Display panel, preparation method thereof and display device
By introducing auxiliary traces on the same layer into the display panel, the problem of poor moiré display caused by insufficient number of touch traces was solved, and high-quality display of the display panel was achieved.
Patent Information
- Application Number
- CN202210647948.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2022-06-08
- Publication Date
- 2026-02-27
- Estimated Expiration
- 2042-06-08
Smart Images

Figure CN115237285B_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of display, in particular to a display panel, a preparation method thereof and a display device. BACKGROUND
[0002] With the development of display technology, touch screens are increasingly widely used in people's lives, and smart terminals such as smart phones are increasingly developing towards thinness and full screen. In order to meet the requirements of the trend of development, In cell touch technology has gradually become the mainstream technology of display touch.
[0003] In a conventional In cell touch display panel, the touch wires pass through the corresponding column of pixels along the column direction and are arranged in the middle of the column of pixels, and the number of touch wires is less than the number of columns of pixels, so that some columns of pixels are provided with touch wires, and some columns of pixels are not provided with touch wires. In addition, the touch wires are usually formed of metal materials and have high reflectivity, that is, some pixels are provided with touch wires that cause reflection, and some pixels are not provided with touch wires that cause reflection. This pixel design causes moire display defects on the entire surface of the display panel, affecting the actual quality of the display panel. SUMMARY
[0004] The present application provides a display panel, a preparation method thereof and a display device, which can solve the problem of moire display defects.
[0005] To solve the above problems, in a first aspect, the present application provides a display panel, which comprises a plurality of display sub-regions arranged along a first direction, each display sub-region comprising a plurality of sub-pixel regions arranged along a second direction, and the plurality of display sub-regions comprising a plurality of first display sub-regions and a plurality of second display sub-regions, the display panel comprising:
[0006] a substrate;
[0007] a display functional layer arranged on the substrate;
[0008] a touch functional layer embedded in the display functional layer, comprising a touch wire layer, the touch wire layer comprising a plurality of touch wires arranged along the second direction, and one first display sub-region being provided with one touch wire;
[0009] The touch wire layer further comprises a plurality of auxiliary wires arranged along the second direction, one second display sub-region is provided with one auxiliary wire, and the distance between the auxiliary wire and the edge of the corresponding second display sub-region along the first direction is equal to the distance between the touch wire and the edge of the corresponding first display sub-region along the first direction.
[0010] In the display panel provided by the embodiment of the present application, the width of the auxiliary wire along the first direction is equal to the width of the touch wire along the first direction.
[0011] In the display panel provided by the embodiment of the present application, the display function layer comprises a source-drain metal layer, and the source-drain metal layer comprises the touch wire layer.
[0012] In the display panel provided by the embodiment of the present application, the display function layer comprises an electrode layer arranged on the side of the source-drain metal layer away from the substrate, the electrode layer comprises a plurality of electrodes arranged in the plurality of sub-pixel regions, the electrode comprises a trunk electrode, the trunk electrode comprises a first trunk electrode arranged along the first direction and a second trunk electrode arranged along the second direction, and the first trunk electrode and the second trunk electrode are arranged in intersection.
[0013] Among them, one of the touch wires is arranged in correspondence with the second trunk electrode of each of the electrodes in a corresponding one of the first display sub-regions, and one of the auxiliary wires is arranged in correspondence with the second trunk electrode of each of the electrodes in a corresponding one of the second display sub-regions.
[0014] In the display panel provided by the embodiment of the present application, the width of the touch wire along the first direction is less than the width of the second trunk electrode along the first direction, and the width of the auxiliary wire along the first direction is less than the width of the second trunk electrode along the first direction.
[0015] In the display panel provided by the embodiment of the present application, the display function layer further comprises a gate metal layer arranged on the side of the source-drain metal layer close to the substrate, and the gate metal layer comprises a plurality of touch electrodes, any one of the touch electrodes is electrically connected to a corresponding one of the touch wires.
[0016] In the display panel provided by the embodiment of the present application, the electrode layer comprises a plurality of touch bridge portions arranged in correspondence with a plurality of the touch wires, the display panel further comprises a first insulating layer arranged between the gate metal layer and the source-drain metal layer, and a second insulating layer arranged between the source-drain metal layer and the electrode layer, one end of the touch bridge portion is electrically connected to one of the touch wires through a first via hole arranged in the second insulating layer, and the other end is electrically connected to a corresponding one of the touch electrodes through a second via hole arranged in the first insulating layer and the second insulating layer.
[0017] In the display panel provided by the embodiment of the present application, the orthographic projection of one of the touch electrodes on the substrate covers the orthographic projection of a plurality of adjacent trunk electrodes on the substrate.
[0018] In a second aspect, the present application further provides a method for manufacturing a display panel, the display panel comprising a plurality of display sub-areas arranged along a first direction, each of the display sub-areas comprising a plurality of sub-pixel areas arranged along a second direction, the plurality of display sub-areas comprising a plurality of first display sub-areas and a plurality of second display sub-areas, the method comprising the following steps:
[0019] A substrate is provided, and a display functional layer and a touch functional layer are formed on the substrate, the touch functional layer being embedded in the display functional layer, the touch functional layer comprising a touch trace layer, the touch trace layer comprising a plurality of touch traces arranged along the second direction and a plurality of auxiliary traces arranged along the second direction, one of the touch traces being arranged in one of the first display sub-areas, one of the auxiliary traces being arranged in one of the second display sub-areas, and a distance between the auxiliary trace and an edge of the corresponding second display sub-area along the first direction being equal to a distance between the touch trace and an edge of the corresponding first display sub-area along the first direction.
[0020] In a third aspect, the present application further provides a display device, the display device comprising the display panel.
[0021] Beneficial effects: The display panel, the manufacturing method thereof and the display device provided by the embodiments of the present application comprise a plurality of display sub-areas arranged along a first direction, each of the display sub-areas comprising a plurality of sub-pixel areas arranged along a second direction, the plurality of display sub-areas comprising a plurality of first display sub-areas and a plurality of second display sub-areas, one of the touch traces being arranged in one of the first display sub-areas, one of the auxiliary traces being arranged in one of the second display sub-areas, and a distance between the auxiliary trace and an edge of the corresponding second display sub-area along the first direction being equal to a distance between the touch trace and an edge of the corresponding first display sub-area along the first direction, wherein the auxiliary trace arranged in the second display sub-area is arranged in the same position as the touch trace arranged in the first display sub-area, so that the difference between the overall reflectivity of the first display sub-area and the overall reflectivity of the second display sub-area is greatly reduced, thereby eliminating the moire bad phenomenon during display. BRIEF DESCRIPTION OF DRAWINGS
[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative effort.
[0023] Figure 1is a plane structure schematic diagram of a display panel provided by an embodiment of the present application;
[0024] Figure 2 is a cross-sectional structure schematic diagram of a display panel provided by an embodiment of the present application;
[0025] Figure 3 is a plane structure schematic diagram of another display panel provided by an embodiment of the present application;
[0026] Figure 4 is Figure 3 is an enlarged structure schematic diagram of an S1 region in the middle;
[0027] Figure 5 is a cross-sectional structure schematic diagram of another display panel provided by an embodiment of the present application;
[0028] Figures 6a-6d is a flowchart of a preparation method of a display panel provided by an embodiment of the present application. DETAILED DESCRIPTION
[0029] 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 of ordinary skill in the art without creative work fall within the protection scope of the present application.
[0030] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" 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 on 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.
[0031] In this application, the word "exemplary" is used to mean "serving as an example, instance, or illustration." Any implementation described as "exemplary" is not necessarily to be construed as preferred or advantageous over other implementations. The following description is presented to enable any person skilled in the art to make and use the application. Details are set forth in the following description for purpose of explanation. It should be appreciated that one of ordinary skill in the art will readily recognize that the application can be practiced without the use of these specific details. In other instances, well-known structures and processes have not been described in detail in order to avoid obscuring the description of the application. Thus, the present application is not intended to be limited by the embodiments shown, but is to be accorded with the widest scope consistent with the principles and features disclosed herein.
[0032] The display panel provided by the embodiments of the present application is described in detail below in combination with Figure 1 the schematic plan view of the display panel shown in the drawings.
[0033] Specifically, the display panel includes a plurality of display sub-areas A arranged along a first direction X, each of the display sub-areas A includes a plurality of sub-pixel areas P arranged along a second direction Y, the plurality of display sub-areas A includes a plurality of first display sub-areas A1 and a plurality of second display sub-areas A2, the display panel includes a substrate 100 and a display functional layer 200 disposed on the substrate 100, and further, a touch functional layer 300 is embedded in the display functional layer 200.
[0034] The touch functional layer 300 includes a touch trace layer 310, and the touch trace layer 310 includes a plurality of touch traces L1 extending along the second direction Y. Since the number of the touch traces L1 is less than the number of the display sub-areas A, only part of the display sub-areas A are provided with the touch traces L1. The display sub-areas A provided with the touch traces L1 are defined as the first display sub-areas A1, and the display sub-areas A not provided with the touch traces L1 are defined as the second display sub-areas A2. Since the touch traces L1 are usually made of metal material, the touch traces L1 will form a strong reflection effect, so that the overall reflectivity of the first display sub-areas A1 provided with the touch traces L1 is greater than that of the second display sub-areas A2. Therefore, when the display panel displays, the brightness of the first display sub-areas A1 is greater than that of the second display sub-areas A2, and macroscopically, the alternating bright and dark stripes, i.e., the moire bad phenomenon, appears.
[0035] In the embodiment, in order to improve the moire badness, the touch wire layer 310 further comprises a plurality of auxiliary wires L2 which are arranged in the same layer and made of the same material as the touch wires L1, and the auxiliary wires L2 are arranged along the second direction Y, i.e. the auxiliary wires L2 are arranged in parallel with the touch wires L1, one second display sub-area A2 is provided with one auxiliary wire L2, and the distance D2 between the auxiliary wire L2 and the edge of the corresponding second display sub-area A2 along the first direction X is equal to the distance D1 between the touch wire L1 and the edge of the corresponding first display sub-area A1 along the first direction X;
[0036] In this way, the auxiliary wires L2 arranged in the same layer as the touch wires L1 are added in the second display sub-area A2, and the auxiliary wires L2 are arranged in the same position as the touch wires L1 in the first display sub-area A1, so that the difference between the overall reflectivity of the first display sub-area A1 and the overall reflectivity of the second display sub-area A2 is greatly reduced, thereby weakening or even eliminating the moire badness in display.
[0037] In the embodiment, the auxiliary wires L2 are only wires arranged for improving the moire badness, and are not electrically connected with other structures, nor are used for transmitting any data signal.
[0038] The display function layer 200 comprises a plurality of display function sub-layers for realizing display function, and usually specifically comprises a thin film transistor layer and a light emitting function layer arranged on the thin film transistor layer.
[0039] The touch function layer 300 is embedded in the display function layer 200, which means that the related structures in the touch function layer 300, such as touch wires and touch electrodes, are embedded between the plurality of display function sub-layers or arranged in the same layer as part of the display function sub-layers.
[0040] The display panel comprises a plurality of data lines L3 arranged along the second direction Y and a plurality of scan lines L4 arranged along the first direction X, the first direction X and the second direction Y intersect, Figure 1 The area defined by the intersection of the plurality of data lines L3 and the plurality of scan lines L4 is the sub-pixel area P.
[0041] In some embodiments, on the basis that the auxiliary wire L2 is arranged in the same layer and with the same material as the touch wire L1 and in the same position in the corresponding display sub-area A, the width of the auxiliary wire L2 along the first direction X is further set to be the same as the width of the touch wire L1 along the first direction X, that is, the reflectivity of the touch wire L1 and the auxiliary wire L2 is made as close as possible, and then the overall reflectivity of the first display sub-area A1 and the second display sub-area A2 is made as close as possible, which is more conducive to improving the moire badness of the display panel.
[0042] It can be understood that the overall reflectivity of the first display sub-area A1 and the second display sub-area A2 does not need to be exactly the same to avoid moire badness, but only needs to be reduced to a certain threshold, so that the difference in brightness between the first display sub-area A1 and the second display sub-area A2 cannot be distinguished by the human eye.
[0043] In some embodiments, please continue to refer to Figure 2 The display functional layer 200 includes a source-drain metal layer 240, and the source-drain metal layer 240 includes the data line L3, a source electrode 241, a drain electrode 242, and the touch wire layer 310, that is, the source-drain metal layer 240 and the touch wire layer 310 are formed at the same time by using one process, so as to simplify the preparation process of the display panel.
[0044] The source electrode 241 and the drain electrode 242 are arranged at two ends of the active layer 230.
[0045] In some embodiments, please refer to Figure 2 and Figure 3 The display functional layer 200 includes an electrode layer 260 arranged on the side of the source-drain metal layer 240 away from the substrate 100, and the electrode layer 260 includes a plurality of electrodes 261 arranged in the plurality of sub-pixel areas P. The specific structure of the electrode 261 can be understood by referring to the enlarged structure schematic view of the S1 area shown in Figure 4 Figure 3 The electrode 261 includes a main electrode, and the main electrode includes a first main electrode 2611 arranged along the first direction X and a second main electrode 2612 arranged along the second direction Y. The first main electrode 2611 and the second main electrode 2612 are arranged to intersect, and the sub-pixel area P is divided into four domains. Each domain is provided with a branch electrode 2613.
[0046] Specifically, the region where the second trunk electrode 2612 is arranged is not used for light-emitting display, and the extension direction of the second trunk electrode 2612 is the same as the extension direction of the touch wire L1 and the auxiliary wire L2, so the touch wire L1 and the auxiliary wire L2 can be arranged on the lower side of the second trunk electrode 2612 correspondingly.
[0047] Specifically, one touch wire L1 is arranged correspondingly to the second trunk electrode 2612 of each electrode 261 in a corresponding first display sub-region A1, and one auxiliary wire L2 is arranged correspondingly to the second trunk electrode 2612 of each electrode 261 in a corresponding second display sub-region A2.
[0048] Further, in some embodiments, the width of the touch wire L1 along the first direction X is smaller than the width of the second trunk electrode 2612 along the first direction X, and the width of the auxiliary wire L2 along the first direction X is smaller than the width of the second trunk electrode 2612 along the first direction X, so as to avoid the touch wire L1 or the auxiliary wire L2 causing the aperture ratio to decrease.
[0049] It is to be further noted that, in addition to the four-domain structure described above, the electrode 261 can also be a two-domain or an eight-domain structure, and the touch wire L1 and the auxiliary wire L2 can be arranged in the same way, which will not be described here again.
[0050] In some embodiments, please continue to refer to Figure 2 The display functional layer further includes a gate metal layer 210 arranged on the side of the source / drain metal 240 close to the substrate 100, and the gate metal layer 210 includes a plurality of gates 211 and a plurality of touch electrodes 320. Any touch electrode 320 is electrically connected to a corresponding touch wire L1, that is, the touch electrode 320 and the gate metal layer 210 are arranged in the same layer, so as to embed the touch electrode 320 in the display functional layer 200 without increasing the preparation process of the display panel.
[0051] Specifically, the touch electrode is arranged correspondingly to the trunk electrode region, so that the touch electrode can also serve as a light shielding layer arranged on the side of the trunk electrode away from the light-emitting surface. Typically, one touch electrode includes a plurality of touch sub-electrodes arranged correspondingly on the lower side of a plurality of trunk electrodes. A plurality of cross-shaped touch sub-electrodes are electrically connected to form one touch electrode, that is, the orthographic projection of one touch electrode on the substrate covers the orthographic projection of a plurality of corresponding adjacent trunk electrodes on the substrate.
[0052] In some embodiments, please refer to Figure 5The electrode layer 260 includes a plurality of touch bridge portions 262 corresponding to a plurality of touch wires L1. The display panel further includes a first insulating layer 220 disposed between the gate metal layer 210 and the source / drain metal layer 240, and a second insulating layer 250 disposed between the source / drain metal layer 240 and the electrode layer 260. One end of the touch bridge portion 262 is electrically connected to one touch wire L1 through a first via hole in the second insulating layer 250, and the other end is electrically connected to a corresponding touch electrode 320 through a second via hole in the first and second insulating layers 220 and 250, so as to electrically connect the touch electrode 320 to the corresponding touch wire L1. In this embodiment, the first and second via holes can be formed in one process with the via holes connected to the electrode 261 and the drain 242, without increasing the manufacturing process of the display panel.
[0053] It should be noted that only the above structure is described in the above display panel embodiment. It can be understood that, in addition to the above structure, the display panel of the embodiment of the present application can also include any other necessary structure as needed, which is not limited here.
[0054] An embodiment of the present application also provides a manufacturing method of a display panel. The display panel includes a plurality of display sub-areas arranged along a first direction. Each display sub-area includes a plurality of sub-pixel areas arranged along a second direction. The plurality of display sub-areas include a plurality of first display sub-areas and a plurality of second display sub-areas. The manufacturing method includes the following steps.
[0055] A substrate is provided, and a display functional layer and a touch functional layer are formed on the substrate. The touch functional layer is embedded in the display functional layer. The touch functional layer includes a touch wire layer. The touch wire layer includes a plurality of touch wires arranged along the second direction and a plurality of auxiliary wires arranged along the second direction. One first display sub-area is provided with one touch wire, and one second display sub-area is provided with one auxiliary wire. The distance between the auxiliary wire and the edge of the corresponding second display sub-area along the first direction is equal to the distance between the touch wire and the edge of the corresponding first display sub-area along the first direction.
[0056] The following is described in combination Figures 6a-6d The manufacturing method specifically includes the following steps.
[0057] Please refer to Figure 6a A substrate 100 is provided. A gate metal layer 210 is formed on the substrate 100. The gate metal layer 210 includes a gate 211 and a touch electrode 320.
[0058] Please refer toFigure 6b A first insulating layer 220 is formed on the substrate 100 and the gate metal layer 210, and an active layer 230 is formed on the first insulating layer 220;
[0059] Referring to Figure 6c A source-drain metal layer 240 is formed on the first insulating layer 220 and the active layer 230, and the source-drain metal layer 240 includes a source 241, a drain 242, a touch wire L1, and an auxiliary wire L2;
[0060] Referring to Figure 6d A second insulating layer 250 and an electrode layer 260 are formed on the first insulating layer 220 and the source-drain metal layer 240, and the electrode layer 260 includes an electrode 261 and a touch bridge 262. One end of the touch bridge 262 is electrically connected to one of the touch wires L1 through a first via hole formed in the second insulating layer 250, and the other end of the touch bridge 262 is electrically connected to a corresponding one of the touch electrodes 320 through a second via hole formed in the first insulating layer 220 and the second insulating layer 250.
[0061] An embodiment of the present application further provides a display device, and the display device includes the display panel provided by the above embodiment, and the display device includes but is not limited to a mobile phone, a notebook computer, a smart watch, and a television set.
[0062] The display panel provided by the embodiment of the present application, the preparation method thereof, and the display device are described in detail above, and the principle and the implementation manner of the present application are described by using specific examples in this paper. The above embodiment is only used for helping to understand the method of the present application and the core idea thereof. Meanwhile, for those skilled in the art, according to the idea of the present application, the specific implementation manner and the application range will be changed, and the above description should not be understood as the limitation of the present application.
Claims
1. A display panel, characterized by, The display panel comprises a plurality of display sub-areas arranged along a first direction, each of the display sub-areas comprises a plurality of sub-pixel areas arranged along a second direction, the plurality of display sub-areas comprises a plurality of first display sub-areas and a plurality of second display sub-areas, and the display panel comprises: a substrate; a display functional layer disposed on the substrate; a touch functional layer embedded in the display functional layer, comprising a touch trace layer, the touch trace layer comprises a plurality of touch traces arranged along the second direction, and one of the touch traces is arranged in one of the first display sub-areas; wherein the touch trace layer further comprises a plurality of auxiliary traces arranged along the second direction, one of the auxiliary traces is arranged in one of the second display sub-areas, and the distance between the auxiliary trace and the edge of the corresponding second display sub-area along the first direction is equal to the distance between the touch trace and the edge of the corresponding first display sub-area along the first direction; wherein the auxiliary trace and the touch trace are made of the same material, and the auxiliary trace is not electrically connected to other structures.
2. The display panel of claim 1, wherein, The width of the auxiliary trace along the first direction is equal to the width of the touch trace along the first direction.
3. The display panel of claim 1, wherein, The display functional layer comprises a source-drain metal layer, and the source-drain metal layer comprises the touch trace layer.
4. The display panel of claim 3, wherein, The display functional layer comprises an electrode layer disposed on a side of the source-drain metal layer away from the substrate, the electrode layer comprises a plurality of electrodes arranged in the plurality of sub-pixel areas, the electrodes comprise a main electrode, the main electrode comprises a first main electrode arranged along the first direction and a second main electrode arranged along the second direction, and the first main electrode and the second main electrode are arranged at an intersection; wherein one of the touch traces is arranged corresponding to the second main electrode of each of the electrodes in one of the first display sub-areas, and one of the auxiliary traces is arranged corresponding to the second main electrode of each of the electrodes in one of the second display sub-areas.
5. The display panel of claim 4, wherein, The width of the touch trace along the first direction is less than the width of the second main electrode along the first direction, and the width of the auxiliary trace along the first direction is less than the width of the second main electrode along the first direction.
6. The display panel of claim 4, wherein, The display functional layer further comprises a gate metal layer disposed on a side of the source-drain metal layer close to the substrate, the gate metal layer comprises a plurality of touch electrodes, and any one of the touch electrodes is electrically connected to one of the touch traces.
7. The display panel of claim 6, wherein, The electrode layer comprises a plurality of touch bridge portions arranged corresponding to the plurality of touch traces, the display panel further comprises a first insulating layer disposed between the gate metal layer and the source-drain metal layer, and a second insulating layer disposed between the source-drain metal layer and the electrode layer, one end of the touch bridge portion is electrically connected to one of the touch traces through a first via hole disposed in the second insulating layer, and the other end is electrically connected to one of the touch electrodes through a second via hole disposed in the first insulating layer and the second insulating layer.
8. The display panel of claim 6, wherein, A projection of the touch electrode on the substrate covers a projection of the corresponding plurality of adjacent stem electrodes on the substrate.
9. A method for manufacturing a display panel, characterized by, The display panel comprises a plurality of display sub-areas arranged along a first direction, each of the display sub-areas comprises a plurality of sub-pixel areas arranged along a second direction, the plurality of display sub-areas comprises a plurality of first display sub-areas and a plurality of second display sub-areas, and the preparation method comprises the following steps: A substrate is provided, and a display function layer and a touch function layer are formed on the substrate, the touch function layer is embedded in the display function layer, the touch function layer comprises a touch trace layer, the touch trace layer comprises a plurality of touch traces arranged along the second direction and a plurality of auxiliary traces arranged along the second direction, one of the touch traces is arranged in one of the first display sub-areas, one of the auxiliary traces is arranged in one of the second display sub-areas, and the distance between the auxiliary trace and the edge of the corresponding second display sub-area along the first direction is equal to the distance between the touch trace and the edge of the corresponding first display sub-area along the first direction. The auxiliary trace and the touch trace are made of the same material, and the auxiliary trace is not electrically connected to other structures.
10. A display device, characterized by comprising: The display device comprises the display panel of any one of claims 1-8.
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