape of the second support portion 310a is a regular trapezoid. The second support portion 310a is provided as a conductive structure, and the fourth electrode 230a is connected to the side wall of the second support portion 310a.

[0114] In some other embodiments of the present disclosure, as Figure 4A and Figure 4B shown, the first support portion 310 may further include a first sub-support layer 311 and a second sub-support layer 312. The second sub-support layer 312 is located between the first sub-support layer 311 and the first crown portion 320. The orthographic projection of the second sub-support layer 312 on the substrate 100 is located within the orthographic projection of the first sub-support layer 311 on the substrate 100; the second support portion 310a may further include a third sub-support layer 311a and a fourth sub-support layer 312a. The third sub-support layer 311a is located between the fourth sub-support layer 312a and the substrate 100. The fourth sub-support layer 312a is located between the third sub-support layer 311a and the second crown portion 320a. The orthographic projection of the fourth sub-support layer 312a on the substrate 100 is located within the orthographic projection of the third sub-support layer 311a on the substrate 100. In this way, the portion of the surface of the first sub-support layer 311 facing away from the substrate 100 that is not covered by the second sub-support layer 312 can be used to contact the second electrode 230, and it can be ensured that the second electrode 230 has a relatively large deposition thickness on the first sub-support layer 311, so as to reduce the impedance at the connection between the second electrode 230 and the first support portion 310; correspondingly, the portion of the surface of the third sub-support layer 311a facing away from the substrate 100 that is not covered by the fourth sub-support layer 312a can be used to contact the fourth electrode 230a, and it can be ensured that the fourth electrode 230a has a relatively large deposition thickness on the third sub-support layer 311a, so as to reduce the impedance at the connection between the fourth electrode 230a and the third sub-support layer 311a.

[0115] For example, the materials of the first sub-support layer 311, the second sub-support layer 312, and the first crown portion 320 are all different. For example, the first sub-support layer 311, the second sub-support layer 312, and the first crown portion 320 may be molybdenum, aluminum, and titanium respectively. The corrosion resistance of aluminum, molybdenum, and titanium increases in turn. During etching, the film layer formed by the rewritten material can form as Figure 4A andFigure 4B The isolation structure 300 shown. Correspondingly, the materials of the third sub-support layer 311a, the fourth sub-support layer 312a, and the second crown portion 320a are all different. For example, the third sub-support layer 311a, the fourth sub-support layer 312a, and the second crown portion 320a can be molybdenum, aluminum, and titanium respectively. The corrosion resistance of aluminum, molybdenum, and titanium increases in turn. During etching, the film layer formed by rewriting the material can form as Figure 4A and Figure 4B the shielding structure 300a shown.

[0116] In an embodiment of the present disclosure, the isolation structure is used to connect the second electrode. To avoid the connection between the isolation structure and the first electrode, the size of the first electrode can be reduced to be spaced from the isolation structure, or an insulating layer can be provided between the first electrode and the isolation structure.

[0117] In at least one embodiment of the present disclosure, the display panel may further include a pixel defining layer 330. The pixel defining layer 330 is located between the isolation structure 300 and the substrate 100, and between the shielding structure 300a and the substrate 100. The pixel defining layer 330 defines a plurality of pixel openings 302. The pixel openings 302 limit the light-emitting unit 200 or the light recognition unit 200a. That is, both the light-emitting unit 200 and the light recognition unit 200a are limited by different pixel openings 302. The pixel opening 302 and the isolation opening 301 that limit the same light-emitting unit 200 communicate with each other. For example, the orthographic projection of the pixel opening 302 on the substrate 100 is located within the orthographic projection of the corresponding isolation opening 301 on the substrate 100. The light-emitting functional layer 220 and the second electrode 230 fill the pixel opening 302 and extend to the surface of the pixel defining layer 330 facing away from the substrate 100.

[0118] In at least one embodiment of the present disclosure, the pixel defining layer 330 is an inorganic layer. The inorganic layer has high density and strong resistance ability, thereby reducing the design thickness of the display panel; in addition, the pixel defining layer 330 with a smaller thickness is beneficial to the continuity of the second electrode 230 and the fourth electrode 230a. For example, the light-emitting functional layer 220 and the second electrode 230 of the light-emitting unit 200 can be formed by evaporation based on the isolation structure 300, and the isolation structure 300 can limit the light-emitting functional layer 220 and the second electrode 230. Therefore, the pixel defining layer 330 does not need to have too large a thickness to accommodate the light-emitting functional layer 220, that is, the pixel defining layer 330 does not need to be prepared from an organic material with a large film thickness; in addition, when the pixel defining layer 330 is an inorganic layer, it can have a smaller thickness, thereby reducing the step difference at the edge of the pixel opening 302, improving the film layer continuity of the second electrode 230 at this position, and reducing the impedance of the second electrode 230.

[0119] In at least one embodiment of the present disclosure, the pixel defining layer 330 covers the edges of the first electrode 210 and the third electrode 210a. In this way, the pixel defining layer 330 can enable the first electrode 210 and the third electrode 210a to have a larger design area, so as to increase the light-emitting area of the light-emitting unit 200 and the area of the portion of the optical recognition unit 200a for recognizing optical signals. For example, when the pixel defining layer 330 is provided in the display panel, the first electrode 210 of the light-emitting unit 200 can be designed to have a larger area, so as to avoid the position deviation (error caused by process accuracy) between the first electrode 210 and the isolation structure 300 in the actual process and make it difficult to ensure the actual light-emitting area of the light-emitting unit, thereby improving the aperture ratio (related to the light-emitting area of the light-emitting unit) and brightness of the displayed image of the display panel. For example, when the pixel defining layer 330 is not provided, in order to avoid the connection between the first electrode 210 and the isolation structure 300, the design area of the first electrode 210 is limited. If the position of the first electrode 210 is deviated, it may cause the light-emitting area of the light-emitting unit to be smaller than the designed area, resulting in a decrease in the brightness of the light-emitting unit.

[0120] It should be noted that in the embodiments of the present disclosure, on the premise of ensuring that the shielding structure blocks interfering light, the pixel arrangement manner in the display panel and the specific arrangement positions of the shielding structure in different arrangement manners are not further limited and can be designed according to the requirements of the actual process. Hereinafter, this will be described in combination with different embodiments.

[0121] In at least one embodiment of the present disclosure, referring back to Figure 2 , the light-emitting unit 200 is at least divided into a first light-emitting unit R, a second light-emitting unit G, and a third light-emitting unit B with different light-emitting colors. A shielding structure 300a is provided between the first light-emitting unit R and the optical recognition unit O and between the third light-emitting unit B and the optical recognition unit O.

[0122] Optionally, the wavelengths of the emitted light rays of the first light-emitting unit R, the second light-emitting unit G, and the third light-emitting unit B decrease in sequence. For example, the first light-emitting unit R, the second light-emitting unit G, and the third light-emitting unit B emit red light, green light, and blue light in sequence.

[0123] In some embodiments of the present disclosure, the display panel includes a plurality of pixels (which can be referred to as large pixels). Each pixel includes at least one first light-emitting unit R, at least one second light-emitting unit G, and at least one third light-emitting unit B. The first light-emitting unit R, the second light-emitting unit G, and the third light-emitting unit B all represent a sub-pixel (which can be referred to as a sub-pixel). The sub-pixels or pixels are repeatedly arranged in the display area of the display panel, so as to be arranged into a plurality of pixel repeating units.

[0124] For example, in the second region 11b, at least one pixel repeating unit further includes at least one optical recognition unit O. In this way, one type of light-emitting unit 200 in the pixel repeating unit, such as the second light-emitting unit G, can be used not only for displaying an image but also for recognition (emitting an optical signal for recognition), so as to simplify the structure of the display panel and increase the pixel density PPI of the display panel.

[0125] It should be noted that in the second region 11b, the optical recognition unit O may be provided in some of the pixel repeating units, or may be provided in each pixel repeating unit. Specifically, it can be designed according to the functional requirements of the actual product, and no limitation is made here.

[0126] In at least one embodiment of the present disclosure, as Figure 5 and Figure 6 shown, the shielding structure 300a includes a plurality of shielding units. The shielding units are in the shape of line segments and are arranged between the first light-emitting unit R and the optical recognition unit O and between the third light-emitting unit B and the optical recognition unit O. In this way, while the light emitted by the second light-emitting unit G can be reflected and then enter the optical recognition unit O, the light reflected after being emitted by the first light-emitting unit R and the third light-emitting unit B can be shielded, thereby preventing the light emitted by the first light-emitting unit R and the third light-emitting unit B from interfering with the optical recognition unit O.

[0127] In at least one embodiment of the present disclosure, the distance between the second light-emitting unit and the optical recognition unit can be reduced. Specifically, as Figure 6 shown, the distance L1 from the centroid of the second light-emitting unit G to the centroid of the adjacent optical recognition unit O is less than the distance L2 from the centroid of any one of the first light-emitting unit R and the third light-emitting unit B to the centroid of the adjacent optical recognition unit O. In this way, by controlling the distance difference between each light-emitting unit 200 and the optical recognition unit O, more light emitted by the second light-emitting unit G can enter (enter after reflection) the optical recognition unit O, while less light emitted by the first light-emitting unit R and the third light-emitting unit B can enter (enter after reflection) the optical recognition unit O.

[0128] For example, in the case of reducing the distance between the second light-emitting unit and the optical recognition unit, as Figure 6 shown, the shielding structure 300a includes a plurality of shielding units. The shielding units are in the shape of line segments and are arranged between the first light-emitting unit R and the optical recognition unit O and between the third light-emitting unit B and the optical recognition unit O.

[0129] For example, in one example, under the design regarding the above-mentioned centroid (reducing the distance between the second light-emitting unit G and the optical recognition unit O), as Figure 5 and Figure 6As shown, the area between the adjacent second light-emitting unit G and the light recognition unit O is located outside the area where the shielding unit is located, that is, no shielding unit is provided between the second light-emitting unit G and the light recognition unit O. In this way, the light flux emitted from the second light-emitting unit G and incident on the light recognition unit O can be further increased to improve the accuracy of light recognition.

[0130] For example, in another example, under the design regarding the above-mentioned centroid (reducing the distance between the second light-emitting unit G and the light recognition unit O), as Figure 7 shown, a shielding unit is arranged between the second light-emitting unit G and the light recognition unit O. In this way, the shielding unit can be used to prepare (equivalent to an isolation structure) the adjacent second light-emitting unit G and the light recognition unit O.

[0131] For example, in the case of reducing the distance between the second light-emitting unit and the light recognition unit, the shielding structure 300a includes a plurality of shielding units. The shielding units are annular and surround the light recognition unit O. For the shape of the annular shielding unit, refer to Figure 2 .

[0132] For example, in the case of reducing the distance between the second light-emitting unit and the light recognition unit, the shielding structure 300a can be set in a grid shape to have a plurality of first openings and a plurality of second openings. The first openings limit the light-emitting unit 200, and the second openings limit the light recognition unit O. The shape of the grid-shaped shielding structure 300a can be as Figure 7 shown. Further optionally, the shielding structure 300a and the isolation structure 300 are connected to each other and integrally formed, that is, in the second region 11b, the light-emitting unit is also limited by the isolation structure 300.

[0133] For example, in the case of reducing the distance between the second light-emitting unit and the light recognition unit, the first light-emitting unit R, the second light-emitting unit G, and the third light-emitting unit B are strip-shaped, and the length directions of the first light-emitting unit R and the third light-emitting unit B point to the adjacent light recognition unit O, and the width direction of the second light-emitting unit G points to the adjacent light recognition unit O, as specifically shown in Figure 8 shown. In this way, compared with the first light-emitting unit R and the third light-emitting unit B, more light rays emitted from the second light-emitting unit G will be incident on the light recognition unit O, which is equivalent to reducing the proportion of interfering light rays, thereby improving the recognition effect of the light recognition unit.

[0134] In the embodiments of the present disclosure, the "length direction" of the light-emitting unit can be the direction determined by the two opposite sides with the largest distance, that is, the direction from one side (for example, its center) to the other opposite side (for example, its center). Correspondingly, the "width direction" is perpendicular to the "length direction".

[0135] In some other embodiments of the present disclosure, the display panel includes a plurality of pixel repeating units. In the second region 11b, at least one pixel repeating unit includes at least one first light-emitting unit R, at least two second light-emitting units, at least one third light-emitting unit B, and at least one light recognition unit O. And in the pixel repeating unit including the light recognition unit O in the second region 11b, at least one second light-emitting unit is a second type of light-emitting unit G2, and at least another second light-emitting unit is a first type of light-emitting unit G1. The pixel repeating unit may include at least one pixel P, specifically as Figure 9 shown. In this way, the first type of light-emitting unit G1 (one second light-emitting unit) in the pixel repeating unit can be used for displaying images, and the second type of light-emitting unit G2 (the other second light-emitting unit) is used for recognition (emitting an optical signal for recognition), thereby reducing the aging rate of the light-emitting units 200 in the pixel repeating unit and increasing the lifespan of the display panel. It should be noted that after removing the light recognition unit O in the pixel repeating unit in the second region 11b, the remaining part can be used as the pixel repeating unit in the first region 11a. Or, the pixel repeating unit in the first region 11a can be set separately. For example, it may not need to be provided with two second light-emitting units. That is, in the first region 11a, the pixel repeating unit may include at least one first light-emitting unit, at least one second light-emitting unit, and at least one third light-emitting unit.

[0136] It should be noted that in the above solution, the second type of light-emitting unit G2 can also be used for auxiliary light emission for display in the non-recognition mode. For example, when the display panel is in the recognition state, the first light-emitting unit, the second light-emitting unit, the third light-emitting unit, and the light recognition unit are turned on; and / or when the display panel is in the non-recognition state (display state), the light recognition unit is turned off, and the second type of light-emitting unit is turned off, or the light output brightness of the second type of light-emitting unit is less than the light output brightness of the first type of light-emitting unit. In this way, regardless of whether the display panel is in the recognition state, the display panel will maintain the display function.

[0137] In some other embodiments of the present disclosure, when the pixel repeating unit includes the second type of light-emitting unit G2, as Figure 9 and Figure 10 shown, the shielding structure 300a may include a plurality of shielding units. The shielding units are in the shape of line segments and are arranged between the first light-emitting unit R and the light recognition unit O and between the third light-emitting unit B and the light recognition unit O.

[0138] For example, in one example, under the design that the above shielding unit is in the shape of a line segment, as Figure 9 and Figure 10As shown, a shielding unit is arranged between the first type of light-emitting unit G1 and the light recognition unit O. In this way, the shielding unit can be used to prepare (equivalent to an isolation structure) adjacent first type of light-emitting unit G1 and light recognition unit O.

[0139] For example, in another example, under the design where the above-mentioned shielding unit is in the shape of a line segment, it can be modified Figure 9 and Figure 10 the structure shown, where the shielding unit between the first type of light-emitting unit G1 and the light recognition unit O is removed. In this way, the area between adjacent first type of light-emitting unit G1 and light recognition unit O is outside the area where the shielding unit is located, that is, no shielding unit is provided between the first type of light-emitting unit G1 and the light recognition unit O. In this way, the light emitted by the first type of light-emitting unit G1 can be used for optical signal recognition to improve the accuracy of optical recognition.

[0140] For example, in the case where the pixel repeating unit includes the second type of light-emitting unit G2, the distance from the centroid of the second type of light-emitting unit G2 to the centroid of the adjacent light recognition unit O is less than the distance from the centroid of any one of the first light-emitting unit R, the first type of light-emitting unit G1, and the third light-emitting unit B to the centroid of the adjacent light recognition unit O. In this way, by controlling the distance difference between each light-emitting unit 200 and the light recognition unit O, more light emitted by the second type of light-emitting unit G2 can be incident (incident after reflection) into the light recognition unit O, while less light emitted by other light-emitting units 200 can be incident (incident after reflection) into the light recognition unit O.

[0141] For example, in at least one embodiment of the present disclosure, in the case where the pixel repeating unit includes the second type of light-emitting unit G2, as Figure 9 shown, the shielding structure 300a includes a plurality of shielding units. The shielding units are in the shape of line segments and are arranged between the first light-emitting unit R and the light recognition unit O, between the first type of light-emitting unit G1 and the light recognition unit O, and between the third light-emitting unit B and the light recognition unit O.

[0142] For example, in one example, under the design of the above-mentioned centroid (reducing the distance between the second type of light-emitting unit G2 and the light recognition unit O) and the shielding unit being in the shape of a line segment, as Figure 9 and Figure 10 shown, a shielding unit is arranged between the first type of light-emitting unit G1 and the light recognition unit O. In this way, the shielding unit can be used to prepare (equivalent to an isolation structure) adjacent first type of light-emitting unit G1 and light recognition unit O.

[0143] For example, in another example, under the design of the above-mentioned centroid (reducing the distance between the second type of light-emitting unit G2 and the light recognition unit O) and the shielding unit being in the shape of a line segment, it can be modified Figure 9 and Figure 10The structure shown, in which the shielding unit between the first type of light-emitting unit G1 and the light recognition unit O is removed. In this way, the area between the adjacent first type of light-emitting unit G1 and the light recognition unit O is located outside the area where the shielding unit is located, that is, no shielding unit is provided between the first type of light-emitting unit G1 and the light recognition unit O. In this way, the light emitted by the first type of light-emitting unit G1 can be used for optical signal recognition to improve the accuracy of optical recognition.

[0144] For example, in at least one embodiment of the present disclosure, when the pixel repeating unit includes the second type of light-emitting unit G2, as Figure 11 shown, the shielding structure 300a includes a plurality of shielding units, the shielding units are annular, and surround the light recognition unit O.

[0145] For example, in at least one embodiment of the present disclosure, when the pixel repeating unit includes the second type of light-emitting unit G2, the shielding structure 300a is in a grid shape to have a plurality of first openings and a plurality of second openings. The first openings limit the light-emitting unit 200, and the second openings limit the light recognition unit 200a. For example, further, the shielding structure 300a and the isolation structure 300 are connected to each other and integrally formed, that is, in the second region 11b, the light-emitting unit is also limited by the isolation structure 300.

[0146] For example, in at least one embodiment of the present disclosure, as Figures 9 to 11 shown, in the pixel repeating unit Q, the number ratio of the first light-emitting unit R, the second light-emitting units (G1, G2), the third light-emitting unit B, and the light recognition unit O is 1:4:1:2, where the arrangement manners of the first light-emitting unit R, the second light-emitting units (G1, G2), the third light-emitting unit B, and the light recognition unit O can be designed according to actual needs and are not limited herein.

[0147] In at least one embodiment of the present disclosure, as Figure 9 and Figure 10 shown, by adjusting the arrangement manners of the sub-pixels and the light recognition unit in each pixel repeating unit Q and the arrangement manner of the pixel repeating unit Q, the light recognition unit can be located between two second light-emitting units, thereby increasing the light flux emitted from the second light-emitting unit and entering the light recognition unit. Without considering the light recognition unit, these "two second light-emitting units" are adjacent to each other.

[0148] For example, in some embodiments of the present disclosure, as Figure 9As shown, the first light-emitting unit R, the first type of light-emitting unit G1, the second type of light-emitting unit G2, the third light-emitting unit B, and the light recognition unit O are arranged in multiple rows and columns. The first light-emitting unit R and the third light-emitting unit B are arranged in different columns, and the light recognition unit O is arranged in both the column corresponding to the first light-emitting unit R and the column corresponding to the third light-emitting unit B. The first type of light-emitting unit G1 and the second type of light-emitting unit G2 are arranged in the same column, and the column where the first type of light-emitting unit G1 is arranged is located between the column where the first light-emitting unit R is arranged and the column where the third light-emitting unit B is arranged. The first light-emitting unit R, the third light-emitting unit B, and the second type of light-emitting unit G2 are arranged in the same row, the first type of light-emitting unit G1 and the light recognition unit O are arranged in the same row, and the rows where the second type of light-emitting unit G2 is arranged and the rows where the first type of light-emitting unit G1 is arranged are arranged alternately. In this pixel arrangement, the light recognition unit O is adjacent to two second type of light-emitting units G2 and is located between the two second type of light-emitting units G2. The two second type of light-emitting units G2 are respectively located in different pixel repeating units Q. Thus, as can be seen from the attached drawings, each light recognition unit O will be surrounded by four second type of light-emitting units G2, thereby increasing the intensity (light brightness) of the light signal received by the light recognition unit O from the second type of light-emitting units G2, so as to improve the recognition accuracy. Correspondingly, it is also equivalent to reducing the influence of other interfering light on the light recognition unit O. It should be noted that in this pixel arrangement, for each pixel repeating unit Q, for a light recognition unit O and the four second type of light-emitting units G2 surrounding it, there are two sets of relatively second type of light-emitting units G2. For any set of second type of light-emitting units G2, one of them and the light recognition unit O are located in the same pixel repeating unit Q, and the other one and the light recognition unit O are located in different pixel repeating units Q; for another light recognition unit O and the four second type of light-emitting units G2 surrounding it, two relatively second type of light-emitting units G2 and the light recognition unit O are all located in different pixel repeating units Q. For example, for each pixel repeating unit Q, one of the light recognition units O is located between two first type of light-emitting units G1. The two first type of light-emitting units G1 and the light recognition unit O between them are located in the same pixel repeating unit Q. Another light recognition unit O is also located between two first type of light-emitting units G1, but the two first type of light-emitting units G1 are respectively located in different pixel repeating units Q, and one of the first type of light-emitting units G1 and the light recognition unit O are located in the same pixel repeating unit Q.

[0149] For example, in some other embodiments of the present disclosure, such as Figure 10 and Figure 11As shown, the light-emitting units emitting different-color light are arranged alternately with each other to avoid the color edge phenomenon caused by the light-emitting units emitting the same-color light being arranged in the same row or column. For example, the first light-emitting unit R, the first type of light-emitting unit G1, the second type of light-emitting unit G2, the third light-emitting unit B, and the light recognition unit O are arranged in multiple rows and columns. The first light-emitting unit R, the third light-emitting unit B, and the light recognition unit O are arranged in the same column, the first type of light-emitting unit G1 and the second type of light-emitting unit G2 are arranged in the same column, and the column in which the first light-emitting unit R is arranged and the column in which the first type of light-emitting unit G1 is arranged are arranged alternately. The first light-emitting unit R, the third light-emitting unit B, and the second type of light-emitting unit G2 are arranged in the same row, the first type of light-emitting unit G1 and the light recognition unit O are arranged in the same row, and the row in which the first type of light-emitting unit G1 is arranged and the row in which the second type of light-emitting unit G2 is arranged are arranged alternately. In addition, in this pixel arrangement, the light recognition unit O is adjacent to and located between two second type of light-emitting units G2, and the two second type of light-emitting units G2 are respectively located in different pixel repeating units Q. In this way, as can be seen from the attached drawings, each light recognition unit O will be surrounded by four second type of light-emitting units G2, so as to improve the intensity (light brightness) of the light signal received by the light recognition unit O from the second type of light-emitting units G2, so as to improve the recognition accuracy. Correspondingly, it is also equivalent to reducing the influence of other interfering light on the light recognition unit O. It should be noted that in this pixel arrangement, for each pixel repeating unit Q, for one light recognition unit O and the four second type of light-emitting units G2 surrounding it, there are two groups of second type of light-emitting units G2 that are respectively opposite. For any group of second type of light-emitting units G2, one of them and the light recognition unit O are located in the same pixel repeating unit Q, and the other of them and the light recognition unit O are located in different pixel repeating units Q; for another light recognition unit O and the four second type of light-emitting units G2 surrounding it, two opposite second type of light-emitting units G2 and the light recognition unit O are all located in different pixel repeating units Q. For example, for each pixel repeating unit Q, one of the light recognition units O is located between two first type of light-emitting units G1. The two first type of light-emitting units G1 and the light recognition unit O between them are located in the same pixel repeating unit Q. The other light recognition unit O is also located between two first type of light-emitting units G1, but the two first type of light-emitting units G1 are respectively located in different pixel repeating units Q, and one of the first type of light-emitting units G1 and the light recognition unit O are located in the same pixel repeating unit Q.

[0150] It should be noted that in the pixel arrangement as Figure 10 and Figure 11 shown, adjacent pixels P can share the light-emitting units R and B. When the light-emitting unit G2 is used for display, adjacent pixels P can also be set to share the light-emitting unit G2.

[0151] For example, in at least one embodiment of the present disclosure, Figure 12 As shown, the first light-emitting unit R, the first type of light-emitting unit G1, the second type of light-emitting unit G2 and the third light-emitting unit B are in the shape of long strips, and the length direction of the first light-emitting unit R, the first type of light-emitting unit G1 and the third light-emitting unit B points to the adjacent light recognition unit O, and the width direction of the second type of light-emitting unit G2 points to the adjacent light recognition unit O. In this way, compared with the first light-emitting unit R, the first type of light-emitting unit G1 and the third light-emitting unit B, the light emitted by the second type of light-emitting unit G2 will be more incident on the light recognition unit O, which is equivalent to reducing the proportion of interfering light, thereby improving the recognition effect of the light recognition unit.

[0152] In at least one embodiment of the present disclosure, Figure 13A and Figure 13B As shown, the display panel may further include a first encapsulation layer 510, which is located on the side of the display function layer away from the substrate 100 and covers the light-emitting unit 200 and the light recognition unit 200a. Optionally, the first encapsulation layer 510 includes a plurality of encapsulation units 511 spaced apart from each other, and at least some of the encapsulation units 511 correspond to the isolation openings 301 to cover the light-emitting unit 200 confined in the isolation openings 301. The light-emitting unit 200 and the light recognition unit 200a are prepared in batches, and during the preparation of each batch, the encapsulation unit 511 can protect the prepared light-emitting unit 200 and / or the light recognition unit 200a. Accordingly, during these preparation processes, the first encapsulation layer 510 will be formed into a plurality of encapsulation units 511 spaced apart from each other.

[0153] It should be noted that the light-emitting units 200 and the light identification units 200a with different emitting lights are independently manufactured, but the film layers (evaporated film layers such as light-emitting functional layers, etc.) in each light-emitting unit 200 and light identification unit 200a are evaporated on the entire surface of the display panel during evaporation. For example, the light-emitting unit 200 is classified into light-emitting units that emit red light (R), green light (G), and blue light (B), respectively. During the preparation process, the light-emitting units R, G, and B are prepared in sequence. When preparing the light-emitting unit R, a light-emitting unit R is formed in each isolation opening 301. A first encapsulation layer 510 is prepared on the display panel to cover the light-emitting unit R. Then, the first encapsulation layer 510, the second electrode, and the light-emitting functional layer in some isolation openings 301 (used to form light-emitting units G and B in the final product) are removed. In this process, the first encapsulation layer 510 is used to protect the light-emitting units R in other isolation openings 301. Based on this method, the light-emitting units G and B are prepared in sequence, and finally a display panel as shown in FIG. Figure 13A and Figure 13BThe first encapsulation layer 510 shown, that is, the first encapsulation layer 510 on the entire display panel is obtained through multiple process steps, and the first encapsulation layer 510 also forms a plurality of encapsulation units 511 spaced apart from each other.

[0154] It should be noted that in the embodiments of the present disclosure, there is no limitation on the preparation sequence of the three types of light-emitting units R, G (or G1, G2), B and the light recognition unit, and it can be designed according to the actual process requirements. For example, the preparation process can also be implemented based on the sequence of the light-emitting units B, G, R and the light recognition unit.

[0155] In at least one embodiment of the present disclosure, as Figure 13A and Figure 13B shown, the display panel further includes a second encapsulation layer 520 and a third encapsulation layer 530 covering the first encapsulation layer 510. The second encapsulation layer 520 is located between the first encapsulation layer 510 and the third encapsulation layer 530. The first encapsulation layer 510 covers the light recognition unit 200a and the light-emitting unit 200. The third encapsulation layer 530 covers the first encapsulation layer 510 and the second encapsulation layer 520, and the second encapsulation layer 520 is a planarization layer to facilitate the setting of other components on the encapsulation layer. For example, the first encapsulation layer 510 and the third encapsulation layer 530 are inorganic layers, and the second encapsulation layer 520 is an organic layer. In this way, the second encapsulation layer 520 can have a certain flexibility to relieve the stress of the first encapsulation layer 510 and the third encapsulation layer 530, thereby improving the reliability of the display panel and being more conducive to the application of the display panel in the flexible display field; in addition, the first encapsulation layer 510 and the third encapsulation layer 530 have high density and have a high barrier effect on water, oxygen, etc., and the third encapsulation layer 530 has higher strength to facilitate the preparation of other components (such as structures related to touch control functions, optical film layers, etc.) thereon.

[0156] In at least one embodiment of the present disclosure, as Figure 13A and Figure 13B shown, the substrate 100 may include a substrate and a driving circuit layer located on the substrate. The driving circuit layer includes a plurality of pixel driving circuits in the display area, and the display function layer is located on the driving circuit layer. For example, the pixel driving circuit may include a plurality of transistors TFTs, capacitors, etc., and may be formed in various forms such as 2T1C (i.e., 2 transistors (TFTs) and 1 capacitor (C)), 3T1C or 7T1C. The pixel driving circuit is connected to the light-emitting unit 200 to control the on / off state and the light-emitting brightness of the light-emitting unit 200. For example, the circuit for driving the light recognition unit can be prepared on the same layer as the pixel driving circuit.

[0157] The structures of some components in the display panel are briefly described above. Next, as Figure 3A and Figure 3BTaking the display panel shown as an example, an exemplary description of the manufacturing method of the display panel will be given.

[0158] As Figure 14A and Figure 14B shown, a substrate 100 is provided and a first electrode 210 arranged in an array is formed on the substrate 100, and a third electrode 210a is formed in the second region; an insulating material film layer (such as an inorganic material film layer) is deposited on the substrate 100 on which the first electrode 210 is formed; a first support portion 310, a first crown portion 320, a second support portion 310a, and a second crown portion 320a are formed on the display panel; a patterning process is performed on the insulating material film layer to form a pixel defining layer 330 (the planar shape is grid-like), and the pixel defining layer 330 covers the gaps between adjacent first electrodes 210 and the gaps between the first electrode 210 and the third electrode 210a. Thus, the planar shape of the pixel defining layer 330 is grid-like.

[0159] In an embodiment of the present disclosure, the patterning process may be a photolithography patterning process. For example, it may include: coating a photoresist on the structural layer to be patterned, exposing the photoresist using a mask, developing the exposed photoresist to obtain a photoresist pattern, etching the structural layer using the photoresist pattern (optionally wet etching or dry etching), and then optionally removing the photoresist pattern. It should be noted that when the material of the structural layer (such as the following photoresist pattern 600) includes a photoresist, the structural layer can be directly exposed through a mask to form the required pattern.

[0160] As Figure 15A and Figure 15B shown, a light-emitting functional layer 220 and a second electrode 230 (which can also be used to prepare a fourth electrode 230a) are evaporated on the substrate 100 to form a light-emitting unit 200 (assuming a light-emitting unit R that emits red light) in each isolation opening 301 of the isolation structure 300. Moreover, at this stage, a light-emitting unit (assuming a light-emitting unit R that emits red light) will also be formed on the third electrode 210a. Since no mask is used in the evaporation process in this process, the evaporated material will also be deposited on the crown portion 320. It should be noted that in the actual process, the evaporated material will be deposited on the upper surface and side walls (not shown in the figure) of the first crown portion 320 and the second crown portion 320a facing away from the substrate 100; then a first encapsulation film 510a is deposited to cover the light-emitting unit 200, the isolation structure 300, and the shielding structure 200a. For example, the light-emitting layer in the evaporated light-emitting functional layer 220 can emit red light. That is, at this stage, a light-emitting unit 200 that emits red light is formed on each of the first electrode 210 and the third electrode 210a.

[0161] As Figure 16A and Figure 16BAs shown, a photoresist is formed (e.g., coated, etc.) on the substrate 100 on which the first encapsulation film 510a is formed, and then a patterning process is performed on the photoresist to form a photoresist pattern 600, and the photoresist pattern 600 only covers a part of the isolation opening 301 of the isolation structure 300.

[0162] As Figure 17A and Figure 17B shown, the surface of the display panel is etched using the photoresist pattern 600 as a mask to remove the first encapsulation film 510a, the second electrode 230, and the light-emitting functional layer 220 that are not covered by the photoresist pattern 500. The remaining portions of the first encapsulation film 510a respectively form the first encapsulation layer 510 (which includes the encapsulation units 511); then the remaining photoresist pattern 600 is removed.

[0163] Repeat the above process steps to respectively form the light-emitting units 200 that emit green light and the light-emitting units 200 that emit blue light in other isolation openings 301, and form the light recognition unit 200a in the second region, thereby forming the display panel as Figure 3A and Figure 3B shown.

[0164] At least one embodiment of the present disclosure provides a display panel. The display panel includes a display area. The display area includes a second region. In the second region, the display panel includes a plurality of pixel repeating units. The pixel repeating unit includes a first light-emitting unit, at least two second light-emitting units, a third light-emitting unit, and at least one light recognition unit. The light recognition unit and at least some of the second light-emitting units are alternately arranged. At least the second type of light-emitting unit is used as a light signal emitting unit. The pixel arrangement manner in this display panel can increase the light flux emitted from the second type of light-emitting unit and incident on the light recognition unit. For specific details, reference can be made to the relevant descriptions in the foregoing embodiments.

[0165] In at least one embodiment of the present disclosure, the pixel repeating unit includes two light recognition units and four second light-emitting units. In the pixel repeating unit, two of the second light-emitting units are light signal emitting units, and the other two second light-emitting units are non-light signal emitting units. The pixel arrangement manner in this display panel can increase the light flux emitted from the second type of light-emitting unit and incident on the light recognition unit. For specific details, reference can be made to the relevant descriptions of the embodiments shown in Figure 9 and Figure 10 above.

[0166] In at least one embodiment of the present disclosure, the two light recognition units and the two non-light signal emitting units are alternately arranged. The pixel arrangement manner in this display panel can increase the light flux emitted from the second type of light-emitting unit and incident on the light recognition unit. For specific details, reference can be made to the relevant descriptions of the embodiments shown in Figure 9 and Figure 10 above, and details will not be elaborated here.

[0167] In at least one embodiment of the present disclosure, one light recognition unit in the pixel repetition unit is located between two first-type light-emitting units in the pixel repetition unit, and the light recognition units in the pixel repetition unit are arranged between two second-type light-emitting units that are adjacent to each other and are respectively located in two pixel repetition units. For example, optionally, in each pixel repetition unit, one light recognition unit is located between two first-type light-emitting units in the pixel repetition unit where it is located, and the other light recognition unit is arranged between two first-type light-emitting units that are adjacent to each other and are respectively located in two pixel repetition units. The pixel arrangement manner in the above display panel can increase the light flux that exits from the second-type light-emitting unit and enters the light recognition unit. For specific details, reference can be made to the relevant descriptions of the Figure 9 and Figure 10 illustrated embodiments described above, and details will not be elaborated here.

[0168] For example, in a specific example, in at least one embodiment of the present disclosure, in the second region, the first light-emitting unit, the first-type light-emitting unit, the second-type light-emitting unit, the third light-emitting unit, and the light recognition unit are arranged in multiple rows and multiple columns. The first light-emitting unit and the third light-emitting unit are arranged in different columns, and light recognition units are arranged in the columns corresponding to the first light-emitting unit and the third light-emitting unit. The first-type light-emitting unit and the second-type light-emitting unit are arranged in the same column. The column where the first-type light-emitting unit is arranged is located between the column where the first light-emitting unit is arranged and the column where the third light-emitting unit is arranged. The first light-emitting unit, the third light-emitting unit, and the second-type light-emitting unit are arranged in the same row. The first-type light-emitting unit and the light recognition unit are arranged in the same row. The rows where the second-type light-emitting unit is arranged and the rows where the first-type light-emitting unit is arranged are arranged alternately. The pixel arrangement in this display panel can be referred to the relevant descriptions of the Figure 9 illustrated embodiments described above. In addition, the physical structure of this display panel and its further design can be referred to the relevant descriptions in the foregoing embodiments, and details will not be elaborated here.

[0169] For example, in another specific example, in the second region, at least one second light-emitting unit in the pixel repeating unit is a second type of light-emitting unit, and at least one other second light-emitting unit is a first type of light-emitting unit. The first light-emitting unit, the first type of light-emitting unit, the second type of light-emitting unit, the third light-emitting unit, and the light recognition unit are arranged in multiple rows and multiple columns. The first light-emitting unit, the third light-emitting unit, and the light recognition unit are arranged in the same column. The first type of light-emitting unit and the second type of light-emitting unit are arranged in the same column. The column in which the first light-emitting unit is arranged and the column in which the first type of light-emitting unit is arranged are alternately arranged. The first light-emitting unit, the third light-emitting unit, and the second type of light-emitting unit are arranged in the same row. The first type of light-emitting unit and the light recognition unit are arranged in the same row. The row in which the first type of light-emitting unit is arranged and the row in which the second type of light-emitting unit is arranged are alternately arranged. For the pixel arrangement in this display panel, reference can be made to the relevant description of the Figure 10 illustrated embodiment described above. In addition, for the physical structure of this display panel and its further design, reference can be made to the relevant description in the foregoing embodiments, which will not be elaborated here.

[0170] In at least one embodiment of the present disclosure, when the display panel is in the recognition state, the first light-emitting unit, the second light-emitting unit, the third light-emitting unit, and the light recognition unit are turned on; and / or, when the display panel is in the non-recognition state, the light recognition unit is turned off, and the second type of light-emitting unit is turned off, or the light recognition unit is turned off, and the light output brightness of the second type of light-emitting unit is less than the light output brightness of the first type of light-emitting unit. The pixel arrangement method in this display panel can increase the light flux emitted from the second type of light-emitting unit and incident on the light recognition unit. Specifically, reference can be made to the relevant description of the Figure 9 and Figure 10 illustrated embodiment described above, which will not be elaborated here.

[0171] In the above display panel, for the further design of the light-emitting unit and other structures in the display panel, reference can be made to the relevant description in the foregoing embodiments, which will not be elaborated here.

[0172] At least one embodiment of the present disclosure provides a display device, which may include the display panel in the above embodiment. For example, the display device may include structures such as a touch control structure, optical films (such as microlenses, polarizers), and a cover plate disposed on the light output side of the display panel

[0173] For example, the display device may be any product or component with a display function such as a television, a digital camera, a mobile phone, a watch, a tablet computer, a laptop computer, a navigator, etc.

[0174] The above are only the preferred embodiments of this specification and are not intended to limit this specification. Any modifications, equivalent replacements, etc. made within the spirit and principles of this specification shall be included within the protection scope of this specification.

Claims

1. A display panel, characterized in that, The display panel includes a display area, wherein the display area includes a first area and a second area, wherein the display panel includes: substrate; A display function layer, located on the substrate and comprising a light-emitting unit located in the display area; a plurality of light recognition units, located on the substrate and in the second area; An isolation structure, located in the first region and on the substrate, wherein the isolation structure defines a plurality of isolation openings, and the isolation openings limit the light-emitting unit; A shielding structure is located in the second region and on the substrate, and between the light identification unit and the light-emitting unit, wherein at least a portion of the shielding structure is in the same layer and made of the same material as at least a portion of the isolation structure.

2. The display panel according to claim 1, characterized in that: The orthographic projection of the end of the isolation structure facing the substrate on the substrate is located within the orthographic projection of the end of the isolation structure facing away from the substrate on the substrate; Preferably, an orthographic projection of an end portion of the shielding structure facing the substrate on the substrate is located within an orthographic projection of an end portion of the shielding structure facing away from the substrate on the substrate.

3. The display panel according to claim 1 or 2, characterized in that, The end of the isolation structure facing the substrate includes a first conductive portion, and the end of the shielding structure facing the substrate includes a second conductive portion, The light-emitting unit includes a first electrode, a light-emitting functional layer, and a second electrode sequentially stacked on the substrate, wherein the second electrode is connected to the first conductive portion in the first region, and the second electrode is connected to the second conductive portion in the second region, and The optical recognition unit comprises a third electrode, a recognition function layer and a fourth electrode stacked in sequence on the substrate, wherein the fourth electrode is connected to the second conductive portion in the second region; Preferably, the first conductive part and the second conductive part are in the same layer and made of the same material; Preferably, the second electrode and the fourth electrode are in the same layer and made of the same material; Preferably, the first electrode and the third electrode are in the same layer and made of the same material.

4. The display panel according to claim 3, characterized in that: The isolation structure includes a first support portion and a first crown portion, the first support portion is located between the first crown portion and the substrate, and an orthographic projection of the first support portion on the substrate is located within an orthographic projection of the first crown portion on the substrate, and The shielding structure includes a second supporting portion and a second crown portion, wherein the second supporting portion is located between the second crown portion and the substrate, and an orthographic projection of the second supporting portion on the substrate is located within an orthographic projection of the second crown portion on the substrate; Preferably, the first supporting portion and the second supporting portion are in the same layer and made of the same material; and / or, the first crown portion and the second crown portion are in the same layer and made of the same material; Preferably, the first supporting portion is the first conductive portion, and the second supporting portion is the second conductive portion; Preferably, the first support portion includes a first sub-support layer and a second sub-support layer. The first sub-support layer is located between the second sub-support layer and the substrate. The second sub-support layer is located between the first sub-support layer and the first crown portion. The orthographic projection of the second sub-support layer on the substrate is located within the orthographic projection of the first sub-support layer on the substrate. The second support portion includes a third sub-support layer and a fourth sub-support layer. The third sub-support layer is located between the fourth sub-support layer and the substrate. The fourth sub-support layer is located between the third sub-support layer and the second crown portion. The orthographic projection of the fourth sub-support layer on the substrate is located within the orthographic projection of the third sub-support layer on the substrate.

5. The display panel according to claim 3, wherein It further includes: a pixel definition layer, which is located between the isolation structure and the substrate and between the shielding structure and the substrate; wherein, the pixel definition layer is defined with a plurality of pixel openings, and the pixel openings limit the light-emitting unit or the light recognition unit, and the pixel openings and the isolation openings that limit the same light-emitting unit communicate with each other; Preferably, the pixel definition layer is an inorganic layer; Preferably, the pixel definition layer covers the edges of the first electrode and the third electrode.

6. The display panel according to claim 1 or 2, wherein the light-emitting units are at least divided into a first light-emitting unit, a second light-emitting unit, and a third light-emitting unit with different light-emitting colors. A shielding structure is provided between the first light-emitting unit and the light recognition unit and between the third light-emitting unit and the light recognition unit; Preferably, the wavelengths of the emitted light rays of the first light-emitting unit, the second light-emitting unit, and the third light-emitting unit decrease in sequence; Preferably, the second light-emitting unit emits green light. Further preferably, the first light-emitting unit and the third light-emitting unit emit red light and blue light in sequence.

7. The display panel according to claim 6, wherein The display panel includes a plurality of pixel repeating units. The pixel repeating unit includes at least one of the first light-emitting units, at least one of the second light-emitting units, and at least one of the third light-emitting units. And in the second region, at least one pixel repeating unit further includes at least one of the light recognition units, and the shielding structure includes a plurality of shielding units. The shielding units are in the shape of line segments and are arranged between the first light-emitting unit and the light recognition unit and between the third light-emitting unit and the light recognition unit; or, the distance from the centroid of the second light-emitting unit to the centroid of the adjacent light recognition unit is less than the distance from the centroid of any one of the first light-emitting unit and the third light-emitting unit to the centroid of the adjacent light recognition unit; Preferably, the shielding structure includes a plurality of shielding units. The shielding units are in the shape of line segments and are arranged between the first light-emitting unit and the light recognition unit and between the third light-emitting unit and the light recognition unit. Preferably, the area between the adjacent second light-emitting unit and the light recognition unit is outside the area where the shielding units are located, or the shielding units are arranged between the second light-emitting unit and the light recognition unit; or Preferably, the shielding structure includes a plurality of shielding units. The shielding units are in the shape of rings and surround the light recognition unit; Or Preferably, the shielding structure is in a grid shape to have a plurality of first openings and a plurality of second openings. The first openings limit the light-emitting units, and the second openings limit the light recognition units; More preferably, the shielding structure and the isolation structure are connected to each other and integrally formed; Preferably, the first light-emitting unit, the second light-emitting unit, and the third light-emitting unit are in a long strip shape, and the length directions of the first light-emitting unit and the third light-emitting unit point to the adjacent light recognition unit, and the width direction of the second light-emitting unit points to the adjacent light recognition unit; Preferably, the light recognition unit is located between two second light-emitting units.

8. The display panel according to claim 6, wherein The display panel includes a plurality of pixel repeating units. In the second region, at least one pixel repeating unit includes at least one first light-emitting unit, at least four second light-emitting units, at least one third light-emitting unit, and at least two light recognition units. And in the pixel repeating units including the light recognition units in the second region, at least two second light-emitting units are first-type light-emitting units, at least another two second light-emitting units are second-type light-emitting units, and The shielding structure includes a plurality of shielding units. The shielding units are in the shape of line segments and are arranged between the first light-emitting unit and the light recognition unit and between the third light-emitting unit and the light recognition unit. Preferably, the area between the adjacent first-type light-emitting unit and the light recognition unit is outside the area where the shielding units are located, or the shielding units are arranged between the first-type light-emitting unit and the light recognition unit; or, The distance from the centroid of the second-type light-emitting unit to the centroid of the adjacent light recognition unit is less than the distance from the centroid of any one of the first light-emitting unit, the first-type light-emitting unit, and the third light-emitting unit to the centroid of the adjacent light recognition unit; Preferably, the shielding structure includes a plurality of shielding units. The shielding units are in the shape of line segments and are arranged between the first light-emitting unit and the light recognition unit and between the third light-emitting unit and the light recognition unit. More preferably, the area between the adjacent first-type light-emitting unit and the light recognition unit is outside the area where the shielding units are located, or the shielding units are arranged between the first-type light-emitting unit and the light recognition unit; or Preferably, the shielding structure comprises a plurality of shielding units, each of which is annular and surrounds the light recognition unit; or Preferably, the shielding structure is in a grid shape to have a plurality of first openings and a plurality of second openings, the first openings limit the light emitting unit, and the second openings limit the light recognition unit; Further preferably, the shielding structure and the isolation structure are connected to each other to be integrally formed; Preferably, the first light-emitting unit, the first type of light-emitting unit, the second type of light-emitting unit and the third light-emitting unit are in the shape of long strips, and the length direction of the first light-emitting unit, the first type of light-emitting unit and the third light-emitting unit points to the adjacent light recognition unit, and the width direction of the second type of light-emitting unit points to the adjacent light recognition unit; Preferably, in the pixel repeating unit, the ratio of the number of the first light-emitting unit, the second type of light-emitting unit, the first type of light-emitting unit, the third light-emitting unit and the light recognition unit is 1:2:2:1:2; Preferably, When the display panel is in the recognition state, the first light emitting unit, the second light emitting unit, the third light emitting unit and the light recognition unit are turned on; and / or, When the display panel is in a non-recognition state, the light recognition unit is turned off and the second type of light-emitting unit is turned off, or the light recognition unit is turned off and the light output brightness of the second type of light-emitting unit is less than the light output brightness of the first type of light-emitting unit; preferably, the light recognition unit is located between two of the second type of light-emitting units.

9. The display panel according to claim 1 or 2, characterized in that, It also includes a first encapsulation layer, wherein the first encapsulation layer is located on a side of the display function layer away from the substrate and covers the light emitting unit and the light recognition unit; Preferably, the first encapsulation layer comprises a plurality of encapsulation units spaced apart from each other, and at least some of the encapsulation units correspond to the isolation openings respectively to cover the light-emitting units confined in the isolation openings; Preferably, the display panel further comprises a second encapsulation layer and a third encapsulation layer covering the first encapsulation layer, the second encapsulation layer is located between the first encapsulation layer and the third encapsulation layer, the first encapsulation layer covers the light recognition unit and the light-emitting unit, the third encapsulation layer covers the first encapsulation layer and the second encapsulation layer, and the second encapsulation layer is a planarization layer; Further preferably, the first encapsulation layer and the third encapsulation layer are inorganic layers, and the second encapsulation layer is an organic layer.

10. A display panel, characterized in that, comprising a display area, wherein the display area comprises a second area, in which the display panel comprises a plurality of pixel repeating units, the pixel repeating units comprising a first light emitting unit, at least two second light emitting units, a third light emitting unit and at least one light recognition unit, and The light recognition units and at least part of the second light emitting units are arranged alternately.

11. The display panel according to claim 10, wherein The pixel repeating unit includes two of the light recognition units, and the pixel repeating unit includes four second light emitting units. In the pixel repeating unit, two of the second light emitting units are first-type light emitting units, and the other two of the second light emitting units are second-type light emitting units. Preferably, the two light recognition units and the two first-type light-emitting units are arranged alternately.

12. The display panel according to claim 11, wherein the light recognition units in the pixel repeating unit are arranged between two second-type light-emitting units that are adjacent to each other and are respectively located in two pixel repeating units; Preferably, in each pixel repeating unit, one light recognition unit is located between two first-type light-emitting units in the pixel repeating unit where it is located, and the other light recognition unit is arranged between two first-type light-emitting units that are adjacent to each other and are respectively located in two pixel repeating units.

13. The display panel according to claim 11, wherein When the display panel is in the recognition state, the first light-emitting unit, the second light-emitting unit, the third light-emitting unit, and the light recognition unit are turned on; and / or When the display panel is in the non-recognition state, the light recognition unit is turned off, and the second-type light-emitting unit is turned off, or the light recognition unit is turned off, and the light-emitting brightness of the second-type light-emitting unit is less than the light-emitting brightness of the first-type light-emitting unit.

14. The display panel according to claim 11, wherein In the second region, the first light-emitting unit, the first-type light-emitting unit, the second-type light-emitting unit, the third light-emitting unit, and the light recognition unit are arranged in multiple rows and multiple columns. The first light-emitting unit and the third light-emitting unit are arranged in different columns. The light recognition units are arranged in the columns corresponding to the first light-emitting unit and the third light-emitting unit. The first-type light-emitting unit and the second-type light-emitting unit are arranged in the same column. The column where the first-type light-emitting unit is arranged is located between the column where the first light-emitting unit is arranged and the column where the third light-emitting unit is arranged. The first light-emitting unit, the third light-emitting unit, and the second-type light-emitting unit are arranged in the same row. The first-type light-emitting unit and the light recognition unit are arranged in the same row. The rows where the second-type light-emitting unit is arranged and the rows where the first-type light-emitting unit is arranged are arranged alternately; or In the second region, at least one of the second light-emitting units in the pixel repeating unit is a second-type light-emitting unit, and at least another second light-emitting unit is a first-type light-emitting unit. The first light-emitting unit, the first-type light-emitting unit, the second-type light-emitting unit, the third light-emitting unit, and the light recognition unit are arranged in multiple rows and multiple columns. The first light-emitting unit, the third light-emitting unit, and the light recognition unit are arranged in the same column. The first-type light-emitting unit and the second-type light-emitting unit are arranged in the same column. The columns where the first light-emitting unit is arranged and the columns where the first-type light-emitting unit is arranged are arranged alternately. The first light-emitting unit, the third light-emitting unit, and the second-type light-emitting unit are arranged in the same row. The first-type light-emitting unit and the light recognition unit are arranged in the same row. The rows where the first-type light-emitting unit is arranged and the rows where the second-type light-emitting unit is arranged are arranged alternately; Preferably, the wavelengths of the emitted light rays of the first light-emitting unit, the second light-emitting unit, and the third light-emitting unit decrease in sequence; Further preferably, the second light-emitting unit emits green light, and the first light-emitting unit and the third light-emitting unit sequentially emit red light and blue light.

15. The display panel according to any one of claims 11 to 14, characterized in that, The distance from the centroid of the second type of light-emitting unit to the centroid of the adjacent light recognition unit is less than the distance from the centroid of any one of the first light-emitting unit, the first type of light-emitting unit, and the third light-emitting unit to the centroid of the adjacent light recognition unit.

16. The display panel according to any one of claims 11 to 14, characterized in that, The first light-emitting unit, the first type of light-emitting unit, the second type of light-emitting unit, and the third light-emitting unit are strip-shaped, and the length directions of the first light-emitting unit, the first type of light-emitting unit, and the third light-emitting unit point to the adjacent light recognition unit, and the width direction of the second type of light-emitting unit points to the adjacent light recognition unit.

17. The display panel according to any one of claims 11 to 14, characterized in that, Further comprising: a substrate, wherein the light recognition unit, the first light-emitting unit, the second light-emitting unit, and the third light-emitting unit are located on the substrate; a shielding structure, located in the second region and on the substrate, wherein the shielding structure is located between the light recognition unit and the light-emitting unit.

18. The display panel according to claim 17, wherein The display area further includes a first region, and the first light-emitting unit, the second light-emitting unit, and the third light-emitting unit are arranged in the first region. The display panel further includes: an isolation structure, located in the first region and on the substrate, the isolation structure defining a plurality of isolation openings, and the isolation openings limit the first light-emitting unit, the second light-emitting unit, and the third light-emitting unit; wherein at least a part of the shielding structure and at least a part of the isolation structure are of the same layer and the same material.

19. A display device, characterized in that, A display panel according to any one of claims 1 to 18.

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