TWI588712B - Touch-sensing display panel - Google Patents

Description

Touch display panel

The present invention relates to a display panel, and more particularly to a touch display panel.

The touch display panel includes a display panel and a touch panel, wherein the touch panel can be built in the display panel or externally attached to the display panel. At present, the touch panel is roughly classified into a resistive touch panel, a capacitive touch panel, an optical touch panel, an acoustic wave touch panel, and an electromagnetic touch panel according to different sensing methods. Capacitive touch panels have the characteristics of fast response time, high reliability and high durability. Capacitive touch panels can be widely used in electronic products.

In general, the layout of the peripheral lines of the touch panel and the peripheral lines of the display panel requires consideration of the position of the circuit board and the positional relationship of the components of the upper and lower substrates. The overall circuit layout of the touch display panel may waste a lot of panel space, and the design of the touch panel is subject to many restrictions.

An embodiment of the present invention provides a touch display panel that can effectively integrate a line layout of a touch element layer and a display element in a peripheral area of the touch display panel.

A touch display panel according to an embodiment of the invention includes a substrate, a plurality of connection electrodes, a touch element layer, a buffer layer, a display element, and a plurality of conductive vias. The substrate has a display area and a non-display area connected to the display area. A plurality of connection electrodes are located on the non-display area of the substrate. The touch element layer is located on the display area of the substrate. The buffer layer covers the touch element layer. The display element is disposed on the buffer layer and corresponds to the display area distribution, and the display element comprises a first electrode layer, a second electrode layer and a display medium layer between the first electrode layer and the second electrode layer, wherein the first The electrode layer and the second electrode layer extend from the display area to the non-display area. The plurality of conductive vias extend through the buffer layer and are distributed corresponding to the non-display area, wherein the first electrode layer and the second electrode layer are electrically connected to the plurality of connection electrodes through the plurality of conductive vias.

In order to make the invention more apparent, the following detailed description of the embodiments and the accompanying drawings are set forth below.

FIG. 1A is a top view of a touch display panel according to a first embodiment of the present invention, wherein FIG. 1A omits a partial film layer. Fig. 1B and Fig. 1C are schematic cross-sectional views taken along line A-A' and B-B' in Fig. 1A. Referring to FIG. 1A , FIG. 1B and FIG. 1C , the touch display panel 100 of the present embodiment includes a substrate 110 , a plurality of connection electrodes 120 , a touch element layer 130 , a buffer layer 140 , a display element 150 , and a plurality of Conductive vias 160. The substrate 110 has a display area 110a and a non-display area 110b, and the non-display area 110b is connected to the display area 110a. The connection electrode 120 is located on the non-display area 110b of the substrate 110. The touch element layer 130 is located on the display area 110a of the substrate 110 and extends to the non-display area 110b. The buffer layer 140 covers the touch element layer 130. The display element 150 is disposed on the buffer layer 140 and is distributed corresponding to the display area 110a. The display element 150 includes a first electrode layer 152, a second electrode layer 154, and a first electrode layer 152 and a second electrode layer 154. A display dielectric layer 156, wherein the first electrode layer 152 and the second electrode layer 154 extend from the display region 110a to the non-display region 110b. The plurality of conductive vias 160 are disposed through the buffer layer 140 and are corresponding to the non-display regions 110b. The first electrode layer 152 and the second electrode layer 154 are electrically connected to the corresponding connection electrodes 120 through the plurality of conductive vias 160.

In the embodiment, the substrate 110 may be a hard substrate or a flexible substrate having visible light transmittance to penetrate the light emitted by the display element 150. For example, the material of the aforementioned rigid substrate is, for example, glass or other hard material, and the aforementioned flexible substrate material is, for example, polyimide (PI), polycarbonate (PC), polyamine. (polyamide, PA), polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polyethylenimine (PEI), polyurethane (polyurethane, PU), polydimethylsiloxane (PDMS), acrylate, for example, polymethylmethacrylate (PMMA), etc., ether polymer such as polyether oxime (polyethersulfone, PES) or polyetheretherketone (PEEK), etc., polyolefin or other flexible material, but the invention is not limited thereto. The material of the connection electrode 120 may be a metal, an alloy or other conductive material, and one end of the connection electrode 120 overlaps the display element 150. In one embodiment, the connection electrode 120 may have a larger width at one end overlapping the display element 150 to form a landing pad for the conductive via. 160 contacts and electrical connections. The shape of the aforementioned connection pad is, for example, a circle, an ellipse or a polygon, but the invention is not limited thereto.

The touch component layer 130 is configured to detect a signal generated by the user when the touch display panel 100 is touched. The signal type may be, for example, a change in capacitance, a change in resistance, or the like. Taking the capacitive touch element layer 130 as an example, when the user touches the touch display panel 100, the touch element layer 130 can change the capacitance in the touched area thereof, and the aforementioned capacitance change can be The controller connected to the touch component layer 130 detects and recognizes.

In this embodiment, the buffer layer 140 can be a dielectric layer. For example, the buffer layer 140 may be composed of an inorganic material including: yttrium oxide (SiO _x ), tantalum nitride (SiN _x ), cerium oxynitride (SiON), aluminum oxide (AlO _x ), oxynitride. Aluminum (AlON) or other similar. In other embodiments, the buffer layer 140 may be composed of an organic material, which comprises: polyimide (PI), polycarbonate (PC), polyamide (PA), poly Polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polyethylenimine (PEI), polyurethane (PU), polydimethyl Polydimethylsiloxane (PDMS), acrylate is, for example, polymethylmethacrylate (PMMA), etc., ether polymer such as polyethersulfone (PES) or poly Polyetheretherketone (PEEK) or the like, a polyolefin or the like or a combination thereof. In other possible embodiments, the organic material and the inorganic material may be alternately stacked to form the buffer layer 140. The buffer layer 140 is formed between the touch element layer 130 and the display element 150. The buffer layer 140 can be used to separate the touch element layer 130 and the display element 150.

For example, the buffer layer 140 has, for example, a flat upper surface such that the subsequently formed display element 150 can be fabricated on the aforementioned flat upper surface. In addition, the buffer layer 140 can block the penetration of oxygen and/or moisture. In detail, when the touch display panel 100 is a flexible touch display panel, in addition to overcoming the manufacturing process of the touch display panel with the flexible substrate, the flexible touch display panel is manufactured. The packaging process of the display element 150 is also difficult due to the flexible substrate. For example, the hard touch display panel can block the penetration of air by the aforementioned hard substrate to prevent moisture and oxygen in the air from damaging the display element 150. The flexible substrate made of the aforementioned flexible material may have a barrier capability that does not meet the gas barrier requirements of the display element 150 during the packaging process. At this time, the display element 150 can be affected by the air penetrating the flexible substrate by the buffer layer 140 having the barrier function. Further, the formation of the buffer layer 140 between the touch device layer 130 and the display device 150 can reduce the crosstalk of the display signal and the sensing signals, thereby improving the display and touch of the touch display panel 100 of the embodiment of the present invention. Control quality.

The first electrode layer 152 of the display element 150 includes a plurality of first display electrodes 152a, and the second electrode layer 154 includes a plurality of second display electrodes 154a. Further, the first display electrode 152a, the display medium layer 156 and the second display electrode 154a are stacked on the buffer layer 140, and the first display electrode 152a and the second display electrode 154a extend from the display area 110a to the non-display area 110b. The adjacent first display electrodes 152a may have a filling region 158 therebetween, which may be formed of an insulating material to electrically insulate between adjacent first display electrodes 152a. The adjacent second display electrodes 154a may have a filling region 158 therebetween, which may be formed of an insulating material to electrically insulate between adjacent second display electrodes 154a. The material of the first display electrode 152a and the second display electrode 154a may be a transparent conductive material or an opaque conductive material. The transparent conductive material is, for example, indium tin oxide (ITO), indium zinc oxide (IZO), or the like, and the aforementioned opaque conductive material is, for example, a metal. Further, the material of the display medium layer 156 is, for example, an organic electroluminescent material.

The conductive via 160 includes a plurality of first conductive vias 162 and a plurality of second conductive vias 164. The first conductive via 162 is connected between the first display electrode 152 a and the partial connection electrode 120 , and the first conductive via 162 extends through the buffer layer 140 and the touch device layer 130 . The second conductive via 164 is connected between the second display electrode 154 a and the remaining connection electrode 120 , and the second conductive via 164 extends through the buffer layer 140 , the touch device layer 130 , and the display dielectric layer 156 . In this embodiment, a through hole may be formed in the buffer layer 140, the touch element layer 130, and the display medium layer 156 by etching, grinding drilling, laser drilling or other processes, and then, in the foregoing The through holes are filled with a conductive material to form conductive vias 160 in the buffer layer 140, the touch device layer 130, and the display dielectric layer 156. Each of the first display electrodes 152a is electrically connected to one of the connection electrodes 120 on the non-display area 110b through the corresponding first conductive via 162, and each of the second display electrodes 154a is respectively transmitted through the corresponding second conductive via 164. The other of the connection electrodes 120 on the non-display area 110b is electrically connected.

In one embodiment, the touch display panel 100 further includes a substrate protection structure 112 disposed on the substrate 110 and opposite to one side of the touch element layer 130. In other words, the substrate protection structure 112 and the touch element layer 130 are respectively located on opposite sides of the substrate 110. In an embodiment, the material of the substrate protection structure 112 is, for example, tempered glass or quartz glass, and the hardness of the substrate protection structure 112 is, for example, higher than 1H to avoid abrasion or impact of the substrate 110. In one embodiment, the touch display panel 100 further includes a barrier layer 170, wherein the barrier layer 170 can be disposed between the second electrode layer 154 and the substrate 110, on an outer surface of the substrate 110, or on the second electrode. On the layer 154, the water vapor transmission rate of the barrier layer 170 is, for example, less than or equal to 0.1 g/m ² /day. Preferably, the barrier layer 170 has a water vapor transmission rate of less than 0.01 g/m ² /day. In addition, the material of the barrier layer 170 may include an inorganic material such as cerium oxide, cerium nitride, cerium oxynitride, aluminum oxide, or the like. In addition, the material of the barrier layer 170 may also include a metal material such as molybdenum, titanium, aluminum, chromium, molybdenum/aluminum/molybdenum or titanium/aluminum/titanium. In this embodiment, the material selection of the barrier layer 170 is related to the position of the barrier layer 170. In the prior art, the material of the barrier layer 170 can be selected according to the position of the barrier layer 170 to prevent the material. The connection electrode 120, the touch element layer 130, the display element 150, and/or the conductive via 160 are abnormally short-circuited. It is worth mentioning that the present invention does not limit the position, number and shape of the barrier layer 170. In this embodiment, the barrier layer 170 is disposed between the substrate 110 and the touch device layer 130, but the barrier layer 170 may be disposed between the touch device layer 130 and the buffer layer 140, and the buffer layer 140 and Between the first electrode layers 152, between the first electrode layer 152 and the display medium layer 156, and/or between the display dielectric layer 156 and the second electrode layer.

The touch display panel will be described below in different embodiments. It is to be noted that the following embodiments may be used to exemplify the same or similar elements, and the description of the same technical content is omitted. For the description of the omitted portions, reference may be made to the foregoing embodiments, and the following embodiments are not repeated.

2A and 2B are schematic cross-sectional views of a touch display panel according to a second embodiment of the present invention. The touch display panel 200 of the second embodiment is similar to the touch display panel 100 of FIG. 1A. This embodiment describes the touch display panel 200 by using FIG. 1A, FIG. 2A and FIG. It is to be noted that in FIG. 1B, FIG. 1C, FIG. 2A and FIG. 2B, the same or similar reference numerals denote the same or similar components, and the components described in FIG. 1B and FIG. 1C will not be described again. In this embodiment, the touch element layer 230 does not cover the connection electrode 220, and the buffer layer 240 is disposed on the substrate 110 to cover the touch element layer 230 and a portion of the connection electrode 220.

In the present embodiment, as shown in FIG. 2A and FIG. 2B , the conductive via 260 includes a plurality of first conductive vias 262 and a plurality of second conductive vias 264 . The first conductive via 262 is connected between the first display electrode 152 a and the partial connection electrode 220 , and the first conductive via 262 extends through the buffer layer 240 . The second conductive via 264 is connected between the second display electrode 154 a and the remaining connection electrode 220 , and the second conductive via 264 extends through the buffer layer 240 and the display dielectric layer 156 . In this embodiment, a through hole may be formed in the buffer layer 240 and the display dielectric layer 156 by etching, grinding drilling, laser drilling or other processes, and then the conductive material is filled in the through hole. A conductive via 260 is formed in the buffer layer 240 and the display dielectric layer 156. Each of the first display electrodes 152a is electrically connected to one of the connection electrodes 220 on the non-display area 110b (shown in FIG. 1A) through the corresponding first conductive vias 262, and each of the second display electrodes 154a is respectively correspondingly The second conductive via 264 is electrically connected to the other of the connection electrodes 220 on the non-display area 110b (shown in FIG. 1A).

3A and 3B are schematic cross-sectional views of a touch display panel according to a third embodiment of the present invention. The touch display panel 300 of the third embodiment is similar to the touch display panel 100 of FIG. 1A, and the touch display panel 300 is described with reference to FIGS. 1A, 3A, and 3B. It is to be noted that the same or similar reference numerals in FIG. 1B, FIG. 1C, FIG. 3A and FIG. 3B denote the same or similar members, and therefore the components described in FIG. 1B and FIG. 1C will not be described again. In the present embodiment, the second display electrode 354a of the display element 350 overlies the display medium layer 356 and a portion of the fill region 358.

In the embodiment, the conductive via 360 includes a plurality of first conductive vias 362 and a plurality of second conductive vias 364. The first conductive via 362 is connected between the first display electrode 352 a and the partial connection electrode 120 , and the first conductive via 362 extends through the buffer layer 140 and the touch device layer 130 . The second conductive via 364 is connected between the second display electrode 354a and the remaining connection electrode 120, and the second conductive via 364 extends through the buffer layer 140, the touch element layer 130 and a portion of the display element 350 (eg, in the display element) Fill area 358). In this embodiment, the through hole can be formed in the buffer layer 140, the touch device layer 130 and the partial display element 350 by etching, grinding drilling, laser drilling or other processes, and then in the through hole. A conductive material is filled in to form a conductive via 360 in the buffer layer 140, the touch device layer 130, and a portion of the display element 350. Each of the first display electrodes 352a is electrically connected to one of the connection electrodes 120 on the non-display area 110b (shown in FIG. 1A) through the corresponding first conductive via 362, and each of the second display electrodes 354a is respectively corresponding to the corresponding The second conductive via 364 is electrically connected to the other of the connection electrodes 120 on the non-display area 110b (shown in FIG. 1A).

4 is a cross-sectional view of a touch display panel in accordance with a fourth embodiment of the present invention. The touch display panel 400 of the fourth embodiment is similar to the touch display panel 100 of FIG. 1A. This embodiment describes the touch display panel 400 by using FIG. 1A, FIG. 4A and FIG. It is to be noted that the same or similar reference numerals in FIGS. 1B, 1C, 4A, and 4B denote the same or similar members, and thus the components described in FIG. 1B and FIG. 1C will not be described again. In the present embodiment, the second display electrode 454a of the display element 450 covers the display dielectric layer 456, a portion of the fill region 458, and a portion of the buffer layer 140. More specifically, the second display electrode 454a extends from the display dielectric layer 456 onto the buffer layer 140 and contacts the sidewalls of the fill region 458.

In the embodiment, the conductive via 460 includes a plurality of first conductive vias 462 and a plurality of second conductive vias 464. The first conductive via 462 is connected between the first display electrode 452 a and the partial connection electrode 120 , and the first conductive via 462 extends through the buffer layer 140 and the touch element layer 130 . The second conductive via 464 is connected between the second display electrode 454 a and the remaining connection electrode 120 , and the second conductive via 464 extends through the buffer layer 140 and the touch element layer 130 . In this embodiment, a through hole may be formed in the buffer layer 140 and the touch element layer 130 by etching, grinding drilling, laser drilling or other processes, and then the conductive material is filled in the through hole. A conductive via 460 is formed in the buffer layer 140 and the touch element layer 130. Each of the first display electrodes 452a is electrically connected to one of the connection electrodes 120 on the non-display area 110b (shown in FIG. 1A) through the corresponding first conductive via 462, and each of the second display electrodes 454a is respectively corresponding to the corresponding display electrode 454a. The second conductive via 464 is electrically connected to the other of the connection electrodes 120 on the non-display area 110b (shown in FIG. 1A).

FIG. 5 is a top plan view of a touch display panel according to a fifth embodiment of the present invention. For clarity, a partial film layer is omitted in FIG. 5 . The touch display panel 500 in this embodiment is similar to the touch display panel 100 in FIG. In the touch display panel 500, the touch element layer (not shown) includes a plurality of sensing electrodes 532 electrically insulated from each other and a plurality of shielding electrodes 580, wherein the shielding electrodes 580 are located on the non-display area 110b of the substrate 110, The shielding electrode 580 is disposed between the connection electrodes 520. In this embodiment, a controller coupled to the touch display panel 500 can connect the ground signal to the at least one shielding electrode 580. In this manner, the shielding electrode 580 can reduce the interference between the display signal and the sensing signal, thereby improving the display and touch quality of the touch display panel 500 of the embodiment of the present invention.

FIG. 6A is a bottom view of a touch display panel according to a sixth embodiment of the present invention. For clarity, a partial film layer is omitted in FIG. 6A. Fig. 6B is a schematic cross-sectional view taken along line C-C' of Fig. 6A. The touch display panel 600 of the sixth embodiment is similar to the touch display panel 100 of FIG. 1A. Therefore, the same or similar components are denoted by the same or similar reference numerals. It should be noted that the bottom view of FIG. 6A only shows the display area portion of the touch display panel (corresponding to the display area 110a of FIG. 1A). In FIG. 6B, although the second display electrode 154a does not appear on the line C-C', the projection range of the second display electrode 154a is still drawn in a broken line to indicate the first display electrode 152a. The relative positions of the dielectric layer 156 and the second display electrode 154a are displayed. In the present embodiment, the buffer layer 640 is disposed on the sensing electrode 632, and the sensing electrode 632 and the display element 150 are respectively located on opposite sides of the buffer layer 640. In addition, the buffer layer 640 electrically insulates the first display electrode 152a and the sensing electrode 632 from each other. Moreover, the sensing electrode 632 located in the display area 110a (shown in FIG. 1A) has the same extending direction as the second display electrode 154a, for example, and the sensing electrode 632 does not overlap with the second display electrode 154a.

In the embodiment, the first display electrode 152a can be used not only as the display electrode of the display element 150 but also as the sensing electrode of the sensing element. In other words, the first display electrode 152a can receive the display signal and the sensing signal respectively in different time intervals through appropriate time-division driving. When the first display electrode 152a receives the display signal in a time interval, the first display electrode 152a And the second display electrode 154a can drive the display medium layer 156 to display a desired image; when the first display electrode 152a receives the sensing signal in another time interval, the sense of the first display electrode 152a and the touch element layer 630 The measuring electrode 632 can be used to sense changes in electrical properties (eg, capacitance, resistance, etc.) generated by a user's touch. At this time, if the user touches the touch display panel 600, the electrical change sensed by the first display electrode 152a and the sensing electrode 632 can be detected and recognized by a controller connected to the touch component layer 630.

7A is a bottom view of a touch display panel according to a seventh embodiment of the present invention. For clarity, a portion of the film layer is omitted in FIG. 7A, and the bottom view of FIG. 7A only shows the display area of the touch display panel. Part (corresponding to the display area 110a of Fig. 1A). Fig. 7B is a schematic cross-sectional view taken along line D-D' of Fig. 7A. The touch display panel 700 of the seventh embodiment is similar to the touch display panel 100 of FIG. 1A. In this embodiment, the touch element layer 730 includes a plurality of sensing electrodes 732 electrically insulated from each other, and the sensing electrodes 732 include The plurality of first sensing electrodes 732a and the plurality of second sensing electrodes 732b, wherein the sensing electrodes 732 are disposed on the buffer layer 740, and the sensing electrodes 732 and the display elements 150 are respectively located on opposite sides of the buffer layer 740. In addition, the buffer layer 740 electrically insulates the first display electrode 152a, the first sensing electrode 732a, and the second sensing electrode 732b from each other.

In the present embodiment, the first sensing electrode 732a and the second sensing electrode 732b, which are located in the display area 110a (shown in FIG. 1A), are all, for example, meshed electrodes. For example, the first sensing electrode 732a has, for example, a first portion 732a1 (eg, a vertical portion) having the same extending direction as the first display electrode 152a and a second portion 732a2 having the same extending direction as the second display electrode 154a (eg, horizontal Part), wherein the first portion 732a1 (ie, the vertical portion) does not overlap the first display electrode 152a, and the second portion 732a2 (ie, the horizontal portion) does not overlap the second display electrode 154a. The second sensing electrode 732b has a third portion 732b1 (for example, a vertical portion) having the same extending direction as the first display electrode 152a and a fourth portion 732b2 (for example, a horizontal portion) having the same extending direction as the second display electrode 154a. Wherein the third portion 732b1 does not overlap the first display electrode 152a, and the fourth portion 732b2 does not overlap the second display electrode 154a. As shown in FIGS. 7A and 7B, the first sensing electrode 732a and the second sensing electrode 732b are adapted to sense an electrical change generated by a user's touch.

FIG. 8A is a bottom view of a touch display panel according to an eighth embodiment of the present invention. For clarity, a partial film layer is omitted in FIG. 8A. Fig. 8B is a schematic cross-sectional view taken along line E-E' of Fig. 8A. It should be noted that the bottom view of FIG. 8A only shows the display area portion of the touch display panel (corresponding to the display area 110a of FIG. 1A). In FIG. 8B, although the second display electrode 154a does not appear on the line E-E', the projection range of the second display electrode 154a is still drawn in a broken line to indicate the first display electrode 152a. The relative positions of the dielectric layer 156 and the second display electrode 154a are displayed. The touch display panel 800 of the eighth embodiment is similar to the touch display panel 100 of FIG. 1A. In this embodiment, the touch element layer 830 includes a plurality of sensing electrodes 832 electrically insulated from each other, and the sensing electrodes 832 The plurality of first sensing electrodes 832a and the plurality of second sensing electrodes 832b are disposed, wherein the sensing electrodes 832 are disposed on the buffer layer 840, and the sensing electrodes 832 and the display elements 150 are respectively located on opposite sides of the buffer layer 840. In addition, the buffer layer 840 electrically insulates the first display electrode 152a, the first sensing electrode 832a, and the second sensing electrode 832b from each other.

The touch device layer 830 in this embodiment may further have an insulating layer 834, wherein the first sensing electrodes 832a and the second sensing electrodes 832b are disposed on the insulating layer 834, and the second sensing electrodes 832b are disposed in the insulating layer. The first sensing electrode 832a between the layer 834 and the buffer layer 840 and located in the display area 110a (shown in FIG. 1A) is, for example, a mesh electrode. For example, the first sensing electrode 832a has, for example, a first portion 832a1 (eg, a vertical portion) having the same extending direction as the first display electrode 152a, and a second portion 832a2 and a portion having the same extending direction as the second display electrode 154a. Three parts 832a3 (eg horizontal part). The first portion 832a1 of the first sensing electrode 832a does not overlap the first display electrode 152a, and is disposed on the insulating layer 834 and is the same as one side of the second sensing electrode 832b. The second portion 832a2 of the first sensing electrode 832a does not overlap with the second display electrode 154a, and is disposed on the insulating layer 834 and is the same as one side of the second sensing electrode 832b. The third portion 832a3 of the first sensing electrode 832a does not overlap the second display electrode 154a and is disposed on the insulating layer 834 and opposite to one side of the second sensing electrode 832b. In other words, the first portion 832a1 and the second portion 832a2 of the first display electrode 152a are located on the same side of the insulating layer 834 as the second sensing electrode 832b. The third display portion 832a3 of the first display electrode 152a and the second sensing electrode 832b are located on opposite sides of the insulating layer 834. In the first sensing electrode 832a, the first portion 832a1 overlaps the third portion 832a3, the first portion 832a1 of the first sensing electrode 832a penetrates the insulating layer 834 to be opposite the third portion 832a3 on the opposite side of the insulating layer 834. Electrical connection. As shown in FIG. 8A and FIG. 8B, the first sensing electrode 832a and the second sensing electrode 832b are adapted to sense an electrical change generated by a user's touch.

FIG. 9A is a top plan view of a touch display panel according to a ninth embodiment of the present invention. For clarity, a partial film layer is omitted in FIG. 9A. The touch display panel 900 of the ninth embodiment is similar to the touch display panel 100 of FIG. 1A. In this embodiment, the second display electrode 954a located in the display area 110a (shown in FIG. 1A) and the first display electrode 952a. The overlap, and the second display electrode 954a includes a plurality of necked portions that are not overlapped with the first display electrode 952a. As shown in FIG. 9A, the necked portion of the second display electrode 954a is staggered and overlaps with the sensing electrode 932. Since the necked portion of the second display electrode 954a has a smaller width than the other portions, the overlapping area of the necked portion of the second display electrode 954a and the sensing electrode 932 is not excessive. In other words, the overlapping area of the second display electrode 954a and the sensing electrode 932 can be minimized to reduce the interference between the display signal and the sensing signal, thereby improving the display and touch quality of the touch display panel 900.

FIG. 9B is a top plan view of a touch display panel according to a tenth embodiment of the present invention. For clarity, a partial film layer is omitted in FIG. 9B. The touch display panel 900 ′ of the tenth embodiment is similar to the touch display panel 900 of FIG. 9A . In this embodiment, the length of the necked portion of the second display electrode 954 a ′ is smaller than that between the adjacent two first display electrodes 952 a ′′. the distance. Similarly, the overlapping area of the second display electrode 954a ′ and the sensing electrode 932 ′ can be minimized to reduce the interference between the display signal and the sensing signal, thereby improving the display and touch quality of the touch display panel 900 ′ of the present invention. .

10A is a top view of a touch display panel according to an eleventh embodiment of the present invention. For clarity, a portion of the film layer is omitted in FIG. 10A, and the top view of FIG. 10A only shows the display of the touch display panel. The area 110a and the non-display area 110b are connected to each other. Fig. 10B is a schematic cross-sectional view taken along line F-F' of Fig. 10A. The touch display panel 1000 of the eleventh embodiment is similar to the touch display panel 100 of FIG. 1A. In this embodiment, the touch element layer 1030 includes a plurality of sensing electrodes 1032 electrically insulated from each other, wherein the sensing electrodes 1032 can be a two-layer electrode structure. In detail, the sensing electrode 1032 located in the display area 110a includes a plurality of first sensing electrodes 1032a and a plurality of second sensing electrodes 1032b, and the second sensing electrodes 1032b located in the display area 110a are located at the first sensing electrodes. 1032a is between the substrate 110. The insulating layer 1034 is disposed between the adjacent first sensing electrodes 1032a, between the adjacent second sensing electrodes 1032b, and between the first sensing electrodes 1032a and the second sensing electrodes 1032b, so as to be adjacent The first sensing electrode 1032a, the adjacent second sensing electrode 1032b, and the first sensing electrode 1032a and the second sensing electrode 1032b are electrically insulated from each other.

In the present embodiment, the sensing electrode 1032 further extends to the non-display area 110b. The sensing electrode 1032 located in the non-display area 110b further includes a plurality of first sensing electrodes 1032a', and the first sensing electrodes 1032a' and the second sensing electrodes 1032b are located on the substrate 110. Further, the first sensing electrode 1032a' located in the non-display area 110b may cover a portion of the insulating layer 1034 located in the display area 110a and be electrically connected to the corresponding first sensing electrode 1032a located in the non-display area 110b. As shown in FIGS. 10A and 10B, the first sensing electrode 1032a and the second sensing electrode 1032b are adapted to sense an electrical change generated by a user's touch. When the user touches the touch display panel 1000, the electrical changes sensed by the first sensing electrode 1032a and the second sensing electrode 1032b can be detected and recognized by a controller connected to the touch component layer 1030.

11A is a top view of a touch display panel according to a twelfth embodiment of the present invention. For clarity, a partial film layer is omitted in FIG. 11A, and the top view of FIG. 11A only shows the display of the touch display panel. The area 110a and the non-display area 110b are connected to each other. Fig. 11B is a schematic cross-sectional view taken along line G-G' of Fig. 11A. The touch display panel 1100 of the twelfth embodiment is similar to the touch display panel 1000 of FIG. 10A. In this embodiment, the insulating layer 1134 can extend to the non-display area 110b, and the sensing electrode 1132 can also extend to non-display. Zone 110b. The sensing electrode 1132 located in the non-display area 110b includes a plurality of first sensing electrodes 1132a', and the first sensing electrodes 1132a' and the second sensing electrodes 1132b are located on the substrate 110. Further, the insulating layer 1134 located in the non-display area 110b has a conductive via 1160. The first sensing electrodes 1132a' located in the non-display area 110b are electrically connected to one of the first sensing electrodes 1032a on the display area 110a through the corresponding conductive vias 1160, respectively. As shown in FIGS. 11A and 11B, the first sensing electrode 1132a and the second sensing electrode 1132b are adapted to sense an electrical change produced by a user's touch. When the user touches the touch display panel 1100, the electrical changes sensed by the first sensing electrode 1132a and the second sensing electrode 1132b can be detected and recognized by a controller connected to the touch component layer 1130.

12A is a top view of a touch display panel according to a thirteenth embodiment of the present invention. For clarity, a partial film layer is omitted in FIG. 12A, and the top view of FIG. 12A only shows the display of the touch display panel. The area 110a and the non-display area 110b are connected to each other. Fig. 12B is a schematic cross-sectional view taken along line H-H' of Fig. 12A. The touch display panel 1200 of the thirteenth embodiment is similar to the touch display panel 100 of FIG. 1A. In this embodiment, the touch element layer 1230 includes a plurality of sensing electrodes 1232 electrically insulated from each other, wherein the sensing electrodes The 1232 can be a single layer electrode structure or a bridge electrode structure. In detail, the sensing electrode 1232 located in the display area 110a includes a plurality of first sensing electrodes 1232a and a plurality of second sensing electrodes 1232b, and the first sensing electrodes 1232a and the second sensing electrodes 1232b are located on the substrate 110. . The insulating layer 1234 is disposed between the adjacent first sensing electrodes 1232a, between the adjacent second sensing electrodes 1232b, and between the first sensing electrodes 1232a and the second sensing electrodes 1232b, so as to be adjacent The first sensing electrode 1232a, the adjacent second sensing electrode 1232b, and the first sensing electrode 1232a and the second sensing electrode 1232b are electrically insulated from each other. Further, the touch device layer 1230 of the display area 110a has a touch bridge 1236, wherein the insulating layer 1234 is located between the touch bridge 1236 and the second sensing electrode 1232b, and the touch bridge 1236 and the second sensing electrode 1232b are Electrically insulated from each other. The insulating layer 1234 of the display area 110a may have a conductive via 1260. The first sensing electrodes 1232a of the display area 110a are electrically connected to the corresponding touch bridge 1236 through the corresponding conductive vias 1260.

In the present embodiment, the sensing electrode 1232 can extend to the non-display area 110b. The sensing electrode 1232 located in the non-display area 110b further includes a plurality of first sensing electrodes 1232a', and the first sensing electrodes 1232a' and the second sensing electrodes 1232b are located on the substrate 110. Further, the first sensing electrode 1232a' located in the non-display area 110b covers a portion of the insulating layer 1234 located in the display area 110a, and is electrically connected to the corresponding touch frame bridge 1236 located in the non-display area 110b. As shown in FIG. 12A and FIG. 12B, the first sensing electrode 1232a and the second sensing electrode 1232b are adapted to sense an electrical change generated by a user's touch. When the user touches the touch display panel 1200, the electrical changes sensed by the first sensing electrode 1232a and the second sensing electrode 1232b can be detected and recognized by a controller connected to the touch component layer 1230.

FIG. 13A is a top view of a touch display panel according to a fourteenth embodiment of the present invention. For clarity, a partial film layer is omitted in FIG. 13A, and the top view of FIG. 13A only shows the display of the touch display panel. The area 110a and the non-display area 110b are connected to each other. Fig. 13B is a schematic cross-sectional view taken along line I-I' of Fig. 13A. The touch display panel 1300 of the fourteenth embodiment is similar to the touch display panel 1200 of FIG. 12A. In this embodiment, the insulating layer 1334 can extend to the non-display area 110b, and the sensing electrode 1332 can also extend to non-display. Zone 110b. The sensing electrode 1332 located in the non-display area 110b includes a plurality of first sensing electrodes 1332a, and the first sensing electrodes 1332a and the second sensing electrodes 1332b are located on the substrate 110. Further, the insulating layer 1334 has conductive vias 1360. Each of the first sensing electrodes 1332a located in the non-display area 110b is electrically connected to one of the touch bridges 1336 located on the display area 110a through the corresponding conductive vias 1360. As shown in FIG. 13A and FIG. 13B, the first sensing electrode 1332a and the second sensing electrode 1332b are adapted to sense an electrical change generated by a user's touch. When the user touches the touch display panel 1300, the electrical changes sensed by the first sensing electrode 1332a and the second sensing electrode 1332b can be detected and recognized by a controller connected to the touch component layer 1330.

FIG. 14A is a top view of a touch display panel according to a fifteenth embodiment of the present invention. For clarity, a partial film layer is omitted in FIG. 14A, and the top view of FIG. 14A only shows the display of the touch display panel. The area 110a and the non-display area 110b are connected to each other. Fig. 14B is a schematic cross-sectional view taken along line J-J' of Fig. 14A. The touch display panel 1400 of the fifteenth embodiment is similar to the touch display panel 1300 of FIG. 13A. In this embodiment, the insulating layer 1434 can extend to the non-display area 110b, and the sensing electrode 1432 can also be extended to non-display. Zone 110b. The sensing electrode 1432 located in the non-display area 110b includes a plurality of first sensing electrodes 1432a, and the first sensing electrodes 1432a and the second sensing electrodes 1432b are located on the insulating layer 1434. Further, the insulating layer 1434 has conductive vias 1460. Each of the first sensing electrodes 1432a located in the non-display area 110b is electrically connected to one of the touch bridges 1436 located on the display area 110a through the corresponding conductive vias 1460. As shown in FIG. 14A and FIG. 14B, the first sensing electrode 1432a and the second sensing electrode 1432b are adapted to sense an electrical change generated by a user's touch. When the user touches the touch display panel 1400, the electrical changes sensed by the first sensing electrode 1432a and the second sensing electrode 1432b can be detected and recognized by a controller connected to the touch component layer 1430.

15 is a top plan view of a touch display panel according to a sixteenth embodiment of the present invention. For clarity, a partial film layer is omitted in FIG. The touch display panel 1500 of the sixteenth embodiment is similar to the touch display panel 100 of FIG. 1A. In this embodiment, the first electrode layer 1552 includes a pixel array 1590, and the second electrode layer (not shown) includes A common electrode 1554b, wherein the pixel array 1590, the display medium layer (not shown) and the common electrode 1554b are stacked on a buffer layer (not shown), and the pixel array 1590 and the common electrode 1554b can extend from the display area 1510a to the non- Display area 1510b.

In the present embodiment, the scan line SL and the data line DL are staggered with each other (only part of the scan line SL and the data line DL are schematically illustrated in FIG. 15) to define the area where each sub-pixel SP is located. Also, the aforementioned sub-pixels SP are arranged in an array to form a pixel array 1590. In addition, a scan line driving circuit (not shown) for driving the pixel array 1590 is coupled to the pixel array 1590 by a plurality of scanning lines SL for driving the data line driving circuit of the pixel array 1590 (not shown). ) is coupled to the pixel array 1590 by a plurality of data lines DL. Each of the sub-pixels SP includes an active element AD and a pixel electrode PE, wherein each of the active elements AD is electrically connected to the corresponding scan line SL and the data line DL, and each sub-pixel SP is connected to one of the scan lines SL And the electric signal drive transmitted by one of the data lines DL.

In the present embodiment, the active element AD is, for example, a thin film transistor or other switching element having three terminals. Taking a thin film transistor as an example, the gate of the thin film transistor is electrically connected to the corresponding scan line SL, the source of the thin film transistor is electrically connected to the corresponding data line DL, and the drain of the thin film transistor is connected to the pixel. The electrode PE is electrically connected. In an embodiment, each sub-pixel SP and common electrode 1554b can be used to drive a display medium layer (not shown). For example, the common electrode 1554b can be grounded or electrically connected to a common voltage V _SS .

The touch display panel according to an embodiment of the present invention can effectively integrate the line layout of the touch element layer and the display element in the peripheral area of the touch display panel. The touch display panel of the embodiment of the invention can integrate the touch component layer and the display component on the same substrate, thereby reducing the thickness of the touch display panel. Further, the touch display panel of the embodiment of the present invention has a shielding electrode, which can reduce the crosstalk of the display signal and the sensing signal, thereby improving the display and touch quality of the touch display panel of the embodiment of the present invention. .

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention, and any one of ordinary skill in the art can make some changes and refinements without departing from the spirit and scope of the present invention. The scope of the invention is defined by the scope of the appended claims and their equivalents.

100, 200, 300, 400, 500, 600, 700, 800, 900, 900', 1000, 1100, 1200, 1300, 1400, 1500: touch display panel 110: substrates 110a, 1510a: display areas 110b, 1510b: Non-display area 112: substrate protection structures 120, 220, 520, 1520: connection electrodes 130, 230, 630, 730, 830, 1030, 1130, 1230, 1330, 1430: touch element layers 532, 632, 732, 832, 932, 932', 1032, 1132, 1232, 1332, 1432: sensing electrodes 732a, 832a, 1032a, 1032a', 1132a, 1232a, 1232a', 1332a, 1432a: first sensing electrodes 732b, 832b, 1032b, 1132b , 1232b, 1332b, 1432b: second sensing electrodes 732a1, 832a1: first portions 732a2, 832a2: second portions 732b1, 832a3: third portion 732b2: fourth portions 834, 1034, 1134, 1234, 1334, 1434: insulation Layers 1236, 1336, 1436: touch bridge 140, 240, 640, 740, 840: buffer layers 150, 350, 450: display elements 152, 352, 452, 1552: first electrode layers 152a, 352a, 452a, 952a, 952a', 1552a: first display electrodes 154, 354, 454: second electrode layer 154a, 354a, 454a, 954a, 954a': second display electrode 1554b: common electrode 156, 356, 456: display medium layer 158, 358, 458: filled area DL: data line SL: scan line PE: pixel electrode SP: sub The pixel AD: active elements 160, 260, 360, 460, 1160, 1260, 1360, 1460, 1560: conductive vias 162, 262, 362, 462, 1562: first conductive vias 164, 264, 364, 464, 1564: second conductive via 170: barrier layer 580: shield electrode 1590: pixel array

FIG. 1A is a top plan view of a touch display panel according to a first embodiment of the present invention. Fig. 1B and Fig. 1C are schematic cross-sectional views taken along line A-A' and B-B' in Fig. 1A. 2A and 2B are schematic cross-sectional views of a touch display panel according to a second embodiment of the present invention. 3A and 3B are schematic cross-sectional views of a touch display panel according to a third embodiment of the present invention. 4A and 4B are schematic cross-sectional views of a touch display panel according to a fourth embodiment of the present invention. FIG. 5 is a top plan view of a touch display panel according to a fifth embodiment of the present invention. FIG. 6A is a bottom view of a touch display panel according to a sixth embodiment of the present invention. Fig. 6B is a schematic cross-sectional view taken along line C-C' of Fig. 6A. FIG. 7A is a bottom view of a touch display panel according to a seventh embodiment of the present invention. Fig. 7B is a schematic cross-sectional view taken along line D-D' of Fig. 7A. FIG. 8A is a bottom view of a touch display panel according to an eighth embodiment of the present invention. Fig. 8B is a schematic cross-sectional view taken along line E-E' of Fig. 8A. 9A is a top plan view of a touch display panel according to a ninth embodiment of the present invention. 9B is a top plan view of a touch display panel according to a tenth embodiment of the present invention. FIG. 10A is a top plan view of a touch display panel according to an eleventh embodiment of the present invention. Fig. 10B is a schematic cross-sectional view taken along line F-F' of Fig. 10A. FIG. 11A is a top plan view of a touch display panel according to a twelfth embodiment of the present invention. Fig. 11B is a schematic cross-sectional view taken along line G-G' of Fig. 11A. FIG. 12A is a top plan view of a touch display panel according to a thirteenth embodiment of the present invention. Fig. 12B is a schematic cross-sectional view taken along line H-H' of Fig. 12A. FIG. 13A is a top plan view of a touch display panel according to a fourteenth embodiment of the present invention. Fig. 13B is a schematic cross-sectional view taken along line I-I' of Fig. 13A. FIG. 14A is a top plan view of a touch display panel according to a fifteenth embodiment of the present invention. Fig. 14B is a schematic cross-sectional view taken along line J-J' of Fig. 14A. 15 is a top plan view of a touch display panel in accordance with a sixteenth embodiment of the present invention.

100: touch display panel 110: substrate 110a: display area 110b: non-display area 112: substrate protection structure 120: connection electrode 130: touch element layer 140: buffer layer 150: display element 152: first electrode layer 152a: A display electrode 154: second electrode layer 154a: second display electrode 156: display dielectric layer 158: filling region 164: second conductive via 170: barrier layer

Claims (19)

A touch display panel includes: a substrate having a display area and a non-display area connected to the display area; a plurality of connection electrodes located on the non-display area of the substrate; a touch element layer located at the a display layer on the display area; a buffer layer covering the touch element layer; a display element disposed on the buffer layer and corresponding to the display area, the display element comprising a first electrode layer, a first a second electrode layer and a display medium layer between the first electrode layer and the second electrode layer, wherein the first electrode layer and the second electrode layer extend from the display area to the non-display area; and a plurality of conductive layers The via hole extends through the buffer layer and is corresponding to the non-display area. The first electrode layer and the second electrode layer are electrically connected to the connection electrodes through the conductive vias. The touch display panel of claim 1, wherein the touch element layer extends further to the non-display area. The touch display panel of claim 1, wherein the conductive vias extend through the buffer layer and the touch element layer. The touch display panel of claim 1, wherein the first electrode layer comprises a plurality of first display electrodes, and the second electrode layer comprises a plurality of second display electrodes, the first display electrodes, The display medium layer and the second display electrodes are stacked on the buffer layer, and the first display electrodes and the second display electrodes extend from the display area to the non-display area. The touch display panel of claim 4, wherein the display element further comprises: a first filling region disposed between the first display electrodes to insulate the plurality of first display electrodes from each other. The touch display panel of claim 4, wherein the display element further comprises: a second filling region disposed between the second display electrodes to insulate the plurality of second display electrodes from each other. The touch display panel of claim 4, wherein the conductive vias comprise a plurality of first conductive vias and a plurality of second conductive vias, wherein the first conductive vias are connected to the first conductive vias A display electrode and a portion of the connection electrodes are disposed, and the second conductive vias are connected between the second display electrodes and the remaining connection electrodes. The touch display panel of claim 7, wherein the first conductive vias extend through the buffer layer and the touch device layer, and the second conductive vias penetrate the buffer layer and the touch The element layer and the display medium layer. The touch display panel of claim 7, wherein the first conductive vias extend through the buffer layer and the touch device layer, and the second conductive vias penetrate the buffer layer and the touch The component layer and a portion of the display component. The touch display panel of claim 9, wherein the second electrode layer extends to the second conductive vias not covered by the display medium layer, and the second electrode layer transmits the second conductive layer The two conductive vias are electrically connected to a portion of the connecting electrodes. The touch display panel of claim 1, further comprising a barrier layer, wherein the barrier layer is disposed between the second electrode layer and the substrate, on an outer surface of the substrate, or the first On the two electrode layers. The touch display panel of claim 1, wherein the second electrode layer extends to the buffer layer not covered by the touch element layer, and the second electrode layer transmits a portion of the conductive vias And a part of the connecting electrodes are electrically connected. The touch display panel of claim 1, wherein the touch element layer comprises a plurality of sensing electrodes electrically insulated from each other. The touch display panel of claim 13 further comprising a plurality of shielding electrodes, wherein the shielding electrodes are located on the non-display area of the substrate, and the shielding electrodes are disposed between the connection electrodes. The touch display panel of claim 13 , wherein the sensing electrodes are disposed on the buffer layer, and the sensing electrodes and the display elements are respectively located on opposite sides of the buffer layer, and the senses are The measuring electrode and the first electrode layer are adapted to sense an electrical change produced by a user's touch. The touch display panel of claim 13 , wherein the sensing electrodes comprise a plurality of first sensing electrodes and a plurality of second sensing electrodes disposed on the buffer layer, and the first The sensing electrodes and the second sensing electrodes are adapted to sense an electrical change produced by a user touch. The touch display panel of claim 13, wherein the sensing electrodes comprise a plurality of first sensing electrodes, a plurality of second sensing electrodes, and a plurality of first sensing electrodes and the plurality of sensing electrodes An insulating layer between the second sensing electrodes, the first sensing electrodes, the insulating layer and the second sensing electrodes are stacked on the buffer layer, and the first sensing electrodes and the second The sensing electrode is adapted to sense an electrical change produced by a user's touch. The touch display panel of claim 1, wherein the first electrode layer comprises a pixel array, and the second electrode layer comprises a common electrode, the pixel array, the display medium layer and the common An electrode is stacked on the buffer layer, and the pixel array and the common electrode extend from the display area to the non-display area. The touch display panel of claim 18, wherein the conductive vias comprise a plurality of first conductive vias and at least one second conductive via, the first conductive vias being connected to the pixel Between the array and a portion of the connecting electrodes, and the second conductive via is connected between the common electrode and the remaining connecting electrodes.