Terminal equipment, display device, display panel and manufacturing method thereof

Abstract

A terminal device, a display apparatus, a display panel, and a method for manufacturing the same are disclosed. The display panel includes: a driving backplane (BP) having a display area (AA) including a light-transmitting display area (AC) and a main display area (AM), the light-transmitting display area (AC) including a light-transmitting area (ACP); a pixel definition layer (PDL) including an opening (20) containing a first opening (201) and a second opening (202); a plurality of light-emitting devices (10) defined within the opening (20); and a color filter layer (CF). The opening spacing between two adjacent first openings (201) satisfies a specific relationship, thereby improving light transmittance while preventing color crosstalk.

Description

Technical Field

[0001] This disclosure relates to the field of display technology, and more specifically, to a terminal device, a display apparatus, a display panel, and a method for manufacturing the display panel. Background Technology

[0002] Currently, display panels are widely used in various electronic devices for displaying images. Meanwhile, for mobile phones and other terminal devices, under-display camera technology is gaining widespread attention in order to increase screen-to-body ratio. However, existing under-display light-transmitting display areas are prone to color bleeding, leading to abnormal images.

[0003] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this disclosure, and therefore may include information that does not constitute prior art known to those skilled in the art. Summary of the Invention

[0004] The purpose of this disclosure is to provide a terminal device, a display device, a display panel, and a method for manufacturing the display panel.

[0005] According to one aspect of this disclosure, a display panel is provided, comprising:

[0006] A drive back panel has a display area, which includes a light-transmitting display area and a main display area, wherein the light-transmitting display area includes a light-transmitting area;

[0007] A pixel definition layer is disposed on one side of the driving back panel and includes multiple openings, including a first opening located in the light-transmitting area and a second opening located in the main display area;

[0008] Multiple light-emitting devices are defined one-to-one within each of the openings, and at least two of the light-emitting devices emit different colors;

[0009] A color filter layer is disposed on the side of the pixel definition layer opposite to the driving backplate, and includes a spacer portion and a plurality of filter portions separated by the spacer portion; in a direction perpendicular to the driving backplate, the openings are arranged one-to-one with the filter portions, the spacer portion corresponding to the light-transmitting area is a transparent structure, and the spacer portion corresponding to the main display area is a light-shielding structure; the color of the filter portion is the same as the light-emitting color of the light-emitting device in its corresponding opening;

[0010] The distance between the edges of two adjacent openings on the surface of the pixel definition layer away from the driving backplate is the opening interval; the opening interval between two adjacent first openings satisfies the following relationship:

[0011]

[0012] Wherein, S1 is the opening interval between two adjacent first openings;

[0013] D1 is the maximum width of the edge of the light-emitting device within the first opening in the direction parallel to the pixel definition layer;

[0014] M1 is the thickness of the region of the pixel definition layer corresponding to the light-transmitting area;

[0015] H1 is the distance between the surface of the pixel definition layer corresponding to the light-transmitting area away from the driving backplate and the surface of the color filter layer near the driving backplate;

[0016] The angle between the sidewall of the first opening and the side of the driving backplate where the pixel definition layer is located, and

[0017] In one exemplary embodiment of this disclosure, the light-emitting device includes:

[0018] The first electrode is located on the same side of the driving backplate as the pixel definition layer, and the edge of the first electrode is covered by the pixel definition layer.

[0019] A light-emitting functional layer is disposed on the surface of the first electrode opposite to the driving backplate;

[0020] The second electrode covers the light-emitting functional layer;

[0021] The maximum width of the edge of the light-emitting device within the first opening in the direction parallel to the pixel definition layer is: the maximum width of the edge of the first opening on the surface of the pixel definition layer near the driving backplate in the direction parallel to the pixel definition layer.

[0022] In one exemplary embodiment of this disclosure, the thickness of the pixel definition layer in the region between two adjacent first openings is greater than the thickness of the region between two adjacent second openings.

[0023] In one exemplary embodiment of this disclosure, the display panel further includes:

[0024] The support pillar is located on the surface of the pixel definition layer opposite to the driving backplate, corresponding to the area outside the light-transmitting area.

[0025] In one exemplary embodiment of this disclosure, the thickness of the pixel definition layer in the region between two adjacent first openings is approximately equal to the sum of the thickness of the pixel definition layer in the region between two adjacent second openings and the thickness of the support column.

[0026] In one exemplary embodiment of this disclosure, the display panel further includes:

[0027] An encapsulation layer covers each of the light-emitting devices, wherein the thickness of the encapsulation layer corresponding to the light-transmitting area is less than the thickness corresponding to the main display area;

[0028] The color filter layer is disposed on the surface of the encapsulation layer opposite to the drive backplate, and is recessed in the area corresponding to the light-transmitting area.

[0029] In one exemplary embodiment of this disclosure, the encapsulation layer includes:

[0030] A first inorganic layer covers each of the light-emitting devices;

[0031] An organic layer is disposed on the surface of the first inorganic layer opposite to the driving backplate; the thickness of the organic layer corresponding to the light-transmitting area is less than the thickness corresponding to the main display area.

[0032] A second inorganic layer covers the organic layer and is recessed in the region of the organic layer corresponding to the light-transmitting area;

[0033] The color filter layer is disposed on the surface of the second inorganic layer away from the drive backplate, and is recessed in the area corresponding to the light-transmitting area.

[0034] In one exemplary embodiment of this disclosure, the display panel further includes:

[0035] A first inorganic layer covers each of the light-emitting devices;

[0036] An organic layer is disposed on the surface of the first inorganic layer opposite to the drive backplate; the thickness of the organic layer is 6μm-12μm.

[0037] A second inorganic layer covers the organic layer;

[0038] The color filter layer is disposed on the side of the second inorganic layer opposite to the drive backplate.

[0039] In one exemplary embodiment of this disclosure, the maximum width of the orthographic projection of at least one of the first openings on the drive backplate is less than the maximum width of the orthographic projection of at least one of the second openings on the drive backplate.

[0040] In one exemplary embodiment of this disclosure, the light-transmitting display area further includes a transition area surrounding the light-transmitting area; the intervals corresponding to the transition area are light-shielding structures, and the thickness of each interval corresponding to the transition area decreases towards the light-transmitting area.

[0041] In one exemplary embodiment of this disclosure, the transition area includes a plurality of sub-regions sequentially surrounding the light-transmitting area. The thickness of the spacing portions corresponding to the same sub-region is the same, and the thickness of the spacing portions corresponding to different sub-regions decreases towards the light-transmitting area. The thickness of the spacing portion corresponding to the sub-region farthest from the light-transmitting area is approximately equal to the thickness of the spacing portion corresponding to the main display area.

[0042] In one exemplary embodiment of this disclosure, the color filter layer includes:

[0043] A light-shielding layer is disposed on the side of the pixel definition layer opposite to the driving backplate; the orthographic projection of the light-shielding layer on the driving backplate is located outside the light-transmitting area, and the light-shielding layer includes a plurality of light-shielding intervals distributed at intervals.

[0044] A filter layer is disposed in the same layer as the light-shielding layer and includes multiple arrayed filter sections. The orthographic projection of each filter section on the drive back plate is distributed at least in the light-transmitting area and the main display area. The filter section corresponding to the main display area is separated by the light-shielding interval.

[0045] A transparent protective layer covers the light-shielding layer and the light-filtering layer, and the transparent protective layer fills the transparent gap between the light-filtering portions corresponding to the light-transmitting areas.

[0046] In one exemplary embodiment of this disclosure, the display panel further includes:

[0047] A touch layer is disposed between the color filter layer and the pixel definition layer, and the touch layer has a cutout corresponding to the area of ​​the light-transmitting region.

[0048] According to one aspect of this disclosure, a method for manufacturing a display panel is provided, comprising:

[0049] A driving backplate with a display area is formed, the display area including a light-transmitting display area and a main display area, the light-transmitting display area including a light-transmitting area;

[0050] A plurality of light-emitting devices and a pixel definition layer including a plurality of openings are formed on one side of the driving back plate. The openings include a first opening located in the light-transmitting area and a second opening located in the main display area. The light-emitting devices are defined in each of the openings in a corresponding manner.

[0051] A color filter layer is formed on the side of the pixel definition layer opposite to the driving backplate. The color filter layer includes a spacer portion and a plurality of filter portions separated by the spacer portion. In the direction perpendicular to the driving backplate, the area of ​​the spacer portion corresponding to the light-transmitting area is a transparent structure, and the area of ​​the spacer portion corresponding to the main display area is a light-shielding structure. The color of the filter portion is the same as the light-emitting color of the light-emitting device in its corresponding opening.

[0052] The distance between the edges of two adjacent openings on the surface of the pixel definition layer away from the driving backplate is the opening interval; the opening interval between two adjacent first openings satisfies the following relationship:

[0053]

[0054] Wherein, S1 is the opening interval between two adjacent first openings;

[0055] D1 is the maximum width of the edge of the light-emitting device within the first opening in the direction parallel to the pixel definition layer;

[0056] M1 is the thickness of the region of the pixel definition layer corresponding to the light-transmitting area;

[0057] H1 is the distance between the surface of the pixel definition layer corresponding to the light-transmitting area away from the driving backplate and the surface of the color filter layer near the driving backplate;

[0058] The angle between the sidewall of the first opening and the side of the driving backplate where the pixel definition layer is located, and

[0059] According to one aspect of this disclosure, a display device is provided, comprising the display panel described in any of the preceding claims.

[0060] According to one aspect of this disclosure, a terminal device is provided, comprising:

[0061] The display device described in any of the above claims;

[0062] The camera device is located on the side of the drive backplate away from the pixel definition layer and corresponds to the light-transmitting area, and can capture images through the light-transmitting area.

[0063] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0064] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure. It is obvious that the drawings described below are merely some embodiments of this disclosure, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort.

[0065] Figure 1 This is a top view of one embodiment of the display panel of this disclosure.

[0066] Figure 2 This is a partial enlarged view of one embodiment of the display panel of this disclosure.

[0067] Figure 3 This is a schematic diagram of one embodiment of the display panel of this disclosure.

[0068] Figure 4 This is a schematic diagram of a second embodiment of the display panel of this disclosure.

[0069] Figure 5 This is a schematic diagram of a third embodiment of the display panel of this disclosure.

[0070] Figure 6 This is a schematic diagram of a fourth embodiment of the display panel of this disclosure.

[0071] Figure 7 This is a schematic diagram of a fifth embodiment of the display panel of this disclosure.

[0072] Figure 8 This is a schematic diagram of a sixth embodiment of the display panel of this disclosure.

[0073] Figure 9 This is a schematic diagram of a seventh embodiment of the display panel of this disclosure.

[0074] Figure 10 This is a schematic diagram of the touch layer in one embodiment of the display panel of this disclosure.

[0075] Figure 11 This is a schematic diagram of an auxiliary filter layer in one embodiment of the display panel of this disclosure.

[0076] Figure 12 This is a top view of the auxiliary filter layer in one embodiment of the display panel of this disclosure.

[0077] Figure 13 This is a schematic diagram of an eighth embodiment of the display panel of this disclosure. Detailed Implementation

[0078] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, they are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and therefore detailed descriptions of them will be omitted. Furthermore, the drawings are merely illustrative of this disclosure and are not necessarily drawn to scale.

[0079] Although relative terms such as "up" and "down" are used in this specification to describe the relative relationship of one component of an icon to another, these terms are used only for convenience, such as according to the orientation of the examples shown in the accompanying drawings. It is understood that if the device of the icon is flipped upside down, the component described as "up" will become the component described as "down." When a structure is "up" of another structure, it may mean that the structure is integrally formed on the other structure, or that the structure is "directly" mounted on the other structure, or that the structure is "indirectly" mounted on the other structure through another structure.

[0080] The terms “a,” “one,” “the,” “the,” and “at least one” are used to indicate the presence of one or more elements / components / etc.; the terms “including” and “having” are used to indicate an open-ended inclusion and to mean that there may be other elements / components / etc. in addition to the listed elements / components / etc.; the terms “first,” “second,” and “third,” etc., are used only as markers and are not a limitation on the number of objects.

[0081] Because there are upper limits to the precision of manufacturing processes, the limitations on shapes and dimensions in this document, such as circles and trapezoids, are not limited to perfectly flawless circles and trapezoids. The outline of a circle can also be a wavy line or a broken line, and the waist of a trapezoid can be a curve or a broken line, etc. However, as long as they are within the allowable error range of manufacturing precision, they should be regarded as having the shape of a circle or trapezoid. At the same time, the concepts of plane and perpendicularity mentioned in this disclosure are all within the allowable range of manufacturing precision.

[0082] This disclosure provides a display panel, such as... Figures 1-3 As shown, the display panel includes a driving backplane (BP), a pixel definition layer (PDL), multiple light-emitting devices (OLEDs), and a color filter layer (CF), wherein:

[0083] The drive backplane BP has a display area AA, which includes a light-transmitting display area AC and a main display area AM. The light-transmitting display area AC includes a light-transmitting area ACP.

[0084] The pixel definition layer (PDL) is located on one side of the driving backplane (BP) and includes multiple openings 20. The openings 20 include a first opening 201 located in the light-transmitting area (ACP) and a second opening 202 located in the main display area (AM).

[0085] Multiple light-emitting devices 10 are correspondingly defined within each opening 20, and at least two light-emitting devices 10 emit different colors;

[0086] The color filter layer (CF) is located on the side of the pixel definition layer (PDL) facing away from the driving backplate (BP), and includes a spacer 30 and a plurality of filter sections 40 separated by the spacer 30. In the direction perpendicular to the driving backplate (BP), the openings 20 and the filter sections 40 are arranged in a one-to-one correspondence. The area of ​​the spacer 30 corresponding to the light-transmitting area (ACP) is a transparent structure (transparent spacer 30a), and the area of ​​the spacer 30 corresponding to the main display area (AM) is a light-shielding structure (light-shielding spacer 30b). The color of the filter section 40 is the same as the light-emitting color of the light-emitting device 10 in the corresponding opening 20.

[0087] The distance between the edges of two adjacent first openings 201 on the surface of the pixel definition layer PDL away from the driving backplane BP is the opening interval, which satisfies the following relationship:

[0088]

[0089] Wherein, S1 is the opening interval between two adjacent first openings 201;

[0090] D1 is the maximum width of the edge of the light-emitting device 10 within the first opening 201 in the direction parallel to the pixel definition layer PDL.

[0091] M1 is the thickness of the pixel definition layer PDL corresponding to the light-transmitting area ACP;

[0092] H1 is the distance between the surface of the pixel definition layer PDL corresponding to the light-transmitting area ACP away from the driving backplate BP and the surface of the color filter layer CF close to the driving backplate BP.

[0093] The angle between the sidewall of the first opening 201 and the side of the pixel definition layer PDL on the driving backplate BP is provided, and

[0094] The display panel of this embodiment can capture images through the light-transmitting display area AC using a camera device; the light-emitting devices 10 of the light-transmitting display area AC and the main display area AM can emit light to display images, thereby realizing under-screen imaging. Since the spacer portion 30 corresponding to the light-transmitting area AC is made transparent, the light transmittance of the light-transmitting display area AC can be increased, which is beneficial to improving the quality of the captured image. Furthermore, the spacer portion 30 of the light-shielding structure can block light emission from areas where the light emission ranges of adjacent light-emitting devices 10 overlap, thereby preventing color bleeding.

[0095] Furthermore, based on the relationship of limiting the opening spacing, the light emitted by the light-emitting device 10 in the adjacent first opening 201 does not overlap in the transparent spacing 30, so that even if the transparent spacing 30 can emit light, there is no color crossing phenomenon. In other words, for the transparent area, the light transmittance can be improved while preventing color crossing.

[0096] The following section uses an organic electroluminescent display panel as an example to explain each part in detail:

[0097] The driving backplane BP has a driving circuit for driving each light-emitting device 10 to emit light. In some embodiments of this disclosure, the driving backplane BP may include a substrate and a driving circuit layer. The substrate is a flat plate structure, and its material may be a hard material such as glass or a soft material such as polyimide. The driving circuit layer may be disposed on one side of the substrate and includes the driving circuit. The display panel may be divided into at least a display area AA and a peripheral area W located outside the display area AA. Correspondingly, the driving circuit layer may include pixel circuits located in the display area AA and peripheral circuits located in the peripheral area W. The pixel circuits may be 7T1C, 7T2C, 6T1C, or 6T2C, etc., as long as they can drive the light-emitting devices 10 to emit light, and their structure is not specifically limited here. The number of pixel circuits is the same as the number of light-emitting devices 10, and they are connected one-to-one with each light-emitting device 10 so as to control the light emission of each light-emitting device 10 respectively. Wherein, nTmC indicates that a pixel circuit includes n transistors (represented by the letter "T") and m capacitors (represented by the letter "C"). Of course, in other embodiments of this disclosure, the same pixel circuit may also drive multiple light-emitting devices 10.

[0098] The peripheral circuit is located in the peripheral region W and is connected to the pixel circuit. It is used to input driving signals to the pixel circuit so as to control the light-emitting device 10 to emit light. The peripheral circuit may include a gate driving circuit and a light-emitting control circuit. Of course, it may also include other circuits. The specific structure of the peripheral circuit is not specifically limited here.

[0099] The aforementioned driving circuit layer may include multiple thin-film transistors and capacitors. The thin-film transistors may be top-gate or bottom-gate type thin-film transistors. Each thin-film transistor may include an active layer, a gate, a source, and a drain. The active layers of each thin-film transistor are arranged in the same layer, the gates are arranged in the same layer, and the source and drain are arranged in the same layer to simplify the process.

[0100] Taking a top-gate thin-film transistor as an example, the driving backplane BP includes a substrate, an active layer, a first gate insulating layer, a gate, a second gate insulating layer, an interlayer dielectric layer, a source / drain layer, and a planarization layer. The active layer is disposed on one side of the substrate, and the first gate insulating layer covers the active layer and the substrate. The gate is disposed on the surface of the first gate insulating layer away from the substrate and directly opposite the active layer. The second gate insulating layer covers the gate and the first gate insulating layer. The interlayer dielectric layer covers the second gate insulating layer. The source / drain layer is disposed on the surface of the interlayer dielectric layer away from the substrate and includes a source and a drain, which are connected to the two ends of the active layer through contact holes. The planarization layer covers the source / drain layer and the interlayer dielectric layer. Of course, the driving circuit layer may also include other film layers, as long as they can drive the light-emitting device 10 to emit light, which will not be described in detail here.

[0101] like Figure 1 each Figure 3 As shown, the display area AA of the driving back panel BP may include a light-transmitting display area AC and a main display area AM. The light-transmitting display area AC may include a light-transmitting area ACP. Both the main display area AM and the light-transmitting display area AC are provided with pixel circuits that can drive the light-emitting device 10 to emit light so as to display images. The light-transmitting display area AC may include a light-transmitting area ACP. The camera device can capture images through the light-transmitting display area AC.

[0102] like Figure 3 As shown, the range of each light-emitting device 10 can be defined by the pixel definition layer (PDL). The pixel definition layer (PDL) can be disposed on one side of the driving backplane (BP). For example, the pixel definition layer (PDL) can be disposed on the surface of the driving circuit layer away from the substrate. At the same time, the pixel definition layer (PDL) has a plurality of openings 20 extending through the pixel definition layer (PDL) along the thickness direction. The openings 20 can be distributed in the light-transmitting display area (AC) and the main display area (AM), and openings 20 are also distributed in the light-transmitting area (ACP). The openings 20 distributed in the light-transmitting area (ACP) can be defined as the first opening 201, and the openings 20 distributed in the main display area (AM) can be defined as the second opening 202. That is, each opening 20 can include the first opening 201 and the second opening 202.

[0103] The shape of the opening 20, i.e. the shape of its edge, can be circular, elliptical, or polygonal, etc., without any special limitation. Furthermore, the sidewall of the opening 20 can contract towards the driving backplate BP, meaning the edge of the opening 20 near the driving backplate BP is smaller than the edge of the opening 20 away from the driving backplate BP, resulting in a certain angle between the sidewall of the opening 20 and the surface of the driving backplate BP near the pixel definition layer PDL. This angle can be acute, or it can be a right angle, meaning the opening 20 can also be a straight hole structure.

[0104] In some embodiments of this disclosure, the first opening 201 corresponding to the light-transmitting area ACP can be circular in shape to avoid sharp edges on the sidewalls and edges of the first opening 201. This avoids problems such as diffraction of light passing through the light-transmitting area ACP, which would affect the imaging quality of the camera device, thereby improving the imaging quality of the under-display camera. Of course, the second opening 202 can also be circular in shape.

[0105] The light-emitting device 10 can be disposed in each opening 20, and one light-emitting device 10 is disposed in each opening 20. Thus, the light-emitting range of the light-emitting device 10 can be defined by the opening 20. The surface of each light-emitting device 10 facing away from the driving backplate BP is located on the side of the pixel definition layer PDL facing away from the driving backplate BP, close to the driving backplate BP. That is, the light-emitting device 10 does not extend out of the opening 20 where it is located.

[0106] In some embodiments of this disclosure, the light-emitting device 10 may be an organic light-emitting diode, such as... Figure 3 As shown, each light-emitting device 10 may include a first electrode 101, a light-emitting functional layer 102, and a second electrode 103 sequentially stacked along a direction away from the driving backplate BP, wherein:

[0107] The first electrode 101 can be disposed on the same side of the driving backplane BP as the pixel definition layer (PDL). For example, the first electrode 101 can be disposed on the surface of the planarization layer facing away from the substrate. Each opening 20 can expose one first electrode 101, and the edge of the opening 20 near the driving backplane BP can be located within the edge of the first electrode 101, thereby covering the edge of the first electrode 101 and exposing a portion of the first electrode 101. At the same time, the first electrode 101 can be connected to the drain or source of a thin-film transistor of a pixel circuit through a contact hole in the driving backplane BP, so as to receive signals emitted by the pixel circuit.

[0108] The light-emitting functional layer 102 is located within the opening 20 and on the surface of the first electrode 101 facing away from the driving backplate BP. The light-emitting functional layer 102 may include a hole injection layer, a hole transport layer, a light-emitting material layer, an electron transport layer, and an electron injection layer stacked sequentially along the direction facing away from the driving backplate BP. The light-emitting functional layers 102 of each light-emitting device 10 are independently spaced and emit light independently.

[0109] At least a portion of the second electrode 103 is located within the opening 20 and covers the light-emitting functional layer 102. It can be connected to the power signal terminal of the peripheral circuit and can receive power signals. When displaying an image, a data signal can be applied to the first electrode 101 through the pixel circuit, and a power signal can be applied to the second electrode 103 through the power signal terminal, thereby causing the light-emitting functional layer 102 to emit light. The specific principle of organic electroluminescence is not detailed here. In some embodiments of this disclosure, each light-emitting device 10 can share the second electrode 103. The second electrode 103 can be a continuous film layer that simultaneously covers the light-emitting functional layer 102 within each opening 20 and the surface of the pixel definition layer PDL facing away from the driving backplane BP. The second electrode 103 is recessed at the opening 20, thereby contacting the light-emitting functional layer 102 within the opening 20. Simultaneously, the second electrode 103 can extend to the peripheral region W and connect to the peripheral circuit. The portion of the second electrode 103 located within each opening 20 can form a light-emitting device 10 with the light-emitting functional layer 102 and the first electrode 101 within the opening 20.

[0110] Each light-emitting device 10 can be defined by the multiple openings 20 described above. The boundary of any light-emitting device 10 is the edge of its corresponding opening 20 on the surface of the pixel definition layer PDL near the driving backplane BP. Of course, the boundary of the light-emitting device 10 can also be the edge of the light-emitting functional layer 102 within the opening 20.

[0111] In some embodiments of this disclosure, the light-emitting device 10 may include a first light-emitting device, a second light-emitting device, and a third light-emitting device that emit different colors of light. For example, the first light-emitting device emits red light, the second light-emitting device emits green light, and the third light-emitting device emits blue light.

[0112] Furthermore, each light-emitting device 10 can be divided into multiple pixels, and each pixel can include multiple light-emitting devices 10 with different emitting colors. For example, a pixel can include a first light-emitting device that emits red light, a second light-emitting device that emits green light, and a third light-emitting device that emits blue light. Light-emitting devices of any color within the same pixel can be one or more. The shape and size of the openings 20 corresponding to different colored light-emitting devices can be the same or different. For example, the area of ​​the orthographic projection of the opening 20 corresponding to the first light-emitting device onto the driving backplate 1 can be larger than the area of ​​the orthographic projection of the opening 20 corresponding to the second light-emitting device onto the driving backplate 1.

[0113] Two adjacent pixels can share a portion of the light-emitting device 10, achieving color borrowing through methods such as subpixel rendering (SPR) to emit light. This improves resolution without increasing the number of light-emitting devices. The specific principle will not be explained in detail here. Of course, the light-emitting devices 10 of two adjacent pixels can also be set independently without sharing, thus allowing them to emit light independently.

[0114] In some embodiments of this disclosure, such as Figure 3 As shown, the display panel may also include an encapsulation layer 50, which covers each light-emitting device 10 to prevent external water and oxygen from corroding the light-emitting devices 10, thereby providing protection. The color filter layer CF may be disposed on the side of the encapsulation layer 50 opposite to the driving backplate BP.

[0115] In some embodiments of this disclosure, encapsulation can be achieved using thin-film encapsulation (TFE). Specifically, the encapsulation layer 50 may include a first inorganic layer 501, an organic layer 502, and a second inorganic layer 503, wherein:

[0116] The first inorganic layer 501 covers each light-emitting device 10. The material of the first inorganic layer 501 may include inorganic insulating materials such as silicon nitride and silicon oxide. The first inorganic layer 501 may be recessed at the opening 20 along with the second electrode 103.

[0117] An organic layer 502 can be formed on the surface of the first inorganic layer 501 facing away from the drive backplate BP using methods such as inkjet printing. The boundary of the organic layer 502 can be defined inside the boundary of the first inorganic layer 501 by a barrier dam located in the peripheral region W. The organic layer 502 can be used to release interlayer stress and act as a buffer. The organic layer 502 can fill the depressions in the first inorganic layer 501 at the opening 20. The surface of the organic layer 502 facing away from the drive backplate BP can be planar, thereby achieving planarization. The material of the organic layer 502 may include acrylic-based materials.

[0118] The second inorganic layer 503 covers the organic layer 502 and the first inorganic layer 501 that is not covered by the organic layer 502. The organic layer 502 can be blocked by the second inorganic layer 503 and the first inorganic layer 501.

[0119] like Figure 3 As shown, the color filter layer CF can be disposed on the side of the pixel definition layer PDL away from the driving backplane BP. For example, the color filter layer CF can be disposed on the side of the encapsulation layer 50 away from the driving backplane BP. Simultaneously, the color filter layer CF has a spacer portion 30 and a plurality of filter portions 40 separated by the spacer portion 30. In a direction perpendicular to the driving backplane BP, the filter portions 40 can be correspondingly arranged with each opening 20. Each opening 20 is located within the orthogonal projection of a filter portion 40 onto the pixel definition layer PDL, so that the light emitted by the light-emitting device 10 within each opening 20 can illuminate the corresponding filter portion 40. The filter portion 40 can be used to transmit monochromatic light, for example, red light, blue light, green light, etc. The color emitted by any light-emitting device 10 is the same as the color of its corresponding filter portion 40 to ensure normal light output.

[0120] Meanwhile, the filter section 40 can block some external light from entering the display panel, thereby preventing the display effect from being affected by the reflection of external light by the second electrode 103, the first electrode 101, or the circuit in the drive backplane BP. In other words, the color filter layer CF can be used to replace the circular polarizer used to reduce reflection. Since the circular polarizer is usually quite thick, using the color filter layer CF to reduce reflection is beneficial to reducing the thickness of the display panel.

[0121] The area of ​​the spacer 30 corresponding to the light-transmitting area ACP can be made transparent, and this spacer 30 is called spacer 30a. This improves the light transmittance of the light-transmitting area ACP. The aforementioned transparent structure can mean that its light transmittance is not less than 80%, for example, 85%, 90%, 99%, etc., in order to improve the imaging quality of the camera device. At the same time, the area of ​​the spacer 30 corresponding to the main display area AM can be made light-shielding, and this spacer 30 is called spacer 30b. It is used to block external light, and can improve the effect of reducing reflection, at least in the area outside the light-transmitting area ACP.

[0122] In some embodiments of this disclosure, the color filter layer CF may include a light-shielding layer CFB, a light-filtering layer CFT, and a transparent protective layer CFO, wherein:

[0123] The light-shielding layer CFB can be disposed on the side of the pixel definition layer PDL away from the driving backplate BP; the orthographic projection of the light-shielding layer CFB on the driving backplate BP is located outside the light-transmitting area ACP, and the light-shielding layer CFB can include a plurality of light-shielding spacing portions 30 spaced apart; the material of the light-shielding layer CFB can be black resin material, of course, other materials can also be used, as long as they can block light.

[0124] The light-filtering layer CFT and the light-shielding layer CFB are disposed on the same layer. For example, the light-filtering layer CFT and the light-shielding layer CFB can be disposed on the same substrate, or the light-filtering layer CFT and the light-shielding layer CFB can be disposed on the surface of the encapsulation layer 50 opposite to the driving backplane BP. No special limitation is made here. The light-filtering layer CFT may include a plurality of arrayed filter portions 40, and the orthographic projection of each filter portion 40 on the driving backplane BP is distributed at least in the light-transmitting area ACP and the main display area AM. The filter portions 40 corresponding to the main display area AM are separated by light-shielding spacing portions 30, while the filter portions 40 corresponding to the light-transmitting area ACP are hollowed out between adjacent filter portions 40.

[0125] The transparent protective layer CFO can cover the light-shielding layer CFB and the filter layer CFT, and fill the space between the filter portions 40 corresponding to the light-transmitting area ACP. The transparent protective layer CFO filling this space is the transparent spacer portion 30a, so that the filter portions 40 corresponding to the light-transmitting area ACP are separated by the transparent spacer portion 30a. Correspondingly, the spacer portion 30 of the color filter layer CF includes a transparent spacer portion 30a and a light-shielding spacer portion 30b. Of course, the transparent protective layer CFO also covers the light-shielding spacer portion 30b. The material of the transparent protective layer CFO can be the same as the material of the organic layer 502, so that their refractive indices are the same or approximately the same (the difference between them is within a certain range). For example, the materials of the transparent protective layer CFO and the organic layer 502 can both include acrylic materials.

[0126] In some embodiments of this disclosure, such as Figure 3 As shown, the display panel may further include a touch layer TP, which may be disposed between the color filter layer CF and the pixel definition layer PDL. For example, the touch layer TP may be disposed between the encapsulation layer 50 and the color filter layer CF. The touch layer TP may adopt a self-capacitive or mutual-capacitive touch structure, and its specific structure is not specifically limited here, as long as it can realize the touch function. Of course, the touch layer TP may also be disposed on the side of the color filter layer CF away from the driving backplane BP, and its specific position and process are not specifically limited here. Alternatively, the display panel of this disclosure may not have a touch layer TP, and the color filter layer CF may be directly disposed on the surface of the encapsulation layer 50 away from the driving backplane BP.

[0127] In some embodiments of this disclosure, if a touch layer TP is provided between the color filter layer CF and the pixel definition layer PDL of the display panel, or on the side of the color filter layer CF away from the driving backplate BP, the touch layer TP can be hollowed out in the area corresponding to the light-transmitting area ACP, thereby avoiding the touch layer TP from blocking the light-transmitting area ACP and improving the light transmittance.

[0128] In some embodiments of this disclosure, the touch layer TP may include a buffer layer, a first conductive layer, an isolation layer, a second conductive layer, and an insulating layer, wherein:

[0129] A buffer layer may be disposed on the surface of the encapsulation layer 50 facing away from the drive backplane BP. The material of the buffer layer may be an inorganic insulating material such as silicon oxide or silicon nitride. A first conductive layer may be disposed on the surface of the buffer layer facing away from the drive backplane BP. An isolation layer covers the first conductive layer. The isolation layer is made of an insulating material and has multiple vias exposing a portion of the first conductive layer. A second conductive layer may be disposed on the surface of the isolation layer facing away from the drive backplane BP and is connected to the first conductive layer through vias. An insulating layer may cover the second conductive layer and the isolation layer. The insulating layer may be made of optical adhesive or an insulating material such as acrylic.

[0130] The first conductive layer may include a plurality of spaced-apart first connecting bridges, which may extend along a first direction. Each via exposes a portion of a first connecting bridge, and the same first connecting bridge may be exposed by two vias, which expose different areas of the first connecting bridge, thereby connecting two vias through one first connecting bridge. Of course, the same first connecting bridge may also be exposed by multiple vias.

[0131] The second conductive layer may include a second connecting bridge and a plurality of mutually insulated first touch electrodes and a plurality of second touch electrodes. Two adjacent first touch electrodes in a first direction may be connected to the same first connecting bridge via different vias. Two adjacent second touch electrodes in a second direction may be connected via a second connecting bridge extending along the second direction. The first and second directions are mutually perpendicular. The touch position can be determined by sensing the change in capacitance between the first and second touch electrodes.

[0132] Both the first and second conductive layers have a mesh structure, which improves light transmittance while enabling touch functionality.

[0133] It should be noted that, as Figure 10 As shown, the perforation of the touch layer TP corresponding to the light-transmitting area ACP can mean that the first and second conductive layers form through-holes in the area corresponding to the light-transmitting area ACP, while the buffer layer and insulating layer can be transparent continuous films. Alternatively, the buffer layer and insulating layer can also be perforated in the area corresponding to ACP. The through-hole can be a mesh-like structure of the first and second conductive layers; that is, the mesh lines in the mesh-like structure do not need to be broken in the area corresponding to the light-transmitting area ACP; or, the mesh-like structure can be broken in the area passing through the light-transmitting area ACP to form a through-hole; the specific choice depends on the size of the light-transmitting area ACP and the mesh.

[0134] The following is a detailed description of the solution disclosed in this paper to improve the color bleeding problem in the display panel:

[0135] The inventors discovered that for any light-emitting device 10, the light emitted by it illuminates the color filter layer CF under the restriction of the opening 20. The illumination range covers the filter portion 40 corresponding to the light-emitting device 10, and the boundary of the illumination range is located in the interval portion 30 adjacent to the filter portion 40. The illumination ranges of two adjacent light-emitting devices 10 on the color filter layer CF overlap. If the light emitted by two adjacent light-emitting devices 10 are different, color crosstalk will occur. However, for the light-shielding structure interval portion 30, it can block the light after color crosstalk from escaping, so it will not affect the display effect. However, the transparent structure interval portion 30 cannot block the light after color crosstalk, causing the image displayed on the display panel corresponding to the light-transmitting area ACP to show color crosstalk.

[0136] Based on the above analysis, in order to improve the color bleeding problem of the ACP in the light-transmitting area, a solution is proposed based on the display panel mentioned above. Specifically:

[0137] The distance between the edge of the light-emitting device 10 within any opening 20 and the edge of its illumination range on the color filter layer CF, i.e., the range by which the light emitted by the light-emitting device 10 diffuses outward from its edge when it reaches the color filter layer CF, is called the diffusion range. This diffusion range satisfies the following relationship:

[0138]

[0139] Where Y is the distance between the edge of the light-emitting device 10 in any opening 20 and the edge of its illumination range on the color filter layer CF.

[0140] D is the maximum width of the edge of the light-emitting device 10 within any opening 20 in a direction parallel to the pixel definition layer PDL. Further, this maximum width can be defined as: the maximum width of the edge of any opening 20 on the surface of the pixel definition layer PDL near the driving backplate BP in a direction parallel to the pixel definition layer PDL. For example, if any opening 20 is a circular hole that contracts towards the driving backplate BP, then D is the diameter of the edge of the opening 20 near the driving backplate BP.

[0141] M is the thickness of the pixel definition layer (PDL);

[0142] H is the distance between the surface of the pixel definition layer PDL away from the driving backplane BP and the surface of the color filter layer CF close to the driving backplane BP.

[0143] The angle between the sidewall of any opening 20 and the side of the drive backplate BP having a pixel definition layer PDL is provided, and

[0144] Based on the above relationship (1), the relationship for the diffusion range Y1 of the light-emitting device 10 corresponding to the light-transmitting region ACP can be obtained:

[0145]

[0146] Y1 is the distance between the edge of the light-emitting device 10 within the first opening 201 and the edge of its illumination range on the color filter layer CF.

[0147] D1 is the maximum width of the edge of the first opening 201 on the surface of the pixel definition layer (PDL) near the driving backplate (BP) in a direction parallel to the pixel definition layer (PDL). For example, if any opening 20 is a circular hole that shrinks towards the driving backplate (BP), then D1 is the diameter of the edge of the first opening 201 near the driving backplate (BP).

[0148] M1 is the thickness of the pixel definition layer PDL corresponding to the light-transmitting area ACP;

[0149] H1 is the distance between the pixel definition layer PDL, corresponding to the area of ​​the light-transmitting region ACP, away from the surface of the driving backplate BP, and the surface of the color filter layer CF near the driving backplate BP.

[0150] The angle between the sidewall of the first opening 201 and the side of the pixel definition layer PDL on the driving backplate BP is provided, and

[0151] Similarly, we can conclude that:

[0152]

[0153] Wherein, Y2 is the distance between the edge of the light-emitting device 10 within the second opening 202 and the edge of its illumination range on the color filter layer CF.

[0154] D2 is the maximum width of the edge of the second opening 202 on the surface of the pixel definition layer PDL near the driving back plate BP in a direction parallel to the pixel definition layer PDL. For example, if any opening 20 is a circular hole that shrinks towards the driving back plate BP, then D2 is the diameter of the edge of the second opening 202 near the driving back plate BP.

[0155] M2 is the thickness of the pixel definition layer (PDL) corresponding to the area of ​​the main display area (AM);

[0156] H2 is the distance between the surface of the pixel definition layer PDL corresponding to the area of ​​the main display area AM away from the driving backplate BP and the surface of the color filter layer CF close to the driving backplate BP.

[0157] The sidewall of the second opening 202 forms an angle with the side of the pixel definition layer (PDL) on the driving backplate BP, and

[0158] To improve color bleeding, the distance between the edges of two adjacent openings 20 on the surface of the pixel definition layer PDL away from the driving backplane BP can be defined as the opening interval, and the opening interval between the first openings 201 should satisfy the following relationship:

[0159] S1≥2Y1;(4)

[0160] Wherein, S1 is the opening interval of the first opening 201.

[0161] Through relation (2), that is This ensures that the illumination range of the light emitted by the light-emitting devices 10 in the two adjacent first openings 201 does not overlap on the color filter layer CF, that is, the diffusion range does not overlap, so that even if it is emitted from the transparent spacer 30, there will be no color bleeding.

[0162] Based on the above relationships (2) and (4), several implementation methods to improve the color mixing problem are listed below:

[0163] Implementation Method 1

[0164] like Figure 3 As shown, the color mixing problem can be improved by increasing the thickness of the pixel definition layer (PDL) of the light-transmitting area ACP. In this embodiment, the thickness of the PDL in the region between two adjacent first openings 201 can be greater than the thickness in the region between two adjacent second openings 202, that is, M1 > M2. In some examples, M1 can be twice M2, for example, M1 is 3 μm and M2 is 1.5 μm. Meanwhile, Therefore, color mixing can be avoided by increasing the local thickness of the pixel definition layer (PDL).

[0165] Implementation Method 2

[0166] like Figure 4 As shown, based on Embodiment 1, the display panel may further include support pillars PS, which can be disposed on the surface of the pixel definition layer PDL away from the driving backplate BP, corresponding to the area outside the light-transmitting area ACP. For example, support pillars PS can be disposed on the surface of the pixel definition layer PDL away from the driving backplate BP in the area of ​​the main display area AM. The thickness of the support pillars PS is N. The number of support pillars PS is not specifically limited here, and they can be used to support the mask used when forming the light-emitting functional layer 102. The edges of the support pillars PS are located inside the edges of the pixel definition layer PDL to avoid interfering with the light of the light-emitting device 10 within the second opening 202.

[0167] like Figure 4 As shown, the thickness of the pixel definition layer PDL in the region between two adjacent first openings 201 is approximately equal to the sum of the thickness of the pixel definition layer PDL in the region between two adjacent second openings 202 and the thickness of the support pillar PS. For example, M1 = M2 + N. Of course, due to manufacturing process errors, the thickness of the pixel definition layer PDL may not be uniform, and the thickness of different regions may differ. Therefore, within the allowable error range, M1 ≈ M2 + N is acceptable.

[0168] The support pillars (PS) can be made of the same material as the pixel definition layer (PDL), such as photoresist. Furthermore, a grayscale masking process can be used to simultaneously form the PDL and support pillars, each with regions of different thicknesses, instead of forming them separately, thus simplifying the process. Alternatively, the support pillars (PS) can be made of a different material than the PDL and formed after the PDL.

[0169] Implementation Method 3

[0170] like Figure 5 As shown, the thickness of the encapsulation layer 50 corresponding to the light-transmitting area ACP is less than the thickness corresponding to the main display area AM, causing the encapsulation layer 50 to be recessed towards the driving backplate BP in the area corresponding to the light-transmitting area ACP, thereby achieving local thinning. At the same time, the color filter layer CF is disposed on the surface of the encapsulation layer 50 away from the driving backplate BP, and is recessed in the area corresponding to the light-transmitting area ACP, thereby shortening the distance between the area of ​​the color filter layer CF corresponding to the light-transmitting area ACP and the pixel definition layer PDL, i.e., H1 < H2. According to the relationship (2) above, the purpose of avoiding color bleeding can be achieved by reducing H1.

[0171] like Figure 5 As shown, to achieve localized thinning of the encapsulation layer 50, the organic layer 502 can be locally thinned. For example, the thickness of the organic layer 502 corresponding to the light-transmitting area ACP can be made less than the thickness corresponding to the main display area AM, so that the organic layer 502 is recessed in the area corresponding to the light-transmitting area ACP relative to the area corresponding to the main display area AM, forming a recessed area 001. Correspondingly, the second inorganic layer 503 is recessed in the area of ​​the organic layer 502 corresponding to the light-transmitting area ACP, that is, it matches and adheres to the recessed area 001. At the same time, the color filter layer CF is disposed on the surface of the second inorganic layer 503 away from the driving backplate BP. Based on the morphology of the second inorganic layer 503, the color filter layer CF is recessed in the area corresponding to the light-transmitting area ACP, so that the distance between the area of ​​the color filter layer CF corresponding to the light-transmitting area ACP and the pixel definition layer PDL is closer than the distance between the area of ​​the color filter layer CF corresponding to the light-transmitting area ACP and the main display area AM.

[0172] Implementation Method 4

[0173] like Figure 6As shown, the thickness h of the organic layer 502 of the encapsulation layer 50 can be set to 6μm-12μm, for example, 6μm. Of course, it can also be 7μm, 8μm, 9μm, 10μm, 11μm, etc. While achieving planarization and reducing stress, excessive thickness is avoided. Therefore, by thinning the encapsulation layer 50, the distance H between the color filter layer CF and the pixel definition layer PDL can be shortened, thus preventing color bleeding. Simultaneously, the organic layer 502 has the same thickness corresponding to the light-transmitting area ACP and the main display area AM to ensure the flatness of the organic layer 502, which facilitates bonding with the color filter layer CF or other film layers that need to be stacked on the side of the encapsulation layer 50 away from the driving backplane BP. Therefore, H1 = H2, and the thickness of the organic layer 502 needs to be set as a whole.

[0174] It should be noted that the first inorganic layer 501 is recessed at the position corresponding to the opening 20, and the recessed area is filled by the organic layer 502. The thickness of the organic layer 502 in the area corresponding to the opening 20 and the area corresponding to the area outside the opening 20 are different. The thickness of the organic layer 502 in this article can refer to the thickness h of the organic layer 502 at the opening 20, or it can refer to the thickness of the organic layer 502 in the area outside the opening 20. However, in the same embodiment, the meaning of the thickness of the organic layer 502 is the same.

[0175] Implementation Method 5

[0176] like Figure 7 As shown, the maximum width of the orthographic projection of at least one first opening 201 onto the driving backplate BP is less than the maximum width of the orthographic projection of at least one second opening 202 onto the driving backplate BP, i.e., D1 < D2. For example: if all first openings 201 are the same size and all second openings 202 are the same size, then the maximum width of the orthographic projection of any first opening 201 onto the driving backplate BP is less than the maximum width of the orthographic projection of any second opening 202 onto the driving backplate BP; or, if different first openings 201 are different sizes and different second openings are different sizes, then at least the first opening 201 and the second opening 202 of the light-emitting device 10 with the same emitting color can satisfy D1 < D2.

[0177] at the same time, If both the first opening 201 and the second opening 202 are circular, then D1 and D2 are their diameters, respectively; if both the first opening 201 and the second opening 202 are elliptical, then D1 and D2 are their major axes, respectively. Therefore, color mixing can be avoided by ensuring that D1 < D2.

[0178] In other embodiments of this disclosure, the solutions in embodiments one to three described above can be combined, for example:

[0179] In implementation method six, such as Figure 8As shown, while M1 > M2, D1 < D2.

[0180] In some embodiments, while M1 > M2, the thickness of the organic layer 502 is set to 6 μm-12 μm. In some embodiments, while D1 < D2, the thickness of the organic layer 502 is set to 6 μm-12 μm.

[0181] In some embodiments, M1 > M2, D1 < D2, and the thickness of the organic layer 502 is set to 6 μm-12 μm. Of course, this is not limited to the embodiments listed above; for example, other embodiments may also be used. As long as it can be used to achieve S1≥2Y1, it is acceptable.

[0182] Based on the display panel described above, the inventors further discovered that if the light-transmitting display area AC only includes the light-transmitting area ACP, then the light transmittance of the spacing portion 30a corresponding to the light-transmitting area ACP and the spacing portion 30b corresponding to the main display area AM has a significant difference, which may result in a visible boundary between the two areas, affecting the display effect. Therefore, the inventors propose the following solution:

[0183] like Figure 1 and Figure 9 As shown, the light-transmitting display area AC can be further divided, including a transition area ACL surrounding the light-transmitting area ACP. The interval 30 corresponding to the transition area ACL is a light-shielding structure. This interval 30a and the interval 30b corresponding to the main display area AM can belong to the light-shielding layer CFB. That is, the light-shielding layer CFB can extend into the area within the light-transmitting display area AC outside the light-transmitting area ACP. Simultaneously, the thickness of each interval 30b corresponding to the transition area ACL decreases towards the light-transmitting area ACP. For the light-shielding interval 30b, its thickness directly affects its light-shielding effect. As the thickness decreases, the light-shielding effect weakens. This gradual change in the thickness of the interval 30b creates an interval 30 with a gradually changing light-shielding effect between the transparent interval 30a and the light-shielding interval 30b, which helps to eliminate the visible boundary between the light-transmitting area ACP and the main display area AM, improving the display effect.

[0184] The following is a detailed explanation of how the thickness of the spacer 30 is set:

[0185] Implementation Method Seven

[0186] like Figure 2 As shown, the transition zone ACL may include multiple sub-regions ACL1 sequentially surrounding the light-transmitting zone ACP, each sub-region ACL1 being a ring-shaped region. The width of any sub-region ACL1 along the distribution direction of each sub-region ACL1 is not less than the distance between two adjacent filter sections 40. The number of sub-regions ACL1 is not specifically limited here.

[0187] like Figure 9 As shown, the thickness of the spacing portions 30 corresponding to the same sub-region ACL1 is the same, while the thickness of the spacing portions 30 corresponding to different sub-regions ACL1 decreases towards the light-transmitting area ACP. Simultaneously, the thickness of the spacing portion 30 corresponding to the sub-region ACL1 farthest from the light-transmitting area ACP is equal to the thickness of the spacing portion 30 corresponding to the main display area AM; that is, the thickness of the spacing portion 30 corresponding to the main display area AM is the maximum thickness of the spacing portions 30. Furthermore, due to manufacturing process errors, the thickness of the spacing portions 30 may not be uniform, and the thickness may differ between different regions. Therefore, within the allowable error range, the thickness of the spacing portion 30 corresponding to the sub-region ACL1 farthest from the light-transmitting area ACP is approximately equal to the thickness of the spacing portion 30 corresponding to the main display area AM.

[0188] Furthermore, the thickness of the spacing portion 30 in different sub-regions ACL1 decreases uniformly towards the light-transmitting area ACP. For example, the thickness can decrease in an arithmetic sequence to make the light-blocking effect change uniformly.

[0189] The interval 30 corresponding to the transition area ACL and the main display area AM both belong to the light-shielding layer CFB. Since it has multiple areas with different thicknesses, the light-shielding layer can be formed simultaneously by grayscale masking process. In the grayscale masking process, multiple grayscale masks with different transmittances can be used. The interval 30 with different thicknesses can correspond to the areas with different transmittances of the grayscale mask, thereby avoiding the need to form multiple intervals 30 with different thicknesses separately, thus simplifying the process.

[0190] The inventors discovered that if the boundary of the illumination range of the light-emitting device 10 is located in the spacer 30 adjacent to the filter section 40, and does not pass through the filter section 40, then if the spacer 30 is a light-blocking structure, the light that is not filtered by the filter section 40 will have difficulty escaping and will not affect the display effect; however, if the spacer 30 is a transparent structure, the light that is not filtered by the filter section 40 will escape from the spacer 30, and the color coordinates of the light will differ from those of the light filtered by the filter section 40, resulting in color shift in the image. In other words, when the light-transmitting area ACP displays an image, because the spacer 30a cannot block light, the image is prone to color shift, and the color shift varies when viewed from different angles, affecting the overall display effect of the display panel. To solve this problem, the inventors propose the following technical solution:

[0191] like Figure 11 and Figure 12As shown, in some embodiments of this disclosure, the display panel may further include an auxiliary filter layer CFS, which may be disposed on the surface of the pixel definition layer PDL opposite to the driving backplane BP. For example, the auxiliary filter layer CFS may be disposed on the surface of the second inorganic layer 502 opposite to the driving backplane BP. The auxiliary filter layer CFS is located in the region of the light-transmitting area ACP on the surface of the PDL opposite to the driving backplane BP, that is, the orthogonal projection of the auxiliary filter layer CFS on the driving backplane BP is located within the light-transmitting area ACP. At the same time, the orthogonal projection of the auxiliary filter layer CFS on the driving backplane BP may be located outside the orthogonal projection of the opening 20 on the driving backplane BP.

[0192] The auxiliary filter layer (CFS) may include multiple filters 60. One filter 60 may be disposed along the edge of an opening 20, serving as a barrier around the light-emitting device 10 within the opening 20. Simultaneously, the color of light transmitted through any filter 60 is the same as the color of light emitted by the surrounding light-emitting device 10, and the light emitted by the light-emitting device 10 toward the spacer 30 must pass through the filter 60 to reach the spacer 30. This reduces the color difference between the light emitted from the spacer 30a of the transparent structure and the light of the same color emitted from the filter 40, thereby improving the color shift of the transparent area ACP.

[0193] Correspondingly, the second electrode can cover the auxiliary filter layer CFS and can protrude at each filter body 60, and the first inorganic layer 501 can also protrude at each filter body 60.

[0194] like Figure 12 As shown, in some embodiments of this disclosure, if the adjacent spacing portions 30 of the filter portion 40 corresponding to an opening 20 are all transparent structures, then the filter body 60 extending along the edge of the opening 20 is an annular structure surrounding the opening 20.

[0195] If the spacer 30 adjacent to the filter portion 40 corresponding to an opening 20 contains a transparent spacer 30a and a light-shielding spacer 30b, for example, the opening 20 can be the opening 20 at the junction of the light-transmitting region ACP and the transition region ACDL. Since the spacer 30b is opaque, there is no color shift problem. Therefore, the filter 60 extending along the edge of the opening 20 only exists at the edge of the opening 20 corresponding to the spacer 30a, while the edge corresponding to the spacer 30b can be disconnected. For example, the filter 60 can be an arc-shaped structure.

[0196] It should be noted that the aforementioned annular structure of the filter 60 can be a circular ring, a square ring, or any other shape, forming a continuous closed structure surrounding the opening 20. Of course, in other embodiments of this disclosure, the filter 60 may also include multiple filter units spaced apart along an annular trajectory around the opening 20.

[0197] In other embodiments of this disclosure, each filter 60 may be an annular structure to simplify the process.

[0198] In some embodiments of this disclosure, to further reduce color shift, the material of the filter portion 40 corresponding to the same light-emitting device 10 and the material of the filter body 60 surrounding the light-emitting device 10 can be the same. Of course, different materials can also be used as long as the color is the same.

[0199] The aforementioned auxiliary filter layer CFS can be applied to any of the implementation methods described above, for example, as Figure 13 As shown, in Embodiment 8 of this disclosure, the auxiliary filter layer CFS can be combined with Embodiment 5.

[0200] Of course, the auxiliary filter layer CFS can also be applied to the display panel independently without being combined with any of the above implementation methods.

[0201] This disclosure provides a method for manufacturing a display panel, used to manufacture the display panel of any of the above embodiments. The specific structure of the display panel will not be described in detail here. The manufacturing method includes steps S110-S130, wherein:

[0202] Step S110: Form a driving backplate with a display area, wherein the display area includes a light-transmitting display area AC and a main display area, and the light-transmitting display area AC includes a light-transmitting area;

[0203] Step S120: A plurality of light-emitting devices and a pixel definition layer including a plurality of openings are formed on one side of the driving back plate. The openings include a first opening located in the light-transmitting area and a second opening located in the main display area. The light-emitting devices are correspondingly defined in each of the openings.

[0204] Step S130: A color filter layer is formed on the side of the pixel definition layer opposite to the driving backplate. The color filter layer includes a spacer portion and a plurality of filter portions separated by the spacer portion. In the direction perpendicular to the driving backplate, the area of ​​the spacer portion corresponding to the light-transmitting area is a transparent structure, and the area of ​​the spacer portion corresponding to the main display area is a light-shielding structure. The color of the filter portion is the same as the light-emitting color of the light-emitting device in its corresponding opening.

[0205] The distance between the edges of two adjacent first openings on the surface of the pixel definition layer away from the driving backplate is the opening interval, which satisfies the following relationship:

[0206]

[0207] Wherein, S1 is the opening interval between two adjacent first openings;

[0208] D1 is the maximum width of the edge of the light-emitting device within the first opening in the direction parallel to the pixel definition layer;

[0209] M1 is the thickness of the region of the pixel definition layer corresponding to the light-transmitting area;

[0210] H1 is the distance between the surface of the pixel definition layer corresponding to the light-transmitting area away from the driving backplate and the surface of the color filter layer near the driving backplate;

[0211] The angle between the sidewall of the first opening and the side of the driving backplate where the pixel definition layer is located, and

[0212] In some embodiments of this disclosure, for the display panel in Embodiment 1 above, when forming the pixel definition layer and the support pillars, pixel definition layers of different thicknesses (M1 > M2) can be formed using a grayscale mask process, and then the support pillars can be formed on the pixel definition layer corresponding to the main display area. Alternatively, the same material can be used to form the support pillars and the pixel definition layer, and M1 = 2M2 + N, so that the support pillars and the pixel definition layer can be formed simultaneously using a grayscale mask process.

[0213] In some embodiments of this disclosure, for the display panel of Embodiment 5 above, when forming the light-shielding layer of the color filter layer, a grayscale mask having multiple regions with different transmittance can be exposed and developed to obtain a light-shielding layer with multiple intervals of different thicknesses.

[0214] It should be noted that although the various steps of the manufacturing method in this disclosure are described in a specific order in the accompanying drawings, this does not require or imply that these steps must be performed in that specific order, or that all the steps shown must be performed to achieve the desired result. Additional or alternative steps may be omitted, multiple steps may be combined into one step, and / or one step may be broken down into multiple steps.

[0215] This disclosure also provides a display device, which may include the display panel of any of the above embodiments. The structure and beneficial effects of the display panel have been described in detail in the above embodiments. The display panel and beneficial effects of the display device of this disclosure can be referred to the above embodiments of the display panel, and will not be repeated here.

[0216] This disclosure also provides a terminal device, which may include a display device and a camera device, wherein:

[0217] The display device is any of the display devices described above, and its structure can be referred to the implementation of the display panel and display device described above, which will not be repeated here.

[0218] The camera device can be located on the side of the driving backplate opposite to the pixel definition layer and corresponds to the light-transmitting display area AC, meaning that the orthographic projection of the camera device on the driving backplate at least partially overlaps with the light-transmitting display area AC. Simultaneously, the camera device can capture images through the light-transmitting area, which can also display images, thereby enabling under-display imaging. The camera device may include a single camera, such as an RGB camera or other camera devices, and its type is not limited herein. The camera device may also include multiple camera devices, capturing images simultaneously or in a time-sharing manner.

[0219] The terminal device disclosed herein can be an electronic device such as a mobile phone or tablet computer that has image display capabilities and needs to capture images.

[0220] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the appended claims.

Claims

1. A display panel, wherein, include: A drive back panel has a display area, which includes a light-transmitting display area and a main display area, wherein the light-transmitting display area includes a light-transmitting area; A pixel definition layer is disposed on one side of the driving back panel and includes multiple openings, including a first opening located in the light-transmitting area and a second opening located in the main display area; Multiple light-emitting devices are defined one-to-one within each of the openings, and at least two of the light-emitting devices emit different colors; A color filter layer is disposed on the side of the pixel definition layer opposite to the driving backplate, and includes a spacer portion and a plurality of filter portions separated by the spacer portion; in a direction perpendicular to the driving backplate, the openings are arranged one-to-one with the filter portions, the spacer portion corresponding to the light-transmitting area is a transparent structure, and the spacer portion corresponding to the main display area is a light-shielding structure; the color of the filter portion is the same as the light-emitting color of the light-emitting device in its corresponding opening; The distance between the edges of two adjacent openings on the surface of the pixel definition layer away from the driving backplane is the opening interval; the opening interval between two adjacent first openings satisfies the following relationship: Wherein, S1 is the opening interval between two adjacent first openings; D1 is the maximum width of the edge of the light-emitting device within the first opening in the direction parallel to the pixel definition layer; M1 is the thickness of the region of the pixel definition layer corresponding to the light-transmitting area; H1 is the distance between the surface of the pixel definition layer corresponding to the light-transmitting area away from the driving backplate and the surface of the color filter layer near the driving backplate; The angle between the sidewall of the first opening and the side of the driving backplate where the pixel definition layer is located, and 2. The display panel according to claim 1, wherein, The light-emitting device includes: The first electrode is located on the same side of the driving backplate as the pixel definition layer, and the edge of the first electrode is covered by the pixel definition layer. A light-emitting functional layer is disposed on the surface of the first electrode opposite to the driving backplate; The second electrode covers the light-emitting functional layer; The maximum width of the edge of the light-emitting device within the first opening in the direction parallel to the pixel definition layer is: the maximum width of the edge of the first opening on the surface of the pixel definition layer near the driving backplate in the direction parallel to the pixel definition layer.

3. The display panel according to claim 1, wherein, The thickness of the pixel definition layer in the region between two adjacent first openings is greater than the thickness of the region between two adjacent second openings.

4. The display panel according to claim 3, wherein, The display panel also includes: The support pillar is located on the surface of the pixel definition layer opposite to the driving backplate, corresponding to the area outside the light-transmitting area.

5. The display panel according to claim 4, wherein, The thickness of the pixel definition layer in the region between two adjacent first openings is approximately equal to the sum of the thickness of the pixel definition layer in the region between two adjacent second openings and the thickness of the support column.

6. The display panel according to claim 1, wherein, The display panel also includes: An encapsulation layer covers each of the light-emitting devices, wherein the thickness of the encapsulation layer corresponding to the light-transmitting area is less than the thickness corresponding to the main display area; The color filter layer is disposed on the surface of the encapsulation layer opposite to the drive backplate, and is recessed in the area corresponding to the light-transmitting area.

7. The display panel according to claim 6, wherein, The encapsulation layer includes: A first inorganic layer covers each of the light-emitting devices; An organic layer is disposed on the surface of the first inorganic layer opposite to the driving backplate; the thickness of the organic layer corresponding to the light-transmitting area is less than the thickness corresponding to the main display area. A second inorganic layer covers the organic layer and is recessed in the region of the organic layer corresponding to the light-transmitting area; The color filter layer is disposed on the surface of the second inorganic layer away from the drive backplate, and is recessed in the area corresponding to the light-transmitting area.

8. The display panel according to claim 1, wherein, The display panel also includes: A first inorganic layer covers each of the light-emitting devices; An organic layer is disposed on the surface of the first inorganic layer opposite to the drive backplate; A second inorganic layer covers the organic layer; The color filter layer is disposed on the side of the second inorganic layer opposite to the drive backplate.

9. The display panel according to claim 1, wherein, The maximum width of the orthographic projection of at least one of the first openings on the drive backplate is less than the maximum width of the orthographic projection of at least one of the second openings on the drive backplate.

10. The display panel according to claim 1, wherein, The light-transmitting display area also includes a transition area surrounding the light-transmitting area; the intervals corresponding to the transition area are light-shielding structures, and the thickness of each interval corresponding to the transition area decreases towards the light-transmitting area.

11. The display panel according to claim 10, wherein, The transition zone includes a plurality of sub-regions that surround the light-transmitting zone in sequence. The thickness of the spacing portions corresponding to the same sub-region is the same, and the thickness of the spacing portions corresponding to different sub-regions decreases towards the light-transmitting zone. The thickness of the spacing portion corresponding to the sub-region farthest from the light-transmitting zone is approximately equal to the thickness of the spacing portion corresponding to the main display area.

12. The display panel according to any one of claims 1-11, wherein, The color filter layer includes: A light-shielding layer is disposed on the side of the pixel definition layer opposite to the driving backplate; the orthographic projection of the light-shielding layer on the driving backplate is located outside the light-transmitting area, and the light-shielding layer includes a plurality of light-shielding intervals distributed at intervals. The filter layer includes a plurality of filter elements arranged in an array, wherein the orthographic projection of each filter element on the drive back plate is distributed at least in the light-transmitting area and the main display area; the filter elements corresponding to the main display area are separated by the light-blocking intervals. A transparent protective layer covers the light-shielding layer and the light-filtering layer, and the transparent protective layer fills the transparent gap between the light-filtering portions corresponding to the light-transmitting areas.

13. The display panel according to any one of claims 1-11, wherein the display panel further comprises: A touch layer is disposed between the color filter layer and the pixel definition layer, and the touch layer has a cutout corresponding to the area of ​​the light-transmitting region.

14. A method for manufacturing a display panel, wherein, include: A driving backplate with a display area is formed, the display area including a light-transmitting display area and a main display area, the light-transmitting display area including a light-transmitting area; A plurality of light-emitting devices and a pixel definition layer including a plurality of openings are formed on one side of the driving back plate. The openings include a first opening located in the light-transmitting area and a second opening located in the main display area. The light-emitting devices are defined in each of the openings in a corresponding manner. A color filter layer is formed on the side of the pixel definition layer opposite to the driving backplate. The color filter layer includes a spacer portion and a plurality of filter portions separated by the spacer portion. In the direction perpendicular to the driving backplate, the area of ​​the spacer portion corresponding to the light-transmitting area is a transparent structure, and the area of ​​the spacer portion corresponding to the main display area is a light-shielding structure. The color of the filter portion is the same as the light-emitting color of the light-emitting device in its corresponding opening. The distance between the edges of two adjacent openings on the surface of the pixel definition layer away from the driving backplane is the opening interval; the opening interval between two adjacent first openings satisfies the following relationship: Wherein, S1 is the opening interval between two adjacent first openings; D1 is the maximum width of the edge of the light-emitting device within the first opening in the direction parallel to the pixel definition layer; M1 is the thickness of the region of the pixel definition layer corresponding to the light-transmitting area; H1 is the distance between the surface of the pixel definition layer corresponding to the light-transmitting area away from the driving backplate and the surface of the color filter layer near the driving backplate; The angle between the sidewall of the first opening and the side of the driving backplate where the pixel definition layer is located, and 15. A display device, wherein, Includes the display panel as described in any one of claims 1-13.

16. A terminal device, wherein, include: The display device according to claim 15; The camera device is located on the side of the drive backplate away from the pixel definition layer and corresponds to the light-transmitting area, and can capture images through the light-transmitting area.

Images