Touch display panel

Abstract

The application provides a touch display panel, comprising a plurality of first touch electrode units arranged along a second direction, the first touch electrode unit comprising a first touch electrode, a first connecting part and a first resistance unit, the first resistance unit comprising a first gap and at least one first cross bridge, the first cross bridge electrically connecting two parts of the first touch electrode separated by the first gap; a plurality of second touch electrode units arranged along a first direction, the second touch electrode unit comprising a second touch electrode, a second connecting part and a second resistance unit, the second resistance unit comprising a second gap and at least one second cross bridge, the second cross bridge electrically connecting two parts of the second touch electrode separated by the second gap. The touch display panel of the application changes the in-plane resistance distribution of the touch electrode by arranging the resistance unit on the touch electrode unit, optimizes the voltage and current distribution, and further improves the anti-static ability and reliability of the touch display panel.

Description

Technical Field

[0001] This invention relates to the field of display panels, and more specifically, to a touch display panel. Background Technology

[0002] With social development and the continuous progress of science and technology, people have higher and higher requirements for mobile phone display screens, such as display panels with touch functions, which can facilitate simple and convenient human-computer interaction.

[0003] Touchscreen display panels can be categorized into four types based on their sensing principle: resistive, capacitive, surface acoustic wave, and optical. Currently, capacitive touchscreens are one of the most mainstream display panels on the market due to their advantages such as dust resistance, fire resistance, scratch resistance, durability, and high resolution. They are widely used in smartphones, tablets, and e-readers. However, capacitive touchscreen display panels often generate static charge during use due to friction or other factors, meaning they have poor resistance to static charge buildup, which significantly affects the reliability of the display panel.

[0004] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of the present invention, and therefore may include information that does not constitute prior art known to those skilled in the art. Summary of the Invention

[0005] In order to solve the above-mentioned technical problems, the purpose of this invention is to provide a touch display panel that improves the anti-static capability and reliability of the touch display panel.

[0006] The present invention provides a touch display panel, comprising:

[0007] A plurality of first touch electrode units, each first touch electrode unit comprising a plurality of first touch electrodes arranged along a first direction, a first connecting portion connecting two adjacent first touch electrodes, and at least one first resistive unit disposed on each first touch electrode. Each first resistive unit includes a first gap separating the first touch electrodes and at least one first bridge, the first bridge electrically connecting two portions of the first touch electrode separated by the first gap. The plurality of first touch electrode units are arranged along a second direction; and / or

[0008] A plurality of second touch electrode units, each second touch electrode unit including a plurality of second touch electrodes arranged along a second direction, a second connecting portion connecting two adjacent second touch electrodes, and at least one second resistor unit disposed on each second touch electrode. The second resistor unit includes a second gap separating the second touch electrodes and at least one second bridge. The second bridge electrically connects two portions of the second touch electrode separated by the second gap. The plurality of second touch electrode units are arranged along the first direction, and the second connecting portion and the first connecting portion are insulated from each other.

[0009] According to some examples of the present invention, the first gap separates the first touch electrode in the first direction;

[0010] The second gap separates the second touch electrode in the second direction.

[0011] According to some examples of the invention, the angle between the line connecting the two endpoints of the first gap and the second direction is less than 60 degrees;

[0012] The angle between the line connecting the two endpoints of the second gap and the first direction is less than 60 degrees.

[0013] According to some examples of the present invention, the first gap is a straight structure or an L-shaped structure;

[0014] The second gap is a straight structure or an L-shaped structure.

[0015] According to some examples of the present invention, the first touch electrode unit includes a first resistor unit disposed on each of the first touch electrodes; the second touch electrode unit includes a second resistor unit disposed on each of the second touch electrodes.

[0016] According to some examples of the present invention, the first gap is disposed in a region of the first touch electrode near the first connection portion, or the first gap is disposed on the centerline of the first touch electrode;

[0017] The second gap is disposed on the side of the second touch electrode near the second connection portion, or the second gap is disposed on the center line of the second touch electrode.

[0018] According to some examples of the present invention, the first touch electrode unit includes two first resistor units disposed on each of the first touch electrodes.

[0019] The second touch electrode unit includes two second resistor units disposed on each of the second touch electrodes.

[0020] According to some examples of the present invention, the two first gaps are respectively disposed on both sides of the first touch electrode near the first connection portion;

[0021] The two second gaps are respectively disposed on both sides of the second touch electrode near the second connection portion.

[0022] According to some examples of the present invention, the first resistor unit includes a plurality of the first bridges; and / or

[0023] The second resistor unit includes a plurality of second bridges.

[0024] According to some examples of the invention, the first bridge is perpendicular to the first gap;

[0025] The second bridge is perpendicular to the second gap.

[0026] According to some examples of the present invention, the first bridge is a metal bridge;

[0027] The second bridge is a metal bridge.

[0028] Therefore, the touch display panel of the present invention provides one or more resistor units on each touch electrode unit in two directions, thereby changing the in-plane resistance distribution of the touch electrodes, optimizing the voltage and current distribution, and thus improving the antistatic capability and reliability of the touch display panel. Attached Figure Description

[0029] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. Other features, objects, and advantages of the invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings. It is obvious that the drawings described below are merely some embodiments of the invention, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort.

[0030] Figure 1 This is a schematic diagram of the structure of a touch display panel according to an embodiment of the present invention;

[0031] Figure 2 This is a schematic diagram of the structure of the first touch electrode according to the first embodiment of the present invention;

[0032] Figure 3 This is a schematic diagram of the structure of the first resistor unit according to the first embodiment of the present invention;

[0033] Figure 4 This is a cross-sectional view of the first resistor unit according to the first embodiment of the present invention;

[0034] Figure 5 This is a schematic diagram of the structure of the first touch electrode according to the second embodiment of the present invention;

[0035] Figure 6 This is a schematic diagram of the structure of the first touch electrode according to the third embodiment of the present invention;

[0036] Figure 7 This is a schematic diagram of the structure of the first resistor unit according to the third embodiment of the present invention;

[0037] Figure 8 This is a schematic diagram of the structure of the first touch electrode according to the fourth embodiment of the present invention;

[0038] Figure 9 This is a schematic diagram of the structure of the first touch electrode according to the fifth embodiment of the present invention;

[0039] Figure 10 This is a schematic diagram of the structure of the first resistor unit according to the fifth embodiment of the present invention;

[0040] Figure 11 This is a schematic diagram of the structure of the second touch electrode according to an embodiment of the present invention.

[0041] Figure Labels

[0042] 10 Display substrate

[0043] 11 First touch electrode

[0044] 12 First connecting part

[0045] 13 First Resistor Unit

[0046] 131 First Interval

[0047] 132 First Overpass

[0048] 21 Second touch electrode

[0049] 22 Second connecting part

[0050] 23 Second Resistor Unit

[0051] 231 Second Interval

[0052] 232 Second Span Bridge Detailed Implementation

[0053] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, they are provided so that this disclosure will be more comprehensive and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

[0054] Furthermore, the accompanying drawings are merely illustrative of this disclosure and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and therefore repeated descriptions of them will be omitted. Some block diagrams shown in the drawings are functional entities and do not necessarily correspond to physically or logically independent entities.

[0055] To address the existing technical problems, the present invention provides a touch display panel, comprising: a plurality of first touch electrode units, each first touch electrode unit including a plurality of first touch electrodes arranged along a first direction, a first connecting portion connecting two adjacent first touch electrodes, and at least one first resistive unit disposed on each first touch electrode. Each first resistive unit includes a first gap separating the first touch electrodes, at least one first bridge, and a first insulating member between the at least one first bridge and the first touch electrode. The first bridge electrically connects two portions of the first touch electrode separated by the first gap. The plurality of first touch electrode units are arranged along a second direction. The touch display panel of the present invention comprises a plurality of second touch electrodes arranged along a second direction, a second connecting portion connecting two adjacent second touch electrodes, and at least one second resistive unit disposed on each second touch electrode. Each second resistive unit includes a second gap separating the second touch electrodes, at least one second bridge, and a second insulating member between the at least one second bridge and the second touch electrode. The second bridge electrically connects two portions of the second touch electrode separated by the second gap. The plurality of second touch electrode units are arranged along the first direction, and the second connecting portion and the first connecting portion are insulated and cross each other. The touch display panel of the present invention, by providing one or more resistive units on each touch electrode unit in two directions, changes the in-plane resistance distribution of the touch electrodes, optimizes the voltage and current distribution, and thereby improves the anti-static capability and reliability of the touch display panel.

[0056] The structure of the touch display panel of the present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments are not intended to limit the scope of protection of the present invention.

[0057] Figure 1This is a schematic diagram of the structure of a touch display panel according to an embodiment of the present invention. Specifically, the touch display panel includes:

[0058] Multiple first touch electrode units, each first touch electrode unit including multiple first touch electrodes 11 arranged along a first direction, a first connection portion 12 connecting two adjacent first touch electrodes 11, and a first resistor unit 13, the first resistor unit 13 including a first gap 131 separating the first touch electrodes 11 and a first bridge 132, the first bridge 132 electrically connecting the two portions of the first touch electrode separated by the first gap 131, the multiple first touch electrode units being arranged along a second direction; and / or

[0059] A plurality of second touch electrode units, each second touch electrode unit including a plurality of second touch electrodes 21 arranged along the second direction, a second connection portion 22 connecting two adjacent second touch electrodes 21 and a second resistor unit 23, the second resistor unit 23 including a second gap separating the second touch electrodes 23 and a second bridge, the second bridge electrically connecting the two portions of the second touch electrodes separated by the second gap, the plurality of second touch electrode units arranged along the first direction, the second connection portion 22 and the first connection portion 23 being insulated from each other.

[0060] The materials of the first touch electrode 11, the first connecting part 12, the second touch electrode 21, and the second connecting part 22 can be selected from any one or more of transparent conductive oxides, such as indium tin oxide (ITO), indium zinc oxide (IZO), and indium gallium zinc oxide (IGZO).

[0061] It should be noted that, Figure 1 In this embodiment, the first direction can be the x-direction, and the second direction can be the y-direction perpendicular to the first direction. The first direction may also not be perpendicular to the second direction; this invention does not limit this. The first touch electrode 11 and the second touch electrode 21 are arranged alternately in the xy-plane. The second connecting portion 22 and the first connecting portion 12 intersect insulated from each other, and a capacitor is formed at their intersection for sensing the user's touch position. The insulated intersection can be achieved by providing a dielectric layer between them, which can be made of an inorganic material or an organic material with insulating properties. One of the second connecting portion 22 and the first connecting portion 12 is then electrically connected to the corresponding touch electrode (21 or 11) via a conductive bridge. The touch electrode units in the two directions can respectively serve as the touch driving electrode (TX) and the touch sensing electrode (RX) of the touch display panel.

[0062] The following uses the first touch electrode in the first direction as an example to further illustrate the structural schematic diagram of the first touch electrode and the first resistor unit.

[0063] Figure 2 , Figure 7 , Figure 8 , Figure 10 and Figure 11 These are schematic diagrams of the structure of the first touch electrode according to different embodiments of the present invention, wherein the first gap 131 separates the first touch electrode 11 in the first direction; the first gap 131 can be a straight structure, such as... Figure 2 , Figure 7 , Figure 8 and Figure 10 In some embodiments, the first gap 131 can also be an L-shaped structure, such as... Figure 11 This is one embodiment. In some other embodiments, the first gap 131 is not limited to the straight line or broken line described above, but can be different shapes such as an arc.

[0064] Figure 2 In the first embodiment, the first touch electrode unit includes a plurality of first resistor units 13, and each first resistor unit 13 is disposed at a first touch electrode 11, that is, the number of first resistor units 13 is the same as the number of first touch electrodes 11. The first resistor unit 13, i.e., the first gap 131 therein, can be disposed in the region of the first touch electrode 11 near the first connecting portion 12. Figure 3 and Figure 4 These are a schematic diagram and a cross-sectional view of the first resistor unit in the first embodiment, respectively. Figure 4 The display substrate 10 in the context refers to the substrate composed of multiple functional layers below the touch layer in a touch display panel, including a flexible substrate, a driving circuit layer, a light-emitting layer, and a polarizing layer. In the first embodiment, the first resistor unit includes a first gap 131 and a first bridge 132. The first gap 131 has a linear structure, such as... Figure 4 As shown, the first gap 131 can be a straight groove on the first touch electrode 11, and the first gap 131 divides the first touch electrode 11 into a non-conductive region a and a region b. The non-conductive regions a and b of the first touch electrode 11 are electrically connected by a first bridge 132, which can be a metal bridge or a bridge formed of other materials with excellent conductivity.

[0065] Figure 5The diagram below shows the structure of the first touch electrode according to the second embodiment of the present invention. The first touch electrode unit includes a first resistor unit 13, wherein the first resistor unit includes a first gap 131 and a first bridge 132. Unlike the first embodiment, the first gap 131 is disposed at the center line of the first touch electrode 11.

[0066] Figure 6 and Figure 7 These are schematic diagrams of the first touch electrode and the first resistive unit according to the third embodiment of the present invention. The first resistive unit 13 includes a first gap 131 and two first bridges 132. Unlike the first embodiment, the first resistive unit 13 includes a different number of first bridges 132. In other embodiments, the first resistive unit 13 may also include multiple first bridges 13, as will be discussed later. Figure 8 and Figure 9 In this embodiment, a plurality of first bridges 13 can be uniformly distributed along the extension direction of the first gap 131, and the plurality of first bridges 13 can improve the uniformity of current and voltage distribution between the first touch electrodes in region a and region b. Preferably, the first bridge 132 can be perpendicular to the first gap 131.

[0067] Figure 8 This is a schematic diagram of the structure of the first touch electrode according to the fourth embodiment of the present invention. The first touch electrode unit includes two first resistor units 13, and two first gaps 131 can be respectively disposed on both sides of the first touch electrode 11 near the first connecting portion 12. Correspondingly, the two first gaps 131 divide the first touch electrode 11 into non-conductive regions a, b, and c.

[0068] Figure 9 and Figure 10 These are schematic diagrams of the first touch electrode and the first resistor unit according to the fifth embodiment of the present invention; wherein, the first resistor unit 13 includes a first gap 131 and a plurality of first bridges 132, and the first gap 131 is an L-shaped structure.

[0069] In this invention, the first gap 131 separates the first touch electrode 11 in the first direction; therefore, for first gaps 131 of different shapes, preferably, the angle between the line connecting the two endpoints of the first gap and the second direction is less than 60 degrees.

[0070] In this invention, each first touch electrode of the touch display panel is provided with one or more first resistive units 13. Through the cooperation between the first gap 131 and the first bridge 132, the conductivity of the first touch electrode unit in the first direction is reduced, thereby reducing static charge generated in the touch display panel due to friction or other factors and improving the antistatic properties of the touch display panel. Furthermore, by designing the number of first resistive units 13 included in the first touch electrode unit, the shape, number, position, and width of the first gap 131 of the first resistive units 13, and the material, shape, number, position, and width of the first bridge 132, etc., can be set according to the actual resistance distribution requirements of the touch electrodes of the display panel in the first direction.

[0071] Figure 11 This is a schematic diagram of the structure of a second touch electrode according to an embodiment of the present invention. Similar to the first touch electrode, the second touch electrode unit may include one or more second resistive units 23 disposed on each of the second touch electrodes 21. Each second resistive unit 23 includes a second gap 231 and one or more second bridges 232. The second bridge 232 may be a metal bridge or a bridge formed of other materials with excellent conductivity. The second bridge 232 may be perpendicular to the second gap 231.

[0072] The second gap 231 separates the second touch electrode 21 in the second direction. The second gap 231 can be a straight structure, an L-shaped structure or other structures. Preferably, the angle between the line connecting the two endpoints of the second gap 231 and the first direction is less than 60 degrees.

[0073] The second gap 231 is disposed on the side of the second touch electrode 21 near the second connection portion 22, or the second gap 231 is disposed at the center line of the second touch electrode 21.

[0074] When the second touch electrode unit includes two second resistor units 23 disposed on each of the second touch electrodes, the two second gaps 231 are respectively disposed on both sides of the second touch electrode 21 near the second connection portion 22.

[0075] Similarly, in this invention, each second touch electrode of the touch display panel is provided with one or more second resistive units 23. Through the cooperation between the second gap 231 and the second bridge 232, the conductivity of the second touch electrode unit in the second direction is reduced, thereby reducing static charge generated in the touch display panel due to friction or other factors and improving the antistatic properties of the touch display panel. Furthermore, by designing the number of second resistive units 23 included in the second touch electrode unit, the shape, number, position, and width of the second gap 231 of the second resistive units 23, and the material, shape, number, position, and width of the second bridge 232, etc., can be set according to the actual resistance distribution requirements of the touch electrodes in the second direction of the display panel. By simultaneously designing the resistance distribution in the first and / or second directions, this invention can optimize the voltage and current distribution throughout the entire touch display panel, improving the antistatic properties of the touch display panel and enhancing the overall reliability of the display panel.

[0076] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention and should not be construed as limiting the specific implementation of the invention to these descriptions. It will be apparent to those skilled in the art that this application is not limited to the details of the above exemplary embodiments, and that the application can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this application is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be encompassed within this application. No reference numerals in the claims should be construed as limiting the scope of the claims. Furthermore, it is clear that the word "comprising" does not exclude other units or steps, and the singular does not exclude the plural. Multiple units or devices recited in the apparatus claims may also be implemented by a single unit or device through software or hardware. It should be understood that terms such as "down" or "up," "downward" or "upward," etc., are used to describe the position of features shown in the figures with reference to the exemplary embodiments; words such as "first," "second," etc., are used to indicate names and do not indicate any particular order.

Claims

1. A touch display panel, characterized in that, include: A plurality of first touch electrode units, each first touch electrode unit comprising a plurality of first touch electrodes arranged along a first direction, a first connecting portion connecting two adjacent first touch electrodes, and at least one first resistive unit disposed on each first touch electrode. Each first resistive unit includes a first gap separating the first touch electrodes and at least one first bridge, the first bridge electrically connecting two portions of the first touch electrode separated by the first gap. The plurality of first touch electrode units are arranged along a second direction; and / or A plurality of second touch electrode units, each second touch electrode unit including a plurality of second touch electrodes arranged along a second direction, a second connecting portion connecting two adjacent second touch electrodes, and at least one second resistor unit disposed on each second touch electrode. The second resistor unit includes a second gap separating the second touch electrodes and at least one second bridge. The second bridge electrically connects two portions of the second touch electrode separated by the second gap. The plurality of second touch electrode units are arranged along the first direction, and the second connecting portion and the first connecting portion are insulated from each other.

2. The touch display panel according to claim 1, characterized in that, The first gap separates the first touch electrode in the first direction; The second gap separates the second touch electrode in the second direction.

3. The touch display panel according to claim 2, characterized in that, The angle between the line connecting the two endpoints of the first gap and the second direction is less than 60 degrees; The angle between the line connecting the two endpoints of the second gap and the first direction is less than 60 degrees.

4. The touch display panel according to claim 2, characterized in that, The first gap is a straight structure or an L-shaped structure; The second gap is a straight structure or an L-shaped structure.

5. The touch display panel according to claim 2, characterized in that, The first touch electrode unit includes a first resistor unit disposed on each of the first touch electrodes; The second touch electrode unit includes a second resistor unit disposed on each of the second touch electrodes.

6. The touch display panel according to claim 5, characterized in that, The first gap is disposed in the area of ​​the first touch electrode near the first connection portion, or the first gap is disposed in the center line of the first touch electrode; The second gap is disposed on the side of the second touch electrode near the second connection portion, or the second gap is disposed on the center line of the second touch electrode.

7. The touch display panel according to claim 2, characterized in that, The first touch electrode unit includes two first resistor units disposed on each of the first touch electrodes; The second touch electrode unit includes two second resistor units disposed on each of the second touch electrodes.

8. The touch display panel according to claim 7, characterized in that, The two first gaps are respectively disposed on both sides of the first touch electrode near the first connection portion; The two second gaps are respectively disposed on both sides of the second touch electrode near the second connection portion.

9. The touch display panel according to claim 2, characterized in that, The first resistor unit includes a plurality of the first bridges; and / or The second resistor unit includes a plurality of second bridges.

10. The touch display panel according to claim 1, characterized in that, The first bridge is perpendicular to the first gap; The second bridge is perpendicular to the second gap.

11. The touch display panel according to claim 1, characterized in that, The first bridge is a metal bridge; The second bridge is a metal bridge.

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