TW202018471A - Touch display panel - Google Patents

Abstract

A touch display panel includes a pixel array substrate having a display area and a non-display area, an integrated circuit disposed in the non-display area, a plurality of touch switches disposed in the non-display area, and a plurality of touch electrode groups disposed in the display area. The touch switches are located on a different side than the integrated circuit. Each of the touch electrode group includes a plurality of touch electrodes. The touch electrode groups include at least one of a first touch electrode group corresponding to a first partition of the display area, and at least one of a second touch electrode group corresponding to a second partition of the display area. A plurality of first touch electrodes of the first touch electrode group respectively electrically connect to the corresponding touch switch and integrated circuit. A plurality of second touch electrodes of the second touch electrode group respectively electrically connect to the corresponding integrated circuit.

Description

Touch display panel

The invention relates to a display panel, and in particular to a touch display panel.

According to the position of the touch part, the touch display panel can be divided into out-cell, on-cell and in-cell. Among them, the in-cell touch display panel has the advantage of thin thickness, and is widely used in high-end electronic products.

The display portion of the in-cell touch display panel may include multiple common electrodes. The multiple common electrodes are divided into multiple groups, and can be used as multiple touch electrodes during the touch sensing period. Taking a self-contained in-cell touch device as an example, in general, some manufacturers electrically connect multiple touch electrodes to integrated circuits (eg, chips) and multiple touch electrodes through multiple touch signal lines, respectively. Control switch (for example: thin film transistor). However, in order for the touch electrodes to be properly charged by the touch switch, the touch switch needs to have a considerable size and number, and the frame cannot be further reduced, which is detrimental to the visual effect of the in-cell touch display panel.

In addition, due to the influence of the RC loading effect, the voltage recovery capability of the common electrode close to the integrated circuit and the common electrode far from the integrated circuit is different, resulting in color difference and degrading the display quality of the in-cell touch display panel.

The invention provides a touch display panel, which can improve visual effects and enhance display quality.

The touch display panel of the present invention includes a pixel array substrate having a display area and a non-display area, an integrated circuit is disposed in the non-display area, and a plurality of touch switches are disposed in the non-display area and are located on different sides from the integrated circuit And multiple touch electrode groups are disposed in the display area. Each touch electrode group includes multiple touch electrodes. The touch electrode groups include at least one first touch electrode group corresponding to the first partition of the display area, and at least one second touch electrode group corresponding to the second partition of the display area. The plurality of first touch electrodes in at least one first touch electrode group are electrically connected to the corresponding touch switches and integrated circuits, respectively. The plurality of second touch electrodes in the second touch electrode group are electrically connected to corresponding integrated circuits, respectively.

Based on the above, in a touch display panel according to an embodiment of the present invention, since the first touch electrode can be electrically connected to the corresponding touch switch and integrated circuit through the first touch signal line, the second touch electrode can pass through the second The touch signal line is directly electrically connected to the integrated circuit. Under the above configuration, only part of the touch electrodes are electrically connected to the touch switch. In this way, the number and space of the required touch switches can be reduced, the frame can be further reduced, the visual effect can be improved, and the display quality of the touch display panel can be improved. In addition, the first touch electrode can be electrically connected to the touch switch to improve the voltage recovery capability to a voltage recovery capability similar to that of the second touch electrode. In this way, the influence of the resistance-capacitance loading effect can be reduced, reducing the occurrence of chromatic aberration and improving the display quality of the touch display panel.

In order to make the above-mentioned features and advantages of the present invention more obvious and understandable, the embodiments are specifically described below in conjunction with the accompanying drawings for detailed description as follows.

In the drawings, the thickness of layers, films, panels, regions, etc., are exaggerated for clarity. Throughout the specification, the same reference numerals denote the same elements. It should be understood that when an element such as a layer, film, region, or substrate is referred to as being “on” or “connected to” another element, it can be directly on or connected to the other element, or Intermediate elements may also be present. In contrast, when an element is referred to as being "directly on" or "directly connected to" another element, there are no intervening elements present. As used herein, "connected" may refer to physical and/or electrical connections. Furthermore, "electrical connection" or "coupling" may be that there are other elements between the two elements.

It should be understood that although the terms "first", "second", "third", etc. may be used herein to describe various elements, components, regions, layers, and/or sections, these elements, components, regions, and/or Or part should not be limited by these terms. These terms are only used to distinguish one element, component, region, layer or section from another element, component, region, layer or section. Accordingly, "first element", "component", "region", "layer" or "portion" discussed below may be referred to as a second element, component, region, layer or section without departing from the teachings herein.

Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by those of ordinary skill in the art to which this invention belongs. It will be further understood that terms such as those defined in commonly used dictionaries should be interpreted as having meanings consistent with their meanings in the context of the relevant technology and the present invention, and will not be interpreted as idealized or excessive Formal meaning unless explicitly defined as such in this article.

FIG. 1A is a schematic top view of a touch display panel according to an embodiment of the present invention. For convenience of description and observation, FIG. 1A only schematically shows some components. FIG. 1B is a schematic cross-sectional view of the touch display panel of FIG. 1A along the cross-sectional line A-A'. Please refer to FIGS. 1A and 1B. In this embodiment, the touch display panel 10 includes a pixel array substrate 100 having a display area 12 and a non-display area 11. The integrated circuit 120 is disposed in the non-display area 11. The control switch 200 is disposed in the non-display area 11 and the multiple touch electrode groups 300 are disposed in the display area 12. In this embodiment, multiple touch switches 200 can be arranged in one or more rows to define a touch switch group 220. The touch switches 200 in the touch switch group 220 may be electrically connected or independent of each other, and the invention is not limited thereto. The touch switch 200 is located on a different side from the integrated circuit 120. In this embodiment, the integrated circuit 120 is, for example, a driving chip, but the invention is not limited thereto.

Please refer to FIGS. 1A and 1B. In this embodiment, the touch display panel 10 may be an in-cell touch display panel. For example, in this embodiment, the touch display panel 10 further includes a plurality of pixel structures SP respectively disposed in the display area 12. The touch electrode group 300 includes a plurality of touch electrodes TE, and the touch electrodes TE can serve as a common electrode (COM) of the pixel structure SP and are selectively disposed on the pixel array substrate 100. However, the present invention is not limited to this. In another embodiment, the pixel structure SP and the touch electrode TE may also be disposed on two opposing substrates, or disposed inside and outside the cell, respectively Surface; that is, the touch display panel including the pixel structure SP and the touch electrode TE may also be another type of in-cell touch display panel, or an on-cell touch display panel.

In this embodiment, the pixel array substrate 100 is exemplified by a substrate formed with a plurality of pixel structures SP. The material of the pixel array substrate 100 may be glass, quartz, organic polymer, opaque/reflective material (for example: conductive material, metal, wafer, ceramic or other applicable materials) or other applicable materials. If a conductive material or metal is used, a layer of insulating material (not shown) is covered on the substrate 100 to avoid short circuit problems.

In this embodiment, each pixel structure SP includes a thin film transistor T and a pixel electrode PE. The pixel electrode PE is electrically connected to the thin film transistor T. In this embodiment, the material of the pixel electrode PE includes a transparent conductive material, such as metal oxides such as indium tin oxide, indium zinc oxide, aluminum tin oxide, aluminum zinc oxide, or indium germanium zinc oxide. In addition, the thin film transistor T is, for example, low temperature poly-Si (LTPS) or amorphous silicon thin-film transistor (a-Si) or other suitable transistors, which is not used in the present invention limit. The thin film transistor T includes a channel layer CH, a gate G, and a source S and a drain D. In this embodiment, the pixel electrode PE is electrically connected to the drain D.

As shown in FIGS. 1A and 1B, the touch electrodes TE are electrically separated from each other and the touch electrodes TE are electrically connected to the touch signal lines (for example, the first touch signal line TL1 or the second touch signal line TL2). 1B, in the direction perpendicular to the pixel array substrate 100, the touch electrodes TE (for example: the first touch electrodes 312) partially overlap the pixel electrodes PE of each pixel structure SP, and the first touch electrodes 312 The first touch signal line TL1 is electrically connected. For example, the touch electrode TE applied as a common electrode is located between the pixel electrode PE of the pixel structure SP and the thin film transistor T. The electric field between the pixel electrode PE and the touch electrode TE can drive a part of the display medium layer (for example: liquid crystal layer; not shown) on each pixel structure SP, so that the touch display panel 10 displays a picture. In other words, the touch display panel 10 of this embodiment may be a fringe-field switching (FFS) mode touch display panel. However, the present invention is not limited to this. In other embodiments, the touch display panel may also be a display panel in other suitable modes. In some embodiments, the touch electrodes can also be arranged on the pixel electrodes (COM on top).

It is worth noting that in this embodiment, in addition to the touch electrodes TE being used for display, multiple touch electrodes TE adjacent to and connected to each other can also define multiple touch electrode groups 300 to sense Measure touch action. The touch electrode group 300 includes at least one first touch electrode group 310 corresponding to the first partition 14 of the display area 12 and at least one second touch electrode group 320 corresponding to the second partition 16 of the display area 12. In this embodiment, the first touch electrode group 310 is defined by a plurality of first touch electrodes 312, and the second touch electrode group 320 is defined by a plurality of second touch electrodes 322. In the display area 12, at least one first touch electrode group 310 may be one, two, or more than two. The at least one second touch electrode group 320 may be one, two, or more than two, and the invention is not limited thereto. In this embodiment, the touch switches 200 and the integrated circuit 120 in the touch switch group 220 are respectively located on opposite sides of the pixel array substrate 100. For example, the first partition 14 in the display area 12 is adjacent to the touch switch group 220, and the second partition 16 is adjacent to the integrated circuit 120.

In this embodiment, the long axis of the first touch electrode group 310 in the first partition 14 is parallel to the short side 12A of the display area 12, and the first touch electrode group 310 is arranged in multiples along the direction in which the short side 12A extends Row, but the invention is not limited to this. Relative to the second touch electrode group 320, the first touch electrode group 310 is adjacent to the touch switch 200. The long axis of the second touch electrode group 320 in the second partition 16 is parallel to the short side 12A, and the second touch electrode group 320 is arranged in multiple rows along the direction in which the short side 12A extends, but the invention is not limited thereto . The second touch electrode group 320 is adjacent to the integrated circuit 120 relative to the first touch electrode group 310.

In this embodiment, the touch display panel 10 further includes a plurality of first touch signal lines TL1 and a plurality of second touch signal lines TL2. Each first touch signal line TL1 can electrically connect each touch electrode 312 to the touch switch 200 and the integrated circuit 120. For example, the first touch signal line TL1 includes a first segment 410 and a second segment 420. The first segment 410 can electrically connect the touch switch 200 to the first touch electrode 312 in the first touch electrode group 310. The second section 420 can electrically connect the first touch electrode 312 to the integrated circuit 120. In this embodiment, each second touch signal line TL2 can electrically connect each second touch electrode 322 to the integrated circuit 120. In some embodiments, the first touch signal line TL1 further includes a third segment 430. The third segment 430 electrically connects the first segment 410 to the first touch electrode 312. In this embodiment, the first segment 410 and the third segment 430 are, for example, an integrated structure, but the invention is not limited thereto. In terms of the manufacturing process, the third section 430 and the first section 410 may be formed by the same or different manufacturing steps, respectively, and the invention is not limited thereto.

Under the above configuration, the plurality of first touch electrodes 312 in the first touch electrode group 310 are electrically connected to the corresponding touch switches 200 (for example, FIG. 1A shows the first touch electrodes 312 electrically connected To the touch switch 200 in the touch switch group 220) and the integrated circuit 120. The plurality of second touch electrodes 322 in the second touch electrode group 320 are directly and electrically connected to the corresponding integrated circuits 120 respectively. In this way, only a part of the touch electrode group 300, such as the first touch electrode group 310, can be electrically connected to the touch switch 200 and the integrated circuit 120. Therefore, the touch display panel 10 can reduce the number of touch switches 200 required, reduce the space occupied by the touch switches 200, and further reduce the frame, thereby improving the visual effect and the display quality of the touch display panel 10.

In addition, since the first touch electrode group 310 in the first partition 14 is adjacent to the touch switch group 220 and away from the integrated circuit 120, the second touch electrode group 320 in the second partition 16 is adjacent to the integrated circuit 120, and the first touch The first touch electrode 312 in the control electrode group 310 is electrically connected to the adjacent touch switch 200, so the touch switch 200 can provide a predetermined voltage to the first touch electrode 312. In this way, the touch switch 200 can compensate for the reduced voltage recovery capability of the first touch electrode 312 due to the resistance-capacitance loading effect. In other words, the first touch electrode 312 far from the integrated circuit 120 can improve the voltage recovery capability through the touch switch 200 to a voltage recovery capability similar to that of the second touch electrode group 322 adjacent to the integrated circuit 120. Under the above configuration, the touch switch 200 can reduce the influence of the resistive and capacitive loading effect on the touch electrode TE, reduce the occurrence of chromatic aberration, and improve the display quality of the touch display panel 10.

In short, since the first touch electrode 312 is adjacent to the touch switch 200 and electrically connected to the corresponding touch switch 200 and the integrated circuit 120 through the first touch signal line TL1, the second touch electrode 322 is adjacent to the integrated circuit 120 And it is directly electrically connected to the integrated circuit 120 through the second touch signal line TL2. Under the above configuration, only the first touch electrodes 312 in the first touch electrode group 310 are electrically connected to the touch switch 200. In this way, the number and space of the required touch switches 200 can be reduced, the frame can be further reduced, the visual effect can be improved, and the display quality of the touch display panel 10 can be improved. In addition, the first touch electrode 312 adjacent to the touch switch 200 and away from the integrated circuit 120 can be electrically connected to the touch switch 200 to enhance the voltage recovery capability to the second touch electrode 322 similar to the adjacent integrated circuit 120 Voltage recovery capability. Under the above configuration, the touch switch 200 can reduce the influence of the resistive and capacitive loading effect on the touch electrode TE, reduce the occurrence of chromatic aberration, and improve the display quality of the touch display panel 10.

The following embodiments continue to use the element numbers and partial contents of the previous embodiments, wherein the same reference numerals are used to denote the same or similar elements. For the description of the parts that omit the same technical content, please refer to the previous embodiments. Repeat the details.

FIG. 2 is a schematic top view of a touch display panel according to another embodiment of the invention. The touch display panel 10A shown in this embodiment is similar to the touch display panel 10 shown in FIG. 1A. The main difference is that the width of the first segment 410A of the first touch signal line TL1A is greater than the width of the second segment 420A . In this embodiment, the width of the third section 430A may be similar to the width of the first section 410A and larger than the width of the second section 420A, but the invention is not limited thereto. The width of the first section 410A is greater than the width of the second touch signal line TL2. Under the above configuration, since the line width of the first segment 410A electrically connecting the first touch electrode 312 to the touch switch 200 is increased, the influence of the resistance capacitance loading effect on the touch electrode TE can be further reduced The chromatic aberration occurs to improve the display quality of the touch display panel 10A.

FIG. 3A is a schematic top view of a touch display panel according to another embodiment of the invention. The touch display panel 10A′ shown in this embodiment is similar to the touch display panel 10A shown in FIG. 2, and the main difference is that, compared to the touch display panel 10A of FIG. 2, the touch display panel 10A′ The touch switch 200 is located on the lower sides of the opposite sides of the pixel array substrate 100, and the integrated circuit 120 is located on the upper sides of the opposite sides of the pixel array substrate 100. The first partition 14 is disposed adjacent to the touch switch 200, and the first touch electrodes 312 in the first touch electrode group 310 in the first partition 14 are electrically connected to the touch switch 200 and the integrated circuit 120. The second partition 16 is disposed adjacent to the integrated circuit 120, and the second touch electrodes 322 in the second touch electrode group 320 in the second partition 16 are directly electrically connected to the integrated circuit 120. In this way, the touch display panel 10A' can obtain technical effects similar to those of the above embodiments.

FIG. 3B is a schematic top view of a touch display panel according to another embodiment of the invention. The touch display panel 10B shown in this embodiment is similar to the touch display panel 10A shown in FIG. 2, the main difference is that the ratio of the area occupied by the first partition 14B to the total area of the display area 12 is 1/3 To 2/3. The ratio of the area occupied by the second partition 16B to the total area of the display area 12 is 1/3 to 2/3. For example, in this embodiment, the first partition 14B is 1/3 of the total area of the display area 12 and the second partition 16B is 2/3 of the total area of the display area 12. Under the above configuration, the user can select the number of the first touch electrode group 310 and the second touch electrode group 320 according to design requirements to define the display area occupied by the first partition 14B and the second partition 16B The ratio of the total area of 12. In this way, the touch display panel 10B can obtain similar technical effects as the above-mentioned embodiments, and can further increase the design margin.

In this embodiment, the width of the first segment 410B and the third segment 430B of the first touch signal line TL1B of the touch display panel 10B is greater than the width of the second segment 420B and/or the width of the second touch signal line TL2 , But the invention is not limited to this. In other embodiments, the width of the first segment 410B may be the same as the width of the second segment 420B, and the width of the third segment 430B may be the same as the width of the second segment 420B. The invention is not limited thereto.

FIG. 3C is a schematic top view of a touch display panel according to another embodiment of the invention. The touch display panel 10C shown in this embodiment is similar to the touch display panel 10A shown in FIG. 2, the main difference is that the long axis of the first partition 14C is parallel to the long side 12B of the display area 12, and the first partition 14C The opposite ends of the corresponding to the touch switch 200 and the integrated circuit 120, respectively. The long axis of the second partition 16C is parallel to the long side 12B of the display area 12, and the opposite ends of the second partition 16C correspond to the touch switch 200 and the integrated circuit 120, respectively. The first touch electrode groups 310 in the first partition 14C are arranged along the long side 12B of the display area 12 from one end adjacent to the touch switch group 220 to the opposite end adjacent to the integrated circuit 120. The second touch electrode groups 320 in the second partition 16C are arranged along the long side 12B of the display area 12 from one end adjacent to the touch switch group 220 to the opposite end adjacent to the integrated circuit 120. In this embodiment, the width of the first touch signal line TL1C is greater than the width of the second touch signal line TL2. For example, the widths of the first segment 410C, the second segment 420C, and the third segment 430C of the first touch signal line TL1C may be the same and larger than the width of the second touch signal line TL2, but the invention is not limited to this . In other embodiments, the width of the first touch signal line TL1C may also be the same as the width of the second touch signal line TL2, or the width of the first segment 410C is greater than the width of the second segment 420C and/or the second touch signal line The width of TL2. In this way, the touch display panel 10C can obtain technical effects similar to those of the foregoing embodiments.

FIG. 3D is a schematic top view of a touch display panel according to another embodiment of the invention. The touch display panel 10D shown in this embodiment is similar to the touch display panel 10C shown in FIG. 3C, and the main difference is that, compared to the touch display panel 10C of FIG. 3C, the touch of the touch display panel 10D The switch 200 is located on the lower side of the opposite sides of the pixel array substrate 100, and the integrated circuit 120 is located on the upper side of the opposite sides of the pixel array substrate 100. The first partition 14C of the touch display panel 10D is located on the right side of the pixel array substrate 100, and the second partition 16C is located on the left side of the pixel array substrate 100. The first touch electrode group 310 corresponds to the first partition 14C, and the second touch electrode group 320 corresponds to the second partition 16C. The first touch electrodes 312 in the first touch electrode group 310 are electrically connected to the touch switch 200 and the integrated circuit 120. The second touch electrode group 320 is directly electrically connected to the integrated circuit 120. In this embodiment, the widths of the first segment 410D, the second segment 420D, and the third segment 430D of the first touch signal line TL1D may be the same and larger than the width of the second touch signal line TL2, but the present invention does not use this Limited. In other embodiments, the width of the first touch signal line TL1D may also be the same as the width of the second touch signal line TL2, or the width of the first segment 410D is greater than the width of the second segment 420D and/or the second touch signal line The width of TL2. In this way, the touch display panel 10D can obtain technical effects similar to those of the foregoing embodiments.

FIG. 3E is a schematic top view of a touch display panel according to another embodiment of the invention. The touch display panel 10E shown in this embodiment is similar to the touch display panel 10A shown in FIG. 2, the main difference is that: in the display area 12, there are a plurality of first touch electrode groups 310, and the second touch The electrode group 320 is plural. The plurality of first touch electrodes 310 are arranged in a plurality of horizontal rows along the direction of the short side 12A to correspond to the plurality of first partitions 14. The plurality of second touch electrodes 320 are arranged in a plurality of horizontal rows along the direction of the short side 12A to correspond to the plurality of second partitions 16. The long axis of the first touch electrode group 310 in each first partition 14 is parallel to the short side 12A of the display area 12. The long axis of the second touch electrode group 320 in each second partition 16 is parallel to the short side 12A of the display area 12. The first touch electrode groups 310 and the second touch electrode groups 320 are alternately arranged along the long side 12B of the display area 12. In other words, in the extending direction of the long side 12B, a horizontally arranged second touch electrode group 320 is sandwiched between two adjacent horizontally arranged first touch electrode groups 310, but the present invention does not take this as limit. In other embodiments, in the extending direction of the long side 12B, a plurality of horizontally arranged second touch electrode groups 320 may be sandwiched between two adjacent horizontally arranged first touch electrode groups 310, or adjacent A plurality of horizontal first touch electrode groups 310 may be sandwiched between the two horizontal second touch electrode groups 320.

In this embodiment, the width of the first segment 410E of the first touch signal line TL1E is the same as the width of the second segment 420E. The third segment 430E electrically connects the first segment 410E to the first touch electrode 312, and the width of the third segment 430E is greater than the width of the first segment 410E. The width of the third segment 430E is greater than the width of the second touch signal line TL2, but the invention is not limited thereto. In this way, the touch display panel 10E can obtain technical effects similar to those of the foregoing embodiments.

FIG. 3F is a schematic top view of a touch display panel according to another embodiment of the invention. The touch display panel 10F shown in this embodiment is similar to the touch display panel 10A shown in FIG. 2, the main difference is that: in the display area 12, there are multiple first touch electrode groups 310, and the second touch The electrode group 320 is plural. The long axis of each first partition 14C is parallel to the long side 12B of the display area 12, and the opposite ends of each first partition 14C correspond to the touch switch 200 and the integrated circuit 120, respectively. The long axis of each second partition 16C is parallel to the long side 12B of the display area 12, and the opposite ends of each second partition 16C correspond to the touch switch 200 and the integrated circuit 120, respectively. The first touch electrode groups 310 in each first partition 14C are arranged along the long side 12B of the display area 12 from one end adjacent to the touch switch group 220 to the opposite end adjacent to the integrated circuit 120. The second touch electrode groups 320 in each second partition 16C are arranged along the long side 12B of the display area 12 from one end adjacent to the touch switch group 220 to the opposite end adjacent to the integrated circuit 120. In other words, the plurality of first touch electrodes 310 are arranged in a plurality of straight rows along the direction of the long side 12B to correspond to the plurality of first partitions 14C. The plurality of second touch electrodes 320 are arranged in a plurality of straight rows along the direction of the long side 12B to correspond to the plurality of second partitions 16C.

In this embodiment, the first touch electrode groups 310 and the second touch electrode groups 320 are staggered along the short side 12A of the display area 12. In other words, in the extending direction of the short side 12A, a second row of second touch electrode groups 320 is sandwiched between two adjacent rows of first touch electrode groups 310, but the present invention does not use this as limit. In other embodiments, in the extending direction of the short side 12A, a plurality of second rows of second touch electrode groups 320 may be sandwiched between two adjacent rows of first touch electrode groups 310, or adjacent A plurality of first touch electrode groups 310 in a straight row may be sandwiched between the two second touch electrode groups 320 in a row.

In this embodiment, the width of the first touch signal line TL1F is greater than the width of the second touch signal line TL2. For example, the widths of the first segment 410F, the second segment 420F, and the third segment 430F of the first touch signal line TL1F may be the same and larger than the width of the second touch signal line TL2, but the invention is not limited to this . In other embodiments, the width of the first touch signal line TL1F may also be the same as the width of the second touch signal line TL2, or the width of the first segment 410F is greater than the width of the second segment 420F and/or the second touch signal line The width of TL2. In this way, the touch display panel 10C can obtain technical effects similar to those of the foregoing embodiments.

4 is a schematic top view of a touch display panel according to still another embodiment of the invention. The touch display panel 10G shown in this embodiment is similar to the touch display panel 10E shown in FIG. 3E. The main difference is that the width of the first segment 410G of the first touch signal line TL1G is greater than the width of the second segment 420G And the width of the first segment 410G is greater than the width of the second touch signal line TL2. In this embodiment, the width of the first segment 410G and the third segment 430G may be the same, but the invention is not limited thereto. In this way, the touch display panel 10G can obtain technical effects similar to those of the foregoing embodiments.

In summary, in the touch display panel according to an embodiment of the present invention, since the first touch electrode can be electrically connected to the corresponding touch switch and integrated circuit through the first touch signal line, the second touch electrode can pass through The second touch signal line is directly electrically connected to the integrated circuit. Under the above configuration, only part of the touch electrodes are electrically connected to the touch switch. In this way, the number and space of the required touch switches can be reduced, the frame can be further reduced, the visual effect can be improved, and the display quality of the touch display panel can be improved. In addition, the first touch electrode can be electrically connected to the touch switch to improve the voltage recovery capability to be similar to that of the second touch electrode. In addition, the width of the first touch signal line may be greater than the width of the second touch signal line to increase the line width of the signal line segment connecting the first touch electrode to the touch switch. Under the above configuration, the touch switch can reduce the influence of the resistive and capacitive loading effect on the touch electrode, reduce the occurrence of color difference, and improve the display quality of the touch display panel.

Although the present invention has been disclosed as above with examples, it is not intended to limit the present invention. Any person with ordinary knowledge in the technical field can make some changes and modifications without departing from the spirit and scope of the present invention. The scope of protection of the present invention shall be subject to the scope defined in the appended patent application.

10, 10A, 10A', 10B, 10C, 10D, 10E, 10F, 10G: touch display panel 11: non-display area 12: display area 12A: short side 12B: long side 14, 14B, 14C: first partition 16 , 16B, 16C: second partition 100: pixel array substrate 120: integrated circuit 200: touch switch 220: touch switch group 300: touch electrode group 310: first touch electrode group 312: first touch electrode 320: Second touch electrode group 322: Second touch electrodes 410, 410A, 410B, 410C, 410D, 410E, 410F, 410G: First segment 420, 420A, 420B, 420C, 420D, 420E, 420F, 420G: Second segment 430, 430A, 430B, 430C, 430D, 430E, 430F, 430G: third segment CH: channel layer D: drain G: gate PE: pixel electrode S: source SP: pixel structure T: Thin film transistor TE: touch electrodes TL1, TL1A, TL1B, TL1C, TL1D, TL1E, TL1F, TL1G: first touch signal line TL2: second touch signal line A-A': section line

FIG. 1A is a schematic top view of a touch display panel according to an embodiment of the invention. FIG. 1B is a schematic cross-sectional view of the touch display panel of FIG. 1A along the cross-sectional line A-A'. FIG. 2 is a schematic top view of a touch display panel according to another embodiment of the invention. FIG. 3A is a schematic top view of a touch display panel according to another embodiment of the invention. FIG. 3B is a schematic top view of a touch display panel according to another embodiment of the invention. FIG. 3C is a schematic top view of a touch display panel according to another embodiment of the invention. FIG. 3D is a schematic top view of a touch display panel according to another embodiment of the invention. FIG. 3E is a schematic top view of a touch display panel according to another embodiment of the invention. FIG. 3F is a schematic top view of a touch display panel according to another embodiment of the invention. 4 is a schematic top view of a touch display panel according to still another embodiment of the invention.

10: Touch display panel

11: Non-display area

12: Display area

12A: Short side

14: The first partition

16: Second partition

100: pixel array substrate

120: Integrated Circuit

200: touch switch

220: Touch switch group

300: Touch electrode group

310: first touch electrode group

312: First touch electrode

320: second touch electrode group

322: Second touch electrode

410: The first paragraph

420: second paragraph

430: Third paragraph

TE: touch electrode

TL1: the first touch signal line

TL2: second touch signal line

A-A’: Section line

Claims (14)

A touch display panel includes: a pixel array substrate having a display area and a non-display area; an integrated circuit is disposed in the non-display area; a plurality of touch switches are disposed in the non-display area and are located Different sides of the integrated circuit; and a plurality of touch electrode groups are disposed in the display area, each of the touch electrode groups includes a plurality of touch electrodes, and the touch electrode groups include at least one first touch electrode group corresponding to A first partition of the display area and at least one second touch electrode group correspond to a second partition of the display area, wherein the plurality of first touch electrodes in the at least one first touch electrode group are electrically connected to Corresponding to the touch switches and the integrated circuit, wherein the plurality of second touch electrodes in the second touch electrode group are respectively electrically connected to the corresponding integrated circuit. The touch display panel as described in item 1 of the patent application scope, wherein the touch switches and the integrated circuit are respectively located on opposite sides of the pixel array substrate. The touch display panel as described in item 1 of the patent application scope further includes a plurality of first touch signal lines and a plurality of second touch signal lines, each of which includes a first segment And a second segment, the first segment electrically connects the touch switch to the first touch electrode, the second segment electrically connects the first touch electrode to the integrated circuit, each of the second The touch signal line electrically connects each second touch electrode to the integrated circuit. The touch display panel as described in item 3 of the patent application range, wherein the first touch signal line further includes a third segment, and the third segment electrically connects the first segment to the first touch electrode. The touch display panel of claim 3, wherein the long axis of the first touch electrode group in the first partition is parallel to a short side of the display area, and the first touch electrode group is adjacent to For the touch switches, the long axis of the second touch electrode group in the second partition is parallel to the short side, and the second touch electrode group is adjacent to the integrated circuit. The touch display panel of claim 5 of the patent application, wherein the width of the first segment is greater than the width of the second segment, and the width of the first segment is greater than the width of the second touch signal line. The touch display panel as described in item 5 of the patent application scope, wherein the ratio of the area occupied by the first partition to the total area of the display area is 1/3 to 2/3, and the area occupied by the second partition The ratio to the total area of the display area is 1/3 to 2/3. The touch display panel according to item 3 of the patent application scope, wherein the first touch electrode groups in the first section are arranged along a long side of the display area, and the first sections in the second section The two touch electrode groups are arranged along the long side of the display area, and the opposite ends of the first partition or the opposite ends of the second partition correspond to the touch switches and the integrated circuit, respectively. The touch display panel as described in item 8 of the patent application range, wherein the widths of the first touch signal lines are greater than the widths of the second touch signal lines. The touch display panel of claim 3, wherein in the display area, the at least one first touch electrode group is plural, and the at least one second touch electrode group is plural, wherein each The long axis of the first touch electrode group in the first partition is parallel to a short side of the display area, the long axis of the second touch electrode group in each second partition is parallel to the short side, and The first touch electrode groups and the second touch electrode groups are alternately arranged along a long side of the display area. The touch display panel of claim 10, wherein the width of the first segment is greater than the width of the second segment, and the width of the first segment is greater than the width of the second touch signal line. The touch display panel of claim 3, wherein in the display area, the at least one first touch electrode group is plural, and the at least one second touch electrode group is plural, wherein each The first touch electrode groups in a first partition are arranged along a long side of the display area, and the second touch electrode groups in each second partition are along the long side of the display area Side by side, the opposite ends of each first partition or the opposite ends of each second partition correspond to the touch switches and the integrated circuit, respectively, and the first touch electrode groups and the second The touch electrode groups are staggered along a short side of the display area. The touch display panel as described in item 12 of the patent application scope, wherein the width of the first touch signal lines is greater than the width of the second touch signal lines. The touch display panel as described in item 3 of the patent application scope further includes a plurality of pixel structures respectively disposed in the display area, each of the pixel structures includes: a thin film transistor; and a pixel electrode, electrically Connected to the thin film transistor, wherein the touch electrodes are partially overlapped with the pixel electrodes of the pixel structure in a direction perpendicular to the pixel array substrate, the touch electrodes are electrically separated from each other, and the The touch electrodes are electrically connected to the first touch signal lines or the second touch signal lines, respectively.

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