Display panel and display apparatus

Abstract

A display panel and a display apparatus. The display panel comprises: a substrate (110); a driving device layer (120) disposed on the substrate (110), where the driving device layer (120) comprises a driving device (121); and a first light shielding layer (130) disposed on the side of the driving device layer (120) away from the substrate (110), where the vertical projection of the first light shielding layer (130) on the substrate (110) covers the vertical projection of at least a portion of the driving device (121) on the substrate (110).

Description

Display panel and display device

[0001] The present application claims priority to the Chinese patent application No. 202411389026.X, filed on September 30, 2024, with the Chinese Patent Office, the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] Embodiments of the present application relate to the display technical field, for example, to a display panel and a display device. BACKGROUND

[0003] Users have higher and higher requirements for the display of display panels in strong light, for example, users have high requirements for the display of outdoor wear products in strong light. In the related art, strong light has a great impact on the display panel, which reduces the display effect of the display panel. SUMMARY

[0004] The present application provides a display panel and a display device to improve the display effect of the display panel.

[0005] In a first aspect, embodiments of the present application provide a display panel, comprising:

[0006] a substrate;

[0007] a driving device layer disposed on the substrate, the driving device layer comprising a driving device;

[0008] a first light shielding layer disposed on a side of the driving device layer away from the substrate, a vertical projection of the first light shielding layer on the substrate covering at least part of a vertical projection of the driving device on the substrate.

[0009] Optionally, the display panel further comprises:

[0010] a conductive layer disposed on a side of the driving device layer away from the substrate, the conductive layer comprising a signal transmission line;

[0011] a pixel electrode layer disposed on a side of the conductive layer away from the substrate, the pixel electrode layer comprising a pixel electrode;

[0012] the conductive layer or the pixel electrode layer is multiplexed as the first light shielding layer, or the first light shielding layer is disposed between the conductive layer and the pixel electrode layer;

[0013] Optionally, the driving device is configured to form a pixel driving circuit.

[0014] Optionally, the driving device comprises a transistor and a capacitor, the driving device layer comprises a first metal layer, a second metal layer and a third metal layer which are stacked on the substrate, the first metal layer comprises a gate of the transistor, the second metal layer comprises a plate of the capacitor, and the third metal layer comprises a source / drain of the transistor.

[0015] Optionally, the conductive layer comprises a signal transmission layer.

[0016] Optionally, the signal transmission layer comprises a fourth metal layer, and the fourth metal layer comprises a first signal transmission line.

[0017] Optionally, the signal transmission layer further comprises a fifth metal layer, and the fifth metal layer comprises a second signal transmission line.

[0018] Optionally, the display panel further comprises a planarization layer which is arranged between the driving device layer and the signal transmission layer.

[0019] Optionally, the first light shielding layer comprises a gap, and the display panel further comprises:

[0020] a second light shielding layer which is arranged on a side of the driving device layer away from the substrate, and a vertical projection of the second light shielding layer on the substrate covers at least part of a vertical projection of the gap on the substrate.

[0021] Optionally, when the display panel comprises a conductive layer and the pixel electrode layer, one of the conductive layer and the pixel electrode layer is multiplexed as the first light shielding layer, and the other is multiplexed as the second light shielding layer.

[0022] Optionally, the display panel further comprises:

[0023] a touch electrode layer which is arranged on a side of the first light shielding layer away from the substrate, and the touch electrode layer is multiplexed as the second light shielding layer.

[0024] Optionally, when the first light shielding layer is multiplexed as the pixel electrode layer, a vertical projection of the touch electrode layer on the substrate covers a vertical projection of a first gap between adjacent pixel electrodes on the substrate.

[0025] Optionally, the touch electrode layer comprises a mesh structure.

[0026] Optionally, a width of a touch electrode line of the touch electrode layer is greater than or equal to a width of the first gap.

[0027] Optionally, the width of the touch electrode line of the touch electrode layer ranges from 4 to 6 microns, and / or the width of the first gap ranges from 3.5 to 5.5 microns.

[0028] Optionally, a vertical projection of the touch electrode line on the substrate overlaps with vertical projections of the pixel electrodes on both sides of the first gap on the substrate.

[0029] Optionally, the pixel electrode layer comprises a first indium tin oxide layer, a silver layer and a second indium tin oxide layer stacked in sequence along a thickness direction of the substrate, and between adjacent pixel electrodes, the first gap is at least one of a gap between the first indium tin oxide layers corresponding to the adjacent pixel electrodes, a gap between the silver layers corresponding to the adjacent pixel electrodes and a gap between the second indium tin oxide layers corresponding to the adjacent pixel electrodes.

[0030] Optionally, the first gap is a gap between the silver layers corresponding to the adjacent pixel electrodes.

[0031] Optionally, the touch electrode layer comprises a plurality of touch electrode lines, and a vertical projection of a middle line of at least one touch electrode line in an extension direction on the substrate coincides with a vertical projection of a middle line of the first gap in the extension direction on the substrate.

[0032] Optionally, the touch electrode layer is divided into at least two touch sensing areas, and a vertical projection of the touch sensing area on the pixel electrode layer covers a plurality of pixel electrodes; the touch electrode layers in different touch sensing areas are insulated.

[0033] Optionally, the touch electrode layers in different touch sensing areas have a second gap therebetween.

[0034] Optionally, a vertical projection of the second gap on the substrate at least partially overlaps with a vertical projection of the pixel electrode layer on the substrate.

[0035] Optionally, the display panel further comprises a pixel definition layer, the pixel definition layer is arranged between the pixel electrode layer and the touch electrode layer; the pixel definition layer has an opening thereon, and a vertical projection of the pixel electrode layer on the pixel definition layer covers the opening.

[0036] Optionally, a vertical projection of a mesh opening of the mesh structure of the touch electrode layer on the substrate at least partially overlaps with a vertical projection of the opening on the substrate.

[0037] Optionally, the display panel further comprises a support column on a side of the pixel definition layer away from the substrate; the support column is symmetric about a middle line of the pixel definition layer.

[0038] Optionally, the touch electrode layer comprises at least one metal layer, and a vertical projection of at least one metal layer on the substrate at least covers a vertical projection of part of the first gap on the substrate.

[0039] Optionally, the display panel further comprises a light emitting device layer, the light emitting device layer is arranged between the pixel electrode layer and the touch electrode layer, a vertical projection of the light emitting device layer on the substrate overlaps a vertical projection of the pixel electrode layer on the substrate, and the light emitting device layer is connected with the pixel electrode layer.

[0040] Optionally, the light emitting device layer comprises at least two light emitting devices of different light emitting colors, and the light emitting devices of different light emitting colors correspond to pixel electrodes of different sizes.

[0041] Optionally, the light emitting device layer comprises red light emitting devices, green light emitting devices and blue light emitting devices, the green light emitting devices correspond to pixel electrodes of a size smaller than that of the red light emitting devices, and / or the green light emitting devices correspond to pixel electrodes of a size smaller than that of the blue light emitting devices.

[0042] Optionally, the display panel further comprises an encapsulation layer, the encapsulation layer is arranged between the light emitting device layer and the touch electrode layer, and the encapsulation layer is arranged to encapsulate the light emitting device layer.

[0043] Optionally, the encapsulation layer comprises a first inorganic encapsulation layer, an organic encapsulation layer and a second inorganic encapsulation layer which are sequentially arranged in a thickness direction of the substrate.

[0044] In a second aspect, the embodiments of the present application further provide a display device comprising the display panel.

[0045] The technical scheme of the embodiments of the present application can at least partially cover the driver devices in the vertical projection of the first light shielding layer on the substrate, so that the external light can be at least partially blocked from transmitting to the driver devices, thereby reducing the external light irradiating to the driver devices, reducing the influence of the external light on the driver devices in the pixel driving circuit, improving the light leakage and performance non-uniformity of the driver devices in the pixel driving circuit, and improving the display effect of the display panel. BRIEF DESCRIPTION OF DRAWINGS

[0046] FIG. 1 is a structural schematic diagram of a pixel driving circuit according to an embodiment of the present application;

[0047] FIG. 2 is a schematic diagram of a cross-sectional structure of a display panel according to an embodiment of the present application;

[0048] FIG. 3 is a schematic diagram of a cross-sectional structure of another display panel according to an embodiment of the present application;

[0049] FIG. 4 is a schematic diagram of a cross-sectional structure of another display panel according to an embodiment of the present application;

[0050] FIG. 5 is a schematic view of a cross-sectional structure of another display panel according to an embodiment of the present application;

[0051] FIG. 6 is a schematic view of a partial planar structure of a display panel according to an embodiment of the present application;

[0052] FIG. 7 is a schematic view of a partial structure of a touch electrode layer according to an embodiment of the present application;

[0053] FIG. 8 is a schematic view of a cross-sectional structure of another display panel according to an embodiment of the present application;

[0054] FIG. 9 is a schematic view of a structure of a display device according to an embodiment of the present application. DETAILED DESCRIPTION

[0055] The present application will be described in detail below with reference to the accompanying drawings and embodiments. The embodiments described herein are merely intended to explain the present application, but not to limit the present application. For the purpose of description, only parts related to the present application are shown in the accompanying drawings, but not all structures.

[0056] The display panel includes an array substrate and a light emitting device layer. The array substrate is provided with a pixel driving circuit, and the light emitting device layer is provided with a light emitting device. The pixel driving circuit is connected to the light emitting device and is configured to drive the light emitting device to emit light, thereby realizing display of the display panel. FIG. 1 is a schematic view of a structure of a pixel driving circuit according to an embodiment. As shown in FIG. 1, in the process of implementing the present application, it is found that the pixel driving circuit includes a driving device T1. External light can pass through a gap between a screen body of the display panel and reach the driving device T1, which causes the driving device T1 to have light leakage and other problems, thereby resulting in poor display effect of the display panel.

[0057] To solve the above technical problem, the present application provides a display panel. FIG. 2 is a schematic view of a cross-sectional structure of a display panel according to an embodiment of the present application. As shown in FIG. 2, the display panel includes:

[0058] a substrate 110;

[0059] a driving device layer 120 disposed on the substrate 110, the driving device layer 120 including a driving device 121;

[0060] a first light shielding layer 130 disposed on a side of the driving device layer 120 away from the substrate 110, a vertical projection of the first light shielding layer 130 on the substrate 110 covering at least part of a vertical projection of the driving device 121 on the substrate 110.

[0061] The substrate 110 can be a flexible substrate or a rigid substrate. The driving device layer 120 can include a plurality of layers of conductive films and insulating layers, and is configured to form a driving device 121 in a pixel driving circuit. The pixel driving circuit can be a 7T1C circuit provided by the related art, i.e., the pixel driving circuit includes one driving transistor, six switching transistors, and one storage capacitor. The driving device layer 120 can be configured to form one driving transistor, six switching transistors, and one storage capacitor. During operation of the pixel driving circuit, the driving transistor provides a driving current for the light emitting device to drive the light emitting device to emit light.

[0062] The first light shielding layer 130 has a light shielding effect. The material of the first light shielding layer 130 can be metal, which is configured to shield external light. When a vertical projection of the first light shielding layer 130 on the substrate 110 covers at least part of a vertical projection of the driving device 121 on the substrate 110, the first light shielding layer 130 covers at least part of the driving device 121 in the thickness direction Z of the display panel. When external light S enters the display panel from a side of the first light shielding layer 130 away from the driving device layer 120, the first light shielding layer 130 can at least partially block the external light S from reaching the driving device 121, thereby reducing the external light S that irradiates the driving device 121 and avoiding the influence of the external light S on the driving device 121 in the pixel driving circuit, improving the light leakage phenomenon of the driving device 121 in the pixel driving circuit, and improving the display effect of the display panel. The material of the first light shielding layer 130 can also be an optical absorption material or the like, which is configured to absorb external light and reduce the external light S that irradiates the driving device 121.

[0063] Referring back to FIG. 2, the first insulating layer 131 is between the first light shielding layer 130 and the driving device layer 120, and is configured to insulate the first light shielding layer 130 from the driving device layer 120.

[0064] The technical solution of the embodiment can at least partially block the transmission of external light to the driving device 121 by configuring the vertical projection of the first light shielding layer 130 on the substrate 110 to cover at least part of the vertical projection of the driving device 121 on the substrate 110, thereby reducing the external light that irradiates the driving device 121, reducing the influence of the external light on the driving device 121 in the pixel driving circuit, improving the light leakage and performance non-uniformity of the driving device 121 in the pixel driving circuit, and improving the display effect of the display panel.

[0065] FIG. 3 is a schematic diagram of a cross-sectional structure of another display panel provided by an embodiment of the present application. As shown in FIG. 3, the display panel further includes:

[0066] The conductive layer 140 is disposed on a side of the driving device layer 120 away from the substrate 110, and the conductive layer 140 includes a signal transmission line.

[0067] The pixel electrode layer 150 is disposed on the side of the conductive layer 140 away from the substrate 110, and the pixel electrode layer 150 includes a pixel electrode 151.

[0068] The conductive layer 140 or the pixel electrode layer 150 is multiplexed as the first light shielding layer 130, or the first light shielding layer 130 is disposed between the conductive layer 140 and the pixel electrode layer 150.

[0069] For example, when the display panel includes a light emitting device layer, the pixel electrode 151 can be in contact with the light emitting device layer to form a light emitting device. At this time, the pixel electrode 151 serves as an electrode of the light emitting device. The pixel electrode 151 can be disposed corresponding to a pixel driving circuit on the substrate 110 and connected to the corresponding pixel driving circuit, so that the pixel driving circuit is connected to the electrode of the light emitting device, and is configured to provide a driving current for the electrode of the light emitting device to drive the light emitting device to emit light. The pixel electrode layer 150 can include at least two pixel electrodes 151, and the adjacent pixel electrodes 151 have a first gap 152 therebetween, so that the adjacent pixel electrodes 151 are insulated from each other, thereby enabling independent control of the light emission of different light emitting devices. The conductive layer 140 and the pixel electrode layer 150 are both disposed on the side of the driving device layer 120 away from the substrate 110. The conductive layer 140 and the pixel electrode layer 150 can both be metal layers. By multiplexing the conductive layer 140 or the pixel electrode layer 150 as the first light shielding layer 130, i.e., by disposing the vertical projection of the conductive layer 140 on the substrate 110 to cover at least part of the vertical projection of the driving device 121 on the substrate 110, or by disposing the vertical projection of the pixel electrode layer 150 on the substrate 110 to cover at least part of the vertical projection of the driving device 121 on the substrate 110, the external light S can also be at least partially blocked from reaching the driving device 121, thereby improving the light leakage of the driving device 121. At the same time, the existing film layer of the display panel can also be multiplexed, and no additional mask is needed, which is conducive to reducing the cost of the display panel. Alternatively, an additional light shielding layer can be disposed between the conductive layer 140 and the pixel electrode layer 150 as the first light shielding layer 130. The light shielding layer can be formed in the array process of the display panel to improve the light leakage of the driving device 121. In FIG. 3, the pixel electrode layer 150 is multiplexed as the first light shielding layer 130.

[0070] The driving device 121 is configured to form a pixel driving circuit. In some embodiments, the driving device 121 includes a transistor and a capacitor, and the driving device layer 120 includes a first metal layer, a second metal layer, and a third metal layer stacked on the substrate. The first metal layer includes a gate of the transistor, the second metal layer includes the capacitor, and the third metal layer includes a source / drain of the transistor. The second metal layer includes a plate of the capacitor.

[0071] Exemplarily, the first metal layer and the second metal layer can have a gate insulating layer therebetween, and the second metal layer and the third metal layer can have an interlayer insulating layer therebetween. The driver device layer 120 can further include an active layer disposed between the substrate 110 and the first metal layer, and configured to form an active region of a transistor. By disposing the metal layers, the insulating layers and the active layer in the driver device layer 120, the driver devices 121 in the pixel driving circuit and the connection lines between different driver devices 121 can be formed.

[0072] In some embodiments, the conductive layer 140 includes a signal transmission layer configured to form signal transmission lines and connected to the driver devices 121 in the pixel driving circuit to provide driving signals for the pixel driving circuit. Exemplarily, the conductive layer 140 in FIG. 3 is the signal transmission layer.

[0073] In some embodiments, the signal transmission layer includes a fourth metal layer, and the fourth metal layer includes a first signal transmission line.

[0074] Exemplarily, the first signal transmission line is configured to provide driving signals for the pixel driving circuit. Exemplarily, the first signal transmission line can include a power signal line. When the fourth metal layer is multiplexed as the first light shielding layer, the vertical projection of the first signal transmission line on the driver device layer 120 can be configured to cover at least part of the driver devices 121, so that the first signal transmission line can at least partially block external light from reaching the driver devices 121, thereby improving the light leakage phenomenon of the driver devices 121.

[0075] In some embodiments, the signal transmission layer further includes a fifth metal layer, and the fifth metal layer includes a second signal transmission line.

[0076] Exemplarily, in some display panels, the signal transmission layer further includes a fifth metal layer including a second signal transmission line. The second signal transmission line can transmit different driving signals from the first signal transmission line. By configuring the fourth metal layer and the fifth metal layer to form signal transmission lines, the arrangement of the signal transmission lines can be simplified. When the fifth metal layer is multiplexed as the first light shielding layer, the vertical projection of the second signal transmission line on the driver device layer 120 can be configured to cover at least part of the driver devices 121, so that the second signal transmission line can at least partially block external light from reaching the driver devices 121, thereby improving the light leakage phenomenon of the driver devices 121.

[0077] With continued reference to FIG. 3, the display panel further includes a planarization layer 160 disposed between the driver device layer 120 and the signal transmission layer.

[0078] The planarization layer 160 is disposed on the side of the signal transmission layer close to the substrate 110. The planarization layer 160 not only can planarize the plane where the signal transmission layer is located, but also can improve the reliability of the signal lines on the signal transmission layer. In addition, the vertical distance between the driving device layer 120 and the signal transmission layer can be increased, so that the signal transmission layer and other film layers on the side away from the substrate 110 can be used as a light shielding layer to block external light S, and the light leakage of the driving device 121 can be further improved.

[0079] With continuous reference to FIG. 3, the display panel further includes a second insulating line 161 disposed between the conductive layer 140 and the pixel electrode layer 150, and configured to insulate the conductive layer 140 and the pixel electrode layer 150, and to planarize the surface of the conductive layer 140, which is conducive to the arrangement of the pixel electrode layer 150.

[0080] In some embodiments, the first light shielding layer 130 includes a gap, and the display panel further includes a second light shielding layer disposed on the side of the driving device layer 120 away from the substrate 110, and a vertical projection of the second light shielding layer on the substrate 110 covers at least part of the vertical projection of the gap on the substrate 110.

[0081] When the first light shielding layer 130 has a gap, external light S is likely to enter the driving device 121 from the gap of the first light shielding layer 130. When the conductive layer 140 or the pixel electrode layer 150 is multiplexed as the first light shielding layer 130, there are gaps between different signal transmission lines or between different pixel electrodes 151. In this case, a second light shielding layer can be additionally disposed on the side of the first light shielding layer 130 away from the substrate 110, and the second light shielding layer can cover at least part of the gap of the first light shielding layer 130, so as to shield external light S from the gap of the first light shielding layer 130, thereby further blocking external light S from entering the driving device 121 and improving the light leakage of the driving device 121.

[0082] FIG. 4 is a schematic diagram of a cross-sectional structure of another display panel according to an embodiment of the present application. As shown in FIG. 4, when the display panel includes the conductive layer 140 and the pixel electrode layer 150, one of the conductive layer 140 and the pixel electrode layer 150 is multiplexed as the first light shielding layer 130, and the other is multiplexed as the second light shielding layer 170.

[0083] Exemplarily, as shown in FIG. 4, there are gaps between different signal transmission lines on the conductive layer 140, and there are gaps between different pixel electrodes 151 in the pixel electrode layer 150. When the pixel electrode layer 150 is arranged on the layer of the conductive layer 140 away from the substrate 110, the conductive layer 140 can be multiplexed as the first light shielding layer 130, and the pixel electrode layer 150 can be multiplexed as the second light shielding layer 170. By arranging the pixel electrode layer 150 and the conductive layer 140 to at least partially not overlap in the vertical projection on the substrate 110, the conductive layer 140 and the pixel electrode layer 150 can cover the gaps of each other, so as to block the external light S at the gaps, and further block the external light S from reaching the driving device, thereby improving the light leakage phenomenon of the driving device.

[0084] In other embodiments, the first light shielding layer 130 can also be arranged on the layer of the second light shielding layer 170 away from the substrate 110, which is not limited here.

[0085] FIG. 5 is a schematic diagram of a cross-sectional structure of another display panel provided by an embodiment of the present application. As shown in FIG. 5, the display panel further includes:

[0086] The touch electrode layer 180 is arranged on the side of the first light shielding layer 130 away from the substrate 110, and the touch electrode layer 180 is multiplexed as the second light shielding layer 170.

[0087] Exemplarily, the touch electrode layer 180 can include touch electrode lines arranged to realize the touch function of the display panel. Exemplarily, the touch electrode layer 180 includes a metal layer, and the touch electrode lines are formed by patterning the metal layer. When the touch electrode layer 180 is multiplexed as the second light shielding layer 170, the vertical projection of the touch electrode layer 180 on the first light shielding layer 130 can be arranged to cover at least part of the vertical projection of the gap of the first light shielding layer 130 on the substrate 110, that is, in the thickness direction Z of the display panel, the touch electrode layer 180 can cover at least part of the gap of the first light shielding layer 130. When the external light S enters the display panel from the side of the touch electrode layer 180 away from the substrate 110, at least part of the external light S is blocked by the touch electrode layer 180 at the gap of the first light shielding layer 130; so as to further block the external light S from reaching the driving device under the light shielding effect of the first light shielding layer 130. The influence of the external light S on the driving device in the pixel driving circuit is avoided, the light leakage phenomenon of the driving device in the pixel driving circuit is improved, and the display effect of the display panel is improved.

[0088] The touch control structure formed by the touch control electrode layer 180 can be any form of touch control structure. For example, in some embodiments, the display panel further comprises a light emitting device layer and an encapsulation layer 210 (the light emitting device layer is not shown in FIG. 5), the light emitting device layer is disposed on a side of the pixel electrode layer 150 away from the substrate 110, and the encapsulation layer 210 is disposed on a side of the light emitting device layer away from the substrate 110. The touch control electrode layer 180 can be integrated in the display panel, for example, can be disposed on the encapsulation layer 210 to form an in-cell touch control structure. Alternatively, in some embodiments, the touch control related structure can be disposed on the display panel, for example, as shown in FIG. 5, the display panel can further comprise a touch control substrate 220 disposed on a side of the encapsulation layer 210 away from the light emitting device layer, and the touch control electrode layer 180 can be disposed on the touch control substrate 220 to form an on-cell touch control structure. Herein, no limitation is made.

[0089] With continued reference to FIG. 5, when the first light shielding layer 130 multiplexes the pixel electrode layer 150, the vertical projection of the touch control electrode layer 180 on the substrate 110 covers the vertical projection of the first gap 152 between adjacent pixel electrodes 151 on the substrate 110.

[0090] For example, the pixel electrode layer 150 can comprise at least two pixel electrodes 151, and the first gap 152 is between different pixel electrodes 151. When the pixel electrode layer 150 serves as the first light shielding layer 130, the touch control electrode layer 180 can cover the first gap 152. At the first gap 152, at least part of the external light S is blocked by the touch control electrode layer 180; at the pixel electrode 151, the external light S is blocked by the pixel electrode layer 150. Thus, the external light S can be blocked by the pixel electrode layer 150 and the touch control electrode layer 180 from reaching the driving device, avoiding the influence of the external light S on the driving device in the pixel driving circuit, improving the light leakage phenomenon of the driving device in the pixel driving circuit, and improving the display effect of the display panel.

[0091] Based on the above technical solutions, FIG. 6 is a partial planar structure schematic diagram of a display panel provided by an embodiment of the present application. As shown in FIG. 6, the touch control electrode layer 180 comprises a mesh structure.

[0092] For example, the shape of the touch control electrode layer 180 can be set according to the touch control requirement. By setting the touch control electrode layer 180 to comprise a mesh structure, the light transmittance of the touch control electrode layer 180 can be improved, thereby the light extraction efficiency of the display panel can be improved, and the display effect of the display panel can be further improved. For example, when forming the touch control electrode layer 180, a whole metal layer can be first formed, and then the metal layer can be patterned by a touch mask to form the touch control electrode layer 180. Herein, the shape of the touch mask can be set according to the touch control requirement.

[0093] With reference back to FIGS. 5 and 6, the width d1 of the touch electrode line of the touch electrode layer 180 is greater than or equal to the width d2 of the first gap 152.

[0094] For example, when the touch electrode layer 180 is in a mesh shape, the width d1 of the touch electrode line of the touch electrode layer 180 is the line width of the mesh. The width d2 of the first gap 152 is the vertical distance between adjacent pixel electrodes 151. When the touch electrode layer 180 covers the first gap 152 in the thickness direction Z of the display panel, the width d1 of the touch electrode line of the touch electrode layer 180 can be set to be greater than or equal to the width d2 of the first gap 152, so that the touch electrode layer 180 can completely cover the first gap 152 in the thickness direction Z of the display panel, thereby completely blocking external light S at the first gap 152, avoiding the influence of external light S on the driving device in the pixel driving circuit, improving the light leakage phenomenon of the driving device in the pixel driving circuit, and improving the display effect of the display panel.

[0095] In some embodiments, the width of the touch electrode line of the touch electrode layer 180 ranges from 4 to 6 microns, and / or the width of the first gap 152 ranges from 3.5 to 5.5 microns. For example, the width d1 of the touch electrode line of the touch electrode layer 180 can be 4 microns, 5 microns, or 6 microns, and the width d2 of the first gap 152 can be 3.5 microns, 4 microns, 4.5 microns, 5 microns, or 5.5 microns. In this case, the size of the pixel electrode 151 can be increased to reduce the first gap 152 between different pixel electrodes 151.

[0096] In some embodiments, the vertical projection of the touch electrode line on the substrate 110 overlaps the vertical projection of the pixel electrode 151 on the substrate 110 on both sides of the first gap 152, so that the touch electrode line completely covers the first gap 152 in the thickness direction of the display panel, thereby completely blocking external light at the first gap 152, avoiding the influence of external light on the driving device in the pixel driving circuit, improving the light leakage phenomenon of the driving device in the pixel driving circuit, and improving the display effect of the display panel.

[0097] In some embodiments, the pixel electrode layer 150 includes a first indium tin oxide layer, a silver layer, and a second indium tin oxide layer stacked in the thickness direction of the substrate 110. Between adjacent pixel electrodes 151, the first gap 152 is at least one of a gap between the first indium tin oxide layers corresponding to the adjacent pixel electrodes 151, a gap between the silver layers corresponding to the adjacent pixel electrodes 151, and a gap between the second indium tin oxide layers corresponding to the adjacent pixel electrodes 151.

[0098] The silver layer is configured to ensure the conductivity of the pixel electrode layer 150. The first ITO layer and the second ITO layer can protect the silver layer and reduce the probability of oxidation of the silver layer. When the size of the pixel electrode 151 is increased, the size of the first ITO layer, the silver layer and the second ITO layer can be increased synchronously, so that the gap between adjacent first ITO layers, the gap between adjacent silver layers and the gap between adjacent second ITO layers are all the first gap 152. This not only reduces the gap between adjacent pixel electrodes 151 to the first gap 152, but also forms the first ITO layer, the silver layer and the second ITO layer through the same mask, thereby reducing the manufacturing cost of the display panel. Alternatively, the size of the first ITO layer, the silver layer and the second ITO layer can be increased separately, which is not limited herein.

[0099] In some embodiments, the first gap 152 is the gap between the silver layers corresponding to adjacent pixel electrodes 151. After the silver layers shield external light, the first gap 152 can be covered by the second light shielding layer 170, thereby further shielding the external light entering the gap between the silver layers. As a result, the external light can be completely blocked from reaching the driving device, thereby avoiding the influence of the external light on the driving device in the pixel driving circuit, improving the light leakage phenomenon of the driving device in the pixel driving circuit, and improving the display effect of the display panel.

[0100] With reference to FIGS. 5 and 6, the touch electrode layer 180 includes a plurality of touch electrode lines. The vertical projection of at least one touch electrode line on the substrate 110 along the middle line N1 of the extension direction coincides with the vertical projection of the first gap 152 on the substrate 110 along the middle line N2 of the extension direction.

[0101] For example, as shown in FIG. 5, the touch electrode lines on the touch electrode layer 180 are symmetrically arranged about the middle line of the first gap 152, so that the distance from two edges of the touch electrode lines to two edges of the first gap 152 is equal. As a result, the touch electrode lines can maximally shield the external light S at the first gap 152, thereby further improving the light leakage phenomenon of the driving device.

[0102] FIG. 7 is a schematic view of a partial structure of a touch electrode layer according to an embodiment of the present application. As shown in FIG. 7, the touch electrode layer 180 is divided into at least two touch sensing areas 181. The vertical projection of the touch sensing area 181 on the pixel electrode layer 150 covers a plurality of pixel electrodes 151. The touch electrode layers 180 in different touch sensing areas 181 are insulated. For example, the touch electrode layers 180 in different touch sensing areas 181 are arranged at intervals.

[0103] The touch sensing area 181 can be set according to the touch accuracy. When the touch accuracy requirement is high, the touch sensing area 181 is small. When the touch accuracy requirement is low, the touch sensing area 181 is large. When the touch sensing area 181 is determined, the touch sensing area 181 can be determined according to the human finger. The touch electrode layer 180 can be divided into a plurality of touch sensing areas 181, and the touch electrode layers 180 in different touch sensing areas 181 are insulated, so that the touch electrode layers 180 in different touch sensing areas 181 can be independently controlled, thereby realizing the touch of the display panel.

[0104] Each touch sensing area 181 can correspond to a plurality of pixels, so that the range corresponding to each touch sensing area 181 on the pixel electrode layer 150 includes a plurality of pixel electrodes 151, and the adjacent pixel electrodes 151 have a first gap 152. At this time, the touch electrode layer 180 can be arranged on the first gap 152 according to the touch requirement of the touch electrode layer 180 in the touch sensing area 181, so that the touch electrode layer 180 in the touch sensing area 181 covers at least part of the first gap 152. Thus, on the basis of ensuring the touch requirement of the touch electrode layer 180 in the touch sensing area 181, the external light is shielded from the substrate 110, the influence of the external light on the driving device in the pixel driving circuit is reduced, the light leakage phenomenon of the driving device in the pixel driving circuit is improved, and the display effect of the display panel is improved.

[0105] Continuing to refer to FIG. 7, the touch electrode layers 180 in different touch sensing areas 181 have a second gap 182.

[0106] The touch electrode layers 180 in different touch sensing areas 181 can have a second gap 182, so that the touch electrode layers 180 in different touch sensing areas 181 are insulated, thereby realizing independent control of the touch electrode layers 180 in different touch sensing areas 181.

[0107] In some embodiments, the vertical projection of the second gap 182 on the substrate 110 at least partially overlaps the vertical projection of the pixel electrode layer 150 on the substrate 110. When the touch electrode layer 180 shields the external light, the external light enters the second gap 182, and the pixel electrode layer 150 can shield the external light in the second gap 182, thereby further blocking the external light from reaching the driving device and improving the light leakage phenomenon of the driving device.

[0108] FIG. 8 is a schematic view of a cross-sectional structure of another display panel according to an embodiment of the present application. As shown in FIG. 8, the display panel further includes a pixel definition layer 190 disposed between the pixel electrode layer 150 and the touch electrode layer 180. The pixel definition layer 190 has an opening, and the vertical projection of the pixel electrode layer 150 on the pixel definition layer 190 covers the opening.

[0109] For example, the pixel definition layer 190 is configured to define the position of the pixel. At the opening, the pixel definition layer 190 exposes the pixel electrode layer 150, and forms a light emitting device layer in the opening, so that the light emitting device layer overlaps the pixel electrode layer 150 in the vertical direction. The vertical projection of the pixel electrode layer 150 on the pixel definition layer 190 covers the opening, so that the pixel definition layer 190 can at least partially cover the pixel electrode layer 150, avoiding abnormality of the light emitting device caused by manufacturing process error of the display panel. In addition, the overlapping part of the pixel electrode layer 150 and the pixel definition layer 190 in the vertical direction can be made as large as possible, so that the first gap 152 between different pixel electrode layers 150 can be relatively small. When the touch electrode layer 180 is disposed, the width of the touch electrode layer 180 can be reduced, which is beneficial to the touch control of the touch electrode layer 180. For example, the first gap 152 between different pixel electrode layers 150 can just meet the insulation distance requirement of different pixel electrode layers 150.

[0110] In some embodiments, the vertical projection of the mesh opening of the mesh structure of the touch electrode layer 180 on the substrate 110 at least partially overlaps the vertical projection of the opening on the substrate 110.

[0111] In some embodiments, the display panel further includes a support column SPC disposed on the side of the pixel definition layer 190 away from the substrate 110, and the support column SPC is symmetric about the middle line N3 of the pixel definition layer 190.

[0112] For example, the pixel definition layer 190 is configured to define the position of the light emitting device. The support column SPC is disposed on the pixel definition layer 190 and is configured to support the film layer structure (for example, a mask plate) on the side of the pixel definition layer 190 away from the substrate 110. The damage of the film layer structure on the side of the pixel definition layer 190 away from the substrate 110 to the light emitting device layer can be reduced, which is beneficial to improve the service life of the display panel. For example, the pixel definition layer 190 and the support column SPC can be an integrated structure. In the preparation process of the display panel, the pixel definition layer 190 and the support column SPC can be prepared by the same film layer, for example, the pixel definition layer 190 and the support column SPC can be prepared by a half-tone mask process at the same time, which is not limited herein.

[0113] Continuing to refer to FIG. 8, the display panel further includes a light emitting device layer 200 disposed between the pixel electrode layer 150 and the touch electrode layer 180, a vertical projection of the light emitting device layer 200 on the substrate 110 has an overlap with a vertical projection of the pixel electrode layer 150 on the substrate 110, and the light emitting device layer 200 is connected with the pixel electrode layer 150.

[0114] For example, the light emitting device layer 200 can include a light emitting functional layer. The light emitting device layer 200 is disposed on the pixel electrode 151, and at this time, the pixel electrode 151 can serve as an anode of a light emitting device together with the light emitting device layer 200. Different light emitting device layers 200 can have light emitting layers of different light emitting colors to form light emitting devices of different light emitting colors. When the display panel includes the light emitting device layer 200, the pixel driving circuit on the substrate 110 can drive the light emitting device layer 200 to emit light through the pixel electrode 151, thereby realizing self-emission of the display panel. When the second gap 152 between the touch electrode layer 180 and different pixel electrodes 151 is oppositely disposed, the relative positional relationship between the touch electrode layer 180 and the light emitting device layer 200 in the thickness direction Z of the display panel has an included angle with the thickness direction Z of the display panel. When the light emitting device layer 200 self-emits light, the light A emitted by the light emitting device layer 200 has an included angle with the surface of the touch electrode layer 180 when the light A is incident on the touch electrode layer 180, and the touch electrode layer 180 can reflect the light A emitted by the light emitting device layer 200 to the pixel electrode layer 150 at a certain included angle. At this time, the pixel electrode layer 150 can block the light A reflected by the touch electrode layer 180 to the driving device, thereby avoiding the influence of the light A emitted by the light emitting device layer 200 on the driving device in the pixel driving circuit, improving the light leakage and performance non-uniformity of the driving device in the pixel driving circuit, and improving the display effect of the display panel.

[0115] For example, in the direction in which the pixel electrode layer 150 points to the touch electrode layer 180, the light emitting device layer 200 can include a hole injection layer, a hole transport layer, an electron blocking layer, a light emitting layer, a hole blocking layer, an electron transport layer, and an electron injection layer which are sequentially stacked. When the light emitting device layer 200 is configured to form light emitting devices of different colors, the light emitting layer in the light emitting device layer 200 at different openings can have different materials, so that the light emitting devices formed by different light emitting device layers 200 can emit light of different colors. For example, the light emitting devices formed by different light emitting device layers 200 can respectively emit red, green, and blue light, i.e., the display panel can include a red light emitting device, a green light emitting device, and a blue light emitting device.

[0116] A cathode layer is further provided on the side of the light emitting device layer 200 away from the pixel electrode layer 150. The cathode layer at least has an overlap with the light emitting device layer 200 in the vertical direction, so that the cathode layer serves as the cathode of the light emitting device, and is configured to provide a driving signal for the light emitting device layer 200 to make the light emitting device layer 200 emit light. Optionally, the cathode layer can be an integral film layer, in which case different light emitting devices share the cathode layer, realizing the common cathode connection of different light emitting devices. Alternatively, the cathode layer can include a plurality of insulated cathode blocks, with different light emitting devices corresponding to one cathode block, so that different light emitting devices can have independent cathodes, thereby realizing independent control of the cathodes of different light emitting devices.

[0117] In some embodiments, the light emitting device layer 200 includes at least two light emitting devices of different light emitting colors, and the light emitting devices of different light emitting colors correspond to pixel electrodes 151 of different sizes.

[0118] For example, the light emitting devices of different light emitting colors are made of different materials, so that the light emitting devices of different light emitting colors have different equivalent capacitances after the light emitting devices are formed in the light emitting device layer. By setting the light emitting devices of different light emitting colors to correspond to pixel electrodes 151 of different sizes, the area of the pixel electrode as the capacitor plate of the equivalent capacitance in the light emitting device of different light emitting colors can be adjusted, so that the equivalent capacitance of the light emitting device of different light emitting colors can be adjusted, and the equivalent capacitances of the light emitting devices of different light emitting colors can be equalized, thereby improving the color deviation phenomenon caused by the different equivalent capacitances of the light emitting devices of different light emitting colors.

[0119] In some embodiments, the light emitting device layer 200 includes red light emitting devices, green light emitting devices, and blue light emitting devices, and the size of the pixel electrode corresponding to the green light emitting device is smaller than the size of the pixel electrode corresponding to the red light emitting device, and / or the size of the pixel electrode corresponding to the green light emitting device is smaller than the size of the pixel electrode corresponding to the blue light emitting device.

[0120] For example, when the light emitting device layer includes red light emitting devices, green light emitting devices, and blue light emitting devices, the size of the pixel electrode corresponding to the green light emitting device can be set to be relatively small, so that the equivalent capacitance of the green light emitting device can be reduced, and the phenomena such as ghosting and purple display color of the display panel can be improved.

[0121] Continuing to refer to FIG. 8, the display panel further includes an encapsulation layer 210, which is disposed between the light emitting device layer 200 and the touch electrode layer 180, and is configured to encapsulate the light emitting device layer 200.

[0122] Exemplarily, the material of the light-emitting device layer 200 can be an organic material. An evaporation process can be used in forming the light-emitting device layer 200. After the light-emitting device layer 200 is formed by evaporation, the light-emitting device can be encapsulated. The encapsulation layer 210 encapsulates the light-emitting device layer 200, which can avoid water and oxygen in the outside from entering the light-emitting device layer 200, ensure the effectiveness of the light-emitting device layer 200, and improve the service life of the display panel. Meanwhile, the encapsulation layer 210 is arranged between the light-emitting device layer 200 and the touch electrode layer 180, so that the touch electrode layer 180 of the display panel is arranged on the encapsulation layer 210, which avoids the additional substrate for arranging the touch electrode layer 180, is conducive to reducing the manufacturing process of the display panel, and is conducive to reducing the thickness of the display panel. Exemplarily, the encapsulation layer 210 can include a first inorganic encapsulation layer, an organic encapsulation layer, and a second inorganic encapsulation layer which are sequentially arranged in the thickness direction Z of the substrate.

[0123] On the basis of the above-mentioned technical solutions, the touch electrode layer 180 includes at least one metal layer, and a vertical projection of the at least one metal layer on the substrate 110 covers at least a vertical projection of the first gap 152 on the substrate 110.

[0124] Exemplarily, when the touch electrode layer 180 includes one metal layer, the touch electrode layer 180 can form a self-capacitive touch electrode. At this time, the pattern of the metal layer can be arranged to cover the first gap as much as possible on the basis of meeting the touch requirement, so that more external light or self-emitted light can be blocked from reaching the driving device on the basis of meeting the touch requirement, the light leakage of the driving device in the pixel driving circuit and the phenomenon of uneven performance are improved, and the display effect of the display panel is improved. When the touch electrode layer 180 includes at least two metal layers, the touch electrode layer 180 can form a mutual-capacitive touch electrode. At this time, the pattern of the at least two metal layers can be arranged to cover the first gap as much as possible in any metal layer on the basis of meeting the touch requirement, so that more external light or self-emitted light can be blocked from reaching the driving device on the basis of meeting the touch requirement, the light leakage of the driving device in the pixel driving circuit and the phenomenon of uneven performance are improved, and the display effect of the display panel is improved.

[0125] The embodiment of the present application also provides a display device. FIG. 9 is a structural schematic diagram of a display device provided by the embodiment of the present application. As shown in FIG. 9, the display device includes the display panel provided by any embodiment of the present application.

[0126] Exemplarily, the display panel 11 is a display panel provided by any of the embodiments of the present application. When the display device 10 comprises the display panel provided by any of the embodiments of the present application, the same beneficial effects as the display panel provided by any of the embodiments of the present application are achieved, and details are not repeated here. The display device 10 can be any product or component with display function, such as a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, etc.

Claims

1. A display panel, comprising: a substrate; a driving device layer disposed on the substrate, wherein the driving device layer comprises driving devices; a first light shielding layer disposed on a side of the driving device layer away from the substrate, a vertical projection of the first light shielding layer on the substrate covering at least part of a vertical projection of the driving devices on the substrate.

2. The display panel of claim 1, further comprising: a conductive layer disposed on a side of the driving device layer away from the substrate, the conductive layer comprising signal transmission lines; a pixel electrode layer disposed on a side of the conductive layer away from the substrate, the pixel electrode layer comprising pixel electrodes; the conductive layer or the pixel electrode layer multiplexing as the first light shielding layer, or the first light shielding layer being disposed between the conductive layer and the pixel electrode layer; wherein the driving devices are arranged to form a pixel driving circuit; wherein the driving devices comprise transistors and capacitors, and the driving device layer comprises a first metal layer, a second metal layer and a third metal layer stacked on the substrate, the first metal layer comprising gates of the transistors, the second metal layer comprising plates of the capacitors, and the third metal layer comprising source / drain electrodes of the transistors; wherein the conductive layer comprises a signal transmission layer; wherein the signal transmission layer comprises a fourth metal layer, the fourth metal layer comprising first signal transmission lines; wherein the signal transmission layer further comprises a fifth metal layer, the fifth metal layer comprising second signal transmission lines.

3. The display panel of claim 2, further comprising a planarization layer disposed between the driving device layer and the signal transmission layer.

4. The display panel of claim 2 or 3, wherein, The first light shielding layer comprises gaps, and the display panel further comprises: a second light shielding layer disposed on a side of the driving device layer away from the substrate, a vertical projection of the second light shielding layer on the substrate covering at least part of a vertical projection of the gaps on the substrate.

5. The display panel of claim 4, wherein, When the display panel comprises the conductive layer and the pixel electrode layer, one of the conductive layer and the pixel electrode layer multiplexes as the first light shielding layer, and the other multiplexes as the second light shielding layer.

6. The display panel of claim 4, further comprising: a touch electrode layer disposed on a side of the first light shielding layer away from the substrate, the touch electrode layer multiplexing as the second light shielding layer.

7. The display panel of claim 6, wherein, When the first light shielding layer multiplexes the pixel electrode layer, a vertical projection of the touch electrode layer on the substrate covers a vertical projection of a first gap between adjacent pixel electrodes on the substrate.

8. The display panel of claim 7, wherein, The touch electrode layer comprises a mesh structure; wherein a width of a touch electrode line of the touch electrode layer is greater than or equal to a width of the first gap; wherein the width of the touch electrode line of the touch electrode layer ranges from 4 to 6 microns, or the width of the first gap ranges from 3.5 to 5.5 microns, or the width of the touch electrode line of the touch electrode layer ranges from 4 to 6 microns and the width of the first gap ranges from 3.5 to 5.5 microns. The vertical projection of the touch electrode line on the substrate overlaps the vertical projection of the pixel electrode on both sides of the first gap on the substrate.

9. The display panel of claim 8, wherein, The pixel electrode layer comprises a first indium tin oxide layer, a silver layer and a second indium tin oxide layer which are sequentially stacked along the thickness direction of the substrate. Between adjacent pixel electrodes, the first gap is at least one of the gap between the first indium tin oxide layers corresponding to adjacent pixel electrodes, the gap between the silver layers corresponding to adjacent pixel electrodes, and the gap between the second indium tin oxide layers corresponding to adjacent pixel electrodes. The first gap is the gap between the silver layers corresponding to adjacent pixel electrodes.

10. The display panel of claim 8, wherein, The vertical projection of the middle line of at least one touch electrode line on the substrate coincides with the vertical projection of the middle line of the first gap on the substrate.

11. The display panel of claim 7, wherein, The touch electrode layer is divided into at least two touch sensing areas, and the vertical projection of the touch sensing area on the pixel electrode layer covers a plurality of pixel electrodes. The touch electrode layers in different touch sensing areas are insulated.

12. The display panel of claim 11, wherein, The touch electrode layers in different touch sensing areas have a second gap. The vertical projection of the second gap on the substrate at least partially overlaps the vertical projection of the pixel electrode layer on the substrate.

13. The display panel of claim 8, further comprising a pixel definition layer disposed between the pixel electrode layer and the touch electrode layer; the pixel definition layer has an opening thereon, and the vertical projection of the pixel electrode layer on the pixel definition layer covers the opening. wherein The vertical projection of the mesh opening of the mesh structure of the touch electrode layer on the substrate at least partially overlaps the vertical projection of the opening on the substrate.

14. The display panel of claim 13, further comprising a support column on the side of the pixel definition layer away from the substrate, and the support column is symmetric about the middle line of the pixel definition layer.

15. The display panel of claim 7, wherein, The touch electrode layer comprises at least one metal layer, and the vertical projection of the at least one metal layer on the substrate at least partially covers the vertical projection of the first gap on the substrate.

16. The display panel of claim 6, further comprising a light emitting device layer disposed between the pixel electrode layer and the touch electrode layer, the vertical projection of the light emitting device layer on the substrate overlaps the vertical projection of the pixel electrode layer on the substrate, and the light emitting device layer is connected to the pixel electrode layer.

17. The display panel of claim 16, wherein, The light emitting device layer comprises at least two light emitting devices of different light emitting colors, and the sizes of the light emitting devices of different light emitting colors corresponding to the connected pixel electrodes are different.

18. The display panel of claim 17, wherein, The light-emitting device layer comprises a red light-emitting device, a green light-emitting device and a blue light-emitting device, the size of the pixel electrode corresponding to the green light-emitting device is smaller than the size of the pixel electrode corresponding to the red light-emitting device, or the size of the pixel electrode corresponding to the green light-emitting device is smaller than the size of the pixel electrode corresponding to the blue light-emitting device, or the size of the pixel electrode corresponding to the green light-emitting device is smaller than the size of the pixel electrode corresponding to the red light-emitting device, and the size of the pixel electrode corresponding to the green light-emitting device is smaller than the size of the pixel electrode corresponding to the blue light-emitting device.

19. The display panel of claim 16, further comprising an encapsulation layer disposed between the light-emitting device layer and the touch electrode layer, the encapsulation layer configured to encapsulate the light-emitting device layer. wherein The encapsulation layer comprises a first inorganic encapsulation layer, an organic encapsulation layer and a second inorganic encapsulation layer stacked in the thickness direction of the substrate.

20. A display device comprising the display panel of any one of claims 1-19.

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