Display panel and display device

Abstract

The present invention discloses a display panel and a display device. The display panel includes a display substrate having a first display area, a second display area at least partially surrounding the first display area, and a non-display area adjacent to the first display area. The first display area is provided with a plurality of edge sub-pixels adjacent to and spaced apart from the non-display area. The display substrate also includes a shielding member, which is provided on the light-emitting side of the display substrate corresponding to the plurality of edge sub-pixel distribution areas. The orthographic projection of the shielding member on the display substrate covers at least a portion of the edge sub-pixels, and the orthographic projection of the shielding member on the display substrate and the contour line of the first display interval are located within the intervals between the edge sub-pixels. By shielding a portion of the edge sub-pixels with the shielding member, the jagged problem at the edge of the non-display area is improved. At the same time, by controlling the shielding position of the shielding member, the brightness of the edge sub-pixel distribution area is ensured to be controllable, thereby improving the display effect of the display panel.

Description

Technical Field

[0001] The present invention belongs to the technical field of electronic products, and in particular relates to a display panel and a display device. Background Art

[0002] With the diversified development of new display technologies, OLED (Organic Light Emitting Diode) has gradually become the mainstream flat-panel display technology, and on this basis, under-screen structured light technology has been introduced to realize functions such as face recognition. In order to ensure the implementation of under-screen structured light technology, the corresponding area on the display panel is set to low PPI (Pixels Per Inch) to improve transparency. However, current display panels often need to have non-display areas such as through holes or blind holes to realize the integration of devices such as cameras. At this time, if the non-display area is set in the middle of the low pixel density area, it will cause jagged stripes on the edge of the non-display area, affecting the display effect of the display panel.

[0003] Therefore, a new display panel and display device are urgently needed. Summary of the Invention

[0004] Embodiments of the present invention provide a display panel and a display device, which reduce the jaggedness caused by low pixel density at the edge of a non-display area, while ensuring uniformity of brightness at the edge of the non-display area, thereby improving the display effect of the display panel.

[0005] On the one hand, an embodiment of the present invention provides a display panel, comprising: a display substrate, having a first display area, a second display area at least partially surrounding the first display area, and a non-display area adjacent to the first display area, the first display area being provided with a plurality of edge sub-pixels adjacent to and spaced apart from the non-display area; a shielding member being arranged on the light-emitting side of the display substrate corresponding to the distribution area of ​​the plurality of edge sub-pixels, the orthographic projection of the shielding member on the display substrate covering at least a portion of the edge sub-pixels, and the orthographic projection of the shielding member on the display substrate and the contour line of the first display interval are located within the intervals between each of the edge sub-pixels.

[0006] According to one aspect of the present invention, each of the edge sub-pixels includes an anode, and the anodes of at least two edge sub-pixels of the same color are electrically connected to each other to form a merged sub-pixel unit; the orthographic projection of the shielding member on the display substrate covers at least part of the edge sub-pixels in the merged sub-pixel unit.

[0007] According to one aspect of the present invention, the display substrate includes an array layer, the array layer includes a plurality of pixel circuits, and each of the merged sub-pixel units is connected to a different pixel circuit.

[0008] According to one aspect of the present invention, a touch layer is further included. The touch layer is provided on the light-emitting side of the display substrate, and the shielding member is provided on the same layer as the touch layer.

[0009] According to one aspect of the present invention, the touch layer includes a touch electrode layer, an insulating layer and a cross-bridge connection layer stacked in a direction perpendicular to the plane of the display substrate, and the shielding member and the cross-bridge connection layer are arranged in the same layer; preferably, the cross-bridge connection layer includes at least one of an aluminum metal layer and a titanium-aluminum-titanium composite metal layer.

[0010] According to one aspect of the present invention, the first display area is arranged around the non-display area, and at least one side of an edge contour of the non-display area is a curved side.

[0011] According to one aspect of the present invention, the non-display area is provided with a through hole or a blind hole, and the through hole or the blind hole is in a circular or elliptical shape.

[0012] According to one aspect of the present invention, a plurality of the merging sub-pixel units of different colors form an edge pixel group, and the orthographic projection of each edge pixel group on the display substrate is rectangular and arranged in rows and columns.

[0013] According to one aspect of the present invention, the edge pixel group includes a protruding portion protruding toward the non-display area, and the orthographic projection of the shielding member on the display substrate at least partially covers the edge sub-pixels in the protruding portion.

[0014] Another aspect of the present invention provides a display device, including: a display panel, which is the display panel in the above embodiment; and an optical element, which is arranged corresponding to the first display area of ​​the display panel.

[0015] Compared to the prior art, the display panel provided by an embodiment of the present invention includes a display substrate having a first display area and a second display area at least partially surrounding the first display area. The pixel density of the first display area is lower than that of the second display area. Specifically, by setting the first display area to a low pixel density, the implementation of under-screen structured light technology is ensured. The display substrate also includes a non-display area adjacent to the first display area. The non-display area includes a through hole or blind hole for integrating functions such as a camera. The first display area is provided with a plurality of edge sub-pixels adjacent to and spaced apart from the non-display area. To reduce the aliasing effect caused by the low pixel density near the non-display area, the display panel also includes a shielding member disposed on the light-emitting side of the display substrate corresponding to the distribution area of ​​the plurality of edge sub-pixels. The shielding member's orthographic projection on the display substrate covers at least a portion of the edge sub-pixels, and the orthographic projection of the shielding member on the display substrate and the outline of the first display area are located within the intervals between the edge sub-pixels. By shielding a portion of the edge sub-pixels with the shielding member, the amount of light emitted by the edge sub-pixels that transmits to the light-emitting side of the display substrate is reduced, thereby reducing the luminance of the display area corresponding to the edge sub-pixels and thereby improving the aliasing effect at the edge of the non-display area. At the same time, since the positive projection of the shielding member on the display substrate and the outline of the first display interval are located in the interval between each edge sub-pixel, that is, the shielding member does not cover a part of each edge sub-pixel, but covers the entire single edge sub-pixel, when an alignment offset occurs during the preparation of the display panel, the brightness of the edge sub-pixel distribution area can still be controlled, thereby ensuring the uniformity of the brightness at the edge of the non-display area and improving the display effect of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0017] Figure 1 is a top view of a display panel provided by an embodiment of the present invention;

[0018] Figure 2 is a schematic diagram of a pixel structure at the edge of a non-display area provided by an embodiment of the present invention;

[0019] Figure 3 Schematic diagram of a pixel structure at the edge of a non-display area provided with a shielding member according to an embodiment of the present invention;

[0020] Figure 4 yes Figure 1 A cross-sectional view of a display panel along the CC direction;

[0021] Figure 5 yes Figure 1 A cross-sectional view of another display panel along the CC direction;

[0022] Figure 6 FIG. 4 is a top view of a display panel provided in another embodiment of the present invention.

[0023] In the attached figure:

[0024] 1-display substrate; 2-shielding member; 3-array layer; 4-anode; 5-light-emitting layer; 6-cathode; 7-touch layer; 71-electrode layer; 72-insulating layer; 73-bridge connection layer; P-edge sub-pixel; QA-edge pixel rent; AA1-first display area; AA2-second display area; NA-non-display area. DETAILED DESCRIPTION

[0025] The features and exemplary embodiments of various aspects of the present invention will be described in detail below. In the detailed description below, many specific details are proposed in order to provide a comprehensive understanding of the present invention. However, it will be apparent to those skilled in the art that the present invention can be implemented without the need for some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present invention by illustrating examples of the present invention.

[0026] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising..." does not exclude the presence of additional identical elements in the process, method, article, or device comprising the element.

[0027] In order to better understand the present invention, Figures 1 to 6 A display panel and a display device according to embodiments of the present invention are described in detail.

[0028] See also Figures 1 to 6An embodiment of the present invention provides a display panel, comprising: a display substrate 1 having a first display area AA1, a second display area AA2 at least partially surrounding the first display area AA1, and a non-display area NA adjacent to the first display area AA1; the first display area AA1 being provided with a plurality of edge sub-pixels P adjacent to and spaced apart from the non-display area NA; a shielding member 2 disposed on a light-emitting side of the display substrate 1 corresponding to a distribution region of the plurality of edge sub-pixels; an orthographic projection of the shielding member 2 on the display substrate 1 at least partially covering the edge sub-pixels P, and a contour line between the orthographic projection of the shielding member 2 on the display substrate 1 and the first display area AA1 being located within the intervals between the edge sub-pixels P.

[0029] The display panel provided by an embodiment of the present invention includes a display substrate 1 and a shielding member 2. The shielding member 2 is disposed on the light-emitting side of the display substrate 1, corresponding to the distribution area of ​​multiple edge sub-pixels P. The orthographic projection of the shielding member 2 on the display substrate covers at least a portion of the edge sub-pixels P, and the contour line between the orthographic projection of the shielding member 2 on the display substrate 1 and the first display area AA1 lies within the intervals between each edge sub-pixel P. By shielding some of the edge sub-pixels P by the shielding member 2, the amount of light emitted by the edge sub-pixels P that transmits to the light-emitting side of the display substrate is reduced, thereby reducing the luminance of the display area corresponding to the edge sub-pixels P and further improving the aliasing problem at the edge of the non-display area NA. At the same time, since the contour line between the orthographic projection of the shielding member 2 on the display substrate 1 and the first display area AA1 is located in the interval between each edge sub-pixel P, that is, the shielding member 2 does not cover a part of each edge sub-pixel P, but covers the entire single edge sub-pixel P. When an alignment offset occurs during the preparation of the display panel, the brightness of the distribution area of ​​the edge sub-pixels P can still be controlled, thereby ensuring the uniformity of the brightness at the edge of the non-display area NA and improving the display effect of the display panel.

[0030] For details, please refer to Figures 1 to 3The display panel proposed in an embodiment of the present invention includes a display substrate 1 having a first display area AA1 and a second display area AA2 at least partially surrounding the first display area AA1. Specifically, the implementation of under-screen structured light technology can be ensured by setting the first display area AA1 to a low pixel density. The display substrate 1 also includes a non-display area NA adjacent to the first display area AA1. The non-display area NA includes a through hole or blind hole for integrating functions such as a camera. The first display area AA1 is provided with a plurality of edge sub-pixels P adjacent to and spaced apart from the non-display area NA. It should be noted that the edge sub-pixels P are located at the edge of the non-display area NA and adjacent to the first display area AA1. Due to the shape of the edge sub-pixels P, the outer contours of the plurality of adjacent edge sub-pixels P near the non-display area NA will exhibit distinct concave and convex lines, which do not match the edge contour of the non-display area NA. Therefore, if the non-display area NA is located in a low pixel density area, the edge of the non-display area NA will exhibit noticeable jagged edges when displaying images.

[0031] Furthermore, although the display panel has certain corresponding precision requirements during its production, the shielding member 2 will inevitably be offset from the edge sub-pixels P during the actual production process. In this case, if the shielding member 2 is set only according to the shape of the outer contour of the non-display area NA, the orthographic projection of the shielding member 2 on the display substrate 1 will cover a portion of some edge sub-pixels P. As a result, when the orthographic projection of the shielding member 2 on the display substrate 1 and the contour line of the first display area are located within the intervals between the edge sub-pixels P, even if the orthographic projection of the shielding member 2 on the display substrate 1 and the contour line of the first display area are offset, the offset is insufficient to allow the shielding member 2 to cover a portion of a certain edge sub-pixel P. Therefore, the brightness of the edge sub-pixels P is fully controlled, thereby ensuring the uniformity of the brightness at the edge of the non-display area NA and thus the display effect of the display panel.

[0032] The light shielding member 2 can be configured as an opaque layer located on the light-emitting side of the display substrate 1 and corresponding to the distribution area of ​​the edge sub-pixels P. The opaque layer can be a metal layer or a black ink film. Optionally, the alignment deviation between the light shielding member 2 and the edge sub-pixels P should be less than 10 μm, preferably less than 5 μm, to ensure that the edge sub-pixels P are effectively shielded without affecting the image displayed on the display substrate 1.

[0033] To improve the transparency of the first display area AA1, pixel binning is used to reduce the pixel density of the first display area AA1. Pixel binning combines multiple pixels into a single pixel or a pixel cluster. This reduces the total number of pixels and, consequently, the pixel density, by combining multiple edge sub-pixels P of the same color into a larger binned sub-pixel unit.

[0034] For further explanation of the specific structure of the merged sub-pixel unit, please refer to Figure 4 and Figure 5 In the embodiment of the present invention, each edge sub-pixel P includes an anode 4, and the anodes 4 of at least two edge sub-pixels of the same color are electrically connected to each other to form a merged sub-pixel unit; the orthographic projection of the shielding member 2 on the display substrate 1 covers at least part of the edge sub-pixels P in the merged sub-pixel unit. Specifically, the edge sub-pixels P can be divided into red sub-pixels, green sub-pixels and blue sub-pixels. By adopting a method of synchronously driving multiple edge sub-pixels P of the same color, it is ensured that multiple merged sub-pixel units connected by the anodes can be lit or extinguished at the same time. Therefore, in the actual display process, the edge sub-pixels P in each merged sub-pixel unit can be regarded as a group of synchronous drives and driven synchronously. The shielding member 2 can specifically block part of the edge sub-pixels P in the merged sub-pixel unit. Part of the edge sub-pixels P is not blocked, which will not cause the entire merged sub-pixel unit to be blocked and unable to emit light, affecting the display effect. Optionally, each edge sub-pixel P includes a stacked anode 4, a light-emitting layer 5 and a cathode 6, and the anode 4 and the light-emitting layer 5 are arranged in the opening of the pixel definition layer to limit the pixel aperture ratio.

[0035] In order to realize the synchronous driving of the edge sub-pixels P of the same color in the merged sub-pixel unit, please refer to Figure 5 The display substrate 1 includes an array layer 3, which includes multiple pixel circuits. Each merging sub-pixel unit is connected to a different pixel circuit. It can be understood that each merging sub-pixel unit is connected to a different pixel circuit, that is, each merging sub-pixel unit is controlled to emit light through a different pixel circuit, and the pixel circuit can control multiple edge sub-pixels P in a merging sub-pixel unit to emit light or turn off at the same time.

[0036] In some optional embodiments, see Figure 4 and Figure 5 The shielding member 2 can be separately provided on the light-emitting side of the non-display area NA to form a black ink layer, or can be provided on the same layer as the touch layer 7 .

[0037] Specifically, to simplify the manufacturing process of the display panel, please refer to Figure 5The display panel in the embodiment of the present invention further includes a touch layer 7, which is provided on the light-emitting side of the display substrate 1, and the shielding member 2 is provided on the same layer as the touch layer 7. That is, the shielding member 2 and the touch layer 7 can be formed in the same process, thereby improving the jagged edges of the non-display area NA of the display panel and ensuring brightness uniformity without adding an additional process for making the shielding member 2, thereby avoiding adding an additional process flow for making the shielding member 2, thereby reducing production costs. Optionally, the touch layer 7 is provided on the side of the cathode 6 facing away from the cathode 6, and an encapsulation layer is provided between the touch layer 7 and the cathode 6 to prevent water vapor from invading the display substrate.

[0038] Specifically, the touch layer 7 includes a touch electrode layer 71, an insulating layer 72, and a bridge layer 73 stacked perpendicular to the plane of the display substrate 1. The shielding member 2 and the bridge layer 73 are provided on the same layer. The touch electrode layer 71 includes multiple touch electrodes that are insulated from each other. The insulating layer 72 is provided with multiple vias at intervals. The bridge layer 73 connects adjacent touch electrodes through the vias.

[0039] Optionally, the cross-bridge connection layer 73 includes at least one of an aluminum metal layer and a titanium-aluminum-titanium composite metal layer, and the shielding member 2 is set to a metal layer prepared by the same process as the cross-bridge connection layer 73, and the edge sub-pixels at the edge of the non-display area NA are blocked by the shielding member 2 set in the same layer as the cross-bridge connection layer 73.

[0040] In some optional embodiments, see Figure 2 Multiple merged sub-pixel units of different colors form edge pixel groups QA. The orthographic projections of each edge pixel group QA on the display substrate 1 are rectangular and arranged in rows and columns. Providing a rectangular structure for the edge pixel groups QA facilitates the close arrangement of the edge sub-pixel units P. However, when the edge pixel groups QA form a rectangular structure, if the outer contour of the non-display area NA is curved, the edge pixel groups QA will inevitably protrude toward the non-display area NA, resulting in noticeable concave and convex lines, which in turn can cause jagged stripes at the edges of the non-display area NA.

[0041] For further information, see Figure 3 The edge pixel group QA includes a protruding portion that protrudes toward the non-display area NA, and the orthographic projection of the shielding member 2 on the display substrate 1 at least partially covers the edge sub-pixels P within the protruding portion. By positioning the shielding member 2 on the light-emitting side of the display substrate 1 and covering the edge sub-pixels P within the protruding portion, light emitted by the edge sub-pixels P within the protruding portion can be prevented from transmitting to the light-emitting surface of the display substrate 1, or the amount of light transmitted to the display substrate 1 is reduced, thereby reducing the luminance of the display area corresponding to the edge sub-pixels P, thereby ensuring image display at the edge of the non-display area NA.

[0042] Since the image display at the edge of the non-display area NA can be controlled by the shape of the shielding member 2, the edge sub-pixel P in the edge pixel group QA to be blocked can be selected by setting the shape of the shielding member 2. Therefore, when the outer contour of the non-display area NA is a curve, the shape of the shielding member 2 can be reasonably set to fit the outer contour of the non-display area NA as much as possible, while ensuring that the positive projection of the shielding member 2 on the display substrate 1 and the contour line of the first display interval are located within the interval between each edge sub-pixel P, so as to achieve a smooth transition of the edge area of ​​the non-display area NA.

[0043] In some optional embodiments, see Figure 1 and Figure 6 , the first display area AA1 is arranged around the non-display area NA, and at least one side of the edge contour of the non-display area NA is a curved edge. Due to the actual manufacturing process of the display panel, in order to achieve different functions and appearance requirements, the non-display area NA may be set at different positions on the display substrate 1, for example, in order to realize the placement of devices such as fingerprint recognition elements, face recognition elements or under-screen cameras, the non-display area NA is set on the upper side of the display panel, or in order to realize the internal wiring of the display panel, the non-display area NA is set at the corner position of the display panel. When the non-display area NA is located in any area of ​​the display substrate 1, the edge area of ​​the non-display area NA can be covered with a shielding member 2 to reduce the jagged feeling at the edge of the non-display area NA caused by the low pixel density of the first display area AA1 and ensure its brightness uniformity.

[0044] Furthermore, the non-display area NA is provided with a through hole or a blind hole, and the through hole or the blind hole is in a circular or elliptical shape. Considering that the non-display area NA is not only provided with a camera, but may also integrate different electrical components to integrate multiple functions, the through hole or the blind hole can be set to be a circular or elliptical shape according to the use requirements. Similarly, when the outer contour of the non-display area NA is set to be a circular or elliptical shape, the edge area of ​​the non-display area NA can still be covered with a shielding member 2 to reduce the jagged feeling caused by the low pixel density of the first display area AA1 at the edge of the non-display area NA and ensure its brightness uniformity, thereby improving the display effect of the display panel.

[0045] An embodiment of the present invention also provides a display device, including a display panel and an optical element. The display panel is the display panel in the above embodiment. The optical element and the first display area AA1 of the display panel are arranged correspondingly. The optical element can specifically be an element for realizing functions such as under-screen fingerprint recognition and face recognition.

[0046] The display device provided in the embodiment of the present invention has the technical effects of the technical solution of the display panel in any of the above embodiments. The structures and explanations of terms that are the same as or corresponding to the above embodiments are not repeated here. The display device provided in the embodiment of the present invention can be a mobile phone or any electronic product with a display function, including but not limited to the following categories: televisions, laptops, desktop monitors, tablet computers, digital cameras, smart bracelets, smart glasses, car displays, medical equipment, industrial control equipment, touch interactive terminals, etc., and the embodiment of the present invention does not specifically limit this.

[0047] The above is only a specific embodiment of the present invention. Those skilled in the art can clearly understand that for the convenience and simplicity of description, the specific working processes of the systems, modules and units described above can refer to the corresponding processes in the aforementioned method embodiments, and will not be repeated here. It should be understood that the protection scope of the present invention is not limited to this. Any person skilled in the art can easily think of various equivalent modifications or replacements within the technical scope disclosed by the present invention, and these modifications or replacements should be covered within the protection scope of the present invention.

[0048] It should also be noted that the exemplary embodiments described herein describe methods or systems based on a series of steps or devices. However, the present invention is not limited to the order of the steps described above. In other words, the steps may be performed in the order described in the embodiments, or in a different order, or several steps may be performed simultaneously.

Claims

1. A display panel, characterized in that: include: A display substrate comprising a first display area, a second display area at least partially surrounding the first display area, and a non-display area adjacent to the first display area, the first display area being provided with a plurality of edge sub-pixels adjacent to and spaced apart from the non-display area, each of the edge sub-pixels comprising an anode, the anodes of at least two edge sub-pixels of the same color being electrically connected to form a merged sub-pixel unit, a plurality of merged sub-pixel units of different colors forming an edge pixel group, an orthographic projection of each edge pixel group on the display substrate being rectangular and arranged in rows and columns, and the edge pixel group comprising a protrusion protruding toward the non-display area; a shielding member disposed on the light-emitting side of the display substrate corresponding to the distribution area of ​​the plurality of edge sub-pixels, wherein an orthographic projection of the shielding member on the display substrate at least partially covers the edge sub-pixels within the protruding portion, and an orthographic projection of the shielding member on the display substrate and a contour line of the first display interval are located within a gap between the edge sub-pixels; A touch layer is provided on the light-emitting side of the display substrate, and the shielding member is provided on the same layer as the touch layer.

2. The display panel according to claim 1, wherein: The display substrate includes an array layer, the array layer includes a plurality of pixel circuits, and each of the merging sub-pixel units is connected to a different pixel circuit.

3. The display panel according to claim 1, wherein: The touch layer includes a touch electrode layer, an insulating layer, and a bridge connection layer stacked in a direction perpendicular to the plane where the display substrate is located. The shielding member and the bridge connection layer are arranged on the same layer.

4. The display panel according to claim 3, wherein: The cross-bridge connection layer includes at least one of an aluminum metal layer and a titanium-aluminum-titanium composite metal layer.

5. The display panel according to claim 1, wherein: The first display area is arranged around the non-display area, and at least one side of an edge contour of the non-display area is a curved side.

6. The display panel according to claim 5, wherein: The non-display area is provided with a through hole or a blind hole, and the through hole or the blind hole is in a circular or elliptical shape.

7. A display device, characterized in that: include: The display panel is the display panel according to any one of claims 1 to 6; The optical element is arranged corresponding to the first display area of ​​the display panel.

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