TWI546602B - Touch electrophoretic display device - Google Patents

Description

Touch type electrophoretic display device

The invention relates to an electrophoretic display technology, in particular to a touch type electrophoretic display device.

The electrophoretic display has a bistable characteristic, that is, only when the display image is changed, the power supply is required, and the display image can be displayed without the power supply, and has the advantage of power saving, and thus has been widely used. In electronic paper and other portable electronic equipment.

In addition, in order to improve the convenience of operation, an electrophoretic display is usually combined with a touch panel to form a touch-sensitive electrophoretic display device.

Since the electrophoretic display device is a reflective display device, the displayed image needs to be viewed by the user by means of external light, such as daylight or light. When the external light is insufficient, the display image will be difficult to be seen by the user.

In order to solve the above problem, a front light source is usually disposed on the front side of the display of the electrophoretic display device. The front light source includes a light guide plate and a light emitting unit, and the light emitting unit is disposed at an edge of the light guide plate. The light emitted by the light-emitting unit after being turned on is uniformly dispersed on the display surface of the electrophoretic display device by the guidance of the light guide plate.

However, since the light is along the edge where the lighting unit is located When the light guide plate diffuses to the four sides, attenuation or loss occurs, and the portion of the light guide plate provided with the light-emitting unit has higher brightness than other portions, and the portion is likely to have different brightness from other portions, thereby appearing The brightness of the light guide plate is uneven, or light leakage occurs, which affects the appearance quality of the terminal product.

It is an object of the present invention to provide a touch-sensitive electrophoretic display device to solve the aforementioned technical problems.

The touch-sensitive electrophoretic display device of the present invention comprises: an electrophoretic display; a light guide plate is attached to the electrophoretic display through a first optical adhesive layer, wherein the light guide plate is adjacent to the first optical adhesive layer Forming an accommodating area at an edge of the surface; a light emitting unit disposed in the accommodating area; a light blocking tape disposed on the surface of the light guide plate facing away from the first optical adhesive, and at the light guide plate An orthographic projection is disposed on the accommodating area; a touch unit is disposed on the light guide plate through a second optical adhesive layer, wherein the light blocking tape is located in the touch unit and the light guide plate between.

Preferably, the touch panel comprises a substrate, a shielding layer and an ink layer, the shielding layer is disposed on the substrate, and the ink layer is disposed on the shielding layer, wherein the shielding layer The ink layer is located between the substrate and the second optical adhesive layer, and the shielding layer is located between the ink layer and the substrate.

Preferably, the ink layer covers a part of the surface of the shielding layer, and the second optical adhesive layer partially overlaps the shielding layer and has no overlap with the ink layer.

Preferably, the touch unit further includes a touch electrode layer and a wire layer, wherein the touch electrode layer is disposed on the substrate and partially extends onto the shielding layer, the wire The layer is located on the shielding layer and electrically connected to the touch electrode layer extending to the shielding layer.

Preferably, the touch unit further includes a touch electrode layer and a wire layer, wherein the touch electrode layer is disposed on the substrate and partially extends onto the ink layer, The wire layer is on the ink layer and is electrically connected to the touch electrode layer extending to the ink layer.

Preferably, the accommodating area is formed by recessing the light guide plate near a surface edge of the first optical adhesive layer toward the touch unit.

Preferably, the light emitting unit comprises a flexible circuit board and a plurality of light emitting elements, wherein the light emitting element is disposed on the flexible circuit board, and the light emitting element is located in the receiving area.

Preferably, the light emitting element is a light emitting diode.

Preferably, the material of the first optical adhesive layer is an optical adhesive having a refractive index ranging from 1.41 to 1.42.

Preferably, the material of the second optical adhesive layer is an optical silicone having a refractive index ranging from 1.41 to 1.42.

Preferably, the light blocking tape is a white tape.

Preferably, the orthographic projection of the shielding layer on the substrate completely covers the light blocking tape and the orthographic projection of the light emitting unit on the substrate.

The effect of the invention is that a corresponding gear is arranged at the corresponding lighting unit The optical tape uses a light blocking tape to block part of the light to average the brightness of each part of the light guide plate, thereby improving the appearance quality of the end product.

21‧‧‧electrophoretic display

211‧‧‧ display surface

22‧‧‧Light guide plate

221‧‧‧ lower surface

222‧‧‧ upper surface

223‧‧‧Receiving area

23‧‧‧First optical layer

24‧‧‧Lighting unit

241‧‧‧Soft circuit board

242‧‧‧Lighting elements

25‧‧‧Light blocking tape

26‧‧‧Touch unit

261‧‧‧Substrate

262‧‧‧Shielding layer

263‧‧‧Ink layer

264‧‧‧Touch electrode layer

265‧‧‧ wire layer

27‧‧‧Second optical layer

D ₁ ‧‧‧ display area

V ₁ ‧‧ ‧visible area

V ₂ ‧‧‧non-visible area

Other features and effects of the present invention will be apparent from the following description of the drawings, wherein: FIG. 1 is a front elevational view showing a first preferred embodiment of the touch-sensitive electrophoretic display device of the present invention; 2 is a top view showing the relative position of the light guide plate and the light emitting unit according to the first preferred embodiment of the present invention; FIG. 3 is a front view showing a second preferred embodiment of the touch type electrophoretic display device of the present invention; FIG. 4 is a front elevational view showing a third preferred embodiment of the touch-sensitive electrophoretic display device of the present invention.

Before the present invention is described in detail, it should be noted that in the following description, similar elements are denoted by the same reference numerals. It is to be noted that the "upper" and "lower" representations of the positional relationship appearing in the following description of the text are merely descriptions of the positions made for the corresponding illustrations, and are not intended to limit the invention.

Referring to FIG. 1 , a first preferred embodiment of the touch-sensitive electrophoretic display device of the present invention comprises: an electrophoretic display 21 , a light guide plate 22 , a first optical adhesive layer 23 , a light emitting unit 24 , and a light blocking tape 25 . Touch unit 26, and a second optical adhesive layer 27.

The electrophoretic display 21 having a display surface for displaying an image 211, the display surface 211 includes a display region D _1, D ₁ is the display area of the image display area 21 in the electrophoretic display. Since the detailed structure of the electrophoretic display 21 is known to those skilled in the art, it will not be described in detail.

Referring to FIG. 2 , the light guide plate 22 is adhered to the electrophoretic display 21 through the first optical adhesive layer 23 . The light guide plate 22 is disposed on the display surface 211 of the electrophoretic display 21, and has a lower surface 221 adjacent to the electrophoretic display 21, an upper surface 222 opposite to the lower surface 221, and a lower surface The edge of the surface 221 is recessed toward the upper surface 222 to form a receiving area 223.

The first optical adhesive layer 23 is disposed between the electrophoretic display 21 and the light guide plate 22 for attaching the electrophoretic display 21 and the light guide plate 22, specifically, the first optical adhesive The layer 23 is disposed between the display surface 211 of the electrophoretic display 21 and the lower surface 221 of the light guide plate 22. In this embodiment, the manner of bonding the electrophoretic display 21 and the light guide plate 22 is a full fit. The first optical adhesive layer 23 is completely filled between the display surface 211 of the electrophoretic display 21 and the lower surface 221 of the light guide plate 22 such that there is no gap in the bonding area of the two. It should be noted that, in other embodiments of the present invention, the manner of bonding the electrophoretic display 21 and the light guide plate 22 may be other bonding manners, such as a frame sticker, that is, the first optical adhesive layer 23 . Only disposed on the display surface 211 of the electrophoretic display 21 or the lower surface 221 of the light guide plate 22 The perimeter of the area is filled with air. The material of the first optical adhesive layer 23 is generally an acrylic or bismuth optical adhesive, which may be a liquid glue or a solid glue. The invention is not limited, and preferably, the first optical adhesive layer 23 The material is a lanthanide optical glue, and because of its high temperature resistance and yellowing resistance, the high temperature cracking or yellowing of the first optical adhesive layer 23 due to long-term irradiation of light from the light guide plate 22 can be avoided. problem.

The illuminating unit 24 is disposed in the accommodating area, and has a flexible circuit board 241 and a plurality of illuminating elements 242 disposed on the flexible circuit board 241, wherein the illuminating element 242 is located in the accommodating area. Inside.

In the embodiment of the present invention, the light-emitting element 242 can be a light source commonly used in general displays, and in the preferred embodiment is a light-emitting diode (LED). The light-emitting element 242 is electrically connected to the flexible circuit board 241. The flexible circuit board 241 is electrically connected to an external controller (not shown). The external controller is connected to the flexible circuit board 241. The light-emitting element 242 controls the brightness.

It is to be noted that, in this embodiment, the light emitting unit 24 is fixed in the accommodating area 223 by being bonded to the first optical adhesive layer 23, and in other embodiments of the present invention, The light-emitting unit 24 can also be directly connected to the light guide plate 22, and the connection mode is generally attached to the accommodating area 223 by adding a bonding layer.

The light blocking tape 25 is attached to the upper surface 222 of the light guide plate 22, that is, disposed on the surface of the light guide plate 22 facing away from the first optical adhesive layer 23, and the light blocking tape 25 is in the Front projection on the light guide plate 22 The illuminating element 223 is at least completely covered by the illuminating portion 223, and the illuminating element 242 located in the accommodating area 223 can be covered to ensure that the edge of the light guiding plate 22 where the illuminating element 242 is located is blocked. The light-shielding tape 25 is covered. Thus, the light-blocking tape 25 can block the light emitted from the vertical direction of the light-emitting element 242, reduce the light intensity at the edge of the light-guide plate 22 on which the light-emitting element 242 is disposed, and prevent the light from being It leaks perpendicular to the direction of the upper surface 222 of the light guide plate 22.

In other embodiments of the present invention, the light-blocking tape 25 may be further extended to completely cover the light-emitting unit 24 in a vertical projection direction, thereby blocking more completely from the upper surface perpendicular to the light guide plate 22. Light rays emitted in the direction of 222. Preferably, in order to prevent the discoloration of the light-blocking tape 25 under the illumination of the light-emitting element 242, the light-blocking tape 25 is preferably a white tape.

The touch unit 26 is in contact with the light guide plate 22 through the second optical adhesive layer 27 , wherein the light blocking tape 25 is located between the touch unit 26 and the light guide plate 22 .

In detail, the touch unit 26 includes a substrate 261, a touch electrode layer 264, a wire layer 265, a shielding layer 262, and an ink layer 263. Facing surface 261 of the substrate 21 in the electrophoretic display has a viewable area in the middle part of the non-visible area V ₁₁ and V outside the visible region in addition to a V _2, wherein the visible _{region. 1} and the V The display area D _{1 of the} electrophoretic display 21 corresponds to a specific area. Specifically, the visible area of the visible area V ₁ and the display area D _{1 of} the electrophoretic display 21 on the substrate 261 overlap each other.

The shielding layer 262 is disposed on the substrate 261 between the substrate 261 and the second optical adhesive layer 27 and covers the non-visible area V ₂ for shielding the touch unit from being disposed in the non-visible area. visible region V ₂ other internal electronics (e.g., the conductor layer 265). The shielding layer 262 is a black matrix (BM) commonly known by the general practitioner. The material may be photoresist or ink, generally black or dark, but not limited thereto, and may be white or other colors. In the embodiment, the shielding layer 262 is made of a black photoresist material, and has the advantages of thin thickness, high light density, and flat surface.

The ink layer 263 is located in the non-visible area V ₂ and is disposed on the shielding layer 262 between the shielding layer 262 and the second optical adhesive layer 27 . In this embodiment, the ink layer 263 is directly formed on the lower surface of the shielding layer 262 and completely covers the lower surface of the shielding layer 262. In other embodiments of the present invention, the ink layer 263 The lower surface of the shielding layer 262 may also be partially covered. This embodiment will be described in detail in the embodiment shown in FIG. 4, and will not be described in detail. The ink layer 263 is made of a black or dark insulating ink, and is disposed on the lower surface of the shielding layer 262. On the one hand, the shielding layer 262 can be protected from being damaged in subsequent processes or assembly processes. Scratching or peeling off, on the other hand, the shading degree and color appearance of the shielding layer 262 can be strengthened, especially when the shielding layer 262 is formed of white or light-colored photoresist or ink, due to white or light-colored material shading The degree is not obvious, the color appears to be inconspicuous, and the background of the shielding layer 262 is darkened by setting the ink layer 263 to enhance the degree of color appearance.

The touch electrode layer 264 is disposed on the lower surface of the substrate 261, covers the visible area V _{1 of} the substrate 261, and partially extends onto the ink layer 263. The wire layer 265 is disposed on the ink layer. The lower surface of the 263 is electrically connected to the touch electrode layer 264.

In the embodiment of the present invention, the touch electrode layer 264 is directly formed on the surface of the substrate 261, and is a touch panel structure of a single substrate. The specific structure of the touch electrode layer 264 may be a single layer conductive. The touch pattern structure of the material may also be a touch pattern structure of a double-layer conductive material, which is not limited by the present invention. The substrate 261 is a reinforced transparent cover plate, which may be a reinforced glass plate or a rigid plastic plate, and a surface facing away from the light guide plate 22 for the user to perform a touch operation. The touch electrode layer 264 The transparent conductive material is formed so that a user can view the screen displayed by the electrophoretic display 21 through the touch unit.

The second optical adhesive layer 27 is disposed between the touch unit 26 and the light guide plate 22 for attaching the touch unit 26 and the light guide plate 22 . In this embodiment, the manner in which the touch unit 26 and the light guide plate 22 are attached is a full fit, that is, the second optical adhesive layer 27 is completely filled in the touch unit 26 and the guide. Between the lower surfaces 221 of the light plates 22, there is no gap between the bonding regions of the two. It should be noted that, in other embodiments of the present invention, the manner in which the touch unit 26 and the light guide plate 22 are attached may also be in a manner of being framed, that is, the second optical adhesive layer 27 is only disposed in the The touch unit 26 or the periphery of the light guide plate 22 is described, and the center of the bonding area is filled with air. The second optical glue The material of the layer 27 is generally an acrylic or bismuth optical glue, which may be a liquid glue or a solid glue. The invention is not limited. In the embodiment of the invention, preferably, the second optical layer The material of 27 is a lanthanide optical glue, and because of its high temperature resistance and yellowing resistance, the problem of high temperature cracking or yellowing caused by long-term illumination of the first optical adhesive layer can be avoided.

The constituent elements of the present embodiment and the connection relationship therebetween are separately described. As a whole, the stacking order of the components of the touch-type electrophoretic display device of the present embodiment from bottom to top is the electrophoretic display. The first optical adhesive layer 23, the light emitting unit 24, the light guide plate 22, the light blocking tape 25, the second optical adhesive layer 27, and the touch unit 26, wherein the first An optical adhesive layer 23 and the second optical adhesive layer 27 are respectively disposed between the electrophoretic display 21 and the light guide plate 22 and between the light guide plate 22 and the touch unit 26, and the light blocking The tape 25 and the light-emitting unit 24 are respectively disposed on the upper and lower surfaces 221 and 222 of the light guide plate 22, and are disposed corresponding to the accommodating area 223. The light emitted by the light-emitting unit 24 is transmitted through the light guide plate 22 and dispersed on the entire surface of the light guide plate 22 to form a whole-surface light source corresponding to the display surface 211 of the electrophoretic display 21. It is used to compensate for the light in the case of insufficient external light to avoid the problem that the user cannot see the display screen due to insufficient external light, so that the touch-type electrophoretic display device is weak in the absence of an external light source or an external light source. It can still be used normally.

Since the incident angle of the light entering the light guide plate 22 from the light emitting unit 24 is different, part of the light may be weakened by the refraction during the conduction process, resulting in uneven brightness on the light guide plate 22, in order to avoid the problem. The problem is that the present invention reduces the attenuation of light due to refraction by matching the refractive index. Specifically, the refractive index of the first optical adhesive layer 23 and the second optical adhesive layer 27 adjacent to the light guide plate 22 is adjusted to be lower than the refractive index of the light guide plate 22 to improve The amount of light that is totally reflected at the interface between the light guide plate 22 and the first optical adhesive layer 23 and the second optical adhesive layer 27, thereby reducing the occurrence of light refraction, so that the light is more locked to the guide In the light plate 22, the purpose of making the overall brightness of the light guide plate 22 relatively average is achieved. Preferably, in the embodiment of the present invention, the first optics is preferred, in the embodiment of the present invention, because the viscosity, the transmittance, and the refractive index of the adhesive layer are related to each other. The refractive index of the adhesive layer 23 and the second optical adhesive layer 27 are both between 1.14 and 1.42, which is not only lower than the refractive index of the light guide plate 22, but also the viscosity of the adhesive layer itself meets the requirements of product design.

Because there is an error in the actual process, when the electrophoretic display 21 and the light guide plate 22 and the light guide plate 22 and the touch unit 26 are attached, a corresponding tolerance zone is reserved, and The touch-sensitive electrophoretic display device further includes an assembly casing, so that the outer contour of the touch unit 26 needs to exceed the outer contour of the light guide plate 22, that is, the touch unit 26 is in a vertical projection direction. The light guide plate 22 is completely covered, and the former is larger than the latter. Since the light-emitting unit 24 and the light-blocking tape 25 are correspondingly disposed in the accommodating area 223 of the light guide plate 22, the light guide plate 22 is at least The side of the light-emitting unit 24 is disposed beyond the outer contour of the electrophoretic display 21, and the other sides are at least aligned with the electrophoretic display 21 or partially exceeded, thereby ensuring the light guide plate 22 and the electrophoretic display. 21 or the bonding surface of the touch unit 26 is flat, and the light guide plate 22 can uniformly cover the entire display surface of the electrophoretic display 21. According to the size relationship of the above-mentioned components, it can be known that the light guide plate 22 can completely cover the display area D _{1 of} the electrophoretic display 21, and the light-emitting power source 24 and the The side of the light-shielding tape 25 corresponds to the non-visible area V ₂ of the touch unit 26 . In other words, the light-emitting unit 24 and the light-blocking tape 25 are correspondingly located in the non-visible area of the touch unit 26 . V ₂ , in this way, the light-emitting unit 24 and the light-blocking tape 25 are not visible to the user.

It can be understood that, in the process of the bonding process, the first optical adhesive layer 23 and the second optical adhesive layer 27 need to reserve a certain tolerance zone in part to prevent the gel from being exposed due to the alignment deviation. And other issues. Therefore, the area of the second optical adhesive layer 27 is smaller than the area of the touch unit 26, and is mainly corresponding to the visible area V ₁ of the substrate 261 and partially extends to the substrate 261. Non-visible area V ₂ .

Referring to FIG. 3, FIG. 3 shows a touch-sensitive electrophoretic display device according to a second preferred embodiment of the present invention. The touch-sensitive electrophoretic display device shown in FIG. 3 is different from the touch-sensitive electrophoretic display device shown in FIG. 1 in that the touch electrode layer 264 is different from the position of the wire layer 265, and other components and connections are The relationship is the same.

Specifically, in the embodiment, the touch electrode layer 264 is formed on the visible portion V ₁ and extends to a portion of the surface of the shielding layer 262, and the wire layer 265 is correspondingly formed on the shielding layer. The surface of the layer 262 is electrically connected to the touch electrode layer 264 extending to the shielding layer 262. The ink layer 263 is disposed on the touch electrode layer 264 and the wire layer 265. A portion of the touch electrode layer 264 and the wire layer 265 are disposed between the shielding layer 262 and the ink layer 263. On the one hand, the touch electrode layer 264 and the wire layer 265 are The protection of the ink layer 263, on the other hand, when the touch electrode layer 264 extends onto the shielding layer 262, the height to be spanned is small, and the touch electrode layer can be reduced to some extent. 264 The possibility of breakage of the touch electrode material due to brittleness.

Referring to FIG. 4, FIG. 4 is a touch type electrophoretic display device according to a third preferred embodiment of the present invention. The difference between the touch-type electrophoretic display device of the present embodiment and the touch-sensitive electrophoretic display device of the second preferred embodiment is that the ink layer 263 is disposed differently.

Specifically, the ink layer 263 covers a part of the surface of the shielding layer 262 and does not overlap and is adjacent to the second optical adhesive layer 27. In other words, according to the foregoing description, the second optical adhesive layer 27 partially extends to the non-visible area V _{2 of} the substrate 261, and in the embodiment, the second optical adhesive layer 27 extends to the shielding. The layer 262 covers a portion of the shielding layer 262, and the ink layer 263 only needs to be disposed adjacent to the second optical adhesive layer 27 to cover the shielding layer 262 not covered by the second optical adhesive layer 27. The portion is such that the shielding layer 262 can be completely covered by the optical adhesive layer 27 and the ink layer 263 to be protected. In this embodiment, the ink layer 263 is disposed away from the area where the second optical adhesive layer 27 is disposed, and accordingly, the touch unit 26 and the guide are attached by using the second optical adhesive layer 27. In the case of the light plate 22, it is only necessary to overcome the height difference between the substrate 261 and the shielding layer 262, without considering the thickness of the ink layer 263, and the occurrence of poor bonding due to unevenness of the bonding surface can be reduced.

In the present invention, the light-shielding tape 25 is used to block the light emitted from the light-emitting element 242 perpendicular to the light guide plate 22 to average the brightness of each part of the light guide plate 22, thereby improving the appearance quality of the terminal product.

The above is only the preferred embodiment of the present invention, and the scope of the present invention is not limited thereto, that is, the simple equivalent changes and modifications made by the patent application scope and patent specification content of the present invention, All remain within the scope of the invention patent.

21‧‧‧electrophoretic display

211‧‧‧ display surface

22‧‧‧Light guide plate

221‧‧‧ lower surface

222‧‧‧ upper surface

223‧‧‧Receiving area

23‧‧‧First optical layer

24‧‧‧Lighting unit

241‧‧‧Soft circuit board

242‧‧‧Lighting elements

25‧‧‧Light blocking tape

26‧‧‧Touch unit

261‧‧‧Substrate

262‧‧‧Shielding layer

263‧‧‧Ink layer

264‧‧‧Touch electrode layer

265‧‧‧ wire layer

27‧‧‧Second optical layer

D ₁ ‧‧‧ display area

V ₁ ‧‧ ‧visible area

V ₂ ‧‧‧non-visible area

Claims (12)

A touch-sensitive electrophoretic display device includes: an electrophoretic display; a light guide plate is attached to the electrophoretic display through a first optical adhesive layer, wherein the light guide plate is adjacent to a surface of the first optical adhesive layer Forming an accommodating area at the edge; a light emitting unit disposed in the accommodating area; a light blocking tape disposed on the surface of the light guide plate facing away from the first optical adhesive, and on the light guide plate An orthographic projection covers the accommodating area; a touch unit is attached to the light guide plate through a second optical adhesive layer, wherein the light blocking tape is located between the touch unit and the light guide plate The touch unit has a visible area in the middle portion, and a non-visible area except the visible area, and the light emitting unit and the light blocking tape are correspondingly located in the non-visible area. The touch-sensitive electrophoretic display device of claim 1, wherein the touch panel comprises a substrate, a shielding layer and an ink layer, the shielding layer is disposed on the substrate, and the ink layer is disposed on the substrate On the shielding layer, wherein the shielding layer and the ink layer are located between the substrate and the second optical adhesive layer, and the shielding layer is located between the ink layer and the substrate. The touch-sensitive electrophoretic display device of claim 2, wherein the ink layer covers a part of a surface of the shielding layer, the second optical adhesive layer partially overlaps the shielding layer, and the ink There is no overlap between the layers. The touch-sensitive electrophoretic display device of claim 2 or 3, wherein the touch unit further includes a touch electrode layer and a wire layer, and the touch electrode layer is disposed on the substrate And extending to the shielding layer, wherein the wire layer is located on the shielding layer and electrically connected to the touch electrode layer extending to the shielding layer. The touch-sensitive electrophoretic display device of claim 2 or 3, wherein the touch unit further includes a touch electrode layer and a wire layer, wherein the touch electrode layer is disposed on the substrate, and The portion extends to the ink layer, and the wire layer is located on the ink layer and electrically connected to the touch electrode layer extending to the ink layer. The touch-sensitive electrophoretic display device of claim 1, wherein the accommodating region is formed by recessing the light guide plate toward a surface of the first optical adhesive layer toward the touch unit. The touch-sensitive electrophoretic display device of claim 1, wherein the light-emitting unit comprises a flexible circuit board and a plurality of light-emitting elements, wherein the light-emitting element is disposed on the flexible circuit board, and the light-emitting element Located in the accommodating area. The touch-sensitive electrophoretic display device of claim 7, wherein the light-emitting element is a light-emitting diode. The touch-sensitive electrophoretic display device of claim 1, wherein the material of the first optical adhesive layer is an optical adhesive having a refractive index ranging from 1.41 to 1.42. The touch-sensitive electrophoretic display device of claim 1, wherein the material of the second optical adhesive layer has a refractive index ranging from 1.41 to 1.42. Optical silicone. The touch-sensitive electrophoretic display device of claim 1, wherein the light blocking tape is a white tape. The touch-sensitive electrophoretic display device of claim 2, wherein the orthographic projection of the shielding layer on the substrate completely covers the light-shielding tape and the orthographic projection of the light-emitting unit on the substrate.