Display substrate, display panel, and display device

Abstract

A display substrate, a display panel, and a display device. The display substrate includes a transparent region and a pixel display region surrounding at least a part of the transparent region. The display substrate includes a substrate and a first optical layer located on the substrate, and the first optical layer is located within the pixel display region. A portion of the first optical layer close to the transparent region includes a first light deflection portion, and the first light deflection portion is configured to deflect the image light of the pixel display region around the transparent region towards the transparent region for display in the transparent region. By using the display substrate provided by the embodiments of the present disclosure, an image can be displayed in the transparent region to maintain the display integrity of the entire display substrate.

Description

Technical Field

[0001] At least one embodiment of the present disclosure relates to a display substrate, a display panel, and a display device. Background Art

[0002] Currently, the concept of a full-screen mobile phone has received extensive attention in the mobile phone market and is also the future development direction of mobile phones. In such a full-screen mobile phone, the camera can be hidden so that the visible area on the front is almost entirely a screen, thereby enabling users to obtain a better display effect. Summary of the Invention

[0003] At least one embodiment of the present disclosure provides a display substrate, a display panel, and a display device. By using the display substrate provided by the embodiment of the present disclosure, an image can be displayed in the transparent area to maintain the display integrity of the entire display substrate.

[0004] At least one embodiment of the present disclosure provides a display substrate, including: a transparent area and a pixel display area surrounding at least part of the transparent area. The display substrate includes a substrate and a first optical layer located on the substrate, and the first optical layer is located in the pixel display area. A part of the first optical layer close to the transparent area includes a first light deflection portion, and the first light deflection portion is configured to deflect the image light of the pixel display area around the transparent area towards the transparent area for display in the transparent area.

[0005] For example, the display substrate further includes: pixel units, which are arranged on the substrate and located in the pixel display area. The first optical layer is located on the light-emitting side of the pixel units.

[0006] For example, along a direction parallel to the substrate and from a direction away from the transparent area towards the transparent area, the thickness of the first light deflection portion gradually increases, and a medium with a refractive index smaller than that of the first light deflection portion is filled on a side of the first light deflection portion away from the pixel units.

[0007] For example, the first optical layer further includes at least one second light deflection portion, and the second light deflection portion is located on a side of the first light deflection portion away from the transparent area. Along a direction parallel to the substrate and from a direction away from the transparent area towards the transparent area, the thickness of the second light deflection portion gradually increases, and a medium with a refractive index smaller than that of the second light deflection portion is filled on a side of the second light deflection portion away from the pixel units.

[0008] For example, a cross-sectional shape of the second light deflection portion intercepted by a plane perpendicular to the substrate is the same as a cross-sectional shape of the first light deflection portion intercepted by the plane.

[0009] For example, along a direction parallel to the substrate and from a position away from the transparent region towards a position closer to the transparent region, the thickness of the first light deflection portion gradually decreases; the display substrate further includes: a second optical layer attached to a surface of the first light deflection portion away from the pixel unit, and the refractive index of the second optical layer is greater than that of the first light deflection portion.

[0010] For example, along a direction parallel to the substrate and from a position away from the transparent region towards a position closer to the transparent region, the thickness of a portion of the first optical layer other than the first light deflection portion gradually becomes smaller.

[0011] For example, the shape of a surface of the first light deflection portion on the side away from the pixel unit intercepted by a plane perpendicular to the substrate is a straight line or a curve.

[0012] For example, the pixel unit includes a light-emitting layer and a packaging layer located between the first optical layer and the light-emitting layer.

[0013] For example, along a direction perpendicular to the substrate, the position of the substrate opposite to the transparent region includes a through hole.

[0014] For example, the substrate is a transparent substrate.

[0015] For example, the display substrate is an array substrate or a color filter substrate.

[0016] For example, the display substrate is a cover glass, the substrate includes a groove, and the first optical layer is located in the groove; along a direction parallel to the substrate and from a position away from the transparent region towards a position closer to the transparent region, the thickness of the first light deflection portion gradually decreases; the refractive index of the substrate is greater than that of the first optical layer, and the substrate is located on the light-emitting side of the first optical layer.

[0017] For example, a surface of the first optical layer away from the substrate is flush with the surface of the substrate.

[0018] At least one embodiment of the present disclosure provides a display panel, including: the above-mentioned display substrate. In a direction perpendicular to the substrate, the position of the display panel opposite to the transparent region is transparent.

[0019] At least one embodiment of the present disclosure provides a display device, including: the above-mentioned display panel, and a functional component located in the transparent region and on the non-light-emitting side of the display panel.

[0020] For example, the functional component includes at least one of a camera module, a 3D structured light module, a time-of-flight 3D imaging module, and an infrared sensing module. Description of the Drawings

[0021] To more clearly illustrate the technical solutions of the embodiments of the present disclosure, the accompanying drawings of the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description only relate to some embodiments of the present disclosure and do not limit the present disclosure.

[0022] Figure 1A and Figure 1B FIG. 7 is a schematic partial structure diagram of a display substrate provided for an example of an embodiment of the present disclosure;

[0023] Figure 2 FIG. 11 is a schematic partial cross-sectional view of a display substrate provided for another example of an embodiment of the present disclosure;

[0024] Figure 3A FIG. 15 is a schematic partial cross-sectional structure diagram of a display substrate provided for an example of another embodiment of the present disclosure;

[0025] Figure 3B FIG. 19 is a schematic partial cross-sectional structure diagram of a display substrate provided for another example of another embodiment of the present disclosure;

[0026] Figure 3C FIG. 23 is a schematic partial cross-sectional structure diagram of a display substrate provided for another example of another embodiment of the present disclosure;

[0027] Figure 4 FIG. 27 is a schematic partial cross-sectional view of a display substrate provided for another embodiment of the present disclosure;

[0028] Figure 5A FIG. 31 is a schematic partial cross-sectional structure diagram of a display panel provided for an example of another embodiment of the present disclosure;

[0029] Figure 5B FIG. 35 is a schematic partial cross-sectional structure diagram of a display panel provided for another example of another embodiment of the present disclosure;

[0030] Figure 5C FIG. 39 is a schematic partial cross-sectional structure diagram of a display panel provided for another example of another embodiment of the present disclosure; and

[0031] Figure 6 FIG. 43 is a schematic partial structure diagram of a display device provided for another embodiment of the present disclosure. Detailed Embodiments

[0032] To make the objectives, technical solutions, and advantages of the embodiments of the present disclosure clearer, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present disclosure. Obviously, the described embodiments are some, but not all, of the embodiments of the present disclosure. All other embodiments obtained by those of ordinary skill in the art based on the described embodiments of the present disclosure without creative efforts shall fall within the scope of protection of the present disclosure.

[0033] Unless otherwise defined, technical terms or scientific terms used in this disclosure shall have the ordinary meanings as understood by those of ordinary skill in the art to which this disclosure pertains. The terms "first", "second" and similar terms used in this disclosure do not denote any order, quantity or importance, but are only used to distinguish different components. Words such as "comprising" or "including" mean that the elements or items appearing before this word cover the elements or items listed after this word and their equivalents, without excluding other elements or items.

[0034] In the research, the inventors of this application found that: in order to achieve the design of a full-screen display, through holes can be provided in the display device, and the camera can be placed in the hole area to achieve the hiding of the camera. However, such through holes for placing the camera will cause the hole area not to be displayed when the display screen displays an image, thus generating visual black dots and affecting the user experience.

[0035] An embodiment of the present disclosure provides a display substrate, including: a transparent area and a pixel display area surrounding at least part of the transparent area. The display substrate includes a substrate and a first optical layer located on the substrate, and the first optical layer is located in the pixel display area. The part of the first optical layer close to the transparent area includes a first light deflection part, and the first light deflection part is configured to deflect the image light of the pixel display area around the transparent area towards the transparent area for display in the transparent area. By using the display substrate provided by the embodiment of the present disclosure, an image can be displayed in the transparent area to maintain the display integrity of the entire display substrate.

[0036] The following describes the display substrate, display panel and display device provided by the embodiments of the present disclosure with reference to the accompanying drawings.

[0037] At least one embodiment of the present disclosure provides a display substrate. Figure 1A and Figure 1B is a schematic partial structure diagram of the display substrate provided for an example of an embodiment of the present disclosure, Figure 1B is Figure 1A a schematic partial cross-sectional view of the display substrate shown taken along line AA. As Figure 1A and 1B shown, the display substrate 100 includes a transparent area 101 and a pixel display area 102 surrounding at least part of the transparent area 101. Figure 1ATaking the example that the pixel display area 102 surrounds the entire transparent area 101, but not limited thereto, the pixel display area may also surround a part of the transparent area. The display substrate 100 includes a substrate 110 and a first optical layer 120 located on the substrate 110. The first optical layer 120 is located within the pixel display area 102. In this embodiment, it is taken as an example that the transparent area 101 does not include the first optical layer 120. The portion of the first optical layer 120 close to the transparent area 101 includes a first light deflection portion 121, and the first light deflection portion 121 is configured to deflect the image light of the pixel display area 102 around the transparent area 101 towards the transparent area 101 for display in the transparent area 101.

[0038] For example, as Figure 1B shown, on the side surface of the first light deflection portion 121 away from the substrate 110, a second optical layer 122 is provided. The second optical layer 122 is completely attached to the surface of the first light deflection portion 121, and the refractive index of the second optical layer 122 is greater than that of the first light deflection portion 121. Along the direction parallel to the substrate 110 and from the direction away from the transparent area 101 towards the direction close to the transparent area 101, the thickness of the first light deflection portion 121 gradually decreases, and the thickness of the second optical layer 122 gradually increases.

[0039] This embodiment is not limited to the thickness of the second optical layer gradually increasing, as long as the image light emitted from the first light deflection portion deflects towards the transparent area after passing through the second optical layer.

[0040] Taking the example that the first light deflection portion is an inclined portion whose thickness gradually decreases along the direction parallel to the substrate and from the direction away from the transparent area towards the direction close to the transparent area, but not limited thereto, it may also be other components that can play the role of deflecting light.

[0041] For example, as Figure 1B shown, in this example, the display substrate 100 may be an array substrate or a color filter substrate. The array substrate may be an array substrate of an organic light-emitting diode or an array substrate of a liquid crystal display panel.

[0042] For example, as Figure 1B shown, the display substrate 100 further includes pixel units 130, which are provided on the substrate 110 and located within the pixel display area 102. Figure 1B Schematically showing that the pixel units 130 are located between the first optical layer 120 and the substrate 110, but not limited thereto, as long as the first optical layer is located on the light-emitting side of the pixel units. In the embodiments of the present disclosure, the pixel units are only provided in the pixel display area, that is, no pixel units are provided on the substrate of the transparent area. Therefore, the area where the pixel units are provided is the pixel display area.

[0043] In a general display substrate without a first optical layer and a second optical layer, since pixel units are not provided in the transparent area, when the display substrate is used to display an image, almost all the image light of the pixel units exits from the pixel display area to achieve the display of the picture, and no light exits from the transparent area. Therefore, visual black spots will be generated, affecting the display effect.

[0044] In the display substrate provided in this embodiment, since the position of the first optical layer close to the transparent area on the light-emitting side of the pixel unit includes a first light deflection portion, through the cooperation of the first light deflection portion and the second optical layer, the image light displayed in the pixel display area will deflect toward the transparent area after entering the first light deflection portion and the second optical layer, and be displayed in the transparent area. That is, the image light emitted by the pixel unit changes its original optical path after passing through the first light deflection portion of the first optical layer and the second optical layer, and at least part of this part of the image light with the changed optical path is emitted from the transparent area, and the display integrity of the entire display substrate is achieved by displaying at the position of the original visual black spot.

[0045] For example, if the image light of the pixel unit closest to the transparent area does not pass through the first light deflection portion and the second optical layer, it will be displayed at the edge of the pixel display area close to the transparent area. After the image light of this pixel unit is deflected to the transparent area by the first light deflection portion and the second optical layer, this pixel unit is displayed in the transparent area. That is, the first light deflection portion and the second optical layer deflect the image light displayed at the edge of the pixel display area close to the transparent area into the transparent area. The number of pixel units displayed in the transparent area in this embodiment is not limited, as long as the display integrity of the entire display substrate can be achieved.

[0046] For example, as Figure 1B shown, along a direction parallel to the substrate 110 and from a direction away from the transparent area 101 toward the transparent area 101, the thickness of the remaining part of the first optical layer 120 except the first light deflection portion 121 close to the transparent area 101 gradually decreases, so as to reduce the display difference between the pixel display area 102 and the transparent area 101. At this time, along a direction parallel to the substrate 110 and from a direction away from the transparent area 101 toward the transparent area 101, the thickness of the remaining part of the second optical layer 122 except the part located at the first light deflection portion 121 gradually increases, that is, the shape of the second optical layer 122 is complementary to that of the first optical layer 120. That is, when the surface of the part of the first optical layer far from the substrate is not parallel to the main plane of the substrate, the image light emitted by the pixel unit will enter the second optical layer from this part of the surface of the first optical layer, and through the cooperation of the first optical layer and the second optical layer, the deflection of this part of the image light toward the transparent area can be achieved.

[0047] For example, when the image light of some pixel units near the transparent area is deflected into the transparent area for display, the image light of other pixel units that are still displaying in the pixel display area near these pixel units is also redirected by the part of the first optical layer other than the first light deflection part, and is deflected towards the transparent area, so that the image light emitted from the first optical layer is more evenly distributed, thereby reducing the display difference between the pixel display area and the transparent area.

[0048] This embodiment (including the above and the examples mentioned later) is not limited to the thickness of the part of the first optical layer other than the first light deflection part being gradually changed. The thickness of the part of the first optical layer other than the first light deflection part can also be uniform, that is, the first optical layer includes a first light deflection part and a flat part located on the side of the first light deflection part away from the transparent area. At this time, the second optical layer can be provided only on the first light deflection part.

[0049] For example, as Figure 1B shown, the shape of the surface of the first light deflection part 121 on the side away from the pixel unit 130, such as the inclined surface 1210, intercepted by a plane perpendicular to the substrate 110 (taking the plane parallel to the XY plane in the figure as an example) can be a curve, and the curve bends towards the side close to the transparent area 101. At this time, the inclined surface 1210 is an arc surface. Designing the inclined surface of the first light deflection part as an arc surface and the arc surface bending towards the transparent area can make the image light emitted from the inclined surface evenly distributed.

[0050] For example, Figure 2 is a partial cross-sectional schematic diagram of the display substrate provided for another example of this embodiment. As Figure 2 shown, the display substrate 100 in this example is an array substrate of organic light-emitting diodes. The pixel unit includes a light-emitting layer 131, and the light emitted from the part of the light-emitting layer 131 close to the transparent area 101 exits from the transparent area 101 after passing through the first light deflection part 121 and the second optical layer 122. That is, the light emitted from the part of the light-emitting layer 131 close to the transparent area 101 changes its optical path after passing through the first light deflection part 121 and the second optical layer 122, and is deflected towards the transparent area 101 for display in the transparent area 101.

[0051] For example, as Figure 2As shown, the orthographic projection of the light-emitting layer 131 on the substrate 110 completely falls within the orthographic projection of the first optical layer 120 on the substrate 110. That is, the light emitted by the light-emitting layer 131 all passes through the first optical layer 120 and then exits, thereby reducing the display difference between the pixel display area 102 and the transparent area 101. This embodiment is not limited thereto. The orthographic projection of the light-emitting layer on the substrate may partially fall within the orthographic projection of the first optical layer on the substrate, as long as the light emitted by the light-emitting layer around the transparent area passes through the first light deflection part and the second optical layer and exits from the transparent area, and the display integrity of the entire display substrate can be achieved by displaying at the position of the original visual black spot.

[0052] For example, the pixel unit further includes a cathode and an anode located on both sides of the light-emitting layer in the direction perpendicular to the substrate, a hole injection layer and a hole transport layer located between the anode and the light-emitting layer, and an electron transport layer and an electron transport layer (not shown in the figure) located between the cathode and the light-emitting layer and other film layers.

[0053] For example, as Figure 2 shown, the display substrate 100 further includes a packaging layer 150 located between the first optical layer 120 and the light-emitting layer 131. The packaging layer 150 is used to package the light-emitting layer 131 and prevent film layers such as the light-emitting layer 131 from being eroded by external water and oxygen. In the embodiments of the present disclosure, the manufacturing process of the original organic light-emitting diode array substrate may not be changed, and the first optical layer is added after the general array substrate including the transparent area is packaged, so as to facilitate manufacturing.

[0054] For example, before setting the first optical layer, thin-film transistors may be fabricated on the substrate by photolithography, and then the light-emitting layer may be fabricated by evaporation, printing, or spin coating, etc., and finally packaged to complete the manufacturing process of the general display substrate. For example, in the processes of forming the light-emitting layer and the packaging layer, etc., through-holes corresponding to the transparent area may be formed by patterning the above-mentioned film layers in sequence.

[0055] In this embodiment, after the packaging process, it further includes fabricating the first optical layer and the second optical layer including the first light deflection part on the packaging layer by etching process.

[0056] For example, the process of fabricating the display substrate may also be that before forming the first optical layer, the light-emitting layer and the packaging layer have not been patterned to form vias; after the first optical layer is patterned to form the first light deflection part, the second optical layer is formed on the first optical layer; then all the film layers corresponding to the transparent area are patterned to form vias corresponding to the transparent area. It should be noted that the patterned second optical layer is at least located on the first light deflection part.

[0057] For example, the material of the first optical layer includes a transparent inorganic material or a transparent organic material. For example, the inorganic material may include silicon nitride, silicon oxide, etc., and the organic material may include polyimide, polymethyl methacrylate, etc. This embodiment does not limit this.

[0058] In this embodiment, it is not limited to using an etching process to fabricate the first optical layer. The first optical layer including the first light deflection portion can also be attached to the encapsulation layer by a bonding method. The first optical layer may include a prism structure, and its material is, for example, glass, transparent plastic, etc. Similarly, the second optical layer can also be attached to the first light deflection portion by a bonding method. The second optical layer should use a material with a refractive index greater than that of the first optical layer.

[0059] For example, as Figure 2 shown, along the direction perpendicular to the substrate 110, the position of the substrate 110 directly opposite to the transparent region 101 includes a through hole 111.

[0060] For example, after the first optical layer and the second optical layer are fabricated on the encapsulation layer, the substrate can be cut by a laser or a dicing wheel to form a through hole at the position directly opposite to the transparent region. For example, when the display substrate forms a display device through subsequent fabrication processes, the through hole is directly opposite to a structure such as a camera module or is used to place a structure such as a camera module so that external ambient light can enter the structure such as the camera module through the through hole.

[0061] This embodiment is not limited thereto. For example, the substrate can also be a transparent substrate. When the transparent substrate can maintain good light transmittance, a through hole may not be provided at the position of the substrate directly opposite to the transparent region. For example, when the display substrate forms a display device through subsequent fabrication processes, the camera module is located on the side of the substrate away from the light-emitting layer and within the transparent region, as long as external ambient light can enter the camera module through the transparent substrate.

[0062] Figure 3A It is a schematic partial cross-sectional structure diagram of a display substrate provided for an example of another embodiment of the present disclosure. As Figure 3AAs shown, in this embodiment, the display substrate 200 includes a transparent region 201 and a pixel display region 202 surrounding at least a part of the transparent region 201. The display substrate 200 includes a substrate 210 and a first optical layer 220 located on the substrate 210. The first optical layer 220 is located within the pixel display region 202. A portion of the first optical layer 220 close to the transparent region 201 includes a first light deflection portion 221. Along a direction parallel to the substrate 210 and from a position far from the transparent region 201 towards the transparent region 201, the thickness of the first light deflection portion 221 gradually increases. The first light deflection portion 221 is configured to deflect the image light of the pixel display region 202 around the transparent region 201 towards the transparent region 201 for display in the transparent region 201. The display substrate 200 further includes pixel units 230, which are disposed on the substrate 210 and located in the pixel display region 202. The first optical layer 220 is located on the light-emitting side of the pixel units 230.

[0063] In this embodiment, the first light deflection portion is taken as an inclined portion whose thickness gradually increases along a direction parallel to the substrate and from a position far from the transparent region towards the transparent region, but it is not limited thereto. It can also be other components that can deflect light.

[0064] For example, as Figure 3A shown, a medium 222 having a refractive index smaller than that of the first light deflection portion 221 is filled on a side of the first light deflection portion 221 far from the pixel units 230. For example, the medium 222 can be air or other media having a refractive index smaller than that of the first light deflection portion 221. This embodiment does not limit this.

[0065] In the display substrate provided in this embodiment, the position of the first optical layer disposed on the light-emitting side of the pixel units and close to the transparent region includes a first light deflection portion. After the image light displayed in the pixel display region is incident on the first light deflection portion, it will deflect towards the transparent region for display in the transparent region. That is, the image light emitted by the pixel units changes its original optical path after passing through the first light deflection portion of the first optical layer, and at least a part of the image light whose optical path is changed is emitted from the transparent region, and the display integrity of the entire display substrate is achieved by displaying at the position of the original visual black spot.

[0066] For example, in this example, the display substrate is an array substrate of an organic light-emitting diode. The pixel units 230 include a light-emitting layer (not shown in the figure), and the light emitted from a portion of the light-emitting layer close to the transparent region exits from the transparent region after passing through the first light deflection portion. That is, the light emitted from a portion of the light-emitting layer close to the transparent region changes its optical path after passing through the first light deflection portion and deflects towards the transparent region for display in the transparent region.

[0067] For example, the display substrate further includes a packaging layer located between the first optical layer and the light-emitting layer. The packaging layer is used to package the light-emitting layer and prevent film layers such as the light-emitting layer from being eroded by water and oxygen in the outside world. Embodiments of the present disclosure can add the first optical layer after the packaging of a general array substrate including a transparent region is completed without changing the original manufacturing process of the organic light-emitting diode array substrate, thereby facilitating manufacturing.

[0068] In this embodiment, the manufacturing method of the first optical layer can be the same as that of the first optical layer in the embodiment Figure 1A - Figure 2 shown, and will not be elaborated here.

[0069] For example, as Figure 3A shown, the shape of the inclined surface 2210 of the first light deflection portion 221 intercepted by a plane perpendicular to the substrate 210 (taking the plane parallel to the XY plane in the figure as an example) can be a straight line.

[0070] Figure 3B FIG. is a schematic partial cross-sectional structure diagram of the display substrate provided for another example of this embodiment. As Figure 3B shown, the cross-sectional shape of the inclined surface 2210 of the first light deflection portion 221 intercepted by a plane perpendicular to the substrate 210 (taking the plane parallel to the XY plane in the figure as an example) can also be a curve, and the curve bends away from the transparent region 201. At this time, the inclined surface 2210 is an arc surface. Designing the inclined surface of the first light deflection portion as an arc surface and bending the arc surface toward the transparent region can make the image light emitted from the inclined surface evenly distributed.

[0071] In this example, the substrate 210 is taken as a transparent substrate, but it is not limited thereto. The substrate can also be an opaque substrate. In this case, through holes need to be provided at the position of the substrate opposite to the transparent region to ensure the light transmittance of the transparent region.

[0072] Figure 3C FIG. is a schematic partial cross-sectional structure diagram of the display substrate provided for another example of this embodiment. As Figure 3C shown, the first optical layer 220 further includes at least one second light deflection portion 223. The second light deflection portion 223 is located on the side of the first light deflection portion 221 away from the transparent region 201. Along the direction parallel to the substrate 210 and from the side away from the transparent region 201 to the side close to the transparent region 201, the thickness of each second light deflection portion 223 gradually increases, and a medium 224 with a refractive index smaller than that of the second light deflection portion 223 is filled on the side of the second light deflection portion 223 away from the pixel unit 230.

[0073] For example, the medium 224 can be air or other materials with a refractive index smaller than that of the second light deflection portion 223. This embodiment does not limit this.

[0074] For example, asFigure 3C As shown, the cross-sectional shape of the second light deflection part 223 intercepted by a plane perpendicular to the substrate 210 is the same as the cross-sectional shape of the first light deflection part 221 intercepted by the plane for convenient manufacturing.

[0075] In this example, after the image light emitted by the pixel unit passes through the second light deflection part, its propagation direction will also change and deflect towards the side closer to the transparent area, thereby effectively reducing the display difference between the pixel display area and the transparent area.

[0076] For example, when the image light emitted by the pixel unit passes through the second light deflection part close to the first light deflection part and then exits from the transparent area, under the combined action of the first light deflection part and at least part of the second light deflection part, the integrity of the display of the display substrate can be achieved. At this time, a relatively small thickness of the first optical layer can meet the integrity of the display of the display substrate.

[0077] For example, in this example, the shape of the inclined surfaces of the first light deflection part and the second light deflection part intercepted by a plane perpendicular to the substrate is taken as a curve, so that the uniformity of the emitted light is higher, and the display difference between the pixel display area and the transparent area is further reduced.

[0078] There is a groove between the first light deflection part in this embodiment and the part of the first optical layer other than the first light deflection part. The groove is filled with a medium with a refractive index less than that of the first light deflection part, such as air, to ensure that the image light emitted from the first light deflection part can exit from the transparent area to achieve the integrity of the display of the display substrate.

[0079] There is also a groove between the second light deflection part in this embodiment and the part of the first optical layer other than the second light deflection part. The groove is filled with a medium with a refractive index less than that of the second light deflection part, such as air, to ensure that the image light emitted from the second light deflection part can deflect towards the side closer to the transparent area to achieve the purpose of reducing the display difference between the pixel display area and the transparent area.

[0080] Figure 4 It is a partial cross-sectional schematic diagram of a display substrate provided in another embodiment of the present disclosure. As Figure 4As shown, the display substrate provided in this embodiment may be a cover glass. In this embodiment, the display substrate 300 includes a transparent region 301 and a pixel display region 302 surrounding at least a part of the transparent region 301. The display substrate 300 includes a substrate 310 and a first optical layer 320 located on the substrate 310. The first optical layer 320 is located within the pixel display region 302. The substrate 310 includes a groove 311, and the first optical layer 320 is located within the groove 311; and the refractive index of the first optical layer 320 is less than the refractive index of the substrate 310. A part of the first optical layer 320 close to the transparent region 301 includes a first light deflection portion 321. Along a direction parallel to the substrate 310 and from a direction away from the transparent region 301 towards the transparent region 301, the thickness of the first light deflection portion 321 gradually decreases. The first light deflection portion 321 is configured to deflect the image light of the pixel display region 302 around the transparent region 301 towards the transparent region 301 for display in the transparent region 301. Here, the pixel display region refers to the region directly opposite to the region where pixel units are provided on the array substrate along the direction perpendicular to the cover glass. That is, if there is no first optical layer on the cover glass, the light emitted from the pixel units of the array substrate only exits from the pixel display region on the cover glass, and no light exits from the transparent region, making it impossible to display an image and resulting in visual black spots.

[0081] It should be noted that the shape and characteristics of the first optical layer in this embodiment are the same as Figure 1A - Figure 2 the shape and characteristics of the first optical layer shown, and will not be elaborated here.

[0082] In this embodiment, by providing a first optical layer on the substrate whose refractive index is less than that of the substrate, and a part of the first optical layer close to the transparent region includes a first light deflection portion, an image can be displayed in the transparent region to maintain the display integrity of the entire display substrate.

[0083] It should be noted that the first optical layer in this embodiment is closer to the pixel units relative to the substrate. That is, the image light emitted from the pixel units first passes through the first optical layer and then exits through the substrate.

[0084] For example, the cover glass in this embodiment can be applied to display devices such as organic light-emitting diode display devices or liquid crystal display devices, as well as any products or components with a display function including such display devices, such as televisions, digital cameras, mobile phones, watches, tablet computers, laptop computers, navigators, etc. This embodiment is not limited thereto.

[0085] For example, the process of manufacturing the cover glass in this embodiment may include: patterning the position of the substrate corresponding to the pixel display area to form a groove, that is, patterning so that at least part of the substrate near the transparent area gradually increases in thickness in a direction parallel to the substrate and from away from the transparent area towards the transparent area; then forming a first optical layer in the groove (pixel display area) on the substrate.

[0086] Another embodiment of the present disclosure provides a display panel, which includes the display substrate described in any of the above embodiments.

[0087] Figure 5A FIG. is a schematic partial cross-sectional structure diagram of a display panel provided as an example of another embodiment of the present disclosure. Figure 5A Taking the display substrate as Figure 2 the display substrate shown as an example for description, but not limited thereto, the display substrate in this example may also be the display substrate shown in any of the other above examples.

[0088] As Figure 5A shown, in the direction perpendicular to the substrate 110, the position of the display panel facing the transparent area 101 is transparent.

[0089] For example, as Figure 5A described, the display panel in this example is an organic light-emitting diode display panel, and a light-emitting layer is not provided at the position of the display panel facing the transparent area, that is, the light-emitting layer is only located in the pixel display area. If the first optical layer and the second optical layer are not provided, the light emitted by the light-emitting layer only exits from the pixel display area. At this time, no image light exits from the transparent area, resulting in a visual black spot. Therefore, by adding the first optical layer and the second optical layer, an image can be displayed in the transparent area to maintain the display integrity of the entire display substrate. This embodiment is not limited thereto. Taking Figure 3C the display substrate shown as an example, by adding the first optical layer, an image can be displayed in the transparent area to maintain the display integrity of the entire display substrate.

[0090] For example, the display panel further includes a cover glass 160 located on the display side of the display substrate. The cover glass 160 located in the transparent area 101 is a window of the display panel, and external ambient light can enter the display panel through this window and then enter the subsequent camera module structure.

[0091] In this embodiment, an example is described with the substrate 110 including a through hole 111. After the through hole 111 is formed on the substrate 110 of the display substrate, the cover glass 160 is bonded to the first optical layer 120.

[0092] For example, Figure 5B FIG. is a schematic partial cross-sectional structure diagram of a display panel provided as another example of this embodiment. As Figure 5BAs shown, the display panel in this example is a liquid crystal display panel, and the display panel further includes a backlight 170. The first optical layer 120 is located on the light-emitting side of the backlight 170, and the light emitted by the backlight 170 does not pass through the transparent region 101. That is, the light emitted from the backlight 170 is only incident on the pixel display region 102.

[0093] For example, as Figure 5B shown, the display panel in this example includes an array substrate 1001, a liquid crystal layer 1002, and a color filter substrate 100 located on the light-emitting side of the backlight 170. In this example, the first optical layer 120 is provided on the light-emitting side of the color filter layer 1003 of the color filter substrate 100 as an example, but it is not limited thereto. The first optical layer can also be provided on the array substrate.

[0094] For example, as Figure 5B shown, in this example, the position of the backlight 170 directly opposite to the transparent region 101 is taken as the backlight through hole 171, so that the light emitted from the backlight 170 is only incident on the pixel display region 102. And in this example, the positions of the array substrate 1001, the liquid crystal layer 1002, and the color filter substrate 100 directly opposite to the transparent region 101 are also taken as through holes as an example. This example is not limited thereto, as long as the positions of the array substrate 1001, the liquid crystal layer 1002, and the color filter substrate 100 directly opposite to the transparent region 101 are transparent.

[0095] For example, Figure 5C is a schematic partial cross-sectional structure diagram of the display panel provided for another example of this embodiment. As Figure 5C shown, the display substrate included in the display panel in this example is Figure 4 the display substrate shown. The display substrate in this example is the cover plate of the display panel. In this example, by only improving the cover plate, it can be convenient for manufacturing.

[0096] Another embodiment of the present disclosure provides a display device, and the display device includes any of the above display panels. Figure 6 is a schematic partial structure diagram of the display device provided for this embodiment, Figure 6 schematically showing that the display panel is a display panel including Figure 3C the display substrate shown, but it is not limited thereto, and it can also be a display panel including the display substrate in any of the above examples. As Figure 6 shown, the display device includes a functional component 270 located in the transparent region 201 and on the non-light-emitting side of the display panel. External ambient light can enter the functional component 270 through the lens region 201.

[0097] For example, the functional component 270 is located on the side of the pixel unit 230 away from the first optical layer 220, and the orthographic projection of the functional component 270 on the cover glass 260 does not overlap with the orthographic projection of the first optical layer 220 on the cover glass 260.

[0098] For example, when the substrate is a transparent substrate, vias may not be provided at the position of the substrate facing the transparent region. In this case, the functional component is located on the side of the substrate away from the cover glass.

[0099] For example, Figure 6 Taking the substrate including vias as an example, the functional component may be inserted into the vias of the substrate or may not be inserted into the vias, that is, it is located on the side of the substrate away from the cover glass. This embodiment does not limit this.

[0100] For example, the functional component 270 includes at least one of a camera module (for example, a front camera module), a 3D structured light module (for example, a 3D structured light sensor), a time-of-flight 3D imaging module (for example, a time-of-flight sensor), an infrared sensing module (for example, an infrared sensing sensor), etc.

[0101] For example, the front camera module is usually enabled when the user takes a selfie or makes a video call, and the pixel display area of the display device displays the image obtained by the selfie for the user to view. The front camera module includes, for example, a lens, an image sensor, an image processing chip, etc. The optical image generated by the scene through the lens is projected onto the surface of the image sensor (the image sensor includes two types: CCD and CMOS) and is transformed into an electrical signal. After being converted from analog to digital by the image processing chip, it becomes a digital image signal, which is then sent to the processor for processing and the image of the scene is output on the display screen.

[0102] For example, the 3D structured light sensor and the time-of-flight (ToF) sensor can be used for face recognition to unlock the display device, etc.

[0103] For example, the functional component 270 may only include a camera module to implement the function of taking a selfie or making a video call; for example, the functional component 270 may further include a 3D structured light module or a time-of-flight 3D imaging module to implement face recognition unlocking, etc. This embodiment includes but is not limited to this.

[0104] The display device provided by the embodiments of the present disclosure can display an image in the transparent region to maintain the display integrity of the entire display device.

[0105] The following points need to be explained:

[0106] (1) In the accompanying drawings of the embodiments of the present disclosure, only the structures related to the embodiments of the present disclosure are involved, and other structures can refer to the general design.

[0107] (2) Without conflict, the features in the same embodiment and different embodiments of the present disclosure can be combined with each other.

[0108] The above are only exemplary embodiments of the present disclosure and are not intended to limit the protection scope of the present disclosure, which is determined by the appended claims.

Claims

1. A display substrate, comprising: a transparent region and a pixel display region surrounding at least part of the transparent region, the display substrate includes a substrate and a first optical layer located on the substrate, the first optical layer is located within the pixel display region, pixel units, disposed on the substrate and located within the pixel display region, the first optical layer is located on the light-emitting side of the pixel units, the pixel units include a light-emitting layer, and at least part of the orthographic projection of the light-emitting layer on the substrate falls within the orthographic projection of the first optical layer on the substrate; wherein, a part of the first optical layer close to the transparent region includes a first light deflection portion, and the first light deflection portion is configured to deflect the image light of the pixel display region around the transparent region towards the transparent region for display in the transparent region.

2. The display substrate according to claim 1, wherein, along a direction parallel to the substrate and from a direction away from the transparent region towards the transparent region, the thickness of the first light deflection portion gradually increases, and a medium with a refractive index smaller than that of the first light deflection portion is filled on a side of the first light deflection portion away from the pixel unit.

3. The display substrate according to claim 2, wherein, the first optical layer further includes at least one second light deflection portion, the second light deflection portion is located on a side of the first light deflection portion away from the transparent region, along a direction parallel to the substrate and from a direction away from the transparent region towards the transparent region, the thickness of the second light deflection portion gradually increases, and a medium with a refractive index smaller than that of the second light deflection portion is filled on a side of the second light deflection portion away from the pixel unit; the first light deflection portion and at least part of the second light deflection portion are configured to jointly deflect the image light towards the transparent region for display in the transparent region.

4. The display substrate according to claim 3, wherein, the cross-sectional shape of the second light deflection portion intercepted by a plane perpendicular to the substrate is the same as the cross-sectional shape of the first light deflection portion intercepted by the plane.

5. The display substrate according to claim 1, wherein, along a direction parallel to the substrate and from a direction away from the transparent region towards the transparent region, the thickness of the first light deflection portion gradually decreases; the display substrate further includes: a second optical layer, attached to a surface of the first light deflection portion away from the pixel unit, and the refractive index of the second optical layer is greater than that of the first light deflection portion.

6. The display substrate according to claim 5, wherein, along a direction parallel to the substrate and from a direction away from the transparent region towards the transparent region, the thickness of a part of the first optical layer other than the first light deflection portion gradually becomes smaller.

7. The display substrate according to any one of claims 2-6, wherein, the shape of a surface of the first light deflection portion on a side away from the pixel unit intercepted by a plane perpendicular to the substrate is a straight line or a curve.

8. The display substrate according to any one of claims 1-6, wherein, Along a direction perpendicular to the substrate, the position of the substrate opposite to the transparent region includes a through hole.

9. The display substrate according to any one of claims 1-6, wherein, the substrate is a transparent substrate.

10. The display substrate according to any one of claims 1-6, wherein, the display substrate is an array substrate or a color filter substrate.

11. The display substrate according to claim 1, wherein, the display substrate is cover glass, the substrate includes a groove, and the first optical layer is located in the groove; along a direction parallel to the substrate and from a position away from the transparent region towards the transparent region, the thickness of the first light deflection portion gradually decreases; the refractive index of the substrate is greater than that of the first optical layer, and the substrate is located on the light output side of the first optical layer.

12. The display substrate according to claim 11, wherein, the surface of the first optical layer away from the substrate is flush with the surface of the substrate.

13. A display panel, comprising: the display substrate according to any one of claims 1-12, wherein, in a direction perpendicular to the substrate, the position of the display panel opposite to the transparent region is transparent.

14. A display device, comprising: the display panel according to claim 13, and a functional component located in the transparent region and on the non-light output side of the display panel.

15. The display device according to claim 14, wherein, the functional component includes at least one of a camera module, a 3D structured light module, a time-of-flight 3D imaging module, and an infrared sensing module.

Images