Display panel

Abstract

The application provides a display panel, which comprises at least a plurality of pixel units, a plurality of data lines and a plurality of shielding lines, wherein each pixel unit comprises at least a multiplexing electrode configured to sense a touch operation, each data line extends along a first direction, is coupled to a plurality of pixel units arranged along the first direction, and is arranged in a layer different from the multiplexing electrode, and each shielding line is arranged between the data line and the multiplexing electrode, extends along the first direction, and is located directly above the corresponding data line. By arranging the shielding line between the multiplexing electrode configured to sense the touch operation and the data line, the mutual interference between the multiplexing electrode and the data line is effectively avoided, and the reliability of signal transmission in the display panel is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of display panel, and in particular, to a display panel. BACKGROUND

[0002] With the continuous development of electronic technology, more and more application scenarios in life need to use display panels. The display panel generally has a touch electrode for sensing the touch operation of a user and a data line configured to drive a pixel unit to display.

[0003] Therefore, how to avoid the mutual interference between the touch electrode and the data line in the display panel to improve the reliability of signal transmission in the display panel is a problem to be solved at present. SUMMARY

[0004] To solve the above problems or other problems, the present application provides the following technical solutions.

[0005] In a first aspect, the present application provides a display panel, comprising at least:

[0006] a plurality of pixel units, each of the pixel units comprising at least a multiplexing electrode configured to sense a touch operation;

[0007] a plurality of data lines, each of the data lines extending along a first direction and coupled to a plurality of the pixel units arranged along the first direction, and the data line and the multiplexing electrode being disposed in different layers; and

[0008] a plurality of shielding lines disposed between the data line and the multiplexing electrode, and each of the shielding lines extending along the first direction and being located directly above the corresponding data line.

[0009] According to the display panel of an embodiment of the present application, each of the shielding lines is configured to have a preset potential.

[0010] According to the display panel of an embodiment of the present application, the data line has a first line width in a second direction perpendicular to the first direction, and the shielding line has a second line width in the second direction, wherein the first line width is not greater than the second line width.

[0011] According to the display panel of an embodiment of the present application, the display panel further comprises a plurality of touch wires, the touch wires extending along the first direction and coupled to the multiplexing electrodes in the pixel units arranged along the first direction.

[0012] According to the display panel of an embodiment of the present application, the touch wires and the data lines are disposed in the same layer.

[0013] According to an embodiment of the present application, each of the pixel units further comprises a first bridge structure, the first bridge structure is arranged in the same layer as the shielding line, and the touch trace and each of the multiplexing electrodes are coupled through the corresponding first bridge structure.

[0014] According to an embodiment of the present application, each of the pixel units further comprises a pixel electrode, a second bridge structure, and a drain structure, the pixel electrode and the drain structure are coupled through the second bridge structure, the second bridge structure is arranged in the same layer as the shielding line, and the pixel electrode and the multiplexing electrode are arranged in different layers.

[0015] According to an embodiment of the present application, the display panel further comprises a light shielding structure, the light shielding structure is located below the drain structure, the data line is arranged in the same layer as the light shielding structure, and the touch trace is arranged in the same layer as the shielding line.

[0016] According to an embodiment of the present application, the multiplexing electrode in each of the pixel units is further configured to receive a common voltage to drive each of the pixel units to display in cooperation with the pixel electrode.

[0017] According to an embodiment of the present application, the projection of the pixel electrode in the thickness direction of the display panel has an overlapping part with the projection of the shielding line in the thickness direction.

[0018] The present application has the following beneficial effects: the present application provides a display panel, the display panel at least comprises a plurality of pixel units, a plurality of data lines, and a plurality of shielding lines, wherein each of the pixel units at least comprises a multiplexing electrode, the multiplexing electrode is configured to sense a touch operation, each of the data lines extends along a first direction, and is coupled to a plurality of pixel units arranged along the first direction, and the data line and the multiplexing electrode are arranged in different layers, each of the shielding lines is arranged between the data line and the multiplexing electrode, extends along the first direction, and is located directly above the corresponding data line, the present application sets the shielding line between the multiplexing electrode configured to sense the touch operation and the data line, effectively avoids the mutual interference between the multiplexing electrode and the data line, and improves the reliability of signal transmission in the display panel. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the present application, the following will briefly introduce the drawings needed to be used in the description of each embodiment according to the present application. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0020] Figures la-lbis a schematic diagram of an application scenario of a driving mode corresponding to a display panel provided by an embodiment according to the present application.

[0021] Figure 2 is a schematic diagram of a cross-sectional structure of a pixel unit provided by a first embodiment according to the present application.

[0022] Figure 3 is a schematic diagram of a top view structure of a display panel provided by the first embodiment according to the present application.

[0023] Figure 4 is a schematic diagram of a cross-sectional structure of a pixel unit provided by a second embodiment according to the present application.

[0024] Figure 5 is a schematic diagram of a structure of a display device provided by an embodiment according to the present application. DETAILED DESCRIPTION

[0025] 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. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person skilled in the art without creative labor fall within the protection scope of the present application.

[0026] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features limited by "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0027] In the description of the present application, it is necessary to point out that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "linking" should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection or can communicate with each other; it can be directly connected, or indirectly connected through intermediate medium, or the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0028] In the present application, unless otherwise explicitly specified and limited, the "upper" or "lower" of the first feature to the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the "upper", "above" and "on" of the first feature to the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The "below", "under" and "under" of the first feature to the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0029] The following disclosure provides many different embodiments or examples for implementing different structures of the present application. In order to simplify the disclosure of the present application, the components and arrangements of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present application. In addition, the present application can repeatedly refer to numbers and / or letters in different examples, and such repetition is for the purpose of simplification and clarity, which itself does not indicate the relationship between the various embodiments and / or arrangements discussed. In addition, the present application provides examples of various specific processes and materials, but those skilled in the art can realize the application of other processes and / or the use of other materials.

[0030] With the development of display industry, in order to meet some higher needs of users in life and work, high frequency, ultra high frequency, high resolution and other display products have become the trend in the industry. However, the development of such high-end display products often faces some problems, such as insufficient display charging, poor touch performance, etc.

[0031] Specifically, the in-cell touch panel (ITP) is a display panel that integrates touch function on the substrate of liquid crystal display panel, and realizes positioning of touch operation by changing touch sensing capacitance. Such display panel has advantages such as lower cost, thinner thickness and more convenient application.

[0032] It should be noted that in some implementations, the embedded touchscreen is driven in a time-sharing manner for display and touch operation. Specifically, a frame of time is divided into a display period and a touch period. For example, during the touch period, touch scanning is enabled and display scanning is disabled. When the touch period ends and the display period begins, touch scanning is disabled and display scanning is enabled, and this process repeats. However, this driving method causes touch scanning to occupy the display scanning time, which is detrimental to improving the display refresh rate.

[0033] Therefore, the inventors of this case propose a display panel 100 with always-on driving capability. It should be noted that "always-on driving" specifically refers to enabling touch scanning in different zones of the display panel 100 at different frames. Next, in conjunction with... Figures la-lb The schematic diagram shown is an application scenario diagram of the driving method corresponding to the display panel 100 provided in the embodiment of the present invention, which is used to briefly explain the driving method of the display panel 100.

[0034] The partitioning of the display panel 100 at time T1 within a frame is as follows: Figure la As shown, the display scan of the display panel 100 is performed up to the point where... Figure la The area marked by the dotted line is divided into Region 2 and other areas into Region 1. Specifically, Region 1 and Region 2 are configured to receive signals from the data line, the touch electrode of Region 1 is enabled, and the touch electrode of Region 2 is disabled.

[0035] The partitioning of the display panel 100 at time T2 within a frame is as follows: Figure lb As shown, comparison Figure la and Figure lb It can be seen that, compared to time T1, the position of the display panel 100 during the display scan at time T2 has shifted downwards. Correspondingly, the position of region 2 has also shifted downwards at this time. Furthermore, at this time, regions 1 and 2 are still able to receive signals from the data line 120 normally, the touch electrode of region 1 is enabled, and the touch electrode of region 2 is disabled, until the display scan of all times within a frame is completed.

[0036] It should be noted that, through further research by the inventors of this case, it was discovered that, in the aforementioned region 1, each pixel unit 110 of the display panel 100 can normally receive signals from the data line 120, and the touch electrodes therein are also in an enabled state. The touch electrodes and the data line 120 will interfere with each other, thereby affecting the reliability of signal transmission in the display panel 100.

[0037] Next, please refer to Figure 2 and Figure 3 ,in,Figure 2 and Figure 3 The cross-sectional structure diagram and the top view structure diagram of the pixel unit 110 and the display panel 100 according to the first embodiment of the present application are shown respectively, from which the components of the first embodiment of the present application and the relative position relationship between the components can be seen directly.

[0038] As shown in Figure 2 and Figure 3 , the display panel 100 at least includes a plurality of pixel units 110, a plurality of data lines 120 and a plurality of shielding lines 130, next, the components in the display panel 100 are described in detail in combination with Figure 2 and Figure 3 .

[0039] Each pixel unit 110 at least includes a multiplexing electrode 111, the multiplexing electrode 111 is configured to sense the touch operation of the user, that is, the multiplexing electrode 111 can work as the touch electrode described above.

[0040] Each data line 120 extends along the first direction X1, and each data line 120 is coupled to a plurality of pixel units 110 arranged along the first direction X1, further, the data line 120 is disposed in a layer different from the multiplexing electrode 111.

[0041] Each shielding line 130 is disposed between the corresponding data line 120 and the multiplexing electrode 111, specifically, each shielding line 130 extends along the first direction X1 and is located directly above the corresponding data line 120.

[0042] It should be noted that the present inventors set the shielding line 130 between the multiplexing electrode 111 and the data line 120, so that when the multiplexing electrode 111 in a certain pixel unit 110 is in an enabled state and the pixel unit 110 can also normally receive the signal on the data line 120 coupled to it, the shielding line 130 can effectively avoid the mutual interference of the signals on the multiplexing electrode 111 and the data line 120, and improve the reliability of signal transmission in the display panel 100.

[0043] Specifically, the above-mentioned shielding line 130 is used to shield the vertical electric field lines between the multiplexing electrode 111 and the data line 120.

[0044] Further, the inventor has further found that if the potential of each shielding line 130 is configured as floating, when the data line 120 below has a certain voltage, the potential of the shielding line 130 will be pulled up, thereby further affecting the potential of the multiplexing electrode 111. Therefore, in the embodiment of the present application, the inventor sets the potential of each shielding line 130 to a preset potential to stabilize the potential of the data line 120 and the multiplexing electrode 111. Specifically, in the embodiment of the present application, the size of the preset potential is not limited.

[0045] Further, please refer to Figure 2 and Figure 3 , the data line 120 has a first line width D1 in a second direction X2 perpendicular to the first direction X1, and the shielding line 130 has a second line width D2 in the second direction X2. In order to ensure the shielding effect of the shielding line 130, the first line width D1 needs to be not greater than the second line width D2. In the embodiment of the present application, the first line width D1 is less than the second line width D2.

[0046] Further, please refer to Figure 2 and Figure 3 , in the embodiment of the present application, the display panel 100 further includes a plurality of touch wires 140, the touch wires 140 extend along the first direction X1, and each touch wire 140 is coupled to the multiplexing electrode 111 in the pixel unit 110 arranged along the first direction X1.

[0047] It should be noted that when the user performs a touch operation on the display panel 100, due to the human body electric field, a coupling capacitance will be formed between the user (specifically, the user's finger) and the multiplexing electrode 111 because of the pressure difference, thereby causing the change of the electrical signal on the multiplexing electrode 111. At the same time, the above change is fed back to the processor of the display panel 100 through the touch wire 140, so that the processor can locate the above touch operation.

[0048] Specifically, in the embodiment of the present application, the touch wire 140 is arranged in the same layer as the data line 120, that is, the touch wire 140 and the data line 120 are formed in the same process.

[0049] Further, please refer to Figure 2 , for example Figure 2As shown, in the embodiment of the present application, due to the limitation of the etching process, the multiplexing electrode 111 cannot be directly coupled with the touch wire 140. In order to avoid the disconnection of the multiplexing electrode 111 and the touch wire 140 during the coupling process, a first bridge structure 150 is further arranged in each pixel unit 110. The first bridge structure 150 is arranged in the same layer as the shielding line 130, that is, the first bridge structure 150 and the shielding line 130 are formed in the same process, and the touch wire 140 is coupled with each multiplexing electrode 111 through the corresponding first bridge structure 150.

[0050] Further, please continue to refer to Figure 2 , each pixel unit 110 further includes a pixel electrode 160, a second bridge structure 170 and a drain structure 1. The pixel electrode 160 is coupled with the drain structure 1 through the second bridge structure 170, and the second bridge structure 170 is arranged in the same layer as the shielding line 130, that is, in the embodiment of the present application, the first bridge structure 150, the second bridge structure 170 and the shielding line 130 are formed in the same process.

[0051] It should be noted that in the embodiment of the present application, the multiplexing electrode 111 in each pixel unit 110 is also configured to receive a common voltage to drive each pixel unit 110 to display in cooperation with the pixel electrode 160. Therefore, in the embodiment of the present application, the pixel electrode 160 and the multiplexing electrode 111 are arranged in different layers.

[0052] Further, please continue to refer to Figure 2 , in the embodiment of the present application, the pixel electrode 160 is also used to shield the lateral bypass electric field line between the multiplexing electrode 111 and the data line 120. Therefore, as Figure 2 shown, the inventors set the projection of the pixel electrode 160 on the thickness direction Y of the display panel 100 to have an overlapping part with the projection of the shielding line 130 on the thickness direction Y, so as to ensure the shielding effect of the pixel electrode 160 on the above-mentioned lateral bypass electric field line.

[0053] It should be noted that the above-mentioned first bridge structure 150 is also used to avoid the mutual interference of the touch wire 140 and the signal on the pixel electrode 160 when the display panel 100 is configured to be driven in full time.

[0054] Further, please continue to refer to Figure 2In the embodiment of the present application, each pixel unit 110 further comprises a source structure 2 disposed in the same layer as the drain structure 1, and the source structure 2 is coupled with the data line 120. Further, above the drain structure 1 and the source structure 2, a gate insulation layer 5 (GI) and a gate structure 4 are sequentially disposed. Specifically, the drain structure 1, the source structure 2 and the gate structure 4 are used to constitute the driving circuit of each pixel unit 110, and in the figure, their number and position are only for example and are not limited thereto.

[0055] Further, please continue to refer to Figure 2 In the embodiment of the present application, the display panel 100 further comprises a substrate 190 and a light shielding component 180 located in the light shielding layer, wherein each component in the display panel 100 is formed from the substrate 190, and the light shielding component 180 is located below the drain structure 1 and is used to prevent ambient light from entering the display panel 100 to affect the display of the display panel 100.

[0056] Further, please continue to refer to Figure 2 In the embodiment of the present application, the display panel 100 further comprises a drain lead-out structure 3 disposed in the same layer as the data line 120 and the touch wire 140, wherein the drain structure 1 described above is coupled with the pixel electrode 160 through the drain lead-out structure 3 and the second bridge structure 170.

[0057] Further, please continue to refer to Figure 2 In the embodiment of the present application, the display panel further comprises an inter layer dielectric layer 6 (ILD), a first planarization layer 7, a second planarization layer 8 and a passivation layer 9, wherein the inter layer dielectric layer 6 is disposed on the gate structure 4, used to electrically isolate the gate structure 4 from the data line 120 and the touch wire 140, the first planarization layer 7 is disposed on the data line 120 and the touch wire 140, used to electrically isolate the data line 120 and the touch wire 140 from the shielding line 130, the second planarization layer 8 is disposed on the shielding line 130, used to electrically isolate the pixel electrode 160 from the shielding line 130, and the passivation layer 9 is disposed on the pixel electrode 160, used to electrically isolate the pixel electrode 160 from the multiplex electrode 111.

[0058] It should be noted that the present inventors have further found that the second planarization layer 8 can reduce the capacitance between the shielding line 130 and the multiplex electrode 111, so as to shorten the charging time (TP Loading) required in the process of positioning the touch operation. Further, the double-layer planarization layer, i.e., the first planarization layer 7 and the second planarization layer 8, can reduce the capacitance between the data line 120 and the pixel electrode 160, so as to improve problems such as crosstalk.

[0059] Further, please continue to refer to Figure 3 As shown in Figure 3 The display panel 100 further includes a plurality of scan lines SCAN, each of which is coupled to the gate structure 4 of a plurality of pixel units 110 arranged along the second direction X2.

[0060] According to the foregoing, the first embodiment of the present application provides a display panel 100, which at least includes a plurality of pixel units 110, a plurality of data lines 120, and a plurality of shielding lines 130, wherein each pixel unit 110 at least includes a multiplexing electrode 111 configured to sense a touch operation of a user, each data line 120 extends along the first direction X1, and each data line 120 is coupled to a plurality of pixel units 110 arranged along the first direction X1, further, the data line 120 is disposed in a layer different from the multiplexing electrode 111, and each shielding line 130 is disposed between the corresponding data line 120 and the multiplexing electrode 111, specifically, each shielding line 130 extends along the first direction X1 and is located directly above the corresponding data line 120, by disposing the shielding line 130 between the multiplexing electrode 111 configured to sense the touch operation and the data line 120, the present application effectively avoids the mutual interference between the multiplexing electrode 111 and the data line 120, and improves the reliability of signal transmission in the display panel 100.

[0061] Please refer to Figure 4 , Figure 4 The cross-sectional structure diagram of the pixel unit 210 according to the second embodiment of the present application is shown, from which the components of the second embodiment of the present application and the relative positional relationship of the components can be seen directly.

[0062] Different from the first embodiment described above, in the present embodiment, the data line 220 is disposed in the same layer as the light shielding structure 280, and the touch control trace 240 is disposed in the same layer as the shielding line 230.

[0063] It should be noted that, compared with the first embodiment described above, the setting mode of the present embodiment uses the existing film layer structure to dispose the shielding line 230 (i.e., the touch control trace 240 and the shielding line 230 are disposed in the same layer without adding a film layer for disposing the shielding line 230), which on the one hand can reduce the overall thickness of the display panel, and on the other hand also reduces the process cost of the display panel.

[0064] Further, in the present embodiment, the source electrode lead-out structure 250 is also disposed in the same layer as the touch control trace 240 and the shielding line 230, which is used to couple the source structure 2 and the data line 220.

[0065] Further, in the present embodiment, the pixel electrode 260, the multiplexing electrode 211 and the substrate 290 have the same functions and are disposed in the same positions as the pixel electrode 160, the multiplexing electrode 111 and the substrate 190 in the first embodiment described above, and thus a detailed description thereof will not be repeated.

[0066] Referring to Figure 5 , Figure 5 A structural diagram of a display device 500 according to an embodiment of the present application is shown in FIG. 5. As can be seen from FIG. 5, the components of the display device 500 according to the embodiment of the present application and the relative positional relationship between the components can be intuitively understood.

[0067] As Figure 5 shown in FIG. 5, the display device 500 includes a display panel 510. The display panel 510 can include a plurality of pixel units 110 as described above in the first embodiment, or can include a plurality of pixel units 210 as described above in the second embodiment.

[0068] In addition to the above embodiments, the present application can have other embodiments. Any technical solutions formed by equivalent replacement or equivalent substitution fall within the protection scope of the present application.

[0069] In summary, although the preferred embodiments of the present application have been disclosed as above, the above preferred embodiments are not intended to limit the present application. Any modifications and improvements made by those skilled in the art without departing from the spirit and scope of the present application shall fall within the protection scope of the present application.

Claims

1. A display panel, characterized by, The display panel comprises at least: a plurality of pixel units, each of the pixel units comprising at least a multiplexing electrode configured to sense a touch operation; a plurality of data lines, each of the data lines extending along a first direction and coupled to a plurality of the pixel units arranged along the first direction, and the data lines being disposed in a layer different from the multiplexing electrodes; and a plurality of shielding lines disposed between the data lines and the multiplexing electrodes, and each of the shielding lines extending along the first direction and located directly above a corresponding data line; a plurality of touch wires extending along the first direction and coupled to the multiplexing electrodes in the pixel units arranged along the first direction, the touch wires being disposed in a same layer as the data lines; wherein each of the pixel units further comprises a pixel electrode, and the pixel electrode is disposed in a layer different from the multiplexing electrode, the multiplexing electrode being disposed above the pixel electrode, the multiplexing electrode in each of the pixel units is further configured to receive a common voltage to drive each of the pixel units to display in cooperation with the pixel electrode; each of the pixel units further comprises a first bridge structure, the first bridge structure being disposed in a same layer as the shielding lines, and the touch wires and each of the multiplexing electrodes are coupled through a corresponding first bridge structure; the display panel comprises a region 1 and a region 2, the region 2 is a region for display scanning, the region 1 is a region other than the region 2, the multiplexing electrodes in the region 2 are in a non-enabled state, the multiplexing electrodes in the region 1 are in an enabled state, and the pixel units in the region 1 and the region 2 can normally receive signals on the data lines.

2. The display panel of claim 1, wherein, Each of the shielding lines is configured to have a preset potential.

3. The display panel of claim 1, wherein, The data lines have a first line width in a second direction perpendicular to the first direction, and the shielding lines have a second line width in the second direction, wherein the first line width is not greater than the second line width.

4. The display panel of claim 1, wherein, Each of the pixel units further comprises a second bridge structure and a drain structure, the pixel electrode and the drain structure are coupled through the second bridge structure, and the second bridge structure is disposed in a same layer as the shielding lines.

5. The display panel of claim 4, wherein, The display panel further comprises a light shielding structure, the light shielding structure is located below the drain structure, the data lines are disposed in a same layer as the light shielding structure, and the touch wires are disposed in a same layer as the shielding lines.

6. The display panel of claim 4, wherein, A projection of the pixel electrode in a thickness direction of the display panel and a projection of the shielding line in the thickness direction have an overlapping portion.

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