TWI596527B - Touch display - Google Patents

Description

Touch display device

The present invention relates to a touch display device; and more particularly to a touch display device for reducing noise and reducing resistance and capacitance load.

Nowadays, with the development of technology, in order to achieve more convenient, more humanized and lighter, many traditional electronic products have gradually changed from traditional keyboards or mice to input devices based on touch panels. Therefore, applying the touch function to the display device has become the most mainstream product.

Please refer to FIG. 1 , which is a conventional touch display device. The touch display device 1 has a first substrate 10, a second substrate 20, liquid crystal molecules 30 and a support pillar 40, wherein the liquid crystal molecules 30 and the support pillars 40 are respectively disposed between the first substrate 10 and the second substrate 20, and the liquid crystal molecules The 30 series is used to control the transmittance of the light, and the support post 40 is used to maintain the spacing between the first substrate 10 and the second substrate 20. The touch display device 1 further includes a color filter 14 , a light shielding structure 12 and an active device layer 22 , and the color filter 14 and the light shielding structure 12 are located on the first substrate 10 , and the active device layer 22 is located on the second substrate 20 . The active device layer 22 can be used to control the direction of rotation of the liquid crystal molecules 30, and then match the color distribution of the color filter 14, thereby achieving the function of display.

The touch display device 1 shown in FIG. 1 further has a touch structure 16 as a touch function. The touch structure 16 is disposed on the first substrate 10 . Specifically, the touch structure 16 is disposed on the light shielding structure 12 such that the light shielding structure 12 is located between the first substrate 10 and the touch structure 16 . Therefore, the touch structure 16 can be used as a touch function, and does not affect the resolution of the display function. However, in the touch display device 1 of FIG. 1, the active device layer 22 has a multilayer metal structure (not shown) as a metal line for transmitting signals or voltages and an electrode layer for controlling the liquid crystal molecules 30. When the touch display device 1 performs the touch function, whether the voltage is received or transmitted to the touch structure 16 is affected by the metal structure of the active device 22, so that the sensitivity of the touch function is lowered.

The invention provides a touch display device capable of shielding noise to improve touch sensitivity.

The invention provides a touch display device, which reduces the resistance and capacitance load to improve the charge and discharge performance of the electrode.

A touch display device according to an embodiment of the present invention includes a first substrate, a second substrate, a first electrode, a color filter layer, a second electrode, a third electrode, a plurality of first slits, and a plurality of Two slits. The first electrode is disposed on the first substrate, the second electrode is disposed on the second substrate, and the third electrode is disposed on the second substrate. The color filter layer is disposed on the first substrate and located between the first electrode and the first substrate. A plurality of first slits are formed on the first electrode, and a plurality of second slits are formed on the second electrode. The plurality of first slits respectively overlap the vertical projection area of the second electrode on the second substrate, and the plurality of second slits respectively overlap with the vertical projection area of the first electrode on the second substrate.

A touch display device according to an embodiment of the present invention includes a first substrate and a second substrate, and the first substrate and the second substrate can simultaneously define a plurality of pixel regions. The plurality of pixel regions respectively include a color filter, a light shielding structure, a first electrode, a plurality of first slits, a second electrode, a plurality of second slits, and a third electrode. The color filter is disposed on the first substrate, and the light shielding structure is disposed on the first substrate, and the light shielding structure is located around the color filter layer. The first electrode is disposed on the first substrate, and the first electrode has a plurality of first strip structures and a first surrounding structure, and the plurality of first strip structures are respectively connected to the first surrounding structure. The second electrode is disposed on the second substrate, and the second electrode has a plurality of second strip structures and a second surrounding structure, and the plurality of second strip structures are respectively connected to the second surrounding structure. The plurality of first slits are formed between the plurality of first strip structures or between the plurality of first strip structures and the first surrounding structure, and the plurality of second slits are formed in the plurality of second strips Between the structures or between the plurality of second strip structures and the second surrounding structure. The third electrode is disposed on the second substrate. The plurality of first slits respectively correspond to the plurality of second strip structures, and the plurality of second slits respectively correspond to the plurality of first strip structures, such that the first electrode and the second electrode have complementary shapes.

A touch display device according to an embodiment of the present invention includes a first substrate and a second substrate, and the first substrate and the second substrate can simultaneously define a plurality of pixel regions. The plurality of pixel regions may respectively include a color filter layer, a light shielding structure, a first electrode, a second electrode, and a third electrode. The color filter layer is disposed on the first substrate, and the third electrode is disposed on the second substrate. The light shielding structure is disposed on the first substrate and located around the color filter layer. The first electrode is disposed on the first substrate, and the first electrode has a plurality of first strip structures. The second electrode is disposed on the second substrate, and the second electrode has a plurality of second strip structures. A plurality of first strip structures are respectively located between two adjacent two strip structures.

Please refer to FIG. 2. FIG. 2 is a side view of a touch display device according to an embodiment of the present invention. The touch display device 100 includes a first substrate 110, a second substrate 130, a display device layer 150, a light shielding structure 112, a color filter 114, and a touch structure 116. The display device layer 150 is sandwiched between the first substrate 110 and the first substrate 110. Between the two substrates 130. In the present embodiment, the display element layer 150 may be composed of liquid crystal molecules or electrophoretic molecules, etc., and the molecular composition of the display element layer can be clearly illustrated without considering the display element layer 150. position. In this embodiment, the light shielding structure 112 and the color filter 114 are respectively disposed on the first substrate 110 , and the touch structure 116 is located on the light shielding structure 112 . In detail, the light shielding structure 112 may be a mesh structure, and the color filter 114 is located between the mesh structures of the light shielding structure 112 such that the color filter 114 and the light shielding structure 112 are disposed adjacent to each other. For example, the color filter 114 may be an organic material of red, green, and blue as the three primary colors of the display, and the light shielding structure 112 is a black organic material to prevent color filters of different colors from interfering with each other, but The present invention is not limited thereto, and the color filter 114 may also be composed of other colors, such as white or yellow materials, and the desired color may be designed according to different needs, and the light shielding structure 112 may also be a gray material. It is made of metal chromium and other materials to prevent interference and shading of adjacent color filters.

In the embodiment shown in FIG. 2 , the touch structure 116 is located on the light shielding structure 112 such that the touch structure 116 and the light shielding structure 112 overlap each other. Specifically, the vertical projection areas of the touch structure 116 and the light shielding structure 112 on the first substrate 110 overlap each other. The touch structure 116 is composed of a conductive material. When the user performs a touch operation, the capacitance value of the touch structure 116 is changed, and by detecting the change of the capacitance, the position of the touch can be understood and the command is performed. In this embodiment, the touch structure 116 can be formed of a metal, a metal oxide or an alloy, such as gold (Au), copper (Cu), or indium-tin-oxide (ITO). Since the material used in the touch structure 116 is susceptible to light reflection or refraction, the touch structure 116 may affect the user's vision. Therefore, the touch structure 116 is disposed on the light shielding structure 112 to shield the touch structure 116. The resulting light effects, which in turn optimize the display function. In addition, the touch display device 100 further has a flat layer 118 , and the flat layer 118 is disposed on the first substrate 110 . In detail, the flat layer 118 covers the color filter layer 114 and the touch structure 116 to prevent the color filter layer 114 from being contaminated or the touch structure 116 from being oxidized. However, the present invention is not limited thereto. According to different design and process requirements, the flat layer 118 may also be covered on the light shielding structure 112 as protection or planarization.

The touch display device 100 further includes an active device, a gate line, a data line 134, a second electrode 140, and a third electrode 160. The active device may be a thin film transistor having a gate, a drain and a source, and a gate. The electrical connection is electrically connected to the scan line, the source is electrically connected to the data line, and the drain is electrically connected to the third electrode 160. The active line is turned on or off by the scan line, and the data line 134 transmits the data signal to the third electrode 160, thereby controlling the angle at which the display element layer 150 rotates. In this embodiment, the second electrode 140 is a common electrode, and the third electrode 160 is a pixel electrode, so that the data line 134 is electrically connected to the third electrode 160, and the common voltage is transmitted to the second electrode 140. However, the present invention is not limited thereto. In another modification, the second electrode 140 may also be a pixel electrode, and the third electrode 160 is a common electrode.

In the embodiment of FIG. 2, the touch display device 100 further has an insulating layer 132 and a protective layer 136, wherein the insulating layer 132 is located between the second substrate 130 and the third electrode layer 160, and the protective layer 136 is second. The electrode 140 is between the third electrode layer 160. The insulating layer 132 may be a gate insulating layer of the active device. For example, the insulating layer 132 is an inorganic insulating material such as tantalum oxide, tantalum nitride or hafnium oxynitride, or an organic insulating material, but is not limited thereto. The protective layer 136 may be an inorganic insulating material (such as tantalum oxide, tantalum nitride, niobium oxynitride, or other suitable insulating material), an organic insulating material (such as colorless/colored resist, polyamidamine, polyester, benzo) Benzene cyclobutene (BCB), polymethylmethacrylate (PMMA), poly(4-vinylphenol, PVP), polyvinyl alcohol (PVA), polytetrafluoroethylene (PTFE) Polytetrafluoroethene (PTFE), or other suitable insulating material), or other suitable insulating materials, but not limited to this. In the embodiment of FIG. 2, the insulating layer 132 and the protective layer 136 are both single-layer structures, but the invention is not limited thereto. The insulating layer 132 or the protective layer 136 may also have a multi-layer structure according to different design and process requirements. .

In the embodiment, the data line 134 and the third electrode 160 are staggered on the insulating layer 132. In detail, the data line 134 is composed of a metal material, and other conductive materials such as an alloy, a nitride of a metal material, an oxide of a metal material, an oxynitride of a metal material, or a metal material and other conductive materials may be used. A stack of layers of material. The third electrode 160 is also made of a metal material, and may be a transparent conductive material such as indium tin oxide (ITO) or indium zinc oxide (IZO). In the present embodiment, the data line 134 and the third electrode 160 are patterned by using different masks. However, in another modification, the data line 134 and the third electrode 160 may be formed by using the same mask. Similarly, the second electrode 140 is made of a metal material, and may be a transparent conductive material such as indium tin oxide (ITO) or indium zinc oxide (IZO).

Referring to FIG. 2 , in the touch display device 100 , a plurality of first slits 126 are formed on the first electrode 120 , and a plurality of second slits 146 are formed on the second electrode 140 , and the first slits 126 and the second The slits 146 are alternately arranged. In other words, the first slit 126 overlaps with the vertical projection area of the second electrode 140 on the second substrate 130, and the second slit 146 is also perpendicular to the vertical projection area of the first electrode 120 on the second substrate 130. There are overlaps.

In the touch display device 100, the first substrate 110 and the second substrate 130 can simultaneously define a plurality of pixel regions, and FIG. 3(a), FIG. 3(b) and FIG. 3(c) are respectively in a single pixel region. A top view of the first electrode, the second electrode, and the third electrode, and each of the pixel regions is composed of each layer structure of the above content, and details are not described herein. Specifically, as shown in FIG. 3( a ), the first electrode 120 has a plurality of first strip structures 122 and a first surrounding structure 124 , and the plurality of first strip structures 122 are respectively connected to the first surrounding structure 124 . . In the present embodiment, the first surrounding structure 124 is a closed structure. For example, the first surrounding structure 124 can be similar to a lip shape. The plurality of first strip structures 122 are of the same shape and are arranged in the first surrounding structure 124 in sequence. In other words, the plurality of first strip structures 122 respectively have two ends, and the two ends are respectively connected to the first circumference structure 124, and there is a gap between the two adjacent first strip structures 122, so that the first gap 126 is formed between two adjacent first strip structures 122. At the same time, a gap exists between the outermost first strip structure 122 of the plurality of first strip structures 122 and the first circumferential structure 124, so that the first slit 126 is also formed in the first strip structure 122 and Between a circumferential structure 124. Similarly, referring to FIG. 3(b), the second electrode 140 has a plurality of second strip structures 142 and a second surrounding structure 144, and the plurality of second strip structures 142 are respectively connected to the second surrounding structure 144, and A plurality of second slits 146 are respectively formed between the two adjacent second strip structures 142 and the second strip structures 142 and the second surrounding structure 144.

Referring to FIG. 2, FIG. 3(a) and FIG. 3(b), the plurality of first slits 126 respectively correspond to the second strip structure 142 when viewed in a direction perpendicular to the second substrate 130. The plurality of second slits 146 are respectively corresponding to the first strip structure 122 such that the first slit 126 and the second slit 146 are staggered, and the first strip structure 122 and the second strip structure 142 are also For staggered settings. Therefore, the shapes of the first electrode 120 and the second electrode 140 are complementary structures, in other words, the first slit 126 between the adjacent first strip structures 122 may correspond to the second strip structure of one of the two strips. 142, and the second narrow 146 between the two adjacent second strip structures 142 may correspond to one of the first strip structures 122 such that when the first electrode 120 and the second electrode 140 overlap each other , a substantially complete single electrode shape can be formed.

Referring to FIG. 3(c), in the single pixel of the embodiment, the third electrode 160 has a complete single electrode shape, that is, no slit is formed in the third electrode 160. After the first electrode 120, the second electrode 140, and the third electrode 160 are overlapped with each other, the shape of the single electrode formed by the complementary first electrode 120 and the second electrode 140 is substantially the same as the shape of the third electrode 160. Referring to FIG. 3(d), FIG. 3(d) is a top view in which a first electrode, a second electrode and a third electrode overlap each other in a single pixel region. From FIG. 3(d), it can be understood that the first electrode 120 and the second electrode 140, which are complementary in shape, can shield the third electrode 160 of a complete shape. Referring again to the embodiment of FIG. 2, the first electrode 120 and the second electrode 140 are both connected to a common voltage such that the first electrode 120 and the second electrode 140 are at the same level to form a shielding metal layer. In detail, the first electrode 120 and the second electrode 140 which are complementary in shape are overlaid on the third electrode 160, and the first electrode 120 and the second electrode are complementary in shape on the vertical projection of the second substrate 130. The area formed by the electrode 140 overlaps the third electrode 160. Therefore, the first electrode 120 and the second electrode 140 can completely block the noise from the touch structure 116 affected by the third electrode 160, thereby improving the sensitivity of the touch. In addition, the first surrounding structure of the first electrode 120 also covers the gate line 138 such that the first electrode 120 is located between the gate line 138 and the touch structure (not shown). Similarly, the second surrounding structure of the second electrode 140 also covers the data line 134 such that the second electrode 140 is located between the data line 134 and the touch structure (not shown). Therefore, the first electrode 120 can block the noise generated from the gate line 138, and the second electrode 140 can block the noise generated from the data line 134, so that the sensitivity of the touch sensing can be improved. In addition, referring to FIG. 2 , the patterned first electrode 120 can reduce the overlapping area between the first electrode 120 and the touch structure 116 , thereby making the resistance and capacitance between the first electrode 120 and the touch structure 116 . The load (RC Loading) drops, accelerating the charge and discharge speed of the two electrodes.

In the present embodiment, the display element layer 150 may be a negative liquid crystal molecule to avoid light leakage problems. The display element layer 150 is interposed between the first electrode 120 and the second electrode 140 having complementary shapes. In detail, when the liquid crystal molecules are located adjacent to each other and the first strip structure 122 and the second strip structure 142 are staggered. Between the two, liquid crystal molecules may be disorderly arranged to cause local light leakage or partial dark state. Therefore, when a negative-type liquid crystal molecule is used as a display medium, a case where dark lines or bright lines are generated can be avoided.

Please refer to FIG. 4(a), FIG. 4(b) and FIG. 4(c), and FIG. 4(a), FIG. 4(b) and FIG. 4(c) are respectively the first electrode and the second electrode of different embodiments. Partial side view. The width of the first strip structure 122 of the first electrode 120 is W1, and the width of the second strip structure 142 of the second electrode 140 is W2, and the width W1 and the width W2 are the first strip structure and the second strip, respectively. The length of the structure in the direction of arrangement is calculated. Similarly, the gap between the two adjacent first strip structures 122 is S1 (ie, the width of the first slit), and the gap between the two adjacent second strip structures 142 is S2 (ie, The width of the second slit). In the embodiment of FIG. 4(a), the gap S1 is equal to the width W2, and the gap S2 is equal to the width W1, so that the first electrode 120 and the second electrode 140, which are complementary in shape, can shield the interference from the third electrode 160. The overlapping area of the first electrode 120 and the touch structure in the vertical direction can be avoided to reduce the resistance and capacitance load. In the embodiment of FIG. 4(b), the gap S1 is greater than the width W2, and the gap S2 is greater than the width W1 such that the first strip structure 122 of the first electrode 120 and the second strip structure 142 of the second electrode 140 are perpendicular. There is no overlapping area in the direction. In the embodiment of FIG. 4(c), the gap S1 is smaller than the width W2, and the gap S2 is smaller than the width W1. Although the first strip structure 122 and the second strip structure 142 have a slight overlap area in the vertical direction, A better shielding interference effect can be achieved.

Referring to FIG. 5(a) and FIG. 5(b), FIG. 5(a) and FIG. 5(b) are respectively top views of the first electrode and the second electrode of another embodiment. The first electrode 220a of the embodiment has a plurality of first strip structures 222a and first surrounding structures 224a, and a plurality of first strip structures 222a are respectively connected to the first surrounding structures 224a. Compared with the above embodiment, the first surrounding structure 224a of the embodiment is a closed shape similar to a Japanese shape, and the plurality of first strip structures 222a are arranged in a two-row structure, as shown in FIG. 5(a). . Similarly, a plurality of first slits 226a are formed between the two adjacent first strip-like structures 222a and are simultaneously formed between the first strip-like structure 222a and the first surrounding structure 224a. Referring to FIG. 5(b), FIG. 5(b) is a top view of the second electrode, and FIG. 5(a) and FIG. 5(b) are respectively a first electrode 220a and a second electrode 240 having complementary shapes. Compared with the above embodiment, the second surrounding structure 244 of the present embodiment is a closed shape similar to a Japanese shape, and the plurality of second strip structures 242 are arranged in a two-row structure and are respectively connected to the second surrounding structure. 244. Similarly, a plurality of second slits 246 are formed between the two adjacent second strip structures 242 and simultaneously formed between the second strip structure 242 and the second surrounding structure 244. As shown in FIGS. 5(a) and 5(b), the shapes of the first electrode 220a and the second electrode 240 are complementary to each other. Specifically, when the first electrode 220a and the second electrode 240 overlap each other, the plurality of first slits 226a may respectively correspond to the second strip structure 242 or the second surrounding structure 244, and the plurality of second slits respectively 246 may correspond to the first strip structure 222a or the first surrounding structure 224a, respectively. In this way, when the first electrode 220a and the second electrode 240 are vertically projected on the second substrate, the first strip structure 222a may be located at two adjacent two strip structures 242, such that the first strip structure 222a and The second strip structures 242 can be staggered such that the first electrodes 220a and the second electrodes 240 are superposed to form a complete shape. In this embodiment, the complete shape of the first electrode 220a and the second electrode 240, which are complementary in shape, can shield the noise of the touch structure affected by the third electrode of the complete shape, and can also reduce the touch. The overlap between the structures reduces the RC loading.

Please refer to FIG. 5(c). FIG. 5(c) is a top view of the first electrode of another embodiment, and FIG. 5(b) and FIG. 5(c) are respectively complementary second electrodes 240 and The first electrode 220b. Compared with the first electrode 220a of FIG. 5(a), the first surrounding structure 224b of the first electrode 220b of the embodiment is a closed shape similar to a square shape, and the plurality of first strip structures 222b are arranged in a single row. The structure is connected to the first surrounding structure 224b, respectively. Similarly, as shown in FIG. 5(c) and FIG. 5(b), the shapes of the first electrode 220b and the second electrode 240 are complementary to each other. Specifically, when the first electrode 220b and the second electrode 240 overlap each other, the plurality of first slits 226b may respectively correspond to the second strip structure 242 or the second surrounding structure 244, and the plurality of second slits 246 may correspond to first strip structure 222b or first perimeter structure 224b, respectively. In this way, when the first electrode 220b and the second electrode 240 are perpendicularly projected on the second substrate, the first strip structure 222b may be located at two adjacent two strip structures 242 such that the first strip structure 222b and The second strip structures 242 can be staggered such that the first electrodes 220b and the second electrodes 240 are superposed to form a complete shape. In the embodiment, the first surrounding structure 224b of the first electrode 220b is similar to a zigzag shape, and the second surrounding structure 242 of the second electrode 240 is similar to a mouth shape. Therefore, when the first electrode 220b and the second electrode 240 are stacked After the combination, the overlap area of the two electrodes in the vertical direction will be less. In the embodiment of FIG. 5(a) and FIG. 5(b), the widths of the plurality of first slits 226a may be the same or different according to different requirements and designs, and similarly, the plurality of second slits. The width of 246 may also be the same or different. Meanwhile, the width relationship between the first strip structure 222a, the second strip structure 242, the first slit 226a and the second slit 246 can also refer to FIG. 4(a), FIG. 4(b) and FIG. 4 ( c) The design and composition are not described here. Similarly, in the embodiment of FIGS. 5(b) and 5(c), the width relationship between the first strip structure 222a, the second strip structure 242, the first slit 226b and the second slit 246 It can also be the same, different or various combinations due to different designs and needs.

The touch display device according to the above embodiment improves the touch sensitivity by shielding the noise by the first electrode and the second electrode having complementary shapes. In addition, the patterned first electrode can reduce the overlapping area with the touch structure in the vertical direction, thereby reducing the resistance and capacitance load.

While the present invention has been described above in terms of the preferred embodiments thereof, it is not intended to limit the invention, and the invention may be modified and modified without departing from the spirit and scope of the invention. The patent protection scope of the invention is subject to the definition of the scope of the patent application attached to the specification.

1, 100‧‧‧ touch display device

10, 110‧‧‧ first substrate

12, 112‧‧‧ shading structure

14, 114‧‧‧ color filter layer

16, 116‧‧‧ touch structure

18, 118‧‧‧ flat layer

20, 130‧‧‧ second substrate

22‧‧‧Active component layer

30, 150‧‧‧ display component layer

40‧‧‧Support column

120, 220a, 220b‧‧‧ first electrode

122, 222a, 222b‧‧‧ first strip structure

124, 224a, 224b‧‧‧ first surrounding structure

126, 226a, 226b‧‧‧ first slit

132‧‧‧Insulation

134‧‧‧Information line

136‧‧‧protection layer

138‧‧‧ gate line

140, 240‧‧‧ second electrode

142, 242‧‧‧Second strip structure

144, 244‧‧‧Second surrounding structure

146, 246‧‧‧ second slit

160‧‧‧ third electrode

1 is a side view of a conventional touch display device. 2 is a side view of a touch display device according to an embodiment of the present invention. 3(a) is a top view of a first electrode of a touch display device according to an embodiment of the present invention. 3(b) is a top view of a second electrode of the touch display device according to an embodiment of the present invention. 3(c) is a top view of a third electrode of the touch display device according to an embodiment of the present invention. 3(d) is a top view of the first electrode, the second electrode, and the third electrode of the touch display device according to an embodiment of the present invention. 4(a) is a partial side elevational view showing a first electrode and a second electrode of a touch display device according to an embodiment of the present invention. 4(b) is a partial side elevational view showing the first electrode and the second electrode of the touch display device according to another embodiment of the present invention. 4(c) is a partial side elevational view showing the first electrode and the second electrode of the touch display device according to another embodiment of the present invention. FIG. 5(a) is a top view of a first electrode of a touch display device according to another embodiment of the present invention. FIG. 5(b) is a top view of a second electrode of the touch display device according to another embodiment of the present invention. FIG. 5(c) is a top view of a first electrode of the touch display device according to another embodiment of the present invention.

100‧‧‧Touch display device

110‧‧‧First substrate

112‧‧‧ shading structure

114‧‧‧Color filter layer

116‧‧‧ touch structure

118‧‧‧flat layer

120‧‧‧first electrode

126‧‧‧first slit

130‧‧‧second substrate

132‧‧‧Insulation

134‧‧‧Information line

136‧‧‧protection layer

140‧‧‧second electrode

146‧‧‧Second slit

150‧‧‧Display component layer

160‧‧‧ third electrode

Claims (9)

A touch display device includes: a first substrate; a second substrate; a first electrode disposed on the first substrate; a plurality of first slits formed on the first electrode; a color filter layer And disposed on the first substrate and located between the first electrode and the first substrate; a second electrode disposed on the second substrate; a plurality of second slits formed on the second electrode; a third electrode is disposed on the second substrate; a flat layer is disposed on the first substrate and located between the color filter layer and the first electrode; a display element layer is disposed on the first substrate and Between the second substrate; an insulating layer disposed on the second substrate between the third electrode and the second substrate; and a protective layer disposed on the second substrate and located at the second electrode And the third electrode; wherein the first slits overlap with the vertical projection area of the second electrode on the second substrate, and the second slits are respectively associated with the first electrode The vertical projection areas of the second substrate overlap. The touch display device of claim 1, further comprising a light shielding structure and a touch structure, wherein the light shielding structure is disposed on the first substrate, and the light shielding structure and the color filter layer are mutually Adjacent, the touch structure is located in the light shielding structure. A touch display device includes: a first substrate; and a second substrate, wherein the first substrate and the second substrate can simultaneously define a plurality of pixel regions, and the pixel regions respectively include: a color filter a light sheet disposed on the first substrate; a light shielding structure disposed on the first substrate, wherein the light shielding structure is located around the color filter; a first electrode disposed on the first substrate, and the first electrode Having a plurality of first strip structures and a first surrounding structure, wherein the first strip structures are respectively connected to the first surrounding structure; a plurality of first slits are formed in the first strip structures Between the first strips and the first surrounding structure; a second electrode disposed on the second substrate, and the second electrode has a plurality of second strip structures and a second peripheral structure, and The second strip structures are respectively connected to the second surrounding structure; a plurality of second slits are formed between the second strip structures or between the second strips and the second surrounding structures ;as well as The third electrode is disposed on the second substrate, wherein the first slit structures respectively correspond to the second strip structures, and the second slit structures respectively correspond to the first strip structures The first electrode and the second electrode are complementary in shape. The touch display device of claim 3, wherein the third electrode is in a complete shape. The touch display device of claim 3, wherein the vertical projection of the first electrode and the second electrode on the second substrate is substantially the same as the shape of the third electrode on the second substrate The vertical projection has the same shape. The touch display device of claim 3, wherein an area formed by the vertical projection of the first electrode and the second electrode on the second substrate overlaps the third electrode. A touch display device includes: a first substrate; and a second substrate, wherein the first substrate and the second substrate can simultaneously define a plurality of pixel regions, and the pixel regions respectively include: a color filter a light sheet disposed on the first substrate; a light shielding structure disposed on the first substrate, wherein the light shielding structure is located around the color filter; a first electrode disposed on the first substrate, and the first electrode Having a plurality of first strip structures; a second electrode disposed on the second substrate; and the second electrode having a plurality of second strip structures; A third electrode is disposed on the second substrate, wherein the first strip structures are respectively located between two adjacent two strip structures. The touch display device of claim 7, wherein the first electrode further has a first surrounding structure, and the first strip structures are respectively connected to the first surrounding structure, and the second electrode is further There is a second surrounding structure, and the second strip structures are respectively connected to the second surrounding structure. The touch display device of claim 7, further comprising a plurality of first slits and a plurality of second slits, wherein the first slits are respectively formed adjacent to each other Between the strip structures, the second slits are respectively formed between the two second strip structures adjacent to each other.