Display panel

Abstract

The application provides a display panel; the display panel comprises a substrate layer and a light-emitting layer; the substrate layer comprises a first shielding layer arranged corresponding to a first display area; the light-emitting layer comprises first light-emitting pixels arranged in the first display area and second light-emitting pixels arranged in a second display area; the first shielding layer comprises first shielding subparts arranged corresponding to the first light-emitting pixels and second shielding subparts connecting two adjacent first shielding subparts. By arranging the first shielding layer comprising the first shielding subparts and the second shielding subparts in the first display area, the first shielding layer is used to shield part of the light-emitting layer, the metal electrode in the light-emitting layer is patterned by using a laser patterning process from the back side of the display panel, and the light transmittance of the first display area is improved.

Description

[0001] This divisional application is a divisional application of Chinese patent application No. 202111527786.9, filed on December 14, 2021, entitled "Display Panel". Technical Field

[0002] This application relates to the field of display technology, and more particularly to a display panel. Background Technology

[0003] Achieving full-screen display and under-display photosensitive technology has always been a challenge in the design of organic light-emitting diode (OLED) display panels. The most significant challenge lies in improving the light transmittance of the under-display photosensitive area. Current common designs involve creating holes in the photosensitive area, which results in higher transmittance, but this area does not emit light or display anything, failing to achieve a full-screen effect and leading to a poor user experience. Recent methods that increase transmittance by reducing pixel density in the photosensitive area can achieve a degree of full-screen display; however, the transmittance of the photosensitive area remains below 18%, insufficient to meet the requirements of under-display photosensitive elements.

[0004] Therefore, current display panels have a technical problem of low light transmittance in the light-sensitive areas. Summary of the Invention

[0005] This application provides a display panel to alleviate the technical problem of low light transmittance in the photosensitive area of ​​current display panels.

[0006] This application provides a display panel including a first display area and a second display area adjacent to the first display area. The first display area includes a photosensitive area and a transition area disposed between the photosensitive area and the second display area. The display panel includes:

[0007] The substrate layer includes a first shielding layer disposed corresponding to the first display area;

[0008] A light-emitting layer, disposed on one side of the substrate layer, includes: a first light-emitting pixel disposed in the first display area, and a second light-emitting pixel disposed in the second display area;

[0009] The first masking layer includes a first masking sub-part, a second masking sub-part, and a third masking sub-part. The first masking sub-part is correspondingly disposed with at least one first light-emitting pixel. The second masking sub-part connects two adjacent first masking sub-parts. The third masking sub-part overlaps with at least a portion of the transition region. The third masking sub-part is also connected to the first masking sub-part adjacent to the third masking sub-part through the second masking sub-part.

[0010] The light-emitting layer further includes:

[0011] The first electrode is disposed on one side of the substrate layer;

[0012] A light-emitting material layer is disposed on the side of the first electrode away from the substrate layer;

[0013] The second electrode is disposed on the side of the light-emitting material layer away from the substrate layer;

[0014] In the first display area, the second electrode is provided with a light-transmitting hole corresponding to the area surrounded by the adjacent first and second blocking sub-parts, and / or the area surrounded by the adjacent first, second, and third blocking sub-parts.

[0015] In the display panel of this application, the second blocking sub-part is connected to two adjacent first blocking sub-parts, or the second blocking sub-part is connected to the adjacent first blocking sub-parts and the third blocking sub-parts;

[0016] The third shielding part is provided corresponding to the edge of the photosensitive area.

[0017] In the display panel of this application, the distance between the edge of the third blocking sub-part located in the photosensitive area and the edge of the transition area near the photosensitive area is greater than or equal to 1 micrometer;

[0018] The distance between the edge of the third occlusion sub-part located in the photosensitive area and the edge of the third occlusion sub-part located in the transition area is greater than or equal to 10 micrometers.

[0019] In the display panel of this application, the third blocking sub-part completely covers the transition area.

[0020] In the display panel of this application, the distance between the edge of the orthographic projection of the first blocking sub-part on the light-emitting layer and the edge of the corresponding first electrode is greater than or equal to 2 micrometers.

[0021] In the display panel of this application, the shape of the first shielding part is the same as the shape of the corresponding first electrode.

[0022] In the display panel of this application, the display panel further includes:

[0023] A driving circuit layer is disposed between the substrate layer and the light-emitting layer, the driving circuit layer including a plurality of first transistors disposed corresponding to the first display area and a plurality of second transistors disposed corresponding to the second display area;

[0024] The substrate layer further includes a second shielding layer corresponding to the second display area. The second shielding layer includes a fourth shielding sub-part corresponding to the second transistor. The number of the first shielding sub-parts and the number of the fourth shielding sub-parts are the same in the same unit area.

[0025] In the display panel of this application, the third blocking sub-part is disposed overlapping the first transistor.

[0026] In the display panel of this application, the fourth shielding sub-part is powered on.

[0027] In the display panel of this application, the driving circuit layer further includes: a first trace electrically connected to the first transistor and providing a driving signal to the first transistor, and a second trace connecting the first transistor and the first light-emitting pixel;

[0028] In the photosensitive area, the second blocking sub-part overlaps with the first trace and / or the second trace.

[0029] In the display panel of this application, the first transistor is disposed in the transition area; in the photosensitive area, the second blocking sub-part overlaps with the second trace, and the width of the second blocking sub-part is greater than the width of the second trace.

[0030] In the display panel of this application, the first trace is disposed around the edge of the photosensitive area in the transition region, and the third blocking sub-part overlaps with the first trace disposed at least partially around the edge of the photosensitive area.

[0031] In the display panel of this application, the second trace is curved, and the second shielding part corresponding to the second trace is also curved.

[0032] In the display panel of this application, the first transistor is disposed in the photosensitive area, the first blocking sub-part overlaps with the first transistor, the second blocking sub-part overlaps with the first trace, and the width of the second blocking sub-part is greater than the width of the first trace.

[0033] In the display panel of this application, at least a portion of the first blocking sub-part has a wavy or serrated edge, the second blocking sub-part has a wavy or serrated edge, and the edge of the third blocking sub-part near the photosensitive area has a wavy or serrated edge.

[0034] In the display panel of this application, the shape of the photosensitive area includes a circle or an ellipse, and the shape of the edge of the transition area near the second display area includes an ellipse.

[0035] In the display panel of this application, the light-transmitting hole does not overlap with the first shielding layer.

[0036] In the display panel of this application, the number of the first light-emitting pixels and the number of the second light-emitting pixels are the same per unit area.

[0037] In the display panel of this application, the second electrode has a protrusion formed away from the substrate layer at the edge of the light-transmitting hole.

[0038] This application also proposes a display panel including a first display area and a second display area adjacent to the first display area, wherein the first display area includes a photosensitive area, and the display panel includes:

[0039] The substrate layer includes a first shielding layer disposed corresponding to the first display area;

[0040] A light-emitting layer, disposed on one side of the substrate layer, includes: a first light-emitting pixel disposed in the first display area, and a second light-emitting pixel disposed in the second display area;

[0041] The first shielding layer includes a first shielding sub-part corresponding to at least one first light-emitting pixel, a second shielding sub-part connecting two adjacent first shielding sub-parts, and a third shielding sub-part surrounding the first shielding sub-part and the second shielding sub-part. The third shielding sub-part is also connected to the first shielding sub-part adjacent to the third shielding sub-part through the second shielding sub-part.

[0042] The light-emitting layer further includes:

[0043] The first electrode is disposed on one side of the substrate layer;

[0044] A light-emitting material layer is disposed on the side of the first electrode away from the substrate layer;

[0045] The second electrode is disposed on the side of the light-emitting material layer away from the substrate layer;

[0046] In the first display area, the second electrode is provided with a light-transmitting hole corresponding to the area surrounded by the adjacent first and second blocking sub-parts, and / or the area surrounded by the adjacent first, second, and third blocking sub-parts.

[0047] The beneficial effects of this application are as follows: This application provides a display panel including a first display area and a second display area adjacent to the first display area. The display panel includes a substrate layer and a light-emitting layer. The substrate layer includes a first shielding layer corresponding to the first display area. The light-emitting layer includes first light-emitting pixels disposed in the first display area and second light-emitting pixels disposed in the second display area. The number of first light-emitting pixels and the number of second light-emitting pixels are the same per unit area. The first shielding layer includes a first shielding sub-part corresponding to the first light-emitting pixels and a second shielding sub-part connecting two adjacent first shielding sub-parts. By providing a first shielding layer including the first shielding sub-part and the second shielding sub-part in the first display area, this application utilizes the first shielding layer to shield a portion of the light-emitting layer, thereby achieving patterning of the metal electrodes in the light-emitting layer from the back side of the display panel using laser patterning technology, and improving the light transmittance of the first display area.

[0048] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description

[0049] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0050] To gain a more complete understanding of this application and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings, wherein the same reference numerals in the following description denote the same parts.

[0051] Figure 1 This is a plan view of the display panel provided in an embodiment of this application.

[0052] Figure 2 This is a partial enlarged view of the display panel including the first display area provided in the embodiments of this application.

[0053] Figure 3 This is a plan view of a display panel with a first shielding layer provided in an embodiment of this application.

[0054] Figure 4 This is a schematic diagram of a second structure of the first shielding layer of the display panel provided in the embodiments of this application.

[0055] Figure 5 This is a schematic diagram of a third structure of the first shielding layer of the display panel provided in the embodiments of this application.

[0056] Figure 6 yesFigure 5 The diagram shows the structure of the third shielding sub-section.

[0057] Figure 7 yes Figure 5 The diagram shows the structure of the first shielding sub-part.

[0058] Figure 8 This is a partial cross-sectional view of a plan view of the display panel provided in an embodiment of this application.

[0059] Figure 9 The difference in morphology of the second electrode formed under different laser energies is due to the different laser energies. Detailed Implementation

[0060] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the protection scope of this application.

[0061] This application provides a display panel with a first display area and a second display area adjacent to the first display area. The display panel includes a substrate layer and a light-emitting layer. The substrate layer includes a first shielding layer corresponding to the first display area. The light-emitting layer includes first light-emitting pixels disposed in the first display area and second light-emitting pixels disposed in the second display area. The number of first light-emitting pixels and the number of second light-emitting pixels are the same per unit area. The first shielding layer includes a first shielding sub-part corresponding to the first light-emitting pixels and a second shielding sub-part connecting two adjacent first shielding sub-parts. This application improves the light transmittance of the first display area by providing a first shielding layer including the first shielding sub-part and the second shielding sub-part in the first display area, thereby shielding a portion of the light-emitting layer. This allows for patterning of the metal electrodes in the light-emitting layer from the back side of the display panel using a laser patterning process.

[0062] The following is combined with Figures 1 to 8 The structural and functional features of the display panel provided in the embodiments of this application will be described.

[0063] This application provides a display panel including a display area AA and a non-display area NA adjacent to the display area AA. Optionally, the non-display area NA surrounds the display area AA, such that the display area AA is enclosed by the non-display area NA. The display area AA is the region within the display panel used for display functions, and it contains multiple display units that implement its display functions. The non-display area NA may be a border area of ​​the display panel, and it may contain functional components, such as a driver chip, that assist the display units within the display area AA in performing their display functions.

[0064] The display area AA includes a second display area A2 and a first display area A1, with the second display area A2 and the first display area A1 being adjacent to each other. It can be understood that the display panel has display functions in both the second display area A2 and the first display area A1; the first display area A1 is provided with a first luminous pixel, and the second display area A2 is provided with a second luminous pixel, and the number of the first luminous pixels and the number of the second luminous pixels in the same unit area are the same, so that the first display area A1 and the second display area A2 present the same or similar display effects.

[0065] Optionally, the second display area A2 may surround the first display area A1 along the edge of the first display area A1; the first display area A1 may also be located on one side of the second display area A2, so that the second display area A2 partially surrounds the first display area A1.

[0066] The first display area A1 includes an adjacent photosensitive area S1 and a transition area S2. The transition area S2 may surround the photosensitive area S1 along its edge; alternatively, the transition area S2 may be located on the side of the photosensitive area S1, partially surrounding it. It is understood that the display panel has high light transmittance in the photosensitive area S1, and a photosensitive element is positioned corresponding to the photosensitive area S1, sensing signals such as light through the photosensitive area S1. The photosensitive element may be an optical element of a camera or a facial recognition sensor.

[0067] Optionally, the display panel has the same pixel density and sub-pixel shape in the transition area S2 and the photosensitive area S1, and the light transmittance of the photosensitive area S1 is greater than that of the transition area S2 and also greater than that of the second display area A2.

[0068] Furthermore, the display panel includes a substrate layer 10, a driving circuit layer 20 disposed on the substrate layer 10, a light-emitting layer 30 disposed on the driving circuit layer 20, and an encapsulation layer 40 disposed on the light-emitting layer 30.

[0069] Optionally, the substrate layer 10 may include a substrate layer 101 and a buffer layer 102 disposed on the substrate layer 101. The substrate layer 101 may be a glass substrate or a polyimide substrate, etc. The buffer layer 102 may include a single layer or multiple layers of buffer layers, and the buffer layer 102 is made of inorganic materials, such as silicon nitride.

[0070] The substrate layer 10 also includes a first shielding layer Z1 (see reference) Figure 3 and Figure 8 At least a portion of the first shielding layer Z1 is located in the photosensitive area S1. Optionally, a portion of the first shielding layer Z1 may also be located in the transition area S2.

[0071] The substrate layer 10 further includes a second shielding layer Z2, which is disposed corresponding to the second display area A2.

[0072] Optionally, the first shielding layer Z1 and the second shielding layer Z2 may be located between the substrate layer 101 and the buffer layer 102, or between multiple stacked buffer layers. The first shielding layer Z1 and the second shielding layer Z2 may be made of the same material. Materials used to make the first shielding layer Z1 and the second shielding layer Z2 include aluminum, platinum, palladium, silver, molybdenum, lithium, tungsten, etc. The thickness of the first shielding layer Z1 and the second shielding layer Z2 may be between 500 angstroms and 5000 angstroms.

[0073] The driving circuit layer 20 is provided with a driving circuit, as well as various traces, multiple thin-film transistors and multiple input / output terminals for implementing the driving circuit. The driving circuit layer 20 is used to provide driving and control signals for each light-emitting element in the light-emitting layer 30.

[0074] Specifically, the driving circuit layer 20 includes: a semiconductor layer 201 disposed on the substrate layer 10, a first gate insulating layer 202 covering the semiconductor layer 201, a first gate 203 disposed on the first gate insulating layer 202, a second gate insulating layer 204 covering the first gate 203, a second gate 206 disposed on the second gate insulating layer 204, an interlayer insulating layer 207 covering the second gate 206, source / drain electrodes 208 disposed on the interlayer insulating layer 207, and a planarization layer 209 covering the source / drain electrodes 208. The source / drain electrodes 208 are electrically connected to opposite ends of the semiconductor layer 201; the semiconductor layer 201, the first gate 203, the second gate 206, and the source / drain electrodes 208, corresponding to each other, constitute a thin-film transistor.

[0075] The driving circuit layer 20 is provided with a plurality of thin-film transistors as described above, specifically including a plurality of second transistors T2 corresponding to the second display area A2 and a plurality of first transistors T1 corresponding to the first display area A1. The second shielding layer Z2 is provided corresponding to the second transistors T2, and a portion of the first shielding layer Z1 is provided corresponding to the first transistors T1.

[0076] The driving circuit layer 20 further includes: a first trace electrically connected to the first transistor T1 and providing a driving signal to the first transistor T1, and a second trace connecting the first transistor T1 and the first light-emitting pixel. The first trace may be a data line, a scan line, etc., and the second trace may be a trace connecting the first transistor T1 and the anode of the first light-emitting pixel.

[0077] Furthermore, the orthographic projection of the semiconductor layer 201 of the second transistor T2 onto the substrate 10 coincides with at least a portion of the second shielding layer Z2. The second shielding layer Z2 is used to block light incident from the back of the display panel onto the semiconductor layer 201 of the second transistor T2, preventing the second transistor T2 from being affected by light interference and thus its performance stability. The orthographic projection of the semiconductor layer 201 of the first transistor T1 onto the substrate 10 coincides with a portion of the first shielding layer Z1. This portion of the first shielding layer Z1 is used to block light incident from the back of the display panel onto the semiconductor layer 201 of the first transistor T1, preventing the first transistor T1 from being affected by light interference and thus its performance stability.

[0078] Optionally, the orthographic projection of the second shielding layer Z2 onto the driving circuit layer 20 coincides with the second transistor T2. The second shielding layer Z2 corresponding to the second transistor T2 and the portion of the first shielding layer Z1 corresponding to the first transistor T1 are electrically connected to the power-conducting traces 205 located in the driving circuit layer 20. The power-conducting traces 205 provide a specific voltage to the second shielding layer Z2 and the portion of the first shielding layer Z1 to eliminate static electricity generated on the second shielding layer Z2 and the first shielding layer Z1, preventing damage to the circuitry in the driving circuit layer 20 due to electrostatic discharge.

[0079] The light-emitting layer 30 includes the first light-emitting pixel and the second light-emitting pixel; specifically, the light-emitting layer 30 includes: a pixel definition layer 304 disposed on the planarization layer 209, a first electrode 301 disposed on the planarization layer 209 and exposed through an opening in the pixel definition layer 304, a light-emitting material layer 302 disposed within the opening of the pixel definition layer 304 and in contact with the first electrode 301, and a second electrode 303 disposed on the pixel definition layer 304 and in contact with the light-emitting material layer 302. The second electrode 303 located in the first display area A1 is provided with a light-transmitting hole, which corresponds to the light-transmitting area TS in the first display area A1, and the light-transmitting hole does not overlap with the first blocking layer Z1, thereby giving the second electrode 303 located in the first display area A1 a patterned structure to improve the light transmittance of the first display area A1.

[0080] The first electrode 301, the light-emitting material layer 302, and the second electrode 303, which are corresponding to each other, constitute a light-emitting pixel. The light-emitting layer 30 includes a plurality of such light-emitting pixels to realize its light-emitting display function.

[0081] Optionally, the first transistor T1 can be disposed within the photosensitive area S1 and the transition area S2, or it can be disposed only within the transition area S2. When the first transistor T1 is disposed only within the transition area S2, the light transmittance of the photosensitive area S1 can be further improved.

[0082] Furthermore, when the first transistor T1 is only disposed within the transition region S2, the first electrode 301 located in the photosensitive region S1 and the transition region S2 is electrically connected to the first transistor T1, and provides an electrical signal to the first electrode 301 in the photosensitive region S1 and the transition region S2 through the first transistor T1 to control the light-emitting function of the light-emitting unit located in the photosensitive region S1 and the transition region S2. The first electrode 301 located in the second display region A2 is electrically connected to the second transistor T2, and provides an electrical signal to the first electrode 301 in the second display region A2 through the second transistor T2 to control the light-emitting function of the light-emitting unit located in the second display region A2.

[0083] It is understood that in this embodiment, the thin-film transistors used to control the light-emitting unit of the photosensitive area S1 are disposed in the transition area S2, which reduces the number of thin-film transistors and the number of traces in the photosensitive area S1, and improves the light transmittance of the display panel in the photosensitive area S1.

[0084] Optionally, the first electrode 301 is the anode and the second electrode 303 is the cathode. The hole carriers of the first electrode 301 and the electron carriers of the second electrode 303 combine in the light-emitting material layer 302 to emit light.

[0085] The encapsulation layer 40 completely covers the light-emitting layer 30 and is used to seal and protect the light-emitting layer 30. The encapsulation layer 40 can be a composite structure film layer composed of organic layers, inorganic layers and organic layers stacked together.

[0086] The following is in conjunction with the appendix Figures 2 to 8 The structural features of the first shielding layer Z are described.

[0087] Optionally, the first shielding layer Z1 is located within the photosensitive area S1 and a portion of the transition area S2, and the orthogonal projection of the patterned second electrode 303 located in the photosensitive area S1 onto the substrate layer 10 coincides with at least a portion of the first shielding layer Z1, and the first shielding layer Z1 has a patterned structure. In this embodiment, by setting a first shielding layer Z1 corresponding to the photosensitive area S1 and using the first shielding layer Z1 to shield the second electrode 303 of the photosensitive area S1, patterning of the second electrode 303 from the back side of the display panel using a laser patterning process can be achieved to form a patterned second electrode 303, further improving the light transmittance of the photosensitive area S1.

[0088] Further, the first masking layer Z1 includes: a plurality of first masking sub-parts Z11 corresponding to the first light-emitting pixel, a third masking sub-part Z13 at least partially surrounding the plurality of first masking sub-parts Z11, and a second masking sub-part Z12 connecting two adjacent first masking sub-parts Z11; optionally, the second masking sub-part Z12 may also connect adjacent first masking sub-parts Z11 and the third masking sub-part Z13. It can be understood that the first masking sub-parts Z11, the third masking sub-part Z13, and the second masking sub-part Z12 are all connected to each other to form a whole; and the first masking layer Z1 is patterned in the area corresponding to at least the first masking sub-parts Z11 and the second masking sub-part Z12, and has a certain hollow area inside to ensure that the photosensitive area S1 has good light transmittance.

[0089] The second shielding layer Z2 includes a fourth shielding sub-section corresponding to the second transistor T2. Optionally, the number of first shielding sub-sections Z11 per unit area is the same as the number of fourth shielding sub-sections.

[0090] Optionally, when the first transistor T1 is disposed in the transition region S2, in the photosensitive region S1, the second blocking sub-part Z12 overlaps with the second trace, and the width of the second blocking sub-part Z12 is greater than the width of the second trace, to form a blocking protection for the second trace and prevent damage to the second trace during laser patterning of the second electrode 303. In this case, the first trace is disposed around the edge of the photosensitive region S1 in the transition region S2, and the third blocking sub-part Z13 overlaps with at least partially the first trace disposed around the edge of the photosensitive region S1 to form a blocking protection for the first trace. Furthermore, a portion of the third blocking sub-part Z13 overlaps with the first transistor T1 to form a blocking protection for the first transistor T1.

[0091] Optionally, when the first transistor T1 is disposed in the photosensitive area S1, the first blocking sub-part Z11 overlaps with the first transistor T1, the second blocking sub-part Z12 overlaps with the first trace, and the width of the second blocking sub-part Z12 is greater than the width of the first trace, thereby forming a blocking protection for the first transistor T1 and the first trace.

[0092] In addition, the first shielding sub-part Z11 will also shield the first electrode 301 and the light-emitting material layer 302 located in the photosensitive area S1 to prevent the laser from damaging the first electrode 301 and the light-emitting material layer 302 during the patterning process of the second electrode 303.

[0093] The third blocking sub-part Z13 at least covers the boundary between the photosensitive area S1 and the transition area S2. It is understood that the transition area S2 contains a large number of thin-film transistors and connection traces, such as data lines and scan lines. In this embodiment, by blocking the boundary between the photosensitive area S1 and the transition area S2 with the third blocking sub-part Z13, damage to the traces and thin-film transistors located in the transition area S2 can be prevented by laser when the second electrode 303 in the photosensitive area S1 is laser-patterned.

[0094] Optionally, the transition region S2 is arranged in a complete circle around the photosensitive region S1, and correspondingly, the third blocking sub-part Z13 is also arranged in a complete circle around the first blocking sub-part Z11 and the second blocking sub-part Z12, so as to block and protect the traces and thin-film transistors of the transition region S2 located at the edge of the photosensitive region S1.

[0095] Furthermore, the first portion of the third blocking sub-part Z13 is located in the photosensitive area S1, and the second portion of the third blocking sub-part Z13 is located in the transition area S2. In this embodiment, the third blocking sub-part Z13 extends across the photosensitive area S1 into the transition area S2, further enhancing the protection of the thin-film transistors and interconnects within the transition area S2.

[0096] Furthermore, based on the control of the precision of the laser patterning process and the protection of the traces in the transition region S2, the distance between the edge of the third blocking sub-part Z13 located in the photosensitive area S1 and the edge of the transition region S2 near the photosensitive area S1 is greater than or equal to 1 micrometer. The distance between the edge of the third blocking sub-part Z13 located in the photosensitive area S1 and the edge of the third blocking sub-part Z13 located in the transition region S2 is greater than or equal to 10 micrometers.

[0097] Optionally, the third shielding sub-part Z13 can also completely cover the transition region S2, forming comprehensive protection for the thin-film transistors and interconnecting traces within the transition region S2. Furthermore, a portion of the third shielding sub-part Z13 located within the transition region S2 is electrically connected to the second trace corresponding to a region of the semiconductor layer 201 to obtain a specific voltage and prevent static electricity accumulation.

[0098] Optionally, the third shielding sub-part Z13, through its orthogonal projection onto the driving circuit layer 20, covers at least a portion of the first transistor T1, thereby blocking light emitted from the back of the display panel toward the first transistor T1 and preventing damage to the first transistor T1 caused by the laser used by the second electrode 303 of the photosensitive area S1 during the laser patterning process.

[0099] Furthermore, the first shielding sub-part Z11 and its corresponding first electrode 301 have the same shape, and the distance between the edge of the orthographic projection of the first shielding sub-part Z11 on the light-emitting layer 30 and the edge of the corresponding first electrode 301 is greater than or equal to 2 micrometers. This embodiment is designed to fully protect the first electrode 301 from laser damage during laser patterning of the second electrode 303. Optionally, the shape of the first electrode 301 includes one or more of a circle, an ellipse, and a polygon; then the shape of the main first electrode in the second electrode 303 and the first shielding sub-part Z11 also includes one or more of a circle, an ellipse, and a polygon corresponding to the shape of the first electrode 301.

[0100] The display panel further includes a first trace electrically connecting the first electrode 301 located in the photosensitive area S1 and the first transistor T1, and the second blocking sub-part Z12's orthogonal projection on the light-emitting layer 30 covers the first trace. It can be understood that when laser patterning is performed on the second electrode 303 located in the photosensitive area S1, the second blocking sub-part Z12 blocks the light rays incident on the first trace to ensure that the first trace is protected from laser damage.

[0101] Optionally, based on the control of the precision of the laser patterning process, the distance between the edge of the orthographic projection of the second shielding sub-part Z12 on the light-emitting layer 30 and the edge of the corresponding first trace is set to be greater than or equal to 2 micrometers, so as to achieve effective protection of the first trace.

[0102] Furthermore, if the first trace is curved, such as a serpentine trace, then the shape of the second shielding sub-part Z12 corresponding to the first trace is also curved (e.g., ...). Figure 4 (As shown). Based on this, at least a portion of the auxiliary second electrode in the photosensitive area S1 is also curved, corresponding to the shape of the second shielding sub-part Z12.

[0103] Furthermore, at least a portion of the edges of the first blocking sub-part Z11 are wavy or serrated, the edge of the third blocking sub-part Z13 near the photosensitive area S1 is wavy or serrated, and the edge of the second blocking sub-part Z12 is wavy or serrated (e.g. Figures 5 to 7 (As shown). It can be understood that the light-shielding structure with wavy or serrated edges in this embodiment can reduce the diffraction effect when light passes through the photosensitive area S1, and further improve the light transmittance of the photosensitive area S1.

[0104] Optionally, the photosensitive area S1 is circular or elliptical in shape, the edge of the transition area S2 near the second display area A2 is elliptical in shape, and the edge of the transition area S2 near the photosensitive area S1 is circular in shape.

[0105] In summary, by electrically connecting the first electrode 301 of the photosensitive area S1 to the first transistor T1, the number of metal traces and thin-film transistors in the photosensitive area S1 is reduced, thereby improving the light transmittance of the photosensitive area S1. Furthermore, by using the first shielding layer Z1 to shield the second electrode 303 of the photosensitive area S1, the second electrode 303 can be patterned from the back side of the display panel using a laser patterning process to form a patterned second electrode, further improving the light transmittance of the photosensitive area S1. This is beneficial for achieving efficient light collection of the photosensitive element.

[0106] This application also provides a method for manufacturing a display panel, used to manufacture the aforementioned display panel.

[0107] Please see Figures 1 to 8 The display panel includes a display area AA and a non-display area NA adjacent to the display area AA. The display area AA includes a second display area A2 and a first display area A1 adjacent to the second display area A2. The first display area A1 includes a photosensitive area S1 and a transition area S2 adjacent to the photosensitive area S1. The method for manufacturing the display panel includes the following steps:

[0108] Step S101: Fabricate a substrate layer 10. The substrate layer 10 includes a first shielding layer Z1 corresponding to the first display area A1. The first shielding layer Z1 includes a first shielding sub-part Z11 and a second shielding sub-part Z12 connecting two adjacent first shielding sub-parts Z11.

[0109] Optionally, the first shielding layer Z1 further includes a third shielding sub-part Z13 disposed around the first shielding sub-part Z11 and the second shielding sub-part Z12.

[0110] Optionally, the substrate layer 10 further includes a second shielding layer Z2 corresponding to the second display A2. Materials used to fabricate the first shielding layer Z1 and the second shielding layer Z2 include aluminum, platinum, palladium, silver, molybdenum, lithium, tungsten, etc. The thickness of the first shielding layer Z1 and the second shielding layer Z2 can be between 500 angstroms and 5000 angstroms.

[0111] Step S102: A raw metal layer is formed on one side of the substrate layer 10.

[0112] Specifically, before step S102, the method further includes: fabricating a driving circuit layer 20 on the substrate layer 10. The driving circuit layer 20 includes a plurality of second transistors T2 disposed corresponding to the second display area A2 and a plurality of first transistors T1 disposed corresponding to the first display area A1. The orthographic projection of the second shielding layer Z2 onto the driving circuit layer 20 covers the second transistors T2, and the orthographic projection of a portion of the first shielding layer Z1 onto the driving circuit layer 20 covers the first transistors T1. For more specific structural and arrangement features of the first shielding layer Z1 and the second shielding layer Z2, please refer to the description in the above embodiments, which will not be repeated here.

[0113] A first electrode 301 and a light-emitting material layer 302 located on the first electrode 301 are fabricated on the driving circuit layer 20, so that the first electrode 301 located in the photosensitive area S1 and the transition area S2 is electrically connected to the first transistor T1, and the first electrode 301 located in the second display area A2 is electrically connected to the second transistor T2.

[0114] In step S102, the original metal layer is a semi-transparent metal layer that covers the entire surface, and the original metal layer is electrically connected to the luminescent material layer 302.

[0115] In step S103, a laser is used to irradiate the original metal layer located in the photosensitive area S1 from one side of the substrate layer 10. Part of the laser is blocked by the first shielding sub-part Z11 and the second shielding sub-part Z12, while the other part of the laser irradiates the original metal layer through the hollow area on the first shielding layer Z, so that a part of the original metal layer is melted or weakened by the high temperature generated by the laser.

[0116] Step S104: The original metal layer irradiated by the laser is peeled off to form a patterned second electrode 303.

[0117] When using a laser to pattern the original metal layer, it is necessary to control the laser intensity. Please refer to [link / reference needed]. Figure 9 The diagram illustrates the morphological differences of the second electrode 303 formed after patterning the original metal layer under different laser intensities. Here, BS represents the film layer below the second electrode 303. In (A), the lower laser energy results in incomplete patterning of the original metal layer, affecting the light transmittance of the final photosensitive area S1. In (B), the excessively high laser energy causes the film layer BS below the second electrode 303 to be damaged by the laser, and spiky protrusions form at the edges of the second electrode 303, severely impacting the performance of the display panel. In (C), the moderate laser energy ensures that the film layer BS below the second electrode 303 remains intact, and the edges of the second electrode 303 are smooth; the display panel produced under these conditions exhibits the best performance.

[0118] The method for manufacturing the display panel further includes the step of manufacturing an encapsulation layer 40 covering the second electrode 303.

[0119] Another embodiment of this application provides a display device, which includes the display panel provided in the above embodiments of this application, and a photosensitive element disposed on the side of the display panel near the substrate layer 10. The photosensitive element is disposed corresponding to the photosensitive area S1 in the first display area of ​​the display panel, so as to obtain external light through the photosensitive area S1. In practical applications, the photosensitive element can be a camera, fingerprint recognition, infrared sensor, etc., and is not limited here.

[0120] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0121] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0122] The embodiments, implementation methods, and related technical features of this application can be combined and substituted for each other without conflict.

[0123] The above are merely preferred embodiments of this application and are not intended to limit this application in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this application without departing from the scope of the technical solution of this application shall still fall within the scope of the technical solution of this application.

Claims

1. A display panel, characterized in that, The display panel includes a first display area and a second display area adjacent to the first display area. The first display area includes a photosensitive area and a transition area disposed between the photosensitive area and the second display area. The display panel includes: The substrate layer includes a first shielding layer disposed corresponding to the first display area; A light-emitting layer, disposed on one side of the substrate layer, includes: a first light-emitting pixel disposed in the first display area, and a second light-emitting pixel disposed in the second display area; The first shielding layer includes a first shielding sub-part, a second shielding sub-part, and a third shielding sub-part surrounding the first shielding sub-part and the second shielding sub-part. The first shielding sub-part is disposed corresponding to the first light-emitting pixel. The second shielding sub-part connects two adjacent first shielding sub-parts. The third shielding sub-part overlaps with at least a portion of the transition area. The third shielding sub-part is also connected to the first shielding sub-part adjacent to the third shielding sub-part through the second shielding sub-part. The light-emitting layer further includes: The first electrode is disposed on one side of the substrate layer; A light-emitting material layer is disposed on the side of the first electrode away from the substrate layer; The second electrode is disposed on the side of the light-emitting material layer away from the substrate layer; In the first display area, the second electrode is provided with a light-transmitting hole corresponding to the area surrounded by the adjacent first and second blocking sub-parts, and / or the area surrounded by the adjacent first, second, and third blocking sub-parts; and the second electrode has a smooth protrusion away from the substrate layer at the edge of the light-transmitting hole.

2. The display panel according to claim 1, characterized in that, The second blocking sub-part is connected to two adjacent first blocking sub-parts, or the second blocking sub-part is connected to the adjacent first blocking sub-parts and the third blocking sub-part; The third shielding part is provided corresponding to the edge of the photosensitive area.

3. The display panel according to claim 2, characterized in that, The distance between the edge of the third shielding sub-part located in the photosensitive area and the edge of the transition area near the photosensitive area is greater than or equal to 1 micrometer; The distance between the edge of the third occlusion sub-part located in the photosensitive area and the edge of the third occlusion sub-part located in the transition area is greater than or equal to 10 micrometers.

4. The display panel according to claim 3, characterized in that, The third shielding sub-part completely covers the transition area.

5. The display panel according to claim 2, characterized in that, The distance between the edge of the orthogonal projection of the first shielding part on the light-emitting layer and the edge of the corresponding first electrode is greater than or equal to 2 micrometers.

6. The display panel according to claim 5, characterized in that, The shape of the first shielding part is the same as the shape of the corresponding first electrode.

7. The display panel according to claim 2, characterized in that, The display panel also includes: A driving circuit layer is disposed between the substrate layer and the light-emitting layer, the driving circuit layer including a plurality of first transistors disposed corresponding to the first display area and a plurality of second transistors disposed corresponding to the second display area; The substrate layer further includes a second shielding layer corresponding to the second display area. The second shielding layer includes a fourth shielding sub-part corresponding to the second transistor. The number of the first shielding sub-parts and the number of the fourth shielding sub-parts are the same in the same unit area.

8. The display panel according to claim 7, characterized in that, The third shielding sub-section is disposed overlapping the first transistor.

9. The display panel according to claim 7, characterized in that, The fourth shielding sub-unit is energized.

10. The display panel according to claim 7, characterized in that, The driving circuit layer further includes: a first trace electrically connected to the first transistor and providing a driving signal to the first transistor; and a second trace connecting the first transistor and the first light-emitting pixel. In the photosensitive area, the second blocking sub-part overlaps with the first trace and / or the second trace.

11. The display panel according to claim 10, characterized in that, The first transistor is disposed in the transition region; in the photosensitive region, the second blocking sub-part overlaps with the second trace, and the width of the second blocking sub-part is greater than the width of the second trace.

12. The display panel according to claim 11, characterized in that, The first trace is arranged around the edge of the photosensitive area in the transition region, and the third shielding part overlaps with the first trace arranged at least partially around the edge of the photosensitive area.

13. The display panel according to claim 11, characterized in that, The second trace is curved, and the second shielding part corresponding to the second trace is also curved.

14. The display panel according to claim 10, characterized in that, The first transistor is disposed in the photosensitive area, the first blocking sub-part overlaps with the first transistor, the second blocking sub-part overlaps with the first trace, and the width of the second blocking sub-part is greater than the width of the first trace.

15. The display panel according to claim 1, characterized in that, At least a portion of the first blocking sub-part has a wavy or serrated edge, the second blocking sub-part has a wavy or serrated edge, and the edge of the third blocking sub-part near the photosensitive area has a wavy or serrated edge.

16. The display panel according to claim 1, characterized in that, The shape of the photosensitive area includes a circle or an ellipse, and the edge of the transition area near the second display area includes an ellipse.

17. The display panel according to claim 1, characterized in that, The light-transmitting hole does not overlap with the first shielding layer.

18. The display panel according to claim 1, characterized in that, The number of the first luminous pixels and the number of the second luminous pixels are the same in the same unit area.

19. A display panel, characterized in that, The display panel includes a first display area and a second display area adjacent to the first display area. The first display area includes a photosensitive area. The display panel includes: The substrate layer includes a first shielding layer disposed corresponding to the first display area; A light-emitting layer, disposed on one side of the substrate layer, includes: a first light-emitting pixel disposed in the first display area, and a second light-emitting pixel disposed in the second display area; The first shielding layer includes a first shielding sub-part corresponding to at least one first light-emitting pixel, a second shielding sub-part connecting two adjacent first shielding sub-parts, and a third shielding sub-part surrounding the first shielding sub-part and the second shielding sub-part. The third shielding sub-part is also connected to the first shielding sub-part adjacent to the third shielding sub-part through the second shielding sub-part. The light-emitting layer further includes: The first electrode is disposed on one side of the substrate layer; A light-emitting material layer is disposed on the side of the first electrode away from the substrate layer; The second electrode is disposed on the side of the light-emitting material layer away from the substrate layer; In the first display area, the second electrode is provided with a light-transmitting hole corresponding to the area surrounded by the adjacent first and second blocking sub-parts, and / or the area surrounded by the adjacent first, second, and third blocking sub-parts.

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