TW201802645A - Touch structure and touch display panel - Google Patents

Abstract

A touch structure includes the first sensing electrodes, the second sensing electrode, the first sensing series and the second sensing series. The first sensing electrode is extended along the first direction and includes sensing segments and the first bridge lines, and the sensing segments and the first bridge lines are arranged alternately and electrically connected to each other. The second sensing electrode is disposed between any two adjoining sensing segments and extended along the second direction. The first sensing series is extended along the first direction and includes the first sensing pads and the second bridge lines, two first sensing pads disposed on two sides of the second sensing electrode are electrically connected by the second bridge line. The second sensing series is extended along the second direction and includes the second sensing pads and the third bridge lines, two second sensing pads disposed on two sides of the first sensing electrode are electrically connected by the third bridge line.

Description

Touch structure and touch display panel

The present invention relates to a touch structure and a touch display panel, and more particularly to a touch structure and a touch display panel that integrate different touch technologies.

Due to the characteristics of human-computer interaction, the touch panel has gradually replaced the keyboard and is widely used in the input interface of electronic devices. In recent years, with the development of consumer electronics products, the use of touch panels and displays to form touch display devices has increased, including mobile phones and satellite navigation. System (GPS navigator system), tablet PC (laptop PC), and laptop PC (laptop PC).

Today ’s touch technology is very diverse. Among them, capacitive touch technology has become a medium-to-high-end consumer electronics product because of its high accuracy, multi-touch, high durability, and high touch resolution. Mainstream touch technology. Capacitive touch technology is divided into mutual-capacitance touch technology and self-capacitance touch technology. Currently, most mainstream touch panels use mutual-capacitance touch technology. The advantage is that Supports multi-touch. However, the mutual-capacitive touch technology can only be sensed by the mutual-capacitive touch structure when the finger is close to the glass or touches the glass. Conversely, if the finger is far away from the glass, it cannot be effectively sensed by the mutual capacitive touch structure. On the other hand, self-capacitive touch technology has the advantages of better signal strength, longer sensing distance, and more power saving. However, the self-capacitive touch technology has a ghost point effect when detecting multi-touch.

An object of the present invention is to provide a touch structure and a touch display panel to integrate touch structures of different touch technologies.

An embodiment of the present invention provides a touch structure including a plurality of first sensing electrodes, a plurality of second sensing electrodes, a plurality of first sensing strings, and a plurality of second sensing strings. The first sensing electrodes respectively extend in a first direction. Each first sensing electrode includes a plurality of sensing sections and a plurality of first bridge lines. The first bridge lines are respectively disposed between two adjacent sensing sections. The first bridge lines and the sensing sections are alternately arranged along the first direction and are electrically connected to each other. The second sensing electrodes are respectively disposed between any two adjacent sensing sections and extend along the second direction. The first sensing electrodes and the second sensing electrodes are staggered with each other to define a plurality of regions. The first sensing strings extend along the first direction. Each first sensing string includes a plurality of first sensing pads and a plurality of second bridge lines. The second bridge lines are electrically connected to the second sensing electrodes. First sensing pads on both sides. The second sensing strings extend along the second direction. Each second sensing string includes a plurality of second sensing pads and a plurality of third bridge lines. The third bridge lines are electrically connected to the first sensing electrodes. The two second sensing pads on both sides, wherein each area has two first sensing pads opposite to each other and two second sensing pads opposite to each other.

An embodiment of the present invention provides a touch display panel including the above-mentioned touch structure, a first substrate, a second substrate, and a display medium layer. The first substrate is disposed opposite to the second substrate, the display medium layer is disposed between the first substrate and the second substrate, and the touch-control structure is disposed between the second substrate and the display medium layer.

Another embodiment of the present invention provides a touch display panel including the above-mentioned touch structure, a first substrate, a second substrate, and a display medium layer. The first substrate is disposed opposite to the second substrate, the display medium layer is disposed between the first substrate and the second substrate, and the touch structure is disposed on the second substrate, and the second substrate is disposed between the touch structure and the display medium layer between.

In order to make a person skilled in the art who is familiar with the technical field of the present invention further understand the present invention, the preferred embodiments of the present invention are enumerated below, and in conjunction with the accompanying drawings, the constitutional content of the present invention and the effects to be achieved are described in detail. .

Please refer to Figure 1 to Figure 2. FIG. 1 is a schematic diagram of a touch structure according to a first embodiment of the present invention, and FIG. 2 is a schematic cross-sectional diagram of the touch structure shown along a section line A-A 'of FIG. 1. In order to highlight the features of the touch-control structure of this embodiment, FIG. 1 only shows a partial schematic diagram of the touch-control structure of this embodiment, and the substrate of FIG. 2 is not shown. As shown in FIGS. 1 and 2, the touch structure 1A of this embodiment includes a plurality of first sensing electrodes 100, a plurality of second sensing electrodes 102, a plurality of first sensing series 104, and a plurality of Second sensing series 106. The first sensing electrodes 100 extend along the first direction D1. Each first sensing electrode 100 includes a plurality of sensing sections 108 and a plurality of first bridge lines 110. The first bridge lines 110 are respectively disposed on two adjacent sides. Between the sensing sections 108, the first bridge lines 110 and the sensing sections 108 are alternately arranged along the first direction D1 and are electrically connected to each other. In other words, the sensing sections 108 and the first bridge line 110 electrically connected to each other along the first direction D1 constitute the first sensing electrode 100. For example, each sensing section 108 is a strip electrode, and its shape may be an elongated rectangle, or it may be wavy, jagged, but not limited thereto. The width may be, for example, 5 to 100 microns, preferably 20 to 80 microns, but is not limited thereto. The second sensing electrodes 102 are respectively disposed between any two adjacent sensing sections 108 and extend along the second direction D2. The second sensing electrodes 102 are interleaved with the plurality of first bridge lines 110 but are isolated from each other. In this embodiment, the first The two sensing electrodes 102 may be continuous strip electrodes without bridge lines. The width of the second sensing electrode 102 may be, for example, 5 to 100 microns, preferably 20 to 80 microns, but is not limited thereto. The first sensing electrode 100 and the second sensing electrode 102 in this embodiment are not limited to the above configuration. In other modified embodiments, the first sensing electrode 100 may be a strip electrode extending continuously, and the second sensing electrode 102 may be formed of a sensing section and a bridge line. The plurality of first sensing electrodes 100 and the plurality of second sensing electrodes 102 respectively extend in different directions, so that a plurality of regions R can be staggered to each other. Furthermore, the first direction D1 and the second direction D2 of this embodiment are perpendicular, so the shape of the region R is rectangular, and the side length d3 of the region R may be 3 to 7 mm, preferably 4 to 6 mm, but not This is the limit. The first sensing series 104 respectively extend along the first direction D1. Each first sensing series 104 includes a plurality of first sensing pads 112 and a plurality of second bridge lines 114, and the plurality of first sensing pads 112 are respectively Pairs of two are arranged on the two sides of the second sensing electrode 102 on the first direction D1, and a plurality of second bridge lines 114 are respectively disposed between each pair of the first sensing pads 112 and are respectively connected to the plurality of second sensing pads. The measuring electrodes 102 are staggered but isolated from each other, so as to electrically connect the pairs of first sensing pads 112 on both sides of each of the second sensing electrodes 102 respectively. The second sensing series 106 respectively extend along the second direction D2. Each second sensing series 106 includes a plurality of second sensing pads 116 and a plurality of third bridge lines 118. The plurality of second sensing pads 116 respectively The two pairs are arranged on both sides of the first sensing electrode 100 in the second direction D2, and a plurality of third bridge lines 118 are respectively disposed between each pair of the second sensing pads 116 and are respectively connected to the plurality of first sensing pads 116. The test electrodes 100 are staggered but isolated from each other, and are electrically connected to a pair of second sensing pads 116 on both sides of each first sensing electrode 100. The first sensing pad 112, the second sensing pad 116, the sensing section 108, and the second sensing electrode 102 of this embodiment are separated from each other, are not electrically connected, and have a gap S therebetween. The width of the gap S may be, for example, about 1 to about 30 micrometers, preferably 5 to about 20 micrometers, but is not limited thereto. It is also worth mentioning that, in the touch structure 1A, each area R has two first sensing pads 112 and two second sensing pads 116 opposite to each other, and the touch of this embodiment The structure 1A further includes a plurality of fourth bridge lines 120 respectively disposed in two regions R between two opposite first sensing pads 112 in the first direction D1 and electrically connected to each other. The two opposite second sensing pads 116 in the direction D2 are connected to each other, for example, they can be connected to each other through a connection line of the same conductive layer as the second sensing pad 116, but not limited thereto. The plurality of fourth bridge lines 120 are respectively interlaced with the connection lines of the two opposite second sensing pads 116 but are isolated from each other.

In this embodiment, the patterns of the first and second sensing pads 112 and 116 are substantially triangular, and the longest side of the triangular patterns of each of the first sensing pads 112 is adjacent to the second sensing electrode 102. One of them is set, and the longest side in the triangular pattern of each second sensing pad 116 is set adjacent to one of the first sensing electrodes 100, so the two first sensing pads in each region R 112 and the two second sensing pads 116 may be combined into a quadrangular (eg, diamond, rectangular, etc.) pattern. The areas of the two opposing first sensing pads 112 in each region R of this embodiment are substantially the same, and the areas of the two opposing second sensing pads 116 are substantially the same, but not limited thereto. In addition, the areas of the first sensing pad 112 and the second sensing pad 116 may be substantially the same, but not limited thereto. On the other hand, the two opposing first sensing pads 112 in each region R are arranged symmetrically in a mirror image at the center point of each region R, and the two opposing second sensing pads 116 in each region R are each region The center points of R are arranged symmetrically in a mirror image. In addition, the second sensing pads 116 located on both sides of each first sensing electrode 100 are symmetrically arranged with each first sensing electrode 100 as a center of symmetry, and the second sensing pads 116 located on both sides of each second sensing electrode 102 A sensing pad 112 is mirror-symmetrically arranged with each second sensing electrode 102 as a center of symmetry. It is worth mentioning that the first bridge line 110 in this embodiment is disposed at the intersection of the first sensing electrode 100 and the second sensing electrode 102 and is located at the junction of four adjacent first sensing pads 112. And the junction of four adjacent second sensing pads 116.

In this embodiment, the sensing section 108, the second sensing electrode 102, the first sensing pad 112 and the second sensing pad 116 are the first patterned conductive layer 122, and the first bridge line 110 and the second The bridge lines 114, the third bridge lines 118, and the fourth bridge lines 120 are the same as the second patterned conductive layer 124. As shown in FIG. 2, the touch structure 1A of this embodiment may be disposed on the substrate 126, and the touch structure 1A may further include a patterned insulating layer 128, wherein the first patterned conductive layer 122 is disposed on the substrate 126. And the second patterned conductive layer 124, and the patterned insulating layer 128 is disposed between the first patterned conductive layer 122 and the second patterned conductive layer 124, but not limited thereto. In other variant embodiments, the patterned insulating layer 128 may also be a full-surface insulating layer and have a plurality of contact holes, so that part of the first patterned conductive layer 122 may be conductively contacted with part of the second patterned conductive layer 122. Layer 124 is connected. With the configuration design of the touch structure 1A of this embodiment, the first sensing electrode 100, the second sensing electrode 102, the first sensing series 104, and the second sensing series 106 are separated from each other, and are not electrically connected, so The first sensing electrode 100, the second sensing electrode 102, the first sensing series 104 and the second sensing series 106 can respectively transmit or receive signals without being affected by each other. In addition, as shown in FIG. 2, the second bridge line 114 only needs to cross one second sensing electrode 102 and two gaps S to connect the first sensing pad 112, which can effectively shorten the length of the bridge line, thereby reducing the The impact of quality. Similarly, the first bridge line 110, the third bridge line 118, and the fourth bridge line 120 can all achieve the same effect as the second bridge line 114. The lengths of the first bridge line 110, the second bridge line 114, the third bridge line 118, and the fourth bridge line 120 in this embodiment are less than about 200 microns, and preferably less than about 100 microns, but not limited thereto. In addition, the touch structure 1A is only composed of the first patterned conductive layer 122, the second patterned conductive layer 124, and the patterned insulating layer 128, so the process steps can be reduced, and the required cost can be reduced.

In this embodiment, the substrate 126 may include a transparent substrate such as a glass substrate or a plastic substrate, but is not limited thereto. The first patterned conductive layer 122 and the second patterned conductive layer 124 may include a patterned transparent conductive layer, and materials thereof may include, for example, indium tin oxide (ITO), indium zinc oxide (IZO), Other transparent conductive materials with high light transmission and good conductivity or the aforementioned materials are stacked. In addition, the second patterned conductive layer 124 may also include an opaque patterned conductive layer, and a material thereof may include a metal or an alloy. Alternatively, the second patterned conductive layer 124 may include an opaque patterned conductive layer and a transparent patterned conductive layer stacked on each other. The patterned insulating layer 128 may include an organic insulating layer such as an acrylic material or an inorganic insulating layer such as silicon oxide, silicon nitride, silicon oxynitride, or a stack of the foregoing materials, but is not limited thereto.

Please refer to Figures 3 to 5. FIG. 3 shows a schematic diagram of the mutual-capacitive touch architecture of the touch structure of FIG. 1, FIG. 4 shows a schematic diagram of the self-capacitive touch architecture of the touch structure of FIG. 1, and FIG. 5 A flowchart of steps in a method for driving a touch structure according to the first embodiment of the present invention is shown. Figures 3 and 4 are derived from the structure of Figure 1. As shown in FIG. 3, the first sensing electrode 100 and the second sensing electrode 102 in this embodiment can be used to implement mutual-capacitive touch sensing. The first sensing electrode 100 is used as a driving line, for example, and the second sensing electrode 102 is used as a sensing line. The first sensing electrode 100 is sequentially driven, and the second sensing electrode 102 sequentially outputs corresponding signals. The position of the touch is known by detecting the change amount of the capacitor, but it is not limited to this. In other variations, the second sensing electrode 102 can also be used as a driving line, and the first sensing electrode 100 can be used as a sensing line. As shown in FIG. 4, the first sensing series 104 and the second sensing series 106 in this embodiment can be used to implement self-capacitive touch sensing. The first sensing pad 112 and the second sensing pad 116 both serve as a driving electrode and a sensing electrode. The first sensing series 104 and the second sensing series 106 can sense the amount of change in capacitance in different directions. Learn where it touched. In this embodiment, the area of the first sensing series 104 and the second sensing series 106 occupies the first sensing series 104, the second sensing series 106, the first sensing electrodes 100 and the second The ratio of the area sum of the sensing electrodes 102 is 50% or more, but it is not limited thereto. As shown in FIG. 5, the driving method of the touch structure 1A of this embodiment includes the following steps:

Step S10: providing a touch structure;

Step S12: providing a first signal to the touch structure for a self-capacitive sensing;

Step S14: Provide a second signal to the touch structure for a mutual capacitance sensing.

It is worth mentioning that there is no restriction on the sequence between steps S12 and S14, and steps S12 and S14 can be performed simultaneously or separately, without being limited thereto. In detail, step S10 may be, for example, providing the touch structure 1A of this embodiment, but is not limited thereto. Step S12 includes providing a first signal to each of the first sensing series 104 and each of the second sensing series 106. On the other hand, each of the first sensing series 104 and each of the second sensing series 106 outputs a first sensing signal. Since the first sensing series 104 extends in the first direction D1 and the second sensing series 106 extends in the second direction D2 in this embodiment, from the first sensing series 104 and the second sensing series The first sensing signal output from the column 106 can know the capacitance changes in the first direction D1 and the second direction D2 to further determine the touched position. In addition, step S14 includes providing a second signal to each of the first sensing electrodes 100. On the other hand, each second sensing electrode 102 outputs a second sensing signal. In other words, the first sensing electrode 100 is used as a driving line, and the second sensing electrode 102 is used as a sensing line. The first sensing electrode 100 is driven sequentially, and the second sensing electrode 102 performs overall sensing or sequential sensing to output a corresponding signal, and then can detect the amount of touch by detecting the change in capacitance. position. Since the first sensing electrode 100, the second sensing electrode 102, the first sensing series 104, and the second sensing series 106 of this embodiment are separated from each other, the touch structure 1A can perform self-capacitive sensing at the same time. And mutual capacitance sensing, but not limited to this. In addition, the signal strength obtained by self-capacitive sensing is better and the sensing distance is longer. Therefore, when the object is slightly far away from the touch structure 1A and the first sensing electrode 100 and the second sensing electrode 102 cannot effectively perform mutual capacitance sensing, the first sensing series 104 and the second sensing can be used. The measurement series 106 is compensated by self-capacitive touch sensing. Therefore, the touch structure 1A of this embodiment can use two different touch technologies to cooperate with each other to effectively detect the touch position of an object at a short distance or a slightly longer distance.

The touch structure of the present invention is not limited to the above embodiments. The following will sequentially introduce the touch structure and touch display panel of other preferred embodiments of the present invention. In order to facilitate the comparison of the differences between the embodiments and simplify the description, the same symbols are used in the following embodiments The same components are mainly described for the differences between the embodiments, and the repeated parts are not described again.

Please refer to FIG. 6, which is a schematic cross-sectional view of a touch structure according to a first variation of the first embodiment of the present invention. As shown in FIG. 6, this modified embodiment is different from the first embodiment in that the second patterned conductive layer 124 is disposed between the first patterned conductive layer 122 and the substrate 126, and the patterned insulating layer 128 Still disposed between the first patterned conductive layer 122 and the second patterned conductive layer 124. The remaining features of this modified embodiment are the same as those of the first embodiment, and are not repeated here. In addition, the features of this modified embodiment can also be applied to the following embodiments.

Please refer to FIG. 7, which illustrates a schematic diagram of a touch structure of a second variation of the first embodiment of the present invention. In order to highlight the features of the touch structure 1B of this modified embodiment, FIG. 7 is a schematic diagram showing only one of the regions R. This modified embodiment is different from the first embodiment in that the fourth bridge line 120 is respectively disposed between two opposite second sensing pads 116 in the second direction D2 in each region R and is electrically connected to each other. In addition, the two first sensing pads 112 opposite to each other in the first direction D1 in each region R are directly connected to each other through a connection line of the same conductive layer as the first sensing pad 112, for example. The remaining features of this modified embodiment are the same as those of the first embodiment, and are not repeated here. In addition, the features of this modified embodiment can also be applied to the remaining embodiments.

Please refer to Figure 8 to Figure 10. FIG. 8 illustrates a schematic diagram of a touch structure of a second embodiment of the present invention, FIG. 9 illustrates a schematic diagram of a mutual-capacitive touch architecture of the touch structure of FIG. 8, and FIG. 10 illustrates FIG. 8 is a schematic diagram of a self-capacitive touch architecture of a touch structure. As shown in FIG. 8, this embodiment is different from the first embodiment in that any two adjacent sensing sections 108 in each region R in the touch structure 2 are adjacent to the second sensing electrode 102 therebetween. The intersection locations include the first branch electrode 100B and the second branch electrode 102B, respectively. The first branch electrode 100B and the second branch electrode 102B extend in directions different from the first direction D1 and the second direction D2, respectively. For example, the sensing section 108 and the second sensing electrode 102 are respectively provided with a first branch electrode 100B and a second branch electrode 102B at four corners of the region R. In other words, there may be, for example, four first branch electrodes 100B and four second branch electrodes 102B in one region R, and the first branch electrode 100B and the second branch electrode 102B may be, for example, along a diagonal line parallel to the region R Direction, but not limited to this. It is worth mentioning that the first branch electrodes 100B are separated from each other, the second branch electrodes 102B are separated from each other, and the first branch electrodes 100B and the second branch electrodes 102B are separated from each other and are not electrically connected. Furthermore, the length d1 of the first branch electrode 100B and the length d2 of the second branch electrode 102B in this embodiment are greater than or equal to 25% of the side length d3 of the region R and less than 70% of the side length d3 of the region R. Any two phases The end of the adjacent first branch electrode 100B is aligned with the end of the second branch electrode 102B. Specifically, there is a symmetry axis between any two adjacent first branch electrodes 100B and the second branch electrode 102B. In one direction, the end of the first branch electrode 100B may be aligned with the end of the second branch electrode 102B, but is not limited thereto. In other variations, the ends of any two adjacent first branch electrodes 100B and the ends of the second branch electrode 102B may not be aligned. On the other hand, Fig. 9 and Fig. 10 are obtained by disassembling the structure in Fig. 8. As shown in FIG. 9 and FIG. 10, the first sensing electrode 100 and the second sensing electrode 102 in this embodiment can be used to implement mutual capacitance touch sensing, and the first sensing series 104 and the second sensing The measurement series 106 can be used to implement self-capacitive touch sensing. Since the first branch electrode 100B and the second branch electrode 102B are respectively provided on the first sensing electrode 100 and the second sensing electrode 102, mutual capacitive touch sensing is performed on the first sensing electrode 100 and the second sensing electrode 102. During the measurement, the capacitance sensing amount between the electrodes can be increased, thereby improving the sensing capability. In addition, the remaining features of this embodiment are the same as those of the first embodiment, and are not repeated here.

Please refer to Figure 11 to Figure 13. FIG. 11 shows a schematic diagram of a touch structure of a third embodiment of the present invention, FIG. 12 shows a schematic diagram of a mutual-capacitive touch architecture of the touch structure of FIG. 11, and FIG. 13 shows FIG. 11 is a schematic diagram of a self-capacitive touch architecture of a touch structure. As shown in FIG. 11, this embodiment is different from the first embodiment in that each sensing section 108 in the touch structure 3 further has two first portions 130 and one second portion 132, where the first portion 130 is disposed At both ends of each sensing section 108, the second portion 132 is disposed between the first portions 130 and is staggered corresponding to the third bridge line 118, and the width of the first portion 130 is greater than the width of the second portion 132. Each second sensing electrode 102 further has a plurality of third portions 134 and a plurality of fourth portions 136, wherein each fourth portion 136 is disposed between two adjacent third portions 134, and each fourth portion 136 is connected with The first bridge lines 110 or the second bridge lines 114 are arranged alternately, and the width of each third portion 134 is greater than the width of each fourth portion 136. Figures 12 and 13 are derived from the structure of Figure 11. As shown in FIG. 12 and FIG. 13, another difference between this embodiment and the first embodiment is that the first sensing electrode 100 and the second sensing electrode 102 can be used to implement self-capacitive touch sensing. A sensing series 104 and a second sensing series 106 can be used to implement mutual-capacitive touch sensing. The area of the first sensing electrode 100 and the second sensing electrode 102 and the area of the first sensing series 104, the second sensing series 106, the first sensing electrode 100 and the second sensing electrode 102 The proportion is 50% or more. When the first sensing electrode 100 and the second sensing electrode 102 of this embodiment are used to implement self-capacitive touch sensing, the first portion 130 and the second sensing electrode of the first sensing electrode 100 are used. The width of the third portion 134 of 102 is increased to increase the area of the first sensing electrode 100 and the second sensing electrode 102, thereby improving the signal to noise ratio (SNR) of the touch sensing. On the other hand, since the bridge line (such as the first bridge line 110, the second bridge line 114, or the third bridge line 118) is across the second portion 132 of the first sensing electrode 100 and the fourth portion of the second sensing electrode 102 The portion 136 is provided, and the widths of the second portion 132 of the first sensing electrode 100 and the fourth portion 136 of the second sensing electrode 102 remain small, so that the effect of effectively shortening the length of the bridge line can still be achieved, thereby reducing Impact on viewing quality. In addition, the remaining features of this embodiment are the same as those of the first embodiment, and are not repeated here.

Please refer to FIG. 14, which illustrates a touch display panel according to an embodiment of the present invention. As shown in FIG. 14, the touch display panel 10 of this embodiment includes a first substrate 138, a display medium layer 140, a second substrate 142, and a touch structure 4. The first substrate 138 is opposite to the second substrate 142, and the display medium layer 140 is disposed between the first substrate 138 and the second substrate 142. The touch structure 4 in this embodiment may be the touch structure disclosed in any of the foregoing embodiments, and the touch display panel 10 may be, for example, an in-cell touch display panel, that is, the touch structure 4 It is disposed between the first substrate 138 and the second substrate 142, but is not limited thereto. For example, the touch structure 4 in this embodiment may be disposed between the display medium layer 140 and the second substrate 142. The first substrate 138 and the second substrate 142 may include a glass substrate, a plastic substrate, or other suitable hard or flexible base plates. The first substrate 138 may include an active element, a passive element (such as a capacitor, a resistor, etc.), and a scan line. The data line, the alignment layer, or the drive control circuit is disposed between the first substrate 138 and the display medium layer 140. The second substrate 142 may include a color filter or a black matrix disposed between the second substrate 142 and the display medium layer 140. , But not limited to this. In addition, the touch display panel 10 in this embodiment is a liquid crystal display panel as an example. Therefore, the display medium layer 140 may be, for example, a liquid crystal layer, but is not limited thereto. In other variant embodiments, the display medium layer 140 may be, for example, an electrophoresis layer, an inorganic light emitting diode (LED) element, or an organic light emitting diode (OLED) element. In this embodiment, the liquid crystal display panel may be, for example, a Fringe Field Switching liquid crystal display panel, an In-Plane Switching liquid crystal display panel, or a Twisted Nematic liquid crystal display panel. 5. Vertical Alignment liquid crystal display panel or electrical optical compensation liquid crystal display panel.

Please refer to FIG. 15, which illustrates a touch display panel according to another embodiment of the present invention. As shown in FIG. 15, the touch display panel 20 of this embodiment may be an on-cell touch display panel, wherein the touch structure 4 may be disposed on the second substrate 142, but this is not the case. limit. In addition, the touch display panel 20 may further include a cover (not shown) disposed on the touch structure 4 to protect the touch structure 4. The application of the touch structure of the present invention is not limited to the in-cell touch display panel and the in-cell touch display panel, but can also be applied to an in-cell touch display panel or other suitable types of touch display panels.

To sum up, the touch structure of the present invention integrates self-capacitive and mutual-capacitive touch technologies, and can use two different touch technologies to cooperate with each other to effectively detect objects at near or slightly distant distances. Touch the position. In addition, the touch structure of the present invention can effectively shorten the length of the bridge line, thereby reducing the impact on the viewing quality. Furthermore, the touch structure is only composed of the first patterned conductive layer, the second patterned conductive layer, and the patterned insulating layer, so the steps of the manufacturing process can be reduced, thereby reducing the required cost. The above description is only a preferred embodiment of the present invention, and all equivalent changes and modifications made in accordance with the scope of patent application of the present invention shall fall within the scope of the present invention.

1A, 1B, 2, 3, 4‧‧‧ touch structure
10, 20‧‧‧ touch display panel
100‧‧‧first sensing electrode
100B‧‧‧First branch electrode
102‧‧‧Second sensing electrode
102B‧‧‧Second branch electrode
104‧‧‧First sensing series
106‧‧‧Second sensing series
108‧‧‧ Sensing Section
110‧‧‧The first bridge line
112‧‧‧First sensing pad
114‧‧‧Second bridge line
116‧‧‧Second sensing pad
118‧‧‧Third Bridge
120‧‧‧ Fourth bridge line
122‧‧‧The first patterned conductive layer
124‧‧‧ the second patterned conductive layer
126‧‧‧ substrate
128‧‧‧ patterned insulation layer
130‧‧‧ Part I
132‧‧‧ Part Two
134‧‧‧Part III
136‧‧‧Part Four
138‧‧‧first substrate
140‧‧‧Display media layer
142‧‧‧second substrate
d1, d2‧‧‧length
d3‧‧‧side length
D1‧‧‧ first direction
D2‧‧‧ Second direction
R‧‧‧ area
S‧‧‧ Clearance

FIG. 1 is a schematic diagram illustrating a touch structure of a first embodiment of the present invention. FIG. 2 is a schematic cross-sectional view of the touch structure shown along the section line A-A 'of FIG. 1. FIG. FIG. 3 is a schematic diagram of the mutual-capacitive touch architecture of the touch structure of FIG. 1. FIG. 4 is a schematic diagram of the self-capacitive touch architecture of the touch structure of FIG. 1. FIG. 5 is a flowchart illustrating a method for driving a touch structure according to a first embodiment of the present invention. FIG. 6 is a schematic cross-sectional view of a touch structure according to a first variation of the first embodiment of the present invention. FIG. 7 is a schematic diagram illustrating a touch structure of a second variation of the first embodiment of the present invention. FIG. 8 is a schematic diagram illustrating a touch structure according to a second embodiment of the present invention. FIG. 9 is a schematic diagram of the mutual-capacitive touch architecture of the touch structure of FIG. 8. FIG. 10 is a schematic diagram of a self-capacitive touch architecture of the touch structure of FIG. 8. FIG. 11 is a schematic diagram illustrating a touch structure according to a third embodiment of the present invention. FIG. 12 is a schematic diagram of the mutual-capacitive touch architecture of the touch structure of FIG. 11. FIG. 13 is a schematic diagram of a self-capacitive touch architecture of the touch structure of FIG. 11. FIG. 14 illustrates a touch display panel according to an embodiment of the present invention. FIG. 15 illustrates a touch display panel according to another embodiment of the present invention.

1A‧‧‧touch structure

100‧‧‧first sensing electrode

102‧‧‧Second sensing electrode

104‧‧‧First sensing series

106‧‧‧Second sensing series

108‧‧‧ Sensing Section

110‧‧‧The first bridge line

112‧‧‧First sensing pad

114‧‧‧Second bridge line

116‧‧‧Second sensing pad

118‧‧‧Third Bridge

120‧‧‧ Fourth bridge line

d3‧‧‧ side length

D1‧‧‧ first direction

D2‧‧‧ Second direction

R‧‧‧ area

S‧‧‧ Clearance

Claims (17)

A touch structure includes: a plurality of first sensing electrodes each extending in a first direction, each of the first sensing electrodes including a plurality of sensing sections and a plurality of first bridge lines, and the first bridges The wirings are respectively arranged between two adjacent sensing sections, and the first bridge lines and the sensing sections are alternately arranged along the first direction and are electrically connected to each other; a plurality of second sensing sections The electrodes are respectively disposed between any two adjacent sensing sections and extend along a second direction; the first sensing electrodes and the second sensing electrodes are staggered with each other to define a plurality of areas; A plurality of first sensing strings extend along the first direction, and each of the first sensing strings includes a plurality of first sensing pads and a plurality of second bridge lines, and the second bridge lines are electrically The first sensing pads connected to both sides of each of the second sensing electrodes; and a plurality of second sensing strings extending along the second direction, each of the second sensing strings including a plurality of second The sensing pad and a plurality of third bridge lines are electrically connected to the third bridge lines respectively. The second sensing pads on both sides of the first sensing electrode; wherein each of the areas has two first sensing pads disposed opposite to each other and two second sensing pads disposed opposite to each other. The touch-control structure according to claim 1, wherein the touch-control structure further comprises a plurality of fourth bridge lines respectively disposed between the two opposite first sensing pads in the area and electrically connected to each other, The two opposite second sensing pads in each area are connected to each other. The touch-control structure according to claim 1, wherein the touch-control structure further comprises a plurality of fourth bridge lines respectively disposed between the two opposite second sensing pads in the area and electrically connected to each other, And the two opposite first sensing pads in each area are connected to each other. The touch control structure according to claim 1, wherein the two opposite first sensing pads in each area are arranged in a mirror-symmetrical manner at a center point of each area, and the two opposite ones in each area The second sensing pads are mirror-symmetrically arranged at the center point of each area. The touch control structure according to claim 1, wherein the second sensing pads located on both sides of each of the first sensing electrodes are symmetrically arranged in mirror images of the first sensing electrodes, and are located on each of the second sensing electrodes. The first sensing pads on both sides of the measuring electrode are symmetrically arranged in mirror images of the second sensing electrodes. According to the touch structure described in claim 1, the first bridge lines are arranged at the junctions of four adjacent first sensing pads and the junctions of four adjacent second sensing pads. Office. The touch control structure according to claim 1, wherein each of the sensing sections has two first sections and a second section, wherein the first sections are disposed at two ends of each of the sensing sections, and the second section A portion is disposed between the first portions and corresponding to the third bridge line, and the width of the first portion is greater than the width of the second portion, and each of the second sensing electrodes has a plurality of third portions and a plurality of A fourth part, wherein each fourth part is disposed between two adjacent third parts, each fourth part is corresponding to the first bridge line or the second bridge line, and The width of each of the third portions is greater than the width of each of the fourth portions. The touch-control structure according to claim 1, wherein the patterns of the first sensing pads and the second sensing pads are substantially triangular. The touch control structure according to claim 8, wherein the longest side of the triangular pattern of each of the first sensing pads is disposed adjacent to one of the second sensing electrodes, and each of the second sensing pads The longest side of the triangular pattern of the pad is disposed adjacent to one of the first sensing electrodes. The touch control structure according to claim 1, wherein any two adjacent sensing sections and the second sensing electrode therebetween include a first branch electrode and a second branch electrode, respectively. The first branch electrode and the second branch electrode extend in a direction different from the first direction and the second direction. The touch-control structure according to claim 10, wherein the ends of any two adjacent first branch electrodes are aligned with the ends of the second branch electrode. The touch structure according to claim 10, wherein a length of the first branch electrode and the second branch electrode is greater than or equal to 25% of a side length of the region and less than 70% of a side length of the region. The touch structure according to claim 1, wherein the sensing sections, the second sensing electrodes, the first sensing pads and the second sensing pads are a first patterned conductive layer Layer, the first bridge lines, the second bridge lines and the third bridge line are both a second patterned conductive layer. The touch control structure according to claim 1, wherein the area of the first sensing series and the second sensing series and the area occupied by the first sensing series and the second sensing series The ratio of the area sum of the first sensing electrodes and the second sensing electrodes is greater than or equal to 50%. Each of the first sensing series and each of the second sensing series is used for self-capacitive sensing The first sensing electrodes and the second sensing electrodes are used for mutual capacitance sensing. The touch control structure according to claim 1, wherein the area of the first sensing electrodes and the second sensing electrodes and the area of the first sensing series, the second sensing series, the When the ratio of the area sum of the first sensing electrodes and the second sensing electrodes is greater than or equal to 50%, each of the first sensing series and each of the second sensing series is used for mutual capacitance sensing, Each of the first sensing electrodes and each of the second sensing electrodes are used for self-capacitive sensing. A touch display panel includes: a first substrate; a second substrate disposed opposite to the first substrate; a display medium layer disposed between the first substrate and the second substrate; and as claimed in item 1 The touch structure according to any one of 15 to 15, is disposed between the second substrate and the display medium layer. A touch display panel includes: a first substrate; a second substrate disposed opposite to the first substrate; a display medium layer disposed between the first substrate and the second substrate; and as claimed in item 1 The touch structure according to any one of 15 to 15, is disposed on the second substrate, and the second substrate is disposed between the touch structure and the display medium layer.