CN113383424A

CN113383424A - Display panel and electronic device

Info

Publication number: CN113383424A
Application number: CN201980090118.9A
Authority: CN
Inventors: 张祖强; 谭桂财; 邱昌明
Original assignee: Shenzhen Royole Technologies Co Ltd
Current assignee: Shenzhen Royole Technologies Co Ltd
Priority date: 2019-07-19
Filing date: 2019-07-19
Publication date: 2021-09-10
Also published as: WO2021012094A1

Abstract

A display panel (10) and an electronic device (1) are provided. The display panel (10) comprises a substrate (110), a plurality of data lines (120), a light emitting unit (140) and a shielding layer (193), wherein the plurality of data lines (120) are arranged on one side of the substrate (110) at intervals, the light emitting unit (140) comprises a cathode (141), an overlapping region is arranged between the cathode (141) and the data lines (120), the shielding layer (193) is positioned between the cathode (141) and the data lines (120), at least part of the shielding layer (193) is positioned in the overlapping region, and the shielding layer (193) is used for reducing coupling between the cathode (141) and the data lines (120). The display panel (10) is provided with a shielding layer (193) in at least a partial overlapping area between the cathode (141) and the data line (120), and the shielding layer (193) can reduce the coupling between the cathode (141) and the data line (120), thereby weakening or even eliminating the crosstalk phenomenon of the display panel (10) caused by the coupling effect between the cathode (141) and the data line (120). Therefore, the display panel (10) has high display quality.

Description

Display panel and electronic device

Technical Field

The present disclosure relates to display panels, and particularly to a display panel and an electronic device.

Background

With the progress of technology, electronic devices with display functions are gradually entering the lives of people. Electronic devices typically include a display panel for displaying video, pictures, or text. Then, when the conventional display panel displays videos, pictures or characters, the display screen is often not good due to the coupling effect between the lines and the devices.

Disclosure of Invention

The embodiment of the application discloses display panel, display panel includes base plate, many data lines, luminescence unit, and shielding layer, many data line intervals set up one side of base plate, luminescence unit includes the negative pole, just the negative pole with overlap area has between the data line, the shielding layer is located the negative pole with between the data line, just the shielding layer is located at least partially the overlap area, the shielding layer is used for reducing the negative pole with coupling between the data line.

The application also provides an electronic device, which comprises the display panel.

Compared with the prior art, the display panel provided by the application is provided with the shielding layer in at least a part of the overlapping area between the cathode and the data line, and the shielding layer can reduce the coupling between the cathode and the data line, so that the crosstalk phenomenon of the display panel caused by the coupling effect between the cathode and the data line is weakened or even eliminated. Therefore, the display panel has high display quality.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.

Fig. 1 is a top view of a display panel according to a first embodiment of the present application.

Fig. 2 is a sectional view taken along line I-I in fig. 1.

Fig. 3 is a schematic structural diagram of a light emitting unit.

Fig. 4 is a top view of a display panel according to a second embodiment of the present application.

Fig. 5 is a sectional view taken along line II-II in fig. 4.

Fig. 6 is a top view of a display panel according to a third embodiment of the present application.

Fig. 7 is a sectional view taken along line III-III of fig. 6.

Fig. 8 is a top view of a display panel according to a fourth embodiment of the present application.

Fig. 9 is a cross-sectional view taken along line IV-IV of fig. 8.

Fig. 10 is a top view of a display panel according to a fifth embodiment of the present application.

Fig. 11 is a cross-sectional view taken along line V-V of fig. 10.

Fig. 12 is a top view of a display panel according to a sixth embodiment of the present application.

Fig. 13 is a cross-sectional view taken along line VI-VI in fig. 12.

Fig. 14 is a top view of a display panel according to a seventh embodiment of the present application.

Fig. 15 is a schematic structural diagram of a thin film transistor in the driving circuit of fig. 14.

Fig. 16 is a schematic circuit diagram of a driving circuit for driving light emitting units in a display panel according to an embodiment of the present disclosure.

Fig. 17 is a top view of a display panel according to an eighth embodiment of the present application.

Fig. 18 is a schematic structural diagram of a thin film transistor in the middle driver circuit.

Fig. 19 is a schematic view of an electronic device provided in an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Referring to fig. 1 and fig. 2 together, fig. 1 is a top view of a display panel according to a first embodiment of the present application; fig. 2 is a sectional view taken along line I-I in fig. 1. It is to be understood that since the topmost layer in fig. 1 is the cathode 141 of the light emitting unit 140, the cathode 141 is omitted in fig. 1 in order to illustrate the layer structure below the cathode 141. The display panel 10 includes a substrate 110, a plurality of data lines 120, a light emitting unit 140, and a shielding layer 193. The plurality of data lines 120 are disposed at intervals on one side of the substrate 110. The light emitting unit 140 includes a cathode 141, and an overlap region is formed between the cathode 141 and the data line 120. The shielding layer 193 is located between the cathode 141 and the data line 120, and the shielding layer 193 is at least partially located at the overlapping region, the shielding layer 193 is used for reducing the coupling between the cathode 141 and the data line 120.

In the related art, the cathode 141 and the data line 120 in the display panel 10 have an overlapping region, so that the cathode 141 and the data line 120 generate a coupling capacitance, and when the coupling effect of the coupling capacitance is large enough, when the pixel voltage in the display panel 10 changes instantaneously, the voltage of the common electrode in the display panel 10 is affected, so that the voltage of the common electrode deviates from the set potential and the time for the common voltage to deviate from the set potential is longer, and the time for the common voltage to return to the original potential is longer. In general, the time for the voltage of the common electrode to return to the original potential is longer than the time for writing the signal in one scan line of the display panel 10, so that a serious error phenomenon, called crosstalk (crosstalk), may occur when the display panel 10 displays a picture.

Generally, the material of the shielding layer 193 is metal or conductive metal oxide. The display panel 10 of the present application is provided with the shielding layer 193 in at least a partial overlapping region between the cathode 141 and the data line 120, and the shielding layer 193 can reduce the coupling between the cathode 141 and the data line 120, thereby weakening or even eliminating the crosstalk phenomenon of the display panel 10 caused by the coupling between the cathode 141 and the data line 120. Therefore, the display panel 10 of the present application has a high display quality.

Further, in this embodiment, the light emitting unit 140 further includes an anode 145, and the shielding layer 193 is disposed at the same layer and at a distance from the anode 145.

In this embodiment, the shielding layer 193 is provided at the same layer as and spaced apart from the anode 145, so that the manufacturing process of the display panel 10 can be simplified.

Further, in one embodiment, the shielding layer 193 is spaced apart from and insulated from the anode 145. Compared to the shielding layer 193 being connected or electrically connected to the anode 145, in the present embodiment, the shielding layer 193 is spaced apart from the anode 145 for insulation, so that the shielding layer 193 can prevent the light emitting unit 140 from being affected by the shielding layer 193.

Referring to fig. 3, fig. 3 is a schematic structural diagram of a light emitting unit. The light emitting unit 140 includes an anode 145, a hole injection and transport layer 144, a light emitting layer 143, an electron injection and transport layer 142, and a cathode 141, which are stacked. The light emitting unit 140 may be directly disposed on the substrate 110 or disposed on the substrate 110 through another layer structure, and fig. 2 illustrates an example in which the light emitting unit 140 is disposed on the substrate 110 through an insulating layer 193. The anode 145 is used for loading a first signal and generating holes under the action of the first signal, and the hole injection and transport layer 144 is used for transporting the holes generated by the anode 145 to the light emitting layer 143. The cathode 141 is used for applying a second signal and generating electrons under the action of the second signal, and the electron injection and transport layer 142 is used for transporting the electrons generated by the cathode 141 to the light emitting layer 143. The electrons and the holes are recombined in the light emitting layer 143 to generate light.

Further, please refer to fig. 4 and 5 together, fig. 4 is a top view of a display panel according to a second embodiment of the present application; fig. 5 is a sectional view taken along line II-II in fig. 4. The display panel 10 provided in this embodiment is substantially the same as the display panel 10 provided in the first embodiment, except that in this embodiment, the light emitting unit 140 further includes an anode 145. The display panel 10 further includes a first signal line 150 and a second signal line 160, wherein the first signal line 150 is used for transmitting a first signal, and the second signal line 160 is used for transmitting a second signal. When the first signal is applied to the anode 145 and the second signal is applied to the cathode 141 to drive the light emitting unit 140 to emit light, the shielding layer 193 is electrically connected to the first signal line 150.

Specifically, the first signal line 150 may also be referred to as a VDD line, the first signal line 150 functions to transmit a first signal to the anode 145, the first signal line 150 and the anode 145 are two components, and the first signal line 150 cannot be equal to the anode 145. The second signal line 160 may also be a Vinit line, the second signal line 160 is used for transmitting a second signal to the cathode 141, the second signal line 160 and the cathode 141 are two components, and the second signal line 160 cannot be equal to the cathode 141. Referring to fig. 3 and the related description, the first signal is applied to the anode 145, the anode 145 generates holes under the action of the first signal, and the holes generated by the anode 145 are transmitted to the light-emitting layer 143 through the hole injection and transport layer 144. The cathode 141 generates electrons by the second signal, and the electrons generated from the cathode 141 are transferred to the light emitting layer 143 through the electron injection and transport layer 142. The electrons and the holes are recombined in the light-emitting layer 143 to emit light. The shielding layer 193 of the present application is electrically connected to the first signal line 150, so that the coupling of the data line 120 to the cathode 141 can be weakened or even avoided, and thus the crosstalk phenomenon of the display panel 10 caused by the coupling between the cathode 141 and the data line 120 can be weakened or even eliminated. Therefore, the display panel 10 of the present application has a high display quality.

Further, an insulating layer 194 is disposed between the first signal line 150 and the shielding layer 193, a through hole is formed in the insulating layer 194, and the shielding layer 193 is electrically connected to the first signal line 150 through a conductive material filled in the through hole.

Further, the shield layer 193 includes a first shield part 193a, a second shield part 193b, and a connection part 193c connected between the first shield part 193a and the second shield part 193 b. The projection of the first shielding part 193a on the substrate 110 at least partially covers the projection of the data line 120 on the substrate 110, the projection of the second shielding part 193b on the substrate 110 at least partially covers the projection of the first signal line 150 on the substrate 110, and the second shielding part 193b is electrically connected to the first signal line 150. Specifically, when the insulating layer 194 is disposed between the first signal line 150 and the shield layer 193, a through hole is disposed in the insulating layer 194 corresponding to the second shield portion 193b and the first signal line 150, and the second shield portion 193b is electrically connected to the first signal line 150 through a conductive material filled in the through hole.

In this embodiment, the display panel 10 includes a plurality of data lines 120 disposed at intervals, the display panel 10 further includes a plurality of scan lines 130 disposed at intervals, and a pixel region 10c is formed between two adjacent data lines 120 and two adjacent scan lines 130. The pixel region 10c is used to dispose the light emitting unit 140. The first signal line 150 is disposed between the data line 120 and the light emitting unit 140, and an extending direction of the first signal line 150 is the same as or substantially the same as an extending direction of the data line 120. The second signal line 160 is disposed between the scan line 130 and the light emitting unit 140, and an extending direction of the second signal line 160 is the same as or substantially the same as an extending direction of the scan line 130.

Referring to fig. 6 and 7 together, fig. 6 is a top view of a display panel according to a third embodiment of the present application; fig. 7 is a sectional view taken along line III-III of fig. 6. The display panel 10 according to the present embodiment is basically the same as the display panel 10 according to the second embodiment, except that the display panel 10 further includes a first signal line 150 and a second signal line 160. The first signal line 150 is used for transmitting a first signal, and the second signal line 160 is used for transmitting a second signal. When the first signal is applied to the anode 145 and the second signal is applied to the cathode 141 to drive the light emitting unit 140 to emit light, the shielding layer 193 is electrically connected to the second signal line 160.

Specifically, the first signal line 150 may also be referred to as a VDD line, and the second signal line 160 may also be referred to as a Vinit line. Referring to fig. 3 and the related description, the first signal is applied to the anode 145, the anode 145 generates holes under the action of the first signal, and the holes generated by the anode 145 are transmitted to the light-emitting layer 143 through the hole injection and transport layer 144. The cathode 141 generates electrons by the second signal, and the electrons generated from the cathode 141 are transferred to the light emitting layer 143 through the electron injection and transport layer 142. The electrons and the holes are recombined in the light-emitting layer 143 to emit light. The shielding layer 193 of the present application is electrically connected to the second signal line 160, so that the coupling of the data line 120 to the cathode 141 can be weakened or even avoided, and thus the crosstalk phenomenon of the display panel 10 caused by the coupling between the cathode 141 and the data line 120 can be weakened or even eliminated. Therefore, the display panel 10 of the present application has a high display quality.

Further, an insulating layer 194 is disposed between the second signal line 160 and the shielding layer 193. A through hole is formed in the insulating layer 194, and the shielding layer 193 is electrically connected to the second signal line 160 through a conductive material filled in the through hole.

Further, an insulating layer 194 is disposed between the data line 120 and the second signal line 160, and the data line 120 and the second signal line 160 are cross-insulated by the insulating layer 194. The insulating layer 194 is used for insulating and isolating the data line 120 from the second signal.

Referring to fig. 8 and 9 together, fig. 8 is a top view of a display panel according to a fourth embodiment of the present application; fig. 9 is a cross-sectional view taken along line IV-IV of fig. 8. The display panel 10 according to this embodiment is substantially the same as the display panel 10 according to the third embodiment, except that an insulating layer 194 is provided at the intersection of the data line 120 and the second signal line 160, and the rest of the data line 120 and the rest of the second signal line 160 are located at the same layer in this embodiment. In this embodiment, the insulating layer 194 is provided at the intersection between the data line 120 and the second signal line 160, so that the data line 120 and the second signal line 160 can be insulated and isolated, and the rest of the data line 120 and the rest of the second signal line 160 are located at the same layer, which is advantageous for thinning the display panel 10.

Referring to fig. 10 and 11 together, fig. 10 is a top view of a display panel according to a fifth embodiment of the present application; fig. 11 is a cross-sectional view taken along line V-V of fig. 10. The display panel 10 provided in this embodiment is substantially the same as the display panel 10 provided in the first embodiment, except that in this embodiment, the display panel 10 further includes a common electrode line 170. The common electrode line 170 is applied with a power voltage, the common electrode line 170 and the data line 120 are arranged in a cross-insulated manner, and the shielding layer 193 is electrically connected with the common electrode line 170.

In this embodiment, the common electrode line 170 is separately provided to provide a power voltage to the shielding layer 193, so that the coupling of the data line 120 to the cathode 141 can be weakened or even avoided, and thus the crosstalk phenomenon of the display panel 10 caused by the coupling between the cathode 141 and the data line 120 can be weakened or even eliminated. Therefore, the display panel 10 of the present application has a high display quality.

Further, in the present embodiment, the display panel 10 includes a plurality of data lines 120 disposed at intervals, the display panel 10 further includes a plurality of scan lines 130 disposed at intervals, and a pixel region 10c is formed between two adjacent data lines 120 and two adjacent scan lines 130. The pixel region 10c is used to dispose the light emitting unit 140. The display panel 10 further includes a first signal line 150 and a second signal line 160. The first signal line 150 is used for transmitting a first signal, and the second signal line 160 is used for transmitting a second signal, when the first signal is applied to the anode 145 and the second signal is applied to the cathode 141, to drive the light emitting unit 140 to emit light. The first signal line 150 is disposed between the data line 120 and the light emitting unit 140, and an extending direction of the first signal line 150 is the same as or substantially the same as an extending direction of the data line 120. The second signal line 160 is disposed between the scan line 130 and the light emitting unit 140, and an extending direction of the second signal line 160 is the same as or substantially the same as an extending direction of the scan line 130. The common electrode line 170 is crossed and insulated from the first signal line 150 and the data line 120, and the common electrode line 170 is spaced apart from the second signal line 160 and the scan line 130. The extending direction of the common electrode line 170 is the same or substantially the same as the extending direction of the data line 120. In this embodiment, the common electrode line 170 is disposed on a side of the second signal line 160 away from the scan line 130. It is to be understood that, in other embodiments, the position relationship between the common electrode line 170 and the second signal line 160 and the scan line 130 only needs to satisfy that the common electrode line 170, the second signal line 160 and the scan line 130 are arranged at intervals in an insulating manner. Optionally, the common electrode line 170 is disposed on the same layer as the second signal line 160. When the common electrode line 170 and the second signal line 160 are disposed on the same layer, the common electrode line 170 and the second signal line 160 are manufactured in the same process, which can save the manufacturing process.

Further, the common electrode is spaced apart from the second signal line 160 and insulated therefrom. Compared to the common electrode electrically connected to the second signal line 160, in the present embodiment, the common electrode is spaced apart from the second signal line 160 and insulated from the second signal line 160, so that the shielding layer 193 is spaced apart from the second signal line 160 and insulated from the shielding layer 193, thereby preventing the shielding layer 193 from affecting the light emission of the light emitting unit 140.

Further, an insulating layer 194 is disposed at the intersection of the common electrode line 170 and the data line 120, and the rest of the data line 120 and the rest of the common electrode line 170 are located at the same layer. Alternatively, an insulating layer 194 is disposed between the common electrode line 170 and the data line 120, and the common electrode line 170 and the data line 120 are crossed and insulated by the insulating layer 194. In the schematic diagram of the present embodiment, an insulating layer 194 is provided between the common electrode line 170 and the data line 120.

Referring to fig. 12 and 13 together, fig. 12 is a top view of a display panel according to a sixth embodiment of the present application; fig. 13 is a cross-sectional view taken along line VI-VI in fig. 12. The display panel 10 provided in this embodiment has substantially the same structure as the display panel 10 provided in the first embodiment, except that in this embodiment, the display panel 10 includes a display region 10a and a non-display region 10b disposed at the periphery of the display region 10 a. The display panel 10 further includes a power line 195, the power line 195 is applied with a power voltage, the power line 195 is disposed corresponding to the non-display region 10b, and the shielding layer 193 is electrically connected to the power line 195.

In this embodiment mode, the shielding layer 193 is electrically connected to the power line 195 in the non-display region 10b, so that the influence and interference of the power line 195 on other circuits in the display region 10a, which are added to the display region 10a, are prevented.

Further, an insulating layer 194 is disposed between the power line 195 and the shielding layer 193, a through hole is opened in the insulating layer 194, and the power line 195 is electrically connected to the shielding layer 193 through a conductive material filled in the through hole. Alternatively, the power line 195 and the shielding layer 193 are located at the same layer, and the power line 195 and the shielding layer 193 are directly electrically connected. In this embodiment, the power supply line 195 is electrically connected to the shield layer 193 through a conductive material filled in the through hole.

Referring to fig. 14 and fig. 15 together, fig. 14 is a top view of a display panel according to a seventh embodiment of the present application; fig. 15 is a schematic structural diagram of a thin film transistor in the driving circuit of fig. 14. The driving circuit 180 in the display panel 10 in this embodiment mode can be incorporated into the display panel 10 provided in any one of the first to sixth embodiment modes, and in this embodiment mode, the incorporation of the driving circuit 180 into the display panel 10 provided in the sixth embodiment mode is exemplified. The display panel 10 further includes a driving circuit 180, a first signal line 150, and a second signal line 160. The light emitting unit 140 further includes an anode 145, the first signal line 150 is used for transmitting a first signal, and the second signal line 160 is used for transmitting a second signal. When the driving circuit 180 is turned on, the first signal is applied to the anode 145 and the second signal is applied to the cathode 141 to drive the light emitting unit 140 to emit light. The driving circuit 180 includes a thin film transistor Q including a gate electrode 181, a gate insulating layer 182, a semiconductor layer 183, a source electrode 184, a drain electrode 185, and a planarization layer 186. The gate electrode 181 is disposed on one side of the substrate 110, the gate insulating layer 182 covers the gate electrode 181, the semiconductor layer 183 is disposed on a surface of the gate insulating layer 182 facing away from the gate electrode 181, the source electrode 184 and the drain electrode 185 are respectively connected to the semiconductor layer 183, and the source electrode 184 and the drain electrode 185 are disposed at an interval. The planarization layer 186 covers the source 184 and the drain 185, the planarization layer 186 is provided with a through hole corresponding to the drain 185, the data line 120 is disposed on a side of the planarization layer 186 away from the substrate 110, the data line 120 is covered with a data line insulating layer 196, and the shielding layer 193 is disposed on a surface of the data line insulating layer 196 away from the data line 120.

Referring to fig. 16, fig. 16 is a schematic circuit diagram of a driving circuit for driving a light emitting unit in a display panel according to an embodiment of the present disclosure. The display panel 10 includes a plurality of scan lines 130 disposed at intervals, and a plurality of data lines 120 disposed at intervals, wherein the data lines 120 are disposed to cross and insulate the scan lines 130. The scan lines 130 are used for transmitting scan signals, the data lines 120 are used for transmitting data signals, two adjacent data lines 120 and two adjacent scan lines 130 define a pixel region 10c, the pixel region 10c is used for disposing the light emitting unit 140, and the pixel region 10c is further provided with a first thin film transistor Q1 and a second thin film transistor Q2. When the first thin film transistor Q1 is turned on under the control of a scan signal and the second thin film transistor Q2 is turned on under the control of a data signal, the first signal is applied to the anode of the light emitting unit 140 and the cathode of the light emitting unit 140 is used to receive the second signal. In the schematic diagram of the present embodiment, a first signal is applied to the anode of the light emitting unit 140, and a second signal is applied to the cathode of the light emitting unit 140, where the first signal is at a high level and the second signal is at a low level.

Further, the pixel region 10C is further provided with a first capacitor C1, the first thin film transistor Q1 includes a first gate g1, a first terminal p1, and a second terminal p2, and the second thin film transistor Q2 includes a second gate g2, a third terminal p3, and a fourth terminal p 4. The first gate g1 is electrically connected to the scan line 130120 to receive the scan signal, the first terminal p1 is electrically connected to the data line 120130 to receive the data signal, the second terminal p2 is electrically connected to the second gate g2, the third terminal p3 is used to receive the first signal, the fourth terminal p4 is electrically connected to the anode of the light emitting unit 140, one terminal of the first capacitor C1 is electrically connected to the second gate g2, and the other terminal of the first capacitor C1 is electrically connected to the third terminal p 3; wherein the first end p1 is a source and the second end p2 is a drain, or the first end p1 is a drain and the second end p2 is a source; the third terminal p3 is a source and the fourth terminal p4 is a drain, or the third terminal p3 is a drain and the fourth terminal p4 is a source.

In this embodiment, the driving circuit 180 includes a first thin film transistor Q1, a second thin film transistor Q2, and a first capacitor C1. The first thin film transistor Q1 may be an N-type thin film transistor or a P-type thin film transistor; accordingly, the second thin film transistor Q2 may be an N-type thin film transistor or a P-type thin film transistor. In fig. 12, the first thin film transistor Q1 and the second thin film transistor Q2 are both N-type thin film transistors for illustration. When the gate 181 of the N-type thin film transistor receives a high level signal, the source 184 and the drain 185 of the N-type thin film transistor are turned on; when the gate electrode 181 of the N-type thin film transistor receives a low level signal, the source electrode 184 and the drain electrode 185 of the N-type thin film transistor are turned off. When the gate 181 of the P-type thin film transistor receives a low level signal, the source 184 and the drain 185 of the P-type thin film transistor are turned on; when the gate electrode 181 of the P-type thin film transistor receives a high level signal, the source electrode 184 and the drain electrode 185 of the P-type thin film transistor are turned off.

It is understood that the driving circuit 180 is only one type of the driving circuit 180, and the driving circuit 180 may have other structures.

Referring to fig. 17 and 18 together, fig. 17 is a top view of a display panel according to an eighth embodiment of the present application; fig. 18 is a schematic structural diagram of a thin film transistor in the middle driver circuit. The driving circuit 180 in the display panel 10 in this embodiment mode can be incorporated into the display panel 10 provided in any one of the first to sixth embodiment modes, and in this embodiment mode, the incorporation of the driving circuit 180 into the display panel 10 provided in the sixth embodiment mode is exemplified. The display panel 10 further includes a driving circuit 180, a first signal line 150, and a second signal line 160. The light emitting unit 140 further includes an anode 145, the first signal line 150 is used for transmitting a first signal, and the second signal line 160 is used for transmitting a second signal. When the driving circuit 180 is turned on, the first signal is applied to the anode 145 and the second signal is applied to the cathode 141 to drive the light emitting unit 140 to emit light. The driving circuit 180 includes a thin film transistor including a light-shielding layer 187, a first insulating layer 188, a semiconductor layer 183, a second insulating layer 189, a gate electrode 181, a third insulating layer 190, a source electrode 184, a drain electrode 185, and a fourth insulating layer 191. The light-shielding layer 187 is disposed on one side of the substrate 110, the first insulating layer 188 covers the light-shielding layer 187, the semiconductor layer 183 is disposed on a surface of the first insulating layer 188 facing away from the light-shielding layer 187 and corresponding to the light-shielding layer 187, and the second insulating layer 189 covers the semiconductor layer 183. The gate 181 is disposed on a surface of the second insulating layer 189 opposite to the semiconductor layer 183, the third insulating layer 190 covers the gate 181, the source 184, the drain 185 and the data line 120 are disposed on a surface of the third insulating layer 190 opposite to the gate 181, the source 184 and the drain 185 are respectively connected to two opposite ends of the semiconductor layer 183 through a first via and a second via formed in the third insulating layer 190, and the fourth insulating layer 191 covers the source 184 and the drain 185. The shielding layer 193 is disposed on a surface of the fourth insulating layer 191 facing away from the substrate 110.

The driving circuit 180 in this embodiment can refer to the driving circuit 180 described in fig. 16 and the related description thereof, and the description thereof is omitted here.

Further, the present application also provides an electronic device 1, please refer to fig. 19 together, and fig. 19 is a schematic diagram of the electronic device according to the embodiment of the present application. The electronic device 1 comprises a display panel 10. Please refer to the foregoing description for the display panel 10, which is not described herein. The electronic apparatus 1 includes, but is not limited to, a smart phone, an internet device (MID), an electronic book, a Portable Player Station (PSP), or a Personal Digital Assistant (PDA).

The principle and the implementation of the present application are explained herein by applying specific examples, and the above description of the embodiments is only used to help understand the core idea of the present application; meanwhile, for a person skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.

Claims

The display panel is characterized by comprising a substrate, a plurality of data lines, a light-emitting unit and a shielding layer, wherein the data lines are arranged on one side of the substrate at intervals, the light-emitting unit comprises a cathode, an overlapping area is formed between the cathode and the data lines, the shielding layer is positioned between the cathode and the data lines, at least part of the shielding layer is positioned in the overlapping area, and the shielding layer is used for reducing the coupling between the cathode and the data lines.
The display panel according to claim 1, wherein the light emitting unit further includes an anode, and the shielding layer is disposed at a same layer and a distance from the anode.
The display panel according to claim 1, wherein the light emitting unit further includes an anode, the display panel further includes a first signal line and a second signal line, the first signal line is used to transmit a first signal, the second signal line is used to transmit a second signal, the light emitting unit is driven to emit light when the first signal is applied to the anode and the second signal is applied to the cathode, and the shielding layer is electrically connected to the first signal line.
The display panel according to claim 3, wherein an insulating layer is provided between the first signal line and the shielding layer, a via hole is formed in the insulating layer, and the shielding layer is electrically connected to the first signal line through a conductive material filled in the via hole.
The display panel according to claim 3, wherein the shield layer includes a first shield portion, a second shield portion, and a connecting portion connected between the first shield portion and the second shield portion, a projection of the first shield portion on the substrate at least partially covers a projection of the data line on the substrate, a projection of the second shield portion on the substrate at least partially covers a projection of the first signal line on the substrate, and the second shield portion is electrically connected to the first signal line.
The display panel according to claim 1, wherein the display panel further comprises a first signal line and a second signal line, the first signal line is used for transmitting a first signal, the second signal line is used for transmitting a second signal, the first signal is applied to the anode and the second signal is applied to the cathode to drive the light emitting unit to emit light, and the shielding layer is electrically connected to the second signal line.
The display panel according to claim 6, wherein an insulating layer is disposed between the second signal line and the shielding layer, a through hole is formed in the insulating layer, and the shielding layer is electrically connected to the second signal line through a conductive material filled in the through hole.
The display panel according to claim 7, wherein an insulating layer is provided between the data line and the second signal line, and wherein the data line and the second signal line are cross-insulated by the insulating layer.
The display panel according to claim 7, wherein an insulating layer is provided at a crossing of the data line and the second signal line, and a remaining portion of the data line is located at the same layer as a remaining portion of the second signal line.
The display panel according to claim 1, wherein the display panel further comprises a common electrode line to which a power supply voltage is applied, the common electrode line is provided to cross and insulate the data line, and the shielding layer is electrically connected to the common electrode line.
The display panel according to claim 10, wherein an insulating layer is provided at intersections of the common electrode lines and the data lines, and the remaining portions of the data lines are located at the same layer as the remaining portions of the common electrode lines.
The display panel according to claim 10, wherein an insulating layer is disposed between the common electrode lines and the data lines, and the common electrode lines and the data lines are cross-insulated by the insulating layer.
The display panel according to claim 12, wherein the light emitting unit further includes an anode, the display panel further includes a first signal line and a second signal line, the first signal line is used to transmit a first signal, the second signal line is used to transmit a second signal, the common electrode line is spaced apart from the second signal line to drive the light emitting unit to emit light when the first signal is applied to the anode and the second signal is applied to the cathode.
The display panel according to claim 13, wherein the common electrode line and the second signal line are provided in the same layer.
The display panel according to claim 1, wherein the display panel includes a display region and a non-display region disposed at a periphery of the display region, the display panel further includes a power line to which a power voltage is applied, the power line being disposed corresponding to the non-display region, and the shielding layer is electrically connected to the power line.
The display panel according to claim 15, wherein an insulating layer is disposed between the power line and the shielding layer, the insulating layer is provided with a through hole, and the power line is electrically connected to the shielding layer through a conductive material filled in the through hole.
The display panel according to claim 15, wherein the power supply line is located at the same layer as the shielding layer, and the power supply line is directly electrically connected to the shielding layer.
The display panel according to any one of claims 1 to 17, wherein the display panel further comprises a driving circuit, a first signal line, and a second signal line, the light emitting unit further comprises an anode, the first signal line is configured to transmit a first signal, the second signal line is configured to transmit a second signal, when the driving circuit is turned on, the first signal is applied to the anode and the second signal is applied to the cathode to drive the light emitting unit to emit light, the driving circuit comprises a thin film transistor, the thin film transistor comprises a gate electrode, a gate insulating layer, a semiconductor layer, a source electrode, a drain electrode, and a planarization layer, the gate electrode is disposed on one side of the substrate, the gate insulating layer covers the gate electrode, the semiconductor layer is disposed on a surface of the gate insulating layer away from the gate electrode, and the source electrode and the drain electrode are respectively connected to the semiconductor layer, the source electrode and the drain electrode are arranged at intervals, the flat layer covers the source electrode and the drain electrode, the flat layer is provided with a through hole corresponding to the drain electrode, the data line is arranged on one side of the flat layer, which is far away from the substrate, the data line is covered with a data line insulating layer, and the shielding layer is arranged on the surface of the data line insulating layer, which is far away from the data line.
The display panel according to any one of claims 1 to 17, wherein the display panel further comprises a driving circuit, a first signal line, and a second signal line, wherein the light emitting unit further comprises an anode, the first signal line is configured to transmit a first signal, the second signal line is configured to transmit a second signal, the first signal is applied to the anode and the second signal is applied to the cathode to drive the light emitting unit to emit light when the driving circuit is turned on, the driving circuit comprises a thin film transistor, the thin film transistor comprises a light shielding layer, a first insulating layer, a semiconductor layer, a second insulating layer, a gate electrode, a third insulating layer, a source electrode, a drain electrode, and a fourth insulating layer, the light shielding layer is disposed on one side of the substrate, the first insulating layer covers the light shielding layer, the semiconductor layer is disposed on a surface of the first insulating layer facing away from the light shielding layer and corresponds to the light shielding layer, the second insulating layer covers the semiconductor layer, the gate electrode is arranged on the surface, away from the semiconductor layer, of the second insulating layer, the third insulating layer covers the gate electrode, the source electrode, the drain electrode and the data line are arranged on the surface, away from the gate electrode, of the third insulating layer, the source electrode and the drain electrode are connected to two opposite ends of the semiconductor layer through a first through hole and a second through hole which are formed in the third insulating layer respectively, the fourth insulating layer covers the source electrode and the drain electrode, and the shielding layer is arranged on the surface, away from the substrate, of the fourth insulating layer.
An electronic device, characterized in that the electronic device comprises a display panel according to any one of claims 1-19.