TWI405019B - Touch display device - Google Patents

Abstract

A display apparatus and a touch display device are provided. The display apparatus includes a first substrate, a first conductive layer, a second substrate, a second conductive layer, an accommodating space disposed between the first conductive layer and the second conductive layer, and a plurality of charged particles. The first conductive layer has anisotropic impedance and is disposed on the first substrate. The second conductive layer is disposed on the second substrate. The accommodating space includes a plurality of pixel spaces. The charged particles are filled in the pixel spaces.

Description

Touch display device

The invention relates to a display device and a touch display device.

Common electronic paper display technologies include electrophoresis, electronic powder, charged polymer particles, cholesterol liquid crystal, and electrowetting technology.

Specifically, the electronic paper includes a front plane laminate (FPL), a transistor array substrate, and a display array sandwiched between the front panel and the transistor array substrate. Wherein, the electrophoretic electronic paper display technology is taken as an example, the display array is composed of a plurality of arrays of microcapsules, and each microcapsule comprises a black liquid and white charged particles. When the electric field between the pixel electrodes of the transistor array substrate and the common electrode layer changes, the white charged particles move upward (close to the reader direction) or downward according to the direction of the electric field, thereby causing each pixel to appear. White or black for the purpose of display.

With the maturity of technology, e-paper has attracted the attention of many manufacturers, and many large companies have joined the ranks of R&D. In the future, the market demand for electronic paper is getting higher and higher. Therefore, how to make electronic paper with more gray scale display is a very important topic in this field.

The invention provides a display device which has more display gray scales and better reliability.

The invention further provides a touch display device, which has more display gray scales and better reliability.

The present invention provides a display device including a first substrate, a first conductive layer, a second substrate, a second conductive layer, a receiving unit, and a plurality of charged particles. The first conductive layer has an impedance anisotropy and is disposed on the first substrate. The second conductive layer is disposed on the second substrate. The accommodating unit is disposed between the first conductive layer and the second conductive layer, and includes a plurality of pixel spaces. A plurality of charged particles are filled in the pixel space.

In an embodiment of the invention, the first conductive layer is a carbon nanotube film.

In an embodiment of the present invention, the first conductive layer includes a plurality of conductive blocks disposed apart from each other, respectively disposed above the pixel space, each conductive block having a main conductive direction, and each conductive block A plurality of electrodes are connected to one side, and the electrodes are arranged in a direction substantially perpendicular to the main conduction direction.

In an embodiment of the invention, the second conductive layer has an impedance anisotropy.

In an embodiment of the invention, the second conductive layer is a carbon nanotube film.

In an embodiment of the present invention, the second conductive layer includes a plurality of conductive blocks disposed apart from each other, respectively disposed under the pixel space, each conductive block having a main conductive direction, and each conductive block One side is connected to a plurality of electrodes, this The electrodes are arranged in a direction substantially perpendicular to the main conduction direction.

In an embodiment of the invention, the first substrate and the second substrate are flexible substrates.

In an embodiment of the invention, the charged particles in each of the pixel spaces are positively or negatively charged, or some of the charged particles in each pixel space are positively charged, and another part of the charged particles are charged. Negative.

In an embodiment of the invention, the color of the charged particles includes at least one of white charged particles, black charged particles, and colored charged particles.

In an embodiment of the invention, a dielectric solvent is further included, which is filled in the pixel space.

In one embodiment of the invention, the dielectric solvent is colorless, black or white.

In an embodiment of the invention, the accommodating unit includes a partition wall portion disposed between any two adjacent pixel spaces to separate the pixel space.

In an embodiment of the invention, a plurality of color filter units are further disposed on the first substrate and located above the pixel space.

In an embodiment of the invention, a driving unit is further electrically connected to the first conductive layer and the second conductive layer, wherein the driving unit is adapted to transmit the signal to the corresponding picture via the first conductive layer and the second conductive layer. The opposite sides of the prime space are used to drive the charged particles in the pixel space for display.

In an embodiment of the invention, a backlight module is further included, wherein the second substrate The first substrate and the backlight module are disposed.

In an embodiment of the present invention, the touch panel is disposed on the first substrate, wherein the first substrate is located between the touch panel and the second substrate, and the touch panel includes a third substrate and is disposed in the third a third conductive layer on the substrate, a fourth substrate disposed opposite the third substrate, and a fourth conductive layer disposed on the fourth substrate.

In an embodiment of the invention, the third conductive layer and the fourth conductive layer have impedance anisotropy.

In an embodiment of the invention, the third conductive layer and the fourth conductive layer are both carbon nanotube films.

The present invention further provides a touch display device including a flexible display panel and a touch panel. The touch panel is disposed on the flexible display panel and includes a third substrate, a third conductive layer, a fourth substrate, and a fourth conductive layer. The third conductive layer is disposed on the third substrate and has impedance anisotropy. The fourth substrate is disposed opposite to the third substrate. The fourth conductive layer is disposed on the fourth substrate.

In an embodiment of the invention, the third conductive layer comprises a carbon nanotube film.

In an embodiment of the invention, the fourth conductive layer has an impedance anisotropy.

In an embodiment of the invention, the fourth conductive layer comprises a carbon nanotube film.

In an embodiment of the invention, the flexible display panel comprises a first a substrate, a first conductive layer, a second substrate, a second conductive layer, a receiving unit, and a plurality of charged particles. The first conductive layer has an impedance anisotropy and is disposed on the first substrate. The second conductive layer is disposed on the second substrate. The accommodating unit is disposed between the first conductive layer and the second conductive layer, and includes a plurality of pixel spaces. A plurality of charged particles are filled in the pixel space.

In an embodiment of the invention, the flexible display panel further includes a dielectric solvent filled in the pixel space.

Based on the above, the display device of the present invention and the touch display device are provided with a conductive layer having anisotropy of impedance. Therefore, in the display device, each pixel space can be controlled by applying different voltages or selectively applying or not applying voltages to respective portions of the conductive layer having impedance anisotropy corresponding to each pixel space. Display, so that the display device has more grayscale display. On the other hand, in the touch display device, the touch panel includes a conductive layer having an impedance anisotropy, so that the touch panel has good positioning accuracy, so that problems such as misjudgment of the touch signal can be avoided, so as to provide better Touch and display quality.

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

[First Embodiment]

1 is a schematic cross-sectional view of a display device according to a first embodiment of the present invention, and FIG. 2 is a top view of the first conductive layer of FIG.

Referring to FIG. 1 , the display device 100 includes a first substrate 110 , a first conductive layer 112 , a second substrate 120 , a second conductive layer 122 , a receiving unit 130 , a dielectric solvent 136 , and a plurality of charged particles. 134. The first conductive layer 112 has an impedance anisotropy and is disposed on the first substrate 110 . The second conductive layer 122 is disposed on the second substrate 120. The accommodating unit 130 is disposed between the first conductive layer 112 and the second conductive layer 122 and includes a plurality of pixel spaces 132. The dielectric solvent 136 is filled in the pixel space 132. A plurality of charged particles 134 are filled in the pixel space 132. In the embodiment, the display device 100 further includes a driving unit 150 electrically connected to the first conductive layer 112 and the second conductive layer 122.

Referring to FIG. 1 and FIG. 2 simultaneously, in the embodiment, the first substrate 110 is, for example, a transparent substrate, and the first substrate 110 and the second substrate 120 are, for example, flexible substrates. However, in other embodiments, the first substrate and the second substrate may also be rigid substrates. The first conductive layer 112 is, for example, a carbon nanotube film having impedance anisotropy and flexibility. The first conductive layer 112 includes a plurality of conductive blocks 112a disposed apart from each other, respectively disposed above the pixel space 132. Each conductive block 112a has a main conductive direction 116, and one side of each conductive block 112a is connected A plurality of electrodes 114 are arranged in a direction substantially perpendicular to the main conductive direction 116. In particular, in the present embodiment, the main conductive direction 116 is the direction in which the impedance of the conductive block 112a is the smallest, and it is perpendicular to the direction in which the impedance of the conductive block 112a is the largest. Specifically, each conductive block 112a has a plurality of carbon nanotubes extending substantially along the main conductive direction 116, and the carbon nanotubes have The characteristic is that the impedance is small in the extending direction and the impedance is large in the radial direction. However, in other embodiments, other nano-units with impedance anisotropy may be used instead of the carbon nanotubes. The second conductive layer 122 is, for example, a light-transmitting conductive layer or an opaque conductive layer, and is preferably a flexible metal film.

Referring to FIG. 1 , the accommodating unit 130 includes a pixel space 132 , a partition wall portion 138 , a first insulating portion 140 , and a second insulating portion 142 . The partition wall portion 138 is disposed between any two adjacent pixel spaces 132 to separate the pixel space 132. The first insulating portion 140 is disposed between the pixel space 132 and the first conductive layer 112 to insulate the pixel space 132 from the first conductive layer 112, and the second insulating portion 142 is disposed in the pixel space 132 and the second conductive layer. Between 122, the pixel space 132 is insulated from the second conductive layer 122. The partition wall portion 138, the first insulating portion 140, and the second insulating portion 142 may be integrally formed to be connected to each other, or may be individual members.

The pixel space 132 is filled with charged particles 134 and a dielectric solvent 136. The charged particles 134 are dispersed in the dielectric solvent 136 and are movable in the dielectric solvent 136. In the present embodiment, the charged particles 134 include positively charged white charged particles 134w and negatively charged black charged particles 134b, and the dielectric solvent 136 is, for example, a colorless liquid. The dielectric solvent 136 can be a solvent or solvent mixture selected from the group consisting of hydrocarbons, alkyl ketones, alkyl esters, alcohols, ethers, water, and mixtures thereof, and in other embodiments. The color of the dielectric solvent 136 may also be black, white or other colors. Furthermore, in another embodiment In the middle, it can also be a white charged particle electro-negative, while a black charged particle is positively charged. Alternatively, in another embodiment, the charged particles 134 may be colored charged particles other than black and white, such as at least one of red charged particles, green charged particles, and blue charged particles, so that no additional is needed in the display device. Configure the color filter unit. In addition, in this embodiment, a portion of the charged particles 134w are positively charged, and another portion of the charged particles 134b are negatively charged. However, in other embodiments, the charged particles 134 may also be all positively charged. Or all negatively charged.

As shown in FIG. 1 , the driving unit 150 transmits signals to the opposite sides of the corresponding pixel space 132 via the first conductive layer 112 and the second conductive layer 122 to generate a voltage difference on opposite sides of the pixel space 132 . In this way, the white charged particles 134w and the black charged particles 134b can move above or below the pixel space 132 according to the voltage difference between the opposite sides of the pixel space 132 to achieve the effect of displaying the picture. In detail, in the present embodiment, the first conductive layer 112 has impedance anisotropy and includes a plurality of conductive blocks 112a, so by applying different voltages to each conductive block 112a, or selectively applying Alternatively, no voltage is applied to different portions of each of the conductive blocks 112a to cause respective voltage differences on opposite sides of each pixel space 132, thereby causing each pixel space 132 to have a different gray scale display. For example, as shown by the rightmost conductive block 112a in FIG. 1, since a plurality of electrodes 114 are connected to one side of each conductive block 112a, a different voltage is applied to each of the electrodes 114, or By selectively applying or not applying a voltage, a plurality of different sides can be generated on opposite sides of the same pixel space 132. The voltage difference, in turn, causes the single pixel space 132 to have more grayscale display.

It is particularly noted that in the present embodiment, an electrophoretic display device having a dielectric solvent 136 is taken as an example, but in another embodiment, the display device 100 may also be a powder display device, in other words, a gas or air. Instead of the dielectric solvent 136 in the pixel space 132, the charged particles 134 in the powder state are moved in gas or air for display.

In the present embodiment, since the first conductive layer 112 has impedance anisotropy, the display of each pixel space 132 can be controlled by applying different voltages to the first conductive layer 112 corresponding to each pixel space 132. The display device 100 is made to have more gray scale display. In addition, in the embodiment, a carbon nanotube film is used as the first conductive layer 112, and the carbon nanotube film not only has impedance anisotropy, but is bendable compared to general indium tin oxide or other transparent conductive material. It has a large curvature without breaking, and has the advantages of better resistance to repeated bending and low cost. Therefore, the display device 100 is manufactured to have flexible characteristics for convenient storage and carrying, and has better reliability and lower manufacturing cost.

[Second embodiment]

3 is a schematic cross-sectional view of a display device according to a second embodiment of the present invention, and FIG. 4 is a top view of the second conductive layer of FIG.

Referring to FIG. 3 and FIG. 4 simultaneously, in the present embodiment, the structure and display manner of the display device 100a are substantially the same as those of the display device 100 described in the first embodiment, and the main difference is the first in the display device 100a. Conductive layer 112 and Both conductive layers 122 have impedance anisotropy. In the present embodiment, the second conductive layer 122 is, for example, a carbon nanotube film. The second conductive layer 122 includes a plurality of conductive blocks 122a disposed apart from each other, respectively disposed under the pixel space 132. Each conductive block 122a has a main conductive direction 126, and one side of each conductive block 122a is connected A plurality of electrodes 124 are arranged in a direction substantially perpendicular to the main conductive direction 126.

Therefore, in the present embodiment, different voltages can be applied to each of the electrodes 114, 124, or a voltage can be selectively applied or not, so that different sides of the same pixel space 132 can be produced in different ways. The voltage difference, in turn, causes the single pixel space 132 to have more grayscale display.

In this embodiment, since the first conductive layer 112 and the second conductive layer 122 of the display device 100a both have impedance anisotropy, it is easier to adjust the display of the display device 100a to have more gray scale display. . In addition, in the present embodiment, the carbon nanotube film is used as the first conductive layer 112 and the second conductive layer 122. Therefore, the manufactured display device 100a has better flexibility characteristics, reliability, and lower manufacturing. cost.

[Third embodiment]

Figure 5 is a cross-sectional view showing a display device in accordance with a third embodiment of the present invention.

Referring to FIG. 5, in the embodiment, the structure and display manner of the display device 100b are substantially the same as those of the display device 100 described in the first embodiment. The main difference is that the display device 100b further includes a plurality of color filter units. 118. color The color filter unit 118 is disposed between the first substrate 110 and the first conductive layer 112 and is located above the pixel space 132, respectively. The color filter unit 118 is, for example, a red filter film, a green filter film, or a blue filter film. As a result, even if the charged particles 134 include only the positively charged white charged particles 134w and the negatively charged black charged particles 134b or one of them, the display device 100b can perform full color display.

Fourth Embodiment

FIG. 6 is a cross-sectional view of a touch display device according to a fourth embodiment of the present invention, and FIG. 7 is a schematic view of the third substrate 210 and the fourth substrate 220 of the touch panel of FIG.

Referring to FIG. 6 , the touch display device 300 includes a flexible display panel 101 , a touch panel 200 , an adhesion layer 240 , and a driving unit 150 , 151 . The touch panel 200 is attached to the flexible display panel 101 by, for example, an adhesive layer 240. The driving unit 151 is electrically connected to the third conductive layer 212 and the fourth conductive layer 222 in the touch panel 200 , and the driving unit 150 is electrically connected to the first conductive layer 112 and the second conductive layer 122 in the flexible display panel 101 . Moreover, the driving unit 150 is electrically connected to the driving unit 151.

In this embodiment, the flexible display panel 101 is, for example, an electrophoretic display device, including a first substrate 110, a first conductive layer 112, a second substrate 120, a second conductive layer 122, and a receiving device. Unit 130, a dielectric solvent 136, and a plurality of charged particles 134. The first conductive layer 112 is disposed on the first substrate 110 The material is, for example, indium tin oxide or other transparent material. The second conductive layer 122 is disposed on the second substrate 120 and includes a plurality of conductive blocks 122a disposed apart from each other, and disposed under the pixel space 132, respectively. The conductive block 122a is, for example, a metal electrode. The accommodating unit 130 is disposed between the first conductive layer 112 and the second conductive layer 122 and includes a plurality of pixel spaces 132. The pixel space 132 is filled with a plurality of charged particles 134 and a dielectric solvent 136. In the present embodiment, the charged particles 134 are, for example, negatively charged white charged particles, the color of the dielectric solvent 136 is, for example, black, and the charged particles 134 can move in the dielectric solvent 136. In detail, the driving unit 150 transmits signals to the opposite sides of the corresponding pixel space 132 via the first conductive layer 112 and the second conductive layer 122 to generate a voltage difference on opposite sides of the pixel space 132. In this way, the charged particles 134 can move above or below the pixel space 132 according to the voltage difference between the opposite sides of the pixel space 132 to achieve the effect of displaying the picture. In particular, although the electrophoretic display device is used as the flexible display panel 101 as an example in the embodiment, the flexible display panel 101 may be any known flexible display panel, for example. The flexible display panel 101 can be a powder type display device, in other words, the dielectric solvent 136 in the pixel space 132 is replaced by gas or air, and the charged particles 134 in the powder state are moved in gas or air for display. .

Referring to FIG. 6 and FIG. 7 , the touch panel 200 includes a third substrate 210 , a third conductive layer 212 , a fourth substrate 220 , and a fourth conductive layer 222 . The third conductive layer 212 is disposed on the third substrate 210 and has impedance anisotropy. The fourth substrate 220 is disposed opposite to the third substrate 210. The fourth conductive layer 222 is disposed on the fourth substrate 220. In this embodiment, the touch panel 200 is, for example, a resistive touch panel. Therefore, the touch panel 200 further includes a plurality of spacers 230 disposed between the third conductive layer 212 and the fourth conductive layer 222 . It is to be noted that, in the embodiment, the third substrate 210 is the upper substrate and the fourth substrate 220 is the lower substrate. However, in other embodiments of the present invention, the third substrate 210 may also serve as the lower substrate. The fourth substrate 220 may also serve as an upper substrate, that is, the third conductive layer 212 having impedance anisotropy may be disposed on the upper substrate or the lower substrate.

In the embodiment, the third substrate 210 and the fourth substrate 220 are, for example, flexible substrates, and the fourth conductive layer 222 and the third conductive layer 212 have impedance anisotropy. The third conductive layer 212 and the fourth conductive layer 222 are, for example, carbon nanotube films having both impedance anisotropy and flexibility. The third conductive layer 212 has a main conductive direction 214, the fourth conductive layer 222 has a main conductive direction 224, and the main conductive direction 214 of the third conductive layer 212 is, for example, perpendicular to the main conductive direction 224 of the fourth conductive layer 222. In the present embodiment, one side of the third conductive layer 212 is provided with a plurality of electrodes 216 separated from each other, which are arranged in a direction substantially perpendicular to the main conductive direction 214. Further, one side of the fourth conductive layer 222 is provided with a plurality of electrodes 226 separated from each other, which are arranged in a direction substantially perpendicular to the main conductive direction 224.

In this embodiment, the touch display device 300 is a resistive touch display device. Therefore, when the user touches the touch panel 200, the third conductive layer 212 is associated with The fourth conductive layer 222 is in contact, and the voltage signal sensed by the electrode 216 and the electrode 226 is changed. Since the third conductive layer 212 and the fourth conductive layer 222 both have impedance anisotropy, and the main conductive direction 214 of the third conductive layer 212 is perpendicular to the main conductive direction 224 of the fourth conductive layer 222, the touch panel 200 can The position of the user's touch point is accurately located by the voltage changes sensed by the plurality of electrodes 216 and 226. In this way, the flexible display panel 101 can achieve the touch function according to the user's selection.

In this embodiment, the touch panel 200 has good positioning accuracy, so that problems such as misjudgment of the touch signal can be avoided, so as to provide better touch and enable the flexible display panel to display correctly according to the user's selection. . In addition, in the embodiment, the third substrate 210 and the fourth substrate 220 in the touch panel 200 have flexibility, and the third conductive layer 212 and the fourth conductive layer 222 include flexible nano carbon. The touch panel 200 can be combined with the flexible display panel 101 to form a touch display device 300 having flexible characteristics. In other words, the touch display device 300 has better touch and display quality and convenient storage and carrying characteristics, and conforms to the trend of demand for display devices on the market.

[Fifth Embodiment]

FIG. 8 is a cross-sectional view of a touch display device according to a fifth embodiment of the present invention, and FIG. 9 is a schematic view of the third substrate 210 and the fourth substrate 220 of the touch panel of FIG. In the present embodiment, the structure of the touch display device 300a is substantially the same as that of the display device 300 described in the fourth embodiment, and the main difference lies in The touch panel 200a is a capacitive touch panel, and only the main differences will be described below.

Referring to FIGS. 8 and 9 , the touch panel 200 a is attached to the flexible display panel 101 by, for example, an adhesive layer 240 . The touch panel 200a includes a third substrate 210, a third conductive layer 212, a fourth substrate 220, a fourth conductive layer 222, and an insulating layer 232. In the present embodiment, the third conductive layer 212 is disposed on the third substrate 210 and has impedance anisotropy, which includes, for example, a plurality of conductive blocks 212a disposed apart from each other. The conductive block 212a is, for example, a carbon nanotube film, and the conductive blocks 212a are arranged in parallel with each other and extend along their main conductive direction 214. The fourth conductive layer 222 is disposed on the fourth substrate 220 and has impedance anisotropy, which includes, for example, a plurality of conductive blocks 222a disposed apart from each other. The conductive block 222a is, for example, a carbon nanotube film, and the conductive blocks 222a are arranged in parallel with each other and extend along their main conductive direction 224. In addition, in the present embodiment, the arrangement direction of the conductive blocks 212a is, for example, perpendicular to the arrangement direction of the conductive blocks 222a, and thus the main conductive direction 214 of the conductive blocks 212a is, for example, perpendicular to the main conductive direction 224 of the conductive blocks 222a. . The insulating layer 232 is disposed between the third conductive layer 212 and the fourth conductive layer 222. It is to be noted that, in the embodiment, the third substrate 210 is the upper substrate and the fourth substrate 220 is the lower substrate. However, in other embodiments of the present invention, the third substrate 210 may also serve as the lower substrate. The fourth substrate 220 can also serve as an upper substrate.

In this embodiment, the touch display device 300a is a capacitive touch display device. Therefore, when the user touches the touch panel 200a, the third conductive layer 212 is The fourth conductive layer 222 senses a change in the capacitance value. Since the third conductive layer 212 and the fourth conductive layer 222 both have impedance anisotropy, and the main conductive direction 214 of the third conductive layer 212 is perpendicular to the main conductive direction 224 of the fourth conductive layer 222, the touch panel 200a can Accurately locate the user's touch point. In this way, the flexible display panel 101 can change the display screen according to the user's selection.

In this embodiment, the touch display device 300a has good positioning accuracy, so that problems such as misjudgment of the touch signal can be avoided, so as to provide better touch and make the flexible display panel correct according to the user's choice. display. In addition, in the embodiment, the third substrate 210 and the fourth substrate 220 in the touch panel 200a have flexibility, and the third conductive layer 212 and the fourth conductive layer 222 include flexible nano carbon. The touch panel 200a can be combined with the flexible display panel 101 to form a touch display device 300a having flexible characteristics. In other words, the touch display device 300a has better touch and display quality and convenient storage and carrying characteristics, and conforms to the trend of demand for display devices on the market.

[Sixth embodiment]

FIG. 10 is a cross-sectional view showing a touch display device according to a sixth embodiment of the present invention.

Referring to FIG. 10, in the present embodiment, the structure of the touch display device 300b is substantially the same as that of the touch display device 300 described in the fourth embodiment, and the main difference lies in the display described in the first embodiment. Device 100 as a flexible display surface The board, that is, the touch panel 200 is coupled to the display device 100. For the structure of the display device 100, the structure of the touch panel 200, and the combination of the two, reference may be made to the first embodiment and the fourth embodiment, and details are not described herein. Furthermore, in another embodiment, the touch panel 200a described in the fifth embodiment can be coupled to the display device 100 to form a capacitive touch display device (not shown). Reference is made to the fifth embodiment and the first embodiment, and details are not described herein. In addition, in another embodiment, a conventional touch panel (not shown) may be coupled to the display device 100 to form a touch display device (not shown). In other words, the structure of the touch panel is The structure of the touch panel 200 is similar, but the third conductive layer 212 and the fourth conductive layer 222 in the touch panel have no impedance anisotropy.

Since the touch display device 300b includes the display device 100 having a large gray scale display and the touch panel 200 having good positioning accuracy, the touch display device 300b has better touch and display quality. In addition, when the first conductive layer 112 in the display device 100 and the third conductive layer 212 and the fourth conductive layer 222 in the touch panel 200 are formed by using a carbon nanotube film, the touch display device 300b can be made good. Flexibility. Therefore, the touch display device 300b has flexible characteristics for convenient storage and carrying, better reliability, and low manufacturing cost.

[Seventh embodiment]

FIG. 11 is a cross-sectional view showing a touch display device according to a seventh embodiment of the present invention.

Referring to FIG. 11, in this embodiment, the backlight module 400 is disposed in the first The touch display device 300 is formed under the touch display device 300b described in the sixth embodiment. The backlight module 400 is, for example, an organic light emitting diode (OLED) having flexible characteristics. As a result, the touch display device 500 has a backlight, so that the display can be performed in an environment lacking a light source to improve the usability of the touch display device 500. In other embodiments, the organic light emitting diode can also be replaced by other flexible backlight modules.

[Eighth Embodiment]

Figure 12 is a schematic diagram of a display device in accordance with an eighth embodiment of the present invention.

Referring to FIG. 12, in the present embodiment, the structure of the display device 100c is substantially the same as that of the display device 100 described in the first embodiment, and the main difference is that the display device 100c further includes a reel 160. The drive unit 150 is disposed in the reel 160. In this way, the driving unit 150 disposed in the hard reel 160 can be better protected and has higher design flexibility, and at the same time, the display device 100c can be easily carried by the retracting method, and both The characteristics of a flexible display device. Of course, the reel 160 may be disposed in the other display devices 100a, 100b or the powder display device not shown, depending on the needs of the product. In this way, the display device not only has more gray scale display, but also facilitates storage or carrying, in order to comply with the market demand for display devices.

In the display device and the touch display device of the present invention, a conductive layer having impedance anisotropy is disposed. Therefore, in the display device, each of the conductive layers corresponding to the respective pixel spaces is applied by applying different voltages or selectively applying or not applying voltages. In part, the display of each pixel space can be controlled, so that the display device has more gray scale display. On the other hand, in the touch display device, the touch panel includes a conductive layer having an impedance anisotropy, so that the touch panel has good positioning accuracy, so that problems such as misjudgment of the touch signal can be avoided, so as to provide better Touch and display quality.

In addition, when a material having both impedance anisotropy and flexibility (such as a carbon nanotube film) is used as a conductive layer in a display device and a touch display device, the display device and the touch display device can be made good. Flexible characteristics. In this way, it is advantageous to store or carry the display device and the touch display device to conform to the trend of demand for the display device on the market.

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

100, 100a, 100b, 100c‧‧‧ display devices

101‧‧‧Flexible display panel

110, 120, 210, 220‧‧‧ substrates

112, 122, 212, 222‧‧‧ conductive layers

112a, 122a, 212a, 222a‧‧‧ conductive blocks

114, 124, 216, 226‧‧‧ electrodes

116, 126, 214, 224‧‧‧ main conductive direction

118‧‧‧Color Filter Unit

130‧‧‧ accommodating unit

132‧‧‧ pixel space

134, 134b, 134w‧‧‧ charged particles

136‧‧‧ dielectric solvent

138‧‧‧ partition wall

140, 142‧‧‧Insulation

150, 151‧‧‧ drive unit

160‧‧‧ reel

200, 200a‧‧‧ touch panel

230‧‧‧ spacers

232‧‧‧Insulation

240‧‧‧Adhesive layer

300, 300a, 300b, 500‧‧‧ touch display devices

400‧‧‧Backlight module

1 is a schematic cross-sectional view of a display device according to a first embodiment of the present invention, and FIG. 2 is a top view of the first conductive layer of FIG.

3 is a schematic cross-sectional view of a display device according to a second embodiment of the present invention, and FIG. 4 is a top view of the second conductive layer of FIG.

Figure 5 is a cross-sectional view showing a display device in accordance with a third embodiment of the present invention.

FIG. 6 is a cross-sectional view showing a touch display device according to a fourth embodiment of the present invention; FIG. 7 is a schematic diagram of a third substrate and a fourth substrate of the touch panel of FIG. 6.

8 is a schematic cross-sectional view of a touch display device according to a fifth embodiment of the present invention, and FIG. 9 is a schematic view of a third substrate and a fourth substrate of the touch panel of FIG.

FIG. 10 is a cross-sectional view showing a touch display device according to a sixth embodiment of the present invention.

FIG. 11 is a cross-sectional view showing a touch display device according to a seventh embodiment of the present invention.

Figure 12 is a schematic diagram of a display device in accordance with an eighth embodiment of the present invention.

100‧‧‧ display device

110, 120‧‧‧ substrate

112, 122‧‧‧ conductive layer

112a‧‧‧ conductive block

114‧‧‧Electrode

130‧‧‧ accommodating unit

132‧‧‧ pixel space

134, 134b, 134w‧‧‧ charged particles

136‧‧‧ dielectric solvent

138‧‧‧ partition wall

140, 142‧‧‧Insulation

150‧‧‧ drive unit

Claims (17)

A touch display device includes: a flexible display panel; and a touch panel disposed on the flexible display panel, wherein the flexible display panel comprises: a first substrate; a first conductive a layer having an impedance anisotropy and disposed on the first substrate; a second substrate; a second conductive layer disposed on the second substrate; a receiving unit disposed on the first conductive layer and the Between the second conductive layers, and including a plurality of pixel spaces; and a plurality of charged particles are filled in the pixel spaces, and wherein the touch panel comprises: a third substrate; a third conductive layer, Disposed on the third substrate and having impedance anisotropy, the third substrate includes a plurality of conductive blocks disposed apart from each other; a fourth substrate disposed opposite to the third substrate; and a fourth conductive layer disposed On the fourth substrate, the fourth conductive layer includes a plurality of conductive blocks disposed apart from each other; and an insulating layer disposed between the third conductive layer and the fourth conductive layer. The touch display device of claim 1, wherein the first conductive layer is a carbon nanotube film. The touch display device of claim 1, wherein the first conductive layer comprises a plurality of conductive blocks arranged separately from each other, respectively Positioned above the pixel spaces, each of the conductive blocks has a main conductive direction, and one side of each of the conductive blocks is connected with a plurality of electrodes, the electrodes being substantially perpendicular to the main conductive direction Arrange in the direction. The touch display device of claim 1, wherein the second conductive layer has an impedance anisotropy. The touch display device of claim 4, wherein the second conductive layer is a carbon nanotube film. The touch display device of claim 4, wherein the second conductive layer comprises a plurality of conductive blocks disposed apart from each other, respectively disposed under the pixel spaces, each of the conductive blocks having In a main conductive direction, a plurality of electrodes are connected to one side of each of the conductive blocks, and the electrodes are arranged in a direction substantially perpendicular to the main conductive direction. The touch display device according to claim 1, wherein the first substrate and the second substrate are flexible substrates. The touch display device of claim 1, wherein the charged particles in each pixel space are positively or negatively charged, or a part of the charged particles in each pixel space. Positively charged, and the other part of the charged particles are negatively charged. The touch display device of claim 1, wherein the charged particles comprise at least one of white charged particles, black charged particles, and colored charged particles. The touch display device of claim 1, further comprising a dielectric solvent filled in the pixel spaces. The touch display device of claim 10, wherein the color of the dielectric solvent is colorless, black or white. The touch display device of claim 1, wherein the accommodating unit comprises a partition wall portion disposed between any two adjacent pixel spaces to separate the pixel spaces. . The touch display device of claim 1, further comprising a plurality of color filter units disposed on the first substrate and located above the pixel spaces. The touch display device of claim 1, further comprising a driving unit electrically connected to the first conductive layer and the second conductive layer, wherein the driving unit is adapted to be via the first conductive The layer and the second conductive layer transmit signals to opposite sides of the corresponding pixel space to drive the charged particles in the pixel space for display. The touch display device of claim 1, further comprising a backlight module, wherein the second substrate is disposed between the first substrate and the backlight module. The touch display device of claim 1, wherein the third conductive layer comprises a carbon nanotube film. The touch display device of claim 1, wherein the fourth conductive layer has an impedance anisotropy.