Display panel and display device

Abstract

Embodiments of the present application provide a display panel and a display device. The display panel comprises a substrate, a pixel definition layer, a first light adjusting layer and a filter layer. The pixel definition layer is arranged on one side of the substrate, and comprises a pixel limiting portion and a pixel opening formed by the pixel limiting portion. The pixel opening is used for accommodating a light emitting unit. The first light adjusting layer is arranged on the side of the pixel definition layer away from the substrate, and comprises a first light adjusting portion and a first opening formed by the first light adjusting portion. The first opening at least partially overlaps the pixel opening in the orthographic projection of the substrate. The filter layer comprises a plurality of filter units. At least part of each filter unit is located in the first opening, and the filter unit covers at least part of the surface of the first light adjusting portion away from the substrate. The refractive index of the first light adjusting portion is less than the refractive index of the filter unit. The present application can improve the process performance of the display panel.

Description

Technical Field

[0001] This application relates to the field of display technology, and more particularly to a display panel and display device. Background Technology

[0002] Organic light-emitting diodes (OLEDs) and flat panel displays based on light-emitting diodes (LEDs) are widely used in various consumer electronics products such as mobile phones, televisions, laptops, and desktop computers due to their advantages such as high image quality, energy saving, thin body and wide range of applications, becoming the mainstream of display devices.

[0003] However, the current manufacturing process of OLED display products needs to be improved. Summary of the Invention

[0004] This application provides a display panel and display device, which aim to improve the process performance of display products.

[0005] An embodiment of the first aspect of this application provides a display panel, which includes a substrate, a pixel definition layer, a first dimming layer, and a filter layer. The pixel definition layer is disposed on one side of the substrate and includes a pixel defining portion and a pixel opening formed by the pixel defining portion, the pixel opening being used to accommodate light-emitting units. The first dimming layer is disposed on the side of the pixel definition layer facing away from the substrate and includes a first dimming portion and a first opening formed by the first dimming portion. The orthographic projection of the first opening onto the substrate and the orthographic projection of the pixel opening onto the substrate at least partially overlap. The filter layer includes a plurality of filter units, at least a portion of each filter unit being located within the first opening, and the filter units covering at least a portion of the surface of the first dimming portion facing away from the substrate, wherein the refractive index of the first dimming portion is less than the refractive index of the filter units.

[0006] According to an embodiment of the first aspect of this application, the filter unit includes a filter portion and a first overlapping portion, at least a portion of the filter portion is located in a first opening, at least a portion of the first overlapping portion covers a first dimming portion, and the first overlapping portions of at least two adjacent filter units overlap each other.

[0007] According to any of the foregoing embodiments of the first aspect of this application, a touch component is further included. The touch component is located on the side of the filter layer facing the substrate. The touch component includes a first touch layer and a second touch layer stacked together. The first touch layer is located on the side of the first dimming part facing the substrate, and the second touch layer is located on the side of the first dimming part away from the substrate.

[0008] According to any of the foregoing embodiments of the first aspect of this application, the second touch layer includes touch traces, and the first dimming unit includes a first bottom surface facing the substrate, a first top surface away from the substrate, and a first side surface connecting the first top surface and the first bottom surface, with the touch traces located on the side of the first top surface away from the substrate.

[0009] According to any of the foregoing embodiments of the first aspect of this application, the first top surface is parallel to the surface on which the substrate is located.

[0010] According to any of the foregoing embodiments of the first aspect of this application, at least a portion of the first side protrudes toward the first opening in an arc shape.

[0011] According to any of the foregoing embodiments of the first aspect of this application, the touch component includes a touch electrode and a bridge electrode, one of which is located in a first touch layer and the other is located in a second touch layer. A first through hole is provided on the first dimming part, and at least one touch electrode is electrically connected to the bridge electrode through the first through hole.

[0012] According to any of the foregoing embodiments of the first aspect of this application, at least two adjacent touch electrodes are electrically connected to each other via a bridge electrode.

[0013] According to any of the foregoing embodiments of the first aspect of this application, the display panel further includes a first pad layer and a first light-shielding layer. The first pad layer is located on the side of the light filter layer away from the substrate. The first light-shielding layer is located on the side of the first pad layer away from the substrate. The first light-shielding layer includes a first light-shielding portion and a first light-transmitting opening formed by the first light-shielding portion. The orthographic projection of the first light-transmitting opening on the substrate and the orthographic projection of the pixel opening on the substrate at least partially overlap.

[0014] According to any of the foregoing embodiments of the first aspect of this application, the display panel further includes a second pad layer and a second light-shielding layer. The second pad layer is located on the side of the first light-shielding layer away from the substrate. The second light-shielding layer is located on the side of the second pad layer away from the substrate. The second light-shielding layer includes a second light-shielding portion and a second light-transmitting opening formed by the second light-shielding portion. The orthographic projection of the second light-transmitting opening on the substrate and the orthographic projection of the pixel opening on the substrate at least partially overlap.

[0015] According to any of the foregoing embodiments of the first aspect of this application, the display panel further includes a third pad layer, which is located on the side of the second light-shielding layer away from the substrate.

[0016] An embodiment of the first aspect of this application provides a display panel, which includes a substrate, a pixel definition layer, a first dimming layer, a second dimming layer, and a touch component. The pixel definition layer is disposed on one side of the substrate and includes a pixel defining portion and a pixel opening formed by the pixel defining portion. The pixel opening is used to accommodate a light-emitting unit. The touch component is located on the side of the filter layer facing the substrate and includes a first touch layer and a second touch layer stacked thereon. The first dimming layer is disposed on the side of the pixel definition layer away from the substrate and includes a first dimming portion and a first opening formed by the first dimming portion. The second dimming layer is located on the side of the first dimming layer away from the substrate and covers at least a portion of the surface of the first dimming portion away from the substrate. The first touch layer is located on the side of the first dimming portion facing the substrate, and the second touch layer is located on the side of the first dimming portion away from the substrate. The refractive index of the second dimming layer is greater than the refractive index of the first dimming portion.

[0017] According to an embodiment of the first aspect of this application, the display panel further includes a light filter layer located on the side of the second dimming layer away from the substrate. The light filter layer includes a light-shielding portion, a light-filtering opening formed by the light-shielding portion, and a light-filtering unit, with at least a portion of the light-filtering unit located within the light-filtering opening.

[0018] According to any of the foregoing embodiments of the first aspect of this application, the display panel further includes a filter layer, the filter layer including a plurality of filter units, at least a portion of the filter units being located in a first opening, and the plurality of filter units being interconnected and reused as a second dimming layer.

[0019] A second aspect of this application also provides a display device, including the display panel of any of the embodiments of the first aspect described above.

[0020] In the display panel provided in this application embodiment, the display panel includes: a substrate, a pixel definition layer, a first dimming layer, and a filter layer. The pixel definition layer includes a pixel defining portion and a pixel opening. The pixel defining portion is used to improve the problem of mutual interference of light emitted by light-emitting units in adjacent pixel openings. The refractive index of the first dimming portion of the first dimming layer is lower than the refractive index of the filter unit, and the filter unit covers at least a portion of the surface of the first dimming portion. At least a portion of the light emitted by the light-emitting unit can be emitted through the first dimming portion and the filter unit. The light will pass through the contact interface between the first dimming portion and the filter unit, and then be refracted, changing the light emitted from a large viewing angle to a small viewing angle, which can effectively increase the amount of light emitted at a positive viewing angle and improve the display effect of the display panel. In addition, at least a portion of the filter unit is located in the first opening, and the first opening and the pixel opening are correspondingly arranged, so that the filter unit can filter the light emitted by the light-emitting unit and improve the display effect of the display panel. The filter unit is reused as a high refractive index layer, which can effectively simplify the manufacturing process of the display panel and thus improve the process performance of the display panel. Attached Figure Description

[0021] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings, wherein the same or similar reference numerals denote the same or similar features.

[0022] Figure 1 This is a schematic diagram of the structure of a display panel provided in an embodiment of this application; Figure 2 yes Figure 1 A cross-sectional view at point AA in one example; Figure 3 yes Figure 2 A partially enlarged structural diagram; Figure 4 This is an equivalent circuit diagram of a pixel driving circuit for a display panel provided in an embodiment of this application; Figure 5 yes Figure 1 A cross-sectional view at AA in another example; Figure 6 yes Figure 5 A partially enlarged structural diagram.

[0023] Explanation of reference numerals in the attached figures: 100. Substrate; 200, Pixel definition layer; 210, Pixel limiting part; 220, Pixel opening; 230, Light-emitting unit; 231, First light-emitting unit; 232, Second light-emitting unit; 233, Third light-emitting unit; 240, First electrode; 250, Second electrode layer; 300, First dimming layer; 310, First dimming section; 311, First bottom surface; 312, First top surface; 313, First side surface; 313a, First segment; 313b, Second segment; 320, First opening; 400, Filter layer; 410, Filter unit; 411, Filter section; 412, First overlapping section; 401, First sub-layer; 402, Second sub-layer; 403, Third sub-layer; 413, Second overlapping section; 420, Light-shielding section; 430, Filter opening; 410a, Second dimming layer; 431, First filter unit; 432, Second filter unit; 433, Third filter unit; 500, Touch component; 510, First touch layer; 511, Bridge electrode; 520, Second touch layer; 521, Touch electrode; 501, Touch trace; 610. First layer; 620. First light-blocking layer; 621. First light-blocking part; 622. First light-transmitting opening; 630. Second layer; 640. Second light-blocking layer; 641. Second light-blocking part; 642. Second light-transmitting opening; 650. Third layer; 700, Encapsulation layer; X, first direction; Y, second direction; Z, thickness direction. Detailed Implementation

[0024] The features and exemplary embodiments of various aspects of this application will now be described in detail. Numerous specific details are set forth in the following detailed description to provide a comprehensive understanding of this application. However, it will be apparent to those skilled in the art that this application can be implemented without requiring some of these specific details. The following description of embodiments is merely intended to provide a better understanding of this application by illustrating examples. In the accompanying drawings and the following description, at least some well-known structures and techniques are not shown to avoid unnecessarily obscuring the application; and, for clarity, the dimensions of some structures may be exaggerated. Furthermore, the features, structures, or characteristics described below can be combined in any suitable manner in one or more embodiments.

[0025] In the description of this application, it should be noted that, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," etc., indicating orientation or positional relationships are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0026] The directional terms appearing in the following description refer to the directions shown in the figures and are not intended to limit the specific structure of the embodiments of this application. It should also be noted in the description of this application that, unless otherwise explicitly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0027] In the display panel provided by the relevant technology, the display panel includes a substrate, a pixel definition layer, an encapsulation layer, a touch layer, a dimming layer, a filter layer, etc., which are stacked in sequence. Since each layer is made in sequence, multiple masking processes are required, which seriously restricts the manufacturing efficiency of the display panel and leads to the accumulation of process errors, thus reducing the manufacturing yield of the display panel.

[0028] To address the aforementioned technical problems, this application is proposed. For a better understanding of this application, the following will be discussed in conjunction with… Figures 1 to 5 The display panel and display device according to the embodiments of this application will be described in detail.

[0029] Figure 1This is a schematic diagram of the structure of a display panel provided in an embodiment of this application. Figure 2 yes Figure 1 Sectional view at point AA; Figure 3 yes Figure 2 A partially enlarged structural diagram.

[0030] like Figures 1 to 3 As shown, an embodiment of the first aspect of this application provides a display panel, which includes a substrate 100, a pixel definition layer 200, a first dimming layer 300, and a filter layer 400. A pixel definition layer 200 is disposed on one side of the substrate 100. The pixel definition layer 200 includes a pixel defining portion 210 and a pixel opening 220 formed by the pixel defining portion 210. The pixel opening 220 is used to accommodate the light-emitting unit 230. A first dimming layer 300 is disposed on the side of the pixel definition layer 200 away from the substrate 100. The first dimming layer 300 includes a first dimming portion 310 and a first opening 320 formed by the first dimming portion 310. The orthographic projection of the first opening 320 on the substrate 100 and the orthographic projection of the pixel opening 220 on the substrate 100 at least partially overlap. A filter layer 400 includes a plurality of filter units 410. At least a portion of each filter unit 410 is located in the first opening 320, and the filter unit 410 covers at least a portion of the surface of the first dimming portion 310 away from the substrate 100. The refractive index of the first dimming portion 310 is less than the refractive index of the filter unit 410.

[0031] In the display panel provided in this application embodiment, the display panel includes: a substrate 100, a pixel definition layer 200, a first dimming layer 300, and a filter layer 400. The pixel definition layer 200 includes a pixel defining portion 210 and a pixel opening 220. The pixel defining portion 210 is used to improve the problem of mutual interference of light emitted by light-emitting units 230 within adjacent pixel openings 220. The refractive index of the first dimming portion 310 of the first dimming layer 300 is less than the refractive index of the filter unit 410, and the filter unit 410 covers at least a portion of the surface of the first dimming portion 310. At least a portion of the light emitted by the light-emitting unit 230 can be emitted through the first dimming portion 310 and the filter unit 410. The light will pass through the contact interface between the first dimming portion 310 and the filter unit 410, and then be refracted, changing the light emitted from a large viewing angle to a small viewing angle, which can effectively increase the amount of light emitted at a positive viewing angle and improve the display effect of the display panel. Furthermore, at least a portion of the filter unit 410 is located in the first opening 320, and the first opening 320 and the pixel opening 220 are correspondingly arranged, so that the filter unit 410 can filter the light emitted by the light-emitting unit 230, thereby improving the display effect of the display panel. The filter unit 410 is reused as a high refractive index layer, which can effectively simplify the manufacturing process of the display panel, thereby improving the process performance of the display panel.

[0032] In other words, in the embodiments of this application, at least a portion of the layer structure of the dimming layer and the filter layer 400 is reused. For example, the filter layer 400 is reused as a high-refractive-index layer in the dimming layer, which can reduce the overall number of film layers in the display panel, simplify the manufacturing process of the display panel, and thus improve the manufacturing efficiency and yield of the display panel.

[0033] Optionally, multiple light-emitting units 230 are arrayed along the first direction X and the second direction Y, with the first direction X, the second direction Y and the thickness direction Z intersecting each other, for example, the first direction X, the second direction Y and the thickness direction Z being perpendicular to each other.

[0034] The substrate 100 can be configured in various ways. The substrate 100 may include a substrate and a first conductive layer, a second conductive layer, and a third conductive layer stacked on one side of the substrate. An insulating layer is disposed between adjacent conductive layers. For example, a pixel driving circuit is disposed on the substrate 100. The pixel driving circuit includes a transistor and a storage capacitor. The transistor includes a semiconductor, a gate, a source, and a drain. The storage capacitor includes a first electrode and a second electrode. As an example, the gate and the first electrode may be located on the first conductive layer, the second electrode may be located on the second conductive layer, and the source and drain may be located on the third conductive layer.

[0035] Optional, see reference Figure 4 The pixel driving circuit includes a driving transistor T1, a switching transistor T2, and a storage capacitor C1. The source of the switching transistor T2 is connected to the data line Data, which provides the data signal, and the gate of the switching transistor T2 is connected to the scan line Scan, which provides the scan signal. The drain of the switching transistor T2 is connected to the gate of the driving transistor T1. The two ends of the storage capacitor C1 are connected to the gate and the source of the driving transistor T1, respectively. The drain of the driving transistor T1 is connected to the light-emitting device. Figure 6 This is one implementation of the pixel driving circuit, but the pixel driving circuit of this application is not limited to... Figure 6 The pixel driving circuit shown in the 2T1C diagram can also be other pixel driving circuits, such as 7T1C, 8T1C, etc. The storage capacitor C1 is the capacitor described above and includes a first plate and a second plate. The driving transistor T1 and the switching transistor T2 are both transistors described above.

[0036] Optionally, the substrate 100 includes a planarization layer located on the side of the pixel driving circuit facing away from the substrate, and the pixel definition layer 200 is disposed on the side of the planarization layer facing away from the substrate. Optionally, a first electrode layer is disposed between the planarization layer and the pixel definition layer 200. The first electrode layer includes a plurality of first electrodes 240 arranged in an array, and each first electrode 240 is correspondingly disposed with each pixel opening 220. For example, the central region of the first electrode 240 is exposed through the pixel opening 220, and the edge region of the first electrode 240 is located between the pixel defining portion 210 and the planarization layer.

[0037] Optionally, the display panel also includes a second electrode layer 250, which is located on the side of the pixel definition layer 200 and the light-emitting unit 230 away from the substrate 100. The first electrode 240 and the second electrode layer 250 are used to cooperate in driving the light-emitting unit 230 to emit light.

[0038] Optionally, the display panel further includes an encapsulation layer 700, which is located on the side of the second electrode layer 250 opposite to the substrate 100. Optionally, a first dimming layer 300 is located on the side of the encapsulation layer 700 opposite to the substrate 100.

[0039] There are several ways to set up the filter layer 400, such as multiple filter units 410 of the filter layer 400 being distributed at intervals to improve the problem of mutual interference between two adjacent filter units 410.

[0040] In some other alternative embodiments, such as Figure 2 and Figure 3 As shown, the filter unit 410 includes a filter portion 411 and a first overlapping portion 412. At least a portion of the filter portion 411 is located in the first opening 320, and at least a portion of the first overlapping portion 412 covers the first dimming portion 310. Furthermore, the first overlapping portions 412 of at least two adjacent filter units 410 overlap each other. For example, the first overlapping portions 412 of at least two adjacent filter units 410 overlap to form a light-shielding portion 420.

[0041] In these optional embodiments, the first overlapping portions 412 of at least two adjacent filter units 410 overlap each other, and the overlapping light-shielding portion 420 has a good light-shielding effect, which can block the large-angle light emission of the light-emitting unit 230, improve the privacy protection effect of the display panel at a large viewing angle, and improve the problem of mutual interference between the light emission of two adjacent light-emitting units 230.

[0042] Optionally, the plurality of light-emitting units 230 includes a first light-emitting unit 231, a second light-emitting unit 232, and a third light-emitting unit 233. The first light-emitting unit 231 can be used to emit red light, the second light-emitting unit 232 can be used to emit green light, and the third light-emitting unit 233 can be used to emit blue light. In other embodiments, the first light-emitting unit 231 can also be used to emit green or blue light, the second light-emitting unit 232 can also be used to emit red or blue light, and the third light-emitting unit 233 can also be used to emit red or green light.

[0043] Optionally, the plurality of filter units 410 include a first filter unit 431, a second filter unit 432, and a third filter unit 433. The first filter unit 431 may be located on the side of the first light-emitting unit 231 away from the substrate 100, and the first filter unit 431 may be used to allow red light to pass through; the second filter unit 432 may be located on the side of the second light-emitting unit 232 away from the substrate 100, and the second filter unit 432 may be used to allow green light to pass through; the third filter unit 433 may be located on the side of the third light-emitting unit 233 away from the substrate 100, and the third light-emitting unit 233 may be used to allow blue light to pass through.

[0044] Optionally, the filter layer 400 includes a first sub-layer 401, a second sub-layer 402, and a third sub-layer 403. The first sub-layer 401, the second sub-layer 402, and the third sub-layer 403 each include a filter unit 410 and a second overlapping portion 413. The second overlapping portion 413 and at least a portion of the first overlapping portion 412 overlap each other.

[0045] In these optional embodiments, the first sub-layer 401, the second sub-layer 402, and the third sub-layer 403 can be prepared in steps to form the first filter unit 431, the second filter unit 432, and the third filter unit 433. During the preparation of the first sub-layer 401, the second sub-layer 402, and the third sub-layer 403, the material located at the position of the light-shielding part 420 can be retained. The light-shielding part 420 is formed by stacking three sub-layers, which can improve the light-shielding effect of the light-shielding part 420.

[0046] In some optional embodiments, the display panel further includes a touch component 500 located on the side of the filter layer 400 facing the substrate 100. The touch component 500 includes a first touch layer 510 and a second touch layer 520 stacked together. The first touch layer 510 is located on the side of the first dimming section 310 facing the substrate 100, and the second touch layer 520 is located on the side of the first dimming section 310 away from the substrate 100.

[0047] In these optional embodiments, one of the first touch layer 510 and the second touch layer 520 of the touch component 500 is located on the side of the first dimming section 310 facing the substrate 100, and the other is located on the side of the first dimming section 310 away from the substrate 100. The first dimming section 310 can also be reused as an insulating layer between the first touch layer 510 and the second touch layer 520, which can further reduce the number of inner film layers of the display panel, simplify the manufacturing process of the display panel, and improve the manufacturing efficiency and yield of the display panel.

[0048] Optionally, when the first dimming unit 310 is located between the first touch layer 510 and the second touch layer 520, the first dimming unit 310 must not only meet the requirement that its refractive index is less than that of the filter unit 410, but also have a lower dielectric constant to meet the insulation requirements between the first touch layer 510 and the second touch layer 520.

[0049] The first dimming unit 310 can be configured in various ways. Optionally, the first dimming unit 310 includes a first bottom surface 311 facing the substrate 100, a first top surface 312 facing away from the substrate 100, and a first side surface 313 connecting the first top surface 312 and the first bottom surface 311. The filter unit 410 covers the first side surface 313 and at least part of the first top surface 312. For example, the filter unit 410 completely covers the first side surface 313 and the first top surface 312, or the filter unit 410 completely covers the first side surface 313 and covers part of the first top surface 312. Optionally, the first top surface 312 is parallel to the surface of the substrate 100. For example, the first top surface 312 is perpendicular to the thickness direction Z, and the first top surface 312 is a plane.

[0050] Optionally, at least a portion of the first side surface 313 protrudes in an arc shape towards the first opening 320, so that a larger contact surface can be formed between the first side surface 313 and the filter unit 410, improving the dimming effect. For example, the first side surface 313 includes a first segment 313a and a second segment 313b. The first segment 313a is connected to the first bottom surface 311, and the second segment 313b is connected between the first segment 313a and the first top surface 312. The second segment 313b is an arc surface protruding towards the first opening 320. Alternatively, the angle between the second segment 313b and the first segment 313a is greater than 90 degrees, and the angle between the second segment 313b and the first top surface 312 is greater than 90 degrees. That is, at least a portion of the first side surface 313 protrudes in an arc shape towards the first opening 320, or at least a portion of the first side surface 313 has an angle greater than 90 degrees with the first top surface 312.

[0051] In some alternative embodiments, the second touch layer 520 includes touch traces 501 located on the side of the first top surface 312 facing away from the substrate 100. Placing the touch traces 501 on the relatively flat first top surface 312 can improve the fabrication yield of the touch component 500.

[0052] In some optional embodiments, the touch component 500 includes a touch electrode 521 and a bridge electrode 511, one of which is located in the first touch layer 510 and the other is located in the second touch layer 520. A first via is provided on the first dimming part 310, and at least one touch electrode 521 is electrically connected to the bridge electrode 511 via the first via.

[0053] Optionally, the plurality of touch electrodes 521 include a first touch electrode 521 and a second touch electrode 521. The plurality of first touch electrodes 521 are distributed along a first direction X and electrically connected to each other within the first touch layer 510. The plurality of second touch electrodes 521 are distributed along a second direction Y, and two adjacent second touch electrodes 521 along the second direction Y are electrically connected to each other through a bridge electrode 511.

[0054] In these optional embodiments, the first dimming unit 310 is also provided with a first via, so that at least one touch electrode 521 can be electrically connected to the bridge electrode 511 via the first via, and the first dimming unit 310 will not affect the electrical connection between the multiple touch electrodes 521.

[0055] Optionally, at least two adjacent touch electrodes 521 are electrically connected to each other via a bridge electrode 511, for example, the two adjacent second touch electrodes 521 along the second direction Y described above are electrically connected to each other via a bridge electrode 511.

[0056] In some optional embodiments, the display panel further includes a first pad layer 610 and a first light-shielding layer 620. The first pad layer 610 is located on the side of the light filter layer 400 facing away from the substrate 100; the first light-shielding layer 620 is located on the side of the first pad layer 610 facing away from the substrate 100, and the first light-shielding layer 620 includes a first light-shielding portion 621 and a first light-transmitting opening 622 formed by the first light-shielding portion 621, and the orthographic projection of the first light-transmitting opening 622 on the substrate 100 and the orthographic projection of the pixel opening 220 on the substrate 100 at least partially overlap.

[0057] Optionally, in the display area of ​​the display panel, the height difference between the first pad layer 610 and the surface of the filter layer 400 is less than 1 micrometer. For example, the first pad layer 610 is prepared using an inkjet printing process.

[0058] In these optional embodiments, the insulating layer between the first light-shielding layer 620 and the filter layer 400 is a first padding layer 610. The first padding layer 610 can be fabricated using inkjet printing technology, eliminating the need for a photomask, thus saving the number of photomasks and simplifying the manufacturing process of the display panel. Furthermore, using inkjet printing to fabricate the first padding layer 610 results in excellent leveling properties; in the display area, the height difference between the first padding layer 610 and the surface of the filter layer is less than 1 micrometer, making the surface of the first padding layer 610 smoother. In addition, by providing the first light-shielding part 621, large-angle light from the light-emitting unit 230 can be blocked, improving the privacy protection effect of the display panel.

[0059] Optionally, some large-angle light rays from the light-emitting unit 230 will undergo total internal reflection at the first side 313 of the first dimming unit 310, transforming into small-angle light rays; other large-angle light rays entering the first dimming unit 310 will be blocked by a film layer such as the light-shielding part 420 or the first light-shielding layer 620. Therefore, this application can reduce the amount of large-angle light emitted from the light-emitting surface of the display panel, achieving a privacy-prevention display effect.

[0060] Optionally, the first light-transmitting opening 622 and the light-emitting unit 230 can be configured in a one-to-one correspondence, or the first light-transmitting opening 622 can be configured to correspond to multiple light-emitting units 230. For example, the orthographic projection of multiple pixel openings 220 on the substrate 100 is located within the orthographic projection of the same first light-transmitting opening 622 on the substrate 100.

[0061] In some optional embodiments, the display panel further includes a second pad layer 630 and a second light-shielding layer 640. The second pad layer 630 is located on the side of the first light-shielding layer 620 away from the substrate 100; the second light-shielding layer 640 is located on the side of the second pad layer 630 away from the substrate 100, and the second light-shielding layer 640 includes a second light-shielding portion 641 and a second light-transmitting opening 642 formed by the second light-shielding portion 641. The orthographic projection of the second light-transmitting opening 642 on the substrate 100 and the orthographic projection of the pixel opening 220 on the substrate 100 at least partially overlap.

[0062] Optionally, in the display area of ​​the display panel, the height difference between the second pad layer 630 and the surface of the first light-shielding layer 620 is less than 1 micrometer. For example, the second pad layer 630 is fabricated using an inkjet printing process.

[0063] In these optional embodiments, the insulating layer between the second light-shielding layer 640 and the first light-shielding layer 620 is a second padding layer 630. This second inkjet padding layer can be fabricated using inkjet printing technology, eliminating the need for a photomask and saving on the number of photomasks, thus simplifying the display panel fabrication process. Furthermore, using inkjet printing to fabricate the second padding layer 630 results in excellent leveling properties; in the display area, the height difference between the second padding layer 630 and the surface of the first light-shielding layer 620 is less than 1 micrometer, making the surface of the second padding layer 630 smoother. In addition, by providing the second light-shielding part 641, large-angle light from the light-emitting unit 230 can be blocked, improving the privacy protection effect of the display panel.

[0064] Optionally, the second light-transmitting opening 642 and the light-emitting unit 230 can be configured in a one-to-one correspondence, or the second light-transmitting opening 642 can be configured to correspond to multiple light-emitting units 230. For example, the orthographic projection of multiple pixel openings 220 onto the substrate 100 is located within the orthographic projection of the same second light-transmitting opening 642 onto the substrate 100.

[0065] Optionally, the display panel further includes a third pad layer 650, which is located on the side of the second light-shielding layer 640 facing away from the substrate 100. Optionally, in the display area of ​​the display panel, the height difference between the third pad layer 650 and the surface of the first light-shielding layer 620 is less than 1 micrometer. For example, the third pad layer 650 is fabricated using inkjet printing. That is, the protective layer on the second light-shielding portion 641 can also be fabricated using inkjet printing to form the third pad layer 650, which can further reduce the number of photomasks and simplify the fabrication process of the display panel. Moreover, using inkjet printing to fabricate the third pad layer 650 gives it good leveling properties, and in the display area, the height difference between the third pad layer 650 and the surface of the filter layer is less than 1 micrometer, resulting in a smoother surface for the third pad layer 650.

[0066] like Figures 1 to 5 As shown, an embodiment of the first aspect of this application also provides a display panel, which includes a substrate 100, a pixel definition layer 200, a touch component 500, a first dimming layer 300, and a second dimming layer 410a. The pixel definition layer 200 is disposed on one side of the substrate 100, and includes a pixel defining portion 210 and a pixel opening 220 formed by the pixel defining portion 210. The pixel opening 220 is used to accommodate a light-emitting unit 230. The touch component 500 is located on the side of the filter layer 400 facing the substrate 100, and includes a first touch layer 510 and a second touch layer 520 stacked together. The first dimming layer 300 is disposed on the side of the pixel definition layer 200 facing away from the substrate 100. The 0 includes a first dimming section 310 and a first opening 320 formed by the first dimming section 310, and a second dimming layer 410a located on the side of the first dimming layer 300 away from the substrate 100 and covering at least a portion of the surface of the first dimming section 310 away from the substrate 100. The first touch layer 510 is located on the side of the first dimming section 310 facing the substrate 100, and the second touch layer 520 is located on the side of the first dimming section 310 away from the substrate 100. The refractive index of the second dimming layer is greater than the refractive index of the first dimming section 310.

[0067] In the display panel provided in this embodiment, the display panel includes a substrate 100, a pixel definition layer 200, a touch component 500, a first dimming layer 300, and a second dimming layer 410a. The pixel definition layer 200 includes a pixel defining portion 210 and a pixel opening 220. The pixel defining portion 210 is used to improve the problem of light interference between light-emitting units 230 in adjacent pixel openings 220. The touch component 500 is used to realize the touch function of the display panel. In the first dimming layer 300 and the second dimming layer 410a, the first dimming portion 310 of the first dimming layer 300 has a smaller refractive index. When light passes through the first dimming portion 310 and the second dimming layer 410a in sequence, the contact surface between the first dimming portion 310 and the second dimming layer 410a can convert light emission from a large viewing angle to a small viewing angle, which can effectively increase the amount of light emitted at a positive viewing angle and improve the display effect of the display panel. One of the first touch layer 510 and the second touch layer 520 of the touch component 500 is located on the side of the first dimming part 310 facing the substrate 100, and the other is located on the side of the first dimming part 310 away from the substrate 100. The first dimming part 310 can also be reused as an insulating layer between the first touch layer 510 and the second touch layer 520, which can further reduce the number of inner film layers of the display panel, simplify the manufacturing process of the display panel, and improve the manufacturing efficiency and yield of the display panel.

[0068] The display panel of this application embodiment and the display panel of any of the above embodiments can be cross-referenced. For example, the touch layer also includes the touch electrode 521 and the bridge electrode 511 described above. The first dimming unit 310 includes the first bottom surface 311, the first top surface 312 and the first side surface 313 described above.

[0069] like Figure 5 and Figure 6 As shown, in some embodiments, the display panel further includes a light filter layer 400 located on the side of the second dimming layer 410a away from the substrate 100. The light filter layer 400 includes a light-shielding portion 420, a light filter opening 430 formed by the light-shielding portion 420, and a light filter unit 410. At least a portion of the light filter unit 410 is located within the light filter opening 430.

[0070] In these alternative embodiments, the filter layer 400 can be directly fabricated on the second dimming layer 410a, and the display effect can be improved by filtering stray light through the filter unit 410.

[0071] In some embodiments, the display panel further includes a filter layer 400, which includes a plurality of filter units 410, at least a portion of which is located in the first opening 320, and the plurality of filter units 410 are interconnected and multiplexed to form a second dimming layer 410a.

[0072] In these optional embodiments, as described above, the filter unit 410 can be reused as a second dimming layer 410a, which can further reduce the number of inner film layers in the display panel, simplify the manufacturing process of the display panel, and improve the manufacturing efficiency and yield of the display panel.

[0073] The second aspect of this application also provides a display device, including the display panel of any of the first aspect embodiments described above. Since the display device provided in the second aspect of this application includes the display panel of any of the first aspect embodiments described above, it has the beneficial effects of the display panel of any of the first aspect embodiments described above, which will not be elaborated further here.

[0074] The display devices in this application include, but are not limited to, mobile phones, personal digital assistants (PDAs), tablet computers, e-books, televisions, access control systems, smart landline phones, control consoles, and other devices with display functions.

[0075] Although this application has been described with reference to preferred embodiments, various modifications can be made thereto and components can be replaced with equivalents without departing from the scope of this application. In particular, the technical features mentioned in the various embodiments can be combined in any manner, provided there is no structural conflict. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A display panel, characterized in that, include: substrate; A pixel definition layer is disposed on one side of the substrate. The pixel definition layer includes a pixel defining portion and a pixel opening formed by the pixel defining portion. The pixel opening is used to accommodate a light-emitting unit. A first dimming layer is disposed on the side of the pixel definition layer opposite to the substrate. The first dimming layer includes a first dimming part and a first opening formed by the first dimming part. The orthographic projection of the first opening on the substrate and the orthographic projection of the pixel opening on the substrate at least partially overlap. The filter layer includes a plurality of filter units, at least a portion of each filter unit being located in the first opening, and the filter unit covering at least a portion of the surface of the first dimming section facing away from the substrate. The refractive index of the first dimming unit is less than that of the filter unit.

2. The display panel according to claim 1, characterized in that, The filter unit includes a filter portion and a first overlapping portion. At least a portion of the filter portion is located in the first opening, and at least a portion of the first overlapping portion covers the first dimming portion. The first overlapping portions of at least two adjacent filter units overlap each other. Preferably, the filter layer includes a first sub-layer, a second sub-layer, and a third sub-layer, each of the first sub-layer, the second sub-layer, and the third sub-layer includes the filter unit and a second overlapping portion, wherein the second overlapping portion and at least a portion of the first overlapping portion overlap each other.

3. The display panel according to claim 1, characterized in that, Also includes: A touch component is located on the side of the filter layer facing the substrate. The touch component includes a first touch layer and a second touch layer stacked together. The first touch layer is located on the side of the first dimming part facing the substrate, and the second touch layer is located on the side of the first dimming part away from the substrate. Preferably, the second touch layer includes a second touch trace, the first dimming part includes a first bottom surface facing the substrate, a first top surface away from the substrate, and a first side surface connecting the first top surface and the first bottom surface, and the second touch trace is located on the side of the first top surface away from the substrate; Preferably, the first top surface is parallel to the surface of the substrate; Preferably, at least a portion of the first side protrudes toward the first opening in an arc shape, or at least a portion of the first side has an angle greater than 90 degrees with the first top surface; Preferably, the filter unit includes a filter portion and a first overlapping portion, at least a portion of the filter portion is located in the first opening, at least a portion of the first overlapping portion covers the first dimming portion, and the first overlapping portions of at least two adjacent filter units overlap each other. The first overlapping portion covers the second touch trace.

4. The display panel according to claim 3, characterized in that, The touch component includes a touch electrode and a bridge electrode. One of the touch electrode and the bridge electrode is located in the first touch layer, and the other is located in the second touch layer. A first via is provided on the first dimming part, and at least one of the touch electrodes is electrically connected to each other via the first via and the bridge electrode. Preferably, at least two adjacent touch electrodes are electrically connected to each other via the bridge electrode.

5. The display panel according to claim 1, characterized in that, Also includes: The first pad layer is located on the side of the filter layer away from the substrate. In the display area of ​​the display panel, the height difference between the surface of the first pad layer and the surface of the filter layer is less than 1 micrometer. A first light-shielding layer is located on the side of the first pad layer away from the substrate. The first light-shielding layer includes a first light-shielding portion and a first light-transmitting opening formed by the first light-shielding portion. The orthographic projection of the first light-transmitting opening on the substrate and the orthographic projection of the pixel opening on the substrate at least partially overlap. Preferably, the first pad layer is prepared using inkjet printing technology.

6. The display panel according to claim 5, characterized in that, Also includes: The second pad layer is located on the side of the first light-shielding layer away from the substrate. In the display area of ​​the display panel, the height difference between the surface of the second pad layer and the surface of the first light-shielding layer is less than 1 micrometer. The second light-shielding layer is located on the side of the second pad layer away from the substrate. The second light-shielding layer includes a second light-shielding portion and a second light-transmitting opening formed by the second light-shielding portion. The orthographic projection of the second light-transmitting opening on the substrate and the orthographic projection of the pixel opening on the substrate at least partially overlap. Preferably, it further includes a third pad layer located on the side of the second light-shielding layer away from the substrate, in the display area of ​​the display panel, and the height difference between the surface of the third pad layer and the surface of the second light-shielding layer is less than 1 micrometer. Preferably, the second pad layer is prepared by inkjet printing process; Preferably, the third pad layer is prepared using inkjet printing technology.

7. A display panel, characterized in that, include: substrate; A pixel definition layer is disposed on one side of the substrate. The pixel definition layer includes a pixel defining portion and a pixel opening formed by the pixel defining portion. The pixel opening is used to accommodate a light-emitting unit. A touch component is located on the side of the filter layer facing the substrate. The touch component includes a first touch layer and a second touch layer stacked together. A first dimming layer is disposed on the side of the pixel definition layer opposite to the substrate. The first dimming layer includes a first dimming portion and a first opening formed by the first dimming portion. The second dimming layer is located on the side of the first dimming layer opposite to the substrate and covers at least a portion of the surface of the first dimming portion opposite to the substrate. The first touch layer is located on the side of the first dimming unit facing the substrate, and the second touch layer is located on the side of the first dimming unit away from the substrate. The refractive index of the second dimming unit is greater than that of the first dimming unit.

8. The display panel according to claim 7, characterized in that, It also includes a filter layer located on the side of the second dimming layer away from the substrate. The filter layer includes a light-shielding portion, a filter opening formed by the light-shielding portion, and a filter unit. At least a portion of the filter unit is located within the filter opening.

9. The display panel according to claim 7, characterized in that, Also includes: The filter layer includes multiple filter units, at least a portion of which is located in the first opening, and the multiple filter units are interconnected and reused as the second dimming layer.

10. A display device, characterized in that, Includes the display panel as described in any one of claims 1-9.

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