Display panel and display device

Abstract

The utility model discloses a display panel and a display device. The display panel includes: a light emitting layer including a plurality of light emitting pixels; the driving array layer is arranged below the light-emitting layer, the driving array layer is electrically connected with the light-emitting pixels, and the driving array layer comprises a plurality of pixel circuit units and signal lines connected to the pixel circuit units; the shielding layer comprises a first shielding part, the first shielding part is arranged on the side, away from the light-emitting layer, of at least part of the signal lines, and the first shielding part is arranged on the side, away from the light-emitting layer, of the part of the signal lines, so that when the display panel is assembled into the display device, the first shielding part can separate the sensor assembly and at least part of the signal lines; the first shielding part reduces the interference of electrical noise generated on the signal line on the sensor assembly so as to improve the sampling accuracy of the sensor assembly.

Description

Technical Field

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

[0002] A color temperature sensor or a photosensor is arranged under the screen of the electronic device, which can collect ambient light signals and then transmit the ambient light signals to the control system to realize the automatic brightness and automatic color temperature functions of the device.

[0003] As users demand more "eye protection" effects from devices, the PWM (Pulse-width modulation) dimming frequency of device screens has gradually increased, which has resulted in shorter and shorter sampling times for sensor components, and more and more obvious interference from high-frequency signals on sensors, reducing sampling accuracy. Utility Model Content

[0004] The embodiments of the present application provide a display panel and a display device, which can solve the problem in the prior art that the driving array layer of the display panel interferes with the under-screen sensor component of the device, resulting in reduced sampling accuracy of the under-screen sensor component of the device.

[0005] In a first aspect, an embodiment of the present application provides a display panel, comprising: a light-emitting layer, comprising a plurality of light-emitting pixels; a driving array layer, disposed below the light-emitting layer, the driving array layer and the light-emitting pixels being electrically connected, the driving array layer comprising a plurality of pixel circuit units and signal lines connected to the pixel circuit units; a shielding layer comprising a first shielding portion, the first shielding portion being disposed on a side of at least a portion of the signal lines facing away from the light-emitting layer.

[0006] In a second aspect, an embodiment of the present application provides a display device, which includes a sensor component and a display panel of the above-mentioned first direction embodiment, wherein a shielding layer is disposed between the sensor component and the driving array layer.

[0007] Thus, in the display panel provided in the embodiment of the present application, the display panel includes a light-emitting layer, a driving array layer and a shielding layer, the light-emitting layer includes a plurality of light-emitting pixels, the driving array layer is arranged below the light-emitting layer, the driving array layer and the light-emitting pixels are electrically connected so that the driving array layer can control the light-emitting pixels to emit light, the driving array layer includes a plurality of pixel circuit units and signal lines connected to the pixel circuit units, the shielding layer includes a first shielding portion, the first shielding portion is arranged on a side of at least part of the signal lines away from the light-emitting layer, so that when the display panel is assembled into a display device, the first shielding portion can separate the sensor component and at least part of the signal line, so as to reduce the interference of the signal line on the sensor component of the device and improve the sampling accuracy of the sensor component.

[0008] Therefore, in an embodiment of the present application, a first shielding portion is provided on the side of a portion of the signal line away from the light-emitting layer, so that when the display panel is assembled into a display device, the first shielding portion can separate the sensor component and at least a portion of the signal line. The first shielding portion reduces the interference of the electrical noise generated on the signal line on the sensor component, thereby improving the sampling accuracy of the sensor component. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] In order to more clearly illustrate the technical solution of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0010] Figure 1 A partial cross-sectional structural diagram of a display panel according to some embodiments of the present application;

[0011] Figure 2 A schematic diagram of the structure of a display panel according to some embodiments of the present application;

[0012] Figure 3 Schematic diagrams of the structures of display panels of other embodiments of the present application;

[0013] Figure 4 for Figure 2 A schematic diagram of the enlarged structure at A in the middle;

[0014] Figure 5 for Figure 3 A schematic diagram of the enlarged structure at B in the middle;

[0015] Figure 6 A signal noise line graph of a sensor assembly in the prior art;

[0016] Figure 7 A schematic diagram of a pixel circuit unit of a display panel according to some embodiments of the present application;

[0017] Figure 8 A schematic diagram of the structure of a thin film transistor of a display panel in some embodiments of the present application;

[0018] Fig. 9 A top view of a shielding layer of a display panel in some embodiments of the present application;

[0019] Fig.10 A schematic diagram of the structure of a shielding layer of a display panel in some embodiments of the present application;

[0020] Fig.11 Schematic diagram of the structure of the shielding layer of the display panel of some other embodiments of the present application;

[0021] Fig.12A top view of a shielding layer of a display panel according to some other embodiments of the present application;

[0022] Fig.13 It is a signal noise line graph of the sensor component in the embodiment of the present application.

[0023] Description of Figure Numbers:

[0024] 100, display panel; 101, first area; 102, second area;

[0025] 120, driving array layer; 121, pixel circuit unit; 122, signal line; 1211, thin film transistor; 1221, first signal line; 1222, second signal line;

[0026] 130, shielding layer; 131, first shielding portion; 132, second shielding portion; 133, protruding portion; 134, recessed portion; 135, hollow portion; 136, side wall; 137, bottom wall;

[0027] 141, gate electrode; 142, source electrode; 143, drain electrode; 144, active layer;

[0028] 150. light-emitting layer; 151. light-emitting pixel. DETAILED DESCRIPTION

[0029] The embodiments of the present application will be described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and should not be construed as limitations on the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present application.

[0030] The term "first" or "second" in the specification and claims of this application may include one or more of the features explicitly or implicitly. In the description of this application, unless otherwise specified, "plurality" means two or more. In addition, "and / or" in the specification and claims means at least one of the connected objects, and the character " / " generally means that the objects connected before and after are in an "or" relationship.

[0031] In the description of the present application, it should be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "middle", "back", "left", "right", "clockwise", "counterclockwise", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0032] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0033] See also Figures 1 to 6 , Figure 1 A partial cross-sectional structural diagram of a display panel according to some embodiments of the present application; Figure 2 A schematic diagram of the structure of a display panel according to some embodiments of the present application; Figure 3 Schematic diagrams of the structures of display panels of other embodiments of the present application; Figure 4 for Figure 2 A schematic diagram of the enlarged structure at A in the middle; Figure 5 for Figure 3 A schematic diagram of the enlarged structure at B in the middle; Figure 6 It is a signal noise line graph of the sensor component in the prior art.

[0034] First, as Figures 1 to 5 As shown, an embodiment of the present application provides a display panel 100, which includes a light-emitting layer, a driving array layer 120 and a shielding layer 130. The light-emitting layer 150 includes a plurality of light-emitting pixels 151. The driving array layer 120 is arranged below the light-emitting layer 150, and the driving array layer and the light-emitting pixels 151 are electrically connected. The driving array layer 120 includes a plurality of pixel circuit units 121 and signal lines 122 connected to the pixel circuit units 121; the shielding layer 130 includes a first shielding portion 131, and the first shielding portion 131 is arranged on a side of at least a portion of the signal line 122 away from the light-emitting layer 150.

[0035] In the display panel 100 provided in the embodiment of the present application, the display panel 100 includes a light-emitting layer 150, a driving array layer 120 and a shielding layer 130, the light-emitting layer 150 includes a plurality of light-emitting pixels 151, the driving array layer 120 is arranged below the light-emitting layer 150, the driving array layer 120 and the light-emitting pixels 151 are electrically connected, so that the driving array layer 120 can control the light-emitting pixels 151 to emit light, the driving array layer 120 includes a plurality of pixel circuit units 121 and signal lines 122 connected to the pixel circuit units 121, and the shielding layer 130 includes a first shielding portion 131, and the first shielding portion 131 is arranged on a side of at least part of the signal lines 122 away from the light-emitting layer 150, so that when the display panel 100 is assembled into a display device, the first shielding portion 131 can separate the sensor component and at least part of the signal lines 122, so as to reduce the interference of the signal lines 122 on the sensor component and improve the sampling accuracy of the sensor component. By setting the first shielding portion 131 on the side of part of the signal line 122 away from the light-emitting layer 150, when the display panel 100 is assembled into a display device, the first shielding portion 131 can separate the sensor component and at least part of the signal line 122. The first shielding portion 131 reduces the interference of the electrical noise generated on the signal line 122 on the sensor component, so as to improve the sampling accuracy of the sensor component.

[0036] During use, the display panel 100 usually needs to be assembled with the housing, sensor assembly, power assembly and control assembly to form a display device. The display device may be an AMOLED (Active-matrix organic light emitting diode) display device. The sensor assembly is a color temperature sensor and / or a light sensitive sensor of the device. The sensor assembly is disposed on one side of the drive array layer 120. The sensor assembly is used to collect ambient light signals to adjust the brightness and color temperature of the device.

[0037] The driving array layer 120 is used to control the light-emitting pixels 151 of the light-emitting layer 150 to emit light, and the driving array layer 120 includes a plurality of pixel circuit units 121 and signal lines 122 connected to the pixel circuit units 121. The display driving chip generates a signal to the light-emitting signal generating circuit, and the light-emitting signal generating circuit generates a light-emitting signal to control the pixel circuit unit 121 to control the pixel unit to emit light.

[0038] The signal line 122 extends along the first direction X, and electrically connects the gates of the light emission control transistors together row by row, every two rows, or every three rows.

[0039] The display device adopts PWM dimming mode. In order to improve the "eye protection effect" of the display device and reduce the problems of overlap and image flicker, the PWM dimming frequency is gradually increased. This causes some signal lines 122 to increase their radiation values ​​to the outside world as the frequency of the signal transmitted increases, causing the sensor components to be interfered with and the sampling accuracy of the sensor components to be reduced.

[0040] like Figure 6 As shown in the figure, in a dark room environment, the black tape blocks the photosensitive channel of the sensor component, and the strong electrical signal coupling interference of the screen itself causes periodic background noise in the sensor background signal, affecting the accuracy of sensor sampling.

[0041] In order to alleviate the above problems, in the embodiment of the present application, a shielding layer 130 is provided on the side of the driving array layer 120 away from the light-emitting layer 150. Specifically, the shielding layer 130 should be located between at least part of the signal line 122 and the sensor assembly after the display panel 100 is assembled into a display device. The shielding layer 130 can be a metal or a metal oxide. The shielding layer 130 can be prepared by a patterning process.

[0042] Optionally, the shielding layer 130 is made of a light-transmitting metal material to reduce the effect of the shielding layer 130 on the brightness of the display panel 100 . Exemplarily, the shielding layer 130 is made of indium tin oxide.

[0043] Optionally, the shielding layer 130 may also be made of opaque metal or metal oxide, such as molybdenum or titanium or aluminum oxide or tin oxide.

[0044] The shielding layer 130 includes a first shielding portion 131 disposed between the signal line 122 and the sensor assembly. The first shielding portion 131 is used to reduce the influence of the high-frequency signal in the signal line 122 on the sensor assembly. Exemplarily, the high-frequency signal refers to a signal with an operating frequency higher than 120 Hz.

[0045] In the driving array in the embodiment of the present application, Figure 2 and Figure 3 As shown, the pixel circuit unit 121 can be driven on both sides or on one side. In the driving array of the double-sided drive, the signal lines 122 on both sides drive one pixel circuit unit 121 at the same time; in the driving array of the single-sided drive, each pixel circuit unit 121 is driven in sequence from one end of the signal line 122 to the other end.

[0046] In some embodiments, Figures 1 to 5 As shown, the signal line 122 includes a first signal line 1221 extending along a first direction X and a second signal line 1222 extending along a second direction Y. The first direction X and the second direction Y intersect. The first shielding portion 131 is disposed on a side of the first signal line 1221 away from the light emitting layer 150 .

[0047] In these embodiments, the signal line 122 includes a first signal line 1221 extending along the first direction X and a second signal line 1222 extending along the second direction Y. The first signal line 1221 is a scan line connected to the gate 141 of the pixel driving circuit, and the second signal line 1222 is a data line connected to the pixel driving circuit. The operating frequency of the second signal line 1222 is lower than the operating frequency of the first signal line 1221, that is, when the display panel 100 is working normally, the high-frequency signal often appears in the part of the first signal line 1221. Therefore, the first shielding part 131 is arranged on the side of the first signal line 1221 away from the light-emitting layer 150, and the first signal line 1221 and the sensor assembly are separated by the first shielding part 131. The first shielding part 131 can be used to shield the interference of the first signal line 1221 on the sensor assembly, and the first shielding part 131 will not affect the transmittance of the display panel 100 and the display effect of the display panel 100 due to the excessive area of ​​the first shielding part 131, and the processing cost of the first shielding part 131 is reduced.

[0048] Exemplarily, the display panel 100 includes a plurality of gate lines and a plurality of data lines, and the gate lines and the data lines are cross-arranged to define a plurality of pixel areas, and each pixel area is provided with a pixel unit. Each gate line is a first signal line 1221, and the first signal line 1221 extends along a first direction X, and each data line is a second signal line 1222, and the second signal line 1222 extends along a second direction Y. When the display panel 100 is driven to display, a gate scanning signal can be written to the gate line row by row according to the picture to be displayed, and a data voltage signal can be written to each data line at the same time, so that the pixel units in the display panel 100 are lit row by row.

[0049] Usually, the operating frequency of the data line, that is, the second signal line 1222 , is lower than that of the first signal line 1221 . Therefore, providing the first shielding portion 131 only on one side of the first signal line 1221 is a choice that balances the light transmittance of the display panel 100 and the shielding effect of the first shielding portion 131 .

[0050] In some embodiments, Figures 1 to 5 As shown, the first shielding portion 131 is disposed on a side of a portion of the first signal line 1221 having an operating frequency greater than or equal to 120 Hz that is away from the light emitting layer 150 .

[0051] In these embodiments, the first signal line 1221 with an operating frequency greater than or equal to 120 Hz interferes with the sensor component more significantly. Therefore, the first shielding portion 131 is arranged on the side of the first signal line 1221 with an operating frequency greater than or equal to 120 Hz away from the light-emitting layer 150. The first shielding portion 131 can effectively reduce the interference of the first signal line 1221 on the sensor component, reduce the size of the first shielding portion 131, and reduce the influence of the first shielding portion 131 on the light transmittance of the display panel 100.

[0052] It should be clear that when the operating frequency of a portion of the second signal lines 1222 exceeds 120 Hz, the first shielding portion 131 may also be provided between the portion of the second signal lines 1222 and the sensor assembly.

[0053] See also Figure 7 , Figure 7 Schematic diagram of a pixel circuit unit of a display panel according to some embodiments of the present application.

[0054] In some embodiments, Figure 2 , Figure 4 and Figure 7 As shown, the pixel circuit unit 121 further includes a thin film transistor 1211 , and the shielding layer 130 further includes a second shielding portion 132 . The second shielding portion 132 is disposed on a side of at least a portion of the active layer 144 of the thin film transistor 1211 away from the gate 141 .

[0055] In these embodiments, the shielding layer 130 includes a second shielding portion 132, which is disposed on a side of the active layer 144 of at least part of the thin film transistor 1211 away from the gate 141 to reduce interference of the thin film transistor 1211 on the sensor component and improve the sampling accuracy of the sensor component.

[0056] The signal line 122 transmits a switching signal to the thin film transistor 1211. The background noise of the high-frequency switching thin film transistor 1211 itself will interfere with the sensor component. Therefore, in the embodiment of the present application, a second shielding part 132 is provided to shield the interference of the thin film transistor 1211 to the sensor component.

[0057] The thin film transistor 1211 includes a source electrode 142 , a drain electrode 143 , a gate electrode 141 , an intermediate dielectric layer, a gate insulating layer, a substrate and an active layer 144 . The gate electrode 141 and the second shielding portion 132 are respectively disposed on two sides of the active layer 144 .

[0058] The pixel circuit unit 121 includes a plurality of thin film transistors 1211 . The pixel circuit may be a 5T1C pixel circuit, a 7T1C pixel circuit, an 8T1C pixel circuit, or the like.

[0059] Optionally, the first shielding portion 131 and the second shielding portion 132 are provided in the same layer, so as to simplify the preparation process of the shielding layer 130 .

[0060] In some embodiments, Figure 2 , Figure 4 and Figure 7 As shown, the driving array layer 120 further includes a power supply voltage signal line, and at least one of the first shielding portion 131 and the second shielding portion 132 is connected to the power supply voltage signal line, or the first shielding portion 131 and the second shielding portion 132 are connected to each other and to the power supply voltage signal line.

[0061] In these embodiments, the driving array layer 120 also includes a power supply voltage signal line, and at least one of the first shielding portion 131 and the second shielding portion 132 is connected to the power supply voltage signal line, or the first shielding portion 131 and the second shielding portion 132 are connected to each other and to the power supply voltage signal line to increase the total cross-sectional area of ​​the wire and improve the impedance of the display panel 100.

[0062] The signal line of the driving array layer 120 may be a power supply voltage signal line, which may be an ELVDD high level signal line for providing a working voltage for driving the diode to emit light, or an ELVSS common connection voltage line for providing a common connection voltage, or a Vdata data signal line for providing a data voltage. The power supply is not limited to the above example power supply, and a power supply with a constant voltage is preferred.

[0063] The first shielding part 131 and the second shielding part 132 are connected to the power supply voltage signal line, including the first shielding part 131 and the second shielding part 132 are respectively connected to the power supply voltage signal line, or the first shielding part 131 and the second shielding part 132 are connected to each other, and then the first shielding part 131 or the second shielding part 132 is connected to the power supply voltage signal line.

[0064] See also Figure 8 , Figure 8 Schematic diagram of the structure of the thin film transistor of the display panel of some embodiments of the present application

[0065] In some embodiments, Figure 1 , Figure 2 , Figure 4 , Figure 7 and Figure 8 As shown, the pixel circuit unit 121 includes a light emitting control transistor, the signal line 122 includes a light emitting control signal line EM connected to the light emitting control transistor, the first shielding portion 131 is located on the side of the light emitting control signal line EM away from the light emitting layer 150, and the second shielding portion 132 is located on the side of the active layer of the light emitting control transistor away from the gate.

[0066] In these embodiments, the pixel circuit unit 121 includes a light-emitting control transistor, and the signal line 122 includes a light-emitting control signal line EM connected to the light-emitting control transistor. When the display panel 100 is working, the frequency of the light-emitting control transistor and the light-emitting control signal line EM is relatively high, and the interference effect of the light-emitting control transistor and the light-emitting control signal line EM on the sensor component is more obvious. Therefore, the first shielding part 131 is used to separate the light-emitting control signal line EM and the sensor component, and the second shielding part 132 is used to separate the light-emitting control transistor and the sensor component, so that the first shielding part 131 can shield the interference of the light-emitting control signal line on the sensor component, and the second shielding part 132 can shield the interference of the light-emitting control transistor on the sensor component, so as to improve the shielding effect of the shielding layer 130 on the sensor component.

[0067] In the display panel 100, the light emitting control signal in the light emitting control signal line EM is turned on in sequence at a specific frequency and timing, and the image data is converted into a first voltage and stored in the capacitor. The thin film transistor 1211 in the pixel circuit unit 121 includes a first light emitting control transistor T5 and a second light emitting control transistor T6. Under the control of the light emitting control signal, the first light emitting control transistor T5 and the second light emitting control transistor T6 are jointly configured to apply the first voltage to the driving transistor, and apply the driving current passing through the driving transistor to the light emitting pixel.

[0068] The first electrode of the first light emitting control transistor T5 is coupled to the high-level signal line ELVDD to receive the first voltage from the high-level signal line ELVDD; the second electrode of the first light emitting control transistor T5 is coupled to the first electrode of the driving transistor; the gate 141 of the first light emitting control transistor T5 is coupled to the light emitting control signal line EM, and is configured to control the on-off between the high-level signal line ELVDD and the first electrode of the driving transistor according to the light emitting control signal from the light emitting control signal line EM, thereby controlling whether the first voltage from the high-level signal line ELVDD is provided to the first electrode of the driving transistor.

[0069] The first electrode of the second light emitting control transistor T6 is coupled to the second electrode of the driving transistor; the second electrode of the second light emitting control transistor T6 is coupled to the first electrode of the light emitting pixel; the gate 141 of the second light emitting control transistor T6 is coupled to the light emitting control signal line EM, and is configured to control the on-off between the second electrode of the driving transistor and the first electrode of the light emitting pixel according to the light emitting control signal from the light emitting control signal line EM, thereby controlling whether the current generated by the driving transistor is provided to the light emitting pixel.

[0070] It should be noted that the source 142 and the drain 143 of the thin film transistor 1211 used in the embodiment of the present application may be symmetrical in structure, so the source 142 and the drain 143 may have no structural difference. In the embodiment of the present application, in order to distinguish the two electrodes of the thin film transistor 1211 except the gate 141, one of the electrodes is directly described as the first electrode and the other electrode is directly described as the second electrode.

[0071] In some embodiments, Figure 2 , Figure 4 , Figure 7 and Figure 8 As shown, the pixel circuit unit 121 also includes an anode initialization transistor T7 and a bias transistor T8, the signal line 122 includes a reset signal line Vscan1, the reset signal line Vscan1 is connected to the gate 141 of the anode initialization transistor T7, and / or the gate 141 of the bias transistor T8, the first shielding portion 131 is located on the side of the reset signal line Vscan1 away from the light-emitting layer 150, and / or the second shielding portion 132 is located on the side of the active layer 144 of at least one of the anode initialization transistor T7 and the bias transistor T8 away from the gate.

[0072] In these embodiments, the pixel circuit unit 121 further includes an anode initialization transistor T7 and a bias transistor T8, the signal line 122 includes a reset signal line Vscan1, the reset signal line Vscan1 is connected to the gate 141 of the anode initialization transistor T7, and / or the gate 141 of the bias transistor T8, when the display panel 100 is working, the frequency of the anode initialization transistor T7, the bias transistor T8 and the reset signal line Vscan1 is high, then the interference effect of the anode initialization transistor T7, the bias transistor T8 and the reset signal line Vscan1 on the sensor component is more obvious,

[0073] The thin film transistor 1211 of the pixel circuit unit 121 also includes an anode initialization transistor T7 and a bias transistor T8, which are separated between the reset signal line Vscan1 and the sensor component by a first shielding portion 131 to reduce the interference of the reset signal line Vscan1 on the sensor component, and / or, separated between the active layer 144 of at least one of the anode initialization transistor T7 and the bias transistor T8 and the sensor component by a second shielding portion 132 to reduce the interference of at least one of the anode initialization transistor T7 and the bias transistor T8 on the sensor component, so as to improve the shielding effect of the shielding layer 130 on the sensor component.

[0074] A first electrode of the anode initialization transistor T7 is coupled to the anode of the light-emitting pixel, a second electrode thereof is coupled to the compensation signal line Vint2 , and a reset signal line Vscan1 is coupled to the gate 141 of the anode initialization transistor T7 .

[0075] A first electrode of the bias transistor T8 is coupled to the first stage of the driving transistor, a second electrode thereof is coupled to the compensation signal line Vint3 , and a reset signal line Vscan1 is coupled to the gate 141 of the bias transistor T8 .

[0076] See also Figures 9 to 11 , Fig. 9 A top view of a shielding layer of a display panel in some embodiments of the present application; Fig.10 A schematic diagram of the structure of a shielding layer of a display panel in some embodiments of the present application; Fig.11 Schematic diagram of the structure of the shielding layer of the display panel of other embodiments of the present application.

[0077] In some embodiments, Figures 9 to 11 As shown, the shielding layer 130 includes a protruding portion 133 facing the driving array layer 120 and a recessed portion 134 facing away from the driving array layer 120 .

[0078] In these embodiments, the shielding layer 130 includes a protruding portion 133 facing the driving array layer 120 and a recessed portion 134 away from the driving array layer 120, so that the shielding layer 130 is arranged in a pleated shape as a whole, so as to increase the surface area of ​​the shielding layer 130, thereby improving the shielding effect of the shielding layer 130 and improving the sampling accuracy of the sensor assembly.

[0079] Optionally, the protrusions 133 and the recesses 134 of the shielding layer 130 are evenly arranged, so that the shielding effect of all parts of the shielding layer 130 is uniform.

[0080] Optionally, the protrusion 133 and the recess 134 have the same structure. Exemplarily, the protrusion 133 is a pyramid or hemisphere or other shape extending toward the driving array layer 120 , and the recess 134 is a pyramid or hemisphere or other shape extending away from the driving array layer 120 .

[0081] Optionally, the shapes of the protruding portion 133 and the recessed portion 134 in the first shielding portion 131 and the second shielding portion 132 are the same or different.

[0082] See also Fig.12 , Fig.12 1 is a top view of a shielding layer of a display panel according to some other embodiments of the present application.

[0083] In some embodiments, Fig.12 As shown, a plurality of hollow portions 135 are disposed on the shielding layer 130 , and the hollow portions 135 penetrate the shielding layer 130 .

[0084] In these embodiments, a plurality of hollow portions 135 are disposed on the shielding layer 130 . The hollow portions 135 penetrate the shielding layer 130 to improve the light transmittance of the shielding layer 130 and reduce the weakening of the light transmittance of the display panel 100 due to the shielding layer 130 .

[0085] Optionally, each hollow portion 135 is evenly spaced apart on the shielding layer 130 , so that light is transmitted evenly throughout the hollow portion 135 .

[0086] Exemplarily, the hollow portion 135 may be circular, rectangular, or diamond-shaped.

[0087] Optionally, a second shielding portion 132 is provided on the side of the active layer 144 of some thin film transistors 1211 facing away from the gate, and the second shielding portions 132 are arranged at intervals, and a hollow portion 135 is formed between two adjacent and spaced-apart second shielding portions 132, which helps to further improve the shielding effect of the second shielding portions 132.

[0088] In some embodiments, Fig.11 As shown, the shielding layer 130 includes a bottom wall 137 and a side wall 136 connected to the bottom wall 137 and extending along the thickness direction of the driving array layer.

[0089] In these embodiments, the shielding layer 130 includes a bottom wall 137 and a side wall 136 connected to the bottom wall 137 and extending along the thickness direction of the driving array layer, so that the shielding layer 130 can provide a more comprehensive shielding effect to improve the sampling accuracy of the sensor assembly.

[0090] Optionally, the bottom wall 137 and the side wall 136 of the shielding layer 130 are integrally formed to improve the structural strength of the shielding layer 130 .

[0091] In some embodiments, Figure 8 and Fig.11 As shown, the pixel circuit unit 121 further includes a thin film transistor 1211, the thin film transistor 1211 includes an active layer 144, the side wall 136 includes an extension end away from the bottom wall 137, and one end of the active layer 144 facing the bottom wall 137 is located between the bottom wall 137 and the extension end.

[0092] In these embodiments, the pixel circuit unit 121 also includes a thin film transistor 1211, the thin film transistor 1211 includes an active layer 144, the side wall 136 includes an extension end away from the bottom wall 137, one end of the active layer 144 facing the bottom wall 137 is located between the bottom wall 137 and the extension end, and the side surface of the active layer 144 is shielded by the side wall 136 of the shielding layer 130 to increase the relative area between the active layer 144 and the shielding layer 130, thereby improving the shielding effect of the shielding layer 130 on the active layer 144.

[0093] Optionally, the side wall 136 and the bottom wall 137 of the shielding layer 130 enclose a chamber, and the active layer 144 is accommodated in the chamber to improve the shielding effect of the shielding layer 130 on the active layer 144 .

[0094] In some embodiments, Figure 1 and Figure 3 As shown, a shielding layer 130 is disposed on the side of each pixel circuit unit 121 and each signal line 122 in the driving array layer 120 facing the sensor assembly.

[0095] In these embodiments, a shielding layer 130 is provided on the side of each pixel circuit unit 121 and each signal line 122 in the driving array layer 120 facing the sensor component to increase the shielding area of ​​the shielding layer 130, enhance the shielding effect of the shielding layer 130, and improve the sampling accuracy of the sensor component; and a shielding layer 130 is provided on the side of each pixel circuit unit 121 and each signal line 122 in the driving array layer 120 facing the sensor component, which helps to make the light transmission effect uniform throughout the display panel 100.

[0096] The driving array layer 120 of the display panel 100 includes a plurality of pixel circuit units 121 and a plurality of signal lines 122 connected to the pixel circuit units 121. In order to improve the uniformity of light transmission of the display panel 100, a second shielding portion 132 is provided at a specific one or several thin film transistors 1211 in each pixel circuit unit 121, and a first shielding portion 131 is provided at a specific one or several signal lines 122. Exemplarily, the first shielding portion 131 is provided at all the light emitting control lines and / or the reset signal line Vscan1 of the driving array, and the second shielding portion 132 is provided at at least one of the light emitting control transistor, the anode initialization transistor T7, i.e., the bias transistor T8 of the driving array.

[0097] See also Fig.13 , Fig.13 It is a signal noise line graph of the sensor component in the embodiment of the present application. Fig.13 FIG. 1 shows the signal noise detected by the sensor assembly after the shielding layer 130 is disposed on the side of each pixel circuit unit 121 and each signal line 122 in the driving array layer 120 facing the sensor assembly. Figure 6 and Fig.13 By comparison, it can be seen that after the shielding layer 130 is provided on the side of each pixel circuit unit 121 and each signal line 122 facing the sensor assembly in the driving array layer 120 , the signal noise of the sensor assembly is weakened and the sampling accuracy of the sensor assembly is improved.

[0098] Optionally, considering the shielding layer 130 shielding the optical sensor, the sensor component may be a microwave sensor.

[0099] In a second aspect, an embodiment of the present application provides a display device, which includes a sensor component and a display panel of the above-mentioned first direction embodiment, wherein a shielding layer is disposed between the sensor component and the driving array layer.

[0100] By arranging a shielding layer between the driving array layer and the sensor assembly, the interference of the driving array layer on the sensor assembly during operation is reduced, so as to improve the sampling accuracy of the sensor assembly.

[0101] In some embodiments, Figure 3 and Figure 5 As shown, the display panel 100 includes a first area 101 and a second area 102 , each of which is provided with at least one pixel circuit unit 121 , and the sensor component and the shielding layer 130 are both provided in the first area 101 .

[0102] In these embodiments, the display panel 100 includes a first area 101 and a second area 102, each of the first area 101 and the second area 102 is provided with at least one pixel circuit unit 121, and the sensor and the shielding layer 130 are both provided in the first area 101, so that the setting area of ​​the shielding layer 130 is reduced, the preparation steps of the shielding layer 130 are simplified, and the preparation difficulty and cost of the display panel 100 are reduced.

[0103] The sensor component and the shielding layer 130 are both disposed in the first region 101 , and the sensor component and the shielding layer 130 are stacked in a thickness direction of the display panel 100 .

[0104] Optionally, the sensor assembly and the shielding layer 130 are both disposed in the first area 101 , and the display panel 100 has a good screen transmittance in the second area 102 , and a low-cost optical fingerprint solution can be provided.

[0105] Optionally, if the shielding layer 130 is only provided in the first region 101, the light transmittance of the display device in the first region 101 and the second region 102 will be different, resulting in a large difference in the display effects of the first region 101 and the second region 102, which will affect the user experience. Therefore, in the process of preparing the display device, more wires can be concentrated in the second region 102, or virtual wires can be provided in the second region 102 to make the light transmittance of the first region 101 and the second region 102 uniform.

[0106] Optionally, the virtual wire disposed in the second area 102 is connected to the power supply voltage signal line to reduce the panel impedance of the display panel 100 .

[0107] The display device in the embodiments of the present application includes but is not limited to a mobile phone, a personal digital assistant (PDA), a tablet computer, a laptop computer, a television, a driving recorder and other devices.

[0108] The above is only a specific implementation of the present application. Those skilled in the art can clearly understand that for the convenience and simplicity of description, the specific working processes of the systems, modules and units described above can refer to the corresponding processes in the aforementioned method embodiments, and will not be repeated here. It should be understood that the protection scope of the present application is not limited to this. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed in this application, and these modifications or replacements should be included in the protection scope of this application.

Claims

1. A display panel, characterized in that: include: A light-emitting layer including a plurality of light-emitting pixels; A driving array layer, disposed below the light-emitting layer, the driving array layer and the light-emitting pixels are electrically connected, and the driving array layer includes a plurality of pixel circuit units and signal lines connected to the pixel circuit units; The shielding layer comprises a first shielding portion, wherein the first shielding portion is arranged on a side of at least a portion of the signal line away from the light-emitting layer.

2. The display panel according to claim 1, characterized in that: The signal line comprises a first signal line extending along a first direction and a second signal line extending along a second direction, the first direction and the second direction intersect, and the first shielding portion is arranged on a side of the first signal line away from the light emitting layer.

3. The display panel according to claim 2, characterized in that: The first shielding portion is disposed on a side of the first signal line whose operating frequency is greater than or equal to 120 Hz and is away from the light-emitting layer.

4. The display panel according to any one of claims 1 to 3, characterized in that: The pixel circuit unit includes a thin film transistor, and the shielding layer further includes a second shielding portion, which is arranged on a side of an active layer of at least a portion of the thin film transistor that is away from a gate.

5. The display panel according to claim 4, characterized in that: The driving array layer further includes a power supply voltage signal line, and at least one of the first shielding part and the second shielding part is connected to the power supply voltage signal line, or the first shielding part and the second shielding part are connected to each other and to the power supply voltage signal line.

6. The display panel according to claim 4, characterized in that: The pixel circuit unit includes a light emission control transistor, and the signal line includes a light emission control signal line EM connected to the light emission control transistor. The first shielding portion is located at a side of the light emitting control signal line EM away from the light emitting layer, and the second shielding portion is located at a side of the active layer of the light emitting control transistor away from the gate.

7. The display panel according to claim 4, characterized in that: The pixel circuit unit further includes an anode initialization transistor T7 and a bias transistor T8, the signal line includes a reset signal line Vscan1, the reset signal line Vscan1 is connected to the gate of the anode initialization transistor T7 and / or the gate of the bias transistor T8, The first shielding portion is located at a side of the reset signal line Vscan1 away from the light emitting layer, and / or the second shielding portion is located at a side of an active layer of at least one of the anode initialization transistor T7 and the bias transistor T8 away from a gate.

8. The display panel according to claim 1, characterized in that: The shielding layer includes a protruding portion facing the driving array layer and a recessed portion away from the driving array layer.

9. The display panel according to claim 1, characterized in that: The shielding layer is provided with a plurality of hollow parts, and the hollow parts penetrate through the shielding layer.

10. The display panel according to claim 1, characterized in that: The shielding layer includes a bottom wall and a side wall connected to the bottom wall and extending along a thickness direction of the driving array layer.

11. The display panel according to claim 10, characterized in that: The pixel circuit unit further includes a thin film transistor, wherein the thin film transistor includes an active layer. The side wall includes an extension end facing away from the bottom wall, and one end of the active layer facing the bottom wall is located between the bottom wall and the extension end.

12. A display device, characterized in that: The display device comprises a sensor component and the display panel according to any one of claims 1 to 11, wherein the shielding layer is arranged between the sensor component and the driving array layer.

13. The display device according to claim 12, characterized in that: The display panel includes a first area and a second area, the first area is provided with at least one pixel circuit unit, and the sensor component and the shielding layer are both provided in the first area.

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