TW201537408A - Touch display panel - Google Patents

Abstract

A touch display panel includes a display panel, a first conductive layer and a second conductive layer. The display panel includes a first substrate, a second substrate, a display medium layer, a first polarizing element and a second polarizing element. The display medium layer is located between the first polarizing element and the second polarizing element. The first substrate is located between the display medium layer and the first polarizing element. The second substrate is located between the display medium layer and the second polarizing element. The first conductive layer is located within the second polarizing element. The second conductive layer is located between the first conductive layer and the display medium layer. The first conductive layer is intersected with and electrically insulated to and the second conductive layer.

Description

Touch display panel

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

In order to achieve convenience, compactness, and user-friendly operation, many information products have been transformed from traditional keyboards or mouse input devices to touch panels as input devices, which have touch and display functions. The control panel is one of the most popular products today.

In general, the touch display panel can be divided into an add-on touch display panel and an on-cell touch display panel. The externally-mounted touch display panel usually has a display panel and a touch panel separately, and then the two are bonded together by an adhesive layer. However, this design is easy to increase the thickness and weight of the touch display panel as a whole, and the bonding process of the display panel and the touch panel is likely to increase the process cost and the loss of yield. In contrast, since the touch elements and the color filter layers of the integrated touch display panel are respectively formed on the front and back surfaces of one of the display panels, the touch control panel can be thinner and lighter than the external touch display panel. However, since the substrate on which the color filter layer is formed is turned over before the touch element is fabricated, the integrated type During the manufacturing process of the touch display panel, there is a risk of electrostatic static discharge (ESD) and the possibility of scratching the color filter layer.

Therefore, a built-in in-cell touch display panel has been developed, which integrates the touch component into the display panel, so that it can be lighter and thinner than the external touch-sensitive display panel, and can solve electrostatic discharge and scraping. The problem of injury. However, integrating the touch components into the display panel not only increases the number of process paths inherent to the display panel, but also easily causes the display signal and the touch signal to interfere with each other. As the market demand for touch display panels increases and market competition becomes more intense, the process cost and process time of touch display panels are bound to be further reduced. Therefore, how to provide a touch display panel with lightness and good reliability without significantly increasing the number of process paths inherent to the display panel is a future trend.

The invention provides a touch display panel which is light and thin and has good reliability.

A touch display panel of the present invention includes a display panel, a first conductive layer, and a second conductive layer. The display panel includes a first substrate, a second substrate, a display medium layer, a first polarizing element, and a second polarizing element. The display medium layer is located between the first polarizing element and the second polarizing element. The first substrate is between the display medium layer and the first polarizing element. The second substrate is between the display medium layer and the second polarizing element. The first conductive layer is located in the second polarizing element. The second conductive layer is between the first conductive layer and the display medium layer. The first conductive layer and the second conductive layer are staggered and electrically insulated from each other.

In an embodiment of the invention, the second polarizing element comprises polarized light a layer, a first protective layer, a second protective layer, a surface protective layer, and a first adhesive layer. The first adhesive layer is between the surface protective layer and the second substrate. The polarizing layer is located between the surface protective layer and the first adhesive layer. The first protective layer is located between the polarizing layer and the first adhesive layer. The second protective layer is located between the surface protective layer and the polarizing layer. The first conductive layer is between the surface protective layer and the first adhesive layer.

In an embodiment of the invention, the first conductive layer is disposed on the surface protective layer, and the first conductive layer is bonded to the second protective layer through the second adhesive layer.

In an embodiment of the invention, the first conductive layer is disposed on the polarizing layer and between the second protective layer and the polarizing layer or between the first protective layer and the polarizing layer.

In an embodiment of the invention, the first conductive layer and the second conductive layer are located between the first protective layer and the second protective layer, and are respectively disposed on opposite sides of the polarizing layer.

In an embodiment of the invention, the display panel further includes an active device array and a shielding layer. The active device array is located between the display medium layer and the first substrate, and the active device array includes a plurality of pixel electrodes. The shielding layer is located between the display medium layer and the second substrate, and the shielding layer includes a plurality of openings separated from each other. Each of the openings exposes a corresponding pixel electrode as viewed perpendicular to the direction of the second substrate. The second conductive layer is located between the display medium layer and the second substrate and overlaps the shielding layer, and the second conductive layer exposes the opening.

In an embodiment of the invention, the shielding layer is disposed on the second substrate, and the shielding layer is located between the second conductive layer and the second substrate.

In an embodiment of the invention, the second conductive layer includes a plurality of conductive patterns, a plurality of wires, and a plurality of pads. Each conductive pattern is electrically connected to the corresponding pad through at least one wire.

In an embodiment of the invention, the at least one conductive pattern is electrically connected to the corresponding pad through the two wires of the wire, and the two wires are respectively connected to opposite sides of the conductive pattern.

In an embodiment of the invention, each of the conductive patterns includes a plurality of grid cells connected to each other. The grid cells are arranged in at least one of a strip shape and a block shape, and are viewed from a direction perpendicular to the second substrate, and each grid unit is provided with at least one opening.

In an embodiment of the invention, the display panel further includes a color filter layer. The color filter layer is located between the shielding layer and the active device array. The color filter layer includes a plurality of filter patterns. The filter pattern is located above the pixel electrodes, and the orthographic projection of each filter pattern on the second substrate overlaps the orthographic projection of the at least one pixel electrode on the second substrate.

In an embodiment of the invention, the display panel further includes a common electrode layer. The common electrode layer is between the second conductive layer and the display medium layer. When the common electrode layer is input with the display signal, the second conductive layer is floated. When the second conductive layer is input with the touch signal, the common electrode layer is floated.

Based on the above, the touch display panel of the present invention additionally provides a first conductive layer and a second conductive layer for touch sensing between the film layers inherent to the display panel, and the first conductive layer and the second conductive layer are The layers inherent in the display panel are electrically charged to each other Sexual insulation. In other words, the touch display panel of the present invention can eliminate the conventional steps of pre-fabricating the touch component on the carrier substrate, and then attaching the carrier substrate on which the touch component is formed to the display panel. The fabrication of the insulating layer disposed between the first conductive layer and the second conductive layer in the conventional touch panel is omitted. Therefore, the touch display panel of the present invention can provide a touch display panel that is light and thin and reliable without significantly increasing the number of process paths of the display panel.

The above described features and advantages of the invention will be apparent from the following description.

100‧‧‧Touch display panel

110‧‧‧ display panel

120‧‧‧First conductive layer

122, 132‧‧‧ conductive patterns

124, 134, W‧‧‧ wires

126, 136, PAD‧‧‧ pads

130‧‧‧Second conductive layer

AD‧‧‧ active components

ADA‧‧‧Active Component Array

AD1‧‧‧ first adhesive layer

AD2‧‧‧Second Adhesive Layer

BM‧‧·shading layer

CF‧‧‧ filter pattern

CFL‧‧‧ color filter layer

CM‧‧‧share electrode layer

DL‧‧‧ data line

DM‧‧‧ display media layer

D1‧‧‧ first direction

D2‧‧‧ second direction

D3‧‧ Direction

MU1, MU2‧‧‧ grid unit

O‧‧‧ openings

P‧‧‧Photo District

PE‧‧‧ pixel electrode

PP‧‧‧ polarizing layer

PT1‧‧‧ first protective layer

PT2‧‧‧ second protective layer

P1‧‧‧First polarizing element

P2‧‧‧Second polarizing element

SL‧‧‧ scan line

SP‧‧‧Surface protection layer

SUB1‧‧‧ first substrate

SUB2‧‧‧second substrate

X‧‧‧Interlaced

A-A’‧‧‧ cut line

1 is a schematic exploded view of a touch display panel in accordance with a first embodiment of the present invention.

2 is a top plan view of the color filter layer, the second conductive layer, and the shielding layer of FIG. 1.

Figure 3 is a schematic cross-sectional view taken along line A-A' of Figure 2;

4 is a top plan view of the first conductive layer and the second conductive layer of FIG. 1.

FIG. 5 is a schematic cross-sectional view of the second polarizing element and the second conductive layer of FIG. 1. FIG.

6 to 8 are schematic cross-sectional views showing other three types of arrangement of the second polarizing element and the second conductive layer.

FIG. 9 is a top plan view showing another arrangement of the color filter layer, the second conductive layer, and the shielding layer of FIG. 1. FIG.

Figure 10 is a partial top plan view showing another arrangement of the first conductive layer and the second conductive layer.

1 is a schematic exploded view of a touch display panel in accordance with a first embodiment of the present invention. 2 is a top plan view of the color filter layer, the second conductive layer, and the shielding layer of FIG. 1. Figure 3 is a schematic cross-sectional view taken along line A-A' of Figure 2; 4 is a top plan view of the first conductive layer and the second conductive layer of FIG. 1. FIG. 5 is a schematic cross-sectional view of the second polarizing element and the second conductive layer of FIG. 1. FIG.

Referring to FIG. 1 , the touch display panel 100 includes a display panel 110 , a first conductive layer 120 , and a second conductive layer 130 . The display panel 110 includes a first substrate SUB1, a second substrate SUB2, a display dielectric layer DM, a first polarizing element P1, and a second polarizing element P2. The display medium layer DM is located between the first polarizing element P1 and the second polarizing element P2. The first substrate SUB1 is located between the display medium layer DM and the first polarizing element P1. The second substrate SUB2 is located between the display medium layer DM and the second polarizing element P2. The first conductive layer 120 is located in the second polarizing element P2. The second conductive layer 130 is located between the first conductive layer 120 and the display medium layer DM.

The display panel 110 is, for example, a liquid crystal display panel, and the display medium layer DM is, for example, a liquid crystal layer. The first substrate SUB1 and the second substrate SUB2 are, for example, light transmissive substrates, and the materials of the first substrate SUB1 and the second substrate SUB2 are, for example, glass, quartz, an organic polymer, or other suitable materials.

To change the tilting direction of the liquid crystal molecules in the liquid crystal layer, so that the display panel 110 The image panel of different gray scales can be displayed. The display panel 110 can further include an active device array ADA and a common electrode layer CM. In this embodiment, the active device array ADA and the common electrode layer CM are respectively located on opposite sides of the display medium layer DM. In detail, the active device array ADA is located between the display medium layer DM and the first substrate SUB1, and the common electrode layer CM is located between the display medium layer DM and the second substrate SUB2, but the invention is not limited thereto. In another embodiment, the active device array ADA and the common electrode layer CM may also be co-located between the display medium layer DM and the first substrate SUB1.

The active device array ADA includes a plurality of scan lines SL, a plurality of data lines DL, a plurality of active elements AD, a plurality of pixel electrodes PE, a plurality of wires W, and a plurality of pads PAD. The scan line SL intersects the data line DL to define a plurality of pixel areas P. In detail, the scan lines SL are arranged along a first direction D1 and extend along a second direction D2, respectively, and the scan lines SL are electrically connected to the corresponding pads PAD through a wire W. The data lines DL are arranged along the second direction D2 and extend along the first direction D1, respectively, and the data lines DL are electrically connected to the corresponding pads PAD through a wire W. The first direction D1 is different from the second direction D2, and the angle between the first direction D1 and the second direction D2 is greater than 0 degrees and less than 180 degrees. The first direction D1 and the second direction D2 of the present embodiment are, for example, perpendicular to each other, but the present invention is not limited thereto.

In this embodiment, an active element AD and a pixel electrode PE are disposed in each pixel region P, and the active device AD is respectively electrically connected to a corresponding one of the scan lines SL, one data line DL, and one pixel electrode PE. connection. However, the relative arrangement relationship, the connection relationship, or the pattern and number of each component in each pixel region may be Depending on the design requirements, and other people in the field who have the usual knowledge can add other components as needed.

The common electrode layer CM is, for example, a full-surface electrode layer, but the present invention is not limited thereto. In another embodiment, the common electrode layer CM may also be a patterned electrode layer according to the relative arrangement relationship or pattern design of the common electrode layer CM and the pixel electrode PE or the type of the liquid crystal. In addition, in order to prevent the common electrode layer CM from shielding the image beam, the material of the common electrode layer CM is preferably a light-transmissive conductive material such as a metal oxide. The metal oxide may be indium tin oxide, indium zinc oxide, aluminum tin oxide, aluminum zinc oxide, indium antimony zinc oxide, or other suitable oxide, or a stacked layer of at least two of the foregoing. By changing the voltage difference between the pixel electrode PE and the common electrode layer CM in the active device array ADA, the tilting direction of the liquid crystal molecules in the liquid crystal layer can be controlled, thereby enabling the display panel 110 to display images of different gray levels.

It is worth mentioning that when the common electrode layer CM is disposed between the display medium layer DM and the second conductive layer 130, the display signal and the touch signal can be input in turn to reduce the difference between the touch signal and the display signal. Mutual interference. Moreover, when one of the common electrode layer CM and the second conductive layer 130 is input with a signal, the load between the two can be reduced by floating the other. For example, when the common electrode layer CM is input with the display signal, the second conductive layer 130 is floated. When the second conductive layer 130 is input with the touch signal, the common electrode layer CM is floated.

In order to reduce the visibility of these non-transmissive elements (such as driving elements, traces, metal layers, etc.) in the display panel 110, the display panel 110 may further include a shielding layer BM between the display medium layer DM and the second substrate SUB2. . Shielding layer BM The material is, for example, a resin doped with color or other suitable material having a good light-shielding effect and low reflection characteristics.

In addition to being able to shield the opaque element, the shielding layer BM is also capable of passing the image beam from the pixel electrode PE. Therefore, the shielding layer BM includes a plurality of openings O that are separated from each other. Each of the openings O exposes a corresponding pixel electrode PE by a direction D3 perpendicular to the second substrate SUB2. In detail, the opening O is disposed above the pixel electrode PE, and the size of the opening O may be larger than, smaller than, or equal to the pixel electrode PE. That is, each of the openings O may completely expose the corresponding pixel electrode PE or partially expose the corresponding pixel electrode PE by the direction D3 perpendicular to the second substrate SUB2, and the size of the opening O or The size of the exposed pixel electrode PE is determined by the design requirements.

In addition, in order to achieve full colorization of the display panel 110, the display panel 110 may further include a color filter layer CFL between the shielding layer BM and the active device array ADA. In the present embodiment, the color filter layer CFL is located between the display medium layer DM and the shielding layer BM, but the present invention is not limited thereto. In another embodiment, the color filter layer CFL can be disposed on the active device array ADA. That is, the color filter layer CFL and the active device array ADA are located on the same side of the display medium layer DM.

The color filter layer CFL includes a plurality of filter patterns CF, such as a plurality of red filter patterns, a plurality of green filter patterns, and a plurality of blue filter patterns for full color picture display. The filter pattern CF is located above the pixel electrode PE, and the orthographic projection of each filter pattern CF on the second substrate SUB2 overlaps the orthographic projection of the at least one pixel electrode PE on the second substrate SUB2. In this embodiment, the red filter pattern and the green filter The pattern and the blue filter pattern are, for example, alternately arranged in the second direction D2 and extend in the first direction D1, respectively. Further, the orthographic projection of each of the filter patterns CF on the second substrate SUB2 is superposed on the orthographic projection of the plurality of pixel electrodes PE arranged in the first direction D1 on the second substrate SUB2. In other words, the orthographic projection of each of the filter patterns CF on the second substrate SUB2 overlaps the orthographic projection of the plurality of openings O arranged in the first direction D1 on the second substrate SUB2 (as shown in FIG. 2).

The first polarizing element P1 and the second polarizing element P2 are respectively polarized plates, for example, and the first polarizing element P1 and the second polarizing element P2 respectively include a polarizing layer PP, a first protective layer PT1, and a second protective layer PT2, respectively. A surface protective layer SP and a first adhesive layer AD1 (only the above-mentioned film layer of the second polarizing element P2 is illustrated in FIG. 1). In the second polarizing element P2, the first adhesive layer AD1 is located between the surface protective layer SP and the second substrate SUB2, the polarizing layer PP is located between the surface protective layer SP and the first adhesive layer AD1, and the first protective layer PT1 is located in the polarized light. The layer PP is between the first adhesive layer AD1 and the second protective layer PT2 is located between the surface protective layer SP and the polarizing layer PP. In the first polarizing element P1, a first adhesive layer, a first protective layer, a polarizing layer, a second protective layer, and a surface protective layer, which are not illustrated, are sequentially stacked on the first substrate SUB1, for example.

One of the first conductive layer 120 and the second conductive layer 130 is, for example, a driving electrode in touch sensing, and the other one is used, for example, as a sensing electrode in touch sensing. For example, the first conductive layer 120 serves as a sensing electrode in touch sensing, and the second conductive layer 130 serves as a driving electrode in touch sensing, but the invention is not limited thereto.

The first conductive layer 120 and the second conductive layer 130 are staggered and electrically insulated from each other. In this embodiment, as shown in FIGS. 1 and 5, the first conductive layer 120 is located between the surface protective layer SP and the first adhesive layer AD1. In detail, the first conductive layer 120 is disposed on the surface protection layer SP, and the first conductive layer 120 is bonded to the second protective layer PT2 through a second adhesive layer AD2, wherein the first conductive layer 120 and the second conductive layer are bonded. The adhesive layer AD2 is located between the surface protective layer SP and the second protective layer PT2. The second adhesive layer AD2 is, for example, a UV Light Curing Adhesive or a Visible Light Curing Adhesive. In addition, the method of bonding the first conductive layer 120 and the second protective layer PT2 may be to apply the ultraviolet light hardening adhesive or the visible light hardening adhesive to the first conductive layer 120 and the second protective layer PT2 at least partially or partially. After one, the two are glued together by means of illumination and pressing.

In the present embodiment, as shown in FIGS. 2 and 3, the second conductive layer 130 is located between the display medium layer DM and the second substrate SUB2 and overlaps with the shielding layer BM. In detail, the shielding layer BM of the present embodiment is disposed on the second substrate SUB2, and the shielding layer BM is located between the second conductive layer 130 and the second substrate SUB2. In addition, the second conductive layer 130 is disposed on the shielding layer BM, and the color filter layer CFL is disposed on the second conductive layer 130 and the shielding layer BM. However, the relative stacking relationship of the shielding layer BM, the color filter layer CFL, and the second conductive layer 130 of the present invention is not limited to the above.

The second conductive layer 130 includes a plurality of conductive patterns 132, a plurality of wires 134, and a plurality of pads 136. Each of the conductive patterns 132 is electrically connected to the corresponding pad 136 through at least one wire 134. In this embodiment, as shown in FIG. 1 and FIG. 2, each conductive The pattern 132 is electrically connected to the corresponding pad 136 through a wire 134, but the invention is not limited thereto.

Each of the conductive patterns 132 includes a plurality of mesh cells MU1 connected to each other. In the present embodiment, the grid cells MU1 are arranged in a strip shape, and in a macroscopic view, the conductive patterns 132 are arranged in the second direction D2 and extend in the first direction D1, respectively. Further, each of the grid units MU1 is surrounded by an opening O by a direction D3 perpendicular to the second substrate SUB2. In detail, the grid unit MU1 of the present embodiment is wired, for example, along the opening O such that the grid unit MU1 has a similar or identical contour to the opening O, and the second conductive layer 130 exposes the opening O. However, according to different design requirements, the shape, arrangement direction, extending direction of the grid unit MU1, the number of openings O of each grid unit MU1 or the contour of each grid unit MU1 may also be different. For example, the grid unit MU1 may also be arranged in at least one of a strip shape and a block shape. In addition, each grid unit MU1 can ring a plurality of openings O.

Since the second conductive layer 130 is disposed on the shielding layer BM, the influence of the second conductive layer 130 on the aperture ratio of the touch display panel 100 can be reduced, so that the conductive pattern 132 of the second conductive layer 130, the wires 134, and the pads 136 In addition to transparent metal oxides, it is also possible to use light-shielding metals, alloys or mixtures thereof. Alternatively, the second conductive layer 130 may also be formed by stacking at least two of a metal oxide and a metal, an alloy, and a mixture thereof. In this embodiment, the conductive patterns 132, the wires 134, and the pads 136 are made of metal, for example, and the conductive patterns 132, the wires 134, and the pads 136 are patterned, for example, by a metal layer. As a result, the second conductive layer 130 has a relatively simplified value in addition to a relatively low resistance. Process. In addition, this embodiment allows the filter pattern CF to cover the conductive pattern 132. In this way, in addition to enabling the display panel 110 to be fully colored, the filter pattern CF can also serve as a protective layer for the conductive pattern 132, thereby reducing the possibility that the conductive pattern 132 is scratched during the manufacturing process of the display panel. The overall reliability of the touch display panel 100 is improved.

Referring to FIG. 1 and FIG. 4 , in the embodiment, the first conductive layer 120 can also be designed to include a plurality of conductive patterns 122 , a plurality of wires 124 , and a plurality of pads 126 . Each of the conductive patterns 122 is electrically connected to the corresponding pad 126 through at least one of the wires 124. The conductive pattern 122, the wires 124, and the pads 126 are made of a light-transmitting metal oxide. Alternatively, the conductive pattern 122, the wires 124, and the pads 126 may be made of a metal, an alloy, or a mixture thereof. Furthermore, the conductive pattern 122, the wires 124, and the material of the pads 126 may also be a stacked layer of a metal oxide, a metal, an alloy, or a mixture thereof. In this embodiment, the conductive patterns 122, the wires 124, and the pads 126 are made of metal, for example, and the conductive patterns 122, the wires 124, and the pads 126 are patterned, for example, by a metal layer. As such, the first conductive layer 120 has a relatively simplified process in addition to having a relatively low resistance.

Considering the light transmittance of the touch display panel 100, each of the conductive patterns 122 may be designed to include a plurality of mesh units MU2 connected to each other. In the present embodiment, the grid cells MU2 are arranged in a strip shape, and in a macroscopic view, the conductive patterns 122 are arranged in the first direction D1 and extend in the second direction D2, respectively. Further, a sidewall of the conductive pattern 122 at the intersection X (represented by a solid line thick line) of the first conductive layer 120 (indicated by a broken line) and the second conductive layer 130 (indicated by a solid line thin line) is, for example, aligned with the conductive pattern Side of 132 wall. However, the pattern design or relative arrangement relationship of the conductive pattern 122 and the conductive pattern 132 of the present invention is not limited to the above.

As described above, the touch display panel 100 of the present embodiment additionally provides a first conductive layer 120 and a second conductive layer 130 for touch sensing between the film layers inherent to the display panel 110, and the first conductive layer 120 The second conductive layer 130 is electrically insulated from each other by a film layer (which may be any insulating layer disposed between the first conductive layer 120 and the second conductive layer 130) inherent in the display panel 110. Therefore, the touch display panel 100 of the present embodiment can eliminate the conventional steps of pre-fabricating the touch component on the carrier substrate, and then attaching the carrier substrate on which the touch component is formed to the display panel. The fabrication of the insulating layer disposed between the first conductive layer and the second conductive layer in the conventional touch panel is omitted. Therefore, the touch display panel 100 of the present embodiment can provide a light and thin condition without significantly increasing the number of process tracks of the display panel 110 (only two processes are required to fabricate the first conductive layer 120 and the second conductive layer 130). The touch display panel 100 is reliable.

6 to 8 are schematic cross-sectional views showing other three types of arrangement of the second polarizing element and the second conductive layer. Referring to FIG. 6 and FIG. 7 , the first conductive layer 120 may also be disposed on the polarizing layer PP and located between the second protective layer PT2 and the polarizing layer PP or on the first protective layer PT1. Between the polarizing layers PP. Alternatively, as shown in FIG. 8 , the first conductive layer 120 and the second conductive layer 130 may be disposed between the first protective layer PT1 and the second protective layer PT2 and disposed on opposite sides of the polarizing layer PP, respectively.

Figure 9 is a view of the color filter layer, the second conductive layer, and the shielding layer of Figure 1. A top view of a setup type. Referring to FIG. 9 , under the structure of FIG. 1 , at least one conductive pattern 132 of the second conductive layer 130 can be electrically connected to the corresponding pad 136 through the two wires 134 of the wire 134 (FIG. 8 shows all The conductive patterns 132 are electrically connected to the corresponding pads 136 through the two wires 134, and the two wires 134 are respectively connected to opposite sides of the conductive pattern 132. In this way, the voltage drop caused by the resistance value of the opposite sides of the conductive pattern 132 can be improved, so that the touch sensitivity of the touch display panel 100 as a whole is relatively uniform.

Figure 10 is a partial top plan view showing another arrangement of the first conductive layer and the second conductive layer. Referring to FIG. 10, in the architecture of FIG. 1, the grid cells MU2 of each conductive pattern 122 may also be arranged in a strip shape and a block shape, and the strips and blocks are alternately arranged and connected in series, for example, along the first direction D1. . In addition, the grid cells MU1 of the respective conductive patterns 132 may be arranged in a strip shape and a block shape, and the strips and the block shapes are alternately arranged and connected in series, for example, in the second direction D2. Further, the interlaced portion X is formed by, for example, overlapping one mesh unit MU2 and one mesh unit MU1, but the present invention does not need to limit the number of overlaps of the mesh unit MU2 and the mesh unit MU1 at the interlaced portion X.

In summary, the touch display panel of the present invention additionally provides a first conductive layer and a second conductive layer for touch sensing between the film layers inherent to the display panel, and the first conductive layer and the second conductive layer. They are electrically insulated from each other by a film layer inherent in the display panel. In other words, the touch display panel of the present invention can eliminate the conventional steps of pre-fabricating the touch component on the carrier substrate, and then attaching the carrier substrate on which the touch component is formed to the display panel. The fabrication of the insulating layer disposed between the first conductive layer and the second conductive layer in the conventional touch panel is omitted. Therefore, the present invention The touch display panel can provide a thin and reliable touch display panel without greatly increasing the number of process paths of the display panel.

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.

100‧‧‧Touch display panel

110‧‧‧ display panel

120‧‧‧First conductive layer

122, 132‧‧‧ conductive patterns

124, 134, W‧‧‧ wires

126, 136, PAD‧‧‧ pads

130‧‧‧Second conductive layer

AD‧‧‧ active components

ADA‧‧‧Active Component Array

AD1‧‧‧ first adhesive layer

BM‧‧·shading layer

CF‧‧‧ filter pattern

CFL‧‧‧ color filter layer

CM‧‧‧share electrode layer

DL‧‧‧ data line

DM‧‧‧ display media layer

MU1, MU2‧‧‧ grid unit

O‧‧‧ openings

P‧‧‧Photo District

PE‧‧‧ pixel electrode

PP‧‧‧ polarizing layer

PT1‧‧‧ first protective layer

PT2‧‧‧ second protective layer

P1‧‧‧First polarizing element

P2‧‧‧Second polarizing element

SL‧‧‧ scan line

SP‧‧‧Surface protection layer

SUB1‧‧‧ first substrate

SUB2‧‧‧second substrate

Claims (12)

A touch display panel includes a first display substrate, a second substrate, a display medium layer, a first polarizing element, and a second polarizing element, wherein the display medium layer is located at the first polarized light Between the element and the second polarizing element, the first substrate is located between the display medium layer and the first polarizing element, and the second substrate is located between the display medium layer and the second polarizing element; a first conductive a layer, located in the second polarizing element; and a second conductive layer between the first conductive layer and the display medium layer, the first conductive layer and the second conductive layer being staggered and electrically insulated from each other. The touch display panel of claim 1, wherein the second polarizing element comprises a polarizing layer, a first protective layer, a second protective layer, a surface protective layer and a first adhesive layer. The first adhesive layer is located between the surface protective layer and the second substrate, the polarizing layer is located between the surface protective layer and the first adhesive layer, and the first protective layer is located between the polarizing layer and the first adhesive layer The second protective layer is located between the surface protective layer and the polarizing layer, and the first conductive layer is located between the surface protective layer and the first adhesive layer. The touch display panel of claim 2, wherein the first conductive layer is disposed on the surface protective layer, and the first conductive layer is bonded to the second protective layer through a second adhesive layer. The touch display panel of claim 2, wherein the first conductive layer is disposed on the polarizing layer and located between the second protective layer and the polarizing layer Or between the first protective layer and the polarizing layer. The touch display panel of claim 2, wherein the first conductive layer and the second conductive layer are located between the first protective layer and the second protective layer, and are respectively disposed on the polarizing layer Relative sides. The touch display panel of claim 1, wherein the display panel further comprises an active device array and a shielding layer, the active device array is located between the display medium layer and the first substrate, and the active The component array includes a plurality of pixel electrodes, the shielding layer is located between the display medium layer and the second substrate, and the shielding layer includes a plurality of openings separated from each other, viewed from a direction perpendicular to the second substrate, each The opening exposes the corresponding pixel electrode, the second conductive layer is located between the display medium layer and the second substrate and overlaps the shielding layer, and the second conductive layer exposes the openings. The touch display panel of claim 6, wherein the shielding layer is disposed on the second substrate, and the shielding layer is located between the second conductive layer and the second substrate. The touch display panel of claim 6, wherein the second conductive layer comprises a plurality of conductive patterns, a plurality of wires, and a plurality of pads, each of the conductive patterns passing through at least one of the wires and the corresponding one of the wires Padded connection. The touch display panel of claim 8, wherein at least one of the conductive patterns is electrically connected to the corresponding one via the two wires of the wires, and the two wires are respectively connected to the conductive The opposite sides of the pattern. The touch display panel of claim 8, wherein each of the touch display panels The conductive pattern includes a plurality of grid cells connected to each other, the grid cells being arranged in at least one of a strip shape and a block shape, and each of the grid cells surrounds at least one of the grid cells in a direction perpendicular to the second substrate One of the openings. The touch display panel of claim 6, wherein the display panel further comprises a color filter layer, the color filter layer being located between the shielding layer and the active device array, the color filter layer comprising a plurality of filter patterns, the filter patterns are located above the pixel electrodes, and an orthographic projection of each of the filter patterns on the second substrate overlaps at least one of the pixel electrodes on the second substrate Orthographic projection. The touch display panel of claim 1, wherein the display panel further comprises a common electrode layer, the common electrode layer being located between the second conductive layer and the display medium layer, when the common electrode layer is When a display signal is input, the second conductive layer is floated, and when the second conductive layer is input with a touch signal, the common electrode layer is floated.