Display panel and display apparatus
The display panel design addresses interference issues by using a magnetic isolation layer and strategic electrode arrangement to enhance input detection precision with electromagnetic induction and capacitive touch electrodes.
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- BOE TECHNOLOGY GROUP CO LTD
- Filing Date
- 2024-11-13
- Publication Date
- 2026-05-21
AI Technical Summary
Existing display technologies face challenges in integrating electromagnetic induction and capacitive touch electrodes effectively, leading to interference and reduced precision in input detection.
A display panel design that includes a magnetic isolation layer to shield electromagnetic induction electrodes from external magnetic fields, with strategically arranged electromagnetic induction and touch electrodes, and a circuit board to form coils for precise input detection, minimizing interference.
Enhances the precision and effectiveness of input detection by reducing electromagnetic interference, allowing for precise interaction using electromagnetic pens and maintaining capacitive touch functionality.
Smart Images

Figure CN2024131750_21052026_PF_FP_ABST
Abstract
Description
DISPLAY PANEL AND DISPLAY APPARATUSTECHNICAL FIELD
[0001] The present invention relates to display technology, more particularly, to a display panel and a display apparatus.BACKGROUND
[0002] Display technologies have evolved significantly over recent years, driven by the increasing demand for interactive and high-performance screens across various industries. Modern display devices are now integrated into a wide range of products, from consumer electronics to industrial equipment, enhancing both user experience and operational efficiency. The integration of styluses, which allow for precise input, has further expanded the capabilities of these display panels, making them ideal for applications ranging from creative design to educational tools. These innovations continue to shape the future of human-machine interaction, contributing to the widespread adoption of display panels in diverse applications.SUMMARY
[0003] In one aspect, the present disclosure provides a display panel, comprising a base substrate; a magnetic isolation layer on the base substrate; an electromagnetic induction electrode layer on a side of the magnetic isolation layer away from the base substrate; a planarization layer or an encapsulating layer on a side of the electromagnetic induction electrode layer away from the base substrate; a first conductive layer on a side of the planarization layer or the encapsulating layer away from the base substrate; an insulating layer on a side of the first conductive layer away from the base substrate; and a second conductive layer on a side of the insulating layer away from the base substrate; wherein the electromagnetic induction electrode layer comprises a plurality of first electromagnetic induction electrodes; the first conductive layer comprises a plurality of second electromagnetic induction electrodes and a plurality of bridges; the second conductive layer comprises a plurality of first touch electrodes and a plurality of second touch electrodes; and a respective bridge connecting two adjacent first touch electrodes of the plurality of first touch electrodes.
[0004] Optionally, the display panel further comprises a support layer on a side of the magnetic isolation layer away from the base substrate; and a light emitting substrate comprising a plurality of light emitting elements on a side of the support layer away from the base substrate; wherein the display panel comprises the encapsulating layer on a side of the light emitting substrate away from the base substrate; and the planarization layer on a side of the electromagnetic induction electrode layer away from the encapsulating layer; wherein the electromagnetic induction electrode layer is on a side of the encapsulating layer away from the base substrate; and the planarization layer is on a side of the electromagnetic induction electrode layer away from the base substrate.
[0005] Optionally, the display panel further comprises a support layer on a side of the electromagnetic induction electrode layer away from the base substrate; and a light emitting substrate comprising a plurality of light emitting elements on a side of the support layer away from the base substrate; wherein the electromagnetic induction electrode layer is on a side of the support layer closer to the base substrate; and the encapsulating layer is on a side of the light emitting substrate away from the electromagnetic induction electrode layer.
[0006] Optionally, the plurality of first touch electrodes are arranged in a plurality of first columns; the plurality of first electromagnetic induction electrodes are arranged in a plurality of second columns; the plurality of first touch electrodes and the plurality of first electromagnetic induction electrodes are alternately arranged; the plurality of second touch electrodes are arranged in a plurality of first rows; the plurality of second electromagnetic induction electrodes are arranged in a plurality of second rows; and the plurality of second touch electrodes and the plurality of second electromagnetic induction electrodes are alternately arranged.
[0007] Optionally, an orthographic projection of a respective first electromagnetic induction electrode of the plurality of first electromagnetic induction electrodes on a base substrate is substantially non-overlapping with an orthographic projection of the plurality of first touch electrodes on the base substrate; and an orthographic projection of a respective first touch electrode of the plurality of first touch electrodes on the base substrate is substantially non-overlapping with an orthographic projection of the plurality of first electromagnetic induction electrodes on the base substrate.
[0008] Optionally, an orthographic projection of a respective second electromagnetic induction electrode of the plurality of second electromagnetic induction electrodes on a base substrate is substantially non-overlapping with an orthographic projection of the plurality of second touch electrodes on the base substrate; and an orthographic projection of a respective second touch electrode of the plurality of second touch electrodes on the base substrate is substantially non-overlapping with an orthographic projection of the plurality of second electromagnetic induction electrodes on the base substrate.
[0009] Optionally, the display panel further comprises a plurality of first electromagnetic induction signal lines connected to the plurality of first electromagnetic induction electrodes, respectively; and a plurality of second electromagnetic induction signal lines connected to the plurality of second electromagnetic induction electrodes, respectively; wherein the display panel comprises one or more first electromagnetic induction coils; and one or more second electromagnetic induction coils; wherein a respective first electromagnetic induction coil of the one or more first electromagnetic induction coils includes at least two first electromagnetic induction electrodes of the plurality of first electromagnetic induction electrodes and at least two first electromagnetic induction signal lines of the plurality of first electromagnetic induction signal lines; and a respective second electromagnetic induction coil of the one or more second electromagnetic induction coils includes at least two second electromagnetic induction electrodes of the plurality of second electromagnetic induction electrodes and at least two second electromagnetic induction signal lines of the plurality of second electromagnetic induction signal lines.
[0010] Optionally, the display panel further comprises a circuit board configured to select which at least two first electromagnetic induction electrodes of the plurality of first electromagnetic induction electrodes and which at least two first electromagnetic induction signal lines of the plurality of first electromagnetic induction signal lines to form a first electromagnetic induction coil of the one or more first electromagnetic induction coils; and select which at least two second electromagnetic induction electrodes of the plurality of second electromagnetic induction electrodes and which at least two second electromagnetic induction signal lines of the plurality of second electromagnetic induction signal lines to form a second electromagnetic induction coil of the one or more second electromagnetic induction coils.
[0011] Optionally, the display panel further comprises a first connecting line connecting the plurality of first electromagnetic induction electrodes; wherein a respective first electromagnetic induction coil of the one or more first electromagnetic induction coils comprises at least two first electromagnetic induction electrodes of the plurality of first electromagnetic induction electrodes, at least two first electromagnetic induction signal lines of the plurality of first electromagnetic induction signal lines, and a portion of the first connecting line; and the portion of the first connecting line, the at least two first electromagnetic induction electrodes of the plurality of first electromagnetic induction electrodes, and the at least two first electromagnetic induction signal lines of the plurality of first electromagnetic induction signal lines, form a first electromagnetic induction channel.
[0012] Optionally, a structure comprising the first connecting line and the plurality of first electromagnetic induction electrodes has a comb shape.
[0013] Optionally, the display panel further comprises a second connecting line connecting the plurality of second electromagnetic induction electrodes; wherein a respective second electromagnetic induction coil of the one or more second electromagnetic induction coils comprises at least two second electromagnetic induction electrodes of the plurality of second electromagnetic induction electrodes, at least two second electromagnetic induction signal lines of the plurality of second electromagnetic induction signal lines, and a portion of the second connecting line; and the portion of the second connecting line, the at least two second electromagnetic induction electrodes of the plurality of second electromagnetic induction electrodes, and the at least two second electromagnetic induction signal lines of the plurality of second electromagnetic induction signal lines, form a second electromagnetic induction channel.
[0014] Optionally, a structure comprising the second connecting line and the plurality of second electromagnetic induction electrodes has a comb shape.
[0015] Optionally, the display panel comprises a multi-turn winding structure of a first electromagnetic induction coil; wherein the multi-turn winding structure of the first electromagnetic induction coil comprises multiple first electromagnetic induction electrodes of the plurality of first electromagnetic induction electrodes and connecting lines connecting first electromagnetic induction electrodes of adjacent half-turns; and one end of the first electromagnetic induction coil is connected to a first pad configured to receive an electromagnetic resonance signal or a ground signal, another end of the first electromagnetic induction coil is connected to a second pad.
[0016] Optionally, the display panel comprises a multi-turn winding structure of a second electromagnetic induction coil; wherein the multi-turn winding structure of the second electromagnetic induction coil comprises multiple second electromagnetic induction electrodes of the plurality of second electromagnetic induction electrodes and connecting lines connecting second electromagnetic induction electrodes of adjacent half-turns; and one end of the second electromagnetic induction coil is connected to a third pad configured to receive an electromagnetic resonance signal or a ground signal, another end of the second electromagnetic induction coil is connected to a fourth pad.
[0017] Optionally, the display panel comprises a single-turn winding structure of a first electromagnetic induction coil; wherein the single-turn winding structure of the first electromagnetic induction coil comprises two first electromagnetic induction electrodes of the plurality of first electromagnetic induction electrodes and a connecting line connecting the two first electromagnetic induction electrodes of adjacent half-turns; and one end of the first electromagnetic induction coil is connected to a first pad configured to receive an electromagnetic resonance signal or a ground signal, another end of the first electromagnetic induction coil is connected to a second pad.
[0018] Optionally, the display panel comprises a single-turn winding structure of a second electromagnetic induction coil; wherein the single-turn winding structure of the second electromagnetic induction coil comprises two second electromagnetic induction electrodes of the plurality of second electromagnetic induction electrodes and a connecting line connecting the two second electromagnetic induction electrodes of adjacent half-turns; and one end of the second electromagnetic induction coil is connected to a third pad configured to receive an electromagnetic resonance signal or a ground signal, another end of the second electromagnetic induction coil is connected to a fourth pad.
[0019] Optionally, a touch electrode repeating unit of the display panel has a first width along a first direction and a second width along a second direction; the plurality of first touch electrodes are arranged along the first direction; the plurality of second touch electrodes are arranged along the second direction; a portion of a first electromagnetic induction electrode of the plurality of first electromagnetic induction electrodes in the touch electrode repeating unit has a third width along the first direction; a portion of a second electromagnetic induction electrode of the plurality of second electromagnetic induction electrodes in the touch electrode repeating unit has a fourth width along the second direction; the third width is in a range of one fifth of the first width to one half of the first width; and the fourth width is in a range of one fifth of the second width to one half of the second width.
[0020] Optionally, a minimum repeating unit of touch pattern has a first unit width along a first direction and a first unit length along a second direction; a minimum repeating unit of an electromagnetic induction electrode pattern has a second unit width along the first direction and a second unit length along the second direction; the minimum repeating unit of the electromagnetic induction electrode pattern has an area greater than an area of the minimum repeating unit of touch pattern; the second unit width is in a range of the first unit width to five times the first unit width; and the second unit length is in a range of the first unit length to five times the first unit length.
[0021] Optionally, the plurality of first electromagnetic induction electrodes comprise a plurality of mesh electrodes; where an orthographic projection of the plurality of first electromagnetic induction electrodes on a base substrate overlaps with an orthographic projection of the plurality of second touch electrodes on the base substrate, the plurality of first electromagnetic induction electrodes have a first mesh pattern; where the orthographic projection of the plurality of first electromagnetic induction electrodes on the base substrate is non-overlapping with the orthographic projection of the plurality of second touch electrodes on the base substrate, the plurality of first electromagnetic induction electrodes have a second mesh pattern; and the second mesh pattern has a mesh line distribution density greater than a mesh line distribution density in the first mesh pattern.
[0022] Optionally, an orthographic projection of a respective first electromagnetic induction electrode of the plurality of first electromagnetic induction electrodes on a base substrate is substantially surrounded by an orthographic projection of one or more first touch electrodes of the plurality of first touch electrodes on the base substrate; and an orthographic projection of a respective second electromagnetic induction electrode of the plurality of second electromagnetic induction electrodes on the base substrate is substantially surrounded by an orthographic projection of one or more second touch electrodes of the plurality of second touch electrodes on the base substrate.
[0023] In another aspect, the present disclosure provides a display apparatus, comprising the display panel described herein or fabricated by a method described herein, and one or more integrated circuits connected to the display panel.
[0024] BRIEF DESCRIPTION OF THE FIGURES
[0025] The following drawings are merely examples for illustrative purposes according to various disclosed embodiments and are not intended to limit the scope of the present invention.
[0026] FIG. 1 is a schematic diagram illustrating the structure of a display panel in some embodiments according to the present disclosure.
[0027] FIG. 2 is a schematic diagram illustrating the structure of a display panel in some embodiments according to the present disclosure.
[0028] FIG. 3 is a schematic diagram illustrating the structure of a display panel in some embodiments according to the present disclosure.
[0029] FIG. 4 is a schematic diagram illustrating the structure of a display panel in some embodiments according to the present disclosure.
[0030] FIG. 5 is a schematic diagram illustrating the structure of a display panel in some embodiments according to the present disclosure.
[0031] FIG. 6 is a zoom-in view of an electromagnetic induction electrode layer, a first conductive layer, and a second conductive layer of a display panel in some embodiments according to the present disclosure.
[0032] FIG. 7A is a schematic diagram illustrating the structure of an electromagnetic induction electrode layer in a first zoom-in region ZR1 in FIG. 6.
[0033] FIG. 7B is a schematic diagram illustrating the structure of a first conductive layer in a first zoom-in region ZR1 in FIG. 6.
[0034] FIG. 7C is a schematic diagram illustrating the structure of a second conductive layer in a first zoom-in region ZR1 in FIG. 6.
[0035] FIG. 8 is a cross-sectional view along an A-A’ line in FIG. 6.
[0036] FIG. 9 is a schematic diagram illustrating the structure of an electromagnetic induction electrode layer, a first conductive layer, and a second conductive layer in a second zoom-in region ZR2 in FIG. 6.
[0037] FIG. 10A is a schematic diagram illustrating the structure of an electromagnetic induction electrode layer in a second zoom-in region ZR2 in FIG. 6.
[0038] FIG. 10B is a schematic diagram illustrating the structure of a first conductive layer in a second zoom-in region ZR2 in FIG. 6.
[0039] FIG. 10C is a schematic diagram illustrating the structure of a second conductive layer in a second zoom-in region ZR2 in FIG. 6.
[0040] FIG. 11 is a perspective view of an electromagnetic induction electrode layer, a first conductive layer, and a second conductive layer in a portion of a display panel in some embodiments according to the present disclosure.
[0041] FIG. 12 is a schematic diagram illustrating the structure of a touch pattern and an electromagnetic induction electrode pattern in a portion of a display panel in some embodiments according to the present disclosure.
[0042] FIG. 13 is a zoom-in view of a first repeating unit in FIG. 12.
[0043] FIG. 14 is a schematic diagram illustrating the structure of a first repeating unit in FIG. 12.
[0044] FIG. 15 is a schematic diagram illustrating the structure of a second repeating unit in FIG. 12.
[0045] FIG. 16A is a schematic diagram illustrating the structure of an electromagnetic induction electrode layer, a first conductive layer, and a second conductive layer in a portion of a display panel in some embodiments according to the present disclosure.
[0046] FIG. 16B is a schematic diagram illustrating the structure of an electromagnetic induction electrode layer in a portion of a display panel in some embodiments according to the present disclosure.
[0047] FIG. 16C is a schematic diagram illustrating the structure of a first conductive layer in a portion of a display panel in some embodiments according to the present disclosure.
[0048] FIG. 16D is a schematic diagram illustrating the structure of a second conductive layer in a portion of a display panel in some embodiments according to the present disclosure.
[0049] FIG. 16E is a cross-sectional view along an A-A’ line in FIG. 16A.
[0050] FIG. 17A is a schematic diagram illustrating the structure of an electromagnetic induction electrode layer, a first conductive layer, and a second conductive layer in a portion of a display panel in some embodiments according to the present disclosure.
[0051] FIG. 17B is a schematic diagram illustrating the structure of an electromagnetic induction electrode layer, a first conductive layer, and a second conductive layer in a fourth zoom-in region ZR4 in FIG. 17A.
[0052] FIG. 17C is a schematic diagram illustrating the structure of an electromagnetic induction electrode layer, a first conductive layer, and a second conductive layer in a fifth zoom-in region ZR5 in FIG. 17A.
[0053] FIG. 17D is a schematic diagram illustrating the structure of a respective first electromagnetic induction electrode in FIG. 17C.
[0054] FIG. 17E is a cross-sectional view along a B-B’ line in FIG. 17C.
[0055] FIG. 18 is a schematic diagram illustrating the structure of an electromagnetic induction electrode layer, a first conductive layer, and a support layer in a portion of a display panel in some embodiments according to the present disclosure.DETAILED DESCRIPTION
[0056] The disclosure will now be described more specifically with reference to the following embodiments. It is to be noted that the following descriptions of some embodiments are presented herein for purpose of illustration and description only. It is not intended to be exhaustive or to be limited to the precise form disclosed.
[0057] The present disclosure provides, inter alia, a display panel and a display apparatus that substantially obviate one or more of the problems due to limitations and disadvantages of the related art. In one aspect, the present disclosure provides a display panel. In some embodiments, the display panel includes a base substrate; a magnetic isolation layer on the base substrate; an electromagnetic induction electrode layer on a side of the magnetic isolation layer away from the base substrate; a planarization layer or an encapsulating layer on a side of the electromagnetic induction electrode layer away from the base substrate; a first conductive layer on a side of the planarization layer or the encapsulating layer away from the base substrate; an insulating layer on a side of the first conductive layer away from the base substrate; and a second conductive layer on a side of the insulating layer away from the base substrate. Optionally, the electromagnetic induction electrode layer comprises a plurality of first electromagnetic induction electrodes. Optionally, the first conductive layer comprises a plurality of second electromagnetic induction electrodes and a plurality of bridges. Optionally, the second conductive layer comprises a plurality of first touch electrodes and a plurality of second touch electrodes. Optionally, a respective bridge connecting two adjacent first touch electrodes of the plurality of first touch electrodes.
[0058] FIG. 1 is a schematic diagram illustrating the structure of a display panel in some embodiments according to the present disclosure. Referring to FIG. 1, the display panel in some embodiments includes a base substrate BS; a magnetic isolation layer MIL on the base substrate BS; a support layer SL on a side of the magnetic isolation layer MIL away from the base substrate BS; a light emitting substrate LES comprising a plurality of light emitting elements LE on a side of the support layer SL away from the base substrate BS; an encapsulating layer EN on a side of the light emitting substrate LES away from the base substrate BS; an electromagnetic induction electrode layer EIEL comprising a plurality of first electromagnetic induction electrodes EIE1 on a side of the encapsulating layer EN away from the base substrate BS; a planarization layer PLN on a side of the electromagnetic induction electrode layer EIEL away from the base substrate BS; a first conductive layer CTL1 comprising a plurality of second electromagnetic induction electrodes EIE2 on a side of the planarization layer PLN away from the base substrate BS; an insulating layer IN on a side of the first conductive layer CTL1 away from the base substrate BS; a second conductive layer CTL2 comprising a plurality of first touch electrodes TE1 and a plurality of second touch electrodes TE2 on a side of the insulating layer IN away from the base substrate BS; a transparent layer TL on a side of the second conductive layer CTL2 away from the base substrate BS; a polarizer PL on a side of the transparent layer TL away from the base substrate BS;an adhesive layer AL on a side of the polarizer PL away from the base substrate BS; and a cover C on a side of the adhesive layer AL away from the base substrate BS. Optionally, the first conductive layer CTL1 further includes a plurality of bridges BR, a respective bridge connecting two adjacent first touch electrodes of the plurality of first touch electrodes TE1.
[0059] FIG. 2 is a schematic diagram illustrating the structure of a display panel in some embodiments according to the present disclosure. Referring to FIG. 2, the display panel in some embodiments includes a base substrate BS; a magnetic isolation layer MIL on the base substrate BS; an electromagnetic induction electrode layer EIEL comprising a plurality of first electromagnetic induction electrodes EIE1 on a side of the magnetic isolation layer MIL away from the base substrate BS; a support layer SL on a side of the electromagnetic induction electrode layer EIEL away from the base substrate BS; a light emitting substrate LES comprising a plurality of light emitting elements LE on a side of the support layer SL away from the base substrate BS; an encapsulating layer EN on a side of the light emitting substrate LES away from the base substrate BS; a first conductive layer CTL1 comprising a plurality of second electromagnetic induction electrodes EIE2 on a side of the encapsulating layer EN away from the base substrate BS; an insulating layer IN on a side of the first conductive layer CTL1 away from the base substrate BS; a second conductive layer CTL2 comprising a plurality of first touch electrodes TE1 and a plurality of second touch electrodes TE2 on a side of the insulating layer IN away from the base substrate BS; a transparent layer TL on a side of the second conductive layer CTL2 away from the base substrate BS; a polarizer PL on a side of the transparent layer TL away from the base substrate BS; an adhesive layer AL on a side of the polarizer PL away from the base substrate BS; and a cover C on a side of the adhesive layer AL away from the base substrate BS. Optionally, the first conductive layer CTL1 further includes a plurality of bridges BR, a respective bridge connecting two adjacent first touch electrodes of the plurality of first touch electrodes TE1. Optionally, the electromagnetic induction electrode layer EIEL can be a flexible printed circuit board, e.g., a single layer flexible printed circuit board.
[0060] The magnetic isolation layer MIL is configured to isolate the plurality of first electromagnetic induction electrodes EIE1 and the plurality of second electromagnetic induction electrodes EIE2 from external magnetic fields. The magnetic isolation layer MIL functions to prevent interference between the external magnetic fields and the electromagnetic induction electrodes. Various appropriate materials may be used for making the magnetic isolation layer MIL. Examples include ferrites, mu metal, silicon steel, amorphous metals, and conductive polymers.
[0061] In some embodiments, the display panel includes one or more first electromagnetic induction coils comprising the plurality of first electromagnetic induction electrodes EIE1. In some embodiments, the display panel includes one or more second electromagnetic induction coils comprising the plurality of second electromagnetic induction electrodes EIE2. The first and second electromagnetic induction coils work in tandem to generate electromagnetic fields for detecting inputs, such as from an electromagnetic pen. The precise patterning of these electrodes and their strategic placement within the display panel ensures effective electromagnetic induction while preventing interference with the capacitive touch electrodes (TE1 and TE2) that are also present in the display panel.
[0062] In some embodiments, the plurality of second electromagnetic induction electrodes EIE2 and the plurality of bridges BR are in a same layer. As used herein, the term “same layer” refers to the relationship between the layers simultaneously formed in the same step. In one example, the plurality of second electromagnetic induction electrodes EIE2 and the plurality of bridges BR are in a same layer when they are formed as a result of one or more steps of a same patterning process performed in a material deposited in a same deposition process. In another example, the plurality of second electromagnetic induction electrodes EIE2 and the plurality of bridges BR can be formed in a same layer by simultaneously performing the step of forming the plurality of second electromagnetic induction electrodes EIE2 and the step of forming the plurality of bridges BR. The term “same layer” does not always mean that the thickness of the layer or the height of the layer in a cross-sectional view is the same.
[0063] FIG. 3 is a schematic diagram illustrating the structure of a display panel in some embodiments according to the present disclosure. Referring to FIG. 3, in some embodiments, the plurality of first touch electrodes TE1 are arranged in a plurality of first columns, the plurality of first electromagnetic induction electrodes EIE1 are arranged in a plurality of second columns. In some embodiments, the plurality of first touch electrodes TE1 and the plurality of first electromagnetic induction electrodes EIE1 are alternately arranged.
[0064] In some embodiments, the plurality of second touch electrodes TE2 are arranged in a plurality of first rows, the plurality of second electromagnetic induction electrodes EIE2 are arranged in a plurality of second rows. In some embodiments, the plurality of second touch electrodes TE2 and the plurality of second electromagnetic induction electrodes EIE2 are alternately arranged.
[0065] In some embodiments, an orthographic projection of a respective first electromagnetic induction electrode of the plurality of first electromagnetic induction electrodes EIE1 on a base substrate is substantially (e.g., at least 50%, at least 60%, at least 70%, at least 80%, at least 90%, at least 95%, at least 99%, or 100%) non-overlapping with an orthographic projection of the plurality of first touch electrodes TE1 on the base substrate.
[0066] In some embodiments, an orthographic projection of a respective first touch electrode of the plurality of first touch electrodes TE1 on a base substrate is substantially (e.g., at least 50%, at least 60%, at least 70%, at least 80%, at least 90%, at least 95%, at least 99%, or 100%) non-overlapping with an orthographic projection of the first electromagnetic induction electrodes EIE1 on the base substrate.
[0067] In some embodiments, an orthographic projection of a respective second electromagnetic induction electrode of the plurality of second electromagnetic induction electrodes EIE2 on a base substrate is substantially (e.g., at least 50%, at least 60%, at least 70%, at least 80%, at least 90%, at least 95%, at least 99%, or 100%) non-overlapping with an orthographic projection of the plurality of second touch electrodes TE2 on the base substrate.
[0068] In some embodiments, an orthographic projection of a respective second touch electrode of the plurality of second touch electrodes TE2 on a base substrate is substantially (e.g., at least 50%, at least 60%, at least 70%, at least 80%, at least 90%, at least 95%, at least 99%, or 100%) non-overlapping with an orthographic projection of the second electromagnetic induction electrodes EIE2 on the base substrate.
[0069] In some embodiments, the display panel further includes a plurality of first touch electrode signal lines (e.g., TYL1, …, TYLm, …, TYLn) connected to the plurality of first touch electrodes TE1, respectively.
[0070] In some embodiments, the display panel further includes a plurality of second touch electrode signal lines (e.g., TXL1, …, TXLm, …, TXLn) connected to the plurality of second touch electrodes TE2, respectively.
[0071] In some embodiments, the display panel further includes a plurality of first electromagnetic induction signal lines (e.g., EYL1, …, EYLm, …, EYLn) connected to the plurality of first electromagnetic induction electrodes EIE1, respectively.
[0072] In some embodiments, the display panel further includes a plurality of second electromagnetic induction signal lines (e.g., EXL1, …, EXLm, …, EXLn) connected to the plurality of second electromagnetic induction electrodes EIE2, respectively.
[0073] In some embodiments, the display panel includes one or more first electromagnetic induction coils. In some embodiments, a respective first electromagnetic induction coil of the one or more first electromagnetic induction coils includes at least two first electromagnetic induction electrodes of the plurality of first electromagnetic induction electrodes EIE1 and at least two first electromagnetic induction signal lines of the plurality of first electromagnetic induction signal lines. In one example, two first electromagnetic induction signal lines EYL1 and EYLm, and two first electromagnetic induction electrodes connected to the two first electromagnetic induction signal lines EYL1 and EYLm respectively, form a first electromagnetic induction coil. In another example, two first electromagnetic induction signal lines EYLm and EYLn, and two first electromagnetic induction electrodes connected to the two first electromagnetic induction signal lines EYLm and EYLn respectively, form a first electromagnetic induction coil.
[0074] In some embodiments, the display panel further includes a circuit board CB configured to select which at least two first electromagnetic induction electrodes of the plurality of first electromagnetic induction electrodes EIE1 and which at least two first electromagnetic induction signal lines of the plurality of first electromagnetic induction signal lines to form a first electromagnetic induction coil of the one or more first electromagnetic induction coils.
[0075] In some embodiments, the display panel includes one or more second electromagnetic induction coils. In some embodiments, a respective second electromagnetic induction coil of the one or more second electromagnetic induction coils includes at least two second electromagnetic induction electrodes of the plurality of second electromagnetic induction electrodes EIE2 and at least two second electromagnetic induction signal lines of the plurality of second electromagnetic induction signal lines. In one example, two second electromagnetic induction signal lines EXL1 and EXLm, and two second electromagnetic induction electrodes connected to the two second electromagnetic induction signal lines EXL1 and EXLm respectively, form a second electromagnetic induction coil. In another example, two second electromagnetic induction signal lines EXLm and EXLn, and two second electromagnetic induction electrodes connected to the two second electromagnetic induction signal lines EXLm and EXLn respectively, form a second electromagnetic induction coil.
[0076] In some embodiments, the display panel further includes a circuit board CB configured to select which at least two second electromagnetic induction electrodes of the plurality of second electromagnetic induction electrodes EIE2 and which at least two second electromagnetic induction signal lines of the plurality of second electromagnetic induction signal lines to form a second electromagnetic induction coil of the one or more second electromagnetic induction coils.
[0077] In some embodiments, the display panel further includes a first connecting line CL1 connecting the plurality of first electromagnetic induction electrodes EIE1. In one example, the first connecting line CL1 is on a side of the display panel opposite to the plurality of first electromagnetic induction signal lines. In another example, a structure comprising the first connecting line CL1 and the plurality of first electromagnetic induction electrodes EIE1 has a comb shape. In some embodiments, a respective first electromagnetic induction coil of the one or more first electromagnetic induction coils includes at least two first electromagnetic induction electrodes of the plurality of first electromagnetic induction electrodes EIE1, at least two first electromagnetic induction signal lines of the plurality of first electromagnetic induction signal lines, and a portion of the first connecting line CL1. The portion of the first connecting line CL1, the at least two first electromagnetic induction electrodes of the plurality of first electromagnetic induction electrodes EIE1, and the at least two first electromagnetic induction signal lines of the plurality of first electromagnetic induction signal lines, form a first electromagnetic induction channel.
[0078] In some embodiments, the display panel further includes a second connecting line CL2 connecting the plurality of second electromagnetic induction electrodes EIE2. In one example, the second connecting line CL2 is on a side of the display panel opposite to the plurality of second electromagnetic induction signal lines. In another example, a structure comprising the second connecting line CL2 and the plurality of second electromagnetic induction electrodes EIE2 has a comb shape. In some embodiments, a respective second electromagnetic induction coil of the one or more second electromagnetic induction coils includes at least two second electromagnetic induction electrodes of the plurality of second electromagnetic induction electrodes EIE2, at least two second electromagnetic induction signal lines of the plurality of second electromagnetic induction signal lines, and a portion of the second connecting line CL2. The portion of the second connecting line CL2, the at least two second electromagnetic induction electrodes of the plurality of second electromagnetic induction electrodes EIE2, and the at least two second electromagnetic induction signal lines of the plurality of second electromagnetic induction signal lines, form a second electromagnetic induction channel.
[0079] In some embodiments, the circuit board CB includes a first circuit board CB1 and a second circuit board CB2. The first circuit board CB1 is connected to the plurality of first electromagnetic induction signal lines (e.g., EYL1, …, EYLm, …, EYLn) . The second circuit board CB2 is connected to the plurality of second electromagnetic induction signal lines (e.g., EXL1, …, EXLm, …, EXLn) .
[0080] FIG. 4 is a schematic diagram illustrating the structure of a display panel in some embodiments according to the present disclosure. Referring to FIG. 4, a multi-turn winding structure of a first electromagnetic induction coil EIC1 and a multi-turn winding structure of a second electromagnetic induction coil EIC2 are shown. One end of the first electromagnetic induction coil EIC1 is connected to a first pad PAD-D configured to receive an electromagnetic resonance signal or a ground signal, another end of the first electromagnetic induction coil EIC1 is connected to a second pad (e.g., PAD2-m or PAD2-n) . The multi-turn winding structure of the first electromagnetic induction coil EIC1 includes multiple first electromagnetic induction electrodes of the plurality of first electromagnetic induction electrodes EIE1 and connecting lines connecting first electromagnetic induction electrodes of adjacent half-turns.
[0081] One end of the second electromagnetic induction coil EIC2 is connected to a third pad PAD-L configured to receive an electromagnetic resonance signal or a ground signal, another end of the second electromagnetic induction coil EIC2 is connected to a fourth pad (e.g., PAD1-m or PAD1-n) . The multi-turn winding structure of the second electromagnetic induction coil EIC2 includes multiple second electromagnetic induction electrodes of the plurality of second electromagnetic induction electrodes EIE2 and connecting lines connecting second electromagnetic induction electrodes of adjacent half-turns.
[0082] FIG. 5 is a schematic diagram illustrating the structure of a display panel in some embodiments according to the present disclosure. Referring to FIG. 5, a single-turn winding structure of a first electromagnetic induction coil EIC1 and a single-turn winding structure of a second electromagnetic induction coil EIC2 are shown. One end of the first electromagnetic induction coil EIC1 is connected to a first pad PAD-D configured to receive an electromagnetic resonance signal or a ground signal, another end of the first electromagnetic induction coil EIC1 is connected to a second pad (e.g., PAD2-m or PAD2-n) . The single-turn winding structure of the first electromagnetic induction coil EIC1 includes two first electromagnetic induction electrodes of the plurality of first electromagnetic induction electrodes EIE1 and a connecting line connecting the two first electromagnetic induction electrodes of adjacent half-turns.
[0083] One end of the second electromagnetic induction coil EIC2 is connected to a third pad PAD-L configured to receive an electromagnetic resonance signal or a ground signal, another end of the second electromagnetic induction coil EIC2 is connected to a fourth pad (e.g., PAD1-m or PAD1-n) . The single-turn winding structure of the second electromagnetic induction coil EIC2 includes two second electromagnetic induction electrodes of the plurality of second electromagnetic induction electrodes EIE2 and a connecting line connecting the two second electromagnetic induction electrodes of adjacent half-turns.
[0084] FIG. 6 is a zoom-in view of an electromagnetic induction electrode layer, a first conductive layer, and a second conductive layer of a display panel in some embodiments according to the present disclosure. FIG. 7A is a schematic diagram illustrating the structure of an electromagnetic induction electrode layer in a first zoom-in region ZR1 in FIG. 6. FIG. 7B is a schematic diagram illustrating the structure of a first conductive layer in a first zoom-in region ZR1 in FIG. 6. FIG. 7C is a schematic diagram illustrating the structure of a second conductive layer in a first zoom-in region ZR1 in FIG. 6. Referring to FIG. 1, FIG. 2, FIG. 3, FIG. 6, and FIG. 7A to FIG. 7C, the display panel in some embodiments includes an electromagnetic induction electrode layer EIEL comprising a plurality of first electromagnetic induction electrodes EIE1; a first conductive layer CTL1 comprising a plurality of second electromagnetic induction electrodes EIE2 and a plurality of bridges BR on the electromagnetic induction electrode layer EIEL; and a second conductive layer CTL2 comprising a plurality of first touch electrodes TE1 and a plurality of second touch electrodes TE2 on a side of the first conductive layer CTL1 away from the electromagnetic induction electrode layer EIEL. FIG. 6 shows 2 x 2 repeating units of the touch patterns of the display panel.
[0085] FIG. 8 is a cross-sectional view along an A-A’ line in FIG. 6. Referring to FIG. 6 and FIG. 8, the display panel in some embodiments includes an electromagnetic induction electrode layer EIEL comprising a plurality of first electromagnetic induction electrodes EIE1; a planarization layer PLN on the electromagnetic induction electrode layer EIEL; a first conductive layer CTL1 comprising a plurality of second electromagnetic induction electrodes EIE2 and a plurality of bridges BR on a side of the planarization layer PLN away from the electromagnetic induction electrode layer EIEL; an insulating layer IN on a side of the first conductive layer CTL1 away from the planarization layer PLN; and a second conductive layer CTL2 comprising a plurality of first touch electrodes TE1 and a plurality of second touch electrodes TE2 on a side of the insulating layer IN away from the first conductive layer CTL1.
[0086] FIG. 9 is a schematic diagram illustrating the structure of an electromagnetic induction electrode layer, a first conductive layer, and a second conductive layer in a second zoom-in region ZR2 in FIG. 6. FIG. 10A is a schematic diagram illustrating the structure of an electromagnetic induction electrode layer in a second zoom-in region ZR2 in FIG. 6. FIG. 10B is a schematic diagram illustrating the structure of a first conductive layer in a second zoom-in region ZR2 in FIG. 6. FIG. 10C is a schematic diagram illustrating the structure of a second conductive layer in a second zoom-in region ZR2 in FIG. 6. FIG. 9 and FIG. 10A to FIG. 10C show one repeating unit of the touch pattern in the display panel. Referring to FIG. 1, FIG. 2, FIG. 3, FIG. 6, FIG. 9, and FIG. 10A to FIG. 10C, the display panel in some embodiments includes an electromagnetic induction electrode layer EIEL; a first conductive layer CTL1 on the electromagnetic induction electrode layer EIEL; and a second conductive layer CTL2 on a side of the first conductive layer CTL1 away from the electromagnetic induction electrode layer EIEL. In some embodiments, the electromagnetic induction electrode layer EIEL includes a plurality of first electromagnetic induction electrodes EIE1. In some embodiments, the first conductive layer CTL1 includes a plurality of second electromagnetic induction electrodes EIE2 and a plurality of bridges BR. In some embodiments, the second conductive layer CTL2 includes a plurality of first touch electrodes TE1, a plurality of second touch electrodes TE2, and a plurality of dummy electrodes DE. A respective dummy electrode of the plurality of dummy electrodes DE is between adjacent touch electrodes blocks, for example, between a first touch electrode block of a first touch electrode of the plurality of first touch electrodes TE1, and a second touch electrode block of a second touch electrode of the plurality of second touch electrodes TE2.
[0087] In some embodiments, a touch electrode repeating unit of the display panel has a first width w1 along a first direction DR1 and a second width w2 along a second direction DR2. The plurality of first touch electrodes TE1 are arranged along the first direction DR1. The plurality of second touch electrodes TE2 are arranged along the second direction DR2. In some embodiments, a portion of a first electromagnetic induction electrode of the plurality of first electromagnetic induction electrodes EIE1 in the touch electrode repeating unit has a third width w3 along the first direction DR1. In some embodiments, a portion of a second electromagnetic induction electrode of the plurality of second electromagnetic induction electrodes EIE2 in the touch electrode repeating unit has a fourth width w4 along the second direction DR2. A touch electrode repeating unit refers to the smallest repeating pattern or structural element of touch electrodes in the display panel. The touch electrode repeating unit typically includes a specific arrangement of touch electrodes that detect input by measuring changes in capacitance when a user's finger or stylus interacts with the screen. The touch electrode repeating units are arranged in a grid or matrix format across the display surface, allowing the panel to register touch inputs at various points. The touch electrode repeating units are often designed to be uniform and regularly spaced, ensuring consistent touch detection and responsiveness across the entire display area.
[0088] In some embodiments, the third width w3 is in a range of (w1) / 5 to (w1) / 2. In some embodiments, the fourth width w4 is in a range of (w2) / 5 to (w2) / 2.
[0089] FIG. 11 is a perspective view of an electromagnetic induction electrode layer, a first conductive layer, and a second conductive layer in a portion of a display panel in some embodiments according to the present disclosure. Referring to FIG. 11, in some embodiments, the electromagnetic induction electrode layer EIEL includes a plurality of first electromagnetic induction electrodes EIE1. In some embodiments, the first conductive layer CTL1 includes a plurality of second electromagnetic induction electrodes EIE2 and a plurality of bridges BR. In some embodiments, the second conductive layer CTL2 includes a plurality of first touch electrodes TE1 and a plurality of second touch electrodes TE2.
[0090] FIG. 12 is a schematic diagram illustrating the structure of a touch pattern and an electromagnetic induction electrode pattern in a portion of a display panel in some embodiments according to the present disclosure. FIG. 13 is a zoom-in view of a first repeating unit in FIG. 12. Referring to FIG. 12 and FIG. 13, a first repeating unit RU1 in some embodiments is a minimum repeating unit of the touch pattern of the display panel; and a second repeating unit RU2 in some embodiments is a minimum repeating unit of the electromagnetic induction electrode pattern. In some embodiments, the first repeating unit RU1 has a unit width c along the first direction DR1 and a unit length d along the second direction DR2; the second repeating unit RU2 has a unit width a along the first direction DR1 and a unit length b along the second direction DR2. In some embodiments, the second repeating unit RU2 has an area greater than an area of the first repeating unit RU1. For example, the second repeating unit RU2 may span over a plurality of first repeating units. A plurality of touch electrodes TE and a plurality of electromagnetic induction electrodes EIE are denoted in FIG. 12 and FIG. 13.
[0091] In some embodiments, the unit width a of the second repeating unit RU2 is in a range of the unit width c of the first repeating unit RU1 to five times the unit width c of the first repeating unit RU1. In some embodiments, the unit length b of the second repeating unit RU2 is in a range of the unit length d of the first repeating unit RU1 to five times the unit length d of the first repeating unit RU1.
[0092] In some embodiments, the plurality of electromagnetic induction electrodes EIE includes a plurality of first electromagnetic induction electrodes (e.g., EMR-Yn, EMR-Yn+1) and a plurality of second electromagnetic induction electrodes (e.g., EMR-Xm, EMR-Xm+1) . In some embodiments, two adjacent first electromagnetic induction electrodes (e.g., a pair of adjacent EMR-Yn, EMR-Yn+1) of the plurality of first electromagnetic induction electrodes form a first electromagnetic induction coil having a single-turn winding structure. In some embodiments, two adjacent second electromagnetic induction electrodes (e.g., a pair of adjacent EMR-Xn, EMR-Xn+1) of the plurality of second electromagnetic induction electrodes form a second electromagnetic induction coil having a single-turn winding structure.
[0093] FIG. 14 is a schematic diagram illustrating the structure of a first repeating unit in FIG. 12. Referring to FIG. 14, the display panel includes a plurality of first touch electrodes TE1 arranged along the first direction DR1 and a plurality of second touch electrodes TE2 arranged along the second direction DR2. Optionally, the display panel further includes a plurality of dummy electrodes DE. A respective dummy electrode of the plurality of dummy electrodes DE is between adjacent touch electrodes blocks.
[0094] FIG. 15 is a schematic diagram illustrating the structure of a second repeating unit in FIG. 12. Referring to FIG. 15, the display panel includes an electromagnetic induction electrode layer EIEL and a first conductive layer CTL1 on the electromagnetic induction electrode layer EIEL. In some embodiments, the electromagnetic induction electrode layer EIEL includes a plurality of first electromagnetic induction electrodes EIE1 arranged along the second direction DR2. In some embodiments, the first conductive layer CTL1 includes a plurality of second electromagnetic induction electrodes EIE2 arranged along the first direction DR1, and a plurality of bridges BR. a respective bridge connecting two adjacent first touch electrodes of the plurality of first touch electrodes.
[0095] FIG. 16A is a schematic diagram illustrating the structure of an electromagnetic induction electrode layer, a first conductive layer, and a second conductive layer in a portion of a display panel in some embodiments according to the present disclosure. FIG. 16B is a schematic diagram illustrating the structure of an electromagnetic induction electrode layer in a portion of a display panel in some embodiments according to the present disclosure. FIG. 16C is a schematic diagram illustrating the structure of a first conductive layer in a portion of a display panel in some embodiments according to the present disclosure. FIG. 16D is a schematic diagram illustrating the structure of a second conductive layer in a portion of a display panel in some embodiments according to the present disclosure. FIG. 16E is a cross-sectional view along an A-A’ line in FIG. 16A. FIG. 16A to FIG. 16E illustrate the structure of an electromagnetic induction electrode layer, a first conductive layer, and a second conductive layer in a third zoom-in region ZR3 in FIG. 13.
[0096] Referring to FIG. 16A to FIG. 16E, in some embodiments, the electromagnetic induction electrode layer includes a plurality of first electromagnetic induction electrodes EIE1. In some embodiments, the plurality of first electromagnetic induction electrodes EIE1 include a plurality of mesh electrodes, as shown in FIG. 16B. A mesh electrode is a type of electrode structure comprising a grid-like pattern of conductive material (such as metal, metal oxide, or conductive polymers) arranged in a mesh or net configuration. The mesh design allows for transparency while maintaining electrical conductivity, making it ideal for applications where visibility and low resistance are needed, such as in touchscreens or electromagnetic induction systems. The mesh pattern can also reduce interference with optical elements and enhance flexibility in flexible display technologies.
[0097] In some embodiments, the first conductive layer CTL1 includes a plurality of second electromagnetic induction electrodes EIE2. In some embodiments, the plurality of second electromagnetic induction electrodes EIE2 include a plurality of mesh electrodes, as shown in FIG. 16C. In some embodiments, the first conductive layer CTL1 further includes a plurality of bridges BR, a respective bridge connecting two adjacent first touch electrodes of the plurality of first touch electrodes. In some embodiments, the plurality of bridges BR are also in a mesh form.
[0098] In some embodiments, the second conductive layer CTL2 includes a plurality of first touch electrodes TE1 and a plurality of second touch electrodes TE2. Two adjacent first touch electrodes of the plurality of first touch electrodes TE1 are connected to a respective bridge of the plurality of bridges BR in the first conductive layer CTL1. In some embodiments, the plurality of first touch electrodes TE1 include a plurality of mesh electrodes, as shown in FIG. 16D. In some embodiments, the plurality of second touch electrodes TE2 include a plurality of mesh electrodes, as shown in FIG. 16D. In one example, a respective bridge of the plurality of bridges BR is connected to a first adjacent first touch electrode of the plurality of first touch electrodes TE1 through one or more first vias v1, and is connected to a second adjacent first touch electrode of the plurality of first touch electrodes TE1 through one or more second vias v2.
[0099] In some embodiments, the second conductive layer CTL2 further includes a plurality of dummy electrodes DE. A respective dummy electrode of the plurality of dummy electrodes DE is between adjacent touch electrodes blocks, for example, between a first touch electrode block of a first touch electrode of the plurality of first touch electrodes TE1, and a second touch electrode block of a second touch electrode of the plurality of second touch electrodes TE2. In some embodiments, the plurality of dummy electrodes DE include a plurality of mesh electrodes, as shown in FIG. 16D.
[0100] FIG. 17A is a schematic diagram illustrating the structure of an electromagnetic induction electrode layer, a first conductive layer, and a second conductive layer in a portion of a display panel in some embodiments according to the present disclosure. FIG. 17B is a schematic diagram illustrating the structure of an electromagnetic induction electrode layer, a first conductive layer, and a second conductive layer in a fourth zoom-in region ZR4 in FIG. 17A. FIG. 17C is a schematic diagram illustrating the structure of an electromagnetic induction electrode layer, a first conductive layer, and a second conductive layer in a fifth zoom-in region ZR5 in FIG. 17A. FIG. 17D is a schematic diagram illustrating the structure of a respective first electromagnetic induction electrode in FIG. 17C. FIG. 17E is a cross-sectional view along a B-B’ line in FIG. 17C. Referring to FIG. 17A to FIG. 17C, in some embodiments, the electromagnetic induction electrode layer includes a plurality of first electromagnetic induction electrodes EIE1. In some embodiments, the plurality of first electromagnetic induction electrodes EIE1 include a plurality of mesh electrodes.
[0101] In some embodiments, the first conductive layer includes a plurality of second electromagnetic induction electrodes EIE2. In some embodiments, the plurality of second electromagnetic induction electrodes EIE2 include a plurality of mesh electrodes. In some embodiments, the first conductive layer CTL1 further includes a plurality of bridges BR, a respective bridge connecting two adjacent first touch electrodes of the plurality of first touch electrodes. In some embodiments, the plurality of bridges BR are also in a mesh form.
[0102] In some embodiments, the second conductive layer includes a plurality of first touch electrodes TE1 and a plurality of second touch electrodes TE2. Two adjacent first touch electrodes of the plurality of first touch electrodes TE1 are connected to a respective bridge of the plurality of bridges BR in the first conductive layer. In some embodiments, the plurality of first touch electrodes TE1 include a plurality of mesh electrodes. In some embodiments, the plurality of second touch electrodes TE2 include a plurality of mesh electrodes.
[0103] In some embodiments, the second conductive layer further includes a plurality of dummy electrodes DE. A respective dummy electrode of the plurality of dummy electrodes DE is between adjacent touch electrodes blocks, for example, between a first touch electrode block of a first touch electrode of the plurality of first touch electrodes TE1, and a second touch electrode block of a second touch electrode of the plurality of second touch electrodes TE2. In some embodiments, the plurality of dummy electrodes DE include a plurality of mesh electrodes.
[0104] To minimize the parasitic capacitance between the touch electrodes and the electromagnetic induction electrodes, overlapping of orthographic projections of the touch electrodes and the electromagnetic induction electrodes on a base substrate is minimized. In some embodiments, an orthographic projection of the plurality of first electromagnetic induction electrodes EIE1 on a base substrate is substantially (e.g., at least 80%, at least 85%, at least 90%, at least 95%, or at least 99%) non-overlapping with an orthographic projection of the plurality of first touch electrodes TE1 on the base substrate. In some embodiments, an orthographic projection of the plurality of first electromagnetic induction electrodes EIE1 on a base substrate is substantially (e.g., at least 80%, at least 85%, at least 90%, at least 95%, or at least 99%) non-overlapping with an orthographic projection of the plurality of second touch electrodes TE2 on the base substrate. In some embodiments, an orthographic projection of the plurality of second electromagnetic induction electrodes EIE2 on a base substrate is substantially (e.g., at least 80%, at least 85%, at least 90%, at least 95%, or at least 99%) non-overlapping with an orthographic projection of the plurality of first touch electrodes TE1 on the base substrate. In some embodiments, an orthographic projection of the plurality of second electromagnetic induction electrodes EIE2 on a base substrate is substantially (e.g., at least 80%, at least 85%, at least 90%, at least 95%, or at least 99%) non-overlapping with an orthographic projection of the plurality of second touch electrodes TE2 on the base substrate.
[0105] In some embodiments, an orthographic projection of the plurality of first electromagnetic induction electrodes EIE1 on a base substrate is substantially (e.g., at least 80%, at least 85%, at least 90%, at least 95%, or at least 99%) non-overlapping with an orthographic projection of the plurality of second electromagnetic induction electrodes EIE2 on the base substrate.
[0106] In some embodiments, the plurality of first electromagnetic induction electrodes EIE1 include a plurality of mesh electrodes. Optionally, a respective mesh grid is configured to surround at least one subpixel. Where the orthographic projection of the plurality of first electromagnetic induction electrodes EIE1 on the base substrate overlaps with the orthographic projection of the plurality of second touch electrodes TE2 on the base substrate, the plurality of first electromagnetic induction electrodes EIE1 have a relatively more sparse mesh structure. For example, a grid or mesh pattern is less dense where the orthographic projection of the plurality of first electromagnetic induction electrodes EIE1 on the base substrate overlaps with the orthographic projection of the plurality of second touch electrodes TE2 on the base substrate. This allows for reduced interference and minimizing signal disruption between the overlapping components. In some embodiments, where the orthographic projection of the plurality of first electromagnetic induction electrodes EIE1 on the base substrate overlaps with the orthographic projection of the plurality of second touch electrodes TE2 on the base substrate, the plurality of first electromagnetic induction electrodes EIE1 have a first mesh pattern MSP1. In some embodiments, where the orthographic projection of the plurality of first electromagnetic induction electrodes EIE1 on the base substrate is non-overlapping with the orthographic projection of the plurality of second touch electrodes TE2 on the base substrate, the plurality of first electromagnetic induction electrodes EIE1 have a second mesh pattern MSP2. Optionally, the second mesh pattern MSP2 has a mesh line distribution density greater than a mesh line distribution density in the first mesh pattern MSP1.
[0107] In some embodiments, an orthographic projection of a respective first electromagnetic induction electrode of the plurality of first electromagnetic induction electrodes EIE1 on a base substrate is substantially surrounded by an orthographic projection of one or more first touch electrodes of the plurality of first touch electrodes TE1 on the base substrate. In some embodiments, an orthographic projection of a respective second electromagnetic induction electrode of the plurality of second electromagnetic induction electrodes EIE2 on the base substrate is substantially surrounded by an orthographic projection of one or more second touch electrodes of the plurality of second touch electrodes TE2 on the base substrate.
[0108] FIG. 18 is a schematic diagram illustrating the structure of an electromagnetic induction electrode layer, a first conductive layer, and a support layer in a portion of a display panel in some embodiments according to the present disclosure. Referring to FIG. 18 and FIG. 2, the display panel in some embodiments include an electromagnetic induction electrode layer comprising a plurality of first electromagnetic induction electrodes EIE1, a support layer SL on the plurality of first electromagnetic induction electrodes EIE1, and a first conductive layer comprising a plurality of second electromagnetic induction electrodes EIE2 on a side of the support layer SL away from the plurality of first electromagnetic induction electrodes EIE1.
[0109] In another aspect, the present invention provides a display apparatus, including the display panel described herein or fabricated by a method described herein, and one or more integrated circuits connected to the array substrate. Examples of appropriate display apparatuses include, but are not limited to, an electronic paper, a mobile phone, a tablet computer, a television, a monitor, a notebook computer, a digital album, a GPS, etc. Optionally, the display apparatus is an organic light emitting diode display apparatus. Optionally, the display apparatus is a micro light emitting diode display apparatus. Optionally, the display apparatus is a mini light emitting diode display apparatus.
[0110] In another aspect, the present disclosure provides a method of fabricating an array substrate. In some embodiments, the method includes forming a magnetic isolation layer on a base substrate; forming an electromagnetic induction electrode layer on a side of the magnetic isolation layer away from the base substrate; forming a planarization layer or an encapsulating layer on a side of the electromagnetic induction electrode layer away from the base substrate; forming a first conductive layer on a side of the planarization layer or the encapsulating layer away from the base substrate; forming an insulating layer on a side of the first conductive layer away from the base substrate; and forming a second conductive layer on a side of the insulating layer away from the base substrate. Optionally, forming the electromagnetic induction electrode layer comprises forming a plurality of first electromagnetic induction electrodes. Optionally, forming the first conductive layer comprises forming a plurality of second electromagnetic induction electrodes and forming a plurality of bridges. Optionally, forming the second conductive layer comprises forming a plurality of first touch electrodes and forming a plurality of second touch electrodes. Optionally, a respective bridge connecting two adjacent first touch electrodes of the plurality of first touch electrodes.
[0111] The foregoing description of the embodiments of the invention has been presented for purposes of illustration and description. It is not intended to be exhaustive or to limit the invention to the precise form or to exemplary embodiments disclosed. Accordingly, the foregoing description should be regarded as illustrative rather than restrictive. Obviously, many modifications and variations will be apparent to practitioners skilled in this art. The embodiments are chosen and described in order to explain the principles of the invention and its best mode practical application, thereby to enable persons skilled in the art to understand the invention for various embodiments and with various modifications as are suited to the particular use or implementation contemplated. It is intended that the scope of the invention be defined by the claims appended hereto and their equivalents in which all terms are meant in their broadest reasonable sense unless otherwise indicated. Therefore, the term “the invention” , “the present invention” or the like does not necessarily limit the claim scope to a specific embodiment, and the reference to exemplary embodiments of the invention does not imply a limitation on the invention, and no such limitation is to be inferred. The invention is limited only by the spirit and scope of the appended claims. Moreover, these claims may refer to use “first” , “second” , etc. following with noun or element. Such terms should be understood as a nomenclature and should not be construed as giving the limitation on the number of the elements modified by such nomenclature unless specific number has been given. Any advantages and benefits described may not apply to all embodiments of the invention. It should be appreciated that variations may be made in the embodiments described by persons skilled in the art without departing from the scope of the present invention as defined by the following claims. Moreover, no element and component in the present disclosure is intended to be dedicated to the public regardless of whether the element or component is explicitly recited in the following claims.
Claims
1.A display panel, comprising:a base substrate;a magnetic isolation layer on the base substrate;an electromagnetic induction electrode layer on a side of the magnetic isolation layer away from the base substrate;a planarization layer or an encapsulating layer on a side of the electromagnetic induction electrode layer away from the base substrate;a first conductive layer on a side of the planarization layer or the encapsulating layer away from the base substrate;an insulating layer on a side of the first conductive layer away from the base substrate; anda second conductive layer on a side of the insulating layer away from the base substrate;wherein the electromagnetic induction electrode layer comprises a plurality of first electromagnetic induction electrodes;the first conductive layer comprises a plurality of second electromagnetic induction electrodes and a plurality of bridges;the second conductive layer comprises a plurality of first touch electrodes and a plurality of second touch electrodes; anda respective bridge connecting two adjacent first touch electrodes of the plurality of first touch electrodes.2.The display panel of claim 1, further comprising:a support layer on a side of the magnetic isolation layer away from the base substrate; anda light emitting substrate comprising a plurality of light emitting elements on a side of the support layer away from the base substrate;wherein the display panel comprises:the encapsulating layer on a side of the light emitting substrate away from the base substrate; andthe planarization layer on a side of the electromagnetic induction electrode layer away from the encapsulating layer;wherein the electromagnetic induction electrode layer is on a side of the encapsulating layer away from the base substrate; andthe planarization layer is on a side of the electromagnetic induction electrode layer away from the base substrate.3.The display panel of claim 1, further comprising:a support layer on a side of the electromagnetic induction electrode layer away from the base substrate; anda light emitting substrate comprising a plurality of light emitting elements on a side of the support layer away from the base substrate;wherein the electromagnetic induction electrode layer is on a side of the support layer closer to the base substrate; andthe encapsulating layer is on a side of the light emitting substrate away from the electromagnetic induction electrode layer.4.The display panel of any one of claims 1 to 3, wherein the plurality of first touch electrodes are arranged in a plurality of first columns;the plurality of first electromagnetic induction electrodes are arranged in a plurality of second columns;the plurality of first touch electrodes and the plurality of first electromagnetic induction electrodes are alternately arranged;the plurality of second touch electrodes are arranged in a plurality of first rows;the plurality of second electromagnetic induction electrodes are arranged in a plurality of second rows; andthe plurality of second touch electrodes and the plurality of second electromagnetic induction electrodes are alternately arranged.5.The display panel of claim 4, wherein an orthographic projection of a respective first electromagnetic induction electrode of the plurality of first electromagnetic induction electrodes on a base substrate is substantially non-overlapping with an orthographic projection of the plurality of first touch electrodes on the base substrate; andan orthographic projection of a respective first touch electrode of the plurality of first touch electrodes on the base substrate is substantially non-overlapping with an orthographic projection of the plurality of first electromagnetic induction electrodes on the base substrate.6.The display panel of claim 4, wherein an orthographic projection of a respective second electromagnetic induction electrode of the plurality of second electromagnetic induction electrodes on a base substrate is substantially non-overlapping with an orthographic projection of the plurality of second touch electrodes on the base substrate; andan orthographic projection of a respective second touch electrode of the plurality of second touch electrodes on the base substrate is substantially non-overlapping with an orthographic projection of the plurality of second electromagnetic induction electrodes on the base substrate.7.The display panel of any one of claims 1 to 6, further comprising:a plurality of first electromagnetic induction signal lines connected to the plurality of first electromagnetic induction electrodes, respectively; anda plurality of second electromagnetic induction signal lines connected to the plurality of second electromagnetic induction electrodes, respectively;wherein the display panel comprises:one or more first electromagnetic induction coils; andone or more second electromagnetic induction coils;wherein a respective first electromagnetic induction coil of the one or more first electromagnetic induction coils includes at least two first electromagnetic induction electrodes of the plurality of first electromagnetic induction electrodes and at least two first electromagnetic induction signal lines of the plurality of first electromagnetic induction signal lines; anda respective second electromagnetic induction coil of the one or more second electromagnetic induction coils includes at least two second electromagnetic induction electrodes of the plurality of second electromagnetic induction electrodes and at least two second electromagnetic induction signal lines of the plurality of second electromagnetic induction signal lines.8.The display panel of claim 7, further comprising a circuit board configured to:select which at least two first electromagnetic induction electrodes of the plurality of first electromagnetic induction electrodes and which at least two first electromagnetic induction signal lines of the plurality of first electromagnetic induction signal lines to form a first electromagnetic induction coil of the one or more first electromagnetic induction coils; andselect which at least two second electromagnetic induction electrodes of the plurality of second electromagnetic induction electrodes and which at least two second electromagnetic induction signal lines of the plurality of second electromagnetic induction signal lines to form a second electromagnetic induction coil of the one or more second electromagnetic induction coils.9.The display panel of claim 7, further comprising a first connecting line connecting the plurality of first electromagnetic induction electrodes;wherein a respective first electromagnetic induction coil of the one or more first electromagnetic induction coils comprises at least two first electromagnetic induction electrodes of the plurality of first electromagnetic induction electrodes, at least two first electromagnetic induction signal lines of the plurality of first electromagnetic induction signal lines, and a portion of the first connecting line; andthe portion of the first connecting line, the at least two first electromagnetic induction electrodes of the plurality of first electromagnetic induction electrodes, and the at least two first electromagnetic induction signal lines of the plurality of first electromagnetic induction signal lines, form a first electromagnetic induction channel.10.The display panel of claim 9, wherein a structure comprising the first connecting line and the plurality of first electromagnetic induction electrodes has a comb shape.11.The display panel of claim 7, further comprising a second connecting line connecting the plurality of second electromagnetic induction electrodes;wherein a respective second electromagnetic induction coil of the one or more second electromagnetic induction coils comprises at least two second electromagnetic induction electrodes of the plurality of second electromagnetic induction electrodes, at least two second electromagnetic induction signal lines of the plurality of second electromagnetic induction signal lines, and a portion of the second connecting line; andthe portion of the second connecting line, the at least two second electromagnetic induction electrodes of the plurality of second electromagnetic induction electrodes, and the at least two second electromagnetic induction signal lines of the plurality of second electromagnetic induction signal lines, form a second electromagnetic induction channel.12.The display panel of claim 11, wherein a structure comprising the second connecting line and the plurality of second electromagnetic induction electrodes has a comb shape.13.The display panel of any one of claims 1 to 12, comprising a multi-turn winding structure of a first electromagnetic induction coil;wherein the multi-turn winding structure of the first electromagnetic induction coil comprises multiple first electromagnetic induction electrodes of the plurality of first electromagnetic induction electrodes and connecting lines connecting first electromagnetic induction electrodes of adjacent half-turns; andone end of the first electromagnetic induction coil is connected to a first pad configured to receive an electromagnetic resonance signal or a ground signal, another end of the first electromagnetic induction coil is connected to a second pad.14.The display panel of any one of claims 1 to 12, comprising a multi-turn winding structure of a second electromagnetic induction coil;wherein the multi-turn winding structure of the second electromagnetic induction coil comprises multiple second electromagnetic induction electrodes of the plurality of second electromagnetic induction electrodes and connecting lines connecting second electromagnetic induction electrodes of adjacent half-turns; andone end of the second electromagnetic induction coil is connected to a third pad configured to receive an electromagnetic resonance signal or a ground signal, another end of the second electromagnetic induction coil is connected to a fourth pad.15.The display panel of any one of claims 1 to 12, comprising a single-turn winding structure of a first electromagnetic induction coil;wherein the single-turn winding structure of the first electromagnetic induction coil comprises two first electromagnetic induction electrodes of the plurality of first electromagnetic induction electrodes and a connecting line connecting the two first electromagnetic induction electrodes of adjacent half-turns; andone end of the first electromagnetic induction coil is connected to a first pad configured to receive an electromagnetic resonance signal or a ground signal, another end of the first electromagnetic induction coil is connected to a second pad.16.The display panel of any one of claims 1 to 12, comprising a single-turn winding structure of a second electromagnetic induction coil;wherein the single-turn winding structure of the second electromagnetic induction coil comprises two second electromagnetic induction electrodes of the plurality of second electromagnetic induction electrodes and a connecting line connecting the two second electromagnetic induction electrodes of adjacent half-turns; andone end of the second electromagnetic induction coil is connected to a third pad configured to receive an electromagnetic resonance signal or a ground signal, another end of the second electromagnetic induction coil is connected to a fourth pad.17.The display panel of any one of claims 1 to 16, wherein a touch electrode repeating unit of the display panel has a first width along a first direction and a second width along a second direction;the plurality of first touch electrodes are arranged along the first direction;the plurality of second touch electrodes are arranged along the second direction;a portion of a first electromagnetic induction electrode of the plurality of first electromagnetic induction electrodes in the touch electrode repeating unit has a third width along the first direction;a portion of a second electromagnetic induction electrode of the plurality of second electromagnetic induction electrodes in the touch electrode repeating unit has a fourth width along the second direction;the third width is in a range of one fifth of the first width to one half of the first width; andthe fourth width is in a range of one fifth of the second width to one half of the second width.18.The display panel of any one of claims 1 to 17, wherein a minimum repeating unit of touch pattern has a first unit width along a first direction and a first unit length along a second direction;a minimum repeating unit of an electromagnetic induction electrode pattern has a second unit width along the first direction and a second unit length along the second direction;the minimum repeating unit of the electromagnetic induction electrode pattern has an area greater than an area of the minimum repeating unit of touch pattern;the second unit width is in a range of the first unit width to five times the first unit width; andthe second unit length is in a range of the first unit length to five times the first unit length.19.The display panel of any one of claims 1 to 18, wherein the plurality of first electromagnetic induction electrodes comprise a plurality of mesh electrodes;where an orthographic projection of the plurality of first electromagnetic induction electrodes on a base substrate overlaps with an orthographic projection of the plurality of second touch electrodes on the base substrate, the plurality of first electromagnetic induction electrodes have a first mesh pattern;where the orthographic projection of the plurality of first electromagnetic induction electrodes on the base substrate is non-overlapping with the orthographic projection of the plurality of second touch electrodes on the base substrate, the plurality of first electromagnetic induction electrodes have a second mesh pattern; andthe second mesh pattern has a mesh line distribution density greater than a mesh line distribution density in the first mesh pattern.20.The display panel of any one of claims 1 to 3, wherein an orthographic projection of a respective first electromagnetic induction electrode of the plurality of first electromagnetic induction electrodes on a base substrate is substantially surrounded by an orthographic projection of one or more first touch electrodes of the plurality of first touch electrodes on the base substrate; andan orthographic projection of a respective second electromagnetic induction electrode of the plurality of second electromagnetic induction electrodes on the base substrate is substantially surrounded by an orthographic projection of one or more second touch electrodes of the plurality of second touch electrodes on the base substrate.21.A display apparatus, comprising the display panel of any one of claims 1 to 19, and one or more integrated circuits connected to the display panel.