Display substrate and display device

Abstract

The invention discloses a display substrate and a display device. The display substrate comprises a first display area and a second display area, the light transmittance of the second display area is larger than that of the first display area, the display substrate comprises a substrate, and a light-emitting structure layer, a packaging structure layer and a color film structure layer which are sequentially stacked in the direction away from the substrate, the color film structure layer comprises a light filtering layer and a light blocking layer, the light blocking layer comprises a plurality of light filtering material layers which are sequentially stacked in the direction away from the substrate, the light filtering material layers are configured to transmit visible light of a specific color, and at least part of the light filtering material layers transmit visible light of different colors; the process can be simplified, and production cost is reduced.

Description

Technical Field

[0001] This article relates to but is not limited to the field of display technology, and specifically to a display substrate and a display device. Background Art

[0002] Organic Light Emitting Diode (OLED) and Quantum-dot Light Emitting Diode (QLED) are active light-emitting display devices with the advantages of self-luminescence, wide viewing angle, high contrast, low power consumption, extremely high response speed, thinness, bendability and low cost. With the continuous development of display technology, flexible display devices (Flexible Display) using OLED or QLED as light-emitting devices and thin film transistors (TFT) for signal control have become the mainstream products in the current display field.

[0003] At present, full-screen display panels are becoming more and more popular among consumers, and full-screen has become the main display mode for mobile phones and other display devices. In order to achieve full-screen display, the design space of components such as cameras, infrared sensors, and earpieces is compressed, and the cameras, infrared sensors and other components are placed under the display screen, which has become the main means to solve the problem of achieving full-screen display. In order to achieve full-screen display as much as possible, the area of ​​the display screen corresponding to components such as cameras and infrared sensors must also be displayed. Summary of the invention

[0004] The following is a summary of the subject matter described in detail herein. This summary is not intended to limit the scope of the claims.

[0005] The present disclosure provides a display substrate and a display device, which can simplify the process and reduce the production cost.

[0006] In one aspect, the present disclosure provides a display substrate, comprising a first display area and a second display area, wherein the light transmittance of the second display area is greater than the light transmittance of the first display area, and the second display area is located at least on one side of the first display area; The display substrate comprises a base, and a light emitting structure layer, a packaging structure layer and a color filter structure layer stacked in sequence along a direction away from the base, the light emitting structure layer comprises a pixel definition layer and a spacer layer stacked in sequence along a direction away from the base, the color filter structure layer comprises a filter layer and a light blocking layer, and at least part of the light blocking layer is located between adjacent filter layers; In the second display area, a first light-transmitting hole is provided in the pixel definition layer and the spacer layer, a second light-transmitting hole is provided in the light-blocking layer, and an orthographic projection of the first light-transmitting hole on the substrate overlaps at least partially with an orthographic projection of the second light-transmitting hole on the substrate; The light blocking layer includes a plurality of filter material layers stacked in sequence along a direction away from the substrate, the plurality of filter material layers are configured to transmit visible light of a specific color, and at least some of the plurality of filter material layers transmit visible light of different colors.

[0007] In an exemplary embodiment, the light-blocking layer includes a first filter material layer, a second filter material layer, and a third filter material layer stacked in sequence along a direction away from the substrate, the color of visible light transmitted by the first filter material layer, the color of visible light transmitted by the second filter material layer, and the color of visible light transmitted by the third filter material layer are different from each other, and one of the first filter material layer, the second filter material layer, and the third filter material layer is connected to an adjacent filter layer to form an integral structure, and the same material is used; or, the light-blocking layer includes a first filter material layer and a second filter material layer stacked in sequence along a direction away from the substrate, the color of visible light transmitted by the first filter material layer and the color of visible light transmitted by the second filter material layer are different from each other, and one of the first filter material layer and the second filter material layer is connected to an adjacent filter layer to form an integral structure, and the same material is used.

[0008] In an exemplary embodiment, the orthographic projection of the first light-transmitting hole on the substrate near the substrate covers the orthographic projection of the corresponding second light-transmitting hole on the substrate, the minimum distance between the edge of the orthographic projection of the first light-transmitting hole on the substrate near the substrate and the edge of the orthographic projection of the corresponding second light-transmitting hole on the substrate is L2, and the minimum distance between the edge of the orthographic projection of the first light-transmitting hole on the substrate near the substrate and the edge of the orthographic projection of the corresponding second light-transmitting hole on the substrate is in the range of 0um < L2 ≤ 2um; or, the orthographic projection of the first light-transmitting hole on the substrate near the substrate is located in the orthographic projection of the corresponding second light-transmitting hole on the substrate, the minimum distance between the edge of the orthographic projection of the first light-transmitting hole on the substrate near the substrate and the edge of the orthographic projection of the corresponding second light-transmitting hole on the substrate is L2, and the minimum distance between the edge of the orthographic projection of the first light-transmitting hole on the substrate near the substrate and the edge of the orthographic projection of the corresponding second light-transmitting hole on the substrate is in the range of 0um < L2 ≤ 2um; or, the orthographic projection of the first light-transmitting hole on the substrate near the substrate completely overlaps with the orthographic projection of the corresponding second light-transmitting hole on the substrate.

[0009] In an exemplary embodiment, a pixel opening is provided in the pixel definition layer, and the orthographic projection of the pixel opening on the substrate close to the side of the substrate is located in the orthographic projection of the corresponding filter layer on the substrate, and the minimum distance between the edge of the orthographic projection of the pixel opening on the substrate close to the side of the substrate and the edge of the orthographic projection of the corresponding filter layer on the substrate is L1, and the minimum distance between the edge of the orthographic projection of the pixel opening on the substrate close to the side of the substrate and the edge of the orthographic projection of the corresponding filter layer on the substrate is in the range of: 4um≤L1≤6um.

[0010] In an exemplary embodiment, the second light-transmitting hole includes a first channel and a second channel connected to each other, the first channel is arranged on a side of the second channel close to the substrate, the orthographic projection of the first channel on the substrate overlaps at least partially with the orthographic projection of the second channel on the substrate, and the second channel exposes at least a portion of the filter material layer around the first channel.

[0011] In an exemplary embodiment, the orthographic projection of the first channel on the substrate is located in the orthographic projection of the second channel on the substrate, the minimum distance between the edge of the orthographic projection of the first channel on the substrate and the edge of the orthographic projection of the second channel on the substrate is L3, and the range of the minimum distance between the edge of the orthographic projection of the first channel on the substrate and the edge of the orthographic projection of the second channel on the substrate is: 2um≤L3≤6um.

[0012] In an exemplary embodiment, the cross-section of the first channel in a direction perpendicular to the substrate is rectangular; or, the cross-section of the first channel in a direction perpendicular to the substrate is a right trapezoid, and the slope angle of the side of the first channel is greater than or equal to 50 degrees and less than or equal to 80 degrees.

[0013] In an exemplary embodiment, it also includes a touch structure layer and a first protective layer, the touch structure layer is stacked between the packaging structure layer and the color film structure layer, the first protective layer is arranged between the touch structure layer and the color film structure layer, the touch structure layer includes a touch insulation layer, a first refractive layer is arranged on the surface of the touch insulation layer away from the substrate, the first protective layer covers the first refractive layer, the refractive index of the first refractive layer is less than the refractive index of the first protective layer, a third light-transmitting hole is arranged in the first refractive layer, and the orthographic projection of the third light-transmitting hole on the substrate overlaps with at least part of the orthographic projection of the first light-transmitting hole on the substrate and at least part of the orthographic projection of the second light-transmitting hole on the substrate.

[0014] In an exemplary embodiment, the cross section of the first refractive layer in a direction perpendicular to the substrate is a right trapezoid, and the slope angle of the side of the first refractive layer close to the third light-transmitting hole is greater than or equal to 50 degrees and less than or equal to 80 degrees; and / or the thickness of the first refractive layer is greater than or equal to 1.5 microns and less than or equal to 3 microns; and / or the refractive index of the first refractive layer is less than 1.65.

[0015] In an exemplary embodiment, the orthographic projection of the third light-transmitting hole on the substrate near the side of the substrate is located in the orthographic projection of the second light-transmitting hole on the substrate near the side of the substrate, the minimum distance between the edge of the orthographic projection of the third light-transmitting hole on the substrate near the side of the substrate and the edge of the orthographic projection of the second light-transmitting hole on the substrate near the side of the substrate is L4, and the range of the minimum distance between the edge of the orthographic projection of the third light-transmitting hole on the substrate near the side of the substrate and the edge of the orthographic projection of the second light-transmitting hole on the substrate near the side of the substrate is: 0um﹤L4≤1um; or, the orthographic projection of the third light-transmitting hole on the substrate near the side of the substrate is L4≤1um. The orthographic projection covers the orthographic projection of the second light-transmitting hole on the substrate near the side of the substrate, the minimum distance between the edge of the orthographic projection of the third light-transmitting hole on the substrate near the side of the substrate and the edge of the orthographic projection of the second light-transmitting hole on the substrate near the side of the substrate is L4, and the minimum distance between the edge of the orthographic projection of the third light-transmitting hole on the substrate near the side of the substrate and the edge of the orthographic projection of the second light-transmitting hole on the substrate near the side of the substrate is in the range of: 0um﹤L4≤1um; or, the orthographic projection of the third light-transmitting hole on the substrate near the side of the substrate completely overlaps with the orthographic projection of the second light-transmitting hole on the substrate near the side of the substrate.

[0016] In an exemplary embodiment, the encapsulation structure layer includes a first inorganic encapsulation layer, at least a portion of the first inorganic encapsulation layer is arranged in the first light-transmitting hole, a second refractive layer is arranged in the first light-transmitting hole, the second refractive layer is arranged on the side of the first inorganic encapsulation layer away from the substrate, the second refractive layer is in contact with the first inorganic encapsulation layer, and the refractive index of the second refractive layer is greater than the refractive index of the first inorganic encapsulation layer.

[0017] In an exemplary embodiment, the refractive index of the second refractive layer is greater than 1.65.

[0018] In an exemplary embodiment, a first protective layer and a second protective layer are further included, the first protective layer is arranged on the surface of the color filter structure layer close to the substrate, the second protective layer is arranged on the surface of the color filter structure layer away from the substrate, at least part of the second protective layer is arranged in the second light-transmitting hole, a groove is arranged on the surface of the first protective layer away from the substrate, a third refractive layer is arranged in the groove, the orthographic projection of the third refractive layer on the substrate overlaps at least part of the orthographic projection of the second light-transmitting hole on the substrate close to the substrate, the second protective layer in the second light-transmitting hole covers the surface of the third refractive layer away from the substrate, the refractive index of the third refractive layer is smaller than the refractive index of the second protective layer, and the refractive index of the third refractive layer is greater than the refractive index of the first protective layer.

[0019] In an exemplary embodiment, the third refractive layer has an inverted trapezoidal cross section in a direction perpendicular to the substrate, and a slope angle of a side of the third refractive layer is greater than or equal to 50 degrees and less than or equal to 80 degrees; and / or, a thickness of the third refractive layer is greater than or equal to 1 micron and less than or equal to 4 microns; and / or, a refractive index of the third refractive layer is greater than 1.65; and / or, an orthographic projection of a side of the third refractive layer close to the substrate on the substrate is located in an orthographic projection of a side of the second light-transmitting hole close to the substrate on the substrate.

[0020] On the other hand, the present disclosure further provides a display device, comprising the aforementioned display substrate.

[0021] The disclosed embodiment shows that the substrate includes a first light filter material layer, a second light filter material layer and a third light filter material layer through a light blocking layer, and one of the first light filter material layer, the second light filter material layer and the third light filter material layer is connected to an adjacent light filter layer to form an integrated structure, which can simplify the process steps and reduce production costs.

[0022] The display substrate of the disclosed embodiment forms a second light-transmitting hole in the light-blocking layer to improve the light transmittance of the second display area with a large viewing angle, thereby increasing the field of view (FOV) of the second display area.

[0023] The disclosed embodiment displays that the orthographic projection of the substrate through the first hole on the base is located within the orthographic projection of the second hole on the base, so that light of a specific color with a large viewing angle in the second display area can pass through the second hole and then pass through the first filter material layer around the first hole exposed by the second hole, thereby improving the transmittance of light with a large viewing angle in the second display area and increasing the field of view (FOV) of the second display area.

[0024] The display substrate of the disclosed embodiment directs the incident wide-angle light to be emitted toward the first light-transmitting hole through the first refractive layer, thereby improving the transmittance of the wide-angle light in the second display area and increasing the field of view (FOV) of the second display area.

[0025] The display substrate of the disclosed embodiment directs the incident wide-angle light toward the direction of the photosensor through the second refractive layer, thereby improving the transmittance of the wide-angle light in the second display area and increasing the field of view (FOV) of the second display area.

[0026] The display substrate of the disclosed embodiment directs the incident wide-angle light to be emitted toward the first light-transmitting hole through the third refractive layer, thereby improving the transmittance of the wide-angle light in the second display area and increasing the field of view (FOV) of the second display area.

[0027] The disclosed embodiment shows that the cross-section of the substrate through the first channel at right angles to the substrate is in the shape of a right trapezoid, and the side of the first channel directs the incident wide-angle light to be emitted in the direction of the first light-transmitting hole, thereby increasing the transmittance of the wide-angle light in the second display area and improving the field of view (FOV) of the second display area.

[0028] The disclosed embodiment shows that the substrate includes a first filter material layer and a second filter material layer through a light-blocking layer, and one of the first filter material layer and the second filter material layer is connected to an adjacent filter layer to form an integrated structure, which can simplify the process steps and reduce production costs.

[0029] Other aspects will be apparent upon reading and understanding the drawings and detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The accompanying drawings are used to provide an understanding of the technical solution of the present disclosure and constitute a part of the specification. Together with the embodiments of the present disclosure, they are used to explain the technical solution of the present disclosure and do not constitute a limitation on the technical solution of the present disclosure.

[0031] Figure 1 is a schematic cross-sectional structure diagram of a second display area of ​​a related display substrate; Figure 2 is a schematic cross-sectional structure diagram of a first display area of ​​a related display substrate; Figure 3 It is a schematic diagram of a planar structure of a display substrate; Figure 4a It is a schematic cross-sectional structure diagram of a second display area of ​​a display substrate according to an embodiment of the present disclosure; Figure 4b It is a schematic cross-sectional structure diagram of a first display area of ​​a display substrate according to an embodiment of the present disclosure; Figure 5 It is a schematic cross-sectional structure diagram of a second display area of ​​another display substrate according to an embodiment of the present disclosure; Figure 6 It is a schematic cross-sectional structure diagram of a second display area of ​​another display substrate according to an embodiment of the present disclosure; Figure 7 It is a schematic cross-sectional structure diagram of a second display area of ​​another display substrate according to an embodiment of the present disclosure; Figure 8 It is a schematic cross-sectional structure diagram of a second display area of ​​another display substrate according to an embodiment of the present disclosure; Fig. 9 It is a schematic cross-sectional structure diagram of a second display area of ​​another display substrate according to an embodiment of the present disclosure; Fig.10 It is a schematic cross-sectional structure diagram of a second display area of ​​another display substrate according to an embodiment of the present disclosure; Fig.11 It is a schematic cross-sectional structure diagram of a second display area of ​​another display substrate according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solutions and advantages of the present disclosure clearer, the embodiments of the present disclosure will be described in detail in conjunction with the accompanying drawings below. Note that the embodiments can be implemented in multiple different forms. A person of ordinary skill in the art can easily understand the fact that the methods and contents can be transformed into various forms without departing from the purpose and scope of the present disclosure. Therefore, the present disclosure should not be interpreted as being limited to the contents described in the following embodiments. In the absence of conflict, the embodiments in the present disclosure and the features in the embodiments can be arbitrarily combined with each other.

[0033] The proportions of the drawings in this disclosure can be used as a reference in the actual process, but are not limited to this. For example: the width-to-length ratio of the channel, the thickness and spacing of each film layer, the width and spacing of each signal line can be adjusted according to actual needs. The number of pixels in the display substrate and the number of sub-pixels in each pixel are not limited to the numbers shown in the figures. The drawings described in this disclosure are only structural schematic diagrams, and one method of this disclosure is not limited to the shapes or values ​​shown in the drawings.

[0034] In the present specification, ordinal numbers such as “first”, “second” and “third” are provided to avoid confusion among constituent elements, and are not intended to limit the number.

[0035] In this specification, for the sake of convenience, the words and phrases indicating the orientation or positional relationship, such as "middle", "upper", "lower", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., are used to illustrate the positional relationship of the constituent elements with reference to the drawings. This is only for the convenience of describing this specification and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation of the present disclosure. The positional relationship of the constituent elements is appropriately changed according to the direction in which each constituent element is described. Therefore, it is not limited to the words and phrases described in the specification, and can be appropriately replaced according to the situation.

[0036] In this specification, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate, or the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this disclosure can be understood according to specific circumstances.

[0037] In this specification, a transistor refers to an element including at least three terminals: a gate electrode, a drain electrode, and a source electrode. The transistor has a channel region between a drain electrode (drain electrode terminal, drain region, or drain electrode) and a source electrode (source electrode terminal, source region, or source electrode), and current can flow through the drain electrode, the channel region, and the source electrode. Note that in this specification, the channel region refers to a region through which current mainly flows.

[0038] In this specification, the first electrode may be a drain electrode and the second electrode may be a source electrode, or the first electrode may be a source electrode and the second electrode may be a drain electrode. In the case of using transistors with opposite polarities or when the current direction changes during circuit operation, the functions of the "source electrode" and the "drain electrode" are sometimes interchanged. Therefore, in this specification, the "source electrode" and the "drain electrode" may be interchanged, and the "source terminal" and the "drain terminal" may be interchanged.

[0039] In this specification, "electrical connection" includes the case where components are connected together through an element having some electrical function. There is no particular limitation on the "element having some electrical function" as long as it can transmit and receive electrical signals between the connected components. Examples of "element having some electrical function" include not only electrodes and wiring, but also switching elements such as transistors, resistors, inductors, capacitors, and other elements having various functions.

[0040] In this specification, "parallel" means a state where the angle formed by two straight lines is greater than -10° and less than 10°, and therefore, also includes a state where the angle is greater than -5° and less than 5°. In addition, "perpendicular" means a state where the angle formed by two straight lines is greater than 80° and less than 100°, and therefore, also includes a state where the angle is greater than 85° and less than 95°.

[0041] In this specification, "film" and "layer" may be interchanged. For example, "conductive layer" may be replaced by "conductive film". Similarly, "insulating film" may be replaced by "insulating layer".

[0042] The triangles, rectangles, trapezoids, pentagons or hexagons in this specification are not in the strict sense, and may be approximate triangles, rectangles, trapezoids, pentagons or hexagons, etc. There may be some small deformations caused by tolerances, and there may be chamfers, arc edges and deformations.

[0043] The term "about" in the present disclosure refers to a numerical value that is not strictly limited to allow for process and measurement errors.

[0044] Figure 1 FIG. 1 is a schematic diagram of a cross-sectional structure of a second display area of ​​a related display substrate. Figure 1 As shown, on a plane perpendicular to the display substrate, the second display area of ​​the display substrate may include: a substrate 101', and a circuit structure layer 102', a light-emitting structure layer, a packaging structure layer 103', a buffer layer 104', a touch structure layer, a first protective layer 106', a color film structure layer 107' and a second protective layer 108' sequentially arranged on the substrate 101'.

[0045] In an exemplary embodiment, the light emitting structure layer includes a light emitting device, and the light emitting device includes an anode 11', a light emitting functional layer 14' and a cathode 15' arranged in sequence in a direction away from the substrate 101'. The encapsulation structure layer 103' may include a first inorganic encapsulation layer 161', an organic encapsulation layer 163' and a second inorganic encapsulation layer 162' stacked in sequence in a direction away from the substrate 101'. The touch control structure layer includes a connection electrode 171', a touch control insulating layer 105' and a touch control electrode 172' arranged in sequence in a direction away from the substrate 101', and adjacent touch control electrodes 172' are connected to the same connection electrode 171' through different touch control connection holes. The color filter structure layer 107' includes a filter layer 182' and a light blocking layer 181'. The orthographic projection of the filter layer 182' on the substrate overlaps at least part of the orthographic projection of the light emitting device on the substrate. The filter layer 182' is configured to transmit light of a specific color. The light blocking layer 181' is located between adjacent filter layers 182'. The light blocking layer 181' is configured to prevent light transmission and prevent light from adjacent sub-pixels from crosstalking with each other. The light blocking layer 181' uses a black matrix (BM).

[0046] In an exemplary embodiment, the display substrate of the disclosed embodiment may further include a pixel definition layer 12' and a spacer layer 13', wherein the pixel definition layer 12' is disposed on the side of the anode 11' away from the substrate 101', and a plurality of pixel openings 121' are disposed in the pixel definition layer 12', wherein the pixel openings 121' expose at least a portion of the surface of the anode 11', and the orthographic projection of the pixel openings 121' on the substrate 101' overlaps at least a portion of the orthographic projection of the corresponding filter layer 182' on the substrate 101'. The spacer layer 13' is disposed on the side of the pixel definition layer 12' away from the substrate 101', and the spacer layer 13' is configured to support a mask for evaporating the light-emitting functional layer material in a subsequent process.

[0047] In an exemplary embodiment, the opening area of ​​the second display area includes a first light-transmitting hole 21' and a second light-transmitting hole 22', the first light-transmitting hole 21' is arranged on the side of the second light-transmitting hole 22' close to the substrate, and the orthographic projection of the first light-transmitting hole 21' on the substrate overlaps at least part of the orthographic projection of the second light-transmitting hole 22' on the substrate. The first light-transmitting hole 21' is located in the pixel definition layer 12 and the spacer layer 13, and the pixel definition layer 12' and the spacer layer 13' in the first light-transmitting hole 21' are etched away. The second light-transmitting hole 22' is located in the light-blocking layer 181' of the color filter structure layer 107', the light-blocking layer 181' in the second light-transmitting hole 22' is etched away, and a second protective layer 108' is arranged in the second light-transmitting hole 22'.

[0048] Figure 2 FIG. 1 is a schematic diagram of a cross-sectional structure of a first display area of ​​a related display substrate. Figure 2 As shown, on a plane perpendicular to the display substrate, the second display area of ​​the display substrate may include: a substrate 101', and a circuit structure layer 102', a light-emitting structure layer, a packaging structure layer 103', a buffer layer 104', a touch structure layer, a first protective layer 106', a color film structure layer 107' and a second protective layer 108' sequentially arranged on the substrate 101'.

[0049] In an exemplary embodiment, the substrate 101', circuit structure layer 102', light emitting structure layer, encapsulation structure layer 103', buffer layer 104', touch structure layer, first protective layer 106' and second protective layer 108' of the first display area are substantially the same as the substrate 101', circuit structure layer 102', light emitting structure layer, encapsulation structure layer 103', color film structure layer 107', buffer layer 104', touch structure layer, first protective layer 106' and second protective layer 108' of the second display area, and the disclosure will not repeat them here. Among them, the light blocking layer 181' of the first display area adopts a black matrix (BM).

[0050] The inventors of the present application have found through research that the light-blocking layer 181' of the color filter structure layer 107' of the relevant display substrate adopts a black matrix (BM), which is different from the material of the light filter layer 182'. In the process of preparing the color filter structure layer 107', different processes are required to form the light-blocking layer 181' and the light filter layer 182' respectively, which increases the process steps and improves the production cost.

[0051] In addition, in order to improve the transmittance of the second display area, the relevant display substrate needs to form a second light-transmitting hole 22' in the light-blocking layer 181' of the color film structure layer 107' of the second display area. However, in order to reduce the reflectivity of the second display area, the area of ​​the orthographic projection of the second light-transmitting hole 22' on the substrate is small, resulting in that the wide-angle light cannot pass through the opening area of ​​the second display area. Compared with the display substrate using a polarizer structure, the light-blocking layer 181' of the relevant display substrate will block the wide-angle light from entering the photosensitive sensor, thereby reducing the transmittance of the wide-angle light in the second display area. For example, the transmittance of the display substrate using a polarizer structure for incident light at 55 degrees is 50%, and the transmittance of the relevant display substrate for incident light at 55 degrees is 5%. The present disclosure provides a display substrate, comprising a first display area and a second display area, wherein the light transmittance of the second display area is greater than the light transmittance of the first display area, and the second display area is located at least on one side of the first display area; The display substrate comprises a base, and a light emitting structure layer, a packaging structure layer and a color filter structure layer stacked in sequence along a direction away from the base, the light emitting structure layer comprises a pixel definition layer and a spacer layer stacked in sequence along a direction away from the base, the color filter structure layer comprises a filter layer and a light blocking layer, and at least part of the light blocking layer is located between adjacent filter layers; In the second display area, a first light-transmitting hole is provided in the pixel definition layer and the spacer layer, a second light-transmitting hole is provided in the light-blocking layer, and an orthographic projection of the first light-transmitting hole on the substrate overlaps at least partially with an orthographic projection of the second light-transmitting hole on the substrate; The light blocking layer includes a plurality of filter material layers stacked in sequence along a direction away from the substrate, the plurality of filter material layers are configured to transmit visible light of a specific color, and at least some of the plurality of filter material layers transmit visible light of different colors.

[0052] In an exemplary embodiment, the light-blocking layer includes a first filter material layer, a second filter material layer, and a third filter material layer stacked in sequence along a direction away from the substrate, the color of visible light transmitted by the first filter material layer, the color of visible light transmitted by the second filter material layer, and the color of visible light transmitted by the third filter material layer are different from each other, and one of the first filter material layer, the second filter material layer, and the third filter material layer is connected to an adjacent filter layer to form an integral structure, and the same material is used; or, the light-blocking layer includes a first filter material layer and a second filter material layer stacked in sequence along a direction away from the substrate, the color of visible light transmitted by the first filter material layer and the color of visible light transmitted by the second filter material layer are different from each other, and one of the first filter material layer and the second filter material layer is connected to an adjacent filter layer to form an integral structure, and the same material is used.

[0053] The solution of this embodiment is described below by means of some examples.

[0054] Figure 3 FIG. 1 is a schematic diagram of a planar structure of a display substrate. Figure 3 As shown, the display substrate includes: a display area 100 and a frame area 200 located around the display area 100. The display area 100 may include: a first display area 110 and a second display area 120, and the transmittance of the second display area 120 is greater than the transmittance of the first display area 110. The second display area 120 may be located on at least one side of the first display area 110, for example, the second display area 120 may be arranged around the first display area 110. The first display area 110 may also be referred to as a normal display area. The second display area 120 may also be referred to as a translucent display area, which may also be referred to as an under-screen camera (English: Full Display with Camera; abbreviated: FDC) area. The translucent display area and the normal display area both include a plurality of sub-pixels, each of which includes a light-emitting device, so that both the normal display area and the translucent display area can display images. However, this embodiment is not limited to this.

[0055] In an exemplary embodiment, a light sensor (e.g., a camera) and other hardware may be disposed on the backlight side of the display substrate, and the orthographic projection of the light-sensitive surface of the light-sensitive sensor on the display area 100 may be located within the light-transmitting display area, and ambient light may be incident on the light-sensitive surface of the light-sensitive sensor through the light-transmitting display area, thereby increasing the screen-to-body ratio of the display device. The backlight side of the display substrate refers to the side away from the light emitted by the display substrate.

[0056] In an exemplary embodiment, the second display area 120 may be located at the top center of the display substrate. However, this embodiment is not limited to this. For example, the second display area 120 may be located at other positions such as the upper left corner or the upper right corner of the display substrate.

[0057] In an exemplary embodiment, the display area 100 may be a rectangle, for example, a rounded rectangle. The second display area 120 may be a rectangle or a rounded rectangle. However, this embodiment is not limited to this. For example, the second display area may be a circle or an ellipse, or other polygons such as a rhombus or a pentagon.

[0058] In an exemplary embodiment, the display area 100 may include a plurality of pixel units arranged in a matrix, and at least one pixel unit may include a first sub-pixel, a second sub-pixel, and a third sub-pixel. Each sub-pixel may include a light-emitting device and a pixel driving circuit connected thereto, the pixel driving circuit being configured to output a corresponding current to the light-emitting device connected thereto, and the light-emitting device being configured to emit light of corresponding brightness in response to the current output by the pixel driving circuit connected thereto.

[0059] In an exemplary embodiment, the first sub-pixel may be a red sub-pixel (R) emitting red light, the second sub-pixel P2 may be a green sub-pixel (G) emitting green light, and the third sub-pixel P3 may be a blue sub-pixel (B) emitting blue light. The three sub-pixels may be arranged in parallel horizontally or vertically, which is not limited in the present disclosure.

[0060] In an exemplary embodiment, the shape of the sub-pixel may be a circle. However, this embodiment is not limited to this. For example, the shape of the sub-pixel may also be a rectangle, a rhombus, a pentagon, a hexagon or other polygonal shapes.

[0061] In an exemplary embodiment, at least one pixel unit of the second display area 120 may be provided with an opening area, at least a portion of a film layer with low light transmittance (such as a pixel definition layer and a light blocking layer of a color filter structure layer) in the opening area is etched and removed to form a light-transmitting hole, and a film layer with high light transmittance (such as an organic encapsulation layer in an encapsulation structure layer) in the opening area is provided in a via hole, so that the light-transmitting hole in the opening area forms a blind hole. The opening area is configured to improve the light transmittance of the second display area 120.

[0062] Figure 4a is a schematic cross-sectional structure diagram of a second display area of ​​a display substrate according to an embodiment of the present disclosure, Figure 4a FIG. 4 illustrates a cross-sectional structure of three sub-pixels and an opening area in the second display area. Figure 4a As shown, on a plane perpendicular to the display substrate, the second display area of ​​the display substrate may include: a substrate 101, and a circuit structure layer 102, a light-emitting structure layer, a packaging structure layer 103, a buffer layer 104, a touch structure layer, a first protective layer 106, a color film structure layer 107 and a second protective layer 108 arranged in sequence on the substrate 101.

[0063] In an exemplary embodiment, the substrate 101 may be a flexible substrate or a rigid substrate. The driving circuit layer 102 may include a pixel driving circuit, and the pixel driving circuit may include a plurality of transistors and a storage capacitor. The light-emitting structure layer includes a light-emitting device, and the light-emitting device includes an anode 11, a light-emitting functional layer 14, and a cathode 15 sequentially arranged in a direction away from the substrate 101. The anode 11 is connected to the pixel driving circuit, the light-emitting functional layer 14 is connected to the anode 11, and the cathode 15 is connected to the light-emitting functional layer 14. The light-emitting functional layer 14 emits light of corresponding colors under the drive of the anode 11 and the cathode 15. The encapsulation structure layer 103 may include a first inorganic encapsulation layer 161, an organic encapsulation layer 163, and a second inorganic encapsulation layer 162 stacked in sequence in a direction away from the substrate 101. The first inorganic encapsulation layer 161 and the second inorganic encapsulation layer 162 may be made of inorganic materials, and the organic encapsulation layer 163 may be made of organic materials. The organic encapsulation layer 163 is arranged between the first inorganic encapsulation layer 161 and the second inorganic encapsulation layer 162 to form an inorganic material / organic material / inorganic material stacked structure, which can ensure that external water vapor cannot enter the light-emitting structure layer 103. The touch structure layer includes a connection electrode 171, a touch insulation layer 105, and a touch electrode 172 arranged in sequence in a direction away from the substrate 101. Adjacent touch electrodes 172 are connected to the same connection electrode 171 through different touch connection holes. The color filter structure layer 107 includes a filter layer 182 and a light-blocking layer 181. The orthographic projection of the filter layer 182 on the substrate at least partially overlaps with the orthographic projection of the light-emitting device on the substrate. The filter layer 182 is configured to transmit visible light of a specific color. At least part of the light-blocking layer 181 is located between adjacent filter layers 182. The light-blocking layer 181 is configured to block at least part of the visible light from being transmitted, thereby preventing light from adjacent sub-pixels from crosstalking with each other.

[0064] In an exemplary embodiment, the buffer layer 104 may be at least one of an inorganic material, an organic material, and a metal oxide. For example, the buffer layer 104 may be at least one of a silicon nitride compound, a silicon oxide compound, a silicon oxide nitride compound, an aluminum oxide, an acrylic resin, and an epoxy resin. The buffer layer 104 may be prepared by a process such as plasma enhanced chemical vapor deposition (PECVD), a vapor deposition process (CVD), or an atomic layer deposition process (ALD).

[0065] In an exemplary embodiment, the first protective layer 106 and the second protective layer 108 can both be organic materials, such as acrylates, epoxy resins, etc. The first protective layer 106 and the second protective layer 108 can be cured and formed using a thermal curing or photocuring process, and the light transmittance of the first protective layer 106 and the second protective layer 108 is greater than 90%.

[0066] In an exemplary embodiment, the light emitting structure layer of the display substrate of the embodiment of the present disclosure may further include a pixel definition layer 12 and a spacer layer 13. The pixel definition layer 12 is disposed on the side of the anode 11 away from the substrate 101. A plurality of pixel openings 121 are disposed in the pixel definition layer 12. The pixel openings 121 expose at least part of the surface of the anode 11. The orthographic projection of the side of the pixel opening 121 close to the substrate on the substrate 101 overlaps at least part of the orthographic projection of the corresponding filter layer 182 on the substrate 101. The spacer layer 13 is disposed on the side of the pixel definition layer 12 away from the substrate 101. The spacer layer 13 is configured to support a mask for evaporating the light emitting functional layer material in a subsequent process.

[0067] In an exemplary embodiment, the light-blocking layer 181 of the color filter structure layer 107 includes a first filter material layer 181-1, a second filter material layer 181-2, and a third filter material layer 181-3 stacked in sequence along a direction away from the substrate 101. The first filter material layer 181-1 is configured to transmit light of a first color, the second filter material layer 181-2 is configured to transmit light of a second color, and the third filter material layer 181-3 is configured to transmit light of a third color. The first color of the light transmitted by the first filter material layer 181-1, the second color of the light transmitted by the second filter material layer 181-2, and the third color of the light transmitted by the third filter material layer 181-3 are different from each other.

[0068] In an exemplary embodiment, a thickness of at least one of the first filter material layer 181 - 1 , the second filter material layer 181 - 2 , and the third filter material layer 181 - 3 is greater than or equal to 2 micrometers and less than or equal to 4 micrometers.

[0069] In an exemplary embodiment, the first filter material layer 181-1 may be a green filter configured to transmit green light; the second filter material layer 181-2 may be a red filter configured to transmit red light; the third filter material layer 181-3 may be a blue filter configured to transmit blue light; or, the first filter material layer 181-1 may be a green filter configured to transmit green light; the second filter material layer 181-2 may be a blue filter configured to transmit blue light; the third filter material layer 181-3 may be a red filter configured to transmit red light.

[0070] In an exemplary embodiment, one of the first filter material layer 181 - 1 , the second filter material layer 181 - 2 and the third filter material layer 181 - 3 is connected to the adjacent filter layer 182 to form an integral structure, and is made of the same material through the same preparation process. For example, the filter layer 182 of the red sub-pixel (R) is configured to transmit red light, the second filter material layer 181-2 of the light-blocking layer 181 is connected to the filter layer 182 of the red sub-pixel (R) to form an integrated structure, and are prepared by using the same material through the same preparation process; the filter layer 182 of the green sub-pixel (G) is configured to transmit green light, the first filter material layer 181-1 of the light-blocking layer 181 is connected to the filter layer 182 of the green sub-pixel (R) to form an integrated structure, and are prepared by using the same material through the same preparation process; the filter layer 182 of the blue sub-pixel (B) is configured to transmit blue light, the third filter material layer 181-3 of the light-blocking layer 181 is connected to the filter layer 182 of the blue sub-pixel (B) to form an integrated structure, and are prepared by using the same material through the same preparation process.

[0071] The display substrate of the disclosed embodiment is connected to the adjacent filter layer 182 through one of the first filter material layer 181 - 1 , the second filter material layer 181 - 2 and the third filter material layer 181 - 3 into an integrated structure, which can simplify the process steps and reduce the production cost.

[0072] In an exemplary embodiment, a first light-transmitting hole 21 is provided in the pixel definition layer 12 and the spacer layer 13, and the pixel definition layer 12 and the spacer layer 13 in the first light-transmitting hole 21 are etched away to expose the circuit structure layer 102; a cathode 15, a first inorganic encapsulation layer 161 and an organic encapsulation layer 163 are sequentially provided in the first light-transmitting hole 21 along a direction away from the substrate, and the organic encapsulation layer 163 fills the first light-transmitting hole 21.

[0073] In an exemplary embodiment, a second light-transmitting hole 22 is provided in the light-blocking layer 181 of the color filter structure layer 107, the light-blocking layer 181 (the first light filter material layer 181-1, the second light filter material layer 181-2 and the third light filter material layer 181-3) in the second light-transmitting hole 22 is etched away to expose the first protective layer 106, and a second protective layer 108 is provided in the second light-transmitting hole 22, and the second protective layer 108 fills the second light-transmitting hole 22.

[0074] In an exemplary embodiment, the first light transmission hole 21 is disposed on a side of the second light transmission hole 22 close to the substrate, and an orthographic projection of the first light transmission hole 21 on the substrate at least partially overlaps with an orthographic projection of the second light transmission hole 22 on the substrate.

[0075] In an exemplary embodiment, the shape of the cross section of the first light-transmitting hole 21 perpendicular to the substrate direction is an inverted trapezoid, and the shape of the cross section of the second light-transmitting hole 22 perpendicular to the substrate direction is a rectangle. The orthographic projection of the first light-transmitting hole 21 on the substrate 101 near the substrate 101 covers the orthographic projection of the corresponding second light-transmitting hole 22 on the substrate 101, and the minimum distance between the edge of the orthographic projection of the first light-transmitting hole 21 on the substrate 101 near the substrate 101 and the edge of the orthographic projection of the corresponding second light-transmitting hole 22 on the substrate 101 is L2, and the range of the minimum distance L2 between the edge of the orthographic projection of the first light-transmitting hole 21 on the substrate 101 near the substrate 101 and the edge of the orthographic projection of the corresponding second light-transmitting hole 22 on the substrate 101 is: 0um < L2 ≤ 2um. Alternatively, the orthographic projection of the first light-transmitting hole 21 on the side close to the substrate 101 on the substrate 101 is located in the orthographic projection of the corresponding second light-transmitting hole 22 on the substrate 101, and the range of the minimum distance L2 between the edge of the orthographic projection of the first light-transmitting hole 21 on the side close to the substrate 101 and the edge of the orthographic projection of the corresponding second light-transmitting hole 22 on the substrate 101 is: 0um < L2 ≤ 2um. Alternatively, the orthographic projection of the first light-transmitting hole 21 on the side close to the substrate 101 on the substrate 101 completely overlaps with the orthographic projection of the corresponding second light-transmitting hole 22 on the substrate 101.

[0076] The display substrate of the embodiment of the present disclosure forms the second light-transmitting hole 22 in the light-blocking layer 181 to improve the light transmittance of the second display area with a large viewing angle, thereby increasing the field of view (FOV) of the second display area.

[0077] In an exemplary embodiment, a hardware such as a photosensitive sensor 10 (e.g., a camera) may be disposed on the backlight side of the display substrate, and the orthographic projection of the photosensitive surface of the photosensitive sensor 10 on the display substrate at least partially overlaps with the orthographic projection of the first light-transmitting hole 21 and the second light-transmitting hole 22 of the display substrate on the display substrate, and ambient light may be incident on the photosensitive surface of the photosensitive sensor through the first light-transmitting hole 21 and the second light-transmitting hole 22, thereby increasing the screen-to-body ratio of the display device.

[0078] Figure 4b is a schematic cross-sectional structure diagram of a first display area of ​​a display substrate according to an embodiment of the present disclosure, Figure 4b Schematic diagram of three sub-pixel structures in the first display area. In an exemplary embodiment, Figure 4b As shown, on a plane perpendicular to the display substrate, the first display area of ​​the display substrate may include: a substrate 101, and a circuit structure layer 102, a light-emitting structure layer, a packaging structure layer 103, a buffer layer 104, a touch structure layer, a first protective layer 106, a color film structure layer 107 and a second protective layer 108 arranged in sequence on the substrate 101.

[0079] In an exemplary embodiment, the substrate 101, circuit structure layer 102, light-emitting structure layer, packaging structure layer 103, buffer layer 104, touch structure layer, color film structure layer 107, first protective layer 106 and second protective layer 108 of the first display area are substantially the same as the substrate 101, circuit structure layer 102, light-emitting structure layer, packaging structure layer 103, color film structure layer 107, buffer layer 104, touch structure layer, first protective layer 106 and second protective layer 108 of the second display area, with the difference that the first light-transmitting hole is not provided in the pixel definition layer and the spacer layer of the light-emitting structure layer, and the second light-transmitting hole is not provided in the light-blocking layer of the color film structure layer 107 of the first display area, which will not be described in detail in the present disclosure.

[0080] In an exemplary embodiment, the orthographic projection of the pixel opening 121 on the side close to the substrate 101 is located in the orthographic projection of the corresponding filter layer 182 on the substrate 101, and the minimum distance between the edge of the orthographic projection of the pixel opening 121 on the side close to the substrate 101 and the edge of the orthographic projection of the corresponding filter layer 182 on the substrate 101 is L1. The range of the minimum distance L1 between the edge of the orthographic projection of the pixel opening 121 on the side close to the substrate 101 and the edge of the orthographic projection of the corresponding filter layer 182 on the substrate 101 is: 4um≤L1≤6um.

[0081] Figure 5 is a schematic cross-sectional structure diagram of a second display area of ​​another display substrate according to an embodiment of the present disclosure, Figure 5 Schematic diagram of the structure of three sub-pixels and one opening area in the second display area. Figure 5 As shown, this embodiment shows that the substrate structure and Figure 4a The diagram is basically the same as shown, except that the structure of the second light-transmitting hole in the second display area is different.

[0082] In an exemplary embodiment, the second light-transmitting hole 22 of the second display area includes a first channel 22-1 and a second channel 22-2 connected to each other, and the first channel 22-1 is arranged on the side of the second channel 22-2 close to the substrate. The first channel 22-1 is arranged in the first filter material layer 181-1 of the light-blocking layer 181, and the first filter material layer 181-1 in the first channel 22-1 is etched away, and the second protective layer 108 is arranged in the first channel 22-1, and the second protective layer 108 fills the first channel 22-1. The second channel 22-2 is arranged in the second filter material layer 181-2 and the third filter material layer 181-3 of the light-blocking layer 181, and the second filter material layer 181-2 and the third filter material layer 181-3 in the second channel 22-2 are etched away, and the second protective layer 108 is arranged in the second channel 22-2, and the second protective layer 108 fills the second channel 22-2.

[0083] In an exemplary embodiment, the cross-section shapes of the first channel 22-1 and the second channel 22-2 in a direction perpendicular to the substrate are both rectangular, the orthographic projection of the first channel 22-1 on the substrate is located in the orthographic projection of the second channel 22-2 on the substrate, and the second channel 22-2 exposes the first filter material layer 181-1 around the first channel 22-1.

[0084] In the embodiment of the present disclosure, the orthographic projection of the display substrate through the first hole 22-1 on the substrate is located within the orthographic projection of the second hole 22-2 on the substrate, so that the light Li1 of a specific color with a large viewing angle in the second display area can pass through the second hole 22-2 and then pass through the first filter material layer 181-1 around the first hole 22-1 exposed by the second hole 22-2, thereby improving the transmittance of the light with a large viewing angle in the second display area and enhancing the field of view (FOV) of the second display area.

[0085] In an exemplary embodiment, the first filter material layer 181-1 can transmit green light, the second filter material layer 181-2 can transmit red light, and the third filter material layer 181-3 can transmit blue light. The wide-angle green light can pass through the second hole 22-2 and then pass through the first filter material layer 181-1 around the first hole 22-1 exposed by the second hole 22-2, thereby improving the transmittance of the wide-angle green light in the second display area and improving the field of view (FOV) of the second display area.

[0086] In an exemplary embodiment, the minimum distance between the edge of the orthographic projection of the first channel 22-1 on the substrate 101 and the edge of the orthographic projection of the second channel 22-2 on the substrate is L3, and the range of the minimum distance L3 between the edge of the orthographic projection of the first channel 22-1 on the substrate 101 and the edge of the orthographic projection of the second channel 22-2 on the substrate is: 2um≤L3≤6um.

[0087] Figure 6 is a schematic cross-sectional structure diagram of a second display area of ​​another display substrate according to an embodiment of the present disclosure, Figure 6 Schematic diagram of the structure of three sub-pixels and one opening area in the second display area. Figure 6 As shown, this embodiment shows that the substrate structure and Figure 5 The figure is basically the same as shown, except that a first refraction layer 31 is arranged in the opening area of ​​the second display area.

[0088] In an exemplary embodiment, the first refractive layer 31 is disposed on the surface of the touch insulating layer 105 away from the substrate, the first protective layer 106 covers the surface and side of the first refractive layer 31 away from the substrate, and the refractive index of the first refractive layer 31 is less than the refractive index of the first protective layer 106. The first refractive layer 31 is provided with a third light-transmitting hole 23, and the orthographic projection of the third light-transmitting hole 23 on the substrate overlaps with at least part of the orthographic projection of the first light-transmitting hole 21 on the substrate and at least part of the orthographic projection of the second light-transmitting hole 22 on the substrate, and the first refractive layer 31 is configured to emit the wide-viewing angle light Li2 incident on the first refractive layer 31 toward the direction of the photosensor 10.

[0089] The display substrate of the disclosed embodiment directs the incident wide-angle light Li2 toward the direction of the photosensor 10 through the first refractive layer 31, thereby improving the transmittance of the wide-angle light in the second display area and increasing the field of view (FOV) of the second display area.

[0090] In an exemplary embodiment, the thickness of the first protective layer 106 is greater than or equal to 4 micrometers and less than or equal to 10 micrometers, and the refractive index of the first protective layer 106 is greater than 1.65.

[0091] In an exemplary embodiment, the first refractive layer 31 may be an organic material, such as an optical adhesive, and has a thickness greater than or equal to 1.5 micrometers and less than or equal to 3 micrometers, and a refractive index less than 1.65.

[0092] In an exemplary embodiment, the cross section of the first refractive layer 31 in a direction perpendicular to the substrate 101 is a regular trapezoid, and the slope angle n1 of the side of the first refractive layer 31 close to the third light transmission hole 23 is greater than or equal to 50 degrees and less than or equal to 80 degrees. The slope angle n1 of the first refractive layer 31 is the angle formed between the side of the first refractive layer 31 close to the third light transmission hole 23 and the plane where the substrate is located.

[0093] In an exemplary embodiment, the orthographic projection of the third light-transmitting hole 23 on the substrate near the substrate is located in the orthographic projection of the first channel 22-1 on the substrate 101, and the minimum distance between the edge of the orthographic projection of the third light-transmitting hole 23 on the substrate near the substrate and the edge of the orthographic projection of the first channel 22-1 on the substrate is L4, and the range of the minimum distance L4 between the edge of the orthographic projection of the third light-transmitting hole 23 on the substrate near the substrate and the edge of the orthographic projection of the first channel 22-1 on the substrate is: 0um < L4 ≤ 1um. Alternatively, the orthographic projection of the third light-transmitting hole 23 on the substrate near the substrate covers the orthographic projection of the first channel 22-1 on the substrate 101, and the range of the minimum distance L4 between the edge of the orthographic projection of the third light-transmitting hole 23 on the substrate near the substrate and the edge of the orthographic projection of the first channel 22-1 on the substrate is: 0um < L4 ≤ 1um. Alternatively, the orthographic projection of the third light-transmitting hole 23 on the substrate near the substrate completely overlaps with the orthographic projection of the first channel 22-1 on the substrate 101. The orthographic projection of the first hole 22 - 1 on the substrate is the orthographic projection of the second light-transmitting hole on the substrate close to the substrate.

[0094] Figure 7 is a schematic cross-sectional structure diagram of a second display area of ​​another display substrate according to an embodiment of the present disclosure, Figure 7 Schematic diagram of the structure of three sub-pixels and one opening area in the second display area. Figure 7 As shown, this embodiment shows that the substrate structure and Figure 5 The figure is basically the same as shown, except that a second refractive layer 32 is arranged in the opening area of ​​the second display area.

[0095] In an exemplary embodiment, at least a portion of the second refractive layer 32 is disposed in the first light-transmitting hole 21, the second refractive layer 32 is disposed on the side of the first inorganic encapsulation layer 161 in the first light-transmitting hole 21 away from the substrate, the second refractive layer 32 is in contact with the first inorganic encapsulation layer 161 in the first light-transmitting hole 21, and the organic encapsulation layer 163 covers the surface of the second refractive layer 32 away from the substrate. The orthographic projection of the second refractive layer 32 on the substrate overlaps at least a portion of the orthographic projection of the first light-transmitting hole 21 on the substrate and at least a portion of the orthographic projection of the second light-transmitting hole 22 on the substrate, and the second refractive layer 32 is configured to emit the large-viewing-angle light Li3 incident on the second refractive layer 32 toward the direction of the photosensor 10.

[0096] The display substrate of the disclosed embodiment directs the incident wide-angle light Li3 toward the direction of the photosensor 10 through the second refractive layer 32, thereby improving the transmittance of the wide-angle light in the second display area and increasing the field of view (FOV) of the second display area.

[0097] In an exemplary embodiment, the second refractive layer 32 may be an organic material, for example, an optical adhesive. The second refractive layer 32 has an inverted trapezoidal cross section perpendicular to the substrate. The refractive index of the second refractive layer 32 is greater than the refractive index of the first inorganic encapsulation layer 161. For example, the refractive index of the second refractive layer 32 is greater than 1.65.

[0098] Figure 8 is a schematic cross-sectional structure diagram of a second display area of ​​another display substrate according to an embodiment of the present disclosure, Figure 8 Schematic diagram of the structure of three sub-pixels and one opening area in the second display area. Figure 8 As shown, this embodiment shows that the substrate structure and Figure 5 The figure is basically the same as shown, except that a third refraction layer 33 is arranged in the opening area of ​​the second display area.

[0099] In an exemplary embodiment, a groove is provided on the surface of the first protective layer 106 away from the substrate and is recessed in a direction close to the substrate 101. The third refractive layer 33 is provided in the groove. The third refractive layer 33 contacts the bottom wall and the side wall of the groove. The orthographic projection of the third refractive layer 33 on the substrate overlaps at least partially with the orthographic projection of the second light-transmitting hole 22 on the substrate close to the substrate. The second protective layer 108 in the second light-transmitting hole 22 covers the surface of the third refractive layer 33 away from the substrate 101. The refractive index of the third refractive layer 33 is greater than the refractive index of the first protective layer 106. The orthographic projections of the third refractive layer 33 on the substrate overlap with at least part of the orthographic projection of the first light-transmitting hole 21 on the substrate and at least part of the orthographic projection of the second light-transmitting hole 22 on the substrate. The third refractive layer 33 is configured to direct the wide-angle light Li4 incident on the third refractive layer 33 toward the direction of the photosensor 10.

[0100] The display substrate of the disclosed embodiment directs the incident wide-angle light Li4 toward the direction of the photosensor 10 through the third refractive layer 33, thereby improving the transmittance of the wide-angle light in the second display area and increasing the field of view (FOV) of the second display area.

[0101] In an exemplary embodiment, the thickness of the first protective layer 106 is greater than or equal to 4 micrometers and less than or equal to 10 micrometers, and the refractive index of the first protective layer 106 is less than 1.65.

[0102] In an exemplary embodiment, the thickness of the third refractive layer 33 is greater than or equal to 1 micrometer and less than or equal to 4 micrometers, and the refractive index of the third refractive layer 33 is greater than 1.65.

[0103] In an exemplary embodiment, the third refractive layer 33 has an inverted trapezoidal cross section in a direction perpendicular to the substrate 101, and a slope angle n2 of a side surface of the third refractive layer 33 is greater than or equal to 50 degrees and less than or equal to 80 degrees. The slope angle n2 of the third refractive layer 33 is the angle formed between the side surface of the third refractive layer 33 and the plane where the substrate is located.

[0104] In an exemplary embodiment, the orthographic projection of the side of the third refractive layer 33 close to the substrate on the substrate is located in the orthographic projection of the first hole 22 - 1 on the substrate 101 .

[0105] Fig. 9 is a schematic cross-sectional structure diagram of a second display area of ​​another display substrate according to an embodiment of the present disclosure, Fig. 9 Schematic diagram of the structure of three sub-pixels and one opening area in the second display area. Fig. 9 As shown, this embodiment shows that the substrate structure and Figure 5 The diagrams shown are basically the same, except that the structure of the first channel 22 - 1 of the second light-transmitting hole 22 in the second display area is different.

[0106] In an exemplary embodiment, the first filter material layer 181-1 of the light blocking layer 181 is connected to the adjacent filter layer 182 to form an integral structure, and is made of the same material through the same preparation process; the integral structure formed by the first filter material layer 181-1 and the filter layer 182 has an inverted trapezoidal shape in a cross section perpendicular to the substrate. The first channel 22-1 in the first filter material layer 181-1 has a regular trapezoidal shape in a cross section perpendicular to the substrate, and the area of ​​the orthographic projection of the first channel 22-1 on the substrate near the substrate is greater than the area of ​​the orthographic projection of the first channel 22-1 on the substrate away from the substrate, and the orthographic projection of the first channel 22-1 on the substrate near the substrate covers the orthographic projection of the first channel 22-1 on the substrate away from the substrate.

[0107] In an exemplary embodiment, the second protective layer 108 contacts the side of the first channel 22-1, the refractive index of the first filter material layer 181-1 is less than the refractive index of the second protective layer 108, and the thickness of the first filter material layer 181-1 is greater than or equal to 2 microns and less than or equal to 3 microns. The slope angle n3 of the side of the first channel 22-1 is greater than or equal to 50 degrees and less than or equal to 80 degrees. The slope angle n3 of the side of the first channel 22-1 is the angle formed between the side of the first channel 22-1 and the plane where the substrate is located.

[0108] The disclosed embodiment shows that the cross-section of the substrate through the first channel 22-1 at right angles to the substrate is in the shape of a right trapezoid, and the side of the first channel 22-1 directs the incident wide-angle light Li5 toward the direction of the photosensitive sensor 10, thereby increasing the transmittance of the wide-angle light in the second display area and improving the field of view (FOV) of the second display area.

[0109] In an exemplary embodiment, the thickness of the first protective layer 106 is greater than or equal to 4 micrometers and less than or equal to 10 micrometers, and the refractive index of the first protective layer 106 is greater than 1.65.

[0110] In an exemplary embodiment, the display substrate of the present disclosure can be applied to a display device having a pixel driving circuit, such as OLED, quantum dot display (QLED), light emitting diode display (Micro LED or Mini LED) or quantum dot light emitting diode display (QDLED), etc., and the present disclosure is not limited here.

[0111] Fig.10 is a schematic cross-sectional structure diagram of a second display area of ​​another display substrate according to an embodiment of the present disclosure, Fig.10 Schematic diagram of the structure of three sub-pixels and one opening area in the second display area. Fig.10 As shown, this embodiment shows that the substrate structure and Figure 4a The figures are basically the same as shown, except that the structure of the light blocking layer 181 of the color filter structure layer 107 is different.

[0112] In an exemplary embodiment, the light blocking layer 181 of the color filter structure layer 107 includes a first filter material layer 181-1 and a second filter material layer 181-2 which are sequentially stacked in a direction away from the substrate 101. The first filter material layer 181-1 is configured to transmit light of a first color, and the second filter material layer 181-2 is configured to transmit light of a second color, and the first color of the light transmitted by the first filter material layer 181-1 and the second color of the light transmitted by the second filter material layer 181-2 are different from each other.

[0113] In an exemplary embodiment, the first filter material layer 181 - 1 may be a green filter configured to transmit green light; and the second filter material layer 181 - 2 may be a blue filter configured to transmit blue light.

[0114] In an exemplary embodiment, one of the first filter material layer 181-1 and the second filter material layer 181-2 is connected to the adjacent filter layer 182 to form an integral structure, and is prepared by the same material and the same preparation process. For example, the filter layer 182 of the green sub-pixel (G) is configured to transmit green light, the first filter material layer 181-1 of the light-blocking layer 181 is connected to the filter layer 182 of the green sub-pixel (R) to form an integral structure, and is prepared by the same material and the same preparation process; the filter layer 182 of the blue sub-pixel (B) is configured to transmit blue light, the second filter material layer 181-2 of the light-blocking layer 181 is connected to the filter layer 182 of the blue sub-pixel (B) to form an integral structure, and is prepared by the same material and the same preparation process.

[0115] The display substrate of the disclosed embodiment is connected to the adjacent filter layer 182 through one of the first filter material layer 181 - 1 and the second filter material layer 181 - 2 into an integrated structure, which can simplify the process steps and reduce the production cost.

[0116] Fig.11 is a schematic cross-sectional structure diagram of a second display area of ​​another display substrate according to an embodiment of the present disclosure, Fig.11 Schematic diagram of the structure of three sub-pixels and one opening area in the second display area. Fig.11 As shown, this embodiment shows that the substrate structure and Figure 4a The figures are basically the same as shown, except that the structure of the light blocking layer 181 of the color filter structure layer 107 is different.

[0117] In an exemplary embodiment, the light blocking layer 181 of the color filter structure layer 107 includes a first filter material layer 181-1 and a second filter material layer 181-2 which are sequentially stacked in a direction away from the substrate 101. The first filter material layer 181-1 is configured to transmit light of a first color, and the second filter material layer 181-2 is configured to transmit light of a second color, and the first color of the light transmitted by the first filter material layer 181-1 and the second color of the light transmitted by the second filter material layer 181-2 are different from each other.

[0118] In an exemplary embodiment, the first filter material layer 181 - 1 may be a green filter configured to transmit green light; and the second filter material layer 181 - 2 may be a red filter configured to transmit red light.

[0119] In an exemplary embodiment, one of the first filter material layer 181-1 and the second filter material layer 181-2 is connected to the adjacent filter layer 182 to form an integral structure, and is prepared by using the same material through the same preparation process. For example, the filter layer 182 of the green sub-pixel (G) is configured to transmit green light, the first filter material layer 181-1 of the light-blocking layer 181 is connected to the filter layer 182 of the green sub-pixel (R) to form an integral structure, and is prepared by using the same material through the same preparation process; the filter layer 182 of the red sub-pixel (R) is configured to transmit red light, the second filter material layer 181-2 of the light-blocking layer 181 is connected to the filter layer 182 of the red sub-pixel (R) to form an integral structure, and is prepared by using the same material through the same preparation process.

[0120] The display substrate of the disclosed embodiment is connected to the adjacent filter layer 182 through one of the first filter material layer 181 - 1 and the second filter material layer 181 - 2 into an integrated structure, which can simplify the process steps and reduce the production cost.

[0121] The present disclosure also provides a display device, including any display substrate as described above. The display device can be any product or component with a display function, such as a mobile phone, a tablet computer, a television, a monitor, a notebook computer, a digital photo frame, a navigator, etc., but the embodiments of the present invention are not limited thereto.

[0122] Although the embodiments disclosed in the present disclosure are as above, it should be noted that the above embodiments are merely exemplary and not restrictive. Therefore, the present disclosure is not limited to the contents specifically shown and described herein. Various modifications, substitutions or omissions may be made to the forms and details of the implementation without departing from the scope of the present disclosure.

Claims

1. A display substrate, characterized in that: It includes a first display area and a second display area, the light transmittance of the second display area is greater than the light transmittance of the first display area, and the second display area is located on at least one side of the first display area; The display substrate comprises a base, and a light emitting structure layer, a packaging structure layer and a color filter structure layer stacked in sequence along a direction away from the base, the light emitting structure layer comprises a pixel definition layer and a spacer layer stacked in sequence along a direction away from the base, the color filter structure layer comprises a filter layer and a light blocking layer, and at least part of the light blocking layer is located between adjacent filter layers; In the second display area, a first light-transmitting hole is provided in the pixel definition layer and the spacer layer, a second light-transmitting hole is provided in the light-blocking layer, and an orthographic projection of the first light-transmitting hole on the substrate overlaps at least partially with an orthographic projection of the second light-transmitting hole on the substrate; The light blocking layer includes a plurality of filter material layers stacked in sequence along a direction away from the substrate, the plurality of filter material layers are configured to transmit visible light of a specific color, and at least some of the plurality of filter material layers transmit visible light of different colors.

2. The display substrate according to claim 1, characterized in that: The light-blocking layer includes a first filter material layer, a second filter material layer and a third filter material layer stacked in sequence along a direction away from the substrate, the color of visible light transmitted by the first filter material layer, the color of visible light transmitted by the second filter material layer and the color of visible light transmitted by the third filter material layer are different from each other, one of the first filter material layer, the second filter material layer and the third filter material layer is connected to an adjacent filter layer to form an integrated structure, and the same material is used; or, the light-blocking layer includes a first filter material layer and a second filter material layer stacked in sequence along a direction away from the substrate, the color of visible light transmitted by the first filter material layer and the color of visible light transmitted by the second filter material layer are different from each other, one of the first filter material layer and the second filter material layer is connected to an adjacent filter layer to form an integrated structure, and the same material is used.

3. The display substrate according to claim 1, characterized in that: The orthographic projection of the first light-transmitting hole on the substrate near the substrate covers the orthographic projection of the second light-transmitting hole on the substrate, the minimum distance between the edge of the orthographic projection of the first light-transmitting hole on the substrate near the substrate and the edge of the orthographic projection of the second light-transmitting hole on the substrate is L2, and the range of the minimum distance between the edge of the orthographic projection of the first light-transmitting hole on the substrate near the substrate and the edge of the orthographic projection of the second light-transmitting hole on the substrate is: 0um﹤L2≤2um; Alternatively, the orthographic projection of the first light-transmitting hole on the substrate near the side of the substrate is located in the orthographic projection of the corresponding second light-transmitting hole on the substrate, the minimum distance between the edge of the orthographic projection of the first light-transmitting hole on the substrate near the side of the substrate and the edge of the orthographic projection of the corresponding second light-transmitting hole on the substrate is L2, and the range of the minimum distance between the edge of the orthographic projection of the first light-transmitting hole on the substrate near the side of the substrate and the edge of the orthographic projection of the corresponding second light-transmitting hole on the substrate is: 0um﹤L2≤2um; or, the orthographic projection of the first light-transmitting hole on the substrate near the side of the substrate completely overlaps with the orthographic projection of the corresponding second light-transmitting hole on the substrate.

4. The display substrate according to claim 1, characterized in that: A pixel opening is provided in the pixel definition layer, and the orthographic projection of the pixel opening on the substrate close to the side of the substrate is located in the orthographic projection of the corresponding filter layer on the substrate. The minimum distance between the edge of the orthographic projection of the pixel opening on the substrate close to the side of the substrate and the edge of the orthographic projection of the corresponding filter layer on the substrate is L1, and the minimum distance between the edge of the orthographic projection of the pixel opening on the substrate close to the side of the substrate and the edge of the orthographic projection of the corresponding filter layer on the substrate is in the range of: 4um≤L1≤6um.

5. The display substrate according to claim 1, characterized in that: The second light-transmitting hole includes a first channel and a second channel connected to each other, the first channel is arranged on a side of the second channel close to the substrate, the orthographic projection of the first channel on the substrate overlaps with at least part of the orthographic projection of the second channel on the substrate, and the second channel exposes at least part of the filter material layer around the first channel.

6. The display substrate according to claim 5, characterized in that: The orthographic projection of the first channel on the substrate is located in the orthographic projection of the second channel on the substrate, the minimum distance between the edge of the orthographic projection of the first channel on the substrate and the edge of the orthographic projection of the second channel on the substrate is L3, and the range of the minimum distance between the edge of the orthographic projection of the first channel on the substrate and the edge of the orthographic projection of the second channel on the substrate is: 2um≤L3≤6um.

7. The display substrate according to claim 5, characterized in that: The cross section of the first channel in a direction perpendicular to the substrate is a rectangle; or, the cross section of the first channel in a direction perpendicular to the substrate is a regular trapezoid, and the slope angle of the side of the first channel is greater than or equal to 50 degrees and less than or equal to 80 degrees.

8. The display substrate according to claim 1, characterized in that: It also includes a touch structure layer and a first protective layer, the touch structure layer is stacked between the packaging structure layer and the color film structure layer, the first protective layer is arranged between the touch structure layer and the color film structure layer, the touch structure layer includes a touch insulation layer, a first refractive layer is arranged on the surface of the touch insulation layer away from the substrate, the first protective layer covers the first refractive layer, the refractive index of the first refractive layer is less than the refractive index of the first protective layer, a third light-transmitting hole is arranged in the first refractive layer, and the orthographic projection of the third light-transmitting hole on the substrate overlaps with at least part of the orthographic projection of the first light-transmitting hole on the substrate and at least part of the orthographic projection of the second light-transmitting hole on the substrate.

9. The display substrate according to claim 8, characterized in that: The cross section of the first refractive layer in a direction perpendicular to the substrate is a right trapezoid, and the slope angle of the side of the first refractive layer close to the third light-transmitting hole is greater than or equal to 50 degrees and less than or equal to 80 degrees; and / or the thickness of the first refractive layer is greater than or equal to 1.5 microns and less than or equal to 3 microns; and / or the refractive index of the first refractive layer is less than 1.

65.

10. The display substrate according to claim 8, characterized in that: The orthographic projection of the third light-transmitting hole on the side close to the substrate is located in the orthographic projection of the second light-transmitting hole on the side close to the substrate, the minimum distance between the edge of the orthographic projection of the third light-transmitting hole on the side close to the substrate and the edge of the orthographic projection of the second light-transmitting hole on the side close to the substrate is L4, and the range of the minimum distance between the edge of the orthographic projection of the third light-transmitting hole on the side close to the substrate and the edge of the orthographic projection of the second light-transmitting hole on the side close to the substrate is: 0um﹤L4≤1um; or, the orthographic projection of the third light-transmitting hole on the side close to the substrate covers The orthographic projection of the second light-transmitting hole on the substrate near the side of the substrate, the edge of the orthographic projection of the third light-transmitting hole on the substrate near the side of the substrate, and the minimum distance between the edge of the orthographic projection of the second light-transmitting hole on the substrate near the side of the substrate is L4, and the range of the minimum distance between the edge of the orthographic projection of the third light-transmitting hole on the substrate near the side of the substrate and the edge of the orthographic projection of the second light-transmitting hole on the substrate near the side of the substrate is: 0um﹤L4≤1um; or, the orthographic projection of the third light-transmitting hole on the substrate near the side of the substrate completely overlaps with the orthographic projection of the second light-transmitting hole on the substrate near the side of the substrate.

11. The display substrate according to claim 1, characterized in that: The packaging structure layer includes a first inorganic packaging layer, at least a portion of the first inorganic packaging layer is arranged in the first light-transmitting hole, a second refractive layer is arranged in the first light-transmitting hole, the second refractive layer is arranged on the side of the first inorganic packaging layer away from the substrate, the second refractive layer is in contact with the first inorganic packaging layer, and the refractive index of the second refractive layer is greater than the refractive index of the first inorganic packaging layer.

12. The display substrate according to claim 11, characterized in that: The refractive index of the second refractive layer is greater than 1.

65.

13. The display substrate according to claim 1, characterized in that: It also includes a first protective layer, which is arranged on the surface of the color film structure layer close to the substrate, and a groove is arranged on the surface of the first protective layer away from the substrate, and a third refractive layer is arranged in the groove, and the orthographic projection of the third refractive layer on the substrate overlaps at least partially with the orthographic projection of the second light-transmitting hole on the substrate close to the substrate, and the refractive index of the third refractive layer is greater than the refractive index of the first protective layer.

14. The display substrate according to claim 13, characterized in that: The cross section of the third refractive layer in a direction perpendicular to the substrate is in an inverted trapezoid, and the slope angle of the side of the third refractive layer is greater than or equal to 50 degrees and less than or equal to 80 degrees; and / or, the thickness of the third refractive layer is greater than or equal to 1 micron and less than or equal to 4 microns; and / or, the refractive index of the third refractive layer is greater than 1.65; and / or, the orthographic projection of the side of the third refractive layer close to the substrate on the substrate is located in the orthographic projection of the side of the second light transmission hole close to the substrate on the substrate.

15. A display device, characterized in that: The display substrate comprises any one of claims 1 to 14.

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