TWI499949B - Touch display panel and touch display apparatus - Google Patents

Description

Touch display panel and touch display device

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

With the continuous advancement of technology, various information devices are constantly being introduced, such as mobile phones, tablet computers, ultra-thin notebooks, and satellite navigation. In addition to keyboard or mouse input or manipulation, the use of touch technology to manipulate information devices is a fairly intuitive and popular way to manipulate. Among them, the touch display panel has a user-friendly and intuitive input operation interface, so that users of any age can directly select or manipulate the information device with a finger or a stylus.

Generally, there are two types of touch display devices. One is to provide a sensing electrode layer in a display panel (for example, a liquid crystal display panel) to be an in-cell touch display panel, and the other is A touch panel is further disposed on the display panel to form an on cell touch display panel.

An object of the present invention is to provide a new structure of an external touch display panel and a touch display device.

The invention provides a touch display panel, which comprises a display panel, a touch panel and a circuit connecting board. The display panel has a first substrate and a second substrate, and the first substrate and the second substrate are opposite to each other. The touch panel is disposed on the display panel. The circuit connection board is disposed on the touch panel and is electrically connected to the touch panel. The circuit connection board at least partially overlaps the first substrate on the projection in the vertical direction of the display panel.

The present invention provides a touch display device including a touch display panel and a backlight module. The touch display panel has a display panel, a touch panel and a circuit connecting board. The display panel has a first substrate and a second substrate. The first substrate is opposite to the second substrate. The touch panel is disposed on the display panel. The circuit connection board is disposed on the touch panel and coupled to the touch panel. The electrical connection is at least partially overlapped with the first substrate on the projection in the vertical direction of the display panel. The backlight module is disposed on a side of the display panel away from the touch panel.

In an embodiment, the circuit connection board has a partial overlap with the second substrate on the projection in the vertical direction of the display panel.

In an embodiment, the area of the touch panel is less than or equal to the area of the first substrate in the vertical direction of the display panel.

In an embodiment, the first substrate and the second substrate are disposed to overlap each other.

In an embodiment, the touch panel and the display panel are misaligned.

In an embodiment, the display panel further has a first polarizing plate and a second polarizing plate. The first polarizing plate is disposed on a side of the first substrate away from the second substrate, and the second polarizing plate is disposed on the second substrate and the touch Between the control panels.

In an embodiment, the touch panel protrudes from the second polarizer and has a protruding length of between 0.3 mm and 2 mm.

In an embodiment, the first substrate protrudes from the second polarizing plate and has a maximum protruding length of 5 mm.

In an embodiment, the distance between the touch panel and the second polarizer is less than or equal to 0.1 mm.

In one embodiment, the display panel has a driving circuit board, and the touch panel is electrically connected to the driving circuit board by the circuit connecting board.

In one embodiment, a buffer material is disposed between the display panel and the touch panel, the buffer material has a first width, and the first substrate has a second width, and the first width is greater than the second width.

In one embodiment, the touch display device further includes a plastic frame and a back plate. The plastic frame is disposed adjacent to the backlight module, and the display panel and the touch panel are disposed on the plastic frame. The plastic frame, the backlight module, the display panel and the touch panel are disposed on the backboard.

In one embodiment, the touch display device further includes an adhesive material, and the touch panel, the display panel, and the backlight module are connected to each other by an adhesive. The adhesive material, the backlight module, the display panel and the touch panel are disposed on the backboard.

In an embodiment, the manner in which the plastic frame and the back plate are connected includes snapping or gluing.

In one embodiment, the touch display device further includes a light shielding material disposed on an outer side of the back plate.

In one embodiment, the touch display device further includes a front frame member disposed on a periphery of the touch display panel and having a shielding portion on the touch display panel, the shielding portion having a surface and one of the surfaces The extension line has an angle with the upper surface of the touch display panel, and the angle is between 5 degrees and 30 degrees.

The invention provides a touch display panel, which comprises a display panel, a touch panel and a circuit connecting board. The display panel has a first substrate and a second substrate, and the first substrate and the second substrate are opposite to each other. The touch panel is disposed on the display panel and is disposed offset from the display panel. The circuit connection board is disposed on the touch panel and is electrically connected to the touch panel. At least one side of the touch panel is located between the first substrate and the second substrate on the projection in the vertical direction of the display panel.

As described above, in the touch display panel and the touch display device of the present invention, the touch panel is disposed on the display panel, and the circuit connection board is disposed on the touch panel and is electrically connected to the touch panel. connection. Wherein, in the projection of the vertical direction of the display panel, the circuit connecting board and the first substrate of the display panel at least partially overlap, or at least one side of the touch panel is located on the first substrate and the second in the projection of the vertical direction of the display panel Between the substrates. Therefore, compared with the conventional external touch display panel and the touch display device, the present invention is a new structure of the external touch display panel and the touch display device.

1, 1a, 1b, 1c, 31‧‧‧ touch display panel

11, 11a, 11b, 11c‧‧‧ display panel

111‧‧‧First substrate

112‧‧‧second substrate

113‧‧‧First polarizer

114‧‧‧Second polarizer

115‧‧‧Drive Circuit Board

116‧‧‧ circuit film

12‧‧‧One touch panel

13‧‧‧Circuit connection board

14, 27‧‧‧ cushioning material

2a~2k, 3‧‧‧ touch display device

21‧‧‧Backlight module

211‧‧‧reflector

212‧‧‧Light guide plate

213, 214, 215, F‧‧‧ optical diaphragm

22‧‧‧ plastic frame

221, 231‧‧ ‧ bearing surface

222‧‧‧ card hook

23‧‧‧ Backplane

232‧‧‧With the Ministry

24‧‧‧Adhesive

25‧‧‧ shading material

26‧‧‧ Tape

32‧‧‧Front frame

321‧‧‧Shading Department

A, B‧‧‧ protruding length

C‧‧‧ distance

C1‧‧‧Connecting parts

C2‧‧‧ wire

E‧‧‧first width

F‧‧‧second width

L‧‧‧ Extension line

S1, S2‧‧‧ surface

V‧‧‧visible area

Θ‧‧‧ angle

1 is a cross-sectional view of a touch display panel in accordance with a preferred embodiment of the present invention.

2 and 3 are schematic diagrams of touch display panels according to different embodiments of the present invention.

4A, FIG. 4B and FIG. 4C are respectively schematic diagrams of different aspects of the touch panel, the first substrate and the second substrate of the present invention.

FIG. 5A is an integrated circuit of a driving circuit of a touch panel of the present invention and a driving circuit of the display panel; schematic diagram.

FIG. 5B to FIG. 5D are respectively schematic diagrams showing different aspects of the trace of the touch display panel of the present invention.

FIG. 6A is a perspective view of a touch display panel according to a preferred embodiment of the present invention.

FIG. 6B is a bottom view of another touch display panel according to a preferred embodiment of the present invention.

7A to 7K are respectively schematic cross-sectional views of a touch display device according to a preferred embodiment of the present invention.

FIG. 8 is a schematic diagram of another touch display device according to a preferred embodiment of the present invention.

The touch display panel and the touch display device according to the preferred embodiment of the present invention will be described with reference to the accompanying drawings, wherein the same elements will be described with the same reference numerals. In addition, the illustrations of all the embodiments of the present invention are merely illustrative and do not represent true dimensions and proportions. In addition, all the embodiments of the present invention are an external touch display panel and a touch display device.

Please refer to FIG. 1 , which is a cross-sectional view of a touch display panel 1 according to a preferred embodiment of the present invention.

The touch display panel 1 includes a display panel 11 , a touch panel 12 , and a circuit connecting board 13 .

The display panel 11 has a first substrate 111 and a second substrate 112. The first substrate 111 and the second substrate 112 are opposite to each other. The materials of the first substrate 111, the second substrate 112, and the touch panel 12 may include glass, and the materials of the glass may be the same or different. In addition, the areas of the first substrate 111 and the second substrate 112 may be the same or different. Here, the area of the first substrate 111 and the second substrate 112 are the same, and the two are arranged in an overlapping manner as an example. The first substrate 111 of the present embodiment is a thin film transistor substrate, and the second substrate 112 is a color filter substrate. However, in other embodiments, the black matrix layer on the color filter substrate ( The black matrix and the filter layer may also be respectively disposed on the thin film transistor substrate, so that the first substrate 111 becomes a BOA (BM on array) substrate or becomes a COA (color filter on array) substrate. There are no restrictions on this. In addition, the touch display panel 1 further has a liquid crystal layer (not shown). The liquid crystal layer is sandwiched between the first substrate 111 and the second substrate 112. Therefore, the display panel 11 is a liquid crystal display panel.

The display panel 11 further includes a first polarizing plate 113 and a second polarizing plate 114. The first polarizing plate 113 is disposed on one side of the first substrate 111 away from the second substrate 112, and the second polarizing plate 114 is disposed on the second substrate 112. Between the touch panel 12 and the touch panel 12 . Here, the first polarizing plate 113 is a lower polarizing plate and is located on the lower side surface of the first substrate 111, and the second polarizing plate 114 is an upper polarizing plate and is located on the upper surface of the second substrate 112. In this embodiment, the area of the first polarizing plate 113 is smaller than the area of the first substrate 111, and the area of the second polarizing plate 114 is also smaller than the area of the second substrate 112. However, in other implementations, the area of the first polarizing plate 113 may also be equal to the area of the first substrate 111, and the area of the second polarizing plate 114 may also be equal to the area of the second substrate 112.

The touch panel 12 is disposed on the display panel 11 . The touch panel 12 is opposite to the display panel 11 and can be disposed on the display panel 11 by gluing or other connection mechanism. The touch panel 12 can be connected to the second polarizing plate 114, and the touch panel 12 and the display panel 11 can be combined by direct bonding, for example, by an adhesive material (not shown). Of course, the touch panel 12 and the second polarizing plate 114 may not be in contact with each other, and the touch panel 12 and the display panel 11 may be combined, for example, by air bonding. In the case of the air bonding, a ring of adhesive material (or a dispensing method) may be disposed on the four sides of the upper surface of the second substrate 112 to adhere the touch panel 12 to the display panel 11 . Above. In addition, the second polarizing plate 114 of the present embodiment has a smaller size than the second substrate 112 and is disposed between the second substrate 112 and the touch panel 12 and surrounded by the adhesive material, so that the second polarizing plate 114 and the second polarizing plate 114 are A gap is formed between the touch panels 12. In addition, in the vertical direction of the display panel 11, the area of the touch panel 12 may be smaller than, equal to, or larger than the area of the first substrate 111, and the present invention is not particularly limited.

The circuit board 13 is disposed on the touch panel 12 and is electrically connected to the touch panel 12 . Here, the circuit connecting plate 13 is electrically connected to the lower surface of the touch panel 12, and the circuit connecting plate 13 and the first substrate 111 at least partially overlap the projection of the display panel 11 in the vertical direction. In other words, a portion of the circuit connection board 13 is located above the first substrate 111 as viewed from above the touch panel 12 . The circuit board 13 is electrically connected to the driving circuit of the driving touch panel 12 to control the operation of the touch panel 12 by the circuit connecting board 13. The circuit connection board 13 is, for example but not limited to, a flexible printed circuit (FPC) board or a soft and hard board.

In addition, on the projection of the display panel 11 in the vertical direction, the circuit connection board 13 and the second substrate 112 may also have partial overlap or no overlap. In this embodiment, the circuit connection board 13 and the second substrate 112 have a partial overlap as an example. In other words, since the first substrate 111 and the second substrate 112 have the same area and are disposed in an overlapping manner, the circuit board 13 and the first substrate 111 and the first substrate 111 are projected on the vertical direction of the display panel 11 . The two substrates 112 each have a partial overlap. Further, in the projection of the display panel 11 in the vertical direction, the circuit connecting plate 13 and the second polarizing plate 114 do not overlap at all. Therefore, the gap between the touch panel 12 and the second substrate 112 can be made small, and the overall thickness of the touch display panel 1 can be made thin.

In addition, the right side of the touch panel 12 of FIG. 1 protrudes from the second polarizing plate 114 (but does not protrude from the outer side of the second substrate 112), and the protruding length A thereof may be, for example, between 0.3 mm and 2 mm. The right side of the first substrate 111 protrudes from the second polarizing plate 114, and the maximum length of the protruding length B is 5 mm. (When the protruding length B = 0 mm, it means that the size of the second polarizing plate 114 is the same as that of the first substrate 111, and is disposed in alignment with the first substrate 111). In addition, the distance C between the touch panel 12 and the second polarizing plate 114 is less than or equal to 0.1 mm.

Referring to FIG. 2 and FIG. 3 respectively, FIG. 2 is a schematic diagram of touch display panels 1a and 1b according to different embodiments of the preferred embodiment of the present invention.

As shown in FIG. 2 , the touch display panel 1 a is substantially the same as the touch display panel 1 of FIG. 1 , and the main difference is that the size of the second substrate 112 of FIG. 2 is smaller than the size of the first substrate 111 . The (area) is such that the left and right sides of the first substrate 111 of FIG. 2 protrude from the left and right sides of the second substrate 112, respectively.

As shown in FIG. 3 , the touch display panel 1 b is substantially the same as the touch display panel 1 , and the main difference is that the touch panel 12 of FIG. 3 and the first substrate 111 of the display panel 11 b are dislocated and displayed. In the projection of the panel 11 in the vertical direction, the circuit connecting plate 13 has only partial overlap with the first substrate 111, but does not overlap with the second substrate 112.

Referring to FIG. 4A, FIG. 4B and FIG. 4C respectively, the touch panel 12, the first substrate 111 and the second substrate 112 of the present invention are respectively different schematic views. Herein, the area of the touch panel 12 is less than or equal to the first substrate 111. However, in other embodiments, the area of the touch panel 12 may be larger than the area of the first substrate 111, and the invention is not particularly limited. Additionally, Figures 4A, 4B, and 4C are merely examples and are not intended to limit the invention.

As shown in FIG. 4A, the touch panel 12 is disposed on the display panel (including the first base) Above the board 111 and the second substrate 112), and disposed offset from the display panel. The touch panel 12 does not overlap with the projection of the four sides of the first substrate 111 in the direction perpendicular to the first substrate 111. In addition, the size of the second substrate 112 is smaller than that of the first substrate 111, and two sides of the projection of the second substrate 112 in the direction perpendicular to the first substrate 111 overlap the first substrate 111. The circuit connection board 13 of the present embodiment is located at the left and upper sides of the touch panel 12 of FIG. 4A. However, the circuit connection board 13 can also be located at the right and lower sides of the touch panel 12 of FIG. 4A. Specially limited. In addition, at least one side of the touch panel 12 is located between the first substrate 111 and the second substrate 112 on the projection in the vertical direction of the display panel. Here, the two sides (the right side and the lower side of the touch panel 12) are located between the corresponding first substrate 111 and the side of the second substrate 112.

As shown in FIG. 4B, the touch panel 12 is disposed on the display panel (including the first substrate 111 and the second substrate 112) and disposed offset from the display panel. The touch panel 12 does not overlap with the projection of the four sides of the first substrate 111 in the direction perpendicular to the first substrate 111. In addition, the size of the second substrate 112 is smaller than that of the first substrate 111, and the two substrates (left side and upper side) of the second substrate 112 on the projection in the direction perpendicular to the first substrate 111 overlap the first substrate 111.

As shown in FIG. 4C, the two sides of the touch panel 12 and the first substrate 111 in the direction perpendicular to the first substrate 111 are overlapped (left side and upper side). In addition, the second substrate 112 is smaller in size than the first substrate 111, and the second substrate 112 has two sides on the projection in the direction perpendicular to the first substrate 111, and overlaps the first substrate 111 and the touch panel 12 (left side and upper side). . In addition, at least one side of the touch panel 12 is located between the first substrate 111 and the second substrate 112 on the projection in the vertical direction of the display panel. Here, the two sides (the right side and the lower side of the touch panel 12) are located between the corresponding first substrate 111 and the side of the second substrate 112.

Please refer to FIG. 5A , which is a schematic diagram of the driving circuit of the touch panel 12 of the present invention and the driving circuit of the display panel 11 .

The display panel 11 is electrically connected to the driving circuit board 115 through the circuit film 116 of the Chip On Film (COF) technology, and the touch panel 12 is connected to the driving circuit board by the circuit connecting board 13 and the connecting member C1 and the driving circuit board. 115 is electrically connected to integrate the display control circuit of the display panel 11 and the touch panel 12 on the same driving circuit board 115.

In addition, please refer to FIG. 5B to FIG. 5D respectively, which are respectively schematic diagrams of different aspects of the trace of the touch display panel 1 of the present invention. Here, the touch display panel 1 is taken as an example, but the same applies to the touch display panel 1a or 1b.

The touch display panel 1 has a viewable area V. The visible area V refers to an area in which the outer casing can actually be displayed to display an image, and the light can be emitted from the visible area V to the viewer. The driving control circuit of the display panel 11 of the touch display panel 1 and the touch panel 12 (not shown) is integrated on the same driving circuit board 115.

As shown in FIG. 5B, the driving circuit board 115 is electrically connected to the touch display panel 1 by a connecting member C1, a circuit connecting board 13 and a plurality of wires C2. In addition, as shown in FIG. 5C, the driving circuit board 115 is electrically connected to the touch display panel 1 by two connecting members C1, two circuit connecting plates 13 and a plurality of wires C2. In addition, as shown in FIG. 5D, the driving circuit board 115 is electrically connected to the touch display panel 1 by two connecting members C1, a circuit connecting board 13 and a plurality of wires C2.

Please refer to FIG. 6A , which is a perspective view of a touch display panel according to a preferred embodiment of the present invention. The first polarizing plate 113 is not shown in FIG. 6A.

The touch panel 12 and the display panel 11 are arranged to overlap each other. The first substrate 111 is disposed at the bottom, and the second substrate 112 is disposed above the first substrate 111, and the area of the second substrate 112 is smaller than the area of the first substrate 111. In addition, the area of the touch panel 12 is smaller than the area of the first substrate 111 but equal to the area of the second substrate 112. In addition, disposed between the touch panel 12 and the second substrate 112 is a second polarizing plate 114 having an area smaller than the touch panel 12 and the second substrate 112. In addition, the circuit board 13 is connected to the touch panel 12 , and the circuit board 13 partially overlaps the first substrate 111 and the second substrate 112 on the projection in the direction perpendicular to the first substrate 111 .

In addition, please refer to FIG. 6B , which is a bottom view of another touch display panel 1 c according to a preferred embodiment of the present invention.

The area of the touch panel 12 of the touch display panel 1c is larger than the area of the first substrate 111 of the display panel 11c, and the area of the second substrate (not shown) is smaller than the area of the first substrate 111. In addition, a buffer material 14 is disposed between the display panel 11c and the touch panel 12, the buffer material 14 has a first width E, and the first substrate 111 corresponding to the buffer material 14 has a second width F, and the first width E The system is larger than the second width F.

Please refer to FIG. 7A to FIG. 7K respectively, which are schematic cross-sectional perspective views of a touch display device according to a preferred embodiment of the present invention. Here, FIG. 7A to FIG. 7K disclose various specific embodiments of the present invention, and the structures of the aspects are the same as those of the foregoing embodiments. A main feature is that the circuit board 13 is directly connected to the touch panel 12 and electrically connected to each other, and can pass through, for example, a hole of the adhesive material or a hole in the plastic frame and a circuit board for driving the touch panel 12 . Electrical connection. The circuit connection board 13 is disposed above the first substrate 111, that is, the projection of the circuit connection board 13 in the direction of the display panel 11 partially overlaps the display panel 11. However, the circuit connection board 13 is not shown in FIGS. 7A to 7K. In addition, the area of the touch panel 12 may be smaller than, equal to, or larger than the area of the display panel 11, and is not particularly limited.

As shown in FIG. 7A, the touch display device 2a includes a touch display panel and a backlight module 21. The touch display panel has the technical features of the above-mentioned touch display panel 1, 1a or 1b, and the touch display panel 1, 1a or 1b has been described in detail above and will not be described again.

The backlight module 21 is disposed on a side of the display panel 11 away from the touch panel 12 . Here, the backlight module 21 is disposed opposite to the display panel 11, and emits light to the display panel 11, so that the display panel 11 can display an image. In this embodiment, the backlight module 21 includes a reflective plate 211, a light guide plate 212, and a plurality of optical films 213, 214, and 215. The optical films 213, 214, and 215 are respectively, for example but not limited to, light collecting sheets or diffusing sheets. Herein, the backlight module 21 is a well-known technology, and those skilled in the art can understand the relative arrangement relationship and its function, and the present invention will not be described again.

The touch display device 2a further includes a plastic frame 22 and a back plate 23. The plastic frame 22 is used to carry the display panel 11 such that the display panel 11 can be opposite to the backlight module 21 . In this case, the plastic frame 22 is disposed adjacent to the backlight module 21, and the display panel 11 and the touch panel 12 are disposed on the plastic frame 22 to carry the first substrate 111 by the bearing surface 221 of the plastic frame 22. Two substrates 112 and a touch panel 12 . In addition, the backboard 23 is configured to accommodate components such as the display panel 11, the touch panel 12, the backlight module 21, and the plastic frame 22, and provides protection such as collision, electromagnetic waves, or electric shock. Here, the material of the back plate 23 may be plastic, metal or alloy.

In this embodiment, the size of the touch panel 12, the dimensions of the first substrate 111 and the second substrate 112 are the same, and are aligned. In addition, the touch panel 12 and the display panel 11 are coupled by a lip-type connection. Here, an adhesive material 24 is disposed on the periphery of the upper surface of the second substrate 112 to bond the touch panel 12 . The adhesive material 24 can be dispensed or coated with a full edge coating. If the dispensing method is used, the cost can be reduced, and if it is disposed by the entire side coating, the connecting effect is better. In addition, the size of the second polarizing plate 114 is smaller than the size of the second substrate 112 and is surrounded by the adhesive 24 , so that the second polarizing plate 114 and the touch panel 12 are A gap is formed between them. In other embodiments, an optical film (not shown) may be disposed in the gap to improve the light extraction efficiency of the touch display device 2a.

In addition, the touch display device 2a may further include a light shielding material 25, such as but not limited to a light shielding tape, disposed on the outer side of the back plate 23 and located on the periphery of the upper surface of the touch panel 12 for blocking Diffuse light and has a fixed effect. Here, the light shielding material 25 is attached to the back sheet 23 in a manner of being adhered, and covers the side surface and a part of the lower surface of the touch panel 12, the plastic frame 22, and the back sheet 23.

In addition, as shown in FIG. 7B, the touch display device 2b is substantially the same as the touch display device 2a of FIG. 7A. The main difference is that the touch panel 12 and the display panel 11 of the touch display device 2b are misaligned. It protrudes from the display panel 11. In addition, the plastic frame 22 is also shaped differently according to the misalignment of the touch panel 12 to limit the horizontal movement between the touch panel 12 and the display panel 11 respectively. In addition, the plastic frame 22 and the touch panel 12 can also be adhered through the other adhesive material 24 and the bearing surface 221 of the plastic frame 22 to fix the touch panel 12 .

As shown in FIG. 7C, the touch display device 2c is substantially the same as the touch display device 2b of FIG. 7B. The main difference is that the touch display device 2c does not have the light shielding material 25 of FIG. 7B. In addition, the shape of the plastic frame 22 of the touch display device 2c is slightly different from that of FIG. 7B.

As shown in FIG. 7D, the touch display device 2d is substantially the same as the touch display device 2b of FIG. 7B. The main difference is that the touch display device 2d of FIG. 7D does not have the light shielding material 25 of FIG. 7B.

As shown in FIG. 7E, the touch display device 2e is substantially the same as the touch display device 2d of FIG. 7D. The main difference is that the touch display device 2e further includes an optical film F, and the optical film F is disposed on The second substrate 112 and the touch panel 12 are connected to the second polarizing plate 114 to reflect the light reflected by the touch panel 12 back to the touch panel 12, thereby improving light extraction efficiency. Among them, the optical film F is made of a material having high reflectivity.

As shown in FIG. 7F, the touch display device 2f is substantially the same as the touch display device 2c of FIG. 7C. The main difference is that the touch panel 12 and the display panel 11 are connected by direct bonding. In addition, the surface area of the second substrate 112 is smaller than the area of the first substrate 111. In addition, the plastic frame 22 of FIG. 7F has a hook 222, and the hook 222 and the engaging portion 232 of the back plate 23 are coupled and combined in a snap-fit manner.

As shown in FIG. 7G, the touch display device 2g and the touch display device of FIG. 7F 2f is substantially the same, the main difference is that the plastic frame 22 of FIG. 7G has no hook design, but the back plate 23 and the touch panel 12 are combined and fixed by a tape 26 and adhesively attached.

In addition, FIG. 7H to FIG. 7K are compared with FIG. 7A to FIG. 7G, and FIG. 7H to FIG. 7K adopt a frameless design, and the display panel 11 and the touch panel are glued, carried or connected by the adhesive material 24. 12.

As shown in FIG. 7H, in the present embodiment, the touch panel 12 and the display panel 11 of the touch display device 2h are connected by a lip-type connection to connect the touch panel 12 and the display panel 11 by the adhesive material 24. . In addition, the size of the touch panel 12 is substantially the same as the size of the second substrate 112 and the first substrate 111, and is disposed in alignment with the display panel 11. In addition, the display panel 11 and the light guide plate 212 of the backlight module 21 are also glued, carried and connected by another adhesive material 24. In addition, a buffer material 27 is further disposed on the inner side of the backplane 23 and the backlight module 21, the display panel 11, and the touch panel 12, so as to absorb the assembled backlight module 21, the display panel 11, and the touch panel 12 on the backplane. 23 o'clock tolerance and has the function of vibration absorption. In this embodiment, the touch panel 12, the display panel 11 and the backlight module 21 are respectively connected and fixed by the adhesive material 24 at their relative positions.

As shown in FIG. 7I, the touch display device 2i is substantially the same as the touch display device 2h of FIG. 7H, and the main difference is that the touch display device 2i does not have the light shielding material 25 of FIG. 7H.

As shown in FIG. 7J, the touch display device 2j is substantially the same as the touch display device 2i of FIG. 2I. The main difference is that the touch panel 12 of the touch display device 2j is misaligned with the display panel 11 and the back panel is disposed. The shape of the touch panel 12 is also different according to the misalignment of the touch panel 12, so that the back panel 23 can directly carry the touch panel 12 by a bearing surface 231.

As shown in FIG. 7K, the touch display device 2k is substantially the same as the touch display device 2j of FIG. 7j. The main difference is that the size of the touch panel 12 of FIG. 7K is substantially the same as the size of the first substrate 111 and aligned. It is provided, but the size of the second substrate 112 is smaller than the size of the first substrate 111. In addition, the touch panel 12 and the first substrate 111 are connected and fixed by an adhesive material 24 . In addition, the shape of the back plate 23 is different according to the size of the first substrate 111 and the touch panel 12 , so that the back plate 23 carries the first substrate 111 through a bearing surface 231 and another adhesive material 24 .

Please refer to FIG. 8 , which is a schematic diagram of a touch display device 3 according to a preferred embodiment of the present invention. The touch display device 3 can be one of the touch display devices 2a to 2k, and in FIG. 8, only the touch display panel 31 is displayed, and the touch display is not displayed. The components in the panel 31 (ie, no display panel, touch panel, circuit connection board, plastic frame, backplane, etc.) are not shown, and the backlight module is not shown.

In addition to the touch display panel 31, the touch display device 3 further includes a front frame The front frame member 32 is disposed on the outer periphery of the touch display panel 31. The front frame member 32 has a shielding portion 321 , and the shielding portion 321 is located on the touch display panel 31 , and the shielding portion touches the outer peripheral edge of the display panel 31 . The shielding portion 321 has a surface S1, and an extension line L of the surface S1 and the upper surface S2 of the touch display panel 31 have an angle θ, and the angle θ can be between 5 degrees and 30 degrees.

In summary, in the touch display panel and the touch display device of the present invention, The touch panel is disposed on the display panel, and the circuit connection board is disposed on the touch panel and electrically connected to the touch panel. Wherein, in the projection of the vertical direction of the display panel, the circuit connecting board and the first substrate of the display panel at least partially overlap, or at least one side of the touch panel is located on the first substrate and the second in the projection of the vertical direction of the display panel Between the substrates. Therefore, compared with the conventional external touch display panel and the touch display device, the present invention is a new structure of the external touch display panel and the touch display device.

The above is intended to be illustrative only and not limiting. Any departure from this issue The spirit and scope of the Ming Dynasty, and equivalent modifications or changes to it, shall be included in the scope of the patent application attached.

1‧‧‧Touch display panel

11‧‧‧ display panel

111‧‧‧First substrate

112‧‧‧second substrate

113‧‧‧First polarizer

114‧‧‧Second polarizer

12‧‧‧One touch panel

13‧‧‧Circuit connection board

A, B‧‧‧ protruding length

C‧‧‧ distance

Claims (23)

A touch display panel includes: a display panel having a first substrate and a second substrate, wherein the first substrate is opposite to the second substrate; a touch panel is disposed on the display panel, and the display panel is disposed on the display panel The touch panel and the display panel are disposed in a wrong position; and a circuit connecting board is disposed on the touch panel and electrically connected to the touch panel, wherein the vertical direction of the display panel is projected The circuit connecting board at least partially overlaps the first substrate, and at least one side of the touch panel is located between the first substrate and the second substrate. The touch display panel of claim 1, wherein the circuit connection board partially overlaps the second substrate in a projection in a vertical direction of the display panel. The touch display panel of claim 1, wherein the area of the touch panel is less than or equal to the area of the first substrate in a vertical direction of the display panel. The touch display panel of claim 1, wherein the first substrate and the second substrate are disposed to overlap each other. The touch display panel of claim 1, wherein the display panel further has a first polarizing plate and a second polarizing plate, wherein the first polarizing plate is disposed on the first substrate away from the second substrate. The second polarizing plate is disposed between the second substrate and the touch panel. The touch display panel of claim 5, wherein the touch panel protrudes from the second polarizing plate and has a protruding length of between 0.3 mm and 2 mm. The touch display panel of claim 5, wherein the first substrate protrudes from the second polarizing plate and has a maximum protruding length of 5 mm. The touch display panel of claim 5, wherein the touch panel and the second The distance between the polarizing plates is less than or equal to 0.1 mm. The touch display panel of claim 1, wherein the display panel has a driving circuit board, and the touch panel is electrically connected to the driving circuit board by the circuit connecting board. The touch display panel of claim 1, wherein the display panel and the touch panel have a buffer material, the buffer material has a first width, and the first substrate has a second width. The first width is greater than the second width. A touch display device includes: a touch display panel having a display panel, a touch panel, and a circuit connecting board, the display panel having a first substrate and a second substrate, the first substrate and the first The two substrates are oppositely disposed, and the touch panel is disposed on the display panel. The circuit connection board is disposed on the touch panel and electrically connected to the touch panel, and is vertically projected on the display panel. The circuit board has at least partially overlapped with the first substrate, wherein the display panel and the touch panel have a buffer material, the buffer material has a first width, and the first substrate has a second width. The first width is greater than the second width; and a backlight module is disposed on a side of the display panel away from the touch panel. The touch display device of claim 11, wherein the circuit connection board partially overlaps the second substrate in a projection in a vertical direction of the display panel. The touch display device of claim 11, wherein the area of the touch panel is less than or equal to the area of the first substrate in a vertical direction of the display panel. The touch display device of claim 11, wherein the first substrate and the second substrate are disposed to overlap each other. The touch display device of claim 11, wherein the touch panel and the display panel are misaligned. The touch display device of claim 11, wherein the display panel has a driving circuit board, and the touch panel is electrically connected to the driving circuit board by the circuit connecting board. The touch display device of claim 11, further comprising: a plastic frame disposed adjacent to the backlight module, the display panel and the touch panel being disposed on the plastic frame; and a back plate The plastic frame, the backlight module, the display panel, and the touch panel are disposed on the backplane. The touch display device of claim 11, further comprising: an adhesive material, the touch panel, the display panel and the backlight module are connected to each other by the adhesive material; and a back sheet The adhesive material, the backlight module, the display panel, and the touch panel are disposed on the back panel. The touch display device of claim 17, wherein the manner in which the plastic frame is connected to the back plate comprises snapping or gluing. The touch display device of claim 17 or 18, further comprising: a light shielding material disposed on an outer side of the back plate. The touch display device of claim 17 or claim 18, further comprising: a front frame member disposed on a periphery of the touch display panel and having a shielding portion located on the touch display panel The shielding portion has a surface, and an extension line of the surface has an angle with the upper surface of the touch display panel, and the angle is between 5 degrees and 30 degrees. A touch display panel includes: a display panel having a first substrate and a second substrate, the first substrate being disposed opposite to the second substrate; a touch panel disposed on the display panel and disposed offset from the display panel; and a circuit connection board disposed on the touch panel and electrically connected to the touch panel, wherein At least one side of the touch panel is located between the first substrate and the second substrate. The touch display panel of claim 22, wherein the circuit connection board at least partially overlaps the first substrate in a projection in a vertical direction of the display panel.