Display panel and display device

Abstract

The invention discloses a display panel and a display device. The display panel includes: a substrate; a driving device layer arranged on the substrate, wherein the driving device layer comprises a driving device; the first shading layer is arranged on the side, away from the substrate, of the driving device layer, and the vertical projection of the first shading layer on the substrate covers the vertical projection of at least part of the driving device on the substrate. According to the pixel driving circuit, the vertical projection of the first shading layer on the substrate covers the vertical projection of at least part of the driving device on the substrate, so that external light can be at least partially shielded from being transmitted to the driving device, the external light irradiating the driving device can be reduced, the influence of the external light on the driving device in the pixel driving circuit is reduced, and the driving efficiency of the pixel driving circuit is improved. The phenomena of light leakage and non-uniform performance of a driving device in the pixel driving circuit are improved, and the display effect of the display panel is improved.

Description

Technical Field

[0001] Embodiments of the present invention relate to the technical field of display, and in particular, to a display panel and a display device. Background Art

[0002] Users have increasingly higher requirements for the display performance of display panels under strong light. For example, users have very high requirements for the display performance of outdoor wearable products under strong light. In the prior art, strong light has a great impact on the display panel, reducing the display effect of the display panel. Summary of the invention

[0003] The present invention provides a display panel and a display device to improve the display effect of the display panel.

[0004] In a first aspect, an embodiment of the present invention provides a display panel, including:

[0005] substrate;

[0006] A driving device layer, disposed on the substrate, the driving device layer comprising a driving device;

[0007] The first light shielding layer is arranged on a side of the driving device layer away from the substrate, and a vertical projection of the first light shielding layer on the substrate covers at least a portion of a vertical projection of the driving device on the substrate.

[0008] Optionally, the display panel further includes:

[0009] A conductive layer, disposed on a side of the driving device layer away from the substrate, the conductive layer comprising a signal transmission line;

[0010] A pixel electrode layer, disposed on a side of the conductive layer away from the substrate, the pixel electrode layer comprising a pixel electrode;

[0011] The conductive layer or the pixel electrode layer is reused as the first light shielding layer, or the first light shielding layer is arranged between the conductive layer and the pixel electrode layer;

[0012] Preferably, the driving device is used to form a pixel driving circuit;

[0013] Preferably, the driving device includes a transistor and a capacitor, the driving device layer 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 a plate of the capacitor, and the third metal layer includes a source and drain of the transistor;

[0014] Preferably, the conductive layer comprises a signal transmission layer;

[0015] Preferably, the signal transmission layer includes a fourth metal layer, and the fourth metal layer includes a first signal transmission line;

[0016] Preferably, the signal transmission layer further includes a fifth metal layer, and the fifth metal layer includes a second signal transmission line.

[0017] Optionally, the display panel further includes a planarization layer, and the planarization layer is arranged between the driving device layer and the signal transmission layer.

[0018] Optionally, the first light shielding layer includes a gap, and the display panel further includes:

[0019] A second light shielding layer, wherein the second light shielding layer is disposed 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 a portion of a vertical projection of the gap on the substrate.

[0020] Optionally, when the display panel includes 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.

[0021] Optionally, the display panel further includes:

[0022] The touch electrode layer is arranged on a side of the first light shielding layer away from the substrate, and the touch electrode layer is reused as the second light shielding layer.

[0023] Optionally, when the first light shielding layer reuses 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.

[0024] Optionally, the touch electrode layer includes a mesh structure;

[0025] Preferably, the width of the touch electrode line of the touch electrode layer is greater than or equal to the width of the first gap;

[0026] Preferably, the width of the touch electrode line of the touch electrode layer is in the range of 4-6 micrometers, and / or the width of the first gap is in the range of 3.5-5.5 micrometers;

[0027] Preferably, a vertical projection of the touch electrode line on the substrate overlaps with a vertical projection of the pixel electrodes on both sides of the first gap on the substrate.

[0028] Optionally, the pixel electrode layer includes 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, and between adjacent pixel electrodes, the first gap is at least one of a gap between the first indium tin oxide layers corresponding to adjacent pixel electrodes, a gap between the silver layers corresponding to adjacent pixel electrodes, and a gap between the second indium tin oxide layers corresponding to adjacent pixel electrodes;

[0029] Preferably, the first gap is a gap between the silver layers corresponding to adjacent pixel electrodes.

[0030] Optionally, the touch electrode layer includes a plurality of touch electrode lines, and a vertical projection of a midline of at least one of the touch electrode lines along the extension direction on the substrate coincides with a vertical projection of a midline of the first gap along the extension direction on the substrate.

[0031] 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 the pixel electrodes; and touch electrode layers in different touch sensing areas are insulated.

[0032] Optionally, there is a second gap between the touch electrode layers in different touch sensing areas;

[0033] Preferably, 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.

[0034] Optionally, the display panel further includes a pixel definition layer, which is disposed between the pixel electrode layer and the touch electrode layer; the pixel definition layer has an opening, and a vertical projection of the pixel electrode layer on the pixel definition layer covers the opening.

[0035] 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.

[0036] Optionally, the display panel further comprises a support column located on a side of the pixel definition layer away from the substrate; the support column is symmetrical about a midline of the pixel definition layer.

[0037] Optionally, the touch electrode layer includes at least one metal layer, and a vertical projection of the at least one metal layer on the substrate at least covers a portion of a vertical projection of the first gap on the substrate.

[0038] Optionally, the display panel also includes a light-emitting device layer, which is arranged between the pixel electrode layer and the touch electrode layer, the vertical projection of the light-emitting device layer on the substrate overlaps with the vertical projection of the pixel electrode layer on the substrate, and the light-emitting device layer is connected to the pixel electrode layer.

[0039] Optionally, the light-emitting device layer includes at least two light-emitting devices of different light-emitting colors, and the sizes of pixel electrodes connected to the light-emitting devices of different light-emitting colors are different.

[0040] Optionally, 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 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.

[0041] Optionally, the display panel further includes an encapsulation layer, wherein the encapsulation layer is disposed between the light-emitting device layer and the touch electrode layer, and the encapsulation layer is used to encapsulate the light-emitting device layer;

[0042] Preferably, the encapsulation layer includes a first inorganic encapsulation layer, an organic encapsulation layer, and a second inorganic encapsulation layer which are sequentially stacked along a thickness direction of the substrate.

[0043] In a second aspect, an embodiment of the present invention further provides a display device, comprising the display panel described in the first aspect.

[0044] The technical solution of the embodiment of the present invention, by setting the vertical projection of the first shading layer on the substrate to cover at least part of the driving device, can at least partially block the external light from being transmitted to the driving device, thereby reducing the external light irradiating the driving device, reducing the influence of the external light on the driving device in the pixel driving circuit, improving the optical leakage and performance unevenness of the driving device in the pixel driving circuit, and improving the display effect of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 A schematic diagram of the structure of a pixel driving circuit provided by the prior art;

[0046] Figure 2 A schematic cross-sectional structure diagram of a display panel provided by an embodiment of the present invention;

[0047] Figure 3 A schematic cross-sectional structure diagram of another display panel provided by an embodiment of the present invention;

[0048] Figure 4 A schematic cross-sectional structure diagram of another display panel provided by an embodiment of the present invention;

[0049] Figure 5 A schematic cross-sectional structure diagram of another display panel provided by an embodiment of the present invention;

[0050] Figure 6 A schematic diagram of a partial planar structure of a display panel provided by an embodiment of the present invention;

[0051] Figure 7 A schematic diagram of a partial structure of a touch electrode layer provided by an embodiment of the present invention;

[0052] Figure 8 A schematic cross-sectional structure diagram of another display panel provided by an embodiment of the present invention;

[0053] Fig. 9 A schematic structural diagram of a display device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0054] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0055] In the prior art, a display panel includes an array substrate and a light-emitting device layer. A pixel driving circuit is provided on the array substrate, and a light-emitting device is provided on the light-emitting device layer. The pixel driving circuit is connected to the light-emitting device to drive the light-emitting device to emit light, thereby realizing display of the display panel. Figure 1 The following is a schematic diagram of a pixel driving circuit provided by the prior art. Figure 1 As shown, in the process of implementing the present invention, the inventors found that the following problems exist in the related technology: the pixel driving circuit includes a driving device T1, and external light can be projected to the driving device T1 through the screen gap of the display panel, causing the driving device T1 to have problems such as light leakage, thereby making the display effect of the display panel relatively poor.

[0056] In view of the above technical problem, an embodiment of the present invention provides a display panel. Figure 2 FIG. 1 is a schematic diagram of a cross-sectional structure of a display panel provided by an embodiment of the present invention. Figure 2 As shown, the display panel includes:

[0057] substrate 110;

[0058] The driving device layer 120 is disposed on the substrate 110, and the driving device layer 120 includes a driving device;

[0059] The first light shielding layer 130 is disposed on a side of the driving device layer 120 away from the substrate 110 . The vertical projection of the first light shielding layer 130 on the substrate 110 covers at least a portion of the vertical projection of the driving device on the substrate 110 .

[0060] Specifically, the substrate 110 may be a flexible substrate or a rigid substrate. The driver device layer 120 may include a plurality of conductive film layers and an insulating layer, which are used to form a driver device in a pixel driving circuit. Exemplarily, the pixel driving circuit may be a 7T1C provided by the related art, that is, the pixel driving circuit includes a driving transistor, six switching transistors and a storage capacitor. The driver device layer 120 may be used to form a driving transistor, six switching transistors and a storage capacitor. During the operation of the pixel driving circuit, the driving transistor provides a driving current to the light-emitting device to drive the light-emitting device to emit light.

[0061] The first light shielding layer 130 has a light shielding effect. Exemplarily, the material of the first light shielding layer 130 can be metal, which is used to block external light. When the vertical projection of the first light shielding layer 130 on the substrate 110 covers at least part of the vertical projection of the driver device on the substrate 110, the first light shielding layer 130 covers at least part of the driver device in the thickness direction Z of the display panel. When external light S is incident on the display panel from the side of the first light shielding layer 130 away from the driver device layer 120, the first light shielding layer 130 can at least partially block the external light S from being incident on the driver device, reducing the external light S irradiated on the driver device, avoiding the influence of the external light S on the driver device in the pixel driving circuit, improving the phenomenon of light leakage of the driver device in the pixel driving circuit, and improving the display effect of the display panel. Exemplarily, the material of the first light shielding layer 130 can also be a light absorbing material, etc., which is used to absorb external light and reduce the external light S irradiated on the driver device.

[0062] Continue to refer Figure 1 A first insulating layer 131 is provided between the first light shielding layer 130 and the driving device layer 120 , for achieving insulation between the first light shielding layer 130 and the driving device layer 120 .

[0063] The technical solution of this embodiment is to set the vertical projection of the first shading layer on the substrate to cover at least part of the vertical projection of the driving device on the substrate, so as to at least partially block the external light from being transmitted to the driving device, thereby reducing the external light irradiating the driving device, reducing the influence of the external light on the driving device in the pixel driving circuit, improving the optical leakage and performance unevenness of the driving device in the pixel driving circuit, and improving the display effect of the display panel.

[0064] Figure 3 FIG. 1 is a schematic cross-sectional structure diagram of another display panel provided by an embodiment of the present invention. Figure 3As shown, the display panel also includes:

[0065] 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;

[0066] The pixel electrode layer 150 is disposed on a side of the conductive layer 140 away from the substrate 110 , and the pixel electrode layer 150 includes a pixel electrode 151 ;

[0067] 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 .

[0068] Specifically, when the display panel includes a light-emitting device layer, the pixel electrode 151 can contact the light-emitting device layer to form a light-emitting device. At this time, the pixel electrode 151 serves as the electrode of the light-emitting device. The pixel electrode 151 can be arranged corresponding to the pixel driving circuit on the substrate 110, and connected to the correspondingly arranged pixel driving circuit, so that the pixel driving circuit is connected to the electrode of the light-emitting device, and is used to provide a driving current to the electrode of the light-emitting device to drive the light-emitting device to emit light. The pixel electrode layer 150 may include at least two pixel electrodes 151, and there is a first gap 152 between adjacent pixel electrodes 151, so that adjacent pixel electrodes 151 are insulated, so that different light-emitting devices can be insulated from each other, and independent control of the light emission of different light-emitting devices can be achieved. The conductive layer 140 and the pixel electrode layer 150 are both arranged on the side of the driving device layer 120 away from the substrate 110. Both the conductive layer 140 and the pixel electrode layer 150 can be metal layers. By setting the conductive layer 140 or the pixel electrode layer 150 to be reused as the first light shielding layer 130, that is, setting 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 on the substrate 110, or setting 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 on the substrate 110, it is also possible to at least partially block the external light S from reaching the driving device, thereby improving the light leakage phenomenon of the driving device. At the same time, the existing film layer of the display panel can be reused without the need to set up an additional mask, which is beneficial to reducing the cost of the display panel. Alternatively, an additional light shielding layer can be set between the conductive layer 140 and the pixel electrode layer 150 as the first light shielding layer 130, and a light shielding layer can be formed in the array process of the display panel to improve the light leakage phenomenon of the driving device. Among them, Figure 3 exemplarily shows that the pixel electrode layer 150 is multiplexed as the first light shielding layer 130 .

[0069] In some embodiments, the driving device includes a transistor and a capacitor, the driving device layer includes a first metal layer, a second metal layer and a third metal layer stacked on a substrate, the first metal layer includes a gate of the transistor, the second metal layer includes a capacitor, and the third metal layer includes a source and drain of the transistor.

[0070] Specifically, a gate insulating layer may be provided between the first metal layer and the second metal layer, and an interlayer insulating layer may be provided between the second metal layer and the third metal layer. The driver device layer may further include an active layer, which is provided between the substrate and the first metal layer and is used to form an active region of the transistor. By providing the metal layer, the insulating layer and the active layer in the driver device layer, a driver device in a pixel driving circuit and connecting lines between different driver devices may be formed.

[0071] In some embodiments, the conductive layer includes a signal transmission layer, which is used to form a signal transmission line and is connected to a driving device in a pixel driving circuit to provide a driving signal for the pixel driving circuit. Figure 3 The conductive layer 140 is a signal transmission layer.

[0072] In some embodiments, the signal transmission layer includes a fourth metal layer, and the fourth metal layer includes a first signal transmission line.

[0073] Specifically, the first signal transmission line is used to provide a driving signal for the pixel driving circuit. Exemplarily, the first signal transmission line may include a power signal line. When the fourth metal layer is reused as the first light shielding layer, the vertical projection of the first signal transmission line on the driving device layer may be set to cover at least part of the driving device, so that the first signal transmission line may at least partially block external light from reaching the driving device, thereby improving the optical leakage phenomenon of the driving device.

[0074] In some embodiments, the signal transmission layer further includes a fifth metal layer, and the fifth metal layer includes a second signal transmission line.

[0075] Specifically, in some display panels, the signal transmission layer also includes a fifth metal layer, including a second signal transmission line. The second signal transmission line and the first signal transmission line can transmit different drive signals. By setting the fourth metal layer and the fifth metal layer to form the signal transmission line, the arrangement of the signal transmission line can be simplified. When the fifth metal layer is reused as the first light-shielding layer, the vertical projection of the second signal transmission line on the driver device layer can be set to cover at least part of the driver device, so that the second signal transmission line can at least partially block the external light from reaching the driver device, thereby improving the optical leakage phenomenon of the driver device.

[0076] Continue to refer Figure 3 The display panel further includes a planarization layer 160 , which is disposed between the driving device layer 120 and the signal transmission layer.

[0077] Specifically, the planarization layer 160 is disposed on the side of the signal transmission layer close to the substrate 110, which can not only planarize the plane where the signal transmission layer is located, thereby improving the reliability of the signal line on the signal transmission layer, but also increase the vertical distance between the driver device layer 120 and the signal transmission layer, thereby improving the effect of the signal transmission layer and other film layers on the side away from the substrate 110 as a light shielding layer to block the external light S, further improving the optical leakage phenomenon of the driver device.

[0078] Continue to refer Figure 3 The display panel also includes a second insulating line 161, which is arranged between the conductive layer 140 and the pixel electrode layer 150, and is used to achieve insulation between the conductive layer 140 and the pixel electrode layer 150. At the same time, the surface of the conductive layer 140 can be flattened, which is beneficial to the setting of the pixel electrode layer 150.

[0079] In some embodiments, the first light-shielding layer 130 includes a gap, and the display panel also includes: a second light-shielding layer, the second light-shielding layer is arranged on the side of the driving device layer 120 away from the substrate 110, and the 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.

[0080] Specifically, when there is a gap on the first light shielding layer 130, the external light S is easily projected onto the driving device from the gap of the first light shielding layer 130. Exemplarily, when the conductive layer 140 or the pixel electrode layer 150 is reused as the first light shielding layer 130, there is a gap between different signal transmission lines or between different pixel electrodes 151. At this time, a second light shielding layer can be additionally provided on a layer of the first light shielding layer 130 away from the substrate 110. The second light shielding layer can cover at least part of the gap of the first light shielding layer 130, and is used to block the external light S at the gap of the first light shielding layer 130, thereby further blocking the external light S from projecting onto the driving device, and improving the optical leakage phenomenon of the driving device.

[0081] Figure 4 FIG. 1 is a schematic cross-sectional structure diagram of another display panel provided by an embodiment of the present invention. Figure 4 As shown, when the display panel includes a conductive layer 140 and a 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 .

[0082] Specifically, Figure 4As shown, 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 disposed at a 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 that the vertical projections of the pixel electrode layer 150 and the conductive layer 140 on the substrate 110 are at least partially non-overlapping, the conductive layer 140 and the pixel electrode layer 150 can cover each other's gaps, thereby shielding the external light S at the gap, and further blocking the external light S from being projected to the driving device, thereby improving the optical leakage phenomenon of the driving device.

[0083] It should be noted that, in other embodiments, the first light-shielding layer may be arranged on a layer of the second light-shielding layer away from the substrate, which is not limited here.

[0084] Figure 5 FIG. 1 is a schematic cross-sectional structure diagram of another display panel provided by an embodiment of the present invention. Figure 5 As shown, the display panel also includes:

[0085] The touch electrode layer 180 is disposed on a 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 .

[0086] Specifically, the touch electrode layer 180 may include touch electrode lines for realizing 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 reused 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 set 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 is incident on the display panel from the side of the touch electrode layer 180 away from the substrate 110, at the gap of the first light shielding layer 130, at least part of the external light S is blocked by the touch electrode layer 180; thereby, under the light shielding effect of the first light shielding layer 130, the external light S can be further blocked from being incident on the driving device. 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.

[0087] It should be noted that the touch structure formed by the touch electrode layer 180 can be any form of touch structure. Exemplarily, in some embodiments, the display panel further includes a light emitting device layer and an encapsulation layer 210 ( Figure 5The light emitting device layer is not shown in the figure), the light emitting device layer is arranged on a layer of the pixel electrode layer 150 away from the substrate 110, and the encapsulation layer 210 is arranged on a side of the light emitting device layer away from the substrate 110. The touch electrode layer 180 can be integrated in the display panel, for example, it can be arranged on the encapsulation layer 210 to form an incell touch structure. Alternatively, in some embodiments, the touch-related structure can be arranged on the display panel, for example Figure 5 As shown, the display panel may further include a touch substrate 220 disposed on a layer of the encapsulation layer 210 away from the light emitting device layer, and the touch electrode layer 180 may be disposed on the touch substrate 220 to form an oncell touch structure. This is not limited here.

[0088] Continue to refer Figure 5 When the first light shielding layer 130 reuses the pixel electrode layer 150 , the vertical projection of the touch 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 .

[0089] Specifically, the pixel electrode layer 150 may include at least two pixel electrodes 151, and a first gap 152 is provided between different pixel electrodes 151. When the pixel electrode layer 150 serves as the first light shielding layer 130, the touch electrode layer 180 may cover the first gap 152. At the first gap 152, at least part of the external light S is blocked by the touch 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 from being projected onto the driving device by the pixel electrode layer 150 and the touch electrode layer 180, thereby avoiding the influence of the external light S on the driving device in the pixel driving circuit, improving the optical leakage of the driving device in the pixel driving circuit, and improving the display effect of the display panel.

[0090] On the basis of the above technical solutions, Figure 6 A partial planar structural diagram of a display panel provided by an embodiment of the present invention. Figure 6 As shown, the touch electrode layer 180 includes a mesh structure.

[0091] Specifically, the shape of the touch electrode layer 180 can be set according to the requirements of touch control. By setting the touch electrode layer 180 to include a mesh structure, the light transmittance of the touch electrode layer 180 can be improved, thereby improving the light extraction rate of the display panel, and further improving the display effect of the display panel. Exemplarily, when forming the touch electrode layer 180, a whole metal layer can be formed first, and then the metal layer is patterned through a touch mask to form the touch electrode layer 180. Among them, the shape of the touch mask can be set according to the requirements of touch control.

[0092] Continue to refer Figure 5 and Figure 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 .

[0093] Specifically, when the touch electrode layer 180 is mesh-shaped, the width d1 of the touch electrode line of the touch electrode layer 180 is the line width of the mesh in the touch electrode layer 180. 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 the external light S at the first gap 152, avoiding the influence of the external light S on the driving device in the pixel driving circuit, improving the optical leakage phenomenon of the driving device in the pixel driving circuit, and improving the display effect of the display panel.

[0094] In some embodiments, the width of the touch electrode line of the touch electrode layer 180 is in the range of 4-6 microns, and / or the width of the first gap 152 is in the range of 3.5-5.5 microns. Exemplarily, the width d1 of the touch electrode line of the touch electrode layer 180 can be 4 microns, 5 microns, 6 microns, and the width d2 of the first gap 152 can be 3.5 microns, 4 microns, 4.5 microns, 5 microns, 5.5 microns. At this time, the size of the pixel electrode 151 can be increased to reduce the first gap 152 between different pixel electrodes 151.

[0095] In some embodiments, the vertical projection of the touch electrode line on the substrate overlaps with the vertical projection of the pixel electrodes on both sides of the first gap on the substrate, so that the touch electrode line can completely cover the first gap in the thickness direction of the display panel, thereby completely blocking external light at the first gap, 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.

[0096] In some embodiments, the pixel electrode layer includes a first indium tin oxide layer, a silver layer, and a second indium tin oxide layer stacked in sequence along the 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 adjacent pixel electrodes, a gap between the silver layers corresponding to adjacent pixel electrodes, and a gap between the second indium tin oxide layers corresponding to adjacent pixel electrodes.

[0097] Specifically, the silver layer is used to ensure the conductivity of the pixel electrode layer. The first indium tin oxide layer and the second indium tin oxide layer can protect the silver layer and reduce the oxidation probability of the silver layer. When increasing the size of the pixel electrode, the sizes of the first indium tin oxide layer, the silver layer and the second indium tin oxide layer can be increased simultaneously, so that the gap between adjacent first indium tin oxide layers, the gap between adjacent silver layers and the gap between adjacent second indium tin oxide layers are all the first gaps, which can not only reduce the gap between adjacent pixel electrodes to the first gap, but also form the first indium tin oxide layer, the silver layer and the second indium tin oxide layer through the same mask, reducing the production cost of the display panel, and can also increase the sizes of the first indium tin oxide layer, the silver layer and the second indium tin oxide layer separately, which is not limited here.

[0098] In some embodiments, the first gap is the gap between the silver layers corresponding to adjacent pixel electrodes. After the silver layer blocks the external light, the second light-shielding layer can cover the first gap to further block the external light entering through the gap between the silver layers, thereby completely blocking the external light from reaching the driving device, avoiding the influence of external light on the driving device in the pixel driving circuit, improving the phenomenon of light leakage of the driving device in the pixel driving circuit, and improving the display effect of the display panel.

[0099] Continue to refer Figure 5 and Figure 6 The touch electrode layer 180 includes a plurality of touch electrode lines, and a vertical projection of a midline N1 of at least one touch electrode line along the extension direction on the substrate 110 coincides with a vertical projection of a midline N2 of the first gap 152 along the extension direction on the substrate 110 .

[0100] Specifically, Figure 5 As shown, the touch electrode lines on the touch electrode layer 180 are symmetrically arranged about the center line of the first gap 152, so that the distances from the two edges of the touch electrode lines to the two edges of the first gap 152 are equal. Therefore, the touch electrode lines can block the external light S at the first gap 152 to the maximum extent, further improving the light leakage phenomenon of the driving device.

[0101] Figure 7 FIG. 1 is a schematic diagram of a partial structure of a touch electrode layer provided by an embodiment of the present invention. Figure 7 As shown, the touch electrode layer 180 is divided into at least two touch sensing areas 181 , and the vertical projection of the touch sensing area 181 on the pixel electrode layer 150 covers multiple pixel electrodes 151 ; the touch electrode layers 180 in different touch sensing areas 181 are insulated, and specifically, the touch electrode layers 180 in different touch sensing areas 181 are arranged at intervals.

[0102] Specifically, the touch sensing area 181 can be set according to the touch accuracy. When the touch accuracy requirement is relatively high, the area of ​​the touch sensing area 181 is relatively small. When the touch accuracy requirement is relatively low, the area of ​​the touch sensing area 181 is relatively large. When the touch sensing area 181 is specifically determined, the touch sensing area 181 can be determined according to a person's 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 touch control of the display panel.

[0103] Each touch sensing area 181 may 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 a first gap 152 is provided between adjacent pixel electrodes 151. At this time, the touch electrode layer 180 may be provided on the first gap 152 according to the touch control 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 at least covers a portion of the first gap 152, thereby shielding external light from being incident on the substrate while ensuring the touch control requirement of the touch electrode layer 180 in the touch sensing area 181, thereby reducing the influence of external light on the driving device in the pixel driving circuit, improving the optical leakage phenomenon of the driving device in the pixel driving circuit, and improving the display effect of the display panel.

[0104] Continue to refer Figure 7 There is a second gap 182 between the touch electrode layers 180 in different touch sensing areas 181 .

[0105] Specifically, the touch electrode layers 180 in different touch sensing areas 181 may have second gaps 182 to insulate the touch electrode layers 180 in different touch sensing areas 181 , thereby enabling independent control of the touch electrode layers 180 in different touch sensing areas 181 .

[0106] In some embodiments, the vertical projection of the second gap 182 on the substrate 110 at least partially overlaps with the vertical projection of the pixel electrode layer 150 on the substrate 110. When the touch electrode layer 180 blocks external light and external light enters the second gap 182, the pixel electrode layer 150 can block the external light at the second gap 182, thereby further blocking the external light from reaching the driving device and improving the optical leakage phenomenon of the driving device.

[0107] Figure 8 FIG. 1 is a schematic cross-sectional structure diagram of another display panel provided by an embodiment of the present invention. Figure 8As shown, the display panel further includes a pixel definition layer 190 , which is 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.

[0108] Specifically, the pixel definition layer 190 is used 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 with 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 the abnormality of the light-emitting device caused by the 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 setting the touch electrode layer 180, the width of the touch electrode layer 180 can be reduced, which is conducive to the touch setting of the touch electrode layer 180. Exemplarily, the first gap 152 between different pixel electrode layers 150 can just meet the distance requirements for the insulation of different pixel electrode layers 150.

[0109] In some embodiments, a vertical projection of the mesh openings of the mesh structure of the touch electrode layer 180 on the substrate 110 at least partially overlaps with a vertical projection of the opening on the substrate 110 .

[0110] In some embodiments, the display panel further includes a support column SPC, which is disposed on a side of the pixel definition layer 190 away from the substrate 110 ; the support column SPC is symmetrical about a center line N3 of the pixel definition layer 190 .

[0111] Specifically, the pixel definition layer 190 is used to define the position of the light-emitting device. The support column SPC is arranged on the pixel definition layer 190, and is used to support the film layer structure (specifically, it can be a mask) on the side of the pixel definition layer 190 away from the substrate 110. The damage to the light-emitting device layer caused by the film layer structure on the side of the pixel definition layer 190 away from the substrate 110 can be reduced, which is beneficial to improve the life of the display panel. Exemplarily, the pixel definition layer 190 and the support column SPC can be an integral structure. In the manufacturing process of the display panel, it can be prepared by the same film layer, for example, the pixel definition layer 190 and the support column SPC can be prepared simultaneously by a half-tone mask process, which is not limited here.

[0112] Continue to refer Figure 8The display panel also includes a light-emitting device layer 200, which is arranged between the pixel electrode layer 150 and the touch electrode layer 180. The vertical projection of the light-emitting device layer 200 on the substrate 110 overlaps with the vertical projection of the pixel electrode layer 150 on the substrate 110, and the light-emitting device layer 200 is connected to the pixel electrode layer 150.

[0113] Specifically, the light-emitting device layer 200 may include a light-emitting functional layer. The light-emitting device layer 200 is disposed on the pixel electrode 151. At this time, the pixel electrode 151 can be used as an anode of the light-emitting device, and the light-emitting device layer 200 of 151 forms a light-emitting device. Different light-emitting device layers 200 can have light-emitting layers with different light-emitting colors to form light-emitting devices with 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 to achieve self-luminescence of the display panel. When the touch electrode layer 180 is arranged relative to the second gap 152 between different pixel electrodes 151, in the thickness direction Z of the display panel, the relative position relationship between the touch electrode layer 180 and the light-emitting device layer 200 has an angle with the thickness direction Z of the display panel. When the light emitting device layer 200 emits light by itself, the light A emitted by the light emitting device layer 200 forms an angle with the surface of the touch electrode layer 180 when it hits the touch electrode layer 180. 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 angle. At this time, the pixel electrode layer 150 can block the light A reflected by the touch electrode layer 180 from reaching 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 optical leakage and performance unevenness of the driving device in the pixel driving circuit, and improving the display effect of the display panel.

[0114] Exemplarily, along the direction from the pixel electrode layer 150 to the touch electrode layer 180, the light-emitting device layer 200 may 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 stacked in sequence. When the light-emitting device layer 200 is used to form light-emitting devices of different colors, the light-emitting layers in the light-emitting device layer 200 at different openings may have different materials, so that the light-emitting devices formed by different light-emitting device layers 200 can emit light of different colors. Exemplarily, the light-emitting devices formed by different light-emitting device layers 200 can emit red, green, and blue light, respectively, that is, the display panel may include a light-emitting device that emits red, a light-emitting device that emits green, and a light-emitting device that emits blue.

[0115] It should be noted that a cathode layer is also provided on the side of the light-emitting device layer 200 away from the pixel electrode layer 150. The cathode layer overlaps with the light-emitting device layer 200 at least in the vertical direction, so that the cathode layer serves as the cathode of the light-emitting device, and is used to provide a driving signal to the light-emitting device layer 200, so that the light-emitting device layer 200 emits light. Optionally, the cathode layer can be a whole film layer, in which case different light-emitting devices share the cathode layer, thereby realizing a common cathode connection of different light-emitting devices. Alternatively, the cathode layer can include a plurality of insulated cathode blocks, and different light-emitting devices correspond 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.

[0116] In some embodiments, the light-emitting device layer includes at least two light-emitting devices of different light-emitting colors, and the sizes of pixel electrodes connected to the light-emitting devices of different light-emitting colors are different.

[0117] Specifically, the materials of light-emitting devices of different luminous colors are different. After the light-emitting devices are formed in the light-emitting device layer, the light-emitting devices of different luminous colors have different equivalent capacitances. By setting the sizes of the pixel electrodes corresponding to the light-emitting devices of different luminous colors to be different, the area of ​​the capacitor plate of the pixel electrodes in the light-emitting devices of different luminous colors as the equivalent capacitance can be adjusted, so that the equivalent capacitance of the light-emitting devices of different luminous colors can be adjusted, so that the equivalent capacitance of the light-emitting devices of different luminous colors can be equal, thereby improving the color deviation phenomenon caused by the different equivalent capacitances of the light-emitting devices of different luminous colors.

[0118] In some embodiments, the light-emitting device layer includes 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, 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.

[0119] Specifically, 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 connected to the green light-emitting device can be set to be relatively small, thereby reducing the equivalent capacitance of the green light-emitting device and improving the display panel's ghosting and purple display color phenomena.

[0120] Continue to refer Figure 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 used to encapsulate the light emitting device layer 200 .

[0121] Specifically, the material of the light-emitting device layer 200 can be an organic material. When forming the light-emitting device layer 200, an evaporation process can be used. 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 prevent external water and oxygen from invading the light-emitting device layer 200, ensure the effectiveness of the light-emitting device layer 200, and improve the life of the display panel. At the same time, 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, avoiding the need to additionally set up a substrate for the touch electrode layer 180, which is beneficial to reducing the manufacturing process of the display panel and at the same time is beneficial to reducing the thickness of the display panel. Exemplarily, the encapsulation layer 210 may include a first inorganic encapsulation layer, an organic encapsulation layer, and a second inorganic encapsulation layer stacked in sequence along the thickness direction Z of the substrate.

[0122] Based on the above technical solutions, the touch electrode layer includes at least one metal layer, and the vertical projection of the at least one metal layer on the substrate at least covers a portion of the vertical projection of the first gap on the substrate.

[0123] Specifically, when the touch electrode layer includes a metal layer, the touch electrode layer can form a self-capacitive touch electrode. At this time, the pattern of the metal layer can be set to cover the first gap as much as possible on the basis of meeting the touch requirements, so that the external light or self-luminous light can be blocked from being projected onto the driver device on the basis of meeting the touch requirements, improving the light leakage and performance unevenness of the driver device in the pixel driving circuit, and improving the display effect of the display panel. When the touch electrode layer includes at least two metal layers, the touch electrode layer can form a mutual capacitance touch electrode. At this time, the pattern of at least two metal layers can be set to cover the first gap as much as possible on the basis of meeting the touch requirements, so that the external light or self-luminous light can be blocked from being projected onto the driver device on the basis of meeting the touch requirements, improving the light leakage and performance unevenness of the driver device in the pixel driving circuit, and improving the display effect of the display panel.

[0124] An embodiment of the present invention further provides a display device. Fig. 9 FIG. 1 is a schematic diagram of a display device provided by an embodiment of the present invention. Fig. 9 As shown, the display device includes the display panel provided by any embodiment of the present invention.

[0125] Specifically, the display panel 11 is a display panel provided by any embodiment of the present invention. When the display device 10 includes the display panel provided by any embodiment of the present invention, it has the same beneficial effects as the display panel provided by any embodiment of the present invention, which will not be described in detail here. The display device 10 can be any product or component with a display function, such as a mobile phone, a tablet computer, a television, a monitor, a laptop computer, a digital photo frame, etc.

[0126] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A display panel, characterized in that: include: substrate; A driving device layer, disposed on the substrate, the driving device layer comprising a driving device; The first light shielding layer is arranged on a side of the driving device layer away from the substrate, and a vertical projection of the first light shielding layer on the substrate covers at least a portion of a vertical projection of the driving device on the substrate.

2. The display panel according to claim 1, characterized in that: Also includes: A conductive layer, disposed on a side of the driving device layer away from the substrate, the conductive layer comprising a signal transmission line; A pixel electrode layer, disposed on a side of the conductive layer away from the substrate, the pixel electrode layer comprising a pixel electrode; The conductive layer or the pixel electrode layer is reused as the first light shielding layer, or the first light shielding layer is arranged between the conductive layer and the pixel electrode layer; Preferably, the driving device is used to form a pixel driving circuit; Preferably, the driving device includes a transistor and a capacitor, the driving device layer 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 a plate of the capacitor, and the third metal layer includes a source and drain of the transistor; Preferably, the conductive layer comprises a signal transmission layer; Preferably, the signal transmission layer includes a fourth metal layer, and the fourth metal layer includes a first signal transmission line; Preferably, the signal transmission layer further includes a fifth metal layer, and the fifth metal layer includes a second signal transmission line.

3. The display panel according to claim 2, characterized in that: The device further comprises a planarization layer, wherein the planarization layer is arranged between the driving device layer and the signal transmission layer.

4. The display panel according to any one of claims 1 to 3, characterized in that: The first light shielding layer includes a gap, and the display panel further includes: A second light shielding layer, wherein the second light shielding layer is disposed 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 a portion of a vertical projection of the gap on the substrate.

5. The display panel according to claim 4, characterized in that: When the display panel includes 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.

6. The display panel according to claim 4, characterized in that: Also includes: The touch electrode layer is arranged on a side of the first light shielding layer away from the substrate, and the touch electrode layer is reused as the second light shielding layer.

7. The display panel according to claim 6, characterized in that: When the first light shielding layer reuses the pixel electrode layer, the vertical projection of the touch electrode layer on the substrate covers the vertical projection of the first gap between adjacent pixel electrodes on the substrate.

8. The display panel according to claim 7, characterized in that: The touch electrode layer includes a mesh structure; Preferably, the width of the touch electrode line of the touch electrode layer is greater than or equal to the width of the first gap; Preferably, the width of the touch electrode line of the touch electrode layer is in the range of 4-6 micrometers, and / or the width of the first gap is in the range of 3.5-5.5 micrometers; Preferably, a vertical projection of the touch electrode line on the substrate overlaps with a vertical projection of the pixel electrodes on both sides of the first gap on the substrate.

9. The display panel according to claim 8, characterized in that: The pixel electrode layer includes a first indium tin oxide layer, a silver layer, and a second indium tin oxide layer stacked in sequence along the 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 adjacent pixel electrodes, a gap between the silver layers corresponding to adjacent pixel electrodes, and a gap between the second indium tin oxide layers corresponding to adjacent pixel electrodes; Preferably, the first gap is a gap between the silver layers corresponding to adjacent pixel electrodes.

10. The display panel according to claim 8, characterized in that: The touch electrode layer includes a plurality of touch electrode lines, and a vertical projection of a midline of at least one of the touch electrode lines along an extension direction on the substrate coincides with a vertical projection of a midline of the first gap along the extension direction on the substrate.

11. The display panel according to claim 7, characterized in that: 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 the pixel electrodes; the touch electrode layers in different touch sensing areas are insulated.

12. The display panel according to claim 11, characterized in that: There is a second gap between the touch electrode layers in different touch sensing areas; Preferably, 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.

13. The display panel according to claim 8, characterized in that: It also includes a pixel definition layer, which is disposed between the pixel electrode layer and the touch electrode layer; the pixel definition layer has an opening, and a vertical projection of the pixel electrode layer on the pixel definition layer covers the opening; Preferably, a vertical projection of the mesh openings 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.

14. The display panel according to claim 13, characterized in that: It also includes a support column located at a side of the pixel definition layer away from the substrate, and the support column is symmetrical about the center line of the pixel definition layer.

15. The display panel according to claim 7, characterized in that: The touch electrode layer includes at least one metal layer, and a vertical projection of the at least one metal layer on the substrate at least covers a portion of a vertical projection of the first gap on the substrate.

16. The display panel according to claim 2, characterized in that: It also includes a light-emitting device layer, which is arranged between the pixel electrode layer and the touch electrode layer. The vertical projection of the light-emitting device layer on the substrate overlaps with 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 according to claim 16, characterized in that: The light emitting device layer includes at least two light emitting devices of different light emitting colors, and the sizes of pixel electrodes connected to the light emitting devices of different light emitting colors are different.

18. The display panel according to claim 17, characterized in that: The light-emitting device layer includes 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, 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.

19. The display panel according to claim 16, characterized in that: It also includes an encapsulation layer, which is disposed between the light-emitting device layer and the touch electrode layer, and is used to encapsulate the light-emitting device layer; Preferably, the encapsulation layer includes a first inorganic encapsulation layer, an organic encapsulation layer, and a second inorganic encapsulation layer which are sequentially stacked along a thickness direction of the substrate.

20. A display device, characterized in that: A display panel comprising any one of claims 1-19.

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